linux-toradex.git/drivers/gpu/drm/mcde/mcde_dsi.c, branch v5.19-rc1

drm/mcde: Make use of the helper function devm_platform_ioremap_resource()

2021-09-07T20:50:17+00:00

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20210831135602.4476-1-caihuoqing@baidu.com

Merge tag 'drm-misc-next-2021-07-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2021-07-30T04:52:00+00:00

drm-misc-next for v5.15:

UAPI Changes:
- Add modifiers for arm fixed rate compression.

Cross-subsystem Changes:
- Assorted dt binding fixes.
- Convert ssd1307fb to json-schema.
- Update a lot of irc channels to point to OFTC, as everyone moved there.
- Fix the same divide by zero for asilantfb, kyro, rivafb.

Core Changes:
- Document requirements for new atomic properties.
- Add drm_gem_fb_(begin/end)_cpu_access helpers, and use them in some drivers.
- Document drm_property_enum.value for bitfields.
- Add explicit _NO_ for MIPI_DSI flags that disable features.
- Assorted documentation fixes.
- Update fb_damage handling, and move drm_plane_enable_fb_damage_clips to core.
- Add logging and docs to RMFB ioctl.
- Assorted small fixes to dp_mst, master handling.
- Clarify drm lease usage.

Driver Changes:
- Assorted small fixes to panfrost, hibmc, bridge/nwl-dsi, rockchip, vc4.
- More drm -> linux irq conversions.
- Add support for some Logic Technologies and Multi-Inno panels.
- Expose phy-functionality for drm/rockchip, to allow controlling from the media subsystem.
- Add support for 2 AUO panels.
- Add damage handling to ssd1307fb.
- Improve FIFO handling on mxsfb.
- Assorted small fixes to vmwgfx, and bump version to 2.19 for the new ioctls.
- Improve sony acx424akp backlight handling.

Signed-off-by: Dave Airlie 

From: Maarten Lankhorst 
Link: https://patchwork.freedesktop.org/patch/msgid/a753221a-e23e-0dc4-7ca6-8c1b179738d0@linux.intel.com

drm/bridge: Centralize error message when bridge attach fails

2021-07-28T13:33:12+00:00

Being informed of a failure to attach a bridge is useful, and many
drivers prints an error message in that case. Move the message to
drm_bridge_attach() to avoid code duplication.

Suggested-by: Stephen Boyd 
Signed-off-by: Laurent Pinchart 
Reviewed-by: Tomi Valkeinen 
Reviewed-by: Jyri Sarha

Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next

2021-07-27T10:48:17+00:00

Required bump from v5.13-rc3 to v5.14-rc3, and to pick up sysfb compilation fixes.

Signed-off-by: Maarten Lankhorst

drm/dsi: Add _NO_ to MIPI_DSI_* flags disabling features

2021-07-27T07:48:24+00:00

Many of the DSI flags have names opposite to their actual effects,
e.g. MIPI_DSI_MODE_EOT_PACKET means that EoT packets will actually
be disabled. Fix this by including _NO_ in the flag names, e.g.
MIPI_DSI_MODE_NO_EOT_PACKET.

Signed-off-by: Nicolas Boichat 
Reviewed-by: Linus Walleij 
Reviewed-by: Robert Foss 
Reviewed-by: Laurent Pinchart 
Reviewed-by: Andrzej Hajda 
Reviewed-by: Xin Ji  # anx7625.c
Reviewed-by: Abhinav Kumar  # msm/dsi
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20210727094435.v3.1.I629b2366a6591410359c7fcf6d385b474b705ca2@changeid

Backmerge tag 'v5.13-rc7' into drm-next

2021-06-23T00:07:48+00:00

Backmerge Linux 5.13-rc7 to make some pulls from later bases apply,
and to bake in the conflicts so far.

drm/mcde: Fix off by 10^3 in calculation

2021-06-09T12:03:29+00:00

The calclulation of how many bytes we stuff into the
DSI pipeline for video mode panels is off by three
orders of magnitude because we did not account for the
fact that the DRM mode clock is in kilohertz rather
than hertz.

This used to be:
drm_mode_vrefresh(mode) * mode->htotal * mode->vtotal
which would become for example for s6e63m0:
60 x 514 x 831 = 25628040 Hz, but mode->clock is
25628 as it is in kHz.

This affects only the Samsung GT-I8190 "Golden" phone
right now since it is the only MCDE device with a video
mode display.

Curiously some specimen work with this code and wild
settings in the EOL and empty packets at the end of the
display, but I have noticed an eeire flicker until now.
Others were not so lucky and got black screens.

Cc: Ville Syrjälä 
Reported-by: Stephan Gerhold 
Fixes: 920dd1b1425b ("drm/mcde: Use mode->clock instead of reverse calculating it from the vrefresh")
Signed-off-by: Linus Walleij 
Tested-by: Stephan Gerhold 
Reviewed-by: Stephan Gerhold 
Link: https://patchwork.freedesktop.org/patch/msgid/20210608213318.3897858-1-linus.walleij@linaro.org

drm/mcde: Remove redundant error printing in mcde_dsi_probe()

2021-05-21T23:58:27+00:00

When devm_ioremap_resource() fails, a clear enough error message will be
printed by its subfunction __devm_ioremap_resource(). The error
information contains the device name, failure cause, and possibly resource
information.

Therefore, remove the error printing here to simplify code and reduce the
binary size.

Reported-by: Hulk Robot 
Signed-off-by: Zhen Lei 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20210511091344.4508-1-thunder.leizhen@huawei.com

drm/mcde/panel: Inverse misunderstood flag

2021-03-04T13:31:06+00:00

A recent patch renaming MIPI_DSI_MODE_EOT_PACKET to
MIPI_DSI_MODE_NO_EOT_PACKET brought to light the
misunderstanding in the current MCDE driver and all
its associated panel drivers that MIPI_DSI_MODE_EOT_PACKET
would mean "use EOT packet" when in fact it means the
reverse.

Fix it up by implementing the flag right in the MCDE
DSI driver and remove the flag from panels that actually
want the EOT packet.

Suggested-by: Nicolas Boichat 
Signed-off-by: Linus Walleij 
Reviewed-by: Nicolas Boichat 
Fixes: 5fc537bfd000 ("drm/mcde: Add new driver for ST-Ericsson MCDE")
Fixes: 899f24ed8d3a ("drm/panel: Add driver for Novatek NT35510-based panels")
Fixes: ac1d6d74884e ("drm/panel: Add driver for Samsung S6D16D0 panel")
Fixes: 435e06c06cb2 ("drm/panel: s6e63m0: Add DSI transport")
Fixes: 8152c2bfd780 ("drm/panel: Add driver for Sony ACX424AKP panel")
Link: https://patchwork.freedesktop.org/patch/msgid/20210304004138.1785057-1-linus.walleij@linaro.org

drm/mcde: Retry DSI read/write transactions

2020-08-15T10:14:18+00:00

The vendor driver makes a few retries on read DSI
transactions, something that is needed especially in
case of read (such as reading the panel MTP ID) while
the panel is running in video mode. This happens on
the Samsung s6e63m0 panel on the Golden device.

Retry reads and writes alike three times.

Signed-off-by: Linus Walleij 
Reviewed-by: Stephan Gerhold 
Cc: Stephan Gerhold 
Link: https://patchwork.freedesktop.org/patch/msgid/20200814194451.3494294-1-linus.walleij@linaro.org