diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap1/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/dma.c | 390 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/dma.c | 297 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_2420_data.c | 86 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_2430_data.c | 86 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 97 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 102 | ||||
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 697 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/dma.h | 232 |
10 files changed, 1451 insertions, 540 deletions
diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile index 0b1c07f..6ee1950 100644 --- a/arch/arm/mach-omap1/Makefile +++ b/arch/arm/mach-omap1/Makefile @@ -3,7 +3,7 @@ # # Common support -obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o +obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o dma.o obj-y += clock.o clock_data.o opp_data.o obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o diff --git a/arch/arm/mach-omap1/dma.c b/arch/arm/mach-omap1/dma.c new file mode 100644 index 0000000..d855934 --- /dev/null +++ b/arch/arm/mach-omap1/dma.c @@ -0,0 +1,390 @@ +/* + * OMAP1/OMAP7xx - specific DMA driver + * + * Copyright (C) 2003 - 2008 Nokia Corporation + * Author: Juha Yrjölä <juha.yrjola@nokia.com> + * DMA channel linking for 1610 by Samuel Ortiz <samuel.ortiz@nokia.com> + * Graphics DMA and LCD DMA graphics tranformations + * by Imre Deak <imre.deak@nokia.com> + * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc. + * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc. + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ + * Converted DMA library into platform driver + * - G, Manjunath Kondaiah <manjugk@ti.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/err.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> + +#include <plat/dma.h> +#include <plat/tc.h> +#include <plat/irqs.h> + +#define OMAP1_DMA_BASE (0xfffed800) +#define OMAP1_LOGICAL_DMA_CH_COUNT 17 +#define OMAP1_DMA_STRIDE 0x40 + +static u32 errata; +static u32 enable_1510_mode; +static u8 dma_stride; +static enum omap_reg_offsets dma_common_ch_start, dma_common_ch_end; + +static u16 reg_map[] = { + [GCR] = 0x400, + [GSCR] = 0x404, + [GRST1] = 0x408, + [HW_ID] = 0x442, + [PCH2_ID] = 0x444, + [PCH0_ID] = 0x446, + [PCH1_ID] = 0x448, + [PCHG_ID] = 0x44a, + [PCHD_ID] = 0x44c, + [CAPS_0] = 0x44e, + [CAPS_1] = 0x452, + [CAPS_2] = 0x456, + [CAPS_3] = 0x458, + [CAPS_4] = 0x45a, + [PCH2_SR] = 0x460, + [PCH0_SR] = 0x480, + [PCH1_SR] = 0x482, + [PCHD_SR] = 0x4c0, + + /* Common Registers */ + [CSDP] = 0x00, + [CCR] = 0x02, + [CICR] = 0x04, + [CSR] = 0x06, + [CEN] = 0x10, + [CFN] = 0x12, + [CSFI] = 0x14, + [CSEI] = 0x16, + [CPC] = 0x18, /* 15xx only */ + [CSAC] = 0x18, + [CDAC] = 0x1a, + [CDEI] = 0x1c, + [CDFI] = 0x1e, + [CLNK_CTRL] = 0x28, + + /* Channel specific register offsets */ + [CSSA] = 0x08, + [CDSA] = 0x0c, + [COLOR] = 0x20, + [CCR2] = 0x24, + [LCH_CTRL] = 0x2a, +}; + +static struct resource res[] __initdata = { + [0] = { + .start = OMAP1_DMA_BASE, + .end = OMAP1_DMA_BASE + SZ_2K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "0", + .start = INT_DMA_CH0_6, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .name = "1", + .start = INT_DMA_CH1_7, + .flags = IORESOURCE_IRQ, + }, + [3] = { + .name = "2", + .start = INT_DMA_CH2_8, + .flags = IORESOURCE_IRQ, + }, + [4] = { + .name = "3", + .start = INT_DMA_CH3, + .flags = IORESOURCE_IRQ, + }, + [5] = { + .name = "4", + .start = INT_DMA_CH4, + .flags = IORESOURCE_IRQ, + }, + [6] = { + .name = "5", + .start = INT_DMA_CH5, + .flags = IORESOURCE_IRQ, + }, + /* Handled in lcd_dma.c */ + [7] = { + .name = "6", + .start = INT_1610_DMA_CH6, + .flags = IORESOURCE_IRQ, + }, + /* irq's for omap16xx and omap7xx */ + [8] = { + .name = "7", + .start = INT_1610_DMA_CH7, + .flags = IORESOURCE_IRQ, + }, + [9] = { + .name = "8", + .start = INT_1610_DMA_CH8, + .flags = IORESOURCE_IRQ, + }, + [10] = { + .name = "9", + .start = INT_1610_DMA_CH9, + .flags = IORESOURCE_IRQ, + }, + [11] = { + .name = "10", + .start = INT_1610_DMA_CH10, + .flags = IORESOURCE_IRQ, + }, + [12] = { + .name = "11", + .start = INT_1610_DMA_CH11, + .flags = IORESOURCE_IRQ, + }, + [13] = { + .name = "12", + .start = INT_1610_DMA_CH12, + .flags = IORESOURCE_IRQ, + }, + [14] = { + .name = "13", + .start = INT_1610_DMA_CH13, + .flags = IORESOURCE_IRQ, + }, + [15] = { + .name = "14", + .start = INT_1610_DMA_CH14, + .flags = IORESOURCE_IRQ, + }, + [16] = { + .name = "15", + .start = INT_1610_DMA_CH15, + .flags = IORESOURCE_IRQ, + }, + [17] = { + .name = "16", + .start = INT_DMA_LCD, + .flags = IORESOURCE_IRQ, + }, +}; + +static void __iomem *dma_base; +static inline void dma_write(u32 val, int reg, int lch) +{ + u8 stride; + u32 offset; + + stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + offset = reg_map[reg] + (stride * lch); + + __raw_writew(val, dma_base + offset); + if ((reg > CLNK_CTRL && reg < CCEN) || + (reg > PCHD_ID && reg < CAPS_2)) { + u32 offset2 = reg_map[reg] + 2 + (stride * lch); + __raw_writew(val >> 16, dma_base + offset2); + } +} + +static inline u32 dma_read(int reg, int lch) +{ + u8 stride; + u32 offset, val; + + stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + offset = reg_map[reg] + (stride * lch); + + val = __raw_readw(dma_base + offset); + if ((reg > CLNK_CTRL && reg < CCEN) || + (reg > PCHD_ID && reg < CAPS_2)) { + u16 upper; + u32 offset2 = reg_map[reg] + 2 + (stride * lch); + upper = __raw_readw(dma_base + offset2); + val |= (upper << 16); + } + return val; +} + +static void omap1_clear_lch_regs(int lch) +{ + int i = dma_common_ch_start; + + for (; i <= dma_common_ch_end; i += 1) + dma_write(0, i, lch); +} + +static void omap1_clear_dma(int lch) +{ + u32 l; + + l = dma_read(CCR, lch); + l &= ~OMAP_DMA_CCR_EN; + dma_write(l, CCR, lch); + + /* Clear pending interrupts */ + l = dma_read(CSR, lch); +} + +static void omap1_show_dma_caps(void) +{ + if (enable_1510_mode) { + printk(KERN_INFO "DMA support for OMAP15xx initialized\n"); + } else { + u16 w; + printk(KERN_INFO "OMAP DMA hardware version %d\n", + dma_read(HW_ID, 0)); + printk(KERN_INFO "DMA capabilities: %08x:%08x:%04x:%04x:%04x\n", + dma_read(CAPS_0, 0), dma_read(CAPS_1, 0), + dma_read(CAPS_2, 0), dma_read(CAPS_3, 0), + dma_read(CAPS_4, 0)); + + /* Disable OMAP 3.0/3.1 compatibility mode. */ + w = dma_read(GSCR, 0); + w |= 1 << 3; + dma_write(w, GSCR, 0); + } + return; +} + +static u32 configure_dma_errata(void) +{ + + /* + * Erratum 3.2/3.3: sometimes 0 is returned if CSAC/CDAC is + * read before the DMA controller finished disabling the channel. + */ + if (!cpu_is_omap15xx()) + SET_DMA_ERRATA(DMA_ERRATA_3_3); + + return errata; +} + +static int __init omap1_system_dma_init(void) +{ + struct omap_system_dma_plat_info *p; + struct omap_dma_dev_attr *d; + struct platform_device *pdev; + int ret; + + pdev = platform_device_alloc("omap_dma_system", 0); + if (!pdev) { + pr_err("%s: Unable to device alloc for dma\n", + __func__); + return -ENOMEM; + } + + dma_base = ioremap(res[0].start, resource_size(&res[0])); + if (!dma_base) { + pr_err("%s: Unable to ioremap\n", __func__); + return -ENODEV; + } + + ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); + if (ret) { + dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_device_del; + } + + p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL); + if (!p) { + dev_err(&pdev->dev, "%s: Unable to allocate 'p' for %s\n", + __func__, pdev->name); + ret = -ENOMEM; + goto exit_device_put; + } + + d = kzalloc(sizeof(struct omap_dma_dev_attr), GFP_KERNEL); + if (!d) { + dev_err(&pdev->dev, "%s: Unable to allocate 'd' for %s\n", + __func__, pdev->name); + ret = -ENOMEM; + goto exit_release_p; + } + + d->lch_count = OMAP1_LOGICAL_DMA_CH_COUNT; + + /* Valid attributes for omap1 plus processors */ + if (cpu_is_omap15xx()) + d->dev_caps = ENABLE_1510_MODE; + enable_1510_mode = d->dev_caps & ENABLE_1510_MODE; + + d->dev_caps |= SRC_PORT; + d->dev_caps |= DST_PORT; + d->dev_caps |= SRC_INDEX; + d->dev_caps |= DST_INDEX; + d->dev_caps |= IS_BURST_ONLY4; + d->dev_caps |= CLEAR_CSR_ON_READ; + d->dev_caps |= IS_WORD_16; + + + d->chan = kzalloc(sizeof(struct omap_dma_lch) * + (d->lch_count), GFP_KERNEL); + if (!d->chan) { + dev_err(&pdev->dev, "%s: Memory allocation failed" + "for d->chan!!!\n", __func__); + goto exit_release_d; + } + + if (cpu_is_omap15xx()) + d->chan_count = 9; + else if (cpu_is_omap16xx() || cpu_is_omap7xx()) { + if (!(d->dev_caps & ENABLE_1510_MODE)) + d->chan_count = 16; + else + d->chan_count = 9; + } + + p->dma_attr = d; + + p->show_dma_caps = omap1_show_dma_caps; + p->clear_lch_regs = omap1_clear_lch_regs; + p->clear_dma = omap1_clear_dma; + p->dma_write = dma_write; + p->dma_read = dma_read; + p->disable_irq_lch = NULL; + + p->errata = configure_dma_errata(); + + ret = platform_device_add_data(pdev, p, sizeof(*p)); + if (ret) { + dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_release_chan; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_release_chan; + } + + dma_stride = OMAP1_DMA_STRIDE; + dma_common_ch_start = CPC; + dma_common_ch_end = COLOR; + + return ret; + +exit_release_chan: + kfree(d->chan); +exit_release_d: + kfree(d); +exit_release_p: + kfree(p); +exit_device_put: + platform_device_put(pdev); +exit_device_del: + platform_device_del(pdev); + + return ret; +} +arch_initcall(omap1_system_dma_init); diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index b86b062..cdfb5fa 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -4,7 +4,7 @@ # Common support obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o \ - common.o gpio.o + common.o gpio.o dma.o omap-2-3-common = irq.o sdrc.o prm2xxx_3xxx.o hwmod-common = omap_hwmod.o \ diff --git a/arch/arm/mach-omap2/dma.c b/arch/arm/mach-omap2/dma.c new file mode 100644 index 0000000..d2f15f5 --- /dev/null +++ b/arch/arm/mach-omap2/dma.c @@ -0,0 +1,297 @@ +/* + * OMAP2+ DMA driver + * + * Copyright (C) 2003 - 2008 Nokia Corporation + * Author: Juha Yrjölä <juha.yrjola@nokia.com> + * DMA channel linking for 1610 by Samuel Ortiz <samuel.ortiz@nokia.com> + * Graphics DMA and LCD DMA graphics tranformations + * by Imre Deak <imre.deak@nokia.com> + * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc. + * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc. + * + * Copyright (C) 2009 Texas Instruments + * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ + * Converted DMA library into platform driver + * - G, Manjunath Kondaiah <manjugk@ti.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/err.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> + +#include <plat/omap_hwmod.h> +#include <plat/omap_device.h> +#include <plat/dma.h> + +#define OMAP2_DMA_STRIDE 0x60 + +static u32 errata; +static u8 dma_stride; + +static struct omap_dma_dev_attr *d; + +static enum omap_reg_offsets dma_common_ch_start, dma_common_ch_end; + +static u16 reg_map[] = { + [REVISION] = 0x00, + [GCR] = 0x78, + [IRQSTATUS_L0] = 0x08, + [IRQSTATUS_L1] = 0x0c, + [IRQSTATUS_L2] = 0x10, + [IRQSTATUS_L3] = 0x14, + [IRQENABLE_L0] = 0x18, + [IRQENABLE_L1] = 0x1c, + [IRQENABLE_L2] = 0x20, + [IRQENABLE_L3] = 0x24, + [SYSSTATUS] = 0x28, + [OCP_SYSCONFIG] = 0x2c, + [CAPS_0] = 0x64, + [CAPS_2] = 0x6c, + [CAPS_3] = 0x70, + [CAPS_4] = 0x74, + + /* Common register offsets */ + [CCR] = 0x80, + [CLNK_CTRL] = 0x84, + [CICR] = 0x88, + [CSR] = 0x8c, + [CSDP] = 0x90, + [CEN] = 0x94, + [CFN] = 0x98, + [CSEI] = 0xa4, + [CSFI] = 0xa8, + [CDEI] = 0xac, + [CDFI] = 0xb0, + [CSAC] = 0xb4, + [CDAC] = 0xb8, + + /* Channel specific register offsets */ + [CSSA] = 0x9c, + [CDSA] = 0xa0, + [CCEN] = 0xbc, + [CCFN] = 0xc0, + [COLOR] = 0xc4, + + /* OMAP4 specific registers */ + [CDP] = 0xd0, + [CNDP] = 0xd4, + [CCDN] = 0xd8, +}; + +static struct omap_device_pm_latency omap2_dma_latency[] = { + { + .deactivate_func = omap_device_idle_hwmods, + .activate_func = omap_device_enable_hwmods, + .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, + }, +}; + +static void __iomem *dma_base; +static inline void dma_write(u32 val, int reg, int lch) +{ + u8 stride; + u32 offset; + + stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + offset = reg_map[reg] + (stride * lch); + __raw_writel(val, dma_base + offset); +} + +static inline u32 dma_read(int reg, int lch) +{ + u8 stride; + u32 offset, val; + + stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + offset = reg_map[reg] + (stride * lch); + val = __raw_readl(dma_base + offset); + return val; +} + +static inline void omap2_disable_irq_lch(int lch) +{ + u32 val; + + val = dma_read(IRQENABLE_L0, lch); + val &= ~(1 << lch); + dma_write(val, IRQENABLE_L0, lch); +} + +static void omap2_clear_dma(int lch) +{ + int i = dma_common_ch_start; + + for (; i <= dma_common_ch_end; i += 1) + dma_write(0, i, lch); +} + +static void omap2_show_dma_caps(void) +{ + u8 revision = dma_read(REVISION, 0) & 0xff; + printk(KERN_INFO "OMAP DMA hardware revision %d.%d\n", + revision >> 4, revision & 0xf); + return; +} + +static u32 configure_dma_errata(void) +{ + + /* + * Errata applicable for OMAP2430ES1.0 and all omap2420 + * + * I. + * Erratum ID: Not Available + * Inter Frame DMA buffering issue DMA will wrongly + * buffer elements if packing and bursting is enabled. This might + * result in data gets stalled in FIFO at the end of the block. + * Workaround: DMA channels must have BUFFERING_DISABLED bit set to + * guarantee no data will stay in the DMA FIFO in case inter frame + * buffering occurs + * + * II. + * Erratum ID: Not Available + * DMA may hang when several channels are used in parallel + * In the following configuration, DMA channel hanging can occur: + * a. Channel i, hardware synchronized, is enabled + * b. Another channel (Channel x), software synchronized, is enabled. + * c. Channel i is disabled before end of transfer + * d. Channel i is reenabled. + * e. Steps 1 to 4 are repeated a certain number of times. + * f. A third channel (Channel y), software synchronized, is enabled. + * Channel x and Channel y may hang immediately after step 'f'. + * Workaround: + * For any channel used - make sure NextLCH_ID is set to the value j. + */ + if (cpu_is_omap2420() || (cpu_is_omap2430() && + (omap_type() == OMAP2430_REV_ES1_0))) { + + SET_DMA_ERRATA(DMA_ERRATA_IFRAME_BUFFERING); + SET_DMA_ERRATA(DMA_ERRATA_PARALLEL_CHANNELS); + } + + /* + * Erratum ID: i378: OMAP2+: sDMA Channel is not disabled + * after a transaction error. + * Workaround: SW should explicitely disable the channel. + */ + if (cpu_class_is_omap2()) + SET_DMA_ERRATA(DMA_ERRATA_i378); + + /* + * Erratum ID: i541: sDMA FIFO draining does not finish + * If sDMA channel is disabled on the fly, sDMA enters standby even + * through FIFO Drain is still in progress + * Workaround: Put sDMA in NoStandby more before a logical channel is + * disabled, then put it back to SmartStandby right after the channel + * finishes FIFO draining. + */ + if (cpu_is_omap34xx()) + SET_DMA_ERRATA(DMA_ERRATA_i541); + + /* + * Erratum ID: i88 : Special programming model needed to disable DMA + * before end of block. + * Workaround: software must ensure that the DMA is configured in No + * Standby mode(DMAx_OCP_SYSCONFIG.MIDLEMODE = "01") + */ + if (omap_type() == OMAP3430_REV_ES1_0) + SET_DMA_ERRATA(DMA_ERRATA_i88); + + /* + * Erratum 3.2/3.3: sometimes 0 is returned if CSAC/CDAC is + * read before the DMA controller finished disabling the channel. + */ + SET_DMA_ERRATA(DMA_ERRATA_3_3); + + /* + * Erratum ID: Not Available + * A bug in ROM code leaves IRQ status for channels 0 and 1 uncleared + * after secure sram context save and restore. + * Work around: Hence we need to manually clear those IRQs to avoid + * spurious interrupts. This affects only secure devices. + */ + if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP)) + SET_DMA_ERRATA(DMA_ROMCODE_BUG); + + return errata; +} + +/* One time initializations */ +static int __init omap2_system_dma_init_dev(struct omap_hwmod *oh, void *unused) +{ + struct omap_device *od; + struct omap_system_dma_plat_info *p; + struct resource *mem; + char *name = "omap_dma_system"; + + dma_stride = OMAP2_DMA_STRIDE; + dma_common_ch_start = CSDP; + if (cpu_is_omap3630() || cpu_is_omap4430()) + dma_common_ch_end = CCDN; + else + dma_common_ch_end = CCFN; + + p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL); + if (!p) { + pr_err("%s: Unable to allocate pdata for %s:%s\n", + __func__, name, oh->name); + return -ENOMEM; + } + + p->dma_attr = (struct omap_dma_dev_attr *)oh->dev_attr; + p->disable_irq_lch = omap2_disable_irq_lch; + p->show_dma_caps = omap2_show_dma_caps; + p->clear_dma = omap2_clear_dma; + p->dma_write = dma_write; + p->dma_read = dma_read; + + p->clear_lch_regs = NULL; + + p->errata = configure_dma_errata(); + + od = omap_device_build(name, 0, oh, p, sizeof(*p), + omap2_dma_latency, ARRAY_SIZE(omap2_dma_latency), 0); + kfree(p); + if (IS_ERR(od)) { + pr_err("%s: Cant build omap_device for %s:%s.\n", + __func__, name, oh->name); + return IS_ERR(od); + } + + mem = platform_get_resource(&od->pdev, IORESOURCE_MEM, 0); + if (!mem) { + dev_err(&od->pdev.dev, "%s: no mem resource\n", __func__); + return -EINVAL; + } + dma_base = ioremap(mem->start, resource_size(mem)); + if (!dma_base) { + dev_err(&od->pdev.dev, "%s: ioremap fail\n", __func__); + return -ENOMEM; + } + + d = oh->dev_attr; + d->chan = kzalloc(sizeof(struct omap_dma_lch) * + (d->lch_count), GFP_KERNEL); + + if (!d->chan) { + dev_err(&od->pdev.dev, "%s: kzalloc fail\n", __func__); + return -ENOMEM; + } + return 0; +} + +static int __init omap2_system_dma_init(void) +{ + return omap_hwmod_for_each_by_class("dma", + omap2_system_dma_init_dev, NULL); +} +arch_initcall(omap2_system_dma_init); diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c index d953425..42606f6 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c @@ -42,6 +42,7 @@ static struct omap_hwmod omap2420_gpio1_hwmod; static struct omap_hwmod omap2420_gpio2_hwmod; static struct omap_hwmod omap2420_gpio3_hwmod; static struct omap_hwmod omap2420_gpio4_hwmod; +static struct omap_hwmod omap2420_dma_system_hwmod; /* L3 -> L4_CORE interface */ static struct omap_hwmod_ocp_if omap2420_l3_main__l4_core = { @@ -779,6 +780,88 @@ static struct omap_hwmod omap2420_gpio4_hwmod = { .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420), }; +/* system dma */ +static struct omap_hwmod_class_sysconfig omap2420_dma_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x002c, + .syss_offs = 0x0028, + .sysc_flags = (SYSC_HAS_SOFTRESET | SYSC_HAS_MIDLEMODE | + SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_EMUFREE | + SYSC_HAS_AUTOIDLE), + .idlemodes = (MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART), + .sysc_fields = &omap_hwmod_sysc_type1, +}; + +static struct omap_hwmod_class omap2420_dma_hwmod_class = { + .name = "dma", + .sysc = &omap2420_dma_sysc, +}; + +/* dma attributes */ +static struct omap_dma_dev_attr dma_dev_attr = { + .dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY | + IS_CSSA_32 | IS_CDSA_32, + .lch_count = 32, +}; + +static struct omap_hwmod_irq_info omap2420_dma_system_irqs[] = { + { .name = "0", .irq = 12 }, /* INT_24XX_SDMA_IRQ0 */ + { .name = "1", .irq = 13 }, /* INT_24XX_SDMA_IRQ1 */ + { .name = "2", .irq = 14 }, /* INT_24XX_SDMA_IRQ2 */ + { .name = "3", .irq = 15 }, /* INT_24XX_SDMA_IRQ3 */ +}; + +static struct omap_hwmod_addr_space omap2420_dma_system_addrs[] = { + { + .pa_start = 0x48056000, + .pa_end = 0x4a0560ff, + .flags = ADDR_TYPE_RT + }, +}; + +/* dma_system -> L3 */ +static struct omap_hwmod_ocp_if omap2420_dma_system__l3 = { + .master = &omap2420_dma_system_hwmod, + .slave = &omap2420_l3_main_hwmod, + .clk = "core_l3_ck", + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma_system master ports */ +static struct omap_hwmod_ocp_if *omap2420_dma_system_masters[] = { + &omap2420_dma_system__l3, +}; + +/* l4_core -> dma_system */ +static struct omap_hwmod_ocp_if omap2420_l4_core__dma_system = { + .master = &omap2420_l4_core_hwmod, + .slave = &omap2420_dma_system_hwmod, + .clk = "sdma_ick", + .addr = omap2420_dma_system_addrs, + .addr_cnt = ARRAY_SIZE(omap2420_dma_system_addrs), + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma_system slave ports */ +static struct omap_hwmod_ocp_if *omap2420_dma_system_slaves[] = { + &omap2420_l4_core__dma_system, +}; + +static struct omap_hwmod omap2420_dma_system_hwmod = { + .name = "dma", + .class = &omap2420_dma_hwmod_class, + .mpu_irqs = omap2420_dma_system_irqs, + .mpu_irqs_cnt = ARRAY_SIZE(omap2420_dma_system_irqs), + .main_clk = "core_l3_ck", + .slaves = omap2420_dma_system_slaves, + .slaves_cnt = ARRAY_SIZE(omap2420_dma_system_slaves), + .masters = omap2420_dma_system_masters, + .masters_cnt = ARRAY_SIZE(omap2420_dma_system_masters), + .dev_attr = &dma_dev_attr, + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420), + .flags = HWMOD_NO_IDLEST, +}; + static __initdata struct omap_hwmod *omap2420_hwmods[] = { &omap2420_l3_main_hwmod, &omap2420_l4_core_hwmod, @@ -797,6 +880,9 @@ static __initdata struct omap_hwmod *omap2420_hwmods[] = { &omap2420_gpio2_hwmod, &omap2420_gpio3_hwmod, &omap2420_gpio4_hwmod, + + /* dma_system class*/ + &omap2420_dma_system_hwmod, NULL, }; diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c index ab1d662..3315d24 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c @@ -43,6 +43,7 @@ static struct omap_hwmod omap2430_gpio2_hwmod; static struct omap_hwmod omap2430_gpio3_hwmod; static struct omap_hwmod omap2430_gpio4_hwmod; static struct omap_hwmod omap2430_gpio5_hwmod; +static struct omap_hwmod omap2430_dma_system_hwmod; /* L3 -> L4_CORE interface */ static struct omap_hwmod_ocp_if omap2430_l3_main__l4_core = { @@ -838,6 +839,88 @@ static struct omap_hwmod omap2430_gpio5_hwmod = { .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430), }; +/* dma_system */ +static struct omap_hwmod_class_sysconfig omap2430_dma_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x002c, + .syss_offs = 0x0028, + .sysc_flags = (SYSC_HAS_SOFTRESET | SYSC_HAS_MIDLEMODE | + SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_EMUFREE | + SYSC_HAS_AUTOIDLE), + .idlemodes = (MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART), + .sysc_fields = &omap_hwmod_sysc_type1, +}; + +static struct omap_hwmod_class omap2430_dma_hwmod_class = { + .name = "dma", + .sysc = &omap2430_dma_sysc, +}; + +/* dma attributes */ +static struct omap_dma_dev_attr dma_dev_attr = { + .dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY | + IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY, + .lch_count = 32, +}; + +static struct omap_hwmod_irq_info omap2430_dma_system_irqs[] = { + { .name = "0", .irq = 12 }, /* INT_24XX_SDMA_IRQ0 */ + { .name = "1", .irq = 13 }, /* INT_24XX_SDMA_IRQ1 */ + { .name = "2", .irq = 14 }, /* INT_24XX_SDMA_IRQ2 */ + { .name = "3", .irq = 15 }, /* INT_24XX_SDMA_IRQ3 */ +}; + +static struct omap_hwmod_addr_space omap2430_dma_system_addrs[] = { + { + .pa_start = 0x48056000, + .pa_end = 0x4a0560ff, + .flags = ADDR_TYPE_RT + }, +}; + +/* dma_system -> L3 */ +static struct omap_hwmod_ocp_if omap2430_dma_system__l3 = { + .master = &omap2430_dma_system_hwmod, + .slave = &omap2430_l3_main_hwmod, + .clk = "core_l3_ck", + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma_system master ports */ +static struct omap_hwmod_ocp_if *omap2430_dma_system_masters[] = { + &omap2430_dma_system__l3, +}; + +/* l4_core -> dma_system */ +static struct omap_hwmod_ocp_if omap2430_l4_core__dma_system = { + .master = &omap2430_l4_core_hwmod, + .slave = &omap2430_dma_system_hwmod, + .clk = "sdma_ick", + .addr = omap2430_dma_system_addrs, + .addr_cnt = ARRAY_SIZE(omap2430_dma_system_addrs), + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma_system slave ports */ +static struct omap_hwmod_ocp_if *omap2430_dma_system_slaves[] = { + &omap2430_l4_core__dma_system, +}; + +static struct omap_hwmod omap2430_dma_system_hwmod = { + .name = "dma", + .class = &omap2430_dma_hwmod_class, + .mpu_irqs = omap2430_dma_system_irqs, + .mpu_irqs_cnt = ARRAY_SIZE(omap2430_dma_system_irqs), + .main_clk = "core_l3_ck", + .slaves = omap2430_dma_system_slaves, + .slaves_cnt = ARRAY_SIZE(omap2430_dma_system_slaves), + .masters = omap2430_dma_system_masters, + .masters_cnt = ARRAY_SIZE(omap2430_dma_system_masters), + .dev_attr = &dma_dev_attr, + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430), + .flags = HWMOD_NO_IDLEST, +}; + static __initdata struct omap_hwmod *omap2430_hwmods[] = { &omap2430_l3_main_hwmod, &omap2430_l4_core_hwmod, @@ -857,6 +940,9 @@ static __initdata struct omap_hwmod *omap2430_hwmods[] = { &omap2430_gpio3_hwmod, &omap2430_gpio4_hwmod, &omap2430_gpio5_hwmod, + + /* dma_system class*/ + &omap2430_dma_system_hwmod, NULL, }; diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index 2687be1..d5acb63 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -52,6 +52,8 @@ static struct omap_hwmod omap3xxx_gpio4_hwmod; static struct omap_hwmod omap3xxx_gpio5_hwmod; static struct omap_hwmod omap3xxx_gpio6_hwmod; +static struct omap_hwmod omap3xxx_dma_system_hwmod; + /* L3 -> L4_CORE interface */ static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = { .master = &omap3xxx_l3_main_hwmod, @@ -1090,6 +1092,98 @@ static struct omap_hwmod omap3xxx_gpio6_hwmod = { .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430), }; +/* dma_system -> L3 */ +static struct omap_hwmod_ocp_if omap3xxx_dma_system__l3 = { + .master = &omap3xxx_dma_system_hwmod, + .slave = &omap3xxx_l3_main_hwmod, + .clk = "core_l3_ick", + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma attributes */ +static struct omap_dma_dev_attr dma_dev_attr = { + .dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY | + IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY, + .lch_count = 32, +}; + +static struct omap_hwmod_class_sysconfig omap3xxx_dma_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x002c, + .syss_offs = 0x0028, + .sysc_flags = (SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET | + SYSC_HAS_MIDLEMODE | SYSC_HAS_CLOCKACTIVITY | + SYSC_HAS_EMUFREE | SYSC_HAS_AUTOIDLE), + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART | + MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART), + .sysc_fields = &omap_hwmod_sysc_type1, +}; + +static struct omap_hwmod_class omap3xxx_dma_hwmod_class = { + .name = "dma", + .sysc = &omap3xxx_dma_sysc, +}; + +/* dma_system */ +static struct omap_hwmod_irq_info omap3xxx_dma_system_irqs[] = { + { .name = "0", .irq = 12 }, /* INT_24XX_SDMA_IRQ0 */ + { .name = "1", .irq = 13 }, /* INT_24XX_SDMA_IRQ1 */ + { .name = "2", .irq = 14 }, /* INT_24XX_SDMA_IRQ2 */ + { .name = "3", .irq = 15 }, /* INT_24XX_SDMA_IRQ3 */ +}; + +static struct omap_hwmod_addr_space omap3xxx_dma_system_addrs[] = { + { + .pa_start = 0x48056000, + .pa_end = 0x4a0560ff, + .flags = ADDR_TYPE_RT + }, +}; + +/* dma_system master ports */ +static struct omap_hwmod_ocp_if *omap3xxx_dma_system_masters[] = { + &omap3xxx_dma_system__l3, +}; + +/* l4_cfg -> dma_system */ +static struct omap_hwmod_ocp_if omap3xxx_l4_core__dma_system = { + .master = &omap3xxx_l4_core_hwmod, + .slave = &omap3xxx_dma_system_hwmod, + .clk = "core_l4_ick", + .addr = omap3xxx_dma_system_addrs, + .addr_cnt = ARRAY_SIZE(omap3xxx_dma_system_addrs), + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma_system slave ports */ +static struct omap_hwmod_ocp_if *omap3xxx_dma_system_slaves[] = { + &omap3xxx_l4_core__dma_system, +}; + +static struct omap_hwmod omap3xxx_dma_system_hwmod = { + .name = "dma", + .class = &omap3xxx_dma_hwmod_class, + .mpu_irqs = omap3xxx_dma_system_irqs, + .mpu_irqs_cnt = ARRAY_SIZE(omap3xxx_dma_system_irqs), + .main_clk = "core_l3_ick", + .prcm = { + .omap2 = { + .module_offs = CORE_MOD, + .prcm_reg_id = 1, + .module_bit = OMAP3430_ST_SDMA_SHIFT, + .idlest_reg_id = 1, + .idlest_idle_bit = OMAP3430_ST_SDMA_SHIFT, + }, + }, + .slaves = omap3xxx_dma_system_slaves, + .slaves_cnt = ARRAY_SIZE(omap3xxx_dma_system_slaves), + .masters = omap3xxx_dma_system_masters, + .masters_cnt = ARRAY_SIZE(omap3xxx_dma_system_masters), + .dev_attr = &dma_dev_attr, + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430), + .flags = HWMOD_NO_IDLEST, +}; + static __initdata struct omap_hwmod *omap3xxx_hwmods[] = { &omap3xxx_l3_main_hwmod, &omap3xxx_l4_core_hwmod, @@ -1113,6 +1207,9 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = { &omap3xxx_gpio4_hwmod, &omap3xxx_gpio5_hwmod, &omap3xxx_gpio6_hwmod, + + /* dma_system class*/ + &omap3xxx_dma_system_hwmod, NULL, }; diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index d258936..f9778fb 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -23,6 +23,7 @@ #include <plat/omap_hwmod.h> #include <plat/cpu.h> #include <plat/gpio.h> +#include <plat/dma.h> #include "omap_hwmod_common_data.h" @@ -36,6 +37,7 @@ #define OMAP44XX_DMA_REQ_START 1 /* Backward references (IPs with Bus Master capability) */ +static struct omap_hwmod omap44xx_dma_system_hwmod; static struct omap_hwmod omap44xx_dmm_hwmod; static struct omap_hwmod omap44xx_emif_fw_hwmod; static struct omap_hwmod omap44xx_l3_instr_hwmod; @@ -216,6 +218,14 @@ static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l3_main_2 = { .user = OCP_USER_MPU | OCP_USER_SDMA, }; +/* dma_system -> l3_main_2 */ +static struct omap_hwmod_ocp_if omap44xx_dma_system__l3_main_2 = { + .master = &omap44xx_dma_system_hwmod, + .slave = &omap44xx_l3_main_2_hwmod, + .clk = "l3_div_ck", + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + /* l4_cfg -> l3_main_2 */ static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_2 = { .master = &omap44xx_l4_cfg_hwmod, @@ -226,6 +236,7 @@ static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_2 = { /* l3_main_2 slave ports */ static struct omap_hwmod_ocp_if *omap44xx_l3_main_2_slaves[] = { + &omap44xx_dma_system__l3_main_2, &omap44xx_l3_main_1__l3_main_2, &omap44xx_l4_cfg__l3_main_2, }; @@ -1376,6 +1387,93 @@ static struct omap_hwmod omap44xx_gpio6_hwmod = { .slaves_cnt = ARRAY_SIZE(omap44xx_gpio6_slaves), .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430), }; + +/* + * 'dma' class + * dma controller for data exchange between memory to memory (i.e. internal or + * external memory) and gp peripherals to memory or memory to gp peripherals + */ + +static struct omap_hwmod_class_sysconfig omap44xx_dma_sysc = { + .rev_offs = 0x0000, + .sysc_offs = 0x002c, + .syss_offs = 0x0028, + .sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY | + SYSC_HAS_EMUFREE | SYSC_HAS_MIDLEMODE | + SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET | + SYSS_HAS_RESET_STATUS), + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART | + MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART), + .sysc_fields = &omap_hwmod_sysc_type1, +}; + +/* dma attributes */ +static struct omap_dma_dev_attr dma_dev_attr = { + .dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY | + IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY, + .lch_count = 32, +}; + +static struct omap_hwmod_class omap44xx_dma_hwmod_class = { + .name = "dma", + .sysc = &omap44xx_dma_sysc, +}; + +/* dma_system */ +static struct omap_hwmod_irq_info omap44xx_dma_system_irqs[] = { + { .name = "0", .irq = 12 + OMAP44XX_IRQ_GIC_START }, + { .name = "1", .irq = 13 + OMAP44XX_IRQ_GIC_START }, + { .name = "2", .irq = 14 + OMAP44XX_IRQ_GIC_START }, + { .name = "3", .irq = 15 + OMAP44XX_IRQ_GIC_START }, +}; + +/* dma_system master ports */ +static struct omap_hwmod_ocp_if *omap44xx_dma_system_masters[] = { + &omap44xx_dma_system__l3_main_2, +}; + +static struct omap_hwmod_addr_space omap44xx_dma_system_addrs[] = { + { + .pa_start = 0x4a056000, + .pa_end = 0x4a0560ff, + .flags = ADDR_TYPE_RT + }, +}; + +/* l4_cfg -> dma_system */ +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__dma_system = { + .master = &omap44xx_l4_cfg_hwmod, + .slave = &omap44xx_dma_system_hwmod, + .clk = "l4_div_ck", + .addr = omap44xx_dma_system_addrs, + .addr_cnt = ARRAY_SIZE(omap44xx_dma_system_addrs), + .user = OCP_USER_MPU | OCP_USER_SDMA, +}; + +/* dma_system slave ports */ +static struct omap_hwmod_ocp_if *omap44xx_dma_system_slaves[] = { + &omap44xx_l4_cfg__dma_system, +}; + +static struct omap_hwmod omap44xx_dma_system_hwmod = { + .name = "dma_system", + .class = &omap44xx_dma_hwmod_class, + .mpu_irqs = omap44xx_dma_system_irqs, + .mpu_irqs_cnt = ARRAY_SIZE(omap44xx_dma_system_irqs), + .main_clk = "l3_div_ck", + .prcm = { + .omap4 = { + .clkctrl_reg = OMAP4430_CM_SDMA_SDMA_CLKCTRL, + }, + }, + .slaves = omap44xx_dma_system_slaves, + .slaves_cnt = ARRAY_SIZE(omap44xx_dma_system_slaves), + .masters = omap44xx_dma_system_masters, + .masters_cnt = ARRAY_SIZE(omap44xx_dma_system_masters), + .dev_attr = &dma_dev_attr, + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430), +}; + static __initdata struct omap_hwmod *omap44xx_hwmods[] = { /* dmm class */ &omap44xx_dmm_hwmod, @@ -1391,6 +1489,10 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = { &omap44xx_l4_cfg_hwmod, &omap44xx_l4_per_hwmod, &omap44xx_l4_wkup_hwmod, + + /* dma class */ + &omap44xx_dma_system_hwmod, + /* i2c class */ &omap44xx_i2c1_hwmod, &omap44xx_i2c2_hwmod, diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index a863f55..c4b2b47 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -15,6 +15,10 @@ * * Support functions for the OMAP internal DMA channels. * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ + * Converted DMA library into DMA platform driver. + * - G, Manjunath Kondaiah <manjugk@ti.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. @@ -53,7 +57,11 @@ enum { DMA_CHAIN_STARTED, DMA_CHAIN_NOTSTARTED }; #define OMAP_FUNC_MUX_ARM_BASE (0xfffe1000 + 0xec) +static struct omap_system_dma_plat_info *p; +static struct omap_dma_dev_attr *d; + static int enable_1510_mode; +static u32 errata; static struct omap_dma_global_context_registers { u32 dma_irqenable_l0; @@ -61,27 +69,6 @@ static struct omap_dma_global_context_registers { u32 dma_gcr; } omap_dma_global_context; -struct omap_dma_lch { - int next_lch; - int dev_id; - u16 saved_csr; - u16 enabled_irqs; - const char *dev_name; - void (*callback)(int lch, u16 ch_status, void *data); - void *data; - -#ifndef CONFIG_ARCH_OMAP1 - /* required for Dynamic chaining */ - int prev_linked_ch; - int next_linked_ch; - int state; - int chain_id; - - int status; -#endif - long flags; -}; - struct dma_link_info { int *linked_dmach_q; int no_of_lchs_linked; @@ -137,15 +124,6 @@ static int omap_dma_reserve_channels; static spinlock_t dma_chan_lock; static struct omap_dma_lch *dma_chan; -static void __iomem *omap_dma_base; - -static const u8 omap1_dma_irq[OMAP1_LOGICAL_DMA_CH_COUNT] = { - INT_DMA_CH0_6, INT_DMA_CH1_7, INT_DMA_CH2_8, INT_DMA_CH3, - INT_DMA_CH4, INT_DMA_CH5, INT_1610_DMA_CH6, INT_1610_DMA_CH7, - INT_1610_DMA_CH8, INT_1610_DMA_CH9, INT_1610_DMA_CH10, - INT_1610_DMA_CH11, INT_1610_DMA_CH12, INT_1610_DMA_CH13, - INT_1610_DMA_CH14, INT_1610_DMA_CH15, INT_DMA_LCD -}; static inline void disable_lnk(int lch); static void omap_disable_channel_irq(int lch); @@ -154,27 +132,9 @@ static inline void omap_enable_channel_irq(int lch); #define REVISIT_24XX() printk(KERN_ERR "FIXME: no %s on 24xx\n", \ __func__); -#define dma_read(reg) \ -({ \ - u32 __val; \ - if (cpu_class_is_omap1()) \ - __val = __raw_readw(omap_dma_base + OMAP1_DMA_##reg); \ - else \ - __val = __raw_readl(omap_dma_base + OMAP_DMA4_##reg); \ - __val; \ -}) - -#define dma_write(val, reg) \ -({ \ - if (cpu_class_is_omap1()) \ - __raw_writew((u16)(val), omap_dma_base + OMAP1_DMA_##reg); \ - else \ - __raw_writel((val), omap_dma_base + OMAP_DMA4_##reg); \ -}) - #ifdef CONFIG_ARCH_OMAP15XX /* Returns 1 if the DMA module is in OMAP1510-compatible mode, 0 otherwise */ -static int omap_dma_in_1510_mode(void) +int omap_dma_in_1510_mode(void) { return enable_1510_mode; } @@ -206,16 +166,6 @@ static inline void set_gdma_dev(int req, int dev) #define set_gdma_dev(req, dev) do {} while (0) #endif -/* Omap1 only */ -static void clear_lch_regs(int lch) -{ - int i; - void __iomem *lch_base = omap_dma_base + OMAP1_DMA_CH_BASE(lch); - - for (i = 0; i < 0x2c; i += 2) - __raw_writew(0, lch_base + i); -} - void omap_set_dma_priority(int lch, int dst_port, int priority) { unsigned long reg; @@ -248,12 +198,12 @@ void omap_set_dma_priority(int lch, int dst_port, int priority) if (cpu_class_is_omap2()) { u32 ccr; - ccr = dma_read(CCR(lch)); + ccr = p->dma_read(CCR, lch); if (priority) ccr |= (1 << 6); else ccr &= ~(1 << 6); - dma_write(ccr, CCR(lch)); + p->dma_write(ccr, CCR, lch); } } EXPORT_SYMBOL(omap_set_dma_priority); @@ -264,31 +214,31 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count, { u32 l; - l = dma_read(CSDP(lch)); + l = p->dma_read(CSDP, lch); l &= ~0x03; l |= data_type; - dma_write(l, CSDP(lch)); + p->dma_write(l, CSDP, lch); if (cpu_class_is_omap1()) { u16 ccr; - ccr = dma_read(CCR(lch)); + ccr = p->dma_read(CCR, lch); ccr &= ~(1 << 5); if (sync_mode == OMAP_DMA_SYNC_FRAME) ccr |= 1 << 5; - dma_write(ccr, CCR(lch)); + p->dma_write(ccr, CCR, lch); - ccr = dma_read(CCR2(lch)); + ccr = p->dma_read(CCR2, lch); ccr &= ~(1 << 2); if (sync_mode == OMAP_DMA_SYNC_BLOCK) ccr |= 1 << 2; - dma_write(ccr, CCR2(lch)); + p->dma_write(ccr, CCR2, lch); } if (cpu_class_is_omap2() && dma_trigger) { u32 val; - val = dma_read(CCR(lch)); + val = p->dma_read(CCR, lch); /* DMA_SYNCHRO_CONTROL_UPPER depends on the channel number */ val &= ~((1 << 23) | (3 << 19) | 0x1f); @@ -313,11 +263,11 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count, } else { val &= ~(1 << 24); /* dest synch */ } - dma_write(val, CCR(lch)); + p->dma_write(val, CCR, lch); } - dma_write(elem_count, CEN(lch)); - dma_write(frame_count, CFN(lch)); + p->dma_write(elem_count, CEN, lch); + p->dma_write(frame_count, CFN, lch); } EXPORT_SYMBOL(omap_set_dma_transfer_params); @@ -328,7 +278,7 @@ void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color) if (cpu_class_is_omap1()) { u16 w; - w = dma_read(CCR2(lch)); + w = p->dma_read(CCR2, lch); w &= ~0x03; switch (mode) { @@ -343,23 +293,22 @@ void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color) default: BUG(); } - dma_write(w, CCR2(lch)); + p->dma_write(w, CCR2, lch); - w = dma_read(LCH_CTRL(lch)); + w = p->dma_read(LCH_CTRL, lch); w &= ~0x0f; /* Default is channel type 2D */ if (mode) { - dma_write((u16)color, COLOR_L(lch)); - dma_write((u16)(color >> 16), COLOR_U(lch)); + p->dma_write(color, COLOR, lch); w |= 1; /* Channel type G */ } - dma_write(w, LCH_CTRL(lch)); + p->dma_write(w, LCH_CTRL, lch); } if (cpu_class_is_omap2()) { u32 val; - val = dma_read(CCR(lch)); + val = p->dma_read(CCR, lch); val &= ~((1 << 17) | (1 << 16)); switch (mode) { @@ -374,10 +323,10 @@ void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color) default: BUG(); } - dma_write(val, CCR(lch)); + p->dma_write(val, CCR, lch); color &= 0xffffff; - dma_write(color, COLOR(lch)); + p->dma_write(color, COLOR, lch); } } EXPORT_SYMBOL(omap_set_dma_color_mode); @@ -387,10 +336,10 @@ void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode) if (cpu_class_is_omap2()) { u32 csdp; - csdp = dma_read(CSDP(lch)); + csdp = p->dma_read(CSDP, lch); csdp &= ~(0x3 << 16); csdp |= (mode << 16); - dma_write(csdp, CSDP(lch)); + p->dma_write(csdp, CSDP, lch); } } EXPORT_SYMBOL(omap_set_dma_write_mode); @@ -400,10 +349,10 @@ void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode) if (cpu_class_is_omap1() && !cpu_is_omap15xx()) { u32 l; - l = dma_read(LCH_CTRL(lch)); + l = p->dma_read(LCH_CTRL, lch); l &= ~0x7; l |= mode; - dma_write(l, LCH_CTRL(lch)); + p->dma_write(l, LCH_CTRL, lch); } } EXPORT_SYMBOL(omap_set_dma_channel_mode); @@ -418,27 +367,21 @@ void omap_set_dma_src_params(int lch, int src_port, int src_amode, if (cpu_class_is_omap1()) { u16 w; - w = dma_read(CSDP(lch)); + w = p->dma_read(CSDP, lch); w &= ~(0x1f << 2); w |= src_port << 2; - dma_write(w, CSDP(lch)); + p->dma_write(w, CSDP, lch); } - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); l &= ~(0x03 << 12); l |= src_amode << 12; - dma_write(l, CCR(lch)); - - if (cpu_class_is_omap1()) { - dma_write(src_start >> 16, CSSA_U(lch)); - dma_write((u16)src_start, CSSA_L(lch)); - } + p->dma_write(l, CCR, lch); - if (cpu_class_is_omap2()) - dma_write(src_start, CSSA(lch)); + p->dma_write(src_start, CSSA, lch); - dma_write(src_ei, CSEI(lch)); - dma_write(src_fi, CSFI(lch)); + p->dma_write(src_ei, CSEI, lch); + p->dma_write(src_fi, CSFI, lch); } EXPORT_SYMBOL(omap_set_dma_src_params); @@ -466,8 +409,8 @@ void omap_set_dma_src_index(int lch, int eidx, int fidx) if (cpu_class_is_omap2()) return; - dma_write(eidx, CSEI(lch)); - dma_write(fidx, CSFI(lch)); + p->dma_write(eidx, CSEI, lch); + p->dma_write(fidx, CSFI, lch); } EXPORT_SYMBOL(omap_set_dma_src_index); @@ -475,11 +418,11 @@ void omap_set_dma_src_data_pack(int lch, int enable) { u32 l; - l = dma_read(CSDP(lch)); + l = p->dma_read(CSDP, lch); l &= ~(1 << 6); if (enable) l |= (1 << 6); - dma_write(l, CSDP(lch)); + p->dma_write(l, CSDP, lch); } EXPORT_SYMBOL(omap_set_dma_src_data_pack); @@ -488,7 +431,7 @@ void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode) unsigned int burst = 0; u32 l; - l = dma_read(CSDP(lch)); + l = p->dma_read(CSDP, lch); l &= ~(0x03 << 7); switch (burst_mode) { @@ -524,7 +467,7 @@ void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode) } l |= (burst << 7); - dma_write(l, CSDP(lch)); + p->dma_write(l, CSDP, lch); } EXPORT_SYMBOL(omap_set_dma_src_burst_mode); @@ -536,27 +479,21 @@ void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode, u32 l; if (cpu_class_is_omap1()) { - l = dma_read(CSDP(lch)); + l = p->dma_read(CSDP, lch); l &= ~(0x1f << 9); l |= dest_port << 9; - dma_write(l, CSDP(lch)); + p->dma_write(l, CSDP, lch); } - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); l &= ~(0x03 << 14); l |= dest_amode << 14; - dma_write(l, CCR(lch)); - - if (cpu_class_is_omap1()) { - dma_write(dest_start >> 16, CDSA_U(lch)); - dma_write(dest_start, CDSA_L(lch)); - } + p->dma_write(l, CCR, lch); - if (cpu_class_is_omap2()) - dma_write(dest_start, CDSA(lch)); + p->dma_write(dest_start, CDSA, lch); - dma_write(dst_ei, CDEI(lch)); - dma_write(dst_fi, CDFI(lch)); + p->dma_write(dst_ei, CDEI, lch); + p->dma_write(dst_fi, CDFI, lch); } EXPORT_SYMBOL(omap_set_dma_dest_params); @@ -565,8 +502,8 @@ void omap_set_dma_dest_index(int lch, int eidx, int fidx) if (cpu_class_is_omap2()) return; - dma_write(eidx, CDEI(lch)); - dma_write(fidx, CDFI(lch)); + p->dma_write(eidx, CDEI, lch); + p->dma_write(fidx, CDFI, lch); } EXPORT_SYMBOL(omap_set_dma_dest_index); @@ -574,11 +511,11 @@ void omap_set_dma_dest_data_pack(int lch, int enable) { u32 l; - l = dma_read(CSDP(lch)); + l = p->dma_read(CSDP, lch); l &= ~(1 << 13); if (enable) l |= 1 << 13; - dma_write(l, CSDP(lch)); + p->dma_write(l, CSDP, lch); } EXPORT_SYMBOL(omap_set_dma_dest_data_pack); @@ -587,7 +524,7 @@ void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode) unsigned int burst = 0; u32 l; - l = dma_read(CSDP(lch)); + l = p->dma_read(CSDP, lch); l &= ~(0x03 << 14); switch (burst_mode) { @@ -620,7 +557,7 @@ void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode) return; } l |= (burst << 14); - dma_write(l, CSDP(lch)); + p->dma_write(l, CSDP, lch); } EXPORT_SYMBOL(omap_set_dma_dest_burst_mode); @@ -630,18 +567,18 @@ static inline void omap_enable_channel_irq(int lch) /* Clear CSR */ if (cpu_class_is_omap1()) - status = dma_read(CSR(lch)); + status = p->dma_read(CSR, lch); else if (cpu_class_is_omap2()) - dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(lch)); + p->dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR, lch); /* Enable some nice interrupts. */ - dma_write(dma_chan[lch].enabled_irqs, CICR(lch)); + p->dma_write(dma_chan[lch].enabled_irqs, CICR, lch); } static void omap_disable_channel_irq(int lch) { if (cpu_class_is_omap2()) - dma_write(0, CICR(lch)); + p->dma_write(0, CICR, lch); } void omap_enable_dma_irq(int lch, u16 bits) @@ -660,7 +597,7 @@ static inline void enable_lnk(int lch) { u32 l; - l = dma_read(CLNK_CTRL(lch)); + l = p->dma_read(CLNK_CTRL, lch); if (cpu_class_is_omap1()) l &= ~(1 << 14); @@ -675,18 +612,18 @@ static inline void enable_lnk(int lch) l = dma_chan[lch].next_linked_ch | (1 << 15); #endif - dma_write(l, CLNK_CTRL(lch)); + p->dma_write(l, CLNK_CTRL, lch); } static inline void disable_lnk(int lch) { u32 l; - l = dma_read(CLNK_CTRL(lch)); + l = p->dma_read(CLNK_CTRL, lch); /* Disable interrupts */ if (cpu_class_is_omap1()) { - dma_write(0, CICR(lch)); + p->dma_write(0, CICR, lch); /* Set the STOP_LNK bit */ l |= 1 << 14; } @@ -697,7 +634,7 @@ static inline void disable_lnk(int lch) l &= ~(1 << 15); } - dma_write(l, CLNK_CTRL(lch)); + p->dma_write(l, CLNK_CTRL, lch); dma_chan[lch].flags &= ~OMAP_DMA_ACTIVE; } @@ -710,9 +647,9 @@ static inline void omap2_enable_irq_lch(int lch) return; spin_lock_irqsave(&dma_chan_lock, flags); - val = dma_read(IRQENABLE_L0); + val = p->dma_read(IRQENABLE_L0, lch); val |= 1 << lch; - dma_write(val, IRQENABLE_L0); + p->dma_write(val, IRQENABLE_L0, lch); spin_unlock_irqrestore(&dma_chan_lock, flags); } @@ -725,9 +662,9 @@ static inline void omap2_disable_irq_lch(int lch) return; spin_lock_irqsave(&dma_chan_lock, flags); - val = dma_read(IRQENABLE_L0); + val = p->dma_read(IRQENABLE_L0, lch); val &= ~(1 << lch); - dma_write(val, IRQENABLE_L0); + p->dma_write(val, IRQENABLE_L0, lch); spin_unlock_irqrestore(&dma_chan_lock, flags); } @@ -754,8 +691,8 @@ int omap_request_dma(int dev_id, const char *dev_name, chan = dma_chan + free_ch; chan->dev_id = dev_id; - if (cpu_class_is_omap1()) - clear_lch_regs(free_ch); + if (p->clear_lch_regs) + p->clear_lch_regs(free_ch); if (cpu_class_is_omap2()) omap_clear_dma(free_ch); @@ -792,17 +729,17 @@ int omap_request_dma(int dev_id, const char *dev_name, * Disable the 1510 compatibility mode and set the sync device * id. */ - dma_write(dev_id | (1 << 10), CCR(free_ch)); + p->dma_write(dev_id | (1 << 10), CCR, free_ch); } else if (cpu_is_omap7xx() || cpu_is_omap15xx()) { - dma_write(dev_id, CCR(free_ch)); + p->dma_write(dev_id, CCR, free_ch); } if (cpu_class_is_omap2()) { omap2_enable_irq_lch(free_ch); omap_enable_channel_irq(free_ch); /* Clear the CSR register and IRQ status register */ - dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(free_ch)); - dma_write(1 << free_ch, IRQSTATUS_L0); + p->dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR, free_ch); + p->dma_write(1 << free_ch, IRQSTATUS_L0, 0); } *dma_ch_out = free_ch; @@ -823,23 +760,23 @@ void omap_free_dma(int lch) if (cpu_class_is_omap1()) { /* Disable all DMA interrupts for the channel. */ - dma_write(0, CICR(lch)); + p->dma_write(0, CICR, lch); /* Make sure the DMA transfer is stopped. */ - dma_write(0, CCR(lch)); + p->dma_write(0, CCR, lch); } if (cpu_class_is_omap2()) { omap2_disable_irq_lch(lch); /* Clear the CSR register and IRQ status register */ - dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(lch)); - dma_write(1 << lch, IRQSTATUS_L0); + p->dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR, lch); + p->dma_write(1 << lch, IRQSTATUS_L0, lch); /* Disable all DMA interrupts for the channel. */ - dma_write(0, CICR(lch)); + p->dma_write(0, CICR, lch); /* Make sure the DMA transfer is stopped. */ - dma_write(0, CCR(lch)); + p->dma_write(0, CCR, lch); omap_clear_dma(lch); } @@ -880,7 +817,7 @@ omap_dma_set_global_params(int arb_rate, int max_fifo_depth, int tparams) reg |= (0x3 & tparams) << 12; reg |= (arb_rate & 0xff) << 16; - dma_write(reg, GCR); + p->dma_write(reg, GCR, 0); } EXPORT_SYMBOL(omap_dma_set_global_params); @@ -903,14 +840,14 @@ omap_dma_set_prio_lch(int lch, unsigned char read_prio, printk(KERN_ERR "Invalid channel id\n"); return -EINVAL; } - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); l &= ~((1 << 6) | (1 << 26)); if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26); else l |= ((read_prio & 0x1) << 6); - dma_write(l, CCR(lch)); + p->dma_write(l, CCR, lch); return 0; } @@ -925,25 +862,7 @@ void omap_clear_dma(int lch) unsigned long flags; local_irq_save(flags); - - if (cpu_class_is_omap1()) { - u32 l; - - l = dma_read(CCR(lch)); - l &= ~OMAP_DMA_CCR_EN; - dma_write(l, CCR(lch)); - - /* Clear pending interrupts */ - l = dma_read(CSR(lch)); - } - - if (cpu_class_is_omap2()) { - int i; - void __iomem *lch_base = omap_dma_base + OMAP_DMA4_CH_BASE(lch); - for (i = 0; i < 0x44; i += 4) - __raw_writel(0, lch_base + i); - } - + p->clear_dma(lch); local_irq_restore(flags); } EXPORT_SYMBOL(omap_clear_dma); @@ -957,13 +876,13 @@ void omap_start_dma(int lch) * before starting dma transfer. */ if (cpu_is_omap15xx()) - dma_write(0, CPC(lch)); + p->dma_write(0, CPC, lch); else - dma_write(0, CDAC(lch)); + p->dma_write(0, CDAC, lch); if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) { int next_lch, cur_lch; - char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT]; + char dma_chan_link_map[dma_lch_count]; dma_chan_link_map[lch] = 1; /* Set the link register of the first channel */ @@ -985,32 +904,18 @@ void omap_start_dma(int lch) cur_lch = next_lch; } while (next_lch != -1); - } else if (cpu_is_omap242x() || - (cpu_is_omap243x() && omap_type() <= OMAP2430_REV_ES1_0)) { - - /* Errata: Need to write lch even if not using chaining */ - dma_write(lch, CLNK_CTRL(lch)); - } + } else if (IS_DMA_ERRATA(DMA_ERRATA_PARALLEL_CHANNELS)) + p->dma_write(lch, CLNK_CTRL, lch); omap_enable_channel_irq(lch); - l = dma_read(CCR(lch)); - - /* - * Errata: Inter Frame DMA buffering issue (All OMAP2420 and - * OMAP2430ES1.0): DMA will wrongly buffer elements if packing and - * bursting is enabled. This might result in data gets stalled in - * FIFO at the end of the block. - * Workaround: DMA channels must have BUFFERING_DISABLED bit set to - * guarantee no data will stay in the DMA FIFO in case inter frame - * buffering occurs. - */ - if (cpu_is_omap2420() || - (cpu_is_omap2430() && (omap_type() == OMAP2430_REV_ES1_0))) - l |= OMAP_DMA_CCR_BUFFERING_DISABLE; + l = p->dma_read(CCR, lch); + if (IS_DMA_ERRATA(DMA_ERRATA_IFRAME_BUFFERING)) + l |= OMAP_DMA_CCR_BUFFERING_DISABLE; l |= OMAP_DMA_CCR_EN; - dma_write(l, CCR(lch)); + + p->dma_write(l, CCR, lch); dma_chan[lch].flags |= OMAP_DMA_ACTIVE; } @@ -1022,46 +927,46 @@ void omap_stop_dma(int lch) /* Disable all interrupts on the channel */ if (cpu_class_is_omap1()) - dma_write(0, CICR(lch)); + p->dma_write(0, CICR, lch); - l = dma_read(CCR(lch)); - /* OMAP3 Errata i541: sDMA FIFO draining does not finish */ - if (cpu_is_omap34xx() && (l & OMAP_DMA_CCR_SEL_SRC_DST_SYNC)) { + l = p->dma_read(CCR, lch); + if (IS_DMA_ERRATA(DMA_ERRATA_i541) && + (l & OMAP_DMA_CCR_SEL_SRC_DST_SYNC)) { int i = 0; u32 sys_cf; /* Configure No-Standby */ - l = dma_read(OCP_SYSCONFIG); + l = p->dma_read(OCP_SYSCONFIG, lch); sys_cf = l; l &= ~DMA_SYSCONFIG_MIDLEMODE_MASK; l |= DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_NO_IDLE); - dma_write(l , OCP_SYSCONFIG); + p->dma_write(l , OCP_SYSCONFIG, 0); - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); l &= ~OMAP_DMA_CCR_EN; - dma_write(l, CCR(lch)); + p->dma_write(l, CCR, lch); /* Wait for sDMA FIFO drain */ - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); while (i < 100 && (l & (OMAP_DMA_CCR_RD_ACTIVE | OMAP_DMA_CCR_WR_ACTIVE))) { udelay(5); i++; - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); } if (i >= 100) printk(KERN_ERR "DMA drain did not complete on " "lch %d\n", lch); /* Restore OCP_SYSCONFIG */ - dma_write(sys_cf, OCP_SYSCONFIG); + p->dma_write(sys_cf, OCP_SYSCONFIG, lch); } else { l &= ~OMAP_DMA_CCR_EN; - dma_write(l, CCR(lch)); + p->dma_write(l, CCR, lch); } if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) { int next_lch, cur_lch = lch; - char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT]; + char dma_chan_link_map[dma_lch_count]; memset(dma_chan_link_map, 0, sizeof(dma_chan_link_map)); do { @@ -1122,19 +1027,15 @@ dma_addr_t omap_get_dma_src_pos(int lch) dma_addr_t offset = 0; if (cpu_is_omap15xx()) - offset = dma_read(CPC(lch)); + offset = p->dma_read(CPC, lch); else - offset = dma_read(CSAC(lch)); + offset = p->dma_read(CSAC, lch); - /* - * omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is - * read before the DMA controller finished disabling the channel. - */ - if (!cpu_is_omap15xx() && offset == 0) - offset = dma_read(CSAC(lch)); + if (IS_DMA_ERRATA(DMA_ERRATA_3_3) && offset == 0) + offset = p->dma_read(CSAC, lch); if (cpu_class_is_omap1()) - offset |= (dma_read(CSSA_U(lch)) << 16); + offset |= (p->dma_read(CSSA, lch) & 0xFFFF0000); return offset; } @@ -1153,19 +1054,19 @@ dma_addr_t omap_get_dma_dst_pos(int lch) dma_addr_t offset = 0; if (cpu_is_omap15xx()) - offset = dma_read(CPC(lch)); + offset = p->dma_read(CPC, lch); else - offset = dma_read(CDAC(lch)); + offset = p->dma_read(CDAC, lch); /* * omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is * read before the DMA controller finished disabling the channel. */ if (!cpu_is_omap15xx() && offset == 0) - offset = dma_read(CDAC(lch)); + offset = p->dma_read(CDAC, lch); if (cpu_class_is_omap1()) - offset |= (dma_read(CDSA_U(lch)) << 16); + offset |= (p->dma_read(CDSA, lch) & 0xFFFF0000); return offset; } @@ -1173,7 +1074,7 @@ EXPORT_SYMBOL(omap_get_dma_dst_pos); int omap_get_dma_active_status(int lch) { - return (dma_read(CCR(lch)) & OMAP_DMA_CCR_EN) != 0; + return (p->dma_read(CCR, lch) & OMAP_DMA_CCR_EN) != 0; } EXPORT_SYMBOL(omap_get_dma_active_status); @@ -1186,7 +1087,7 @@ int omap_dma_running(void) return 1; for (lch = 0; lch < dma_chan_count; lch++) - if (dma_read(CCR(lch)) & OMAP_DMA_CCR_EN) + if (p->dma_read(CCR, lch) & OMAP_DMA_CCR_EN) return 1; return 0; @@ -1201,8 +1102,8 @@ void omap_dma_link_lch(int lch_head, int lch_queue) { if (omap_dma_in_1510_mode()) { if (lch_head == lch_queue) { - dma_write(dma_read(CCR(lch_head)) | (3 << 8), - CCR(lch_head)); + p->dma_write(p->dma_read(CCR, lch_head) | (3 << 8), + CCR, lch_head); return; } printk(KERN_ERR "DMA linking is not supported in 1510 mode\n"); @@ -1228,8 +1129,8 @@ void omap_dma_unlink_lch(int lch_head, int lch_queue) { if (omap_dma_in_1510_mode()) { if (lch_head == lch_queue) { - dma_write(dma_read(CCR(lch_head)) & ~(3 << 8), - CCR(lch_head)); + p->dma_write(p->dma_read(CCR, lch_head) & ~(3 << 8), + CCR, lch_head); return; } printk(KERN_ERR "DMA linking is not supported in 1510 mode\n"); @@ -1255,8 +1156,6 @@ void omap_dma_unlink_lch(int lch_head, int lch_queue) } EXPORT_SYMBOL(omap_dma_unlink_lch); -/*----------------------------------------------------------------------------*/ - #ifndef CONFIG_ARCH_OMAP1 /* Create chain of DMA channesls */ static void create_dma_lch_chain(int lch_head, int lch_queue) @@ -1281,15 +1180,15 @@ static void create_dma_lch_chain(int lch_head, int lch_queue) lch_queue; } - l = dma_read(CLNK_CTRL(lch_head)); + l = p->dma_read(CLNK_CTRL, lch_head); l &= ~(0x1f); l |= lch_queue; - dma_write(l, CLNK_CTRL(lch_head)); + p->dma_write(l, CLNK_CTRL, lch_head); - l = dma_read(CLNK_CTRL(lch_queue)); + l = p->dma_read(CLNK_CTRL, lch_queue); l &= ~(0x1f); l |= (dma_chan[lch_queue].next_linked_ch); - dma_write(l, CLNK_CTRL(lch_queue)); + p->dma_write(l, CLNK_CTRL, lch_queue); } /** @@ -1565,13 +1464,13 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start, /* Set the params to the free channel */ if (src_start != 0) - dma_write(src_start, CSSA(lch)); + p->dma_write(src_start, CSSA, lch); if (dest_start != 0) - dma_write(dest_start, CDSA(lch)); + p->dma_write(dest_start, CDSA, lch); /* Write the buffer size */ - dma_write(elem_count, CEN(lch)); - dma_write(frame_count, CFN(lch)); + p->dma_write(elem_count, CEN, lch); + p->dma_write(frame_count, CFN, lch); /* * If the chain is dynamically linked, @@ -1604,8 +1503,8 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start, enable_lnk(dma_chan[lch].prev_linked_ch); dma_chan[lch].state = DMA_CH_QUEUED; start_dma = 0; - if (0 == ((1 << 7) & dma_read( - CCR(dma_chan[lch].prev_linked_ch)))) { + if (0 == ((1 << 7) & p->dma_read( + CCR, dma_chan[lch].prev_linked_ch))) { disable_lnk(dma_chan[lch]. prev_linked_ch); pr_debug("\n prev ch is stopped\n"); @@ -1621,7 +1520,7 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start, } omap_enable_channel_irq(lch); - l = dma_read(CCR(lch)); + l = p->dma_read(CCR, lch); if ((0 == (l & (1 << 24)))) l &= ~(1 << 25); @@ -1632,12 +1531,12 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start, l |= (1 << 7); dma_chan[lch].state = DMA_CH_STARTED; pr_debug("starting %d\n", lch); - dma_write(l, CCR(lch)); + p->dma_write(l, CCR, lch); } else start_dma = 0; } else { if (0 == (l & (1 << 7))) - dma_write(l, CCR(lch)); + p->dma_write(l, CCR, lch); } dma_chan[lch].flags |= OMAP_DMA_ACTIVE; } @@ -1682,7 +1581,7 @@ int omap_start_dma_chain_transfers(int chain_id) omap_enable_channel_irq(channels[0]); } - l = dma_read(CCR(channels[0])); + l = p->dma_read(CCR, channels[0]); l |= (1 << 7); dma_linked_lch[chain_id].chain_state = DMA_CHAIN_STARTED; dma_chan[channels[0]].state = DMA_CH_STARTED; @@ -1691,7 +1590,7 @@ int omap_start_dma_chain_transfers(int chain_id) l &= ~(1 << 25); else l |= (1 << 25); - dma_write(l, CCR(channels[0])); + p->dma_write(l, CCR, channels[0]); dma_chan[channels[0]].flags |= OMAP_DMA_ACTIVE; @@ -1711,7 +1610,7 @@ int omap_stop_dma_chain_transfers(int chain_id) { int *channels; u32 l, i; - u32 sys_cf; + u32 sys_cf = 0; /* Check for input params */ if (unlikely((chain_id < 0 || chain_id >= dma_lch_count))) { @@ -1726,22 +1625,20 @@ int omap_stop_dma_chain_transfers(int chain_id) } channels = dma_linked_lch[chain_id].linked_dmach_q; - /* - * DMA Errata: - * Special programming model needed to disable DMA before end of block - */ - sys_cf = dma_read(OCP_SYSCONFIG); - l = sys_cf; - /* Middle mode reg set no Standby */ - l &= ~((1 << 12)|(1 << 13)); - dma_write(l, OCP_SYSCONFIG); + if (IS_DMA_ERRATA(DMA_ERRATA_i88)) { + sys_cf = p->dma_read(OCP_SYSCONFIG, 0); + l = sys_cf; + /* Middle mode reg set no Standby */ + l &= ~((1 << 12)|(1 << 13)); + p->dma_write(l, OCP_SYSCONFIG, 0); + } for (i = 0; i < dma_linked_lch[chain_id].no_of_lchs_linked; i++) { /* Stop the Channel transmission */ - l = dma_read(CCR(channels[i])); + l = p->dma_read(CCR, channels[i]); l &= ~(1 << 7); - dma_write(l, CCR(channels[i])); + p->dma_write(l, CCR, channels[i]); /* Disable the link in all the channels */ disable_lnk(channels[i]); @@ -1753,8 +1650,8 @@ int omap_stop_dma_chain_transfers(int chain_id) /* Reset the Queue pointers */ OMAP_DMA_CHAIN_QINIT(chain_id); - /* Errata - put in the old value */ - dma_write(sys_cf, OCP_SYSCONFIG); + if (IS_DMA_ERRATA(DMA_ERRATA_i88)) + p->dma_write(sys_cf, OCP_SYSCONFIG, 0); return 0; } @@ -1796,8 +1693,8 @@ int omap_get_dma_chain_index(int chain_id, int *ei, int *fi) /* Get the current channel */ lch = channels[dma_linked_lch[chain_id].q_head]; - *ei = dma_read(CCEN(lch)); - *fi = dma_read(CCFN(lch)); + *ei = p->dma_read(CCEN, lch); + *fi = p->dma_read(CCFN, lch); return 0; } @@ -1834,7 +1731,7 @@ int omap_get_dma_chain_dst_pos(int chain_id) /* Get the current channel */ lch = channels[dma_linked_lch[chain_id].q_head]; - return dma_read(CDAC(lch)); + return p->dma_read(CDAC, lch); } EXPORT_SYMBOL(omap_get_dma_chain_dst_pos); @@ -1868,7 +1765,7 @@ int omap_get_dma_chain_src_pos(int chain_id) /* Get the current channel */ lch = channels[dma_linked_lch[chain_id].q_head]; - return dma_read(CSAC(lch)); + return p->dma_read(CSAC, lch); } EXPORT_SYMBOL(omap_get_dma_chain_src_pos); #endif /* ifndef CONFIG_ARCH_OMAP1 */ @@ -1885,7 +1782,7 @@ static int omap1_dma_handle_ch(int ch) csr = dma_chan[ch].saved_csr; dma_chan[ch].saved_csr = 0; } else - csr = dma_read(CSR(ch)); + csr = p->dma_read(CSR, ch); if (enable_1510_mode && ch <= 2 && (csr >> 7) != 0) { dma_chan[ch + 6].saved_csr = csr >> 7; csr &= 0x7f; @@ -1938,13 +1835,13 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id) static int omap2_dma_handle_ch(int ch) { - u32 status = dma_read(CSR(ch)); + u32 status = p->dma_read(CSR, ch); if (!status) { if (printk_ratelimit()) printk(KERN_WARNING "Spurious DMA IRQ for lch %d\n", ch); - dma_write(1 << ch, IRQSTATUS_L0); + p->dma_write(1 << ch, IRQSTATUS_L0, ch); return 0; } if (unlikely(dma_chan[ch].dev_id == -1)) { @@ -1960,17 +1857,12 @@ static int omap2_dma_handle_ch(int ch) if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) { printk(KERN_INFO "DMA transaction error with device %d\n", dma_chan[ch].dev_id); - if (cpu_class_is_omap2()) { - /* - * Errata: sDMA Channel is not disabled - * after a transaction error. So we explicitely - * disable the channel - */ + if (IS_DMA_ERRATA(DMA_ERRATA_i378)) { u32 ccr; - ccr = dma_read(CCR(ch)); + ccr = p->dma_read(CCR, ch); ccr &= ~OMAP_DMA_CCR_EN; - dma_write(ccr, CCR(ch)); + p->dma_write(ccr, CCR, ch); dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE; } } @@ -1981,16 +1873,16 @@ static int omap2_dma_handle_ch(int ch) printk(KERN_INFO "DMA misaligned error with device %d\n", dma_chan[ch].dev_id); - dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(ch)); - dma_write(1 << ch, IRQSTATUS_L0); + p->dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR, ch); + p->dma_write(1 << ch, IRQSTATUS_L0, ch); /* read back the register to flush the write */ - dma_read(IRQSTATUS_L0); + p->dma_read(IRQSTATUS_L0, ch); /* If the ch is not chained then chain_id will be -1 */ if (dma_chan[ch].chain_id != -1) { int chain_id = dma_chan[ch].chain_id; dma_chan[ch].state = DMA_CH_NOTSTARTED; - if (dma_read(CLNK_CTRL(ch)) & (1 << 15)) + if (p->dma_read(CLNK_CTRL, ch) & (1 << 15)) dma_chan[dma_chan[ch].next_linked_ch].state = DMA_CH_STARTED; if (dma_linked_lch[chain_id].chain_mode == @@ -2000,10 +1892,10 @@ static int omap2_dma_handle_ch(int ch) if (!OMAP_DMA_CHAIN_QEMPTY(chain_id)) OMAP_DMA_CHAIN_INCQHEAD(chain_id); - status = dma_read(CSR(ch)); + status = p->dma_read(CSR, ch); } - dma_write(status, CSR(ch)); + p->dma_write(status, CSR, ch); if (likely(dma_chan[ch].callback != NULL)) dma_chan[ch].callback(ch, status, dma_chan[ch].data); @@ -2017,13 +1909,13 @@ static irqreturn_t omap2_dma_irq_handler(int irq, void *dev_id) u32 val, enable_reg; int i; - val = dma_read(IRQSTATUS_L0); + val = p->dma_read(IRQSTATUS_L0, 0); if (val == 0) { if (printk_ratelimit()) printk(KERN_WARNING "Spurious DMA IRQ\n"); return IRQ_HANDLED; } - enable_reg = dma_read(IRQENABLE_L0); + enable_reg = p->dma_read(IRQENABLE_L0, 0); val &= enable_reg; /* Dispatch only relevant interrupts */ for (i = 0; i < dma_lch_count && val != 0; i++) { if (val & 1) @@ -2049,119 +1941,66 @@ static struct irqaction omap24xx_dma_irq; void omap_dma_global_context_save(void) { omap_dma_global_context.dma_irqenable_l0 = - dma_read(IRQENABLE_L0); + p->dma_read(IRQENABLE_L0, 0); omap_dma_global_context.dma_ocp_sysconfig = - dma_read(OCP_SYSCONFIG); - omap_dma_global_context.dma_gcr = dma_read(GCR); + p->dma_read(OCP_SYSCONFIG, 0); + omap_dma_global_context.dma_gcr = p->dma_read(GCR, 0); } void omap_dma_global_context_restore(void) { int ch; - dma_write(omap_dma_global_context.dma_gcr, GCR); - dma_write(omap_dma_global_context.dma_ocp_sysconfig, - OCP_SYSCONFIG); - dma_write(omap_dma_global_context.dma_irqenable_l0, - IRQENABLE_L0); + p->dma_write(omap_dma_global_context.dma_gcr, GCR, 0); + p->dma_write(omap_dma_global_context.dma_ocp_sysconfig, + OCP_SYSCONFIG, 0); + p->dma_write(omap_dma_global_context.dma_irqenable_l0, + IRQENABLE_L0, 0); - /* - * A bug in ROM code leaves IRQ status for channels 0 and 1 uncleared - * after secure sram context save and restore. Hence we need to - * manually clear those IRQs to avoid spurious interrupts. This - * affects only secure devices. - */ - if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP)) - dma_write(0x3 , IRQSTATUS_L0); + if (IS_DMA_ERRATA(DMA_ROMCODE_BUG)) + p->dma_write(0x3 , IRQSTATUS_L0, 0); for (ch = 0; ch < dma_chan_count; ch++) if (dma_chan[ch].dev_id != -1) omap_clear_dma(ch); } -/*----------------------------------------------------------------------------*/ - -static int __init omap_init_dma(void) +static int __devinit omap_system_dma_probe(struct platform_device *pdev) { - unsigned long base; - int ch, r; - - if (cpu_class_is_omap1()) { - base = OMAP1_DMA_BASE; - dma_lch_count = OMAP1_LOGICAL_DMA_CH_COUNT; - } else if (cpu_is_omap24xx()) { - base = OMAP24XX_DMA4_BASE; - dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT; - } else if (cpu_is_omap34xx()) { - base = OMAP34XX_DMA4_BASE; - dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT; - } else if (cpu_is_omap44xx()) { - base = OMAP44XX_DMA4_BASE; - dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT; - } else { - pr_err("DMA init failed for unsupported omap\n"); - return -ENODEV; + int ch, ret = 0; + int dma_irq; + char irq_name[4]; + int irq_rel; + + p = pdev->dev.platform_data; + if (!p) { + dev_err(&pdev->dev, "%s: System DMA initialized without" + "platform data\n", __func__); + return -EINVAL; } - omap_dma_base = ioremap(base, SZ_4K); - BUG_ON(!omap_dma_base); + d = p->dma_attr; + errata = p->errata; - if (cpu_class_is_omap2() && omap_dma_reserve_channels + if ((d->dev_caps & RESERVE_CHANNEL) && omap_dma_reserve_channels && (omap_dma_reserve_channels <= dma_lch_count)) - dma_lch_count = omap_dma_reserve_channels; + d->lch_count = omap_dma_reserve_channels; - dma_chan = kzalloc(sizeof(struct omap_dma_lch) * dma_lch_count, - GFP_KERNEL); - if (!dma_chan) { - r = -ENOMEM; - goto out_unmap; - } + dma_lch_count = d->lch_count; + dma_chan_count = dma_lch_count; + dma_chan = d->chan; + enable_1510_mode = d->dev_caps & ENABLE_1510_MODE; if (cpu_class_is_omap2()) { dma_linked_lch = kzalloc(sizeof(struct dma_link_info) * dma_lch_count, GFP_KERNEL); if (!dma_linked_lch) { - r = -ENOMEM; - goto out_free; + ret = -ENOMEM; + goto exit_dma_lch_fail; } } - if (cpu_is_omap15xx()) { - printk(KERN_INFO "DMA support for OMAP15xx initialized\n"); - dma_chan_count = 9; - enable_1510_mode = 1; - } else if (cpu_is_omap16xx() || cpu_is_omap7xx()) { - printk(KERN_INFO "OMAP DMA hardware version %d\n", - dma_read(HW_ID)); - printk(KERN_INFO "DMA capabilities: %08x:%08x:%04x:%04x:%04x\n", - (dma_read(CAPS_0_U) << 16) | - dma_read(CAPS_0_L), - (dma_read(CAPS_1_U) << 16) | - dma_read(CAPS_1_L), - dma_read(CAPS_2), dma_read(CAPS_3), - dma_read(CAPS_4)); - if (!enable_1510_mode) { - u16 w; - - /* Disable OMAP 3.0/3.1 compatibility mode. */ - w = dma_read(GSCR); - w |= 1 << 3; - dma_write(w, GSCR); - dma_chan_count = 16; - } else - dma_chan_count = 9; - } else if (cpu_class_is_omap2()) { - u8 revision = dma_read(REVISION) & 0xff; - printk(KERN_INFO "OMAP DMA hardware revision %d.%d\n", - revision >> 4, revision & 0xf); - dma_chan_count = dma_lch_count; - } else { - dma_chan_count = 0; - return 0; - } - spin_lock_init(&dma_chan_lock); - for (ch = 0; ch < dma_chan_count; ch++) { omap_clear_dma(ch); if (cpu_class_is_omap2()) @@ -2178,20 +2017,23 @@ static int __init omap_init_dma(void) * request_irq() doesn't like dev_id (ie. ch) being * zero, so we have to kludge around this. */ - r = request_irq(omap1_dma_irq[ch], + sprintf(&irq_name[0], "%d", ch); + dma_irq = platform_get_irq_byname(pdev, irq_name); + + if (dma_irq < 0) { + ret = dma_irq; + goto exit_dma_irq_fail; + } + + /* INT_DMA_LCD is handled in lcd_dma.c */ + if (dma_irq == INT_DMA_LCD) + continue; + + ret = request_irq(dma_irq, omap1_dma_irq_handler, 0, "DMA", (void *) (ch + 1)); - if (r != 0) { - int i; - - printk(KERN_ERR "unable to request IRQ %d " - "for DMA (error %d)\n", - omap1_dma_irq[ch], r); - for (i = 0; i < ch; i++) - free_irq(omap1_dma_irq[i], - (void *) (i + 1)); - goto out_free; - } + if (ret != 0) + goto exit_dma_irq_fail; } } @@ -2200,46 +2042,91 @@ static int __init omap_init_dma(void) DMA_DEFAULT_FIFO_DEPTH, 0); if (cpu_class_is_omap2()) { - int irq; - if (cpu_is_omap44xx()) - irq = OMAP44XX_IRQ_SDMA_0; - else - irq = INT_24XX_SDMA_IRQ0; - setup_irq(irq, &omap24xx_dma_irq); - } - - if (cpu_is_omap34xx() || cpu_is_omap44xx()) { - /* Enable smartidle idlemodes and autoidle */ - u32 v = dma_read(OCP_SYSCONFIG); - v &= ~(DMA_SYSCONFIG_MIDLEMODE_MASK | - DMA_SYSCONFIG_SIDLEMODE_MASK | - DMA_SYSCONFIG_AUTOIDLE); - v |= (DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_SMARTIDLE) | - DMA_SYSCONFIG_SIDLEMODE(DMA_IDLEMODE_SMARTIDLE) | - DMA_SYSCONFIG_AUTOIDLE); - dma_write(v , OCP_SYSCONFIG); - /* reserve dma channels 0 and 1 in high security devices */ - if (cpu_is_omap34xx() && - (omap_type() != OMAP2_DEVICE_TYPE_GP)) { - printk(KERN_INFO "Reserving DMA channels 0 and 1 for " - "HS ROM code\n"); - dma_chan[0].dev_id = 0; - dma_chan[1].dev_id = 1; + strcpy(irq_name, "0"); + dma_irq = platform_get_irq_byname(pdev, irq_name); + if (dma_irq < 0) { + dev_err(&pdev->dev, "failed: request IRQ %d", dma_irq); + goto exit_dma_lch_fail; + } + ret = setup_irq(dma_irq, &omap24xx_dma_irq); + if (ret) { + dev_err(&pdev->dev, "set_up failed for IRQ %d" + "for DMA (error %d)\n", dma_irq, ret); + goto exit_dma_lch_fail; } } + /* reserve dma channels 0 and 1 in high security devices */ + if (cpu_is_omap34xx() && + (omap_type() != OMAP2_DEVICE_TYPE_GP)) { + printk(KERN_INFO "Reserving DMA channels 0 and 1 for " + "HS ROM code\n"); + dma_chan[0].dev_id = 0; + dma_chan[1].dev_id = 1; + } + p->show_dma_caps(); return 0; -out_free: +exit_dma_irq_fail: + dev_err(&pdev->dev, "unable to request IRQ %d" + "for DMA (error %d)\n", dma_irq, ret); + for (irq_rel = 0; irq_rel < ch; irq_rel++) { + dma_irq = platform_get_irq(pdev, irq_rel); + free_irq(dma_irq, (void *)(irq_rel + 1)); + } + +exit_dma_lch_fail: + kfree(p); + kfree(d); kfree(dma_chan); + return ret; +} -out_unmap: - iounmap(omap_dma_base); +static int __devexit omap_system_dma_remove(struct platform_device *pdev) +{ + int dma_irq; - return r; + if (cpu_class_is_omap2()) { + char irq_name[4]; + strcpy(irq_name, "0"); + dma_irq = platform_get_irq_byname(pdev, irq_name); + remove_irq(dma_irq, &omap24xx_dma_irq); + } else { + int irq_rel = 0; + for ( ; irq_rel < dma_chan_count; irq_rel++) { + dma_irq = platform_get_irq(pdev, irq_rel); + free_irq(dma_irq, (void *)(irq_rel + 1)); + } + } + kfree(p); + kfree(d); + kfree(dma_chan); + return 0; +} + +static struct platform_driver omap_system_dma_driver = { + .probe = omap_system_dma_probe, + .remove = omap_system_dma_remove, + .driver = { + .name = "omap_dma_system" + }, +}; + +static int __init omap_system_dma_init(void) +{ + return platform_driver_register(&omap_system_dma_driver); +} +arch_initcall(omap_system_dma_init); + +static void __exit omap_system_dma_exit(void) +{ + platform_driver_unregister(&omap_system_dma_driver); } -arch_initcall(omap_init_dma); +MODULE_DESCRIPTION("OMAP SYSTEM DMA DRIVER"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRIVER_NAME); +MODULE_AUTHOR("Texas Instruments Inc"); /* * Reserve the omap SDMA channels using cmdline bootarg diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h index 0cce4ca..d1c916f 100644 --- a/arch/arm/plat-omap/include/plat/dma.h +++ b/arch/arm/plat-omap/include/plat/dma.h @@ -21,141 +21,15 @@ #ifndef __ASM_ARCH_DMA_H #define __ASM_ARCH_DMA_H -/* Move omap4 specific defines to dma-44xx.h */ -#include "dma-44xx.h" +#include <linux/platform_device.h> -/* Hardware registers for omap1 */ -#define OMAP1_DMA_BASE (0xfffed800) - -#define OMAP1_DMA_GCR 0x400 -#define OMAP1_DMA_GSCR 0x404 -#define OMAP1_DMA_GRST 0x408 -#define OMAP1_DMA_HW_ID 0x442 -#define OMAP1_DMA_PCH2_ID 0x444 -#define OMAP1_DMA_PCH0_ID 0x446 -#define OMAP1_DMA_PCH1_ID 0x448 -#define OMAP1_DMA_PCHG_ID 0x44a -#define OMAP1_DMA_PCHD_ID 0x44c -#define OMAP1_DMA_CAPS_0_U 0x44e -#define OMAP1_DMA_CAPS_0_L 0x450 -#define OMAP1_DMA_CAPS_1_U 0x452 -#define OMAP1_DMA_CAPS_1_L 0x454 -#define OMAP1_DMA_CAPS_2 0x456 -#define OMAP1_DMA_CAPS_3 0x458 -#define OMAP1_DMA_CAPS_4 0x45a -#define OMAP1_DMA_PCH2_SR 0x460 -#define OMAP1_DMA_PCH0_SR 0x480 -#define OMAP1_DMA_PCH1_SR 0x482 -#define OMAP1_DMA_PCHD_SR 0x4c0 - -/* Hardware registers for omap2 and omap3 */ -#define OMAP24XX_DMA4_BASE (L4_24XX_BASE + 0x56000) -#define OMAP34XX_DMA4_BASE (L4_34XX_BASE + 0x56000) -#define OMAP44XX_DMA4_BASE (L4_44XX_BASE + 0x56000) - -#define OMAP_DMA4_REVISION 0x00 -#define OMAP_DMA4_GCR 0x78 -#define OMAP_DMA4_IRQSTATUS_L0 0x08 -#define OMAP_DMA4_IRQSTATUS_L1 0x0c -#define OMAP_DMA4_IRQSTATUS_L2 0x10 -#define OMAP_DMA4_IRQSTATUS_L3 0x14 -#define OMAP_DMA4_IRQENABLE_L0 0x18 -#define OMAP_DMA4_IRQENABLE_L1 0x1c -#define OMAP_DMA4_IRQENABLE_L2 0x20 -#define OMAP_DMA4_IRQENABLE_L3 0x24 -#define OMAP_DMA4_SYSSTATUS 0x28 -#define OMAP_DMA4_OCP_SYSCONFIG 0x2c -#define OMAP_DMA4_CAPS_0 0x64 -#define OMAP_DMA4_CAPS_2 0x6c -#define OMAP_DMA4_CAPS_3 0x70 -#define OMAP_DMA4_CAPS_4 0x74 - -#define OMAP1_LOGICAL_DMA_CH_COUNT 17 -#define OMAP_DMA4_LOGICAL_DMA_CH_COUNT 32 /* REVISIT: Is this 32 + 2? */ - -/* Common channel specific registers for omap1 */ -#define OMAP1_DMA_CH_BASE(n) (0x40 * (n) + 0x00) -#define OMAP1_DMA_CSDP(n) (0x40 * (n) + 0x00) -#define OMAP1_DMA_CCR(n) (0x40 * (n) + 0x02) -#define OMAP1_DMA_CICR(n) (0x40 * (n) + 0x04) -#define OMAP1_DMA_CSR(n) (0x40 * (n) + 0x06) -#define OMAP1_DMA_CEN(n) (0x40 * (n) + 0x10) -#define OMAP1_DMA_CFN(n) (0x40 * (n) + 0x12) -#define OMAP1_DMA_CSFI(n) (0x40 * (n) + 0x14) -#define OMAP1_DMA_CSEI(n) (0x40 * (n) + 0x16) -#define OMAP1_DMA_CPC(n) (0x40 * (n) + 0x18) /* 15xx only */ -#define OMAP1_DMA_CSAC(n) (0x40 * (n) + 0x18) -#define OMAP1_DMA_CDAC(n) (0x40 * (n) + 0x1a) -#define OMAP1_DMA_CDEI(n) (0x40 * (n) + 0x1c) -#define OMAP1_DMA_CDFI(n) (0x40 * (n) + 0x1e) -#define OMAP1_DMA_CLNK_CTRL(n) (0x40 * (n) + 0x28) - -/* Common channel specific registers for omap2 */ -#define OMAP_DMA4_CH_BASE(n) (0x60 * (n) + 0x80) -#define OMAP_DMA4_CCR(n) (0x60 * (n) + 0x80) -#define OMAP_DMA4_CLNK_CTRL(n) (0x60 * (n) + 0x84) -#define OMAP_DMA4_CICR(n) (0x60 * (n) + 0x88) -#define OMAP_DMA4_CSR(n) (0x60 * (n) + 0x8c) -#define OMAP_DMA4_CSDP(n) (0x60 * (n) + 0x90) -#define OMAP_DMA4_CEN(n) (0x60 * (n) + 0x94) -#define OMAP_DMA4_CFN(n) (0x60 * (n) + 0x98) -#define OMAP_DMA4_CSEI(n) (0x60 * (n) + 0xa4) -#define OMAP_DMA4_CSFI(n) (0x60 * (n) + 0xa8) -#define OMAP_DMA4_CDEI(n) (0x60 * (n) + 0xac) -#define OMAP_DMA4_CDFI(n) (0x60 * (n) + 0xb0) -#define OMAP_DMA4_CSAC(n) (0x60 * (n) + 0xb4) -#define OMAP_DMA4_CDAC(n) (0x60 * (n) + 0xb8) - -/* Channel specific registers only on omap1 */ -#define OMAP1_DMA_CSSA_L(n) (0x40 * (n) + 0x08) -#define OMAP1_DMA_CSSA_U(n) (0x40 * (n) + 0x0a) -#define OMAP1_DMA_CDSA_L(n) (0x40 * (n) + 0x0c) -#define OMAP1_DMA_CDSA_U(n) (0x40 * (n) + 0x0e) -#define OMAP1_DMA_COLOR_L(n) (0x40 * (n) + 0x20) -#define OMAP1_DMA_COLOR_U(n) (0x40 * (n) + 0x22) -#define OMAP1_DMA_CCR2(n) (0x40 * (n) + 0x24) -#define OMAP1_DMA_LCH_CTRL(n) (0x40 * (n) + 0x2a) /* not on 15xx */ -#define OMAP1_DMA_CCEN(n) 0 -#define OMAP1_DMA_CCFN(n) 0 - -/* Channel specific registers only on omap2 */ -#define OMAP_DMA4_CSSA(n) (0x60 * (n) + 0x9c) -#define OMAP_DMA4_CDSA(n) (0x60 * (n) + 0xa0) -#define OMAP_DMA4_CCEN(n) (0x60 * (n) + 0xbc) -#define OMAP_DMA4_CCFN(n) (0x60 * (n) + 0xc0) -#define OMAP_DMA4_COLOR(n) (0x60 * (n) + 0xc4) - -/* Additional registers available on OMAP4 */ -#define OMAP_DMA4_CDP(n) (0x60 * (n) + 0xd0) -#define OMAP_DMA4_CNDP(n) (0x60 * (n) + 0xd4) -#define OMAP_DMA4_CCDN(n) (0x60 * (n) + 0xd8) - -/* Dummy defines to keep multi-omap compiles happy */ -#define OMAP1_DMA_REVISION 0 -#define OMAP1_DMA_IRQSTATUS_L0 0 -#define OMAP1_DMA_IRQENABLE_L0 0 -#define OMAP1_DMA_OCP_SYSCONFIG 0 -#define OMAP_DMA4_HW_ID 0 -#define OMAP_DMA4_CAPS_0_L 0 -#define OMAP_DMA4_CAPS_0_U 0 -#define OMAP_DMA4_CAPS_1_L 0 -#define OMAP_DMA4_CAPS_1_U 0 -#define OMAP_DMA4_GSCR 0 -#define OMAP_DMA4_CPC(n) 0 - -#define OMAP_DMA4_LCH_CTRL(n) 0 -#define OMAP_DMA4_COLOR_L(n) 0 -#define OMAP_DMA4_COLOR_U(n) 0 -#define OMAP_DMA4_CCR2(n) 0 -#define OMAP1_DMA_CSSA(n) 0 -#define OMAP1_DMA_CDSA(n) 0 -#define OMAP_DMA4_CSSA_L(n) 0 -#define OMAP_DMA4_CSSA_U(n) 0 -#define OMAP_DMA4_CDSA_L(n) 0 -#define OMAP_DMA4_CDSA_U(n) 0 -#define OMAP1_DMA_COLOR(n) 0 +/* + * TODO: These dma channel defines should go away once all + * the omap drivers hwmod adapted. + */ -/*----------------------------------------------------------------------------*/ +/* Move omap4 specific defines to dma-44xx.h */ +#include "dma-44xx.h" /* DMA channels for omap1 */ #define OMAP_DMA_NO_DEVICE 0 @@ -405,6 +279,63 @@ #define DMA_CH_PRIO_HIGH 0x1 #define DMA_CH_PRIO_LOW 0x0 /* Def */ +/* Errata handling */ +#define IS_DMA_ERRATA(id) (errata & (id)) +#define SET_DMA_ERRATA(id) (errata |= (id)) + +#define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0) +#define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1) +#define DMA_ERRATA_i378 BIT(0x2) +#define DMA_ERRATA_i541 BIT(0x3) +#define DMA_ERRATA_i88 BIT(0x4) +#define DMA_ERRATA_3_3 BIT(0x5) +#define DMA_ROMCODE_BUG BIT(0x6) + +/* Attributes for OMAP DMA Contrller */ +#define DMA_LINKED_LCH BIT(0x0) +#define GLOBAL_PRIORITY BIT(0x1) +#define RESERVE_CHANNEL BIT(0x2) +#define IS_CSSA_32 BIT(0x3) +#define IS_CDSA_32 BIT(0x4) +#define IS_RW_PRIORITY BIT(0x5) +#define ENABLE_1510_MODE BIT(0x6) +#define SRC_PORT BIT(0x7) +#define DST_PORT BIT(0x8) +#define SRC_INDEX BIT(0x9) +#define DST_INDEX BIT(0xA) +#define IS_BURST_ONLY4 BIT(0xB) +#define CLEAR_CSR_ON_READ BIT(0xC) +#define IS_WORD_16 BIT(0xD) + +enum omap_reg_offsets { + +GCR, GSCR, GRST1, HW_ID, +PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID, +PCHD_ID, CAPS_0, CAPS_1, CAPS_2, +CAPS_3, CAPS_4, PCH2_SR, PCH0_SR, +PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0, +IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0, +IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS, +OCP_SYSCONFIG, + +/* omap1+ specific */ +CPC, CCR2, LCH_CTRL, + +/* Common registers for all omap's */ +CSDP, CCR, CICR, CSR, +CEN, CFN, CSFI, CSEI, +CSAC, CDAC, CDEI, +CDFI, CLNK_CTRL, + +/* Channel specific registers */ +CSSA, CDSA, COLOR, +CCEN, CCFN, + +/* omap3630 and omap4 specific */ +CDP, CNDP, CCDN, + +}; + enum omap_dma_burst_mode { OMAP_DMA_DATA_BURST_DIS = 0, OMAP_DMA_DATA_BURST_4, @@ -470,6 +401,41 @@ struct omap_dma_channel_params { #endif }; +struct omap_dma_lch { + int next_lch; + int dev_id; + u16 saved_csr; + u16 enabled_irqs; + const char *dev_name; + void (*callback)(int lch, u16 ch_status, void *data); + void *data; + long flags; + /* required for Dynamic chaining */ + int prev_linked_ch; + int next_linked_ch; + int state; + int chain_id; + int status; +}; + +struct omap_dma_dev_attr { + u32 dev_caps; + u16 lch_count; + u16 chan_count; + struct omap_dma_lch *chan; +}; + +/* System DMA platform data structure */ +struct omap_system_dma_plat_info { + struct omap_dma_dev_attr *dma_attr; + u32 errata; + void (*disable_irq_lch)(int lch); + void (*show_dma_caps)(void); + void (*clear_lch_regs)(int lch); + void (*clear_dma)(int lch); + void (*dma_write)(u32 val, int reg, int lch); + u32 (*dma_read)(int reg, int lch); +}; extern void omap_set_dma_priority(int lch, int dst_port, int priority); extern int omap_request_dma(int dev_id, const char *dev_name, |
