drivers/hid/hid-mcp2221.c

132 	int ret;
139 	ret = hid_hw_output_report(mcp->hdev, buf, len);
142 	if (ret < 0)
143 		return ret;
155 	int ret;
160 	ret = mcp_send_report(mcp, out_report, len);
161 	if (ret)
162 		return ret;
196 	int ret;
198 	ret = mcp_chk_last_cmd_status(mcp);
199 	if (ret) {
207 	return ret;
212 	int ret;
219 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 8);
220 	if (ret) {
240 	int ret, len, idx, sent;
257 		ret = mcp_send_data_req_status(mcp, mcp->txbuf, len + 4);
258 		if (ret)
259 			return ret;
264 			ret = mcp_chk_last_cmd_status_free_bus(mcp);
265 			if (ret)
266 				return ret;
287 	return ret;
299 	int ret;
318 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 4);
319 	if (ret)
320 		return ret;
331 		ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);
332 		if (ret) {
340 				return ret;
348 	ret = mcp_chk_last_cmd_status_free_bus(mcp);
350 	return ret;
356 	int ret;
365 			ret = mcp_i2c_smbus_read(mcp, msgs, MCP2221_I2C_RD_DATA,
368 			ret = mcp_i2c_write(mcp, msgs, MCP2221_I2C_WR_DATA, 1);
370 		if (ret)
372 		ret = num;
379 			ret = mcp_i2c_write(mcp, &msgs[0],
381 			if (ret)
384 			ret = mcp_i2c_smbus_read(mcp, &msgs[1],
387 			if (ret)
389 			ret = num;
393 			ret = -EOPNOTSUPP;
398 		ret = -EOPNOTSUPP;
404 	return ret;
411 	int data_len, ret;
440 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, data_len);
441 	if (ret)
442 		return ret;
447 		ret = mcp_chk_last_cmd_status_free_bus(mcp);
450 	return ret;
458 	int ret;
469 			ret = mcp_i2c_smbus_read(mcp, NULL, MCP2221_I2C_RD_DATA,
472 			ret = mcp_smbus_write(mcp, addr, command, NULL,
477 			ret = mcp_i2c_smbus_read(mcp, NULL, MCP2221_I2C_RD_DATA,
480 			ret = mcp_smbus_write(mcp, addr, command, NULL,
485 			ret = mcp_smbus_write(mcp, addr, command, NULL,
487 			if (ret)
490 			ret = mcp_i2c_smbus_read(mcp, NULL,
494 			ret = mcp_smbus_write(mcp, addr, command, &data->byte,
500 			ret = mcp_smbus_write(mcp, addr, command, NULL,
502 			if (ret)
505 			ret = mcp_i2c_smbus_read(mcp, NULL,
509 			ret = mcp_smbus_write(mcp, addr, command,
516 			ret = mcp_smbus_write(mcp, addr, command, NULL,
518 			if (ret)
524 			ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);
525 			if (ret)
529 				ret = -EINVAL;
532 			ret = mcp_smbus_write(mcp, addr, command, data->block,
539 			ret = mcp_smbus_write(mcp, addr, command, NULL,
541 			if (ret)
547 			ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);
548 			if (ret)
552 				ret = -EINVAL;
555 			ret = mcp_smbus_write(mcp, addr, command,
561 		ret = mcp_smbus_write(mcp, addr, command,
564 		if (ret)
567 		ret = mcp_i2c_smbus_read(mcp, NULL,
572 		ret = mcp_smbus_write(mcp, addr, command, data->block,
575 		if (ret)
578 		ret = mcp_i2c_smbus_read(mcp, NULL,
586 		ret = -EOPNOTSUPP;
592 	return ret;
613 	int ret;
621 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);
624 	return ret;
662 	int ret;
666 	ret = mcp_gpio_dir_set(mcp, offset, MCP2221_DIR_IN);
669 	return ret;
675 	int ret;
679 	ret = mcp_gpio_dir_set(mcp, offset, MCP2221_DIR_OUT);
683 	if (ret)
684 		return ret;
694 	int ret;
702 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);
705 	if (ret)
706 		return ret;
719 	int ret;
724 		ret = -ENXIO;
730 		ret = -ETIMEDOUT;
733 		ret = -EAGAIN;
736 		ret = 0x00;
739 		ret = -EIO;
742 	return ret;
961 	int ret;
976 		ret = IIO_VAL_INT;
979 		ret = mcp_chk_last_cmd_status(mcp);
981 		if (!ret) {
984 				ret =  -EINVAL;
986 				ret = IIO_VAL_INT;
992 	return ret;
1001 	int ret;
1012 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 12);
1013 	if (!ret)
1018 	return ret;
1069 	int ret, num_channels;
1075 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);
1077 	if (ret == -EAGAIN)
1086 	ret = mcp_send_data_req_status(mcp, mcp->txbuf, 2);
1088 	if (ret == -EAGAIN)
1127 	int ret;
1134 	ret = hid_parse(hdev);
1135 	if (ret) {
1137 		return ret;
1144 	ret = hid_hw_start(hdev, 0);
1145 	if (ret) {
1147 		return ret;
1153 	ret = hid_hw_open(hdev);
1154 	if (ret) {
1157 		return ret;
1165 	ret = devm_add_action_or_reset(&hdev->dev, mcp2221_hid_unregister, hdev);
1166 	if (ret)
1167 		return ret;
1177 	ret = mcp_set_i2c_speed(mcp);
1178 	if (ret) {
1179 		hid_err(hdev, "can't set i2c speed: %d\n", ret);
1180 		return ret;
1193 	ret = devm_i2c_add_adapter(&hdev->dev, &mcp->adapter);
1194 	if (ret) {
1195 		hid_err(hdev, "can't add usb-i2c adapter: %d\n", ret);
1196 		return ret;
1216 	ret = devm_gpiochip_add_data(&hdev->dev, mcp->gc, mcp);
1217 	if (ret)
1218 		return ret;