src/mainboard/google/brya/variants/taeko4es/fw_config.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <bootstate.h>
   4 #include <console/console.h>
   5 #include <fw_config.h>
   6 #include <gpio.h>
   7
   8 static const struct pad_config dmic_enable_pads[] = {
   9         PAD_CFG_NF(GPP_S2, NONE, DEEP, NF2),    /* DMIC_CLK0_R */
  10         PAD_CFG_NF(GPP_S3, NONE, DEEP, NF2),    /* DMIC_DATA0_R */
  11
  12 };
  13
  14 static const struct pad_config dmic_disable_pads[] = {
  15         PAD_NC(GPP_S2, NONE),
  16         PAD_NC(GPP_S3, NONE),
  17 };
  18
  19 static const struct pad_config i2s_enable_pads[] = {
  20         PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),    /* I2S_HP_SCLK_R */
  21         PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),    /* I2S_HP_SFRM_R */
  22         PAD_CFG_NF(GPP_R2, DN_20K, DEEP, NF2),  /* I2S_PCH_TX_HP_RX_STRAP */
  23         PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),    /* I2S_PCH_RX_HP_TX */
  24         PAD_CFG_NF(GPP_R4, NONE, DEEP, NF2),    /* I2S_SPKR_SCLK_R */
  25         PAD_CFG_NF(GPP_R5, NONE, DEEP, NF2),    /* I2S_SPKR_SFRM_R */
  26         PAD_CFG_NF(GPP_R6, NONE, DEEP, NF2),    /* I2S_PCH_TX_SPKR_RX_R */
  27         PAD_NC(GPP_R7, NONE),                   /* I2S_PCH_RX_SPKR_TX */
  28 };
  29
  30 static const struct pad_config i2s_disable_pads[] = {
  31         PAD_NC(GPP_R0, NONE),
  32         PAD_NC(GPP_R1, NONE),
  33         PAD_NC(GPP_R2, NONE),
  34         PAD_NC(GPP_R3, NONE),
  35         PAD_NC(GPP_R4, NONE),
  36         PAD_NC(GPP_R5, NONE),
  37         PAD_NC(GPP_R6, NONE),
  38         PAD_NC(GPP_R7, NONE),
  39 };
  40
  41 static void fw_config_handle(void *unused)
  42 {
  43         if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
  44                 printk(BIOS_INFO, "Disable audio related GPIO pins.\n");
  45                 gpio_configure_pads(i2s_disable_pads, ARRAY_SIZE(i2s_disable_pads));
  46                 gpio_configure_pads(dmic_disable_pads, ARRAY_SIZE(dmic_disable_pads));
  47                 return;
  48         }
  49
  50         if (fw_config_probe(FW_CONFIG(AUDIO, AUDIO_MAX98357_ALC5682I_I2S))) {
  51                 printk(BIOS_INFO, "Configure audio over I2S with MAX98357 ALC5682I.\n");
  52                 gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
  53                 gpio_configure_pads(i2s_enable_pads, ARRAY_SIZE(i2s_enable_pads));
  54         }
  55
  56         if (fw_config_probe(FW_CONFIG(AUDIO, AUDIO_MAX98357_ALC5682I_VS_I2S))) {
  57                 printk(BIOS_INFO, "Configure audio over I2S with MAX98357 ALC5682I-VS.\n");
  58                 gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
  59                 gpio_configure_pads(i2s_enable_pads, ARRAY_SIZE(i2s_enable_pads));
  60         }
  61 }
  62 BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);