[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 <bridge.wu@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index 75949eb..202d048 100644 (file)
--- 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 c0483c3..6271af3 100644 (file)
--- 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 743a87b..f72f37f 100644 (file)
--- a/arch/arm/mach-pxa/zylonite.c
+++ b/arch/arm/mach-pxa/zylonite.c
@@ -25,9 +25,13 @@
 #include <asm/arch/gpio.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/zylonite.h>
+#include <asm/arch/mmc.h>
 
 #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 1832bc3..cad92d4 100644 (file)
--- 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 94c7158..593f7bf 100644 (file)
--- 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 748c770..f6c2e2f 100644 (file)
--- 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 f58b591..5f717d6 100644 (file)
--- 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;