/*
 * Copyright 2007-2012, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Ithamar Adema, ithamar AT unet DOT nl
 */


#include "driver.h"


static status_t
hda_open(const char* name, uint32 flags, void** cookie)
{
        hda_controller* controller = NULL;

        for (uint32 i = 0; i < gNumCards; i++) {
                if (strcmp(gCards[i].devfs_path, name) == 0) {
                        controller = &gCards[i];
                        break;
                }
        }

        if (controller == NULL)
                return ENODEV;

        if (atomic_get(&controller->opened) != 0)
                return B_BUSY;

        status_t status = hda_hw_init(controller);
        if (status != B_OK)
                return status;

        atomic_add(&controller->opened, 1);

        *cookie = controller;

        // optional user-settable buffer frames and count
        get_settings_from_file();

        return B_OK;
}


static status_t
hda_read(void* cookie, off_t position, void* buffer, size_t* numBytes)
{
        *numBytes = 0;
        return B_IO_ERROR;
}


static status_t
hda_write(void* cookie, off_t position, const void* buffer, size_t* numBytes)
{
        *numBytes = 0;
        return B_IO_ERROR;
}


static status_t
hda_control(void* cookie, uint32 op, void* arg, size_t length)
{
        hda_controller* controller = (hda_controller*)cookie;
        if (controller->active_codec != NULL)
                return multi_audio_control(controller->active_codec, op, arg, length);

        return B_BAD_VALUE;
}


static status_t
hda_close(void* cookie)
{
        hda_controller* controller = (hda_controller*)cookie;
        hda_hw_stop(controller);
        atomic_add(&controller->opened, -1);

        return B_OK;
}


static status_t
hda_free(void* cookie)
{
        hda_controller* controller = (hda_controller*)cookie;
        hda_hw_uninit(controller);

        return B_OK;
}


device_hooks gDriverHooks = {
        hda_open,
        hda_close,
        hda_free,
        hda_control,
        hda_read,
        hda_write
};