Some of TWL4030's input selection are in bitfield, which
needs special helper function to deal with.
For example: PREDL_CTL register:
bit 0 (0x1): voice_en
bit 1 (0x2): Audio L1 enable (DACL1)
bit 2 (0x4): Audio L2 enable (DACL2)
bit 3 (0x8): Audio R2 enable (DACR2)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx>
---
sound/soc/codecs/twl4030.c | 51 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index 91effd3..17f2b51 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -191,6 +191,57 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)
}
/*
+ * Some of TWL's input selection are in bitfield.
+ * Dealing with those need special function
+ * For example: PREDL_CTL register:
+ * bit 0 (0x1): voice_en
+ * bit 1 (0x2): Audio L1 enable (DACL1)
+ * bit 2 (0x4): Audio L2 enable (DACL2)
+ * bit 3 (0x8): Audio R2 enable (DACR2)
+ */
+static int snd_soc_get_enum_twl4030(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ int val_mask = 0;
+ int i;
+ int val = twl4030_read_reg_cache(codec, e->reg);
+
+ for (i = 0; i < e->max - 1; i++)
+ val_mask |= (1 << i);
+
+ val = (val >> e->shift_l) & val_mask;
+ i = 0;
+ while (val && i++ < e->max)
+ val >>= 1;
+
+ ucontrol->value.integer.value[0] = i;
+ return 0;
+}
+
+static int snd_soc_put_enum_twl4030(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ int val_mask = 0;
+ int val = 0;
+ int i;
+
+ for (i = 0; i < e->max - 1; i++)
+ val_mask |= (1 << i);
+ val_mask <<= e->shift_l;
+
+ if (ucontrol->value.integer.value[0]) {
+ val = (1 << (ucontrol->value.integer.value[0] - 1));
+ val <<= e->shift_l;
+ }
+
+ return snd_soc_update_bits(codec, e->reg, val_mask, val);
+}
+
+/*
* FGAIN volume control:
* from -62 to 0 dB in 1 dB steps (mute instead of -63 dB)
*/
--
1.6.0.3
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