From: Bridge Wu Date: Fri, 21 Dec 2007 11:00:13 +0000 (+0800) Subject: [ARM] pxa: mmc: add 1st host controller support for pxa3xx X-Git-Tag: v2.6.25-rc1~1175^2^2~33 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fafc9d3fa35530c1a14e6743c477d7398b431e74;hp=8f58de7c3932f659fff3b4e5fc14ca8ccf8ec873;p=linux-2.6 [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 --- diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c index 75949eb3b7..202d048f1c 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 c0483c3261..6271af303c 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 743a87b2fa..f72f37f6ff 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 1832bc3165..cad92d480f 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 94c715808b..593f7bffb3 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 748c7706f2..f6c2e2fcce 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 f58b59162b..5f717d64ea 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;