LXR linux/drivers/video/fbdev/via/via

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
   4 */
   5/*
   6 * infrastructure for devices connected via I2C
   7 */
   8
   9#include <linux/slab.h>
  10#include "via_aux.h"
  11
  12
  13struct via_aux_bus *via_aux_probe(struct i2c_adapter *adap)
  14{
  15        struct via_aux_bus *bus;
  16
  17        if (!adap)
  18                return NULL;
  19
  20        bus = kmalloc(sizeof(*bus), GFP_KERNEL);
  21        if (!bus)
  22                return NULL;
  23
  24        bus->adap = adap;
  25        INIT_LIST_HEAD(&bus->drivers);
  26
  27        via_aux_edid_probe(bus);
  28        via_aux_vt1636_probe(bus);
  29        via_aux_vt1632_probe(bus);
  30        via_aux_vt1631_probe(bus);
  31        via_aux_vt1625_probe(bus);
  32        via_aux_vt1622_probe(bus);
  33        via_aux_vt1621_probe(bus);
  34        via_aux_sii164_probe(bus);
  35        via_aux_ch7301_probe(bus);
  36
  37        return bus;
  38}
  39
  40void via_aux_free(struct via_aux_bus *bus)
  41{
  42        struct via_aux_drv *pos, *n;
  43
  44        if (!bus)
  45                return;
  46
  47        list_for_each_entry_safe(pos, n, &bus->drivers, chain) {
  48                if (pos->cleanup)
  49                        pos->cleanup(pos);
  50
  51                list_del(&pos->chain);
  52                kfree(pos->data);
  53                kfree(pos);
  54        }
  55
  56        kfree(bus);
  57}
  58
  59const struct fb_videomode *via_aux_get_preferred_mode(struct via_aux_bus *bus)
  60{
  61        struct via_aux_drv *pos;
  62        const struct fb_videomode *mode = NULL;
  63
  64        if (!bus)
  65                return NULL;
  66
  67        list_for_each_entry(pos, &bus->drivers, chain) {
  68                if (pos->get_preferred_mode)
  69                        mode = pos->get_preferred_mode(pos);
  70        }
  71
  72        return mode;
  73}
  74