This patch adds platform_profile support for Dell devices which implement
User Selectable Thermal Tables (USTT) that are meant to be controlled by
Alienware Command Center (AWCC). These devices may include newer Alienware
M-Series, Alienware X-Series and Dell's G-Series. This patch, was tested
by me on an Alienware x15 R1.
It is suspected that Alienware Command Center manages thermal profiles
through the WMI interface, specifically through a device with identifier
\_SB_.AMW1.WMAX. This device was reverse engineered and the relevant
functionality is documented here [1]. This driver interacts with this
WMI device and thus is able to mimic AWCC's thermal profiles functionality
through the platform_profile API. In consequence the user would be able
to set and retrieve thermal profiles, which are just fan speed profiles.
This driver was heavily inspired on inspur_platform_profile, special
thanks.
Notes:
- Performance (FullSpeed) profile is a special profile which has it's own
entry in the Firmware Settings of the Alienware x15 R1. It also changes
the color of the F1 key. I suspect this behavior would be replicated in
other X-Series or M-Series laptops.
- G-Mode is a profile documented on [1] which mimics the behavior of
FullSpeed mode but it does not have an entry on the Firmware Settings of
the Alienware x15 R1, this may correspond to the G-Mode functionality on
G-Series laptops (activated by a special button) but I cannot test it. I
did not include this code in the driver as G-Mode causes unexpected
behavior on X-Series laptops.
---
v2:
- Moved functionality to alienware-wmi driver
- Added thermal and gmode quirks to add support based on dmi match
- Performance profile is now GMODE for devices that support it
- alienware_wmax_command now is insize agnostic to support new thermal
methods
---
drivers/platform/x86/dell/Kconfig | 1 +
drivers/platform/x86/dell/alienware-wmi.c | 214 ++++++++++++++++++++--
2 files changed, 202 insertions(+), 13 deletions(-)
diff --git a/drivers/platform/x86/dell/Kconfig b/drivers/platform/x86/dell/Kconfig
index 68a49788a..b06d634cd 100644
--- a/drivers/platform/x86/dell/Kconfig
+++ b/drivers/platform/x86/dell/Kconfig
@@ -21,6 +21,7 @@ config ALIENWARE_WMI
depends on LEDS_CLASS
depends on NEW_LEDS
depends on ACPI_WMI
+ select ACPI_PLATFORM_PROFILE
help
This is a driver for controlling Alienware BIOS driven
features. It exposes an interface for controlling the AlienFX
diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
index f5ee62ce1..47abb533c 100644
--- a/drivers/platform/x86/dell/alienware-wmi.c
+++ b/drivers/platform/x86/dell/alienware-wmi.c
@@ -10,6 +10,7 @@
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/platform_profile.h>
#include <linux/dmi.h>
#include <linux/leds.h>
@@ -25,6 +26,15 @@
#define WMAX_METHOD_AMPLIFIER_CABLE 0x6
#define WMAX_METHOD_DEEP_SLEEP_CONTROL 0x0B
#define WMAX_METHOD_DEEP_SLEEP_STATUS 0x0C
+#define WMAX_METHOD_THERMAL_INFORMATION 0x14
+#define WMAX_METHOD_THERMAL_CONTROL 0x15
+
+#define WMAX_THERMAL_QUIET 0xA3
+#define WMAX_THERMAL_BALANCED 0xA0
+#define WMAX_THERMAL_BALANCED_PERFORMANCE 0xA1
+#define WMAX_THERMAL_PERFORMANCE 0xA4
+#define WMAX_THERMAL_GMODE 0xAB
+#define WMAX_THERMAL_LOW_POWER 0xA5
MODULE_AUTHOR("Mario Limonciello <mario.limonciello@xxxxxxxxxxx>");
MODULE_DESCRIPTION("Alienware special feature control");
@@ -54,6 +64,8 @@ struct quirk_entry {
u8 hdmi_mux;
u8 amplifier;
u8 deepslp;
+ u8 thermal;
+ u8 gmode;
};
static struct quirk_entry *quirks;
@@ -64,6 +76,8 @@ static struct quirk_entry quirk_inspiron5675 = {
.hdmi_mux = 0,
.amplifier = 0,
.deepslp = 0,
+ .thermal = 0,
+ .gmode = 0,
};
static struct quirk_entry quirk_unknown = {
@@ -71,6 +85,8 @@ static struct quirk_entry quirk_unknown = {
.hdmi_mux = 0,
.amplifier = 0,
.deepslp = 0,
+ .thermal = 0,
+ .gmode = 0,
};
static struct quirk_entry quirk_x51_r1_r2 = {
@@ -78,6 +94,8 @@ static struct quirk_entry quirk_x51_r1_r2 = {
.hdmi_mux = 0,
.amplifier = 0,
.deepslp = 0,
+ .thermal = 0,
+ .gmode = 0,
};
static struct quirk_entry quirk_x51_r3 = {
@@ -85,6 +103,8 @@ static struct quirk_entry quirk_x51_r3 = {
.hdmi_mux = 0,
.amplifier = 1,
.deepslp = 0,
+ .thermal = 0,
+ .gmode = 0,
};
static struct quirk_entry quirk_asm100 = {
@@ -92,6 +112,8 @@ static struct quirk_entry quirk_asm100 = {
.hdmi_mux = 1,
.amplifier = 0,
.deepslp = 0,
+ .thermal = 0,
+ .gmode = 0,
};
static struct quirk_entry quirk_asm200 = {
@@ -99,6 +121,8 @@ static struct quirk_entry quirk_asm200 = {
.hdmi_mux = 1,
.amplifier = 0,
.deepslp = 1,
+ .thermal = 0,
+ .gmode = 0,
};
static struct quirk_entry quirk_asm201 = {
@@ -106,6 +130,17 @@ static struct quirk_entry quirk_asm201 = {
.hdmi_mux = 1,
.amplifier = 1,
.deepslp = 1,
+ .thermal = 0,
+ .gmode = 0,
+};
+
+static struct quirk_entry quirk_x15_r1 = {
+ .num_zones = 2,
+ .hdmi_mux = 0,
+ .amplifier = 0,
+ .deepslp = 0,
+ .thermal = 1,
+ .gmode = 0,
};
static int __init dmi_matched(const struct dmi_system_id *dmi)
@@ -169,6 +204,15 @@ static const struct dmi_system_id alienware_quirks[] __initconst = {
},
.driver_data = &quirk_asm201,
},
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware x15 R1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alienware x15 R1")
+ },
+ .driver_data = &quirk_x15_r1,
+ },
{
.callback = dmi_matched,
.ident = "Dell Inc. Inspiron 5675",
@@ -218,6 +262,7 @@ 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_profile_handler pp_handler;
static struct platform_driver platform_driver = {
.driver = {
@@ -500,7 +545,7 @@ static void alienware_zone_exit(struct platform_device *dev)
kfree(zone_attrs);
}
-static acpi_status alienware_wmax_command(struct wmax_basic_args *in_args,
+static acpi_status alienware_wmax_command(void *in_args, size_t insize,
u32 command, int *out_data)
{
acpi_status status;
@@ -508,7 +553,7 @@ static acpi_status alienware_wmax_command(struct wmax_basic_args *in_args,
struct acpi_buffer input;
struct acpi_buffer output;
- input.length = (acpi_size) sizeof(*in_args);
+ input.length = (acpi_size) insize;
input.pointer = in_args;
if (out_data) {
output.length = ACPI_ALLOCATE_BUFFER;
@@ -541,8 +586,8 @@ static ssize_t show_hdmi_cable(struct device *dev,
.arg = 0,
};
status =
- alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_CABLE,
- (u32 *) &out_data);
+ alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_HDMI_CABLE, (u32 *) &out_data);
if (ACPI_SUCCESS(status)) {
if (out_data == 0)
return sysfs_emit(buf, "[unconnected] connected unknown\n");
@@ -562,8 +607,8 @@ static ssize_t show_hdmi_source(struct device *dev,
.arg = 0,
};
status =
- alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_STATUS,
- (u32 *) &out_data);
+ alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_HDMI_STATUS, (u32 *) &out_data);
if (ACPI_SUCCESS(status)) {
if (out_data == 1)
@@ -589,7 +634,8 @@ static ssize_t toggle_hdmi_source(struct device *dev,
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);
+ status = alienware_wmax_command(&args, sizeof(args),
+ WMAX_METHOD_HDMI_SOURCE, NULL);
if (ACPI_FAILURE(status))
pr_err("alienware-wmi: HDMI toggle failed: results: %u\n",
@@ -642,8 +688,8 @@ static ssize_t show_amplifier_status(struct device *dev,
.arg = 0,
};
status =
- alienware_wmax_command(&in_args, WMAX_METHOD_AMPLIFIER_CABLE,
- (u32 *) &out_data);
+ alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_AMPLIFIER_CABLE, (u32 *) &out_data);
if (ACPI_SUCCESS(status)) {
if (out_data == 0)
return sysfs_emit(buf, "[unconnected] connected unknown\n");
@@ -694,8 +740,8 @@ static ssize_t show_deepsleep_status(struct device *dev,
struct wmax_basic_args in_args = {
.arg = 0,
};
- status = alienware_wmax_command(&in_args, WMAX_METHOD_DEEP_SLEEP_STATUS,
- (u32 *) &out_data);
+ status = alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_DEEP_SLEEP_STATUS, (u32 *) &out_data);
if (ACPI_SUCCESS(status)) {
if (out_data == 0)
return sysfs_emit(buf, "[disabled] s5 s5_s4\n");
@@ -723,8 +769,8 @@ static ssize_t toggle_deepsleep(struct device *dev,
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);
+ status = alienware_wmax_command(&args, sizeof(args),
+ WMAX_METHOD_DEEP_SLEEP_CONTROL, NULL);
if (ACPI_FAILURE(status))
pr_err("alienware-wmi: deep sleep control failed: results: %u\n",
@@ -760,6 +806,140 @@ static int create_deepsleep(struct platform_device *dev)
return ret;
}
+/*
+ * Thermal Profile control
+ * - Provides thermal profile control through the Platform Profile API
+ */
+
+static int platform_profile_get(struct platform_profile_handler *pprof,
+ enum platform_profile_option *profile)
+{
+ acpi_status status;
+ u32 in_args = 0x0B;
+ u32 out_data;
+
+ status = alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_THERMAL_INFORMATION, (u32 *) &out_data);
+
+ if (ACPI_FAILURE(status) || out_data < 0)
+ return -EOPNOTSUPP;
+
+ switch (out_data) {
+ case WMAX_THERMAL_LOW_POWER:
+ *profile = PLATFORM_PROFILE_LOW_POWER;
+ break;
+ case WMAX_THERMAL_QUIET:
+ *profile = PLATFORM_PROFILE_QUIET;
+ break;
+ case WMAX_THERMAL_BALANCED:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ break;
+ case WMAX_THERMAL_BALANCED_PERFORMANCE:
+ *profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE;
+ break;
+ case WMAX_THERMAL_PERFORMANCE:
+ case WMAX_THERMAL_GMODE:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ break;
+ default:
+ return -ENODATA;
+ }
+
+ return 0;
+}
+
+#define SET_MASK(prof) ((prof << 8) | 1)
+
+static int platform_profile_set(struct platform_profile_handler *pprof,
+ enum platform_profile_option profile)
+{
+ acpi_status status;
+ u32 in_args;
+ u32 out_data;
+
+ switch (profile) {
+ case PLATFORM_PROFILE_LOW_POWER:
+ in_args = SET_MASK(WMAX_THERMAL_LOW_POWER);
+ break;
+ case PLATFORM_PROFILE_QUIET:
+ in_args = SET_MASK(WMAX_THERMAL_QUIET);
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ in_args = SET_MASK(WMAX_THERMAL_BALANCED);
+ break;
+ case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
+ in_args = SET_MASK(WMAX_THERMAL_BALANCED_PERFORMANCE);
+ break;
+ case PLATFORM_PROFILE_PERFORMANCE:
+ in_args = SET_MASK(WMAX_THERMAL_PERFORMANCE);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ status = alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_THERMAL_CONTROL, (u32 *) &out_data);
+
+ if (ACPI_FAILURE(status) || out_data < 0)
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
+static int gmode_platform_profile_set(struct platform_profile_handler *pprof,
+ enum platform_profile_option profile)
+{
+ acpi_status status;
+ u32 in_args;
+ u32 out_data;
+
+ switch (profile) {
+ case PLATFORM_PROFILE_LOW_POWER:
+ in_args = SET_MASK(WMAX_THERMAL_LOW_POWER);
+ break;
+ case PLATFORM_PROFILE_QUIET:
+ in_args = SET_MASK(WMAX_THERMAL_QUIET);
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ in_args = SET_MASK(WMAX_THERMAL_BALANCED);
+ break;
+ case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
+ in_args = SET_MASK(WMAX_THERMAL_BALANCED_PERFORMANCE);
+ break;
+ case PLATFORM_PROFILE_PERFORMANCE:
+ in_args = SET_MASK(WMAX_THERMAL_GMODE);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ status = alienware_wmax_command(&in_args, sizeof(in_args),
+ WMAX_METHOD_THERMAL_CONTROL, (u32 *) &out_data);
+
+ if (ACPI_FAILURE(status) || out_data < 0)
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
+static int create_platform_profile(void)
+{
+ pp_handler.profile_get = platform_profile_get;
+
+ if (quirks->gmode > 0)
+ pp_handler.profile_set = gmode_platform_profile_set;
+ else
+ pp_handler.profile_set = platform_profile_set;
+
+ set_bit(PLATFORM_PROFILE_LOW_POWER, pp_handler.choices);
+ set_bit(PLATFORM_PROFILE_QUIET, pp_handler.choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, pp_handler.choices);
+ set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, pp_handler.choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, pp_handler.choices);
+
+ return platform_profile_register(&pp_handler);
+}
+
static int __init alienware_wmi_init(void)
{
int ret;
@@ -807,6 +987,12 @@ static int __init alienware_wmi_init(void)
goto fail_prep_deepsleep;
}
+ if (quirks->thermal > 0) {
+ ret = create_platform_profile();
+ if (ret)
+ goto fail_prep_thermal_profile;
+ }
+
ret = alienware_zone_init(platform_device);
if (ret)
goto fail_prep_zones;
@@ -817,6 +1003,7 @@ static int __init alienware_wmi_init(void)
alienware_zone_exit(platform_device);
fail_prep_deepsleep:
fail_prep_amplifier:
+fail_prep_thermal_profile:
fail_prep_hdmi:
platform_device_del(platform_device);
fail_platform_device2:
@@ -836,6 +1023,7 @@ static void __exit alienware_wmi_exit(void)
remove_hdmi(platform_device);
platform_device_unregister(platform_device);
platform_driver_unregister(&platform_driver);
+ platform_profile_remove();
}
}
--
2.46.2
