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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c')
-rw-r--r--ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c688
1 files changed, 0 insertions, 688 deletions
diff --git a/ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c b/ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c
deleted file mode 100644
index 7bafa72f..00000000
--- a/ANDROID_3.4.5/drivers/memstick/host/tifm_ms.c
+++ /dev/null
@@ -1,688 +0,0 @@
-/*
- * TI FlashMedia driver
- *
- * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
- *
- * 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.
- *
- * Special thanks to Carlos Corbacho for providing various MemoryStick cards
- * that made this driver possible.
- *
- */
-
-#include <linux/tifm.h>
-#include <linux/memstick.h>
-#include <linux/highmem.h>
-#include <linux/scatterlist.h>
-#include <linux/log2.h>
-#include <linux/module.h>
-#include <asm/io.h>
-
-#define DRIVER_NAME "tifm_ms"
-
-static bool no_dma;
-module_param(no_dma, bool, 0644);
-
-/*
- * Some control bits of TIFM appear to conform to Sony's reference design,
- * so I'm just assuming they all are.
- */
-
-#define TIFM_MS_STAT_DRQ 0x04000
-#define TIFM_MS_STAT_MSINT 0x02000
-#define TIFM_MS_STAT_RDY 0x01000
-#define TIFM_MS_STAT_CRC 0x00200
-#define TIFM_MS_STAT_TOE 0x00100
-#define TIFM_MS_STAT_EMP 0x00020
-#define TIFM_MS_STAT_FUL 0x00010
-#define TIFM_MS_STAT_CED 0x00008
-#define TIFM_MS_STAT_ERR 0x00004
-#define TIFM_MS_STAT_BRQ 0x00002
-#define TIFM_MS_STAT_CNK 0x00001
-
-#define TIFM_MS_SYS_DMA 0x10000
-#define TIFM_MS_SYS_RESET 0x08000
-#define TIFM_MS_SYS_SRAC 0x04000
-#define TIFM_MS_SYS_INTEN 0x02000
-#define TIFM_MS_SYS_NOCRC 0x01000
-#define TIFM_MS_SYS_INTCLR 0x00800
-#define TIFM_MS_SYS_MSIEN 0x00400
-#define TIFM_MS_SYS_FCLR 0x00200
-#define TIFM_MS_SYS_FDIR 0x00100
-#define TIFM_MS_SYS_DAM 0x00080
-#define TIFM_MS_SYS_DRM 0x00040
-#define TIFM_MS_SYS_DRQSL 0x00020
-#define TIFM_MS_SYS_REI 0x00010
-#define TIFM_MS_SYS_REO 0x00008
-#define TIFM_MS_SYS_BSY_MASK 0x00007
-
-#define TIFM_MS_SYS_FIFO (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \
- | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK)
-
-/* Hardware flags */
-enum {
- CMD_READY = 0x01,
- FIFO_READY = 0x02,
- CARD_INT = 0x04
-};
-
-struct tifm_ms {
- struct tifm_dev *dev;
- struct timer_list timer;
- struct memstick_request *req;
- struct tasklet_struct notify;
- unsigned int mode_mask;
- unsigned int block_pos;
- unsigned long timeout_jiffies;
- unsigned char eject:1,
- use_dma:1;
- unsigned char cmd_flags;
- unsigned char io_pos;
- unsigned int io_word;
-};
-
-static unsigned int tifm_ms_read_data(struct tifm_ms *host,
- unsigned char *buf, unsigned int length)
-{
- struct tifm_dev *sock = host->dev;
- unsigned int off = 0;
-
- while (host->io_pos && length) {
- buf[off++] = host->io_word & 0xff;
- host->io_word >>= 8;
- length--;
- host->io_pos--;
- }
-
- if (!length)
- return off;
-
- while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
- if (length < 4)
- break;
- *(unsigned int *)(buf + off) = __raw_readl(sock->addr
- + SOCK_MS_DATA);
- length -= 4;
- off += 4;
- }
-
- if (length
- && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
- host->io_word = readl(sock->addr + SOCK_MS_DATA);
- for (host->io_pos = 4; host->io_pos; --host->io_pos) {
- buf[off++] = host->io_word & 0xff;
- host->io_word >>= 8;
- length--;
- if (!length)
- break;
- }
- }
-
- return off;
-}
-
-static unsigned int tifm_ms_write_data(struct tifm_ms *host,
- unsigned char *buf, unsigned int length)
-{
- struct tifm_dev *sock = host->dev;
- unsigned int off = 0;
-
- if (host->io_pos) {
- while (host->io_pos < 4 && length) {
- host->io_word |= buf[off++] << (host->io_pos * 8);
- host->io_pos++;
- length--;
- }
- }
-
- if (host->io_pos == 4
- && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
- writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
- sock->addr + SOCK_MS_SYSTEM);
- writel(host->io_word, sock->addr + SOCK_MS_DATA);
- host->io_pos = 0;
- host->io_word = 0;
- } else if (host->io_pos) {
- return off;
- }
-
- if (!length)
- return off;
-
- while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
- if (length < 4)
- break;
- writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
- sock->addr + SOCK_MS_SYSTEM);
- __raw_writel(*(unsigned int *)(buf + off),
- sock->addr + SOCK_MS_DATA);
- length -= 4;
- off += 4;
- }
-
- switch (length) {
- case 3:
- host->io_word |= buf[off + 2] << 16;
- host->io_pos++;
- case 2:
- host->io_word |= buf[off + 1] << 8;
- host->io_pos++;
- case 1:
- host->io_word |= buf[off];
- host->io_pos++;
- }
-
- off += host->io_pos;
-
- return off;
-}
-
-static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
-{
- struct tifm_dev *sock = host->dev;
- unsigned int length;
- unsigned int off;
- unsigned int t_size, p_cnt;
- unsigned char *buf;
- struct page *pg;
- unsigned long flags = 0;
-
- if (host->req->long_data) {
- length = host->req->sg.length - host->block_pos;
- off = host->req->sg.offset + host->block_pos;
- } else {
- length = host->req->data_len - host->block_pos;
- off = 0;
- }
- dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
- host->block_pos);
-
- while (length) {
- unsigned int uninitialized_var(p_off);
-
- if (host->req->long_data) {
- pg = nth_page(sg_page(&host->req->sg),
- off >> PAGE_SHIFT);
- p_off = offset_in_page(off);
- p_cnt = PAGE_SIZE - p_off;
- p_cnt = min(p_cnt, length);
-
- local_irq_save(flags);
- buf = kmap_atomic(pg) + p_off;
- } else {
- buf = host->req->data + host->block_pos;
- p_cnt = host->req->data_len - host->block_pos;
- }
-
- t_size = host->req->data_dir == WRITE
- ? tifm_ms_write_data(host, buf, p_cnt)
- : tifm_ms_read_data(host, buf, p_cnt);
-
- if (host->req->long_data) {
- kunmap_atomic(buf - p_off);
- local_irq_restore(flags);
- }
-
- if (!t_size)
- break;
- host->block_pos += t_size;
- length -= t_size;
- off += t_size;
- }
-
- dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
- if (!length && (host->req->data_dir == WRITE)) {
- if (host->io_pos) {
- writel(TIFM_MS_SYS_FDIR
- | readl(sock->addr + SOCK_MS_SYSTEM),
- sock->addr + SOCK_MS_SYSTEM);
- writel(host->io_word, sock->addr + SOCK_MS_DATA);
- }
- writel(TIFM_MS_SYS_FDIR
- | readl(sock->addr + SOCK_MS_SYSTEM),
- sock->addr + SOCK_MS_SYSTEM);
- writel(0, sock->addr + SOCK_MS_DATA);
- } else {
- readl(sock->addr + SOCK_MS_DATA);
- }
-
- return length;
-}
-
-static int tifm_ms_issue_cmd(struct tifm_ms *host)
-{
- struct tifm_dev *sock = host->dev;
- unsigned char *data;
- unsigned int data_len, cmd, sys_param;
-
- host->cmd_flags = 0;
- host->block_pos = 0;
- host->io_pos = 0;
- host->io_word = 0;
- host->cmd_flags = 0;
-
- data = host->req->data;
-
- host->use_dma = !no_dma;
-
- if (host->req->long_data) {
- data_len = host->req->sg.length;
- if (!is_power_of_2(data_len))
- host->use_dma = 0;
- } else {
- data_len = host->req->data_len;
- host->use_dma = 0;
- }
-
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(TIFM_FIFO_ENABLE,
- sock->addr + SOCK_FIFO_CONTROL);
-
- if (host->use_dma) {
- if (1 != tifm_map_sg(sock, &host->req->sg, 1,
- host->req->data_dir == READ
- ? PCI_DMA_FROMDEVICE
- : PCI_DMA_TODEVICE)) {
- host->req->error = -ENOMEM;
- return host->req->error;
- }
- data_len = sg_dma_len(&host->req->sg);
-
- writel(ilog2(data_len) - 2,
- sock->addr + SOCK_FIFO_PAGE_SIZE);
- writel(TIFM_FIFO_INTMASK,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
- sys_param = TIFM_DMA_EN | (1 << 8);
- if (host->req->data_dir == WRITE)
- sys_param |= TIFM_DMA_TX;
-
- writel(TIFM_FIFO_INTMASK,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
-
- writel(sg_dma_address(&host->req->sg),
- sock->addr + SOCK_DMA_ADDRESS);
- writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
- } else {
- writel(host->mode_mask | TIFM_MS_SYS_FIFO,
- sock->addr + SOCK_MS_SYSTEM);
-
- writel(TIFM_FIFO_MORE,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
- }
-
- mod_timer(&host->timer, jiffies + host->timeout_jiffies);
- writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- host->req->error = 0;
-
- sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
- sys_param |= TIFM_MS_SYS_INTCLR;
-
- if (host->use_dma)
- sys_param |= TIFM_MS_SYS_DMA;
- else
- sys_param &= ~TIFM_MS_SYS_DMA;
-
- writel(sys_param, sock->addr + SOCK_MS_SYSTEM);
-
- cmd = (host->req->tpc & 0xf) << 12;
- cmd |= data_len;
- writel(cmd, sock->addr + SOCK_MS_COMMAND);
-
- dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
- return 0;
-}
-
-static void tifm_ms_complete_cmd(struct tifm_ms *host)
-{
- struct tifm_dev *sock = host->dev;
- struct memstick_host *msh = tifm_get_drvdata(sock);
- int rc;
-
- del_timer(&host->timer);
-
- host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
- host->req->int_reg = (host->req->int_reg & 1)
- | ((host->req->int_reg << 4) & 0xe0);
-
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
-
- if (host->use_dma) {
- tifm_unmap_sg(sock, &host->req->sg, 1,
- host->req->data_dir == READ
- ? PCI_DMA_FROMDEVICE
- : PCI_DMA_TODEVICE);
- }
-
- writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
-
- dev_dbg(&sock->dev, "TPC complete\n");
- do {
- rc = memstick_next_req(msh, &host->req);
- } while (!rc && tifm_ms_issue_cmd(host));
-}
-
-static int tifm_ms_check_status(struct tifm_ms *host)
-{
- if (!host->req->error) {
- if (!(host->cmd_flags & CMD_READY))
- return 1;
- if (!(host->cmd_flags & FIFO_READY))
- return 1;
- if (host->req->need_card_int
- && !(host->cmd_flags & CARD_INT))
- return 1;
- }
- return 0;
-}
-
-/* Called from interrupt handler */
-static void tifm_ms_data_event(struct tifm_dev *sock)
-{
- struct tifm_ms *host;
- unsigned int fifo_status = 0, host_status = 0;
- int rc = 1;
-
- spin_lock(&sock->lock);
- host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
- fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
- host_status = readl(sock->addr + SOCK_MS_STATUS);
- dev_dbg(&sock->dev,
- "data event: fifo_status %x, host_status %x, flags %x\n",
- fifo_status, host_status, host->cmd_flags);
-
- if (host->req) {
- if (host->use_dma && (fifo_status & 1)) {
- host->cmd_flags |= FIFO_READY;
- rc = tifm_ms_check_status(host);
- }
- if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
- if (!tifm_ms_transfer_data(host)) {
- host->cmd_flags |= FIFO_READY;
- rc = tifm_ms_check_status(host);
- }
- }
- }
-
- writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
- if (!rc)
- tifm_ms_complete_cmd(host);
-
- spin_unlock(&sock->lock);
-}
-
-
-/* Called from interrupt handler */
-static void tifm_ms_card_event(struct tifm_dev *sock)
-{
- struct tifm_ms *host;
- unsigned int host_status = 0;
- int rc = 1;
-
- spin_lock(&sock->lock);
- host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
- host_status = readl(sock->addr + SOCK_MS_STATUS);
- dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
- host_status, host->cmd_flags);
-
- if (host->req) {
- if (host_status & TIFM_MS_STAT_TOE)
- host->req->error = -ETIME;
- else if (host_status & TIFM_MS_STAT_CRC)
- host->req->error = -EILSEQ;
-
- if (host_status & TIFM_MS_STAT_RDY)
- host->cmd_flags |= CMD_READY;
-
- if (host_status & TIFM_MS_STAT_MSINT)
- host->cmd_flags |= CARD_INT;
-
- rc = tifm_ms_check_status(host);
-
- }
-
- writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM),
- sock->addr + SOCK_MS_SYSTEM);
-
- if (!rc)
- tifm_ms_complete_cmd(host);
-
- spin_unlock(&sock->lock);
- return;
-}
-
-static void tifm_ms_req_tasklet(unsigned long data)
-{
- struct memstick_host *msh = (struct memstick_host *)data;
- struct tifm_ms *host = memstick_priv(msh);
- struct tifm_dev *sock = host->dev;
- unsigned long flags;
- int rc;
-
- spin_lock_irqsave(&sock->lock, flags);
- if (!host->req) {
- if (host->eject) {
- do {
- rc = memstick_next_req(msh, &host->req);
- if (!rc)
- host->req->error = -ETIME;
- } while (!rc);
- spin_unlock_irqrestore(&sock->lock, flags);
- return;
- }
-
- do {
- rc = memstick_next_req(msh, &host->req);
- } while (!rc && tifm_ms_issue_cmd(host));
- }
- spin_unlock_irqrestore(&sock->lock, flags);
-}
-
-static void tifm_ms_dummy_submit(struct memstick_host *msh)
-{
- return;
-}
-
-static void tifm_ms_submit_req(struct memstick_host *msh)
-{
- struct tifm_ms *host = memstick_priv(msh);
-
- tasklet_schedule(&host->notify);
-}
-
-static int tifm_ms_set_param(struct memstick_host *msh,
- enum memstick_param param,
- int value)
-{
- struct tifm_ms *host = memstick_priv(msh);
- struct tifm_dev *sock = host->dev;
-
- switch (param) {
- case MEMSTICK_POWER:
- /* also affected by media detection mechanism */
- if (value == MEMSTICK_POWER_ON) {
- host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
- writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
- writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
- sock->addr + SOCK_MS_SYSTEM);
- writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
- } else if (value == MEMSTICK_POWER_OFF) {
- writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
- sock->addr + SOCK_MS_SYSTEM);
- writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
- } else
- return -EINVAL;
- break;
- case MEMSTICK_INTERFACE:
- if (value == MEMSTICK_SERIAL) {
- host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
- writel((~TIFM_CTRL_FAST_CLK)
- & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- } else if (value == MEMSTICK_PAR4) {
- host->mode_mask = 0;
- writel(TIFM_CTRL_FAST_CLK
- | readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- } else
- return -EINVAL;
- break;
- };
-
- return 0;
-}
-
-static void tifm_ms_abort(unsigned long data)
-{
- struct tifm_ms *host = (struct tifm_ms *)data;
-
- dev_dbg(&host->dev->dev, "status %x\n",
- readl(host->dev->addr + SOCK_MS_STATUS));
- printk(KERN_ERR
- "%s : card failed to respond for a long period of time "
- "(%x, %x)\n",
- dev_name(&host->dev->dev), host->req ? host->req->tpc : 0,
- host->cmd_flags);
-
- tifm_eject(host->dev);
-}
-
-static int tifm_ms_probe(struct tifm_dev *sock)
-{
- struct memstick_host *msh;
- struct tifm_ms *host;
- int rc = -EIO;
-
- if (!(TIFM_SOCK_STATE_OCCUPIED
- & readl(sock->addr + SOCK_PRESENT_STATE))) {
- printk(KERN_WARNING "%s : card gone, unexpectedly\n",
- dev_name(&sock->dev));
- return rc;
- }
-
- msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
- if (!msh)
- return -ENOMEM;
-
- host = memstick_priv(msh);
- tifm_set_drvdata(sock, msh);
- host->dev = sock;
- host->timeout_jiffies = msecs_to_jiffies(1000);
-
- setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);
- tasklet_init(&host->notify, tifm_ms_req_tasklet, (unsigned long)msh);
-
- msh->request = tifm_ms_submit_req;
- msh->set_param = tifm_ms_set_param;
- sock->card_event = tifm_ms_card_event;
- sock->data_event = tifm_ms_data_event;
- if (tifm_has_ms_pif(sock))
- msh->caps |= MEMSTICK_CAP_PAR4;
-
- rc = memstick_add_host(msh);
- if (!rc)
- return 0;
-
- memstick_free_host(msh);
- return rc;
-}
-
-static void tifm_ms_remove(struct tifm_dev *sock)
-{
- struct memstick_host *msh = tifm_get_drvdata(sock);
- struct tifm_ms *host = memstick_priv(msh);
- int rc = 0;
- unsigned long flags;
-
- msh->request = tifm_ms_dummy_submit;
- tasklet_kill(&host->notify);
- spin_lock_irqsave(&sock->lock, flags);
- host->eject = 1;
- if (host->req) {
- del_timer(&host->timer);
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
- if (host->use_dma)
- tifm_unmap_sg(sock, &host->req->sg, 1,
- host->req->data_dir == READ
- ? PCI_DMA_TODEVICE
- : PCI_DMA_FROMDEVICE);
- host->req->error = -ETIME;
-
- do {
- rc = memstick_next_req(msh, &host->req);
- if (!rc)
- host->req->error = -ETIME;
- } while (!rc);
- }
- spin_unlock_irqrestore(&sock->lock, flags);
-
- memstick_remove_host(msh);
- memstick_free_host(msh);
-}
-
-#ifdef CONFIG_PM
-
-static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
-{
- struct memstick_host *msh = tifm_get_drvdata(sock);
-
- memstick_suspend_host(msh);
- return 0;
-}
-
-static int tifm_ms_resume(struct tifm_dev *sock)
-{
- struct memstick_host *msh = tifm_get_drvdata(sock);
-
- memstick_resume_host(msh);
- return 0;
-}
-
-#else
-
-#define tifm_ms_suspend NULL
-#define tifm_ms_resume NULL
-
-#endif /* CONFIG_PM */
-
-static struct tifm_device_id tifm_ms_id_tbl[] = {
- { TIFM_TYPE_MS }, { 0 }
-};
-
-static struct tifm_driver tifm_ms_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE
- },
- .id_table = tifm_ms_id_tbl,
- .probe = tifm_ms_probe,
- .remove = tifm_ms_remove,
- .suspend = tifm_ms_suspend,
- .resume = tifm_ms_resume
-};
-
-static int __init tifm_ms_init(void)
-{
- return tifm_register_driver(&tifm_ms_driver);
-}
-
-static void __exit tifm_ms_exit(void)
-{
- tifm_unregister_driver(&tifm_ms_driver);
-}
-
-MODULE_AUTHOR("Alex Dubov");
-MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);
-
-module_init(tifm_ms_init);
-module_exit(tifm_ms_exit);