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, 230 insertions, 0 deletions

diff --git a/drivers/net/irda/mcp2120-sir.c b/drivers/net/irda/mcp2120-sir.c
new file mode 100644
index 000000000000..67bd016e4df8
--- /dev/null
+++ b/drivers/net/irda/mcp2120-sir.c
@@ -0,0 +1,230 @@
+/*********************************************************************
+ *            
+ *    
+ * 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/init.h>
+
+#include <net/irda/irda.h>
+
+#include "sir-dev.h"
+
+static int mcp2120_reset(struct sir_dev *dev);
+static int mcp2120_open(struct sir_dev *dev);
+static int mcp2120_close(struct sir_dev *dev);
+static int mcp2120_change_speed(struct sir_dev *dev, unsigned speed);
+
+#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_driver mcp2120 = {
+        .owner          = THIS_MODULE,
+        .driver_name    = "Microchip MCP2120",
+        .type           = IRDA_MCP2120_DONGLE,
+        .open           = mcp2120_open,
+        .close          = mcp2120_close,
+        .reset          = mcp2120_reset,
+        .set_speed      = mcp2120_change_speed,
+};
+
+static int __init mcp2120_sir_init(void)
+{
+        return irda_register_dongle(&mcp2120);
+}
+
+static void __exit mcp2120_sir_cleanup(void)
+{
+        irda_unregister_dongle(&mcp2120);
+}
+
+static int mcp2120_open(struct sir_dev *dev)
+{
+        struct qos_info *qos = &dev->qos;
+
+        IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+        /* seems no explicit power-on required here and reset switching it on anyway */
+
+        qos->baud_rate.bits &= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
+        qos->min_turn_time.bits = 0x01;
+        irda_qos_bits_to_value(qos);
+
+        return 0;
+}
+
+static int mcp2120_close(struct sir_dev *dev)
+{
+        IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+        /* Power off dongle */
+        /* reset and inhibit mcp2120 */
+        sirdev_set_dtr_rts(dev, TRUE, TRUE);
+        // sirdev_set_dtr_rts(dev, FALSE, FALSE);
+
+        return 0;
+}
+
+/*
+ * Function mcp2120_change_speed (dev, speed)
+ *
+ *    Set the speed for the MCP2120.
+ *
+ */
+
+#define MCP2120_STATE_WAIT_SPEED        (SIRDEV_STATE_DONGLE_SPEED+1)
+
+static int mcp2120_change_speed(struct sir_dev *dev, unsigned speed)
+{
+        unsigned state = dev->fsm.substate;
+        unsigned delay = 0;
+        u8 control[2];
+        static int ret = 0;
+
+        IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+        switch (state) {
+        case SIRDEV_STATE_DONGLE_SPEED:
+                /* Set DTR to enter command mode */
+                sirdev_set_dtr_rts(dev, TRUE, FALSE);
+                udelay(500);
+
+                ret = 0;
+                switch (speed) {
+                default:
+                        speed = 9600;
+                        ret = -EINVAL;
+                        /* fall through */
+                case 9600:
+                        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 */
+                sirdev_raw_write(dev, control, 2);
+                dev->speed = speed;
+
+                state = MCP2120_STATE_WAIT_SPEED;
+                delay = 100;
+                //printk("mcp2120_change_speed: dongle_speed\n");
+                break;
+
+        case MCP2120_STATE_WAIT_SPEED:
+                /* Go back to normal mode */
+                sirdev_set_dtr_rts(dev, FALSE, FALSE);
+                //printk("mcp2120_change_speed: mcp_wait\n");
+                break;
+
+        default:
+                IRDA_ERROR("%s(), undefine state %d\n", __FUNCTION__, state);
+                ret = -EINVAL;
+                break;
+        }
+        dev->fsm.substate = state;
+        return (delay > 0) ? delay : 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).
+ *      
+ */
+
+#define MCP2120_STATE_WAIT1_RESET       (SIRDEV_STATE_DONGLE_RESET+1)
+#define MCP2120_STATE_WAIT2_RESET       (SIRDEV_STATE_DONGLE_RESET+2)
+
+static int mcp2120_reset(struct sir_dev *dev)
+{
+        unsigned state = dev->fsm.substate;
+        unsigned delay = 0;
+        int ret = 0;
+
+        IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+        switch (state) {
+        case SIRDEV_STATE_DONGLE_RESET:
+                //printk("mcp2120_reset: dongle_reset\n");
+                /* Reset dongle by setting RTS*/
+                sirdev_set_dtr_rts(dev, TRUE, TRUE);
+                state = MCP2120_STATE_WAIT1_RESET;
+                delay = 50;
+                break;
+
+        case MCP2120_STATE_WAIT1_RESET:
+                //printk("mcp2120_reset: mcp2120_wait1\n");
+                /* clear RTS and wait for at least 30 ms. */
+                sirdev_set_dtr_rts(dev, FALSE, FALSE);
+                state = MCP2120_STATE_WAIT2_RESET;
+                delay = 50;
+                break;
+
+        case MCP2120_STATE_WAIT2_RESET:
+                //printk("mcp2120_reset mcp2120_wait2\n");
+                /* Go back to normal mode */
+                sirdev_set_dtr_rts(dev, FALSE, FALSE);
+                break;
+
+        default:
+                IRDA_ERROR("%s(), undefined state %d\n", __FUNCTION__, state);
+                ret = -EINVAL;
+                break;
+        }
+        dev->fsm.substate = state;
+        return (delay > 0) ? delay : ret;
+}
+
+MODULE_AUTHOR("Felix Tang <tangf@eyetap.org>");
+MODULE_DESCRIPTION("Microchip MCP2120");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("irda-dongle-9"); /* IRDA_MCP2120_DONGLE */
+
+module_init(mcp2120_sir_init);
+module_exit(mcp2120_sir_cleanup);