1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Sound card driver for Intel Haswell Lynx Point with Realtek 5640
  4 *
  5 * Copyright (C) 2013, Intel Corporation
  6 */
  7
  8#include <linux/module.h>
  9#include <linux/platform_device.h>
 10#include <sound/core.h>
 11#include <sound/pcm.h>
 12#include <sound/pcm_params.h>
 13#include <sound/soc.h>
 14#include <sound/soc-acpi.h>
 15#include "../../codecs/rt5640.h"
 16
 17static const struct snd_soc_dapm_widget card_widgets[] = {
 18	SND_SOC_DAPM_HP("Headphones", NULL),
 19	SND_SOC_DAPM_MIC("Mic", NULL),
 20};
 21
 22static const struct snd_soc_dapm_route card_routes[] = {
 23	{"Headphones", NULL, "HPOR"},
 24	{"Headphones", NULL, "HPOL"},
 25	{"IN2P", NULL, "Mic"},
 26
 27	/* CODEC BE connections */
 28	{"SSP0 CODEC IN", NULL, "AIF1 Capture"},
 29	{"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
 30};
 31
 32static int codec_link_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 33				      struct snd_pcm_hw_params *params)
 34{
 35	struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 36	struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 37
 38	/* The ADSP will convert the FE rate to 48k, stereo. */
 39	rate->min = rate->max = 48000;
 40	channels->min = channels->max = 2;
 41	/* Set SSP0 to 16 bit. */
 42	params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
 43
 44	return 0;
 45}
 46
 47static int codec_link_hw_params(struct snd_pcm_substream *substream,
 48				struct snd_pcm_hw_params *params)
 49{
 50	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 51	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 52	int ret;
 53
 54	ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, 12288000, SND_SOC_CLOCK_IN);
 55	if (ret < 0) {
 56		dev_err(rtd->dev, "set codec sysclk failed: %d\n", ret);
 57		return ret;
 58	}
 59
 60	/* Set correct codec filter for DAI format and clock config. */
 61	snd_soc_component_update_bits(codec_dai->component, 0x83, 0xffff, 0x8000);
 62
 63	return ret;
 64}
 65
 66static const struct snd_soc_ops codec_link_ops = {
 67	.hw_params = codec_link_hw_params,
 68};
 69
 70SND_SOC_DAILINK_DEF(system, DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
 71SND_SOC_DAILINK_DEF(offload0, DAILINK_COMP_ARRAY(COMP_CPU("Offload0 Pin")));
 72SND_SOC_DAILINK_DEF(offload1, DAILINK_COMP_ARRAY(COMP_CPU("Offload1 Pin")));
 73SND_SOC_DAILINK_DEF(loopback, DAILINK_COMP_ARRAY(COMP_CPU("Loopback Pin")));
 74
 75SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY()));
 76SND_SOC_DAILINK_DEF(codec, DAILINK_COMP_ARRAY(COMP_CODEC("i2c-INT33CA:00", "rt5640-aif1")));
 77SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
 78SND_SOC_DAILINK_DEF(ssp0_port, DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
 79
 80static struct snd_soc_dai_link card_dai_links[] = {
 81	/* Front End DAI links */
 82	{
 83		.name = "System",
 84		.stream_name = "System Playback/Capture",
 85		.nonatomic = 1,
 86		.dynamic = 1,
 87		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 88		SND_SOC_DAILINK_REG(system, dummy, platform),
 89	},
 90	{
 91		.name = "Offload0",
 92		.stream_name = "Offload0 Playback",
 93		.nonatomic = 1,
 94		.dynamic = 1,
 95		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 96		.playback_only = 1,
 97		SND_SOC_DAILINK_REG(offload0, dummy, platform),
 98	},
 99	{
100		.name = "Offload1",
101		.stream_name = "Offload1 Playback",
102		.nonatomic = 1,
103		.dynamic = 1,
104		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
105		.playback_only = 1,
106		SND_SOC_DAILINK_REG(offload1, dummy, platform),
107	},
108	{
109		.name = "Loopback",
110		.stream_name = "Loopback",
111		.nonatomic = 1,
112		.dynamic = 1,
113		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
114		.capture_only = 1,
115		SND_SOC_DAILINK_REG(loopback, dummy, platform),
116	},
117	/* Back End DAI links */
118	{
119		/* SSP0 - Codec */
120		.name = "Codec",
121		.id = 0,
122		.nonatomic = 1,
123		.no_pcm = 1,
124		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC,
125		.ignore_pmdown_time = 1,
126		.be_hw_params_fixup = codec_link_hw_params_fixup,
127		.ops = &codec_link_ops,
128		SND_SOC_DAILINK_REG(ssp0_port, codec, platform),
129	},
130};
131
132static struct snd_soc_card hsw_rt5640_card = {
133	.name = "haswell-rt5640",
134	.owner = THIS_MODULE,
135	.dai_link = card_dai_links,
136	.num_links = ARRAY_SIZE(card_dai_links),
137	.dapm_widgets = card_widgets,
138	.num_dapm_widgets = ARRAY_SIZE(card_widgets),
139	.dapm_routes = card_routes,
140	.num_dapm_routes = ARRAY_SIZE(card_routes),
141	.fully_routed = true,
142};
143
144static int hsw_rt5640_probe(struct platform_device *pdev)
145{
146	struct snd_soc_acpi_mach *mach;
147	struct device *dev = &pdev->dev;
148	int ret;
149
150	hsw_rt5640_card.dev = dev;
151	mach = dev_get_platdata(dev);
152
153	ret = snd_soc_fixup_dai_links_platform_name(&hsw_rt5640_card, mach->mach_params.platform);
154	if (ret)
155		return ret;
156
157	return devm_snd_soc_register_card(dev, &hsw_rt5640_card);
158}
159
160static struct platform_driver hsw_rt5640_driver = {
161	.probe = hsw_rt5640_probe,
162	.driver = {
163		.name = "hsw_rt5640",
164		.pm = &snd_soc_pm_ops,
165	},
166};
167
168module_platform_driver(hsw_rt5640_driver)
169
170MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
171MODULE_DESCRIPTION("Sound card driver for Intel Haswell Lynx Point with Realtek 5640");
172MODULE_LICENSE("GPL");
173MODULE_ALIAS("platform:hsw_rt5640");