ASoC: core: Add strobe control
Added support for a control that strobes a bit in
a register to high then back to low (or the inverse).
This is typically useful for hardware that requires
strobing a singe bit to trigger some functionality
and where exposing the bit in a normal single control
would require the user to first manually set then
again unset the bit again for the strobe to trigger.
Added convenience macro.
SOC_SINGLE_STROBE
Added accessor implementations.
snd_soc_get_strobe
snd_soc_put_strobe
Signed-off-by: Kristoffer KARLSSON <kristoffer.karlsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index c0656b7..1f38aa1 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -219,6 +219,10 @@
{.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
.invert = xinvert, .min = xmin, .max = xmax} }
+#define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
+ SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
+ snd_soc_get_strobe, snd_soc_put_strobe)
+
/*
* Simplified versions of above macros, declaring a struct and calculating
* ARRAY_SIZE internally
@@ -461,6 +465,10 @@
struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
/**
* struct snd_soc_reg_access - Describes whether a given register is