diff options
Diffstat (limited to 'sound/soc/mediatek/mt8192/mt8192-afe-gpio.c')
| -rw-r--r-- | sound/soc/mediatek/mt8192/mt8192-afe-gpio.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/sound/soc/mediatek/mt8192/mt8192-afe-gpio.c b/sound/soc/mediatek/mt8192/mt8192-afe-gpio.c new file mode 100644 index 000000000..165663a78 --- /dev/null +++ b/sound/soc/mediatek/mt8192/mt8192-afe-gpio.c @@ -0,0 +1,308 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// mt8192-afe-gpio.c -- Mediatek 8192 afe gpio ctrl +// +// Copyright (c) 2020 MediaTek Inc. +// Author: Shane Chien <shane.chien@mediatek.com> +// + +#include <linux/gpio.h> +#include <linux/pinctrl/consumer.h> + +#include "mt8192-afe-common.h" +#include "mt8192-afe-gpio.h" + +static struct pinctrl *aud_pinctrl; + +enum mt8192_afe_gpio { + MT8192_AFE_GPIO_DAT_MISO_OFF, + MT8192_AFE_GPIO_DAT_MISO_ON, + MT8192_AFE_GPIO_DAT_MOSI_OFF, + MT8192_AFE_GPIO_DAT_MOSI_ON, + MT8192_AFE_GPIO_DAT_MISO_CH34_OFF, + MT8192_AFE_GPIO_DAT_MISO_CH34_ON, + MT8192_AFE_GPIO_DAT_MOSI_CH34_OFF, + MT8192_AFE_GPIO_DAT_MOSI_CH34_ON, + MT8192_AFE_GPIO_I2S0_OFF, + MT8192_AFE_GPIO_I2S0_ON, + MT8192_AFE_GPIO_I2S1_OFF, + MT8192_AFE_GPIO_I2S1_ON, + MT8192_AFE_GPIO_I2S2_OFF, + MT8192_AFE_GPIO_I2S2_ON, + MT8192_AFE_GPIO_I2S3_OFF, + MT8192_AFE_GPIO_I2S3_ON, + MT8192_AFE_GPIO_I2S5_OFF, + MT8192_AFE_GPIO_I2S5_ON, + MT8192_AFE_GPIO_I2S6_OFF, + MT8192_AFE_GPIO_I2S6_ON, + MT8192_AFE_GPIO_I2S7_OFF, + MT8192_AFE_GPIO_I2S7_ON, + MT8192_AFE_GPIO_I2S8_OFF, + MT8192_AFE_GPIO_I2S8_ON, + MT8192_AFE_GPIO_I2S9_OFF, + MT8192_AFE_GPIO_I2S9_ON, + MT8192_AFE_GPIO_VOW_DAT_OFF, + MT8192_AFE_GPIO_VOW_DAT_ON, + MT8192_AFE_GPIO_VOW_CLK_OFF, + MT8192_AFE_GPIO_VOW_CLK_ON, + MT8192_AFE_GPIO_CLK_MOSI_OFF, + MT8192_AFE_GPIO_CLK_MOSI_ON, + MT8192_AFE_GPIO_TDM_OFF, + MT8192_AFE_GPIO_TDM_ON, + MT8192_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[MT8192_AFE_GPIO_GPIO_NUM] = { + [MT8192_AFE_GPIO_DAT_MISO_OFF] = {"aud_dat_miso_off", false, NULL}, + [MT8192_AFE_GPIO_DAT_MISO_ON] = {"aud_dat_miso_on", false, NULL}, + [MT8192_AFE_GPIO_DAT_MOSI_OFF] = {"aud_dat_mosi_off", false, NULL}, + [MT8192_AFE_GPIO_DAT_MOSI_ON] = {"aud_dat_mosi_on", false, NULL}, + [MT8192_AFE_GPIO_I2S0_OFF] = {"aud_gpio_i2s0_off", false, NULL}, + [MT8192_AFE_GPIO_I2S0_ON] = {"aud_gpio_i2s0_on", false, NULL}, + [MT8192_AFE_GPIO_I2S1_OFF] = {"aud_gpio_i2s1_off", false, NULL}, + [MT8192_AFE_GPIO_I2S1_ON] = {"aud_gpio_i2s1_on", false, NULL}, + [MT8192_AFE_GPIO_I2S2_OFF] = {"aud_gpio_i2s2_off", false, NULL}, + [MT8192_AFE_GPIO_I2S2_ON] = {"aud_gpio_i2s2_on", false, NULL}, + [MT8192_AFE_GPIO_I2S3_OFF] = {"aud_gpio_i2s3_off", false, NULL}, + [MT8192_AFE_GPIO_I2S3_ON] = {"aud_gpio_i2s3_on", false, NULL}, + [MT8192_AFE_GPIO_I2S5_OFF] = {"aud_gpio_i2s5_off", false, NULL}, + [MT8192_AFE_GPIO_I2S5_ON] = {"aud_gpio_i2s5_on", false, NULL}, + [MT8192_AFE_GPIO_I2S6_OFF] = {"aud_gpio_i2s6_off", false, NULL}, + [MT8192_AFE_GPIO_I2S6_ON] = {"aud_gpio_i2s6_on", false, NULL}, + [MT8192_AFE_GPIO_I2S7_OFF] = {"aud_gpio_i2s7_off", false, NULL}, + [MT8192_AFE_GPIO_I2S7_ON] = {"aud_gpio_i2s7_on", false, NULL}, + [MT8192_AFE_GPIO_I2S8_OFF] = {"aud_gpio_i2s8_off", false, NULL}, + [MT8192_AFE_GPIO_I2S8_ON] = {"aud_gpio_i2s8_on", false, NULL}, + [MT8192_AFE_GPIO_I2S9_OFF] = {"aud_gpio_i2s9_off", false, NULL}, + [MT8192_AFE_GPIO_I2S9_ON] = {"aud_gpio_i2s9_on", false, NULL}, + [MT8192_AFE_GPIO_TDM_OFF] = {"aud_gpio_tdm_off", false, NULL}, + [MT8192_AFE_GPIO_TDM_ON] = {"aud_gpio_tdm_on", false, NULL}, + [MT8192_AFE_GPIO_VOW_DAT_OFF] = {"vow_dat_miso_off", false, NULL}, + [MT8192_AFE_GPIO_VOW_DAT_ON] = {"vow_dat_miso_on", false, NULL}, + [MT8192_AFE_GPIO_VOW_CLK_OFF] = {"vow_clk_miso_off", false, NULL}, + [MT8192_AFE_GPIO_VOW_CLK_ON] = {"vow_clk_miso_on", false, NULL}, + [MT8192_AFE_GPIO_DAT_MISO_CH34_OFF] = {"aud_dat_miso_ch34_off", + false, NULL}, + [MT8192_AFE_GPIO_DAT_MISO_CH34_ON] = {"aud_dat_miso_ch34_on", + false, NULL}, + [MT8192_AFE_GPIO_DAT_MOSI_CH34_OFF] = {"aud_dat_mosi_ch34_off", + false, NULL}, + [MT8192_AFE_GPIO_DAT_MOSI_CH34_ON] = {"aud_dat_mosi_ch34_on", + false, NULL}, + [MT8192_AFE_GPIO_CLK_MOSI_OFF] = {"aud_clk_mosi_off", false, NULL}, + [MT8192_AFE_GPIO_CLK_MOSI_ON] = {"aud_clk_mosi_on", false, NULL}, +}; + +static DEFINE_MUTEX(gpio_request_mutex); + +static int mt8192_afe_gpio_select(struct device *dev, + enum mt8192_afe_gpio type) +{ + int ret; + + if (type < 0 || type >= MT8192_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_warn(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_dbg(dev, "%s(), error, can not set gpio type %d\n", + __func__, type); + } + + return ret; +} + +int mt8192_afe_gpio_init(struct device *dev) +{ + int i, 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_dbg(dev, "%s(), pinctrl_lookup_state %s fail, ret %d\n", + __func__, aud_gpios[i].name, ret); + } else { + aud_gpios[i].gpio_prepare = true; + } + } + + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_CLK_MOSI_ON); + + /* gpio status init */ + mt8192_afe_gpio_request(dev, false, MT8192_DAI_ADDA, 0); + mt8192_afe_gpio_request(dev, false, MT8192_DAI_ADDA, 1); + + return 0; +} +EXPORT_SYMBOL(mt8192_afe_gpio_init); + +static int mt8192_afe_gpio_adda_dl(struct device *dev, bool enable) +{ + if (enable) { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MOSI_ON); + } else { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MOSI_OFF); + } +} + +static int mt8192_afe_gpio_adda_ul(struct device *dev, bool enable) +{ + if (enable) { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MISO_ON); + } else { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MISO_OFF); + } +} + +static int mt8192_afe_gpio_adda_ch34_dl(struct device *dev, bool enable) +{ + if (enable) { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MOSI_CH34_ON); + } else { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MOSI_CH34_OFF); + } +} + +static int mt8192_afe_gpio_adda_ch34_ul(struct device *dev, bool enable) +{ + if (enable) { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MISO_CH34_ON); + } else { + return mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_DAT_MISO_CH34_OFF); + } +} + +int mt8192_afe_gpio_request(struct device *dev, bool enable, + int dai, int uplink) +{ + mutex_lock(&gpio_request_mutex); + switch (dai) { + case MT8192_DAI_ADDA: + if (uplink) + mt8192_afe_gpio_adda_ul(dev, enable); + else + mt8192_afe_gpio_adda_dl(dev, enable); + break; + case MT8192_DAI_ADDA_CH34: + if (uplink) + mt8192_afe_gpio_adda_ch34_ul(dev, enable); + else + mt8192_afe_gpio_adda_ch34_dl(dev, enable); + break; + case MT8192_DAI_I2S_0: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S0_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S0_OFF); + break; + case MT8192_DAI_I2S_1: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S1_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S1_OFF); + break; + case MT8192_DAI_I2S_2: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S2_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S2_OFF); + break; + case MT8192_DAI_I2S_3: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S3_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S3_OFF); + break; + case MT8192_DAI_I2S_5: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S5_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S5_OFF); + break; + case MT8192_DAI_I2S_6: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S6_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S6_OFF); + break; + case MT8192_DAI_I2S_7: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S7_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S7_OFF); + break; + case MT8192_DAI_I2S_8: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S8_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S8_OFF); + break; + case MT8192_DAI_I2S_9: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S9_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_I2S9_OFF); + break; + case MT8192_DAI_TDM: + if (enable) + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_TDM_ON); + else + mt8192_afe_gpio_select(dev, MT8192_AFE_GPIO_TDM_OFF); + break; + case MT8192_DAI_VOW: + if (enable) { + mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_VOW_CLK_ON); + mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_VOW_DAT_ON); + } else { + mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_VOW_CLK_OFF); + mt8192_afe_gpio_select(dev, + MT8192_AFE_GPIO_VOW_DAT_OFF); + } + break; + default: + mutex_unlock(&gpio_request_mutex); + dev_warn(dev, "%s(), invalid dai %d\n", __func__, dai); + return -EINVAL; + } + mutex_unlock(&gpio_request_mutex); + + return 0; +} +EXPORT_SYMBOL(mt8192_afe_gpio_request); |