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-rw-r--r--drivers/thermal/Kconfig19
-rw-r--r--drivers/thermal/Makefile3
-rw-r--r--drivers/thermal/armada_thermal.c6
-rw-r--r--drivers/thermal/cpu_cooling.c8
-rw-r--r--drivers/thermal/devfreq_cooling.c573
-rw-r--r--drivers/thermal/imx_thermal.c75
-rw-r--r--drivers/thermal/of-thermal.c2
-rw-r--r--drivers/thermal/power_allocator.c26
-rw-r--r--drivers/thermal/rcar_thermal.c49
-rw-r--r--drivers/thermal/rockchip_thermal.c353
-rw-r--r--drivers/thermal/samsung/exynos_tmu.c68
-rw-r--r--drivers/thermal/ti-soc-thermal/Kconfig15
-rw-r--r--drivers/thermal/ti-soc-thermal/Makefile1
-rw-r--r--drivers/thermal/ti-soc-thermal/omap3-thermal-data.c176
-rw-r--r--drivers/thermal/ti-soc-thermal/ti-bandgap.c14
-rw-r--r--drivers/thermal/ti-soc-thermal/ti-bandgap.h11
16 files changed, 1190 insertions, 209 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 5aabc4b..8cc4ac6 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -147,6 +147,20 @@ config CLOCK_THERMAL
device that is configured to use this cooling mechanism will be
controlled to reduce clock frequency whenever temperature is high.
+config DEVFREQ_THERMAL
+ bool "Generic device cooling support"
+ depends on PM_DEVFREQ
+ depends on PM_OPP
+ help
+ This implements the generic devfreq cooling mechanism through
+ frequency reduction for devices using devfreq.
+
+ This will throttle the device by limiting the maximum allowed DVFS
+ frequency corresponding to the cooling level.
+
+ In order to use the power extensions of the cooling device,
+ devfreq should use the simple_ondemand governor.
+
If you want this support, you should say Y here.
config THERMAL_EMULATION
@@ -275,6 +289,7 @@ config X86_PKG_TEMP_THERMAL
tristate "X86 package temperature thermal driver"
depends on X86_THERMAL_VECTOR
select THERMAL_GOV_USER_SPACE
+ select THERMAL_WRITABLE_TRIPS
default m
help
Enable this to register CPU digital sensor for package temperature as
@@ -296,6 +311,7 @@ config INTEL_SOC_DTS_THERMAL
tristate "Intel SoCs DTS thermal driver"
depends on X86
select INTEL_SOC_DTS_IOSF_CORE
+ select THERMAL_WRITABLE_TRIPS
help
Enable this to register Intel SoCs (e.g. Bay Trail) platform digital
temperature sensor (DTS). These SoCs have two additional DTSs in
@@ -322,6 +338,7 @@ config INT340X_THERMAL
select ACPI_THERMAL_REL
select ACPI_FAN
select INTEL_SOC_DTS_IOSF_CORE
+ select THERMAL_WRITABLE_TRIPS
help
Newer laptops and tablets that use ACPI may have thermal sensors and
other devices with thermal control capabilities outside the core
@@ -365,7 +382,7 @@ endmenu
config QCOM_SPMI_TEMP_ALARM
tristate "Qualcomm SPMI PMIC Temperature Alarm"
- depends on OF && (SPMI || COMPILE_TEST) && IIO
+ depends on OF && SPMI && IIO
select REGMAP_SPMI
help
This enables a thermal sysfs driver for Qualcomm plug-and-play (QPNP)
diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
index 26f1608..cfae6a6 100644
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -22,6 +22,9 @@ thermal_sys-$(CONFIG_CPU_THERMAL) += cpu_cooling.o
# clock cooling
thermal_sys-$(CONFIG_CLOCK_THERMAL) += clock_cooling.o
+# devfreq cooling
+thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o
+
# platform thermal drivers
obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o
obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
index 26b8d32..ae75328 100644
--- a/drivers/thermal/armada_thermal.c
+++ b/drivers/thermal/armada_thermal.c
@@ -224,9 +224,9 @@ static const struct armada_thermal_data armada380_data = {
.is_valid_shift = 10,
.temp_shift = 0,
.temp_mask = 0x3ff,
- .coef_b = 2931108200UL,
- .coef_m = 5000000UL,
- .coef_div = 10502,
+ .coef_b = 1172499100UL,
+ .coef_m = 2000096UL,
+ .coef_div = 4201,
.inverted = true,
};
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 42c6f71..e3fbc5a 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -591,8 +591,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
if (trace_thermal_power_cpu_get_power_enabled()) {
u32 ncpus = cpumask_weight(&cpufreq_device->allowed_cpus);
- load_cpu = devm_kcalloc(&cdev->device, ncpus, sizeof(*load_cpu),
- GFP_KERNEL);
+ load_cpu = kcalloc(ncpus, sizeof(*load_cpu), GFP_KERNEL);
}
for_each_cpu(cpu, &cpufreq_device->allowed_cpus) {
@@ -615,8 +614,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
dynamic_power = get_dynamic_power(cpufreq_device, freq);
ret = get_static_power(cpufreq_device, tz, freq, &static_power);
if (ret) {
- if (load_cpu)
- devm_kfree(&cdev->device, load_cpu);
+ kfree(load_cpu);
return ret;
}
@@ -625,7 +623,7 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
&cpufreq_device->allowed_cpus,
freq, load_cpu, i, dynamic_power, static_power);
- devm_kfree(&cdev->device, load_cpu);
+ kfree(load_cpu);
}
*power = static_power + dynamic_power;
diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c
new file mode 100644
index 0000000..01f0015
--- /dev/null
+++ b/drivers/thermal/devfreq_cooling.c
@@ -0,0 +1,573 @@
+/*
+ * devfreq_cooling: Thermal cooling device implementation for devices using
+ * devfreq
+ *
+ * Copyright (C) 2014-2015 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * TODO:
+ * - If OPPs are added or removed after devfreq cooling has
+ * registered, the devfreq cooling won't react to it.
+ */
+
+#include <linux/devfreq.h>
+#include <linux/devfreq_cooling.h>
+#include <linux/export.h>
+#include <linux/slab.h>
+#include <linux/pm_opp.h>
+#include <linux/thermal.h>
+
+#include <trace/events/thermal.h>
+
+static DEFINE_MUTEX(devfreq_lock);
+static DEFINE_IDR(devfreq_idr);
+
+/**
+ * struct devfreq_cooling_device - Devfreq cooling device
+ * @id: unique integer value corresponding to each
+ * devfreq_cooling_device registered.
+ * @cdev: Pointer to associated thermal cooling device.
+ * @devfreq: Pointer to associated devfreq device.
+ * @cooling_state: Current cooling state.
+ * @power_table: Pointer to table with maximum power draw for each
+ * cooling state. State is the index into the table, and
+ * the power is in mW.
+ * @freq_table: Pointer to a table with the frequencies sorted in descending
+ * order. You can index the table by cooling device state
+ * @freq_table_size: Size of the @freq_table and @power_table
+ * @power_ops: Pointer to devfreq_cooling_power, used to generate the
+ * @power_table.
+ */
+struct devfreq_cooling_device {
+ int id;
+ struct thermal_cooling_device *cdev;
+ struct devfreq *devfreq;
+ unsigned long cooling_state;
+ u32 *power_table;
+ u32 *freq_table;
+ size_t freq_table_size;
+ struct devfreq_cooling_power *power_ops;
+};
+
+/**
+ * get_idr - function to get a unique id.
+ * @idr: struct idr * handle used to create a id.
+ * @id: int * value generated by this function.
+ *
+ * This function will populate @id with an unique
+ * id, using the idr API.
+ *
+ * Return: 0 on success, an error code on failure.
+ */
+static int get_idr(struct idr *idr, int *id)
+{
+ int ret;
+
+ mutex_lock(&devfreq_lock);
+ ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
+ mutex_unlock(&devfreq_lock);
+ if (unlikely(ret < 0))
+ return ret;
+ *id = ret;
+
+ return 0;
+}
+
+/**
+ * release_idr - function to free the unique id.
+ * @idr: struct idr * handle used for creating the id.
+ * @id: int value representing the unique id.
+ */
+static void release_idr(struct idr *idr, int id)
+{
+ mutex_lock(&devfreq_lock);
+ idr_remove(idr, id);
+ mutex_unlock(&devfreq_lock);
+}
+
+/**
+ * partition_enable_opps() - disable all opps above a given state
+ * @dfc: Pointer to devfreq we are operating on
+ * @cdev_state: cooling device state we're setting
+ *
+ * Go through the OPPs of the device, enabling all OPPs until
+ * @cdev_state and disabling those frequencies above it.
+ */
+static int partition_enable_opps(struct devfreq_cooling_device *dfc,
+ unsigned long cdev_state)
+{
+ int i;
+ struct device *dev = dfc->devfreq->dev.parent;
+
+ for (i = 0; i < dfc->freq_table_size; i++) {
+ struct dev_pm_opp *opp;
+ int ret = 0;
+ unsigned int freq = dfc->freq_table[i];
+ bool want_enable = i >= cdev_state ? true : false;
+
+ rcu_read_lock();
+ opp = dev_pm_opp_find_freq_exact(dev, freq, !want_enable);
+ rcu_read_unlock();
+
+ if (PTR_ERR(opp) == -ERANGE)
+ continue;
+ else if (IS_ERR(opp))
+ return PTR_ERR(opp);
+
+ if (want_enable)
+ ret = dev_pm_opp_enable(dev, freq);
+ else
+ ret = dev_pm_opp_disable(dev, freq);
+
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int devfreq_cooling_get_max_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+{
+ struct devfreq_cooling_device *dfc = cdev->devdata;
+
+ *state = dfc->freq_table_size - 1;
+
+ return 0;
+}
+
+static int devfreq_cooling_get_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+{
+ struct devfreq_cooling_device *dfc = cdev->devdata;
+
+ *state = dfc->cooling_state;
+
+ return 0;
+}
+
+static int devfreq_cooling_set_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long state)
+{
+ struct devfreq_cooling_device *dfc = cdev->devdata;
+ struct devfreq *df = dfc->devfreq;
+ struct device *dev = df->dev.parent;
+ int ret;
+
+ if (state == dfc->cooling_state)
+ return 0;
+
+ dev_dbg(dev, "Setting cooling state %lu\n", state);
+
+ if (state >= dfc->freq_table_size)
+ return -EINVAL;
+
+ ret = partition_enable_opps(dfc, state);
+ if (ret)
+ return ret;
+
+ dfc->cooling_state = state;
+
+ return 0;
+}
+
+/**
+ * freq_get_state() - get the cooling state corresponding to a frequency
+ * @dfc: Pointer to devfreq cooling device
+ * @freq: frequency in Hz
+ *
+ * Return: the cooling state associated with the @freq, or
+ * THERMAL_CSTATE_INVALID if it wasn't found.
+ */
+static unsigned long
+freq_get_state(struct devfreq_cooling_device *dfc, unsigned long freq)
+{
+ int i;
+
+ for (i = 0; i < dfc->freq_table_size; i++) {
+ if (dfc->freq_table[i] == freq)
+ return i;
+ }
+
+ return THERMAL_CSTATE_INVALID;
+}
+
+/**
+ * get_static_power() - calculate the static power
+ * @dfc: Pointer to devfreq cooling device
+ * @freq: Frequency in Hz
+ *
+ * Calculate the static power in milliwatts using the supplied
+ * get_static_power(). The current voltage is calculated using the
+ * OPP library. If no get_static_power() was supplied, assume the
+ * static power is negligible.
+ */
+static unsigned long
+get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
+{
+ struct devfreq *df = dfc->devfreq;
+ struct device *dev = df->dev.parent;
+ unsigned long voltage;
+ struct dev_pm_opp *opp;
+
+ if (!dfc->power_ops->get_static_power)
+ return 0;
+
+ rcu_read_lock();
+
+ opp = dev_pm_opp_find_freq_exact(dev, freq, true);
+ if (IS_ERR(opp) && (PTR_ERR(opp) == -ERANGE))
+ opp = dev_pm_opp_find_freq_exact(dev, freq, false);
+
+ voltage = dev_pm_opp_get_voltage(opp) / 1000; /* mV */
+
+ rcu_read_unlock();
+
+ if (voltage == 0) {
+ dev_warn_ratelimited(dev,
+ "Failed to get voltage for frequency %lu: %ld\n",
+ freq, IS_ERR(opp) ? PTR_ERR(opp) : 0);
+ return 0;
+ }
+
+ return dfc->power_ops->get_static_power(voltage);
+}
+
+/**
+ * get_dynamic_power - calculate the dynamic power
+ * @dfc: Pointer to devfreq cooling device
+ * @freq: Frequency in Hz
+ * @voltage: Voltage in millivolts
+ *
+ * Calculate the dynamic power in milliwatts consumed by the device at
+ * frequency @freq and voltage @voltage. If the get_dynamic_power()
+ * was supplied as part of the devfreq_cooling_power struct, then that
+ * function is used. Otherwise, a simple power model (Pdyn = Coeff *
+ * Voltage^2 * Frequency) is used.
+ */
+static unsigned long
+get_dynamic_power(struct devfreq_cooling_device *dfc, unsigned long freq,
+ unsigned long voltage)
+{
+ u64 power;
+ u32 freq_mhz;
+ struct devfreq_cooling_power *dfc_power = dfc->power_ops;
+
+ if (dfc_power->get_dynamic_power)
+ return dfc_power->get_dynamic_power(freq, voltage);
+
+ freq_mhz = freq / 1000000;
+ power = (u64)dfc_power->dyn_power_coeff * freq_mhz * voltage * voltage;
+ do_div(power, 1000000000);
+
+ return power;
+}
+
+static int devfreq_cooling_get_requested_power(struct thermal_cooling_device *cdev,
+ struct thermal_zone_device *tz,
+ u32 *power)
+{
+ struct devfreq_cooling_device *dfc = cdev->devdata;
+ struct devfreq *df = dfc->devfreq;
+ struct devfreq_dev_status *status = &df->last_status;
+ unsigned long state;
+ unsigned long freq = status->current_frequency;
+ u32 dyn_power, static_power;
+
+ /* Get dynamic power for state */
+ state = freq_get_state(dfc, freq);
+ if (state == THERMAL_CSTATE_INVALID)
+ return -EAGAIN;
+
+ dyn_power = dfc->power_table[state];
+
+ /* Scale dynamic power for utilization */
+ dyn_power = (dyn_power * status->busy_time) / status->total_time;
+
+ /* Get static power */
+ static_power = get_static_power(dfc, freq);
+
+ trace_thermal_power_devfreq_get_power(cdev, status, freq, dyn_power,
+ static_power);
+
+ *power = dyn_power + static_power;
+
+ return 0;
+}
+
+static int devfreq_cooling_state2power(struct thermal_cooling_device *cdev,
+ struct thermal_zone_device *tz,
+ unsigned long state,
+ u32 *power)
+{
+ struct devfreq_cooling_device *dfc = cdev->devdata;
+ unsigned long freq;
+ u32 static_power;
+
+ if (state < 0 || state >= dfc->freq_table_size)
+ return -EINVAL;
+
+ freq = dfc->freq_table[state];
+ static_power = get_static_power(dfc, freq);
+
+ *power = dfc->power_table[state] + static_power;
+ return 0;
+}
+
+static int devfreq_cooling_power2state(struct thermal_cooling_device *cdev,
+ struct thermal_zone_device *tz,
+ u32 power, unsigned long *state)
+{
+ struct devfreq_cooling_device *dfc = cdev->devdata;
+ struct devfreq *df = dfc->devfreq;
+ struct devfreq_dev_status *status = &df->last_status;
+ unsigned long freq = status->current_frequency;
+ unsigned long busy_time;
+ s32 dyn_power;
+ u32 static_power;
+ int i;
+
+ static_power = get_static_power(dfc, freq);
+
+ dyn_power = power - static_power;
+ dyn_power = dyn_power > 0 ? dyn_power : 0;
+
+ /* Scale dynamic power for utilization */
+ busy_time = status->busy_time ?: 1;
+ dyn_power = (dyn_power * status->total_time) / busy_time;
+
+ /*
+ * Find the first cooling state that is within the power
+ * budget for dynamic power.
+ */
+ for (i = 0; i < dfc->freq_table_size - 1; i++)
+ if (dyn_power >= dfc->power_table[i])
+ break;
+
+ *state = i;
+ trace_thermal_power_devfreq_limit(cdev, freq, *state, power);
+ return 0;
+}
+
+static struct thermal_cooling_device_ops devfreq_cooling_ops = {
+ .get_max_state = devfreq_cooling_get_max_state,
+ .get_cur_state = devfreq_cooling_get_cur_state,
+ .set_cur_state = devfreq_cooling_set_cur_state,
+};
+
+/**
+ * devfreq_cooling_gen_tables() - Generate power and freq tables.
+ * @dfc: Pointer to devfreq cooling device.
+ *
+ * Generate power and frequency tables: the power table hold the
+ * device's maximum power usage at each cooling state (OPP). The
+ * static and dynamic power using the appropriate voltage and
+ * frequency for the state, is acquired from the struct
+ * devfreq_cooling_power, and summed to make the maximum power draw.
+ *
+ * The frequency table holds the frequencies in descending order.
+ * That way its indexed by cooling device state.
+ *
+ * The tables are malloced, and pointers put in dfc. They must be
+ * freed when unregistering the devfreq cooling device.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+static int devfreq_cooling_gen_tables(struct devfreq_cooling_device *dfc)
+{
+ struct devfreq *df = dfc->devfreq;
+ struct device *dev = df->dev.parent;
+ int ret, num_opps;
+ unsigned long freq;
+ u32 *power_table = NULL;
+ u32 *freq_table;
+ int i;
+
+ num_opps = dev_pm_opp_get_opp_count(dev);
+
+ if (dfc->power_ops) {
+ power_table = kcalloc(num_opps, sizeof(*power_table),
+ GFP_KERNEL);
+ if (!power_table)
+ return -ENOMEM;
+ }
+
+ freq_table = kcalloc(num_opps, sizeof(*freq_table),
+ GFP_KERNEL);
+ if (!freq_table) {
+ ret = -ENOMEM;
+ goto free_power_table;
+ }
+
+ for (i = 0, freq = ULONG_MAX; i < num_opps; i++, freq--) {
+ unsigned long power_dyn, voltage;
+ struct dev_pm_opp *opp;
+
+ rcu_read_lock();
+
+ opp = dev_pm_opp_find_freq_floor(dev, &freq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ ret = PTR_ERR(opp);
+ goto free_tables;
+ }
+
+ voltage = dev_pm_opp_get_voltage(opp) / 1000; /* mV */
+
+ rcu_read_unlock();
+
+ if (dfc->power_ops) {
+ power_dyn = get_dynamic_power(dfc, freq, voltage);
+
+ dev_dbg(dev, "Dynamic power table: %lu MHz @ %lu mV: %lu = %lu mW\n",
+ freq / 1000000, voltage, power_dyn, power_dyn);
+
+ power_table[i] = power_dyn;
+ }
+
+ freq_table[i] = freq;
+ }
+
+ if (dfc->power_ops)
+ dfc->power_table = power_table;
+
+ dfc->freq_table = freq_table;
+ dfc->freq_table_size = num_opps;
+
+ return 0;
+
+free_tables:
+ kfree(freq_table);
+free_power_table:
+ kfree(power_table);
+
+ return ret;
+}
+
+/**
+ * of_devfreq_cooling_register_power() - Register devfreq cooling device,
+ * with OF and power information.
+ * @np: Pointer to OF device_node.
+ * @df: Pointer to devfreq device.
+ * @dfc_power: Pointer to devfreq_cooling_power.
+ *
+ * Register a devfreq cooling device. The available OPPs must be
+ * registered on the device.
+ *
+ * If @dfc_power is provided, the cooling device is registered with the
+ * power extensions. For the power extensions to work correctly,
+ * devfreq should use the simple_ondemand governor, other governors
+ * are not currently supported.
+ */
+struct thermal_cooling_device *
+of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
+ struct devfreq_cooling_power *dfc_power)
+{
+ struct thermal_cooling_device *cdev;
+ struct devfreq_cooling_device *dfc;
+ char dev_name[THERMAL_NAME_LENGTH];
+ int err;
+
+ dfc = kzalloc(sizeof(*dfc), GFP_KERNEL);
+ if (!dfc)
+ return ERR_PTR(-ENOMEM);
+
+ dfc->devfreq = df;
+
+ if (dfc_power) {
+ dfc->power_ops = dfc_power;
+
+ devfreq_cooling_ops.get_requested_power =
+ devfreq_cooling_get_requested_power;
+ devfreq_cooling_ops.state2power = devfreq_cooling_state2power;
+ devfreq_cooling_ops.power2state = devfreq_cooling_power2state;
+ }
+
+ err = devfreq_cooling_gen_tables(dfc);
+ if (err)
+ goto free_dfc;
+
+ err = get_idr(&devfreq_idr, &dfc->id);
+ if (err)
+ goto free_tables;
+
+ snprintf(dev_name, sizeof(dev_name), "thermal-devfreq-%d", dfc->id);
+
+ cdev = thermal_of_cooling_device_register(np, dev_name, dfc,
+ &devfreq_cooling_ops);
+ if (IS_ERR(cdev)) {
+ err = PTR_ERR(cdev);
+ dev_err(df->dev.parent,
+ "Failed to register devfreq cooling device (%d)\n",
+ err);
+ goto release_idr;
+ }
+
+ dfc->cdev = cdev;
+
+ return cdev;
+
+release_idr:
+ release_idr(&devfreq_idr, dfc->id);
+free_tables:
+ kfree(dfc->power_table);
+ kfree(dfc->freq_table);
+free_dfc:
+ kfree(dfc);
+
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(of_devfreq_cooling_register_power);
+
+/**
+ * of_devfreq_cooling_register() - Register devfreq cooling device,
+ * with OF information.
+ * @np: Pointer to OF device_node.
+ * @df: Pointer to devfreq device.
+ */
+struct thermal_cooling_device *
+of_devfreq_cooling_register(struct device_node *np, struct devfreq *df)
+{
+ return of_devfreq_cooling_register_power(np, df, NULL);
+}
+EXPORT_SYMBOL_GPL(of_devfreq_cooling_register);
+
+/**
+ * devfreq_cooling_register() - Register devfreq cooling device.
+ * @df: Pointer to devfreq device.
+ */
+struct thermal_cooling_device *devfreq_cooling_register(struct devfreq *df)
+{
+ return of_devfreq_cooling_register(NULL, df);
+}
+EXPORT_SYMBOL_GPL(devfreq_cooling_register);
+
+/**
+ * devfreq_cooling_unregister() - Unregister devfreq cooling device.
+ * @dfc: Pointer to devfreq cooling device to unregister.
+ */
+void devfreq_cooling_unregister(struct thermal_cooling_device *cdev)
+{
+ struct devfreq_cooling_device *dfc;
+
+ if (!cdev)
+ return;
+
+ dfc = cdev->devdata;
+
+ thermal_cooling_device_unregister(dfc->cdev);
+ release_idr(&devfreq_idr, dfc->id);
+ kfree(dfc->power_table);
+ kfree(dfc->freq_table);
+
+ kfree(dfc);
+}
+EXPORT_SYMBOL_GPL(devfreq_cooling_unregister);
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 4bec1d3..c5547bd 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -55,6 +55,7 @@
#define TEMPSENSE2_PANIC_VALUE_SHIFT 16
#define TEMPSENSE2_PANIC_VALUE_MASK 0xfff0000
+#define OCOTP_MEM0 0x0480
#define OCOTP_ANA1 0x04e0
/* The driver supports 1 passive trip point and 1 critical trip point */
@@ -64,12 +65,6 @@ enum imx_thermal_trip {
IMX_TRIP_NUM,
};
-/*
- * It defines the temperature in millicelsius for passive trip point
- * that will trigger cooling action when crossed.
- */
-#define IMX_TEMP_PASSIVE 85000
-
#define IMX_POLLING_DELAY 2000 /* millisecond */
#define IMX_PASSIVE_DELAY 1000
@@ -100,12 +95,14 @@ struct imx_thermal_data {
u32 c1, c2; /* See formula in imx_get_sensor_data() */
int temp_passive;
int temp_critical;
+ int temp_max;
int alarm_temp;
int last_temp;
bool irq_enabled;
int irq;
struct clk *thermal_clk;
const struct thermal_soc_data *socdata;
+ const char *temp_grade;
};
static void imx_set_panic_temp(struct imx_thermal_data *data,
@@ -285,10 +282,12 @@ static int imx_set_trip_temp(struct thermal_zone_device *tz, int trip,
{
struct imx_thermal_data *data = tz->devdata;
+ /* do not allow changing critical threshold */
if (trip == IMX_TRIP_CRITICAL)
return -EPERM;
- if (temp > IMX_TEMP_PASSIVE)
+ /* do not allow passive to be set higher than critical */
+ if (temp < 0 || temp > data->temp_critical)
return -EINVAL;
data->temp_passive = temp;
@@ -404,17 +403,39 @@ static int imx_get_sensor_data(struct platform_device *pdev)
data->c1 = temp64;
data->c2 = n1 * data->c1 + 1000 * t1;
- /*
- * Set the default passive cooling trip point,
- * can be changed from userspace.
- */
- data->temp_passive = IMX_TEMP_PASSIVE;
+ /* use OTP for thermal grade */
+ ret = regmap_read(map, OCOTP_MEM0, &val);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to read temp grade: %d\n", ret);
+ return ret;
+ }
+
+ /* The maximum die temp is specified by the Temperature Grade */
+ switch ((val >> 6) & 0x3) {
+ case 0: /* Commercial (0 to 95C) */
+ data->temp_grade = "Commercial";
+ data->temp_max = 95000;
+ break;
+ case 1: /* Extended Commercial (-20 to 105C) */
+ data->temp_grade = "Extended Commercial";
+ data->temp_max = 105000;
+ break;
+ case 2: /* Industrial (-40 to 105C) */
+ data->temp_grade = "Industrial";
+ data->temp_max = 105000;
+ break;
+ case 3: /* Automotive (-40 to 125C) */
+ data->temp_grade = "Automotive";
+ data->temp_max = 125000;
+ break;
+ }
/*
- * The maximum die temperature set to 20 C higher than
- * IMX_TEMP_PASSIVE.
+ * Set the critical trip point at 5C under max
+ * Set the passive trip point at 10C under max (can change via sysfs)
*/
- data->temp_critical = 1000 * 20 + data->temp_passive;
+ data->temp_critical = data->temp_max - (1000 * 5);
+ data->temp_passive = data->temp_max - (1000 * 10);
return 0;
}
@@ -487,14 +508,6 @@ static int imx_thermal_probe(struct platform_device *pdev)
if (data->irq < 0)
return data->irq;
- ret = devm_request_threaded_irq(&pdev->dev, data->irq,
- imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
- 0, "imx_thermal", data);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
- return ret;
- }
-
platform_set_drvdata(pdev, data);
ret = imx_get_sensor_data(pdev);
@@ -559,6 +572,11 @@ static int imx_thermal_probe(struct platform_device *pdev)
return ret;
}
+ dev_info(&pdev->dev, "%s CPU temperature grade - max:%dC"
+ " critical:%dC passive:%dC\n", data->temp_grade,
+ data->temp_max / 1000, data->temp_critical / 1000,
+ data->temp_passive / 1000);
+
/* Enable measurements at ~ 10 Hz */
regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ);
measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */
@@ -571,6 +589,17 @@ static int imx_thermal_probe(struct platform_device *pdev)
regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
+ ret = devm_request_threaded_irq(&pdev->dev, data->irq,
+ imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
+ 0, "imx_thermal", data);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
+ clk_disable_unprepare(data->thermal_clk);
+ thermal_zone_device_unregister(data->tz);
+ cpufreq_cooling_unregister(data->cdev);
+ return ret;
+ }
+
data->irq_enabled = true;
data->mode = THERMAL_DEVICE_ENABLED;
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 42b7d42..be4eedc 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -964,7 +964,7 @@ void of_thermal_destroy_zones(void)
np = of_find_node_by_name(NULL, "thermal-zones");
if (!np) {
- pr_err("unable to find thermal zones\n");
+ pr_debug("unable to find thermal zones\n");
return;
}
diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c
index e570ff0..1246aa6 100644
--- a/drivers/thermal/power_allocator.c
+++ b/drivers/thermal/power_allocator.c
@@ -174,7 +174,6 @@ static void estimate_pid_constants(struct thermal_zone_device *tz,
/**
* pid_controller() - PID controller
* @tz: thermal zone we are operating in
- * @current_temp: the current temperature in millicelsius
* @control_temp: the target temperature in millicelsius
* @max_allocatable_power: maximum allocatable power for this thermal zone
*
@@ -191,7 +190,6 @@ static void estimate_pid_constants(struct thermal_zone_device *tz,
* Return: The power budget for the next period.
*/
static u32 pid_controller(struct thermal_zone_device *tz,
- int current_temp,
int control_temp,
u32 max_allocatable_power)
{
@@ -211,7 +209,7 @@ static u32 pid_controller(struct thermal_zone_device *tz,
true);
}
- err = control_temp - current_temp;
+ err = control_temp - tz->temperature;
err = int_to_frac(err);
/* Calculate the proportional term */
@@ -228,7 +226,7 @@ static u32 pid_controller(struct thermal_zone_device *tz,
if (err < int_to_frac(tz->tzp->integral_cutoff)) {
s64 i_next = i + mul_frac(tz->tzp->k_i, err);
- if (abs64(i_next) < max_power_frac) {
+ if (abs(i_next) < max_power_frac) {
i = i_next;
params->err_integral += err;
}
@@ -332,7 +330,6 @@ static void divvy_up_power(u32 *req_power, u32 *max_power, int num_actors,
}
static int allocate_power(struct thermal_zone_device *tz,
- int current_temp,
int control_temp)
{
struct thermal_instance *instance;
@@ -418,8 +415,7 @@ static int allocate_power(struct thermal_zone_device *tz,
i++;
}
- power_range = pid_controller(tz, current_temp, control_temp,
- max_allocatable_power);
+ power_range = pid_controller(tz, control_temp, max_allocatable_power);
divvy_up_power(weighted_req_power, max_power, num_actors,
total_weighted_req_power, power_range, granted_power,
@@ -444,8 +440,8 @@ static int allocate_power(struct thermal_zone_device *tz,
trace_thermal_power_allocator(tz, req_power, total_req_power,
granted_power, total_granted_power,
num_actors, power_range,
- max_allocatable_power, current_temp,
- control_temp - current_temp);
+ max_allocatable_power, tz->temperature,
+ control_temp - tz->temperature);
kfree(req_power);
unlock:
@@ -612,7 +608,7 @@ static void power_allocator_unbind(struct thermal_zone_device *tz)
static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
{
int ret;
- int switch_on_temp, control_temp, current_temp;
+ int switch_on_temp, control_temp;
struct power_allocator_params *params = tz->governor_data;
/*
@@ -622,15 +618,9 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
if (trip != params->trip_max_desired_temperature)
return 0;
- ret = thermal_zone_get_temp(tz, &current_temp);
- if (ret) {
- dev_warn(&tz->device, "Failed to get temperature: %d\n", ret);
- return ret;
- }
-
ret = tz->ops->get_trip_temp(tz, params->trip_switch_on,
&switch_on_temp);
- if (!ret && (current_temp < switch_on_temp)) {
+ if (!ret && (tz->temperature < switch_on_temp)) {
tz->passive = 0;
reset_pid_controller(params);
allow_maximum_power(tz);
@@ -648,7 +638,7 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
return ret;
}
- return allocate_power(tz, current_temp, control_temp);
+ return allocate_power(tz, control_temp);
}
static struct thermal_governor thermal_gov_power_allocator = {
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 5d4ae7d..13d01ed 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -361,6 +361,24 @@ static irqreturn_t rcar_thermal_irq(int irq, void *data)
/*
* platform functions
*/
+static int rcar_thermal_remove(struct platform_device *pdev)
+{
+ struct rcar_thermal_common *common = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ struct rcar_thermal_priv *priv;
+
+ rcar_thermal_for_each_priv(priv, common) {
+ if (rcar_has_irq_support(priv))
+ rcar_thermal_irq_disable(priv);
+ thermal_zone_device_unregister(priv->zone);
+ }
+
+ pm_runtime_put(dev);
+ pm_runtime_disable(dev);
+
+ return 0;
+}
+
static int rcar_thermal_probe(struct platform_device *pdev)
{
struct rcar_thermal_common *common;
@@ -377,6 +395,8 @@ static int rcar_thermal_probe(struct platform_device *pdev)
if (!common)
return -ENOMEM;
+ platform_set_drvdata(pdev, common);
+
INIT_LIST_HEAD(&common->head);
spin_lock_init(&common->lock);
common->dev = dev;
@@ -454,43 +474,16 @@ static int rcar_thermal_probe(struct platform_device *pdev)
rcar_thermal_common_write(common, ENR, enr_bits);
}
- platform_set_drvdata(pdev, common);
-
dev_info(dev, "%d sensor probed\n", i);
return 0;
error_unregister:
- rcar_thermal_for_each_priv(priv, common) {
- if (rcar_has_irq_support(priv))
- rcar_thermal_irq_disable(priv);
- thermal_zone_device_unregister(priv->zone);
- }
-
- pm_runtime_put(dev);
- pm_runtime_disable(dev);
+ rcar_thermal_remove(pdev);
return ret;
}
-static int rcar_thermal_remove(struct platform_device *pdev)
-{
- struct rcar_thermal_common *common = platform_get_drvdata(pdev);
- struct device *dev = &pdev->dev;
- struct rcar_thermal_priv *priv;
-
- rcar_thermal_for_each_priv(priv, common) {
- if (rcar_has_irq_support(priv))
- rcar_thermal_irq_disable(priv);
- thermal_zone_device_unregister(priv->zone);
- }
-
- pm_runtime_put(dev);
- pm_runtime_disable(dev);
-
- return 0;
-}
-
static const struct of_device_id rcar_thermal_dt_ids[] = {
{ .compatible = "renesas,rcar-thermal", },
{},
diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index c89ffb2..e845841 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -1,6 +1,9 @@
/*
* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
*
+ * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd
+ * Caesar Wang <wxt@rock-chips.com>
+ *
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
@@ -22,6 +25,7 @@
#include <linux/platform_device.h>
#include <linux/reset.h>
#include <linux/thermal.h>
+#include <linux/pinctrl/consumer.h>
/**
* If the temperature over a period of time High,
@@ -44,17 +48,50 @@ enum tshut_polarity {
};
/**
- * The system has three Temperature Sensors. channel 0 is reserved,
- * channel 1 is for CPU, and channel 2 is for GPU.
+ * The system has two Temperature Sensors.
+ * sensor0 is for CPU, and sensor1 is for GPU.
*/
enum sensor_id {
- SENSOR_CPU = 1,
+ SENSOR_CPU = 0,
SENSOR_GPU,
};
+/**
+* The conversion table has the adc value and temperature.
+* ADC_DECREMENT is the adc value decremnet.(e.g. v2_code_table)
+* ADC_INCREMNET is the adc value incremnet.(e.g. v3_code_table)
+*/
+enum adc_sort_mode {
+ ADC_DECREMENT = 0,
+ ADC_INCREMENT,
+};
+
+/**
+ * The max sensors is two in rockchip SoCs.
+ * Two sensors: CPU and GPU sensor.
+ */
+#define SOC_MAX_SENSORS 2
+
+struct chip_tsadc_table {
+ const struct tsadc_table *id;
+
+ /* the array table size*/
+ unsigned int length;
+
+ /* that analogic mask data */
+ u32 data_mask;
+
+ /* the sort mode is adc value that increment or decrement in table */
+ enum adc_sort_mode mode;
+};
+
struct rockchip_tsadc_chip {
+ /* The sensor id of chip correspond to the ADC channel */
+ int chn_id[SOC_MAX_SENSORS];
+ int chn_num;
+
/* The hardware-controlled tshut property */
- long tshut_temp;
+ int tshut_temp;
enum tshut_mode tshut_mode;
enum tshut_polarity tshut_polarity;
@@ -64,37 +101,40 @@ struct rockchip_tsadc_chip {
void (*control)(void __iomem *reg, bool on);
/* Per-sensor methods */
- int (*get_temp)(int chn, void __iomem *reg, int *temp);
- void (*set_tshut_temp)(int chn, void __iomem *reg, long temp);
+ int (*get_temp)(struct chip_tsadc_table table,
+ int chn, void __iomem *reg, int *temp);
+ void (*set_tshut_temp)(struct chip_tsadc_table table,
+ int chn, void __iomem *reg, int temp);
void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
+
+ /* Per-table methods */
+ struct chip_tsadc_table table;
};
struct rockchip_thermal_sensor {
struct rockchip_thermal_data *thermal;
struct thermal_zone_device *tzd;
- enum sensor_id id;
+ int id;
};
-#define NUM_SENSORS 2 /* Ignore unused sensor 0 */
-
struct rockchip_thermal_data {
const struct rockchip_tsadc_chip *chip;
struct platform_device *pdev;
struct reset_control *reset;
- struct rockchip_thermal_sensor sensors[NUM_SENSORS];
+ struct rockchip_thermal_sensor sensors[SOC_MAX_SENSORS];
struct clk *clk;
struct clk *pclk;
void __iomem *regs;
- long tshut_temp;
+ int tshut_temp;
enum tshut_mode tshut_mode;
enum tshut_polarity tshut_polarity;
};
-/* TSADC V2 Sensor info define: */
+/* TSADC Sensor info define: */
#define TSADCV2_AUTO_CON 0x04
#define TSADCV2_INT_EN 0x08
#define TSADCV2_INT_PD 0x0c
@@ -106,26 +146,26 @@ struct rockchip_thermal_data {
#define TSADCV2_AUTO_PERIOD_HT 0x6c
#define TSADCV2_AUTO_EN BIT(0)
-#define TSADCV2_AUTO_DISABLE ~BIT(0)
#define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn))
#define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8)
-#define TSADCV2_AUTO_TSHUT_POLARITY_LOW ~BIT(8)
#define TSADCV2_INT_SRC_EN(chn) BIT(chn)
#define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn))
#define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn))
-#define TSADCV2_INT_PD_CLEAR ~BIT(8)
+#define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8)
#define TSADCV2_DATA_MASK 0xfff
+#define TSADCV3_DATA_MASK 0x3ff
+
#define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4
#define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4
#define TSADCV2_AUTO_PERIOD_TIME 250 /* msec */
#define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* msec */
struct tsadc_table {
- unsigned long code;
- long temp;
+ u32 code;
+ int temp;
};
static const struct tsadc_table v2_code_table[] = {
@@ -164,24 +204,63 @@ static const struct tsadc_table v2_code_table[] = {
{3452, 115000},
{3437, 120000},
{3421, 125000},
- {0, 125000},
};
-static u32 rk_tsadcv2_temp_to_code(long temp)
+static const struct tsadc_table v3_code_table[] = {
+ {0, -40000},
+ {106, -40000},
+ {108, -35000},
+ {110, -30000},
+ {112, -25000},
+ {114, -20000},
+ {116, -15000},
+ {118, -10000},
+ {120, -5000},
+ {122, 0},
+ {124, 5000},
+ {126, 10000},
+ {128, 15000},
+ {130, 20000},
+ {132, 25000},
+ {134, 30000},
+ {136, 35000},
+ {138, 40000},
+ {140, 45000},
+ {142, 50000},
+ {144, 55000},
+ {146, 60000},
+ {148, 65000},
+ {150, 70000},
+ {152, 75000},
+ {154, 80000},
+ {156, 85000},
+ {158, 90000},
+ {160, 95000},
+ {162, 100000},
+ {163, 105000},
+ {165, 110000},
+ {167, 115000},
+ {169, 120000},
+ {171, 125000},
+ {TSADCV3_DATA_MASK, 125000},
+};
+
+static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
+ int temp)
{
int high, low, mid;
low = 0;
- high = ARRAY_SIZE(v2_code_table) - 1;
+ high = table.length - 1;
mid = (high + low) / 2;
- if (temp < v2_code_table[low].temp || temp > v2_code_table[high].temp)
+ if (temp < table.id[low].temp || temp > table.id[high].temp)
return 0;
while (low <= high) {
- if (temp == v2_code_table[mid].temp)
- return v2_code_table[mid].code;
- else if (temp < v2_code_table[mid].temp)
+ if (temp == table.id[mid].temp)
+ return table.id[mid].code;
+ else if (temp < table.id[mid].temp)
high = mid - 1;
else
low = mid + 1;
@@ -191,27 +270,54 @@ static u32 rk_tsadcv2_temp_to_code(long temp)
return 0;
}
-static int rk_tsadcv2_code_to_temp(u32 code)
+static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
+ int *temp)
{
- unsigned int low = 0;
- unsigned int high = ARRAY_SIZE(v2_code_table) - 1;
+ unsigned int low = 1;
+ unsigned int high = table.length - 1;
unsigned int mid = (low + high) / 2;
unsigned int num;
unsigned long denom;
- /* Invalid code, return -EAGAIN */
- if (code > TSADCV2_DATA_MASK)
- return -EAGAIN;
-
- while (low <= high && mid) {
- if (code >= v2_code_table[mid].code &&
- code < v2_code_table[mid - 1].code)
- break;
- else if (code < v2_code_table[mid].code)
- low = mid + 1;
- else
- high = mid - 1;
- mid = (low + high) / 2;
+ WARN_ON(table.length < 2);
+
+ switch (table.mode) {
+ case ADC_DECREMENT:
+ code &= table.data_mask;
+ if (code < table.id[high].code)
+ return -EAGAIN; /* Incorrect reading */
+
+ while (low <= high) {
+ if (code >= table.id[mid].code &&
+ code < table.id[mid - 1].code)
+ break;
+ else if (code < table.id[mid].code)
+ low = mid + 1;
+ else
+ high = mid - 1;
+
+ mid = (low + high) / 2;
+ }
+ break;
+ case ADC_INCREMENT:
+ code &= table.data_mask;
+ if (code < table.id[low].code)
+ return -EAGAIN; /* Incorrect reading */
+
+ while (low <= high) {
+ if (code >= table.id[mid - 1].code &&
+ code < table.id[mid].code)
+ break;
+ else if (code > table.id[mid].code)
+ low = mid + 1;
+ else
+ high = mid - 1;
+
+ mid = (low + high) / 2;
+ }
+ break;
+ default:
+ pr_err("Invalid the conversion table\n");
}
/*
@@ -220,31 +326,37 @@ static int rk_tsadcv2_code_to_temp(u32 code)
* temperature between 2 table entries is linear and interpolate
* to produce less granular result.
*/
- num = v2_code_table[mid].temp - v2_code_table[mid - 1].temp;
- num *= v2_code_table[mid - 1].code - code;
- denom = v2_code_table[mid - 1].code - v2_code_table[mid].code;
- return v2_code_table[mid - 1].temp + (num / denom);
+ num = table.id[mid].temp - v2_code_table[mid - 1].temp;
+ num *= abs(table.id[mid - 1].code - code);
+ denom = abs(table.id[mid - 1].code - table.id[mid].code);
+ *temp = table.id[mid - 1].temp + (num / denom);
+
+ return 0;
}
/**
- * rk_tsadcv2_initialize - initialize TASDC Controller
- * (1) Set TSADCV2_AUTO_PERIOD, configure the interleave between
- * every two accessing of TSADC in normal operation.
- * (2) Set TSADCV2_AUTO_PERIOD_HT, configure the interleave between
- * every two accessing of TSADC after the temperature is higher
- * than COM_SHUT or COM_INT.
- * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE,
- * if the temperature is higher than COMP_INT or COMP_SHUT for
- * "debounce" times, TSADC controller will generate interrupt or TSHUT.
+ * rk_tsadcv2_initialize - initialize TASDC Controller.
+ *
+ * (1) Set TSADC_V2_AUTO_PERIOD:
+ * Configure the interleave between every two accessing of
+ * TSADC in normal operation.
+ *
+ * (2) Set TSADCV2_AUTO_PERIOD_HT:
+ * Configure the interleave between every two accessing of
+ * TSADC after the temperature is higher than COM_SHUT or COM_INT.
+ *
+ * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE:
+ * If the temperature is higher than COMP_INT or COMP_SHUT for
+ * "debounce" times, TSADC controller will generate interrupt or TSHUT.
*/
static void rk_tsadcv2_initialize(void __iomem *regs,
enum tshut_polarity tshut_polarity)
{
if (tshut_polarity == TSHUT_HIGH_ACTIVE)
- writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_HIGH),
+ writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
regs + TSADCV2_AUTO_CON);
else
- writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_LOW),
+ writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
regs + TSADCV2_AUTO_CON);
writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD);
@@ -261,7 +373,7 @@ static void rk_tsadcv2_irq_ack(void __iomem *regs)
u32 val;
val = readl_relaxed(regs + TSADCV2_INT_PD);
- writel_relaxed(val & TSADCV2_INT_PD_CLEAR, regs + TSADCV2_INT_PD);
+ writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
}
static void rk_tsadcv2_control(void __iomem *regs, bool enable)
@@ -277,25 +389,22 @@ static void rk_tsadcv2_control(void __iomem *regs, bool enable)
writel_relaxed(val, regs + TSADCV2_AUTO_CON);
}
-static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, int *temp)
+static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
+ int chn, void __iomem *regs, int *temp)
{
u32 val;
- /* the A/D value of the channel last conversion need some time */
val = readl_relaxed(regs + TSADCV2_DATA(chn));
- if (val == 0)
- return -EAGAIN;
- *temp = rk_tsadcv2_code_to_temp(val);
-
- return 0;
+ return rk_tsadcv2_code_to_temp(table, val, temp);
}
-static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp)
+static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
+ int chn, void __iomem *regs, int temp)
{
u32 tshut_value, val;
- tshut_value = rk_tsadcv2_temp_to_code(temp);
+ tshut_value = rk_tsadcv2_temp_to_code(table, temp);
writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
/* TSHUT will be valid */
@@ -321,6 +430,10 @@ static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
}
static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
+ .chn_id[SENSOR_CPU] = 1, /* cpu sensor is channel 1 */
+ .chn_id[SENSOR_GPU] = 2, /* gpu sensor is channel 2 */
+ .chn_num = 2, /* two channels for tsadc */
+
.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
.tshut_temp = 95000,
@@ -331,6 +444,37 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
.get_temp = rk_tsadcv2_get_temp,
.set_tshut_temp = rk_tsadcv2_tshut_temp,
.set_tshut_mode = rk_tsadcv2_tshut_mode,
+
+ .table = {
+ .id = v2_code_table,
+ .length = ARRAY_SIZE(v2_code_table),
+ .data_mask = TSADCV2_DATA_MASK,
+ .mode = ADC_DECREMENT,
+ },
+};
+
+static const struct rockchip_tsadc_chip rk3368_tsadc_data = {
+ .chn_id[SENSOR_CPU] = 0, /* cpu sensor is channel 0 */
+ .chn_id[SENSOR_GPU] = 1, /* gpu sensor is channel 1 */
+ .chn_num = 2, /* two channels for tsadc */
+
+ .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
+ .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
+ .tshut_temp = 95000,
+
+ .initialize = rk_tsadcv2_initialize,
+ .irq_ack = rk_tsadcv2_irq_ack,
+ .control = rk_tsadcv2_control,
+ .get_temp = rk_tsadcv2_get_temp,
+ .set_tshut_temp = rk_tsadcv2_tshut_temp,
+ .set_tshut_mode = rk_tsadcv2_tshut_mode,
+
+ .table = {
+ .id = v3_code_table,
+ .length = ARRAY_SIZE(v3_code_table),
+ .data_mask = TSADCV3_DATA_MASK,
+ .mode = ADC_INCREMENT,
+ },
};
static const struct of_device_id of_rockchip_thermal_match[] = {
@@ -338,6 +482,10 @@ static const struct of_device_id of_rockchip_thermal_match[] = {
.compatible = "rockchip,rk3288-tsadc",
.data = (void *)&rk3288_tsadc_data,
},
+ {
+ .compatible = "rockchip,rk3368-tsadc",
+ .data = (void *)&rk3368_tsadc_data,
+ },
{ /* end */ },
};
MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);
@@ -360,7 +508,7 @@ static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
thermal->chip->irq_ack(thermal->regs);
- for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
+ for (i = 0; i < thermal->chip->chn_num; i++)
thermal_zone_device_update(thermal->sensors[i].tzd);
return IRQ_HANDLED;
@@ -373,7 +521,8 @@ static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip;
int retval;
- retval = tsadc->get_temp(sensor->id, thermal->regs, out_temp);
+ retval = tsadc->get_temp(tsadc->table,
+ sensor->id, thermal->regs, out_temp);
dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n",
sensor->id, *out_temp, retval);
@@ -392,7 +541,7 @@ static int rockchip_configure_from_dt(struct device *dev,
if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) {
dev_warn(dev,
- "Missing tshut temp property, using default %ld\n",
+ "Missing tshut temp property, using default %d\n",
thermal->chip->tshut_temp);
thermal->tshut_temp = thermal->chip->tshut_temp;
} else {
@@ -400,7 +549,7 @@ static int rockchip_configure_from_dt(struct device *dev,
}
if (thermal->tshut_temp > INT_MAX) {
- dev_err(dev, "Invalid tshut temperature specified: %ld\n",
+ dev_err(dev, "Invalid tshut temperature specified: %d\n",
thermal->tshut_temp);
return -ERANGE;
}
@@ -445,13 +594,14 @@ static int
rockchip_thermal_register_sensor(struct platform_device *pdev,
struct rockchip_thermal_data *thermal,
struct rockchip_thermal_sensor *sensor,
- enum sensor_id id)
+ int id)
{
const struct rockchip_tsadc_chip *tsadc = thermal->chip;
int error;
tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
- tsadc->set_tshut_temp(id, thermal->regs, thermal->tshut_temp);
+ tsadc->set_tshut_temp(tsadc->table, id, thermal->regs,
+ thermal->tshut_temp);
sensor->thermal = thermal;
sensor->id = id;
@@ -484,7 +634,7 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
const struct of_device_id *match;
struct resource *res;
int irq;
- int i;
+ int i, j;
int error;
match = of_match_node(of_rockchip_thermal_match, np);
@@ -559,22 +709,19 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
- error = rockchip_thermal_register_sensor(pdev, thermal,
- &thermal->sensors[0],
- SENSOR_CPU);
- if (error) {
- dev_err(&pdev->dev,
- "failed to register CPU thermal sensor: %d\n", error);
- goto err_disable_pclk;
- }
-
- error = rockchip_thermal_register_sensor(pdev, thermal,
- &thermal->sensors[1],
- SENSOR_GPU);
- if (error) {
- dev_err(&pdev->dev,
- "failed to register GPU thermal sensor: %d\n", error);
- goto err_unregister_cpu_sensor;
+ for (i = 0; i < thermal->chip->chn_num; i++) {
+ error = rockchip_thermal_register_sensor(pdev, thermal,
+ &thermal->sensors[i],
+ thermal->chip->chn_id[i]);
+ if (error) {
+ dev_err(&pdev->dev,
+ "failed to register sensor[%d] : error = %d\n",
+ i, error);
+ for (j = 0; j < i; j++)
+ thermal_zone_of_sensor_unregister(&pdev->dev,
+ thermal->sensors[j].tzd);
+ goto err_disable_pclk;
+ }
}
error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
@@ -584,22 +731,23 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
if (error) {
dev_err(&pdev->dev,
"failed to request tsadc irq: %d\n", error);
- goto err_unregister_gpu_sensor;
+ goto err_unregister_sensor;
}
thermal->chip->control(thermal->regs, true);
- for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
+ for (i = 0; i < thermal->chip->chn_num; i++)
rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
platform_set_drvdata(pdev, thermal);
return 0;
-err_unregister_gpu_sensor:
- thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[1].tzd);
-err_unregister_cpu_sensor:
- thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[0].tzd);
+err_unregister_sensor:
+ while (i--)
+ thermal_zone_of_sensor_unregister(&pdev->dev,
+ thermal->sensors[i].tzd);
+
err_disable_pclk:
clk_disable_unprepare(thermal->pclk);
err_disable_clk:
@@ -613,7 +761,7 @@ static int rockchip_thermal_remove(struct platform_device *pdev)
struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
int i;
- for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) {
+ for (i = 0; i < thermal->chip->chn_num; i++) {
struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
rockchip_thermal_toggle_sensor(sensor, false);
@@ -634,7 +782,7 @@ static int __maybe_unused rockchip_thermal_suspend(struct device *dev)
struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev);
int i;
- for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
+ for (i = 0; i < thermal->chip->chn_num; i++)
rockchip_thermal_toggle_sensor(&thermal->sensors[i], false);
thermal->chip->control(thermal->regs, false);
@@ -642,6 +790,8 @@ static int __maybe_unused rockchip_thermal_suspend(struct device *dev)
clk_disable(thermal->pclk);
clk_disable(thermal->clk);
+ pinctrl_pm_select_sleep_state(dev);
+
return 0;
}
@@ -664,20 +814,23 @@ static int __maybe_unused rockchip_thermal_resume(struct device *dev)
thermal->chip->initialize(thermal->regs, thermal->tshut_polarity);
- for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) {
- enum sensor_id id = thermal->sensors[i].id;
+ for (i = 0; i < thermal->chip->chn_num; i++) {
+ int id = thermal->sensors[i].id;
thermal->chip->set_tshut_mode(id, thermal->regs,
thermal->tshut_mode);
- thermal->chip->set_tshut_temp(id, thermal->regs,
+ thermal->chip->set_tshut_temp(thermal->chip->table,
+ id, thermal->regs,
thermal->tshut_temp);
}
thermal->chip->control(thermal->regs, true);
- for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++)
+ for (i = 0; i < thermal->chip->chn_num; i++)
rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
+ pinctrl_pm_select_default_state(dev);
+
return 0;
}
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index ca920b0..fa61eff 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -548,7 +548,7 @@ static int exynos5433_tmu_initialize(struct platform_device *pdev)
default:
pdata->cal_type = TYPE_ONE_POINT_TRIMMING;
break;
- };
+ }
dev_info(&pdev->dev, "Calibration type is %d-point calibration\n",
cal_type ? 2 : 1);
@@ -608,7 +608,7 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
{
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
unsigned int trim_info = 0, con, rising_threshold;
- int ret = 0, threshold_code;
+ int threshold_code;
int crit_temp = 0;
/*
@@ -651,7 +651,8 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
/* Clear the PMIN in the common TMU register */
if (!data->id)
writel(0, data->base_second + EXYNOS5440_TMU_PMIN);
- return ret;
+
+ return 0;
}
static int exynos7_tmu_initialize(struct platform_device *pdev)
@@ -1168,27 +1169,10 @@ static int exynos_map_dt_data(struct platform_device *pdev)
struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct exynos_tmu_platform_data *pdata;
struct resource res;
- int ret;
if (!data || !pdev->dev.of_node)
return -ENODEV;
- /*
- * Try enabling the regulator if found
- * TODO: Add regulator as an SOC feature, so that regulator enable
- * is a compulsory call.
- */
- data->regulator = devm_regulator_get(&pdev->dev, "vtmu");
- if (!IS_ERR(data->regulator)) {
- ret = regulator_enable(data->regulator);
- if (ret) {
- dev_err(&pdev->dev, "failed to enable vtmu\n");
- return ret;
- }
- } else {
- dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
- }
-
data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
if (data->id < 0)
data->id = 0;
@@ -1306,12 +1290,22 @@ static int exynos_tmu_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
mutex_init(&data->lock);
- data->tzd = thermal_zone_of_sensor_register(&pdev->dev, 0, data,
- &exynos_sensor_ops);
- if (IS_ERR(data->tzd)) {
- pr_err("thermal: tz: %p ERROR\n", data->tzd);
- return PTR_ERR(data->tzd);
+ /*
+ * Try enabling the regulator if found
+ * TODO: Add regulator as an SOC feature, so that regulator enable
+ * is a compulsory call.
+ */
+ data->regulator = devm_regulator_get(&pdev->dev, "vtmu");
+ if (!IS_ERR(data->regulator)) {
+ ret = regulator_enable(data->regulator);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to enable vtmu\n");
+ return ret;
+ }
+ } else {
+ dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
}
+
ret = exynos_map_dt_data(pdev);
if (ret)
goto err_sensor;
@@ -1363,23 +1357,38 @@ static int exynos_tmu_probe(struct platform_device *pdev)
break;
default:
break;
- };
+ }
+
+ /*
+ * data->tzd must be registered before calling exynos_tmu_initialize(),
+ * requesting irq and calling exynos_tmu_control().
+ */
+ data->tzd = thermal_zone_of_sensor_register(&pdev->dev, 0, data,
+ &exynos_sensor_ops);
+ if (IS_ERR(data->tzd)) {
+ ret = PTR_ERR(data->tzd);
+ dev_err(&pdev->dev, "Failed to register sensor: %d\n", ret);
+ goto err_sclk;
+ }
ret = exynos_tmu_initialize(pdev);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize TMU\n");
- goto err_sclk;
+ goto err_thermal;
}
ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
IRQF_TRIGGER_RISING | IRQF_SHARED, dev_name(&pdev->dev), data);
if (ret) {
dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq);
- goto err_sclk;
+ goto err_thermal;
}
exynos_tmu_control(pdev, true);
return 0;
+
+err_thermal:
+ thermal_zone_of_sensor_unregister(&pdev->dev, data->tzd);
err_sclk:
clk_disable_unprepare(data->sclk);
err_clk:
@@ -1388,9 +1397,8 @@ err_clk_sec:
if (!IS_ERR(data->clk_sec))
clk_unprepare(data->clk_sec);
err_sensor:
- if (!IS_ERR_OR_NULL(data->regulator))
+ if (!IS_ERR(data->regulator))
regulator_disable(data->regulator);
- thermal_zone_of_sensor_unregister(&pdev->dev, data->tzd);
return ret;
}
diff --git a/drivers/thermal/ti-soc-thermal/Kconfig b/drivers/thermal/ti-soc-thermal/Kconfig
index cb6686f..ea8283f 100644
--- a/drivers/thermal/ti-soc-thermal/Kconfig
+++ b/drivers/thermal/ti-soc-thermal/Kconfig
@@ -19,6 +19,21 @@ config TI_THERMAL
This includes trip points definitions, extrapolation rules and
CPU cooling device bindings.
+config OMAP3_THERMAL
+ bool "Texas Instruments OMAP3 thermal support"
+ depends on TI_SOC_THERMAL
+ depends on ARCH_OMAP3 || COMPILE_TEST
+ help
+ If you say yes here you get thermal support for the Texas Instruments
+ OMAP3 SoC family. The current chips supported are:
+ - OMAP3430
+
+ OMAP3 chips normally don't need thermal management, and sensors in
+ this generation are not accurate, nor they are very close to
+ the important hotspots.
+
+ Say 'N' here.
+
config OMAP4_THERMAL
bool "Texas Instruments OMAP4 thermal support"
depends on TI_SOC_THERMAL
diff --git a/drivers/thermal/ti-soc-thermal/Makefile b/drivers/thermal/ti-soc-thermal/Makefile
index 1226b24..0f89bdf 100644
--- a/drivers/thermal/ti-soc-thermal/Makefile
+++ b/drivers/thermal/ti-soc-thermal/Makefile
@@ -2,5 +2,6 @@ obj-$(CONFIG_TI_SOC_THERMAL) += ti-soc-thermal.o
ti-soc-thermal-y := ti-bandgap.o
ti-soc-thermal-$(CONFIG_TI_THERMAL) += ti-thermal-common.o
ti-soc-thermal-$(CONFIG_DRA752_THERMAL) += dra752-thermal-data.o
+ti-soc-thermal-$(CONFIG_OMAP3_THERMAL) += omap3-thermal-data.o
ti-soc-thermal-$(CONFIG_OMAP4_THERMAL) += omap4-thermal-data.o
ti-soc-thermal-$(CONFIG_OMAP5_THERMAL) += omap5-thermal-data.o
diff --git a/drivers/thermal/ti-soc-thermal/omap3-thermal-data.c b/drivers/thermal/ti-soc-thermal/omap3-thermal-data.c
new file mode 100644
index 0000000..3ee3434
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/omap3-thermal-data.c
@@ -0,0 +1,176 @@
+/*
+ * OMAP3 thermal driver.
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Inc.
+ * Copyright (C) 2014 Pavel Machek <pavel@ucw.cz>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Note
+ * http://www.ti.com/lit/er/sprz278f/sprz278f.pdf "Advisory
+ * 3.1.1.186 MMC OCP Clock Not Gated When Thermal Sensor Is Used"
+ *
+ * Also TI says:
+ * Just be careful when you try to make thermal policy like decisions
+ * based on this sensor. Placement of the sensor w.r.t the actual logic
+ * generating heat has to be a factor as well. If you are just looking
+ * for an approximation temperature (thermometerish kind), you might be
+ * ok with this. I am not sure we'd find any TI data around this.. just a
+ * heads up.
+ */
+
+#include "ti-thermal.h"
+#include "ti-bandgap.h"
+
+/*
+ * OMAP34XX has one instance of thermal sensor for MPU
+ * need to describe the individual bit fields
+ */
+static struct temp_sensor_registers
+omap34xx_mpu_temp_sensor_registers = {
+ .temp_sensor_ctrl = 0,
+ .bgap_soc_mask = BIT(8),
+ .bgap_eocz_mask = BIT(7),
+ .bgap_dtemp_mask = 0x7f,
+
+ .bgap_mode_ctrl = 0,
+ .mode_ctrl_mask = BIT(9),
+};
+
+/* Thresholds and limits for OMAP34XX MPU temperature sensor */
+static struct temp_sensor_data omap34xx_mpu_temp_sensor_data = {
+ .min_freq = 32768,
+ .max_freq = 32768,
+ .max_temp = 125000,
+ .min_temp = -40000,
+ .hyst_val = 5000,
+};
+
+/*
+ * Temperature values in milli degree celsius
+ */
+static const int
+omap34xx_adc_to_temp[128] = {
+ -40000, -40000, -40000, -40000, -40000, -39000, -38000, -36000,
+ -34000, -32000, -31000, -29000, -28000, -26000, -25000, -24000,
+ -22000, -21000, -19000, -18000, -17000, -15000, -14000, -12000,
+ -11000, -9000, -8000, -7000, -5000, -4000, -2000, -1000, 0000,
+ 1000, 3000, 4000, 5000, 7000, 8000, 10000, 11000, 13000, 14000,
+ 15000, 17000, 18000, 20000, 21000, 22000, 24000, 25000, 27000,
+ 28000, 30000, 31000, 32000, 34000, 35000, 37000, 38000, 39000,
+ 41000, 42000, 44000, 45000, 47000, 48000, 49000, 51000, 52000,
+ 53000, 55000, 56000, 58000, 59000, 60000, 62000, 63000, 65000,
+ 66000, 67000, 69000, 70000, 72000, 73000, 74000, 76000, 77000,
+ 79000, 80000, 81000, 83000, 84000, 85000, 87000, 88000, 89000,
+ 91000, 92000, 94000, 95000, 96000, 98000, 99000, 100000,
+ 102000, 103000, 105000, 106000, 107000, 109000, 110000, 111000,
+ 113000, 114000, 116000, 117000, 118000, 120000, 121000, 122000,
+ 124000, 124000, 125000, 125000, 125000, 125000, 125000
+};
+
+/* OMAP34XX data */
+const struct ti_bandgap_data omap34xx_data = {
+ .features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
+ .fclock_name = "ts_fck",
+ .div_ck_name = "ts_fck",
+ .conv_table = omap34xx_adc_to_temp,
+ .adc_start_val = 0,
+ .adc_end_val = 127,
+ .expose_sensor = ti_thermal_expose_sensor,
+ .remove_sensor = ti_thermal_remove_sensor,
+
+ .sensors = {
+ {
+ .registers = &omap34xx_mpu_temp_sensor_registers,
+ .ts_data = &omap34xx_mpu_temp_sensor_data,
+ .domain = "cpu",
+ .slope = 0,
+ .constant = 20000,
+ .slope_pcb = 0,
+ .constant_pcb = 20000,
+ .register_cooling = NULL,
+ .unregister_cooling = NULL,
+ },
+ },
+ .sensor_count = 1,
+};
+
+/*
+ * OMAP36XX has one instance of thermal sensor for MPU
+ * need to describe the individual bit fields
+ */
+static struct temp_sensor_registers
+omap36xx_mpu_temp_sensor_registers = {
+ .temp_sensor_ctrl = 0,
+ .bgap_soc_mask = BIT(9),
+ .bgap_eocz_mask = BIT(8),
+ .bgap_dtemp_mask = 0xFF,
+
+ .bgap_mode_ctrl = 0,
+ .mode_ctrl_mask = BIT(10),
+};
+
+/* Thresholds and limits for OMAP36XX MPU temperature sensor */
+static struct temp_sensor_data omap36xx_mpu_temp_sensor_data = {
+ .min_freq = 32768,
+ .max_freq = 32768,
+ .max_temp = 125000,
+ .min_temp = -40000,
+ .hyst_val = 5000,
+};
+
+/*
+ * Temperature values in milli degree celsius
+ */
+static const int
+omap36xx_adc_to_temp[128] = {
+ -40000, -40000, -40000, -40000, -40000, -40000, -40000, -40000,
+ -40000, -40000, -40000, -40000, -40000, -38000, -35000, -34000,
+ -32000, -30000, -28000, -26000, -24000, -22000, -20000, -18500,
+ -17000, -15000, -13500, -12000, -10000, -8000, -6500, -5000, -3500,
+ -1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 12000, 13500,
+ 15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 30000,
+ 32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000,
+ 47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000,
+ 62000, 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000,
+ 78500, 80000, 82000, 83500, 85000, 87000, 88500, 90000, 92000,
+ 93500, 95000, 97000, 98500, 100000, 102000, 103500, 105000, 107000,
+ 109000, 111000, 113000, 115000, 117000, 118500, 120000, 122000,
+ 123500, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
+ 125000, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
+ 125000, 125000, 125000, 125000, 125000, 125000, 125000
+};
+
+/* OMAP36XX data */
+const struct ti_bandgap_data omap36xx_data = {
+ .features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
+ .fclock_name = "ts_fck",
+ .div_ck_name = "ts_fck",
+ .conv_table = omap36xx_adc_to_temp,
+ .adc_start_val = 0,
+ .adc_end_val = 127,
+ .expose_sensor = ti_thermal_expose_sensor,
+ .remove_sensor = ti_thermal_remove_sensor,
+
+ .sensors = {
+ {
+ .registers = &omap36xx_mpu_temp_sensor_registers,
+ .ts_data = &omap36xx_mpu_temp_sensor_data,
+ .domain = "cpu",
+ .slope = 0,
+ .constant = 20000,
+ .slope_pcb = 0,
+ .constant_pcb = 20000,
+ .register_cooling = NULL,
+ .unregister_cooling = NULL,
+ },
+ },
+ .sensor_count = 1,
+};
diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
index 10c47c0..1e34a1e 100644
--- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
@@ -1274,6 +1274,10 @@ int ti_bandgap_probe(struct platform_device *pdev)
}
bgp->dev = &pdev->dev;
+ if (TI_BANDGAP_HAS(bgp, UNRELIABLE))
+ dev_warn(&pdev->dev,
+ "This OMAP thermal sensor is unreliable. You've been warned\n");
+
if (TI_BANDGAP_HAS(bgp, TSHUT)) {
ret = ti_bandgap_tshut_init(bgp, pdev);
if (ret) {
@@ -1579,6 +1583,16 @@ static SIMPLE_DEV_PM_OPS(ti_bandgap_dev_pm_ops, ti_bandgap_suspend,
#endif
static const struct of_device_id of_ti_bandgap_match[] = {
+#ifdef CONFIG_OMAP3_THERMAL
+ {
+ .compatible = "ti,omap34xx-bandgap",
+ .data = (void *)&omap34xx_data,
+ },
+ {
+ .compatible = "ti,omap36xx-bandgap",
+ .data = (void *)&omap36xx_data,
+ },
+#endif
#ifdef CONFIG_OMAP4_THERMAL
{
.compatible = "ti,omap4430-bandgap",
diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.h b/drivers/thermal/ti-soc-thermal/ti-bandgap.h
index 0c52f7a..fe0adb8 100644
--- a/drivers/thermal/ti-soc-thermal/ti-bandgap.h
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.h
@@ -322,6 +322,8 @@ struct ti_temp_sensor {
* has Errata 814
* TI_BANDGAP_FEATURE_ERRATA_813 - used to workaorund when the bandgap device
* has Errata 813
+ * TI_BANDGAP_FEATURE_UNRELIABLE - used when the sensor readings are too
+ * inaccurate.
* TI_BANDGAP_HAS(b, f) - macro to check if a bandgap device is capable of a
* specific feature (above) or not. Return non-zero, if yes.
*/
@@ -337,6 +339,7 @@ struct ti_temp_sensor {
#define TI_BANDGAP_FEATURE_HISTORY_BUFFER BIT(9)
#define TI_BANDGAP_FEATURE_ERRATA_814 BIT(10)
#define TI_BANDGAP_FEATURE_ERRATA_813 BIT(11)
+#define TI_BANDGAP_FEATURE_UNRELIABLE BIT(12)
#define TI_BANDGAP_HAS(b, f) \
((b)->conf->features & TI_BANDGAP_FEATURE_ ## f)
@@ -390,6 +393,14 @@ int ti_bandgap_set_sensor_data(struct ti_bandgap *bgp, int id, void *data);
void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id);
int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend);
+#ifdef CONFIG_OMAP3_THERMAL
+extern const struct ti_bandgap_data omap34xx_data;
+extern const struct ti_bandgap_data omap36xx_data;
+#else
+#define omap34xx_data NULL
+#define omap36xx_data NULL
+#endif
+
#ifdef CONFIG_OMAP4_THERMAL
extern const struct ti_bandgap_data omap4430_data;
extern const struct ti_bandgap_data omap4460_data;
generated by cgit v0.10.2 at 2024-11-16 09:13:05 (GMT)