Unverified Commit 16123412 authored by Piotr Stankiewicz's avatar Piotr Stankiewicz Committed by Mark Brown
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ASoC: lochnagar: Add driver to support Lochnagar 2 sound card 



Lochnagar is an evaluation and development board for Cirrus
Logic Smart CODEC and Amp devices. It allows the connection of
most Cirrus Logic devices on mini-cards, as well as allowing
connection of various application processor systems to provide a
full evaluation platform.

Lochnagar 2 provides a set of line inputs/outputs, and a USB audio
device. This driver adds support for these analog line connections and
the Lochnagar side of the USB audio link.

Signed-off-by: default avatarPiotr Stankiewicz <piotrs@opensource.cirrus.com>
Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d9b27d50

MAINTAINERS

+2 −0
Original line number Diff line number Diff line
@@ -3799,6 +3799,7 @@ F: drivers/clk/clk-lochnagar.c 
F:	drivers/mfd/lochnagar-i2c.c

F:	drivers/pinctrl/cirrus/pinctrl-lochnagar.c

F:	drivers/regulator/lochnagar-regulator.c

F:	sound/soc/codecs/lochnagar-sc.c

F:	include/dt-bindings/clk/lochnagar.h

F:	include/dt-bindings/pinctrl/lochnagar.h

F:	include/linux/mfd/lochnagar*
@@ -3806,6 +3807,7 @@ F: Documentation/devicetree/bindings/mfd/cirrus,lochnagar.txt 
F:	Documentation/devicetree/bindings/clock/cirrus,lochnagar.txt

F:	Documentation/devicetree/bindings/pinctrl/cirrus,lochnagar.txt

F:	Documentation/devicetree/bindings/regulator/cirrus,lochnagar.txt

F:	Documentation/devicetree/bindings/sound/cirrus,lochnagar.txt



CISCO FCOE HBA DRIVER

M:	Satish Kharat <satishkh@cisco.com>

sound/soc/codecs/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -94,6 +94,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_JZ4725B_CODEC

	select SND_SOC_LM4857 if I2C

	select SND_SOC_LM49453 if I2C

	select SND_SOC_LOCHNAGAR_SC

	select SND_SOC_MAX98088 if I2C

	select SND_SOC_MAX98090 if I2C

	select SND_SOC_MAX98095 if I2C
@@ -688,6 +689,13 @@ config SND_SOC_ISABELLE 
config SND_SOC_LM49453

	tristate



config SND_SOC_LOCHNAGAR_SC

	tristate "Lochnagar Sound Card"

	depends on MFD_LOCHNAGAR

	help

	  This driver support the sound card functionality of the Cirrus

	  Logic Lochnagar audio development board.



config SND_SOC_MAX98088

	tristate "Maxim MAX98088/9 Low-Power, Stereo Audio Codec"

	depends on I2C

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ snd-soc-jz4725b-codec-objs := jz4725b.o 
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-max9759-objs := max9759.o

snd-soc-max9768-objs := max9768.o

snd-soc-max98088-objs := max98088.o
@@ -364,6 +365,7 @@ obj-$(CONFIG_SND_SOC_JZ4725B_CODEC) += snd-soc-jz4725b-codec.o 
obj-$(CONFIG_SND_SOC_L3)	+= snd-soc-l3.o

obj-$(CONFIG_SND_SOC_LM4857)	+= snd-soc-lm4857.o

obj-$(CONFIG_SND_SOC_LM49453)   += snd-soc-lm49453.o

obj-$(CONFIG_SND_SOC_LOCHNAGAR_SC)	+= snd-soc-lochnagar-sc.o

obj-$(CONFIG_SND_SOC_MAX9759)	+= snd-soc-max9759.o

obj-$(CONFIG_SND_SOC_MAX9768)	+= snd-soc-max9768.o

obj-$(CONFIG_SND_SOC_MAX98088)	+= snd-soc-max98088.o

sound/soc/codecs/lochnagar-sc.c

0 → 100644
+266 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

//

// Lochnagar sound card driver

//

// Copyright (c) 2017-2019 Cirrus Logic, Inc. and

//                         Cirrus Logic International Semiconductor Ltd.

//

// Author: Charles Keepax <ckeepax@opensource.cirrus.com>

//         Piotr Stankiewicz <piotrs@opensource.cirrus.com>



#include <linux/clk.h>

#include <linux/module.h>

#include <sound/soc.h>



#include <linux/mfd/lochnagar.h>

#include <linux/mfd/lochnagar1_regs.h>

#include <linux/mfd/lochnagar2_regs.h>



struct lochnagar_sc_priv {

	struct clk *mclk;

};



static const struct snd_soc_dapm_widget lochnagar_sc_widgets[] = {

	SND_SOC_DAPM_LINE("Line Jack", NULL),

	SND_SOC_DAPM_LINE("USB Audio", NULL),

};



static const struct snd_soc_dapm_route lochnagar_sc_routes[] = {

	{ "Line Jack", NULL, "AIF1 Playback" },

	{ "AIF1 Capture", NULL, "Line Jack" },



	{ "USB Audio", NULL, "USB1 Playback" },

	{ "USB Audio", NULL, "USB2 Playback" },

	{ "USB1 Capture", NULL, "USB Audio" },

	{ "USB2 Capture", NULL, "USB Audio" },

};



static const unsigned int lochnagar_sc_chan_vals[] = {

	4, 8,

};



static const struct snd_pcm_hw_constraint_list lochnagar_sc_chan_constraint = {

	.count = ARRAY_SIZE(lochnagar_sc_chan_vals),

	.list = lochnagar_sc_chan_vals,

};



static const unsigned int lochnagar_sc_rate_vals[] = {

	8000, 16000, 24000, 32000, 48000, 96000, 192000,

	22050, 44100, 88200, 176400,

};



static const struct snd_pcm_hw_constraint_list lochnagar_sc_rate_constraint = {

	.count = ARRAY_SIZE(lochnagar_sc_rate_vals),

	.list = lochnagar_sc_rate_vals,

};



static int lochnagar_sc_hw_rule_rate(struct snd_pcm_hw_params *params,

				     struct snd_pcm_hw_rule *rule)

{

	struct snd_interval range = {

		.min = 8000,

		.max = 24576000 / hw_param_interval(params, rule->deps[0])->max,

	};



	return snd_interval_refine(hw_param_interval(params, rule->var),

				   &range);

}



static int lochnagar_sc_startup(struct snd_pcm_substream *substream,

				struct snd_soc_dai *dai)

{

	struct snd_soc_component *comp = dai->component;

	struct lochnagar_sc_priv *priv = snd_soc_component_get_drvdata(comp);

	int ret;



	ret = snd_pcm_hw_constraint_list(substream->runtime, 0,

					 SNDRV_PCM_HW_PARAM_RATE,

					 &lochnagar_sc_rate_constraint);

	if (ret)

		return ret;



	return snd_pcm_hw_rule_add(substream->runtime, 0,

				   SNDRV_PCM_HW_PARAM_RATE,

				   lochnagar_sc_hw_rule_rate, priv,

				   SNDRV_PCM_HW_PARAM_FRAME_BITS, -1);

}



static int lochnagar_sc_line_startup(struct snd_pcm_substream *substream,

				     struct snd_soc_dai *dai)

{

	struct snd_soc_component *comp = dai->component;

	struct lochnagar_sc_priv *priv = snd_soc_component_get_drvdata(comp);

	int ret;



	ret = clk_prepare_enable(priv->mclk);

	if (ret < 0) {

		dev_err(dai->dev, "Failed to enable MCLK: %d\n", ret);

		return ret;

	}



	ret = lochnagar_sc_startup(substream, dai);

	if (ret)

		return ret;



	return snd_pcm_hw_constraint_list(substream->runtime, 0,

					  SNDRV_PCM_HW_PARAM_CHANNELS,

					  &lochnagar_sc_chan_constraint);

}



static void lochnagar_sc_line_shutdown(struct snd_pcm_substream *substream,

				       struct snd_soc_dai *dai)

{

	struct snd_soc_component *comp = dai->component;

	struct lochnagar_sc_priv *priv = snd_soc_component_get_drvdata(comp);



	clk_disable_unprepare(priv->mclk);

}



static int lochnagar_sc_check_fmt(struct snd_soc_dai *dai, unsigned int fmt,

				  unsigned int tar)

{

	tar |= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;



	if ((fmt & ~SND_SOC_DAIFMT_CLOCK_MASK) != tar)

		return -EINVAL;



	return 0;

}



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

{

	return lochnagar_sc_check_fmt(dai, fmt, SND_SOC_DAIFMT_CBS_CFS);

}



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

{

	return lochnagar_sc_check_fmt(dai, fmt, SND_SOC_DAIFMT_CBM_CFM);

}



static const struct snd_soc_dai_ops lochnagar_sc_line_ops = {

	.startup = lochnagar_sc_line_startup,

	.shutdown = lochnagar_sc_line_shutdown,

	.set_fmt = lochnagar_sc_set_line_fmt,

};



static const struct snd_soc_dai_ops lochnagar_sc_usb_ops = {

	.startup = lochnagar_sc_startup,

	.set_fmt = lochnagar_sc_set_usb_fmt,

};



static struct snd_soc_dai_driver lochnagar_sc_dai[] = {

	{

		.name = "lochnagar-line",

		.playback = {

			.stream_name = "AIF1 Playback",

			.channels_min = 4,

			.channels_max = 8,

			.rates = SNDRV_PCM_RATE_KNOT,

			.formats = SNDRV_PCM_FMTBIT_S32_LE,

		},

		.capture = {

			.stream_name = "AIF1 Capture",

			.channels_min = 4,

			.channels_max = 8,

			.rates = SNDRV_PCM_RATE_KNOT,

			.formats = SNDRV_PCM_FMTBIT_S32_LE,

		},

		.ops = &lochnagar_sc_line_ops,

		.symmetric_rates = true,

		.symmetric_samplebits = true,

	},

	{

		.name = "lochnagar-usb1",

		.playback = {

			.stream_name = "USB1 Playback",

			.channels_min = 1,

			.channels_max = 8,

			.rates = SNDRV_PCM_RATE_KNOT,

			.formats = SNDRV_PCM_FMTBIT_S32_LE,

		},

		.capture = {

			.stream_name = "USB1 Capture",

			.channels_min = 1,

			.channels_max = 8,

			.rates = SNDRV_PCM_RATE_KNOT,

			.formats = SNDRV_PCM_FMTBIT_S32_LE,

		},

		.ops = &lochnagar_sc_usb_ops,

		.symmetric_rates = true,

		.symmetric_samplebits = true,

	},

	{

		.name = "lochnagar-usb2",

		.playback = {

			.stream_name = "USB2 Playback",

			.channels_min = 1,

			.channels_max = 8,

			.rates = SNDRV_PCM_RATE_KNOT,

			.formats = SNDRV_PCM_FMTBIT_S32_LE,

		},

		.capture = {

			.stream_name = "USB2 Capture",

			.channels_min = 1,

			.channels_max = 8,

			.rates = SNDRV_PCM_RATE_KNOT,

			.formats = SNDRV_PCM_FMTBIT_S32_LE,

		},

		.ops = &lochnagar_sc_usb_ops,

		.symmetric_rates = true,

		.symmetric_samplebits = true,

	},

};



static const struct snd_soc_component_driver lochnagar_sc_driver = {

	.non_legacy_dai_naming = 1,



	.dapm_widgets = lochnagar_sc_widgets,

	.num_dapm_widgets = ARRAY_SIZE(lochnagar_sc_widgets),

	.dapm_routes = lochnagar_sc_routes,

	.num_dapm_routes = ARRAY_SIZE(lochnagar_sc_routes),

};



static int lochnagar_sc_probe(struct platform_device *pdev)

{

	struct lochnagar_sc_priv *priv;

	int ret;



	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;



	priv->mclk = devm_clk_get(&pdev->dev, "mclk");

	if (IS_ERR(priv->mclk)) {

		ret = PTR_ERR(priv->mclk);

		dev_err(&pdev->dev, "Failed to get MCLK: %d\n", ret);

		return ret;

	}



	platform_set_drvdata(pdev, priv);



	return devm_snd_soc_register_component(&pdev->dev,

					       &lochnagar_sc_driver,

					       lochnagar_sc_dai,

					       ARRAY_SIZE(lochnagar_sc_dai));

}



static const struct of_device_id lochnagar_of_match[] = {

	{ .compatible = "cirrus,lochnagar2-soundcard" },

	{}

};

MODULE_DEVICE_TABLE(of, lochnagar_of_match);



static struct platform_driver lochnagar_sc_codec_driver = {

	.driver = {

		.name = "lochnagar-soundcard",

		.of_match_table = of_match_ptr(lochnagar_of_match),

	},



	.probe = lochnagar_sc_probe,

};

module_platform_driver(lochnagar_sc_codec_driver);



MODULE_DESCRIPTION("ASoC Lochnagar Sound Card Driver");

MODULE_AUTHOR("Piotr Stankiewicz <piotrs@opensource.cirrus.com>");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:lochnagar-soundcard");

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