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| author | Viresh Kumar <viresh.kumar@st.com> | 2011-08-05 15:32:33 +0530 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-08-25 19:33:38 +0530 |
| commit | b7b6018bad6fd7ebe5a78bda5f2a71a6ecf5406a (patch) | |
| tree | 652c64fd26877df5f5257540aa257e0f64459b23 /drivers/dma/amba-pl08x.c | |
| parent | 175a5e617cd820d9e22d9e4f6d3ef736b2f874b1 (diff) | |
| download | linux-b7b6018bad6fd7ebe5a78bda5f2a71a6ecf5406a.tar.bz2 | |
dmaengine/amba-pl08x: support runtime PM
Insert notifiers for the runtime PM API. With this the runtime PM layer kicks in
to action where used.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index ead88c9a5e93..5dd97f450925 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -84,6 +84,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/pm_runtime.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <asm/hardware/pl080.h> @@ -405,6 +406,7 @@ pl08x_get_phy_channel(struct pl08x_driver_data *pl08x, return NULL; } + pm_runtime_get_sync(&pl08x->adev->dev); return ch; } @@ -418,6 +420,8 @@ static inline void pl08x_put_phy_channel(struct pl08x_driver_data *pl08x, /* Stop the channel and clear its interrupts */ pl08x_terminate_phy_chan(pl08x, ch); + pm_runtime_put(&pl08x->adev->dev); + /* Mark it as free */ ch->serving = NULL; spin_unlock_irqrestore(&ch->lock, flags); @@ -1855,6 +1859,9 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) goto out_no_pl08x; } + pm_runtime_set_active(&adev->dev); + pm_runtime_enable(&adev->dev); + /* Initialize memcpy engine */ dma_cap_set(DMA_MEMCPY, pl08x->memcpy.cap_mask); pl08x->memcpy.dev = &adev->dev; @@ -1992,6 +1999,8 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) dev_info(&pl08x->adev->dev, "DMA: PL%03x rev%u at 0x%08llx irq %d\n", amba_part(adev), amba_rev(adev), (unsigned long long)adev->res.start, adev->irq[0]); + + pm_runtime_put(&adev->dev); return 0; out_no_slave_reg: @@ -2010,6 +2019,9 @@ out_no_ioremap: dma_pool_destroy(pl08x->pool); out_no_lli_pool: out_no_platdata: + pm_runtime_put(&adev->dev); + pm_runtime_disable(&adev->dev); + kfree(pl08x); out_no_pl08x: amba_release_regions(adev); |