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

From: Dmitry Baryshkov
Date: Sat Jun 03 2023 - 21:47:16 EST


On 21/05/2023 06:53, Bjorn Andersson wrote:
On Sat, May 20, 2023 at 04:26:59AM +0300, Dmitry Baryshkov wrote:
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.


Right, but afaict dp_init_sub_modules() passes struct device * as first
parameter to all the "module" initializers. So it feels reasonable to
keep it, for now, for symmetry.

What do you think?

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

--
With best wishes
Dmitry