From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E962241C9D; Tue, 28 Nov 2023 21:10:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ipSUz+sV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B651FC41679; Tue, 28 Nov 2023 21:10:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701205812; bh=7za1AYdrZQgE/3nxRkalG+FZRo7O9oCwKa0+Edv+7BU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ipSUz+sV9gsMJHWvKlNEEVZQ9ffk2yfssJHzN/z6kzd4Zx0BeiQ2Nl39dPiFc2SN7 +0zzdekbzGyDM16TIcW1PjNL4D9HCQJwHtxTL1eoT/MofPSrIorhFPiREli15i5TVK t//pwOXMQskIXmL9QTJ97wueY8t6oNQbocKzfkF1rBEq6tVETCVqNtoP4tFOwK7ZlH ToxQApzG8KNl63C/zQ8EOfSh1u4qcrV1fMD3tssi61qJ+RnhVLoMPrIKFdyx6r/0iF 5EolfpR1fzI3+/39pR5nc5aJCO0D+aMm1J30eQ1magFMRSVaV2ZwrROuwVoyomh+JA FCJwVozsHgvIQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Denis Benato , "Luke D . Jones" , Jiri Kosina , Sasha Levin , jikos@kernel.org, benjamin.tissoires@redhat.com, linux-input@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 07/10] HID: hid-asus: reset the backlight brightness level on resume Date: Tue, 28 Nov 2023 16:09:56 -0500 Message-ID: <20231128211001.877333-7-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231128211001.877333-1-sashal@kernel.org> References: <20231128211001.877333-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 4.19.300 Content-Transfer-Encoding: 8bit From: Denis Benato [ 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 Signed-off-by: Luke D. Jones Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- 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 4dddf3ce32d73..12ad6493be8f4 100644 --- a/drivers/hid/hid-asus.c +++ b/drivers/hid/hid-asus.c @@ -614,6 +614,24 @@ 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); @@ -831,6 +849,7 @@ static struct hid_driver asus_driver = { .input_configured = asus_input_configured, #ifdef CONFIG_PM .reset_resume = asus_reset_resume, + .resume = asus_resume, #endif .raw_event = asus_raw_event }; -- 2.42.0