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mfd: exynos-lpass: Add runtime PM support 

Convert exisitng lpass-suspend/resume callbacks into runtime PM callbacks.
This way Exynos LPASS driver will be ready for use with power domains
enabled. LPASS will be runtime resumed/suspended as a result of its child
devices runtime PM transitions.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Marek Szyprowski 2017-03-23 09:03:27 +01:00 committed by Lee Jones
parent c414df12bd
commit 90f447170c
1 changed files with 11 additions and 2 deletions
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13
drivers/mfd/exynos-lpass.c
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@ -22,6 +22,7 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/soc/samsung/exynos-regs-pmu.h>
#include <linux/types.h>
@ -133,6 +134,8 @@ static int exynos_lpass_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, lpass);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
exynos_lpass_enable(lpass);
return of_platform_populate(dev->of_node, NULL, NULL, dev);
@ -143,6 +146,9 @@ static int exynos_lpass_remove(struct platform_device *pdev)
struct exynos_lpass *lpass = platform_get_drvdata(pdev);
exynos_lpass_disable(lpass);
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
exynos_lpass_disable(lpass);
regmap_exit(lpass->top);
return 0;
@ -166,8 +172,11 @@ static int __maybe_unused exynos_lpass_resume(struct device *dev)
return 0;
}
static SIMPLE_DEV_PM_OPS(lpass_pm_ops, exynos_lpass_suspend,
exynos_lpass_resume);
static const struct dev_pm_ops lpass_pm_ops = {
SET_RUNTIME_PM_OPS(exynos_lpass_suspend, exynos_lpass_resume, NULL)
SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static const struct of_device_id exynos_lpass_of_match[] = {
{ .compatible = "samsung,exynos5433-lpass" },