gpio.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <baseboard/gpio.h>
#include <baseboard/variants.h>
#include <gpio.h>
#include <soc/gpio.h>
#include <ec/google/chromeec/ec.h>
 
/* This table is used by dalboz variant with board version < 2. */
static const struct soc_amd_gpio bid_1_gpio_set_stage_ram[] = {
        /* DMIC_SEL */
        PAD_GPO(GPIO_6, LOW), // Select Camera 1 DMIC
        /* USB_OC2_L - USB A0 & A1 */
        PAD_NF(GPIO_18, USB_OC2_L, PULL_NONE),
        /* TP */
        PAD_NC(GPIO_32),
        /* EN_PWR_TOUCHPAD_PS2 */
        PAD_GPO(GPIO_67, HIGH),
        /* EN_DEV_BEEP_L */
        PAD_GPO(GPIO_89, HIGH),
        /* USI_RESET */
        PAD_GPO(GPIO_140, HIGH),
        /* Unused */
        PAD_NC(GPIO_143),
};
 
static const struct soc_amd_gpio bid_2_gpio_set_stage_ram[] = {
        /* DMIC_SEL */
        PAD_GPO(GPIO_6, LOW), // Select Camera 1 DMIC
        /* TP */
        PAD_NC(GPIO_32),
        /* EN_PWR_TOUCHPAD_PS2 */
        PAD_GPO(GPIO_67, HIGH),
        /* EN_DEV_BEEP_L */
        PAD_GPO(GPIO_89, HIGH),
        /* USI_RESET */
        PAD_GPO(GPIO_140, HIGH),
};
 
const struct soc_amd_gpio *variant_override_gpio_table(size_t *size)
{
        uint32_t board_version;
 
        /*
         * If board version cannot be read, assume that this is an older revision of the board
         * and so apply overrides. If board version is provided by the EC, then apply overrides
         * if version < 2.
         */
        if (google_chromeec_cbi_get_board_version(&board_version) != 0)
                board_version = 1;
 
        if (board_version < 2) {
                *size = ARRAY_SIZE(bid_1_gpio_set_stage_ram);
                return bid_1_gpio_set_stage_ram;
        } else if (board_version == 2) {
                *size = ARRAY_SIZE(bid_2_gpio_set_stage_ram);
                return bid_2_gpio_set_stage_ram;
        }
 
        *size = 0;
        return NULL;
}