AT91: add platform parameters for atmel_tsadcc in at91sam9rlek

Setup platform parameters in at91sam9rl-ek board to be passed to
atmel_tsadcc touchscreen.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

3 files changed, 25 insertions, 4 deletions

diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index d345f5453dbe..53aaa94df75a 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -622,6 +622,7 @@ static void __init at91_add_device_tc(void) { }
 
 #if defined(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) || defined(CONFIG_TOUCHSCREEN_ATMEL_TSADCC_MODULE)
 static u64 tsadcc_dmamask = DMA_BIT_MASK(32);
+static struct at91_tsadcc_data tsadcc_data;
 
 static struct resource tsadcc_resources[] = {
         [0] = {
@@ -642,22 +643,27 @@ static struct platform_device at91sam9rl_tsadcc_device = {
         .dev            = {
                                 .dma_mask               = &tsadcc_dmamask,
                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &tsadcc_data,
         },
         .resource       = tsadcc_resources,
         .num_resources  = ARRAY_SIZE(tsadcc_resources),
 };
 
-void __init at91_add_device_tsadcc(void)
+void __init at91_add_device_tsadcc(struct at91_tsadcc_data *data)
 {
+        if (!data)
+                return;
+
         at91_set_A_periph(AT91_PIN_PA17, 0);    /* AD0_XR */
         at91_set_A_periph(AT91_PIN_PA18, 0);    /* AD1_XL */
         at91_set_A_periph(AT91_PIN_PA19, 0);    /* AD2_YT */
         at91_set_A_periph(AT91_PIN_PA20, 0);    /* AD3_TB */
 
+        tsadcc_data = *data;
         platform_device_register(&at91sam9rl_tsadcc_device);
 }
 #else
-void __init at91_add_device_tsadcc(void) {}
+void __init at91_add_device_tsadcc(struct at91_tsadcc_data *data) {}
 #endif
 
 
diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c
index bd28e989e54e..7ac20f3a2067 100644
--- a/arch/arm/mach-at91/board-sam9rlek.c
+++ b/arch/arm/mach-at91/board-sam9rlek.c
@@ -243,6 +243,16 @@ static struct gpio_led ek_leds[] = {
 
 
 /*
+ * Touchscreen
+ */
+static struct at91_tsadcc_data ek_tsadcc_data = {
+        .adc_clock              = 1000000,
+        .pendet_debounce        = 0x0f,
+        .ts_sample_hold_time    = 0x03,
+};
+
+
+/*
  * GPIO Buttons
  */
 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
@@ -310,7 +320,7 @@ static void __init ek_board_init(void)
         /* AC97 */
         at91_add_device_ac97(&ek_ac97_data);
         /* Touch Screen Controller */
-        at91_add_device_tsadcc();
+        at91_add_device_tsadcc(&ek_tsadcc_data);
         /* LEDs */
         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
         /* Push Buttons */
diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h
index 2f4fcedc02ba..6f1579f8abdd 100644
--- a/arch/arm/mach-at91/include/mach/board.h
+++ b/arch/arm/mach-at91/include/mach/board.h
@@ -186,7 +186,12 @@ extern void __init at91_add_device_ac97(struct ac97c_platform_data *data);
 extern void __init at91_add_device_isi(void);
 
  /* Touchscreen Controller */
-extern void __init at91_add_device_tsadcc(void);
+struct at91_tsadcc_data {
+        unsigned int    adc_clock;
+        u8              pendet_debounce;
+        u8              ts_sample_hold_time;
+};
+extern void __init at91_add_device_tsadcc(struct at91_tsadcc_data *data);
 
 /* CAN */
 struct at91_can_data {