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board: Add support for KEY1 status detection on K+P's HSC|DDC boards

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This code provides information if the K+P's imx53 boards had KEY1
pressed.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Lukasz Majewski 2018-05-20 08:33:16 +02:00 committed by Stefano Babic
parent 5ca614cae9
commit 0b35b2d117
2 changed files with 16 additions and 0 deletions
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2
arch/arm/dts/imx53-kp.dts
View File

@ -88,6 +88,8 @@
MX53_PAD_EIM_CS0__GPIO2_23 0x1e4
/* LCD BACKLIGHT */
MX53_PAD_GPIO_1__GPIO1_1 0x1e4
/* KEY1 GPIO */
MX53_PAD_EIM_RW__GPIO2_26 0x1e4
>;
};

14
board/k+p/kp_imx53/kp_imx53.c
View File

@ -23,6 +23,7 @@
#define PHY_nRST IMX_GPIO_NR(7, 6)
#define BOOSTER_OFF IMX_GPIO_NR(2, 23)
#define LCD_BACKLIGHT IMX_GPIO_NR(1, 1)
#define KEY1 IMX_GPIO_NR(2, 26)
DECLARE_GLOBAL_DATA_PTR;
@ -196,6 +197,17 @@ void board_disable_display(void)
gpio_direction_output(LCD_BACKLIGHT, 0);
}
void board_misc_setup(void)
{
gpio_request(KEY1, "KEY1_GPIO");
gpio_direction_input(KEY1);
if (gpio_get_value(KEY1))
env_set("key1", "off");
else
env_set("key1", "on");
}
int board_late_init(void)
{
int ret = 0;
@ -215,5 +227,7 @@ int board_late_init(void)
show_eeprom();
read_board_id();
board_misc_setup();
return ret;
}