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usb: storage: fix build warnings !CONFIG_PM
[mirror_ubuntu-artful-kernel.git] / drivers / usb / storage / realtek_cr.c
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50a6cb93 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>
50a6cb93 27#include <linux/kernel.h>
50a6cb93 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
43MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
44MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
45MODULE_LICENSE("GPL");
46MODULE_VERSION("1.03");
47
48static int auto_delink_en = 1;
49module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
50MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
51
e931830b 52#ifdef CONFIG_REALTEK_AUTOPM
53static int ss_en = 1;
54module_param(ss_en, int, S_IRUGO | S_IWUSR);
55MODULE_PARM_DESC(ss_en, "enable selective suspend");
56
57static int ss_delay = 50;
58module_param(ss_delay, int, S_IRUGO | S_IWUSR);
59MODULE_PARM_DESC(ss_delay,
60 "seconds to delay before entering selective suspend");
61
62enum RTS51X_STAT {
63 RTS51X_STAT_INIT,
64 RTS51X_STAT_IDLE,
65 RTS51X_STAT_RUN,
66 RTS51X_STAT_SS
67};
68
69#define POLLING_INTERVAL 50
70
71#define rts51x_set_stat(chip, stat) \
72 ((chip)->state = (enum RTS51X_STAT)(stat))
73#define rts51x_get_stat(chip) ((chip)->state)
74
75#define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun)))
76#define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun)))
77#define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun)))
78
79#endif
80
50a6cb93 81struct rts51x_status {
82 u16 vid;
83 u16 pid;
84 u8 cur_lun;
85 u8 card_type;
86 u8 total_lun;
87 u16 fw_ver;
88 u8 phy_exist;
89 u8 multi_flag;
90 u8 multi_card;
91 u8 log_exist;
92 union {
93 u8 detailed_type1;
94 u8 detailed_type2;
95 } detailed_type;
96 u8 function[2];
97};
98
99struct rts51x_chip {
151d9fad 100 u16 vendor_id;
101 u16 product_id;
102 char max_lun;
50a6cb93 103
151d9fad 104 struct rts51x_status *status;
105 int status_len;
50a6cb93 106
e931830b 107 u32 flag;
e931830b 108 struct us_data *us;
1c9e55cd
WW		 109
110#ifdef CONFIG_REALTEK_AUTOPM
e931830b 111 struct timer_list rts51x_suspend_timer;
112 unsigned long timer_expires;
113 int pwr_state;
114 u8 lun_ready;
115 enum RTS51X_STAT state;
116 int support_auto_delink;
117#endif
a6cd244b 118 /* used to back up the protocol chosen in probe1 phase */
e931830b 119 proto_cmnd proto_handler_backup;
50a6cb93 120};
121
122/* flag definition */
123#define FLIDX_AUTO_DELINK 0x01
124
125#define SCSI_LUN(srb) ((srb)->device->lun)
126
127/* Bit Operation */
128#define SET_BIT(data, idx) ((data) |= 1 << (idx))
129#define CLR_BIT(data, idx) ((data) &= ~(1 << (idx)))
130#define CHK_BIT(data, idx) ((data) & (1 << (idx)))
131
132#define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK)
133#define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK)
134#define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK)
135
136#define RTS51X_GET_VID(chip) ((chip)->vendor_id)
137#define RTS51X_GET_PID(chip) ((chip)->product_id)
138
e931830b 139#define VENDOR_ID(chip) ((chip)->status[0].vid)
140#define PRODUCT_ID(chip) ((chip)->status[0].pid)
50a6cb93 141#define FW_VERSION(chip) ((chip)->status[0].fw_ver)
142#define STATUS_LEN(chip) ((chip)->status_len)
143
e931830b 144#define STATUS_SUCCESS 0
145#define STATUS_FAIL 1
146
50a6cb93 147/* Check card reader function */
148#define SUPPORT_DETAILED_TYPE1(chip) \
149 CHK_BIT((chip)->status[0].function[0], 1)
150#define SUPPORT_OT(chip) \
151 CHK_BIT((chip)->status[0].function[0], 2)
152#define SUPPORT_OC(chip) \
153 CHK_BIT((chip)->status[0].function[0], 3)
154#define SUPPORT_AUTO_DELINK(chip) \
155 CHK_BIT((chip)->status[0].function[0], 4)
156#define SUPPORT_SDIO(chip) \
157 CHK_BIT((chip)->status[0].function[1], 0)
158#define SUPPORT_DETAILED_TYPE2(chip) \
159 CHK_BIT((chip)->status[0].function[1], 1)
160
161#define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid))
162#define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver))
163#define CHECK_ID(chip, pid, fw_ver) \
164 (CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
165
50a6cb93 166static int init_realtek_cr(struct us_data *us);
167
168/*
169 * The table of devices
170 */
171#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
172 vendorName, productName, useProtocol, useTransport, \
173 initFunction, flags) \
174{\
175 USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
f61870ee 176 .driver_info = (flags) \
50a6cb93 177}
178
8a9e658a 179static const struct usb_device_id realtek_cr_ids[] = {
50a6cb93 180# include "unusual_realtek.h"
151d9fad 181 {} /* Terminating entry */
50a6cb93 182};
151d9fad 183
50a6cb93 184MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
185
186#undef UNUSUAL_DEV
187
188/*
189 * The flags table
190 */
191#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
192 vendor_name, product_name, use_protocol, use_transport, \
193 init_function, Flags) \
194{ \
195 .vendorName = vendor_name, \
196 .productName = product_name, \
197 .useProtocol = use_protocol, \
198 .useTransport = use_transport, \
199 .initFunction = init_function, \
200}
201
202static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
203# include "unusual_realtek.h"
151d9fad 204 {} /* Terminating entry */
50a6cb93 205};
206
207#undef UNUSUAL_DEV
208
209static int rts51x_bulk_transport(struct us_data *us, u8 lun,
210 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
211 enum dma_data_direction dir, int *act_len)
212{
151d9fad 213 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
214 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
50a6cb93 215 int result;
216 unsigned int residue;
217 unsigned int cswlen;
218 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
219
220 /* set up the command wrapper */
221 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
222 bcb->DataTransferLength = cpu_to_le32(buf_len);
b8db6d64 223 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
50a6cb93 224 bcb->Tag = ++us->tag;
225 bcb->Lun = lun;
226 bcb->Length = cmd_len;
227
228 /* copy the command payload */
229 memset(bcb->CDB, 0, sizeof(bcb->CDB));
230 memcpy(bcb->CDB, cmd, bcb->Length);
231
232 /* send it to out endpoint */
233 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
151d9fad 234 bcb, cbwlen, NULL);
50a6cb93 235 if (result != USB_STOR_XFER_GOOD)
236 return USB_STOR_TRANSPORT_ERROR;
237
238 /* DATA STAGE */
239 /* send/receive data payload, if there is any */
240
241 if (buf && buf_len) {
242 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
151d9fad 243 us->recv_bulk_pipe : us->send_bulk_pipe;
50a6cb93 244 result = usb_stor_bulk_transfer_buf(us, pipe,
151d9fad 245 buf, buf_len, NULL);
50a6cb93 246 if (result == USB_STOR_XFER_ERROR)
247 return USB_STOR_TRANSPORT_ERROR;
248 }
249
250 /* get CSW for device status */
251 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
151d9fad 252 bcs, US_BULK_CS_WRAP_LEN, &cswlen);
50a6cb93 253 if (result != USB_STOR_XFER_GOOD)
254 return USB_STOR_TRANSPORT_ERROR;
255
256 /* check bulk status */
257 if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
191648d0
JP		 258 usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n",
259 le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
50a6cb93 260 return USB_STOR_TRANSPORT_ERROR;
261 }
262
263 residue = bcs->Residue;
264 if (bcs->Tag != us->tag)
265 return USB_STOR_TRANSPORT_ERROR;
266
267 /* try to compute the actual residue, based on how much data
268 * was really transferred and what the device tells us */
269 if (residue)
270 residue = residue < buf_len ? residue : buf_len;
271
272 if (act_len)
273 *act_len = buf_len - residue;
274
275 /* based on the status code, we report good or bad */
276 switch (bcs->Status) {
277 case US_BULK_STAT_OK:
278 /* command good -- note that data could be short */
279 return USB_STOR_TRANSPORT_GOOD;
280
281 case US_BULK_STAT_FAIL:
282 /* command failed */
283 return USB_STOR_TRANSPORT_FAILED;
284
285 case US_BULK_STAT_PHASE:
286 /* phase error -- note that a transport reset will be
151d9fad 287 * invoked by the invoke_transport() function
288 */
50a6cb93 289 return USB_STOR_TRANSPORT_ERROR;
290 }
291
292 /* we should never get here, but if we do, we're in trouble */
293 return USB_STOR_TRANSPORT_ERROR;
294}
295
45e1892e 296static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
297 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
298 enum dma_data_direction dir, int *act_len)
299{
300 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
301 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
302 int result;
303 unsigned int cswlen;
304 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
305
306 /* set up the command wrapper */
307 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
308 bcb->DataTransferLength = cpu_to_le32(buf_len);
b8db6d64 309 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
45e1892e 310 bcb->Tag = ++us->tag;
311 bcb->Lun = lun;
312 bcb->Length = cmd_len;
313
314 /* copy the command payload */
315 memset(bcb->CDB, 0, sizeof(bcb->CDB));
316 memcpy(bcb->CDB, cmd, bcb->Length);
317
318 /* send it to out endpoint */
319 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
320 bcb, cbwlen, NULL);
321 if (result != USB_STOR_XFER_GOOD)
322 return USB_STOR_TRANSPORT_ERROR;
323
324 /* DATA STAGE */
325 /* send/receive data payload, if there is any */
326
327 if (buf && buf_len) {
328 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
329 us->recv_bulk_pipe : us->send_bulk_pipe;
330 result = usb_stor_bulk_transfer_buf(us, pipe,
331 buf, buf_len, NULL);
332 if (result == USB_STOR_XFER_ERROR)
333 return USB_STOR_TRANSPORT_ERROR;
334 }
335
336 /* get CSW for device status */
337 result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs,
338 US_BULK_CS_WRAP_LEN, &cswlen, 250);
339 return result;
340}
341
50a6cb93 342/* Determine what the maximum LUN supported is */
343static int rts51x_get_max_lun(struct us_data *us)
344{
345 int result;
346
347 /* issue the command */
348 us->iobuf[0] = 0;
349 result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
151d9fad 350 US_BULK_GET_MAX_LUN,
351 USB_DIR_IN | USB_TYPE_CLASS |
352 USB_RECIP_INTERFACE,
353 0, us->ifnum, us->iobuf, 1, 10 * HZ);
50a6cb93 354
191648d0
JP		 355 usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n",
356 result, us->iobuf[0]);
50a6cb93 357
358 /* if we have a successful request, return the result */
359 if (result > 0)
360 return us->iobuf[0];
361
362 return 0;
363}
364
365static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
366{
367 int retval;
151d9fad 368 u8 cmnd[12] = { 0 };
065e6096
AC		 369 u8 *buf;
370
371 buf = kmalloc(len, GFP_NOIO);
372 if (buf == NULL)
373 return USB_STOR_TRANSPORT_ERROR;
50a6cb93 374
191648d0 375 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
50a6cb93 376
377 cmnd[0] = 0xF0;
378 cmnd[1] = 0x0D;
151d9fad 379 cmnd[2] = (u8) (addr >> 8);
380 cmnd[3] = (u8) addr;
381 cmnd[4] = (u8) (len >> 8);
382 cmnd[5] = (u8) len;
50a6cb93 383
384 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
065e6096
AC		 385 buf, len, DMA_FROM_DEVICE, NULL);
386 if (retval != USB_STOR_TRANSPORT_GOOD) {
387 kfree(buf);
50a6cb93 388 return -EIO;
065e6096 389 }
50a6cb93 390
065e6096
AC		 391 memcpy(data, buf, len);
392 kfree(buf);
50a6cb93 393 return 0;
394}
395
396static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
397{
398 int retval;
151d9fad 399 u8 cmnd[12] = { 0 };
065e6096
AC		 400 u8 *buf;
401
eb545522 402 buf = kmemdup(data, len, GFP_NOIO);
065e6096
AC		 403 if (buf == NULL)
404 return USB_STOR_TRANSPORT_ERROR;
50a6cb93 405
191648d0 406 usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
50a6cb93 407
408 cmnd[0] = 0xF0;
409 cmnd[1] = 0x0E;
151d9fad 410 cmnd[2] = (u8) (addr >> 8);
411 cmnd[3] = (u8) addr;
412 cmnd[4] = (u8) (len >> 8);
413 cmnd[5] = (u8) len;
50a6cb93 414
415 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
065e6096
AC		 416 buf, len, DMA_TO_DEVICE, NULL);
417 kfree(buf);
50a6cb93 418 if (retval != USB_STOR_TRANSPORT_GOOD)
419 return -EIO;
420
421 return 0;
422}
423
424static int rts51x_read_status(struct us_data *us,
425 u8 lun, u8 *status, int len, int *actlen)
426{
427 int retval;
151d9fad 428 u8 cmnd[12] = { 0 };
065e6096
AC		 429 u8 *buf;
430
431 buf = kmalloc(len, GFP_NOIO);
432 if (buf == NULL)
433 return USB_STOR_TRANSPORT_ERROR;
50a6cb93 434
191648d0 435 usb_stor_dbg(us, "lun = %d\n", lun);
50a6cb93 436
437 cmnd[0] = 0xF0;
438 cmnd[1] = 0x09;
439
440 retval = rts51x_bulk_transport(us, lun, cmnd, 12,
065e6096
AC		 441 buf, len, DMA_FROM_DEVICE, actlen);
442 if (retval != USB_STOR_TRANSPORT_GOOD) {
443 kfree(buf);
50a6cb93 444 return -EIO;
065e6096 445 }
50a6cb93 446
065e6096
AC		 447 memcpy(status, buf, len);
448 kfree(buf);
50a6cb93 449 return 0;
450}
451
452static int rts51x_check_status(struct us_data *us, u8 lun)
453{
454 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
455 int retval;
456 u8 buf[16];
457
458 retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
806df3ac 459 if (retval != STATUS_SUCCESS)
50a6cb93 460 return -EIO;
461
191648d0 462 usb_stor_dbg(us, "chip->status_len = %d\n", chip->status_len);
50a6cb93 463
151d9fad 464 chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
465 chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
50a6cb93 466 chip->status[lun].cur_lun = buf[4];
467 chip->status[lun].card_type = buf[5];
468 chip->status[lun].total_lun = buf[6];
151d9fad 469 chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
50a6cb93 470 chip->status[lun].phy_exist = buf[9];
471 chip->status[lun].multi_flag = buf[10];
472 chip->status[lun].multi_card = buf[11];
473 chip->status[lun].log_exist = buf[12];
474 if (chip->status_len == 16) {
475 chip->status[lun].detailed_type.detailed_type1 = buf[13];
476 chip->status[lun].function[0] = buf[14];
477 chip->status[lun].function[1] = buf[15];
478 }
479
480 return 0;
481}
482
483static int enable_oscillator(struct us_data *us)
484{
485 int retval;
486 u8 value;
487
488 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
489 if (retval < 0)
490 return -EIO;
491
492 value |= 0x04;
493 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
494 if (retval < 0)
495 return -EIO;
496
497 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
498 if (retval < 0)
499 return -EIO;
500
501 if (!(value & 0x04))
502 return -EIO;
503
504 return 0;
505}
506
45e1892e 507static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
508{
509 int retval;
45e1892e 510 u8 cmnd[12] = {0};
4898e071 511 u8 *buf;
45e1892e 512
191648d0 513 usb_stor_dbg(us, "addr = 0xfe47, len = %d\n", len);
45e1892e 514
4898e071 515 buf = kmemdup(data, len, GFP_NOIO);
516 if (!buf)
517 return USB_STOR_TRANSPORT_ERROR;
518
45e1892e 519 cmnd[0] = 0xF0;
520 cmnd[1] = 0x0E;
d762ad47
FB		 521 cmnd[2] = 0xfe;
522 cmnd[3] = 0x47;
45e1892e 523 cmnd[4] = (u8)(len >> 8);
524 cmnd[5] = (u8)len;
525
4898e071 526 retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL);
527 kfree(buf);
45e1892e 528 if (retval != USB_STOR_TRANSPORT_GOOD) {
529 return -EIO;
530 }
531
532 return 0;
533}
534
50a6cb93 535static int do_config_autodelink(struct us_data *us, int enable, int force)
536{
537 int retval;
538 u8 value;
539
540 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
541 if (retval < 0)
542 return -EIO;
543
544 if (enable) {
545 if (force)
546 value |= 0x03;
547 else
548 value |= 0x01;
549 } else {
550 value &= ~0x03;
551 }
552
191648d0 553 usb_stor_dbg(us, "set 0xfe47 to 0x%x\n", value);
50a6cb93 554
45e1892e 555 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
556 retval = __do_config_autodelink(us, &value, 1);
50a6cb93 557 if (retval < 0)
558 return -EIO;
559
560 return 0;
561}
562
563static int config_autodelink_after_power_on(struct us_data *us)
564{
565 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
566 int retval;
567 u8 value;
568
569 if (!CHK_AUTO_DELINK(chip))
570 return 0;
571
572 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
573 if (retval < 0)
574 return -EIO;
575
576 if (auto_delink_en) {
577 CLR_BIT(value, 0);
578 CLR_BIT(value, 1);
579 SET_BIT(value, 2);
580
581 if (CHECK_ID(chip, 0x0138, 0x3882))
582 CLR_BIT(value, 2);
583
584 SET_BIT(value, 7);
585
45e1892e 586 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
587 retval = __do_config_autodelink(us, &value, 1);
50a6cb93 588 if (retval < 0)
589 return -EIO;
590
591 retval = enable_oscillator(us);
592 if (retval == 0)
593 (void)do_config_autodelink(us, 1, 0);
594 } else {
595 /* Autodelink controlled by firmware */
596
597 SET_BIT(value, 2);
598
599 if (CHECK_ID(chip, 0x0138, 0x3882))
600 CLR_BIT(value, 2);
601
602 if (CHECK_ID(chip, 0x0159, 0x5889) ||
151d9fad 603 CHECK_ID(chip, 0x0138, 0x3880)) {
50a6cb93 604 CLR_BIT(value, 0);
605 CLR_BIT(value, 7);
606 }
607
45e1892e 608 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
609 retval = __do_config_autodelink(us, &value, 1);
50a6cb93 610 if (retval < 0)
611 return -EIO;
612
613 if (CHECK_ID(chip, 0x0159, 0x5888)) {
614 value = 0xFF;
615 retval = rts51x_write_mem(us, 0xFE79, &value, 1);
616 if (retval < 0)
617 return -EIO;
618
619 value = 0x01;
620 retval = rts51x_write_mem(us, 0x48, &value, 1);
621 if (retval < 0)
622 return -EIO;
623 }
624 }
625
626 return 0;
627}
628
ec5633ba 629#ifdef CONFIG_PM
50a6cb93 630static int config_autodelink_before_power_down(struct us_data *us)
631{
632 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
633 int retval;
634 u8 value;
635
636 if (!CHK_AUTO_DELINK(chip))
637 return 0;
638
639 if (auto_delink_en) {
640 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
641 if (retval < 0)
642 return -EIO;
643
644 SET_BIT(value, 2);
645 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
646 if (retval < 0)
647 return -EIO;
648
649 if (CHECK_ID(chip, 0x0159, 0x5888)) {
650 value = 0x01;
651 retval = rts51x_write_mem(us, 0x48, &value, 1);
652 if (retval < 0)
653 return -EIO;
654 }
655
656 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
657 if (retval < 0)
658 return -EIO;
659
660 SET_BIT(value, 0);
661 if (CHECK_ID(chip, 0x0138, 0x3882))
662 SET_BIT(value, 2);
663 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
664 if (retval < 0)
665 return -EIO;
666 } else {
667 if (CHECK_ID(chip, 0x0159, 0x5889) ||
151d9fad 668 CHECK_ID(chip, 0x0138, 0x3880) ||
669 CHECK_ID(chip, 0x0138, 0x3882)) {
50a6cb93 670 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
671 if (retval < 0)
672 return -EIO;
673
674 if (CHECK_ID(chip, 0x0159, 0x5889) ||
151d9fad 675 CHECK_ID(chip, 0x0138, 0x3880)) {
50a6cb93 676 SET_BIT(value, 0);
677 SET_BIT(value, 7);
678 }
679
680 if (CHECK_ID(chip, 0x0138, 0x3882))
681 SET_BIT(value, 2);
682
45e1892e 683 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
684 retval = __do_config_autodelink(us, &value, 1);
50a6cb93 685 if (retval < 0)
686 return -EIO;
687 }
688
689 if (CHECK_ID(chip, 0x0159, 0x5888)) {
690 value = 0x01;
691 retval = rts51x_write_mem(us, 0x48, &value, 1);
692 if (retval < 0)
693 return -EIO;
694 }
695 }
696
e931830b 697 return 0;
698}
699
700static void fw5895_init(struct us_data *us)
701{
702 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
703 int retval;
704 u8 val;
705
e931830b 706 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
191648d0 707 usb_stor_dbg(us, "Not the specified device, return immediately!\n");
e931830b 708 } else {
709 retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
710 if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
711 val = 0x1F;
712 retval = rts51x_write_mem(us, 0xFD70, &val, 1);
713 if (retval != STATUS_SUCCESS)
191648d0 714 usb_stor_dbg(us, "Write memory fail\n");
e931830b 715 } else {
191648d0 716 usb_stor_dbg(us, "Read memory fail, OR (val & 0x1F) != 0\n");
e931830b 717 }
718 }
e931830b 719}
ec5633ba 720#endif
e931830b 721
722#ifdef CONFIG_REALTEK_AUTOPM
723static void fw5895_set_mmc_wp(struct us_data *us)
724{
725 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
726 int retval;
727 u8 buf[13];
728
e931830b 729 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
191648d0 730 usb_stor_dbg(us, "Not the specified device, return immediately!\n");
e931830b 731 } else {
732 retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
733 if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
734 /* SD Exist and SD WP */
735 retval = rts51x_read_mem(us, 0xD04E, buf, 1);
736 if (retval == STATUS_SUCCESS) {
737 buf[0] |= 0x04;
738 retval = rts51x_write_mem(us, 0xFD70, buf, 1);
739 if (retval != STATUS_SUCCESS)
191648d0 740 usb_stor_dbg(us, "Write memory fail\n");
e931830b 741 } else {
191648d0 742 usb_stor_dbg(us, "Read memory fail\n");
e931830b 743 }
744 } else {
191648d0 745 usb_stor_dbg(us, "Read memory fail, OR (buf[0]&0x24)!=0x24\n");
e931830b 746 }
747 }
e931830b 748}
749
750static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
751{
191648d0
JP		 752 struct us_data *us = chip->us;
753
754 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
e931830b 755
756 chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
757 mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
e931830b 758}
759
760static void rts51x_suspend_timer_fn(unsigned long data)
761{
762 struct rts51x_chip *chip = (struct rts51x_chip *)data;
763 struct us_data *us = chip->us;
764
e931830b 765 switch (rts51x_get_stat(chip)) {
766 case RTS51X_STAT_INIT:
767 case RTS51X_STAT_RUN:
768 rts51x_modi_suspend_timer(chip);
769 break;
770 case RTS51X_STAT_IDLE:
771 case RTS51X_STAT_SS:
191648d0
JP		 772 usb_stor_dbg(us, "RTS51X_STAT_SS, intf->pm_usage_cnt:%d, power.usage:%d\n",
773 atomic_read(&us->pusb_intf->pm_usage_cnt),
774 atomic_read(&us->pusb_intf->dev.power.usage_count));
e931830b 775
776 if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
191648d0 777 usb_stor_dbg(us, "Ready to enter SS state\n");
e931830b 778 rts51x_set_stat(chip, RTS51X_STAT_SS);
779 /* ignore mass storage interface's children */
780 pm_suspend_ignore_children(&us->pusb_intf->dev, true);
b3ef051d 781 usb_autopm_put_interface_async(us->pusb_intf);
191648d0
JP		 782 usb_stor_dbg(us, "RTS51X_STAT_SS 01, intf->pm_usage_cnt:%d, power.usage:%d\n",
783 atomic_read(&us->pusb_intf->pm_usage_cnt),
784 atomic_read(&us->pusb_intf->dev.power.usage_count));
e931830b 785 }
786 break;
787 default:
191648d0 788 usb_stor_dbg(us, "Unknown state !!!\n");
e931830b 789 break;
790 }
e931830b 791}
792
793static inline int working_scsi(struct scsi_cmnd *srb)
794{
795 if ((srb->cmnd[0] == TEST_UNIT_READY) ||
796 (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
797 return 0;
798 }
799
800 return 1;
801}
802
d762ad47 803static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
e931830b 804{
805 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
806 static int card_first_show = 1;
807 static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
808 10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
809 };
810 static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
811 10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
812 };
813 int ret;
814
e931830b 815 if (working_scsi(srb)) {
191648d0
JP		 816 usb_stor_dbg(us, "working scsi, intf->pm_usage_cnt:%d, power.usage:%d\n",
817 atomic_read(&us->pusb_intf->pm_usage_cnt),
818 atomic_read(&us->pusb_intf->dev.power.usage_count));
e931830b 819
820 if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
821 ret = usb_autopm_get_interface(us->pusb_intf);
191648d0 822 usb_stor_dbg(us, "working scsi, ret=%d\n", ret);
e931830b 823 }
824 if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
825 rts51x_set_stat(chip, RTS51X_STAT_RUN);
826 chip->proto_handler_backup(srb, us);
827 } else {
828 if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
191648d0 829 usb_stor_dbg(us, "NOT working scsi\n");
e931830b 830 if ((srb->cmnd[0] == TEST_UNIT_READY) &&
831 (chip->pwr_state == US_SUSPEND)) {
832 if (TST_LUN_READY(chip, srb->device->lun)) {
833 srb->result = SAM_STAT_GOOD;
834 } else {
835 srb->result = SAM_STAT_CHECK_CONDITION;
836 memcpy(srb->sense_buffer,
837 media_not_present,
838 US_SENSE_SIZE);
839 }
191648d0 840 usb_stor_dbg(us, "TEST_UNIT_READY\n");
e931830b 841 goto out;
842 }
843 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
844 int prevent = srb->cmnd[4] & 0x1;
845 if (prevent) {
846 srb->result = SAM_STAT_CHECK_CONDITION;
847 memcpy(srb->sense_buffer,
848 invalid_cmd_field,
849 US_SENSE_SIZE);
850 } else {
851 srb->result = SAM_STAT_GOOD;
852 }
191648d0 853 usb_stor_dbg(us, "ALLOW_MEDIUM_REMOVAL\n");
e931830b 854 goto out;
855 }
856 } else {
191648d0 857 usb_stor_dbg(us, "NOT working scsi, not SS\n");
e931830b 858 chip->proto_handler_backup(srb, us);
48fc7f7e 859 /* Check whether card is plugged in */
e931830b 860 if (srb->cmnd[0] == TEST_UNIT_READY) {
861 if (srb->result == SAM_STAT_GOOD) {
862 SET_LUN_READY(chip, srb->device->lun);
863 if (card_first_show) {
864 card_first_show = 0;
865 fw5895_set_mmc_wp(us);
866 }
867 } else {
868 CLR_LUN_READY(chip, srb->device->lun);
869 card_first_show = 1;
870 }
871 }
872 if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
873 rts51x_set_stat(chip, RTS51X_STAT_IDLE);
874 }
875 }
876out:
191648d0 877 usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
e931830b 878 if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
879 rts51x_modi_suspend_timer(chip);
e931830b 880}
881
882static int realtek_cr_autosuspend_setup(struct us_data *us)
883{
884 struct rts51x_chip *chip;
885 struct rts51x_status *status = NULL;
886 u8 buf[16];
887 int retval;
888
889 chip = (struct rts51x_chip *)us->extra;
890 chip->support_auto_delink = 0;
891 chip->pwr_state = US_RESUME;
892 chip->lun_ready = 0;
893 rts51x_set_stat(chip, RTS51X_STAT_INIT);
894
895 retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
896 if (retval != STATUS_SUCCESS) {
191648d0 897 usb_stor_dbg(us, "Read status fail\n");
e931830b 898 return -EIO;
899 }
900 status = chip->status;
901 status->vid = ((u16) buf[0] << 8) | buf[1];
902 status->pid = ((u16) buf[2] << 8) | buf[3];
903 status->cur_lun = buf[4];
904 status->card_type = buf[5];
905 status->total_lun = buf[6];
906 status->fw_ver = ((u16) buf[7] << 8) | buf[8];
907 status->phy_exist = buf[9];
908 status->multi_flag = buf[10];
909 status->multi_card = buf[11];
910 status->log_exist = buf[12];
911 if (chip->status_len == 16) {
912 status->detailed_type.detailed_type1 = buf[13];
913 status->function[0] = buf[14];
914 status->function[1] = buf[15];
915 }
916
917 /* back up the proto_handler in us->extra */
918 chip = (struct rts51x_chip *)(us->extra);
919 chip->proto_handler_backup = us->proto_handler;
920 /* Set the autosuspend_delay to 0 */
921 pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
922 /* override us->proto_handler setted in get_protocol() */
923 us->proto_handler = rts51x_invoke_transport;
924
925 chip->timer_expires = 0;
926 setup_timer(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn,
927 (unsigned long)chip);
928 fw5895_init(us);
929
a6cd244b 930 /* enable autosuspend function of the usb device */
e931830b 931 usb_enable_autosuspend(us->pusb_dev);
932
50a6cb93 933 return 0;
934}
e931830b 935#endif
50a6cb93 936
937static void realtek_cr_destructor(void *extra)
938{
677a0b5a 939 struct rts51x_chip *chip = extra;
e931830b 940
50a6cb93 941 if (!chip)
942 return;
191648d0 943
e931830b 944#ifdef CONFIG_REALTEK_AUTOPM
945 if (ss_en) {
946 del_timer(&chip->rts51x_suspend_timer);
947 chip->timer_expires = 0;
948 }
949#endif
50a6cb93 950 kfree(chip->status);
951}
952
953#ifdef CONFIG_PM
d762ad47 954static int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
50a6cb93 955{
e931830b 956 struct us_data *us = usb_get_intfdata(iface);
957
e931830b 958 /* wait until no command is running */
959 mutex_lock(&us->dev_mutex);
960
961 config_autodelink_before_power_down(us);
962
963 mutex_unlock(&us->dev_mutex);
964
e931830b 965 return 0;
50a6cb93 966}
e931830b 967
968static int realtek_cr_resume(struct usb_interface *iface)
969{
970 struct us_data *us = usb_get_intfdata(iface);
971
e931830b 972 fw5895_init(us);
973 config_autodelink_after_power_on(us);
974
e931830b 975 return 0;
976}
977#else
978#define realtek_cr_suspend NULL
979#define realtek_cr_resume NULL
50a6cb93 980#endif
981
982static int init_realtek_cr(struct us_data *us)
983{
984 struct rts51x_chip *chip;
985 int size, i, retval;
986
987 chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
988 if (!chip)
989 return -ENOMEM;
990
991 us->extra = chip;
992 us->extra_destructor = realtek_cr_destructor;
50a6cb93 993 us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
1c9e55cd 994 chip->us = us;
50a6cb93 995
191648d0 996 usb_stor_dbg(us, "chip->max_lun = %d\n", chip->max_lun);
50a6cb93 997
998 size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
999 chip->status = kzalloc(size, GFP_KERNEL);
1000 if (!chip->status)
1001 goto INIT_FAIL;
1002
1003 for (i = 0; i <= (int)(chip->max_lun); i++) {
151d9fad 1004 retval = rts51x_check_status(us, (u8) i);
50a6cb93 1005 if (retval < 0)
1006 goto INIT_FAIL;
1007 }
1008
1009 if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
151d9fad 1010 CHECK_FW_VER(chip, 0x5901))
50a6cb93 1011 SET_AUTO_DELINK(chip);
1012 if (STATUS_LEN(chip) == 16) {
1013 if (SUPPORT_AUTO_DELINK(chip))
1014 SET_AUTO_DELINK(chip);
1015 }
e931830b 1016#ifdef CONFIG_REALTEK_AUTOPM
1c9e55cd 1017 if (ss_en)
e931830b 1018 realtek_cr_autosuspend_setup(us);
e931830b 1019#endif
50a6cb93 1020
191648d0 1021 usb_stor_dbg(us, "chip->flag = 0x%x\n", chip->flag);
50a6cb93 1022
1023 (void)config_autodelink_after_power_on(us);
1024
1025 return 0;
1026
1027INIT_FAIL:
1028 if (us->extra) {
1029 kfree(chip->status);
1030 kfree(us->extra);
1031 us->extra = NULL;
1032 }
1033
1034 return -EIO;
1035}
1036
1037static int realtek_cr_probe(struct usb_interface *intf,
151d9fad 1038 const struct usb_device_id *id)
50a6cb93 1039{
1040 struct us_data *us;
1041 int result;
1042
191648d0 1043 dev_dbg(&intf->dev, "Probe Realtek Card Reader!\n");
50a6cb93 1044
1045 result = usb_stor_probe1(&us, intf, id,
151d9fad 1046 (id - realtek_cr_ids) +
1047 realtek_cr_unusual_dev_list);
50a6cb93 1048 if (result)
1049 return result;
1050
1051 result = usb_stor_probe2(us);
151d9fad 1052
50a6cb93 1053 return result;
1054}
1055
1056static struct usb_driver realtek_cr_driver = {
151d9fad 1057 .name = "ums-realtek",
1058 .probe = realtek_cr_probe,
1059 .disconnect = usb_stor_disconnect,
e931830b 1060 /* .suspend = usb_stor_suspend, */
1061 /* .resume = usb_stor_resume, */
151d9fad 1062 .reset_resume = usb_stor_reset_resume,
e931830b 1063 .suspend = realtek_cr_suspend,
1064 .resume = realtek_cr_resume,
151d9fad 1065 .pre_reset = usb_stor_pre_reset,
1066 .post_reset = usb_stor_post_reset,
1067 .id_table = realtek_cr_ids,
1068 .soft_unbind = 1,
e931830b 1069 .supports_autosuspend = 1,
e73b2db6 1070 .no_dynamic_id = 1,
50a6cb93 1071};
1072
65db4305 1073module_usb_driver(realtek_cr_driver);
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