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author | Paul Mundt <lethal@linux-sh.org> | 2010-04-13 10:15:56 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2010-04-13 10:15:56 +0900 |
commit | 050d4cc7029b73997d6821d89487b1f777d4873c (patch) | |
tree | 36cb245d9eb06edc4d36d34ed59a1b35cf353353 /arch/sh/kernel | |
parent | 99dc5c0ca953fb154a3c75ebc6801e0a3c2fe3fe (diff) | |
download | op-kernel-dev-050d4cc7029b73997d6821d89487b1f777d4873c.zip op-kernel-dev-050d4cc7029b73997d6821d89487b1f777d4873c.tar.gz |
sh: dmaengine support for SH7786 DMAC0.
Hook up DMAC0 on SH7786.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r-- | arch/sh/kernel/cpu/sh4a/setup-sh7786.c | 82 |
1 files changed, 81 insertions, 1 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c index f559990..61e5491 100644 --- a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c +++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c @@ -1,7 +1,7 @@ /* * SH7786 Setup * - * Copyright (C) 2009 Renesas Solutions Corp. + * Copyright (C) 2009 - 2010 Renesas Solutions Corp. * Kuninori Morimoto <morimoto.kuninori@renesas.com> * Paul Mundt <paul.mundt@renesas.com> * @@ -21,7 +21,9 @@ #include <linux/mm.h> #include <linux/dma-mapping.h> #include <linux/sh_timer.h> +#include <cpu/dma-register.h> #include <asm/mmzone.h> +#include <asm/dmaengine.h> static struct plat_sci_port scif0_platform_data = { .mapbase = 0xffea0000, @@ -442,6 +444,83 @@ static struct platform_device tmu11_device = { .num_resources = ARRAY_SIZE(tmu11_resources), }; +static struct sh_dmae_channel dmac0_channels[] = { + { + .offset = 0, + .dmars = 0, + .dmars_bit = 0, + }, { + .offset = 0x10, + .dmars = 0, + .dmars_bit = 8, + }, { + .offset = 0x20, + .dmars = 4, + .dmars_bit = 0, + }, { + .offset = 0x30, + .dmars = 4, + .dmars_bit = 8, + }, { + .offset = 0x50, + .dmars = 8, + .dmars_bit = 0, + }, { + .offset = 0x60, + .dmars = 8, + .dmars_bit = 8, + } +}; + +static unsigned int ts_shift[] = TS_SHIFT; + +static struct sh_dmae_pdata dma0_platform_data = { + .channel = dmac0_channels, + .channel_num = ARRAY_SIZE(dmac0_channels), + .ts_low_shift = CHCR_TS_LOW_SHIFT, + .ts_low_mask = CHCR_TS_LOW_MASK, + .ts_high_shift = CHCR_TS_HIGH_SHIFT, + .ts_high_mask = CHCR_TS_HIGH_MASK, + .ts_shift = ts_shift, + .ts_shift_num = ARRAY_SIZE(ts_shift), + .dmaor_init = DMAOR_INIT, +}; + +/* Resource order important! */ +static struct resource dmac0_resources[] = { + { + /* Channel registers and DMAOR */ + .start = 0xfe008020, + .end = 0xfe00808f, + .flags = IORESOURCE_MEM, + }, { + /* DMARSx */ + .start = 0xfe009000, + .end = 0xfe00900b, + .flags = IORESOURCE_MEM, + }, { + /* DMA error IRQ */ + .start = evt2irq(0x5c0), + .end = evt2irq(0x5c0), + .flags = IORESOURCE_IRQ, + }, { + /* IRQ for channels 0-5 */ + .start = evt2irq(0x500), + .end = evt2irq(0x5a0), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dma0_device = { + .name = "sh-dma-engine", + .id = 0, + .resource = dmac0_resources, + .num_resources = ARRAY_SIZE(dmac0_resources), + .dev = { + .platform_data = &dma0_platform_data, + }, +}; + static struct resource usb_ohci_resources[] = { [0] = { .start = 0xffe70400, @@ -489,6 +568,7 @@ static struct platform_device *sh7786_early_devices[] __initdata = { }; static struct platform_device *sh7786_devices[] __initdata = { + &dma0_device, &usb_ohci_device, }; |