@@ -58,6 +58,7 @@
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/acpi.h>
+#include <linux/bitops.h>
#include <linux/dmi.h>
#include <linux/io.h>
#include "lm75.h"
@@ -810,7 +811,7 @@ static u16 fan_to_reg(u32 fan, unsigned int divreg)
static inline unsigned int
div_from_reg(u8 reg)
{
- return 1 << reg;
+ return BIT(reg);
}
/*
@@ -1276,7 +1277,7 @@ static void nct6775_update_fan_div(struct nct6775_data *data)
data->fan_div[1] = (i & 0x70) >> 4;
i = nct6775_read_value(data, NCT6775_REG_FANDIV2);
data->fan_div[2] = i & 0x7;
- if (data->has_fan & (1 << 3))
+ if (data->has_fan & BIT(3))
data->fan_div[3] = (i & 0x70) >> 4;
}
@@ -1298,7 +1299,7 @@ static void nct6775_init_fan_div(struct nct6775_data *data)
* We'll compute a better divider later on.
*/
for (i = 0; i < ARRAY_SIZE(data->fan_div); i++) {
- if (!(data->has_fan & (1 << i)))
+ if (!(data->has_fan & BIT(i)))
continue;
if (data->fan_div[i] == 0) {
data->fan_div[i] = 7;
@@ -1321,7 +1322,7 @@ static void nct6775_init_fan_common(struct device *dev,
* prevents the unnecessary warning when fanX_min is reported as 0.
*/
for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
- if (data->has_fan_min & (1 << i)) {
+ if (data->has_fan_min & BIT(i)) {
reg = nct6775_read_value(data, data->REG_FAN_MIN[i]);
if (!reg)
nct6775_write_value(data, data->REG_FAN_MIN[i],
@@ -1356,7 +1357,7 @@ static void nct6775_select_fan_div(struct device *dev,
div_from_reg(fan_div));
/* Preserve min limit if possible */
- if (data->has_fan_min & (1 << nr)) {
+ if (data->has_fan_min & BIT(nr)) {
fan_min = data->fan_min[nr];
if (fan_div > data->fan_div[nr]) {
if (fan_min != 255 && fan_min > 1)
@@ -1387,7 +1388,7 @@ static void nct6775_update_pwm(struct device *dev)
bool duty_is_dc;
for (i = 0; i < data->pwm_num; i++) {
- if (!(data->has_pwm & (1 << i)))
+ if (!(data->has_pwm & BIT(i)))
continue;
duty_is_dc = data->REG_PWM_MODE[i] &&
@@ -1457,7 +1458,7 @@ static void nct6775_update_pwm_limits(struct device *dev)
u16 reg_t;
for (i = 0; i < data->pwm_num; i++) {
- if (!(data->has_pwm & (1 << i)))
+ if (!(data->has_pwm & BIT(i)))
continue;
for (j = 0; j < ARRAY_SIZE(data->fan_time); j++) {
@@ -1534,7 +1535,7 @@ static struct nct6775_data *nct6775_update_device(struct device *dev)
/* Measured voltages and limits */
for (i = 0; i < data->in_num; i++) {
- if (!(data->have_in & (1 << i)))
+ if (!(data->have_in & BIT(i)))
continue;
data->in[i][0] = nct6775_read_value(data,
@@ -1549,14 +1550,14 @@ static struct nct6775_data *nct6775_update_device(struct device *dev)
for (i = 0; i < ARRAY_SIZE(data->rpm); i++) {
u16 reg;
- if (!(data->has_fan & (1 << i)))
+ if (!(data->has_fan & BIT(i)))
continue;
reg = nct6775_read_value(data, data->REG_FAN[i]);
data->rpm[i] = data->fan_from_reg(reg,
data->fan_div[i]);
- if (data->has_fan_min & (1 << i))
+ if (data->has_fan_min & BIT(i))
data->fan_min[i] = nct6775_read_value(data,
data->REG_FAN_MIN[i]);
data->fan_pulses[i] =
@@ -1571,7 +1572,7 @@ static struct nct6775_data *nct6775_update_device(struct device *dev)
/* Measured temperatures and limits */
for (i = 0; i < NUM_TEMP; i++) {
- if (!(data->have_temp & (1 << i)))
+ if (!(data->have_temp & BIT(i)))
continue;
for (j = 0; j < ARRAY_SIZE(data->reg_temp); j++) {
if (data->reg_temp[j][i])
@@ -1580,7 +1581,7 @@ static struct nct6775_data *nct6775_update_device(struct device *dev)
data->reg_temp[j][i]);
}
if (i >= NUM_TEMP_FIXED ||
- !(data->have_temp_fixed & (1 << i)))
+ !(data->have_temp_fixed & BIT(i)))
continue;
data->temp_offset[i]
= nct6775_read_value(data, data->REG_TEMP_OFFSET[i]);
@@ -1801,7 +1802,7 @@ static umode_t nct6775_in_is_visible(struct kobject *kobj,
struct nct6775_data *data = dev_get_drvdata(dev);
int in = index / 5; /* voltage index */
- if (!(data->have_in & (1 << in)))
+ if (!(data->have_in & BIT(in)))
return 0;
return attr->mode;
@@ -1911,7 +1912,7 @@ 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) */
+ new_div = 7; /* 128 == BIT(7) */
dev_warn(dev,
"fan%u low limit %lu below minimum %u, set to minimum\n",
nr + 1, val, data->fan_from_reg_min(254, 7));
@@ -1921,7 +1922,7 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
* even with the lowest divider (1)
*/
data->fan_min[nr] = 1;
- new_div = 0; /* 1 == (1 << 0) */
+ new_div = 0; /* 1 == BIT(0) */
dev_warn(dev,
"fan%u low limit %lu above maximum %u, set to maximum\n",
nr + 1, val, data->fan_from_reg_min(1, 0));
@@ -2008,14 +2009,14 @@ static umode_t nct6775_fan_is_visible(struct kobject *kobj,
int fan = index / 6; /* fan index */
int nr = index % 6; /* attribute index */
- if (!(data->has_fan & (1 << fan)))
+ if (!(data->has_fan & BIT(fan)))
return 0;
if (nr == 1 && data->ALARM_BITS[FAN_ALARM_BASE + fan] == -1)
return 0;
if (nr == 2 && data->BEEP_BITS[FAN_ALARM_BASE + fan] == -1)
return 0;
- if (nr == 4 && !(data->has_fan_min & (1 << fan)))
+ if (nr == 4 && !(data->has_fan_min & BIT(fan)))
return 0;
if (nr == 5 && data->kind != nct6775)
return 0;
@@ -2193,7 +2194,7 @@ static umode_t nct6775_temp_is_visible(struct kobject *kobj,
int temp = index / 10; /* temp index */
int nr = index % 10; /* attribute index */
- if (!(data->have_temp & (1 << temp)))
+ if (!(data->have_temp & BIT(temp)))
return 0;
if (nr == 2 && find_temp_source(data, temp, data->num_temp_alarms) < 0)
@@ -2215,7 +2216,7 @@ static umode_t nct6775_temp_is_visible(struct kobject *kobj,
return 0;
/* offset and type only apply to fixed sensors */
- if (nr > 7 && !(data->have_temp_fixed & (1 << temp)))
+ if (nr > 7 && !(data->have_temp_fixed & BIT(temp)))
return 0;
return attr->mode;
@@ -2484,7 +2485,7 @@ show_pwm_temp_sel_common(struct nct6775_data *data, char *buf, int src)
int i, sel = 0;
for (i = 0; i < NUM_TEMP; i++) {
- if (!(data->have_temp & (1 << i)))
+ if (!(data->have_temp & BIT(i)))
continue;
if (src == data->temp_src[i]) {
sel = i + 1;
@@ -2520,7 +2521,7 @@ store_pwm_temp_sel(struct device *dev, struct device_attribute *attr,
return err;
if (val == 0 || val > NUM_TEMP)
return -EINVAL;
- if (!(data->have_temp & (1 << (val - 1))) || !data->temp_src[val - 1])
+ if (!(data->have_temp & BIT(val - 1)) || !data->temp_src[val - 1])
return -EINVAL;
mutex_lock(&data->update_lock);
@@ -2562,7 +2563,7 @@ store_pwm_weight_temp_sel(struct device *dev, struct device_attribute *attr,
return err;
if (val > NUM_TEMP)
return -EINVAL;
- if (val && (!(data->have_temp & (1 << (val - 1))) ||
+ if (val && (!(data->have_temp & BIT(val - 1)) ||
!data->temp_src[val - 1]))
return -EINVAL;
@@ -2995,7 +2996,7 @@ static umode_t nct6775_pwm_is_visible(struct kobject *kobj,
int pwm = index / 36; /* pwm index */
int nr = index % 36; /* attribute index */
- if (!(data->has_pwm & (1 << pwm)))
+ if (!(data->has_pwm & BIT(pwm)))
return 0;
if ((nr >= 14 && nr <= 18) || nr == 21) /* weight */
@@ -3246,7 +3247,7 @@ static inline void nct6775_init_device(struct nct6775_data *data)
/* Enable temperature sensors if needed */
for (i = 0; i < NUM_TEMP; i++) {
- if (!(data->have_temp & (1 << i)))
+ if (!(data->have_temp & BIT(i)))
continue;
if (!data->reg_temp_config[i])
continue;
@@ -3264,7 +3265,7 @@ static inline void nct6775_init_device(struct nct6775_data *data)
diode = nct6775_read_value(data, data->REG_DIODE);
for (i = 0; i < data->temp_fixed_num; i++) {
- if (!(data->have_temp_fixed & (1 << i)))
+ if (!(data->have_temp_fixed & BIT(i)))
continue;
if ((tmp & (data->DIODE_MASK << i))) /* diode */
data->temp_type[i]
@@ -3290,8 +3291,8 @@ nct6775_check_fan_inputs(struct nct6775_data *data)
if (data->kind == nct6775) {
regval = superio_inb(sioreg, 0x2c);
- fan3pin = regval & (1 << 6);
- pwm3pin = regval & (1 << 7);
+ fan3pin = regval & BIT(6);
+ pwm3pin = regval & BIT(7);
/* On NCT6775, fan4 shares pins with the fdc interface */
fan4pin = !(superio_inb(sioreg, 0x2A) & 0x80);
@@ -3360,21 +3361,21 @@ nct6775_check_fan_inputs(struct nct6775_data *data)
} else { /* NCT6779D, NCT6791D, NCT6792D, or NCT6793D */
regval = superio_inb(sioreg, 0x1c);
- fan3pin = !(regval & (1 << 5));
- fan4pin = !(regval & (1 << 6));
- fan5pin = !(regval & (1 << 7));
+ fan3pin = !(regval & BIT(5));
+ fan4pin = !(regval & BIT(6));
+ fan5pin = !(regval & BIT(7));
- pwm3pin = !(regval & (1 << 0));
- pwm4pin = !(regval & (1 << 1));
- pwm5pin = !(regval & (1 << 2));
+ pwm3pin = !(regval & BIT(0));
+ pwm4pin = !(regval & BIT(1));
+ pwm5pin = !(regval & BIT(2));
fan4min = fan4pin;
if (data->kind == nct6791 || data->kind == nct6792 ||
data->kind == nct6793) {
regval = superio_inb(sioreg, 0x2d);
- fan6pin = (regval & (1 << 1));
- pwm6pin = (regval & (1 << 0));
+ fan6pin = (regval & BIT(1));
+ pwm6pin = (regval & BIT(0));
} else { /* NCT6779D */
fan6pin = false;
pwm6pin = false;
@@ -3403,7 +3404,7 @@ static void add_temp_sensors(struct nct6775_data *data, const u16 *regp,
continue;
src = nct6775_read_value(data, regp[i]);
src &= 0x1f;
- if (!src || (*mask & (1 << src)))
+ if (!src || (*mask & BIT(src)))
continue;
if (src >= data->temp_label_num ||
!strlen(data->temp_label[src]))
@@ -3411,8 +3412,8 @@ static void add_temp_sensors(struct nct6775_data *data, const u16 *regp,
index = __ffs(*available);
nct6775_write_value(data, data->REG_TEMP_SOURCE[index], src);
- *available &= ~(1 << index);
- *mask |= 1 << src;
+ *available &= ~BIT(index);
+ *mask |= BIT(src);
}
}
@@ -3843,7 +3844,7 @@ static int nct6775_probe(struct platform_device *pdev)
default:
return -ENODEV;
}
- data->have_in = (1 << data->in_num) - 1;
+ data->have_in = BIT(data->in_num) - 1;
data->have_temp = 0;
/*
@@ -3861,10 +3862,10 @@ static int nct6775_probe(struct platform_device *pdev)
continue;
src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
- if (!src || (mask & (1 << src)))
- available |= 1 << i;
+ if (!src || (mask & BIT(src)))
+ available |= BIT(i);
- mask |= 1 << src;
+ mask |= BIT(src);
}
/*
@@ -3881,7 +3882,7 @@ static int nct6775_probe(struct platform_device *pdev)
continue;
src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
- if (!src || (mask & (1 << src)))
+ if (!src || (mask & BIT(src)))
continue;
if (src >= data->temp_label_num ||
@@ -3892,12 +3893,12 @@ static int nct6775_probe(struct platform_device *pdev)
continue;
}
- mask |= 1 << src;
+ mask |= BIT(src);
/* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
if (src <= data->temp_fixed_num) {
- data->have_temp |= 1 << (src - 1);
- data->have_temp_fixed |= 1 << (src - 1);
+ data->have_temp |= BIT(src - 1);
+ data->have_temp_fixed |= BIT(src - 1);
data->reg_temp[0][src - 1] = reg_temp[i];
data->reg_temp[1][src - 1] = reg_temp_over[i];
data->reg_temp[2][src - 1] = reg_temp_hyst[i];
@@ -3917,7 +3918,7 @@ static int nct6775_probe(struct platform_device *pdev)
continue;
/* Use dynamic index for other sources */
- data->have_temp |= 1 << s;
+ data->have_temp |= BIT(s);
data->reg_temp[0][s] = reg_temp[i];
data->reg_temp[1][s] = reg_temp_over[i];
data->reg_temp[2][s] = reg_temp_hyst[i];
@@ -3960,17 +3961,17 @@ static int nct6775_probe(struct platform_device *pdev)
* are no duplicates.
*/
if (src != TEMP_SOURCE_VIRTUAL) {
- if (mask & (1 << src))
+ if (mask & BIT(src))
continue;
- mask |= 1 << src;
+ mask |= BIT(src);
}
/* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
if (src <= data->temp_fixed_num) {
- if (data->have_temp & (1 << (src - 1)))
+ if (data->have_temp & BIT(src - 1))
continue;
- data->have_temp |= 1 << (src - 1);
- data->have_temp_fixed |= 1 << (src - 1);
+ data->have_temp |= BIT(src - 1);
+ data->have_temp_fixed |= BIT(src - 1);
data->reg_temp[0][src - 1] = reg_temp_mon[i];
data->temp_src[src - 1] = src;
continue;
@@ -3980,7 +3981,7 @@ static int nct6775_probe(struct platform_device *pdev)
continue;
/* Use dynamic index for other sources */
- data->have_temp |= 1 << s;
+ data->have_temp |= BIT(s);
data->reg_temp[0][s] = reg_temp_mon[i];
data->temp_src[s] = src;
s++;
@@ -3996,13 +3997,13 @@ static int nct6775_probe(struct platform_device *pdev)
for (i = 0; i < data->temp_label_num - 1; i++) {
if (!reg_temp_alternate[i])
continue;
- if (mask & (1 << (i + 1)))
+ if (mask & BIT(i + 1))
continue;
if (i < data->temp_fixed_num) {
- if (data->have_temp & (1 << i))
+ if (data->have_temp & BIT(i))
continue;
- data->have_temp |= 1 << i;
- data->have_temp_fixed |= 1 << i;
+ data->have_temp |= BIT(i);
+ data->have_temp_fixed |= BIT(i);
data->reg_temp[0][i] = reg_temp_alternate[i];
if (i < num_reg_temp) {
data->reg_temp[1][i] = reg_temp_over[i];
@@ -4015,7 +4016,7 @@ static int nct6775_probe(struct platform_device *pdev)
if (s >= NUM_TEMP) /* Abort if no more space */
break;
- data->have_temp |= 1 << s;
+ data->have_temp |= BIT(s);
data->reg_temp[0][s] = reg_temp_alternate[i];
data->temp_src[s] = i + 1;
s++;
@@ -4180,7 +4181,7 @@ static int __maybe_unused nct6775_resume(struct device *dev)
/* Restore limits */
for (i = 0; i < data->in_num; i++) {
- if (!(data->have_in & (1 << i)))
+ if (!(data->have_in & BIT(i)))
continue;
nct6775_write_value(data, data->REG_IN_MINMAX[0][i],
@@ -4190,7 +4191,7 @@ static int __maybe_unused nct6775_resume(struct device *dev)
}
for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
- if (!(data->has_fan_min & (1 << i)))
+ if (!(data->has_fan_min & BIT(i)))
continue;
nct6775_write_value(data, data->REG_FAN_MIN[i],
@@ -4198,7 +4199,7 @@ static int __maybe_unused nct6775_resume(struct device *dev)
}
for (i = 0; i < NUM_TEMP; i++) {
- if (!(data->have_temp & (1 << i)))
+ if (!(data->have_temp & BIT(i)))
continue;
for (j = 1; j < ARRAY_SIZE(data->reg_temp); j++)
Using bitops instead of shift operations makes the code easier to read. Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- drivers/hwmon/nct6775.c | 123 ++++++++++++++++++++++++------------------------ 1 file changed, 62 insertions(+), 61 deletions(-)