diff options
| author | Bhuvanchandra DV <bhuvanchandra.dv@toradex.com> | 2017-09-06 14:24:55 +0530 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-09-26 17:32:23 +0200 |
| commit | 0cba15864f7a7011852472a6ff175ff420ec40d6 (patch) | |
| tree | 365cb19d73f0b9c9965068343eebb4761670a738 /arch/arm/mach-tegra | |
| parent | d783b17fe2b01ca42068e43a9783e22aa53bb10d (diff) | |
ARM: mach-tegra: apalis_t30: integrate atmel mxt multitouch controller
Integrate Atmel MXT multitouch controller driver which is interfaced
over I2C bus. The driver supports the 7" multitouch variant available
from Logic Technologies.
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Diffstat (limited to 'arch/arm/mach-tegra')
| -rw-r--r-- | arch/arm/mach-tegra/board-apalis_t30.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/board-apalis_t30.c b/arch/arm/mach-tegra/board-apalis_t30.c index c2e54e73b240..bfd9a5346f2c 100644 --- a/arch/arm/mach-tegra/board-apalis_t30.c +++ b/arch/arm/mach-tegra/board-apalis_t30.c @@ -16,6 +16,7 @@ #include <linux/i2c.h> #include <linux/i2c-tegra.h> #include <linux/input/fusion_F0710A.h> +#include <linux/platform_data/atmel_mxt_ts.h> #include <linux/input.h> #include <linux/io.h> #include <linux/leds.h> @@ -476,7 +477,7 @@ static struct gpio apalis_t30_gpios[] = { {APALIS_GPIO5, GPIOF_IN, "GPIO5 X1-9"}, #endif #ifndef FORCE_OFF_GPIO - {APALIS_GPIO6, GPIOF_IN, "GPIO6 X1-11"}, + {APALIS_GPIO6, GPIOF_OUT_INIT_HIGH, "GPIO6 X1-11"}, #endif /* GPIO7 is used by PCIe driver on Evaluation board */ /* {APALIS_GPIO7, GPIOF_IN, "GPIO7 X1-13"}, */ @@ -546,6 +547,18 @@ static int pinmux_fusion_pins(void) return 0; } +/* + * Atmel touch screen GPIOs (using Toradex display/touch adapter) + * Apalis GPIO 5, MXM-11, Ixora X27-17, pen down interrupt + * Apalis GPIO 6, MXM-13, Ixora X27-18, reset + * gpio_request muxes the GPIO function automatically, we only have to make + * sure input/output muxing is done and the GPIO is freed here. + */ +static struct mxt_platform_data apalis_atmel_pdata = { + .suspend_mode = MXT_SUSPEND_T9_CTRL, + .irqflags = IRQF_TRIGGER_FALLING, +}; + /* I2C */ /* Make sure that the pinmuxing enable the 'open drain' feature for pins used @@ -563,6 +576,12 @@ static struct i2c_board_info apalis_t30_i2c_bus1_board_info[] __initdata = { I2C_BOARD_INFO("fusion_F0710A", 0x10), .platform_data = &apalis_fusion_pdata, }, + { + /* Atmel MAX TS 7 multi-touch controller */ + I2C_BOARD_INFO("atmel_mxt_ts", 0x4a), + .platform_data = &apalis_atmel_pdata, + .irq = TEGRA_GPIO_TO_IRQ( APALIS_GPIO5 ), + }, }; static struct tegra_i2c_platform_data apalis_t30_i2c1_platform_data = { |