linux-kernel - Re: [PATCH 07/19] drm/msm: set adreno

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Message-ID: <20200901045827.GP3715@yoga>
Date:   Mon, 31 Aug 2020 23:58:27 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     dri-devel@...ts.freedesktop.org, iommu@...ts.linux-foundation.org,
        linux-arm-msm@...r.kernel.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Will Deacon <will@...nel.org>, freedreno@...ts.freedesktop.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>,
        linux-arm-kernel@...ts.infradead.org,
        Rob Clark <robdclark@...omium.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Shawn Guo <shawn.guo@...aro.org>,
        Sharat Masetty <smasetty@...eaurora.org>,
        AngeloGioacchino Del Regno <kholk11@...il.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/19] drm/msm: set adreno_smmu as gpu's drvdata

On Thu 13 Aug 21:41 CDT 2020, Rob Clark wrote:

> From: Rob Clark <robdclark@...omium.org>
> 
> This will be populated by adreno-smmu, to provide a way for coordinating
> enabling/disabling TTBR0 translation.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> Signed-off-by: Rob Clark <robdclark@...omium.org>
> ---
>  drivers/gpu/drm/msm/adreno/adreno_device.c | 2 --
>  drivers/gpu/drm/msm/msm_gpu.c              | 2 +-
>  drivers/gpu/drm/msm/msm_gpu.h              | 6 +++++-
>  3 files changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> index 26664e1b30c0..58e03b20e1c7 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> @@ -417,8 +417,6 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
>  		return PTR_ERR(gpu);
>  	}
>  
> -	dev_set_drvdata(dev, gpu);
> -
>  	return 0;
>  }
>  
> diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
> index 6aa9e04e52e7..806eb0957280 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.c
> +++ b/drivers/gpu/drm/msm/msm_gpu.c
> @@ -892,7 +892,7 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
>  		gpu->gpu_cx = NULL;
>  
>  	gpu->pdev = pdev;
> -	platform_set_drvdata(pdev, gpu);
> +	platform_set_drvdata(pdev, &gpu->adreno_smmu);
>  
>  	msm_devfreq_init(gpu);
>  
> diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
> index 8bda7beaed4b..f91b141add75 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.h
> +++ b/drivers/gpu/drm/msm/msm_gpu.h
> @@ -7,6 +7,7 @@
>  #ifndef __MSM_GPU_H__
>  #define __MSM_GPU_H__
>  
> +#include <linux/adreno-smmu-priv.h>
>  #include <linux/clk.h>
>  #include <linux/interconnect.h>
>  #include <linux/pm_opp.h>
> @@ -73,6 +74,8 @@ struct msm_gpu {
>  	struct platform_device *pdev;
>  	const struct msm_gpu_funcs *funcs;
>  
> +	struct adreno_smmu_priv adreno_smmu;
> +
>  	/* performance counters (hw & sw): */
>  	spinlock_t perf_lock;
>  	bool perfcntr_active;
> @@ -143,7 +146,8 @@ struct msm_gpu {
>  
>  static inline struct msm_gpu *dev_to_gpu(struct device *dev)
>  {
> -	return dev_get_drvdata(dev);
> +	struct adreno_smmu_priv *adreno_smmu = dev_get_drvdata(dev);
> +	return container_of(adreno_smmu, struct msm_gpu, adreno_smmu);
>  }
>  
>  /* It turns out that all targets use the same ringbuffer size */
> -- 
> 2.26.2
>