xref: /linux/sound/soc/intel/boards/bdw-rt5650.c (revision dd9a41bc61cc62d38306465ed62373b98df0049e)
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 "../common/sst-dsp.h"
20 #include "../haswell/sst-haswell-ipc.h"
21 
22 #include "../../codecs/rt5645.h"
23 
24 struct bdw_rt5650_priv {
25 	struct gpio_desc *gpio_hp_en;
26 	struct snd_soc_component *component;
27 };
28 
29 static const struct snd_soc_dapm_widget bdw_rt5650_widgets[] = {
30 	SND_SOC_DAPM_HP("Headphone", NULL),
31 	SND_SOC_DAPM_SPK("Speaker", NULL),
32 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
33 	SND_SOC_DAPM_MIC("DMIC Pair1", NULL),
34 	SND_SOC_DAPM_MIC("DMIC Pair2", NULL),
35 };
36 
37 static const struct snd_soc_dapm_route bdw_rt5650_map[] = {
38 	/* Speakers */
39 	{"Speaker", NULL, "SPOL"},
40 	{"Speaker", NULL, "SPOR"},
41 
42 	/* Headset jack connectors */
43 	{"Headphone", NULL, "HPOL"},
44 	{"Headphone", NULL, "HPOR"},
45 	{"IN1P", NULL, "Headset Mic"},
46 	{"IN1N", NULL, "Headset Mic"},
47 
48 	/* Digital MICs
49 	 * DMIC Pair1 are the two DMICs connected on the DMICN1 connector.
50 	 * DMIC Pair2 are the two DMICs connected on the DMICN2 connector.
51 	 * Facing the camera, DMIC Pair1 are on the left side, DMIC Pair2
52 	 * are on the right side.
53 	 */
54 	{"DMIC L1", NULL, "DMIC Pair1"},
55 	{"DMIC R1", NULL, "DMIC Pair1"},
56 	{"DMIC L2", NULL, "DMIC Pair2"},
57 	{"DMIC R2", NULL, "DMIC Pair2"},
58 
59 	/* CODEC BE connections */
60 	{"SSP0 CODEC IN", NULL, "AIF1 Capture"},
61 	{"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
62 };
63 
64 static const struct snd_kcontrol_new bdw_rt5650_controls[] = {
65 	SOC_DAPM_PIN_SWITCH("Speaker"),
66 	SOC_DAPM_PIN_SWITCH("Headphone"),
67 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
68 	SOC_DAPM_PIN_SWITCH("DMIC Pair1"),
69 	SOC_DAPM_PIN_SWITCH("DMIC Pair2"),
70 };
71 
72 
73 static struct snd_soc_jack headphone_jack;
74 static struct snd_soc_jack mic_jack;
75 
76 static struct snd_soc_jack_pin headphone_jack_pin = {
77 	.pin	= "Headphone",
78 	.mask	= SND_JACK_HEADPHONE,
79 };
80 
81 static struct snd_soc_jack_pin mic_jack_pin = {
82 	.pin	= "Headset Mic",
83 	.mask	= SND_JACK_MICROPHONE,
84 };
85 
86 static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
87 			struct snd_pcm_hw_params *params)
88 {
89 	struct snd_interval *rate = hw_param_interval(params,
90 			SNDRV_PCM_HW_PARAM_RATE);
91 	struct snd_interval *channels = hw_param_interval(params,
92 						SNDRV_PCM_HW_PARAM_CHANNELS);
93 
94 	/* The ADSP will covert the FE rate to 48k, max 4-channels */
95 	rate->min = rate->max = 48000;
96 	channels->min = 2;
97 	channels->max = 4;
98 
99 	/* set SSP0 to 24 bit */
100 	snd_mask_set_format(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
101 			    SNDRV_PCM_FORMAT_S24_LE);
102 
103 	return 0;
104 }
105 
106 static int bdw_rt5650_hw_params(struct snd_pcm_substream *substream,
107 	struct snd_pcm_hw_params *params)
108 {
109 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
110 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
111 	int ret;
112 
113 	/* Workaround: set codec PLL to 19.2MHz that PLL source is
114 	 * from MCLK(24MHz) to conform 2.4MHz DMIC clock.
115 	 */
116 	ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
117 		24000000, 19200000);
118 	if (ret < 0) {
119 		dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
120 		return ret;
121 	}
122 
123 	/* The actual MCLK freq is 24MHz. The codec is told that MCLK is
124 	 * 24.576MHz to satisfy the requirement of rl6231_get_clk_info.
125 	 * ASRC is enabled on AD and DA filters to ensure good audio quality.
126 	 */
127 	ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1, 24576000,
128 		SND_SOC_CLOCK_IN);
129 	if (ret < 0) {
130 		dev_err(rtd->dev, "can't set codec sysclk configuration\n");
131 		return ret;
132 	}
133 
134 	return ret;
135 }
136 
137 static struct snd_soc_ops bdw_rt5650_ops = {
138 	.hw_params = bdw_rt5650_hw_params,
139 };
140 
141 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
142 static int bdw_rt5650_rtd_init(struct snd_soc_pcm_runtime *rtd)
143 {
144 	struct snd_soc_component *component =
145 		snd_soc_rtdcom_lookup(rtd, DRV_NAME);
146 	struct sst_pdata *pdata = dev_get_platdata(component->dev);
147 	struct sst_hsw *broadwell = pdata->dsp;
148 	int ret;
149 
150 	/* Set ADSP SSP port settings
151 	 * clock_divider = 4 means BCLK = MCLK/5 = 24MHz/5 = 4.8MHz
152 	 */
153 	ret = sst_hsw_device_set_config(broadwell, SST_HSW_DEVICE_SSP_0,
154 		SST_HSW_DEVICE_MCLK_FREQ_24_MHZ,
155 		SST_HSW_DEVICE_TDM_CLOCK_MASTER, 4);
156 	if (ret < 0) {
157 		dev_err(rtd->dev, "error: failed to set device config\n");
158 		return ret;
159 	}
160 
161 	return 0;
162 }
163 #endif
164 
165 static int bdw_rt5650_init(struct snd_soc_pcm_runtime *rtd)
166 {
167 	struct bdw_rt5650_priv *bdw_rt5650 =
168 		snd_soc_card_get_drvdata(rtd->card);
169 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
170 	struct snd_soc_component *component = codec_dai->component;
171 	int ret;
172 
173 	/* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
174 	 * The ASRC clock source is clk_i2s1_asrc.
175 	 */
176 	rt5645_sel_asrc_clk_src(component,
177 				RT5645_DA_STEREO_FILTER |
178 				RT5645_DA_MONO_L_FILTER |
179 				RT5645_DA_MONO_R_FILTER |
180 				RT5645_AD_STEREO_FILTER |
181 				RT5645_AD_MONO_L_FILTER |
182 				RT5645_AD_MONO_R_FILTER,
183 				RT5645_CLK_SEL_I2S1_ASRC);
184 
185 	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
186 	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
187 
188 	if (ret < 0) {
189 		dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
190 		return ret;
191 	}
192 
193 	/* Create and initialize headphone jack */
194 	if (snd_soc_card_jack_new(rtd->card, "Headphone Jack",
195 			SND_JACK_HEADPHONE, &headphone_jack,
196 			&headphone_jack_pin, 1)) {
197 		dev_err(component->dev, "Can't create headphone jack\n");
198 	}
199 
200 	/* Create and initialize mic jack */
201 	if (snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
202 			&mic_jack, &mic_jack_pin, 1)) {
203 		dev_err(component->dev, "Can't create mic jack\n");
204 	}
205 
206 	rt5645_set_jack_detect(component, &headphone_jack, &mic_jack, NULL);
207 
208 	bdw_rt5650->component = component;
209 
210 	return 0;
211 }
212 
213 /* broadwell digital audio interface glue - connects codec <--> CPU */
214 SND_SOC_DAILINK_DEF(dummy,
215 	DAILINK_COMP_ARRAY(COMP_DUMMY()));
216 
217 SND_SOC_DAILINK_DEF(fe,
218 	DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
219 
220 SND_SOC_DAILINK_DEF(platform,
221 	DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
222 
223 SND_SOC_DAILINK_DEF(be,
224 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5650:00", "rt5645-aif1")));
225 
226 #if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
227 SND_SOC_DAILINK_DEF(ssp0_port,
228 	    DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
229 #endif
230 
231 static struct snd_soc_dai_link bdw_rt5650_dais[] = {
232 	/* Front End DAI links */
233 	{
234 		.name = "System PCM",
235 		.stream_name = "System Playback",
236 		.dynamic = 1,
237 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
238 		.init = bdw_rt5650_rtd_init,
239 #endif
240 		.trigger = {
241 			SND_SOC_DPCM_TRIGGER_POST,
242 			SND_SOC_DPCM_TRIGGER_POST
243 		},
244 		.dpcm_playback = 1,
245 		.dpcm_capture = 1,
246 		SND_SOC_DAILINK_REG(fe, dummy, platform),
247 	},
248 
249 	/* Back End DAI links */
250 	{
251 		/* SSP0 - Codec */
252 		.name = "Codec",
253 		.id = 0,
254 		.no_pcm = 1,
255 		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
256 			SND_SOC_DAIFMT_CBS_CFS,
257 		.ignore_pmdown_time = 1,
258 		.be_hw_params_fixup = broadwell_ssp0_fixup,
259 		.ops = &bdw_rt5650_ops,
260 		.dpcm_playback = 1,
261 		.dpcm_capture = 1,
262 		.init = bdw_rt5650_init,
263 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
264 		SND_SOC_DAILINK_REG(dummy, be, dummy),
265 #else
266 		SND_SOC_DAILINK_REG(ssp0_port, be, platform),
267 #endif
268 	},
269 };
270 
271 /* ASoC machine driver for Broadwell DSP + RT5650 */
272 static struct snd_soc_card bdw_rt5650_card = {
273 	.name = "bdw-rt5650",
274 	.owner = THIS_MODULE,
275 	.dai_link = bdw_rt5650_dais,
276 	.num_links = ARRAY_SIZE(bdw_rt5650_dais),
277 	.dapm_widgets = bdw_rt5650_widgets,
278 	.num_dapm_widgets = ARRAY_SIZE(bdw_rt5650_widgets),
279 	.dapm_routes = bdw_rt5650_map,
280 	.num_dapm_routes = ARRAY_SIZE(bdw_rt5650_map),
281 	.controls = bdw_rt5650_controls,
282 	.num_controls = ARRAY_SIZE(bdw_rt5650_controls),
283 	.fully_routed = true,
284 };
285 
286 static int bdw_rt5650_probe(struct platform_device *pdev)
287 {
288 	struct bdw_rt5650_priv *bdw_rt5650;
289 	struct snd_soc_acpi_mach *mach;
290 	int ret;
291 
292 	bdw_rt5650_card.dev = &pdev->dev;
293 
294 	/* Allocate driver private struct */
295 	bdw_rt5650 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5650_priv),
296 		GFP_KERNEL);
297 	if (!bdw_rt5650)
298 		return -ENOMEM;
299 
300 	/* override plaform name, if required */
301 	mach = pdev->dev.platform_data;
302 	ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt5650_card,
303 						    mach->mach_params.platform);
304 
305 	if (ret)
306 		return ret;
307 
308 	snd_soc_card_set_drvdata(&bdw_rt5650_card, bdw_rt5650);
309 
310 	return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5650_card);
311 }
312 
313 static struct platform_driver bdw_rt5650_audio = {
314 	.probe = bdw_rt5650_probe,
315 	.driver = {
316 		.name = "bdw-rt5650",
317 		.pm = &snd_soc_pm_ops,
318 	},
319 };
320 
321 module_platform_driver(bdw_rt5650_audio)
322 
323 /* Module information */
324 MODULE_AUTHOR("Ben Zhang <benzh@chromium.org>");
325 MODULE_DESCRIPTION("Intel Broadwell RT5650 machine driver");
326 MODULE_LICENSE("GPL v2");
327 MODULE_ALIAS("platform:bdw-rt5650");
328