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path: root/drivers/hwmon/w83795.c
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Diffstat (limited to 'drivers/hwmon/w83795.c')
-rw-r--r--drivers/hwmon/w83795.c207
1 files changed, 174 insertions, 33 deletions
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
index 1d840aa8378..cdbc7448491 100644
--- a/drivers/hwmon/w83795.c
+++ b/drivers/hwmon/w83795.c
@@ -165,10 +165,14 @@ static const u8 IN_LSB_SHIFT_IDX[][2] = {
#define W83795_REG_VID_CTRL 0x6A
+#define W83795_REG_ALARM_CTRL 0x40
+#define ALARM_CTRL_RTSACS (1 << 7)
#define W83795_REG_ALARM(index) (0x41 + (index))
+#define W83795_REG_CLR_CHASSIS 0x4D
#define W83795_REG_BEEP(index) (0x50 + (index))
-#define W83795_REG_CLR_CHASSIS 0x4D
+#define W83795_REG_OVT_CFG 0x58
+#define OVT_CFG_SEL (1 << 7)
#define W83795_REG_FCMS1 0x201
@@ -178,6 +182,14 @@ static const u8 IN_LSB_SHIFT_IDX[][2] = {
#define W83795_REG_TSS(index) (0x209 + (index))
+#define TSS_MAP_RESERVED 0xff
+static const u8 tss_map[4][6] = {
+ { 0, 1, 2, 3, 4, 5},
+ { 6, 7, 8, 9, 0, 1},
+ {10, 11, 12, 13, 2, 3},
+ { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED},
+};
+
#define PWM_OUTPUT 0
#define PWM_FREQ 1
#define PWM_START 2
@@ -369,6 +381,7 @@ struct w83795_data {
u8 setup_pwm[3]; /* Register value */
u8 alarms[6]; /* Register value */
+ u8 enable_beep;
u8 beeps[6]; /* Register value */
char valid;
@@ -499,8 +512,11 @@ static void w83795_update_limits(struct i2c_client *client)
}
/* Read beep settings */
- for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
- data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
+ if (data->enable_beep) {
+ for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
+ data->beeps[i] =
+ w83795_read(client, W83795_REG_BEEP(i));
+ }
data->valid_limits = 1;
}
@@ -577,6 +593,7 @@ static struct w83795_data *w83795_update_device(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
struct w83795_data *data = i2c_get_clientdata(client);
u16 tmp;
+ u8 intrusion;
int i;
mutex_lock(&data->update_lock);
@@ -648,9 +665,24 @@ static struct w83795_data *w83795_update_device(struct device *dev)
w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
}
- /* update alarm */
+ /* Update intrusion and alarms
+ * It is important to read intrusion first, because reading from
+ * register SMI STS6 clears the interrupt status temporarily. */
+ tmp = w83795_read(client, W83795_REG_ALARM_CTRL);
+ /* Switch to interrupt status for intrusion if needed */
+ if (tmp & ALARM_CTRL_RTSACS)
+ w83795_write(client, W83795_REG_ALARM_CTRL,
+ tmp & ~ALARM_CTRL_RTSACS);
+ intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6);
+ /* Switch to real-time alarms */
+ w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS);
for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
+ data->alarms[5] |= intrusion;
+ /* Restore original configuration if needed */
+ if (!(tmp & ALARM_CTRL_RTSACS))
+ w83795_write(client, W83795_REG_ALARM_CTRL,
+ tmp & ~ALARM_CTRL_RTSACS);
data->last_updated = jiffies;
data->valid = 1;
@@ -730,6 +762,10 @@ store_chassis_clear(struct device *dev,
val = w83795_read(client, W83795_REG_CLR_CHASSIS);
val |= 0x80;
w83795_write(client, W83795_REG_CLR_CHASSIS, val);
+
+ /* Clear status and force cache refresh */
+ w83795_read(client, W83795_REG_ALARM(5));
+ data->valid = 0;
mutex_unlock(&data->update_lock);
return count;
}
@@ -857,20 +893,20 @@ show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
int index = sensor_attr->index;
u8 tmp;
- if (1 == (data->pwm_fcms[0] & (1 << index))) {
+ /* Speed cruise mode */
+ if (data->pwm_fcms[0] & (1 << index)) {
tmp = 2;
goto out;
}
+ /* Thermal cruise or SmartFan IV mode */
for (tmp = 0; tmp < 6; tmp++) {
if (data->pwm_tfmr[tmp] & (1 << index)) {
tmp = 3;
goto out;
}
}
- if (data->pwm_fomc & (1 << index))
- tmp = 0;
- else
- tmp = 1;
+ /* Manual mode */
+ tmp = 1;
out:
return sprintf(buf, "%u\n", tmp);
@@ -890,23 +926,21 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
if (strict_strtoul(buf, 10, &val) < 0)
return -EINVAL;
- if (val > 2)
+ if (val < 1 || val > 2)
return -EINVAL;
mutex_lock(&data->update_lock);
switch (val) {
- case 0:
case 1:
+ /* Clear speed cruise mode bits */
data->pwm_fcms[0] &= ~(1 << index);
w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
+ /* Clear thermal cruise mode bits */
for (i = 0; i < 6; i++) {
data->pwm_tfmr[i] &= ~(1 << index);
w83795_write(client, W83795_REG_TFMR(i),
data->pwm_tfmr[i]);
}
- data->pwm_fomc |= 1 << index;
- data->pwm_fomc ^= val << index;
- w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
break;
case 2:
data->pwm_fcms[0] |= (1 << index);
@@ -918,23 +952,60 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
}
static ssize_t
+show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w83795_data *data = w83795_update_pwm_config(dev);
+ int index = to_sensor_dev_attr_2(attr)->index;
+ unsigned int mode;
+
+ if (data->pwm_fomc & (1 << index))
+ mode = 0; /* DC */
+ else
+ mode = 1; /* PWM */
+
+ return sprintf(buf, "%u\n", mode);
+}
+
+/*
+ * Check whether a given temperature source can ever be useful.
+ * Returns the number of selectable temperature channels which are
+ * enabled.
+ */
+static int w83795_tss_useful(const struct w83795_data *data, int tsrc)
+{
+ int useful = 0, i;
+
+ for (i = 0; i < 4; i++) {
+ if (tss_map[i][tsrc] == TSS_MAP_RESERVED)
+ continue;
+ if (tss_map[i][tsrc] < 6) /* Analog */
+ useful += (data->has_temp >> tss_map[i][tsrc]) & 1;
+ else /* Digital */
+ useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1;
+ }
+
+ return useful;
+}
+
+static ssize_t
show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute_2 *sensor_attr =
to_sensor_dev_attr_2(attr);
struct w83795_data *data = w83795_update_pwm_config(dev);
int index = sensor_attr->index;
- u8 val = index / 2;
- u8 tmp = data->temp_src[val];
+ u8 tmp = data->temp_src[index / 2];
if (index & 1)
- val = 4;
+ tmp >>= 4; /* Pick high nibble */
else
- val = 0;
- tmp >>= val;
- tmp &= 0x0f;
+ tmp &= 0x0f; /* Pick low nibble */
- return sprintf(buf, "%u\n", tmp);
+ /* Look-up the actual temperature channel number */
+ if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED)
+ return -EINVAL; /* Shouldn't happen */
+
+ return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1);
}
static ssize_t
@@ -946,12 +1017,21 @@ store_temp_src(struct device *dev, struct device_attribute *attr,
struct sensor_device_attribute_2 *sensor_attr =
to_sensor_dev_attr_2(attr);
int index = sensor_attr->index;
- unsigned long tmp;
+ int tmp;
+ unsigned long channel;
u8 val = index / 2;
- if (strict_strtoul(buf, 10, &tmp) < 0)
+ if (strict_strtoul(buf, 10, &channel) < 0 ||
+ channel < 1 || channel > 14)
+ return -EINVAL;
+
+ /* Check if request can be fulfilled */
+ for (tmp = 0; tmp < 4; tmp++) {
+ if (tss_map[tmp][index] == channel - 1)
+ break;
+ }
+ if (tmp == 4) /* No match */
return -EINVAL;
- tmp = SENSORS_LIMIT(tmp, 0, 15);
mutex_lock(&data->update_lock);
if (index & 1) {
@@ -1515,7 +1595,7 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
#define NOT_USED -1
-/* Don't change the attribute order, _max and _min are accessed by index
+/* Don't change the attribute order, _max, _min and _beep are accessed by index
* somewhere else in the code */
#define SENSOR_ATTR_IN(index) { \
SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
@@ -1530,6 +1610,8 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
show_alarm_beep, store_beep, BEEP_ENABLE, \
index + ((index > 14) ? 1 : 0)) }
+/* Don't change the attribute order, _beep is accessed by index
+ * somewhere else in the code */
#define SENSOR_ATTR_FAN(index) { \
SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
NULL, FAN_INPUT, index - 1), \
@@ -1553,9 +1635,13 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
show_pwm, store_pwm, PWM_FREQ, index - 1), \
SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
+ SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \
+ show_pwm_mode, NULL, NOT_USED, index - 1), \
SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
show_fanin, store_fanin, FANIN_TARGET, index - 1) }
+/* Don't change the attribute order, _beep is accessed by index
+ * somewhere else in the code */
#define SENSOR_ATTR_DTS(index) { \
SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \
show_dts_mode, NULL, NOT_USED, index - 7), \
@@ -1574,6 +1660,8 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
+/* Don't change the attribute order, _beep is accessed by index
+ * somewhere else in the code */
#define SENSOR_ATTR_TEMP(index) { \
SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
@@ -1593,8 +1681,6 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
show_alarm_beep, store_beep, BEEP_ENABLE, \
index + (index > 4 ? 11 : 17)), \
- SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO, \
- show_temp_src, store_temp_src, NOT_USED, index - 1), \
SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
show_temp_pwm_enable, store_temp_pwm_enable, \
TEMP_PWM_ENABLE, index - 1), \
@@ -1680,7 +1766,7 @@ static const struct sensor_device_attribute_2 w83795_fan[][4] = {
SENSOR_ATTR_FAN(14),
};
-static const struct sensor_device_attribute_2 w83795_temp[][29] = {
+static const struct sensor_device_attribute_2 w83795_temp[][28] = {
SENSOR_ATTR_TEMP(1),
SENSOR_ATTR_TEMP(2),
SENSOR_ATTR_TEMP(3),
@@ -1700,7 +1786,7 @@ static const struct sensor_device_attribute_2 w83795_dts[][8] = {
SENSOR_ATTR_DTS(14),
};
-static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
+static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
SENSOR_ATTR_PWM(1),
SENSOR_ATTR_PWM(2),
SENSOR_ATTR_PWM(3),
@@ -1711,13 +1797,24 @@ static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
SENSOR_ATTR_PWM(8),
};
+static const struct sensor_device_attribute_2 w83795_tss[6] = {
+ SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO,
+ show_temp_src, store_temp_src, NOT_USED, 0),
+ SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO,
+ show_temp_src, store_temp_src, NOT_USED, 1),
+ SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO,
+ show_temp_src, store_temp_src, NOT_USED, 2),
+ SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO,
+ show_temp_src, store_temp_src, NOT_USED, 3),
+ SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO,
+ show_temp_src, store_temp_src, NOT_USED, 4),
+ SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO,
+ show_temp_src, store_temp_src, NOT_USED, 5),
+};
+
static const struct sensor_device_attribute_2 sda_single_files[] = {
SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
store_chassis_clear, ALARM_STATUS, 46),
- SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
- store_beep, BEEP_ENABLE, 46),
- SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
- store_beep, BEEP_ENABLE, 47),
#ifdef CONFIG_SENSORS_W83795_FANCTRL
SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
store_fanin, FANIN_TOL, NOT_USED),
@@ -1730,6 +1827,13 @@ static const struct sensor_device_attribute_2 sda_single_files[] = {
#endif
};
+static const struct sensor_device_attribute_2 sda_beep_files[] = {
+ SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
+ store_beep, BEEP_ENABLE, 46),
+ SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
+ store_beep, BEEP_ENABLE, 47),
+};
+
/*
* Driver interface
*/
@@ -1859,6 +1963,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
if (!(data->has_in & (1 << i)))
continue;
for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
+ if (j == 4 && !data->enable_beep)
+ continue;
err = fn(dev, &w83795_in[i][j].dev_attr);
if (err)
return err;
@@ -1869,18 +1975,37 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
if (!(data->has_fan & (1 << i)))
continue;
for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
+ if (j == 3 && !data->enable_beep)
+ continue;
err = fn(dev, &w83795_fan[i][j].dev_attr);
if (err)
return err;
}
}
+ for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) {
+ j = w83795_tss_useful(data, i);
+ if (!j)
+ continue;
+ err = fn(dev, &w83795_tss[i].dev_attr);
+ if (err)
+ return err;
+ }
+
for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
err = fn(dev, &sda_single_files[i].dev_attr);
if (err)
return err;
}
+ if (data->enable_beep) {
+ for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) {
+ err = fn(dev, &sda_beep_files[i].dev_attr);
+ if (err)
+ return err;
+ }
+ }
+
#ifdef CONFIG_SENSORS_W83795_FANCTRL
for (i = 0; i < data->has_pwm; i++) {
for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
@@ -1899,6 +2024,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
#else
for (j = 0; j < 8; j++) {
#endif
+ if (j == 7 && !data->enable_beep)
+ continue;
err = fn(dev, &w83795_temp[i][j].dev_attr);
if (err)
return err;
@@ -1910,6 +2037,8 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
if (!(data->has_dts & (1 << i)))
continue;
for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
+ if (j == 7 && !data->enable_beep)
+ continue;
err = fn(dev, &w83795_dts[i][j].dev_attr);
if (err)
return err;
@@ -2049,6 +2178,18 @@ static int w83795_probe(struct i2c_client *client,
else
data->has_pwm = 2;
+ /* Check if BEEP pin is available */
+ if (data->chip_type == w83795g) {
+ /* The W83795G has a dedicated BEEP pin */
+ data->enable_beep = 1;
+ } else {
+ /* The W83795ADG has a shared pin for OVT# and BEEP, so you
+ * can't have both */
+ tmp = w83795_read(client, W83795_REG_OVT_CFG);
+ if ((tmp & OVT_CFG_SEL) == 0)
+ data->enable_beep = 1;
+ }
+
err = w83795_handle_files(dev, device_create_file);
if (err)
goto exit_remove;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 10:10:34 +0000