mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-25 11:55:37 +00:00
Code Issues Releases Wiki Activity

drm/panel: Move AUX B116XW03 out of panel-edp back to panel-simple

Browse source 
In commit 5f04e7ce39 ("drm/panel-edp: Split eDP panels out of
panel-simple") I moved a pile of panels out of panel-simple driver
into the newly created panel-edp driver. One of those panels, however,
shouldn't have been moved.

As is clear from commit e35e305eff ("drm/panel: simple: Add AUO
B116XW03 panel support"), AUX B116XW03 is an LVDS panel. It's used in
exynos5250-snow and exynos5420-peach-pit where it's clear that the
panel is hooked up with LVDS. Furthermore, searching for datasheets I
found one that makes it clear that this panel is LVDS.

As far as I can tell, I got confused because in commit 88d3457ceb
("drm/panel: auo,b116xw03: fix flash backlight when power on") Jitao
Shi added "DRM_MODE_CONNECTOR_eDP". That seems wrong. Looking at the
downstream ChromeOS trees, it seems like some Mediatek boards are
using a panel that they call "auo,b116xw03" that's an eDP panel. The
best I can guess is that they actually have a different panel that has
similar timing. If so then the proper panel should be used or they
should switch to the generic "edp-panel" compatible.

When moving this back to panel-edp, I wasn't sure what to use for
.bus_flags and .bus_format and whether to add the extra "enable" delay
from commit 88d3457ceb ("drm/panel: auo,b116xw03: fix flash
backlight when power on"). I've added formats/flags/delays based on my
(inexpert) analysis of the datasheet. These are untested.

NOTE: if/when this is backported to stable, we might run into some
trouble. Specifically, before 474c162878 ("arm64: dts: mt8183:
jacuzzi: Move panel under aux-bus") this panel was used by
"mt8183-kukui-jacuzzi", which assumed it was an eDP panel. I don't
know what to suggest for that other than someone making up a bogus
panel for jacuzzi that's just for the stable channel.

Fixes: 88d3457ceb ("drm/panel: auo,b116xw03: fix flash backlight when power on")
Fixes: 5f04e7ce39 ("drm/panel-edp: Split eDP panels out of panel-simple")
Tested-by: Anton Bambura <jenneron@postmarketos.org>
Acked-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925150010.1.Iff672233861bcc4cf25a7ad0a81308adc3bda8a4@changeid
This commit is contained in:
Douglas Anderson 2023-09-25 15:00:11 -07:00
parent 7b821db951
commit ad3e33fe07
2 changed files with 35 additions and 29 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
drivers/gpu/drm/panel/panel-edp.c
View file

@ -976,32 +976,6 @@ static const struct panel_desc auo_b116xak01 = {
},
};
static const struct drm_display_mode auo_b116xw03_mode = {
.clock = 70589,
.hdisplay = 1366,
.hsync_start = 1366 + 40,
.hsync_end = 1366 + 40 + 40,
.htotal = 1366 + 40 + 40 + 32,
.vdisplay = 768,
.vsync_start = 768 + 10,
.vsync_end = 768 + 10 + 12,
.vtotal = 768 + 10 + 12 + 6,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc auo_b116xw03 = {
.modes = &auo_b116xw03_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
.delay = {
.enable = 400,
},
};
static const struct drm_display_mode auo_b133han05_mode = {
.clock = 142600,
.hdisplay = 1920,
@ -1725,9 +1699,6 @@ static const struct of_device_id platform_of_match[] = {
}, {
.compatible = "auo,b116xa01",
.data = &auo_b116xak01,
}, {
.compatible = "auo,b116xw03",
.data = &auo_b116xw03,
}, {
.compatible = "auo,b133han05",
.data = &auo_b133han05,

35
drivers/gpu/drm/panel/panel-simple.c
View file

@ -919,6 +919,38 @@ static const struct panel_desc auo_b101xtn01 = {
},
};
static const struct drm_display_mode auo_b116xw03_mode = {
.clock = 70589,
.hdisplay = 1366,
.hsync_start = 1366 + 40,
.hsync_end = 1366 + 40 + 40,
.htotal = 1366 + 40 + 40 + 32,
.vdisplay = 768,
.vsync_start = 768 + 10,
.vsync_end = 768 + 10 + 12,
.vtotal = 768 + 10 + 12 + 6,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};
static const struct panel_desc auo_b116xw03 = {
.modes = &auo_b116xw03_mode,
.num_modes = 1,
.bpc = 6,
.size = {
.width = 256,
.height = 144,
},
.delay = {
.prepare = 1,
.enable = 200,
.disable = 200,
.unprepare = 500,
},
.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
.bus_flags = DRM_BUS_FLAG_DE_HIGH,
.connector_type = DRM_MODE_CONNECTOR_LVDS,
};
static const struct display_timing auo_g070vvn01_timings = {
.pixelclock = { 33300000, 34209000, 45000000 },
.hactive = { 800, 800, 800 },
@ -4102,6 +4134,9 @@ static const struct of_device_id platform_of_match[] = {
}, {
.compatible = "auo,b101xtn01",
.data = &auo_b101xtn01,
}, {
.compatible = "auo,b116xw03",
.data = &auo_b116xw03,
}, {
.compatible = "auo,g070vvn01",
.data = &auo_g070vvn01,