1// SPDX-License-Identifier: GPL-2.0+
2//
3//  wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
4//
5//  Copyright (c) 2010 Wolfson Microelectronics plc
6//  Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7//
8//  Based on an earlier driver for the same hardware by Liam Girdwood.
9
10#include <linux/platform_device.h>
11#include <linux/clk.h>
12#include <linux/module.h>
13#include <sound/core.h>
14#include <sound/jack.h>
15#include <sound/pcm.h>
16#include <sound/pcm_params.h>
17#include <sound/soc.h>
18
19#include "imx-ssi.h"
20#include "../codecs/wm8350.h"
21#include "imx-audmux.h"
22
23/* There is a silicon mic on the board optionally connected via a solder pad
24 * SP1.  Define this to enable it.
25 */
26#undef USE_SIMIC
27
28struct _wm8350_audio {
29	unsigned int channels;
30	snd_pcm_format_t format;
31	unsigned int rate;
32	unsigned int sysclk;
33	unsigned int bclkdiv;
34	unsigned int clkdiv;
35	unsigned int lr_rate;
36};
37
38/* in order of power consumption per rate (lowest first) */
39static const struct _wm8350_audio wm8350_audio[] = {
40	/* 16bit mono modes */
41	{1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
42	 WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
43
44	/* 16 bit stereo modes */
45	{2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
46	 WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
47	{2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
48	 WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
49	{2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
50	 WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
51	{2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
52	 WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
53	{2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
54	 WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
55	{2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
56	 WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
57	{2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
58	 WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
59	{2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
60	 WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
61	{2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
62	 WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
63
64	/* 24bit stereo modes */
65	{2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
66	 WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
67	{2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
68	 WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
69	{2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
70	 WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
71	{2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
72	 WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
73};
74
75static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
76				struct snd_pcm_hw_params *params)
77{
78	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
79	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
80	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
81	int i, found = 0;
82	snd_pcm_format_t format = params_format(params);
83	unsigned int rate = params_rate(params);
84	unsigned int channels = params_channels(params);
85
86	/* find the correct audio parameters */
87	for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
88		if (rate == wm8350_audio[i].rate &&
89		    format == wm8350_audio[i].format &&
90		    channels == wm8350_audio[i].channels) {
91			found = 1;
92			break;
93		}
94	}
95	if (!found)
96		return -EINVAL;
97
98	/* codec FLL input is 14.75 MHz from MCLK */
99	snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
100
101	/* TODO: The SSI driver should figure this out for us */
102	switch (channels) {
103	case 2:
104		snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
105		break;
106	case 1:
107		snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0);
108		break;
109	default:
110		return -EINVAL;
111	}
112
113	/* set MCLK as the codec system clock for DAC and ADC */
114	snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
115			       wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
116
117	/* set codec BCLK division for sample rate */
118	snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
119			       wm8350_audio[i].bclkdiv);
120
121	/* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
122	snd_soc_dai_set_clkdiv(codec_dai,
123			       WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
124	snd_soc_dai_set_clkdiv(codec_dai,
125			       WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
126
127	/* now configure DAC and ADC clocks */
128	snd_soc_dai_set_clkdiv(codec_dai,
129			       WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
130
131	snd_soc_dai_set_clkdiv(codec_dai,
132			       WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
133
134	return 0;
135}
136
137static const struct snd_soc_ops wm1133_ev1_ops = {
138	.hw_params = wm1133_ev1_hw_params,
139};
140
141static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
142#ifdef USE_SIMIC
143	SND_SOC_DAPM_MIC("SiMIC", NULL),
144#endif
145	SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
146	SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
147	SND_SOC_DAPM_LINE("Line In Jack", NULL),
148	SND_SOC_DAPM_LINE("Line Out Jack", NULL),
149	SND_SOC_DAPM_HP("Headphone Jack", NULL),
150};
151
152/* imx32ads soc_card audio map */
153static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
154
155#ifdef USE_SIMIC
156	/* SiMIC --> IN1LN (with automatic bias) via SP1 */
157	{ "IN1LN", NULL, "Mic Bias" },
158	{ "Mic Bias", NULL, "SiMIC" },
159#endif
160
161	/* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
162	{ "IN1LN", NULL, "Mic Bias" },
163	{ "IN1LP", NULL, "Mic1 Jack" },
164	{ "Mic Bias", NULL, "Mic1 Jack" },
165
166	/* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
167	{ "IN1RN", NULL, "Mic Bias" },
168	{ "IN1RP", NULL, "Mic2 Jack" },
169	{ "Mic Bias", NULL, "Mic2 Jack" },
170
171	/* Line in Jack --> AUX (L+R) */
172	{ "IN3R", NULL, "Line In Jack" },
173	{ "IN3L", NULL, "Line In Jack" },
174
175	/* Out1 --> Headphone Jack */
176	{ "Headphone Jack", NULL, "OUT1R" },
177	{ "Headphone Jack", NULL, "OUT1L" },
178
179	/* Out1 --> Line Out Jack */
180	{ "Line Out Jack", NULL, "OUT2R" },
181	{ "Line Out Jack", NULL, "OUT2L" },
182};
183
184static struct snd_soc_jack hp_jack;
185
186static struct snd_soc_jack_pin hp_jack_pins[] = {
187	{ .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
188};
189
190static struct snd_soc_jack mic_jack;
191
192static struct snd_soc_jack_pin mic_jack_pins[] = {
193	{ .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
194	{ .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
195};
196
197static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
198{
199	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
200
201	/* Headphone jack detection */
202	snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE,
203			      &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
204	wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
205
206	/* Microphone jack detection */
207	snd_soc_card_jack_new(rtd->card, "Microphone",
208			      SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack,
209			      mic_jack_pins, ARRAY_SIZE(mic_jack_pins));
210	wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE,
211			       SND_JACK_BTN_0);
212
213	snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
214
215	return 0;
216}
217
218
219SND_SOC_DAILINK_DEFS(ev1,
220	DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")),
221	DAILINK_COMP_ARRAY(COMP_CODEC("wm8350-codec.0-0x1a", "wm8350-hifi")),
222	DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0")));
223
224static struct snd_soc_dai_link wm1133_ev1_dai = {
225	.name = "WM1133-EV1",
226	.stream_name = "Audio",
227	.init = wm1133_ev1_init,
228	.ops = &wm1133_ev1_ops,
229	.symmetric_rates = 1,
230	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
231		   SND_SOC_DAIFMT_CBM_CFM,
232	SND_SOC_DAILINK_REG(ev1),
233};
234
235static struct snd_soc_card wm1133_ev1 = {
236	.name = "WM1133-EV1",
237	.owner = THIS_MODULE,
238	.dai_link = &wm1133_ev1_dai,
239	.num_links = 1,
240
241	.dapm_widgets = wm1133_ev1_widgets,
242	.num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets),
243	.dapm_routes = wm1133_ev1_map,
244	.num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map),
245};
246
247static struct platform_device *wm1133_ev1_snd_device;
248
249static int __init wm1133_ev1_audio_init(void)
250{
251	int ret;
252	unsigned int ptcr, pdcr;
253
254	/* SSI0 mastered by port 5 */
255	ptcr = IMX_AUDMUX_V2_PTCR_SYN |
256		IMX_AUDMUX_V2_PTCR_TFSDIR |
257		IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
258		IMX_AUDMUX_V2_PTCR_TCLKDIR |
259		IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
260	pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
261	imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
262
263	ptcr = IMX_AUDMUX_V2_PTCR_SYN;
264	pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
265	imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
266
267	wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
268	if (!wm1133_ev1_snd_device)
269		return -ENOMEM;
270
271	platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
272	ret = platform_device_add(wm1133_ev1_snd_device);
273
274	if (ret)
275		platform_device_put(wm1133_ev1_snd_device);
276
277	return ret;
278}
279module_init(wm1133_ev1_audio_init);
280
281static void __exit wm1133_ev1_audio_exit(void)
282{
283	platform_device_unregister(wm1133_ev1_snd_device);
284}
285module_exit(wm1133_ev1_audio_exit);
286
287MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
288MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
289MODULE_LICENSE("GPL");
290