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5b59d8098d
OXFW970/971 may supports AV/C Stream Format Information Specification 1.1 Working Draft (Apr 2005, 1394TA). By using this command, drivers can get to know stream formations which device supports. This commit adds 'EXTENDED STREAM FORMAT INFORMATION' command. This command has two subfunctions, 'SINGLE' and 'LIST'. Drivers can use 'SINGLE' subfunction to know/set current formation of AMDTP stream, Drivers can use 'LIST' subfunction to know an available formation of AMDTP stream in a certain sampling rate. But some devices don't implement the 'LIST' subfunction. So this commit uses an assumption that 'if they don't implement it, they don't change stream formation depending on current each sampling rate'. With this assumption, this driver generates formations for such devices by: 1.getting current formation by SINGLE subfunction 2.getting supported sampling rates 3.applying current formation for all of supported sampling rates Followed commit implements a parser of this format information. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
96 lines
2.7 KiB
C
96 lines
2.7 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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int (*pcm_constraints)(struct snd_pcm_runtime *runtime);
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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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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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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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int firewave_constraints(struct snd_pcm_runtime *runtime);
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int lacie_speakers_constraints(struct snd_pcm_runtime *runtime);
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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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