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[75.164.192.68]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2164419d02dsm45530625ad.268.2024.12.10.13.01.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Dec 2024 13:01:06 -0800 (PST) From: "Gerecke, Jason" X-Google-Original-From: "Gerecke, Jason" To: linux-input@vger.kernel.org, Jiri Kosina , Benjamin Tissoires Cc: Ping Cheng , Joshua Dickens , Erin Skomra , Peter Hutterer , Jason Gerecke Subject: [PATCH 2/2] HID: wacom: Status luminance properties should set brightness of all LEDs Date: Tue, 10 Dec 2024 13:00:59 -0800 Message-ID: <20241210210059.87780-2-jason.gerecke@wacom.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241210210059.87780-1-jason.gerecke@wacom.com> References: <20241210210059.87780-1-jason.gerecke@wacom.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jason Gerecke The wacom driver has (deprecated) sysfs properties `status0_luminance` and `status1_luminance` that are used to control the low- and high- level brightness values (llv and hlv) of the status LEDs. These two properties had an effect on /all/ of the status LEDs. After our driver switched to exposing each status LED individually through the LED class, this behavior changed. These controls started having only a temporary effect on the currently-lit LED. If a trigger changed the current LED, the driver would switch the brightness back to the llv/hlv values stored per-LED. (The code's current behavior of updating the "global" e.g. `wacom->led.llv` values has essentially no effect because those values are only used at initialization time). This commit restores the original behavior by ensuring these properties update the per-LED brightness for all LEDs. Signed-off-by: Jason Gerecke --- drivers/hid/wacom_sys.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index 5689bb6fcb264..8125383932ec7 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -1084,6 +1084,17 @@ static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest, mutex_lock(&wacom->lock); *dest = value & 0x7f; + for (unsigned int i = 0; i < wacom->led.count; i++) { + struct wacom_group_leds *group = &wacom->led.groups[i]; + + for (unsigned int j = 0; j < group->count; j++) { + if (dest == &wacom->led.llv) + group->leds[j].llv = *dest; + else if (dest == &wacom->led.hlv) + group->leds[j].hlv = *dest; + } + } + err = wacom_led_control(wacom); mutex_unlock(&wacom->lock);