1 /* Driver for Realtek RTS51xx USB card reader
3 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
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
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.
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/>.
19 * wwang (wei_wang@realsil.com.cn)
20 * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
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>
29 #include <scsi/scsi.h>
30 #include <scsi/scsi_cmnd.h>
31 #include <scsi/scsi_device.h>
32 #include <linux/cdrom.h>
34 #include <linux/usb.h>
35 #include <linux/slab.h>
36 #include <linux/usb_usual.h>
39 #include "transport.h"
43 MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
44 MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION("1.03");
48 static int auto_delink_en = 1;
49 module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
50 MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
52 #ifdef CONFIG_REALTEK_AUTOPM
54 module_param(ss_en, int, S_IRUGO | S_IWUSR);
55 MODULE_PARM_DESC(ss_en, "enable selective suspend");
57 static int ss_delay = 50;
58 module_param(ss_delay, int, S_IRUGO | S_IWUSR);
59 MODULE_PARM_DESC(ss_delay,
60 "seconds to delay before entering selective suspend");
69 #define POLLING_INTERVAL 50
71 #define rts51x_set_stat(chip, stat) \
72 ((chip)->state = (enum RTS51X_STAT)(stat))
73 #define rts51x_get_stat(chip) ((chip)->state)
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)))
81 struct rts51x_status {
104 struct rts51x_status *status;
108 #ifdef CONFIG_REALTEK_AUTOPM
110 struct timer_list rts51x_suspend_timer;
111 unsigned long timer_expires;
114 enum RTS51X_STAT state;
115 int support_auto_delink;
117 /* used to back up the protocal choosen in probe1 phase */
118 proto_cmnd proto_handler_backup;
121 /* flag definition */
122 #define FLIDX_AUTO_DELINK 0x01
124 #define SCSI_LUN(srb) ((srb)->device->lun)
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)))
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)
135 #define RTS51X_GET_VID(chip) ((chip)->vendor_id)
136 #define RTS51X_GET_PID(chip) ((chip)->product_id)
138 #define VENDOR_ID(chip) ((chip)->status[0].vid)
139 #define PRODUCT_ID(chip) ((chip)->status[0].pid)
140 #define FW_VERSION(chip) ((chip)->status[0].fw_ver)
141 #define STATUS_LEN(chip) ((chip)->status_len)
143 #define STATUS_SUCCESS 0
144 #define STATUS_FAIL 1
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)
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)))
165 static int init_realtek_cr(struct us_data *us);
168 * The table of devices
170 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
171 vendorName, productName, useProtocol, useTransport, \
172 initFunction, flags) \
174 USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
175 .driver_info = (flags) \
178 static const struct usb_device_id realtek_cr_ids[] = {
179 # include "unusual_realtek.h"
180 {} /* Terminating entry */
183 MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
190 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
191 vendor_name, product_name, use_protocol, use_transport, \
192 init_function, Flags) \
194 .vendorName = vendor_name, \
195 .productName = product_name, \
196 .useProtocol = use_protocol, \
197 .useTransport = use_transport, \
198 .initFunction = init_function, \
201 static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
202 # include "unusual_realtek.h"
203 {} /* Terminating entry */
208 static 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)
212 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
213 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
215 unsigned int residue;
217 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
219 /* set up the command wrapper */
220 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
221 bcb->DataTransferLength = cpu_to_le32(buf_len);
222 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
223 bcb->Tag = ++us->tag;
225 bcb->Length = cmd_len;
227 /* copy the command payload */
228 memset(bcb->CDB, 0, sizeof(bcb->CDB));
229 memcpy(bcb->CDB, cmd, bcb->Length);
231 /* send it to out endpoint */
232 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
234 if (result != USB_STOR_XFER_GOOD)
235 return USB_STOR_TRANSPORT_ERROR;
238 /* send/receive data payload, if there is any */
240 if (buf && buf_len) {
241 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
242 us->recv_bulk_pipe : us->send_bulk_pipe;
243 result = usb_stor_bulk_transfer_buf(us, pipe,
245 if (result == USB_STOR_XFER_ERROR)
246 return USB_STOR_TRANSPORT_ERROR;
249 /* get CSW for device status */
250 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
251 bcs, US_BULK_CS_WRAP_LEN, &cswlen);
252 if (result != USB_STOR_XFER_GOOD)
253 return USB_STOR_TRANSPORT_ERROR;
255 /* check bulk status */
256 if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
257 US_DEBUGP("Signature mismatch: got %08X, expecting %08X\n",
258 le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
259 return USB_STOR_TRANSPORT_ERROR;
262 residue = bcs->Residue;
263 if (bcs->Tag != us->tag)
264 return USB_STOR_TRANSPORT_ERROR;
266 /* try to compute the actual residue, based on how much data
267 * was really transferred and what the device tells us */
269 residue = residue < buf_len ? residue : buf_len;
272 *act_len = buf_len - residue;
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;
280 case US_BULK_STAT_FAIL:
282 return USB_STOR_TRANSPORT_FAILED;
284 case US_BULK_STAT_PHASE:
285 /* phase error -- note that a transport reset will be
286 * invoked by the invoke_transport() function
288 return USB_STOR_TRANSPORT_ERROR;
291 /* we should never get here, but if we do, we're in trouble */
292 return USB_STOR_TRANSPORT_ERROR;
295 static 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)
299 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
300 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
303 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
305 /* set up the command wrapper */
306 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
307 bcb->DataTransferLength = cpu_to_le32(buf_len);
308 bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
309 bcb->Tag = ++us->tag;
311 bcb->Length = cmd_len;
313 /* copy the command payload */
314 memset(bcb->CDB, 0, sizeof(bcb->CDB));
315 memcpy(bcb->CDB, cmd, bcb->Length);
317 /* send it to out endpoint */
318 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
320 if (result != USB_STOR_XFER_GOOD)
321 return USB_STOR_TRANSPORT_ERROR;
324 /* send/receive data payload, if there is any */
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,
331 if (result == USB_STOR_XFER_ERROR)
332 return USB_STOR_TRANSPORT_ERROR;
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);
341 /* Determine what the maximum LUN supported is */
342 static int rts51x_get_max_lun(struct us_data *us)
346 /* issue the command */
348 result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
350 USB_DIR_IN | USB_TYPE_CLASS |
352 0, us->ifnum, us->iobuf, 1, 10 * HZ);
354 US_DEBUGP("GetMaxLUN command result is %d, data is %d\n",
355 result, us->iobuf[0]);
357 /* if we have a successful request, return the result */
364 static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
370 buf = kmalloc(len, GFP_NOIO);
372 return USB_STOR_TRANSPORT_ERROR;
374 US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
378 cmnd[2] = (u8) (addr >> 8);
380 cmnd[4] = (u8) (len >> 8);
383 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
384 buf, len, DMA_FROM_DEVICE, NULL);
385 if (retval != USB_STOR_TRANSPORT_GOOD) {
390 memcpy(data, buf, len);
395 static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
401 buf = kmemdup(data, len, GFP_NOIO);
403 return USB_STOR_TRANSPORT_ERROR;
405 US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
409 cmnd[2] = (u8) (addr >> 8);
411 cmnd[4] = (u8) (len >> 8);
414 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
415 buf, len, DMA_TO_DEVICE, NULL);
417 if (retval != USB_STOR_TRANSPORT_GOOD)
423 static int rts51x_read_status(struct us_data *us,
424 u8 lun, u8 *status, int len, int *actlen)
430 buf = kmalloc(len, GFP_NOIO);
432 return USB_STOR_TRANSPORT_ERROR;
434 US_DEBUGP("%s, lun = %d\n", __func__, lun);
439 retval = rts51x_bulk_transport(us, lun, cmnd, 12,
440 buf, len, DMA_FROM_DEVICE, actlen);
441 if (retval != USB_STOR_TRANSPORT_GOOD) {
446 memcpy(status, buf, len);
451 static int rts51x_check_status(struct us_data *us, u8 lun)
453 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
457 retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
461 US_DEBUGP("chip->status_len = %d\n", chip->status_len);
463 chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
464 chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
465 chip->status[lun].cur_lun = buf[4];
466 chip->status[lun].card_type = buf[5];
467 chip->status[lun].total_lun = buf[6];
468 chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
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];
482 static int enable_oscillator(struct us_data *us)
487 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
492 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
496 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
506 static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
512 US_DEBUGP("%s, addr = 0xfe47, len = %d\n", __FUNCTION__, len);
514 buf = kmemdup(data, len, GFP_NOIO);
516 return USB_STOR_TRANSPORT_ERROR;
522 cmnd[4] = (u8)(len >> 8);
525 retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL);
527 if (retval != USB_STOR_TRANSPORT_GOOD) {
534 static int do_config_autodelink(struct us_data *us, int enable, int force)
539 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
552 US_DEBUGP("In %s,set 0xfe47 to 0x%x\n", __func__, value);
554 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
555 retval = __do_config_autodelink(us, &value, 1);
562 static int config_autodelink_after_power_on(struct us_data *us)
564 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
568 US_DEBUGP("%s: <---\n", __func__);
570 if (!CHK_AUTO_DELINK(chip))
573 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
577 if (auto_delink_en) {
582 if (CHECK_ID(chip, 0x0138, 0x3882))
587 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
588 retval = __do_config_autodelink(us, &value, 1);
592 retval = enable_oscillator(us);
594 (void)do_config_autodelink(us, 1, 0);
596 /* Autodelink controlled by firmware */
600 if (CHECK_ID(chip, 0x0138, 0x3882))
603 if (CHECK_ID(chip, 0x0159, 0x5889) ||
604 CHECK_ID(chip, 0x0138, 0x3880)) {
609 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
610 retval = __do_config_autodelink(us, &value, 1);
614 if (CHECK_ID(chip, 0x0159, 0x5888)) {
616 retval = rts51x_write_mem(us, 0xFE79, &value, 1);
621 retval = rts51x_write_mem(us, 0x48, &value, 1);
627 US_DEBUGP("%s: --->\n", __func__);
632 static int config_autodelink_before_power_down(struct us_data *us)
634 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
638 US_DEBUGP("%s: <---\n", __func__);
640 if (!CHK_AUTO_DELINK(chip))
643 if (auto_delink_en) {
644 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
649 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
653 if (CHECK_ID(chip, 0x0159, 0x5888)) {
655 retval = rts51x_write_mem(us, 0x48, &value, 1);
660 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
665 if (CHECK_ID(chip, 0x0138, 0x3882))
667 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
671 if (CHECK_ID(chip, 0x0159, 0x5889) ||
672 CHECK_ID(chip, 0x0138, 0x3880) ||
673 CHECK_ID(chip, 0x0138, 0x3882)) {
674 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
678 if (CHECK_ID(chip, 0x0159, 0x5889) ||
679 CHECK_ID(chip, 0x0138, 0x3880)) {
684 if (CHECK_ID(chip, 0x0138, 0x3882))
687 /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
688 retval = __do_config_autodelink(us, &value, 1);
693 if (CHECK_ID(chip, 0x0159, 0x5888)) {
695 retval = rts51x_write_mem(us, 0x48, &value, 1);
701 US_DEBUGP("%s: --->\n", __func__);
706 static void fw5895_init(struct us_data *us)
708 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
712 US_DEBUGP("%s: <---\n", __func__);
714 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
715 US_DEBUGP("Not the specified device, return immediately!\n");
717 retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
718 if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
720 retval = rts51x_write_mem(us, 0xFD70, &val, 1);
721 if (retval != STATUS_SUCCESS)
722 US_DEBUGP("Write memory fail\n");
724 US_DEBUGP("Read memory fail, OR (val & 0x1F) != 0\n");
728 US_DEBUGP("%s: --->\n", __func__);
731 #ifdef CONFIG_REALTEK_AUTOPM
732 static void fw5895_set_mmc_wp(struct us_data *us)
734 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
738 US_DEBUGP("%s: <---\n", __func__);
740 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
741 US_DEBUGP("Not the specified device, return immediately!\n");
743 retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
744 if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
745 /* SD Exist and SD WP */
746 retval = rts51x_read_mem(us, 0xD04E, buf, 1);
747 if (retval == STATUS_SUCCESS) {
749 retval = rts51x_write_mem(us, 0xFD70, buf, 1);
750 if (retval != STATUS_SUCCESS)
751 US_DEBUGP("Write memory fail\n");
753 US_DEBUGP("Read memory fail\n");
756 US_DEBUGP("Read memory fail, OR (buf[0]&0x24)!=0x24\n");
760 US_DEBUGP("%s: --->\n", __func__);
763 static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
765 US_DEBUGP("%s: <---, state:%d\n", __func__, rts51x_get_stat(chip));
767 chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
768 mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
770 US_DEBUGP("%s: --->\n", __func__);
773 static void rts51x_suspend_timer_fn(unsigned long data)
775 struct rts51x_chip *chip = (struct rts51x_chip *)data;
776 struct us_data *us = chip->us;
778 US_DEBUGP("%s: <---\n", __func__);
780 switch (rts51x_get_stat(chip)) {
781 case RTS51X_STAT_INIT:
782 case RTS51X_STAT_RUN:
783 rts51x_modi_suspend_timer(chip);
785 case RTS51X_STAT_IDLE:
787 US_DEBUGP("%s: RTS51X_STAT_SS, intf->pm_usage_cnt:%d,"
788 "power.usage:%d\n", __func__,
789 atomic_read(&us->pusb_intf->pm_usage_cnt),
790 atomic_read(&us->pusb_intf->dev.power.usage_count));
792 if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
793 US_DEBUGP("%s: Ready to enter SS state.\n",
795 rts51x_set_stat(chip, RTS51X_STAT_SS);
796 /* ignore mass storage interface's children */
797 pm_suspend_ignore_children(&us->pusb_intf->dev, true);
798 usb_autopm_put_interface_async(us->pusb_intf);
799 US_DEBUGP("%s: RTS51X_STAT_SS 01,"
800 "intf->pm_usage_cnt:%d, power.usage:%d\n",
802 atomic_read(&us->pusb_intf->pm_usage_cnt),
804 &us->pusb_intf->dev.power.usage_count));
808 US_DEBUGP("%s: Unknonwn state !!!\n", __func__);
812 US_DEBUGP("%s: --->\n", __func__);
815 static inline int working_scsi(struct scsi_cmnd *srb)
817 if ((srb->cmnd[0] == TEST_UNIT_READY) ||
818 (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
825 static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
827 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
828 static int card_first_show = 1;
829 static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
830 10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
832 static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
833 10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
837 US_DEBUGP("%s: <---\n", __func__);
839 if (working_scsi(srb)) {
840 US_DEBUGP("%s: working scsi, intf->pm_usage_cnt:%d,"
841 "power.usage:%d\n", __func__,
842 atomic_read(&us->pusb_intf->pm_usage_cnt),
843 atomic_read(&us->pusb_intf->dev.power.usage_count));
845 if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
846 ret = usb_autopm_get_interface(us->pusb_intf);
847 US_DEBUGP("%s: working scsi, ret=%d\n", __func__, ret);
849 if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
850 rts51x_set_stat(chip, RTS51X_STAT_RUN);
851 chip->proto_handler_backup(srb, us);
853 if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
854 US_DEBUGP("%s: NOT working scsi\n", __func__);
855 if ((srb->cmnd[0] == TEST_UNIT_READY) &&
856 (chip->pwr_state == US_SUSPEND)) {
857 if (TST_LUN_READY(chip, srb->device->lun)) {
858 srb->result = SAM_STAT_GOOD;
860 srb->result = SAM_STAT_CHECK_CONDITION;
861 memcpy(srb->sense_buffer,
865 US_DEBUGP("%s: TEST_UNIT_READY--->\n",
869 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
870 int prevent = srb->cmnd[4] & 0x1;
872 srb->result = SAM_STAT_CHECK_CONDITION;
873 memcpy(srb->sense_buffer,
877 srb->result = SAM_STAT_GOOD;
879 US_DEBUGP("%s: ALLOW_MEDIUM_REMOVAL--->\n",
884 US_DEBUGP("%s: NOT working scsi, not SS\n", __func__);
885 chip->proto_handler_backup(srb, us);
886 /* Check whether card is plugged in */
887 if (srb->cmnd[0] == TEST_UNIT_READY) {
888 if (srb->result == SAM_STAT_GOOD) {
889 SET_LUN_READY(chip, srb->device->lun);
890 if (card_first_show) {
892 fw5895_set_mmc_wp(us);
895 CLR_LUN_READY(chip, srb->device->lun);
899 if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
900 rts51x_set_stat(chip, RTS51X_STAT_IDLE);
904 US_DEBUGP("%s: state:%d\n", __func__, rts51x_get_stat(chip));
905 if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
906 rts51x_modi_suspend_timer(chip);
908 US_DEBUGP("%s: --->\n", __func__);
911 static int realtek_cr_autosuspend_setup(struct us_data *us)
913 struct rts51x_chip *chip;
914 struct rts51x_status *status = NULL;
918 chip = (struct rts51x_chip *)us->extra;
919 chip->support_auto_delink = 0;
920 chip->pwr_state = US_RESUME;
922 rts51x_set_stat(chip, RTS51X_STAT_INIT);
924 retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
925 if (retval != STATUS_SUCCESS) {
926 US_DEBUGP("Read status fail\n");
929 status = chip->status;
930 status->vid = ((u16) buf[0] << 8) | buf[1];
931 status->pid = ((u16) buf[2] << 8) | buf[3];
932 status->cur_lun = buf[4];
933 status->card_type = buf[5];
934 status->total_lun = buf[6];
935 status->fw_ver = ((u16) buf[7] << 8) | buf[8];
936 status->phy_exist = buf[9];
937 status->multi_flag = buf[10];
938 status->multi_card = buf[11];
939 status->log_exist = buf[12];
940 if (chip->status_len == 16) {
941 status->detailed_type.detailed_type1 = buf[13];
942 status->function[0] = buf[14];
943 status->function[1] = buf[15];
946 /* back up the proto_handler in us->extra */
947 chip = (struct rts51x_chip *)(us->extra);
948 chip->proto_handler_backup = us->proto_handler;
949 /* Set the autosuspend_delay to 0 */
950 pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
951 /* override us->proto_handler setted in get_protocol() */
952 us->proto_handler = rts51x_invoke_transport;
954 chip->timer_expires = 0;
955 setup_timer(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn,
956 (unsigned long)chip);
959 /* enable autosuspend funciton of the usb device */
960 usb_enable_autosuspend(us->pusb_dev);
966 static void realtek_cr_destructor(void *extra)
968 struct rts51x_chip *chip = (struct rts51x_chip *)extra;
970 US_DEBUGP("%s: <---\n", __func__);
974 #ifdef CONFIG_REALTEK_AUTOPM
976 del_timer(&chip->rts51x_suspend_timer);
977 chip->timer_expires = 0;
984 static int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
986 struct us_data *us = usb_get_intfdata(iface);
988 US_DEBUGP("%s: <---\n", __func__);
990 /* wait until no command is running */
991 mutex_lock(&us->dev_mutex);
993 config_autodelink_before_power_down(us);
995 mutex_unlock(&us->dev_mutex);
997 US_DEBUGP("%s: --->\n", __func__);
1002 static int realtek_cr_resume(struct usb_interface *iface)
1004 struct us_data *us = usb_get_intfdata(iface);
1006 US_DEBUGP("%s: <---\n", __func__);
1009 config_autodelink_after_power_on(us);
1011 US_DEBUGP("%s: --->\n", __func__);
1016 #define realtek_cr_suspend NULL
1017 #define realtek_cr_resume NULL
1020 static int init_realtek_cr(struct us_data *us)
1022 struct rts51x_chip *chip;
1023 int size, i, retval;
1025 chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
1030 us->extra_destructor = realtek_cr_destructor;
1031 us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
1033 US_DEBUGP("chip->max_lun = %d\n", chip->max_lun);
1035 size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
1036 chip->status = kzalloc(size, GFP_KERNEL);
1040 for (i = 0; i <= (int)(chip->max_lun); i++) {
1041 retval = rts51x_check_status(us, (u8) i);
1046 if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
1047 CHECK_FW_VER(chip, 0x5901))
1048 SET_AUTO_DELINK(chip);
1049 if (STATUS_LEN(chip) == 16) {
1050 if (SUPPORT_AUTO_DELINK(chip))
1051 SET_AUTO_DELINK(chip);
1053 #ifdef CONFIG_REALTEK_AUTOPM
1056 realtek_cr_autosuspend_setup(us);
1060 US_DEBUGP("chip->flag = 0x%x\n", chip->flag);
1062 (void)config_autodelink_after_power_on(us);
1068 kfree(chip->status);
1076 static int realtek_cr_probe(struct usb_interface *intf,
1077 const struct usb_device_id *id)
1082 US_DEBUGP("Probe Realtek Card Reader!\n");
1084 result = usb_stor_probe1(&us, intf, id,
1085 (id - realtek_cr_ids) +
1086 realtek_cr_unusual_dev_list);
1090 result = usb_stor_probe2(us);
1095 static struct usb_driver realtek_cr_driver = {
1096 .name = "ums-realtek",
1097 .probe = realtek_cr_probe,
1098 .disconnect = usb_stor_disconnect,
1099 /* .suspend = usb_stor_suspend, */
1100 /* .resume = usb_stor_resume, */
1101 .reset_resume = usb_stor_reset_resume,
1102 .suspend = realtek_cr_suspend,
1103 .resume = realtek_cr_resume,
1104 .pre_reset = usb_stor_pre_reset,
1105 .post_reset = usb_stor_post_reset,
1106 .id_table = realtek_cr_ids,
1108 .supports_autosuspend = 1,
1112 module_usb_driver(realtek_cr_driver);