1 files changed, 133 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index f0b751bf1d6c..02bc8bd7caeb 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/gpio.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
@@ -3160,6 +3161,135 @@ static int rt5677_set_bias_level(struct snd_soc_codec *codec,
         return 0;
 }
 
+#ifdef CONFIG_GPIOLIB
+static inline struct rt5677_priv *gpio_to_rt5677(struct gpio_chip *chip)
+{
+        return container_of(chip, struct rt5677_priv, gpio_chip);
+}
+
+static void rt5677_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+        struct rt5677_priv *rt5677 = gpio_to_rt5677(chip);
+
+        switch (offset) {
+        case RT5677_GPIO1 ... RT5677_GPIO5:
+                regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL2,
+                        0x1 << (offset * 3 + 1), !!value << (offset * 3 + 1));
+                break;
+
+        case RT5677_GPIO6:
+                regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL3,
+                        RT5677_GPIO6_OUT_MASK, !!value << RT5677_GPIO6_OUT_SFT);
+                break;
+
+        default:
+                break;
+        }
+}
+
+static int rt5677_gpio_direction_out(struct gpio_chip *chip,
+                                     unsigned offset, int value)
+{
+        struct rt5677_priv *rt5677 = gpio_to_rt5677(chip);
+
+        switch (offset) {
+        case RT5677_GPIO1 ... RT5677_GPIO5:
+                regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL2,
+                        0x3 << (offset * 3 + 1),
+                        (0x2 | !!value) << (offset * 3 + 1));
+                break;
+
+        case RT5677_GPIO6:
+                regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL3,
+                        RT5677_GPIO6_DIR_MASK | RT5677_GPIO6_OUT_MASK,
+                        RT5677_GPIO6_DIR_OUT | !!value << RT5677_GPIO6_OUT_SFT);
+                break;
+
+        default:
+                break;
+        }
+
+        return 0;
+}
+
+static int rt5677_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+        struct rt5677_priv *rt5677 = gpio_to_rt5677(chip);
+        int value, ret;
+
+        ret = regmap_read(rt5677->regmap, RT5677_GPIO_ST, &value);
+        if (ret < 0)
+                return ret;
+
+        return (value & (0x1 << offset)) >> offset;
+}
+
+static int rt5677_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
+{
+        struct rt5677_priv *rt5677 = gpio_to_rt5677(chip);
+
+        switch (offset) {
+        case RT5677_GPIO1 ... RT5677_GPIO5:
+                regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL2,
+                        0x1 << (offset * 3 + 2), 0x0);
+                break;
+
+        case RT5677_GPIO6:
+                regmap_update_bits(rt5677->regmap, RT5677_GPIO_CTRL3,
+                        RT5677_GPIO6_DIR_MASK, RT5677_GPIO6_DIR_IN);
+                break;
+
+        default:
+                break;
+        }
+
+        return 0;
+}
+
+static struct gpio_chip rt5677_template_chip = {
+        .label                  = "rt5677",
+        .owner                  = THIS_MODULE,
+        .direction_output       = rt5677_gpio_direction_out,
+        .set                    = rt5677_gpio_set,
+        .direction_input        = rt5677_gpio_direction_in,
+        .get                    = rt5677_gpio_get,
+        .can_sleep              = 1,
+};
+
+static void rt5677_init_gpio(struct i2c_client *i2c)
+{
+        struct rt5677_priv *rt5677 = i2c_get_clientdata(i2c);
+        int ret;
+
+        rt5677->gpio_chip = rt5677_template_chip;
+        rt5677->gpio_chip.ngpio = RT5677_GPIO_NUM;
+        rt5677->gpio_chip.dev = &i2c->dev;
+        rt5677->gpio_chip.base = -1;
+
+        ret = gpiochip_add(&rt5677->gpio_chip);
+        if (ret != 0)
+                dev_err(&i2c->dev, "Failed to add GPIOs: %d\n", ret);
+}
+
+static void rt5677_free_gpio(struct i2c_client *i2c)
+{
+        struct rt5677_priv *rt5677 = i2c_get_clientdata(i2c);
+        int ret;
+
+        ret = gpiochip_remove(&rt5677->gpio_chip);
+        if (ret != 0)
+                dev_err(&i2c->dev, "Failed to remove GPIOs: %d\n", ret);
+}
+#else
+static void rt5677_init_gpio(struct i2c_client *i2c)
+{
+}
+
+static void rt5677_free_gpio(struct i2c_client *i2c)
+{
+}
+#endif
+
 static int rt5677_probe(struct snd_soc_codec *codec)
 {
         struct rt5677_priv *rt5677 = snd_soc_codec_get_drvdata(codec);
@@ -3422,6 +3552,8 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
                                         RT5677_GPIO5_DIR_OUT);
         }
 
+        rt5677_init_gpio(i2c);
+
         return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt5677,
                                       rt5677_dai, ARRAY_SIZE(rt5677_dai));
 }
@@ -3429,6 +3561,7 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
 static int rt5677_i2c_remove(struct i2c_client *i2c)
 {
         snd_soc_unregister_codec(&i2c->dev);
+        rt5677_free_gpio(i2c);
 
         return 0;
 }