* Try to reserve ioreg and ioreg + 1 for exclusive access.
*/
if (!request_muxed_region(ioreg, 2, DRVNAME))
- goto error;
+ return -EBUSY;
__superio_enter(ioreg);
return 0;
-
-error:
- return -EBUSY;
}
static inline void superio_exit(int ioreg, bool doexit)
#define IT8655E_DEVID 0x8655
#define IT8665E_DEVID 0x8665
#define IT8686E_DEVID 0x8686
-#define IT87_ACT_REG 0x30
-#define IT87_BASE_REG 0x60
-/* Logical device 7 registers (IT8712F and later) */
+/* Logical device 4 (Environmental Monitor) registers */
+#define IT87_ACT_REG 0x30
+#define IT87_BASE_REG 0x60
+#define IT87_SPECIAL_CFG_REG 0xf3 /* special configuration register */
+
+/* Logical device 7 (GPIO) registers (IT8712F and later) */
#define IT87_SIO_GPIO1_REG 0x25
#define IT87_SIO_GPIO2_REG 0x26
#define IT87_SIO_GPIO3_REG 0x27
u8 num_temp_map; /* Number of temperature sources for pwm */
u8 peci_mask;
u8 old_peci_mask;
+ u8 smbus_bitmap; /* SMBus enable bits in extra config register */
+ u8 ec_special_config;
};
#define FEAT_12MV_ADC BIT(0)
.num_temp_limit = 6,
.num_temp_offset = 6,
.num_temp_map = 6,
+ .smbus_bitmap = BIT(1) | BIT(2),
},
[it8628] = {
.name = "it8628",
.num_temp_limit = 6,
.num_temp_offset = 6,
.num_temp_map = 6,
+ .smbus_bitmap = BIT(2),
},
[it8665] = {
.name = "it8665",
.num_temp_limit = 6,
.num_temp_offset = 6,
.num_temp_map = 6,
+ .smbus_bitmap = BIT(2),
},
[it8686] = {
.name = "it8686",
.num_temp_limit = 6,
.num_temp_offset = 6,
.num_temp_map = 7,
+ .smbus_bitmap = BIT(1) | BIT(2),
},
};
struct it87_sio_data {
enum chips type;
+ u8 sioaddr;
+ u8 doexit;
/* Values read from Super-I/O config space */
u8 revision;
u8 vid_value;
u8 skip_fan;
u8 skip_pwm;
u8 skip_temp;
+ u8 smbus_bitmap;
+ u8 ec_special_config;
};
/*
u8 peci_mask;
u8 old_peci_mask;
+ u8 smbus_bitmap; /* !=0 if SMBus needs to be disabled */
+ u8 ec_special_config; /* EC special config register restore value */
+ u8 sioaddr; /* SIO port address */
+ bool doexit; /* true if exit from sio config is ok */
+
const u8 *REG_FAN;
const u8 *REG_FANX;
const u8 *REG_FAN_MIN;
750000,
};
+static int smbus_disable(struct it87_data *data)
+{
+ int err;
+
+ if (data->smbus_bitmap) {
+ err = superio_enter(data->sioaddr);
+ if (err)
+ return err;
+ superio_select(data->sioaddr, PME);
+ superio_outb(data->sioaddr, IT87_SPECIAL_CFG_REG,
+ data->ec_special_config & ~data->smbus_bitmap);
+ superio_exit(data->sioaddr, data->doexit);
+ }
+ return 0;
+}
+
+static int smbus_enable(struct it87_data *data)
+{
+ int err;
+
+ if (data->smbus_bitmap) {
+ err = superio_enter(data->sioaddr);
+ if (err)
+ return err;
+
+ superio_select(data->sioaddr, PME);
+ superio_outb(data->sioaddr, IT87_SPECIAL_CFG_REG,
+ data->ec_special_config);
+ superio_exit(data->sioaddr, data->doexit);
+ }
+ return 0;
+}
+
static int _it87_read_value(struct it87_data *data, u8 reg)
{
outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
/*
* Must be called with data->update_lock held, except during initialization.
+ * Must be called with SMBus accesses disabled.
* We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
* would slow down the IT87 access and should not be necessary.
*/
/*
* Must be called with data->update_lock held, except during initialization.
+ * Must be called with SMBus accesses disabled
* We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
* would slow down the IT87 access and should not be necessary.
*/
}
}
+static int it87_lock(struct it87_data *data)
+{
+ int err;
+
+ mutex_lock(&data->update_lock);
+ err = smbus_disable(data);
+ if (err)
+ mutex_unlock(&data->update_lock);
+ return err;
+}
+
+static void it87_unlock(struct it87_data *data)
+{
+ smbus_enable(data);
+ mutex_unlock(&data->update_lock);
+}
+
static struct it87_data *it87_update_device(struct device *dev)
{
struct it87_data *data = dev_get_drvdata(dev);
+ int err;
int i;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return ERR_PTR(err);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
!data->valid) {
data->last_updated = jiffies;
data->valid = 1;
}
-
- mutex_unlock(&data->update_lock);
-
+ it87_unlock(data);
return data;
}
int index = sattr->index;
int nr = sattr->nr;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
}
int index = sattr->index;
int nr = sattr->nr;
unsigned long val;
+ int err;
if (kstrtoul(buf, 10, &val) < 0)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
data->in[nr][index] = in_to_reg(data, nr, val);
it87_write_value(data,
index == 1 ? IT87_REG_VIN_MIN(nr)
: IT87_REG_VIN_MAX(nr),
data->in[nr][index]);
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
int index = sattr->index;
struct it87_data *data = it87_update_device(dev);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
}
struct it87_data *data = dev_get_drvdata(dev);
long val;
u8 reg, regval;
+ int err;
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
switch (index) {
default:
data->temp[nr][index] = TEMP_TO_REG(val);
it87_write_value(data, reg, data->temp[nr][index]);
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
struct it87_data *data = it87_update_device(dev);
- int type = get_temp_type(data, sensor_attr->index);
+ int type;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+ type = get_temp_type(data, sensor_attr->index);
return sprintf(buf, "%d\n", type);
}
struct it87_data *data = dev_get_drvdata(dev);
long val;
u8 reg, extra;
+ int err;
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
+ err = it87_lock(data);
+ if (err)
+ return err;
+
reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
reg &= ~(1 << nr);
reg &= ~(8 << nr);
reg |= (nr + 1) << 6;
else if (has_temp_old_peci(data, nr) && val == 6)
extra |= 0x80;
- else if (val != 0)
- return -EINVAL;
+ else if (val != 0) {
+ count = -EINVAL;
+ goto unlock;
+ }
- mutex_lock(&data->update_lock);
data->sensor = reg;
data->extra = extra;
it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
if (has_temp_old_peci(data, nr))
it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
data->valid = 0; /* Force cache refresh */
- mutex_unlock(&data->update_lock);
+unlock:
+ it87_unlock(data);
return count;
}
int speed;
struct it87_data *data = it87_update_device(dev);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
speed = has_16bit_fans(data) ?
FAN16_FROM_REG(data->fan[nr][index]) :
FAN_FROM_REG(data->fan[nr][index],
struct it87_data *data = it87_update_device(dev);
int nr = sensor_attr->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
}
struct it87_data *data = it87_update_device(dev);
int nr = sensor_attr->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", pwm_mode(data, nr));
}
struct it87_data *data = it87_update_device(dev);
int nr = sensor_attr->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n",
pwm_from_reg(data, data->pwm_duty[nr]));
}
unsigned int freq;
int index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
if (has_pwm_freq2(data) && nr == 1)
index = (data->extra >> 4) & 0x07;
else
struct it87_data *data = dev_get_drvdata(dev);
long val;
+ int err;
u8 reg;
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
if (has_16bit_fans(data)) {
data->fan[nr][index] = FAN16_TO_REG(val);
it87_write_value(data, data->REG_FAN_MIN[nr],
data->fan[nr][index]);
}
-
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
struct it87_data *data = dev_get_drvdata(dev);
int nr = sensor_attr->index;
unsigned long val;
- int min;
+ int min, err;
u8 old;
if (kstrtoul(buf, 10, &val) < 0)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
old = it87_read_value(data, IT87_REG_FAN_DIV);
/* Save fan min limit */
/* Restore fan min limit */
data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
it87_write_value(data, data->REG_FAN_MIN[nr], data->fan[nr][1]);
-
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
struct it87_data *data = dev_get_drvdata(dev);
int nr = sensor_attr->index;
long val;
+ int err;
if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
return -EINVAL;
return -EINVAL;
}
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;;
+
it87_update_pwm_ctrl(data, nr);
if (val == 0) {
data->fan_main_ctrl);
}
}
-
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
struct it87_data *data = dev_get_drvdata(dev);
int nr = sensor_attr->index;
long val;
+ int err;
if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
it87_update_pwm_ctrl(data, nr);
if (has_newer_autopwm(data)) {
/*
* is read-only so we can't write the value.
*/
if (data->pwm_ctrl[nr] & 0x80) {
- mutex_unlock(&data->update_lock);
- return -EBUSY;
+ count = -EBUSY;
+ goto unlock;
}
data->pwm_duty[nr] = pwm_to_reg(data, val);
it87_write_value(data, IT87_REG_PWM_DUTY[nr],
data->pwm_ctrl[nr]);
}
}
- mutex_unlock(&data->update_lock);
+unlock:
+ it87_unlock(data);
return count;
}
struct it87_data *data = dev_get_drvdata(dev);
int nr = sensor_attr->index;
unsigned long val;
+ int err;
int i;
if (kstrtoul(buf, 10, &val) < 0)
break;
}
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
if (nr == 0) {
data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
data->fan_ctl |= i << 4;
data->extra |= i << 4;
it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
}
- mutex_unlock(&data->update_lock);
-
+ it87_unlock(data);
return count;
}
struct it87_data *data = it87_update_device(dev);
int nr = sensor_attr->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", data->pwm_temp_map[nr] + 1);
}
struct it87_data *data = dev_get_drvdata(dev);
int nr = sensor_attr->index;
unsigned long val;
+ int err;
u8 map;
if (kstrtoul(buf, 10, &val) < 0)
map = val - 1;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
it87_update_pwm_ctrl(data, nr);
data->pwm_temp_map[nr] = map;
/*
data->pwm_ctrl[nr] = temp_map_to_reg(data, nr, map);
it87_write_value(data, data->REG_PWM[nr], data->pwm_ctrl[nr]);
}
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
int nr = sensor_attr->nr;
int point = sensor_attr->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n",
pwm_from_reg(data, data->auto_pwm[nr][point]));
}
int point = sensor_attr->index;
int regaddr;
long val;
+ int err;
if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
data->auto_pwm[nr][point] = pwm_to_reg(data, val);
if (has_newer_autopwm(data))
regaddr = IT87_REG_AUTO_TEMP(nr, 3);
else
regaddr = IT87_REG_AUTO_PWM(nr, point);
it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
}
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
unsigned long val;
+ int err;
if (kstrtoul(buf, 10, &val) < 0 || val > 127)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
data->auto_pwm[nr][1]);
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
int point = sensor_attr->index;
int reg;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
if (has_old_autopwm(data) || point)
reg = data->auto_temp[nr][point];
else
int point = sensor_attr->index;
long val;
int reg;
+ int err;
if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
if (has_newer_autopwm(data) && !point) {
reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
point--;
it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
}
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
{
struct it87_data *data = it87_update_device(dev);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
struct it87_data *data = it87_update_device(dev);
int bitnr = to_sensor_dev_attr(attr)->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
}
size_t count)
{
struct it87_data *data = dev_get_drvdata(dev);
- int config;
+ int err, config;
long val;
if (kstrtol(buf, 10, &val) < 0 || val != 0)
return -EINVAL;
- mutex_lock(&data->update_lock);
- config = it87_read_value(data, IT87_REG_CONFIG);
- if (config < 0) {
- count = config;
- } else {
- config |= BIT(5);
- it87_write_value(data, IT87_REG_CONFIG, config);
- /* Invalidate cache to force re-read */
- data->valid = 0;
- }
- mutex_unlock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+ config = it87_read_value(data, IT87_REG_CONFIG);
+ config |= BIT(5);
+ it87_write_value(data, IT87_REG_CONFIG, config);
+ /* Invalidate cache to force re-read */
+ data->valid = 0;
+ it87_unlock(data);
return count;
}
struct it87_data *data = it87_update_device(dev);
int bitnr = to_sensor_dev_attr(attr)->index;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
}
int bitnr = to_sensor_dev_attr(attr)->index;
struct it87_data *data = dev_get_drvdata(dev);
long val;
+ int err;
if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
return -EINVAL;
- mutex_lock(&data->update_lock);
+ err = it87_lock(data);
+ if (err)
+ return err;
+
data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
if (val)
data->beeps |= BIT(bitnr);
else
data->beeps &= ~BIT(bitnr);
it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
- mutex_unlock(&data->update_lock);
+ it87_unlock(data);
return count;
}
{
struct it87_data *data = it87_update_device(dev);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
if (err)
return err;
+ sio_data->sioaddr = sioaddr;
+
err = -ENODEV;
chip_type = superio_inw(sioaddr, DEVID);
if (chip_type == 0xffff)
goto exit;
}
+ sio_data->doexit = doexit;
+
err = 0;
sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
/* Check for pwm2, fan2 */
if (reg29 & BIT(1))
sio_data->skip_pwm |= BIT(1);
+ /*
+ * Note: Table 6-1 in datasheet claims that FAN_TAC2
+ * would be enabled with 29h[2]=0.
+ */
if (reg2d & BIT(4))
sio_data->skip_fan |= BIT(1);
sio_data->skip_fan |= BIT(3);
if (reg26 & BIT(5))
sio_data->skip_pwm |= BIT(4);
- if (!(reg26 & BIT(4)))
+ if (reg26 & BIT(4))
sio_data->skip_fan |= BIT(4);
}
if (sio_data->beep_pin)
pr_info("Beeping is supported\n");
+ if (config->smbus_bitmap) {
+ u8 reg;
+
+ superio_select(sioaddr, PME);
+ reg = superio_inb(sioaddr, IT87_SPECIAL_CFG_REG);
+ sio_data->ec_special_config = reg;
+ sio_data->smbus_bitmap = reg & config->smbus_bitmap;
+ }
+
exit:
superio_exit(sioaddr, doexit);
return err;
struct it87_sio_data *sio_data = dev_get_platdata(dev);
int enable_pwm_interface;
struct device *hwmon_dev;
+ int err;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
data->addr = res->start;
data->type = sio_data->type;
+ data->sioaddr = sio_data->sioaddr;
+ data->smbus_bitmap = sio_data->smbus_bitmap;
+ data->ec_special_config = sio_data->ec_special_config;
+ data->doexit = sio_data->doexit;
data->features = it87_devices[sio_data->type].features;
data->num_temp_limit = it87_devices[sio_data->type].num_temp_limit;
data->num_temp_offset = it87_devices[sio_data->type].num_temp_offset;
break;
}
- /* Now, we do the remaining detection. */
- if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
- it87_read_value(data, IT87_REG_CHIPID) != 0x90)
- return -ENODEV;
-
platform_set_drvdata(pdev, data);
mutex_init(&data->update_lock);
/* Initialize register pointers */
it87_init_regs(pdev);
+ err = smbus_disable(data);
+ if (err)
+ return err;
+
+ /* Now, we do the remaining detection. */
+ if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
+ it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
+ smbus_enable(data);
+ return -ENODEV;
+ }
+
/* Check PWM configuration */
enable_pwm_interface = it87_check_pwm(dev);
/* Initialize the IT87 chip */
it87_init_device(pdev);
+ smbus_enable(data);
+
if (!sio_data->skip_vid) {
data->has_vid = true;
data->vrm = vid_which_vrm();
projects / groeck-it87 / blobdiff