ASoC: codecs: lpass-wsa-macro: Add support to WSA Macro

Qualcomm LPASS (Low Power Audio SubSystem) has internal codec
WSA macro block which is used for connecting with WSA Smart
speakers over soundwire.

This patch adds support to the codec part of the WSA Macro block.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20201105113458.12360-3-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -1789,4 +1789,8 @@ config SND_SOC_TPA6130A2
 	tristate "Texas Instruments TPA6130A2 headphone amplifier"
 	depends on I2C
 
+config SND_SOC_LPASS_WSA_MACRO
+	depends on COMMON_CLK
+	tristate "Qualcomm WSA Macro in LPASS(Low Power Audio SubSystem)"
+
 endmenu

sound/soc/codecs/Makefile

@@ -103,6 +103,7 @@ snd-soc-l3-objs := l3.o
 snd-soc-lm4857-objs := lm4857.o
 snd-soc-lm49453-objs := lm49453.o
 snd-soc-lochnagar-sc-objs := lochnagar-sc.o
+snd-soc-lpass-wsa-macro-objs := lpass-wsa-macro.o
 snd-soc-madera-objs := madera.o
 snd-soc-max9759-objs := max9759.o
 snd-soc-max9768-objs := max9768.o
@@ -615,3 +616,4 @@ obj-$(CONFIG_SND_SOC_MAX9877)	+= snd-soc-max9877.o
 obj-$(CONFIG_SND_SOC_MAX98504)	+= snd-soc-max98504.o
 obj-$(CONFIG_SND_SOC_SIMPLE_AMPLIFIER)	+= snd-soc-simple-amplifier.o
 obj-$(CONFIG_SND_SOC_TPA6130A2)	+= snd-soc-tpa6130a2.o
+obj-$(CONFIG_SND_SOC_LPASS_WSA_MACRO)	+= snd-soc-lpass-wsa-macro.o

sound/soc/codecs/lpass-wsa-macro.h

@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __LPASS_WSA_MACRO_H__
+#define __LPASS_WSA_MACRO_H__
+
+/*
+ * Selects compander and smart boost settings
+ * for a given speaker mode
+ */
+enum {
+	WSA_MACRO_SPKR_MODE_DEFAULT,
+	WSA_MACRO_SPKR_MODE_1, /* COMP Gain = 12dB, Smartboost Max = 5.5V */
+};
+
+int wsa_macro_set_spkr_mode(struct snd_soc_component *component, int mode);
+
+#endif /* __LPASS_WSA_MACRO_H__ */