From 64eb036af42d3816364c4db49d93be3a4614389c Mon Sep 17 00:00:00 2001 From: Bridge Wu Date: Thu, 13 Dec 2007 07:24:30 +0100 Subject: [ARM] 4709/1: pxa: mmc: add 26MHz support for pxa3[0|1]0 mmc controller pxa3[0|1]0 mmc controller can support 26MHz clock mode, they support SD spec 1.1 and MMC spec 4.0 which specify high speed mode. So host caps will include MMC_CAP_MMC_HIGHSPEED and MMC_CAP_SD_HIGHSPEED for pxa3[0|1]0. This patch is to add 26MHz support for them. pxa host clock will be set to 26MHz mode when the card supported max clock rate is higher than or equal to 26MHz. Signed-off-by: Bridge Wu Acked-by: Pierre Ossman Signed-off-by: Russell King --- drivers/mmc/host/pxamci.c | 31 ++++++++++++++++++++++--------- 1 file changed, 22 insertions(+), 9 deletions(-) (limited to 'drivers/mmc') diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index 1654a3330340..80df4b047c81 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -375,14 +375,23 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (host->clkrt == CLKRT_OFF) clk_enable(host->clk); - /* - * clk might result in a lower divisor than we - * desire. check for that condition and adjust - * as appropriate. - */ - if (rate / clk > ios->clock) - clk <<= 1; - host->clkrt = fls(clk) - 1; + if (ios->clock == 26000000) { + /* to support 26MHz on pxa300/pxa310 */ + host->clkrt = 7; + } else { + /* to handle (19.5MHz, 26MHz) */ + if (!clk) + clk = 1; + + /* + * clk might result in a lower divisor than we + * desire. check for that condition and adjust + * as appropriate. + */ + if (rate / clk > ios->clock) + clk <<= 1; + host->clkrt = fls(clk) - 1; + } /* * we write clkrt on the next command @@ -519,7 +528,8 @@ static int pxamci_probe(struct platform_device *pdev) * Calculate minimum clock rate, rounding up. */ mmc->f_min = (host->clkrate + 63) / 64; - mmc->f_max = host->clkrate; + mmc->f_max = (cpu_is_pxa300() || cpu_is_pxa310()) ? 26000000 + : host->clkrate; mmc->ocr_avail = host->pdata ? host->pdata->ocr_mask : @@ -529,6 +539,9 @@ static int pxamci_probe(struct platform_device *pdev) if (!cpu_is_pxa21x() && !cpu_is_pxa25x()) { mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; host->cmdat |= CMDAT_SDIO_INT_EN; + if (cpu_is_pxa300() || cpu_is_pxa310()) + mmc->caps |= MMC_CAP_MMC_HIGHSPEED | + MMC_CAP_SD_HIGHSPEED; } host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL); -- cgit v1.2.3 From 9a788c6b78802b4a378be3f0d4c2da30da811620 Mon Sep 17 00:00:00 2001 From: Bridge Wu Date: Fri, 14 Dec 2007 10:40:25 +0100 Subject: [ARM] 4711/1: pxa: mmc: move DMA specific code to platform layer This patch is to move pxamci DMA specific code to corresponding platform layer because using DRCMRRXMMC/DRCMRTXMMC in pxamci.c makes the driver code dedicated to platform which is not extensible. It is applicable to all pxa platforms. Signed-off-by: Bridge Wu Signed-off-by: Russell King --- arch/arm/mach-pxa/generic.c | 10 ++++++++++ drivers/mmc/host/pxamci.c | 30 +++++++++++++++++++++++------- 2 files changed, 33 insertions(+), 7 deletions(-) (limited to 'drivers/mmc') diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 8bb70e70131e..a8d88704c8d4 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -259,6 +259,16 @@ static struct resource pxamci_resources[] = { .end = IRQ_MMC, .flags = IORESOURCE_IRQ, }, + [2] = { + .start = 21, + .end = 21, + .flags = IORESOURCE_DMA, + }, + [3] = { + .start = 22, + .end = 22, + .flags = IORESOURCE_DMA, + }, }; static u64 pxamci_dmamask = 0xffffffffUL; diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index 80df4b047c81..1ea8482037bb 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -65,6 +65,8 @@ struct pxamci_host { unsigned int dma_len; unsigned int dma_dir; + unsigned int dma_drcmrrx; + unsigned int dma_drcmrtx; }; static void pxamci_stop_clock(struct pxamci_host *host) @@ -131,13 +133,13 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) { host->dma_dir = DMA_FROM_DEVICE; dcmd = DCMD_INCTRGADDR | DCMD_FLOWTRG; - DRCMRTXMMC = 0; - DRCMRRXMMC = host->dma | DRCMR_MAPVLD; + DRCMR(host->dma_drcmrtx) = 0; + DRCMR(host->dma_drcmrrx) = host->dma | DRCMR_MAPVLD; } else { host->dma_dir = DMA_TO_DEVICE; dcmd = DCMD_INCSRCADDR | DCMD_FLOWSRC; - DRCMRRXMMC = 0; - DRCMRTXMMC = host->dma | DRCMR_MAPVLD; + DRCMR(host->dma_drcmrrx) = 0; + DRCMR(host->dma_drcmrtx) = host->dma | DRCMR_MAPVLD; } dcmd |= DCMD_BURST32 | DCMD_WIDTH1; @@ -468,7 +470,7 @@ static int pxamci_probe(struct platform_device *pdev) { struct mmc_host *mmc; struct pxamci_host *host = NULL; - struct resource *r; + struct resource *r, *dmarx, *dmatx; int ret, irq; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -583,6 +585,20 @@ static int pxamci_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mmc); + dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0); + if (!dmarx) { + ret = -ENXIO; + goto out; + } + host->dma_drcmrrx = dmarx->start; + + dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1); + if (!dmatx) { + ret = -ENXIO; + goto out; + } + host->dma_drcmrtx = dmatx->start; + if (host->pdata && host->pdata->init) host->pdata->init(&pdev->dev, pxamci_detect_irq, mmc); @@ -626,8 +642,8 @@ static int pxamci_remove(struct platform_device *pdev) END_CMD_RES|PRG_DONE|DATA_TRAN_DONE, host->base + MMC_I_MASK); - DRCMRRXMMC = 0; - DRCMRTXMMC = 0; + DRCMR(host->dma_drcmrrx) = 0; + DRCMR(host->dma_drcmrtx) = 0; free_irq(host->irq, host); pxa_free_dma(host->dma); -- cgit v1.2.3 From fafc9d3fa35530c1a14e6743c477d7398b431e74 Mon Sep 17 00:00:00 2001 From: Bridge Wu Date: Fri, 21 Dec 2007 19:00:13 +0800 Subject: [ARM] pxa: mmc: add 1st host controller support for pxa3xx This patchis to add the first mmc controller support for pxa3xx. It's valid for pxa3[0|1|2]0. On zylonite, the first controller supports two slots, this patch only support the first one right now. Signed-off-by: Bridge Wu Signed-off-by: Russell King --- arch/arm/mach-pxa/devices.c | 2 +- arch/arm/mach-pxa/pxa3xx.c | 2 + arch/arm/mach-pxa/zylonite.c | 86 +++++++++++++++++++++++++++++++++++++ arch/arm/mach-pxa/zylonite_pxa300.c | 13 ++++++ arch/arm/mach-pxa/zylonite_pxa320.c | 13 ++++++ drivers/mmc/host/pxamci.h | 2 +- include/asm-arm/arch-pxa/zylonite.h | 9 ++++ 7 files changed, 125 insertions(+), 2 deletions(-) (limited to 'drivers/mmc') diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c index 75949eb3b7bd..202d048f1cdd 100644 --- a/arch/arm/mach-pxa/devices.c +++ b/arch/arm/mach-pxa/devices.c @@ -51,7 +51,7 @@ static u64 pxamci_dmamask = 0xffffffffUL; struct platform_device pxa_device_mci = { .name = "pxa2xx-mci", - .id = -1, + .id = 0, .dev = { .dma_mask = &pxamci_dmamask, .coherent_dma_mask = 0xffffffff, diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c index c0483c3261d0..6271af303cb9 100644 --- a/arch/arm/mach-pxa/pxa3xx.c +++ b/arch/arm/mach-pxa/pxa3xx.c @@ -194,6 +194,8 @@ static struct clk pxa3xx_clks[] = { PXA3xx_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev), PXA3xx_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev), PXA3xx_CKEN("SSPCLK", SSP4, 13000000, 0, &pxa3xx_device_ssp4.dev), + + PXA3xx_CKEN("MMCCLK", MMC1, 19500000, 0, &pxa_device_mci.dev), }; void __init pxa3xx_init_irq(void) diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c index 743a87b2faa1..f72f37f6ff0c 100644 --- a/arch/arm/mach-pxa/zylonite.c +++ b/arch/arm/mach-pxa/zylonite.c @@ -25,9 +25,13 @@ #include #include #include +#include #include "generic.h" +#define MAX_SLOTS 2 +struct platform_mmc_slot zylonite_mmc_slot[MAX_SLOTS]; + int gpio_backlight; int gpio_eth_irq; @@ -156,6 +160,87 @@ static void __init zylonite_init_lcd(void) static inline void zylonite_init_lcd(void) {} #endif +#if defined(CONFIG_MMC) +static int zylonite_mci_ro(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + + return gpio_get_value(zylonite_mmc_slot[pdev->id].gpio_wp); +} + +static int zylonite_mci_init(struct device *dev, + irq_handler_t zylonite_detect_int, + void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + int err, cd_irq, gpio_cd, gpio_wp; + + cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd); + gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd; + gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp; + + /* + * setup GPIO for Zylonite MMC controller + */ + err = gpio_request(gpio_cd, "mmc card detect"); + if (err) + goto err_request_cd; + gpio_direction_input(gpio_cd); + + err = gpio_request(gpio_wp, "mmc write protect"); + if (err) + goto err_request_wp; + gpio_direction_input(gpio_wp); + + err = request_irq(cd_irq, zylonite_detect_int, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "MMC card detect", data); + if (err) { + printk(KERN_ERR "%s: MMC/SD/SDIO: " + "can't request card detect IRQ\n", __func__); + goto err_request_irq; + } + + return 0; + +err_request_irq: + gpio_free(gpio_wp); +err_request_wp: + gpio_free(gpio_cd); +err_request_cd: + return err; +} + +static void zylonite_mci_exit(struct device *dev, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + int cd_irq, gpio_cd, gpio_wp; + + cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd); + gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd; + gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp; + + free_irq(cd_irq, data); + gpio_free(gpio_cd); + gpio_free(gpio_wp); +} + +static struct pxamci_platform_data zylonite_mci_platform_data = { + .detect_delay = 20, + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, + .init = zylonite_mci_init, + .exit = zylonite_mci_exit, + .get_ro = zylonite_mci_ro, +}; + +static void __init zylonite_init_mmc(void) +{ + pxa_set_mci_info(&zylonite_mci_platform_data); +} +#else +static inline void zylonite_init_mmc(void) {} +#endif + static void __init zylonite_init(void) { /* board-processor specific initialization */ @@ -171,6 +256,7 @@ static void __init zylonite_init(void) platform_device_register(&smc91x_device); zylonite_init_lcd(); + zylonite_init_mmc(); } MACHINE_START(ZYLONITE, "PXA3xx Platform Development Kit (aka Zylonite)") diff --git a/arch/arm/mach-pxa/zylonite_pxa300.c b/arch/arm/mach-pxa/zylonite_pxa300.c index 1832bc316501..cad92d480f2a 100644 --- a/arch/arm/mach-pxa/zylonite_pxa300.c +++ b/arch/arm/mach-pxa/zylonite_pxa300.c @@ -88,6 +88,15 @@ static mfp_cfg_t common_mfp_cfg[] __initdata = { GPIO4_2_KP_MKOUT_5, GPIO5_2_KP_MKOUT_6, GPIO6_2_KP_MKOUT_7, + + /* MMC1 */ + GPIO3_MMC1_DAT0, + GPIO4_MMC1_DAT1, + GPIO5_MMC1_DAT2, + GPIO6_MMC1_DAT3, + GPIO7_MMC1_CLK, + GPIO8_MMC1_CMD, /* CMD0 for slot 0 */ + GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */ }; static mfp_cfg_t pxa300_mfp_cfg[] __initdata = { @@ -174,6 +183,10 @@ void __init zylonite_pxa300_init(void) /* GPIO pin assignment */ gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20); + + /* MMC card detect & write protect for controller 0 */ + zylonite_mmc_slot[0].gpio_cd = EXT_GPIO(0); + zylonite_mmc_slot[0].gpio_wp = EXT_GPIO(2); } if (cpu_is_pxa300()) { diff --git a/arch/arm/mach-pxa/zylonite_pxa320.c b/arch/arm/mach-pxa/zylonite_pxa320.c index 94c715808b59..593f7bffb3b4 100644 --- a/arch/arm/mach-pxa/zylonite_pxa320.c +++ b/arch/arm/mach-pxa/zylonite_pxa320.c @@ -95,6 +95,15 @@ static mfp_cfg_t mfp_cfg[] __initdata = { /* Ethernet */ GPIO4_nCS3, GPIO90_GPIO, + + /* MMC1 */ + GPIO18_MMC1_DAT0, + GPIO19_MMC1_DAT1, + GPIO20_MMC1_DAT2, + GPIO21_MMC1_DAT3, + GPIO22_MMC1_CLK, + GPIO23_MMC1_CMD,/* CMD0 for slot 0 */ + GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */ }; #define NUM_LCD_DETECT_PINS 7 @@ -169,5 +178,9 @@ void __init zylonite_pxa320_init(void) /* GPIO pin assignment */ gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14); gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9); + + /* MMC card detect & write protect for controller 0 */ + zylonite_mmc_slot[0].gpio_cd = mfp_to_gpio(MFP_PIN_GPIO1); + zylonite_mmc_slot[0].gpio_wp = mfp_to_gpio(MFP_PIN_GPIO5); } } diff --git a/drivers/mmc/host/pxamci.h b/drivers/mmc/host/pxamci.h index 748c7706f237..f6c2e2fcce37 100644 --- a/drivers/mmc/host/pxamci.h +++ b/drivers/mmc/host/pxamci.h @@ -68,7 +68,7 @@ #define PRG_DONE (1 << 1) #define DATA_TRAN_DONE (1 << 0) -#ifdef CONFIG_PXA27x +#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx) #define MMC_I_MASK_ALL 0x00001fff #else #define MMC_I_MASK_ALL 0x0000007f diff --git a/include/asm-arm/arch-pxa/zylonite.h b/include/asm-arm/arch-pxa/zylonite.h index f58b59162b82..5f717d64ea7d 100644 --- a/include/asm-arm/arch-pxa/zylonite.h +++ b/include/asm-arm/arch-pxa/zylonite.h @@ -3,9 +3,18 @@ #define ZYLONITE_ETH_PHYS 0x14000000 +#define EXT_GPIO(x) (128 + (x)) + /* the following variables are processor specific and initialized * by the corresponding zylonite_pxa3xx_init() */ +struct platform_mmc_slot { + int gpio_cd; + int gpio_wp; +}; + +extern struct platform_mmc_slot zylonite_mmc_slot[]; + extern int gpio_backlight; extern int gpio_eth_irq; -- cgit v1.2.3