Re: [PATCH v8 06/18] drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()

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On Mon, May 29, 2023 at 03:52:25PM +0200, Konrad Dybcio wrote:
> 
> Unify the indentation and explain the cryptic 0xF value.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>

Reviewed-by: Akhil P Oommen <quic_akhilpo@xxxxxxxxxxx>

-Akhil

> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index 6bb4da70f6a6..e3ac3f045665 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -1597,17 +1597,18 @@ static void a6xx_llc_slices_init(struct platform_device *pdev,
>  		a6xx_gpu->llc_mmio = ERR_PTR(-EINVAL);
>  }
>  
> -#define GBIF_CLIENT_HALT_MASK             BIT(0)
> -#define GBIF_ARB_HALT_MASK                BIT(1)
> +#define GBIF_CLIENT_HALT_MASK		BIT(0)
> +#define GBIF_ARB_HALT_MASK		BIT(1)
> +#define VBIF_XIN_HALT_CTRL0_MASK	GENMASK(3, 0)
>  
>  void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu, bool gx_off)
>  {
>  	struct msm_gpu *gpu = &adreno_gpu->base;
>  
>  	if (!a6xx_has_gbif(adreno_gpu)) {
> -		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0xf);
> +		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, VBIF_XIN_HALT_CTRL0_MASK);
>  		spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) &
> -								0xf) == 0xf);
> +				(VBIF_XIN_HALT_CTRL0_MASK)) == VBIF_XIN_HALT_CTRL0_MASK);
>  		gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0);
>  
>  		return;
> 
> -- 
> 2.40.1
> 



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