#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/jiffies.h>
+#include <linux/regmap.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
/* per client data */
struct adm9240_data {
struct i2c_client *client;
+ struct regmap *regmap;
struct mutex update_lock;
char valid;
unsigned long last_updated_measure;
};
/* write new fan div, callers must hold data->update_lock */
-static void adm9240_write_fan_div(struct i2c_client *client, int nr,
+static int adm9240_write_fan_div(struct adm9240_data *data, int nr,
u8 fan_div)
{
- u8 reg, old, shift = (nr + 2) * 2;
+ unsigned int reg, old, shift = (nr + 2) * 2;
+ int err;
- reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
+ err = regmap_read(data->regmap, ADM9240_REG_VID_FAN_DIV, ®);
+ if (err < 0)
+ return err;
old = (reg >> shift) & 3;
reg &= ~(3 << shift);
reg |= (fan_div << shift);
- i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
- dev_dbg(&client->dev,
+ err = regmap_write(data->regmap, ADM9240_REG_VID_FAN_DIV, reg);
+ if (err < 0)
+ return err;
+ dev_dbg(&data->client->dev,
"fan%d clock divider changed from %u to %u\n",
nr + 1, 1 << old, 1 << fan_div);
+
+ return 0;
+}
+
+static int adm9240_update_measure(struct adm9240_data *data)
+{
+ unsigned int val;
+ u8 regs[2];
+ int err;
+ int i;
+
+ err = regmap_bulk_read(data->regmap, ADM9240_REG_IN(0), &data->in[0], 6);
+ if (err < 0)
+ return err;
+ err = regmap_bulk_read(data->regmap, ADM9240_REG_INT(0), ®s, 2);
+ if (err < 0)
+ return err;
+
+ data->alarms = regs[0] | regs[1] << 8;
+
+ /*
+ * read temperature: assume temperature changes less than
+ * 0.5'C per two measurement cycles thus ignore possible
+ * but unlikely aliasing error on lsb reading. --Grant
+ */
+ err = regmap_read(data->regmap, ADM9240_REG_TEMP, &val);
+ if (err < 0)
+ return err;
+ data->temp = val << 8;
+ err = regmap_read(data->regmap, ADM9240_REG_TEMP_CONF, &val);
+ if (err < 0)
+ return err;
+ data->temp |= val;
+
+ err = regmap_bulk_read(data->regmap, ADM9240_REG_FAN(0),
+ &data->fan[0], 2);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i < 2; i++) { /* read fans */
+ /* adjust fan clock divider on overflow */
+ if (data->valid && data->fan[i] == 255 &&
+ data->fan_div[i] < 3) {
+
+ err = adm9240_write_fan_div(data, i,
+ ++data->fan_div[i]);
+ if (err < 0)
+ return err;
+
+ /* adjust fan_min if active, but not to 0 */
+ if (data->fan_min[i] < 255 &&
+ data->fan_min[i] >= 2)
+ data->fan_min[i] /= 2;
+ }
+ }
+
+ return 0;
+}
+
+static int adm9240_update_config(struct adm9240_data *data)
+{
+ unsigned int val;
+ int i;
+ int err;
+
+ for (i = 0; i < 6; i++) {
+ err = regmap_raw_read(data->regmap, ADM9240_REG_IN_MIN(i),
+ &data->in_min[i], 1);
+ if (err < 0)
+ return err;
+ err = regmap_raw_read(data->regmap, ADM9240_REG_IN_MAX(i),
+ &data->in_max[i], 1);
+ if (err < 0)
+ return err;
+ }
+ err = regmap_bulk_read(data->regmap, ADM9240_REG_FAN_MIN(0),
+ &data->fan_min[0], 2);
+ if (err < 0)
+ return err;
+ err = regmap_bulk_read(data->regmap, ADM9240_REG_TEMP_MAX(0),
+ &data->temp_max[0], 2);
+ if (err < 0)
+ return err;
+
+ /* read fan divs and 5-bit VID */
+ err = regmap_read(data->regmap, ADM9240_REG_VID_FAN_DIV, &val);
+ if (err < 0)
+ return err;
+ data->fan_div[0] = (val >> 4) & 3;
+ data->fan_div[1] = (val >> 6) & 3;
+ data->vid = val & 0x0f;
+ err = regmap_read(data->regmap, ADM9240_REG_VID4, &val);
+ if (err < 0)
+ return err;
+ data->vid |= (val & 1) << 4;
+ /* read analog out */
+ err = regmap_raw_read(data->regmap, ADM9240_REG_ANALOG_OUT,
+ &data->aout, 1);
+
+ return err;
}
static struct adm9240_data *adm9240_update_device(struct device *dev)
{
struct adm9240_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int i;
+ int err;
mutex_lock(&data->update_lock);
/* minimum measurement cycle: 1.75 seconds */
if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
|| !data->valid) {
-
- for (i = 0; i < 6; i++) { /* read voltages */
- data->in[i] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_IN(i));
- }
- data->alarms = i2c_smbus_read_byte_data(client,
- ADM9240_REG_INT(0)) |
- i2c_smbus_read_byte_data(client,
- ADM9240_REG_INT(1)) << 8;
-
- /*
- * read temperature: assume temperature changes less than
- * 0.5'C per two measurement cycles thus ignore possible
- * but unlikely aliasing error on lsb reading. --Grant
- */
- data->temp = (i2c_smbus_read_byte_data(client,
- ADM9240_REG_TEMP) << 8) |
- i2c_smbus_read_byte_data(client,
- ADM9240_REG_TEMP_CONF);
-
- for (i = 0; i < 2; i++) { /* read fans */
- data->fan[i] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_FAN(i));
-
- /* adjust fan clock divider on overflow */
- if (data->valid && data->fan[i] == 255 &&
- data->fan_div[i] < 3) {
-
- adm9240_write_fan_div(client, i,
- ++data->fan_div[i]);
-
- /* adjust fan_min if active, but not to 0 */
- if (data->fan_min[i] < 255 &&
- data->fan_min[i] >= 2)
- data->fan_min[i] /= 2;
- }
+ err = adm9240_update_measure(data);
+ if (err < 0) {
+ data->valid = 0;
+ mutex_unlock(&data->update_lock);
+ return ERR_PTR(err);
}
data->last_updated_measure = jiffies;
}
/* minimum config reading cycle: 300 seconds */
if (time_after(jiffies, data->last_updated_config + (HZ * 300))
|| !data->valid) {
-
- for (i = 0; i < 6; i++) {
- data->in_min[i] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_IN_MIN(i));
- data->in_max[i] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_IN_MAX(i));
- }
- for (i = 0; i < 2; i++) {
- data->fan_min[i] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_FAN_MIN(i));
+ err = adm9240_update_config(data);
+ if (err < 0) {
+ data->valid = 0;
+ mutex_unlock(&data->update_lock);
+ return ERR_PTR(err);
}
- data->temp_max[0] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_TEMP_MAX(0));
- data->temp_max[1] = i2c_smbus_read_byte_data(client,
- ADM9240_REG_TEMP_MAX(1));
-
- /* read fan divs and 5-bit VID */
- i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
- data->fan_div[0] = (i >> 4) & 3;
- data->fan_div[1] = (i >> 6) & 3;
- data->vid = i & 0x0f;
- data->vid |= (i2c_smbus_read_byte_data(client,
- ADM9240_REG_VID4) & 1) << 4;
- /* read analog out */
- data->aout = i2c_smbus_read_byte_data(client,
- ADM9240_REG_ANALOG_OUT);
-
data->last_updated_config = jiffies;
data->valid = 1;
}
struct device_attribute *dummy, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", data->temp / 128 * 500); /* 9-bit value */
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", data->temp_max[attr->index] * 1000);
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
long val;
int err;
mutex_lock(&data->update_lock);
data->temp_max[attr->index] = TEMP_TO_REG(val);
- i2c_smbus_write_byte_data(client, ADM9240_REG_TEMP_MAX(attr->index),
- data->temp_max[attr->index]);
+ err = regmap_write(data->regmap, ADM9240_REG_TEMP_MAX(attr->index),
+ data->temp_max[attr->index]);
mutex_unlock(&data->update_lock);
- return count;
+ return err < 0 ? err : count;
}
static DEVICE_ATTR_RO(temp1_input);
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index],
attr->index));
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index],
attr->index));
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index],
attr->index));
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
unsigned long val;
int err;
mutex_lock(&data->update_lock);
data->in_min[attr->index] = IN_TO_REG(val, attr->index);
- i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(attr->index),
- data->in_min[attr->index]);
+ err = regmap_write(data->regmap, ADM9240_REG_IN_MIN(attr->index),
+ data->in_min[attr->index]);
mutex_unlock(&data->update_lock);
- return count;
+ return err < 0 ? err : count;
}
static ssize_t in_max_store(struct device *dev,
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
unsigned long val;
int err;
mutex_lock(&data->update_lock);
data->in_max[attr->index] = IN_TO_REG(val, attr->index);
- i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(attr->index),
- data->in_max[attr->index]);
+ err = regmap_write(data->regmap, ADM9240_REG_IN_MAX(attr->index),
+ data->in_max[attr->index]);
mutex_unlock(&data->update_lock);
- return count;
+ return err < 0 ? err : count;
}
static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index],
1 << data->fan_div[attr->index]));
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[attr->index],
1 << data->fan_div[attr->index]));
}
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]);
}
if (new_div != data->fan_div[nr]) {
data->fan_div[nr] = new_div;
- adm9240_write_fan_div(client, nr, new_div);
+ adm9240_write_fan_div(data, nr, new_div);
}
- i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr),
- data->fan_min[nr]);
+ err = regmap_write(data->regmap, ADM9240_REG_FAN_MIN(nr),
+ data->fan_min[nr]);
mutex_unlock(&data->update_lock);
- return count;
+ return err < 0 ? err : count;
}
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
struct device_attribute *attr, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR_RO(alarms);
{
int bitnr = to_sensor_dev_attr(attr)->index;
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
}
static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
struct device_attribute *attr, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR_RO(cpu0_vid);
struct device_attribute *attr, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
}
const char *buf, size_t count)
{
struct adm9240_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
long val;
int err;
mutex_lock(&data->update_lock);
data->aout = AOUT_TO_REG(val);
- i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout);
+ err = regmap_write(data->regmap, ADM9240_REG_ANALOG_OUT, data->aout);
mutex_unlock(&data->update_lock);
- return count;
+ return err < 0 ? err : count;
}
static DEVICE_ATTR_RW(aout_output);
const char *buf, size_t count)
{
struct adm9240_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
unsigned long val;
+ int err;
if (kstrtoul(buf, 10, &val) || val != 0)
return -EINVAL;
mutex_lock(&data->update_lock);
- i2c_smbus_write_byte_data(client, ADM9240_REG_CHASSIS_CLEAR, 0x80);
+ err = regmap_write(data->regmap, ADM9240_REG_CHASSIS_CLEAR, 0x80);
data->valid = 0; /* Force cache refresh */
mutex_unlock(&data->update_lock);
- dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
+ if (err < 0)
+ return err;
+ dev_dbg(&data->client->dev, "chassis intrusion latch cleared\n");
return count;
}
return 0;
}
-static void adm9240_init_client(struct i2c_client *client)
+static int adm9240_init_client(struct i2c_client *client, struct adm9240_data *data)
{
- struct adm9240_data *data = i2c_get_clientdata(client);
- u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG);
- u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3;
+ u8 conf, mode;
+ int err;
+
+ err = regmap_raw_read(data->regmap, ADM9240_REG_CONFIG, &conf, 1);
+ if (err < 0)
+ return err;
+ err = regmap_raw_read(data->regmap, ADM9240_REG_TEMP_CONF, &mode, 1);
+ if (err < 0)
+ return err;
+ mode &= 3;
data->vrm = vid_which_vrm(); /* need this to report vid as mV */
int i;
for (i = 0; i < 6; i++) {
- i2c_smbus_write_byte_data(client,
- ADM9240_REG_IN_MIN(i), 0);
- i2c_smbus_write_byte_data(client,
- ADM9240_REG_IN_MAX(i), 255);
+ err = regmap_write(data->regmap,
+ ADM9240_REG_IN_MIN(i), 0);
+ if (err < 0)
+ return err;
+ err = regmap_write(data->regmap,
+ ADM9240_REG_IN_MAX(i), 255);
+ if (err < 0)
+ return err;
+ }
+ for (i = 0; i < 2; i++) {
+ err = regmap_write(data->regmap,
+ ADM9240_REG_FAN_MIN(i), 255);
+ if (err < 0)
+ return err;
+ }
+ for (i = 0; i < 2; i++) {
+ err = regmap_write(data->regmap,
+ ADM9240_REG_TEMP_MAX(i), 127);
+ if (err < 0)
+ return err;
}
- i2c_smbus_write_byte_data(client,
- ADM9240_REG_FAN_MIN(0), 255);
- i2c_smbus_write_byte_data(client,
- ADM9240_REG_FAN_MIN(1), 255);
- i2c_smbus_write_byte_data(client,
- ADM9240_REG_TEMP_MAX(0), 127);
- i2c_smbus_write_byte_data(client,
- ADM9240_REG_TEMP_MAX(1), 127);
/* start measurement cycle */
- i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1);
+ err = regmap_write(data->regmap, ADM9240_REG_CONFIG, 1);
+ if (err < 0)
+ return err;
dev_info(&client->dev,
"cold start: config was 0x%02x mode %u\n", conf, mode);
}
+
+ return 0;
}
-static int adm9240_probe(struct i2c_client *new_client,
- const struct i2c_device_id *id)
+static const struct regmap_config adm9240_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static int adm9240_probe(struct i2c_client *new_client)
{
struct device *dev = &new_client->dev;
struct device *hwmon_dev;
struct adm9240_data *data;
+ int err;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(new_client, data);
data->client = new_client;
mutex_init(&data->update_lock);
+ data->regmap = devm_regmap_init_i2c(new_client, &adm9240_regmap_config);
+ if (IS_ERR(data->regmap))
+ return PTR_ERR(data->regmap);
- adm9240_init_client(new_client);
+ err = adm9240_init_client(new_client, data);
+ if (err < 0)
+ return err;
hwmon_dev = devm_hwmon_device_register_with_groups(dev,
new_client->name,
.driver = {
.name = "adm9240",
},
- .probe = adm9240_probe,
+ .probe_new = adm9240_probe,
.id_table = adm9240_id,
.detect = adm9240_detect,
.address_list = normal_i2c,
projects / linux-2.6-microblaze.git / blobdiff