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