2 * Copyright (C) 2012-2017 Hideep, Inc.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2
6 * as published by the Free Software Foudation.
9 #include <linux/module.h>
11 #include <linux/firmware.h>
12 #include <linux/delay.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/i2c.h>
15 #include <linux/acpi.h>
16 #include <linux/interrupt.h>
17 #include <linux/regmap.h>
18 #include <linux/sysfs.h>
19 #include <linux/input.h>
20 #include <linux/input/mt.h>
21 #include <linux/input/touchscreen.h>
22 #include <linux/regulator/consumer.h>
23 #include <asm/unaligned.h>
25 #define HIDEEP_TS_NAME "HiDeep Touchscreen"
26 #define HIDEEP_I2C_NAME "hideep_ts"
28 #define HIDEEP_MT_MAX 10
29 #define HIDEEP_KEY_MAX 3
31 /* count(2) + touch data(100) + key data(6) */
32 #define HIDEEP_MAX_EVENT 108UL
34 #define HIDEEP_TOUCH_EVENT_INDEX 2
35 #define HIDEEP_KEY_EVENT_INDEX 102
37 /* Touch & key event */
38 #define HIDEEP_EVENT_ADDR 0x240
41 #define HIDEEP_RESET_CMD 0x9800
44 #define HIDEEP_MT_RELEASED BIT(4)
45 #define HIDEEP_KEY_PRESSED BIT(7)
46 #define HIDEEP_KEY_FIRST_PRESSED BIT(8)
47 #define HIDEEP_KEY_PRESSED_MASK (HIDEEP_KEY_PRESSED | \
48 HIDEEP_KEY_FIRST_PRESSED)
50 #define HIDEEP_KEY_IDX_MASK 0x0f
53 #define HIDEEP_YRAM_BASE 0x40000000
54 #define HIDEEP_PERIPHERAL_BASE 0x50000000
55 #define HIDEEP_ESI_BASE (HIDEEP_PERIPHERAL_BASE + 0x00000000)
56 #define HIDEEP_FLASH_BASE (HIDEEP_PERIPHERAL_BASE + 0x01000000)
57 #define HIDEEP_SYSCON_BASE (HIDEEP_PERIPHERAL_BASE + 0x02000000)
59 #define HIDEEP_SYSCON_MOD_CON (HIDEEP_SYSCON_BASE + 0x0000)
60 #define HIDEEP_SYSCON_SPC_CON (HIDEEP_SYSCON_BASE + 0x0004)
61 #define HIDEEP_SYSCON_CLK_CON (HIDEEP_SYSCON_BASE + 0x0008)
62 #define HIDEEP_SYSCON_CLK_ENA (HIDEEP_SYSCON_BASE + 0x000C)
63 #define HIDEEP_SYSCON_RST_CON (HIDEEP_SYSCON_BASE + 0x0010)
64 #define HIDEEP_SYSCON_WDT_CON (HIDEEP_SYSCON_BASE + 0x0014)
65 #define HIDEEP_SYSCON_WDT_CNT (HIDEEP_SYSCON_BASE + 0x0018)
66 #define HIDEEP_SYSCON_PWR_CON (HIDEEP_SYSCON_BASE + 0x0020)
67 #define HIDEEP_SYSCON_PGM_ID (HIDEEP_SYSCON_BASE + 0x00F4)
69 #define HIDEEP_FLASH_CON (HIDEEP_FLASH_BASE + 0x0000)
70 #define HIDEEP_FLASH_STA (HIDEEP_FLASH_BASE + 0x0004)
71 #define HIDEEP_FLASH_CFG (HIDEEP_FLASH_BASE + 0x0008)
72 #define HIDEEP_FLASH_TIM (HIDEEP_FLASH_BASE + 0x000C)
73 #define HIDEEP_FLASH_CACHE_CFG (HIDEEP_FLASH_BASE + 0x0010)
74 #define HIDEEP_FLASH_PIO_SIG (HIDEEP_FLASH_BASE + 0x400000)
76 #define HIDEEP_ESI_TX_INVALID (HIDEEP_ESI_BASE + 0x0008)
78 #define HIDEEP_PERASE 0x00040000
79 #define HIDEEP_WRONLY 0x00100000
81 #define HIDEEP_NVM_MASK_OFS 0x0000000C
82 #define HIDEEP_NVM_DEFAULT_PAGE 0
83 #define HIDEEP_NVM_SFR_WPAGE 1
84 #define HIDEEP_NVM_SFR_RPAGE 2
86 #define HIDEEP_PIO_SIG 0x00400000
87 #define HIDEEP_PROT_MODE 0x03400000
89 #define HIDEEP_NVM_PAGE_SIZE 128
91 #define HIDEEP_DWZ_INFO 0x000002C0
142 __be32 payload[HIDEEP_NVM_PAGE_SIZE / sizeof(__be32)];
145 #define HIDEEP_XFER_BUF_SIZE sizeof(struct pgm_packet)
148 struct i2c_client *client;
149 struct input_dev *input_dev;
152 struct touchscreen_properties prop;
154 struct gpio_desc *reset_gpio;
156 struct regulator *vcc_vdd;
157 struct regulator *vcc_vid;
159 struct mutex dev_mutex;
165 * Data buffer to read packet from the device (contacts and key
166 * states). We align it on double-word boundary to keep word-sized
167 * fields in contact data and double-word-sized fields in program
170 u8 xfer_buf[HIDEEP_XFER_BUF_SIZE] __aligned(4);
173 u32 key_codes[HIDEEP_KEY_MAX];
175 struct dwz_info dwz_info;
177 unsigned int fw_size;
181 static int hideep_pgm_w_mem(struct hideep_ts *ts, u32 addr,
182 const __be32 *data, size_t count)
184 struct pgm_packet *packet = (void *)ts->xfer_buf;
185 size_t len = count * sizeof(*data);
186 struct i2c_msg msg = {
187 .addr = ts->client->addr,
188 .len = len + sizeof(packet->header.len) +
189 sizeof(packet->header.addr),
190 .buf = &packet->header.len,
194 if (len > HIDEEP_NVM_PAGE_SIZE)
197 packet->header.len = 0x80 | (count - 1);
198 packet->header.addr = cpu_to_be32(addr);
199 memcpy(packet->payload, data, len);
201 ret = i2c_transfer(ts->client->adapter, &msg, 1);
203 return ret < 0 ? ret : -EIO;
208 static int hideep_pgm_r_mem(struct hideep_ts *ts, u32 addr,
209 __be32 *data, size_t count)
211 struct pgm_packet *packet = (void *)ts->xfer_buf;
212 size_t len = count * sizeof(*data);
213 struct i2c_msg msg[] = {
215 .addr = ts->client->addr,
216 .len = sizeof(packet->header.len) +
217 sizeof(packet->header.addr),
218 .buf = &packet->header.len,
221 .addr = ts->client->addr,
229 if (len > HIDEEP_NVM_PAGE_SIZE)
232 packet->header.len = count - 1;
233 packet->header.addr = cpu_to_be32(addr);
235 ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
236 if (ret != ARRAY_SIZE(msg))
237 return ret < 0 ? ret : -EIO;
242 static int hideep_pgm_r_reg(struct hideep_ts *ts, u32 addr, u32 *val)
247 error = hideep_pgm_r_mem(ts, addr, &data, 1);
249 dev_err(&ts->client->dev,
250 "read of register %#08x failed: %d\n",
255 *val = be32_to_cpu(data);
259 static int hideep_pgm_w_reg(struct hideep_ts *ts, u32 addr, u32 val)
261 __be32 data = cpu_to_be32(val);
264 error = hideep_pgm_w_mem(ts, addr, &data, 1);
266 dev_err(&ts->client->dev,
267 "write to register %#08x (%#08x) failed: %d\n",
275 #define SW_RESET_IN_PGM(clk) \
277 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CNT, (clk)); \
278 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x03); \
279 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x01); \
282 #define SET_FLASH_PIO(ce) \
283 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CON, \
286 #define SET_PIO_SIG(x, y) \
287 hideep_pgm_w_reg(ts, HIDEEP_FLASH_PIO_SIG + (x), (y))
289 #define SET_FLASH_HWCONTROL() \
290 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CON, 0x00)
292 #define NVM_W_SFR(x, y) \
299 static void hideep_pgm_set(struct hideep_ts *ts)
301 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x00);
302 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_SPC_CON, 0x00);
303 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_CLK_ENA, 0xFF);
304 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_CLK_CON, 0x01);
305 hideep_pgm_w_reg(ts, HIDEEP_SYSCON_PWR_CON, 0x01);
306 hideep_pgm_w_reg(ts, HIDEEP_FLASH_TIM, 0x03);
307 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CACHE_CFG, 0x00);
310 static int hideep_pgm_get_pattern(struct hideep_ts *ts, u32 *pattern)
316 error = regmap_bulk_write(ts->reg, p1, &p2, 1);
318 dev_err(&ts->client->dev,
319 "%s: regmap_bulk_write() failed with %d\n",
324 usleep_range(1000, 1100);
326 /* flush invalid Tx load register */
327 error = hideep_pgm_w_reg(ts, HIDEEP_ESI_TX_INVALID, 0x01);
331 error = hideep_pgm_r_reg(ts, HIDEEP_SYSCON_PGM_ID, pattern);
338 static int hideep_enter_pgm(struct hideep_ts *ts)
340 int retry_count = 10;
344 while (retry_count--) {
345 error = hideep_pgm_get_pattern(ts, &pattern);
347 dev_err(&ts->client->dev,
348 "hideep_pgm_get_pattern failed: %d\n", error);
349 } else if (pattern != 0x39AF9DDF) {
350 dev_err(&ts->client->dev, "%s: bad pattern: %#08x\n",
353 dev_dbg(&ts->client->dev, "found magic code");
356 usleep_range(1000, 1100);
362 dev_err(&ts->client->dev, "failed to enter pgm mode\n");
363 SW_RESET_IN_PGM(1000);
367 static int hideep_nvm_unlock(struct hideep_ts *ts)
372 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_SFR_RPAGE);
373 error = hideep_pgm_r_reg(ts, 0x0000000C, &unmask_code);
374 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_DEFAULT_PAGE);
378 /* make it unprotected code */
379 unmask_code &= ~HIDEEP_PROT_MODE;
381 /* compare unmask code */
382 if (unmask_code != ts->nvm_mask)
383 dev_warn(&ts->client->dev,
384 "read mask code different %#08x vs %#08x",
385 unmask_code, ts->nvm_mask);
387 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_SFR_WPAGE);
390 NVM_W_SFR(HIDEEP_NVM_MASK_OFS, ts->nvm_mask);
391 SET_FLASH_HWCONTROL();
392 hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_DEFAULT_PAGE);
397 static int hideep_check_status(struct hideep_ts *ts)
404 error = hideep_pgm_r_reg(ts, HIDEEP_FLASH_STA, &status);
405 if (!error && status)
408 usleep_range(1000, 1100);
414 static int hideep_program_page(struct hideep_ts *ts, u32 addr,
415 const __be32 *ucode, size_t xfer_count)
420 error = hideep_check_status(ts);
424 addr &= ~(HIDEEP_NVM_PAGE_SIZE - 1);
430 SET_PIO_SIG(HIDEEP_PERASE | addr, 0xFFFFFFFF);
434 error = hideep_check_status(ts);
441 val = be32_to_cpu(ucode[0]);
442 SET_PIO_SIG(HIDEEP_WRONLY | addr, val);
444 hideep_pgm_w_mem(ts, HIDEEP_FLASH_PIO_SIG | HIDEEP_WRONLY,
447 val = be32_to_cpu(ucode[xfer_count - 1]);
448 SET_PIO_SIG(124, val);
452 usleep_range(1000, 1100);
454 error = hideep_check_status(ts);
458 SET_FLASH_HWCONTROL();
463 static int hideep_program_nvm(struct hideep_ts *ts,
464 const __be32 *ucode, size_t ucode_len)
466 struct pgm_packet *packet_r = (void *)ts->xfer_buf;
467 __be32 *current_ucode = packet_r->payload;
473 error = hideep_nvm_unlock(ts);
477 while (ucode_len > 0) {
478 xfer_len = min_t(size_t, ucode_len, HIDEEP_NVM_PAGE_SIZE);
479 xfer_count = xfer_len / sizeof(*ucode);
481 error = hideep_pgm_r_mem(ts, 0x00000000 + addr,
482 current_ucode, xfer_count);
484 dev_err(&ts->client->dev,
485 "%s: failed to read page at offset %#08x: %d\n",
486 __func__, addr, error);
490 /* See if the page needs updating */
491 if (memcmp(ucode, current_ucode, xfer_len)) {
492 error = hideep_program_page(ts, addr,
495 dev_err(&ts->client->dev,
496 "%s: iwrite failure @%#08x: %d\n",
497 __func__, addr, error);
501 usleep_range(1000, 1100);
506 ucode_len -= xfer_len;
512 static int hideep_verify_nvm(struct hideep_ts *ts,
513 const __be32 *ucode, size_t ucode_len)
515 struct pgm_packet *packet_r = (void *)ts->xfer_buf;
516 __be32 *current_ucode = packet_r->payload;
523 while (ucode_len > 0) {
524 xfer_len = min_t(size_t, ucode_len, HIDEEP_NVM_PAGE_SIZE);
525 xfer_count = xfer_len / sizeof(*ucode);
527 error = hideep_pgm_r_mem(ts, 0x00000000 + addr,
528 current_ucode, xfer_count);
530 dev_err(&ts->client->dev,
531 "%s: failed to read page at offset %#08x: %d\n",
532 __func__, addr, error);
536 if (memcmp(ucode, current_ucode, xfer_len)) {
537 const u8 *ucode_bytes = (const u8 *)ucode;
538 const u8 *current_bytes = (const u8 *)current_ucode;
540 for (i = 0; i < xfer_len; i++)
541 if (ucode_bytes[i] != current_bytes[i])
542 dev_err(&ts->client->dev,
543 "%s: mismatch @%#08x: (%#02x vs %#02x)\n",
553 ucode_len -= xfer_len;
559 static int hideep_load_dwz(struct hideep_ts *ts)
564 error = hideep_enter_pgm(ts);
570 error = hideep_pgm_r_mem(ts, HIDEEP_DWZ_INFO,
571 (void *)&ts->dwz_info,
572 sizeof(ts->dwz_info) / sizeof(__be32));
578 dev_err(&ts->client->dev,
579 "failed to fetch DWZ data: %d\n", error);
583 product_code = be16_to_cpu(ts->dwz_info.product_code);
585 switch (product_code & 0xF0) {
587 dev_dbg(&ts->client->dev, "used crimson IC");
588 ts->fw_size = 1024 * 48;
589 ts->nvm_mask = 0x00310000;
592 dev_dbg(&ts->client->dev, "used lime IC");
593 ts->fw_size = 1024 * 64;
594 ts->nvm_mask = 0x0030027B;
597 dev_err(&ts->client->dev, "product code is wrong: %#04x",
602 dev_dbg(&ts->client->dev, "firmware release version: %#04x",
603 be16_to_cpu(ts->dwz_info.release_ver));
608 static int hideep_flash_firmware(struct hideep_ts *ts,
609 const __be32 *ucode, size_t ucode_len)
614 while (retry_cnt--) {
615 error = hideep_program_nvm(ts, ucode, ucode_len);
617 error = hideep_verify_nvm(ts, ucode, ucode_len);
626 static int hideep_update_firmware(struct hideep_ts *ts,
627 const __be32 *ucode, size_t ucode_len)
631 dev_dbg(&ts->client->dev, "starting firmware update");
633 /* enter program mode */
634 error = hideep_enter_pgm(ts);
638 error = hideep_flash_firmware(ts, ucode, ucode_len);
640 dev_err(&ts->client->dev,
641 "firmware update failed: %d\n", error);
643 dev_dbg(&ts->client->dev, "firmware updated successfully\n");
645 SW_RESET_IN_PGM(1000);
647 error2 = hideep_load_dwz(ts);
649 dev_err(&ts->client->dev,
650 "failed to load dwz after firmware update: %d\n",
653 return error ?: error2;
656 static int hideep_power_on(struct hideep_ts *ts)
660 error = regulator_enable(ts->vcc_vdd);
662 dev_err(&ts->client->dev,
663 "failed to enable 'vdd' regulator: %d", error);
665 usleep_range(999, 1000);
667 error = regulator_enable(ts->vcc_vid);
669 dev_err(&ts->client->dev,
670 "failed to enable 'vcc_vid' regulator: %d",
675 if (ts->reset_gpio) {
676 gpiod_set_value_cansleep(ts->reset_gpio, 0);
678 error = regmap_write(ts->reg, HIDEEP_RESET_CMD, 0x01);
680 dev_err(&ts->client->dev,
681 "failed to send 'reset' command: %d\n", error);
689 static void hideep_power_off(void *data)
691 struct hideep_ts *ts = data;
694 gpiod_set_value(ts->reset_gpio, 1);
696 regulator_disable(ts->vcc_vid);
697 regulator_disable(ts->vcc_vdd);
700 #define __GET_MT_TOOL_TYPE(type) ((type) == 0x01 ? MT_TOOL_FINGER : MT_TOOL_PEN)
702 static void hideep_report_slot(struct input_dev *input,
703 const struct hideep_event *event)
705 input_mt_slot(input, event->index & 0x0f);
706 input_mt_report_slot_state(input,
707 __GET_MT_TOOL_TYPE(event->type),
708 !(event->flag & HIDEEP_MT_RELEASED));
709 if (!(event->flag & HIDEEP_MT_RELEASED)) {
710 input_report_abs(input, ABS_MT_POSITION_X,
711 le16_to_cpup(&event->x));
712 input_report_abs(input, ABS_MT_POSITION_Y,
713 le16_to_cpup(&event->y));
714 input_report_abs(input, ABS_MT_PRESSURE,
715 le16_to_cpup(&event->z));
716 input_report_abs(input, ABS_MT_TOUCH_MAJOR, event->w);
720 static void hideep_parse_and_report(struct hideep_ts *ts)
722 const struct hideep_event *events =
723 (void *)&ts->xfer_buf[HIDEEP_TOUCH_EVENT_INDEX];
724 const u8 *keys = &ts->xfer_buf[HIDEEP_KEY_EVENT_INDEX];
725 int touch_count = ts->xfer_buf[0];
726 int key_count = ts->xfer_buf[1] & 0x0f;
727 int lpm_count = ts->xfer_buf[1] & 0xf0;
730 /* get touch event count */
731 dev_dbg(&ts->client->dev, "mt = %d, key = %d, lpm = %02x",
732 touch_count, key_count, lpm_count);
734 touch_count = min(touch_count, HIDEEP_MT_MAX);
735 for (i = 0; i < touch_count; i++)
736 hideep_report_slot(ts->input_dev, events + i);
738 key_count = min(key_count, HIDEEP_KEY_MAX);
739 for (i = 0; i < key_count; i++) {
740 u8 key_data = keys[i * 2];
742 input_report_key(ts->input_dev,
743 ts->key_codes[key_data & HIDEEP_KEY_IDX_MASK],
744 key_data & HIDEEP_KEY_PRESSED_MASK);
747 input_mt_sync_frame(ts->input_dev);
748 input_sync(ts->input_dev);
751 static irqreturn_t hideep_irq(int irq, void *handle)
753 struct hideep_ts *ts = handle;
756 BUILD_BUG_ON(HIDEEP_MAX_EVENT > HIDEEP_XFER_BUF_SIZE);
758 error = regmap_bulk_read(ts->reg, HIDEEP_EVENT_ADDR,
759 ts->xfer_buf, HIDEEP_MAX_EVENT / 2);
761 dev_err(&ts->client->dev, "failed to read events: %d\n", error);
765 hideep_parse_and_report(ts);
771 static int hideep_get_axis_info(struct hideep_ts *ts)
776 error = regmap_bulk_read(ts->reg, 0x28, val, ARRAY_SIZE(val));
780 ts->prop.max_x = le16_to_cpup(val);
781 ts->prop.max_y = le16_to_cpup(val + 1);
783 dev_dbg(&ts->client->dev, "X: %d, Y: %d",
784 ts->prop.max_x, ts->prop.max_y);
789 static int hideep_init_input(struct hideep_ts *ts)
791 struct device *dev = &ts->client->dev;
795 ts->input_dev = devm_input_allocate_device(dev);
796 if (!ts->input_dev) {
797 dev_err(dev, "failed to allocate input device\n");
801 ts->input_dev->name = HIDEEP_TS_NAME;
802 ts->input_dev->id.bustype = BUS_I2C;
803 input_set_drvdata(ts->input_dev, ts);
805 input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);
806 input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);
807 input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE, 0, 65535, 0, 0);
808 input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
809 input_set_abs_params(ts->input_dev, ABS_MT_TOOL_TYPE,
810 0, MT_TOOL_MAX, 0, 0);
811 touchscreen_parse_properties(ts->input_dev, true, &ts->prop);
813 if (ts->prop.max_x == 0 || ts->prop.max_y == 0) {
814 error = hideep_get_axis_info(ts);
819 error = input_mt_init_slots(ts->input_dev, HIDEEP_MT_MAX,
824 ts->key_num = device_property_read_u32_array(dev, "linux,keycodes",
826 if (ts->key_num > HIDEEP_KEY_MAX) {
827 dev_err(dev, "too many keys defined: %d\n",
832 if (ts->key_num <= 0) {
834 "missing or malformed 'linux,keycodes' property\n");
836 error = device_property_read_u32_array(dev, "linux,keycodes",
840 dev_dbg(dev, "failed to read keymap: %d", error);
845 ts->input_dev->keycode = ts->key_codes;
846 ts->input_dev->keycodesize = sizeof(ts->key_codes[0]);
847 ts->input_dev->keycodemax = ts->key_num;
849 for (i = 0; i < ts->key_num; i++)
850 input_set_capability(ts->input_dev, EV_KEY,
855 error = input_register_device(ts->input_dev);
857 dev_err(dev, "failed to register input device: %d", error);
864 static ssize_t hideep_update_fw(struct device *dev,
865 struct device_attribute *attr,
866 const char *buf, size_t count)
868 struct i2c_client *client = to_i2c_client(dev);
869 struct hideep_ts *ts = i2c_get_clientdata(client);
870 const struct firmware *fw_entry;
875 error = kstrtoint(buf, 0, &mode);
879 fw_name = kasprintf(GFP_KERNEL, "/*(DEBLOBBED)*/",
880 be16_to_cpu(ts->dwz_info.product_id));
884 error = reject_firmware(&fw_entry, fw_name, dev);
886 dev_err(dev, "failed to request firmware %s: %d",
888 goto out_free_fw_name;
891 if (fw_entry->size % sizeof(__be32)) {
892 dev_err(dev, "invalid firmware size %zu\n", fw_entry->size);
897 if (fw_entry->size > ts->fw_size) {
898 dev_err(dev, "fw size (%zu) is too big (memory size %d)\n",
899 fw_entry->size, ts->fw_size);
904 mutex_lock(&ts->dev_mutex);
905 disable_irq(client->irq);
907 error = hideep_update_firmware(ts, (const __be32 *)fw_entry->data,
910 enable_irq(client->irq);
911 mutex_unlock(&ts->dev_mutex);
914 release_firmware(fw_entry);
918 return error ?: count;
921 static ssize_t hideep_fw_version_show(struct device *dev,
922 struct device_attribute *attr, char *buf)
924 struct i2c_client *client = to_i2c_client(dev);
925 struct hideep_ts *ts = i2c_get_clientdata(client);
928 mutex_lock(&ts->dev_mutex);
929 len = scnprintf(buf, PAGE_SIZE, "%04x\n",
930 be16_to_cpu(ts->dwz_info.release_ver));
931 mutex_unlock(&ts->dev_mutex);
936 static ssize_t hideep_product_id_show(struct device *dev,
937 struct device_attribute *attr, char *buf)
939 struct i2c_client *client = to_i2c_client(dev);
940 struct hideep_ts *ts = i2c_get_clientdata(client);
943 mutex_lock(&ts->dev_mutex);
944 len = scnprintf(buf, PAGE_SIZE, "%04x\n",
945 be16_to_cpu(ts->dwz_info.product_id));
946 mutex_unlock(&ts->dev_mutex);
951 static DEVICE_ATTR(version, 0664, hideep_fw_version_show, NULL);
952 static DEVICE_ATTR(product_id, 0664, hideep_product_id_show, NULL);
953 static DEVICE_ATTR(update_fw, 0664, NULL, hideep_update_fw);
955 static struct attribute *hideep_ts_sysfs_entries[] = {
956 &dev_attr_version.attr,
957 &dev_attr_product_id.attr,
958 &dev_attr_update_fw.attr,
962 static const struct attribute_group hideep_ts_attr_group = {
963 .attrs = hideep_ts_sysfs_entries,
966 static int __maybe_unused hideep_suspend(struct device *dev)
968 struct i2c_client *client = to_i2c_client(dev);
969 struct hideep_ts *ts = i2c_get_clientdata(client);
971 disable_irq(client->irq);
972 hideep_power_off(ts);
977 static int __maybe_unused hideep_resume(struct device *dev)
979 struct i2c_client *client = to_i2c_client(dev);
980 struct hideep_ts *ts = i2c_get_clientdata(client);
983 error = hideep_power_on(ts);
985 dev_err(&client->dev, "power on failed");
989 enable_irq(client->irq);
994 static SIMPLE_DEV_PM_OPS(hideep_pm_ops, hideep_suspend, hideep_resume);
996 static const struct regmap_config hideep_regmap_config = {
998 .reg_format_endian = REGMAP_ENDIAN_LITTLE,
1000 .val_format_endian = REGMAP_ENDIAN_LITTLE,
1001 .max_register = 0xffff,
1004 static int hideep_probe(struct i2c_client *client,
1005 const struct i2c_device_id *id)
1007 struct hideep_ts *ts;
1011 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
1012 dev_err(&client->dev, "check i2c device error");
1016 if (client->irq <= 0) {
1017 dev_err(&client->dev, "missing irq: %d\n", client->irq);
1021 ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
1025 ts->client = client;
1026 i2c_set_clientdata(client, ts);
1027 mutex_init(&ts->dev_mutex);
1029 ts->reg = devm_regmap_init_i2c(client, &hideep_regmap_config);
1030 if (IS_ERR(ts->reg)) {
1031 error = PTR_ERR(ts->reg);
1032 dev_err(&client->dev,
1033 "failed to initialize regmap: %d\n", error);
1037 ts->vcc_vdd = devm_regulator_get(&client->dev, "vdd");
1038 if (IS_ERR(ts->vcc_vdd))
1039 return PTR_ERR(ts->vcc_vdd);
1041 ts->vcc_vid = devm_regulator_get(&client->dev, "vid");
1042 if (IS_ERR(ts->vcc_vid))
1043 return PTR_ERR(ts->vcc_vid);
1045 ts->reset_gpio = devm_gpiod_get_optional(&client->dev,
1046 "reset", GPIOD_OUT_HIGH);
1047 if (IS_ERR(ts->reset_gpio))
1048 return PTR_ERR(ts->reset_gpio);
1050 error = hideep_power_on(ts);
1052 dev_err(&client->dev, "power on failed: %d\n", error);
1056 error = devm_add_action_or_reset(&client->dev, hideep_power_off, ts);
1060 error = hideep_load_dwz(ts);
1062 dev_err(&client->dev, "failed to load dwz: %d", error);
1066 error = hideep_init_input(ts);
1070 error = devm_request_threaded_irq(&client->dev, client->irq,
1071 NULL, hideep_irq, IRQF_ONESHOT,
1074 dev_err(&client->dev, "failed to request irq %d: %d\n",
1075 client->irq, error);
1079 error = devm_device_add_group(&client->dev, &hideep_ts_attr_group);
1081 dev_err(&client->dev,
1082 "failed to add sysfs attributes: %d\n", error);
1089 static const struct i2c_device_id hideep_i2c_id[] = {
1090 { HIDEEP_I2C_NAME, 0 },
1093 MODULE_DEVICE_TABLE(i2c, hideep_i2c_id);
1096 static const struct acpi_device_id hideep_acpi_id[] = {
1100 MODULE_DEVICE_TABLE(acpi, hideep_acpi_id);
1104 static const struct of_device_id hideep_match_table[] = {
1105 { .compatible = "hideep,hideep-ts" },
1108 MODULE_DEVICE_TABLE(of, hideep_match_table);
1111 static struct i2c_driver hideep_driver = {
1113 .name = HIDEEP_I2C_NAME,
1114 .of_match_table = of_match_ptr(hideep_match_table),
1115 .acpi_match_table = ACPI_PTR(hideep_acpi_id),
1116 .pm = &hideep_pm_ops,
1118 .id_table = hideep_i2c_id,
1119 .probe = hideep_probe,
1122 module_i2c_driver(hideep_driver);
1124 MODULE_DESCRIPTION("Driver for HiDeep Touchscreen Controller");
1125 MODULE_AUTHOR("anthony.kim@hideep.com");
1126 MODULE_LICENSE("GPL v2");