2 * Copyright (C) 2012 Simon Budig, <simon.budig@kernelconcepts.de>
3 * Lothar Waßmann <LW@KARO-electronics.de> (DT support)
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * This is a driver for the EDT "Polytouch" family of touch controllers
21 * based on the FocalTech FT5x06 line of chips.
23 * Development of this driver has been sponsored by Glyn:
24 * http://www.glyn.com/Products/Displays
27 #include <linux/module.h>
28 #include <linux/ratelimit.h>
29 #include <linux/interrupt.h>
30 #include <linux/input.h>
31 #include <linux/i2c.h>
32 #include <linux/uaccess.h>
33 #include <linux/delay.h>
34 #include <linux/debugfs.h>
35 #include <linux/slab.h>
36 #include <linux/gpio.h>
37 #include <linux/of_gpio.h>
38 #include <linux/input/mt.h>
39 #include <linux/input/edt-ft5x06.h>
41 #define MAX_SUPPORT_POINTS 5
43 #define WORK_REGISTER_THRESHOLD 0x00
44 #define WORK_REGISTER_REPORT_RATE 0x08
45 #define WORK_REGISTER_GAIN 0x30
46 #define WORK_REGISTER_OFFSET 0x31
47 #define WORK_REGISTER_NUM_X 0x33
48 #define WORK_REGISTER_NUM_Y 0x34
50 #define WORK_REGISTER_OPMODE 0x3c
51 #define FACTORY_REGISTER_OPMODE 0x01
53 #define TOUCH_EVENT_DOWN 0x00
54 #define TOUCH_EVENT_UP 0x01
55 #define TOUCH_EVENT_ON 0x02
56 #define TOUCH_EVENT_RESERVED 0x03
58 #define EDT_NAME_LEN 23
59 #define EDT_SWITCH_MODE_RETRIES 10
60 #define EDT_SWITCH_MODE_DELAY 5 /* msec */
61 #define EDT_RAW_DATA_RETRIES 100
62 #define EDT_RAW_DATA_DELAY 1 /* msec */
64 struct edt_ft5x06_ts_data {
65 struct i2c_client *client;
66 struct input_dev *input;
74 #if defined(CONFIG_DEBUG_FS)
75 struct dentry *debug_dir;
87 char name[EDT_NAME_LEN];
90 static int edt_ft5x06_ts_readwrite(struct i2c_client *client,
91 u16 wr_len, u8 *wr_buf,
92 u16 rd_len, u8 *rd_buf)
94 struct i2c_msg wrmsg[2];
99 wrmsg[i].addr = client->addr;
101 wrmsg[i].len = wr_len;
102 wrmsg[i].buf = wr_buf;
106 wrmsg[i].addr = client->addr;
107 wrmsg[i].flags = I2C_M_RD;
108 wrmsg[i].len = rd_len;
109 wrmsg[i].buf = rd_buf;
113 ret = i2c_transfer(client->adapter, wrmsg, i);
122 static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata,
128 for (i = 0; i < buflen - 1; i++)
131 if (crc != buf[buflen-1]) {
132 dev_err_ratelimited(&tsdata->client->dev,
133 "crc error: 0x%02x expected, got 0x%02x\n",
141 static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
143 struct edt_ft5x06_ts_data *tsdata = dev_id;
144 struct device *dev = &tsdata->client->dev;
147 int i, type, x, y, id;
150 memset(rdbuf, 0, sizeof(rdbuf));
152 error = edt_ft5x06_ts_readwrite(tsdata->client,
154 sizeof(rdbuf), rdbuf);
156 dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n",
161 if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa || rdbuf[2] != 26) {
162 dev_err_ratelimited(dev, "Unexpected header: %02x%02x%02x!\n",
163 rdbuf[0], rdbuf[1], rdbuf[2]);
167 if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, 26))
170 for (i = 0; i < MAX_SUPPORT_POINTS; i++) {
171 u8 *buf = &rdbuf[i * 4 + 5];
175 /* ignore Reserved events */
176 if (type == TOUCH_EVENT_RESERVED)
179 x = ((buf[0] << 8) | buf[1]) & 0x0fff;
180 y = ((buf[2] << 8) | buf[3]) & 0x0fff;
181 id = (buf[2] >> 4) & 0x0f;
182 down = type != TOUCH_EVENT_UP;
184 input_mt_slot(tsdata->input, id);
185 input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down);
190 input_report_abs(tsdata->input, ABS_MT_POSITION_X, x);
191 input_report_abs(tsdata->input, ABS_MT_POSITION_Y, y);
194 input_mt_report_pointer_emulation(tsdata->input, true);
195 input_sync(tsdata->input);
201 static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata,
206 wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
207 wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
209 wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2];
211 return edt_ft5x06_ts_readwrite(tsdata->client, 4, wrbuf, 0, NULL);
214 static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata,
217 u8 wrbuf[2], rdbuf[2];
220 wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
221 wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
222 wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40;
224 error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2, rdbuf);
228 if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) {
229 dev_err(&tsdata->client->dev,
230 "crc error: 0x%02x expected, got 0x%02x\n",
231 wrbuf[0] ^ wrbuf[1] ^ rdbuf[0], rdbuf[1]);
238 struct edt_ft5x06_attribute {
239 struct device_attribute dattr;
246 #define EDT_ATTR(_field, _mode, _addr, _limit_low, _limit_high) \
247 struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \
248 .dattr = __ATTR(_field, _mode, \
249 edt_ft5x06_setting_show, \
250 edt_ft5x06_setting_store), \
252 offsetof(struct edt_ft5x06_ts_data, _field), \
253 .limit_low = _limit_low, \
254 .limit_high = _limit_high, \
258 static ssize_t edt_ft5x06_setting_show(struct device *dev,
259 struct device_attribute *dattr,
262 struct i2c_client *client = to_i2c_client(dev);
263 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
264 struct edt_ft5x06_attribute *attr =
265 container_of(dattr, struct edt_ft5x06_attribute, dattr);
266 u8 *field = (u8 *)tsdata + attr->field_offset;
271 mutex_lock(&tsdata->mutex);
273 if (tsdata->factory_mode) {
278 val = edt_ft5x06_register_read(tsdata, attr->addr);
281 dev_err(&tsdata->client->dev,
282 "Failed to fetch attribute %s, error %d\n",
283 dattr->attr.name, error);
288 dev_warn(&tsdata->client->dev,
289 "%s: read (%d) and stored value (%d) differ\n",
290 dattr->attr.name, val, *field);
294 count = scnprintf(buf, PAGE_SIZE, "%d\n", val);
296 mutex_unlock(&tsdata->mutex);
297 return error ?: count;
300 static ssize_t edt_ft5x06_setting_store(struct device *dev,
301 struct device_attribute *dattr,
302 const char *buf, size_t count)
304 struct i2c_client *client = to_i2c_client(dev);
305 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
306 struct edt_ft5x06_attribute *attr =
307 container_of(dattr, struct edt_ft5x06_attribute, dattr);
308 u8 *field = (u8 *)tsdata + attr->field_offset;
312 mutex_lock(&tsdata->mutex);
314 if (tsdata->factory_mode) {
319 error = kstrtouint(buf, 0, &val);
323 if (val < attr->limit_low || val > attr->limit_high) {
328 error = edt_ft5x06_register_write(tsdata, attr->addr, val);
330 dev_err(&tsdata->client->dev,
331 "Failed to update attribute %s, error: %d\n",
332 dattr->attr.name, error);
339 mutex_unlock(&tsdata->mutex);
340 return error ?: count;
343 static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN, 0, 31);
344 static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET, 0, 31);
345 static EDT_ATTR(threshold, S_IWUSR | S_IRUGO,
346 WORK_REGISTER_THRESHOLD, 20, 80);
347 static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO,
348 WORK_REGISTER_REPORT_RATE, 3, 14);
350 static struct attribute *edt_ft5x06_attrs[] = {
351 &edt_ft5x06_attr_gain.dattr.attr,
352 &edt_ft5x06_attr_offset.dattr.attr,
353 &edt_ft5x06_attr_threshold.dattr.attr,
354 &edt_ft5x06_attr_report_rate.dattr.attr,
358 static const struct attribute_group edt_ft5x06_attr_group = {
359 .attrs = edt_ft5x06_attrs,
362 #ifdef CONFIG_DEBUG_FS
363 static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
365 struct i2c_client *client = tsdata->client;
366 int retries = EDT_SWITCH_MODE_RETRIES;
370 disable_irq(client->irq);
372 if (!tsdata->raw_buffer) {
373 tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y *
375 tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL);
376 if (!tsdata->raw_buffer) {
382 /* mode register is 0x3c when in the work mode */
383 error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03);
385 dev_err(&client->dev,
386 "failed to switch to factory mode, error %d\n", error);
390 tsdata->factory_mode = true;
392 mdelay(EDT_SWITCH_MODE_DELAY);
393 /* mode register is 0x01 when in factory mode */
394 ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE);
397 } while (--retries > 0);
400 dev_err(&client->dev, "not in factory mode after %dms.\n",
401 EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY);
409 kfree(tsdata->raw_buffer);
410 tsdata->raw_buffer = NULL;
411 tsdata->factory_mode = false;
412 enable_irq(client->irq);
417 static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
419 struct i2c_client *client = tsdata->client;
420 int retries = EDT_SWITCH_MODE_RETRIES;
424 /* mode register is 0x01 when in the factory mode */
425 error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1);
427 dev_err(&client->dev,
428 "failed to switch to work mode, error: %d\n", error);
432 tsdata->factory_mode = false;
435 mdelay(EDT_SWITCH_MODE_DELAY);
436 /* mode register is 0x01 when in factory mode */
437 ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE);
440 } while (--retries > 0);
443 dev_err(&client->dev, "not in work mode after %dms.\n",
444 EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY);
445 tsdata->factory_mode = true;
449 kfree(tsdata->raw_buffer);
450 tsdata->raw_buffer = NULL;
452 /* restore parameters */
453 edt_ft5x06_register_write(tsdata, WORK_REGISTER_THRESHOLD,
455 edt_ft5x06_register_write(tsdata, WORK_REGISTER_GAIN,
457 edt_ft5x06_register_write(tsdata, WORK_REGISTER_OFFSET,
459 edt_ft5x06_register_write(tsdata, WORK_REGISTER_REPORT_RATE,
460 tsdata->report_rate);
462 enable_irq(client->irq);
467 static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode)
469 struct edt_ft5x06_ts_data *tsdata = data;
471 *mode = tsdata->factory_mode;
476 static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode)
478 struct edt_ft5x06_ts_data *tsdata = data;
484 mutex_lock(&tsdata->mutex);
486 if (mode != tsdata->factory_mode) {
487 retval = mode ? edt_ft5x06_factory_mode(tsdata) :
488 edt_ft5x06_work_mode(tsdata);
491 mutex_unlock(&tsdata->mutex);
496 DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get,
497 edt_ft5x06_debugfs_mode_set, "%llu\n");
499 static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
500 char __user *buf, size_t count, loff_t *off)
502 struct edt_ft5x06_ts_data *tsdata = file->private_data;
503 struct i2c_client *client = tsdata->client;
504 int retries = EDT_RAW_DATA_RETRIES;
511 if (*off < 0 || *off >= tsdata->raw_bufsize)
514 mutex_lock(&tsdata->mutex);
516 if (!tsdata->factory_mode || !tsdata->raw_buffer) {
521 error = edt_ft5x06_register_write(tsdata, 0x08, 0x01);
523 dev_dbg(&client->dev,
524 "failed to write 0x08 register, error %d\n", error);
529 msleep(EDT_RAW_DATA_DELAY);
530 val = edt_ft5x06_register_read(tsdata, 0x08);
533 } while (--retries > 0);
537 dev_dbg(&client->dev,
538 "failed to read 0x08 register, error %d\n", error);
543 dev_dbg(&client->dev,
544 "timed out waiting for register to settle\n");
549 rdbuf = tsdata->raw_buffer;
550 colbytes = tsdata->num_y * sizeof(u16);
554 for (i = 0; i < tsdata->num_x; i++) {
555 wrbuf[2] = i; /* column index */
556 error = edt_ft5x06_ts_readwrite(tsdata->client,
557 sizeof(wrbuf), wrbuf,
565 read = min_t(size_t, count, tsdata->raw_bufsize - *off);
566 if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) {
573 mutex_unlock(&tsdata->mutex);
574 return error ?: read;
577 static const struct file_operations debugfs_raw_data_fops = {
579 .read = edt_ft5x06_debugfs_raw_data_read,
583 edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
584 const char *debugfs_name)
586 tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL);
587 if (!tsdata->debug_dir)
590 debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x);
591 debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y);
593 debugfs_create_file("mode", S_IRUSR | S_IWUSR,
594 tsdata->debug_dir, tsdata, &debugfs_mode_fops);
595 debugfs_create_file("raw_data", S_IRUSR,
596 tsdata->debug_dir, tsdata, &debugfs_raw_data_fops);
600 edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
602 if (tsdata->debug_dir)
603 debugfs_remove_recursive(tsdata->debug_dir);
604 kfree(tsdata->raw_buffer);
610 edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
611 const char *debugfs_name)
616 edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
620 #endif /* CONFIG_DEBUGFS */
622 static int edt_ft5x06_ts_reset(struct i2c_client *client,
623 struct edt_ft5x06_ts_data *tsdata)
627 if (gpio_is_valid(tsdata->wake_pin)) {
628 error = devm_gpio_request_one(&client->dev,
629 tsdata->wake_pin, GPIOF_OUT_INIT_LOW,
632 dev_err(&client->dev,
633 "Failed to request GPIO %d as wake pin, error %d\n",
634 tsdata->wake_pin, error);
639 gpio_set_value(tsdata->wake_pin, 1);
641 if (gpio_is_valid(tsdata->reset_pin)) {
642 /* this pulls reset down, enabling the low active reset */
643 error = devm_gpio_request_one(&client->dev,
644 tsdata->reset_pin, GPIOF_OUT_INIT_LOW,
647 dev_err(&client->dev,
648 "Failed to request GPIO %d as reset pin, error %d\n",
649 tsdata->reset_pin, error);
654 gpio_set_value(tsdata->reset_pin, 1);
661 static int edt_ft5x06_ts_identify(struct i2c_client *client,
665 u8 rdbuf[EDT_NAME_LEN];
669 error = edt_ft5x06_ts_readwrite(client, 1, "\xbb",
670 EDT_NAME_LEN - 1, rdbuf);
674 /* remove last '$' end marker */
675 rdbuf[EDT_NAME_LEN - 1] = '\0';
676 if (rdbuf[EDT_NAME_LEN - 2] == '$')
677 rdbuf[EDT_NAME_LEN - 2] = '\0';
679 /* look for Model/Version separator */
680 p = strchr(rdbuf, '*');
684 strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN);
685 strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);
690 #define EDT_ATTR_CHECKSET(name, reg) \
691 if (pdata->name >= edt_ft5x06_attr_##name.limit_low && \
692 pdata->name <= edt_ft5x06_attr_##name.limit_high) \
693 edt_ft5x06_register_write(tsdata, reg, pdata->name)
695 #define EDT_GET_PROP(name, reg) { \
697 if (of_property_read_u32(np, #name, &val) == 0) \
698 edt_ft5x06_register_write(tsdata, reg, val); \
701 static void edt_ft5x06_ts_get_dt_defaults(struct device_node *np,
702 struct edt_ft5x06_ts_data *tsdata)
704 EDT_GET_PROP(threshold, WORK_REGISTER_THRESHOLD);
705 EDT_GET_PROP(gain, WORK_REGISTER_GAIN);
706 EDT_GET_PROP(offset, WORK_REGISTER_OFFSET);
710 edt_ft5x06_ts_get_defaults(struct edt_ft5x06_ts_data *tsdata,
711 const struct edt_ft5x06_platform_data *pdata)
713 if (!pdata->use_parameters)
716 /* pick up defaults from the platform data */
717 EDT_ATTR_CHECKSET(threshold, WORK_REGISTER_THRESHOLD);
718 EDT_ATTR_CHECKSET(gain, WORK_REGISTER_GAIN);
719 EDT_ATTR_CHECKSET(offset, WORK_REGISTER_OFFSET);
720 EDT_ATTR_CHECKSET(report_rate, WORK_REGISTER_REPORT_RATE);
724 edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
726 tsdata->threshold = edt_ft5x06_register_read(tsdata,
727 WORK_REGISTER_THRESHOLD);
728 tsdata->gain = edt_ft5x06_register_read(tsdata, WORK_REGISTER_GAIN);
729 tsdata->offset = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OFFSET);
730 tsdata->report_rate = edt_ft5x06_register_read(tsdata,
731 WORK_REGISTER_REPORT_RATE);
732 tsdata->num_x = edt_ft5x06_register_read(tsdata, WORK_REGISTER_NUM_X);
733 tsdata->num_y = edt_ft5x06_register_read(tsdata, WORK_REGISTER_NUM_Y);
737 static int edt_ft5x06_i2c_ts_probe_dt(struct device *dev,
738 struct edt_ft5x06_ts_data *tsdata)
740 struct device_node *np = dev->of_node;
743 * irq_pin is not needed for DT setup.
744 * irq is associated via 'interrupts' property in DT
746 tsdata->irq_pin = -EINVAL;
747 tsdata->reset_pin = of_get_named_gpio(np, "reset-gpios", 0);
748 tsdata->wake_pin = of_get_named_gpio(np, "wake-gpios", 0);
753 static inline int edt_ft5x06_i2c_ts_probe_dt(struct device *dev,
754 struct edt_ft5x06_ts_data *tsdata)
760 static int edt_ft5x06_ts_probe(struct i2c_client *client,
761 const struct i2c_device_id *id)
763 const struct edt_ft5x06_platform_data *pdata =
764 dev_get_platdata(&client->dev);
765 struct edt_ft5x06_ts_data *tsdata;
766 struct input_dev *input;
768 char fw_version[EDT_NAME_LEN];
770 dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n");
772 tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL);
774 dev_err(&client->dev, "failed to allocate driver data.\n");
779 error = edt_ft5x06_i2c_ts_probe_dt(&client->dev, tsdata);
781 dev_err(&client->dev,
782 "DT probe failed and no platform data present\n");
786 tsdata->reset_pin = pdata->reset_pin;
787 tsdata->irq_pin = pdata->irq_pin;
788 tsdata->wake_pin = -EINVAL;
791 error = edt_ft5x06_ts_reset(client, tsdata);
795 if (gpio_is_valid(tsdata->irq_pin)) {
796 error = devm_gpio_request_one(&client->dev, tsdata->irq_pin,
797 GPIOF_IN, "edt-ft5x06 irq");
799 dev_err(&client->dev,
800 "Failed to request GPIO %d, error %d\n",
801 tsdata->irq_pin, error);
806 input = devm_input_allocate_device(&client->dev);
808 dev_err(&client->dev, "failed to allocate input device.\n");
812 mutex_init(&tsdata->mutex);
813 tsdata->client = client;
814 tsdata->input = input;
815 tsdata->factory_mode = false;
817 error = edt_ft5x06_ts_identify(client, tsdata->name, fw_version);
819 dev_err(&client->dev, "touchscreen probe failed\n");
824 edt_ft5x06_ts_get_dt_defaults(client->dev.of_node, tsdata);
826 edt_ft5x06_ts_get_defaults(tsdata, pdata);
828 edt_ft5x06_ts_get_parameters(tsdata);
830 dev_dbg(&client->dev,
831 "Model \"%s\", Rev. \"%s\", %dx%d sensors\n",
832 tsdata->name, fw_version, tsdata->num_x, tsdata->num_y);
834 input->name = tsdata->name;
835 input->id.bustype = BUS_I2C;
836 input->dev.parent = &client->dev;
838 __set_bit(EV_SYN, input->evbit);
839 __set_bit(EV_KEY, input->evbit);
840 __set_bit(EV_ABS, input->evbit);
841 __set_bit(BTN_TOUCH, input->keybit);
842 input_set_abs_params(input, ABS_X, 0, tsdata->num_x * 64 - 1, 0, 0);
843 input_set_abs_params(input, ABS_Y, 0, tsdata->num_y * 64 - 1, 0, 0);
844 input_set_abs_params(input, ABS_MT_POSITION_X,
845 0, tsdata->num_x * 64 - 1, 0, 0);
846 input_set_abs_params(input, ABS_MT_POSITION_Y,
847 0, tsdata->num_y * 64 - 1, 0, 0);
848 error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, 0);
850 dev_err(&client->dev, "Unable to init MT slots.\n");
854 input_set_drvdata(input, tsdata);
855 i2c_set_clientdata(client, tsdata);
857 error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
859 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
860 client->name, tsdata);
862 dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
866 error = sysfs_create_group(&client->dev.kobj, &edt_ft5x06_attr_group);
870 error = input_register_device(input);
872 goto err_remove_attrs;
874 edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev));
875 device_init_wakeup(&client->dev, 1);
877 dev_dbg(&client->dev,
878 "EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n",
879 client->irq, tsdata->wake_pin, tsdata->reset_pin);
884 sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group);
888 static int edt_ft5x06_ts_remove(struct i2c_client *client)
890 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
892 edt_ft5x06_ts_teardown_debugfs(tsdata);
893 sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group);
898 #ifdef CONFIG_PM_SLEEP
899 static int edt_ft5x06_ts_suspend(struct device *dev)
901 struct i2c_client *client = to_i2c_client(dev);
903 if (device_may_wakeup(dev))
904 enable_irq_wake(client->irq);
909 static int edt_ft5x06_ts_resume(struct device *dev)
911 struct i2c_client *client = to_i2c_client(dev);
913 if (device_may_wakeup(dev))
914 disable_irq_wake(client->irq);
920 static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops,
921 edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume);
923 static const struct i2c_device_id edt_ft5x06_ts_id[] = {
924 { "edt-ft5x06", 0, },
927 MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id);
930 static const struct of_device_id edt_ft5x06_of_match[] = {
931 { .compatible = "edt,edt-ft5206", },
932 { .compatible = "edt,edt-ft5306", },
933 { .compatible = "edt,edt-ft5406", },
936 MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match);
939 static struct i2c_driver edt_ft5x06_ts_driver = {
941 .owner = THIS_MODULE,
942 .name = "edt_ft5x06",
943 .of_match_table = of_match_ptr(edt_ft5x06_of_match),
944 .pm = &edt_ft5x06_ts_pm_ops,
946 .id_table = edt_ft5x06_ts_id,
947 .probe = edt_ft5x06_ts_probe,
948 .remove = edt_ft5x06_ts_remove,
951 module_i2c_driver(edt_ft5x06_ts_driver);
953 MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>");
954 MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver");
955 MODULE_LICENSE("GPL");