diff options
| author | Ken Chang <kenc@nvidia.com> | 2011-12-09 08:05:51 +0800 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-15 11:53:40 +0530 |
| commit | df107dd9440b5942717225ea8a58f68672cfd7ff (patch) | |
| tree | 63cf3617e52f769e16fcadfaa17224fa79707cea /sound/soc/tegra | |
| parent | 2a7a660504da6d13a0198d3c12dbe33843838392 (diff) | |
asoc: tegra: init cache values for i2s register
init i2s->reg_cache[] by reading i2s regs in probe function.
bug 911332
Change-Id: I58711b5b8a1866878e9de02144396883df6ff3da
Signed-off-by: Ken Chang <kenc@nvidia.com>
Reviewed-on: http://git-master/r/69081
Reviewed-by: Scott Peterson <speterson@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-by: Ravindra Lokhande <rlokhande@nvidia.com>
Diffstat (limited to 'sound/soc/tegra')
| -rw-r--r-- | sound/soc/tegra/tegra30_i2s.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c index 81b47600f52f..a789dbba3c48 100644 --- a/sound/soc/tegra/tegra30_i2s.c +++ b/sound/soc/tegra/tegra30_i2s.c @@ -447,10 +447,19 @@ static int tegra30_i2s_trigger(struct snd_pcm_substream *substream, int cmd, static int tegra30_i2s_probe(struct snd_soc_dai *dai) { struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai); + int i; dai->capture_dma_data = &i2s->capture_dma_data; dai->playback_dma_data = &i2s->playback_dma_data; + tegra30_i2s_enable_clocks(i2s); + + /*cache the POR values of i2s regs*/ + for (i = 0; i < ((TEGRA30_I2S_CIF_TX_CTRL>>2) + 1); i++) + i2s->reg_cache[i] = tegra30_i2s_read(i2s, i<<2); + + tegra30_i2s_disable_clocks(i2s); + return 0; } |