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(mask: 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(dai: codec_dai, pll_id: 0, source: RT5645_PLL1_S_MCLK,
114 freq_in: 24000000, freq_out: 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(dai: codec_dai, clk_id: RT5645_SCLK_S_PLL1, freq: 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, cond: 0,
158 SNDRV_PCM_HW_PARAM_CHANNELS,
159 l: &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(card: 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 filter_mask: 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(dai: codec_dai, tx_mask: 0xF, rx_mask: 0xF, slots: 4, slot_width: 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(card: rtd->card, id: "Headphone Jack",
196 type: SND_JACK_HEADPHONE, jack: &headphone_jack,
197 pins: &headphone_jack_pin, num_pins: 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(card: rtd->card, id: "Mic Jack",
203 type: SND_JACK_MICROPHONE, jack: &mic_jack, pins: &mic_jack_pin, num_pins: 1)) {
204 dev_err(component->dev, "Can't create mic jack\n");
205 }
206
207 rt5645_set_jack_detect(component, hp_jack: &headphone_jack, mic_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(dev: &pdev->dev, size: 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(card: &bdw_rt5650_card,
302 platform_name: 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(dev: &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(card: &bdw_rt5650_card, data: bdw_rt5650);
317
318 return devm_snd_soc_register_card(dev: &pdev->dev, card: &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");
336

source code of linux/sound/soc/intel/boards/bdw-rt5650.c