at_hdmac: Rework suspend_late()/resume_early()

This patch reworks platform driver power management code
for at_hdmac 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: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 12 insertions, 7 deletions

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 9a1e5fb412ed..c8522e6f1ad2 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1166,32 +1166,37 @@ static void at_dma_shutdown(struct platform_device *pdev)
         clk_disable(atdma->clk);
 }
 
-static int at_dma_suspend_late(struct platform_device *pdev, pm_message_t mesg)
+static int at_dma_suspend_noirq(struct device *dev)
 {
-        struct at_dma   *atdma = platform_get_drvdata(pdev);
+        struct platform_device *pdev = to_platform_device(dev);
+        struct at_dma *atdma = platform_get_drvdata(pdev);
 
         at_dma_off(platform_get_drvdata(pdev));
         clk_disable(atdma->clk);
         return 0;
 }
 
-static int at_dma_resume_early(struct platform_device *pdev)
+static int at_dma_resume_noirq(struct device *dev)
 {
-        struct at_dma   *atdma = platform_get_drvdata(pdev);
+        struct platform_device *pdev = to_platform_device(dev);
+        struct at_dma *atdma = platform_get_drvdata(pdev);
 
         clk_enable(atdma->clk);
         dma_writel(atdma, EN, AT_DMA_ENABLE);
         return 0;
-
 }
 
+static struct dev_pm_ops at_dma_dev_pm_ops = {
+        .suspend_noirq = at_dma_suspend_noirq,
+        .resume_noirq = at_dma_resume_noirq,
+};
+
 static struct platform_driver at_dma_driver = {
         .remove         = __exit_p(at_dma_remove),
         .shutdown       = at_dma_shutdown,
-        .suspend_late   = at_dma_suspend_late,
-        .resume_early   = at_dma_resume_early,
         .driver = {
                 .name   = "at_hdmac",
+                .pm     = &at_dma_dev_pm_ops,
         },
 };