diff options
| author | Nikesh Oswal <noswal@nvidia.com> | 2011-12-13 15:10:28 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-15 12:11:53 +0530 |
| commit | c7eca96f46f1162893f1031d406e22d2e20b061a (patch) | |
| tree | e4b48cbea1c90cf2235f5b93f72823be03e51872 /sound/soc/tegra/tegra20_spdif.h | |
| parent | e3794ce5d5d055f9e7939874297e0fe12e41e619 (diff) | |
asoc: tegra: restore i2s/das/spdif registers after suspend for t20
when system resumes from suspend state the i2s/das/spdif registers
have power on reset values, this change restores the registers
with their prior values from cache
Bug: 904530
Change-Id: I35c14d95d2d6bf5bc116a1a80e21f4904c8969e5
Signed-off-by: Nikesh Oswal <noswal@nvidia.com>
Reviewed-on: http://git-master/r/69715
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-by: Scott Peterson <speterson@nvidia.com>
Diffstat (limited to 'sound/soc/tegra/tegra20_spdif.h')
| -rw-r--r-- | sound/soc/tegra/tegra20_spdif.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra20_spdif.h b/sound/soc/tegra/tegra20_spdif.h index 1938aa67917f..c1fb6ed2a79f 100644 --- a/sound/soc/tegra/tegra20_spdif.h +++ b/sound/soc/tegra/tegra20_spdif.h @@ -535,6 +535,10 @@ * This 4-word deep FIFO transmits user FIFO field information. The order of * transmission is from LSB to MSB bit. */ +#ifdef CONFIG_PM +#define TEGRA20_SPDIF_CTRL_CACHE_SIZE ((TEGRA20_SPDIF_DATA_FIFO_CSR >> 2) + 1) +#define TEGRA20_SPDIF_TX_CACHE_SIZE (((TEGRA20_SPDIF_CH_STA_TX_F - TEGRA20_SPDIF_CH_STA_TX_A) >> 2) + 1) +#endif struct tegra20_spdif { struct clk *clk_spdif_out; @@ -543,6 +547,10 @@ struct tegra20_spdif { void __iomem *regs; struct dentry *debug; u32 reg_ctrl; +#ifdef CONFIG_PM + u32 reg_ctrl_cache[TEGRA20_SPDIF_CTRL_CACHE_SIZE]; + u32 reg_tx_cache[TEGRA20_SPDIF_TX_CACHE_SIZE]; +#endif }; #endif |