| 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 | |
| 13 | struct 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(size: sizeof(*bus), GFP_KERNEL); |
| 21 | if (!bus) |
| 22 | return NULL; |
| 23 | |
| 24 | bus->adap = adap; |
| 25 | INIT_LIST_HEAD(list: &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 | |
| 40 | void 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(entry: &pos->chain); |
| 52 | kfree(objp: pos->data); |
| 53 | kfree(objp: pos); |
| 54 | } |
| 55 | |
| 56 | kfree(objp: bus); |
| 57 | } |
| 58 | |
| 59 | const 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 |