diff options
Diffstat (limited to 'target/linux/ep93xx/patches-2.6.39/004-simone_add_mmc_spi.patch')
| -rw-r--r-- | target/linux/ep93xx/patches-2.6.39/004-simone_add_mmc_spi.patch | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/target/linux/ep93xx/patches-2.6.39/004-simone_add_mmc_spi.patch b/target/linux/ep93xx/patches-2.6.39/004-simone_add_mmc_spi.patch deleted file mode 100644 index 511d012b86..0000000000 --- a/target/linux/ep93xx/patches-2.6.39/004-simone_add_mmc_spi.patch +++ /dev/null @@ -1,179 +0,0 @@ -This enables the mmc-over-spi driver for the Sim.One board, based on Mika's -patch, which used a GPIO for chip select in stead of the default SFRMOUT pin. -I've modified it to use the usual SFRMOUT; if you've modified your Sim.One -board to use a GPIO instead, uncomment and modify -// #define MMC_CHIP_SELECT_GPIO EP93XX_GPIO_LINE_EGPIO15 -in the source file. - -martinwguy, 14 May 2010 - -From: Mika Westerberg <mika.westerberg@iki.fi> -Date: Wed, 28 Apr 2010 08:42:46 +0300 -Subject: [PATCH] ep93xx: simone: added board specific SPI support for MMC/SD cards - -This includes setting up EGPIOs 0 and 9 for card detection and chip select -respectively. - ---- a/arch/arm/mach-ep93xx/simone.c -+++ b/arch/arm/mach-ep93xx/simone.c -@@ -18,12 +18,16 @@ - #include <linux/kernel.h> - #include <linux/init.h> - #include <linux/platform_device.h> -+#include <linux/mmc/host.h> - #include <linux/gpio.h> -+#include <linux/spi/spi.h> -+#include <linux/spi/mmc_spi.h> - #include <linux/i2c.h> - #include <linux/i2c-gpio.h> - - #include <mach/hardware.h> - #include <mach/fb.h> -+#include <mach/ep93xx_spi.h> - - #include <asm/mach-types.h> - #include <asm/mach/arch.h> -@@ -38,6 +42,135 @@ static struct ep93xxfb_mach_info __initd - .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING, - }; - -+/* -+ * GPIO lines used for MMC card detection. -+ */ -+#define MMC_CARD_DETECT_GPIO EP93XX_GPIO_LINE_EGPIO0 -+ -+/* -+ * If you have hacked your Sim.One to use a GPIO as SD card chip select -+ * (SD pin 1), uncomment the following line. -+ * The example, EGPIO15, is on TP17 near the CPU. -+ */ -+// #define MMC_CHIP_SELECT_GPIO EP93XX_GPIO_LINE_EGPIO15 -+ -+/* -+ * MMC SPI chip select GPIO handling. If you are using SFRMOUT (SFRM1) signal, -+ * you can leave these empty and pass NULL as .controller_data. -+ */ -+ -+#ifdef MMC_CHIP_SELECT_GPIO -+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, -+}; -+#endif -+ -+/* -+ * 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", -+#ifdef MMC_CHIP_SELECT_GPIO -+ .controller_data = &simone_mmc_spi_ops, -+#endif -+ .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, -@@ -61,6 +194,8 @@ static void __init simone_init_machine(v - 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)); - ep93xx_register_ac97(); - } - |