linux-kernel - [PATCH 06/20] drm/msm/gpu: add dev_to

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Date:   Mon, 24 Aug 2020 11:37:40 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org, iommu@...ts.linux-foundation.org
Cc:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Will Deacon <will@...nel.org>, freedreno@...ts.freedesktop.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Rob Clark <robdclark@...omium.org>,
        Akhil P Oommen <akhilpo@...eaurora.org>,
        AngeloGioacchino Del Regno <kholk11@...il.com>,
        Ben Dooks <ben.dooks@...ethink.co.uk>,
        Brian Masney <masneyb@...tation.org>,
        Eric Anholt <eric@...olt.net>, Joerg Roedel <jroedel@...e.de>,
        John Stultz <john.stultz@...aro.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Shawn Guo <shawn.guo@...aro.org>,
        Sharat Masetty <smasetty@...eaurora.org>,
        linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 06/20] drm/msm/gpu: add dev_to_gpu() helper

From: Rob Clark <robdclark@...omium.org>

In a later patch, the drvdata will not directly be 'struct msm_gpu *',
so add a helper to reduce the churn.

Signed-off-by: Rob Clark <robdclark@...omium.org>
Reviewed-by: Jordan Crouse <jcrouse@...eaurora.org>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c | 10 ++++------
 drivers/gpu/drm/msm/msm_gpu.c              |  6 +++---
 drivers/gpu/drm/msm/msm_gpu.h              |  5 +++++
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 9eeb46bf2a5d..26664e1b30c0 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -282,7 +282,7 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
 	int ret;
 
 	if (pdev)
-		gpu = platform_get_drvdata(pdev);
+		gpu = dev_to_gpu(&pdev->dev);
 
 	if (!gpu) {
 		dev_err_once(dev->dev, "no GPU device was found\n");
@@ -425,7 +425,7 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
 static void adreno_unbind(struct device *dev, struct device *master,
 		void *data)
 {
-	struct msm_gpu *gpu = dev_get_drvdata(dev);
+	struct msm_gpu *gpu = dev_to_gpu(dev);
 
 	pm_runtime_force_suspend(dev);
 	gpu->funcs->destroy(gpu);
@@ -490,16 +490,14 @@ 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_to_gpu(dev);
 
 	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_to_gpu(dev);
 
 	return gpu->funcs->pm_suspend(gpu);
 }
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index d5645472b25d..6aa9e04e52e7 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -24,7 +24,7 @@
 static int msm_devfreq_target(struct device *dev, unsigned long *freq,
 		u32 flags)
 {
-	struct msm_gpu *gpu = platform_get_drvdata(to_platform_device(dev));
+	struct msm_gpu *gpu = dev_to_gpu(dev);
 	struct dev_pm_opp *opp;
 
 	opp = devfreq_recommended_opp(dev, freq, flags);
@@ -45,7 +45,7 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
 static int msm_devfreq_get_dev_status(struct device *dev,
 		struct devfreq_dev_status *status)
 {
-	struct msm_gpu *gpu = platform_get_drvdata(to_platform_device(dev));
+	struct msm_gpu *gpu = dev_to_gpu(dev);
 	ktime_t time;
 
 	if (gpu->funcs->gpu_get_freq)
@@ -64,7 +64,7 @@ static int msm_devfreq_get_dev_status(struct device *dev,
 
 static int msm_devfreq_get_cur_freq(struct device *dev, unsigned long *freq)
 {
-	struct msm_gpu *gpu = platform_get_drvdata(to_platform_device(dev));
+	struct msm_gpu *gpu = dev_to_gpu(dev);
 
 	if (gpu->funcs->gpu_get_freq)
 		*freq = gpu->funcs->gpu_get_freq(gpu);
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 0db117a7339b..8bda7beaed4b 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -141,6 +141,11 @@ struct msm_gpu {
 	struct msm_gpu_state *crashstate;
 };
 
+static inline struct msm_gpu *dev_to_gpu(struct device *dev)
+{
+	return dev_get_drvdata(dev);
+}
+
 /* It turns out that all targets use the same ringbuffer size */
 #define MSM_GPU_RINGBUFFER_SZ SZ_32K
 #define MSM_GPU_RINGBUFFER_BLKSIZE 32
-- 
2.26.2