patch-2.4.14 linux/drivers/net/irda/ep7211_ir.c

• Lines: 130
• Date: Thu Oct 25 13:53:47 2001
• Orig file: v2.4.13/linux/drivers/net/irda/ep7211_ir.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.13/linux/drivers/net/irda/ep7211_ir.c linux/drivers/net/irda/ep7211_ir.c
@@ -0,0 +1,129 @@
+/*
+ * IR port driver for the Cirrus Logic EP7211 processor.
+ *
+ * Copyright 2001, Blue Mug Inc.  All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/tty.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+
+#include <net/irda/irda.h>
+#include <net/irda/irmod.h>
+#include <net/irda/irda_device.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#define MIN_DELAY 25      /* 15 us, but wait a little more to be sure */
+#define MAX_DELAY 10000   /* 1 ms */
+
+static void ep7211_ir_open(dongle_t *self, struct qos_info *qos);
+static void ep7211_ir_close(dongle_t *self);
+static int  ep7211_ir_change_speed(struct irda_task *task);
+static int  ep7211_ir_reset(struct irda_task *task);
+
+static struct dongle_reg dongle = {
+	Q_NULL,
+	IRDA_EP7211_IR,
+	ep7211_ir_open,
+	ep7211_ir_close,
+	ep7211_ir_reset,
+	ep7211_ir_change_speed,
+};
+
+static void ep7211_ir_open(dongle_t *self, struct qos_info *qos)
+{
+	unsigned int syscon1, flags;
+
+	save_flags(flags); cli();
+
+	/* Turn on the SIR encoder. */
+	syscon1 = clps_readl(SYSCON1);
+	syscon1 |= SYSCON1_SIREN;
+	clps_writel(syscon1, SYSCON1);
+
+	/* XXX: We should disable modem status interrupts on the first
+		UART (interrupt #14). */
+
+	restore_flags(flags);
+
+	MOD_INC_USE_COUNT;
+}
+
+static void ep7211_ir_close(dongle_t *self)
+{
+	unsigned int syscon1, flags;
+
+	save_flags(flags); cli();
+
+	/* Turn off the SIR encoder. */
+	syscon1 = clps_readl(SYSCON1);
+	syscon1 &= ~SYSCON1_SIREN;
+	clps_writel(syscon1, SYSCON1);
+
+	/* XXX: If we've disabled the modem status interrupts, we should
+		reset them back to their original state. */
+
+	restore_flags(flags);
+
+	MOD_DEC_USE_COUNT;
+}
+
+/*
+ * Function ep7211_ir_change_speed (task)
+ *
+ *    Change speed of the EP7211 I/R port. We don't really have to do anything
+ *    for the EP7211 as long as the rate is being changed at the serial port
+ *    level.
+ */
+static int ep7211_ir_change_speed(struct irda_task *task)
+{
+	irda_task_next_state(task, IRDA_TASK_DONE);
+	return 0;
+}
+
+/*
+ * Function ep7211_ir_reset (task)
+ *
+ *      Reset the EP7211 I/R. We don't really have to do anything.
+ *
+ */
+static int ep7211_ir_reset(struct irda_task *task)
+{
+	irda_task_next_state(task, IRDA_TASK_DONE);
+	return 0;
+}
+
+/*
+ * Function ep7211_ir_init(void)
+ *
+ *    Initialize EP7211 I/R module
+ *
+ */
+int __init ep7211_ir_init(void)
+{
+	return irda_device_register_dongle(&dongle);
+}
+
+/*
+ * Function ep7211_ir_cleanup(void)
+ *
+ *    Cleanup EP7211 I/R module
+ *
+ */
+static void __exit ep7211_ir_cleanup(void)
+{
+	irda_device_unregister_dongle(&dongle);
+}
+
+MODULE_AUTHOR("Jon McClintock <jonm@bluemug.com>");
+MODULE_DESCRIPTION("EP7211 I/R driver");
+MODULE_LICENSE("GPL");
+		
+#ifdef MODULE
+module_init(ep7211_ir_init);
+#endif /* MODULE */
+module_exit(ep7211_ir_cleanup);