linux-imx

/* Realtek USB Memstick Card Interface driver

 *

 * Copyright(c) 2009-2013 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 version 2

 * as published by the Free Software Foundation.

 *

 * 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:

 *   Roger Tseng <rogerable@realtek.com>

 */

​

#include <linux/module.h>

#include <linux/highmem.h>

#include <linux/delay.h>

#include <linux/platform_device.h>

#include <linux/workqueue.h>

#include <linux/memstick.h>

#include <linux/kthread.h>

#include <linux/rtsx_usb.h>

#include <linux/pm_runtime.h>

#include <linux/mutex.h>

#include <linux/sched.h>

#include <linux/completion.h>

#include <asm/unaligned.h>

​

struct rtsx_usb_ms {

    struct platform_device  *pdev;

    struct rtsx_ucr *ucr;

    struct memstick_host    *msh;

    struct memstick_request *req;

​

    struct mutex        host_mutex;

    struct work_struct  handle_req;

    struct delayed_work poll_card;

​

    u8          ssc_depth;

    unsigned int        clock;

    int         power_mode;

    unsigned char           ifmode;

    bool            eject;

    bool            system_suspending;

};

​

static inline struct device *ms_dev(struct rtsx_usb_ms *host)

{

    return &(host->pdev->dev);

}

​

static inline void ms_clear_error(struct rtsx_usb_ms *host)

{

    struct rtsx_ucr *ucr = host->ucr;

    rtsx_usb_ep0_write_register(ucr, CARD_STOP,

                  MS_STOP | MS_CLR_ERR,

                  MS_STOP | MS_CLR_ERR);

​

    rtsx_usb_clear_dma_err(ucr);

    rtsx_usb_clear_fsm_err(ucr);

}

​

#ifdef DEBUG

​

static void ms_print_debug_regs(struct rtsx_usb_ms *host)

{

    struct rtsx_ucr *ucr = host->ucr;

    u16 i;

    u8 *ptr;

​

    /* Print MS host internal registers */

    rtsx_usb_init_cmd(ucr);

​

    /* MS_CFG to MS_INT_REG */

    for (i = 0xFD40; i <= 0xFD44; i++)

        rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0);

​

    /* CARD_SHARE_MODE to CARD_GPIO */

    for (i = 0xFD51; i <= 0xFD56; i++)

        rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0);

​

    /* CARD_PULL_CTLx */

    for (i = 0xFD60; i <= 0xFD65; i++)

        rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0);

​

    /* CARD_DATA_SOURCE, CARD_SELECT, CARD_CLK_EN, CARD_PWR_CTL */