kernel_samsung_a34x-permissive/sound/soc/mediatek/mt6833/mt6833-afe-gpio.c

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// SPDX-License-Identifier: GPL-2.0
/*
* mt6833-afe-gpio.c -- Mediatek 6833 afe gpio ctrl
*
* Copyright (c) 2020 MediaTek Inc.
* Author: Eason Yen <eason.yen@mediatek.com>
*/
#include <linux/gpio.h>
#include <linux/pinctrl/consumer.h>
#include "mt6833-afe-common.h"
#include "mt6833-afe-gpio.h"
struct pinctrl *aud_pinctrl;
struct audio_gpio_attr {
const char *name;
bool gpio_prepare;
struct pinctrl_state *gpioctrl;
};
static struct audio_gpio_attr aud_gpios[MT6833_AFE_GPIO_GPIO_NUM] = {
[MT6833_AFE_GPIO_DAT_MISO0_OFF] = {"aud_dat_miso0_off", false, NULL},
[MT6833_AFE_GPIO_DAT_MISO0_ON] = {"aud_dat_miso0_on", false, NULL},
[MT6833_AFE_GPIO_DAT_MISO1_OFF] = {"aud_dat_miso1_off", false, NULL},
[MT6833_AFE_GPIO_DAT_MISO1_ON] = {"aud_dat_miso1_on", false, NULL},
[MT6833_AFE_GPIO_DAT_MISO2_OFF] = {"aud_dat_miso2_off", false, NULL},
[MT6833_AFE_GPIO_DAT_MISO2_ON] = {"aud_dat_miso2_on", false, NULL},
[MT6833_AFE_GPIO_DAT_MOSI_OFF] = {"aud_dat_mosi_off", false, NULL},
[MT6833_AFE_GPIO_DAT_MOSI_ON] = {"aud_dat_mosi_on", false, NULL},
[MT6833_AFE_GPIO_I2S0_OFF] = {"aud_gpio_i2s0_off", false, NULL},
[MT6833_AFE_GPIO_I2S0_ON] = {"aud_gpio_i2s0_on", false, NULL},
[MT6833_AFE_GPIO_I2S1_OFF] = {"aud_gpio_i2s1_off", false, NULL},
[MT6833_AFE_GPIO_I2S1_ON] = {"aud_gpio_i2s1_on", false, NULL},
[MT6833_AFE_GPIO_I2S2_OFF] = {"aud_gpio_i2s2_off", false, NULL},
[MT6833_AFE_GPIO_I2S2_ON] = {"aud_gpio_i2s2_on", false, NULL},
[MT6833_AFE_GPIO_I2S3_OFF] = {"aud_gpio_i2s3_off", false, NULL},
[MT6833_AFE_GPIO_I2S3_ON] = {"aud_gpio_i2s3_on", false, NULL},
[MT6833_AFE_GPIO_I2S5_OFF] = {"aud_gpio_i2s5_off", false, NULL},
[MT6833_AFE_GPIO_I2S5_ON] = {"aud_gpio_i2s5_on", false, NULL},
[MT6833_AFE_GPIO_VOW_DAT_OFF] = {"vow_dat_miso_off", false, NULL},
[MT6833_AFE_GPIO_VOW_DAT_ON] = {"vow_dat_miso_on", false, NULL},
[MT6833_AFE_GPIO_VOW_CLK_OFF] = {"vow_clk_miso_off", false, NULL},
[MT6833_AFE_GPIO_VOW_CLK_ON] = {"vow_clk_miso_on", false, NULL},
};
static DEFINE_MUTEX(gpio_request_mutex);
int mt6833_afe_gpio_init(struct mtk_base_afe *afe)
{
int ret;
int i = 0;
aud_pinctrl = devm_pinctrl_get(afe->dev);
if (IS_ERR(aud_pinctrl)) {
ret = PTR_ERR(aud_pinctrl);
dev_err(afe->dev, "%s(), ret %d, cannot get aud_pinctrl!\n",
__func__, ret);
return -ENODEV;
}
for (i = 0; i < ARRAY_SIZE(aud_gpios); i++) {
aud_gpios[i].gpioctrl = pinctrl_lookup_state(aud_pinctrl,
aud_gpios[i].name);
if (IS_ERR(aud_gpios[i].gpioctrl)) {
ret = PTR_ERR(aud_gpios[i].gpioctrl);
dev_err(afe->dev, "%s(), pinctrl_lookup_state %s fail, ret %d\n",
__func__, aud_gpios[i].name, ret);
} else {
aud_gpios[i].gpio_prepare = true;
}
}
/* gpio status init */
mt6833_afe_gpio_request(afe, false, MT6833_DAI_ADDA, 0);
mt6833_afe_gpio_request(afe, false, MT6833_DAI_ADDA, 1);
mt6833_afe_gpio_request(afe, false, MT6833_DAI_I2S_0, 0);
mt6833_afe_gpio_request(afe, false, MT6833_DAI_I2S_3, 0);
return 0;
}
bool mt6833_afe_gpio_is_prepare(enum mt6833_afe_gpio type)
{
return aud_gpios[type].gpio_prepare;
}
static int mt6833_afe_gpio_select(struct mtk_base_afe *afe,
enum mt6833_afe_gpio type)
{
int ret = 0;
if (type < 0 || type >= MT6833_AFE_GPIO_GPIO_NUM) {
dev_err(afe->dev, "%s(), error, invaild gpio type %d\n",
__func__, type);
return -EINVAL;
}
if (!aud_gpios[type].gpio_prepare) {
dev_warn(afe->dev, "%s(), error, gpio type %d not prepared\n",
__func__, type);
return -EIO;
}
ret = pinctrl_select_state(aud_pinctrl,
aud_gpios[type].gpioctrl);
if (ret) {
dev_err(afe->dev, "%s(), error, can not set gpio type %d\n",
__func__, type);
AUDIO_AEE("can not set gpio type");
}
return ret;
}
static int mt6833_afe_gpio_adda_dl(struct mtk_base_afe *afe, bool enable)
{
if (enable) {
return mt6833_afe_gpio_select(afe,
MT6833_AFE_GPIO_DAT_MOSI_ON);
} else {
return mt6833_afe_gpio_select(afe,
MT6833_AFE_GPIO_DAT_MOSI_OFF);
}
}
static int mt6833_afe_gpio_adda_ul(struct mtk_base_afe *afe, bool enable)
{
int ret = 0;
if (mt6833_afe_gpio_is_prepare(MT6833_AFE_GPIO_DAT_MISO0_ON))
ret = mt6833_afe_gpio_select(afe,
enable ? MT6833_AFE_GPIO_DAT_MISO0_ON :
MT6833_AFE_GPIO_DAT_MISO0_OFF);
/* if error happened, skip miso1 select */
if (ret)
return ret;
if (mt6833_afe_gpio_is_prepare(MT6833_AFE_GPIO_DAT_MISO1_ON))
ret = mt6833_afe_gpio_select(afe,
enable ? MT6833_AFE_GPIO_DAT_MISO1_ON :
MT6833_AFE_GPIO_DAT_MISO1_OFF);
return ret;
}
int mt6833_afe_gpio_request(struct mtk_base_afe *afe, bool enable,
int dai, int uplink)
{
mutex_lock(&gpio_request_mutex);
switch (dai) {
case MT6833_DAI_ADDA:
if (uplink)
mt6833_afe_gpio_adda_ul(afe, enable);
else
mt6833_afe_gpio_adda_dl(afe, enable);
break;
case MT6833_DAI_I2S_0:
if (enable)
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S0_ON);
else
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S0_OFF);
break;
case MT6833_DAI_I2S_1:
if (enable)
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S1_ON);
else
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S1_OFF);
break;
case MT6833_DAI_I2S_2:
if (enable)
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S2_ON);
else
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S2_OFF);
break;
case MT6833_DAI_I2S_3:
if (enable)
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S3_ON);
else
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S3_OFF);
break;
case MT6833_DAI_I2S_5:
if (enable)
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S5_ON);
else
mt6833_afe_gpio_select(afe, MT6833_AFE_GPIO_I2S5_OFF);
break;
case MT6833_DAI_VOW:
if (enable) {
mt6833_afe_gpio_select(afe,
MT6833_AFE_GPIO_VOW_CLK_ON);
mt6833_afe_gpio_select(afe,
MT6833_AFE_GPIO_VOW_DAT_ON);
} else {
mt6833_afe_gpio_select(afe,
MT6833_AFE_GPIO_VOW_CLK_OFF);
mt6833_afe_gpio_select(afe,
MT6833_AFE_GPIO_VOW_DAT_OFF);
}
break;
default:
mutex_unlock(&gpio_request_mutex);
dev_warn(afe->dev, "%s(), invalid dai %d\n", __func__, dai);
AUDIO_AEE("invalid dai");
return -EINVAL;
}
mutex_unlock(&gpio_request_mutex);
return 0;
}