// SPDX-License-Identifier: GPL-2.0-only /* Driver for Realtek USB card reader * * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. * * Author: * Roger Tseng */ #include #include #include #include #include #include #include static int polling_pipe = 1; module_param(polling_pipe, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(polling_pipe, "polling pipe (0: ctl, 1: bulk)"); static const struct mfd_cell rtsx_usb_cells[] = { [RTSX_USB_SD_CARD] = { .name = "rtsx_usb_sdmmc", .pdata_size = 0, }, [RTSX_USB_MS_CARD] = { .name = "rtsx_usb_ms", .pdata_size = 0, }, }; static void rtsx_usb_sg_timed_out(struct timer_list *t) { struct rtsx_ucr *ucr = from_timer(ucr, t, sg_timer); dev_dbg(&ucr->pusb_intf->dev, "%s: sg transfer timed out", __func__); usb_sg_cancel(&ucr->current_sg); } static int rtsx_usb_bulk_transfer_sglist(struct rtsx_ucr *ucr, unsigned int pipe, struct scatterlist *sg, int num_sg, unsigned int length, unsigned int *act_len, int timeout) { int ret; dev_dbg(&ucr->pusb_intf->dev, "%s: xfer %u bytes, %d entries\n", __func__, length, num_sg); ret = usb_sg_init(&ucr->current_sg, ucr->pusb_dev, pipe, 0, sg, num_sg, length, GFP_NOIO); if (ret) return ret; ucr->sg_timer.expires = jiffies + msecs_to_jiffies(timeout); add_timer(&ucr->sg_timer); usb_sg_wait(&ucr->current_sg); if (!del_timer_sync(&ucr->sg_timer)) ret = -ETIMEDOUT; else ret = ucr->current_sg.status; if (act_len) *act_len = ucr->current_sg.bytes; return ret; } int rtsx_usb_transfer_data(struct rtsx_ucr *ucr, unsigned int pipe, void *buf, unsigned int len, int num_sg, unsigned int *act_len, int timeout) { if (timeout < 600) timeout = 600; if (num_sg) return rtsx_usb_bulk_transfer_sglist(ucr, pipe, (struct scatterlist *)buf, num_sg, len, act_len, timeout); else return usb_bulk_msg(ucr->pusb_dev, pipe, buf, len, act_len, timeout); } EXPORT_SYMBOL_GPL(rtsx_usb_transfer_data); static inline void rtsx_usb_seq_cmd_hdr(struct rtsx_ucr *ucr, u16 addr, u16 len, u8 seq_type) { rtsx_usb_cmd_hdr_tag(ucr); ucr->cmd_buf[PACKET_TYPE] = seq_type; ucr->cmd_buf[5] = (u8)(len >> 8); ucr->cmd_buf[6] = (u8)len; ucr->cmd_buf[8] = (u8)(addr >> 8); ucr->cmd_buf[9] = (u8)addr; if (seq_type == SEQ_WRITE) ucr->cmd_buf[STAGE_FLAG] = 0; else ucr->cmd_buf[STAGE_FLAG] = STAGE_R; } static int rtsx_usb_seq_write_register(struct rtsx_ucr *ucr, u16 addr, u16 len, u8 *data) { u16 cmd_len = ALIGN(SEQ_WRITE_DATA_OFFSET + len, 4); if (!data) return -EINVAL; if (cmd_len > IOBUF_SIZE) return -EINVAL; rtsx_usb_seq_cmd_hdr(ucr, addr, len, SEQ_WRITE); memcpy(ucr->cmd_buf + SEQ_WRITE_DATA_OFFSET, data, len); return rtsx_usb_transfer_data(ucr, usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT), ucr->cmd_buf, cmd_len, 0, NULL, 100); } static int rtsx_usb_seq_read_register(struct rtsx_ucr *ucr, u16 addr, u16 len, u8 *data) { int i, ret; u16 rsp_len = round_down(len, 4); u16 res_len = len - rsp_len; if (!data) return -EINVAL; /* 4-byte aligned part */ if (rsp_len) { rtsx_usb_seq_cmd_hdr(ucr, addr, len, SEQ_READ); ret = rtsx_usb_transfer_data(ucr, usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT), ucr->cmd_buf, 12, 0, NULL, 100); if (ret) return ret; ret = rtsx_usb_transfer_data(ucr, usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN), data, rsp_len, 0, NULL, 100); if (ret) return ret; } /* unaligned part */ for (i = 0; i < res_len; i++) { ret = rtsx_usb_read_register(ucr, addr + rsp_len + i, data + rsp_len + i); if (ret) return ret; } return 0; } int rtsx_usb_read_ppbuf(struct rtsx_ucr *ucr, u8 *buf, int buf_len) { return rtsx_usb_seq_read_register(ucr, PPBUF_BASE2, (u16)buf_len, buf); } EXPORT_SYMBOL_GPL(rtsx_usb_read_ppbuf); int rtsx_usb_write_ppbuf(struct rtsx_ucr *ucr, u8 *buf, int buf_len) { return rtsx_usb_seq_write_register(ucr, PPBUF_BASE2, (u16)buf_len, buf); } EXPORT_SYMBOL_GPL(rtsx_usb_write_ppbuf); int rtsx_usb_ep0_write_register(struct rtsx_ucr *ucr, u16 addr, u8 mask, u8 data) { u16 value, index; addr |= EP0_WRITE_REG_CMD << EP0_OP_SHIFT; value = swab16(addr); index = mask | data << 8; return usb_control_msg(ucr->pusb_dev, usb_sndctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_REG_OP, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 100); } EXPORT_SYMBOL_GPL(rtsx_usb_ep0_write_register); int rtsx_usb_ep0_read_register(struct rtsx_ucr *ucr, u16 addr, u8 *data) { u16 value; u8 *buf; int ret; if (!data) return -EINVAL; buf = kzalloc(sizeof(u8), GFP_KERNEL); if (!buf) return -ENOMEM; addr |= EP0_READ_REG_CMD << EP0_OP_SHIFT; value = swab16(addr); ret = usb_control_msg(ucr->pusb_dev, usb_rcvctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_REG_OP, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, 0, buf, 1, 100); *data = *buf; kfree(buf); return ret; } EXPORT_SYMBOL_GPL(rtsx_usb_ep0_read_register); void rtsx_usb_add_cmd(struct rtsx_ucr *ucr, u8 cmd_type, u16 reg_addr, u8 mask, u8 data) { int i; if (ucr->cmd_idx < (IOBUF_SIZE - CMD_OFFSET) / 4) { i = CMD_OFFSET + ucr->cmd_idx * 4; ucr->cmd_buf[i++] = ((cmd_type & 0x03) << 6) | (u8)((reg_addr >> 8) & 0x3F); ucr->cmd_buf[i++] = (u8)reg_addr; ucr->cmd_buf[i++] = mask; ucr->cmd_buf[i++] = data; ucr->cmd_idx++; } } EXPORT_SYMBOL_GPL(rtsx_usb_add_cmd); int rtsx_usb_send_cmd(struct rtsx_ucr *ucr, u8 flag, int timeout) { int ret; ucr->cmd_buf[CNT_H] = (u8)(ucr->cmd_idx >> 8); ucr->cmd_buf[CNT_L] = (u8)(ucr->cmd_idx); ucr->cmd_buf[STAGE_FLAG] = flag; ret = rtsx_usb_transfer_data(ucr, usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT), ucr->cmd_buf, ucr->cmd_idx * 4 + CMD_OFFSET, 0, NULL, timeout); if (ret) { rtsx_usb_clear_fsm_err(ucr); return ret; } return 0; } EXPORT_SYMBOL_GPL(rtsx_usb_send_cmd); int rtsx_usb_get_rsp(struct rtsx_ucr *ucr, int rsp_len, int timeout) { if (rsp_len <= 0) return -EINVAL; rsp_len = ALIGN(rsp_len, 4); return rtsx_usb_transfer_data(ucr, usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN), ucr->rsp_buf, rsp_len, 0, NULL, timeout); } EXPORT_SYMBOL_GPL(rtsx_usb_get_rsp); static int rtsx_usb_get_status_with_bulk(struct rtsx_ucr *ucr, u16 *status) { int ret; rtsx_usb_init_cmd(ucr); rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_EXIST, 0x00, 0x00); rtsx_usb_add_cmd(ucr, READ_REG_CMD, OCPSTAT, 0x00, 0x00); ret = rtsx_usb_send_cmd(ucr, MODE_CR, 100); if (ret) return ret; ret = rtsx_usb_get_rsp(ucr, 2, 100); if (ret) return ret; *status = ((ucr->rsp_buf[0] >> 2) & 0x0f) | ((ucr->rsp_buf[1] & 0x03) << 4); return 0; } int rtsx_usb_get_card_status(struct rtsx_ucr *ucr, u16 *status) { int ret; u16 *buf; if (!status) return -EINVAL; if (polling_pipe == 0) { buf = kzalloc(sizeof(u16), GFP_KERNEL); if (!buf) return -ENOMEM; ret = usb_control_msg(ucr->pusb_dev, usb_rcvctrlpipe(ucr->pusb_dev, 0), RTSX_USB_REQ_POLL, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, buf, 2, 100); *status = *buf; kfree(buf); } else { ret = rtsx_usb_get_status_with_bulk(ucr, status); } /* usb_control_msg may return positive when success */ if (ret < 0) return ret; return 0; } EXPORT_SYMBOL_GPL(rtsx_usb_get_card_status); static int rtsx_usb_write_phy_register(struct rtsx_ucr *ucr, u8 addr, u8 val) { dev_dbg(&ucr->pusb_intf->dev, "Write 0x%x to phy register 0x%x\n", val, addr); rtsx_usb_init_cmd(ucr); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VSTAIN, 0xFF, val); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VCONTROL, 0xFF, addr & 0x0F); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VCONTROL, 0xFF, (addr >> 4) & 0x0F); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x00); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, HS_VLOADM, 0xFF, 0x01); return rtsx_usb_send_cmd(ucr, MODE_C, 100); } int rtsx_usb_write_register(struct rtsx_ucr *ucr, u16 addr, u8 mask, u8 data) { rtsx_usb_init_cmd(ucr); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, addr, mask, data); return rtsx_usb_send_cmd(ucr, MODE_C, 100); } EXPORT_SYMBOL_GPL(rtsx_usb_write_register); int rtsx_usb_read_register(struct rtsx_ucr *ucr, u16 addr, u8 *data) { int ret; if (data != NULL) *data = 0; rtsx_usb_init_cmd(ucr); rtsx_usb_add_cmd(ucr, READ_REG_CMD, addr, 0, 0); ret = rtsx_usb_send_cmd(ucr, MODE_CR, 100); if (ret) return ret; ret = rtsx_usb_get_rsp(ucr, 1, 100); if (ret) return ret; if (data != NULL) *data = ucr->rsp_buf[0]; return 0; } EXPORT_SYMBOL_GPL(rtsx_usb_read_register); static inline u8 double_ssc_depth(u8 depth) { return (depth > 1) ? (depth - 1) : depth; } static u8 revise_ssc_depth(u8 ssc_depth, u8 div) { if (div > CLK_DIV_1) { if (ssc_depth > div - 1) ssc_depth -= (div - 1); else ssc_depth = SSC_DEPTH_2M; } return ssc_depth; } int rtsx_usb_switch_clock(struct rtsx_ucr *ucr, unsigned int card_clock, u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk) { int ret; u8 n, clk_divider, mcu_cnt, div; if (!card_clock) { ucr->cur_clk = 0; return 0; } if (initial_mode) { /* We use 250k(around) here, in initial stage */ clk_divider = SD_CLK_DIVIDE_128; card_clock = 30000000; } else { clk_divider = SD_CLK_DIVIDE_0; } ret = rtsx_usb_write_register(ucr, SD_CFG1, SD_CLK_DIVIDE_MASK, clk_divider); if (ret < 0) return ret; card_clock /= 1000000; dev_dbg(&ucr->pusb_intf->dev, "Switch card clock to %dMHz\n", card_clock); if (!initial_mode && double_clk) card_clock *= 2; dev_dbg(&ucr->pusb_intf->dev, "Internal SSC clock: %dMHz (cur_clk = %d)\n", card_clock, ucr->cur_clk); if (card_clock == ucr->cur_clk) return 0; /* Converting clock value into internal settings: n and div */ n = card_clock - 2; if ((card_clock <= 2) || (n > MAX_DIV_N)) return -EINVAL; mcu_cnt = 60/card_clock + 3; if (mcu_cnt > 15) mcu_cnt = 15; /* Make sure that the SSC clock div_n is not less than MIN_DIV_N */ div = CLK_DIV_1; while (n < MIN_DIV_N && div < CLK_DIV_4) { n = (n + 2) * 2 - 2; div++; } dev_dbg(&ucr->pusb_intf->dev, "n = %d, div = %d\n", n, div); if (double_clk) ssc_depth = double_ssc_depth(ssc_depth); ssc_depth = revise_ssc_depth(ssc_depth, div); dev_dbg(&ucr->pusb_intf->dev, "ssc_depth = %d\n", ssc_depth); rtsx_usb_init_cmd(ucr); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, CLK_CHANGE); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, 0x3F, (div << 4) | mcu_cnt); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SSC_CTL2, SSC_DEPTH_MASK, ssc_depth); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB); if (vpclk) { rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, PHASE_NOT_RESET); } ret = rtsx_usb_send_cmd(ucr, MODE_C, 2000); if (ret < 0) return ret; ret = rtsx_usb_write_register(ucr, SSC_CTL1, 0xff, SSC_RSTB | SSC_8X_EN | SSC_SEL_4M); if (ret < 0) return ret; /* Wait SSC clock stable */ usleep_range(100, 1000); ret = rtsx_usb_write_register(ucr, CLK_DIV, CLK_CHANGE, 0); if (ret < 0) return ret; ucr->cur_clk = card_clock; return 0; } EXPORT_SYMBOL_GPL(rtsx_usb_switch_clock); int rtsx_usb_card_exclusive_check(struct rtsx_ucr *ucr, int card) { int ret; u16 val; u16 cd_mask[] = { [RTSX_USB_SD_CARD] = (CD_MASK & ~SD_CD), [RTSX_USB_MS_CARD] = (CD_MASK & ~MS_CD) }; ret = rtsx_usb_get_card_status(ucr, &val); /* * If get status fails, return 0 (ok) for the exclusive check * and let the flow fail at somewhere else. */ if (ret) return 0; if (val & cd_mask[card]) return -EIO; return 0; } EXPORT_SYMBOL_GPL(rtsx_usb_card_exclusive_check); static int rtsx_usb_reset_chip(struct rtsx_ucr *ucr) { int ret; u8 val; rtsx_usb_init_cmd(ucr); if (CHECK_PKG(ucr, LQFP48)) { rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, LDO3318_PWR_MASK, LDO_SUSPEND); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, FORCE_LDO_POWERB, FORCE_LDO_POWERB); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0x30, 0x10); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0x03, 0x01); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0x0C, 0x04); } rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SYS_DUMMY0, NYET_MSAK, NYET_EN); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CD_DEGLITCH_WIDTH, 0xFF, 0x08); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CD_DEGLITCH_EN, XD_CD_DEGLITCH_EN, 0x0); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD30_DRIVE_SEL, SD30_DRIVE_MASK, DRIVER_TYPE_D); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DRIVE_SEL, SD20_DRIVE_MASK, 0x0); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG, 0xE0, 0x0); if (ucr->is_rts5179) rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0x03, 0x01); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DMA1_CTL, EXTEND_DMA1_ASYNC_SIGNAL, EXTEND_DMA1_ASYNC_SIGNAL); rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_INT_PEND, XD_INT | MS_INT | SD_INT, XD_INT | MS_INT | SD_INT); ret = rtsx_usb_send_cmd(ucr, MODE_C, 100); if (ret) return ret; /* config non-crystal mode */ rtsx_usb_read_register(ucr, CFG_MODE, &val); if ((val & XTAL_FREE) || ((val & CLK_MODE_MASK) == CLK_MODE_NON_XTAL)) { ret = rtsx_usb_write_phy_register(ucr, 0xC2, 0x7C); if (ret) return ret; } return 0; } static int rtsx_usb_init_chip(struct rtsx_ucr *ucr) { int ret; u8 val; rtsx_usb_clear_fsm_err(ucr); /* power on SSC */ ret = rtsx_usb_write_register(ucr, FPDCTL, SSC_POWER_MASK, SSC_POWER_ON); if (ret) return ret; usleep_range(100, 1000); ret = rtsx_usb_write_register(ucr, CLK_DIV, CLK_CHANGE, 0x00); if (ret) return ret; /* determine IC version */ ret = rtsx_usb_read_register(ucr, HW_VERSION, &val); if (ret) return ret; ucr->ic_version = val & HW_VER_MASK; /* determine package */ ret = rtsx_usb_read_register(ucr, CARD_SHARE_MODE, &val); if (ret) return ret; if (val & CARD_SHARE_LQFP_SEL) { ucr->package = LQFP48; dev_dbg(&ucr->pusb_intf->dev, "Package: LQFP48\n"); } else { ucr->package = QFN24; dev_dbg(&ucr->pusb_intf->dev, "Package: QFN24\n"); } /* determine IC variations */ rtsx_usb_read_register(ucr, CFG_MODE_1, &val); if (val & RTS5179) { ucr->is_rts5179 = true; dev_dbg(&ucr->pusb_intf->dev, "Device is rts5179\n"); } else { ucr->is_rts5179 = false; } return rtsx_usb_reset_chip(ucr); } static int rtsx_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *usb_dev = interface_to_usbdev(intf); struct rtsx_ucr *ucr; int ret; dev_dbg(&intf->dev, ": Realtek USB Card Reader found at bus %03d address %03d\n", usb_dev->bus->busnum, usb_dev->devnum); ucr = devm_kzalloc(&intf->dev, sizeof(*ucr), GFP_KERNEL); if (!ucr) return -ENOMEM; ucr->pusb_dev = usb_dev; ucr->iobuf = usb_alloc_coherent(ucr->pusb_dev, IOBUF_SIZE, GFP_KERNEL, &ucr->iobuf_dma); if (!ucr->iobuf) return -ENOMEM; usb_set_intfdata(intf, ucr); ucr->vendor_id = id->idVendor; ucr->product_id = id->idProduct; ucr->cmd_buf = ucr->rsp_buf = ucr->iobuf; mutex_init(&ucr->dev_mutex); ucr->pusb_intf = intf; /* initialize */ ret = rtsx_usb_init_chip(ucr); if (ret) goto out_init_fail; /* initialize USB SG transfer timer */ timer_setup(&ucr->sg_timer, rtsx_usb_sg_timed_out, 0); ret = mfd_add_hotplug_devices(&intf->dev, rtsx_usb_cells, ARRAY_SIZE(rtsx_usb_cells)); if (ret) goto out_init_fail; #ifdef CONFIG_PM intf->needs_remote_wakeup = 1; usb_enable_autosuspend(usb_dev); #endif return 0; out_init_fail: usb_set_intfdata(ucr->pusb_intf, NULL); usb_free_coherent(ucr->pusb_dev, IOBUF_SIZE, ucr->iobuf, ucr->iobuf_dma); return ret; } static void rtsx_usb_disconnect(struct usb_interface *intf) { struct rtsx_ucr *ucr = (struct rtsx_ucr *)usb_get_intfdata(intf); dev_dbg(&intf->dev, "%s called\n", __func__); mfd_remove_devices(&intf->dev); usb_set_intfdata(ucr->pusb_intf, NULL); usb_free_coherent(ucr->pusb_dev, IOBUF_SIZE, ucr->iobuf, ucr->iobuf_dma); } #ifdef CONFIG_PM static int rtsx_usb_suspend(struct usb_interface *intf, pm_message_t message) { struct rtsx_ucr *ucr = (struct rtsx_ucr *)usb_get_intfdata(intf); u16 val = 0; dev_dbg(&intf->dev, "%s called with pm message 0x%04x\n", __func__, message.event); if (PMSG_IS_AUTO(message)) { if (mutex_trylock(&ucr->dev_mutex)) { rtsx_usb_get_card_status(ucr, &val); mutex_unlock(&ucr->dev_mutex); /* Defer the autosuspend if card exists */ if (val & (SD_CD | MS_CD)) return -EAGAIN; } else { /* There is an ongoing operation*/ return -EAGAIN; } } return 0; } static int rtsx_usb_resume_child(struct device *dev, void *data) { pm_request_resume(dev); return 0; } static int rtsx_usb_resume(struct usb_interface *intf) { device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child); return 0; } static int rtsx_usb_reset_resume(struct usb_interface *intf) { struct rtsx_ucr *ucr = (struct rtsx_ucr *)usb_get_intfdata(intf); rtsx_usb_reset_chip(ucr); device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child); return 0; } #else /* CONFIG_PM */ #define rtsx_usb_suspend NULL #define rtsx_usb_resume NULL #define rtsx_usb_reset_resume NULL #endif /* CONFIG_PM */ static int rtsx_usb_pre_reset(struct usb_interface *intf) { struct rtsx_ucr *ucr = (struct rtsx_ucr *)usb_get_intfdata(intf); mutex_lock(&ucr->dev_mutex); return 0; } static int rtsx_usb_post_reset(struct usb_interface *intf) { struct rtsx_ucr *ucr = (struct rtsx_ucr *)usb_get_intfdata(intf); mutex_unlock(&ucr->dev_mutex); return 0; } static const struct usb_device_id rtsx_usb_usb_ids[] = { { USB_DEVICE(0x0BDA, 0x0129) }, { USB_DEVICE(0x0BDA, 0x0139) }, { USB_DEVICE(0x0BDA, 0x0140) }, { } }; MODULE_DEVICE_TABLE(usb, rtsx_usb_usb_ids); static struct usb_driver rtsx_usb_driver = { .name = "rtsx_usb", .probe = rtsx_usb_probe, .disconnect = rtsx_usb_disconnect, .suspend = rtsx_usb_suspend, .resume = rtsx_usb_resume, .reset_resume = rtsx_usb_reset_resume, .pre_reset = rtsx_usb_pre_reset, .post_reset = rtsx_usb_post_reset, .id_table = rtsx_usb_usb_ids, .supports_autosuspend = 1, .soft_unbind = 1, }; module_usb_driver(rtsx_usb_driver); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Roger Tseng "); MODULE_DESCRIPTION("Realtek USB Card Reader Driver");