Unverified Commit 33901f5b authored by Jerome Brunet's avatar Jerome Brunet Committed by Mark Brown
Browse files

ASoC: meson: add t9015 internal DAC driver 



Add the codec driver of the internal DAC found on Amlogic gxl, g12a and
sm1 family.

Signed-off-by: default avatarJerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20200219173503.1112561-3-jbrunet@baylibre.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 5c36abcd

sound/soc/meson/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ config SND_MESON_AIU 
	tristate "Amlogic AIU"

	select SND_MESON_CODEC_GLUE

	select SND_PCM_IEC958

	imply SND_SOC_MESON_T9015

	imply SND_SOC_HDMI_CODEC if DRM_MESON_DW_HDMI

	help

	  Select Y or M to add support for the Audio output subsystem found
@@ -116,4 +117,11 @@ config SND_MESON_G12A_TOHDMITX 
	help

	  Select Y or M to add support for HDMI audio on the g12a SoC

	  family



config SND_SOC_MESON_T9015

	tristate "Amlogic T9015 DAC"

	select REGMAP_MMIO

	help

	  Say Y or M if you want to add support for the internal DAC found

	  on GXL, G12 and SM1 SoC family.

endmenu

sound/soc/meson/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ snd-soc-meson-card-utils-objs := meson-card-utils.o 
snd-soc-meson-codec-glue-objs := meson-codec-glue.o

snd-soc-meson-gx-sound-card-objs := gx-card.o

snd-soc-meson-g12a-tohdmitx-objs := g12a-tohdmitx.o

snd-soc-meson-t9015-objs := t9015.o



obj-$(CONFIG_SND_MESON_AIU) += snd-soc-meson-aiu.o

obj-$(CONFIG_SND_MESON_AXG_FIFO) += snd-soc-meson-axg-fifo.o
@@ -40,3 +41,4 @@ obj-$(CONFIG_SND_MESON_CARD_UTILS) += snd-soc-meson-card-utils.o 
obj-$(CONFIG_SND_MESON_CODEC_GLUE) += snd-soc-meson-codec-glue.o

obj-$(CONFIG_SND_MESON_GX_SOUND_CARD) += snd-soc-meson-gx-sound-card.o

obj-$(CONFIG_SND_MESON_G12A_TOHDMITX) += snd-soc-meson-g12a-tohdmitx.o

obj-$(CONFIG_SND_SOC_MESON_T9015) += snd-soc-meson-t9015.o

sound/soc/meson/t9015.c

0 → 100644
+333 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

//

// Copyright (c) 2020 BayLibre, SAS.

// Author: Jerome Brunet <jbrunet@baylibre.com>



#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/module.h>

#include <linux/regmap.h>

#include <linux/regulator/consumer.h>

#include <linux/reset.h>

#include <sound/soc.h>

#include <sound/tlv.h>



#define BLOCK_EN	0x00

#define  LORN_EN	0

#define  LORP_EN	1

#define  LOLN_EN	2

#define  LOLP_EN	3

#define  DACR_EN	4

#define  DACL_EN	5

#define  DACR_INV	20

#define  DACL_INV	21

#define  DACR_SRC	22

#define  DACL_SRC	23

#define  REFP_BUF_EN	BIT(12)

#define  BIAS_CURRENT_EN BIT(13)

#define  VMID_GEN_FAST	BIT(14)

#define  VMID_GEN_EN	BIT(15)

#define  I2S_MODE	BIT(30)

#define VOL_CTRL0	0x04

#define  GAIN_H		31

#define  GAIN_L		23

#define VOL_CTRL1	0x08

#define  DAC_MONO	8

#define  RAMP_RATE	10

#define  VC_RAMP_MODE	12

#define  MUTE_MODE	13

#define  UNMUTE_MODE	14

#define  DAC_SOFT_MUTE	15

#define  DACR_VC	16

#define  DACL_VC	24

#define LINEOUT_CFG	0x0c

#define  LORN_POL	0

#define  LORP_POL	4

#define  LOLN_POL	8

#define  LOLP_POL	12

#define POWER_CFG	0x10



struct t9015 {

	struct clk *pclk;

	struct regulator *avdd;

};



static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)

{

	struct snd_soc_component *component = dai->component;

	unsigned int val;



	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {

	case SND_SOC_DAIFMT_CBM_CFM:

		val = I2S_MODE;

		break;



	case SND_SOC_DAIFMT_CBS_CFS:

		val = 0;

		break;



	default:

		return -EINVAL;

	}



	snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val);



	if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) &&

	    ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J))

		return -EINVAL;



	return 0;

}



static const struct snd_soc_dai_ops t9015_dai_ops = {

	.set_fmt = t9015_dai_set_fmt,

};



static struct snd_soc_dai_driver t9015_dai = {

	.name = "t9015-hifi",

	.playback = {

		.stream_name = "Playback",

		.channels_min = 1,

		.channels_max = 2,

		.rates = SNDRV_PCM_RATE_8000_96000,

		.formats = (SNDRV_PCM_FMTBIT_S8 |

			    SNDRV_PCM_FMTBIT_S16_LE |

			    SNDRV_PCM_FMTBIT_S20_LE |

			    SNDRV_PCM_FMTBIT_S24_LE),

	},

	.ops = &t9015_dai_ops,

};



static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0);



static const char * const ramp_rate_txt[] = { "Fast", "Slow" };

static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE,

			    ramp_rate_txt);



static const char * const dacr_in_txt[] = { "Right", "Left" };

static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt);



static const char * const dacl_in_txt[] = { "Left", "Right" };

static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt);



static const char * const mono_txt[] = { "Stereo", "Mono"};

static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt);



static const struct snd_kcontrol_new t9015_snd_controls[] = {

	/* Volume Controls */

	SOC_ENUM("Playback Channel Mode", mono_enum),

	SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1),

	SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC,

		       0xff, 0, dac_vol_tlv),



	/* Ramp Controls */

	SOC_ENUM("Ramp Rate", ramp_rate_enum),

	SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0),

	SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0),

	SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0),

};



static const struct snd_kcontrol_new t9015_right_dac_mux =

	SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum);

static const struct snd_kcontrol_new t9015_left_dac_mux =

	SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum);



static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = {

	SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0,

			 &t9015_right_dac_mux),

	SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0,

			 &t9015_left_dac_mux),

	SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0),

	SND_SOC_DAPM_DAC("Left DAC",  NULL, BLOCK_EN, DACL_EN, 0),

	SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0,

			 NULL, 0),

	SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0,

			 NULL, 0),

	SND_SOC_DAPM_OUT_DRV("Left- Driver",  BLOCK_EN, LOLN_EN, 0,

			 NULL, 0),

	SND_SOC_DAPM_OUT_DRV("Left+ Driver",  BLOCK_EN, LOLP_EN, 0,

			 NULL, 0),

	SND_SOC_DAPM_OUTPUT("LORN"),

	SND_SOC_DAPM_OUTPUT("LORP"),

	SND_SOC_DAPM_OUTPUT("LOLN"),

	SND_SOC_DAPM_OUTPUT("LOLP"),

};



static const struct snd_soc_dapm_route t9015_dapm_routes[] = {

	{ "Right IN", NULL, "Playback" },

	{ "Left IN",  NULL, "Playback" },

	{ "Right DAC Sel", "Right", "Right IN" },

	{ "Right DAC Sel", "Left",  "Left IN" },

	{ "Left DAC Sel",  "Right", "Right IN" },

	{ "Left DAC Sel",  "Left",  "Left IN" },

	{ "Right DAC", NULL, "Right DAC Sel" },

	{ "Left DAC",  NULL, "Left DAC Sel" },

	{ "Right- Driver", NULL, "Right DAC" },

	{ "Right+ Driver", NULL, "Right DAC" },

	{ "Left- Driver",  NULL, "Left DAC"  },

	{ "Left+ Driver",  NULL, "Left DAC"  },

	{ "LORN", NULL, "Right- Driver", },

	{ "LORP", NULL, "Right+ Driver", },

	{ "LOLN", NULL, "Left- Driver",  },

	{ "LOLP", NULL, "Left+ Driver",  },

};



static int t9015_set_bias_level(struct snd_soc_component *component,

				enum snd_soc_bias_level level)

{

	struct t9015 *priv = snd_soc_component_get_drvdata(component);

	enum snd_soc_bias_level now =

		snd_soc_component_get_bias_level(component);

	int ret;



	switch (level) {

	case SND_SOC_BIAS_ON:

		snd_soc_component_update_bits(component, BLOCK_EN,

					      BIAS_CURRENT_EN,

					      BIAS_CURRENT_EN);

		break;

	case SND_SOC_BIAS_PREPARE:

		snd_soc_component_update_bits(component, BLOCK_EN,

					      BIAS_CURRENT_EN,

					      0);

		break;

	case SND_SOC_BIAS_STANDBY:

		ret = regulator_enable(priv->avdd);

		if (ret) {

			dev_err(component->dev, "AVDD enable failed\n");

			return ret;

		}



		if (now == SND_SOC_BIAS_OFF) {

			snd_soc_component_update_bits(component, BLOCK_EN,

				VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,

				VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN);



			mdelay(200);

			snd_soc_component_update_bits(component, BLOCK_EN,

						      VMID_GEN_FAST,

						      0);

		}



		break;

	case SND_SOC_BIAS_OFF:

		snd_soc_component_update_bits(component, BLOCK_EN,

			VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN,

			0);



		regulator_disable(priv->avdd);

		break;

	}



	return 0;

}



static const struct snd_soc_component_driver t9015_codec_driver = {

	.set_bias_level		= t9015_set_bias_level,

	.controls		= t9015_snd_controls,

	.num_controls		= ARRAY_SIZE(t9015_snd_controls),

	.dapm_widgets		= t9015_dapm_widgets,

	.num_dapm_widgets	= ARRAY_SIZE(t9015_dapm_widgets),

	.dapm_routes		= t9015_dapm_routes,

	.num_dapm_routes	= ARRAY_SIZE(t9015_dapm_routes),

	.suspend_bias_off	= 1,

	.endianness		= 1,

	.non_legacy_dai_naming	= 1,

};



static const struct regmap_config t9015_regmap_config = {

	.reg_bits		= 32,

	.reg_stride		= 4,

	.val_bits		= 32,

	.max_register		= POWER_CFG,

};



static int t9015_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	struct t9015 *priv;

	void __iomem *regs;

	struct regmap *regmap;

	int ret;



	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;

	platform_set_drvdata(pdev, priv);



	priv->pclk = devm_clk_get(dev, "pclk");

	if (IS_ERR(priv->pclk)) {

		if (PTR_ERR(priv->pclk) != -EPROBE_DEFER)

			dev_err(dev, "failed to get core clock\n");

		return PTR_ERR(priv->pclk);

	}



	priv->avdd = devm_regulator_get(dev, "AVDD");

	if (IS_ERR(priv->avdd)) {

		if (PTR_ERR(priv->avdd) != -EPROBE_DEFER)

			dev_err(dev, "failed to AVDD\n");

		return PTR_ERR(priv->avdd);

	}



	ret = clk_prepare_enable(priv->pclk);

	if (ret) {

		dev_err(dev, "core clock enable failed\n");

		return ret;

	}



	ret = devm_add_action_or_reset(dev,

			(void(*)(void *))clk_disable_unprepare,

			priv->pclk);

	if (ret)

		return ret;



	ret = device_reset(dev);

	if (ret) {

		dev_err(dev, "reset failed\n");

		return ret;

	}



	regs = devm_platform_ioremap_resource(pdev, 0);

	if (IS_ERR(regs)) {

		dev_err(dev, "register map failed\n");

		return PTR_ERR(regs);

	}



	regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config);

	if (IS_ERR(regmap)) {

		dev_err(dev, "regmap init failed\n");

		return PTR_ERR(regmap);

	}



	/*

	 * Initialize output polarity:

	 * ATM the output polarity is fixed but in the future it might useful

	 * to add DT property to set this depending on the platform needs

	 */

	regmap_write(regmap, LINEOUT_CFG, 0x1111);



	return devm_snd_soc_register_component(dev, &t9015_codec_driver,

					       &t9015_dai, 1);

}



static const struct of_device_id t9015_ids[] = {

	{ .compatible = "amlogic,t9015", },

	{ }

};

MODULE_DEVICE_TABLE(of, t9015_ids);



static struct platform_driver t9015_driver = {

	.driver = {

		.name = "t9015-codec",

		.of_match_table = of_match_ptr(t9015_ids),

	},

	.probe = t9015_probe,

};



module_platform_driver(t9015_driver);



MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver");

MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");

MODULE_LICENSE("GPL");