162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only
262306a36Sopenharmony_ci/*
362306a36Sopenharmony_ci * VTI CMA3000_D0x Accelerometer driver
462306a36Sopenharmony_ci *
562306a36Sopenharmony_ci * Copyright (C) 2010 Texas Instruments
662306a36Sopenharmony_ci * Author: Hemanth V <hemanthv@ti.com>
762306a36Sopenharmony_ci */
862306a36Sopenharmony_ci
962306a36Sopenharmony_ci#include <linux/types.h>
1062306a36Sopenharmony_ci#include <linux/interrupt.h>
1162306a36Sopenharmony_ci#include <linux/delay.h>
1262306a36Sopenharmony_ci#include <linux/slab.h>
1362306a36Sopenharmony_ci#include <linux/input.h>
1462306a36Sopenharmony_ci#include <linux/input/cma3000.h>
1562306a36Sopenharmony_ci#include <linux/module.h>
1662306a36Sopenharmony_ci
1762306a36Sopenharmony_ci#include "cma3000_d0x.h"
1862306a36Sopenharmony_ci
1962306a36Sopenharmony_ci#define CMA3000_WHOAMI      0x00
2062306a36Sopenharmony_ci#define CMA3000_REVID       0x01
2162306a36Sopenharmony_ci#define CMA3000_CTRL        0x02
2262306a36Sopenharmony_ci#define CMA3000_STATUS      0x03
2362306a36Sopenharmony_ci#define CMA3000_RSTR        0x04
2462306a36Sopenharmony_ci#define CMA3000_INTSTATUS   0x05
2562306a36Sopenharmony_ci#define CMA3000_DOUTX       0x06
2662306a36Sopenharmony_ci#define CMA3000_DOUTY       0x07
2762306a36Sopenharmony_ci#define CMA3000_DOUTZ       0x08
2862306a36Sopenharmony_ci#define CMA3000_MDTHR       0x09
2962306a36Sopenharmony_ci#define CMA3000_MDFFTMR     0x0A
3062306a36Sopenharmony_ci#define CMA3000_FFTHR       0x0B
3162306a36Sopenharmony_ci
3262306a36Sopenharmony_ci#define CMA3000_RANGE2G    (1 << 7)
3362306a36Sopenharmony_ci#define CMA3000_RANGE8G    (0 << 7)
3462306a36Sopenharmony_ci#define CMA3000_BUSI2C     (0 << 4)
3562306a36Sopenharmony_ci#define CMA3000_MODEMASK   (7 << 1)
3662306a36Sopenharmony_ci#define CMA3000_GRANGEMASK (1 << 7)
3762306a36Sopenharmony_ci
3862306a36Sopenharmony_ci#define CMA3000_STATUS_PERR    1
3962306a36Sopenharmony_ci#define CMA3000_INTSTATUS_FFDET (1 << 2)
4062306a36Sopenharmony_ci
4162306a36Sopenharmony_ci/* Settling time delay in ms */
4262306a36Sopenharmony_ci#define CMA3000_SETDELAY    30
4362306a36Sopenharmony_ci
4462306a36Sopenharmony_ci/* Delay for clearing interrupt in us */
4562306a36Sopenharmony_ci#define CMA3000_INTDELAY    44
4662306a36Sopenharmony_ci
4762306a36Sopenharmony_ci
4862306a36Sopenharmony_ci/*
4962306a36Sopenharmony_ci * Bit weights in mg for bit 0, other bits need
5062306a36Sopenharmony_ci * multiply factor 2^n. Eight bit is the sign bit.
5162306a36Sopenharmony_ci */
5262306a36Sopenharmony_ci#define BIT_TO_2G  18
5362306a36Sopenharmony_ci#define BIT_TO_8G  71
5462306a36Sopenharmony_ci
5562306a36Sopenharmony_cistruct cma3000_accl_data {
5662306a36Sopenharmony_ci	const struct cma3000_bus_ops *bus_ops;
5762306a36Sopenharmony_ci	const struct cma3000_platform_data *pdata;
5862306a36Sopenharmony_ci
5962306a36Sopenharmony_ci	struct device *dev;
6062306a36Sopenharmony_ci	struct input_dev *input_dev;
6162306a36Sopenharmony_ci
6262306a36Sopenharmony_ci	int bit_to_mg;
6362306a36Sopenharmony_ci	int irq;
6462306a36Sopenharmony_ci
6562306a36Sopenharmony_ci	int g_range;
6662306a36Sopenharmony_ci	u8 mode;
6762306a36Sopenharmony_ci
6862306a36Sopenharmony_ci	struct mutex mutex;
6962306a36Sopenharmony_ci	bool opened;
7062306a36Sopenharmony_ci	bool suspended;
7162306a36Sopenharmony_ci};
7262306a36Sopenharmony_ci
7362306a36Sopenharmony_ci#define CMA3000_READ(data, reg, msg) \
7462306a36Sopenharmony_ci	(data->bus_ops->read(data->dev, reg, msg))
7562306a36Sopenharmony_ci#define CMA3000_SET(data, reg, val, msg) \
7662306a36Sopenharmony_ci	((data)->bus_ops->write(data->dev, reg, val, msg))
7762306a36Sopenharmony_ci
7862306a36Sopenharmony_ci/*
7962306a36Sopenharmony_ci * Conversion for each of the eight modes to g, depending
8062306a36Sopenharmony_ci * on G range i.e 2G or 8G. Some modes always operate in
8162306a36Sopenharmony_ci * 8G.
8262306a36Sopenharmony_ci */
8362306a36Sopenharmony_ci
8462306a36Sopenharmony_cistatic int mode_to_mg[8][2] = {
8562306a36Sopenharmony_ci	{ 0, 0 },
8662306a36Sopenharmony_ci	{ BIT_TO_8G, BIT_TO_2G },
8762306a36Sopenharmony_ci	{ BIT_TO_8G, BIT_TO_2G },
8862306a36Sopenharmony_ci	{ BIT_TO_8G, BIT_TO_8G },
8962306a36Sopenharmony_ci	{ BIT_TO_8G, BIT_TO_8G },
9062306a36Sopenharmony_ci	{ BIT_TO_8G, BIT_TO_2G },
9162306a36Sopenharmony_ci	{ BIT_TO_8G, BIT_TO_2G },
9262306a36Sopenharmony_ci	{ 0, 0},
9362306a36Sopenharmony_ci};
9462306a36Sopenharmony_ci
9562306a36Sopenharmony_cistatic void decode_mg(struct cma3000_accl_data *data, int *datax,
9662306a36Sopenharmony_ci				int *datay, int *dataz)
9762306a36Sopenharmony_ci{
9862306a36Sopenharmony_ci	/* Data in 2's complement, convert to mg */
9962306a36Sopenharmony_ci	*datax = ((s8)*datax) * data->bit_to_mg;
10062306a36Sopenharmony_ci	*datay = ((s8)*datay) * data->bit_to_mg;
10162306a36Sopenharmony_ci	*dataz = ((s8)*dataz) * data->bit_to_mg;
10262306a36Sopenharmony_ci}
10362306a36Sopenharmony_ci
10462306a36Sopenharmony_cistatic irqreturn_t cma3000_thread_irq(int irq, void *dev_id)
10562306a36Sopenharmony_ci{
10662306a36Sopenharmony_ci	struct cma3000_accl_data *data = dev_id;
10762306a36Sopenharmony_ci	int datax, datay, dataz, intr_status;
10862306a36Sopenharmony_ci	u8 ctrl, mode, range;
10962306a36Sopenharmony_ci
11062306a36Sopenharmony_ci	intr_status = CMA3000_READ(data, CMA3000_INTSTATUS, "interrupt status");
11162306a36Sopenharmony_ci	if (intr_status < 0)
11262306a36Sopenharmony_ci		return IRQ_NONE;
11362306a36Sopenharmony_ci
11462306a36Sopenharmony_ci	/* Check if free fall is detected, report immediately */
11562306a36Sopenharmony_ci	if (intr_status & CMA3000_INTSTATUS_FFDET) {
11662306a36Sopenharmony_ci		input_report_abs(data->input_dev, ABS_MISC, 1);
11762306a36Sopenharmony_ci		input_sync(data->input_dev);
11862306a36Sopenharmony_ci	} else {
11962306a36Sopenharmony_ci		input_report_abs(data->input_dev, ABS_MISC, 0);
12062306a36Sopenharmony_ci	}
12162306a36Sopenharmony_ci
12262306a36Sopenharmony_ci	datax = CMA3000_READ(data, CMA3000_DOUTX, "X");
12362306a36Sopenharmony_ci	datay = CMA3000_READ(data, CMA3000_DOUTY, "Y");
12462306a36Sopenharmony_ci	dataz = CMA3000_READ(data, CMA3000_DOUTZ, "Z");
12562306a36Sopenharmony_ci
12662306a36Sopenharmony_ci	ctrl = CMA3000_READ(data, CMA3000_CTRL, "ctrl");
12762306a36Sopenharmony_ci	mode = (ctrl & CMA3000_MODEMASK) >> 1;
12862306a36Sopenharmony_ci	range = (ctrl & CMA3000_GRANGEMASK) >> 7;
12962306a36Sopenharmony_ci
13062306a36Sopenharmony_ci	data->bit_to_mg = mode_to_mg[mode][range];
13162306a36Sopenharmony_ci
13262306a36Sopenharmony_ci	/* Interrupt not for this device */
13362306a36Sopenharmony_ci	if (data->bit_to_mg == 0)
13462306a36Sopenharmony_ci		return IRQ_NONE;
13562306a36Sopenharmony_ci
13662306a36Sopenharmony_ci	/* Decode register values to milli g */
13762306a36Sopenharmony_ci	decode_mg(data, &datax, &datay, &dataz);
13862306a36Sopenharmony_ci
13962306a36Sopenharmony_ci	input_report_abs(data->input_dev, ABS_X, datax);
14062306a36Sopenharmony_ci	input_report_abs(data->input_dev, ABS_Y, datay);
14162306a36Sopenharmony_ci	input_report_abs(data->input_dev, ABS_Z, dataz);
14262306a36Sopenharmony_ci	input_sync(data->input_dev);
14362306a36Sopenharmony_ci
14462306a36Sopenharmony_ci	return IRQ_HANDLED;
14562306a36Sopenharmony_ci}
14662306a36Sopenharmony_ci
14762306a36Sopenharmony_cistatic int cma3000_reset(struct cma3000_accl_data *data)
14862306a36Sopenharmony_ci{
14962306a36Sopenharmony_ci	int val;
15062306a36Sopenharmony_ci
15162306a36Sopenharmony_ci	/* Reset sequence */
15262306a36Sopenharmony_ci	CMA3000_SET(data, CMA3000_RSTR, 0x02, "Reset");
15362306a36Sopenharmony_ci	CMA3000_SET(data, CMA3000_RSTR, 0x0A, "Reset");
15462306a36Sopenharmony_ci	CMA3000_SET(data, CMA3000_RSTR, 0x04, "Reset");
15562306a36Sopenharmony_ci
15662306a36Sopenharmony_ci	/* Settling time delay */
15762306a36Sopenharmony_ci	mdelay(10);
15862306a36Sopenharmony_ci
15962306a36Sopenharmony_ci	val = CMA3000_READ(data, CMA3000_STATUS, "Status");
16062306a36Sopenharmony_ci	if (val < 0) {
16162306a36Sopenharmony_ci		dev_err(data->dev, "Reset failed\n");
16262306a36Sopenharmony_ci		return val;
16362306a36Sopenharmony_ci	}
16462306a36Sopenharmony_ci
16562306a36Sopenharmony_ci	if (val & CMA3000_STATUS_PERR) {
16662306a36Sopenharmony_ci		dev_err(data->dev, "Parity Error\n");
16762306a36Sopenharmony_ci		return -EIO;
16862306a36Sopenharmony_ci	}
16962306a36Sopenharmony_ci
17062306a36Sopenharmony_ci	return 0;
17162306a36Sopenharmony_ci}
17262306a36Sopenharmony_ci
17362306a36Sopenharmony_cistatic int cma3000_poweron(struct cma3000_accl_data *data)
17462306a36Sopenharmony_ci{
17562306a36Sopenharmony_ci	const struct cma3000_platform_data *pdata = data->pdata;
17662306a36Sopenharmony_ci	u8 ctrl = 0;
17762306a36Sopenharmony_ci	int ret;
17862306a36Sopenharmony_ci
17962306a36Sopenharmony_ci	if (data->g_range == CMARANGE_2G) {
18062306a36Sopenharmony_ci		ctrl = (data->mode << 1) | CMA3000_RANGE2G;
18162306a36Sopenharmony_ci	} else if (data->g_range == CMARANGE_8G) {
18262306a36Sopenharmony_ci		ctrl = (data->mode << 1) | CMA3000_RANGE8G;
18362306a36Sopenharmony_ci	} else {
18462306a36Sopenharmony_ci		dev_info(data->dev,
18562306a36Sopenharmony_ci			 "Invalid G range specified, assuming 8G\n");
18662306a36Sopenharmony_ci		ctrl = (data->mode << 1) | CMA3000_RANGE8G;
18762306a36Sopenharmony_ci	}
18862306a36Sopenharmony_ci
18962306a36Sopenharmony_ci	ctrl |= data->bus_ops->ctrl_mod;
19062306a36Sopenharmony_ci
19162306a36Sopenharmony_ci	CMA3000_SET(data, CMA3000_MDTHR, pdata->mdthr,
19262306a36Sopenharmony_ci		    "Motion Detect Threshold");
19362306a36Sopenharmony_ci	CMA3000_SET(data, CMA3000_MDFFTMR, pdata->mdfftmr,
19462306a36Sopenharmony_ci		    "Time register");
19562306a36Sopenharmony_ci	CMA3000_SET(data, CMA3000_FFTHR, pdata->ffthr,
19662306a36Sopenharmony_ci		    "Free fall threshold");
19762306a36Sopenharmony_ci	ret = CMA3000_SET(data, CMA3000_CTRL, ctrl, "Mode setting");
19862306a36Sopenharmony_ci	if (ret < 0)
19962306a36Sopenharmony_ci		return -EIO;
20062306a36Sopenharmony_ci
20162306a36Sopenharmony_ci	msleep(CMA3000_SETDELAY);
20262306a36Sopenharmony_ci
20362306a36Sopenharmony_ci	return 0;
20462306a36Sopenharmony_ci}
20562306a36Sopenharmony_ci
20662306a36Sopenharmony_cistatic int cma3000_poweroff(struct cma3000_accl_data *data)
20762306a36Sopenharmony_ci{
20862306a36Sopenharmony_ci	int ret;
20962306a36Sopenharmony_ci
21062306a36Sopenharmony_ci	ret = CMA3000_SET(data, CMA3000_CTRL, CMAMODE_POFF, "Mode setting");
21162306a36Sopenharmony_ci	msleep(CMA3000_SETDELAY);
21262306a36Sopenharmony_ci
21362306a36Sopenharmony_ci	return ret;
21462306a36Sopenharmony_ci}
21562306a36Sopenharmony_ci
21662306a36Sopenharmony_cistatic int cma3000_open(struct input_dev *input_dev)
21762306a36Sopenharmony_ci{
21862306a36Sopenharmony_ci	struct cma3000_accl_data *data = input_get_drvdata(input_dev);
21962306a36Sopenharmony_ci
22062306a36Sopenharmony_ci	mutex_lock(&data->mutex);
22162306a36Sopenharmony_ci
22262306a36Sopenharmony_ci	if (!data->suspended)
22362306a36Sopenharmony_ci		cma3000_poweron(data);
22462306a36Sopenharmony_ci
22562306a36Sopenharmony_ci	data->opened = true;
22662306a36Sopenharmony_ci
22762306a36Sopenharmony_ci	mutex_unlock(&data->mutex);
22862306a36Sopenharmony_ci
22962306a36Sopenharmony_ci	return 0;
23062306a36Sopenharmony_ci}
23162306a36Sopenharmony_ci
23262306a36Sopenharmony_cistatic void cma3000_close(struct input_dev *input_dev)
23362306a36Sopenharmony_ci{
23462306a36Sopenharmony_ci	struct cma3000_accl_data *data = input_get_drvdata(input_dev);
23562306a36Sopenharmony_ci
23662306a36Sopenharmony_ci	mutex_lock(&data->mutex);
23762306a36Sopenharmony_ci
23862306a36Sopenharmony_ci	if (!data->suspended)
23962306a36Sopenharmony_ci		cma3000_poweroff(data);
24062306a36Sopenharmony_ci
24162306a36Sopenharmony_ci	data->opened = false;
24262306a36Sopenharmony_ci
24362306a36Sopenharmony_ci	mutex_unlock(&data->mutex);
24462306a36Sopenharmony_ci}
24562306a36Sopenharmony_ci
24662306a36Sopenharmony_civoid cma3000_suspend(struct cma3000_accl_data *data)
24762306a36Sopenharmony_ci{
24862306a36Sopenharmony_ci	mutex_lock(&data->mutex);
24962306a36Sopenharmony_ci
25062306a36Sopenharmony_ci	if (!data->suspended && data->opened)
25162306a36Sopenharmony_ci		cma3000_poweroff(data);
25262306a36Sopenharmony_ci
25362306a36Sopenharmony_ci	data->suspended = true;
25462306a36Sopenharmony_ci
25562306a36Sopenharmony_ci	mutex_unlock(&data->mutex);
25662306a36Sopenharmony_ci}
25762306a36Sopenharmony_ciEXPORT_SYMBOL(cma3000_suspend);
25862306a36Sopenharmony_ci
25962306a36Sopenharmony_ci
26062306a36Sopenharmony_civoid cma3000_resume(struct cma3000_accl_data *data)
26162306a36Sopenharmony_ci{
26262306a36Sopenharmony_ci	mutex_lock(&data->mutex);
26362306a36Sopenharmony_ci
26462306a36Sopenharmony_ci	if (data->suspended && data->opened)
26562306a36Sopenharmony_ci		cma3000_poweron(data);
26662306a36Sopenharmony_ci
26762306a36Sopenharmony_ci	data->suspended = false;
26862306a36Sopenharmony_ci
26962306a36Sopenharmony_ci	mutex_unlock(&data->mutex);
27062306a36Sopenharmony_ci}
27162306a36Sopenharmony_ciEXPORT_SYMBOL(cma3000_resume);
27262306a36Sopenharmony_ci
27362306a36Sopenharmony_cistruct cma3000_accl_data *cma3000_init(struct device *dev, int irq,
27462306a36Sopenharmony_ci				       const struct cma3000_bus_ops *bops)
27562306a36Sopenharmony_ci{
27662306a36Sopenharmony_ci	const struct cma3000_platform_data *pdata = dev_get_platdata(dev);
27762306a36Sopenharmony_ci	struct cma3000_accl_data *data;
27862306a36Sopenharmony_ci	struct input_dev *input_dev;
27962306a36Sopenharmony_ci	int rev;
28062306a36Sopenharmony_ci	int error;
28162306a36Sopenharmony_ci
28262306a36Sopenharmony_ci	if (!pdata) {
28362306a36Sopenharmony_ci		dev_err(dev, "platform data not found\n");
28462306a36Sopenharmony_ci		error = -EINVAL;
28562306a36Sopenharmony_ci		goto err_out;
28662306a36Sopenharmony_ci	}
28762306a36Sopenharmony_ci
28862306a36Sopenharmony_ci
28962306a36Sopenharmony_ci	/* if no IRQ return error */
29062306a36Sopenharmony_ci	if (irq == 0) {
29162306a36Sopenharmony_ci		error = -EINVAL;
29262306a36Sopenharmony_ci		goto err_out;
29362306a36Sopenharmony_ci	}
29462306a36Sopenharmony_ci
29562306a36Sopenharmony_ci	data = kzalloc(sizeof(struct cma3000_accl_data), GFP_KERNEL);
29662306a36Sopenharmony_ci	input_dev = input_allocate_device();
29762306a36Sopenharmony_ci	if (!data || !input_dev) {
29862306a36Sopenharmony_ci		error = -ENOMEM;
29962306a36Sopenharmony_ci		goto err_free_mem;
30062306a36Sopenharmony_ci	}
30162306a36Sopenharmony_ci
30262306a36Sopenharmony_ci	data->dev = dev;
30362306a36Sopenharmony_ci	data->input_dev = input_dev;
30462306a36Sopenharmony_ci	data->bus_ops = bops;
30562306a36Sopenharmony_ci	data->pdata = pdata;
30662306a36Sopenharmony_ci	data->irq = irq;
30762306a36Sopenharmony_ci	mutex_init(&data->mutex);
30862306a36Sopenharmony_ci
30962306a36Sopenharmony_ci	data->mode = pdata->mode;
31062306a36Sopenharmony_ci	if (data->mode > CMAMODE_POFF) {
31162306a36Sopenharmony_ci		data->mode = CMAMODE_MOTDET;
31262306a36Sopenharmony_ci		dev_warn(dev,
31362306a36Sopenharmony_ci			 "Invalid mode specified, assuming Motion Detect\n");
31462306a36Sopenharmony_ci	}
31562306a36Sopenharmony_ci
31662306a36Sopenharmony_ci	data->g_range = pdata->g_range;
31762306a36Sopenharmony_ci	if (data->g_range != CMARANGE_2G && data->g_range != CMARANGE_8G) {
31862306a36Sopenharmony_ci		dev_info(dev,
31962306a36Sopenharmony_ci			 "Invalid G range specified, assuming 8G\n");
32062306a36Sopenharmony_ci		data->g_range = CMARANGE_8G;
32162306a36Sopenharmony_ci	}
32262306a36Sopenharmony_ci
32362306a36Sopenharmony_ci	input_dev->name = "cma3000-accelerometer";
32462306a36Sopenharmony_ci	input_dev->id.bustype = bops->bustype;
32562306a36Sopenharmony_ci	input_dev->open = cma3000_open;
32662306a36Sopenharmony_ci	input_dev->close = cma3000_close;
32762306a36Sopenharmony_ci
32862306a36Sopenharmony_ci	input_set_abs_params(input_dev, ABS_X,
32962306a36Sopenharmony_ci			-data->g_range, data->g_range, pdata->fuzz_x, 0);
33062306a36Sopenharmony_ci	input_set_abs_params(input_dev, ABS_Y,
33162306a36Sopenharmony_ci			-data->g_range, data->g_range, pdata->fuzz_y, 0);
33262306a36Sopenharmony_ci	input_set_abs_params(input_dev, ABS_Z,
33362306a36Sopenharmony_ci			-data->g_range, data->g_range, pdata->fuzz_z, 0);
33462306a36Sopenharmony_ci	input_set_abs_params(input_dev, ABS_MISC, 0, 1, 0, 0);
33562306a36Sopenharmony_ci
33662306a36Sopenharmony_ci	input_set_drvdata(input_dev, data);
33762306a36Sopenharmony_ci
33862306a36Sopenharmony_ci	error = cma3000_reset(data);
33962306a36Sopenharmony_ci	if (error)
34062306a36Sopenharmony_ci		goto err_free_mem;
34162306a36Sopenharmony_ci
34262306a36Sopenharmony_ci	rev = CMA3000_READ(data, CMA3000_REVID, "Revid");
34362306a36Sopenharmony_ci	if (rev < 0) {
34462306a36Sopenharmony_ci		error = rev;
34562306a36Sopenharmony_ci		goto err_free_mem;
34662306a36Sopenharmony_ci	}
34762306a36Sopenharmony_ci
34862306a36Sopenharmony_ci	pr_info("CMA3000 Accelerometer: Revision %x\n", rev);
34962306a36Sopenharmony_ci
35062306a36Sopenharmony_ci	error = request_threaded_irq(irq, NULL, cma3000_thread_irq,
35162306a36Sopenharmony_ci				     pdata->irqflags | IRQF_ONESHOT,
35262306a36Sopenharmony_ci				     "cma3000_d0x", data);
35362306a36Sopenharmony_ci	if (error) {
35462306a36Sopenharmony_ci		dev_err(dev, "request_threaded_irq failed\n");
35562306a36Sopenharmony_ci		goto err_free_mem;
35662306a36Sopenharmony_ci	}
35762306a36Sopenharmony_ci
35862306a36Sopenharmony_ci	error = input_register_device(data->input_dev);
35962306a36Sopenharmony_ci	if (error) {
36062306a36Sopenharmony_ci		dev_err(dev, "Unable to register input device\n");
36162306a36Sopenharmony_ci		goto err_free_irq;
36262306a36Sopenharmony_ci	}
36362306a36Sopenharmony_ci
36462306a36Sopenharmony_ci	return data;
36562306a36Sopenharmony_ci
36662306a36Sopenharmony_cierr_free_irq:
36762306a36Sopenharmony_ci	free_irq(irq, data);
36862306a36Sopenharmony_cierr_free_mem:
36962306a36Sopenharmony_ci	input_free_device(input_dev);
37062306a36Sopenharmony_ci	kfree(data);
37162306a36Sopenharmony_cierr_out:
37262306a36Sopenharmony_ci	return ERR_PTR(error);
37362306a36Sopenharmony_ci}
37462306a36Sopenharmony_ciEXPORT_SYMBOL(cma3000_init);
37562306a36Sopenharmony_ci
37662306a36Sopenharmony_civoid cma3000_exit(struct cma3000_accl_data *data)
37762306a36Sopenharmony_ci{
37862306a36Sopenharmony_ci	free_irq(data->irq, data);
37962306a36Sopenharmony_ci	input_unregister_device(data->input_dev);
38062306a36Sopenharmony_ci	kfree(data);
38162306a36Sopenharmony_ci}
38262306a36Sopenharmony_ciEXPORT_SYMBOL(cma3000_exit);
38362306a36Sopenharmony_ci
38462306a36Sopenharmony_ciMODULE_DESCRIPTION("CMA3000-D0x Accelerometer Driver");
38562306a36Sopenharmony_ciMODULE_LICENSE("GPL");
38662306a36Sopenharmony_ciMODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
387