From: Michael Kao <[email protected]>
Provide thermal zone to read thermal sensor
in the SoC. We can read all the thermal sensors
value in the SoC by the node /sys/class/thermal/
In mtk_thermal_bank_temperature, return -EAGAIN instead of -EACCESS
on the first read of sensor that often are bogus values.
This can avoid following warning on boot:
thermal thermal_zone6: failed to read out thermal zone (-13)
Signed-off-by: Michael Kao <[email protected]>
Signed-off-by: Ben Tseng <[email protected]>
---
This patchset supports for MT8183 chip to mtk_thermal.c.
Add thermal zone of all the thermal sensor in SoC for
another get temperatrue. They don't need to thermal throttle.
And we bind coolers for thermal zone nodes of cpu_thermal.
Changes in V8:
- Rebase to kernel-v5.13-rc1
- Resend
Changes in v7:
- Fix build error in v6.
Changes in v6:
- Rebase to kernel-5.11-rc1.
- [1/3]
- add interrupts property.
- [2/3]
- add the Tested-by in the commit message.
- [3/3]
- use the mt->conf->msr[id] instead of conf->msr[id] in the
_get_sensor_temp and mtk_thermal_bank_temperature.
- remove the redundant space in _get_sensor_temp and
mtk_read_sensor_temp.
- change kmalloc to dev_kmalloc in mtk_thermal_probe.
Changes in v5:
- Rebase to kernel-5.9-rc1.
- Revise the title of cover letter.
- Drop "[v4,7/7] thermal: mediatek: use spinlock to protect PTPCORESEL"
- [2/2]
- Add the judgement to the version of raw_to_mcelsius.
Changes in v4:
- Rebase to kernel-5.6-rc1.
- [1/7]
- Squash thermal zone settings in the dtsi from [v3,5/8]
arm64: dts: mt8183: Increase polling frequency for CPU thermal zone.
- Remove the property of interrupts and mediatek,hw-reset-temp.
- [2/7]
- Correct commit message.
- [4/7]
- Change the target temperature to the 80C and change the commit message.
- [6/7]
- Adjust newline alignment.
- Fix the judgement on the return value of registering thermal zone.
Changes in v3:
- Rebase to kernel-5.5-rc1.
- [1/8]
- Update sustainable power of cpu, tzts1~5 and tztsABB.
- [7/8]
- Bypass the failure that non cpu_thermal sensor is not find in thermal-zones
in dts, which is normal for mt8173, so prompt a warning here instead of
failing.
Return -EAGAIN instead of -EACCESS on the first read of sensor that
often are bogus values. This can avoid following warning on boot:
thermal thermal_zone6: failed to read out thermal zone (-13)
Changes in v2:
- [1/8]
- Add the sustainable-power,trips,cooling-maps to the tzts1~tztsABB.
- [4/8]
- Add the min opp of cpu throttle.
Matthias Kaehlcke (1):
arm64: dts: mt8183: Configure CPU cooling
Michael Kao (2):
thermal: mediatek: add another get_temp ops for thermal sensors
arm64: dts: mt8183: add thermal zone node
---
drivers/thermal/mtk_thermal.c | 100 +++++++++++++++++++++++++++++++-----------
1 file changed, 75 insertions(+), 25 deletions(-)
diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 97e8678..b6bee451 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -245,6 +245,11 @@ enum mtk_thermal_version {
struct mtk_thermal;
+struct mtk_thermal_zone {
+ struct mtk_thermal *mt;
+ int id;
+};
+
struct thermal_bank_cfg {
unsigned int num_sensors;
const int *sensors;
@@ -637,6 +642,30 @@ static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
mutex_unlock(&mt->lock);
}
+static u32 _get_sensor_temp(struct mtk_thermal *mt, int id)
+{
+ u32 raw;
+ int temp;
+
+ raw = readl(mt->thermal_base + mt->conf->msr[id]);
+
+ if (mt->conf->version == MTK_THERMAL_V1)
+ temp = raw_to_mcelsius_v1(mt, id, raw);
+ else
+ temp = raw_to_mcelsius_v2(mt, id, raw);
+
+ /*
+ * The first read of a sensor often contains very high bogus
+ * temperature value. Filter these out so that the system does
+ * not immediately shut down.
+ */
+
+ if (temp > 200000)
+ return -EAGAIN;
+ else
+ return temp;
+}
+
/**
* mtk_thermal_bank_temperature - get the temperature of a bank
* @bank: The bank
@@ -647,28 +676,11 @@ static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
{
struct mtk_thermal *mt = bank->mt;
- const struct mtk_thermal_data *conf = mt->conf;
int i, temp = INT_MIN, max = INT_MIN;
- u32 raw;
-
- for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {
- raw = readl(mt->thermal_base + conf->msr[i]);
- if (mt->conf->version == MTK_THERMAL_V1) {
- temp = raw_to_mcelsius_v1(
- mt, conf->bank_data[bank->id].sensors[i], raw);
- } else {
- temp = raw_to_mcelsius_v2(
- mt, conf->bank_data[bank->id].sensors[i], raw);
- }
+ for (i = 0; i < mt->conf->bank_data[bank->id].num_sensors; i++) {
- /*
- * The first read of a sensor often contains very high bogus
- * temperature value. Filter these out so that the system does
- * not immediately shut down.
- */
- if (temp > 200000)
- temp = 0;
+ temp = _get_sensor_temp(mt, i);
if (temp > max)
max = temp;
@@ -679,7 +691,8 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
static int mtk_read_temp(void *data, int *temperature)
{
- struct mtk_thermal *mt = data;
+ struct mtk_thermal_zone *tz = data;
+ struct mtk_thermal *mt = tz->mt;
int i;
int tempmax = INT_MIN;
@@ -698,10 +711,28 @@ static int mtk_read_temp(void *data, int *temperature)
return 0;
}
+static int mtk_read_sensor_temp(void *data, int *temperature)
+{
+ struct mtk_thermal_zone *tz = data;
+ struct mtk_thermal *mt = tz->mt;
+ int id = tz->id - 1;
+
+ if (id < 0)
+ return -EACCES;
+
+ *temperature = _get_sensor_temp(mt, id);
+
+ return 0;
+}
+
static const struct thermal_zone_of_device_ops mtk_thermal_ops = {
.get_temp = mtk_read_temp,
};
+static const struct thermal_zone_of_device_ops mtk_thermal_sensor_ops = {
+ .get_temp = mtk_read_sensor_temp,
+};
+
static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
u32 apmixed_phys_base, u32 auxadc_phys_base,
int ctrl_id)
@@ -992,6 +1023,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
u64 auxadc_phys_base, apmixed_phys_base;
struct thermal_zone_device *tzdev;
void __iomem *apmixed_base, *auxadc_base;
+ struct mtk_thermal_zone *tz;
mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
if (!mt)
@@ -1080,11 +1112,29 @@ static int mtk_thermal_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mt);
- tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, mt,
- &mtk_thermal_ops);
- if (IS_ERR(tzdev)) {
- ret = PTR_ERR(tzdev);
- goto err_disable_clk_peri_therm;
+ for (i = 0; i < mt->conf->num_sensors + 1; i++) {
+ tz = devm_kmalloc(&pdev->dev, sizeof(*tz), GFP_KERNEL);
+ if (!tz)
+ return -ENOMEM;
+
+ tz->mt = mt;
+ tz->id = i;
+
+ tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, i, tz, (i == 0) ?
+ &mtk_thermal_ops :
+ &mtk_thermal_sensor_ops);
+
+ if (IS_ERR(tzdev)) {
+ if (PTR_ERR(tzdev) == -ENODEV) {
+ dev_warn(&pdev->dev,
+ "sensor %d not registered in thermal zone in dt\n", i);
+ continue;
+ }
+ if (PTR_ERR(tzdev) == -EACCES) {
+ ret = PTR_ERR(tzdev);
+ goto err_disable_clk_peri_therm;
+ }
+ }
}
return 0;
--
1.8.1.1.dirty
On 03/06/2021 13:00, Ben Tseng wrote:
> From: Michael Kao <[email protected]>
>
> Provide thermal zone to read thermal sensor
> in the SoC. We can read all the thermal sensors
> value in the SoC by the node /sys/class/thermal/
>
> In mtk_thermal_bank_temperature, return -EAGAIN instead of -EACCESS
> on the first read of sensor that often are bogus values.
> This can avoid following warning on boot:
>
> thermal thermal_zone6: failed to read out thermal zone (-13)
>
> Signed-off-by: Michael Kao <[email protected]>
> Signed-off-by: Ben Tseng <[email protected]>
>
> ---
>
> This patchset supports for MT8183 chip to mtk_thermal.c.
> Add thermal zone of all the thermal sensor in SoC for
> another get temperatrue. They don't need to thermal throttle.
> And we bind coolers for thermal zone nodes of cpu_thermal.
>
> Changes in V8:
> - Rebase to kernel-v5.13-rc1
> - Resend
>
> Changes in v7:
> - Fix build error in v6.
>
> Changes in v6:
> - Rebase to kernel-5.11-rc1.
> - [1/3]
> - add interrupts property.
> - [2/3]
> - add the Tested-by in the commit message.
> - [3/3]
> - use the mt->conf->msr[id] instead of conf->msr[id] in the
> _get_sensor_temp and mtk_thermal_bank_temperature.
> - remove the redundant space in _get_sensor_temp and
> mtk_read_sensor_temp.
> - change kmalloc to dev_kmalloc in mtk_thermal_probe.
>
> Changes in v5:
> - Rebase to kernel-5.9-rc1.
> - Revise the title of cover letter.
> - Drop "[v4,7/7] thermal: mediatek: use spinlock to protect PTPCORESEL"
> - [2/2]
> - Add the judgement to the version of raw_to_mcelsius.
>
> Changes in v4:
> - Rebase to kernel-5.6-rc1.
> - [1/7]
> - Squash thermal zone settings in the dtsi from [v3,5/8]
> arm64: dts: mt8183: Increase polling frequency for CPU thermal zone.
> - Remove the property of interrupts and mediatek,hw-reset-temp.
> - [2/7]
> - Correct commit message.
> - [4/7]
> - Change the target temperature to the 80C and change the commit message.
> - [6/7]
> - Adjust newline alignment.
> - Fix the judgement on the return value of registering thermal zone.
>
> Changes in v3:
> - Rebase to kernel-5.5-rc1.
> - [1/8]
> - Update sustainable power of cpu, tzts1~5 and tztsABB.
> - [7/8]
> - Bypass the failure that non cpu_thermal sensor is not find in thermal-zones
> in dts, which is normal for mt8173, so prompt a warning here instead of
> failing.
>
> Return -EAGAIN instead of -EACCESS on the first read of sensor that
> often are bogus values. This can avoid following warning on boot:
>
> thermal thermal_zone6: failed to read out thermal zone (-13)
>
> Changes in v2:
> - [1/8]
> - Add the sustainable-power,trips,cooling-maps to the tzts1~tztsABB.
> - [4/8]
> - Add the min opp of cpu throttle.
>
> Matthias Kaehlcke (1):
> arm64: dts: mt8183: Configure CPU cooling
>
> Michael Kao (2):
> thermal: mediatek: add another get_temp ops for thermal sensors
> arm64: dts: mt8183: add thermal zone node
> ---
> drivers/thermal/mtk_thermal.c | 100 +++++++++++++++++++++++++++++++-----------
> 1 file changed, 75 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
> index 97e8678..b6bee451 100644
> --- a/drivers/thermal/mtk_thermal.c
> +++ b/drivers/thermal/mtk_thermal.c
> @@ -245,6 +245,11 @@ enum mtk_thermal_version {
>
> struct mtk_thermal;
>
> +struct mtk_thermal_zone {
> + struct mtk_thermal *mt;
> + int id;
> +};
How does it differ from 'struct mtk_thermal_bank' ?
> struct thermal_bank_cfg {
> unsigned int num_sensors;
> const int *sensors;
> @@ -637,6 +642,30 @@ static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
> mutex_unlock(&mt->lock);
> }
>
> +static u32 _get_sensor_temp(struct mtk_thermal *mt, int id)
> +{
> + u32 raw;
> + int temp;
> +
> + raw = readl(mt->thermal_base + mt->conf->msr[id]);
> +
> + if (mt->conf->version == MTK_THERMAL_V1)
> + temp = raw_to_mcelsius_v1(mt, id, raw);
> + else
> + temp = raw_to_mcelsius_v2(mt, id, raw);
Please add the proper conversion function as a callback and set it at
probe time, instead of checking at every call.
> + /*
> + * The first read of a sensor often contains very high bogus
> + * temperature value. Filter these out so that the system does
> + * not immediately shut down.
> + */
If it happens only once, why not call this function at probe time so
this test won't be needed.
> + if (temp > 200000)
> + return -EAGAIN;
> + else
> + return temp;
> +}
> +
> /**
> * mtk_thermal_bank_temperature - get the temperature of a bank
> * @bank: The bank
> @@ -647,28 +676,11 @@ static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank)
> static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
> {
> struct mtk_thermal *mt = bank->mt;
> - const struct mtk_thermal_data *conf = mt->conf;
> int i, temp = INT_MIN, max = INT_MIN;
> - u32 raw;
> -
> - for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {
> - raw = readl(mt->thermal_base + conf->msr[i]);
>
> - if (mt->conf->version == MTK_THERMAL_V1) {
> - temp = raw_to_mcelsius_v1(
> - mt, conf->bank_data[bank->id].sensors[i], raw);
> - } else {
> - temp = raw_to_mcelsius_v2(
> - mt, conf->bank_data[bank->id].sensors[i], raw);
> - }
> + for (i = 0; i < mt->conf->bank_data[bank->id].num_sensors; i++) {
>
> - /*
> - * The first read of a sensor often contains very high bogus
> - * temperature value. Filter these out so that the system does
> - * not immediately shut down.
> - */
> - if (temp > 200000)
> - temp = 0;
> + temp = _get_sensor_temp(mt, i);
>
> if (temp > max)
> max = temp;
> @@ -679,7 +691,8 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
>
> static int mtk_read_temp(void *data, int *temperature)
> {
> - struct mtk_thermal *mt = data;
> + struct mtk_thermal_zone *tz = data;
> + struct mtk_thermal *mt = tz->mt;
> int i;
> int tempmax = INT_MIN;
>
> @@ -698,10 +711,28 @@ static int mtk_read_temp(void *data, int *temperature)
> return 0;
> }
>
> +static int mtk_read_sensor_temp(void *data, int *temperature)
> +{
> + struct mtk_thermal_zone *tz = data;
> + struct mtk_thermal *mt = tz->mt;
> + int id = tz->id - 1;
> +
> + if (id < 0)
> + return -EACCES;
How this can happen ?
> +
> + *temperature = _get_sensor_temp(mt, id);
> +
> + return 0;
> +}
> +
> static const struct thermal_zone_of_device_ops mtk_thermal_ops = {
> .get_temp = mtk_read_temp,
> };
>
> +static const struct thermal_zone_of_device_ops mtk_thermal_sensor_ops = {
> + .get_temp = mtk_read_sensor_temp,
> +};
> +
> static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
> u32 apmixed_phys_base, u32 auxadc_phys_base,
> int ctrl_id)
> @@ -992,6 +1023,7 @@ static int mtk_thermal_probe(struct platform_device *pdev)
> u64 auxadc_phys_base, apmixed_phys_base;
> struct thermal_zone_device *tzdev;
> void __iomem *apmixed_base, *auxadc_base;
> + struct mtk_thermal_zone *tz;
>
> mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
> if (!mt)
> @@ -1080,11 +1112,29 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>
> platform_set_drvdata(pdev, mt);
>
> - tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, mt,
> - &mtk_thermal_ops);
> - if (IS_ERR(tzdev)) {
> - ret = PTR_ERR(tzdev);
> - goto err_disable_clk_peri_therm;
> + for (i = 0; i < mt->conf->num_sensors + 1; i++) {
> + tz = devm_kmalloc(&pdev->dev, sizeof(*tz), GFP_KERNEL);
> + if (!tz)
> + return -ENOMEM;
> +
> + tz->mt = mt;
> + tz->id = i;
> +
> + tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, i, tz, (i == 0) ?
> + &mtk_thermal_ops :
> + &mtk_thermal_sensor_ops);
> +
> + if (IS_ERR(tzdev)) {
> + if (PTR_ERR(tzdev) == -ENODEV) {
> + dev_warn(&pdev->dev,
> + "sensor %d not registered in thermal zone in dt\n", i);
> + continue;
> + }
> + if (PTR_ERR(tzdev) == -EACCES) {
> + ret = PTR_ERR(tzdev);
> + goto err_disable_clk_peri_therm;
> + }
If the error is none of the above, the loop continues. Is that what you
want ?
> + }
> }
>
> return 0;
>
--
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<http://www.linaro.org/linaro-blog/> Blog
Dear Daniel,
Sorry for the late reply
On Mon, 2021-06-14 at 18:58 +0200, Daniel Lezcano wrote:
> On 03/06/2021 13:00, Ben Tseng wrote:
> > From: Michael Kao <[email protected]>
> >
> > Provide thermal zone to read thermal sensor
> > in the SoC. We can read all the thermal sensors
> > value in the SoC by the node /sys/class/thermal/
> >
> > In mtk_thermal_bank_temperature, return -EAGAIN instead of -EACCESS
> > on the first read of sensor that often are bogus values.
> > This can avoid following warning on boot:
> >
> > thermal thermal_zone6: failed to read out thermal zone (-13)
> >
> > Signed-off-by: Michael Kao <[email protected]>
> > Signed-off-by: Ben Tseng <[email protected]>
> >
> > ---
> >
> > This patchset supports for MT8183 chip to mtk_thermal.c.
> > Add thermal zone of all the thermal sensor in SoC for
> > another get temperatrue. They don't need to thermal throttle.
> > And we bind coolers for thermal zone nodes of cpu_thermal.
> >
> > Changes in V8:
> > - Rebase to kernel-v5.13-rc1
> > - Resend
> >
> > Changes in v7:
> > - Fix build error in v6.
> >
> > Changes in v6:
> > - Rebase to kernel-5.11-rc1.
> > - [1/3]
> > - add interrupts property.
> > - [2/3]
> > - add the Tested-by in the commit message.
> > - [3/3]
> > - use the mt->conf->msr[id] instead of conf->msr[id] in the
> > _get_sensor_temp and mtk_thermal_bank_temperature.
> > - remove the redundant space in _get_sensor_temp and
> > mtk_read_sensor_temp.
> > - change kmalloc to dev_kmalloc in mtk_thermal_probe.
> >
> > Changes in v5:
> > - Rebase to kernel-5.9-rc1.
> > - Revise the title of cover letter.
> > - Drop "[v4,7/7] thermal: mediatek: use spinlock to protect
> > PTPCORESEL"
> > - [2/2]
> > - Add the judgement to the version of raw_to_mcelsius.
> >
> > Changes in v4:
> > - Rebase to kernel-5.6-rc1.
> > - [1/7]
> > - Squash thermal zone settings in the dtsi from [v3,5/8]
> > arm64: dts: mt8183: Increase polling frequency for CPU
> > thermal zone.
> > - Remove the property of interrupts and mediatek,hw-reset-
> > temp.
> > - [2/7]
> > - Correct commit message.
> > - [4/7]
> > - Change the target temperature to the 80C and change the
> > commit message.
> > - [6/7]
> > - Adjust newline alignment.
> > - Fix the judgement on the return value of registering
> > thermal zone.
> >
> > Changes in v3:
> > - Rebase to kernel-5.5-rc1.
> > - [1/8]
> > - Update sustainable power of cpu, tzts1~5 and tztsABB.
> > - [7/8]
> > - Bypass the failure that non cpu_thermal sensor is not
> > find in thermal-zones
> > in dts, which is normal for mt8173, so prompt a warning
> > here instead of
> > failing.
> >
> > Return -EAGAIN instead of -EACCESS on the first read of sensor
> > that
> > often are bogus values. This can avoid following warning on
> > boot:
> >
> > thermal thermal_zone6: failed to read out thermal zone (-
> > 13)
> >
> > Changes in v2:
> > - [1/8]
> > - Add the sustainable-power,trips,cooling-maps to the
> > tzts1~tztsABB.
> > - [4/8]
> > - Add the min opp of cpu throttle.
> >
> > Matthias Kaehlcke (1):
> > arm64: dts: mt8183: Configure CPU cooling
> >
> > Michael Kao (2):
> > thermal: mediatek: add another get_temp ops for thermal sensors
> > arm64: dts: mt8183: add thermal zone node
> > ---
> > drivers/thermal/mtk_thermal.c | 100
> > +++++++++++++++++++++++++++++++-----------
> > 1 file changed, 75 insertions(+), 25 deletions(-)
> >
> > diff --git a/drivers/thermal/mtk_thermal.c
> > b/drivers/thermal/mtk_thermal.c
> > index 97e8678..b6bee451 100644
> > --- a/drivers/thermal/mtk_thermal.c
> > +++ b/drivers/thermal/mtk_thermal.c
> > @@ -245,6 +245,11 @@ enum mtk_thermal_version {
> >
> > struct mtk_thermal;
> >
> > +struct mtk_thermal_zone {
> > + struct mtk_thermal *mt;
> > + int id;
> > +};
>
> How does it differ from 'struct mtk_thermal_bank' ?
"truct mtk_thermal_zone" is duplicated. It will be removed next version
>
> > struct thermal_bank_cfg {
> > unsigned int num_sensors;
> > const int *sensors;
> > @@ -637,6 +642,30 @@ static void mtk_thermal_put_bank(struct
> > mtk_thermal_bank *bank)
> > mutex_unlock(&mt->lock);
> > }
> >
> > +static u32 _get_sensor_temp(struct mtk_thermal *mt, int id)
> > +{
> > + u32 raw;
> > + int temp;
> > +
> > + raw = readl(mt->thermal_base + mt->conf->msr[id]);
> > +
> > + if (mt->conf->version == MTK_THERMAL_V1)
> > + temp = raw_to_mcelsius_v1(mt, id, raw);
> > + else
> > + temp = raw_to_mcelsius_v2(mt, id, raw);
>
> Please add the proper conversion function as a callback and set it at
> probe time, instead of checking at every call.
>
Thanks for your advisement. V1 or V2 will be assigned to a function
pointer during probe.
> > + /*
> > + * The first read of a sensor often contains very high bogus
> > + * temperature value. Filter these out so that the system does
> > + * not immediately shut down.
> > + */
>
> If it happens only once, why not call this function at probe time so
> this test won't be needed.
>
It's exist in previous upstream version, and old chips should be
compatible. So we need to keep this filter to avoid wrong sensor
reading.
> > + if (temp > 200000)
> > + return -EAGAIN;
> > + else
> > + return temp;
> > +}
> > +
> > /**
> > * mtk_thermal_bank_temperature - get the temperature of a bank
> > * @bank: The bank
> > @@ -647,28 +676,11 @@ static void mtk_thermal_put_bank(struct
> > mtk_thermal_bank *bank)
> > static int mtk_thermal_bank_temperature(struct mtk_thermal_bank
> > *bank)
> > {
> > struct mtk_thermal *mt = bank->mt;
> > - const struct mtk_thermal_data *conf = mt->conf;
> > int i, temp = INT_MIN, max = INT_MIN;
> > - u32 raw;
> > -
> > - for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) {
> > - raw = readl(mt->thermal_base + conf->msr[i]);
> >
> > - if (mt->conf->version == MTK_THERMAL_V1) {
> > - temp = raw_to_mcelsius_v1(
> > - mt, conf->bank_data[bank-
> > >id].sensors[i], raw);
> > - } else {
> > - temp = raw_to_mcelsius_v2(
> > - mt, conf->bank_data[bank-
> > >id].sensors[i], raw);
> > - }
> > + for (i = 0; i < mt->conf->bank_data[bank->id].num_sensors; i++)
> > {
> >
> > - /*
> > - * The first read of a sensor often contains very high
> > bogus
> > - * temperature value. Filter these out so that the
> > system does
> > - * not immediately shut down.
> > - */
> > - if (temp > 200000)
> > - temp = 0;
> > + temp = _get_sensor_temp(mt, i);
> >
> > if (temp > max)
> > max = temp;
> > @@ -679,7 +691,8 @@ static int mtk_thermal_bank_temperature(struct
> > mtk_thermal_bank *bank)
> >
> > static int mtk_read_temp(void *data, int *temperature)
> > {
> > - struct mtk_thermal *mt = data;
> > + struct mtk_thermal_zone *tz = data;
> > + struct mtk_thermal *mt = tz->mt;
> > int i;
> > int tempmax = INT_MIN;
> >
> > @@ -698,10 +711,28 @@ static int mtk_read_temp(void *data, int
> > *temperature)
> > return 0;
> > }
> >
> > +static int mtk_read_sensor_temp(void *data, int *temperature)
> > +{
> > + struct mtk_thermal_zone *tz = data;
> > + struct mtk_thermal *mt = tz->mt;
> > + int id = tz->id - 1;
> > +
> > + if (id < 0)
> > + return -EACCES;
>
> How this can happen ?
>
tz->id > 0 is always true. It will be removed in next version.
> >
> > + *temperature = _get_sensor_temp(mt, id);
> > +
> > + return 0;
> > +}
> > +
> > static const struct thermal_zone_of_device_ops mtk_thermal_ops = {
> > .get_temp = mtk_read_temp,
> > };
> >
> > +static const struct thermal_zone_of_device_ops
> > mtk_thermal_sensor_ops = {
> > + .get_temp = mtk_read_sensor_temp,
> > +};
> > +
> > static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num,
> > u32 apmixed_phys_base, u32
> > auxadc_phys_base,
> > int ctrl_id)
> > @@ -992,6 +1023,7 @@ static int mtk_thermal_probe(struct
> > platform_device *pdev)
> > u64 auxadc_phys_base, apmixed_phys_base;
> > struct thermal_zone_device *tzdev;
> > void __iomem *apmixed_base, *auxadc_base;
> > + struct mtk_thermal_zone *tz;
> >
> > mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL);
> > if (!mt)
> > @@ -1080,11 +1112,29 @@ static int mtk_thermal_probe(struct
> > platform_device *pdev)
> >
> > platform_set_drvdata(pdev, mt);
> >
> > - tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, mt,
> > - &mtk_thermal_ops);
> > - if (IS_ERR(tzdev)) {
> > - ret = PTR_ERR(tzdev);
> > - goto err_disable_clk_peri_therm;
> > + for (i = 0; i < mt->conf->num_sensors + 1; i++) {
> > + tz = devm_kmalloc(&pdev->dev, sizeof(*tz), GFP_KERNEL);
> > + if (!tz)
> > + return -ENOMEM;
> > +
> > + tz->mt = mt;
> > + tz->id = i;
> > +
> > + tzdev = devm_thermal_zone_of_sensor_register(&pdev-
> > >dev, i, tz, (i == 0) ?
> > + &mtk_therm
> > al_ops :
> > + &mtk_therm
> > al_sensor_ops);
> > +
> > + if (IS_ERR(tzdev)) {
> > + if (PTR_ERR(tzdev) == -ENODEV) {
> > + dev_warn(&pdev->dev,
> > + "sensor %d not registered in
> > thermal zone in dt\n", i);
> > + continue;
> > + }
> > + if (PTR_ERR(tzdev) == -EACCES) {
> > + ret = PTR_ERR(tzdev);
> > + goto err_disable_clk_peri_therm;
> > + }
>
> If the error is none of the above, the loop continues. Is that what
> you
> want ?
Next version, As soon as thermal zone register fail, break and return.
> > + }
> > }
> >
> > return 0;
> >
>
>