From bcda6ff8ddffa593635ed7e6f620a1ef3b827ffc Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Thu, 16 Jun 2011 10:14:40 +0200 Subject: [PATCH] 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 Reviewed-by: Virupax Sadashivpetimath Reviewed-by: Jonas Aberg Reviewed-by: Srinidhi Kasagar [Rebased to Linux 3.0-rc3, edit description] Signed-off-by: Linus Walleij Signed-off-by: Grant Likely --- drivers/spi/spi-pl022.c | 6 ++++++ 1 file changed, 6 insertions(+) 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 #include #include +#include /* * 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: