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>
 
static const struct soc_amd_gpio berknip_bid1_gpio_set_stage_ram[] = {
        /* PEN_DETECT_ODL - no used */
        PAD_NC(GPIO_4),
        /* PEN_POWER_EN - no used */
        PAD_NC(GPIO_5),
        /* DMIC_SEL */
        PAD_GPO(GPIO_13, LOW), // Select Camera 1 Dmic
        /* USB_OC4_L - USB_A1 */
        PAD_NF(GPIO_14, USB_OC4_L, PULL_NONE),
        /* USB_OC2_L - USB A0 */
        PAD_NF(GPIO_18, USB_OC2_L, PULL_NONE),
        /* EN_PWR_WIFI */
        PAD_GPO(GPIO_29, HIGH),
        /* EN_PWR_TOUCHPAD_PS2 */
        PAD_GPO(GPIO_67, HIGH),
        /* MST_GPIO_2 (Fw Update HDMI hub) */
        PAD_GPI(GPIO_86, PULL_NONE),
        /* EN_DEV_BEEP_L */
        PAD_GPO(GPIO_89, HIGH),
        /* MST_GPIO_3 (Fw Update HDMI hub) */
        PAD_GPI(GPIO_90, PULL_NONE),
        /* USI_RESET */
        PAD_GPO(GPIO_140, HIGH),
};
 
static const struct soc_amd_gpio berknip_bid2_gpio_set_stage_ram[] = {
        /* PEN_DETECT_ODL - no used */
        PAD_NC(GPIO_4),
        /* PEN_POWER_EN - no used */
        PAD_NC(GPIO_5),
        /* EN_DEV_BEEP_L */
        PAD_GPO(GPIO_89, HIGH),
        /* TP */
        PAD_NC(GPIO_90),
        /* USI_RESET */
        PAD_GPO(GPIO_140, HIGH),
};
 
static const struct soc_amd_gpio berknip_gpio_set_stage_ram[] = {
        /* PEN_DETECT_ODL - no used */
        PAD_NC(GPIO_4),
        /* PEN_POWER_EN - no used */
        PAD_NC(GPIO_5),
};
 
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 <= 1) {
                *size = ARRAY_SIZE(berknip_bid1_gpio_set_stage_ram);
                return berknip_bid1_gpio_set_stage_ram;
        } else if (board_version <= 2) {
                *size = ARRAY_SIZE(berknip_bid2_gpio_set_stage_ram);
                return berknip_bid2_gpio_set_stage_ram;
        }
 
        *size = ARRAY_SIZE(berknip_gpio_set_stage_ram);
        return berknip_gpio_set_stage_ram;
}