static void lm87_init_client(struct i2c_client *client)
{
struct lm87_data *data = i2c_get_clientdata(client);
if (client->dev.platform_data) {
data->channel = *(u8 *)client->dev.platform_data;
lm87_write_value(client,
LM87_REG_CHANNEL_MODE, data->channel);
} else {
data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE);
}
data->config = lm87_read_value(client, LM87_REG_CONFIG);
if (!(data->config & 0x01)) {
int i;
/* Limits are left uninitialized after power-up */
for (i = 1; i < 6; i++) {
lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00);
lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF);
}
for (i = 0; i < 2; i++) {
lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F);
lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00);
lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00);
lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF);
}
if (data->channel & CHAN_TEMP3) {
lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F);
lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00);
} else {
lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00);
lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF);
}
}
/* Make sure Start is set and INT#_Clear is clear */
if ((data->config & 0x09) != 0x01)
lm87_write_value(client, LM87_REG_CONFIG,
(data->config & 0x77) | 0x01);
}
static void set_in_min(struct device *dev, const char *buf, int nr)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]);
lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) :
LM87_REG_AIN_MIN(nr-6), data->in_min[nr]);
mutex_unlock(&data->update_lock);
}
static struct lm87_data *lm87_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm87_data *data = i2c_get_clientdata(client);
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
int i, j;
dev_dbg(&client->dev, "Updating data.\n");
i = (data->channel & CHAN_TEMP3) ? 1 : 0;
j = (data->channel & CHAN_TEMP3) ? 5 : 6;
for (; i < j; i++) {
data->in[i] = lm87_read_value(client,
LM87_REG_IN(i));
data->in_min[i] = lm87_read_value(client,
LM87_REG_IN_MIN(i));
data->in_max[i] = lm87_read_value(client,
LM87_REG_IN_MAX(i));
}
for (i = 0; i < 2; i++) {
if (data->channel & CHAN_NO_FAN(i)) {
data->in[6+i] = lm87_read_value(client,
LM87_REG_AIN(i));
data->in_max[6+i] = lm87_read_value(client,
LM87_REG_AIN_MAX(i));
data->in_min[6+i] = lm87_read_value(client,
LM87_REG_AIN_MIN(i));
} else {
data->fan[i] = lm87_read_value(client,
LM87_REG_FAN(i));
data->fan_min[i] = lm87_read_value(client,
LM87_REG_FAN_MIN(i));
}
}
j = (data->channel & CHAN_TEMP3) ? 3 : 2;
for (i = 0 ; i < j; i++) {
data->temp[i] = lm87_read_value(client,
LM87_REG_TEMP[i]);
data->temp_high[i] = lm87_read_value(client,
LM87_REG_TEMP_HIGH[i]);
data->temp_low[i] = lm87_read_value(client,
LM87_REG_TEMP_LOW[i]);
}
i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK);
j = lm87_read_value(client, LM87_REG_TEMP_HW_INT);
data->temp_crit_int = min(i, j);
i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK);
j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT);
data->temp_crit_ext = min(i, j);
i = lm87_read_value(client, LM87_REG_VID_FAN_DIV);
data->fan_div[0] = (i >> 4) & 0x03;
data->fan_div[1] = (i >> 6) & 0x03;
data->vid = (i & 0x0F)
| (lm87_read_value(client, LM87_REG_VID4) & 0x01)
<< 4;
data->alarms = lm87_read_value(client, LM87_REG_ALARMS1)
| (lm87_read_value(client, LM87_REG_ALARMS2)
<< 8);
data->aout = lm87_read_value(client, LM87_REG_AOUT);
data->last_updated = jiffies;
data->valid = 1;
}