diff options
| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2010-05-26 11:38:18 +0300 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2010-05-31 11:08:58 +0100 |
| commit | 9fdcc0f72af8801d8429a465a159d815774dbf6d (patch) | |
| tree | 7c2d0ac449467722ebf0026003d9b56277255236 /sound/soc/codecs/twl4030.c | |
| parent | ee4ccac7cea0e4a4f44bbb109285129e1b293461 (diff) | |
ASoC: TWL4030: Helper to check chip default registers
Since the twl4030 codec driver supports different version
of the PM chip, a helper function can come handy, which
can check the driver's default versus the chip values.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound/soc/codecs/twl4030.c')
| -rw-r--r-- | sound/soc/codecs/twl4030.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index 08f24de406c2..30b7bbaf6aed 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -243,6 +243,25 @@ static void twl4030_codec_enable(struct snd_soc_codec *codec, int enable) udelay(10); } +static inline void twl4030_check_defaults(struct snd_soc_codec *codec) +{ + int i, difference = 0; + u8 val; + + dev_dbg(codec->dev, "Checking TWL audio default configuration\n"); + for (i = 1; i <= TWL4030_REG_MISC_SET_2; i++) { + twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val, i); + if (val != twl4030_reg[i]) { + difference++; + dev_dbg(codec->dev, + "Reg 0x%02x: chip: 0x%02x driver: 0x%02x\n", + i, val, twl4030_reg[i]); + } + } + dev_dbg(codec->dev, "Found %d non maching registers. %s\n", + difference, difference ? "Not OK" : "OK"); +} + static void twl4030_init_chip(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); @@ -252,8 +271,12 @@ static void twl4030_init_chip(struct platform_device *pdev) u8 reg, byte; int i = 0; + /* Check defaults, if instructed before anything else */ + if (setup && setup->check_defaults) + twl4030_check_defaults(codec); + /* Refresh APLL_CTL register from HW */ - twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte, + twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte, TWL4030_REG_APLL_CTL); twl4030_write_reg_cache(codec, TWL4030_REG_APLL_CTL, byte); |