// SPDX-License-Identifier: GPL-2.0+
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/*
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* Driver for Realtek RTS51xx USB card reader
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*
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* Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
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*
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* Author:
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* wwang (wei_wang@realsil.com.cn)
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* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
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*/
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#include <linux/module.h>
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#include <linux/blkdev.h>
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#include <linux/kthread.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <linux/cdrom.h>
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#include <linux/usb.h>
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#include <linux/slab.h>
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#include <linux/usb_usual.h>
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#include "usb.h"
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#include "transport.h"
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#include "protocol.h"
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#include "debug.h"
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#include "scsiglue.h"
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#define DRV_NAME "ums-realtek"
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MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
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MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(USB_STORAGE);
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static int auto_delink_en = 1;
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module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(auto_delink_en, "auto delink mode (0=firmware, 1=software [default])");
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#ifdef CONFIG_REALTEK_AUTOPM
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static int ss_en = 1;
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module_param(ss_en, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ss_en, "enable selective suspend");
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static int ss_delay = 50;
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module_param(ss_delay, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ss_delay,
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"seconds to delay before entering selective suspend");
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enum RTS51X_STAT {
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RTS51X_STAT_INIT,
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RTS51X_STAT_IDLE,
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RTS51X_STAT_RUN,
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RTS51X_STAT_SS
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};
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#define POLLING_INTERVAL 50
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#define rts51x_set_stat(chip, stat) \
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((chip)->state = (enum RTS51X_STAT)(stat))
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#define rts51x_get_stat(chip) ((chip)->state)
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#define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun)))
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#define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun)))
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#define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun)))
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#endif
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struct rts51x_status {
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u16 vid;
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u16 pid;
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u8 cur_lun;
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u8 card_type;
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u8 total_lun;
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u16 fw_ver;
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u8 phy_exist;
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u8 multi_flag;
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u8 multi_card;
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u8 log_exist;
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union {
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u8 detailed_type1;
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u8 detailed_type2;
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} detailed_type;
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u8 function[2];
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};
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struct rts51x_chip {
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u16 vendor_id;
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u16 product_id;
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char max_lun;
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struct rts51x_status *status;
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int status_len;
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u32 flag;
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struct us_data *us;
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#ifdef CONFIG_REALTEK_AUTOPM
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struct timer_list rts51x_suspend_timer;
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unsigned long timer_expires;
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int pwr_state;
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u8 lun_ready;
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enum RTS51X_STAT state;
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int support_auto_delink;
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#endif
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/* used to back up the protocol chosen in probe1 phase */
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proto_cmnd proto_handler_backup;
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};
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/* flag definition */
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#define FLIDX_AUTO_DELINK 0x01
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#define SCSI_LUN(srb) ((srb)->device->lun)
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/* Bit Operation */
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#define SET_BIT(data, idx) ((data) |= 1 << (idx))
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#define CLR_BIT(data, idx) ((data) &= ~(1 << (idx)))
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#define CHK_BIT(data, idx) ((data) & (1 << (idx)))
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#define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK)
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#define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK)
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#define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK)
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#define RTS51X_GET_VID(chip) ((chip)->vendor_id)
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#define RTS51X_GET_PID(chip) ((chip)->product_id)
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#define VENDOR_ID(chip) ((chip)->status[0].vid)
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#define PRODUCT_ID(chip) ((chip)->status[0].pid)
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#define FW_VERSION(chip) ((chip)->status[0].fw_ver)
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#define STATUS_LEN(chip) ((chip)->status_len)
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#define STATUS_SUCCESS 0
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#define STATUS_FAIL 1
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/* Check card reader function */
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#define SUPPORT_DETAILED_TYPE1(chip) \
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CHK_BIT((chip)->status[0].function[0], 1)
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#define SUPPORT_OT(chip) \
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CHK_BIT((chip)->status[0].function[0], 2)
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#define SUPPORT_OC(chip) \
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CHK_BIT((chip)->status[0].function[0], 3)
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#define SUPPORT_AUTO_DELINK(chip) \
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CHK_BIT((chip)->status[0].function[0], 4)
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#define SUPPORT_SDIO(chip) \
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CHK_BIT((chip)->status[0].function[1], 0)
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#define SUPPORT_DETAILED_TYPE2(chip) \
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CHK_BIT((chip)->status[0].function[1], 1)
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#define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid))
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#define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver))
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#define CHECK_ID(chip, pid, fw_ver) \
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(CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
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static int init_realtek_cr(struct us_data *us);
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/*
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* The table of devices
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*/
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#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
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vendorName, productName, useProtocol, useTransport, \
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initFunction, flags) \
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{\
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USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
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.driver_info = (flags) \
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}
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static const struct usb_device_id realtek_cr_ids[] = {
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# include "unusual_realtek.h"
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
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#undef UNUSUAL_DEV
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/*
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* The flags table
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*/
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#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
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vendor_name, product_name, use_protocol, use_transport, \
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init_function, Flags) \
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{ \
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.vendorName = vendor_name, \
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.productName = product_name, \
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.useProtocol = use_protocol, \
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.useTransport = use_transport, \
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.initFunction = init_function, \
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}
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static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
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# include "unusual_realtek.h"
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{} /* Terminating entry */
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};
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#undef UNUSUAL_DEV
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static int rts51x_bulk_transport(struct us_data *us, u8 lun,
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u8 *cmd, int cmd_len, u8 *buf, int buf_len,
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enum dma_data_direction dir, int *act_len)
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{
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struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
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struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
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int result;
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unsigned int residue;
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unsigned int cswlen;
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unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
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/* set up the command wrapper */
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bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
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bcb->DataTransferLength = cpu_to_le32(buf_len);
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bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
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bcb->Tag = ++us->tag;
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bcb->Lun = lun;
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bcb->Length = cmd_len;
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/* copy the command payload */
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memset(bcb->CDB, 0, sizeof(bcb->CDB));
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memcpy(bcb->CDB, cmd, bcb->Length);
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/* send it to out endpoint */
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result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
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bcb, cbwlen, NULL);
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if (result != USB_STOR_XFER_GOOD)
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return USB_STOR_TRANSPORT_ERROR;
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/* DATA STAGE */
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/* send/receive data payload, if there is any */
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if (buf && buf_len) {
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unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
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us->recv_bulk_pipe : us->send_bulk_pipe;
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result = usb_stor_bulk_transfer_buf(us, pipe,
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buf, buf_len, NULL);
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if (result == USB_STOR_XFER_ERROR)
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return USB_STOR_TRANSPORT_ERROR;
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}
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/* get CSW for device status */
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result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
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bcs, US_BULK_CS_WRAP_LEN, &cswlen);
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if (result != USB_STOR_XFER_GOOD)
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return USB_STOR_TRANSPORT_ERROR;
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/* check bulk status */
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if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
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usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n",
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le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
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return USB_STOR_TRANSPORT_ERROR;
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}
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residue = bcs->Residue;
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if (bcs->Tag != us->tag)
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return USB_STOR_TRANSPORT_ERROR;
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/*
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* try to compute the actual residue, based on how much data
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* was really transferred and what the device tells us
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*/
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if (residue)
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residue = residue < buf_len ? residue : buf_len;
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if (act_len)
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*act_len = buf_len - residue;
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/* based on the status code, we report good or bad */
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switch (bcs->Status) {
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case US_BULK_STAT_OK:
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/* command good -- note that data could be short */
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return USB_STOR_TRANSPORT_GOOD;
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case US_BULK_STAT_FAIL:
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/* command failed */
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return USB_STOR_TRANSPORT_FAILED;
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case US_BULK_STAT_PHASE:
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/*
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* phase error -- note that a transport reset will be
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* invoked by the invoke_transport() function
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*/
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return USB_STOR_TRANSPORT_ERROR;
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}
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/* we should never get here, but if we do, we're in trouble */
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return USB_STOR_TRANSPORT_ERROR;
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}
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static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
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u8 *cmd, int cmd_len, u8 *buf, int buf_len,
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enum dma_data_direction dir, int *act_len)
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{
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struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
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struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
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int result;
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unsigned int cswlen;
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unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
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/* set up the command wrapper */
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bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
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bcb->DataTransferLength = cpu_to_le32(buf_len);
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bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
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bcb->Tag = ++us->tag;
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bcb->Lun = lun;
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bcb->Length = cmd_len;
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/* copy the command payload */
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memset(bcb->CDB, 0, sizeof(bcb->CDB));
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memcpy(bcb->CDB, cmd, bcb->Length);
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/* send it to out endpoint */
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result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
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bcb, cbwlen, NULL);
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if (result != USB_STOR_XFER_GOOD)
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return USB_STOR_TRANSPORT_ERROR;
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/* DATA STAGE */
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/* send/receive data payload, if there is any */
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if (buf && buf_len) {
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unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
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us->recv_bulk_pipe : us->send_bulk_pipe;
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result = usb_stor_bulk_transfer_buf(us, pipe,
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buf, buf_len, NULL);
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if (result == USB_STOR_XFER_ERROR)
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return USB_STOR_TRANSPORT_ERROR;
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}
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/* get CSW for device status */
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result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs,
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US_BULK_CS_WRAP_LEN, &cswlen, 250);
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return result;
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}
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/* Determine what the maximum LUN supported is */
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static int rts51x_get_max_lun(struct us_data *us)
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{
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int result;
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/* issue the command */
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us->iobuf[0] = 0;
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result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
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US_BULK_GET_MAX_LUN,
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USB_DIR_IN | USB_TYPE_CLASS |
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USB_RECIP_INTERFACE,
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0, us->ifnum, us->iobuf, 1, 10 * HZ);
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usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n",
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result, us->iobuf[0]);
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/* if we have a successful request, return the result */
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if (result > 0)
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return us->iobuf[0];
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return 0;
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}
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static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
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{
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int retval;
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u8 cmnd[12] = { 0 };
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u8 *buf;
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buf = kmalloc(len, GFP_NOIO);
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if (buf == NULL)
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return -ENOMEM;
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usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
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cmnd[0] = 0xF0;
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cmnd[1] = 0x0D;
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cmnd[2] = (u8) (addr >> 8);
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cmnd[3] = (u8) addr;
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cmnd[4] = (u8) (len >> 8);
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cmnd[5] = (u8) len;
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retval = rts51x_bulk_transport(us, 0, cmnd, 12,
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buf, len, DMA_FROM_DEVICE, NULL);
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if (retval != USB_STOR_TRANSPORT_GOOD) {
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kfree(buf);
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return -EIO;
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}
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memcpy(data, buf, len);
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kfree(buf);
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return 0;
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}
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static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
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{
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int retval;
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u8 cmnd[12] = { 0 };
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u8 *buf;
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buf = kmemdup(data, len, GFP_NOIO);
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if (buf == NULL)
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return USB_STOR_TRANSPORT_ERROR;
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usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
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cmnd[0] = 0xF0;
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cmnd[1] = 0x0E;
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cmnd[2] = (u8) (addr >> 8);
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cmnd[3] = (u8) addr;
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cmnd[4] = (u8) (len >> 8);
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cmnd[5] = (u8) len;
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retval = rts51x_bulk_transport(us, 0, cmnd, 12,
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buf, len, DMA_TO_DEVICE, NULL);
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kfree(buf);
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if (retval != USB_STOR_TRANSPORT_GOOD)
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return -EIO;
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return 0;
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}
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static int rts51x_read_status(struct us_data *us,
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u8 lun, u8 *status, int len, int *actlen)
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{
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int retval;
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u8 cmnd[12] = { 0 };
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u8 *buf;
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buf = kmalloc(len, GFP_NOIO);
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if (buf == NULL)
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return USB_STOR_TRANSPORT_ERROR;
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usb_stor_dbg(us, "lun = %d\n", lun);
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cmnd[0] = 0xF0;
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cmnd[1] = 0x09;
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retval = rts51x_bulk_transport(us, lun, cmnd, 12,
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buf, len, DMA_FROM_DEVICE, actlen);
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if (retval != USB_STOR_TRANSPORT_GOOD) {
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kfree(buf);
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return -EIO;
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}
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memcpy(status, buf, len);
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kfree(buf);
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return 0;
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}
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static int rts51x_check_status(struct us_data *us, u8 lun)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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int retval;
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u8 buf[16];
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retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
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if (retval != STATUS_SUCCESS)
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return -EIO;
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usb_stor_dbg(us, "chip->status_len = %d\n", chip->status_len);
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chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
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chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
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chip->status[lun].cur_lun = buf[4];
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chip->status[lun].card_type = buf[5];
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chip->status[lun].total_lun = buf[6];
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chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
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chip->status[lun].phy_exist = buf[9];
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chip->status[lun].multi_flag = buf[10];
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chip->status[lun].multi_card = buf[11];
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chip->status[lun].log_exist = buf[12];
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if (chip->status_len == 16) {
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chip->status[lun].detailed_type.detailed_type1 = buf[13];
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chip->status[lun].function[0] = buf[14];
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chip->status[lun].function[1] = buf[15];
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}
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return 0;
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}
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static int enable_oscillator(struct us_data *us)
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{
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int retval;
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u8 value;
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retval = rts51x_read_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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return -EIO;
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value |= 0x04;
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retval = rts51x_write_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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return -EIO;
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retval = rts51x_read_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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return -EIO;
|
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if (!(value & 0x04))
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return -EIO;
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return 0;
|
}
|
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static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
|
{
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int retval;
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u8 cmnd[12] = {0};
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u8 *buf;
|
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usb_stor_dbg(us, "addr = 0xfe47, len = %d\n", len);
|
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buf = kmemdup(data, len, GFP_NOIO);
|
if (!buf)
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return USB_STOR_TRANSPORT_ERROR;
|
|
cmnd[0] = 0xF0;
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cmnd[1] = 0x0E;
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cmnd[2] = 0xfe;
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cmnd[3] = 0x47;
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cmnd[4] = (u8)(len >> 8);
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cmnd[5] = (u8)len;
|
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retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL);
|
kfree(buf);
|
if (retval != USB_STOR_TRANSPORT_GOOD) {
|
return -EIO;
|
}
|
|
return 0;
|
}
|
|
static int do_config_autodelink(struct us_data *us, int enable, int force)
|
{
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int retval;
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u8 value;
|
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retval = rts51x_read_mem(us, 0xFE47, &value, 1);
|
if (retval < 0)
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return -EIO;
|
|
if (enable) {
|
if (force)
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value |= 0x03;
|
else
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value |= 0x01;
|
} else {
|
value &= ~0x03;
|
}
|
|
usb_stor_dbg(us, "set 0xfe47 to 0x%x\n", value);
|
|
/* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
|
retval = __do_config_autodelink(us, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
return 0;
|
}
|
|
static int config_autodelink_after_power_on(struct us_data *us)
|
{
|
struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
|
int retval;
|
u8 value;
|
|
if (!CHK_AUTO_DELINK(chip))
|
return 0;
|
|
retval = rts51x_read_mem(us, 0xFE47, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
if (auto_delink_en) {
|
CLR_BIT(value, 0);
|
CLR_BIT(value, 1);
|
SET_BIT(value, 2);
|
|
if (CHECK_ID(chip, 0x0138, 0x3882))
|
CLR_BIT(value, 2);
|
|
SET_BIT(value, 7);
|
|
/* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
|
retval = __do_config_autodelink(us, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
retval = enable_oscillator(us);
|
if (retval == 0)
|
(void)do_config_autodelink(us, 1, 0);
|
} else {
|
/* Autodelink controlled by firmware */
|
|
SET_BIT(value, 2);
|
|
if (CHECK_ID(chip, 0x0138, 0x3882))
|
CLR_BIT(value, 2);
|
|
if (CHECK_ID(chip, 0x0159, 0x5889) ||
|
CHECK_ID(chip, 0x0138, 0x3880)) {
|
CLR_BIT(value, 0);
|
CLR_BIT(value, 7);
|
}
|
|
/* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
|
retval = __do_config_autodelink(us, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
if (CHECK_ID(chip, 0x0159, 0x5888)) {
|
value = 0xFF;
|
retval = rts51x_write_mem(us, 0xFE79, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
value = 0x01;
|
retval = rts51x_write_mem(us, 0x48, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
}
|
}
|
|
return 0;
|
}
|
|
#ifdef CONFIG_PM
|
static int config_autodelink_before_power_down(struct us_data *us)
|
{
|
struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
|
int retval;
|
u8 value;
|
|
if (!CHK_AUTO_DELINK(chip))
|
return 0;
|
|
if (auto_delink_en) {
|
retval = rts51x_read_mem(us, 0xFE77, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
SET_BIT(value, 2);
|
retval = rts51x_write_mem(us, 0xFE77, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
if (CHECK_ID(chip, 0x0159, 0x5888)) {
|
value = 0x01;
|
retval = rts51x_write_mem(us, 0x48, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
}
|
|
retval = rts51x_read_mem(us, 0xFE47, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
SET_BIT(value, 0);
|
if (CHECK_ID(chip, 0x0138, 0x3882))
|
SET_BIT(value, 2);
|
retval = rts51x_write_mem(us, 0xFE77, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
} else {
|
if (CHECK_ID(chip, 0x0159, 0x5889) ||
|
CHECK_ID(chip, 0x0138, 0x3880) ||
|
CHECK_ID(chip, 0x0138, 0x3882)) {
|
retval = rts51x_read_mem(us, 0xFE47, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
|
if (CHECK_ID(chip, 0x0159, 0x5889) ||
|
CHECK_ID(chip, 0x0138, 0x3880)) {
|
SET_BIT(value, 0);
|
SET_BIT(value, 7);
|
}
|
|
if (CHECK_ID(chip, 0x0138, 0x3882))
|
SET_BIT(value, 2);
|
|
/* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
|
retval = __do_config_autodelink(us, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
}
|
|
if (CHECK_ID(chip, 0x0159, 0x5888)) {
|
value = 0x01;
|
retval = rts51x_write_mem(us, 0x48, &value, 1);
|
if (retval < 0)
|
return -EIO;
|
}
|
}
|
|
return 0;
|
}
|
|
static void fw5895_init(struct us_data *us)
|
{
|
struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
|
int retval;
|
u8 val;
|
|
if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
|
usb_stor_dbg(us, "Not the specified device, return immediately!\n");
|
} else {
|
retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
|
if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
|
val = 0x1F;
|
retval = rts51x_write_mem(us, 0xFD70, &val, 1);
|
if (retval != STATUS_SUCCESS)
|
usb_stor_dbg(us, "Write memory fail\n");
|
} else {
|
usb_stor_dbg(us, "Read memory fail, OR (val & 0x1F) != 0\n");
|
}
|
}
|
}
|
#endif
|
|
#ifdef CONFIG_REALTEK_AUTOPM
|
static void fw5895_set_mmc_wp(struct us_data *us)
|
{
|
struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
|
int retval;
|
u8 buf[13];
|
|
if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
|
usb_stor_dbg(us, "Not the specified device, return immediately!\n");
|
} else {
|
retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
|
if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
|
/* SD Exist and SD WP */
|
retval = rts51x_read_mem(us, 0xD04E, buf, 1);
|
if (retval == STATUS_SUCCESS) {
|
buf[0] |= 0x04;
|
retval = rts51x_write_mem(us, 0xFD70, buf, 1);
|
if (retval != STATUS_SUCCESS)
|
usb_stor_dbg(us, "Write memory fail\n");
|
} else {
|
usb_stor_dbg(us, "Read memory fail\n");
|
}
|
} else {
|
usb_stor_dbg(us, "Read memory fail, OR (buf[0]&0x24)!=0x24\n");
|
}
|
}
|
}
|
|
static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
|
{
|
struct us_data *us = chip->us;
|
|
usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
|
|
chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
|
mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
|
}
|
|
static void rts51x_suspend_timer_fn(struct timer_list *t)
|
{
|
struct rts51x_chip *chip = from_timer(chip, t, rts51x_suspend_timer);
|
struct us_data *us = chip->us;
|
|
switch (rts51x_get_stat(chip)) {
|
case RTS51X_STAT_INIT:
|
case RTS51X_STAT_RUN:
|
rts51x_modi_suspend_timer(chip);
|
break;
|
case RTS51X_STAT_IDLE:
|
case RTS51X_STAT_SS:
|
usb_stor_dbg(us, "RTS51X_STAT_SS, power.usage:%d\n",
|
atomic_read(&us->pusb_intf->dev.power.usage_count));
|
|
if (atomic_read(&us->pusb_intf->dev.power.usage_count) > 0) {
|
usb_stor_dbg(us, "Ready to enter SS state\n");
|
rts51x_set_stat(chip, RTS51X_STAT_SS);
|
/* ignore mass storage interface's children */
|
pm_suspend_ignore_children(&us->pusb_intf->dev, true);
|
usb_autopm_put_interface_async(us->pusb_intf);
|
usb_stor_dbg(us, "RTS51X_STAT_SS 01, power.usage:%d\n",
|
atomic_read(&us->pusb_intf->dev.power.usage_count));
|
}
|
break;
|
default:
|
usb_stor_dbg(us, "Unknown state !!!\n");
|
break;
|
}
|
}
|
|
static inline int working_scsi(struct scsi_cmnd *srb)
|
{
|
if ((srb->cmnd[0] == TEST_UNIT_READY) ||
|
(srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
|
return 0;
|
}
|
|
return 1;
|
}
|
|
static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
|
{
|
struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
|
static int card_first_show = 1;
|
static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
|
10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
|
};
|
static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
|
10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
|
};
|
int ret;
|
|
if (working_scsi(srb)) {
|
usb_stor_dbg(us, "working scsi, power.usage:%d\n",
|
atomic_read(&us->pusb_intf->dev.power.usage_count));
|
|
if (atomic_read(&us->pusb_intf->dev.power.usage_count) <= 0) {
|
ret = usb_autopm_get_interface(us->pusb_intf);
|
usb_stor_dbg(us, "working scsi, ret=%d\n", ret);
|
}
|
if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
|
rts51x_set_stat(chip, RTS51X_STAT_RUN);
|
chip->proto_handler_backup(srb, us);
|
} else {
|
if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
|
usb_stor_dbg(us, "NOT working scsi\n");
|
if ((srb->cmnd[0] == TEST_UNIT_READY) &&
|
(chip->pwr_state == US_SUSPEND)) {
|
if (TST_LUN_READY(chip, srb->device->lun)) {
|
srb->result = SAM_STAT_GOOD;
|
} else {
|
srb->result = SAM_STAT_CHECK_CONDITION;
|
memcpy(srb->sense_buffer,
|
media_not_present,
|
US_SENSE_SIZE);
|
}
|
usb_stor_dbg(us, "TEST_UNIT_READY\n");
|
goto out;
|
}
|
if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
|
int prevent = srb->cmnd[4] & 0x1;
|
if (prevent) {
|
srb->result = SAM_STAT_CHECK_CONDITION;
|
memcpy(srb->sense_buffer,
|
invalid_cmd_field,
|
US_SENSE_SIZE);
|
} else {
|
srb->result = SAM_STAT_GOOD;
|
}
|
usb_stor_dbg(us, "ALLOW_MEDIUM_REMOVAL\n");
|
goto out;
|
}
|
} else {
|
usb_stor_dbg(us, "NOT working scsi, not SS\n");
|
chip->proto_handler_backup(srb, us);
|
/* Check whether card is plugged in */
|
if (srb->cmnd[0] == TEST_UNIT_READY) {
|
if (srb->result == SAM_STAT_GOOD) {
|
SET_LUN_READY(chip, srb->device->lun);
|
if (card_first_show) {
|
card_first_show = 0;
|
fw5895_set_mmc_wp(us);
|
}
|
} else {
|
CLR_LUN_READY(chip, srb->device->lun);
|
card_first_show = 1;
|
}
|
}
|
if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
|
rts51x_set_stat(chip, RTS51X_STAT_IDLE);
|
}
|
}
|
out:
|
usb_stor_dbg(us, "state:%d\n", rts51x_get_stat(chip));
|
if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
|
rts51x_modi_suspend_timer(chip);
|
}
|
|
static int realtek_cr_autosuspend_setup(struct us_data *us)
|
{
|
struct rts51x_chip *chip;
|
struct rts51x_status *status = NULL;
|
u8 buf[16];
|
int retval;
|
|
chip = (struct rts51x_chip *)us->extra;
|
chip->support_auto_delink = 0;
|
chip->pwr_state = US_RESUME;
|
chip->lun_ready = 0;
|
rts51x_set_stat(chip, RTS51X_STAT_INIT);
|
|
retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
|
if (retval != STATUS_SUCCESS) {
|
usb_stor_dbg(us, "Read status fail\n");
|
return -EIO;
|
}
|
status = chip->status;
|
status->vid = ((u16) buf[0] << 8) | buf[1];
|
status->pid = ((u16) buf[2] << 8) | buf[3];
|
status->cur_lun = buf[4];
|
status->card_type = buf[5];
|
status->total_lun = buf[6];
|
status->fw_ver = ((u16) buf[7] << 8) | buf[8];
|
status->phy_exist = buf[9];
|
status->multi_flag = buf[10];
|
status->multi_card = buf[11];
|
status->log_exist = buf[12];
|
if (chip->status_len == 16) {
|
status->detailed_type.detailed_type1 = buf[13];
|
status->function[0] = buf[14];
|
status->function[1] = buf[15];
|
}
|
|
/* back up the proto_handler in us->extra */
|
chip = (struct rts51x_chip *)(us->extra);
|
chip->proto_handler_backup = us->proto_handler;
|
/* Set the autosuspend_delay to 0 */
|
pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
|
/* override us->proto_handler setted in get_protocol() */
|
us->proto_handler = rts51x_invoke_transport;
|
|
chip->timer_expires = 0;
|
timer_setup(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn, 0);
|
fw5895_init(us);
|
|
/* enable autosuspend function of the usb device */
|
usb_enable_autosuspend(us->pusb_dev);
|
|
return 0;
|
}
|
#endif
|
|
static void realtek_cr_destructor(void *extra)
|
{
|
struct rts51x_chip *chip = extra;
|
|
if (!chip)
|
return;
|
|
#ifdef CONFIG_REALTEK_AUTOPM
|
if (ss_en) {
|
del_timer(&chip->rts51x_suspend_timer);
|
chip->timer_expires = 0;
|
}
|
#endif
|
kfree(chip->status);
|
}
|
|
#ifdef CONFIG_PM
|
static int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
|
{
|
struct us_data *us = usb_get_intfdata(iface);
|
|
/* wait until no command is running */
|
mutex_lock(&us->dev_mutex);
|
|
config_autodelink_before_power_down(us);
|
|
mutex_unlock(&us->dev_mutex);
|
|
return 0;
|
}
|
|
static int realtek_cr_resume(struct usb_interface *iface)
|
{
|
struct us_data *us = usb_get_intfdata(iface);
|
|
fw5895_init(us);
|
config_autodelink_after_power_on(us);
|
|
return 0;
|
}
|
#else
|
#define realtek_cr_suspend NULL
|
#define realtek_cr_resume NULL
|
#endif
|
|
static int init_realtek_cr(struct us_data *us)
|
{
|
struct rts51x_chip *chip;
|
int size, i, retval;
|
|
chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
|
if (!chip)
|
return -ENOMEM;
|
|
us->extra = chip;
|
us->extra_destructor = realtek_cr_destructor;
|
us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
|
chip->us = us;
|
|
usb_stor_dbg(us, "chip->max_lun = %d\n", chip->max_lun);
|
|
size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
|
chip->status = kzalloc(size, GFP_KERNEL);
|
if (!chip->status)
|
goto INIT_FAIL;
|
|
for (i = 0; i <= (int)(chip->max_lun); i++) {
|
retval = rts51x_check_status(us, (u8) i);
|
if (retval < 0)
|
goto INIT_FAIL;
|
}
|
|
if (CHECK_PID(chip, 0x0138) || CHECK_PID(chip, 0x0158) ||
|
CHECK_PID(chip, 0x0159)) {
|
if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
|
CHECK_FW_VER(chip, 0x5901))
|
SET_AUTO_DELINK(chip);
|
if (STATUS_LEN(chip) == 16) {
|
if (SUPPORT_AUTO_DELINK(chip))
|
SET_AUTO_DELINK(chip);
|
}
|
}
|
#ifdef CONFIG_REALTEK_AUTOPM
|
if (ss_en)
|
realtek_cr_autosuspend_setup(us);
|
#endif
|
|
usb_stor_dbg(us, "chip->flag = 0x%x\n", chip->flag);
|
|
(void)config_autodelink_after_power_on(us);
|
|
return 0;
|
|
INIT_FAIL:
|
if (us->extra) {
|
kfree(chip->status);
|
kfree(us->extra);
|
us->extra = NULL;
|
}
|
|
return -EIO;
|
}
|
|
static struct scsi_host_template realtek_cr_host_template;
|
|
static int realtek_cr_probe(struct usb_interface *intf,
|
const struct usb_device_id *id)
|
{
|
struct us_data *us;
|
int result;
|
|
dev_dbg(&intf->dev, "Probe Realtek Card Reader!\n");
|
|
result = usb_stor_probe1(&us, intf, id,
|
(id - realtek_cr_ids) +
|
realtek_cr_unusual_dev_list,
|
&realtek_cr_host_template);
|
if (result)
|
return result;
|
|
result = usb_stor_probe2(us);
|
|
return result;
|
}
|
|
static struct usb_driver realtek_cr_driver = {
|
.name = DRV_NAME,
|
.probe = realtek_cr_probe,
|
.disconnect = usb_stor_disconnect,
|
/* .suspend = usb_stor_suspend, */
|
/* .resume = usb_stor_resume, */
|
.reset_resume = usb_stor_reset_resume,
|
.suspend = realtek_cr_suspend,
|
.resume = realtek_cr_resume,
|
.pre_reset = usb_stor_pre_reset,
|
.post_reset = usb_stor_post_reset,
|
.id_table = realtek_cr_ids,
|
.soft_unbind = 1,
|
.supports_autosuspend = 1,
|
.no_dynamic_id = 1,
|
};
|
|
module_usb_stor_driver(realtek_cr_driver, realtek_cr_host_template, DRV_NAME);
|
