Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751521AbdIWQYI (ORCPT ); Sat, 23 Sep 2017 12:24:08 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:36678 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750778AbdIWQYG (ORCPT ); Sat, 23 Sep 2017 12:24:06 -0400 X-Google-Smtp-Source: AOwi7QAIgirNpIVGATliQEwyCnCDiHt65OGnAQM834kxp9iog3PIIdJYsjeh9JU1OViSuzhFLbGlQg== From: =?UTF-8?q?Maxime=20Belleng=C3=A9?= To: Corentin Chary , Darren Hart , Andy Shevchenko , acpi4asus-user@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Maxime=20Belleng=C3=A9?= Subject: [PATCH v2] Asus WMI : Add lightbar led support Date: Sat, 23 Sep 2017 18:23:37 +0200 Message-Id: <20170923162337.2748-1-maxime.bellenge@gmail.com> X-Mailer: git-send-email 2.13.5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3917 Lines: 127 Some asus laptops (ROG series for example) are provided with a lightbar behind the monitor. This patch make possible to switch it on and off. This lightbar works exactly as any other led. V2 : fix whitespaces and typo Signed-off-by: Maxime Bellengé --- drivers/platform/x86/asus-wmi.c | 63 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 709e3a67391a..6837e7fa52ba 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -119,6 +119,7 @@ MODULE_LICENSE("GPL"); #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */ +#define ASUS_WMI_DEVID_LIGHTBAR 0x00050025 /* Misc */ #define ASUS_WMI_DEVID_CAMERA 0x00060013 @@ -148,6 +149,7 @@ MODULE_LICENSE("GPL"); #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 +#define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F #define ASUS_FAN_DESC "cpu_fan" #define ASUS_FAN_MFUN 0x13 @@ -222,10 +224,13 @@ struct asus_wmi { int tpd_led_wk; struct led_classdev kbd_led; int kbd_led_wk; + struct led_classdev lightbar_led; + int lightbar_led_wk; struct workqueue_struct *led_workqueue; struct work_struct tpd_led_work; struct work_struct kbd_led_work; struct work_struct wlan_led_work; + struct work_struct lightbar_led_work; struct asus_rfkill wlan; struct asus_rfkill bluetooth; @@ -567,6 +572,48 @@ static enum led_brightness wlan_led_get(struct led_classdev *led_cdev) return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK; } +static void lightbar_led_update(struct work_struct *work) +{ + int ctrl_param; + struct asus_wmi *asus; + + asus = container_of(work, struct asus_wmi, lightbar_led_work); + + ctrl_param = asus->lightbar_led_wk; + asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL); +} + +static void lightbar_led_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct asus_wmi *asus; + + asus = container_of(led_cdev, struct asus_wmi, lightbar_led); + + asus->lightbar_led_wk = !!value; + queue_work(asus->led_workqueue, &asus->lightbar_led_work); +} + +static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev) +{ + struct asus_wmi *asus; + u32 result; + + asus = container_of(led_cdev, struct asus_wmi, lightbar_led); + asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); + + return result & ASUS_WMI_DSTS_LIGHTBAR_MASK; +} + +static int lightbar_led_presence(struct asus_wmi *asus) +{ + u32 result; + + asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result); + + return result & ASUS_WMI_DSTS_PRESENCE_BIT; +} + static void asus_wmi_led_exit(struct asus_wmi *asus) { if (!IS_ERR_OR_NULL(asus->kbd_led.dev)) @@ -575,6 +622,8 @@ static void asus_wmi_led_exit(struct asus_wmi *asus) led_classdev_unregister(&asus->tpd_led); if (!IS_ERR_OR_NULL(asus->wlan_led.dev)) led_classdev_unregister(&asus->wlan_led); + if (!IS_ERR_OR_NULL(asus->lightbar_led.dev)) + led_classdev_unregister(&asus->lightbar_led); if (asus->led_workqueue) destroy_workqueue(asus->led_workqueue); } @@ -630,6 +679,20 @@ static int asus_wmi_led_init(struct asus_wmi *asus) rv = led_classdev_register(&asus->platform_device->dev, &asus->wlan_led); + if (rv) + goto error; + } + + if (lightbar_led_presence(asus)) { + INIT_WORK(&asus->lightbar_led_work, lightbar_led_update); + + asus->lightbar_led.name = "asus::lightbar"; + asus->lightbar_led.brightness_set = lightbar_led_set; + asus->lightbar_led.brightness_get = lightbar_led_get; + asus->lightbar_led.max_brightness = 1; + + rv = led_classdev_register(&asus->platform_device->dev, + &asus->lightbar_led); } error: -- 2.13.5