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Merge branch 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

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Pull thermal management fixes from Zhang Rui:

 - fix a regression that thermal zone dynamically allocated sysfs
   attributes are freed before they're removed, which is introduced in
   4.10-rc1 (Jacob von Chorus)

 - fix a boot warning because deprecated hwmon API is used (Fabio
   Estevam)

 - a couple of fixes for rockchip thermal driver (Brian Norris, Caesar
   Wang)

* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: rockchip: fixes the conversion table
  thermal: core: move tz->device.groups cleanup to thermal_release
  thermal: thermal_hwmon: Convert to hwmon_device_register_with_info()
  thermal: rockchip: handle set_trips without the trip points
  thermal: rockchip: optimize the conversion table
  thermal: rockchip: fixes invalid temperature case
  thermal: rockchip: don't pass table structs by value
  thermal: rockchip: improve conversion error messages
This commit is contained in:
Linus Torvalds 2017-01-22 12:36:47 -08:00
commit bb6c01c2dd
3 changed files with 108 additions and 75 deletions
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153
drivers/thermal/rockchip_thermal.c
View File

@ -118,12 +118,12 @@ 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,
int chn, void __iomem *reg, int temp);
void (*set_tshut_temp)(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 */
@ -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[] = {
@ -397,59 +398,80 @@ 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;
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 */
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)
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;
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("Invalid the conversion, error=%d\n", error);
pr_err("%s: invalid temperature, temp=%d error=%d\n",
__func__, temp, error);
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;
@ -458,15 +480,15 @@ 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;
@ -475,7 +497,8 @@ 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;
}
/*
@ -484,10 +507,10 @@ 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;
}
@ -638,7 +661,7 @@ 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;
@ -648,39 +671,57 @@ 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,
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;
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);
if (alarm_value == table.data_mask)
return;
if (alarm_value == table->data_mask)
return -ERANGE;
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);
int_en |= TSADCV2_INT_SRC_EN(chn);
writel_relaxed(int_en, regs + TSADCV2_INT_EN);
return 0;
}
static void rk_tsadcv2_tshut_temp(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;
if (tshut_value == table->data_mask)
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,
@ -883,10 +924,8 @@ 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)
@ -896,7 +935,7 @@ 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);
@ -982,8 +1021,12 @@ 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;
@ -1196,9 +1239,13 @@ 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);

10
drivers/thermal/thermal_core.c
View File

@ -799,6 +799,11 @@ static void thermal_release(struct device *dev)
if (!strncmp(dev_name(dev), "thermal_zone",
sizeof("thermal_zone") - 1)) {
tz = to_thermal_zone(dev);
kfree(tz->trip_type_attrs);
kfree(tz->trip_temp_attrs);
kfree(tz->trip_hyst_attrs);
kfree(tz->trips_attribute_group.attrs);
kfree(tz->device.groups);
kfree(tz);
} else if (!strncmp(dev_name(dev), "cooling_device",
sizeof("cooling_device") - 1)) {
@ -1305,10 +1310,6 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz)
thermal_zone_device_set_polling(tz, 0);
kfree(tz->trip_type_attrs);
kfree(tz->trip_temp_attrs);
kfree(tz->trip_hyst_attrs);
kfree(tz->trips_attribute_group.attrs);
thermal_set_governor(tz, NULL);
thermal_remove_hwmon_sysfs(tz);
@ -1316,7 +1317,6 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz)
idr_destroy(&tz->idr);
mutex_destroy(&tz->lock);
device_unregister(&tz->device);
kfree(tz->device.groups);
}
EXPORT_SYMBOL_GPL(thermal_zone_device_unregister);

20
drivers/thermal/thermal_hwmon.c
View File

@ -58,14 +58,6 @@ static LIST_HEAD(thermal_hwmon_list);
static DEFINE_MUTEX(thermal_hwmon_list_lock);
static ssize_t
name_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", hwmon->type);
}
static DEVICE_ATTR_RO(name);
static ssize_t
temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
{
@ -165,15 +157,12 @@ int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
INIT_LIST_HEAD(&hwmon->tz_list);
strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
hwmon->device = hwmon_device_register(NULL);
hwmon->device = hwmon_device_register_with_info(NULL, hwmon->type,
hwmon, NULL, NULL);
if (IS_ERR(hwmon->device)) {
result = PTR_ERR(hwmon->device);
goto free_mem;
}
dev_set_drvdata(hwmon->device, hwmon);
result = device_create_file(hwmon->device, &dev_attr_name);
if (result)
goto free_mem;
register_sys_interface:
temp = kzalloc(sizeof(*temp), GFP_KERNEL);
@ -222,10 +211,8 @@ int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
free_temp_mem:
kfree(temp);
unregister_name:
if (new_hwmon_device) {
device_remove_file(hwmon->device, &dev_attr_name);
if (new_hwmon_device)
hwmon_device_unregister(hwmon->device);
}
free_mem:
if (new_hwmon_device)
kfree(hwmon);
@ -267,7 +254,6 @@ void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
list_del(&hwmon->node);
mutex_unlock(&thermal_hwmon_list_lock);
device_remove_file(hwmon->device, &dev_attr_name);
hwmon_device_unregister(hwmon->device);
kfree(hwmon);
}