Re: [PATCH 3/3] drm/msm/dp: Clean up pdev/dev duplication in dp_power

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On 15/05/2023 06:02, Bjorn Andersson wrote:
The dp_power module keeps track of both the DP controller's struct
platform_device and struct device - with the prior pulled out of the
dp_parser module.

Clean up the duplication by dropping the platform_device reference and
just track the passed struct device.

Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/dp/dp_power.c | 16 +++++++---------
  1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_power.c b/drivers/gpu/drm/msm/dp/dp_power.c
index 031d2eefef07..9be645f91211 100644
--- a/drivers/gpu/drm/msm/dp/dp_power.c
+++ b/drivers/gpu/drm/msm/dp/dp_power.c
@@ -14,7 +14,6 @@
struct dp_power_private {
  	struct dp_parser *parser;
-	struct platform_device *pdev;
  	struct device *dev;
  	struct drm_device *drm_dev;
  	struct clk *link_clk_src;
@@ -28,7 +27,7 @@ static int dp_power_clk_init(struct dp_power_private *power)
  {
  	int rc = 0;
  	struct dss_module_power *core, *ctrl, *stream;
-	struct device *dev = &power->pdev->dev;
+	struct device *dev = power->dev;
core = &power->parser->mp[DP_CORE_PM];
  	ctrl = &power->parser->mp[DP_CTRL_PM];
@@ -153,7 +152,7 @@ int dp_power_client_init(struct dp_power *dp_power)
power = container_of(dp_power, struct dp_power_private, dp_power); - pm_runtime_enable(&power->pdev->dev);
+	pm_runtime_enable(power->dev);
return dp_power_clk_init(power);
  }
@@ -164,7 +163,7 @@ void dp_power_client_deinit(struct dp_power *dp_power)
power = container_of(dp_power, struct dp_power_private, dp_power); - pm_runtime_disable(&power->pdev->dev);
+	pm_runtime_disable(power->dev);
  }
int dp_power_init(struct dp_power *dp_power, bool flip)
@@ -174,11 +173,11 @@ int dp_power_init(struct dp_power *dp_power, bool flip)
power = container_of(dp_power, struct dp_power_private, dp_power); - pm_runtime_get_sync(&power->pdev->dev);
+	pm_runtime_get_sync(power->dev);
rc = dp_power_clk_enable(dp_power, DP_CORE_PM, true);
  	if (rc)
-		pm_runtime_put_sync(&power->pdev->dev);
+		pm_runtime_put_sync(power->dev);
return rc;
  }
@@ -190,7 +189,7 @@ int dp_power_deinit(struct dp_power *dp_power)
  	power = container_of(dp_power, struct dp_power_private, dp_power);
dp_power_clk_enable(dp_power, DP_CORE_PM, false);
-	pm_runtime_put_sync(&power->pdev->dev);
+	pm_runtime_put_sync(power->dev);
  	return 0;
  }
@@ -199,12 +198,11 @@ struct dp_power *dp_power_get(struct device *dev, struct dp_parser *parser)

Technically we don't even need to pass struct device here, we can get it from parser->pdev->dev.

  	struct dp_power_private *power;
  	struct dp_power *dp_power;
- power = devm_kzalloc(&parser->pdev->dev, sizeof(*power), GFP_KERNEL);
+	power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL);
  	if (!power)
  		return ERR_PTR(-ENOMEM);
power->parser = parser;
-	power->pdev = parser->pdev;
  	power->dev = dev;
dp_power = &power->dp_power;

--
With best wishes
Dmitry




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