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hwmon: (w83627ehf) Unify temperature register access, and use strict string conversions 

This patch unifies temperature register access, and replaces simple_strtoXXX
with strict_strtoXXX throughout the driver.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
This commit is contained in:
Guenter Roeck 2011-02-04 12:54:14 -08:00
parent 2d2e148a23
commit bce26c58df
1 changed files with 113 additions and 106 deletions
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219
drivers/hwmon/w83627ehf.c
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@ -164,13 +164,10 @@ static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
#define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
(0x550 + (nr) - 7))
#define W83627EHF_REG_TEMP1 0x27
#define W83627EHF_REG_TEMP1_HYST 0x3a
#define W83627EHF_REG_TEMP1_OVER 0x39
static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 };
static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 };
static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 };
static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
static const u16 W83627EHF_REG_TEMP[] = { 0x27, 0x150, 0x250 };
static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x3a, 0x153, 0x253 };
static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x39, 0x155, 0x255 };
static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252 };
/* Fan clock dividers are spread over the following five registers */
#define W83627EHF_REG_FANDIV1 0x47
@ -216,6 +213,15 @@ static const u8 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON[]
static const u8 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = { 0x67, 0x69, 0x6b };
static const u8 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[] = { 0x68, 0x6a, 0x6c };
static inline int is_word_sized(u16 reg)
{
return (((reg & 0xff00) == 0x100
|| (reg & 0xff00) == 0x200)
&& ((reg & 0x00ff) == 0x50
|| (reg & 0x00ff) == 0x53
|| (reg & 0x00ff) == 0x55));
}
/*
* Conversions
*/
@ -247,21 +253,19 @@ div_from_reg(u8 reg)
}
static inline int
temp1_from_reg(s8 reg)
temp_from_reg(u16 reg, s16 regval)
{
return reg * 1000;
if (is_word_sized(reg))
return LM75_TEMP_FROM_REG(regval);
return regval * 1000;
}
static inline s8
temp1_to_reg(long temp, int min, int max)
static inline s16
temp_to_reg(u16 reg, long temp)
{
if (temp <= min)
return min / 1000;
if (temp >= max)
return max / 1000;
if (temp < 0)
return (temp - 500) / 1000;
return (temp + 500) / 1000;
if (is_word_sized(reg))
return LM75_TEMP_TO_REG(temp);
return DIV_ROUND_CLOSEST(SENSORS_LIMIT(temp, -127000, 128000), 1000);
}
/* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
@ -308,12 +312,9 @@ struct w83627ehf_data {
u8 fan_div[5];
u8 has_fan; /* some fan inputs can be disabled */
u8 temp_type[3];
s8 temp1;
s8 temp1_max;
s8 temp1_max_hyst;
s16 temp[2];
s16 temp_max[2];
s16 temp_max_hyst[2];
s16 temp[3];
s16 temp_max[3];
s16 temp_max_hyst[3];
u32 alarms;
u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
@ -344,15 +345,6 @@ struct w83627ehf_sio_data {
enum kinds kind;
};
static inline int is_word_sized(u16 reg)
{
return (((reg & 0xff00) == 0x100
|| (reg & 0xff00) == 0x200)
&& ((reg & 0x00ff) == 0x50
|| (reg & 0x00ff) == 0x53
|| (reg & 0x00ff) == 0x55));
}
/* Registers 0x50-0x5f are banked */
static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg)
{
@ -586,13 +578,7 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
}
/* Measured temperatures and limits */
data->temp1 = w83627ehf_read_value(data,
W83627EHF_REG_TEMP1);
data->temp1_max = w83627ehf_read_value(data,
W83627EHF_REG_TEMP1_OVER);
data->temp1_max_hyst = w83627ehf_read_value(data,
W83627EHF_REG_TEMP1_HYST);
for (i = 0; i < 2; i++) {
for (i = 0; i < 3; i++) {
data->temp[i] = w83627ehf_read_value(data,
W83627EHF_REG_TEMP[i]);
data->temp_max[i] = w83627ehf_read_value(data,
@ -641,8 +627,11 @@ store_in_##reg (struct device *dev, struct device_attribute *attr, \
struct w83627ehf_data *data = dev_get_drvdata(dev); \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
u32 val = simple_strtoul(buf, NULL, 10); \
\
unsigned long val; \
int err; \
err = strict_strtoul(buf, 10, &val); \
if (err < 0) \
return err; \
mutex_lock(&data->update_lock); \
data->in_##reg[nr] = in_to_reg(val, nr); \
w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(nr), \
@ -746,10 +735,15 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
struct w83627ehf_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
unsigned int val = simple_strtoul(buf, NULL, 10);
unsigned long val;
int err;
unsigned int reg;
u8 new_div;
err = strict_strtoul(buf, 10, &val);
if (err < 0)
return err;
mutex_lock(&data->update_lock);
if (!val) {
/* No min limit, alarm disabled */
@ -761,14 +755,14 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
even with the highest divider (128) */
data->fan_min[nr] = 254;
new_div = 7; /* 128 == (1 << 7) */
dev_warn(dev, "fan%u low limit %u below minimum %u, set to "
dev_warn(dev, "fan%u low limit %lu below minimum %u, set to "
"minimum\n", nr + 1, val, fan_from_reg(254, 128));
} else if (!reg) {
/* Speed above this value cannot possibly be represented,
even with the lowest divider (1) */
data->fan_min[nr] = 1;
new_div = 0; /* 1 == (1 << 0) */
dev_warn(dev, "fan%u low limit %u above maximum %u, set to "
dev_warn(dev, "fan%u low limit %lu above maximum %u, set to "
"maximum\n", nr + 1, val, fan_from_reg(1, 1));
} else {
/* Automatically pick the best divider, i.e. the one such
@ -847,37 +841,7 @@ static struct sensor_device_attribute sda_fan_div[] = {
SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
};
#define show_temp1_reg(reg) \
static ssize_t \
show_##reg(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct w83627ehf_data *data = w83627ehf_update_device(dev); \
return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \
}
show_temp1_reg(temp1);
show_temp1_reg(temp1_max);
show_temp1_reg(temp1_max_hyst);
#define store_temp1_reg(REG, reg) \
static ssize_t \
store_temp1_##reg(struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct w83627ehf_data *data = dev_get_drvdata(dev); \
long val = simple_strtol(buf, NULL, 10); \
\
mutex_lock(&data->update_lock); \
data->temp1_##reg = temp1_to_reg(val, -128000, 127000); \
w83627ehf_write_value(data, W83627EHF_REG_TEMP1_##REG, \
data->temp1_##reg); \
mutex_unlock(&data->update_lock); \
return count; \
}
store_temp1_reg(OVER, max);
store_temp1_reg(HYST, max_hyst);
#define show_temp_reg(reg) \
#define show_temp_reg(REG, reg) \
static ssize_t \
show_##reg(struct device *dev, struct device_attribute *attr, \
char *buf) \
@ -886,11 +850,11 @@ show_##reg(struct device *dev, struct device_attribute *attr, \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
return sprintf(buf, "%d\n", \
LM75_TEMP_FROM_REG(data->reg[nr])); \
temp_from_reg(W83627EHF_REG_##REG[nr], data->reg[nr])); \
}
show_temp_reg(temp);
show_temp_reg(temp_max);
show_temp_reg(temp_max_hyst);
show_temp_reg(TEMP, temp);
show_temp_reg(TEMP_OVER, temp_max);
show_temp_reg(TEMP_HYST, temp_max_hyst);
#define store_temp_reg(REG, reg) \
static ssize_t \
@ -900,10 +864,13 @@ store_##reg(struct device *dev, struct device_attribute *attr, \
struct w83627ehf_data *data = dev_get_drvdata(dev); \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
long val = simple_strtol(buf, NULL, 10); \
\
int err; \
long val; \
err = strict_strtol(buf, 10, &val); \
if (err < 0) \
return err; \
mutex_lock(&data->update_lock); \
data->reg[nr] = LM75_TEMP_TO_REG(val); \
data->reg[nr] = temp_to_reg(W83627EHF_REG_TEMP_##REG[nr], val); \
w83627ehf_write_value(data, W83627EHF_REG_TEMP_##REG[nr], \
data->reg[nr]); \
mutex_unlock(&data->update_lock); \
@ -922,27 +889,27 @@ show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
}
static struct sensor_device_attribute sda_temp_input[] = {
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0),
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0),
SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1),
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
};
static struct sensor_device_attribute sda_temp_max[] = {
SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max,
store_temp1_max, 0),
SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_max,
store_temp_max, 0),
SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
store_temp_max, 1),
SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
store_temp_max, 2),
};
static struct sensor_device_attribute sda_temp_max_hyst[] = {
SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst,
store_temp1_max_hyst, 0),
SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
store_temp_max_hyst, 0),
SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
store_temp_max_hyst, 1),
SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
store_temp_max_hyst, 2),
};
static struct sensor_device_attribute sda_temp_alarm[] = {
@ -978,9 +945,14 @@ store_pwm_mode(struct device *dev, struct device_attribute *attr,
struct w83627ehf_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
u32 val = simple_strtoul(buf, NULL, 10);
unsigned long val;
int err;
u16 reg;
err = strict_strtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > 1)
return -EINVAL;
mutex_lock(&data->update_lock);
@ -1001,7 +973,14 @@ store_pwm(struct device *dev, struct device_attribute *attr,
struct w83627ehf_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255);
unsigned long val;
int err;
err = strict_strtoul(buf, 10, &val);
if (err < 0)
return err;
val = SENSORS_LIMIT(val, 0, 255);
mutex_lock(&data->update_lock);
data->pwm[nr] = val;
@ -1017,9 +996,14 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
struct w83627ehf_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
u32 val = simple_strtoul(buf, NULL, 10);
unsigned long val;
int err;
u16 reg;
err = strict_strtoul(buf, 10, &val);
if (err < 0)
return err;
if (!val || (val > 4))
return -EINVAL;
mutex_lock(&data->update_lock);
@ -1040,7 +1024,7 @@ static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
struct w83627ehf_data *data = w83627ehf_update_device(dev); \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
return sprintf(buf, "%d\n", temp1_from_reg(data->reg[nr])); \
return sprintf(buf, "%d\n", data->reg[nr] * 1000); \
}
show_tol_temp(tolerance)
@ -1053,7 +1037,14 @@ store_target_temp(struct device *dev, struct device_attribute *attr,
struct w83627ehf_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 127000);
long val;
int err;
err = strict_strtol(buf, 10, &val);
if (err < 0)
return err;
val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, 127);
mutex_lock(&data->update_lock);
data->target_temp[nr] = val;
@ -1070,8 +1061,15 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
u16 reg;
long val;
int err;
err = strict_strtol(buf, 10, &val);
if (err < 0)
return err;
/* Limit the temp to 0C - 15C */
u8 val = temp1_to_reg(simple_strtoul(buf, NULL, 10), 0, 15000);
val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
mutex_lock(&data->update_lock);
reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
@ -1154,7 +1152,12 @@ store_##reg(struct device *dev, struct device_attribute *attr, \
struct w83627ehf_data *data = dev_get_drvdata(dev); \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 1, 255); \
unsigned long val; \
int err; \
err = strict_strtoul(buf, 10, &val); \
if (err < 0) \
return err; \
val = SENSORS_LIMIT(val, 1, 255); \
mutex_lock(&data->update_lock); \
data->reg[nr] = val; \
w83627ehf_write_value(data, data->REG_##REG[nr], val); \
@ -1185,8 +1188,12 @@ store_##reg(struct device *dev, struct device_attribute *attr, \
struct w83627ehf_data *data = dev_get_drvdata(dev); \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
u8 val = step_time_to_reg(simple_strtoul(buf, NULL, 10), \
data->pwm_mode[nr]); \
unsigned long val; \
int err; \
err = strict_strtoul(buf, 10, &val); \
if (err < 0) \
return err; \
val = step_time_to_reg(val, data->pwm_mode[nr]); \
mutex_lock(&data->update_lock); \
data->reg[nr] = val; \
w83627ehf_write_value(data, W83627EHF_REG_##REG[nr], val); \
@ -1336,10 +1343,10 @@ static inline void __devinit w83627ehf_init_device(struct w83627ehf_data *data)
tmp | 0x01);
/* Enable temp2 and temp3 if needed */
for (i = 0; i < 2; i++) {
for (i = 1; i < 3; i++) {
tmp = w83627ehf_read_value(data,
W83627EHF_REG_TEMP_CONFIG[i]);
if ((i == 1) && data->temp3_disable)
if ((i == 2) && data->temp3_disable)
continue;
if (tmp & 0x01)
w83627ehf_write_value(data,
@ -1400,7 +1407,7 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
/* Check temp3 configuration bit for 667HG */
if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
data->temp3_disable = w83627ehf_read_value(data,
W83627EHF_REG_TEMP_CONFIG[1]) & 0x01;
W83627EHF_REG_TEMP_CONFIG[2]) & 0x01;
data->in6_skip = !data->temp3_disable;
}