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