[deliverable/linux.git] / sound / soc / intel / boards / cht_bsw_max98090_ti.c

/*
 *  cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
 *  platforms Cherrytrail and Braswell, with max98090 & TI codec.
 *
 *  Copyright (C) 2015 Intel Corp
 *  Author: Fang, Yang A <yang.a.fang@intel.com>
 *  This file is modified from cht_bsw_rt5645.c
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License.
 *
 *  This program is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../../codecs/max98090.h"
#include "../atom/sst-atom-controls.h"
#include "../../codecs/ts3a227e.h"

#define CHT_PLAT_CLK_3_HZ	19200000
#define CHT_CODEC_DAI	"HiFi"

struct cht_mc_private {
	struct snd_soc_jack jack;
	bool ts3a227e_present;
};

static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
{
	int i;

	for (i = 0; i < card->num_rtd; i++) {
		struct snd_soc_pcm_runtime *rtd;

		rtd = card->rtd + i;
		if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
			     strlen(CHT_CODEC_DAI)))
			return rtd->codec_dai;
	}
	return NULL;
}

static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Int Mic", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
};

static const struct snd_soc_dapm_route cht_audio_map[] = {
	{"IN34", NULL, "Headset Mic"},
	{"Headset Mic", NULL, "MICBIAS"},
	{"DMICL", NULL, "Int Mic"},
	{"Headphone", NULL, "HPL"},
	{"Headphone", NULL, "HPR"},
	{"Ext Spk", NULL, "SPKL"},
	{"Ext Spk", NULL, "SPKR"},
	{"AIF1 Playback", NULL, "ssp2 Tx"},
	{"ssp2 Tx", NULL, "codec_out0"},
	{"ssp2 Tx", NULL, "codec_out1"},
	{"codec_in0", NULL, "ssp2 Rx" },
	{"codec_in1", NULL, "ssp2 Rx" },
	{"ssp2 Rx", NULL, "AIF1 Capture"},
};

static const struct snd_kcontrol_new cht_mc_controls[] = {
	SOC_DAPM_PIN_SWITCH("Headphone"),
	SOC_DAPM_PIN_SWITCH("Headset Mic"),
	SOC_DAPM_PIN_SWITCH("Int Mic"),
	SOC_DAPM_PIN_SWITCH("Ext Spk"),
};

static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
			     struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	int ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
				     CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
	if (ret < 0) {
		dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
		return ret;
	}

	return 0;
}

static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
{
	int ret;
	int jack_type;
	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
	struct snd_soc_jack *jack = &ctx->jack;

	/**
	* TI supports 4 butons headset detection
	* KEY_MEDIA
	* KEY_VOICECOMMAND
	* KEY_VOLUMEUP
	* KEY_VOLUMEDOWN
	*/
	if (ctx->ts3a227e_present)
		jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
					SND_JACK_BTN_0 | SND_JACK_BTN_1 |
					SND_JACK_BTN_2 | SND_JACK_BTN_3;
	else
		jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;

	ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
					jack_type, jack, NULL, 0);

	if (ret) {
		dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
		return ret;
	}

	return ret;
}

static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
			    struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
			SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval *channels = hw_param_interval(params,
						SNDRV_PCM_HW_PARAM_CHANNELS);
	int ret = 0;
	unsigned int fmt = 0;

	ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
	if (ret < 0) {
		dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
		return ret;
	}

	fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF
				| SND_SOC_DAIFMT_CBS_CFS;

	ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
	if (ret < 0) {
		dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
		return ret;
	}

	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
	rate->min = rate->max = 48000;
	channels->min = channels->max = 2;

	/* set SSP2 to 24-bit */
	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
	return 0;
}

static unsigned int rates_48000[] = {
	48000,
};

static struct snd_pcm_hw_constraint_list constraints_48000 = {
	.count = ARRAY_SIZE(rates_48000),
	.list  = rates_48000,
};

static int cht_aif1_startup(struct snd_pcm_substream *substream)
{
	return snd_pcm_hw_constraint_list(substream->runtime, 0,
			SNDRV_PCM_HW_PARAM_RATE,
			&constraints_48000);
}

static int cht_max98090_headset_init(struct snd_soc_component *component)
{
	struct snd_soc_card *card = component->card;
	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);

	return ts3a227e_enable_jack_detect(component, &ctx->jack);
}

static struct snd_soc_ops cht_aif1_ops = {
	.startup = cht_aif1_startup,
};

static struct snd_soc_ops cht_be_ssp2_ops = {
	.hw_params = cht_aif1_hw_params,
};

static struct snd_soc_aux_dev cht_max98090_headset_dev = {
	.name = "Headset Chip",
	.init = cht_max98090_headset_init,
	.codec_name = "i2c-104C227E:00",
};

static struct snd_soc_dai_link cht_dailink[] = {
	[MERR_DPCM_AUDIO] = {
		.name = "Audio Port",
		.stream_name = "Audio",
		.cpu_dai_name = "media-cpu-dai",
		.codec_dai_name = "snd-soc-dummy-dai",
		.codec_name = "snd-soc-dummy",
		.platform_name = "sst-mfld-platform",
		.nonatomic = true,
		.dynamic = 1,
		.dpcm_playback = 1,
		.dpcm_capture = 1,
		.ops = &cht_aif1_ops,
	},
	[MERR_DPCM_COMPR] = {
		.name = "Compressed Port",
		.stream_name = "Compress",
		.cpu_dai_name = "compress-cpu-dai",
		.codec_dai_name = "snd-soc-dummy-dai",
		.codec_name = "snd-soc-dummy",
		.platform_name = "sst-mfld-platform",
	},
	/* back ends */
	{
		.name = "SSP2-Codec",
		.be_id = 1,
		.cpu_dai_name = "ssp2-port",
		.platform_name = "sst-mfld-platform",
		.no_pcm = 1,
		.codec_dai_name = "HiFi",
		.codec_name = "i2c-193C9890:00",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
					| SND_SOC_DAIFMT_CBS_CFS,
		.init = cht_codec_init,
		.be_hw_params_fixup = cht_codec_fixup,
		.dpcm_playback = 1,
		.dpcm_capture = 1,
		.ops = &cht_be_ssp2_ops,
	},
};

/* SoC card */
static struct snd_soc_card snd_soc_card_cht = {
	.name = "chtmax98090",
	.dai_link = cht_dailink,
	.num_links = ARRAY_SIZE(cht_dailink),
	.aux_dev = &cht_max98090_headset_dev,
	.num_aux_devs = 1,
	.dapm_widgets = cht_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
	.dapm_routes = cht_audio_map,
	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
	.controls = cht_mc_controls,
	.num_controls = ARRAY_SIZE(cht_mc_controls),
};

static acpi_status snd_acpi_codec_match(acpi_handle handle, u32 level,
						void *context, void **ret)
{
	*(bool *)context = true;
	return AE_OK;
}

static int snd_cht_mc_probe(struct platform_device *pdev)
{
	int ret_val = 0;
	bool found = false;
	struct cht_mc_private *drv;

	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
	if (!drv)
		return -ENOMEM;

	if (ACPI_SUCCESS(acpi_get_devices(
					"104C227E",
					snd_acpi_codec_match,
					&found, NULL)) && found) {
		drv->ts3a227e_present = true;
	} else {
		/* no need probe TI jack detection chip */
		snd_soc_card_cht.aux_dev = NULL;
		snd_soc_card_cht.num_aux_devs = 0;
		drv->ts3a227e_present = false;
	}

	/* register the soc card */
	snd_soc_card_cht.dev = &pdev->dev;
	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
	if (ret_val) {
		dev_err(&pdev->dev,
			"snd_soc_register_card failed %d\n", ret_val);
		return ret_val;
	}
	platform_set_drvdata(pdev, &snd_soc_card_cht);
	return ret_val;
}

static struct platform_driver snd_cht_mc_driver = {
	.driver = {
		.name = "cht-bsw-max98090",
	},
	.probe = snd_cht_mc_probe,
};

module_platform_driver(snd_cht_mc_driver)

MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:cht-bsw-max98090");
Commit	Line	Data
17119a46 FY	1	/*
	2	* cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
	3	* platforms Cherrytrail and Braswell, with max98090 & TI codec.
	4	*
	5	* Copyright (C) 2015 Intel Corp
	6	* Author: Fang, Yang A <yang.a.fang@intel.com>
	7	* This file is modified from cht_bsw_rt5645.c
	8	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; version 2 of the License.
	13	*
	14	* This program is distributed in the hope that it will be useful, but
	15	* WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*
	19	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	20	*/
	21
	22	#include <linux/module.h>
	23	#include <linux/platform_device.h>
	24	#include <linux/slab.h>
	25	#include <linux/acpi.h>
	26	#include <sound/pcm.h>
	27	#include <sound/pcm_params.h>
	28	#include <sound/soc.h>
	29	#include <sound/jack.h>
	30	#include "../../codecs/max98090.h"
	31	#include "../atom/sst-atom-controls.h"
	32	#include "../../codecs/ts3a227e.h"
	33
	34	#define CHT_PLAT_CLK_3_HZ 19200000
	35	#define CHT_CODEC_DAI "HiFi"
	36
	37	struct cht_mc_private {
	38	struct snd_soc_jack jack;
	39	bool ts3a227e_present;
	40	};
	41
	42	static inline struct snd_soc_dai cht_get_codec_dai(struct snd_soc_card card)
	43	{
	44	int i;
	45
	46	for (i = 0; i < card->num_rtd; i++) {
	47	struct snd_soc_pcm_runtime *rtd;
	48
	49	rtd = card->rtd + i;
	50	if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
	51	strlen(CHT_CODEC_DAI)))
	52	return rtd->codec_dai;
	53	}
	54	return NULL;
	55	}
	56
	57	static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
	58	SND_SOC_DAPM_HP("Headphone", NULL),
	59	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	60	SND_SOC_DAPM_MIC("Int Mic", NULL),
	61	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	62	};
	63
	64	static const struct snd_soc_dapm_route cht_audio_map[] = {
65	{"IN34", NULL, "Headset Mic"},
66	{"Headset Mic", NULL, "MICBIAS"},
67	{"DMICL", NULL, "Int Mic"},
68	{"Headphone", NULL, "HPL"},
69	{"Headphone", NULL, "HPR"},
70	{"Ext Spk", NULL, "SPKL"},
71	{"Ext Spk", NULL, "SPKR"},
72	{"AIF1 Playback", NULL, "ssp2 Tx"},
73	{"ssp2 Tx", NULL, "codec_out0"},
74	{"ssp2 Tx", NULL, "codec_out1"},
75	{"codec_in0", NULL, "ssp2 Rx" },
76	{"codec_in1", NULL, "ssp2 Rx" },
77	{"ssp2 Rx", NULL, "AIF1 Capture"},
78	};
79
80	static const struct snd_kcontrol_new cht_mc_controls[] = {
81	SOC_DAPM_PIN_SWITCH("Headphone"),
82	SOC_DAPM_PIN_SWITCH("Headset Mic"),
83	SOC_DAPM_PIN_SWITCH("Int Mic"),
84	SOC_DAPM_PIN_SWITCH("Ext Spk"),
85	};
86
87	static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
88	struct snd_pcm_hw_params *params)
89	{
90	struct snd_soc_pcm_runtime *rtd = substream->private_data;
91	struct snd_soc_dai *codec_dai = rtd->codec_dai;
92	int ret;
93
94	ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
95	CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
96	if (ret < 0) {
97	dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
98	return ret;
99	}
100
101	return 0;
102	}
103
104	static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
105	{
106	int ret;
107	int jack_type;
108	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
109	struct snd_soc_jack *jack = &ctx->jack;
110
111	/**
112	* TI supports 4 butons headset detection
113	* KEY_MEDIA
114	* KEY_VOICECOMMAND
115	* KEY_VOLUMEUP
116	* KEY_VOLUMEDOWN
117	*/
118	if (ctx->ts3a227e_present)
119	jack_type = SND_JACK_HEADPHONE \| SND_JACK_MICROPHONE \|
120	SND_JACK_BTN_0 \| SND_JACK_BTN_1 \|
121	SND_JACK_BTN_2 \| SND_JACK_BTN_3;
122	else
123	jack_type = SND_JACK_HEADPHONE \| SND_JACK_MICROPHONE;
124
125	ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
126	jack_type, jack, NULL, 0);
127
128	if (ret) {
129	dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
130	return ret;
131	}
132
133	return ret;
134	}
135
136	static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
137	struct snd_pcm_hw_params *params)
138	{
139	struct snd_interval *rate = hw_param_interval(params,
140	SNDRV_PCM_HW_PARAM_RATE);
141	struct snd_interval *channels = hw_param_interval(params,
142	SNDRV_PCM_HW_PARAM_CHANNELS);
143	int ret = 0;
144	unsigned int fmt = 0;
145
146	ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
147	if (ret < 0) {
148	dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
149	return ret;
150	}
151
152	fmt = SND_SOC_DAIFMT_LEFT_J \| SND_SOC_DAIFMT_NB_NF
153	\| SND_SOC_DAIFMT_CBS_CFS;
154
155	ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
156	if (ret < 0) {
157	dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
158	return ret;
159	}
160
161	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
162	rate->min = rate->max = 48000;
163	channels->min = channels->max = 2;
164
165	/* set SSP2 to 24-bit */
26f63c69	166	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
17119a46 FY	167	return 0;
	168	}
	169
	170	static unsigned int rates_48000[] = {
	171	48000,
	172	};
	173
	174	static struct snd_pcm_hw_constraint_list constraints_48000 = {
	175	.count = ARRAY_SIZE(rates_48000),
	176	.list = rates_48000,
	177	};
	178
	179	static int cht_aif1_startup(struct snd_pcm_substream *substream)
	180	{
	181	return snd_pcm_hw_constraint_list(substream->runtime, 0,
	182	SNDRV_PCM_HW_PARAM_RATE,
	183	&constraints_48000);
	184	}
	185
	186	static int cht_max98090_headset_init(struct snd_soc_component *component)
	187	{
	188	struct snd_soc_card *card = component->card;
	189	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
	190
	191	return ts3a227e_enable_jack_detect(component, &ctx->jack);
	192	}
	193
	194	static struct snd_soc_ops cht_aif1_ops = {
	195	.startup = cht_aif1_startup,
	196	};
	197
	198	static struct snd_soc_ops cht_be_ssp2_ops = {
	199	.hw_params = cht_aif1_hw_params,
	200	};
	201
	202	static struct snd_soc_aux_dev cht_max98090_headset_dev = {
	203	.name = "Headset Chip",
	204	.init = cht_max98090_headset_init,
	205	.codec_name = "i2c-104C227E:00",
	206	};
	207
	208	static struct snd_soc_dai_link cht_dailink[] = {
	209	[MERR_DPCM_AUDIO] = {
	210	.name = "Audio Port",
	211	.stream_name = "Audio",
	212	.cpu_dai_name = "media-cpu-dai",
	213	.codec_dai_name = "snd-soc-dummy-dai",
	214	.codec_name = "snd-soc-dummy",
	215	.platform_name = "sst-mfld-platform",
	216	.nonatomic = true,
	217	.dynamic = 1,
	218	.dpcm_playback = 1,
	219	.dpcm_capture = 1,
	220	.ops = &cht_aif1_ops,
	221	},
	222	[MERR_DPCM_COMPR] = {
	223	.name = "Compressed Port",
	224	.stream_name = "Compress",
	225	.cpu_dai_name = "compress-cpu-dai",
	226	.codec_dai_name = "snd-soc-dummy-dai",
	227	.codec_name = "snd-soc-dummy",
	228	.platform_name = "sst-mfld-platform",
	229	},
	230	/* back ends */
231	{
232	.name = "SSP2-Codec",
233	.be_id = 1,
234	.cpu_dai_name = "ssp2-port",
235	.platform_name = "sst-mfld-platform",
236	.no_pcm = 1,
237	.codec_dai_name = "HiFi",
238	.codec_name = "i2c-193C9890:00",
239	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF
240	\| SND_SOC_DAIFMT_CBS_CFS,
241	.init = cht_codec_init,
242	.be_hw_params_fixup = cht_codec_fixup,
243	.dpcm_playback = 1,
244	.dpcm_capture = 1,
245	.ops = &cht_be_ssp2_ops,
246	},
247	};
248
249	/* SoC card */
250	static struct snd_soc_card snd_soc_card_cht = {
251	.name = "chtmax98090",
252	.dai_link = cht_dailink,
253	.num_links = ARRAY_SIZE(cht_dailink),
254	.aux_dev = &cht_max98090_headset_dev,
255	.num_aux_devs = 1,
256	.dapm_widgets = cht_dapm_widgets,
257	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
258	.dapm_routes = cht_audio_map,
259	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
260	.controls = cht_mc_controls,
261	.num_controls = ARRAY_SIZE(cht_mc_controls),
262	};
263
264	static acpi_status snd_acpi_codec_match(acpi_handle handle, u32 level,
265	void context, void *ret)
266	{
267	(bool )context = true;
268	return AE_OK;
269	}
270
271	static int snd_cht_mc_probe(struct platform_device *pdev)
272	{
273	int ret_val = 0;
274	bool found = false;
275	struct cht_mc_private *drv;
276
277	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
278	if (!drv)
279	return -ENOMEM;
280
281	if (ACPI_SUCCESS(acpi_get_devices(
282	"104C227E",
283	snd_acpi_codec_match,
284	&found, NULL)) && found) {
285	drv->ts3a227e_present = true;
286	} else {
287	/* no need probe TI jack detection chip */
288	snd_soc_card_cht.aux_dev = NULL;
289	snd_soc_card_cht.num_aux_devs = 0;
290	drv->ts3a227e_present = false;
291	}
292
293	/* register the soc card */
294	snd_soc_card_cht.dev = &pdev->dev;
295	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
296	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
297	if (ret_val) {
298	dev_err(&pdev->dev,
299	"snd_soc_register_card failed %d\n", ret_val);
300	return ret_val;
301	}
302	platform_set_drvdata(pdev, &snd_soc_card_cht);
303	return ret_val;
304	}
305
306	static struct platform_driver snd_cht_mc_driver = {
307	.driver = {
308	.name = "cht-bsw-max98090",
309	},
310	.probe = snd_cht_mc_probe,
311	};
312
313	module_platform_driver(snd_cht_mc_driver)
314
315	MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
316	MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
317	MODULE_LICENSE("GPL v2");
318	MODULE_ALIAS("platform:cht-bsw-max98090");