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-rw-r--r--drivers/thermal/hisi_thermal.c714
1 files changed, 467 insertions, 247 deletions
diff --git a/drivers/thermal/hisi_thermal.c b/drivers/thermal/hisi_thermal.c
index 9c3ce341eb97..4307161533a7 100644
--- a/drivers/thermal/hisi_thermal.c
+++ b/drivers/thermal/hisi_thermal.c
@@ -1,262 +1,490 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
- * Hisilicon thermal sensor driver
+ * HiSilicon thermal sensor driver
*
- * Copyright (c) 2014-2015 Hisilicon Limited.
+ * Copyright (c) 2014-2015 HiSilicon Limited.
* Copyright (c) 2014-2015 Linaro Limited.
*
* Xinwei Kong <kong.kongxinwei@hisilicon.com>
* Leo Yan <leo.yan@linaro.org>
- *
- * 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.
*/
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/io.h>
-
-#include "thermal_core.h"
-
-#define TEMP0_TH (0x4)
-#define TEMP0_RST_TH (0x8)
-#define TEMP0_CFG (0xC)
-#define TEMP0_EN (0x10)
-#define TEMP0_INT_EN (0x14)
-#define TEMP0_INT_CLR (0x18)
-#define TEMP0_RST_MSK (0x1C)
-#define TEMP0_VALUE (0x28)
-
-#define HISI_TEMP_BASE (-60)
-#define HISI_TEMP_RESET (100000)
-
-#define HISI_MAX_SENSORS 4
+#include <linux/thermal.h>
+
+#define HI6220_TEMP0_LAG (0x0)
+#define HI6220_TEMP0_TH (0x4)
+#define HI6220_TEMP0_RST_TH (0x8)
+#define HI6220_TEMP0_CFG (0xC)
+#define HI6220_TEMP0_CFG_SS_MSK (0xF000)
+#define HI6220_TEMP0_CFG_HDAK_MSK (0x30)
+#define HI6220_TEMP0_EN (0x10)
+#define HI6220_TEMP0_INT_EN (0x14)
+#define HI6220_TEMP0_INT_CLR (0x18)
+#define HI6220_TEMP0_RST_MSK (0x1C)
+#define HI6220_TEMP0_VALUE (0x28)
+
+#define HI3660_OFFSET(chan) ((chan) * 0x40)
+#define HI3660_TEMP(chan) (HI3660_OFFSET(chan) + 0x1C)
+#define HI3660_TH(chan) (HI3660_OFFSET(chan) + 0x20)
+#define HI3660_LAG(chan) (HI3660_OFFSET(chan) + 0x28)
+#define HI3660_INT_EN(chan) (HI3660_OFFSET(chan) + 0x2C)
+#define HI3660_INT_CLR(chan) (HI3660_OFFSET(chan) + 0x30)
+
+#define HI6220_TEMP_BASE (-60000)
+#define HI6220_TEMP_RESET (100000)
+#define HI6220_TEMP_STEP (785)
+#define HI6220_TEMP_LAG (3500)
+
+#define HI3660_TEMP_BASE (-63780)
+#define HI3660_TEMP_STEP (205)
+#define HI3660_TEMP_LAG (4000)
+
+#define HI6220_CLUSTER0_SENSOR 2
+#define HI6220_CLUSTER1_SENSOR 1
+
+#define HI3660_LITTLE_SENSOR 0
+#define HI3660_BIG_SENSOR 1
+#define HI3660_G3D_SENSOR 2
+#define HI3660_MODEM_SENSOR 3
+
+struct hisi_thermal_data;
struct hisi_thermal_sensor {
- struct hisi_thermal_data *thermal;
+ struct hisi_thermal_data *data;
struct thermal_zone_device *tzd;
-
- long sensor_temp;
+ const char *irq_name;
uint32_t id;
uint32_t thres_temp;
};
+struct hisi_thermal_ops {
+ int (*get_temp)(struct hisi_thermal_sensor *sensor);
+ int (*enable_sensor)(struct hisi_thermal_sensor *sensor);
+ int (*disable_sensor)(struct hisi_thermal_sensor *sensor);
+ int (*irq_handler)(struct hisi_thermal_sensor *sensor);
+ int (*probe)(struct hisi_thermal_data *data);
+};
+
struct hisi_thermal_data {
- struct mutex thermal_lock; /* protects register data */
+ const struct hisi_thermal_ops *ops;
+ struct hisi_thermal_sensor *sensor;
struct platform_device *pdev;
struct clk *clk;
- struct hisi_thermal_sensor sensors[HISI_MAX_SENSORS];
-
- int irq, irq_bind_sensor;
- bool irq_enabled;
-
void __iomem *regs;
+ int nr_sensors;
};
-/* in millicelsius */
-static inline int _step_to_temp(int step)
+/*
+ * The temperature computation on the tsensor is as follow:
+ * Unit: millidegree Celsius
+ * Step: 200/255 (0.7843)
+ * Temperature base: -60°C
+ *
+ * The register is programmed in temperature steps, every step is 785
+ * millidegree and begins at -60 000 m°C
+ *
+ * The temperature from the steps:
+ *
+ * Temp = TempBase + (steps x 785)
+ *
+ * and the steps from the temperature:
+ *
+ * steps = (Temp - TempBase) / 785
+ *
+ */
+static inline int hi6220_thermal_step_to_temp(int step)
+{
+ return HI6220_TEMP_BASE + (step * HI6220_TEMP_STEP);
+}
+
+static inline int hi6220_thermal_temp_to_step(int temp)
{
- /*
- * Every step equals (1 * 200) / 255 celsius, and finally
- * need convert to millicelsius.
- */
- return (HISI_TEMP_BASE * 1000 + (step * 200000 / 255));
+ return DIV_ROUND_UP(temp - HI6220_TEMP_BASE, HI6220_TEMP_STEP);
}
-static inline long _temp_to_step(long temp)
+/*
+ * for Hi3660,
+ * Step: 189/922 (0.205)
+ * Temperature base: -63.780°C
+ *
+ * The register is programmed in temperature steps, every step is 205
+ * millidegree and begins at -63 780 m°C
+ */
+static inline int hi3660_thermal_step_to_temp(int step)
{
- return ((temp - HISI_TEMP_BASE * 1000) * 255) / 200000;
+ return HI3660_TEMP_BASE + step * HI3660_TEMP_STEP;
}
-static long hisi_thermal_get_sensor_temp(struct hisi_thermal_data *data,
- struct hisi_thermal_sensor *sensor)
+static inline int hi3660_thermal_temp_to_step(int temp)
{
- long val;
+ return DIV_ROUND_UP(temp - HI3660_TEMP_BASE, HI3660_TEMP_STEP);
+}
- mutex_lock(&data->thermal_lock);
+/*
+ * The lag register contains 5 bits encoding the temperature in steps.
+ *
+ * Each time the temperature crosses the threshold boundary, an
+ * interrupt is raised. It could be when the temperature is going
+ * above the threshold or below. However, if the temperature is
+ * fluctuating around this value due to the load, we can receive
+ * several interrupts which may not desired.
+ *
+ * We can setup a temperature representing the delta between the
+ * threshold and the current temperature when the temperature is
+ * decreasing.
+ *
+ * For instance: the lag register is 5°C, the threshold is 65°C, when
+ * the temperature reaches 65°C an interrupt is raised and when the
+ * temperature decrease to 65°C - 5°C another interrupt is raised.
+ *
+ * A very short lag can lead to an interrupt storm, a long lag
+ * increase the latency to react to the temperature changes. In our
+ * case, that is not really a problem as we are polling the
+ * temperature.
+ *
+ * [0:4] : lag register
+ *
+ * The temperature is coded in steps, cf. HI6220_TEMP_STEP.
+ *
+ * Min : 0x00 : 0.0 °C
+ * Max : 0x1F : 24.3 °C
+ *
+ * The 'value' parameter is in milliCelsius.
+ */
+static inline void hi6220_thermal_set_lag(void __iomem *addr, int value)
+{
+ writel(DIV_ROUND_UP(value, HI6220_TEMP_STEP) & 0x1F,
+ addr + HI6220_TEMP0_LAG);
+}
- /* disable interrupt */
- writel(0x0, data->regs + TEMP0_INT_EN);
- writel(0x1, data->regs + TEMP0_INT_CLR);
+static inline void hi6220_thermal_alarm_clear(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_INT_CLR);
+}
- /* disable module firstly */
- writel(0x0, data->regs + TEMP0_EN);
+static inline void hi6220_thermal_alarm_enable(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_INT_EN);
+}
- /* select sensor id */
- writel((sensor->id << 12), data->regs + TEMP0_CFG);
+static inline void hi6220_thermal_alarm_set(void __iomem *addr, int temp)
+{
+ writel(hi6220_thermal_temp_to_step(temp) | 0x0FFFFFF00,
+ addr + HI6220_TEMP0_TH);
+}
- /* enable module */
- writel(0x1, data->regs + TEMP0_EN);
+static inline void hi6220_thermal_reset_set(void __iomem *addr, int temp)
+{
+ writel(hi6220_thermal_temp_to_step(temp), addr + HI6220_TEMP0_RST_TH);
+}
- usleep_range(3000, 5000);
+static inline void hi6220_thermal_reset_enable(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_RST_MSK);
+}
- val = readl(data->regs + TEMP0_VALUE);
- val = _step_to_temp(val);
+static inline void hi6220_thermal_enable(void __iomem *addr, int value)
+{
+ writel(value, addr + HI6220_TEMP0_EN);
+}
- mutex_unlock(&data->thermal_lock);
+static inline int hi6220_thermal_get_temperature(void __iomem *addr)
+{
+ return hi6220_thermal_step_to_temp(readl(addr + HI6220_TEMP0_VALUE));
+}
- return val;
+/*
+ * [0:6] lag register
+ *
+ * The temperature is coded in steps, cf. HI3660_TEMP_STEP.
+ *
+ * Min : 0x00 : 0.0 °C
+ * Max : 0x7F : 26.0 °C
+ *
+ */
+static inline void hi3660_thermal_set_lag(void __iomem *addr,
+ int id, int value)
+{
+ writel(DIV_ROUND_UP(value, HI3660_TEMP_STEP) & 0x7F,
+ addr + HI3660_LAG(id));
}
-static void hisi_thermal_enable_bind_irq_sensor
- (struct hisi_thermal_data *data)
+static inline void hi3660_thermal_alarm_clear(void __iomem *addr,
+ int id, int value)
{
- struct hisi_thermal_sensor *sensor;
+ writel(value, addr + HI3660_INT_CLR(id));
+}
- mutex_lock(&data->thermal_lock);
+static inline void hi3660_thermal_alarm_enable(void __iomem *addr,
+ int id, int value)
+{
+ writel(value, addr + HI3660_INT_EN(id));
+}
- sensor = &data->sensors[data->irq_bind_sensor];
+static inline void hi3660_thermal_alarm_set(void __iomem *addr,
+ int id, int value)
+{
+ writel(value, addr + HI3660_TH(id));
+}
- /* setting the hdak time */
- writel(0x0, data->regs + TEMP0_CFG);
+static inline int hi3660_thermal_get_temperature(void __iomem *addr, int id)
+{
+ return hi3660_thermal_step_to_temp(readl(addr + HI3660_TEMP(id)));
+}
+
+/*
+ * Temperature configuration register - Sensor selection
+ *
+ * Bits [19:12]
+ *
+ * 0x0: local sensor (default)
+ * 0x1: remote sensor 1 (ACPU cluster 1)
+ * 0x2: remote sensor 2 (ACPU cluster 0)
+ * 0x3: remote sensor 3 (G3D)
+ */
+static inline void hi6220_thermal_sensor_select(void __iomem *addr, int sensor)
+{
+ writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_SS_MSK) |
+ (sensor << 12), addr + HI6220_TEMP0_CFG);
+}
+
+/*
+ * Temperature configuration register - Hdak conversion polling interval
+ *
+ * Bits [5:4]
+ *
+ * 0x0 : 0.768 ms
+ * 0x1 : 6.144 ms
+ * 0x2 : 49.152 ms
+ * 0x3 : 393.216 ms
+ */
+static inline void hi6220_thermal_hdak_set(void __iomem *addr, int value)
+{
+ writel((readl(addr + HI6220_TEMP0_CFG) & ~HI6220_TEMP0_CFG_HDAK_MSK) |
+ (value << 4), addr + HI6220_TEMP0_CFG);
+}
+
+static int hi6220_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+
+ hi6220_thermal_alarm_clear(data->regs, 1);
+ return 0;
+}
+
+static int hi3660_thermal_irq_handler(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+
+ hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
+ return 0;
+}
+
+static int hi6220_thermal_get_temp(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+
+ return hi6220_thermal_get_temperature(data->regs);
+}
+
+static int hi3660_thermal_get_temp(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+
+ return hi3660_thermal_get_temperature(data->regs, sensor->id);
+}
+
+static int hi6220_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+
+ /* disable sensor module */
+ hi6220_thermal_enable(data->regs, 0);
+ hi6220_thermal_alarm_enable(data->regs, 0);
+ hi6220_thermal_reset_enable(data->regs, 0);
+
+ clk_disable_unprepare(data->clk);
+
+ return 0;
+}
+
+static int hi3660_thermal_disable_sensor(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+
+ /* disable sensor module */
+ hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
+ return 0;
+}
+
+static int hi6220_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
+{
+ struct hisi_thermal_data *data = sensor->data;
+ int ret;
+
+ /* enable clock for tsensor */
+ ret = clk_prepare_enable(data->clk);
+ if (ret)
+ return ret;
/* disable module firstly */
- writel(0x0, data->regs + TEMP0_RST_MSK);
- writel(0x0, data->regs + TEMP0_EN);
+ hi6220_thermal_reset_enable(data->regs, 0);
+ hi6220_thermal_enable(data->regs, 0);
/* select sensor id */
- writel((sensor->id << 12), data->regs + TEMP0_CFG);
+ hi6220_thermal_sensor_select(data->regs, sensor->id);
+
+ /* setting the hdak time */
+ hi6220_thermal_hdak_set(data->regs, 0);
+
+ /* setting lag value between current temp and the threshold */
+ hi6220_thermal_set_lag(data->regs, HI6220_TEMP_LAG);
/* enable for interrupt */
- writel(_temp_to_step(sensor->thres_temp) | 0x0FFFFFF00,
- data->regs + TEMP0_TH);
+ hi6220_thermal_alarm_set(data->regs, sensor->thres_temp);
- writel(_temp_to_step(HISI_TEMP_RESET), data->regs + TEMP0_RST_TH);
+ hi6220_thermal_reset_set(data->regs, HI6220_TEMP_RESET);
/* enable module */
- writel(0x1, data->regs + TEMP0_RST_MSK);
- writel(0x1, data->regs + TEMP0_EN);
+ hi6220_thermal_reset_enable(data->regs, 1);
+ hi6220_thermal_enable(data->regs, 1);
- writel(0x0, data->regs + TEMP0_INT_CLR);
- writel(0x1, data->regs + TEMP0_INT_EN);
+ hi6220_thermal_alarm_clear(data->regs, 0);
+ hi6220_thermal_alarm_enable(data->regs, 1);
- usleep_range(3000, 5000);
-
- mutex_unlock(&data->thermal_lock);
+ return 0;
}
-static void hisi_thermal_disable_sensor(struct hisi_thermal_data *data)
+static int hi3660_thermal_enable_sensor(struct hisi_thermal_sensor *sensor)
{
- mutex_lock(&data->thermal_lock);
+ unsigned int value;
+ struct hisi_thermal_data *data = sensor->data;
- /* disable sensor module */
- writel(0x0, data->regs + TEMP0_INT_EN);
- writel(0x0, data->regs + TEMP0_RST_MSK);
- writel(0x0, data->regs + TEMP0_EN);
+ /* disable interrupt */
+ hi3660_thermal_alarm_enable(data->regs, sensor->id, 0);
+
+ /* setting lag value between current temp and the threshold */
+ hi3660_thermal_set_lag(data->regs, sensor->id, HI3660_TEMP_LAG);
+
+ /* set interrupt threshold */
+ value = hi3660_thermal_temp_to_step(sensor->thres_temp);
+ hi3660_thermal_alarm_set(data->regs, sensor->id, value);
+
+ /* enable interrupt */
+ hi3660_thermal_alarm_clear(data->regs, sensor->id, 1);
+ hi3660_thermal_alarm_enable(data->regs, sensor->id, 1);
- mutex_unlock(&data->thermal_lock);
+ return 0;
}
-static int hisi_thermal_get_temp(void *_sensor, int *temp)
+static int hi6220_thermal_probe(struct hisi_thermal_data *data)
{
- struct hisi_thermal_sensor *sensor = _sensor;
- struct hisi_thermal_data *data = sensor->thermal;
+ struct platform_device *pdev = data->pdev;
+ struct device *dev = &pdev->dev;
- int sensor_id = -1, i;
- long max_temp = 0;
+ data->clk = devm_clk_get(dev, "thermal_clk");
+ if (IS_ERR(data->clk))
+ return dev_err_probe(dev, PTR_ERR(data->clk), "failed to get thermal clk\n");
- *temp = hisi_thermal_get_sensor_temp(data, sensor);
+ data->sensor = devm_kzalloc(dev, sizeof(*data->sensor), GFP_KERNEL);
+ if (!data->sensor)
+ return -ENOMEM;
- sensor->sensor_temp = *temp;
+ data->sensor[0].id = HI6220_CLUSTER0_SENSOR;
+ data->sensor[0].irq_name = "tsensor_intr";
+ data->sensor[0].data = data;
+ data->nr_sensors = 1;
- for (i = 0; i < HISI_MAX_SENSORS; i++) {
- if (!data->sensors[i].tzd)
- continue;
+ return 0;
+}
- if (data->sensors[i].sensor_temp >= max_temp) {
- max_temp = data->sensors[i].sensor_temp;
- sensor_id = i;
- }
- }
+static int hi3660_thermal_probe(struct hisi_thermal_data *data)
+{
+ struct platform_device *pdev = data->pdev;
+ struct device *dev = &pdev->dev;
- /* If no sensor has been enabled, then skip to enable irq */
- if (sensor_id == -1)
- return 0;
+ data->nr_sensors = 1;
- mutex_lock(&data->thermal_lock);
- data->irq_bind_sensor = sensor_id;
- mutex_unlock(&data->thermal_lock);
-
- dev_dbg(&data->pdev->dev, "id=%d, irq=%d, temp=%d, thres=%d\n",
- sensor->id, data->irq_enabled, *temp, sensor->thres_temp);
- /*
- * Bind irq to sensor for two cases:
- * Reenable alarm IRQ if temperature below threshold;
- * if irq has been enabled, always set it;
- */
- if (data->irq_enabled) {
- hisi_thermal_enable_bind_irq_sensor(data);
- return 0;
- }
+ data->sensor = devm_kcalloc(dev, data->nr_sensors,
+ sizeof(*data->sensor), GFP_KERNEL);
+ if (!data->sensor)
+ return -ENOMEM;
- if (max_temp < sensor->thres_temp) {
- data->irq_enabled = true;
- hisi_thermal_enable_bind_irq_sensor(data);
- enable_irq(data->irq);
- }
+ data->sensor[0].id = HI3660_BIG_SENSOR;
+ data->sensor[0].irq_name = "tsensor_a73";
+ data->sensor[0].data = data;
return 0;
}
-static struct thermal_zone_of_device_ops hisi_of_thermal_ops = {
- .get_temp = hisi_thermal_get_temp,
-};
-
-static irqreturn_t hisi_thermal_alarm_irq(int irq, void *dev)
+static int hisi_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
{
- struct hisi_thermal_data *data = dev;
+ struct hisi_thermal_sensor *sensor = thermal_zone_device_priv(tz);
+ struct hisi_thermal_data *data = sensor->data;
- disable_irq_nosync(irq);
- data->irq_enabled = false;
+ *temp = data->ops->get_temp(sensor);
- return IRQ_WAKE_THREAD;
+ return 0;
}
+static const struct thermal_zone_device_ops hisi_of_thermal_ops = {
+ .get_temp = hisi_thermal_get_temp,
+};
+
static irqreturn_t hisi_thermal_alarm_irq_thread(int irq, void *dev)
{
- struct hisi_thermal_data *data = dev;
- struct hisi_thermal_sensor *sensor;
- int i;
+ struct hisi_thermal_sensor *sensor = dev;
+ struct hisi_thermal_data *data = sensor->data;
+ int temp = 0;
- mutex_lock(&data->thermal_lock);
- sensor = &data->sensors[data->irq_bind_sensor];
+ data->ops->irq_handler(sensor);
- dev_crit(&data->pdev->dev, "THERMAL ALARM: T > %d\n",
- sensor->thres_temp / 1000);
- mutex_unlock(&data->thermal_lock);
+ temp = data->ops->get_temp(sensor);
- for (i = 0; i < HISI_MAX_SENSORS; i++) {
- if (!data->sensors[i].tzd)
- continue;
+ if (temp >= sensor->thres_temp) {
+ dev_crit(&data->pdev->dev,
+ "sensor <%d> THERMAL ALARM: %d > %d\n",
+ sensor->id, temp, sensor->thres_temp);
- thermal_zone_device_update(data->sensors[i].tzd,
+ thermal_zone_device_update(sensor->tzd,
THERMAL_EVENT_UNSPECIFIED);
+
+ } else {
+ dev_crit(&data->pdev->dev,
+ "sensor <%d> THERMAL ALARM stopped: %d < %d\n",
+ sensor->id, temp, sensor->thres_temp);
}
return IRQ_HANDLED;
}
-static int hisi_thermal_register_sensor(struct platform_device *pdev,
- struct hisi_thermal_data *data,
- struct hisi_thermal_sensor *sensor,
- int index)
+static int hisi_trip_walk_cb(struct thermal_trip *trip, void *arg)
{
- int ret, i;
- const struct thermal_trip *trip;
+ struct hisi_thermal_sensor *sensor = arg;
- sensor->id = index;
- sensor->thermal = data;
+ if (trip->type != THERMAL_TRIP_PASSIVE)
+ return 0;
+
+ sensor->thres_temp = trip->temperature;
+ /* Return nonzero to terminate the search. */
+ return 1;
+}
- sensor->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev,
- sensor->id, sensor, &hisi_of_thermal_ops);
+static int hisi_thermal_register_sensor(struct platform_device *pdev,
+ struct hisi_thermal_sensor *sensor)
+{
+ int ret;
+
+ sensor->tzd = devm_thermal_of_zone_register(&pdev->dev,
+ sensor->id, sensor,
+ &hisi_of_thermal_ops);
if (IS_ERR(sensor->tzd)) {
ret = PTR_ERR(sensor->tzd);
sensor->tzd = NULL;
@@ -265,20 +493,36 @@ static int hisi_thermal_register_sensor(struct platform_device *pdev,
return ret;
}
- trip = of_thermal_get_trip_points(sensor->tzd);
-
- for (i = 0; i < of_thermal_get_ntrips(sensor->tzd); i++) {
- if (trip[i].type == THERMAL_TRIP_PASSIVE) {
- sensor->thres_temp = trip[i].temperature;
- break;
- }
- }
+ thermal_zone_for_each_trip(sensor->tzd, hisi_trip_walk_cb, sensor);
return 0;
}
+static const struct hisi_thermal_ops hi6220_ops = {
+ .get_temp = hi6220_thermal_get_temp,
+ .enable_sensor = hi6220_thermal_enable_sensor,
+ .disable_sensor = hi6220_thermal_disable_sensor,
+ .irq_handler = hi6220_thermal_irq_handler,
+ .probe = hi6220_thermal_probe,
+};
+
+static const struct hisi_thermal_ops hi3660_ops = {
+ .get_temp = hi3660_thermal_get_temp,
+ .enable_sensor = hi3660_thermal_enable_sensor,
+ .disable_sensor = hi3660_thermal_disable_sensor,
+ .irq_handler = hi3660_thermal_irq_handler,
+ .probe = hi3660_thermal_probe,
+};
+
static const struct of_device_id of_hisi_thermal_match[] = {
- { .compatible = "hisilicon,tsensor" },
+ {
+ .compatible = "hisilicon,tsensor",
+ .data = &hi6220_ops,
+ },
+ {
+ .compatible = "hisilicon,hi3660-tsensor",
+ .data = &hi3660_ops,
+ },
{ /* end */ }
};
MODULE_DEVICE_TABLE(of, of_hisi_thermal_match);
@@ -288,108 +532,89 @@ static void hisi_thermal_toggle_sensor(struct hisi_thermal_sensor *sensor,
{
struct thermal_zone_device *tzd = sensor->tzd;
- tzd->ops->set_mode(tzd,
- on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
+ if (on)
+ thermal_zone_device_enable(tzd);
+ else
+ thermal_zone_device_disable(tzd);
}
static int hisi_thermal_probe(struct platform_device *pdev)
{
struct hisi_thermal_data *data;
- struct resource *res;
- int i;
- int ret;
+ struct device *dev = &pdev->dev;
+ int i, ret;
- data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- mutex_init(&data->thermal_lock);
data->pdev = pdev;
+ platform_set_drvdata(pdev, data);
+ data->ops = of_device_get_match_data(dev);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- data->regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(data->regs)) {
- dev_err(&pdev->dev, "failed to get io address\n");
+ data->regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(data->regs))
return PTR_ERR(data->regs);
- }
-
- data->irq = platform_get_irq(pdev, 0);
- if (data->irq < 0)
- return data->irq;
- ret = devm_request_threaded_irq(&pdev->dev, data->irq,
- hisi_thermal_alarm_irq,
- hisi_thermal_alarm_irq_thread,
- 0, "hisi_thermal", data);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
+ ret = data->ops->probe(data);
+ if (ret)
return ret;
- }
- platform_set_drvdata(pdev, data);
+ for (i = 0; i < data->nr_sensors; i++) {
+ struct hisi_thermal_sensor *sensor = &data->sensor[i];
- data->clk = devm_clk_get(&pdev->dev, "thermal_clk");
- if (IS_ERR(data->clk)) {
- ret = PTR_ERR(data->clk);
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev,
- "failed to get thermal clk: %d\n", ret);
- return ret;
- }
+ ret = hisi_thermal_register_sensor(pdev, sensor);
+ if (ret) {
+ dev_err(dev, "failed to register thermal sensor: %d\n",
+ ret);
+ return ret;
+ }
- /* enable clock for thermal */
- ret = clk_prepare_enable(data->clk);
- if (ret) {
- dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret);
- return ret;
- }
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_request_threaded_irq(dev, ret, NULL,
+ hisi_thermal_alarm_irq_thread,
+ IRQF_ONESHOT, sensor->irq_name,
+ sensor);
+ if (ret < 0) {
+ dev_err(dev, "Failed to request alarm irq: %d\n", ret);
+ return ret;
+ }
+
+ ret = data->ops->enable_sensor(sensor);
+ if (ret) {
+ dev_err(dev, "Failed to setup the sensor: %d\n", ret);
+ return ret;
+ }
- hisi_thermal_enable_bind_irq_sensor(data);
- irq_get_irqchip_state(data->irq, IRQCHIP_STATE_MASKED,
- &data->irq_enabled);
-
- for (i = 0; i < HISI_MAX_SENSORS; ++i) {
- ret = hisi_thermal_register_sensor(pdev, data,
- &data->sensors[i], i);
- if (ret)
- dev_err(&pdev->dev,
- "failed to register thermal sensor: %d\n", ret);
- else
- hisi_thermal_toggle_sensor(&data->sensors[i], true);
+ hisi_thermal_toggle_sensor(sensor, true);
}
return 0;
}
-static int hisi_thermal_remove(struct platform_device *pdev)
+static void hisi_thermal_remove(struct platform_device *pdev)
{
struct hisi_thermal_data *data = platform_get_drvdata(pdev);
int i;
- for (i = 0; i < HISI_MAX_SENSORS; i++) {
- struct hisi_thermal_sensor *sensor = &data->sensors[i];
-
- if (!sensor->tzd)
- continue;
+ for (i = 0; i < data->nr_sensors; i++) {
+ struct hisi_thermal_sensor *sensor = &data->sensor[i];
hisi_thermal_toggle_sensor(sensor, false);
+ data->ops->disable_sensor(sensor);
}
-
- hisi_thermal_disable_sensor(data);
- clk_disable_unprepare(data->clk);
-
- return 0;
}
-#ifdef CONFIG_PM_SLEEP
static int hisi_thermal_suspend(struct device *dev)
{
struct hisi_thermal_data *data = dev_get_drvdata(dev);
+ int i;
- hisi_thermal_disable_sensor(data);
- data->irq_enabled = false;
-
- clk_disable_unprepare(data->clk);
+ for (i = 0; i < data->nr_sensors; i++)
+ data->ops->disable_sensor(&data->sensor[i]);
return 0;
}
@@ -397,27 +622,22 @@ static int hisi_thermal_suspend(struct device *dev)
static int hisi_thermal_resume(struct device *dev)
{
struct hisi_thermal_data *data = dev_get_drvdata(dev);
- int ret;
-
- ret = clk_prepare_enable(data->clk);
- if (ret)
- return ret;
+ int i, ret = 0;
- data->irq_enabled = true;
- hisi_thermal_enable_bind_irq_sensor(data);
+ for (i = 0; i < data->nr_sensors; i++)
+ ret |= data->ops->enable_sensor(&data->sensor[i]);
- return 0;
+ return ret;
}
-#endif
-static SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
+static DEFINE_SIMPLE_DEV_PM_OPS(hisi_thermal_pm_ops,
hisi_thermal_suspend, hisi_thermal_resume);
static struct platform_driver hisi_thermal_driver = {
.driver = {
.name = "hisi_thermal",
- .pm = &hisi_thermal_pm_ops,
- .of_match_table = of_hisi_thermal_match,
+ .pm = pm_sleep_ptr(&hisi_thermal_pm_ops),
+ .of_match_table = of_hisi_thermal_match,
},
.probe = hisi_thermal_probe,
.remove = hisi_thermal_remove,
@@ -427,5 +647,5 @@ module_platform_driver(hisi_thermal_driver);
MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");
-MODULE_DESCRIPTION("Hisilicon thermal driver");
+MODULE_DESCRIPTION("HiSilicon thermal driver");
MODULE_LICENSE("GPL v2");
generated by cgit (git 2.34.1) at 2025-12-26 16:53:55 +0000