/* The next few functions are the call-back functions of the /proc/sys and
sysctl files. Which function is used is defined in the ctl_table in
the extra1 field.
Each function must return the magnitude (power of 10 to divide the date
with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must
put a maximum of *nrels elements in results reflecting the data of this
file, and set *nrels to the number it actually put in it, if operation==
SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from
results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE.
Note that on SENSORS_PROC_REAL_READ, I do not check whether results is
large enough (by checking the incoming value of *nrels). This is not very
good practice, but as long as you put less than about 5 values in results,
you can assume it is large enough. */
void adm1025_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
int scales[6] = { 250, 225, 330, 500, 1200, 330 };
struct adm1025_data *data = client->data;
int nr = ctl_name - ADM1025_SYSCTL_IN0;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 2;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1025_update_client(client);
results[0] =
IN_FROM_REG(data->in_min[nr], nr) * scales[nr] / 192;
results[1] =
IN_FROM_REG(data->in_max[nr], nr) * scales[nr] / 192;
results[2] =
IN_FROM_REG(data->in[nr], nr) * scales[nr] / 192;
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->in_min[nr] =
IN_TO_REG((results[0] * 192) / scales[nr], nr);
adm1025_write_value(client, ADM1025_REG_IN_MIN(nr),
data->in_min[nr]);
}
if (*nrels_mag >= 2) {
data->in_max[nr] =
IN_TO_REG((results[1] * 192) / scales[nr], nr);
adm1025_write_value(client, ADM1025_REG_IN_MAX(nr),
data->in_max[nr]);
}
}
}
void adm1025_update_client(struct i2c_client *client)
{
struct adm1025_data *data = client->data;
u8 i;
down(&data->update_lock);
if (
(jiffies - data->last_updated >
(data->type == adm1025 ? HZ / 2 : HZ * 2))
|| (jiffies < data->last_updated) || !data->valid) {
#ifdef DEBUG
printk("Starting adm1025 update\n");
#endif
for (i = 0; i <= 5; i++) {
data->in[i] =
adm1025_read_value(client, ADM1025_REG_IN(i));
data->in_min[i] =
adm1025_read_value(client,
ADM1025_REG_IN_MIN(i));
data->in_max[i] =
adm1025_read_value(client,
ADM1025_REG_IN_MAX(i));
}
data->temp =
adm1025_read_value(client, ADM1025_REG_TEMP);
data->rtemp =
adm1025_read_value(client, ADM1025_REG_RTEMP);
#ifdef DEBUG
printk("The temp is %2x\n",data->temp);
#endif
data->temp_max =
adm1025_read_value(client, ADM1025_REG_TEMP_HIGH);
data->temp_min =
adm1025_read_value(client, ADM1025_REG_TEMP_LOW);
data->rtemp_max =
adm1025_read_value(client, ADM1025_REG_RTEMP_HIGH);
data->rtemp_min =
adm1025_read_value(client, ADM1025_REG_RTEMP_LOW);
i = adm1025_read_value(client, ADM1025_REG_VID);
data->vid = i & 0x0f;
data->vid |=
(adm1025_read_value(client, ADM1025_REG_VID4) & 0x01)
<< 4;
data->alarms =
adm1025_read_value(client,
ADM1025_REG_INT1_STAT) +
(adm1025_read_value(client, ADM1025_REG_INT2_STAT) <<
8);
data->last_updated = jiffies;
data->valid = 1;
}
up(&data->update_lock);
}
static void adm1025_init_client(struct i2c_client *client)
{
u8 reg;
struct adm1025_data *data = i2c_get_clientdata(client);
int i;
data->vrm = vid_which_vrm();
/*
* Set high limits
* Usually we avoid setting limits on driver init, but it happens
* that the ADM1025 comes with stupid default limits (all registers
* set to 0). In case the chip has not gone through any limit
* setting yet, we better set the high limits to the max so that
* no alarm triggers.
*/
for (i = 0; i < 6; i++) {
reg = i2c_smbus_read_byte_data(client,
ADM1025_REG_IN_MAX(i));
if (reg == 0)
i2c_smbus_write_byte_data(client,
ADM1025_REG_IN_MAX(i),
0xFF);
}
for (i = 0; i < 2; i++) {
reg = i2c_smbus_read_byte_data(client,
ADM1025_REG_TEMP_HIGH(i));
if (reg == 0)
i2c_smbus_write_byte_data(client,
ADM1025_REG_TEMP_HIGH(i),
0x7F);
}
/*
* Start the conversions
*/
reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
if (!(reg & 0x01))
i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG,
(reg&0x7E)|0x01);
}
static void adm1025_init_client(struct i2c_client *client)
{
u8 reg;
struct adm1025_data *data = i2c_get_clientdata(client);
int i;
data->vrm = vid_which_vrm();
/*
*/
for (i = 0; i < 6; i++) {
reg = i2c_smbus_read_byte_data(client,
ADM1025_REG_IN_MAX(i));
if (reg == 0)
i2c_smbus_write_byte_data(client,
ADM1025_REG_IN_MAX(i),
0xFF);
}
for (i = 0; i < 2; i++) {
reg = i2c_smbus_read_byte_data(client,
ADM1025_REG_TEMP_HIGH(i));
if (reg == 0)
i2c_smbus_write_byte_data(client,
ADM1025_REG_TEMP_HIGH(i),
0x7F);
}
/*
*/
reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG);
if (!(reg & 0x01))
i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG,
(reg&0x7E)|0x01);
}
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(attr)->index;
struct i2c_client *client = to_i2c_client(dev);
struct adm1025_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_max[index] = IN_TO_REG(val, in_scale[index]);
i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(index),
data->in_max[index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct adm1025_data *adm1025_update_device(struct device *dev)
{
struct adm1025_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
int i;
dev_dbg(&client->dev, "Updating data.\n");
for (i = 0; i < 6; i++) {
data->in[i] = i2c_smbus_read_byte_data(client,
ADM1025_REG_IN(i));
data->in_min[i] = i2c_smbus_read_byte_data(client,
ADM1025_REG_IN_MIN(i));
data->in_max[i] = i2c_smbus_read_byte_data(client,
ADM1025_REG_IN_MAX(i));
}
for (i = 0; i < 2; i++) {
data->temp[i] = i2c_smbus_read_byte_data(client,
ADM1025_REG_TEMP(i));
data->temp_min[i] = i2c_smbus_read_byte_data(client,
ADM1025_REG_TEMP_LOW(i));
data->temp_max[i] = i2c_smbus_read_byte_data(client,
ADM1025_REG_TEMP_HIGH(i));
}
data->alarms = i2c_smbus_read_byte_data(client,
ADM1025_REG_STATUS1)
| (i2c_smbus_read_byte_data(client,
ADM1025_REG_STATUS2) << 8);
data->vid = (i2c_smbus_read_byte_data(client,
ADM1025_REG_VID) & 0x0f)
| ((i2c_smbus_read_byte_data(client,
ADM1025_REG_VID4) & 0x01) << 4);
data->last_updated = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(attr)->index;
struct adm1025_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_max[index] = IN_TO_REG(val, in_scale[index]);
i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(index),
data->in_max[index]);
mutex_unlock(&data->update_lock);
return count;
}
/* Called when we have found a new ADM1025. It should set limits, etc. */
void adm1025_init_client(struct i2c_client *client)
{
struct adm1025_data *data = client->data;
data->vrm = DEFAULT_VRM;
/* Reset all except Watchdog values and last conversion values
This sets fan-divs to 2, among others. This makes most other
initializations unnecessary */
adm1025_write_value(client, ADM1025_REG_CONFIG, 0x80);
adm1025_write_value(client, ADM1025_REG_IN_MIN(0),
IN_TO_REG(ADM1025_INIT_IN_MIN_0, 0));
adm1025_write_value(client, ADM1025_REG_IN_MAX(0),
IN_TO_REG(ADM1025_INIT_IN_MAX_0, 0));
adm1025_write_value(client, ADM1025_REG_IN_MIN(1),
IN_TO_REG(ADM1025_INIT_IN_MIN_1, 1));
adm1025_write_value(client, ADM1025_REG_IN_MAX(1),
IN_TO_REG(ADM1025_INIT_IN_MAX_1, 1));
adm1025_write_value(client, ADM1025_REG_IN_MIN(2),
IN_TO_REG(ADM1025_INIT_IN_MIN_2, 2));
adm1025_write_value(client, ADM1025_REG_IN_MAX(2),
IN_TO_REG(ADM1025_INIT_IN_MAX_2, 2));
adm1025_write_value(client, ADM1025_REG_IN_MIN(3),
IN_TO_REG(ADM1025_INIT_IN_MIN_3, 3));
adm1025_write_value(client, ADM1025_REG_IN_MAX(3),
IN_TO_REG(ADM1025_INIT_IN_MAX_3, 3));
adm1025_write_value(client, ADM1025_REG_IN_MIN(4),
IN_TO_REG(ADM1025_INIT_IN_MIN_4, 4));
adm1025_write_value(client, ADM1025_REG_IN_MAX(4),
IN_TO_REG(ADM1025_INIT_IN_MAX_4, 4));
adm1025_write_value(client, ADM1025_REG_IN_MIN(5),
IN_TO_REG(ADM1025_INIT_IN_MIN_5, 5));
adm1025_write_value(client, ADM1025_REG_IN_MAX(5),
IN_TO_REG(ADM1025_INIT_IN_MAX_5, 5));
adm1025_write_value(client, ADM1025_REG_RTEMP_HIGH,
TEMP_LIMIT_TO_REG(ADM1025_INIT_RTEMP_MAX));
adm1025_write_value(client, ADM1025_REG_RTEMP_LOW,
TEMP_LIMIT_TO_REG(ADM1025_INIT_RTEMP_MIN));
adm1025_write_value(client, ADM1025_REG_TEMP_HIGH,
TEMP_LIMIT_TO_REG(ADM1025_INIT_TEMP_MAX));
adm1025_write_value(client, ADM1025_REG_TEMP_LOW,
TEMP_LIMIT_TO_REG(ADM1025_INIT_TEMP_MIN));
/* Start monitoring */
adm1025_write_value(client, ADM1025_REG_CONFIG, 0x01);
}