* Grazvydas Ignotas <[EMAIL PROTECTED]> [081106 11:50]:
> This patch adds ADS7846 compatible touchscreen support for
> OMAP3 Pandora.
Pushing these today.
Tony
> Signed-off-by: Grazvydas Ignotas <[EMAIL PROTECTED]>
> ---
> arch/arm/mach-omap2/board-omap3pandora.c | 57
> ++++++++++++++++++++++++++++++
> 1 files changed, 57 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/board-omap3pandora.c
> b/arch/arm/mach-omap2/board-omap3pandora.c
> index 9fd3499..b10bf00 100644
> --- a/arch/arm/mach-omap2/board-omap3pandora.c
> +++ b/arch/arm/mach-omap2/board-omap3pandora.c
> @@ -25,6 +25,8 @@
> #include <linux/kernel.h>
> #include <linux/platform_device.h>
>
> +#include <linux/spi/spi.h>
> +#include <linux/spi/ads7846.h>
> #include <linux/i2c/twl4030.h>
>
> #include <linux/mtd/mtd.h>
> @@ -45,6 +47,7 @@
> #include <mach/nand.h>
> #include <mach/usb-ehci.h>
> #include <mach/usb-musb.h>
> +#include <mach/mcspi.h>
>
> #include "sdram-micron-mt46h32m32lf-6.h"
> #include "mmc-twl4030.h"
> @@ -54,6 +57,8 @@
> #define GPMC_CS0_BASE 0x60
> #define GPMC_CS_SIZE 0x30
>
> +#define OMAP3_PANDORA_TS_GPIO 94
> +
> static struct mtd_partition omap3pandora_nand_partitions[] = {
> {
> .name = "xloader",
> @@ -185,6 +190,55 @@ static void __init omap3pandora_init_irq(void)
> omap_gpio_init();
> }
>
> +static void __init omap3pandora_ads7846_init(void)
> +{
> + int gpio = OMAP3_PANDORA_TS_GPIO;
> + int ret;
> +
> + ret = gpio_request(gpio, "ads7846_pen_down");
> + if (ret < 0) {
> + printk(KERN_ERR "Failed to request GPIO %d for "
> + "ads7846 pen down IRQ\n", gpio);
> + return;
> + }
> +
> + gpio_direction_input(gpio);
> +}
> +
> +static int ads7846_get_pendown_state(void)
> +{
> + return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
> +}
> +
> +static struct ads7846_platform_data ads7846_config = {
> + .x_max = 0x0fff,
> + .y_max = 0x0fff,
> + .x_plate_ohms = 180,
> + .pressure_max = 255,
> + .debounce_max = 10,
> + .debounce_tol = 3,
> + .debounce_rep = 1,
> + .get_pendown_state = ads7846_get_pendown_state,
> + .keep_vref_on = 1,
> +};
> +
> +static struct omap2_mcspi_device_config ads7846_mcspi_config = {
> + .turbo_mode = 0,
> + .single_channel = 1, /* 0: slave, 1: master */
> +};
> +
> +static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
> + {
> + .modalias = "ads7846",
> + .bus_num = 1,
> + .chip_select = 0,
> + .max_speed_hz = 1500000,
> + .controller_data = &ads7846_mcspi_config,
> + .irq = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
> + .platform_data = &ads7846_config,
> + }
> +};
> +
> static struct platform_device omap3pandora_lcd_device = {
> .name = "pandora_lcd",
> .id = -1,
> @@ -219,10 +273,13 @@ static void __init omap3pandora_init(void)
> omap_board_config = omap3pandora_config;
> omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
> omap_serial_init();
> + spi_register_board_info(omap3pandora_spi_board_info,
> + ARRAY_SIZE(omap3pandora_spi_board_info));
> hsmmc_init(mmc);
> usb_musb_init();
> usb_ehci_init();
> omap3pandora_flash_init();
> + omap3pandora_ads7846_init();
> }
>
> static void __init omap3pandora_map_io(void)
> --
> 1.5.4.3
>
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