diff options
| author | Chandrakanth Gorantla <cgorantla@nvidia.com> | 2011-07-26 15:35:58 +0530 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2011-07-29 17:23:50 -0700 |
| commit | 37b499d25e09c6b3e3b56b4a2115a929d884b804 (patch) | |
| tree | bc158876005cbc0c610c5fc157567d61e71c4e06 /sound | |
| parent | 060b9ad49846795fede382b6e55a3a80f28d670d (diff) | |
ASOC: tegra: Power off max98088 codec in idle
When device doesnt play audio power off codec and
disable extern1 clock to save power.
Bug 853161
Change-Id: I4392dc56e5f597566075f99a034e697bf56176ab
Reviewed-on: http://git-master/r/43980
Reviewed-by: Scott Peterson <speterson@nvidia.com>
Tested-by: Chandrakanth Gorantla <cgorantla@nvidia.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/tegra/tegra_soc.h | 1 | ||||
| -rw-r--r-- | sound/soc/tegra/tegra_soc_max98088.c | 36 |
2 files changed, 30 insertions, 7 deletions
diff --git a/sound/soc/tegra/tegra_soc.h b/sound/soc/tegra/tegra_soc.h index d48ea1e69d01..566a82d7274b 100644 --- a/sound/soc/tegra/tegra_soc.h +++ b/sound/soc/tegra/tegra_soc.h @@ -114,6 +114,7 @@ struct tegra_audio_data { struct snd_soc_codec *codec; struct clk *dap_mclk; bool init_done; + enum snd_soc_bias_level bias_level; int play_device; int capture_device; diff --git a/sound/soc/tegra/tegra_soc_max98088.c b/sound/soc/tegra/tegra_soc_max98088.c index c6d3a758cee3..82e0c88cd239 100644 --- a/sound/soc/tegra/tegra_soc_max98088.c +++ b/sound/soc/tegra/tegra_soc_max98088.c @@ -209,6 +209,7 @@ static int tegra_spdif_hw_params(struct snd_pcm_substream *substream, int tegra_codec_startup(struct snd_pcm_substream *substream) { + tegra_das_enable_mclk(); tegra_das_power_mode(true); return 0; @@ -217,10 +218,12 @@ int tegra_codec_startup(struct snd_pcm_substream *substream) void tegra_codec_shutdown(struct snd_pcm_substream *substream) { tegra_das_power_mode(false); + tegra_das_disable_mclk(); } int tegra_soc_suspend_pre(struct platform_device *pdev, pm_message_t state) { + tegra_das_enable_mclk(); return 0; } @@ -240,9 +243,31 @@ int tegra_soc_resume_pre(struct platform_device *pdev) int tegra_soc_resume_post(struct platform_device *pdev) { + tegra_das_disable_mclk(); + return 0; +} + +static int tegra_soc_set_bias_level(struct snd_soc_card *card, + enum snd_soc_bias_level level) +{ + struct tegra_audio_data* audio_data = card->socdev->codec_data; + + if (audio_data->bias_level == SND_SOC_BIAS_OFF) { + tegra_das_enable_mclk(); + } + audio_data->bias_level = level; return 0; } +static int tegra_soc_set_bias_level_post(struct snd_soc_card *card, + enum snd_soc_bias_level level) +{ + if (level == SND_SOC_BIAS_OFF) { + tegra_das_disable_mclk(); + } + return 0 ; +} + static struct snd_soc_ops tegra_hifi_ops = { .hw_params = tegra_hifi_hw_params, .startup = tegra_codec_startup, @@ -405,13 +430,7 @@ static int tegra_codec_init(struct snd_soc_codec *codec) goto max98088_init_fail; } - err = tegra_das_enable_mclk(); - if (err) { - pr_err(" Failed to enable dap mclk\n"); - err = -ENODEV; - goto max98088_init_fail; - } - + codec->idle_bias_off = 1; /* Add tegra specific widgets */ snd_soc_dapm_new_controls(codec, tegra_dapm_widgets, ARRAY_SIZE(tegra_dapm_widgets)); @@ -517,6 +536,7 @@ static struct snd_soc_dai_link tegra_soc_dai[] = { static struct tegra_audio_data audio_data = { .init_done = 0, + .bias_level = SND_SOC_BIAS_OFF, .play_device = TEGRA_AUDIO_DEVICE_NONE, .capture_device = TEGRA_AUDIO_DEVICE_NONE, .is_call_mode = false, @@ -532,6 +552,8 @@ static struct snd_soc_card tegra_snd_soc = { .suspend_post = tegra_soc_suspend_post, .resume_pre = tegra_soc_resume_pre, .resume_post = tegra_soc_resume_post, + .set_bias_level = tegra_soc_set_bias_level, + .set_bias_level_post = tegra_soc_set_bias_level_post, }; static struct snd_soc_device tegra_snd_devdata = { |