Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0+
/*
 * Driver for Realtek RTS51xx USB card reader
 *
 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
 *
 * Author:
 *   wwang (wei_wang@realsil.com.cn)
 *   No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
 */
 
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/kernel.h>
 
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <linux/cdrom.h>
 
#include <linux/usb.h>
#include <linux/slab.h>
#include <linux/usb_usual.h>
 
#include "usb.h"
#include "transport.h"
#include "protocol.h"
#include "debug.h"
#include "scsiglue.h"
 
#define DRV_NAME "ums-realtek"
 
MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS(USB_STORAGE);
 
static int auto_delink_en = 1;
module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(auto_delink_en, "auto delink mode (0=firmware, 1=software [default])");
 
#ifdef CONFIG_REALTEK_AUTOPM
static int ss_en = 1;
module_param(ss_en, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ss_en, "enable selective suspend");
 
static int ss_delay = 50;
module_param(ss_delay, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ss_delay,
<------><------> "seconds to delay before entering selective suspend");
 
enum RTS51X_STAT {
<------>RTS51X_STAT_INIT,
<------>RTS51X_STAT_IDLE,
<------>RTS51X_STAT_RUN,
<------>RTS51X_STAT_SS
};
 
#define POLLING_INTERVAL	50
 
#define rts51x_set_stat(chip, stat)	\
<------>((chip)->state = (enum RTS51X_STAT)(stat))
#define rts51x_get_stat(chip)		((chip)->state)
 
#define SET_LUN_READY(chip, lun)	((chip)->lun_ready |= ((u8)1 << (lun)))
#define CLR_LUN_READY(chip, lun)	((chip)->lun_ready &= ~((u8)1 << (lun)))
#define TST_LUN_READY(chip, lun)	((chip)->lun_ready & ((u8)1 << (lun)))
 
#endif
 
struct rts51x_status {
<------>u16 vid;
<------>u16 pid;
<------>u8 cur_lun;
<------>u8 card_type;
<------>u8 total_lun;
<------>u16 fw_ver;
<------>u8 phy_exist;
<------>u8 multi_flag;
<------>u8 multi_card;
<------>u8 log_exist;
<------>union {
<------><------>u8 detailed_type1;
<------><------>u8 detailed_type2;
<------>} detailed_type;
<------>u8 function[2];
};
 
struct rts51x_chip {
<------>u16 vendor_id;
<------>u16 product_id;
<------>char max_lun;
 
<------>struct rts51x_status *status;
<------>int status_len;
 
<------>u32 flag;
<------>struct us_data *us;
 
#ifdef CONFIG_REALTEK_AUTOPM
<------>struct timer_list rts51x_suspend_timer;
<------>unsigned long timer_expires;
<------>int pwr_state;
<------>u8 lun_ready;
<------>enum RTS51X_STAT state;
<------>int support_auto_delink;
#endif
<------>/* used to back up the protocol chosen in probe1 phase */
<------>proto_cmnd proto_handler_backup;
};
 
/* flag definition */
#define FLIDX_AUTO_DELINK		0x01
 
#define SCSI_LUN(srb)			((srb)->device->lun)
 
/* Bit Operation */
#define SET_BIT(data, idx)		((data) |= 1 << (idx))
#define CLR_BIT(data, idx)		((data) &= ~(1 << (idx)))
#define CHK_BIT(data, idx)		((data) & (1 << (idx)))
 
#define SET_AUTO_DELINK(chip)		((chip)->flag |= FLIDX_AUTO_DELINK)
#define CLR_AUTO_DELINK(chip)		((chip)->flag &= ~FLIDX_AUTO_DELINK)
#define CHK_AUTO_DELINK(chip)		((chip)->flag & FLIDX_AUTO_DELINK)
 
#define RTS51X_GET_VID(chip)		((chip)->vendor_id)
#define RTS51X_GET_PID(chip)		((chip)->product_id)
 
#define VENDOR_ID(chip)			((chip)->status[0].vid)
#define PRODUCT_ID(chip)		((chip)->status[0].pid)
#define FW_VERSION(chip)		((chip)->status[0].fw_ver)
#define STATUS_LEN(chip)		((chip)->status_len)
 
#define STATUS_SUCCESS		0
#define STATUS_FAIL		1
 
/* Check card reader function */
#define SUPPORT_DETAILED_TYPE1(chip)	\
<------><------>CHK_BIT((chip)->status[0].function[0], 1)
#define SUPPORT_OT(chip)		\
<------><------>CHK_BIT((chip)->status[0].function[0], 2)
#define SUPPORT_OC(chip)		\
<------><------>CHK_BIT((chip)->status[0].function[0], 3)
#define SUPPORT_AUTO_DELINK(chip)	\
<------><------>CHK_BIT((chip)->status[0].function[0], 4)
#define SUPPORT_SDIO(chip)		\
<------><------>CHK_BIT((chip)->status[0].function[1], 0)
#define SUPPORT_DETAILED_TYPE2(chip)	\
<------><------>CHK_BIT((chip)->status[0].function[1], 1)
 
#define CHECK_PID(chip, pid)		(RTS51X_GET_PID(chip) == (pid))
#define CHECK_FW_VER(chip, fw_ver)	(FW_VERSION(chip) == (fw_ver))
#define CHECK_ID(chip, pid, fw_ver)	\
<------><------>(CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
 
static int init_realtek_cr(struct us_data *us);
 
/*
 * The table of devices
 */
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
<------><------>    vendorName, productName, useProtocol, useTransport, \
<------><------>    initFunction, flags) \
{\
<------>USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
<------>.driver_info = (flags) \
}
 
static const struct usb_device_id realtek_cr_ids[] = {
#	include "unusual_realtek.h"
<------>{}			/* Terminating entry */
};
 
MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
 
#undef UNUSUAL_DEV
 
/*
 * The flags table
 */
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
<------><------>    vendor_name, product_name, use_protocol, use_transport, \
<------><------>    init_function, Flags) \
{ \
<------>.vendorName = vendor_name,	\
<------>.productName = product_name,	\
<------>.useProtocol = use_protocol,	\
<------>.useTransport = use_transport,	\
<------>.initFunction = init_function,	\
}
 
static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
#	include "unusual_realtek.h"
<------>{}			/* Terminating entry */
};
 
#undef UNUSUAL_DEV
 
static int rts51x_bulk_transport(struct us_data *us, u8 lun,
<------><------><------><------> u8 *cmd, int cmd_len, u8 *buf, int buf_len,
<------><------><------><------> enum dma_data_direction dir, int *act_len)
{
<------>struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
<------>struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
<------>int result;
<------>unsigned int residue;
<------>unsigned int cswlen;
<------>unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
 
<------>/* set up the command wrapper */
<------>bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
<------>bcb->DataTransferLength = cpu_to_le32(buf_len);
<------>bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
<------>bcb->Tag = ++us->tag;
<------>bcb->Lun = lun;
<------>bcb->Length = cmd_len;
 
<------>/* copy the command payload */
<------>memset(bcb->CDB, 0, sizeof(bcb->CDB));
<------>memcpy(bcb->CDB, cmd, bcb->Length);
 
<------>/* send it to out endpoint */
<------>result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
<------><------><------><------><------>    bcb, cbwlen, NULL);
<------>if (result != USB_STOR_XFER_GOOD)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>/* DATA STAGE */
<------>/* send/receive data payload, if there is any */
 
<------>if (buf && buf_len) {
<------><------>unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
<------><------>    us->recv_bulk_pipe : us->send_bulk_pipe;
<------><------>result = usb_stor_bulk_transfer_buf(us, pipe,
<------><------><------><------><------><------>    buf, buf_len, NULL);
<------><------>if (result == USB_STOR_XFER_ERROR)
<------><------><------>return USB_STOR_TRANSPORT_ERROR;
<------>}
 
<------>/* get CSW for device status */
<------>result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
<------><------><------><------><------>    bcs, US_BULK_CS_WRAP_LEN, &cswlen);
<------>if (result != USB_STOR_XFER_GOOD)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>/* check bulk status */
<------>if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
<------><------>usb_stor_dbg(us, "Signature mismatch: got %08X, expecting %08X\n",
<------><------><------>     le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
<------><------>return USB_STOR_TRANSPORT_ERROR;
<------>}
 
<------>residue = bcs->Residue;
<------>if (bcs->Tag != us->tag)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>/*
<------> * try to compute the actual residue, based on how much data
<------> * was really transferred and what the device tells us
<------> */
<------>if (residue)
<------><------>residue = residue < buf_len ? residue : buf_len;
 
<------>if (act_len)
<------><------>*act_len = buf_len - residue;
 
<------>/* based on the status code, we report good or bad */
<------>switch (bcs->Status) {
<------>case US_BULK_STAT_OK:
<------><------>/* command good -- note that data could be short */
<------><------>return USB_STOR_TRANSPORT_GOOD;
 
<------>case US_BULK_STAT_FAIL:
<------><------>/* command failed */
<------><------>return USB_STOR_TRANSPORT_FAILED;
 
<------>case US_BULK_STAT_PHASE:
<------><------>/*
<------><------> * phase error -- note that a transport reset will be
<------><------> * invoked by the invoke_transport() function
<------><------> */
<------><------>return USB_STOR_TRANSPORT_ERROR;
<------>}
 
<------>/* we should never get here, but if we do, we're in trouble */
<------>return USB_STOR_TRANSPORT_ERROR;
}
 
static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
<------><------><------><------> u8 *cmd, int cmd_len, u8 *buf, int buf_len,
<------><------><------><------> enum dma_data_direction dir, int *act_len)
{
<------>struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
<------>struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
<------>int result;
<------>unsigned int cswlen;
<------>unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
 
<------>/* set up the command wrapper */
<------>bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
<------>bcb->DataTransferLength = cpu_to_le32(buf_len);
<------>bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
<------>bcb->Tag = ++us->tag;
<------>bcb->Lun = lun;
<------>bcb->Length = cmd_len;
 
<------>/* copy the command payload */
<------>memset(bcb->CDB, 0, sizeof(bcb->CDB));
<------>memcpy(bcb->CDB, cmd, bcb->Length);
 
<------>/* send it to out endpoint */
<------>result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
<------><------><------><------>bcb, cbwlen, NULL);
<------>if (result != USB_STOR_XFER_GOOD)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>/* DATA STAGE */
<------>/* send/receive data payload, if there is any */
 
<------>if (buf && buf_len) {
<------><------>unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
<------><------><------><------>us->recv_bulk_pipe : us->send_bulk_pipe;
<------><------>result = usb_stor_bulk_transfer_buf(us, pipe,
<------><------><------><------>buf, buf_len, NULL);
<------><------>if (result == USB_STOR_XFER_ERROR)
<------><------><------>return USB_STOR_TRANSPORT_ERROR;
<------>}
 
<------>/* get CSW for device status */
<------>result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs,
<------><------><------>US_BULK_CS_WRAP_LEN, &cswlen, 250);
<------>return result;
}
 
/* Determine what the maximum LUN supported is */
static int rts51x_get_max_lun(struct us_data *us)
{
<------>int result;
 
<------>/* issue the command */
<------>us->iobuf[0] = 0;
<------>result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
<------><------><------><------>      US_BULK_GET_MAX_LUN,
<------><------><------><------>      USB_DIR_IN | USB_TYPE_CLASS |
<------><------><------><------>      USB_RECIP_INTERFACE,
<------><------><------><------>      0, us->ifnum, us->iobuf, 1, 10 * HZ);
 
<------>usb_stor_dbg(us, "GetMaxLUN command result is %d, data is %d\n",
<------><------>     result, us->iobuf[0]);
 
<------>/* if we have a successful request, return the result */
<------>if (result > 0)
<------><------>return us->iobuf[0];
 
<------>return 0;
}
 
static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
{
<------>int retval;
<------>u8 cmnd[12] = { 0 };
<------>u8 *buf;
 
<------>buf = kmalloc(len, GFP_NOIO);
<------>if (buf == NULL)
<------><------>return -ENOMEM;
 
<------>usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
 
<------>cmnd[0] = 0xF0;
<------>cmnd[1] = 0x0D;
<------>cmnd[2] = (u8) (addr >> 8);
<------>cmnd[3] = (u8) addr;
<------>cmnd[4] = (u8) (len >> 8);
<------>cmnd[5] = (u8) len;
 
<------>retval = rts51x_bulk_transport(us, 0, cmnd, 12,
<------><------><------><------>       buf, len, DMA_FROM_DEVICE, NULL);
<------>if (retval != USB_STOR_TRANSPORT_GOOD) {
<------><------>kfree(buf);
<------><------>return -EIO;
<------>}
 
<------>memcpy(data, buf, len);
<------>kfree(buf);
<------>return 0;
}
 
static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
{
<------>int retval;
<------>u8 cmnd[12] = { 0 };
<------>u8 *buf;
 
<------>buf = kmemdup(data, len, GFP_NOIO);
<------>if (buf == NULL)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>usb_stor_dbg(us, "addr = 0x%x, len = %d\n", addr, len);
 
<------>cmnd[0] = 0xF0;
<------>cmnd[1] = 0x0E;
<------>cmnd[2] = (u8) (addr >> 8);
<------>cmnd[3] = (u8) addr;
<------>cmnd[4] = (u8) (len >> 8);
<------>cmnd[5] = (u8) len;
 
<------>retval = rts51x_bulk_transport(us, 0, cmnd, 12,
<------><------><------><------>       buf, len, DMA_TO_DEVICE, NULL);
<------>kfree(buf);
<------>if (retval != USB_STOR_TRANSPORT_GOOD)
<------><------>return -EIO;
 
<------>return 0;
}
 
static int rts51x_read_status(struct us_data *us,
<------><------><------>      u8 lun, u8 *status, int len, int *actlen)
{
<------>int retval;
<------>u8 cmnd[12] = { 0 };
<------>u8 *buf;
 
<------>buf = kmalloc(len, GFP_NOIO);
<------>if (buf == NULL)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>usb_stor_dbg(us, "lun = %d\n", lun);
 
<------>cmnd[0] = 0xF0;
<------>cmnd[1] = 0x09;
 
<------>retval = rts51x_bulk_transport(us, lun, cmnd, 12,
<------><------><------><------>       buf, len, DMA_FROM_DEVICE, actlen);
<------>if (retval != USB_STOR_TRANSPORT_GOOD) {
<------><------>kfree(buf);
<------><------>return -EIO;
<------>}
 
<------>memcpy(status, buf, len);
<------>kfree(buf);
<------>return 0;
}
 
static int rts51x_check_status(struct us_data *us, u8 lun)
{
<------>struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
<------>int retval;
<------>u8 buf[16];
 
<------>retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
<------>if (retval != STATUS_SUCCESS)
<------><------>return -EIO;
 
<------>usb_stor_dbg(us, "chip->status_len = %d\n", chip->status_len);
 
<------>chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
<------>chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
<------>chip->status[lun].cur_lun = buf[4];
<------>chip->status[lun].card_type = buf[5];
<------>chip->status[lun].total_lun = buf[6];
<------>chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
<------>chip->status[lun].phy_exist = buf[9];
<------>chip->status[lun].multi_flag = buf[10];
<------>chip->status[lun].multi_card = buf[11];
<------>chip->status[lun].log_exist = buf[12];
<------>if (chip->status_len == 16) {
<------><------>chip->status[lun].detailed_type.detailed_type1 = buf[13];
<------><------>chip->status[lun].function[0] = buf[14];
<------><------>chip->status[lun].function[1] = buf[15];
<------>}
 
<------>return 0;
}
 
static int enable_oscillator(struct us_data *us)
{
<------>int retval;
<------>u8 value;
 
<------>retval = rts51x_read_mem(us, 0xFE77, &value, 1);
<------>if (retval < 0)
<------><------>return -EIO;
 
<------>value |= 0x04;
<------>retval = rts51x_write_mem(us, 0xFE77, &value, 1);
<------>if (retval < 0)
<------><------>return -EIO;
 
<------>retval = rts51x_read_mem(us, 0xFE77, &value, 1);
<------>if (retval < 0)
<------><------>return -EIO;
 
<------>if (!(value & 0x04))
<------><------>return -EIO;
 
<------>return 0;
}
 
static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
{
<------>int retval;
<------>u8 cmnd[12] = {0};
<------>u8 *buf;
 
<------>usb_stor_dbg(us, "addr = 0xfe47, len = %d\n", len);
 
<------>buf = kmemdup(data, len, GFP_NOIO);
<------>if (!buf)
<------><------>return USB_STOR_TRANSPORT_ERROR;
 
<------>cmnd[0] = 0xF0;
<------>cmnd[1] = 0x0E;
<------>cmnd[2] = 0xfe;
<------>cmnd[3] = 0x47;
<------>cmnd[4] = (u8)(len >> 8);
<------>cmnd[5] = (u8)len;
 
<------>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)
{
<------>int retval;
<------>u8 value;
 
<------>retval = rts51x_read_mem(us, 0xFE47, &value, 1);
<------>if (retval < 0)
<------><------>return -EIO;
 
<------>if (enable) {
<------><------>if (force)
<------><------><------>value |= 0x03;
<------><------>else
<------><------><------>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);