mirror of https://gitee.com/openkylin/linux.git
sh: dmaengine support for SH7786 DMAC0.
Hook up DMAC0 on SH7786. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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@ -23,7 +23,8 @@
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#define CHCR_TS_HIGH_MASK 0
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#define CHCR_TS_HIGH_SHIFT 0
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#elif defined(CONFIG_CPU_SUBTYPE_SH7722) || \
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defined(CONFIG_CPU_SUBTYPE_SH7724)
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defined(CONFIG_CPU_SUBTYPE_SH7724) || \
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defined(CONFIG_CPU_SUBTYPE_SH7786)
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#define CHCR_TS_LOW_MASK 0x00000018
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#define CHCR_TS_LOW_SHIFT 3
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#define CHCR_TS_HIGH_MASK 0x00300000
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@ -1,7 +1,7 @@
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/*
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* SH7786 Setup
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*
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* Copyright (C) 2009 Renesas Solutions Corp.
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* Copyright (C) 2009 - 2010 Renesas Solutions Corp.
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* Kuninori Morimoto <morimoto.kuninori@renesas.com>
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* Paul Mundt <paul.mundt@renesas.com>
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*
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@ -21,7 +21,9 @@
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <linux/sh_timer.h>
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#include <cpu/dma-register.h>
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#include <asm/mmzone.h>
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#include <asm/dmaengine.h>
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static struct plat_sci_port scif0_platform_data = {
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.mapbase = 0xffea0000,
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@ -442,6 +444,83 @@ static struct platform_device tmu11_device = {
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.num_resources = ARRAY_SIZE(tmu11_resources),
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};
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static struct sh_dmae_channel dmac0_channels[] = {
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{
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.offset = 0,
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.dmars = 0,
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.dmars_bit = 0,
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}, {
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.offset = 0x10,
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.dmars = 0,
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.dmars_bit = 8,
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}, {
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.offset = 0x20,
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.dmars = 4,
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.dmars_bit = 0,
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}, {
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.offset = 0x30,
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.dmars = 4,
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.dmars_bit = 8,
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}, {
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.offset = 0x50,
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.dmars = 8,
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.dmars_bit = 0,
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}, {
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.offset = 0x60,
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.dmars = 8,
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.dmars_bit = 8,
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}
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};
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static unsigned int ts_shift[] = TS_SHIFT;
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static struct sh_dmae_pdata dma0_platform_data = {
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.channel = dmac0_channels,
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.channel_num = ARRAY_SIZE(dmac0_channels),
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.ts_low_shift = CHCR_TS_LOW_SHIFT,
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.ts_low_mask = CHCR_TS_LOW_MASK,
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.ts_high_shift = CHCR_TS_HIGH_SHIFT,
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.ts_high_mask = CHCR_TS_HIGH_MASK,
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.ts_shift = ts_shift,
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.ts_shift_num = ARRAY_SIZE(ts_shift),
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.dmaor_init = DMAOR_INIT,
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};
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/* Resource order important! */
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static struct resource dmac0_resources[] = {
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{
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/* Channel registers and DMAOR */
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.start = 0xfe008020,
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.end = 0xfe00808f,
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.flags = IORESOURCE_MEM,
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}, {
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/* DMARSx */
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.start = 0xfe009000,
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.end = 0xfe00900b,
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.flags = IORESOURCE_MEM,
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}, {
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/* DMA error IRQ */
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.start = evt2irq(0x5c0),
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.end = evt2irq(0x5c0),
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.flags = IORESOURCE_IRQ,
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}, {
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/* IRQ for channels 0-5 */
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.start = evt2irq(0x500),
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.end = evt2irq(0x5a0),
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device dma0_device = {
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.name = "sh-dma-engine",
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.id = 0,
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.resource = dmac0_resources,
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.num_resources = ARRAY_SIZE(dmac0_resources),
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.dev = {
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.platform_data = &dma0_platform_data,
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},
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};
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static struct resource usb_ohci_resources[] = {
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[0] = {
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.start = 0xffe70400,
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@ -489,6 +568,7 @@ static struct platform_device *sh7786_early_devices[] __initdata = {
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};
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static struct platform_device *sh7786_devices[] __initdata = {
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&dma0_device,
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&usb_ohci_device,
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};
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