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remarkable-uboot
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Add support for checking gpio keys for magic keypress as well

utp
Martin T. H. Sandsmark 2016-12-04 19:31:21 +01:00
parent b8a611f4aa
commit 60e1615193
2 changed files with 40 additions and 2 deletions
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4
arch/arm/include/asm/arch-mx6/mx6sl_pins.h
View File

@ -141,5 +141,9 @@ enum {
MX6_PAD_KEY_COL0__KEY_COL0 = IOMUX_PAD(0x474, 0x16c, 0, 0x734, 0, 0),
MX6_PAD_KEY_COL1__KEY_COL1 = IOMUX_PAD(0x478, 0x170, 0, 0x738, 0, 0),
MX6_PAD_KEY_COL2__KEY_COL2 = IOMUX_PAD(0x47c, 0x174, 0, 0x73c, 0, 0),
MX6_PAD_KEY_COL0__GPIO_3_24 = IOMUX_PAD(0x474, 0x16c, 5, 0x0000, 0, 0),
MX6_PAD_KEY_COL1__GPIO_3_26 = IOMUX_PAD(0x478, 0x170, 5, 0x0000, 0, 0),
MX6_PAD_KEY_COL2__GPIO_3_28 = IOMUX_PAD(0x47c, 0x174, 5, 0x0000, 0, 0),
};
#endif /* __ASM_ARCH_MX6_MX6SL_PINS_H__ */

38
board/reMarkable/zero-gravitas/zero-gravitas.c
View File

@ -57,6 +57,11 @@ DECLARE_GLOBAL_DATA_PTR;
#define ETH_PHY_POWER IMX_GPIO_NR(4, 21)
/* GPIO keys */
#define GPIO_KEY_LEFT IMX_GPIO_NR(3, 24)
#define GPIO_KEY_HOME IMX_GPIO_NR(3, 26)
#define GPIO_KEY_RIGHT IMX_GPIO_NR(3, 28)
/*
* For handling the keypad
*/
@ -155,6 +160,12 @@ static iomux_v3_cfg_t const key_pads[] = {
MX6_PAD_KEY_COL2__KEY_COL2 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static iomux_v3_cfg_t const gpio_key_pads[] = {
MX6_PAD_KEY_COL0__GPIO_3_24 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_KEY_COL1__GPIO_3_26 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_KEY_COL2__GPIO_3_28 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
@ -415,7 +426,6 @@ static int check_charger_status(void)
return gpio_get_value(BQ24133_CHRGR_OK);
}
int power_init_board(void)
{
struct pmic *p;
@ -573,6 +583,30 @@ int board_early_init_f(void)
return 0;
}
/*
* Sets up GPIO keys and checks for magic key combo
*/
static int check_gpio_keypress(void)
{
int left, home, right;
/* Set up pins */
imx_iomux_v3_setup_multiple_pads(gpio_key_pads, ARRAY_SIZE(gpio_key_pads));
gpio_request(GPIO_KEY_LEFT, "key_left");
gpio_direction_input(GPIO_KEY_LEFT);
gpio_request(GPIO_KEY_HOME, "key_home");
gpio_direction_input(GPIO_KEY_HOME);
gpio_request(GPIO_KEY_RIGHT, "key_right");
gpio_direction_input(GPIO_KEY_RIGHT);
left = gpio_get_value(GPIO_KEY_LEFT);
home = gpio_get_value(GPIO_KEY_HOME);
right = gpio_get_value(GPIO_KEY_RIGHT);
return !left && home && !right;
}
/*
* Sets up the keypad and then checks for a magic key combo
*/
@ -676,7 +710,7 @@ int board_init(void)
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
if (check_keypress()) {
if (check_keypress() || check_gpio_keypress()) {
printf("Magic key press detected, launching USB download mode\n");
hab_rvt_failsafe(); /* This never returns, hopefully */
}