On 18 October 2011 14:43, Ashish Chavan ashish.chavan@kpitcummins.com wrote:
This patch adds controls to set following ALC parameters, - Max gain, Min gain, Noise gain, Attack rate, Release rate and delay
It also adds a switch to enable/disable noise suppression.
As per DA7210 data sheet, ALC and noise suppression can be enabled only if certain conditions are met. This condition checks are handled by simply using "_EXT" version of controls to capture change events.
Signed-off-by: Ashish Chavan ashish.chavan@kpitcummins.com Signed-off-by: David Dajun Chen dchen@diasemi.com
Changes since v1:
- Reading from register instead of cache
- Made debug message more specific about error
- Changed "Gain" to "Volume" in names of ALC controls
sound/soc/codecs/da7210.c | 109 +++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 109 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c index a31be70..edcfc36 100644 --- a/sound/soc/codecs/da7210.c +++ b/sound/soc/codecs/da7210.c @@ -26,11 +26,15 @@ #include <sound/tlv.h>
/* DA7210 register space */ +#define DA7210_CONTROL 0x01 #define DA7210_STATUS 0x02 #define DA7210_STARTUP1 0x03 #define DA7210_MIC_L 0x07 #define DA7210_MIC_R 0x08 +#define DA7210_AUX1_L 0x09 +#define DA7210_AUX1_R 0x0A #define DA7210_AUX2 0x0B +#define DA7210_IN_GAIN 0x0C #define DA7210_INMIX_L 0x0D #define DA7210_INMIX_R 0x0E #define DA7210_ADC_HPF 0x0F @@ -59,6 +63,12 @@ #define DA7210_PLL_DIV2 0x2A #define DA7210_PLL_DIV3 0x2B #define DA7210_PLL 0x2C +#define DA7210_ALC_MAX 0x83 +#define DA7210_ALC_MIN 0x84 +#define DA7210_ALC_NOIS 0x85 +#define DA7210_ALC_ATT 0x86 +#define DA7210_ALC_REL 0x87 +#define DA7210_ALC_DEL 0x88 #define DA7210_A_HID_UNLOCK 0x8A #define DA7210_A_TEST_UNLOCK 0x8B #define DA7210_A_PLL1 0x90 @@ -81,6 +91,7 @@ #define DA7210_IN_R_EN (1 << 7)
/* ADC bit fields */ +#define DA7210_ADC_ALC_EN (1 << 0) #define DA7210_ADC_L_EN (1 << 3) #define DA7210_ADC_R_EN (1 << 7)
@@ -150,6 +161,29 @@ /* SOFTMUTE bit fields */ #define DA7210_RAMP_EN (1 << 6)
+/* CONTROL bit fields */ +#define DA7210_NOISE_SUP_EN (1 << 3)
+/* IN_GAIN bit fields */ +#define DA7210_INPGA_L_VOL (0x0F << 0) +#define DA7210_INPGA_R_VOL (0xF0 << 0)
+/* ZERO_CROSS bit fields */ +#define DA7210_AUX1_L_ZC (1 << 0) +#define DA7210_AUX1_R_ZC (1 << 1) +#define DA7210_HP_L_ZC (1 << 6) +#define DA7210_HP_R_ZC (1 << 7)
+/* AUX1_L bit fields */ +#define DA7210_AUX1_L_VOL (0x3F << 0)
+/* AUX1_R bit fields */ +#define DA7210_AUX1_R_VOL (0x3F << 0)
+/* Minimum INPGA and AUX1 volume to enable noise suppression */ +#define DA7210_INPGA_MIN_VOL_NS 0x0A /* 10.5dB */ +#define DA7210_AUX1_MIN_VOL_NS 0x35 /* 6dB */
#define DA7210_VERSION "0.0.1"
/* @@ -202,6 +236,68 @@ static const char *da7210_hp_mode_txt[] = { static const struct soc_enum da7210_hp_mode_sel = SOC_ENUM_SINGLE(DA7210_HP_CFG, 0, 2, da7210_hp_mode_txt);
+/* ALC can be enabled only if noise suppression is disabled */ +static int da7210_put_alc_sw(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+{
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- if (ucontrol->value.integer.value[0]) {
- /* Check if noise suppression is enabled */
- if (snd_soc_read(codec, DA7210_CONTROL) & DA7210_NOISE_SUP_EN) {
- dev_dbg(codec->dev,
- "Disable noise suppression to enable ALC\n");
- return -EPERM;
-EINVAL
- }
- }
- /* If all conditions are met or we are actually disabling ALC */
- return snd_soc_put_volsw(kcontrol, ucontrol);
+}
+/* Noise suppression can be enabled only if following conditions are met
- ALC disabled
- ZC enabled for HP and AUX1 PGA
- INPGA_L_VOL and INPGA_R_VOL >= 10.5 dB
- AUX1_L_VOL and AUX1_R_VOL >= 6 dB
- */
+static int da7210_put_noise_sup_sw(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+{
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- u8 val;
- if (ucontrol->value.integer.value[0]) {
- /* Check if ALC is enabled */
- if (snd_soc_read(codec, DA7210_ADC) & DA7210_ADC_ALC_EN)
- goto err;
- /* Check ZC for HP and AUX1 PGA */
- if ((snd_soc_read(codec, DA7210_ZERO_CROSS) &
- (DA7210_AUX1_L_ZC | DA7210_AUX1_R_ZC | DA7210_HP_L_ZC |
- DA7210_HP_R_ZC)) != 0xc3)
It may be clearer if you don't use the magic number here and specify the bits you are checking.
- goto err;
- /* Check INPGA_L_VOL and INPGA_R_VOL */
- val = snd_soc_read(codec, DA7210_IN_GAIN);
- if (((val & DA7210_INPGA_L_VOL) < DA7210_INPGA_MIN_VOL_NS) ||
- (((val & DA7210_INPGA_R_VOL) >> 4) <
- DA7210_INPGA_MIN_VOL_NS))
- goto err;
- /* Check AUX1_L_VOL and AUX1_R_VOL */
- if (((snd_soc_read(codec, DA7210_AUX1_L) & DA7210_AUX1_L_VOL) <
- DA7210_AUX1_MIN_VOL_NS) ||
- ((snd_soc_read(codec, DA7210_AUX1_R) & DA7210_AUX1_R_VOL) <
- DA7210_AUX1_MIN_VOL_NS))
- goto err;
- }
- /* If all conditions are met or we are actually disabling Noise sup */
- return snd_soc_put_volsw(kcontrol, ucontrol);
+err:
- return -EPERM;
-EINVAL
+}
static const struct snd_kcontrol_new da7210_snd_controls[] = {
SOC_DOUBLE_R_TLV("HeadPhone Playback Volume", @@ -260,6 +356,19 @@ static const struct snd_kcontrol_new da7210_snd_controls[] = { SOC_DOUBLE("Headphone ZC Switch", DA7210_ZERO_CROSS, 6, 7, 1, 0),
SOC_ENUM("Headphone Class", da7210_hp_mode_sel),
- /* ALC controls */
- SOC_SINGLE_EXT("ALC Enable Switch", DA7210_ADC, 0, 1, 0,
- snd_soc_get_volsw, da7210_put_alc_sw),
- SOC_SINGLE("ALC Capture Max Volume", DA7210_ALC_MAX, 0, 0x3F, 0),
- SOC_SINGLE("ALC Capture Min Volume", DA7210_ALC_MIN, 0, 0x3F, 0),
- SOC_SINGLE("ALC Capture Noise Volume", DA7210_ALC_NOIS, 0, 0x3F, 0),
- SOC_SINGLE("ALC Capture Attack Rate", DA7210_ALC_ATT, 0, 0xFF, 0),
- SOC_SINGLE("ALC Capture Release Rate", DA7210_ALC_REL, 0, 0xFF, 0),
- SOC_SINGLE("ALC Capture Release Delay", DA7210_ALC_DEL, 0, 0xFF, 0),
- SOC_SINGLE_EXT("Noise Suppression Enable Switch", DA7210_CONTROL, 3, 1,
- 0, snd_soc_get_volsw, da7210_put_noise_sup_sw),
};
/* Codec private data */
1.7.1