mutex_init(&map->lock);
map->format.buf_size = (config->reg_bits + config->val_bits) / 8;
map->format.reg_bytes = config->reg_bits / 8;
+ map->format.pad_bytes = config->pad_bits / 8;
map->format.val_bytes = config->val_bits / 8;
+ map->format.buf_size += map->format.pad_bytes;
map->dev = dev;
map->bus = bus;
map->max_register = config->max_register;
!(map->format.format_reg && map->format.format_val))
goto err_map;
- map->work_buf = kmalloc(map->format.buf_size, GFP_KERNEL);
+ map->work_buf = kzalloc(map->format.buf_size, GFP_KERNEL);
if (map->work_buf == NULL) {
ret = -ENOMEM;
goto err_map;
* send the work_buf directly, otherwise try to do a gather
* write.
*/
- if (val == map->work_buf + map->format.reg_bytes)
+ if (val == (map->work_buf + map->format.pad_bytes +
+ map->format.reg_bytes))
ret = map->bus->write(map->dev, map->work_buf,
- map->format.reg_bytes + val_len);
+ map->format.reg_bytes +
+ map->format.pad_bytes +
+ val_len);
else if (map->bus->gather_write)
ret = map->bus->gather_write(map->dev, map->work_buf,
- map->format.reg_bytes,
+ map->format.reg_bytes +
+ map->format.pad_bytes,
val, val_len);
/* If that didn't work fall back on linearising by hand. */
if (ret == -ENOTSUPP) {
- len = map->format.reg_bytes + val_len;
- buf = kmalloc(len, GFP_KERNEL);
+ len = map->format.reg_bytes + map->format.pad_bytes + val_len;
+ buf = kzalloc(len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, map->work_buf, map->format.reg_bytes);
- memcpy(buf + map->format.reg_bytes, val, val_len);
+ memcpy(buf + map->format.reg_bytes + map->format.pad_bytes,
+ val, val_len);
ret = map->bus->write(map->dev, buf, len);
kfree(buf);
return ret;
} else {
- map->format.format_val(map->work_buf + map->format.reg_bytes,
- val);
+ map->format.format_val(map->work_buf + map->format.reg_bytes
+ + map->format.pad_bytes, val);
return _regmap_raw_write(map, reg,
- map->work_buf + map->format.reg_bytes,
+ map->work_buf +
+ map->format.reg_bytes +
+ map->format.pad_bytes,
map->format.val_bytes);
}
}
trace_regmap_hw_read_start(map->dev, reg,
val_len / map->format.val_bytes);
- ret = map->bus->read(map->dev, map->work_buf, map->format.reg_bytes,
+ ret = map->bus->read(map->dev, map->work_buf,
+ map->format.reg_bytes + map->format.pad_bytes,
val, val_len);
trace_regmap_hw_read_done(map->dev, reg,