Lines Matching full:ts
202 /* Must be called with ts->lock held */
203 static void ads7846_stop(struct ads7846 *ts) in ads7846_stop() argument
205 if (!ts->disabled && !ts->suspended) { in ads7846_stop()
207 ts->stopped = true; in ads7846_stop()
209 wake_up(&ts->wait); in ads7846_stop()
210 disable_irq(ts->spi->irq); in ads7846_stop()
214 /* Must be called with ts->lock held */
215 static void ads7846_restart(struct ads7846 *ts) in ads7846_restart() argument
217 if (!ts->disabled && !ts->suspended) { in ads7846_restart()
219 ts->stopped = false; in ads7846_restart()
221 enable_irq(ts->spi->irq); in ads7846_restart()
225 /* Must be called with ts->lock held */
226 static void __ads7846_disable(struct ads7846 *ts) in __ads7846_disable() argument
228 ads7846_stop(ts); in __ads7846_disable()
229 regulator_disable(ts->reg); in __ads7846_disable()
237 /* Must be called with ts->lock held */
238 static void __ads7846_enable(struct ads7846 *ts) in __ads7846_enable() argument
242 error = regulator_enable(ts->reg); in __ads7846_enable()
244 dev_err(&ts->spi->dev, "Failed to enable supply: %d\n", error); in __ads7846_enable()
246 ads7846_restart(ts); in __ads7846_enable()
249 static void ads7846_disable(struct ads7846 *ts) in ads7846_disable() argument
251 mutex_lock(&ts->lock); in ads7846_disable()
253 if (!ts->disabled) { in ads7846_disable()
255 if (!ts->suspended) in ads7846_disable()
256 __ads7846_disable(ts); in ads7846_disable()
258 ts->disabled = true; in ads7846_disable()
261 mutex_unlock(&ts->lock); in ads7846_disable()
264 static void ads7846_enable(struct ads7846 *ts) in ads7846_enable() argument
266 mutex_lock(&ts->lock); in ads7846_enable()
268 if (ts->disabled) { in ads7846_enable()
270 ts->disabled = false; in ads7846_enable()
272 if (!ts->suspended) in ads7846_enable()
273 __ads7846_enable(ts); in ads7846_enable()
276 mutex_unlock(&ts->lock); in ads7846_enable()
315 struct ads7846 *ts = dev_get_drvdata(dev); in ads7846_read12_ser() local
326 if (ts->use_internal) { in ads7846_read12_ser()
336 req->xfer[1].delay.value = ts->vref_delay_usecs; in ads7846_read12_ser()
370 mutex_lock(&ts->lock); in ads7846_read12_ser()
371 ads7846_stop(ts); in ads7846_read12_ser()
373 ads7846_restart(ts); in ads7846_read12_ser()
374 mutex_unlock(&ts->lock); in ads7846_read12_ser()
390 struct ads7846 *ts = dev_get_drvdata(dev); in ads7845_read12_ser() local
406 mutex_lock(&ts->lock); in ads7845_read12_ser()
407 ads7846_stop(ts); in ads7845_read12_ser()
409 ads7846_restart(ts); in ads7845_read12_ser()
410 mutex_unlock(&ts->lock); in ads7845_read12_ser()
428 struct ads7846 *ts = dev_get_drvdata(dev); \
429 ssize_t v = ads7846_read12_ser(&ts->spi->dev, \
433 return sprintf(buf, "%u\n", adjust(ts, v)); \
443 static inline unsigned null_adjust(struct ads7846 *ts, ssize_t v) in null_adjust() argument
456 static inline unsigned vaux_adjust(struct ads7846 *ts, ssize_t v) in SHOW()
461 retval *= ts->vref_mv; in SHOW()
467 static inline unsigned vbatt_adjust(struct ads7846 *ts, ssize_t v) in vbatt_adjust() argument
469 unsigned retval = vaux_adjust(ts, v); in vbatt_adjust()
472 if (ts->model == 7846) in vbatt_adjust()
485 struct ads7846 *ts = dev_get_drvdata(dev); in SHOW() local
487 if (ts->model == 7843 && index < 2) /* in0, in1 */ in SHOW()
489 if (ts->model == 7845 && index != 2) /* in0 */ in SHOW()
509 static int ads784x_hwmon_register(struct spi_device *spi, struct ads7846 *ts) in ads784x_hwmon_register() argument
512 switch (ts->model) { in ads784x_hwmon_register()
514 if (!ts->vref_mv) { in ads784x_hwmon_register()
516 ts->vref_mv = 2500; in ads784x_hwmon_register()
517 ts->use_internal = true; in ads784x_hwmon_register()
522 if (!ts->vref_mv) { in ads784x_hwmon_register()
525 ts->model); in ads784x_hwmon_register()
531 ts->hwmon = hwmon_device_register_with_groups(&spi->dev, spi->modalias, in ads784x_hwmon_register()
532 ts, ads7846_attr_groups); in ads784x_hwmon_register()
534 return PTR_ERR_OR_ZERO(ts->hwmon); in ads784x_hwmon_register()
538 struct ads7846 *ts) in ads784x_hwmon_unregister() argument
540 if (ts->hwmon) in ads784x_hwmon_unregister()
541 hwmon_device_unregister(ts->hwmon); in ads784x_hwmon_unregister()
546 struct ads7846 *ts) in ads784x_hwmon_register() argument
552 struct ads7846 *ts) in ads784x_hwmon_unregister() argument
560 struct ads7846 *ts = dev_get_drvdata(dev); in ads7846_pen_down_show() local
562 return sprintf(buf, "%u\n", ts->pendown); in ads7846_pen_down_show()
570 struct ads7846 *ts = dev_get_drvdata(dev); in ads7846_disable_show() local
572 return sprintf(buf, "%u\n", ts->disabled); in ads7846_disable_show()
579 struct ads7846 *ts = dev_get_drvdata(dev); in ads7846_disable_store() local
588 ads7846_disable(ts); in ads7846_disable_store()
590 ads7846_enable(ts); in ads7846_disable_store()
609 static int get_pendown_state(struct ads7846 *ts) in get_pendown_state() argument
611 if (ts->get_pendown_state) in get_pendown_state()
612 return ts->get_pendown_state(); in get_pendown_state()
614 return !gpio_get_value(ts->gpio_pendown); in get_pendown_state()
623 struct ads7846 *ts = ads; in ads7846_debounce_filter() local
625 if (!ts->read_cnt || (abs(ts->last_read - *val) > ts->debounce_tol)) { in ads7846_debounce_filter()
627 ts->read_rep = 0; in ads7846_debounce_filter()
632 if (ts->read_cnt < ts->debounce_max) { in ads7846_debounce_filter()
633 ts->last_read = *val; in ads7846_debounce_filter()
634 ts->read_cnt++; in ads7846_debounce_filter()
643 ts->read_cnt = 0; in ads7846_debounce_filter()
647 if (++ts->read_rep > ts->debounce_rep) { in ads7846_debounce_filter()
652 ts->read_cnt = 0; in ads7846_debounce_filter()
653 ts->read_rep = 0; in ads7846_debounce_filter()
657 ts->read_cnt++; in ads7846_debounce_filter()
668 static int ads7846_get_value(struct ads7846 *ts, struct spi_message *m) in ads7846_get_value() argument
674 if (ts->model == 7845) { in ads7846_get_value()
696 static void ads7846_read_state(struct ads7846 *ts) in ads7846_read_state() argument
698 struct ads7846_packet *packet = ts->packet; in ads7846_read_state()
705 while (msg_idx < ts->msg_count) { in ads7846_read_state()
707 ts->wait_for_sync(); in ads7846_read_state()
709 m = &ts->msg[msg_idx]; in ads7846_read_state()
710 error = spi_sync(ts->spi, m); in ads7846_read_state()
712 dev_err(&ts->spi->dev, "spi_sync --> %d\n", error); in ads7846_read_state()
721 if (msg_idx < ts->msg_count - 1) { in ads7846_read_state()
723 val = ads7846_get_value(ts, m); in ads7846_read_state()
725 action = ts->filter(ts->filter_data, msg_idx, &val); in ads7846_read_state()
732 msg_idx = ts->msg_count - 1; in ads7846_read_state()
750 static void ads7846_report_state(struct ads7846 *ts) in ads7846_report_state() argument
752 struct ads7846_packet *packet = ts->packet; in ads7846_report_state()
761 if (ts->model == 7845) { in ads7846_report_state()
777 if (ts->model == 7843) { in ads7846_report_state()
778 Rt = ts->pressure_max / 2; in ads7846_report_state()
779 } else if (ts->model == 7845) { in ads7846_report_state()
780 if (get_pendown_state(ts)) in ads7846_report_state()
781 Rt = ts->pressure_max / 2; in ads7846_report_state()
784 dev_vdbg(&ts->spi->dev, "x/y: %d/%d, PD %d\n", x, y, Rt); in ads7846_report_state()
790 Rt *= ts->x_plate_ohms; in ads7846_report_state()
802 if (packet->tc.ignore || Rt > ts->pressure_max) { in ads7846_report_state()
803 dev_vdbg(&ts->spi->dev, "ignored %d pressure %d\n", in ads7846_report_state()
812 if (ts->penirq_recheck_delay_usecs) { in ads7846_report_state()
813 udelay(ts->penirq_recheck_delay_usecs); in ads7846_report_state()
814 if (!get_pendown_state(ts)) in ads7846_report_state()
828 struct input_dev *input = ts->input; in ads7846_report_state()
830 if (!ts->pendown) { in ads7846_report_state()
832 ts->pendown = true; in ads7846_report_state()
833 dev_vdbg(&ts->spi->dev, "DOWN\n"); in ads7846_report_state()
836 touchscreen_report_pos(input, &ts->core_prop, x, y, false); in ads7846_report_state()
837 input_report_abs(input, ABS_PRESSURE, ts->pressure_max - Rt); in ads7846_report_state()
840 dev_vdbg(&ts->spi->dev, "%4d/%4d/%4d\n", x, y, Rt); in ads7846_report_state()
846 struct ads7846 *ts = handle; in ads7846_hard_irq() local
848 return get_pendown_state(ts) ? IRQ_WAKE_THREAD : IRQ_HANDLED; in ads7846_hard_irq()
854 struct ads7846 *ts = handle; in ads7846_irq() local
859 while (!ts->stopped && get_pendown_state(ts)) { in ads7846_irq()
862 ads7846_read_state(ts); in ads7846_irq()
864 if (!ts->stopped) in ads7846_irq()
865 ads7846_report_state(ts); in ads7846_irq()
867 wait_event_timeout(ts->wait, ts->stopped, in ads7846_irq()
871 if (ts->pendown && !ts->stopped) { in ads7846_irq()
872 struct input_dev *input = ts->input; in ads7846_irq()
878 ts->pendown = false; in ads7846_irq()
879 dev_vdbg(&ts->spi->dev, "UP\n"); in ads7846_irq()
887 struct ads7846 *ts = dev_get_drvdata(dev); in ads7846_suspend() local
889 mutex_lock(&ts->lock); in ads7846_suspend()
891 if (!ts->suspended) { in ads7846_suspend()
893 if (!ts->disabled) in ads7846_suspend()
894 __ads7846_disable(ts); in ads7846_suspend()
896 if (device_may_wakeup(&ts->spi->dev)) in ads7846_suspend()
897 enable_irq_wake(ts->spi->irq); in ads7846_suspend()
899 ts->suspended = true; in ads7846_suspend()
902 mutex_unlock(&ts->lock); in ads7846_suspend()
909 struct ads7846 *ts = dev_get_drvdata(dev); in ads7846_resume() local
911 mutex_lock(&ts->lock); in ads7846_resume()
913 if (ts->suspended) { in ads7846_resume()
915 ts->suspended = false; in ads7846_resume()
917 if (device_may_wakeup(&ts->spi->dev)) in ads7846_resume()
918 disable_irq_wake(ts->spi->irq); in ads7846_resume()
920 if (!ts->disabled) in ads7846_resume()
921 __ads7846_enable(ts); in ads7846_resume()
924 mutex_unlock(&ts->lock); in ads7846_resume()
932 struct ads7846 *ts, in ads7846_setup_pendown() argument
944 ts->get_pendown_state = pdata->get_pendown_state; in ads7846_setup_pendown()
956 ts->gpio_pendown = pdata->gpio_pendown; in ads7846_setup_pendown()
973 static void ads7846_setup_spi_msg(struct ads7846 *ts, in ads7846_setup_spi_msg() argument
976 struct spi_message *m = &ts->msg[0]; in ads7846_setup_spi_msg()
977 struct spi_transfer *x = ts->xfer; in ads7846_setup_spi_msg()
978 struct ads7846_packet *packet = ts->packet; in ads7846_setup_spi_msg()
981 if (ts->model == 7873) { in ads7846_setup_spi_msg()
987 ts->model = 7846; in ads7846_setup_spi_msg()
991 ts->msg_count = 1; in ads7846_setup_spi_msg()
993 m->context = ts; in ads7846_setup_spi_msg()
995 if (ts->model == 7845) { in ads7846_setup_spi_msg()
1036 ts->msg_count++; in ads7846_setup_spi_msg()
1039 m->context = ts; in ads7846_setup_spi_msg()
1041 if (ts->model == 7845) { in ads7846_setup_spi_msg()
1081 if (ts->model == 7846) { in ads7846_setup_spi_msg()
1082 ts->msg_count++; in ads7846_setup_spi_msg()
1085 m->context = ts; in ads7846_setup_spi_msg()
1114 ts->msg_count++; in ads7846_setup_spi_msg()
1117 m->context = ts; in ads7846_setup_spi_msg()
1148 ts->msg_count++; in ads7846_setup_spi_msg()
1151 m->context = ts; in ads7846_setup_spi_msg()
1153 if (ts->model == 7845) { in ads7846_setup_spi_msg()
1267 struct ads7846 *ts; in ads7846_probe() local
1296 ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL); in ads7846_probe()
1299 if (!ts || !packet || !input_dev) { in ads7846_probe()
1304 spi_set_drvdata(spi, ts); in ads7846_probe()
1306 ts->packet = packet; in ads7846_probe()
1307 ts->spi = spi; in ads7846_probe()
1308 ts->input = input_dev; in ads7846_probe()
1310 mutex_init(&ts->lock); in ads7846_probe()
1311 init_waitqueue_head(&ts->wait); in ads7846_probe()
1322 ts->model = pdata->model ? : 7846; in ads7846_probe()
1323 ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100; in ads7846_probe()
1324 ts->x_plate_ohms = pdata->x_plate_ohms ? : 400; in ads7846_probe()
1325 ts->vref_mv = pdata->vref_mv; in ads7846_probe()
1329 err = pdata->filter_init(pdata, &ts->filter_data); in ads7846_probe()
1333 ts->filter = pdata->filter; in ads7846_probe()
1334 ts->filter_cleanup = pdata->filter_cleanup; in ads7846_probe()
1336 ts->debounce_max = pdata->debounce_max; in ads7846_probe()
1337 if (ts->debounce_max < 2) in ads7846_probe()
1338 ts->debounce_max = 2; in ads7846_probe()
1339 ts->debounce_tol = pdata->debounce_tol; in ads7846_probe()
1340 ts->debounce_rep = pdata->debounce_rep; in ads7846_probe()
1341 ts->filter = ads7846_debounce_filter; in ads7846_probe()
1342 ts->filter_data = ts; in ads7846_probe()
1344 ts->filter = ads7846_no_filter; in ads7846_probe()
1347 err = ads7846_setup_pendown(spi, ts, pdata); in ads7846_probe()
1352 ts->penirq_recheck_delay_usecs = in ads7846_probe()
1355 ts->wait_for_sync = pdata->wait_for_sync ? : null_wait_for_sync; in ads7846_probe()
1357 snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&spi->dev)); in ads7846_probe()
1358 snprintf(ts->name, sizeof(ts->name), "ADS%d Touchscreen", ts->model); in ads7846_probe()
1360 input_dev->name = ts->name; in ads7846_probe()
1361 input_dev->phys = ts->phys; in ads7846_probe()
1382 touchscreen_parse_properties(ts->input, false, &ts->core_prop); in ads7846_probe()
1383 ts->pressure_max = input_abs_get_max(input_dev, ABS_PRESSURE) ? : ~0; in ads7846_probe()
1389 if (!ts->core_prop.swap_x_y && pdata->swap_xy) { in ads7846_probe()
1391 ts->core_prop.swap_x_y = true; in ads7846_probe()
1394 ads7846_setup_spi_msg(ts, pdata); in ads7846_probe()
1396 ts->reg = regulator_get(&spi->dev, "vcc"); in ads7846_probe()
1397 if (IS_ERR(ts->reg)) { in ads7846_probe()
1398 err = PTR_ERR(ts->reg); in ads7846_probe()
1403 err = regulator_enable(ts->reg); in ads7846_probe()
1413 irq_flags, spi->dev.driver->name, ts); in ads7846_probe()
1420 irq_flags, spi->dev.driver->name, ts); in ads7846_probe()
1428 err = ads784x_hwmon_register(spi, ts); in ads7846_probe()
1438 if (ts->model == 7845) in ads7846_probe()
1465 ads784x_hwmon_unregister(spi, ts); in ads7846_probe()
1467 free_irq(spi->irq, ts); in ads7846_probe()
1469 regulator_disable(ts->reg); in ads7846_probe()
1471 regulator_put(ts->reg); in ads7846_probe()
1473 if (!ts->get_pendown_state) in ads7846_probe()
1474 gpio_free(ts->gpio_pendown); in ads7846_probe()
1476 if (ts->filter_cleanup) in ads7846_probe()
1477 ts->filter_cleanup(ts->filter_data); in ads7846_probe()
1481 kfree(ts); in ads7846_probe()
1487 struct ads7846 *ts = spi_get_drvdata(spi); in ads7846_remove() local
1491 ads7846_disable(ts); in ads7846_remove()
1492 free_irq(ts->spi->irq, ts); in ads7846_remove()
1494 input_unregister_device(ts->input); in ads7846_remove()
1496 ads784x_hwmon_unregister(spi, ts); in ads7846_remove()
1498 regulator_put(ts->reg); in ads7846_remove()
1500 if (!ts->get_pendown_state) { in ads7846_remove()
1505 gpio_free(ts->gpio_pendown); in ads7846_remove()
1508 if (ts->filter_cleanup) in ads7846_remove()
1509 ts->filter_cleanup(ts->filter_data); in ads7846_remove()
1511 kfree(ts->packet); in ads7846_remove()
1512 kfree(ts); in ads7846_remove()