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Subject[PATCH v3 2/2] platform/x86: hp-wmi: add platform profile support
Date
Implement support for cool, balanced and performance thermal profile

Signed-off-by: Elia Devito <eliadevito@gmail.com>
---
the "quiet" profile will be implemented with a further patch

v2: added platform_profile_remove() missing call
v3: apply Barnabás suggestions

drivers/platform/x86/hp-wmi.c | 97 +++++++++++++++++++++++++++++++++--
1 file changed, 92 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 6d7b91b8109b..027a1467d009 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -21,6 +21,7 @@
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/platform_device.h>
+#include <linux/platform_profile.h>
#include <linux/acpi.h>
#include <linux/rfkill.h>
#include <linux/string.h>
@@ -119,6 +120,12 @@ enum hp_wireless2_bits {
HPWMI_POWER_FW_OR_HW = HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
};

+enum hp_thermal_profile {
+ HP_THERMAL_PROFILE_PERFORMANCE = 0x00,
+ HP_THERMAL_PROFILE_DEFAULT = 0x01,
+ HP_THERMAL_PROFILE_COOL = 0x02
+};
+
#define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
#define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)

@@ -159,6 +166,8 @@ static const struct key_entry hp_wmi_keymap[] = {

static struct input_dev *hp_wmi_input_dev;
static struct platform_device *hp_wmi_platform_dev;
+static struct platform_profile_handler platform_profile_handler;
+static bool platform_profile_support;

static struct rfkill *wifi_rfkill;
static struct rfkill *bluetooth_rfkill;
@@ -869,11 +878,74 @@ static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
return err;
}

-static int thermal_profile_setup(struct platform_device *device)
+static int thermal_profile_get(void)
+{
+ return hp_wmi_read_int(HPWMI_THERMAL_PROFILE_QUERY);
+}
+
+static int thermal_profile_set(int thermal_profile)
+{
+ return hp_wmi_perform_query(HPWMI_THERMAL_PROFILE_QUERY, HPWMI_WRITE, &thermal_profile,
+ sizeof(thermal_profile), 0);
+}
+
+static int platform_profile_get(struct platform_profile_handler *pprof,
+ enum platform_profile_option *profile)
+{
+ int tp;
+
+ tp = thermal_profile_get();
+ if (tp < 0)
+ return tp;
+
+ switch (tp) {
+ case HP_THERMAL_PROFILE_PERFORMANCE:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ break;
+ case HP_THERMAL_PROFILE_DEFAULT:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ break;
+ case HP_THERMAL_PROFILE_COOL:
+ *profile = PLATFORM_PROFILE_COOL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int platform_profile_set(struct platform_profile_handler *pprof,
+ enum platform_profile_option profile)
{
int err, tp;

- tp = hp_wmi_read_int(HPWMI_THERMAL_PROFILE_QUERY);
+ switch (profile) {
+ case PLATFORM_PROFILE_PERFORMANCE:
+ tp = HP_THERMAL_PROFILE_PERFORMANCE;
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ tp = HP_THERMAL_PROFILE_DEFAULT;
+ break;
+ case PLATFORM_PROFILE_COOL:
+ tp = HP_THERMAL_PROFILE_COOL;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ err = thermal_profile_set(tp);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int thermal_profile_setup(void)
+{
+ int err, tp;
+
+ tp = thermal_profile_get();
if (tp < 0)
return tp;

@@ -881,11 +953,23 @@ static int thermal_profile_setup(struct platform_device *device)
* call thermal profile write command to ensure that the firmware correctly
* sets the OEM variables for the DPTF
*/
- err = hp_wmi_perform_query(HPWMI_THERMAL_PROFILE_QUERY, HPWMI_WRITE, &tp,
- sizeof(tp), 0);
+ err = thermal_profile_set(tp);
if (err)
return err;

+ platform_profile_handler.profile_get = platform_profile_get,
+ platform_profile_handler.profile_set = platform_profile_set,
+
+ set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
+
+ err = platform_profile_register(&platform_profile_handler);
+ if (err)
+ return err;
+
+ platform_profile_support = true;
+
return 0;
}

@@ -900,7 +984,7 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
if (hp_wmi_rfkill_setup(device))
hp_wmi_rfkill2_setup(device);

- thermal_profile_setup(device);
+ thermal_profile_setup();

return 0;
}
@@ -927,6 +1011,9 @@ static int __exit hp_wmi_bios_remove(struct platform_device *device)
rfkill_destroy(wwan_rfkill);
}

+ if (platform_profile_support)
+ platform_profile_remove();
+
return 0;
}

--
2.29.2
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