ASoC: rt1320: Add RT1320 SDCA vendor-specific driver

This is the initial amplifier driver for rt1320.

--
    add class id 1
Signed-off-by: Shuming Fan <shumingf@realtek.com>
v2: add Capture DAI for AEC feedback
v3: add some comments for blind writes/patch_code/calling sdw_slave_read_prop
v4: add comments for different class id
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://msgid.link/r/20240521084625.453554-1-shumingf@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -222,6 +222,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_RT1308_SDW
 	imply SND_SOC_RT1316_SDW
 	imply SND_SOC_RT1318_SDW
+	imply SND_SOC_RT1320_SDW
 	imply SND_SOC_RT9120
 	imply SND_SOC_RTQ9128
 	imply SND_SOC_SDW_MOCKUP
@@ -1575,6 +1576,12 @@ config SND_SOC_RT1318_SDW
 	depends on SOUNDWIRE
 	select REGMAP_SOUNDWIRE
 
+config SND_SOC_RT1320_SDW
+	tristate "Realtek RT1320 Codec - SDW"
+	depends on SOUNDWIRE
+	select REGMAP_SOUNDWIRE
+	select REGMAP_SOUNDWIRE_MBQ
+
 config SND_SOC_RT5514
 	tristate
 	depends on I2C

sound/soc/codecs/Makefile

@@ -222,6 +222,7 @@ snd-soc-rt1308-y := rt1308.o
 snd-soc-rt1308-sdw-y := rt1308-sdw.o
 snd-soc-rt1316-sdw-y := rt1316-sdw.o
 snd-soc-rt1318-sdw-y := rt1318-sdw.o
+snd-soc-rt1320-sdw-y := rt1320-sdw.o
 snd-soc-rt274-y := rt274.o
 snd-soc-rt286-y := rt286.o
 snd-soc-rt298-y := rt298.o
@@ -614,6 +615,7 @@ obj-$(CONFIG_SND_SOC_RT1308)	+= snd-soc-rt1308.o
 obj-$(CONFIG_SND_SOC_RT1308_SDW)	+= snd-soc-rt1308-sdw.o
 obj-$(CONFIG_SND_SOC_RT1316_SDW)	+= snd-soc-rt1316-sdw.o
 obj-$(CONFIG_SND_SOC_RT1318_SDW)	+= snd-soc-rt1318-sdw.o
+obj-$(CONFIG_SND_SOC_RT1320_SDW)	+= snd-soc-rt1320-sdw.o
 obj-$(CONFIG_SND_SOC_RT274)	+= snd-soc-rt274.o
 obj-$(CONFIG_SND_SOC_RT286)	+= snd-soc-rt286.o
 obj-$(CONFIG_SND_SOC_RT298)	+= snd-soc-rt298.o

sound/soc/codecs/rt1320-sdw.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * rt1320-sdw.h -- RT1320 SDCA ALSA SoC audio driver header
+ *
+ * Copyright(c) 2024 Realtek Semiconductor Corp.
+ */
+
+#ifndef __RT1320_SDW_H__
+#define __RT1320_SDW_H__
+
+#include <linux/regmap.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include <linux/soundwire/sdw_registers.h>
+#include <sound/soc.h>
+
+/* imp-defined registers */
+#define RT1320_DEV_VERSION_ID_1 0xc404
+
+#define RT1320_KR0_STATUS_CNT 0x1000f008
+#define RT1320_HIFI_VER_0 0x3fe2e000
+#define RT1320_HIFI_VER_1 0x3fe2e001
+#define RT1320_HIFI_VER_2 0x3fe2e002
+#define RT1320_HIFI_VER_3 0x3fe2e003
+
+/* RT1320 SDCA Control - function number */
+#define FUNC_NUM_AMP 0x04
+
+/* RT1320 SDCA entity */
+#define RT1320_SDCA_ENT0 0x00
+#define RT1320_SDCA_ENT_PDE11 0x2a
+#define RT1320_SDCA_ENT_PDE23 0x33
+#define RT1320_SDCA_ENT_PDE27 0x27
+#define RT1320_SDCA_ENT_FU14 0x32
+#define RT1320_SDCA_ENT_FU21 0x03
+#define RT1320_SDCA_ENT_FU113 0x30
+#define RT1320_SDCA_ENT_CS14 0x13
+#define RT1320_SDCA_ENT_CS21 0x21
+#define RT1320_SDCA_ENT_CS113 0x12
+#define RT1320_SDCA_ENT_SAPU 0x29
+#define RT1320_SDCA_ENT_PPU21 0x04
+
+/* RT1320 SDCA control */
+#define RT1320_SDCA_CTL_SAMPLE_FREQ_INDEX 0x10
+#define RT1320_SDCA_CTL_REQ_POWER_STATE 0x01
+#define RT1320_SDCA_CTL_FU_MUTE 0x01
+#define RT1320_SDCA_CTL_FU_VOLUME 0x02
+#define RT1320_SDCA_CTL_SAPU_PROTECTION_MODE 0x10
+#define RT1320_SDCA_CTL_SAPU_PROTECTION_STATUS 0x11
+#define RT1320_SDCA_CTL_POSTURE_NUMBER 0x10
+#define RT1320_SDCA_CTL_FUNC_STATUS 0x10
+
+/* RT1320 SDCA channel */
+#define CH_01 0x01
+#define CH_02 0x02
+
+/* Function_Status */
+#define FUNCTION_NEEDS_INITIALIZATION		BIT(5)
+
+/* Sample Frequency Index */
+#define RT1320_SDCA_RATE_16000HZ		0x04
+#define RT1320_SDCA_RATE_32000HZ		0x07
+#define RT1320_SDCA_RATE_44100HZ		0x08
+#define RT1320_SDCA_RATE_48000HZ		0x09
+#define RT1320_SDCA_RATE_96000HZ		0x0b
+#define RT1320_SDCA_RATE_192000HZ		0x0d
+
+enum {
+	RT1320_AIF1,
+};
+
+/*
+ * The version id will be useful to distinguish the capability between the different IC versions.
+ * Currently, VA and VB have different DSP FW versions.
+ */
+enum rt1320_version_id {
+	RT1320_VA,
+	RT1320_VB,
+};
+
+#define RT1320_VER_B_ID 0x07392238
+
+struct rt1320_sdw_priv {
+	struct snd_soc_component *component;
+	struct regmap *regmap;
+	struct regmap *mbq_regmap;
+	struct sdw_slave *sdw_slave;
+	struct sdw_bus_params params;
+	bool hw_init;
+	bool first_hw_init;
+	int version_id;
+};
+
+#endif /* __RT1320_SDW_H__ */