Re: [PATCH 1/2] drm/msm: simplify getting .driver_data

From: Kieran Bingham
Date: Fri Mar 22 2019 - 04:19:31 EST

Hi Wolfram,

Thank you for the patch,

On 19/03/2019 16:36, Wolfram Sang wrote:
> We should get 'driver_data' from 'struct device' directly. Going via
> platform_device is an unneeded step back and forth.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

This looks good to me.

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>

> ---
>
> Build tested only. buildbot is happy.
>
> drivers/gpu/drm/msm/adreno/adreno_device.c | 6 ++----
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 13 +++++--------
> drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 6 ++----
> drivers/gpu/drm/msm/dsi/dsi_host.c | 6 ++----
> drivers/gpu/drm/msm/msm_drv.c | 3 +--
> 5 files changed, 12 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> index 714ed6505e47..13802af8294c 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> @@ -412,16 +412,14 @@ static const struct of_device_id dt_match[] = {
> #ifdef CONFIG_PM
> static int adreno_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_gpu *gpu = platform_get_drvdata(pdev);
> + struct msm_gpu *gpu = dev_get_drvdata(dev);

Nice simplification :-)

Do you catch these with Coccinelle?

>
> return gpu->funcs->pm_resume(gpu);
> }
>
> static int adreno_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_gpu *gpu = platform_get_drvdata(pdev);
> + struct msm_gpu *gpu = dev_get_drvdata(dev);
>
> return gpu->funcs->pm_suspend(gpu);
> }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index 885bf88afa3e..0154eb9b343f 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -1036,16 +1036,15 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
>
> static void dpu_unbind(struct device *dev, struct device *master, void *data)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
> + struct dpu_kms *dpu_kms = dev_get_drvdata(dev);
> struct dss_module_power *mp = &dpu_kms->mp;
>
> msm_dss_put_clk(mp->clk_config, mp->num_clk);
> - devm_kfree(&pdev->dev, mp->clk_config);
> + devm_kfree(dev, mp->clk_config);


Using the dev to get the pdev to get the dev :-D

> mp->num_clk = 0;
>
> if (dpu_kms->rpm_enabled)
> - pm_runtime_disable(&pdev->dev);
> + pm_runtime_disable(dev);
> }
>
> static const struct component_ops dpu_ops = {
> @@ -1067,8 +1066,7 @@ static int dpu_dev_remove(struct platform_device *pdev)
> static int __maybe_unused dpu_runtime_suspend(struct device *dev)
> {
> int rc = -1;
> - struct platform_device *pdev = to_platform_device(dev);
> - struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
> + struct dpu_kms *dpu_kms = dev_get_drvdata(dev);
> struct drm_device *ddev;
> struct dss_module_power *mp = &dpu_kms->mp;
>
> @@ -1088,8 +1086,7 @@ static int __maybe_unused dpu_runtime_suspend(struct device *dev)
> static int __maybe_unused dpu_runtime_resume(struct device *dev)
> {
> int rc = -1;
> - struct platform_device *pdev = to_platform_device(dev);
> - struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
> + struct dpu_kms *dpu_kms = dev_get_drvdata(dev);
> struct drm_encoder *encoder;
> struct drm_device *ddev;
> struct dss_module_power *mp = &dpu_kms->mp;
> diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
> index 97179bec8902..8f7a01d7a663 100644
> --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
> +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
> @@ -1063,8 +1063,7 @@ static int mdp5_dev_remove(struct platform_device *pdev)
>
> static __maybe_unused int mdp5_runtime_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev);
> + struct mdp5_kms *mdp5_kms = dev_get_drvdata(dev);
>
> DBG("");
>
> @@ -1073,8 +1072,7 @@ static __maybe_unused int mdp5_runtime_suspend(struct device *dev)
>
> static __maybe_unused int mdp5_runtime_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev);
> + struct mdp5_kms *mdp5_kms = dev_get_drvdata(dev);
>
> DBG("");
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index 610183db1daf..4a158c41ef30 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -485,8 +485,7 @@ static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host)
>
> int msm_dsi_runtime_suspend(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
> + struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
> struct mipi_dsi_host *host = msm_dsi->host;
> struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
>
> @@ -500,8 +499,7 @@ int msm_dsi_runtime_suspend(struct device *dev)
>
> int msm_dsi_runtime_resume(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
> + struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
> struct mipi_dsi_host *host = msm_dsi->host;
> struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
>
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index 0bdd93648761..071ad87ce44e 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -251,8 +251,7 @@ static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
>
> static int msm_drm_uninit(struct device *dev)
> {
> - struct platform_device *pdev = to_platform_device(dev);
> - struct drm_device *ddev = platform_get_drvdata(pdev);
> + struct drm_device *ddev = dev_get_drvdata(dev);
> struct msm_drm_private *priv = ddev->dev_private;
> struct msm_kms *kms = priv->kms;
> struct msm_mdss *mdss = priv->mdss;
>