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
28 struct _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) */
39 static 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
wm1133_ev1_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)75 static 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 = substream->private_data;
79 struct snd_soc_dai *codec_dai = rtd->codec_dai;
80 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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
137 static const struct snd_soc_ops wm1133_ev1_ops = {
138 .hw_params = wm1133_ev1_hw_params,
139 };
140
141 static 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 */
153 static 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
184 static struct snd_soc_jack hp_jack;
185
186 static struct snd_soc_jack_pin hp_jack_pins[] = {
187 { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
188 };
189
190 static struct snd_soc_jack mic_jack;
191
192 static 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
wm1133_ev1_init(struct snd_soc_pcm_runtime * rtd)197 static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
198 {
199 struct snd_soc_component *component = rtd->codec_dai->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
219 SND_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
224 static 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
235 static 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
247 static struct platform_device *wm1133_ev1_snd_device;
248
wm1133_ev1_audio_init(void)249 static 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 }
279 module_init(wm1133_ev1_audio_init);
280
wm1133_ev1_audio_exit(void)281 static void __exit wm1133_ev1_audio_exit(void)
282 {
283 platform_device_unregister(wm1133_ev1_snd_device);
284 }
285 module_exit(wm1133_ev1_audio_exit);
286
287 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
288 MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
289 MODULE_LICENSE("GPL");
290
