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| author | Alan Carvalho de Assis <acassis@gmail.com> | 2009-11-27 14:09:54 -0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-12-02 12:06:14 +0100 |
| commit | 9e3e7afe9bd73cc3fe0d742ba3391e864e234923 (patch) | |
| tree | 4e944d3f94fcc17c50c48f7d02a8d0bd5c595cf2 /arch/arm | |
| parent | 9c2daf15ac5aba3c7897540c3b606e54550d9c8f (diff) | |
| download | kernel_samsung_smdk4412-9e3e7afe9bd73cc3fe0d742ba3391e864e234923.zip kernel_samsung_smdk4412-9e3e7afe9bd73cc3fe0d742ba3391e864e234923.tar.gz kernel_samsung_smdk4412-9e3e7afe9bd73cc3fe0d742ba3391e864e234923.tar.bz2 | |
mx27: mxt_td60: Add support to SD/MMC
This patch configures iomux and i2c io expander in order to add
support to SD/MMC cards on i-MXT TD60.
Signed-off-by: Alan Carvalho de Assis <acassis@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-mx2/mxt_td60.c | 39 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/iomux.h | 1 |
2 files changed, 38 insertions, 2 deletions
diff --git a/arch/arm/mach-mx2/mxt_td60.c b/arch/arm/mach-mx2/mxt_td60.c index dd251f5..03dbbdc 100644 --- a/arch/arm/mach-mx2/mxt_td60.c +++ b/arch/arm/mach-mx2/mxt_td60.c @@ -36,6 +36,7 @@ #include <mach/iomux.h> #include <mach/mxc_nand.h> #include <mach/i2c.h> +#include <linux/i2c/pca953x.h> #include <mach/imxfb.h> #include <mach/mmc.h> @@ -132,6 +133,7 @@ static unsigned int mxt_td60_pins[] __initdata = { PE21_PF_SD1_D3, PE22_PF_SD1_CMD, PE23_PF_SD1_CLK, + PF8_AF_ATA_IORDY, /* SDHC2*/ PB4_PF_SD2_D0, PB5_PF_SD2_D1, @@ -150,7 +152,40 @@ static struct imxi2c_platform_data mxt_td60_i2c_data = { .bitrate = 100000, }; +/* PCA9557 */ +static int mxt_td60_pca9557_setup(struct i2c_client *client, + unsigned gpio_base, unsigned ngpio, + void *context) +{ + static int mxt_td60_gpio_value[] = { + -1, -1, -1, -1, -1, -1, -1, 1 + }; + int n; + + for (n = 0; n < ARRAY_SIZE(mxt_td60_gpio_value); ++n) { + gpio_request(gpio_base + n, "MXT_TD60 GPIO Exp"); + if (mxt_td60_gpio_value[n] < 0) + gpio_direction_input(gpio_base + n); + else + gpio_direction_output(gpio_base + n, + mxt_td60_gpio_value[n]); + gpio_export(gpio_base + n, 0); + } + + return 0; +} + +static struct pca953x_platform_data mxt_td60_pca9557_pdata = { + .gpio_base = 240, /* place PCA9557 after all MX27 gpio pins */ + .invert = 0, /* Do not invert */ + .setup = mxt_td60_pca9557_setup, +}; + static struct i2c_board_info mxt_td60_i2c_devices[] = { + { + I2C_BOARD_INFO("pca9557", 0x18), + .platform_data = &mxt_td60_pca9557_pdata, + }, }; static struct imxi2c_platform_data mxt_td60_i2c2_data = { @@ -201,13 +236,13 @@ static struct imx_fb_platform_data mxt_td60_fb_data = { static int mxt_td60_sdhc1_init(struct device *dev, irq_handler_t detect_irq, void *data) { - return request_irq(IRQ_GPIOE(21), detect_irq, IRQF_TRIGGER_RISING, + return request_irq(IRQ_GPIOF(8), detect_irq, IRQF_TRIGGER_FALLING, "sdhc1-card-detect", data); } static void mxt_td60_sdhc1_exit(struct device *dev, void *data) { - free_irq(IRQ_GPIOE(21), data); + free_irq(IRQ_GPIOF(8), data); } static struct imxmmc_platform_data sdhc1_pdata = { diff --git a/arch/arm/plat-mxc/include/mach/iomux.h b/arch/arm/plat-mxc/include/mach/iomux.h index 6d49f8a..011cfcd 100644 --- a/arch/arm/plat-mxc/include/mach/iomux.h +++ b/arch/arm/plat-mxc/include/mach/iomux.h @@ -123,6 +123,7 @@ #define IRQ_GPIOC(x) (IRQ_GPIOB(32) + x) #define IRQ_GPIOD(x) (IRQ_GPIOC(32) + x) #define IRQ_GPIOE(x) (IRQ_GPIOD(32) + x) +#define IRQ_GPIOF(x) (IRQ_GPIOE(32) + x) extern void mxc_gpio_mode(int gpio_mode); |