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path: root/drivers/net/irda/esi-sir.c
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Diffstat (limited to 'drivers/net/irda/esi-sir.c')
-rw-r--r--drivers/net/irda/esi-sir.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/net/irda/esi-sir.c b/drivers/net/irda/esi-sir.c
new file mode 100644
index 000000000..019a3e848
--- /dev/null
+++ b/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);
+