This change adds initialization of TSC2005 touchscreen controller found on Nokia RX-51 board.
The change is taken from MeeGo kernel adaptation for Nokia N900, it repeats the work of Aaro Koskinen and Mika Laitio, the original discussion is at http://www.mail-archive.com/[email protected]/msg26749.html Signed-off-by: Vladimir Zapolskiy <[email protected]> Cc: Tony Lindgren <[email protected]> Cc: Aaro Koskinen <[email protected]> --- Changes from v2 to v3: * added explicit gpio pin mux definitions * use gpio_array_request() for requesting multiple GPIOs Changes from v1 to v2: * whitespace fix arch/arm/mach-omap2/board-rx51-peripherals.c | 48 ++++++++++++++++++++++++- 1 files changed, 46 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c index ba1aa07..dc15ae8 100644 --- a/arch/arm/mach-omap2/board-rx51-peripherals.c +++ b/arch/arm/mach-omap2/board-rx51-peripherals.c @@ -15,6 +15,7 @@ #include <linux/input/matrix_keypad.h> #include <linux/spi/spi.h> #include <linux/wl12xx.h> +#include <linux/spi/tsc2005.h> #include <linux/i2c.h> #include <linux/i2c/twl.h> #include <linux/clk.h> @@ -56,6 +57,9 @@ #define RX51_FMTX_IRQ 53 #define RX51_LP5523_CHIP_EN_GPIO 41 +#define RX51_TSC2005_RESET_GPIO 104 +#define RX51_TSC2005_IRQ_GPIO 100 + #define RX51_USB_TRANSCEIVER_RST_GPIO 67 /* list all spi devices here */ @@ -146,6 +150,17 @@ static struct omap2_mcspi_device_config tsc2005_mcspi_config = { .single_channel = 1, }; +static struct tsc2005_platform_data tsc2005_pdata = { + .ts_pressure_max = 2048, + .ts_pressure_fudge = 2, + .ts_x_max = 4096, + .ts_x_fudge = 4, + .ts_y_max = 4096, + .ts_y_fudge = 4, + .ts_x_plate_ohm = 320, + .esd_timeout_ms = 8000, +}; + static struct spi_board_info rx51_peripherals_spi_board_info[] __initdata = { [RX51_SPI_WL1251] = { .modalias = "wl1251", @@ -167,10 +182,10 @@ static struct spi_board_info rx51_peripherals_spi_board_info[] __initdata = { .modalias = "tsc2005", .bus_num = 1, .chip_select = 0, - /* .irq = OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO),*/ + .irq = OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO), .max_speed_hz = 6000000, .controller_data = &tsc2005_mcspi_config, - /* .platform_data = &tsc2005_config,*/ + .platform_data = &tsc2005_pdata, }, }; @@ -1086,6 +1101,34 @@ error: */ } +static struct gpio rx51_tsc2005_gpios[] __initdata = { + { RX51_TSC2005_IRQ_GPIO, GPIOF_IN, "tsc2005 IRQ" }, + { RX51_TSC2005_RESET_GPIO, GPIOF_OUT_INIT_HIGH, "tsc2005 reset" }, +}; + +static void rx51_tsc2005_set_reset(bool enable) +{ + gpio_set_value(RX51_TSC2005_RESET_GPIO, enable); +} + +static void __init rx51_init_tsc2005(void) +{ + int r; + + omap_mux_init_gpio(RX51_TSC2005_RESET_GPIO, OMAP_PIN_OUTPUT); + omap_mux_init_gpio(RX51_TSC2005_IRQ_GPIO, OMAP_PIN_INPUT_PULLUP); + + r = gpio_request_array(rx51_tsc2005_gpios, + ARRAY_SIZE(rx51_tsc2005_gpios)); + if (r < 0) { + printk(KERN_ERR "tsc2005 board initialization failed\n"); + tsc2005_pdata.esd_timeout_ms = 0; + return; + } + + tsc2005_pdata.set_reset = rx51_tsc2005_set_reset; +} + void __init rx51_peripherals_init(void) { rx51_i2c_init(); @@ -1094,6 +1137,7 @@ void __init rx51_peripherals_init(void) board_smc91x_init(); rx51_add_gpio_keys(); rx51_init_wl1251(); + rx51_init_tsc2005(); rx51_init_si4713(); spi_register_board_info(rx51_peripherals_spi_board_info, ARRAY_SIZE(rx51_peripherals_spi_board_info)); -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
