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1/*
2 * twl6040-vibra.c - TWL6040 Vibrator driver
3 *
4 * Author: Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
5 * Author: Misael Lopez Cruz <misael.lopez@ti.com>
6 *
7 * Copyright: (C) 2011 Texas Instruments, Inc.
8 *
9 * Based on twl4030-vibra.c by Henrik Saari <henrik.saari@nokia.com>
10 * Felipe Balbi <felipe.balbi@nokia.com>
11 * Jari Vanhala <ext-javi.vanhala@nokia.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 * 02110-1301 USA
26 *
27 */
28#include <linux/module.h>
29#include <linux/platform_device.h>
30#include <linux/workqueue.h>
31#include <linux/i2c/twl.h>
32#include <linux/mfd/twl6040.h>
33#include <linux/slab.h>
34#include <linux/delay.h>
35#include <linux/regulator/consumer.h>
36
37#define EFFECT_DIR_180_DEG 0x8000
38
39/* Recommended modulation index 85% */
40#define TWL6040_VIBRA_MOD 85
41
42#define TWL6040_NUM_SUPPLIES 2
43
44struct vibra_info {
45 struct device *dev;
46 struct input_dev *input_dev;
47 struct workqueue_struct *workqueue;
48 struct work_struct play_work;
49 struct mutex mutex;
50 int irq;
51
52 bool enabled;
53 int weak_speed;
54 int strong_speed;
55 int direction;
56
57 unsigned int vibldrv_res;
58 unsigned int vibrdrv_res;
59 unsigned int viblmotor_res;
60 unsigned int vibrmotor_res;
61
62 struct regulator_bulk_data supplies[TWL6040_NUM_SUPPLIES];
63
64 struct twl6040 *twl6040;
65};
66
67static irqreturn_t twl6040_vib_irq_handler(int irq, void *data)
68{
69 struct vibra_info *info = data;
70 struct twl6040 *twl6040 = info->twl6040;
71 u8 status;
72
73 status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
74 if (status & TWL6040_VIBLOCDET) {
75 dev_warn(info->dev, "Left Vibrator overcurrent detected\n");
76 twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLL,
77 TWL6040_VIBENAL);
78 }
79 if (status & TWL6040_VIBROCDET) {
80 dev_warn(info->dev, "Right Vibrator overcurrent detected\n");
81 twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLR,
82 TWL6040_VIBENAR);
83 }
84
85 return IRQ_HANDLED;
86}
87
88static void twl6040_vibra_enable(struct vibra_info *info)
89{
90 struct twl6040 *twl6040 = info->twl6040;
91 int ret;
92
93 ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
94 if (ret) {
95 dev_err(info->dev, "failed to enable regulators %d\n", ret);
96 return;
97 }
98
99 twl6040_power(info->twl6040, 1);
100 if (twl6040->rev <= TWL6040_REV_ES1_1) {
101 /*
102 * ERRATA: Disable overcurrent protection for at least
103 * 3ms when enabling vibrator drivers to avoid false
104 * overcurrent detection
105 */
106 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
107 TWL6040_VIBENAL | TWL6040_VIBCTRLL);
108 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
109 TWL6040_VIBENAR | TWL6040_VIBCTRLR);
110 usleep_range(3000, 3500);
111 }
112
113 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
114 TWL6040_VIBENAL);
115 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
116 TWL6040_VIBENAR);
117
118 info->enabled = true;
119}
120
121static void twl6040_vibra_disable(struct vibra_info *info)
122{
123 struct twl6040 *twl6040 = info->twl6040;
124
125 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL, 0x00);
126 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR, 0x00);
127 twl6040_power(info->twl6040, 0);
128
129 regulator_bulk_disable(ARRAY_SIZE(info->supplies), info->supplies);
130
131 info->enabled = false;
132}
133
134static u8 twl6040_vibra_code(int vddvib, int vibdrv_res, int motor_res,
135 int speed, int direction)
136{
137 int vpk, max_code;
138 u8 vibdat;
139
140 /* output swing */
141 vpk = (vddvib * motor_res * TWL6040_VIBRA_MOD) /
142 (100 * (vibdrv_res + motor_res));
143
144 /* 50mV per VIBDAT code step */
145 max_code = vpk / 50;
146 if (max_code > TWL6040_VIBDAT_MAX)
147 max_code = TWL6040_VIBDAT_MAX;
148
149 /* scale speed to max allowed code */
150 vibdat = (u8)((speed * max_code) / USHRT_MAX);
151
152 /* 2's complement for direction > 180 degrees */
153 vibdat *= direction;
154
155 return vibdat;
156}
157
158static void twl6040_vibra_set_effect(struct vibra_info *info)
159{
160 struct twl6040 *twl6040 = info->twl6040;
161 u8 vibdatl, vibdatr;
162 int volt;
163
164 /* weak motor */
165 volt = regulator_get_voltage(info->supplies[0].consumer) / 1000;
166 vibdatl = twl6040_vibra_code(volt, info->vibldrv_res,
167 info->viblmotor_res,
168 info->weak_speed, info->direction);
169
170 /* strong motor */
171 volt = regulator_get_voltage(info->supplies[1].consumer) / 1000;
172 vibdatr = twl6040_vibra_code(volt, info->vibrdrv_res,
173 info->vibrmotor_res,
174 info->strong_speed, info->direction);
175
176 twl6040_reg_write(twl6040, TWL6040_REG_VIBDATL, vibdatl);
177 twl6040_reg_write(twl6040, TWL6040_REG_VIBDATR, vibdatr);
178}
179
180static void vibra_play_work(struct work_struct *work)
181{
182 struct vibra_info *info = container_of(work,
183 struct vibra_info, play_work);
184
185 mutex_lock(&info->mutex);
186
187 if (info->weak_speed || info->strong_speed) {
188 if (!info->enabled)
189 twl6040_vibra_enable(info);
190
191 twl6040_vibra_set_effect(info);
192 } else if (info->enabled)
193 twl6040_vibra_disable(info);
194
195 mutex_unlock(&info->mutex);
196}
197
198static int vibra_play(struct input_dev *input, void *data,
199 struct ff_effect *effect)
200{
201 struct vibra_info *info = input_get_drvdata(input);
202 int ret;
203
204 info->weak_speed = effect->u.rumble.weak_magnitude;
205 info->strong_speed = effect->u.rumble.strong_magnitude;
206 info->direction = effect->direction < EFFECT_DIR_180_DEG ? 1 : -1;
207
208 ret = queue_work(info->workqueue, &info->play_work);
209 if (!ret) {
210 dev_info(&input->dev, "work is already on queue\n");
211 return ret;
212 }
213
214 return 0;
215}
216
217static void twl6040_vibra_close(struct input_dev *input)
218{
219 struct vibra_info *info = input_get_drvdata(input);
220
221 cancel_work_sync(&info->play_work);
222
223 mutex_lock(&info->mutex);
224
225 if (info->enabled)
226 twl6040_vibra_disable(info);
227
228 mutex_unlock(&info->mutex);
229}
230
231#if CONFIG_PM_SLEEP
232static int twl6040_vibra_suspend(struct device *dev)
233{
234 struct platform_device *pdev = to_platform_device(dev);
235 struct vibra_info *info = platform_get_drvdata(pdev);
236
237 mutex_lock(&info->mutex);
238
239 if (info->enabled)
240 twl6040_vibra_disable(info);
241
242 mutex_unlock(&info->mutex);
243
244 return 0;
245}
246
247#endif
248
249static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);
250
251static int __devinit twl6040_vibra_probe(struct platform_device *pdev)
252{
253 struct twl4030_vibra_data *pdata = pdev->dev.platform_data;
254 struct vibra_info *info;
255 int ret;
256
257 if (!pdata) {
258 dev_err(&pdev->dev, "platform_data not available\n");
259 return -EINVAL;
260 }
261
262 info = kzalloc(sizeof(*info), GFP_KERNEL);
263 if (!info) {
264 dev_err(&pdev->dev, "couldn't allocate memory\n");
265 return -ENOMEM;
266 }
267
268 info->dev = &pdev->dev;
269 info->twl6040 = dev_get_drvdata(pdev->dev.parent);
270 info->vibldrv_res = pdata->vibldrv_res;
271 info->vibrdrv_res = pdata->vibrdrv_res;
272 info->viblmotor_res = pdata->viblmotor_res;
273 info->vibrmotor_res = pdata->vibrmotor_res;
274 if ((!info->vibldrv_res && !info->viblmotor_res) ||
275 (!info->vibrdrv_res && !info->vibrmotor_res)) {
276 dev_err(info->dev, "invalid vibra driver/motor resistance\n");
277 ret = -EINVAL;
278 goto err_kzalloc;
279 }
280
281 info->irq = platform_get_irq(pdev, 0);
282 if (info->irq < 0) {
283 dev_err(info->dev, "invalid irq\n");
284 ret = -EINVAL;
285 goto err_kzalloc;
286 }
287
288 mutex_init(&info->mutex);
289
290 info->input_dev = input_allocate_device();
291 if (info->input_dev == NULL) {
292 dev_err(info->dev, "couldn't allocate input device\n");
293 ret = -ENOMEM;
294 goto err_kzalloc;
295 }
296
297 input_set_drvdata(info->input_dev, info);
298
299 info->input_dev->name = "twl6040:vibrator";
300 info->input_dev->id.version = 1;
301 info->input_dev->dev.parent = pdev->dev.parent;
302 info->input_dev->close = twl6040_vibra_close;
303 __set_bit(FF_RUMBLE, info->input_dev->ffbit);
304
305 ret = input_ff_create_memless(info->input_dev, NULL, vibra_play);
306 if (ret < 0) {
307 dev_err(info->dev, "couldn't register vibrator to FF\n");
308 goto err_ialloc;
309 }
310
311 ret = input_register_device(info->input_dev);
312 if (ret < 0) {
313 dev_err(info->dev, "couldn't register input device\n");
314 goto err_iff;
315 }
316
317 platform_set_drvdata(pdev, info);
318
319 ret = request_threaded_irq(info->irq, NULL, twl6040_vib_irq_handler, 0,
320 "twl6040_irq_vib", info);
321 if (ret) {
322 dev_err(info->dev, "VIB IRQ request failed: %d\n", ret);
323 goto err_irq;
324 }
325
326 info->supplies[0].supply = "vddvibl";
327 info->supplies[1].supply = "vddvibr";
328 ret = regulator_bulk_get(info->dev, ARRAY_SIZE(info->supplies),
329 info->supplies);
330 if (ret) {
331 dev_err(info->dev, "couldn't get regulators %d\n", ret);
332 goto err_regulator;
333 }
334
335 if (pdata->vddvibl_uV) {
336 ret = regulator_set_voltage(info->supplies[0].consumer,
337 pdata->vddvibl_uV,
338 pdata->vddvibl_uV);
339 if (ret) {
340 dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
341 ret);
342 goto err_voltage;
343 }
344 }
345
346 if (pdata->vddvibr_uV) {
347 ret = regulator_set_voltage(info->supplies[1].consumer,
348 pdata->vddvibr_uV,
349 pdata->vddvibr_uV);
350 if (ret) {
351 dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
352 ret);
353 goto err_voltage;
354 }
355 }
356
357 info->workqueue = alloc_workqueue("twl6040-vibra", 0, 0);
358 if (info->workqueue == NULL) {
359 dev_err(info->dev, "couldn't create workqueue\n");
360 ret = -ENOMEM;
361 goto err_voltage;
362 }
363 INIT_WORK(&info->play_work, vibra_play_work);
364
365 return 0;
366
367err_voltage:
368 regulator_bulk_free(ARRAY_SIZE(info->supplies), info->supplies);
369err_regulator:
370 free_irq(info->irq, info);
371err_irq:
372 input_unregister_device(info->input_dev);
373 info->input_dev = NULL;
374err_iff:
375 if (info->input_dev)
376 input_ff_destroy(info->input_dev);
377err_ialloc:
378 input_free_device(info->input_dev);
379err_kzalloc:
380 kfree(info);
381 return ret;
382}
383
384static int __devexit twl6040_vibra_remove(struct platform_device *pdev)
385{
386 struct vibra_info *info = platform_get_drvdata(pdev);
387
388 input_unregister_device(info->input_dev);
389 free_irq(info->irq, info);
390 regulator_bulk_free(ARRAY_SIZE(info->supplies), info->supplies);
391 destroy_workqueue(info->workqueue);
392 kfree(info);
393
394 return 0;
395}
396
397static struct platform_driver twl6040_vibra_driver = {
398 .probe = twl6040_vibra_probe,
399 .remove = __devexit_p(twl6040_vibra_remove),
400 .driver = {
401 .name = "twl6040-vibra",
402 .owner = THIS_MODULE,
403 .pm = &twl6040_vibra_pm_ops,
404 },
405};
406
407static int __init twl6040_vibra_init(void)
408{
409 return platform_driver_register(&twl6040_vibra_driver);
410}
411module_init(twl6040_vibra_init);
412
413static void __exit twl6040_vibra_exit(void)
414{
415 platform_driver_unregister(&twl6040_vibra_driver);
416}
417module_exit(twl6040_vibra_exit);
418
419MODULE_ALIAS("platform:twl6040-vibra");
420MODULE_DESCRIPTION("TWL6040 Vibra driver");
421MODULE_LICENSE("GPL");
422MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
423MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
1/*
2 * twl6040-vibra.c - TWL6040 Vibrator driver
3 *
4 * Author: Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
5 * Author: Misael Lopez Cruz <misael.lopez@ti.com>
6 *
7 * Copyright: (C) 2011 Texas Instruments, Inc.
8 *
9 * Based on twl4030-vibra.c by Henrik Saari <henrik.saari@nokia.com>
10 * Felipe Balbi <felipe.balbi@nokia.com>
11 * Jari Vanhala <ext-javi.vanhala@nokia.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 * 02110-1301 USA
26 *
27 */
28#include <linux/module.h>
29#include <linux/platform_device.h>
30#include <linux/of.h>
31#include <linux/workqueue.h>
32#include <linux/input.h>
33#include <linux/mfd/twl6040.h>
34#include <linux/slab.h>
35#include <linux/delay.h>
36#include <linux/regulator/consumer.h>
37
38#define EFFECT_DIR_180_DEG 0x8000
39
40/* Recommended modulation index 85% */
41#define TWL6040_VIBRA_MOD 85
42
43#define TWL6040_NUM_SUPPLIES 2
44
45struct vibra_info {
46 struct device *dev;
47 struct input_dev *input_dev;
48 struct work_struct play_work;
49 struct mutex mutex;
50 int irq;
51
52 bool enabled;
53 int weak_speed;
54 int strong_speed;
55 int direction;
56
57 unsigned int vibldrv_res;
58 unsigned int vibrdrv_res;
59 unsigned int viblmotor_res;
60 unsigned int vibrmotor_res;
61
62 struct regulator_bulk_data supplies[TWL6040_NUM_SUPPLIES];
63
64 struct twl6040 *twl6040;
65};
66
67static irqreturn_t twl6040_vib_irq_handler(int irq, void *data)
68{
69 struct vibra_info *info = data;
70 struct twl6040 *twl6040 = info->twl6040;
71 u8 status;
72
73 status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
74 if (status & TWL6040_VIBLOCDET) {
75 dev_warn(info->dev, "Left Vibrator overcurrent detected\n");
76 twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLL,
77 TWL6040_VIBENA);
78 }
79 if (status & TWL6040_VIBROCDET) {
80 dev_warn(info->dev, "Right Vibrator overcurrent detected\n");
81 twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLR,
82 TWL6040_VIBENA);
83 }
84
85 return IRQ_HANDLED;
86}
87
88static void twl6040_vibra_enable(struct vibra_info *info)
89{
90 struct twl6040 *twl6040 = info->twl6040;
91 int ret;
92
93 ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
94 if (ret) {
95 dev_err(info->dev, "failed to enable regulators %d\n", ret);
96 return;
97 }
98
99 twl6040_power(info->twl6040, 1);
100 if (twl6040_get_revid(twl6040) <= TWL6040_REV_ES1_1) {
101 /*
102 * ERRATA: Disable overcurrent protection for at least
103 * 3ms when enabling vibrator drivers to avoid false
104 * overcurrent detection
105 */
106 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
107 TWL6040_VIBENA | TWL6040_VIBCTRL);
108 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
109 TWL6040_VIBENA | TWL6040_VIBCTRL);
110 usleep_range(3000, 3500);
111 }
112
113 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
114 TWL6040_VIBENA);
115 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
116 TWL6040_VIBENA);
117
118 info->enabled = true;
119}
120
121static void twl6040_vibra_disable(struct vibra_info *info)
122{
123 struct twl6040 *twl6040 = info->twl6040;
124
125 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL, 0x00);
126 twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR, 0x00);
127 twl6040_power(info->twl6040, 0);
128
129 regulator_bulk_disable(ARRAY_SIZE(info->supplies), info->supplies);
130
131 info->enabled = false;
132}
133
134static u8 twl6040_vibra_code(int vddvib, int vibdrv_res, int motor_res,
135 int speed, int direction)
136{
137 int vpk, max_code;
138 u8 vibdat;
139
140 /* output swing */
141 vpk = (vddvib * motor_res * TWL6040_VIBRA_MOD) /
142 (100 * (vibdrv_res + motor_res));
143
144 /* 50mV per VIBDAT code step */
145 max_code = vpk / 50;
146 if (max_code > TWL6040_VIBDAT_MAX)
147 max_code = TWL6040_VIBDAT_MAX;
148
149 /* scale speed to max allowed code */
150 vibdat = (u8)((speed * max_code) / USHRT_MAX);
151
152 /* 2's complement for direction > 180 degrees */
153 vibdat *= direction;
154
155 return vibdat;
156}
157
158static void twl6040_vibra_set_effect(struct vibra_info *info)
159{
160 struct twl6040 *twl6040 = info->twl6040;
161 u8 vibdatl, vibdatr;
162 int volt;
163
164 /* weak motor */
165 volt = regulator_get_voltage(info->supplies[0].consumer) / 1000;
166 vibdatl = twl6040_vibra_code(volt, info->vibldrv_res,
167 info->viblmotor_res,
168 info->weak_speed, info->direction);
169
170 /* strong motor */
171 volt = regulator_get_voltage(info->supplies[1].consumer) / 1000;
172 vibdatr = twl6040_vibra_code(volt, info->vibrdrv_res,
173 info->vibrmotor_res,
174 info->strong_speed, info->direction);
175
176 twl6040_reg_write(twl6040, TWL6040_REG_VIBDATL, vibdatl);
177 twl6040_reg_write(twl6040, TWL6040_REG_VIBDATR, vibdatr);
178}
179
180static void vibra_play_work(struct work_struct *work)
181{
182 struct vibra_info *info = container_of(work,
183 struct vibra_info, play_work);
184 int ret;
185
186 /* Do not allow effect, while the routing is set to use audio */
187 ret = twl6040_get_vibralr_status(info->twl6040);
188 if (ret & TWL6040_VIBSEL) {
189 dev_info(info->dev, "Vibra is configured for audio\n");
190 return;
191 }
192
193 mutex_lock(&info->mutex);
194
195 if (info->weak_speed || info->strong_speed) {
196 if (!info->enabled)
197 twl6040_vibra_enable(info);
198
199 twl6040_vibra_set_effect(info);
200 } else if (info->enabled)
201 twl6040_vibra_disable(info);
202
203 mutex_unlock(&info->mutex);
204}
205
206static int vibra_play(struct input_dev *input, void *data,
207 struct ff_effect *effect)
208{
209 struct vibra_info *info = input_get_drvdata(input);
210
211 info->weak_speed = effect->u.rumble.weak_magnitude;
212 info->strong_speed = effect->u.rumble.strong_magnitude;
213 info->direction = effect->direction < EFFECT_DIR_180_DEG ? 1 : -1;
214
215 schedule_work(&info->play_work);
216
217 return 0;
218}
219
220static void twl6040_vibra_close(struct input_dev *input)
221{
222 struct vibra_info *info = input_get_drvdata(input);
223
224 cancel_work_sync(&info->play_work);
225
226 mutex_lock(&info->mutex);
227
228 if (info->enabled)
229 twl6040_vibra_disable(info);
230
231 mutex_unlock(&info->mutex);
232}
233
234static int __maybe_unused twl6040_vibra_suspend(struct device *dev)
235{
236 struct platform_device *pdev = to_platform_device(dev);
237 struct vibra_info *info = platform_get_drvdata(pdev);
238
239 mutex_lock(&info->mutex);
240
241 if (info->enabled)
242 twl6040_vibra_disable(info);
243
244 mutex_unlock(&info->mutex);
245
246 return 0;
247}
248
249static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);
250
251static int twl6040_vibra_probe(struct platform_device *pdev)
252{
253 struct device *twl6040_core_dev = pdev->dev.parent;
254 struct device_node *twl6040_core_node;
255 struct vibra_info *info;
256 int vddvibl_uV = 0;
257 int vddvibr_uV = 0;
258 int error;
259
260 of_node_get(twl6040_core_dev->of_node);
261 twl6040_core_node = of_find_node_by_name(twl6040_core_dev->of_node,
262 "vibra");
263 if (!twl6040_core_node) {
264 dev_err(&pdev->dev, "parent of node is missing?\n");
265 return -EINVAL;
266 }
267
268 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
269 if (!info) {
270 of_node_put(twl6040_core_node);
271 dev_err(&pdev->dev, "couldn't allocate memory\n");
272 return -ENOMEM;
273 }
274
275 info->dev = &pdev->dev;
276
277 info->twl6040 = dev_get_drvdata(pdev->dev.parent);
278
279 of_property_read_u32(twl6040_core_node, "ti,vibldrv-res",
280 &info->vibldrv_res);
281 of_property_read_u32(twl6040_core_node, "ti,vibrdrv-res",
282 &info->vibrdrv_res);
283 of_property_read_u32(twl6040_core_node, "ti,viblmotor-res",
284 &info->viblmotor_res);
285 of_property_read_u32(twl6040_core_node, "ti,vibrmotor-res",
286 &info->vibrmotor_res);
287 of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", &vddvibl_uV);
288 of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", &vddvibr_uV);
289
290 of_node_put(twl6040_core_node);
291
292 if ((!info->vibldrv_res && !info->viblmotor_res) ||
293 (!info->vibrdrv_res && !info->vibrmotor_res)) {
294 dev_err(info->dev, "invalid vibra driver/motor resistance\n");
295 return -EINVAL;
296 }
297
298 info->irq = platform_get_irq(pdev, 0);
299 if (info->irq < 0) {
300 dev_err(info->dev, "invalid irq\n");
301 return -EINVAL;
302 }
303
304 mutex_init(&info->mutex);
305
306 error = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
307 twl6040_vib_irq_handler,
308 IRQF_ONESHOT,
309 "twl6040_irq_vib", info);
310 if (error) {
311 dev_err(info->dev, "VIB IRQ request failed: %d\n", error);
312 return error;
313 }
314
315 info->supplies[0].supply = "vddvibl";
316 info->supplies[1].supply = "vddvibr";
317 /*
318 * When booted with Device tree the regulators are attached to the
319 * parent device (twl6040 MFD core)
320 */
321 error = devm_regulator_bulk_get(twl6040_core_dev,
322 ARRAY_SIZE(info->supplies),
323 info->supplies);
324 if (error) {
325 dev_err(info->dev, "couldn't get regulators %d\n", error);
326 return error;
327 }
328
329 if (vddvibl_uV) {
330 error = regulator_set_voltage(info->supplies[0].consumer,
331 vddvibl_uV, vddvibl_uV);
332 if (error) {
333 dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
334 error);
335 return error;
336 }
337 }
338
339 if (vddvibr_uV) {
340 error = regulator_set_voltage(info->supplies[1].consumer,
341 vddvibr_uV, vddvibr_uV);
342 if (error) {
343 dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
344 error);
345 return error;
346 }
347 }
348
349 INIT_WORK(&info->play_work, vibra_play_work);
350
351 info->input_dev = devm_input_allocate_device(&pdev->dev);
352 if (!info->input_dev) {
353 dev_err(info->dev, "couldn't allocate input device\n");
354 return -ENOMEM;
355 }
356
357 input_set_drvdata(info->input_dev, info);
358
359 info->input_dev->name = "twl6040:vibrator";
360 info->input_dev->id.version = 1;
361 info->input_dev->close = twl6040_vibra_close;
362 __set_bit(FF_RUMBLE, info->input_dev->ffbit);
363
364 error = input_ff_create_memless(info->input_dev, NULL, vibra_play);
365 if (error) {
366 dev_err(info->dev, "couldn't register vibrator to FF\n");
367 return error;
368 }
369
370 error = input_register_device(info->input_dev);
371 if (error) {
372 dev_err(info->dev, "couldn't register input device\n");
373 return error;
374 }
375
376 platform_set_drvdata(pdev, info);
377
378 return 0;
379}
380
381static struct platform_driver twl6040_vibra_driver = {
382 .probe = twl6040_vibra_probe,
383 .driver = {
384 .name = "twl6040-vibra",
385 .pm = &twl6040_vibra_pm_ops,
386 },
387};
388module_platform_driver(twl6040_vibra_driver);
389
390MODULE_ALIAS("platform:twl6040-vibra");
391MODULE_DESCRIPTION("TWL6040 Vibra driver");
392MODULE_LICENSE("GPL");
393MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
394MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");