Messages in this thread Patch in this message | | | Date | 14 Feb 2012 10:34:32 +0000 | From | "Oskar Schirmer" <> | Subject | [PATCH 7/7] arm/imx: add mc13892 I2C based touch panel support for |
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MX35_3DS development board comes with optional touch screen driven by I2C wired mc13892. Set up platform specific declarations.
Signed-off-by: Oskar Schirmer <oskar@scara.com> --- arch/arm/mach-imx/mach-mx35_3ds.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c index 0af6c9c..c65b815 100644 --- a/arch/arm/mach-imx/mach-mx35_3ds.c +++ b/arch/arm/mach-imx/mach-mx35_3ds.c @@ -41,9 +41,13 @@ #include <mach/irqs.h> #include <mach/3ds_debugboard.h> +#include <linux/i2c.h> +#include <linux/mfd/mc13xxx.h> + #include "devices-imx35.h" #define EXPIO_PARENT_INT gpio_to_irq(IMX_GPIO_NR(1, 1)) +#define GPIO_PMIC_INT IMX_GPIO_NR(2, 0) static const struct imxuart_platform_data uart_pdata __initconst = { .flags = IMXUART_HAVE_RTSCTS, @@ -117,6 +121,8 @@ static iomux_v3_cfg_t mx35pdk_pads[] = { MX35_PAD_SD1_DATA1__ESDHC1_DAT1, MX35_PAD_SD1_DATA2__ESDHC1_DAT2, MX35_PAD_SD1_DATA3__ESDHC1_DAT3, + /* PMIC */ + MX35_PAD_GPIO2_0__GPIO2_0, /* I2C1 */ MX35_PAD_I2C1_CLK__I2C1_SCL, MX35_PAD_I2C1_DAT__I2C1_SDA, @@ -174,6 +180,18 @@ static const struct imxi2c_platform_data mx35_3ds_i2c0_data __initconst = { .bitrate = 100000, }; +static struct mc13xxx_platform_data mx35_3ds_pmic = { + .flags = MC13XXX_USE_TOUCHSCREEN, +}; + +static struct i2c_board_info mx35_3ds_i2c_devices[] = { + { + I2C_BOARD_INFO("mc13892", 0x08), + .platform_data = &mx35_3ds_pmic, + .irq = IMX_GPIO_TO_IRQ(GPIO_PMIC_INT), + } +}; + /* * Board specific initialization. */ @@ -187,6 +205,12 @@ static void __init mx35_3ds_init(void) imx35_add_imx2_wdt(NULL); platform_add_devices(devices, ARRAY_SIZE(devices)); + if (0 != gpio_request(GPIO_PMIC_INT, "PMIC_INT")) + printk(KERN_WARNING "PMIC_INT: Couldn't get gpio (%d)\n", + GPIO_PMIC_INT); + else + gpio_direction_input(GPIO_PMIC_INT); + imx35_add_imx_uart0(&uart_pdata); if (otg_mode_host) @@ -203,6 +227,9 @@ static void __init mx35_3ds_init(void) if (mxc_expio_init(MX35_CS5_BASE_ADDR, EXPIO_PARENT_INT)) pr_warn("Init of the debugboard failed, all " "devices on the debugboard are unusable.\n"); + + i2c_register_board_info(0, mx35_3ds_i2c_devices, + ARRAY_SIZE(mx35_3ds_i2c_devices)); imx35_add_imx_i2c0(&mx35_3ds_i2c0_data); } -- 1.7.5.4
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