Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 240 insertions, 0 deletions

diff --git a/drivers/net/irda/mcp2120.c b/drivers/net/irda/mcp2120.c
new file mode 100644
index 00000000000..5e6199eeef4
--- /dev/null
+++ b/drivers/net/irda/mcp2120.c
@@ -0,0 +1,240 @@
+/*********************************************************************
+ *            
+ *    
+ * 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);