diff options
| -rw-r--r-- | drivers/platform/x86/alienware-wmi.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c index fa86b7d..a9f8d30 100644 --- a/drivers/platform/x86/alienware-wmi.c +++ b/drivers/platform/x86/alienware-wmi.c @@ -34,6 +34,8 @@ #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"); @@ -62,6 +64,7 @@ struct quirk_entry { u8 num_zones; u8 hdmi_mux; u8 amplifier; + u8 deepslp; }; static struct quirk_entry *quirks; @@ -70,24 +73,28 @@ 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 int __init dmi_matched(const struct dmi_system_id *dmi) @@ -647,6 +654,87 @@ static int create_amplifier(struct platform_device *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 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; @@ -688,6 +776,12 @@ static int __init alienware_wmi_init(void) 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; @@ -696,6 +790,7 @@ static int __init alienware_wmi_init(void) fail_prep_zones: alienware_zone_exit(platform_device); +fail_prep_deepsleep: fail_prep_amplifier: fail_prep_hdmi: platform_device_del(platform_device); |
