Message-Id: <20201103172226.4278-5-yung-chuan.liao@linux.intel.com>
Date:   Wed,  4 Nov 2020 01:22:25 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        broonie@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
        ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        mengdong.lin@...el.com, bard.liao@...el.com
Subject: [PATCH 4/5] ASoC/SoundWire: rt1316: Add RT1316 SDCA vendor-specific driver

From: Shuming Fan <shumingf@...ltek.com>

This is the initial amplifier driver for rt1316 SDCA version.

Signed-off-by: Shuming Fan <shumingf@...ltek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 sound/soc/codecs/Kconfig      |   6 +
 sound/soc/codecs/Makefile     |   2 +
 sound/soc/codecs/rt1316-sdw.c | 756 ++++++++++++++++++++++++++++++++++
 sound/soc/codecs/rt1316-sdw.h | 115 ++++++
 4 files changed, 879 insertions(+)
 create mode 100644 sound/soc/codecs/rt1316-sdw.c
 create mode 100644 sound/soc/codecs/rt1316-sdw.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index b80d07df5b55..08582d002b90 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -179,6 +179,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_RT715_SDW
 	imply SND_SOC_RT715_SDCA_SDW
 	imply SND_SOC_RT1308_SDW
+	imply SND_SOC_RT1316_SDW
 	imply SND_SOC_SGTL5000
 	imply SND_SOC_SI476X
 	imply SND_SOC_SIMPLE_AMPLIFIER
@@ -1110,6 +1111,11 @@ config SND_SOC_RT1308_SDW
 	depends on I2C && SOUNDWIRE
 	select REGMAP_SOUNDWIRE
 
+config SND_SOC_RT1316_SDW
+	tristate "Realtek RT1316 Codec - SDW"
+	depends on SOUNDWIRE
+	select REGMAP_SOUNDWIRE
+
 config SND_SOC_RT5514
 	tristate
 	depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index b1683403afb3..601bbb8b46e7 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -164,6 +164,7 @@ snd-soc-rt1015p-objs := rt1015p.o
 snd-soc-rt1305-objs := rt1305.o
 snd-soc-rt1308-objs := rt1308.o
 snd-soc-rt1308-sdw-objs := rt1308-sdw.o
+snd-soc-rt1316-sdw-objs := rt1316-sdw.o
 snd-soc-rt274-objs := rt274.o
 snd-soc-rt286-objs := rt286.o
 snd-soc-rt298-objs := rt298.o
@@ -474,6 +475,7 @@ obj-$(CONFIG_SND_SOC_RT1015P)	+= snd-soc-rt1015p.o
 obj-$(CONFIG_SND_SOC_RT1305)	+= snd-soc-rt1305.o
 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_RT274)	+= snd-soc-rt274.o
 obj-$(CONFIG_SND_SOC_RT286)	+= snd-soc-rt286.o
 obj-$(CONFIG_SND_SOC_RT298)	+= snd-soc-rt298.o
diff --git a/sound/soc/codecs/rt1316-sdw.c b/sound/soc/codecs/rt1316-sdw.c
new file mode 100644
index 000000000000..145ffb8cd1ca
--- /dev/null
+++ b/sound/soc/codecs/rt1316-sdw.c
@@ -0,0 +1,756 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// rt1316-sdw.c -- rt1316 SDCA ALSA SoC amplifier audio driver
+//
+// Copyright(c) 2020 Realtek Semiconductor Corp.
+//
+//
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/pm_runtime.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include "rt1316-sdw.h"
+
+static bool rt1316_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0x2f0a:
+	case 0x2f36:
+	case 0x3203 ... 0x320e:
+	case 0xc000 ... 0xc7b4:
+	case 0xcf00 ... 0xcf03:
+	case 0xd101 ... 0xd103:
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0):
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_L):
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_R):
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE23, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE27, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE22, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
+	case SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE24, RT1316_SDCA_CTL_REQ_POWER_STATE, 0):
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rt1316_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0xc000:
+	case 0xc093:
+	case 0xc09d:
+	case 0xc0a3:
+	case 0xc201:
+	case 0xc427 ... 0xc428:
+	case 0xd102:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config rt1316_sdw_regmap = {
+	.reg_bits = 32,
+	.val_bits = 8,
+	.readable_reg = rt1316_readable_register,
+	.volatile_reg = rt1316_volatile_register,
+	.max_register = 0x4108ffff,
+	.reg_defaults = rt1316_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(rt1316_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+	.use_single_read = true,
+	.use_single_write = true,
+};
+
+static int rt1316_read_prop(struct sdw_slave *slave)
+{
+	struct sdw_slave_prop *prop = &slave->prop;
+	int nval;
+	int i, j;
+	u32 bit;
+	unsigned long addr;
+	struct sdw_dpn_prop *dpn;
+
+	prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
+	prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
+	prop->is_sdca = true;
+
+	prop->paging_support = true;
+
+	/* first we need to allocate memory for set bits in port lists */
+	prop->source_ports = 0x04; /* BITMAP: 00000100 */
+	prop->sink_ports = 0x2; /* BITMAP:  00000010 */
+
+	nval = hweight32(prop->source_ports);
+	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
+		sizeof(*prop->src_dpn_prop), GFP_KERNEL);
+	if (!prop->src_dpn_prop)
+		return -ENOMEM;
+
+	i = 0;
+	dpn = prop->src_dpn_prop;
+	addr = prop->source_ports;
+	for_each_set_bit(bit, &addr, 32) {
+		dpn[i].num = bit;
+		dpn[i].type = SDW_DPN_FULL;
+		dpn[i].simple_ch_prep_sm = true;
+		dpn[i].ch_prep_timeout = 10;
+		i++;
+	}
+
+	/* do this again for sink now */
+	nval = hweight32(prop->sink_ports);
+	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
+		sizeof(*prop->sink_dpn_prop), GFP_KERNEL);
+	if (!prop->sink_dpn_prop)
+		return -ENOMEM;
+
+	j = 0;
+	dpn = prop->sink_dpn_prop;
+	addr = prop->sink_ports;
+	for_each_set_bit(bit, &addr, 32) {
+		dpn[j].num = bit;
+		dpn[j].type = SDW_DPN_FULL;
+		dpn[j].simple_ch_prep_sm = true;
+		dpn[j].ch_prep_timeout = 10;
+		j++;
+	}
+
+	/* set the timeout values */
+	prop->clk_stop_timeout = 20;
+
+	dev_dbg(&slave->dev, "%s\n", __func__);
+
+	return 0;
+}
+
+static int rt1316_io_init(struct device *dev, struct sdw_slave *slave)
+{
+	struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
+
+	if (rt1316->hw_init)
+		return 0;
+
+	if (rt1316->first_hw_init) {
+		regcache_cache_only(rt1316->regmap, false);
+		regcache_cache_bypass(rt1316->regmap, true);
+	} else {
+		/*
+		 * PM runtime is only enabled when a Slave reports as Attached
+		 */
+
+		/* set autosuspend parameters */
+		pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
+		pm_runtime_use_autosuspend(&slave->dev);
+
+		/* update count of parent 'active' children */
+		pm_runtime_set_active(&slave->dev);
+
+		/* make sure the device does not suspend immediately */
+		pm_runtime_mark_last_busy(&slave->dev);
+
+		pm_runtime_enable(&slave->dev);
+	}
+
+	pm_runtime_get_noresume(&slave->dev);
+
+	/* sw reset */
+	regmap_write(rt1316->regmap, 0xc000, 0x02);
+
+	/* initial settings - blind write */
+	regmap_write(rt1316->regmap, 0xc710, 0x17);
+	regmap_write(rt1316->regmap, 0xc711, 0x80);
+	regmap_write(rt1316->regmap, 0xc712, 0x26);
+	regmap_write(rt1316->regmap, 0xc713, 0x06);
+	regmap_write(rt1316->regmap, 0xc714, 0x80);
+	regmap_write(rt1316->regmap, 0xc715, 0x06);
+	regmap_write(rt1316->regmap, 0xc702, 0x0a);
+	regmap_write(rt1316->regmap, 0xc703, 0x0a);
+	regmap_write(rt1316->regmap, 0xc001, 0x45);
+	regmap_write(rt1316->regmap, 0xc003, 0x00);
+	regmap_write(rt1316->regmap, 0xc004, 0x11);
+	regmap_write(rt1316->regmap, 0xc005, 0x00);
+	regmap_write(rt1316->regmap, 0xc006, 0x00);
+	regmap_write(rt1316->regmap, 0xc106, 0x00);
+	regmap_write(rt1316->regmap, 0xc007, 0x11);
+	regmap_write(rt1316->regmap, 0xc008, 0x11);
+	regmap_write(rt1316->regmap, 0xc009, 0x00);
+
+	regmap_write(rt1316->regmap, 0x2f0a, 0x00);
+	regmap_write(rt1316->regmap, 0xd101, 0xf0);
+	regmap_write(rt1316->regmap, 0xd103, 0x9b);
+	regmap_write(rt1316->regmap, 0x2f36, 0x8e);
+	regmap_write(rt1316->regmap, 0x3206, 0x80);
+	regmap_write(rt1316->regmap, 0x3211, 0x0b);
+	regmap_write(rt1316->regmap, 0x3216, 0x06);
+	regmap_write(rt1316->regmap, 0xc614, 0x20);
+	regmap_write(rt1316->regmap, 0xc615, 0x0a);
+	regmap_write(rt1316->regmap, 0xc616, 0x02);
+	regmap_write(rt1316->regmap, 0xc617, 0x00);
+	regmap_write(rt1316->regmap, 0xc60b, 0x10);
+	regmap_write(rt1316->regmap, 0xc60e, 0x05);
+	regmap_write(rt1316->regmap, 0xc102, 0x00);
+	regmap_write(rt1316->regmap, 0xc090, 0xb0);
+	regmap_write(rt1316->regmap, 0xc00f, 0x01);
+	regmap_write(rt1316->regmap, 0xc09c, 0x7b);
+
+	regmap_write(rt1316->regmap, 0xc602, 0x07);
+	regmap_write(rt1316->regmap, 0xc603, 0x07);
+	regmap_write(rt1316->regmap, 0xc0a3, 0x71);
+	regmap_write(rt1316->regmap, 0xc00b, 0x30);
+	regmap_write(rt1316->regmap, 0xc093, 0x80);
+	regmap_write(rt1316->regmap, 0xc09d, 0x80);
+	regmap_write(rt1316->regmap, 0xc0b0, 0x77);
+	regmap_write(rt1316->regmap, 0xc010, 0xa5);
+	regmap_write(rt1316->regmap, 0xc050, 0x83);
+	regmap_write(rt1316->regmap, 0x2f55, 0x03);
+	regmap_write(rt1316->regmap, 0x3217, 0xb5);
+	regmap_write(rt1316->regmap, 0x3202, 0x02);
+
+	regmap_write(rt1316->regmap,
+		SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_XU24, RT1316_SDCA_CTL_BYPASS, 0), 0x00);
+
+	/* for IV sense */
+	regmap_write(rt1316->regmap, 0x2232, 0x80);
+	regmap_write(rt1316->regmap, 0xc0b0, 0x77);
+	regmap_write(rt1316->regmap, 0xc011, 0x00);
+	regmap_write(rt1316->regmap, 0xc020, 0x00);
+	regmap_write(rt1316->regmap, 0xc023, 0x00);
+	regmap_write(rt1316->regmap, 0x3101, 0x00);
+	regmap_write(rt1316->regmap, 0x3004, 0xa0);
+	regmap_write(rt1316->regmap, 0x3005, 0xb1);
+	regmap_write(rt1316->regmap, 0xc007, 0x11);
+	regmap_write(rt1316->regmap, 0xc008, 0x11);
+	regmap_write(rt1316->regmap, 0xc009, 0x00);
+	regmap_write(rt1316->regmap, 0xc022, 0xd6);
+	regmap_write(rt1316->regmap, 0xc025, 0xd6);
+
+	regmap_write(rt1316->regmap, 0xd001, 0x03);
+	regmap_write(rt1316->regmap, 0xd002, 0xbf);
+	regmap_write(rt1316->regmap, 0xd003, 0x03);
+	regmap_write(rt1316->regmap, 0xd004, 0xbf);
+
+	if (rt1316->first_hw_init) {
+		regcache_cache_bypass(rt1316->regmap, false);
+		regcache_mark_dirty(rt1316->regmap);
+	} else
+		rt1316->first_hw_init = true;
+
+	/* Mark Slave initialization complete */
+	rt1316->hw_init = true;
+
+	pm_runtime_mark_last_busy(&slave->dev);
+	pm_runtime_put_autosuspend(&slave->dev);
+
+	dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
+	return 0;
+}
+
+static int rt1316_update_status(struct sdw_slave *slave,
+					enum sdw_slave_status status)
+{
+	struct  rt1316_sdw_priv *rt1316 = dev_get_drvdata(&slave->dev);
+
+	/* Update the status */
+	rt1316->status = status;
+
+	if (status == SDW_SLAVE_UNATTACHED)
+		rt1316->hw_init = false;
+
+	if (status == SDW_SLAVE_ATTACHED)
+		regcache_mark_dirty(rt1316->regmap);
+
+	/*
+	 * Perform initialization only if slave status is present and
+	 * hw_init flag is false
+	 */
+	if (rt1316->hw_init || rt1316->status != SDW_SLAVE_ATTACHED)
+		return 0;
+
+	/* perform I/O transfers required for Slave initialization */
+	return rt1316_io_init(&slave->dev, slave);
+}
+
+static int rt1316_classd_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component =
+		snd_soc_dapm_to_component(w->dapm);
+	struct rt1316_sdw_priv *rt1316 = snd_soc_component_get_drvdata(component);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE23,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS0);
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE27,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS0);
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE22,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS0);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE23,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS3);
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE27,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS3);
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE22,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS3);
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int rt1316_pde24_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component =
+		snd_soc_dapm_to_component(w->dapm);
+	struct rt1316_sdw_priv *rt1316 = snd_soc_component_get_drvdata(component);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE24,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS0);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		regmap_write(rt1316->regmap,
+			SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE24,
+				RT1316_SDCA_CTL_REQ_POWER_STATE, 0),
+				PS3);
+		break;
+	}
+	return 0;
+}
+
+static const char * const rt1316_rx_data_ch_select[] = {
+	"L,R",
+	"L,L",
+	"L,R",
+	"L,L+R",
+	"R,L",
+	"R,R",
+	"R,L+R",
+	"L+R,L",
+	"L+R,R",
+	"L+R,L+R",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1316_rx_data_ch_enum,
+	SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0), 0,
+	rt1316_rx_data_ch_select);
+
+static const char * const rt1316_xu24_bypass_ctl[] = {
+	"Not Bypass",
+	"Bypass",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1316_xu24_bypass_enum,
+	SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_XU24, RT1316_SDCA_CTL_BYPASS, 0), 0,
+	rt1316_xu24_bypass_ctl);
+
+static const char * const rt1316_lr_iv_sel[] = {
+	"0",
+	"1",
+	"2",
+	"3",
+	"4",
+	"5",
+	"6",
+	"7",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1316_l_v_tag_enum,
+	0x3004, 0, rt1316_lr_iv_sel);
+static SOC_ENUM_SINGLE_DECL(rt1316_l_i_tag_enum,
+	0x3004, 4, rt1316_lr_iv_sel);
+static SOC_ENUM_SINGLE_DECL(rt1316_r_v_tag_enum,
+	0x3005, 0, rt1316_lr_iv_sel);
+static SOC_ENUM_SINGLE_DECL(rt1316_r_i_tag_enum,
+	0x3005, 4, rt1316_lr_iv_sel);
+
+static const struct snd_kcontrol_new rt1316_snd_controls[] = {
+
+	/* I2S Data Channel Selection */
+	SOC_ENUM("RX Channel Select", rt1316_rx_data_ch_enum),
+
+	/* XU24 Bypass Control */
+	SOC_ENUM("XU24 Bypass Control", rt1316_xu24_bypass_enum),
+
+	/* Left/Right IV tag */
+	SOC_ENUM("Left V Tag Select", rt1316_l_v_tag_enum),
+	SOC_ENUM("Left I Tag Select", rt1316_l_i_tag_enum),
+	SOC_ENUM("Right V Tag Select", rt1316_r_v_tag_enum),
+	SOC_ENUM("Right I Tag Select", rt1316_r_i_tag_enum),
+
+	/* IV mixer Control */
+	SOC_DOUBLE("Isense Mixer Switch", 0xc605, 2, 0, 1, 1),
+	SOC_DOUBLE("Vsense Mixer Switch", 0xc605, 3, 1, 1, 1),
+};
+
+static const struct snd_kcontrol_new rt1316_sto_dac_l =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch",
+		SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_L),
+		0, 1, 1);
+
+static const struct snd_kcontrol_new rt1316_sto_dac_r =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch",
+		SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_R),
+		0, 1, 1);
+
+static const struct snd_soc_dapm_widget rt1316_dapm_widgets[] = {
+	/* Audio Interface */
+	SND_SOC_DAPM_AIF_IN("DP1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("DP2TX", "DP2 Capture", 0, SND_SOC_NOPM, 0, 0),
+
+	/* Digital Interface */
+	SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_SWITCH("DAC L", SND_SOC_NOPM, 0, 0, &rt1316_sto_dac_l),
+	SND_SOC_DAPM_SWITCH("DAC R", SND_SOC_NOPM, 0, 0, &rt1316_sto_dac_r),
+
+	/* Output Lines */
+	SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
+		rt1316_classd_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_OUTPUT("SPOL"),
+	SND_SOC_DAPM_OUTPUT("SPOR"),
+
+	SND_SOC_DAPM_SUPPLY("PDE 24", SND_SOC_NOPM, 0, 0,
+		rt1316_pde24_event,
+		SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+	SND_SOC_DAPM_PGA("I Sense", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("V Sense", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_SIGGEN("I Gen"),
+	SND_SOC_DAPM_SIGGEN("V Gen"),
+};
+
+static const struct snd_soc_dapm_route rt1316_dapm_routes[] = {
+	{ "DAC", NULL, "DP1RX" },
+	{ "DAC L", "Switch", "DAC" },
+	{ "DAC R", "Switch", "DAC" },
+	{ "CLASS D", NULL, "DAC L" },
+	{ "CLASS D", NULL, "DAC R" },
+	{ "SPOL", NULL, "CLASS D" },
+	{ "SPOR", NULL, "CLASS D" },
+
+	{ "I Sense", NULL, "I Gen" },
+	{ "V Sense", NULL, "V Gen" },
+	{ "I Sense", NULL, "PDE 24" },
+	{ "V Sense", NULL, "PDE 24" },
+	{ "DP2TX", NULL, "I Sense" },
+	{ "DP2TX", NULL, "V Sense" },
+};
+
+static int rt1316_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
+				int direction)
+{
+	struct sdw_stream_data *stream;
+
+	if (!sdw_stream)
+		return 0;
+
+	stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+	if (!stream)
+		return -ENOMEM;
+
+	stream->sdw_stream = sdw_stream;
+
+	/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
+	if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+		dai->playback_dma_data = stream;
+	else
+		dai->capture_dma_data = stream;
+
+	return 0;
+}
+
+static void rt1316_sdw_shutdown(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct sdw_stream_data *stream;
+
+	stream = snd_soc_dai_get_dma_data(dai, substream);
+	snd_soc_dai_set_dma_data(dai, substream, NULL);
+	kfree(stream);
+}
+
+static int rt1316_sdw_set_tdm_slot(struct snd_soc_dai *dai,
+				   unsigned int tx_mask,
+				   unsigned int rx_mask,
+				   int slots, int slot_width)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1316_sdw_priv *rt1316 =
+		snd_soc_component_get_drvdata(component);
+
+	if (tx_mask)
+		return -EINVAL;
+
+	if (slots > 2)
+		return -EINVAL;
+
+	rt1316->rx_mask = rx_mask;
+	rt1316->slots = slots;
+	/* slot_width is not used since it's irrelevant for SoundWire */
+
+	return 0;
+}
+
+static int rt1316_sdw_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1316_sdw_priv *rt1316 =
+		snd_soc_component_get_drvdata(component);
+	struct sdw_stream_config stream_config;
+	struct sdw_port_config port_config;
+	enum sdw_data_direction direction;
+	struct sdw_stream_data *stream;
+	int retval, port, num_channels, ch_mask;
+
+	dev_dbg(dai->dev, "%s %s", __func__, dai->name);
+	stream = snd_soc_dai_get_dma_data(dai, substream);
+
+	if (!stream)
+		return -EINVAL;
+
+	if (!rt1316->sdw_slave)
+		return -EINVAL;
+
+	/* SoundWire specific configuration */
+	/* port 1 for playback */
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		direction = SDW_DATA_DIR_RX;
+		port = 1;
+	} else {
+		direction = SDW_DATA_DIR_TX;
+		port = 2;
+	}
+
+	if (rt1316->slots) {
+		num_channels = rt1316->slots;
+		ch_mask = rt1316->rx_mask;
+	} else {
+		num_channels = params_channels(params);
+		ch_mask = (1 << num_channels) - 1;
+	}
+
+	stream_config.frame_rate = params_rate(params);
+	stream_config.ch_count = num_channels;
+	stream_config.bps = snd_pcm_format_width(params_format(params));
+	stream_config.direction = direction;
+
+	port_config.ch_mask = ch_mask;
+	port_config.num = port;
+
+	retval = sdw_stream_add_slave(rt1316->sdw_slave, &stream_config,
+				&port_config, 1, stream->sdw_stream);
+	if (retval) {
+		dev_err(dai->dev, "Unable to configure port\n");
+		return retval;
+	}
+
+	return 0;
+}
+
+static int rt1316_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1316_sdw_priv *rt1316 =
+		snd_soc_component_get_drvdata(component);
+	struct sdw_stream_data *stream =
+		snd_soc_dai_get_dma_data(dai, substream);
+
+	if (!rt1316->sdw_slave)
+		return -EINVAL;
+
+	sdw_stream_remove_slave(rt1316->sdw_slave, stream->sdw_stream);
+	return 0;
+}
+
+/*
+ * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
+ * port_prep are not defined for now
+ */
+static struct sdw_slave_ops rt1316_slave_ops = {
+	.read_prop = rt1316_read_prop,
+	.update_status = rt1316_update_status,
+};
+
+static const struct snd_soc_component_driver soc_component_sdw_rt1316 = {
+	.controls = rt1316_snd_controls,
+	.num_controls = ARRAY_SIZE(rt1316_snd_controls),
+	.dapm_widgets = rt1316_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt1316_dapm_widgets),
+	.dapm_routes = rt1316_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt1316_dapm_routes),
+};
+
+static const struct snd_soc_dai_ops rt1316_aif_dai_ops = {
+	.hw_params = rt1316_sdw_hw_params,
+	.hw_free	= rt1316_sdw_pcm_hw_free,
+	.set_sdw_stream	= rt1316_set_sdw_stream,
+	.shutdown	= rt1316_sdw_shutdown,
+	.set_tdm_slot	= rt1316_sdw_set_tdm_slot,
+};
+
+#define RT1316_STEREO_RATES SNDRV_PCM_RATE_48000
+#define RT1316_FORMATS (SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE | \
+			SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_driver rt1316_sdw_dai[] = {
+	{
+		.name = "rt1316-aif",
+		.playback = {
+			.stream_name = "DP1 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT1316_STEREO_RATES,
+			.formats = RT1316_FORMATS,
+		},
+		.capture = {
+			.stream_name = "DP2 Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT1316_STEREO_RATES,
+			.formats = RT1316_FORMATS,
+		},
+		.ops = &rt1316_aif_dai_ops,
+	},
+};
+
+static int rt1316_sdw_init(struct device *dev, struct regmap *regmap,
+				struct sdw_slave *slave)
+{
+	struct rt1316_sdw_priv *rt1316;
+	int ret;
+
+	rt1316 = devm_kzalloc(dev, sizeof(*rt1316), GFP_KERNEL);
+	if (!rt1316)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, rt1316);
+	rt1316->sdw_slave = slave;
+	rt1316->regmap = regmap;
+
+	/*
+	 * Mark hw_init to false
+	 * HW init will be performed when device reports present
+	 */
+	rt1316->hw_init = false;
+	rt1316->first_hw_init = false;
+
+	ret =  devm_snd_soc_register_component(dev,
+				&soc_component_sdw_rt1316,
+				rt1316_sdw_dai,
+				ARRAY_SIZE(rt1316_sdw_dai));
+
+	dev_dbg(&slave->dev, "%s\n", __func__);
+
+	return ret;
+}
+
+static int rt1316_sdw_probe(struct sdw_slave *slave,
+				const struct sdw_device_id *id)
+{
+	struct regmap *regmap;
+
+	/* Regmap Initialization */
+	regmap = devm_regmap_init_sdw(slave, &rt1316_sdw_regmap);
+	if (!regmap)
+		return -EINVAL;
+
+	return rt1316_sdw_init(&slave->dev, regmap, slave);
+}
+
+static const struct sdw_device_id rt1316_id[] = {
+	SDW_SLAVE_ENTRY_EXT(0x025d, 0x1316, 0x3, 0x1, 0),
+	{},
+};
+MODULE_DEVICE_TABLE(sdw, rt1316_id);
+
+static int __maybe_unused rt1316_dev_suspend(struct device *dev)
+{
+	struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
+
+	if (!rt1316->hw_init)
+		return 0;
+
+	regcache_cache_only(rt1316->regmap, true);
+
+	return 0;
+}
+
+#define RT1316_PROBE_TIMEOUT 2000
+
+static int __maybe_unused rt1316_dev_resume(struct device *dev)
+{
+	struct sdw_slave *slave = dev_to_sdw_dev(dev);
+	struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
+	unsigned long time;
+
+	if (!rt1316->hw_init)
+		return 0;
+
+	if (!slave->unattach_request)
+		goto regmap_sync;
+
+	time = wait_for_completion_timeout(&slave->initialization_complete,
+				msecs_to_jiffies(RT1316_PROBE_TIMEOUT));
+	if (!time) {
+		dev_err(&slave->dev, "Initialization not complete, timed out\n");
+		return -ETIMEDOUT;
+	}
+
+regmap_sync:
+	slave->unattach_request = 0;
+	regcache_cache_only(rt1316->regmap, false);
+	regcache_sync(rt1316->regmap);
+
+	return 0;
+}
+
+static const struct dev_pm_ops rt1316_pm = {
+	SET_SYSTEM_SLEEP_PM_OPS(rt1316_dev_suspend, rt1316_dev_resume)
+	SET_RUNTIME_PM_OPS(rt1316_dev_suspend, rt1316_dev_resume, NULL)
+};
+
+static struct sdw_driver rt1316_sdw_driver = {
+	.driver = {
+		.name = "rt1316-sdca",
+		.owner = THIS_MODULE,
+		.pm = &rt1316_pm,
+	},
+	.probe = rt1316_sdw_probe,
+	.ops = &rt1316_slave_ops,
+	.id_table = rt1316_id,
+};
+module_sdw_driver(rt1316_sdw_driver);
+
+MODULE_DESCRIPTION("ASoC RT1316 driver SDCA SDW");
+MODULE_AUTHOR("Shuming Fan <shumingf@...ltek.com>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/rt1316-sdw.h b/sound/soc/codecs/rt1316-sdw.h
new file mode 100644
index 000000000000..50e51bf2bf88
--- /dev/null
+++ b/sound/soc/codecs/rt1316-sdw.h
@@ -0,0 +1,115 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * rt1316-sdw.h -- RT1316 SDCA ALSA SoC audio driver header
+ *
+ * Copyright(c) 2020 Realtek Semiconductor Corp.
+ */
+
+#ifndef __RT1316_SDW_H__
+#define __RT1316_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>
+
+/* RT1316 SDCA function topology */
+#define FUN_SMART_AMP 0x04
+
+/* RT1316 SDCA entity */
+#define RT1316_SDCA_ENT_PDE23 0x31
+#define RT1316_SDCA_ENT_PDE27 0x32
+#define RT1316_SDCA_ENT_PDE22 0x33
+#define RT1316_SDCA_ENT_PDE24 0x34
+#define RT1316_SDCA_ENT_XU24 0x24
+#define RT1316_SDCA_ENT_FU21 0x03
+#define RT1316_SDCA_ENT_UDMPU21 0x02
+
+/* RT1316 SDCA control */
+#define RT1316_SDCA_CTL_SAMPLE_FREQ_INDEX 0x10
+#define RT1316_SDCA_CTL_REQ_POWER_STATE 0x01
+#define RT1316_SDCA_CTL_BYPASS 0x01
+#define RT1316_SDCA_CTL_FU_MUTE 0x01
+#define RT1316_SDCA_CTL_FU_VOLUME 0x02
+#define RT1316_SDCA_CTL_UDMPU_CLUSTER 0x10
+
+/* RT1316 SDCA channel */
+#define CH_L 0x01
+#define CH_R 0x02
+
+/* Power State */
+#define PS0 0x00
+#define PS3 0x03
+
+/* Mute Control */
+#define UNMUTE 0x00
+#define MUTE 0x01
+
+static const struct reg_default rt1316_reg_defaults[] = {
+	{ 0x3004, 0x00 },
+	{ 0x3005, 0x00 },
+	{ 0x3206, 0x00 },
+	{ 0xc001, 0x00 },
+	{ 0xc002, 0x00 },
+	{ 0xc003, 0x00 },
+	{ 0xc004, 0x00 },
+	{ 0xc005, 0x00 },
+	{ 0xc006, 0x00 },
+	{ 0xc007, 0x00 },
+	{ 0xc008, 0x00 },
+	{ 0xc009, 0x00 },
+	{ 0xc00a, 0x00 },
+	{ 0xc00b, 0x00 },
+	{ 0xc00c, 0x00 },
+	{ 0xc00d, 0x00 },
+	{ 0xc00e, 0x00 },
+	{ 0xc00f, 0x00 },
+	{ 0xc010, 0xa5 },
+	{ 0xc011, 0x00 },
+	{ 0xc012, 0xff },
+	{ 0xc013, 0xff },
+	{ 0xc014, 0x40 },
+	{ 0xc015, 0x00 },
+	{ 0xc016, 0x00 },
+	{ 0xc017, 0x00 },
+	{ 0xc605, 0x30 },
+	{ 0xc700, 0x0a },
+	{ 0xc701, 0xaa },
+	{ 0xc702, 0x1a },
+	{ 0xc703, 0x0a },
+	{ 0xc710, 0x80 },
+	{ 0xc711, 0x00 },
+	{ 0xc712, 0x3e },
+	{ 0xc713, 0x80 },
+	{ 0xc714, 0x80 },
+	{ 0xc715, 0x06 },
+	{ 0xd101, 0x00 },
+	{ 0xd102, 0x30 },
+	{ 0xd103, 0x00 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0), 0x00 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_L), 0x01 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_FU21, RT1316_SDCA_CTL_FU_MUTE, CH_R), 0x01 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_XU24, RT1316_SDCA_CTL_BYPASS, 0), 0x01 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE23, RT1316_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE22, RT1316_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
+	{ SDW_SDCA_CTL(FUN_SMART_AMP, RT1316_SDCA_ENT_PDE24, RT1316_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
+};
+
+struct rt1316_sdw_priv {
+	struct snd_soc_component *component;
+	struct regmap *regmap;
+	struct sdw_slave *sdw_slave;
+	enum sdw_slave_status status;
+	struct sdw_bus_params params;
+	bool hw_init;
+	bool first_hw_init;
+	int rx_mask;
+	int slots;
+};
+
+struct sdw_stream_data {
+	struct sdw_stream_runtime *sdw_stream;
+};
+
+#endif /* __RT1316_SDW_H__ */
-- 
2.17.1

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