From: Stefan Eichenberger <[email protected]> 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 <[email protected]> Signed-off-by: Francesco Dolcini <[email protected]> --- drivers/gpu/drm/bridge/lontium-lt8912b.c | 28 ++++++++++++++++++++++++ 1 file changed, 28 insertions(+) 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, -- 2.25.1
