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Subject[patch 3/6] xtensa: add spi mmc host to s6105 platform
Date
Signed-off-by: Daniel Glöckner <dg@emlix.com>
---
arch/xtensa/platforms/s6105/device.c | 55 ++++++++++++++++++++++++++++++++++
1 files changed, 55 insertions(+), 0 deletions(-)

diff --git a/arch/xtensa/platforms/s6105/device.c b/arch/xtensa/platforms/s6105/device.c
index a7ea916..789448e 100644
--- a/arch/xtensa/platforms/s6105/device.c
+++ b/arch/xtensa/platforms/s6105/device.c
@@ -11,9 +11,11 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/phy.h>
+#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
+#include <linux/spi/mmc_spi.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_s6000.h>

@@ -209,7 +211,60 @@ static __devinitdata struct s6_spi_platform_data s6_spi_pdata = {
#define S6_SPI_CS_EXPANSION 3
#define S6_SPI_CS_MMC_SLOT 4

+static int __devinit s6_init_mmc_host(struct device *spi,
+ irqreturn_t (*handler)(int, void *),
+ void *mmc)
+{
+ int ret;
+ ret = gpio_request(GPIO_SD_WP, "mmc_wp");
+ if (ret < 0)
+ return ret;
+ ret = gpio_request(GPIO_SD_IRQ, "mmc_irq");
+ if (ret < 0)
+ return ret;
+ ret = gpio_direction_input(GPIO_SD_WP);
+ if (ret < 0)
+ return ret;
+ ret = gpio_direction_input(GPIO_SD_IRQ);
+ if (ret < 0)
+ return ret;
+ ret = gpio_to_irq(GPIO_SD_IRQ);
+ if (ret < 0)
+ return ret;
+ ret = request_irq(ret, handler,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "mmc_slot", mmc);
+ return ret;
+}
+
+static void __devexit s6_exit_mmc_host(struct device *spi, void *mmc)
+{
+ free_irq(gpio_to_irq(GPIO_SD_IRQ), mmc);
+ gpio_free(GPIO_SD_IRQ);
+ gpio_free(GPIO_SD_WP);
+}
+
+static int s6_mmc_get_ro(struct device *spi)
+{
+ return gpio_get_value(GPIO_SD_WP);
+}
+
+static struct mmc_spi_platform_data s6_spi_mmc_pdata = {
+ .caps = 0,
+ .ocr_mask = MMC_VDD_32_33,
+ .init = s6_init_mmc_host,
+ .exit = __devexit_p(s6_exit_mmc_host),
+ .get_ro = s6_mmc_get_ro,
+};
+
static struct spi_board_info __initdata s6_spi_devices[] = {
+ {
+ .modalias = "mmc_spi",
+ .platform_data = &s6_spi_mmc_pdata,
+ .bus_num = S6_SPI_BUS_NUM,
+ .chip_select = S6_SPI_CS_MMC_SLOT,
+ .max_speed_hz = 50000000,
+ },
};

static struct platform_device platform_devices[] = {
--
1.6.2.107.ge47ee
--
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