Commit 4a256b5f authored by Magnus Damm's avatar Magnus Damm Committed by Rafael J. Wysocki

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: default avatarMagnus Damm <damm@igel.co.jp>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 79ee031f
...@@ -1399,8 +1399,9 @@ static void dw_shutdown(struct platform_device *pdev) ...@@ -1399,8 +1399,9 @@ static void dw_shutdown(struct platform_device *pdev)
clk_disable(dw->clk); 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); struct dw_dma *dw = platform_get_drvdata(pdev);
dw_dma_off(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) ...@@ -1408,23 +1409,27 @@ static int dw_suspend_late(struct platform_device *pdev, pm_message_t mesg)
return 0; 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); struct dw_dma *dw = platform_get_drvdata(pdev);
clk_enable(dw->clk); clk_enable(dw->clk);
dma_writel(dw, CFG, DW_CFG_DMA_EN); dma_writel(dw, CFG, DW_CFG_DMA_EN);
return 0; 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 = { static struct platform_driver dw_driver = {
.remove = __exit_p(dw_remove), .remove = __exit_p(dw_remove),
.shutdown = dw_shutdown, .shutdown = dw_shutdown,
.suspend_late = dw_suspend_late,
.resume_early = dw_resume_early,
.driver = { .driver = {
.name = "dw_dmac", .name = "dw_dmac",
.pm = &dw_dev_pm_ops,
}, },
}; };
......
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