Lines Matching refs:applespi
63 #include "applespi.h"
549 static void applespi_setup_read_txfrs(struct applespi_data *applespi)
551 struct spi_message *msg = &applespi->rd_m;
552 struct spi_transfer *dl_t = &applespi->dl_t;
553 struct spi_transfer *rd_t = &applespi->rd_t;
558 dl_t->delay.value = applespi->spi_settings.spi_cs_delay;
561 rd_t->rx_buf = applespi->rx_buffer;
569 static void applespi_setup_write_txfrs(struct applespi_data *applespi)
571 struct spi_message *msg = &applespi->wr_m;
572 struct spi_transfer *wt_t = &applespi->ww_t;
573 struct spi_transfer *dl_t = &applespi->wd_t;
574 struct spi_transfer *wr_t = &applespi->wr_t;
575 struct spi_transfer *st_t = &applespi->st_t;
592 dl_t->delay.value = applespi->spi_settings.spi_cs_delay;
595 wr_t->tx_buf = applespi->tx_buffer;
600 st_t->rx_buf = applespi->tx_status;
610 static int applespi_async(struct applespi_data *applespi,
614 message->context = applespi;
616 return spi_async(applespi->spi, message);
619 static inline bool applespi_check_write_status(struct applespi_data *applespi,
625 dev_warn(&applespi->spi->dev, "Error writing to device: %d\n",
630 if (memcmp(applespi->tx_status, status_ok, APPLESPI_STATUS_SIZE)) {
631 dev_warn(&applespi->spi->dev, "Error writing to device: %*ph\n",
632 APPLESPI_STATUS_SIZE, applespi->tx_status);
639 static int applespi_get_spi_settings(struct applespi_data *applespi)
641 struct acpi_device *adev = ACPI_COMPANION(&applespi->spi->dev);
643 struct spi_settings *settings = &applespi->spi_settings;
648 dev_warn(&applespi->spi->dev,
654 dev_warn(&applespi->spi->dev,
660 dev_warn(&applespi->spi->dev,
663 dev_dbg(&applespi->spi->dev,
671 static int applespi_setup_spi(struct applespi_data *applespi)
675 sts = applespi_get_spi_settings(applespi);
679 spin_lock_init(&applespi->cmd_msg_lock);
680 init_waitqueue_head(&applespi->drain_complete);
685 static int applespi_enable_spi(struct applespi_data *applespi)
691 acpi_sts = acpi_evaluate_integer(applespi->sist, NULL, NULL,
697 acpi_sts = acpi_execute_simple_method(applespi->sien, NULL, 1);
699 dev_err(&applespi->spi->dev, "SIEN failed: %s\n",
715 static int applespi_send_cmd_msg(struct applespi_data *applespi);
717 static void applespi_msg_complete(struct applespi_data *applespi,
722 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
725 applespi->read_active = false;
727 applespi->write_active = false;
729 if (applespi->drain && !applespi->write_active)
730 wake_up_all(&applespi->drain_complete);
733 applespi->cmd_msg_queued = 0;
734 applespi_send_cmd_msg(applespi);
737 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
742 struct applespi_data *applespi = context;
743 enum applespi_evt_type evt_type = applespi->cmd_evt_type;
746 applespi->tx_buffer,
749 applespi->tx_status,
754 if (!applespi_check_write_status(applespi, applespi->wr_m.status)) {
759 applespi_msg_complete(applespi, true, false);
763 static int applespi_send_cmd_msg(struct applespi_data *applespi)
767 struct spi_packet *packet = (struct spi_packet *)applespi->tx_buffer;
773 if (applespi->drain)
777 if (applespi->cmd_msg_queued) {
778 if (ktime_ms_delta(ktime_get(), applespi->cmd_msg_queued) < 1000)
781 dev_warn(&applespi->spi->dev, "Command %d timed out\n",
782 applespi->cmd_evt_type);
784 applespi->cmd_msg_queued = 0;
785 applespi->write_active = false;
792 if (applespi->want_tp_info_cmd) {
793 applespi->want_tp_info_cmd = false;
794 applespi->want_mt_init_cmd = true;
795 applespi->cmd_evt_type = ET_CMD_TP_INI;
806 } else if (applespi->want_mt_init_cmd) {
807 applespi->want_mt_init_cmd = false;
808 applespi->cmd_evt_type = ET_CMD_TP_INI;
819 } else if (applespi->want_cl_led_on != applespi->have_cl_led_on) {
820 applespi->have_cl_led_on = applespi->want_cl_led_on;
821 applespi->cmd_evt_type = ET_CMD_CL;
830 message->capsl_command.led = applespi->have_cl_led_on ? 2 : 0;
833 } else if (applespi->want_bl_level != applespi->have_bl_level) {
834 applespi->have_bl_level = applespi->want_bl_level;
835 applespi->cmd_evt_type = ET_CMD_BL;
845 cpu_to_le16(applespi->have_bl_level);
847 if (applespi->have_bl_level > 0)
862 message->counter = applespi->cmd_msg_cntr++ % (U8_MAX + 1);
875 sts = applespi_async(applespi, &applespi->wr_m,
878 dev_warn(&applespi->spi->dev,
883 applespi->cmd_msg_queued = ktime_get_coarse();
884 applespi->write_active = true;
889 static void applespi_init(struct applespi_data *applespi, bool is_resume)
893 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
896 applespi->want_mt_init_cmd = true;
898 applespi->want_tp_info_cmd = true;
899 applespi_send_cmd_msg(applespi);
901 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
904 static int applespi_set_capsl_led(struct applespi_data *applespi,
910 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
912 applespi->want_cl_led_on = capslock_on;
913 sts = applespi_send_cmd_msg(applespi);
915 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
923 struct applespi_data *applespi =
927 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
930 applespi->want_bl_level = value;
937 applespi->want_bl_level =
942 applespi_send_cmd_msg(applespi);
944 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
950 struct applespi_data *applespi = input_get_drvdata(dev);
954 applespi_set_capsl_led(applespi, !!test_bit(LED_CAPSL, dev->led));
968 static void applespi_debug_update_dimensions(struct applespi_data *applespi,
971 applespi->tp_dim_min_x = min(applespi->tp_dim_min_x,
973 applespi->tp_dim_max_x = max(applespi->tp_dim_max_x,
975 applespi->tp_dim_min_y = min(applespi->tp_dim_min_y,
977 applespi->tp_dim_max_y = max(applespi->tp_dim_max_y,
983 struct applespi_data *applespi = inode->i_private;
985 file->private_data = applespi;
987 snprintf(applespi->tp_dim_val, sizeof(applespi->tp_dim_val),
989 applespi->touchpad_input_dev->id.product,
990 applespi->tp_dim_min_x, applespi->tp_dim_min_y,
991 applespi->tp_dim_max_x - applespi->tp_dim_min_x,
992 applespi->tp_dim_max_y - applespi->tp_dim_min_y);
1000 struct applespi_data *applespi = file->private_data;
1002 return simple_read_from_buffer(buf, len, off, applespi->tp_dim_val,
1003 strlen(applespi->tp_dim_val));
1034 static void report_tp_state(struct applespi_data *applespi,
1039 const struct applespi_tp_info *tp_info = &applespi->tp_info;
1043 input = smp_load_acquire(&applespi->touchpad_input_dev);
1053 applespi->pos[n].x = le16_to_int(f->abs_x);
1054 applespi->pos[n].y = tp_info->y_min + tp_info->y_max -
1058 if (applespi->debug_tp_dim)
1059 applespi_debug_update_dimensions(applespi, f);
1062 input_mt_assign_slots(input, applespi->slots, applespi->pos, n, 0);
1065 report_finger_data(input, applespi->slots[i],
1066 &applespi->pos[i], &t->fingers[i]);
1147 applespi_handle_keyboard_event(struct applespi_data *applespi,
1167 applespi->last_keys_pressed[i], MAX_ROLLOVER))
1170 key = applespi_code_to_key(applespi->last_keys_pressed[i],
1171 applespi->last_keys_fn_pressed[i]);
1172 input_report_key(applespi->keyboard_input_dev, key, 0);
1173 applespi->last_keys_fn_pressed[i] = 0;
1184 input_report_key(applespi->keyboard_input_dev, key, 1);
1185 applespi->last_keys_fn_pressed[i] =
1193 input_report_key(applespi->keyboard_input_dev,
1196 input_report_key(applespi->keyboard_input_dev,
1201 if (keyboard_protocol->fn_pressed && !applespi->last_fn_pressed)
1202 input_report_key(applespi->keyboard_input_dev, KEY_FN, 1);
1203 else if (!keyboard_protocol->fn_pressed && applespi->last_fn_pressed)
1204 input_report_key(applespi->keyboard_input_dev, KEY_FN, 0);
1205 applespi->last_fn_pressed = keyboard_protocol->fn_pressed;
1208 input_sync(applespi->keyboard_input_dev);
1209 memcpy(&applespi->last_keys_pressed, keyboard_protocol->keys_pressed,
1210 sizeof(applespi->last_keys_pressed));
1226 applespi_register_touchpad_device(struct applespi_data *applespi,
1236 dev_warn(&applespi->spi->dev,
1242 applespi->tp_info = *tp_info;
1249 dev_info(&applespi->spi->dev,
1251 applespi->tp_info.x_min = x;
1252 applespi->tp_info.y_min = y;
1253 applespi->tp_info.x_max = x + w;
1254 applespi->tp_info.y_max = y + h;
1256 dev_warn(&applespi->spi->dev,
1265 applespi->tp_info.x_min,
1266 applespi->tp_info.y_min,
1267 applespi->tp_info.x_max - applespi->tp_info.x_min,
1268 applespi->tp_info.y_max - applespi->tp_info.y_min);
1272 touchpad_input_dev = devm_input_allocate_device(&applespi->spi->dev);
1274 dev_err(&applespi->spi->dev,
1280 touchpad_input_dev->phys = "applespi/input1";
1281 touchpad_input_dev->dev.parent = &applespi->spi->dev;
1313 applespi->tp_info.x_min, applespi->tp_info.x_max,
1316 applespi->tp_info.y_min, applespi->tp_info.y_max,
1327 dev_err(&applespi->spi->dev,
1335 dev_err(&applespi->spi->dev,
1341 smp_store_release(&applespi->touchpad_input_dev, touchpad_input_dev);
1348 struct applespi_data *applespi =
1351 applespi_register_touchpad_device(applespi, &applespi->rcvd_tp_info);
1354 static void applespi_handle_cmd_response(struct applespi_data *applespi,
1364 applespi->rcvd_tp_info = message->tp_info;
1365 schedule_work(&applespi->work);
1370 dev_warn_ratelimited(&applespi->spi->dev,
1379 dev_info(&applespi->spi->dev, "modeswitch done.\n");
1382 static bool applespi_verify_crc(struct applespi_data *applespi, u8 *buffer,
1389 dev_warn_ratelimited(&applespi->spi->dev,
1399 static void applespi_debug_print_read_packet(struct applespi_data *applespi,
1411 evt_type = applespi->cmd_evt_type;
1415 applespi_get_trace_fun(evt_type)(evt_type, PT_READ, applespi->rx_buffer,
1419 static void applespi_got_data(struct applespi_data *applespi)
1429 if (!applespi_verify_crc(applespi, applespi->rx_buffer,
1433 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
1435 if (applespi->drain) {
1436 applespi->read_active = false;
1437 applespi->write_active = false;
1439 wake_up_all(&applespi->drain_complete);
1442 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
1447 packet = (struct spi_packet *)applespi->rx_buffer;
1449 applespi_debug_print_read_packet(applespi, packet);
1456 dev_warn_ratelimited(&applespi->spi->dev,
1464 if (off != applespi->saved_msg_len) {
1465 dev_warn_ratelimited(&applespi->spi->dev,
1467 off, applespi->saved_msg_len);
1472 dev_warn_ratelimited(&applespi->spi->dev,
1479 dev_warn_ratelimited(&applespi->spi->dev,
1485 memcpy(applespi->msg_buf + off, &packet->data, len);
1486 applespi->saved_msg_len += len;
1491 message = (struct message *)applespi->msg_buf;
1492 msg_len = applespi->saved_msg_len;
1499 if (!applespi_verify_crc(applespi, (u8 *)message, msg_len))
1503 dev_warn_ratelimited(&applespi->spi->dev,
1513 applespi_handle_keyboard_event(applespi, &message->keyboard);
1524 dev_warn_ratelimited(&applespi->spi->dev,
1532 dev_warn_ratelimited(&applespi->spi->dev,
1539 report_tp_state(applespi, tp);
1542 applespi_handle_cmd_response(applespi, packet, message);
1546 applespi->saved_msg_len = 0;
1548 applespi_msg_complete(applespi, packet->flags == PACKET_TYPE_WRITE,
1554 struct applespi_data *applespi = context;
1556 if (applespi->rd_m.status < 0) {
1557 dev_warn(&applespi->spi->dev, "Error reading from device: %d\n",
1558 applespi->rd_m.status);
1564 applespi_msg_complete(applespi, true, true);
1566 applespi_got_data(applespi);
1569 acpi_finish_gpe(NULL, applespi->gpe);
1574 struct applespi_data *applespi = context;
1580 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
1582 if (!applespi->suspended) {
1583 sts = applespi_async(applespi, &applespi->rd_m,
1586 dev_warn(&applespi->spi->dev,
1590 applespi->read_active = true;
1593 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
1598 static int applespi_get_saved_bl_level(struct applespi_data *applespi)
1608 dev_warn(&applespi->spi->dev,
1615 static void applespi_save_bl_level(struct applespi_data *applespi,
1630 dev_warn(&applespi->spi->dev,
1636 struct applespi_data *applespi;
1651 applespi = devm_kzalloc(&spi->dev, sizeof(*applespi), GFP_KERNEL);
1652 if (!applespi)
1655 applespi->spi = spi;
1657 INIT_WORK(&applespi->work, applespi_worker);
1660 spi_set_drvdata(spi, applespi);
1663 applespi->tx_buffer = devm_kmalloc(&spi->dev, APPLESPI_PACKET_SIZE,
1665 applespi->tx_status = devm_kmalloc(&spi->dev, APPLESPI_STATUS_SIZE,
1667 applespi->rx_buffer = devm_kmalloc(&spi->dev, APPLESPI_PACKET_SIZE,
1669 applespi->msg_buf = devm_kmalloc_array(&spi->dev, MAX_PKTS_PER_MSG,
1673 if (!applespi->tx_buffer || !applespi->tx_status ||
1674 !applespi->rx_buffer || !applespi->msg_buf)
1678 applespi_setup_read_txfrs(applespi);
1679 applespi_setup_write_txfrs(applespi);
1682 acpi_sts = acpi_get_handle(spi_handle, "SIEN", &applespi->sien);
1684 dev_err(&applespi->spi->dev,
1690 acpi_sts = acpi_get_handle(spi_handle, "SIST", &applespi->sist);
1692 dev_err(&applespi->spi->dev,
1699 sts = applespi_setup_spi(applespi);
1703 sts = applespi_enable_spi(applespi);
1708 applespi->keyboard_input_dev = devm_input_allocate_device(&spi->dev);
1710 if (!applespi->keyboard_input_dev)
1713 applespi->keyboard_input_dev->name = "Apple SPI Keyboard";
1714 applespi->keyboard_input_dev->phys = "applespi/input0";
1715 applespi->keyboard_input_dev->dev.parent = &spi->dev;
1716 applespi->keyboard_input_dev->id.bustype = BUS_SPI;
1718 applespi->keyboard_input_dev->evbit[0] =
1720 applespi->keyboard_input_dev->ledbit[0] = BIT_MASK(LED_CAPSL);
1722 input_set_drvdata(applespi->keyboard_input_dev, applespi);
1723 applespi->keyboard_input_dev->event = applespi_event;
1727 input_set_capability(applespi->keyboard_input_dev,
1732 input_set_capability(applespi->keyboard_input_dev,
1737 input_set_capability(applespi->keyboard_input_dev,
1740 input_set_capability(applespi->keyboard_input_dev, EV_KEY, KEY_FN);
1742 sts = input_register_device(applespi->keyboard_input_dev);
1744 dev_err(&applespi->spi->dev,
1750 * The applespi device doesn't send interrupts normally (as is described
1755 dev_err(&applespi->spi->dev,
1760 applespi->gpe = (int)gpe;
1762 acpi_sts = acpi_install_gpe_handler(NULL, applespi->gpe,
1764 applespi_notify, applespi);
1766 dev_err(&applespi->spi->dev,
1768 applespi->gpe, acpi_format_exception(acpi_sts));
1772 applespi->suspended = false;
1774 acpi_sts = acpi_enable_gpe(NULL, applespi->gpe);
1776 dev_err(&applespi->spi->dev,
1778 applespi->gpe, acpi_format_exception(acpi_sts));
1779 acpi_remove_gpe_handler(NULL, applespi->gpe, applespi_notify);
1784 applespi_init(applespi, false);
1794 sts = applespi_get_saved_bl_level(applespi);
1796 applespi_set_bl_level(&applespi->backlight_info, sts);
1798 applespi->backlight_info.name = "spi::kbd_backlight";
1799 applespi->backlight_info.default_trigger = "kbd-backlight";
1800 applespi->backlight_info.brightness_set = applespi_set_bl_level;
1802 sts = devm_led_classdev_register(&spi->dev, &applespi->backlight_info);
1804 dev_warn(&applespi->spi->dev,
1809 applespi->debugfs_root = debugfs_create_dir("applespi", NULL);
1811 debugfs_create_bool("enable_tp_dim", 0600, applespi->debugfs_root,
1812 &applespi->debug_tp_dim);
1814 debugfs_create_file("tp_dim", 0400, applespi->debugfs_root, applespi,
1820 static void applespi_drain_writes(struct applespi_data *applespi)
1824 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
1826 applespi->drain = true;
1827 wait_event_lock_irq(applespi->drain_complete, !applespi->write_active,
1828 applespi->cmd_msg_lock);
1830 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
1833 static void applespi_drain_reads(struct applespi_data *applespi)
1837 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
1839 wait_event_lock_irq(applespi->drain_complete, !applespi->read_active,
1840 applespi->cmd_msg_lock);
1842 applespi->suspended = true;
1844 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
1849 struct applespi_data *applespi = spi_get_drvdata(spi);
1851 applespi_drain_writes(applespi);
1853 acpi_disable_gpe(NULL, applespi->gpe);
1854 acpi_remove_gpe_handler(NULL, applespi->gpe, applespi_notify);
1857 applespi_drain_reads(applespi);
1859 debugfs_remove_recursive(applespi->debugfs_root);
1864 struct applespi_data *applespi = spi_get_drvdata(spi);
1866 applespi_save_bl_level(applespi, applespi->have_bl_level);
1872 struct applespi_data *applespi = spi_get_drvdata(spi);
1874 applespi_save_bl_level(applespi, applespi->have_bl_level);
1882 struct applespi_data *applespi = spi_get_drvdata(spi);
1887 sts = applespi_set_capsl_led(applespi, false);
1889 dev_warn(&applespi->spi->dev,
1892 applespi_drain_writes(applespi);
1895 acpi_sts = acpi_disable_gpe(NULL, applespi->gpe);
1897 dev_err(&applespi->spi->dev,
1899 applespi->gpe, acpi_format_exception(acpi_sts));
1901 applespi_drain_reads(applespi);
1909 struct applespi_data *applespi = spi_get_drvdata(spi);
1914 spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
1916 applespi->drain = false;
1917 applespi->have_cl_led_on = false;
1918 applespi->have_bl_level = 0;
1919 applespi->cmd_msg_queued = 0;
1920 applespi->read_active = false;
1921 applespi->write_active = false;
1923 applespi->suspended = false;
1925 spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
1928 applespi_enable_spi(applespi);
1931 acpi_sts = acpi_enable_gpe(NULL, applespi->gpe);
1933 dev_err(&applespi->spi->dev,
1935 applespi->gpe, acpi_format_exception(acpi_sts));
1938 applespi_init(applespi, true);
1956 .name = "applespi",