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google/oak: Implement the code which reads GPIOs for ChromeOS.

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BUG=none
BRANCH=none
TEST=emerge-oak corebootk

Change-Id: Ic1a0d640cac7fd98acd06d619736303fa449c0a1
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: ce465e8cbdf6465c072e476a91a400d78c959218
Original-Change-Id: Iade51db02f45264fdffe387e0563b60e637c0710
Original-Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/292674
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/12606
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Yidi Lin
2015-07-31 17:10:57 +08:00
committed by Patrick Georgi
parent 9d48e1732a
commit 65873ca934
3 changed files with 128 additions and 2 deletions
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86
src/mainboard/google/oak/chromeos.c
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@@ -18,10 +18,88 @@
*/
#include <boot/coreboot_tables.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/ec_commands.h>
#include <gpio.h>
#include <string.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "gpio.h"
void setup_chromeos_gpios(void)
{
gpio_input(WRITE_PROTECT);
gpio_input_pullup(EC_IN_RW);
gpio_input_pullup(EC_IRQ);
gpio_input_pullup(LID);
gpio_input_pullup(POWER_BUTTON);
gpio_output(EC_SUSPEND_L, 1);
}
void fill_lb_gpios(struct lb_gpios *gpios)
{
int count = 0;
/* Write protect : active low */
gpios->gpios[count].port = WRITE_PROTECT;
gpios->gpios[count].polarity = ACTIVE_LOW;
gpios->gpios[count].value = gpio_get(WRITE_PROTECT);
strncpy((char *)gpios->gpios[count].name, "write protect",
GPIO_MAX_NAME_LENGTH);
count++;
/* Recovery: active high */
gpios->gpios[count].port = -1;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = get_recovery_mode_switch();
strncpy((char *)gpios->gpios[count].name, "recovery",
GPIO_MAX_NAME_LENGTH);
count++;
/* Lid: active high */
gpios->gpios[count].port = LID;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = -1;
strncpy((char *)gpios->gpios[count].name, "lid", GPIO_MAX_NAME_LENGTH);
count++;
/* Power: active high */
gpios->gpios[count].port = POWER_BUTTON;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = -1;
strncpy((char *)gpios->gpios[count].name, "power",
GPIO_MAX_NAME_LENGTH);
count++;
/* Developer: virtual GPIO active high */
gpios->gpios[count].port = -1;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = get_developer_mode_switch();
strncpy((char *)gpios->gpios[count].name, "developer",
GPIO_MAX_NAME_LENGTH);
count++;
/* EC in RW: active high */
gpios->gpios[count].port = EC_IN_RW;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = -1;
strncpy((char *)gpios->gpios[count].name, "EC in RW",
GPIO_MAX_NAME_LENGTH);
count++;
/* EC interrupt: GPIO active low */
gpios->gpios[count].port = EC_IRQ;
gpios->gpios[count].polarity = ACTIVE_LOW;
gpios->gpios[count].value = -1;
strncpy((char *)gpios->gpios[count].name, "EC interrupt",
GPIO_MAX_NAME_LENGTH);
count++;
gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio));
gpios->count = count;
printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size);
}
int get_developer_mode_switch(void)
@@ -31,10 +109,14 @@ int get_developer_mode_switch(void)
int get_recovery_mode_switch(void)
{
return 0;
uint32_t ec_events;
ec_events = google_chromeec_get_events_b();
return !!(ec_events &
EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
}
int get_write_protect_state(void)
{
return 0;
return !gpio_get(WRITE_PROTECT);
}