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ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver

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Add a driver for two playback-only FireWire devices based on the OXFW970
chip.

v2: better AMDTP API abstraction; fix fw_unit leak; small fixes
v3: cache the iPCR value
v4: FireWave constraints; fix fw_device reference counting;
    fix PCR caching; small changes and fixes
v5: volume/mute support; fix crashing due to pcm stop races
v6: fix build; one-channel volume for LaCie
v7: use signed values to make volume (range checks) work; fix function
    block IDs for volume/mute; always use channel 0 for LaCie volume

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Jay Fenlason <fenlason@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch 2011-03-15 07:53:21 +01:00 • committed by Takashi Iwai
parent a5abba989d
commit 31ef9134eb
20 changed files with 2651 additions and 4 deletions
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7
include/linux/firewire.h
View file

@ -42,6 +42,10 @@
#define CSR_BROADCAST_CHANNEL 0x234
#define CSR_CONFIG_ROM 0x400
#define CSR_CONFIG_ROM_END 0x800
#define CSR_OMPR 0x900
#define CSR_OPCR(i) (0x904 + (i) * 4)
#define CSR_IMPR 0x980
#define CSR_IPCR(i) (0x984 + (i) * 4)
#define CSR_FCP_COMMAND 0xB00
#define CSR_FCP_RESPONSE 0xD00
#define CSR_FCP_END 0xF00
@ -441,5 +445,8 @@ int fw_iso_context_start(struct fw_iso_context *ctx,
int cycle, int sync, int tags);
int fw_iso_context_stop(struct fw_iso_context *ctx);
void fw_iso_context_destroy(struct fw_iso_context *ctx);
void fw_iso_resource_manage(struct fw_card *card, int generation,
u64 channels_mask, int *channel, int *bandwidth,
bool allocate, __be32 buffer[2]);
#endif /* _LINUX_FIREWIRE_H */