hwmon/w83627hf: Add PWM frequency selection support
Signed-off-by: Carlos Olalla <com.ea@tinet.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>hifive-unleashed-5.1
Carlos Olalla Martinez
Mark M. Hoffman
parent
08a8f6e9e6
commit
1550cb6d7e
|
|
@ -220,6 +220,18 @@ static const u8 regpwm[] = { W83627THF_REG_PWM1, W83627THF_REG_PWM2,
|
|||
#define W836X7HF_REG_PWM(type, nr) (((type) == w83627hf) ? \
|
||||
regpwm_627hf[(nr) - 1] : regpwm[(nr) - 1])
|
||||
|
||||
#define W83627HF_REG_PWM_FREQ 0x5C /* Only for the 627HF */
|
||||
|
||||
#define W83637HF_REG_PWM_FREQ1 0x00 /* 697HF/687THF too */
|
||||
#define W83637HF_REG_PWM_FREQ2 0x02 /* 697HF/687THF too */
|
||||
#define W83637HF_REG_PWM_FREQ3 0x10 /* 687THF too */
|
||||
|
||||
static const u8 W83637HF_REG_PWM_FREQ[] = { W83637HF_REG_PWM_FREQ1,
|
||||
W83637HF_REG_PWM_FREQ2,
|
||||
W83637HF_REG_PWM_FREQ3 };
|
||||
|
||||
#define W83627HF_BASE_PWM_FREQ 46870
|
||||
|
||||
#define W83781D_REG_I2C_ADDR 0x48
|
||||
#define W83781D_REG_I2C_SUBADDR 0x4A
|
||||
|
||||
|
|
@ -267,6 +279,49 @@ static int TEMP_FROM_REG(u8 reg)
|
|||
|
||||
#define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))
|
||||
|
||||
static inline unsigned long pwm_freq_from_reg_627hf(u8 reg)
|
||||
{
|
||||
unsigned long freq;
|
||||
freq = W83627HF_BASE_PWM_FREQ >> reg;
|
||||
return freq;
|
||||
}
|
||||
static inline u8 pwm_freq_to_reg_627hf(unsigned long val)
|
||||
{
|
||||
u8 i;
|
||||
/* Only 5 dividers (1 2 4 8 16)
|
||||
Search for the nearest available frequency */
|
||||
for (i = 0; i < 4; i++) {
|
||||
if (val > (((W83627HF_BASE_PWM_FREQ >> i) +
|
||||
(W83627HF_BASE_PWM_FREQ >> (i+1))) / 2))
|
||||
break;
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
static inline unsigned long pwm_freq_from_reg(u8 reg)
|
||||
{
|
||||
/* Clock bit 8 -> 180 kHz or 24 MHz */
|
||||
unsigned long clock = (reg & 0x80) ? 180000UL : 24000000UL;
|
||||
|
||||
reg &= 0x7f;
|
||||
/* This should not happen but anyway... */
|
||||
if (reg == 0)
|
||||
reg++;
|
||||
return (clock / (reg << 8));
|
||||
}
|
||||
static inline u8 pwm_freq_to_reg(unsigned long val)
|
||||
{
|
||||
/* Minimum divider value is 0x01 and maximum is 0x7F */
|
||||
if (val >= 93750) /* The highest we can do */
|
||||
return 0x01;
|
||||
if (val >= 720) /* Use 24 MHz clock */
|
||||
return (24000000UL / (val << 8));
|
||||
if (val < 6) /* The lowest we can do */
|
||||
return 0xFF;
|
||||
else /* Use 180 kHz clock */
|
||||
return (0x80 | (180000UL / (val << 8)));
|
||||
}
|
||||
|
||||
#define BEEP_MASK_FROM_REG(val) (val)
|
||||
#define BEEP_MASK_TO_REG(val) ((val) & 0xffffff)
|
||||
#define BEEP_ENABLE_TO_REG(val) ((val)?1:0)
|
||||
|
|
@ -316,6 +371,7 @@ struct w83627hf_data {
|
|||
u32 beep_mask; /* Register encoding, combined */
|
||||
u8 beep_enable; /* Boolean */
|
||||
u8 pwm[3]; /* Register value */
|
||||
u8 pwm_freq[3]; /* Register value */
|
||||
u16 sens[3]; /* 782D/783S only.
|
||||
1 = pentium diode; 2 = 3904 diode;
|
||||
3000-5000 = thermistor beta.
|
||||
|
|
@ -851,6 +907,64 @@ sysfs_pwm(1);
|
|||
sysfs_pwm(2);
|
||||
sysfs_pwm(3);
|
||||
|
||||
static ssize_t
|
||||
show_pwm_freq_reg(struct device *dev, char *buf, int nr)
|
||||
{
|
||||
struct w83627hf_data *data = w83627hf_update_device(dev);
|
||||
if (data->type == w83627hf)
|
||||
return sprintf(buf, "%ld\n",
|
||||
pwm_freq_from_reg_627hf(data->pwm_freq[nr - 1]));
|
||||
else
|
||||
return sprintf(buf, "%ld\n",
|
||||
pwm_freq_from_reg(data->pwm_freq[nr - 1]));
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
store_pwm_freq_reg(struct device *dev, const char *buf, size_t count, int nr)
|
||||
{
|
||||
struct w83627hf_data *data = dev_get_drvdata(dev);
|
||||
static const u8 mask[]={0xF8, 0x8F};
|
||||
u32 val;
|
||||
|
||||
val = simple_strtoul(buf, NULL, 10);
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
|
||||
if (data->type == w83627hf) {
|
||||
data->pwm_freq[nr - 1] = pwm_freq_to_reg_627hf(val);
|
||||
w83627hf_write_value(data, W83627HF_REG_PWM_FREQ,
|
||||
(data->pwm_freq[nr - 1] << ((nr - 1)*4)) |
|
||||
(w83627hf_read_value(data,
|
||||
W83627HF_REG_PWM_FREQ) & mask[nr - 1]));
|
||||
} else {
|
||||
data->pwm_freq[nr - 1] = pwm_freq_to_reg(val);
|
||||
w83627hf_write_value(data, W83637HF_REG_PWM_FREQ[nr - 1],
|
||||
data->pwm_freq[nr - 1]);
|
||||
}
|
||||
|
||||
mutex_unlock(&data->update_lock);
|
||||
return count;
|
||||
}
|
||||
|
||||
#define sysfs_pwm_freq(offset) \
|
||||
static ssize_t show_regs_pwm_freq_##offset(struct device *dev, \
|
||||
struct device_attribute *attr, char *buf) \
|
||||
{ \
|
||||
return show_pwm_freq_reg(dev, buf, offset); \
|
||||
} \
|
||||
static ssize_t \
|
||||
store_regs_pwm_freq_##offset(struct device *dev, \
|
||||
struct device_attribute *attr, const char *buf, size_t count) \
|
||||
{ \
|
||||
return store_pwm_freq_reg(dev, buf, count, offset); \
|
||||
} \
|
||||
static DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
|
||||
show_regs_pwm_freq_##offset, store_regs_pwm_freq_##offset);
|
||||
|
||||
sysfs_pwm_freq(1);
|
||||
sysfs_pwm_freq(2);
|
||||
sysfs_pwm_freq(3);
|
||||
|
||||
static ssize_t
|
||||
show_sensor_reg(struct device *dev, char *buf, int nr)
|
||||
{
|
||||
|
|
@ -1077,6 +1191,9 @@ static struct attribute *w83627hf_attributes_opt[] = {
|
|||
|
||||
&dev_attr_pwm3.attr,
|
||||
|
||||
&dev_attr_pwm1_freq.attr,
|
||||
&dev_attr_pwm2_freq.attr,
|
||||
&dev_attr_pwm3_freq.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
|
|
@ -1139,7 +1256,9 @@ static int __devinit w83627hf_probe(struct platform_device *pdev)
|
|||
|| (err = device_create_file(dev, &dev_attr_in5_max))
|
||||
|| (err = device_create_file(dev, &dev_attr_in6_input))
|
||||
|| (err = device_create_file(dev, &dev_attr_in6_min))
|
||||
|| (err = device_create_file(dev, &dev_attr_in6_max)))
|
||||
|| (err = device_create_file(dev, &dev_attr_in6_max))
|
||||
|| (err = device_create_file(dev, &dev_attr_pwm1_freq))
|
||||
|| (err = device_create_file(dev, &dev_attr_pwm2_freq)))
|
||||
goto ERROR4;
|
||||
|
||||
if (data->type != w83697hf)
|
||||
|
|
@ -1169,6 +1288,12 @@ static int __devinit w83627hf_probe(struct platform_device *pdev)
|
|||
if ((err = device_create_file(dev, &dev_attr_pwm3)))
|
||||
goto ERROR4;
|
||||
|
||||
if (data->type == w83637hf || data->type == w83687thf)
|
||||
if ((err = device_create_file(dev, &dev_attr_pwm1_freq))
|
||||
|| (err = device_create_file(dev, &dev_attr_pwm2_freq))
|
||||
|| (err = device_create_file(dev, &dev_attr_pwm3_freq)))
|
||||
goto ERROR4;
|
||||
|
||||
data->class_dev = hwmon_device_register(dev);
|
||||
if (IS_ERR(data->class_dev)) {
|
||||
err = PTR_ERR(data->class_dev);
|
||||
|
|
@ -1472,6 +1597,20 @@ static struct w83627hf_data *w83627hf_update_device(struct device *dev)
|
|||
(data->type == w83627hf || data->type == w83697hf))
|
||||
break;
|
||||
}
|
||||
if (data->type == w83627hf) {
|
||||
u8 tmp = w83627hf_read_value(data,
|
||||
W83627HF_REG_PWM_FREQ);
|
||||
data->pwm_freq[0] = tmp & 0x07;
|
||||
data->pwm_freq[1] = (tmp >> 4) & 0x07;
|
||||
} else if (data->type != w83627thf) {
|
||||
for (i = 1; i <= 3; i++) {
|
||||
data->pwm_freq[i - 1] =
|
||||
w83627hf_read_value(data,
|
||||
W83637HF_REG_PWM_FREQ[i - 1]);
|
||||
if (i == 2 && (data->type == w83697hf))
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
data->temp = w83627hf_read_value(data, W83781D_REG_TEMP(1));
|
||||
data->temp_max =
|
||||
|
|
|
|||
Loading…
Reference in New Issue