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>
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 @@
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 @@
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,
},
};