Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / irda / esi-sir.c

diff --git a/kernel/drivers/net/irda/esi-sir.c b/kernel/drivers/net/irda/esi-sir.c
new file mode 100644 (file)
index 0000000..019a3e8
--- /dev/null
+++ b/kernel/drivers/net/irda/esi-sir.c
@@ -0,0 +1,157 @@
+/*********************************************************************
+ *                
+ * Filename:      esi.c
+ * Version:       1.6
+ * Description:   Driver for the Extended Systems JetEye PC dongle
+ * Status:        Experimental.
+ * Author:        Dag Brattli <dagb@cs.uit.no>
+ * Created at:    Sat Feb 21 18:54:38 1998
+ * Modified at:   Sun Oct 27 22:01:04 2002
+ * Modified by:   Martin Diehl <mad@mdiehl.de>
+ * 
+ *     Copyright (c) 1999 Dag Brattli, <dagb@cs.uit.no>,
+ *     Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>,
+ *     Copyright (c) 2002 Martin Diehl, <mad@mdiehl.de>,
+ *     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.
+ * 
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *     GNU General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License 
+ *     along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *     
+ ********************************************************************/
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+
+#include <net/irda/irda.h>
+
+#include "sir-dev.h"
+
+static int esi_open(struct sir_dev *);
+static int esi_close(struct sir_dev *);
+static int esi_change_speed(struct sir_dev *, unsigned);
+static int esi_reset(struct sir_dev *);
+
+static struct dongle_driver esi = {
+       .owner          = THIS_MODULE,
+       .driver_name    = "JetEye PC ESI-9680 PC",
+       .type           = IRDA_ESI_DONGLE,
+       .open           = esi_open,
+       .close          = esi_close,
+       .reset          = esi_reset,
+       .set_speed      = esi_change_speed,
+};
+
+static int __init esi_sir_init(void)
+{
+       return irda_register_dongle(&esi);
+}
+
+static void __exit esi_sir_cleanup(void)
+{
+       irda_unregister_dongle(&esi);
+}
+
+static int esi_open(struct sir_dev *dev)
+{
+       struct qos_info *qos = &dev->qos;
+
+       /* Power up and set dongle to 9600 baud */
+       sirdev_set_dtr_rts(dev, FALSE, TRUE);
+
+       qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200;
+       qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */
+       irda_qos_bits_to_value(qos);
+
+       /* irda thread waits 50 msec for power settling */
+
+       return 0;
+}
+
+static int esi_close(struct sir_dev *dev)
+{
+       /* Power off dongle */
+       sirdev_set_dtr_rts(dev, FALSE, FALSE);
+
+       return 0;
+}
+
+/*
+ * Function esi_change_speed (task)
+ *
+ * Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle
+ * Apparently (see old esi-driver) no delays are needed here...
+ *
+ */
+static int esi_change_speed(struct sir_dev *dev, unsigned speed)
+{
+       int ret = 0;
+       int dtr, rts;
+       
+       switch (speed) {
+       case 19200:
+               dtr = TRUE;
+               rts = FALSE;
+               break;
+       case 115200:
+               dtr = rts = TRUE;
+               break;
+       default:
+               ret = -EINVAL;
+               speed = 9600;
+               /* fall through */
+       case 9600:
+               dtr = FALSE;
+               rts = TRUE;
+               break;
+       }
+
+       /* Change speed of dongle */
+       sirdev_set_dtr_rts(dev, dtr, rts);
+       dev->speed = speed;
+
+       return ret;
+}
+
+/*
+ * Function esi_reset (task)
+ *
+ *    Reset dongle;
+ *
+ */
+static int esi_reset(struct sir_dev *dev)
+{
+       sirdev_set_dtr_rts(dev, FALSE, FALSE);
+
+       /* Hm, the old esi-driver left the dongle unpowered relying on
+        * the following speed change to repower. This might work for
+        * the esi because we only need the modem lines. However, now the
+        * general rule is reset must bring the dongle to some working
+        * well-known state because speed change might write to registers.
+        * The old esi-driver didn't any delay here - let's hope it' fine.
+        */
+
+       sirdev_set_dtr_rts(dev, FALSE, TRUE);
+       dev->speed = 9600;
+
+       return 0;
+}
+
+MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>");
+MODULE_DESCRIPTION("Extended Systems JetEye PC dongle driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("irda-dongle-1"); /* IRDA_ESI_DONGLE */
+
+module_init(esi_sir_init);
+module_exit(esi_sir_cleanup);
+