ASoC: Decouple DAPM from CODECs

Decoupling Dynamic Audio Power Management (DAPM) from codec devices is
required when developing ASoC further. Such as for other ASoC components to
have DAPM widgets or when extending DAPM to handle cross-device paths.

This patch decouples DAPM related variables from struct snd_soc_codec and
moves them to new struct snd_soc_dapm_context that is used to encapsulate
DAPM context of a device. ASoC core and API of DAPM functions are modified
to use DAPM context instead of codec.

This patch does not change current functionality and a large part of changes
come because of structure and internal API changes.

Core implementation is from Liam Girdwood <lrg@slimlogic.co.uk> with some
minor core changes, codecs and machine driver conversions from
Jarkko Nikula <jhnikula@gmail.com>.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Cliff Cai <cliff.cai@analog.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Cc: Timur Tabi <timur@freescale.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jassi Brar <jassi.brar@samsung.com>
Cc: Daniel Gloeckner <dg@emlix.com>
Cc: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 15 insertions, 13 deletions

diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index f4f1fba38eb9..4c6c81e11544 100644
--- a/sound/soc/codecs/wm8350.c
+++ b/sound/soc/codecs/wm8350.c
@@ -230,8 +230,9 @@ static inline int wm8350_out2_ramp_step(struct snd_soc_codec *codec)
  */
 static void wm8350_pga_work(struct work_struct *work)
 {
-        struct snd_soc_codec *codec =
-            container_of(work, struct snd_soc_codec, delayed_work.work);
+        struct snd_soc_dapm_context *dapm =
+            container_of(work, struct snd_soc_dapm_context, delayed_work.work);
+        struct snd_soc_codec *codec = dapm->codec;
         struct wm8350_data *wm8350_data = snd_soc_codec_get_drvdata(codec);
         struct wm8350_output *out1 = &wm8350_data->out1,
             *out2 = &wm8350_data->out2;
@@ -302,8 +303,8 @@ static int pga_event(struct snd_soc_dapm_widget *w,
                 out->ramp = WM8350_RAMP_UP;
                 out->active = 1;
 
-                if (!delayed_work_pending(&codec->delayed_work))
-                        schedule_delayed_work(&codec->delayed_work,
+                if (!delayed_work_pending(&codec->dapm.delayed_work))
+                        schedule_delayed_work(&codec->dapm.delayed_work,
                                               msecs_to_jiffies(1));
                 break;
 
@@ -311,8 +312,8 @@ static int pga_event(struct snd_soc_dapm_widget *w,
                 out->ramp = WM8350_RAMP_DOWN;
                 out->active = 0;
 
-                if (!delayed_work_pending(&codec->delayed_work))
-                        schedule_delayed_work(&codec->delayed_work,
+                if (!delayed_work_pending(&codec->dapm.delayed_work))
+                        schedule_delayed_work(&codec->dapm.delayed_work,
                                               msecs_to_jiffies(1));
                 break;
         }
@@ -786,9 +787,10 @@ static const struct snd_soc_dapm_route audio_map[] = {
 
 static int wm8350_add_widgets(struct snd_soc_codec *codec)
 {
+        struct snd_soc_dapm_context *dapm = &codec->dapm;
         int ret;
 
-        ret = snd_soc_dapm_new_controls(codec,
+        ret = snd_soc_dapm_new_controls(dapm,
                                         wm8350_dapm_widgets,
                                         ARRAY_SIZE(wm8350_dapm_widgets));
         if (ret != 0) {
@@ -797,7 +799,7 @@ static int wm8350_add_widgets(struct snd_soc_codec *codec)
         }
 
         /* set up audio paths */
-        ret = snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+        ret = snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
         if (ret != 0) {
                 dev_err(codec->dev, "DAPM route register failed\n");
                 return ret;
@@ -1184,7 +1186,7 @@ static int wm8350_set_bias_level(struct snd_soc_codec *codec,
                 break;
 
         case SND_SOC_BIAS_STANDBY:
-                if (codec->bias_level == SND_SOC_BIAS_OFF) {
+                if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
                         ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies),
                                                     priv->supplies);
                         if (ret != 0)
@@ -1317,7 +1319,7 @@ static int wm8350_set_bias_level(struct snd_soc_codec *codec,
                                        priv->supplies);
                 break;
         }
-        codec->bias_level = level;
+        codec->dapm.bias_level = level;
         return 0;
 }
 
@@ -1550,7 +1552,7 @@ static  int wm8350_codec_probe(struct snd_soc_codec *codec)
         /* Put the codec into reset if it wasn't already */
         wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_5, WM8350_CODEC_ENA);
 
-        INIT_DELAYED_WORK(&codec->delayed_work, wm8350_pga_work);
+        INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8350_pga_work);
 
         /* Enable the codec */
         wm8350_set_bits(wm8350, WM8350_POWER_MGMT_5, WM8350_CODEC_ENA);
@@ -1635,12 +1637,12 @@ static int  wm8350_codec_remove(struct snd_soc_codec *codec)
         priv->mic.jack = NULL;
 
         /* cancel any work waiting to be queued. */
-        ret = cancel_delayed_work(&codec->delayed_work);
+        ret = cancel_delayed_work(&codec->dapm.delayed_work);
 
         /* if there was any work waiting then we run it now and
          * wait for its completion */
         if (ret) {
-                schedule_delayed_work(&codec->delayed_work, 0);
+                schedule_delayed_work(&codec->dapm.delayed_work, 0);
                 flush_scheduled_work();
         }