diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-03-06 13:31:12 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-03-06 20:08:06 -0800 |
| commit | d5824b800ac2273f684ca814462f9055cd86d2fd (patch) | |
| tree | 57103edbab13cc9a32d8cc3b48ef74d102e151ef | |
| parent | 79da479557b705fdf064bf5d9b06dff71035e51e (diff) | |
ARM: tegra: dma: Implement clock gating on suspend/resume
Disabling clock of apb dma in suspend and enabling back on
resume.
Change-Id: I6320072ea25565bcab4833c9b10dcb6a9d526ac6
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/87991
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
| -rw-r--r-- | arch/arm/mach-tegra/dma.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c index 7873dc5a3479..c5f32e69316f 100644 --- a/arch/arm/mach-tegra/dma.c +++ b/arch/arm/mach-tegra/dma.c @@ -1066,6 +1066,8 @@ static int tegra_dma_suspend(void) *ctx++ = readl(addr + APB_DMA_CHAN_APB_SEQ); } + /* Disabling clock of dma. */ + clk_disable(dma_clk); return 0; } @@ -1074,6 +1076,9 @@ static void tegra_dma_resume(void) u32 *ctx = apb_dma; int i; + /* Enabling clock of dma. */ + clk_enable(dma_clk); + writel(*ctx++, general_dma_addr + APB_DMA_GEN); writel(*ctx++, general_dma_addr + APB_DMA_CNTRL); writel(*ctx++, general_dma_addr + APB_DMA_IRQ_MASK); |