| // SPDX-License-Identifier: GPL-2.0 |
| // |
| // mt8186-afe-gpio.c -- Mediatek 8186 afe gpio ctrl |
| // |
| // Copyright (c) 2022 MediaTek Inc. |
| // Author: Jiaxin Yu <jiaxin.yu@mediatek.com> |
| |
| #include <linux/gpio.h> |
| #include <linux/pinctrl/consumer.h> |
| |
| #include "mt8186-afe-common.h" |
| #include "mt8186-afe-gpio.h" |
| |
| struct pinctrl *aud_pinctrl; |
| |
| enum mt8186_afe_gpio { |
| MT8186_AFE_GPIO_CLK_MOSI_OFF, |
| MT8186_AFE_GPIO_CLK_MOSI_ON, |
| MT8186_AFE_GPIO_CLK_MISO_OFF, |
| MT8186_AFE_GPIO_CLK_MISO_ON, |
| MT8186_AFE_GPIO_DAT_MISO_OFF, |
| MT8186_AFE_GPIO_DAT_MISO_ON, |
| MT8186_AFE_GPIO_DAT_MOSI_OFF, |
| MT8186_AFE_GPIO_DAT_MOSI_ON, |
| MT8186_AFE_GPIO_I2S0_OFF, |
| MT8186_AFE_GPIO_I2S0_ON, |
| MT8186_AFE_GPIO_I2S1_OFF, |
| MT8186_AFE_GPIO_I2S1_ON, |
| MT8186_AFE_GPIO_I2S2_OFF, |
| MT8186_AFE_GPIO_I2S2_ON, |
| MT8186_AFE_GPIO_I2S3_OFF, |
| MT8186_AFE_GPIO_I2S3_ON, |
| MT8186_AFE_GPIO_TDM_OFF, |
| MT8186_AFE_GPIO_TDM_ON, |
| MT8186_AFE_GPIO_PCM_OFF, |
| MT8186_AFE_GPIO_PCM_ON, |
| MT8186_AFE_GPIO_GPIO_NUM |
| }; |
| |
| struct audio_gpio_attr { |
| const char *name; |
| bool gpio_prepare; |
| struct pinctrl_state *gpioctrl; |
| }; |
| |
| static struct audio_gpio_attr aud_gpios[MT8186_AFE_GPIO_GPIO_NUM] = { |
| [MT8186_AFE_GPIO_CLK_MOSI_OFF] = {"aud_clk_mosi_off", false, NULL}, |
| [MT8186_AFE_GPIO_CLK_MOSI_ON] = {"aud_clk_mosi_on", false, NULL}, |
| [MT8186_AFE_GPIO_CLK_MISO_OFF] = {"aud_clk_miso_off", false, NULL}, |
| [MT8186_AFE_GPIO_CLK_MISO_ON] = {"aud_clk_miso_on", false, NULL}, |
| [MT8186_AFE_GPIO_DAT_MISO_OFF] = {"aud_dat_miso_off", false, NULL}, |
| [MT8186_AFE_GPIO_DAT_MISO_ON] = {"aud_dat_miso_on", false, NULL}, |
| [MT8186_AFE_GPIO_DAT_MOSI_OFF] = {"aud_dat_mosi_off", false, NULL}, |
| [MT8186_AFE_GPIO_DAT_MOSI_ON] = {"aud_dat_mosi_on", false, NULL}, |
| [MT8186_AFE_GPIO_I2S0_OFF] = {"aud_gpio_i2s0_off", false, NULL}, |
| [MT8186_AFE_GPIO_I2S0_ON] = {"aud_gpio_i2s0_on", false, NULL}, |
| [MT8186_AFE_GPIO_I2S1_OFF] = {"aud_gpio_i2s1_off", false, NULL}, |
| [MT8186_AFE_GPIO_I2S1_ON] = {"aud_gpio_i2s1_on", false, NULL}, |
| [MT8186_AFE_GPIO_I2S2_OFF] = {"aud_gpio_i2s2_off", false, NULL}, |
| [MT8186_AFE_GPIO_I2S2_ON] = {"aud_gpio_i2s2_on", false, NULL}, |
| [MT8186_AFE_GPIO_I2S3_OFF] = {"aud_gpio_i2s3_off", false, NULL}, |
| [MT8186_AFE_GPIO_I2S3_ON] = {"aud_gpio_i2s3_on", false, NULL}, |
| [MT8186_AFE_GPIO_TDM_OFF] = {"aud_gpio_tdm_off", false, NULL}, |
| [MT8186_AFE_GPIO_TDM_ON] = {"aud_gpio_tdm_on", false, NULL}, |
| [MT8186_AFE_GPIO_PCM_OFF] = {"aud_gpio_pcm_off", false, NULL}, |
| [MT8186_AFE_GPIO_PCM_ON] = {"aud_gpio_pcm_on", false, NULL}, |
| }; |
| |
| static DEFINE_MUTEX(gpio_request_mutex); |
| |
| int mt8186_afe_gpio_init(struct device *dev) |
| { |
| int i, j, ret; |
| |
| aud_pinctrl = devm_pinctrl_get(dev); |
| if (IS_ERR(aud_pinctrl)) { |
| ret = PTR_ERR(aud_pinctrl); |
| dev_err(dev, "%s(), ret %d, cannot get aud_pinctrl!\n", |
| __func__, ret); |
| return ret; |
| } |
| |
| 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_info(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 */ |
| for (i = MT8186_DAI_ADDA; i <= MT8186_DAI_TDM_IN; i++) { |
| for (j = 0; j <= 1; j++) |
| mt8186_afe_gpio_request(dev, false, i, j); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(mt8186_afe_gpio_init); |
| |
| static int mt8186_afe_gpio_select(struct device *dev, |
| enum mt8186_afe_gpio type) |
| { |
| int ret = 0; |
| |
| if (type < 0 || type >= MT8186_AFE_GPIO_GPIO_NUM) { |
| dev_err(dev, "%s(), error, invalid gpio type %d\n", |
| __func__, type); |
| return -EINVAL; |
| } |
| |
| if (!aud_gpios[type].gpio_prepare) { |
| dev_err(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(dev, "%s(), error, can not set gpio type %d\n", |
| __func__, type); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int mt8186_afe_gpio_adda_dl(struct device *dev, bool enable) |
| { |
| int ret; |
| |
| if (enable) { |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_CLK_MOSI_ON); |
| if (ret) { |
| dev_err(dev, "%s(), MOSI CLK ON select fail!\n", __func__); |
| return ret; |
| } |
| |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_DAT_MOSI_ON); |
| if (ret) { |
| dev_err(dev, "%s(), MOSI DAT ON select fail!\n", __func__); |
| return ret; |
| } |
| } else { |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_DAT_MOSI_OFF); |
| if (ret) { |
| dev_err(dev, "%s(), MOSI DAT OFF select fail!\n", __func__); |
| return ret; |
| } |
| |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_CLK_MOSI_OFF); |
| if (ret) { |
| dev_err(dev, "%s(), MOSI CLK ON select fail!\n", __func__); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int mt8186_afe_gpio_adda_ul(struct device *dev, bool enable) |
| { |
| int ret; |
| |
| if (enable) { |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_CLK_MISO_ON); |
| if (ret) { |
| dev_err(dev, "%s(), MISO CLK ON select fail!\n", __func__); |
| return ret; |
| } |
| |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_DAT_MISO_ON); |
| if (ret) { |
| dev_err(dev, "%s(), MISO DAT ON select fail!\n", __func__); |
| return ret; |
| } |
| } else { |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_DAT_MISO_OFF); |
| if (ret) { |
| dev_err(dev, "%s(), MISO DAT OFF select fail!\n", __func__); |
| return ret; |
| } |
| |
| ret = mt8186_afe_gpio_select(dev, MT8186_AFE_GPIO_CLK_MISO_OFF); |
| if (ret) { |
| dev_err(dev, "%s(), MISO CLK OFF select fail!\n", __func__); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int mt8186_afe_gpio_request(struct device *dev, bool enable, |
| int dai, int uplink) |
| { |
| enum mt8186_afe_gpio sel; |
| int ret = -EINVAL; |
| |
| mutex_lock(&gpio_request_mutex); |
| |
| switch (dai) { |
| case MT8186_DAI_ADDA: |
| if (uplink) |
| ret = mt8186_afe_gpio_adda_ul(dev, enable); |
| else |
| ret = mt8186_afe_gpio_adda_dl(dev, enable); |
| goto unlock; |
| case MT8186_DAI_I2S_0: |
| sel = enable ? MT8186_AFE_GPIO_I2S0_ON : MT8186_AFE_GPIO_I2S0_OFF; |
| break; |
| case MT8186_DAI_I2S_1: |
| sel = enable ? MT8186_AFE_GPIO_I2S1_ON : MT8186_AFE_GPIO_I2S1_OFF; |
| break; |
| case MT8186_DAI_I2S_2: |
| sel = enable ? MT8186_AFE_GPIO_I2S2_ON : MT8186_AFE_GPIO_I2S2_OFF; |
| break; |
| case MT8186_DAI_I2S_3: |
| sel = enable ? MT8186_AFE_GPIO_I2S3_ON : MT8186_AFE_GPIO_I2S3_OFF; |
| break; |
| case MT8186_DAI_TDM_IN: |
| sel = enable ? MT8186_AFE_GPIO_TDM_ON : MT8186_AFE_GPIO_TDM_OFF; |
| break; |
| case MT8186_DAI_PCM: |
| sel = enable ? MT8186_AFE_GPIO_PCM_ON : MT8186_AFE_GPIO_PCM_OFF; |
| break; |
| default: |
| dev_err(dev, "%s(), invalid dai %d\n", __func__, dai); |
| goto unlock; |
| } |
| |
| ret = mt8186_afe_gpio_select(dev, sel); |
| |
| unlock: |
| mutex_unlock(&gpio_request_mutex); |
| |
| return ret; |
| } |