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v3.15
 
  1/*
  2 * Copyright (c) 2010, 2011 Fabien Marteau <fabien.marteau@armadeus.com>
  3 * Sponsored by ARMadeus Systems
  4 *
  5 * This program is free software; you can redistribute it and/or modify
  6 * it under the terms of the GNU General Public License as published by
  7 * the Free Software Foundation; either version 2 of the License, or
  8 * (at your option) any later version.
  9 *
 10 * This program is distributed in the hope that it will be useful,
 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 * GNU General Public License for more details.
 14 *
 15 * You should have received a copy of the GNU General Public License
 16 * along with this program; if not, write to the Free Software
 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 18 *
 19 * Driver for Austria Microsystems joysticks AS5011
 20 *
 21 * TODO:
 22 *	- Power on the chip when open() and power down when close()
 23 *	- Manage power mode
 24 */
 25
 26#include <linux/i2c.h>
 27#include <linux/interrupt.h>
 28#include <linux/input.h>
 29#include <linux/gpio.h>
 30#include <linux/delay.h>
 31#include <linux/input/as5011.h>
 32#include <linux/slab.h>
 33#include <linux/module.h>
 34
 35#define DRIVER_DESC "Driver for Austria Microsystems AS5011 joystick"
 36#define MODULE_DEVICE_ALIAS "as5011"
 37
 38MODULE_AUTHOR("Fabien Marteau <fabien.marteau@armadeus.com>");
 39MODULE_DESCRIPTION(DRIVER_DESC);
 40MODULE_LICENSE("GPL");
 41
 42/* registers */
 43#define AS5011_CTRL1		0x76
 44#define AS5011_CTRL2		0x75
 45#define AS5011_XP		0x43
 46#define AS5011_XN		0x44
 47#define AS5011_YP		0x53
 48#define AS5011_YN		0x54
 49#define AS5011_X_REG		0x41
 50#define AS5011_Y_REG		0x42
 51#define AS5011_X_RES_INT	0x51
 52#define AS5011_Y_RES_INT	0x52
 53
 54/* CTRL1 bits */
 55#define AS5011_CTRL1_LP_PULSED		0x80
 56#define AS5011_CTRL1_LP_ACTIVE		0x40
 57#define AS5011_CTRL1_LP_CONTINUE	0x20
 58#define AS5011_CTRL1_INT_WUP_EN		0x10
 59#define AS5011_CTRL1_INT_ACT_EN		0x08
 60#define AS5011_CTRL1_EXT_CLK_EN		0x04
 61#define AS5011_CTRL1_SOFT_RST		0x02
 62#define AS5011_CTRL1_DATA_VALID		0x01
 63
 64/* CTRL2 bits */
 65#define AS5011_CTRL2_EXT_SAMPLE_EN	0x08
 66#define AS5011_CTRL2_RC_BIAS_ON		0x04
 67#define AS5011_CTRL2_INV_SPINNING	0x02
 68
 69#define AS5011_MAX_AXIS	80
 70#define AS5011_MIN_AXIS	(-80)
 71#define AS5011_FUZZ	8
 72#define AS5011_FLAT	40
 73
 74struct as5011_device {
 75	struct input_dev *input_dev;
 76	struct i2c_client *i2c_client;
 77	unsigned int button_gpio;
 78	unsigned int button_irq;
 79	unsigned int axis_irq;
 80};
 81
 82static int as5011_i2c_write(struct i2c_client *client,
 83			    uint8_t aregaddr,
 84			    uint8_t avalue)
 85{
 86	uint8_t data[2] = { aregaddr, avalue };
 87	struct i2c_msg msg = {
 88		.addr = client->addr,
 89		.flags = I2C_M_IGNORE_NAK,
 90		.len = 2,
 91		.buf = (uint8_t *)data
 92	};
 93	int error;
 94
 95	error = i2c_transfer(client->adapter, &msg, 1);
 96	return error < 0 ? error : 0;
 97}
 98
 99static int as5011_i2c_read(struct i2c_client *client,
100			   uint8_t aregaddr, signed char *value)
101{
102	uint8_t data[2] = { aregaddr };
103	struct i2c_msg msg_set[2] = {
104		{
105			.addr = client->addr,
106			.flags = I2C_M_REV_DIR_ADDR,
107			.len = 1,
108			.buf = (uint8_t *)data
109		},
110		{
111			.addr = client->addr,
112			.flags = I2C_M_RD | I2C_M_NOSTART,
113			.len = 1,
114			.buf = (uint8_t *)data
115		}
116	};
117	int error;
118
119	error = i2c_transfer(client->adapter, msg_set, 2);
120	if (error < 0)
121		return error;
122
123	*value = data[0] & 0x80 ? -1 * (1 + ~data[0]) : data[0];
124	return 0;
125}
126
127static irqreturn_t as5011_button_interrupt(int irq, void *dev_id)
128{
129	struct as5011_device *as5011 = dev_id;
130	int val = gpio_get_value_cansleep(as5011->button_gpio);
131
132	input_report_key(as5011->input_dev, BTN_JOYSTICK, !val);
133	input_sync(as5011->input_dev);
134
135	return IRQ_HANDLED;
136}
137
138static irqreturn_t as5011_axis_interrupt(int irq, void *dev_id)
139{
140	struct as5011_device *as5011 = dev_id;
141	int error;
142	signed char x, y;
143
144	error = as5011_i2c_read(as5011->i2c_client, AS5011_X_RES_INT, &x);
145	if (error < 0)
146		goto out;
147
148	error = as5011_i2c_read(as5011->i2c_client, AS5011_Y_RES_INT, &y);
149	if (error < 0)
150		goto out;
151
152	input_report_abs(as5011->input_dev, ABS_X, x);
153	input_report_abs(as5011->input_dev, ABS_Y, y);
154	input_sync(as5011->input_dev);
155
156out:
157	return IRQ_HANDLED;
158}
159
160static int as5011_configure_chip(struct as5011_device *as5011,
161				const struct as5011_platform_data *plat_dat)
162{
163	struct i2c_client *client = as5011->i2c_client;
164	int error;
165	signed char value;
166
167	/* chip soft reset */
168	error = as5011_i2c_write(client, AS5011_CTRL1,
169				 AS5011_CTRL1_SOFT_RST);
170	if (error < 0) {
171		dev_err(&client->dev, "Soft reset failed\n");
172		return error;
173	}
174
175	mdelay(10);
176
177	error = as5011_i2c_write(client, AS5011_CTRL1,
178				 AS5011_CTRL1_LP_PULSED |
179				 AS5011_CTRL1_LP_ACTIVE |
180				 AS5011_CTRL1_INT_ACT_EN);
181	if (error < 0) {
182		dev_err(&client->dev, "Power config failed\n");
183		return error;
184	}
185
186	error = as5011_i2c_write(client, AS5011_CTRL2,
187				 AS5011_CTRL2_INV_SPINNING);
188	if (error < 0) {
189		dev_err(&client->dev, "Can't invert spinning\n");
190		return error;
191	}
192
193	/* write threshold */
194	error = as5011_i2c_write(client, AS5011_XP, plat_dat->xp);
195	if (error < 0) {
196		dev_err(&client->dev, "Can't write threshold\n");
197		return error;
198	}
199
200	error = as5011_i2c_write(client, AS5011_XN, plat_dat->xn);
201	if (error < 0) {
202		dev_err(&client->dev, "Can't write threshold\n");
203		return error;
204	}
205
206	error = as5011_i2c_write(client, AS5011_YP, plat_dat->yp);
207	if (error < 0) {
208		dev_err(&client->dev, "Can't write threshold\n");
209		return error;
210	}
211
212	error = as5011_i2c_write(client, AS5011_YN, plat_dat->yn);
213	if (error < 0) {
214		dev_err(&client->dev, "Can't write threshold\n");
215		return error;
216	}
217
218	/* to free irq gpio in chip */
219	error = as5011_i2c_read(client, AS5011_X_RES_INT, &value);
220	if (error < 0) {
221		dev_err(&client->dev, "Can't read i2c X resolution value\n");
222		return error;
223	}
224
225	return 0;
226}
227
228static int as5011_probe(struct i2c_client *client,
229			 const struct i2c_device_id *id)
230{
231	const struct as5011_platform_data *plat_data;
232	struct as5011_device *as5011;
233	struct input_dev *input_dev;
234	int irq;
235	int error;
236
237	plat_data = dev_get_platdata(&client->dev);
238	if (!plat_data)
239		return -EINVAL;
240
241	if (!plat_data->axis_irq) {
242		dev_err(&client->dev, "No axis IRQ?\n");
243		return -EINVAL;
244	}
245
246	if (!i2c_check_functionality(client->adapter,
247				     I2C_FUNC_NOSTART |
248				     I2C_FUNC_PROTOCOL_MANGLING)) {
249		dev_err(&client->dev,
250			"need i2c bus that supports protocol mangling\n");
251		return -ENODEV;
252	}
253
254	as5011 = kmalloc(sizeof(struct as5011_device), GFP_KERNEL);
255	input_dev = input_allocate_device();
256	if (!as5011 || !input_dev) {
257		dev_err(&client->dev,
258			"Can't allocate memory for device structure\n");
259		error = -ENOMEM;
260		goto err_free_mem;
261	}
262
263	as5011->i2c_client = client;
264	as5011->input_dev = input_dev;
265	as5011->button_gpio = plat_data->button_gpio;
266	as5011->axis_irq = plat_data->axis_irq;
267
268	input_dev->name = "Austria Microsystem as5011 joystick";
269	input_dev->id.bustype = BUS_I2C;
270	input_dev->dev.parent = &client->dev;
271
272	__set_bit(EV_KEY, input_dev->evbit);
273	__set_bit(EV_ABS, input_dev->evbit);
274	__set_bit(BTN_JOYSTICK, input_dev->keybit);
275
276	input_set_abs_params(input_dev, ABS_X,
277		AS5011_MIN_AXIS, AS5011_MAX_AXIS, AS5011_FUZZ, AS5011_FLAT);
278	input_set_abs_params(as5011->input_dev, ABS_Y,
279		AS5011_MIN_AXIS, AS5011_MAX_AXIS, AS5011_FUZZ, AS5011_FLAT);
280
281	error = gpio_request(as5011->button_gpio, "AS5011 button");
282	if (error < 0) {
283		dev_err(&client->dev, "Failed to request button gpio\n");
 
284		goto err_free_mem;
285	}
 
286
287	irq = gpio_to_irq(as5011->button_gpio);
288	if (irq < 0) {
289		dev_err(&client->dev,
290			"Failed to get irq number for button gpio\n");
291		error = irq;
292		goto err_free_button_gpio;
293	}
294
295	as5011->button_irq = irq;
296
297	error = request_threaded_irq(as5011->button_irq,
298				     NULL, as5011_button_interrupt,
299				     IRQF_TRIGGER_RISING |
300					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
301				     "as5011_button", as5011);
302	if (error < 0) {
303		dev_err(&client->dev,
304			"Can't allocate button irq %d\n", as5011->button_irq);
305		goto err_free_button_gpio;
306	}
307
308	error = as5011_configure_chip(as5011, plat_data);
309	if (error)
310		goto err_free_button_irq;
311
312	error = request_threaded_irq(as5011->axis_irq, NULL,
313				     as5011_axis_interrupt,
314				     plat_data->axis_irqflags | IRQF_ONESHOT,
315				     "as5011_joystick", as5011);
316	if (error) {
317		dev_err(&client->dev,
318			"Can't allocate axis irq %d\n", plat_data->axis_irq);
319		goto err_free_button_irq;
320	}
321
322	error = input_register_device(as5011->input_dev);
323	if (error) {
324		dev_err(&client->dev, "Failed to register input device\n");
325		goto err_free_axis_irq;
326	}
327
328	i2c_set_clientdata(client, as5011);
329
330	return 0;
331
332err_free_axis_irq:
333	free_irq(as5011->axis_irq, as5011);
334err_free_button_irq:
335	free_irq(as5011->button_irq, as5011);
336err_free_button_gpio:
337	gpio_free(as5011->button_gpio);
338err_free_mem:
339	input_free_device(input_dev);
340	kfree(as5011);
341
342	return error;
343}
344
345static int as5011_remove(struct i2c_client *client)
346{
347	struct as5011_device *as5011 = i2c_get_clientdata(client);
348
349	free_irq(as5011->axis_irq, as5011);
350	free_irq(as5011->button_irq, as5011);
351	gpio_free(as5011->button_gpio);
352
353	input_unregister_device(as5011->input_dev);
354	kfree(as5011);
355
356	return 0;
357}
358
359static const struct i2c_device_id as5011_id[] = {
360	{ MODULE_DEVICE_ALIAS, 0 },
361	{ }
362};
363MODULE_DEVICE_TABLE(i2c, as5011_id);
364
365static struct i2c_driver as5011_driver = {
366	.driver = {
367		.name = "as5011",
368	},
369	.probe		= as5011_probe,
370	.remove		= as5011_remove,
371	.id_table	= as5011_id,
372};
373
374module_i2c_driver(as5011_driver);
v6.9.4
  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * Copyright (c) 2010, 2011 Fabien Marteau <fabien.marteau@armadeus.com>
  4 * Sponsored by ARMadeus Systems
  5 *
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  6 * Driver for Austria Microsystems joysticks AS5011
  7 *
  8 * TODO:
  9 *	- Power on the chip when open() and power down when close()
 10 *	- Manage power mode
 11 */
 12
 13#include <linux/i2c.h>
 14#include <linux/interrupt.h>
 15#include <linux/input.h>
 16#include <linux/gpio/consumer.h>
 17#include <linux/delay.h>
 18#include <linux/input/as5011.h>
 19#include <linux/slab.h>
 20#include <linux/module.h>
 21
 22#define DRIVER_DESC "Driver for Austria Microsystems AS5011 joystick"
 23#define MODULE_DEVICE_ALIAS "as5011"
 24
 25MODULE_AUTHOR("Fabien Marteau <fabien.marteau@armadeus.com>");
 26MODULE_DESCRIPTION(DRIVER_DESC);
 27MODULE_LICENSE("GPL");
 28
 29/* registers */
 30#define AS5011_CTRL1		0x76
 31#define AS5011_CTRL2		0x75
 32#define AS5011_XP		0x43
 33#define AS5011_XN		0x44
 34#define AS5011_YP		0x53
 35#define AS5011_YN		0x54
 36#define AS5011_X_REG		0x41
 37#define AS5011_Y_REG		0x42
 38#define AS5011_X_RES_INT	0x51
 39#define AS5011_Y_RES_INT	0x52
 40
 41/* CTRL1 bits */
 42#define AS5011_CTRL1_LP_PULSED		0x80
 43#define AS5011_CTRL1_LP_ACTIVE		0x40
 44#define AS5011_CTRL1_LP_CONTINUE	0x20
 45#define AS5011_CTRL1_INT_WUP_EN		0x10
 46#define AS5011_CTRL1_INT_ACT_EN		0x08
 47#define AS5011_CTRL1_EXT_CLK_EN		0x04
 48#define AS5011_CTRL1_SOFT_RST		0x02
 49#define AS5011_CTRL1_DATA_VALID		0x01
 50
 51/* CTRL2 bits */
 52#define AS5011_CTRL2_EXT_SAMPLE_EN	0x08
 53#define AS5011_CTRL2_RC_BIAS_ON		0x04
 54#define AS5011_CTRL2_INV_SPINNING	0x02
 55
 56#define AS5011_MAX_AXIS	80
 57#define AS5011_MIN_AXIS	(-80)
 58#define AS5011_FUZZ	8
 59#define AS5011_FLAT	40
 60
 61struct as5011_device {
 62	struct input_dev *input_dev;
 63	struct i2c_client *i2c_client;
 64	struct gpio_desc *button_gpiod;
 65	unsigned int button_irq;
 66	unsigned int axis_irq;
 67};
 68
 69static int as5011_i2c_write(struct i2c_client *client,
 70			    uint8_t aregaddr,
 71			    uint8_t avalue)
 72{
 73	uint8_t data[2] = { aregaddr, avalue };
 74	struct i2c_msg msg = {
 75		.addr = client->addr,
 76		.flags = I2C_M_IGNORE_NAK,
 77		.len = 2,
 78		.buf = (uint8_t *)data
 79	};
 80	int error;
 81
 82	error = i2c_transfer(client->adapter, &msg, 1);
 83	return error < 0 ? error : 0;
 84}
 85
 86static int as5011_i2c_read(struct i2c_client *client,
 87			   uint8_t aregaddr, signed char *value)
 88{
 89	uint8_t data[2] = { aregaddr };
 90	struct i2c_msg msg_set[2] = {
 91		{
 92			.addr = client->addr,
 93			.flags = I2C_M_REV_DIR_ADDR,
 94			.len = 1,
 95			.buf = (uint8_t *)data
 96		},
 97		{
 98			.addr = client->addr,
 99			.flags = I2C_M_RD | I2C_M_NOSTART,
100			.len = 1,
101			.buf = (uint8_t *)data
102		}
103	};
104	int error;
105
106	error = i2c_transfer(client->adapter, msg_set, 2);
107	if (error < 0)
108		return error;
109
110	*value = data[0] & 0x80 ? -1 * (1 + ~data[0]) : data[0];
111	return 0;
112}
113
114static irqreturn_t as5011_button_interrupt(int irq, void *dev_id)
115{
116	struct as5011_device *as5011 = dev_id;
117	int val = gpiod_get_value_cansleep(as5011->button_gpiod);
118
119	input_report_key(as5011->input_dev, BTN_JOYSTICK, !val);
120	input_sync(as5011->input_dev);
121
122	return IRQ_HANDLED;
123}
124
125static irqreturn_t as5011_axis_interrupt(int irq, void *dev_id)
126{
127	struct as5011_device *as5011 = dev_id;
128	int error;
129	signed char x, y;
130
131	error = as5011_i2c_read(as5011->i2c_client, AS5011_X_RES_INT, &x);
132	if (error < 0)
133		goto out;
134
135	error = as5011_i2c_read(as5011->i2c_client, AS5011_Y_RES_INT, &y);
136	if (error < 0)
137		goto out;
138
139	input_report_abs(as5011->input_dev, ABS_X, x);
140	input_report_abs(as5011->input_dev, ABS_Y, y);
141	input_sync(as5011->input_dev);
142
143out:
144	return IRQ_HANDLED;
145}
146
147static int as5011_configure_chip(struct as5011_device *as5011,
148				const struct as5011_platform_data *plat_dat)
149{
150	struct i2c_client *client = as5011->i2c_client;
151	int error;
152	signed char value;
153
154	/* chip soft reset */
155	error = as5011_i2c_write(client, AS5011_CTRL1,
156				 AS5011_CTRL1_SOFT_RST);
157	if (error < 0) {
158		dev_err(&client->dev, "Soft reset failed\n");
159		return error;
160	}
161
162	mdelay(10);
163
164	error = as5011_i2c_write(client, AS5011_CTRL1,
165				 AS5011_CTRL1_LP_PULSED |
166				 AS5011_CTRL1_LP_ACTIVE |
167				 AS5011_CTRL1_INT_ACT_EN);
168	if (error < 0) {
169		dev_err(&client->dev, "Power config failed\n");
170		return error;
171	}
172
173	error = as5011_i2c_write(client, AS5011_CTRL2,
174				 AS5011_CTRL2_INV_SPINNING);
175	if (error < 0) {
176		dev_err(&client->dev, "Can't invert spinning\n");
177		return error;
178	}
179
180	/* write threshold */
181	error = as5011_i2c_write(client, AS5011_XP, plat_dat->xp);
182	if (error < 0) {
183		dev_err(&client->dev, "Can't write threshold\n");
184		return error;
185	}
186
187	error = as5011_i2c_write(client, AS5011_XN, plat_dat->xn);
188	if (error < 0) {
189		dev_err(&client->dev, "Can't write threshold\n");
190		return error;
191	}
192
193	error = as5011_i2c_write(client, AS5011_YP, plat_dat->yp);
194	if (error < 0) {
195		dev_err(&client->dev, "Can't write threshold\n");
196		return error;
197	}
198
199	error = as5011_i2c_write(client, AS5011_YN, plat_dat->yn);
200	if (error < 0) {
201		dev_err(&client->dev, "Can't write threshold\n");
202		return error;
203	}
204
205	/* to free irq gpio in chip */
206	error = as5011_i2c_read(client, AS5011_X_RES_INT, &value);
207	if (error < 0) {
208		dev_err(&client->dev, "Can't read i2c X resolution value\n");
209		return error;
210	}
211
212	return 0;
213}
214
215static int as5011_probe(struct i2c_client *client)
 
216{
217	const struct as5011_platform_data *plat_data;
218	struct as5011_device *as5011;
219	struct input_dev *input_dev;
220	int irq;
221	int error;
222
223	plat_data = dev_get_platdata(&client->dev);
224	if (!plat_data)
225		return -EINVAL;
226
227	if (!plat_data->axis_irq) {
228		dev_err(&client->dev, "No axis IRQ?\n");
229		return -EINVAL;
230	}
231
232	if (!i2c_check_functionality(client->adapter,
233				     I2C_FUNC_NOSTART |
234				     I2C_FUNC_PROTOCOL_MANGLING)) {
235		dev_err(&client->dev,
236			"need i2c bus that supports protocol mangling\n");
237		return -ENODEV;
238	}
239
240	as5011 = kmalloc(sizeof(struct as5011_device), GFP_KERNEL);
241	input_dev = input_allocate_device();
242	if (!as5011 || !input_dev) {
243		dev_err(&client->dev,
244			"Can't allocate memory for device structure\n");
245		error = -ENOMEM;
246		goto err_free_mem;
247	}
248
249	as5011->i2c_client = client;
250	as5011->input_dev = input_dev;
 
251	as5011->axis_irq = plat_data->axis_irq;
252
253	input_dev->name = "Austria Microsystem as5011 joystick";
254	input_dev->id.bustype = BUS_I2C;
255	input_dev->dev.parent = &client->dev;
256
257	input_set_capability(input_dev, EV_KEY, BTN_JOYSTICK);
 
 
258
259	input_set_abs_params(input_dev, ABS_X,
260		AS5011_MIN_AXIS, AS5011_MAX_AXIS, AS5011_FUZZ, AS5011_FLAT);
261	input_set_abs_params(as5011->input_dev, ABS_Y,
262		AS5011_MIN_AXIS, AS5011_MAX_AXIS, AS5011_FUZZ, AS5011_FLAT);
263
264	as5011->button_gpiod = devm_gpiod_get(&client->dev, NULL, GPIOD_IN);
265	if (IS_ERR(as5011->button_gpiod)) {
266		error = PTR_ERR(as5011->button_gpiod);
267		dev_err(&client->dev, "Failed to request button GPIO\n");
268		goto err_free_mem;
269	}
270	gpiod_set_consumer_name(as5011->button_gpiod, "AS5011 button");
271
272	irq = gpiod_to_irq(as5011->button_gpiod);
273	if (irq < 0) {
274		dev_err(&client->dev,
275			"Failed to get irq number for button gpio\n");
276		error = irq;
277		goto err_free_mem;
278	}
279
280	as5011->button_irq = irq;
281
282	error = request_threaded_irq(as5011->button_irq,
283				     NULL, as5011_button_interrupt,
284				     IRQF_TRIGGER_RISING |
285					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
286				     "as5011_button", as5011);
287	if (error < 0) {
288		dev_err(&client->dev,
289			"Can't allocate button irq %d\n", as5011->button_irq);
290		goto err_free_mem;
291	}
292
293	error = as5011_configure_chip(as5011, plat_data);
294	if (error)
295		goto err_free_button_irq;
296
297	error = request_threaded_irq(as5011->axis_irq, NULL,
298				     as5011_axis_interrupt,
299				     plat_data->axis_irqflags | IRQF_ONESHOT,
300				     "as5011_joystick", as5011);
301	if (error) {
302		dev_err(&client->dev,
303			"Can't allocate axis irq %d\n", plat_data->axis_irq);
304		goto err_free_button_irq;
305	}
306
307	error = input_register_device(as5011->input_dev);
308	if (error) {
309		dev_err(&client->dev, "Failed to register input device\n");
310		goto err_free_axis_irq;
311	}
312
313	i2c_set_clientdata(client, as5011);
314
315	return 0;
316
317err_free_axis_irq:
318	free_irq(as5011->axis_irq, as5011);
319err_free_button_irq:
320	free_irq(as5011->button_irq, as5011);
 
 
321err_free_mem:
322	input_free_device(input_dev);
323	kfree(as5011);
324
325	return error;
326}
327
328static void as5011_remove(struct i2c_client *client)
329{
330	struct as5011_device *as5011 = i2c_get_clientdata(client);
331
332	free_irq(as5011->axis_irq, as5011);
333	free_irq(as5011->button_irq, as5011);
 
334
335	input_unregister_device(as5011->input_dev);
336	kfree(as5011);
 
 
337}
338
339static const struct i2c_device_id as5011_id[] = {
340	{ MODULE_DEVICE_ALIAS, 0 },
341	{ }
342};
343MODULE_DEVICE_TABLE(i2c, as5011_id);
344
345static struct i2c_driver as5011_driver = {
346	.driver = {
347		.name = "as5011",
348	},
349	.probe		= as5011_probe,
350	.remove		= as5011_remove,
351	.id_table	= as5011_id,
352};
353
354module_i2c_driver(as5011_driver);