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Date: Thu, 21 Jan 2016 18:04:59 -0600
From: Mario Limonciello <mario_limonciello@...l.com>
To: dvhart@...radead.org
Cc: LKML <linux-kernel@...r.kernel.org>,
platform-driver-x86@...r.kernel.org,
Mario Limonciello <mario_limonciello@...l.com>
Subject: [PATCH 3/4] Add support for deep sleep control.
This allows configuration the system for wakeup with a controller.
Signed-off-by: Mario Limonciello <mario_limonciello@...l.com>
---
drivers/platform/x86/alienware-wmi.c | 103 ++++++++++++++++++++++++++++++++++-
1 file changed, 102 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c
index e6f6322..e66c34d 100644
--- a/drivers/platform/x86/alienware-wmi.c
+++ b/drivers/platform/x86/alienware-wmi.c
@@ -1,7 +1,7 @@
/*
* Alienware AlienFX control
*
- * Copyright (C) 2014 Dell Inc <mario_limonciello@...l.com>
+ * Copyright (C) 2014-2016 Dell Inc <mario_limonciello@...l.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -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@...l.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)
@@ -650,6 +657,93 @@ error_create_amplifier:
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)
+ goto error_create_deepsleep;
+ return 0;
+
+error_create_deepsleep:
+ remove_deepsleep(dev);
+ return ret;
+}
+
static int __init alienware_wmi_init(void)
{
int ret;
@@ -691,6 +785,12 @@ 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;
@@ -699,6 +799,7 @@ 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);
--
1.9.1
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