[PATCH 4.2.y-ckt 195/305] ASoC: es8328: Fix deemphasis values

From: Kamal Mostafa
Date: Fri Jan 15 2016 - 19:39:39 EST


4.2.8-ckt2 -stable review patch. If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: John Keeping <john@xxxxxxxxxxxx>

commit 84ebac4d04d25ac5c1b1dc3ae621fd465eb38f4e upstream.

This is using completely the wrong mask and value when updating the
register. Since the correct values are already defined in the header,
switch to using a table with explicit constants rather than shifting the
array index.

Signed-off-by: John Keeping <john@xxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
sound/soc/codecs/es8328.c | 25 +++++++++++++++++--------
sound/soc/codecs/es8328.h | 1 +
2 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/es8328.c b/sound/soc/codecs/es8328.c
index 6a09101..fb7b61f 100644
--- a/sound/soc/codecs/es8328.c
+++ b/sound/soc/codecs/es8328.c
@@ -85,7 +85,15 @@ static const DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 300, 0);

-static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
+static const struct {
+ int rate;
+ unsigned int val;
+} deemph_settings[] = {
+ { 0, ES8328_DACCONTROL6_DEEMPH_OFF },
+ { 32000, ES8328_DACCONTROL6_DEEMPH_32k },
+ { 44100, ES8328_DACCONTROL6_DEEMPH_44_1k },
+ { 48000, ES8328_DACCONTROL6_DEEMPH_48k },
+};

static int es8328_set_deemph(struct snd_soc_codec *codec)
{
@@ -97,21 +105,22 @@ static int es8328_set_deemph(struct snd_soc_codec *codec)
* rate.
*/
if (es8328->deemph) {
- best = 1;
- for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
- if (abs(deemph_settings[i] - es8328->playback_fs) <
- abs(deemph_settings[best] - es8328->playback_fs))
+ best = 0;
+ for (i = 1; i < ARRAY_SIZE(deemph_settings); i++) {
+ if (abs(deemph_settings[i].rate - es8328->playback_fs) <
+ abs(deemph_settings[best].rate - es8328->playback_fs))
best = i;
}

- val = best << 1;
+ val = deemph_settings[best].val;
} else {
- val = 0;
+ val = ES8328_DACCONTROL6_DEEMPH_OFF;
}

dev_dbg(codec->dev, "Set deemphasis %d\n", val);

- return snd_soc_update_bits(codec, ES8328_DACCONTROL6, 0x6, val);
+ return snd_soc_update_bits(codec, ES8328_DACCONTROL6,
+ ES8328_DACCONTROL6_DEEMPH_MASK, val);
}

static int es8328_get_deemph(struct snd_kcontrol *kcontrol,
diff --git a/sound/soc/codecs/es8328.h b/sound/soc/codecs/es8328.h
index cb36afe..156c748 100644
--- a/sound/soc/codecs/es8328.h
+++ b/sound/soc/codecs/es8328.h
@@ -153,6 +153,7 @@ int es8328_probe(struct device *dev, struct regmap *regmap);
#define ES8328_DACCONTROL6_CLICKFREE (1 << 3)
#define ES8328_DACCONTROL6_DAC_INVR (1 << 4)
#define ES8328_DACCONTROL6_DAC_INVL (1 << 5)
+#define ES8328_DACCONTROL6_DEEMPH_MASK (3 << 6)
#define ES8328_DACCONTROL6_DEEMPH_OFF (0 << 6)
#define ES8328_DACCONTROL6_DEEMPH_32k (1 << 6)
#define ES8328_DACCONTROL6_DEEMPH_44_1k (2 << 6)
--
1.9.1