2016-12-12 11:05:57

by Caesar Wang

[permalink] [raw]
Subject: [PATCH v4 0/5] thermal: fixes the rockchip thermal

There are five patches posted for upstream.
89267b5 thermal: rockchip: improve conversion error messages
a0b5649 thermal: rockchip: don't pass table structs by value
bceed92 thermal: rockchip: fixes invalid temperature case
30be6d0 thermal: rockchip: optimize the conversion table
35636e9 thermal: rockchip: handle the set_trips without the trip points.
--

History version:
V1:
https://lkml.org/lkml/2016/11/22/250
V2:
https://lkml.org/lkml/2016/11/23/348
V3:
http://www.mail-archive.com/[email protected]/msg1281432.html
---

Brain posted the below patches for upstream.
89267b5 thermal: rockchip: improve conversion error messages
a0b5649 thermal: rockchip: don't pass table structs by value
That make sense to improve efficiency

Caesar post the below patches for upstream.
bceed92 thermal: rockchip: fixes invalid temperature case
30be6d0 thermal: rockchip: optimize the conversion table
35636e9 thermal: rockchip: handle the set_trips without the trip points.
That will fixes some issues in special cases.
--

Anyway, this series patches should can improve the rockchip thermal driver.


Changes in v4:
- As Eduardo and Brian commnets on
https://patchwork.kernel.org/patch/9449301
- Print a better name.
- As Eduardo commented on https://patchwork.kernel.org/patch/9449313/
- remove the Brain's review for previous version, since the new version
update something.

Changes in v3:
- fix trivial thing for error message nd return value.
- change the commit.
- Fixes something as Brian comments on

Changes in v2:
- As Brian commnets that restructure this to pass error codes back to the
upper layers.
- Improve the commit message.
- improve the commit as Brian commnets on https://patchwork.kernel.org/patch/9440985
- Fixes something as Brian comments on
https://patchwork.kernel.org/patch/9440989.

Changes in v1:
- The original Brian posted on https://patchwork.kernel.org/patch/9437686
Note: it'd probably be even nicer to know which sensor this was, but we've
kinda abstracted that one away by this point...
- The original Brian posted on https://patchwork.kernel.org/patch/9437687

Brian Norris (2):
thermal: rockchip: improve conversion error messages
thermal: rockchip: don't pass table structs by value

Caesar Wang (3):
thermal: rockchip: fixes invalid temperature case
thermal: rockchip: optimize the conversion table
thermal: rockchip: handle set_trips without the trip points

drivers/thermal/rockchip_thermal.c | 153 ++++++++++++++++++++++++-------------
1 file changed, 100 insertions(+), 53 deletions(-)

--
2.7.4


2016-12-12 11:06:02

by Caesar Wang

[permalink] [raw]
Subject: [PATCH v4 1/5] thermal: rockchip: improve conversion error messages

From: Brian Norris <[email protected]>

These error messages don't give much information about what went wrong.
It would be nice, for one, to see what invalid temperature was being
requested when conversion fails. It's also good to return an error when
we can't handle a conversion properly.

While we're at it, fix the grammar too.

Signed-off-by: Brian Norris <[email protected]>
Signed-off-by: Caesar Wang <[email protected]>

---

Changes in v4:
- As Eduardo and Brian commnets on
https://patchwork.kernel.org/patch/9449301

Changes in v3: None
Changes in v2: None
Changes in v1:
- The original Brian posted on https://patchwork.kernel.org/patch/9437686
Note: it'd probably be even nicer to know which sensor this was, but we've
kinda abstracted that one away by this point...

drivers/thermal/rockchip_thermal.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index b811b0f..3bbc97c 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -424,7 +424,8 @@ static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
}

exit:
- pr_err("Invalid the conversion, error=%d\n", error);
+ pr_err("%s: invalid temperature, temp=%d error=%d\n",
+ __func__, temp, error);
return error;
}

@@ -475,7 +476,8 @@ static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
}
break;
default:
- pr_err("Invalid the conversion table\n");
+ pr_err("%s: unknown table mode: %d\n", __func__, table.mode);
+ return -EINVAL;
}

/*
--
2.7.4

2016-12-12 11:06:09

by Caesar Wang

[permalink] [raw]
Subject: [PATCH v4 3/5] thermal: rockchip: fixes invalid temperature case

The temp_to_code function will return 0 when we set the temperature to a
invalid value (e.g. 61C, 62C, 63C....), that's unpractical. This patch
will prevent this case happening. That will return the max analog value to
indicate the temperature is invalid or over table temperature range.

Signed-off-by: Caesar Wang <[email protected]>
---

Changes in v4: None
Changes in v3:
- fix trivial thing for error message nd return value.

Changes in v2:
- As Brian commnets that restructure this to pass error codes back to the
upper layers.
- Improve the commit message.

Changes in v1: None

drivers/thermal/rockchip_thermal.c | 48 ++++++++++++++++++++++----------------
1 file changed, 28 insertions(+), 20 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index 415e0ce..f027b86 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -120,10 +120,10 @@ struct rockchip_tsadc_chip {
/* Per-sensor methods */
int (*get_temp)(const struct chip_tsadc_table *table,
int chn, void __iomem *reg, int *temp);
- void (*set_alarm_temp)(const struct chip_tsadc_table *table,
- int chn, void __iomem *reg, int temp);
- void (*set_tshut_temp)(const struct chip_tsadc_table *table,
- int chn, void __iomem *reg, int temp);
+ int (*set_alarm_temp)(const struct chip_tsadc_table *table,
+ int chn, void __iomem *reg, int temp);
+ int (*set_tshut_temp)(const 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 */
@@ -401,17 +401,15 @@ static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
int temp)
{
int high, low, mid;
- u32 error = 0;
+ u32 error = table->data_mask;

low = 0;
high = table->length - 1;
mid = (high + low) / 2;

/* Return mask code data when the temp is over table range */
- if (temp < table->id[low].temp || temp > table->id[high].temp) {
- error = table->data_mask;
+ if (temp < table->id[low].temp || temp > table->id[high].temp)
goto exit;
- }

while (low <= high) {
if (temp == table->id[mid].temp)
@@ -650,15 +648,15 @@ static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
return rk_tsadcv2_code_to_temp(table, val, temp);
}

-static void rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
- int chn, void __iomem *regs, int temp)
+static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
+ int chn, void __iomem *regs, int temp)
{
u32 alarm_value, int_en;

/* Make sure the value is valid */
alarm_value = rk_tsadcv2_temp_to_code(table, temp);
if (alarm_value == table->data_mask)
- return;
+ return -ERANGE;

writel_relaxed(alarm_value & table->data_mask,
regs + TSADCV2_COMP_INT(chn));
@@ -666,23 +664,27 @@ static void rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
int_en = readl_relaxed(regs + TSADCV2_INT_EN);
int_en |= TSADCV2_INT_SRC_EN(chn);
writel_relaxed(int_en, regs + TSADCV2_INT_EN);
+
+ return 0;
}

-static void rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
- int chn, void __iomem *regs, int temp)
+static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
+ int chn, void __iomem *regs, int temp)
{
u32 tshut_value, val;

/* Make sure the value is valid */
tshut_value = rk_tsadcv2_temp_to_code(table, temp);
if (tshut_value == table->data_mask)
- return;
+ return -ERANGE;

writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));

/* TSHUT will be valid */
val = readl_relaxed(regs + TSADCV2_AUTO_CON);
writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON);
+
+ return 0;
}

static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
@@ -885,10 +887,8 @@ static int rockchip_thermal_set_trips(void *_sensor, int low, int high)
dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n",
__func__, sensor->id, low, high);

- tsadc->set_alarm_temp(&tsadc->table,
- sensor->id, thermal->regs, high);
-
- return 0;
+ return tsadc->set_alarm_temp(&tsadc->table,
+ sensor->id, thermal->regs, high);
}

static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
@@ -984,8 +984,12 @@ rockchip_thermal_register_sensor(struct platform_device *pdev,
int error;

tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
- tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs,
+
+ error = tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs,
thermal->tshut_temp);
+ if (error)
+ dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n",
+ __func__, thermal->tshut_temp, error);

sensor->thermal = thermal;
sensor->id = id;
@@ -1198,9 +1202,13 @@ static int __maybe_unused rockchip_thermal_resume(struct device *dev)

thermal->chip->set_tshut_mode(id, thermal->regs,
thermal->tshut_mode);
- thermal->chip->set_tshut_temp(&thermal->chip->table,
+
+ error = thermal->chip->set_tshut_temp(&thermal->chip->table,
id, thermal->regs,
thermal->tshut_temp);
+ if (error)
+ dev_err(&pdev->dev, "%s: invalid tshut=%d, error=%d\n",
+ __func__, thermal->tshut_temp, error);
}

thermal->chip->control(thermal->regs, true);
--
2.7.4

2016-12-12 11:06:06

by Caesar Wang

[permalink] [raw]
Subject: [PATCH v4 2/5] thermal: rockchip: don't pass table structs by value

From: Brian Norris <[email protected]>

This driver passes struct chip_tsadc_table by value throughout; this is
inefficient, and AFAICT, there is no reason for it. Let's pass pointers
instead.

Signed-off-by: Brian Norris <[email protected]>
Reviewed-by: Caesar Wang <[email protected]>
Signed-off-by: Caesar Wang <[email protected]>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None
Changes in v1:
- The original Brian posted on https://patchwork.kernel.org/patch/9437687

drivers/thermal/rockchip_thermal.c | 80 +++++++++++++++++++-------------------
1 file changed, 40 insertions(+), 40 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index 3bbc97c..415e0ce 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -118,11 +118,11 @@ struct rockchip_tsadc_chip {
void (*control)(void __iomem *reg, bool on);

/* Per-sensor methods */
- int (*get_temp)(struct chip_tsadc_table table,
+ int (*get_temp)(const struct chip_tsadc_table *table,
int chn, void __iomem *reg, int *temp);
- void (*set_alarm_temp)(struct chip_tsadc_table table,
+ void (*set_alarm_temp)(const struct chip_tsadc_table *table,
int chn, void __iomem *reg, int temp);
- void (*set_tshut_temp)(struct chip_tsadc_table table,
+ void (*set_tshut_temp)(const 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);

@@ -397,26 +397,26 @@ static const struct tsadc_table rk3399_code_table[] = {
{TSADCV3_DATA_MASK, 125000},
};

-static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
+static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
int temp)
{
int high, low, mid;
u32 error = 0;

low = 0;
- high = table.length - 1;
+ high = table->length - 1;
mid = (high + low) / 2;

/* Return mask code data when the temp is over table range */
- if (temp < table.id[low].temp || temp > table.id[high].temp) {
- error = table.data_mask;
+ if (temp < table->id[low].temp || temp > table->id[high].temp) {
+ error = table->data_mask;
goto exit;
}

while (low <= high) {
- if (temp == table.id[mid].temp)
- return table.id[mid].code;
- else if (temp < table.id[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;
@@ -429,28 +429,28 @@ static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
return error;
}

-static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
- int *temp)
+static int rk_tsadcv2_code_to_temp(const struct chip_tsadc_table *table,
+ u32 code, int *temp)
{
unsigned int low = 1;
- unsigned int high = table.length - 1;
+ unsigned int high = table->length - 1;
unsigned int mid = (low + high) / 2;
unsigned int num;
unsigned long denom;

- WARN_ON(table.length < 2);
+ WARN_ON(table->length < 2);

- switch (table.mode) {
+ switch (table->mode) {
case ADC_DECREMENT:
- code &= table.data_mask;
- if (code < table.id[high].code)
+ 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)
+ if (code >= table->id[mid].code &&
+ code < table->id[mid - 1].code)
break;
- else if (code < table.id[mid].code)
+ else if (code < table->id[mid].code)
low = mid + 1;
else
high = mid - 1;
@@ -459,15 +459,15 @@ static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
}
break;
case ADC_INCREMENT:
- code &= table.data_mask;
- if (code < table.id[low].code)
+ code &= table->data_mask;
+ if (code < table->id[low].code)
return -EAGAIN; /* Incorrect reading */

while (low <= high) {
- if (code <= table.id[mid].code &&
- code > table.id[mid - 1].code)
+ if (code <= table->id[mid].code &&
+ code > table->id[mid - 1].code)
break;
- else if (code > table.id[mid].code)
+ else if (code > table->id[mid].code)
low = mid + 1;
else
high = mid - 1;
@@ -476,7 +476,7 @@ static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
}
break;
default:
- pr_err("%s: unknown table mode: %d\n", __func__, table.mode);
+ pr_err("%s: unknown table mode: %d\n", __func__, table->mode);
return -EINVAL;
}

@@ -486,10 +486,10 @@ static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
* temperature between 2 table entries is linear and interpolate
* to produce less granular result.
*/
- num = table.id[mid].temp - table.id[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);
+ num = table->id[mid].temp - table->id[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;
}
@@ -640,7 +640,7 @@ static void rk_tsadcv3_control(void __iomem *regs, bool enable)
writel_relaxed(val, regs + TSADCV2_AUTO_CON);
}

-static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
+static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int *temp)
{
u32 val;
@@ -650,17 +650,17 @@ static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
return rk_tsadcv2_code_to_temp(table, val, temp);
}

-static void rk_tsadcv2_alarm_temp(struct chip_tsadc_table table,
+static void rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int temp)
{
u32 alarm_value, int_en;

/* Make sure the value is valid */
alarm_value = rk_tsadcv2_temp_to_code(table, temp);
- if (alarm_value == table.data_mask)
+ if (alarm_value == table->data_mask)
return;

- writel_relaxed(alarm_value & table.data_mask,
+ writel_relaxed(alarm_value & table->data_mask,
regs + TSADCV2_COMP_INT(chn));

int_en = readl_relaxed(regs + TSADCV2_INT_EN);
@@ -668,14 +668,14 @@ static void rk_tsadcv2_alarm_temp(struct chip_tsadc_table table,
writel_relaxed(int_en, regs + TSADCV2_INT_EN);
}

-static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
+static void rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int temp)
{
u32 tshut_value, val;

/* Make sure the value is valid */
tshut_value = rk_tsadcv2_temp_to_code(table, temp);
- if (tshut_value == table.data_mask)
+ if (tshut_value == table->data_mask)
return;

writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
@@ -885,7 +885,7 @@ static int rockchip_thermal_set_trips(void *_sensor, int low, int high)
dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n",
__func__, sensor->id, low, high);

- tsadc->set_alarm_temp(tsadc->table,
+ tsadc->set_alarm_temp(&tsadc->table,
sensor->id, thermal->regs, high);

return 0;
@@ -898,7 +898,7 @@ 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(tsadc->table,
+ 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);
@@ -984,7 +984,7 @@ rockchip_thermal_register_sensor(struct platform_device *pdev,
int error;

tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
- tsadc->set_tshut_temp(tsadc->table, id, thermal->regs,
+ tsadc->set_tshut_temp(&tsadc->table, id, thermal->regs,
thermal->tshut_temp);

sensor->thermal = thermal;
@@ -1198,7 +1198,7 @@ static int __maybe_unused rockchip_thermal_resume(struct device *dev)

thermal->chip->set_tshut_mode(id, thermal->regs,
thermal->tshut_mode);
- thermal->chip->set_tshut_temp(thermal->chip->table,
+ thermal->chip->set_tshut_temp(&thermal->chip->table,
id, thermal->regs,
thermal->tshut_temp);
}
--
2.7.4

2016-12-12 11:06:13

by Caesar Wang

[permalink] [raw]
Subject: [PATCH v4 4/5] thermal: rockchip: optimize the conversion table

In order to support the valid temperature can conver to analog value.
The rockchip thermal driver has not supported the all valid temperature
to convert the analog value. (e.g.: 61C, 62C, 63C....)

For example:
In some cases, we need adjust the trip point.
$cd /sys/class/thermal/thermal_zone*
$echo 68000 > trip_point_0_temp
That will return the max analogic value indicates the invalid before
posting this patch.

So, this patch will optimize the conversion table to support the other
cases.

Signed-off-by: Caesar Wang <[email protected]>
---

Changes in v4:
- Print a better name.
- As Eduardo commented on https://patchwork.kernel.org/patch/9449313/
- remove the Brain's review for previous version, since the new version
update something.

Changes in v3: None
Changes in v2:
- improve the commit as Brian commnets on https://patchwork.kernel.org/patch/9440985

Changes in v1: None

drivers/thermal/rockchip_thermal.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index f027b86..cacc12b 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -317,6 +317,7 @@ static const struct tsadc_table rk3288_code_table[] = {
{3452, 115000},
{3437, 120000},
{3421, 125000},
+ {0, 125000},
};

static const struct tsadc_table rk3368_code_table[] = {
@@ -401,10 +402,12 @@ static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
int temp)
{
int high, low, mid;
+ unsigned long num;
+ unsigned int denom;
u32 error = table->data_mask;

low = 0;
- high = table->length - 1;
+ high = (table->length - 1) - 1; /* ignore the last check for table */
mid = (high + low) / 2;

/* Return mask code data when the temp is over table range */
@@ -421,6 +424,26 @@ static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
mid = (low + high) / 2;
}

+ /*
+ * The conversion code granularity provided by the table. Let's
+ * assume that the relationship between temperature and
+ * analog value between 2 table entries is linear and interpolate
+ * to produce less granular result.
+ */
+ num = abs(table->id[mid + 1].code - table->id[mid].code);
+ num *= temp - table->id[mid].temp;
+ denom = table->id[mid + 1].temp - table->id[mid].temp;
+
+ switch (table->mode) {
+ case ADC_DECREMENT:
+ return table->id[mid].code - (num / denom);
+ case ADC_INCREMENT:
+ return table->id[mid].code + (num / denom);
+ default:
+ pr_err("%s: unknown table mode: %d\n", __func__, table->mode);
+ return error;
+ }
+
exit:
pr_err("%s: invalid temperature, temp=%d error=%d\n",
__func__, temp, error);
--
2.7.4

2016-12-12 11:06:16

by Caesar Wang

[permalink] [raw]
Subject: [PATCH v4 5/5] thermal: rockchip: handle set_trips without the trip points

In some cases, some sensors didn't need the trip points, the
set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm in the end,
ignore this case and disable the high temperature interrupt.

Signed-off-by: Caesar Wang <[email protected]>
Reviewed-by: Brian Norris <[email protected]>
---

Changes in v4: None
Changes in v3:
- change the commit.
- Fixes something as Brian comments on

Changes in v2:
- Fixes something as Brian comments on
https://patchwork.kernel.org/patch/9440989.

Changes in v1: None

drivers/thermal/rockchip_thermal.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index cacc12b..cbbf0ce 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -674,7 +674,21 @@ static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int temp)
{
- u32 alarm_value, int_en;
+ u32 alarm_value;
+ u32 int_en, int_clr;
+
+ /*
+ * In some cases, some sensors didn't need the trip points, the
+ * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm
+ * in the end, ignore this case and disable the high temperature
+ * interrupt.
+ */
+ if (temp == INT_MAX) {
+ int_clr = readl_relaxed(regs + TSADCV2_INT_EN);
+ int_clr &= ~TSADCV2_INT_SRC_EN(chn);
+ writel_relaxed(int_clr, regs + TSADCV2_INT_EN);
+ return 0;
+ }

/* Make sure the value is valid */
alarm_value = rk_tsadcv2_temp_to_code(table, temp);
--
2.7.4

2016-12-30 16:11:32

by Randy Li

[permalink] [raw]
Subject: Re: [PATCH v4 0/5] thermal: fixes the rockchip thermal


BTW, Caesar have you ever met this at RK3288 at booting time?
[ 8.430582] thermal thermal_zone1: critical temperature reached(125
C),shutting down
[ 8.439038] thermal thermal_zone2: critical temperature reached(125
C),shutting down
[ 8.456344] thermal thermal_zone1: critical temperature reached(125
C),shutting down
[ 8.465298] thermal thermal_zone2: critical temperature reached(125
C),shutting down

On 12/12/2016 07:05 PM, Caesar Wang wrote:
> There are five patches posted for upstream.
> 89267b5 thermal: rockchip: improve conversion error messages
> a0b5649 thermal: rockchip: don't pass table structs by value
> bceed92 thermal: rockchip: fixes invalid temperature case
> 30be6d0 thermal: rockchip: optimize the conversion table
> 35636e9 thermal: rockchip: handle the set_trips without the trip points.
> --
>
> History version:
> V1:
> https://lkml.org/lkml/2016/11/22/250
> V2:
> https://lkml.org/lkml/2016/11/23/348
> V3:
> http://www.mail-archive.com/[email protected]/msg1281432.html
> ---
>
> Brain posted the below patches for upstream.
> 89267b5 thermal: rockchip: improve conversion error messages
> a0b5649 thermal: rockchip: don't pass table structs by value
> That make sense to improve efficiency
>
> Caesar post the below patches for upstream.
> bceed92 thermal: rockchip: fixes invalid temperature case
> 30be6d0 thermal: rockchip: optimize the conversion table
> 35636e9 thermal: rockchip: handle the set_trips without the trip points.
> That will fixes some issues in special cases.
> --
>
> Anyway, this series patches should can improve the rockchip thermal driver.
>
>
> Changes in v4:
> - As Eduardo and Brian commnets on
> https://patchwork.kernel.org/patch/9449301
> - Print a better name.
> - As Eduardo commented on https://patchwork.kernel.org/patch/9449313/
> - remove the Brain's review for previous version, since the new version
> update something.
>
> Changes in v3:
> - fix trivial thing for error message nd return value.
> - change the commit.
> - Fixes something as Brian comments on
>
> Changes in v2:
> - As Brian commnets that restructure this to pass error codes back to the
> upper layers.
> - Improve the commit message.
> - improve the commit as Brian commnets on https://patchwork.kernel.org/patch/9440985
> - Fixes something as Brian comments on
> https://patchwork.kernel.org/patch/9440989.
>
> Changes in v1:
> - The original Brian posted on https://patchwork.kernel.org/patch/9437686
> Note: it'd probably be even nicer to know which sensor this was, but we've
> kinda abstracted that one away by this point...
> - The original Brian posted on https://patchwork.kernel.org/patch/9437687
>
> Brian Norris (2):
> thermal: rockchip: improve conversion error messages
> thermal: rockchip: don't pass table structs by value
>
> Caesar Wang (3):
> thermal: rockchip: fixes invalid temperature case
> thermal: rockchip: optimize the conversion table
> thermal: rockchip: handle set_trips without the trip points
>
> drivers/thermal/rockchip_thermal.c | 153 ++++++++++++++++++++++++-------------
> 1 file changed, 100 insertions(+), 53 deletions(-)
>