ASoC: atmel: add Sound Card driver for ASRC

The main purpose of this Sound Card driver is to enable the use of
SAMA7G5's ASRC with the rest of the available audio peripherals and any
other eventual codecs. DPCMs will be created, based on the number of
ASRC instances. ASRC will be registered as Front-End DAI, while the
other audio peripherals will also have a corresponding Back-End DAI.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>

Author: Codrin Ciubotariu

sound/soc/atmel/Kconfig

@@ -189,4 +189,12 @@ config SND_MCHP_SOC_ASRC
 	  The Asynchronous Sample Rate Converter (ASRC) converts the sample
 	  rate of an incoming audio frame without affecting quality. It
 	  supports input and output sampling rates up to 192 kHz.
+
+config SND_MCHP_SOC_ASRC_CARD
+	tristate "Mirochop ASoC Sound Card driver for boards using ASRC"
+	depends on ARCH_AT91 || COMPILE_TEST
+	depends on SND_ATMEL_SOC && SND_MCHP_SOC_ASRC
+	help
+	  Say Y or M if you want to enable the Sound Card driver with support for
+	  Microchip's ASRC.
 endif

sound/soc/atmel/Makefile

@@ -34,6 +34,7 @@ snd-atmel-soc-classd-objs := atmel-classd.o
 snd-atmel-soc-pdmic-objs := atmel-pdmic.o
 snd-atmel-soc-tse850-pcm5142-objs := tse850-pcm5142.o
 snd-soc-mikroe-proto-objs := mikroe-proto.o
+snd-soc-mchp-asrc-card-objs := mchp-asrc-card.o
 
 obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o
 obj-$(CONFIG_SND_ATMEL_SOC_WM8904) += snd-atmel-soc-wm8904.o
@@ -42,3 +43,4 @@ obj-$(CONFIG_SND_ATMEL_SOC_CLASSD) += snd-atmel-soc-classd.o
 obj-$(CONFIG_SND_ATMEL_SOC_PDMIC) += snd-atmel-soc-pdmic.o
 obj-$(CONFIG_SND_ATMEL_SOC_TSE850_PCM5142) += snd-atmel-soc-tse850-pcm5142.o
 obj-$(CONFIG_SND_SOC_MIKROE_PROTO) += snd-soc-mikroe-proto.o
+obj-$(CONFIG_SND_MCHP_SOC_ASRC_CARD) += snd-soc-mchp-asrc-card.o