ASoC: da7210: Add support for High pass and Voice filters for ADC and DAC

This patch add controls for setting cut-off for high pass and voice
filters of ADC and DAC. There are also switches to enable/disable
these filters.

Also removed hard coded, fixed  values of these parameters used by
previous version of driver.

Signed-off-by: Ashish Chavan <ashish.chavan@kpitcummins.com>
Signed-off-by: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 32 insertions, 25 deletions

diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c
index 7dc1259010be..fa0d5125e70b 100644
--- a/sound/soc/codecs/da7210.c
+++ b/sound/soc/codecs/da7210.c
@@ -167,6 +167,28 @@ static const unsigned int hp_out_tlv[] = {
 static const DECLARE_TLV_DB_SCALE(eq_gain_tlv, -1050, 150, 0);
 static const DECLARE_TLV_DB_SCALE(adc_eq_master_gain_tlv, -1800, 600, 1);
 
+/* ADC and DAC high pass filter f0 value */
+static const char const *da7210_hpf_cutoff_txt[] = {
+        "Fs/8192*pi", "Fs/4096*pi", "Fs/2048*pi", "Fs/1024*pi"
+};
+
+static const struct soc_enum da7210_dac_hpf_cutoff =
+        SOC_ENUM_SINGLE(DA7210_DAC_HPF, 0, 4, da7210_hpf_cutoff_txt);
+
+static const struct soc_enum da7210_adc_hpf_cutoff =
+        SOC_ENUM_SINGLE(DA7210_ADC_HPF, 0, 4, da7210_hpf_cutoff_txt);
+
+/* ADC and DAC voice (8kHz) high pass cutoff value */
+static const char const *da7210_vf_cutoff_txt[] = {
+        "2.5Hz", "25Hz", "50Hz", "100Hz", "150Hz", "200Hz", "300Hz", "400Hz"
+};
+
+static const struct soc_enum da7210_dac_vf_cutoff =
+        SOC_ENUM_SINGLE(DA7210_DAC_HPF, 4, 8, da7210_vf_cutoff_txt);
+
+static const struct soc_enum da7210_adc_vf_cutoff =
+        SOC_ENUM_SINGLE(DA7210_ADC_HPF, 4, 8, da7210_vf_cutoff_txt);
+
 static const struct snd_kcontrol_new da7210_snd_controls[] = {
 
         SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
@@ -200,6 +222,16 @@ static const struct snd_kcontrol_new da7210_snd_controls[] = {
                        eq_gain_tlv),
         SOC_SINGLE_TLV("ADC EQ5 Volume", DA7210_ADC_EQ5, 0, 0xf, 1,
                        eq_gain_tlv),
+
+        SOC_SINGLE("DAC HPF Switch", DA7210_DAC_HPF, 3, 1, 0),
+        SOC_ENUM("DAC HPF Cutoff", da7210_dac_hpf_cutoff),
+        SOC_SINGLE("DAC Voice Mode Switch", DA7210_DAC_HPF, 7, 1, 0),
+        SOC_ENUM("DAC Voice Cutoff", da7210_dac_vf_cutoff),
+
+        SOC_SINGLE("ADC HPF Switch", DA7210_ADC_HPF, 3, 1, 0),
+        SOC_ENUM("ADC HPF Cutoff", da7210_adc_hpf_cutoff),
+        SOC_SINGLE("ADC Voice Mode Switch", DA7210_ADC_HPF, 7, 1, 0),
+        SOC_ENUM("ADC Voice Cutoff", da7210_adc_vf_cutoff),
 };
 
 /* Codec private data */
@@ -275,7 +307,6 @@ static int da7210_hw_params(struct snd_pcm_substream *substream,
         struct snd_soc_pcm_runtime *rtd = substream->private_data;
         struct snd_soc_codec *codec = rtd->codec;
         u32 dai_cfg1;
-        u32 hpf_reg, hpf_mask, hpf_value;
         u32 fs, bypass;
 
         /* set DAI source to Left and Right ADC */
@@ -306,68 +337,45 @@ static int da7210_hw_params(struct snd_pcm_substream *substream,
 
         snd_soc_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 
-        hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
-                DA7210_DAC_HPF : DA7210_ADC_HPF;
-
         switch (params_rate(params)) {
         case 8000:
                 fs              = DA7210_PLL_FS_8000;
-                hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
-                hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
                 bypass          = DA7210_PLL_BYP;
                 break;
         case 11025:
                 fs              = DA7210_PLL_FS_11025;
-                hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
-                hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
                 bypass          = 0;
                 break;
         case 12000:
                 fs              = DA7210_PLL_FS_12000;
-                hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
-                hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
                 bypass          = DA7210_PLL_BYP;
                 break;
         case 16000:
                 fs              = DA7210_PLL_FS_16000;
-                hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
-                hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
                 bypass          = DA7210_PLL_BYP;
                 break;
         case 22050:
                 fs              = DA7210_PLL_FS_22050;
-                hpf_mask        = DA7210_VOICE_EN;
-                hpf_value       = 0;
                 bypass          = 0;
                 break;
         case 32000:
                 fs              = DA7210_PLL_FS_32000;
-                hpf_mask        = DA7210_VOICE_EN;
-                hpf_value       = 0;
                 bypass          = DA7210_PLL_BYP;
                 break;
         case 44100:
                 fs              = DA7210_PLL_FS_44100;
-                hpf_mask        = DA7210_VOICE_EN;
-                hpf_value       = 0;
                 bypass          = 0;
                 break;
         case 48000:
                 fs              = DA7210_PLL_FS_48000;
-                hpf_mask        = DA7210_VOICE_EN;
-                hpf_value       = 0;
                 bypass          = DA7210_PLL_BYP;
                 break;
         case 88200:
                 fs              = DA7210_PLL_FS_88200;
-                hpf_mask        = DA7210_VOICE_EN;
-                hpf_value       = 0;
                 bypass          = 0;
                 break;
         case 96000:
                 fs              = DA7210_PLL_FS_96000;
-                hpf_mask        = DA7210_VOICE_EN;
-                hpf_value       = 0;
                 bypass          = DA7210_PLL_BYP;
                 break;
         default:
@@ -377,7 +385,6 @@ static int da7210_hw_params(struct snd_pcm_substream *substream,
         /* Disable active mode */
         snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
 
-        snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
         snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);