@@ -20,9 +20,14 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
+#include <linux/mmc/host.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/mmc_spi.h>
+#include <linux/platform_data/video-ep93xx.h>
+#include <linux/platform_data/spi-ep93xx.h>
+#include <linux/gpio.h>
#include <mach/hardware.h>
-#include <linux/platform_data/video-ep93xx.h>
#include <mach/gpio-ep93xx.h>
#include <asm/mach-types.h>
@@ -40,6 +45,132 @@ static struct ep93xxfb_mach_info __initdata simone_fb_info = {
.flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
};
+/*
+ * GPIO lines used for MMC card detection.
+ */
+#define MMC_CARD_DETECT_GPIO EP93XX_GPIO_LINE_EGPIO0
+
+/*
+ * Up to v1.3, the Sim.One used SFRMOUT as SD card chip select, but this goes
+ * low between multi-message command blocks. From v1.4, it uses a GPIO instead.
+ * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
+ */
+#define MMC_CHIP_SELECT_GPIO EP93XX_GPIO_LINE_EGPIO1
+
+/*
+ * MMC SPI chip select GPIO handling. If you are using SFRMOUT (SFRM1) signal,
+ * you can leave these empty and pass NULL as .controller_data.
+ */
+
+static int simone_mmc_spi_setup(struct spi_device *spi)
+{
+ unsigned int gpio = MMC_CHIP_SELECT_GPIO;
+ int err;
+
+ err = gpio_request(gpio, spi->modalias);
+ if (err)
+ return err;
+
+ err = gpio_direction_output(gpio, 1);
+ if (err) {
+ gpio_free(gpio);
+ return err;
+ }
+
+ return 0;
+}
+
+static void simone_mmc_spi_cleanup(struct spi_device *spi)
+{
+ unsigned int gpio = MMC_CHIP_SELECT_GPIO;
+
+ gpio_set_value(gpio, 1);
+ gpio_direction_input(gpio);
+ gpio_free(gpio);
+}
+
+static void simone_mmc_spi_cs_control(struct spi_device *spi, int value)
+{
+ gpio_set_value(MMC_CHIP_SELECT_GPIO, value);
+}
+
+static struct ep93xx_spi_chip_ops simone_mmc_spi_ops = {
+ .setup = simone_mmc_spi_setup,
+ .cleanup = simone_mmc_spi_cleanup,
+ .cs_control = simone_mmc_spi_cs_control,
+};
+
+/*
+ * MMC card detection GPIO setup.
+ */
+
+static int simone_mmc_spi_init(struct device *dev,
+ irqreturn_t (*irq_handler)(int, void *), void *mmc)
+{
+ unsigned int gpio = MMC_CARD_DETECT_GPIO;
+ int irq, err;
+
+ err = gpio_request(gpio, dev_name(dev));
+ if (err)
+ return err;
+
+ err = gpio_direction_input(gpio);
+ if (err)
+ goto fail;
+
+ irq = gpio_to_irq(gpio);
+ if (irq < 0)
+ goto fail;
+
+ err = request_irq(irq, irq_handler, IRQF_TRIGGER_FALLING,
+ "MMC card detect", mmc);
+ if (err)
+ goto fail;
+
+ printk(KERN_INFO "%s: using irq %d for MMC card detection\n",
+ dev_name(dev), irq);
+
+ return 0;
+fail:
+ gpio_free(gpio);
+ return err;
+}
+
+static void simone_mmc_spi_exit(struct device *dev, void *mmc)
+{
+ unsigned int gpio = MMC_CARD_DETECT_GPIO;
+
+ free_irq(gpio_to_irq(gpio), mmc);
+ gpio_free(gpio);
+}
+
+static struct mmc_spi_platform_data simone_mmc_spi_data = {
+ .init = simone_mmc_spi_init,
+ .exit = simone_mmc_spi_exit,
+ .detect_delay = 500,
+ .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
+};
+
+static struct spi_board_info simone_spi_devices[] __initdata = {
+ {
+ .modalias = "mmc_spi",
+ .controller_data = &simone_mmc_spi_ops,
+ .platform_data = &simone_mmc_spi_data,
+ /*
+ * We use 10 MHz even though the maximum is 3.7 MHz. The driver
+ * will limit it automatically to max. frequency.
+ */
+ .max_speed_hz = 10 * 1000 * 1000,
+ .bus_num = 0,
+ .chip_select = 0,
+ .mode = SPI_MODE_3,
+ },
+};
+
+static struct ep93xx_spi_info simone_spi_info __initdata = {
+ .num_chipselect = ARRAY_SIZE(simone_spi_devices),
+};
+
static struct i2c_gpio_platform_data __initdata simone_i2c_gpio_data = {
.sda_pin = EP93XX_GPIO_LINE_EEDAT,
.sda_is_open_drain = 0,
@@ -74,6 +205,8 @@ static void __init simone_init_machine(void)
ep93xx_register_fb(&simone_fb_info);
ep93xx_register_i2c(&simone_i2c_gpio_data, simone_i2c_board_info,
ARRAY_SIZE(simone_i2c_board_info));
+ ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
+ ARRAY_SIZE(simone_spi_devices));
simone_register_audio();
}