[linux.git] / sound / soc / meson / g12a-toacodec.c

// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2020 BayLibre, SAS.
// Author: Jerome Brunet <[email protected]>

#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/module.h>
#include <sound/pcm_params.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>

#include <dt-bindings/sound/meson-g12a-toacodec.h>
#include "axg-tdm.h"
#include "meson-codec-glue.h"

#define G12A_TOACODEC_DRV_NAME "g12a-toacodec"

#define TOACODEC_CTRL0			0x0
#define  CTRL0_ENABLE_SHIFT		31
#define  CTRL0_DAT_SEL_SHIFT		14
#define  CTRL0_DAT_SEL			(0x3 << CTRL0_DAT_SEL_SHIFT)
#define  CTRL0_LANE_SEL			12
#define  CTRL0_LRCLK_SEL		GENMASK(9, 8)
#define  CTRL0_BLK_CAP_INV		BIT(7)
#define  CTRL0_BCLK_O_INV		BIT(6)
#define  CTRL0_BCLK_SEL			GENMASK(5, 4)
#define  CTRL0_MCLK_SEL			GENMASK(2, 0)

#define TOACODEC_OUT_CHMAX		2

static const char * const g12a_toacodec_mux_texts[] = {
	"I2S A", "I2S B", "I2S C",
};

static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_component *component =
		snd_soc_dapm_kcontrol_component(kcontrol);
	struct snd_soc_dapm_context *dapm =
		snd_soc_dapm_kcontrol_dapm(kcontrol);
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
	unsigned int mux, changed;

	mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
	changed = snd_soc_component_test_bits(component, e->reg,
					      CTRL0_DAT_SEL,
					      FIELD_PREP(CTRL0_DAT_SEL, mux));

	if (!changed)
		return 0;

	/* Force disconnect of the mux while updating */
	snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);

	snd_soc_component_update_bits(component, e->reg,
				      CTRL0_DAT_SEL |
				      CTRL0_LRCLK_SEL |
				      CTRL0_BCLK_SEL,
				      FIELD_PREP(CTRL0_DAT_SEL, mux) |
				      FIELD_PREP(CTRL0_LRCLK_SEL, mux) |
				      FIELD_PREP(CTRL0_BCLK_SEL, mux));

	/*
	 * FIXME:
	 * On this soc, the glue gets the MCLK directly from the clock
	 * controller instead of going the through the TDM interface.
	 *
	 * Here we assume interface A uses clock A, etc ... While it is
	 * true for now, it could be different. Instead the glue should
	 * find out the clock used by the interface and select the same
	 * source. For that, we will need regmap backed clock mux which
	 * is a work in progress
	 */
	snd_soc_component_update_bits(component, e->reg,
				      CTRL0_MCLK_SEL,
				      FIELD_PREP(CTRL0_MCLK_SEL, mux));

	snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);

	return 0;
}

static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0,
			    CTRL0_DAT_SEL_SHIFT,
			    g12a_toacodec_mux_texts);

static const struct snd_kcontrol_new g12a_toacodec_mux =
	SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum,
			  snd_soc_dapm_get_enum_double,
			  g12a_toacodec_mux_put_enum);

static const struct snd_kcontrol_new g12a_toacodec_out_enable =
	SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0,
				    CTRL0_ENABLE_SHIFT, 1, 0);

static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = {
	SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
			 &g12a_toacodec_mux),
	SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
			    &g12a_toacodec_out_enable),
};

static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream,
					 struct snd_pcm_hw_params *params,
					 struct snd_soc_dai *dai)
{
	struct meson_codec_glue_input *data;
	int ret;

	ret = meson_codec_glue_input_hw_params(substream, params, dai);
	if (ret)
		return ret;

	/* The glue will provide 1 lane out of the 4 to the output */
	data = meson_codec_glue_input_get_data(dai);
	data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX,
					data->params.channels_min);
	data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX,
					data->params.channels_max);

	return 0;
}

static const struct snd_soc_dai_ops g12a_toacodec_input_ops = {
	.hw_params	= g12a_toacodec_input_hw_params,
	.set_fmt	= meson_codec_glue_input_set_fmt,
};

static const struct snd_soc_dai_ops g12a_toacodec_output_ops = {
	.startup	= meson_codec_glue_output_startup,
};

#define TOACODEC_STREAM(xname, xsuffix, xchmax)			\
{								\
	.stream_name	= xname " " xsuffix,			\
	.channels_min	= 1,					\
	.channels_max	= (xchmax),				\
	.rate_min       = 5512,					\
	.rate_max	= 192000,				\
	.formats	= AXG_TDM_FORMATS,			\
}

#define TOACODEC_INPUT(xname, xid) {					\
	.name = xname,							\
	.id = (xid),							\
	.playback = TOACODEC_STREAM(xname, "Playback", 8),		\
	.ops = &g12a_toacodec_input_ops,				\
	.probe = meson_codec_glue_input_dai_probe,			\
	.remove = meson_codec_glue_input_dai_remove,			\
}

#define TOACODEC_OUTPUT(xname, xid) {					\
	.name = xname,							\
	.id = (xid),							\
	.capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \
	.ops = &g12a_toacodec_output_ops,				\
}

static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = {
	TOACODEC_INPUT("IN A", TOACODEC_IN_A),
	TOACODEC_INPUT("IN B", TOACODEC_IN_B),
	TOACODEC_INPUT("IN C", TOACODEC_IN_C),
	TOACODEC_OUTPUT("OUT", TOACODEC_OUT),
};

static int g12a_toacodec_component_probe(struct snd_soc_component *c)
{
	/* Initialize the static clock parameters */
	return snd_soc_component_write(c, TOACODEC_CTRL0,
				       CTRL0_BLK_CAP_INV);
}

static const struct snd_soc_dapm_route g12a_toacodec_routes[] = {
	{ "SRC", "I2S A", "IN A Playback" },
	{ "SRC", "I2S B", "IN B Playback" },
	{ "SRC", "I2S C", "IN C Playback" },
	{ "OUT EN", "Switch", "SRC" },
	{ "OUT Capture", NULL, "OUT EN" },
};

static const struct snd_kcontrol_new g12a_toacodec_controls[] = {
	SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0),
};

static const struct snd_soc_component_driver g12a_toacodec_component_drv = {
	.probe			= g12a_toacodec_component_probe,
	.controls		= g12a_toacodec_controls,
	.num_controls		= ARRAY_SIZE(g12a_toacodec_controls),
	.dapm_widgets		= g12a_toacodec_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(g12a_toacodec_widgets),
	.dapm_routes		= g12a_toacodec_routes,
	.num_dapm_routes	= ARRAY_SIZE(g12a_toacodec_routes),
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static const struct regmap_config g12a_toacodec_regmap_cfg = {
	.reg_bits	= 32,
	.val_bits	= 32,
	.reg_stride	= 4,
};

static const struct of_device_id g12a_toacodec_of_match[] = {
	{ .compatible = "amlogic,g12a-toacodec", },
	{}
};
MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);

static int g12a_toacodec_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	void __iomem *regs;
	struct regmap *map;
	int ret;

	ret = device_reset(dev);
	if (ret)
		return ret;

	regs = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(regs))
		return PTR_ERR(regs);

	map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg);
	if (IS_ERR(map)) {
		dev_err(dev, "failed to init regmap: %ld\n",
			PTR_ERR(map));
		return PTR_ERR(map);
	}

	return devm_snd_soc_register_component(dev,
			&g12a_toacodec_component_drv, g12a_toacodec_dai_drv,
			ARRAY_SIZE(g12a_toacodec_dai_drv));
}

static struct platform_driver g12a_toacodec_pdrv = {
	.driver = {
		.name = G12A_TOACODEC_DRV_NAME,
		.of_match_table = g12a_toacodec_of_match,
	},
	.probe = g12a_toacodec_probe,
};
module_platform_driver(g12a_toacodec_pdrv);

MODULE_AUTHOR("Jerome Brunet <[email protected]>");
MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
af2618a2 JB	1	// SPDX-License-Identifier: GPL-2.0
	2	//
	3	// Copyright (c) 2020 BayLibre, SAS.
	4	// Author: Jerome Brunet <[email protected]>
	5
	6	#include <linux/bitfield.h>
	7	#include <linux/clk.h>
	8	#include <linux/module.h>
	9	#include <sound/pcm_params.h>
	10	#include <linux/regmap.h>
	11	#include <linux/regulator/consumer.h>
	12	#include <linux/reset.h>
	13	#include <sound/soc.h>
	14	#include <sound/soc-dai.h>
	15
	16	#include <dt-bindings/sound/meson-g12a-toacodec.h>
	17	#include "axg-tdm.h"
	18	#include "meson-codec-glue.h"
	19
	20	#define G12A_TOACODEC_DRV_NAME "g12a-toacodec"
	21
	22	#define TOACODEC_CTRL0 0x0
	23	#define CTRL0_ENABLE_SHIFT 31
	24	#define CTRL0_DAT_SEL_SHIFT 14
	25	#define CTRL0_DAT_SEL (0x3 << CTRL0_DAT_SEL_SHIFT)
	26	#define CTRL0_LANE_SEL 12
	27	#define CTRL0_LRCLK_SEL GENMASK(9, 8)
	28	#define CTRL0_BLK_CAP_INV BIT(7)
	29	#define CTRL0_BCLK_O_INV BIT(6)
	30	#define CTRL0_BCLK_SEL GENMASK(5, 4)
	31	#define CTRL0_MCLK_SEL GENMASK(2, 0)
	32
	33	#define TOACODEC_OUT_CHMAX 2
	34
	35	static const char * const g12a_toacodec_mux_texts[] = {
	36	"I2S A", "I2S B", "I2S C",
	37	};
	38
	39	static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,
	40	struct snd_ctl_elem_value *ucontrol)
	41	{
	42	struct snd_soc_component *component =
	43	snd_soc_dapm_kcontrol_component(kcontrol);
	44	struct snd_soc_dapm_context *dapm =
	45	snd_soc_dapm_kcontrol_dapm(kcontrol);
	46	struct soc_enum e = (struct soc_enum )kcontrol->private_value;
	47	unsigned int mux, changed;
	48
	49	mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
	50	changed = snd_soc_component_test_bits(component, e->reg,
	51	CTRL0_DAT_SEL,
	52	FIELD_PREP(CTRL0_DAT_SEL, mux));
	53
	54	if (!changed)
	55	return 0;
	56
	57	/* Force disconnect of the mux while updating */
	58	snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
	59
	60	snd_soc_component_update_bits(component, e->reg,
	61	CTRL0_DAT_SEL \|
	62	CTRL0_LRCLK_SEL \|
	63	CTRL0_BCLK_SEL,
	64	FIELD_PREP(CTRL0_DAT_SEL, mux) \|
65	FIELD_PREP(CTRL0_LRCLK_SEL, mux) \|
66	FIELD_PREP(CTRL0_BCLK_SEL, mux));
67
68	/*
69	* FIXME:
70	* On this soc, the glue gets the MCLK directly from the clock
71	* controller instead of going the through the TDM interface.
72	*
73	* Here we assume interface A uses clock A, etc ... While it is
74	* true for now, it could be different. Instead the glue should
75	* find out the clock used by the interface and select the same
76	* source. For that, we will need regmap backed clock mux which
77	* is a work in progress
78	*/
79	snd_soc_component_update_bits(component, e->reg,
80	CTRL0_MCLK_SEL,
81	FIELD_PREP(CTRL0_MCLK_SEL, mux));
82
83	snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
84
85	return 0;
86	}
87
88	static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0,
89	CTRL0_DAT_SEL_SHIFT,
90	g12a_toacodec_mux_texts);
91
92	static const struct snd_kcontrol_new g12a_toacodec_mux =
93	SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum,
94	snd_soc_dapm_get_enum_double,
95	g12a_toacodec_mux_put_enum);
96
97	static const struct snd_kcontrol_new g12a_toacodec_out_enable =
98	SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0,
99	CTRL0_ENABLE_SHIFT, 1, 0);
100
101	static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = {
102	SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
103	&g12a_toacodec_mux),
104	SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
105	&g12a_toacodec_out_enable),
106	};
107
108	static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream,
109	struct snd_pcm_hw_params *params,
110	struct snd_soc_dai *dai)
111	{
112	struct meson_codec_glue_input *data;
113	int ret;
114
115	ret = meson_codec_glue_input_hw_params(substream, params, dai);
116	if (ret)
117	return ret;
118
119	/* The glue will provide 1 lane out of the 4 to the output */
120	data = meson_codec_glue_input_get_data(dai);
121	data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX,
122	data->params.channels_min);
123	data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX,
124	data->params.channels_max);
125
126	return 0;
127	}
128
129	static const struct snd_soc_dai_ops g12a_toacodec_input_ops = {
130	.hw_params = g12a_toacodec_input_hw_params,
131	.set_fmt = meson_codec_glue_input_set_fmt,
132	};
133
134	static const struct snd_soc_dai_ops g12a_toacodec_output_ops = {
135	.startup = meson_codec_glue_output_startup,
136	};
137
138	#define TOACODEC_STREAM(xname, xsuffix, xchmax) \
139	{ \
140	.stream_name = xname " " xsuffix, \
141	.channels_min = 1, \
142	.channels_max = (xchmax), \
143	.rate_min = 5512, \
144	.rate_max = 192000, \
145	.formats = AXG_TDM_FORMATS, \
146	}
147
148	#define TOACODEC_INPUT(xname, xid) { \
149	.name = xname, \
150	.id = (xid), \
151	.playback = TOACODEC_STREAM(xname, "Playback", 8), \
152	.ops = &g12a_toacodec_input_ops, \
153	.probe = meson_codec_glue_input_dai_probe, \
154	.remove = meson_codec_glue_input_dai_remove, \
155	}
156
157	#define TOACODEC_OUTPUT(xname, xid) { \
158	.name = xname, \
159	.id = (xid), \
160	.capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \
161	.ops = &g12a_toacodec_output_ops, \
162	}
163
164	static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = {
165	TOACODEC_INPUT("IN A", TOACODEC_IN_A),
166	TOACODEC_INPUT("IN B", TOACODEC_IN_B),
167	TOACODEC_INPUT("IN C", TOACODEC_IN_C),
168	TOACODEC_OUTPUT("OUT", TOACODEC_OUT),
169	};
170
171	static int g12a_toacodec_component_probe(struct snd_soc_component *c)
172	{
173	/* Initialize the static clock parameters */
174	return snd_soc_component_write(c, TOACODEC_CTRL0,
175	CTRL0_BLK_CAP_INV);
176	}
177
178	static const struct snd_soc_dapm_route g12a_toacodec_routes[] = {
179	{ "SRC", "I2S A", "IN A Playback" },
180	{ "SRC", "I2S B", "IN B Playback" },
181	{ "SRC", "I2S C", "IN C Playback" },
182	{ "OUT EN", "Switch", "SRC" },
183	{ "OUT Capture", NULL, "OUT EN" },
184	};
185
186	static const struct snd_kcontrol_new g12a_toacodec_controls[] = {
187	SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0),
188	};
189
190	static const struct snd_soc_component_driver g12a_toacodec_component_drv = {
191	.probe = g12a_toacodec_component_probe,
192	.controls = g12a_toacodec_controls,
193	.num_controls = ARRAY_SIZE(g12a_toacodec_controls),
194	.dapm_widgets = g12a_toacodec_widgets,
195	.num_dapm_widgets = ARRAY_SIZE(g12a_toacodec_widgets),
196	.dapm_routes = g12a_toacodec_routes,
197	.num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes),
198	.endianness = 1,
199	.non_legacy_dai_naming = 1,
200	};
201
202	static const struct regmap_config g12a_toacodec_regmap_cfg = {
203	.reg_bits = 32,
204	.val_bits = 32,
205	.reg_stride = 4,
206	};
207
208	static const struct of_device_id g12a_toacodec_of_match[] = {
209	{ .compatible = "amlogic,g12a-toacodec", },
210	{}
211	};
212	MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);
213
214	static int g12a_toacodec_probe(struct platform_device *pdev)
215	{
216	struct device *dev = &pdev->dev;
217	void __iomem *regs;
218	struct regmap *map;
219	int ret;
220
221	ret = device_reset(dev);
222	if (ret)
223	return ret;
224
225	regs = devm_platform_ioremap_resource(pdev, 0);
226	if (IS_ERR(regs))
227	return PTR_ERR(regs);
228
229	map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg);
230	if (IS_ERR(map)) {
231	dev_err(dev, "failed to init regmap: %ld\n",
232	PTR_ERR(map));
233	return PTR_ERR(map);
234	}
235
236	return devm_snd_soc_register_component(dev,
237	&g12a_toacodec_component_drv, g12a_toacodec_dai_drv,
238	ARRAY_SIZE(g12a_toacodec_dai_drv));
239	}
240
241	static struct platform_driver g12a_toacodec_pdrv = {
242	.driver = {
243	.name = G12A_TOACODEC_DRV_NAME,
244	.of_match_table = g12a_toacodec_of_match,
245	},
246	.probe = g12a_toacodec_probe,
247	};
248	module_platform_driver(g12a_toacodec_pdrv);
249
250	MODULE_AUTHOR("Jerome Brunet <[email protected]>");
251	MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver");
252	MODULE_LICENSE("GPL v2");