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Diffstat (limited to 'drivers/platform/x86/dell/alienware-wmi.c')
-rw-r--r--drivers/platform/x86/dell/alienware-wmi.c853
1 files changed, 853 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
new file mode 100644
index 000000000000..5bb2859c8285
--- /dev/null
+++ b/drivers/platform/x86/dell/alienware-wmi.c
@@ -0,0 +1,853 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Alienware AlienFX control
+ *
+ * Copyright (C) 2014 Dell Inc <mario_limonciello@dell.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/dmi.h>
+#include <linux/leds.h>
+
+#define LEGACY_CONTROL_GUID "A90597CE-A997-11DA-B012-B622A1EF5492"
+#define LEGACY_POWER_CONTROL_GUID "A80593CE-A997-11DA-B012-B622A1EF5492"
+#define WMAX_CONTROL_GUID "A70591CE-A997-11DA-B012-B622A1EF5492"
+
+#define WMAX_METHOD_HDMI_SOURCE 0x1
+#define WMAX_METHOD_HDMI_STATUS 0x2
+#define WMAX_METHOD_BRIGHTNESS 0x3
+#define WMAX_METHOD_ZONE_CONTROL 0x4
+#define WMAX_METHOD_HDMI_CABLE 0x5
+#define WMAX_METHOD_AMPLIFIER_CABLE 0x6
+#define WMAX_METHOD_DEEP_SLEEP_CONTROL 0x0B
+#define WMAX_METHOD_DEEP_SLEEP_STATUS 0x0C
+
+MODULE_AUTHOR("Mario Limonciello <mario_limonciello@dell.com>");
+MODULE_DESCRIPTION("Alienware special feature control");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("wmi:" LEGACY_CONTROL_GUID);
+MODULE_ALIAS("wmi:" WMAX_CONTROL_GUID);
+
+enum INTERFACE_FLAGS {
+ LEGACY,
+ WMAX,
+};
+
+enum LEGACY_CONTROL_STATES {
+ LEGACY_RUNNING = 1,
+ LEGACY_BOOTING = 0,
+ LEGACY_SUSPEND = 3,
+};
+
+enum WMAX_CONTROL_STATES {
+ WMAX_RUNNING = 0xFF,
+ WMAX_BOOTING = 0,
+ WMAX_SUSPEND = 3,
+};
+
+struct quirk_entry {
+ u8 num_zones;
+ u8 hdmi_mux;
+ u8 amplifier;
+ u8 deepslp;
+};
+
+static struct quirk_entry *quirks;
+
+
+static struct quirk_entry quirk_inspiron5675 = {
+ .num_zones = 2,
+ .hdmi_mux = 0,
+ .amplifier = 0,
+ .deepslp = 0,
+};
+
+static struct quirk_entry quirk_unknown = {
+ .num_zones = 2,
+ .hdmi_mux = 0,
+ .amplifier = 0,
+ .deepslp = 0,
+};
+
+static struct quirk_entry quirk_x51_r1_r2 = {
+ .num_zones = 3,
+ .hdmi_mux = 0,
+ .amplifier = 0,
+ .deepslp = 0,
+};
+
+static struct quirk_entry quirk_x51_r3 = {
+ .num_zones = 4,
+ .hdmi_mux = 0,
+ .amplifier = 1,
+ .deepslp = 0,
+};
+
+static struct quirk_entry quirk_asm100 = {
+ .num_zones = 2,
+ .hdmi_mux = 1,
+ .amplifier = 0,
+ .deepslp = 0,
+};
+
+static struct quirk_entry quirk_asm200 = {
+ .num_zones = 2,
+ .hdmi_mux = 1,
+ .amplifier = 0,
+ .deepslp = 1,
+};
+
+static struct quirk_entry quirk_asm201 = {
+ .num_zones = 2,
+ .hdmi_mux = 1,
+ .amplifier = 1,
+ .deepslp = 1,
+};
+
+static int __init dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
+static const struct dmi_system_id alienware_quirks[] __initconst = {
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware X51 R3",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R3"),
+ },
+ .driver_data = &quirk_x51_r3,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware X51 R2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R2"),
+ },
+ .driver_data = &quirk_x51_r1_r2,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware X51 R1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51"),
+ },
+ .driver_data = &quirk_x51_r1_r2,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware ASM100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ASM100"),
+ },
+ .driver_data = &quirk_asm100,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware ASM200",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ASM200"),
+ },
+ .driver_data = &quirk_asm200,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware ASM201",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ASM201"),
+ },
+ .driver_data = &quirk_asm201,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inc. Inspiron 5675",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5675"),
+ },
+ .driver_data = &quirk_inspiron5675,
+ },
+ {}
+};
+
+struct color_platform {
+ u8 blue;
+ u8 green;
+ u8 red;
+} __packed;
+
+struct platform_zone {
+ u8 location;
+ struct device_attribute *attr;
+ struct color_platform colors;
+};
+
+struct wmax_brightness_args {
+ u32 led_mask;
+ u32 percentage;
+};
+
+struct wmax_basic_args {
+ u8 arg;
+};
+
+struct legacy_led_args {
+ struct color_platform colors;
+ u8 brightness;
+ u8 state;
+} __packed;
+
+struct wmax_led_args {
+ u32 led_mask;
+ struct color_platform colors;
+ u8 state;
+} __packed;
+
+static struct platform_device *platform_device;
+static struct device_attribute *zone_dev_attrs;
+static struct attribute **zone_attrs;
+static struct platform_zone *zone_data;
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = "alienware-wmi",
+ }
+};
+
+static struct attribute_group zone_attribute_group = {
+ .name = "rgb_zones",
+};
+
+static u8 interface;
+static u8 lighting_control_state;
+static u8 global_brightness;
+
+/*
+ * Helpers used for zone control
+ */
+static int parse_rgb(const char *buf, struct platform_zone *zone)
+{
+ long unsigned int rgb;
+ int ret;
+ union color_union {
+ struct color_platform cp;
+ int package;
+ } repackager;
+
+ ret = kstrtoul(buf, 16, &rgb);
+ if (ret)
+ return ret;
+
+ /* RGB triplet notation is 24-bit hexadecimal */
+ if (rgb > 0xFFFFFF)
+ return -EINVAL;
+
+ repackager.package = rgb & 0x0f0f0f0f;
+ pr_debug("alienware-wmi: r: %d g:%d b: %d\n",
+ repackager.cp.red, repackager.cp.green, repackager.cp.blue);
+ zone->colors = repackager.cp;
+ return 0;
+}
+
+static struct platform_zone *match_zone(struct device_attribute *attr)
+{
+ u8 zone;
+
+ for (zone = 0; zone < quirks->num_zones; zone++) {
+ if ((struct device_attribute *)zone_data[zone].attr == attr) {
+ pr_debug("alienware-wmi: matched zone location: %d\n",
+ zone_data[zone].location);
+ return &zone_data[zone];
+ }
+ }
+ return NULL;
+}
+
+/*
+ * Individual RGB zone control
+ */
+static int alienware_update_led(struct platform_zone *zone)
+{
+ int method_id;
+ acpi_status status;
+ char *guid;
+ struct acpi_buffer input;
+ struct legacy_led_args legacy_args;
+ struct wmax_led_args wmax_basic_args;
+ if (interface == WMAX) {
+ wmax_basic_args.led_mask = 1 << zone->location;
+ wmax_basic_args.colors = zone->colors;
+ wmax_basic_args.state = lighting_control_state;
+ guid = WMAX_CONTROL_GUID;
+ method_id = WMAX_METHOD_ZONE_CONTROL;
+
+ input.length = (acpi_size) sizeof(wmax_basic_args);
+ input.pointer = &wmax_basic_args;
+ } else {
+ legacy_args.colors = zone->colors;
+ legacy_args.brightness = global_brightness;
+ legacy_args.state = 0;
+ if (lighting_control_state == LEGACY_BOOTING ||
+ lighting_control_state == LEGACY_SUSPEND) {
+ guid = LEGACY_POWER_CONTROL_GUID;
+ legacy_args.state = lighting_control_state;
+ } else
+ guid = LEGACY_CONTROL_GUID;
+ method_id = zone->location + 1;
+
+ input.length = (acpi_size) sizeof(legacy_args);
+ input.pointer = &legacy_args;
+ }
+ pr_debug("alienware-wmi: guid %s method %d\n", guid, method_id);
+
+ status = wmi_evaluate_method(guid, 0, method_id, &input, NULL);
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: zone set failure: %u\n", status);
+ return ACPI_FAILURE(status);
+}
+
+static ssize_t zone_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct platform_zone *target_zone;
+ target_zone = match_zone(attr);
+ if (target_zone == NULL)
+ return sprintf(buf, "red: -1, green: -1, blue: -1\n");
+ return sprintf(buf, "red: %d, green: %d, blue: %d\n",
+ target_zone->colors.red,
+ target_zone->colors.green, target_zone->colors.blue);
+
+}
+
+static ssize_t zone_set(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct platform_zone *target_zone;
+ int ret;
+ target_zone = match_zone(attr);
+ if (target_zone == NULL) {
+ pr_err("alienware-wmi: invalid target zone\n");
+ return 1;
+ }
+ ret = parse_rgb(buf, target_zone);
+ if (ret)
+ return ret;
+ ret = alienware_update_led(target_zone);
+ return ret ? ret : count;
+}
+
+/*
+ * LED Brightness (Global)
+ */
+static int wmax_brightness(int brightness)
+{
+ acpi_status status;
+ struct acpi_buffer input;
+ struct wmax_brightness_args args = {
+ .led_mask = 0xFF,
+ .percentage = brightness,
+ };
+ input.length = (acpi_size) sizeof(args);
+ input.pointer = &args;
+ status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0,
+ WMAX_METHOD_BRIGHTNESS, &input, NULL);
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: brightness set failure: %u\n", status);
+ return ACPI_FAILURE(status);
+}
+
+static void global_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ int ret;
+ global_brightness = brightness;
+ if (interface == WMAX)
+ ret = wmax_brightness(brightness);
+ else
+ ret = alienware_update_led(&zone_data[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",
+};
+
+/*
+ * Lighting control state device attribute (Global)
+ */
+static ssize_t show_control_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (lighting_control_state == LEGACY_BOOTING)
+ return scnprintf(buf, PAGE_SIZE, "[booting] running suspend\n");
+ else if (lighting_control_state == LEGACY_SUSPEND)
+ return scnprintf(buf, PAGE_SIZE, "booting running [suspend]\n");
+ return scnprintf(buf, PAGE_SIZE, "booting [running] suspend\n");
+}
+
+static ssize_t store_control_state(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ long unsigned int val;
+ if (strcmp(buf, "booting\n") == 0)
+ val = LEGACY_BOOTING;
+ else if (strcmp(buf, "suspend\n") == 0)
+ val = LEGACY_SUSPEND;
+ else if (interface == LEGACY)
+ val = LEGACY_RUNNING;
+ else
+ val = WMAX_RUNNING;
+ lighting_control_state = val;
+ pr_debug("alienware-wmi: updated control state to %d\n",
+ lighting_control_state);
+ return count;
+}
+
+static DEVICE_ATTR(lighting_control_state, 0644, show_control_state,
+ store_control_state);
+
+static int alienware_zone_init(struct platform_device *dev)
+{
+ u8 zone;
+ char buffer[10];
+ char *name;
+
+ 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;
+
+ /*
+ * - zone_dev_attrs num_zones + 1 is for individual zones and then
+ * null terminated
+ * - zone_attrs num_zones + 2 is for all attrs in zone_dev_attrs +
+ * the lighting control + null terminated
+ * - zone_data num_zones is for the distinct zones
+ */
+ zone_dev_attrs =
+ kcalloc(quirks->num_zones + 1, sizeof(struct device_attribute),
+ GFP_KERNEL);
+ if (!zone_dev_attrs)
+ return -ENOMEM;
+
+ zone_attrs =
+ kcalloc(quirks->num_zones + 2, sizeof(struct attribute *),
+ GFP_KERNEL);
+ if (!zone_attrs)
+ return -ENOMEM;
+
+ zone_data =
+ kcalloc(quirks->num_zones, sizeof(struct platform_zone),
+ GFP_KERNEL);
+ if (!zone_data)
+ return -ENOMEM;
+
+ for (zone = 0; zone < quirks->num_zones; zone++) {
+ sprintf(buffer, "zone%02hhX", zone);
+ name = kstrdup(buffer, GFP_KERNEL);
+ if (name == NULL)
+ return 1;
+ sysfs_attr_init(&zone_dev_attrs[zone].attr);
+ zone_dev_attrs[zone].attr.name = name;
+ zone_dev_attrs[zone].attr.mode = 0644;
+ zone_dev_attrs[zone].show = zone_show;
+ zone_dev_attrs[zone].store = zone_set;
+ zone_data[zone].location = zone;
+ zone_attrs[zone] = &zone_dev_attrs[zone].attr;
+ zone_data[zone].attr = &zone_dev_attrs[zone];
+ }
+ zone_attrs[quirks->num_zones] = &dev_attr_lighting_control_state.attr;
+ zone_attribute_group.attrs = zone_attrs;
+
+ led_classdev_register(&dev->dev, &global_led);
+
+ return sysfs_create_group(&dev->dev.kobj, &zone_attribute_group);
+}
+
+static void alienware_zone_exit(struct platform_device *dev)
+{
+ u8 zone;
+
+ sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group);
+ led_classdev_unregister(&global_led);
+ if (zone_dev_attrs) {
+ for (zone = 0; zone < quirks->num_zones; zone++)
+ kfree(zone_dev_attrs[zone].attr.name);
+ }
+ kfree(zone_dev_attrs);
+ kfree(zone_data);
+ kfree(zone_attrs);
+}
+
+static acpi_status alienware_wmax_command(struct wmax_basic_args *in_args,
+ u32 command, int *out_data)
+{
+ acpi_status status;
+ union acpi_object *obj;
+ struct acpi_buffer input;
+ struct acpi_buffer output;
+
+ input.length = (acpi_size) sizeof(*in_args);
+ input.pointer = in_args;
+ if (out_data) {
+ output.length = ACPI_ALLOCATE_BUFFER;
+ output.pointer = NULL;
+ status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0,
+ command, &input, &output);
+ if (ACPI_SUCCESS(status)) {
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ *out_data = (u32)obj->integer.value;
+ }
+ kfree(output.pointer);
+ } else {
+ status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0,
+ command, &input, NULL);
+ }
+ return status;
+}
+
+/*
+ * The HDMI mux sysfs node indicates the status of the HDMI input mux.
+ * It can toggle between standard system GPU output and HDMI input.
+ */
+static ssize_t show_hdmi_cable(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ u32 out_data;
+ struct wmax_basic_args in_args = {
+ .arg = 0,
+ };
+ status =
+ alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_CABLE,
+ (u32 *) &out_data);
+ if (ACPI_SUCCESS(status)) {
+ if (out_data == 0)
+ return scnprintf(buf, PAGE_SIZE,
+ "[unconnected] connected unknown\n");
+ else if (out_data == 1)
+ return scnprintf(buf, PAGE_SIZE,
+ "unconnected [connected] unknown\n");
+ }
+ pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status);
+ return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n");
+}
+
+static ssize_t show_hdmi_source(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ u32 out_data;
+ struct wmax_basic_args in_args = {
+ .arg = 0,
+ };
+ status =
+ alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_STATUS,
+ (u32 *) &out_data);
+
+ if (ACPI_SUCCESS(status)) {
+ if (out_data == 1)
+ return scnprintf(buf, PAGE_SIZE,
+ "[input] gpu unknown\n");
+ else if (out_data == 2)
+ return scnprintf(buf, PAGE_SIZE,
+ "input [gpu] unknown\n");
+ }
+ pr_err("alienware-wmi: unknown HDMI source status: %u\n", status);
+ return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n");
+}
+
+static ssize_t toggle_hdmi_source(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ acpi_status status;
+ struct wmax_basic_args args;
+ if (strcmp(buf, "gpu\n") == 0)
+ args.arg = 1;
+ else if (strcmp(buf, "input\n") == 0)
+ args.arg = 2;
+ else
+ args.arg = 3;
+ pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf);
+
+ status = alienware_wmax_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL);
+
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: HDMI toggle failed: results: %u\n",
+ status);
+ return count;
+}
+
+static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL);
+static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source,
+ toggle_hdmi_source);
+
+static struct attribute *hdmi_attrs[] = {
+ &dev_attr_cable.attr,
+ &dev_attr_source.attr,
+ NULL,
+};
+
+static const struct attribute_group hdmi_attribute_group = {
+ .name = "hdmi",
+ .attrs = hdmi_attrs,
+};
+
+static void remove_hdmi(struct platform_device *dev)
+{
+ if (quirks->hdmi_mux > 0)
+ sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group);
+}
+
+static int create_hdmi(struct platform_device *dev)
+{
+ int ret;
+
+ ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group);
+ if (ret)
+ remove_hdmi(dev);
+ return ret;
+}
+
+/*
+ * Alienware GFX amplifier support
+ * - Currently supports reading cable status
+ * - Leaving expansion room to possibly support dock/undock events later
+ */
+static ssize_t show_amplifier_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ u32 out_data;
+ struct wmax_basic_args in_args = {
+ .arg = 0,
+ };
+ status =
+ alienware_wmax_command(&in_args, WMAX_METHOD_AMPLIFIER_CABLE,
+ (u32 *) &out_data);
+ if (ACPI_SUCCESS(status)) {
+ if (out_data == 0)
+ return scnprintf(buf, PAGE_SIZE,
+ "[unconnected] connected unknown\n");
+ else if (out_data == 1)
+ return scnprintf(buf, PAGE_SIZE,
+ "unconnected [connected] unknown\n");
+ }
+ pr_err("alienware-wmi: unknown amplifier cable status: %d\n", status);
+ return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n");
+}
+
+static DEVICE_ATTR(status, S_IRUGO, show_amplifier_status, NULL);
+
+static struct attribute *amplifier_attrs[] = {
+ &dev_attr_status.attr,
+ NULL,
+};
+
+static const struct attribute_group amplifier_attribute_group = {
+ .name = "amplifier",
+ .attrs = amplifier_attrs,
+};
+
+static void remove_amplifier(struct platform_device *dev)
+{
+ if (quirks->amplifier > 0)
+ sysfs_remove_group(&dev->dev.kobj, &amplifier_attribute_group);
+}
+
+static int create_amplifier(struct platform_device *dev)
+{
+ int ret;
+
+ ret = sysfs_create_group(&dev->dev.kobj, &amplifier_attribute_group);
+ if (ret)
+ remove_amplifier(dev);
+ return ret;
+}
+
+/*
+ * Deep Sleep Control support
+ * - Modifies BIOS setting for deep sleep control allowing extra wakeup events
+ */
+static ssize_t show_deepsleep_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ u32 out_data;
+ struct wmax_basic_args in_args = {
+ .arg = 0,
+ };
+ status = alienware_wmax_command(&in_args, WMAX_METHOD_DEEP_SLEEP_STATUS,
+ (u32 *) &out_data);
+ if (ACPI_SUCCESS(status)) {
+ if (out_data == 0)
+ return scnprintf(buf, PAGE_SIZE,
+ "[disabled] s5 s5_s4\n");
+ else if (out_data == 1)
+ return scnprintf(buf, PAGE_SIZE,
+ "disabled [s5] s5_s4\n");
+ else if (out_data == 2)
+ return scnprintf(buf, PAGE_SIZE,
+ "disabled s5 [s5_s4]\n");
+ }
+ pr_err("alienware-wmi: unknown deep sleep status: %d\n", status);
+ return scnprintf(buf, PAGE_SIZE, "disabled s5 s5_s4 [unknown]\n");
+}
+
+static ssize_t toggle_deepsleep(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ acpi_status status;
+ struct wmax_basic_args args;
+
+ if (strcmp(buf, "disabled\n") == 0)
+ args.arg = 0;
+ else if (strcmp(buf, "s5\n") == 0)
+ args.arg = 1;
+ else
+ args.arg = 2;
+ pr_debug("alienware-wmi: setting deep sleep to %d : %s", args.arg, buf);
+
+ status = alienware_wmax_command(&args, WMAX_METHOD_DEEP_SLEEP_CONTROL,
+ NULL);
+
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: deep sleep control failed: results: %u\n",
+ status);
+ return count;
+}
+
+static DEVICE_ATTR(deepsleep, S_IRUGO | S_IWUSR, show_deepsleep_status, toggle_deepsleep);
+
+static struct attribute *deepsleep_attrs[] = {
+ &dev_attr_deepsleep.attr,
+ NULL,
+};
+
+static const struct attribute_group deepsleep_attribute_group = {
+ .name = "deepsleep",
+ .attrs = deepsleep_attrs,
+};
+
+static void remove_deepsleep(struct platform_device *dev)
+{
+ if (quirks->deepslp > 0)
+ sysfs_remove_group(&dev->dev.kobj, &deepsleep_attribute_group);
+}
+
+static int create_deepsleep(struct platform_device *dev)
+{
+ int ret;
+
+ ret = sysfs_create_group(&dev->dev.kobj, &deepsleep_attribute_group);
+ if (ret)
+ remove_deepsleep(dev);
+ return ret;
+}
+
+static int __init alienware_wmi_init(void)
+{
+ int ret;
+
+ if (wmi_has_guid(LEGACY_CONTROL_GUID))
+ interface = LEGACY;
+ else if (wmi_has_guid(WMAX_CONTROL_GUID))
+ interface = WMAX;
+ else {
+ pr_warn("alienware-wmi: No known WMI GUID found\n");
+ return -ENODEV;
+ }
+
+ dmi_check_system(alienware_quirks);
+ if (quirks == NULL)
+ quirks = &quirk_unknown;
+
+ ret = platform_driver_register(&platform_driver);
+ if (ret)
+ goto fail_platform_driver;
+ platform_device = platform_device_alloc("alienware-wmi", -1);
+ if (!platform_device) {
+ ret = -ENOMEM;
+ goto fail_platform_device1;
+ }
+ ret = platform_device_add(platform_device);
+ if (ret)
+ goto fail_platform_device2;
+
+ if (quirks->hdmi_mux > 0) {
+ ret = create_hdmi(platform_device);
+ if (ret)
+ goto fail_prep_hdmi;
+ }
+
+ if (quirks->amplifier > 0) {
+ ret = create_amplifier(platform_device);
+ if (ret)
+ goto fail_prep_amplifier;
+ }
+
+ if (quirks->deepslp > 0) {
+ ret = create_deepsleep(platform_device);
+ if (ret)
+ goto fail_prep_deepsleep;
+ }
+
+ ret = alienware_zone_init(platform_device);
+ if (ret)
+ goto fail_prep_zones;
+
+ return 0;
+
+fail_prep_zones:
+ alienware_zone_exit(platform_device);
+fail_prep_deepsleep:
+fail_prep_amplifier:
+fail_prep_hdmi:
+ platform_device_del(platform_device);
+fail_platform_device2:
+ platform_device_put(platform_device);
+fail_platform_device1:
+ platform_driver_unregister(&platform_driver);
+fail_platform_driver:
+ return ret;
+}
+
+module_init(alienware_wmi_init);
+
+static void __exit alienware_wmi_exit(void)
+{
+ if (platform_device) {
+ alienware_zone_exit(platform_device);
+ remove_hdmi(platform_device);
+ platform_device_unregister(platform_device);
+ platform_driver_unregister(&platform_driver);
+ }
+}
+
+module_exit(alienware_wmi_exit);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 06:17:06 +0300