[ALSA] ac97 - Suppress power-saving mode on non-supporting drivers
Don't enable power-saving mode on drivers that don't support
it. The supporting drivers set AC97_SCAP_POWER_SAVE to scaps
at creation of ac97 instance.
Currently enable on the following drivers: intel8x0, intel8x0m,
atiixp, atiixp-modem, via82xx and via82xx-modem.
Also, a bit clean up of power-saving stuff:
- Don't create an own workq
- Remove superfluous ifdefs
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 5f7c78d..5d3f0d8 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -375,6 +375,7 @@
#define AC97_SCAP_DETECT_BY_VENDOR (1<<8) /* use vendor registers for read tests */
#define AC97_SCAP_NO_SPDIF (1<<9) /* don't build SPDIF controls */
#define AC97_SCAP_EAPD_LED (1<<10) /* EAPD as mute LED */
+#define AC97_SCAP_POWER_SAVE (1<<11) /* capable for aggresive power-saving */
/* ac97->flags */
#define AC97_HAS_PC_BEEP (1<<0) /* force PC Speaker usage */
@@ -511,7 +512,6 @@
#ifdef CONFIG_SND_AC97_POWER_SAVE
unsigned int power_up; /* power states */
- struct workqueue_struct *power_workq;
struct delayed_work power_work;
#endif
struct device dev;