Commit 177030c3 authored by Jean Tourrilhes's avatar Jean Tourrilhes Committed by Linus Torvalds

irda update 4/7:

o [FEATURE] Dongle driver for mcp2120/crystal hardware
parent ad7e3eda
...@@ -138,6 +138,18 @@ CONFIG_LITELINK_DONGLE ...@@ -138,6 +138,18 @@ CONFIG_LITELINK_DONGLE
used by IrTTY. To activate support for Parallax dongles you will used by IrTTY. To activate support for Parallax dongles you will
have to start irattach like this "irattach -d litelink". have to start irattach like this "irattach -d litelink".
Microchip MCP2120 dongle
CONFIG_MCP2120_DONGLE
Say Y here if you want to build support for the Microchip MCP2120
dongle. If you want to compile it as a module, say M here and read
<file:Documentation/modules.txt>. The MCP2120 dongle attaches to
the normal 9-pin serial port connector, and can currently only be
used by IrTTY. To activate support for MCP2120 dongles you will
have to insert "irattach -d mcp2120" in the /etc/irda/drivers script.
You must build this dongle yourself. For more information see:
<http://www.eyetap.org/~tangf/irda_sir_linux.html>
CONFIG_OLD_BELKIN_DONGLE CONFIG_OLD_BELKIN_DONGLE
Say Y here if you want to build support for the Adaptec Airport 1000 Say Y here if you want to build support for the Adaptec Airport 1000
and 2000 dongles. If you want to compile it as a module, say M here and 2000 dongles. If you want to compile it as a module, say M here
......
...@@ -13,6 +13,7 @@ if [ "$CONFIG_DONGLE" != "n" ]; then ...@@ -13,6 +13,7 @@ if [ "$CONFIG_DONGLE" != "n" ]; then
dep_tristate ' Tekram IrMate 210B dongle' CONFIG_TEKRAM_DONGLE $CONFIG_IRDA dep_tristate ' Tekram IrMate 210B dongle' CONFIG_TEKRAM_DONGLE $CONFIG_IRDA
dep_tristate ' Greenwich GIrBIL dongle' CONFIG_GIRBIL_DONGLE $CONFIG_IRDA dep_tristate ' Greenwich GIrBIL dongle' CONFIG_GIRBIL_DONGLE $CONFIG_IRDA
dep_tristate ' Parallax LiteLink dongle' CONFIG_LITELINK_DONGLE $CONFIG_IRDA dep_tristate ' Parallax LiteLink dongle' CONFIG_LITELINK_DONGLE $CONFIG_IRDA
dep_tristate ' Microchip MCP2120' CONFIG_MCP2120_DONGLE $CONFIG_IRDA
dep_tristate ' Old Belkin dongle' CONFIG_OLD_BELKIN_DONGLE $CONFIG_IRDA dep_tristate ' Old Belkin dongle' CONFIG_OLD_BELKIN_DONGLE $CONFIG_IRDA
if [ "$CONFIG_ARCH_EP7211" = "y" ]; then if [ "$CONFIG_ARCH_EP7211" = "y" ]; then
dep_tristate ' EP7211 I/R support' CONFIG_EP7211_IR $CONFIG_IRDA dep_tristate ' EP7211 I/R support' CONFIG_EP7211_IR $CONFIG_IRDA
......
...@@ -28,5 +28,6 @@ obj-$(CONFIG_GIRBIL_DONGLE) += girbil.o ...@@ -28,5 +28,6 @@ obj-$(CONFIG_GIRBIL_DONGLE) += girbil.o
obj-$(CONFIG_LITELINK_DONGLE) += litelink.o obj-$(CONFIG_LITELINK_DONGLE) += litelink.o
obj-$(CONFIG_OLD_BELKIN_DONGLE) += old_belkin.o obj-$(CONFIG_OLD_BELKIN_DONGLE) += old_belkin.o
obj-$(CONFIG_EP7211_IR) += ep7211_ir.o obj-$(CONFIG_EP7211_IR) += ep7211_ir.o
obj-$(CONFIG_MCP2120_DONGLE) += mcp2120.o
include $(TOPDIR)/Rules.make include $(TOPDIR)/Rules.make
/*********************************************************************
*
*
* Filename: mcp2120.c
* Version: 1.0
* Description: Implementation for the MCP2120 (Microchip)
* Status: Experimental.
* Author: Felix Tang (tangf@eyetap.org)
* Created at: Sun Mar 31 19:32:12 EST 2002
* Based on code by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 2002 Felix Tang, 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/sched.h>
#include <linux/init.h>
#include <net/irda/irda.h>
#include <net/irda/irmod.h>
#include <net/irda/irda_device.h>
#include <net/irda/irtty.h>
static int mcp2120_reset(struct irda_task *task);
static void mcp2120_open(dongle_t *self, struct qos_info *qos);
static void mcp2120_close(dongle_t *self);
static int mcp2120_change_speed(struct irda_task *task);
#define MCP2120_9600 0x87
#define MCP2120_19200 0x8B
#define MCP2120_38400 0x85
#define MCP2120_57600 0x83
#define MCP2120_115200 0x81
#define MCP2120_COMMIT 0x11
static struct dongle_reg dongle = {
Q_NULL,
IRDA_MCP2120_DONGLE,
mcp2120_open,
mcp2120_close,
mcp2120_reset,
mcp2120_change_speed,
};
int __init mcp2120_init(void)
{
return irda_device_register_dongle(&dongle);
}
void mcp2120_cleanup(void)
{
irda_device_unregister_dongle(&dongle);
}
static void mcp2120_open(dongle_t *self, struct qos_info *qos)
{
qos->baud_rate.bits &= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
qos->min_turn_time.bits = 0x01;
MOD_INC_USE_COUNT;
}
static void mcp2120_close(dongle_t *self)
{
/* Power off dongle */
/* reset and inhibit mcp2120 */
self->set_dtr_rts(self->dev, TRUE, TRUE);
//self->set_dtr_rts(self->dev, FALSE, FALSE);
MOD_DEC_USE_COUNT;
}
/*
* Function mcp2120_change_speed (dev, speed)
*
* Set the speed for the MCP2120.
*
*/
static int mcp2120_change_speed(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
__u32 speed = (__u32) task->param;
__u8 control[2];
int ret = 0;
self->speed_task = task;
switch (task->state) {
case IRDA_TASK_INIT:
/* Need to reset the dongle and go to 9600 bps before
programming */
//printk("Dmcp2120_change_speed irda_task_init\n");
if (irda_task_execute(self, mcp2120_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:
WARNING(__FUNCTION__ "(), resetting dongle timed out!\n");
ret = -1;
break;
case IRDA_TASK_CHILD_DONE:
/* Set DTR to enter command mode */
self->set_dtr_rts(self->dev, TRUE, FALSE);
udelay(500);
switch (speed) {
case 9600:
default:
control[0] = MCP2120_9600;
//printk("mcp2120 9600\n");
break;
case 19200:
control[0] = MCP2120_19200;
//printk("mcp2120 19200\n");
break;
case 34800:
control[0] = MCP2120_38400;
//printk("mcp2120 38400\n");
break;
case 57600:
control[0] = MCP2120_57600;
//printk("mcp2120 57600\n");
break;
case 115200:
control[0] = MCP2120_115200;
//printk("mcp2120 115200\n");
break;
}
control[1] = MCP2120_COMMIT;
/* Write control bytes */
self->write(self->dev, control, 2);
irda_task_next_state(task, IRDA_TASK_WAIT);
ret = MSECS_TO_JIFFIES(100);
//printk("mcp2120_change_speed irda_child_done\n");
break;
case IRDA_TASK_WAIT:
/* Go back to normal mode */
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_DONE);
self->speed_task = NULL;
//printk("mcp2120_change_speed irda_task_wait\n");
break;
default:
ERROR(__FUNCTION__ "(), unknown state %d\n", task->state);
irda_task_next_state(task, IRDA_TASK_DONE);
self->speed_task = NULL;
ret = -1;
break;
}
return ret;
}
/*
* Function mcp2120_reset (driver)
*
* This function resets the mcp2120 dongle.
*
* Info: -set RTS to reset mcp2120
* -set DTR to set mcp2120 software command mode
* -mcp2120 defaults to 9600 baud after reset
*
* Algorithm:
* 0. Set RTS to reset mcp2120.
* 1. Clear RTS and wait for device reset timer of 30 ms (max).
*
*/
static int mcp2120_reset(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
int ret = 0;
self->reset_task = task;
switch (task->state) {
case IRDA_TASK_INIT:
//printk("mcp2120_reset irda_task_init\n");
/* Reset dongle by setting RTS*/
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:
//printk("mcp2120_reset irda_task_wait1\n");
/* clear RTS and wait for at least 30 ms. */
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_WAIT2);
ret = MSECS_TO_JIFFIES(50);
break;
case IRDA_TASK_WAIT2:
//printk("mcp2120_reset irda_task_wait2\n");
/* Go back to normal mode */
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_DONE);
self->reset_task = NULL;
break;
default:
ERROR(__FUNCTION__ "(), unknown state %d\n", task->state);
irda_task_next_state(task, IRDA_TASK_DONE);
self->reset_task = NULL;
ret = -1;
break;
}
return ret;
}
#ifdef MODULE
MODULE_AUTHOR("Felix Tang <tangf@eyetap.org>");
MODULE_DESCRIPTION("Microchip MCP2120");
MODULE_LICENSE("GPL");
/*
* Function init_module (void)
*
* Initialize MCP2120 module
*
*/
int init_module(void)
{
return mcp2120_init();
}
/*
* Function cleanup_module (void)
*
* Cleanup MCP2120 module
*
*/
void cleanup_module(void)
{
mcp2120_cleanup();
}
#endif /* MODULE */
...@@ -67,6 +67,7 @@ typedef enum { ...@@ -67,6 +67,7 @@ typedef enum {
IRDA_AIRPORT_DONGLE = 6, IRDA_AIRPORT_DONGLE = 6,
IRDA_OLD_BELKIN_DONGLE = 7, IRDA_OLD_BELKIN_DONGLE = 7,
IRDA_EP7211_IR = 8, IRDA_EP7211_IR = 8,
IRDA_MCP2120_DONGLE = 9,
} IRDA_DONGLE; } IRDA_DONGLE;
/* Protocol types to be used for SOCK_DGRAM */ /* Protocol types to be used for SOCK_DGRAM */
......
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