Lines Matching +full:pendown +full:- +full:gpio +full:- +full:debounce
1 // SPDX-License-Identifier: GPL-2.0-only
10 * - corgi_ts.c
11 * Copyright (C) 2004-2005 Richard Purdie
12 * - omap_ts.[hc], ads7846.h, ts_osk.c
28 #include <linux/gpio/consumer.h>
39 * Support for ads7843 tested on Atmel at91sam926x-EK.
53 * note. The strength of filtering can be set in the board-* specific
76 * driver is used with DMA-based SPI controllers (like atmel_spi) on
77 * systems where main memory is not DMA-coherent (most non-x86 boards).
118 bool pendown; member
152 /* leave chip selected when we're done, for quicker re-select? */
159 /*--------------------------------------------------------------------------*/
169 #define ADS_A2A1A0_temp0 (0 << 4) /* non-differential */
170 #define ADS_A2A1A0_vbatt (2 << 4) /* non-differential */
171 #define ADS_A2A1A0_vaux (6 << 4) /* non-differential */
172 #define ADS_A2A1A0_temp1 (7 << 4) /* non-differential */
175 #define ADS_SER (1 << 2) /* non-differential */
182 #define MAX_12BIT ((1<<12)-1)
195 /* single-ended samples need to first power up reference voltage;
206 * Measure: X; Vref: X+, X-; IN: Y+
207 * Measure: Y; Vref: Y+, Y-; IN: X+
208 * Measure: Z1; Vref: Y+, X-; IN: X+
209 * Measure: Z2; Vref: Y+, X-; IN: Y-
221 if (ts->get_pendown_state) in get_pendown_state()
222 return ts->get_pendown_state(); in get_pendown_state()
224 return gpiod_get_value(ts->gpio_pendown); in get_pendown_state()
229 struct input_dev *input = ts->input; in ads7846_report_pen_up()
235 ts->pendown = false; in ads7846_report_pen_up()
236 dev_vdbg(&ts->spi->dev, "UP\n"); in ads7846_report_pen_up()
239 /* Must be called with ts->lock held */
242 if (!ts->disabled && !ts->suspended) { in ads7846_stop()
244 ts->stopped = true; in ads7846_stop()
246 wake_up(&ts->wait); in ads7846_stop()
247 disable_irq(ts->spi->irq); in ads7846_stop()
251 /* Must be called with ts->lock held */
254 if (!ts->disabled && !ts->suspended) { in ads7846_restart()
256 if (ts->pendown && !get_pendown_state(ts)) in ads7846_restart()
260 ts->stopped = false; in ads7846_restart()
262 enable_irq(ts->spi->irq); in ads7846_restart()
266 /* Must be called with ts->lock held */
270 regulator_disable(ts->reg); in __ads7846_disable()
278 /* Must be called with ts->lock held */
283 error = regulator_enable(ts->reg); in __ads7846_enable()
285 dev_err(&ts->spi->dev, "Failed to enable supply: %d\n", error); in __ads7846_enable()
292 mutex_lock(&ts->lock); in ads7846_disable()
294 if (!ts->disabled) { in ads7846_disable()
296 if (!ts->suspended) in ads7846_disable()
299 ts->disabled = true; in ads7846_disable()
302 mutex_unlock(&ts->lock); in ads7846_disable()
307 mutex_lock(&ts->lock); in ads7846_enable()
309 if (ts->disabled) { in ads7846_enable()
311 ts->disabled = false; in ads7846_enable()
313 if (!ts->suspended) in ads7846_enable()
317 mutex_unlock(&ts->lock); in ads7846_enable()
320 /*--------------------------------------------------------------------------*/
323 * Non-touchscreen sensors only use single-ended conversions.
362 return -ENOMEM; in ads7846_read12_ser()
364 spi_message_init(&req->msg); in ads7846_read12_ser()
367 if (ts->use_internal) { in ads7846_read12_ser()
368 req->ref_on = REF_ON; in ads7846_read12_ser()
369 req->xfer[0].tx_buf = &req->ref_on; in ads7846_read12_ser()
370 req->xfer[0].len = 1; in ads7846_read12_ser()
371 spi_message_add_tail(&req->xfer[0], &req->msg); in ads7846_read12_ser()
373 req->xfer[1].rx_buf = &req->scratch; in ads7846_read12_ser()
374 req->xfer[1].len = 2; in ads7846_read12_ser()
377 req->xfer[1].delay.value = ts->vref_delay_usecs; in ads7846_read12_ser()
378 req->xfer[1].delay.unit = SPI_DELAY_UNIT_USECS; in ads7846_read12_ser()
379 spi_message_add_tail(&req->xfer[1], &req->msg); in ads7846_read12_ser()
389 req->command = (u8) command; in ads7846_read12_ser()
390 req->xfer[2].tx_buf = &req->command; in ads7846_read12_ser()
391 req->xfer[2].len = 1; in ads7846_read12_ser()
392 spi_message_add_tail(&req->xfer[2], &req->msg); in ads7846_read12_ser()
394 req->xfer[3].rx_buf = &req->sample; in ads7846_read12_ser()
395 req->xfer[3].len = 2; in ads7846_read12_ser()
396 spi_message_add_tail(&req->xfer[3], &req->msg); in ads7846_read12_ser()
401 req->ref_off = PWRDOWN; in ads7846_read12_ser()
402 req->xfer[4].tx_buf = &req->ref_off; in ads7846_read12_ser()
403 req->xfer[4].len = 1; in ads7846_read12_ser()
404 spi_message_add_tail(&req->xfer[4], &req->msg); in ads7846_read12_ser()
406 req->xfer[5].rx_buf = &req->scratch; in ads7846_read12_ser()
407 req->xfer[5].len = 2; in ads7846_read12_ser()
408 CS_CHANGE(req->xfer[5]); in ads7846_read12_ser()
409 spi_message_add_tail(&req->xfer[5], &req->msg); in ads7846_read12_ser()
411 mutex_lock(&ts->lock); in ads7846_read12_ser()
413 status = spi_sync(spi, &req->msg); in ads7846_read12_ser()
415 mutex_unlock(&ts->lock); in ads7846_read12_ser()
418 /* on-wire is a must-ignore bit, a BE12 value, then padding */ in ads7846_read12_ser()
419 status = be16_to_cpu(req->sample); in ads7846_read12_ser()
437 return -ENOMEM; in ads7845_read12_ser()
439 spi_message_init(&req->msg); in ads7845_read12_ser()
441 req->command[0] = (u8) command; in ads7845_read12_ser()
442 req->xfer[0].tx_buf = req->command; in ads7845_read12_ser()
443 req->xfer[0].rx_buf = req->sample; in ads7845_read12_ser()
444 req->xfer[0].len = 3; in ads7845_read12_ser()
445 spi_message_add_tail(&req->xfer[0], &req->msg); in ads7845_read12_ser()
447 mutex_lock(&ts->lock); in ads7845_read12_ser()
449 status = spi_sync(spi, &req->msg); in ads7845_read12_ser()
451 mutex_unlock(&ts->lock); in ads7845_read12_ser()
455 status = get_unaligned_be16(&req->sample[1]); in ads7845_read12_ser()
470 ssize_t v = ads7846_read12_ser(&ts->spi->dev, \
480 * ADS7846 could use the low-accuracy two-sample scheme, but can't do the high
502 retval *= ts->vref_mv; in SHOW()
513 if (ts->model == 7846) in vbatt_adjust()
528 if (ts->model == 7843 && index < 2) /* in0, in1 */ in SHOW()
530 if (ts->model == 7845 && index != 2) /* in0 */ in SHOW()
533 return attr->mode; in SHOW()
555 switch (ts->model) { in ads784x_hwmon_register()
557 if (!ts->vref_mv) { in ads784x_hwmon_register()
558 dev_dbg(&spi->dev, "assuming 2.5V internal vREF\n"); in ads784x_hwmon_register()
559 ts->vref_mv = 2500; in ads784x_hwmon_register()
560 ts->use_internal = true; in ads784x_hwmon_register()
565 if (!ts->vref_mv) { in ads784x_hwmon_register()
566 dev_warn(&spi->dev, in ads784x_hwmon_register()
568 ts->model); in ads784x_hwmon_register()
574 hwmon = devm_hwmon_device_register_with_groups(&spi->dev, in ads784x_hwmon_register()
575 spi->modalias, ts, in ads784x_hwmon_register()
594 return sprintf(buf, "%u\n", ts->pendown); in ads7846_pen_down_show()
604 return sprintf(buf, "%u\n", ts->disabled); in ads7846_disable_show()
636 /*--------------------------------------------------------------------------*/
642 if (!ts->read_cnt || (abs(ts->last_read - *val) > ts->debounce_tol)) { in ads7846_debounce_filter()
644 ts->read_rep = 0; in ads7846_debounce_filter()
649 if (ts->read_cnt < ts->debounce_max) { in ads7846_debounce_filter()
650 ts->last_read = *val; in ads7846_debounce_filter()
651 ts->read_cnt++; in ads7846_debounce_filter()
660 ts->read_cnt = 0; in ads7846_debounce_filter()
664 if (++ts->read_rep > ts->debounce_rep) { in ads7846_debounce_filter()
669 ts->read_cnt = 0; in ads7846_debounce_filter()
670 ts->read_rep = 0; in ads7846_debounce_filter()
674 ts->read_cnt++; in ads7846_debounce_filter()
689 value = be16_to_cpup(&buf->data); in ads7846_get_value()
698 struct ads7846_packet *packet = ts->packet; in ads7846_set_cmd_val()
702 packet->y = val; in ads7846_set_cmd_val()
705 packet->x = val; in ads7846_set_cmd_val()
708 packet->z1 = val; in ads7846_set_cmd_val()
711 packet->z2 = val; in ads7846_set_cmd_val()
759 struct ads7846_packet *packet = ts->packet; in ads7846_filter()
764 packet->ignore = false; in ads7846_filter()
765 for (cmd_idx = packet->last_cmd_idx; cmd_idx < packet->cmds - 1; cmd_idx++) { in ads7846_filter()
766 struct ads7846_buf_layout *l = &packet->l[cmd_idx]; in ads7846_filter()
768 packet->last_cmd_idx = cmd_idx; in ads7846_filter()
770 for (b = l->skip; b < l->count; b++) { in ads7846_filter()
771 val = ads7846_get_value(&packet->rx[l->offset + b]); in ads7846_filter()
773 action = ts->filter(ts->filter_data, cmd_idx, &val); in ads7846_filter()
775 if (b == l->count - 1) in ads7846_filter()
776 return -EAGAIN; in ads7846_filter()
781 packet->ignore = true; in ads7846_filter()
792 if (ts->wait_for_sync) { in ads7846_wait_for_hsync()
793 ts->wait_for_sync(); in ads7846_wait_for_hsync()
797 if (!ts->gpio_hsync) in ads7846_wait_for_hsync()
804 while (!gpiod_get_value(ts->gpio_hsync)) in ads7846_wait_for_hsync()
807 /* Then we wait for it do de-assert */ in ads7846_wait_for_hsync()
808 while (gpiod_get_value(ts->gpio_hsync)) in ads7846_wait_for_hsync()
814 struct ads7846_packet *packet = ts->packet; in ads7846_read_state()
819 packet->last_cmd_idx = 0; in ads7846_read_state()
824 m = &ts->msg[msg_idx]; in ads7846_read_state()
825 error = spi_sync(ts->spi, m); in ads7846_read_state()
827 dev_err_ratelimited(&ts->spi->dev, "spi_sync --> %d\n", error); in ads7846_read_state()
828 packet->ignore = true; in ads7846_read_state()
842 struct ads7846_packet *packet = ts->packet; in ads7846_report_state()
846 x = packet->x; in ads7846_report_state()
847 y = packet->y; in ads7846_report_state()
848 if (ts->model == 7845) { in ads7846_report_state()
852 z1 = packet->z1; in ads7846_report_state()
853 z2 = packet->z2; in ads7846_report_state()
860 if (ts->model == 7843 || ts->model == 7845) { in ads7846_report_state()
861 Rt = ts->pressure_max / 2; in ads7846_report_state()
865 Rt -= z1; in ads7846_report_state()
866 Rt *= ts->x_plate_ohms; in ads7846_report_state()
880 if (packet->ignore || Rt > ts->pressure_max) { in ads7846_report_state()
881 dev_vdbg(&ts->spi->dev, "ignored %d pressure %d\n", in ads7846_report_state()
882 packet->ignore, Rt); in ads7846_report_state()
887 * Maybe check the pendown state before reporting. This discards in ads7846_report_state()
890 if (ts->penirq_recheck_delay_usecs) { in ads7846_report_state()
891 udelay(ts->penirq_recheck_delay_usecs); in ads7846_report_state()
903 * timer by reading the pen signal state (it's a GPIO _and_ IRQ). in ads7846_report_state()
906 struct input_dev *input = ts->input; in ads7846_report_state()
908 if (!ts->pendown) { in ads7846_report_state()
910 ts->pendown = true; in ads7846_report_state()
911 dev_vdbg(&ts->spi->dev, "DOWN\n"); in ads7846_report_state()
914 touchscreen_report_pos(input, &ts->core_prop, x, y, false); in ads7846_report_state()
915 input_report_abs(input, ABS_PRESSURE, ts->pressure_max - Rt); in ads7846_report_state()
918 dev_vdbg(&ts->spi->dev, "%4d/%4d/%4d\n", x, y, Rt); in ads7846_report_state()
934 /* Start with a small delay before checking pendown state */ in ads7846_irq()
937 while (!ts->stopped && get_pendown_state(ts)) { in ads7846_irq()
942 if (!ts->stopped) in ads7846_irq()
945 wait_event_timeout(ts->wait, ts->stopped, in ads7846_irq()
949 if (ts->pendown && !ts->stopped) in ads7846_irq()
959 mutex_lock(&ts->lock); in ads7846_suspend()
961 if (!ts->suspended) { in ads7846_suspend()
963 if (!ts->disabled) in ads7846_suspend()
966 if (device_may_wakeup(&ts->spi->dev)) in ads7846_suspend()
967 enable_irq_wake(ts->spi->irq); in ads7846_suspend()
969 ts->suspended = true; in ads7846_suspend()
972 mutex_unlock(&ts->lock); in ads7846_suspend()
981 mutex_lock(&ts->lock); in ads7846_resume()
983 if (ts->suspended) { in ads7846_resume()
985 ts->suspended = false; in ads7846_resume()
987 if (device_may_wakeup(&ts->spi->dev)) in ads7846_resume()
988 disable_irq_wake(ts->spi->irq); in ads7846_resume()
990 if (!ts->disabled) in ads7846_resume()
994 mutex_unlock(&ts->lock); in ads7846_resume()
1006 * REVISIT when the irq can be triggered active-low, or if for some in ads7846_setup_pendown()
1008 * the pendown state. in ads7846_setup_pendown()
1011 if (pdata->get_pendown_state) { in ads7846_setup_pendown()
1012 ts->get_pendown_state = pdata->get_pendown_state; in ads7846_setup_pendown()
1014 ts->gpio_pendown = gpiod_get(&spi->dev, "pendown", GPIOD_IN); in ads7846_setup_pendown()
1015 if (IS_ERR(ts->gpio_pendown)) { in ads7846_setup_pendown()
1016 dev_err(&spi->dev, "failed to request pendown GPIO\n"); in ads7846_setup_pendown()
1017 return PTR_ERR(ts->gpio_pendown); in ads7846_setup_pendown()
1019 if (pdata->gpio_pendown_debounce) in ads7846_setup_pendown()
1020 gpiod_set_debounce(ts->gpio_pendown, in ads7846_setup_pendown()
1021 pdata->gpio_pendown_debounce); in ads7846_setup_pendown()
1034 struct spi_message *m = &ts->msg[0]; in ads7846_setup_spi_msg()
1035 struct spi_transfer *x = ts->xfer; in ads7846_setup_spi_msg()
1036 struct ads7846_packet *packet = ts->packet; in ads7846_setup_spi_msg()
1037 int vref = pdata->keep_vref_on; in ads7846_setup_spi_msg()
1044 time = NSEC_PER_SEC / ts->spi->max_speed_hz; in ads7846_setup_spi_msg()
1046 count = pdata->settle_delay_usecs * NSEC_PER_USEC / time; in ads7846_setup_spi_msg()
1047 packet->count_skip = DIV_ROUND_UP(count, 24); in ads7846_setup_spi_msg()
1049 if (ts->debounce_max && ts->debounce_rep) in ads7846_setup_spi_msg()
1050 /* ads7846_debounce_filter() is making ts->debounce_rep + 2 in ads7846_setup_spi_msg()
1052 packet->count = ts->debounce_rep + 2; in ads7846_setup_spi_msg()
1054 packet->count = 1; in ads7846_setup_spi_msg()
1056 if (ts->model == 7846) in ads7846_setup_spi_msg()
1057 packet->cmds = 5; /* x, y, z1, z2, pwdown */ in ads7846_setup_spi_msg()
1059 packet->cmds = 3; /* x, y, pwdown */ in ads7846_setup_spi_msg()
1061 for (cmd_idx = 0; cmd_idx < packet->cmds; cmd_idx++) { in ads7846_setup_spi_msg()
1062 struct ads7846_buf_layout *l = &packet->l[cmd_idx]; in ads7846_setup_spi_msg()
1065 if (cmd_idx == packet->cmds - 1) in ads7846_setup_spi_msg()
1069 max_count = packet->count + packet->count_skip; in ads7846_setup_spi_msg()
1071 max_count = packet->count; in ads7846_setup_spi_msg()
1073 l->offset = offset; in ads7846_setup_spi_msg()
1075 l->count = max_count; in ads7846_setup_spi_msg()
1076 l->skip = packet->count_skip; in ads7846_setup_spi_msg()
1077 size += sizeof(*packet->tx) * max_count; in ads7846_setup_spi_msg()
1080 packet->tx = devm_kzalloc(&ts->spi->dev, size, GFP_KERNEL); in ads7846_setup_spi_msg()
1081 if (!packet->tx) in ads7846_setup_spi_msg()
1082 return -ENOMEM; in ads7846_setup_spi_msg()
1084 packet->rx = devm_kzalloc(&ts->spi->dev, size, GFP_KERNEL); in ads7846_setup_spi_msg()
1085 if (!packet->rx) in ads7846_setup_spi_msg()
1086 return -ENOMEM; in ads7846_setup_spi_msg()
1088 if (ts->model == 7873) { in ads7846_setup_spi_msg()
1094 ts->model = 7846; in ads7846_setup_spi_msg()
1098 ts->msg_count = 1; in ads7846_setup_spi_msg()
1100 m->context = ts; in ads7846_setup_spi_msg()
1102 for (cmd_idx = 0; cmd_idx < packet->cmds; cmd_idx++) { in ads7846_setup_spi_msg()
1103 struct ads7846_buf_layout *l = &packet->l[cmd_idx]; in ads7846_setup_spi_msg()
1106 if (cmd_idx == packet->cmds - 1) in ads7846_setup_spi_msg()
1111 for (b = 0; b < l->count; b++) in ads7846_setup_spi_msg()
1112 packet->tx[l->offset + b].cmd = cmd; in ads7846_setup_spi_msg()
1115 x->tx_buf = packet->tx; in ads7846_setup_spi_msg()
1116 x->rx_buf = packet->rx; in ads7846_setup_spi_msg()
1117 x->len = size; in ads7846_setup_spi_msg()
1150 return ERR_PTR(-ENOMEM); in ads7846_get_props()
1152 pdata->model = (uintptr_t)device_get_match_data(dev); in ads7846_get_props()
1154 device_property_read_u16(dev, "ti,vref-delay-usecs", in ads7846_get_props()
1155 &pdata->vref_delay_usecs); in ads7846_get_props()
1156 device_property_read_u16(dev, "ti,vref-mv", &pdata->vref_mv); in ads7846_get_props()
1157 pdata->keep_vref_on = device_property_read_bool(dev, "ti,keep-vref-on"); in ads7846_get_props()
1159 pdata->swap_xy = device_property_read_bool(dev, "ti,swap-xy"); in ads7846_get_props()
1161 device_property_read_u16(dev, "ti,settle-delay-usec", in ads7846_get_props()
1162 &pdata->settle_delay_usecs); in ads7846_get_props()
1163 device_property_read_u16(dev, "ti,penirq-recheck-delay-usecs", in ads7846_get_props()
1164 &pdata->penirq_recheck_delay_usecs); in ads7846_get_props()
1166 device_property_read_u16(dev, "ti,x-plate-ohms", &pdata->x_plate_ohms); in ads7846_get_props()
1167 device_property_read_u16(dev, "ti,y-plate-ohms", &pdata->y_plate_ohms); in ads7846_get_props()
1169 device_property_read_u16(dev, "ti,x-min", &pdata->x_min); in ads7846_get_props()
1170 device_property_read_u16(dev, "ti,y-min", &pdata->y_min); in ads7846_get_props()
1171 device_property_read_u16(dev, "ti,x-max", &pdata->x_max); in ads7846_get_props()
1172 device_property_read_u16(dev, "ti,y-max", &pdata->y_max); in ads7846_get_props()
1175 * touchscreen-max-pressure gets parsed during in ads7846_get_props()
1178 device_property_read_u16(dev, "ti,pressure-min", &pdata->pressure_min); in ads7846_get_props()
1179 if (!device_property_read_u32(dev, "touchscreen-min-pressure", &value)) in ads7846_get_props()
1180 pdata->pressure_min = (u16) value; in ads7846_get_props()
1181 device_property_read_u16(dev, "ti,pressure-max", &pdata->pressure_max); in ads7846_get_props()
1183 device_property_read_u16(dev, "ti,debounce-max", &pdata->debounce_max); in ads7846_get_props()
1184 if (!device_property_read_u32(dev, "touchscreen-average-samples", &value)) in ads7846_get_props()
1185 pdata->debounce_max = (u16) value; in ads7846_get_props()
1186 device_property_read_u16(dev, "ti,debounce-tol", &pdata->debounce_tol); in ads7846_get_props()
1187 device_property_read_u16(dev, "ti,debounce-rep", &pdata->debounce_rep); in ads7846_get_props()
1189 device_property_read_u32(dev, "ti,pendown-gpio-debounce", in ads7846_get_props()
1190 &pdata->gpio_pendown_debounce); in ads7846_get_props()
1192 pdata->wakeup = device_property_read_bool(dev, "wakeup-source") || in ads7846_get_props()
1207 struct device *dev = &spi->dev; in ads7846_probe()
1213 if (!spi->irq) { in ads7846_probe()
1215 return -EINVAL; in ads7846_probe()
1219 if (spi->max_speed_hz > (125000 * SAMPLE_BITS)) { in ads7846_probe()
1221 (spi->max_speed_hz/SAMPLE_BITS)/1000); in ads7846_probe()
1222 return -EINVAL; in ads7846_probe()
1228 * may not. So we stick to very-portable 8 bit words, both RX and TX. in ads7846_probe()
1230 spi->bits_per_word = 8; in ads7846_probe()
1231 spi->mode &= ~SPI_MODE_X_MASK; in ads7846_probe()
1232 spi->mode |= SPI_MODE_0; in ads7846_probe()
1239 return -ENOMEM; in ads7846_probe()
1243 return -ENOMEM; in ads7846_probe()
1247 return -ENOMEM; in ads7846_probe()
1251 ts->packet = packet; in ads7846_probe()
1252 ts->spi = spi; in ads7846_probe()
1253 ts->input = input_dev; in ads7846_probe()
1255 mutex_init(&ts->lock); in ads7846_probe()
1256 init_waitqueue_head(&ts->wait); in ads7846_probe()
1265 ts->model = pdata->model ? : 7846; in ads7846_probe()
1266 ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100; in ads7846_probe()
1267 ts->x_plate_ohms = pdata->x_plate_ohms ? : 400; in ads7846_probe()
1268 ts->vref_mv = pdata->vref_mv; in ads7846_probe()
1270 if (pdata->debounce_max) { in ads7846_probe()
1271 ts->debounce_max = pdata->debounce_max; in ads7846_probe()
1272 if (ts->debounce_max < 2) in ads7846_probe()
1273 ts->debounce_max = 2; in ads7846_probe()
1274 ts->debounce_tol = pdata->debounce_tol; in ads7846_probe()
1275 ts->debounce_rep = pdata->debounce_rep; in ads7846_probe()
1276 ts->filter = ads7846_debounce_filter; in ads7846_probe()
1277 ts->filter_data = ts; in ads7846_probe()
1279 ts->filter = ads7846_no_filter; in ads7846_probe()
1286 if (pdata->penirq_recheck_delay_usecs) in ads7846_probe()
1287 ts->penirq_recheck_delay_usecs = in ads7846_probe()
1288 pdata->penirq_recheck_delay_usecs; in ads7846_probe()
1290 ts->wait_for_sync = pdata->wait_for_sync; in ads7846_probe()
1292 ts->gpio_hsync = devm_gpiod_get_optional(dev, "ti,hsync", GPIOD_IN); in ads7846_probe()
1293 if (IS_ERR(ts->gpio_hsync)) in ads7846_probe()
1294 return PTR_ERR(ts->gpio_hsync); in ads7846_probe()
1296 snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(dev)); in ads7846_probe()
1297 snprintf(ts->name, sizeof(ts->name), "ADS%d Touchscreen", ts->model); in ads7846_probe()
1299 input_dev->name = ts->name; in ads7846_probe()
1300 input_dev->phys = ts->phys; in ads7846_probe()
1302 input_dev->id.bustype = BUS_SPI; in ads7846_probe()
1303 input_dev->id.product = pdata->model; in ads7846_probe()
1307 pdata->x_min ? : 0, in ads7846_probe()
1308 pdata->x_max ? : MAX_12BIT, in ads7846_probe()
1311 pdata->y_min ? : 0, in ads7846_probe()
1312 pdata->y_max ? : MAX_12BIT, in ads7846_probe()
1314 if (ts->model != 7845) in ads7846_probe()
1316 pdata->pressure_min, pdata->pressure_max, 0, 0); in ads7846_probe()
1323 touchscreen_parse_properties(ts->input, false, &ts->core_prop); in ads7846_probe()
1324 ts->pressure_max = input_abs_get_max(input_dev, ABS_PRESSURE) ? : ~0; in ads7846_probe()
1327 * Check if legacy ti,swap-xy binding is used instead of in ads7846_probe()
1328 * touchscreen-swapped-x-y in ads7846_probe()
1330 if (!ts->core_prop.swap_x_y && pdata->swap_xy) { in ads7846_probe()
1331 swap(input_dev->absinfo[ABS_X], input_dev->absinfo[ABS_Y]); in ads7846_probe()
1332 ts->core_prop.swap_x_y = true; in ads7846_probe()
1337 ts->reg = devm_regulator_get(dev, "vcc"); in ads7846_probe()
1338 if (IS_ERR(ts->reg)) { in ads7846_probe()
1339 err = PTR_ERR(ts->reg); in ads7846_probe()
1344 err = regulator_enable(ts->reg); in ads7846_probe()
1350 err = devm_add_action_or_reset(dev, ads7846_regulator_disable, ts->reg); in ads7846_probe()
1354 irq_flags = pdata->irq_flags ? : IRQF_TRIGGER_FALLING; in ads7846_probe()
1357 err = devm_request_threaded_irq(dev, spi->irq, in ads7846_probe()
1359 irq_flags, dev->driver->name, ts); in ads7846_probe()
1360 if (err && err != -EPROBE_DEFER && !pdata->irq_flags) { in ads7846_probe()
1362 "trying pin change workaround on irq %d\n", spi->irq); in ads7846_probe()
1364 err = devm_request_threaded_irq(dev, spi->irq, in ads7846_probe()
1366 irq_flags, dev->driver->name, in ads7846_probe()
1371 dev_dbg(dev, "irq %d busy?\n", spi->irq); in ads7846_probe()
1379 dev_info(dev, "touchscreen, irq %d\n", spi->irq); in ads7846_probe()
1385 if (ts->model == 7845) in ads7846_probe()
1394 device_init_wakeup(dev, pdata->wakeup); in ads7846_probe()