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authorWei WANG <wei_wang@realsil.com.cn>2012-11-09 20:53:35 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-11-15 17:30:14 -0800
commitb902dd4ecc2cccdd6c033ba5d959d4d6606e55fb (patch)
tree6cbfcd40f223fdcf0c7c348bfc309e3177838231 /drivers/memstick
parent2c94b6452cc6de582584f21066cc5e36d9530c59 (diff)
drivers/memstick: Add realtek pcie memstick host driver
Realtek PCI-E Memstick card host driver is used to access Memstick card, with the help of Realtek PCI-E card reader MFD driver. Signed-off-by: Wei WANG <wei_wang@realsil.com.cn> Acked-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/memstick')
-rw-r--r--drivers/memstick/host/Kconfig10
-rw-r--r--drivers/memstick/host/Makefile1
-rw-r--r--drivers/memstick/host/rtsx_pci_ms.c641
3 files changed, 652 insertions, 0 deletions
diff --git a/drivers/memstick/host/Kconfig b/drivers/memstick/host/Kconfig
index cc0997a05171..4f7a17fd1aa7 100644
--- a/drivers/memstick/host/Kconfig
+++ b/drivers/memstick/host/Kconfig
@@ -42,3 +42,13 @@ config MEMSTICK_R592
To compile this driver as a module, choose M here: the module will
be called r592.
+
+config MEMSTICK_REALTEK_PCI
+ tristate "Realtek PCI-E Memstick Card Interface Driver"
+ depends on MFD_RTSX_PCI
+ help
+ Say Y here to include driver code to support Memstick card interface
+ of Realtek PCI-E card reader
+
+ To compile this driver as a module, choose M here: the module will
+ be called rtsx_pci_ms.
diff --git a/drivers/memstick/host/Makefile b/drivers/memstick/host/Makefile
index 31ba8d378e46..af3459d7686e 100644
--- a/drivers/memstick/host/Makefile
+++ b/drivers/memstick/host/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_MEMSTICK_TIFM_MS) += tifm_ms.o
obj-$(CONFIG_MEMSTICK_JMICRON_38X) += jmb38x_ms.o
obj-$(CONFIG_MEMSTICK_R592) += r592.o
+obj-$(CONFIG_MEMSTICK_REALTEK_PCI) += rtsx_pci_ms.o
diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c
new file mode 100644
index 000000000000..f5ddb82dadb7
--- /dev/null
+++ b/drivers/memstick/host/rtsx_pci_ms.c
@@ -0,0 +1,641 @@
+/* Realtek PCI-Express Memstick Card Interface driver
+ *
+ * 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:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
+ */
+
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/memstick.h>
+#include <linux/mfd/rtsx_pci.h>
+#include <asm/unaligned.h>
+
+struct realtek_pci_ms {
+ struct platform_device *pdev;
+ struct rtsx_pcr *pcr;
+ struct memstick_host *msh;
+ struct memstick_request *req;
+
+ struct mutex host_mutex;
+ struct work_struct handle_req;
+
+ u8 ssc_depth;
+ unsigned int clock;
+ unsigned char ifmode;
+ bool eject;
+};
+
+static inline struct device *ms_dev(struct realtek_pci_ms *host)
+{
+ return &(host->pdev->dev);
+}
+
+static inline void ms_clear_error(struct realtek_pci_ms *host)
+{
+ rtsx_pci_write_register(host->pcr, CARD_STOP,
+ MS_STOP | MS_CLR_ERR, MS_STOP | MS_CLR_ERR);
+}
+
+#ifdef DEBUG
+
+static void ms_print_debug_regs(struct realtek_pci_ms *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ u16 i;
+ u8 *ptr;
+
+ /* Print MS host internal registers */
+ rtsx_pci_init_cmd(pcr);
+ for (i = 0xFD40; i <= 0xFD44; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
+ for (i = 0xFD52; i <= 0xFD69; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
+ rtsx_pci_send_cmd(pcr, 100);
+
+ ptr = rtsx_pci_get_cmd_data(pcr);
+ for (i = 0xFD40; i <= 0xFD44; i++)
+ dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
+ for (i = 0xFD52; i <= 0xFD69; i++)
+ dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
+}
+
+#else
+
+#define ms_print_debug_regs(host)
+
+#endif
+
+static int ms_power_on(struct realtek_pci_ms *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, MS_MOD_SEL);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE,
+ CARD_SHARE_MASK, CARD_SHARE_48_MS);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN,
+ MS_CLK_EN, MS_CLK_EN);
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ err = rtsx_pci_card_pull_ctl_enable(pcr, RTSX_MS_CARD);
+ if (err < 0)
+ return err;
+
+ err = rtsx_pci_card_power_on(pcr, RTSX_MS_CARD);
+ if (err < 0)
+ return err;
+
+ /* Wait ms power stable */
+ msleep(150);
+
+ err = rtsx_pci_write_register(pcr, CARD_OE,
+ MS_OUTPUT_EN, MS_OUTPUT_EN);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int ms_power_off(struct realtek_pci_ms *host)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, MS_CLK_EN, 0);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE, MS_OUTPUT_EN, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ err = rtsx_pci_card_power_off(pcr, RTSX_MS_CARD);
+ if (err < 0)
+ return err;
+
+ return rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD);
+}
+
+static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir,
+ u8 tpc, u8 cfg, struct scatterlist *sg)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err;
+ unsigned int length = sg->length;
+ u16 sec_cnt = (u16)(length / 512);
+ u8 val, trans_mode, dma_dir;
+
+ dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n",
+ __func__, tpc, (data_dir == READ) ? "READ" : "WRITE",
+ length);
+
+ if (data_dir == READ) {
+ dma_dir = DMA_DIR_FROM_CARD;
+ trans_mode = MS_TM_AUTO_READ;
+ } else {
+ dma_dir = DMA_DIR_TO_CARD;
+ trans_mode = MS_TM_AUTO_WRITE;
+ }
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_H,
+ 0xFF, (u8)(sec_cnt >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_L,
+ 0xFF, (u8)sec_cnt);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
+ DMA_DONE_INT, DMA_DONE_INT);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(length >> 24));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(length >> 16));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(length >> 8));
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)length);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL,
+ 0x03 | DMA_PACK_SIZE_MASK, dma_dir | DMA_EN | DMA_512);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
+ 0x01, RING_BUFFER);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER,
+ 0xFF, MS_TRANSFER_START | trans_mode);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER,
+ MS_TRANSFER_END, MS_TRANSFER_END);
+
+ rtsx_pci_send_cmd_no_wait(pcr);
+
+ err = rtsx_pci_transfer_data(pcr, sg, 1, data_dir == READ, 10000);
+ if (err < 0) {
+ ms_clear_error(host);
+ return err;
+ }
+
+ rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val);
+ if (val & (MS_INT_CMDNK | MS_INT_ERR | MS_CRC16_ERR | MS_RDY_TIMEOUT))
+ return -EIO;
+
+ return 0;
+}
+
+static int ms_write_bytes(struct realtek_pci_ms *host, u8 tpc,
+ u8 cfg, u8 cnt, u8 *data, u8 *int_reg)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err, i;
+
+ dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc);
+
+ if (!data)
+ return -EINVAL;
+
+ rtsx_pci_init_cmd(pcr);
+
+ for (i = 0; i < cnt; i++)
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ PPBUF_BASE2 + i, 0xFF, data[i]);
+ if (cnt % 2)
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+ PPBUF_BASE2 + i, 0xFF, 0xFF);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
+ 0x01, PINGPONG_BUFFER);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER,
+ 0xFF, MS_TRANSFER_START | MS_TM_WRITE_BYTES);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER,
+ MS_TRANSFER_END, MS_TRANSFER_END);
+ if (int_reg)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 5000);
+ if (err < 0) {
+ u8 val;
+
+ rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val);
+ dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val);
+
+ if (int_reg)
+ *int_reg = val & 0x0F;
+
+ ms_print_debug_regs(host);
+
+ ms_clear_error(host);
+
+ if (!(tpc & 0x08)) {
+ if (val & MS_CRC16_ERR)
+ return -EIO;
+ } else {
+ if (!(val & 0x80)) {
+ if (val & (MS_INT_ERR | MS_INT_CMDNK))
+ return -EIO;
+ }
+ }
+
+ return -ETIMEDOUT;
+ }
+
+ if (int_reg) {
+ u8 *ptr = rtsx_pci_get_cmd_data(pcr) + 1;
+ *int_reg = *ptr & 0x0F;
+ }
+
+ return 0;
+}
+
+static int ms_read_bytes(struct realtek_pci_ms *host, u8 tpc,
+ u8 cfg, u8 cnt, u8 *data, u8 *int_reg)
+{
+ struct rtsx_pcr *pcr = host->pcr;
+ int err, i;
+ u8 *ptr;
+
+ dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc);
+
+ if (!data)
+ return -EINVAL;
+
+ rtsx_pci_init_cmd(pcr);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
+ 0x01, PINGPONG_BUFFER);
+
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER,
+ 0xFF, MS_TRANSFER_START | MS_TM_READ_BYTES);
+ rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER,
+ MS_TRANSFER_END, MS_TRANSFER_END);
+ for (i = 0; i < cnt - 1; i++)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + i, 0, 0);
+ if (cnt % 2)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + cnt, 0, 0);
+ else
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD,
+ PPBUF_BASE2 + cnt - 1, 0, 0);
+ if (int_reg)
+ rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0);
+
+ err = rtsx_pci_send_cmd(pcr, 5000);
+ if (err < 0) {
+ u8 val;
+
+ rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val);
+ dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val);
+
+ if (int_reg)
+ *int_reg = val & 0x0F;
+
+ ms_print_debug_regs(host);
+
+ ms_clear_error(host);
+
+ if (!(tpc & 0x08)) {
+ if (val & MS_CRC16_ERR)
+ return -EIO;
+ } else {
+ if (!(val & 0x80)) {
+ if (val & (MS_INT_ERR | MS_INT_CMDNK))
+ return -EIO;
+ }
+ }
+
+ return -ETIMEDOUT;
+ }
+
+ ptr = rtsx_pci_get_cmd_data(pcr) + 1;
+ for (i = 0; i < cnt; i++)
+ data[i] = *ptr++;
+
+ if (int_reg)
+ *int_reg = *ptr & 0x0F;
+
+ return 0;
+}
+
+static int rtsx_pci_ms_issue_cmd(struct realtek_pci_ms *host)
+{
+ struct memstick_request *req = host->req;
+ int err = 0;
+ u8 cfg = 0, int_reg;
+
+ dev_dbg(ms_dev(host), "%s\n", __func__);
+
+ if (req->need_card_int) {
+ if (host->ifmode != MEMSTICK_SERIAL)
+ cfg = WAIT_INT;
+ }
+
+ if (req->long_data) {
+ err = ms_transfer_data(host, req->data_dir,
+ req->tpc, cfg, &(req->sg));
+ } else {
+ if (req->data_dir == READ) {
+ err = ms_read_bytes(host, req->tpc, cfg,
+ req->data_len, req->data, &int_reg);
+ } else {
+ err = ms_write_bytes(host, req->tpc, cfg,
+ req->data_len, req->data, &int_reg);
+ }
+ }
+ if (err < 0)
+ return err;
+
+ if (req->need_card_int && (host->ifmode == MEMSTICK_SERIAL)) {
+ err = ms_read_bytes(host, MS_TPC_GET_INT,
+ NO_WAIT_INT, 1, &int_reg, NULL);
+ if (err < 0)
+ return err;
+ }
+
+ if (req->need_card_int) {
+ dev_dbg(ms_dev(host), "int_reg: 0x%02x\n", int_reg);
+
+ if (int_reg & MS_INT_CMDNK)
+ req->int_reg |= MEMSTICK_INT_CMDNAK;
+ if (int_reg & MS_INT_BREQ)
+ req->int_reg |= MEMSTICK_INT_BREQ;
+ if (int_reg & MS_INT_ERR)
+ req->int_reg |= MEMSTICK_INT_ERR;
+ if (int_reg & MS_INT_CED)
+ req->int_reg |= MEMSTICK_INT_CED;
+ }
+
+ return 0;
+}
+
+static void rtsx_pci_ms_handle_req(struct work_struct *work)
+{
+ struct realtek_pci_ms *host = container_of(work,
+ struct realtek_pci_ms, handle_req);
+ struct rtsx_pcr *pcr = host->pcr;
+ struct memstick_host *msh = host->msh;
+ int rc;
+
+ mutex_lock(&pcr->pcr_mutex);
+
+ rtsx_pci_start_run(pcr);
+
+ rtsx_pci_switch_clock(host->pcr, host->clock, host->ssc_depth,
+ false, true, false);
+ rtsx_pci_write_register(pcr, CARD_SELECT, 0x07, MS_MOD_SEL);
+ rtsx_pci_write_register(pcr, CARD_SHARE_MODE,
+ CARD_SHARE_MASK, CARD_SHARE_48_MS);
+
+ if (!host->req) {
+ do {
+ rc = memstick_next_req(msh, &host->req);
+ dev_dbg(ms_dev(host), "next req %d\n", rc);
+
+ if (!rc)
+ host->req->error = rtsx_pci_ms_issue_cmd(host);
+ } while (!rc);
+ }
+
+ mutex_unlock(&pcr->pcr_mutex);
+}
+
+static void rtsx_pci_ms_request(struct memstick_host *msh)
+{
+ struct realtek_pci_ms *host = memstick_priv(msh);
+
+ dev_dbg(ms_dev(host), "--> %s\n", __func__);
+
+ schedule_work(&host->handle_req);
+}
+
+static int rtsx_pci_ms_set_param(struct memstick_host *msh,
+ enum memstick_param param, int value)
+{
+ struct realtek_pci_ms *host = memstick_priv(msh);
+ struct rtsx_pcr *pcr = host->pcr;
+ unsigned int clock = 0;
+ u8 ssc_depth = 0;
+ int err;
+
+ dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n",
+ __func__, param, value);
+
+ switch (param) {
+ case MEMSTICK_POWER:
+ if (value == MEMSTICK_POWER_ON)
+ err = ms_power_on(host);
+ else if (value == MEMSTICK_POWER_OFF)
+ err = ms_power_off(host);
+ else
+ return -EINVAL;
+ break;
+
+ case MEMSTICK_INTERFACE:
+ if (value == MEMSTICK_SERIAL) {
+ clock = 19000000;
+ ssc_depth = RTSX_SSC_DEPTH_500K;
+
+ err = rtsx_pci_write_register(pcr, MS_CFG,
+ 0x18, MS_BUS_WIDTH_1);
+ if (err < 0)
+ return err;
+ } else if (value == MEMSTICK_PAR4) {
+ clock = 39000000;
+ ssc_depth = RTSX_SSC_DEPTH_1M;
+
+ err = rtsx_pci_write_register(pcr, MS_CFG,
+ 0x58, MS_BUS_WIDTH_4 | PUSH_TIME_ODD);
+ if (err < 0)
+ return err;
+ } else {
+ return -EINVAL;
+ }
+
+ err = rtsx_pci_switch_clock(pcr, clock,
+ ssc_depth, false, true, false);
+ if (err < 0)
+ return err;
+
+ host->ssc_depth = ssc_depth;
+ host->clock = clock;
+ host->ifmode = value;
+ break;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int rtsx_pci_ms_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct realtek_pci_ms *host = platform_get_drvdata(pdev);
+ struct memstick_host *msh = host->msh;
+
+ dev_dbg(ms_dev(host), "--> %s\n", __func__);
+
+ memstick_suspend_host(msh);
+ return 0;
+}
+
+static int rtsx_pci_ms_resume(struct platform_device *pdev)
+{
+ struct realtek_pci_ms *host = platform_get_drvdata(pdev);
+ struct memstick_host *msh = host->msh;
+
+ dev_dbg(ms_dev(host), "--> %s\n", __func__);
+
+ memstick_resume_host(msh);
+ return 0;
+}
+
+#else /* CONFIG_PM */
+
+#define rtsx_pci_ms_suspend NULL
+#define rtsx_pci_ms_resume NULL
+
+#endif /* CONFIG_PM */
+
+static void rtsx_pci_ms_card_event(struct platform_device *pdev)
+{
+ struct realtek_pci_ms *host = platform_get_drvdata(pdev);
+
+ memstick_detect_change(host->msh);
+}
+
+static int rtsx_pci_ms_drv_probe(struct platform_device *pdev)
+{
+ struct memstick_host *msh;
+ struct realtek_pci_ms *host;
+ struct rtsx_pcr *pcr;
+ struct pcr_handle *handle = pdev->dev.platform_data;
+ int rc;
+
+ if (!handle)
+ return -ENXIO;
+
+ pcr = handle->pcr;
+ if (!pcr)
+ return -ENXIO;
+
+ dev_dbg(&(pdev->dev),
+ ": Realtek PCI-E Memstick controller found\n");
+
+ msh = memstick_alloc_host(sizeof(*host), &pdev->dev);
+ if (!msh)
+ return -ENOMEM;
+
+ host = memstick_priv(msh);
+ host->pcr = pcr;
+ host->msh = msh;
+ host->pdev = pdev;
+ platform_set_drvdata(pdev, host);
+ pcr->slots[RTSX_MS_CARD].p_dev = pdev;
+ pcr->slots[RTSX_MS_CARD].card_event = rtsx_pci_ms_card_event;
+
+ mutex_init(&host->host_mutex);
+
+ INIT_WORK(&host->handle_req, rtsx_pci_ms_handle_req);
+ msh->request = rtsx_pci_ms_request;
+ msh->set_param = rtsx_pci_ms_set_param;
+ msh->caps = MEMSTICK_CAP_PAR4;
+
+ rc = memstick_add_host(msh);
+ if (rc) {
+ memstick_free_host(msh);
+ return rc;
+ }
+
+ return 0;
+}
+
+static int rtsx_pci_ms_drv_remove(struct platform_device *pdev)
+{
+ struct realtek_pci_ms *host = platform_get_drvdata(pdev);
+ struct rtsx_pcr *pcr;
+ struct memstick_host *msh;
+ int rc;
+
+ if (!host)
+ return 0;
+
+ pcr = host->pcr;
+ pcr->slots[RTSX_MS_CARD].p_dev = NULL;
+ pcr->slots[RTSX_MS_CARD].card_event = NULL;
+ msh = host->msh;
+ host->eject = true;
+
+ mutex_lock(&host->host_mutex);
+ if (host->req) {
+ dev_dbg(&(pdev->dev),
+ "%s: Controller removed during transfer\n",
+ dev_name(&msh->dev));
+
+ rtsx_pci_complete_unfinished_transfer(pcr);
+
+ host->req->error = -ENOMEDIUM;
+ do {
+ rc = memstick_next_req(msh, &host->req);
+ if (!rc)
+ host->req->error = -ENOMEDIUM;
+ } while (!rc);
+ }
+ mutex_unlock(&host->host_mutex);
+
+ memstick_remove_host(msh);
+ memstick_free_host(msh);
+
+ platform_set_drvdata(pdev, NULL);
+
+ dev_dbg(&(pdev->dev),
+ ": Realtek PCI-E Memstick controller has been removed\n");
+
+ return 0;
+}
+
+static struct platform_device_id rtsx_pci_ms_ids[] = {
+ {
+ .name = DRV_NAME_RTSX_PCI_MS,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(platform, rtsx_pci_ms_ids);
+
+static struct platform_driver rtsx_pci_ms_driver = {
+ .probe = rtsx_pci_ms_drv_probe,
+ .remove = rtsx_pci_ms_drv_remove,
+ .id_table = rtsx_pci_ms_ids,
+ .suspend = rtsx_pci_ms_suspend,
+ .resume = rtsx_pci_ms_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRV_NAME_RTSX_PCI_MS,
+ },
+};
+module_platform_driver(rtsx_pci_ms_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>");
+MODULE_DESCRIPTION("Realtek PCI-E Memstick Card Host Driver");

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