diff options
| author | Nikesh Oswal <noswal@nvidia.com> | 2011-12-13 11:41:47 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-15 13:57:42 +0530 |
| commit | 599e03383493f7a15c46730a85458465467dddeb (patch) | |
| tree | 9394f20ec0e1cd52b46127008550dceb87e48f88 /sound/soc/tegra/tegra30_dam.c | |
| parent | 41e98204edf77b4240702237da8bf02b93d74685 (diff) | |
asoc: tegra: init cache values for dam/ahub/apbif registers
init cache values for dam/ahub/apbif register by reading
the power on reset values in respective driver probe functions
bug 911332
Change-Id: I693baeff3e076095d3c7f225f1768a4082f7d305
Signed-off-by: Nikesh Oswal <noswal@nvidia.com>
Reviewed-on: http://git-master/r/69679
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Diffstat (limited to 'sound/soc/tegra/tegra30_dam.c')
| -rw-r--r-- | sound/soc/tegra/tegra30_dam.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/sound/soc/tegra/tegra30_dam.c b/sound/soc/tegra/tegra30_dam.c index fa3d5de4e42d..430374820b97 100644 --- a/sound/soc/tegra/tegra30_dam.c +++ b/sound/soc/tegra/tegra30_dam.c @@ -525,7 +525,7 @@ static int __devinit tegra30_dam_probe(struct platform_device *pdev) { struct resource *res, *region; struct tegra30_dam_context *dam; - int ret = 0; + int ret = 0, i; if ((pdev->id < 0) || (pdev->id >= TEGRA30_NR_DAM_IFC)) { @@ -572,6 +572,20 @@ static int __devinit tegra30_dam_probe(struct platform_device *pdev) goto err_clk_put_dam; } + /* cache the POR values of DAM regs*/ + tegra30_dam_enable_clock(pdev->id); + + for (i = 0; i <= TEGRA30_DAM_CTRL_REGINDEX; i++) { + if ((i == TEGRA30_DAM_CTRL_RSVD_6) || + (i == TEGRA30_DAM_CTRL_RSVD_10)) + continue; + + dam->reg_cache[i] = + tegra30_dam_readl(dam, i << 2); + } + + tegra30_dam_disable_clock(pdev->id); + platform_set_drvdata(pdev, dam); tegra30_dam_debug_add(dam, pdev->id); |