cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hda_chmap.h (2660B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * For multichannel support
      4 */
      5
      6#ifndef __SOUND_HDA_CHMAP_H
      7#define __SOUND_HDA_CHMAP_H
      8
      9#include <sound/pcm.h>
     10#include <sound/hdaudio.h>
     11
     12
     13#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
     14
     15struct hdac_cea_channel_speaker_allocation {
     16	int ca_index;
     17	int speakers[8];
     18
     19	/* derived values, just for convenience */
     20	int channels;
     21	int spk_mask;
     22};
     23struct hdac_chmap;
     24
     25struct hdac_chmap_ops {
     26	/*
     27	 * Helpers for producing the channel map TLVs. These can be overridden
     28	 * for devices that have non-standard mapping requirements.
     29	 */
     30	int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap,
     31		struct hdac_cea_channel_speaker_allocation *cap, int channels);
     32	void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,
     33		struct hdac_cea_channel_speaker_allocation *cap,
     34		unsigned int *chmap, int channels);
     35
     36	/* check that the user-given chmap is supported */
     37	int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,
     38			int channels, unsigned char *chmap);
     39
     40	int (*get_spk_alloc)(struct hdac_device *hdac, int pcm_idx);
     41
     42	void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
     43					unsigned char *chmap);
     44	void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
     45			unsigned char *chmap, int prepared);
     46	bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
     47
     48	/* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
     49	int (*pin_get_slot_channel)(struct hdac_device *codec,
     50			hda_nid_t pin_nid, int asp_slot);
     51	int (*pin_set_slot_channel)(struct hdac_device *codec,
     52			hda_nid_t pin_nid, int asp_slot, int channel);
     53	void (*set_channel_count)(struct hdac_device *codec,
     54				hda_nid_t cvt_nid, int chs);
     55};
     56
     57struct hdac_chmap {
     58	unsigned int channels_max; /* max over all cvts */
     59	struct hdac_chmap_ops ops;
     60	struct hdac_device *hdac;
     61};
     62
     63void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
     64				struct hdac_chmap *chmap);
     65int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
     66			int channels, bool chmap_set,
     67			bool non_pcm, unsigned char *map);
     68int snd_hdac_get_active_channels(int ca);
     69void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
     70		       hda_nid_t pin_nid, bool non_pcm, int ca,
     71		       int channels, unsigned char *map,
     72		       bool chmap_set);
     73void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
     74struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
     75int snd_hdac_chmap_to_spk_mask(unsigned char c);
     76int snd_hdac_spk_to_chmap(int spk);
     77int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
     78				struct hdac_chmap *chmap);
     79#endif /* __SOUND_HDA_CHMAP_H */