ASoC: rt1016: Add the rt1016 support

The patch adds the rt1016 support.
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Link: https://lore.kernel.org/r/20200507021539.7133-1-oder_chiou@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt1016.c

+// SPDX-License-Identifier: GPL-2.0
+//
+// rt1016.c  --  RT1016 ALSA SoC audio amplifier driver
+//
+// Copyright 2020 Realtek Semiconductor Corp.
+// Author: Oder Chiou <oder_chiou@realtek.com>
+//
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/regmap.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/firmware.h>
+#include <linux/gpio.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "rl6231.h"
+#include "rt1016.h"
+
+static const struct reg_sequence rt1016_patch[] = {
+	{RT1016_VOL_CTRL_3,	0x8900},
+	{RT1016_ANA_CTRL_1,	0xa002},
+	{RT1016_ANA_CTRL_2,	0x0002},
+	{RT1016_CLOCK_4,	0x6700},
+	{RT1016_CLASSD_3,	0xdc55},
+	{RT1016_CLASSD_4,	0x376a},
+	{RT1016_CLASSD_5,	0x009f},
+};
+
+static const struct reg_default rt1016_reg[] = {
+	{0x00, 0x0000},
+	{0x01, 0x5400},
+	{0x02, 0x5506},
+	{0x03, 0xf800},
+	{0x04, 0x0000},
+	{0x05, 0xbfbf},
+	{0x06, 0x8900},
+	{0x07, 0xa002},
+	{0x08, 0x0000},
+	{0x09, 0x0000},
+	{0x0a, 0x0000},
+	{0x0c, 0x0000},
+	{0x0d, 0x0000},
+	{0x0e, 0x10ec},
+	{0x0f, 0x6595},
+	{0x11, 0x0002},
+	{0x1c, 0x0000},
+	{0x1d, 0x0000},
+	{0x1e, 0x0000},
+	{0x1f, 0xf000},
+	{0x20, 0x0000},
+	{0x21, 0x6000},
+	{0x22, 0x0000},
+	{0x23, 0x6700},
+	{0x24, 0x0000},
+	{0x25, 0x0000},
+	{0x26, 0x0000},
+	{0x40, 0x0018},
+	{0x60, 0x00a5},
+	{0x80, 0x0010},
+	{0x81, 0x0009},
+	{0x82, 0x0000},
+	{0x83, 0x0000},
+	{0xa0, 0x0700},
+	{0xc0, 0x0080},
+	{0xc1, 0x02a0},
+	{0xc2, 0x1400},
+	{0xc3, 0x0a4a},
+	{0xc4, 0x552a},
+	{0xc5, 0x087e},
+	{0xc6, 0x0020},
+	{0xc7, 0xa833},
+	{0xc8, 0x0433},
+	{0xc9, 0x8040},
+	{0xca, 0xdc55},
+	{0xcb, 0x376a},
+	{0xcc, 0x009f},
+	{0xcf, 0x0020},
+};
+
+static bool rt1016_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RT1016_ANA_FLAG:
+	case RT1016_VERSION2_ID:
+	case RT1016_VERSION1_ID:
+	case RT1016_VENDER_ID:
+	case RT1016_DEVICE_ID:
+	case RT1016_TEST_SIGNAL:
+	case RT1016_SC_CTRL_1:
+		return true;
+
+	default:
+		return false;
+	}
+}
+
+static bool rt1016_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RT1016_RESET:
+	case RT1016_PADS_CTRL_1:
+	case RT1016_PADS_CTRL_2:
+	case RT1016_I2C_CTRL:
+	case RT1016_VOL_CTRL_1:
+	case RT1016_VOL_CTRL_2:
+	case RT1016_VOL_CTRL_3:
+	case RT1016_ANA_CTRL_1:
+	case RT1016_MUX_SEL:
+	case RT1016_RX_I2S_CTRL:
+	case RT1016_ANA_FLAG:
+	case RT1016_VERSION2_ID:
+	case RT1016_VERSION1_ID:
+	case RT1016_VENDER_ID:
+	case RT1016_DEVICE_ID:
+	case RT1016_ANA_CTRL_2:
+	case RT1016_TEST_SIGNAL:
+	case RT1016_TEST_CTRL_1:
+	case RT1016_TEST_CTRL_2:
+	case RT1016_TEST_CTRL_3:
+	case RT1016_CLOCK_1:
+	case RT1016_CLOCK_2:
+	case RT1016_CLOCK_3:
+	case RT1016_CLOCK_4:
+	case RT1016_CLOCK_5:
+	case RT1016_CLOCK_6:
+	case RT1016_CLOCK_7:
+	case RT1016_I2S_CTRL:
+	case RT1016_DAC_CTRL_1:
+	case RT1016_SC_CTRL_1:
+	case RT1016_SC_CTRL_2:
+	case RT1016_SC_CTRL_3:
+	case RT1016_SC_CTRL_4:
+	case RT1016_SIL_DET:
+	case RT1016_SYS_CLK:
+	case RT1016_BIAS_CUR:
+	case RT1016_DAC_CTRL_2:
+	case RT1016_LDO_CTRL:
+	case RT1016_CLASSD_1:
+	case RT1016_PLL1:
+	case RT1016_PLL2:
+	case RT1016_PLL3:
+	case RT1016_CLASSD_2:
+	case RT1016_CLASSD_OUT:
+	case RT1016_CLASSD_3:
+	case RT1016_CLASSD_4:
+	case RT1016_CLASSD_5:
+	case RT1016_PWR_CTRL:
+		return true;
+
+	default:
+		return false;
+	}
+}
+
+static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, -9550, 50, 0);
+
+static const struct snd_kcontrol_new rt1016_snd_controls[] = {
+	SOC_DOUBLE_TLV("DAC Playback Volume", RT1016_VOL_CTRL_2,
+		RT1016_L_VOL_SFT, RT1016_R_VOL_SFT, 191, 0, dac_vol_tlv),
+	SOC_DOUBLE("DAC Playback Switch", RT1016_VOL_CTRL_1,
+		RT1016_DA_MUTE_L_SFT, RT1016_DA_MUTE_R_SFT, 1, 1),
+};
+
+static int rt1016_is_sys_clk_from_pll(struct snd_soc_dapm_widget *source,
+			 struct snd_soc_dapm_widget *sink)
+{
+	struct snd_soc_component *component =
+		snd_soc_dapm_to_component(source->dapm);
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+
+	if (rt1016->sysclk_src == RT1016_SCLK_S_PLL)
+		return 1;
+	else
+		return 0;
+}
+
+/* Interface data select */
+static const char * const rt1016_data_select[] = {
+	"L/R", "R/L", "L/L", "R/R"
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1016_if_data_swap_enum,
+	RT1016_I2S_CTRL, RT1016_I2S_DATA_SWAP_SFT, rt1016_data_select);
+
+static const struct snd_kcontrol_new rt1016_if_data_swap_mux =
+	SOC_DAPM_ENUM("Data Swap Mux", rt1016_if_data_swap_enum);
+
+static const struct snd_soc_dapm_widget rt1016_dapm_widgets[] = {
+	SND_SOC_DAPM_MUX("Data Swap Mux", SND_SOC_NOPM, 0, 0,
+			&rt1016_if_data_swap_mux),
+
+	SND_SOC_DAPM_SUPPLY("DAC Filter", RT1016_CLOCK_3,
+		RT1016_PWR_DAC_FILTER_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DAMOD", RT1016_CLOCK_3, RT1016_PWR_DACMOD_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY("FIFO", RT1016_CLOCK_3, RT1016_PWR_CLK_FIFO_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY("Pure DC", RT1016_CLOCK_3,
+		RT1016_PWR_CLK_PUREDC_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("CLK Silence Det", RT1016_CLOCK_3,
+		RT1016_PWR_SIL_DET_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("RC 25M", RT1016_CLOCK_3, RT1016_PWR_RC_25M_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL1", RT1016_CLOCK_3, RT1016_PWR_PLL1_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY("ANA CTRL", RT1016_CLOCK_3, RT1016_PWR_ANA_CTRL_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("CLK SYS", RT1016_CLOCK_3, RT1016_PWR_CLK_SYS_BIT,
+		0, NULL, 0),
+
+	SND_SOC_DAPM_SUPPLY("LRCK Det", RT1016_CLOCK_4, RT1016_PWR_LRCK_DET_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("BCLK Det", RT1016_CLOCK_4, RT1016_PWR_BCLK_DET_BIT,
+		0, NULL, 0),
+
+	SND_SOC_DAPM_SUPPLY("CKGEN DAC", RT1016_DAC_CTRL_2,
+		RT1016_CKGEN_DAC_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("VCM SLOW", RT1016_CLASSD_1, RT1016_VCM_SLOW_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY("Silence Det", RT1016_SIL_DET,
+		RT1016_SIL_DET_EN_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL2", RT1016_PLL2, RT1016_PLL2_EN_BIT, 0, NULL,
+		0),
+
+	SND_SOC_DAPM_SUPPLY_S("BG1 BG2", 1, RT1016_PWR_CTRL,
+		RT1016_PWR_BG_1_2_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("MBIAS BG", 1, RT1016_PWR_CTRL,
+		RT1016_PWR_MBIAS_BG_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("PLL", 1, RT1016_PWR_CTRL, RT1016_PWR_PLL_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("BASIC", 1, RT1016_PWR_CTRL, RT1016_PWR_BASIC_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("CLASS D", 1, RT1016_PWR_CTRL,
+		RT1016_PWR_CLSD_BIT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("25M", 1, RT1016_PWR_CTRL, RT1016_PWR_25M_BIT, 0,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACL", 1, RT1016_PWR_CTRL, RT1016_PWR_DACL_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACR", 1, RT1016_PWR_CTRL, RT1016_PWR_DACR_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("LDO2", 1, RT1016_PWR_CTRL, RT1016_PWR_LDO2_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("VREF", 1, RT1016_PWR_CTRL, RT1016_PWR_VREF_BIT,
+		0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("MBIAS", 1, RT1016_PWR_CTRL, RT1016_PWR_MBIAS_BIT,
+		0, NULL, 0),
+
+	SND_SOC_DAPM_AIF_IN("AIFRX", "AIF Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+
+	SND_SOC_DAPM_OUTPUT("SPO"),
+};
+
+static const struct snd_soc_dapm_route rt1016_dapm_routes[] = {
+	{ "Data Swap Mux", "L/R", "AIFRX" },
+	{ "Data Swap Mux", "R/L", "AIFRX" },
+	{ "Data Swap Mux", "L/L", "AIFRX" },
+	{ "Data Swap Mux", "R/R", "AIFRX" },
+
+	{ "DAC", NULL, "DAC Filter" },
+	{ "DAC", NULL, "DAMOD" },
+	{ "DAC", NULL, "FIFO" },
+	{ "DAC", NULL, "Pure DC" },
+	{ "DAC", NULL, "Silence Det" },
+	{ "DAC", NULL, "ANA CTRL" },
+	{ "DAC", NULL, "CLK SYS" },
+	{ "DAC", NULL, "LRCK Det" },
+	{ "DAC", NULL, "BCLK Det" },
+	{ "DAC", NULL, "CKGEN DAC" },
+	{ "DAC", NULL, "VCM SLOW" },
+
+	{ "PLL", NULL, "PLL1" },
+	{ "PLL", NULL, "PLL2" },
+	{ "25M", NULL, "RC 25M" },
+	{ "Silence Det", NULL, "CLK Silence Det" },
+
+	{ "DAC", NULL, "Data Swap Mux" },
+	{ "DAC", NULL, "BG1 BG2" },
+	{ "DAC", NULL, "MBIAS BG" },
+	{ "DAC", NULL, "PLL", rt1016_is_sys_clk_from_pll},
+	{ "DAC", NULL, "BASIC" },
+	{ "DAC", NULL, "CLASS D" },
+	{ "DAC", NULL, "25M" },
+	{ "DAC", NULL, "DACL" },
+	{ "DAC", NULL, "DACR" },
+	{ "DAC", NULL, "LDO2" },
+	{ "DAC", NULL, "VREF" },
+	{ "DAC", NULL, "MBIAS" },
+
+	{ "SPO", NULL, "DAC" },
+};
+
+static int rt1016_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 rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+	int pre_div, bclk_ms, frame_size;
+	unsigned int val_len = 0;
+
+	rt1016->lrck = params_rate(params);
+	pre_div = rl6231_get_clk_info(rt1016->sysclk, rt1016->lrck);
+	if (pre_div < 0) {
+		dev_err(component->dev, "Unsupported clock rate\n");
+		return -EINVAL;
+	}
+
+	frame_size = snd_soc_params_to_frame_size(params);
+	if (frame_size < 0) {
+		dev_err(component->dev, "Unsupported frame size: %d\n",
+			frame_size);
+		return -EINVAL;
+	}
+
+	bclk_ms = frame_size > 32;
+	rt1016->bclk = rt1016->lrck * (32 << bclk_ms);
+
+	if (bclk_ms && rt1016->master)
+		snd_soc_component_update_bits(component, RT1016_I2S_CTRL,
+			RT1016_I2S_BCLK_MS_MASK, RT1016_I2S_BCLK_MS_64);
+
+	dev_dbg(component->dev, "lrck is %dHz and pre_div is %d for iis %d\n",
+				rt1016->lrck, pre_div, dai->id);
+
+	switch (params_width(params)) {
+	case 16:
+		val_len = RT1016_I2S_DL_16;
+		break;
+	case 20:
+		val_len = RT1016_I2S_DL_20;
+		break;
+	case 24:
+		val_len = RT1016_I2S_DL_24;
+		break;
+	case 32:
+		val_len = RT1016_I2S_DL_32;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, RT1016_I2S_CTRL,
+		RT1016_I2S_DL_MASK, val_len);
+	snd_soc_component_update_bits(component, RT1016_CLOCK_2,
+		RT1016_FS_PD_MASK | RT1016_OSR_PD_MASK,
+		((pre_div + 3) << RT1016_FS_PD_SFT) |
+		(pre_div << RT1016_OSR_PD_SFT));
+
+	return 0;
+}
+
+static int rt1016_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+	unsigned int reg_val = 0;
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		reg_val |= RT1016_I2S_MS_M;
+		rt1016->master = 1;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		reg_val |= RT1016_I2S_MS_S;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		reg_val |= RT1016_I2S_BCLK_POL_INV;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		break;
+
+	case SND_SOC_DAIFMT_LEFT_J:
+		reg_val |= RT1016_I2S_DF_LEFT;
+		break;
+
+	case SND_SOC_DAIFMT_DSP_A:
+		reg_val |= RT1016_I2S_DF_PCM_A;
+		break;
+
+	case SND_SOC_DAIFMT_DSP_B:
+		reg_val |= RT1016_I2S_DF_PCM_B;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, RT1016_I2S_CTRL,
+			RT1016_I2S_MS_MASK | RT1016_I2S_BCLK_POL_MASK |
+			RT1016_I2S_DF_MASK, reg_val);
+
+	return 0;
+}
+
+static int rt1016_set_component_sysclk(struct snd_soc_component *component,
+		int clk_id, int source, unsigned int freq, int dir)
+{
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+	unsigned int reg_val = 0;
+
+	if (freq == rt1016->sysclk && clk_id == rt1016->sysclk_src)
+		return 0;
+
+	switch (clk_id) {
+	case RT1016_SCLK_S_MCLK:
+		reg_val |= RT1016_CLK_SYS_SEL_MCLK;
+		break;
+
+	case RT1016_SCLK_S_PLL:
+		reg_val |= RT1016_CLK_SYS_SEL_PLL;
+		break;
+
+	default:
+		dev_err(component->dev, "Invalid clock id (%d)\n", clk_id);
+		return -EINVAL;
+	}
+
+	rt1016->sysclk = freq;
+	rt1016->sysclk_src = clk_id;
+
+	dev_dbg(component->dev, "Sysclk is %dHz and clock id is %d\n",
+		freq, clk_id);
+
+	snd_soc_component_update_bits(component, RT1016_CLOCK_1,
+			RT1016_CLK_SYS_SEL_MASK, reg_val);
+
+	return 0;
+}
+
+static int rt1016_set_component_pll(struct snd_soc_component *component,
+		int pll_id, int source, unsigned int freq_in,
+		unsigned int freq_out)
+{
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+	struct rl6231_pll_code pll_code;
+	int ret;
+
+	if (!freq_in || !freq_out) {
+		dev_dbg(component->dev, "PLL disabled\n");
+
+		rt1016->pll_in = 0;
+		rt1016->pll_out = 0;
+
+		return 0;
+	}
+
+	if (source == rt1016->pll_src && freq_in == rt1016->pll_in &&
+		freq_out == rt1016->pll_out)
+		return 0;
+
+	switch (source) {
+	case RT1016_PLL_S_MCLK:
+		snd_soc_component_update_bits(component, RT1016_CLOCK_1,
+			RT1016_PLL_SEL_MASK, RT1016_PLL_SEL_MCLK);
+		break;
+
+	case RT1016_PLL_S_BCLK:
+		snd_soc_component_update_bits(component, RT1016_CLOCK_1,
+			RT1016_PLL_SEL_MASK, RT1016_PLL_SEL_BCLK);
+		break;
+
+	default:
+		dev_err(component->dev, "Unknown PLL Source %d\n", source);
+		return -EINVAL;
+	}
+
+	ret = rl6231_pll_calc(freq_in, freq_out * 4, &pll_code);
+	if (ret < 0) {
+		dev_err(component->dev, "Unsupport input clock %d\n", freq_in);
+		return ret;
+	}
+
+	dev_dbg(component->dev, "mbypass=%d m=%d n=%d kbypass=%d k=%d\n",
+		pll_code.m_bp, (pll_code.m_bp ? 0 : pll_code.m_code),
+		pll_code.n_code, pll_code.k_bp,
+		(pll_code.k_bp ? 0 : pll_code.k_code));
+
+	snd_soc_component_write(component, RT1016_PLL1,
+		(pll_code.m_bp ? 0 : pll_code.m_code) << RT1016_PLL_M_SFT |
+		pll_code.m_bp << RT1016_PLL_M_BP_SFT | pll_code.n_code);
+	snd_soc_component_write(component, RT1016_PLL2,
+		pll_code.k_bp << RT1016_PLL_K_BP_SFT |
+		(pll_code.k_bp ? 0 : pll_code.k_code));
+
+	rt1016->pll_in = freq_in;
+	rt1016->pll_out = freq_out;
+	rt1016->pll_src = source;
+
+	return 0;
+}
+
+static int rt1016_probe(struct snd_soc_component *component)
+{
+	struct rt1016_priv *rt1016 =
+		snd_soc_component_get_drvdata(component);
+
+	rt1016->component = component;
+
+	return 0;
+}
+
+static void rt1016_remove(struct snd_soc_component *component)
+{
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+
+	regmap_write(rt1016->regmap, RT1016_RESET, 0);
+}
+
+#define RT1016_STEREO_RATES SNDRV_PCM_RATE_8000_48000
+#define RT1016_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
+
+static struct snd_soc_dai_ops rt1016_aif_dai_ops = {
+	.hw_params = rt1016_hw_params,
+	.set_fmt = rt1016_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver rt1016_dai[] = {
+	{
+		.name = "rt1016-aif",
+		.id = 0,
+		.playback = {
+			.stream_name = "AIF Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT1016_STEREO_RATES,
+			.formats = RT1016_FORMATS,
+		},
+		.ops = &rt1016_aif_dai_ops,
+	}
+};
+
+#ifdef CONFIG_PM
+static int rt1016_suspend(struct snd_soc_component *component)
+{
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+
+	regcache_cache_only(rt1016->regmap, true);
+	regcache_mark_dirty(rt1016->regmap);
+
+	return 0;
+}
+
+static int rt1016_resume(struct snd_soc_component *component)
+{
+	struct rt1016_priv *rt1016 = snd_soc_component_get_drvdata(component);
+
+	regcache_cache_only(rt1016->regmap, false);
+	regcache_sync(rt1016->regmap);
+
+	return 0;
+}
+#else
+#define rt1016_suspend NULL
+#define rt1016_resume NULL
+#endif
+
+static const struct snd_soc_component_driver soc_component_dev_rt1016 = {
+	.probe = rt1016_probe,
+	.remove = rt1016_remove,
+	.suspend = rt1016_suspend,
+	.resume = rt1016_resume,
+	.controls = rt1016_snd_controls,
+	.num_controls = ARRAY_SIZE(rt1016_snd_controls),
+	.dapm_widgets = rt1016_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt1016_dapm_widgets),
+	.dapm_routes = rt1016_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt1016_dapm_routes),
+	.set_sysclk = rt1016_set_component_sysclk,
+	.set_pll = rt1016_set_component_pll,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static const struct regmap_config rt1016_regmap = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = RT1016_PWR_CTRL,
+	.volatile_reg = rt1016_volatile_register,
+	.readable_reg = rt1016_readable_register,
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = rt1016_reg,
+	.num_reg_defaults = ARRAY_SIZE(rt1016_reg),
+};
+
+static const struct i2c_device_id rt1016_i2c_id[] = {
+	{ "rt1016", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, rt1016_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id rt1016_of_match[] = {
+	{ .compatible = "realtek,rt1016", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, rt1016_of_match);
+#endif
+
+#ifdef CONFIG_ACPI
+static struct acpi_device_id rt1016_acpi_match[] = {
+	{"10EC1016", 0,},
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, rt1016_acpi_match);
+#endif
+
+static int rt1016_i2c_probe(struct i2c_client *i2c,
+	const struct i2c_device_id *id)
+{
+	struct rt1016_priv *rt1016;
+	int ret;
+	unsigned int val;
+
+	rt1016 = devm_kzalloc(&i2c->dev, sizeof(struct rt1016_priv),
+				GFP_KERNEL);
+	if (rt1016 == NULL)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, rt1016);
+
+	rt1016->regmap = devm_regmap_init_i2c(i2c, &rt1016_regmap);
+	if (IS_ERR(rt1016->regmap)) {
+		ret = PTR_ERR(rt1016->regmap);
+		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	regmap_read(rt1016->regmap, RT1016_DEVICE_ID, &val);
+	if (val != RT1016_DEVICE_ID_VAL) {
+		dev_err(&i2c->dev,
+			"Device with ID register %x is not rt1016\n", val);
+		return -ENODEV;
+	}
+
+	regmap_write(rt1016->regmap, RT1016_RESET, 0);
+
+	ret = regmap_register_patch(rt1016->regmap, rt1016_patch,
+				    ARRAY_SIZE(rt1016_patch));
+	if (ret != 0)
+		dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);
+
+	return devm_snd_soc_register_component(&i2c->dev,
+		&soc_component_dev_rt1016,
+		rt1016_dai, ARRAY_SIZE(rt1016_dai));
+}
+
+static void rt1016_i2c_shutdown(struct i2c_client *client)
+{
+	struct rt1016_priv *rt1016 = i2c_get_clientdata(client);
+
+	regmap_write(rt1016->regmap, RT1016_RESET, 0);
+}
+
+static struct i2c_driver rt1016_i2c_driver = {
+	.driver = {
+		.name = "rt1016",
+		.of_match_table = of_match_ptr(rt1016_of_match),
+		.acpi_match_table = ACPI_PTR(rt1016_acpi_match),
+	},
+	.probe = rt1016_i2c_probe,
+	.shutdown = rt1016_i2c_shutdown,
+	.id_table = rt1016_i2c_id,
+};
+module_i2c_driver(rt1016_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC RT1016 driver");
+MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>");
+MODULE_LICENSE("GPL v2");

sound/soc/codecs/rt1016.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * rt1016.h  --  RT1016 ALSA SoC audio amplifier driver
+ *
+ * Copyright 2020 Realtek Semiconductor Corp.
+ * Author: Oder Chiou <oder_chiou@realtek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __RT1016_H__
+#define __RT1016_H__
+
+#define RT1016_DEVICE_ID_VAL	0x6595
+
+#define RT1016_RESET		0x00
+#define RT1016_PADS_CTRL_1	0x01
+#define RT1016_PADS_CTRL_2	0x02
+#define RT1016_I2C_CTRL		0x03
+#define RT1016_VOL_CTRL_1	0x04
+#define RT1016_VOL_CTRL_2	0x05
+#define RT1016_VOL_CTRL_3	0x06
+#define RT1016_ANA_CTRL_1	0x07
+#define RT1016_MUX_SEL		0x08
+#define RT1016_RX_I2S_CTRL	0x09
+#define RT1016_ANA_FLAG		0x0a
+#define RT1016_VERSION2_ID	0x0c
+#define RT1016_VERSION1_ID	0x0d
+#define RT1016_VENDER_ID	0x0e
+#define RT1016_DEVICE_ID	0x0f
+#define RT1016_ANA_CTRL_2	0x11
+#define RT1016_TEST_SIGNAL	0x1c
+#define RT1016_TEST_CTRL_1	0x1d
+#define RT1016_TEST_CTRL_2	0x1e
+#define RT1016_TEST_CTRL_3	0x1f
+#define RT1016_CLOCK_1		0x20
+#define RT1016_CLOCK_2		0x21
+#define RT1016_CLOCK_3		0x22
+#define RT1016_CLOCK_4		0x23
+#define RT1016_CLOCK_5		0x24
+#define RT1016_CLOCK_6		0x25
+#define RT1016_CLOCK_7		0x26
+#define RT1016_I2S_CTRL		0x40
+#define RT1016_DAC_CTRL_1	0x60
+#define RT1016_SC_CTRL_1	0x80
+#define RT1016_SC_CTRL_2	0x81
+#define RT1016_SC_CTRL_3	0x82
+#define RT1016_SC_CTRL_4	0x83
+#define RT1016_SIL_DET		0xa0
+#define RT1016_SYS_CLK		0xc0
+#define RT1016_BIAS_CUR		0xc1
+#define RT1016_DAC_CTRL_2	0xc2
+#define RT1016_LDO_CTRL		0xc3
+#define RT1016_CLASSD_1		0xc4
+#define RT1016_PLL1		0xc5
+#define RT1016_PLL2		0xc6
+#define RT1016_PLL3		0xc7
+#define RT1016_CLASSD_2		0xc8
+#define RT1016_CLASSD_OUT	0xc9
+#define RT1016_CLASSD_3		0xca
+#define RT1016_CLASSD_4		0xcb
+#define RT1016_CLASSD_5		0xcc
+#define RT1016_PWR_CTRL		0xcf
+
+/* global definition */
+#define RT1016_L_VOL_MASK			(0xff << 8)
+#define RT1016_L_VOL_SFT			8
+#define RT1016_R_VOL_MASK			(0xff)
+#define RT1016_R_VOL_SFT			0
+
+/* 0x04 */
+#define RT1016_DA_MUTE_L_SFT			7
+#define RT1016_DA_MUTE_R_SFT			6
+
+/* 0x20 */
+#define RT1016_CLK_SYS_SEL_MASK			(0x1 << 15)
+#define RT1016_CLK_SYS_SEL_SFT			15
+#define RT1016_CLK_SYS_SEL_MCLK			(0x0 << 15)
+#define RT1016_CLK_SYS_SEL_PLL			(0x1 << 15)
+#define RT1016_PLL_SEL_MASK			(0x1 << 13)
+#define RT1016_PLL_SEL_SFT			13
+#define RT1016_PLL_SEL_MCLK			(0x0 << 13)
+#define RT1016_PLL_SEL_BCLK			(0x1 << 13)
+
+/* 0x21 */
+#define RT1016_FS_PD_MASK			(0x7 << 13)
+#define RT1016_FS_PD_SFT			13
+#define RT1016_OSR_PD_MASK			(0x3 << 10)
+#define RT1016_OSR_PD_SFT			10
+
+/* 0x22 */
+#define RT1016_PWR_DAC_FILTER			(0x1 << 11)
+#define RT1016_PWR_DAC_FILTER_BIT		11
+#define RT1016_PWR_DACMOD			(0x1 << 10)
+#define RT1016_PWR_DACMOD_BIT			10
+#define RT1016_PWR_CLK_FIFO			(0x1 << 9)
+#define RT1016_PWR_CLK_FIFO_BIT			9
+#define RT1016_PWR_CLK_PUREDC			(0x1 << 8)
+#define RT1016_PWR_CLK_PUREDC_BIT		8
+#define RT1016_PWR_SIL_DET			(0x1 << 7)
+#define RT1016_PWR_SIL_DET_BIT			7
+#define RT1016_PWR_RC_25M			(0x1 << 6)
+#define RT1016_PWR_RC_25M_BIT			6
+#define RT1016_PWR_PLL1				(0x1 << 5)
+#define RT1016_PWR_PLL1_BIT			5
+#define RT1016_PWR_ANA_CTRL			(0x1 << 4)
+#define RT1016_PWR_ANA_CTRL_BIT			4
+#define RT1016_PWR_CLK_SYS			(0x1 << 3)
+#define RT1016_PWR_CLK_SYS_BIT			3
+
+/* 0x23 */
+#define RT1016_PWR_LRCK_DET			(0x1 << 15)
+#define RT1016_PWR_LRCK_DET_BIT			15
+#define RT1016_PWR_BCLK_DET			(0x1 << 11)
+#define RT1016_PWR_BCLK_DET_BIT			11
+
+/* 0x40 */
+#define RT1016_I2S_BCLK_MS_MASK			(0x1 << 15)
+#define RT1016_I2S_BCLK_MS_SFT			15
+#define RT1016_I2S_BCLK_MS_32			(0x0 << 15)
+#define RT1016_I2S_BCLK_MS_64			(0x1 << 15)
+#define RT1016_I2S_BCLK_POL_MASK		(0x1 << 13)
+#define RT1016_I2S_BCLK_POL_SFT			13
+#define RT1016_I2S_BCLK_POL_NOR			(0x0 << 13)
+#define RT1016_I2S_BCLK_POL_INV			(0x1 << 13)
+#define RT1016_I2S_DATA_SWAP_MASK		(0x1 << 10)
+#define RT1016_I2S_DATA_SWAP_SFT		10
+#define RT1016_I2S_DL_MASK			(0x7 << 4)
+#define RT1016_I2S_DL_SFT			4
+#define RT1016_I2S_DL_16			(0x1 << 4)
+#define RT1016_I2S_DL_20			(0x2 << 4)
+#define RT1016_I2S_DL_24			(0x3 << 4)
+#define RT1016_I2S_DL_32			(0x4 << 4)
+#define RT1016_I2S_MS_MASK			(0x1 << 3)
+#define RT1016_I2S_MS_SFT			3
+#define RT1016_I2S_MS_M				(0x0 << 3)
+#define RT1016_I2S_MS_S				(0x1 << 3)
+#define RT1016_I2S_DF_MASK			(0x7 << 0)
+#define RT1016_I2S_DF_SFT			0
+#define RT1016_I2S_DF_I2S			(0x0)
+#define RT1016_I2S_DF_LEFT			(0x1)
+#define RT1016_I2S_DF_PCM_A			(0x2)
+#define RT1016_I2S_DF_PCM_B			(0x3)
+
+/* 0xa0 */
+#define RT1016_SIL_DET_EN			(0x1 << 15)
+#define RT1016_SIL_DET_EN_BIT			15
+
+/* 0xc2 */
+#define RT1016_CKGEN_DAC			(0x1 << 13)
+#define RT1016_CKGEN_DAC_BIT			13
+
+/* 0xc4 */
+#define RT1016_VCM_SLOW				(0x1 << 6)
+#define RT1016_VCM_SLOW_BIT			6
+
+/* 0xc5 */
+#define RT1016_PLL_M_MAX			0xf
+#define RT1016_PLL_M_MASK			(RT1016_PLL_M_MAX << 12)
+#define RT1016_PLL_M_SFT			12
+#define RT1016_PLL_M_BP				(0x1 << 11)
+#define RT1016_PLL_M_BP_SFT			11
+#define RT1016_PLL_N_MAX			0x1ff
+#define RT1016_PLL_N_MASK			(RT1016_PLL_N_MAX << 0)
+#define RT1016_PLL_N_SFT			0
+
+/* 0xc6 */
+#define RT1016_PLL2_EN				(0x1 << 15)
+#define RT1016_PLL2_EN_BIT			15
+#define RT1016_PLL_K_BP				(0x1 << 5)
+#define RT1016_PLL_K_BP_SFT			5
+#define RT1016_PLL_K_MAX			0x1f
+#define RT1016_PLL_K_MASK			(RT1016_PLL_K_MAX)
+#define RT1016_PLL_K_SFT			0
+
+/* 0xcf */
+#define RT1016_PWR_BG_1_2			(0x1 << 12)
+#define RT1016_PWR_BG_1_2_BIT			12
+#define RT1016_PWR_MBIAS_BG			(0x1 << 11)
+#define RT1016_PWR_MBIAS_BG_BIT			11
+#define RT1016_PWR_PLL				(0x1 << 9)
+#define RT1016_PWR_PLL_BIT			9
+#define RT1016_PWR_BASIC			(0x1 << 8)
+#define RT1016_PWR_BASIC_BIT			8
+#define RT1016_PWR_CLSD				(0x1 << 7)
+#define RT1016_PWR_CLSD_BIT			7
+#define RT1016_PWR_25M				(0x1 << 6)
+#define RT1016_PWR_25M_BIT			6
+#define RT1016_PWR_DACL				(0x1 << 4)
+#define RT1016_PWR_DACL_BIT			4
+#define RT1016_PWR_DACR				(0x1 << 3)
+#define RT1016_PWR_DACR_BIT			3
+#define RT1016_PWR_LDO2				(0x1 << 2)
+#define RT1016_PWR_LDO2_BIT			2
+#define RT1016_PWR_VREF				(0x1 << 1)
+#define RT1016_PWR_VREF_BIT			1
+#define RT1016_PWR_MBIAS			(0x1 << 0)
+#define RT1016_PWR_MBIAS_BIT			0
+
+/* System Clock Source */
+enum {
+	RT1016_SCLK_S_MCLK,
+	RT1016_SCLK_S_PLL,
+};
+
+/* PLL1 Source */
+enum {
+	RT1016_PLL_S_MCLK,
+	RT1016_PLL_S_BCLK,
+};
+
+enum {
+	RT1016_AIF1,
+	RT1016_AIFS,
+};
+
+struct rt1016_priv {
+	struct snd_soc_component *component;
+	struct regmap *regmap;
+	int sysclk;
+	int sysclk_src;
+	int lrck;
+	int bclk;
+	int master;
+	int pll_src;
+	int pll_in;
+	int pll_out;
+};
+
+#endif /* __RT1016_H__ */