ASoC: wcd9310: Add IIR filter controls
Add IIR filter interface for the wcd9310 codec.
Control the two 5 band IIR filters in the audio
codec through mixer controls. Enable individual
IIR filter bands and set band coefficients.
Change-Id: Ib3a1321e6239dbf4cd9938498df4d4623aabef23
Signed-off-by: Ben Romberger <bromberg@codeaurora.org>
diff --git a/sound/soc/codecs/wcd9310.c b/sound/soc/codecs/wcd9310.c
index 4be99b1..3b83532 100644
--- a/sound/soc/codecs/wcd9310.c
+++ b/sound/soc/codecs/wcd9310.c
@@ -62,6 +62,22 @@
u16 ctl_reg;
};
+/* Codec supports 2 IIR filters */
+enum {
+ IIR1 = 0,
+ IIR2,
+ IIR_MAX,
+};
+/* Codec supports 5 bands */
+enum {
+ BAND1 = 0,
+ BAND2,
+ BAND3,
+ BAND4,
+ BAND5,
+ BAND_MAX,
+};
+
struct tabla_priv {
struct snd_soc_codec *codec;
u32 adc_count;
@@ -204,6 +220,173 @@
return 0;
}
+static int tabla_get_iir_enable_audio_mixer(
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ int iir_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->reg;
+ int band_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->shift;
+
+ ucontrol->value.integer.value[0] =
+ snd_soc_read(codec, (TABLA_A_CDC_IIR1_CTL + 16 * iir_idx)) &
+ (1 << band_idx);
+
+ pr_debug("%s: IIR #%d band #%d enable %d\n", __func__,
+ iir_idx, band_idx,
+ (uint32_t)ucontrol->value.integer.value[0]);
+ return 0;
+}
+
+static int tabla_put_iir_enable_audio_mixer(
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ int iir_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->reg;
+ int band_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->shift;
+ int value = ucontrol->value.integer.value[0];
+
+ /* Mask first 5 bits, 6-8 are reserved */
+ snd_soc_update_bits(codec, (TABLA_A_CDC_IIR1_CTL + 16 * iir_idx),
+ (1 << band_idx), (value << band_idx));
+
+ pr_debug("%s: IIR #%d band #%d enable %d\n", __func__,
+ iir_idx, band_idx, value);
+ return 0;
+}
+static uint32_t get_iir_band_coeff(struct snd_soc_codec *codec,
+ int iir_idx, int band_idx,
+ int coeff_idx)
+{
+ /* Address does not automatically update if reading */
+ snd_soc_update_bits(codec,
+ (TABLA_A_CDC_IIR1_COEF_B1_CTL + 16 * iir_idx),
+ 0x1F, band_idx * BAND_MAX + coeff_idx);
+
+ /* Mask bits top 2 bits since they are reserved */
+ return ((snd_soc_read(codec,
+ (TABLA_A_CDC_IIR1_COEF_B2_CTL + 16 * iir_idx)) << 24) |
+ (snd_soc_read(codec,
+ (TABLA_A_CDC_IIR1_COEF_B3_CTL + 16 * iir_idx)) << 16) |
+ (snd_soc_read(codec,
+ (TABLA_A_CDC_IIR1_COEF_B4_CTL + 16 * iir_idx)) << 8) |
+ (snd_soc_read(codec,
+ (TABLA_A_CDC_IIR1_COEF_B5_CTL + 16 * iir_idx)))) &
+ 0x3FFFFFFF;
+}
+
+static int tabla_get_iir_band_audio_mixer(
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ int iir_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->reg;
+ int band_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->shift;
+
+ ucontrol->value.integer.value[0] =
+ get_iir_band_coeff(codec, iir_idx, band_idx, 0);
+ ucontrol->value.integer.value[1] =
+ get_iir_band_coeff(codec, iir_idx, band_idx, 1);
+ ucontrol->value.integer.value[2] =
+ get_iir_band_coeff(codec, iir_idx, band_idx, 2);
+ ucontrol->value.integer.value[3] =
+ get_iir_band_coeff(codec, iir_idx, band_idx, 3);
+ ucontrol->value.integer.value[4] =
+ get_iir_band_coeff(codec, iir_idx, band_idx, 4);
+
+ pr_debug("%s: IIR #%d band #%d b0 = 0x%x\n"
+ "%s: IIR #%d band #%d b1 = 0x%x\n"
+ "%s: IIR #%d band #%d b2 = 0x%x\n"
+ "%s: IIR #%d band #%d a1 = 0x%x\n"
+ "%s: IIR #%d band #%d a2 = 0x%x\n",
+ __func__, iir_idx, band_idx,
+ (uint32_t)ucontrol->value.integer.value[0],
+ __func__, iir_idx, band_idx,
+ (uint32_t)ucontrol->value.integer.value[1],
+ __func__, iir_idx, band_idx,
+ (uint32_t)ucontrol->value.integer.value[2],
+ __func__, iir_idx, band_idx,
+ (uint32_t)ucontrol->value.integer.value[3],
+ __func__, iir_idx, band_idx,
+ (uint32_t)ucontrol->value.integer.value[4]);
+ return 0;
+}
+
+static void set_iir_band_coeff(struct snd_soc_codec *codec,
+ int iir_idx, int band_idx,
+ int coeff_idx, uint32_t value)
+{
+ /* Mask top 3 bits, 6-8 are reserved */
+ /* Update address manually each time */
+ snd_soc_update_bits(codec,
+ (TABLA_A_CDC_IIR1_COEF_B1_CTL + 16 * iir_idx),
+ 0x1F, band_idx * BAND_MAX + coeff_idx);
+
+ /* Mask top 2 bits, 7-8 are reserved */
+ snd_soc_update_bits(codec,
+ (TABLA_A_CDC_IIR1_COEF_B2_CTL + 16 * iir_idx),
+ 0x3F, (value >> 24) & 0x3F);
+
+ /* Isolate 8bits at a time */
+ snd_soc_update_bits(codec,
+ (TABLA_A_CDC_IIR1_COEF_B3_CTL + 16 * iir_idx),
+ 0xFF, (value >> 16) & 0xFF);
+
+ snd_soc_update_bits(codec,
+ (TABLA_A_CDC_IIR1_COEF_B4_CTL + 16 * iir_idx),
+ 0xFF, (value >> 8) & 0xFF);
+
+ snd_soc_update_bits(codec,
+ (TABLA_A_CDC_IIR1_COEF_B5_CTL + 16 * iir_idx),
+ 0xFF, value & 0xFF);
+}
+
+static int tabla_put_iir_band_audio_mixer(
+ struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ int iir_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->reg;
+ int band_idx = ((struct soc_multi_mixer_control *)
+ kcontrol->private_value)->shift;
+
+ set_iir_band_coeff(codec, iir_idx, band_idx, 0,
+ ucontrol->value.integer.value[0]);
+ set_iir_band_coeff(codec, iir_idx, band_idx, 1,
+ ucontrol->value.integer.value[1]);
+ set_iir_band_coeff(codec, iir_idx, band_idx, 2,
+ ucontrol->value.integer.value[2]);
+ set_iir_band_coeff(codec, iir_idx, band_idx, 3,
+ ucontrol->value.integer.value[3]);
+ set_iir_band_coeff(codec, iir_idx, band_idx, 4,
+ ucontrol->value.integer.value[4]);
+
+ pr_debug("%s: IIR #%d band #%d b0 = 0x%x\n"
+ "%s: IIR #%d band #%d b1 = 0x%x\n"
+ "%s: IIR #%d band #%d b2 = 0x%x\n"
+ "%s: IIR #%d band #%d a1 = 0x%x\n"
+ "%s: IIR #%d band #%d a2 = 0x%x\n",
+ __func__, iir_idx, band_idx,
+ get_iir_band_coeff(codec, iir_idx, band_idx, 0),
+ __func__, iir_idx, band_idx,
+ get_iir_band_coeff(codec, iir_idx, band_idx, 1),
+ __func__, iir_idx, band_idx,
+ get_iir_band_coeff(codec, iir_idx, band_idx, 2),
+ __func__, iir_idx, band_idx,
+ get_iir_band_coeff(codec, iir_idx, band_idx, 3),
+ __func__, iir_idx, band_idx,
+ get_iir_band_coeff(codec, iir_idx, band_idx, 4));
+ return 0;
+}
+
static const char *tabla_ear_pa_gain_text[] = {"POS_6_DB", "POS_2_DB"};
static const struct soc_enum tabla_ear_pa_gain_enum[] = {
SOC_ENUM_SINGLE_EXT(2, tabla_ear_pa_gain_text),
@@ -385,6 +568,48 @@
SOC_ENUM("RX5 HPF cut off", cf_rxmix5_enum),
SOC_ENUM("RX6 HPF cut off", cf_rxmix6_enum),
SOC_ENUM("RX7 HPF cut off", cf_rxmix7_enum),
+
+ SOC_SINGLE_EXT("IIR1 Enable Band1", IIR1, BAND1, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR1 Enable Band2", IIR1, BAND2, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR1 Enable Band3", IIR1, BAND3, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR1 Enable Band4", IIR1, BAND4, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR1 Enable Band5", IIR1, BAND5, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR2 Enable Band1", IIR2, BAND1, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR2 Enable Band2", IIR2, BAND2, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR2 Enable Band3", IIR2, BAND3, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR2 Enable Band4", IIR2, BAND4, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+ SOC_SINGLE_EXT("IIR2 Enable Band5", IIR2, BAND5, 1, 0,
+ tabla_get_iir_enable_audio_mixer, tabla_put_iir_enable_audio_mixer),
+
+ SOC_SINGLE_MULTI_EXT("IIR1 Band1", IIR1, BAND1, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR1 Band2", IIR1, BAND2, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR1 Band3", IIR1, BAND3, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR1 Band4", IIR1, BAND4, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR1 Band5", IIR1, BAND5, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR2 Band1", IIR2, BAND1, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR2 Band2", IIR2, BAND2, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR2 Band3", IIR2, BAND3, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR2 Band4", IIR2, BAND4, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
+ SOC_SINGLE_MULTI_EXT("IIR2 Band5", IIR2, BAND5, 255, 0, 5,
+ tabla_get_iir_band_audio_mixer, tabla_put_iir_band_audio_mixer),
};
static const char *rx_mix1_text[] = {
@@ -1989,6 +2214,11 @@
if ((reg >= TABLA_A_CDC_MBHC_EN_CTL) || (reg < 0x100))
return 1;
+ /* IIR Coeff registers are not cacheable */
+ if ((reg >= TABLA_A_CDC_IIR1_COEF_B1_CTL) &&
+ (reg <= TABLA_A_CDC_IIR2_COEF_B5_CTL))
+ return 1;
+
return 0;
}