From 86834511c2acd23e214d5739e9ea58e31b975d1f Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Mon, 3 Oct 2016 11:21:01 +0100 Subject: ASoC: da7219: Improve pop/click performance for sensitive HPs Currently on some headsets slight pops can be heard during DAPM power-up/down. This can also be witnessed during the HP detect procedure. This patch addresses the issue by adjusting DAPM power sequencing slightly, the introduction of delays and use of minimum HP gain to avoid such noise artefacts. Signed-off-by: Adam Thomson Signed-off-by: Mark Brown --- sound/soc/codecs/da7219-aad.c | 18 ++++-- sound/soc/codecs/da7219.c | 139 ++++++++++++++++++++++++++++++++++++------ sound/soc/codecs/da7219.h | 5 ++ 3 files changed, 140 insertions(+), 22 deletions(-) (limited to 'sound') diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c index 2b8914dd5990..6274d79c1353 100644 --- a/sound/soc/codecs/da7219-aad.c +++ b/sound/soc/codecs/da7219-aad.c @@ -204,10 +204,19 @@ static void da7219_aad_hptest_work(struct work_struct *work) snd_soc_update_bits(codec, DA7219_MIXOUT_R_CTRL, DA7219_MIXOUT_R_AMP_EN_MASK, DA7219_MIXOUT_R_AMP_EN_MASK); - snd_soc_write(codec, DA7219_HP_L_CTRL, - DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK); - snd_soc_write(codec, DA7219_HP_R_CTRL, - DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK); + snd_soc_update_bits(codec, DA7219_HP_L_CTRL, + DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK, + DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK); + snd_soc_update_bits(codec, DA7219_HP_R_CTRL, + DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK, + DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK); + msleep(DA7219_SETTLING_DELAY); + snd_soc_update_bits(codec, DA7219_HP_L_CTRL, + DA7219_HP_L_AMP_MUTE_EN_MASK | + DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, 0); + snd_soc_update_bits(codec, DA7219_HP_R_CTRL, + DA7219_HP_R_AMP_MUTE_EN_MASK | + DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, 0); /* * If we're running from the internal oscillator then give audio paths @@ -244,6 +253,7 @@ static void da7219_aad_hptest_work(struct work_struct *work) regcache_mark_dirty(da7219->regmap); regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL, DA7219_HP_R_CTRL); + msleep(DA7219_SETTLING_DELAY); regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL, DA7219_MIXOUT_R_CTRL); regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L, diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c index 1152aa5e7c39..2610fc5cff68 100644 --- a/sound/soc/codecs/da7219.c +++ b/sound/soc/codecs/da7219.c @@ -823,6 +823,85 @@ static int da7219_dai_event(struct snd_soc_dapm_widget *w, } } +static int da7219_settling_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + switch (event) { + case SND_SOC_DAPM_POST_PMU: + case SND_SOC_DAPM_POST_PMD: + msleep(DA7219_SETTLING_DELAY); + break; + default: + break; + } + + return 0; +} + +static int da7219_mixout_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + u8 hp_ctrl, min_gain_mask; + + switch (w->reg) { + case DA7219_MIXOUT_L_CTRL: + hp_ctrl = DA7219_HP_L_CTRL; + min_gain_mask = DA7219_HP_L_AMP_MIN_GAIN_EN_MASK; + break; + case DA7219_MIXOUT_R_CTRL: + hp_ctrl = DA7219_HP_R_CTRL; + min_gain_mask = DA7219_HP_R_AMP_MIN_GAIN_EN_MASK; + break; + default: + return -EINVAL; + } + + switch (event) { + case SND_SOC_DAPM_PRE_PMD: + /* Enable minimum gain on HP to avoid pops */ + snd_soc_update_bits(codec, hp_ctrl, min_gain_mask, + min_gain_mask); + + msleep(DA7219_MIN_GAIN_DELAY); + + break; + case SND_SOC_DAPM_POST_PMU: + /* Remove minimum gain on HP */ + snd_soc_update_bits(codec, hp_ctrl, min_gain_mask, 0); + + break; + } + + return 0; +} + +static int da7219_gain_ramp_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + case SND_SOC_DAPM_PRE_PMD: + /* Ensure nominal gain ramping for DAPM sequence */ + da7219->gain_ramp_ctrl = + snd_soc_read(codec, DA7219_GAIN_RAMP_CTRL); + snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, + DA7219_GAIN_RAMP_RATE_NOMINAL); + break; + case SND_SOC_DAPM_POST_PMU: + case SND_SOC_DAPM_POST_PMD: + /* Restore previous gain ramp settings */ + snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, + da7219->gain_ramp_ctrl); + break; + } + + return 0; +} + /* * DAPM Widgets @@ -906,30 +985,46 @@ static const struct snd_soc_dapm_widget da7219_dapm_widgets[] = { ARRAY_SIZE(da7219_st_out_filtr_mix_controls)), /* DACs */ - SND_SOC_DAPM_DAC("DACL", NULL, DA7219_DAC_L_CTRL, DA7219_DAC_L_EN_SHIFT, - DA7219_NO_INVERT), - SND_SOC_DAPM_DAC("DACR", NULL, DA7219_DAC_R_CTRL, DA7219_DAC_R_EN_SHIFT, - DA7219_NO_INVERT), + SND_SOC_DAPM_DAC_E("DACL", NULL, DA7219_DAC_L_CTRL, + DA7219_DAC_L_EN_SHIFT, DA7219_NO_INVERT, + da7219_settling_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DACR", NULL, DA7219_DAC_R_CTRL, + DA7219_DAC_R_EN_SHIFT, DA7219_NO_INVERT, + da7219_settling_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), /* Output PGAs */ - SND_SOC_DAPM_PGA("Mixout Left PGA", DA7219_MIXOUT_L_CTRL, - DA7219_MIXOUT_L_AMP_EN_SHIFT, DA7219_NO_INVERT, - NULL, 0), - SND_SOC_DAPM_PGA("Mixout Right PGA", DA7219_MIXOUT_R_CTRL, - DA7219_MIXOUT_R_AMP_EN_SHIFT, DA7219_NO_INVERT, - NULL, 0), - SND_SOC_DAPM_PGA("Headphone Left PGA", DA7219_HP_L_CTRL, - DA7219_HP_L_AMP_EN_SHIFT, DA7219_NO_INVERT, NULL, 0), - SND_SOC_DAPM_PGA("Headphone Right PGA", DA7219_HP_R_CTRL, - DA7219_HP_R_AMP_EN_SHIFT, DA7219_NO_INVERT, NULL, 0), + SND_SOC_DAPM_PGA_E("Mixout Left PGA", DA7219_MIXOUT_L_CTRL, + DA7219_MIXOUT_L_AMP_EN_SHIFT, DA7219_NO_INVERT, + NULL, 0, da7219_mixout_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_PGA_E("Mixout Right PGA", DA7219_MIXOUT_R_CTRL, + DA7219_MIXOUT_R_AMP_EN_SHIFT, DA7219_NO_INVERT, + NULL, 0, da7219_mixout_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_SUPPLY_S("Headphone Left PGA", 1, DA7219_HP_L_CTRL, + DA7219_HP_L_AMP_EN_SHIFT, DA7219_NO_INVERT, + da7219_settling_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_SUPPLY_S("Headphone Right PGA", 1, DA7219_HP_R_CTRL, + DA7219_HP_R_AMP_EN_SHIFT, DA7219_NO_INVERT, + da7219_settling_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), /* Output Supplies */ - SND_SOC_DAPM_SUPPLY("Charge Pump", DA7219_CP_CTRL, DA7219_CP_EN_SHIFT, - DA7219_NO_INVERT, NULL, 0), + SND_SOC_DAPM_SUPPLY_S("Charge Pump", 0, DA7219_CP_CTRL, + DA7219_CP_EN_SHIFT, DA7219_NO_INVERT, + da7219_settling_event, + SND_SOC_DAPM_POST_PMU), /* Outputs */ SND_SOC_DAPM_OUTPUT("HPL"), SND_SOC_DAPM_OUTPUT("HPR"), + + /* Pre/Post Power */ + SND_SOC_DAPM_PRE("Pre Power Gain Ramp", da7219_gain_ramp_event), + SND_SOC_DAPM_POST("Post Power Gain Ramp", da7219_gain_ramp_event), }; @@ -1002,8 +1097,8 @@ static const struct snd_soc_dapm_route da7219_audio_map[] = { {"Mixout Left PGA", NULL, "DACL"}, {"Mixout Right PGA", NULL, "DACR"}, - {"Headphone Left PGA", NULL, "Mixout Left PGA"}, - {"Headphone Right PGA", NULL, "Mixout Right PGA"}, + {"HPL", NULL, "Mixout Left PGA"}, + {"HPR", NULL, "Mixout Right PGA"}, {"HPL", NULL, "Headphone Left PGA"}, {"HPR", NULL, "Headphone Right PGA"}, @@ -1711,6 +1806,14 @@ static int da7219_probe(struct snd_soc_codec *codec) DA7219_HP_R_AMP_RAMP_EN_MASK, DA7219_HP_R_AMP_RAMP_EN_MASK); + /* Default minimum gain on HP to avoid pops during DAPM sequencing */ + snd_soc_update_bits(codec, DA7219_HP_L_CTRL, + DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, + DA7219_HP_L_AMP_MIN_GAIN_EN_MASK); + snd_soc_update_bits(codec, DA7219_HP_R_CTRL, + DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, + DA7219_HP_R_AMP_MIN_GAIN_EN_MASK); + /* Default infinite tone gen, start/stop by Kcontrol */ snd_soc_write(codec, DA7219_TONE_GEN_CYCLES, DA7219_BEEP_CYCLES_MASK); diff --git a/sound/soc/codecs/da7219.h b/sound/soc/codecs/da7219.h index 66d3bad86739..6baba7455fa1 100644 --- a/sound/soc/codecs/da7219.h +++ b/sound/soc/codecs/da7219.h @@ -777,6 +777,10 @@ #define DA7219_SYS_STAT_CHECK_RETRIES 6 #define DA7219_SYS_STAT_CHECK_DELAY 50 +/* Power up/down Delays */ +#define DA7219_SETTLING_DELAY 40 +#define DA7219_MIN_GAIN_DELAY 30 + enum da7219_clk_src { DA7219_CLKSRC_MCLK = 0, DA7219_CLKSRC_MCLK_SQR, @@ -814,6 +818,7 @@ struct da7219_priv { bool master; bool alc_en; + u8 gain_ramp_ctrl; }; #endif /* __DA7219_H */ -- cgit v1.2.3 From 3b89e4b77ef9c2f985964fab17032db98f074ed0 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 8 Nov 2016 14:38:52 +0100 Subject: ASoC: lpass-platform: initialize dma channel number MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A bugfix accidentally removed the implicit initialization of the dma channel number, causing undefined behavior when v->alloc_dma_channel is NULL: sound/soc/qcom/lpass-platform.c: In function ‘lpass_platform_pcmops_open’: sound/soc/qcom/lpass-platform.c:83:29: error: ‘dma_ch’ may be used uninitialized in this function [-Werror=maybe-uninitialized] This adds back an explicit initialization to zero, restoring the previous behavior for that case. Fixes: 022d00ee0b55 ("ASoC: lpass-platform: Fix broken pcm data usage") Signed-off-by: Arnd Bergmann Acked-by: Kenneth Westfield Signed-off-by: Mark Brown --- sound/soc/qcom/lpass-platform.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'sound') diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index 07000f53db44..e223bc90b2ef 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -77,6 +77,9 @@ static int lpass_platform_pcmops_open(struct snd_pcm_substream *substream) if (v->alloc_dma_channel) dma_ch = v->alloc_dma_channel(drvdata, dir); + else + dma_ch = 0; + if (dma_ch < 0) return dma_ch; -- cgit v1.2.3