ASoC: imx-card: Add imx-card machine driver

Add machine driver for i.MX boards, which supports
AK4458/AK5558/AK4497/AK5552 DAC/ADC attached to
SAI interface currently, but these DAC/ADCs are not
only supported codecs. This machine driver is designed
to be a more common machine driver for i.MX platform,
it can support widely cpu dai interface and codec
dai interface.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Mihai Serban <mihai.serban@nxp.com>
Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Link: https://lore.kernel.org/r/1621247488-21412-2-git-send-email-shengjiu.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/Kconfig

@@ -350,6 +350,19 @@ config SND_SOC_IMX_RPMSG
 	  Say Y if you want to add support for SoC audio on an i.MX board with
 	  a rpmsg devices.
 
+config SND_SOC_IMX_CARD
+	tristate "SoC Audio Graph Sound Card support for i.MX boards"
+	depends on OF && I2C
+	select SND_SOC_AK4458
+	select SND_SOC_AK5558
+	select SND_SOC_IMX_PCM_DMA
+	select SND_SOC_FSL_SAI
+	select SND_SIMPLE_CARD_UTILS
+	help
+	  This option enables audio sound card support for i.MX boards
+	  with OF-graph DT bindings.
+	  It also support DPCM of single CPU multi Codec ststem.
+
 endif # SND_IMX_SOC
 
 endmenu

sound/soc/fsl/Makefile

@@ -71,6 +71,7 @@ snd-soc-imx-spdif-objs := imx-spdif.o
 snd-soc-imx-audmix-objs := imx-audmix.o
 snd-soc-imx-hdmi-objs := imx-hdmi.o
 snd-soc-imx-rpmsg-objs := imx-rpmsg.o
+snd-soc-imx-card-objs := imx-card.o
 
 obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
 obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
@@ -79,3 +80,4 @@ obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
 obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o
 obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
 obj-$(CONFIG_SND_SOC_IMX_RPMSG) += snd-soc-imx-rpmsg.o
+obj-$(CONFIG_SND_SOC_IMX_CARD) += snd-soc-imx-card.o