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1/* Driver for Realtek RTS51xx USB card reader
2 *
3 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
8 * later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, see <http://www.gnu.org/licenses/>.
17 *
18 * Author:
19 * wwang (wei_wang@realsil.com.cn)
20 * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
21 */
22
23#include <linux/module.h>
24#include <linux/blkdev.h>
25#include <linux/kthread.h>
26#include <linux/sched.h>
27#include <linux/kernel.h>
28
29#include <scsi/scsi.h>
30#include <scsi/scsi_cmnd.h>
31#include <scsi/scsi_device.h>
32#include <linux/cdrom.h>
33
34#include <linux/usb.h>
35#include <linux/slab.h>
36#include <linux/usb_usual.h>
37
38#include "usb.h"
39#include "transport.h"
40#include "protocol.h"
41#include "debug.h"
42#include "scsiglue.h"
43
44#define DRV_NAME "ums-realtek"
45
46MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
47MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
48MODULE_LICENSE("GPL");
49MODULE_VERSION("1.03");
50
51static int auto_delink_en = 1;
52module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
53MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
54
55#ifdef CONFIG_REALTEK_AUTOPM
56static int ss_en = 1;
57module_param(ss_en, int, S_IRUGO | S_IWUSR);
58MODULE_PARM_DESC(ss_en, "enable selective suspend");
59
60static int ss_delay = 50;
61module_param(ss_delay, int, S_IRUGO | S_IWUSR);
62MODULE_PARM_DESC(ss_delay,
63 "seconds to delay before entering selective suspend");
64
65enum RTS51X_STAT {
66 RTS51X_STAT_INIT,
67 RTS51X_STAT_IDLE,
68 RTS51X_STAT_RUN,
69 RTS51X_STAT_SS
70};
71
72#define POLLING_INTERVAL 50
73
74#define rts51x_set_stat(chip, stat) \
75 ((chip)->state = (enum RTS51X_STAT)(stat))
76#define rts51x_get_stat(chip) ((chip)->state)
77
78#define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun)))
79#define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun)))
80#define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun)))
81
82#endif
83
84struct rts51x_status {
85 u16 vid;
86 u16 pid;
87 u8 cur_lun;
88 u8 card_type;
89 u8 total_lun;
90 u16 fw_ver;
91 u8 phy_exist;
92 u8 multi_flag;
93 u8 multi_card;
94 u8 log_exist;
95 union {
96 u8 detailed_type1;
97 u8 detailed_type2;
98 } detailed_type;
99 u8 function[2];
100};
101
102struct rts51x_chip {
103 u16 vendor_id;
104 u16 product_id;
105 char max_lun;
106
107 struct rts51x_status *status;
108 int status_len;
109
110 u32 flag;
111 struct us_data *us;
112
113#ifdef CONFIG_REALTEK_AUTOPM
114 struct timer_list rts51x_suspend_timer;
115 unsigned long timer_expires;
116 int pwr_state;
117 u8 lun_ready;
118 enum RTS51X_STAT state;
119 int support_auto_delink;
120#endif
121 /* used to back up the protocol chosen in probe1 phase */
122 proto_cmnd proto_handler_backup;
123};
124
125/* flag definition */
126#define FLIDX_AUTO_DELINK 0x01
127
128#define SCSI_LUN(srb) ((srb)->device->lun)
129
130/* Bit Operation */
131#define SET_BIT(data, idx) ((data) |= 1 << (idx))
132#define CLR_BIT(data, idx) ((data) &= ~(1 << (idx)))
133#define CHK_BIT(data, idx) ((data) & (1 << (idx)))
134
135#define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK)
136#define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK)
137#define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK)
138
139#define RTS51X_GET_VID(chip) ((chip)->vendor_id)
140#define RTS51X_GET_PID(chip) ((chip)->product_id)
141
142#define VENDOR_ID(chip) ((chip)->status[0].vid)
143#define PRODUCT_ID(chip) ((chip)->status[0].pid)
144#define FW_VERSION(chip) ((chip)->status[0].fw_ver)
145#define STATUS_LEN(chip) ((chip)->status_len)
146
147#define STATUS_SUCCESS 0
148#define STATUS_FAIL 1
149
150/* Check card reader function */
151#define SUPPORT_DETAILED_TYPE1(chip) \
152 CHK_BIT((chip)->status[0].function[0], 1)
153#define SUPPORT_OT(chip) \
154 CHK_BIT((chip)->status[0].function[0], 2)
155#define SUPPORT_OC(chip) \
156 CHK_BIT((chip)->status[0].function[0], 3)
157#define SUPPORT_AUTO_DELINK(chip) \
158 CHK_BIT((chip)->status[0].function[0], 4)
159#define SUPPORT_SDIO(chip) \
160 CHK_BIT((chip)->status[0].function[1], 0)
161#define SUPPORT_DETAILED_TYPE2(chip) \
162 CHK_BIT((chip)->status[0].function[1], 1)
163
164#define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid))
165#define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver))
166#define CHECK_ID(chip, pid, fw_ver) \
167 (CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
168
169static int init_realtek_cr(struct us_data *us);
170
171/*
172 * The table of devices
173 */
174#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
175 vendorName, productName, useProtocol, useTransport, \
176 initFunction, flags) \
177{\
178 USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
179 .driver_info = (flags) \
180}
181
182static const struct usb_device_id realtek_cr_ids[] = {
183# include "unusual_realtek.h"
184 {} /* Terminating entry */
185};
186
187MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
188
189#undef UNUSUAL_DEV
190
191/*
192 * The flags table
193 */
194#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
195 vendor_name, product_name, use_protocol, use_transport, \
196 init_function, Flags) \
197{ \
198 .vendorName = vendor_name, \
199 .productName = product_name, \
200 .useProtocol = use_protocol, \
201 .useTransport = use_transport, \
202 .initFunction = init_function, \
203}
204
205static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
206# include "unusual_realtek.h"
207 {} /* Terminating entry */
208};
209
210#undef UNUSUAL_DEV
211
212static int rts51x_bulk_transport(struct us_data *us, u8 lun,
213 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
214 enum dma_data_direction dir, int *act_len)
215{
216 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
217 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
218 int result;
219 unsigned int residue;
220 unsigned int cswlen;
221 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
222
223 /* set up the command wrapper */
224 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
225 bcb->DataTransferLength = cpu_to_le32(buf_len);
226 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
227 bcb->Tag = ++us->tag;
228 bcb->Lun = lun;
229 bcb->Length = cmd_len;
230
231 /* copy the command payload */
232 memset(bcb->CDB, 0, sizeof(bcb->CDB));
233 memcpy(bcb->CDB, cmd, bcb->Length);
234
235 /* send it to out endpoint */
236 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
237 bcb, cbwlen, NULL);
238 if (result != USB_STOR_XFER_GOOD)
239 return USB_STOR_TRANSPORT_ERROR;
240
241 /* DATA STAGE */
242 /* send/receive data payload, if there is any */
243
244 if (buf && buf_len) {
245 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
246 us->recv_bulk_pipe : us->send_bulk_pipe;
247 result = usb_stor_bulk_transfer_buf(us, pipe,
248 buf, buf_len, NULL);
249 if (result == USB_STOR_XFER_ERROR)
250 return USB_STOR_TRANSPORT_ERROR;
251 }
252
253 /* get CSW for device status */
254 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
255 bcs, US_BULK_CS_WRAP_LEN, &cswlen);
256 if (result != USB_STOR_XFER_GOOD)
257 return USB_STOR_TRANSPORT_ERROR;
258
259 /* check bulk status */
260 if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
261 usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n",
262 le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
263 return USB_STOR_TRANSPORT_ERROR;
264 }
265
266 residue = bcs->Residue;
267 if (bcs->Tag != us->tag)
268 return USB_STOR_TRANSPORT_ERROR;
269
270 /* try to compute the actual residue, based on how much data
271 * was really transferred and what the device tells us */
272 if (residue)
273 residue = residue < buf_len ? residue : buf_len;
274
275 if (act_len)
276 *act_len = buf_len - residue;
277
278 /* based on the status code, we report good or bad */
279 switch (bcs->Status) {
280 case US_BULK_STAT_OK:
281 /* command good -- note that data could be short */
282 return USB_STOR_TRANSPORT_GOOD;
283
284 case US_BULK_STAT_FAIL:
285 /* command failed */
286 return USB_STOR_TRANSPORT_FAILED;
287
288 case US_BULK_STAT_PHASE:
289 /* phase error -- note that a transport reset will be
290 * invoked by the invoke_transport() function
291 */
292 return USB_STOR_TRANSPORT_ERROR;
293 }
294
295 /* we should never get here, but if we do, we're in trouble */
296 return USB_STOR_TRANSPORT_ERROR;
297}
298
299static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
300 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
301 enum dma_data_direction dir, int *act_len)
302{
303 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
304 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
305 int result;
306 unsigned int cswlen;
307 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
308
309 /* set up the command wrapper */
310 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
311 bcb->DataTransferLength = cpu_to_le32(buf_len);
312 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
313 bcb->Tag = ++us->tag;
314 bcb->Lun = lun;
315 bcb->Length = cmd_len;
316
317 /* copy the command payload */
318 memset(bcb->CDB, 0, sizeof(bcb->CDB));
319 memcpy(bcb->CDB, cmd, bcb->Length);
320
321 /* send it to out endpoint */
322 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
323 bcb, cbwlen, NULL);
324 if (result != USB_STOR_XFER_GOOD)
325 return USB_STOR_TRANSPORT_ERROR;
326
327 /* DATA STAGE */
328 /* send/receive data payload, if there is any */
329
330 if (buf && buf_len) {
331 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
332 us->recv_bulk_pipe : us->send_bulk_pipe;
333 result = usb_stor_bulk_transfer_buf(us, pipe,
334 buf, buf_len, NULL);
335 if (result == USB_STOR_XFER_ERROR)
336 return USB_STOR_TRANSPORT_ERROR;
337 }
338
339 /* get CSW for device status */
340 result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs,
341 US_BULK_CS_WRAP_LEN, &cswlen, 250);
342 return result;
343}
344
345/* Determine what the maximum LUN supported is */
346static int rts51x_get_max_lun(struct us_data *us)
347{
348 int result;
349
350 /* issue the command */
351 us->iobuf[0] = 0;
352 result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
353 US_BULK_GET_MAX_LUN,
354 USB_DIR_IN | USB_TYPE_CLASS |
355 USB_RECIP_INTERFACE,
356 0, us->ifnum, us->iobuf, 1, 10 * HZ);
357
358 usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n",
359 result, us->iobuf[0]);
360
361 /* if we have a successful request, return the result */
362 if (result > 0)
363 return us->iobuf[0];
364
365 return 0;
366}
367
368static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
369{
370 int retval;
371 u8 cmnd[12] = { 0 };
372 u8 *buf;
373
374 buf = kmalloc(len, GFP_NOIO);
375 if (buf == NULL)
376 return USB_STOR_TRANSPORT_ERROR;
377
378 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
379
380 cmnd[0] = 0xF0;
381 cmnd[1] = 0x0D;
382 cmnd[2] = (u8) (addr >> 8);
383 cmnd[3] = (u8) addr;
384 cmnd[4] = (u8) (len >> 8);
385 cmnd[5] = (u8) len;
386
387 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
388 buf, len, DMA_FROM_DEVICE, NULL);
389 if (retval != USB_STOR_TRANSPORT_GOOD) {
390 kfree(buf);
391 return -EIO;
392 }
393
394 memcpy(data, buf, len);
395 kfree(buf);
396 return 0;
397}
398
399static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
400{
401 int retval;
402 u8 cmnd[12] = { 0 };
403 u8 *buf;
404
405 buf = kmemdup(data, len, GFP_NOIO);
406 if (buf == NULL)
407 return USB_STOR_TRANSPORT_ERROR;
408
409 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
410
411 cmnd[0] = 0xF0;
412 cmnd[1] = 0x0E;
413 cmnd[2] = (u8) (addr >> 8);
414 cmnd[3] = (u8) addr;
415 cmnd[4] = (u8) (len >> 8);
416 cmnd[5] = (u8) len;
417
418 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
419 buf, len, DMA_TO_DEVICE, NULL);
420 kfree(buf);
421 if (retval != USB_STOR_TRANSPORT_GOOD)
422 return -EIO;
423
424 return 0;
425}
426
427static int rts51x_read_status(struct us_data *us,
428 u8 lun, u8 *status, int len, int *actlen)
429{
430 int retval;
431 u8 cmnd[12] = { 0 };
432 u8 *buf;
433
434 buf = kmalloc(len, GFP_NOIO);
435 if (buf == NULL)
436 return USB_STOR_TRANSPORT_ERROR;
437
438 usb_stor_dbg(us, "lun = %d\n", lun);
439
440 cmnd[0] = 0xF0;
441 cmnd[1] = 0x09;
442
443 retval = rts51x_bulk_transport(us, lun, cmnd, 12,
444 buf, len, DMA_FROM_DEVICE, actlen);
445 if (retval != USB_STOR_TRANSPORT_GOOD) {
446 kfree(buf);
447 return -EIO;
448 }
449
450 memcpy(status, buf, len);
451 kfree(buf);
452 return 0;
453}
454
455static int rts51x_check_status(struct us_data *us, u8 lun)
456{
457 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
458 int retval;
459 u8 buf[16];
460
461 retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
462 if (retval != STATUS_SUCCESS)
463 return -EIO;
464
465 usb_stor_dbg(us, "chip->status_len = %d\n", chip->status_len);
466
467 chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
468 chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
469 chip->status[lun].cur_lun = buf[4];
470 chip->status[lun].card_type = buf[5];
471 chip->status[lun].total_lun = buf[6];
472 chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
473 chip->status[lun].phy_exist = buf[9];
474 chip->status[lun].multi_flag = buf[10];
475 chip->status[lun].multi_card = buf[11];
476 chip->status[lun].log_exist = buf[12];
477 if (chip->status_len == 16) {
478 chip->status[lun].detailed_type.detailed_type1 = buf[13];
479 chip->status[lun].function[0] = buf[14];
480 chip->status[lun].function[1] = buf[15];
481 }
482
483 return 0;
484}
485
486static int enable_oscillator(struct us_data *us)
487{
488 int retval;
489 u8 value;
490
491 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
492 if (retval < 0)
493 return -EIO;
494
495 value |= 0x04;
496 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
497 if (retval < 0)
498 return -EIO;
499
500 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
501 if (retval < 0)
502 return -EIO;
503
504 if (!(value & 0x04))
505 return -EIO;
506
507 return 0;
508}
509
510static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
511{
512 int retval;
513 u8 cmnd[12] = {0};
514 u8 *buf;
515
516 usb_stor_dbg(us, "addr = 0xfe47, len = %d\n", len);
517
518 buf = kmemdup(data, len, GFP_NOIO);
519 if (!buf)
520 return USB_STOR_TRANSPORT_ERROR;
521
522 cmnd[0] = 0xF0;
523 cmnd[1] = 0x0E;
524 cmnd[2] = 0xfe;
525 cmnd[3] = 0x47;
526 cmnd[4] = (u8)(len >> 8);
527 cmnd[5] = (u8)len;
528
529 retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL);
530 kfree(buf);
531 if (retval != USB_STOR_TRANSPORT_GOOD) {
532 return -EIO;
533 }
534
535 return 0;
536}
537
538static int do_config_autodelink(struct us_data *us, int enable, int force)
539{
540 int retval;
541 u8 value;
542
543 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
544 if (retval < 0)
545 return -EIO;
546
547 if (enable) {
548 if (force)
549 value |= 0x03;
550 else
551 value |= 0x01;
552 } else {
553 value &= ~0x03;
554 }
555
556 usb_stor_dbg(us, "set 0xfe47 to 0x%x\n", value);
557
558 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
559 retval = __do_config_autodelink(us, &value, 1);
560 if (retval < 0)
561 return -EIO;
562
563 return 0;
564}
565
566static int config_autodelink_after_power_on(struct us_data *us)
567{
568 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
569 int retval;
570 u8 value;
571
572 if (!CHK_AUTO_DELINK(chip))
573 return 0;
574
575 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
576 if (retval < 0)
577 return -EIO;
578
579 if (auto_delink_en) {
580 CLR_BIT(value, 0);
581 CLR_BIT(value, 1);
582 SET_BIT(value, 2);
583
584 if (CHECK_ID(chip, 0x0138, 0x3882))
585 CLR_BIT(value, 2);
586
587 SET_BIT(value, 7);
588
589 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
590 retval = __do_config_autodelink(us, &value, 1);
591 if (retval < 0)
592 return -EIO;
593
594 retval = enable_oscillator(us);
595 if (retval == 0)
596 (void)do_config_autodelink(us, 1, 0);
597 } else {
598 /* Autodelink controlled by firmware */
599
600 SET_BIT(value, 2);
601
602 if (CHECK_ID(chip, 0x0138, 0x3882))
603 CLR_BIT(value, 2);
604
605 if (CHECK_ID(chip, 0x0159, 0x5889) ||
606 CHECK_ID(chip, 0x0138, 0x3880)) {
607 CLR_BIT(value, 0);
608 CLR_BIT(value, 7);
609 }
610
611 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
612 retval = __do_config_autodelink(us, &value, 1);
613 if (retval < 0)
614 return -EIO;
615
616 if (CHECK_ID(chip, 0x0159, 0x5888)) {
617 value = 0xFF;
618 retval = rts51x_write_mem(us, 0xFE79, &value, 1);
619 if (retval < 0)
620 return -EIO;
621
622 value = 0x01;
623 retval = rts51x_write_mem(us, 0x48, &value, 1);
624 if (retval < 0)
625 return -EIO;
626 }
627 }
628
629 return 0;
630}
631
632#ifdef CONFIG_PM
633static int config_autodelink_before_power_down(struct us_data *us)
634{
635 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
636 int retval;
637 u8 value;
638
639 if (!CHK_AUTO_DELINK(chip))
640 return 0;
641
642 if (auto_delink_en) {
643 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
644 if (retval < 0)
645 return -EIO;
646
647 SET_BIT(value, 2);
648 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
649 if (retval < 0)
650 return -EIO;
651
652 if (CHECK_ID(chip, 0x0159, 0x5888)) {
653 value = 0x01;
654 retval = rts51x_write_mem(us, 0x48, &value, 1);
655 if (retval < 0)
656 return -EIO;
657 }
658
659 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
660 if (retval < 0)
661 return -EIO;
662
663 SET_BIT(value, 0);
664 if (CHECK_ID(chip, 0x0138, 0x3882))
665 SET_BIT(value, 2);
666 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
667 if (retval < 0)
668 return -EIO;
669 } else {
670 if (CHECK_ID(chip, 0x0159, 0x5889) ||
671 CHECK_ID(chip, 0x0138, 0x3880) ||
672 CHECK_ID(chip, 0x0138, 0x3882)) {
673 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
674 if (retval < 0)
675 return -EIO;
676
677 if (CHECK_ID(chip, 0x0159, 0x5889) ||
678 CHECK_ID(chip, 0x0138, 0x3880)) {
679 SET_BIT(value, 0);
680 SET_BIT(value, 7);
681 }
682
683 if (CHECK_ID(chip, 0x0138, 0x3882))
684 SET_BIT(value, 2);
685
686 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
687 retval = __do_config_autodelink(us, &value, 1);
688 if (retval < 0)
689 return -EIO;
690 }
691
692 if (CHECK_ID(chip, 0x0159, 0x5888)) {
693 value = 0x01;
694 retval = rts51x_write_mem(us, 0x48, &value, 1);
695 if (retval < 0)
696 return -EIO;
697 }
698 }
699
700 return 0;
701}
702
703static void fw5895_init(struct us_data *us)
704{
705 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
706 int retval;
707 u8 val;
708
709 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
710 usb_stor_dbg(us, "Not the specified device, return immediately!\n");
711 } else {
712 retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
713 if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
714 val = 0x1F;
715 retval = rts51x_write_mem(us, 0xFD70, &val, 1);
716 if (retval != STATUS_SUCCESS)
717 usb_stor_dbg(us, "Write memory fail\n");
718 } else {
719 usb_stor_dbg(us, "Read memory fail, OR (val & 0x1F) != 0\n");
720 }
721 }
722}
723#endif
724
725#ifdef CONFIG_REALTEK_AUTOPM
726static void fw5895_set_mmc_wp(struct us_data *us)
727{
728 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
729 int retval;
730 u8 buf[13];
731
732 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
733 usb_stor_dbg(us, "Not the specified device, return immediately!\n");
734 } else {
735 retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
736 if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
737 /* SD Exist and SD WP */
738 retval = rts51x_read_mem(us, 0xD04E, buf, 1);
739 if (retval == STATUS_SUCCESS) {
740 buf[0] |= 0x04;
741 retval = rts51x_write_mem(us, 0xFD70, buf, 1);
742 if (retval != STATUS_SUCCESS)
743 usb_stor_dbg(us, "Write memory fail\n");
744 } else {
745 usb_stor_dbg(us, "Read memory fail\n");
746 }
747 } else {
748 usb_stor_dbg(us, "Read memory fail, OR (buf[0]&0x24)!=0x24\n");
749 }
750 }
751}
752
753static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
754{
755 struct us_data *us = chip->us;
756
757 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
758
759 chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
760 mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
761}
762
763static void rts51x_suspend_timer_fn(unsigned long data)
764{
765 struct rts51x_chip *chip = (struct rts51x_chip *)data;
766 struct us_data *us = chip->us;
767
768 switch (rts51x_get_stat(chip)) {
769 case RTS51X_STAT_INIT:
770 case RTS51X_STAT_RUN:
771 rts51x_modi_suspend_timer(chip);
772 break;
773 case RTS51X_STAT_IDLE:
774 case RTS51X_STAT_SS:
775 usb_stor_dbg(us, "RTS51X_STAT_SS, intf->pm_usage_cnt:%d, power.usage:%d\n",
776 atomic_read(&us->pusb_intf->pm_usage_cnt),
777 atomic_read(&us->pusb_intf->dev.power.usage_count));
778
779 if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
780 usb_stor_dbg(us, "Ready to enter SS state\n");
781 rts51x_set_stat(chip, RTS51X_STAT_SS);
782 /* ignore mass storage interface's children */
783 pm_suspend_ignore_children(&us->pusb_intf->dev, true);
784 usb_autopm_put_interface_async(us->pusb_intf);
785 usb_stor_dbg(us, "RTS51X_STAT_SS 01, intf->pm_usage_cnt:%d, power.usage:%d\n",
786 atomic_read(&us->pusb_intf->pm_usage_cnt),
787 atomic_read(&us->pusb_intf->dev.power.usage_count));
788 }
789 break;
790 default:
791 usb_stor_dbg(us, "Unknown state !!!\n");
792 break;
793 }
794}
795
796static inline int working_scsi(struct scsi_cmnd *srb)
797{
798 if ((srb->cmnd[0] == TEST_UNIT_READY) ||
799 (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
800 return 0;
801 }
802
803 return 1;
804}
805
806static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
807{
808 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
809 static int card_first_show = 1;
810 static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
811 10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
812 };
813 static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
814 10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
815 };
816 int ret;
817
818 if (working_scsi(srb)) {
819 usb_stor_dbg(us, "working scsi, intf->pm_usage_cnt:%d, power.usage:%d\n",
820 atomic_read(&us->pusb_intf->pm_usage_cnt),
821 atomic_read(&us->pusb_intf->dev.power.usage_count));
822
823 if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
824 ret = usb_autopm_get_interface(us->pusb_intf);
825 usb_stor_dbg(us, "working scsi, ret=%d\n", ret);
826 }
827 if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
828 rts51x_set_stat(chip, RTS51X_STAT_RUN);
829 chip->proto_handler_backup(srb, us);
830 } else {
831 if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
832 usb_stor_dbg(us, "NOT working scsi\n");
833 if ((srb->cmnd[0] == TEST_UNIT_READY) &&
834 (chip->pwr_state == US_SUSPEND)) {
835 if (TST_LUN_READY(chip, srb->device->lun)) {
836 srb->result = SAM_STAT_GOOD;
837 } else {
838 srb->result = SAM_STAT_CHECK_CONDITION;
839 memcpy(srb->sense_buffer,
840 media_not_present,
841 US_SENSE_SIZE);
842 }
843 usb_stor_dbg(us, "TEST_UNIT_READY\n");
844 goto out;
845 }
846 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
847 int prevent = srb->cmnd[4] & 0x1;
848 if (prevent) {
849 srb->result = SAM_STAT_CHECK_CONDITION;
850 memcpy(srb->sense_buffer,
851 invalid_cmd_field,
852 US_SENSE_SIZE);
853 } else {
854 srb->result = SAM_STAT_GOOD;
855 }
856 usb_stor_dbg(us, "ALLOW_MEDIUM_REMOVAL\n");
857 goto out;
858 }
859 } else {
860 usb_stor_dbg(us, "NOT working scsi, not SS\n");
861 chip->proto_handler_backup(srb, us);
862 /* Check whether card is plugged in */
863 if (srb->cmnd[0] == TEST_UNIT_READY) {
864 if (srb->result == SAM_STAT_GOOD) {
865 SET_LUN_READY(chip, srb->device->lun);
866 if (card_first_show) {
867 card_first_show = 0;
868 fw5895_set_mmc_wp(us);
869 }
870 } else {
871 CLR_LUN_READY(chip, srb->device->lun);
872 card_first_show = 1;
873 }
874 }
875 if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
876 rts51x_set_stat(chip, RTS51X_STAT_IDLE);
877 }
878 }
879out:
880 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
881 if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
882 rts51x_modi_suspend_timer(chip);
883}
884
885static int realtek_cr_autosuspend_setup(struct us_data *us)
886{
887 struct rts51x_chip *chip;
888 struct rts51x_status *status = NULL;
889 u8 buf[16];
890 int retval;
891
892 chip = (struct rts51x_chip *)us->extra;
893 chip->support_auto_delink = 0;
894 chip->pwr_state = US_RESUME;
895 chip->lun_ready = 0;
896 rts51x_set_stat(chip, RTS51X_STAT_INIT);
897
898 retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
899 if (retval != STATUS_SUCCESS) {
900 usb_stor_dbg(us, "Read status fail\n");
901 return -EIO;
902 }
903 status = chip->status;
904 status->vid = ((u16) buf[0] << 8) | buf[1];
905 status->pid = ((u16) buf[2] << 8) | buf[3];
906 status->cur_lun = buf[4];
907 status->card_type = buf[5];
908 status->total_lun = buf[6];
909 status->fw_ver = ((u16) buf[7] << 8) | buf[8];
910 status->phy_exist = buf[9];
911 status->multi_flag = buf[10];
912 status->multi_card = buf[11];
913 status->log_exist = buf[12];
914 if (chip->status_len == 16) {
915 status->detailed_type.detailed_type1 = buf[13];
916 status->function[0] = buf[14];
917 status->function[1] = buf[15];
918 }
919
920 /* back up the proto_handler in us->extra */
921 chip = (struct rts51x_chip *)(us->extra);
922 chip->proto_handler_backup = us->proto_handler;
923 /* Set the autosuspend_delay to 0 */
924 pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
925 /* override us->proto_handler setted in get_protocol() */
926 us->proto_handler = rts51x_invoke_transport;
927
928 chip->timer_expires = 0;
929 setup_timer(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn,
930 (unsigned long)chip);
931 fw5895_init(us);
932
933 /* enable autosuspend function of the usb device */
934 usb_enable_autosuspend(us->pusb_dev);
935
936 return 0;
937}
938#endif
939
940static void realtek_cr_destructor(void *extra)
941{
942 struct rts51x_chip *chip = extra;
943
944 if (!chip)
945 return;
946
947#ifdef CONFIG_REALTEK_AUTOPM
948 if (ss_en) {
949 del_timer(&chip->rts51x_suspend_timer);
950 chip->timer_expires = 0;
951 }
952#endif
953 kfree(chip->status);
954}
955
956#ifdef CONFIG_PM
957static int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
958{
959 struct us_data *us = usb_get_intfdata(iface);
960
961 /* wait until no command is running */
962 mutex_lock(&us->dev_mutex);
963
964 config_autodelink_before_power_down(us);
965
966 mutex_unlock(&us->dev_mutex);
967
968 return 0;
969}
970
971static int realtek_cr_resume(struct usb_interface *iface)
972{
973 struct us_data *us = usb_get_intfdata(iface);
974
975 fw5895_init(us);
976 config_autodelink_after_power_on(us);
977
978 return 0;
979}
980#else
981#define realtek_cr_suspend NULL
982#define realtek_cr_resume NULL
983#endif
984
985static int init_realtek_cr(struct us_data *us)
986{
987 struct rts51x_chip *chip;
988 int size, i, retval;
989
990 chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
991 if (!chip)
992 return -ENOMEM;
993
994 us->extra = chip;
995 us->extra_destructor = realtek_cr_destructor;
996 us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
997 chip->us = us;
998
999 usb_stor_dbg(us, "chip->max_lun = %d\n", chip->max_lun);
1000
1001 size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
1002 chip->status = kzalloc(size, GFP_KERNEL);
1003 if (!chip->status)
1004 goto INIT_FAIL;
1005
1006 for (i = 0; i <= (int)(chip->max_lun); i++) {
1007 retval = rts51x_check_status(us, (u8) i);
1008 if (retval < 0)
1009 goto INIT_FAIL;
1010 }
1011
1012 if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
1013 CHECK_FW_VER(chip, 0x5901))
1014 SET_AUTO_DELINK(chip);
1015 if (STATUS_LEN(chip) == 16) {
1016 if (SUPPORT_AUTO_DELINK(chip))
1017 SET_AUTO_DELINK(chip);
1018 }
1019#ifdef CONFIG_REALTEK_AUTOPM
1020 if (ss_en)
1021 realtek_cr_autosuspend_setup(us);
1022#endif
1023
1024 usb_stor_dbg(us, "chip->flag = 0x%x\n", chip->flag);
1025
1026 (void)config_autodelink_after_power_on(us);
1027
1028 return 0;
1029
1030INIT_FAIL:
1031 if (us->extra) {
1032 kfree(chip->status);
1033 kfree(us->extra);
1034 us->extra = NULL;
1035 }
1036
1037 return -EIO;
1038}
1039
1040static struct scsi_host_template realtek_cr_host_template;
1041
1042static int realtek_cr_probe(struct usb_interface *intf,
1043 const struct usb_device_id *id)
1044{
1045 struct us_data *us;
1046 int result;
1047
1048 dev_dbg(&intf->dev, "Probe Realtek Card Reader!\n");
1049
1050 result = usb_stor_probe1(&us, intf, id,
1051 (id - realtek_cr_ids) +
1052 realtek_cr_unusual_dev_list,
1053 &realtek_cr_host_template);
1054 if (result)
1055 return result;
1056
1057 result = usb_stor_probe2(us);
1058
1059 return result;
1060}
1061
1062static struct usb_driver realtek_cr_driver = {
1063 .name = DRV_NAME,
1064 .probe = realtek_cr_probe,
1065 .disconnect = usb_stor_disconnect,
1066 /* .suspend = usb_stor_suspend, */
1067 /* .resume = usb_stor_resume, */
1068 .reset_resume = usb_stor_reset_resume,
1069 .suspend = realtek_cr_suspend,
1070 .resume = realtek_cr_resume,
1071 .pre_reset = usb_stor_pre_reset,
1072 .post_reset = usb_stor_post_reset,
1073 .id_table = realtek_cr_ids,
1074 .soft_unbind = 1,
1075 .supports_autosuspend = 1,
1076 .no_dynamic_id = 1,
1077};
1078
1079module_usb_stor_driver(realtek_cr_driver, realtek_cr_host_template, DRV_NAME);
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Driver for Realtek RTS51xx USB card reader
4 *
5 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
6 *
7 * Author:
8 * wwang (wei_wang@realsil.com.cn)
9 * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
10 */
11
12#include <linux/module.h>
13#include <linux/blkdev.h>
14#include <linux/kthread.h>
15#include <linux/sched.h>
16#include <linux/kernel.h>
17
18#include <scsi/scsi.h>
19#include <scsi/scsi_cmnd.h>
20#include <scsi/scsi_device.h>
21#include <linux/cdrom.h>
22
23#include <linux/usb.h>
24#include <linux/slab.h>
25#include <linux/usb_usual.h>
26
27#include "usb.h"
28#include "transport.h"
29#include "protocol.h"
30#include "debug.h"
31#include "scsiglue.h"
32
33#define DRV_NAME "ums-realtek"
34
35MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
36MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
37MODULE_LICENSE("GPL");
38
39static int auto_delink_en = 1;
40module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
41MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
42
43#ifdef CONFIG_REALTEK_AUTOPM
44static int ss_en = 1;
45module_param(ss_en, int, S_IRUGO | S_IWUSR);
46MODULE_PARM_DESC(ss_en, "enable selective suspend");
47
48static int ss_delay = 50;
49module_param(ss_delay, int, S_IRUGO | S_IWUSR);
50MODULE_PARM_DESC(ss_delay,
51 "seconds to delay before entering selective suspend");
52
53enum RTS51X_STAT {
54 RTS51X_STAT_INIT,
55 RTS51X_STAT_IDLE,
56 RTS51X_STAT_RUN,
57 RTS51X_STAT_SS
58};
59
60#define POLLING_INTERVAL 50
61
62#define rts51x_set_stat(chip, stat) \
63 ((chip)->state = (enum RTS51X_STAT)(stat))
64#define rts51x_get_stat(chip) ((chip)->state)
65
66#define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun)))
67#define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun)))
68#define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun)))
69
70#endif
71
72struct rts51x_status {
73 u16 vid;
74 u16 pid;
75 u8 cur_lun;
76 u8 card_type;
77 u8 total_lun;
78 u16 fw_ver;
79 u8 phy_exist;
80 u8 multi_flag;
81 u8 multi_card;
82 u8 log_exist;
83 union {
84 u8 detailed_type1;
85 u8 detailed_type2;
86 } detailed_type;
87 u8 function[2];
88};
89
90struct rts51x_chip {
91 u16 vendor_id;
92 u16 product_id;
93 char max_lun;
94
95 struct rts51x_status *status;
96 int status_len;
97
98 u32 flag;
99 struct us_data *us;
100
101#ifdef CONFIG_REALTEK_AUTOPM
102 struct timer_list rts51x_suspend_timer;
103 unsigned long timer_expires;
104 int pwr_state;
105 u8 lun_ready;
106 enum RTS51X_STAT state;
107 int support_auto_delink;
108#endif
109 /* used to back up the protocol chosen in probe1 phase */
110 proto_cmnd proto_handler_backup;
111};
112
113/* flag definition */
114#define FLIDX_AUTO_DELINK 0x01
115
116#define SCSI_LUN(srb) ((srb)->device->lun)
117
118/* Bit Operation */
119#define SET_BIT(data, idx) ((data) |= 1 << (idx))
120#define CLR_BIT(data, idx) ((data) &= ~(1 << (idx)))
121#define CHK_BIT(data, idx) ((data) & (1 << (idx)))
122
123#define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK)
124#define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK)
125#define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK)
126
127#define RTS51X_GET_VID(chip) ((chip)->vendor_id)
128#define RTS51X_GET_PID(chip) ((chip)->product_id)
129
130#define VENDOR_ID(chip) ((chip)->status[0].vid)
131#define PRODUCT_ID(chip) ((chip)->status[0].pid)
132#define FW_VERSION(chip) ((chip)->status[0].fw_ver)
133#define STATUS_LEN(chip) ((chip)->status_len)
134
135#define STATUS_SUCCESS 0
136#define STATUS_FAIL 1
137
138/* Check card reader function */
139#define SUPPORT_DETAILED_TYPE1(chip) \
140 CHK_BIT((chip)->status[0].function[0], 1)
141#define SUPPORT_OT(chip) \
142 CHK_BIT((chip)->status[0].function[0], 2)
143#define SUPPORT_OC(chip) \
144 CHK_BIT((chip)->status[0].function[0], 3)
145#define SUPPORT_AUTO_DELINK(chip) \
146 CHK_BIT((chip)->status[0].function[0], 4)
147#define SUPPORT_SDIO(chip) \
148 CHK_BIT((chip)->status[0].function[1], 0)
149#define SUPPORT_DETAILED_TYPE2(chip) \
150 CHK_BIT((chip)->status[0].function[1], 1)
151
152#define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid))
153#define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver))
154#define CHECK_ID(chip, pid, fw_ver) \
155 (CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
156
157static int init_realtek_cr(struct us_data *us);
158
159/*
160 * The table of devices
161 */
162#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
163 vendorName, productName, useProtocol, useTransport, \
164 initFunction, flags) \
165{\
166 USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
167 .driver_info = (flags) \
168}
169
170static const struct usb_device_id realtek_cr_ids[] = {
171# include "unusual_realtek.h"
172 {} /* Terminating entry */
173};
174
175MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
176
177#undef UNUSUAL_DEV
178
179/*
180 * The flags table
181 */
182#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
183 vendor_name, product_name, use_protocol, use_transport, \
184 init_function, Flags) \
185{ \
186 .vendorName = vendor_name, \
187 .productName = product_name, \
188 .useProtocol = use_protocol, \
189 .useTransport = use_transport, \
190 .initFunction = init_function, \
191}
192
193static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
194# include "unusual_realtek.h"
195 {} /* Terminating entry */
196};
197
198#undef UNUSUAL_DEV
199
200static int rts51x_bulk_transport(struct us_data *us, u8 lun,
201 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
202 enum dma_data_direction dir, int *act_len)
203{
204 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
205 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
206 int result;
207 unsigned int residue;
208 unsigned int cswlen;
209 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
210
211 /* set up the command wrapper */
212 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
213 bcb->DataTransferLength = cpu_to_le32(buf_len);
214 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
215 bcb->Tag = ++us->tag;
216 bcb->Lun = lun;
217 bcb->Length = cmd_len;
218
219 /* copy the command payload */
220 memset(bcb->CDB, 0, sizeof(bcb->CDB));
221 memcpy(bcb->CDB, cmd, bcb->Length);
222
223 /* send it to out endpoint */
224 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
225 bcb, cbwlen, NULL);
226 if (result != USB_STOR_XFER_GOOD)
227 return USB_STOR_TRANSPORT_ERROR;
228
229 /* DATA STAGE */
230 /* send/receive data payload, if there is any */
231
232 if (buf && buf_len) {
233 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
234 us->recv_bulk_pipe : us->send_bulk_pipe;
235 result = usb_stor_bulk_transfer_buf(us, pipe,
236 buf, buf_len, NULL);
237 if (result == USB_STOR_XFER_ERROR)
238 return USB_STOR_TRANSPORT_ERROR;
239 }
240
241 /* get CSW for device status */
242 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
243 bcs, US_BULK_CS_WRAP_LEN, &cswlen);
244 if (result != USB_STOR_XFER_GOOD)
245 return USB_STOR_TRANSPORT_ERROR;
246
247 /* check bulk status */
248 if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
249 usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n",
250 le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
251 return USB_STOR_TRANSPORT_ERROR;
252 }
253
254 residue = bcs->Residue;
255 if (bcs->Tag != us->tag)
256 return USB_STOR_TRANSPORT_ERROR;
257
258 /*
259 * try to compute the actual residue, based on how much data
260 * was really transferred and what the device tells us
261 */
262 if (residue)
263 residue = residue < buf_len ? residue : buf_len;
264
265 if (act_len)
266 *act_len = buf_len - residue;
267
268 /* based on the status code, we report good or bad */
269 switch (bcs->Status) {
270 case US_BULK_STAT_OK:
271 /* command good -- note that data could be short */
272 return USB_STOR_TRANSPORT_GOOD;
273
274 case US_BULK_STAT_FAIL:
275 /* command failed */
276 return USB_STOR_TRANSPORT_FAILED;
277
278 case US_BULK_STAT_PHASE:
279 /*
280 * phase error -- note that a transport reset will be
281 * invoked by the invoke_transport() function
282 */
283 return USB_STOR_TRANSPORT_ERROR;
284 }
285
286 /* we should never get here, but if we do, we're in trouble */
287 return USB_STOR_TRANSPORT_ERROR;
288}
289
290static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
291 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
292 enum dma_data_direction dir, int *act_len)
293{
294 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
295 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
296 int result;
297 unsigned int cswlen;
298 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
299
300 /* set up the command wrapper */
301 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
302 bcb->DataTransferLength = cpu_to_le32(buf_len);
303 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
304 bcb->Tag = ++us->tag;
305 bcb->Lun = lun;
306 bcb->Length = cmd_len;
307
308 /* copy the command payload */
309 memset(bcb->CDB, 0, sizeof(bcb->CDB));
310 memcpy(bcb->CDB, cmd, bcb->Length);
311
312 /* send it to out endpoint */
313 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
314 bcb, cbwlen, NULL);
315 if (result != USB_STOR_XFER_GOOD)
316 return USB_STOR_TRANSPORT_ERROR;
317
318 /* DATA STAGE */
319 /* send/receive data payload, if there is any */
320
321 if (buf && buf_len) {
322 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
323 us->recv_bulk_pipe : us->send_bulk_pipe;
324 result = usb_stor_bulk_transfer_buf(us, pipe,
325 buf, buf_len, NULL);
326 if (result == USB_STOR_XFER_ERROR)
327 return USB_STOR_TRANSPORT_ERROR;
328 }
329
330 /* get CSW for device status */
331 result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs,
332 US_BULK_CS_WRAP_LEN, &cswlen, 250);
333 return result;
334}
335
336/* Determine what the maximum LUN supported is */
337static int rts51x_get_max_lun(struct us_data *us)
338{
339 int result;
340
341 /* issue the command */
342 us->iobuf[0] = 0;
343 result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
344 US_BULK_GET_MAX_LUN,
345 USB_DIR_IN | USB_TYPE_CLASS |
346 USB_RECIP_INTERFACE,
347 0, us->ifnum, us->iobuf, 1, 10 * HZ);
348
349 usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n",
350 result, us->iobuf[0]);
351
352 /* if we have a successful request, return the result */
353 if (result > 0)
354 return us->iobuf[0];
355
356 return 0;
357}
358
359static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
360{
361 int retval;
362 u8 cmnd[12] = { 0 };
363 u8 *buf;
364
365 buf = kmalloc(len, GFP_NOIO);
366 if (buf == NULL)
367 return USB_STOR_TRANSPORT_ERROR;
368
369 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
370
371 cmnd[0] = 0xF0;
372 cmnd[1] = 0x0D;
373 cmnd[2] = (u8) (addr >> 8);
374 cmnd[3] = (u8) addr;
375 cmnd[4] = (u8) (len >> 8);
376 cmnd[5] = (u8) len;
377
378 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
379 buf, len, DMA_FROM_DEVICE, NULL);
380 if (retval != USB_STOR_TRANSPORT_GOOD) {
381 kfree(buf);
382 return -EIO;
383 }
384
385 memcpy(data, buf, len);
386 kfree(buf);
387 return 0;
388}
389
390static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
391{
392 int retval;
393 u8 cmnd[12] = { 0 };
394 u8 *buf;
395
396 buf = kmemdup(data, len, GFP_NOIO);
397 if (buf == NULL)
398 return USB_STOR_TRANSPORT_ERROR;
399
400 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
401
402 cmnd[0] = 0xF0;
403 cmnd[1] = 0x0E;
404 cmnd[2] = (u8) (addr >> 8);
405 cmnd[3] = (u8) addr;
406 cmnd[4] = (u8) (len >> 8);
407 cmnd[5] = (u8) len;
408
409 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
410 buf, len, DMA_TO_DEVICE, NULL);
411 kfree(buf);
412 if (retval != USB_STOR_TRANSPORT_GOOD)
413 return -EIO;
414
415 return 0;
416}
417
418static int rts51x_read_status(struct us_data *us,
419 u8 lun, u8 *status, int len, int *actlen)
420{
421 int retval;
422 u8 cmnd[12] = { 0 };
423 u8 *buf;
424
425 buf = kmalloc(len, GFP_NOIO);
426 if (buf == NULL)
427 return USB_STOR_TRANSPORT_ERROR;
428
429 usb_stor_dbg(us, "lun = %d\n", lun);
430
431 cmnd[0] = 0xF0;
432 cmnd[1] = 0x09;
433
434 retval = rts51x_bulk_transport(us, lun, cmnd, 12,
435 buf, len, DMA_FROM_DEVICE, actlen);
436 if (retval != USB_STOR_TRANSPORT_GOOD) {
437 kfree(buf);
438 return -EIO;
439 }
440
441 memcpy(status, buf, len);
442 kfree(buf);
443 return 0;
444}
445
446static int rts51x_check_status(struct us_data *us, u8 lun)
447{
448 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
449 int retval;
450 u8 buf[16];
451
452 retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
453 if (retval != STATUS_SUCCESS)
454 return -EIO;
455
456 usb_stor_dbg(us, "chip->status_len = %d\n", chip->status_len);
457
458 chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
459 chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
460 chip->status[lun].cur_lun = buf[4];
461 chip->status[lun].card_type = buf[5];
462 chip->status[lun].total_lun = buf[6];
463 chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
464 chip->status[lun].phy_exist = buf[9];
465 chip->status[lun].multi_flag = buf[10];
466 chip->status[lun].multi_card = buf[11];
467 chip->status[lun].log_exist = buf[12];
468 if (chip->status_len == 16) {
469 chip->status[lun].detailed_type.detailed_type1 = buf[13];
470 chip->status[lun].function[0] = buf[14];
471 chip->status[lun].function[1] = buf[15];
472 }
473
474 return 0;
475}
476
477static int enable_oscillator(struct us_data *us)
478{
479 int retval;
480 u8 value;
481
482 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
483 if (retval < 0)
484 return -EIO;
485
486 value |= 0x04;
487 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
488 if (retval < 0)
489 return -EIO;
490
491 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
492 if (retval < 0)
493 return -EIO;
494
495 if (!(value & 0x04))
496 return -EIO;
497
498 return 0;
499}
500
501static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
502{
503 int retval;
504 u8 cmnd[12] = {0};
505 u8 *buf;
506
507 usb_stor_dbg(us, "addr = 0xfe47, len = %d\n", len);
508
509 buf = kmemdup(data, len, GFP_NOIO);
510 if (!buf)
511 return USB_STOR_TRANSPORT_ERROR;
512
513 cmnd[0] = 0xF0;
514 cmnd[1] = 0x0E;
515 cmnd[2] = 0xfe;
516 cmnd[3] = 0x47;
517 cmnd[4] = (u8)(len >> 8);
518 cmnd[5] = (u8)len;
519
520 retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL);
521 kfree(buf);
522 if (retval != USB_STOR_TRANSPORT_GOOD) {
523 return -EIO;
524 }
525
526 return 0;
527}
528
529static int do_config_autodelink(struct us_data *us, int enable, int force)
530{
531 int retval;
532 u8 value;
533
534 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
535 if (retval < 0)
536 return -EIO;
537
538 if (enable) {
539 if (force)
540 value |= 0x03;
541 else
542 value |= 0x01;
543 } else {
544 value &= ~0x03;
545 }
546
547 usb_stor_dbg(us, "set 0xfe47 to 0x%x\n", value);
548
549 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
550 retval = __do_config_autodelink(us, &value, 1);
551 if (retval < 0)
552 return -EIO;
553
554 return 0;
555}
556
557static int config_autodelink_after_power_on(struct us_data *us)
558{
559 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
560 int retval;
561 u8 value;
562
563 if (!CHK_AUTO_DELINK(chip))
564 return 0;
565
566 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
567 if (retval < 0)
568 return -EIO;
569
570 if (auto_delink_en) {
571 CLR_BIT(value, 0);
572 CLR_BIT(value, 1);
573 SET_BIT(value, 2);
574
575 if (CHECK_ID(chip, 0x0138, 0x3882))
576 CLR_BIT(value, 2);
577
578 SET_BIT(value, 7);
579
580 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
581 retval = __do_config_autodelink(us, &value, 1);
582 if (retval < 0)
583 return -EIO;
584
585 retval = enable_oscillator(us);
586 if (retval == 0)
587 (void)do_config_autodelink(us, 1, 0);
588 } else {
589 /* Autodelink controlled by firmware */
590
591 SET_BIT(value, 2);
592
593 if (CHECK_ID(chip, 0x0138, 0x3882))
594 CLR_BIT(value, 2);
595
596 if (CHECK_ID(chip, 0x0159, 0x5889) ||
597 CHECK_ID(chip, 0x0138, 0x3880)) {
598 CLR_BIT(value, 0);
599 CLR_BIT(value, 7);
600 }
601
602 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
603 retval = __do_config_autodelink(us, &value, 1);
604 if (retval < 0)
605 return -EIO;
606
607 if (CHECK_ID(chip, 0x0159, 0x5888)) {
608 value = 0xFF;
609 retval = rts51x_write_mem(us, 0xFE79, &value, 1);
610 if (retval < 0)
611 return -EIO;
612
613 value = 0x01;
614 retval = rts51x_write_mem(us, 0x48, &value, 1);
615 if (retval < 0)
616 return -EIO;
617 }
618 }
619
620 return 0;
621}
622
623#ifdef CONFIG_PM
624static int config_autodelink_before_power_down(struct us_data *us)
625{
626 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
627 int retval;
628 u8 value;
629
630 if (!CHK_AUTO_DELINK(chip))
631 return 0;
632
633 if (auto_delink_en) {
634 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
635 if (retval < 0)
636 return -EIO;
637
638 SET_BIT(value, 2);
639 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
640 if (retval < 0)
641 return -EIO;
642
643 if (CHECK_ID(chip, 0x0159, 0x5888)) {
644 value = 0x01;
645 retval = rts51x_write_mem(us, 0x48, &value, 1);
646 if (retval < 0)
647 return -EIO;
648 }
649
650 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
651 if (retval < 0)
652 return -EIO;
653
654 SET_BIT(value, 0);
655 if (CHECK_ID(chip, 0x0138, 0x3882))
656 SET_BIT(value, 2);
657 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
658 if (retval < 0)
659 return -EIO;
660 } else {
661 if (CHECK_ID(chip, 0x0159, 0x5889) ||
662 CHECK_ID(chip, 0x0138, 0x3880) ||
663 CHECK_ID(chip, 0x0138, 0x3882)) {
664 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
665 if (retval < 0)
666 return -EIO;
667
668 if (CHECK_ID(chip, 0x0159, 0x5889) ||
669 CHECK_ID(chip, 0x0138, 0x3880)) {
670 SET_BIT(value, 0);
671 SET_BIT(value, 7);
672 }
673
674 if (CHECK_ID(chip, 0x0138, 0x3882))
675 SET_BIT(value, 2);
676
677 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
678 retval = __do_config_autodelink(us, &value, 1);
679 if (retval < 0)
680 return -EIO;
681 }
682
683 if (CHECK_ID(chip, 0x0159, 0x5888)) {
684 value = 0x01;
685 retval = rts51x_write_mem(us, 0x48, &value, 1);
686 if (retval < 0)
687 return -EIO;
688 }
689 }
690
691 return 0;
692}
693
694static void fw5895_init(struct us_data *us)
695{
696 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
697 int retval;
698 u8 val;
699
700 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
701 usb_stor_dbg(us, "Not the specified device, return immediately!\n");
702 } else {
703 retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
704 if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
705 val = 0x1F;
706 retval = rts51x_write_mem(us, 0xFD70, &val, 1);
707 if (retval != STATUS_SUCCESS)
708 usb_stor_dbg(us, "Write memory fail\n");
709 } else {
710 usb_stor_dbg(us, "Read memory fail, OR (val & 0x1F) != 0\n");
711 }
712 }
713}
714#endif
715
716#ifdef CONFIG_REALTEK_AUTOPM
717static void fw5895_set_mmc_wp(struct us_data *us)
718{
719 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
720 int retval;
721 u8 buf[13];
722
723 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
724 usb_stor_dbg(us, "Not the specified device, return immediately!\n");
725 } else {
726 retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
727 if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
728 /* SD Exist and SD WP */
729 retval = rts51x_read_mem(us, 0xD04E, buf, 1);
730 if (retval == STATUS_SUCCESS) {
731 buf[0] |= 0x04;
732 retval = rts51x_write_mem(us, 0xFD70, buf, 1);
733 if (retval != STATUS_SUCCESS)
734 usb_stor_dbg(us, "Write memory fail\n");
735 } else {
736 usb_stor_dbg(us, "Read memory fail\n");
737 }
738 } else {
739 usb_stor_dbg(us, "Read memory fail, OR (buf[0]&0x24)!=0x24\n");
740 }
741 }
742}
743
744static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
745{
746 struct us_data *us = chip->us;
747
748 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
749
750 chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
751 mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
752}
753
754static void rts51x_suspend_timer_fn(struct timer_list *t)
755{
756 struct rts51x_chip *chip = from_timer(chip, t, rts51x_suspend_timer);
757 struct us_data *us = chip->us;
758
759 switch (rts51x_get_stat(chip)) {
760 case RTS51X_STAT_INIT:
761 case RTS51X_STAT_RUN:
762 rts51x_modi_suspend_timer(chip);
763 break;
764 case RTS51X_STAT_IDLE:
765 case RTS51X_STAT_SS:
766 usb_stor_dbg(us, "RTS51X_STAT_SS, intf->pm_usage_cnt:%d, power.usage:%d\n",
767 atomic_read(&us->pusb_intf->pm_usage_cnt),
768 atomic_read(&us->pusb_intf->dev.power.usage_count));
769
770 if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
771 usb_stor_dbg(us, "Ready to enter SS state\n");
772 rts51x_set_stat(chip, RTS51X_STAT_SS);
773 /* ignore mass storage interface's children */
774 pm_suspend_ignore_children(&us->pusb_intf->dev, true);
775 usb_autopm_put_interface_async(us->pusb_intf);
776 usb_stor_dbg(us, "RTS51X_STAT_SS 01, intf->pm_usage_cnt:%d, power.usage:%d\n",
777 atomic_read(&us->pusb_intf->pm_usage_cnt),
778 atomic_read(&us->pusb_intf->dev.power.usage_count));
779 }
780 break;
781 default:
782 usb_stor_dbg(us, "Unknown state !!!\n");
783 break;
784 }
785}
786
787static inline int working_scsi(struct scsi_cmnd *srb)
788{
789 if ((srb->cmnd[0] == TEST_UNIT_READY) ||
790 (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
791 return 0;
792 }
793
794 return 1;
795}
796
797static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
798{
799 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
800 static int card_first_show = 1;
801 static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
802 10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
803 };
804 static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
805 10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
806 };
807 int ret;
808
809 if (working_scsi(srb)) {
810 usb_stor_dbg(us, "working scsi, intf->pm_usage_cnt:%d, power.usage:%d\n",
811 atomic_read(&us->pusb_intf->pm_usage_cnt),
812 atomic_read(&us->pusb_intf->dev.power.usage_count));
813
814 if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
815 ret = usb_autopm_get_interface(us->pusb_intf);
816 usb_stor_dbg(us, "working scsi, ret=%d\n", ret);
817 }
818 if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
819 rts51x_set_stat(chip, RTS51X_STAT_RUN);
820 chip->proto_handler_backup(srb, us);
821 } else {
822 if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
823 usb_stor_dbg(us, "NOT working scsi\n");
824 if ((srb->cmnd[0] == TEST_UNIT_READY) &&
825 (chip->pwr_state == US_SUSPEND)) {
826 if (TST_LUN_READY(chip, srb->device->lun)) {
827 srb->result = SAM_STAT_GOOD;
828 } else {
829 srb->result = SAM_STAT_CHECK_CONDITION;
830 memcpy(srb->sense_buffer,
831 media_not_present,
832 US_SENSE_SIZE);
833 }
834 usb_stor_dbg(us, "TEST_UNIT_READY\n");
835 goto out;
836 }
837 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
838 int prevent = srb->cmnd[4] & 0x1;
839 if (prevent) {
840 srb->result = SAM_STAT_CHECK_CONDITION;
841 memcpy(srb->sense_buffer,
842 invalid_cmd_field,
843 US_SENSE_SIZE);
844 } else {
845 srb->result = SAM_STAT_GOOD;
846 }
847 usb_stor_dbg(us, "ALLOW_MEDIUM_REMOVAL\n");
848 goto out;
849 }
850 } else {
851 usb_stor_dbg(us, "NOT working scsi, not SS\n");
852 chip->proto_handler_backup(srb, us);
853 /* Check whether card is plugged in */
854 if (srb->cmnd[0] == TEST_UNIT_READY) {
855 if (srb->result == SAM_STAT_GOOD) {
856 SET_LUN_READY(chip, srb->device->lun);
857 if (card_first_show) {
858 card_first_show = 0;
859 fw5895_set_mmc_wp(us);
860 }
861 } else {
862 CLR_LUN_READY(chip, srb->device->lun);
863 card_first_show = 1;
864 }
865 }
866 if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
867 rts51x_set_stat(chip, RTS51X_STAT_IDLE);
868 }
869 }
870out:
871 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
872 if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
873 rts51x_modi_suspend_timer(chip);
874}
875
876static int realtek_cr_autosuspend_setup(struct us_data *us)
877{
878 struct rts51x_chip *chip;
879 struct rts51x_status *status = NULL;
880 u8 buf[16];
881 int retval;
882
883 chip = (struct rts51x_chip *)us->extra;
884 chip->support_auto_delink = 0;
885 chip->pwr_state = US_RESUME;
886 chip->lun_ready = 0;
887 rts51x_set_stat(chip, RTS51X_STAT_INIT);
888
889 retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
890 if (retval != STATUS_SUCCESS) {
891 usb_stor_dbg(us, "Read status fail\n");
892 return -EIO;
893 }
894 status = chip->status;
895 status->vid = ((u16) buf[0] << 8) | buf[1];
896 status->pid = ((u16) buf[2] << 8) | buf[3];
897 status->cur_lun = buf[4];
898 status->card_type = buf[5];
899 status->total_lun = buf[6];
900 status->fw_ver = ((u16) buf[7] << 8) | buf[8];
901 status->phy_exist = buf[9];
902 status->multi_flag = buf[10];
903 status->multi_card = buf[11];
904 status->log_exist = buf[12];
905 if (chip->status_len == 16) {
906 status->detailed_type.detailed_type1 = buf[13];
907 status->function[0] = buf[14];
908 status->function[1] = buf[15];
909 }
910
911 /* back up the proto_handler in us->extra */
912 chip = (struct rts51x_chip *)(us->extra);
913 chip->proto_handler_backup = us->proto_handler;
914 /* Set the autosuspend_delay to 0 */
915 pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
916 /* override us->proto_handler setted in get_protocol() */
917 us->proto_handler = rts51x_invoke_transport;
918
919 chip->timer_expires = 0;
920 timer_setup(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn, 0);
921 fw5895_init(us);
922
923 /* enable autosuspend function of the usb device */
924 usb_enable_autosuspend(us->pusb_dev);
925
926 return 0;
927}
928#endif
929
930static void realtek_cr_destructor(void *extra)
931{
932 struct rts51x_chip *chip = extra;
933
934 if (!chip)
935 return;
936
937#ifdef CONFIG_REALTEK_AUTOPM
938 if (ss_en) {
939 del_timer(&chip->rts51x_suspend_timer);
940 chip->timer_expires = 0;
941 }
942#endif
943 kfree(chip->status);
944}
945
946#ifdef CONFIG_PM
947static int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
948{
949 struct us_data *us = usb_get_intfdata(iface);
950
951 /* wait until no command is running */
952 mutex_lock(&us->dev_mutex);
953
954 config_autodelink_before_power_down(us);
955
956 mutex_unlock(&us->dev_mutex);
957
958 return 0;
959}
960
961static int realtek_cr_resume(struct usb_interface *iface)
962{
963 struct us_data *us = usb_get_intfdata(iface);
964
965 fw5895_init(us);
966 config_autodelink_after_power_on(us);
967
968 return 0;
969}
970#else
971#define realtek_cr_suspend NULL
972#define realtek_cr_resume NULL
973#endif
974
975static int init_realtek_cr(struct us_data *us)
976{
977 struct rts51x_chip *chip;
978 int size, i, retval;
979
980 chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
981 if (!chip)
982 return -ENOMEM;
983
984 us->extra = chip;
985 us->extra_destructor = realtek_cr_destructor;
986 us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
987 chip->us = us;
988
989 usb_stor_dbg(us, "chip->max_lun = %d\n", chip->max_lun);
990
991 size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
992 chip->status = kzalloc(size, GFP_KERNEL);
993 if (!chip->status)
994 goto INIT_FAIL;
995
996 for (i = 0; i <= (int)(chip->max_lun); i++) {
997 retval = rts51x_check_status(us, (u8) i);
998 if (retval < 0)
999 goto INIT_FAIL;
1000 }
1001
1002 if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
1003 CHECK_FW_VER(chip, 0x5901))
1004 SET_AUTO_DELINK(chip);
1005 if (STATUS_LEN(chip) == 16) {
1006 if (SUPPORT_AUTO_DELINK(chip))
1007 SET_AUTO_DELINK(chip);
1008 }
1009#ifdef CONFIG_REALTEK_AUTOPM
1010 if (ss_en)
1011 realtek_cr_autosuspend_setup(us);
1012#endif
1013
1014 usb_stor_dbg(us, "chip->flag = 0x%x\n", chip->flag);
1015
1016 (void)config_autodelink_after_power_on(us);
1017
1018 return 0;
1019
1020INIT_FAIL:
1021 if (us->extra) {
1022 kfree(chip->status);
1023 kfree(us->extra);
1024 us->extra = NULL;
1025 }
1026
1027 return -EIO;
1028}
1029
1030static struct scsi_host_template realtek_cr_host_template;
1031
1032static int realtek_cr_probe(struct usb_interface *intf,
1033 const struct usb_device_id *id)
1034{
1035 struct us_data *us;
1036 int result;
1037
1038 dev_dbg(&intf->dev, "Probe Realtek Card Reader!\n");
1039
1040 result = usb_stor_probe1(&us, intf, id,
1041 (id - realtek_cr_ids) +
1042 realtek_cr_unusual_dev_list,
1043 &realtek_cr_host_template);
1044 if (result)
1045 return result;
1046
1047 result = usb_stor_probe2(us);
1048
1049 return result;
1050}
1051
1052static struct usb_driver realtek_cr_driver = {
1053 .name = DRV_NAME,
1054 .probe = realtek_cr_probe,
1055 .disconnect = usb_stor_disconnect,
1056 /* .suspend = usb_stor_suspend, */
1057 /* .resume = usb_stor_resume, */
1058 .reset_resume = usb_stor_reset_resume,
1059 .suspend = realtek_cr_suspend,
1060 .resume = realtek_cr_resume,
1061 .pre_reset = usb_stor_pre_reset,
1062 .post_reset = usb_stor_post_reset,
1063 .id_table = realtek_cr_ids,
1064 .soft_unbind = 1,
1065 .supports_autosuspend = 1,
1066 .no_dynamic_id = 1,
1067};
1068
1069module_usb_stor_driver(realtek_cr_driver, realtek_cr_host_template, DRV_NAME);