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