ARM: OMAP3: rx51: enable tsc2005 touchscreen
Aaro Koskinen [Tue, 13 Dec 2011 18:48:53 +0000 (10:48 -0800)]
Enable TSC2005 touchscreen driver on the RX-51 board by providing the
needed platform data.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Reviewed-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-rx51-peripherals.c

index bd18d69..e9eff00 100644 (file)
@@ -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>
@@ -58,6 +59,9 @@
 
 #define RX51_USB_TRANSCEIVER_RST_GPIO  67
 
+#define RX51_TSC2005_RESET_GPIO         104
+#define RX51_TSC2005_IRQ_GPIO           100
+
 /* list all spi devices here */
 enum {
        RX51_SPI_WL1251,
@@ -66,6 +70,7 @@ enum {
 };
 
 static struct wl12xx_platform_data wl1251_pdata;
+static struct tsc2005_platform_data tsc2005_pdata;
 
 #if defined(CONFIG_SENSORS_TSL2563) || defined(CONFIG_SENSORS_TSL2563_MODULE)
 static struct tsl2563_platform_data rx51_tsl2563_platform_data = {
@@ -167,10 +172,10 @@ 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 +1091,42 @@ error:
         */
 }
 
+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             = 7,
+       .ts_x_plate_ohm         = 280,
+       .esd_timeout_ms         = 8000,
+};
+
+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;
+
+       r = gpio_request_one(RX51_TSC2005_IRQ_GPIO, GPIOF_IN, "tsc2005 IRQ");
+       if (r < 0) {
+               printk(KERN_ERR "unable to get %s GPIO\n", "tsc2005 IRQ");
+               rx51_peripherals_spi_board_info[RX51_SPI_TSC2005].irq = 0;
+       }
+
+       r = gpio_request_one(RX51_TSC2005_RESET_GPIO, GPIOF_OUT_INIT_HIGH,
+               "tsc2005 reset");
+       if (r >= 0) {
+               tsc2005_pdata.set_reset = rx51_tsc2005_set_reset;
+       } else {
+               printk(KERN_ERR "unable to get %s GPIO\n", "tsc2005 reset");
+               tsc2005_pdata.esd_timeout_ms = 0;
+       }
+}
+
 void __init rx51_peripherals_init(void)
 {
        rx51_i2c_init();
@@ -1094,6 +1135,7 @@ 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));