ep7211-sir.c

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/*
 * IR port driver for the Cirrus Logic EP7211 processor.
 *
 * Copyright 2001, Blue Mug Inc.  All rights reserved.
 * Copyright 2007, Samuel Ortiz <[email protected]>
 */
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/tty.h>
#include <linux/init.h>
#include <linux/spinlock.h>

#include <net/irda/irda.h>
#include <net/irda/irda_device.h>

#include <asm/io.h>
#include <mach/hardware.h>

#include "sir-dev.h"

#define MIN_DELAY 25      /* 15 us, but wait a little more to be sure */
#define MAX_DELAY 10000   /* 1 ms */

static int ep7211_open(struct sir_dev *dev);
static int ep7211_close(struct sir_dev *dev);
static int ep7211_change_speed(struct sir_dev *dev, unsigned speed);
static int ep7211_reset(struct sir_dev *dev);

static struct dongle_driver ep7211 = {
    .owner      = THIS_MODULE,
    .driver_name    = "EP7211 IR driver",
    .type       = IRDA_EP7211_DONGLE,
    .open       = ep7211_open,
    .close      = ep7211_close,
    .reset      = ep7211_reset,
    .set_speed  = ep7211_change_speed,
};

static int __init ep7211_sir_init(void)
{
    return irda_register_dongle(&ep7211);
}

static void __exit ep7211_sir_cleanup(void)
{
    irda_unregister_dongle(&ep7211);
}

static int ep7211_open(struct sir_dev *dev)
{
    unsigned int syscon;

    /* Turn on the SIR encoder. */
    syscon = clps_readl(SYSCON1);
    syscon |= SYSCON1_SIREN;
    clps_writel(syscon, SYSCON1);

    return 0;
}

static int ep7211_close(struct sir_dev *dev)
{
    unsigned int syscon;

    /* Turn off the SIR encoder. */
    syscon = clps_readl(SYSCON1);
    syscon &= ~SYSCON1_SIREN;
    clps_writel(syscon, SYSCON1);

    return 0;
}

static int ep7211_change_speed(struct sir_dev *dev, unsigned speed)
{
    return 0;
}

static int ep7211_reset(struct sir_dev *dev)
{
    return 0;
}

MODULE_AUTHOR("Samuel Ortiz <[email protected]>");
MODULE_DESCRIPTION("EP7211 IR dongle driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("irda-dongle-13"); /* IRDA_EP7211_DONGLE */

module_init(ep7211_sir_init);
module_exit(ep7211_sir_cleanup);