2 /* Texas Instruments TMP108 SMBus temperature sensor driver
21 #define	DRIVER_NAME "tmp108"
73 struct tmp108 {  struct
79 /* convert 12-bit TMP108 register value to milliCelsius */
85 /* convert milliCelsius to left adjusted 12-bit TMP108 register value */
94 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_read()  argument
100 			err = regmap_read(tmp108->regmap, TMP108_REG_CONF,  in tmp108_read()
127 		if (time_before(jiffies, tmp108->ready_time)) {  in tmp108_read()
132 		err = regmap_read(tmp108->regmap, TMP108_REG_TEMP, &regval);  in tmp108_read()
139 		err = regmap_read(tmp108->regmap, attr == hwmon_temp_min ?  in tmp108_read()
147 		err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &regval);  in tmp108_read()
155 		err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &regval);  in tmp108_read()
173 		err = regmap_read(tmp108->regmap, attr == hwmon_temp_min_hyst ?  in tmp108_read()
193 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_write()  local
207 			return regmap_update_bits(tmp108->regmap,  in tmp108_write()
219 		return regmap_write(tmp108->regmap,  in tmp108_write()
226 		err = regmap_read(tmp108->regmap,  in tmp108_write()
244 		return regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,  in tmp108_write()
298 	struct tmp108 *tmp108 = data;  in tmp108_restore_config()  local
300 	regmap_write(tmp108->regmap, TMP108_REG_CONF, tmp108->orig_config);  in tmp108_restore_config()
330 	struct tmp108 *tmp108;  in tmp108_probe()  local
341 	tmp108 = devm_kzalloc(dev, sizeof(*tmp108), GFP_KERNEL);  in tmp108_probe()
342 	if (!tmp108)  in tmp108_probe()
345 	dev_set_drvdata(dev, tmp108);  in tmp108_probe()
347 	tmp108->regmap = devm_regmap_init_i2c(client, &tmp108_regmap_config);  in tmp108_probe()
348 	if (IS_ERR(tmp108->regmap)) {  in tmp108_probe()
349 		err = PTR_ERR(tmp108->regmap);  in tmp108_probe()
354 	err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &config);  in tmp108_probe()
359 	tmp108->orig_config = config;  in tmp108_probe()
368 	err = regmap_write(tmp108->regmap, TMP108_REG_CONF, config);  in tmp108_probe()
374 	tmp108->ready_time = jiffies;  in tmp108_probe()
375 	if ((tmp108->orig_config & TMP108_CONF_MODE_MASK) ==  in tmp108_probe()
377 		tmp108->ready_time +=  in tmp108_probe()
380 	err = devm_add_action_or_reset(dev, tmp108_restore_config, tmp108);  in tmp108_probe()
387 							 tmp108,  in tmp108_probe()
395 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_suspend()  local
397 	return regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,  in tmp108_suspend()
403 	struct tmp108 *tmp108 = dev_get_drvdata(dev);  in tmp108_resume()  local
406 	err = regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,  in tmp108_resume()
408 	tmp108->ready_time = jiffies +  in tmp108_resume()
416 	{ "tmp108", 0 },
423 	{ .compatible = "ti,tmp108", },
442 MODULE_DESCRIPTION("Texas Instruments TMP108 temperature sensor driver");