The patch

ASoC: dapm: Support second register for DAPM control updates

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From e411b0b5eb9b65257a050eac333d181d6e00e2c6 Mon Sep 17 00:00:00 2001

From: Chen-Yu Tsai wens@csie.org Date: Wed, 2 Nov 2016 15:35:58 +0800 Subject: [PATCH] ASoC: dapm: Support second register for DAPM control updates

To support double channel shared controls split across 2 registers, one for each channel, we must be able to update both registers together.

Add a second set of register fields to struct snd_soc_dapm_update, and update the DAPM control writeback (put) callbacks to support this.

For codecs that use custom events which call into DAPM to do updates, also clear struct snd_soc_dapm_update before using it, so the second set of fields remains clean.

Signed-off-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Mark Brown broonie@kernel.org --- include/sound/soc-dapm.h | 4 ++++ sound/soc/codecs/adau17x1.c | 2 +- sound/soc/codecs/tlv320aic3x.c | 2 +- sound/soc/codecs/wm9712.c | 2 +- sound/soc/codecs/wm9713.c | 2 +- sound/soc/soc-dapm.c | 13 +++++++++++-- 6 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index f60d755f7ac6..d5f4677776ce 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -615,6 +615,10 @@ struct snd_soc_dapm_update { int reg; int mask; int val; + int reg2; + int mask2; + int val2; + bool has_second_set; };

struct snd_soc_dapm_wcache { diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c index 439aa3ff1f99..b36511d965c8 100644 --- a/sound/soc/codecs/adau17x1.c +++ b/sound/soc/codecs/adau17x1.c @@ -160,7 +160,7 @@ static int adau17x1_dsp_mux_enum_put(struct snd_kcontrol *kcontrol, struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); struct adau *adau = snd_soc_codec_get_drvdata(codec); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; - struct snd_soc_dapm_update update; + struct snd_soc_dapm_update update = { 0 }; unsigned int stream = e->shift_l; unsigned int val, change; int reg; diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index 5a8d96ec058c..8877b74b0510 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -157,7 +157,7 @@ static int snd_soc_dapm_put_volsw_aic3x(struct snd_kcontrol *kcontrol, unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; unsigned short val; - struct snd_soc_dapm_update update; + struct snd_soc_dapm_update update = { 0 }; int connect, change;

val = (ucontrol->value.integer.value[0] & mask); diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c index 557709eac698..85f7c5bb8b82 100644 --- a/sound/soc/codecs/wm9712.c +++ b/sound/soc/codecs/wm9712.c @@ -187,7 +187,7 @@ static int wm9712_hp_mixer_put(struct snd_kcontrol *kcontrol, struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int mixer, mask, shift, old; - struct snd_soc_dapm_update update; + struct snd_soc_dapm_update update = { 0 }; bool change;

mixer = mc->shift >> 8; diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c index e4301ddb1b84..7e4822185feb 100644 --- a/sound/soc/codecs/wm9713.c +++ b/sound/soc/codecs/wm9713.c @@ -231,7 +231,7 @@ static int wm9713_hp_mixer_put(struct snd_kcontrol *kcontrol, struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int mixer, mask, shift, old; - struct snd_soc_dapm_update update; + struct snd_soc_dapm_update update = { 0 }; bool change;

mixer = mc->shift >> 8; diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 3bbe32ee4630..32e7af9b93d5 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -1626,6 +1626,15 @@ static void dapm_widget_update(struct snd_soc_card *card) dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n", w->name, ret);

+ if (update->has_second_set) { + ret = soc_dapm_update_bits(w->dapm, update->reg2, + update->mask2, update->val2); + if (ret < 0) + dev_err(w->dapm->dev, + "ASoC: %s DAPM update failed: %d\n", + w->name, ret); + } + for (wi = 0; wi < wlist->num_widgets; wi++) { w = wlist->widgets[wi];

@@ -3084,7 +3093,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, unsigned int invert = mc->invert; unsigned int val; int connect, change, reg_change = 0; - struct snd_soc_dapm_update update; + struct snd_soc_dapm_update update = { NULL }; int ret = 0;

if (snd_soc_volsw_is_stereo(mc)) @@ -3192,7 +3201,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, unsigned int *item = ucontrol->value.enumerated.item; unsigned int val, change, reg_change = 0; unsigned int mask; - struct snd_soc_dapm_update update; + struct snd_soc_dapm_update update = { NULL }; int ret = 0;

if (item[0] >= e->items)

The patch

ASoC: dapm: Implement stereo mixer control support

has been applied to the asoc tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From e7aa450fe17890e59db7d3c2d8eff5b6b41fc531 Mon Sep 17 00:00:00 2001

From: Chen-Yu Tsai wens@csie.org Date: Wed, 2 Nov 2016 15:35:59 +0800 Subject: [PATCH] ASoC: dapm: Implement stereo mixer control support

While DAPM is mono or single channel, its controls can be shared between widgets, such as sharing one stereo mixer control between the left and right channel widgets. An example such as the following routes

[Line In Left]----------<Line In Playback Switch>-------[Left Mixer] ^ ^ ^ | ^ (inputs) (paths) <shared stereo mixer control> (outputs) v v | v v [Line In Right]---------<Line In Playback Switch>-------[Right Mixer]

where we have separate widgets and paths for the left and right channels from "Line In" to "Mixer", but a shared stereo mixer control for the 2 paths.

This patch introduces support for such shared mixer controls, allowing more than 1 path to be attached to a single stereo control, and being able to control left/right channels independently.

Signed-off-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-dapm.c | 141 ++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 112 insertions(+), 29 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 32e7af9b93d5..27dd02e57b31 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -330,6 +330,11 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, case snd_soc_dapm_mixer_named_ctl: mc = (struct soc_mixer_control *)kcontrol->private_value;

+ if (mc->autodisable && snd_soc_volsw_is_stereo(mc)) + dev_warn(widget->dapm->dev, + "ASoC: Unsupported stereo autodisable control '%s'\n", + ctrl_name); + if (mc->autodisable) { struct snd_soc_dapm_widget template;

@@ -723,7 +728,8 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, }

/* set up initial codec paths */ -static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i) +static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i, + int nth_path) { struct soc_mixer_control *mc = (struct soc_mixer_control *) p->sink->kcontrol_news[i].private_value; @@ -736,7 +742,25 @@ static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)

if (reg != SND_SOC_NOPM) { soc_dapm_read(p->sink->dapm, reg, &val); - val = (val >> shift) & mask; + /* + * The nth_path argument allows this function to know + * which path of a kcontrol it is setting the initial + * status for. Ideally this would support any number + * of paths and channels. But since kcontrols only come + * in mono and stereo variants, we are limited to 2 + * channels. + * + * The following code assumes for stereo controls the + * first path is the left channel, and all remaining + * paths are the right channel. + */ + if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) { + if (reg != mc->rreg) + soc_dapm_read(p->sink->dapm, mc->rreg, &val); + val = (val >> mc->rshift) & mask; + } else { + val = (val >> shift) & mask; + } if (invert) val = max - val; p->connect = !!val; @@ -749,13 +773,13 @@ static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i) static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_path *path, const char *control_name) { - int i; + int i, nth_path = 0;

/* search for mixer kcontrol */ for (i = 0; i < path->sink->num_kcontrols; i++) { if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) { path->name = path->sink->kcontrol_news[i].name; - dapm_set_mixer_path_status(path, i); + dapm_set_mixer_path_status(path, i, nth_path++); return 0; } } @@ -2186,7 +2210,8 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);

/* test and update the power status of a mixer or switch widget */ static int soc_dapm_mixer_update_power(struct snd_soc_card *card, - struct snd_kcontrol *kcontrol, int connect) + struct snd_kcontrol *kcontrol, + int connect, int rconnect) { struct snd_soc_dapm_path *path; int found = 0; @@ -2195,8 +2220,33 @@ static int soc_dapm_mixer_update_power(struct snd_soc_card *card,

/* find dapm widget path assoc with kcontrol */ dapm_kcontrol_for_each_path(path, kcontrol) { + /* + * Ideally this function should support any number of + * paths and channels. But since kcontrols only come + * in mono and stereo variants, we are limited to 2 + * channels. + * + * The following code assumes for stereo controls the + * first path (when 'found == 0') is the left channel, + * and all remaining paths (when 'found == 1') are the + * right channel. + * + * A stereo control is signified by a valid 'rconnect' + * value, either 0 for unconnected, or >= 0 for connected. + * This is chosen instead of using snd_soc_volsw_is_stereo, + * so that the behavior of snd_soc_dapm_mixer_update_power + * doesn't change even when the kcontrol passed in is + * stereo. + * + * It passes 'connect' as the path connect status for + * the left channel, and 'rconnect' for the right + * channel. + */ + if (found && rconnect >= 0) + soc_dapm_connect_path(path, rconnect, "mixer update"); + else + soc_dapm_connect_path(path, connect, "mixer update"); found = 1; - soc_dapm_connect_path(path, connect, "mixer update"); }

if (found) @@ -2214,7 +2264,7 @@ int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,

mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); card->update = update; - ret = soc_dapm_mixer_update_power(card, kcontrol, connect); + ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1); card->update = NULL; mutex_unlock(&card->dapm_mutex); if (ret > 0) @@ -3039,22 +3089,28 @@ int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, int reg = mc->reg; unsigned int shift = mc->shift; int max = mc->max; + unsigned int width = fls(max); unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; - unsigned int val; + unsigned int reg_val, val, rval = 0; int ret = 0;

- if (snd_soc_volsw_is_stereo(mc)) - dev_warn(dapm->dev, - "ASoC: Control '%s' is stereo, which is not supported\n", - kcontrol->id.name); - mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) { - ret = soc_dapm_read(dapm, reg, &val); - val = (val >> shift) & mask; + ret = soc_dapm_read(dapm, reg, &reg_val); + val = (reg_val >> shift) & mask; + + if (ret == 0 && reg != mc->rreg) + ret = soc_dapm_read(dapm, mc->rreg, &reg_val); + + if (snd_soc_volsw_is_stereo(mc)) + rval = (reg_val >> mc->rshift) & mask; } else { - val = dapm_kcontrol_get_value(kcontrol); + reg_val = dapm_kcontrol_get_value(kcontrol); + val = reg_val & mask; + + if (snd_soc_volsw_is_stereo(mc)) + rval = (reg_val >> width) & mask; } mutex_unlock(&card->dapm_mutex);

@@ -3066,6 +3122,13 @@ int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, else ucontrol->value.integer.value[0] = val;

+ if (snd_soc_volsw_is_stereo(mc)) { + if (invert) + ucontrol->value.integer.value[1] = max - rval; + else + ucontrol->value.integer.value[1] = rval; + } + return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); @@ -3089,46 +3152,66 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, int reg = mc->reg; unsigned int shift = mc->shift; int max = mc->max; - unsigned int mask = (1 << fls(max)) - 1; + unsigned int width = fls(max); + unsigned int mask = (1 << width) - 1; unsigned int invert = mc->invert; - unsigned int val; - int connect, change, reg_change = 0; + unsigned int val, rval = 0; + int connect, rconnect = -1, change, reg_change = 0; struct snd_soc_dapm_update update = { NULL }; int ret = 0;

- if (snd_soc_volsw_is_stereo(mc)) - dev_warn(dapm->dev, - "ASoC: Control '%s' is stereo, which is not supported\n", - kcontrol->id.name); - val = (ucontrol->value.integer.value[0] & mask); connect = !!val;

if (invert) val = max - val;

+ if (snd_soc_volsw_is_stereo(mc)) { + rval = (ucontrol->value.integer.value[1] & mask); + rconnect = !!rval; + if (invert) + rval = max - rval; + } + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

- change = dapm_kcontrol_set_value(kcontrol, val); + /* This assumes field width < (bits in unsigned int / 2) */ + if (width > sizeof(unsigned int) * 8 / 2) + dev_warn(dapm->dev, + "ASoC: control %s field width limit exceeded\n", + kcontrol->id.name); + change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));

if (reg != SND_SOC_NOPM) { - mask = mask << shift; val = val << shift; + rval = rval << mc->rshift; + + reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);

- reg_change = soc_dapm_test_bits(dapm, reg, mask, val); + if (snd_soc_volsw_is_stereo(mc)) + reg_change |= soc_dapm_test_bits(dapm, mc->rreg, + mask << mc->rshift, + rval); }

if (change || reg_change) { if (reg_change) { + if (snd_soc_volsw_is_stereo(mc)) { + update.has_second_set = true; + update.reg2 = mc->rreg; + update.mask2 = mask << mc->rshift; + update.val2 = rval; + } update.kcontrol = kcontrol; update.reg = reg; - update.mask = mask; + update.mask = mask << shift; update.val = val; card->update = &update; } change |= reg_change;

- ret = soc_dapm_mixer_update_power(card, kcontrol, connect); + ret = soc_dapm_mixer_update_power(card, kcontrol, connect, + rconnect);

card->update = NULL; }