diff options
Diffstat (limited to 'recipes-kernel/linux/linux-toradex-upstream-6.6/0001-drm-bridge-lt8912b-Add-suspend-resume-support.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-toradex-upstream-6.6/0001-drm-bridge-lt8912b-Add-suspend-resume-support.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-toradex-upstream-6.6/0001-drm-bridge-lt8912b-Add-suspend-resume-support.patch b/recipes-kernel/linux/linux-toradex-upstream-6.6/0001-drm-bridge-lt8912b-Add-suspend-resume-support.patch new file mode 100644 index 0000000..347c4f2 --- /dev/null +++ b/recipes-kernel/linux/linux-toradex-upstream-6.6/0001-drm-bridge-lt8912b-Add-suspend-resume-support.patch @@ -0,0 +1,68 @@ +From 0b82a2b70f890e8dd7a46dfbfcce00bd7e434762 Mon Sep 17 00:00:00 2001 +From: Stefan Eichenberger <stefan.eichenberger@toradex.com> +Date: Wed, 15 Nov 2023 13:13:36 +0100 +Subject: [PATCH] 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. + +Upstream-Status: Backport [0b82a2b70f890e8dd7a46dfbfcce00bd7e434762] + +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 +--- + 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, +-- +2.40.1 + |