ASoC: da7219: Remove internal LDO features of codec

In AB silicon, the internal LDO is not supported so remove
DT and driver references to this (digital voltage direct from
'VDD' supply)

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

4 files changed, 6 insertions, 68 deletions

diff --git a/Documentation/devicetree/bindings/sound/da7219.txt b/Documentation/devicetree/bindings/sound/da7219.txt
index 1b7030911a3b..062a2a08250e 100644
--- a/Documentation/devicetree/bindings/sound/da7219.txt
+++ b/Documentation/devicetree/bindings/sound/da7219.txt
@@ -28,13 +28,15 @@ Optional properties:
 - clocks : phandle and clock specifier for codec MCLK.
 - clock-names : Clock name string for 'clocks' attribute, should be "mclk".
 
-- dlg,ldo-lvl : Required internal LDO voltage (mV) level for digital engine
-        [<1050>, <1100>, <1200>, <1400>]
 - dlg,micbias-lvl : Voltage (mV) for Mic Bias
         [<1800>, <2000>, <2200>, <2400>, <2600>]
 - dlg,mic-amp-in-sel : Mic input source type
         ["diff", "se_p", "se_n"]
 
+Deprecated properties:
+- dlg,ldo-lvl : Required internal LDO voltage (mV) level for digital engine
+  (LDO unavailable in production HW so property no longer required).
+
 ======
 
 Child node - 'da7219_aad':
diff --git a/include/sound/da7219.h b/include/sound/da7219.h
index 3f39e135312d..307198b469bc 100644
--- a/include/sound/da7219.h
+++ b/include/sound/da7219.h
@@ -14,14 +14,6 @@
 #ifndef __DA7219_PDATA_H
 #define __DA7219_PDATA_H
 
-/* LDO */
-enum da7219_ldo_lvl_sel {
-        DA7219_LDO_LVL_SEL_1_05V = 0,
-        DA7219_LDO_LVL_SEL_1_10V,
-        DA7219_LDO_LVL_SEL_1_20V,
-        DA7219_LDO_LVL_SEL_1_40V,
-};
-
 /* Mic Bias */
 enum da7219_micbias_voltage {
         DA7219_MICBIAS_1_8V = 1,
@@ -41,9 +33,6 @@ enum da7219_mic_amp_in_sel {
 struct da7219_aad_pdata;
 
 struct da7219_pdata {
-        /* Internal LDO */
-        enum da7219_ldo_lvl_sel ldo_lvl_sel;
-
         /* Mic */
         enum da7219_micbias_voltage micbias_lvl;
         enum da7219_mic_amp_in_sel mic_amp_in_sel;
diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c
index 0a177ae8e0c3..2630c503e3df 100644
--- a/sound/soc/codecs/da7219.c
+++ b/sound/soc/codecs/da7219.c
@@ -1406,24 +1406,6 @@ static const struct of_device_id da7219_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, da7219_of_match);
 
-static enum da7219_ldo_lvl_sel da7219_of_ldo_lvl(struct snd_soc_codec *codec,
-                                                 u32 val)
-{
-        switch (val) {
-        case 1050:
-                return DA7219_LDO_LVL_SEL_1_05V;
-        case 1100:
-                return DA7219_LDO_LVL_SEL_1_10V;
-        case 1200:
-                return DA7219_LDO_LVL_SEL_1_20V;
-        case 1400:
-                return DA7219_LDO_LVL_SEL_1_40V;
-        default:
-                dev_warn(codec->dev, "Invalid LDO level");
-                return DA7219_LDO_LVL_SEL_1_05V;
-        }
-}
-
 static enum da7219_micbias_voltage
         da7219_of_micbias_lvl(struct snd_soc_codec *codec, u32 val)
 {
@@ -1470,9 +1452,6 @@ static struct da7219_pdata *da7219_of_to_pdata(struct snd_soc_codec *codec)
         if (!pdata)
                 return NULL;
 
-        if (of_property_read_u32(np, "dlg,ldo-lvl", &of_val32) >= 0)
-                pdata->ldo_lvl_sel = da7219_of_ldo_lvl(codec, of_val32);
-
         if (of_property_read_u32(np, "dlg,micbias-lvl", &of_val32) >= 0)
                 pdata->micbias_lvl = da7219_of_micbias_lvl(codec, of_val32);
         else
@@ -1517,24 +1496,13 @@ static int da7219_set_bias_level(struct snd_soc_codec *codec,
                         snd_soc_update_bits(codec, DA7219_REFERENCES,
                                             DA7219_BIAS_EN_MASK,
                                             DA7219_BIAS_EN_MASK);
-
-                        /* Enable Internal Digital LDO */
-                        snd_soc_update_bits(codec, DA7219_LDO_CTRL,
-                                            DA7219_LDO_EN_MASK,
-                                            DA7219_LDO_EN_MASK);
                 }
                 break;
         case SND_SOC_BIAS_OFF:
-                /* Only disable if jack detection not active */
-                if (!da7219->aad->jack) {
-                        /* Bypass Internal Digital LDO */
-                        snd_soc_update_bits(codec, DA7219_LDO_CTRL,
-                                            DA7219_LDO_EN_MASK, 0);
-
-                        /* Master bias */
+                /* Only disable master bias if jack detection not active */
+                if (!da7219->aad->jack)
                         snd_soc_update_bits(codec, DA7219_REFERENCES,
                                             DA7219_BIAS_EN_MASK, 0);
-                }
 
                 /* MCLK */
                 if (da7219->mclk)
@@ -1601,19 +1569,6 @@ static void da7219_handle_pdata(struct snd_soc_codec *codec)
         if (pdata) {
                 u8 micbias_lvl = 0;
 
-                /* Internal LDO */
-                switch (pdata->ldo_lvl_sel) {
-                case DA7219_LDO_LVL_SEL_1_05V:
-                case DA7219_LDO_LVL_SEL_1_10V:
-                case DA7219_LDO_LVL_SEL_1_20V:
-                case DA7219_LDO_LVL_SEL_1_40V:
-                        snd_soc_update_bits(codec, DA7219_LDO_CTRL,
-                                            DA7219_LDO_LEVEL_SELECT_MASK,
-                                            (pdata->ldo_lvl_sel <<
-                                             DA7219_LDO_LEVEL_SELECT_SHIFT));
-                        break;
-                }
-
                 /* Mic Bias voltages */
                 switch (pdata->micbias_lvl) {
                 case DA7219_MICBIAS_1_8V:
@@ -1823,7 +1778,6 @@ static struct reg_default da7219_reg_defaults[] = {
         { DA7219_CHIP_ID1, 0x23 },
         { DA7219_CHIP_ID2, 0x93 },
         { DA7219_CHIP_REVISION, 0x00 },
-        { DA7219_LDO_CTRL, 0x00 },
         { DA7219_IO_CTRL, 0x00 },
         { DA7219_GAIN_RAMP_CTRL, 0x00 },
         { DA7219_PC_COUNT, 0x02 },
diff --git a/sound/soc/codecs/da7219.h b/sound/soc/codecs/da7219.h
index b514268c6c56..2b3f4471a17f 100644
--- a/sound/soc/codecs/da7219.h
+++ b/sound/soc/codecs/da7219.h
@@ -85,7 +85,6 @@
 #define DA7219_CHIP_ID1                 0x81
 #define DA7219_CHIP_ID2                 0x82
 #define DA7219_CHIP_REVISION            0x83
-#define DA7219_LDO_CTRL                 0x90
 #define DA7219_IO_CTRL                  0x91
 #define DA7219_GAIN_RAMP_CTRL           0x92
 #define DA7219_PC_COUNT                 0x94
@@ -569,12 +568,6 @@
 #define DA7219_CHIP_MAJOR_SHIFT 4
 #define DA7219_CHIP_MAJOR_MASK  (0xF << 4)
 
-/* DA7219_LDO_CTRL = 0x90 */
-#define DA7219_LDO_LEVEL_SELECT_SHIFT   4
-#define DA7219_LDO_LEVEL_SELECT_MASK    (0x3 << 4)
-#define DA7219_LDO_EN_SHIFT             7
-#define DA7219_LDO_EN_MASK              (0x1 << 7)
-
 /* DA7219_IO_CTRL = 0x91 */
 #define DA7219_IO_VOLTAGE_LEVEL_SHIFT           0
 #define DA7219_IO_VOLTAGE_LEVEL_MASK            (0x1 << 0)