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ALSA: firewire-lib: macro arrangement for code cleanup 

Some macros include my misunderstanding for IEC 61883-1 or -6.
Additionally, some fixed values appear on codes.

This commit replaces these with macros with proper names.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2015-05-22 23:21:12 +09:00 committed by Takashi Iwai
parent 29bcae2081
commit 9a2820c118
1 changed files with 20 additions and 14 deletions
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34
sound/firewire/amdtp.c
View File

@ -40,24 +40,28 @@
#define TAG_CIP 1
/* common isochronous packet header parameters */
#define CIP_EOH (1u << 31)
#define CIP_EOH_SHIFT 31
#define CIP_EOH (1u << CIP_EOH_SHIFT)
#define CIP_EOH_MASK 0x80000000
#define CIP_FMT_AM (0x10 << 24)
#define CIP_SID_SHIFT 24
#define CIP_SID_MASK 0x3f000000
#define CIP_DBS_MASK 0x00ff0000
#define CIP_DBS_SHIFT 16
#define CIP_DBC_MASK 0x000000ff
#define CIP_FMT_SHIFT 24
#define CIP_FMT_MASK 0x3f000000
#define CIP_FDF_MASK 0x00ff0000
#define CIP_FDF_SHIFT 16
#define CIP_SYT_MASK 0x0000ffff
#define CIP_SYT_NO_INFO 0xffff
#define CIP_FDF_MASK 0x00ff0000
#define CIP_FDF_SFC_SHIFT 16
/*
* Audio and Music transfer protocol specific parameters
* only "Clock-based rate control mode" is supported
*/
#define AMDTP_FDF_AM824 (0 << (CIP_FDF_SFC_SHIFT + 3))
#define CIP_FMT_AM (0x10 << CIP_FMT_SHIFT)
#define AMDTP_FDF_AM824 (0 << (CIP_FDF_SHIFT + 3))
#define AMDTP_FDF_NO_DATA 0xff
#define AMDTP_DBS_MASK 0x00ff0000
#define AMDTP_DBS_SHIFT 16
#define AMDTP_DBC_MASK 0x000000ff
/* TODO: make these configurable */
#define INTERRUPT_INTERVAL 16
@ -656,10 +660,10 @@ static int handle_out_packet(struct amdtp_stream *s, unsigned int data_blocks,
buffer = s->buffer.packets[s->packet_index].buffer;
buffer[0] = cpu_to_be32(ACCESS_ONCE(s->source_node_id_field) |
(s->data_block_quadlets << AMDTP_DBS_SHIFT) |
(s->data_block_quadlets << CIP_DBS_SHIFT) |
s->data_block_counter);
buffer[1] = cpu_to_be32(CIP_EOH | CIP_FMT_AM | AMDTP_FDF_AM824 |
(s->sfc << CIP_FDF_SFC_SHIFT) | syt);
(s->sfc << CIP_FDF_SHIFT) | syt);
buffer += 2;
pcm = ACCESS_ONCE(s->pcm);
@ -712,11 +716,11 @@ static int handle_in_packet(struct amdtp_stream *s,
/* Calculate data blocks */
if (payload_quadlets < 3 ||
((cip_header[1] & CIP_FDF_MASK) ==
(AMDTP_FDF_NO_DATA << CIP_FDF_SFC_SHIFT))) {
(AMDTP_FDF_NO_DATA << CIP_FDF_SHIFT))) {
data_blocks = 0;
} else {
data_block_quadlets =
(cip_header[0] & AMDTP_DBS_MASK) >> AMDTP_DBS_SHIFT;
(cip_header[0] & CIP_DBS_MASK) >> CIP_DBS_SHIFT;
/* avoid division by zero */
if (data_block_quadlets == 0) {
dev_info_ratelimited(&s->unit->device,
@ -731,7 +735,7 @@ static int handle_in_packet(struct amdtp_stream *s,
}
/* Check data block counter continuity */
data_block_counter = cip_header[0] & AMDTP_DBC_MASK;
data_block_counter = cip_header[0] & CIP_DBC_MASK;
if (data_blocks == 0 && (s->flags & CIP_EMPTY_HAS_WRONG_DBC) &&
s->data_block_counter != UINT_MAX)
data_block_counter = s->data_block_counter;
@ -1050,8 +1054,10 @@ EXPORT_SYMBOL(amdtp_stream_pcm_pointer);
*/
void amdtp_stream_update(struct amdtp_stream *s)
{
/* Precomputing. */
ACCESS_ONCE(s->source_node_id_field) =
(fw_parent_device(s->unit)->card->node_id & 0x3f) << 24;
(fw_parent_device(s->unit)->card->node_id << CIP_SID_SHIFT) &
CIP_SID_MASK;
}
EXPORT_SYMBOL(amdtp_stream_update);