| Robert Jarzmik | 74426fb | 2017-09-02 21:54:04 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/list.h> |
| 10 | #include <linux/slab.h> |
| 11 | #include <sound/ac97/codec.h> |
| 12 | #include <sound/ac97/compat.h> |
| 13 | #include <sound/ac97/controller.h> |
| 14 | #include <sound/soc.h> |
| 15 | |
| 16 | #include "ac97_core.h" |
| 17 | |
| 18 | static void compat_ac97_reset(struct snd_ac97 *ac97) |
| 19 | { |
| 20 | struct ac97_codec_device *adev = to_ac97_device(ac97->private_data); |
| 21 | struct ac97_controller *actrl = adev->ac97_ctrl; |
| 22 | |
| 23 | if (actrl->ops->reset) |
| 24 | actrl->ops->reset(actrl); |
| 25 | } |
| 26 | |
| 27 | static void compat_ac97_warm_reset(struct snd_ac97 *ac97) |
| 28 | { |
| 29 | struct ac97_codec_device *adev = to_ac97_device(ac97->private_data); |
| 30 | struct ac97_controller *actrl = adev->ac97_ctrl; |
| 31 | |
| 32 | if (actrl->ops->warm_reset) |
| 33 | actrl->ops->warm_reset(actrl); |
| 34 | } |
| 35 | |
| 36 | static void compat_ac97_write(struct snd_ac97 *ac97, unsigned short reg, |
| 37 | unsigned short val) |
| 38 | { |
| 39 | struct ac97_codec_device *adev = to_ac97_device(ac97->private_data); |
| 40 | struct ac97_controller *actrl = adev->ac97_ctrl; |
| 41 | |
| 42 | actrl->ops->write(actrl, ac97->num, reg, val); |
| 43 | } |
| 44 | |
| 45 | static unsigned short compat_ac97_read(struct snd_ac97 *ac97, |
| 46 | unsigned short reg) |
| 47 | { |
| 48 | struct ac97_codec_device *adev = to_ac97_device(ac97->private_data); |
| 49 | struct ac97_controller *actrl = adev->ac97_ctrl; |
| 50 | |
| 51 | return actrl->ops->read(actrl, ac97->num, reg); |
| 52 | } |
| 53 | |
| 54 | static struct snd_ac97_bus_ops compat_snd_ac97_bus_ops = { |
| 55 | .reset = compat_ac97_reset, |
| 56 | .warm_reset = compat_ac97_warm_reset, |
| 57 | .write = compat_ac97_write, |
| 58 | .read = compat_ac97_read, |
| 59 | }; |
| 60 | |
| 61 | static struct snd_ac97_bus compat_soc_ac97_bus = { |
| 62 | .ops = &compat_snd_ac97_bus_ops, |
| 63 | }; |
| 64 | |
| 65 | struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev) |
| 66 | { |
| 67 | struct snd_ac97 *ac97; |
| 68 | |
| 69 | ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); |
| 70 | if (ac97 == NULL) |
| 71 | return ERR_PTR(-ENOMEM); |
| 72 | |
| 73 | ac97->dev = adev->dev; |
| 74 | ac97->private_data = adev; |
| 75 | ac97->bus = &compat_soc_ac97_bus; |
| 76 | return ac97; |
| 77 | } |
| 78 | EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc); |
| 79 | |
| 80 | void snd_ac97_compat_release(struct snd_ac97 *ac97) |
| 81 | { |
| 82 | kfree(ac97); |
| 83 | } |
| 84 | EXPORT_SYMBOL_GPL(snd_ac97_compat_release); |
| 85 | |
| 86 | int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id, |
| 87 | unsigned int id_mask) |
| 88 | { |
| 89 | struct ac97_codec_device *adev = to_ac97_device(ac97->private_data); |
| 90 | struct ac97_controller *actrl = adev->ac97_ctrl; |
| 91 | unsigned int scanned; |
| 92 | |
| 93 | if (try_warm) { |
| 94 | compat_ac97_warm_reset(ac97); |
| 95 | scanned = snd_ac97_bus_scan_one(actrl, adev->num); |
| 96 | if (ac97_ids_match(scanned, adev->vendor_id, id_mask)) |
| 97 | return 1; |
| 98 | } |
| 99 | |
| 100 | compat_ac97_reset(ac97); |
| 101 | compat_ac97_warm_reset(ac97); |
| 102 | scanned = snd_ac97_bus_scan_one(actrl, adev->num); |
| 103 | if (ac97_ids_match(scanned, adev->vendor_id, id_mask)) |
| 104 | return 0; |
| 105 | |
| 106 | return -ENODEV; |
| 107 | } |
| 108 | EXPORT_SYMBOL_GPL(snd_ac97_reset); |