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Message-ID: <20241221055917.10555-8-kuurtb@gmail.com>
Date: Sat, 21 Dec 2024 00:59:04 -0500
From: Kurt Borja <kuurtb@...il.com>
To: platform-driver-x86@...r.kernel.org
Cc: ilpo.jarvinen@...ux.intel.com,
mario.limonciello@....com,
w_armin@....de,
hdegoede@...hat.com,
linux-kernel@...r.kernel.org,
Dell.Client.Kernel@...l.com,
Kurt Borja <kuurtb@...il.com>
Subject: [PATCH 07/20] alienware-wmi: Add a state container for LED control feature
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.
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.
Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
drivers/platform/x86/dell/alienware-wmi.c | 128 +++++++++++++---------
1 file changed, 76 insertions(+), 52 deletions(-)
diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
index 67cf376df0f5..4b68d64bd742 100644
--- a/drivers/platform/x86/dell/alienware-wmi.c
+++ b/drivers/platform/x86/dell/alienware-wmi.c
@@ -404,14 +404,19 @@ 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 struct platform_profile_handler pp_handler;
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
@@ -443,7 +448,7 @@ 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;
@@ -453,21 +458,21 @@ 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;
@@ -486,22 +491,32 @@ static int alienware_update_led(u8 location)
static ssize_t zone_show(struct device *dev, struct device_attribute *attr,
char *buf, u8 location)
{
+ struct color_platform *colors;
+ struct alienfx_priv *priv;
+
+ priv = dev_get_drvdata(dev);
+ 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 color_platform *colors;
+ struct alienfx_priv *priv;
int ret;
- ret = parse_rgb(buf, &colors[location]);
+ priv = dev_get_drvdata(dev);
+ colors = &priv->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;
}
@@ -539,9 +554,13 @@ 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;
+
+ 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");
@@ -551,8 +570,11 @@ static ssize_t lighting_control_state_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
+ struct alienfx_priv *priv;
u8 val;
+ priv = dev_get_drvdata(dev);
+
if (strcmp(buf, "booting\n") == 0)
val = LEGACY_BOOTING;
else if (strcmp(buf, "suspend\n") == 0)
@@ -562,9 +584,9 @@ 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;
}
@@ -621,43 +643,26 @@ static int wmax_brightness(int brightness)
static void global_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
+ struct alienfx_priv *priv;
int ret;
- global_brightness = brightness;
+
+ priv = container_of(led_cdev, struct alienfx_priv, global_led);
+ 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",
-};
-
-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;
+ struct alienfx_priv *priv;
- return led_classdev_register(&dev->dev, &global_led);
-}
+ priv = container_of(led_cdev, struct alienfx_priv, global_led);
-static void alienware_zone_exit(struct platform_device *dev)
-{
- led_classdev_unregister(&global_led);
+ return priv->global_brightness;
}
static acpi_status alienware_wmax_command(void *in_args, size_t in_size,
@@ -1106,6 +1111,32 @@ static void remove_thermal_profile(void)
/*
* Platform Driver
*/
+static int alienfx_probe(struct platform_device *pdev)
+{
+ struct alienfx_priv *priv;
+ struct led_classdev *leds;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ platform_set_drvdata(pdev, priv);
+
+ priv->pdev = pdev;
+
+ if (interface == WMAX)
+ priv->lighting_control_state = WMAX_RUNNING;
+ else if (interface == LEGACY)
+ priv->lighting_control_state = LEGACY_RUNNING;
+
+ leds = &priv->global_led;
+ leds->name = "alienware::global_brightness";
+ leds->brightness_set = global_led_set;
+ leds->brightness_get = global_led_get;
+ leds->max_brightness = 0x0F;
+
+ priv->global_brightness = priv->global_led.max_brightness;
+
+ return devm_led_classdev_register(&pdev->dev, &priv->global_led);
+}
+
static const struct attribute_group *alienfx_groups[] = {
&zone_attribute_group,
&hdmi_attribute_group,
@@ -1119,6 +1150,7 @@ static struct platform_driver platform_driver = {
.name = "alienware-wmi",
.dev_groups = alienfx_groups,
},
+ .probe = alienfx_probe,
};
static int __init alienware_wmi_init(void)
@@ -1166,15 +1198,8 @@ static int __init alienware_wmi_init(void)
goto fail_prep_thermal_profile;
}
- ret = alienware_zone_init(platform_device);
- if (ret)
- goto fail_prep_zones;
-
return 0;
-fail_prep_zones:
- alienware_zone_exit(platform_device);
- remove_thermal_profile();
fail_prep_thermal_profile:
platform_device_del(platform_device);
fail_platform_device2:
@@ -1189,7 +1214,6 @@ module_init(alienware_wmi_init);
static void __exit alienware_wmi_exit(void)
{
- alienware_zone_exit(platform_device);
remove_thermal_profile();
platform_device_unregister(platform_device);
platform_driver_unregister(&platform_driver);
--
2.47.1
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