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Date: Fri, 17 Apr 2020 18:20:19 +0200
From: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
To: linux-pm@...r.kernel.org
Cc: Zhang Rui <rui.zhang@...el.com>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Len Brown <lenb@...nel.org>, Jiri Pirko <jiri@...lanox.com>,
Ido Schimmel <idosch@...lanox.com>,
"David S . Miller" <davem@...emloft.net>,
Peter Kaestle <peter@...e.net>,
Darren Hart <dvhart@...radead.org>,
Andy Shevchenko <andy@...radead.org>,
Support Opensource <support.opensource@...semi.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Amit Kucheria <amit.kucheria@...durent.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>,
Allison Randal <allison@...utok.net>,
Enrico Weigelt <info@...ux.net>,
Gayatri Kammela <gayatri.kammela@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-acpi@...r.kernel.org, netdev@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, kernel@...labora.com,
Andrzej Pietrasiewicz <andrzej.p@...labora.com>,
Barlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: [RFC v3 1/2] thermal: core: Let thermal zone device's mode be stored in its struct
Thermal zone devices' mode is stored in individual drivers. This patch
changes it so that mode is stored in struct thermal_zone_device instead.
As a result all driver-specific variables storing the mode are not needed
and are removed. Consequently, the get_mode() implementations have nothing
to operate on and need to be removed, too.
Some thermal framework specific functions are introduced:
thermal_zone_device_get_mode()
thermal_zone_device_set_mode()
thermal_zone_device_enable()
thermal_zone_device_disable()
thermal_zone_device_get_mode() and its "set" counterpart take tzd's lock
and the "set" calls driver's set_mode() if provided, so the latter must
not take this lock again. At the end of the "set"
thermal_zone_device_update() is called so drivers don't need to repeat this
invocation in their specific set_mode() implementations.
The scope of the above 4 functions is purposedly limited to the thermal
framework and drivers are not supposed to call them. This encapsulation
does not fully work at the moment for some drivers, though:
- platform/x86/acerhdf.c
- drivers/thermal/imx_thermal.c
- drivers/thermal/intel/intel_quark_dts_thermal.c
- drivers/thermal/of-thermal.c
and they manipulate struct thermal_zone_device's members directly.
struct thermal_zone_params gains a new member called initial_mode, which
is used to set tzd's mode at registration time.
The sysfs "mode" attribute is always exposed from now on, because all
thermal zone devices now have their get_mode() implemented at the generic
level and it is always available. Exposing "mode" doesn't hurt the drivers
which don't provide their own set_mode(), because writing to "mode" will
result in -EPERM, as expected.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
---
drivers/acpi/thermal.c | 46 +++++----------
.../ethernet/mellanox/mlxsw/core_thermal.c | 57 ++++---------------
drivers/platform/x86/acerhdf.c | 17 +-----
drivers/thermal/da9062-thermal.c | 16 ++----
drivers/thermal/imx_thermal.c | 29 +++-------
.../intel/int340x_thermal/int3400_thermal.c | 30 ++--------
.../thermal/intel/intel_quark_dts_thermal.c | 22 ++-----
drivers/thermal/of-thermal.c | 30 +++-------
drivers/thermal/thermal_core.c | 44 +++++++++++++-
drivers/thermal/thermal_core.h | 16 ++++++
drivers/thermal/thermal_sysfs.c | 29 +---------
include/linux/thermal.h | 7 ++-
12 files changed, 125 insertions(+), 218 deletions(-)
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 19067a5e5293..67bc263332a5 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -172,7 +172,6 @@ struct acpi_thermal {
struct acpi_thermal_trips trips;
struct acpi_handle_list devices;
struct thermal_zone_device *thermal_zone;
- int tz_enabled;
int kelvin_offset; /* in millidegrees */
struct work_struct thermal_check_work;
};
@@ -500,7 +499,7 @@ static void acpi_thermal_check(void *data)
{
struct acpi_thermal *tz = data;
- if (!tz->tz_enabled)
+ if (tz->thermal_zone->mode != THERMAL_DEVICE_ENABLED)
return;
thermal_zone_device_update(tz->thermal_zone,
@@ -526,46 +525,29 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
return 0;
}
-static int thermal_get_mode(struct thermal_zone_device *thermal,
- enum thermal_device_mode *mode)
-{
- struct acpi_thermal *tz = thermal->devdata;
-
- if (!tz)
- return -EINVAL;
-
- *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED :
- THERMAL_DEVICE_DISABLED;
-
- return 0;
-}
-
static int thermal_set_mode(struct thermal_zone_device *thermal,
enum thermal_device_mode mode)
{
struct acpi_thermal *tz = thermal->devdata;
- int enable;
if (!tz)
return -EINVAL;
+ if (mode != THERMAL_DEVICE_DISABLED &&
+ mode != THERMAL_DEVICE_ENABLED)
+ return -EINVAL;
+
/*
* enable/disable thermal management from ACPI thermal driver
*/
- if (mode == THERMAL_DEVICE_ENABLED)
- enable = 1;
- else if (mode == THERMAL_DEVICE_DISABLED) {
- enable = 0;
+ if (mode == THERMAL_DEVICE_DISABLED)
pr_warn("thermal zone will be disabled\n");
- } else
- return -EINVAL;
- if (enable != tz->tz_enabled) {
- tz->tz_enabled = enable;
+ if (mode != thermal->mode) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"%s kernel ACPI thermal control\n",
- tz->tz_enabled ? "Enable" : "Disable"));
- acpi_thermal_check(tz);
+ mode == THERMAL_DEVICE_ENABLED ?
+ "Enable" : "Disable"));
}
return 0;
}
@@ -856,7 +838,6 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
.bind = acpi_thermal_bind_cooling_device,
.unbind = acpi_thermal_unbind_cooling_device,
.get_temp = thermal_get_temp,
- .get_mode = thermal_get_mode,
.set_mode = thermal_set_mode,
.get_trip_type = thermal_get_trip_type,
.get_trip_temp = thermal_get_trip_temp,
@@ -870,6 +851,9 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
int trips = 0;
int result;
acpi_status status;
+ struct thermal_zone_params prms = {
+ .initial_mode = THERMAL_DEVICE_ENABLED,
+ };
int i;
if (tz->trips.critical.flags.valid)
@@ -887,13 +871,13 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
if (tz->trips.passive.flags.valid)
tz->thermal_zone =
thermal_zone_device_register("acpitz", trips, 0, tz,
- &acpi_thermal_zone_ops, NULL,
+ &acpi_thermal_zone_ops, &prms,
tz->trips.passive.tsp*100,
tz->polling_frequency*100);
else
tz->thermal_zone =
thermal_zone_device_register("acpitz", trips, 0, tz,
- &acpi_thermal_zone_ops, NULL,
+ &acpi_thermal_zone_ops, &prms,
0, tz->polling_frequency*100);
if (IS_ERR(tz->thermal_zone))
return -ENODEV;
@@ -913,8 +897,6 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
if (ACPI_FAILURE(status))
return -ENODEV;
- tz->tz_enabled = 1;
-
dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
tz->thermal_zone->id);
return 0;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index ce0a6837daa3..50518048b86d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -98,7 +98,6 @@ struct mlxsw_thermal_module {
struct mlxsw_thermal *parent;
struct thermal_zone_device *tzdev;
struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
- enum thermal_device_mode mode;
int module; /* Module or gearbox number */
};
@@ -110,7 +109,6 @@ struct mlxsw_thermal {
struct thermal_cooling_device *cdevs[MLXSW_MFCR_PWMS_MAX];
u8 cooling_levels[MLXSW_THERMAL_MAX_STATE + 1];
struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
- enum thermal_device_mode mode;
struct mlxsw_thermal_module *tz_module_arr;
u8 tz_module_num;
struct mlxsw_thermal_module *tz_gearbox_arr;
@@ -277,33 +275,16 @@ static int mlxsw_thermal_unbind(struct thermal_zone_device *tzdev,
return 0;
}
-static int mlxsw_thermal_get_mode(struct thermal_zone_device *tzdev,
- enum thermal_device_mode *mode)
-{
- struct mlxsw_thermal *thermal = tzdev->devdata;
-
- *mode = thermal->mode;
-
- return 0;
-}
-
static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
enum thermal_device_mode mode)
{
struct mlxsw_thermal *thermal = tzdev->devdata;
- mutex_lock(&tzdev->lock);
-
if (mode == THERMAL_DEVICE_ENABLED)
tzdev->polling_delay = thermal->polling_delay;
else
tzdev->polling_delay = 0;
- mutex_unlock(&tzdev->lock);
-
- thermal->mode = mode;
- thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
-
return 0;
}
@@ -407,7 +388,6 @@ static int mlxsw_thermal_trend_get(struct thermal_zone_device *tzdev,
static struct thermal_zone_device_ops mlxsw_thermal_ops = {
.bind = mlxsw_thermal_bind,
.unbind = mlxsw_thermal_unbind,
- .get_mode = mlxsw_thermal_get_mode,
.set_mode = mlxsw_thermal_set_mode,
.get_temp = mlxsw_thermal_get_temp,
.get_trip_type = mlxsw_thermal_get_trip_type,
@@ -466,34 +446,17 @@ static int mlxsw_thermal_module_unbind(struct thermal_zone_device *tzdev,
return err;
}
-static int mlxsw_thermal_module_mode_get(struct thermal_zone_device *tzdev,
- enum thermal_device_mode *mode)
-{
- struct mlxsw_thermal_module *tz = tzdev->devdata;
-
- *mode = tz->mode;
-
- return 0;
-}
-
static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
enum thermal_device_mode mode)
{
struct mlxsw_thermal_module *tz = tzdev->devdata;
struct mlxsw_thermal *thermal = tz->parent;
- mutex_lock(&tzdev->lock);
-
if (mode == THERMAL_DEVICE_ENABLED)
tzdev->polling_delay = thermal->polling_delay;
else
tzdev->polling_delay = 0;
- mutex_unlock(&tzdev->lock);
-
- tz->mode = mode;
- thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
-
return 0;
}
@@ -596,7 +559,6 @@ mlxsw_thermal_module_trip_hyst_set(struct thermal_zone_device *tzdev, int trip,
static struct thermal_zone_device_ops mlxsw_thermal_module_ops = {
.bind = mlxsw_thermal_module_bind,
.unbind = mlxsw_thermal_module_unbind,
- .get_mode = mlxsw_thermal_module_mode_get,
.set_mode = mlxsw_thermal_module_mode_set,
.get_temp = mlxsw_thermal_module_temp_get,
.get_trip_type = mlxsw_thermal_module_trip_type_get,
@@ -635,7 +597,6 @@ static int mlxsw_thermal_gearbox_temp_get(struct thermal_zone_device *tzdev,
static struct thermal_zone_device_ops mlxsw_thermal_gearbox_ops = {
.bind = mlxsw_thermal_module_bind,
.unbind = mlxsw_thermal_module_unbind,
- .get_mode = mlxsw_thermal_module_mode_get,
.set_mode = mlxsw_thermal_module_mode_set,
.get_temp = mlxsw_thermal_gearbox_temp_get,
.get_trip_type = mlxsw_thermal_module_trip_type_get,
@@ -749,6 +710,9 @@ static const struct thermal_cooling_device_ops mlxsw_cooling_ops = {
static int
mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
{
+ struct thermal_zone_params tzp = {
+ .initial_mode = THERMAL_DEVICE_ENABLED,
+ };
char tz_name[MLXSW_THERMAL_ZONE_MAX_NAME];
int err;
@@ -759,13 +723,12 @@ mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
MLXSW_THERMAL_TRIP_MASK,
module_tz,
&mlxsw_thermal_module_ops,
- NULL, 0, 0);
+ &tzp, 0, 0);
if (IS_ERR(module_tz->tzdev)) {
err = PTR_ERR(module_tz->tzdev);
return err;
}
- module_tz->mode = THERMAL_DEVICE_ENABLED;
return 0;
}
@@ -868,6 +831,9 @@ mlxsw_thermal_modules_fini(struct mlxsw_thermal *thermal)
static int
mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
{
+ struct thermal_zone_params tzp = {
+ .initial_mode = THERMAL_DEVICE_ENABLED,
+ };
char tz_name[MLXSW_THERMAL_ZONE_MAX_NAME];
snprintf(tz_name, sizeof(tz_name), "mlxsw-gearbox%d",
@@ -877,11 +843,10 @@ mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
MLXSW_THERMAL_TRIP_MASK,
gearbox_tz,
&mlxsw_thermal_gearbox_ops,
- NULL, 0, 0);
+ &tzp, 0, 0);
if (IS_ERR(gearbox_tz->tzdev))
return PTR_ERR(gearbox_tz->tzdev);
- gearbox_tz->mode = THERMAL_DEVICE_ENABLED;
return 0;
}
@@ -960,6 +925,9 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
const struct mlxsw_bus_info *bus_info,
struct mlxsw_thermal **p_thermal)
{
+ struct thermal_zone_params tzp = {
+ .initial_mode = THERMAL_DEVICE_ENABLED,
+ };
char mfcr_pl[MLXSW_REG_MFCR_LEN] = { 0 };
enum mlxsw_reg_mfcr_pwm_frequency freq;
struct device *dev = bus_info->dev;
@@ -1034,7 +1002,7 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
MLXSW_THERMAL_TRIP_MASK,
thermal,
&mlxsw_thermal_ops,
- NULL, 0,
+ &tzp, 0,
thermal->polling_delay);
if (IS_ERR(thermal->tzdev)) {
err = PTR_ERR(thermal->tzdev);
@@ -1050,7 +1018,6 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
if (err)
goto err_unreg_modules_tzdev;
- thermal->mode = THERMAL_DEVICE_ENABLED;
*p_thermal = thermal;
return 0;
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 8cc86f4e3ac1..aaf8b845be90 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -406,22 +406,9 @@ static inline void acerhdf_enable_kernelmode(void)
kernelmode = 1;
thz_dev->polling_delay = interval*1000;
- thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED);
pr_notice("kernel mode fan control ON\n");
}
-static int acerhdf_get_mode(struct thermal_zone_device *thermal,
- enum thermal_device_mode *mode)
-{
- if (verbose)
- pr_notice("kernel mode fan control %d\n", kernelmode);
-
- *mode = (kernelmode) ? THERMAL_DEVICE_ENABLED
- : THERMAL_DEVICE_DISABLED;
-
- return 0;
-}
-
/*
* set operation mode;
* enabled: the thermal layer of the kernel takes care about
@@ -488,7 +475,6 @@ static struct thermal_zone_device_ops acerhdf_dev_ops = {
.bind = acerhdf_bind,
.unbind = acerhdf_unbind,
.get_temp = acerhdf_get_ec_temp,
- .get_mode = acerhdf_get_mode,
.set_mode = acerhdf_set_mode,
.get_trip_type = acerhdf_get_trip_type,
.get_trip_hyst = acerhdf_get_trip_hyst,
@@ -554,6 +540,7 @@ static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev,
err_out:
acerhdf_revert_to_bios_mode();
+ thz_dev->mode = THERMAL_DEVICE_DISABLED;
return -EINVAL;
}
@@ -739,6 +726,8 @@ static int __init acerhdf_register_thermal(void)
if (IS_ERR(cl_dev))
return -EINVAL;
+ acerhdf_zone_params.initial_mode =
+ kernelmode ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL,
&acerhdf_dev_ops,
&acerhdf_zone_params, 0,
diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
index c32709badeda..4bdb6f9621c1 100644
--- a/drivers/thermal/da9062-thermal.c
+++ b/drivers/thermal/da9062-thermal.c
@@ -49,7 +49,6 @@ struct da9062_thermal {
struct da9062 *hw;
struct delayed_work work;
struct thermal_zone_device *zone;
- enum thermal_device_mode mode;
struct mutex lock; /* protection for da9062_thermal temperature */
int temperature;
int irq;
@@ -121,14 +120,6 @@ static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
-static int da9062_thermal_get_mode(struct thermal_zone_device *z,
- enum thermal_device_mode *mode)
-{
- struct da9062_thermal *thermal = z->devdata;
- *mode = thermal->mode;
- return 0;
-}
-
static int da9062_thermal_get_trip_type(struct thermal_zone_device *z,
int trip,
enum thermal_trip_type *type)
@@ -181,7 +172,6 @@ static int da9062_thermal_get_temp(struct thermal_zone_device *z,
static struct thermal_zone_device_ops da9062_thermal_ops = {
.get_temp = da9062_thermal_get_temp,
- .get_mode = da9062_thermal_get_mode,
.get_trip_type = da9062_thermal_get_trip_type,
.get_trip_temp = da9062_thermal_get_trip_temp,
};
@@ -199,6 +189,9 @@ MODULE_DEVICE_TABLE(of, da9062_compatible_reg_id_table);
static int da9062_thermal_probe(struct platform_device *pdev)
{
+ struct thermal_zone_params tzp = {
+ .initial_mode = THERMAL_DEVICE_ENABLED,
+ };
struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);
struct da9062_thermal *thermal;
unsigned int pp_tmp = DA9062_DEFAULT_POLLING_MS_PERIOD;
@@ -233,7 +226,6 @@ static int da9062_thermal_probe(struct platform_device *pdev)
thermal->config = match->data;
thermal->hw = chip;
- thermal->mode = THERMAL_DEVICE_ENABLED;
thermal->dev = &pdev->dev;
INIT_DELAYED_WORK(&thermal->work, da9062_thermal_poll_on);
@@ -241,7 +233,7 @@ static int da9062_thermal_probe(struct platform_device *pdev)
thermal->zone = thermal_zone_device_register(thermal->config->name,
1, 0, thermal,
- &da9062_thermal_ops, NULL, pp_tmp,
+ &da9062_thermal_ops, &tzp, pp_tmp,
0);
if (IS_ERR(thermal->zone)) {
dev_err(&pdev->dev, "Cannot register thermal zone device\n");
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index e761c9b42217..3e02323c938b 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -197,7 +197,6 @@ struct imx_thermal_data {
struct cpufreq_policy *policy;
struct thermal_zone_device *tz;
struct thermal_cooling_device *cdev;
- enum thermal_device_mode mode;
struct regmap *tempmon;
u32 c1, c2; /* See formula in imx_init_calib() */
int temp_passive;
@@ -256,7 +255,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
bool wait;
u32 val;
- if (data->mode == THERMAL_DEVICE_ENABLED) {
+ if (tz->mode == THERMAL_DEVICE_ENABLED) {
/* Check if a measurement is currently in progress */
regmap_read(map, soc_data->temp_data, &val);
wait = !(val & soc_data->temp_valid_mask);
@@ -283,7 +282,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
regmap_read(map, soc_data->temp_data, &val);
- if (data->mode != THERMAL_DEVICE_ENABLED) {
+ if (tz->mode != THERMAL_DEVICE_ENABLED) {
regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
soc_data->measure_temp_mask);
regmap_write(map, soc_data->sensor_ctrl + REG_SET,
@@ -331,16 +330,6 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
return 0;
}
-static int imx_get_mode(struct thermal_zone_device *tz,
- enum thermal_device_mode *mode)
-{
- struct imx_thermal_data *data = tz->devdata;
-
- *mode = data->mode;
-
- return 0;
-}
-
static int imx_set_mode(struct thermal_zone_device *tz,
enum thermal_device_mode mode)
{
@@ -376,9 +365,6 @@ static int imx_set_mode(struct thermal_zone_device *tz,
}
}
- data->mode = mode;
- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
return 0;
}
@@ -467,7 +453,6 @@ static struct thermal_zone_device_ops imx_tz_ops = {
.bind = imx_bind,
.unbind = imx_unbind,
.get_temp = imx_get_temp,
- .get_mode = imx_get_mode,
.set_mode = imx_set_mode,
.get_trip_type = imx_get_trip_type,
.get_trip_temp = imx_get_trip_temp,
@@ -691,6 +676,9 @@ static inline void imx_thermal_unregister_legacy_cooling(struct imx_thermal_data
static int imx_thermal_probe(struct platform_device *pdev)
{
+ struct thermal_zone_params tzp = {
+ .initial_mode = THERMAL_DEVICE_ENABLED,
+ };
struct imx_thermal_data *data;
struct regmap *map;
int measure_freq;
@@ -799,7 +787,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
data->tz = thermal_zone_device_register("imx_thermal_zone",
IMX_TRIP_NUM,
BIT(IMX_TRIP_PASSIVE), data,
- &imx_tz_ops, NULL,
+ &imx_tz_ops, &tzp,
IMX_PASSIVE_DELAY,
IMX_POLLING_DELAY);
if (IS_ERR(data->tz)) {
@@ -831,7 +819,6 @@ static int imx_thermal_probe(struct platform_device *pdev)
data->socdata->measure_temp_mask);
data->irq_enabled = true;
- data->mode = THERMAL_DEVICE_ENABLED;
ret = devm_request_threaded_irq(&pdev->dev, data->irq,
imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
@@ -885,7 +872,7 @@ static int __maybe_unused imx_thermal_suspend(struct device *dev)
data->socdata->measure_temp_mask);
regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
data->socdata->power_down_mask);
- data->mode = THERMAL_DEVICE_DISABLED;
+ data->tz->mode = THERMAL_DEVICE_DISABLED;
clk_disable_unprepare(data->thermal_clk);
return 0;
@@ -905,7 +892,7 @@ static int __maybe_unused imx_thermal_resume(struct device *dev)
data->socdata->power_down_mask);
regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
data->socdata->measure_temp_mask);
- data->mode = THERMAL_DEVICE_ENABLED;
+ data->tz->mode = THERMAL_DEVICE_ENABLED;
return 0;
}
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index e802922a13cf..86a00598ed09 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -44,7 +44,6 @@ static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
struct int3400_thermal_priv {
struct acpi_device *adev;
struct thermal_zone_device *thermal;
- int mode;
int art_count;
struct art *arts;
int trt_count;
@@ -230,48 +229,29 @@ static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
return 0;
}
-static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
- enum thermal_device_mode *mode)
-{
- struct int3400_thermal_priv *priv = thermal->devdata;
-
- if (!priv)
- return -EINVAL;
-
- *mode = priv->mode;
-
- return 0;
-}
-
static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
enum thermal_device_mode mode)
{
struct int3400_thermal_priv *priv = thermal->devdata;
- bool enable;
int result = 0;
if (!priv)
return -EINVAL;
- if (mode == THERMAL_DEVICE_ENABLED)
- enable = true;
- else if (mode == THERMAL_DEVICE_DISABLED)
- enable = false;
- else
+ if (mode != THERMAL_DEVICE_ENABLED &&
+ mode != THERMAL_DEVICE_DISABLED)
return -EINVAL;
- if (enable != priv->mode) {
- priv->mode = enable;
+ if (mode != thermal->mode) {
result = int3400_thermal_run_osc(priv->adev->handle,
- priv->current_uuid_index,
- enable);
+ priv->current_uuid_index,
+ mode == THERMAL_DEVICE_ENABLED);
}
return result;
}
static struct thermal_zone_device_ops int3400_thermal_ops = {
.get_temp = int3400_thermal_get_temp,
- .get_mode = int3400_thermal_get_mode,
.set_mode = int3400_thermal_set_mode,
};
diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c
index d704fc104cfd..c4879b4bfbf1 100644
--- a/drivers/thermal/intel/intel_quark_dts_thermal.c
+++ b/drivers/thermal/intel/intel_quark_dts_thermal.c
@@ -103,7 +103,6 @@ struct soc_sensor_entry {
bool locked;
u32 store_ptps;
u32 store_dts_enable;
- enum thermal_device_mode mode;
struct thermal_zone_device *tzone;
};
@@ -128,7 +127,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
return ret;
if (out & QRK_DTS_ENABLE_BIT) {
- aux_entry->mode = THERMAL_DEVICE_ENABLED;
+ tzd->mode = THERMAL_DEVICE_ENABLED;
return 0;
}
@@ -139,9 +138,9 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
if (ret)
return ret;
- aux_entry->mode = THERMAL_DEVICE_ENABLED;
+ tzd->mode = THERMAL_DEVICE_ENABLED;
} else {
- aux_entry->mode = THERMAL_DEVICE_DISABLED;
+ tzd->mode = THERMAL_DEVICE_DISABLED;
pr_info("DTS is locked. Cannot enable DTS\n");
ret = -EPERM;
}
@@ -161,7 +160,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
return ret;
if (!(out & QRK_DTS_ENABLE_BIT)) {
- aux_entry->mode = THERMAL_DEVICE_DISABLED;
+ tzd->mode = THERMAL_DEVICE_DISABLED;
return 0;
}
@@ -173,9 +172,9 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
if (ret)
return ret;
- aux_entry->mode = THERMAL_DEVICE_DISABLED;
+ tzd->mode = THERMAL_DEVICE_DISABLED;
} else {
- aux_entry->mode = THERMAL_DEVICE_ENABLED;
+ tzd->mode = THERMAL_DEVICE_ENABLED;
pr_info("DTS is locked. Cannot disable DTS\n");
ret = -EPERM;
}
@@ -309,14 +308,6 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
return 0;
}
-static int sys_get_mode(struct thermal_zone_device *tzd,
- enum thermal_device_mode *mode)
-{
- struct soc_sensor_entry *aux_entry = tzd->devdata;
- *mode = aux_entry->mode;
- return 0;
-}
-
static int sys_set_mode(struct thermal_zone_device *tzd,
enum thermal_device_mode mode)
{
@@ -338,7 +329,6 @@ static struct thermal_zone_device_ops tzone_ops = {
.get_trip_type = sys_get_trip_type,
.set_trip_temp = sys_set_trip_temp,
.get_crit_temp = sys_get_crit_temp,
- .get_mode = sys_get_mode,
.set_mode = sys_set_mode,
};
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 874a47d6923f..863b89546f81 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -51,7 +51,6 @@ struct __thermal_bind_params {
/**
* struct __thermal_zone - internal representation of a thermal zone
- * @mode: current thermal zone device mode (enabled/disabled)
* @passive_delay: polling interval while passive cooling is activated
* @polling_delay: zone polling interval
* @slope: slope of the temperature adjustment curve
@@ -65,7 +64,6 @@ struct __thermal_bind_params {
*/
struct __thermal_zone {
- enum thermal_device_mode mode;
int passive_delay;
int polling_delay;
int slope;
@@ -269,23 +267,11 @@ static int of_thermal_unbind(struct thermal_zone_device *thermal,
return 0;
}
-static int of_thermal_get_mode(struct thermal_zone_device *tz,
- enum thermal_device_mode *mode)
-{
- struct __thermal_zone *data = tz->devdata;
-
- *mode = data->mode;
-
- return 0;
-}
-
static int of_thermal_set_mode(struct thermal_zone_device *tz,
enum thermal_device_mode mode)
{
struct __thermal_zone *data = tz->devdata;
- mutex_lock(&tz->lock);
-
if (mode == THERMAL_DEVICE_ENABLED) {
tz->polling_delay = data->polling_delay;
tz->passive_delay = data->passive_delay;
@@ -294,11 +280,6 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
tz->passive_delay = 0;
}
- mutex_unlock(&tz->lock);
-
- data->mode = mode;
- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
return 0;
}
@@ -393,7 +374,6 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
}
static struct thermal_zone_device_ops of_thermal_ops = {
- .get_mode = of_thermal_get_mode,
.set_mode = of_thermal_set_mode,
.get_trip_type = of_thermal_get_trip_type,
@@ -553,8 +533,14 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data,
if (id == sensor_id) {
tzd = thermal_zone_of_add_sensor(child, sensor_np,
data, ops);
- if (!IS_ERR(tzd))
+ if (!IS_ERR(tzd)) {
+ mutex_lock(&tzd->lock);
tzd->ops->set_mode(tzd, THERMAL_DEVICE_ENABLED);
+ tzd->mode = THERMAL_DEVICE_ENABLED;
+ mutex_unlock(&tzd->lock);
+ thermal_zone_device_update(tzd,
+ THERMAL_EVENT_UNSPECIFIED);
+ }
of_node_put(child);
goto exit;
@@ -979,7 +965,6 @@ __init *thermal_of_build_thermal_zone(struct device_node *np)
finish:
of_node_put(child);
- tz->mode = THERMAL_DEVICE_DISABLED;
return tz;
@@ -1120,6 +1105,7 @@ int __init of_parse_thermal_zones(void)
/* these two are left for temperature drivers to use */
tzp->slope = tz->slope;
tzp->offset = tz->offset;
+ tzp->initial_mode = THERMAL_DEVICE_DISABLED;
zone = thermal_zone_device_register(child->name, tz->ntrips,
mask, tz,
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index c06550930979..5ff98fcc0f6a 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -463,6 +463,43 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz)
thermal_zone_device_init(tz);
}
+enum thermal_device_mode
+thermal_zone_device_get_mode(struct thermal_zone_device *tz)
+{
+ enum thermal_device_mode mode;
+
+ mutex_lock(&tz->lock);
+
+ mode = tz->mode;
+
+ mutex_unlock(&tz->lock);
+
+ return mode;
+}
+
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode)
+{
+ int ret = 0;
+
+ if (mode != THERMAL_DEVICE_DISABLED &&
+ mode != THERMAL_DEVICE_ENABLED)
+ return -EINVAL;
+
+ mutex_lock(&tz->lock);
+
+ if (tz->ops->set_mode)
+ ret = tz->ops->set_mode(tz, mode);
+
+ tz->mode = mode;
+
+ mutex_unlock(&tz->lock);
+
+ thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
+
+ return ret;
+}
+
void thermal_zone_device_update(struct thermal_zone_device *tz,
enum thermal_notify_event event)
{
@@ -1344,6 +1381,9 @@ thermal_zone_device_register(const char *type, int trips, int mask,
if (atomic_cmpxchg(&tz->need_update, 1, 0))
thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
+ if (tzp)
+ thermal_zone_device_set_mode(tz, tzp->initial_mode);
+
return tz;
unregister:
@@ -1473,9 +1513,7 @@ static int thermal_pm_notify(struct notifier_block *nb,
case PM_POST_SUSPEND:
atomic_set(&in_suspend, 0);
list_for_each_entry(tz, &thermal_tz_list, node) {
- tz_mode = THERMAL_DEVICE_ENABLED;
- if (tz->ops->get_mode)
- tz->ops->get_mode(tz, &tz_mode);
+ tz_mode = thermal_zone_device_get_mode(tz);
if (tz_mode == THERMAL_DEVICE_DISABLED)
continue;
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index c95689586e19..8e561bac3133 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -141,6 +141,22 @@ thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
unsigned long new_state) {}
#endif /* CONFIG_THERMAL_STATISTICS */
+enum thermal_device_mode
+thermal_zone_device_get_mode(struct thermal_zone_device *tz);
+
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode);
+
+static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
+{
+ return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
+}
+
+static inline int thermal_zone_device_disable(struct thermal_zone_device *tz)
+{
+ return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
+}
+
/* device tree support */
#ifdef CONFIG_THERMAL_OF
int of_parse_thermal_zones(void);
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index aa99edb4dff7..cbb27b3c96d2 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -50,14 +50,8 @@ mode_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
enum thermal_device_mode mode;
- int result;
-
- if (!tz->ops->get_mode)
- return -EPERM;
- result = tz->ops->get_mode(tz, &mode);
- if (result)
- return result;
+ mode = thermal_zone_device_get_mode(tz);
return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
: "disabled");
@@ -74,9 +68,9 @@ mode_store(struct device *dev, struct device_attribute *attr,
return -EPERM;
if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
- result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
+ result = thermal_zone_device_enable(tz);
else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
- result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
+ result = thermal_zone_device_disable(tz);
else
result = -EINVAL;
@@ -428,30 +422,13 @@ static struct attribute_group thermal_zone_attribute_group = {
.attrs = thermal_zone_dev_attrs,
};
-/* We expose mode only if .get_mode is present */
static struct attribute *thermal_zone_mode_attrs[] = {
&dev_attr_mode.attr,
NULL,
};
-static umode_t thermal_zone_mode_is_visible(struct kobject *kobj,
- struct attribute *attr,
- int attrno)
-{
- struct device *dev = container_of(kobj, struct device, kobj);
- struct thermal_zone_device *tz;
-
- tz = container_of(dev, struct thermal_zone_device, device);
-
- if (tz->ops->get_mode)
- return attr->mode;
-
- return 0;
-}
-
static struct attribute_group thermal_zone_mode_attribute_group = {
.attrs = thermal_zone_mode_attrs,
- .is_visible = thermal_zone_mode_is_visible,
};
/* We expose passive only if passive trips are present */
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 216185bb3014..da4141697e2e 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -76,8 +76,6 @@ struct thermal_zone_device_ops {
struct thermal_cooling_device *);
int (*get_temp) (struct thermal_zone_device *, int *);
int (*set_trips) (struct thermal_zone_device *, int, int);
- int (*get_mode) (struct thermal_zone_device *,
- enum thermal_device_mode *);
int (*set_mode) (struct thermal_zone_device *,
enum thermal_device_mode);
int (*get_trip_type) (struct thermal_zone_device *, int,
@@ -128,6 +126,7 @@ struct thermal_cooling_device {
* @trip_temp_attrs: attributes for trip points for sysfs: trip temperature
* @trip_type_attrs: attributes for trip points for sysfs: trip type
* @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis
+ * @mode: current mode of this thermal zone
* @devdata: private pointer for device private data
* @trips: number of trip points the thermal zone supports
* @trips_disabled; bitmap for disabled trips
@@ -170,6 +169,7 @@ struct thermal_zone_device {
struct thermal_attr *trip_temp_attrs;
struct thermal_attr *trip_type_attrs;
struct thermal_attr *trip_hyst_attrs;
+ enum thermal_device_mode mode;
void *devdata;
int trips;
unsigned long trips_disabled; /* bitmap for disabled trips */
@@ -264,6 +264,9 @@ struct thermal_zone_params {
int num_tbps; /* Number of tbp entries */
struct thermal_bind_params *tbp;
+ /* Initial mode of this thermal zone device */
+ enum thermal_device_mode initial_mode;
+
/*
* Sustainable power (heat) that this thermal zone can dissipate in
* mW
--
2.17.1
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