drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()

Unify the indentation and explain the cryptic 0xF value.

Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/542756/
Signed-off-by: Rob Clark <robdclark@chromium.org>

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index a48f4e3..d5bd008 100644 (file)
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1705,17 +1705,18 @@ 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;