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Fri, 07 Feb 2025 07:46:47 -0800 (PST) From: Kurt Borja To: platform-driver-x86@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , "Armin Wolf" , "Mario Limonciello" , "Hans de Goede" , Dell.Client.Kernel@dell.com, linux-kernel@vger.kernel.org, "Kurt Borja" Subject: [PATCH v10 01/14] platform/x86: alienware-wmi: Add a state container for LED control feature Date: Fri, 7 Feb 2025 10:45:57 -0500 Message-ID: <20250207154610.13675-2-kuurtb@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250207154610.13675-1-kuurtb@gmail.com> References: <20250207154610.13675-1-kuurtb@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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/x= 86/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; }; =20 +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]; =20 static u8 interface; -static u8 lighting_control_state; -static u8 global_brightness; =20 /* * Helpers used for zone control @@ -451,7 +456,7 @@ static int parse_rgb(const char *buf, struct color_plat= form *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 =3D=3D WMAX) { wmax_basic_args.led_mask =3D 1 << location; - wmax_basic_args.colors =3D colors[location]; - wmax_basic_args.state =3D lighting_control_state; + wmax_basic_args.colors =3D priv->colors[location]; + wmax_basic_args.state =3D priv->lighting_control_state; guid =3D WMAX_CONTROL_GUID; method_id =3D WMAX_METHOD_ZONE_CONTROL; =20 input.length =3D sizeof(wmax_basic_args); input.pointer =3D &wmax_basic_args; } else { - legacy_args.colors =3D colors[location]; - legacy_args.brightness =3D global_brightness; + legacy_args.colors =3D priv->colors[location]; + legacy_args.brightness =3D priv->global_brightness; legacy_args.state =3D 0; - if (lighting_control_state =3D=3D LEGACY_BOOTING || - lighting_control_state =3D=3D LEGACY_SUSPEND) { + if (priv->lighting_control_state =3D=3D LEGACY_BOOTING || + priv->lighting_control_state =3D=3D LEGACY_SUSPEND) { guid =3D LEGACY_POWER_CONTROL_GUID; - legacy_args.state =3D lighting_control_state; + legacy_args.state =3D priv->lighting_control_state; } else guid =3D LEGACY_CONTROL_GUID; method_id =3D 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 =3D dev_get_drvdata(dev); + struct color_platform *colors =3D &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); =20 } =20 static ssize_t zone_store(struct device *dev, struct device_attribute *att= r, const char *buf, size_t count, u8 location) { + struct alienfx_priv *priv =3D dev_get_drvdata(dev); + struct color_platform *colors =3D &priv->colors[location]; int ret; =20 - ret =3D parse_rgb(buf, &colors[location]); + ret =3D parse_rgb(buf, colors); if (ret) return ret; =20 - ret =3D alienware_update_led(location); + ret =3D alienware_update_led(priv, location); =20 return ret ? ret : count; } @@ -577,9 +586,11 @@ static ssize_t lighting_control_state_show(struct devi= ce *dev, struct device_attribute *attr, char *buf) { - if (lighting_control_state =3D=3D LEGACY_BOOTING) + struct alienfx_priv *priv =3D dev_get_drvdata(dev); + + if (priv->lighting_control_state =3D=3D LEGACY_BOOTING) return sysfs_emit(buf, "[booting] running suspend\n"); - else if (lighting_control_state =3D=3D LEGACY_SUSPEND) + else if (priv->lighting_control_state =3D=3D LEGACY_SUSPEND) return sysfs_emit(buf, "booting running [suspend]\n"); =20 return sysfs_emit(buf, "booting [running] suspend\n"); @@ -589,6 +600,7 @@ static ssize_t lighting_control_state_store(struct devi= ce *dev, struct device_attribute *attr, const char *buf, size_t count) { + struct alienfx_priv *priv =3D dev_get_drvdata(dev); u8 val; =20 if (strcmp(buf, "booting\n") =3D=3D 0) @@ -600,9 +612,9 @@ static ssize_t lighting_control_state_store(struct devi= ce *dev, else val =3D WMAX_RUNNING; =20 - lighting_control_state =3D val; + priv->lighting_control_state =3D val; pr_debug("alienware-wmi: updated control state to %d\n", - lighting_control_state); + priv->lighting_control_state); =20 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 =3D container_of(led_cdev, struct alienfx_priv, + global_led); int ret; - global_brightness =3D brightness; + + priv->global_brightness =3D brightness; + if (interface =3D=3D WMAX) ret =3D wmax_brightness(brightness); else - ret =3D alienware_update_led(0); + ret =3D alienware_update_led(priv, 0); if (ret) pr_err("LED brightness update failed\n"); } =20 static enum led_brightness global_led_get(struct led_classdev *led_cdev) { - return global_brightness; -} - -static struct led_classdev global_led =3D { - .brightness_set =3D global_led_set, - .brightness_get =3D global_led_get, - .name =3D "alienware::global_brightness", -}; + struct alienfx_priv *priv =3D container_of(led_cdev, struct alienfx_priv, + global_led); =20 -static int alienware_zone_init(struct platform_device *dev) -{ - if (interface =3D=3D WMAX) { - lighting_control_state =3D WMAX_RUNNING; - } else if (interface =3D=3D LEGACY) { - lighting_control_state =3D LEGACY_RUNNING; - } - global_led.max_brightness =3D 0x0F; - global_brightness =3D 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; } =20 static acpi_status alienware_wmax_command(void *in_args, size_t in_size, @@ -1157,6 +1149,33 @@ static int create_thermal_profile(struct platform_de= vice *platform_device) /* * Platform Driver */ +static int alienfx_probe(struct platform_device *pdev) +{ + struct alienfx_priv *priv; + + if (!quirks->num_zones) + return -ENODEV; + + priv =3D devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + if (interface =3D=3D WMAX) + priv->lighting_control_state =3D WMAX_RUNNING; + else + priv->lighting_control_state =3D LEGACY_RUNNING; + + priv->pdev =3D pdev; + priv->global_led.name =3D "alienware::global_brightness"; + priv->global_led.brightness_set =3D global_led_set; + priv->global_led.brightness_get =3D global_led_get; + priv->global_led.max_brightness =3D 0x0F; + priv->global_brightness =3D 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[] =3D { &zone_attribute_group, &hdmi_attribute_group, @@ -1170,6 +1189,7 @@ static struct platform_driver platform_driver =3D { .name =3D "alienware-wmi", .dev_groups =3D alienfx_groups, }, + .probe =3D alienfx_probe, }; =20 static int __init alienware_wmi_init(void) @@ -1217,16 +1237,8 @@ static int __init alienware_wmi_init(void) goto fail_prep_thermal_profile; } =20 - if (quirks->num_zones > 0) { - ret =3D alienware_zone_init(platform_device); - if (ret) - goto fail_prep_zones; - } - return 0; =20 -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); =20 static void __exit alienware_wmi_exit(void) { - alienware_zone_exit(platform_device); platform_device_unregister(platform_device); platform_driver_unregister(&platform_driver); } --=20 2.48.1