aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/irda/mcp2120.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/irda/mcp2120.c')
-rw-r--r--drivers/net/irda/mcp2120.c240
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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.