fw_config.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootstate.h>
#include <console/console.h>
#include <fw_config.h>
#include <gpio.h>
 
static const struct pad_config dmic_enable_pads[] = {
        PAD_CFG_NF(GPP_S2, NONE, DEEP, NF2),    /* DMIC_CLK0_R */
        PAD_CFG_NF(GPP_S3, NONE, DEEP, NF2),    /* DMIC_DATA0_R */
        PAD_CFG_NF(GPP_S6, NONE, DEEP, NF2),    /* DMIC_CLK1_R */
        PAD_CFG_NF(GPP_S7, NONE, DEEP, NF2),    /* DMIC_DATA1_R */
};
 
static const struct pad_config dmic_disable_pads[] = {
        PAD_NC(GPP_S2, NONE),
        PAD_NC(GPP_S3, NONE),
        PAD_NC(GPP_S6, NONE),
        PAD_NC(GPP_S7, NONE),
};
 
static const struct pad_config sndw_enable_pads[] = {
        PAD_CFG_NF(GPP_S0, NONE, DEEP, NF1),    /* SDW_HP_CLK_R */
        PAD_CFG_NF(GPP_S1, NONE, DEEP, NF1),    /* SDW_HP_DATA_R */
        PAD_CFG_NF(GPP_S4, NONE, DEEP, NF1),    /* SDW_SPKR_CLK */
        PAD_CFG_NF(GPP_S5, NONE, DEEP, NF1),    /* SDW_SPKR_DATA */
};
 
static const struct pad_config sndw_disable_pads[] = {
        PAD_NC(GPP_S0, NONE),
        PAD_NC(GPP_S1, NONE),
        PAD_NC(GPP_S4, NONE),
        PAD_NC(GPP_S5, NONE),
};
 
static const struct pad_config i2s0_enable_pads[] = {
        PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),    /* I2S_HP_SCLK_R */
        PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),    /* I2S_HP_SFRM_R */
        PAD_CFG_NF(GPP_R2, DN_20K, DEEP, NF2),  /* I2S_PCH_TX_HP_RX_STRAP */
        PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),    /* I2S_PCH_RX_HP_TX */
};
 
static const struct pad_config i2s2_enable_pads[] = {
        PAD_CFG_NF(GPP_R4, NONE, DEEP, NF2),    /* I2S_SPKR_SCLK_R */
        PAD_CFG_NF(GPP_R5, NONE, DEEP, NF2),    /* I2S_SPKR_SFRM_R */
        PAD_CFG_NF(GPP_R6, NONE, DEEP, NF2),    /* I2S_PCH_TX_SPKR_RX_R */
        PAD_CFG_NF(GPP_R7, NONE, DEEP, NF2),    /* I2S_PCH_RX_SPKR_TX */
};
 
static const struct pad_config i2s0_disable_pads[] = {
        PAD_NC(GPP_R0, NONE),
        PAD_NC(GPP_R1, NONE),
        PAD_NC(GPP_R2, NONE),
        PAD_NC(GPP_R3, NONE),
};
 
static const struct pad_config i2s2_disable_pads[] = {
        PAD_NC(GPP_R4, NONE),
        PAD_NC(GPP_R5, NONE),
        PAD_NC(GPP_R6, NONE),
        PAD_NC(GPP_R7, NONE),
};
 
static const struct pad_config bt_i2s_enable_pads[] = {
        PAD_CFG_NF(GPP_VGPIO_30, NONE, DEEP, NF3),      /* BT_I2S_BCLK */
        PAD_CFG_NF(GPP_VGPIO_31, NONE, DEEP, NF3),      /* BT_I2S_SYNC */
        PAD_CFG_NF(GPP_VGPIO_32, NONE, DEEP, NF3),      /* BT_I2S_SDO */
        PAD_CFG_NF(GPP_VGPIO_33, NONE, DEEP, NF3),      /* BT_I2S_SDI */
        PAD_CFG_NF(GPP_VGPIO_34, NONE, DEEP, NF1),      /* SSP2_SCLK */
        PAD_CFG_NF(GPP_VGPIO_35, NONE, DEEP, NF1),      /* SSP2_SFRM */
        PAD_CFG_NF(GPP_VGPIO_36, NONE, DEEP, NF1),      /* SSP_TXD */
        PAD_CFG_NF(GPP_VGPIO_37, NONE, DEEP, NF1),      /* SSP_RXD */
};
 
static const struct pad_config bt_i2s_disable_pads[] = {
        PAD_NC(GPP_VGPIO_30, NONE),
        PAD_NC(GPP_VGPIO_31, NONE),
        PAD_NC(GPP_VGPIO_32, NONE),
        PAD_NC(GPP_VGPIO_33, NONE),
        PAD_NC(GPP_VGPIO_34, NONE),
        PAD_NC(GPP_VGPIO_35, NONE),
        PAD_NC(GPP_VGPIO_36, NONE),
        PAD_NC(GPP_VGPIO_37, NONE),
};
 
static void enable_i2s(void)
{
        gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
        gpio_configure_pads(i2s0_enable_pads, ARRAY_SIZE(i2s0_enable_pads));
        gpio_configure_pads(i2s2_enable_pads, ARRAY_SIZE(i2s2_enable_pads));
        gpio_configure_pads(sndw_disable_pads, ARRAY_SIZE(sndw_disable_pads));
}
 
static void fw_config_handle(void *unused)
{
        if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
                printk(BIOS_INFO, "Disable audio related GPIO pins.\n");
                gpio_configure_pads(i2s0_disable_pads, ARRAY_SIZE(i2s0_disable_pads));
                gpio_configure_pads(i2s2_disable_pads, ARRAY_SIZE(i2s2_disable_pads));
                gpio_configure_pads(dmic_disable_pads, ARRAY_SIZE(dmic_disable_pads));
                gpio_configure_pads(sndw_disable_pads, ARRAY_SIZE(sndw_disable_pads));
                return;
        }
 
        if (fw_config_probe(FW_CONFIG(AUDIO, MAX98373_ALC5682_SNDW))) {
                printk(BIOS_INFO, "Configure audio over SoundWire with MAX98373 ALC5682.\n");
                gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
                gpio_configure_pads(sndw_enable_pads, ARRAY_SIZE(sndw_enable_pads));
                printk(BIOS_INFO, "BT offload enabled\n");
                gpio_configure_pads(i2s0_enable_pads, ARRAY_SIZE(i2s0_enable_pads));
                gpio_configure_pads(i2s2_disable_pads, ARRAY_SIZE(i2s2_disable_pads));
                gpio_configure_pads(bt_i2s_enable_pads, ARRAY_SIZE(bt_i2s_enable_pads));
        } else {
                printk(BIOS_INFO, "BT offload disabled\n");
                gpio_configure_pads(i2s0_disable_pads, ARRAY_SIZE(i2s0_disable_pads));
                gpio_configure_pads(i2s2_disable_pads, ARRAY_SIZE(i2s2_disable_pads));
                gpio_configure_pads(bt_i2s_disable_pads, ARRAY_SIZE(bt_i2s_disable_pads));
        }
 
        if (fw_config_probe(FW_CONFIG(AUDIO, MAX98357_ALC5682I_I2S))) {
                printk(BIOS_INFO, "Configure audio over I2S with MAX98357 ALC5682I.\n");
                enable_i2s();
        }
 
        if (fw_config_probe(FW_CONFIG(AUDIO, ALC1019_NAU88L25B_I2S))) {
                printk(BIOS_INFO, "Configure audio over I2S with ALC1019 NAU88L25B.\n");
                enable_i2s();
        }
}
BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);