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Commit f70d47c2 authored by Jeff Hugo's avatar Jeff Hugo
Browse files

msm: Remove smd_qmi 



The smd_qmi module is dead code.  Remove it.

Change-Id: I3b272100e5ba24b7e05f819438570d6302288e08
Signed-off-by: default avatarJeffrey Hugo <jhugo@codeaurora.org>
parent 60e6ad84

arch/arm/mach-msm/Kconfig

+0 −9
Original line number Diff line number Diff line
@@ -770,15 +770,6 @@ config MSM_SMD_TTY 


	  If in doubt, say yes.



config MSM_SMD_QMI

	bool "SMD QMI Driver"

	depends on MSM_SMD

	default y

	help

	  Manages network data connections.



	  If in doubt, say yes.



config MSM_SMD_PKT

	bool "SMD Packet Driver"

	depends on MSM_SMD

arch/arm/mach-msm/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -65,7 +65,6 @@ obj-$(CONFIG_MSM_IPC_LOGGING) += ipc_logging_debug.o 
endif

obj-y += socinfo.o

obj-$(CONFIG_MSM_SMD_TTY) += smd_tty.o

obj-$(CONFIG_MSM_SMD_QMI) += smd_qmi.o

obj-$(CONFIG_MSM_SMD_PKT) += smd_pkt.o

obj-$(CONFIG_MSM_SMD_NMEA) += smd_nmea.o

obj-$(CONFIG_MSM_RESET_MODEM) += reset_modem.o

arch/arm/mach-msm/smd_qmi.c

deleted100644 → 0
+0 −848
Original line number Diff line number Diff line 
/* arch/arm/mach-msm/smd_qmi.c

 *

 * QMI Control Driver -- Manages network data connections.

 *

 * Copyright (C) 2007 Google, Inc.

 * Author: Brian Swetland <swetland@google.com>

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and

 * may be copied, distributed, and modified under those terms.

 *

 * 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.

 *

 */



#include <linux/module.h>

#include <linux/fs.h>

#include <linux/cdev.h>

#include <linux/device.h>

#include <linux/sched.h>

#include <linux/wait.h>

#include <linux/miscdevice.h>

#include <linux/workqueue.h>

#include <linux/wakelock.h>



#include <asm/uaccess.h>

#include <mach/msm_smd.h>



#define QMI_CTL 0x00

#define QMI_WDS 0x01

#define QMI_DMS 0x02

#define QMI_NAS 0x03



#define QMI_RESULT_SUCCESS 0x0000

#define QMI_RESULT_FAILURE 0x0001



struct qmi_msg {

	unsigned char service;

	unsigned char client_id;

	unsigned short txn_id;

	unsigned short type;

	unsigned short size;

	unsigned char *tlv;

};



#define qmi_ctl_client_id 0



#define STATE_OFFLINE    0

#define STATE_QUERYING   1

#define STATE_ONLINE     2



struct qmi_ctxt {

	struct miscdevice misc;



	struct mutex lock;



	unsigned char ctl_txn_id;

	unsigned char wds_client_id;

	unsigned short wds_txn_id;



	unsigned wds_busy;

	unsigned wds_handle;

	unsigned state_dirty;

	unsigned state;



	unsigned char addr[4];

	unsigned char mask[4];

	unsigned char gateway[4];

	unsigned char dns1[4];

	unsigned char dns2[4];



	smd_channel_t *ch;

	const char *ch_name;

	struct wake_lock wake_lock;



	struct work_struct open_work;

	struct work_struct read_work;

};



static struct qmi_ctxt *qmi_minor_to_ctxt(unsigned n);



static void qmi_read_work(struct work_struct *ws);

static void qmi_open_work(struct work_struct *work);



void qmi_ctxt_init(struct qmi_ctxt *ctxt, unsigned n)

{

	mutex_init(&ctxt->lock);

	INIT_WORK(&ctxt->read_work, qmi_read_work);

	INIT_WORK(&ctxt->open_work, qmi_open_work);

	wake_lock_init(&ctxt->wake_lock, WAKE_LOCK_SUSPEND, ctxt->misc.name);

	ctxt->ctl_txn_id = 1;

	ctxt->wds_txn_id = 1;

	ctxt->wds_busy = 1;

	ctxt->state = STATE_OFFLINE;



}



static struct workqueue_struct *qmi_wq;



static int verbose = 0;



/* anyone waiting for a state change waits here */

static DECLARE_WAIT_QUEUE_HEAD(qmi_wait_queue);





static void qmi_dump_msg(struct qmi_msg *msg, const char *prefix)

{

	unsigned sz, n;

	unsigned char *x;



	if (!verbose)

		return;



	printk(KERN_INFO

	       "qmi: %s: svc=%02x cid=%02x tid=%04x type=%04x size=%04x\n",

	       prefix, msg->service, msg->client_id,

	       msg->txn_id, msg->type, msg->size);



	x = msg->tlv;

	sz = msg->size;



	while (sz >= 3) {

		sz -= 3;



		n = x[1] | (x[2] << 8);

		if (n > sz)

			break;



		printk(KERN_INFO "qmi: %s: tlv: %02x %04x { ",

		       prefix, x[0], n);

		x += 3;

		sz -= n;

		while (n-- > 0)

			printk("%02x ", *x++);

		printk("}\n");

	}

}



int qmi_add_tlv(struct qmi_msg *msg,

		unsigned type, unsigned size, const void *data)

{

	unsigned char *x = msg->tlv + msg->size;



	x[0] = type;

	x[1] = size;

	x[2] = size >> 8;



	memcpy(x + 3, data, size);



	msg->size += (size + 3);



	return 0;

}



/* Extract a tagged item from a qmi message buffer,

** taking care not to overrun the buffer.

*/

static int qmi_get_tlv(struct qmi_msg *msg,

		       unsigned type, unsigned size, void *data)

{

	unsigned char *x = msg->tlv;

	unsigned len = msg->size;

	unsigned n;



	while (len >= 3) {

		len -= 3;



		/* size of this item */

		n = x[1] | (x[2] << 8);

		if (n > len)

			break;



		if (x[0] == type) {

			if (n != size)

				return -1;

			memcpy(data, x + 3, size);

			return 0;

		}



		x += (n + 3);

		len -= n;

	}



	return -1;

}



static unsigned qmi_get_status(struct qmi_msg *msg, unsigned *error)

{

	unsigned short status[2];

	if (qmi_get_tlv(msg, 0x02, sizeof(status), status)) {

		*error = 0;

		return QMI_RESULT_FAILURE;

	} else {

		*error = status[1];

		return status[0];

	}

}



/* 0x01 <qmux-header> <payload> */

#define QMUX_HEADER    13



/* should be >= HEADER + FOOTER */

#define QMUX_OVERHEAD  16



static int qmi_send(struct qmi_ctxt *ctxt, struct qmi_msg *msg)

{

	unsigned char *data;

	unsigned hlen;

	unsigned len;

	int r;



	qmi_dump_msg(msg, "send");



	if (msg->service == QMI_CTL) {

		hlen = QMUX_HEADER - 1;

	} else {

		hlen = QMUX_HEADER;

	}



	/* QMUX length is total header + total payload - IFC selector */

	len = hlen + msg->size - 1;

	if (len > 0xffff)

		return -1;



	data = msg->tlv - hlen;



	/* prepend encap and qmux header */

	*data++ = 0x01; /* ifc selector */



	/* qmux header */

	*data++ = len;

	*data++ = len >> 8;

	*data++ = 0x00; /* flags: client */

	*data++ = msg->service;

	*data++ = msg->client_id;



	/* qmi header */

	*data++ = 0x00; /* flags: send */

	*data++ = msg->txn_id;

	if (msg->service != QMI_CTL)

		*data++ = msg->txn_id >> 8;



	*data++ = msg->type;

	*data++ = msg->type >> 8;

	*data++ = msg->size;

	*data++ = msg->size >> 8;



	/* len + 1 takes the interface selector into account */

	r = smd_write(ctxt->ch, msg->tlv - hlen, len + 1);



	if (r != len) {

		return -1;

	} else {

		return 0;

	}

}



static void qmi_process_ctl_msg(struct qmi_ctxt *ctxt, struct qmi_msg *msg)

{

	unsigned err;

	if (msg->type == 0x0022) {

		unsigned char n[2];

		if (qmi_get_status(msg, &err))

			return;

		if (qmi_get_tlv(msg, 0x01, sizeof(n), n))

			return;

		if (n[0] == QMI_WDS) {

			printk(KERN_INFO

			       "qmi: ctl: wds use client_id 0x%02x\n", n[1]);

			ctxt->wds_client_id = n[1];

			ctxt->wds_busy = 0;

		}

	}

}



static int qmi_network_get_profile(struct qmi_ctxt *ctxt);



static void swapaddr(unsigned char *src, unsigned char *dst)

{

	dst[0] = src[3];

	dst[1] = src[2];

	dst[2] = src[1];

	dst[3] = src[0];

}



static unsigned char zero[4];

static void qmi_read_runtime_profile(struct qmi_ctxt *ctxt, struct qmi_msg *msg)

{

	unsigned char tmp[4];

	unsigned r;



	r = qmi_get_tlv(msg, 0x1e, 4, tmp);

	swapaddr(r ? zero : tmp, ctxt->addr);

	r = qmi_get_tlv(msg, 0x21, 4, tmp);

	swapaddr(r ? zero : tmp, ctxt->mask);

	r = qmi_get_tlv(msg, 0x20, 4, tmp);

	swapaddr(r ? zero : tmp, ctxt->gateway);

	r = qmi_get_tlv(msg, 0x15, 4, tmp);

	swapaddr(r ? zero : tmp, ctxt->dns1);

	r = qmi_get_tlv(msg, 0x16, 4, tmp);

	swapaddr(r ? zero : tmp, ctxt->dns2);

}



static void qmi_process_unicast_wds_msg(struct qmi_ctxt *ctxt,

					struct qmi_msg *msg)

{

	unsigned err;

	switch (msg->type) {

	case 0x0021:

		if (qmi_get_status(msg, &err)) {

			printk(KERN_ERR

			       "qmi: wds: network stop failed (%04x)\n", err);

		} else {

			printk(KERN_INFO

			       "qmi: wds: network stopped\n");

			ctxt->state = STATE_OFFLINE;

			ctxt->state_dirty = 1;

		}

		break;

	case 0x0020:

		if (qmi_get_status(msg, &err)) {

			printk(KERN_ERR

			       "qmi: wds: network start failed (%04x)\n", err);

		} else if (qmi_get_tlv(msg, 0x01, sizeof(ctxt->wds_handle), &ctxt->wds_handle)) {

			printk(KERN_INFO

			       "qmi: wds no handle?\n");

		} else {

			printk(KERN_INFO

			       "qmi: wds: got handle 0x%08x\n",

			       ctxt->wds_handle);

		}

		break;

	case 0x002D:

		printk("qmi: got network profile\n");

		if (ctxt->state == STATE_QUERYING) {

			qmi_read_runtime_profile(ctxt, msg);

			ctxt->state = STATE_ONLINE;

			ctxt->state_dirty = 1;

		}

		break;

	default:

		printk(KERN_ERR "qmi: unknown msg type 0x%04x\n", msg->type);

	}

	ctxt->wds_busy = 0;

}



static void qmi_process_broadcast_wds_msg(struct qmi_ctxt *ctxt,

					  struct qmi_msg *msg)

{

	if (msg->type == 0x0022) {

		unsigned char n[2];

		if (qmi_get_tlv(msg, 0x01, sizeof(n), n))

			return;

		switch (n[0]) {

		case 1:

			printk(KERN_INFO "qmi: wds: DISCONNECTED\n");

			ctxt->state = STATE_OFFLINE;

			ctxt->state_dirty = 1;

			break;

		case 2:

			printk(KERN_INFO "qmi: wds: CONNECTED\n");

			ctxt->state = STATE_QUERYING;

			ctxt->state_dirty = 1;

			qmi_network_get_profile(ctxt);

			break;

		case 3:

			printk(KERN_INFO "qmi: wds: SUSPENDED\n");

			ctxt->state = STATE_OFFLINE;

			ctxt->state_dirty = 1;

		}

	} else {

		printk(KERN_ERR "qmi: unknown bcast msg type 0x%04x\n", msg->type);

	}

}



static void qmi_process_wds_msg(struct qmi_ctxt *ctxt,

				struct qmi_msg *msg)

{

	printk("wds: %04x @ %02x\n", msg->type, msg->client_id);

	if (msg->client_id == ctxt->wds_client_id) {

		qmi_process_unicast_wds_msg(ctxt, msg);

	} else if (msg->client_id == 0xff) {

		qmi_process_broadcast_wds_msg(ctxt, msg);

	} else {

		printk(KERN_ERR

		       "qmi_process_wds_msg client id 0x%02x unknown\n",

		       msg->client_id);

	}

}



static void qmi_process_qmux(struct qmi_ctxt *ctxt,

			     unsigned char *buf, unsigned sz)

{

	struct qmi_msg msg;



	/* require a full header */

	if (sz < 5)

		return;



	/* require a size that matches the buffer size */

	if (sz != (buf[0] | (buf[1] << 8)))

		return;



	/* only messages from a service (bit7=1) are allowed */

	if (buf[2] != 0x80)

		return;



	msg.service = buf[3];

	msg.client_id = buf[4];



	/* annoyingly, CTL messages have a shorter TID */

	if (buf[3] == 0) {

		if (sz < 7)

			return;

		msg.txn_id = buf[6];

		buf += 7;

		sz -= 7;

	} else {

		if (sz < 8)

			return;

		msg.txn_id = buf[6] | (buf[7] << 8);

		buf += 8;

		sz -= 8;

	}



	/* no type and size!? */

	if (sz < 4)

		return;

	sz -= 4;



	msg.type = buf[0] | (buf[1] << 8);

	msg.size = buf[2] | (buf[3] << 8);

	msg.tlv = buf + 4;



	if (sz != msg.size)

		return;



	qmi_dump_msg(&msg, "recv");



	mutex_lock(&ctxt->lock);

	switch (msg.service) {

	case QMI_CTL:

		qmi_process_ctl_msg(ctxt, &msg);

		break;

	case QMI_WDS:

		qmi_process_wds_msg(ctxt, &msg);

		break;

	default:

		printk(KERN_ERR "qmi: msg from unknown svc 0x%02x\n",

		       msg.service);

		break;

	}

	mutex_unlock(&ctxt->lock);



	wake_up(&qmi_wait_queue);

}



#define QMI_MAX_PACKET (256 + QMUX_OVERHEAD)



static void qmi_read_work(struct work_struct *ws)

{

	struct qmi_ctxt *ctxt = container_of(ws, struct qmi_ctxt, read_work);

	struct smd_channel *ch = ctxt->ch;

	unsigned char buf[QMI_MAX_PACKET];

	int sz;



	for (;;) {

		sz = smd_cur_packet_size(ch);

		if (sz == 0)

			break;

		if (sz < smd_read_avail(ch))

			break;

		if (sz > QMI_MAX_PACKET) {

			smd_read(ch, 0, sz);

			continue;

		}

		if (smd_read(ch, buf, sz) != sz) {

			printk(KERN_ERR "qmi: not enough data?!\n");

			continue;

		}



		/* interface selector must be 1 */

		if (buf[0] != 0x01)

			continue;



		qmi_process_qmux(ctxt, buf + 1, sz - 1);

	}

}



static int qmi_request_wds_cid(struct qmi_ctxt *ctxt);



static void qmi_open_work(struct work_struct *ws)

{

	struct qmi_ctxt *ctxt = container_of(ws, struct qmi_ctxt, open_work);

	mutex_lock(&ctxt->lock);

	qmi_request_wds_cid(ctxt);

	mutex_unlock(&ctxt->lock);

}



static void qmi_notify(void *priv, unsigned event)

{

	struct qmi_ctxt *ctxt = priv;

	

	switch (event) {

	case SMD_EVENT_DATA: {

		int sz;

		sz = smd_cur_packet_size(ctxt->ch);

		if ((sz > 0) && (sz <= smd_read_avail(ctxt->ch))) {

			wake_lock_timeout(&ctxt->wake_lock, HZ / 2);

			queue_work(qmi_wq, &ctxt->read_work);

		}

		break;

	}

	case SMD_EVENT_OPEN:

		printk(KERN_INFO "qmi: smd opened\n");

		queue_work(qmi_wq, &ctxt->open_work);

		break;

	case SMD_EVENT_CLOSE:

		printk(KERN_INFO "qmi: smd closed\n");

		break;

	}

}



static int qmi_request_wds_cid(struct qmi_ctxt *ctxt)

{

	unsigned char data[64 + QMUX_OVERHEAD];

	struct qmi_msg msg;

	unsigned char n;



	msg.service = QMI_CTL;

	msg.client_id = qmi_ctl_client_id;

	msg.txn_id = ctxt->ctl_txn_id;

	msg.type = 0x0022;

	msg.size = 0;

	msg.tlv = data + QMUX_HEADER;



	ctxt->ctl_txn_id += 2;



	n = QMI_WDS;

	qmi_add_tlv(&msg, 0x01, 0x01, &n);



	return qmi_send(ctxt, &msg);

}



static int qmi_network_get_profile(struct qmi_ctxt *ctxt)

{

	unsigned char data[96 + QMUX_OVERHEAD];

	struct qmi_msg msg;



	msg.service = QMI_WDS;

	msg.client_id = ctxt->wds_client_id;

	msg.txn_id = ctxt->wds_txn_id;

	msg.type = 0x002D;

	msg.size = 0;

	msg.tlv = data + QMUX_HEADER;



	ctxt->wds_txn_id += 2;



	return qmi_send(ctxt, &msg);

}



static int qmi_network_up(struct qmi_ctxt *ctxt, char *apn)

{

	unsigned char data[96 + QMUX_OVERHEAD];

	struct qmi_msg msg;

	char *user;

	char *pass;



	for (user = apn; *user; user++) {

		if (*user == ' ') {

			*user++ = 0;

			break;

		}

	}

	for (pass = user; *pass; pass++) {

		if (*pass == ' ') {

			*pass++ = 0;

			break;

		}

	}



	msg.service = QMI_WDS;

	msg.client_id = ctxt->wds_client_id;

	msg.txn_id = ctxt->wds_txn_id;

	msg.type = 0x0020;

	msg.size = 0;

	msg.tlv = data + QMUX_HEADER;



	ctxt->wds_txn_id += 2;



	qmi_add_tlv(&msg, 0x14, strlen(apn), apn);

	if (*user) {

		unsigned char x;

		x = 3;

		qmi_add_tlv(&msg, 0x16, 1, &x);

		qmi_add_tlv(&msg, 0x17, strlen(user), user);

		if (*pass)

			qmi_add_tlv(&msg, 0x18, strlen(pass), pass);

	}

	return qmi_send(ctxt, &msg);

}



static int qmi_network_down(struct qmi_ctxt *ctxt)

{

	unsigned char data[16 + QMUX_OVERHEAD];

	struct qmi_msg msg;



	msg.service = QMI_WDS;

	msg.client_id = ctxt->wds_client_id;

	msg.txn_id = ctxt->wds_txn_id;

	msg.type = 0x0021;

	msg.size = 0;

	msg.tlv = data + QMUX_HEADER;



	ctxt->wds_txn_id += 2;



	qmi_add_tlv(&msg, 0x01, sizeof(ctxt->wds_handle), &ctxt->wds_handle);



	return qmi_send(ctxt, &msg);

}



static int qmi_print_state(struct qmi_ctxt *ctxt, char *buf, int max)

{

	int i;

	char *statename;



	if (ctxt->state == STATE_ONLINE) {

		statename = "up";

	} else if (ctxt->state == STATE_OFFLINE) {

		statename = "down";

	} else {

		statename = "busy";

	}



	i = scnprintf(buf, max, "STATE=%s\n", statename);

	i += scnprintf(buf + i, max - i, "CID=%d\n",ctxt->wds_client_id);



	if (ctxt->state != STATE_ONLINE){

		return i;

	}



	i += scnprintf(buf + i, max - i, "ADDR=%d.%d.%d.%d\n",

		ctxt->addr[0], ctxt->addr[1], ctxt->addr[2], ctxt->addr[3]);

	i += scnprintf(buf + i, max - i, "MASK=%d.%d.%d.%d\n",

		ctxt->mask[0], ctxt->mask[1], ctxt->mask[2], ctxt->mask[3]);

	i += scnprintf(buf + i, max - i, "GATEWAY=%d.%d.%d.%d\n",

		ctxt->gateway[0], ctxt->gateway[1], ctxt->gateway[2],

		ctxt->gateway[3]);

	i += scnprintf(buf + i, max - i, "DNS1=%d.%d.%d.%d\n",

		ctxt->dns1[0], ctxt->dns1[1], ctxt->dns1[2], ctxt->dns1[3]);

	i += scnprintf(buf + i, max - i, "DNS2=%d.%d.%d.%d\n",

		ctxt->dns2[0], ctxt->dns2[1], ctxt->dns2[2], ctxt->dns2[3]);



	return i;

}



static ssize_t qmi_read(struct file *fp, char __user *buf,

			size_t count, loff_t *pos)

{

	struct qmi_ctxt *ctxt = fp->private_data;

	char msg[256];

	int len;

	int r;



	mutex_lock(&ctxt->lock);

	for (;;) {

		if (ctxt->state_dirty) {

			ctxt->state_dirty = 0;

			len = qmi_print_state(ctxt, msg, 256);

			break;

		}

		mutex_unlock(&ctxt->lock);

		r = wait_event_interruptible(qmi_wait_queue, ctxt->state_dirty);

		if (r < 0)

			return r;

		mutex_lock(&ctxt->lock);

	}

	mutex_unlock(&ctxt->lock);



	if (len > count)

		len = count;



	if (copy_to_user(buf, msg, len))

		return -EFAULT;



	return len;

}





static ssize_t qmi_write(struct file *fp, const char __user *buf,

			 size_t count, loff_t *pos)

{

	struct qmi_ctxt *ctxt = fp->private_data;

	unsigned char cmd[64];

	int len;

	int r;



	if (count < 1)

		return 0;



	len = count > 63 ? 63 : count;



	if (copy_from_user(cmd, buf, len))

		return -EFAULT;



	cmd[len] = 0;



	/* lazy */

	if (cmd[len-1] == '\n') {

		cmd[len-1] = 0;

		len--;

	}



	if (!strncmp(cmd, "verbose", 7)) {

		verbose = 1;

	} else if (!strncmp(cmd, "terse", 5)) {

		verbose = 0;

	} else if (!strncmp(cmd, "poll", 4)) {

		ctxt->state_dirty = 1;

		wake_up(&qmi_wait_queue);

	} else if (!strncmp(cmd, "down", 4)) {

retry_down:

		mutex_lock(&ctxt->lock);

		if (ctxt->wds_busy) {

			mutex_unlock(&ctxt->lock);

			r = wait_event_interruptible(qmi_wait_queue, !ctxt->wds_busy);

			if (r < 0)

				return r;

			goto retry_down;

		}

		ctxt->wds_busy = 1;

		qmi_network_down(ctxt);

		mutex_unlock(&ctxt->lock);

	} else if (!strncmp(cmd, "up:", 3)) {

retry_up:

		mutex_lock(&ctxt->lock);

		if (ctxt->wds_busy) {

			mutex_unlock(&ctxt->lock);

			r = wait_event_interruptible(qmi_wait_queue, !ctxt->wds_busy);

			if (r < 0)

				return r;

			goto retry_up;

		}

		ctxt->wds_busy = 1;

		qmi_network_up(ctxt, cmd+3);

		mutex_unlock(&ctxt->lock);

	} else {

		return -EINVAL;

	}



	return count;

}



static int qmi_open(struct inode *ip, struct file *fp)

{

	struct qmi_ctxt *ctxt = qmi_minor_to_ctxt(MINOR(ip->i_rdev));

	int r = 0;



	if (!ctxt) {

		printk(KERN_ERR "unknown qmi misc %d\n", MINOR(ip->i_rdev));

		return -ENODEV;

	}



	fp->private_data = ctxt;



	mutex_lock(&ctxt->lock);

	if (ctxt->ch == 0)

		r = smd_open(ctxt->ch_name, &ctxt->ch, ctxt, qmi_notify);

	if (r == 0)

		wake_up(&qmi_wait_queue);

	mutex_unlock(&ctxt->lock);



	return r;

}



static int qmi_release(struct inode *ip, struct file *fp)

{

	return 0;

}



static struct file_operations qmi_fops = {

	.owner = THIS_MODULE,

	.read = qmi_read,

	.write = qmi_write,

	.open = qmi_open,

	.release = qmi_release,

};



static struct qmi_ctxt qmi_device0 = {

	.ch_name = "SMD_DATA5_CNTL",

	.misc = {

		.minor = MISC_DYNAMIC_MINOR,

		.name = "qmi0",

		.fops = &qmi_fops,

	}

};

static struct qmi_ctxt qmi_device1 = {

	.ch_name = "SMD_DATA6_CNTL",

	.misc = {

		.minor = MISC_DYNAMIC_MINOR,

		.name = "qmi1",

		.fops = &qmi_fops,

	}

};

static struct qmi_ctxt qmi_device2 = {

	.ch_name = "SMD_DATA7_CNTL",

	.misc = {

		.minor = MISC_DYNAMIC_MINOR,

		.name = "qmi2",

		.fops = &qmi_fops,

	}

};



static struct qmi_ctxt *qmi_minor_to_ctxt(unsigned n)

{

	if (n == qmi_device0.misc.minor)

		return &qmi_device0;

	if (n == qmi_device1.misc.minor)

		return &qmi_device1;

	if (n == qmi_device2.misc.minor)

		return &qmi_device2;

	return 0;

}



static int __init qmi_init(void)

{

	int ret;



	qmi_wq = create_singlethread_workqueue("qmi");

	if (qmi_wq == 0)

		return -ENOMEM;



	qmi_ctxt_init(&qmi_device0, 0);

	qmi_ctxt_init(&qmi_device1, 1);

	qmi_ctxt_init(&qmi_device2, 2);



	ret = misc_register(&qmi_device0.misc);

	if (ret == 0)

		ret = misc_register(&qmi_device1.misc);

	if (ret == 0)

		ret = misc_register(&qmi_device2.misc);

	return ret;

}



module_init(qmi_init);