diff options
Diffstat (limited to 'drivers/tty/serial')
134 files changed, 921 insertions, 1174 deletions
diff --git a/drivers/tty/serial/21285.c b/drivers/tty/serial/21285.c index 804632b..32b3acf 100644 --- a/drivers/tty/serial/21285.c +++ b/drivers/tty/serial/21285.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for the serial port on the 21285 StrongArm-110 core logic chip. * diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h index b2bdc35..ebfb0bd 100644 --- a/drivers/tty/serial/8250/8250.h +++ b/drivers/tty/serial/8250/8250.h @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for 8250/16550-type serial ports * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * * Copyright (C) 2001 Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/serial_8250.h> diff --git a/drivers/tty/serial/8250/8250_accent.c b/drivers/tty/serial/8250/8250_accent.c index 522aeae..1691f1a 100644 --- a/drivers/tty/serial/8250/8250_accent.c +++ b/drivers/tty/serial/8250/8250_accent.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2005 Russell King. * Data taken from include/asm-i386/serial.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/tty/serial/8250/8250_acorn.c b/drivers/tty/serial/8250/8250_acorn.c index 402dfdd..758c4aa 100644 --- a/drivers/tty/serial/8250/8250_acorn.c +++ b/drivers/tty/serial/8250/8250_acorn.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * linux/drivers/serial/acorn.c * * Copyright (C) 1996-2003 Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/types.h> diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c index 33a8013..74a408d 100644 --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Serial Port driver for Aspeed VUART device * * Copyright (C) 2016 Jeremy Kerr <jk@ozlabs.org>, IBM Corp. * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/device.h> #include <linux/module.h> diff --git a/drivers/tty/serial/8250/8250_bcm2835aux.c b/drivers/tty/serial/8250/8250_bcm2835aux.c index a23c7da..bd53661 100644 --- a/drivers/tty/serial/8250/8250_bcm2835aux.c +++ b/drivers/tty/serial/8250/8250_bcm2835aux.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Serial port driver for BCM2835AUX UART * @@ -5,11 +6,6 @@ * * Based on 8250_lpc18xx.c: * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/clk.h> diff --git a/drivers/tty/serial/8250/8250_boca.c b/drivers/tty/serial/8250/8250_boca.c index a63b599..a9b97c0 100644 --- a/drivers/tty/serial/8250/8250_boca.c +++ b/drivers/tty/serial/8250/8250_boca.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2005 Russell King. * Data taken from include/asm-i386/serial.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index d29b512a..d64afdd 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Universal/legacy driver for 8250/16550-type serial ports * @@ -11,11 +12,6 @@ * userspace-configurable "phantom" ports * "serial8250" platform devices * serial8250_register_8250_port() ports - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/module.h> @@ -262,17 +258,17 @@ static void serial_unlink_irq_chain(struct uart_8250_port *up) * barely passable results for a 16550A. (Although at the expense * of much CPU overhead). */ -static void serial8250_timeout(unsigned long data) +static void serial8250_timeout(struct timer_list *t) { - struct uart_8250_port *up = (struct uart_8250_port *)data; + struct uart_8250_port *up = from_timer(up, t, timer); up->port.handle_irq(&up->port); mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port)); } -static void serial8250_backup_timeout(unsigned long data) +static void serial8250_backup_timeout(struct timer_list *t) { - struct uart_8250_port *up = (struct uart_8250_port *)data; + struct uart_8250_port *up = from_timer(up, t, timer); unsigned int iir, ier = 0, lsr; unsigned long flags; @@ -329,8 +325,7 @@ static int univ8250_setup_irq(struct uart_8250_port *up) if (up->bugs & UART_BUG_THRE) { pr_debug("ttyS%d - using backup timer\n", serial_index(port)); - up->timer.function = serial8250_backup_timeout; - up->timer.data = (unsigned long)up; + up->timer.function = (TIMER_FUNC_TYPE)serial8250_backup_timeout; mod_timer(&up->timer, jiffies + uart_poll_timeout(port) + HZ / 5); } @@ -341,7 +336,6 @@ static int univ8250_setup_irq(struct uart_8250_port *up) * driver used to do this with IRQ0. */ if (!port->irq) { - up->timer.data = (unsigned long)up; mod_timer(&up->timer, jiffies + uart_poll_timeout(port)); } else retval = serial_link_irq_chain(up); @@ -354,7 +348,7 @@ static void univ8250_release_irq(struct uart_8250_port *up) struct uart_port *port = &up->port; del_timer_sync(&up->timer); - up->timer.function = serial8250_timeout; + up->timer.function = (TIMER_FUNC_TYPE)serial8250_timeout; if (port->irq) serial_unlink_irq_chain(up); } @@ -525,8 +519,7 @@ static void __init serial8250_isa_init_ports(void) base_ops = port->ops; port->ops = &univ8250_port_ops; - init_timer(&up->timer); - up->timer.function = serial8250_timeout; + timer_setup(&up->timer, serial8250_timeout, 0); up->ops = &univ8250_driver_ops; diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 26f1745..bfa1a85 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * 8250_dma.c - DMA Engine API support for 8250.c * * Copyright (C) 2013 Intel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/tty.h> #include <linux/tty_flip.h> diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 7e63899..5bb0c42 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Synopsys DesignWare 8250 driver. * * Copyright 2011 Picochip, Jamie Iles. * Copyright 2013 Intel Corporation * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * * The Synopsys DesignWare 8250 has an extra feature whereby it detects if the * LCR is written whilst busy. If it is, then a busy detect interrupt is * raised, the LCR needs to be rewritten and the uart status register read. @@ -256,25 +252,31 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, struct ktermios *old) { unsigned int baud = tty_termios_baud_rate(termios); + unsigned int target_rate, min_rate, max_rate; struct dw8250_data *d = p->private_data; long rate; - int ret; + int i, ret; if (IS_ERR(d->clk) || !old) goto out; - clk_disable_unprepare(d->clk); - rate = clk_round_rate(d->clk, baud * 16); - if (rate < 0) - ret = rate; - else if (rate == 0) - ret = -ENOENT; - else - ret = clk_set_rate(d->clk, rate); - clk_prepare_enable(d->clk); + /* Find a clk rate within +/-1.6% of an integer multiple of baudx16 */ + target_rate = baud * 16; + min_rate = target_rate - (target_rate >> 6); + max_rate = target_rate + (target_rate >> 6); - if (!ret) - p->uartclk = rate; + for (i = 1; i <= UART_DIV_MAX; i++) { + rate = clk_round_rate(d->clk, i * target_rate); + if (rate >= i * min_rate && rate <= i * max_rate) + break; + } + if (i <= UART_DIV_MAX) { + clk_disable_unprepare(d->clk); + ret = clk_set_rate(d->clk, rate); + clk_prepare_enable(d->clk); + if (!ret) + p->uartclk = rate; + } out: p->status &= ~UPSTAT_AUTOCTS; diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c index af72ec3..362c25f 100644 --- a/drivers/tty/serial/8250/8250_early.c +++ b/drivers/tty/serial/8250/8250_early.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Early serial console for 8250/16550 devices * * (c) Copyright 2004 Hewlett-Packard Development Company, L.P. * Bjorn Helgaas <bjorn.helgaas@hp.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Based on the 8250.c serial driver, Copyright (C) 2001 Russell King, * and on early_printk.c by Andi Kleen. * diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c index 0b63812..f6a86f2 100644 --- a/drivers/tty/serial/8250/8250_em.c +++ b/drivers/tty/serial/8250/8250_em.c @@ -1,20 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Renesas Emma Mobile 8250 driver * * Copyright (C) 2012 Magnus Damm - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/device.h> diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index c556247..a402878 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Probe module for 8250/16550-type Exar chips PCI serial ports. * * Based on drivers/tty/serial/8250/8250_pci.c, * * Copyright (C) 2017 Sudip Mukherjee, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License. */ #include <linux/acpi.h> #include <linux/dmi.h> diff --git a/drivers/tty/serial/8250/8250_exar_st16c554.c b/drivers/tty/serial/8250/8250_exar_st16c554.c index 3a7cb82..933811e 100644 --- a/drivers/tty/serial/8250/8250_exar_st16c554.c +++ b/drivers/tty/serial/8250/8250_exar_st16c554.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Written by Paul B Schroeder < pschroeder "at" uplogix "dot" com > * Based on 8250_boca. * * Copyright (C) 2005 Russell King. * Data taken from include/asm-i386/serial.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c index e500f7d..79a4958 100644 --- a/drivers/tty/serial/8250/8250_fintek.c +++ b/drivers/tty/serial/8250/8250_fintek.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Probe for F81216A LPC to 4 UART * * Copyright (C) 2014-2016 Ricardo Ribalda, Qtechnology A/S - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License. */ #include <linux/module.h> #include <linux/pci.h> @@ -40,6 +36,16 @@ #define IRQ_LEVEL_LOW 0 #define IRQ_EDGE_HIGH BIT(5) +/* + * F81216H clock source register, the value and mask is the same with F81866, + * but it's on F0h. + * + * Clock speeds for UART (register F0h) + * 00: 1.8432MHz. + * 01: 18.432MHz. + * 10: 24MHz. + * 11: 14.769MHz. + */ #define RS485 0xF0 #define RTS_INVERT BIT(5) #define RS485_URA BIT(4) @@ -118,6 +124,9 @@ static int fintek_8250_enter_key(u16 base_port, u8 key) if (!request_muxed_region(base_port, 2, "8250_fintek")) return -EBUSY; + /* Force to deactive all SuperIO in this base_port */ + outb(EXIT_KEY, base_port + ADDR_PORT); + outb(key, base_port + ADDR_PORT); outb(key, base_port + ADDR_PORT); return 0; @@ -188,14 +197,27 @@ static int fintek_8250_rs485_config(struct uart_port *port, if (!pdata) return -EINVAL; - if (rs485->flags & SER_RS485_ENABLED) + /* Hardware do not support same RTS level on send and receive */ + if (!(rs485->flags & SER_RS485_RTS_ON_SEND) == + !(rs485->flags & SER_RS485_RTS_AFTER_SEND)) + return -EINVAL; + + if (rs485->flags & SER_RS485_ENABLED) { memset(rs485->padding, 0, sizeof(rs485->padding)); - else + config |= RS485_URA; + } else { memset(rs485, 0, sizeof(*rs485)); + } rs485->flags &= SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND; + /* Only the first port supports delays */ + if (pdata->index) { + rs485->delay_rts_before_send = 0; + rs485->delay_rts_after_send = 0; + } + if (rs485->delay_rts_before_send) { rs485->delay_rts_before_send = 1; config |= TXW4C_IRA; @@ -206,12 +228,6 @@ static int fintek_8250_rs485_config(struct uart_port *port, config |= RXW4C_IRA; } - if ((!!(rs485->flags & SER_RS485_RTS_ON_SEND)) == - (!!(rs485->flags & SER_RS485_RTS_AFTER_SEND))) - rs485->flags &= SER_RS485_ENABLED; - else - config |= RS485_URA; - if (rs485->flags & SER_RS485_RTS_ON_SEND) config |= RTS_INVERT; @@ -280,13 +296,91 @@ static void fintek_8250_goto_highspeed(struct uart_8250_port *uart, F81866_UART_CLK_MASK, F81866_UART_CLK_14_769MHZ); - uart->port.uartclk = 921600 * 16; + uart->port.uartclk = 921600 * 16; break; default: /* leave clock speed untouched */ break; } } +void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios, + struct ktermios *old) +{ + struct fintek_8250 *pdata = port->private_data; + unsigned int baud = tty_termios_baud_rate(termios); + int i; + u8 reg; + static u32 baudrate_table[] = {115200, 921600, 1152000, 1500000}; + static u8 clock_table[] = { F81866_UART_CLK_1_8432MHZ, + F81866_UART_CLK_14_769MHZ, F81866_UART_CLK_18_432MHZ, + F81866_UART_CLK_24MHZ }; + + /* + * We'll use serial8250_do_set_termios() for baud = 0, otherwise It'll + * crash on baudrate_table[i] % baud with "division by zero". + */ + if (!baud) + goto exit; + + switch (pdata->pid) { + case CHIP_ID_F81216H: + reg = RS485; + break; + case CHIP_ID_F81866: + reg = F81866_UART_CLK; + break; + default: + /* Don't change clocksource with unknown PID */ + dev_warn(port->dev, + "%s: pid: %x Not support. use default set_termios.\n", + __func__, pdata->pid); + goto exit; + } + + for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) { + if (baud > baudrate_table[i] || baudrate_table[i] % baud != 0) + continue; + + if (port->uartclk == baudrate_table[i] * 16) + break; + + if (fintek_8250_enter_key(pdata->base_port, pdata->key)) + continue; + + port->uartclk = baudrate_table[i] * 16; + + sio_write_reg(pdata, LDN, pdata->index); + sio_write_mask_reg(pdata, reg, F81866_UART_CLK_MASK, + clock_table[i]); + + fintek_8250_exit_key(pdata->base_port); + break; + } + + if (i == ARRAY_SIZE(baudrate_table)) { + baud = tty_termios_baud_rate(old); + tty_termios_encode_baud_rate(termios, baud, baud); + } + +exit: + serial8250_do_set_termios(port, termios, old); +} + +static void fintek_8250_set_termios_handler(struct uart_8250_port *uart) +{ + struct fintek_8250 *pdata = uart->port.private_data; + + switch (pdata->pid) { + case CHIP_ID_F81216H: + case CHIP_ID_F81866: + uart->port.set_termios = fintek_8250_set_termios; + break; + + default: + break; + } +} + static int probe_setup_port(struct fintek_8250 *pdata, struct uart_8250_port *uart) { @@ -373,6 +467,7 @@ int fintek_8250_probe(struct uart_8250_port *uart) memcpy(pdata, &probe_data, sizeof(probe_data)); uart->port.private_data = pdata; fintek_8250_set_rs485_handler(uart); + fintek_8250_set_termios_handler(uart); return 0; } diff --git a/drivers/tty/serial/8250/8250_fourport.c b/drivers/tty/serial/8250/8250_fourport.c index 4045180..3215b9b 100644 --- a/drivers/tty/serial/8250/8250_fourport.c +++ b/drivers/tty/serial/8250/8250_fourport.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2005 Russell King. * Data taken from include/asm-i386/serial.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c index 910bfee..6640a4c 100644 --- a/drivers/tty/serial/8250/8250_fsl.c +++ b/drivers/tty/serial/8250/8250_fsl.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/serial_reg.h> #include <linux/serial_8250.h> @@ -6,10 +7,6 @@ /* * Freescale 16550 UART "driver", Copyright (C) 2011 Paul Gortmaker. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This isn't a full driver; it just provides an alternate IRQ * handler to deal with an errata. Everything else is just * using the bog standard 8250 support. diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c index df2931e..0809ae2 100644 --- a/drivers/tty/serial/8250/8250_gsc.c +++ b/drivers/tty/serial/8250/8250_gsc.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Serial Device Initialisation for Lasi/Asp/Wax/Dino * * (c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/errno.h> diff --git a/drivers/tty/serial/8250/8250_hp300.c b/drivers/tty/serial/8250/8250_hp300.c index 115190b..3012ea0 100644 --- a/drivers/tty/serial/8250/8250_hp300.c +++ b/drivers/tty/serial/8250/8250_hp300.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for the 98626/98644/internal serial interface on hp300/hp400 * (based on the National Semiconductor INS8250/NS16550AF/WD16C552 UARTs) diff --git a/drivers/tty/serial/8250/8250_hub6.c b/drivers/tty/serial/8250/8250_hub6.c index 27124e2..273f59b 100644 --- a/drivers/tty/serial/8250/8250_hub6.c +++ b/drivers/tty/serial/8250/8250_hub6.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2005 Russell King. * Data taken from include/asm-i386/serial.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/tty/serial/8250/8250_ingenic.c b/drivers/tty/serial/8250/8250_ingenic.c index 464389b..6af8490 100644 --- a/drivers/tty/serial/8250/8250_ingenic.c +++ b/drivers/tty/serial/8250/8250_ingenic.c @@ -1,17 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2010 Lars-Peter Clausen <lars@metafoo.de> * Copyright (C) 2015 Imagination Technologies * * Ingenic SoC UART support - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/clk.h> diff --git a/drivers/tty/serial/8250/8250_lpc18xx.c b/drivers/tty/serial/8250/8250_lpc18xx.c index 99cd478..eddf119 100644 --- a/drivers/tty/serial/8250/8250_lpc18xx.c +++ b/drivers/tty/serial/8250/8250_lpc18xx.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Serial port driver for NXP LPC18xx/43xx UART * @@ -6,11 +7,6 @@ * Based on 8250_mtk.c: * Copyright (c) 2014 MundoReader S.L. * Matthias Brugger <matthias.bgg@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/clk.h> diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c index 7dddd7e..98dbc79 100644 --- a/drivers/tty/serial/8250/8250_lpss.c +++ b/drivers/tty/serial/8250/8250_lpss.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * 8250_lpss.c - Driver for UART on Intel Braswell and various other Intel SoCs * * Copyright (C) 2016 Intel Corporation * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/bitops.h> diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c index ec957cc..efa0515 100644 --- a/drivers/tty/serial/8250/8250_mid.c +++ b/drivers/tty/serial/8250/8250_mid.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * 8250_mid.c - Driver for UART on Intel Penwell and various other Intel SOCs * * Copyright (C) 2015 Intel Corporation * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/bitops.h> @@ -23,10 +20,11 @@ #define PCI_DEVICE_ID_INTEL_PNW_UART2 0x081c #define PCI_DEVICE_ID_INTEL_PNW_UART3 0x081d #define PCI_DEVICE_ID_INTEL_TNG_UART 0x1191 +#define PCI_DEVICE_ID_INTEL_CDF_UART 0x18d8 #define PCI_DEVICE_ID_INTEL_DNV_UART 0x19d8 /* Intel MID Specific registers */ -#define INTEL_MID_UART_DNV_FISR 0x08 +#define INTEL_MID_UART_FISR 0x08 #define INTEL_MID_UART_PS 0x30 #define INTEL_MID_UART_MUL 0x34 #define INTEL_MID_UART_DIV 0x38 @@ -130,7 +128,7 @@ static int dnv_handle_irq(struct uart_port *p) { struct mid8250 *mid = p->private_data; struct uart_8250_port *up = up_to_u8250p(p); - unsigned int fisr = serial_port_in(p, INTEL_MID_UART_DNV_FISR); + unsigned int fisr = serial_port_in(p, INTEL_MID_UART_FISR); u32 status; int ret = 0; int err; @@ -377,6 +375,7 @@ static const struct pci_device_id pci_ids[] = { MID_DEVICE(PCI_DEVICE_ID_INTEL_PNW_UART2, pnw_board), MID_DEVICE(PCI_DEVICE_ID_INTEL_PNW_UART3, pnw_board), MID_DEVICE(PCI_DEVICE_ID_INTEL_TNG_UART, tng_board), + MID_DEVICE(PCI_DEVICE_ID_INTEL_CDF_UART, dnv_board), MID_DEVICE(PCI_DEVICE_ID_INTEL_DNV_UART, dnv_board), { }, }; diff --git a/drivers/tty/serial/8250/8250_moxa.c b/drivers/tty/serial/8250/8250_moxa.c index d5069b2..1ee4cd9 100644 --- a/drivers/tty/serial/8250/8250_moxa.c +++ b/drivers/tty/serial/8250/8250_moxa.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * 8250_moxa.c - MOXA Smartio/Industio MUE multiport serial driver. * * Author: Mathieu OTHACEHE <m.othacehe@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c index fb45770..dd5e1ce 100644 --- a/drivers/tty/serial/8250/8250_mtk.c +++ b/drivers/tty/serial/8250/8250_mtk.c @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Mediatek 8250 driver. * * Copyright (c) 2014 MundoReader S.L. * Author: Matthias Brugger <matthias.bgg@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/clk.h> #include <linux/io.h> @@ -61,7 +52,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios, * registers to their default values. */ baud = uart_get_baud_rate(port, termios, old, - port->uartclk / 16 / 0xffff, + port->uartclk / 16 / UART_DIV_MAX, port->uartclk); if (baud <= 115200) { diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c index 1222c00..1e67a7e 100644 --- a/drivers/tty/serial/8250/8250_of.c +++ b/drivers/tty/serial/8250/8250_of.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Serial Port driver for Open Firmware platform devices * * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * */ #include <linux/console.h> #include <linux/module.h> diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index 833771b..bd40ba4 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * 8250-core based driver for the OMAP internal UART * @@ -199,7 +200,7 @@ static void omap_8250_get_divisor(struct uart_port *port, unsigned int baud, * Old custom speed handling. */ if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST) { - priv->quot = port->custom_divisor & 0xffff; + priv->quot = port->custom_divisor & UART_DIV_MAX; /* * I assume that nobody is using this. But hey, if somebody * would like to specify the divisor _and_ the mode then the @@ -358,7 +359,7 @@ static void omap_8250_set_termios(struct uart_port *port, * Ask the core to calculate the divisor for us. */ baud = uart_get_baud_rate(port, termios, old, - port->uartclk / 16 / 0xffff, + port->uartclk / 16 / UART_DIV_MAX, port->uartclk / 13); omap_8250_get_divisor(port, baud, priv); diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 0c101a7..b7e0e34 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Probe module for 8250/16550-type PCI serial ports. * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * * Copyright (C) 2001 Russell King, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License. */ #undef DEBUG #include <linux/module.h> @@ -3368,6 +3365,7 @@ static const struct pci_device_id blacklist[] = { { PCI_VDEVICE(INTEL, 0x081c), }, { PCI_VDEVICE(INTEL, 0x081d), }, { PCI_VDEVICE(INTEL, 0x1191), }, + { PCI_VDEVICE(INTEL, 0x18d8), }, { PCI_VDEVICE(INTEL, 0x19d8), }, /* Intel platforms with DesignWare UART */ diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c index 34f05ed..431e69a 100644 --- a/drivers/tty/serial/8250/8250_pnp.c +++ b/drivers/tty/serial/8250/8250_pnp.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Probe for 8250/16550-type ISAPNP serial ports. * @@ -6,10 +7,6 @@ * Copyright (C) 2001 Russell King, All Rights Reserved. * * Ported to the Linux PnP Layer - (C) Adam Belay. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License. */ #include <linux/module.h> #include <linux/pci.h> diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index f0cc04f..1143455 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Base port operations for 8250/16550-type serial ports * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * Split from 8250_core.c, Copyright (C) 2001 Russell King. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * * A note about mapbase / membase * * mapbase is the physical address of the IO port. @@ -1516,7 +1512,6 @@ static inline void __stop_tx(struct uart_8250_port *p) return; em485->active_timer = NULL; - hrtimer_cancel(&em485->start_tx_timer); __stop_tx_rs485(p); } @@ -1580,8 +1575,6 @@ static inline void start_tx_rs485(struct uart_port *port) serial8250_stop_rx(&up->port); em485->active_timer = NULL; - if (hrtimer_is_queued(&em485->stop_tx_timer)) - hrtimer_cancel(&em485->stop_tx_timer); mcr = serial8250_in_MCR(up); if (!!(up->port.rs485.flags & SER_RS485_RTS_ON_SEND) != @@ -2586,8 +2579,11 @@ static void serial8250_set_divisor(struct uart_port *port, unsigned int baud, serial_dl_write(up, quot); /* XR17V35x UARTs have an extra fractional divisor register (DLD) */ - if (up->port.type == PORT_XR17V35X) + if (up->port.type == PORT_XR17V35X) { + /* Preserve bits not related to baudrate; DLD[7:4]. */ + quot_frac |= serial_port_in(port, 0x2) & 0xf0; serial_port_out(port, 0x2, quot_frac); + } } static unsigned int serial8250_get_baud_rate(struct uart_port *port, @@ -2601,7 +2597,7 @@ static unsigned int serial8250_get_baud_rate(struct uart_port *port, * causing transmission errors. */ return uart_get_baud_rate(port, termios, old, - port->uartclk / 16 / 0xffff, + port->uartclk / 16 / UART_DIV_MAX, port->uartclk); } diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c index 4d68731..b9bcbe2 100644 --- a/drivers/tty/serial/8250/8250_pxa.c +++ b/drivers/tty/serial/8250/8250_pxa.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * drivers/tty/serial/8250/8250_pxa.c -- driver for PXA on-board UARTS * Copyright: (C) 2013 Sergei Ianovich <ynvich@gmail.com> @@ -7,12 +8,6 @@ * Copyright: (C) 2003 Monta Vista Software, Inc. * * Based on drivers/serial/8250.c by Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ #include <linux/device.h> diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c index 8a10b10..45ef506 100644 --- a/drivers/tty/serial/8250/8250_uniphier.c +++ b/drivers/tty/serial/8250/8250_uniphier.c @@ -1,15 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/clk.h> diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c index 933c268..9963a76 100644 --- a/drivers/tty/serial/8250/serial_cs.c +++ b/drivers/tty/serial/8250/serial_cs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1) /*====================================================================== A driver for PCMCIA serial devices diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c index 0475f5d..c90e503 100644 --- a/drivers/tty/serial/altera_jtaguart.c +++ b/drivers/tty/serial/altera_jtaguart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * altera_jtaguart.c -- Altera JTAG UART driver * @@ -6,11 +7,6 @@ * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com> * (C) Copyright 2008, Thomas Chou <thomas@wytron.com.tw> * (C) Copyright 2010, Tobias Klauser <tklauser@distanz.ch> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/kernel.h> diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c index 3e4b717..b88b05f 100644 --- a/drivers/tty/serial/altera_uart.c +++ b/drivers/tty/serial/altera_uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * altera_uart.c -- Altera UART driver * @@ -6,11 +7,6 @@ * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com> * (C) Copyright 2008, Thomas Chou <thomas@wytron.com.tw> * (C) Copyright 2010, Tobias Klauser <tklauser@distanz.ch> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/kernel.h> @@ -288,10 +284,10 @@ static irqreturn_t altera_uart_interrupt(int irq, void *data) return IRQ_RETVAL(isr); } -static void altera_uart_timer(unsigned long data) +static void altera_uart_timer(struct timer_list *t) { - struct uart_port *port = (void *)data; - struct altera_uart *pp = container_of(port, struct altera_uart, port); + struct altera_uart *pp = from_timer(pp, t, tmr); + struct uart_port *port = &pp->port; altera_uart_interrupt(0, port); mod_timer(&pp->tmr, jiffies + uart_poll_timeout(port)); @@ -314,7 +310,7 @@ static int altera_uart_startup(struct uart_port *port) int ret; if (!port->irq) { - setup_timer(&pp->tmr, altera_uart_timer, (unsigned long)port); + timer_setup(&pp->tmr, altera_uart_timer, 0); mod_timer(&pp->tmr, jiffies + uart_poll_timeout(port)); return 0; } diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 9ec4b8d..2c37d11 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for AMBA serial ports * @@ -6,20 +7,6 @@ * Copyright 1999 ARM Limited * Copyright (C) 2000 Deep Blue Solutions Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * * This is a generic driver for ARM AMBA-type serial ports. They * have a lot of 16550-like features, but are not register compatible. * Note that although they do have CTS, DCD and DSR inputs, they do diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 111e6a9..04af8de 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for AMBA serial ports * @@ -7,20 +8,6 @@ * Copyright (C) 2000 Deep Blue Solutions Ltd. * Copyright (C) 2010 ST-Ericsson SA * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * * This is a generic driver for ARM AMBA-type serial ports. They * have a lot of 16550-like features, but are not register compatible. * Note that although they do have CTS, DCD and DSR inputs, they do @@ -281,7 +268,6 @@ struct uart_amba_port { unsigned int old_status; unsigned int fifosize; /* vendor-specific */ unsigned int old_cr; /* state during shutdown */ - bool autorts; unsigned int fixed_baud; /* vendor-set fixed baud rate */ char type[12]; #ifdef CONFIG_DMA_ENGINE @@ -1078,9 +1064,9 @@ static inline void pl011_dma_rx_stop(struct uart_amba_port *uap) * Every polling, It checks the residue in the dma buffer and transfer * data to the tty. Also, last_residue is updated for the next polling. */ -static void pl011_dma_rx_poll(unsigned long args) +static void pl011_dma_rx_poll(struct timer_list *t) { - struct uart_amba_port *uap = (struct uart_amba_port *)args; + struct uart_amba_port *uap = from_timer(uap, t, dmarx.timer); struct tty_port *port = &uap->port.state->port; struct pl011_dmarx_data *dmarx = &uap->dmarx; struct dma_chan *rxchan = uap->dmarx.chan; @@ -1192,9 +1178,7 @@ skip_rx: dev_dbg(uap->port.dev, "could not trigger initial " "RX DMA job, fall back to interrupt mode\n"); if (uap->dmarx.poll_rate) { - init_timer(&(uap->dmarx.timer)); - uap->dmarx.timer.function = pl011_dma_rx_poll; - uap->dmarx.timer.data = (unsigned long)uap; + timer_setup(&uap->dmarx.timer, pl011_dma_rx_poll, 0); mod_timer(&uap->dmarx.timer, jiffies + msecs_to_jiffies(uap->dmarx.poll_rate)); @@ -1588,7 +1572,7 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl) TIOCMBIT(TIOCM_OUT2, UART011_CR_OUT2); TIOCMBIT(TIOCM_LOOP, UART011_CR_LBE); - if (uap->autorts) { + if (port->status & UPSTAT_AUTORTS) { /* We need to disable auto-RTS if we want to turn RTS off */ TIOCMBIT(TIOCM_RTS, UART011_CR_RTSEN); } @@ -1842,7 +1826,7 @@ static void pl011_disable_uart(struct uart_amba_port *uap) { unsigned int cr; - uap->autorts = false; + uap->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS); spin_lock_irq(&uap->port.lock); cr = pl011_read(uap, REG_CR); uap->old_cr = cr; @@ -2028,10 +2012,10 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios, old_cr |= UART011_CR_RTSEN; old_cr |= UART011_CR_CTSEN; - uap->autorts = true; + port->status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; } else { old_cr &= ~(UART011_CR_CTSEN | UART011_CR_RTSEN); - uap->autorts = false; + port->status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS); } if (uap->vendor->oversampling) { diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c index dd60ed9..60cd133 100644 --- a/drivers/tty/serial/apbuart.c +++ b/drivers/tty/serial/apbuart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for GRLIB serial ports (APBUART) * diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c index decc7f3..db5df3d 100644 --- a/drivers/tty/serial/ar933x_uart.c +++ b/drivers/tty/serial/ar933x_uart.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Atheros AR933X SoC built-in UART driver * * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. */ #include <linux/module.h> diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c index 77fe306..2599f9e 100644 --- a/drivers/tty/serial/arc_uart.c +++ b/drivers/tty/serial/arc_uart.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * ARC On-Chip(fpga) UART Driver * * Copyright (C) 2010-2012 Synopsys, Inc. (www.synopsys.com) * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * vineetg: July 10th 2012 * -Decoupled the driver from arch/arc * +Using platform_get_resource() for irq/membase (thx to bfin_uart.c) diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 7551cab..efa2561 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Atmel AT91 Serial ports * Copyright (C) 2003 Rick Bronson @@ -6,21 +7,6 @@ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * * DMA support added by Chip Coldwell. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include <linux/tty.h> #include <linux/ioport.h> @@ -171,6 +157,7 @@ struct atmel_uart_port { bool has_hw_timer; struct timer_list uart_timer; + bool tx_stopped; bool suspended; unsigned int pending; unsigned int pending_status; @@ -380,6 +367,10 @@ static int atmel_config_rs485(struct uart_port *port, */ static u_int atmel_tx_empty(struct uart_port *port) { + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); + + if (atmel_port->tx_stopped) + return TIOCSER_TEMT; return (atmel_uart_readl(port, ATMEL_US_CSR) & ATMEL_US_TXEMPTY) ? TIOCSER_TEMT : 0; @@ -485,6 +476,7 @@ static void atmel_stop_tx(struct uart_port *port) * is fully transmitted. */ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS); + atmel_port->tx_stopped = true; /* Disable interrupts */ atmel_uart_writel(port, ATMEL_US_IDR, atmel_port->tx_done_mask); @@ -521,6 +513,7 @@ static void atmel_start_tx(struct uart_port *port) /* re-enable the transmitter */ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN); + atmel_port->tx_stopped = false; } /* @@ -1178,10 +1171,11 @@ chan_err: return -EINVAL; } -static void atmel_uart_timer_callback(unsigned long data) +static void atmel_uart_timer_callback(struct timer_list *t) { - struct uart_port *port = (void *)data; - struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); + struct atmel_uart_port *atmel_port = from_timer(atmel_port, t, + uart_timer); + struct uart_port *port = &atmel_port->uart; if (!atomic_read(&atmel_port->tasklet_shutdown)) { tasklet_schedule(&atmel_port->tasklet_rx); @@ -1667,29 +1661,6 @@ static void atmel_init_property(struct atmel_uart_port *atmel_port, } } -static void atmel_init_rs485(struct uart_port *port, - struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - - struct serial_rs485 *rs485conf = &port->rs485; - u32 rs485_delay[2]; - - /* rs485 properties */ - if (of_property_read_u32_array(np, "rs485-rts-delay", - rs485_delay, 2) == 0) { - rs485conf->delay_rts_before_send = rs485_delay[0]; - rs485conf->delay_rts_after_send = rs485_delay[1]; - rs485conf->flags = 0; - } - - if (of_get_property(np, "rs485-rx-during-tx", NULL)) - rs485conf->flags |= SER_RS485_RX_DURING_TX; - - if (of_get_property(np, "linux,rs485-enabled-at-boot-time", NULL)) - rs485conf->flags |= SER_RS485_ENABLED; -} - static void atmel_set_ops(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); @@ -1866,10 +1837,9 @@ static int atmel_startup(struct uart_port *port) atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); /* enable xmit & rcvr */ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); + atmel_port->tx_stopped = false; - setup_timer(&atmel_port->uart_timer, - atmel_uart_timer_callback, - (unsigned long)port); + timer_setup(&atmel_port->uart_timer, atmel_uart_timer_callback, 0); if (atmel_use_pdc_rx(port)) { /* set UART timeout */ @@ -2122,6 +2092,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, /* disable receiver and transmitter */ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXDIS | ATMEL_US_RXDIS); + atmel_port->tx_stopped = true; /* mode */ if (port->rs485.flags & SER_RS485_ENABLED) { @@ -2207,6 +2178,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, atmel_uart_writel(port, ATMEL_US_BRGR, quot); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); + atmel_port->tx_stopped = false; /* restore interrupts */ atmel_uart_writel(port, ATMEL_US_IER, imr); @@ -2373,7 +2345,7 @@ static int atmel_init_port(struct atmel_uart_port *atmel_port, atmel_init_property(atmel_port, pdev); atmel_set_ops(port); - atmel_init_rs485(port, pdev); + of_get_rs485_mode(pdev->dev.of_node, &port->rs485); port->iotype = UPIO_MEM; port->flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP; @@ -2450,6 +2422,7 @@ static void atmel_console_write(struct console *co, const char *s, u_int count) /* Make sure that tx path is actually able to send characters */ atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN); + atmel_port->tx_stopped = false; uart_console_write(port, s, count, atmel_console_putchar); @@ -2511,6 +2484,7 @@ static int __init atmel_console_setup(struct console *co, char *options) { int ret; struct uart_port *port = &atmel_ports[co->index].uart; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); int baud = 115200; int bits = 8; int parity = 'n'; @@ -2528,6 +2502,7 @@ static int __init atmel_console_setup(struct console *co, char *options) atmel_uart_writel(port, ATMEL_US_IDR, -1); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); + atmel_port->tx_stopped = false; if (options) uart_parse_options(options, &baud, &parity, &bits, &flow); diff --git a/drivers/tty/serial/atmel_serial.h b/drivers/tty/serial/atmel_serial.h index bd25605..ba3a243 100644 --- a/drivers/tty/serial/atmel_serial.h +++ b/drivers/tty/serial/atmel_serial.h @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * include/linux/atmel_serial.h * @@ -6,11 +7,6 @@ * * USART registers. * Based on AT91RM9200 datasheet revision E. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #ifndef ATMEL_SERIAL_H diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c index 8c48c37..9d1b7bf 100644 --- a/drivers/tty/serial/bcm63xx_uart.c +++ b/drivers/tty/serial/bcm63xx_uart.c @@ -1,8 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Derived from many drivers using generic_serial interface. * * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c index 6b03fb1..4ccca5d 100644 --- a/drivers/tty/serial/bfin_sport_uart.c +++ b/drivers/tty/serial/bfin_sport_uart.c @@ -1,11 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Blackfin On-Chip Sport Emulated UART Driver * * Copyright 2006-2009 Analog Devices Inc. * * Enter bugs at http://blackfin.uclinux.org/ - * - * Licensed under the GPL-2 or later. */ /* @@ -584,7 +583,7 @@ static void sport_set_termios(struct uart_port *port, spin_unlock_irqrestore(&up->port.lock, flags); } -struct uart_ops sport_uart_ops = { +static const struct uart_ops sport_uart_ops = { .tx_empty = sport_tx_empty, .set_mctrl = sport_set_mctrl, .get_mctrl = sport_get_mctrl, diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h index e4510ea..4b12f45 100644 --- a/drivers/tty/serial/bfin_sport_uart.h +++ b/drivers/tty/serial/bfin_sport_uart.h @@ -1,11 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Blackfin On-Chip Sport Emulated UART Driver * * Copyright 2006-2008 Analog Devices Inc. * * Enter bugs at http://blackfin.uclinux.org/ - * - * Licensed under the GPL-2 or later. */ /* diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c index 293ecbb..4755fa6 100644 --- a/drivers/tty/serial/bfin_uart.c +++ b/drivers/tty/serial/bfin_uart.c @@ -1,11 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Blackfin On-Chip Serial Driver * * Copyright 2006-2011 Analog Devices Inc. * * Enter bugs at http://blackfin.uclinux.org/ - * - * Licensed under the GPL-2 or later. */ #if defined(CONFIG_SERIAL_BFIN_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -456,8 +455,9 @@ static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart) tty_flip_buffer_push(&uart->port.state->port); } -void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart) +void bfin_serial_rx_dma_timeout(struct timer_list *t) { + struct bfin_serial_port *uart = from_timer(uart, t, rx_dma_timer); int x_pos, pos; unsigned long flags; @@ -624,8 +624,6 @@ static int bfin_serial_startup(struct uart_port *port) set_dma_start_addr(uart->rx_dma_channel, (unsigned long)uart->rx_dma_buf.buf); enable_dma(uart->rx_dma_channel); - uart->rx_dma_timer.data = (unsigned long)(uart); - uart->rx_dma_timer.function = (void *)bfin_serial_rx_dma_timeout; uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES; add_timer(&(uart->rx_dma_timer)); #else @@ -1316,7 +1314,7 @@ static int bfin_serial_probe(struct platform_device *pdev) } uart->rx_dma_channel = res->start; - init_timer(&(uart->rx_dma_timer)); + timer_setup(&uart->rx_dma_timer, bfin_serial_rx_dma_timeout, 0); #endif #if defined(SERIAL_BFIN_CTSRTS) || \ diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c index ac13286..98f193a 100644 --- a/drivers/tty/serial/clps711x.c +++ b/drivers/tty/serial/clps711x.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for CLPS711x serial ports * @@ -5,11 +6,6 @@ * * Copyright 1999 ARM Limited * Copyright (C) 2000 Deep Blue Solutions Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #if defined(CONFIG_SERIAL_CLPS711X_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/cpm_uart/cpm_uart.h b/drivers/tty/serial/cpm_uart/cpm_uart.h index 0ad027b..9f175a9 100644 --- a/drivers/tty/serial/cpm_uart/cpm_uart.h +++ b/drivers/tty/serial/cpm_uart/cpm_uart.h @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for CPM (SCC/SMC) serial ports * @@ -5,11 +6,6 @@ * * 2006 (c) MontaVista Software, Inc. * Vitaly Bordug <vbordug@ru.mvista.com> - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - * */ #ifndef CPM_UART_H #define CPM_UART_H diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c index 9ac142c..24a5f05 100644 --- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c +++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for CPM (SCC/SMC) serial ports; core driver * @@ -12,21 +13,6 @@ * (C) 2004 Intracom, S.A. * (C) 2005-2006 MontaVista Software, Inc. * Vitaly Bordug <vbordug@ru.mvista.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include <linux/module.h> diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c index 6d3b22e..4eba17f 100644 --- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c +++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for CPM (SCC/SMC) serial ports; CPM1 definitions * @@ -8,21 +9,6 @@ * (C) 2004 Intracom, S.A. * (C) 2006 MontaVista Software, Inc. * Vitaly Bordug <vbordug@ru.mvista.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include <linux/module.h> diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c index f46d2ca..e3bff06 100644 --- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c +++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for CPM (SCC/SMC) serial ports; CPM2 definitions * @@ -8,21 +9,6 @@ * (C) 2004 Intracom, S.A. * (C) 2006 MontaVista Software, Inc. * Vitaly Bordug <vbordug@ru.mvista.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include <linux/module.h> diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c index 02ad695..f460cca 100644 --- a/drivers/tty/serial/digicolor-usart.c +++ b/drivers/tty/serial/digicolor-usart.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Conexant Digicolor serial ports (USART) * * Author: Baruch Siach <baruch@tkos.co.il> * * Copyright (C) 2014 Paradox Innovation Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/module.h> diff --git a/drivers/tty/serial/dz.c b/drivers/tty/serial/dz.c index ff465ff..7b57e84 100644 --- a/drivers/tty/serial/dz.c +++ b/drivers/tty/serial/dz.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * dz.c: Serial port driver for DECstations equipped * with the DZ chipset. diff --git a/drivers/tty/serial/earlycon-arm-semihost.c b/drivers/tty/serial/earlycon-arm-semihost.c index 6bbeb69..fa096c1 100644 --- a/drivers/tty/serial/earlycon-arm-semihost.c +++ b/drivers/tty/serial/earlycon-arm-semihost.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2012 ARM Ltd. * Author: Marc Zyngier <marc.zyngier@arm.com> @@ -5,18 +6,6 @@ * Adapted for ARM and earlycon: * Copyright (C) 2014 Linaro Ltd. * Author: Rob Herring <robh@kernel.org> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> #include <linux/console.h> diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index 98928f0..4c8b80f 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2014 Linaro Ltd. * Author: Rob Herring <robh@kernel.org> @@ -5,10 +6,6 @@ * Based on 8250 earlycon: * (c) Copyright 2004 Hewlett-Packard Development Company, L.P. * Bjorn Helgaas <bjorn.helgaas@hp.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c index 9fff25b..d6b5e54 100644 --- a/drivers/tty/serial/efm32-uart.c +++ b/drivers/tty/serial/efm32-uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #if defined(CONFIG_SERIAL_EFM32_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) #define SUPPORT_SYSRQ #endif diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index f025218..c84e6f0 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Freescale lpuart serial port driver * * Copyright 2012-2014 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #if defined(CONFIG_SERIAL_FSL_LPUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -1632,12 +1628,11 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios, { struct lpuart_port *sport = container_of(port, struct lpuart_port, port); unsigned long flags; - unsigned long ctrl, old_ctrl, bd, modem; + unsigned long ctrl, old_ctrl, modem; unsigned int baud; unsigned int old_csize = old ? old->c_cflag & CSIZE : CS8; ctrl = old_ctrl = lpuart32_read(&sport->port, UARTCTRL); - bd = lpuart32_read(&sport->port, UARTBAUD); modem = lpuart32_read(&sport->port, UARTMODIR); /* * only support CS8 and CS7, and for CS7 must enable PE. @@ -2212,6 +2207,24 @@ static int lpuart_probe(struct platform_device *pdev) if (ret) goto failed_attach_port; + of_get_rs485_mode(np, &sport->port.rs485); + + if (sport->port.rs485.flags & SER_RS485_RX_DURING_TX) { + dev_err(&pdev->dev, "driver doesn't support RX during TX\n"); + return -ENOSYS; + } + + if (sport->port.rs485.delay_rts_before_send || + sport->port.rs485.delay_rts_after_send) { + dev_err(&pdev->dev, "driver doesn't support RTS delays\n"); + return -ENOSYS; + } + + if (sport->port.rs485.flags & SER_RS485_ENABLED) { + sport->port.rs485.flags |= SER_RS485_RTS_ON_SEND; + writeb(UARTMODEM_TXRTSE, sport->port.membase + UARTMODEM); + } + sport->dma_tx_chan = dma_request_slave_channel(sport->port.dev, "tx"); if (!sport->dma_tx_chan) dev_info(sport->port.dev, "DMA tx channel request failed, " @@ -2222,12 +2235,6 @@ static int lpuart_probe(struct platform_device *pdev) dev_info(sport->port.dev, "DMA rx channel request failed, " "operating without rx DMA\n"); - if (of_property_read_bool(np, "linux,rs485-enabled-at-boot-time")) { - sport->port.rs485.flags |= SER_RS485_ENABLED; - sport->port.rs485.flags |= SER_RS485_RTS_ON_SEND; - writeb(UARTMODEM_TXRTSE, sport->port.membase + UARTMODEM); - } - return 0; failed_attach_port: diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c index fe92d74..ad374f7 100644 --- a/drivers/tty/serial/icom.c +++ b/drivers/tty/serial/icom.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * icom.c * @@ -6,21 +7,6 @@ * Serial device driver. * * Based on code from serial.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include <linux/module.h> #include <linux/kernel.h> diff --git a/drivers/tty/serial/icom.h b/drivers/tty/serial/icom.h index c8029e0..8a77e73 100644 --- a/drivers/tty/serial/icom.h +++ b/drivers/tty/serial/icom.h @@ -1,23 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * icom.h * * Copyright (C) 2001 Michael Anderson, IBM Corporation * * Serial device driver include file. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/serial_core.h> diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index f190a84..473f4f8 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /**************************************************************************** * * Driver for the IFX 6x60 spi modem. @@ -10,20 +11,6 @@ * Copyright (C) 2009, 2010 Intel Corp * Russ Gorby <russ.gorby@intel.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, - * USA - * * Driver modified by Intel from Option gtm501l_spi.c * * Notes @@ -1029,9 +1016,8 @@ static int ifx_spi_spi_probe(struct spi_device *spi) spin_lock_init(&ifx_dev->write_lock); spin_lock_init(&ifx_dev->power_lock); ifx_dev->power_status = 0; - init_timer(&ifx_dev->spi_timer); - ifx_dev->spi_timer.function = ifx_spi_timeout; - ifx_dev->spi_timer.data = (unsigned long)ifx_dev; + setup_timer(&ifx_dev->spi_timer, ifx_spi_timeout, + (unsigned long)ifx_dev); ifx_dev->modem = pl_data->modem_type; ifx_dev->use_dma = pl_data->use_dma; ifx_dev->max_hz = pl_data->max_hz; diff --git a/drivers/tty/serial/ifx6x60.h b/drivers/tty/serial/ifx6x60.h index 4fbddc2..c5a2514 100644 --- a/drivers/tty/serial/ifx6x60.h +++ b/drivers/tty/serial/ifx6x60.h @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /**************************************************************************** * * Driver for the IFX spi modem. @@ -5,23 +6,6 @@ * Copyright (C) 2009, 2010 Intel Corp * Jim Stanley <jim.stanley@intel.com> * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, - * USA - * - * - * *****************************************************************************/ #ifndef _IFX6X60_H #define _IFX6X60_H diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index dfeff39..a67a606 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Motorola/Freescale IMX serial ports * @@ -5,16 +6,6 @@ * * Author: Sascha Hauer <sascha@saschahauer.de> * Copyright (C) 2004 Pengutronix - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #if defined(CONFIG_SERIAL_IMX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -334,7 +325,8 @@ static void imx_port_rts_active(struct imx_port *sport, unsigned long *ucr2) { *ucr2 &= ~(UCR2_CTSC | UCR2_CTS); - mctrl_gpio_set(sport->gpios, sport->port.mctrl | TIOCM_RTS); + sport->port.mctrl |= TIOCM_RTS; + mctrl_gpio_set(sport->gpios, sport->port.mctrl); } static void imx_port_rts_inactive(struct imx_port *sport, unsigned long *ucr2) @@ -342,7 +334,8 @@ static void imx_port_rts_inactive(struct imx_port *sport, unsigned long *ucr2) *ucr2 &= ~UCR2_CTSC; *ucr2 |= UCR2_CTS; - mctrl_gpio_set(sport->gpios, sport->port.mctrl & ~TIOCM_RTS); + sport->port.mctrl &= ~TIOCM_RTS; + mctrl_gpio_set(sport->gpios, sport->port.mctrl); } static void imx_port_rts_auto(struct imx_port *sport, unsigned long *ucr2) @@ -714,8 +707,6 @@ static void imx_disable_rx_int(struct imx_port *sport) { unsigned long temp; - sport->dma_is_rxing = 1; - /* disable the receiver ready and aging timer interrupts */ temp = readl(sport->port.membase + UCR1); temp &= ~(UCR1_RRDYEN); @@ -732,29 +723,6 @@ static void imx_disable_rx_int(struct imx_port *sport) } static void clear_rx_errors(struct imx_port *sport); -static int start_rx_dma(struct imx_port *sport); -/* - * If the RXFIFO is filled with some data, and then we - * arise a DMA operation to receive them. - */ -static void imx_dma_rxint(struct imx_port *sport) -{ - unsigned long temp; - unsigned long flags; - - spin_lock_irqsave(&sport->port.lock, flags); - - temp = readl(sport->port.membase + USR2); - if ((temp & USR2_RDR) && !sport->dma_is_rxing) { - - imx_disable_rx_int(sport); - - /* tell the DMA to receive the data. */ - start_rx_dma(sport); - } - - spin_unlock_irqrestore(&sport->port.lock, flags); -} /* * We have a modem side uart, so the meanings of RTS and CTS are inverted. @@ -816,11 +784,8 @@ static irqreturn_t imx_int(int irq, void *dev_id) sts = readl(sport->port.membase + USR1); sts2 = readl(sport->port.membase + USR2); - if (sts & (USR1_RRDY | USR1_AGTIM)) { - if (sport->dma_is_enabled) - imx_dma_rxint(sport); - else - imx_rxint(irq, dev_id); + if (!sport->dma_is_enabled && (sts & (USR1_RRDY | USR1_AGTIM))) { + imx_rxint(irq, dev_id); ret = IRQ_HANDLED; } @@ -1074,6 +1039,7 @@ static int start_rx_dma(struct imx_port *sport) desc->callback_param = sport; dev_dbg(dev, "RX: prepare for the DMA.\n"); + sport->dma_is_rxing = 1; sport->rx_cookie = dmaengine_submit(desc); dma_async_issue_pending(chan); return 0; @@ -1165,7 +1131,7 @@ static int imx_uart_dma_init(struct imx_port *sport) goto err; } - sport->rx_buf = kzalloc(PAGE_SIZE, GFP_KERNEL); + sport->rx_buf = kzalloc(RX_BUF_SIZE, GFP_KERNEL); if (!sport->rx_buf) { ret = -ENOMEM; goto err; @@ -1207,10 +1173,6 @@ static void imx_enable_dma(struct imx_port *sport) temp |= UCR1_RDMAEN | UCR1_TDMAEN | UCR1_ATDMAEN; writel(temp, sport->port.membase + UCR1); - temp = readl(sport->port.membase + UCR2); - temp |= UCR2_ATEN; - writel(temp, sport->port.membase + UCR2); - imx_setup_ufcr(sport, TXTL_DMA, RXTL_DMA); sport->dma_is_enabled = 1; @@ -1411,15 +1373,19 @@ static void imx_flush_buffer(struct uart_port *port) temp = readl(sport->port.membase + UCR1); temp &= ~UCR1_TDMAEN; writel(temp, sport->port.membase + UCR1); - sport->dma_is_txing = false; + sport->dma_is_txing = 0; } /* * According to the Reference Manual description of the UART SRST bit: + * * "Reset the transmit and receive state machines, * all FIFOs and register USR1, USR2, UBIR, UBMR, UBRC, URXD, UTXD - * and UTS[6-3]". As we don't need to restore the old values from - * USR1, USR2, URXD, UTXD, only save/restore the other four registers + * and UTS[6-3]". + * + * We don't need to restore the old values from USR1, USR2, URXD and + * UTXD. UBRC is read only, so only save/restore the other three + * registers. */ ubir = readl(sport->port.membase + UBIR); ubmr = readl(sport->port.membase + UBMR); @@ -2051,6 +2017,8 @@ static int serial_imx_probe_dt(struct imx_port *sport, if (of_get_property(np, "rts-gpios", NULL)) sport->have_rtsgpio = 1; + of_get_rs485_mode(np, &sport->port.rs485); + return 0; } #else @@ -2112,12 +2080,9 @@ static int serial_imx_probe(struct platform_device *pdev) sport->port.fifosize = 32; sport->port.ops = &imx_pops; sport->port.rs485_config = imx_rs485_config; - sport->port.rs485.flags = - SER_RS485_RTS_ON_SEND | SER_RS485_RX_DURING_TX; + sport->port.rs485.flags |= SER_RS485_RTS_ON_SEND; sport->port.flags = UPF_BOOT_AUTOCONF; - init_timer(&sport->timer); - sport->timer.function = imx_timeout; - sport->timer.data = (unsigned long)sport; + setup_timer(&sport->timer, imx_timeout, (unsigned long)sport); sport->gpios = mctrl_gpio_init(&sport->port, 0); if (IS_ERR(sport->gpios)) @@ -2346,11 +2311,39 @@ static int imx_serial_port_resume(struct device *dev) return 0; } +static int imx_serial_port_freeze(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct imx_port *sport = platform_get_drvdata(pdev); + + uart_suspend_port(&imx_reg, &sport->port); + + /* Needed to enable clock in suspend_noirq */ + return clk_prepare(sport->clk_ipg); +} + +static int imx_serial_port_thaw(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct imx_port *sport = platform_get_drvdata(pdev); + + uart_resume_port(&imx_reg, &sport->port); + + clk_unprepare(sport->clk_ipg); + + return 0; +} + static const struct dev_pm_ops imx_serial_port_pm_ops = { .suspend_noirq = imx_serial_port_suspend_noirq, .resume_noirq = imx_serial_port_resume_noirq, + .freeze_noirq = imx_serial_port_suspend_noirq, + .restore_noirq = imx_serial_port_resume_noirq, .suspend = imx_serial_port_suspend, .resume = imx_serial_port_resume, + .freeze = imx_serial_port_freeze, + .thaw = imx_serial_port_thaw, + .restore = imx_serial_port_thaw, }; static struct platform_driver serial_imx_driver = { diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c index 906ee77..d8a1cdd 100644 --- a/drivers/tty/serial/ioc3_serial.c +++ b/drivers/tty/serial/ioc3_serial.c @@ -1,8 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Copyright (C) 2005 Silicon Graphics, Inc. All Rights Reserved. */ diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c index 43d7d32..db5b979 100644 --- a/drivers/tty/serial/ioc4_serial.c +++ b/drivers/tty/serial/ioc4_serial.c @@ -1,8 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Copyright (C) 2003-2006 Silicon Graphics, Inc. All Rights Reserved. */ diff --git a/drivers/tty/serial/ip22zilog.c b/drivers/tty/serial/ip22zilog.c index 7ddddb4..8c81073 100644 --- a/drivers/tty/serial/ip22zilog.c +++ b/drivers/tty/serial/ip22zilog.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for Zilog serial chips found on SGI workstations and * servers. This driver could actually be made more generic. diff --git a/drivers/tty/serial/jsm/jsm.h b/drivers/tty/serial/jsm/jsm.h index 0b79b87..7a128aa 100644 --- a/drivers/tty/serial/jsm/jsm.h +++ b/drivers/tty/serial/jsm/jsm.h @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /************************************************************************ * Copyright 2003 Digi International (www.digi.com) * * Copyright (C) 2004 IBM Corporation. All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the - * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * * Contact Information: * Scott H Kilau <Scott_Kilau@digi.com> * Wendy Xiong <wendyx@us.ibm.com> diff --git a/drivers/tty/serial/jsm/jsm_cls.c b/drivers/tty/serial/jsm/jsm_cls.c index 4eb12a9..c061a7b 100644 --- a/drivers/tty/serial/jsm/jsm_cls.c +++ b/drivers/tty/serial/jsm/jsm_cls.c @@ -1,17 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2003 Digi International (www.digi.com) * Scott H Kilau <Scott_Kilau at digi dot com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the - * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE! * * This is shared code between Digi's CVS archive and the diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c index 102d499..592e51d 100644 --- a/drivers/tty/serial/jsm/jsm_driver.c +++ b/drivers/tty/serial/jsm/jsm_driver.c @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /************************************************************************ * Copyright 2003 Digi International (www.digi.com) * * Copyright (C) 2004 IBM Corporation. All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the - * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * * Contact Information: * Scott H Kilau <Scott_Kilau@digi.com> * Wendy Xiong <wendyx@us.ibm.com> diff --git a/drivers/tty/serial/jsm/jsm_neo.c b/drivers/tty/serial/jsm/jsm_neo.c index c6fdd63..4718560 100644 --- a/drivers/tty/serial/jsm/jsm_neo.c +++ b/drivers/tty/serial/jsm/jsm_neo.c @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /************************************************************************ * Copyright 2003 Digi International (www.digi.com) * * Copyright (C) 2004 IBM Corporation. All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the - * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * * Contact Information: * Scott H Kilau <Scott_Kilau@digi.com> * Wendy Xiong <wendyx@us.ibm.com> diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c index ec7d838..469927d 100644 --- a/drivers/tty/serial/jsm/jsm_tty.c +++ b/drivers/tty/serial/jsm/jsm_tty.c @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /************************************************************************ * Copyright 2003 Digi International (www.digi.com) * * Copyright (C) 2004 IBM Corporation. All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the - * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * * Contact Information: * Scott H Kilau <Scott_Kilau@digi.com> * Ananda Venkatarman <mansarov@us.ibm.com> @@ -36,7 +27,7 @@ static void jsm_carrier(struct jsm_channel *ch); static inline int jsm_get_mstat(struct jsm_channel *ch) { unsigned char mstat; - unsigned result; + int result; jsm_dbg(IOCTL, &ch->ch_bd->pci_dev, "start\n"); @@ -124,6 +115,7 @@ static void jsm_tty_set_mctrl(struct uart_port *port, unsigned int mctrl) static void jsm_tty_write(struct uart_port *port) { struct jsm_channel *channel; + channel = container_of(port, struct jsm_channel, uart_port); channel->ch_bd->bd_ops->copy_data_from_queue_to_uart(channel); } @@ -275,14 +267,12 @@ static int jsm_tty_open(struct uart_port *port) static void jsm_tty_close(struct uart_port *port) { struct jsm_board *bd; - struct ktermios *ts; struct jsm_channel *channel = container_of(port, struct jsm_channel, uart_port); jsm_dbg(CLOSE, &channel->ch_bd->pci_dev, "start\n"); bd = channel->ch_bd; - ts = &port->state->port.tty->termios; channel->ch_flags &= ~(CH_STOPI); @@ -473,12 +463,11 @@ int jsm_uart_port_init(struct jsm_board *brd) } else set_bit(line, linemap); brd->channels[i]->uart_port.line = line; - rc = uart_add_one_port (&jsm_uart_driver, &brd->channels[i]->uart_port); - if (rc){ + rc = uart_add_one_port(&jsm_uart_driver, &brd->channels[i]->uart_port); + if (rc) { printk(KERN_INFO "jsm: Port %d failed. Aborting...\n", i); return rc; - } - else + } else printk(KERN_INFO "jsm: Port %d added\n", i); } @@ -541,7 +530,7 @@ void jsm_input(struct jsm_channel *ch) tp = port->tty; bd = ch->ch_bd; - if(!bd) + if (!bd) return; spin_lock_irqsave(&ch->ch_lock, lock_flags); @@ -781,7 +770,7 @@ void jsm_check_queue_flow_control(struct jsm_channel *ch) if (qleft < 256) { /* HWFLOW */ if (ch->ch_c_cflag & CRTSCTS) { - if(!(ch->ch_flags & CH_RECEIVER_OFF)) { + if (!(ch->ch_flags & CH_RECEIVER_OFF)) { bd_ops->disable_receiver(ch); ch->ch_flags |= (CH_RECEIVER_OFF); jsm_dbg(READ, &ch->ch_bd->pci_dev, diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c index 117df15..ed2b030 100644 --- a/drivers/tty/serial/kgdb_nmi.c +++ b/drivers/tty/serial/kgdb_nmi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * KGDB NMI serial console * @@ -6,10 +7,6 @@ * Colin Cross <ccross@android.com> * Copyright 2012 Linaro Ltd. * Anton Vorontsov <anton.vorontsov@linaro.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. */ #include <linux/kernel.h> diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c index a260cde..ddb46fa 100644 --- a/drivers/tty/serial/kgdboc.c +++ b/drivers/tty/serial/kgdboc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Based on the same principle as kgdboe using the NETPOLL api, this * driver uses a console polling api to implement a gdb serial inteface @@ -6,10 +7,6 @@ * Maintainer: Jason Wessel <jason.wessel@windriver.com> * * 2007-2008 (c) Jason Wessel - Wind River Systems, Inc. - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/kernel.h> #include <linux/ctype.h> diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c index 22df94f..0441282 100644 --- a/drivers/tty/serial/lantiq.c +++ b/drivers/tty/serial/lantiq.c @@ -1,19 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * * Copyright (C) 2004 Infineon IFAP DC COM CPE * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> * Copyright (C) 2007 John Crispin <john@phrozen.org> diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c index cea57ff..d1d7326 100644 --- a/drivers/tty/serial/lpc32xx_hs.c +++ b/drivers/tty/serial/lpc32xx_hs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * High Speed Serial Ports on NXP LPC32xx SoC * @@ -6,16 +7,6 @@ * * Copyright (C) 2010 NXP Semiconductors * Copyright (C) 2012 Roland Stigge - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/module.h> diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c index 5b3bd95..7b83a8a 100644 --- a/drivers/tty/serial/m32r_sio.c +++ b/drivers/tty/serial/m32r_sio.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * m32r_sio.c * @@ -8,11 +9,6 @@ * * Copyright (C) 2001 Russell King. * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ /* @@ -511,9 +507,9 @@ static void serial_unlink_irq_chain(struct uart_sio_port *up) /* * This function is used to handle ports that do not have an interrupt. */ -static void m32r_sio_timeout(unsigned long data) +static void m32r_sio_timeout(struct timer_list *t) { - struct uart_sio_port *up = (struct uart_sio_port *)data; + struct uart_sio_port *up = from_timer(up, t, timer); unsigned int timeout; unsigned int sts; @@ -576,7 +572,6 @@ static int m32r_sio_startup(struct uart_port *port) timeout = timeout > 6 ? (timeout / 2 - 2) : 1; - up->timer.data = (unsigned long)up; mod_timer(&up->timer, jiffies + timeout); } else { retval = serial_link_irq_chain(up); @@ -907,8 +902,7 @@ static void __init m32r_sio_register_ports(struct uart_driver *drv) up->port.line = i; up->port.ops = &m32r_sio_pops; - init_timer(&up->timer); - up->timer.function = m32r_sio_timeout; + timer_setup(&up->timer, m32r_sio_timeout, 0); uart_add_one_port(drv, &up->port); } diff --git a/drivers/tty/serial/m32r_sio_reg.h b/drivers/tty/serial/m32r_sio_reg.h index 4671473..6eed488 100644 --- a/drivers/tty/serial/m32r_sio_reg.h +++ b/drivers/tty/serial/m32r_sio_reg.h @@ -1,12 +1,10 @@ +// SPDX-License-Identifier: GPL-1.0+ /* * m32r_sio_reg.h * * Copyright (C) 1992, 1994 by Theodore Ts'o. * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org> * - * Redistribution of this file is permitted under the terms of the GNU - * Public License (GPL) - * * These are the UART port assignments, expressed as offsets from the base * register. These assignments should hold for any serial port based on * a 8250, 16450, or 16550(A). diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c index ace8264..27d6049 100644 --- a/drivers/tty/serial/max3100.c +++ b/drivers/tty/serial/max3100.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * * Copyright (C) 2008 Christian Pellegrin <chripell@evolware.org> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * * Notes: the MAX3100 doesn't provide an interrupt on CTS so we have * to use polling for flow control. TX empty IRQ is unusable, since * writing conf clears FIFO buffer and we cannot have this interrupt @@ -263,7 +258,7 @@ static void max3100_work(struct work_struct *w) struct max3100_port *s = container_of(w, struct max3100_port, work); int rxchars; u16 tx, rx; - int conf, cconf, rts, crts; + int conf, cconf, crts; struct circ_buf *xmit = &s->port.state->xmit; dev_dbg(&s->spi->dev, "%s\n", __func__); @@ -274,7 +269,6 @@ static void max3100_work(struct work_struct *w) conf = s->conf; cconf = s->conf_commit; s->conf_commit = 0; - rts = s->rts; crts = s->rts_commit; s->rts_commit = 0; spin_unlock(&s->conf_lock); @@ -436,7 +430,6 @@ max3100_set_termios(struct uart_port *port, struct ktermios *termios, dev_dbg(&s->spi->dev, "%s\n", __func__); cflag = termios->c_cflag; - param_new = 0; param_mask = 0; baud = tty_termios_baud_rate(termios); @@ -787,9 +780,8 @@ static int max3100_probe(struct spi_device *spi) max3100s[i]->poll_time = 1; max3100s[i]->max3100_hw_suspend = pdata->max3100_hw_suspend; max3100s[i]->minor = i; - init_timer(&max3100s[i]->timer); - max3100s[i]->timer.function = max3100_timeout; - max3100s[i]->timer.data = (unsigned long) max3100s[i]; + setup_timer(&max3100s[i]->timer, max3100_timeout, + (unsigned long)max3100s[i]); dev_dbg(&spi->dev, "%s: adding port %d\n", __func__, i); max3100s[i]->port.irq = max3100s[i]->irq; diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 9dfedbe..ecb6513 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Maxim (Dallas) MAX3107/8/9, MAX14830 serial driver * @@ -6,11 +7,6 @@ * Based on max3100.c, by Christian Pellegrin <chripell@evolware.org> * Based on max3110.c, by Feng Tang <feng.tang@intel.com> * Based on max3107.c, by Aavamobile - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/bitops.h> diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c index 02eb322..7dbfb4c 100644 --- a/drivers/tty/serial/mcf.c +++ b/drivers/tty/serial/mcf.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /****************************************************************************/ /* * mcf.c -- Freescale ColdFire UART driver * * (C) Copyright 2003-2007, Greg Ungerer <gerg@uclinux.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ /****************************************************************************/ diff --git a/drivers/tty/serial/men_z135_uart.c b/drivers/tty/serial/men_z135_uart.c index e72ea61..ef89534 100644 --- a/drivers/tty/serial/men_z135_uart.c +++ b/drivers/tty/serial/men_z135_uart.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * MEN 16z135 High Speed UART * * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) * Author: Johannes Thumshirn <johannes.thumshirn@men.de> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; version 2 of the License. */ #define pr_fmt(fmt) KBUILD_MODNAME ":" fmt diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index 07c0f98..daafe60 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -1,19 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Based on meson_uart.c, by AMLOGIC, INC. * * Copyright (C) 2014 Carlo Caione <carlo@caione.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ +#if defined(CONFIG_SERIAL_MESON_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) +#define SUPPORT_SYSRQ +#endif + #include <linux/clk.h> #include <linux/console.h> #include <linux/delay.h> @@ -183,12 +178,12 @@ static void meson_receive_chars(struct uart_port *port) { struct tty_port *tport = &port->state->port; char flag; - u32 status, ch, mode; + u32 ostatus, status, ch, mode; do { flag = TTY_NORMAL; port->icount.rx++; - status = readl(port->membase + AML_UART_STATUS); + ostatus = status = readl(port->membase + AML_UART_STATUS); if (status & AML_UART_ERR) { if (status & AML_UART_TX_FIFO_WERR) @@ -216,6 +211,16 @@ static void meson_receive_chars(struct uart_port *port) ch = readl(port->membase + AML_UART_RFIFO); ch &= 0xff; + if ((ostatus & AML_UART_FRAME_ERR) && (ch == 0)) { + port->icount.brk++; + flag = TTY_BREAK; + if (uart_handle_break(port)) + continue; + } + + if (uart_handle_sysrq_char(port, ch)) + continue; + if ((status & port->ignore_status_mask) == 0) tty_insert_flip_char(tport, ch, flag); @@ -362,7 +367,7 @@ static void meson_uart_set_termios(struct uart_port *port, writel(val, port->membase + AML_UART_CONTROL); - baud = uart_get_baud_rate(port, termios, old, 9600, 4000000); + baud = uart_get_baud_rate(port, termios, old, 50, 4000000); meson_uart_change_speed(port, baud); port->read_status_mask = AML_UART_TX_FIFO_WERR; diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c index 791c4c7..3a75ee0 100644 --- a/drivers/tty/serial/mpc52xx_uart.c +++ b/drivers/tty/serial/mpc52xx_uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for the PSC of the Freescale MPC52xx PSCs configured as UARTs. * @@ -23,10 +24,6 @@ * Grant Likely <grant.likely@secretlab.ca> * Copyright (C) 2004-2006 Sylvain Munaut <tnt@246tNt.com> * Copyright (C) 2003 MontaVista, Software, Inc. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. */ #undef DEBUG diff --git a/drivers/tty/serial/mps2-uart.c b/drivers/tty/serial/mps2-uart.c index 492ec4b..9f8f637 100644 --- a/drivers/tty/serial/mps2-uart.c +++ b/drivers/tty/serial/mps2-uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * MPS2 UART driver * @@ -5,10 +6,6 @@ * * Author: Vladimir Murzin <vladimir.murzin@arm.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * TODO: support for SysRq */ diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c index 67ffecc..1f60d6f 100644 --- a/drivers/tty/serial/mpsc.c +++ b/drivers/tty/serial/mpsc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Generic driver for the MPSC (UART mode) on Marvell parts (e.g., GT64240, * GT64260, MV64340, MV64360, GT96100, ... ). @@ -10,10 +11,7 @@ * taken from PPCBoot (now U-Boot). Also based on drivers/serial/8250.c * by Russell King. * - * 2004 (c) MontaVista, Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. + * 2004 (c) MontaVista, Software, Inc. */ /* * The MPSC interface is much like a typical network controller's interface. diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c index 1db79ee..ee96cf0 100644 --- a/drivers/tty/serial/msm_serial.c +++ b/drivers/tty/serial/msm_serial.c @@ -1,18 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for msm7k serial device and console * * Copyright (C) 2007 Google, Inc. * Author: Robert Love <rlove@google.com> * Copyright (c) 2011, Code Aurora Forum. All rights reserved. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #if defined(CONFIG_SERIAL_MSM_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c index 2bff69e..3b74369 100644 --- a/drivers/tty/serial/mux.c +++ b/drivers/tty/serial/mux.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* ** mux.c: ** serial driver for the Mux console found in some PA-RISC servers. @@ -5,11 +6,6 @@ ** (c) Copyright 2002 Ryan Bradetich ** (c) Copyright 2002 Hewlett-Packard Company ** -** This program is free software; you can redistribute it and/or modify -** it under the terms of the GNU General Public License as published by -** the Free Software Foundation; either version 2 of the License, or -** (at your option) any later version. -** ** This Driver currently only supports the console (port 0) on the MUX. ** Additional work will be needed on this driver to enable the full ** functionality of the MUX. @@ -576,8 +572,7 @@ static int __init mux_init(void) if(port_cnt > 0) { /* Start the Mux timer */ - init_timer(&mux_timer); - mux_timer.function = mux_poll; + setup_timer(&mux_timer, mux_poll, 0UL); mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY); #ifdef CONFIG_SERIAL_MUX_CONSOLE diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c index 45b57c2..a100e98 100644 --- a/drivers/tty/serial/mvebu-uart.c +++ b/drivers/tty/serial/mvebu-uart.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * *************************************************************************** * Marvell Armada-3700 Serial Driver * Author: Wilson Ding <dingwei@marvell.com> * Copyright (C) 2015 Marvell International Ltd. * *************************************************************************** -* This program is free software: you can redistribute it and/or modify it -* under the terms of the GNU General Public License as published by the Free -* Software Foundation, either version 2 of the License, or any later version. -* -* This program is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU General Public License for more details. -* -* You should have received a copy of the GNU General Public License -* along with this program. If not, see <http://www.gnu.org/licenses/>. -* *************************************************************************** */ #include <linux/clk.h> @@ -38,46 +27,40 @@ #include <linux/tty_flip.h> /* Register Map */ -#define UART_RBR 0x00 -#define RBR_BRK_DET BIT(15) -#define RBR_FRM_ERR_DET BIT(14) -#define RBR_PAR_ERR_DET BIT(13) -#define RBR_OVR_ERR_DET BIT(12) +#define UART_STD_RBR 0x00 +#define UART_EXT_RBR 0x18 -#define UART_TSH 0x04 +#define UART_STD_TSH 0x04 +#define UART_EXT_TSH 0x1C -#define UART_CTRL 0x08 +#define UART_STD_CTRL1 0x08 +#define UART_EXT_CTRL1 0x04 #define CTRL_SOFT_RST BIT(31) #define CTRL_TXFIFO_RST BIT(15) #define CTRL_RXFIFO_RST BIT(14) -#define CTRL_ST_MIRR_EN BIT(13) -#define CTRL_LPBK_EN BIT(12) #define CTRL_SND_BRK_SEQ BIT(11) -#define CTRL_PAR_EN BIT(10) -#define CTRL_TWO_STOP BIT(9) -#define CTRL_TX_HFL_INT BIT(8) -#define CTRL_RX_HFL_INT BIT(7) -#define CTRL_TX_EMP_INT BIT(6) -#define CTRL_TX_RDY_INT BIT(5) -#define CTRL_RX_RDY_INT BIT(4) #define CTRL_BRK_DET_INT BIT(3) #define CTRL_FRM_ERR_INT BIT(2) #define CTRL_PAR_ERR_INT BIT(1) #define CTRL_OVR_ERR_INT BIT(0) -#define CTRL_RX_INT (CTRL_RX_RDY_INT | CTRL_BRK_DET_INT |\ - CTRL_FRM_ERR_INT | CTRL_PAR_ERR_INT | CTRL_OVR_ERR_INT) +#define CTRL_BRK_INT (CTRL_BRK_DET_INT | CTRL_FRM_ERR_INT | \ + CTRL_PAR_ERR_INT | CTRL_OVR_ERR_INT) + +#define UART_STD_CTRL2 UART_STD_CTRL1 +#define UART_EXT_CTRL2 0x20 +#define CTRL_STD_TX_RDY_INT BIT(5) +#define CTRL_EXT_TX_RDY_INT BIT(6) +#define CTRL_STD_RX_RDY_INT BIT(4) +#define CTRL_EXT_RX_RDY_INT BIT(5) -#define UART_STAT 0x0c +#define UART_STAT 0x0C #define STAT_TX_FIFO_EMP BIT(13) -#define STAT_RX_FIFO_EMP BIT(12) #define STAT_TX_FIFO_FUL BIT(11) -#define STAT_TX_FIFO_HFL BIT(10) -#define STAT_RX_TOGL BIT(9) -#define STAT_RX_FIFO_FUL BIT(8) -#define STAT_RX_FIFO_HFL BIT(7) #define STAT_TX_EMP BIT(6) -#define STAT_TX_RDY BIT(5) -#define STAT_RX_RDY BIT(4) +#define STAT_STD_TX_RDY BIT(5) +#define STAT_EXT_TX_RDY BIT(15) +#define STAT_STD_RX_RDY BIT(4) +#define STAT_EXT_RX_RDY BIT(14) #define STAT_BRK_DET BIT(3) #define STAT_FRM_ERR BIT(2) #define STAT_PAR_ERR BIT(1) @@ -86,18 +69,73 @@ | STAT_PAR_ERR | STAT_OVR_ERR) #define UART_BRDV 0x10 +#define BRDV_BAUD_MASK 0x3FF -#define MVEBU_NR_UARTS 1 +#define MVEBU_NR_UARTS 2 #define MVEBU_UART_TYPE "mvebu-uart" +#define DRIVER_NAME "mvebu_serial" + +enum { + /* Either there is only one summed IRQ... */ + UART_IRQ_SUM = 0, + /* ...or there are two separate IRQ for RX and TX */ + UART_RX_IRQ = 0, + UART_TX_IRQ, + UART_IRQ_COUNT +}; -static struct uart_port mvebu_uart_ports[MVEBU_NR_UARTS]; +/* Diverging register offsets */ +struct uart_regs_layout { + unsigned int rbr; + unsigned int tsh; + unsigned int ctrl; + unsigned int intr; +}; + +/* Diverging flags */ +struct uart_flags { + unsigned int ctrl_tx_rdy_int; + unsigned int ctrl_rx_rdy_int; + unsigned int stat_tx_rdy; + unsigned int stat_rx_rdy; +}; + +/* Driver data, a structure for each UART port */ +struct mvebu_uart_driver_data { + bool is_ext; + struct uart_regs_layout regs; + struct uart_flags flags; +}; -struct mvebu_uart_data { +/* MVEBU UART driver structure */ +struct mvebu_uart { struct uart_port *port; - struct clk *clk; + struct clk *clk; + int irq[UART_IRQ_COUNT]; + unsigned char __iomem *nb; + struct mvebu_uart_driver_data *data; }; +static struct mvebu_uart *to_mvuart(struct uart_port *port) +{ + return (struct mvebu_uart *)port->private_data; +} + +#define IS_EXTENDED(port) (to_mvuart(port)->data->is_ext) + +#define UART_RBR(port) (to_mvuart(port)->data->regs.rbr) +#define UART_TSH(port) (to_mvuart(port)->data->regs.tsh) +#define UART_CTRL(port) (to_mvuart(port)->data->regs.ctrl) +#define UART_INTR(port) (to_mvuart(port)->data->regs.intr) + +#define CTRL_TX_RDY_INT(port) (to_mvuart(port)->data->flags.ctrl_tx_rdy_int) +#define CTRL_RX_RDY_INT(port) (to_mvuart(port)->data->flags.ctrl_rx_rdy_int) +#define STAT_TX_RDY(port) (to_mvuart(port)->data->flags.stat_tx_rdy) +#define STAT_RX_RDY(port) (to_mvuart(port)->data->flags.stat_rx_rdy) + +static struct uart_port mvebu_uart_ports[MVEBU_NR_UARTS]; + /* Core UART Driver Operations */ static unsigned int mvebu_uart_tx_empty(struct uart_port *port) { @@ -127,26 +165,39 @@ static void mvebu_uart_set_mctrl(struct uart_port *port, static void mvebu_uart_stop_tx(struct uart_port *port) { - unsigned int ctl = readl(port->membase + UART_CTRL); + unsigned int ctl = readl(port->membase + UART_INTR(port)); - ctl &= ~CTRL_TX_RDY_INT; - writel(ctl, port->membase + UART_CTRL); + ctl &= ~CTRL_TX_RDY_INT(port); + writel(ctl, port->membase + UART_INTR(port)); } static void mvebu_uart_start_tx(struct uart_port *port) { - unsigned int ctl = readl(port->membase + UART_CTRL); + unsigned int ctl; + struct circ_buf *xmit = &port->state->xmit; + + if (IS_EXTENDED(port) && !uart_circ_empty(xmit)) { + writel(xmit->buf[xmit->tail], port->membase + UART_TSH(port)); + xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); + port->icount.tx++; + } - ctl |= CTRL_TX_RDY_INT; - writel(ctl, port->membase + UART_CTRL); + ctl = readl(port->membase + UART_INTR(port)); + ctl |= CTRL_TX_RDY_INT(port); + writel(ctl, port->membase + UART_INTR(port)); } static void mvebu_uart_stop_rx(struct uart_port *port) { - unsigned int ctl = readl(port->membase + UART_CTRL); + unsigned int ctl; + + ctl = readl(port->membase + UART_CTRL(port)); + ctl &= ~CTRL_BRK_INT; + writel(ctl, port->membase + UART_CTRL(port)); - ctl &= ~CTRL_RX_INT; - writel(ctl, port->membase + UART_CTRL); + ctl = readl(port->membase + UART_INTR(port)); + ctl &= ~CTRL_RX_RDY_INT(port); + writel(ctl, port->membase + UART_INTR(port)); } static void mvebu_uart_break_ctl(struct uart_port *port, int brk) @@ -155,12 +206,12 @@ static void mvebu_uart_break_ctl(struct uart_port *port, int brk) unsigned long flags; spin_lock_irqsave(&port->lock, flags); - ctl = readl(port->membase + UART_CTRL); + ctl = readl(port->membase + UART_CTRL(port)); if (brk == -1) ctl |= CTRL_SND_BRK_SEQ; else ctl &= ~CTRL_SND_BRK_SEQ; - writel(ctl, port->membase + UART_CTRL); + writel(ctl, port->membase + UART_CTRL(port)); spin_unlock_irqrestore(&port->lock, flags); } @@ -171,8 +222,8 @@ static void mvebu_uart_rx_chars(struct uart_port *port, unsigned int status) char flag = 0; do { - if (status & STAT_RX_RDY) { - ch = readl(port->membase + UART_RBR); + if (status & STAT_RX_RDY(port)) { + ch = readl(port->membase + UART_RBR(port)); ch &= 0xff; flag = TTY_NORMAL; port->icount.rx++; @@ -198,7 +249,7 @@ static void mvebu_uart_rx_chars(struct uart_port *port, unsigned int status) goto ignore_char; if (status & port->ignore_status_mask & STAT_PAR_ERR) - status &= ~STAT_RX_RDY; + status &= ~STAT_RX_RDY(port); status &= port->read_status_mask; @@ -207,7 +258,7 @@ static void mvebu_uart_rx_chars(struct uart_port *port, unsigned int status) status &= ~port->ignore_status_mask; - if (status & STAT_RX_RDY) + if (status & STAT_RX_RDY(port)) tty_insert_flip_char(tport, ch, flag); if (status & STAT_BRK_DET) @@ -221,7 +272,7 @@ static void mvebu_uart_rx_chars(struct uart_port *port, unsigned int status) ignore_char: status = readl(port->membase + UART_STAT); - } while (status & (STAT_RX_RDY | STAT_BRK_DET)); + } while (status & (STAT_RX_RDY(port) | STAT_BRK_DET)); tty_flip_buffer_push(tport); } @@ -233,7 +284,7 @@ static void mvebu_uart_tx_chars(struct uart_port *port, unsigned int status) unsigned int st; if (port->x_char) { - writel(port->x_char, port->membase + UART_TSH); + writel(port->x_char, port->membase + UART_TSH(port)); port->icount.tx++; port->x_char = 0; return; @@ -245,7 +296,7 @@ static void mvebu_uart_tx_chars(struct uart_port *port, unsigned int status) } for (count = 0; count < port->fifosize; count++) { - writel(xmit->buf[xmit->tail], port->membase + UART_TSH); + writel(xmit->buf[xmit->tail], port->membase + UART_TSH(port)); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); port->icount.tx++; @@ -269,10 +320,34 @@ static irqreturn_t mvebu_uart_isr(int irq, void *dev_id) struct uart_port *port = (struct uart_port *)dev_id; unsigned int st = readl(port->membase + UART_STAT); - if (st & (STAT_RX_RDY | STAT_OVR_ERR | STAT_FRM_ERR | STAT_BRK_DET)) + if (st & (STAT_RX_RDY(port) | STAT_OVR_ERR | STAT_FRM_ERR | + STAT_BRK_DET)) mvebu_uart_rx_chars(port, st); - if (st & STAT_TX_RDY) + if (st & STAT_TX_RDY(port)) + mvebu_uart_tx_chars(port, st); + + return IRQ_HANDLED; +} + +static irqreturn_t mvebu_uart_rx_isr(int irq, void *dev_id) +{ + struct uart_port *port = (struct uart_port *)dev_id; + unsigned int st = readl(port->membase + UART_STAT); + + if (st & (STAT_RX_RDY(port) | STAT_OVR_ERR | STAT_FRM_ERR | + STAT_BRK_DET)) + mvebu_uart_rx_chars(port, st); + + return IRQ_HANDLED; +} + +static irqreturn_t mvebu_uart_tx_isr(int irq, void *dev_id) +{ + struct uart_port *port = (struct uart_port *)dev_id; + unsigned int st = readl(port->membase + UART_STAT); + + if (st & STAT_TX_RDY(port)) mvebu_uart_tx_chars(port, st); return IRQ_HANDLED; @@ -280,18 +355,57 @@ static irqreturn_t mvebu_uart_isr(int irq, void *dev_id) static int mvebu_uart_startup(struct uart_port *port) { + struct mvebu_uart *mvuart = to_mvuart(port); + unsigned int ctl; int ret; writel(CTRL_TXFIFO_RST | CTRL_RXFIFO_RST, - port->membase + UART_CTRL); + port->membase + UART_CTRL(port)); udelay(1); - writel(CTRL_RX_INT, port->membase + UART_CTRL); - ret = request_irq(port->irq, mvebu_uart_isr, port->irqflags, "serial", - port); - if (ret) { - dev_err(port->dev, "failed to request irq\n"); - return ret; + /* Clear the error bits of state register before IRQ request */ + ret = readl(port->membase + UART_STAT); + ret |= STAT_BRK_ERR; + writel(ret, port->membase + UART_STAT); + + writel(CTRL_BRK_INT, port->membase + UART_CTRL(port)); + + ctl = readl(port->membase + UART_INTR(port)); + ctl |= CTRL_RX_RDY_INT(port); + writel(ctl, port->membase + UART_INTR(port)); + + if (!mvuart->irq[UART_TX_IRQ]) { + /* Old bindings with just one interrupt (UART0 only) */ + ret = devm_request_irq(port->dev, mvuart->irq[UART_IRQ_SUM], + mvebu_uart_isr, port->irqflags, + dev_name(port->dev), port); + if (ret) { + dev_err(port->dev, "unable to request IRQ %d\n", + mvuart->irq[UART_IRQ_SUM]); + return ret; + } + } else { + /* New bindings with an IRQ for RX and TX (both UART) */ + ret = devm_request_irq(port->dev, mvuart->irq[UART_RX_IRQ], + mvebu_uart_rx_isr, port->irqflags, + dev_name(port->dev), port); + if (ret) { + dev_err(port->dev, "unable to request IRQ %d\n", + mvuart->irq[UART_RX_IRQ]); + return ret; + } + + ret = devm_request_irq(port->dev, mvuart->irq[UART_TX_IRQ], + mvebu_uart_tx_isr, port->irqflags, + dev_name(port->dev), + port); + if (ret) { + dev_err(port->dev, "unable to request IRQ %d\n", + mvuart->irq[UART_TX_IRQ]); + devm_free_irq(port->dev, mvuart->irq[UART_RX_IRQ], + port); + return ret; + } } return 0; @@ -299,9 +413,41 @@ static int mvebu_uart_startup(struct uart_port *port) static void mvebu_uart_shutdown(struct uart_port *port) { - writel(0, port->membase + UART_CTRL); + struct mvebu_uart *mvuart = to_mvuart(port); + + writel(0, port->membase + UART_INTR(port)); + + if (!mvuart->irq[UART_TX_IRQ]) { + devm_free_irq(port->dev, mvuart->irq[UART_IRQ_SUM], port); + } else { + devm_free_irq(port->dev, mvuart->irq[UART_RX_IRQ], port); + devm_free_irq(port->dev, mvuart->irq[UART_TX_IRQ], port); + } +} + +static int mvebu_uart_baud_rate_set(struct uart_port *port, unsigned int baud) +{ + struct mvebu_uart *mvuart = to_mvuart(port); + unsigned int baud_rate_div; + u32 brdv; + + if (IS_ERR(mvuart->clk)) + return -PTR_ERR(mvuart->clk); + + /* + * The UART clock is divided by the value of the divisor to generate + * UCLK_OUT clock, which is 16 times faster than the baudrate. + * This prescaler can achieve all standard baudrates until 230400. + * Higher baudrates could be achieved for the extended UART by using the + * programmable oversampling stack (also called fractional divisor). + */ + baud_rate_div = DIV_ROUND_UP(port->uartclk, baud * 16); + brdv = readl(port->membase + UART_BRDV); + brdv &= ~BRDV_BAUD_MASK; + brdv |= baud_rate_div; + writel(brdv, port->membase + UART_BRDV); - free_irq(port->irq, port); + return 0; } static void mvebu_uart_set_termios(struct uart_port *port, @@ -313,8 +459,8 @@ static void mvebu_uart_set_termios(struct uart_port *port, spin_lock_irqsave(&port->lock, flags); - port->read_status_mask = STAT_RX_RDY | STAT_OVR_ERR | - STAT_TX_RDY | STAT_TX_FIFO_FUL; + port->read_status_mask = STAT_RX_RDY(port) | STAT_OVR_ERR | + STAT_TX_RDY(port) | STAT_TX_FIFO_FUL; if (termios->c_iflag & INPCK) port->read_status_mask |= STAT_FRM_ERR | STAT_PAR_ERR; @@ -325,13 +471,32 @@ static void mvebu_uart_set_termios(struct uart_port *port, STAT_FRM_ERR | STAT_PAR_ERR | STAT_OVR_ERR; if ((termios->c_cflag & CREAD) == 0) - port->ignore_status_mask |= STAT_RX_RDY | STAT_BRK_ERR; - - if (old) - tty_termios_copy_hw(termios, old); + port->ignore_status_mask |= STAT_RX_RDY(port) | STAT_BRK_ERR; + + /* + * Maximum achievable frequency with simple baudrate divisor is 230400. + * Since the error per bit frame would be of more than 15%, achieving + * higher frequencies would require to implement the fractional divisor + * feature. + */ + baud = uart_get_baud_rate(port, termios, old, 0, 230400); + if (mvebu_uart_baud_rate_set(port, baud)) { + /* No clock available, baudrate cannot be changed */ + if (old) + baud = uart_get_baud_rate(port, old, NULL, 0, 230400); + } else { + tty_termios_encode_baud_rate(termios, baud, baud); + uart_update_timeout(port, termios->c_cflag, baud); + } - baud = uart_get_baud_rate(port, termios, old, 0, 460800); - uart_update_timeout(port, termios->c_cflag, baud); + /* Only the following flag changes are supported */ + if (old) { + termios->c_iflag &= INPCK | IGNPAR; + termios->c_iflag |= old->c_iflag & ~(INPCK | IGNPAR); + termios->c_cflag &= CREAD | CBAUD; + termios->c_cflag |= old->c_cflag & ~(CREAD | CBAUD); + termios->c_lflag = old->c_lflag; + } spin_unlock_irqrestore(&port->lock, flags); } @@ -356,10 +521,10 @@ static int mvebu_uart_get_poll_char(struct uart_port *port) { unsigned int st = readl(port->membase + UART_STAT); - if (!(st & STAT_RX_RDY)) + if (!(st & STAT_RX_RDY(port))) return NO_POLL_CHAR; - return readl(port->membase + UART_RBR); + return readl(port->membase + UART_RBR(port)); } static void mvebu_uart_put_poll_char(struct uart_port *port, unsigned char c) @@ -375,7 +540,7 @@ static void mvebu_uart_put_poll_char(struct uart_port *port, unsigned char c) udelay(1); } - writel(c, port->membase + UART_TSH); + writel(c, port->membase + UART_TSH(port)); } #endif @@ -413,7 +578,8 @@ static void mvebu_uart_putc(struct uart_port *port, int c) break; } - writel(c, port->membase + UART_TSH); + /* At early stage, DT is not parsed yet, only use UART0 */ + writel(c, port->membase + UART_STD_TSH); for (;;) { st = readl(port->membase + UART_STAT); @@ -458,7 +624,7 @@ static void wait_for_xmitr(struct uart_port *port) static void mvebu_uart_console_putchar(struct uart_port *port, int ch) { wait_for_xmitr(port); - writel(ch, port->membase + UART_TSH); + writel(ch, port->membase + UART_TSH(port)); } static void mvebu_uart_console_write(struct console *co, const char *s, @@ -466,7 +632,7 @@ static void mvebu_uart_console_write(struct console *co, const char *s, { struct uart_port *port = &mvebu_uart_ports[co->index]; unsigned long flags; - unsigned int ier; + unsigned int ier, intr, ctl; int locked = 1; if (oops_in_progress) @@ -474,16 +640,23 @@ static void mvebu_uart_console_write(struct console *co, const char *s, else spin_lock_irqsave(&port->lock, flags); - ier = readl(port->membase + UART_CTRL) & - (CTRL_RX_INT | CTRL_TX_RDY_INT); - writel(0, port->membase + UART_CTRL); + ier = readl(port->membase + UART_CTRL(port)) & CTRL_BRK_INT; + intr = readl(port->membase + UART_INTR(port)) & + (CTRL_RX_RDY_INT(port) | CTRL_TX_RDY_INT(port)); + writel(0, port->membase + UART_CTRL(port)); + writel(0, port->membase + UART_INTR(port)); uart_console_write(port, s, count, mvebu_uart_console_putchar); wait_for_xmitr(port); if (ier) - writel(ier, port->membase + UART_CTRL); + writel(ier, port->membase + UART_CTRL(port)); + + if (intr) { + ctl = intr | readl(port->membase + UART_INTR(port)); + writel(ctl, port->membase + UART_INTR(port)); + } if (locked) spin_unlock_irqrestore(&port->lock, flags); @@ -538,7 +711,7 @@ console_initcall(mvebu_uart_console_init); static struct uart_driver mvebu_uart_driver = { .owner = THIS_MODULE, - .driver_name = "mvebu_serial", + .driver_name = DRIVER_NAME, .dev_name = "ttyMV", .nr = MVEBU_NR_UARTS, #ifdef CONFIG_SERIAL_MVEBU_CONSOLE @@ -546,20 +719,39 @@ static struct uart_driver mvebu_uart_driver = { #endif }; +static const struct of_device_id mvebu_uart_of_match[]; + +/* Counter to keep track of each UART port id when not using CONFIG_OF */ +static int uart_num_counter; + static int mvebu_uart_probe(struct platform_device *pdev) { struct resource *reg = platform_get_resource(pdev, IORESOURCE_MEM, 0); - struct resource *irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + const struct of_device_id *match = of_match_device(mvebu_uart_of_match, + &pdev->dev); struct uart_port *port; - struct mvebu_uart_data *data; - int ret; + struct mvebu_uart *mvuart; + int ret, id, irq; + + if (!reg) { + dev_err(&pdev->dev, "no registers defined\n"); + return -EINVAL; + } + + /* Assume that all UART ports have a DT alias or none has */ + id = of_alias_get_id(pdev->dev.of_node, "serial"); + if (!pdev->dev.of_node || id < 0) + pdev->id = uart_num_counter++; + else + pdev->id = id; - if (!reg || !irq) { - dev_err(&pdev->dev, "no registers/irq defined\n"); + if (pdev->id >= MVEBU_NR_UARTS) { + dev_err(&pdev->dev, "cannot have more than %d UART ports\n", + MVEBU_NR_UARTS); return -EINVAL; } - port = &mvebu_uart_ports[0]; + port = &mvebu_uart_ports[pdev->id]; spin_lock_init(&port->lock); @@ -571,9 +763,14 @@ static int mvebu_uart_probe(struct platform_device *pdev) port->fifosize = 32; port->iotype = UPIO_MEM32; port->flags = UPF_FIXED_PORT; - port->line = 0; /* single port: force line number to 0 */ - - port->irq = irq->start; + port->line = pdev->id; + + /* + * IRQ number is not stored in this structure because we may have two of + * them per port (RX and TX). Instead, use the driver UART structure + * array so called ->irq[]. + */ + port->irq = 0; port->irqflags = 0; port->mapbase = reg->start; @@ -581,15 +778,70 @@ static int mvebu_uart_probe(struct platform_device *pdev) if (IS_ERR(port->membase)) return -PTR_ERR(port->membase); - data = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_uart_data), - GFP_KERNEL); - if (!data) + mvuart = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_uart), + GFP_KERNEL); + if (!mvuart) return -ENOMEM; - data->port = port; + /* Get controller data depending on the compatible string */ + mvuart->data = (struct mvebu_uart_driver_data *)match->data; + mvuart->port = port; + + port->private_data = mvuart; + platform_set_drvdata(pdev, mvuart); + + /* Get fixed clock frequency */ + mvuart->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(mvuart->clk)) { + if (PTR_ERR(mvuart->clk) == -EPROBE_DEFER) + return PTR_ERR(mvuart->clk); + + if (IS_EXTENDED(port)) { + dev_err(&pdev->dev, "unable to get UART clock\n"); + return PTR_ERR(mvuart->clk); + } + } else { + if (!clk_prepare_enable(mvuart->clk)) + port->uartclk = clk_get_rate(mvuart->clk); + } + + /* Manage interrupts */ + if (platform_irq_count(pdev) == 1) { + /* Old bindings: no name on the single unamed UART0 IRQ */ + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "unable to get UART IRQ\n"); + return irq; + } + + mvuart->irq[UART_IRQ_SUM] = irq; + } else { + /* + * New bindings: named interrupts (RX, TX) for both UARTS, + * only make use of uart-rx and uart-tx interrupts, do not use + * uart-sum of UART0 port. + */ + irq = platform_get_irq_byname(pdev, "uart-rx"); + if (irq < 0) { + dev_err(&pdev->dev, "unable to get 'uart-rx' IRQ\n"); + return irq; + } + + mvuart->irq[UART_RX_IRQ] = irq; - port->private_data = data; - platform_set_drvdata(pdev, data); + irq = platform_get_irq_byname(pdev, "uart-tx"); + if (irq < 0) { + dev_err(&pdev->dev, "unable to get 'uart-tx' IRQ\n"); + return irq; + } + + mvuart->irq[UART_TX_IRQ] = irq; + } + + /* UART Soft Reset*/ + writel(CTRL_SOFT_RST, port->membase + UART_CTRL(port)); + udelay(1); + writel(0, port->membase + UART_CTRL(port)); ret = uart_add_one_port(&mvebu_uart_driver, port); if (ret) @@ -597,9 +849,40 @@ static int mvebu_uart_probe(struct platform_device *pdev) return 0; } +static struct mvebu_uart_driver_data uart_std_driver_data = { + .is_ext = false, + .regs.rbr = UART_STD_RBR, + .regs.tsh = UART_STD_TSH, + .regs.ctrl = UART_STD_CTRL1, + .regs.intr = UART_STD_CTRL2, + .flags.ctrl_tx_rdy_int = CTRL_STD_TX_RDY_INT, + .flags.ctrl_rx_rdy_int = CTRL_STD_RX_RDY_INT, + .flags.stat_tx_rdy = STAT_STD_TX_RDY, + .flags.stat_rx_rdy = STAT_STD_RX_RDY, +}; + +static struct mvebu_uart_driver_data uart_ext_driver_data = { + .is_ext = true, + .regs.rbr = UART_EXT_RBR, + .regs.tsh = UART_EXT_TSH, + .regs.ctrl = UART_EXT_CTRL1, + .regs.intr = UART_EXT_CTRL2, + .flags.ctrl_tx_rdy_int = CTRL_EXT_TX_RDY_INT, + .flags.ctrl_rx_rdy_int = CTRL_EXT_RX_RDY_INT, + .flags.stat_tx_rdy = STAT_EXT_TX_RDY, + .flags.stat_rx_rdy = STAT_EXT_RX_RDY, +}; + /* Match table for of_platform binding */ static const struct of_device_id mvebu_uart_of_match[] = { - { .compatible = "marvell,armada-3700-uart", }, + { + .compatible = "marvell,armada-3700-uart", + .data = (void *)&uart_std_driver_data, + }, + { + .compatible = "marvell,armada-3700-uart-ext", + .data = (void *)&uart_ext_driver_data, + }, {} }; diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index be94246..efb4fd3 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Application UART driver for: * Freescale STMP37XX/STMP378X @@ -9,10 +10,6 @@ * Provide Alphascale ASM9260 support. * Copyright 2008-2010 Freescale Semiconductor, Inc. * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: */ #if defined(CONFIG_SERIAL_MXS_AUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/netx-serial.c b/drivers/tty/serial/netx-serial.c index 207a0a0..b355686 100644 --- a/drivers/tty/serial/netx-serial.c +++ b/drivers/tty/serial/netx-serial.c @@ -1,18 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #if defined(CONFIG_SERIAL_NETX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 7754053..53d59e9 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for OMAP-UART controller. * Based on drivers/serial/8250.c @@ -8,11 +9,6 @@ * Govindraj R <govindraj.raja@ti.com> * Thara Gopinath <thara@ti.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * * Note: This driver is made separate from 8250 driver as we cannot * over load 8250 driver with omap platform specific configuration for * features like DMA, it makes easier to implement features like DMA and @@ -610,7 +606,7 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id) default: break; } - } while (!(iir & UART_IIR_NO_INT) && max_count--); + } while (max_count--); spin_unlock(&up->port.lock); @@ -693,7 +689,7 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl) if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS)) up->efr |= UART_EFR_RTS; else - up->efr &= UART_EFR_RTS; + up->efr &= ~UART_EFR_RTS; serial_out(up, UART_EFR, up->efr); serial_out(up, UART_LCR, lcr); @@ -1606,7 +1602,6 @@ static int serial_omap_probe_rs485(struct uart_omap_port *up, struct device_node *np) { struct serial_rs485 *rs485conf = &up->port.rs485; - u32 rs485_delay[2]; enum of_gpio_flags flags; int ret; @@ -1637,17 +1632,7 @@ static int serial_omap_probe_rs485(struct uart_omap_port *up, up->rts_gpio = -EINVAL; } - if (of_property_read_u32_array(np, "rs485-rts-delay", - rs485_delay, 2) == 0) { - rs485conf->delay_rts_before_send = rs485_delay[0]; - rs485conf->delay_rts_after_send = rs485_delay[1]; - } - - if (of_property_read_bool(np, "rs485-rx-during-tx")) - rs485conf->flags |= SER_RS485_RX_DURING_TX; - - if (of_property_read_bool(np, "linux,rs485-enabled-at-boot-time")) - rs485conf->flags |= SER_RS485_ENABLED; + of_get_rs485_mode(np, rs485conf); return 0; } diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c index b9c85936..29a6dc6 100644 --- a/drivers/tty/serial/owl-uart.c +++ b/drivers/tty/serial/owl-uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Actions Semi Owl family serial console * @@ -5,19 +6,6 @@ * Author: Actions Semi, Inc. * * Copyright (c) 2016-2017 Andreas Färber - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/clk.h> diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index d9123f9..760d5dd 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -1,18 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* *Copyright (C) 2011 LAPIS Semiconductor Co., Ltd. - * - *This program is free software; you can redistribute it and/or modify - *it under the terms of the GNU General Public License as published by - *the Free Software Foundation; version 2 of the License. - * - *This program is distributed in the hope that it will be useful, - *but WITHOUT ANY WARRANTY; without even the implied warranty of - *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - *GNU General Public License for more details. - * - *You should have received a copy of the GNU General Public License - *along with this program; if not, write to the Free Software - *Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ #if defined(CONFIG_SERIAL_PCH_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) #define SUPPORT_SYSRQ diff --git a/drivers/tty/serial/pic32_uart.c b/drivers/tty/serial/pic32_uart.c index 00a33eb..fd80d99 100644 --- a/drivers/tty/serial/pic32_uart.c +++ b/drivers/tty/serial/pic32_uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PIC32 Integrated Serial Driver. * @@ -5,8 +6,6 @@ * * Authors: * Sorin-Andrei Pistirica <andrei.pistirica@microchip.com> - * - * Licensed under GPLv2 or later. */ #include <linux/kernel.h> diff --git a/drivers/tty/serial/pic32_uart.h b/drivers/tty/serial/pic32_uart.h index ec379da..2f2b569 100644 --- a/drivers/tty/serial/pic32_uart.h +++ b/drivers/tty/serial/pic32_uart.h @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PIC32 Integrated Serial Driver. * @@ -5,8 +6,6 @@ * * Authors: * Sorin-Andrei Pistirica <andrei.pistirica@microchip.com> - * - * Licensed under GPLv2 or later. */ #ifndef __DT_PIC32_UART_H__ #define __DT_PIC32_UART_H__ diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c index 6ccdd01..3d21790 100644 --- a/drivers/tty/serial/pmac_zilog.c +++ b/drivers/tty/serial/pmac_zilog.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for PowerMac Z85c30 based ESCC cell found in the * "macio" ASICs of various PowerMac models @@ -13,20 +14,6 @@ * and once done, I expect that driver to remain fairly stable in * the long term, unless we change the driver model again... * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * * 2004-08-06 Harald Welte <laforge@gnumonks.org> * - Enable BREAK interrupt * - Add support for sysreq diff --git a/drivers/tty/serial/pnx8xxx_uart.c b/drivers/tty/serial/pnx8xxx_uart.c index dab2668..f881238 100644 --- a/drivers/tty/serial/pnx8xxx_uart.c +++ b/drivers/tty/serial/pnx8xxx_uart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * UART driver for PNX8XXX SoCs * @@ -7,11 +8,6 @@ * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * Copyright (C) 2000 Deep Blue Solutions Ltd. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of - * any kind, whether express or implied. - * */ #if defined(CONFIG_SERIAL_PNX8XXX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -666,9 +662,8 @@ static void __init pnx8xxx_init_ports(void) first = 0; for (i = 0; i < NR_PORTS; i++) { - init_timer(&pnx8xxx_ports[i].timer); - pnx8xxx_ports[i].timer.function = pnx8xxx_timeout; - pnx8xxx_ports[i].timer.data = (unsigned long)&pnx8xxx_ports[i]; + setup_timer(&pnx8xxx_ports[i].timer, pnx8xxx_timeout, + (unsigned long)&pnx8xxx_ports[i]); pnx8xxx_ports[i].port.ops = &pnx8xxx_pops; } } diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c index 905631d..baf5529 100644 --- a/drivers/tty/serial/pxa.c +++ b/drivers/tty/serial/pxa.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Based on drivers/serial/8250.c by Russell King. * @@ -5,11 +6,6 @@ * Created: Feb 20, 2003 * Copyright: (C) 2003 Monta Vista Software, Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * * Note 1: This driver is made separate from the already too overloaded * 8250.c because it needs some kirks of its own and that'll make it * easier to add DMA support. diff --git a/drivers/tty/serial/rp2.c b/drivers/tty/serial/rp2.c index 056f91b..520b43b 100644 --- a/drivers/tty/serial/rp2.c +++ b/drivers/tty/serial/rp2.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for Comtrol RocketPort EXPRESS/INFINITY cards * @@ -10,10 +11,6 @@ * * rocketport_infinity_express-linux-1.20.tar.gz * Copyright (C) 2004-2011 Comtrol, Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. */ #include <linux/bitops.h> diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c index fd3d132..4e3f169 100644 --- a/drivers/tty/serial/sa1100.c +++ b/drivers/tty/serial/sa1100.c @@ -1,23 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for SA11x0 serial ports * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * * Copyright (C) 2000 Deep Blue Solutions Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #if defined(CONFIG_SERIAL_SA1100_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -640,9 +627,8 @@ static void __init sa1100_init_ports(void) sa1100_ports[i].port.fifosize = 8; sa1100_ports[i].port.line = i; sa1100_ports[i].port.iotype = UPIO_MEM; - init_timer(&sa1100_ports[i].timer); - sa1100_ports[i].timer.function = sa1100_timeout; - sa1100_ports[i].timer.data = (unsigned long)&sa1100_ports[i]; + setup_timer(&sa1100_ports[i].timer, sa1100_timeout, + (unsigned long)&sa1100_ports[i]); } /* diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 8aca18c..f9fecc5 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver core for Samsung SoC onboard UARTs. * * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics * http://armlinux.simtec.co.uk/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ /* Hote on 2410 error handling diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h index 965199b..f930221 100644 --- a/drivers/tty/serial/samsung.h +++ b/drivers/tty/serial/samsung.h @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #ifndef __SAMSUNG_H #define __SAMSUNG_H @@ -6,10 +7,6 @@ * * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics * http://armlinux.simtec.co.uk/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/dmaengine.h> diff --git a/drivers/tty/serial/sb1250-duart.c b/drivers/tty/serial/sb1250-duart.c index 041625c..329aced 100644 --- a/drivers/tty/serial/sb1250-duart.c +++ b/drivers/tty/serial/sb1250-duart.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Support for the asynchronous serial interface (DUART) included * in the BCM1250 and derived System-On-a-Chip (SOC) devices. @@ -9,11 +10,6 @@ * * Copyright (c) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * * References: * * "BCM1250/BCM1125/BCM1125H User Manual", Broadcom Corporation diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index ca54ce0..65792a3 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -1,14 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * SC16IS7xx tty serial driver - Copyright (C) 2014 GridPoint * Author: Jon Ringle <jringle@gridpoint.com> * * Based on max310x.c, by Alexander Shiyan <shc_work@mail.ru> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c index b9c7a90..d6ae308 100644 --- a/drivers/tty/serial/sccnxp.c +++ b/drivers/tty/serial/sccnxp.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * NXP (Philips) SCC+++(SCN+++) serial driver * * Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru> * * Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #if defined(CONFIG_SERIAL_SCCNXP_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -465,9 +461,9 @@ static void sccnxp_handle_events(struct sccnxp_port *s) } while (1); } -static void sccnxp_timer(unsigned long data) +static void sccnxp_timer(struct timer_list *t) { - struct sccnxp_port *s = (struct sccnxp_port *)data; + struct sccnxp_port *s = from_timer(s, t, timer); unsigned long flags; spin_lock_irqsave(&s->lock, flags); @@ -987,8 +983,7 @@ static int sccnxp_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Unable to reguest IRQ %i\n", s->irq); } else { - init_timer(&s->timer); - setup_timer(&s->timer, sccnxp_timer, (unsigned long)s); + timer_setup(&s->timer, sccnxp_timer, 0); mod_timer(&s->timer, jiffies + usecs_to_jiffies(s->pdata.poll_time_us)); return 0; diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c index cf9b736..af2a29c 100644 --- a/drivers/tty/serial/serial-tegra.c +++ b/drivers/tty/serial/serial-tegra.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * serial_tegra.c * @@ -6,18 +7,6 @@ * Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved. * * Author: Laxman Dewangan <ldewangan@nvidia.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/clk.h> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 3a14ccc..854995e 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver core for serial ports * @@ -5,20 +6,6 @@ * * Copyright 1999 ARM Limited * Copyright (C) 2000-2001 Deep Blue Solutions Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/module.h> #include <linux/tty.h> @@ -1482,10 +1469,10 @@ out: static void uart_close(struct tty_struct *tty, struct file *filp) { struct uart_state *state = tty->driver_data; - struct tty_port *port; if (!state) { struct uart_driver *drv = tty->driver->driver_state; + struct tty_port *port; state = drv->state + tty->index; port = &state->port; @@ -1495,7 +1482,6 @@ static void uart_close(struct tty_struct *tty, struct file *filp) return; } - port = &state->port; pr_debug("uart_close(%d) called\n", tty->index); tty_port_close(tty->port, tty, filp); @@ -3026,5 +3012,41 @@ EXPORT_SYMBOL(uart_resume_port); EXPORT_SYMBOL(uart_add_one_port); EXPORT_SYMBOL(uart_remove_one_port); +/** + * of_get_rs485_mode() - Implement parsing rs485 properties + * @np: uart node + * @rs485conf: output parameter + * + * This function implements the device tree binding described in + * Documentation/devicetree/bindings/serial/rs485.txt. + */ +void of_get_rs485_mode(struct device_node *np, struct serial_rs485 *rs485conf) +{ + u32 rs485_delay[2]; + int ret; + + ret = of_property_read_u32_array(np, "rs485-rts-delay", rs485_delay, 2); + if (!ret) { + rs485conf->delay_rts_before_send = rs485_delay[0]; + rs485conf->delay_rts_after_send = rs485_delay[1]; + } else { + rs485conf->delay_rts_before_send = 0; + rs485conf->delay_rts_after_send = 0; + } + + /* + * clear full-duplex and enabled flags to get to a defined state with + * the two following properties. + */ + rs485conf->flags &= ~(SER_RS485_RX_DURING_TX | SER_RS485_ENABLED); + + if (of_property_read_bool(np, "rs485-rx-during-tx")) + rs485conf->flags |= SER_RS485_RX_DURING_TX; + + if (of_property_read_bool(np, "linux,rs485-enabled-at-boot-time")) + rs485conf->flags |= SER_RS485_ENABLED; +} +EXPORT_SYMBOL_GPL(of_get_rs485_mode); + MODULE_DESCRIPTION("Serial driver core"); MODULE_LICENSE("GPL"); diff --git a/drivers/tty/serial/serial_ks8695.c b/drivers/tty/serial/serial_ks8695.c index 57f1523..b461d79 100644 --- a/drivers/tty/serial/serial_ks8695.c +++ b/drivers/tty/serial/serial_ks8695.c @@ -1,15 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for KS8695 serial ports * * Based on drivers/serial/serial_amba.c, by Kam Lee. * * Copyright 2002-2005 Micrel Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ #include <linux/module.h> #include <linux/tty.h> diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c index d2da6aa..1c06325 100644 --- a/drivers/tty/serial/serial_mctrl_gpio.c +++ b/drivers/tty/serial/serial_mctrl_gpio.c @@ -1,17 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Helpers for controlling modem lines via GPIO * * Copyright (C) 2014 Paratronic S.A. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/err.h> diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h index fa000bc..b7d3cca 100644 --- a/drivers/tty/serial/serial_mctrl_gpio.h +++ b/drivers/tty/serial/serial_mctrl_gpio.h @@ -1,18 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Helpers for controlling modem lines via GPIO * * Copyright (C) 2014 Paratronic S.A. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #ifndef __SERIAL_MCTRL_GPIO__ diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c index f80fead..1b4008d 100644 --- a/drivers/tty/serial/serial_txx9.c +++ b/drivers/tty/serial/serial_txx9.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Derived from many drivers using generic_serial interface, * especially serial_tx3912.c by Steven J. Hill and r39xx_serial.c @@ -8,10 +9,6 @@ * Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com) * Copyright (C) 2000-2002 Toshiba Corporation * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Serial driver for TX3927/TX4927/TX4925/TX4938 internal SIO controller */ diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 784dd42..31fcc70 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * SuperH on-chip serial module support. (SCI with no FIFO / with FIFO) * @@ -13,10 +14,6 @@ * Modified to support SecureEdge. David McCullough (2002) * Modified to support SH7300 SCIF. Takashi Kusuda (Jun 2003). * Removed SH7300 support (Jul 2007). - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. */ #if defined(CONFIG_SERIAL_SH_SCI_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) #define SUPPORT_SYSRQ @@ -40,6 +37,7 @@ #include <linux/module.h> #include <linux/mm.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/scatterlist.h> @@ -152,6 +150,7 @@ struct sci_port { int rx_trigger; struct timer_list rx_fifo_timer; int rx_fifo_timeout; + u16 hscif_tot; bool has_rtscts; bool autorts; @@ -1107,8 +1106,14 @@ static ssize_t rx_fifo_timeout_show(struct device *dev, { struct uart_port *port = dev_get_drvdata(dev); struct sci_port *sci = to_sci_port(port); + int v; + + if (port->type == PORT_HSCIF) + v = sci->hscif_tot >> HSSCR_TOT_SHIFT; + else + v = sci->rx_fifo_timeout; - return sprintf(buf, "%d\n", sci->rx_fifo_timeout); + return sprintf(buf, "%d\n", v); } static ssize_t rx_fifo_timeout_store(struct device *dev, @@ -1124,11 +1129,19 @@ static ssize_t rx_fifo_timeout_store(struct device *dev, ret = kstrtol(buf, 0, &r); if (ret) return ret; - sci->rx_fifo_timeout = r; - scif_set_rtrg(port, 1); - if (r > 0) - setup_timer(&sci->rx_fifo_timer, rx_fifo_timer_fn, - (unsigned long)sci); + + if (port->type == PORT_HSCIF) { + if (r < 0 || r > 3) + return -EINVAL; + sci->hscif_tot = r << HSSCR_TOT_SHIFT; + } else { + sci->rx_fifo_timeout = r; + scif_set_rtrg(port, 1); + if (r > 0) + setup_timer(&sci->rx_fifo_timer, rx_fifo_timer_fn, + (unsigned long)sci); + } + return count; } @@ -1210,8 +1223,11 @@ static void sci_rx_dma_release(struct sci_port *s, bool enable_pio) dma_free_coherent(chan->device->dev, s->buf_len_rx * 2, s->rx_buf[0], sg_dma_address(&s->sg_rx[0])); dma_release_channel(chan); - if (enable_pio) + if (enable_pio) { + spin_lock_irqsave(&port->lock, flags); sci_start_rx(port); + spin_unlock_irqrestore(&port->lock, flags); + } } static void sci_dma_rx_complete(void *arg) @@ -1278,8 +1294,11 @@ static void sci_tx_dma_release(struct sci_port *s, bool enable_pio) dma_unmap_single(chan->device->dev, s->tx_dma_addr, UART_XMIT_SIZE, DMA_TO_DEVICE); dma_release_channel(chan); - if (enable_pio) + if (enable_pio) { + spin_lock_irqsave(&port->lock, flags); sci_start_tx(port); + spin_unlock_irqrestore(&port->lock, flags); + } } static void sci_submit_rx(struct sci_port *s) @@ -1491,6 +1510,14 @@ static void sci_request_dma(struct uart_port *port) return; s->cookie_tx = -EINVAL; + + /* + * Don't request a dma channel if no channel was specified + * in the device tree. + */ + if (!of_find_property(port->dev->of_node, "dmas", NULL)) + return; + chan = sci_request_dma_chan(port, DMA_MEM_TO_DEV); dev_dbg(port->dev, "%s: TX: got channel %p\n", __func__, chan); if (chan) { @@ -1980,6 +2007,7 @@ static void sci_enable_ms(struct uart_port *port) static void sci_break_ctl(struct uart_port *port, int break_state) { unsigned short scscr, scsptr; + unsigned long flags; /* check wheter the port has SCSPTR */ if (!sci_getreg(port, SCSPTR)->size) { @@ -1990,6 +2018,7 @@ static void sci_break_ctl(struct uart_port *port, int break_state) return; } + spin_lock_irqsave(&port->lock, flags); scsptr = serial_port_in(port, SCSPTR); scscr = serial_port_in(port, SCSCR); @@ -2003,6 +2032,7 @@ static void sci_break_ctl(struct uart_port *port, int break_state) serial_port_out(port, SCSPTR, scsptr); serial_port_out(port, SCSCR, scscr); + spin_unlock_irqrestore(&port->lock, flags); } static int sci_startup(struct uart_port *port) @@ -2037,9 +2067,13 @@ static void sci_shutdown(struct uart_port *port) spin_lock_irqsave(&port->lock, flags); sci_stop_rx(port); sci_stop_tx(port); - /* Stop RX and TX, disable related interrupts, keep clock source */ + /* + * Stop RX and TX, disable related interrupts, keep clock source + * and HSCIF TOT bits + */ scr = serial_port_in(port, SCSCR); - serial_port_out(port, SCSCR, scr & (SCSCR_CKE1 | SCSCR_CKE0)); + serial_port_out(port, SCSCR, scr & + (SCSCR_CKE1 | SCSCR_CKE0 | s->hscif_tot)); spin_unlock_irqrestore(&port->lock, flags); #ifdef CONFIG_SERIAL_SH_SCI_DMA @@ -2186,7 +2220,7 @@ static void sci_reset(struct uart_port *port) unsigned int status; struct sci_port *s = to_sci_port(port); - serial_port_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */ + serial_port_out(port, SCSCR, s->hscif_tot); /* TE=0, RE=0, CKE1=0 */ reg = sci_getreg(port, SCFCR); if (reg->size) @@ -2227,6 +2261,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios, int min_err = INT_MAX, err; unsigned long max_freq = 0; int best_clk = -1; + unsigned long flags; if ((termios->c_cflag & CSIZE) == CS7) smr_val |= SCSMR_CHR; @@ -2336,6 +2371,8 @@ done: serial_port_out(port, SCCKS, sccks); } + spin_lock_irqsave(&port->lock, flags); + sci_reset(port); uart_update_timeout(port, termios->c_cflag, baud); @@ -2353,10 +2390,7 @@ done: case 27: smr_val |= SCSMR_SRC_27; break; } smr_val |= cks; - dev_dbg(port->dev, - "SCR 0x%x SMR 0x%x BRR %u CKS 0x%x DL %u SRR %u\n", - scr_val, smr_val, brr, sccks, dl, srr); - serial_port_out(port, SCSCR, scr_val); + serial_port_out(port, SCSCR, scr_val | s->hscif_tot); serial_port_out(port, SCSMR, smr_val); serial_port_out(port, SCBRR, brr); if (sci_getreg(port, HSSRR)->size) @@ -2369,8 +2403,7 @@ done: scr_val = s->cfg->scscr & (SCSCR_CKE1 | SCSCR_CKE0); smr_val |= serial_port_in(port, SCSMR) & (SCSMR_CKEDG | SCSMR_SRC_MASK | SCSMR_CKS); - dev_dbg(port->dev, "SCR 0x%x SMR 0x%x\n", scr_val, smr_val); - serial_port_out(port, SCSCR, scr_val); + serial_port_out(port, SCSCR, scr_val | s->hscif_tot); serial_port_out(port, SCSMR, smr_val); } @@ -2406,8 +2439,7 @@ done: scr_val |= SCSCR_RE | SCSCR_TE | (s->cfg->scscr & ~(SCSCR_CKE1 | SCSCR_CKE0)); - dev_dbg(port->dev, "SCSCR 0x%x\n", scr_val); - serial_port_out(port, SCSCR, scr_val); + serial_port_out(port, SCSCR, scr_val | s->hscif_tot); if ((srr + 1 == 5) && (port->type == PORT_SCIFA || port->type == PORT_SCIFB)) { /* @@ -2453,8 +2485,6 @@ done: s->rx_frame = (100 * bits * HZ) / (baud / 10); #ifdef CONFIG_SERIAL_SH_SCI_DMA s->rx_timeout = DIV_ROUND_UP(s->buf_len_rx * 2 * s->rx_frame, 1000); - dev_dbg(port->dev, "DMA Rx t-out %ums, tty t-out %u jiffies\n", - s->rx_timeout * 1000 / HZ, port->timeout); if (s->rx_timeout < msecs_to_jiffies(20)) s->rx_timeout = msecs_to_jiffies(20); #endif @@ -2462,6 +2492,8 @@ done: if ((termios->c_cflag & CREAD) != 0) sci_start_rx(port); + spin_unlock_irqrestore(&port->lock, flags); + sci_port_disable(s); if (UART_ENABLE_MS(port, termios->c_cflag)) @@ -2773,6 +2805,7 @@ static int sci_init_single(struct platform_device *dev, } sci_port->rx_fifo_timeout = 0; + sci_port->hscif_tot = 0; /* SCIFA on sh7723 and sh7724 need a custom sampling rate that doesn't * match the SoC datasheet, this should be investigated. Let platform @@ -2860,7 +2893,7 @@ static void serial_console_write(struct console *co, const char *s, ctrl_temp = SCSCR_RE | SCSCR_TE | (sci_port->cfg->scscr & ~(SCSCR_CKE1 | SCSCR_CKE0)) | (ctrl & (SCSCR_CKE1 | SCSCR_CKE0)); - serial_port_out(port, SCSCR, ctrl_temp); + serial_port_out(port, SCSCR, ctrl_temp | sci_port->hscif_tot); uart_console_write(port, s, count, serial_console_putchar); @@ -2988,7 +3021,8 @@ static int sci_remove(struct platform_device *dev) sysfs_remove_file(&dev->dev.kobj, &dev_attr_rx_fifo_trigger.attr); } - if (port->port.type == PORT_SCIFA || port->port.type == PORT_SCIFB) { + if (port->port.type == PORT_SCIFA || port->port.type == PORT_SCIFB || + port->port.type == PORT_HSCIF) { sysfs_remove_file(&dev->dev.kobj, &dev_attr_rx_fifo_timeout.attr); } @@ -3044,17 +3078,15 @@ static struct plat_sci_port *sci_parse_dt(struct platform_device *pdev, unsigned int *dev_id) { struct device_node *np = pdev->dev.of_node; - const struct of_device_id *match; struct plat_sci_port *p; struct sci_port *sp; + const void *data; int id; if (!IS_ENABLED(CONFIG_OF) || !np) return NULL; - match = of_match_node(of_sci_match, np); - if (!match) - return NULL; + data = of_device_get_match_data(&pdev->dev); p = devm_kzalloc(&pdev->dev, sizeof(struct plat_sci_port), GFP_KERNEL); if (!p) @@ -3070,8 +3102,8 @@ static struct plat_sci_port *sci_parse_dt(struct platform_device *pdev, sp = &sci_ports[id]; *dev_id = id; - p->type = SCI_OF_TYPE(match->data); - p->regtype = SCI_OF_REGTYPE(match->data); + p->type = SCI_OF_TYPE(data); + p->regtype = SCI_OF_REGTYPE(data); sp->has_rtscts = of_property_read_bool(np, "uart-has-rtscts"); @@ -3173,7 +3205,8 @@ static int sci_probe(struct platform_device *dev) if (ret) return ret; } - if (sp->port.type == PORT_SCIFA || sp->port.type == PORT_SCIFB) { + if (sp->port.type == PORT_SCIFA || sp->port.type == PORT_SCIFB || + sp->port.type == PORT_HSCIF) { ret = sysfs_create_file(&dev->dev.kobj, &dev_attr_rx_fifo_timeout.attr); if (ret) { @@ -3244,7 +3277,7 @@ early_platform_init_buffer("earlyprintk", &sci_driver, early_serial_buf, ARRAY_SIZE(early_serial_buf)); #endif #ifdef CONFIG_SERIAL_SH_SCI_EARLYCON -static struct __init plat_sci_port port_cfg; +static struct plat_sci_port port_cfg __initdata; static int __init early_console_setup(struct earlycon_device *device, int type) diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h index 938e23a..a5f792f 100644 --- a/drivers/tty/serial/sh-sci.h +++ b/drivers/tty/serial/sh-sci.h @@ -63,6 +63,9 @@ enum { #define SCSCR_TDRQE BIT(15) /* Tx Data Transfer Request Enable */ #define SCSCR_RDRQE BIT(14) /* Rx Data Transfer Request Enable */ +/* Serial Control Register, HSCIF-only bits */ +#define HSSCR_TOT_SHIFT 14 + /* SCxSR (Serial Status Register) on SCI */ #define SCI_TDRE BIT(7) /* Transmit Data Register Empty */ #define SCI_RDRF BIT(6) /* Receive Data Register Full */ diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c index 684cb8d..9925b00 100644 --- a/drivers/tty/serial/sirfsoc_uart.c +++ b/drivers/tty/serial/sirfsoc_uart.c @@ -1,9 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for CSR SiRFprimaII onboard UARTs. * * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - * - * Licensed under GPLv2 or later. */ #include <linux/module.h> diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h index 43756bd..004ca68 100644 --- a/drivers/tty/serial/sirfsoc_uart.h +++ b/drivers/tty/serial/sirfsoc_uart.h @@ -1,9 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Drivers for CSR SiRFprimaII onboard UARTs. * * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - * - * Licensed under GPLv2 or later. */ #include <linux/bitops.h> #include <linux/log2.h> diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c index 9e0e658..ed78542 100644 --- a/drivers/tty/serial/sn_console.c +++ b/drivers/tty/serial/sn_console.c @@ -8,25 +8,6 @@ * * Copyright (c) 2004-2006 Silicon Graphics, Inc. All Rights Reserved. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * Further, this software is distributed without any warranty that it is - * free of the rightful claim of any third person regarding infringement - * or the like. Any license provided herein, whether implied or - * otherwise, applies only to this software file. Patent licenses, if - * any, provided herein do not apply to combinations of this program with - * other software, or any other product whatsoever. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * * Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane, * Mountain View, CA 94043, or: * @@ -687,9 +668,7 @@ static void __init sn_sal_switch_to_asynch(struct sn_cons_port *port) * timer to poll for input and push data from the console * buffer. */ - init_timer(&port->sc_timer); - port->sc_timer.function = sn_sal_timer_poll; - port->sc_timer.data = (unsigned long)port; + setup_timer(&port->sc_timer, sn_sal_timer_poll, (unsigned long)port); if (IS_RUNNING_ON_SIMULATOR()) port->sc_interrupt_timeout = 6; diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c index e902494..828f114 100644 --- a/drivers/tty/serial/sprd_serial.c +++ b/drivers/tty/serial/sprd_serial.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2012-2015 Spreadtrum Communications Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #if defined(CONFIG_SERIAL_SPRD_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c index b313a79..c763253 100644 --- a/drivers/tty/serial/st-asc.c +++ b/drivers/tty/serial/st-asc.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * st-asc.c: ST Asynchronous serial controller (ASC) driver * * Copyright (C) 2003-2013 STMicroelectronics (R&D) Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ #if defined(CONFIG_SERIAL_ST_ASC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 03a58326..0fa735b 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -1,9 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) Maxime Coquelin 2015 * Copyright (C) STMicroelectronics SA 2017 * Authors: Maxime Coquelin <mcoquelin.stm32@gmail.com> * Gerald Baeza <gerald.baeza@st.com> - * License terms: GNU General Public License (GPL), version 2 * * Inspired by st-asc.c from STMicroelectronics (c) */ @@ -736,11 +736,8 @@ static struct stm32_port *stm32_of_get_stm32_port(struct platform_device *pdev) #ifdef CONFIG_OF static const struct of_device_id stm32_match[] = { - { .compatible = "st,stm32-usart", .data = &stm32f4_info}, { .compatible = "st,stm32-uart", .data = &stm32f4_info}, - { .compatible = "st,stm32f7-usart", .data = &stm32f7_info}, { .compatible = "st,stm32f7-uart", .data = &stm32f7_info}, - { .compatible = "st,stm32h7-usart", .data = &stm32h7_info}, { .compatible = "st,stm32h7-uart", .data = &stm32h7_info}, {}, }; diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h index ffc0c52..8a5ff54 100644 --- a/drivers/tty/serial/stm32-usart.h +++ b/drivers/tty/serial/stm32-usart.h @@ -1,9 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) Maxime Coquelin 2015 * Copyright (C) STMicroelectronics SA 2017 * Authors: Maxime Coquelin <mcoquelin.stm32@gmail.com> * Gerald Baeza <gerald_baeza@yahoo.fr> - * License terms: GNU General Public License (GPL), version 2 */ #define DRIVER_NAME "stm32-usart" diff --git a/drivers/tty/serial/suncore.c b/drivers/tty/serial/suncore.c index 127472b..70a4ea4 100644 --- a/drivers/tty/serial/suncore.c +++ b/drivers/tty/serial/suncore.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* suncore.c * * Common SUN serial routines. Based entirely diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c index 46e4689..63e34d8 100644 --- a/drivers/tty/serial/sunhv.c +++ b/drivers/tty/serial/sunhv.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* sunhv.c: Serial driver for SUN4V hypervisor console. * * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net) diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c index 653a076..b93d022 100644 --- a/drivers/tty/serial/sunsab.c +++ b/drivers/tty/serial/sunsab.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* sunsab.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC. * * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be) diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c index 95d34d7..6cf3e9b 100644 --- a/drivers/tty/serial/sunsu.c +++ b/drivers/tty/serial/sunsu.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * su.c: Small serial driver for keyboard/mouse interface on sparc32/PCI * diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c index 252cea4..bc7af8b 100644 --- a/drivers/tty/serial/sunzilog.c +++ b/drivers/tty/serial/sunzilog.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* sunzilog.c: Zilog serial driver for Sparc systems. * * Driver for Zilog serial chips found on Sun workstations and diff --git a/drivers/tty/serial/tilegx.c b/drivers/tty/serial/tilegx.c index 453215f..f0a3ae5 100644 --- a/drivers/tty/serial/tilegx.c +++ b/drivers/tty/serial/tilegx.c @@ -1,16 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright 2013 Tilera Corporation. All Rights Reserved. * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, version 2. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - * * TILEGx UART driver. */ diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c index 5da7fe4..19d38b5 100644 --- a/drivers/tty/serial/timbuart.c +++ b/drivers/tty/serial/timbuart.c @@ -1,19 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * timbuart.c timberdale FPGA UART driver * Copyright (c) 2009 Intel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Supports: diff --git a/drivers/tty/serial/timbuart.h b/drivers/tty/serial/timbuart.h index 7e56676..fb00b17 100644 --- a/drivers/tty/serial/timbuart.h +++ b/drivers/tty/serial/timbuart.h @@ -1,19 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * timbuart.c timberdale FPGA GPIO driver * Copyright (c) 2009 Intel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Supports: diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index c9b8d70..c47db78 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * uartlite.c: Serial driver for Xilinx uartlite serial controller * * Copyright (C) 2006 Peter Korsgaard <jacmet@sunsite.dk> * Copyright (C) 2007 Secret Lab Technologies Ltd. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. */ #include <linux/platform_device.h> @@ -739,7 +736,7 @@ static int __init ulite_init(void) err_plat: uart_unregister_driver(&ulite_uart_driver); err_uart: - pr_err("registering uartlite driver failed: err=%i", ret); + pr_err("registering uartlite driver failed: err=%i\n", ret); return ret; } diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c index 55b7027..2b6376e 100644 --- a/drivers/tty/serial/ucc_uart.c +++ b/drivers/tty/serial/ucc_uart.c @@ -1,12 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Freescale QUICC Engine UART device driver * * Author: Timur Tabi <timur@freescale.com> * - * Copyright 2007 Freescale Semiconductor, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. + * Copyright 2007 Freescale Semiconductor, Inc. * * This driver adds support for UART devices via Freescale's QUICC Engine * found on some Freescale SOCs. diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c index 439057e..6d106e3 100644 --- a/drivers/tty/serial/vr41xx_siu.c +++ b/drivers/tty/serial/vr41xx_siu.c @@ -1,23 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Driver for NEC VR4100 series Serial Interface Unit. * * Copyright (C) 2004-2008 Yoichi Yuasa <yuasa@linux-mips.org> * * Based on drivers/serial/8250.c, by Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #if defined(CONFIG_SERIAL_VR41XX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c index 435a6f3..3d58e9b 100644 --- a/drivers/tty/serial/vt8500_serial.c +++ b/drivers/tty/serial/vt8500_serial.c @@ -1,18 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> * * Based on msm_serial.c, which is: * Copyright (C) 2007 Google, Inc. * Author: Robert Love <rlove@google.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #if defined(CONFIG_SERIAL_VT8500_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 31a630a..b9b2bc7 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -1,14 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Cadence UART driver (found in Xilinx Zynq) * * 2011 - 2014 (C) Xilinx Inc. * - * This program is free software; you can redistribute it - * and/or modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; - * either version 2 of the License, or (at your option) any - * later version. - * * This driver has originally been pushed by Xilinx using a Zynq-branding. This * still shows in the naming of this file, the kconfig symbols and some symbols * in the code. @@ -1673,7 +1668,7 @@ static void __exit cdns_uart_exit(void) uart_unregister_driver(&cdns_uart_uart_driver); } -module_init(cdns_uart_init); +arch_initcall(cdns_uart_init); module_exit(cdns_uart_exit); MODULE_DESCRIPTION("Driver for Cadence UART"); diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c index d32bd49..b03d3e4 100644 --- a/drivers/tty/serial/zs.c +++ b/drivers/tty/serial/zs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * zs.c: Serial port driver for IOASIC DECstations. * |
