ASoC: TWL4030: Add support for platform dependent configuration

twl4030_setup_data structure can be passed from platform drivers to
the codec via the snd_soc_device->codec_data pointer.

Currently the setup data has support for the Headset pop-removal
related configuration, which differs from board to board.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 24 insertions, 3 deletions

diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index f554672f67c1..584507f71efb 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -1997,6 +1997,8 @@ static int twl4030_resume(struct platform_device *pdev)
 static int twl4030_init(struct snd_soc_device *socdev)
 {
         struct snd_soc_codec *codec = socdev->card->codec;
+        struct twl4030_setup_data *setup = socdev->codec_data;
+        struct twl4030_priv *twl4030 = codec->private_data;
         int ret = 0;
 
         printk(KERN_INFO "TWL4030 Audio Codec init \n");
@@ -2014,6 +2016,23 @@ static int twl4030_init(struct snd_soc_device *socdev)
         if (codec->reg_cache == NULL)
                 return -ENOMEM;
 
+        /* Configuration for headset ramp delay from setup data */
+        if (setup) {
+                unsigned char hs_pop;
+
+                if (setup->sysclk)
+                        twl4030->sysclk = setup->sysclk;
+                else
+                        twl4030->sysclk = 26000;
+
+                hs_pop = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
+                hs_pop &= ~TWL4030_RAMP_DELAY;
+                hs_pop |= (setup->ramp_delay_value << 2);
+                twl4030_write_reg_cache(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
+        } else {
+                twl4030->sysclk = 26000;
+        }
+
         /* register pcms */
         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
         if (ret < 0) {
@@ -2063,9 +2082,6 @@ static int twl4030_probe(struct platform_device *pdev)
                 kfree(codec);
                 return -ENOMEM;
         }
-        /* Set default sysclk (used by the headsetl/rpga_event callback for
-         * pop-attenuation) */
-        twl4030->sysclk = 26000;
 
         codec->private_data = twl4030;
         socdev->card->codec = codec;
diff --git a/sound/soc/codecs/twl4030.h b/sound/soc/codecs/twl4030.h
index 9668bdf430fb..48326e2bd9de 100644
--- a/sound/soc/codecs/twl4030.h
+++ b/sound/soc/codecs/twl4030.h
@@ -266,4 +266,9 @@
 extern struct snd_soc_dai twl4030_dai[2];
 extern struct snd_soc_codec_device soc_codec_dev_twl4030;
 
+struct twl4030_setup_data {
+        unsigned int ramp_delay_value;
+        unsigned int sysclk;
+};
+
 #endif  /* End of __TWL4030_AUDIO_H__ */