ASoC: twl6040: Use virtual DAPM mixer controls

By using the new virtual DAPM mixer controls it is possible to remove the
twl6040 specific implementation of virtual controls.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 5 insertions, 17 deletions

diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
index 35059a242fa4..f2f4bcb2ff71 100644
--- a/sound/soc/codecs/twl6040.c
+++ b/sound/soc/codecs/twl6040.c
@@ -54,12 +54,7 @@ enum twl6040_dai_id {
 #define TWL6040_OUTHF_0dB 0x03
 #define TWL6040_OUTHF_M52dB 0x1D
 
-/* Shadow register used by the driver */
-#define TWL6040_REG_SW_SHADOW   0x2F
-#define TWL6040_CACHEREGNUM     (TWL6040_REG_SW_SHADOW + 1)
-
-/* TWL6040_REG_SW_SHADOW (0x2F) fields */
-#define TWL6040_EAR_PATH_ENABLE 0x01
+#define TWL6040_CACHEREGNUM     (TWL6040_REG_STATUS + 1)
 
 struct twl6040_jack_data {
         struct snd_soc_jack *jack;
@@ -135,8 +130,6 @@ static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
         0x00, /* REG_HFOTRIM    0x2C    */
         0x09, /* REG_ACCCTL     0x2D    */
         0x00, /* REG_STATUS     0x2E (ro) */
-
-        0x00, /* REG_SW_SHADOW  0x2F - Shadow, non HW register */
 };
 
 /* List of registers to be restored after power up */
@@ -220,12 +213,8 @@ static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
         if (reg >= TWL6040_CACHEREGNUM)
                 return -EIO;
 
-        if (likely(reg < TWL6040_REG_SW_SHADOW)) {
-                value = twl6040_reg_read(twl6040, reg);
-                twl6040_write_reg_cache(codec, reg, value);
-        } else {
-                value = twl6040_read_reg_cache(codec, reg);
-        }
+        value = twl6040_reg_read(twl6040, reg);
+        twl6040_write_reg_cache(codec, reg, value);
 
         return value;
 }
@@ -261,8 +250,7 @@ static int twl6040_write(struct snd_soc_codec *codec,
                 return -EIO;
 
         twl6040_write_reg_cache(codec, reg, value);
-        if (likely(reg < TWL6040_REG_SW_SHADOW) &&
-            twl6040_is_path_unmuted(codec, reg))
+        if (twl6040_is_path_unmuted(codec, reg))
                 return twl6040_reg_write(twl6040, reg, value);
         else
                 return 0;
@@ -555,7 +543,7 @@ static const struct snd_kcontrol_new hfr_mux_controls =
         SOC_DAPM_ENUM("Route", twl6040_hf_enum[1]);
 
 static const struct snd_kcontrol_new ep_path_enable_control =
-        SOC_DAPM_SINGLE("Switch", TWL6040_REG_SW_SHADOW, 0, 1, 0);
+        SOC_DAPM_SINGLE_VIRT("Switch", 1);
 
 static const struct snd_kcontrol_new auxl_switch_control =
         SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 6, 1, 0);