[mirror_ubuntu-artful-kernel.git] / drivers / net / irda / act200l.c

/*********************************************************************
 *
 * Filename:      act200l.c
 * Version:       0.8
 * Description:   Implementation for the ACTiSYS ACT-IR200L dongle
 * Status:        Experimental.
 * Author:        SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>
 * Created at:    Fri Aug  3 17:35:42 2001
 * Modified at:   Fri Aug 17 10:22:40 2001
 * Modified by:   SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>
 *
 *     Copyright (c) 2001 SHIMIZU Takuya, 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.
 *
 ********************************************************************/

#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>

static int  act200l_reset(struct irda_task *task);
static void act200l_open(dongle_t *self, struct qos_info *qos);
static void act200l_close(dongle_t *self);
static int  act200l_change_speed(struct irda_task *task);

/* Regsiter 0: Control register #1 */
#define ACT200L_REG0    0x00
#define ACT200L_TXEN    0x01 /* Enable transmitter */
#define ACT200L_RXEN    0x02 /* Enable receiver */

/* Register 1: Control register #2 */
#define ACT200L_REG1    0x10
#define ACT200L_LODB    0x01 /* Load new baud rate count value */
#define ACT200L_WIDE    0x04 /* Expand the maximum allowable pulse */

/* Register 4: Output Power register */
#define ACT200L_REG4    0x40
#define ACT200L_OP0     0x01 /* Enable LED1C output */
#define ACT200L_OP1     0x02 /* Enable LED2C output */
#define ACT200L_BLKR    0x04

/* Register 5: Receive Mode register */
#define ACT200L_REG5    0x50
#define ACT200L_RWIDL   0x01 /* fixed 1.6us pulse mode */

/* Register 6: Receive Sensitivity register #1 */
#define ACT200L_REG6    0x60
#define ACT200L_RS0     0x01 /* receive threshold bit 0 */
#define ACT200L_RS1     0x02 /* receive threshold bit 1 */

/* Register 7: Receive Sensitivity register #2 */
#define ACT200L_REG7    0x70
#define ACT200L_ENPOS   0x04 /* Ignore the falling edge */

/* Register 8,9: Baud Rate Dvider register #1,#2 */
#define ACT200L_REG8    0x80
#define ACT200L_REG9    0x90

#define ACT200L_2400    0x5f
#define ACT200L_9600    0x17
#define ACT200L_19200   0x0b
#define ACT200L_38400   0x05
#define ACT200L_57600   0x03
#define ACT200L_115200  0x01

/* Register 13: Control register #3 */
#define ACT200L_REG13   0xd0
#define ACT200L_SHDW    0x01 /* Enable access to shadow registers */

/* Register 15: Status register */
#define ACT200L_REG15   0xf0

/* Register 21: Control register #4 */
#define ACT200L_REG21   0x50
#define ACT200L_EXCK    0x02 /* Disable clock output driver */
#define ACT200L_OSCL    0x04 /* oscillator in low power, medium accuracy mode */

static struct dongle_reg dongle = {
	.type = IRDA_ACT200L_DONGLE,
	.open = act200l_open,
	.close = act200l_close,
	.reset = act200l_reset,
	.change_speed = act200l_change_speed,
	.owner = THIS_MODULE,
};

static int __init act200l_init(void)
{
	return irda_device_register_dongle(&dongle);
}

static void __exit act200l_cleanup(void)
{
	irda_device_unregister_dongle(&dongle);
}

static void act200l_open(dongle_t *self, struct qos_info *qos)
{
	IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );

	/* Power on the dongle */
	self->set_dtr_rts(self->dev, TRUE, TRUE);

	/* Set the speeds we can accept */
	qos->baud_rate.bits &= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
	qos->min_turn_time.bits = 0x03;
}

static void act200l_close(dongle_t *self)
{
	IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );

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

/*
 * Function act200l_change_speed (dev, speed)
 *
 *    Set the speed for the ACTiSYS ACT-IR200L type dongle.
 *
 */
static int act200l_change_speed(struct irda_task *task)
{
	dongle_t *self = (dongle_t *) task->instance;
	__u32 speed = (__u32) task->param;
	__u8 control[3];
	int ret = 0;

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

	self->speed_task = task;

	switch (task->state) {
	case IRDA_TASK_INIT:
		if (irda_task_execute(self, act200l_reset, NULL, task,
				(void *) speed))
		{
			/* Dongle need more time to reset */
			irda_task_next_state(task, IRDA_TASK_CHILD_WAIT);

			/* Give reset 1 sec to finish */
			ret = msecs_to_jiffies(1000);
		}
		break;
	case IRDA_TASK_CHILD_WAIT:
		IRDA_WARNING("%s(), resetting dongle timed out!\n",
			     __FUNCTION__);
		ret = -1;
		break;
	case IRDA_TASK_CHILD_DONE:
		/* Clear DTR and set RTS to enter command mode */
		self->set_dtr_rts(self->dev, FALSE, TRUE);

		switch (speed) {
		case 9600:
		default:
			control[0] = ACT200L_REG8 |  (ACT200L_9600       & 0x0f);
			control[1] = ACT200L_REG9 | ((ACT200L_9600 >> 4) & 0x0f);
			break;
		case 19200:
			control[0] = ACT200L_REG8 |  (ACT200L_19200       & 0x0f);
			control[1] = ACT200L_REG9 | ((ACT200L_19200 >> 4) & 0x0f);
			break;
		case 38400:
			control[0] = ACT200L_REG8 |  (ACT200L_38400       & 0x0f);
			control[1] = ACT200L_REG9 | ((ACT200L_38400 >> 4) & 0x0f);
			break;
		case 57600:
			control[0] = ACT200L_REG8 |  (ACT200L_57600       & 0x0f);
			control[1] = ACT200L_REG9 | ((ACT200L_57600 >> 4) & 0x0f);
			break;
		case 115200:
			control[0] = ACT200L_REG8 |  (ACT200L_115200       & 0x0f);
			control[1] = ACT200L_REG9 | ((ACT200L_115200 >> 4) & 0x0f);
			break;
		}
		control[2] = ACT200L_REG1 | ACT200L_LODB | ACT200L_WIDE;

		/* Write control bytes */
		self->write(self->dev, control, 3);
		irda_task_next_state(task, IRDA_TASK_WAIT);
		ret = msecs_to_jiffies(5);
		break;
	case IRDA_TASK_WAIT:
		/* Go back to normal mode */
		self->set_dtr_rts(self->dev, TRUE, TRUE);

		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 act200l_reset (driver)
 *
 *    Reset the ACTiSYS ACT-IR200L type dongle.
 */
static int act200l_reset(struct irda_task *task)
{
	dongle_t *self = (dongle_t *) task->instance;
	__u8 control[9] = {
		ACT200L_REG15,
		ACT200L_REG13 | ACT200L_SHDW,
		ACT200L_REG21 | ACT200L_EXCK | ACT200L_OSCL,
		ACT200L_REG13,
		ACT200L_REG7  | ACT200L_ENPOS,
		ACT200L_REG6  | ACT200L_RS0  | ACT200L_RS1,
		ACT200L_REG5  | ACT200L_RWIDL,
		ACT200L_REG4  | ACT200L_OP0  | ACT200L_OP1 | ACT200L_BLKR,
		ACT200L_REG0  | ACT200L_TXEN | ACT200L_RXEN
	};
	int ret = 0;

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

	self->reset_task = task;

	switch (task->state) {
	case IRDA_TASK_INIT:
		/* Power on the dongle */
		self->set_dtr_rts(self->dev, TRUE, TRUE);

		irda_task_next_state(task, IRDA_TASK_WAIT1);
		ret = msecs_to_jiffies(50);
		break;
	case IRDA_TASK_WAIT1:
		/* Reset the dongle : set RTS low for 25 ms */
		self->set_dtr_rts(self->dev, TRUE, FALSE);

		irda_task_next_state(task, IRDA_TASK_WAIT2);
		ret = msecs_to_jiffies(50);
		break;
	case IRDA_TASK_WAIT2:
		/* Clear DTR and set RTS to enter command mode */
		self->set_dtr_rts(self->dev, FALSE, TRUE);

		/* Write control bytes */
		self->write(self->dev, control, 9);
		irda_task_next_state(task, IRDA_TASK_WAIT3);
		ret = msecs_to_jiffies(15);
		break;
	case IRDA_TASK_WAIT3:
		/* Go back to normal mode */
		self->set_dtr_rts(self->dev, TRUE, TRUE);

		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;
		break;
	}
	return ret;
}

MODULE_AUTHOR("SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>");
MODULE_DESCRIPTION("ACTiSYS ACT-IR200L dongle driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("irda-dongle-10"); /* IRDA_ACT200L_DONGLE */

/*
 * Function init_module (void)
 *
 *    Initialize ACTiSYS ACT-IR200L module
 *
 */
module_init(act200l_init);

/*
 * Function cleanup_module (void)
 *
 *    Cleanup ACTiSYS ACT-IR200L module
 *
 */
module_exit(act200l_cleanup);
Commit	Line	Data
1da177e4 LT	1	/*********************************************************************
	2	*
	3	* Filename: act200l.c
	4	* Version: 0.8
	5	* Description: Implementation for the ACTiSYS ACT-IR200L dongle
	6	* Status: Experimental.
	7	* Author: SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>
	8	* Created at: Fri Aug 3 17:35:42 2001
	9	* Modified at: Fri Aug 17 10:22:40 2001
	10	* Modified by: SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>
	11	*
	12	* Copyright (c) 2001 SHIMIZU Takuya, All Rights Reserved.
	13	*
	14	* This program is free software; you can redistribute it and/or
	15	* modify it under the terms of the GNU General Public License as
	16	* published by the Free Software Foundation; either version 2 of
	17	* the License, or (at your option) any later version.
	18	*
	19	********************************************************************/
	20
	21	#include <linux/module.h>
	22	#include <linux/delay.h>
	23	#include <linux/tty.h>
	24	#include <linux/init.h>
	25
	26	#include <net/irda/irda.h>
	27	#include <net/irda/irda_device.h>
	28
	29	static int act200l_reset(struct irda_task *task);
	30	static void act200l_open(dongle_t self, struct qos_info qos);
	31	static void act200l_close(dongle_t *self);
	32	static int act200l_change_speed(struct irda_task *task);
	33
	34	/* Regsiter 0: Control register #1 */
	35	#define ACT200L_REG0 0x00
	36	#define ACT200L_TXEN 0x01 /* Enable transmitter */
	37	#define ACT200L_RXEN 0x02 /* Enable receiver */
	38
	39	/* Register 1: Control register #2 */
	40	#define ACT200L_REG1 0x10
	41	#define ACT200L_LODB 0x01 /* Load new baud rate count value */
	42	#define ACT200L_WIDE 0x04 /* Expand the maximum allowable pulse */
	43
	44	/* Register 4: Output Power register */
	45	#define ACT200L_REG4 0x40
	46	#define ACT200L_OP0 0x01 /* Enable LED1C output */
	47	#define ACT200L_OP1 0x02 /* Enable LED2C output */
	48	#define ACT200L_BLKR 0x04
	49
	50	/* Register 5: Receive Mode register */
	51	#define ACT200L_REG5 0x50
	52	#define ACT200L_RWIDL 0x01 /* fixed 1.6us pulse mode */
	53
	54	/* Register 6: Receive Sensitivity register #1 */
	55	#define ACT200L_REG6 0x60
	56	#define ACT200L_RS0 0x01 /* receive threshold bit 0 */
	57	#define ACT200L_RS1 0x02 /* receive threshold bit 1 */
	58
	59	/* Register 7: Receive Sensitivity register #2 */
	60	#define ACT200L_REG7 0x70
	61	#define ACT200L_ENPOS 0x04 /* Ignore the falling edge */
	62
	63	/* Register 8,9: Baud Rate Dvider register #1,#2 */
	64	#define ACT200L_REG8 0x80
65	#define ACT200L_REG9 0x90
66
67	#define ACT200L_2400 0x5f
68	#define ACT200L_9600 0x17
69	#define ACT200L_19200 0x0b
70	#define ACT200L_38400 0x05
71	#define ACT200L_57600 0x03
72	#define ACT200L_115200 0x01
73
74	/* Register 13: Control register #3 */
75	#define ACT200L_REG13 0xd0
76	#define ACT200L_SHDW 0x01 /* Enable access to shadow registers */
77
78	/* Register 15: Status register */
79	#define ACT200L_REG15 0xf0
80
81	/* Register 21: Control register #4 */
82	#define ACT200L_REG21 0x50
83	#define ACT200L_EXCK 0x02 /* Disable clock output driver */
84	#define ACT200L_OSCL 0x04 /* oscillator in low power, medium accuracy mode */
85
86	static struct dongle_reg dongle = {
87	.type = IRDA_ACT200L_DONGLE,
88	.open = act200l_open,
89	.close = act200l_close,
90	.reset = act200l_reset,
91	.change_speed = act200l_change_speed,
92	.owner = THIS_MODULE,
93	};
94
95	static int __init act200l_init(void)
96	{
97	return irda_device_register_dongle(&dongle);
98	}
99
100	static void __exit act200l_cleanup(void)
101	{
102	irda_device_unregister_dongle(&dongle);
103	}
104
105	static void act200l_open(dongle_t self, struct qos_info qos)
106	{
107	IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
108
109	/* Power on the dongle */
110	self->set_dtr_rts(self->dev, TRUE, TRUE);
111
112	/* Set the speeds we can accept */
113	qos->baud_rate.bits &= IR_9600\|IR_19200\|IR_38400\|IR_57600\|IR_115200;
114	qos->min_turn_time.bits = 0x03;
115	}
116
117	static void act200l_close(dongle_t *self)
118	{
119	IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
120
121	/* Power off the dongle */
122	self->set_dtr_rts(self->dev, FALSE, FALSE);
123	}
124
125	/*
126	* Function act200l_change_speed (dev, speed)
127	*
128	* Set the speed for the ACTiSYS ACT-IR200L type dongle.
129	*
130	*/
131	static int act200l_change_speed(struct irda_task *task)
132	{
133	dongle_t self = (dongle_t ) task->instance;
134	__u32 speed = (__u32) task->param;
135	__u8 control[3];
136	int ret = 0;
137
138	IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
139
140	self->speed_task = task;
141
142	switch (task->state) {
143	case IRDA_TASK_INIT:
144	if (irda_task_execute(self, act200l_reset, NULL, task,
145	(void *) speed))
146	{
147	/* Dongle need more time to reset */
148	irda_task_next_state(task, IRDA_TASK_CHILD_WAIT);
149
150	/* Give reset 1 sec to finish */
151	ret = msecs_to_jiffies(1000);
152	}
153	break;
154	case IRDA_TASK_CHILD_WAIT:
155	IRDA_WARNING("%s(), resetting dongle timed out!\n",
156	__FUNCTION__);
157	ret = -1;
158	break;
159	case IRDA_TASK_CHILD_DONE:
160	/* Clear DTR and set RTS to enter command mode */
161	self->set_dtr_rts(self->dev, FALSE, TRUE);
162
163	switch (speed) {
164	case 9600:
165	default:
166	control[0] = ACT200L_REG8 \| (ACT200L_9600 & 0x0f);
167	control[1] = ACT200L_REG9 \| ((ACT200L_9600 >> 4) & 0x0f);
168	break;
169	case 19200:
170	control[0] = ACT200L_REG8 \| (ACT200L_19200 & 0x0f);
171	control[1] = ACT200L_REG9 \| ((ACT200L_19200 >> 4) & 0x0f);
172	break;
173	case 38400:
174	control[0] = ACT200L_REG8 \| (ACT200L_38400 & 0x0f);
175	control[1] = ACT200L_REG9 \| ((ACT200L_38400 >> 4) & 0x0f);
176	break;
177	case 57600:
178	control[0] = ACT200L_REG8 \| (ACT200L_57600 & 0x0f);
179	control[1] = ACT200L_REG9 \| ((ACT200L_57600 >> 4) & 0x0f);
180	break;
181	case 115200:
182	control[0] = ACT200L_REG8 \| (ACT200L_115200 & 0x0f);
183	control[1] = ACT200L_REG9 \| ((ACT200L_115200 >> 4) & 0x0f);
184	break;
185	}
186	control[2] = ACT200L_REG1 \| ACT200L_LODB \| ACT200L_WIDE;
187
188	/* Write control bytes */
189	self->write(self->dev, control, 3);
190	irda_task_next_state(task, IRDA_TASK_WAIT);
191	ret = msecs_to_jiffies(5);
192	break;
193	case IRDA_TASK_WAIT:
194	/* Go back to normal mode */
195	self->set_dtr_rts(self->dev, TRUE, TRUE);
196
197	irda_task_next_state(task, IRDA_TASK_DONE);
198	self->speed_task = NULL;
199	break;
200	default:
201	IRDA_ERROR("%s(), unknown state %d\n",
202	__FUNCTION__, task->state);
203	irda_task_next_state(task, IRDA_TASK_DONE);
204	self->speed_task = NULL;
205	ret = -1;
206	break;
207	}
208	return ret;
209	}
210
211	/*
212	* Function act200l_reset (driver)
213	*
214	* Reset the ACTiSYS ACT-IR200L type dongle.
215	*/
216	static int act200l_reset(struct irda_task *task)
217	{
218	dongle_t self = (dongle_t ) task->instance;
219	__u8 control[9] = {
220	ACT200L_REG15,
221	ACT200L_REG13 \| ACT200L_SHDW,
222	ACT200L_REG21 \| ACT200L_EXCK \| ACT200L_OSCL,
223	ACT200L_REG13,
224	ACT200L_REG7 \| ACT200L_ENPOS,
225	ACT200L_REG6 \| ACT200L_RS0 \| ACT200L_RS1,
226	ACT200L_REG5 \| ACT200L_RWIDL,
227	ACT200L_REG4 \| ACT200L_OP0 \| ACT200L_OP1 \| ACT200L_BLKR,
228	ACT200L_REG0 \| ACT200L_TXEN \| ACT200L_RXEN
229	};
230	int ret = 0;
231
232	IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
233
234	self->reset_task = task;
235
236	switch (task->state) {
237	case IRDA_TASK_INIT:
238	/* Power on the dongle */
239	self->set_dtr_rts(self->dev, TRUE, TRUE);
240
241	irda_task_next_state(task, IRDA_TASK_WAIT1);
242	ret = msecs_to_jiffies(50);
243	break;
244	case IRDA_TASK_WAIT1:
245	/* Reset the dongle : set RTS low for 25 ms */
246	self->set_dtr_rts(self->dev, TRUE, FALSE);
247
248	irda_task_next_state(task, IRDA_TASK_WAIT2);
249	ret = msecs_to_jiffies(50);
250	break;
251	case IRDA_TASK_WAIT2:
252	/* Clear DTR and set RTS to enter command mode */
253	self->set_dtr_rts(self->dev, FALSE, TRUE);
254
255	/* Write control bytes */
256	self->write(self->dev, control, 9);
257	irda_task_next_state(task, IRDA_TASK_WAIT3);
258	ret = msecs_to_jiffies(15);
259	break;
260	case IRDA_TASK_WAIT3:
261	/* Go back to normal mode */
262	self->set_dtr_rts(self->dev, TRUE, TRUE);
263
264	irda_task_next_state(task, IRDA_TASK_DONE);
265	self->reset_task = NULL;
266	break;
267	default:
268	IRDA_ERROR("%s(), unknown state %d\n",
269	__FUNCTION__, task->state);
270	irda_task_next_state(task, IRDA_TASK_DONE);
271	self->reset_task = NULL;
272	ret = -1;
273	break;
274	}
275	return ret;
276	}
277
278	MODULE_AUTHOR("SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>");
279	MODULE_DESCRIPTION("ACTiSYS ACT-IR200L dongle driver");
280	MODULE_LICENSE("GPL");
281	MODULE_ALIAS("irda-dongle-10"); /* IRDA_ACT200L_DONGLE */
282
283	/*
284	* Function init_module (void)
285	*
286	* Initialize ACTiSYS ACT-IR200L module
287	*
288	*/
289	module_init(act200l_init);
290
291	/*
292	* Function cleanup_module (void)
293	*
294	* Cleanup ACTiSYS ACT-IR200L module
295	*
296	*/
297	module_exit(act200l_cleanup);