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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:17:40 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:17:40 -0700
commit5b6b54982258c330247957a8d877b9851ac69d53 (patch)
tree567e4b3391e0c6689cf511789fb512ef7385c16f /drivers/serial
parent35c74823cb382c610be908f1b92f980b84e7c37c (diff)
parent39374aadcd0159b4744ab456f4efa100bea84bd4 (diff)
downloadop-kernel-dev-5b6b54982258c330247957a8d877b9851ac69d53.zip
op-kernel-dev-5b6b54982258c330247957a8d877b9851ac69d53.tar.gz
Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (38 commits) sh: R7785RP board updates. sh: Update r7780rp defconfig. sh: Add die chain notifiers. sh: Fix APM emulation on hp6xx. sh: Wire up more IRQs for SH7709. sh: Solution Engine 7722 board support. sh: Fix r7780rp build. sh: kdump support. sh: Move clock reporting to its own proc entry. sh: Solution Engine SH7705 board and CPU updates. serial: sh-sci: Fix module clock refcount for serial console. serial: sh-sci: Fix module clock refcounting. sh: SH7722 clock framework support. sh: hp6xx pata_platform support. sh: Obey CONFIG_HZ for HZ definition. sh: Fix fstatat64() syscall. sh: se7780 PCI support. sh: SH7780 Solution Engine board support. sh: Add a dummy SH-4 PCIC fixup. sh: Tidy up L-BOX area5 addresses. ...
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/sh-sci.c113
-rw-r--r--drivers/serial/sh-sci.h83
2 files changed, 149 insertions, 47 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 46c40bb..1f89496 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -46,6 +46,7 @@
#endif
#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
+#include <linux/ctype.h>
#include <asm/clock.h>
#include <asm/sh_bios.h>
#include <asm/kgdb.h>
@@ -61,7 +62,7 @@ struct sci_port {
unsigned int type;
/* Port IRQs: ERI, RXI, TXI, BRI (optional) */
- unsigned int irqs[SCIx_NR_IRQS];
+ unsigned int irqs[SCIx_NR_IRQS];
/* Port pin configuration */
void (*init_pins)(struct uart_port *port,
@@ -76,6 +77,11 @@ struct sci_port {
/* Break timer */
struct timer_list break_timer;
int break_flag;
+
+#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
+ /* Port clock */
+ struct clk *clk;
+#endif
};
#ifdef CONFIG_SH_KGDB
@@ -163,7 +169,7 @@ static void put_string(struct sci_port *sci_port, const char *buffer, int count)
usegdb |= sh_bios_in_gdb_mode();
#endif
#ifdef CONFIG_SH_KGDB
- usegdb |= (kgdb_in_gdb_mode && (port == kgdb_sci_port));
+ usegdb |= (kgdb_in_gdb_mode && (sci_port == kgdb_sci_port));
#endif
if (usegdb) {
@@ -204,7 +210,7 @@ static int kgdb_sci_getchar(void)
int c;
/* Keep trying to read a character, this could be neater */
- while ((c = get_char(kgdb_sci_port)) < 0)
+ while ((c = get_char(&kgdb_sci_port->port)) < 0)
cpu_relax();
return c;
@@ -212,7 +218,7 @@ static int kgdb_sci_getchar(void)
static inline void kgdb_sci_putchar(int c)
{
- put_char(kgdb_sci_port, c);
+ put_char(&kgdb_sci_port->port, c);
}
#endif /* CONFIG_SH_KGDB */
@@ -283,12 +289,23 @@ static void sci_init_pins_irda(struct uart_port *port, unsigned int cflag)
#endif
#if defined(SCIF_ONLY) || defined(SCI_AND_SCIF)
-#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7710)
+#if defined(CONFIG_CPU_SUBTYPE_SH7300)
/* SH7300 doesn't use RTS/CTS */
static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
{
sci_out(port, SCFCR, 0);
}
+#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
+static void sci_init_pins_scif(struct uart_port* port, unsigned int cflag)
+{
+ unsigned int fcr_val = 0;
+
+ set_sh771x_scif_pfc(port);
+ if (cflag & CRTSCTS) {
+ fcr_val |= SCFCR_MCE;
+ }
+ sci_out(port, SCFCR, fcr_val);
+}
#elif defined(CONFIG_CPU_SH3)
/* For SH7705, SH7706, SH7707, SH7709, SH7709A, SH7729 */
static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
@@ -350,7 +367,7 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
} else {
#ifdef CONFIG_CPU_SUBTYPE_SH7343
/* Nothing */
-#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
ctrl_outw(0x0080, SCSPTR0); /* Set RTS = 1 */
#else
ctrl_outw(0x0080, SCSPTR2); /* Set RTS = 1 */
@@ -360,7 +377,9 @@ static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
}
#endif
-#if defined(CONFIG_CPU_SUBTYPE_SH7760) || defined(CONFIG_CPU_SUBTYPE_SH7780)
+#if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7785)
static inline int scif_txroom(struct uart_port *port)
{
return SCIF_TXROOM_MAX - (sci_in(port, SCTFDR) & 0x7f);
@@ -735,12 +754,6 @@ static irqreturn_t sci_br_interrupt(int irq, void *ptr)
/* Handle BREAKs */
sci_handle_breaks(port);
-
-#ifdef CONFIG_SH_KGDB
- /* Break into the debugger if a break is detected */
- BREAKPOINT();
-#endif
-
sci_out(port, SCxSR, SCxSR_BREAK_CLEAR(port));
return IRQ_HANDLED;
@@ -947,6 +960,10 @@ static int sci_startup(struct uart_port *port)
if (s->enable)
s->enable(port);
+#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
+ s->clk = clk_get(NULL, "module_clk");
+#endif
+
sci_request_irq(s);
sci_start_tx(port);
sci_start_rx(port, 1);
@@ -964,6 +981,11 @@ static void sci_shutdown(struct uart_port *port)
if (s->disable)
s->disable(port);
+
+#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
+ clk_put(s->clk);
+ s->clk = NULL;
+#endif
}
static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
@@ -971,7 +993,6 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
{
struct sci_port *s = &sci_ports[port->line];
unsigned int status, baud, smr_val;
- unsigned long flags;
int t;
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
@@ -983,18 +1004,14 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
default:
{
#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- struct clk *clk = clk_get(NULL, "module_clk");
- t = SCBRR_VALUE(baud, clk_get_rate(clk));
- clk_put(clk);
+ t = SCBRR_VALUE(baud, clk_get_rate(s->clk));
#else
t = SCBRR_VALUE(baud);
#endif
- }
break;
+ }
}
- spin_lock_irqsave(&port->lock, flags);
-
do {
status = sci_in(port, SCxSR);
} while (!(status & SCxSR_TEND(port)));
@@ -1038,8 +1055,6 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
if ((termios->c_cflag & CREAD) != 0)
sci_start_rx(port,0);
-
- spin_unlock_irqrestore(&port->lock, flags);
}
static const char *sci_type(struct uart_port *port)
@@ -1220,10 +1235,13 @@ static int __init serial_console_setup(struct console *co, char *options)
if (!port->membase || !port->mapbase)
return -ENODEV;
- spin_lock_init(&port->lock);
-
port->type = serial_console_port->type;
+#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
+ if (!serial_console_port->clk)
+ serial_console_port->clk = clk_get(NULL, "module_clk");
+#endif
+
if (port->flags & UPF_IOREMAP)
sci_config_port(port, 0);
@@ -1247,7 +1265,7 @@ static struct console serial_console = {
.device = uart_console_device,
.write = serial_console_write,
.setup = serial_console_setup,
- .flags = CON_PRINTBUFFER,
+ .flags = CON_PRINTBUFFER,
.index = -1,
.data = &sci_uart_driver,
};
@@ -1292,11 +1310,23 @@ int __init kgdb_console_setup(struct console *co, char *options)
int parity = 'n';
int flow = 'n';
- spin_lock_init(&port->lock);
-
if (co->index != kgdb_portnum)
co->index = kgdb_portnum;
+ kgdb_sci_port = &sci_ports[co->index];
+ port = &kgdb_sci_port->port;
+
+ /*
+ * Also need to check port->type, we don't actually have any
+ * UPIO_PORT ports, but uart_report_port() handily misreports
+ * it anyways if we don't have a port available by the time this is
+ * called.
+ */
+ if (!port->type)
+ return -ENODEV;
+ if (!port->membase || !port->mapbase)
+ return -ENODEV;
+
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
else
@@ -1311,11 +1341,12 @@ int __init kgdb_console_setup(struct console *co, char *options)
#ifdef CONFIG_SH_KGDB_CONSOLE
static struct console kgdb_console = {
- .name = "ttySC",
- .write = kgdb_console_write,
- .setup = kgdb_console_setup,
- .flags = CON_PRINTBUFFER | CON_ENABLED,
- .index = -1,
+ .name = "ttySC",
+ .device = uart_console_device,
+ .write = kgdb_console_write,
+ .setup = kgdb_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
.data = &sci_uart_driver,
};
@@ -1361,9 +1392,19 @@ static int __devinit sci_probe(struct platform_device *dev)
struct plat_sci_port *p = dev->dev.platform_data;
int i;
- for (i = 0; p && p->flags != 0 && i < SCI_NPORTS; p++, i++) {
+ for (i = 0; p && p->flags != 0; p++, i++) {
struct sci_port *sciport = &sci_ports[i];
+ /* Sanity check */
+ if (unlikely(i == SCI_NPORTS)) {
+ dev_notice(&dev->dev, "Attempting to register port "
+ "%d when only %d are available.\n",
+ i+1, SCI_NPORTS);
+ dev_notice(&dev->dev, "Consider bumping "
+ "CONFIG_SERIAL_SH_SCI_NR_UARTS!\n");
+ break;
+ }
+
sciport->port.mapbase = p->mapbase;
/*
@@ -1386,6 +1427,12 @@ static int __devinit sci_probe(struct platform_device *dev)
uart_add_one_port(&sci_uart_driver, &sciport->port);
}
+#if defined(CONFIG_SH_KGDB) && !defined(CONFIG_SH_KGDB_CONSOLE)
+ kgdb_sci_port = &sci_ports[kgdb_portnum];
+ kgdb_getchar = kgdb_sci_getchar;
+ kgdb_putchar = kgdb_sci_putchar;
+#endif
+
#ifdef CONFIG_CPU_FREQ
cpufreq_register_notifier(&sci_nb, CPUFREQ_TRANSITION_NOTIFIER);
dev_info(&dev->dev, "sci: CPU frequency notifier registered\n");
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 77f7d63..fb04fb5 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -73,9 +73,13 @@
# define SCPDR 0xA4050136 /* 16 bit SCIF */
# define SCSCR_INIT(port) 0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCIF_ONLY
-#elif defined(CONFIG_CPU_SUBTYPE_SH7710)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
# define SCSPTR0 0xA4400000 /* 16 bit SCIF */
-# define SCSCR_INIT(port) 0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
+# define SCI_NPORTS 2
+# define SCIF_ORER 0x0001 /* overrun error bit */
+# define PACR 0xa4050100
+# define PBCR 0xa4050102
+# define SCSCR_INIT(port) 0x3B
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH73180)
# define SCPDR 0xA4050138 /* 16 bit SCIF */
@@ -140,6 +144,16 @@
# define SCIF_ORER 0x0001 /* Overrun error bit */
# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
+#elif defined(CONFIG_CPU_SUBTYPE_SH7785)
+# define SCSPTR0 0xffea0024 /* 16 bit SCIF */
+# define SCSPTR1 0xffeb0024 /* 16 bit SCIF */
+# define SCSPTR2 0xffec0024 /* 16 bit SCIF */
+# define SCSPTR3 0xffed0024 /* 16 bit SCIF */
+# define SCSPTR4 0xffee0024 /* 16 bit SCIF */
+# define SCSPTR5 0xffef0024 /* 16 bit SCIF */
+# define SCIF_OPER 0x0001 /* Overrun error bit */
+# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
# define SCSPTR0 0xfffe8020 /* 16 bit SCIF */
# define SCSPTR1 0xfffe8820 /* 16 bit SCIF */
@@ -163,7 +177,10 @@
#define SCI_CTRL_FLAGS_RIE 0x40 /* all */
#define SCI_CTRL_FLAGS_TE 0x20 /* all */
#define SCI_CTRL_FLAGS_RE 0x10 /* all */
-#if defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751) || defined(CONFIG_CPU_SUBTYPE_SH7780)
+#if defined(CONFIG_CPU_SUBTYPE_SH7750) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7751) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7785)
#define SCI_CTRL_FLAGS_REIE 0x08 /* 7750 SCIF */
#else
#define SCI_CTRL_FLAGS_REIE 0
@@ -333,9 +350,15 @@
}
#ifdef CONFIG_CPU_SH3
-#if defined(CONFIG_CPU_SUBTYPE_SH7300) || \
- defined(CONFIG_CPU_SUBTYPE_SH7705) || \
- defined(CONFIG_CPU_SUBTYPE_SH7710)
+#if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
+#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
+ sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
+ h8_sci_offset, h8_sci_size) \
+ CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
+#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
+ CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7300) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7705)
#define SCIF_FNS(name, scif_offset, scif_size) \
CPU_SCIF_FNS(name, scif_offset, scif_size)
#else
@@ -362,8 +385,8 @@
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7300) || \
- defined(CONFIG_CPU_SUBTYPE_SH7705) || \
- defined(CONFIG_CPU_SUBTYPE_SH7710)
+ defined(CONFIG_CPU_SUBTYPE_SH7705)
+
SCIF_FNS(SCSMR, 0x00, 16)
SCIF_FNS(SCBRR, 0x04, 8)
SCIF_FNS(SCSCR, 0x08, 16)
@@ -385,7 +408,9 @@ SCIx_FNS(SCxTDR, 0x06, 8, 0x0c, 8, 0x06, 8, 0x0C, 8, 0x03, 8)
SCIx_FNS(SCxSR, 0x08, 8, 0x10, 8, 0x08, 16, 0x10, 16, 0x04, 8)
SCIx_FNS(SCxRDR, 0x0a, 8, 0x14, 8, 0x0A, 8, 0x14, 8, 0x05, 8)
SCIF_FNS(SCFCR, 0x0c, 8, 0x18, 16)
-#if defined(CONFIG_CPU_SUBTYPE_SH7760) || defined(CONFIG_CPU_SUBTYPE_SH7780)
+#if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7785)
SCIF_FNS(SCFDR, 0x0e, 16, 0x1C, 16)
SCIF_FNS(SCTFDR, 0x0e, 16, 0x1C, 16)
SCIF_FNS(SCRFDR, 0x0e, 16, 0x20, 16)
@@ -471,13 +496,24 @@ static inline int sci_rxd_in(struct uart_port *port)
return ctrl_inb(SCPDR)&0x10 ? 1 : 0; /* SCIF */
return 1;
}
-#elif defined(CONFIG_CPU_SUBTYPE_SH7710)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
static inline int sci_rxd_in(struct uart_port *port)
{
- if (port->mapbase == SCSPTR0)
- return ctrl_inw(SCSPTR0 + 0x10) & 0x01 ? 1 : 0;
- return 1;
+ return sci_in(port,SCxSR)&0x0010 ? 1 : 0;
+}
+static inline void set_sh771x_scif_pfc(struct uart_port *port)
+{
+ if (port->mapbase == 0xA4400000){
+ ctrl_outw(ctrl_inw(PACR)&0xffc0,PACR);
+ ctrl_outw(ctrl_inw(PBCR)&0x0fff,PBCR);
+ return;
+ }
+ if (port->mapbase == 0xA4410000){
+ ctrl_outw(ctrl_inw(PBCR)&0xf003,PBCR);
+ return;
+ }
}
+
#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || \
defined(CONFIG_CPU_SUBTYPE_SH7751) || \
defined(CONFIG_CPU_SUBTYPE_SH4_202)
@@ -576,6 +612,23 @@ static inline int sci_rxd_in(struct uart_port *port)
return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
return 1;
}
+#elif defined(CONFIG_CPU_SUBTYPE_SH7785)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+ if (port->mapbase == 0xffea0000)
+ return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xffeb0000)
+ return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xffec0000)
+ return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xffed0000)
+ return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xffee0000)
+ return ctrl_inw(SCSPTR4) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xffef0000)
+ return ctrl_inw(SCSPTR5) & 0x0001 ? 1 : 0; /* SCIF */
+ return 1;
+}
#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
static inline int sci_rxd_in(struct uart_port *port)
{
@@ -634,7 +687,9 @@ static inline int sci_rxd_in(struct uart_port *port)
* -- Mitch Davis - 15 Jul 2000
*/
-#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7780)
+#if defined(CONFIG_CPU_SUBTYPE_SH7300) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7780) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7785)
#define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(16*bps)-1)
#elif defined(CONFIG_CPU_SUBTYPE_SH7705)
#define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
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