diff options
| author | Stefan Eichenberger <stefan.eichenberger@toradex.com> | 2023-11-15 13:13:36 +0100 |
|---|---|---|
| committer | Robert Foss <rfoss@kernel.org> | 2023-12-04 13:59:47 +0100 |
| commit | 0b82a2b70f890e8dd7a46dfbfcce00bd7e434762 (patch) | |
| tree | bf4aee1d3f71c257138b8d5b74fa4cab8821bb34 /drivers | |
| parent | e4256751df4a0a3860f181588ee730dd19cb0c30 (diff) | |
drm/bridge: lt8912b: Add suspend/resume support
Add support for suspend and resume. The lt8912b will power off when
going into suspend and power on when resuming.
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231115121338.22959-2-francesco@dolcini.it
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/bridge/lontium-lt8912b.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c index 03532efb893b..097ab04234b7 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c @@ -634,6 +634,33 @@ static const struct drm_bridge_funcs lt8912_bridge_funcs = { .get_edid = lt8912_bridge_get_edid, }; +static int lt8912_bridge_resume(struct device *dev) +{ + struct lt8912 *lt = dev_get_drvdata(dev); + int ret; + + ret = lt8912_hard_power_on(lt); + if (ret) + return ret; + + ret = lt8912_soft_power_on(lt); + if (ret) + return ret; + + return lt8912_video_on(lt); +} + +static int lt8912_bridge_suspend(struct device *dev) +{ + struct lt8912 *lt = dev_get_drvdata(dev); + + lt8912_hard_power_off(lt); + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(lt8912_bridge_pm_ops, lt8912_bridge_suspend, lt8912_bridge_resume); + static int lt8912_parse_dt(struct lt8912 *lt) { struct gpio_desc *gp_reset; @@ -770,6 +797,7 @@ static struct i2c_driver lt8912_i2c_driver = { .driver = { .name = "lt8912", .of_match_table = lt8912_dt_match, + .pm = pm_sleep_ptr(<8912_bridge_pm_ops), }, .probe = lt8912_probe, .remove = lt8912_remove, |