[PATCHv3 6/7] drm/msm: rearrange the gpu_rmw() function
From: Sai Prakash Ranjan <hidden>
Date: 2020-06-29 18:46:16
Also in:
dri-devel, linux-arm-msm, linux-iommu, lkml
Subsystem:
drm driver for qualcomm adreno gpus, drm driver for qualcomm display hardware, drm drivers, the rest · Maintainers:
Rob Clark, Dmitry Baryshkov, David Airlie, Simona Vetter, Linus Torvalds
From: Sharat Masetty <redacted> The register read-modify-write construct is generic enough that it can be used by other subsystems as needed, create a more generic rmw() function and have the gpu_rmw() use this new function. Signed-off-by: Sharat Masetty <redacted> Reviewed-by: Jordan Crouse <redacted> Signed-off-by: Sai Prakash Ranjan <redacted> --- drivers/gpu/drm/msm/msm_drv.c | 8 ++++++++ drivers/gpu/drm/msm/msm_drv.h | 1 + drivers/gpu/drm/msm/msm_gpu.h | 5 +---- 3 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 0c219b954943..5aa070929220 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c@@ -166,6 +166,14 @@ u32 msm_readl(const void __iomem *addr) return val; } +void msm_rmw(void __iomem *addr, u32 mask, u32 or) +{ + u32 val = msm_readl(addr); + + val &= ~mask; + msm_writel(val | or, addr); +} + struct msm_vblank_work { struct work_struct work; int crtc_id;
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 983a8b7e5a74..5bb02ccb863a 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h@@ -417,6 +417,7 @@ void __iomem *msm_ioremap(struct platform_device *pdev, const char *name, const char *dbgname); void msm_writel(u32 data, void __iomem *addr); u32 msm_readl(const void __iomem *addr); +void msm_rmw(void __iomem *addr, u32 mask, u32 or); struct msm_gpu_submitqueue; int msm_submitqueue_init(struct drm_device *drm, struct msm_file_private *ctx);
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index f1762b77bea8..3519777c8cb2 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h@@ -232,10 +232,7 @@ static inline u32 gpu_read(struct msm_gpu *gpu, u32 reg) static inline void gpu_rmw(struct msm_gpu *gpu, u32 reg, u32 mask, u32 or) { - uint32_t val = gpu_read(gpu, reg); - - val &= ~mask; - gpu_write(gpu, reg, val | or); + msm_rmw(gpu->mmio + (reg << 2), mask, or); } static inline u64 gpu_read64(struct msm_gpu *gpu, u32 lo, u32 hi)
--
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