ASoC: kirkwood: allow smaller audio periods and smaller number of periods

There is no hardware restriction requiring a minimum of 8 periods, or
a minimum of 2048 bytes in a period.  Let's drop these values so that
userspace has more flexibility in choosing these parameters.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h
index ab21de0..90e32a7 100644 (file)
--- a/sound/soc/kirkwood/kirkwood.h
+++ b/sound/soc/kirkwood/kirkwood.h
@@ -124,9 +124,9 @@
 
 /* Theses values come from the marvell alsa driver */
 /* need to find where they come from               */
-#define KIRKWOOD_SND_MIN_PERIODS               8
+#define KIRKWOOD_SND_MIN_PERIODS               2
 #define KIRKWOOD_SND_MAX_PERIODS               16
-#define KIRKWOOD_SND_MIN_PERIOD_BYTES          0x800
+#define KIRKWOOD_SND_MIN_PERIOD_BYTES          256
 #define KIRKWOOD_SND_MAX_PERIOD_BYTES          0x8000
 #define KIRKWOOD_SND_MAX_BUFFER_BYTES          (KIRKWOOD_SND_MAX_PERIOD_BYTES \
                                                 * KIRKWOOD_SND_MAX_PERIODS)