diff options
| author | ScottPeterson <speterson@nvidia.com> | 2012-01-17 17:32:11 -0800 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2012-01-30 13:28:18 -0800 |
| commit | 2e3c724c167ec5da8b1ed5ab07cda55232ecdf13 (patch) | |
| tree | d82c4c6da45dd46de1aa0c75393869470fe033e3 /sound/soc/tegra/tegra_aic326x.c | |
| parent | 6814bf677b18c10cee192e813d3d468b01229a25 (diff) | |
asoc:tegra: Support I2S slave mode
Support I2S slave mode. Disable pll_p_out1 and
pll_a to reduce power when in slave mode.
Slave mode disabled by default.
Reviewed-on: http://git-master/r/76046
Change-Id: I873a11d54f1e037d99c86ff4cec06ee83064902a
Signed-off-by: ScottPeterson <speterson@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/77765
Reviewed-by: Automatic_Commit_Validation_User
Diffstat (limited to 'sound/soc/tegra/tegra_aic326x.c')
| -rw-r--r-- | sound/soc/tegra/tegra_aic326x.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/sound/soc/tegra/tegra_aic326x.c b/sound/soc/tegra/tegra_aic326x.c index a7297a54233a..31afb907a653 100644 --- a/sound/soc/tegra/tegra_aic326x.c +++ b/sound/soc/tegra/tegra_aic326x.c @@ -237,6 +237,32 @@ static int tegra_aic326x_hw_params(struct snd_pcm_substream *substream, if (mclk < 0) return mclk; + +#if defined(CONFIG_ARCH_TEGRA_2x_SOC) + clk = clk_get_sys(NULL, "cdev1"); +#else + clk = clk_get_sys("extern1", NULL); +#endif + if (IS_ERR(clk)) { + dev_err(card->dev, "Can't retrieve clk cdev1\n"); + err = PTR_ERR(clk); + return err; + } + + rate = clk_get_rate(clk); + printk("extern1 rate=%d\n",rate); + +#if TEGRA30_I2S_MASTER_PLAYBACK + daifmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS; +#else + daifmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM; + mclk = rate; +#endif + err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); if (err < 0) { if (!(machine->util_data.set_mclk % mclk)) @@ -249,9 +275,6 @@ static int tegra_aic326x_hw_params(struct snd_pcm_substream *substream, tegra_asoc_utils_lock_clk_rate(&machine->util_data, 1); - daifmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | - SND_SOC_DAIFMT_CBS_CFS; - err = snd_soc_dai_set_fmt(codec_dai, daifmt); if (err < 0) { dev_err(card->dev, "codec_dai fmt not set\n"); |