chromeos.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootmode.h>
#include <boot/coreboot_tables.h>
#include <device/pci_ops.h>
#include <device/device.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "onboard.h"
 
void fill_lb_gpios(struct lb_gpios *gpios)
{
        struct lb_gpio chromeos_gpios[] = {
                /* Recovery: GPIO42 = CHP3_REC_MODE# */
                {GPIO_REC_MODE, ACTIVE_LOW, !get_recovery_mode_switch(),
                 "presence"},
 
                /* Hard code the lid switch GPIO to open. */
                {100, ACTIVE_HIGH, 1, "lid"},
 
                /* Power Button */
                {101, ACTIVE_LOW, get_power_switch(), "power"},
 
                /* Did we load the VGA Option ROM? */
                /* -1 indicates that this is a pseudo GPIO */
                {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
        };
        lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
 
int get_write_protect_state(void)
{
        return get_gpio(GPIO_SPI_WP);
}
 
int get_recovery_mode_switch(void)
{
        return !get_gpio(GPIO_REC_MODE);
}
 
int get_power_switch(void)
{
        const pci_devfn_t dev = PCI_DEV(0, 0x1f, 0);
        u16 gen_pmcon_1 = pci_s_read_config32(dev, GEN_PMCON_1);
        return (gen_pmcon_1 >> 9) & 1;
}
 
static const struct cros_gpio cros_gpios[] = {
        CROS_GPIO_REC_AL(GPIO_REC_MODE, CROS_GPIO_DEVICE_NAME),
        CROS_GPIO_WP_AH(GPIO_SPI_WP, CROS_GPIO_DEVICE_NAME),
};
 
DECLARE_CROS_GPIOS(cros_gpios);