@@ -20,6 +20,8 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <linux/i2c/tsc2004.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@@ -27,10 +29,64 @@
#include <asm/mach/map.h>
#include <plat/board.h>
+#include <plat/mux.h>
#include <plat/common.h>
#include <plat/usb.h>
/*
+ * TSC 2004 Support
+ */
+#define GPIO_TSC2004_IRQ 65
+
+static int tsc2004_init_irq(void)
+{
+ int ret = 0;
+
+ ret = gpio_request(GPIO_TSC2004_IRQ, "tsc2004-irq");
+ if (ret < 0) {
+ printk(KERN_WARNING "failed to request GPIO#%d: %d\n",
+ GPIO_TSC2004_IRQ, ret);
+ return ret;
+ }
+
+ if (gpio_direction_input(GPIO_TSC2004_IRQ)) {
+ printk(KERN_WARNING "GPIO#%d cannot be configured as "
+ "input\n", GPIO_TSC2004_IRQ);
+ return -ENXIO;
+ }
+
+ omap_set_gpio_debounce(GPIO_TSC2004_IRQ, 1);
+ omap_set_gpio_debounce_time(GPIO_TSC2004_IRQ, 0xa);
+ return ret;
+}
+
+static void tsc2004_exit_irq(void)
+{
+ gpio_free(GPIO_TSC2004_IRQ);
+}
+
+static int tsc2004_get_irq_level(void)
+{
+ return gpio_get_value(GPIO_TSC2004_IRQ) ? 0 : 1;
+}
+
+struct tsc2004_platform_data am3517evm_tsc2004data = {
+ .model = 2004,
+ .x_plate_ohms = 180,
+ .get_pendown_state = tsc2004_get_irq_level,
+ .init_platform_hw = tsc2004_init_irq,
+ .exit_platform_hw = tsc2004_exit_irq,
+};
+
+static struct i2c_board_info __initdata am3517evm_tsc_i2c_boardinfo[] = {
+ {
+ I2C_BOARD_INFO("tsc2004", 0x4B),
+ .type = "tsc2004",
+ .platform_data = &am3517evm_tsc2004data,
+ },
+};
+
+/*
* Board initialization
*/
static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
@@ -67,6 +123,11 @@ static void __init am3517_evm_init(void)
omap_serial_init();
usb_ehci_init(&ehci_pdata);
+
+ /* TSC 2004 */
+ am3517evm_tsc_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_TSC2004_IRQ);
+ i2c_register_board_info(1, am3517evm_tsc_i2c_boardinfo,
+ ARRAY_SIZE(am3517evm_tsc_i2c_boardinfo));
}
static void __init am3517_evm_map_io(void)