2 * Copyright (C) 2012 Simon Budig, <simon.budig@kernelconcepts.de>
3 * Daniel Wagener <daniel.wagener@kernelconcepts.de> (M09 firmware support)
4 * Lothar Waßmann <LW@KARO-electronics.de> (DT support)
6 * This software is licensed under the terms of the GNU General Public
7 * License version 2, as published by the Free Software Foundation, and
8 * may be copied, distributed, and modified under those terms.
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.
15 * You should have received a copy of the GNU General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * This is a driver for the EDT "Polytouch" family of touch controllers
22 * based on the FocalTech FT5x06 line of chips.
24 * Development of this driver has been sponsored by Glyn:
25 * http://www.glyn.com/Products/Displays
28 #include <linux/module.h>
29 #include <linux/ratelimit.h>
30 #include <linux/interrupt.h>
31 #include <linux/input.h>
32 #include <linux/i2c.h>
33 #include <linux/uaccess.h>
34 #include <linux/delay.h>
35 #include <linux/debugfs.h>
36 #include <linux/slab.h>
37 #include <linux/gpio/consumer.h>
38 #include <linux/input/mt.h>
39 #include <linux/input/touchscreen.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 M09_REGISTER_THRESHOLD 0x80
51 #define M09_REGISTER_GAIN 0x92
52 #define M09_REGISTER_OFFSET 0x93
53 #define M09_REGISTER_NUM_X 0x94
54 #define M09_REGISTER_NUM_Y 0x95
56 #define NO_REGISTER 0xff
58 #define WORK_REGISTER_OPMODE 0x3c
59 #define FACTORY_REGISTER_OPMODE 0x01
61 #define TOUCH_EVENT_DOWN 0x00
62 #define TOUCH_EVENT_UP 0x01
63 #define TOUCH_EVENT_ON 0x02
64 #define TOUCH_EVENT_RESERVED 0x03
66 #define EDT_NAME_LEN 23
67 #define EDT_SWITCH_MODE_RETRIES 10
68 #define EDT_SWITCH_MODE_DELAY 5 /* msec */
69 #define EDT_RAW_DATA_RETRIES 100
70 #define EDT_RAW_DATA_DELAY 1 /* msec */
86 struct edt_ft5x06_ts_data {
87 struct i2c_client *client;
88 struct input_dev *input;
92 struct gpio_desc *reset_gpio;
93 struct gpio_desc *wake_gpio;
95 #if defined(CONFIG_DEBUG_FS)
96 struct dentry *debug_dir;
108 char name[EDT_NAME_LEN];
110 struct edt_reg_addr reg_addr;
111 enum edt_ver version;
114 static int edt_ft5x06_ts_readwrite(struct i2c_client *client,
115 u16 wr_len, u8 *wr_buf,
116 u16 rd_len, u8 *rd_buf)
118 struct i2c_msg wrmsg[2];
123 wrmsg[i].addr = client->addr;
125 wrmsg[i].len = wr_len;
126 wrmsg[i].buf = wr_buf;
130 wrmsg[i].addr = client->addr;
131 wrmsg[i].flags = I2C_M_RD;
132 wrmsg[i].len = rd_len;
133 wrmsg[i].buf = rd_buf;
137 ret = i2c_transfer(client->adapter, wrmsg, i);
146 static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata,
152 for (i = 0; i < buflen - 1; i++)
155 if (crc != buf[buflen-1]) {
156 dev_err_ratelimited(&tsdata->client->dev,
157 "crc error: 0x%02x expected, got 0x%02x\n",
165 static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
167 struct edt_ft5x06_ts_data *tsdata = dev_id;
168 struct device *dev = &tsdata->client->dev;
171 int i, type, x, y, id;
172 int offset, tplen, datalen;
175 switch (tsdata->version) {
177 cmd = 0xf9; /* tell the controller to send touch data */
178 offset = 5; /* where the actual touch data starts */
179 tplen = 4; /* data comes in so called frames */
180 datalen = 26; /* how much bytes to listen for */
194 memset(rdbuf, 0, sizeof(rdbuf));
196 error = edt_ft5x06_ts_readwrite(tsdata->client,
200 dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n",
205 /* M09 does not send header or CRC */
206 if (tsdata->version == M06) {
207 if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa ||
208 rdbuf[2] != datalen) {
209 dev_err_ratelimited(dev,
210 "Unexpected header: %02x%02x%02x!\n",
211 rdbuf[0], rdbuf[1], rdbuf[2]);
215 if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen))
219 for (i = 0; i < MAX_SUPPORT_POINTS; i++) {
220 u8 *buf = &rdbuf[i * tplen + offset];
224 /* ignore Reserved events */
225 if (type == TOUCH_EVENT_RESERVED)
228 /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */
229 if (tsdata->version == M06 && type == TOUCH_EVENT_DOWN)
232 x = ((buf[0] << 8) | buf[1]) & 0x0fff;
233 y = ((buf[2] << 8) | buf[3]) & 0x0fff;
234 id = (buf[2] >> 4) & 0x0f;
235 down = type != TOUCH_EVENT_UP;
237 input_mt_slot(tsdata->input, id);
238 input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down);
243 input_report_abs(tsdata->input, ABS_MT_POSITION_X, x);
244 input_report_abs(tsdata->input, ABS_MT_POSITION_Y, y);
247 input_mt_report_pointer_emulation(tsdata->input, true);
248 input_sync(tsdata->input);
254 static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata,
259 switch (tsdata->version) {
261 wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
262 wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
264 wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2];
265 return edt_ft5x06_ts_readwrite(tsdata->client, 4,
271 return edt_ft5x06_ts_readwrite(tsdata->client, 2,
279 static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata,
282 u8 wrbuf[2], rdbuf[2];
285 switch (tsdata->version) {
287 wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc;
288 wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f;
289 wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40;
291 error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2,
296 if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) {
297 dev_err(&tsdata->client->dev,
298 "crc error: 0x%02x expected, got 0x%02x\n",
299 wrbuf[0] ^ wrbuf[1] ^ rdbuf[0],
307 error = edt_ft5x06_ts_readwrite(tsdata->client, 1,
320 struct edt_ft5x06_attribute {
321 struct device_attribute dattr;
329 #define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, \
330 _limit_low, _limit_high) \
331 struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \
332 .dattr = __ATTR(_field, _mode, \
333 edt_ft5x06_setting_show, \
334 edt_ft5x06_setting_store), \
335 .field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \
336 .addr_m06 = _addr_m06, \
337 .addr_m09 = _addr_m09, \
338 .limit_low = _limit_low, \
339 .limit_high = _limit_high, \
342 static ssize_t edt_ft5x06_setting_show(struct device *dev,
343 struct device_attribute *dattr,
346 struct i2c_client *client = to_i2c_client(dev);
347 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
348 struct edt_ft5x06_attribute *attr =
349 container_of(dattr, struct edt_ft5x06_attribute, dattr);
350 u8 *field = (u8 *)tsdata + attr->field_offset;
356 mutex_lock(&tsdata->mutex);
358 if (tsdata->factory_mode) {
363 switch (tsdata->version) {
365 addr = attr->addr_m06;
369 addr = attr->addr_m09;
377 if (addr != NO_REGISTER) {
378 val = edt_ft5x06_register_read(tsdata, addr);
381 dev_err(&tsdata->client->dev,
382 "Failed to fetch attribute %s, error %d\n",
383 dattr->attr.name, error);
391 dev_warn(&tsdata->client->dev,
392 "%s: read (%d) and stored value (%d) differ\n",
393 dattr->attr.name, val, *field);
397 count = scnprintf(buf, PAGE_SIZE, "%d\n", val);
399 mutex_unlock(&tsdata->mutex);
400 return error ?: count;
403 static ssize_t edt_ft5x06_setting_store(struct device *dev,
404 struct device_attribute *dattr,
405 const char *buf, size_t count)
407 struct i2c_client *client = to_i2c_client(dev);
408 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
409 struct edt_ft5x06_attribute *attr =
410 container_of(dattr, struct edt_ft5x06_attribute, dattr);
411 u8 *field = (u8 *)tsdata + attr->field_offset;
416 mutex_lock(&tsdata->mutex);
418 if (tsdata->factory_mode) {
423 error = kstrtouint(buf, 0, &val);
427 if (val < attr->limit_low || val > attr->limit_high) {
432 switch (tsdata->version) {
434 addr = attr->addr_m06;
438 addr = attr->addr_m09;
446 if (addr != NO_REGISTER) {
447 error = edt_ft5x06_register_write(tsdata, addr, val);
449 dev_err(&tsdata->client->dev,
450 "Failed to update attribute %s, error: %d\n",
451 dattr->attr.name, error);
458 mutex_unlock(&tsdata->mutex);
459 return error ?: count;
462 static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN,
463 M09_REGISTER_GAIN, 0, 31);
464 static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET,
465 M09_REGISTER_OFFSET, 0, 31);
466 static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD,
467 M09_REGISTER_THRESHOLD, 20, 80);
468 static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE,
471 static struct attribute *edt_ft5x06_attrs[] = {
472 &edt_ft5x06_attr_gain.dattr.attr,
473 &edt_ft5x06_attr_offset.dattr.attr,
474 &edt_ft5x06_attr_threshold.dattr.attr,
475 &edt_ft5x06_attr_report_rate.dattr.attr,
479 static const struct attribute_group edt_ft5x06_attr_group = {
480 .attrs = edt_ft5x06_attrs,
483 #ifdef CONFIG_DEBUG_FS
484 static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata)
486 struct i2c_client *client = tsdata->client;
487 int retries = EDT_SWITCH_MODE_RETRIES;
491 disable_irq(client->irq);
493 if (!tsdata->raw_buffer) {
494 tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y *
496 tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL);
497 if (!tsdata->raw_buffer) {
503 /* mode register is 0x3c when in the work mode */
504 if (tsdata->version == M09)
507 error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03);
509 dev_err(&client->dev,
510 "failed to switch to factory mode, error %d\n", error);
514 tsdata->factory_mode = true;
516 mdelay(EDT_SWITCH_MODE_DELAY);
517 /* mode register is 0x01 when in factory mode */
518 ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE);
521 } while (--retries > 0);
524 dev_err(&client->dev, "not in factory mode after %dms.\n",
525 EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY);
533 kfree(tsdata->raw_buffer);
534 tsdata->raw_buffer = NULL;
535 tsdata->factory_mode = false;
536 enable_irq(client->irq);
541 dev_err(&client->dev, "No factory mode support for M09\n");
546 static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
548 struct i2c_client *client = tsdata->client;
549 int retries = EDT_SWITCH_MODE_RETRIES;
550 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
554 /* mode register is 0x01 when in the factory mode */
555 error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1);
557 dev_err(&client->dev,
558 "failed to switch to work mode, error: %d\n", error);
562 tsdata->factory_mode = false;
565 mdelay(EDT_SWITCH_MODE_DELAY);
566 /* mode register is 0x01 when in factory mode */
567 ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE);
570 } while (--retries > 0);
573 dev_err(&client->dev, "not in work mode after %dms.\n",
574 EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY);
575 tsdata->factory_mode = true;
579 kfree(tsdata->raw_buffer);
580 tsdata->raw_buffer = NULL;
582 /* restore parameters */
583 edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold,
585 edt_ft5x06_register_write(tsdata, reg_addr->reg_gain,
587 edt_ft5x06_register_write(tsdata, reg_addr->reg_offset,
589 if (reg_addr->reg_report_rate)
590 edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate,
591 tsdata->report_rate);
593 enable_irq(client->irq);
598 static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode)
600 struct edt_ft5x06_ts_data *tsdata = data;
602 *mode = tsdata->factory_mode;
607 static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode)
609 struct edt_ft5x06_ts_data *tsdata = data;
615 mutex_lock(&tsdata->mutex);
617 if (mode != tsdata->factory_mode) {
618 retval = mode ? edt_ft5x06_factory_mode(tsdata) :
619 edt_ft5x06_work_mode(tsdata);
622 mutex_unlock(&tsdata->mutex);
627 DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get,
628 edt_ft5x06_debugfs_mode_set, "%llu\n");
630 static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
631 char __user *buf, size_t count, loff_t *off)
633 struct edt_ft5x06_ts_data *tsdata = file->private_data;
634 struct i2c_client *client = tsdata->client;
635 int retries = EDT_RAW_DATA_RETRIES;
642 if (*off < 0 || *off >= tsdata->raw_bufsize)
645 mutex_lock(&tsdata->mutex);
647 if (!tsdata->factory_mode || !tsdata->raw_buffer) {
652 error = edt_ft5x06_register_write(tsdata, 0x08, 0x01);
654 dev_dbg(&client->dev,
655 "failed to write 0x08 register, error %d\n", error);
660 msleep(EDT_RAW_DATA_DELAY);
661 val = edt_ft5x06_register_read(tsdata, 0x08);
664 } while (--retries > 0);
668 dev_dbg(&client->dev,
669 "failed to read 0x08 register, error %d\n", error);
674 dev_dbg(&client->dev,
675 "timed out waiting for register to settle\n");
680 rdbuf = tsdata->raw_buffer;
681 colbytes = tsdata->num_y * sizeof(u16);
685 for (i = 0; i < tsdata->num_x; i++) {
686 wrbuf[2] = i; /* column index */
687 error = edt_ft5x06_ts_readwrite(tsdata->client,
688 sizeof(wrbuf), wrbuf,
696 read = min_t(size_t, count, tsdata->raw_bufsize - *off);
697 if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) {
704 mutex_unlock(&tsdata->mutex);
705 return error ?: read;
708 static const struct file_operations debugfs_raw_data_fops = {
710 .read = edt_ft5x06_debugfs_raw_data_read,
714 edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
715 const char *debugfs_name)
717 tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL);
718 if (!tsdata->debug_dir)
721 debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x);
722 debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y);
724 debugfs_create_file("mode", S_IRUSR | S_IWUSR,
725 tsdata->debug_dir, tsdata, &debugfs_mode_fops);
726 debugfs_create_file("raw_data", S_IRUSR,
727 tsdata->debug_dir, tsdata, &debugfs_raw_data_fops);
731 edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
733 debugfs_remove_recursive(tsdata->debug_dir);
734 kfree(tsdata->raw_buffer);
740 edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata,
741 const char *debugfs_name)
746 edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata)
750 #endif /* CONFIG_DEBUGFS */
752 static int edt_ft5x06_ts_identify(struct i2c_client *client,
753 struct edt_ft5x06_ts_data *tsdata,
756 u8 rdbuf[EDT_NAME_LEN];
759 char *model_name = tsdata->name;
761 /* see what we find if we assume it is a M06 *
762 * if we get less than EDT_NAME_LEN, we don't want
763 * to have garbage in there
765 memset(rdbuf, 0, sizeof(rdbuf));
766 error = edt_ft5x06_ts_readwrite(client, 1, "\xbb",
767 EDT_NAME_LEN - 1, rdbuf);
771 /* if we find something consistent, stay with that assumption
772 * at least M09 won't send 3 bytes here
774 if (!(strncasecmp(rdbuf + 1, "EP0", 3))) {
775 tsdata->version = M06;
777 /* remove last '$' end marker */
778 rdbuf[EDT_NAME_LEN - 1] = '\0';
779 if (rdbuf[EDT_NAME_LEN - 2] == '$')
780 rdbuf[EDT_NAME_LEN - 2] = '\0';
782 /* look for Model/Version separator */
783 p = strchr(rdbuf, '*');
786 strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN);
787 strlcpy(fw_version, p ? p : "", EDT_NAME_LEN);
789 /* since there are only two versions around (M06, M09) */
790 tsdata->version = M09;
792 error = edt_ft5x06_ts_readwrite(client, 1, "\xA6",
797 strlcpy(fw_version, rdbuf, 2);
799 error = edt_ft5x06_ts_readwrite(client, 1, "\xA8",
804 snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09",
805 rdbuf[0] >> 4, rdbuf[0] & 0x0F);
811 static void edt_ft5x06_ts_get_defaults(struct device *dev,
812 struct edt_ft5x06_ts_data *tsdata)
814 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
818 error = device_property_read_u32(dev, "threshold", &val);
820 reg_addr->reg_threshold = val;
822 error = device_property_read_u32(dev, "gain", &val);
824 reg_addr->reg_gain = val;
826 error = device_property_read_u32(dev, "offset", &val);
828 reg_addr->reg_offset = val;
832 edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata)
834 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
836 tsdata->threshold = edt_ft5x06_register_read(tsdata,
837 reg_addr->reg_threshold);
838 tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain);
839 tsdata->offset = edt_ft5x06_register_read(tsdata, reg_addr->reg_offset);
840 if (reg_addr->reg_report_rate != NO_REGISTER)
841 tsdata->report_rate = edt_ft5x06_register_read(tsdata,
842 reg_addr->reg_report_rate);
843 tsdata->num_x = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_x);
844 tsdata->num_y = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_y);
848 edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
850 struct edt_reg_addr *reg_addr = &tsdata->reg_addr;
852 switch (tsdata->version) {
854 reg_addr->reg_threshold = WORK_REGISTER_THRESHOLD;
855 reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE;
856 reg_addr->reg_gain = WORK_REGISTER_GAIN;
857 reg_addr->reg_offset = WORK_REGISTER_OFFSET;
858 reg_addr->reg_num_x = WORK_REGISTER_NUM_X;
859 reg_addr->reg_num_y = WORK_REGISTER_NUM_Y;
863 reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
864 reg_addr->reg_gain = M09_REGISTER_GAIN;
865 reg_addr->reg_offset = M09_REGISTER_OFFSET;
866 reg_addr->reg_num_x = M09_REGISTER_NUM_X;
867 reg_addr->reg_num_y = M09_REGISTER_NUM_Y;
872 static int edt_ft5x06_ts_probe(struct i2c_client *client,
873 const struct i2c_device_id *id)
875 struct edt_ft5x06_ts_data *tsdata;
876 struct input_dev *input;
878 char fw_version[EDT_NAME_LEN];
880 dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n");
882 tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL);
884 dev_err(&client->dev, "failed to allocate driver data.\n");
888 tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
889 "reset", GPIOD_OUT_HIGH);
890 if (IS_ERR(tsdata->reset_gpio)) {
891 error = PTR_ERR(tsdata->reset_gpio);
892 dev_err(&client->dev,
893 "Failed to request GPIO reset pin, error %d\n", error);
897 tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev,
898 "wake", GPIOD_OUT_LOW);
899 if (IS_ERR(tsdata->wake_gpio)) {
900 error = PTR_ERR(tsdata->wake_gpio);
901 dev_err(&client->dev,
902 "Failed to request GPIO wake pin, error %d\n", error);
906 if (tsdata->wake_gpio) {
907 usleep_range(5000, 6000);
908 gpiod_set_value_cansleep(tsdata->wake_gpio, 1);
911 if (tsdata->reset_gpio) {
912 usleep_range(5000, 6000);
913 gpiod_set_value_cansleep(tsdata->reset_gpio, 0);
917 input = devm_input_allocate_device(&client->dev);
919 dev_err(&client->dev, "failed to allocate input device.\n");
923 mutex_init(&tsdata->mutex);
924 tsdata->client = client;
925 tsdata->input = input;
926 tsdata->factory_mode = false;
928 error = edt_ft5x06_ts_identify(client, tsdata, fw_version);
930 dev_err(&client->dev, "touchscreen probe failed\n");
934 edt_ft5x06_ts_set_regs(tsdata);
935 edt_ft5x06_ts_get_defaults(&client->dev, tsdata);
936 edt_ft5x06_ts_get_parameters(tsdata);
938 dev_dbg(&client->dev,
939 "Model \"%s\", Rev. \"%s\", %dx%d sensors\n",
940 tsdata->name, fw_version, tsdata->num_x, tsdata->num_y);
942 input->name = tsdata->name;
943 input->id.bustype = BUS_I2C;
944 input->dev.parent = &client->dev;
946 input_set_abs_params(input, ABS_MT_POSITION_X,
947 0, tsdata->num_x * 64 - 1, 0, 0);
948 input_set_abs_params(input, ABS_MT_POSITION_Y,
949 0, tsdata->num_y * 64 - 1, 0, 0);
951 touchscreen_parse_properties(input, true);
953 error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, INPUT_MT_DIRECT);
955 dev_err(&client->dev, "Unable to init MT slots.\n");
959 input_set_drvdata(input, tsdata);
960 i2c_set_clientdata(client, tsdata);
962 error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
964 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
965 client->name, tsdata);
967 dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
971 error = sysfs_create_group(&client->dev.kobj, &edt_ft5x06_attr_group);
975 error = input_register_device(input);
977 goto err_remove_attrs;
979 edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev));
980 device_init_wakeup(&client->dev, 1);
982 dev_dbg(&client->dev,
983 "EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n",
984 client->irq, desc_to_gpio(tsdata->wake_gpio),
985 desc_to_gpio(tsdata->reset_gpio));
990 sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group);
994 static int edt_ft5x06_ts_remove(struct i2c_client *client)
996 struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
998 edt_ft5x06_ts_teardown_debugfs(tsdata);
999 sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group);
1004 static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev)
1006 struct i2c_client *client = to_i2c_client(dev);
1008 if (device_may_wakeup(dev))
1009 enable_irq_wake(client->irq);
1014 static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev)
1016 struct i2c_client *client = to_i2c_client(dev);
1018 if (device_may_wakeup(dev))
1019 disable_irq_wake(client->irq);
1024 static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops,
1025 edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume);
1027 static const struct i2c_device_id edt_ft5x06_ts_id[] = {
1028 { "edt-ft5x06", 0, },
1031 MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id);
1034 static const struct of_device_id edt_ft5x06_of_match[] = {
1035 { .compatible = "edt,edt-ft5206", },
1036 { .compatible = "edt,edt-ft5306", },
1037 { .compatible = "edt,edt-ft5406", },
1040 MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match);
1043 static struct i2c_driver edt_ft5x06_ts_driver = {
1045 .name = "edt_ft5x06",
1046 .of_match_table = of_match_ptr(edt_ft5x06_of_match),
1047 .pm = &edt_ft5x06_ts_pm_ops,
1049 .id_table = edt_ft5x06_ts_id,
1050 .probe = edt_ft5x06_ts_probe,
1051 .remove = edt_ft5x06_ts_remove,
1054 module_i2c_driver(edt_ft5x06_ts_driver);
1056 MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>");
1057 MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver");
1058 MODULE_LICENSE("GPL");