Staging: sst: Intel SST audio driver

This is the Intel SST audio driver.

As compared to the previous versions it has all the printks and other stuff
noted cleaned up and more hardware support. The Aava support is disabled in
this patch (is_aava resolves to 0) because the Aava board detection logic
is not yet upstream.

The driver itself is a combination of a traditional ALSA driver and a
hardware assisted offload driver which can play audio while the processor
is asleep but which can't do all the more interactive stuff.

In the general case most software would use the ALSA interface, but the
other interface is needed for certain classes of use such as music playback
on highly power consumption sensitive devices.

This is going to staging primarily because it depends upon the staging memrar
driver.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Harsha Priya <priya.harsha@intel.com>
[Merged together and tweaked for -next]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/Kconfig

@@ -171,5 +171,7 @@ source "drivers/staging/bcm/Kconfig"
 
 source "drivers/staging/ft1000/Kconfig"
 
+source "drivers/staging/intel_sst/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING

drivers/staging/Makefile

@@ -66,3 +66,4 @@ obj-$(CONFIG_ATH6K_LEGACY)	+= ath6kl/
 obj-$(CONFIG_USB_ENESTORAGE)	+= keucr/
 obj-$(CONFIG_BCM_WIMAX)	+= bcm/
 obj-$(CONFIG_FT1000)		+= ft1000/
+obj-$(CONFIG_SND_INTEL_SST)		+= intel_sst/

drivers/staging/intel_sst/Kconfig

@@ -0,0 +1,18 @@
+config SND_INTEL_SST
+	tristate "Intel SST (LPE) Driver"
+	depends on X86 && INTEL_SCU_IPC
+	default n
+	help
+	  Say Y here to include support for the Intel(R) MID SST DSP driver
+	  On other PC platforms if you are unsure answer 'N'
+
+config SND_INTELMID
+	tristate "Intel MID sound card driver"
+	select SND_PCM
+	select SND_SEQUENCER
+	select SND_JACK
+	depends on SND_INTEL_SST
+	default n
+	help
+	  Say Y here to include support for the Intel(R) MID sound card driver
+	  On other PC platforms if you are unsure answer 'N'

drivers/staging/intel_sst/Makefile

@@ -0,0 +1,7 @@
+#
+# Makefile for Intel MID Audio drivers
+#
+snd-intel-sst-objs := intel_sst.o intel_sst_ipc.o intel_sst_stream.o intel_sst_drv_interface.o intel_sst_dsp.o intel_sst_pvt.o intel_sst_stream_encoded.o intel_sst_app_interface.o
+snd-intelmid-objs := intelmid.o intelmid_msic_control.o intelmid_ctrl.o intelmid_pvt.o intelmid_v0_control.o intelmid_v1_control.o intelmid_v2_control.o
+obj-$(CONFIG_SND_INTEL_SST) += snd-intel-sst.o
+obj-$(CONFIG_SND_INTELMID) += snd-intelmid.o

drivers/staging/intel_sst/TODO

@@ -0,0 +1,12 @@
+TODO
+----
+
+Get the memrar driver cleaned up and upstream (dependancy blocking SST)
+Get the jack header entries accepted
+Review the printks and kill off any left over ST_ERR: messages
+Review the misc device ioctls for 32/64bit safety and sanity
+Review the misc device ioctls for size safety depending on config and decide
+	if space/unused areas should be left
+
+Anything the sound folks turn up on full review
+