From: Denis Benato benato.denis96@gmail.com
stable inclusion from stable-v6.6.8 commit 9fc2827c02425c1a74233acaa258e725043d7d59 bugzilla: https://gitee.com/openeuler/kernel/issues/I99K53
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 546edbd26cff7ae990e480a59150e801a06f77b1 ]
Some devices managed by this driver automatically set brightness to 0 before entering a suspended state and reset it back to a default brightness level after the resume: this has the effect of having the kernel report wrong brightness status after a sleep, and on some devices (like the Asus RC71L) that brightness is the intensity of LEDs directly facing the user.
Fix the above issue by setting back brightness to the level it had before entering a sleep state.
Signed-off-by: Denis Benato benato.denis96@gmail.com Signed-off-by: Luke D. Jones luke@ljones.dev Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: ZhangPeng zhangpeng362@huawei.com --- drivers/hid/hid-asus.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c index fd61dba88233..194a86cf30db 100644 --- a/drivers/hid/hid-asus.c +++ b/drivers/hid/hid-asus.c @@ -1000,6 +1000,24 @@ static int asus_start_multitouch(struct hid_device *hdev) return 0; }
+static int __maybe_unused asus_resume(struct hid_device *hdev) { + struct asus_drvdata *drvdata = hid_get_drvdata(hdev); + int ret = 0; + + if (drvdata->kbd_backlight) { + const u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, + drvdata->kbd_backlight->cdev.brightness }; + ret = asus_kbd_set_report(hdev, buf, sizeof(buf)); + if (ret < 0) { + hid_err(hdev, "Asus failed to set keyboard backlight: %d\n", ret); + goto asus_resume_err; + } + } + +asus_resume_err: + return ret; +} + static int __maybe_unused asus_reset_resume(struct hid_device *hdev) { struct asus_drvdata *drvdata = hid_get_drvdata(hdev); @@ -1294,6 +1312,7 @@ static struct hid_driver asus_driver = { .input_configured = asus_input_configured, #ifdef CONFIG_PM .reset_resume = asus_reset_resume, + .resume = asus_resume, #endif .event = asus_event, .raw_event = asus_raw_event