diff options
Diffstat (limited to 'drivers/net/irda/mcp2120.c')
-rw-r--r-- | drivers/net/irda/mcp2120.c | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/drivers/net/irda/mcp2120.c b/drivers/net/irda/mcp2120.c deleted file mode 100644 index 5e6199eeef4f..000000000000 --- a/drivers/net/irda/mcp2120.c +++ /dev/null @@ -1,240 +0,0 @@ -/********************************************************************* - * - * - * 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/init.h> - -#include <net/irda/irda.h> -#include <net/irda/irda_device.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 = { - .type = IRDA_MCP2120_DONGLE, - .open = mcp2120_open, - .close = mcp2120_close, - .reset = mcp2120_reset, - .change_speed = mcp2120_change_speed, - .owner = THIS_MODULE, -}; - -static int __init mcp2120_init(void) -{ - return irda_device_register_dongle(&dongle); -} - -static void __exit 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; -} - -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); -} - -/* - * 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: - IRDA_WARNING("%s(), resetting dongle timed out!\n", - __FUNCTION__); - 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: - 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 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: - 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("Felix Tang <tangf@eyetap.org>"); -MODULE_DESCRIPTION("Microchip MCP2120"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("irda-dongle-9"); /* IRDA_MCP2120_DONGLE */ - -/* - * Function init_module (void) - * - * Initialize MCP2120 module - * - */ -module_init(mcp2120_init); - -/* - * Function cleanup_module (void) - * - * Cleanup MCP2120 module - * - */ -module_exit(mcp2120_cleanup); |