[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>

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,

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)

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)")

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()) {

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);
 	}
 }

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

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;