aaro.koskinen at nokia
Nov 4, 2009, 5:23 AM
Post #1 of 5
(129 views)
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[PATCH v2 2/2] omap: RX-51: enable tsc2005
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Enable tsc2005 touchscreen driver on the RX-51 board.
Signed-off-by: Aaro Koskinen <aaro.koskinen [at] nokia>
---
The patch is for 2.6.32-rc6.
arch/arm/configs/rx51_defconfig | 1 +
arch/arm/mach-omap2/board-rx51-peripherals.c | 66 ++++++++++++++++++++++++++
2 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/arch/arm/configs/rx51_defconfig b/arch/arm/configs/rx51_defconfig
index e7e3133..b10de8f 100644
--- a/arch/arm/configs/rx51_defconfig
+++ b/arch/arm/configs/rx51_defconfig
@@ -802,6 +802,7 @@ CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
+CONFIG_TOUCHSCREEN_TSC2005=m
# CONFIG_TOUCHSCREEN_TSC2007 is not set
CONFIG_INPUT_MISC=y
# CONFIG_INPUT_ATI_REMOTE is not set
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index e34d96a..ff3869a 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -14,6 +14,7 @@
#include <linux/input.h>
#include <linux/input/matrix_keypad.h>
#include <linux/spi/spi.h>
+#include <linux/spi/tsc2005.h>
#include <linux/i2c.h>
#include <linux/i2c/twl4030.h>
#include <linux/clk.h>
@@ -509,6 +510,68 @@ static inline void board_onenand_init(void)
#endif
+#define RX51_TSC2005_RESET_GPIO 104
+#define RX51_TSC2005_IRQ_GPIO 100
+
+static struct omap2_mcspi_device_config tsc2005_mcspi_config = {
+ .turbo_mode = 0,
+ .single_channel = 1,
+};
+
+static struct tsc2005_platform_data tsc2005_config = {
+ .ts_x_plate_ohm = 280,
+ .ts_hw_avg = 0,
+ .ts_touch_pressure = 1500,
+ .ts_stab_time = 1000,
+ .ts_pressure_max = 2048,
+ .ts_pressure_fudge = 2,
+ .ts_x_max = 4096,
+ .ts_x_fudge = 4,
+ .ts_y_max = 4096,
+ .ts_y_fudge = 7,
+
+ .esd_timeout = 8*1000, /* ms of inactivity before we check */
+
+ .set_reset = NULL,
+};
+
+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(RX51_TSC2005_IRQ_GPIO, "tsc2005 DAV IRQ");
+ if (r >= 0)
+ gpio_direction_input(RX51_TSC2005_IRQ_GPIO);
+ else
+ printk(KERN_ERR "unable to get %s GPIO\n", "tsc2005 DAV IRQ");
+
+ r = gpio_request(RX51_TSC2005_RESET_GPIO, "tsc2005 reset");
+ if (r >= 0) {
+ gpio_direction_output(RX51_TSC2005_RESET_GPIO, 1);
+ tsc2005_config.set_reset = rx51_tsc2005_set_reset;
+ } else {
+ printk(KERN_ERR "unable to get %s GPIO\n", "tsc2005 reset");
+ tsc2005_config.esd_timeout = 0;
+ }
+}
+
+static struct spi_board_info rx51_peripherals_spi_board_info[] = {
+ [0] = {
+ .modalias = "tsc2005",
+ .bus_num = 1,
+ .chip_select = 0,
+ .irq = OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO),
+ .max_speed_hz = 6000000,
+ .controller_data = &tsc2005_mcspi_config,
+ .platform_data = &tsc2005_config,
+ },
+};
+
#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
static struct omap_smc91x_platform_data board_smc91x_data = {
@@ -538,6 +601,9 @@ static inline void board_smc91x_init(void)
void __init rx51_peripherals_init(void)
{
+ spi_register_board_info(rx51_peripherals_spi_board_info,
+ ARRAY_SIZE(rx51_peripherals_spi_board_info));
+ rx51_init_tsc2005();
rx51_i2c_init();
board_onenand_init();
board_smc91x_init();
--
1.6.0.4
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