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 u8 ldr_exit[] = {
34 0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
37 static const u8 ldr_err_app[] = {
38 0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17
41 static inline size_t merge_bytes(u8 high, u8 low)
43 return (high << 8) + low;
47 static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size,
48 const char *data_name)
51 const char fmt[] = "%02X ";
57 max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED);
60 for (i = k = 0; i < size && k < max; i++, k += 3)
61 scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]);
63 dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1,
64 pr_buf, size <= max ? "" : CY_PR_TRUNCATED);
67 #define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0)
70 static int cyttsp4_load_status_regs(struct cyttsp4 *cd)
72 struct cyttsp4_sysinfo *si = &cd->sysinfo;
73 struct device *dev = cd->dev;
76 rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size,
79 dev_err(dev, "%s: fail read mode regs r=%d\n",
82 cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode,
83 si->si_ofs.mode_size, "xy_mode");
88 static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode)
90 u8 cmd = mode ^ CY_HST_TOGGLE;
94 * Mode change issued, handshaking now will cause endless mode change
95 * requests, for sync mode modechange will do same with handshake
97 if (mode & CY_HST_MODE_CHANGE)
100 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
102 dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n",
108 static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd)
110 u8 cmd = CY_HST_RESET;
111 int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
113 dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n",
120 static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd)
122 if (cd->cpdata->xres) {
123 cd->cpdata->xres(cd->cpdata, cd->dev);
124 dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__);
127 dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__);
131 static int cyttsp4_hw_reset(struct cyttsp4 *cd)
133 int rc = cyttsp4_hw_hard_reset(cd);
135 rc = cyttsp4_hw_soft_reset(cd);
140 * Gets number of bits for a touch filed as parameter,
141 * sets maximum value for field which is used as bit mask
142 * and returns number of bytes required for that field
144 static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max)
147 return (nbits + 7) / 8;
150 static int cyttsp4_si_data_offsets(struct cyttsp4 *cd)
152 struct cyttsp4_sysinfo *si = &cd->sysinfo;
153 int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data),
156 dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n",
161 /* Print sysinfo data offsets */
162 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data,
163 sizeof(si->si_data), "sysinfo_data_offsets");
165 /* convert sysinfo data offset bytes into integers */
167 si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
168 si->si_data.map_szl);
169 si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
170 si->si_data.map_szl);
171 si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh,
172 si->si_data.cydata_ofsl);
173 si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh,
174 si->si_data.test_ofsl);
175 si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh,
176 si->si_data.pcfg_ofsl);
177 si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh,
178 si->si_data.opcfg_ofsl);
179 si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh,
180 si->si_data.ddata_ofsl);
181 si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh,
182 si->si_data.mdata_ofsl);
186 static int cyttsp4_si_get_cydata(struct cyttsp4 *cd)
188 struct cyttsp4_sysinfo *si = &cd->sysinfo;
190 int mfgid_sz, calc_mfgid_sz;
194 if (si->si_ofs.test_ofs <= si->si_ofs.cydata_ofs) {
196 "%s: invalid offset test_ofs: %zu, cydata_ofs: %zu\n",
197 __func__, si->si_ofs.test_ofs, si->si_ofs.cydata_ofs);
201 si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs;
202 dev_dbg(cd->dev, "%s: cydata size: %zd\n", __func__,
203 si->si_ofs.cydata_size);
205 p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL);
207 dev_err(cd->dev, "%s: failed to allocate cydata memory\n",
211 si->si_ptrs.cydata = p;
213 read_offset = si->si_ofs.cydata_ofs;
215 /* Read the CYDA registers up to MFGID field */
216 rc = cyttsp4_adap_read(cd, read_offset,
217 offsetof(struct cyttsp4_cydata, mfgid_sz)
218 + sizeof(si->si_ptrs.cydata->mfgid_sz),
221 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
226 /* Check MFGID size */
227 mfgid_sz = si->si_ptrs.cydata->mfgid_sz;
228 calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata);
229 if (mfgid_sz != calc_mfgid_sz) {
230 dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n",
231 __func__, mfgid_sz, calc_mfgid_sz);
235 read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz)
236 + sizeof(si->si_ptrs.cydata->mfgid_sz);
238 /* Read the CYDA registers for MFGID field */
239 rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz,
240 si->si_ptrs.cydata->mfg_id);
242 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
247 read_offset += si->si_ptrs.cydata->mfgid_sz;
249 /* Read the rest of the CYDA registers */
250 rc = cyttsp4_adap_read(cd, read_offset,
251 sizeof(struct cyttsp4_cydata)
252 - offsetof(struct cyttsp4_cydata, cyito_idh),
253 &si->si_ptrs.cydata->cyito_idh);
255 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
260 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata,
261 si->si_ofs.cydata_size, "sysinfo_cydata");
265 static int cyttsp4_si_get_test_data(struct cyttsp4 *cd)
267 struct cyttsp4_sysinfo *si = &cd->sysinfo;
271 if (si->si_ofs.pcfg_ofs <= si->si_ofs.test_ofs) {
273 "%s: invalid offset pcfg_ofs: %zu, test_ofs: %zu\n",
274 __func__, si->si_ofs.pcfg_ofs, si->si_ofs.test_ofs);
278 si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs;
280 p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL);
282 dev_err(cd->dev, "%s: failed to allocate test memory\n",
286 si->si_ptrs.test = p;
288 rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size,
291 dev_err(cd->dev, "%s: fail read test data r=%d\n",
296 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
297 (u8 *)si->si_ptrs.test, si->si_ofs.test_size,
298 "sysinfo_test_data");
299 if (si->si_ptrs.test->post_codel &
300 CY_POST_CODEL_WDG_RST)
301 dev_info(cd->dev, "%s: %s codel=%02X\n",
302 __func__, "Reset was a WATCHDOG RESET",
303 si->si_ptrs.test->post_codel);
305 if (!(si->si_ptrs.test->post_codel &
306 CY_POST_CODEL_CFG_DATA_CRC_FAIL))
307 dev_info(cd->dev, "%s: %s codel=%02X\n", __func__,
308 "Config Data CRC FAIL",
309 si->si_ptrs.test->post_codel);
311 if (!(si->si_ptrs.test->post_codel &
312 CY_POST_CODEL_PANEL_TEST_FAIL))
313 dev_info(cd->dev, "%s: %s codel=%02X\n",
314 __func__, "PANEL TEST FAIL",
315 si->si_ptrs.test->post_codel);
317 dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n",
318 __func__, si->si_ptrs.test->post_codel & 0x08 ?
319 "ENABLED" : "DISABLED",
320 si->si_ptrs.test->post_codel);
324 static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd)
326 struct cyttsp4_sysinfo *si = &cd->sysinfo;
330 if (si->si_ofs.opcfg_ofs <= si->si_ofs.pcfg_ofs) {
332 "%s: invalid offset opcfg_ofs: %zu, pcfg_ofs: %zu\n",
333 __func__, si->si_ofs.opcfg_ofs, si->si_ofs.pcfg_ofs);
337 si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs;
339 p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL);
341 dev_err(cd->dev, "%s: failed to allocate pcfg memory\n",
345 si->si_ptrs.pcfg = p;
347 rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size,
350 dev_err(cd->dev, "%s: fail read pcfg data r=%d\n",
355 si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh
356 & CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl);
357 si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh
358 & CY_PCFG_ORIGIN_X_MASK);
359 si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh
360 & CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl);
361 si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh
362 & CY_PCFG_ORIGIN_Y_MASK);
363 si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh,
364 si->si_ptrs.pcfg->max_zl);
366 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
367 (u8 *)si->si_ptrs.pcfg,
368 si->si_ofs.pcfg_size, "sysinfo_pcfg_data");
372 static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd)
374 struct cyttsp4_sysinfo *si = &cd->sysinfo;
375 struct cyttsp4_tch_abs_params *tch;
376 struct cyttsp4_tch_rec_params *tch_old, *tch_new;
377 enum cyttsp4_tch_abs abs;
382 if (si->si_ofs.ddata_ofs <= si->si_ofs.opcfg_ofs) {
384 "%s: invalid offset ddata_ofs: %zu, opcfg_ofs: %zu\n",
385 __func__, si->si_ofs.ddata_ofs, si->si_ofs.opcfg_ofs);
389 si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs;
391 p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL);
393 dev_err(cd->dev, "%s: failed to allocate opcfg memory\n",
397 si->si_ptrs.opcfg = p;
399 rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size,
402 dev_err(cd->dev, "%s: fail read opcfg data r=%d\n",
406 si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs;
407 si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs;
408 si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) +
409 si->si_ptrs.opcfg->rep_szl;
410 si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns;
411 si->si_ofs.num_btn_regs = (si->si_ofs.num_btns +
412 CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG;
413 si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs;
414 si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0;
415 si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs &
417 si->si_ofs.tch_rec_size = si->si_ptrs.opcfg->tch_rec_size &
420 /* Get the old touch fields */
421 for (abs = CY_TCH_X; abs < CY_NUM_TCH_FIELDS; abs++) {
422 tch = &si->si_ofs.tch_abs[abs];
423 tch_old = &si->si_ptrs.opcfg->tch_rec_old[abs];
425 tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK;
426 tch->size = cyttsp4_bits_2_bytes(tch_old->size,
428 tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
432 si->si_ofs.btn_rec_size = si->si_ptrs.opcfg->btn_rec_size;
433 si->si_ofs.btn_diff_ofs = si->si_ptrs.opcfg->btn_diff_ofs;
434 si->si_ofs.btn_diff_size = si->si_ptrs.opcfg->btn_diff_size;
436 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
437 /* Get the extended touch fields */
438 for (i = 0; i < CY_NUM_EXT_TCH_FIELDS; abs++, i++) {
439 tch = &si->si_ofs.tch_abs[abs];
440 tch_new = &si->si_ptrs.opcfg->tch_rec_new[i];
442 tch->ofs = tch_new->loc & CY_BYTE_OFS_MASK;
443 tch->size = cyttsp4_bits_2_bytes(tch_new->size,
445 tch->bofs = (tch_new->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
449 for (abs = 0; abs < CY_TCH_NUM_ABS; abs++) {
450 dev_dbg(cd->dev, "%s: tch_rec_%s\n", __func__,
451 cyttsp4_tch_abs_string[abs]);
452 dev_dbg(cd->dev, "%s: ofs =%2zd\n", __func__,
453 si->si_ofs.tch_abs[abs].ofs);
454 dev_dbg(cd->dev, "%s: siz =%2zd\n", __func__,
455 si->si_ofs.tch_abs[abs].size);
456 dev_dbg(cd->dev, "%s: max =%2zd\n", __func__,
457 si->si_ofs.tch_abs[abs].max);
458 dev_dbg(cd->dev, "%s: bofs=%2zd\n", __func__,
459 si->si_ofs.tch_abs[abs].bofs);
462 si->si_ofs.mode_size = si->si_ofs.tt_stat_ofs + 1;
463 si->si_ofs.data_size = si->si_ofs.max_tchs *
464 si->si_ptrs.opcfg->tch_rec_size;
466 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.opcfg,
467 si->si_ofs.opcfg_size, "sysinfo_opcfg_data");
472 static int cyttsp4_si_get_ddata(struct cyttsp4 *cd)
474 struct cyttsp4_sysinfo *si = &cd->sysinfo;
478 si->si_ofs.ddata_size = si->si_ofs.mdata_ofs - si->si_ofs.ddata_ofs;
480 p = krealloc(si->si_ptrs.ddata, si->si_ofs.ddata_size, GFP_KERNEL);
482 dev_err(cd->dev, "%s: fail alloc ddata memory\n", __func__);
485 si->si_ptrs.ddata = p;
487 rc = cyttsp4_adap_read(cd, si->si_ofs.ddata_ofs, si->si_ofs.ddata_size,
490 dev_err(cd->dev, "%s: fail read ddata data r=%d\n",
493 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
494 (u8 *)si->si_ptrs.ddata,
495 si->si_ofs.ddata_size, "sysinfo_ddata");
499 static int cyttsp4_si_get_mdata(struct cyttsp4 *cd)
501 struct cyttsp4_sysinfo *si = &cd->sysinfo;
505 si->si_ofs.mdata_size = si->si_ofs.map_sz - si->si_ofs.mdata_ofs;
507 p = krealloc(si->si_ptrs.mdata, si->si_ofs.mdata_size, GFP_KERNEL);
509 dev_err(cd->dev, "%s: fail alloc mdata memory\n", __func__);
512 si->si_ptrs.mdata = p;
514 rc = cyttsp4_adap_read(cd, si->si_ofs.mdata_ofs, si->si_ofs.mdata_size,
517 dev_err(cd->dev, "%s: fail read mdata data r=%d\n",
520 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
521 (u8 *)si->si_ptrs.mdata,
522 si->si_ofs.mdata_size, "sysinfo_mdata");
526 static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd)
528 struct cyttsp4_sysinfo *si = &cd->sysinfo;
530 int num_defined_keys;
535 if (si->si_ofs.num_btns) {
536 si->si_ofs.btn_keys_size = si->si_ofs.num_btns *
537 sizeof(struct cyttsp4_btn);
539 p = krealloc(si->btn, si->si_ofs.btn_keys_size,
540 GFP_KERNEL|__GFP_ZERO);
542 dev_err(cd->dev, "%s: %s\n", __func__,
543 "fail alloc btn_keys memory");
548 if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS] == NULL)
549 num_defined_keys = 0;
550 else if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS]->data == NULL)
551 num_defined_keys = 0;
553 num_defined_keys = cd->cpdata->sett
554 [CY_IC_GRPNUM_BTN_KEYS]->size;
556 for (btn = 0; btn < si->si_ofs.num_btns &&
557 btn < num_defined_keys; btn++) {
558 key_table = (u16 *)cd->cpdata->sett
559 [CY_IC_GRPNUM_BTN_KEYS]->data;
560 si->btn[btn].key_code = key_table[btn];
561 si->btn[btn].state = CY_BTN_RELEASED;
562 si->btn[btn].enabled = true;
564 for (; btn < si->si_ofs.num_btns; btn++) {
565 si->btn[btn].key_code = KEY_RESERVED;
566 si->btn[btn].state = CY_BTN_RELEASED;
567 si->btn[btn].enabled = true;
573 si->si_ofs.btn_keys_size = 0;
579 static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd)
581 struct cyttsp4_sysinfo *si = &cd->sysinfo;
584 p = krealloc(si->xy_mode, si->si_ofs.mode_size, GFP_KERNEL|__GFP_ZERO);
589 p = krealloc(si->xy_data, si->si_ofs.data_size, GFP_KERNEL|__GFP_ZERO);
594 p = krealloc(si->btn_rec_data,
595 si->si_ofs.btn_rec_size * si->si_ofs.num_btns,
596 GFP_KERNEL|__GFP_ZERO);
599 si->btn_rec_data = p;
604 static void cyttsp4_si_put_log_data(struct cyttsp4 *cd)
606 struct cyttsp4_sysinfo *si = &cd->sysinfo;
607 dev_dbg(cd->dev, "%s: cydata_ofs =%4zd siz=%4zd\n", __func__,
608 si->si_ofs.cydata_ofs, si->si_ofs.cydata_size);
609 dev_dbg(cd->dev, "%s: test_ofs =%4zd siz=%4zd\n", __func__,
610 si->si_ofs.test_ofs, si->si_ofs.test_size);
611 dev_dbg(cd->dev, "%s: pcfg_ofs =%4zd siz=%4zd\n", __func__,
612 si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size);
613 dev_dbg(cd->dev, "%s: opcfg_ofs =%4zd siz=%4zd\n", __func__,
614 si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size);
615 dev_dbg(cd->dev, "%s: ddata_ofs =%4zd siz=%4zd\n", __func__,
616 si->si_ofs.ddata_ofs, si->si_ofs.ddata_size);
617 dev_dbg(cd->dev, "%s: mdata_ofs =%4zd siz=%4zd\n", __func__,
618 si->si_ofs.mdata_ofs, si->si_ofs.mdata_size);
620 dev_dbg(cd->dev, "%s: cmd_ofs =%4zd\n", __func__,
622 dev_dbg(cd->dev, "%s: rep_ofs =%4zd\n", __func__,
624 dev_dbg(cd->dev, "%s: rep_sz =%4zd\n", __func__,
626 dev_dbg(cd->dev, "%s: num_btns =%4zd\n", __func__,
627 si->si_ofs.num_btns);
628 dev_dbg(cd->dev, "%s: num_btn_regs =%4zd\n", __func__,
629 si->si_ofs.num_btn_regs);
630 dev_dbg(cd->dev, "%s: tt_stat_ofs =%4zd\n", __func__,
631 si->si_ofs.tt_stat_ofs);
632 dev_dbg(cd->dev, "%s: tch_rec_size =%4zd\n", __func__,
633 si->si_ofs.tch_rec_size);
634 dev_dbg(cd->dev, "%s: max_tchs =%4zd\n", __func__,
635 si->si_ofs.max_tchs);
636 dev_dbg(cd->dev, "%s: mode_size =%4zd\n", __func__,
637 si->si_ofs.mode_size);
638 dev_dbg(cd->dev, "%s: data_size =%4zd\n", __func__,
639 si->si_ofs.data_size);
640 dev_dbg(cd->dev, "%s: map_sz =%4zd\n", __func__,
643 dev_dbg(cd->dev, "%s: btn_rec_size =%2zd\n", __func__,
644 si->si_ofs.btn_rec_size);
645 dev_dbg(cd->dev, "%s: btn_diff_ofs =%2zd\n", __func__,
646 si->si_ofs.btn_diff_ofs);
647 dev_dbg(cd->dev, "%s: btn_diff_size =%2zd\n", __func__,
648 si->si_ofs.btn_diff_size);
650 dev_dbg(cd->dev, "%s: max_x = 0x%04zX (%zd)\n", __func__,
651 si->si_ofs.max_x, si->si_ofs.max_x);
652 dev_dbg(cd->dev, "%s: x_origin = %zd (%s)\n", __func__,
654 si->si_ofs.x_origin == CY_NORMAL_ORIGIN ?
655 "left corner" : "right corner");
656 dev_dbg(cd->dev, "%s: max_y = 0x%04zX (%zd)\n", __func__,
657 si->si_ofs.max_y, si->si_ofs.max_y);
658 dev_dbg(cd->dev, "%s: y_origin = %zd (%s)\n", __func__,
660 si->si_ofs.y_origin == CY_NORMAL_ORIGIN ?
661 "upper corner" : "lower corner");
662 dev_dbg(cd->dev, "%s: max_p = 0x%04zX (%zd)\n", __func__,
663 si->si_ofs.max_p, si->si_ofs.max_p);
665 dev_dbg(cd->dev, "%s: xy_mode=%p xy_data=%p\n", __func__,
666 si->xy_mode, si->xy_data);
669 static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd)
671 struct cyttsp4_sysinfo *si = &cd->sysinfo;
674 rc = cyttsp4_si_data_offsets(cd);
678 rc = cyttsp4_si_get_cydata(cd);
682 rc = cyttsp4_si_get_test_data(cd);
686 rc = cyttsp4_si_get_pcfg_data(cd);
690 rc = cyttsp4_si_get_opcfg_data(cd);
694 rc = cyttsp4_si_get_ddata(cd);
698 rc = cyttsp4_si_get_mdata(cd);
702 rc = cyttsp4_si_get_btn_data(cd);
706 rc = cyttsp4_si_get_op_data_ptrs(cd);
708 dev_err(cd->dev, "%s: failed to get_op_data\n",
713 cyttsp4_si_put_log_data(cd);
715 /* provide flow control handshake */
716 rc = cyttsp4_handshake(cd, si->si_data.hst_mode);
718 dev_err(cd->dev, "%s: handshake fail on sysinfo reg\n",
725 static void cyttsp4_queue_startup_(struct cyttsp4 *cd)
727 if (cd->startup_state == STARTUP_NONE) {
728 cd->startup_state = STARTUP_QUEUED;
729 schedule_work(&cd->startup_work);
730 dev_dbg(cd->dev, "%s: cyttsp4_startup queued\n", __func__);
732 dev_dbg(cd->dev, "%s: startup_state = %d\n", __func__,
737 static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md,
742 if (md->num_prv_tch == 0)
745 for (t = 0; t < max_slots; t++) {
746 input_mt_slot(md->input, t);
747 input_mt_report_slot_inactive(md->input);
751 static void cyttsp4_lift_all(struct cyttsp4_mt_data *md)
756 if (md->num_prv_tch != 0) {
757 cyttsp4_report_slot_liftoff(md,
758 md->si->si_ofs.tch_abs[CY_TCH_T].max);
759 input_sync(md->input);
764 static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md,
765 int *axis, int size, int max, u8 *xy_data, int bofs)
770 for (nbyte = 0, *axis = 0, next = 0; nbyte < size; nbyte++) {
771 dev_vdbg(&md->input->dev,
772 "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
773 " xy_data[%d]=%02X(%d) bofs=%d\n",
774 __func__, *axis, *axis, size, max, xy_data, next,
775 xy_data[next], xy_data[next], bofs);
776 *axis = (*axis * 256) + (xy_data[next] >> bofs);
782 dev_vdbg(&md->input->dev,
783 "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
784 " xy_data[%d]=%02X(%d)\n",
785 __func__, *axis, *axis, size, max, xy_data, next,
786 xy_data[next], xy_data[next]);
789 static void cyttsp4_get_touch(struct cyttsp4_mt_data *md,
790 struct cyttsp4_touch *touch, u8 *xy_data)
792 struct device *dev = &md->input->dev;
793 struct cyttsp4_sysinfo *si = md->si;
794 enum cyttsp4_tch_abs abs;
797 for (abs = CY_TCH_X; abs < CY_TCH_NUM_ABS; abs++) {
798 cyttsp4_get_touch_axis(md, &touch->abs[abs],
799 si->si_ofs.tch_abs[abs].size,
800 si->si_ofs.tch_abs[abs].max,
801 xy_data + si->si_ofs.tch_abs[abs].ofs,
802 si->si_ofs.tch_abs[abs].bofs);
803 dev_vdbg(dev, "%s: get %s=%04X(%d)\n", __func__,
804 cyttsp4_tch_abs_string[abs],
805 touch->abs[abs], touch->abs[abs]);
808 if (md->pdata->flags & CY_FLAG_FLIP) {
809 swap(touch->abs[CY_TCH_X], touch->abs[CY_TCH_Y]);
814 if (md->pdata->flags & CY_FLAG_INV_X) {
816 touch->abs[CY_TCH_X] = md->si->si_ofs.max_y -
817 touch->abs[CY_TCH_X];
819 touch->abs[CY_TCH_X] = md->si->si_ofs.max_x -
820 touch->abs[CY_TCH_X];
822 if (md->pdata->flags & CY_FLAG_INV_Y) {
824 touch->abs[CY_TCH_Y] = md->si->si_ofs.max_x -
825 touch->abs[CY_TCH_Y];
827 touch->abs[CY_TCH_Y] = md->si->si_ofs.max_y -
828 touch->abs[CY_TCH_Y];
831 dev_vdbg(dev, "%s: flip=%s inv-x=%s inv-y=%s x=%04X(%d) y=%04X(%d)\n",
832 __func__, flipped ? "true" : "false",
833 md->pdata->flags & CY_FLAG_INV_X ? "true" : "false",
834 md->pdata->flags & CY_FLAG_INV_Y ? "true" : "false",
835 touch->abs[CY_TCH_X], touch->abs[CY_TCH_X],
836 touch->abs[CY_TCH_Y], touch->abs[CY_TCH_Y]);
839 static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids)
843 for (t = 0; t < max_slots; t++) {
846 input_mt_slot(input, t);
847 input_mt_report_slot_inactive(input);
853 static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
855 struct device *dev = &md->input->dev;
856 struct cyttsp4_sysinfo *si = md->si;
857 struct cyttsp4_touch tch;
860 int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
862 memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
863 for (i = 0; i < num_cur_tch; i++) {
864 cyttsp4_get_touch(md, &tch, si->xy_data +
865 (i * si->si_ofs.tch_rec_size));
866 if ((tch.abs[CY_TCH_T] < md->pdata->frmwrk->abs
867 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST]) ||
868 (tch.abs[CY_TCH_T] > md->pdata->frmwrk->abs
869 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MAX_OST])) {
870 dev_err(dev, "%s: tch=%d -> bad trk_id=%d max_id=%d\n",
871 __func__, i, tch.abs[CY_TCH_T],
872 md->pdata->frmwrk->abs[(CY_ABS_ID_OST *
873 CY_NUM_ABS_SET) + CY_MAX_OST]);
877 /* use 0 based track id's */
878 sig = md->pdata->frmwrk->abs
879 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + 0];
880 if (sig != CY_IGNORE_VALUE) {
881 t = tch.abs[CY_TCH_T] - md->pdata->frmwrk->abs
882 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST];
883 if (tch.abs[CY_TCH_E] == CY_EV_LIFTOFF) {
884 dev_dbg(dev, "%s: t=%d e=%d lift-off\n",
885 __func__, t, tch.abs[CY_TCH_E]);
886 goto cyttsp4_get_mt_touches_pr_tch;
888 input_mt_slot(md->input, t);
889 input_mt_report_slot_state(md->input, MT_TOOL_FINGER,
894 /* all devices: position and pressure fields */
895 for (j = 0; j <= CY_ABS_W_OST; j++) {
896 sig = md->pdata->frmwrk->abs[((CY_ABS_X_OST + j) *
897 CY_NUM_ABS_SET) + 0];
898 if (sig != CY_IGNORE_VALUE)
899 input_report_abs(md->input, sig,
900 tch.abs[CY_TCH_X + j]);
902 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
904 * TMA400 size and orientation fields:
905 * if pressure is non-zero and major touch
906 * signal is zero, then set major and minor touch
907 * signals to minimum non-zero value
909 if (tch.abs[CY_TCH_P] > 0 && tch.abs[CY_TCH_MAJ] == 0)
910 tch.abs[CY_TCH_MAJ] = tch.abs[CY_TCH_MIN] = 1;
912 /* Get the extended touch fields */
913 for (j = 0; j < CY_NUM_EXT_TCH_FIELDS; j++) {
914 sig = md->pdata->frmwrk->abs
915 [((CY_ABS_MAJ_OST + j) *
916 CY_NUM_ABS_SET) + 0];
917 if (sig != CY_IGNORE_VALUE)
918 input_report_abs(md->input, sig,
919 tch.abs[CY_TCH_MAJ + j]);
923 cyttsp4_get_mt_touches_pr_tch:
924 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE)
926 "%s: t=%d x=%d y=%d z=%d M=%d m=%d o=%d e=%d\n",
937 "%s: t=%d x=%d y=%d z=%d e=%d\n", __func__,
945 cyttsp4_final_sync(md->input, si->si_ofs.tch_abs[CY_TCH_T].max, ids);
947 md->num_prv_tch = num_cur_tch;
952 /* read xy_data for all current touches */
953 static int cyttsp4_xy_worker(struct cyttsp4 *cd)
955 struct cyttsp4_mt_data *md = &cd->md;
956 struct device *dev = &md->input->dev;
957 struct cyttsp4_sysinfo *si = md->si;
966 * Get event data from cyttsp4 device.
967 * The event data includes all data
968 * for all active touches.
969 * Event data also includes button data
973 * 1st read to get mode + button bytes + touch count (core)
974 * 2nd read (optional) to get touch 1 - touch n data
976 hst_mode = si->xy_mode[CY_REG_BASE];
977 rep_len = si->xy_mode[si->si_ofs.rep_ofs];
978 rep_stat = si->xy_mode[si->si_ofs.rep_ofs + 1];
979 tt_stat = si->xy_mode[si->si_ofs.tt_stat_ofs];
980 dev_vdbg(dev, "%s: %s%02X %s%d %s%02X %s%02X\n", __func__,
981 "hst_mode=", hst_mode, "rep_len=", rep_len,
982 "rep_stat=", rep_stat, "tt_stat=", tt_stat);
984 num_cur_tch = GET_NUM_TOUCHES(tt_stat);
985 dev_vdbg(dev, "%s: num_cur_tch=%d\n", __func__, num_cur_tch);
987 if (rep_len == 0 && num_cur_tch > 0) {
988 dev_err(dev, "%s: report length error rep_len=%d num_tch=%d\n",
989 __func__, rep_len, num_cur_tch);
990 goto cyttsp4_xy_worker_exit;
994 if (num_cur_tch > 0) {
995 rc = cyttsp4_adap_read(cd, si->si_ofs.tt_stat_ofs + 1,
996 num_cur_tch * si->si_ofs.tch_rec_size,
999 dev_err(dev, "%s: read fail on touch regs r=%d\n",
1001 goto cyttsp4_xy_worker_exit;
1006 cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_data, num_cur_tch *
1007 si->si_ofs.tch_rec_size, "xy_data");
1009 /* check any error conditions */
1010 if (IS_BAD_PKT(rep_stat)) {
1011 dev_dbg(dev, "%s: Invalid buffer detected\n", __func__);
1013 goto cyttsp4_xy_worker_exit;
1016 if (IS_LARGE_AREA(tt_stat))
1017 dev_dbg(dev, "%s: Large area detected\n", __func__);
1019 if (num_cur_tch > si->si_ofs.max_tchs) {
1020 dev_err(dev, "%s: too many tch; set to max tch (n=%d c=%zd)\n",
1021 __func__, num_cur_tch, si->si_ofs.max_tchs);
1022 num_cur_tch = si->si_ofs.max_tchs;
1025 /* extract xy_data for all currently reported touches */
1026 dev_vdbg(dev, "%s: extract data num_cur_tch=%d\n", __func__,
1029 cyttsp4_get_mt_touches(md, num_cur_tch);
1031 cyttsp4_lift_all(md);
1035 cyttsp4_xy_worker_exit:
1039 static int cyttsp4_mt_attention(struct cyttsp4 *cd)
1041 struct device *dev = cd->dev;
1042 struct cyttsp4_mt_data *md = &cd->md;
1048 mutex_lock(&md->report_lock);
1049 if (!md->is_suspended) {
1050 /* core handles handshake */
1051 rc = cyttsp4_xy_worker(cd);
1053 dev_vdbg(dev, "%s: Ignoring report while suspended\n",
1056 mutex_unlock(&md->report_lock);
1058 dev_err(dev, "%s: xy_worker error r=%d\n", __func__, rc);
1063 static irqreturn_t cyttsp4_irq(int irq, void *handle)
1065 struct cyttsp4 *cd = handle;
1066 struct device *dev = cd->dev;
1067 enum cyttsp4_mode cur_mode;
1068 u8 cmd_ofs = cd->sysinfo.si_ofs.cmd_ofs;
1073 * Check whether this IRQ should be ignored (external)
1074 * This should be the very first thing to check since
1075 * ignore_irq may be set for a very short period of time
1077 if (atomic_read(&cd->ignore_irq)) {
1078 dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
1082 dev_dbg(dev, "%s int:0x%x\n", __func__, cd->int_status);
1084 mutex_lock(&cd->system_lock);
1087 if (cd->sleep_state == SS_SLEEP_ON || cd->sleep_state == SS_SLEEPING)
1088 dev_vdbg(dev, "%s: Received IRQ while in sleep\n", __func__);
1090 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), mode);
1092 dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
1093 goto cyttsp4_irq_exit;
1095 dev_vdbg(dev, "%s mode[0-2]:0x%X 0x%X 0x%X\n", __func__,
1096 mode[0], mode[1], mode[2]);
1098 if (IS_BOOTLOADER(mode[0], mode[1])) {
1099 cur_mode = CY_MODE_BOOTLOADER;
1100 dev_vdbg(dev, "%s: bl running\n", __func__);
1101 if (cd->mode == CY_MODE_BOOTLOADER) {
1102 /* Signal bootloader heartbeat heard */
1103 wake_up(&cd->wait_q);
1104 goto cyttsp4_irq_exit;
1107 /* switch to bootloader */
1108 dev_dbg(dev, "%s: restart switch to bl m=%d -> m=%d\n",
1109 __func__, cd->mode, cur_mode);
1111 /* catch operation->bl glitch */
1112 if (cd->mode != CY_MODE_UNKNOWN) {
1113 /* Incase startup_state do not let startup_() */
1114 cd->mode = CY_MODE_UNKNOWN;
1115 cyttsp4_queue_startup_(cd);
1116 goto cyttsp4_irq_exit;
1120 * do not wake thread on this switch since
1121 * it is possible to get an early heartbeat
1122 * prior to performing the reset
1124 cd->mode = cur_mode;
1126 goto cyttsp4_irq_exit;
1129 switch (mode[0] & CY_HST_MODE) {
1130 case CY_HST_OPERATE:
1131 cur_mode = CY_MODE_OPERATIONAL;
1132 dev_vdbg(dev, "%s: operational\n", __func__);
1135 cur_mode = CY_MODE_CAT;
1136 dev_vdbg(dev, "%s: CaT\n", __func__);
1138 case CY_HST_SYSINFO:
1139 cur_mode = CY_MODE_SYSINFO;
1140 dev_vdbg(dev, "%s: sysinfo\n", __func__);
1143 cur_mode = CY_MODE_UNKNOWN;
1144 dev_err(dev, "%s: unknown HST mode 0x%02X\n", __func__,
1149 /* Check whether this IRQ should be ignored (internal) */
1150 if (cd->int_status & CY_INT_IGNORE) {
1151 dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
1152 goto cyttsp4_irq_exit;
1155 /* Check for wake up interrupt */
1156 if (cd->int_status & CY_INT_AWAKE) {
1157 cd->int_status &= ~CY_INT_AWAKE;
1158 wake_up(&cd->wait_q);
1159 dev_vdbg(dev, "%s: Received wake up interrupt\n", __func__);
1160 goto cyttsp4_irq_handshake;
1163 /* Expecting mode change interrupt */
1164 if ((cd->int_status & CY_INT_MODE_CHANGE)
1165 && (mode[0] & CY_HST_MODE_CHANGE) == 0) {
1166 cd->int_status &= ~CY_INT_MODE_CHANGE;
1167 dev_dbg(dev, "%s: finish mode switch m=%d -> m=%d\n",
1168 __func__, cd->mode, cur_mode);
1169 cd->mode = cur_mode;
1170 wake_up(&cd->wait_q);
1171 goto cyttsp4_irq_handshake;
1174 /* compare current core mode to current device mode */
1175 dev_vdbg(dev, "%s: cd->mode=%d cur_mode=%d\n",
1176 __func__, cd->mode, cur_mode);
1177 if ((mode[0] & CY_HST_MODE_CHANGE) == 0 && cd->mode != cur_mode) {
1178 /* Unexpected mode change occurred */
1179 dev_err(dev, "%s %d->%d 0x%x\n", __func__, cd->mode,
1180 cur_mode, cd->int_status);
1181 dev_dbg(dev, "%s: Unexpected mode change, startup\n",
1183 cyttsp4_queue_startup_(cd);
1184 goto cyttsp4_irq_exit;
1187 /* Expecting command complete interrupt */
1188 dev_vdbg(dev, "%s: command byte:0x%x\n", __func__, mode[cmd_ofs]);
1189 if ((cd->int_status & CY_INT_EXEC_CMD)
1190 && mode[cmd_ofs] & CY_CMD_COMPLETE) {
1191 cd->int_status &= ~CY_INT_EXEC_CMD;
1192 dev_vdbg(dev, "%s: Received command complete interrupt\n",
1194 wake_up(&cd->wait_q);
1196 * It is possible to receive a single interrupt for
1197 * command complete and touch/button status report.
1198 * Continue processing for a possible status report.
1202 /* This should be status report, read status regs */
1203 if (cd->mode == CY_MODE_OPERATIONAL) {
1204 dev_vdbg(dev, "%s: Read status registers\n", __func__);
1205 rc = cyttsp4_load_status_regs(cd);
1207 dev_err(dev, "%s: fail read mode regs r=%d\n",
1211 cyttsp4_mt_attention(cd);
1213 cyttsp4_irq_handshake:
1214 /* handshake the event */
1215 dev_vdbg(dev, "%s: Handshake mode=0x%02X r=%d\n",
1216 __func__, mode[0], rc);
1217 rc = cyttsp4_handshake(cd, mode[0]);
1219 dev_err(dev, "%s: Fail handshake mode=0x%02X r=%d\n",
1220 __func__, mode[0], rc);
1223 * a non-zero udelay period is required for using
1224 * IRQF_TRIGGER_LOW in order to delay until the
1225 * device completes isr deassert
1227 udelay(cd->cpdata->level_irq_udelay);
1230 mutex_unlock(&cd->system_lock);
1234 static void cyttsp4_start_wd_timer(struct cyttsp4 *cd)
1236 if (!CY_WATCHDOG_TIMEOUT)
1239 mod_timer(&cd->watchdog_timer, jiffies +
1240 msecs_to_jiffies(CY_WATCHDOG_TIMEOUT));
1243 static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
1245 if (!CY_WATCHDOG_TIMEOUT)
1249 * Ensure we wait until the watchdog timer
1250 * running on a different CPU finishes
1252 del_timer_sync(&cd->watchdog_timer);
1253 cancel_work_sync(&cd->watchdog_work);
1254 del_timer_sync(&cd->watchdog_timer);
1257 static void cyttsp4_watchdog_timer(struct timer_list *t)
1259 struct cyttsp4 *cd = from_timer(cd, t, watchdog_timer);
1261 dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
1263 schedule_work(&cd->watchdog_work);
1268 static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr,
1271 int t = msecs_to_jiffies(timeout_ms);
1272 bool with_timeout = (timeout_ms != 0);
1274 mutex_lock(&cd->system_lock);
1275 if (!cd->exclusive_dev && cd->exclusive_waits == 0) {
1276 cd->exclusive_dev = ownptr;
1280 cd->exclusive_waits++;
1282 mutex_unlock(&cd->system_lock);
1284 t = wait_event_timeout(cd->wait_q, !cd->exclusive_dev, t);
1286 dev_err(cd->dev, "%s: tmo waiting exclusive access\n",
1288 mutex_lock(&cd->system_lock);
1289 cd->exclusive_waits--;
1290 mutex_unlock(&cd->system_lock);
1294 wait_event(cd->wait_q, !cd->exclusive_dev);
1296 mutex_lock(&cd->system_lock);
1297 if (cd->exclusive_dev)
1299 cd->exclusive_dev = ownptr;
1300 cd->exclusive_waits--;
1302 mutex_unlock(&cd->system_lock);
1308 * returns error if was not owned
1310 static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr)
1312 mutex_lock(&cd->system_lock);
1313 if (cd->exclusive_dev != ownptr) {
1314 mutex_unlock(&cd->system_lock);
1318 dev_vdbg(cd->dev, "%s: exclusive_dev %p freed\n",
1319 __func__, cd->exclusive_dev);
1320 cd->exclusive_dev = NULL;
1321 wake_up(&cd->wait_q);
1322 mutex_unlock(&cd->system_lock);
1326 static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd)
1331 /* wait heartbeat */
1332 dev_vdbg(cd->dev, "%s: wait heartbeat...\n", __func__);
1333 t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_BOOTLOADER,
1334 msecs_to_jiffies(CY_CORE_RESET_AND_WAIT_TIMEOUT));
1336 dev_err(cd->dev, "%s: tmo waiting bl heartbeat cd->mode=%d\n",
1337 __func__, cd->mode);
1344 static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd)
1348 dev_vdbg(cd->dev, "%s: wait sysinfo...\n", __func__);
1350 t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_SYSINFO,
1351 msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
1353 dev_err(cd->dev, "%s: tmo waiting exit bl cd->mode=%d\n",
1354 __func__, cd->mode);
1355 mutex_lock(&cd->system_lock);
1356 cd->int_status &= ~CY_INT_MODE_CHANGE;
1357 mutex_unlock(&cd->system_lock);
1364 static int cyttsp4_reset_and_wait(struct cyttsp4 *cd)
1368 /* reset hardware */
1369 mutex_lock(&cd->system_lock);
1370 dev_dbg(cd->dev, "%s: reset hw...\n", __func__);
1371 rc = cyttsp4_hw_reset(cd);
1372 cd->mode = CY_MODE_UNKNOWN;
1373 mutex_unlock(&cd->system_lock);
1375 dev_err(cd->dev, "%s:Fail hw reset r=%d\n", __func__, rc);
1379 return cyttsp4_wait_bl_heartbeat(cd);
1383 * returns err if refused or timeout; block until mode change complete
1384 * bit is set (mode change interrupt)
1386 static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode)
1394 case CY_MODE_OPERATIONAL:
1395 new_dev_mode = CY_HST_OPERATE;
1397 case CY_MODE_SYSINFO:
1398 new_dev_mode = CY_HST_SYSINFO;
1401 new_dev_mode = CY_HST_CAT;
1404 dev_err(cd->dev, "%s: invalid mode: %02X(%d)\n",
1405 __func__, new_mode, new_mode);
1410 dev_dbg(cd->dev, "%s: %s=%p new_dev_mode=%02X new_mode=%d\n",
1411 __func__, "have exclusive", cd->exclusive_dev,
1412 new_dev_mode, new_mode);
1414 mutex_lock(&cd->system_lock);
1415 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1417 mutex_unlock(&cd->system_lock);
1418 dev_err(cd->dev, "%s: Fail read mode r=%d\n",
1423 /* Clear device mode bits and set to new mode */
1424 mode &= ~CY_HST_MODE;
1425 mode |= new_dev_mode | CY_HST_MODE_CHANGE;
1427 cd->int_status |= CY_INT_MODE_CHANGE;
1428 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode), &mode);
1429 mutex_unlock(&cd->system_lock);
1431 dev_err(cd->dev, "%s: Fail write mode change r=%d\n",
1436 /* wait for mode change done interrupt */
1437 t = wait_event_timeout(cd->wait_q,
1438 (cd->int_status & CY_INT_MODE_CHANGE) == 0,
1439 msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
1440 dev_dbg(cd->dev, "%s: back from wait t=%ld cd->mode=%d\n",
1441 __func__, t, cd->mode);
1444 dev_err(cd->dev, "%s: %s\n", __func__,
1445 "tmo waiting mode change");
1446 mutex_lock(&cd->system_lock);
1447 cd->int_status &= ~CY_INT_MODE_CHANGE;
1448 mutex_unlock(&cd->system_lock);
1456 static void cyttsp4_watchdog_work(struct work_struct *work)
1458 struct cyttsp4 *cd =
1459 container_of(work, struct cyttsp4, watchdog_work);
1463 mutex_lock(&cd->system_lock);
1464 retval = cyttsp4_load_status_regs(cd);
1467 "%s: failed to access device in watchdog timer r=%d\n",
1469 cyttsp4_queue_startup_(cd);
1470 goto cyttsp4_timer_watchdog_exit_error;
1472 mode = &cd->sysinfo.xy_mode[CY_REG_BASE];
1473 if (IS_BOOTLOADER(mode[0], mode[1])) {
1475 "%s: device found in bootloader mode when operational mode\n",
1477 cyttsp4_queue_startup_(cd);
1478 goto cyttsp4_timer_watchdog_exit_error;
1481 cyttsp4_start_wd_timer(cd);
1482 cyttsp4_timer_watchdog_exit_error:
1483 mutex_unlock(&cd->system_lock);
1487 static int cyttsp4_core_sleep_(struct cyttsp4 *cd)
1489 enum cyttsp4_sleep_state ss = SS_SLEEP_ON;
1490 enum cyttsp4_int_state int_status = CY_INT_IGNORE;
1494 /* Already in sleep mode? */
1495 mutex_lock(&cd->system_lock);
1496 if (cd->sleep_state == SS_SLEEP_ON) {
1497 mutex_unlock(&cd->system_lock);
1500 cd->sleep_state = SS_SLEEPING;
1501 mutex_unlock(&cd->system_lock);
1503 cyttsp4_stop_wd_timer(cd);
1505 /* Wait until currently running IRQ handler exits and disable IRQ */
1506 disable_irq(cd->irq);
1508 dev_vdbg(cd->dev, "%s: write DEEP SLEEP...\n", __func__);
1509 mutex_lock(&cd->system_lock);
1510 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1512 mutex_unlock(&cd->system_lock);
1513 dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
1517 if (IS_BOOTLOADER(mode[0], mode[1])) {
1518 mutex_unlock(&cd->system_lock);
1519 dev_err(cd->dev, "%s: Device in BOOTLOADER mode.\n", __func__);
1524 mode[0] |= CY_HST_SLEEP;
1525 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode[0]), &mode[0]);
1526 mutex_unlock(&cd->system_lock);
1528 dev_err(cd->dev, "%s: Fail write adapter r=%d\n", __func__, rc);
1531 dev_vdbg(cd->dev, "%s: write DEEP SLEEP succeeded\n", __func__);
1533 if (cd->cpdata->power) {
1534 dev_dbg(cd->dev, "%s: Power down HW\n", __func__);
1535 rc = cd->cpdata->power(cd->cpdata, 0, cd->dev, &cd->ignore_irq);
1537 dev_dbg(cd->dev, "%s: No power function\n", __func__);
1541 dev_err(cd->dev, "%s: HW Power down fails r=%d\n",
1546 /* Give time to FW to sleep */
1553 int_status = CY_INT_NONE;
1554 cyttsp4_start_wd_timer(cd);
1557 mutex_lock(&cd->system_lock);
1558 cd->sleep_state = ss;
1559 cd->int_status |= int_status;
1560 mutex_unlock(&cd->system_lock);
1561 enable_irq(cd->irq);
1565 static int cyttsp4_startup_(struct cyttsp4 *cd)
1567 int retry = CY_CORE_STARTUP_RETRY_COUNT;
1570 cyttsp4_stop_wd_timer(cd);
1573 if (retry != CY_CORE_STARTUP_RETRY_COUNT)
1574 dev_dbg(cd->dev, "%s: Retry %d\n", __func__,
1575 CY_CORE_STARTUP_RETRY_COUNT - retry);
1577 /* reset hardware and wait for heartbeat */
1578 rc = cyttsp4_reset_and_wait(cd);
1580 dev_err(cd->dev, "%s: Error on h/w reset r=%d\n", __func__, rc);
1586 /* exit bl into sysinfo mode */
1587 dev_vdbg(cd->dev, "%s: write exit ldr...\n", __func__);
1588 mutex_lock(&cd->system_lock);
1589 cd->int_status &= ~CY_INT_IGNORE;
1590 cd->int_status |= CY_INT_MODE_CHANGE;
1592 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(ldr_exit),
1594 mutex_unlock(&cd->system_lock);
1596 dev_err(cd->dev, "%s: Fail write r=%d\n", __func__, rc);
1602 rc = cyttsp4_wait_sysinfo_mode(cd);
1604 u8 buf[sizeof(ldr_err_app)];
1607 /* Check for invalid/corrupted touch application */
1608 rc1 = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(ldr_err_app),
1611 dev_err(cd->dev, "%s: Fail read r=%d\n", __func__, rc1);
1612 } else if (!memcmp(buf, ldr_err_app, sizeof(ldr_err_app))) {
1613 dev_err(cd->dev, "%s: Error launching touch application\n",
1615 mutex_lock(&cd->system_lock);
1616 cd->invalid_touch_app = true;
1617 mutex_unlock(&cd->system_lock);
1626 mutex_lock(&cd->system_lock);
1627 cd->invalid_touch_app = false;
1628 mutex_unlock(&cd->system_lock);
1630 /* read sysinfo data */
1631 dev_vdbg(cd->dev, "%s: get sysinfo regs..\n", __func__);
1632 rc = cyttsp4_get_sysinfo_regs(cd);
1634 dev_err(cd->dev, "%s: failed to get sysinfo regs rc=%d\n",
1641 rc = cyttsp4_set_mode(cd, CY_MODE_OPERATIONAL);
1643 dev_err(cd->dev, "%s: failed to set mode to operational rc=%d\n",
1650 cyttsp4_lift_all(&cd->md);
1652 /* restore to sleep if was suspended */
1653 mutex_lock(&cd->system_lock);
1654 if (cd->sleep_state == SS_SLEEP_ON) {
1655 cd->sleep_state = SS_SLEEP_OFF;
1656 mutex_unlock(&cd->system_lock);
1657 cyttsp4_core_sleep_(cd);
1660 mutex_unlock(&cd->system_lock);
1663 cyttsp4_start_wd_timer(cd);
1668 static int cyttsp4_startup(struct cyttsp4 *cd)
1672 mutex_lock(&cd->system_lock);
1673 cd->startup_state = STARTUP_RUNNING;
1674 mutex_unlock(&cd->system_lock);
1676 rc = cyttsp4_request_exclusive(cd, cd->dev,
1677 CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
1679 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1680 __func__, cd->exclusive_dev, cd->dev);
1684 rc = cyttsp4_startup_(cd);
1686 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1687 /* Don't return fail code, mode is already changed. */
1688 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1690 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1693 mutex_lock(&cd->system_lock);
1694 cd->startup_state = STARTUP_NONE;
1695 mutex_unlock(&cd->system_lock);
1697 /* Wake the waiters for end of startup */
1698 wake_up(&cd->wait_q);
1703 static void cyttsp4_startup_work_function(struct work_struct *work)
1705 struct cyttsp4 *cd = container_of(work, struct cyttsp4, startup_work);
1708 rc = cyttsp4_startup(cd);
1710 dev_err(cd->dev, "%s: Fail queued startup r=%d\n",
1714 static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
1716 struct cyttsp4_sysinfo *si = &cd->sysinfo;
1721 kfree(si->si_ptrs.cydata);
1722 kfree(si->si_ptrs.test);
1723 kfree(si->si_ptrs.pcfg);
1724 kfree(si->si_ptrs.opcfg);
1725 kfree(si->si_ptrs.ddata);
1726 kfree(si->si_ptrs.mdata);
1730 kfree(si->btn_rec_data);
1734 static int cyttsp4_core_sleep(struct cyttsp4 *cd)
1738 rc = cyttsp4_request_exclusive(cd, cd->dev,
1739 CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
1741 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1742 __func__, cd->exclusive_dev, cd->dev);
1746 rc = cyttsp4_core_sleep_(cd);
1748 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1749 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1751 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1756 static int cyttsp4_core_wake_(struct cyttsp4 *cd)
1758 struct device *dev = cd->dev;
1763 /* Already woken? */
1764 mutex_lock(&cd->system_lock);
1765 if (cd->sleep_state == SS_SLEEP_OFF) {
1766 mutex_unlock(&cd->system_lock);
1769 cd->int_status &= ~CY_INT_IGNORE;
1770 cd->int_status |= CY_INT_AWAKE;
1771 cd->sleep_state = SS_WAKING;
1773 if (cd->cpdata->power) {
1774 dev_dbg(dev, "%s: Power up HW\n", __func__);
1775 rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
1777 dev_dbg(dev, "%s: No power function\n", __func__);
1781 dev_err(dev, "%s: HW Power up fails r=%d\n",
1784 /* Initiate a read transaction to wake up */
1785 cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1787 dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
1789 mutex_unlock(&cd->system_lock);
1791 t = wait_event_timeout(cd->wait_q,
1792 (cd->int_status & CY_INT_AWAKE) == 0,
1793 msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
1795 dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
1796 mutex_lock(&cd->system_lock);
1797 cd->int_status &= ~CY_INT_AWAKE;
1798 /* Try starting up */
1799 cyttsp4_queue_startup_(cd);
1800 mutex_unlock(&cd->system_lock);
1803 mutex_lock(&cd->system_lock);
1804 cd->sleep_state = SS_SLEEP_OFF;
1805 mutex_unlock(&cd->system_lock);
1807 cyttsp4_start_wd_timer(cd);
1812 static int cyttsp4_core_wake(struct cyttsp4 *cd)
1816 rc = cyttsp4_request_exclusive(cd, cd->dev,
1817 CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
1819 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1820 __func__, cd->exclusive_dev, cd->dev);
1824 rc = cyttsp4_core_wake_(cd);
1826 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1827 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1829 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1834 static int cyttsp4_core_suspend(struct device *dev)
1836 struct cyttsp4 *cd = dev_get_drvdata(dev);
1837 struct cyttsp4_mt_data *md = &cd->md;
1840 md->is_suspended = true;
1842 rc = cyttsp4_core_sleep(cd);
1844 dev_err(dev, "%s: Error on sleep\n", __func__);
1850 static int cyttsp4_core_resume(struct device *dev)
1852 struct cyttsp4 *cd = dev_get_drvdata(dev);
1853 struct cyttsp4_mt_data *md = &cd->md;
1856 md->is_suspended = false;
1858 rc = cyttsp4_core_wake(cd);
1860 dev_err(dev, "%s: Error on wake\n", __func__);
1868 const struct dev_pm_ops cyttsp4_pm_ops = {
1869 SET_SYSTEM_SLEEP_PM_OPS(cyttsp4_core_suspend, cyttsp4_core_resume)
1870 SET_RUNTIME_PM_OPS(cyttsp4_core_suspend, cyttsp4_core_resume, NULL)
1872 EXPORT_SYMBOL_GPL(cyttsp4_pm_ops);
1874 static int cyttsp4_mt_open(struct input_dev *input)
1876 pm_runtime_get(input->dev.parent);
1880 static void cyttsp4_mt_close(struct input_dev *input)
1882 struct cyttsp4_mt_data *md = input_get_drvdata(input);
1883 mutex_lock(&md->report_lock);
1884 if (!md->is_suspended)
1885 pm_runtime_put(input->dev.parent);
1886 mutex_unlock(&md->report_lock);
1890 static int cyttsp4_setup_input_device(struct cyttsp4 *cd)
1892 struct device *dev = cd->dev;
1893 struct cyttsp4_mt_data *md = &cd->md;
1894 int signal = CY_IGNORE_VALUE;
1895 int max_x, max_y, max_p, min, max;
1896 int max_x_tmp, max_y_tmp;
1900 dev_vdbg(dev, "%s: Initialize event signals\n", __func__);
1901 __set_bit(EV_ABS, md->input->evbit);
1902 __set_bit(EV_REL, md->input->evbit);
1903 __set_bit(EV_KEY, md->input->evbit);
1905 max_x_tmp = md->si->si_ofs.max_x;
1906 max_y_tmp = md->si->si_ofs.max_y;
1908 /* get maximum values from the sysinfo data */
1909 if (md->pdata->flags & CY_FLAG_FLIP) {
1910 max_x = max_y_tmp - 1;
1911 max_y = max_x_tmp - 1;
1913 max_x = max_x_tmp - 1;
1914 max_y = max_y_tmp - 1;
1916 max_p = md->si->si_ofs.max_p;
1918 /* set event signal capabilities */
1919 for (i = 0; i < (md->pdata->frmwrk->size / CY_NUM_ABS_SET); i++) {
1920 signal = md->pdata->frmwrk->abs
1921 [(i * CY_NUM_ABS_SET) + CY_SIGNAL_OST];
1922 if (signal != CY_IGNORE_VALUE) {
1923 __set_bit(signal, md->input->absbit);
1924 min = md->pdata->frmwrk->abs
1925 [(i * CY_NUM_ABS_SET) + CY_MIN_OST];
1926 max = md->pdata->frmwrk->abs
1927 [(i * CY_NUM_ABS_SET) + CY_MAX_OST];
1928 if (i == CY_ABS_ID_OST) {
1929 /* shift track ids down to start at 0 */
1932 } else if (i == CY_ABS_X_OST)
1934 else if (i == CY_ABS_Y_OST)
1936 else if (i == CY_ABS_P_OST)
1938 input_set_abs_params(md->input, signal, min, max,
1939 md->pdata->frmwrk->abs
1940 [(i * CY_NUM_ABS_SET) + CY_FUZZ_OST],
1941 md->pdata->frmwrk->abs
1942 [(i * CY_NUM_ABS_SET) + CY_FLAT_OST]);
1943 dev_dbg(dev, "%s: register signal=%02X min=%d max=%d\n",
1944 __func__, signal, min, max);
1945 if ((i == CY_ABS_ID_OST) &&
1946 (md->si->si_ofs.tch_rec_size <
1947 CY_TMA4XX_TCH_REC_SIZE))
1952 input_mt_init_slots(md->input, md->si->si_ofs.tch_abs[CY_TCH_T].max,
1954 rc = input_register_device(md->input);
1956 dev_err(dev, "%s: Error, failed register input device r=%d\n",
1961 static int cyttsp4_mt_probe(struct cyttsp4 *cd)
1963 struct device *dev = cd->dev;
1964 struct cyttsp4_mt_data *md = &cd->md;
1965 struct cyttsp4_mt_platform_data *pdata = cd->pdata->mt_pdata;
1968 mutex_init(&md->report_lock);
1970 /* Create the input device and register it. */
1971 dev_vdbg(dev, "%s: Create the input device and register it\n",
1973 md->input = input_allocate_device();
1974 if (md->input == NULL) {
1975 dev_err(dev, "%s: Error, failed to allocate input device\n",
1978 goto error_alloc_failed;
1981 md->input->name = pdata->inp_dev_name;
1982 scnprintf(md->phys, sizeof(md->phys)-1, "%s", dev_name(dev));
1983 md->input->phys = md->phys;
1984 md->input->id.bustype = cd->bus_ops->bustype;
1985 md->input->dev.parent = dev;
1986 md->input->open = cyttsp4_mt_open;
1987 md->input->close = cyttsp4_mt_close;
1988 input_set_drvdata(md->input, md);
1991 md->si = &cd->sysinfo;
1993 rc = cyttsp4_setup_input_device(cd);
1995 goto error_init_input;
2000 input_free_device(md->input);
2002 dev_err(dev, "%s failed.\n", __func__);
2006 struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
2007 struct device *dev, u16 irq, size_t xfer_buf_size)
2010 struct cyttsp4_platform_data *pdata = dev_get_platdata(dev);
2011 unsigned long irq_flags;
2014 if (!pdata || !pdata->core_pdata || !pdata->mt_pdata) {
2015 dev_err(dev, "%s: Missing platform data\n", __func__);
2017 goto error_no_pdata;
2020 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
2022 dev_err(dev, "%s: Error, kzalloc\n", __func__);
2024 goto error_alloc_data;
2027 cd->xfer_buf = kzalloc(xfer_buf_size, GFP_KERNEL);
2028 if (!cd->xfer_buf) {
2029 dev_err(dev, "%s: Error, kzalloc\n", __func__);
2034 /* Initialize device info */
2037 cd->cpdata = pdata->core_pdata;
2040 /* Initialize mutexes and spinlocks */
2041 mutex_init(&cd->system_lock);
2042 mutex_init(&cd->adap_lock);
2044 /* Initialize wait queue */
2045 init_waitqueue_head(&cd->wait_q);
2047 /* Initialize works */
2048 INIT_WORK(&cd->startup_work, cyttsp4_startup_work_function);
2049 INIT_WORK(&cd->watchdog_work, cyttsp4_watchdog_work);
2051 /* Initialize IRQ */
2052 cd->irq = gpio_to_irq(cd->cpdata->irq_gpio);
2055 goto error_free_xfer;
2058 dev_set_drvdata(dev, cd);
2060 /* Call platform init function */
2061 if (cd->cpdata->init) {
2062 dev_dbg(cd->dev, "%s: Init HW\n", __func__);
2063 rc = cd->cpdata->init(cd->cpdata, 1, cd->dev);
2065 dev_dbg(cd->dev, "%s: No HW INIT function\n", __func__);
2069 dev_err(cd->dev, "%s: HW Init fail r=%d\n", __func__, rc);
2071 dev_dbg(dev, "%s: initialize threaded irq=%d\n", __func__, cd->irq);
2072 if (cd->cpdata->level_irq_udelay > 0)
2073 /* use level triggered interrupts */
2074 irq_flags = IRQF_TRIGGER_LOW | IRQF_ONESHOT;
2076 /* use edge triggered interrupts */
2077 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
2079 rc = request_threaded_irq(cd->irq, NULL, cyttsp4_irq, irq_flags,
2082 dev_err(dev, "%s: Error, could not request irq\n", __func__);
2083 goto error_request_irq;
2086 /* Setup watchdog timer */
2087 timer_setup(&cd->watchdog_timer, cyttsp4_watchdog_timer, 0);
2090 * call startup directly to ensure that the device
2091 * is tested before leaving the probe
2093 rc = cyttsp4_startup(cd);
2095 /* Do not fail probe if startup fails but the device is detected */
2096 if (rc < 0 && cd->mode == CY_MODE_UNKNOWN) {
2097 dev_err(cd->dev, "%s: Fail initial startup r=%d\n",
2102 rc = cyttsp4_mt_probe(cd);
2104 dev_err(dev, "%s: Error, fail mt probe\n", __func__);
2108 pm_runtime_enable(dev);
2113 cancel_work_sync(&cd->startup_work);
2114 cyttsp4_stop_wd_timer(cd);
2115 pm_runtime_disable(dev);
2116 cyttsp4_free_si_ptrs(cd);
2117 free_irq(cd->irq, cd);
2119 if (cd->cpdata->init)
2120 cd->cpdata->init(cd->cpdata, 0, dev);
2122 kfree(cd->xfer_buf);
2127 dev_err(dev, "%s failed.\n", __func__);
2130 EXPORT_SYMBOL_GPL(cyttsp4_probe);
2132 static void cyttsp4_mt_release(struct cyttsp4_mt_data *md)
2134 input_unregister_device(md->input);
2135 input_set_drvdata(md->input, NULL);
2138 int cyttsp4_remove(struct cyttsp4 *cd)
2140 struct device *dev = cd->dev;
2142 cyttsp4_mt_release(&cd->md);
2145 * Suspend the device before freeing the startup_work and stopping
2146 * the watchdog since sleep function restarts watchdog on failure
2148 pm_runtime_suspend(dev);
2149 pm_runtime_disable(dev);
2151 cancel_work_sync(&cd->startup_work);
2153 cyttsp4_stop_wd_timer(cd);
2155 free_irq(cd->irq, cd);
2156 if (cd->cpdata->init)
2157 cd->cpdata->init(cd->cpdata, 0, dev);
2158 cyttsp4_free_si_ptrs(cd);
2162 EXPORT_SYMBOL_GPL(cyttsp4_remove);
2164 MODULE_LICENSE("GPL");
2165 MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen core driver");
2166 MODULE_AUTHOR("Cypress");