diff options
Diffstat (limited to 'sound/soc/mediatek/mt8186/mt8186-afe-gpio.c')
| -rw-r--r-- | sound/soc/mediatek/mt8186/mt8186-afe-gpio.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c b/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c new file mode 100644 index 000000000..eda913fa1 --- /dev/null +++ b/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c @@ -0,0 +1,243 @@ +// 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; +} |