diff options
| author | Oswald Buddenhagen <oswald.buddenhagen@gmx.de> | 2023-05-18 11:31:34 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-05-18 13:08:23 +0200 |
| commit | 46055699e5f81db8c70946609f445c572983eca5 (patch) | |
| tree | 1e678d1dc54d9434f48cebfcac67686fc2b11916 /include/sound/emu10k1.h | |
| parent | 6797400ef4abb4359c225a207c1f3ca28591f51c (diff) | |
ALSA: emu10k1: introduce and use snd_emu10k1_ptr_write_multiple()
While this nicely denoises the code, the real intent is being able to
write many registers pseudo-atomically, which will come in handy later.
Idea stolen from kX-project.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230518093134.3697955-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/emu10k1.h')
| -rw-r--r-- | include/sound/emu10k1.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h index ee662a1b0dc7..9c5de1f45566 100644 --- a/include/sound/emu10k1.h +++ b/include/sound/emu10k1.h @@ -64,6 +64,9 @@ #define REG_VAL_GET(r, v) ((v & REG_MASK(r)) >> REG_SHIFT(r)) #define REG_VAL_PUT(r, v) ((v) << REG_SHIFT(r)) +// List terminator for snd_emu10k1_ptr_write_multiple() +#define REGLIST_END ~0 + // Audigy specify registers are prefixed with 'A_' /************************************************************************************************/ @@ -1793,6 +1796,7 @@ int snd_emu10k1_done(struct snd_emu10k1 * emu); /* I/O functions */ unsigned int snd_emu10k1_ptr_read(struct snd_emu10k1 * emu, unsigned int reg, unsigned int chn); void snd_emu10k1_ptr_write(struct snd_emu10k1 *emu, unsigned int reg, unsigned int chn, unsigned int data); +void snd_emu10k1_ptr_write_multiple(struct snd_emu10k1 *emu, unsigned int chn, ...); unsigned int snd_emu10k1_ptr20_read(struct snd_emu10k1 * emu, unsigned int reg, unsigned int chn); void snd_emu10k1_ptr20_write(struct snd_emu10k1 *emu, unsigned int reg, unsigned int chn, unsigned int data); int snd_emu10k1_spi_write(struct snd_emu10k1 * emu, unsigned int data); |