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| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2011-06-16 12:14:40 +0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-06-16 18:27:00 +0400 |
| commit | bcda6ff8ddffa593635ed7e6f620a1ef3b827ffc (patch) | |
| tree | a9eb1eb5b76de898265a2b78fa7ebc6d2a742db0 /drivers/spi | |
| parent | 083be3f05371b8fe0606f3abf029beeeff66d633 (diff) | |
| download | linux-bcda6ff8ddffa593635ed7e6f620a1ef3b827ffc.tar.xz | |
spi/pl022: 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: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
[Rebased to Linux 3.0-rc3, edit description]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-pl022.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index f4b7b72b373e..5079ff14c9d4 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -40,6 +40,7 @@ #include <linux/dmaengine.h> #include <linux/dma-mapping.h> #include <linux/scatterlist.h> +#include <linux/pm_runtime.h> /* * This macro is used to define some register default values. @@ -517,6 +518,7 @@ static void giveback(struct pl022 *pl022) clk_disable(pl022->clk); amba_pclk_disable(pl022->adev); amba_vcore_disable(pl022->adev); + pm_runtime_put(&pl022->adev->dev); } /** @@ -1542,6 +1544,7 @@ static void pump_messages(struct work_struct *work) * and core will be disabled when giveback() is called in each method * (poll/interrupt/DMA) */ + pm_runtime_get_sync(&pl022->adev->dev); amba_vcore_enable(pl022->adev); amba_pclk_enable(pl022->adev); clk_enable(pl022->clk); @@ -2142,6 +2145,8 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id) } printk(KERN_INFO "pl022: mapped registers from 0x%08x to %p\n", adev->res.start, pl022->virtbase); + pm_runtime_enable(dev); + pm_runtime_resume(dev); pl022->clk = clk_get(&adev->dev, NULL); if (IS_ERR(pl022->clk)) { @@ -2203,6 +2208,7 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id) destroy_queue(pl022); pl022_dma_remove(pl022); free_irq(adev->irq[0], pl022); + pm_runtime_disable(&adev->dev); err_no_irq: clk_put(pl022->clk); err_no_clk: |