1 // SPDX-License-Identifier: GPL-2.0-only
4  * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
36 	dev_dbg(&ucr->pusb_intf->dev, "%s: sg transfer timed out", __func__);  in rtsx_usb_sg_timed_out()
37 	usb_sg_cancel(&ucr->current_sg);  in rtsx_usb_sg_timed_out()
46 	dev_dbg(&ucr->pusb_intf->dev, "%s: xfer %u bytes, %d entries\n",  in rtsx_usb_bulk_transfer_sglist()
48 	ret = usb_sg_init(&ucr->current_sg, ucr->pusb_dev, pipe, 0,  in rtsx_usb_bulk_transfer_sglist()
53 	ucr->sg_timer.expires = jiffies + msecs_to_jiffies(timeout);  in rtsx_usb_bulk_transfer_sglist()
54 	add_timer(&ucr->sg_timer);  in rtsx_usb_bulk_transfer_sglist()
55 	usb_sg_wait(&ucr->current_sg);  in rtsx_usb_bulk_transfer_sglist()
56 	if (!del_timer_sync(&ucr->sg_timer))  in rtsx_usb_bulk_transfer_sglist()
57 		ret = -ETIMEDOUT;  in rtsx_usb_bulk_transfer_sglist()
59 		ret = ucr->current_sg.status;  in rtsx_usb_bulk_transfer_sglist()
62 		*act_len = ucr->current_sg.bytes;  in rtsx_usb_bulk_transfer_sglist()
79 		return usb_bulk_msg(ucr->pusb_dev, pipe, buf, len, act_len,  in rtsx_usb_transfer_data()
89 	ucr->cmd_buf[PACKET_TYPE] = seq_type;  in rtsx_usb_seq_cmd_hdr()
90 	ucr->cmd_buf[5] = (u8)(len >> 8);  in rtsx_usb_seq_cmd_hdr()
91 	ucr->cmd_buf[6] = (u8)len;  in rtsx_usb_seq_cmd_hdr()
92 	ucr->cmd_buf[8] = (u8)(addr >> 8);  in rtsx_usb_seq_cmd_hdr()
93 	ucr->cmd_buf[9] = (u8)addr;  in rtsx_usb_seq_cmd_hdr()
96 		ucr->cmd_buf[STAGE_FLAG] = 0;  in rtsx_usb_seq_cmd_hdr()
98 		ucr->cmd_buf[STAGE_FLAG] = STAGE_R;  in rtsx_usb_seq_cmd_hdr()
107 		return -EINVAL;  in rtsx_usb_seq_write_register()
110 		return -EINVAL;  in rtsx_usb_seq_write_register()
113 	memcpy(ucr->cmd_buf + SEQ_WRITE_DATA_OFFSET, data, len);  in rtsx_usb_seq_write_register()
116 			usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT),  in rtsx_usb_seq_write_register()
117 			ucr->cmd_buf, cmd_len, 0, NULL, 100);  in rtsx_usb_seq_write_register()
125 	u16 res_len = len - rsp_len;  in rtsx_usb_seq_read_register()
128 		return -EINVAL;  in rtsx_usb_seq_read_register()
130 	/* 4-byte aligned part */  in rtsx_usb_seq_read_register()
134 				usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT),  in rtsx_usb_seq_read_register()
135 				ucr->cmd_buf, 12, 0, NULL, 100);  in rtsx_usb_seq_read_register()
140 				usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN),  in rtsx_usb_seq_read_register()
178 	return usb_control_msg(ucr->pusb_dev,  in rtsx_usb_ep0_write_register()
179 			usb_sndctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_REG_OP,  in rtsx_usb_ep0_write_register()
192 		return -EINVAL;  in rtsx_usb_ep0_read_register()
196 		return -ENOMEM;  in rtsx_usb_ep0_read_register()
201 	ret = usb_control_msg(ucr->pusb_dev,  in rtsx_usb_ep0_read_register()
202 			usb_rcvctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_REG_OP,  in rtsx_usb_ep0_read_register()
217 	if (ucr->cmd_idx < (IOBUF_SIZE - CMD_OFFSET) / 4) {  in rtsx_usb_add_cmd()
218 		i = CMD_OFFSET + ucr->cmd_idx * 4;  in rtsx_usb_add_cmd()
220 		ucr->cmd_buf[i++] = ((cmd_type & 0x03) << 6) |  in rtsx_usb_add_cmd()
222 		ucr->cmd_buf[i++] = (u8)reg_addr;  in rtsx_usb_add_cmd()
223 		ucr->cmd_buf[i++] = mask;  in rtsx_usb_add_cmd()
224 		ucr->cmd_buf[i++] = data;  in rtsx_usb_add_cmd()
226 		ucr->cmd_idx++;  in rtsx_usb_add_cmd()
235 	ucr->cmd_buf[CNT_H] = (u8)(ucr->cmd_idx >> 8);  in rtsx_usb_send_cmd()
236 	ucr->cmd_buf[CNT_L] = (u8)(ucr->cmd_idx);  in rtsx_usb_send_cmd()
237 	ucr->cmd_buf[STAGE_FLAG] = flag;  in rtsx_usb_send_cmd()
240 			usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT),  in rtsx_usb_send_cmd()
241 			ucr->cmd_buf, ucr->cmd_idx * 4 + CMD_OFFSET,  in rtsx_usb_send_cmd()
255 		return -EINVAL;  in rtsx_usb_get_rsp()
260 			usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN),  in rtsx_usb_get_rsp()
261 			ucr->rsp_buf, rsp_len, 0, NULL, timeout);  in rtsx_usb_get_rsp()
280 	*status = ((ucr->rsp_buf[0] >> 2) & 0x0f) |  in rtsx_usb_get_status_with_bulk()
281 		  ((ucr->rsp_buf[1] & 0x03) << 4);  in rtsx_usb_get_status_with_bulk()
292 		return -EINVAL;  in rtsx_usb_get_card_status()
297 			return -ENOMEM;  in rtsx_usb_get_card_status()
299 		ret = usb_control_msg(ucr->pusb_dev,  in rtsx_usb_get_card_status()
300 				usb_rcvctrlpipe(ucr->pusb_dev, 0),  in rtsx_usb_get_card_status()
321 	dev_dbg(&ucr->pusb_intf->dev, "Write 0x%x to phy register 0x%x\n",  in rtsx_usb_write_phy_register()
366 		*data = ucr->rsp_buf[0];  in rtsx_usb_read_register()
374 	return (depth > 1) ? (depth - 1) : depth;  in double_ssc_depth()
380 		if (ssc_depth > div - 1)  in revise_ssc_depth()
381 			ssc_depth -= (div - 1);  in revise_ssc_depth()
396 		ucr->cur_clk = 0;  in rtsx_usb_switch_clock()
414 	dev_dbg(&ucr->pusb_intf->dev,  in rtsx_usb_switch_clock()
419 	dev_dbg(&ucr->pusb_intf->dev,  in rtsx_usb_switch_clock()
420 			"Internal SSC clock: %dMHz (cur_clk = %d)\n",  in rtsx_usb_switch_clock()
421 			card_clock, ucr->cur_clk);  in rtsx_usb_switch_clock()
423 	if (card_clock == ucr->cur_clk)  in rtsx_usb_switch_clock()
426 	/* Converting clock value into internal settings: n and div */  in rtsx_usb_switch_clock()
427 	n = card_clock - 2;  in rtsx_usb_switch_clock()
429 		return -EINVAL;  in rtsx_usb_switch_clock()
435 	/* Make sure that the SSC clock div_n is not less than MIN_DIV_N */  in rtsx_usb_switch_clock()
439 		n = (n + 2) * 2 - 2;  in rtsx_usb_switch_clock()
442 	dev_dbg(&ucr->pusb_intf->dev, "n = %d, div = %d\n", n, div);  in rtsx_usb_switch_clock()
448 	dev_dbg(&ucr->pusb_intf->dev, "ssc_depth = %d\n", ssc_depth);  in rtsx_usb_switch_clock()
475 	/* Wait SSC clock stable */  in rtsx_usb_switch_clock()
482 	ucr->cur_clk = card_clock;  in rtsx_usb_switch_clock()
506 		return -EIO;  in rtsx_usb_card_exclusive_check()
542 	if (ucr->is_rts5179)  in rtsx_usb_reset_chip()
556 	/* config non-crystal mode */  in rtsx_usb_reset_chip()
574 	/* power on SSC */  in rtsx_usb_init_chip()
590 	ucr->ic_version = val & HW_VER_MASK;  in rtsx_usb_init_chip()
598 		ucr->package = LQFP48;  in rtsx_usb_init_chip()
599 		dev_dbg(&ucr->pusb_intf->dev, "Package: LQFP48\n");  in rtsx_usb_init_chip()
601 		ucr->package = QFN24;  in rtsx_usb_init_chip()
602 		dev_dbg(&ucr->pusb_intf->dev, "Package: QFN24\n");  in rtsx_usb_init_chip()
608 		ucr->is_rts5179 = true;  in rtsx_usb_init_chip()
609 		dev_dbg(&ucr->pusb_intf->dev, "Device is rts5179\n");  in rtsx_usb_init_chip()
611 		ucr->is_rts5179 = false;  in rtsx_usb_init_chip()
624 	dev_dbg(&intf->dev,  in rtsx_usb_probe()
626 		 usb_dev->bus->busnum, usb_dev->devnum);  in rtsx_usb_probe()
628 	ucr = devm_kzalloc(&intf->dev, sizeof(*ucr), GFP_KERNEL);  in rtsx_usb_probe()
630 		return -ENOMEM;  in rtsx_usb_probe()
632 	ucr->pusb_dev = usb_dev;  in rtsx_usb_probe()
634 	ucr->cmd_buf = kmalloc(IOBUF_SIZE, GFP_KERNEL);  in rtsx_usb_probe()
635 	if (!ucr->cmd_buf)  in rtsx_usb_probe()
636 		return -ENOMEM;  in rtsx_usb_probe()
638 	ucr->rsp_buf = kmalloc(IOBUF_SIZE, GFP_KERNEL);  in rtsx_usb_probe()
639 	if (!ucr->rsp_buf) {  in rtsx_usb_probe()
640 		ret = -ENOMEM;  in rtsx_usb_probe()
646 	ucr->vendor_id = id->idVendor;  in rtsx_usb_probe()
647 	ucr->product_id = id->idProduct;  in rtsx_usb_probe()
649 	mutex_init(&ucr->dev_mutex);  in rtsx_usb_probe()
651 	ucr->pusb_intf = intf;  in rtsx_usb_probe()
659 	timer_setup(&ucr->sg_timer, rtsx_usb_sg_timed_out, 0);  in rtsx_usb_probe()
661 	ret = mfd_add_hotplug_devices(&intf->dev, rtsx_usb_cells,  in rtsx_usb_probe()
667 	intf->needs_remote_wakeup = 1;  in rtsx_usb_probe()
674 	usb_set_intfdata(ucr->pusb_intf, NULL);  in rtsx_usb_probe()
675 	kfree(ucr->rsp_buf);  in rtsx_usb_probe()
676 	ucr->rsp_buf = NULL;  in rtsx_usb_probe()
678 	kfree(ucr->cmd_buf);  in rtsx_usb_probe()
679 	ucr->cmd_buf = NULL;  in rtsx_usb_probe()
687 	dev_dbg(&intf->dev, "%s called\n", __func__);  in rtsx_usb_disconnect()
689 	mfd_remove_devices(&intf->dev);  in rtsx_usb_disconnect()
691 	usb_set_intfdata(ucr->pusb_intf, NULL);  in rtsx_usb_disconnect()
693 	kfree(ucr->cmd_buf);  in rtsx_usb_disconnect()
694 	ucr->cmd_buf = NULL;  in rtsx_usb_disconnect()
696 	kfree(ucr->rsp_buf);  in rtsx_usb_disconnect()
697 	ucr->rsp_buf = NULL;  in rtsx_usb_disconnect()
707 	dev_dbg(&intf->dev, "%s called with pm message 0x%04x\n",  in rtsx_usb_suspend()
711 		if (mutex_trylock(&ucr->dev_mutex)) {  in rtsx_usb_suspend()
713 			mutex_unlock(&ucr->dev_mutex);  in rtsx_usb_suspend()
717 				return -EAGAIN;  in rtsx_usb_suspend()
720 			return -EAGAIN;  in rtsx_usb_suspend()
735 	device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child);  in rtsx_usb_resume()
745 	device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child);  in rtsx_usb_reset_resume()
762 	mutex_lock(&ucr->dev_mutex);  in rtsx_usb_pre_reset()
770 	mutex_unlock(&ucr->dev_mutex);  in rtsx_usb_post_reset()