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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5cd1d3f47a
In previous commit, this driver can get to know stream formations at each supported sampling rates. This commit uses it to make PCM rules/constraints and obsoletes hard-coded rules/constraints. For this purpose, this commit adds 'struct snd_oxfw_stream_formation' and snd_oxfw_stream_parse_format() to parse data channel formation of data block. According to datasheet of OXFW970/971, they support 32.0kHz to 196.0kHz. As long as developers investigate, some devices are confirmed to have several formats for the same sampling rate. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
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* oxfw.h - a part of driver for OXFW970/971 based devices
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*
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* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include <linux/device.h>
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#include <linux/firewire.h>
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#include <linux/firewire-constants.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <sound/control.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "../lib.h"
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#include "../fcp.h"
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#include "../packets-buffer.h"
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#include "../iso-resources.h"
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#include "../amdtp.h"
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#include "../cmp.h"
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struct device_info {
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const char *driver_name;
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const char *vendor_name;
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const char *model_name;
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unsigned int mixer_channels;
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u8 mute_fb_id;
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u8 volume_fb_id;
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};
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/* This is an arbitrary number for convinience. */
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#define SND_OXFW_STREAM_FORMAT_ENTRIES 10
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struct snd_oxfw {
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struct snd_card *card;
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struct fw_unit *unit;
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const struct device_info *device_info;
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struct mutex mutex;
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u8 *rx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES];
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bool assumed;
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struct cmp_connection in_conn;
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struct amdtp_stream rx_stream;
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bool mute;
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s16 volume[6];
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s16 volume_min;
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s16 volume_max;
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};
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/*
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* AV/C Stream Format Information Specification 1.1 Working Draft
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* (Apr 2005, 1394TA)
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*/
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int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir,
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unsigned int pid, u8 *format, unsigned int len);
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int avc_stream_get_format(struct fw_unit *unit,
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enum avc_general_plug_dir dir, unsigned int pid,
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u8 *buf, unsigned int *len, unsigned int eid);
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static inline int
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avc_stream_get_format_single(struct fw_unit *unit,
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enum avc_general_plug_dir dir, unsigned int pid,
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u8 *buf, unsigned int *len)
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{
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return avc_stream_get_format(unit, dir, pid, buf, len, 0xff);
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}
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static inline int
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avc_stream_get_format_list(struct fw_unit *unit,
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enum avc_general_plug_dir dir, unsigned int pid,
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u8 *buf, unsigned int *len,
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unsigned int eid)
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{
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return avc_stream_get_format(unit, dir, pid, buf, len, eid);
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}
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/*
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* AV/C Digital Interface Command Set General Specification 4.2
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* (Sep 2004, 1394TA)
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*/
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int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate,
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enum avc_general_plug_dir dir,
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unsigned short pid);
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int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw);
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int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw);
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void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw);
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void snd_oxfw_stream_destroy_simplex(struct snd_oxfw *oxfw);
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void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw);
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struct snd_oxfw_stream_formation {
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unsigned int rate;
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unsigned int pcm;
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unsigned int midi;
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};
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int snd_oxfw_stream_parse_format(u8 *format,
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struct snd_oxfw_stream_formation *formation);
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int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw,
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enum avc_general_plug_dir dir,
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struct snd_oxfw_stream_formation *formation);
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int snd_oxfw_stream_discover(struct snd_oxfw *oxfw);
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int snd_oxfw_create_pcm(struct snd_oxfw *oxfw);
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int snd_oxfw_create_mixer(struct snd_oxfw *oxfw);
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