ASoC: codecs: Add support for the framer codec

The framer codec interacts with a framer.
It allows to use some of the framer timeslots as audio channels to
transport audio data over the framer E1/T1/J1 lines.
It also reports line carrier detection events through the ALSA jack
detection feature.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://msgid.link/r/20240123165615.250303-2-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -114,6 +114,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_ES8328_I2C
 	imply SND_SOC_ES7134
 	imply SND_SOC_ES7241
+	imply SND_SOC_FRAMER
 	imply SND_SOC_GTM601
 	imply SND_SOC_HDAC_HDMI
 	imply SND_SOC_HDAC_HDA
@@ -1102,6 +1103,20 @@ config SND_SOC_ES8328_SPI
 	depends on SPI_MASTER
 	select SND_SOC_ES8328
 
+config SND_SOC_FRAMER
+	tristate "Framer codec"
+	depends on GENERIC_FRAMER
+	help
+	  Enable support for the framer codec.
+	  The framer codec uses the generic framer infrastructure to transport
+	  some audio data over an analog E1/T1/J1 line.
+	  This codec allows to use some of the time slots available on the TDM
+	  bus on which the framer is connected to transport the audio data.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-soc-framer.
+
+
 config SND_SOC_GTM601
 	tristate 'GTM601 UMTS modem audio codec'
 

sound/soc/codecs/Makefile

@@ -122,6 +122,7 @@ snd-soc-es8326-objs := es8326.o
 snd-soc-es8328-objs := es8328.o
 snd-soc-es8328-i2c-objs := es8328-i2c.o
 snd-soc-es8328-spi-objs := es8328-spi.o
+snd-soc-framer-objs := framer-codec.o
 snd-soc-gtm601-objs := gtm601.o
 snd-soc-hdac-hdmi-objs := hdac_hdmi.o
 snd-soc-hdac-hda-objs := hdac_hda.o
@@ -514,6 +515,7 @@ obj-$(CONFIG_SND_SOC_ES8326)    += snd-soc-es8326.o
 obj-$(CONFIG_SND_SOC_ES8328)	+= snd-soc-es8328.o
 obj-$(CONFIG_SND_SOC_ES8328_I2C)+= snd-soc-es8328-i2c.o
 obj-$(CONFIG_SND_SOC_ES8328_SPI)+= snd-soc-es8328-spi.o
+obj-$(CONFIG_SND_SOC_FRAMER)	+= snd-soc-framer.o
 obj-$(CONFIG_SND_SOC_GTM601)    += snd-soc-gtm601.o
 obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o
 obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o