diff options
| author | Jon Mayo <jmayo@nvidia.com> | 2012-12-06 17:19:51 -0800 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 12:46:11 -0700 |
| commit | d9d1fb88d19220ca2bcae2092f7e29da2a7f74fd (patch) | |
| tree | cd4e1fb867a15cb9d62757a0546c699170c215b0 /sound/pci | |
| parent | 016b3b5e71c6905a262705f8aade5dab4441b594 (diff) | |
ALSA: hda: powergate HDA when clock gating
Use powergating APIs to ensure that HDA and display play nice.
Export powergate APIs so snd-intel-hda can be built as a module.
Bug 1178366
Change-Id: I30559b9288fcbd86615a674756e70f04c9fb5d83
Signed-off-by: Jon Mayo <jmayo@nvidia.com>
Reviewed-on: http://git-master/r/169245
Reviewed-by: Automatic_Commit_Validation_User
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index a45efd3b18f1..e65988de3330 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -67,6 +67,9 @@ #ifdef CONFIG_SND_HDA_VPR #include <linux/nvmap.h> #endif +#ifdef CONFIG_SND_HDA_PLATFORM_NVIDIA_TEGRA +#include <mach/powergate.h> +#endif static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; @@ -1512,10 +1515,17 @@ static void azx_platform_enable_clocks(struct azx *chip) { int i; +#ifdef CONFIG_SND_HDA_PLATFORM_NVIDIA_TEGRA +#if defined(CONFIG_ARCH_TEGRA_11x_SOC) + tegra_unpowergate_partition(TEGRA_POWERGATE_DISB); +#endif +#endif + for (i = 0; i < chip->platform_clk_count; i++) clk_enable(chip->platform_clks[i]); chip->platform_clk_enable++; + } static void azx_platform_disable_clocks(struct azx *chip) @@ -1528,6 +1538,12 @@ static void azx_platform_disable_clocks(struct azx *chip) for (i = 0; i < chip->platform_clk_count; i++) clk_disable(chip->platform_clks[i]); +#ifdef CONFIG_SND_HDA_PLATFORM_NVIDIA_TEGRA +#if defined(CONFIG_ARCH_TEGRA_11x_SOC) + tegra_powergate_partition(TEGRA_POWERGATE_DISB); +#endif +#endif + chip->platform_clk_enable--; } #endif /* CONFIG_SND_HDA_PLATFORM_DRIVER */ |