korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-06 10:34:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/panel/raspberrypi-touchscreen: Initialise the bridge in prepare

Browse Source 
The panel has a prepare call which is before video starts, and an
enable call which is after.
The Toshiba bridge should be configured before video, so move
the relevant power and initialisation calls to prepare.

Fixes: 2f733d6194 ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-3-stefan.wahren@i2se.com
This commit is contained in:
Dave Stevenson 2022-04-15 18:25:13 +02:00 committed by Maxime Ripard
parent f92055ae0a
commit 5f18c0782b
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
View File

@ -265,7 +265,7 @@ static int rpi_touchscreen_noop(struct drm_panel *panel)
return 0;
}
static int rpi_touchscreen_enable(struct drm_panel *panel)
static int rpi_touchscreen_prepare(struct drm_panel *panel)
{
struct rpi_touchscreen *ts = panel_to_ts(panel);
int i;
@ -295,6 +295,13 @@ static int rpi_touchscreen_enable(struct drm_panel *panel)
rpi_touchscreen_write(ts, DSI_STARTDSI, 0x01);
msleep(100);
return 0;
}
static int rpi_touchscreen_enable(struct drm_panel *panel)
{
struct rpi_touchscreen *ts = panel_to_ts(panel);
/* Turn on the backlight. */
rpi_touchscreen_i2c_write(ts, REG_PWM, 255);
@ -349,7 +356,7 @@ static int rpi_touchscreen_get_modes(struct drm_panel *panel,
static const struct drm_panel_funcs rpi_touchscreen_funcs = {
.disable = rpi_touchscreen_disable,
.unprepare = rpi_touchscreen_noop,
.prepare = rpi_touchscreen_noop,
.prepare = rpi_touchscreen_prepare,
.enable = rpi_touchscreen_enable,
.get_modes = rpi_touchscreen_get_modes,
};