Hi all,
It has been 3 years since the last conversion of a DRM driver to atomic
modesetting, so I guess it's time for another one? ;-)
Currently, there are two drivers for the LCD controller on Renesas
SuperH-based and ARM-based SH-Mobile and R-Mobile SoCs:
1. sh_mobile_lcdcfb, using the fbdev framework,
2. shmob_drm, using the DRM framework.
However, only the former driver is used, as all platform support
integrates the former. None of these drivers support DT-based systems.
This patch series converts the SH-Mobile DRM driver to atomic
modesetting, and adds DT support, complemented by the customary set of
fixes and improvements.
Overview:
- Patch 1 adds a separate maintainer entry.
- Patch 2 adds DT bindings for the SH-Mobile LCD controller,
- Patch 3 adds definitions for RGB666 9:9 media bus formats,
- Patches 4-35 contains miscellaneous fixes, improvements, and
cleanups for the SH-Mobile DRM driver,
- Patches 36-40 convert the SH-Mobile DRM driver to atomic
modesetting,
- Patch 41 adds DT support to the SH-Mobile DRM driver.
To reduce strain on the audience, I have CCed the DT and media people
only on the cover letter and the DT resp. media patches. If interested,
the full series should be available through lore.kernel.org.
Some comments and questions can be found in the individual patches.
Changes compared to v2[1]:
- Add Reviewed-by.
Changes compared to v1[2]:
- New patches
- "[PATCH v2 01/41] MAINTAINER: Create entry for Renesas SH-Mobile
DRM drivers",
- "[PATCH v2 18/41] drm: renesas: shmobile: Remove custom plane
destroy callback",
- Add myself as co-maintainer,
- Make fck clock required,
- Drop ports description referring to obsolete graph.txt,
- Condition ports to compatible strings,
- Drop label and status from example,
- Add Reviewed-by,
- Drop unused MEDIA_BUS_FMT_RGB666_2X9_LE, as requested by Laurent,
- Move explicit clock handling to Runtime PM callbacks,
- Move devm_pm_runtime_enable() after shmob_drm_setup_clocks(),
- Depend on PM,
- Split off removal of call to drm_plane_force_disable(),
- Select VIDEOMODE_HELPERS,
- Keep table instead of replacing it by a switch() statement,
- Fix shmob_drm_interface_data.bus_fmt comment,
- Drop superfluous blank lines,
- Keep initialization of info fields together,
- Use shmob_drm_bus_fmts[],
- Keep bus format validation at probe time,
- Pass plane type to shmob_drm_plane_create() to avoid having to shift
all overlay plane indices by one,
- Rename primary_plane_funcs to shmob_drm_primary_plane_funcs,
- Rename shmob_drm_plane_funcs to shmob_drm_overlay_plane_funcs,
- Move shmob_drm_crtc_finish_page_flip() further up,
- Inline shmob_drm_crtc_st{art,op}(),
- Use devm_drm_of_get_bridge(),
- Don't print bridge->of_node on failure, as this field depends on
CONFIG_OF.
This has been tested on the R-Mobile A1-based Atmark Techno
Armadillo-800-EVA development board, using both legacy[3] and
DT-based[4] instantiation, with the fbdev-emulated text console and
modetest, a.o.
modetest -M shmob-drm -s 43:800x480@RG16 -P 33@41:640x320+80+80@RG16
modetest -M shmob-drm -s 43:800x480@RG16
The output of "modetest -M shmob-drm" can be found below[5].
Thanks for your comments!
[1] "[PATCH v2 00/41] drm: renesas: shmobile: Atomic conversion + DT
support"
https://lore.kernel.org/r/cover.1689698048.git.geert+renesas@xxxxxxxxx
[2] "[PATCH 00/39] drm: renesas: shmobile: Atomic conversion + DT
support"
https://lore.kernel.org/r/cover.1687423204.git.geert+renesas@xxxxxxxxx/
[3] "[PATCH/RFC] staging: board: armadillo800eva: Add DRM support"
https://lore.kernel.org/r/f7874a9da4bcb20fbc9cd133147b67862ebcf0b9.1687418281.git.geert+renesas@xxxxxxxxx
[4] "[PATCH 0/2] ARM: dts: r8a7740/armadillo800eva: Add LCD support"
https://lore.kernel.org/r/cover.1687417585.git.geert+renesas@xxxxxxxxx
[5] Encoders:
id crtc type possible crtcs possible clones
42 41 DPI 0x00000001 0x00000001
Connectors:
id encoder status name size (mm) modes encoders
43 42 connected DPI-1 111x67 1 42
modes:
index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot
#0 800x480 59.99 800 840 968 1056 480 515 517 525 33260 flags: nhsync, nvsync; type: preferred, driver
props:
1 EDID:
flags: immutable blob
blobs:
value:
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
5 link-status:
flags: enum
enums: Good=0 Bad=1
value: 0
6 non-desktop:
flags: immutable range
values: 0 1
value: 0
4 TILE:
flags: immutable blob
blobs:
value:
CRTCs:
id fb pos size
41 44 (0,0) (800x480)
#0 800x480 59.99 800 840 968 1056 480 515 517 525 33260 flags: nhsync, nvsync; type: preferred, driver
props:
24 VRR_ENABLED:
flags: range
values: 0 1
value: 0
Planes:
id crtc fb CRTC x,y x,y gamma size possible crtcs
31 41 44 0,0 0,0 0 0x00000001
formats: RG16 RG24 AR24 XR24 NV12 NV21 NV16 NV61 NV24 NV42
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 1
30 IN_FORMATS:
flags: immutable blob
blobs:
value:
01000000000000000a00000018000000
01000000400000005247313652473234
41523234585232344e5631324e563231
4e5631364e5636314e5632344e563432
ff030000000000000000000000000000
0000000000000000
in_formats blob decoded:
RG16: LINEAR
RG24: LINEAR
AR24: LINEAR
XR24: LINEAR
NV12: LINEAR
NV21: LINEAR
NV16: LINEAR
NV61: LINEAR
NV24: LINEAR
NV42: LINEAR
33 0 0 0,0 0,0 0 0x00000001
formats: RG16 RG24 AR24 XR24 NV12 NV21 NV16 NV61 NV24 NV42
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 0
30 IN_FORMATS:
flags: immutable blob
blobs:
value:
01000000000000000a00000018000000
01000000400000005247313652473234
41523234585232344e5631324e563231
4e5631364e5636314e5632344e563432
ff030000000000000000000000000000
0000000000000000
in_formats blob decoded:
RG16: LINEAR
RG24: LINEAR
AR24: LINEAR
XR24: LINEAR
NV12: LINEAR
NV21: LINEAR
NV16: LINEAR
NV61: LINEAR
NV24: LINEAR
NV42: LINEAR
35 0 0 0,0 0,0 0 0x00000001
formats: RG16 RG24 AR24 XR24 NV12 NV21 NV16 NV61 NV24 NV42
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 0
30 IN_FORMATS:
flags: immutable blob
blobs:
value:
01000000000000000a00000018000000
01000000400000005247313652473234
41523234585232344e5631324e563231
4e5631364e5636314e5632344e563432
ff030000000000000000000000000000
0000000000000000
in_formats blob decoded:
RG16: LINEAR
RG24: LINEAR
AR24: LINEAR
XR24: LINEAR
NV12: LINEAR
NV21: LINEAR
NV16: LINEAR
NV61: LINEAR
NV24: LINEAR
NV42: LINEAR
37 0 0 0,0 0,0 0 0x00000001
formats: RG16 RG24 AR24 XR24 NV12 NV21 NV16 NV61 NV24 NV42
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 0
30 IN_FORMATS:
flags: immutable blob
blobs:
value:
01000000000000000a00000018000000
01000000400000005247313652473234
41523234585232344e5631324e563231
4e5631364e5636314e5632344e563432
ff030000000000000000000000000000
0000000000000000
in_formats blob decoded:
RG16: LINEAR
RG24: LINEAR
AR24: LINEAR
XR24: LINEAR
NV12: LINEAR
NV21: LINEAR
NV16: LINEAR
NV61: LINEAR
NV24: LINEAR
NV42: LINEAR
39 0 0 0,0 0,0 0 0x00000001
formats: RG16 RG24 AR24 XR24 NV12 NV21 NV16 NV61 NV24 NV42
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 0
30 IN_FORMATS:
flags: immutable blob
blobs:
value:
01000000000000000a00000018000000
01000000400000005247313652473234
41523234585232344e5631324e563231
4e5631364e5636314e5632344e563432
ff030000000000000000000000000000
0000000000000000
in_formats blob decoded:
RG16: LINEAR
RG24: LINEAR
AR24: LINEAR
XR24: LINEAR
NV12: LINEAR
NV21: LINEAR
NV16: LINEAR
NV61: LINEAR
NV24: LINEAR
NV42: LINEAR
Frame buffers:
id size pitch
Geert Uytterhoeven (36):
MAINTAINER: Create entry for Renesas SH-Mobile DRM drivers
dt-bindings: display: Add Renesas SH-Mobile LCDC bindings
media: uapi: Add MEDIA_BUS_FMT_RGB666_2X9_BE format
drm: renesas: shmobile: Fix overlay plane disable
drm: renesas: shmobile: Fix ARGB32 overlay format typo
drm: renesas: shmobile: Correct encoder/connector types
drm: renesas: shmobile: Add support for Runtime PM
drm: renesas: shmobile: Restore indentation of
shmob_drm_setup_clocks()
drm: renesas: shmobile: Use %p4cc to print fourcc code
drm: renesas: shmobile: Add missing YCbCr formats
drm: renesas: shmobile: Improve shmob_drm_format_info table
drm: renesas: shmobile: Improve error handling
drm: renesas: shmobile: Convert to use devm_request_irq()
drm: renesas: shmobile: Remove custom plane destroy callback
drm: renesas: shmobile: Use drmm_universal_plane_alloc()
drm: renesas: shmobile: Embed drm_device in shmob_drm_device
drm: renesas: shmobile: Convert container helpers to static inline
functions
drm: renesas: shmobile: Replace .dev_private with container_of()
drm: renesas: shmobile: Use media bus formats in platform data
drm: renesas: shmobile: Move interface handling to connector setup
drm: renesas: shmobile: Unify plane allocation
drm: renesas: shmobile: Rename shmob_drm_crtc.crtc
drm: renesas: shmobile: Rename shmob_drm_connector.connector
drm: renesas: shmobile: Rename shmob_drm_plane.plane
drm: renesas: shmobile: Use drm_crtc_handle_vblank()
drm: renesas: shmobile: Move shmob_drm_crtc_finish_page_flip()
drm: renesas: shmobile: Wait for page flip when turning CRTC off
drm: renesas: shmobile: Turn vblank on/off when enabling/disabling
CRTC
drm: renesas: shmobile: Shutdown the display on remove
drm: renesas: shmobile: Cleanup encoder
drm: renesas: shmobile: Atomic conversion part 1
drm: renesas: shmobile: Atomic conversion part 2
drm: renesas: shmobile: Use suspend/resume helpers
drm: renesas: shmobile: Remove internal CRTC state tracking
drm: renesas: shmobile: Atomic conversion part 3
drm: renesas: shmobile: Add DT support
Laurent Pinchart (5):
drm: renesas: shmobile: Remove backlight support
drm: renesas: shmobile: Don't set display info width and height twice
drm: renesas: shmobile: Rename input clocks
drm: renesas: shmobile: Remove support for SYS panels
drm: renesas: shmobile: Use struct videomode in platform data
.../display/renesas,shmobile-lcdc.yaml | 130 ++++
.../media/v4l/subdev-formats.rst | 72 ++
MAINTAINERS | 13 +-
drivers/gpu/drm/renesas/shmobile/Kconfig | 3 +-
drivers/gpu/drm/renesas/shmobile/Makefile | 3 +-
.../renesas/shmobile/shmob_drm_backlight.c | 82 ---
.../renesas/shmobile/shmob_drm_backlight.h | 19 -
.../gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 650 ++++++++----------
.../gpu/drm/renesas/shmobile/shmob_drm_crtc.h | 27 +-
.../gpu/drm/renesas/shmobile/shmob_drm_drv.c | 180 +++--
.../gpu/drm/renesas/shmobile/shmob_drm_drv.h | 18 +-
.../gpu/drm/renesas/shmobile/shmob_drm_kms.c | 77 ++-
.../gpu/drm/renesas/shmobile/shmob_drm_kms.h | 9 +-
.../drm/renesas/shmobile/shmob_drm_plane.c | 326 +++++----
.../drm/renesas/shmobile/shmob_drm_plane.h | 5 +-
include/linux/platform_data/shmob_drm.h | 57 +-
include/uapi/linux/media-bus-format.h | 3 +-
17 files changed, 860 insertions(+), 814 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml
delete mode 100644 drivers/gpu/drm/renesas/shmobile/shmob_drm_backlight.c
delete mode 100644 drivers/gpu/drm/renesas/shmobile/shmob_drm_backlight.h
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: Hans Verkuil <hverkuil@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-media@xxxxxxxxxxxxxxx
Cc: linux-fbdev@xxxxxxxxxxxxxxx
Cc: linux-sh@xxxxxxxxxxxxxxx
--
2.34.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
