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thermal/drivers/hisi: Remove the multiple sensors support 

By essence, the tsensor does not really support multiple sensor at the same
time. It allows to set a sensor and use it to get the temperature, another
sensor could be switched but with a delay of 3-5ms. It is difficult to read
simultaneously several sensors without a big delay.

Today, just one sensor is used, it is not necessary to deal with multiple
sensors in the code. Remove them and if it is needed in the future add them
on top of a code which will be clean up in the meantime.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Wangtao (Kevin, Kirin) <kevin.wangtao@hisilicon.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Daniel Lezcano 2017-10-19 19:05:44 +02:00 committed by Eduardo Valentin
parent c176b10b02
commit ff4ec2997d
1 changed files with 19 additions and 56 deletions
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75
drivers/thermal/hisi_thermal.c
View File

@ -39,6 +39,7 @@
#define HISI_TEMP_RESET (100000)
#define HISI_MAX_SENSORS 4
#define HISI_DEFAULT_SENSOR 2
struct hisi_thermal_sensor {
struct hisi_thermal_data *thermal;
@ -53,9 +54,8 @@ struct hisi_thermal_data {
struct mutex thermal_lock; /* protects register data */
struct platform_device *pdev;
struct clk *clk;
struct hisi_thermal_sensor sensors[HISI_MAX_SENSORS];
int irq, irq_bind_sensor;
struct hisi_thermal_sensor sensors;
int irq;
bool irq_enabled;
void __iomem *regs;
@ -113,7 +113,7 @@ static void hisi_thermal_enable_bind_irq_sensor
mutex_lock(&data->thermal_lock);
sensor = &data->sensors[data->irq_bind_sensor];
sensor = &data->sensors;
/* setting the hdak time */
writel(0x0, data->regs + TEMP0_CFG);
@ -160,31 +160,8 @@ static int hisi_thermal_get_temp(void *_sensor, int *temp)
struct hisi_thermal_sensor *sensor = _sensor;
struct hisi_thermal_data *data = sensor->thermal;
int sensor_id = -1, i;
long max_temp = 0;
*temp = hisi_thermal_get_sensor_temp(data, sensor);
sensor->sensor_temp = *temp;
for (i = 0; i < HISI_MAX_SENSORS; i++) {
if (!data->sensors[i].tzd)
continue;
if (data->sensors[i].sensor_temp >= max_temp) {
max_temp = data->sensors[i].sensor_temp;
sensor_id = i;
}
}
/* If no sensor has been enabled, then skip to enable irq */
if (sensor_id == -1)
return 0;
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);
/*
@ -197,7 +174,7 @@ static int hisi_thermal_get_temp(void *_sensor, int *temp)
return 0;
}
if (max_temp < sensor->thres_temp) {
if (*temp < sensor->thres_temp) {
data->irq_enabled = true;
hisi_thermal_enable_bind_irq_sensor(data);
enable_irq(data->irq);
@ -224,22 +201,16 @@ 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;
mutex_lock(&data->thermal_lock);
sensor = &data->sensors[data->irq_bind_sensor];
sensor = &data->sensors;
dev_crit(&data->pdev->dev, "THERMAL ALARM: T > %d\n",
sensor->thres_temp / 1000);
mutex_unlock(&data->thermal_lock);
for (i = 0; i < HISI_MAX_SENSORS; i++) {
if (!data->sensors[i].tzd)
continue;
thermal_zone_device_update(data->sensors[i].tzd,
THERMAL_EVENT_UNSPECIFIED);
}
thermal_zone_device_update(data->sensors.tzd,
THERMAL_EVENT_UNSPECIFIED);
return IRQ_HANDLED;
}
@ -296,7 +267,6 @@ static int hisi_thermal_probe(struct platform_device *pdev)
{
struct hisi_thermal_data *data;
struct resource *res;
int i;
int ret;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
@ -347,16 +317,17 @@ static int hisi_thermal_probe(struct platform_device *pdev)
hisi_thermal_enable_bind_irq_sensor(data);
data->irq_enabled = true;
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);
ret = hisi_thermal_register_sensor(pdev, data,
&data->sensors,
HISI_DEFAULT_SENSOR);
if (ret) {
dev_err(&pdev->dev, "failed to register thermal sensor: %d\n",
ret);
return ret;
}
hisi_thermal_toggle_sensor(&data->sensors, true);
enable_irq(data->irq);
return 0;
@ -365,17 +336,9 @@ static int hisi_thermal_probe(struct platform_device *pdev)
static int 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;
hisi_thermal_toggle_sensor(sensor, false);
}
struct hisi_thermal_sensor *sensor = &data->sensors;
hisi_thermal_toggle_sensor(sensor, false);
hisi_thermal_disable_sensor(data);
clk_disable_unprepare(data->clk);