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Signed-off-by: Frank Li --- drivers/staging/media/imx/imx6-csi2.c | 4 ++++ drivers/staging/media/imx/imx6-mipi-csi2.c | 11 ++++++++--- include/media/dw-mipi-csi2.h | 18 ++++++++++++++++++ 3 files changed, 30 insertions(+), 3 deletions(-) diff --git a/drivers/staging/media/imx/imx6-csi2.c b/drivers/staging/media/= imx/imx6-csi2.c index 696644aa04c83b1f2877b2b2315202627d927e96..e5192bcd886958a27f4255fca10= 55ae0a94866ef 100644 --- a/drivers/staging/media/imx/imx6-csi2.c +++ b/drivers/staging/media/imx/imx6-csi2.c @@ -154,6 +154,9 @@ static void csi2_remove(struct platform_device *pdev) dw_mipi_csi2_deinit(csi2); } =20 +static DEFINE_RUNTIME_DEV_PM_OPS(imx6_csi2_pm_ops, dw_mipi_csi2_runtime_su= spend, + dw_mipi_csi2_runtime_resume, NULL); + static const struct of_device_id csi2_dt_ids[] =3D { { .compatible =3D "fsl,imx6-mipi-csi2"}, { /* sentinel */ } @@ -164,6 +167,7 @@ static struct platform_driver csi2_driver =3D { .driver =3D { .name =3D "imx6-mipi-csi2", .of_match_table =3D csi2_dt_ids, + .pm =3D pm_ptr(&imx6_csi2_pm_ops), }, .probe =3D csi2_probe, .remove =3D csi2_remove, diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/m= edia/imx/imx6-mipi-csi2.c index 23656291d808ccdfc47f36d1f7f5104698812eba..0c8022ecdc18d42fa038c721e0c= 0953e8eb9cd6c 100644 --- a/drivers/staging/media/imx/imx6-mipi-csi2.c +++ b/drivers/staging/media/imx/imx6-mipi-csi2.c @@ -273,7 +273,7 @@ static int csi2_start(struct dw_mipi_csi2_dev *csi2) unsigned int lanes; int ret; =20 - ret =3D clk_bulk_prepare_enable(csi2->num_clks, csi2->clks); + ret =3D pm_runtime_resume_and_get(csi2->dev); if (ret) return ret; =20 @@ -323,7 +323,7 @@ static int csi2_start(struct dw_mipi_csi2_dev *csi2) err_assert_reset: csi2_enable(csi2, false); err_disable_clk: - clk_bulk_disable_unprepare(csi2->num_clks, csi2->clks); + pm_runtime_put(csi2->dev); return ret; } =20 @@ -334,7 +334,8 @@ static void csi2_stop(struct dw_mipi_csi2_dev *csi2) v4l2_subdev_call(csi2->src_sd, video, post_streamoff); =20 csi2_enable(csi2, false); - clk_bulk_disable_unprepare(csi2->num_clks, csi2->clks); + + pm_runtime_put(csi2->dev); } =20 /* @@ -634,6 +635,8 @@ int dw_mipi_csi2_init(struct platform_device *pdev, str= uct dw_mipi_csi2_dev *csi =20 csi2->tstif.write =3D dw_mipi_csi2_phy_write; =20 + platform_set_drvdata(pdev, csi2); + if (!config) return -EINVAL; =20 @@ -667,6 +670,8 @@ int dw_mipi_csi2_init(struct platform_device *pdev, str= uct dw_mipi_csi2_dev *csi if (csi2->num_clks < 0) return dev_err_probe(&pdev->dev, csi2->num_clks, "Failed to get clocks\n= "); =20 + devm_pm_runtime_enable(&pdev->dev); + return csi2_async_register(csi2); =20 } diff --git a/include/media/dw-mipi-csi2.h b/include/media/dw-mipi-csi2.h index 935c664440aae82d69f0253a551b91ec4ff2724e..3d70c1f4f38e7d663f9b043d890= 3ce57d630d1b1 100644 --- a/include/media/dw-mipi-csi2.h +++ b/include/media/dw-mipi-csi2.h @@ -3,6 +3,8 @@ #ifndef __DW_MIPI_CSI2_COMMON_ #define __DW_MIPI_CSI2_COMMON_ =20 +#include + #include #include #include @@ -86,5 +88,21 @@ int dw_mipi_csi2_init(struct platform_device *pdev, =20 void dw_mipi_csi2_deinit(struct dw_mipi_csi2_dev *csi2); =20 +static inline int dw_mipi_csi2_runtime_suspend(struct device *dev) +{ + struct dw_mipi_csi2_dev *csi2 =3D dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(csi2->num_clks, csi2->clks); + + return 0; +} + +static inline int dw_mipi_csi2_runtime_resume(struct device *dev) +{ + struct dw_mipi_csi2_dev *csi2 =3D dev_get_drvdata(dev); + + return clk_bulk_prepare_enable(csi2->num_clks, csi2->clks); +} + #endif =20 --=20 2.34.1