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mmc: dw_mmc-rockchip: add runtime PM support 

This patch adds runtime PM support for dw_mmc-rockchip.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin 2016-10-12 10:50:36 +08:00 committed by Ulf Hansson
parent e9ed8835e9
commit f90142683f
1 changed files with 38 additions and 3 deletions
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41
drivers/mmc/host/dw_mmc-rockchip.c
View File

@ -13,6 +13,7 @@
#include <linux/mmc/host.h> #include <linux/mmc/host.h>
#include <linux/mmc/dw_mmc.h> #include <linux/mmc/dw_mmc.h>
#include <linux/of_address.h> #include <linux/of_address.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h> #include <linux/slab.h>
#include "dw_mmc.h" #include "dw_mmc.h"
@ -325,6 +326,7 @@ static int dw_mci_rockchip_probe(struct platform_device *pdev)
{ {
const struct dw_mci_drv_data *drv_data; const struct dw_mci_drv_data *drv_data;
const struct of_device_id *match; const struct of_device_id *match;
int ret;
if (!pdev->dev.of_node) if (!pdev->dev.of_node)
return -ENODEV; return -ENODEV;
@ -332,16 +334,49 @@ static int dw_mci_rockchip_probe(struct platform_device *pdev)
match = of_match_node(dw_mci_rockchip_match, pdev->dev.of_node); match = of_match_node(dw_mci_rockchip_match, pdev->dev.of_node);
drv_data = match->data; drv_data = match->data;
return dw_mci_pltfm_register(pdev, drv_data); pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
pm_runtime_use_autosuspend(&pdev->dev);
ret = dw_mci_pltfm_register(pdev, drv_data);
if (ret) {
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
return ret;
}
pm_runtime_put_autosuspend(&pdev->dev);
return 0;
} }
static int dw_mci_rockchip_remove(struct platform_device *pdev)
{
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
return dw_mci_pltfm_remove(pdev);
}
static const struct dev_pm_ops dw_mci_rockchip_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
dw_mci_runtime_resume,
NULL)
};
static struct platform_driver dw_mci_rockchip_pltfm_driver = { static struct platform_driver dw_mci_rockchip_pltfm_driver = {
.probe = dw_mci_rockchip_probe, .probe = dw_mci_rockchip_probe,
.remove = dw_mci_pltfm_remove, .remove = dw_mci_rockchip_remove,
.driver = { .driver = {
.name = "dwmmc_rockchip", .name = "dwmmc_rockchip",
.of_match_table = dw_mci_rockchip_match, .of_match_table = dw_mci_rockchip_match,
.pm = &dw_mci_pltfm_pmops, .pm = &dw_mci_rockchip_dev_pm_ops,
}, },
}; };