drivers/net/irda/ma600.c - kernel/msm-4.9 - Gitiles

 /*********************************************************************
  *
  * Filename:      ma600.c
  * Version:       0.1
  * Description:   Implementation of the MA600 dongle
  * Status:        Experimental.
  * Author:        Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95
  * Created at:    Sat Jun 10 20:02:35 2000
  * Modified at:
  * Modified by:
  *
  * Note: very thanks to Mr. Maru Wang <maru@mobileaction.com.tw> for providing
  *       information on the MA600 dongle
  *
  *     Copyright (c) 2000 Leung, 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 of
  *     the License, 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, write to the Free Software
  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  *     MA 02111-1307 USA
  *
  ********************************************************************/

 /* define this macro for release version */
 //#define NDEBUG

 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/tty.h>
 #include <linux/init.h>

 #include <net/irda/irda.h>
 #include <net/irda/irda_device.h>

 #ifndef NDEBUG
 	#undef IRDA_DEBUG
 	#define IRDA_DEBUG(n, args...) (printk(KERN_DEBUG args))

 	#undef ASSERT
 	#define ASSERT(expr, func) \
 	if(!(expr)) { \
 	        printk( "Assertion failed! %s,%s,%s,line=%d\n",\
         	#expr,__FILE__,__FUNCTION__,__LINE__); \
 	        func}
 #endif

 /* convert hex value to ascii hex */
 static const char hexTbl[] = "0123456789ABCDEF";


 static void ma600_open(dongle_t *self, struct qos_info *qos);
 static void ma600_close(dongle_t *self);
 static int  ma600_change_speed(struct irda_task *task);
 static int  ma600_reset(struct irda_task *task);

 /* control byte for MA600 */
 #define MA600_9600	0x00
 #define MA600_19200	0x01
 #define MA600_38400	0x02
 #define MA600_57600	0x03
 #define MA600_115200	0x04
 #define MA600_DEV_ID1	0x05
 #define MA600_DEV_ID2	0x06
 #define MA600_2400	0x08

 static struct dongle_reg dongle = {
 	.type = IRDA_MA600_DONGLE,
 	.open = ma600_open,
 	.close = ma600_close,
 	.reset = ma600_reset,
 	.change_speed = ma600_change_speed,
 	.owner = THIS_MODULE,
 };

 static int __init ma600_init(void)
 {
 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 	return irda_device_register_dongle(&dongle);
 }

 static void __exit ma600_cleanup(void)
 {
 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 	irda_device_unregister_dongle(&dongle);
 }

 /*
 	Power on:
 		(0) Clear RTS and DTR for 1 second
 		(1) Set RTS and DTR for 1 second
 		(2) 9600 bps now
 	Note: assume RTS, DTR are clear before
 */
 static void ma600_open(dongle_t *self, struct qos_info *qos)
 {
 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

 	qos->baud_rate.bits &= IR_2400|IR_9600|IR_19200|IR_38400
 				|IR_57600|IR_115200;
 	qos->min_turn_time.bits = 0x01;		/* Needs at least 1 ms */
 	irda_qos_bits_to_value(qos);

 	//self->set_dtr_rts(self->dev, FALSE, FALSE);
 	// should wait 1 second

 	self->set_dtr_rts(self->dev, TRUE, TRUE);
 	// should wait 1 second
 }

 static void ma600_close(dongle_t *self)
 {
 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

 	/* Power off dongle */
 	self->set_dtr_rts(self->dev, FALSE, FALSE);
 }

 static __u8 get_control_byte(__u32 speed)
 {
 	__u8 byte;

 	switch (speed) {
 	default:
 	case 115200:
 		byte = MA600_115200;
 		break;
 	case 57600:
 		byte = MA600_57600;
 		break;
 	case 38400:
 		byte = MA600_38400;
 		break;
 	case 19200:
 		byte = MA600_19200;
 		break;
 	case 9600:
 		byte = MA600_9600;
 		break;
 	case 2400:
 		byte = MA600_2400;
 		break;
 	}

 	return byte;
 }

 /*
  * Function ma600_change_speed (dev, state, speed)
  *
  *    Set the speed for the MA600 type dongle. Warning, this
  *    function must be called with a process context!
  *
  *    Algorithm
  *    1. Reset
  *    2. clear RTS, set DTR and wait for 1ms
  *    3. send Control Byte to the MA600 through TXD to set new baud rate
  *       wait until the stop bit of Control Byte is sent (for 9600 baud rate,
  *       it takes about 10 msec)
  *    4. set RTS, set DTR (return to NORMAL Operation)
  *    5. wait at least 10 ms, new setting (baud rate, etc) takes effect here
  *       after
  */
 static int ma600_change_speed(struct irda_task *task)
 {
 	dongle_t *self = (dongle_t *) task->instance;
 	__u32 speed = (__u32) task->param;
 	static __u8 byte;
 	__u8 byte_echo;
 	int ret = 0;

 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

 	ASSERT(task != NULL, return -1;);

 	if (self->speed_task && self->speed_task != task) {
 		IRDA_DEBUG(0, "%s(), busy!\n", __FUNCTION__);
 		return msecs_to_jiffies(10);
 	} else {
 		self->speed_task = task;
 	}

 	switch (task->state) {
 	case IRDA_TASK_INIT:
 	case IRDA_TASK_CHILD_INIT:
 		/*
 		 * Need to reset the dongle and go to 9600 bps before
                  * programming
 		 */
 		if (irda_task_execute(self, ma600_reset, NULL, task,
 				      (void *) speed)) {
 			/* Dongle need more time to reset */
 			irda_task_next_state(task, IRDA_TASK_CHILD_WAIT);

 			/* give 1 second to finish */
 			ret = msecs_to_jiffies(1000);
 		} else {
 			irda_task_next_state(task, IRDA_TASK_CHILD_DONE);
 		}
 		break;

 	case IRDA_TASK_CHILD_WAIT:
 		IRDA_WARNING("%s(), resetting dongle timed out!\n",
 			     __FUNCTION__);
 		ret = -1;
 		break;

 	case IRDA_TASK_CHILD_DONE:
 		/* Set DTR, Clear RTS */
 		self->set_dtr_rts(self->dev, TRUE, FALSE);

 		ret = msecs_to_jiffies(1);		/* Sleep 1 ms */
 		irda_task_next_state(task, IRDA_TASK_WAIT);
 		break;

 	case IRDA_TASK_WAIT:
 		speed = (__u32) task->param;
 		byte = get_control_byte(speed);

 		/* Write control byte */
 		self->write(self->dev, &byte, sizeof(byte));

 		irda_task_next_state(task, IRDA_TASK_WAIT1);

 		/* Wait at least 10 ms */
 		ret = msecs_to_jiffies(15);
 		break;

 	case IRDA_TASK_WAIT1:
 		/* Read control byte echo */
 		self->read(self->dev, &byte_echo, sizeof(byte_echo));

 		if(byte != byte_echo) {
 			/* if control byte != echo, I don't know what to do */
 			printk(KERN_WARNING "%s() control byte written != read!\n", __FUNCTION__);
 			printk(KERN_WARNING "control byte = 0x%c%c\n",
 			       hexTbl[(byte>>4)&0x0f], hexTbl[byte&0x0f]);
 			printk(KERN_WARNING "byte echo = 0x%c%c\n",
 			       hexTbl[(byte_echo>>4) & 0x0f],
 			       hexTbl[byte_echo & 0x0f]);
 		#ifndef NDEBUG
 		} else {
 			IRDA_DEBUG(2, "%s() control byte write read OK\n", __FUNCTION__);
 		#endif
 		}

 		/* Set DTR, Set RTS */
 		self->set_dtr_rts(self->dev, TRUE, TRUE);

 		irda_task_next_state(task, IRDA_TASK_WAIT2);

 		/* Wait at least 10 ms */
 		ret = msecs_to_jiffies(10);
 		break;

 	case IRDA_TASK_WAIT2:
 		irda_task_next_state(task, IRDA_TASK_DONE);
 		self->speed_task = NULL;
 		break;

 	default:
 		IRDA_ERROR("%s(), unknown state %d\n",
 			   __FUNCTION__, task->state);
 		irda_task_next_state(task, IRDA_TASK_DONE);
 		self->speed_task = NULL;
 		ret = -1;
 		break;
 	}
 	return ret;
 }

 /*
  * Function ma600_reset (driver)
  *
  *      This function resets the ma600 dongle. Warning, this function
  *      must be called with a process context!!
  *
  *      Algorithm:
  *    	  0. DTR=0, RTS=1 and wait 10 ms
  *    	  1. DTR=1, RTS=1 and wait 10 ms
  *        2. 9600 bps now
  */
 int ma600_reset(struct irda_task *task)
 {
 	dongle_t *self = (dongle_t *) task->instance;
 	int ret = 0;

 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

 	ASSERT(task != NULL, return -1;);

 	if (self->reset_task && self->reset_task != task) {
 		IRDA_DEBUG(0, "%s(), busy!\n", __FUNCTION__);
 		return msecs_to_jiffies(10);
 	} else
 		self->reset_task = task;

 	switch (task->state) {
 	case IRDA_TASK_INIT:
 		/* Clear DTR and Set RTS */
 		self->set_dtr_rts(self->dev, FALSE, TRUE);
 		irda_task_next_state(task, IRDA_TASK_WAIT1);
 		ret = msecs_to_jiffies(10);		/* Sleep 10 ms */
 		break;
 	case IRDA_TASK_WAIT1:
 		/* Set DTR and RTS */
 		self->set_dtr_rts(self->dev, TRUE, TRUE);
 		irda_task_next_state(task, IRDA_TASK_WAIT2);
 		ret = msecs_to_jiffies(10);		/* Sleep 10 ms */
 		break;
 	case IRDA_TASK_WAIT2:
 		irda_task_next_state(task, IRDA_TASK_DONE);
 		self->reset_task = NULL;
 		break;
 	default:
 		IRDA_ERROR("%s(), unknown state %d\n",
 			   __FUNCTION__, task->state);
 		irda_task_next_state(task, IRDA_TASK_DONE);
 		self->reset_task = NULL;
 		ret = -1;
 	}
 	return ret;
 }

 MODULE_AUTHOR("Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95");
 MODULE_DESCRIPTION("MA600 dongle driver version 0.1");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("irda-dongle-11"); /* IRDA_MA600_DONGLE */

 /*
  * Function init_module (void)
  *
  *    Initialize MA600 module
  *
  */
 module_init(ma600_init);

 /*
  * Function cleanup_module (void)
  *
  *    Cleanup MA600 module
  *
  */
 module_exit(ma600_cleanup);
	/*********************************************************************
	*
	* Filename: ma600.c
	* Version: 0.1
	* Description: Implementation of the MA600 dongle
	* Status: Experimental.
	* Author: Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95
	* Created at: Sat Jun 10 20:02:35 2000
	* Modified at:
	* Modified by:
	*
	* Note: very thanks to Mr. Maru Wang <maru@mobileaction.com.tw> for providing
	* information on the MA600 dongle
	*
	* Copyright (c) 2000 Leung, 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 of
	* the License, 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, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*
	********************************************************************/

	/* define this macro for release version */
	//#define NDEBUG

	#include <linux/module.h>
	#include <linux/delay.h>
	#include <linux/tty.h>
	#include <linux/init.h>

	#include <net/irda/irda.h>
	#include <net/irda/irda_device.h>

	#ifndef NDEBUG
	#undef IRDA_DEBUG
	#define IRDA_DEBUG(n, args...) (printk(KERN_DEBUG args))

	#undef ASSERT
	#define ASSERT(expr, func) \
	if(!(expr)) { \
	printk( "Assertion failed! %s,%s,%s,line=%d\n",\
	#expr,__FILE__,__FUNCTION__,__LINE__); \
	func}
	#endif

	/* convert hex value to ascii hex */
	static const char hexTbl[] = "0123456789ABCDEF";


	static void ma600_open(dongle_t self, struct qos_info qos);
	static void ma600_close(dongle_t *self);
	static int ma600_change_speed(struct irda_task *task);
	static int ma600_reset(struct irda_task *task);

	/* control byte for MA600 */
	#define MA600_9600 0x00
	#define MA600_19200 0x01
	#define MA600_38400 0x02
	#define MA600_57600 0x03
	#define MA600_115200 0x04
	#define MA600_DEV_ID1 0x05
	#define MA600_DEV_ID2 0x06
	#define MA600_2400 0x08

	static struct dongle_reg dongle = {
	.type = IRDA_MA600_DONGLE,
	.open = ma600_open,
	.close = ma600_close,
	.reset = ma600_reset,
	.change_speed = ma600_change_speed,
	.owner = THIS_MODULE,
	};

	static int __init ma600_init(void)
	{
	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
	return irda_device_register_dongle(&dongle);
	}

	static void __exit ma600_cleanup(void)
	{
	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
	irda_device_unregister_dongle(&dongle);
	}

	/*
	Power on:
	(0) Clear RTS and DTR for 1 second
	(1) Set RTS and DTR for 1 second
	(2) 9600 bps now
	Note: assume RTS, DTR are clear before
	*/
	static void ma600_open(dongle_t self, struct qos_info qos)
	{
	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

	qos->baud_rate.bits &= IR_2400\|IR_9600\|IR_19200\|IR_38400
	\|IR_57600\|IR_115200;
	qos->min_turn_time.bits = 0x01; /* Needs at least 1 ms */
	irda_qos_bits_to_value(qos);

	//self->set_dtr_rts(self->dev, FALSE, FALSE);
	// should wait 1 second

	self->set_dtr_rts(self->dev, TRUE, TRUE);
	// should wait 1 second
	}

	static void ma600_close(dongle_t *self)
	{
	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

	/* Power off dongle */
	self->set_dtr_rts(self->dev, FALSE, FALSE);
	}

	static __u8 get_control_byte(__u32 speed)
	{
	__u8 byte;

	switch (speed) {
	default:
	case 115200:
	byte = MA600_115200;
	break;
	case 57600:
	byte = MA600_57600;
	break;
	case 38400:
	byte = MA600_38400;
	break;
	case 19200:
	byte = MA600_19200;
	break;
	case 9600:
	byte = MA600_9600;
	break;
	case 2400:
	byte = MA600_2400;
	break;
	}

	return byte;
	}

	/*
	* Function ma600_change_speed (dev, state, speed)
	*
	* Set the speed for the MA600 type dongle. Warning, this
	* function must be called with a process context!
	*
	* Algorithm
	* 1. Reset
	* 2. clear RTS, set DTR and wait for 1ms
	* 3. send Control Byte to the MA600 through TXD to set new baud rate
	* wait until the stop bit of Control Byte is sent (for 9600 baud rate,
	* it takes about 10 msec)
	* 4. set RTS, set DTR (return to NORMAL Operation)
	* 5. wait at least 10 ms, new setting (baud rate, etc) takes effect here
	* after
	*/
	static int ma600_change_speed(struct irda_task *task)
	{
	dongle_t self = (dongle_t ) task->instance;
	__u32 speed = (__u32) task->param;
	static __u8 byte;
	__u8 byte_echo;
	int ret = 0;

	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

	ASSERT(task != NULL, return -1;);

	if (self->speed_task && self->speed_task != task) {
	IRDA_DEBUG(0, "%s(), busy!\n", __FUNCTION__);
	return msecs_to_jiffies(10);
	} else {
	self->speed_task = task;
	}

	switch (task->state) {
	case IRDA_TASK_INIT:
	case IRDA_TASK_CHILD_INIT:
	/*
	* Need to reset the dongle and go to 9600 bps before
	* programming
	*/
	if (irda_task_execute(self, ma600_reset, NULL, task,
	(void *) speed)) {
	/* Dongle need more time to reset */
	irda_task_next_state(task, IRDA_TASK_CHILD_WAIT);

	/* give 1 second to finish */
	ret = msecs_to_jiffies(1000);
	} else {
	irda_task_next_state(task, IRDA_TASK_CHILD_DONE);
	}
	break;

	case IRDA_TASK_CHILD_WAIT:
	IRDA_WARNING("%s(), resetting dongle timed out!\n",
	__FUNCTION__);
	ret = -1;
	break;

	case IRDA_TASK_CHILD_DONE:
	/* Set DTR, Clear RTS */
	self->set_dtr_rts(self->dev, TRUE, FALSE);

	ret = msecs_to_jiffies(1); /* Sleep 1 ms */
	irda_task_next_state(task, IRDA_TASK_WAIT);
	break;

	case IRDA_TASK_WAIT:
	speed = (__u32) task->param;
	byte = get_control_byte(speed);

	/* Write control byte */
	self->write(self->dev, &byte, sizeof(byte));

	irda_task_next_state(task, IRDA_TASK_WAIT1);

	/* Wait at least 10 ms */
	ret = msecs_to_jiffies(15);
	break;

	case IRDA_TASK_WAIT1:
	/* Read control byte echo */
	self->read(self->dev, &byte_echo, sizeof(byte_echo));

	if(byte != byte_echo) {
	/* if control byte != echo, I don't know what to do */
	printk(KERN_WARNING "%s() control byte written != read!\n", __FUNCTION__);
	printk(KERN_WARNING "control byte = 0x%c%c\n",
	hexTbl[(byte>>4)&0x0f], hexTbl[byte&0x0f]);
	printk(KERN_WARNING "byte echo = 0x%c%c\n",
	hexTbl[(byte_echo>>4) & 0x0f],
	hexTbl[byte_echo & 0x0f]);
	#ifndef NDEBUG
	} else {
	IRDA_DEBUG(2, "%s() control byte write read OK\n", __FUNCTION__);
	#endif
	}

	/* Set DTR, Set RTS */
	self->set_dtr_rts(self->dev, TRUE, TRUE);

	irda_task_next_state(task, IRDA_TASK_WAIT2);

	/* Wait at least 10 ms */
	ret = msecs_to_jiffies(10);
	break;

	case IRDA_TASK_WAIT2:
	irda_task_next_state(task, IRDA_TASK_DONE);
	self->speed_task = NULL;
	break;

	default:
	IRDA_ERROR("%s(), unknown state %d\n",
	__FUNCTION__, task->state);
	irda_task_next_state(task, IRDA_TASK_DONE);
	self->speed_task = NULL;
	ret = -1;
	break;
	}
	return ret;
	}

	/*
	* Function ma600_reset (driver)
	*
	* This function resets the ma600 dongle. Warning, this function
	* must be called with a process context!!
	*
	* Algorithm:
	* 0. DTR=0, RTS=1 and wait 10 ms
	* 1. DTR=1, RTS=1 and wait 10 ms
	* 2. 9600 bps now
	*/
	int ma600_reset(struct irda_task *task)
	{
	dongle_t self = (dongle_t ) task->instance;
	int ret = 0;

	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);

	ASSERT(task != NULL, return -1;);

	if (self->reset_task && self->reset_task != task) {
	IRDA_DEBUG(0, "%s(), busy!\n", __FUNCTION__);
	return msecs_to_jiffies(10);
	} else
	self->reset_task = task;

	switch (task->state) {
	case IRDA_TASK_INIT:
	/* Clear DTR and Set RTS */
	self->set_dtr_rts(self->dev, FALSE, TRUE);
	irda_task_next_state(task, IRDA_TASK_WAIT1);
	ret = msecs_to_jiffies(10); /* Sleep 10 ms */
	break;
	case IRDA_TASK_WAIT1:
	/* Set DTR and RTS */
	self->set_dtr_rts(self->dev, TRUE, TRUE);
	irda_task_next_state(task, IRDA_TASK_WAIT2);
	ret = msecs_to_jiffies(10); /* Sleep 10 ms */
	break;
	case IRDA_TASK_WAIT2:
	irda_task_next_state(task, IRDA_TASK_DONE);
	self->reset_task = NULL;
	break;
	default:
	IRDA_ERROR("%s(), unknown state %d\n",
	__FUNCTION__, task->state);
	irda_task_next_state(task, IRDA_TASK_DONE);
	self->reset_task = NULL;
	ret = -1;
	}
	return ret;
	}

	MODULE_AUTHOR("Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95");
	MODULE_DESCRIPTION("MA600 dongle driver version 0.1");
	MODULE_LICENSE("GPL");
	MODULE_ALIAS("irda-dongle-11"); /* IRDA_MA600_DONGLE */

	/*
	* Function init_module (void)
	*
	* Initialize MA600 module
	*
	*/
	module_init(ma600_init);

	/*
	* Function cleanup_module (void)
	*
	* Cleanup MA600 module
	*
	*/
	module_exit(ma600_cleanup);