Hi Sebastian,

Thank you for reviewing the patches.

On 20-06-2016 14:12, Helen Koike wrote:
Add DAPM support and updated rx51 accordingly.
As a consequence:
- the exported function tpa6130a2_stereo_enable is not needed anymore
- the mutex is dealt in the DAPM
- the power state is tracked by the DAPM

Signed-off-by: Lars-Peter Clausen <l...@metafoo.de>
[koike: port for upstream]
Signed-off-by: Helen Koike <helen.ko...@collabora.co.uk>
Tested-By: Sebastian Reichel <s...@kernel.org>
Reviewed-By: Sebastian Reichel <s...@kernel.org>

---

Changes since v1:
- Replace
        +       {"TPA6130A2 HPLEFT", NULL, "LLOUT"},
        +       {"TPA6130A2 HPRIGHT", NULL, "RLOUT"}

        by

        +       {"TPA6130A2 LEFTIN", NULL, "LLOUT"},
        +       {"TPA6130A2 RIGHTIN", NULL, "RLOUT"},
- Add tested-by and reviewed-by from Sebastian
- Add struct device dev* in struct tpa6130a2_data and pass data instead
of dev to tpa6130a2_power function
- remove #include "../codecs/tpa6130a2.h" in rx51.c


I added these changes above and kept your tested-by and reviewed-by, could you please confirm that I can keep them? As I changed more things then you suggested.

Thank you
Helen



  sound/soc/codecs/tpa6130a2.c | 184 ++++++++++++++++++-------------------------
  sound/soc/codecs/tpa6130a2.h |  11 +--
  sound/soc/omap/rx51.c        |  23 ++----
  3 files changed, 88 insertions(+), 130 deletions(-)

diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index 81bf584..cc83870 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -41,79 +41,73 @@ enum tpa_model {
        TPA6140A2,
  };

-static struct i2c_client *tpa6130a2_client;
-
  /* This struct is used to save the context */
  struct tpa6130a2_data {
-       struct mutex mutex;
+       struct device *dev;
        struct regmap *regmap;
        struct regulator *supply;
        int power_gpio;
-       u8 power_state:1;
        enum tpa_model id;
  };

-static int tpa6130a2_power(u8 power)
+static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
  {
-       struct  tpa6130a2_data *data;
-       int     ret = 0;
-
-       if (WARN_ON(!tpa6130a2_client))
-               return -EINVAL;
-       data = i2c_get_clientdata(tpa6130a2_client);
-
-       mutex_lock(&data->mutex);
-       if (power == data->power_state)
-               goto exit;
+       int ret;

-       if (power) {
+       if (enable) {
                ret = regulator_enable(data->supply);
                if (ret != 0) {
-                       dev_err(&tpa6130a2_client->dev,
+                       dev_err(data->dev,
                                "Failed to enable supply: %d\n", ret);
-                       goto exit;
+                       return ret;
                }
                /* Power on */
                if (data->power_gpio >= 0)
                        gpio_set_value(data->power_gpio, 1);
-
-               data->power_state = 1;
-               ret = regcache_sync(data->regmap);
-               if (ret < 0) {
-                       dev_err(&tpa6130a2_client->dev,
-                               "Failed to initialize chip\n");
-                       if (data->power_gpio >= 0)
-                               gpio_set_value(data->power_gpio, 0);
-                       regulator_disable(data->supply);
-                       data->power_state = 0;
-                       goto exit;
-               }
        } else {
-               /* set SWS */
-               regmap_update_bits(data->regmap, TPA6130A2_REG_CONTROL,
-                       TPA6130A2_SWS, TPA6130A2_SWS);
-
                /* Power off */
                if (data->power_gpio >= 0)
                        gpio_set_value(data->power_gpio, 0);

                ret = regulator_disable(data->supply);
                if (ret != 0) {
-                       dev_err(&tpa6130a2_client->dev,
+                       dev_err(data->dev,
                                "Failed to disable supply: %d\n", ret);
-                       goto exit;
+                       return ret;
                }

-               data->power_state = 0;
                /* device regs does not match the cache state anymore */
                regcache_mark_dirty(data->regmap);
        }

-exit:
-       mutex_unlock(&data->mutex);
        return ret;
  }

+static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w,
+                                struct snd_kcontrol *kctrl, int event)
+{
+       struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
+       struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c);
+       int ret;
+
+       /* before widget power up */
+       if (SND_SOC_DAPM_EVENT_ON(event)) {
+               /* Turn on the chip */
+               tpa6130a2_power(data, true);
+               /* Sync the registers */
+               ret = regcache_sync(data->regmap);
+               if (ret < 0) {
+                       dev_err(c->dev, "Failed to initialize chip\n");
+                       tpa6130a2_power(data, false);
+                       return ret;
+               }
+       /* after widget power down */
+       } else
+               tpa6130a2_power(data, false);
+
+       return 0;
+}
+
  /*
   * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
   * down in gain.
@@ -149,57 +143,6 @@ static const struct snd_kcontrol_new tpa6140a2_controls[] 
= {
                       tpa6140_tlv),
  };

-/*
- * Enable or disable channel (left or right)
- * The bit number for mute and amplifier are the same per channel:
- * bit 6: Right channel
- * bit 7: Left channel
- * in both registers.
- */
-static void tpa6130a2_channel_enable(u8 channel, int enable)
-{
-       struct tpa6130a2_data *data = i2c_get_clientdata(tpa6130a2_client);
-
-       if (enable) {
-               /* Enable channel */
-               /* Enable amplifier */
-               regmap_update_bits(data->regmap, TPA6130A2_REG_CONTROL,
-                       channel | TPA6130A2_SWS, channel & ~TPA6130A2_SWS);
-
-               /* Unmute channel */
-               regmap_update_bits(data->regmap, TPA6130A2_REG_VOL_MUTE,
-                                  channel, 0);
-       } else {
-               /* Disable channel */
-               /* Mute channel */
-               regmap_update_bits(data->regmap, TPA6130A2_REG_VOL_MUTE,
-                                  channel, channel);
-
-               /* Disable amplifier */
-               regmap_update_bits(data->regmap, TPA6130A2_REG_CONTROL,
-                                  channel, 0);
-       }
-}
-
-int tpa6130a2_stereo_enable(struct snd_soc_codec *codec, int enable)
-{
-       int ret = 0;
-       if (enable) {
-               ret = tpa6130a2_power(1);
-               if (ret < 0)
-                       return ret;
-               tpa6130a2_channel_enable(TPA6130A2_HP_EN_R | TPA6130A2_HP_EN_L,
-                                        1);
-       } else {
-               tpa6130a2_channel_enable(TPA6130A2_HP_EN_R | TPA6130A2_HP_EN_L,
-                                        0);
-               ret = tpa6130a2_power(0);
-       }
-
-       return ret;
-}
-EXPORT_SYMBOL_GPL(tpa6130a2_stereo_enable);
-
  static int tpa6130a2_component_probe(struct snd_soc_component *component)
  {
        struct tpa6130a2_data *data = snd_soc_component_get_drvdata(component);
@@ -212,9 +155,47 @@ static int tpa6130a2_component_probe(struct 
snd_soc_component *component)
                        tpa6130a2_controls, ARRAY_SIZE(tpa6130a2_controls));
  }

+static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = {
+       SND_SOC_DAPM_INPUT("LEFTIN"),
+       SND_SOC_DAPM_INPUT("RIGHTIN"),
+       SND_SOC_DAPM_OUTPUT("HPLEFT"),
+       SND_SOC_DAPM_OUTPUT("HPRIGHT"),
+
+       SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE,
+                        TPA6130A2_HP_EN_L_SHIFT, 1, NULL, 0),
+       SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE,
+                        TPA6130A2_HP_EN_R_SHIFT, 1, NULL, 0),
+       SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL,
+                        TPA6130A2_HP_EN_L_SHIFT, 0, NULL, 0),
+       SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL,
+                        TPA6130A2_HP_EN_R_SHIFT, 0, NULL, 0),
+
+       SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL,
+                           TPA6130A2_SWS_SHIFT, 1, tpa6130a2_power_event,
+                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route tpa6130a2_dapm_routes[] = {
+       { "Left PGA", NULL, "LEFTIN" },
+       { "Right PGA", NULL, "RIGHTIN" },
+
+       { "Left Mute", NULL, "Left PGA" },
+       { "Right Mute", NULL, "Right PGA" },
+
+       { "HPLEFT", NULL, "Left Mute" },
+       { "HPRIGHT", NULL, "Right Mute" },
+
+       { "Left PGA", NULL, "Power" },
+       { "Right PGA", NULL, "Power" },
+};
+
  struct snd_soc_component_driver tpa6130a2_component_driver = {
        .name = "tpa6130a2",
        .probe = tpa6130a2_component_probe,
+       .dapm_widgets = tpa6130a2_dapm_widgets,
+       .num_dapm_widgets = ARRAY_SIZE(tpa6130a2_dapm_widgets),
+       .dapm_routes = tpa6130a2_dapm_routes,
+       .num_dapm_routes = ARRAY_SIZE(tpa6130a2_dapm_routes),
  };

  static const struct reg_default tpa6130a2_reg_defaults[] = {
@@ -248,6 +229,8 @@ static int tpa6130a2_probe(struct i2c_client *client,
        if (!data)
                return -ENOMEM;

+       data->dev = dev;
+
        data->regmap = devm_regmap_init_i2c(client, &tpa6130a2_regmap_config);
        if (IS_ERR(data->regmap))
                return PTR_ERR(data->regmap);
@@ -262,14 +245,10 @@ static int tpa6130a2_probe(struct i2c_client *client,
                return -ENODEV;
        }

-       tpa6130a2_client = client;
-
-       i2c_set_clientdata(tpa6130a2_client, data);
+       i2c_set_clientdata(client, data);

        data->id = id->driver_data;

-       mutex_init(&data->mutex);
-
        if (data->power_gpio >= 0) {
                ret = devm_gpio_request(dev, data->power_gpio,
                                        "tpa6130a2 enable");
@@ -300,7 +279,7 @@ static int tpa6130a2_probe(struct i2c_client *client,
                goto err_gpio;
        }

-       ret = tpa6130a2_power(1);
+       ret = tpa6130a2_power(data, true);
        if (ret != 0)
                goto err_gpio;

@@ -312,7 +291,7 @@ static int tpa6130a2_probe(struct i2c_client *client,
                dev_warn(dev, "UNTESTED version detected (%d)\n", version);

        /* Disable the chip */
-       ret = tpa6130a2_power(0);
+       ret = tpa6130a2_power(data, false);
        if (ret != 0)
                goto err_gpio;

@@ -320,19 +299,9 @@ static int tpa6130a2_probe(struct i2c_client *client,
                        &tpa6130a2_component_driver, NULL, 0);

  err_gpio:
-       tpa6130a2_client = NULL;
-
        return ret;
  }

-static int tpa6130a2_remove(struct i2c_client *client)
-{
-       tpa6130a2_power(0);
-       tpa6130a2_client = NULL;
-
-       return 0;
-}
-
  static const struct i2c_device_id tpa6130a2_id[] = {
        { "tpa6130a2", TPA6130A2 },
        { "tpa6140a2", TPA6140A2 },
@@ -355,7 +324,6 @@ static struct i2c_driver tpa6130a2_i2c_driver = {
                .of_match_table = of_match_ptr(tpa6130a2_of_match),
        },
        .probe = tpa6130a2_probe,
-       .remove = tpa6130a2_remove,
        .id_table = tpa6130a2_id,
  };

diff --git a/sound/soc/codecs/tpa6130a2.h b/sound/soc/codecs/tpa6130a2.h
index ef05a3f..f19cad5 100644
--- a/sound/soc/codecs/tpa6130a2.h
+++ b/sound/soc/codecs/tpa6130a2.h
@@ -32,15 +32,18 @@

  /* Register bits */
  /* TPA6130A2_REG_CONTROL (0x01) */
-#define TPA6130A2_SWS                  (0x01 << 0)
+#define TPA6130A2_SWS_SHIFT            0
+#define TPA6130A2_SWS                  (0x01 << TPA6130A2_SWS_SHIFT)
  #define TPA6130A2_TERMAL              (0x01 << 1)
  #define TPA6130A2_MODE(x)             (x << 4)
  #define TPA6130A2_MODE_STEREO         (0x00)
  #define TPA6130A2_MODE_DUAL_MONO      (0x01)
  #define TPA6130A2_MODE_BRIDGE         (0x02)
  #define TPA6130A2_MODE_MASK           (0x03)
-#define TPA6130A2_HP_EN_R              (0x01 << 6)
-#define TPA6130A2_HP_EN_L              (0x01 << 7)
+#define TPA6130A2_HP_EN_R_SHIFT                6
+#define TPA6130A2_HP_EN_R              (0x01 << TPA6130A2_HP_EN_R_SHIFT)
+#define TPA6130A2_HP_EN_L_SHIFT                7
+#define TPA6130A2_HP_EN_L              (0x01 << TPA6130A2_HP_EN_L_SHIFT)

  /* TPA6130A2_REG_VOL_MUTE (0x02) */
  #define TPA6130A2_VOLUME(x)           ((x & 0x3f) << 0)
@@ -54,6 +57,4 @@
  /* TPA6130A2_REG_VERSION (0x04) */
  #define TPA6130A2_VERSION_MASK                (0x0f)

-extern int tpa6130a2_stereo_enable(struct snd_soc_codec *codec, int enable);
-
  #endif /* __TPA6130A2_H__ */
diff --git a/sound/soc/omap/rx51.c b/sound/soc/omap/rx51.c
index b59cf89..a768457 100644
--- a/sound/soc/omap/rx51.c
+++ b/sound/soc/omap/rx51.c
@@ -33,7 +33,6 @@
  #include <sound/pcm.h>
  #include <sound/soc.h>
  #include <linux/platform_data/asoc-ti-mcbsp.h>
-#include "../codecs/tpa6130a2.h"

  #include <asm/mach-types.h>

@@ -164,19 +163,6 @@ static int rx51_spk_event(struct snd_soc_dapm_widget *w,
        return 0;
  }

-static int rx51_hp_event(struct snd_soc_dapm_widget *w,
-                        struct snd_kcontrol *k, int event)
-{
-       struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
-
-       if (SND_SOC_DAPM_EVENT_ON(event))
-               tpa6130a2_stereo_enable(codec, 1);
-       else
-               tpa6130a2_stereo_enable(codec, 0);
-
-       return 0;
-}
-
  static int rx51_get_input(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_value *ucontrol)
  {
@@ -235,7 +221,7 @@ static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
  static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
        SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
        SND_SOC_DAPM_MIC("DMic", NULL),
-       SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
+       SND_SOC_DAPM_HP("Headphone Jack", NULL),
        SND_SOC_DAPM_MIC("HS Mic", NULL),
        SND_SOC_DAPM_LINE("FM Transmitter", NULL),
        SND_SOC_DAPM_SPK("Earphone", NULL),
@@ -246,11 +232,14 @@ static const struct snd_soc_dapm_route audio_map[] = {
        {"Ext Spk", NULL, "HPROUT"},
        {"Ext Spk", NULL, "HPLCOM"},
        {"Ext Spk", NULL, "HPRCOM"},
-       {"Headphone Jack", NULL, "LLOUT"},
-       {"Headphone Jack", NULL, "RLOUT"},
        {"FM Transmitter", NULL, "LLOUT"},
        {"FM Transmitter", NULL, "RLOUT"},

+       {"Headphone Jack", NULL, "TPA6130A2 HPLEFT"},
+       {"Headphone Jack", NULL, "TPA6130A2 HPRIGHT"},
+       {"TPA6130A2 LEFTIN", NULL, "LLOUT"},
+       {"TPA6130A2 RIGHTIN", NULL, "RLOUT"},
+
        {"DMic Rate 64", NULL, "DMic"},
        {"DMic", NULL, "Mic Bias"},


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