[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/zylonite.c b/arch/arm/mach-pxa/zylonite.c
index 743a87b..f72f37f 100644
--- 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 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 @@
platform_device_register(&smc91x_device);
zylonite_init_lcd();
+ zylonite_init_mmc();
}
MACHINE_START(ZYLONITE, "PXA3xx Platform Development Kit (aka Zylonite)")