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Diffstat (limited to 'sound/soc/mediatek/mt8192/mt8192-afe-gpio.c')
-rw-r--r--sound/soc/mediatek/mt8192/mt8192-afe-gpio.c308
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);