rts51x_chip.c

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/* Driver for Realtek RTS51xx USB card reader
 *
 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Author:
 *   wwang ([email protected])
 *   No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
 * Maintainer:
 *   Edwin Rong ([email protected])
 *   No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
 */

#include <linux/blkdev.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/workqueue.h>

#include "debug.h"
#include "trace.h"
#include "rts51x.h"
#include "rts51x_chip.h"
#include "rts51x_card.h"
#include "rts51x_transport.h"
#include "xd.h"
#include "ms.h"
#include "sd.h"

static int check_sd_speed_prior(u32 sd_speed_prior)
{
    int i, fake_para = 0;

    /* Check the legality of sd_speed_prior */
    for (i = 0; i < 4; i++) {
        u8 tmp = (u8) (sd_speed_prior >> (i * 8));
        if ((tmp < 0x01) || (tmp > 0x04)) {
            fake_para = 1;
            break;
        }
    }

    return !fake_para;
}

int rts51x_reset_chip(struct rts51x_chip *chip)
{
    int retval;

    if (CHECK_PKG(chip, LQFP48)) {
        RTS51X_WRITE_REG(chip, CARD_PWR_CTL, LDO3318_PWR_MASK,
                 LDO_SUSPEND);
        RTS51X_WRITE_REG(chip, CARD_PWR_CTL, FORCE_LDO_POWERB,
                 FORCE_LDO_POWERB);
        RTS51X_WRITE_REG(chip, CARD_PULL_CTL1, 0x30, 0x10);
        RTS51X_WRITE_REG(chip, CARD_PULL_CTL5, 0x03, 0x01);
        RTS51X_WRITE_REG(chip, CARD_PULL_CTL6, 0x0C, 0x04);
    }
    if (chip->asic_code) {
        RTS51X_WRITE_REG(chip, SYS_DUMMY0, NYET_MSAK, NYET_EN);
        RTS51X_WRITE_REG(chip, CD_DEGLITCH_WIDTH, 0xFF, 0x08);
        rts51x_write_register(chip, CD_DEGLITCH_EN, XD_CD_DEGLITCH_EN,
                      0x00);
        rts51x_write_register(chip, SD30_DRIVE_SEL, SD30_DRIVE_MASK,
                      chip->option.sd30_pad_drive);
        rts51x_write_register(chip, CARD_DRIVE_SEL, SD20_DRIVE_MASK,
                      chip->option.sd20_pad_drive);
        if (chip->rts5179)
            rts51x_write_register(chip, CARD_PULL_CTL5, 0x03, 0x01);
        if (CHECK_PKG(chip, LQFP48)) {
            rts51x_write_register(chip, CARD_PULL_CTL3,
                          0x80, 0x80);
            rts51x_write_register(chip, CARD_PULL_CTL6,
                          0xf0, 0xA0);
        } else {
            rts51x_write_register(chip, CARD_PULL_CTL1,
                          0x30, 0x20);
            rts51x_write_register(chip, CARD_PULL_CTL3,
                          0x80, 0x80);
            rts51x_write_register(chip, CARD_PULL_CTL6,
                          0x0c, 0x08);
        }
    }
    if (chip->option.sd_ctl & SUPPORT_UHS50_MMC44) {
        SET_UHS50(chip);
        RTS51X_DEBUGP("option enable UHS50&MMC44,sd_ctl:0x%x\n",
            chip->option.sd_ctl);
    } else {
        /* if(CHECK_PID(chip, 0x0139)&&CHECK_PKG(chip, LQFP48)) */
        if ((CHECK_PID(chip, 0x0139) && CHECK_PKG(chip, LQFP48))
            || chip->rts5179) {
            SET_UHS50(chip);
            RTS51X_DEBUGP("PID enable UHS50&MMC44\n");
        } else {
            CLEAR_UHS50(chip);
            RTS51X_DEBUGP("PID disable UHS50&MMC44\n");
        }
    }

    if (chip->option.ms_errreg_fix && (chip->ic_version > 1))
        rts51x_write_register(chip, 0xFD4D, 0x01, 0x01);
    retval = rts51x_write_phy_register(chip, 0xC2, 0x7C);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    rts51x_init_cmd(chip);

    /* GPIO OE */
    rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_GPIO, GPIO_OE, GPIO_OE);
    rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_DMA1_CTL,
               EXTEND_DMA1_ASYNC_SIGNAL, EXTEND_DMA1_ASYNC_SIGNAL);

    retval = rts51x_send_cmd(chip, MODE_C, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);
#ifdef SUPPORT_OCP
    if (chip->asic_code) {
        rts51x_write_register(chip, OCPCTL, MS_OCP_DETECT_EN,
                      MS_OCP_DETECT_EN);
        RTS51X_DEBUGP("Enable OCP detect!\n");
    }
#endif
    if (chip->option.FT2_fast_mode) {
        card_power_on(chip, SD_CARD | MS_CARD | XD_CARD);
        wait_timeout(10);
    }

    return STATUS_SUCCESS;
}

int rts51x_init_chip(struct rts51x_chip *chip)
{
    int retval;
    u8 val;

    chip->max_lun = 0;
    chip->cur_clk = 0;
    chip->cur_card = 0;

    chip->card2lun[XD_CARD] = 0;
    chip->card2lun[SD_CARD] = 0;
    chip->card2lun[MS_CARD] = 0;
    chip->card_ejected = 0;

    chip->lun2card[0] = XD_CARD | SD_CARD | MS_CARD;
#ifdef CLOSE_SSC_POWER
    rts51x_write_register(chip, FPDCTL, SSC_POWER_MASK, SSC_POWER_ON);
    udelay(100);
    rts51x_write_register(chip, CLK_DIV, CLK_CHANGE, 0x00);
#endif
    RTS51X_SET_STAT(chip, STAT_RUN);

    RTS51X_READ_REG(chip, HW_VERSION, &val);
    RTS51X_DEBUGP("HW_VERSION: 0x%x\n", val);
    if (val & FPGA_VER) {
        chip->asic_code = 0;
        RTS51X_DEBUGP("FPGA!\n");
    } else {
        chip->asic_code = 1;
        RTS51X_DEBUGP("ASIC!\n");
    }
    chip->ic_version = val & HW_VER_MASK;

    if (!check_sd_speed_prior(chip->option.sd_speed_prior))
        chip->option.sd_speed_prior = 0x01020403;
    RTS51X_DEBUGP("sd_speed_prior = 0x%08x\n",
               chip->option.sd_speed_prior);

    RTS51X_READ_REG(chip, CARD_SHARE_MODE, &val);
    if (val & CARD_SHARE_LQFP_SEL) {
        chip->package = LQFP48;
        RTS51X_DEBUGP("Package: LQFP48\n");
    } else {
        chip->package = QFN24;
        RTS51X_DEBUGP("Package: QFN24\n");
    }

    RTS51X_READ_REG(chip, HS_USB_STAT, &val);
    if (val & USB_HI_SPEED) {
        chip->usb_speed = USB_20;
        RTS51X_DEBUGP("USB High Speed\n");
    } else {
        chip->usb_speed = USB_11;
        RTS51X_DEBUGP("USB Full Speed\n");
    }

    RTS51X_READ_REG(chip, CFG_MODE_1, &val);
    if (val & RTS5179) {
        chip->rts5179 = 1;
        RTS51X_DEBUGP("device is rts5179\n");
    } else {
        chip->rts5179 = 0;
    }

    retval = rts51x_reset_chip(chip);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, STATUS_FAIL);

    return STATUS_SUCCESS;
}

int rts51x_release_chip(struct rts51x_chip *chip)
{
    xd_free_l2p_tbl(chip);
    ms_free_l2p_tbl(chip);
    chip->card_ready = 0;
    return STATUS_SUCCESS;
}

static inline void rts51x_blink_led(struct rts51x_chip *chip)
{
    /* Read/Write */
    if (chip->card_ready) {
        if (chip->led_toggle_counter <
                chip->option.led_toggle_interval) {
            chip->led_toggle_counter++;
        } else {
            chip->led_toggle_counter = 0;
            toggle_gpio(chip, LED_GPIO);
        }
    }
}

static void rts51x_auto_delink_cmd(struct rts51x_chip *chip)
{
    rts51x_write_register(chip, AUTO_DELINK_EN,
            AUTO_DELINK, AUTO_DELINK);
}

static void rts51x_auto_delink_force_cmd(struct rts51x_chip *chip)
{
    rts51x_write_register(chip, AUTO_DELINK_EN,
            AUTO_DELINK | FORCE_DELINK,
            AUTO_DELINK | FORCE_DELINK);
}

#ifdef USING_POLLING_CYCLE_DELINK
/* using polling cycle as delink time */
static void rts51x_auto_delink_polling_cycle(struct rts51x_chip *chip)
{
    if (chip->auto_delink_counter <=
            chip->option.delink_delay * 2) {
        if (chip->auto_delink_counter ==
            chip->option.delink_delay) {
            if (chip->card_exist) {
                /* False card */
                if (!chip->card_ejected) {
                    /* if card is not ejected or safely
                     * remove,then do force delink */
                    RTS51X_DEBUGP("False card inserted,"
                            "do force delink\n");
                    rts51x_auto_delink_force_cmd(chip);
                    chip->auto_delink_counter =
                        chip->option.delink_delay * 2 + 1;
                }
            } else {
                RTS51X_DEBUGP("No card inserted, do delink\n");
                /* rts51x_write_register(chip, CARD_PWR_CTL,
                        DV3318_AUTO_PWR_OFF, 0); */
                rts51x_auto_delink_cmd(chip);
            }
        }
        if (chip->auto_delink_counter ==
            chip->option.delink_delay * 2) {
            RTS51X_DEBUGP("Try to do force delink\n");
            rts51x_auto_delink_force_cmd(chip);
        }
        chip->auto_delink_counter++;
    }
}

static void rts51x_auto_delink(struct rts51x_chip *chip)
{
    rts51x_auto_delink_polling_cycle(chip);
}
#else
/* some of called funcs are not implemented, so comment it out */
static void rts51x_auto_delink(struct rts51x_chip *chip)
{
}
#endif

void rts51x_polling_func(struct rts51x_chip *chip)
{

    rts51x_init_cards(chip);

#ifdef SUPPORT_OCP
    /* if OCP happen and card exist, then close card OE */
    if ((chip->ocp_stat & (MS_OCP_NOW | MS_OCP_EVER)) &&
            (chip->card_exist)) {

        rts51x_prepare_run(chip);

        if (chip->card_exist & SD_CARD)
            rts51x_write_register(chip, CARD_OE, SD_OUTPUT_EN, 0);
        else if (chip->card_exist & MS_CARD)
            rts51x_write_register(chip, CARD_OE, MS_OUTPUT_EN, 0);
        else if (chip->card_exist & XD_CARD)
            rts51x_write_register(chip, CARD_OE, XD_OUTPUT_EN, 0);
    }
#endif

    if (chip->idle_counter < IDLE_MAX_COUNT) {
        chip->idle_counter++;
    } else {
        if (!RTS51X_CHK_STAT(chip, STAT_IDLE)) {
            RTS51X_DEBUGP("Idle state!\n");
            RTS51X_SET_STAT(chip, STAT_IDLE);
            chip->led_toggle_counter = 0;
            /* Idle state, turn off LED
             * to reduce power consumption */
            if (chip->option.led_always_on
                && (chip->card_exist &
                (SD_CARD | MS_CARD | XD_CARD))
                && (!chip->card_ejected)) {
                turn_on_led(chip, LED_GPIO);
            } else {
                if (chip->rts5179) {
                    rts51x_ep0_write_register(chip,
                                  CARD_GPIO,
                                  0x03, 0x00);
                } else {
                    turn_off_led(chip, LED_GPIO);
                }

            }

#ifdef CLOSE_SSC_POWER
            if (!chip->card_ready) {
                rts51x_write_register(chip, CLK_DIV, CLK_CHANGE,
                              CLK_CHANGE);
                rts51x_write_register(chip, FPDCTL,
                              SSC_POWER_MASK,
                              SSC_POWER_DOWN);
                RTS51X_DEBUGP("Close SSC clock power!\n");
            }
#endif
        }
    }

    switch (RTS51X_GET_STAT(chip)) {
    case STAT_RUN:
        rts51x_blink_led(chip);
        do_remaining_work(chip);
        break;

    case STAT_IDLE:
        break;

    default:
        break;
    }

    if (chip->option.auto_delink_en && !chip->card_ready)
        rts51x_auto_delink(chip);
    else
        chip->auto_delink_counter = 0;
}

void rts51x_add_cmd(struct rts51x_chip *chip,
            u8 cmd_type, u16 reg_addr, u8 mask, u8 data)
{
    int i;

    if (chip->cmd_idx < ((CMD_BUF_LEN - CMD_OFFSET) / 4)) {
        i = CMD_OFFSET + chip->cmd_idx * 4;
        chip->cmd_buf[i++] =
            ((cmd_type & 0x03) << 6) | (u8) ((reg_addr >> 8) & 0x3F);
        chip->cmd_buf[i++] = (u8) reg_addr;
        chip->cmd_buf[i++] = mask;
        chip->cmd_buf[i++] = data;
        chip->cmd_idx++;
    }
}

int rts51x_send_cmd(struct rts51x_chip *chip, u8 flag, int timeout)
{
    int result;

    chip->cmd_buf[CNT_H] = (u8) (chip->cmd_idx >> 8);
    chip->cmd_buf[CNT_L] = (u8) (chip->cmd_idx);
    chip->cmd_buf[STAGE_FLAG] = flag;

    result = rts51x_transfer_data_rcc(chip, SND_BULK_PIPE(chip),
                      (void *)(chip->cmd_buf),
                      chip->cmd_idx * 4 + CMD_OFFSET,
                      0, NULL, timeout, MODE_C);
    if (result != STATUS_SUCCESS)
        TRACE_RET(chip, result);

    return STATUS_SUCCESS;
}

int rts51x_get_rsp(struct rts51x_chip *chip, int rsp_len, int timeout)
{
    int result;

    if (rsp_len <= 0)
        TRACE_RET(chip, STATUS_ERROR);
    /* rsp_len must aligned to dword */
    if (rsp_len % 4)
        rsp_len += (4 - rsp_len % 4);

    result = rts51x_transfer_data_rcc(chip, RCV_BULK_PIPE(chip),
                      (void *)chip->rsp_buf, rsp_len,
                      0, NULL, timeout, STAGE_R);
    if (result != STATUS_SUCCESS)
        TRACE_RET(chip, result);

    return STATUS_SUCCESS;
}

int rts51x_get_card_status(struct rts51x_chip *chip, u16 *status)
{
    int retval;
    u16 val;

#ifdef GET_CARD_STATUS_USING_EPC
    retval = rts51x_get_epc_status(chip, &val);

    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);
#else
    retval = rts51x_ctrl_transfer(chip, RCV_CTRL_PIPE(chip), 0x02, 0xC0,
                      0, 0, &val, 2, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);
#endif

    if (status)
        *status = val;

    return STATUS_SUCCESS;
}

int rts51x_write_register(struct rts51x_chip *chip, u16 addr, u8 mask, u8 data)
{
    int retval;

    rts51x_init_cmd(chip);
    rts51x_add_cmd(chip, WRITE_REG_CMD, addr, mask, data);
    retval = rts51x_send_cmd(chip, MODE_C, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, STATUS_FAIL);

    return STATUS_SUCCESS;
}

int rts51x_read_register(struct rts51x_chip *chip, u16 addr, u8 *data)
{
    int retval;

    if (data)
        *data = 0;
    rts51x_init_cmd(chip);
    rts51x_add_cmd(chip, READ_REG_CMD, addr, 0, 0);
    retval = rts51x_send_cmd(chip, MODE_CR, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, STATUS_FAIL);

    retval = rts51x_get_rsp(chip, 1, 100);

    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, STATUS_FAIL);

    if (data)
        *data = chip->rsp_buf[0];

    return STATUS_SUCCESS;
}

int rts51x_ep0_write_register(struct rts51x_chip *chip, u16 addr, u8 mask,
                  u8 data)
{
    int retval;
    u16 value = 0, index = 0;

    value |= (u16) (3 & 0x03) << 14;
    value |= (u16) (addr & 0x3FFF);
    index |= (u16) mask << 8;
    index |= (u16) data;

    retval = rts51x_ctrl_transfer(chip, SND_CTRL_PIPE(chip), 0x00, 0x40,
                      cpu_to_be16(value), cpu_to_be16(index),
                      NULL, 0, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    return STATUS_SUCCESS;
}

int rts51x_ep0_read_register(struct rts51x_chip *chip, u16 addr, u8 *data)
{
    int retval;
    u16 value = 0;
    u8 val;

    if (data)
        *data = 0;

    value |= (u16) (2 & 0x03) << 14;
    value |= (u16) (addr & 0x3FFF);

    retval = rts51x_ctrl_transfer(chip, RCV_CTRL_PIPE(chip), 0x00, 0xC0,
                      cpu_to_be16(value), 0, &val, 1, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    if (data)
        *data = val;

    return STATUS_SUCCESS;
}

int rts51x_seq_write_register(struct rts51x_chip *chip, u16 addr, u16 len,
                  u8 *data)
{
    int result;
    u16 cmd_len = len + 12;

    if (!data)
        TRACE_RET(chip, STATUS_ERROR);

    cmd_len = (cmd_len <= CMD_BUF_LEN) ? cmd_len : CMD_BUF_LEN;

    /* cmd_len must aligned to dword */
    if (cmd_len % 4)
        cmd_len += (4 - cmd_len % 4);

    chip->cmd_buf[0] = 'R';
    chip->cmd_buf[1] = 'T';
    chip->cmd_buf[2] = 'C';
    chip->cmd_buf[3] = 'R';
    chip->cmd_buf[PACKET_TYPE] = SEQ_WRITE;
    chip->cmd_buf[5] = (u8) (len >> 8);
    chip->cmd_buf[6] = (u8) len;
    chip->cmd_buf[STAGE_FLAG] = 0;
    chip->cmd_buf[8] = (u8) (addr >> 8);
    chip->cmd_buf[9] = (u8) addr;

    memcpy(chip->cmd_buf + 12, data, len);

    result = rts51x_transfer_data_rcc(chip, SND_BULK_PIPE(chip),
                      (void *)(chip->cmd_buf), cmd_len, 0,
                      NULL, 100, MODE_C);
    if (result != STATUS_SUCCESS)
        TRACE_RET(chip, result);

    return STATUS_SUCCESS;
}

int rts51x_seq_read_register(struct rts51x_chip *chip, u16 addr, u16 len,
                 u8 *data)
{
    int result;
    u16 rsp_len;

    if (!data)
        TRACE_RET(chip, STATUS_ERROR);
    /* rsp_len must aligned to dword */
    if (len % 4)
        rsp_len = len + (4 - len % 4);
    else
        rsp_len = len;

    chip->cmd_buf[0] = 'R';
    chip->cmd_buf[1] = 'T';
    chip->cmd_buf[2] = 'C';
    chip->cmd_buf[3] = 'R';
    chip->cmd_buf[PACKET_TYPE] = SEQ_READ;
    chip->cmd_buf[5] = (u8) (rsp_len >> 8);
    chip->cmd_buf[6] = (u8) rsp_len;
    chip->cmd_buf[STAGE_FLAG] = STAGE_R;
    chip->cmd_buf[8] = (u8) (addr >> 8);
    chip->cmd_buf[9] = (u8) addr;

    result = rts51x_transfer_data_rcc(chip, SND_BULK_PIPE(chip),
                      (void *)(chip->cmd_buf), 12, 0, NULL,
                      100, MODE_C);
    if (result != STATUS_SUCCESS)
        TRACE_RET(chip, result);

    result = rts51x_transfer_data_rcc(chip, RCV_BULK_PIPE(chip),
                      (void *)data, rsp_len, 0, NULL, 100,
                      STAGE_DI);
    if (result != STATUS_SUCCESS)
        TRACE_RET(chip, result);

    return STATUS_SUCCESS;
}

int rts51x_read_ppbuf(struct rts51x_chip *chip, u8 *buf, int buf_len)
{
    int retval;

    if (!buf)
        TRACE_RET(chip, STATUS_ERROR);

    retval =
        rts51x_seq_read_register(chip, PPBUF_BASE2, (u16) buf_len, buf);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    return STATUS_SUCCESS;
}

int rts51x_write_ppbuf(struct rts51x_chip *chip, u8 *buf, int buf_len)
{
    int retval;

    if (!buf)
        TRACE_RET(chip, STATUS_ERROR);

    retval =
        rts51x_seq_write_register(chip, PPBUF_BASE2, (u16) buf_len, buf);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    return STATUS_SUCCESS;
}

int rts51x_write_phy_register(struct rts51x_chip *chip, u8 addr, u8 val)
{
    int retval;

    RTS51X_DEBUGP("Write 0x%x to phy register 0x%x\n", val, addr);

    rts51x_init_cmd(chip);

    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VSTAIN, 0xFF, val);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VCONTROL, 0xFF, addr & 0x0F);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VCONTROL, 0xFF,
               (addr >> 4) & 0x0F);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01);

    retval = rts51x_send_cmd(chip, MODE_C, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    return STATUS_SUCCESS;
}

int rts51x_read_phy_register(struct rts51x_chip *chip, u8 addr, u8 *val)
{
    int retval;

    RTS51X_DEBUGP("Read from phy register 0x%x\n", addr);

    rts51x_init_cmd(chip);

    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VCONTROL, 0xFF, 0x07);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VCONTROL, 0xFF,
               (addr >> 4) & 0x0F);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VCONTROL, 0xFF, addr & 0x0F);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00);
    rts51x_add_cmd(chip, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01);
    rts51x_add_cmd(chip, READ_REG_CMD, HS_VSTAOUT, 0, 0);

    retval = rts51x_send_cmd(chip, MODE_CR, 100);
    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    retval = rts51x_get_rsp(chip, 1, 100);

    if (retval != STATUS_SUCCESS)
        TRACE_RET(chip, retval);

    if (val)
        *val = chip->rsp_buf[0];

    RTS51X_DEBUGP("Return value: 0x%x\n", chip->rsp_buf[0]);

    return STATUS_SUCCESS;
}

void rts51x_do_before_power_down(struct rts51x_chip *chip)
{
    RTS51X_DEBUGP("rts51x_do_before_power_down\n");

    rts51x_prepare_run(chip);

    rts51x_release_cards(chip);
    if (chip->rts5179)
        rts51x_ep0_write_register(chip, CARD_GPIO, 0x03, 0x00);
    else
        turn_off_led(chip, LED_GPIO);

    chip->cur_clk = 0;
    chip->card_exist = 0;
    chip->cur_card = 0;
    if (chip->asic_code) {
        if (CHECK_PKG(chip, LQFP48)) {
            rts51x_write_register(chip, CARD_PULL_CTL3, 0x80, 0x00);
            rts51x_write_register(chip, CARD_PULL_CTL6, 0xf0, 0x50);
        } else {
            rts51x_write_register(chip, CARD_PULL_CTL1, 0x30, 0x10);
            rts51x_write_register(chip, CARD_PULL_CTL3, 0x80, 0x00);
            rts51x_write_register(chip, CARD_PULL_CTL6, 0x0c, 0x04);
        }
    }
    if (CHECK_PKG(chip, LQFP48))
        rts51x_write_register(chip, CARD_PWR_CTL, LDO3318_PWR_MASK,
                      LDO_OFF);
}

void rts51x_clear_hw_error(struct rts51x_chip *chip)
{
    rts51x_ep0_write_register(chip, SFSM_ED, 0xf8, 0xf8);
}

void rts51x_prepare_run(struct rts51x_chip *chip)
{
#ifdef CLOSE_SSC_POWER
    if (RTS51X_CHK_STAT(chip, STAT_IDLE) && (!chip->card_ready)) {
        rts51x_write_register(chip, FPDCTL, SSC_POWER_MASK,
                      SSC_POWER_ON);
        udelay(100);
        RTS51X_DEBUGP("Open SSC clock power.\n");

        rts51x_write_register(chip, CLK_DIV, CLK_CHANGE, 0x00);
    }
#endif
}

#ifdef _MSG_TRACE
void rts51x_trace_msg(struct rts51x_chip *chip, unsigned char *buf, int clear)
{
    unsigned char *ptr;
    int i, msg_cnt;

    if (!buf)
        return;

    ptr = buf;

    if (chip->trace_msg[chip->msg_idx].valid)
        msg_cnt = TRACE_ITEM_CNT;
    else
        msg_cnt = chip->msg_idx;
    *(ptr++) = (u8) (msg_cnt >> 24);
    *(ptr++) = (u8) (msg_cnt >> 16);
    *(ptr++) = (u8) (msg_cnt >> 8);
    *(ptr++) = (u8) msg_cnt;
    RTS51X_DEBUGP("Trace message count is %d\n", msg_cnt);

    for (i = 1; i <= msg_cnt; i++) {
        int j, idx;

        idx = chip->msg_idx - i;
        if (idx < 0)
            idx += TRACE_ITEM_CNT;

        *(ptr++) = (u8) (chip->trace_msg[idx].line >> 8);
        *(ptr++) = (u8) (chip->trace_msg[idx].line);
        for (j = 0; j < MSG_FUNC_LEN; j++)
            *(ptr++) = chip->trace_msg[idx].func[j];
        for (j = 0; j < MSG_FILE_LEN; j++)
            *(ptr++) = chip->trace_msg[idx].file[j];
        for (j = 0; j < TIME_VAL_LEN; j++)
            *(ptr++) = chip->trace_msg[idx].timeval_buf[j];
    }

    if (clear) {
        chip->msg_idx = 0;
        for (i = 0; i < TRACE_ITEM_CNT; i++)
            chip->trace_msg[i].valid = 0;
    }
}
#endif

void rts51x_pp_status(struct rts51x_chip *chip, unsigned int lun, u8 *status,
              u8 status_len)
{
    struct sd_info *sd_card = &(chip->sd_card);
    struct ms_info *ms_card = &(chip->ms_card);
    u8 card = get_lun_card(chip, lun);
#ifdef SUPPORT_OC
    u8 oc_now_mask = 0, oc_ever_mask = 0;
#endif

    if (!status || (status_len < 32))
        return;
    /* IC Version */
    status[0] = (u8) RTS51X_GET_PID(chip);
    status[1] = (u8) (chip->ic_version);

    /* Auto delink mode */
    if (chip->option.auto_delink_en)
        status[2] = 0x10;
    else
        status[2] = 0x00;

    /* Spec version */
    status[3] = 20;
    status[4] = 10;
    status[5] = 05;
    status[6] = 21;

    /* Card WP */
    if (chip->card_wp)
        status[7] = 0x20;
    else
        status[7] = 0x00;

#ifdef SUPPORT_OC
    /* Over current status */
    status[8] = 0;
    oc_now_mask = MS_OCP_NOW;
    oc_ever_mask = MS_OCP_EVER;

    if (chip->ocp_stat & oc_now_mask)
        status[8] |= 0x02;
    if (chip->ocp_stat & oc_ever_mask)
        status[8] |= 0x01;
#endif

    if (card == SD_CARD) {
        if (CHK_SD(sd_card)) {
            if (CHK_SD_HCXC(sd_card)) {
                if (sd_card->capacity > 0x4000000)
                    /* SDXC */
                    status[0x0E] = 0x02;
                else /* SDHC */
                    status[0x0E] = 0x01;
            } else { /* SDSC */
                status[0x0E] = 0x00;
            }

            if (CHK_SD_SDR104(sd_card))
                status[0x0F] = 0x03;
            else if (CHK_SD_DDR50(sd_card))
                status[0x0F] = 0x04;
            else if (CHK_SD_SDR50(sd_card))
                status[0x0F] = 0x02;
            else if (CHK_SD_HS(sd_card))
                status[0x0F] = 0x01;
            else
                status[0x0F] = 0x00; /* Normal speed */
        } else {
            if (CHK_MMC_SECTOR_MODE(sd_card))
                status[0x0E] = 0x01; /* High capacity */
            else
                status[0x0E] = 0x00; /* Normal capacity */

            if (CHK_MMC_DDR52(sd_card))
                status[0x0F] = 0x03; /* DDR 52M */
            else if (CHK_MMC_52M(sd_card))
                status[0x0F] = 0x02; /* SDR 52M */
            else if (CHK_MMC_26M(sd_card))
                status[0x0F] = 0x01; /* SDR 26M */
            else
                status[0x0F] = 0x00; /* Normal speed */
        }
    } else if (card == MS_CARD) {
        if (CHK_MSPRO(ms_card)) {
            if (CHK_MSXC(ms_card))
                status[0x0E] = 0x01; /* XC */
            else
                status[0x0E] = 0x00;

            if (CHK_HG8BIT(ms_card))
                status[0x0F] = 0x01;
            else
                status[0x0F] = 0x00;
        }
    }

    /* Function 0
     * Support Magic Gate, CPRM and PhyRegister R/W */
    status[0x18] = 0x8A;

    /* Function 2
     * Support OC LUN status & WP LUN status */
    status[0x1A] = 0x28;

    /* Function 2
     * Support OC LUN status & WP LUN status */
    status[0x1A] = 0x28;
}

void rts51x_read_status(struct rts51x_chip *chip, unsigned int lun,
            u8 *rts51x_status, u8 status_len)
{
    if (!rts51x_status || (status_len < 16))
        return;
    /* VID */
    rts51x_status[0] = (u8) (RTS51X_GET_VID(chip) >> 8);
    rts51x_status[1] = (u8) RTS51X_GET_VID(chip);

    /* PID */
    rts51x_status[2] = (u8) (RTS51X_GET_PID(chip) >> 8);
    rts51x_status[3] = (u8) RTS51X_GET_PID(chip);

    /* gbLUN */
    rts51x_status[4] = (u8) lun;

    /* Lun Card Number */
    if (chip->card_exist) {
        if (chip->card_exist & XD_CARD)
            rts51x_status[5] = 4; /* xD Card */
        else if (chip->card_exist & SD_CARD)
            rts51x_status[5] = 2; /* SD Card */
        else if (chip->card_exist & MS_CARD)
            rts51x_status[5] = 3; /* MS Card */
        else
            rts51x_status[5] = 7; /* Multi */
    } else {
        rts51x_status[5] = 7;   /* Multi */
    }

    /* Total LUNs */
    rts51x_status[6] = 1;

    /* IC Version */
    rts51x_status[7] = (u8) RTS51X_GET_PID(chip);
    rts51x_status[8] = chip->ic_version;

    /* Physical Exist */
    if (check_card_exist(chip, lun))
        rts51x_status[9] = 1;
    else
        rts51x_status[9] = 0;

    /* Multi Flag */
    rts51x_status[10] = 1;

    /* LUN Valid Map */
    rts51x_status[11] = XD_CARD | SD_CARD | MS_CARD;

    /* Logical Exist */
    if (check_card_ready(chip, lun))
        rts51x_status[12] = 1;
    else
        rts51x_status[12] = 0;

    /* Detailed Type */
    if (get_lun_card(chip, lun) == XD_CARD) {
        rts51x_status[13] = 0x40;
    } else if (get_lun_card(chip, lun) == SD_CARD) {
        struct sd_info *sd_card = &(chip->sd_card);

        rts51x_status[13] = 0x20;
        if (CHK_SD(sd_card)) {
            if (CHK_SD_HCXC(sd_card))
                rts51x_status[13] |= 0x04; /* Hi capacity SD */
            if (CHK_SD_HS(sd_card))
                rts51x_status[13] |= 0x02; /* Hi speed SD */
        } else {
            rts51x_status[13] |= 0x08; /* MMC card */
            if (CHK_MMC_52M(sd_card))
                rts51x_status[13] |= 0x02; /* Hi speed */
            if (CHK_MMC_SECTOR_MODE(sd_card))
                rts51x_status[13] |= 0x04; /* Hi capacity */
        }
    } else if (get_lun_card(chip, lun) == MS_CARD) {
        struct ms_info *ms_card = &(chip->ms_card);

        if (CHK_MSPRO(ms_card)) {
            rts51x_status[13] = 0x38; /* MS Pro */
            if (CHK_HG8BIT(ms_card))
                rts51x_status[13] |= 0x04; /* HG */
#ifdef SUPPORT_MSXC
            if (CHK_MSXC(ms_card))
                rts51x_status[13] |= 0x01; /* MSXC */
#endif
        } else {
            rts51x_status[13] = 0x30;
        }
    } else {
        rts51x_status[13] = 0x70;
    }
/* Support OC, auto delink, vendor r/w, get bus width */
    rts51x_status[14] = 0x78;

    rts51x_status[15] = 0x82;
}

int rts51x_transfer_data_rcc(struct rts51x_chip *chip, unsigned int pipe,
                 void *buf, unsigned int len, int use_sg,
                 unsigned int *act_len, int timeout, u8 stage_flag)
{
    int retval;

    retval =
        rts51x_transfer_data(chip, pipe, buf, len, use_sg, act_len,
                 timeout);

    return retval;

}