// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
 */
/*
 * infrastructure for devices connected via I2C
 */

#include <linux/slab.h>
#include "via_aux.h"


struct via_aux_bus *via_aux_probe(struct i2c_adapter *adap)
{
        struct via_aux_bus *bus;

        if (!adap)
                return NULL;

        bus = kmalloc_obj(*bus);
        if (!bus)
                return NULL;

        bus->adap = adap;
        INIT_LIST_HEAD(&bus->drivers);

        via_aux_edid_probe(bus);
        via_aux_vt1636_probe(bus);
        via_aux_vt1632_probe(bus);
        via_aux_vt1631_probe(bus);
        via_aux_vt1625_probe(bus);
        via_aux_vt1622_probe(bus);
        via_aux_vt1621_probe(bus);
        via_aux_sii164_probe(bus);
        via_aux_ch7301_probe(bus);

        return bus;
}

void via_aux_free(struct via_aux_bus *bus)
{
        struct via_aux_drv *pos, *n;

        if (!bus)
                return;

        list_for_each_entry_safe(pos, n, &bus->drivers, chain) {
                if (pos->cleanup)
                        pos->cleanup(pos);

                list_del(&pos->chain);
                kfree(pos->data);
                kfree(pos);
        }

        kfree(bus);
}

const struct fb_videomode *via_aux_get_preferred_mode(struct via_aux_bus *bus)
{
        struct via_aux_drv *pos;
        const struct fb_videomode *mode = NULL;

        if (!bus)
                return NULL;

        list_for_each_entry(pos, &bus->drivers, chain) {
                if (pos->get_preferred_mode)
                        mode = pos->get_preferred_mode(pos);
        }

        return mode;
}