ASoC: da7219: Add regmap patch to support old silicon

Initial silicon did not have master bias enabled by default, unlike
later HW, so use regmap patch to align with newer defaults.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c
index c6d3b32..9c7e8ec 100644 (file)
--- a/sound/soc/codecs/da7219.c
+++ b/sound/soc/codecs/da7219.c
@@ -1592,9 +1592,14 @@ static void da7219_handle_pdata(struct snd_soc_codec *codec)
        }
 }
 
+static struct reg_sequence da7219_rev_aa_patch[] = {
+       { DA7219_REFERENCES, 0x08 },
+};
+
 static int da7219_probe(struct snd_soc_codec *codec)
 {
        struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
+       unsigned int rev;
        int ret;
 
        mutex_init(&da7219->lock);
@@ -1604,6 +1609,26 @@ static int da7219_probe(struct snd_soc_codec *codec)
        if (ret)
                return ret;
 
+       ret = regmap_read(da7219->regmap, DA7219_CHIP_REVISION, &rev);
+       if (ret) {
+               dev_err(codec->dev, "Failed to read chip revision: %d\n", ret);
+               goto err_disable_reg;
+       }
+
+       switch (rev & DA7219_CHIP_MINOR_MASK) {
+       case 0:
+               ret = regmap_register_patch(da7219->regmap, da7219_rev_aa_patch,
+                                           ARRAY_SIZE(da7219_rev_aa_patch));
+               if (ret) {
+                       dev_err(codec->dev, "Failed to register AA patch: %d\n",
+                               ret);
+                       goto err_disable_reg;
+               }
+               break;
+       default:
+               break;
+       }
+
        /* Handle DT/Platform data */
        if (codec->dev->of_node)
                da7219->pdata = da7219_of_to_pdata(codec);
@@ -1774,7 +1799,6 @@ static struct reg_default da7219_reg_defaults[] = {
        { DA7219_MIXOUT_R_CTRL, 0x10 },
        { DA7219_CHIP_ID1, 0x23 },
        { DA7219_CHIP_ID2, 0x93 },
-       { DA7219_CHIP_REVISION, 0x00 },
        { DA7219_IO_CTRL, 0x00 },
        { DA7219_GAIN_RAMP_CTRL, 0x00 },
        { DA7219_PC_COUNT, 0x02 },