// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for Realtek RTS51xx USB card reader
*
* Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
*
* Author:
* wwang ([email protected])
* 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 <[email protected]>");
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);
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