Lines Matching +full:touchscreen +full:- +full:min +full:- +full:pressure
1 // SPDX-License-Identifier: GPL-2.0-only
3 * ADS7846 based touchscreen and sensor driver
10 * - corgi_ts.c
11 * Copyright (C) 2004-2005 Richard Purdie
12 * - omap_ts.[hc], ads7846.h, ts_osk.c
23 #include <linux/input/touchscreen.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).
151 /* leave chip selected when we're done, for quicker re-select? */
158 /*--------------------------------------------------------------------------*/
160 /* The ADS7846 has touchscreen and other sensors.
168 #define ADS_A2A1A0_temp0 (0 << 4) /* non-differential */
169 #define ADS_A2A1A0_vbatt (2 << 4) /* non-differential */
170 #define ADS_A2A1A0_vaux (6 << 4) /* non-differential */
171 #define ADS_A2A1A0_temp1 (7 << 4) /* non-differential */
174 #define ADS_SER (1 << 2) /* non-differential */
181 #define MAX_12BIT ((1<<12)-1)
194 /* single-ended samples need to first power up reference voltage;
205 * Measure: X; Vref: X+, X-; IN: Y+
206 * Measure: Y; Vref: Y+, Y-; IN: X+
207 * Measure: Z1; Vref: Y+, X-; IN: X+
208 * Measure: Z2; Vref: Y+, X-; IN: Y-
220 if (ts->get_pendown_state) in get_pendown_state()
221 return ts->get_pendown_state(); in get_pendown_state()
223 return gpiod_get_value(ts->gpio_pendown); in get_pendown_state()
228 struct input_dev *input = ts->input; in ads7846_report_pen_up()
234 ts->pendown = false; in ads7846_report_pen_up()
235 dev_vdbg(&ts->spi->dev, "UP\n"); in ads7846_report_pen_up()
238 /* Must be called with ts->lock held */
241 if (!ts->disabled && !ts->suspended) { in ads7846_stop()
243 ts->stopped = true; in ads7846_stop()
245 wake_up(&ts->wait); in ads7846_stop()
246 disable_irq(ts->spi->irq); in ads7846_stop()
250 /* Must be called with ts->lock held */
253 if (!ts->disabled && !ts->suspended) { in ads7846_restart()
255 if (ts->pendown && !get_pendown_state(ts)) in ads7846_restart()
259 ts->stopped = false; in ads7846_restart()
261 enable_irq(ts->spi->irq); in ads7846_restart()
265 /* Must be called with ts->lock held */
269 regulator_disable(ts->reg); in __ads7846_disable()
277 /* Must be called with ts->lock held */
282 error = regulator_enable(ts->reg); in __ads7846_enable()
284 dev_err(&ts->spi->dev, "Failed to enable supply: %d\n", error); in __ads7846_enable()
291 mutex_lock(&ts->lock); in ads7846_disable()
293 if (!ts->disabled) { in ads7846_disable()
295 if (!ts->suspended) in ads7846_disable()
298 ts->disabled = true; in ads7846_disable()
301 mutex_unlock(&ts->lock); in ads7846_disable()
306 mutex_lock(&ts->lock); in ads7846_enable()
308 if (ts->disabled) { in ads7846_enable()
310 ts->disabled = false; in ads7846_enable()
312 if (!ts->suspended) in ads7846_enable()
316 mutex_unlock(&ts->lock); in ads7846_enable()
319 /*--------------------------------------------------------------------------*/
322 * Non-touchscreen sensors only use single-ended conversions.
361 return -ENOMEM; in ads7846_read12_ser()
363 spi_message_init(&req->msg); in ads7846_read12_ser()
366 if (ts->use_internal) { in ads7846_read12_ser()
367 req->ref_on = REF_ON; in ads7846_read12_ser()
368 req->xfer[0].tx_buf = &req->ref_on; in ads7846_read12_ser()
369 req->xfer[0].len = 1; in ads7846_read12_ser()
370 spi_message_add_tail(&req->xfer[0], &req->msg); in ads7846_read12_ser()
372 req->xfer[1].rx_buf = &req->scratch; in ads7846_read12_ser()
373 req->xfer[1].len = 2; in ads7846_read12_ser()
376 req->xfer[1].delay.value = ts->vref_delay_usecs; in ads7846_read12_ser()
377 req->xfer[1].delay.unit = SPI_DELAY_UNIT_USECS; in ads7846_read12_ser()
378 spi_message_add_tail(&req->xfer[1], &req->msg); in ads7846_read12_ser()
388 req->command = (u8) command; in ads7846_read12_ser()
389 req->xfer[2].tx_buf = &req->command; in ads7846_read12_ser()
390 req->xfer[2].len = 1; in ads7846_read12_ser()
391 spi_message_add_tail(&req->xfer[2], &req->msg); in ads7846_read12_ser()
393 req->xfer[3].rx_buf = &req->sample; in ads7846_read12_ser()
394 req->xfer[3].len = 2; in ads7846_read12_ser()
395 spi_message_add_tail(&req->xfer[3], &req->msg); in ads7846_read12_ser()
400 req->ref_off = PWRDOWN; in ads7846_read12_ser()
401 req->xfer[4].tx_buf = &req->ref_off; in ads7846_read12_ser()
402 req->xfer[4].len = 1; in ads7846_read12_ser()
403 spi_message_add_tail(&req->xfer[4], &req->msg); in ads7846_read12_ser()
405 req->xfer[5].rx_buf = &req->scratch; in ads7846_read12_ser()
406 req->xfer[5].len = 2; in ads7846_read12_ser()
407 CS_CHANGE(req->xfer[5]); in ads7846_read12_ser()
408 spi_message_add_tail(&req->xfer[5], &req->msg); in ads7846_read12_ser()
410 mutex_lock(&ts->lock); in ads7846_read12_ser()
412 status = spi_sync(spi, &req->msg); in ads7846_read12_ser()
414 mutex_unlock(&ts->lock); in ads7846_read12_ser()
417 /* on-wire is a must-ignore bit, a BE12 value, then padding */ in ads7846_read12_ser()
418 status = be16_to_cpu(req->sample); in ads7846_read12_ser()
436 return -ENOMEM; in ads7845_read12_ser()
438 spi_message_init(&req->msg); in ads7845_read12_ser()
440 req->command[0] = (u8) command; in ads7845_read12_ser()
441 req->xfer[0].tx_buf = req->command; in ads7845_read12_ser()
442 req->xfer[0].rx_buf = req->sample; in ads7845_read12_ser()
443 req->xfer[0].len = 3; in ads7845_read12_ser()
444 spi_message_add_tail(&req->xfer[0], &req->msg); in ads7845_read12_ser()
446 mutex_lock(&ts->lock); in ads7845_read12_ser()
448 status = spi_sync(spi, &req->msg); in ads7845_read12_ser()
450 mutex_unlock(&ts->lock); in ads7845_read12_ser()
454 status = get_unaligned_be16(&req->sample[1]); in ads7845_read12_ser()
469 ssize_t v = ads7846_read12_ser(&ts->spi->dev, \
479 * ADS7846 could use the low-accuracy two-sample scheme, but can't do the high
501 retval *= ts->vref_mv; in SHOW()
512 if (ts->model == 7846) in vbatt_adjust()
527 if (ts->model == 7843 && index < 2) /* in0, in1 */ in SHOW()
529 if (ts->model == 7845 && index != 2) /* in0 */ in SHOW()
532 return attr->mode; in SHOW()
554 switch (ts->model) { in ads784x_hwmon_register()
556 if (!ts->vref_mv) { in ads784x_hwmon_register()
557 dev_dbg(&spi->dev, "assuming 2.5V internal vREF\n"); in ads784x_hwmon_register()
558 ts->vref_mv = 2500; in ads784x_hwmon_register()
559 ts->use_internal = true; in ads784x_hwmon_register()
564 if (!ts->vref_mv) { in ads784x_hwmon_register()
565 dev_warn(&spi->dev, in ads784x_hwmon_register()
567 ts->model); in ads784x_hwmon_register()
573 hwmon = devm_hwmon_device_register_with_groups(&spi->dev, in ads784x_hwmon_register()
574 spi->modalias, ts, in ads784x_hwmon_register()
593 return sprintf(buf, "%u\n", ts->pendown); in ads7846_pen_down_show()
603 return sprintf(buf, "%u\n", ts->disabled); in ads7846_disable_show()
635 /*--------------------------------------------------------------------------*/
645 if (!ts->read_cnt || (abs(ts->last_read - *val) > ts->debounce_tol)) { in ads7846_debounce_filter()
647 ts->read_rep = 0; in ads7846_debounce_filter()
652 if (ts->read_cnt < ts->debounce_max) { in ads7846_debounce_filter()
653 ts->last_read = *val; in ads7846_debounce_filter()
654 ts->read_cnt++; in ads7846_debounce_filter()
663 ts->read_cnt = 0; in ads7846_debounce_filter()
667 if (++ts->read_rep > ts->debounce_rep) { in ads7846_debounce_filter()
672 ts->read_cnt = 0; in ads7846_debounce_filter()
673 ts->read_rep = 0; in ads7846_debounce_filter()
677 ts->read_cnt++; in ads7846_debounce_filter()
692 value = be16_to_cpup(&buf->data); in ads7846_get_value()
701 struct ads7846_packet *packet = ts->packet; in ads7846_set_cmd_val()
705 packet->y = val; in ads7846_set_cmd_val()
708 packet->x = val; in ads7846_set_cmd_val()
711 packet->z1 = val; in ads7846_set_cmd_val()
714 packet->z2 = val; in ads7846_set_cmd_val()
762 struct ads7846_packet *packet = ts->packet; in ads7846_filter()
767 packet->ignore = false; in ads7846_filter()
768 for (cmd_idx = packet->last_cmd_idx; cmd_idx < packet->cmds - 1; cmd_idx++) { in ads7846_filter()
769 struct ads7846_buf_layout *l = &packet->l[cmd_idx]; in ads7846_filter()
771 packet->last_cmd_idx = cmd_idx; in ads7846_filter()
773 for (b = l->skip; b < l->count; b++) { in ads7846_filter()
774 val = ads7846_get_value(&packet->rx[l->offset + b]); in ads7846_filter()
776 action = ts->filter(ts->filter_data, cmd_idx, &val); in ads7846_filter()
778 if (b == l->count - 1) in ads7846_filter()
779 return -EAGAIN; in ads7846_filter()
784 packet->ignore = true; in ads7846_filter()
795 struct ads7846_packet *packet = ts->packet; in ads7846_read_state()
800 packet->last_cmd_idx = 0; in ads7846_read_state()
803 ts->wait_for_sync(); in ads7846_read_state()
805 m = &ts->msg[msg_idx]; in ads7846_read_state()
806 error = spi_sync(ts->spi, m); in ads7846_read_state()
808 dev_err(&ts->spi->dev, "spi_sync --> %d\n", error); in ads7846_read_state()
809 packet->ignore = true; in ads7846_read_state()
823 struct ads7846_packet *packet = ts->packet; in ads7846_report_state()
827 x = packet->x; in ads7846_report_state()
828 y = packet->y; in ads7846_report_state()
829 if (ts->model == 7845) { in ads7846_report_state()
833 z1 = packet->z1; in ads7846_report_state()
834 z2 = packet->z2; in ads7846_report_state()
841 if (ts->model == 7843 || ts->model == 7845) { in ads7846_report_state()
842 Rt = ts->pressure_max / 2; in ads7846_report_state()
844 /* compute touch pressure resistance using equation #2 */ in ads7846_report_state()
846 Rt -= z1; in ads7846_report_state()
847 Rt *= ts->x_plate_ohms; in ads7846_report_state()
857 * Sample found inconsistent by debouncing or pressure is beyond in ads7846_report_state()
861 if (packet->ignore || Rt > ts->pressure_max) { in ads7846_report_state()
862 dev_vdbg(&ts->spi->dev, "ignored %d pressure %d\n", in ads7846_report_state()
863 packet->ignore, Rt); in ads7846_report_state()
871 if (ts->penirq_recheck_delay_usecs) { in ads7846_report_state()
872 udelay(ts->penirq_recheck_delay_usecs); in ads7846_report_state()
878 * NOTE: We can't rely on the pressure to determine the pen down in ads7846_report_state()
879 * state, even this controller has a pressure sensor. The pressure in ads7846_report_state()
887 struct input_dev *input = ts->input; in ads7846_report_state()
889 if (!ts->pendown) { in ads7846_report_state()
891 ts->pendown = true; in ads7846_report_state()
892 dev_vdbg(&ts->spi->dev, "DOWN\n"); in ads7846_report_state()
895 touchscreen_report_pos(input, &ts->core_prop, x, y, false); in ads7846_report_state()
896 input_report_abs(input, ABS_PRESSURE, ts->pressure_max - Rt); in ads7846_report_state()
899 dev_vdbg(&ts->spi->dev, "%4d/%4d/%4d\n", x, y, Rt); in ads7846_report_state()
918 while (!ts->stopped && get_pendown_state(ts)) { in ads7846_irq()
923 if (!ts->stopped) in ads7846_irq()
926 wait_event_timeout(ts->wait, ts->stopped, in ads7846_irq()
930 if (ts->pendown && !ts->stopped) in ads7846_irq()
940 mutex_lock(&ts->lock); in ads7846_suspend()
942 if (!ts->suspended) { in ads7846_suspend()
944 if (!ts->disabled) in ads7846_suspend()
947 if (device_may_wakeup(&ts->spi->dev)) in ads7846_suspend()
948 enable_irq_wake(ts->spi->irq); in ads7846_suspend()
950 ts->suspended = true; in ads7846_suspend()
953 mutex_unlock(&ts->lock); in ads7846_suspend()
962 mutex_lock(&ts->lock); in ads7846_resume()
964 if (ts->suspended) { in ads7846_resume()
966 ts->suspended = false; in ads7846_resume()
968 if (device_may_wakeup(&ts->spi->dev)) in ads7846_resume()
969 disable_irq_wake(ts->spi->irq); in ads7846_resume()
971 if (!ts->disabled) in ads7846_resume()
975 mutex_unlock(&ts->lock); in ads7846_resume()
987 * REVISIT when the irq can be triggered active-low, or if for some in ads7846_setup_pendown()
988 * reason the touchscreen isn't hooked up, we don't need to access in ads7846_setup_pendown()
992 if (pdata->get_pendown_state) { in ads7846_setup_pendown()
993 ts->get_pendown_state = pdata->get_pendown_state; in ads7846_setup_pendown()
995 ts->gpio_pendown = gpiod_get(&spi->dev, "pendown", GPIOD_IN); in ads7846_setup_pendown()
996 if (IS_ERR(ts->gpio_pendown)) { in ads7846_setup_pendown()
997 dev_err(&spi->dev, "failed to request pendown GPIO\n"); in ads7846_setup_pendown()
998 return PTR_ERR(ts->gpio_pendown); in ads7846_setup_pendown()
1000 if (pdata->gpio_pendown_debounce) in ads7846_setup_pendown()
1001 gpiod_set_debounce(ts->gpio_pendown, in ads7846_setup_pendown()
1002 pdata->gpio_pendown_debounce); in ads7846_setup_pendown()
1009 * Set up the transfers to read touchscreen state; this assumes we
1010 * use formula #2 for pressure, not #3.
1015 struct spi_message *m = &ts->msg[0]; in ads7846_setup_spi_msg()
1016 struct spi_transfer *x = ts->xfer; in ads7846_setup_spi_msg()
1017 struct ads7846_packet *packet = ts->packet; in ads7846_setup_spi_msg()
1018 int vref = pdata->keep_vref_on; in ads7846_setup_spi_msg()
1025 time = NSEC_PER_SEC / ts->spi->max_speed_hz; in ads7846_setup_spi_msg()
1027 count = pdata->settle_delay_usecs * NSEC_PER_USEC / time; in ads7846_setup_spi_msg()
1028 packet->count_skip = DIV_ROUND_UP(count, 24); in ads7846_setup_spi_msg()
1030 if (ts->debounce_max && ts->debounce_rep) in ads7846_setup_spi_msg()
1031 /* ads7846_debounce_filter() is making ts->debounce_rep + 2 in ads7846_setup_spi_msg()
1033 packet->count = ts->debounce_rep + 2; in ads7846_setup_spi_msg()
1035 packet->count = 1; in ads7846_setup_spi_msg()
1037 if (ts->model == 7846) in ads7846_setup_spi_msg()
1038 packet->cmds = 5; /* x, y, z1, z2, pwdown */ in ads7846_setup_spi_msg()
1040 packet->cmds = 3; /* x, y, pwdown */ in ads7846_setup_spi_msg()
1042 for (cmd_idx = 0; cmd_idx < packet->cmds; cmd_idx++) { in ads7846_setup_spi_msg()
1043 struct ads7846_buf_layout *l = &packet->l[cmd_idx]; in ads7846_setup_spi_msg()
1046 if (cmd_idx == packet->cmds - 1) in ads7846_setup_spi_msg()
1050 max_count = packet->count + packet->count_skip; in ads7846_setup_spi_msg()
1052 max_count = packet->count; in ads7846_setup_spi_msg()
1054 l->offset = offset; in ads7846_setup_spi_msg()
1056 l->count = max_count; in ads7846_setup_spi_msg()
1057 l->skip = packet->count_skip; in ads7846_setup_spi_msg()
1058 size += sizeof(*packet->tx) * max_count; in ads7846_setup_spi_msg()
1061 packet->tx = devm_kzalloc(&ts->spi->dev, size, GFP_KERNEL); in ads7846_setup_spi_msg()
1062 if (!packet->tx) in ads7846_setup_spi_msg()
1063 return -ENOMEM; in ads7846_setup_spi_msg()
1065 packet->rx = devm_kzalloc(&ts->spi->dev, size, GFP_KERNEL); in ads7846_setup_spi_msg()
1066 if (!packet->rx) in ads7846_setup_spi_msg()
1067 return -ENOMEM; in ads7846_setup_spi_msg()
1069 if (ts->model == 7873) { in ads7846_setup_spi_msg()
1075 ts->model = 7846; in ads7846_setup_spi_msg()
1079 ts->msg_count = 1; in ads7846_setup_spi_msg()
1081 m->context = ts; in ads7846_setup_spi_msg()
1083 for (cmd_idx = 0; cmd_idx < packet->cmds; cmd_idx++) { in ads7846_setup_spi_msg()
1084 struct ads7846_buf_layout *l = &packet->l[cmd_idx]; in ads7846_setup_spi_msg()
1087 if (cmd_idx == packet->cmds - 1) in ads7846_setup_spi_msg()
1092 for (b = 0; b < l->count; b++) in ads7846_setup_spi_msg()
1093 packet->tx[l->offset + b].cmd = cmd; in ads7846_setup_spi_msg()
1096 x->tx_buf = packet->tx; in ads7846_setup_spi_msg()
1097 x->rx_buf = packet->rx; in ads7846_setup_spi_msg()
1098 x->len = size; in ads7846_setup_spi_msg()
1121 return ERR_PTR(-ENOMEM); in ads7846_get_props()
1123 pdata->model = (uintptr_t)device_get_match_data(dev); in ads7846_get_props()
1125 device_property_read_u16(dev, "ti,vref-delay-usecs", in ads7846_get_props()
1126 &pdata->vref_delay_usecs); in ads7846_get_props()
1127 device_property_read_u16(dev, "ti,vref-mv", &pdata->vref_mv); in ads7846_get_props()
1128 pdata->keep_vref_on = device_property_read_bool(dev, "ti,keep-vref-on"); in ads7846_get_props()
1130 pdata->swap_xy = device_property_read_bool(dev, "ti,swap-xy"); in ads7846_get_props()
1132 device_property_read_u16(dev, "ti,settle-delay-usec", in ads7846_get_props()
1133 &pdata->settle_delay_usecs); in ads7846_get_props()
1134 device_property_read_u16(dev, "ti,penirq-recheck-delay-usecs", in ads7846_get_props()
1135 &pdata->penirq_recheck_delay_usecs); in ads7846_get_props()
1137 device_property_read_u16(dev, "ti,x-plate-ohms", &pdata->x_plate_ohms); in ads7846_get_props()
1138 device_property_read_u16(dev, "ti,y-plate-ohms", &pdata->y_plate_ohms); in ads7846_get_props()
1140 device_property_read_u16(dev, "ti,x-min", &pdata->x_min); in ads7846_get_props()
1141 device_property_read_u16(dev, "ti,y-min", &pdata->y_min); in ads7846_get_props()
1142 device_property_read_u16(dev, "ti,x-max", &pdata->x_max); in ads7846_get_props()
1143 device_property_read_u16(dev, "ti,y-max", &pdata->y_max); in ads7846_get_props()
1146 * touchscreen-max-pressure gets parsed during in ads7846_get_props()
1149 device_property_read_u16(dev, "ti,pressure-min", &pdata->pressure_min); in ads7846_get_props()
1150 if (!device_property_read_u32(dev, "touchscreen-min-pressure", &value)) in ads7846_get_props()
1151 pdata->pressure_min = (u16) value; in ads7846_get_props()
1152 device_property_read_u16(dev, "ti,pressure-max", &pdata->pressure_max); in ads7846_get_props()
1154 device_property_read_u16(dev, "ti,debounce-max", &pdata->debounce_max); in ads7846_get_props()
1155 if (!device_property_read_u32(dev, "touchscreen-average-samples", &value)) in ads7846_get_props()
1156 pdata->debounce_max = (u16) value; in ads7846_get_props()
1157 device_property_read_u16(dev, "ti,debounce-tol", &pdata->debounce_tol); in ads7846_get_props()
1158 device_property_read_u16(dev, "ti,debounce-rep", &pdata->debounce_rep); in ads7846_get_props()
1160 device_property_read_u32(dev, "ti,pendown-gpio-debounce", in ads7846_get_props()
1161 &pdata->gpio_pendown_debounce); in ads7846_get_props()
1163 pdata->wakeup = device_property_read_bool(dev, "wakeup-source") || in ads7846_get_props()
1178 struct device *dev = &spi->dev; in ads7846_probe()
1184 if (!spi->irq) { in ads7846_probe()
1186 return -EINVAL; in ads7846_probe()
1190 if (spi->max_speed_hz > (125000 * SAMPLE_BITS)) { in ads7846_probe()
1192 (spi->max_speed_hz/SAMPLE_BITS)/1000); in ads7846_probe()
1193 return -EINVAL; in ads7846_probe()
1199 * may not. So we stick to very-portable 8 bit words, both RX and TX. in ads7846_probe()
1201 spi->bits_per_word = 8; in ads7846_probe()
1202 spi->mode &= ~SPI_MODE_X_MASK; in ads7846_probe()
1203 spi->mode |= SPI_MODE_0; in ads7846_probe()
1210 return -ENOMEM; in ads7846_probe()
1214 return -ENOMEM; in ads7846_probe()
1218 return -ENOMEM; in ads7846_probe()
1222 ts->packet = packet; in ads7846_probe()
1223 ts->spi = spi; in ads7846_probe()
1224 ts->input = input_dev; in ads7846_probe()
1226 mutex_init(&ts->lock); in ads7846_probe()
1227 init_waitqueue_head(&ts->wait); in ads7846_probe()
1236 ts->model = pdata->model ? : 7846; in ads7846_probe()
1237 ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100; in ads7846_probe()
1238 ts->x_plate_ohms = pdata->x_plate_ohms ? : 400; in ads7846_probe()
1239 ts->vref_mv = pdata->vref_mv; in ads7846_probe()
1241 if (pdata->debounce_max) { in ads7846_probe()
1242 ts->debounce_max = pdata->debounce_max; in ads7846_probe()
1243 if (ts->debounce_max < 2) in ads7846_probe()
1244 ts->debounce_max = 2; in ads7846_probe()
1245 ts->debounce_tol = pdata->debounce_tol; in ads7846_probe()
1246 ts->debounce_rep = pdata->debounce_rep; in ads7846_probe()
1247 ts->filter = ads7846_debounce_filter; in ads7846_probe()
1248 ts->filter_data = ts; in ads7846_probe()
1250 ts->filter = ads7846_no_filter; in ads7846_probe()
1257 if (pdata->penirq_recheck_delay_usecs) in ads7846_probe()
1258 ts->penirq_recheck_delay_usecs = in ads7846_probe()
1259 pdata->penirq_recheck_delay_usecs; in ads7846_probe()
1261 ts->wait_for_sync = pdata->wait_for_sync ? : null_wait_for_sync; in ads7846_probe()
1263 snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(dev)); in ads7846_probe()
1264 snprintf(ts->name, sizeof(ts->name), "ADS%d Touchscreen", ts->model); in ads7846_probe()
1266 input_dev->name = ts->name; in ads7846_probe()
1267 input_dev->phys = ts->phys; in ads7846_probe()
1269 input_dev->id.bustype = BUS_SPI; in ads7846_probe()
1270 input_dev->id.product = pdata->model; in ads7846_probe()
1274 pdata->x_min ? : 0, in ads7846_probe()
1275 pdata->x_max ? : MAX_12BIT, in ads7846_probe()
1278 pdata->y_min ? : 0, in ads7846_probe()
1279 pdata->y_max ? : MAX_12BIT, in ads7846_probe()
1281 if (ts->model != 7845) in ads7846_probe()
1283 pdata->pressure_min, pdata->pressure_max, 0, 0); in ads7846_probe()
1290 touchscreen_parse_properties(ts->input, false, &ts->core_prop); in ads7846_probe()
1291 ts->pressure_max = input_abs_get_max(input_dev, ABS_PRESSURE) ? : ~0; in ads7846_probe()
1294 * Check if legacy ti,swap-xy binding is used instead of in ads7846_probe()
1295 * touchscreen-swapped-x-y in ads7846_probe()
1297 if (!ts->core_prop.swap_x_y && pdata->swap_xy) { in ads7846_probe()
1298 swap(input_dev->absinfo[ABS_X], input_dev->absinfo[ABS_Y]); in ads7846_probe()
1299 ts->core_prop.swap_x_y = true; in ads7846_probe()
1304 ts->reg = devm_regulator_get(dev, "vcc"); in ads7846_probe()
1305 if (IS_ERR(ts->reg)) { in ads7846_probe()
1306 err = PTR_ERR(ts->reg); in ads7846_probe()
1311 err = regulator_enable(ts->reg); in ads7846_probe()
1317 err = devm_add_action_or_reset(dev, ads7846_regulator_disable, ts->reg); in ads7846_probe()
1321 irq_flags = pdata->irq_flags ? : IRQF_TRIGGER_FALLING; in ads7846_probe()
1324 err = devm_request_threaded_irq(dev, spi->irq, in ads7846_probe()
1326 irq_flags, dev->driver->name, ts); in ads7846_probe()
1327 if (err && err != -EPROBE_DEFER && !pdata->irq_flags) { in ads7846_probe()
1329 "trying pin change workaround on irq %d\n", spi->irq); in ads7846_probe()
1331 err = devm_request_threaded_irq(dev, spi->irq, in ads7846_probe()
1333 irq_flags, dev->driver->name, in ads7846_probe()
1338 dev_dbg(dev, "irq %d busy?\n", spi->irq); in ads7846_probe()
1346 dev_info(dev, "touchscreen, irq %d\n", spi->irq); in ads7846_probe()
1350 * the touchscreen, in case it's not connected. in ads7846_probe()
1352 if (ts->model == 7845) in ads7846_probe()
1361 device_init_wakeup(dev, pdata->wakeup); in ads7846_probe()
1393 MODULE_DESCRIPTION("ADS7846 TouchScreen Driver");