[PATCH v2 09/15] ARM: at91: sam9rlek add touchscreen support through at91_adc
From: Alexandre Belloni <hidden>
Date: 2014-03-17 13:57:32
Also in:
linux-arm-kernel, linux-iio, lkml
Subsystem:
arm port, arm/microchip (at91) soc support, the rest · Maintainers:
Russell King, Nicolas Ferre, Alexandre Belloni, Claudiu Beznea, Linus Torvalds
at91_adc now supports reading a touchscreen for ADCs without a TSMR register. Enable touchscreen support through at91_adc. This allows to use both a touchscreen and the remaining ADC channel at the same time. Signed-off-by: Alexandre Belloni <redacted> --- arch/arm/mach-at91/board-sam9rlek.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c
index 604eecf6cd70..35d420247e25 100644
--- a/arch/arm/mach-at91/board-sam9rlek.c
+++ b/arch/arm/mach-at91/board-sam9rlek.c@@ -18,6 +18,7 @@ #include <linux/clk.h> #include <linux/input.h> #include <linux/gpio_keys.h> +#include <linux/platform_data/at91_adc.h> #include <video/atmel_lcdc.h>
@@ -239,6 +240,17 @@ static struct at91_tsadcc_data ek_tsadcc_data = { /* + * ADC + Touchscreen + */ +static struct at91_adc_data ek_adc_data = { + .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5), + .use_external_triggers = true, + .vref = 3300, + .touchscreen_type = ATMEL_ADC_TOUCHSCREEN_4WIRE, +}; + + +/* * GPIO Buttons */ #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
@@ -312,6 +324,8 @@ static void __init ek_board_init(void) at91_add_device_ac97(&ek_ac97_data); /* Touch Screen Controller */ at91_add_device_tsadcc(&ek_tsadcc_data); + /* Touch Screen Controller + ADC */ + at91_add_device_adc(&ek_adc_data); /* LEDs */ at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds)); /* Push Buttons */
--
1.8.3.2