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6fa3eb70 S |
1 | #include <linux/init.h> |
2 | #include <linux/module.h> | |
3 | #include <linux/delay.h> | |
4 | #include <linux/i2c.h> | |
5 | #include <linux/input.h> | |
6 | #include <linux/slab.h> | |
7 | #include <linux/gpio.h> | |
8 | #include <linux/sched.h> | |
9 | #include <linux/kthread.h> | |
10 | #include <linux/bitops.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/delay.h> | |
13 | #include <linux/byteorder/generic.h> | |
14 | #ifdef CONFIG_HAS_EARLYSUSPEND | |
15 | #include <linux/earlysuspend.h> | |
16 | #endif | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/time.h> | |
19 | #include <linux/rtpm_prio.h> | |
20 | #include <linux/dma-mapping.h> | |
21 | ||
22 | #include "tpd_custom_pixcir168.h" | |
23 | #include "tpd.h" | |
24 | #include <cust_eint.h> | |
25 | ||
26 | #ifndef TPD_NO_GPIO | |
27 | #include "cust_gpio_usage.h" | |
28 | #endif | |
29 | ||
30 | #define ABS(x) ((x<0)?-x:x) | |
31 | ||
32 | ||
33 | extern struct tpd_device *tpd; | |
34 | ||
35 | static int tpd_flag = 0; | |
36 | static int tpd_halt = 0; | |
37 | static u8 *I2CDMABuf_va = 0; | |
38 | static u32 I2CDMABuf_pa = 0; | |
39 | static struct task_struct *thread = NULL; | |
40 | static DECLARE_WAIT_QUEUE_HEAD(waiter); | |
41 | ||
42 | #ifdef TPD_HAVE_BUTTON | |
43 | static int tpd_keys_local[TPD_KEY_COUNT] = TPD_KEYS; | |
44 | static int tpd_keys_dim_local[TPD_KEY_COUNT][4] = TPD_KEYS_DIM; | |
45 | #endif | |
46 | #if (defined(TPD_WARP_START) && defined(TPD_WARP_END)) | |
47 | static int tpd_wb_start_local[TPD_WARP_CNT] = TPD_WARP_START; | |
48 | static int tpd_wb_end_local[TPD_WARP_CNT] = TPD_WARP_END; | |
49 | #endif | |
50 | #if (defined(TPD_HAVE_CALIBRATION) && !defined(TPD_CUSTOM_CALIBRATION)) | |
51 | //static int tpd_calmat_local[8] = TPD_CALIBRATION_MATRIX; | |
52 | static int tpd_def_calmat_local[8] = TPD_CALIBRATION_MATRIX; | |
53 | #endif | |
54 | ||
55 | static void tpd_eint_interrupt_handler(void); | |
56 | static int touch_event_handler(void *unused); | |
57 | static int tpd_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id); | |
58 | static int tpd_i2c_detect(struct i2c_client *client, struct i2c_board_info *info); | |
59 | static int tpd_i2c_remove(struct i2c_client *client); | |
60 | #if 0 | |
61 | extern void mt65xx_eint_unmask(unsigned int line); | |
62 | extern void mt65xx_eint_mask(unsigned int line); | |
63 | extern void mt65xx_eint_set_hw_debounce(kal_uint8 eintno, kal_uint32 ms); | |
64 | extern kal_uint32 mt65xx_eint_set_sens(kal_uint8 eintno, kal_bool sens); | |
65 | extern void mt65xx_eint_registration(kal_uint8 eintno, kal_bool Dbounce_En, | |
66 | kal_bool ACT_Polarity, void (EINT_FUNC_PTR)(void), | |
67 | kal_bool auto_umask); | |
68 | #endif | |
69 | static struct i2c_client *i2c_client = NULL; | |
70 | static const struct i2c_device_id tpd_i2c_id[] = {{"mtk-tpd",0},{}}; | |
71 | static unsigned short force[] = {0, 0xB8, I2C_CLIENT_END,I2C_CLIENT_END}; | |
72 | static const unsigned short * const forces[] = { force, NULL }; | |
73 | //static struct i2c_client_address_data addr_data = { .forces = forces,}; | |
74 | static struct i2c_board_info __initdata i2c_tpd = { I2C_BOARD_INFO("mtk-tpd", (0xB8>>1))}; | |
75 | ||
76 | ||
77 | struct i2c_driver tpd_i2c_driver = { | |
78 | .probe = tpd_i2c_probe, | |
79 | .remove = tpd_i2c_remove, | |
80 | .detect = tpd_i2c_detect, | |
81 | .driver.name = "mtk-tpd", | |
82 | .id_table = tpd_i2c_id, | |
83 | .address_list = (const unsigned short*) forces, | |
84 | }; | |
85 | ||
86 | static int tpd_i2c_detect(struct i2c_client *client, struct i2c_board_info *info) { | |
87 | strcpy(info->type, "mtk-tpd"); | |
88 | return 0; | |
89 | } | |
90 | ||
91 | /* | |
92 | static int tpd_i2c_write(struct i2c_client *client, const uint8_t *buf, int len) | |
93 | { | |
94 | int i = 0; | |
95 | for(i = 0 ; i < len; i++) | |
96 | { | |
97 | I2CDMABuf_va[i] = buf[i]; | |
98 | } | |
99 | ||
100 | if(len < 8) | |
101 | { | |
102 | client->addr = ( client->addr & I2C_MASK_FLAG ) | I2C_ENEXT_FLAG; | |
103 | return i2c_master_send(client, buf, len); | |
104 | } | |
105 | else | |
106 | { | |
107 | client->addr = client->addr & I2C_MASK_FLAG | I2C_DMA_FLAG | I2C_ENEXT_FLAG; | |
108 | return i2c_master_send(client, I2CDMABuf_pa, len); | |
109 | } | |
110 | } | |
111 | */ | |
112 | ||
113 | static int tpd_i2c_read(struct i2c_client *client, uint8_t *buf, int len) | |
114 | { | |
115 | int i = 0, ret = 0; | |
116 | ||
117 | if(len < 8) | |
118 | { | |
119 | client->addr = ( client->addr & I2C_MASK_FLAG ) | I2C_ENEXT_FLAG; | |
120 | return i2c_master_recv(client, buf, len); | |
121 | } | |
122 | else | |
123 | { | |
124 | client->addr = ( ( client->addr & I2C_MASK_FLAG ) | I2C_DMA_FLAG ) | I2C_ENEXT_FLAG; | |
125 | ret = i2c_master_recv(client, (u8 *)I2CDMABuf_pa, len); | |
126 | ||
127 | if(ret < 0) | |
128 | { | |
129 | return ret; | |
130 | } | |
131 | ||
132 | for(i = 0; i < len; i++) | |
133 | { | |
134 | buf[i] = I2CDMABuf_va[i]; | |
135 | } | |
136 | } | |
137 | return ret; | |
138 | } | |
139 | ||
140 | static int tpd_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { | |
141 | int err = 0;// ret = -1; | |
142 | ||
143 | #ifdef TPD_NO_GPIO | |
144 | u16 temp; | |
145 | temp = *(volatile u16 *) TPD_RESET_PIN_ADDR; | |
146 | temp = temp | 0x40; | |
147 | *(volatile u16 *) TPD_RESET_PIN_ADDR = temp; | |
148 | #endif | |
149 | i2c_client = client; | |
150 | ||
151 | printk("MediaTek touch panel i2c probe\n"); | |
152 | ||
153 | #ifndef TPD_NO_GPIO | |
154 | ||
155 | mt_set_gpio_mode(GPIO_CTP_RST_PIN, GPIO_CTP_RST_PIN_M_GPIO); | |
156 | mt_set_gpio_dir(GPIO_CTP_RST_PIN, GPIO_DIR_OUT); | |
157 | mt_set_gpio_out(GPIO_CTP_RST_PIN, GPIO_OUT_ZERO); | |
158 | msleep(10); | |
159 | mt_set_gpio_out(GPIO_CTP_RST_PIN, GPIO_OUT_ONE); | |
160 | ||
161 | mt_set_gpio_mode(GPIO_CTP_EINT_PIN, GPIO_CTP_EINT_PIN_M_EINT); | |
162 | mt_set_gpio_dir(GPIO_CTP_EINT_PIN, GPIO_DIR_IN); | |
163 | mt_set_gpio_pull_enable(GPIO_CTP_EINT_PIN, GPIO_PULL_ENABLE); | |
164 | mt_set_gpio_pull_select(GPIO_CTP_EINT_PIN, GPIO_PULL_UP); | |
165 | #endif | |
166 | ||
167 | msleep(50); | |
168 | ||
169 | I2CDMABuf_va = (u8 *)dma_alloc_coherent(NULL, 4096, &I2CDMABuf_pa, GFP_KERNEL); | |
170 | if(!I2CDMABuf_va) | |
171 | { | |
172 | printk("Allocate Touch DMA I2C Buffer failed!\n"); | |
173 | return -1; | |
174 | } | |
175 | ||
176 | thread = kthread_run(touch_event_handler, 0, TPD_DEVICE); | |
177 | if (IS_ERR(thread)) { | |
178 | err = PTR_ERR(thread); | |
179 | TPD_DMESG(TPD_DEVICE " failed to create kernel thread: %d\n", err); | |
180 | } | |
181 | ||
182 | tpd_load_status = 1; | |
183 | ||
184 | //mt65xx_eint_set_sens(CUST_EINT_TOUCH_PANEL_NUM, CUST_EINT_TOUCH_PANEL_SENSITIVE); | |
185 | //mt65xx_eint_set_hw_debounce(CUST_EINT_TOUCH_PANEL_NUM, CUST_EINT_TOUCH_PANEL_DEBOUNCE_CN); | |
186 | mt_eint_registration(CUST_EINT_TOUCH_PANEL_NUM, CUST_EINT_TOUCH_PANEL_TYPE, tpd_eint_interrupt_handler, 1); | |
187 | mt_eint_unmask(CUST_EINT_TOUCH_PANEL_NUM); | |
188 | ||
189 | printk("MediaTek touch panel i2c probe success\n"); | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | void tpd_eint_interrupt_handler(void) | |
195 | { | |
196 | TPD_DEBUG_PRINT_INT; | |
197 | tpd_flag=1; | |
198 | wake_up_interruptible(&waiter); | |
199 | } | |
200 | ||
201 | static int tpd_i2c_remove(struct i2c_client *client) | |
202 | { | |
203 | if(I2CDMABuf_va) | |
204 | { | |
205 | dma_free_coherent(NULL, 4096, I2CDMABuf_va, I2CDMABuf_pa); | |
206 | I2CDMABuf_va = NULL; | |
207 | I2CDMABuf_pa = 0; | |
208 | } | |
209 | return 0; | |
210 | } | |
211 | ||
212 | void tpd_down(int raw_x, int raw_y, int x, int y, int p) { | |
213 | input_report_abs(tpd->dev, ABS_PRESSURE, 128); | |
214 | input_report_key(tpd->dev, BTN_TOUCH, 1); | |
215 | input_report_abs(tpd->dev, ABS_MT_TOUCH_MAJOR, 128); | |
216 | input_report_abs(tpd->dev, ABS_MT_WIDTH_MAJOR, 128); | |
217 | input_report_abs(tpd->dev, ABS_MT_POSITION_X, x); | |
218 | input_report_abs(tpd->dev, ABS_MT_POSITION_Y, y); | |
219 | input_mt_sync(tpd->dev); | |
220 | TPD_DEBUG("D[%4d %4d %4d]\n", x, y, p); | |
221 | TPD_EM_PRINT(raw_x, raw_y, x, y, p, 1); | |
222 | } | |
223 | ||
224 | void tpd_up(int raw_x, int raw_y, int x, int y, int p) { | |
225 | //input_report_abs(tpd->dev, ABS_PRESSURE, 0); | |
226 | input_report_key(tpd->dev, BTN_TOUCH, 0); | |
227 | //input_report_abs(tpd->dev, ABS_MT_TOUCH_MAJOR, 0); | |
228 | //input_report_abs(tpd->dev, ABS_MT_WIDTH_MAJOR, 0); | |
229 | //input_report_abs(tpd->dev, ABS_MT_POSITION_X, x); | |
230 | //input_report_abs(tpd->dev, ABS_MT_POSITION_Y, y); | |
231 | input_mt_sync(tpd->dev); | |
232 | TPD_DEBUG("U[%4d %4d %4d]\n", x, y, 0); | |
233 | TPD_EM_PRINT(raw_x, raw_y, x, y, p, 0); | |
234 | } | |
235 | ||
236 | static int touch_event_handler(void *unused) | |
237 | { | |
238 | struct sched_param param = { .sched_priority = RTPM_PRIO_TPD }; | |
239 | static int x1, y1, x2, y2, raw_x1, raw_y1, raw_x2, raw_y2; | |
240 | int temp_x1 = x1, temp_y1 = y1, temp_raw_x1 = raw_x1, temp_raw_y1 = raw_y1; | |
241 | int lastUp_x = 0, lastUp_y = 0; | |
242 | char buffer[10]; | |
243 | int ret = -1, touching, oldtouching;//int pending = 0 | |
244 | unsigned char Wrbuf[1] = {0}; | |
245 | ||
246 | sched_setscheduler(current, SCHED_RR, ¶m); | |
247 | do{ | |
248 | set_current_state(TASK_INTERRUPTIBLE); | |
249 | while (tpd_halt) {tpd_flag = 0; msleep(20);} | |
250 | wait_event_interruptible(waiter, tpd_flag != 0); | |
251 | tpd_flag = 0; | |
252 | TPD_DEBUG_SET_TIME; | |
253 | set_current_state(TASK_RUNNING); | |
254 | ||
255 | i2c_client->addr = ( i2c_client->addr & I2C_MASK_FLAG ) | I2C_ENEXT_FLAG; | |
256 | ret = i2c_master_send(i2c_client, Wrbuf, 1); | |
257 | if(ret != sizeof(Wrbuf)) | |
258 | { | |
259 | TPD_DEBUG("[mtk-tpd] i2c write communcate error: 0x%x\n", ret); | |
260 | continue; | |
261 | } | |
262 | i2c_client->addr = ( ( i2c_client->addr & I2C_MASK_FLAG ) | I2C_DMA_FLAG ) | I2C_ENEXT_FLAG; | |
263 | ret = tpd_i2c_read(i2c_client, buffer, 7); | |
264 | buffer[7] = buffer[8] = buffer[9] = 0; | |
265 | if (ret != 7)//sizeof(buffer) | |
266 | { | |
267 | TPD_DEBUG("[mtk-tpd] i2c read communcate error: 0x%x\n", ret); | |
268 | continue; | |
269 | } | |
270 | i2c_client->addr = i2c_client->addr & I2C_MASK_FLAG; | |
271 | ||
272 | touching = buffer[0]; | |
273 | if(touching > 0) | |
274 | { | |
275 | raw_x1 = x1 = ((buffer[3] << 8) | buffer[2]); | |
276 | raw_y1 = y1 = ((buffer[5] << 8) | buffer[4]); | |
277 | } | |
278 | if(touching > 1) | |
279 | { | |
280 | raw_x2 = x2 = ((buffer[7] << 8) | buffer[6]); | |
281 | raw_y2 = y2 = ((buffer[9] << 8) | buffer[8]); | |
282 | } | |
283 | oldtouching = buffer[1]; | |
284 | TPD_DEBUG("[mtk-tpd]:raw_x1:%d, raw_y1:%d, raw_x2:%d, raw_y2:%d\n", raw_x1, raw_y1, raw_x2, raw_y2); | |
285 | TPD_DEBUG("[mtk-tpd]:touch:%d, old_touch:%d\n", touching, oldtouching); | |
286 | switch(touching) | |
287 | { | |
288 | case 0: | |
289 | /* touching=0, oldtouching 0 is invalid */ | |
290 | if(oldtouching > 0) | |
291 | { | |
292 | //tpd_up(raw_y1, raw_x1, y1, x1, 0); | |
293 | //tpd_up(raw_x1, raw_y1, x1, y1, 0); | |
294 | lastUp_x = x1; | |
295 | lastUp_y = y1; | |
296 | } | |
297 | if(oldtouching > 1) | |
298 | { | |
299 | //tpd_up(raw_y2, raw_x2, y2, x2, 0); | |
300 | //tpd_up(raw_x2, raw_y2, x2, y2, 0); | |
301 | //lastUp_x = x1; | |
302 | //lastUp_y = y1; | |
303 | } | |
304 | tpd_up(lastUp_x, lastUp_y, lastUp_x, lastUp_y, 0); | |
305 | break; | |
306 | case 1: | |
307 | tpd_calibrate(&x1, &y1); | |
308 | //tpd_down(raw_y1, raw_x1, y1, x1, 1); | |
309 | tpd_down(raw_x1, raw_y1, x1, y1, 1); | |
310 | if(oldtouching == 2) | |
311 | { | |
312 | if(abs(x1 - x2) < 2 && abs(y1 - y2) < 2) // need to adjust. | |
313 | { | |
314 | //tpd_up(temp_raw_y1, temp_raw_x1, temp_y1, temp_x1, 0); | |
315 | ||
316 | //For ICS | |
317 | //tpd_up(temp_raw_x1, temp_raw_y1, temp_x1, temp_y1, 0); | |
318 | } | |
319 | else | |
320 | { | |
321 | //tpd_up(raw_y2, raw_x2, y2, x2, 0); | |
322 | ||
323 | //For ICS | |
324 | //tpd_up(raw_x2, raw_y2, x2, y2, 0); | |
325 | } | |
326 | } | |
327 | break; | |
328 | case 2: | |
329 | tpd_calibrate(&x1, &y1); | |
330 | //tpd_down(raw_y1, raw_x1, y1, x1, 1); | |
331 | tpd_down(raw_x1, raw_y1, x1, y1, 1); | |
332 | //tpd_calibrate(&x2, &y2); | |
333 | //tpd_down(raw_y2, raw_x2, y2, x2, 1); | |
334 | //tpd_down(raw_x2, raw_y2, x2, y2, 1); | |
335 | break; | |
336 | default: | |
337 | TPD_DEBUG("[mtk-tpd] invalid touch num: 0x%x\n", touching); | |
338 | continue; | |
339 | } | |
340 | temp_x1 = x1; | |
341 | temp_y1 = y1; | |
342 | temp_raw_x1 = raw_x1; | |
343 | temp_raw_y1 = raw_y1; | |
344 | input_sync(tpd->dev); | |
345 | ||
346 | } while (!kthread_should_stop()); | |
347 | return 0; | |
348 | } | |
349 | ||
350 | int tpd_local_init(void) | |
351 | { | |
352 | if(i2c_add_driver(&tpd_i2c_driver)!=0) | |
353 | { | |
354 | TPD_DMESG("unable to add i2c driver.\n"); | |
355 | return -1; | |
356 | } | |
357 | ||
358 | #ifdef TPD_HAVE_BUTTON | |
359 | tpd_button_setting(TPD_KEY_COUNT, tpd_keys_local, tpd_keys_dim_local);// initialize tpd button data | |
360 | #endif | |
361 | ||
362 | #if (defined(TPD_WARP_START) && defined(TPD_WARP_END)) | |
363 | TPD_DO_WARP = 1; | |
364 | memcpy(tpd_wb_start, tpd_wb_start_local, TPD_WARP_CNT*4); | |
365 | memcpy(tpd_wb_end, tpd_wb_start_local, TPD_WARP_CNT*4); | |
366 | #endif | |
367 | ||
368 | #if (defined(TPD_HAVE_CALIBRATION) && !defined(TPD_CUSTOM_CALIBRATION)) | |
369 | memcpy(tpd_calmat, tpd_def_calmat_local, 8*4); | |
370 | memcpy(tpd_def_calmat, tpd_def_calmat_local, 8*4); | |
371 | #endif | |
372 | TPD_DMESG("end %s, %d\n", __FUNCTION__, __LINE__); | |
373 | tpd_type_cap = 1; | |
374 | return 0; | |
375 | } | |
376 | ||
377 | /* Function to manage low power suspend */ | |
378 | //void tpd_suspend(struct i2c_client *client, pm_message_t message) | |
379 | static void tpd_suspend( struct early_suspend *h ) | |
380 | { | |
381 | int ret = 0; | |
382 | unsigned char Wrbuf[2] = {0x14, 0x02}; | |
383 | tpd_halt = 1; | |
384 | mt_eint_mask(CUST_EINT_TOUCH_PANEL_NUM); | |
385 | ||
386 | i2c_client->addr = ( i2c_client->addr & I2C_MASK_FLAG ) | I2C_ENEXT_FLAG; | |
387 | ret = i2c_master_send(i2c_client, Wrbuf, 2); | |
388 | if(ret != sizeof(Wrbuf)) | |
389 | { | |
390 | TPD_DEBUG("[mtk-tpd] i2c write communcate error during suspend: 0x%x\n", ret); | |
391 | } | |
392 | } | |
393 | ||
394 | /* Function to manage power-on resume */ | |
395 | //void tpd_resume(struct i2c_client *client) | |
396 | static void tpd_resume( struct early_suspend *h ) | |
397 | { | |
398 | int ret = 0; | |
399 | unsigned char Wrbuf[2] = {0x14, 0x00}; | |
400 | ||
401 | i2c_client->addr = ( i2c_client->addr & I2C_MASK_FLAG ) | I2C_ENEXT_FLAG; | |
402 | ret = i2c_master_send(i2c_client, Wrbuf, 2); | |
403 | if(ret != sizeof(Wrbuf)) | |
404 | { | |
405 | TPD_DEBUG("[mtk-tpd] i2c write communcate error during resume: 0x%x\n", ret); | |
406 | } | |
407 | mt_eint_unmask(CUST_EINT_TOUCH_PANEL_NUM); | |
408 | tpd_halt = 0; | |
409 | } | |
410 | ||
411 | static struct tpd_driver_t tpd_device_driver = { | |
412 | .tpd_device_name = "pixcir168", | |
413 | .tpd_local_init = tpd_local_init, | |
414 | .suspend = tpd_suspend, | |
415 | .resume = tpd_resume, | |
416 | #ifdef TPD_HAVE_BUTTON | |
417 | .tpd_have_button = 1, | |
418 | #else | |
419 | .tpd_have_button = 0, | |
420 | #endif | |
421 | }; | |
422 | /* called when loaded into kernel */ | |
423 | static int __init tpd_driver_init(void) | |
424 | { | |
425 | printk("MediaTek pixcir168 touch panel driver init\n"); | |
426 | i2c_register_board_info(0, &i2c_tpd, 1); | |
427 | if(tpd_driver_add(&tpd_device_driver) < 0) | |
428 | TPD_DMESG("add generic driver failed\n"); | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
433 | /* should never be called */ | |
434 | static void __exit tpd_driver_exit(void) { | |
435 | TPD_DMESG("MediaTek pixcir168 touch panel driver exit\n"); | |
436 | //input_unregister_device(tpd->dev); | |
437 | tpd_driver_remove(&tpd_device_driver); | |
438 | } | |
439 | ||
440 | module_init(tpd_driver_init); | |
441 | module_exit(tpd_driver_exit); | |
442 |