| Message ID | 20230512084152.31233-5-tzimmermann@suse.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/fbdev: Remove DRM's helpers for fbdev I/O | expand |
[Public] > -----Original Message----- > From: Thomas Zimmermann <tzimmermann@suse.de> > Sent: Friday, May 12, 2023 4:42 AM > To: daniel@ffwll.ch; airlied@gmail.com; maarten.lankhorst@linux.intel.com; > mripard@kernel.org; javierm@redhat.com > Cc: dri-devel@lists.freedesktop.org; linux-arm-kernel@lists.infradead.org; > linux-samsung-soc@vger.kernel.org; intel-gfx@lists.freedesktop.org; linux- > arm-msm@vger.kernel.org; freedreno@lists.freedesktop.org; amd- > gfx@lists.freedesktop.org; linux-tegra@vger.kernel.org; Thomas > Zimmermann <tzimmermann@suse.de>; Deucher, Alexander > <Alexander.Deucher@amd.com>; Koenig, Christian > <Christian.Koenig@amd.com>; Pan, Xinhui <Xinhui.Pan@amd.com> > Subject: [PATCH 04/11] drm/radeon: Use regular fbdev I/O helpers > > Use the regular fbdev helpers for framebuffer I/O instead of DRM's helpers. > Radeon does not use damage handling, so DRM's fbdev helpers are mere > wrappers around the fbdev code. > > Add CONFIG_DRM_RADEON_FBDEV_EMULATION to select the necessary > Kconfig options automatically. Make fbdev emulation depend on the new > config option. > > By using fbdev helpers directly within each DRM fbdev emulation, we can > eventually remove DRM's wrapper functions entirely. > > Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> > Cc: Alex Deucher <alexander.deucher@amd.com> > Cc: "Christian König" <christian.koenig@amd.com> > Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> Feel free to take this through whatever tree makes sense. Acked-by: Alex Deucher <alexander.deucher@amd.com> > --- > drivers/gpu/drm/radeon/Kconfig | 8 ++++++++ > drivers/gpu/drm/radeon/Makefile | 2 +- > drivers/gpu/drm/radeon/radeon_fbdev.c | 9 ++++----- > drivers/gpu/drm/radeon/radeon_mode.h | 2 +- > 4 files changed, 14 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/radeon/Kconfig > b/drivers/gpu/drm/radeon/Kconfig index e19d77d58810..66b741d96cc4 > 100644 > --- a/drivers/gpu/drm/radeon/Kconfig > +++ b/drivers/gpu/drm/radeon/Kconfig > @@ -8,6 +8,7 @@ config DRM_RADEON > select DRM_DISPLAY_DP_HELPER > select DRM_DISPLAY_HELPER > select DRM_KMS_HELPER > + select DRM_RADEON_FBDEV_EMULATION if > DRM_FBDEV_EMULATION > select DRM_SUBALLOC_HELPER > select DRM_TTM > select DRM_TTM_HELPER > @@ -39,3 +40,10 @@ config DRM_RADEON_USERPTR > help > This option selects CONFIG_MMU_NOTIFIER if it isn't already > selected to enabled full userptr support. > + > +config DRM_RADEON_FBDEV_EMULATION > + bool > + depends on DRM_RADEON > + select FB_CFB_COPYAREA > + select FB_CFB_FILLRECT > + select FB_CFB_IMAGEBLIT > diff --git a/drivers/gpu/drm/radeon/Makefile > b/drivers/gpu/drm/radeon/Makefile index a8734b7d0485..46c1446196a9 > 100644 > --- a/drivers/gpu/drm/radeon/Makefile > +++ b/drivers/gpu/drm/radeon/Makefile > @@ -76,7 +76,7 @@ radeon-y += \ > vce_v1_0.o \ > vce_v2_0.o > > -radeon-$(CONFIG_DRM_FBDEV_EMULATION) += radeon_fbdev.o > +radeon-$(CONFIG_DRM_RADEON_FBDEV_EMULATION) += > radeon_fbdev.o > radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o > radeon-$(CONFIG_ACPI) += radeon_acpi.o > > diff --git a/drivers/gpu/drm/radeon/radeon_fbdev.c > b/drivers/gpu/drm/radeon/radeon_fbdev.c > index fe76e29910ef..dcabe527f9c0 100644 > --- a/drivers/gpu/drm/radeon/radeon_fbdev.c > +++ b/drivers/gpu/drm/radeon/radeon_fbdev.c > @@ -24,6 +24,7 @@ > * David Airlie > */ > > +#include <linux/fb.h> > #include <linux/pci.h> > #include <linux/pm_runtime.h> > #include <linux/vga_switcheroo.h> > @@ -193,11 +194,9 @@ static const struct fb_ops radeon_fbdev_fb_ops = { > DRM_FB_HELPER_DEFAULT_OPS, > .fb_open = radeon_fbdev_fb_open, > .fb_release = radeon_fbdev_fb_release, > - .fb_read = drm_fb_helper_cfb_read, > - .fb_write = drm_fb_helper_cfb_write, > - .fb_fillrect = drm_fb_helper_cfb_fillrect, > - .fb_copyarea = drm_fb_helper_cfb_copyarea, > - .fb_imageblit = drm_fb_helper_cfb_imageblit, > + .fb_fillrect = cfb_fillrect, > + .fb_copyarea = cfb_copyarea, > + .fb_imageblit = cfb_imageblit, > .fb_destroy = radeon_fbdev_fb_destroy, }; > > diff --git a/drivers/gpu/drm/radeon/radeon_mode.h > b/drivers/gpu/drm/radeon/radeon_mode.h > index 1decdcec0264..c5a8e25a4c97 100644 > --- a/drivers/gpu/drm/radeon/radeon_mode.h > +++ b/drivers/gpu/drm/radeon/radeon_mode.h > @@ -939,7 +939,7 @@ void dce4_program_fmt(struct drm_encoder > *encoder); void dce8_program_fmt(struct drm_encoder *encoder); > > /* fbdev layer */ > -#if defined(CONFIG_DRM_FBDEV_EMULATION) > +#if defined(CONFIG_DRM_RADEON_FBDEV_EMULATION) > void radeon_fbdev_setup(struct radeon_device *rdev); void > radeon_fbdev_set_suspend(struct radeon_device *rdev, int state); bool > radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo > *robj); > -- > 2.40.1
diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig index e19d77d58810..66b741d96cc4 100644 --- a/drivers/gpu/drm/radeon/Kconfig +++ b/drivers/gpu/drm/radeon/Kconfig @@ -8,6 +8,7 @@ config DRM_RADEON select DRM_DISPLAY_DP_HELPER select DRM_DISPLAY_HELPER select DRM_KMS_HELPER + select DRM_RADEON_FBDEV_EMULATION if DRM_FBDEV_EMULATION select DRM_SUBALLOC_HELPER select DRM_TTM select DRM_TTM_HELPER @@ -39,3 +40,10 @@ config DRM_RADEON_USERPTR help This option selects CONFIG_MMU_NOTIFIER if it isn't already selected to enabled full userptr support. + +config DRM_RADEON_FBDEV_EMULATION + bool + depends on DRM_RADEON + select FB_CFB_COPYAREA + select FB_CFB_FILLRECT + select FB_CFB_IMAGEBLIT diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile index a8734b7d0485..46c1446196a9 100644 --- a/drivers/gpu/drm/radeon/Makefile +++ b/drivers/gpu/drm/radeon/Makefile @@ -76,7 +76,7 @@ radeon-y += \ vce_v1_0.o \ vce_v2_0.o -radeon-$(CONFIG_DRM_FBDEV_EMULATION) += radeon_fbdev.o +radeon-$(CONFIG_DRM_RADEON_FBDEV_EMULATION) += radeon_fbdev.o radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o radeon-$(CONFIG_ACPI) += radeon_acpi.o diff --git a/drivers/gpu/drm/radeon/radeon_fbdev.c b/drivers/gpu/drm/radeon/radeon_fbdev.c index fe76e29910ef..dcabe527f9c0 100644 --- a/drivers/gpu/drm/radeon/radeon_fbdev.c +++ b/drivers/gpu/drm/radeon/radeon_fbdev.c @@ -24,6 +24,7 @@ * David Airlie */ +#include <linux/fb.h> #include <linux/pci.h> #include <linux/pm_runtime.h> #include <linux/vga_switcheroo.h> @@ -193,11 +194,9 @@ static const struct fb_ops radeon_fbdev_fb_ops = { DRM_FB_HELPER_DEFAULT_OPS, .fb_open = radeon_fbdev_fb_open, .fb_release = radeon_fbdev_fb_release, - .fb_read = drm_fb_helper_cfb_read, - .fb_write = drm_fb_helper_cfb_write, - .fb_fillrect = drm_fb_helper_cfb_fillrect, - .fb_copyarea = drm_fb_helper_cfb_copyarea, - .fb_imageblit = drm_fb_helper_cfb_imageblit, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, .fb_destroy = radeon_fbdev_fb_destroy, }; diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index 1decdcec0264..c5a8e25a4c97 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -939,7 +939,7 @@ void dce4_program_fmt(struct drm_encoder *encoder); void dce8_program_fmt(struct drm_encoder *encoder); /* fbdev layer */ -#if defined(CONFIG_DRM_FBDEV_EMULATION) +#if defined(CONFIG_DRM_RADEON_FBDEV_EMULATION) void radeon_fbdev_setup(struct radeon_device *rdev); void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state); bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj);
Use the regular fbdev helpers for framebuffer I/O instead of DRM's helpers. Radeon does not use damage handling, so DRM's fbdev helpers are mere wrappers around the fbdev code. Add CONFIG_DRM_RADEON_FBDEV_EMULATION to select the necessary Kconfig options automatically. Make fbdev emulation depend on the new config option. By using fbdev helpers directly within each DRM fbdev emulation, we can eventually remove DRM's wrapper functions entirely. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> --- drivers/gpu/drm/radeon/Kconfig | 8 ++++++++ drivers/gpu/drm/radeon/Makefile | 2 +- drivers/gpu/drm/radeon/radeon_fbdev.c | 9 ++++----- drivers/gpu/drm/radeon/radeon_mode.h | 2 +- 4 files changed, 14 insertions(+), 7 deletions(-)