ASoC: soc-core: remove bus_control

Now, snd_soc_dai_driver::bus_control is used for how to resume.
But, no driver which has bus_control has DAI driver suspend/resume
support.
This patch removes pointless bus_control from ALSA SoC.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pnffx7i4.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 2ccecf3..eaaeb00 100644 (file)
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -302,7 +302,6 @@ struct snd_soc_dai_driver {
        unsigned int symmetric_rates:1;
        unsigned int symmetric_channels:1;
        unsigned int symmetric_samplebits:1;
-       unsigned int bus_control:1; /* DAI is also used for the control bus */
 
        /* probe ordering - for components with runtime dependencies */
        int probe_order;

diff --git a/sound/soc/au1x/ac97c.c b/sound/soc/au1x/ac97c.c
index 0792c40..73c6a0e 100644 (file)
--- a/sound/soc/au1x/ac97c.c
+++ b/sound/soc/au1x/ac97c.c
@@ -206,7 +206,6 @@ static int au1xac97c_dai_probe(struct snd_soc_dai *dai)
 
 static struct snd_soc_dai_driver au1xac97c_dai_driver = {
        .name                   = "alchemy-ac97c",
-       .bus_control            = true,
        .probe                  = au1xac97c_dai_probe,
        .playback = {
                .rates          = AC97_RATES,

diff --git a/sound/soc/au1x/psc-ac97.c b/sound/soc/au1x/psc-ac97.c
index 08bc04e..0227993 100644 (file)
--- a/sound/soc/au1x/psc-ac97.c
+++ b/sound/soc/au1x/psc-ac97.c
@@ -339,7 +339,6 @@ static const struct snd_soc_dai_ops au1xpsc_ac97_dai_ops = {
 };
 
 static const struct snd_soc_dai_driver au1xpsc_ac97_dai_template = {
-       .bus_control            = true,
        .probe                  = au1xpsc_ac97_probe,
        .playback = {
                .rates          = AC97_RATES,

diff --git a/sound/soc/cirrus/ep93xx-ac97.c b/sound/soc/cirrus/ep93xx-ac97.c
index e21eaa1..1c45fb9 100644 (file)
--- a/sound/soc/cirrus/ep93xx-ac97.c
+++ b/sound/soc/cirrus/ep93xx-ac97.c
@@ -336,7 +336,6 @@ static const struct snd_soc_dai_ops ep93xx_ac97_dai_ops = {
 static struct snd_soc_dai_driver ep93xx_ac97_dai = {
        .name           = "ep93xx-ac97",
        .id             = 0,
-       .bus_control    = true,
        .probe          = ep93xx_ac97_dai_probe,
        .playback       = {
                .stream_name    = "AC97 Playback",

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 537dc69..5c97269 100644 (file)
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -1136,7 +1136,6 @@ static const struct snd_soc_component_driver fsl_ssi_component = {
 };
 
 static struct snd_soc_dai_driver fsl_ssi_ac97_dai = {
-       .bus_control = true,
        .symmetric_channels = 1,
        .probe = fsl_ssi_dai_probe,
        .playback = {

diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c
index 42031ba..f8488e8 100644 (file)
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -373,7 +373,6 @@ static struct snd_soc_dai_driver imx_ssi_dai = {
 
 static struct snd_soc_dai_driver imx_ac97_dai = {
        .probe = imx_ssi_dai_probe,
-       .bus_control = true,
        .playback = {
                .stream_name = "AC97 Playback",
                .channels_min = 2,

diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index e5b9c04..a082ae6 100644 (file)
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -233,7 +233,6 @@ static const struct snd_soc_dai_ops psc_ac97_digital_ops = {
 static struct snd_soc_dai_driver psc_ac97_dai[] = {
 {
        .name = "mpc5200-psc-ac97.0",
-       .bus_control = true,
        .probe  = psc_ac97_probe,
        .playback = {
                .stream_name    = "AC97 Playback",
@@ -253,7 +252,6 @@ static struct snd_soc_dai_driver psc_ac97_dai[] = {
 },
 {
        .name = "mpc5200-psc-ac97.1",
-       .bus_control = true,
        .playback = {
                .stream_name    = "AC97 SPDIF",
                .channels_min   = 1,

diff --git a/sound/soc/pxa/pxa2xx-ac97.c b/sound/soc/pxa/pxa2xx-ac97.c
index 22fe779..4240fde 100644 (file)
--- a/sound/soc/pxa/pxa2xx-ac97.c
+++ b/sound/soc/pxa/pxa2xx-ac97.c
@@ -157,7 +157,6 @@ static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
 static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
 {
        .name = "pxa2xx-ac97",
-       .bus_control = true,
        .playback = {
                .stream_name = "AC97 Playback",
                .channels_min = 2,
@@ -174,7 +173,6 @@ static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
 },
 {
        .name = "pxa2xx-ac97-aux",
-       .bus_control = true,
        .playback = {
                .stream_name = "AC97 Aux Playback",
                .channels_min = 1,
@@ -191,7 +189,6 @@ static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
 },
 {
        .name = "pxa2xx-ac97-mic",
-       .bus_control = true,
        .capture = {
                .stream_name = "AC97 Mic Capture",
                .channels_min = 1,

diff --git a/sound/soc/sh/hac.c b/sound/soc/sh/hac.c
index 17622ce..475fc98 100644 (file)
--- a/sound/soc/sh/hac.c
+++ b/sound/soc/sh/hac.c
@@ -270,7 +270,6 @@ static const struct snd_soc_dai_ops hac_dai_ops = {
 static struct snd_soc_dai_driver sh4_hac_dai[] = {
 {
        .name                   = "hac-dai.0",
-       .bus_control            = true,
        .playback = {
                .rates          = AC97_RATES,
                .formats        = AC97_FMTS,

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index b0ec323..f969a3b 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -712,8 +712,6 @@ static void soc_resume_deferred(struct work_struct *work)
 int snd_soc_resume(struct device *dev)
 {
        struct snd_soc_card *card = dev_get_drvdata(dev);
-       bool bus_control = false;
-       struct snd_soc_pcm_runtime *rtd;
        struct snd_soc_component *component;
 
        /* If the card is not initialized yet there is nothing to do */
@@ -725,25 +723,9 @@ int snd_soc_resume(struct device *dev)
                if (component->active)
                        pinctrl_pm_select_default_state(component->dev);
 
-       /*
-        * DAIs that also act as the control bus master might have other drivers
-        * hanging off them so need to resume immediately. Other drivers don't
-        * have that problem and may take a substantial amount of time to resume
-        * due to I/O costs and anti-pop so handle them out of line.
-        */
-       for_each_card_rtds(card, rtd) {
-               struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-
-               bus_control |= cpu_dai->driver->bus_control;
-       }
-       if (bus_control) {
-               dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
-               soc_resume_deferred(&card->deferred_resume_work);
-       } else {
-               dev_dbg(dev, "ASoC: Scheduling resume work\n");
-               if (!schedule_work(&card->deferred_resume_work))
-                       dev_err(dev, "ASoC: resume work item may be lost\n");
-       }
+       dev_dbg(dev, "ASoC: Scheduling resume work\n");
+       if (!schedule_work(&card->deferred_resume_work))
+               dev_err(dev, "ASoC: resume work item may be lost\n");
 
        return 0;
 }

diff --git a/sound/soc/tegra/tegra20_ac97.c b/sound/soc/tegra/tegra20_ac97.c
index 09c8516..06c728a 100644 (file)
--- a/sound/soc/tegra/tegra20_ac97.c
+++ b/sound/soc/tegra/tegra20_ac97.c
@@ -219,7 +219,6 @@ static int tegra20_ac97_probe(struct snd_soc_dai *dai)
 
 static struct snd_soc_dai_driver tegra20_ac97_dai = {
        .name = "tegra-ac97-pcm",
-       .bus_control = true,
        .probe = tegra20_ac97_probe,
        .playback = {
                .stream_name = "PCM Playback",

diff --git a/sound/soc/txx9/txx9aclc-ac97.c b/sound/soc/txx9/txx9aclc-ac97.c
index bfaa9b3..b1d9615 100644 (file)
--- a/sound/soc/txx9/txx9aclc-ac97.c
+++ b/sound/soc/txx9/txx9aclc-ac97.c
@@ -148,7 +148,6 @@ static int txx9aclc_ac97_remove(struct snd_soc_dai *dai)
 }
 
 static struct snd_soc_dai_driver txx9aclc_ac97_dai = {
-       .bus_control            = true,
        .probe                  = txx9aclc_ac97_probe,
        .remove                 = txx9aclc_ac97_remove,
        .playback = {