2 /* Texas Instruments TMP108 SMBus temperature sensor driver
22 #define	DRIVER_NAME "tmp108"
74 struct tmp108 {  struct
80 /* convert 12-bit TMP108 register value to milliCelsius */
86 /* convert milliCelsius to left adjusted 12-bit TMP108 register value */
95 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_read()  local
101 			err = regmap_read(tmp108->regmap, TMP108_REG_CONF,  in tmp108_read()
128 		if (time_before(jiffies, tmp108->ready_time)) {  in tmp108_read()
133 		err = regmap_read(tmp108->regmap, TMP108_REG_TEMP, &regval);  in tmp108_read()
140 		err = regmap_read(tmp108->regmap, attr == hwmon_temp_min ?  in tmp108_read()
148 		err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &regval);  in tmp108_read()
156 		err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &regval);  in tmp108_read()
174 		err = regmap_read(tmp108->regmap, attr == hwmon_temp_min_hyst ?  in tmp108_read()
194 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_write()  local
208 			return regmap_update_bits(tmp108->regmap,  in tmp108_write()
220 		return regmap_write(tmp108->regmap,  in tmp108_write()
227 		err = regmap_read(tmp108->regmap,  in tmp108_write()
245 		return regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,  in tmp108_write()
299 	struct tmp108 *tmp108 = data;  in tmp108_restore_config()  local
301 	regmap_write(tmp108->regmap, TMP108_REG_CONF, tmp108->orig_config);  in tmp108_restore_config()
330 	struct tmp108 *tmp108;  in tmp108_common_probe()  local
338 	tmp108 = devm_kzalloc(dev, sizeof(*tmp108), GFP_KERNEL);  in tmp108_common_probe()
339 	if (!tmp108)  in tmp108_common_probe()
342 	dev_set_drvdata(dev, tmp108);  in tmp108_common_probe()
343 	tmp108->regmap = regmap;  in tmp108_common_probe()
345 	err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &config);  in tmp108_common_probe()
350 	tmp108->orig_config = config;  in tmp108_common_probe()
359 	err = regmap_write(tmp108->regmap, TMP108_REG_CONF, config);  in tmp108_common_probe()
365 	tmp108->ready_time = jiffies;  in tmp108_common_probe()
366 	if ((tmp108->orig_config & TMP108_CONF_MODE_MASK) ==  in tmp108_common_probe()
368 		tmp108->ready_time +=  in tmp108_common_probe()
371 	err = devm_add_action_or_reset(dev, tmp108_restore_config, tmp108);  in tmp108_common_probe()
378 							 tmp108,  in tmp108_common_probe()
403 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_suspend()  local
405 	return regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,  in tmp108_suspend()
411 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_resume()  local
414 	err = regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,  in tmp108_resume()
416 	tmp108->ready_time = jiffies +  in tmp108_resume()
425 	{ "tmp108" },
432 	{ .compatible = "ti,tmp108", },
477 MODULE_DESCRIPTION("Texas Instruments TMP108 temperature sensor driver");