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, 9 insertions, 7 deletions

diff --git a/sound/soc/s3c24xx/smdk64xx_wm8580.c b/sound/soc/s3c24xx/smdk64xx_wm8580.c
index 052e499b68d1..291939cf8483 100644
--- a/sound/soc/s3c24xx/smdk64xx_wm8580.c
+++ b/sound/soc/s3c24xx/smdk64xx_wm8580.c
@@ -182,21 +182,22 @@ static const struct snd_soc_dapm_route audio_map_rx[] = {
 static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_dapm_context *dapm = &codec->dapm;
 
 	/* Add smdk64xx specific Capture widgets */
-	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
+	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
 				  ARRAY_SIZE(wm8580_dapm_widgets_cpt));
 
 	/* Set up PAIFTX audio path */
-	snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx));
+	snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
 
 	/* Enabling the microphone requires the fitting of a 0R
 	 * resistor to connect the line from the microphone jack.
 	 */
-	snd_soc_dapm_disable_pin(codec, "MicIn");
+	snd_soc_dapm_disable_pin(dapm, "MicIn");
 
 	/* signal a DAPM event */
-	snd_soc_dapm_sync(codec);
+	snd_soc_dapm_sync(dapm);
 
 	return 0;
 }
@@ -204,16 +205,17 @@ static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
 static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_dapm_context *dapm = &codec->dapm;
 
 	/* Add smdk64xx specific Playback widgets */
-	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
+	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
 				  ARRAY_SIZE(wm8580_dapm_widgets_pbk));
 
 	/* Set up PAIFRX audio path */
-	snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));
+	snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
 
 	/* signal a DAPM event */
-	snd_soc_dapm_sync(codec);
+	snd_soc_dapm_sync(dapm);
 
 	return 0;
 }