Re: [PATCH 3/4] fbdev: Use _DMAMEM_ infix for DMA-memory helpers

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On 7/29/23 21:26, Thomas Zimmermann wrote:
Change the infix for fbdev's DMA-memory helpers from _DMA_ to
_DMAMEM_. The helpers perform operations within DMA-able memory,

Since "DMA" stands for "Direct Memory Access", people already
know that it operates on memory. I don't think we need
to add "MEM" here.
So, maybe we should drop this patch and just keep "DMA"?

Other than that you patch series looks good!
Acked-by: Helge Deller <deller@xxxxxx>

Helge


but they don't perform DMA operations. Naming should make this
clear. Adapt all users. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
  drivers/gpu/drm/Kconfig                   | 2 +-
  drivers/gpu/drm/drm_fbdev_dma.c           | 4 ++--
  drivers/gpu/drm/exynos/Kconfig            | 2 +-
  drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 4 ++--
  drivers/gpu/drm/omapdrm/Kconfig           | 2 +-
  drivers/gpu/drm/omapdrm/omap_fbdev.c      | 4 ++--
  drivers/gpu/drm/tegra/Kconfig             | 2 +-
  drivers/gpu/drm/tegra/fbdev.c             | 4 ++--
  drivers/video/fbdev/core/Kconfig          | 2 +-
  include/linux/fb.h                        | 4 ++--
  10 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 34da733e8606..b51c6a141dfa 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -224,7 +224,7 @@ config DRM_TTM_HELPER
  config DRM_GEM_DMA_HELPER
  	tristate
  	depends on DRM
-	select FB_DMA_HELPERS if DRM_FBDEV_EMULATION
+	select FB_DMAMEM_HELPERS if DRM_FBDEV_EMULATION
  	help
  	  Choose this if you need the GEM DMA helper functions

diff --git a/drivers/gpu/drm/drm_fbdev_dma.c b/drivers/gpu/drm/drm_fbdev_dma.c
index 6db168f94290..6c9427bb4053 100644
--- a/drivers/gpu/drm/drm_fbdev_dma.c
+++ b/drivers/gpu/drm/drm_fbdev_dma.c
@@ -62,9 +62,9 @@ static const struct fb_ops drm_fbdev_dma_fb_ops = {
  	.owner = THIS_MODULE,
  	.fb_open = drm_fbdev_dma_fb_open,
  	.fb_release = drm_fbdev_dma_fb_release,
-	__FB_DEFAULT_DMA_OPS_RDWR,
+	__FB_DEFAULT_DMAMEM_OPS_RDWR,
  	DRM_FB_HELPER_DEFAULT_OPS,
-	__FB_DEFAULT_DMA_OPS_DRAW,
+	__FB_DEFAULT_DMAMEM_OPS_DRAW,
  	.fb_mmap = drm_fbdev_dma_fb_mmap,
  	.fb_destroy = drm_fbdev_dma_fb_destroy,
  };
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index 661b42ad4873..733b109a5095 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -7,7 +7,7 @@ config DRM_EXYNOS
  	select DRM_DISPLAY_HELPER if DRM_EXYNOS_DP
  	select DRM_KMS_HELPER
  	select VIDEOMODE_HELPERS
-	select FB_DMA_HELPERS if DRM_FBDEV_EMULATION
+	select FB_DMAMEM_HELPERS if DRM_FBDEV_EMULATION
  	select SND_SOC_HDMI_CODEC if SND_SOC
  	help
  	  Choose this option if you have a Samsung SoC Exynos chipset.
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 4ccb385aff52..a379c8ca435a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -49,9 +49,9 @@ static void exynos_drm_fb_destroy(struct fb_info *info)

  static const struct fb_ops exynos_drm_fb_ops = {
  	.owner		= THIS_MODULE,
-	__FB_DEFAULT_DMA_OPS_RDWR,
+	__FB_DEFAULT_DMAMEM_OPS_RDWR,
  	DRM_FB_HELPER_DEFAULT_OPS,
-	__FB_DEFAULT_DMA_OPS_DRAW,
+	__FB_DEFAULT_DMAMEM_OPS_DRAW,
  	.fb_mmap        = exynos_drm_fb_mmap,
  	.fb_destroy	= exynos_drm_fb_destroy,
  };
diff --git a/drivers/gpu/drm/omapdrm/Kconfig b/drivers/gpu/drm/omapdrm/Kconfig
index d3c4877e465c..b715301ec79f 100644
--- a/drivers/gpu/drm/omapdrm/Kconfig
+++ b/drivers/gpu/drm/omapdrm/Kconfig
@@ -4,7 +4,7 @@ config DRM_OMAP
  	depends on DRM && OF
  	depends on ARCH_OMAP2PLUS
  	select DRM_KMS_HELPER
-	select FB_DMA_HELPERS if DRM_FBDEV_EMULATION
+	select FB_DMAMEM_HELPERS if DRM_FBDEV_EMULATION
  	select VIDEOMODE_HELPERS
  	select HDMI
  	default n
diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c
index 5b33c789e17a..6b08b137af1a 100644
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@@ -106,13 +106,13 @@ static void omap_fbdev_fb_destroy(struct fb_info *info)

  static const struct fb_ops omap_fb_ops = {
  	.owner = THIS_MODULE,
-	__FB_DEFAULT_DMA_OPS_RDWR,
+	__FB_DEFAULT_DMAMEM_OPS_RDWR,
  	.fb_check_var	= drm_fb_helper_check_var,
  	.fb_set_par	= drm_fb_helper_set_par,
  	.fb_setcmap	= drm_fb_helper_setcmap,
  	.fb_blank	= drm_fb_helper_blank,
  	.fb_pan_display = omap_fbdev_pan_display,
-	__FB_DEFAULT_DMA_OPS_DRAW,
+	__FB_DEFAULT_DMAMEM_OPS_DRAW,
  	.fb_ioctl	= drm_fb_helper_ioctl,
  	.fb_mmap	= omap_fbdev_fb_mmap,
  	.fb_destroy	= omap_fbdev_fb_destroy,
diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig
index 39452c8480c1..84e7e6bc3a0c 100644
--- a/drivers/gpu/drm/tegra/Kconfig
+++ b/drivers/gpu/drm/tegra/Kconfig
@@ -12,7 +12,7 @@ config DRM_TEGRA
  	select DRM_KMS_HELPER
  	select DRM_MIPI_DSI
  	select DRM_PANEL
-	select FB_DMA_HELPERS if DRM_FBDEV_EMULATION
+	select FB_DMAMEM_HELPERS if DRM_FBDEV_EMULATION
  	select TEGRA_HOST1X
  	select INTERCONNECT
  	select IOMMU_IOVA
diff --git a/drivers/gpu/drm/tegra/fbdev.c b/drivers/gpu/drm/tegra/fbdev.c
index 206a399c42d6..db6eaac3d30e 100644
--- a/drivers/gpu/drm/tegra/fbdev.c
+++ b/drivers/gpu/drm/tegra/fbdev.c
@@ -59,9 +59,9 @@ static void tegra_fbdev_fb_destroy(struct fb_info *info)

  static const struct fb_ops tegra_fb_ops = {
  	.owner = THIS_MODULE,
-	__FB_DEFAULT_DMA_OPS_RDWR,
+	__FB_DEFAULT_DMAMEM_OPS_RDWR,
  	DRM_FB_HELPER_DEFAULT_OPS,
-	__FB_DEFAULT_DMA_OPS_DRAW,
+	__FB_DEFAULT_DMAMEM_OPS_DRAW,
  	.fb_mmap = tegra_fb_mmap,
  	.fb_destroy = tegra_fbdev_fb_destroy,
  };
diff --git a/drivers/video/fbdev/core/Kconfig b/drivers/video/fbdev/core/Kconfig
index 28e771a46df6..baf7e852c75b 100644
--- a/drivers/video/fbdev/core/Kconfig
+++ b/drivers/video/fbdev/core/Kconfig
@@ -136,7 +136,7 @@ config FB_DEFERRED_IO
  	bool
  	depends on FB_CORE

-config FB_DMA_HELPERS
+config FB_DMAMEM_HELPERS
  	bool
  	depends on FB_CORE
  	select FB_SYS_COPYAREA
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 76472482dc30..d255263c2d1d 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -579,11 +579,11 @@ extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
   * Helpers for framebuffers in DMA-able memory
   */

-#define __FB_DEFAULT_DMA_OPS_RDWR \
+#define __FB_DEFAULT_DMAMEM_OPS_RDWR \
  	.fb_read	= fb_sys_read, \
  	.fb_write	= fb_sys_write

-#define __FB_DEFAULT_DMA_OPS_DRAW \
+#define __FB_DEFAULT_DMAMEM_OPS_DRAW \
  	.fb_fillrect	= sys_fillrect, \
  	.fb_copyarea	= sys_copyarea, \
  	.fb_imageblit	= sys_imageblit





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