src/mainboard/google/brya/variants/kano/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_R4, NONE, DEEP, NF3),    /* DMIC_CLK0_R */
  10         PAD_CFG_NF(GPP_R5, NONE, DEEP, NF3),    /* DMIC_DATA0_R */
  11         PAD_CFG_NF(GPP_R6, NONE, DEEP, NF3),    /* DMIC_CLK1_R */
  12         PAD_CFG_NF(GPP_R7, NONE, DEEP, NF3),    /* DMIC_DATA1_R */
  13 };
  14
  15 static const struct pad_config dmic_disable_pads[] = {
  16         PAD_NC(GPP_R4, NONE),
  17         PAD_NC(GPP_R5, NONE),
  18         PAD_NC(GPP_R6, NONE),
  19         PAD_NC(GPP_R7, NONE),
  20 };
  21
  22 static const struct pad_config i2s_enable_pads[] = {
  23         PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),    /* I2S_HP_SCLK_R */
  24         PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),    /* I2S_HP_SFRM_R */
  25         PAD_CFG_NF(GPP_R2, DN_20K, DEEP, NF2),  /* I2S_PCH_TX_HP_RX_STRAP */
  26         PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),    /* I2S_PCH_RX_HP_TX */
  27         PAD_CFG_NF(GPP_S0, NONE, DEEP, NF4),    /* I2S_SPKR_SCLK_R */
  28         PAD_CFG_NF(GPP_S1, NONE, DEEP, NF4),    /* I2S_SPKR_SFRM_R */
  29         PAD_CFG_NF(GPP_S2, NONE, DEEP, NF4),    /* I2S_PCH_TX_SPKR_RX_R */
  30         PAD_CFG_NF(GPP_S3, NONE, DEEP, NF4),    /* I2S_PCH_RX_SPKR_TX */
  31 };
  32
  33 static const struct pad_config i2s_disable_pads[] = {
  34         PAD_NC(GPP_R0, NONE),
  35         PAD_NC(GPP_R1, NONE),
  36         PAD_NC(GPP_R2, NONE),
  37         PAD_NC(GPP_R3, NONE),
  38         PAD_NC(GPP_S0, NONE),
  39         PAD_NC(GPP_S1, NONE),
  40         PAD_NC(GPP_S2, NONE),
  41         PAD_NC(GPP_S3, NONE),
  42 };
  43
  44 static const struct pad_config bt_i2s_enable_pads[] = {
  45         PAD_CFG_NF(GPP_VGPIO_30, NONE, DEEP, NF3),      /* BT_I2S_BCLK */
  46         PAD_CFG_NF(GPP_VGPIO_31, NONE, DEEP, NF3),      /* BT_I2S_SYNC */
  47         PAD_CFG_NF(GPP_VGPIO_32, NONE, DEEP, NF3),      /* BT_I2S_SDO */
  48         PAD_CFG_NF(GPP_VGPIO_33, NONE, DEEP, NF3),      /* BT_I2S_SDI */
  49         PAD_CFG_NF(GPP_VGPIO_34, NONE, DEEP, NF1),      /* SSP2_SCLK */
  50         PAD_CFG_NF(GPP_VGPIO_35, NONE, DEEP, NF1),      /* SSP2_SFRM */
  51         PAD_CFG_NF(GPP_VGPIO_36, NONE, DEEP, NF1),      /* SSP_TXD */
  52         PAD_CFG_NF(GPP_VGPIO_37, NONE, DEEP, NF1),      /* SSP_RXD */
  53 };
  54
  55 static const struct pad_config bt_i2s_disable_pads[] = {
  56         PAD_NC(GPP_VGPIO_30, NONE),
  57         PAD_NC(GPP_VGPIO_31, NONE),
  58         PAD_NC(GPP_VGPIO_32, NONE),
  59         PAD_NC(GPP_VGPIO_33, NONE),
  60         PAD_NC(GPP_VGPIO_34, NONE),
  61         PAD_NC(GPP_VGPIO_35, NONE),
  62         PAD_NC(GPP_VGPIO_36, NONE),
  63         PAD_NC(GPP_VGPIO_37, NONE),
  64 };
  65
  66 static void fw_config_handle(void *unused)
  67 {
  68         if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
  69                 printk(BIOS_INFO, "Disable audio related GPIO pins.\n");
  70                 gpio_configure_pads(i2s_disable_pads, ARRAY_SIZE(i2s_disable_pads));
  71                 gpio_configure_pads(dmic_disable_pads, ARRAY_SIZE(dmic_disable_pads));
  72                 gpio_configure_pads(bt_i2s_disable_pads, ARRAY_SIZE(bt_i2s_disable_pads));
  73                 return;
  74         }
  75
  76         if (fw_config_probe(FW_CONFIG(AUDIO, MAX98373_NAU88L25B_I2S))) {
  77                 printk(BIOS_INFO, "Configure audio over I2S with MAX98373 NAU88L25B.\n");
  78                 gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
  79                 gpio_configure_pads(i2s_enable_pads, ARRAY_SIZE(i2s_enable_pads));
  80                 printk(BIOS_INFO, "BT offload enabled\n");
  81                 gpio_configure_pads(bt_i2s_enable_pads, ARRAY_SIZE(bt_i2s_enable_pads));
  82         } else {
  83                 printk(BIOS_INFO, "BT offload disabled\n");
  84                 gpio_configure_pads(bt_i2s_disable_pads, ARRAY_SIZE(bt_i2s_disable_pads));
  85         }
  86 }
  87 BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);