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[ALSA] sb16: add request_firmware()

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Load the CSP programs using request_firmware(), if possible, instead of
using the built-in firmware blobs.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Clemens Ladisch 2006-11-06 09:18:34 +01:00 committed by Jaroslav Kysela
parent 219e281f46
commit de66d53e46
3 changed files with 68 additions and 8 deletions
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14
include/sound/sb16_csp.h
View file

@ -114,9 +114,21 @@ struct snd_sb_csp_info {
#ifdef __KERNEL__
#include "sb.h"
#include "hwdep.h"
#include <linux/firmware.h>
struct snd_sb_csp;
/* indices for the known CSP programs */
enum {
CSP_PROGRAM_MULAW,
CSP_PROGRAM_ALAW,
CSP_PROGRAM_ADPCM_INIT,
CSP_PROGRAM_ADPCM_PLAYBACK,
CSP_PROGRAM_ADPCM_CAPTURE,
CSP_PROGRAM_COUNT
};
/*
* CSP operators
*/
@ -159,6 +171,8 @@ struct snd_sb_csp {
struct snd_kcontrol *qsound_space;
struct mutex access_mutex; /* locking */
const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
};
int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);

1
sound/isa/Kconfig
View file

@ -358,6 +358,7 @@ config SND_SBAWE
config SND_SB16_CSP
bool "Sound Blaster 16/AWE CSP support"
depends on (SND_SB16 || SND_SBAWE) && (BROKEN || !PPC)
select FW_LOADER
help
Say Y here to include support for the CSP core. This special
coprocessor can do variable tasks like various compression and

59
sound/isa/sb/sb16_csp.c
View file

@ -161,10 +161,13 @@ int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
*/
static void snd_sb_csp_free(struct snd_hwdep *hwdep)
{
int i;
struct snd_sb_csp *p = hwdep->private_data;
if (p) {
if (p->running & SNDRV_SB_CSP_ST_RUNNING)
snd_sb_csp_stop(p);
for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
release_firmware(p->csp_programs[i]);
kfree(p);
}
}
@ -687,8 +690,50 @@ static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __use
return err;
}
#define FIRMWARE_IN_THE_KERNEL
#ifdef FIRMWARE_IN_THE_KERNEL
#include "sb16_csp_codecs.h"
static const struct firmware snd_sb_csp_static_programs[] = {
{ .data = mulaw_main, .size = sizeof mulaw_main },
{ .data = alaw_main, .size = sizeof alaw_main },
{ .data = ima_adpcm_init, .size = sizeof ima_adpcm_init },
{ .data = ima_adpcm_playback, .size = sizeof ima_adpcm_playback },
{ .data = ima_adpcm_capture, .size = sizeof ima_adpcm_capture },
};
#endif
static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
{
static const char *const names[] = {
"sb16/mulaw_main.csp",
"sb16/alaw_main.csp",
"sb16/ima_adpcm_init.csp",
"sb16/ima_adpcm_playback.csp",
"sb16/ima_adpcm_capture.csp",
};
const struct firmware *program;
int err;
BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
program = p->csp_programs[index];
if (!program) {
err = request_firmware(&program, names[index],
p->chip->card->dev);
if (err >= 0)
p->csp_programs[index] = program;
else {
#ifdef FIRMWARE_IN_THE_KERNEL
program = &snd_sb_csp_static_programs[index];
#else
return err;
#endif
}
}
return snd_sb_csp_load(p, program->data, program->size, flags);
}
/*
* autoload hardware codec if necessary
* return 0 if CSP is loaded and ready to run (p->running != 0)
@ -708,27 +753,27 @@ static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec
} else {
switch (pcm_sfmt) {
case SNDRV_PCM_FORMAT_MU_LAW:
err = snd_sb_csp_load(p, &mulaw_main[0], sizeof(mulaw_main), 0);
err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
break;
case SNDRV_PCM_FORMAT_A_LAW:
err = snd_sb_csp_load(p, &alaw_main[0], sizeof(alaw_main), 0);
err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
break;
case SNDRV_PCM_FORMAT_IMA_ADPCM:
err = snd_sb_csp_load(p, &ima_adpcm_init[0], sizeof(ima_adpcm_init),
err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
SNDRV_SB_CSP_LOAD_INITBLOCK);
if (err)
break;
if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
err = snd_sb_csp_load(p, &ima_adpcm_playback[0],
sizeof(ima_adpcm_playback), 0);
err = snd_sb_csp_firmware_load
(p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
} else {
err = snd_sb_csp_load(p, &ima_adpcm_capture[0],
sizeof(ima_adpcm_capture), 0);
err = snd_sb_csp_firmware_load
(p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
}
p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;