aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/input/touchscreen/Kconfig12
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/cyttsp4_core.c2169
-rw-r--r--drivers/input/touchscreen/cyttsp4_core.h472
-rw-r--r--include/linux/platform_data/cyttsp4.h76
5 files changed, 2730 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index f9a5fd89bc02..66df8df88140 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -167,6 +167,18 @@ config TOUCHSCREEN_CYTTSP_SPI
167 To compile this driver as a module, choose M here: the 167 To compile this driver as a module, choose M here: the
168 module will be called cyttsp_spi. 168 module will be called cyttsp_spi.
169 169
170config TOUCHSCREEN_CYTTSP4_CORE
171 tristate "Cypress TrueTouch Gen4 Touchscreen Driver"
172 help
173 Core driver for Cypress TrueTouch(tm) Standard Product
174 Generation4 touchscreen controllers.
175
176 Say Y here if you have a Cypress Gen4 touchscreen.
177
178 If unsure, say N.
179
180 To compile this driver as a module, choose M here.
181
170config TOUCHSCREEN_DA9034 182config TOUCHSCREEN_DA9034
171 tristate "Touchscreen support for Dialog Semiconductor DA9034" 183 tristate "Touchscreen support for Dialog Semiconductor DA9034"
172 depends on PMIC_DA903X 184 depends on PMIC_DA903X
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 2b378b12ee6b..f44500674c32 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o
20obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o 20obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o
21obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o cyttsp_i2c_common.o 21obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o cyttsp_i2c_common.o
22obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI) += cyttsp_spi.o 22obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI) += cyttsp_spi.o
23obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_CORE) += cyttsp4_core.o
23obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o 24obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o
24obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o 25obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o
25obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o 26obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o
diff --git a/drivers/input/touchscreen/cyttsp4_core.c b/drivers/input/touchscreen/cyttsp4_core.c
new file mode 100644
index 000000000000..963da052c15e
--- /dev/null
+++ b/drivers/input/touchscreen/cyttsp4_core.c
@@ -0,0 +1,2169 @@
1/*
2 * cyttsp4_core.c
3 * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
4 * For use with Cypress Txx4xx parts.
5 * Supported parts include:
6 * TMA4XX
7 * TMA1036
8 *
9 * Copyright (C) 2012 Cypress Semiconductor
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * version 2, and only version 2, as published by the
14 * Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
22 *
23 */
24
25#include "cyttsp4_core.h"
26#include <linux/delay.h>
27#include <linux/gpio.h>
28#include <linux/input/mt.h>
29#include <linux/interrupt.h>
30#include <linux/pm_runtime.h>
31#include <linux/sched.h>
32#include <linux/slab.h>
33
34/* Timeout in ms. */
35#define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT 500
36#define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT 5000
37#define CY_CORE_MODE_CHANGE_TIMEOUT 1000
38#define CY_CORE_RESET_AND_WAIT_TIMEOUT 500
39#define CY_CORE_WAKEUP_TIMEOUT 500
40
41#define CY_CORE_STARTUP_RETRY_COUNT 3
42
43static const u8 ldr_exit[] = {
44 0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
45};
46
47static const u8 ldr_err_app[] = {
48 0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17
49};
50
51static inline size_t merge_bytes(u8 high, u8 low)
52{
53 return (high << 8) + low;
54}
55
56#ifdef VERBOSE_DEBUG
57static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size,
58 const char *data_name)
59{
60 int i, k;
61 const char fmt[] = "%02X ";
62 int max;
63
64 if (!size)
65 return;
66
67 max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED);
68
69 pr_buf[0] = 0;
70 for (i = k = 0; i < size && k < max; i++, k += 3)
71 scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]);
72
73 dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1,
74 pr_buf, size <= max ? "" : CY_PR_TRUNCATED);
75}
76#else
77#define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0)
78#endif
79
80static int cyttsp4_load_status_regs(struct cyttsp4 *cd)
81{
82 struct cyttsp4_sysinfo *si = &cd->sysinfo;
83 struct device *dev = cd->dev;
84 int rc;
85
86 rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size,
87 si->xy_mode);
88 if (rc < 0)
89 dev_err(dev, "%s: fail read mode regs r=%d\n",
90 __func__, rc);
91 else
92 cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode,
93 si->si_ofs.mode_size, "xy_mode");
94
95 return rc;
96}
97
98static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode)
99{
100 u8 cmd = mode ^ CY_HST_TOGGLE;
101 int rc;
102
103 /*
104 * Mode change issued, handshaking now will cause endless mode change
105 * requests, for sync mode modechange will do same with handshake
106 * */
107 if (mode & CY_HST_MODE_CHANGE)
108 return 0;
109
110 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
111 if (rc < 0)
112 dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n",
113 __func__, rc);
114
115 return rc;
116}
117
118static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd)
119{
120 u8 cmd = CY_HST_RESET;
121 int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
122 if (rc < 0) {
123 dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n",
124 __func__);
125 return rc;
126 }
127 return 0;
128}
129
130static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd)
131{
132 if (cd->cpdata->xres) {
133 cd->cpdata->xres(cd->cpdata, cd->dev);
134 dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__);
135 return 0;
136 }
137 dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__);
138 return -ENOSYS;
139}
140
141static int cyttsp4_hw_reset(struct cyttsp4 *cd)
142{
143 int rc = cyttsp4_hw_hard_reset(cd);
144 if (rc == -ENOSYS)
145 rc = cyttsp4_hw_soft_reset(cd);
146 return rc;
147}
148
149/*
150 * Gets number of bits for a touch filed as parameter,
151 * sets maximum value for field which is used as bit mask
152 * and returns number of bytes required for that field
153 */
154static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max)
155{
156 *max = 1 << nbits;
157 return (nbits + 7) / 8;
158}
159
160static int cyttsp4_si_data_offsets(struct cyttsp4 *cd)
161{
162 struct cyttsp4_sysinfo *si = &cd->sysinfo;
163 int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data),
164 &si->si_data);
165 if (rc < 0) {
166 dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n",
167 __func__, rc);
168 return rc;
169 }
170
171 /* Print sysinfo data offsets */
172 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data,
173 sizeof(si->si_data), "sysinfo_data_offsets");
174
175 /* convert sysinfo data offset bytes into integers */
176
177 si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
178 si->si_data.map_szl);
179 si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
180 si->si_data.map_szl);
181 si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh,
182 si->si_data.cydata_ofsl);
183 si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh,
184 si->si_data.test_ofsl);
185 si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh,
186 si->si_data.pcfg_ofsl);
187 si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh,
188 si->si_data.opcfg_ofsl);
189 si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh,
190 si->si_data.ddata_ofsl);
191 si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh,
192 si->si_data.mdata_ofsl);
193 return rc;
194}
195
196static int cyttsp4_si_get_cydata(struct cyttsp4 *cd)
197{
198 struct cyttsp4_sysinfo *si = &cd->sysinfo;
199 int read_offset;
200 int mfgid_sz, calc_mfgid_sz;
201 void *p;
202 int rc;
203
204 si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs;
205 dev_dbg(cd->dev, "%s: cydata size: %Zd\n", __func__,
206 si->si_ofs.cydata_size);
207
208 p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL);
209 if (p == NULL) {
210 dev_err(cd->dev, "%s: fail alloc cydata memory\n", __func__);
211 return -ENOMEM;
212 }
213 si->si_ptrs.cydata = p;
214
215 read_offset = si->si_ofs.cydata_ofs;
216
217 /* Read the CYDA registers up to MFGID field */
218 rc = cyttsp4_adap_read(cd, read_offset,
219 offsetof(struct cyttsp4_cydata, mfgid_sz)
220 + sizeof(si->si_ptrs.cydata->mfgid_sz),
221 si->si_ptrs.cydata);
222 if (rc < 0) {
223 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
224 __func__, rc);
225 return rc;
226 }
227
228 /* Check MFGID size */
229 mfgid_sz = si->si_ptrs.cydata->mfgid_sz;
230 calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata);
231 if (mfgid_sz != calc_mfgid_sz) {
232 dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n",
233 __func__, mfgid_sz, calc_mfgid_sz);
234 return -EINVAL;
235 }
236
237 read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz)
238 + sizeof(si->si_ptrs.cydata->mfgid_sz);
239
240 /* Read the CYDA registers for MFGID field */
241 rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz,
242 si->si_ptrs.cydata->mfg_id);
243 if (rc < 0) {
244 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
245 __func__, rc);
246 return rc;
247 }
248
249 read_offset += si->si_ptrs.cydata->mfgid_sz;
250
251 /* Read the rest of the CYDA registers */
252 rc = cyttsp4_adap_read(cd, read_offset,
253 sizeof(struct cyttsp4_cydata)
254 - offsetof(struct cyttsp4_cydata, cyito_idh),
255 &si->si_ptrs.cydata->cyito_idh);
256 if (rc < 0) {
257 dev_err(cd->dev, "%s: fail read cydata r=%d\n",
258 __func__, rc);
259 return rc;
260 }
261
262 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata,
263 si->si_ofs.cydata_size, "sysinfo_cydata");
264 return rc;
265}
266
267static int cyttsp4_si_get_test_data(struct cyttsp4 *cd)
268{
269 struct cyttsp4_sysinfo *si = &cd->sysinfo;
270 void *p;
271 int rc;
272
273 si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs;
274
275 p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL);
276 if (p == NULL) {
277 dev_err(cd->dev, "%s: fail alloc test memory\n", __func__);
278 return -ENOMEM;
279 }
280 si->si_ptrs.test = p;
281
282 rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size,
283 si->si_ptrs.test);
284 if (rc < 0) {
285 dev_err(cd->dev, "%s: fail read test data r=%d\n",
286 __func__, rc);
287 return rc;
288 }
289
290 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
291 (u8 *)si->si_ptrs.test, si->si_ofs.test_size,
292 "sysinfo_test_data");
293 if (si->si_ptrs.test->post_codel &
294 CY_POST_CODEL_WDG_RST)
295 dev_info(cd->dev, "%s: %s codel=%02X\n",
296 __func__, "Reset was a WATCHDOG RESET",
297 si->si_ptrs.test->post_codel);
298
299 if (!(si->si_ptrs.test->post_codel &
300 CY_POST_CODEL_CFG_DATA_CRC_FAIL))
301 dev_info(cd->dev, "%s: %s codel=%02X\n", __func__,
302 "Config Data CRC FAIL",
303 si->si_ptrs.test->post_codel);
304
305 if (!(si->si_ptrs.test->post_codel &
306 CY_POST_CODEL_PANEL_TEST_FAIL))
307 dev_info(cd->dev, "%s: %s codel=%02X\n",
308 __func__, "PANEL TEST FAIL",
309 si->si_ptrs.test->post_codel);
310
311 dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n",
312 __func__, si->si_ptrs.test->post_codel & 0x08 ?
313 "ENABLED" : "DISABLED",
314 si->si_ptrs.test->post_codel);
315 return rc;
316}
317
318static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd)
319{
320 struct cyttsp4_sysinfo *si = &cd->sysinfo;
321 void *p;
322 int rc;
323
324 si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs;
325
326 p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL);
327 if (p == NULL) {
328 rc = -ENOMEM;
329 dev_err(cd->dev, "%s: fail alloc pcfg memory r=%d\n",
330 __func__, rc);
331 return rc;
332 }
333 si->si_ptrs.pcfg = p;
334
335 rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size,
336 si->si_ptrs.pcfg);
337 if (rc < 0) {
338 dev_err(cd->dev, "%s: fail read pcfg data r=%d\n",
339 __func__, rc);
340 return rc;
341 }
342
343 si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh
344 & CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl);
345 si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh
346 & CY_PCFG_ORIGIN_X_MASK);
347 si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh
348 & CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl);
349 si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh
350 & CY_PCFG_ORIGIN_Y_MASK);
351 si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh,
352 si->si_ptrs.pcfg->max_zl);
353
354 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
355 (u8 *)si->si_ptrs.pcfg,
356 si->si_ofs.pcfg_size, "sysinfo_pcfg_data");
357 return rc;
358}
359
360static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd)
361{
362 struct cyttsp4_sysinfo *si = &cd->sysinfo;
363 struct cyttsp4_tch_abs_params *tch;
364 struct cyttsp4_tch_rec_params *tch_old, *tch_new;
365 enum cyttsp4_tch_abs abs;
366 int i;
367 void *p;
368 int rc;
369
370 si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs;
371
372 p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL);
373 if (p == NULL) {
374 dev_err(cd->dev, "%s: fail alloc opcfg memory\n", __func__);
375 rc = -ENOMEM;
376 goto cyttsp4_si_get_opcfg_data_exit;
377 }
378 si->si_ptrs.opcfg = p;
379
380 rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size,
381 si->si_ptrs.opcfg);
382 if (rc < 0) {
383 dev_err(cd->dev, "%s: fail read opcfg data r=%d\n",
384 __func__, rc);
385 goto cyttsp4_si_get_opcfg_data_exit;
386 }
387 si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs;
388 si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs;
389 si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) +
390 si->si_ptrs.opcfg->rep_szl;
391 si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns;
392 si->si_ofs.num_btn_regs = (si->si_ofs.num_btns +
393 CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG;
394 si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs;
395 si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0;
396 si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs &
397 CY_BYTE_OFS_MASK;
398 si->si_ofs.tch_rec_size = si->si_ptrs.opcfg->tch_rec_size &
399 CY_BYTE_OFS_MASK;
400
401 /* Get the old touch fields */
402 for (abs = CY_TCH_X; abs < CY_NUM_TCH_FIELDS; abs++) {
403 tch = &si->si_ofs.tch_abs[abs];
404 tch_old = &si->si_ptrs.opcfg->tch_rec_old[abs];
405
406 tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK;
407 tch->size = cyttsp4_bits_2_bytes(tch_old->size,
408 &tch->max);
409 tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
410 }
411
412 /* button fields */
413 si->si_ofs.btn_rec_size = si->si_ptrs.opcfg->btn_rec_size;
414 si->si_ofs.btn_diff_ofs = si->si_ptrs.opcfg->btn_diff_ofs;
415 si->si_ofs.btn_diff_size = si->si_ptrs.opcfg->btn_diff_size;
416
417 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
418 /* Get the extended touch fields */
419 for (i = 0; i < CY_NUM_EXT_TCH_FIELDS; abs++, i++) {
420 tch = &si->si_ofs.tch_abs[abs];
421 tch_new = &si->si_ptrs.opcfg->tch_rec_new[i];
422
423 tch->ofs = tch_new->loc & CY_BYTE_OFS_MASK;
424 tch->size = cyttsp4_bits_2_bytes(tch_new->size,
425 &tch->max);
426 tch->bofs = (tch_new->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
427 }
428 }
429
430 for (abs = 0; abs < CY_TCH_NUM_ABS; abs++) {
431 dev_dbg(cd->dev, "%s: tch_rec_%s\n", __func__,
432 cyttsp4_tch_abs_string[abs]);
433 dev_dbg(cd->dev, "%s: ofs =%2Zd\n", __func__,
434 si->si_ofs.tch_abs[abs].ofs);
435 dev_dbg(cd->dev, "%s: siz =%2Zd\n", __func__,
436 si->si_ofs.tch_abs[abs].size);
437 dev_dbg(cd->dev, "%s: max =%2Zd\n", __func__,
438 si->si_ofs.tch_abs[abs].max);
439 dev_dbg(cd->dev, "%s: bofs=%2Zd\n", __func__,
440 si->si_ofs.tch_abs[abs].bofs);
441 }
442
443 si->si_ofs.mode_size = si->si_ofs.tt_stat_ofs + 1;
444 si->si_ofs.data_size = si->si_ofs.max_tchs *
445 si->si_ptrs.opcfg->tch_rec_size;
446
447 cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.opcfg,
448 si->si_ofs.opcfg_size, "sysinfo_opcfg_data");
449
450cyttsp4_si_get_opcfg_data_exit:
451 return rc;
452}
453
454static int cyttsp4_si_get_ddata(struct cyttsp4 *cd)
455{
456 struct cyttsp4_sysinfo *si = &cd->sysinfo;
457 void *p;
458 int rc;
459
460 si->si_ofs.ddata_size = si->si_ofs.mdata_ofs - si->si_ofs.ddata_ofs;
461
462 p = krealloc(si->si_ptrs.ddata, si->si_ofs.ddata_size, GFP_KERNEL);
463 if (p == NULL) {
464 dev_err(cd->dev, "%s: fail alloc ddata memory\n", __func__);
465 return -ENOMEM;
466 }
467 si->si_ptrs.ddata = p;
468
469 rc = cyttsp4_adap_read(cd, si->si_ofs.ddata_ofs, si->si_ofs.ddata_size,
470 si->si_ptrs.ddata);
471 if (rc < 0)
472 dev_err(cd->dev, "%s: fail read ddata data r=%d\n",
473 __func__, rc);
474 else
475 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
476 (u8 *)si->si_ptrs.ddata,
477 si->si_ofs.ddata_size, "sysinfo_ddata");
478 return rc;
479}
480
481static int cyttsp4_si_get_mdata(struct cyttsp4 *cd)
482{
483 struct cyttsp4_sysinfo *si = &cd->sysinfo;
484 void *p;
485 int rc;
486
487 si->si_ofs.mdata_size = si->si_ofs.map_sz - si->si_ofs.mdata_ofs;
488
489 p = krealloc(si->si_ptrs.mdata, si->si_ofs.mdata_size, GFP_KERNEL);
490 if (p == NULL) {
491 dev_err(cd->dev, "%s: fail alloc mdata memory\n", __func__);
492 return -ENOMEM;
493 }
494 si->si_ptrs.mdata = p;
495
496 rc = cyttsp4_adap_read(cd, si->si_ofs.mdata_ofs, si->si_ofs.mdata_size,
497 si->si_ptrs.mdata);
498 if (rc < 0)
499 dev_err(cd->dev, "%s: fail read mdata data r=%d\n",
500 __func__, rc);
501 else
502 cyttsp4_pr_buf(cd->dev, cd->pr_buf,
503 (u8 *)si->si_ptrs.mdata,
504 si->si_ofs.mdata_size, "sysinfo_mdata");
505 return rc;
506}
507
508static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd)
509{
510 struct cyttsp4_sysinfo *si = &cd->sysinfo;
511 int btn;
512 int num_defined_keys;
513 u16 *key_table;
514 void *p;
515 int rc = 0;
516
517 if (si->si_ofs.num_btns) {
518 si->si_ofs.btn_keys_size = si->si_ofs.num_btns *
519 sizeof(struct cyttsp4_btn);
520
521 p = krealloc(si->btn, si->si_ofs.btn_keys_size,
522 GFP_KERNEL|__GFP_ZERO);
523 if (p == NULL) {
524 dev_err(cd->dev, "%s: %s\n", __func__,
525 "fail alloc btn_keys memory");
526 return -ENOMEM;
527 }
528 si->btn = p;
529
530 if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS] == NULL)
531 num_defined_keys = 0;
532 else if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS]->data == NULL)
533 num_defined_keys = 0;
534 else
535 num_defined_keys = cd->cpdata->sett
536 [CY_IC_GRPNUM_BTN_KEYS]->size;
537
538 for (btn = 0; btn < si->si_ofs.num_btns &&
539 btn < num_defined_keys; btn++) {
540 key_table = (u16 *)cd->cpdata->sett
541 [CY_IC_GRPNUM_BTN_KEYS]->data;
542 si->btn[btn].key_code = key_table[btn];
543 si->btn[btn].state = CY_BTN_RELEASED;
544 si->btn[btn].enabled = true;
545 }
546 for (; btn < si->si_ofs.num_btns; btn++) {
547 si->btn[btn].key_code = KEY_RESERVED;
548 si->btn[btn].state = CY_BTN_RELEASED;
549 si->btn[btn].enabled = true;
550 }
551
552 return rc;
553 }
554
555 si->si_ofs.btn_keys_size = 0;
556 kfree(si->btn);
557 si->btn = NULL;
558 return rc;
559}
560
561static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd)
562{
563 struct cyttsp4_sysinfo *si = &cd->sysinfo;
564 void *p;
565
566 p = krealloc(si->xy_mode, si->si_ofs.mode_size, GFP_KERNEL|__GFP_ZERO);
567 if (p == NULL)
568 return -ENOMEM;
569 si->xy_mode = p;
570
571 p = krealloc(si->xy_data, si->si_ofs.data_size, GFP_KERNEL|__GFP_ZERO);
572 if (p == NULL)
573 return -ENOMEM;
574 si->xy_data = p;
575
576 p = krealloc(si->btn_rec_data,
577 si->si_ofs.btn_rec_size * si->si_ofs.num_btns,
578 GFP_KERNEL|__GFP_ZERO);
579 if (p == NULL)
580 return -ENOMEM;
581 si->btn_rec_data = p;
582
583 return 0;
584}
585
586static void cyttsp4_si_put_log_data(struct cyttsp4 *cd)
587{
588 struct cyttsp4_sysinfo *si = &cd->sysinfo;
589 dev_dbg(cd->dev, "%s: cydata_ofs =%4Zd siz=%4Zd\n", __func__,
590 si->si_ofs.cydata_ofs, si->si_ofs.cydata_size);
591 dev_dbg(cd->dev, "%s: test_ofs =%4Zd siz=%4Zd\n", __func__,
592 si->si_ofs.test_ofs, si->si_ofs.test_size);
593 dev_dbg(cd->dev, "%s: pcfg_ofs =%4Zd siz=%4Zd\n", __func__,
594 si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size);
595 dev_dbg(cd->dev, "%s: opcfg_ofs =%4Zd siz=%4Zd\n", __func__,
596 si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size);
597 dev_dbg(cd->dev, "%s: ddata_ofs =%4Zd siz=%4Zd\n", __func__,
598 si->si_ofs.ddata_ofs, si->si_ofs.ddata_size);
599 dev_dbg(cd->dev, "%s: mdata_ofs =%4Zd siz=%4Zd\n", __func__,
600 si->si_ofs.mdata_ofs, si->si_ofs.mdata_size);
601
602 dev_dbg(cd->dev, "%s: cmd_ofs =%4Zd\n", __func__,
603 si->si_ofs.cmd_ofs);
604 dev_dbg(cd->dev, "%s: rep_ofs =%4Zd\n", __func__,
605 si->si_ofs.rep_ofs);
606 dev_dbg(cd->dev, "%s: rep_sz =%4Zd\n", __func__,
607 si->si_ofs.rep_sz);
608 dev_dbg(cd->dev, "%s: num_btns =%4Zd\n", __func__,
609 si->si_ofs.num_btns);
610 dev_dbg(cd->dev, "%s: num_btn_regs =%4Zd\n", __func__,
611 si->si_ofs.num_btn_regs);
612 dev_dbg(cd->dev, "%s: tt_stat_ofs =%4Zd\n", __func__,
613 si->si_ofs.tt_stat_ofs);
614 dev_dbg(cd->dev, "%s: tch_rec_size =%4Zd\n", __func__,
615 si->si_ofs.tch_rec_size);
616 dev_dbg(cd->dev, "%s: max_tchs =%4Zd\n", __func__,
617 si->si_ofs.max_tchs);
618 dev_dbg(cd->dev, "%s: mode_size =%4Zd\n", __func__,
619 si->si_ofs.mode_size);
620 dev_dbg(cd->dev, "%s: data_size =%4Zd\n", __func__,
621 si->si_ofs.data_size);
622 dev_dbg(cd->dev, "%s: map_sz =%4Zd\n", __func__,
623 si->si_ofs.map_sz);
624
625 dev_dbg(cd->dev, "%s: btn_rec_size =%2Zd\n", __func__,
626 si->si_ofs.btn_rec_size);
627 dev_dbg(cd->dev, "%s: btn_diff_ofs =%2Zd\n", __func__,
628 si->si_ofs.btn_diff_ofs);
629 dev_dbg(cd->dev, "%s: btn_diff_size =%2Zd\n", __func__,
630 si->si_ofs.btn_diff_size);
631
632 dev_dbg(cd->dev, "%s: max_x = 0x%04ZX (%Zd)\n", __func__,
633 si->si_ofs.max_x, si->si_ofs.max_x);
634 dev_dbg(cd->dev, "%s: x_origin = %Zd (%s)\n", __func__,
635 si->si_ofs.x_origin,
636 si->si_ofs.x_origin == CY_NORMAL_ORIGIN ?
637 "left corner" : "right corner");
638 dev_dbg(cd->dev, "%s: max_y = 0x%04ZX (%Zd)\n", __func__,
639 si->si_ofs.max_y, si->si_ofs.max_y);
640 dev_dbg(cd->dev, "%s: y_origin = %Zd (%s)\n", __func__,
641 si->si_ofs.y_origin,
642 si->si_ofs.y_origin == CY_NORMAL_ORIGIN ?
643 "upper corner" : "lower corner");
644 dev_dbg(cd->dev, "%s: max_p = 0x%04ZX (%Zd)\n", __func__,
645 si->si_ofs.max_p, si->si_ofs.max_p);
646
647 dev_dbg(cd->dev, "%s: xy_mode=%p xy_data=%p\n", __func__,
648 si->xy_mode, si->xy_data);
649}
650
651static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd)
652{
653 struct cyttsp4_sysinfo *si = &cd->sysinfo;
654 int rc;
655
656 rc = cyttsp4_si_data_offsets(cd);
657 if (rc < 0)
658 return rc;
659
660 rc = cyttsp4_si_get_cydata(cd);
661 if (rc < 0)
662 return rc;
663
664 rc = cyttsp4_si_get_test_data(cd);
665 if (rc < 0)
666 return rc;
667
668 rc = cyttsp4_si_get_pcfg_data(cd);
669 if (rc < 0)
670 return rc;
671
672 rc = cyttsp4_si_get_opcfg_data(cd);
673 if (rc < 0)
674 return rc;
675
676 rc = cyttsp4_si_get_ddata(cd);
677 if (rc < 0)
678 return rc;
679
680 rc = cyttsp4_si_get_mdata(cd);
681 if (rc < 0)
682 return rc;
683
684 rc = cyttsp4_si_get_btn_data(cd);
685 if (rc < 0)
686 return rc;
687
688 rc = cyttsp4_si_get_op_data_ptrs(cd);
689 if (rc < 0) {
690 dev_err(cd->dev, "%s: failed to get_op_data\n",
691 __func__);
692 return rc;
693 }
694
695 cyttsp4_si_put_log_data(cd);
696
697 /* provide flow control handshake */
698 rc = cyttsp4_handshake(cd, si->si_data.hst_mode);
699 if (rc < 0)
700 dev_err(cd->dev, "%s: handshake fail on sysinfo reg\n",
701 __func__);
702
703 si->ready = true;
704 return rc;
705}
706
707static void cyttsp4_queue_startup_(struct cyttsp4 *cd)
708{
709 if (cd->startup_state == STARTUP_NONE) {
710 cd->startup_state = STARTUP_QUEUED;
711 schedule_work(&cd->startup_work);
712 dev_dbg(cd->dev, "%s: cyttsp4_startup queued\n", __func__);
713 } else {
714 dev_dbg(cd->dev, "%s: startup_state = %d\n", __func__,
715 cd->startup_state);
716 }
717}
718
719static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md,
720 int max_slots)
721{
722 int t;
723
724 if (md->num_prv_tch == 0)
725 return;
726
727 for (t = 0; t < max_slots; t++) {
728 input_mt_slot(md->input, t);
729 input_mt_report_slot_state(md->input,
730 MT_TOOL_FINGER, false);
731 }
732}
733
734static void cyttsp4_lift_all(struct cyttsp4_mt_data *md)
735{
736 if (!md->si)
737 return;
738
739 if (md->num_prv_tch != 0) {
740 cyttsp4_report_slot_liftoff(md,
741 md->si->si_ofs.tch_abs[CY_TCH_T].max);
742 input_sync(md->input);
743 md->num_prv_tch = 0;
744 }
745}
746
747static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md,
748 int *axis, int size, int max, u8 *xy_data, int bofs)
749{
750 int nbyte;
751 int next;
752
753 for (nbyte = 0, *axis = 0, next = 0; nbyte < size; nbyte++) {
754 dev_vdbg(&md->input->dev,
755 "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
756 " xy_data[%d]=%02X(%d) bofs=%d\n",
757 __func__, *axis, *axis, size, max, xy_data, next,
758 xy_data[next], xy_data[next], bofs);
759 *axis = (*axis * 256) + (xy_data[next] >> bofs);
760 next++;
761 }
762
763 *axis &= max - 1;
764
765 dev_vdbg(&md->input->dev,
766 "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
767 " xy_data[%d]=%02X(%d)\n",
768 __func__, *axis, *axis, size, max, xy_data, next,
769 xy_data[next], xy_data[next]);
770}
771
772static void cyttsp4_get_touch(struct cyttsp4_mt_data *md,
773 struct cyttsp4_touch *touch, u8 *xy_data)
774{
775 struct device *dev = &md->input->dev;
776 struct cyttsp4_sysinfo *si = md->si;
777 enum cyttsp4_tch_abs abs;
778 int tmp;
779 bool flipped;
780
781 for (abs = CY_TCH_X; abs < CY_TCH_NUM_ABS; abs++) {
782 cyttsp4_get_touch_axis(md, &touch->abs[abs],
783 si->si_ofs.tch_abs[abs].size,
784 si->si_ofs.tch_abs[abs].max,
785 xy_data + si->si_ofs.tch_abs[abs].ofs,
786 si->si_ofs.tch_abs[abs].bofs);
787 dev_vdbg(dev, "%s: get %s=%04X(%d)\n", __func__,
788 cyttsp4_tch_abs_string[abs],
789 touch->abs[abs], touch->abs[abs]);
790 }
791
792 if (md->pdata->flags & CY_FLAG_FLIP) {
793 tmp = touch->abs[CY_TCH_X];
794 touch->abs[CY_TCH_X] = touch->abs[CY_TCH_Y];
795 touch->abs[CY_TCH_Y] = tmp;
796 flipped = true;
797 } else
798 flipped = false;
799
800 if (md->pdata->flags & CY_FLAG_INV_X) {
801 if (flipped)
802 touch->abs[CY_TCH_X] = md->si->si_ofs.max_y -
803 touch->abs[CY_TCH_X];
804 else
805 touch->abs[CY_TCH_X] = md->si->si_ofs.max_x -
806 touch->abs[CY_TCH_X];
807 }
808 if (md->pdata->flags & CY_FLAG_INV_Y) {
809 if (flipped)
810 touch->abs[CY_TCH_Y] = md->si->si_ofs.max_x -
811 touch->abs[CY_TCH_Y];
812 else
813 touch->abs[CY_TCH_Y] = md->si->si_ofs.max_y -
814 touch->abs[CY_TCH_Y];
815 }
816
817 dev_vdbg(dev, "%s: flip=%s inv-x=%s inv-y=%s x=%04X(%d) y=%04X(%d)\n",
818 __func__, flipped ? "true" : "false",
819 md->pdata->flags & CY_FLAG_INV_X ? "true" : "false",
820 md->pdata->flags & CY_FLAG_INV_Y ? "true" : "false",
821 touch->abs[CY_TCH_X], touch->abs[CY_TCH_X],
822 touch->abs[CY_TCH_Y], touch->abs[CY_TCH_Y]);
823}
824
825static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids)
826{
827 int t;
828
829 for (t = 0; t < max_slots; t++) {
830 if (ids[t])
831 continue;
832 input_mt_slot(input, t);
833 input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
834 }
835
836 input_sync(input);
837}
838
839static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
840{
841 struct device *dev = &md->input->dev;
842 struct cyttsp4_sysinfo *si = md->si;
843 struct cyttsp4_touch tch;
844 int sig;
845 int i, j, t = 0;
846 int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
847
848 memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
849 for (i = 0; i < num_cur_tch; i++) {
850 cyttsp4_get_touch(md, &tch, si->xy_data +
851 (i * si->si_ofs.tch_rec_size));
852 if ((tch.abs[CY_TCH_T] < md->pdata->frmwrk->abs
853 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST]) ||
854 (tch.abs[CY_TCH_T] > md->pdata->frmwrk->abs
855 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MAX_OST])) {
856 dev_err(dev, "%s: tch=%d -> bad trk_id=%d max_id=%d\n",
857 __func__, i, tch.abs[CY_TCH_T],
858 md->pdata->frmwrk->abs[(CY_ABS_ID_OST *
859 CY_NUM_ABS_SET) + CY_MAX_OST]);
860 continue;
861 }
862
863 /* use 0 based track id's */
864 sig = md->pdata->frmwrk->abs
865 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + 0];
866 if (sig != CY_IGNORE_VALUE) {
867 t = tch.abs[CY_TCH_T] - md->pdata->frmwrk->abs
868 [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST];
869 if (tch.abs[CY_TCH_E] == CY_EV_LIFTOFF) {
870 dev_dbg(dev, "%s: t=%d e=%d lift-off\n",
871 __func__, t, tch.abs[CY_TCH_E]);
872 goto cyttsp4_get_mt_touches_pr_tch;
873 }
874 input_mt_slot(md->input, t);
875 input_mt_report_slot_state(md->input, MT_TOOL_FINGER,
876 true);
877 ids[t] = true;
878 }
879
880 /* all devices: position and pressure fields */
881 for (j = 0; j <= CY_ABS_W_OST; j++) {
882 sig = md->pdata->frmwrk->abs[((CY_ABS_X_OST + j) *
883 CY_NUM_ABS_SET) + 0];
884 if (sig != CY_IGNORE_VALUE)
885 input_report_abs(md->input, sig,
886 tch.abs[CY_TCH_X + j]);
887 }
888 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
889 /*
890 * TMA400 size and orientation fields:
891 * if pressure is non-zero and major touch
892 * signal is zero, then set major and minor touch
893 * signals to minimum non-zero value
894 */
895 if (tch.abs[CY_TCH_P] > 0 && tch.abs[CY_TCH_MAJ] == 0)
896 tch.abs[CY_TCH_MAJ] = tch.abs[CY_TCH_MIN] = 1;
897
898 /* Get the extended touch fields */
899 for (j = 0; j < CY_NUM_EXT_TCH_FIELDS; j++) {
900 sig = md->pdata->frmwrk->abs
901 [((CY_ABS_MAJ_OST + j) *
902 CY_NUM_ABS_SET) + 0];
903 if (sig != CY_IGNORE_VALUE)
904 input_report_abs(md->input, sig,
905 tch.abs[CY_TCH_MAJ + j]);
906 }
907 }
908
909cyttsp4_get_mt_touches_pr_tch:
910 if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE)
911 dev_dbg(dev,
912 "%s: t=%d x=%d y=%d z=%d M=%d m=%d o=%d e=%d\n",
913 __func__, t,
914 tch.abs[CY_TCH_X],
915 tch.abs[CY_TCH_Y],
916 tch.abs[CY_TCH_P],
917 tch.abs[CY_TCH_MAJ],
918 tch.abs[CY_TCH_MIN],
919 tch.abs[CY_TCH_OR],
920 tch.abs[CY_TCH_E]);
921 else
922 dev_dbg(dev,
923 "%s: t=%d x=%d y=%d z=%d e=%d\n", __func__,
924 t,
925 tch.abs[CY_TCH_X],
926 tch.abs[CY_TCH_Y],
927 tch.abs[CY_TCH_P],
928 tch.abs[CY_TCH_E]);
929 }
930
931 cyttsp4_final_sync(md->input, si->si_ofs.tch_abs[CY_TCH_T].max, ids);
932
933 md->num_prv_tch = num_cur_tch;
934
935 return;
936}
937
938/* read xy_data for all current touches */
939static int cyttsp4_xy_worker(struct cyttsp4 *cd)
940{
941 struct cyttsp4_mt_data *md = &cd->md;
942 struct device *dev = &md->input->dev;
943 struct cyttsp4_sysinfo *si = md->si;
944 u8 num_cur_tch;
945 u8 hst_mode;
946 u8 rep_len;
947 u8 rep_stat;
948 u8 tt_stat;
949 int rc = 0;
950
951 /*
952 * Get event data from cyttsp4 device.
953 * The event data includes all data
954 * for all active touches.
955 * Event data also includes button data
956 */
957 /*
958 * Use 2 reads:
959 * 1st read to get mode + button bytes + touch count (core)
960 * 2nd read (optional) to get touch 1 - touch n data
961 */
962 hst_mode = si->xy_mode[CY_REG_BASE];
963 rep_len = si->xy_mode[si->si_ofs.rep_ofs];
964 rep_stat = si->xy_mode[si->si_ofs.rep_ofs + 1];
965 tt_stat = si->xy_mode[si->si_ofs.tt_stat_ofs];
966 dev_vdbg(dev, "%s: %s%02X %s%d %s%02X %s%02X\n", __func__,
967 "hst_mode=", hst_mode, "rep_len=", rep_len,
968 "rep_stat=", rep_stat, "tt_stat=", tt_stat);
969
970 num_cur_tch = GET_NUM_TOUCHES(tt_stat);
971 dev_vdbg(dev, "%s: num_cur_tch=%d\n", __func__, num_cur_tch);
972
973 if (rep_len == 0 && num_cur_tch > 0) {
974 dev_err(dev, "%s: report length error rep_len=%d num_tch=%d\n",
975 __func__, rep_len, num_cur_tch);
976 goto cyttsp4_xy_worker_exit;
977 }
978
979 /* read touches */
980 if (num_cur_tch > 0) {
981 rc = cyttsp4_adap_read(cd, si->si_ofs.tt_stat_ofs + 1,
982 num_cur_tch * si->si_ofs.tch_rec_size,
983 si->xy_data);
984 if (rc < 0) {
985 dev_err(dev, "%s: read fail on touch regs r=%d\n",
986 __func__, rc);
987 goto cyttsp4_xy_worker_exit;
988 }
989 }
990
991 /* print xy data */
992 cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_data, num_cur_tch *
993 si->si_ofs.tch_rec_size, "xy_data");
994
995 /* check any error conditions */
996 if (IS_BAD_PKT(rep_stat)) {
997 dev_dbg(dev, "%s: Invalid buffer detected\n", __func__);
998 rc = 0;
999 goto cyttsp4_xy_worker_exit;
1000 }
1001
1002 if (IS_LARGE_AREA(tt_stat))
1003 dev_dbg(dev, "%s: Large area detected\n", __func__);
1004
1005 if (num_cur_tch > si->si_ofs.max_tchs) {
1006 dev_err(dev, "%s: too many tch; set to max tch (n=%d c=%Zd)\n",
1007 __func__, num_cur_tch, si->si_ofs.max_tchs);
1008 num_cur_tch = si->si_ofs.max_tchs;
1009 }
1010
1011 /* extract xy_data for all currently reported touches */
1012 dev_vdbg(dev, "%s: extract data num_cur_tch=%d\n", __func__,
1013 num_cur_tch);
1014 if (num_cur_tch)
1015 cyttsp4_get_mt_touches(md, num_cur_tch);
1016 else
1017 cyttsp4_lift_all(md);
1018
1019 rc = 0;
1020
1021cyttsp4_xy_worker_exit:
1022 return rc;
1023}
1024
1025static int cyttsp4_mt_attention(struct cyttsp4 *cd)
1026{
1027 struct device *dev = cd->dev;
1028 struct cyttsp4_mt_data *md = &cd->md;
1029 int rc = 0;
1030
1031 if (!md->si)
1032 return 0;
1033
1034 mutex_lock(&md->report_lock);
1035 if (!md->is_suspended) {
1036 /* core handles handshake */
1037 rc = cyttsp4_xy_worker(cd);
1038 } else {
1039 dev_vdbg(dev, "%s: Ignoring report while suspended\n",
1040 __func__);
1041 }
1042 mutex_unlock(&md->report_lock);
1043 if (rc < 0)
1044 dev_err(dev, "%s: xy_worker error r=%d\n", __func__, rc);
1045
1046 return rc;
1047}
1048
1049static irqreturn_t cyttsp4_irq(int irq, void *handle)
1050{
1051 struct cyttsp4 *cd = handle;
1052 struct device *dev = cd->dev;
1053 enum cyttsp4_mode cur_mode;
1054 u8 cmd_ofs = cd->sysinfo.si_ofs.cmd_ofs;
1055 u8 mode[3];
1056 int rc;
1057
1058 /*
1059 * Check whether this IRQ should be ignored (external)
1060 * This should be the very first thing to check since
1061 * ignore_irq may be set for a very short period of time
1062 */
1063 if (atomic_read(&cd->ignore_irq)) {
1064 dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
1065 return IRQ_HANDLED;
1066 }
1067
1068 dev_dbg(dev, "%s int:0x%x\n", __func__, cd->int_status);
1069
1070 mutex_lock(&cd->system_lock);
1071
1072 /* Just to debug */
1073 if (cd->sleep_state == SS_SLEEP_ON || cd->sleep_state == SS_SLEEPING)
1074 dev_vdbg(dev, "%s: Received IRQ while in sleep\n", __func__);
1075
1076 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), mode);
1077 if (rc) {
1078 dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
1079 goto cyttsp4_irq_exit;
1080 }
1081 dev_vdbg(dev, "%s mode[0-2]:0x%X 0x%X 0x%X\n", __func__,
1082 mode[0], mode[1], mode[2]);
1083
1084 if (IS_BOOTLOADER(mode[0], mode[1])) {
1085 cur_mode = CY_MODE_BOOTLOADER;
1086 dev_vdbg(dev, "%s: bl running\n", __func__);
1087 if (cd->mode == CY_MODE_BOOTLOADER) {
1088 /* Signal bootloader heartbeat heard */
1089 wake_up(&cd->wait_q);
1090 goto cyttsp4_irq_exit;
1091 }
1092
1093 /* switch to bootloader */
1094 dev_dbg(dev, "%s: restart switch to bl m=%d -> m=%d\n",
1095 __func__, cd->mode, cur_mode);
1096
1097 /* catch operation->bl glitch */
1098 if (cd->mode != CY_MODE_UNKNOWN) {
1099 /* Incase startup_state do not let startup_() */
1100 cd->mode = CY_MODE_UNKNOWN;
1101 cyttsp4_queue_startup_(cd);
1102 goto cyttsp4_irq_exit;
1103 }
1104
1105 /*
1106 * do not wake thread on this switch since
1107 * it is possible to get an early heartbeat
1108 * prior to performing the reset
1109 */
1110 cd->mode = cur_mode;
1111
1112 goto cyttsp4_irq_exit;
1113 }
1114
1115 switch (mode[0] & CY_HST_MODE) {
1116 case CY_HST_OPERATE:
1117 cur_mode = CY_MODE_OPERATIONAL;
1118 dev_vdbg(dev, "%s: operational\n", __func__);
1119 break;
1120 case CY_HST_CAT:
1121 cur_mode = CY_MODE_CAT;
1122 dev_vdbg(dev, "%s: CaT\n", __func__);
1123 break;
1124 case CY_HST_SYSINFO:
1125 cur_mode = CY_MODE_SYSINFO;
1126 dev_vdbg(dev, "%s: sysinfo\n", __func__);
1127 break;
1128 default:
1129 cur_mode = CY_MODE_UNKNOWN;
1130 dev_err(dev, "%s: unknown HST mode 0x%02X\n", __func__,
1131 mode[0]);
1132 break;
1133 }
1134
1135 /* Check whether this IRQ should be ignored (internal) */
1136 if (cd->int_status & CY_INT_IGNORE) {
1137 dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
1138 goto cyttsp4_irq_exit;
1139 }
1140
1141 /* Check for wake up interrupt */
1142 if (cd->int_status & CY_INT_AWAKE) {
1143 cd->int_status &= ~CY_INT_AWAKE;
1144 wake_up(&cd->wait_q);
1145 dev_vdbg(dev, "%s: Received wake up interrupt\n", __func__);
1146 goto cyttsp4_irq_handshake;
1147 }
1148
1149 /* Expecting mode change interrupt */
1150 if ((cd->int_status & CY_INT_MODE_CHANGE)
1151 && (mode[0] & CY_HST_MODE_CHANGE) == 0) {
1152 cd->int_status &= ~CY_INT_MODE_CHANGE;
1153 dev_dbg(dev, "%s: finish mode switch m=%d -> m=%d\n",
1154 __func__, cd->mode, cur_mode);
1155 cd->mode = cur_mode;
1156 wake_up(&cd->wait_q);
1157 goto cyttsp4_irq_handshake;
1158 }
1159
1160 /* compare current core mode to current device mode */
1161 dev_vdbg(dev, "%s: cd->mode=%d cur_mode=%d\n",
1162 __func__, cd->mode, cur_mode);
1163 if ((mode[0] & CY_HST_MODE_CHANGE) == 0 && cd->mode != cur_mode) {
1164 /* Unexpected mode change occurred */
1165 dev_err(dev, "%s %d->%d 0x%x\n", __func__, cd->mode,
1166 cur_mode, cd->int_status);
1167 dev_dbg(dev, "%s: Unexpected mode change, startup\n",
1168 __func__);
1169 cyttsp4_queue_startup_(cd);
1170 goto cyttsp4_irq_exit;
1171 }
1172
1173 /* Expecting command complete interrupt */
1174 dev_vdbg(dev, "%s: command byte:0x%x\n", __func__, mode[cmd_ofs]);
1175 if ((cd->int_status & CY_INT_EXEC_CMD)
1176 && mode[cmd_ofs] & CY_CMD_COMPLETE) {
1177 cd->int_status &= ~CY_INT_EXEC_CMD;
1178 dev_vdbg(dev, "%s: Received command complete interrupt\n",
1179 __func__);
1180 wake_up(&cd->wait_q);
1181 /*
1182 * It is possible to receive a single interrupt for
1183 * command complete and touch/button status report.
1184 * Continue processing for a possible status report.
1185 */
1186 }
1187
1188 /* This should be status report, read status regs */
1189 if (cd->mode == CY_MODE_OPERATIONAL) {
1190 dev_vdbg(dev, "%s: Read status registers\n", __func__);
1191 rc = cyttsp4_load_status_regs(cd);
1192 if (rc < 0)
1193 dev_err(dev, "%s: fail read mode regs r=%d\n",
1194 __func__, rc);
1195 }
1196
1197 cyttsp4_mt_attention(cd);
1198
1199cyttsp4_irq_handshake:
1200 /* handshake the event */
1201 dev_vdbg(dev, "%s: Handshake mode=0x%02X r=%d\n",
1202 __func__, mode[0], rc);
1203 rc = cyttsp4_handshake(cd, mode[0]);
1204 if (rc < 0)
1205 dev_err(dev, "%s: Fail handshake mode=0x%02X r=%d\n",
1206 __func__, mode[0], rc);
1207
1208 /*
1209 * a non-zero udelay period is required for using
1210 * IRQF_TRIGGER_LOW in order to delay until the
1211 * device completes isr deassert
1212 */
1213 udelay(cd->cpdata->level_irq_udelay);
1214
1215cyttsp4_irq_exit:
1216 mutex_unlock(&cd->system_lock);
1217 return IRQ_HANDLED;
1218}
1219
1220static void cyttsp4_start_wd_timer(struct cyttsp4 *cd)
1221{
1222 if (!CY_WATCHDOG_TIMEOUT)
1223 return;
1224
1225 mod_timer(&cd->watchdog_timer, jiffies +
1226 msecs_to_jiffies(CY_WATCHDOG_TIMEOUT));
1227}
1228
1229static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
1230{
1231 if (!CY_WATCHDOG_TIMEOUT)
1232 return;
1233
1234 /*
1235 * Ensure we wait until the watchdog timer
1236 * running on a different CPU finishes
1237 */
1238 del_timer_sync(&cd->watchdog_timer);
1239 cancel_work_sync(&cd->watchdog_work);
1240 del_timer_sync(&cd->watchdog_timer);
1241}
1242
1243static void cyttsp4_watchdog_timer(unsigned long handle)
1244{
1245 struct cyttsp4 *cd = (struct cyttsp4 *)handle;
1246
1247 dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
1248
1249 if (!cd)
1250 return;
1251
1252 if (!work_pending(&cd->watchdog_work))
1253 schedule_work(&cd->watchdog_work);
1254
1255 return;
1256}
1257
1258static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr,
1259 int timeout_ms)
1260{
1261 int t = msecs_to_jiffies(timeout_ms);
1262 bool with_timeout = (timeout_ms != 0);
1263
1264 mutex_lock(&cd->system_lock);
1265 if (!cd->exclusive_dev && cd->exclusive_waits == 0) {
1266 cd->exclusive_dev = ownptr;
1267 goto exit;
1268 }
1269
1270 cd->exclusive_waits++;
1271wait:
1272 mutex_unlock(&cd->system_lock);
1273 if (with_timeout) {
1274 t = wait_event_timeout(cd->wait_q, !cd->exclusive_dev, t);
1275 if (IS_TMO(t)) {
1276 dev_err(cd->dev, "%s: tmo waiting exclusive access\n",
1277 __func__);
1278 mutex_lock(&cd->system_lock);
1279 cd->exclusive_waits--;
1280 mutex_unlock(&cd->system_lock);
1281 return -ETIME;
1282 }
1283 } else {
1284 wait_event(cd->wait_q, !cd->exclusive_dev);
1285 }
1286 mutex_lock(&cd->system_lock);
1287 if (cd->exclusive_dev)
1288 goto wait;
1289 cd->exclusive_dev = ownptr;
1290 cd->exclusive_waits--;
1291exit:
1292 mutex_unlock(&cd->system_lock);
1293
1294 return 0;
1295}
1296
1297/*
1298 * returns error if was not owned
1299 */
1300static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr)
1301{
1302 mutex_lock(&cd->system_lock);
1303 if (cd->exclusive_dev != ownptr) {
1304 mutex_unlock(&cd->system_lock);
1305 return -EINVAL;
1306 }
1307
1308 dev_vdbg(cd->dev, "%s: exclusive_dev %p freed\n",
1309 __func__, cd->exclusive_dev);
1310 cd->exclusive_dev = NULL;
1311 wake_up(&cd->wait_q);
1312 mutex_unlock(&cd->system_lock);
1313 return 0;
1314}
1315
1316static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd)
1317{
1318 long t;
1319 int rc = 0;
1320
1321 /* wait heartbeat */
1322 dev_vdbg(cd->dev, "%s: wait heartbeat...\n", __func__);
1323 t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_BOOTLOADER,
1324 msecs_to_jiffies(CY_CORE_RESET_AND_WAIT_TIMEOUT));
1325 if (IS_TMO(t)) {
1326 dev_err(cd->dev, "%s: tmo waiting bl heartbeat cd->mode=%d\n",
1327 __func__, cd->mode);
1328 rc = -ETIME;
1329 }
1330
1331 return rc;
1332}
1333
1334static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd)
1335{
1336 long t;
1337
1338 dev_vdbg(cd->dev, "%s: wait sysinfo...\n", __func__);
1339
1340 t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_SYSINFO,
1341 msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
1342 if (IS_TMO(t)) {
1343 dev_err(cd->dev, "%s: tmo waiting exit bl cd->mode=%d\n",
1344 __func__, cd->mode);
1345 mutex_lock(&cd->system_lock);
1346 cd->int_status &= ~CY_INT_MODE_CHANGE;
1347 mutex_unlock(&cd->system_lock);
1348 return -ETIME;
1349 }
1350
1351 return 0;
1352}
1353
1354static int cyttsp4_reset_and_wait(struct cyttsp4 *cd)
1355{
1356 int rc;
1357
1358 /* reset hardware */
1359 mutex_lock(&cd->system_lock);
1360 dev_dbg(cd->dev, "%s: reset hw...\n", __func__);
1361 rc = cyttsp4_hw_reset(cd);
1362 cd->mode = CY_MODE_UNKNOWN;
1363 mutex_unlock(&cd->system_lock);
1364 if (rc < 0) {
1365 dev_err(cd->dev, "%s:Fail hw reset r=%d\n", __func__, rc);
1366 return rc;
1367 }
1368
1369 return cyttsp4_wait_bl_heartbeat(cd);
1370}
1371
1372/*
1373 * returns err if refused or timeout; block until mode change complete
1374 * bit is set (mode change interrupt)
1375 */
1376static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode)
1377{
1378 u8 new_dev_mode;
1379 u8 mode;
1380 long t;
1381 int rc;
1382
1383 switch (new_mode) {
1384 case CY_MODE_OPERATIONAL:
1385 new_dev_mode = CY_HST_OPERATE;
1386 break;
1387 case CY_MODE_SYSINFO:
1388 new_dev_mode = CY_HST_SYSINFO;
1389 break;
1390 case CY_MODE_CAT:
1391 new_dev_mode = CY_HST_CAT;
1392 break;
1393 default:
1394 dev_err(cd->dev, "%s: invalid mode: %02X(%d)\n",
1395 __func__, new_mode, new_mode);
1396 return -EINVAL;
1397 }
1398
1399 /* change mode */
1400 dev_dbg(cd->dev, "%s: %s=%p new_dev_mode=%02X new_mode=%d\n",
1401 __func__, "have exclusive", cd->exclusive_dev,
1402 new_dev_mode, new_mode);
1403
1404 mutex_lock(&cd->system_lock);
1405 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1406 if (rc < 0) {
1407 mutex_unlock(&cd->system_lock);
1408 dev_err(cd->dev, "%s: Fail read mode r=%d\n",
1409 __func__, rc);
1410 goto exit;
1411 }
1412
1413 /* Clear device mode bits and set to new mode */
1414 mode &= ~CY_HST_MODE;
1415 mode |= new_dev_mode | CY_HST_MODE_CHANGE;
1416
1417 cd->int_status |= CY_INT_MODE_CHANGE;
1418 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode), &mode);
1419 mutex_unlock(&cd->system_lock);
1420 if (rc < 0) {
1421 dev_err(cd->dev, "%s: Fail write mode change r=%d\n",
1422 __func__, rc);
1423 goto exit;
1424 }
1425
1426 /* wait for mode change done interrupt */
1427 t = wait_event_timeout(cd->wait_q,
1428 (cd->int_status & CY_INT_MODE_CHANGE) == 0,
1429 msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
1430 dev_dbg(cd->dev, "%s: back from wait t=%ld cd->mode=%d\n",
1431 __func__, t, cd->mode);
1432
1433 if (IS_TMO(t)) {
1434 dev_err(cd->dev, "%s: %s\n", __func__,
1435 "tmo waiting mode change");
1436 mutex_lock(&cd->system_lock);
1437 cd->int_status &= ~CY_INT_MODE_CHANGE;
1438 mutex_unlock(&cd->system_lock);
1439 rc = -EINVAL;
1440 }
1441
1442exit:
1443 return rc;
1444}
1445
1446static void cyttsp4_watchdog_work(struct work_struct *work)
1447{
1448 struct cyttsp4 *cd =
1449 container_of(work, struct cyttsp4, watchdog_work);
1450 u8 *mode;
1451 int retval;
1452
1453 if (cd == NULL) {
1454 dev_err(cd->dev, "%s: NULL context pointer\n", __func__);
1455 return;
1456 }
1457
1458 mutex_lock(&cd->system_lock);
1459 retval = cyttsp4_load_status_regs(cd);
1460 if (retval < 0) {
1461 dev_err(cd->dev,
1462 "%s: failed to access device in watchdog timer r=%d\n",
1463 __func__, retval);
1464 cyttsp4_queue_startup_(cd);
1465 goto cyttsp4_timer_watchdog_exit_error;
1466 }
1467 mode = &cd->sysinfo.xy_mode[CY_REG_BASE];
1468 if (IS_BOOTLOADER(mode[0], mode[1])) {
1469 dev_err(cd->dev,
1470 "%s: device found in bootloader mode when operational mode\n",
1471 __func__);
1472 cyttsp4_queue_startup_(cd);
1473 goto cyttsp4_timer_watchdog_exit_error;
1474 }
1475
1476 cyttsp4_start_wd_timer(cd);
1477cyttsp4_timer_watchdog_exit_error:
1478 mutex_unlock(&cd->system_lock);
1479 return;
1480}
1481
1482static int cyttsp4_core_sleep_(struct cyttsp4 *cd)
1483{
1484 enum cyttsp4_sleep_state ss = SS_SLEEP_ON;
1485 enum cyttsp4_int_state int_status = CY_INT_IGNORE;
1486 int rc = 0;
1487 u8 mode[2];
1488
1489 /* Already in sleep mode? */
1490 mutex_lock(&cd->system_lock);
1491 if (cd->sleep_state == SS_SLEEP_ON) {
1492 mutex_unlock(&cd->system_lock);
1493 return 0;
1494 }
1495 cd->sleep_state = SS_SLEEPING;
1496 mutex_unlock(&cd->system_lock);
1497
1498 cyttsp4_stop_wd_timer(cd);
1499
1500 /* Wait until currently running IRQ handler exits and disable IRQ */
1501 disable_irq(cd->irq);
1502
1503 dev_vdbg(cd->dev, "%s: write DEEP SLEEP...\n", __func__);
1504 mutex_lock(&cd->system_lock);
1505 rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1506 if (rc) {
1507 mutex_unlock(&cd->system_lock);
1508 dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
1509 goto error;
1510 }
1511
1512 if (IS_BOOTLOADER(mode[0], mode[1])) {
1513 mutex_unlock(&cd->system_lock);
1514 dev_err(cd->dev, "%s: Device in BOOTLADER mode.\n", __func__);
1515 rc = -EINVAL;
1516 goto error;
1517 }
1518
1519 mode[0] |= CY_HST_SLEEP;
1520 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode[0]), &mode[0]);
1521 mutex_unlock(&cd->system_lock);
1522 if (rc) {
1523 dev_err(cd->dev, "%s: Fail write adapter r=%d\n", __func__, rc);
1524 goto error;
1525 }
1526 dev_vdbg(cd->dev, "%s: write DEEP SLEEP succeeded\n", __func__);
1527
1528 if (cd->cpdata->power) {
1529 dev_dbg(cd->dev, "%s: Power down HW\n", __func__);
1530 rc = cd->cpdata->power(cd->cpdata, 0, cd->dev, &cd->ignore_irq);
1531 } else {
1532 dev_dbg(cd->dev, "%s: No power function\n", __func__);
1533 rc = 0;
1534 }
1535 if (rc < 0) {
1536 dev_err(cd->dev, "%s: HW Power down fails r=%d\n",
1537 __func__, rc);
1538 goto error;
1539 }
1540
1541 /* Give time to FW to sleep */
1542 msleep(50);
1543
1544 goto exit;
1545
1546error:
1547 ss = SS_SLEEP_OFF;
1548 int_status = CY_INT_NONE;
1549 cyttsp4_start_wd_timer(cd);
1550
1551exit:
1552 mutex_lock(&cd->system_lock);
1553 cd->sleep_state = ss;
1554 cd->int_status |= int_status;
1555 mutex_unlock(&cd->system_lock);
1556 enable_irq(cd->irq);
1557 return rc;
1558}
1559
1560static int cyttsp4_core_sleep(struct cyttsp4 *cd)
1561{
1562 int rc;
1563
1564 rc = cyttsp4_request_exclusive(cd, cd->dev,
1565 CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
1566 if (rc < 0) {
1567 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1568 __func__, cd->exclusive_dev, cd->dev);
1569 return 0;
1570 }
1571
1572 rc = cyttsp4_core_sleep_(cd);
1573
1574 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1575 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1576 else
1577 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1578
1579 return rc;
1580}
1581
1582static int cyttsp4_core_wake_(struct cyttsp4 *cd)
1583{
1584 struct device *dev = cd->dev;
1585 int rc;
1586 u8 mode;
1587 int t;
1588
1589 /* Already woken? */
1590 mutex_lock(&cd->system_lock);
1591 if (cd->sleep_state == SS_SLEEP_OFF) {
1592 mutex_unlock(&cd->system_lock);
1593 return 0;
1594 }
1595 cd->int_status &= ~CY_INT_IGNORE;
1596 cd->int_status |= CY_INT_AWAKE;
1597 cd->sleep_state = SS_WAKING;
1598
1599 if (cd->cpdata->power) {
1600 dev_dbg(dev, "%s: Power up HW\n", __func__);
1601 rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
1602 } else {
1603 dev_dbg(dev, "%s: No power function\n", __func__);
1604 rc = -ENOSYS;
1605 }
1606 if (rc < 0) {
1607 dev_err(dev, "%s: HW Power up fails r=%d\n",
1608 __func__, rc);
1609
1610 /* Initiate a read transaction to wake up */
1611 cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
1612 } else
1613 dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
1614 __func__);
1615 mutex_unlock(&cd->system_lock);
1616
1617 t = wait_event_timeout(cd->wait_q,
1618 (cd->int_status & CY_INT_AWAKE) == 0,
1619 msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
1620 if (IS_TMO(t)) {
1621 dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
1622 mutex_lock(&cd->system_lock);
1623 cd->int_status &= ~CY_INT_AWAKE;
1624 /* Try starting up */
1625 cyttsp4_queue_startup_(cd);
1626 mutex_unlock(&cd->system_lock);
1627 }
1628
1629 mutex_lock(&cd->system_lock);
1630 cd->sleep_state = SS_SLEEP_OFF;
1631 mutex_unlock(&cd->system_lock);
1632
1633 cyttsp4_start_wd_timer(cd);
1634
1635 return 0;
1636}
1637
1638static int cyttsp4_core_wake(struct cyttsp4 *cd)
1639{
1640 int rc;
1641
1642 rc = cyttsp4_request_exclusive(cd, cd->dev,
1643 CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
1644 if (rc < 0) {
1645 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1646 __func__, cd->exclusive_dev, cd->dev);
1647 return 0;
1648 }
1649
1650 rc = cyttsp4_core_wake_(cd);
1651
1652 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1653 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1654 else
1655 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1656
1657 return rc;
1658}
1659
1660static int cyttsp4_startup_(struct cyttsp4 *cd)
1661{
1662 int retry = CY_CORE_STARTUP_RETRY_COUNT;
1663 int rc;
1664
1665 cyttsp4_stop_wd_timer(cd);
1666
1667reset:
1668 if (retry != CY_CORE_STARTUP_RETRY_COUNT)
1669 dev_dbg(cd->dev, "%s: Retry %d\n", __func__,
1670 CY_CORE_STARTUP_RETRY_COUNT - retry);
1671
1672 /* reset hardware and wait for heartbeat */
1673 rc = cyttsp4_reset_and_wait(cd);
1674 if (rc < 0) {
1675 dev_err(cd->dev, "%s: Error on h/w reset r=%d\n", __func__, rc);
1676 if (retry--)
1677 goto reset;
1678 goto exit;
1679 }
1680
1681 /* exit bl into sysinfo mode */
1682 dev_vdbg(cd->dev, "%s: write exit ldr...\n", __func__);
1683 mutex_lock(&cd->system_lock);
1684 cd->int_status &= ~CY_INT_IGNORE;
1685 cd->int_status |= CY_INT_MODE_CHANGE;
1686
1687 rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(ldr_exit),
1688 (u8 *)ldr_exit);
1689 mutex_unlock(&cd->system_lock);
1690 if (rc < 0) {
1691 dev_err(cd->dev, "%s: Fail write r=%d\n", __func__, rc);
1692 if (retry--)
1693 goto reset;
1694 goto exit;
1695 }
1696
1697 rc = cyttsp4_wait_sysinfo_mode(cd);
1698 if (rc < 0) {
1699 u8 buf[sizeof(ldr_err_app)];
1700 int rc1;
1701
1702 /* Check for invalid/corrupted touch application */
1703 rc1 = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(ldr_err_app),
1704 buf);
1705 if (rc1) {
1706 dev_err(cd->dev, "%s: Fail read r=%d\n", __func__, rc1);
1707 } else if (!memcmp(buf, ldr_err_app, sizeof(ldr_err_app))) {
1708 dev_err(cd->dev, "%s: Error launching touch application\n",
1709 __func__);
1710 mutex_lock(&cd->system_lock);
1711 cd->invalid_touch_app = true;
1712 mutex_unlock(&cd->system_lock);
1713 goto exit_no_wd;
1714 }
1715
1716 if (retry--)
1717 goto reset;
1718 goto exit;
1719 }
1720
1721 mutex_lock(&cd->system_lock);
1722 cd->invalid_touch_app = false;
1723 mutex_unlock(&cd->system_lock);
1724
1725 /* read sysinfo data */
1726 dev_vdbg(cd->dev, "%s: get sysinfo regs..\n", __func__);
1727 rc = cyttsp4_get_sysinfo_regs(cd);
1728 if (rc < 0) {
1729 dev_err(cd->dev, "%s: failed to get sysinfo regs rc=%d\n",
1730 __func__, rc);
1731 if (retry--)
1732 goto reset;
1733 goto exit;
1734 }
1735
1736 rc = cyttsp4_set_mode(cd, CY_MODE_OPERATIONAL);
1737 if (rc < 0) {
1738 dev_err(cd->dev, "%s: failed to set mode to operational rc=%d\n",
1739 __func__, rc);
1740 if (retry--)
1741 goto reset;
1742 goto exit;
1743 }
1744
1745 cyttsp4_lift_all(&cd->md);
1746
1747 /* restore to sleep if was suspended */
1748 mutex_lock(&cd->system_lock);
1749 if (cd->sleep_state == SS_SLEEP_ON) {
1750 cd->sleep_state = SS_SLEEP_OFF;
1751 mutex_unlock(&cd->system_lock);
1752 cyttsp4_core_sleep_(cd);
1753 goto exit_no_wd;
1754 }
1755 mutex_unlock(&cd->system_lock);
1756
1757exit:
1758 cyttsp4_start_wd_timer(cd);
1759exit_no_wd:
1760 return rc;
1761}
1762
1763static int cyttsp4_startup(struct cyttsp4 *cd)
1764{
1765 int rc;
1766
1767 mutex_lock(&cd->system_lock);
1768 cd->startup_state = STARTUP_RUNNING;
1769 mutex_unlock(&cd->system_lock);
1770
1771 rc = cyttsp4_request_exclusive(cd, cd->dev,
1772 CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
1773 if (rc < 0) {
1774 dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
1775 __func__, cd->exclusive_dev, cd->dev);
1776 goto exit;
1777 }
1778
1779 rc = cyttsp4_startup_(cd);
1780
1781 if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
1782 /* Don't return fail code, mode is already changed. */
1783 dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
1784 else
1785 dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
1786
1787exit:
1788 mutex_lock(&cd->system_lock);
1789 cd->startup_state = STARTUP_NONE;
1790 mutex_unlock(&cd->system_lock);
1791
1792 /* Wake the waiters for end of startup */
1793 wake_up(&cd->wait_q);
1794
1795 return rc;
1796}
1797
1798static void cyttsp4_startup_work_function(struct work_struct *work)
1799{
1800 struct cyttsp4 *cd = container_of(work, struct cyttsp4, startup_work);
1801 int rc;
1802
1803 rc = cyttsp4_startup(cd);
1804 if (rc < 0)
1805 dev_err(cd->dev, "%s: Fail queued startup r=%d\n",
1806 __func__, rc);
1807}
1808
1809static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
1810{
1811 struct cyttsp4_sysinfo *si = &cd->sysinfo;
1812
1813 if (!si)
1814 return;
1815
1816 kfree(si->si_ptrs.cydata);
1817 kfree(si->si_ptrs.test);
1818 kfree(si->si_ptrs.pcfg);
1819 kfree(si->si_ptrs.opcfg);
1820 kfree(si->si_ptrs.ddata);
1821 kfree(si->si_ptrs.mdata);
1822 kfree(si->btn);
1823 kfree(si->xy_mode);
1824 kfree(si->xy_data);
1825 kfree(si->btn_rec_data);
1826}
1827
1828#if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM_RUNTIME)
1829static int cyttsp4_core_suspend(struct device *dev)
1830{
1831 struct cyttsp4 *cd = dev_get_drvdata(dev);
1832 struct cyttsp4_mt_data *md = &cd->md;
1833 int rc;
1834
1835 md->is_suspended = true;
1836
1837 rc = cyttsp4_core_sleep(cd);
1838 if (rc < 0) {
1839 dev_err(dev, "%s: Error on sleep\n", __func__);
1840 return -EAGAIN;
1841 }
1842 return 0;
1843}
1844
1845static int cyttsp4_core_resume(struct device *dev)
1846{
1847 struct cyttsp4 *cd = dev_get_drvdata(dev);
1848 struct cyttsp4_mt_data *md = &cd->md;
1849 int rc;
1850
1851 md->is_suspended = false;
1852
1853 rc = cyttsp4_core_wake(cd);
1854 if (rc < 0) {
1855 dev_err(dev, "%s: Error on wake\n", __func__);
1856 return -EAGAIN;
1857 }
1858
1859 return 0;
1860}
1861#endif
1862
1863const struct dev_pm_ops cyttsp4_pm_ops = {
1864 SET_SYSTEM_SLEEP_PM_OPS(cyttsp4_core_suspend, cyttsp4_core_resume)
1865 SET_RUNTIME_PM_OPS(cyttsp4_core_suspend, cyttsp4_core_resume, NULL)
1866};
1867EXPORT_SYMBOL_GPL(cyttsp4_pm_ops);
1868
1869static int cyttsp4_mt_open(struct input_dev *input)
1870{
1871 pm_runtime_get(input->dev.parent);
1872 return 0;
1873}
1874
1875static void cyttsp4_mt_close(struct input_dev *input)
1876{
1877 struct cyttsp4_mt_data *md = input_get_drvdata(input);
1878 mutex_lock(&md->report_lock);
1879 if (!md->is_suspended)
1880 pm_runtime_put(input->dev.parent);
1881 mutex_unlock(&md->report_lock);
1882}
1883
1884
1885static int cyttsp4_setup_input_device(struct cyttsp4 *cd)
1886{
1887 struct device *dev = cd->dev;
1888 struct cyttsp4_mt_data *md = &cd->md;
1889 int signal = CY_IGNORE_VALUE;
1890 int max_x, max_y, max_p, min, max;
1891 int max_x_tmp, max_y_tmp;
1892 int i;
1893 int rc;
1894
1895 dev_vdbg(dev, "%s: Initialize event signals\n", __func__);
1896 __set_bit(EV_ABS, md->input->evbit);
1897 __set_bit(EV_REL, md->input->evbit);
1898 __set_bit(EV_KEY, md->input->evbit);
1899
1900 max_x_tmp = md->si->si_ofs.max_x;
1901 max_y_tmp = md->si->si_ofs.max_y;
1902
1903 /* get maximum values from the sysinfo data */
1904 if (md->pdata->flags & CY_FLAG_FLIP) {
1905 max_x = max_y_tmp - 1;
1906 max_y = max_x_tmp - 1;
1907 } else {
1908 max_x = max_x_tmp - 1;
1909 max_y = max_y_tmp - 1;
1910 }
1911 max_p = md->si->si_ofs.max_p;
1912
1913 /* set event signal capabilities */
1914 for (i = 0; i < (md->pdata->frmwrk->size / CY_NUM_ABS_SET); i++) {
1915 signal = md->pdata->frmwrk->abs
1916 [(i * CY_NUM_ABS_SET) + CY_SIGNAL_OST];
1917 if (signal != CY_IGNORE_VALUE) {
1918 __set_bit(signal, md->input->absbit);
1919 min = md->pdata->frmwrk->abs
1920 [(i * CY_NUM_ABS_SET) + CY_MIN_OST];
1921 max = md->pdata->frmwrk->abs
1922 [(i * CY_NUM_ABS_SET) + CY_MAX_OST];
1923 if (i == CY_ABS_ID_OST) {
1924 /* shift track ids down to start at 0 */
1925 max = max - min;
1926 min = min - min;
1927 } else if (i == CY_ABS_X_OST)
1928 max = max_x;
1929 else if (i == CY_ABS_Y_OST)
1930 max = max_y;
1931 else if (i == CY_ABS_P_OST)
1932 max = max_p;
1933 input_set_abs_params(md->input, signal, min, max,
1934 md->pdata->frmwrk->abs
1935 [(i * CY_NUM_ABS_SET) + CY_FUZZ_OST],
1936 md->pdata->frmwrk->abs
1937 [(i * CY_NUM_ABS_SET) + CY_FLAT_OST]);
1938 dev_dbg(dev, "%s: register signal=%02X min=%d max=%d\n",
1939 __func__, signal, min, max);
1940 if ((i == CY_ABS_ID_OST) &&
1941 (md->si->si_ofs.tch_rec_size <
1942 CY_TMA4XX_TCH_REC_SIZE))
1943 break;
1944 }
1945 }
1946
1947 input_mt_init_slots(md->input, md->si->si_ofs.tch_abs[CY_TCH_T].max,
1948 INPUT_MT_DIRECT);
1949 rc = input_register_device(md->input);
1950 if (rc < 0)
1951 dev_err(dev, "%s: Error, failed register input device r=%d\n",
1952 __func__, rc);
1953 return rc;
1954}
1955
1956static int cyttsp4_mt_probe(struct cyttsp4 *cd)
1957{
1958 struct device *dev = cd->dev;
1959 struct cyttsp4_mt_data *md = &cd->md;
1960 struct cyttsp4_mt_platform_data *pdata = cd->pdata->mt_pdata;
1961 int rc = 0;
1962
1963 mutex_init(&md->report_lock);
1964 md->pdata = pdata;
1965 /* Create the input device and register it. */
1966 dev_vdbg(dev, "%s: Create the input device and register it\n",
1967 __func__);
1968 md->input = input_allocate_device();
1969 if (md->input == NULL) {
1970 dev_err(dev, "%s: Error, failed to allocate input device\n",
1971 __func__);
1972 rc = -ENOSYS;
1973 goto error_alloc_failed;
1974 }
1975
1976 md->input->name = pdata->inp_dev_name;
1977 scnprintf(md->phys, sizeof(md->phys)-1, "%s", dev_name(dev));
1978 md->input->phys = md->phys;
1979 md->input->id.bustype = cd->bus_ops->bustype;
1980 md->input->dev.parent = dev;
1981 md->input->open = cyttsp4_mt_open;
1982 md->input->close = cyttsp4_mt_close;
1983 input_set_drvdata(md->input, md);
1984
1985 /* get sysinfo */
1986 md->si = &cd->sysinfo;
1987 if (!md->si) {
1988 dev_err(dev, "%s: Fail get sysinfo pointer from core p=%p\n",
1989 __func__, md->si);
1990 goto error_get_sysinfo;
1991 }
1992
1993 rc = cyttsp4_setup_input_device(cd);
1994 if (rc)
1995 goto error_init_input;
1996
1997 return 0;
1998
1999error_init_input:
2000 input_free_device(md->input);
2001error_get_sysinfo:
2002 input_set_drvdata(md->input, NULL);
2003error_alloc_failed:
2004 dev_err(dev, "%s failed.\n", __func__);
2005 return rc;
2006}
2007
2008struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
2009 struct device *dev, u16 irq, size_t xfer_buf_size)
2010{
2011 struct cyttsp4 *cd;
2012 struct cyttsp4_platform_data *pdata = dev_get_platdata(dev);
2013 unsigned long irq_flags;
2014 int rc = 0;
2015
2016 if (!pdata || !pdata->core_pdata || !pdata->mt_pdata) {
2017 dev_err(dev, "%s: Missing platform data\n", __func__);
2018 rc = -ENODEV;
2019 goto error_no_pdata;
2020 }
2021
2022 cd = kzalloc(sizeof(*cd), GFP_KERNEL);
2023 if (!cd) {
2024 dev_err(dev, "%s: Error, kzalloc\n", __func__);
2025 rc = -ENOMEM;
2026 goto error_alloc_data;
2027 }
2028
2029 cd->xfer_buf = kzalloc(xfer_buf_size, GFP_KERNEL);
2030 if (!cd->xfer_buf) {
2031 dev_err(dev, "%s: Error, kzalloc\n", __func__);
2032 rc = -ENOMEM;
2033 goto error_alloc_data;
2034 }
2035
2036 /* Initialize device info */
2037 cd->dev = dev;
2038 cd->pdata = pdata;
2039 cd->cpdata = pdata->core_pdata;
2040 cd->bus_ops = ops;
2041
2042 /* Initialize mutexes and spinlocks */
2043 mutex_init(&cd->system_lock);
2044 mutex_init(&cd->adap_lock);
2045
2046 /* Initialize wait queue */
2047 init_waitqueue_head(&cd->wait_q);
2048
2049 /* Initialize works */
2050 INIT_WORK(&cd->startup_work, cyttsp4_startup_work_function);
2051 INIT_WORK(&cd->watchdog_work, cyttsp4_watchdog_work);
2052
2053 /* Initialize IRQ */
2054 cd->irq = gpio_to_irq(cd->cpdata->irq_gpio);
2055 if (cd->irq < 0) {
2056 rc = -EINVAL;
2057 goto error_gpio_irq;
2058 }
2059
2060 dev_set_drvdata(dev, cd);
2061
2062 /* Call platform init function */
2063 if (cd->cpdata->init) {
2064 dev_dbg(cd->dev, "%s: Init HW\n", __func__);
2065 rc = cd->cpdata->init(cd->cpdata, 1, cd->dev);
2066 } else {
2067 dev_dbg(cd->dev, "%s: No HW INIT function\n", __func__);
2068 rc = 0;
2069 }
2070 if (rc < 0)
2071 dev_err(cd->dev, "%s: HW Init fail r=%d\n", __func__, rc);
2072
2073 dev_dbg(dev, "%s: initialize threaded irq=%d\n", __func__, cd->irq);
2074 if (cd->cpdata->level_irq_udelay > 0)
2075 /* use level triggered interrupts */
2076 irq_flags = IRQF_TRIGGER_LOW | IRQF_ONESHOT;
2077 else
2078 /* use edge triggered interrupts */
2079 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
2080
2081 rc = request_threaded_irq(cd->irq, NULL, cyttsp4_irq, irq_flags,
2082 dev_name(dev), cd);
2083 if (rc < 0) {
2084 dev_err(dev, "%s: Error, could not request irq\n", __func__);
2085 goto error_request_irq;
2086 }
2087
2088 /* Setup watchdog timer */
2089 setup_timer(&cd->watchdog_timer, cyttsp4_watchdog_timer,
2090 (unsigned long)cd);
2091
2092 /*
2093 * call startup directly to ensure that the device
2094 * is tested before leaving the probe
2095 */
2096 rc = cyttsp4_startup(cd);
2097
2098 /* Do not fail probe if startup fails but the device is detected */
2099 if (rc < 0 && cd->mode == CY_MODE_UNKNOWN) {
2100 dev_err(cd->dev, "%s: Fail initial startup r=%d\n",
2101 __func__, rc);
2102 goto error_startup;
2103 }
2104
2105 rc = cyttsp4_mt_probe(cd);
2106 if (rc < 0) {
2107 dev_err(dev, "%s: Error, fail mt probe\n", __func__);
2108 goto error_startup;
2109 }
2110
2111 pm_runtime_enable(dev);
2112
2113 return cd;
2114
2115error_startup:
2116 cancel_work_sync(&cd->startup_work);
2117 cyttsp4_stop_wd_timer(cd);
2118 pm_runtime_disable(dev);
2119 cyttsp4_free_si_ptrs(cd);
2120 free_irq(cd->irq, cd);
2121error_request_irq:
2122 if (cd->cpdata->init)
2123 cd->cpdata->init(cd->cpdata, 0, dev);
2124 dev_set_drvdata(dev, NULL);
2125error_gpio_irq:
2126 kfree(cd);
2127error_alloc_data:
2128error_no_pdata:
2129 dev_err(dev, "%s failed.\n", __func__);
2130 return ERR_PTR(rc);
2131}
2132EXPORT_SYMBOL_GPL(cyttsp4_probe);
2133
2134static void cyttsp4_mt_release(struct cyttsp4_mt_data *md)
2135{
2136 input_unregister_device(md->input);
2137 input_set_drvdata(md->input, NULL);
2138}
2139
2140int cyttsp4_remove(struct cyttsp4 *cd)
2141{
2142 struct device *dev = cd->dev;
2143
2144 cyttsp4_mt_release(&cd->md);
2145
2146 /*
2147 * Suspend the device before freeing the startup_work and stopping
2148 * the watchdog since sleep function restarts watchdog on failure
2149 */
2150 pm_runtime_suspend(dev);
2151 pm_runtime_disable(dev);
2152
2153 cancel_work_sync(&cd->startup_work);
2154
2155 cyttsp4_stop_wd_timer(cd);
2156
2157 free_irq(cd->irq, cd);
2158 if (cd->cpdata->init)
2159 cd->cpdata->init(cd->cpdata, 0, dev);
2160 dev_set_drvdata(dev, NULL);
2161 cyttsp4_free_si_ptrs(cd);
2162 kfree(cd);
2163 return 0;
2164}
2165EXPORT_SYMBOL_GPL(cyttsp4_remove);
2166
2167MODULE_LICENSE("GPL");
2168MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen core driver");
2169MODULE_AUTHOR("Cypress");
diff --git a/drivers/input/touchscreen/cyttsp4_core.h b/drivers/input/touchscreen/cyttsp4_core.h
new file mode 100644
index 000000000000..86a254354136
--- /dev/null
+++ b/drivers/input/touchscreen/cyttsp4_core.h
@@ -0,0 +1,472 @@
1/*
2 * cyttsp4_core.h
3 * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
4 * For use with Cypress Txx4xx parts.
5 * Supported parts include:
6 * TMA4XX
7 * TMA1036
8 *
9 * Copyright (C) 2012 Cypress Semiconductor
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * version 2, and only version 2, as published by the
14 * Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
22 *
23 */
24
25#ifndef _LINUX_CYTTSP4_CORE_H
26#define _LINUX_CYTTSP4_CORE_H
27
28#include <linux/device.h>
29#include <linux/err.h>
30#include <linux/input.h>
31#include <linux/kernel.h>
32#include <linux/limits.h>
33#include <linux/module.h>
34#include <linux/stringify.h>
35#include <linux/types.h>
36#include <linux/platform_data/cyttsp4.h>
37
38#define CY_REG_BASE 0x00
39
40#define CY_POST_CODEL_WDG_RST 0x01
41#define CY_POST_CODEL_CFG_DATA_CRC_FAIL 0x02
42#define CY_POST_CODEL_PANEL_TEST_FAIL 0x04
43
44#define CY_NUM_BTN_PER_REG 4
45
46/* touch record system information offset masks and shifts */
47#define CY_BYTE_OFS_MASK 0x1F
48#define CY_BOFS_MASK 0xE0
49#define CY_BOFS_SHIFT 5
50
51#define CY_TMA1036_TCH_REC_SIZE 6
52#define CY_TMA4XX_TCH_REC_SIZE 9
53#define CY_TMA1036_MAX_TCH 0x0E
54#define CY_TMA4XX_MAX_TCH 0x1E
55
56#define CY_NORMAL_ORIGIN 0 /* upper, left corner */
57#define CY_INVERT_ORIGIN 1 /* lower, right corner */
58
59/* helpers */
60#define GET_NUM_TOUCHES(x) ((x) & 0x1F)
61#define IS_LARGE_AREA(x) ((x) & 0x20)
62#define IS_BAD_PKT(x) ((x) & 0x20)
63#define IS_BOOTLOADER(hst_mode, reset_detect) \
64 ((hst_mode) & 0x01 || (reset_detect) != 0)
65#define IS_TMO(t) ((t) == 0)
66
67
68enum cyttsp_cmd_bits {
69 CY_CMD_COMPLETE = (1 << 6),
70};
71
72/* Timeout in ms. */
73#define CY_WATCHDOG_TIMEOUT 1000
74
75#define CY_MAX_PRINT_SIZE 512
76#ifdef VERBOSE_DEBUG
77#define CY_MAX_PRBUF_SIZE PIPE_BUF
78#define CY_PR_TRUNCATED " truncated..."
79#endif
80
81enum cyttsp4_ic_grpnum {
82 CY_IC_GRPNUM_RESERVED,
83 CY_IC_GRPNUM_CMD_REGS,
84 CY_IC_GRPNUM_TCH_REP,
85 CY_IC_GRPNUM_DATA_REC,
86 CY_IC_GRPNUM_TEST_REC,
87 CY_IC_GRPNUM_PCFG_REC,
88 CY_IC_GRPNUM_TCH_PARM_VAL,
89 CY_IC_GRPNUM_TCH_PARM_SIZE,
90 CY_IC_GRPNUM_RESERVED1,
91 CY_IC_GRPNUM_RESERVED2,
92 CY_IC_GRPNUM_OPCFG_REC,
93 CY_IC_GRPNUM_DDATA_REC,
94 CY_IC_GRPNUM_MDATA_REC,
95 CY_IC_GRPNUM_TEST_REGS,
96 CY_IC_GRPNUM_BTN_KEYS,
97 CY_IC_GRPNUM_TTHE_REGS,
98 CY_IC_GRPNUM_NUM
99};
100
101enum cyttsp4_int_state {
102 CY_INT_NONE,
103 CY_INT_IGNORE = (1 << 0),
104 CY_INT_MODE_CHANGE = (1 << 1),
105 CY_INT_EXEC_CMD = (1 << 2),
106 CY_INT_AWAKE = (1 << 3),
107};
108
109enum cyttsp4_mode {
110 CY_MODE_UNKNOWN,
111 CY_MODE_BOOTLOADER = (1 << 1),
112 CY_MODE_OPERATIONAL = (1 << 2),
113 CY_MODE_SYSINFO = (1 << 3),
114 CY_MODE_CAT = (1 << 4),
115 CY_MODE_STARTUP = (1 << 5),
116 CY_MODE_LOADER = (1 << 6),
117 CY_MODE_CHANGE_MODE = (1 << 7),
118 CY_MODE_CHANGED = (1 << 8),
119 CY_MODE_CMD_COMPLETE = (1 << 9),
120};
121
122enum cyttsp4_sleep_state {
123 SS_SLEEP_OFF,
124 SS_SLEEP_ON,
125 SS_SLEEPING,
126 SS_WAKING,
127};
128
129enum cyttsp4_startup_state {
130 STARTUP_NONE,
131 STARTUP_QUEUED,
132 STARTUP_RUNNING,
133};
134
135#define CY_NUM_REVCTRL 8
136struct cyttsp4_cydata {
137 u8 ttpidh;
138 u8 ttpidl;
139 u8 fw_ver_major;
140 u8 fw_ver_minor;
141 u8 revctrl[CY_NUM_REVCTRL];
142 u8 blver_major;
143 u8 blver_minor;
144 u8 jtag_si_id3;
145 u8 jtag_si_id2;
146 u8 jtag_si_id1;
147 u8 jtag_si_id0;
148 u8 mfgid_sz;
149 u8 cyito_idh;
150 u8 cyito_idl;
151 u8 cyito_verh;
152 u8 cyito_verl;
153 u8 ttsp_ver_major;
154 u8 ttsp_ver_minor;
155 u8 device_info;
156 u8 mfg_id[];
157} __packed;
158
159struct cyttsp4_test {
160 u8 post_codeh;
161 u8 post_codel;
162} __packed;
163
164struct cyttsp4_pcfg {
165 u8 electrodes_x;
166 u8 electrodes_y;
167 u8 len_xh;
168 u8 len_xl;
169 u8 len_yh;
170 u8 len_yl;
171 u8 res_xh;
172 u8 res_xl;
173 u8 res_yh;
174 u8 res_yl;
175 u8 max_zh;
176 u8 max_zl;
177 u8 panel_info0;
178} __packed;
179
180struct cyttsp4_tch_rec_params {
181 u8 loc;
182 u8 size;
183} __packed;
184
185#define CY_NUM_TCH_FIELDS 7
186#define CY_NUM_EXT_TCH_FIELDS 3
187struct cyttsp4_opcfg {
188 u8 cmd_ofs;
189 u8 rep_ofs;
190 u8 rep_szh;
191 u8 rep_szl;
192 u8 num_btns;
193 u8 tt_stat_ofs;
194 u8 obj_cfg0;
195 u8 max_tchs;
196 u8 tch_rec_size;
197 struct cyttsp4_tch_rec_params tch_rec_old[CY_NUM_TCH_FIELDS];
198 u8 btn_rec_size; /* btn record size (in bytes) */
199 u8 btn_diff_ofs; /* btn data loc, diff counts */
200 u8 btn_diff_size; /* btn size of diff counts (in bits) */
201 struct cyttsp4_tch_rec_params tch_rec_new[CY_NUM_EXT_TCH_FIELDS];
202} __packed;
203
204struct cyttsp4_sysinfo_ptr {
205 struct cyttsp4_cydata *cydata;
206 struct cyttsp4_test *test;
207 struct cyttsp4_pcfg *pcfg;
208 struct cyttsp4_opcfg *opcfg;
209 struct cyttsp4_ddata *ddata;
210 struct cyttsp4_mdata *mdata;
211} __packed;
212
213struct cyttsp4_sysinfo_data {
214 u8 hst_mode;
215 u8 reserved;
216 u8 map_szh;
217 u8 map_szl;
218 u8 cydata_ofsh;
219 u8 cydata_ofsl;
220 u8 test_ofsh;
221 u8 test_ofsl;
222 u8 pcfg_ofsh;
223 u8 pcfg_ofsl;
224 u8 opcfg_ofsh;
225 u8 opcfg_ofsl;
226 u8 ddata_ofsh;
227 u8 ddata_ofsl;
228 u8 mdata_ofsh;
229 u8 mdata_ofsl;
230} __packed;
231
232enum cyttsp4_tch_abs { /* for ordering within the extracted touch data array */
233 CY_TCH_X, /* X */
234 CY_TCH_Y, /* Y */
235 CY_TCH_P, /* P (Z) */
236 CY_TCH_T, /* TOUCH ID */
237 CY_TCH_E, /* EVENT ID */
238 CY_TCH_O, /* OBJECT ID */
239 CY_TCH_W, /* SIZE */
240 CY_TCH_MAJ, /* TOUCH_MAJOR */
241 CY_TCH_MIN, /* TOUCH_MINOR */
242 CY_TCH_OR, /* ORIENTATION */
243 CY_TCH_NUM_ABS
244};
245
246static const char * const cyttsp4_tch_abs_string[] = {
247 [CY_TCH_X] = "X",
248 [CY_TCH_Y] = "Y",
249 [CY_TCH_P] = "P",
250 [CY_TCH_T] = "T",
251 [CY_TCH_E] = "E",
252 [CY_TCH_O] = "O",
253 [CY_TCH_W] = "W",
254 [CY_TCH_MAJ] = "MAJ",
255 [CY_TCH_MIN] = "MIN",
256 [CY_TCH_OR] = "OR",
257 [CY_TCH_NUM_ABS] = "INVALID"
258};
259
260struct cyttsp4_touch {
261 int abs[CY_TCH_NUM_ABS];
262};
263
264struct cyttsp4_tch_abs_params {
265 size_t ofs; /* abs byte offset */
266 size_t size; /* size in bits */
267 size_t max; /* max value */
268 size_t bofs; /* bit offset */
269};
270
271struct cyttsp4_sysinfo_ofs {
272 size_t chip_type;
273 size_t cmd_ofs;
274 size_t rep_ofs;
275 size_t rep_sz;
276 size_t num_btns;
277 size_t num_btn_regs; /* ceil(num_btns/4) */
278 size_t tt_stat_ofs;
279 size_t tch_rec_size;
280 size_t obj_cfg0;
281 size_t max_tchs;
282 size_t mode_size;
283 size_t data_size;
284 size_t map_sz;
285 size_t max_x;
286 size_t x_origin; /* left or right corner */
287 size_t max_y;
288 size_t y_origin; /* upper or lower corner */
289 size_t max_p;
290 size_t cydata_ofs;
291 size_t test_ofs;
292 size_t pcfg_ofs;
293 size_t opcfg_ofs;
294 size_t ddata_ofs;
295 size_t mdata_ofs;
296 size_t cydata_size;
297 size_t test_size;
298 size_t pcfg_size;
299 size_t opcfg_size;
300 size_t ddata_size;
301 size_t mdata_size;
302 size_t btn_keys_size;
303 struct cyttsp4_tch_abs_params tch_abs[CY_TCH_NUM_ABS];
304 size_t btn_rec_size; /* btn record size (in bytes) */
305 size_t btn_diff_ofs;/* btn data loc ,diff counts, (Op-Mode byte ofs) */
306 size_t btn_diff_size;/* btn size of diff counts (in bits) */
307};
308
309enum cyttsp4_btn_state {
310 CY_BTN_RELEASED,
311 CY_BTN_PRESSED,
312 CY_BTN_NUM_STATE
313};
314
315struct cyttsp4_btn {
316 bool enabled;
317 int state; /* CY_BTN_PRESSED, CY_BTN_RELEASED */
318 int key_code;
319};
320
321struct cyttsp4_sysinfo {
322 bool ready;
323 struct cyttsp4_sysinfo_data si_data;
324 struct cyttsp4_sysinfo_ptr si_ptrs;
325 struct cyttsp4_sysinfo_ofs si_ofs;
326 struct cyttsp4_btn *btn; /* button states */
327 u8 *btn_rec_data; /* button diff count data */
328 u8 *xy_mode; /* operational mode and status regs */
329 u8 *xy_data; /* operational touch regs */
330};
331
332struct cyttsp4_mt_data {
333 struct cyttsp4_mt_platform_data *pdata;
334 struct cyttsp4_sysinfo *si;
335 struct input_dev *input;
336 struct mutex report_lock;
337 bool is_suspended;
338 char phys[NAME_MAX];
339 int num_prv_tch;
340};
341
342struct cyttsp4 {
343 struct device *dev;
344 struct mutex system_lock;
345 struct mutex adap_lock;
346 enum cyttsp4_mode mode;
347 enum cyttsp4_sleep_state sleep_state;
348 enum cyttsp4_startup_state startup_state;
349 int int_status;
350 wait_queue_head_t wait_q;
351 int irq;
352 struct work_struct startup_work;
353 struct work_struct watchdog_work;
354 struct timer_list watchdog_timer;
355 struct cyttsp4_sysinfo sysinfo;
356 void *exclusive_dev;
357 int exclusive_waits;
358 atomic_t ignore_irq;
359 bool invalid_touch_app;
360 struct cyttsp4_mt_data md;
361 struct cyttsp4_platform_data *pdata;
362 struct cyttsp4_core_platform_data *cpdata;
363 const struct cyttsp4_bus_ops *bus_ops;
364 u8 *xfer_buf;
365#ifdef VERBOSE_DEBUG
366 u8 pr_buf[CY_MAX_PRBUF_SIZE];
367#endif
368};
369
370struct cyttsp4_bus_ops {
371 u16 bustype;
372 int (*write)(struct device *dev, u8 *xfer_buf, u8 addr, u8 length,
373 const void *values);
374 int (*read)(struct device *dev, u8 *xfer_buf, u8 addr, u8 length,
375 void *values);
376};
377
378enum cyttsp4_hst_mode_bits {
379 CY_HST_TOGGLE = (1 << 7),
380 CY_HST_MODE_CHANGE = (1 << 3),
381 CY_HST_MODE = (7 << 4),
382 CY_HST_OPERATE = (0 << 4),
383 CY_HST_SYSINFO = (1 << 4),
384 CY_HST_CAT = (2 << 4),
385 CY_HST_LOWPOW = (1 << 2),
386 CY_HST_SLEEP = (1 << 1),
387 CY_HST_RESET = (1 << 0),
388};
389
390/* abs settings */
391#define CY_IGNORE_VALUE 0xFFFF
392
393/* abs signal capabilities offsets in the frameworks array */
394enum cyttsp4_sig_caps {
395 CY_SIGNAL_OST,
396 CY_MIN_OST,
397 CY_MAX_OST,
398 CY_FUZZ_OST,
399 CY_FLAT_OST,
400 CY_NUM_ABS_SET /* number of signal capability fields */
401};
402
403/* abs axis signal offsets in the framworks array */
404enum cyttsp4_sig_ost {
405 CY_ABS_X_OST,
406 CY_ABS_Y_OST,
407 CY_ABS_P_OST,
408 CY_ABS_W_OST,
409 CY_ABS_ID_OST,
410 CY_ABS_MAJ_OST,
411 CY_ABS_MIN_OST,
412 CY_ABS_OR_OST,
413 CY_NUM_ABS_OST /* number of abs signals */
414};
415
416enum cyttsp4_flags {
417 CY_FLAG_NONE = 0x00,
418 CY_FLAG_HOVER = 0x04,
419 CY_FLAG_FLIP = 0x08,
420 CY_FLAG_INV_X = 0x10,
421 CY_FLAG_INV_Y = 0x20,
422 CY_FLAG_VKEYS = 0x40,
423};
424
425enum cyttsp4_object_id {
426 CY_OBJ_STANDARD_FINGER,
427 CY_OBJ_LARGE_OBJECT,
428 CY_OBJ_STYLUS,
429 CY_OBJ_HOVER,
430};
431
432enum cyttsp4_event_id {
433 CY_EV_NO_EVENT,
434 CY_EV_TOUCHDOWN,
435 CY_EV_MOVE, /* significant displacement (> act dist) */
436 CY_EV_LIFTOFF, /* record reports last position */
437};
438
439/* x-axis resolution of panel in pixels */
440#define CY_PCFG_RESOLUTION_X_MASK 0x7F
441
442/* y-axis resolution of panel in pixels */
443#define CY_PCFG_RESOLUTION_Y_MASK 0x7F
444
445/* x-axis, 0:origin is on left side of panel, 1: right */
446#define CY_PCFG_ORIGIN_X_MASK 0x80
447
448/* y-axis, 0:origin is on top side of panel, 1: bottom */
449#define CY_PCFG_ORIGIN_Y_MASK 0x80
450
451static inline int cyttsp4_adap_read(struct cyttsp4 *ts, u8 addr, int size,
452 void *buf)
453{
454 return ts->bus_ops->read(ts->dev, ts->xfer_buf, addr, size, buf);
455}
456
457static inline int cyttsp4_adap_write(struct cyttsp4 *ts, u8 addr, int size,
458 const void *buf)
459{
460 return ts->bus_ops->write(ts->dev, ts->xfer_buf, addr, size, buf);
461}
462
463extern struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
464 struct device *dev, u16 irq, size_t xfer_buf_size);
465extern int cyttsp4_remove(struct cyttsp4 *ts);
466int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u8 addr,
467 u8 length, const void *values);
468int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u8 addr,
469 u8 length, void *values);
470extern const struct dev_pm_ops cyttsp4_pm_ops;
471
472#endif /* _LINUX_CYTTSP4_CORE_H */
diff --git a/include/linux/platform_data/cyttsp4.h b/include/linux/platform_data/cyttsp4.h
new file mode 100644
index 000000000000..6eba54aff1dc
--- /dev/null
+++ b/include/linux/platform_data/cyttsp4.h
@@ -0,0 +1,76 @@
1/*
2 * Header file for:
3 * Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
4 * For use with Cypress Txx3xx parts.
5 * Supported parts include:
6 * CY8CTST341
7 * CY8CTMA340
8 *
9 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
10 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * version 2, and only version 2, as published by the
15 * Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License along
23 * with this program; if not, write to the Free Software Foundation, Inc.,
24 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
25 *
26 * Contact Cypress Semiconductor at www.cypress.com (kev@cypress.com)
27 *
28 */
29#ifndef _CYTTSP4_H_
30#define _CYTTSP4_H_
31
32#define CYTTSP4_MT_NAME "cyttsp4_mt"
33#define CYTTSP4_I2C_NAME "cyttsp4_i2c_adapter"
34#define CYTTSP4_SPI_NAME "cyttsp4_spi_adapter"
35
36#define CY_TOUCH_SETTINGS_MAX 32
37
38struct touch_framework {
39 const uint16_t *abs;
40 uint8_t size;
41 uint8_t enable_vkeys;
42} __packed;
43
44struct cyttsp4_mt_platform_data {
45 struct touch_framework *frmwrk;
46 unsigned short flags;
47 char const *inp_dev_name;
48};
49
50struct touch_settings {
51 const uint8_t *data;
52 uint32_t size;
53 uint8_t tag;
54} __packed;
55
56struct cyttsp4_core_platform_data {
57 int irq_gpio;
58 int rst_gpio;
59 int level_irq_udelay;
60 int (*xres)(struct cyttsp4_core_platform_data *pdata,
61 struct device *dev);
62 int (*init)(struct cyttsp4_core_platform_data *pdata,
63 int on, struct device *dev);
64 int (*power)(struct cyttsp4_core_platform_data *pdata,
65 int on, struct device *dev, atomic_t *ignore_irq);
66 int (*irq_stat)(struct cyttsp4_core_platform_data *pdata,
67 struct device *dev);
68 struct touch_settings *sett[CY_TOUCH_SETTINGS_MAX];
69};
70
71struct cyttsp4_platform_data {
72 struct cyttsp4_core_platform_data *core_pdata;
73 struct cyttsp4_mt_platform_data *mt_pdata;
74};
75
76#endif /* _CYTTSP4_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-29 14:39:12 -0500