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mb/google/rex/var/screebo: set audio GPIO pins based on fw_config 

Enable BT offload when I2S option is selected for screebo.

BUG=b:275538390
TEST=Verified audio playback using BT speaker/headset in I2S mode on google/screebo.

Fixes: https://review.coreboot.org/c/coreboot/+/77755
Change-Id: I7ebe8e28d35428ce2fb8129dc145fec9ac60f9da
Signed-off-by: Terry Cheong <htcheong@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79378
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Terry Cheong 2023-12-07 19:39:41 +08:00 committed by Felix Held
parent c6fd32d131
commit 03807acfa9
2 changed files with 88 additions and 0 deletions
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1
src/mainboard/google/rex/variants/screebo/Makefile.inc
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@ -6,3 +6,4 @@ romstage-y += gpio.c
romstage-y += memory.c
ramstage-y += gpio.c
ramstage-y += variant.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c

87
src/mainboard/google/rex/variants/screebo/fw_config.c Normal file
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@ -0,0 +1,87 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <baseboard/variants.h>
#include <bootstate.h>
#include <console/console.h>
#include <fw_config.h>
#include <gpio.h>
#define GPIO_PADBASED_OVERRIDE(b, a) gpio_padbased_override(b, a, ARRAY_SIZE(a))
static const struct pad_config dmic_disable_pads[] = {
PAD_NC(GPP_S02, NONE),
PAD_NC(GPP_S03, NONE),
PAD_NC(GPP_S06, NONE),
PAD_NC(GPP_S07, NONE),
};
static const struct pad_config i2s_disable_pads[] = {
PAD_NC(GPP_D09, NONE),
PAD_NC(GPP_D10, NONE),
PAD_NC(GPP_D11, NONE),
PAD_NC(GPP_D12, DN_20K),
PAD_NC(GPP_D13, NONE),
PAD_NC(GPP_D14, NONE),
PAD_NC(GPP_D15, NONE),
PAD_NC(GPP_D16, NONE),
PAD_NC(GPP_D17, NONE),
};
static const struct pad_config bt_i2s_enable_pads[] = {
/* GPP_V30 : [] ==> BT_I2S_BCLK */
PAD_CFG_NF(GPP_VGPIO30, NONE, DEEP, NF2),
/* GPP_V31 : [] ==> BT_I2S_SYNC */
PAD_CFG_NF(GPP_VGPIO31, NONE, DEEP, NF2),
/* GPP_V32 : [] ==> BT_I2S_SDO */
PAD_CFG_NF(GPP_VGPIO32, NONE, DEEP, NF2),
/* GPP_V33 : [] ==> BT_I2S_SDI */
PAD_CFG_NF(GPP_VGPIO33, NONE, DEEP, NF2),
/* GPP_V34 : [] ==> SSP2_SCLK */
PAD_CFG_NF(GPP_VGPIO34, NONE, DEEP, NF1),
/* GPP_V35 : [] ==> SSP2_SFRM */
PAD_CFG_NF(GPP_VGPIO35, NONE, DEEP, NF1),
/* GPP_V36 : [] ==> SSP_TXD */
PAD_CFG_NF(GPP_VGPIO36, NONE, DEEP, NF1),
/* GPP_V37 : [] ==> SSP_RXD */
PAD_CFG_NF(GPP_VGPIO37, NONE, DEEP, NF1),
};
static const struct pad_config bt_i2s_disable_pads[] = {
/* GPP_V30 : [] ==> BT_I2S_BCLK */
PAD_NC(GPP_VGPIO30, NONE),
/* GPP_V31 : [] ==> BT_I2S_SYNC */
PAD_NC(GPP_VGPIO31, NONE),
/* GPP_V32 : [] ==> BT_I2S_SDO */
PAD_NC(GPP_VGPIO32, NONE),
/* GPP_V33 : [] ==> BT_I2S_SDI */
PAD_NC(GPP_VGPIO33, NONE),
/* GPP_V34 : [] ==> SSP2_SCLK */
PAD_NC(GPP_VGPIO34, NONE),
/* GPP_V35 : [] ==> SSP2_SFRM */
PAD_NC(GPP_VGPIO35, NONE),
/* GPP_V36 : [] ==> SSP_TXD */
PAD_NC(GPP_VGPIO36, NONE),
/* GPP_V37 : [] ==> SSP_RXD */
PAD_NC(GPP_VGPIO37, NONE),
};
void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
{
if (!fw_config_is_provisioned()) {
GPIO_PADBASED_OVERRIDE(padbased_table, i2s_disable_pads);
GPIO_PADBASED_OVERRIDE(padbased_table, dmic_disable_pads);
GPIO_PADBASED_OVERRIDE(padbased_table, bt_i2s_disable_pads);
return;
}
if (fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
printk(BIOS_INFO, "Configure GPIOs for no audio.\n");
GPIO_PADBASED_OVERRIDE(padbased_table, i2s_disable_pads);
GPIO_PADBASED_OVERRIDE(padbased_table, dmic_disable_pads);
GPIO_PADBASED_OVERRIDE(padbased_table, bt_i2s_disable_pads);
} else if (fw_config_probe(FW_CONFIG(AUDIO, ALC1019_ALC5682I_I2S))) {
printk(BIOS_INFO, "Configure GPIOs for BT offload mode.\n");
GPIO_PADBASED_OVERRIDE(padbased_table, bt_i2s_enable_pads);
}
}