2 /* linux/drivers/hwmon/s3c-hwmon.c
8  * S3C24XX/S3C64XX ADC hwmon support
20 #include <linux/hwmon.h>
21 #include <linux/hwmon-sysfs.h>
24 #include <linux/platform_data/hwmon-s3c.h>
34  * struct s3c_hwmon - ADC hwmon client information
37  * @hwmon_dev: The hwmon device we created.
51  * @hwmon: Our state.
59 			     struct s3c_hwmon *hwmon, int channel)  in s3c_hwmon_read_ch()  argument
63 	ret = mutex_lock_interruptible(&hwmon->lock);  in s3c_hwmon_read_ch()
69 	ret = s3c_adc_read(hwmon->client, channel);  in s3c_hwmon_read_ch()
70 	mutex_unlock(&hwmon->lock);  in s3c_hwmon_read_ch()
155 	struct s3c_hwmon *hwmon = dev_get_drvdata(dev);  in s3c_hwmon_ch_show()  local
162 	ret = s3c_hwmon_read_ch(dev, hwmon, sen_attr->index);  in s3c_hwmon_ch_show()
194  * s3c_hwmon_create_attr - create hwmon attribute for given channel.
199  * Create the scaled attribute for use with hwmon from the specified
266 	struct s3c_hwmon *hwmon;  in s3c_hwmon_probe()  local
275 	hwmon = devm_kzalloc(&dev->dev, sizeof(struct s3c_hwmon), GFP_KERNEL);  in s3c_hwmon_probe()
276 	if (hwmon == NULL)  in s3c_hwmon_probe()
279 	platform_set_drvdata(dev, hwmon);  in s3c_hwmon_probe()
281 	mutex_init(&hwmon->lock);  in s3c_hwmon_probe()
285 	hwmon->client = s3c_adc_register(dev, NULL, NULL, 0);  in s3c_hwmon_probe()
286 	if (IS_ERR(hwmon->client)) {  in s3c_hwmon_probe()
288 		return PTR_ERR(hwmon->client);  in s3c_hwmon_probe()
297 	/* register with the hwmon core */  in s3c_hwmon_probe()
299 	hwmon->hwmon_dev = hwmon_device_register(&dev->dev);  in s3c_hwmon_probe()
300 	if (IS_ERR(hwmon->hwmon_dev)) {  in s3c_hwmon_probe()
301 		dev_err(&dev->dev, "error registering with hwmon\n");  in s3c_hwmon_probe()
302 		ret = PTR_ERR(hwmon->hwmon_dev);  in s3c_hwmon_probe()
323 					    &hwmon->attrs[i], i);  in s3c_hwmon_probe()
330 							      &hwmon->attrs[i]);  in s3c_hwmon_probe()
339 	hwmon_device_unregister(hwmon->hwmon_dev);  in s3c_hwmon_probe()
345 	s3c_adc_release(hwmon->client);  in s3c_hwmon_probe()
352 	struct s3c_hwmon *hwmon = platform_get_drvdata(dev);  in s3c_hwmon_remove()  local
357 	for (i = 0; i < ARRAY_SIZE(hwmon->attrs); i++)  in s3c_hwmon_remove()
358 		s3c_hwmon_remove_attr(&dev->dev, &hwmon->attrs[i]);  in s3c_hwmon_remove()
360 	hwmon_device_unregister(hwmon->hwmon_dev);  in s3c_hwmon_remove()
361 	s3c_adc_release(hwmon->client);  in s3c_hwmon_remove()
368 		.name		= "s3c-hwmon",
377 MODULE_DESCRIPTION("S3C ADC HWMon driver");
379 MODULE_ALIAS("platform:s3c-hwmon");