src/mainboard/google/brya/variants/kuldax/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_R6, NONE, DEEP, NF3),    /* DMIC_CLK1_R */
  10         PAD_CFG_NF(GPP_R7, NONE, DEEP, NF3),    /* DMIC_DATA1_R */
  11 };
  12
  13 static const struct pad_config dmic_disable_pads[] = {
  14         PAD_NC(GPP_R6, NONE),
  15         PAD_NC(GPP_R7, NONE),
  16 };
  17
  18 static const struct pad_config i2s_enable_pads[] = {
  19         PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),    /* I2S_HP_SCLK_R */
  20         PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),    /* I2S_HP_SFRM_R */
  21         PAD_CFG_NF(GPP_R2, DN_20K, DEEP, NF2),  /* I2S_PCH_TX_HP_RX_STRAP */
  22         PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),    /* I2S_PCH_RX_HP_TX */
  23 };
  24
  25 static const struct pad_config i2s_disable_pads[] = {
  26         PAD_NC(GPP_R0, NONE),
  27         PAD_NC(GPP_R1, NONE),
  28         PAD_NC(GPP_R2, NONE),
  29         PAD_NC(GPP_R3, NONE),
  30 };
  31
  32 static const struct pad_config bt_i2s_enable_pads[] = {
  33         PAD_CFG_NF(GPP_VGPIO_30, NONE, DEEP, NF3),      /* BT_I2S_BCLK */
  34         PAD_CFG_NF(GPP_VGPIO_31, NONE, DEEP, NF3),      /* BT_I2S_SYNC */
  35         PAD_CFG_NF(GPP_VGPIO_32, NONE, DEEP, NF3),      /* BT_I2S_SDO */
  36         PAD_CFG_NF(GPP_VGPIO_33, NONE, DEEP, NF3),      /* BT_I2S_SDI */
  37         PAD_CFG_NF(GPP_VGPIO_34, NONE, DEEP, NF1),      /* SSP2_SCLK */
  38         PAD_CFG_NF(GPP_VGPIO_35, NONE, DEEP, NF1),      /* SSP2_SFRM */
  39         PAD_CFG_NF(GPP_VGPIO_36, NONE, DEEP, NF1),      /* SSP_TXD */
  40         PAD_CFG_NF(GPP_VGPIO_37, NONE, DEEP, NF1),      /* SSP_RXD */
  41 };
  42
  43 static const struct pad_config bt_i2s_disable_pads[] = {
  44         PAD_NC(GPP_VGPIO_30, NONE),
  45         PAD_NC(GPP_VGPIO_31, NONE),
  46         PAD_NC(GPP_VGPIO_32, NONE),
  47         PAD_NC(GPP_VGPIO_33, NONE),
  48         PAD_NC(GPP_VGPIO_34, NONE),
  49         PAD_NC(GPP_VGPIO_35, NONE),
  50         PAD_NC(GPP_VGPIO_36, NONE),
  51         PAD_NC(GPP_VGPIO_37, NONE),
  52 };
  53
  54 static void fw_config_handle(void *unused)
  55 {
  56         if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
  57                 printk(BIOS_INFO, "Disable audio related GPIO pins.\n");
  58                 gpio_configure_pads(i2s_disable_pads, ARRAY_SIZE(i2s_disable_pads));
  59                 gpio_configure_pads(dmic_disable_pads, ARRAY_SIZE(dmic_disable_pads));
  60                 gpio_configure_pads(bt_i2s_disable_pads, ARRAY_SIZE(bt_i2s_disable_pads));
  61                 return;
  62         }
  63
  64         if (fw_config_probe(FW_CONFIG(AUDIO, NAU88L25B_I2S))) {
  65                 printk(BIOS_INFO, "Configure audio over I2S with NAU88L25B.\n");
  66                 gpio_configure_pads(dmic_enable_pads, ARRAY_SIZE(dmic_enable_pads));
  67                 gpio_configure_pads(i2s_enable_pads, ARRAY_SIZE(i2s_enable_pads));
  68                 printk(BIOS_INFO, "BT offload enabled\n");
  69                 gpio_configure_pads(bt_i2s_enable_pads, ARRAY_SIZE(bt_i2s_enable_pads));
  70         } else {
  71                 printk(BIOS_INFO, "BT offload disabled\n");
  72                 gpio_configure_pads(bt_i2s_disable_pads, ARRAY_SIZE(bt_i2s_disable_pads));
  73         }
  74 }
  75 BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);