1 // SPDX-License-Identifier: GPL-2.0-only
4 * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
5 * For use with Cypress Txx4xx parts.
6 * Supported parts include:
10 * Copyright (C) 2012 Cypress Semiconductor
12 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
15 #include "cyttsp4_core.h"
16 #include <linux/delay.h>
17 #include <linux/gpio.h>
18 #include <linux/input/mt.h>
19 #include <linux/interrupt.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/sched.h>
22 #include <linux/slab.h>
25 #define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT 500
26 #define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT 5000
27 #define CY_CORE_MODE_CHANGE_TIMEOUT 1000
28 #define CY_CORE_RESET_AND_WAIT_TIMEOUT 500
29 #define CY_CORE_WAKEUP_TIMEOUT 500
31 #define CY_CORE_STARTUP_RETRY_COUNT 3
33 static const char * const cyttsp4_tch_abs_string[] = {
44 [CY_TCH_NUM_ABS] = "INVALID"
47 static const u8 ldr_exit[] = {
48 0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
51 static const u8 ldr_err_app[] = {
52 0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17
55 static inline size_t merge_bytes(u8 high, u8 low)
57 return (high << 8) + low;
61 static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size,
62 const char *data_name)
65 const char fmt[] = "%02X ";
71 max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED);
74 for (i = k = 0; i < size && k < max; i++, k += 3)
75 scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]);
77 dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1,
78 pr_buf, size <= max ? "" : CY_PR_TRUNCATED);
81 #define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0)
84 static int cyttsp4_load_status_regs(struct cyttsp4 *cd)
86 struct cyttsp4_sysinfo *si = &cd->sysinfo;
87 struct device *dev = cd->dev;
90 rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size,
93 dev_err(dev, "%s: fail read mode regs r=%d\n",
96 cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode,
97 si->si_ofs.mode_size, "xy_mode");
102 static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode)
104 u8 cmd = mode ^ CY_HST_TOGGLE;
108 * Mode change issued, handshaking now will cause endless mode change
109 * requests, for sync mode modechange will do same with handshake
111 if (mode & CY_HST_MODE_CHANGE)
114 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
116 dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n",
122 static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd)
124 u8 cmd = CY_HST_RESET;
125 int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
127 dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n",
134 static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd)
136 if (cd->cpdata->xres) {
137 cd->cpdata->xres(cd->cpdata, cd->dev);
138 dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__);
141 dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__);
145 static int cyttsp4_hw_reset(struct cyttsp4 *cd)
147 int rc = cyttsp4_hw_hard_reset(cd);
149 rc = cyttsp4_hw_soft_reset(cd);
154 * Gets number of bits for a touch filed as parameter,
155 * sets maximum value for field which is used as bit mask
156 * and returns number of bytes required for that field
158 static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max)
161 return (nbits + 7) / 8;
164 static int cyttsp4_si_data_offsets(struct cyttsp4 *cd)
166 struct cyttsp4_sysinfo *si = &cd->sysinfo;
167 int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data),
170 dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n",
175 /* Print sysinfo data offsets */
176 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data,
177 sizeof(si->si_data), "sysinfo_data_offsets");
179 /* convert sysinfo data offset bytes into integers */
181 si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
182 si->si_data.map_szl);
183 si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
184 si->si_data.map_szl);
185 si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh,
186 si->si_data.cydata_ofsl);
187 si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh,
188 si->si_data.test_ofsl);
189 si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh,
190 si->si_data.pcfg_ofsl);
191 si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh,
192 si->si_data.opcfg_ofsl);
193 si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh,
194 si->si_data.ddata_ofsl);
195 si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh,
196 si->si_data.mdata_ofsl);
200 static int cyttsp4_si_get_cydata(struct cyttsp4 *cd)
202 struct cyttsp4_sysinfo *si = &cd->sysinfo;
204 int mfgid_sz, calc_mfgid_sz;
208 if (si->si_ofs.test_ofs <= si->si_ofs.cydata_ofs) {
210 "%s: invalid offset test_ofs: %zu, cydata_ofs: %zu\n",
211 __func__, si->si_ofs.test_ofs, si->si_ofs.cydata_ofs);
215 si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs;
216 dev_dbg(cd->dev, "%s: cydata size: %zd\n", __func__,
217 si->si_ofs.cydata_size);
219 p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL);
221 dev_err(cd->dev, "%s: failed to allocate cydata memory\n",
225 si->si_ptrs.cydata = p;
227 read_offset = si->si_ofs.cydata_ofs;
229 /* Read the CYDA registers up to MFGID field */
230 rc = cyttsp4_adap_read(cd, read_offset,
231 offsetof(struct cyttsp4_cydata, mfgid_sz)
232 + sizeof(si->si_ptrs.cydata->mfgid_sz),
235 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
240 /* Check MFGID size */
241 mfgid_sz = si->si_ptrs.cydata->mfgid_sz;
242 calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata);
243 if (mfgid_sz != calc_mfgid_sz) {
244 dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n",
245 __func__, mfgid_sz, calc_mfgid_sz);
249 read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz)
250 + sizeof(si->si_ptrs.cydata->mfgid_sz);
252 /* Read the CYDA registers for MFGID field */
253 rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz,
254 si->si_ptrs.cydata->mfg_id);
256 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
261 read_offset += si->si_ptrs.cydata->mfgid_sz;
263 /* Read the rest of the CYDA registers */
264 rc = cyttsp4_adap_read(cd, read_offset,
265 sizeof(struct cyttsp4_cydata)
266 - offsetof(struct cyttsp4_cydata, cyito_idh),
267 &si->si_ptrs.cydata->cyito_idh);
269 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
274 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata,
275 si->si_ofs.cydata_size, "sysinfo_cydata");
279 static int cyttsp4_si_get_test_data(struct cyttsp4 *cd)
281 struct cyttsp4_sysinfo *si = &cd->sysinfo;
285 if (si->si_ofs.pcfg_ofs <= si->si_ofs.test_ofs) {
287 "%s: invalid offset pcfg_ofs: %zu, test_ofs: %zu\n",
288 __func__, si->si_ofs.pcfg_ofs, si->si_ofs.test_ofs);
292 si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs;
294 p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL);
296 dev_err(cd->dev, "%s: failed to allocate test memory\n",
300 si->si_ptrs.test = p;
302 rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size,
305 dev_err(cd->dev, "%s: fail read test data r=%d\n",
310 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
311 (u8 *)si->si_ptrs.test, si->si_ofs.test_size,
312 "sysinfo_test_data");
313 if (si->si_ptrs.test->post_codel &
314 CY_POST_CODEL_WDG_RST)
315 dev_info(cd->dev, "%s: %s codel=%02X\n",
316 __func__, "Reset was a WATCHDOG RESET",
317 si->si_ptrs.test->post_codel);
319 if (!(si->si_ptrs.test->post_codel &
320 CY_POST_CODEL_CFG_DATA_CRC_FAIL))
321 dev_info(cd->dev, "%s: %s codel=%02X\n", __func__,
322 "Config Data CRC FAIL",
323 si->si_ptrs.test->post_codel);
325 if (!(si->si_ptrs.test->post_codel &
326 CY_POST_CODEL_PANEL_TEST_FAIL))
327 dev_info(cd->dev, "%s: %s codel=%02X\n",
328 __func__, "PANEL TEST FAIL",
329 si->si_ptrs.test->post_codel);
331 dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n",
332 __func__, si->si_ptrs.test->post_codel & 0x08 ?
333 "ENABLED" : "DISABLED",
334 si->si_ptrs.test->post_codel);
338 static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd)
340 struct cyttsp4_sysinfo *si = &cd->sysinfo;
344 if (si->si_ofs.opcfg_ofs <= si->si_ofs.pcfg_ofs) {
346 "%s: invalid offset opcfg_ofs: %zu, pcfg_ofs: %zu\n",
347 __func__, si->si_ofs.opcfg_ofs, si->si_ofs.pcfg_ofs);
351 si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs;
353 p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL);
355 dev_err(cd->dev, "%s: failed to allocate pcfg memory\n",
359 si->si_ptrs.pcfg = p;
361 rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size,
364 dev_err(cd->dev, "%s: fail read pcfg data r=%d\n",
369 si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh
370 & CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl);
371 si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh
372 & CY_PCFG_ORIGIN_X_MASK);
373 si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh
374 & CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl);
375 si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh
376 & CY_PCFG_ORIGIN_Y_MASK);
377 si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh,
378 si->si_ptrs.pcfg->max_zl);
380 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
381 (u8 *)si->si_ptrs.pcfg,
382 si->si_ofs.pcfg_size, "sysinfo_pcfg_data");
386 static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd)
388 struct cyttsp4_sysinfo *si = &cd->sysinfo;
389 struct cyttsp4_tch_abs_params *tch;
390 struct cyttsp4_tch_rec_params *tch_old, *tch_new;
391 enum cyttsp4_tch_abs abs;
396 if (si->si_ofs.ddata_ofs <= si->si_ofs.opcfg_ofs) {
398 "%s: invalid offset ddata_ofs: %zu, opcfg_ofs: %zu\n",
399 __func__, si->si_ofs.ddata_ofs, si->si_ofs.opcfg_ofs);
403 si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs;
405 p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL);
407 dev_err(cd->dev, "%s: failed to allocate opcfg memory\n",
411 si->si_ptrs.opcfg = p;
413 rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size,
416 dev_err(cd->dev, "%s: fail read opcfg data r=%d\n",
420 si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs;
421 si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs;
422 si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) +
423 si->si_ptrs.opcfg->rep_szl;
424 si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns;
425 si->si_ofs.num_btn_regs = (si->si_ofs.num_btns +
426 CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG;
427 si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs;
428 si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0;
429 si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs &
431 si->si_ofs.tch_rec_size = si->si_ptrs.opcfg->tch_rec_size &
434 /* Get the old touch fields */
435 for (abs = CY_TCH_X; abs < CY_NUM_TCH_FIELDS; abs++) {
436 tch = &si->si_ofs.tch_abs[abs];
437 tch_old = &si->si_ptrs.opcfg->tch_rec_old[abs];
439 tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK;
440 tch->size = cyttsp4_bits_2_bytes(tch_old->size,
442 tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
446 si->si_ofs.btn_rec_size = si->si_ptrs.opcfg->btn_rec_size;
447 si->si_ofs.btn_diff_ofs = si->si_ptrs.opcfg->btn_diff_ofs;
448 si->si_ofs.btn_diff_size = si->si_ptrs.opcfg->btn_diff_size;
450 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
451 /* Get the extended touch fields */
452 for (i = 0; i < CY_NUM_EXT_TCH_FIELDS; abs++, i++) {
453 tch = &si->si_ofs.tch_abs[abs];
454 tch_new = &si->si_ptrs.opcfg->tch_rec_new[i];
456 tch->ofs = tch_new->loc & CY_BYTE_OFS_MASK;
457 tch->size = cyttsp4_bits_2_bytes(tch_new->size,
459 tch->bofs = (tch_new->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
463 for (abs = 0; abs < CY_TCH_NUM_ABS; abs++) {
464 dev_dbg(cd->dev, "%s: tch_rec_%s\n", __func__,
465 cyttsp4_tch_abs_string[abs]);
466 dev_dbg(cd->dev, "%s: ofs =%2zd\n", __func__,
467 si->si_ofs.tch_abs[abs].ofs);
468 dev_dbg(cd->dev, "%s: siz =%2zd\n", __func__,
469 si->si_ofs.tch_abs[abs].size);
470 dev_dbg(cd->dev, "%s: max =%2zd\n", __func__,
471 si->si_ofs.tch_abs[abs].max);
472 dev_dbg(cd->dev, "%s: bofs=%2zd\n", __func__,
473 si->si_ofs.tch_abs[abs].bofs);
476 si->si_ofs.mode_size = si->si_ofs.tt_stat_ofs + 1;
477 si->si_ofs.data_size = si->si_ofs.max_tchs *
478 si->si_ptrs.opcfg->tch_rec_size;
480 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.opcfg,
481 si->si_ofs.opcfg_size, "sysinfo_opcfg_data");
486 static int cyttsp4_si_get_ddata(struct cyttsp4 *cd)
488 struct cyttsp4_sysinfo *si = &cd->sysinfo;
492 si->si_ofs.ddata_size = si->si_ofs.mdata_ofs - si->si_ofs.ddata_ofs;
494 p = krealloc(si->si_ptrs.ddata, si->si_ofs.ddata_size, GFP_KERNEL);
496 dev_err(cd->dev, "%s: fail alloc ddata memory\n", __func__);
499 si->si_ptrs.ddata = p;
501 rc = cyttsp4_adap_read(cd, si->si_ofs.ddata_ofs, si->si_ofs.ddata_size,
504 dev_err(cd->dev, "%s: fail read ddata data r=%d\n",
507 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
508 (u8 *)si->si_ptrs.ddata,
509 si->si_ofs.ddata_size, "sysinfo_ddata");
513 static int cyttsp4_si_get_mdata(struct cyttsp4 *cd)
515 struct cyttsp4_sysinfo *si = &cd->sysinfo;
519 si->si_ofs.mdata_size = si->si_ofs.map_sz - si->si_ofs.mdata_ofs;
521 p = krealloc(si->si_ptrs.mdata, si->si_ofs.mdata_size, GFP_KERNEL);
523 dev_err(cd->dev, "%s: fail alloc mdata memory\n", __func__);
526 si->si_ptrs.mdata = p;
528 rc = cyttsp4_adap_read(cd, si->si_ofs.mdata_ofs, si->si_ofs.mdata_size,
531 dev_err(cd->dev, "%s: fail read mdata data r=%d\n",
534 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
535 (u8 *)si->si_ptrs.mdata,
536 si->si_ofs.mdata_size, "sysinfo_mdata");
540 static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd)
542 struct cyttsp4_sysinfo *si = &cd->sysinfo;
544 int num_defined_keys;
549 if (si->si_ofs.num_btns) {
550 si->si_ofs.btn_keys_size = si->si_ofs.num_btns *
551 sizeof(struct cyttsp4_btn);
553 p = krealloc(si->btn, si->si_ofs.btn_keys_size,
554 GFP_KERNEL|__GFP_ZERO);
556 dev_err(cd->dev, "%s: %s\n", __func__,
557 "fail alloc btn_keys memory");
562 if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS] == NULL)
563 num_defined_keys = 0;
564 else if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS]->data == NULL)
565 num_defined_keys = 0;
567 num_defined_keys = cd->cpdata->sett
568 [CY_IC_GRPNUM_BTN_KEYS]->size;
570 for (btn = 0; btn < si->si_ofs.num_btns &&
571 btn < num_defined_keys; btn++) {
572 key_table = (u16 *)cd->cpdata->sett
573 [CY_IC_GRPNUM_BTN_KEYS]->data;
574 si->btn[btn].key_code = key_table[btn];
575 si->btn[btn].state = CY_BTN_RELEASED;
576 si->btn[btn].enabled = true;
578 for (; btn < si->si_ofs.num_btns; btn++) {
579 si->btn[btn].key_code = KEY_RESERVED;
580 si->btn[btn].state = CY_BTN_RELEASED;
581 si->btn[btn].enabled = true;
587 si->si_ofs.btn_keys_size = 0;
593 static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd)
595 struct cyttsp4_sysinfo *si = &cd->sysinfo;
598 p = krealloc(si->xy_mode, si->si_ofs.mode_size, GFP_KERNEL|__GFP_ZERO);
603 p = krealloc(si->xy_data, si->si_ofs.data_size, GFP_KERNEL|__GFP_ZERO);
608 p = krealloc(si->btn_rec_data,
609 si->si_ofs.btn_rec_size * si->si_ofs.num_btns,
610 GFP_KERNEL|__GFP_ZERO);
613 si->btn_rec_data = p;
618 static void cyttsp4_si_put_log_data(struct cyttsp4 *cd)
620 struct cyttsp4_sysinfo *si = &cd->sysinfo;
621 dev_dbg(cd->dev, "%s: cydata_ofs =%4zd siz=%4zd\n", __func__,
622 si->si_ofs.cydata_ofs, si->si_ofs.cydata_size);
623 dev_dbg(cd->dev, "%s: test_ofs =%4zd siz=%4zd\n", __func__,
624 si->si_ofs.test_ofs, si->si_ofs.test_size);
625 dev_dbg(cd->dev, "%s: pcfg_ofs =%4zd siz=%4zd\n", __func__,
626 si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size);
627 dev_dbg(cd->dev, "%s: opcfg_ofs =%4zd siz=%4zd\n", __func__,
628 si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size);
629 dev_dbg(cd->dev, "%s: ddata_ofs =%4zd siz=%4zd\n", __func__,
630 si->si_ofs.ddata_ofs, si->si_ofs.ddata_size);
631 dev_dbg(cd->dev, "%s: mdata_ofs =%4zd siz=%4zd\n", __func__,
632 si->si_ofs.mdata_ofs, si->si_ofs.mdata_size);
634 dev_dbg(cd->dev, "%s: cmd_ofs =%4zd\n", __func__,
636 dev_dbg(cd->dev, "%s: rep_ofs =%4zd\n", __func__,
638 dev_dbg(cd->dev, "%s: rep_sz =%4zd\n", __func__,
640 dev_dbg(cd->dev, "%s: num_btns =%4zd\n", __func__,
641 si->si_ofs.num_btns);
642 dev_dbg(cd->dev, "%s: num_btn_regs =%4zd\n", __func__,
643 si->si_ofs.num_btn_regs);
644 dev_dbg(cd->dev, "%s: tt_stat_ofs =%4zd\n", __func__,
645 si->si_ofs.tt_stat_ofs);
646 dev_dbg(cd->dev, "%s: tch_rec_size =%4zd\n", __func__,
647 si->si_ofs.tch_rec_size);
648 dev_dbg(cd->dev, "%s: max_tchs =%4zd\n", __func__,
649 si->si_ofs.max_tchs);
650 dev_dbg(cd->dev, "%s: mode_size =%4zd\n", __func__,
651 si->si_ofs.mode_size);
652 dev_dbg(cd->dev, "%s: data_size =%4zd\n", __func__,
653 si->si_ofs.data_size);
654 dev_dbg(cd->dev, "%s: map_sz =%4zd\n", __func__,
657 dev_dbg(cd->dev, "%s: btn_rec_size =%2zd\n", __func__,
658 si->si_ofs.btn_rec_size);
659 dev_dbg(cd->dev, "%s: btn_diff_ofs =%2zd\n", __func__,
660 si->si_ofs.btn_diff_ofs);
661 dev_dbg(cd->dev, "%s: btn_diff_size =%2zd\n", __func__,
662 si->si_ofs.btn_diff_size);
664 dev_dbg(cd->dev, "%s: max_x = 0x%04zX (%zd)\n", __func__,
665 si->si_ofs.max_x, si->si_ofs.max_x);
666 dev_dbg(cd->dev, "%s: x_origin = %zd (%s)\n", __func__,
668 si->si_ofs.x_origin == CY_NORMAL_ORIGIN ?
669 "left corner" : "right corner");
670 dev_dbg(cd->dev, "%s: max_y = 0x%04zX (%zd)\n", __func__,
671 si->si_ofs.max_y, si->si_ofs.max_y);
672 dev_dbg(cd->dev, "%s: y_origin = %zd (%s)\n", __func__,
674 si->si_ofs.y_origin == CY_NORMAL_ORIGIN ?
675 "upper corner" : "lower corner");
676 dev_dbg(cd->dev, "%s: max_p = 0x%04zX (%zd)\n", __func__,
677 si->si_ofs.max_p, si->si_ofs.max_p);
679 dev_dbg(cd->dev, "%s: xy_mode=%p xy_data=%p\n", __func__,
680 si->xy_mode, si->xy_data);
683 static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd)
685 struct cyttsp4_sysinfo *si = &cd->sysinfo;
688 rc = cyttsp4_si_data_offsets(cd);
692 rc = cyttsp4_si_get_cydata(cd);
696 rc = cyttsp4_si_get_test_data(cd);
700 rc = cyttsp4_si_get_pcfg_data(cd);
704 rc = cyttsp4_si_get_opcfg_data(cd);
708 rc = cyttsp4_si_get_ddata(cd);
712 rc = cyttsp4_si_get_mdata(cd);
716 rc = cyttsp4_si_get_btn_data(cd);
720 rc = cyttsp4_si_get_op_data_ptrs(cd);
722 dev_err(cd->dev, "%s: failed to get_op_data\n",
727 cyttsp4_si_put_log_data(cd);
729 /* provide flow control handshake */
730 rc = cyttsp4_handshake(cd, si->si_data.hst_mode);
732 dev_err(cd->dev, "%s: handshake fail on sysinfo reg\n",
739 static void cyttsp4_queue_startup_(struct cyttsp4 *cd)
741 if (cd->startup_state == STARTUP_NONE) {
742 cd->startup_state = STARTUP_QUEUED;
743 schedule_work(&cd->startup_work);
744 dev_dbg(cd->dev, "%s: cyttsp4_startup queued\n", __func__);
746 dev_dbg(cd->dev, "%s: startup_state = %d\n", __func__,
751 static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md,
756 if (md->num_prv_tch == 0)
759 for (t = 0; t < max_slots; t++) {
760 input_mt_slot(md->input, t);
761 input_mt_report_slot_inactive(md->input);
765 static void cyttsp4_lift_all(struct cyttsp4_mt_data *md)
770 if (md->num_prv_tch != 0) {
771 cyttsp4_report_slot_liftoff(md,
772 md->si->si_ofs.tch_abs[CY_TCH_T].max);
773 input_sync(md->input);
778 static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md,
779 int *axis, int size, int max, u8 *xy_data, int bofs)
784 for (nbyte = 0, *axis = 0, next = 0; nbyte < size; nbyte++) {
785 dev_vdbg(&md->input->dev,
786 "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
787 " xy_data[%d]=%02X(%d) bofs=%d\n",
788 __func__, *axis, *axis, size, max, xy_data, next,
789 xy_data[next], xy_data[next], bofs);
790 *axis = (*axis * 256) + (xy_data[next] >> bofs);
796 dev_vdbg(&md->input->dev,
797 "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
798 " xy_data[%d]=%02X(%d)\n",
799 __func__, *axis, *axis, size, max, xy_data, next,
800 xy_data[next], xy_data[next]);
803 static void cyttsp4_get_touch(struct cyttsp4_mt_data *md,
804 struct cyttsp4_touch *touch, u8 *xy_data)
806 struct device *dev = &md->input->dev;
807 struct cyttsp4_sysinfo *si = md->si;
808 enum cyttsp4_tch_abs abs;
811 for (abs = CY_TCH_X; abs < CY_TCH_NUM_ABS; abs++) {
812 cyttsp4_get_touch_axis(md, &touch->abs[abs],
813 si->si_ofs.tch_abs[abs].size,
814 si->si_ofs.tch_abs[abs].max,
815 xy_data + si->si_ofs.tch_abs[abs].ofs,
816 si->si_ofs.tch_abs[abs].bofs);
817 dev_vdbg(dev, "%s: get %s=%04X(%d)\n", __func__,
818 cyttsp4_tch_abs_string[abs],
819 touch->abs[abs], touch->abs[abs]);
822 if (md->pdata->flags & CY_FLAG_FLIP) {
823 swap(touch->abs[CY_TCH_X], touch->abs[CY_TCH_Y]);
828 if (md->pdata->flags & CY_FLAG_INV_X) {
830 touch->abs[CY_TCH_X] = md->si->si_ofs.max_y -
831 touch->abs[CY_TCH_X];
833 touch->abs[CY_TCH_X] = md->si->si_ofs.max_x -
834 touch->abs[CY_TCH_X];
836 if (md->pdata->flags & CY_FLAG_INV_Y) {
838 touch->abs[CY_TCH_Y] = md->si->si_ofs.max_x -
839 touch->abs[CY_TCH_Y];
841 touch->abs[CY_TCH_Y] = md->si->si_ofs.max_y -
842 touch->abs[CY_TCH_Y];
845 dev_vdbg(dev, "%s: flip=%s inv-x=%s inv-y=%s x=%04X(%d) y=%04X(%d)\n",
846 __func__, flipped ? "true" : "false",
847 md->pdata->flags & CY_FLAG_INV_X ? "true" : "false",
848 md->pdata->flags & CY_FLAG_INV_Y ? "true" : "false",
849 touch->abs[CY_TCH_X], touch->abs[CY_TCH_X],
850 touch->abs[CY_TCH_Y], touch->abs[CY_TCH_Y]);
853 static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids)
857 for (t = 0; t < max_slots; t++) {
860 input_mt_slot(input, t);
861 input_mt_report_slot_inactive(input);
867 static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
869 struct device *dev = &md->input->dev;
870 struct cyttsp4_sysinfo *si = md->si;
871 struct cyttsp4_touch tch;
874 int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
876 memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
877 for (i = 0; i < num_cur_tch; i++) {
878 cyttsp4_get_touch(md, &tch, si->xy_data +
879 (i * si->si_ofs.tch_rec_size));
880 if ((tch.abs[CY_TCH_T] < md->pdata->frmwrk->abs
881 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST]) ||
882 (tch.abs[CY_TCH_T] > md->pdata->frmwrk->abs
883 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MAX_OST])) {
884 dev_err(dev, "%s: tch=%d -> bad trk_id=%d max_id=%d\n",
885 __func__, i, tch.abs[CY_TCH_T],
886 md->pdata->frmwrk->abs[(CY_ABS_ID_OST *
887 CY_NUM_ABS_SET) + CY_MAX_OST]);
891 /* use 0 based track id's */
892 sig = md->pdata->frmwrk->abs
893 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + 0];
894 if (sig != CY_IGNORE_VALUE) {
895 t = tch.abs[CY_TCH_T] - md->pdata->frmwrk->abs
896 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST];
897 if (tch.abs[CY_TCH_E] == CY_EV_LIFTOFF) {
898 dev_dbg(dev, "%s: t=%d e=%d lift-off\n",
899 __func__, t, tch.abs[CY_TCH_E]);
900 goto cyttsp4_get_mt_touches_pr_tch;
902 input_mt_slot(md->input, t);
903 input_mt_report_slot_state(md->input, MT_TOOL_FINGER,
908 /* all devices: position and pressure fields */
909 for (j = 0; j <= CY_ABS_W_OST; j++) {
910 sig = md->pdata->frmwrk->abs[((CY_ABS_X_OST + j) *
911 CY_NUM_ABS_SET) + 0];
912 if (sig != CY_IGNORE_VALUE)
913 input_report_abs(md->input, sig,
914 tch.abs[CY_TCH_X + j]);
916 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
918 * TMA400 size and orientation fields:
919 * if pressure is non-zero and major touch
920 * signal is zero, then set major and minor touch
921 * signals to minimum non-zero value
923 if (tch.abs[CY_TCH_P] > 0 && tch.abs[CY_TCH_MAJ] == 0)
924 tch.abs[CY_TCH_MAJ] = tch.abs[CY_TCH_MIN] = 1;
926 /* Get the extended touch fields */
927 for (j = 0; j < CY_NUM_EXT_TCH_FIELDS; j++) {
928 sig = md->pdata->frmwrk->abs
929 [((CY_ABS_MAJ_OST + j) *
930 CY_NUM_ABS_SET) + 0];
931 if (sig != CY_IGNORE_VALUE)
932 input_report_abs(md->input, sig,
933 tch.abs[CY_TCH_MAJ + j]);
937 cyttsp4_get_mt_touches_pr_tch:
938 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE)
940 "%s: t=%d x=%d y=%d z=%d M=%d m=%d o=%d e=%d\n",
951 "%s: t=%d x=%d y=%d z=%d e=%d\n", __func__,
959 cyttsp4_final_sync(md->input, si->si_ofs.tch_abs[CY_TCH_T].max, ids);
961 md->num_prv_tch = num_cur_tch;
966 /* read xy_data for all current touches */
967 static int cyttsp4_xy_worker(struct cyttsp4 *cd)
969 struct cyttsp4_mt_data *md = &cd->md;
970 struct device *dev = &md->input->dev;
971 struct cyttsp4_sysinfo *si = md->si;
980 * Get event data from cyttsp4 device.
981 * The event data includes all data
982 * for all active touches.
983 * Event data also includes button data
987 * 1st read to get mode + button bytes + touch count (core)
988 * 2nd read (optional) to get touch 1 - touch n data
990 hst_mode = si->xy_mode[CY_REG_BASE];
991 rep_len = si->xy_mode[si->si_ofs.rep_ofs];
992 rep_stat = si->xy_mode[si->si_ofs.rep_ofs + 1];
993 tt_stat = si->xy_mode[si->si_ofs.tt_stat_ofs];
994 dev_vdbg(dev, "%s: %s%02X %s%d %s%02X %s%02X\n", __func__,
995 "hst_mode=", hst_mode, "rep_len=", rep_len,
996 "rep_stat=", rep_stat, "tt_stat=", tt_stat);
998 num_cur_tch = GET_NUM_TOUCHES(tt_stat);
999 dev_vdbg(dev, "%s: num_cur_tch=%d\n", __func__, num_cur_tch);
1001 if (rep_len == 0 && num_cur_tch > 0) {
1002 dev_err(dev, "%s: report length error rep_len=%d num_tch=%d\n",
1003 __func__, rep_len, num_cur_tch);
1004 goto cyttsp4_xy_worker_exit;
1008 if (num_cur_tch > 0) {
1009 rc = cyttsp4_adap_read(cd, si->si_ofs.tt_stat_ofs + 1,
1010 num_cur_tch * si->si_ofs.tch_rec_size,
1013 dev_err(dev, "%s: read fail on touch regs r=%d\n",
1015 goto cyttsp4_xy_worker_exit;
1020 cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_data, num_cur_tch *
1021 si->si_ofs.tch_rec_size, "xy_data");
1023 /* check any error conditions */
1024 if (IS_BAD_PKT(rep_stat)) {
1025 dev_dbg(dev, "%s: Invalid buffer detected\n", __func__);
1027 goto cyttsp4_xy_worker_exit;
1030 if (IS_LARGE_AREA(tt_stat))
1031 dev_dbg(dev, "%s: Large area detected\n", __func__);
1033 if (num_cur_tch > si->si_ofs.max_tchs) {
1034 dev_err(dev, "%s: too many tch; set to max tch (n=%d c=%zd)\n",
1035 __func__, num_cur_tch, si->si_ofs.max_tchs);
1036 num_cur_tch = si->si_ofs.max_tchs;
1039 /* extract xy_data for all currently reported touches */
1040 dev_vdbg(dev, "%s: extract data num_cur_tch=%d\n", __func__,
1043 cyttsp4_get_mt_touches(md, num_cur_tch);
1045 cyttsp4_lift_all(md);
1049 cyttsp4_xy_worker_exit:
1053 static int cyttsp4_mt_attention(struct cyttsp4 *cd)
1055 struct device *dev = cd->dev;
1056 struct cyttsp4_mt_data *md = &cd->md;
1062 mutex_lock(&md->report_lock);
1063 if (!md->is_suspended) {
1064 /* core handles handshake */
1065 rc = cyttsp4_xy_worker(cd);
1067 dev_vdbg(dev, "%s: Ignoring report while suspended\n",
1070 mutex_unlock(&md->report_lock);
1072 dev_err(dev, "%s: xy_worker error r=%d\n", __func__, rc);
1077 static irqreturn_t cyttsp4_irq(int irq, void *handle)
1079 struct cyttsp4 *cd = handle;
1080 struct device *dev = cd->dev;
1081 enum cyttsp4_mode cur_mode;
1082 u8 cmd_ofs = cd->sysinfo.si_ofs.cmd_ofs;
1087 * Check whether this IRQ should be ignored (external)
1088 * This should be the very first thing to check since
1089 * ignore_irq may be set for a very short period of time
1091 if (atomic_read(&cd->ignore_irq)) {
1092 dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
1096 dev_dbg(dev, "%s int:0x%x\n", __func__, cd->int_status);
1098 mutex_lock(&cd->system_lock);
1101 if (cd->sleep_state == SS_SLEEP_ON || cd->sleep_state == SS_SLEEPING)
1102 dev_vdbg(dev, "%s: Received IRQ while in sleep\n", __func__);
1104 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), mode);
1106 dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
1107 goto cyttsp4_irq_exit;
1109 dev_vdbg(dev, "%s mode[0-2]:0x%X 0x%X 0x%X\n", __func__,
1110 mode[0], mode[1], mode[2]);
1112 if (IS_BOOTLOADER(mode[0], mode[1])) {
1113 cur_mode = CY_MODE_BOOTLOADER;
1114 dev_vdbg(dev, "%s: bl running\n", __func__);
1115 if (cd->mode == CY_MODE_BOOTLOADER) {
1116 /* Signal bootloader heartbeat heard */
1117 wake_up(&cd->wait_q);
1118 goto cyttsp4_irq_exit;
1121 /* switch to bootloader */
1122 dev_dbg(dev, "%s: restart switch to bl m=%d -> m=%d\n",
1123 __func__, cd->mode, cur_mode);
1125 /* catch operation->bl glitch */
1126 if (cd->mode != CY_MODE_UNKNOWN) {
1127 /* Incase startup_state do not let startup_() */
1128 cd->mode = CY_MODE_UNKNOWN;
1129 cyttsp4_queue_startup_(cd);
1130 goto cyttsp4_irq_exit;
1134 * do not wake thread on this switch since
1135 * it is possible to get an early heartbeat
1136 * prior to performing the reset
1138 cd->mode = cur_mode;
1140 goto cyttsp4_irq_exit;
1143 switch (mode[0] & CY_HST_MODE) {
1144 case CY_HST_OPERATE:
1145 cur_mode = CY_MODE_OPERATIONAL;
1146 dev_vdbg(dev, "%s: operational\n", __func__);
1149 cur_mode = CY_MODE_CAT;
1150 dev_vdbg(dev, "%s: CaT\n", __func__);
1152 case CY_HST_SYSINFO:
1153 cur_mode = CY_MODE_SYSINFO;
1154 dev_vdbg(dev, "%s: sysinfo\n", __func__);
1157 cur_mode = CY_MODE_UNKNOWN;
1158 dev_err(dev, "%s: unknown HST mode 0x%02X\n", __func__,
1163 /* Check whether this IRQ should be ignored (internal) */
1164 if (cd->int_status & CY_INT_IGNORE) {
1165 dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
1166 goto cyttsp4_irq_exit;
1169 /* Check for wake up interrupt */
1170 if (cd->int_status & CY_INT_AWAKE) {
1171 cd->int_status &= ~CY_INT_AWAKE;
1172 wake_up(&cd->wait_q);
1173 dev_vdbg(dev, "%s: Received wake up interrupt\n", __func__);
1174 goto cyttsp4_irq_handshake;
1177 /* Expecting mode change interrupt */
1178 if ((cd->int_status & CY_INT_MODE_CHANGE)
1179 && (mode[0] & CY_HST_MODE_CHANGE) == 0) {
1180 cd->int_status &= ~CY_INT_MODE_CHANGE;
1181 dev_dbg(dev, "%s: finish mode switch m=%d -> m=%d\n",
1182 __func__, cd->mode, cur_mode);
1183 cd->mode = cur_mode;
1184 wake_up(&cd->wait_q);
1185 goto cyttsp4_irq_handshake;
1188 /* compare current core mode to current device mode */
1189 dev_vdbg(dev, "%s: cd->mode=%d cur_mode=%d\n",
1190 __func__, cd->mode, cur_mode);
1191 if ((mode[0] & CY_HST_MODE_CHANGE) == 0 && cd->mode != cur_mode) {
1192 /* Unexpected mode change occurred */
1193 dev_err(dev, "%s %d->%d 0x%x\n", __func__, cd->mode,
1194 cur_mode, cd->int_status);
1195 dev_dbg(dev, "%s: Unexpected mode change, startup\n",
1197 cyttsp4_queue_startup_(cd);
1198 goto cyttsp4_irq_exit;
1201 /* Expecting command complete interrupt */
1202 dev_vdbg(dev, "%s: command byte:0x%x\n", __func__, mode[cmd_ofs]);
1203 if ((cd->int_status & CY_INT_EXEC_CMD)
1204 && mode[cmd_ofs] & CY_CMD_COMPLETE) {
1205 cd->int_status &= ~CY_INT_EXEC_CMD;
1206 dev_vdbg(dev, "%s: Received command complete interrupt\n",
1208 wake_up(&cd->wait_q);
1210 * It is possible to receive a single interrupt for
1211 * command complete and touch/button status report.
1212 * Continue processing for a possible status report.
1216 /* This should be status report, read status regs */
1217 if (cd->mode == CY_MODE_OPERATIONAL) {
1218 dev_vdbg(dev, "%s: Read status registers\n", __func__);
1219 rc = cyttsp4_load_status_regs(cd);
1221 dev_err(dev, "%s: fail read mode regs r=%d\n",
1225 cyttsp4_mt_attention(cd);
1227 cyttsp4_irq_handshake:
1228 /* handshake the event */
1229 dev_vdbg(dev, "%s: Handshake mode=0x%02X r=%d\n",
1230 __func__, mode[0], rc);
1231 rc = cyttsp4_handshake(cd, mode[0]);
1233 dev_err(dev, "%s: Fail handshake mode=0x%02X r=%d\n",
1234 __func__, mode[0], rc);
1237 * a non-zero udelay period is required for using
1238 * IRQF_TRIGGER_LOW in order to delay until the
1239 * device completes isr deassert
1241 udelay(cd->cpdata->level_irq_udelay);
1244 mutex_unlock(&cd->system_lock);
1248 static void cyttsp4_start_wd_timer(struct cyttsp4 *cd)
1250 if (!CY_WATCHDOG_TIMEOUT)
1253 mod_timer(&cd->watchdog_timer, jiffies +
1254 msecs_to_jiffies(CY_WATCHDOG_TIMEOUT));
1257 static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
1259 if (!CY_WATCHDOG_TIMEOUT)
1263 * Ensure we wait until the watchdog timer
1264 * running on a different CPU finishes
1266 timer_shutdown_sync(&cd->watchdog_timer);
1267 cancel_work_sync(&cd->watchdog_work);
1270 static void cyttsp4_watchdog_timer(struct timer_list *t)
1272 struct cyttsp4 *cd = from_timer(cd, t, watchdog_timer);
1274 dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
1276 schedule_work(&cd->watchdog_work);
1281 static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr,
1284 int t = msecs_to_jiffies(timeout_ms);
1285 bool with_timeout = (timeout_ms != 0);
1287 mutex_lock(&cd->system_lock);
1288 if (!cd->exclusive_dev && cd->exclusive_waits == 0) {
1289 cd->exclusive_dev = ownptr;
1293 cd->exclusive_waits++;
1295 mutex_unlock(&cd->system_lock);
1297 t = wait_event_timeout(cd->wait_q, !cd->exclusive_dev, t);
1299 dev_err(cd->dev, "%s: tmo waiting exclusive access\n",
1301 mutex_lock(&cd->system_lock);
1302 cd->exclusive_waits--;
1303 mutex_unlock(&cd->system_lock);
1307 wait_event(cd->wait_q, !cd->exclusive_dev);
1309 mutex_lock(&cd->system_lock);
1310 if (cd->exclusive_dev)
1312 cd->exclusive_dev = ownptr;
1313 cd->exclusive_waits--;
1315 mutex_unlock(&cd->system_lock);
1321 * returns error if was not owned
1323 static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr)
1325 mutex_lock(&cd->system_lock);
1326 if (cd->exclusive_dev != ownptr) {
1327 mutex_unlock(&cd->system_lock);
1331 dev_vdbg(cd->dev, "%s: exclusive_dev %p freed\n",
1332 __func__, cd->exclusive_dev);
1333 cd->exclusive_dev = NULL;
1334 wake_up(&cd->wait_q);
1335 mutex_unlock(&cd->system_lock);
1339 static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd)
1344 /* wait heartbeat */
1345 dev_vdbg(cd->dev, "%s: wait heartbeat...\n", __func__);
1346 t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_BOOTLOADER,
1347 msecs_to_jiffies(CY_CORE_RESET_AND_WAIT_TIMEOUT));
1349 dev_err(cd->dev, "%s: tmo waiting bl heartbeat cd->mode=%d\n",
1350 __func__, cd->mode);
1357 static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd)
1361 dev_vdbg(cd->dev, "%s: wait sysinfo...\n", __func__);
1363 t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_SYSINFO,
1364 msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
1366 dev_err(cd->dev, "%s: tmo waiting exit bl cd->mode=%d\n",
1367 __func__, cd->mode);
1368 mutex_lock(&cd->system_lock);
1369 cd->int_status &= ~CY_INT_MODE_CHANGE;
1370 mutex_unlock(&cd->system_lock);
1377 static int cyttsp4_reset_and_wait(struct cyttsp4 *cd)
1381 /* reset hardware */
1382 mutex_lock(&cd->system_lock);
1383 dev_dbg(cd->dev, "%s: reset hw...\n", __func__);
1384 rc = cyttsp4_hw_reset(cd);
1385 cd->mode = CY_MODE_UNKNOWN;
1386 mutex_unlock(&cd->system_lock);
1388 dev_err(cd->dev, "%s:Fail hw reset r=%d\n", __func__, rc);
1392 return cyttsp4_wait_bl_heartbeat(cd);
1396 * returns err if refused or timeout; block until mode change complete
1397 * bit is set (mode change interrupt)
1399 static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode)
1407 case CY_MODE_OPERATIONAL:
1408 new_dev_mode = CY_HST_OPERATE;
1410 case CY_MODE_SYSINFO:
1411 new_dev_mode = CY_HST_SYSINFO;
1414 new_dev_mode = CY_HST_CAT;
1417 dev_err(cd->dev, "%s: invalid mode: %02X(%d)\n",
1418 __func__, new_mode, new_mode);
1423 dev_dbg(cd->dev, "%s: %s=%p new_dev_mode=%02X new_mode=%d\n",
1424 __func__, "have exclusive", cd->exclusive_dev,
1425 new_dev_mode, new_mode);
1427 mutex_lock(&cd->system_lock);
1428 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1430 mutex_unlock(&cd->system_lock);
1431 dev_err(cd->dev, "%s: Fail read mode r=%d\n",
1436 /* Clear device mode bits and set to new mode */
1437 mode &= ~CY_HST_MODE;
1438 mode |= new_dev_mode | CY_HST_MODE_CHANGE;
1440 cd->int_status |= CY_INT_MODE_CHANGE;
1441 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode), &mode);
1442 mutex_unlock(&cd->system_lock);
1444 dev_err(cd->dev, "%s: Fail write mode change r=%d\n",
1449 /* wait for mode change done interrupt */
1450 t = wait_event_timeout(cd->wait_q,
1451 (cd->int_status & CY_INT_MODE_CHANGE) == 0,
1452 msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
1453 dev_dbg(cd->dev, "%s: back from wait t=%ld cd->mode=%d\n",
1454 __func__, t, cd->mode);
1457 dev_err(cd->dev, "%s: %s\n", __func__,
1458 "tmo waiting mode change");
1459 mutex_lock(&cd->system_lock);
1460 cd->int_status &= ~CY_INT_MODE_CHANGE;
1461 mutex_unlock(&cd->system_lock);
1469 static void cyttsp4_watchdog_work(struct work_struct *work)
1471 struct cyttsp4 *cd =
1472 container_of(work, struct cyttsp4, watchdog_work);
1476 mutex_lock(&cd->system_lock);
1477 retval = cyttsp4_load_status_regs(cd);
1480 "%s: failed to access device in watchdog timer r=%d\n",
1482 cyttsp4_queue_startup_(cd);
1483 goto cyttsp4_timer_watchdog_exit_error;
1485 mode = &cd->sysinfo.xy_mode[CY_REG_BASE];
1486 if (IS_BOOTLOADER(mode[0], mode[1])) {
1488 "%s: device found in bootloader mode when operational mode\n",
1490 cyttsp4_queue_startup_(cd);
1491 goto cyttsp4_timer_watchdog_exit_error;
1494 cyttsp4_start_wd_timer(cd);
1495 cyttsp4_timer_watchdog_exit_error:
1496 mutex_unlock(&cd->system_lock);
1500 static int cyttsp4_core_sleep_(struct cyttsp4 *cd)
1502 enum cyttsp4_sleep_state ss = SS_SLEEP_ON;
1503 enum cyttsp4_int_state int_status = CY_INT_IGNORE;
1507 /* Already in sleep mode? */
1508 mutex_lock(&cd->system_lock);
1509 if (cd->sleep_state == SS_SLEEP_ON) {
1510 mutex_unlock(&cd->system_lock);
1513 cd->sleep_state = SS_SLEEPING;
1514 mutex_unlock(&cd->system_lock);
1516 cyttsp4_stop_wd_timer(cd);
1518 /* Wait until currently running IRQ handler exits and disable IRQ */
1519 disable_irq(cd->irq);
1521 dev_vdbg(cd->dev, "%s: write DEEP SLEEP...\n", __func__);
1522 mutex_lock(&cd->system_lock);
1523 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1525 mutex_unlock(&cd->system_lock);
1526 dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
1530 if (IS_BOOTLOADER(mode[0], mode[1])) {
1531 mutex_unlock(&cd->system_lock);
1532 dev_err(cd->dev, "%s: Device in BOOTLOADER mode.\n", __func__);
1537 mode[0] |= CY_HST_SLEEP;
1538 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode[0]), &mode[0]);
1539 mutex_unlock(&cd->system_lock);
1541 dev_err(cd->dev, "%s: Fail write adapter r=%d\n", __func__, rc);
1544 dev_vdbg(cd->dev, "%s: write DEEP SLEEP succeeded\n", __func__);
1546 if (cd->cpdata->power) {
1547 dev_dbg(cd->dev, "%s: Power down HW\n", __func__);
1548 rc = cd->cpdata->power(cd->cpdata, 0, cd->dev, &cd->ignore_irq);
1550 dev_dbg(cd->dev, "%s: No power function\n", __func__);
1554 dev_err(cd->dev, "%s: HW Power down fails r=%d\n",
1559 /* Give time to FW to sleep */
1566 int_status = CY_INT_NONE;
1567 cyttsp4_start_wd_timer(cd);
1570 mutex_lock(&cd->system_lock);
1571 cd->sleep_state = ss;
1572 cd->int_status |= int_status;
1573 mutex_unlock(&cd->system_lock);
1574 enable_irq(cd->irq);
1578 static int cyttsp4_startup_(struct cyttsp4 *cd)
1580 int retry = CY_CORE_STARTUP_RETRY_COUNT;
1583 cyttsp4_stop_wd_timer(cd);
1586 if (retry != CY_CORE_STARTUP_RETRY_COUNT)
1587 dev_dbg(cd->dev, "%s: Retry %d\n", __func__,
1588 CY_CORE_STARTUP_RETRY_COUNT - retry);
1590 /* reset hardware and wait for heartbeat */
1591 rc = cyttsp4_reset_and_wait(cd);
1593 dev_err(cd->dev, "%s: Error on h/w reset r=%d\n", __func__, rc);
1599 /* exit bl into sysinfo mode */
1600 dev_vdbg(cd->dev, "%s: write exit ldr...\n", __func__);
1601 mutex_lock(&cd->system_lock);
1602 cd->int_status &= ~CY_INT_IGNORE;
1603 cd->int_status |= CY_INT_MODE_CHANGE;
1605 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(ldr_exit),
1607 mutex_unlock(&cd->system_lock);
1609 dev_err(cd->dev, "%s: Fail write r=%d\n", __func__, rc);
1615 rc = cyttsp4_wait_sysinfo_mode(cd);
1617 u8 buf[sizeof(ldr_err_app)];
1620 /* Check for invalid/corrupted touch application */
1621 rc1 = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(ldr_err_app),
1624 dev_err(cd->dev, "%s: Fail read r=%d\n", __func__, rc1);
1625 } else if (!memcmp(buf, ldr_err_app, sizeof(ldr_err_app))) {
1626 dev_err(cd->dev, "%s: Error launching touch application\n",
1628 mutex_lock(&cd->system_lock);
1629 cd->invalid_touch_app = true;
1630 mutex_unlock(&cd->system_lock);
1639 mutex_lock(&cd->system_lock);
1640 cd->invalid_touch_app = false;
1641 mutex_unlock(&cd->system_lock);
1643 /* read sysinfo data */
1644 dev_vdbg(cd->dev, "%s: get sysinfo regs..\n", __func__);
1645 rc = cyttsp4_get_sysinfo_regs(cd);
1647 dev_err(cd->dev, "%s: failed to get sysinfo regs rc=%d\n",
1654 rc = cyttsp4_set_mode(cd, CY_MODE_OPERATIONAL);
1656 dev_err(cd->dev, "%s: failed to set mode to operational rc=%d\n",
1663 cyttsp4_lift_all(&cd->md);
1665 /* restore to sleep if was suspended */
1666 mutex_lock(&cd->system_lock);
1667 if (cd->sleep_state == SS_SLEEP_ON) {
1668 cd->sleep_state = SS_SLEEP_OFF;
1669 mutex_unlock(&cd->system_lock);
1670 cyttsp4_core_sleep_(cd);
1673 mutex_unlock(&cd->system_lock);
1676 cyttsp4_start_wd_timer(cd);
1681 static int cyttsp4_startup(struct cyttsp4 *cd)
1685 mutex_lock(&cd->system_lock);
1686 cd->startup_state = STARTUP_RUNNING;
1687 mutex_unlock(&cd->system_lock);
1689 rc = cyttsp4_request_exclusive(cd, cd->dev,
1690 CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
1692 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1693 __func__, cd->exclusive_dev, cd->dev);
1697 rc = cyttsp4_startup_(cd);
1699 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1700 /* Don't return fail code, mode is already changed. */
1701 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1703 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1706 mutex_lock(&cd->system_lock);
1707 cd->startup_state = STARTUP_NONE;
1708 mutex_unlock(&cd->system_lock);
1710 /* Wake the waiters for end of startup */
1711 wake_up(&cd->wait_q);
1716 static void cyttsp4_startup_work_function(struct work_struct *work)
1718 struct cyttsp4 *cd = container_of(work, struct cyttsp4, startup_work);
1721 rc = cyttsp4_startup(cd);
1723 dev_err(cd->dev, "%s: Fail queued startup r=%d\n",
1727 static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
1729 struct cyttsp4_sysinfo *si = &cd->sysinfo;
1734 kfree(si->si_ptrs.cydata);
1735 kfree(si->si_ptrs.test);
1736 kfree(si->si_ptrs.pcfg);
1737 kfree(si->si_ptrs.opcfg);
1738 kfree(si->si_ptrs.ddata);
1739 kfree(si->si_ptrs.mdata);
1743 kfree(si->btn_rec_data);
1746 static int cyttsp4_core_sleep(struct cyttsp4 *cd)
1750 rc = cyttsp4_request_exclusive(cd, cd->dev,
1751 CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
1753 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1754 __func__, cd->exclusive_dev, cd->dev);
1758 rc = cyttsp4_core_sleep_(cd);
1760 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1761 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1763 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1768 static int cyttsp4_core_wake_(struct cyttsp4 *cd)
1770 struct device *dev = cd->dev;
1775 /* Already woken? */
1776 mutex_lock(&cd->system_lock);
1777 if (cd->sleep_state == SS_SLEEP_OFF) {
1778 mutex_unlock(&cd->system_lock);
1781 cd->int_status &= ~CY_INT_IGNORE;
1782 cd->int_status |= CY_INT_AWAKE;
1783 cd->sleep_state = SS_WAKING;
1785 if (cd->cpdata->power) {
1786 dev_dbg(dev, "%s: Power up HW\n", __func__);
1787 rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
1789 dev_dbg(dev, "%s: No power function\n", __func__);
1793 dev_err(dev, "%s: HW Power up fails r=%d\n",
1796 /* Initiate a read transaction to wake up */
1797 cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1799 dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
1801 mutex_unlock(&cd->system_lock);
1803 t = wait_event_timeout(cd->wait_q,
1804 (cd->int_status & CY_INT_AWAKE) == 0,
1805 msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
1807 dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
1808 mutex_lock(&cd->system_lock);
1809 cd->int_status &= ~CY_INT_AWAKE;
1810 /* Try starting up */
1811 cyttsp4_queue_startup_(cd);
1812 mutex_unlock(&cd->system_lock);
1815 mutex_lock(&cd->system_lock);
1816 cd->sleep_state = SS_SLEEP_OFF;
1817 mutex_unlock(&cd->system_lock);
1819 cyttsp4_start_wd_timer(cd);
1824 static int cyttsp4_core_wake(struct cyttsp4 *cd)
1828 rc = cyttsp4_request_exclusive(cd, cd->dev,
1829 CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
1831 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1832 __func__, cd->exclusive_dev, cd->dev);
1836 rc = cyttsp4_core_wake_(cd);
1838 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1839 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1841 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1846 static int cyttsp4_core_suspend(struct device *dev)
1848 struct cyttsp4 *cd = dev_get_drvdata(dev);
1849 struct cyttsp4_mt_data *md = &cd->md;
1852 md->is_suspended = true;
1854 rc = cyttsp4_core_sleep(cd);
1856 dev_err(dev, "%s: Error on sleep\n", __func__);
1862 static int cyttsp4_core_resume(struct device *dev)
1864 struct cyttsp4 *cd = dev_get_drvdata(dev);
1865 struct cyttsp4_mt_data *md = &cd->md;
1868 md->is_suspended = false;
1870 rc = cyttsp4_core_wake(cd);
1872 dev_err(dev, "%s: Error on wake\n", __func__);
1879 EXPORT_GPL_RUNTIME_DEV_PM_OPS(cyttsp4_pm_ops,
1880 cyttsp4_core_suspend, cyttsp4_core_resume, NULL);
1882 static int cyttsp4_mt_open(struct input_dev *input)
1884 pm_runtime_get(input->dev.parent);
1888 static void cyttsp4_mt_close(struct input_dev *input)
1890 struct cyttsp4_mt_data *md = input_get_drvdata(input);
1891 mutex_lock(&md->report_lock);
1892 if (!md->is_suspended)
1893 pm_runtime_put(input->dev.parent);
1894 mutex_unlock(&md->report_lock);
1898 static int cyttsp4_setup_input_device(struct cyttsp4 *cd)
1900 struct device *dev = cd->dev;
1901 struct cyttsp4_mt_data *md = &cd->md;
1902 int signal = CY_IGNORE_VALUE;
1903 int max_x, max_y, max_p, min, max;
1904 int max_x_tmp, max_y_tmp;
1908 dev_vdbg(dev, "%s: Initialize event signals\n", __func__);
1909 __set_bit(EV_ABS, md->input->evbit);
1910 __set_bit(EV_REL, md->input->evbit);
1911 __set_bit(EV_KEY, md->input->evbit);
1913 max_x_tmp = md->si->si_ofs.max_x;
1914 max_y_tmp = md->si->si_ofs.max_y;
1916 /* get maximum values from the sysinfo data */
1917 if (md->pdata->flags & CY_FLAG_FLIP) {
1918 max_x = max_y_tmp - 1;
1919 max_y = max_x_tmp - 1;
1921 max_x = max_x_tmp - 1;
1922 max_y = max_y_tmp - 1;
1924 max_p = md->si->si_ofs.max_p;
1926 /* set event signal capabilities */
1927 for (i = 0; i < (md->pdata->frmwrk->size / CY_NUM_ABS_SET); i++) {
1928 signal = md->pdata->frmwrk->abs
1929 [(i * CY_NUM_ABS_SET) + CY_SIGNAL_OST];
1930 if (signal != CY_IGNORE_VALUE) {
1931 __set_bit(signal, md->input->absbit);
1932 min = md->pdata->frmwrk->abs
1933 [(i * CY_NUM_ABS_SET) + CY_MIN_OST];
1934 max = md->pdata->frmwrk->abs
1935 [(i * CY_NUM_ABS_SET) + CY_MAX_OST];
1936 if (i == CY_ABS_ID_OST) {
1937 /* shift track ids down to start at 0 */
1940 } else if (i == CY_ABS_X_OST)
1942 else if (i == CY_ABS_Y_OST)
1944 else if (i == CY_ABS_P_OST)
1946 input_set_abs_params(md->input, signal, min, max,
1947 md->pdata->frmwrk->abs
1948 [(i * CY_NUM_ABS_SET) + CY_FUZZ_OST],
1949 md->pdata->frmwrk->abs
1950 [(i * CY_NUM_ABS_SET) + CY_FLAT_OST]);
1951 dev_dbg(dev, "%s: register signal=%02X min=%d max=%d\n",
1952 __func__, signal, min, max);
1953 if ((i == CY_ABS_ID_OST) &&
1954 (md->si->si_ofs.tch_rec_size <
1955 CY_TMA4XX_TCH_REC_SIZE))
1960 input_mt_init_slots(md->input, md->si->si_ofs.tch_abs[CY_TCH_T].max,
1962 rc = input_register_device(md->input);
1964 dev_err(dev, "%s: Error, failed register input device r=%d\n",
1969 static int cyttsp4_mt_probe(struct cyttsp4 *cd)
1971 struct device *dev = cd->dev;
1972 struct cyttsp4_mt_data *md = &cd->md;
1973 struct cyttsp4_mt_platform_data *pdata = cd->pdata->mt_pdata;
1976 mutex_init(&md->report_lock);
1978 /* Create the input device and register it. */
1979 dev_vdbg(dev, "%s: Create the input device and register it\n",
1981 md->input = input_allocate_device();
1982 if (md->input == NULL) {
1983 dev_err(dev, "%s: Error, failed to allocate input device\n",
1986 goto error_alloc_failed;
1989 md->input->name = pdata->inp_dev_name;
1990 scnprintf(md->phys, sizeof(md->phys)-1, "%s", dev_name(dev));
1991 md->input->phys = md->phys;
1992 md->input->id.bustype = cd->bus_ops->bustype;
1993 md->input->dev.parent = dev;
1994 md->input->open = cyttsp4_mt_open;
1995 md->input->close = cyttsp4_mt_close;
1996 input_set_drvdata(md->input, md);
1999 md->si = &cd->sysinfo;
2001 rc = cyttsp4_setup_input_device(cd);
2003 goto error_init_input;
2008 input_free_device(md->input);
2010 dev_err(dev, "%s failed.\n", __func__);
2014 struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
2015 struct device *dev, u16 irq, size_t xfer_buf_size)
2018 struct cyttsp4_platform_data *pdata = dev_get_platdata(dev);
2019 unsigned long irq_flags;
2022 if (!pdata || !pdata->core_pdata || !pdata->mt_pdata) {
2023 dev_err(dev, "%s: Missing platform data\n", __func__);
2025 goto error_no_pdata;
2028 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
2030 dev_err(dev, "%s: Error, kzalloc\n", __func__);
2032 goto error_alloc_data;
2035 cd->xfer_buf = kzalloc(xfer_buf_size, GFP_KERNEL);
2036 if (!cd->xfer_buf) {
2037 dev_err(dev, "%s: Error, kzalloc\n", __func__);
2042 /* Initialize device info */
2045 cd->cpdata = pdata->core_pdata;
2048 /* Initialize mutexes and spinlocks */
2049 mutex_init(&cd->system_lock);
2050 mutex_init(&cd->adap_lock);
2052 /* Initialize wait queue */
2053 init_waitqueue_head(&cd->wait_q);
2055 /* Initialize works */
2056 INIT_WORK(&cd->startup_work, cyttsp4_startup_work_function);
2057 INIT_WORK(&cd->watchdog_work, cyttsp4_watchdog_work);
2059 /* Initialize IRQ */
2060 cd->irq = gpio_to_irq(cd->cpdata->irq_gpio);
2063 goto error_free_xfer;
2066 dev_set_drvdata(dev, cd);
2068 /* Call platform init function */
2069 if (cd->cpdata->init) {
2070 dev_dbg(cd->dev, "%s: Init HW\n", __func__);
2071 rc = cd->cpdata->init(cd->cpdata, 1, cd->dev);
2073 dev_dbg(cd->dev, "%s: No HW INIT function\n", __func__);
2077 dev_err(cd->dev, "%s: HW Init fail r=%d\n", __func__, rc);
2079 dev_dbg(dev, "%s: initialize threaded irq=%d\n", __func__, cd->irq);
2080 if (cd->cpdata->level_irq_udelay > 0)
2081 /* use level triggered interrupts */
2082 irq_flags = IRQF_TRIGGER_LOW | IRQF_ONESHOT;
2084 /* use edge triggered interrupts */
2085 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
2087 rc = request_threaded_irq(cd->irq, NULL, cyttsp4_irq, irq_flags,
2090 dev_err(dev, "%s: Error, could not request irq\n", __func__);
2091 goto error_request_irq;
2094 /* Setup watchdog timer */
2095 timer_setup(&cd->watchdog_timer, cyttsp4_watchdog_timer, 0);
2098 * call startup directly to ensure that the device
2099 * is tested before leaving the probe
2101 rc = cyttsp4_startup(cd);
2103 /* Do not fail probe if startup fails but the device is detected */
2104 if (rc < 0 && cd->mode == CY_MODE_UNKNOWN) {
2105 dev_err(cd->dev, "%s: Fail initial startup r=%d\n",
2110 rc = cyttsp4_mt_probe(cd);
2112 dev_err(dev, "%s: Error, fail mt probe\n", __func__);
2116 pm_runtime_enable(dev);
2121 cancel_work_sync(&cd->startup_work);
2122 cyttsp4_stop_wd_timer(cd);
2123 pm_runtime_disable(dev);
2124 cyttsp4_free_si_ptrs(cd);
2125 free_irq(cd->irq, cd);
2127 if (cd->cpdata->init)
2128 cd->cpdata->init(cd->cpdata, 0, dev);
2130 kfree(cd->xfer_buf);
2135 dev_err(dev, "%s failed.\n", __func__);
2138 EXPORT_SYMBOL_GPL(cyttsp4_probe);
2140 static void cyttsp4_mt_release(struct cyttsp4_mt_data *md)
2142 input_unregister_device(md->input);
2143 input_set_drvdata(md->input, NULL);
2146 int cyttsp4_remove(struct cyttsp4 *cd)
2148 struct device *dev = cd->dev;
2150 cyttsp4_mt_release(&cd->md);
2153 * Suspend the device before freeing the startup_work and stopping
2154 * the watchdog since sleep function restarts watchdog on failure
2156 pm_runtime_suspend(dev);
2157 pm_runtime_disable(dev);
2159 cancel_work_sync(&cd->startup_work);
2161 cyttsp4_stop_wd_timer(cd);
2163 free_irq(cd->irq, cd);
2164 if (cd->cpdata->init)
2165 cd->cpdata->init(cd->cpdata, 0, dev);
2166 cyttsp4_free_si_ptrs(cd);
2170 EXPORT_SYMBOL_GPL(cyttsp4_remove);
2172 MODULE_LICENSE("GPL");
2173 MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen core driver");
2174 MODULE_AUTHOR("Cypress");