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authorMagnus Damm <damm@igel.co.jp>2009-07-08 13:22:18 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2009-07-22 00:28:38 +0200
commit4a256b5fc028e6dad0fd1b59745f743ee528c944 (patch)
tree1c2c17ccb80051c16ee9e16ea74194bd69fac72f /drivers/dma
parent79ee031ff6fd23a1a2a4f783cfc3421885304ce3 (diff)
downloadop-kernel-dev-4a256b5fc028e6dad0fd1b59745f743ee528c944.zip
op-kernel-dev-4a256b5fc028e6dad0fd1b59745f743ee528c944.tar.gz
DMA: Rework dw_dmac suspend_late()/resume_early()
This patch reworks platform driver power management code for dw_dmac from legacy late/early callbacks to dev_pm_ops. The callbacks are converted for CONFIG_SUSPEND like this: suspend_late() -> suspend_noirq() resume_early() -> resume_noirq() Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dw_dmac.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 98c9a84..933c143 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1399,8 +1399,9 @@ static void dw_shutdown(struct platform_device *pdev)
clk_disable(dw->clk);
}
-static int dw_suspend_late(struct platform_device *pdev, pm_message_t mesg)
+static int dw_suspend_noirq(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct dw_dma *dw = platform_get_drvdata(pdev);
dw_dma_off(platform_get_drvdata(pdev));
@@ -1408,23 +1409,27 @@ static int dw_suspend_late(struct platform_device *pdev, pm_message_t mesg)
return 0;
}
-static int dw_resume_early(struct platform_device *pdev)
+static int dw_resume_noirq(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
struct dw_dma *dw = platform_get_drvdata(pdev);
clk_enable(dw->clk);
dma_writel(dw, CFG, DW_CFG_DMA_EN);
return 0;
-
}
+static struct dev_pm_ops dw_dev_pm_ops = {
+ .suspend_noirq = dw_suspend_noirq,
+ .resume_noirq = dw_resume_noirq,
+};
+
static struct platform_driver dw_driver = {
.remove = __exit_p(dw_remove),
.shutdown = dw_shutdown,
- .suspend_late = dw_suspend_late,
- .resume_early = dw_resume_early,
.driver = {
.name = "dw_dmac",
+ .pm = &dw_dev_pm_ops,
},
};
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