[linux-2.6-block.git] / drivers / rtc / rtc-hid-sensor-time.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * HID Sensor Time Driver
 * Copyright (c) 2012, Alexander Holler.
 */
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/hid-sensor-hub.h>
#include <linux/iio/iio.h>
#include <linux/rtc.h>

enum hid_time_channel {
	CHANNEL_SCAN_INDEX_YEAR,
	CHANNEL_SCAN_INDEX_MONTH,
	CHANNEL_SCAN_INDEX_DAY,
	CHANNEL_SCAN_INDEX_HOUR,
	CHANNEL_SCAN_INDEX_MINUTE,
	CHANNEL_SCAN_INDEX_SECOND,
	TIME_RTC_CHANNEL_MAX,
};

struct hid_time_state {
	struct hid_sensor_hub_callbacks callbacks;
	struct hid_sensor_common common_attributes;
	struct hid_sensor_hub_attribute_info info[TIME_RTC_CHANNEL_MAX];
	struct rtc_time last_time;
	spinlock_t lock_last_time;
	struct completion comp_last_time;
	struct rtc_time time_buf;
	struct rtc_device *rtc;
};

static const u32 hid_time_addresses[TIME_RTC_CHANNEL_MAX] = {
	HID_USAGE_SENSOR_TIME_YEAR,
	HID_USAGE_SENSOR_TIME_MONTH,
	HID_USAGE_SENSOR_TIME_DAY,
	HID_USAGE_SENSOR_TIME_HOUR,
	HID_USAGE_SENSOR_TIME_MINUTE,
	HID_USAGE_SENSOR_TIME_SECOND,
};

/* Channel names for verbose error messages */
static const char * const hid_time_channel_names[TIME_RTC_CHANNEL_MAX] = {
	"year", "month", "day", "hour", "minute", "second",
};

/* Callback handler to send event after all samples are received and captured */
static int hid_time_proc_event(struct hid_sensor_hub_device *hsdev,
				unsigned usage_id, void *priv)
{
	unsigned long flags;
	struct hid_time_state *time_state = platform_get_drvdata(priv);

	spin_lock_irqsave(&time_state->lock_last_time, flags);
	time_state->last_time = time_state->time_buf;
	spin_unlock_irqrestore(&time_state->lock_last_time, flags);
	complete(&time_state->comp_last_time);
	return 0;
}

static u32 hid_time_value(size_t raw_len, char *raw_data)
{
	switch (raw_len) {
	case 1:
		return *(u8 *)raw_data;
	case 2:
		return *(u16 *)raw_data;
	case 4:
		return *(u32 *)raw_data;
	default:
		return (u32)(~0U); /* 0xff... or -1 to denote an error */
	}
}

static int hid_time_capture_sample(struct hid_sensor_hub_device *hsdev,
				unsigned usage_id, size_t raw_len,
				char *raw_data, void *priv)
{
	struct hid_time_state *time_state = platform_get_drvdata(priv);
	struct rtc_time *time_buf = &time_state->time_buf;

	switch (usage_id) {
	case HID_USAGE_SENSOR_TIME_YEAR:
		/*
		 * The draft for HID-sensors (HUTRR39) currently doesn't define
		 * the range for the year attribute. Therefor we support
		 * 8 bit (0-99) and 16 or 32 bits (full) as size for the year.
		 */
		if (raw_len == 1) {
			time_buf->tm_year = *(u8 *)raw_data;
			if (time_buf->tm_year < 70)
				/* assume we are in 1970...2069 */
				time_buf->tm_year += 100;
		} else
			time_buf->tm_year =
				(int)hid_time_value(raw_len, raw_data)-1900;
		break;
	case HID_USAGE_SENSOR_TIME_MONTH:
		/* sensors are sending the month as 1-12, we need 0-11 */
		time_buf->tm_mon = (int)hid_time_value(raw_len, raw_data)-1;
		break;
	case HID_USAGE_SENSOR_TIME_DAY:
		time_buf->tm_mday = (int)hid_time_value(raw_len, raw_data);
		break;
	case HID_USAGE_SENSOR_TIME_HOUR:
		time_buf->tm_hour = (int)hid_time_value(raw_len, raw_data);
		break;
	case HID_USAGE_SENSOR_TIME_MINUTE:
		time_buf->tm_min = (int)hid_time_value(raw_len, raw_data);
		break;
	case HID_USAGE_SENSOR_TIME_SECOND:
		time_buf->tm_sec = (int)hid_time_value(raw_len, raw_data);
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

/* small helper, haven't found any other way */
static const char *hid_time_attrib_name(u32 attrib_id)
{
	static const char unknown[] = "unknown";
	unsigned i;

	for (i = 0; i < TIME_RTC_CHANNEL_MAX; ++i) {
		if (hid_time_addresses[i] == attrib_id)
			return hid_time_channel_names[i];
	}
	return unknown; /* should never happen */
}

static int hid_time_parse_report(struct platform_device *pdev,
				struct hid_sensor_hub_device *hsdev,
				unsigned usage_id,
				struct hid_time_state *time_state)
{
	int report_id, i;

	for (i = 0; i < TIME_RTC_CHANNEL_MAX; ++i)
		if (sensor_hub_input_get_attribute_info(hsdev,
				HID_INPUT_REPORT, usage_id,
				hid_time_addresses[i],
				&time_state->info[i]) < 0)
			return -EINVAL;
	/* Check the (needed) attributes for sanity */
	report_id = time_state->info[0].report_id;
	if (report_id < 0) {
		dev_err(&pdev->dev, "bad report ID!\n");
		return -EINVAL;
	}
	for (i = 0; i < TIME_RTC_CHANNEL_MAX; ++i) {
		if (time_state->info[i].report_id != report_id) {
			dev_err(&pdev->dev,
				"not all needed attributes inside the same report!\n");
			return -EINVAL;
		}
		if (time_state->info[i].size == 3 ||
				time_state->info[i].size > 4) {
			dev_err(&pdev->dev,
				"attribute '%s' not 8, 16 or 32 bits wide!\n",
				hid_time_attrib_name(
					time_state->info[i].attrib_id));
			return -EINVAL;
		}
		if (time_state->info[i].units !=
				HID_USAGE_SENSOR_UNITS_NOT_SPECIFIED &&
				/* allow attribute seconds with unit seconds */
				!(time_state->info[i].attrib_id ==
				HID_USAGE_SENSOR_TIME_SECOND &&
				time_state->info[i].units ==
				HID_USAGE_SENSOR_UNITS_SECOND)) {
			dev_err(&pdev->dev,
				"attribute '%s' hasn't a unit of type 'none'!\n",
				hid_time_attrib_name(
					time_state->info[i].attrib_id));
			return -EINVAL;
		}
		if (time_state->info[i].unit_expo) {
			dev_err(&pdev->dev,
				"attribute '%s' hasn't a unit exponent of 1!\n",
				hid_time_attrib_name(
					time_state->info[i].attrib_id));
			return -EINVAL;
		}
	}

	return 0;
}

static int hid_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
	unsigned long flags;
	struct hid_time_state *time_state = dev_get_drvdata(dev);
	int ret;

	reinit_completion(&time_state->comp_last_time);
	/* get a report with all values through requesting one value */
	sensor_hub_input_attr_get_raw_value(time_state->common_attributes.hsdev,
			HID_USAGE_SENSOR_TIME, hid_time_addresses[0],
			time_state->info[0].report_id, SENSOR_HUB_SYNC, false);
	/* wait for all values (event) */
	ret = wait_for_completion_killable_timeout(
			&time_state->comp_last_time, HZ*6);
	if (ret > 0) {
		/* no error */
		spin_lock_irqsave(&time_state->lock_last_time, flags);
		*tm = time_state->last_time;
		spin_unlock_irqrestore(&time_state->lock_last_time, flags);
		return 0;
	}
	if (!ret)
		return -EIO; /* timeouted */
	return ret; /* killed (-ERESTARTSYS) */
}

static const struct rtc_class_ops hid_time_rtc_ops = {
	.read_time = hid_rtc_read_time,
};

static int hid_time_probe(struct platform_device *pdev)
{
	int ret = 0;
	struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
	struct hid_time_state *time_state = devm_kzalloc(&pdev->dev,
		sizeof(struct hid_time_state), GFP_KERNEL);

	if (time_state == NULL)
		return -ENOMEM;

	platform_set_drvdata(pdev, time_state);

	spin_lock_init(&time_state->lock_last_time);
	init_completion(&time_state->comp_last_time);
	time_state->common_attributes.hsdev = hsdev;
	time_state->common_attributes.pdev = pdev;

	ret = hid_sensor_parse_common_attributes(hsdev,
				HID_USAGE_SENSOR_TIME,
				&time_state->common_attributes);
	if (ret) {
		dev_err(&pdev->dev, "failed to setup common attributes!\n");
		return ret;
	}

	ret = hid_time_parse_report(pdev, hsdev, HID_USAGE_SENSOR_TIME,
					time_state);
	if (ret) {
		dev_err(&pdev->dev, "failed to setup attributes!\n");
		return ret;
	}

	time_state->callbacks.send_event = hid_time_proc_event;
	time_state->callbacks.capture_sample = hid_time_capture_sample;
	time_state->callbacks.pdev = pdev;
	ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_TIME,
					&time_state->callbacks);
	if (ret < 0) {
		dev_err(&pdev->dev, "register callback failed!\n");
		return ret;
	}

	ret = sensor_hub_device_open(hsdev);
	if (ret) {
		dev_err(&pdev->dev, "failed to open sensor hub device!\n");
		goto err_open;
	}

	/*
	 * Enable HID input processing early in order to be able to read the
	 * clock already in devm_rtc_device_register().
	 */
	hid_device_io_start(hsdev->hdev);

	time_state->rtc = devm_rtc_device_register(&pdev->dev,
					"hid-sensor-time", &hid_time_rtc_ops,
					THIS_MODULE);

	if (IS_ERR(time_state->rtc)) {
		hid_device_io_stop(hsdev->hdev);
		ret = PTR_ERR(time_state->rtc);
		time_state->rtc = NULL;
		dev_err(&pdev->dev, "rtc device register failed!\n");
		goto err_rtc;
	}

	return ret;

err_rtc:
	sensor_hub_device_close(hsdev);
err_open:
	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);
	return ret;
}

static int hid_time_remove(struct platform_device *pdev)
{
	struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);

	sensor_hub_device_close(hsdev);
	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);

	return 0;
}

static const struct platform_device_id hid_time_ids[] = {
	{
		/* Format: HID-SENSOR-usage_id_in_hex_lowercase */
		.name = "HID-SENSOR-2000a0",
	},
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, hid_time_ids);

static struct platform_driver hid_time_platform_driver = {
	.id_table = hid_time_ids,
	.driver = {
		.name	= KBUILD_MODNAME,
	},
	.probe		= hid_time_probe,
	.remove		= hid_time_remove,
};
module_platform_driver(hid_time_platform_driver);

MODULE_DESCRIPTION("HID Sensor Time");
MODULE_AUTHOR("Alexander Holler <holler@ahsoftware.de>");
MODULE_LICENSE("GPL");
Commit	Line	Data
a61127c2	1	// SPDX-License-Identifier: GPL-2.0-only
62e00cb9 AH	2	/*
	3	* HID Sensor Time Driver
	4	* Copyright (c) 2012, Alexander Holler.
62e00cb9 AH	5	*/
	6	#include <linux/device.h>
	7	#include <linux/platform_device.h>
	8	#include <linux/module.h>
	9	#include <linux/hid-sensor-hub.h>
	10	#include <linux/iio/iio.h>
	11	#include <linux/rtc.h>
	12
62e00cb9 AH	13	enum hid_time_channel {
	14	CHANNEL_SCAN_INDEX_YEAR,
	15	CHANNEL_SCAN_INDEX_MONTH,
	16	CHANNEL_SCAN_INDEX_DAY,
	17	CHANNEL_SCAN_INDEX_HOUR,
	18	CHANNEL_SCAN_INDEX_MINUTE,
	19	CHANNEL_SCAN_INDEX_SECOND,
	20	TIME_RTC_CHANNEL_MAX,
	21	};
	22
	23	struct hid_time_state {
	24	struct hid_sensor_hub_callbacks callbacks;
e07c6d17	25	struct hid_sensor_common common_attributes;
62e00cb9 AH	26	struct hid_sensor_hub_attribute_info info[TIME_RTC_CHANNEL_MAX];
	27	struct rtc_time last_time;
	28	spinlock_t lock_last_time;
	29	struct completion comp_last_time;
	30	struct rtc_time time_buf;
	31	struct rtc_device *rtc;
	32	};
	33
	34	static const u32 hid_time_addresses[TIME_RTC_CHANNEL_MAX] = {
	35	HID_USAGE_SENSOR_TIME_YEAR,
	36	HID_USAGE_SENSOR_TIME_MONTH,
	37	HID_USAGE_SENSOR_TIME_DAY,
	38	HID_USAGE_SENSOR_TIME_HOUR,
	39	HID_USAGE_SENSOR_TIME_MINUTE,
	40	HID_USAGE_SENSOR_TIME_SECOND,
	41	};
	42
	43	/* Channel names for verbose error messages */
	44	static const char * const hid_time_channel_names[TIME_RTC_CHANNEL_MAX] = {
	45	"year", "month", "day", "hour", "minute", "second",
	46	};
	47
	48	/* Callback handler to send event after all samples are received and captured */
	49	static int hid_time_proc_event(struct hid_sensor_hub_device *hsdev,
	50	unsigned usage_id, void *priv)
	51	{
	52	unsigned long flags;
	53	struct hid_time_state *time_state = platform_get_drvdata(priv);
	54
	55	spin_lock_irqsave(&time_state->lock_last_time, flags);
	56	time_state->last_time = time_state->time_buf;
	57	spin_unlock_irqrestore(&time_state->lock_last_time, flags);
	58	complete(&time_state->comp_last_time);
	59	return 0;
	60	}
	61
c67d96e3 AH	62	static u32 hid_time_value(size_t raw_len, char *raw_data)
	63	{
	64	switch (raw_len) {
	65	case 1:
	66	return (u8 )raw_data;
	67	case 2:
	68	return (u16 )raw_data;
	69	case 4:
	70	return (u32 )raw_data;
	71	default:
	72	return (u32)(~0U); /* 0xff... or -1 to denote an error */
	73	}
	74	}
	75
62e00cb9 AH	76	static int hid_time_capture_sample(struct hid_sensor_hub_device *hsdev,
	77	unsigned usage_id, size_t raw_len,
	78	char raw_data, void priv)
	79	{
	80	struct hid_time_state *time_state = platform_get_drvdata(priv);
	81	struct rtc_time *time_buf = &time_state->time_buf;
	82
	83	switch (usage_id) {
	84	case HID_USAGE_SENSOR_TIME_YEAR:
c67d96e3 AH	85	/*
	86	* The draft for HID-sensors (HUTRR39) currently doesn't define
	87	* the range for the year attribute. Therefor we support
	88	* 8 bit (0-99) and 16 or 32 bits (full) as size for the year.
	89	*/
7e3c741a AH	90	if (raw_len == 1) {
	91	time_buf->tm_year = (u8 )raw_data;
	92	if (time_buf->tm_year < 70)
	93	/* assume we are in 1970...2069 */
	94	time_buf->tm_year += 100;
	95	} else
c67d96e3 AH	96	time_buf->tm_year =
c67d96e3 AH	97	(int)hid_time_value(raw_len, raw_data)-1900;
62e00cb9 AH	98	break;
62e00cb9 AH	99	case HID_USAGE_SENSOR_TIME_MONTH:
c67d96e3 AH	100	/* sensors are sending the month as 1-12, we need 0-11 */
c67d96e3 AH	101	time_buf->tm_mon = (int)hid_time_value(raw_len, raw_data)-1;
62e00cb9 AH	102	break;
62e00cb9 AH	103	case HID_USAGE_SENSOR_TIME_DAY:
c67d96e3	104	time_buf->tm_mday = (int)hid_time_value(raw_len, raw_data);
62e00cb9 AH	105	break;
62e00cb9 AH	106	case HID_USAGE_SENSOR_TIME_HOUR:
c67d96e3	107	time_buf->tm_hour = (int)hid_time_value(raw_len, raw_data);
62e00cb9 AH	108	break;
62e00cb9 AH	109	case HID_USAGE_SENSOR_TIME_MINUTE:
c67d96e3	110	time_buf->tm_min = (int)hid_time_value(raw_len, raw_data);
62e00cb9 AH	111	break;
62e00cb9 AH	112	case HID_USAGE_SENSOR_TIME_SECOND:
c67d96e3	113	time_buf->tm_sec = (int)hid_time_value(raw_len, raw_data);
62e00cb9 AH	114	break;
	115	default:
	116	return -EINVAL;
	117	}
	118	return 0;
	119	}
	120
	121	/* small helper, haven't found any other way */
	122	static const char *hid_time_attrib_name(u32 attrib_id)
	123	{
	124	static const char unknown[] = "unknown";
	125	unsigned i;
	126
	127	for (i = 0; i < TIME_RTC_CHANNEL_MAX; ++i) {
	128	if (hid_time_addresses[i] == attrib_id)
	129	return hid_time_channel_names[i];
	130	}
	131	return unknown; /* should never happen */
	132	}
	133
	134	static int hid_time_parse_report(struct platform_device *pdev,
	135	struct hid_sensor_hub_device *hsdev,
	136	unsigned usage_id,
	137	struct hid_time_state *time_state)
	138	{
	139	int report_id, i;
	140
	141	for (i = 0; i < TIME_RTC_CHANNEL_MAX; ++i)
	142	if (sensor_hub_input_get_attribute_info(hsdev,
	143	HID_INPUT_REPORT, usage_id,
	144	hid_time_addresses[i],
	145	&time_state->info[i]) < 0)
	146	return -EINVAL;
	147	/* Check the (needed) attributes for sanity */
	148	report_id = time_state->info[0].report_id;
	149	if (report_id < 0) {
	150	dev_err(&pdev->dev, "bad report ID!\n");
	151	return -EINVAL;
	152	}
	153	for (i = 0; i < TIME_RTC_CHANNEL_MAX; ++i) {
	154	if (time_state->info[i].report_id != report_id) {
	155	dev_err(&pdev->dev,
	156	"not all needed attributes inside the same report!\n");
	157	return -EINVAL;
	158	}
c67d96e3 AH	159	if (time_state->info[i].size == 3 \|\|
	160	time_state->info[i].size > 4) {
	161	dev_err(&pdev->dev,
	162	"attribute '%s' not 8, 16 or 32 bits wide!\n",
7e3c741a AH	163	hid_time_attrib_name(
7e3c741a AH	164	time_state->info[i].attrib_id));
c67d96e3	165	return -EINVAL;
62e00cb9 AH	166	}
	167	if (time_state->info[i].units !=
	168	HID_USAGE_SENSOR_UNITS_NOT_SPECIFIED &&
	169	/* allow attribute seconds with unit seconds */
	170	!(time_state->info[i].attrib_id ==
	171	HID_USAGE_SENSOR_TIME_SECOND &&
	172	time_state->info[i].units ==
	173	HID_USAGE_SENSOR_UNITS_SECOND)) {
	174	dev_err(&pdev->dev,
	175	"attribute '%s' hasn't a unit of type 'none'!\n",
	176	hid_time_attrib_name(
	177	time_state->info[i].attrib_id));
	178	return -EINVAL;
	179	}
	180	if (time_state->info[i].unit_expo) {
	181	dev_err(&pdev->dev,
	182	"attribute '%s' hasn't a unit exponent of 1!\n",
	183	hid_time_attrib_name(
	184	time_state->info[i].attrib_id));
	185	return -EINVAL;
	186	}
	187	}
	188
	189	return 0;
	190	}
	191
	192	static int hid_rtc_read_time(struct device dev, struct rtc_time tm)
	193	{
	194	unsigned long flags;
527bd754	195	struct hid_time_state *time_state = dev_get_drvdata(dev);
62e00cb9 AH	196	int ret;
62e00cb9 AH	197
16735d02	198	reinit_completion(&time_state->comp_last_time);
62e00cb9 AH	199	/* get a report with all values through requesting one value */
	200	sensor_hub_input_attr_get_raw_value(time_state->common_attributes.hsdev,
	201	HID_USAGE_SENSOR_TIME, hid_time_addresses[0],
0145b505	202	time_state->info[0].report_id, SENSOR_HUB_SYNC, false);
62e00cb9 AH	203	/* wait for all values (event) */
	204	ret = wait_for_completion_killable_timeout(
	205	&time_state->comp_last_time, HZ*6);
	206	if (ret > 0) {
	207	/* no error */
	208	spin_lock_irqsave(&time_state->lock_last_time, flags);
	209	*tm = time_state->last_time;
	210	spin_unlock_irqrestore(&time_state->lock_last_time, flags);
	211	return 0;
	212	}
	213	if (!ret)
	214	return -EIO; /* timeouted */
	215	return ret; /* killed (-ERESTARTSYS) */
	216	}
	217
	218	static const struct rtc_class_ops hid_time_rtc_ops = {
	219	.read_time = hid_rtc_read_time,
	220	};
	221
	222	static int hid_time_probe(struct platform_device *pdev)
	223	{
	224	int ret = 0;
d5ceede8	225	struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
62e00cb9 AH	226	struct hid_time_state *time_state = devm_kzalloc(&pdev->dev,
	227	sizeof(struct hid_time_state), GFP_KERNEL);
	228
	229	if (time_state == NULL)
	230	return -ENOMEM;
	231
	232	platform_set_drvdata(pdev, time_state);
	233
b775dce9	234	spin_lock_init(&time_state->lock_last_time);
62e00cb9 AH	235	init_completion(&time_state->comp_last_time);
	236	time_state->common_attributes.hsdev = hsdev;
	237	time_state->common_attributes.pdev = pdev;
	238
	239	ret = hid_sensor_parse_common_attributes(hsdev,
	240	HID_USAGE_SENSOR_TIME,
	241	&time_state->common_attributes);
	242	if (ret) {
	243	dev_err(&pdev->dev, "failed to setup common attributes!\n");
	244	return ret;
	245	}
	246
	247	ret = hid_time_parse_report(pdev, hsdev, HID_USAGE_SENSOR_TIME,
	248	time_state);
	249	if (ret) {
	250	dev_err(&pdev->dev, "failed to setup attributes!\n");
	251	return ret;
	252	}
	253
	254	time_state->callbacks.send_event = hid_time_proc_event;
	255	time_state->callbacks.capture_sample = hid_time_capture_sample;
	256	time_state->callbacks.pdev = pdev;
	257	ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_TIME,
	258	&time_state->callbacks);
	259	if (ret < 0) {
	260	dev_err(&pdev->dev, "register callback failed!\n");
	261	return ret;
	262	}
	263
476b9547 SP	264	ret = sensor_hub_device_open(hsdev);
	265	if (ret) {
	266	dev_err(&pdev->dev, "failed to open sensor hub device!\n");
	267	goto err_open;
	268	}
	269
406bf318 AH	270	/*
	271	* Enable HID input processing early in order to be able to read the
	272	* clock already in devm_rtc_device_register().
	273	*/
	274	hid_device_io_start(hsdev->hdev);
	275
479243b2 JH	276	time_state->rtc = devm_rtc_device_register(&pdev->dev,
	277	"hid-sensor-time", &hid_time_rtc_ops,
	278	THIS_MODULE);
62e00cb9	279
e73ef755	280	if (IS_ERR(time_state->rtc)) {
406bf318	281	hid_device_io_stop(hsdev->hdev);
e73ef755	282	ret = PTR_ERR(time_state->rtc);
7707bda3	283	time_state->rtc = NULL;
62e00cb9	284	dev_err(&pdev->dev, "rtc device register failed!\n");
476b9547	285	goto err_rtc;
62e00cb9 AH	286	}
	287
	288	return ret;
476b9547 SP	289
	290	err_rtc:
	291	sensor_hub_device_close(hsdev);
	292	err_open:
	293	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);
	294	return ret;
62e00cb9 AH	295	}
	296
	297	static int hid_time_remove(struct platform_device *pdev)
	298	{
d5ceede8	299	struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
62e00cb9	300
476b9547	301	sensor_hub_device_close(hsdev);
62e00cb9 AH	302	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TIME);
	303
	304	return 0;
	305	}
	306
19fd685f	307	static const struct platform_device_id hid_time_ids[] = {
ae259925 AH	308	{
	309	/* Format: HID-SENSOR-usage_id_in_hex_lowercase */
	310	.name = "HID-SENSOR-2000a0",
	311	},
	312	{ /* sentinel */ }
	313	};
	314	MODULE_DEVICE_TABLE(platform, hid_time_ids);
	315
62e00cb9	316	static struct platform_driver hid_time_platform_driver = {
ae259925	317	.id_table = hid_time_ids,
62e00cb9	318	.driver = {
ae259925	319	.name = KBUILD_MODNAME,
62e00cb9 AH	320	},
	321	.probe = hid_time_probe,
	322	.remove = hid_time_remove,
	323	};
	324	module_platform_driver(hid_time_platform_driver);
	325
	326	MODULE_DESCRIPTION("HID Sensor Time");
	327	MODULE_AUTHOR("Alexander Holler <holler@ahsoftware.de>");
	328	MODULE_LICENSE("GPL");