[PATCH 00/21] drm/fb-helper: Untangle fbdev emulation and helpers

[PATCH 00/21] drm/fb-helper: Untangle fbdev emulation and helpers

[Thomas Zimmermann]

Separate generic fbdev emulation from the helper code that is shared
among the various fbdev implementations within DRM. Affects many drivers.

The goal of this patchset is to improve readability and streamline the
fbdev helper code within DRM. In the long term, we want to get to a point
where drivers or memory managers can pick and combine the various helpers
for optimal fbdev support.

Patches 1 to 8 start by preparing drivers. Setting lastclose is not
required by generic fbdev emulation.

Two drivers depend on fb helpers implicitly including other Linux header
files. Fixing this in patches 9 and 10 allows to remove unnecesary include
statements from the fb-helper header in patch 11.

Do some renaming in patches 12 to 14.

There are currently various implementation of the fbdev I/O helpers
with varying feature sets. The fb helpers for fbdev I/O should all call
fb_sync, which is what fbdev's internal implementation does. For DRM,
damage handling needs to be performed after updating a framebuffer. The
damage worker is part of the fb helpers, but the actual update logic only
works with generic fbdev emulation. Separate the two, which also gives
other drivers an option so set their own damage handling if neccessary.
The full-featured I/O helpers can be moved under a shared implementation
and called by all drivers. Patches 15 to 18 resolve these issues.

Patch 19 changes fbdev disablement to work at the level of display
detection. If disabled, generic fbdev emulation will be initialized,
but no display will be detected. It can later be enabled by changing
the parameter in sysfs and plugging in a connector.

Patches 20 and 21 move the generic fbdev emulation into their own source
and header files and clean up the include statements throughout DRM.
Many drivers only call drm_fbdev_generic_setup() and can avoid including
other Linux header files.

Built on x86-64, aarch64, arm, ppc64le. Tested with various combinations
of bochs, radeon, simpledrm.

Thomas Zimmermann (21):
  drm/amdgpu: Don't set struct drm_driver.lastclose
  drm/imx: Don't set struct drm_driver.lastclose
  drm/ingenic: Don't set struct drm_driver.lastclose
  drm/komeda: Don't set struct drm_driver.lastclose
  drm/logicvc: Don't set struct drm_driver.lastclose
  drm/mcde: Don't set struct drm_driver.lastclose
  drm/rockchip: Don't set struct drm_driver.lastclose
  drm/vboxvideo: Don't set struct drm_driver.lastclose
  drm/panel-ili9341: Include <linux/backlight.h>
  drm/tve200: Include <linux/of.h>
  drm/fb-helper: Cleanup include statements in header file
  drm/fb_helper: Rename field fbdev to info in struct drm_fb_helper
  drm/fb-helper: Rename drm_fb_helper_alloc_fbi() to use _info postfix
  drm/fb-helper: Rename drm_fb_helper_unregister_fbi() to use _info
    postfix
  drm/fb-helper: Disconnect damage worker from update logic
  drm/fb-helper: Call fb_sync in I/O functions
  drm/fb-helper: Perform all fbdev I/O with the same implementation
  drm/fb_helper: Minimize damage-helper overhead
  drm/fb-helper: Always initialize generic fbdev emulation
  drm/fb-helper: Move generic fbdev emulation into separate source file
  drm/fb-helper: Remove unnecessary include statements

 drivers/gpu/drm/Makefile                      |    2 +-
 .../gpu/drm/amd/amdgpu/amdgpu_connectors.c    |    1 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c   |    2 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |    1 -
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |    2 -
 .../gpu/drm/arm/display/komeda/komeda_drv.c   |    2 +-
 .../gpu/drm/arm/display/komeda/komeda_kms.c   |    2 -
 drivers/gpu/drm/arm/hdlcd_crtc.c              |    1 -
 drivers/gpu/drm/arm/hdlcd_drv.c               |    2 +-
 drivers/gpu/drm/arm/malidp_drv.c              |    2 +-
 drivers/gpu/drm/armada/armada_fbdev.c         |    6 +-
 drivers/gpu/drm/aspeed/aspeed_gfx_drv.c       |    2 +-
 drivers/gpu/drm/ast/ast_drv.c                 |    1 +
 drivers/gpu/drm/ast/ast_drv.h                 |    1 -
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c  |    2 +-
 drivers/gpu/drm/bridge/tc358762.c             |    2 +-
 drivers/gpu/drm/drm_crtc_helper.c             |    1 -
 drivers/gpu/drm/drm_fb_helper.c               | 1081 ++++++-----------
 drivers/gpu/drm/drm_fbdev.c                   |  512 ++++++++
 drivers/gpu/drm/drm_gem_framebuffer_helper.c  |    1 -
 drivers/gpu/drm/drm_probe_helper.c            |    1 -
 drivers/gpu/drm/etnaviv/etnaviv_drv.h         |    3 +-
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c     |    6 +-
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c     |    2 +-
 drivers/gpu/drm/gma500/framebuffer.c          |    6 +-
 drivers/gpu/drm/gud/gud_drv.c                 |    2 +-
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c   |    1 +
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h   |    1 -
 .../gpu/drm/hisilicon/kirin/kirin_drm_drv.c   |    2 +-
 drivers/gpu/drm/hyperv/hyperv_drm_drv.c       |    2 +-
 drivers/gpu/drm/hyperv/hyperv_drm_modeset.c   |    1 -
 drivers/gpu/drm/i915/display/intel_fbdev.c    |    8 +-
 drivers/gpu/drm/imx/dcss/dcss-kms.c           |    3 +-
 drivers/gpu/drm/imx/imx-drm-core.c            |    2 +-
 drivers/gpu/drm/imx/imx-ldb.c                 |    2 +-
 drivers/gpu/drm/imx/imx-tve.c                 |    1 -
 drivers/gpu/drm/imx/parallel-display.c        |    2 +-
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c     |    3 +-
 drivers/gpu/drm/kmb/kmb_drv.c                 |    2 +-
 drivers/gpu/drm/kmb/kmb_plane.c               |    1 -
 drivers/gpu/drm/logicvc/logicvc_drm.c         |    2 +-
 drivers/gpu/drm/logicvc/logicvc_mode.c        |    2 -
 drivers/gpu/drm/mcde/mcde_drv.c               |    3 +-
 drivers/gpu/drm/mediatek/mtk_drm_drv.c        |    2 +-
 drivers/gpu/drm/meson/meson_drv.c             |    2 +-
 drivers/gpu/drm/mgag200/mgag200_drv.c         |    1 +
 drivers/gpu/drm/mgag200/mgag200_drv.h         |    1 -
 drivers/gpu/drm/msm/msm_fbdev.c               |    4 +-
 drivers/gpu/drm/mxsfb/lcdif_drv.c             |    2 +-
 drivers/gpu/drm/mxsfb/mxsfb_drv.c             |    2 +-
 drivers/gpu/drm/nouveau/nouveau_fbcon.c       |   27 +-
 drivers/gpu/drm/omapdrm/omap_fbdev.c          |    6 +-
 drivers/gpu/drm/panel/panel-ilitek-ili9341.c  |    3 +-
 drivers/gpu/drm/pl111/pl111_drv.c             |    2 +-
 drivers/gpu/drm/qxl/qxl_drv.c                 |    1 +
 drivers/gpu/drm/qxl/qxl_drv.h                 |    1 -
 drivers/gpu/drm/radeon/radeon_fb.c            |    6 +-
 drivers/gpu/drm/rcar-du/rcar_du_drv.c         |    2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |    2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.h   |    2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_fb.c    |    2 -
 drivers/gpu/drm/solomon/ssd130x.c             |    2 +-
 drivers/gpu/drm/sti/sti_drv.c                 |    2 +-
 drivers/gpu/drm/stm/drv.c                     |    2 +-
 drivers/gpu/drm/sun4i/sun4i_drv.c             |    2 +-
 drivers/gpu/drm/tegra/fb.c                    |    8 +-
 drivers/gpu/drm/tidss/tidss_drv.c             |    2 +-
 drivers/gpu/drm/tidss/tidss_kms.c             |    1 -
 drivers/gpu/drm/tilcdc/tilcdc_drv.c           |    2 +-
 drivers/gpu/drm/tiny/arcpgu.c                 |    2 +-
 drivers/gpu/drm/tiny/bochs.c                  |    2 +-
 drivers/gpu/drm/tiny/cirrus.c                 |    2 +-
 drivers/gpu/drm/tiny/gm12u320.c               |    2 +-
 drivers/gpu/drm/tiny/hx8357d.c                |    2 +-
 drivers/gpu/drm/tiny/ili9163.c                |    2 +-
 drivers/gpu/drm/tiny/ili9225.c                |    2 +-
 drivers/gpu/drm/tiny/ili9341.c                |    2 +-
 drivers/gpu/drm/tiny/ili9486.c                |    2 +-
 drivers/gpu/drm/tiny/mi0283qt.c               |    2 +-
 drivers/gpu/drm/tiny/ofdrm.c                  |    2 +-
 drivers/gpu/drm/tiny/panel-mipi-dbi.c         |    2 +-
 drivers/gpu/drm/tiny/repaper.c                |    2 +-
 drivers/gpu/drm/tiny/simpledrm.c              |    2 +-
 drivers/gpu/drm/tiny/st7586.c                 |    2 +-
 drivers/gpu/drm/tiny/st7735r.c                |    2 +-
 drivers/gpu/drm/tve200/tve200_drv.c           |    3 +-
 drivers/gpu/drm/udl/udl_drv.c                 |    2 +-
 drivers/gpu/drm/v3d/v3d_drv.c                 |    1 -
 drivers/gpu/drm/vboxvideo/vbox_drv.c          |    4 +-
 drivers/gpu/drm/vboxvideo/vbox_main.c         |    1 -
 drivers/gpu/drm/vc4/vc4_drv.c                 |    2 +-
 drivers/gpu/drm/virtio/virtgpu_drv.c          |    1 +
 drivers/gpu/drm/virtio/virtgpu_drv.h          |    1 -
 drivers/gpu/drm/vkms/vkms_drv.c               |    2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c            |    3 +
 drivers/gpu/drm/xen/xen_drm_front_gem.c       |    1 -
 drivers/gpu/drm/xlnx/zynqmp_dpsub.c           |    2 +-
 include/drm/drm_fb_helper.h                   |   59 +-
 include/drm/drm_fbdev.h                       |   15 +
 99 files changed, 1019 insertions(+), 883 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_fbdev.c
 create mode 100644 include/drm/drm_fbdev.h


base-commit: 8c797a984264f04708d2099e83c85978a0fede89
prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d
prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
prerequisite-patch-id: 3f204510fcbf9530d6540bd8e6128cce598988b6
-- 
2.38.0

[PATCH 01/21] drm/amdgpu: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as amdgpu uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c       | 1 -
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 --
 2 files changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 23998f727c7f9..fb7186c5ade2a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -1224,7 +1224,6 @@ amdgpu_display_user_framebuffer_create(struct drm_device *dev,
 
 const struct drm_mode_config_funcs amdgpu_mode_funcs = {
 	.fb_create = amdgpu_display_user_framebuffer_create,
-	.output_poll_changed = drm_fb_helper_output_poll_changed,
 };
 
 static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index f6a9e8fdd87d6..e9a28a5363b9a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -82,7 +82,6 @@
 #include <drm/drm_atomic_uapi.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_blend.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_vblank.h>
@@ -2810,7 +2809,6 @@ const struct amdgpu_ip_block_version dm_ip_block =
 static const struct drm_mode_config_funcs amdgpu_dm_mode_funcs = {
 	.fb_create = amdgpu_display_user_framebuffer_create,
 	.get_format_info = amd_get_format_info,
-	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = amdgpu_dm_atomic_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
-- 
2.38.0

[PATCH 02/21] drm/imx: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as imx uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/imx/dcss/dcss-kms.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.c b/drivers/gpu/drm/imx/dcss/dcss-kms.c
index b4f82ebca5325..1defd6a40f11d 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-kms.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-kms.c
@@ -21,7 +21,6 @@ DEFINE_DRM_GEM_DMA_FOPS(dcss_cma_fops);
 
 static const struct drm_mode_config_funcs dcss_drm_mode_config_funcs = {
 	.fb_create = drm_gem_fb_create,
-	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
-- 
2.38.0

[PATCH 03/21] drm/ingenic: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_mode_config.output_poll_changed. It's used to
inform the fbdev console about conncetor changes. But as ingenic
uses generic fbdev emulation, the console is being informed by the
DRM client helpers already. See the calls to drm_client_dev_hotplug()
in drm_probe_helper.c.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index ab0515d2c420a..99f86f1ba8bee 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -1018,7 +1018,6 @@ static const struct drm_bridge_funcs ingenic_drm_bridge_funcs = {
 
 static const struct drm_mode_config_funcs ingenic_drm_mode_config_funcs = {
 	.fb_create		= ingenic_drm_gem_fb_create,
-	.output_poll_changed	= drm_fb_helper_output_poll_changed,
 	.atomic_check		= drm_atomic_helper_check,
 	.atomic_commit		= drm_atomic_helper_commit,
 };
-- 
2.38.0

[PATCH 04/21] drm/komeda: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as komeda uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 451746ebbe713..62dc64550793e 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -10,7 +10,6 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_managed.h>
@@ -59,7 +58,6 @@ static irqreturn_t komeda_kms_irq_handler(int irq, void *data)
 
 static const struct drm_driver komeda_kms_driver = {
 	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.lastclose			= drm_fb_helper_lastclose,
 	DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(komeda_gem_dma_dumb_create),
 	.fops = &komeda_cma_fops,
 	.name = "komeda",
-- 
2.38.0

[PATCH 05/21] drm/logicvc: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as logicvc uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/logicvc/logicvc_mode.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/logicvc/logicvc_mode.c b/drivers/gpu/drm/logicvc/logicvc_mode.c
index d8207ffda1af9..9971950ebd4ee 100644
--- a/drivers/gpu/drm/logicvc/logicvc_mode.c
+++ b/drivers/gpu/drm/logicvc/logicvc_mode.c
@@ -10,7 +10,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_mode_config.h>
@@ -26,7 +25,6 @@
 
 static const struct drm_mode_config_funcs logicvc_mode_config_funcs = {
 	.fb_create		= drm_gem_fb_create,
-	.output_poll_changed	= drm_fb_helper_output_poll_changed,
 	.atomic_check		= drm_atomic_helper_check,
 	.atomic_commit		= drm_atomic_helper_commit,
 };
-- 
2.38.0

[PATCH 06/21] drm/mcde: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as mcde uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/mcde/mcde_drv.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
index 1c4482ad507d9..38c3907bb151a 100644
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -203,7 +203,6 @@ DEFINE_DRM_GEM_DMA_FOPS(drm_fops);
 static const struct drm_driver mcde_drm_driver = {
 	.driver_features =
 		DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
-	.lastclose = drm_fb_helper_lastclose,
 	.ioctls = NULL,
 	.fops = &drm_fops,
 	.name = "mcde",
-- 
2.38.0

[PATCH 07/21] drm/rockchip: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as rockchip uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index 092bf863110b7..7de64b0ad047f 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -9,7 +9,6 @@
 #include <drm/drm.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_damage_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_framebuffer_helper.h>
@@ -101,7 +100,6 @@ rockchip_fb_create(struct drm_device *dev, struct drm_file *file,
 
 static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
 	.fb_create = rockchip_fb_create,
-	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
-- 
2.38.0

[PATCH 08/21] drm/vboxvideo: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

Don't set struct drm_driver.lastclose. It's used to restore the
fbdev console. But as vboxvideo uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See
the call to drm_client_dev_restore() in drm_lastclose().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/vboxvideo/vbox_drv.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/vboxvideo/vbox_drv.c b/drivers/gpu/drm/vboxvideo/vbox_drv.c
index f4f2bd79a7cb6..1cd716eb17a1c 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_drv.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_drv.c
@@ -178,8 +178,6 @@ static const struct drm_driver driver = {
 	.driver_features =
 	    DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
 
-	.lastclose = drm_fb_helper_lastclose,
-
 	.fops = &vbox_fops,
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
-- 
2.38.0

[PATCH 09/21] drm/panel-ili9341: Include <linux/backlight.h>

[Thomas Zimmermann]

Include <linux/backlight.h> for devm_of_find_backlight().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/panel/panel-ilitek-ili9341.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
index 39dc40cf681f0..b59472c29a40d 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
@@ -18,6 +18,7 @@
  * Copyright 2018 David Lechner <david@lechnology.com>
  */
 
+#include <linux/backlight.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
-- 
2.38.0

[PATCH 10/21] drm/tve200: Include <linux/of.h>

[Thomas Zimmermann]

Include <linux/of.h> for of_match_ptr().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/tve200/tve200_drv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
index 04db72e3fa9c2..611785e097576 100644
--- a/drivers/gpu/drm/tve200/tve200_drv.c
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -32,6 +32,7 @@
 #include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/shmem_fs.h>
 #include <linux/slab.h>
-- 
2.38.0

[PATCH 11/21] drm/fb-helper: Cleanup include statements in header file

[Thomas Zimmermann]

Only include what we have to.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 include/drm/drm_fb_helper.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index fddd0d1af6891..e923089522896 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -32,11 +32,9 @@
 
 struct drm_fb_helper;
 
-#include <drm/drm_client.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_device.h>
 #include <linux/fb.h>
-#include <linux/kgdb.h>
+
+#include <drm/drm_client.h>
 
 enum mode_set_atomic {
 	LEAVE_ATOMIC_MODE_SET,
-- 
2.38.0

[PATCH 12/21] drm/fb_helper: Rename field fbdev to info in struct drm_fb_helper

[Thomas Zimmermann]

Rename struct drm_fb_helper.fbdev to info. The current name is
misleading as it overlaps with generic fbdev naming conventions.
Adapt to the usual naming in fbdev drivers by calling the field
'info'. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/drm_fb_helper.c            | 40 +++++++++++-----------
 drivers/gpu/drm/i915/display/intel_fbdev.c |  2 +-
 drivers/gpu/drm/nouveau/nouveau_fbcon.c    | 23 ++++++-------
 drivers/gpu/drm/omapdrm/omap_fbdev.c       |  2 +-
 drivers/gpu/drm/tegra/fb.c                 |  2 +-
 include/drm/drm_fb_helper.h                |  4 +--
 6 files changed, 36 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 71edb80fe0fb9..480bf4f568b7b 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -368,7 +368,7 @@ static void drm_fb_helper_resume_worker(struct work_struct *work)
 						    resume_work);
 
 	console_lock();
-	fb_set_suspend(helper->fbdev, 0);
+	fb_set_suspend(helper->info, 0);
 	console_unlock();
 }
 
@@ -401,7 +401,7 @@ static void drm_fb_helper_damage_blit_real(struct drm_fb_helper *fb_helper,
 		break;
 	}
 
-	src = fb_helper->fbdev->screen_buffer + offset;
+	src = fb_helper->info->screen_buffer + offset;
 	iosys_map_incr(dst, offset); /* go to first pixel within clip rect */
 
 	for (y = clip->y1; y < clip->y2; y++) {
@@ -598,7 +598,7 @@ struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
 		goto err_free_cmap;
 	}
 
-	fb_helper->fbdev = info;
+	fb_helper->info = info;
 	info->skip_vt_switch = true;
 
 	return info;
@@ -621,8 +621,8 @@ EXPORT_SYMBOL(drm_fb_helper_alloc_fbi);
  */
 void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
 {
-	if (fb_helper && fb_helper->fbdev)
-		unregister_framebuffer(fb_helper->fbdev);
+	if (fb_helper && fb_helper->info)
+		unregister_framebuffer(fb_helper->info);
 }
 EXPORT_SYMBOL(drm_fb_helper_unregister_fbi);
 
@@ -647,13 +647,13 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
 	cancel_work_sync(&fb_helper->resume_work);
 	cancel_work_sync(&fb_helper->damage_work);
 
-	info = fb_helper->fbdev;
+	info = fb_helper->info;
 	if (info) {
 		if (info->cmap.len)
 			fb_dealloc_cmap(&info->cmap);
 		framebuffer_release(info);
 	}
-	fb_helper->fbdev = NULL;
+	fb_helper->info = NULL;
 
 	mutex_lock(&kernel_fb_helper_lock);
 	if (!list_empty(&fb_helper->kernel_fb_list)) {
@@ -914,8 +914,8 @@ EXPORT_SYMBOL(drm_fb_helper_cfb_imageblit);
  */
 void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend)
 {
-	if (fb_helper && fb_helper->fbdev)
-		fb_set_suspend(fb_helper->fbdev, suspend);
+	if (fb_helper && fb_helper->info)
+		fb_set_suspend(fb_helper->info, suspend);
 }
 EXPORT_SYMBOL(drm_fb_helper_set_suspend);
 
@@ -938,20 +938,20 @@ EXPORT_SYMBOL(drm_fb_helper_set_suspend);
 void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
 					bool suspend)
 {
-	if (!fb_helper || !fb_helper->fbdev)
+	if (!fb_helper || !fb_helper->info)
 		return;
 
 	/* make sure there's no pending/ongoing resume */
 	flush_work(&fb_helper->resume_work);
 
 	if (suspend) {
-		if (fb_helper->fbdev->state != FBINFO_STATE_RUNNING)
+		if (fb_helper->info->state != FBINFO_STATE_RUNNING)
 			return;
 
 		console_lock();
 
 	} else {
-		if (fb_helper->fbdev->state == FBINFO_STATE_RUNNING)
+		if (fb_helper->info->state == FBINFO_STATE_RUNNING)
 			return;
 
 		if (!console_trylock()) {
@@ -960,7 +960,7 @@ void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
 		}
 	}
 
-	fb_set_suspend(fb_helper->fbdev, suspend);
+	fb_set_suspend(fb_helper->info, suspend);
 	console_unlock();
 }
 EXPORT_SYMBOL(drm_fb_helper_set_suspend_unlocked);
@@ -1850,7 +1850,7 @@ EXPORT_SYMBOL(drm_fb_helper_fill_info);
 /*
  * This is a continuation of drm_setup_crtcs() that sets up anything related
  * to the framebuffer. During initialization, drm_setup_crtcs() is called before
- * the framebuffer has been allocated (fb_helper->fb and fb_helper->fbdev).
+ * the framebuffer has been allocated (fb_helper->fb and fb_helper->info).
  * So, any setup that touches those fields needs to be done here instead of in
  * drm_setup_crtcs().
  */
@@ -1858,7 +1858,7 @@ static void drm_setup_crtcs_fb(struct drm_fb_helper *fb_helper)
 {
 	struct drm_client_dev *client = &fb_helper->client;
 	struct drm_connector_list_iter conn_iter;
-	struct fb_info *info = fb_helper->fbdev;
+	struct fb_info *info = fb_helper->info;
 	unsigned int rotation, sw_rotations = 0;
 	struct drm_connector *connector;
 	struct drm_mode_set *modeset;
@@ -1942,7 +1942,7 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper,
 
 	fb_helper->deferred_setup = false;
 
-	info = fb_helper->fbdev;
+	info = fb_helper->info;
 	info->var.pixclock = 0;
 	/* Shamelessly allow physical address leaking to userspace */
 #if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
@@ -2077,7 +2077,7 @@ int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
 	drm_setup_crtcs_fb(fb_helper);
 	mutex_unlock(&fb_helper->lock);
 
-	drm_fb_helper_set_par(fb_helper->fbdev);
+	drm_fb_helper_set_par(fb_helper->info);
 
 	return 0;
 }
@@ -2135,7 +2135,7 @@ static int drm_fbdev_fb_release(struct fb_info *info, int user)
 
 static void drm_fbdev_cleanup(struct drm_fb_helper *fb_helper)
 {
-	struct fb_info *fbi = fb_helper->fbdev;
+	struct fb_info *fbi = fb_helper->info;
 	void *shadow = NULL;
 
 	if (!fb_helper->dev)
@@ -2495,7 +2495,7 @@ static void drm_fbdev_client_unregister(struct drm_client_dev *client)
 {
 	struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
 
-	if (fb_helper->fbdev)
+	if (fb_helper->info)
 		/* drm_fbdev_fb_destroy() takes care of cleanup */
 		drm_fb_helper_unregister_fbi(fb_helper);
 	else
@@ -2546,7 +2546,7 @@ static int drm_fbdev_client_hotplug(struct drm_client_dev *client)
 	drm_fbdev_cleanup(fb_helper);
 err:
 	fb_helper->dev = NULL;
-	fb_helper->fbdev = NULL;
+	fb_helper->info = NULL;
 
 	drm_err(dev, "fbdev: Failed to setup generic emulation (ret=%d)\n", ret);
 
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 112aa0447a0dc..b73c6a16f46a0 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -627,7 +627,7 @@ void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous
 	if (!ifbdev || !ifbdev->vma)
 		goto set_suspend;
 
-	info = ifbdev->helper.fbdev;
+	info = ifbdev->helper.info;
 
 	if (synchronous) {
 		/* Flush any pending work to turn the console on, and then
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 3c7e0c9d6baf1..ac4bd529ae2e8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -231,9 +231,9 @@ void
 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
-	if (drm->fbcon && drm->fbcon->helper.fbdev) {
-		drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
-		drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
+	if (drm->fbcon && drm->fbcon->helper.info) {
+		drm->fbcon->saved_flags = drm->fbcon->helper.info->flags;
+		drm->fbcon->helper.info->flags |= FBINFO_HWACCEL_DISABLED;
 	}
 }
 
@@ -241,9 +241,8 @@ void
 nouveau_fbcon_accel_restore(struct drm_device *dev)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
-	if (drm->fbcon && drm->fbcon->helper.fbdev) {
-		drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
-	}
+	if (drm->fbcon && drm->fbcon->helper.info)
+		drm->fbcon->helper.info->flags = drm->fbcon->saved_flags;
 }
 
 static void
@@ -253,8 +252,8 @@ nouveau_fbcon_accel_fini(struct drm_device *dev)
 	struct nouveau_fbdev *fbcon = drm->fbcon;
 	if (fbcon && drm->channel) {
 		console_lock();
-		if (fbcon->helper.fbdev)
-			fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
+		if (fbcon->helper.info)
+			fbcon->helper.info->flags |= FBINFO_HWACCEL_DISABLED;
 		console_unlock();
 		nouveau_channel_idle(drm->channel);
 		nvif_object_dtor(&fbcon->twod);
@@ -272,7 +271,7 @@ nouveau_fbcon_accel_init(struct drm_device *dev)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_fbdev *fbcon = drm->fbcon;
-	struct fb_info *info = fbcon->helper.fbdev;
+	struct fb_info *info = fbcon->helper.info;
 	int ret;
 
 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
@@ -290,7 +289,7 @@ nouveau_fbcon_accel_init(struct drm_device *dev)
 static void
 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
 {
-	struct fb_info *info = fbcon->helper.fbdev;
+	struct fb_info *info = fbcon->helper.info;
 	struct fb_fillrect rect;
 
 	/* Clear the entire fbcon.  The drm will program every connector
@@ -586,8 +585,8 @@ nouveau_fbcon_init(struct drm_device *dev)
 	if (ret)
 		goto fini;
 
-	if (fbcon->helper.fbdev)
-		fbcon->helper.fbdev->pixmap.buf_align = 4;
+	if (fbcon->helper.info)
+		fbcon->helper.info->pixmap.buf_align = 4;
 	return 0;
 
 fini:
diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c
index 40706c5aad7b5..f30aed64f6e20 100644
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@@ -38,7 +38,7 @@ static struct drm_fb_helper *get_fb(struct fb_info *fbi);
 static void pan_worker(struct work_struct *work)
 {
 	struct omap_fbdev *fbdev = container_of(work, struct omap_fbdev, work);
-	struct fb_info *fbi = fbdev->base.fbdev;
+	struct fb_info *fbi = fbdev->base.info;
 	int npages;
 
 	/* DMM roll shifts in 4K pages: */
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 9291209154a7a..e652ea6ec85df 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -261,7 +261,7 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper,
 
 	fb = fbdev->fb;
 	helper->fb = fb;
-	helper->fbdev = info;
+	helper->info = info;
 
 	info->fbops = &tegra_fb_ops;
 
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index e923089522896..d83e2d8e92eb9 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -96,7 +96,7 @@ struct drm_fb_helper_funcs {
  * @fb: Scanout framebuffer object
  * @dev: DRM device
  * @funcs: driver callbacks for fb helper
- * @fbdev: emulated fbdev device info struct
+ * @info: emulated fbdev device info struct
  * @pseudo_palette: fake palette of 16 colors
  * @damage_clip: clip rectangle used with deferred_io to accumulate damage to
  *                the screen buffer
@@ -127,7 +127,7 @@ struct drm_fb_helper {
 	struct drm_framebuffer *fb;
 	struct drm_device *dev;
 	const struct drm_fb_helper_funcs *funcs;
-	struct fb_info *fbdev;
+	struct fb_info *info;
 	u32 pseudo_palette[17];
 	struct drm_clip_rect damage_clip;
 	spinlock_t damage_lock;
-- 
2.38.0

[PATCH 13/21] drm/fb-helper: Rename drm_fb_helper_alloc_fbi() to use _info postfix

[Thomas Zimmermann]

Rename drm_fb_helper_alloc_fbi() to drm_fb_helper_alloc_info() as
part of unifying the naming within fbdev helpers. Adapt drivers. No
functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/armada/armada_fbdev.c      | 2 +-
 drivers/gpu/drm/drm_fb_helper.c            | 8 ++++----
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c  | 2 +-
 drivers/gpu/drm/gma500/framebuffer.c       | 2 +-
 drivers/gpu/drm/i915/display/intel_fbdev.c | 2 +-
 drivers/gpu/drm/msm/msm_fbdev.c            | 2 +-
 drivers/gpu/drm/nouveau/nouveau_fbcon.c    | 2 +-
 drivers/gpu/drm/omapdrm/omap_fbdev.c       | 2 +-
 drivers/gpu/drm/radeon/radeon_fb.c         | 2 +-
 drivers/gpu/drm/tegra/fb.c                 | 2 +-
 include/drm/drm_fb_helper.h                | 4 ++--
 11 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c
index 38f5170c0fea6..eaae98d9377ae 100644
--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@@ -72,7 +72,7 @@ static int armada_fbdev_create(struct drm_fb_helper *fbh,
 	if (IS_ERR(dfb))
 		return PTR_ERR(dfb);
 
-	info = drm_fb_helper_alloc_fbi(fbh);
+	info = drm_fb_helper_alloc_info(fbh);
 	if (IS_ERR(info)) {
 		ret = PTR_ERR(info);
 		goto err_fballoc;
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 480bf4f568b7b..881e6a04fa706 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -558,7 +558,7 @@ int drm_fb_helper_init(struct drm_device *dev,
 EXPORT_SYMBOL(drm_fb_helper_init);
 
 /**
- * drm_fb_helper_alloc_fbi - allocate fb_info and some of its members
+ * drm_fb_helper_alloc_info - allocate fb_info and some of its members
  * @fb_helper: driver-allocated fbdev helper
  *
  * A helper to alloc fb_info and the members cmap and apertures. Called
@@ -570,7 +570,7 @@ EXPORT_SYMBOL(drm_fb_helper_init);
  * fb_info pointer if things went okay, pointer containing error code
  * otherwise
  */
-struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
+struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
 {
 	struct device *dev = fb_helper->dev->dev;
 	struct fb_info *info;
@@ -609,7 +609,7 @@ struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
 	framebuffer_release(info);
 	return ERR_PTR(ret);
 }
-EXPORT_SYMBOL(drm_fb_helper_alloc_fbi);
+EXPORT_SYMBOL(drm_fb_helper_alloc_info);
 
 /**
  * drm_fb_helper_unregister_fbi - unregister fb_info framebuffer device
@@ -2440,7 +2440,7 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 	fb_helper->fb = buffer->fb;
 	fb = buffer->fb;
 
-	fbi = drm_fb_helper_alloc_fbi(fb_helper);
+	fbi = drm_fb_helper_alloc_info(fb_helper);
 	if (IS_ERR(fbi))
 		return PTR_ERR(fbi);
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 767afd2bfa822..8741eb0b1b604 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -63,7 +63,7 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
 	unsigned int size = fb->width * fb->height * fb->format->cpp[0];
 	unsigned long offset;
 
-	fbi = drm_fb_helper_alloc_fbi(helper);
+	fbi = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(fbi)) {
 		DRM_DEV_ERROR(to_dma_dev(helper->dev),
 			      "failed to allocate fb info.\n");
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index aa3ecf771fd36..a5fad2483fa3a 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -268,7 +268,7 @@ static int psbfb_create(struct drm_fb_helper *fb_helper,
 
 	memset(dev_priv->vram_addr + backing->offset, 0, size);
 
-	info = drm_fb_helper_alloc_fbi(fb_helper);
+	info = drm_fb_helper_alloc_info(fb_helper);
 	if (IS_ERR(info)) {
 		ret = PTR_ERR(info);
 		goto err_drm_gem_object_put;
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index b73c6a16f46a0..a1357acb5a1c6 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -254,7 +254,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
 		goto out_unlock;
 	}
 
-	info = drm_fb_helper_alloc_fbi(helper);
+	info = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(info)) {
 		drm_err(&dev_priv->drm, "Failed to allocate fb_info\n");
 		ret = PTR_ERR(info);
diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c
index 46168eccfac4a..3de661730a8bb 100644
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -93,7 +93,7 @@ static int msm_fbdev_create(struct drm_fb_helper *helper,
 		goto fail;
 	}
 
-	fbi = drm_fb_helper_alloc_fbi(helper);
+	fbi = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(fbi)) {
 		DRM_DEV_ERROR(dev->dev, "failed to allocate fb info\n");
 		ret = PTR_ERR(fbi);
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index ac4bd529ae2e8..fca40124fc17c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -362,7 +362,7 @@ nouveau_fbcon_create(struct drm_fb_helper *helper,
 		}
 	}
 
-	info = drm_fb_helper_alloc_fbi(helper);
+	info = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(info)) {
 		ret = PTR_ERR(info);
 		goto out_unlock;
diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c
index f30aed64f6e20..b21ead9aca2d5 100644
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@@ -161,7 +161,7 @@ static int omap_fbdev_create(struct drm_fb_helper *helper,
 		goto fail;
 	}
 
-	fbi = drm_fb_helper_alloc_fbi(helper);
+	fbi = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(fbi)) {
 		dev_err(dev->dev, "failed to allocate fb info\n");
 		ret = PTR_ERR(fbi);
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index 6ccea51d40722..2dc96fdd35f9f 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -243,7 +243,7 @@ static int radeonfb_create(struct drm_fb_helper *helper,
 	rbo = gem_to_radeon_bo(gobj);
 
 	/* okay we have an object now allocate the framebuffer */
-	info = drm_fb_helper_alloc_fbi(helper);
+	info = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(info)) {
 		ret = PTR_ERR(info);
 		goto out;
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index e652ea6ec85df..d5a9c800ef829 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -243,7 +243,7 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper,
 	if (IS_ERR(bo))
 		return PTR_ERR(bo);
 
-	info = drm_fb_helper_alloc_fbi(helper);
+	info = drm_fb_helper_alloc_info(helper);
 	if (IS_ERR(info)) {
 		dev_err(drm->dev, "failed to allocate framebuffer info\n");
 		drm_gem_object_put(&bo->gem);
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index d83e2d8e92eb9..5ec9d9c68d144 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -222,7 +222,7 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 
 int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
 
-struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
+struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper);
 void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
 void drm_fb_helper_fill_info(struct fb_info *info,
 			     struct drm_fb_helper *fb_helper,
@@ -320,7 +320,7 @@ drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
 }
 
 static inline struct fb_info *
-drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
+drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
 {
 	return NULL;
 }
-- 
2.38.0

[PATCH 14/21] drm/fb-helper: Rename drm_fb_helper_unregister_fbi() to use _info postfix

[Thomas Zimmermann]

Rename drm_fb_helper_unregister_fbi() to drm_fb_helper_unregister_info()
as part of unifying the naming within fbdev helpers. Adapt drivers. No
functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/armada/armada_fbdev.c      | 2 +-
 drivers/gpu/drm/drm_fb_helper.c            | 8 ++++----
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c  | 2 +-
 drivers/gpu/drm/gma500/framebuffer.c       | 2 +-
 drivers/gpu/drm/i915/display/intel_fbdev.c | 2 +-
 drivers/gpu/drm/msm/msm_fbdev.c            | 2 +-
 drivers/gpu/drm/nouveau/nouveau_fbcon.c    | 2 +-
 drivers/gpu/drm/omapdrm/omap_fbdev.c       | 2 +-
 drivers/gpu/drm/radeon/radeon_fb.c         | 2 +-
 drivers/gpu/drm/tegra/fb.c                 | 2 +-
 include/drm/drm_fb_helper.h                | 4 ++--
 11 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c
index eaae98d9377ae..f02f6a5ba8320 100644
--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@@ -155,7 +155,7 @@ void armada_fbdev_fini(struct drm_device *dev)
 	struct drm_fb_helper *fbh = priv->fbdev;
 
 	if (fbh) {
-		drm_fb_helper_unregister_fbi(fbh);
+		drm_fb_helper_unregister_info(fbh);
 
 		drm_fb_helper_fini(fbh);
 
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 881e6a04fa706..bfbb2af144060 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -612,19 +612,19 @@ struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
 EXPORT_SYMBOL(drm_fb_helper_alloc_info);
 
 /**
- * drm_fb_helper_unregister_fbi - unregister fb_info framebuffer device
+ * drm_fb_helper_unregister_info - unregister fb_info framebuffer device
  * @fb_helper: driver-allocated fbdev helper, can be NULL
  *
  * A wrapper around unregister_framebuffer, to release the fb_info
  * framebuffer device. This must be called before releasing all resources for
  * @fb_helper by calling drm_fb_helper_fini().
  */
-void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
+void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper)
 {
 	if (fb_helper && fb_helper->info)
 		unregister_framebuffer(fb_helper->info);
 }
-EXPORT_SYMBOL(drm_fb_helper_unregister_fbi);
+EXPORT_SYMBOL(drm_fb_helper_unregister_info);
 
 /**
  * drm_fb_helper_fini - finialize a &struct drm_fb_helper
@@ -2497,7 +2497,7 @@ static void drm_fbdev_client_unregister(struct drm_client_dev *client)
 
 	if (fb_helper->info)
 		/* drm_fbdev_fb_destroy() takes care of cleanup */
-		drm_fb_helper_unregister_fbi(fb_helper);
+		drm_fb_helper_unregister_info(fb_helper);
 	else
 		drm_fbdev_release(fb_helper);
 }
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 8741eb0b1b604..86c489d945849 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -201,7 +201,7 @@ static void exynos_drm_fbdev_destroy(struct drm_device *dev,
 			drm_framebuffer_remove(fb);
 	}
 
-	drm_fb_helper_unregister_fbi(fb_helper);
+	drm_fb_helper_unregister_info(fb_helper);
 
 	drm_fb_helper_fini(fb_helper);
 }
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index a5fad2483fa3a..bee4ce24904f6 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -383,7 +383,7 @@ static int psb_fbdev_destroy(struct drm_device *dev,
 {
 	struct drm_framebuffer *fb = fb_helper->fb;
 
-	drm_fb_helper_unregister_fbi(fb_helper);
+	drm_fb_helper_unregister_info(fb_helper);
 
 	drm_fb_helper_fini(fb_helper);
 	drm_framebuffer_unregister_private(fb);
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index a1357acb5a1c6..0ac78b9718684 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -584,7 +584,7 @@ void intel_fbdev_unregister(struct drm_i915_private *dev_priv)
 	if (!current_is_async())
 		intel_fbdev_sync(ifbdev);
 
-	drm_fb_helper_unregister_fbi(&ifbdev->helper);
+	drm_fb_helper_unregister_info(&ifbdev->helper);
 }
 
 void intel_fbdev_fini(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c
index 3de661730a8bb..0670c98b9c5cc 100644
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -184,7 +184,7 @@ void msm_fbdev_free(struct drm_device *dev)
 
 	DBG();
 
-	drm_fb_helper_unregister_fbi(helper);
+	drm_fb_helper_unregister_info(helper);
 
 	drm_fb_helper_fini(helper);
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index fca40124fc17c..e87de7906f780 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -419,7 +419,7 @@ nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
 	struct drm_framebuffer *fb = fbcon->helper.fb;
 	struct nouveau_bo *nvbo;
 
-	drm_fb_helper_unregister_fbi(&fbcon->helper);
+	drm_fb_helper_unregister_info(&fbcon->helper);
 	drm_fb_helper_fini(&fbcon->helper);
 
 	if (fb && fb->obj[0]) {
diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c
index b21ead9aca2d5..537c759453ce1 100644
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@@ -274,7 +274,7 @@ void omap_fbdev_fini(struct drm_device *dev)
 	if (!helper)
 		return;
 
-	drm_fb_helper_unregister_fbi(helper);
+	drm_fb_helper_unregister_info(helper);
 
 	drm_fb_helper_fini(helper);
 
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index 2dc96fdd35f9f..936df79decc57 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -309,7 +309,7 @@ static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfb
 {
 	struct drm_framebuffer *fb = &rfbdev->fb;
 
-	drm_fb_helper_unregister_fbi(&rfbdev->helper);
+	drm_fb_helper_unregister_info(&rfbdev->helper);
 
 	if (fb->obj[0]) {
 		radeonfb_destroy_pinned_object(fb->obj[0]);
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index d5a9c800ef829..30fac20665f4e 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -348,7 +348,7 @@ static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
 
 static void tegra_fbdev_exit(struct tegra_fbdev *fbdev)
 {
-	drm_fb_helper_unregister_fbi(&fbdev->base);
+	drm_fb_helper_unregister_info(&fbdev->base);
 
 	if (fbdev->fb) {
 		struct tegra_bo *bo = tegra_fb_get_plane(fbdev->fb, 0);
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 5ec9d9c68d144..edc697a2fde24 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -223,7 +223,7 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
 int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
 
 struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper);
-void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
+void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper);
 void drm_fb_helper_fill_info(struct fb_info *info,
 			     struct drm_fb_helper *fb_helper,
 			     struct drm_fb_helper_surface_size *sizes);
@@ -325,7 +325,7 @@ drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
 	return NULL;
 }
 
-static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
+static inline void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper)
 {
 }
 
-- 
2.38.0

[PATCH 15/21] drm/fb-helper: Disconnect damage worker from update logic

[Thomas Zimmermann]

The fbdev helpers implement a damage worker that forwards fbdev
updates to the DRM driver. The worker's update logic depends on
the generic fbdev emulation. Separate the two via function pointer.

The generic fbdev emulation sets struct drm_fb_helper_funcs.fb_dirty,
a new callback that hides the update logic from the damage worker.
It's not possible to use the generic logic with other fbdev emulation,
because it contains additional code for the shadow buffering that
the generic emulation employs.

DRM drivers with internal fbdev emulation can set fb_dirty to their
own implementation if they require damage handling; although no such
drivers currently exist.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/drm_fb_helper.c | 75 ++++++++++++++++++++-------------
 include/drm/drm_fb_helper.h     | 15 +++++++
 2 files changed, 61 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index bfbb2af144060..f6d22cc4cd876 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -448,35 +448,24 @@ static int drm_fb_helper_damage_blit(struct drm_fb_helper *fb_helper,
 
 static void drm_fb_helper_damage_work(struct work_struct *work)
 {
-	struct drm_fb_helper *helper = container_of(work, struct drm_fb_helper,
-						    damage_work);
-	struct drm_device *dev = helper->dev;
+	struct drm_fb_helper *helper = container_of(work, struct drm_fb_helper, damage_work);
 	struct drm_clip_rect *clip = &helper->damage_clip;
 	struct drm_clip_rect clip_copy;
 	unsigned long flags;
 	int ret;
 
+	if (!helper->funcs->fb_dirty)
+		return;
+
 	spin_lock_irqsave(&helper->damage_lock, flags);
 	clip_copy = *clip;
 	clip->x1 = clip->y1 = ~0;
 	clip->x2 = clip->y2 = 0;
 	spin_unlock_irqrestore(&helper->damage_lock, flags);
 
-	/* Call damage handlers only if necessary */
-	if (!(clip_copy.x1 < clip_copy.x2 && clip_copy.y1 < clip_copy.y2))
-		return;
-
-	if (helper->buffer) {
-		ret = drm_fb_helper_damage_blit(helper, &clip_copy);
-		if (drm_WARN_ONCE(dev, ret, "Damage blitter failed: ret=%d\n", ret))
-			goto err;
-	}
-
-	if (helper->fb->funcs->dirty) {
-		ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, &clip_copy, 1);
-		if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret))
-			goto err;
-	}
+	ret = helper->funcs->fb_dirty(helper, &clip_copy);
+	if (ret)
+		goto err;
 
 	return;
 
@@ -670,16 +659,6 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
 }
 EXPORT_SYMBOL(drm_fb_helper_fini);
 
-static bool drm_fbdev_use_shadow_fb(struct drm_fb_helper *fb_helper)
-{
-	struct drm_device *dev = fb_helper->dev;
-	struct drm_framebuffer *fb = fb_helper->fb;
-
-	return dev->mode_config.prefer_shadow_fbdev ||
-	       dev->mode_config.prefer_shadow ||
-	       fb->funcs->dirty;
-}
-
 static void drm_fb_helper_damage(struct fb_info *info, u32 x, u32 y,
 				 u32 width, u32 height)
 {
@@ -687,7 +666,7 @@ static void drm_fb_helper_damage(struct fb_info *info, u32 x, u32 y,
 	struct drm_clip_rect *clip = &helper->damage_clip;
 	unsigned long flags;
 
-	if (!drm_fbdev_use_shadow_fb(helper))
+	if (!helper->funcs->fb_dirty)
 		return;
 
 	spin_lock_irqsave(&helper->damage_lock, flags);
@@ -2111,6 +2090,16 @@ void drm_fb_helper_output_poll_changed(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_fb_helper_output_poll_changed);
 
+static bool drm_fbdev_use_shadow_fb(struct drm_fb_helper *fb_helper)
+{
+	struct drm_device *dev = fb_helper->dev;
+	struct drm_framebuffer *fb = fb_helper->fb;
+
+	return dev->mode_config.prefer_shadow_fbdev ||
+	       dev->mode_config.prefer_shadow ||
+	       fb->funcs->dirty;
+}
+
 /* @user: 1=userspace, 0=fbcon */
 static int drm_fbdev_fb_open(struct fb_info *info, int user)
 {
@@ -2487,8 +2476,36 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 	return 0;
 }
 
+static int drm_fbdev_fb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
+{
+	struct drm_device *dev = helper->dev;
+	int ret;
+
+	if (!drm_fbdev_use_shadow_fb(helper))
+		return 0;
+
+	/* Call damage handlers only if necessary */
+	if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
+		return 0;
+
+	if (helper->buffer) {
+		ret = drm_fb_helper_damage_blit(helper, clip);
+		if (drm_WARN_ONCE(dev, ret, "Damage blitter failed: ret=%d\n", ret))
+			return ret;
+	}
+
+	if (helper->fb->funcs->dirty) {
+		ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
+		if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret))
+			return ret;
+	}
+
+	return 0;
+}
+
 static const struct drm_fb_helper_funcs drm_fb_helper_generic_funcs = {
 	.fb_probe = drm_fb_helper_generic_probe,
+	.fb_dirty = drm_fbdev_fb_dirty,
 };
 
 static void drm_fbdev_client_unregister(struct drm_client_dev *client)
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index edc697a2fde24..3d7a3d68dab8a 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -30,6 +30,7 @@
 #ifndef DRM_FB_HELPER_H
 #define DRM_FB_HELPER_H
 
+struct drm_clip_rect;
 struct drm_fb_helper;
 
 #include <linux/fb.h>
@@ -89,6 +90,20 @@ struct drm_fb_helper_funcs {
 	 */
 	int (*fb_probe)(struct drm_fb_helper *helper,
 			struct drm_fb_helper_surface_size *sizes);
+
+	/**
+	 * @fb_dirty:
+	 *
+	 * Driver callback to update the framebuffer memory. If set, fbdev
+	 * emulation will invoke this callback in regular intervals after
+	 * the framebuffer has been written.
+	 *
+	 * This callback is optional.
+	 *
+	 * Returns:
+	 * 0 on success, or an error code otherwise.
+	 */
+	int (*fb_dirty)(struct drm_fb_helper *helper, struct drm_clip_rect *clip);
 };
 
 /**
-- 
2.38.0

[PATCH 16/21] drm/fb-helper: Call fb_sync in I/O functions

[Thomas Zimmermann]

Call struct fb_ops.fb_sync in drm_fbdev_{read,write}() to mimic the
behavior of fbdev. Fbdev implementations of fb_read and fb_write in
struct fb_ops invoke fb_sync to synchronize with outstanding operations
before I/O. Doing the same in DRM implementations will allow us to use
them throughout DRM drivers.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/drm_fb_helper.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index f6d22cc4cd876..379e0d2f67198 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -2246,6 +2246,9 @@ static ssize_t drm_fbdev_fb_read(struct fb_info *info, char __user *buf,
 	if (total_size - count < pos)
 		count = total_size - pos;
 
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
 	if (drm_fbdev_use_iomem(info))
 		ret = fb_read_screen_base(info, buf, count, pos);
 	else
@@ -2327,6 +2330,9 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
 		count = total_size - pos;
 	}
 
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
 	/*
 	 * Copy to framebuffer even if we already logged an error. Emulates
 	 * the behavior of the original fbdev implementation.
-- 
2.38.0

[PATCH 17/21] drm/fb-helper: Perform all fbdev I/O with the same implementation

[Thomas Zimmermann]

Implement the fbdev's read/write helpers with the same functions. Use
the generic fbdev's code as template. Convert all drivers.

DRM's fb helpers must implement regular I/O functionality in struct
fb_ops and possibly perform a damage update. Handle all this in the
same functions and convert drivers. The functionality has been used
as part of the generic fbdev code for some time. The drivers don't
set struct drm_fb_helper.fb_dirty, so they will not be affected by
damage handling.

For I/O memory, fb helpers now provide drm_fb_helper_cfb_read() and
drm_fb_helper_cfb_write(). Several drivers require these. Until now
tegra used I/O read and write, although the memory buffer appears to
be in system memory. So use _sys_ helpers now.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/armada/armada_fbdev.c      |   2 +
 drivers/gpu/drm/drm_fb_helper.c            | 383 ++++++++++++---------
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c  |   2 +
 drivers/gpu/drm/gma500/framebuffer.c       |   2 +
 drivers/gpu/drm/i915/display/intel_fbdev.c |   2 +
 drivers/gpu/drm/radeon/radeon_fb.c         |   2 +
 drivers/gpu/drm/tegra/fb.c                 |   2 +
 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c         |   3 +
 include/drm/drm_fb_helper.h                |  17 +
 9 files changed, 257 insertions(+), 158 deletions(-)

diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c
index f02f6a5ba8320..584cee123bd8e 100644
--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@@ -19,6 +19,8 @@
 static const struct fb_ops armada_fb_ops = {
 	.owner		= THIS_MODULE,
 	DRM_FB_HELPER_DEFAULT_OPS,
+	.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,
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 379e0d2f67198..836523aef6a27 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -747,30 +747,132 @@ void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagerefli
 }
 EXPORT_SYMBOL(drm_fb_helper_deferred_io);
 
+typedef ssize_t (*drm_fb_helper_read_screen)(struct fb_info *info, char __user *buf,
+					     size_t count, loff_t pos);
+
+static ssize_t __drm_fb_helper_read(struct fb_info *info, char __user *buf, size_t count,
+				    loff_t *ppos, drm_fb_helper_read_screen read_screen)
+{
+	loff_t pos = *ppos;
+	size_t total_size;
+	ssize_t ret;
+
+	if (info->screen_size)
+		total_size = info->screen_size;
+	else
+		total_size = info->fix.smem_len;
+
+	if (pos >= total_size)
+		return 0;
+	if (count >= total_size)
+		count = total_size;
+	if (total_size - count < pos)
+		count = total_size - pos;
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+	ret = read_screen(info, buf, count, pos);
+	if (ret > 0)
+		*ppos += ret;
+
+	return ret;
+}
+
+typedef ssize_t (*drm_fb_helper_write_screen)(struct fb_info *info, const char __user *buf,
+					      size_t count, loff_t pos);
+
+static ssize_t __drm_fb_helper_write(struct fb_info *info, const char __user *buf, size_t count,
+				     loff_t *ppos, drm_fb_helper_write_screen write_screen)
+{
+	loff_t pos = *ppos;
+	size_t total_size;
+	ssize_t ret;
+	int err = 0;
+
+	if (info->screen_size)
+		total_size = info->screen_size;
+	else
+		total_size = info->fix.smem_len;
+
+	if (pos > total_size)
+		return -EFBIG;
+	if (count > total_size) {
+		err = -EFBIG;
+		count = total_size;
+	}
+	if (total_size - count < pos) {
+		if (!err)
+			err = -ENOSPC;
+		count = total_size - pos;
+	}
+
+	if (info->fbops->fb_sync)
+		info->fbops->fb_sync(info);
+
+	/*
+	 * Copy to framebuffer even if we already logged an error. Emulates
+	 * the behavior of the original fbdev implementation.
+	 */
+	ret = write_screen(info, buf, count, pos);
+	if (ret < 0)
+		return ret; /* return last error, if any */
+	else if (!ret)
+		return err; /* return previous error, if any */
+
+	*ppos += ret;
+
+	return ret;
+}
+
+static ssize_t drm_fb_helper_read_screen_buffer(struct fb_info *info, char __user *buf,
+						size_t count, loff_t pos)
+{
+	const char *src = info->screen_buffer + pos;
+
+	if (copy_to_user(buf, src, count))
+		return -EFAULT;
+
+	return count;
+}
+
 /**
- * drm_fb_helper_sys_read - wrapper around fb_sys_read
+ * drm_fb_helper_sys_read - Implements struct &fb_ops.fb_read for system memory
  * @info: fb_info struct pointer
  * @buf: userspace buffer to read from framebuffer memory
  * @count: number of bytes to read from framebuffer memory
  * @ppos: read offset within framebuffer memory
  *
- * A wrapper around fb_sys_read implemented by fbdev core
+ * Returns:
+ * The number of read bytes on success, or an error code otherwise.
  */
 ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
 			       size_t count, loff_t *ppos)
 {
-	return fb_sys_read(info, buf, count, ppos);
+	return __drm_fb_helper_read(info, buf, count, ppos, drm_fb_helper_read_screen_buffer);
 }
 EXPORT_SYMBOL(drm_fb_helper_sys_read);
 
+static ssize_t drm_fb_helper_write_screen_buffer(struct fb_info *info, const char __user *buf,
+						 size_t count, loff_t pos)
+{
+	char *dst = info->screen_buffer + pos;
+
+	if (copy_from_user(dst, buf, count))
+		return -EFAULT;
+
+	return count;
+}
+
 /**
- * drm_fb_helper_sys_write - wrapper around fb_sys_write
+ * drm_fb_helper_sys_write - Implements struct &fb_ops.fb_write for system memory
  * @info: fb_info struct pointer
  * @buf: userspace buffer to write to framebuffer memory
  * @count: number of bytes to write to framebuffer memory
  * @ppos: write offset within framebuffer memory
  *
- * A wrapper around fb_sys_write implemented by fbdev core
+ * Returns:
+ * The number of written bytes on success, or an error code otherwise.
  */
 ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 				size_t count, loff_t *ppos)
@@ -779,7 +881,7 @@ ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 	ssize_t ret;
 	struct drm_rect damage_area;
 
-	ret = fb_sys_write(info, buf, count, ppos);
+	ret = __drm_fb_helper_write(info, buf, count, ppos, drm_fb_helper_write_screen_buffer);
 	if (ret <= 0)
 		return ret;
 
@@ -837,6 +939,119 @@ void drm_fb_helper_sys_imageblit(struct fb_info *info,
 }
 EXPORT_SYMBOL(drm_fb_helper_sys_imageblit);
 
+static ssize_t fb_read_screen_base(struct fb_info *info, char __user *buf, size_t count,
+				   loff_t pos)
+{
+	const char __iomem *src = info->screen_base + pos;
+	size_t alloc_size = min_t(size_t, count, PAGE_SIZE);
+	ssize_t ret = 0;
+	int err = 0;
+	char *tmp;
+
+	tmp = kmalloc(alloc_size, GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	while (count) {
+		size_t c = min_t(size_t, count, alloc_size);
+
+		memcpy_fromio(tmp, src, c);
+		if (copy_to_user(buf, tmp, c)) {
+			err = -EFAULT;
+			break;
+		}
+
+		src += c;
+		buf += c;
+		ret += c;
+		count -= c;
+	}
+
+	kfree(tmp);
+
+	return ret ? ret : err;
+}
+
+/**
+ * drm_fb_helper_cfb_read - Implements struct &fb_ops.fb_read for I/O memory
+ * @info: fb_info struct pointer
+ * @buf: userspace buffer to read from framebuffer memory
+ * @count: number of bytes to read from framebuffer memory
+ * @ppos: read offset within framebuffer memory
+ *
+ * Returns:
+ * The number of read bytes on success, or an error code otherwise.
+ */
+ssize_t drm_fb_helper_cfb_read(struct fb_info *info, char __user *buf,
+			       size_t count, loff_t *ppos)
+{
+	return __drm_fb_helper_read(info, buf, count, ppos, fb_read_screen_base);
+}
+EXPORT_SYMBOL(drm_fb_helper_cfb_read);
+
+static ssize_t fb_write_screen_base(struct fb_info *info, const char __user *buf, size_t count,
+				    loff_t pos)
+{
+	char __iomem *dst = info->screen_base + pos;
+	size_t alloc_size = min_t(size_t, count, PAGE_SIZE);
+	ssize_t ret = 0;
+	int err = 0;
+	u8 *tmp;
+
+	tmp = kmalloc(alloc_size, GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	while (count) {
+		size_t c = min_t(size_t, count, alloc_size);
+
+		if (copy_from_user(tmp, buf, c)) {
+			err = -EFAULT;
+			break;
+		}
+		memcpy_toio(dst, tmp, c);
+
+		dst += c;
+		buf += c;
+		ret += c;
+		count -= c;
+	}
+
+	kfree(tmp);
+
+	return ret ? ret : err;
+}
+
+/**
+ * drm_fb_helper_cfb_write - Implements struct &fb_ops.fb_write for I/O memory
+ * @info: fb_info struct pointer
+ * @buf: userspace buffer to write to framebuffer memory
+ * @count: number of bytes to write to framebuffer memory
+ * @ppos: write offset within framebuffer memory
+ *
+ * Returns:
+ * The number of written bytes on success, or an error code otherwise.
+ */
+ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf,
+				size_t count, loff_t *ppos)
+{
+	loff_t pos = *ppos;
+	ssize_t ret;
+	struct drm_rect damage_area;
+
+	ret = __drm_fb_helper_write(info, buf, count, ppos, fb_write_screen_base);
+	if (ret <= 0)
+		return ret;
+
+	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
+
+	return ret;
+}
+EXPORT_SYMBOL(drm_fb_helper_cfb_write);
+
 /**
  * drm_fb_helper_cfb_fillrect - wrapper around cfb_fillrect
  * @info: fbdev registered by the helper
@@ -2183,176 +2398,28 @@ static bool drm_fbdev_use_iomem(struct fb_info *info)
 	return !drm_fbdev_use_shadow_fb(fb_helper) && buffer->map.is_iomem;
 }
 
-static ssize_t fb_read_screen_base(struct fb_info *info, char __user *buf, size_t count,
-				   loff_t pos)
-{
-	const char __iomem *src = info->screen_base + pos;
-	size_t alloc_size = min_t(size_t, count, PAGE_SIZE);
-	ssize_t ret = 0;
-	int err = 0;
-	char *tmp;
-
-	tmp = kmalloc(alloc_size, GFP_KERNEL);
-	if (!tmp)
-		return -ENOMEM;
-
-	while (count) {
-		size_t c = min_t(size_t, count, alloc_size);
-
-		memcpy_fromio(tmp, src, c);
-		if (copy_to_user(buf, tmp, c)) {
-			err = -EFAULT;
-			break;
-		}
-
-		src += c;
-		buf += c;
-		ret += c;
-		count -= c;
-	}
-
-	kfree(tmp);
-
-	return ret ? ret : err;
-}
-
-static ssize_t fb_read_screen_buffer(struct fb_info *info, char __user *buf, size_t count,
-				     loff_t pos)
-{
-	const char *src = info->screen_buffer + pos;
-
-	if (copy_to_user(buf, src, count))
-		return -EFAULT;
-
-	return count;
-}
-
 static ssize_t drm_fbdev_fb_read(struct fb_info *info, char __user *buf,
 				 size_t count, loff_t *ppos)
 {
-	loff_t pos = *ppos;
-	size_t total_size;
 	ssize_t ret;
 
-	if (info->screen_size)
-		total_size = info->screen_size;
-	else
-		total_size = info->fix.smem_len;
-
-	if (pos >= total_size)
-		return 0;
-	if (count >= total_size)
-		count = total_size;
-	if (total_size - count < pos)
-		count = total_size - pos;
-
-	if (info->fbops->fb_sync)
-		info->fbops->fb_sync(info);
-
 	if (drm_fbdev_use_iomem(info))
-		ret = fb_read_screen_base(info, buf, count, pos);
+		ret = drm_fb_helper_cfb_read(info, buf, count, ppos);
 	else
-		ret = fb_read_screen_buffer(info, buf, count, pos);
-
-	if (ret > 0)
-		*ppos += ret;
+		ret = drm_fb_helper_sys_read(info, buf, count, ppos);
 
 	return ret;
 }
 
-static ssize_t fb_write_screen_base(struct fb_info *info, const char __user *buf, size_t count,
-				    loff_t pos)
-{
-	char __iomem *dst = info->screen_base + pos;
-	size_t alloc_size = min_t(size_t, count, PAGE_SIZE);
-	ssize_t ret = 0;
-	int err = 0;
-	u8 *tmp;
-
-	tmp = kmalloc(alloc_size, GFP_KERNEL);
-	if (!tmp)
-		return -ENOMEM;
-
-	while (count) {
-		size_t c = min_t(size_t, count, alloc_size);
-
-		if (copy_from_user(tmp, buf, c)) {
-			err = -EFAULT;
-			break;
-		}
-		memcpy_toio(dst, tmp, c);
-
-		dst += c;
-		buf += c;
-		ret += c;
-		count -= c;
-	}
-
-	kfree(tmp);
-
-	return ret ? ret : err;
-}
-
-static ssize_t fb_write_screen_buffer(struct fb_info *info, const char __user *buf, size_t count,
-				      loff_t pos)
-{
-	char *dst = info->screen_buffer + pos;
-
-	if (copy_from_user(dst, buf, count))
-		return -EFAULT;
-
-	return count;
-}
-
 static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
 				  size_t count, loff_t *ppos)
 {
-	loff_t pos = *ppos;
-	size_t total_size;
 	ssize_t ret;
-	struct drm_rect damage_area;
-	int err = 0;
 
-	if (info->screen_size)
-		total_size = info->screen_size;
-	else
-		total_size = info->fix.smem_len;
-
-	if (pos > total_size)
-		return -EFBIG;
-	if (count > total_size) {
-		err = -EFBIG;
-		count = total_size;
-	}
-	if (total_size - count < pos) {
-		if (!err)
-			err = -ENOSPC;
-		count = total_size - pos;
-	}
-
-	if (info->fbops->fb_sync)
-		info->fbops->fb_sync(info);
-
-	/*
-	 * Copy to framebuffer even if we already logged an error. Emulates
-	 * the behavior of the original fbdev implementation.
-	 */
 	if (drm_fbdev_use_iomem(info))
-		ret = fb_write_screen_base(info, buf, count, pos);
+		ret = drm_fb_helper_cfb_write(info, buf, count, ppos);
 	else
-		ret = fb_write_screen_buffer(info, buf, count, pos);
-
-	if (ret < 0)
-		return ret; /* return last error, if any */
-	else if (!ret)
-		return err; /* return previous error, if any */
-
-	*ppos += ret;
-
-	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
-	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
-			     drm_rect_width(&damage_area),
-			     drm_rect_height(&damage_area));
+		ret = drm_fb_helper_sys_write(info, buf, count, ppos);
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 86c489d945849..55c92372fca04 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -49,6 +49,8 @@ static const struct fb_ops exynos_drm_fb_ops = {
 	.owner		= THIS_MODULE,
 	DRM_FB_HELPER_DEFAULT_OPS,
 	.fb_mmap        = exynos_drm_fb_mmap,
+	.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,
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index bee4ce24904f6..53298674b7ed8 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -147,6 +147,8 @@ static const struct fb_ops psbfb_unaccel_ops = {
 	.owner = THIS_MODULE,
 	DRM_FB_HELPER_DEFAULT_OPS,
 	.fb_setcolreg = psbfb_setcolreg,
+	.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,
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 0ac78b9718684..d63b066e8ac70 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -124,6 +124,8 @@ static const struct fb_ops intelfb_ops = {
 	.owner = THIS_MODULE,
 	DRM_FB_HELPER_DEFAULT_OPS,
 	.fb_set_par = intel_fbdev_set_par,
+	.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,
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index 936df79decc57..8717423195f4c 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -80,6 +80,8 @@ static const struct fb_ops radeonfb_ops = {
 	DRM_FB_HELPER_DEFAULT_OPS,
 	.fb_open = radeonfb_open,
 	.fb_release = radeonfb_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,
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 30fac20665f4e..071be48390880 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -206,6 +206,8 @@ static int tegra_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 static const struct fb_ops tegra_fb_ops = {
 	.owner = THIS_MODULE,
 	DRM_FB_HELPER_DEFAULT_OPS,
+	.fb_read = drm_fb_helper_sys_read,
+	.fb_write = drm_fb_helper_sys_write,
 	.fb_fillrect = drm_fb_helper_sys_fillrect,
 	.fb_copyarea = drm_fb_helper_sys_copyarea,
 	.fb_imageblit = drm_fb_helper_sys_imageblit,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
index 5b85b477e4c69..0f2e3e6e97864 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -29,6 +29,7 @@
 #include <linux/fb.h>
 #include <linux/pci.h>
 
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/ttm/ttm_placement.h>
 
@@ -611,6 +612,8 @@ static int vmw_fb_set_par(struct fb_info *info)
 
 static const struct fb_ops vmw_fb_ops = {
 	.owner = THIS_MODULE,
+	.fb_read = drm_fb_helper_sys_read,
+	.fb_write = drm_fb_helper_sys_write,
 	.fb_check_var = vmw_fb_check_var,
 	.fb_set_par = vmw_fb_set_par,
 	.fb_setcolreg = vmw_fb_setcolreg,
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 3d7a3d68dab8a..6581183618b89 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -257,6 +257,11 @@ void drm_fb_helper_sys_copyarea(struct fb_info *info,
 void drm_fb_helper_sys_imageblit(struct fb_info *info,
 				 const struct fb_image *image);
 
+ssize_t drm_fb_helper_cfb_read(struct fb_info *info, char __user *buf,
+			       size_t count, loff_t *ppos);
+ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf,
+				size_t count, loff_t *ppos);
+
 void drm_fb_helper_cfb_fillrect(struct fb_info *info,
 				const struct fb_fillrect *rect);
 void drm_fb_helper_cfb_copyarea(struct fb_info *info,
@@ -402,6 +407,18 @@ static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,
 {
 }
 
+static inline ssize_t drm_fb_helper_cfb_read(struct fb_info *info, char __user *buf,
+					     size_t count, loff_t *ppos)
+{
+	return -ENODEV;
+}
+
+static inline ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf,
+					      size_t count, loff_t *ppos)
+{
+	return -ENODEV;
+}
+
 static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,
 					      const struct fb_fillrect *rect)
 {
-- 
2.38.0

[PATCH 18/21] drm/fb_helper: Minimize damage-helper overhead

[Thomas Zimmermann]

Pull the test for fb_dirty into the caller to avoid extra work
if no callback has been set. In this case no damage handling is
required and no damage area needs to be computed. Print a warning
if the damage worker runs without getting an fb_dirty callback.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/drm_fb_helper.c | 90 ++++++++++++++++++++++-----------
 1 file changed, 60 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 836523aef6a27..fbc5c5445fdb0 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -449,12 +449,13 @@ static int drm_fb_helper_damage_blit(struct drm_fb_helper *fb_helper,
 static void drm_fb_helper_damage_work(struct work_struct *work)
 {
 	struct drm_fb_helper *helper = container_of(work, struct drm_fb_helper, damage_work);
+	struct drm_device *dev = helper->dev;
 	struct drm_clip_rect *clip = &helper->damage_clip;
 	struct drm_clip_rect clip_copy;
 	unsigned long flags;
 	int ret;
 
-	if (!helper->funcs->fb_dirty)
+	if (drm_WARN_ON_ONCE(dev, !helper->funcs->fb_dirty))
 		return;
 
 	spin_lock_irqsave(&helper->damage_lock, flags);
@@ -659,16 +660,12 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
 }
 EXPORT_SYMBOL(drm_fb_helper_fini);
 
-static void drm_fb_helper_damage(struct fb_info *info, u32 x, u32 y,
+static void drm_fb_helper_damage(struct drm_fb_helper *helper, u32 x, u32 y,
 				 u32 width, u32 height)
 {
-	struct drm_fb_helper *helper = info->par;
 	struct drm_clip_rect *clip = &helper->damage_clip;
 	unsigned long flags;
 
-	if (!helper->funcs->fb_dirty)
-		return;
-
 	spin_lock_irqsave(&helper->damage_lock, flags);
 	clip->x1 = min_t(u32, clip->x1, x);
 	clip->y1 = min_t(u32, clip->y1, y);
@@ -718,6 +715,7 @@ static void drm_fb_helper_memory_range_to_clip(struct fb_info *info, off_t off,
  */
 void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagereflist)
 {
+	struct drm_fb_helper *helper = info->par;
 	unsigned long start, end, min_off, max_off;
 	struct fb_deferred_io_pageref *pageref;
 	struct drm_rect damage_area;
@@ -733,17 +731,19 @@ void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagerefli
 	if (min_off >= max_off)
 		return;
 
-	/*
-	 * As we can only track pages, we might reach beyond the end
-	 * of the screen and account for non-existing scanlines. Hence,
-	 * keep the covered memory area within the screen buffer.
-	 */
-	max_off = min(max_off, info->screen_size);
+	if (helper->funcs->fb_dirty) {
+		/*
+		 * As we can only track pages, we might reach beyond the end
+		 * of the screen and account for non-existing scanlines. Hence,
+		 * keep the covered memory area within the screen buffer.
+		 */
+		max_off = min(max_off, info->screen_size);
 
-	drm_fb_helper_memory_range_to_clip(info, min_off, max_off - min_off, &damage_area);
-	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
-			     drm_rect_width(&damage_area),
-			     drm_rect_height(&damage_area));
+		drm_fb_helper_memory_range_to_clip(info, min_off, max_off - min_off, &damage_area);
+		drm_fb_helper_damage(helper, damage_area.x1, damage_area.y1,
+				     drm_rect_width(&damage_area),
+				     drm_rect_height(&damage_area));
+	}
 }
 EXPORT_SYMBOL(drm_fb_helper_deferred_io);
 
@@ -877,6 +877,7 @@ static ssize_t drm_fb_helper_write_screen_buffer(struct fb_info *info, const cha
 ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
+	struct drm_fb_helper *helper = info->par;
 	loff_t pos = *ppos;
 	ssize_t ret;
 	struct drm_rect damage_area;
@@ -885,10 +886,12 @@ ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 	if (ret <= 0)
 		return ret;
 
-	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
-	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
-			     drm_rect_width(&damage_area),
-			     drm_rect_height(&damage_area));
+	if (helper->funcs->fb_dirty) {
+		drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+		drm_fb_helper_damage(helper, damage_area.x1, damage_area.y1,
+				     drm_rect_width(&damage_area),
+				     drm_rect_height(&damage_area));
+	}
 
 	return ret;
 }
@@ -904,8 +907,12 @@ EXPORT_SYMBOL(drm_fb_helper_sys_write);
 void drm_fb_helper_sys_fillrect(struct fb_info *info,
 				const struct fb_fillrect *rect)
 {
+	struct drm_fb_helper *helper = info->par;
+
 	sys_fillrect(info, rect);
-	drm_fb_helper_damage(info, rect->dx, rect->dy, rect->width, rect->height);
+
+	if (helper->funcs->fb_dirty)
+		drm_fb_helper_damage(helper, rect->dx, rect->dy, rect->width, rect->height);
 }
 EXPORT_SYMBOL(drm_fb_helper_sys_fillrect);
 
@@ -919,8 +926,12 @@ EXPORT_SYMBOL(drm_fb_helper_sys_fillrect);
 void drm_fb_helper_sys_copyarea(struct fb_info *info,
 				const struct fb_copyarea *area)
 {
+	struct drm_fb_helper *helper = info->par;
+
 	sys_copyarea(info, area);
-	drm_fb_helper_damage(info, area->dx, area->dy, area->width, area->height);
+
+	if (helper->funcs->fb_dirty)
+		drm_fb_helper_damage(helper, area->dx, area->dy, area->width, area->height);
 }
 EXPORT_SYMBOL(drm_fb_helper_sys_copyarea);
 
@@ -934,8 +945,12 @@ EXPORT_SYMBOL(drm_fb_helper_sys_copyarea);
 void drm_fb_helper_sys_imageblit(struct fb_info *info,
 				 const struct fb_image *image)
 {
+	struct drm_fb_helper *helper = info->par;
+
 	sys_imageblit(info, image);
-	drm_fb_helper_damage(info, image->dx, image->dy, image->width, image->height);
+
+	if (helper->funcs->fb_dirty)
+		drm_fb_helper_damage(helper, image->dx, image->dy, image->width, image->height);
 }
 EXPORT_SYMBOL(drm_fb_helper_sys_imageblit);
 
@@ -1035,6 +1050,7 @@ static ssize_t fb_write_screen_base(struct fb_info *info, const char __user *buf
 ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
+	struct drm_fb_helper *helper = info->par;
 	loff_t pos = *ppos;
 	ssize_t ret;
 	struct drm_rect damage_area;
@@ -1043,10 +1059,12 @@ ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf,
 	if (ret <= 0)
 		return ret;
 
-	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
-	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
-			     drm_rect_width(&damage_area),
-			     drm_rect_height(&damage_area));
+	if (helper->funcs->fb_dirty) {
+		drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+		drm_fb_helper_damage(helper, damage_area.x1, damage_area.y1,
+				     drm_rect_width(&damage_area),
+				     drm_rect_height(&damage_area));
+	}
 
 	return ret;
 }
@@ -1062,8 +1080,12 @@ EXPORT_SYMBOL(drm_fb_helper_cfb_write);
 void drm_fb_helper_cfb_fillrect(struct fb_info *info,
 				const struct fb_fillrect *rect)
 {
+	struct drm_fb_helper *helper = info->par;
+
 	cfb_fillrect(info, rect);
-	drm_fb_helper_damage(info, rect->dx, rect->dy, rect->width, rect->height);
+
+	if (helper->funcs->fb_dirty)
+		drm_fb_helper_damage(helper, rect->dx, rect->dy, rect->width, rect->height);
 }
 EXPORT_SYMBOL(drm_fb_helper_cfb_fillrect);
 
@@ -1077,8 +1099,12 @@ EXPORT_SYMBOL(drm_fb_helper_cfb_fillrect);
 void drm_fb_helper_cfb_copyarea(struct fb_info *info,
 				const struct fb_copyarea *area)
 {
+	struct drm_fb_helper *helper = info->par;
+
 	cfb_copyarea(info, area);
-	drm_fb_helper_damage(info, area->dx, area->dy, area->width, area->height);
+
+	if (helper->funcs->fb_dirty)
+		drm_fb_helper_damage(helper, area->dx, area->dy, area->width, area->height);
 }
 EXPORT_SYMBOL(drm_fb_helper_cfb_copyarea);
 
@@ -1092,8 +1118,12 @@ EXPORT_SYMBOL(drm_fb_helper_cfb_copyarea);
 void drm_fb_helper_cfb_imageblit(struct fb_info *info,
 				 const struct fb_image *image)
 {
+	struct drm_fb_helper *helper = info->par;
+
 	cfb_imageblit(info, image);
-	drm_fb_helper_damage(info, image->dx, image->dy, image->width, image->height);
+
+	if (helper->funcs->fb_dirty)
+		drm_fb_helper_damage(helper, image->dx, image->dy, image->width, image->height);
 }
 EXPORT_SYMBOL(drm_fb_helper_cfb_imageblit);
 
-- 
2.38.0

[PATCH 19/21] drm/fb-helper: Always initialize generic fbdev emulation

[Thomas Zimmermann]

Initialize the generic fbdev emulation even if it has been disabled
on the kernel command line. The hotplug and mode initialization will
fail accordingly.

The kernel parameter can still be changed at runtime and the emulation
will initialize after hotplugging the connector.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/drm_fb_helper.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index fbc5c5445fdb0..d1afb420c6e06 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -526,11 +526,6 @@ int drm_fb_helper_init(struct drm_device *dev,
 {
 	int ret;
 
-	if (!drm_fbdev_emulation) {
-		dev->fb_helper = fb_helper;
-		return 0;
-	}
-
 	/*
 	 * If this is not the generic fbdev client, initialize a drm_client
 	 * without callbacks so we can use the modesets.
@@ -2716,9 +2711,6 @@ void drm_fbdev_generic_setup(struct drm_device *dev,
 	drm_WARN(dev, !dev->registered, "Device has not been registered.\n");
 	drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n");
 
-	if (!drm_fbdev_emulation)
-		return;
-
 	fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
 	if (!fb_helper) {
 		drm_err(dev, "Failed to allocate fb_helper\n");
-- 
2.38.0

[PATCH 20/21] drm/fb-helper: Move generic fbdev emulation into separate source file

[Thomas Zimmermann]

Move the generic fbdev implementation into its own source and header
file. Adapt drivers. No functonal changes, but some of the internal
helpers have been renamed to fit into the drm_fbdev_ naming scheme.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/Makefile                      |   2 +-
 .../gpu/drm/arm/display/komeda/komeda_drv.c   |   2 +-
 drivers/gpu/drm/arm/hdlcd_drv.c               |   2 +-
 drivers/gpu/drm/arm/malidp_drv.c              |   2 +-
 drivers/gpu/drm/aspeed/aspeed_gfx_drv.c       |   2 +-
 drivers/gpu/drm/ast/ast_drv.c                 |   1 +
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c  |   2 +-
 drivers/gpu/drm/drm_fb_helper.c               | 517 +-----------------
 drivers/gpu/drm/drm_fbdev.c                   | 512 +++++++++++++++++
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c     |   2 +-
 drivers/gpu/drm/gud/gud_drv.c                 |   2 +-
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c   |   1 +
 .../gpu/drm/hisilicon/kirin/kirin_drm_drv.c   |   2 +-
 drivers/gpu/drm/hyperv/hyperv_drm_drv.c       |   2 +-
 drivers/gpu/drm/imx/dcss/dcss-kms.c           |   2 +-
 drivers/gpu/drm/imx/imx-drm-core.c            |   2 +-
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c     |   2 +-
 drivers/gpu/drm/kmb/kmb_drv.c                 |   2 +-
 drivers/gpu/drm/logicvc/logicvc_drm.c         |   2 +-
 drivers/gpu/drm/mcde/mcde_drv.c               |   2 +-
 drivers/gpu/drm/mediatek/mtk_drm_drv.c        |   2 +-
 drivers/gpu/drm/meson/meson_drv.c             |   2 +-
 drivers/gpu/drm/mgag200/mgag200_drv.c         |   1 +
 drivers/gpu/drm/mxsfb/lcdif_drv.c             |   2 +-
 drivers/gpu/drm/mxsfb/mxsfb_drv.c             |   2 +-
 drivers/gpu/drm/panel/panel-ilitek-ili9341.c  |   2 +-
 drivers/gpu/drm/pl111/pl111_drv.c             |   2 +-
 drivers/gpu/drm/qxl/qxl_drv.c                 |   1 +
 drivers/gpu/drm/rcar-du/rcar_du_drv.c         |   2 +-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |   2 +-
 drivers/gpu/drm/solomon/ssd130x.c             |   2 +-
 drivers/gpu/drm/sti/sti_drv.c                 |   2 +-
 drivers/gpu/drm/stm/drv.c                     |   2 +-
 drivers/gpu/drm/sun4i/sun4i_drv.c             |   2 +-
 drivers/gpu/drm/tidss/tidss_drv.c             |   2 +-
 drivers/gpu/drm/tilcdc/tilcdc_drv.c           |   2 +-
 drivers/gpu/drm/tiny/arcpgu.c                 |   2 +-
 drivers/gpu/drm/tiny/bochs.c                  |   2 +-
 drivers/gpu/drm/tiny/cirrus.c                 |   2 +-
 drivers/gpu/drm/tiny/gm12u320.c               |   2 +-
 drivers/gpu/drm/tiny/hx8357d.c                |   2 +-
 drivers/gpu/drm/tiny/ili9163.c                |   2 +-
 drivers/gpu/drm/tiny/ili9225.c                |   2 +-
 drivers/gpu/drm/tiny/ili9341.c                |   2 +-
 drivers/gpu/drm/tiny/ili9486.c                |   2 +-
 drivers/gpu/drm/tiny/mi0283qt.c               |   2 +-
 drivers/gpu/drm/tiny/ofdrm.c                  |   2 +-
 drivers/gpu/drm/tiny/panel-mipi-dbi.c         |   2 +-
 drivers/gpu/drm/tiny/repaper.c                |   2 +-
 drivers/gpu/drm/tiny/simpledrm.c              |   2 +-
 drivers/gpu/drm/tiny/st7586.c                 |   2 +-
 drivers/gpu/drm/tiny/st7735r.c                |   2 +-
 drivers/gpu/drm/tve200/tve200_drv.c           |   2 +-
 drivers/gpu/drm/udl/udl_drv.c                 |   2 +-
 drivers/gpu/drm/vboxvideo/vbox_drv.c          |   2 +-
 drivers/gpu/drm/vc4/vc4_drv.c                 |   2 +-
 drivers/gpu/drm/virtio/virtgpu_drv.c          |   1 +
 drivers/gpu/drm/vkms/vkms_drv.c               |   2 +-
 drivers/gpu/drm/xlnx/zynqmp_dpsub.c           |   2 +-
 include/drm/drm_fb_helper.h                   |   9 -
 include/drm/drm_fbdev.h                       |  15 +
 61 files changed, 586 insertions(+), 576 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_fbdev.c
 create mode 100644 include/drm/drm_fbdev.h

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 6ad98d3ceff76..beffde597ff68 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -115,7 +115,7 @@ drm_kms_helper-y := \
 	drm_self_refresh_helper.o \
 	drm_simple_kms_helper.o
 drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
-drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
+drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fbdev.o drm_fb_helper.o
 obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
 
 #
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
index 9fce4239d4ad4..9124d9e3f4e71 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
@@ -9,7 +9,7 @@
 #include <linux/platform_device.h>
 #include <linux/component.h>
 #include <linux/pm_runtime.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include "komeda_dev.h"
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index a032003c340cc..fddcef0c373e0 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -26,7 +26,7 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_debugfs.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_modeset_helper.h>
diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index 1d0b0c54ccc74..7665b651bbc59 100644
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -19,7 +19,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
index a94f1a9e8f409..fa2fec7940b23 100644
--- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
+++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
@@ -16,7 +16,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_device.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c
index bbeb5defc8f5c..44f5da586dad1 100644
--- a/drivers/gpu/drm/ast/ast_drv.c
+++ b/drivers/gpu/drm/ast/ast_drv.c
@@ -33,6 +33,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index f7e7f4e919c77..3d3e3dee7d8ec 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -19,7 +19,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index d1afb420c6e06..f52a90263ac36 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -30,24 +30,17 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/console.h>
-#include <linux/dma-buf.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/sysrq.h>
-#include <linux/vmalloc.h>
 
 #include <drm/drm_atomic.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
+#include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_print.h>
 #include <drm/drm_vblank.h>
 
-#include "drm_crtc_helper_internal.h"
 #include "drm_internal.h"
 
 static bool drm_fbdev_emulation = true;
@@ -61,25 +54,6 @@ MODULE_PARM_DESC(drm_fbdev_overalloc,
 		 "Overallocation of the fbdev buffer (%) [default="
 		 __MODULE_STRING(CONFIG_DRM_FBDEV_OVERALLOC) "]");
 
-/*
- * In order to keep user-space compatibility, we want in certain use-cases
- * to keep leaking the fbdev physical address to the user-space program
- * handling the fbdev buffer.
- * This is a bad habit essentially kept into closed source opengl driver
- * that should really be moved into open-source upstream projects instead
- * of using legacy physical addresses in user space to communicate with
- * other out-of-tree kernel modules.
- *
- * This module_param *should* be removed as soon as possible and be
- * considered as a broken and legacy behaviour from a modern fbdev device.
- */
-#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
-static bool drm_leak_fbdev_smem = false;
-module_param_unsafe(drm_leak_fbdev_smem, bool, 0600);
-MODULE_PARM_DESC(drm_leak_fbdev_smem,
-		 "Allow unsafe leaking fbdev physical smem address [default=false]");
-#endif
-
 static LIST_HEAD(kernel_fb_helper_list);
 static DEFINE_MUTEX(kernel_fb_helper_lock);
 
@@ -372,80 +346,6 @@ static void drm_fb_helper_resume_worker(struct work_struct *work)
 	console_unlock();
 }
 
-static void drm_fb_helper_damage_blit_real(struct drm_fb_helper *fb_helper,
-					   struct drm_clip_rect *clip,
-					   struct iosys_map *dst)
-{
-	struct drm_framebuffer *fb = fb_helper->fb;
-	size_t offset = clip->y1 * fb->pitches[0];
-	size_t len = clip->x2 - clip->x1;
-	unsigned int y;
-	void *src;
-
-	switch (drm_format_info_bpp(fb->format, 0)) {
-	case 1:
-		offset += clip->x1 / 8;
-		len = DIV_ROUND_UP(len + clip->x1 % 8, 8);
-		break;
-	case 2:
-		offset += clip->x1 / 4;
-		len = DIV_ROUND_UP(len + clip->x1 % 4, 4);
-		break;
-	case 4:
-		offset += clip->x1 / 2;
-		len = DIV_ROUND_UP(len + clip->x1 % 2, 2);
-		break;
-	default:
-		offset += clip->x1 * fb->format->cpp[0];
-		len *= fb->format->cpp[0];
-		break;
-	}
-
-	src = fb_helper->info->screen_buffer + offset;
-	iosys_map_incr(dst, offset); /* go to first pixel within clip rect */
-
-	for (y = clip->y1; y < clip->y2; y++) {
-		iosys_map_memcpy_to(dst, 0, src, len);
-		iosys_map_incr(dst, fb->pitches[0]);
-		src += fb->pitches[0];
-	}
-}
-
-static int drm_fb_helper_damage_blit(struct drm_fb_helper *fb_helper,
-				     struct drm_clip_rect *clip)
-{
-	struct drm_client_buffer *buffer = fb_helper->buffer;
-	struct iosys_map map, dst;
-	int ret;
-
-	/*
-	 * We have to pin the client buffer to its current location while
-	 * flushing the shadow buffer. In the general case, concurrent
-	 * modesetting operations could try to move the buffer and would
-	 * fail. The modeset has to be serialized by acquiring the reservation
-	 * object of the underlying BO here.
-	 *
-	 * For fbdev emulation, we only have to protect against fbdev modeset
-	 * operations. Nothing else will involve the client buffer's BO. So it
-	 * is sufficient to acquire struct drm_fb_helper.lock here.
-	 */
-	mutex_lock(&fb_helper->lock);
-
-	ret = drm_client_buffer_vmap(buffer, &map);
-	if (ret)
-		goto out;
-
-	dst = map;
-	drm_fb_helper_damage_blit_real(fb_helper, clip, &dst);
-
-	drm_client_buffer_vunmap(buffer);
-
-out:
-	mutex_unlock(&fb_helper->lock);
-
-	return ret;
-}
-
 static void drm_fb_helper_damage_work(struct work_struct *work)
 {
 	struct drm_fb_helper *helper = container_of(work, struct drm_fb_helper, damage_work);
@@ -2322,423 +2222,10 @@ EXPORT_SYMBOL(drm_fb_helper_lastclose);
  *
  * This function can be used as the
  * &drm_mode_config_funcs.output_poll_changed callback for drivers that only
- * need to call drm_fb_helper_hotplug_event().
+ * need to call drm_fbdev.hotplug_event().
  */
 void drm_fb_helper_output_poll_changed(struct drm_device *dev)
 {
 	drm_fb_helper_hotplug_event(dev->fb_helper);
 }
 EXPORT_SYMBOL(drm_fb_helper_output_poll_changed);
-
-static bool drm_fbdev_use_shadow_fb(struct drm_fb_helper *fb_helper)
-{
-	struct drm_device *dev = fb_helper->dev;
-	struct drm_framebuffer *fb = fb_helper->fb;
-
-	return dev->mode_config.prefer_shadow_fbdev ||
-	       dev->mode_config.prefer_shadow ||
-	       fb->funcs->dirty;
-}
-
-/* @user: 1=userspace, 0=fbcon */
-static int drm_fbdev_fb_open(struct fb_info *info, int user)
-{
-	struct drm_fb_helper *fb_helper = info->par;
-
-	/* No need to take a ref for fbcon because it unbinds on unregister */
-	if (user && !try_module_get(fb_helper->dev->driver->fops->owner))
-		return -ENODEV;
-
-	return 0;
-}
-
-static int drm_fbdev_fb_release(struct fb_info *info, int user)
-{
-	struct drm_fb_helper *fb_helper = info->par;
-
-	if (user)
-		module_put(fb_helper->dev->driver->fops->owner);
-
-	return 0;
-}
-
-static void drm_fbdev_cleanup(struct drm_fb_helper *fb_helper)
-{
-	struct fb_info *fbi = fb_helper->info;
-	void *shadow = NULL;
-
-	if (!fb_helper->dev)
-		return;
-
-	if (fbi) {
-		if (fbi->fbdefio)
-			fb_deferred_io_cleanup(fbi);
-		if (drm_fbdev_use_shadow_fb(fb_helper))
-			shadow = fbi->screen_buffer;
-	}
-
-	drm_fb_helper_fini(fb_helper);
-
-	if (shadow)
-		vfree(shadow);
-	else if (fb_helper->buffer)
-		drm_client_buffer_vunmap(fb_helper->buffer);
-
-	drm_client_framebuffer_delete(fb_helper->buffer);
-}
-
-static void drm_fbdev_release(struct drm_fb_helper *fb_helper)
-{
-	drm_fbdev_cleanup(fb_helper);
-	drm_client_release(&fb_helper->client);
-	kfree(fb_helper);
-}
-
-/*
- * fb_ops.fb_destroy is called by the last put_fb_info() call at the end of
- * unregister_framebuffer() or fb_release().
- */
-static void drm_fbdev_fb_destroy(struct fb_info *info)
-{
-	drm_fbdev_release(info->par);
-}
-
-static int drm_fbdev_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
-{
-	struct drm_fb_helper *fb_helper = info->par;
-
-	if (drm_fbdev_use_shadow_fb(fb_helper))
-		return fb_deferred_io_mmap(info, vma);
-	else if (fb_helper->dev->driver->gem_prime_mmap)
-		return fb_helper->dev->driver->gem_prime_mmap(fb_helper->buffer->gem, vma);
-	else
-		return -ENODEV;
-}
-
-static bool drm_fbdev_use_iomem(struct fb_info *info)
-{
-	struct drm_fb_helper *fb_helper = info->par;
-	struct drm_client_buffer *buffer = fb_helper->buffer;
-
-	return !drm_fbdev_use_shadow_fb(fb_helper) && buffer->map.is_iomem;
-}
-
-static ssize_t drm_fbdev_fb_read(struct fb_info *info, char __user *buf,
-				 size_t count, loff_t *ppos)
-{
-	ssize_t ret;
-
-	if (drm_fbdev_use_iomem(info))
-		ret = drm_fb_helper_cfb_read(info, buf, count, ppos);
-	else
-		ret = drm_fb_helper_sys_read(info, buf, count, ppos);
-
-	return ret;
-}
-
-static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
-				  size_t count, loff_t *ppos)
-{
-	ssize_t ret;
-
-	if (drm_fbdev_use_iomem(info))
-		ret = drm_fb_helper_cfb_write(info, buf, count, ppos);
-	else
-		ret = drm_fb_helper_sys_write(info, buf, count, ppos);
-
-	return ret;
-}
-
-static void drm_fbdev_fb_fillrect(struct fb_info *info,
-				  const struct fb_fillrect *rect)
-{
-	if (drm_fbdev_use_iomem(info))
-		drm_fb_helper_cfb_fillrect(info, rect);
-	else
-		drm_fb_helper_sys_fillrect(info, rect);
-}
-
-static void drm_fbdev_fb_copyarea(struct fb_info *info,
-				  const struct fb_copyarea *area)
-{
-	if (drm_fbdev_use_iomem(info))
-		drm_fb_helper_cfb_copyarea(info, area);
-	else
-		drm_fb_helper_sys_copyarea(info, area);
-}
-
-static void drm_fbdev_fb_imageblit(struct fb_info *info,
-				   const struct fb_image *image)
-{
-	if (drm_fbdev_use_iomem(info))
-		drm_fb_helper_cfb_imageblit(info, image);
-	else
-		drm_fb_helper_sys_imageblit(info, image);
-}
-
-static const struct fb_ops drm_fbdev_fb_ops = {
-	.owner		= THIS_MODULE,
-	DRM_FB_HELPER_DEFAULT_OPS,
-	.fb_open	= drm_fbdev_fb_open,
-	.fb_release	= drm_fbdev_fb_release,
-	.fb_destroy	= drm_fbdev_fb_destroy,
-	.fb_mmap	= drm_fbdev_fb_mmap,
-	.fb_read	= drm_fbdev_fb_read,
-	.fb_write	= drm_fbdev_fb_write,
-	.fb_fillrect	= drm_fbdev_fb_fillrect,
-	.fb_copyarea	= drm_fbdev_fb_copyarea,
-	.fb_imageblit	= drm_fbdev_fb_imageblit,
-};
-
-static struct fb_deferred_io drm_fbdev_defio = {
-	.delay		= HZ / 20,
-	.deferred_io	= drm_fb_helper_deferred_io,
-};
-
-/*
- * This function uses the client API to create a framebuffer backed by a dumb buffer.
- *
- * The _sys_ versions are used for &fb_ops.fb_read, fb_write, fb_fillrect,
- * fb_copyarea, fb_imageblit.
- */
-static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
-				       struct drm_fb_helper_surface_size *sizes)
-{
-	struct drm_client_dev *client = &fb_helper->client;
-	struct drm_device *dev = fb_helper->dev;
-	struct drm_client_buffer *buffer;
-	struct drm_framebuffer *fb;
-	struct fb_info *fbi;
-	u32 format;
-	struct iosys_map map;
-	int ret;
-
-	drm_dbg_kms(dev, "surface width(%d), height(%d) and bpp(%d)\n",
-		    sizes->surface_width, sizes->surface_height,
-		    sizes->surface_bpp);
-
-	format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
-	buffer = drm_client_framebuffer_create(client, sizes->surface_width,
-					       sizes->surface_height, format);
-	if (IS_ERR(buffer))
-		return PTR_ERR(buffer);
-
-	fb_helper->buffer = buffer;
-	fb_helper->fb = buffer->fb;
-	fb = buffer->fb;
-
-	fbi = drm_fb_helper_alloc_info(fb_helper);
-	if (IS_ERR(fbi))
-		return PTR_ERR(fbi);
-
-	fbi->fbops = &drm_fbdev_fb_ops;
-	fbi->screen_size = sizes->surface_height * fb->pitches[0];
-	fbi->fix.smem_len = fbi->screen_size;
-	fbi->flags = FBINFO_DEFAULT;
-
-	drm_fb_helper_fill_info(fbi, fb_helper, sizes);
-
-	if (drm_fbdev_use_shadow_fb(fb_helper)) {
-		fbi->screen_buffer = vzalloc(fbi->screen_size);
-		if (!fbi->screen_buffer)
-			return -ENOMEM;
-		fbi->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
-
-		fbi->fbdefio = &drm_fbdev_defio;
-		fb_deferred_io_init(fbi);
-	} else {
-		/* buffer is mapped for HW framebuffer */
-		ret = drm_client_buffer_vmap(fb_helper->buffer, &map);
-		if (ret)
-			return ret;
-		if (map.is_iomem) {
-			fbi->screen_base = map.vaddr_iomem;
-		} else {
-			fbi->screen_buffer = map.vaddr;
-			fbi->flags |= FBINFO_VIRTFB;
-		}
-
-		/*
-		 * Shamelessly leak the physical address to user-space. As
-		 * page_to_phys() is undefined for I/O memory, warn in this
-		 * case.
-		 */
-#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
-		if (drm_leak_fbdev_smem && fbi->fix.smem_start == 0 &&
-		    !drm_WARN_ON_ONCE(dev, map.is_iomem))
-			fbi->fix.smem_start =
-				page_to_phys(virt_to_page(fbi->screen_buffer));
-#endif
-	}
-
-	return 0;
-}
-
-static int drm_fbdev_fb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
-{
-	struct drm_device *dev = helper->dev;
-	int ret;
-
-	if (!drm_fbdev_use_shadow_fb(helper))
-		return 0;
-
-	/* Call damage handlers only if necessary */
-	if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
-		return 0;
-
-	if (helper->buffer) {
-		ret = drm_fb_helper_damage_blit(helper, clip);
-		if (drm_WARN_ONCE(dev, ret, "Damage blitter failed: ret=%d\n", ret))
-			return ret;
-	}
-
-	if (helper->fb->funcs->dirty) {
-		ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
-		if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret))
-			return ret;
-	}
-
-	return 0;
-}
-
-static const struct drm_fb_helper_funcs drm_fb_helper_generic_funcs = {
-	.fb_probe = drm_fb_helper_generic_probe,
-	.fb_dirty = drm_fbdev_fb_dirty,
-};
-
-static void drm_fbdev_client_unregister(struct drm_client_dev *client)
-{
-	struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
-
-	if (fb_helper->info)
-		/* drm_fbdev_fb_destroy() takes care of cleanup */
-		drm_fb_helper_unregister_info(fb_helper);
-	else
-		drm_fbdev_release(fb_helper);
-}
-
-static int drm_fbdev_client_restore(struct drm_client_dev *client)
-{
-	drm_fb_helper_lastclose(client->dev);
-
-	return 0;
-}
-
-static int drm_fbdev_client_hotplug(struct drm_client_dev *client)
-{
-	struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
-	struct drm_device *dev = client->dev;
-	int ret;
-
-	/* Setup is not retried if it has failed */
-	if (!fb_helper->dev && fb_helper->funcs)
-		return 0;
-
-	if (dev->fb_helper)
-		return drm_fb_helper_hotplug_event(dev->fb_helper);
-
-	if (!dev->mode_config.num_connector) {
-		drm_dbg_kms(dev, "No connectors found, will not create framebuffer!\n");
-		return 0;
-	}
-
-	drm_fb_helper_prepare(dev, fb_helper, &drm_fb_helper_generic_funcs);
-
-	ret = drm_fb_helper_init(dev, fb_helper);
-	if (ret)
-		goto err;
-
-	if (!drm_drv_uses_atomic_modeset(dev))
-		drm_helper_disable_unused_functions(dev);
-
-	ret = drm_fb_helper_initial_config(fb_helper, fb_helper->preferred_bpp);
-	if (ret)
-		goto err_cleanup;
-
-	return 0;
-
-err_cleanup:
-	drm_fbdev_cleanup(fb_helper);
-err:
-	fb_helper->dev = NULL;
-	fb_helper->info = NULL;
-
-	drm_err(dev, "fbdev: Failed to setup generic emulation (ret=%d)\n", ret);
-
-	return ret;
-}
-
-static const struct drm_client_funcs drm_fbdev_client_funcs = {
-	.owner		= THIS_MODULE,
-	.unregister	= drm_fbdev_client_unregister,
-	.restore	= drm_fbdev_client_restore,
-	.hotplug	= drm_fbdev_client_hotplug,
-};
-
-/**
- * drm_fbdev_generic_setup() - Setup generic fbdev emulation
- * @dev: DRM device
- * @preferred_bpp: Preferred bits per pixel for the device.
- *                 @dev->mode_config.preferred_depth is used if this is zero.
- *
- * This function sets up generic fbdev emulation for drivers that supports
- * dumb buffers with a virtual address and that can be mmap'ed.
- * drm_fbdev_generic_setup() shall be called after the DRM driver registered
- * the new DRM device with drm_dev_register().
- *
- * Restore, hotplug events and teardown are all taken care of. Drivers that do
- * suspend/resume need to call drm_fb_helper_set_suspend_unlocked() themselves.
- * Simple drivers might use drm_mode_config_helper_suspend().
- *
- * Drivers that set the dirty callback on their framebuffer will get a shadow
- * fbdev buffer that is blitted onto the real buffer. This is done in order to
- * make deferred I/O work with all kinds of buffers. A shadow buffer can be
- * requested explicitly by setting struct drm_mode_config.prefer_shadow or
- * struct drm_mode_config.prefer_shadow_fbdev to true beforehand. This is
- * required to use generic fbdev emulation with SHMEM helpers.
- *
- * This function is safe to call even when there are no connectors present.
- * Setup will be retried on the next hotplug event.
- *
- * The fbdev is destroyed by drm_dev_unregister().
- */
-void drm_fbdev_generic_setup(struct drm_device *dev,
-			     unsigned int preferred_bpp)
-{
-	struct drm_fb_helper *fb_helper;
-	int ret;
-
-	drm_WARN(dev, !dev->registered, "Device has not been registered.\n");
-	drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n");
-
-	fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
-	if (!fb_helper) {
-		drm_err(dev, "Failed to allocate fb_helper\n");
-		return;
-	}
-
-	ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_client_funcs);
-	if (ret) {
-		kfree(fb_helper);
-		drm_err(dev, "Failed to register client: %d\n", ret);
-		return;
-	}
-
-	/*
-	 * FIXME: This mixes up depth with bpp, which results in a glorious
-	 * mess, resulting in some drivers picking wrong fbdev defaults and
-	 * others wrong preferred_depth defaults.
-	 */
-	if (!preferred_bpp)
-		preferred_bpp = dev->mode_config.preferred_depth;
-	if (!preferred_bpp)
-		preferred_bpp = 32;
-	fb_helper->preferred_bpp = preferred_bpp;
-
-	ret = drm_fbdev_client_hotplug(&fb_helper->client);
-	if (ret)
-		drm_dbg_kms(dev, "client hotplug ret=%d\n", ret);
-
-	drm_client_register(&fb_helper->client);
-}
-EXPORT_SYMBOL(drm_fbdev_generic_setup);
diff --git a/drivers/gpu/drm/drm_fbdev.c b/drivers/gpu/drm/drm_fbdev.c
new file mode 100644
index 0000000000000..64085bc8b3809
--- /dev/null
+++ b/drivers/gpu/drm/drm_fbdev.c
@@ -0,0 +1,512 @@
+// SPDX-License-Identifier: MIT
+
+#include <linux/moduleparam.h>
+
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_print.h>
+
+#include <drm/drm_fbdev.h>
+
+/*
+ * In order to keep user-space compatibility, we want in certain use-cases
+ * to keep leaking the fbdev physical address to the user-space program
+ * handling the fbdev buffer.
+ * This is a bad habit essentially kept into closed source opengl driver
+ * that should really be moved into open-source upstream projects instead
+ * of using legacy physical addresses in user space to communicate with
+ * other out-of-tree kernel modules.
+ *
+ * This module_param *should* be removed as soon as possible and be
+ * considered as a broken and legacy behaviour from a modern fbdev device.
+ */
+#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
+static bool drm_leak_fbdev_smem;
+module_param_unsafe(drm_leak_fbdev_smem, bool, 0600);
+MODULE_PARM_DESC(drm_leak_fbdev_smem,
+		 "Allow unsafe leaking fbdev physical smem address [default=false]");
+#endif
+
+static bool drm_fbdev_use_shadow_fb(struct drm_fb_helper *fb_helper)
+{
+	struct drm_device *dev = fb_helper->dev;
+	struct drm_framebuffer *fb = fb_helper->fb;
+
+	return dev->mode_config.prefer_shadow_fbdev ||
+	       dev->mode_config.prefer_shadow ||
+	       fb->funcs->dirty;
+}
+
+/* @user: 1=userspace, 0=fbcon */
+static int drm_fbdev_fb_open(struct fb_info *info, int user)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+
+	/* No need to take a ref for fbcon because it unbinds on unregister */
+	if (user && !try_module_get(fb_helper->dev->driver->fops->owner))
+		return -ENODEV;
+
+	return 0;
+}
+
+static int drm_fbdev_fb_release(struct fb_info *info, int user)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+
+	if (user)
+		module_put(fb_helper->dev->driver->fops->owner);
+
+	return 0;
+}
+
+static void drm_fbdev_cleanup(struct drm_fb_helper *fb_helper)
+{
+	struct fb_info *fbi = fb_helper->info;
+	void *shadow = NULL;
+
+	if (!fb_helper->dev)
+		return;
+
+	if (fbi) {
+		if (fbi->fbdefio)
+			fb_deferred_io_cleanup(fbi);
+		if (drm_fbdev_use_shadow_fb(fb_helper))
+			shadow = fbi->screen_buffer;
+	}
+
+	drm_fb_helper_fini(fb_helper);
+
+	if (shadow)
+		vfree(shadow);
+	else if (fb_helper->buffer)
+		drm_client_buffer_vunmap(fb_helper->buffer);
+
+	drm_client_framebuffer_delete(fb_helper->buffer);
+}
+
+static void drm_fbdev_release(struct drm_fb_helper *fb_helper)
+{
+	drm_fbdev_cleanup(fb_helper);
+	drm_client_release(&fb_helper->client);
+	kfree(fb_helper);
+}
+
+/*
+ * fb_ops.fb_destroy is called by the last put_fb_info() call at the end of
+ * unregister_framebuffer() or fb_release().
+ */
+static void drm_fbdev_fb_destroy(struct fb_info *info)
+{
+	drm_fbdev_release(info->par);
+}
+
+static int drm_fbdev_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+
+	if (drm_fbdev_use_shadow_fb(fb_helper))
+		return fb_deferred_io_mmap(info, vma);
+	else if (fb_helper->dev->driver->gem_prime_mmap)
+		return fb_helper->dev->driver->gem_prime_mmap(fb_helper->buffer->gem, vma);
+	else
+		return -ENODEV;
+}
+
+static bool drm_fbdev_use_iomem(struct fb_info *info)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+	struct drm_client_buffer *buffer = fb_helper->buffer;
+
+	return !drm_fbdev_use_shadow_fb(fb_helper) && buffer->map.is_iomem;
+}
+
+static ssize_t drm_fbdev_fb_read(struct fb_info *info, char __user *buf,
+				 size_t count, loff_t *ppos)
+{
+	ssize_t ret;
+
+	if (drm_fbdev_use_iomem(info))
+		ret = drm_fb_helper_cfb_read(info, buf, count, ppos);
+	else
+		ret = drm_fb_helper_sys_read(info, buf, count, ppos);
+
+	return ret;
+}
+
+static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
+				  size_t count, loff_t *ppos)
+{
+	ssize_t ret;
+
+	if (drm_fbdev_use_iomem(info))
+		ret = drm_fb_helper_cfb_write(info, buf, count, ppos);
+	else
+		ret = drm_fb_helper_sys_write(info, buf, count, ppos);
+
+	return ret;
+}
+
+static void drm_fbdev_fb_fillrect(struct fb_info *info,
+				  const struct fb_fillrect *rect)
+{
+	if (drm_fbdev_use_iomem(info))
+		drm_fb_helper_cfb_fillrect(info, rect);
+	else
+		drm_fb_helper_sys_fillrect(info, rect);
+}
+
+static void drm_fbdev_fb_copyarea(struct fb_info *info,
+				  const struct fb_copyarea *area)
+{
+	if (drm_fbdev_use_iomem(info))
+		drm_fb_helper_cfb_copyarea(info, area);
+	else
+		drm_fb_helper_sys_copyarea(info, area);
+}
+
+static void drm_fbdev_fb_imageblit(struct fb_info *info,
+				   const struct fb_image *image)
+{
+	if (drm_fbdev_use_iomem(info))
+		drm_fb_helper_cfb_imageblit(info, image);
+	else
+		drm_fb_helper_sys_imageblit(info, image);
+}
+
+static const struct fb_ops drm_fbdev_fb_ops = {
+	.owner		= THIS_MODULE,
+	DRM_FB_HELPER_DEFAULT_OPS,
+	.fb_open	= drm_fbdev_fb_open,
+	.fb_release	= drm_fbdev_fb_release,
+	.fb_destroy	= drm_fbdev_fb_destroy,
+	.fb_mmap	= drm_fbdev_fb_mmap,
+	.fb_read	= drm_fbdev_fb_read,
+	.fb_write	= drm_fbdev_fb_write,
+	.fb_fillrect	= drm_fbdev_fb_fillrect,
+	.fb_copyarea	= drm_fbdev_fb_copyarea,
+	.fb_imageblit	= drm_fbdev_fb_imageblit,
+};
+
+static struct fb_deferred_io drm_fbdev_defio = {
+	.delay		= HZ / 20,
+	.deferred_io	= drm_fb_helper_deferred_io,
+};
+
+/*
+ * This function uses the client API to create a framebuffer backed by a dumb buffer.
+ */
+static int drm_fbdev_fb_probe(struct drm_fb_helper *fb_helper,
+			      struct drm_fb_helper_surface_size *sizes)
+{
+	struct drm_client_dev *client = &fb_helper->client;
+	struct drm_device *dev = fb_helper->dev;
+	struct drm_client_buffer *buffer;
+	struct drm_framebuffer *fb;
+	struct fb_info *fbi;
+	u32 format;
+	struct iosys_map map;
+	int ret;
+
+	drm_dbg_kms(dev, "surface width(%d), height(%d) and bpp(%d)\n",
+		    sizes->surface_width, sizes->surface_height,
+		    sizes->surface_bpp);
+
+	format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
+	buffer = drm_client_framebuffer_create(client, sizes->surface_width,
+					       sizes->surface_height, format);
+	if (IS_ERR(buffer))
+		return PTR_ERR(buffer);
+
+	fb_helper->buffer = buffer;
+	fb_helper->fb = buffer->fb;
+	fb = buffer->fb;
+
+	fbi = drm_fb_helper_alloc_info(fb_helper);
+	if (IS_ERR(fbi))
+		return PTR_ERR(fbi);
+
+	fbi->fbops = &drm_fbdev_fb_ops;
+	fbi->screen_size = sizes->surface_height * fb->pitches[0];
+	fbi->fix.smem_len = fbi->screen_size;
+	fbi->flags = FBINFO_DEFAULT;
+
+	drm_fb_helper_fill_info(fbi, fb_helper, sizes);
+
+	if (drm_fbdev_use_shadow_fb(fb_helper)) {
+		fbi->screen_buffer = vzalloc(fbi->screen_size);
+		if (!fbi->screen_buffer)
+			return -ENOMEM;
+		fbi->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
+
+		fbi->fbdefio = &drm_fbdev_defio;
+		fb_deferred_io_init(fbi);
+	} else {
+		/* buffer is mapped for HW framebuffer */
+		ret = drm_client_buffer_vmap(fb_helper->buffer, &map);
+		if (ret)
+			return ret;
+		if (map.is_iomem) {
+			fbi->screen_base = map.vaddr_iomem;
+		} else {
+			fbi->screen_buffer = map.vaddr;
+			fbi->flags |= FBINFO_VIRTFB;
+		}
+
+		/*
+		 * Shamelessly leak the physical address to user-space. As
+		 * page_to_phys() is undefined for I/O memory, warn in this
+		 * case.
+		 */
+#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
+		if (drm_leak_fbdev_smem && fbi->fix.smem_start == 0 &&
+		    !drm_WARN_ON_ONCE(dev, map.is_iomem))
+			fbi->fix.smem_start =
+				page_to_phys(virt_to_page(fbi->screen_buffer));
+#endif
+	}
+
+	return 0;
+}
+
+static void drm_fbdev_damage_blit_real(struct drm_fb_helper *fb_helper,
+				       struct drm_clip_rect *clip,
+				       struct iosys_map *dst)
+{
+	struct drm_framebuffer *fb = fb_helper->fb;
+	size_t offset = clip->y1 * fb->pitches[0];
+	size_t len = clip->x2 - clip->x1;
+	unsigned int y;
+	void *src;
+
+	switch (drm_format_info_bpp(fb->format, 0)) {
+	case 1:
+		offset += clip->x1 / 8;
+		len = DIV_ROUND_UP(len + clip->x1 % 8, 8);
+		break;
+	case 2:
+		offset += clip->x1 / 4;
+		len = DIV_ROUND_UP(len + clip->x1 % 4, 4);
+		break;
+	case 4:
+		offset += clip->x1 / 2;
+		len = DIV_ROUND_UP(len + clip->x1 % 2, 2);
+		break;
+	default:
+		offset += clip->x1 * fb->format->cpp[0];
+		len *= fb->format->cpp[0];
+		break;
+	}
+
+	src = fb_helper->info->screen_buffer + offset;
+	iosys_map_incr(dst, offset); /* go to first pixel within clip rect */
+
+	for (y = clip->y1; y < clip->y2; y++) {
+		iosys_map_memcpy_to(dst, 0, src, len);
+		iosys_map_incr(dst, fb->pitches[0]);
+		src += fb->pitches[0];
+	}
+}
+
+static int drm_fbdev_damage_blit(struct drm_fb_helper *fb_helper,
+				 struct drm_clip_rect *clip)
+{
+	struct drm_client_buffer *buffer = fb_helper->buffer;
+	struct iosys_map map, dst;
+	int ret;
+
+	/*
+	 * We have to pin the client buffer to its current location while
+	 * flushing the shadow buffer. In the general case, concurrent
+	 * modesetting operations could try to move the buffer and would
+	 * fail. The modeset has to be serialized by acquiring the reservation
+	 * object of the underlying BO here.
+	 *
+	 * For fbdev emulation, we only have to protect against fbdev modeset
+	 * operations. Nothing else will involve the client buffer's BO. So it
+	 * is sufficient to acquire struct drm_fb_helper.lock here.
+	 */
+	mutex_lock(&fb_helper->lock);
+
+	ret = drm_client_buffer_vmap(buffer, &map);
+	if (ret)
+		goto out;
+
+	dst = map;
+	drm_fbdev_damage_blit_real(fb_helper, clip, &dst);
+
+	drm_client_buffer_vunmap(buffer);
+
+out:
+	mutex_unlock(&fb_helper->lock);
+
+	return ret;
+}
+
+static int drm_fbdev_fb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
+{
+	struct drm_device *dev = helper->dev;
+	int ret;
+
+	if (!drm_fbdev_use_shadow_fb(helper))
+		return 0;
+
+	/* Call damage handlers only if necessary */
+	if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
+		return 0;
+
+	if (helper->buffer) {
+		ret = drm_fbdev_damage_blit(helper, clip);
+		if (drm_WARN_ONCE(dev, ret, "Damage blitter failed: ret=%d\n", ret))
+			return ret;
+	}
+
+	if (helper->fb->funcs->dirty) {
+		ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
+		if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret))
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct drm_fb_helper_funcs drm_fb_helper_generic_funcs = {
+	.fb_probe = drm_fbdev_fb_probe,
+	.fb_dirty = drm_fbdev_fb_dirty,
+};
+
+static void drm_fbdev_client_unregister(struct drm_client_dev *client)
+{
+	struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
+
+	if (fb_helper->info)
+		/* drm_fbdev_fb_destroy() takes care of cleanup */
+		drm_fb_helper_unregister_info(fb_helper);
+	else
+		drm_fbdev_release(fb_helper);
+}
+
+static int drm_fbdev_client_restore(struct drm_client_dev *client)
+{
+	drm_fb_helper_lastclose(client->dev);
+
+	return 0;
+}
+
+static int drm_fbdev_client_hotplug(struct drm_client_dev *client)
+{
+	struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
+	struct drm_device *dev = client->dev;
+	int ret;
+
+	/* Setup is not retried if it has failed */
+	if (!fb_helper->dev && fb_helper->funcs)
+		return 0;
+
+	if (dev->fb_helper)
+		return drm_fb_helper_hotplug_event(dev->fb_helper);
+
+	if (!dev->mode_config.num_connector) {
+		drm_dbg_kms(dev, "No connectors found, will not create framebuffer!\n");
+		return 0;
+	}
+
+	drm_fb_helper_prepare(dev, fb_helper, &drm_fb_helper_generic_funcs);
+
+	ret = drm_fb_helper_init(dev, fb_helper);
+	if (ret)
+		goto err;
+
+	if (!drm_drv_uses_atomic_modeset(dev))
+		drm_helper_disable_unused_functions(dev);
+
+	ret = drm_fb_helper_initial_config(fb_helper, fb_helper->preferred_bpp);
+	if (ret)
+		goto err_cleanup;
+
+	return 0;
+
+err_cleanup:
+	drm_fbdev_cleanup(fb_helper);
+err:
+	fb_helper->dev = NULL;
+	fb_helper->info = NULL;
+
+	drm_err(dev, "fbdev: Failed to setup generic emulation (ret=%d)\n", ret);
+
+	return ret;
+}
+
+static const struct drm_client_funcs drm_fbdev_client_funcs = {
+	.owner		= THIS_MODULE,
+	.unregister	= drm_fbdev_client_unregister,
+	.restore	= drm_fbdev_client_restore,
+	.hotplug	= drm_fbdev_client_hotplug,
+};
+
+/**
+ * drm_fbdev_generic_setup() - Setup generic fbdev emulation
+ * @dev: DRM device
+ * @preferred_bpp: Preferred bits per pixel for the device.
+ *                 @dev->mode_config.preferred_depth is used if this is zero.
+ *
+ * This function sets up generic fbdev emulation for drivers that supports
+ * dumb buffers with a virtual address and that can be mmap'ed.
+ * drm_fbdev_generic_setup() shall be called after the DRM driver registered
+ * the new DRM device with drm_dev_register().
+ *
+ * Restore, hotplug events and teardown are all taken care of. Drivers that do
+ * suspend/resume need to call drm_fb_helper_set_suspend_unlocked() themselves.
+ * Simple drivers might use drm_mode_config_helper_suspend().
+ *
+ * Drivers that set the dirty callback on their framebuffer will get a shadow
+ * fbdev buffer that is blitted onto the real buffer. This is done in order to
+ * make deferred I/O work with all kinds of buffers. A shadow buffer can be
+ * requested explicitly by setting struct drm_mode_config.prefer_shadow or
+ * struct drm_mode_config.prefer_shadow_fbdev to true beforehand. This is
+ * required to use generic fbdev emulation with SHMEM helpers.
+ *
+ * This function is safe to call even when there are no connectors present.
+ * Setup will be retried on the next hotplug event.
+ *
+ * The fbdev is destroyed by drm_dev_unregister().
+ */
+void drm_fbdev_generic_setup(struct drm_device *dev,
+			     unsigned int preferred_bpp)
+{
+	struct drm_fb_helper *fb_helper;
+	int ret;
+
+	drm_WARN(dev, !dev->registered, "Device has not been registered.\n");
+	drm_WARN(dev, dev->fb_helper, "fb_helper is already set!\n");
+
+	fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
+	if (!fb_helper)
+		return;
+
+	ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_client_funcs);
+	if (ret) {
+		kfree(fb_helper);
+		drm_err(dev, "Failed to register client: %d\n", ret);
+		return;
+	}
+
+	/*
+	 * FIXME: This mixes up depth with bpp, which results in a glorious
+	 * mess, resulting in some drivers picking wrong fbdev defaults and
+	 * others wrong preferred_depth defaults.
+	 */
+	if (!preferred_bpp)
+		preferred_bpp = dev->mode_config.preferred_depth;
+	if (!preferred_bpp)
+		preferred_bpp = 32;
+	fb_helper->preferred_bpp = preferred_bpp;
+
+	ret = drm_fbdev_client_hotplug(&fb_helper->client);
+	if (ret)
+		drm_dbg_kms(dev, "client hotplug ret=%d\n", ret);
+
+	drm_client_register(&fb_helper->client);
+}
+EXPORT_SYMBOL(drm_fbdev_generic_setup);
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index b4acc3422ba45..5bf2d019dd5c4 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -20,7 +20,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_modeset_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/gud/gud_drv.c b/drivers/gpu/drm/gud/gud_drv.c
index 8d1630b8edac1..53e4630369c9c 100644
--- a/drivers/gpu/drm/gud/gud_drv.c
+++ b/drivers/gpu/drm/gud/gud_drv.c
@@ -18,7 +18,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_debugfs.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index fe4269c5aa0ab..225f67bc18afe 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -17,6 +17,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_gem_vram_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index 73ee7f25f7346..47c22b8f37acd 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -19,7 +19,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
index f84d39762a72b..c9fa5e152d059 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
@@ -11,7 +11,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_simple_kms_helper.h>
 
diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.c b/drivers/gpu/drm/imx/dcss/dcss-kms.c
index 1defd6a40f11d..4f4267c95c76e 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-kms.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-kms.c
@@ -7,7 +7,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge_connector.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_of.h>
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 8dd8b0f912af6..a82c92f0a0d10 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -16,7 +16,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 99f86f1ba8bee..20d8953525876 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -32,7 +32,7 @@
 #include <drm/drm_encoder.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_atomic_helper.h>
diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c
index 2382ccb3ee99d..0fc46b71e5bf5 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.c
+++ b/drivers/gpu/drm/kmb/kmb_drv.c
@@ -15,7 +15,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/logicvc/logicvc_drm.c b/drivers/gpu/drm/logicvc/logicvc_drm.c
index cc9a4e965f779..87bbfd55f7803 100644
--- a/drivers/gpu/drm/logicvc/logicvc_drm.c
+++ b/drivers/gpu/drm/logicvc/logicvc_drm.c
@@ -17,7 +17,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_print.h>
 
diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
index 38c3907bb151a..52ec3f70ea087 100644
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -69,7 +69,7 @@
 #include <drm/drm_bridge.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 91f58db5915f5..450ba47bd8771 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -17,7 +17,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_dma_helper.h>
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 3b24a924b7b97..c88a5eab9dad3 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -18,7 +18,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_modeset_helper_vtables.h>
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c
index ece6cd102dbb1..75132cfc8d6de 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -11,6 +11,7 @@
 
 #include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/mxsfb/lcdif_drv.c b/drivers/gpu/drm/mxsfb/lcdif_drv.c
index 075002ed6fb09..d682b26f84c0b 100644
--- a/drivers/gpu/drm/mxsfb/lcdif_drv.c
+++ b/drivers/gpu/drm/mxsfb/lcdif_drv.c
@@ -16,7 +16,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_mode_config.h>
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index b29b332ed3814..eec7c26d039f0 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -20,7 +20,7 @@
 #include <drm/drm_bridge.h>
 #include <drm/drm_connector.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
index b59472c29a40d..d37fc22527e1f 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
@@ -31,7 +31,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c
index eb25eedb5ee00..fdc40470e1a1f 100644
--- a/drivers/gpu/drm/pl111/pl111_drv.c
+++ b/drivers/gpu/drm/pl111/pl111_drv.c
@@ -48,7 +48,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
index 3044ca948ce22..34cda5b234100 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.c
+++ b/drivers/gpu/drm/qxl/qxl_drv.c
@@ -37,6 +37,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_gem_ttm_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index a2776f1d6f2c2..6b9e87a49e8e9 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -20,7 +20,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_probe_helper.h>
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 813f9f8c86982..8bf0a85a59b40 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -17,7 +17,7 @@
 
 #include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c
index f2795f90ea693..5a654201ff32c 100644
--- a/drivers/gpu/drm/solomon/ssd130x.c
+++ b/drivers/gpu/drm/solomon/ssd130x.c
@@ -23,7 +23,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_atomic_helper.h>
diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index 7abf010a32935..0d9607855ef66 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -14,7 +14,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_debugfs.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_of.h>
diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index d7914f5122dff..9e7159eef7e2c 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -18,7 +18,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index d06ffd99d86e1..63d27244268ea 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -17,7 +17,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_module.h>
 #include <drm/drm_of.h>
diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
index 15cd9b91b7e2a..0c5534194cd0f 100644
--- a/drivers/gpu/drm/tidss/tidss_drv.c
+++ b/drivers/gpu/drm/tidss/tidss_drv.c
@@ -14,7 +14,7 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index f72755b8ea14c..3fb1e8d0e8f80 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -16,7 +16,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_debugfs.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/tiny/arcpgu.c b/drivers/gpu/drm/tiny/arcpgu.c
index bb302a3fd6b5f..4d10c5bf2e601 100644
--- a/drivers/gpu/drm/tiny/arcpgu.c
+++ b/drivers/gpu/drm/tiny/arcpgu.c
@@ -12,7 +12,7 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_dma_helper.h>
diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
index a51262289aefd..e7e46502612b1 100644
--- a/drivers/gpu/drm/tiny/bochs.c
+++ b/drivers/gpu/drm/tiny/bochs.c
@@ -7,7 +7,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/tiny/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
index 354d5e854a6f0..f7181b2f8369d 100644
--- a/drivers/gpu/drm/tiny/cirrus.c
+++ b/drivers/gpu/drm/tiny/cirrus.c
@@ -30,7 +30,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_fourcc.h>
diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
index 7441d992a5d7a..3a37138aeba96 100644
--- a/drivers/gpu/drm/tiny/gm12u320.c
+++ b/drivers/gpu/drm/tiny/gm12u320.c
@@ -12,7 +12,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_fourcc.h>
diff --git a/drivers/gpu/drm/tiny/hx8357d.c b/drivers/gpu/drm/tiny/hx8357d.c
index 48c24aa8c28a1..eefffa46bb78d 100644
--- a/drivers/gpu/drm/tiny/hx8357d.c
+++ b/drivers/gpu/drm/tiny/hx8357d.c
@@ -18,7 +18,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/tiny/ili9163.c b/drivers/gpu/drm/tiny/ili9163.c
index 9a1a5943bee01..0aa1d84995abc 100644
--- a/drivers/gpu/drm/tiny/ili9163.c
+++ b/drivers/gpu/drm/tiny/ili9163.c
@@ -9,7 +9,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_mipi_dbi.h>
diff --git a/drivers/gpu/drm/tiny/ili9225.c b/drivers/gpu/drm/tiny/ili9225.c
index a79da2b4af647..028e63e68a883 100644
--- a/drivers/gpu/drm/tiny/ili9225.c
+++ b/drivers/gpu/drm/tiny/ili9225.c
@@ -20,7 +20,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_atomic_helper.h>
diff --git a/drivers/gpu/drm/tiny/ili9341.c b/drivers/gpu/drm/tiny/ili9341.c
index 69b265e78096b..2a0b516ff1b44 100644
--- a/drivers/gpu/drm/tiny/ili9341.c
+++ b/drivers/gpu/drm/tiny/ili9341.c
@@ -17,7 +17,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/tiny/ili9486.c b/drivers/gpu/drm/tiny/ili9486.c
index c80028bb1d110..f16cadc813ca7 100644
--- a/drivers/gpu/drm/tiny/ili9486.c
+++ b/drivers/gpu/drm/tiny/ili9486.c
@@ -16,7 +16,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/tiny/mi0283qt.c b/drivers/gpu/drm/tiny/mi0283qt.c
index bc522fb3d94d1..5307d5d28df59 100644
--- a/drivers/gpu/drm/tiny/mi0283qt.c
+++ b/drivers/gpu/drm/tiny/mi0283qt.c
@@ -15,7 +15,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/tiny/ofdrm.c b/drivers/gpu/drm/tiny/ofdrm.c
index 0e1cc2369afcc..016372da72d12 100644
--- a/drivers/gpu/drm/tiny/ofdrm.c
+++ b/drivers/gpu/drm/tiny/ofdrm.c
@@ -11,7 +11,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_device.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_atomic_helper.h>
diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
index 955a61d628e7c..7249cf8accec4 100644
--- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c
+++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
@@ -16,7 +16,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/tiny/repaper.c b/drivers/gpu/drm/tiny/repaper.c
index e62f4d16b2c6b..347366a3d5767 100644
--- a/drivers/gpu/drm/tiny/repaper.c
+++ b/drivers/gpu/drm/tiny/repaper.c
@@ -26,7 +26,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_atomic_helper.h>
diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c
index cbb100753154e..b9f541c058c55 100644
--- a/drivers/gpu/drm/tiny/simpledrm.c
+++ b/drivers/gpu/drm/tiny/simpledrm.c
@@ -15,7 +15,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_device.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/drivers/gpu/drm/tiny/st7586.c b/drivers/gpu/drm/tiny/st7586.c
index b6f620b902e6d..a9de2c6695d13 100644
--- a/drivers/gpu/drm/tiny/st7586.c
+++ b/drivers/gpu/drm/tiny/st7586.c
@@ -16,7 +16,7 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_atomic_helper.h>
diff --git a/drivers/gpu/drm/tiny/st7735r.c b/drivers/gpu/drm/tiny/st7735r.c
index c36ba08acda18..4d2d43c27582f 100644
--- a/drivers/gpu/drm/tiny/st7735r.c
+++ b/drivers/gpu/drm/tiny/st7735r.c
@@ -18,7 +18,7 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
index 611785e097576..684f319d94c70 100644
--- a/drivers/gpu/drm/tve200/tve200_drv.c
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -40,7 +40,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_module.h>
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index 91effdcefb6d5..6ccfc23b9134c 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -7,7 +7,7 @@
 
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/vboxvideo/vbox_drv.c b/drivers/gpu/drm/vboxvideo/vbox_drv.c
index 1cd716eb17a1c..61cc110440a54 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_drv.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_drv.c
@@ -14,7 +14,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_managed.h>
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 2027063fdc309..94d4a6b1cd3ab 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -33,7 +33,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_vblank.h>
 
 #include <soc/bcm2835/raspberrypi-firmware.h>
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index 0035affc3e590..70c0f49ac895b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -35,6 +35,7 @@
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 
 #include "virtgpu_drv.h"
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index 0ffe5f0e33f75..e616d2e614dcb 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -17,7 +17,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_file.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_ioctl.h>
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
index 1de2d927c32b0..27c8a8218914b 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
@@ -19,7 +19,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_device.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 6581183618b89..933ca016f1224 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -285,9 +285,6 @@ int drm_fb_helper_debug_leave(struct fb_info *info);
 
 void drm_fb_helper_lastclose(struct drm_device *dev);
 void drm_fb_helper_output_poll_changed(struct drm_device *dev);
-
-void drm_fbdev_generic_setup(struct drm_device *dev,
-			     unsigned int preferred_bpp);
 #else
 static inline void drm_fb_helper_prepare(struct drm_device *dev,
 					struct drm_fb_helper *helper,
@@ -472,12 +469,6 @@ static inline void drm_fb_helper_lastclose(struct drm_device *dev)
 static inline void drm_fb_helper_output_poll_changed(struct drm_device *dev)
 {
 }
-
-static inline void
-drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
-{
-}
-
 #endif
 
 #endif
diff --git a/include/drm/drm_fbdev.h b/include/drm/drm_fbdev.h
new file mode 100644
index 0000000000000..d977087e94b6b
--- /dev/null
+++ b/include/drm/drm_fbdev.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT */
+
+#ifndef DRM_FBDEV_H
+#define DRM_FBDEV_H
+
+struct drm_device;
+
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp);
+#else
+static inline void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
+{ }
+#endif
+
+#endif
-- 
2.38.0

[PATCH 21/21] drm/fb-helper: Remove unnecessary include statements

[Thomas Zimmermann]

Remove include statements for <drm/drm_fb_helper.h> where it is not
required (i.e., most of them). In a few places include other header
files that are required by the source code.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c  | 1 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c     | 1 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h        | 1 -
 drivers/gpu/drm/arm/hdlcd_crtc.c                | 1 -
 drivers/gpu/drm/ast/ast_drv.h                   | 1 -
 drivers/gpu/drm/bridge/tc358762.c               | 2 +-
 drivers/gpu/drm/drm_crtc_helper.c               | 1 -
 drivers/gpu/drm/drm_gem_framebuffer_helper.c    | 1 -
 drivers/gpu/drm/drm_probe_helper.c              | 1 -
 drivers/gpu/drm/etnaviv/etnaviv_drv.h           | 3 ++-
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 1 -
 drivers/gpu/drm/hyperv/hyperv_drm_modeset.c     | 1 -
 drivers/gpu/drm/imx/imx-ldb.c                   | 2 +-
 drivers/gpu/drm/imx/imx-tve.c                   | 1 -
 drivers/gpu/drm/imx/parallel-display.c          | 2 +-
 drivers/gpu/drm/kmb/kmb_plane.c                 | 1 -
 drivers/gpu/drm/mgag200/mgag200_drv.h           | 1 -
 drivers/gpu/drm/qxl/qxl_drv.h                   | 1 -
 drivers/gpu/drm/rockchip/rockchip_drm_drv.h     | 2 +-
 drivers/gpu/drm/tidss/tidss_kms.c               | 1 -
 drivers/gpu/drm/v3d/v3d_drv.c                   | 1 -
 drivers/gpu/drm/vboxvideo/vbox_main.c           | 1 -
 drivers/gpu/drm/virtio/virtgpu_drv.h            | 1 -
 drivers/gpu/drm/xen/xen_drm_front_gem.c         | 1 -
 24 files changed, 6 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index 491d4846fc02c..e1320edfc5274 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -26,7 +26,6 @@
 
 #include <drm/display/drm_dp_helper.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/amdgpu_drm.h>
 #include "amdgpu.h"
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index fb7186c5ade2a..5d8f661f31676 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -42,7 +42,6 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_vblank.h>
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 37322550d7508..8a39300b1a845 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -36,7 +36,6 @@
 #include <drm/drm_encoder.h>
 #include <drm/drm_fixed.h>
 #include <drm/drm_crtc_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_probe_helper.h>
 #include <linux/i2c.h>
diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c
index 7030339fa2323..ddbe1dd2d44ef 100644
--- a/drivers/gpu/drm/arm/hdlcd_crtc.c
+++ b/drivers/gpu/drm/arm/hdlcd_crtc.c
@@ -19,7 +19,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_of.h>
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 74f41282444f6..d51b81fea9c80 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -38,7 +38,6 @@
 #include <drm/drm_encoder.h>
 #include <drm/drm_mode.h>
 #include <drm/drm_framebuffer.h>
-#include <drm/drm_fb_helper.h>
 
 #define DRIVER_AUTHOR		"Dave Airlie"
 
diff --git a/drivers/gpu/drm/bridge/tc358762.c b/drivers/gpu/drm/bridge/tc358762.c
index 7f4fce1aa9988..0b6a284368859 100644
--- a/drivers/gpu/drm/bridge/tc358762.c
+++ b/drivers/gpu/drm/bridge/tc358762.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/delay.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
@@ -19,7 +20,6 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 1f0a270ac9847..d010b9ad6d24d 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -42,7 +42,6 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_encoder.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_print.h>
diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
index 880a4975507fc..8b7da4f9d2bc1 100644
--- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c
+++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
@@ -9,7 +9,6 @@
 #include <linux/module.h>
 
 #include <drm/drm_damage_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem.h>
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 69b0b2b9cc1c5..ef2b41b2eb7b8 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -36,7 +36,6 @@
 #include <drm/drm_client.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_print.h>
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index f32f4771dada7..2bb4c25565dcb 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -6,13 +6,14 @@
 #ifndef __ETNAVIV_DRV_H__
 #define __ETNAVIV_DRV_H__
 
+#include <linux/io.h>
 #include <linux/list.h>
 #include <linux/mm_types.h>
 #include <linux/sizes.h>
 #include <linux/time64.h>
 #include <linux/types.h>
 
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_drv.h>
 #include <drm/drm_gem.h>
 #include <drm/etnaviv_drm.h>
 #include <drm/gpu_scheduler.h>
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index 7d263f4d70784..feba46e430526 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -19,7 +19,6 @@
 #include <linux/i2c.h>
 
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_framebuffer.h>
 
 struct hibmc_connector {
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
index 28e732f94bf2f..6c6b572987973 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
@@ -8,7 +8,6 @@
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 41799011f73b6..c45fc8f4744d0 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -7,6 +7,7 @@
 
 #include <linux/clk.h>
 #include <linux/component.h>
+#include <linux/i2c.h>
 #include <linux/media-bus-format.h>
 #include <linux/mfd/syscon.h>
 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
@@ -23,7 +24,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 6b34fac3f73a0..d64ebd2cf15e8 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -19,7 +19,6 @@
 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 06723b2e9b847..0fa0b590830b6 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -8,6 +8,7 @@
 #include <linux/component.h>
 #include <linux/media-bus-format.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/videodev2.h>
 
@@ -16,7 +17,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
index a42f63f6f9573..d172a302f9024 100644
--- a/drivers/gpu/drm/kmb/kmb_plane.c
+++ b/drivers/gpu/drm/kmb/kmb_plane.c
@@ -9,7 +9,6 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_dma_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_dma_helper.h>
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index f0c2349404b46..9e604dbb8e448 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -18,7 +18,6 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_encoder.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_plane.h>
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index 432758ad39a35..76f060810f634 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -38,7 +38,6 @@
 
 #include <drm/drm_crtc.h>
 #include <drm/drm_encoder.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_ttm_helper.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_gem.h>
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
index 1641440837af5..aeb03a57240fd 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
@@ -9,10 +9,10 @@
 #ifndef _ROCKCHIP_DRM_DRV_H
 #define _ROCKCHIP_DRM_DRV_H
 
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_gem.h>
 
+#include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/component.h>
 
diff --git a/drivers/gpu/drm/tidss/tidss_kms.c b/drivers/gpu/drm/tidss/tidss_kms.c
index afb2879980c6c..345bcc3011e4f 100644
--- a/drivers/gpu/drm/tidss/tidss_kms.c
+++ b/drivers/gpu/drm/tidss/tidss_kms.c
@@ -10,7 +10,6 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_crtc_helper.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index e8c975b815859..478f1f0f60dec 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -22,7 +22,6 @@
 #include <linux/reset.h>
 
 #include <drm/drm_drv.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_managed.h>
 #include <uapi/drm/v3d_drm.h>
 
diff --git a/drivers/gpu/drm/vboxvideo/vbox_main.c b/drivers/gpu/drm/vboxvideo/vbox_main.c
index c9e8b3a63c621..3b83e550f4df5 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_main.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_main.c
@@ -11,7 +11,6 @@
 #include <linux/pci.h>
 #include <linux/vbox_err.h>
 
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_damage_helper.h>
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 9b98470593b06..b7a64c7dcc2c9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -35,7 +35,6 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_encoder.h>
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_gem.h>
diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c
index e31554d7139f1..4c95ebcdcc2d3 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_gem.c
+++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c
@@ -12,7 +12,6 @@
 #include <linux/scatterlist.h>
 #include <linux/shmem_fs.h>
 
-#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_prime.h>
 #include <drm/drm_probe_helper.h>
-- 
2.38.0

Re: [PATCH 03/21] drm/ingenic: Don't set struct drm_driver.lastclose

[Sergey Shtylyov]

Hello!

On 10/20/22 1:37 PM, Thomas Zimmermann wrote:

> Don't set struct drm_mode_config.output_poll_changed. It's used to
> inform the fbdev console about conncetor changes. But as ingenic

   Connector. :-)

> uses generic fbdev emulation, the console is being informed by the
> DRM client helpers already. See the calls to drm_client_dev_hotplug()
> in drm_probe_helper.c.
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
[...]

MBR, Sergey

Re: [PATCH 01/21] drm/amdgpu: Don't set struct drm_driver.lastclose

[Christian König]

Am 20.10.22 um 12:37 schrieb Thomas Zimmermann:
> Don't set struct drm_driver.lastclose. It's used to restore the
> fbdev console. But as amdgpu uses generic fbdev emulation, the
> console is being restored by the DRM client helpers already. See
> the call to drm_client_dev_restore() in drm_lastclose().

???

The commit message doesn't match what the patch is doing. You are 
removing output_poll_changed instead of lastclose here.

Did something got mixed up?

Cheers,
Christian.

>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_display.c       | 1 -
>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 --
>   2 files changed, 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> index 23998f727c7f9..fb7186c5ade2a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> @@ -1224,7 +1224,6 @@ amdgpu_display_user_framebuffer_create(struct drm_device *dev,
>   
>   const struct drm_mode_config_funcs amdgpu_mode_funcs = {
>   	.fb_create = amdgpu_display_user_framebuffer_create,
> -	.output_poll_changed = drm_fb_helper_output_poll_changed,
>   };
>   
>   static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index f6a9e8fdd87d6..e9a28a5363b9a 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -82,7 +82,6 @@
>   #include <drm/drm_atomic_uapi.h>
>   #include <drm/drm_atomic_helper.h>
>   #include <drm/drm_blend.h>
> -#include <drm/drm_fb_helper.h>
>   #include <drm/drm_fourcc.h>
>   #include <drm/drm_edid.h>
>   #include <drm/drm_vblank.h>
> @@ -2810,7 +2809,6 @@ const struct amdgpu_ip_block_version dm_ip_block =
>   static const struct drm_mode_config_funcs amdgpu_dm_mode_funcs = {
>   	.fb_create = amdgpu_display_user_framebuffer_create,
>   	.get_format_info = amd_get_format_info,
> -	.output_poll_changed = drm_fb_helper_output_poll_changed,
>   	.atomic_check = amdgpu_dm_atomic_check,
>   	.atomic_commit = drm_atomic_helper_commit,
>   };

Re: [PATCH 01/21] drm/amdgpu: Don't set struct drm_driver.lastclose

[Thomas Zimmermann]

[-- Attachment #1.1: Type: text/plain, Size: 2963 bytes --]

Hi

Am 20.10.22 um 13:48 schrieb Christian König:
> Am 20.10.22 um 12:37 schrieb Thomas Zimmermann:
>> Don't set struct drm_driver.lastclose. It's used to restore the
>> fbdev console. But as amdgpu uses generic fbdev emulation, the
>> console is being restored by the DRM client helpers already. See
>> the call to drm_client_dev_restore() in drm_lastclose().
> 
> ???
> 
> The commit message doesn't match what the patch is doing. You are 
> removing output_poll_changed instead of lastclose here.
> 
> Did something got mixed up?

Arghh. There are patches for lastclose and output_poll_changed. The 
reason for removing them is the same, but thanks to copy and paste the 
names are wrong. So the patch is correct, but the description isn't. 
Will be fixed.

Best regards
Thomas

> 
> Cheers,
> Christian.
> 
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_display.c       | 1 -
>>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 --
>>   2 files changed, 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c 
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
>> index 23998f727c7f9..fb7186c5ade2a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
>> @@ -1224,7 +1224,6 @@ amdgpu_display_user_framebuffer_create(struct 
>> drm_device *dev,
>>   const struct drm_mode_config_funcs amdgpu_mode_funcs = {
>>       .fb_create = amdgpu_display_user_framebuffer_create,
>> -    .output_poll_changed = drm_fb_helper_output_poll_changed,
>>   };
>>   static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
>> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> index f6a9e8fdd87d6..e9a28a5363b9a 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> @@ -82,7 +82,6 @@
>>   #include <drm/drm_atomic_uapi.h>
>>   #include <drm/drm_atomic_helper.h>
>>   #include <drm/drm_blend.h>
>> -#include <drm/drm_fb_helper.h>
>>   #include <drm/drm_fourcc.h>
>>   #include <drm/drm_edid.h>
>>   #include <drm/drm_vblank.h>
>> @@ -2810,7 +2809,6 @@ const struct amdgpu_ip_block_version dm_ip_block =
>>   static const struct drm_mode_config_funcs amdgpu_dm_mode_funcs = {
>>       .fb_create = amdgpu_display_user_framebuffer_create,
>>       .get_format_info = amd_get_format_info,
>> -    .output_poll_changed = drm_fb_helper_output_poll_changed,
>>       .atomic_check = amdgpu_dm_atomic_check,
>>       .atomic_commit = drm_atomic_helper_commit,
>>   };
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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