1 // SPDX-License-Identifier: GPL-2.0-only
3  * Raydium touchscreen I2C driver.
5  * Copyright (C) 2012-2014, Raydium Semiconductor Corporation.
11  * Contact Raydium Semiconductor Corporation at www.rad-ic.com
113 	u8 x_res;		/* units/mm */
114 	u8 y_res;		/* units/mm */
117 /* struct raydium_data - represents state of Raydium touchscreen device */
158 	xfer_count -= xfer_start_idx;  in raydium_i2c_xfer()
160 	ret = i2c_transfer(client->adapter, &xfer[xfer_start_idx], xfer_count);  in raydium_i2c_xfer()
164 	return ret < 0 ? ret : -EIO;  in raydium_i2c_xfer()
177 		return -ENOMEM;  in raydium_i2c_send()
200 				.addr = client->addr,  in raydium_i2c_send()
205 				.addr = client->addr,  in raydium_i2c_send()
218 	dev_err(&client->dev, "%s failed: %d\n", __func__, error);  in raydium_i2c_send()
249 				.addr = client->addr,  in raydium_i2c_read()
254 				.addr = client->addr,  in raydium_i2c_read()
259 				.addr = client->addr,  in raydium_i2c_read()
270 		len -= xfer_len;  in raydium_i2c_read()
286 		dev_err(&client->dev, "software reset failed: %d\n", error);  in raydium_i2c_sw_reset()
297 	struct i2c_client *client = ts->client;  in raydium_i2c_query_ts_bootloader_info()
307 		dev_err(&client->dev, "WRT HWID command failed: %d\n", error);  in raydium_i2c_query_ts_bootloader_info()
313 		dev_err(&client->dev, "Ack HWID command failed: %d\n", error);  in raydium_i2c_query_ts_bootloader_info()
319 		dev_err(&client->dev, "Read HWID command failed: %d (%4ph)\n",  in raydium_i2c_query_ts_bootloader_info()
326 	ts->info.hw_ver = cpu_to_le32(hw_ver);  in raydium_i2c_query_ts_bootloader_info()
327 	ts->info.main_ver = 0xff;  in raydium_i2c_query_ts_bootloader_info()
328 	ts->info.sub_ver = 0xff;  in raydium_i2c_query_ts_bootloader_info()
335 	struct i2c_client *client = ts->client;  in raydium_i2c_query_ts_info()
352 		if (ts->report_data && ts->pkg_size != data_info.pkg_size) {  in raydium_i2c_query_ts_info()
353 			dev_warn(&client->dev,  in raydium_i2c_query_ts_info()
355 				 ts->pkg_size, data_info.pkg_size);  in raydium_i2c_query_ts_info()
357 			ts->pkg_size = data_info.pkg_size;  in raydium_i2c_query_ts_info()
358 			ts->report_size = ts->pkg_size - RM_PACKET_CRC_SIZE;  in raydium_i2c_query_ts_info()
361 		ts->contact_size = data_info.tp_info_size;  in raydium_i2c_query_ts_info()
362 		ts->data_bank_addr = le32_to_cpu(data_info.data_bank_addr);  in raydium_i2c_query_ts_info()
364 		dev_dbg(&client->dev,  in raydium_i2c_query_ts_info()
365 			"data_bank_addr: %#08x, report_size: %d, contact_size: %d\n",  in raydium_i2c_query_ts_info()
366 			ts->data_bank_addr, ts->report_size, ts->contact_size);  in raydium_i2c_query_ts_info()
375 					 &ts->info, sizeof(ts->info));  in raydium_i2c_query_ts_info()
382 	dev_err(&client->dev, "failed to query device parameters: %d\n", error);  in raydium_i2c_query_ts_info()
388 	struct i2c_client *client = ts->client;  in raydium_i2c_check_fw_status()
397 			ts->boot_mode = RAYDIUM_TS_BLDR;  in raydium_i2c_check_fw_status()
399 			ts->boot_mode = RAYDIUM_TS_MAIN;  in raydium_i2c_check_fw_status()
408 	struct i2c_client *client = ts->client;  in raydium_i2c_initialize()
417 			dev_err(&client->dev,  in raydium_i2c_initialize()
422 		if (ts->boot_mode == RAYDIUM_TS_BLDR ||  in raydium_i2c_initialize()
423 		    ts->boot_mode == RAYDIUM_TS_MAIN) {  in raydium_i2c_initialize()
429 		ts->boot_mode = RAYDIUM_TS_BLDR;  in raydium_i2c_initialize()
431 	if (ts->boot_mode == RAYDIUM_TS_BLDR)  in raydium_i2c_initialize()
469 			dev_err(&client->dev, "%s: invalid target state %d\n",  in raydium_i2c_bl_chk_state()
471 			return -EINVAL;  in raydium_i2c_bl_chk_state()
477 	return -ETIMEDOUT;  in raydium_i2c_bl_chk_state()
489 		dev_err(&client->dev, "WRT obj command failed: %d\n",  in raydium_i2c_write_object()
496 		dev_err(&client->dev, "Ack obj command failed: %d\n", error);  in raydium_i2c_write_object()
502 		dev_err(&client->dev, "BL check state failed: %d\n", error);  in raydium_i2c_write_object()
526 			dev_err(&client->dev,  in raydium_i2c_boot_trigger()
552 			dev_err(&client->dev,  in raydium_i2c_fw_trigger()
570 		dev_err(&client->dev, "check path command failed: %d\n", error);  in raydium_i2c_check_path()
585 		dev_err(&client->dev, "enter bl command failed: %d\n", error);  in raydium_i2c_enter_bl()
601 		dev_err(&client->dev, "leave bl command failed: %d\n", error);  in raydium_i2c_leave_bl()
622 		dev_err(&client->dev, "failed to write checksum: %d\n",  in raydium_i2c_write_checksum()
638 		dev_err(&client->dev, "disable watchdog command failed: %d\n",  in raydium_i2c_disable_watch_dog()
665 				RM_BL_WRT_PKG_SIZE - xfer_len);  in raydium_i2c_fw_write_page()
670 			dev_err(&client->dev,  in raydium_i2c_fw_write_page()
677 		len -= xfer_len;  in raydium_i2c_fw_write_page()
697 	struct i2c_client *client = ts->client;  in raydium_i2c_do_update_firmware()
706 	if (fw->size == 0 || fw->size > RM_MAX_FW_SIZE) {  in raydium_i2c_do_update_firmware()
707 		dev_err(&client->dev, "Invalid firmware length\n");  in raydium_i2c_do_update_firmware()
708 		return -EINVAL;  in raydium_i2c_do_update_firmware()
713 		dev_err(&client->dev, "Unable to access IC %d\n", error);  in raydium_i2c_do_update_firmware()
717 	if (ts->boot_mode == RAYDIUM_TS_MAIN) {  in raydium_i2c_do_update_firmware()
723 					dev_err(&client->dev,  in raydium_i2c_do_update_firmware()
729 				if (ts->boot_mode == RAYDIUM_TS_BLDR)  in raydium_i2c_do_update_firmware()
734 		if (ts->boot_mode == RAYDIUM_TS_MAIN) {  in raydium_i2c_do_update_firmware()
735 			dev_err(&client->dev,  in raydium_i2c_do_update_firmware()
738 			return -EIO;  in raydium_i2c_do_update_firmware()
752 		dev_err(&client->dev, "send boot trigger fail: %d\n", error);  in raydium_i2c_do_update_firmware()
758 	data = fw->data;  in raydium_i2c_do_update_firmware()
759 	data_len = fw->size;  in raydium_i2c_do_update_firmware()
772 		data_len -= len;  in raydium_i2c_do_update_firmware()
777 		dev_err(&client->dev,  in raydium_i2c_do_update_firmware()
782 	dev_dbg(&client->dev, "left boot loader mode\n");  in raydium_i2c_do_update_firmware()
787 		dev_err(&client->dev,  in raydium_i2c_do_update_firmware()
793 	if (ts->boot_mode != RAYDIUM_TS_MAIN) {  in raydium_i2c_do_update_firmware()
794 		dev_err(&client->dev,  in raydium_i2c_do_update_firmware()
797 		return -EINVAL;  in raydium_i2c_do_update_firmware()
802 		dev_err(&client->dev, "failed to trigger fw: %d\n", error);  in raydium_i2c_do_update_firmware()
806 	fw_checksum = raydium_calc_chksum(fw->data, fw->size);  in raydium_i2c_do_update_firmware()
808 	error = raydium_i2c_write_checksum(client, fw->size, fw_checksum);  in raydium_i2c_do_update_firmware()
817 	struct i2c_client *client = ts->client;  in raydium_i2c_fw_update()
822 	fw_file = kasprintf(GFP_KERNEL, "raydium_%#04x.fw",  in raydium_i2c_fw_update()
823 			    le32_to_cpu(ts->info.hw_ver));  in raydium_i2c_fw_update()
825 		return -ENOMEM;  in raydium_i2c_fw_update()
827 	dev_dbg(&client->dev, "firmware name: %s\n", fw_file);  in raydium_i2c_fw_update()
829 	error = request_firmware(&fw, fw_file, &client->dev);  in raydium_i2c_fw_update()
831 		dev_err(&client->dev, "Unable to open firmware %s\n", fw_file);  in raydium_i2c_fw_update()
835 	disable_irq(client->irq);  in raydium_i2c_fw_update()
839 		dev_err(&client->dev, "firmware update failed: %d\n", error);  in raydium_i2c_fw_update()
840 		ts->boot_mode = RAYDIUM_TS_BLDR;  in raydium_i2c_fw_update()
846 		dev_err(&client->dev,  in raydium_i2c_fw_update()
849 		ts->boot_mode = RAYDIUM_TS_BLDR;  in raydium_i2c_fw_update()
853 	ts->boot_mode = RAYDIUM_TS_MAIN;  in raydium_i2c_fw_update()
856 	enable_irq(client->irq);  in raydium_i2c_fw_update()
871 	for (i = 0; i < ts->report_size / ts->contact_size; i++) {  in raydium_mt_event()
872 		u8 *contact = &ts->report_data[ts->contact_size * i];  in raydium_mt_event()
876 		input_mt_slot(ts->input, i);  in raydium_mt_event()
877 		input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, state);  in raydium_mt_event()
882 		input_report_abs(ts->input, ABS_MT_POSITION_X,  in raydium_mt_event()
884 		input_report_abs(ts->input, ABS_MT_POSITION_Y,  in raydium_mt_event()
886 		input_report_abs(ts->input, ABS_MT_PRESSURE,  in raydium_mt_event()
892 		input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, max(wx, wy));  in raydium_mt_event()
893 		input_report_abs(ts->input, ABS_MT_TOUCH_MINOR, min(wx, wy));  in raydium_mt_event()
896 	input_mt_sync_frame(ts->input);  in raydium_mt_event()
897 	input_sync(ts->input);  in raydium_mt_event()
907 	if (ts->boot_mode != RAYDIUM_TS_MAIN)  in raydium_i2c_irq()
910 	error = raydium_i2c_read(ts->client, ts->data_bank_addr,  in raydium_i2c_irq()
911 				 ts->report_data, ts->pkg_size);  in raydium_i2c_irq()
915 	fw_crc = get_unaligned_le16(&ts->report_data[ts->report_size]);  in raydium_i2c_irq()
916 	calc_crc = raydium_calc_chksum(ts->report_data, ts->report_size);  in raydium_i2c_irq()
918 		dev_warn(&ts->client->dev,  in raydium_i2c_irq()
919 			 "%s: invalid packet crc %#04x vs %#04x\n",  in raydium_i2c_irq()
936 	return sprintf(buf, "%d.%d\n", ts->info.main_ver, ts->info.sub_ver);  in raydium_i2c_fw_ver_show()
945 	return sprintf(buf, "%#04x\n", le32_to_cpu(ts->info.hw_ver));  in raydium_i2c_hw_ver_show()
956 		       ts->boot_mode == RAYDIUM_TS_MAIN ?  in raydium_i2c_boot_mode_show()
968 	error = mutex_lock_interruptible(&ts->sysfs_mutex);  in raydium_i2c_update_fw_store()
974 	mutex_unlock(&ts->sysfs_mutex);  in raydium_i2c_update_fw_store()
988 	error = mutex_lock_interruptible(&ts->sysfs_mutex);  in raydium_i2c_calibrate_store()
995 		dev_err(&client->dev, "calibrate command failed: %d\n", error);  in raydium_i2c_calibrate_store()
997 	mutex_unlock(&ts->sysfs_mutex);  in raydium_i2c_calibrate_store()
1021 	if (!ts->reset_gpio)  in raydium_i2c_power_on()
1024 	gpiod_set_value_cansleep(ts->reset_gpio, 1);  in raydium_i2c_power_on()
1026 	error = regulator_enable(ts->avdd);  in raydium_i2c_power_on()
1028 		dev_err(&ts->client->dev,  in raydium_i2c_power_on()
1033 	error = regulator_enable(ts->vccio);  in raydium_i2c_power_on()
1035 		regulator_disable(ts->avdd);  in raydium_i2c_power_on()
1036 		dev_err(&ts->client->dev,  in raydium_i2c_power_on()
1044 	gpiod_set_value_cansleep(ts->reset_gpio, 0);  in raydium_i2c_power_on()
1058 	if (ts->reset_gpio) {  in raydium_i2c_power_off()
1059 		gpiod_set_value_cansleep(ts->reset_gpio, 1);  in raydium_i2c_power_off()
1060 		regulator_disable(ts->vccio);  in raydium_i2c_power_off()
1061 		regulator_disable(ts->avdd);  in raydium_i2c_power_off()
1071 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {  in raydium_i2c_probe()
1072 		dev_err(&client->dev,  in raydium_i2c_probe()
1074 		return -ENXIO;  in raydium_i2c_probe()
1077 	ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);  in raydium_i2c_probe()
1079 		return -ENOMEM;  in raydium_i2c_probe()
1081 	mutex_init(&ts->sysfs_mutex);  in raydium_i2c_probe()
1083 	ts->client = client;  in raydium_i2c_probe()
1086 	ts->avdd = devm_regulator_get(&client->dev, "avdd");  in raydium_i2c_probe()
1087 	if (IS_ERR(ts->avdd))  in raydium_i2c_probe()
1088 		return dev_err_probe(&client->dev, PTR_ERR(ts->avdd),  in raydium_i2c_probe()
1091 	ts->vccio = devm_regulator_get(&client->dev, "vccio");  in raydium_i2c_probe()
1092 	if (IS_ERR(ts->vccio))  in raydium_i2c_probe()
1093 		return dev_err_probe(&client->dev, PTR_ERR(ts->vccio),  in raydium_i2c_probe()
1096 	ts->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",  in raydium_i2c_probe()
1098 	if (IS_ERR(ts->reset_gpio))  in raydium_i2c_probe()
1099 		return dev_err_probe(&client->dev, PTR_ERR(ts->reset_gpio),  in raydium_i2c_probe()
1106 	error = devm_add_action_or_reset(&client->dev,  in raydium_i2c_probe()
1109 		dev_err(&client->dev,  in raydium_i2c_probe()
1115 	if (i2c_smbus_xfer(client->adapter, client->addr, 0,  in raydium_i2c_probe()
1117 		dev_err(&client->dev, "nothing at this address\n");  in raydium_i2c_probe()
1118 		return -ENXIO;  in raydium_i2c_probe()
1123 		dev_err(&client->dev, "failed to initialize: %d\n", error);  in raydium_i2c_probe()
1127 	ts->report_data = devm_kmalloc(&client->dev,  in raydium_i2c_probe()
1128 				       ts->pkg_size, GFP_KERNEL);  in raydium_i2c_probe()
1129 	if (!ts->report_data)  in raydium_i2c_probe()
1130 		return -ENOMEM;  in raydium_i2c_probe()
1132 	ts->input = devm_input_allocate_device(&client->dev);  in raydium_i2c_probe()
1133 	if (!ts->input) {  in raydium_i2c_probe()
1134 		dev_err(&client->dev, "Failed to allocate input device\n");  in raydium_i2c_probe()
1135 		return -ENOMEM;  in raydium_i2c_probe()
1138 	ts->input->name = "Raydium Touchscreen";  in raydium_i2c_probe()
1139 	ts->input->id.bustype = BUS_I2C;  in raydium_i2c_probe()
1141 	input_set_abs_params(ts->input, ABS_MT_POSITION_X,  in raydium_i2c_probe()
1142 			     0, le16_to_cpu(ts->info.x_max), 0, 0);  in raydium_i2c_probe()
1143 	input_set_abs_params(ts->input, ABS_MT_POSITION_Y,  in raydium_i2c_probe()
1144 			     0, le16_to_cpu(ts->info.y_max), 0, 0);  in raydium_i2c_probe()
1145 	input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->info.x_res);  in raydium_i2c_probe()
1146 	input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->info.y_res);  in raydium_i2c_probe()
1148 	input_set_abs_params(ts->input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);  in raydium_i2c_probe()
1149 	input_set_abs_params(ts->input, ABS_MT_PRESSURE, 0, 255, 0, 0);  in raydium_i2c_probe()
1151 	error = input_mt_init_slots(ts->input, RM_MAX_TOUCH_NUM,  in raydium_i2c_probe()
1154 		dev_err(&client->dev,  in raydium_i2c_probe()
1159 	error = input_register_device(ts->input);  in raydium_i2c_probe()
1161 		dev_err(&client->dev,  in raydium_i2c_probe()
1166 	error = devm_request_threaded_irq(&client->dev, client->irq,  in raydium_i2c_probe()
1168 					  IRQF_ONESHOT, client->name, ts);  in raydium_i2c_probe()
1170 		dev_err(&client->dev, "Failed to register interrupt\n");  in raydium_i2c_probe()
1185 		dev_err(&client->dev,  in raydium_enter_sleep()
1195 	if (ts->boot_mode != RAYDIUM_TS_MAIN)  in raydium_i2c_suspend()
1196 		return -EBUSY;  in raydium_i2c_suspend()
1198 	disable_irq(client->irq);  in raydium_i2c_suspend()
1221 	enable_irq(client->irq);  in raydium_i2c_resume()
1266 MODULE_DESCRIPTION("Raydium I2c Touchscreen driver");