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Mon, 03 Feb 2025 10:27:24 -0800 (PST) From: Kurt Borja To: platform-driver-x86@vger.kernel.org Cc: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , "Armin Wolf" , "Mario Limonciello" , "Hans de Goede" , Dell.Client.Kernel@dell.com, linux-kernel@vger.kernel.org, "Kurt Borja" Subject: [PATCH v8 01/14] platform/x86: alienware-wmi: Add a state container for LED control feature Date: Mon, 3 Feb 2025 13:27:00 -0500 Message-ID: <20250203182713.27446-2-kuurtb@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250203182713.27446-1-kuurtb@gmail.com> References: <20250203182713.27446-1-kuurtb@gmail.com> Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a state container for the "alienware-wmi" platform device and initialize it on the new alienfx_probe(). Migrate all LED control functions to use this state container to support upcoming file split. Additionally move the led_classdev registration to the platform driver probe and make it device managed. Drop alienware_zone_init() and alienware_zone_exit() because they are no longer needed and mimic the `quirks->num_zone > 0` check by failing the platform device probe. Reviewed-by: Armin Wolf Signed-off-by: Kurt Borja --- drivers/platform/x86/dell/alienware-wmi.c | 125 ++++++++++++---------- 1 file changed, 68 insertions(+), 57 deletions(-) diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c index e252e0cf47ef..ab86deb1adb9 100644 --- a/drivers/platform/x86/dell/alienware-wmi.c +++ b/drivers/platform/x86/dell/alienware-wmi.c @@ -413,13 +413,18 @@ struct wmax_u32_args { u8 arg3; }; +struct alienfx_priv { + struct platform_device *pdev; + struct led_classdev global_led; + struct color_platform colors[4]; + u8 global_brightness; + u8 lighting_control_state; +}; + static struct platform_device *platform_device; -static struct color_platform colors[4]; static enum wmax_thermal_mode supported_thermal_profiles[PLATFORM_PROFILE_LAST]; static u8 interface; -static u8 lighting_control_state; -static u8 global_brightness; /* * Helpers used for zone control @@ -451,7 +456,7 @@ static int parse_rgb(const char *buf, struct color_platform *colors) /* * Individual RGB zone control */ -static int alienware_update_led(u8 location) +static int alienware_update_led(struct alienfx_priv *priv, u8 location) { int method_id; acpi_status status; @@ -461,21 +466,21 @@ static int alienware_update_led(u8 location) struct wmax_led_args wmax_basic_args; if (interface == WMAX) { wmax_basic_args.led_mask = 1 << location; - wmax_basic_args.colors = colors[location]; - wmax_basic_args.state = lighting_control_state; + wmax_basic_args.colors = priv->colors[location]; + wmax_basic_args.state = priv->lighting_control_state; guid = WMAX_CONTROL_GUID; method_id = WMAX_METHOD_ZONE_CONTROL; input.length = sizeof(wmax_basic_args); input.pointer = &wmax_basic_args; } else { - legacy_args.colors = colors[location]; - legacy_args.brightness = global_brightness; + legacy_args.colors = priv->colors[location]; + legacy_args.brightness = priv->global_brightness; legacy_args.state = 0; - if (lighting_control_state == LEGACY_BOOTING || - lighting_control_state == LEGACY_SUSPEND) { + if (priv->lighting_control_state == LEGACY_BOOTING || + priv->lighting_control_state == LEGACY_SUSPEND) { guid = LEGACY_POWER_CONTROL_GUID; - legacy_args.state = lighting_control_state; + legacy_args.state = priv->lighting_control_state; } else guid = LEGACY_CONTROL_GUID; method_id = location + 1; @@ -494,22 +499,26 @@ static int alienware_update_led(u8 location) static ssize_t zone_show(struct device *dev, struct device_attribute *attr, char *buf, u8 location) { + struct alienfx_priv *priv = dev_get_drvdata(dev); + struct color_platform *colors = &priv->colors[location]; + return sprintf(buf, "red: %d, green: %d, blue: %d\n", - colors[location].red, colors[location].green, - colors[location].blue); + colors->red, colors->green, colors->blue); } static ssize_t zone_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count, u8 location) { + struct alienfx_priv *priv = dev_get_drvdata(dev); + struct color_platform *colors = &priv->colors[location]; int ret; - ret = parse_rgb(buf, &colors[location]); + ret = parse_rgb(buf, colors); if (ret) return ret; - ret = alienware_update_led(location); + ret = alienware_update_led(priv, location); return ret ? ret : count; } @@ -577,9 +586,11 @@ static ssize_t lighting_control_state_show(struct device *dev, struct device_attribute *attr, char *buf) { - if (lighting_control_state == LEGACY_BOOTING) + struct alienfx_priv *priv = dev_get_drvdata(dev); + + if (priv->lighting_control_state == LEGACY_BOOTING) return sysfs_emit(buf, "[booting] running suspend\n"); - else if (lighting_control_state == LEGACY_SUSPEND) + else if (priv->lighting_control_state == LEGACY_SUSPEND) return sysfs_emit(buf, "booting running [suspend]\n"); return sysfs_emit(buf, "booting [running] suspend\n"); @@ -589,6 +600,7 @@ static ssize_t lighting_control_state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { + struct alienfx_priv *priv = dev_get_drvdata(dev); u8 val; if (strcmp(buf, "booting\n") == 0) @@ -600,9 +612,9 @@ static ssize_t lighting_control_state_store(struct device *dev, else val = WMAX_RUNNING; - lighting_control_state = val; + priv->lighting_control_state = val; pr_debug("alienware-wmi: updated control state to %d\n", - lighting_control_state); + priv->lighting_control_state); return count; } @@ -662,46 +674,26 @@ static int wmax_brightness(int brightness) static void global_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) { + struct alienfx_priv *priv = container_of(led_cdev, struct alienfx_priv, + global_led); int ret; - global_brightness = brightness; + + priv->global_brightness = brightness; + if (interface == WMAX) ret = wmax_brightness(brightness); else - ret = alienware_update_led(0); + ret = alienware_update_led(priv, 0); if (ret) pr_err("LED brightness update failed\n"); } static enum led_brightness global_led_get(struct led_classdev *led_cdev) { - return global_brightness; -} - -static struct led_classdev global_led = { - .brightness_set = global_led_set, - .brightness_get = global_led_get, - .name = "alienware::global_brightness", -}; + struct alienfx_priv *priv = container_of(led_cdev, struct alienfx_priv, + global_led); -static int alienware_zone_init(struct platform_device *dev) -{ - if (interface == WMAX) { - lighting_control_state = WMAX_RUNNING; - } else if (interface == LEGACY) { - lighting_control_state = LEGACY_RUNNING; - } - global_led.max_brightness = 0x0F; - global_brightness = global_led.max_brightness; - - return led_classdev_register(&dev->dev, &global_led); -} - -static void alienware_zone_exit(struct platform_device *dev) -{ - if (!quirks->num_zones) - return; - - led_classdev_unregister(&global_led); + return priv->global_brightness; } static acpi_status alienware_wmax_command(void *in_args, size_t in_size, @@ -1157,6 +1149,33 @@ static int create_thermal_profile(struct platform_device *platform_device) /* * Platform Driver */ +static int alienfx_probe(struct platform_device *pdev) +{ + struct alienfx_priv *priv; + + if (!quirks->num_zones) + return -ENODEV; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + if (interface == WMAX) + priv->lighting_control_state = WMAX_RUNNING; + else + priv->lighting_control_state = LEGACY_RUNNING; + + priv->pdev = pdev; + priv->global_led.name = "alienware::global_brightness"; + priv->global_led.brightness_set = global_led_set; + priv->global_led.brightness_get = global_led_get; + priv->global_led.max_brightness = 0x0F; + priv->global_brightness = priv->global_led.max_brightness; + platform_set_drvdata(pdev, priv); + + return devm_led_classdev_register(&pdev->dev, &priv->global_led); +} + static const struct attribute_group *alienfx_groups[] = { &zone_attribute_group, &hdmi_attribute_group, @@ -1170,6 +1189,7 @@ static struct platform_driver platform_driver = { .name = "alienware-wmi", .dev_groups = alienfx_groups, }, + .probe = alienfx_probe, }; static int __init alienware_wmi_init(void) @@ -1217,16 +1237,8 @@ static int __init alienware_wmi_init(void) goto fail_prep_thermal_profile; } - if (quirks->num_zones > 0) { - ret = alienware_zone_init(platform_device); - if (ret) - goto fail_prep_zones; - } - return 0; -fail_prep_zones: - alienware_zone_exit(platform_device); fail_prep_thermal_profile: platform_device_del(platform_device); fail_platform_device2: @@ -1241,7 +1253,6 @@ module_init(alienware_wmi_init); static void __exit alienware_wmi_exit(void) { - alienware_zone_exit(platform_device); platform_device_unregister(platform_device); platform_driver_unregister(&platform_driver); }