From f48c8c958a2d39f13dace880d15a6e711aafe577 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Thu, 23 Apr 2009 00:40:31 +0900 Subject: [PATCH] MIPS: TXx9: Add DMAC support Add platform support for DMAC of TXx9 SoCs. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/include/asm/txx9/dmac.h | 3 ++ arch/mips/include/asm/txx9/tx4927.h | 2 + arch/mips/include/asm/txx9/tx4938.h | 1 + arch/mips/include/asm/txx9/tx4939.h | 1 + arch/mips/txx9/generic/setup.c | 55 +++++++++++++++++++++++++++ arch/mips/txx9/generic/setup_tx4927.c | 12 ++++++ arch/mips/txx9/generic/setup_tx4938.c | 21 +++++++--- arch/mips/txx9/generic/setup_tx4939.c | 21 +++++++--- arch/mips/txx9/rbtx4927/setup.c | 4 ++ arch/mips/txx9/rbtx4938/setup.c | 1 + arch/mips/txx9/rbtx4939/setup.c | 1 + 11 files changed, 112 insertions(+), 10 deletions(-) diff --git a/arch/mips/include/asm/txx9/dmac.h b/arch/mips/include/asm/txx9/dmac.h index a87d1c3e4f5..5e9151fccbb 100644 --- a/arch/mips/include/asm/txx9/dmac.h +++ b/arch/mips/include/asm/txx9/dmac.h @@ -45,4 +45,7 @@ struct txx9dmac_slave { unsigned int reg_width; }; +void txx9_dmac_init(int id, unsigned long baseaddr, int irq, + const struct txx9dmac_platform_data *pdata); + #endif /* __ASM_TXX9_DMAC_H */ diff --git a/arch/mips/include/asm/txx9/tx4927.h b/arch/mips/include/asm/txx9/tx4927.h index 7d813f1cb98..d92ae07000d 100644 --- a/arch/mips/include/asm/txx9/tx4927.h +++ b/arch/mips/include/asm/txx9/tx4927.h @@ -41,6 +41,7 @@ #define TX4927_SDRAMC_REG (TX4927_REG_BASE + 0x8000) #define TX4927_EBUSC_REG (TX4927_REG_BASE + 0x9000) +#define TX4927_DMA_REG (TX4927_REG_BASE + 0xb000) #define TX4927_PCIC_REG (TX4927_REG_BASE + 0xd000) #define TX4927_CCFG_REG (TX4927_REG_BASE + 0xe000) #define TX4927_IRC_REG (TX4927_REG_BASE + 0xf600) @@ -265,5 +266,6 @@ int tx4927_pciclk66_setup(void); void tx4927_setup_pcierr_irq(void); void tx4927_irq_init(void); void tx4927_mtd_init(int ch); +void tx4927_dmac_init(int memcpy_chan); #endif /* __ASM_TXX9_TX4927_H */ diff --git a/arch/mips/include/asm/txx9/tx4938.h b/arch/mips/include/asm/txx9/tx4938.h index cd8bc202175..0758a0c411b 100644 --- a/arch/mips/include/asm/txx9/tx4938.h +++ b/arch/mips/include/asm/txx9/tx4938.h @@ -305,5 +305,6 @@ struct tx4938ide_platform_info { }; void tx4938_ata_init(unsigned int irq, unsigned int shift, int tune); +void tx4938_dmac_init(int memcpy_chan0, int memcpy_chan1); #endif diff --git a/arch/mips/include/asm/txx9/tx4939.h b/arch/mips/include/asm/txx9/tx4939.h index f02c50b3abf..1be9798a26b 100644 --- a/arch/mips/include/asm/txx9/tx4939.h +++ b/arch/mips/include/asm/txx9/tx4939.h @@ -544,5 +544,6 @@ void tx4939_ata_init(void); void tx4939_rtc_init(void); void tx4939_ndfmc_init(unsigned int hold, unsigned int spw, unsigned char ch_mask, unsigned char wide_mask); +void tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1); #endif /* __ASM_TXX9_TX4939_H */ diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index 8a266c6a3f5..369d8637217 100644 --- a/arch/mips/txx9/generic/setup.c +++ b/arch/mips/txx9/generic/setup.c @@ -33,6 +33,7 @@ #include #include #include +#include #ifdef CONFIG_CPU_TX49XX #include #endif @@ -821,3 +822,57 @@ void __init txx9_iocled_init(unsigned long baseaddr, { } #endif /* CONFIG_LEDS_GPIO */ + +void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq, + const struct txx9dmac_platform_data *pdata) +{ +#if defined(CONFIG_TXX9_DMAC) || defined(CONFIG_TXX9_DMAC_MODULE) + struct resource res[] = { + { + .start = baseaddr, + .end = baseaddr + 0x800 - 1, + .flags = IORESOURCE_MEM, +#ifndef CONFIG_MACH_TX49XX + }, { + .start = irq, + .flags = IORESOURCE_IRQ, +#endif + } + }; +#ifdef CONFIG_MACH_TX49XX + struct resource chan_res[] = { + { + .flags = IORESOURCE_IRQ, + } + }; +#endif + struct platform_device *pdev = platform_device_alloc("txx9dmac", id); + struct txx9dmac_chan_platform_data cpdata; + int i; + + if (!pdev || + platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || + platform_device_add_data(pdev, pdata, sizeof(*pdata)) || + platform_device_add(pdev)) { + platform_device_put(pdev); + return; + } + memset(&cpdata, 0, sizeof(cpdata)); + cpdata.dmac_dev = pdev; + for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) { +#ifdef CONFIG_MACH_TX49XX + chan_res[0].start = irq + i; +#endif + pdev = platform_device_alloc("txx9dmac-chan", + id * TXX9_DMA_MAX_NR_CHANNELS + i); + if (!pdev || +#ifdef CONFIG_MACH_TX49XX + platform_device_add_resources(pdev, chan_res, + ARRAY_SIZE(chan_res)) || +#endif + platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) || + platform_device_add(pdev)) + platform_device_put(pdev); + } +#endif +} diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c index 1093549df1a..6b681cd7f8f 100644 --- a/arch/mips/txx9/generic/setup_tx4927.c +++ b/arch/mips/txx9/generic/setup_tx4927.c @@ -22,6 +22,7 @@ #include #include #include +#include #include static void __init tx4927_wdr_init(void) @@ -253,6 +254,17 @@ void __init tx4927_mtd_init(int ch) txx9_physmap_flash_init(ch, start, size, &pdata); } +void __init tx4927_dmac_init(int memcpy_chan) +{ + struct txx9dmac_platform_data plat_data = { + .memcpy_chan = memcpy_chan, + .have_64bit_regs = true, + }; + + txx9_dmac_init(0, TX4927_DMA_REG & 0xfffffffffULL, + TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data); +} + static void __init tx4927_stop_unused_modules(void) { __u64 pcfg, rst = 0, ckd = 0; diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c index 3925219b897..b2b85293cd4 100644 --- a/arch/mips/txx9/generic/setup_tx4938.c +++ b/arch/mips/txx9/generic/setup_tx4938.c @@ -24,6 +24,7 @@ #include #include #include +#include #include static void __init tx4938_wdr_init(void) @@ -239,11 +240,6 @@ void __init tx4938_setup(void) for (i = 0; i < TX4938_NR_TMR; i++) txx9_tmr_init(TX4938_TMR_REG(i) & 0xfffffffffULL); - /* DMA */ - for (i = 0; i < 2; i++) - ____raw_writeq(TX4938_DMA_MCR_MSTEN, - (void __iomem *)(TX4938_DMA_REG(i) + 0x50)); - /* PIO */ txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, TX4938_NUM_PIO); __raw_writel(0, &tx4938_pioptr->maskcpu); @@ -403,6 +399,21 @@ void __init tx4938_ndfmc_init(unsigned int hold, unsigned int spw) txx9_ndfmc_init(baseaddr, &plat_data); } +void __init tx4938_dmac_init(int memcpy_chan0, int memcpy_chan1) +{ + struct txx9dmac_platform_data plat_data = { + .have_64bit_regs = true, + }; + int i; + + for (i = 0; i < 2; i++) { + plat_data.memcpy_chan = i ? memcpy_chan1 : memcpy_chan0; + txx9_dmac_init(i, TX4938_DMA_REG(i) & 0xfffffffffULL, + TXX9_IRQ_BASE + TX4938_IR_DMA(i, 0), + &plat_data); + } +} + static void __init tx4938_stop_unused_modules(void) { __u64 pcfg, rst = 0, ckd = 0; diff --git a/arch/mips/txx9/generic/setup_tx4939.c b/arch/mips/txx9/generic/setup_tx4939.c index c2bf150c883..98effef64fd 100644 --- a/arch/mips/txx9/generic/setup_tx4939.c +++ b/arch/mips/txx9/generic/setup_tx4939.c @@ -28,6 +28,7 @@ #include #include #include +#include #include static void __init tx4939_wdr_init(void) @@ -259,11 +260,6 @@ void __init tx4939_setup(void) for (i = 0; i < TX4939_NR_TMR; i++) txx9_tmr_init(TX4939_TMR_REG(i) & 0xfffffffffULL); - /* DMA */ - for (i = 0; i < 2; i++) - ____raw_writeq(TX4938_DMA_MCR_MSTEN, - (void __iomem *)(TX4939_DMA_REG(i) + 0x50)); - /* set PCIC1 reset (required to prevent hangup on BIST) */ txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1RST); pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg); @@ -474,6 +470,21 @@ void __init tx4939_ndfmc_init(unsigned int hold, unsigned int spw, txx9_ndfmc_init(TX4939_NDFMC_REG & 0xfffffffffULL, &plat_data); } +void __init tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1) +{ + struct txx9dmac_platform_data plat_data = { + .have_64bit_regs = true, + }; + int i; + + for (i = 0; i < 2; i++) { + plat_data.memcpy_chan = i ? memcpy_chan1 : memcpy_chan0; + txx9_dmac_init(i, TX4939_DMA_REG(i) & 0xfffffffffULL, + TXX9_IRQ_BASE + TX4939_IR_DMA(i, 0), + &plat_data); + } +} + static void __init tx4939_stop_unused_modules(void) { __u64 pcfg, rst = 0, ckd = 0; diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c index 01129a9d50f..332cdbc7fce 100644 --- a/arch/mips/txx9/rbtx4927/setup.c +++ b/arch/mips/txx9/rbtx4927/setup.c @@ -337,6 +337,10 @@ static void __init rbtx4927_device_init(void) rbtx4927_ne_init(); tx4927_wdt_init(); rbtx4927_mtd_init(); + if (TX4927_REV_PCODE() == 0x4927) + tx4927_dmac_init(2); + else + tx4938_dmac_init(0, 2); txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL); rbtx4927_gpioled_init(); } diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c index 65d13df8878..37c5e3d2028 100644 --- a/arch/mips/txx9/rbtx4938/setup.c +++ b/arch/mips/txx9/rbtx4938/setup.c @@ -355,6 +355,7 @@ static void __init rbtx4938_device_init(void) /* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */ tx4938_ndfmc_init(10, 35); tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1); + tx4938_dmac_init(0, 2); txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL); } diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c index 4199c6fd4d1..91f2ec8fa27 100644 --- a/arch/mips/txx9/rbtx4939/setup.c +++ b/arch/mips/txx9/rbtx4939/setup.c @@ -498,6 +498,7 @@ static void __init rbtx4939_device_init(void) tx4939_wdt_init(); tx4939_ata_init(); tx4939_rtc_init(); + tx4939_dmac_init(0, 2); } static void __init rbtx4939_setup(void) -- 2.32.0.93.g670b81a890