[deliverable/linux.git] / sound / soc / codecs / si476x.c

#include <linux/module.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

#include <linux/i2c.h>

#include <linux/mfd/si476x-core.h>

enum si476x_audio_registers {
	SI476X_DIGITAL_IO_OUTPUT_FORMAT		= 0x0203,
	SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE	= 0x0202,
};

enum si476x_digital_io_output_format {
	SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT	= 11,
	SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT	= 8,
};

#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK	((0b111 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
						  (0b111 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK	(0b1111110)

enum si476x_daudio_formats {
	SI476X_DAUDIO_MODE_I2S		= (0x0 << 1),
	SI476X_DAUDIO_MODE_DSP_A	= (0x6 << 1),
	SI476X_DAUDIO_MODE_DSP_B	= (0x7 << 1),
	SI476X_DAUDIO_MODE_LEFT_J	= (0x8 << 1),
	SI476X_DAUDIO_MODE_RIGHT_J	= (0x9 << 1),

	SI476X_DAUDIO_MODE_IB		= (1 << 5),
	SI476X_DAUDIO_MODE_IF		= (1 << 6),
};

enum si476x_pcm_format {
	SI476X_PCM_FORMAT_S8		= 2,
	SI476X_PCM_FORMAT_S16_LE	= 4,
	SI476X_PCM_FORMAT_S20_3LE	= 5,
	SI476X_PCM_FORMAT_S24_LE	= 6,
};

static unsigned int si476x_codec_read(struct snd_soc_codec *codec,
				      unsigned int reg)
{
	int err;
	struct si476x_core *core = codec->control_data;

	si476x_core_lock(core);
	err = si476x_core_cmd_get_property(core, reg);
	si476x_core_unlock(core);

	return err;
}

static int si476x_codec_write(struct snd_soc_codec *codec,
			      unsigned int reg, unsigned int val)
{
	int err;
	struct si476x_core *core = codec->control_data;

	si476x_core_lock(core);
	err = si476x_core_cmd_set_property(core, reg, val);
	si476x_core_unlock(core);

	return err;
}

static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
				    unsigned int fmt)
{
	int err;
	u16 format = 0;

	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
		return -EINVAL;

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_DSP_A:
		format |= SI476X_DAUDIO_MODE_DSP_A;
		break;
	case SND_SOC_DAIFMT_DSP_B:
		format |= SI476X_DAUDIO_MODE_DSP_B;
		break;
	case SND_SOC_DAIFMT_I2S:
		format |= SI476X_DAUDIO_MODE_I2S;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		format |= SI476X_DAUDIO_MODE_RIGHT_J;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		format |= SI476X_DAUDIO_MODE_LEFT_J;
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_DSP_A:
	case SND_SOC_DAIFMT_DSP_B:
		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
		case SND_SOC_DAIFMT_NB_NF:
			break;
		case SND_SOC_DAIFMT_IB_NF:
			format |= SI476X_DAUDIO_MODE_IB;
			break;
		default:
			return -EINVAL;
		}
		break;
	case SND_SOC_DAIFMT_I2S:
	case SND_SOC_DAIFMT_RIGHT_J:
	case SND_SOC_DAIFMT_LEFT_J:
		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
		case SND_SOC_DAIFMT_NB_NF:
			break;
		case SND_SOC_DAIFMT_IB_IF:
			format |= SI476X_DAUDIO_MODE_IB |
				SI476X_DAUDIO_MODE_IF;
			break;
		case SND_SOC_DAIFMT_IB_NF:
			format |= SI476X_DAUDIO_MODE_IB;
			break;
		case SND_SOC_DAIFMT_NB_IF:
			format |= SI476X_DAUDIO_MODE_IF;
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
	}

	err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
				  SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
				  format);
	if (err < 0) {
		dev_err(codec_dai->codec->dev, "Failed to set output format\n");
		return err;
	}
	
	return 0;
}

static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
				  struct snd_pcm_hw_params *params,
				  struct snd_soc_dai *dai)
{
	int rate, width, err;

	rate = params_rate(params);
	if (rate < 32000 || rate > 48000) {
		dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
		return -EINVAL;
	}

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S8:
		width = SI476X_PCM_FORMAT_S8;
	case SNDRV_PCM_FORMAT_S16_LE:
		width = SI476X_PCM_FORMAT_S16_LE;
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		width = SI476X_PCM_FORMAT_S20_3LE;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		width = SI476X_PCM_FORMAT_S24_LE;
		break;
	default:
		return -EINVAL;
	}

	err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
			    rate);
	if (err < 0) {
		dev_err(dai->codec->dev, "Failed to set sample rate\n");
		return err;
	}

	err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
				  SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
				  (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | 
				  (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
	if (err < 0) {
		dev_err(dai->codec->dev, "Failed to set output width\n");
		return err;
	}

	return 0;
}

static int si476x_codec_probe(struct snd_soc_codec *codec)
{
	codec->control_data = i2c_mfd_cell_to_core(codec->dev);
	return 0;
}

static struct snd_soc_dai_ops si476x_dai_ops = {
	.hw_params	= si476x_codec_hw_params,
	.set_fmt	= si476x_codec_set_dai_fmt,
};

static struct snd_soc_dai_driver si476x_dai = {
	.name		= "si476x-codec",
	.capture	= {
		.stream_name	= "Capture",
		.channels_min	= 2,
		.channels_max	= 2,

		.rates = SNDRV_PCM_RATE_32000 |
		SNDRV_PCM_RATE_44100 |
		SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FMTBIT_S8 |
		SNDRV_PCM_FMTBIT_S16_LE |
		SNDRV_PCM_FMTBIT_S20_3LE |
		SNDRV_PCM_FMTBIT_S24_LE
	},
	.ops		= &si476x_dai_ops,
};

static struct snd_soc_codec_driver soc_codec_dev_si476x = {
	.probe  = si476x_codec_probe,
	.read   = si476x_codec_read,
	.write  = si476x_codec_write,
};

static int si476x_platform_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
				      &si476x_dai, 1);
}

static int si476x_platform_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

MODULE_ALIAS("platform:si476x-codec");

static struct platform_driver si476x_platform_driver = {
	.driver		= {
		.name	= "si476x-codec",
		.owner	= THIS_MODULE,
	},
	.probe		= si476x_platform_probe,
	.remove		= si476x_platform_remove,
};
module_platform_driver(si476x_platform_driver);

MODULE_AUTHOR("Andrey Smirnov <andrey.smirnov@convergeddevices.net>");
MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
330345eb AS	1	#include <linux/module.h>
	2	#include <linux/slab.h>
	3	#include <sound/pcm.h>
	4	#include <sound/pcm_params.h>
	5	#include <sound/soc.h>
	6	#include <sound/initval.h>
	7
	8	#include <linux/i2c.h>
	9
	10	#include <linux/mfd/si476x-core.h>
	11
	12	enum si476x_audio_registers {
	13	SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
	14	SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
	15	};
	16
	17	enum si476x_digital_io_output_format {
	18	SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
	19	SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
	20	};
	21
	22	#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0b111 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) \| \
	23	(0b111 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
	24	#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0b1111110)
	25
	26	enum si476x_daudio_formats {
	27	SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
	28	SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
	29	SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
	30	SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
	31	SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
	32
	33	SI476X_DAUDIO_MODE_IB = (1 << 5),
	34	SI476X_DAUDIO_MODE_IF = (1 << 6),
	35	};
	36
	37	enum si476x_pcm_format {
	38	SI476X_PCM_FORMAT_S8 = 2,
	39	SI476X_PCM_FORMAT_S16_LE = 4,
	40	SI476X_PCM_FORMAT_S20_3LE = 5,
	41	SI476X_PCM_FORMAT_S24_LE = 6,
	42	};
	43
	44	static unsigned int si476x_codec_read(struct snd_soc_codec *codec,
	45	unsigned int reg)
	46	{
	47	int err;
	48	struct si476x_core *core = codec->control_data;
	49
	50	si476x_core_lock(core);
	51	err = si476x_core_cmd_get_property(core, reg);
	52	si476x_core_unlock(core);
	53
	54	return err;
	55	}
	56
	57	static int si476x_codec_write(struct snd_soc_codec *codec,
	58	unsigned int reg, unsigned int val)
	59	{
	60	int err;
	61	struct si476x_core *core = codec->control_data;
	62
	63	si476x_core_lock(core);
	64	err = si476x_core_cmd_set_property(core, reg, val);
65	si476x_core_unlock(core);
66
67	return err;
68	}
69
70	static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
71	unsigned int fmt)
72	{
73	int err;
74	u16 format = 0;
75
76	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
77	return -EINVAL;
78
79	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
80	case SND_SOC_DAIFMT_DSP_A:
81	format \|= SI476X_DAUDIO_MODE_DSP_A;
82	break;
83	case SND_SOC_DAIFMT_DSP_B:
84	format \|= SI476X_DAUDIO_MODE_DSP_B;
85	break;
86	case SND_SOC_DAIFMT_I2S:
87	format \|= SI476X_DAUDIO_MODE_I2S;
88	break;
89	case SND_SOC_DAIFMT_RIGHT_J:
90	format \|= SI476X_DAUDIO_MODE_RIGHT_J;
91	break;
92	case SND_SOC_DAIFMT_LEFT_J:
93	format \|= SI476X_DAUDIO_MODE_LEFT_J;
94	break;
95	default:
96	return -EINVAL;
97	}
98
99	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
100	case SND_SOC_DAIFMT_DSP_A:
101	case SND_SOC_DAIFMT_DSP_B:
102	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
103	case SND_SOC_DAIFMT_NB_NF:
104	break;
105	case SND_SOC_DAIFMT_IB_NF:
106	format \|= SI476X_DAUDIO_MODE_IB;
107	break;
108	default:
109	return -EINVAL;
110	}
111	break;
112	case SND_SOC_DAIFMT_I2S:
113	case SND_SOC_DAIFMT_RIGHT_J:
114	case SND_SOC_DAIFMT_LEFT_J:
115	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
116	case SND_SOC_DAIFMT_NB_NF:
117	break;
118	case SND_SOC_DAIFMT_IB_IF:
119	format \|= SI476X_DAUDIO_MODE_IB \|
120	SI476X_DAUDIO_MODE_IF;
121	break;
122	case SND_SOC_DAIFMT_IB_NF:
123	format \|= SI476X_DAUDIO_MODE_IB;
124	break;
125	case SND_SOC_DAIFMT_NB_IF:
126	format \|= SI476X_DAUDIO_MODE_IF;
127	break;
128	default:
129	return -EINVAL;
130	}
131	break;
132	default:
133	return -EINVAL;
134	}
135
136	err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
137	SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
138	format);
139	if (err < 0) {
140	dev_err(codec_dai->codec->dev, "Failed to set output format\n");
141	return err;
142	}
143
144	return 0;
145	}
146
147	static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
148	struct snd_pcm_hw_params *params,
149	struct snd_soc_dai *dai)
150	{
151	int rate, width, err;
152
153	rate = params_rate(params);
154	if (rate < 32000 \|\| rate > 48000) {
155	dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
156	return -EINVAL;
157	}
158
159	switch (params_format(params)) {
160	case SNDRV_PCM_FORMAT_S8:
161	width = SI476X_PCM_FORMAT_S8;
162	case SNDRV_PCM_FORMAT_S16_LE:
163	width = SI476X_PCM_FORMAT_S16_LE;
164	break;
165	case SNDRV_PCM_FORMAT_S20_3LE:
166	width = SI476X_PCM_FORMAT_S20_3LE;
167	break;
168	case SNDRV_PCM_FORMAT_S24_LE:
169	width = SI476X_PCM_FORMAT_S24_LE;
170	break;
171	default:
172	return -EINVAL;
173	}
174
175	err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
176	rate);
177	if (err < 0) {
178	dev_err(dai->codec->dev, "Failed to set sample rate\n");
179	return err;
180	}
181
182	err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
183	SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
184	(width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) \|
185	(width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
186	if (err < 0) {
187	dev_err(dai->codec->dev, "Failed to set output width\n");
188	return err;
189	}
190
191	return 0;
192	}
193
194	static int si476x_codec_probe(struct snd_soc_codec *codec)
195	{
196	codec->control_data = i2c_mfd_cell_to_core(codec->dev);
197	return 0;
198	}
199
200	static struct snd_soc_dai_ops si476x_dai_ops = {
201	.hw_params = si476x_codec_hw_params,
202	.set_fmt = si476x_codec_set_dai_fmt,
203	};
204
205	static struct snd_soc_dai_driver si476x_dai = {
206	.name = "si476x-codec",
207	.capture = {
208	.stream_name = "Capture",
209	.channels_min = 2,
210	.channels_max = 2,
211
212	.rates = SNDRV_PCM_RATE_32000 \|
213	SNDRV_PCM_RATE_44100 \|
214	SNDRV_PCM_RATE_48000,
215	.formats = SNDRV_PCM_FMTBIT_S8 \|
216	SNDRV_PCM_FMTBIT_S16_LE \|
217	SNDRV_PCM_FMTBIT_S20_3LE \|
218	SNDRV_PCM_FMTBIT_S24_LE
219	},
220	.ops = &si476x_dai_ops,
221	};
222
223	static struct snd_soc_codec_driver soc_codec_dev_si476x = {
224	.probe = si476x_codec_probe,
225	.read = si476x_codec_read,
226	.write = si476x_codec_write,
227	};
228
7a79e94e	229	static int si476x_platform_probe(struct platform_device *pdev)
330345eb AS	230	{
	231	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
	232	&si476x_dai, 1);
	233	}
	234
7a79e94e	235	static int si476x_platform_remove(struct platform_device *pdev)
330345eb AS	236	{
	237	snd_soc_unregister_codec(&pdev->dev);
	238	return 0;
	239	}
	240
	241	MODULE_ALIAS("platform:si476x-codec");
	242
	243	static struct platform_driver si476x_platform_driver = {
	244	.driver = {
	245	.name = "si476x-codec",
	246	.owner = THIS_MODULE,
	247	},
	248	.probe = si476x_platform_probe,
7a79e94e	249	.remove = si476x_platform_remove,
330345eb AS	250	};
	251	module_platform_driver(si476x_platform_driver);
	252
	253	MODULE_AUTHOR("Andrey Smirnov <andrey.smirnov@convergeddevices.net>");
	254	MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
	255	MODULE_LICENSE("GPL");