1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * ASoC machine driver for Intel Broadwell platforms with RT5650 codec
  4 *
  5 * Copyright 2019, The Chromium OS Authors.  All rights reserved.
  6 */
  7
  8#include <linux/delay.h>
  9#include <linux/gpio/consumer.h>
 10#include <linux/module.h>
 11#include <linux/platform_device.h>
 12#include <sound/core.h>
 13#include <sound/jack.h>
 14#include <sound/pcm.h>
 15#include <sound/pcm_params.h>
 16#include <sound/soc.h>
 17#include <sound/soc-acpi.h>
 18
 19#include "../../codecs/rt5645.h"
 20
 21struct bdw_rt5650_priv {
 22	struct gpio_desc *gpio_hp_en;
 23	struct snd_soc_component *component;
 24};
 25
 26static const struct snd_soc_dapm_widget bdw_rt5650_widgets[] = {
 27	SND_SOC_DAPM_HP("Headphone", NULL),
 28	SND_SOC_DAPM_SPK("Speaker", NULL),
 29	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 30	SND_SOC_DAPM_MIC("DMIC Pair1", NULL),
 31	SND_SOC_DAPM_MIC("DMIC Pair2", NULL),
 32};
 33
 34static const struct snd_soc_dapm_route bdw_rt5650_map[] = {
 35	/* Speakers */
 36	{"Speaker", NULL, "SPOL"},
 37	{"Speaker", NULL, "SPOR"},
 38
 39	/* Headset jack connectors */
 40	{"Headphone", NULL, "HPOL"},
 41	{"Headphone", NULL, "HPOR"},
 42	{"IN1P", NULL, "Headset Mic"},
 43	{"IN1N", NULL, "Headset Mic"},
 44
 45	/* Digital MICs
 46	 * DMIC Pair1 are the two DMICs connected on the DMICN1 connector.
 47	 * DMIC Pair2 are the two DMICs connected on the DMICN2 connector.
 48	 * Facing the camera, DMIC Pair1 are on the left side, DMIC Pair2
 49	 * are on the right side.
 50	 */
 51	{"DMIC L1", NULL, "DMIC Pair1"},
 52	{"DMIC R1", NULL, "DMIC Pair1"},
 53	{"DMIC L2", NULL, "DMIC Pair2"},
 54	{"DMIC R2", NULL, "DMIC Pair2"},
 55
 56	/* CODEC BE connections */
 57	{"SSP0 CODEC IN", NULL, "AIF1 Capture"},
 58	{"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
 59};
 60
 61static const struct snd_kcontrol_new bdw_rt5650_controls[] = {
 62	SOC_DAPM_PIN_SWITCH("Speaker"),
 63	SOC_DAPM_PIN_SWITCH("Headphone"),
 64	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 65	SOC_DAPM_PIN_SWITCH("DMIC Pair1"),
 66	SOC_DAPM_PIN_SWITCH("DMIC Pair2"),
 67};
 68
 69
 70static struct snd_soc_jack headphone_jack;
 71static struct snd_soc_jack mic_jack;
 72
 73static struct snd_soc_jack_pin headphone_jack_pin = {
 74	.pin	= "Headphone",
 75	.mask	= SND_JACK_HEADPHONE,
 76};
 77
 78static struct snd_soc_jack_pin mic_jack_pin = {
 79	.pin	= "Headset Mic",
 80	.mask	= SND_JACK_MICROPHONE,
 81};
 82
 83static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
 84			struct snd_pcm_hw_params *params)
 85{
 86	struct snd_interval *rate = hw_param_interval(params,
 87						      SNDRV_PCM_HW_PARAM_RATE);
 88	struct snd_interval *chan = hw_param_interval(params,
 89						      SNDRV_PCM_HW_PARAM_CHANNELS);
 90
 91	/* The ADSP will convert the FE rate to 48k, max 4-channels */
 92	rate->min = rate->max = 48000;
 93	chan->min = 2;
 94	chan->max = 4;
 95
 96	/* set SSP0 to 24 bit */
 97	snd_mask_set_format(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
 98			    SNDRV_PCM_FORMAT_S24_LE);
 99
100	return 0;
101}
102
103static int bdw_rt5650_hw_params(struct snd_pcm_substream *substream,
104	struct snd_pcm_hw_params *params)
105{
106	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
107	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
108	int ret;
109
110	/* Workaround: set codec PLL to 19.2MHz that PLL source is
111	 * from MCLK(24MHz) to conform 2.4MHz DMIC clock.
112	 */
113	ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
114		24000000, 19200000);
115	if (ret < 0) {
116		dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
117		return ret;
118	}
119
120	/* The actual MCLK freq is 24MHz. The codec is told that MCLK is
121	 * 24.576MHz to satisfy the requirement of rl6231_get_clk_info.
122	 * ASRC is enabled on AD and DA filters to ensure good audio quality.
123	 */
124	ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1, 24576000,
125		SND_SOC_CLOCK_IN);
126	if (ret < 0) {
127		dev_err(rtd->dev, "can't set codec sysclk configuration\n");
128		return ret;
129	}
130
131	return ret;
132}
133
134static const struct snd_soc_ops bdw_rt5650_ops = {
135	.hw_params = bdw_rt5650_hw_params,
136};
137
138static const unsigned int channels[] = {
139	2, 4,
140};
141
142static const struct snd_pcm_hw_constraint_list constraints_channels = {
143	.count = ARRAY_SIZE(channels),
144	.list = channels,
145	.mask = 0,
146};
147
148static int bdw_rt5650_fe_startup(struct snd_pcm_substream *substream)
149{
150	struct snd_pcm_runtime *runtime = substream->runtime;
151
152	/* Board supports stereo and quad configurations for capture */
153	if (substream->stream != SNDRV_PCM_STREAM_CAPTURE)
154		return 0;
155
156	runtime->hw.channels_max = 4;
157	return snd_pcm_hw_constraint_list(runtime, 0,
158					  SNDRV_PCM_HW_PARAM_CHANNELS,
159					  &constraints_channels);
160}
161
162static const struct snd_soc_ops bdw_rt5650_fe_ops = {
163	.startup = bdw_rt5650_fe_startup,
164};
165
166static int bdw_rt5650_init(struct snd_soc_pcm_runtime *rtd)
167{
168	struct bdw_rt5650_priv *bdw_rt5650 =
169		snd_soc_card_get_drvdata(rtd->card);
170	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
171	struct snd_soc_component *component = codec_dai->component;
172	int ret;
173
174	/* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
175	 * The ASRC clock source is clk_i2s1_asrc.
176	 */
177	rt5645_sel_asrc_clk_src(component,
178				RT5645_DA_STEREO_FILTER |
179				RT5645_DA_MONO_L_FILTER |
180				RT5645_DA_MONO_R_FILTER |
181				RT5645_AD_STEREO_FILTER |
182				RT5645_AD_MONO_L_FILTER |
183				RT5645_AD_MONO_R_FILTER,
184				RT5645_CLK_SEL_I2S1_ASRC);
185
186	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
187	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
188
189	if (ret < 0) {
190		dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
191		return ret;
192	}
193
194	/* Create and initialize headphone jack */
195	if (snd_soc_card_jack_new_pins(rtd->card, "Headphone Jack",
196			SND_JACK_HEADPHONE, &headphone_jack,
197			&headphone_jack_pin, 1)) {
198		dev_err(component->dev, "Can't create headphone jack\n");
199	}
200
201	/* Create and initialize mic jack */
202	if (snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
203			SND_JACK_MICROPHONE, &mic_jack, &mic_jack_pin, 1)) {
204		dev_err(component->dev, "Can't create mic jack\n");
205	}
206
207	rt5645_set_jack_detect(component, &headphone_jack, &mic_jack, NULL);
208
209	bdw_rt5650->component = component;
210
211	return 0;
212}
213
214/* broadwell digital audio interface glue - connects codec <--> CPU */
215SND_SOC_DAILINK_DEF(dummy,
216	DAILINK_COMP_ARRAY(COMP_DUMMY()));
217
218SND_SOC_DAILINK_DEF(fe,
219	DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
220
221SND_SOC_DAILINK_DEF(platform,
222	DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
223
224SND_SOC_DAILINK_DEF(be,
225	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5650:00", "rt5645-aif1")));
226
227SND_SOC_DAILINK_DEF(ssp0_port,
228	    DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
229
230static struct snd_soc_dai_link bdw_rt5650_dais[] = {
231	/* Front End DAI links */
232	{
233		.name = "System PCM",
234		.stream_name = "System Playback",
235		.nonatomic = 1,
236		.dynamic = 1,
237		.ops = &bdw_rt5650_fe_ops,
238		.trigger = {
239			SND_SOC_DPCM_TRIGGER_POST,
240			SND_SOC_DPCM_TRIGGER_POST
241		},
242		SND_SOC_DAILINK_REG(fe, dummy, platform),
243	},
244
245	/* Back End DAI links */
246	{
247		/* SSP0 - Codec */
248		.name = "Codec",
249		.id = 0,
250		.nonatomic = 1,
251		.no_pcm = 1,
252		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
253			SND_SOC_DAIFMT_CBC_CFC,
254		.ignore_pmdown_time = 1,
255		.be_hw_params_fixup = broadwell_ssp0_fixup,
256		.ops = &bdw_rt5650_ops,
257		.init = bdw_rt5650_init,
258		SND_SOC_DAILINK_REG(ssp0_port, be, platform),
259	},
260};
261
262/* use space before codec name to simplify card ID, and simplify driver name */
263#define SOF_CARD_NAME "bdw rt5650" /* card name will be 'sof-bdw rt5650' */
264#define SOF_DRIVER_NAME "SOF"
265
266#define CARD_NAME "bdw-rt5650"
267#define DRIVER_NAME NULL /* card name will be used for driver name */
268
269/* ASoC machine driver for Broadwell DSP + RT5650 */
270static struct snd_soc_card bdw_rt5650_card = {
271	.name = CARD_NAME,
272	.driver_name = DRIVER_NAME,
273	.owner = THIS_MODULE,
274	.dai_link = bdw_rt5650_dais,
275	.num_links = ARRAY_SIZE(bdw_rt5650_dais),
276	.dapm_widgets = bdw_rt5650_widgets,
277	.num_dapm_widgets = ARRAY_SIZE(bdw_rt5650_widgets),
278	.dapm_routes = bdw_rt5650_map,
279	.num_dapm_routes = ARRAY_SIZE(bdw_rt5650_map),
280	.controls = bdw_rt5650_controls,
281	.num_controls = ARRAY_SIZE(bdw_rt5650_controls),
282	.fully_routed = true,
283};
284
285static int bdw_rt5650_probe(struct platform_device *pdev)
286{
287	struct bdw_rt5650_priv *bdw_rt5650;
288	struct snd_soc_acpi_mach *mach;
289	int ret;
290
291	bdw_rt5650_card.dev = &pdev->dev;
292
293	/* Allocate driver private struct */
294	bdw_rt5650 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5650_priv),
295		GFP_KERNEL);
296	if (!bdw_rt5650)
297		return -ENOMEM;
298
299	/* override platform name, if required */
300	mach = pdev->dev.platform_data;
301	ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt5650_card,
302						    mach->mach_params.platform);
303
304	if (ret)
305		return ret;
306
307	/* set card and driver name */
308	if (snd_soc_acpi_sof_parent(&pdev->dev)) {
309		bdw_rt5650_card.name = SOF_CARD_NAME;
310		bdw_rt5650_card.driver_name = SOF_DRIVER_NAME;
311	} else {
312		bdw_rt5650_card.name = CARD_NAME;
313		bdw_rt5650_card.driver_name = DRIVER_NAME;
314	}
315
316	snd_soc_card_set_drvdata(&bdw_rt5650_card, bdw_rt5650);
317
318	return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5650_card);
319}
320
321static struct platform_driver bdw_rt5650_audio = {
322	.probe = bdw_rt5650_probe,
323	.driver = {
324		.name = "bdw-rt5650",
325		.pm = &snd_soc_pm_ops,
326	},
327};
328
329module_platform_driver(bdw_rt5650_audio)
330
331/* Module information */
332MODULE_AUTHOR("Ben Zhang <benzh@chromium.org>");
333MODULE_DESCRIPTION("Intel Broadwell RT5650 machine driver");
334MODULE_LICENSE("GPL v2");
335MODULE_ALIAS("platform:bdw-rt5650");