1 /*
2 * sdp4430.c -- SoC audio for TI OMAP4430 SDP
3 *
4 * Author: Misael Lopez Cruz <x0052729@ti.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22 #include <linux/clk.h>
23 #include <linux/platform_device.h>
24 #include <linux/mfd/twl6040.h>
25 #include <linux/module.h>
26
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/soc.h>
30 #include <sound/jack.h>
31
32 #include <asm/mach-types.h>
33 #include <plat/hardware.h>
34 #include <plat/mux.h>
35
36 #include "omap-dmic.h"
37 #include "omap-mcpdm.h"
38 #include "omap-pcm.h"
39 #include "../codecs/twl6040.h"
40
sdp4430_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)41 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
42 struct snd_pcm_hw_params *params)
43 {
44 struct snd_soc_pcm_runtime *rtd = substream->private_data;
45 struct snd_soc_dai *codec_dai = rtd->codec_dai;
46 int clk_id, freq;
47 int ret;
48
49 clk_id = twl6040_get_clk_id(rtd->codec);
50 if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
51 freq = 38400000;
52 else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
53 freq = 32768;
54 else
55 return -EINVAL;
56
57 /* set the codec mclk */
58 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
59 SND_SOC_CLOCK_IN);
60 if (ret) {
61 printk(KERN_ERR "can't set codec system clock\n");
62 return ret;
63 }
64 return ret;
65 }
66
67 static struct snd_soc_ops sdp4430_ops = {
68 .hw_params = sdp4430_hw_params,
69 };
70
sdp4430_dmic_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)71 static int sdp4430_dmic_hw_params(struct snd_pcm_substream *substream,
72 struct snd_pcm_hw_params *params)
73 {
74 struct snd_soc_pcm_runtime *rtd = substream->private_data;
75 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
76 int ret = 0;
77
78 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
79 19200000, SND_SOC_CLOCK_IN);
80 if (ret < 0) {
81 printk(KERN_ERR "can't set DMIC cpu system clock\n");
82 return ret;
83 }
84 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
85 SND_SOC_CLOCK_OUT);
86 if (ret < 0) {
87 printk(KERN_ERR "can't set DMIC output clock\n");
88 return ret;
89 }
90 return 0;
91 }
92
93 static struct snd_soc_ops sdp4430_dmic_ops = {
94 .hw_params = sdp4430_dmic_hw_params,
95 };
96
97 /* Headset jack */
98 static struct snd_soc_jack hs_jack;
99
100 /*Headset jack detection DAPM pins */
101 static struct snd_soc_jack_pin hs_jack_pins[] = {
102 {
103 .pin = "Headset Mic",
104 .mask = SND_JACK_MICROPHONE,
105 },
106 {
107 .pin = "Headset Stereophone",
108 .mask = SND_JACK_HEADPHONE,
109 },
110 };
111
112 /* SDP4430 machine DAPM */
113 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
114 SND_SOC_DAPM_MIC("Ext Mic", NULL),
115 SND_SOC_DAPM_SPK("Ext Spk", NULL),
116 SND_SOC_DAPM_MIC("Headset Mic", NULL),
117 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
118 SND_SOC_DAPM_SPK("Earphone Spk", NULL),
119 SND_SOC_DAPM_INPUT("FM Stereo In"),
120 };
121
122 static const struct snd_soc_dapm_route audio_map[] = {
123 /* External Mics: MAINMIC, SUBMIC with bias*/
124 {"MAINMIC", NULL, "Main Mic Bias"},
125 {"SUBMIC", NULL, "Main Mic Bias"},
126 {"Main Mic Bias", NULL, "Ext Mic"},
127
128 /* External Speakers: HFL, HFR */
129 {"Ext Spk", NULL, "HFL"},
130 {"Ext Spk", NULL, "HFR"},
131
132 /* Headset Mic: HSMIC with bias */
133 {"HSMIC", NULL, "Headset Mic Bias"},
134 {"Headset Mic Bias", NULL, "Headset Mic"},
135
136 /* Headset Stereophone (Headphone): HSOL, HSOR */
137 {"Headset Stereophone", NULL, "HSOL"},
138 {"Headset Stereophone", NULL, "HSOR"},
139
140 /* Earphone speaker */
141 {"Earphone Spk", NULL, "EP"},
142
143 /* Aux/FM Stereo In: AFML, AFMR */
144 {"AFML", NULL, "FM Stereo In"},
145 {"AFMR", NULL, "FM Stereo In"},
146 };
147
sdp4430_twl6040_init(struct snd_soc_pcm_runtime * rtd)148 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
149 {
150 struct snd_soc_codec *codec = rtd->codec;
151 int ret, hs_trim;
152
153 /*
154 * Configure McPDM offset cancellation based on the HSOTRIM value from
155 * twl6040.
156 */
157 hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
158 omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
159 TWL6040_HSF_TRIM_RIGHT(hs_trim));
160
161 /* Headset jack detection */
162 ret = snd_soc_jack_new(codec, "Headset Jack",
163 SND_JACK_HEADSET, &hs_jack);
164 if (ret)
165 return ret;
166
167 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
168 hs_jack_pins);
169
170 if (machine_is_omap_4430sdp())
171 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
172 else
173 snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
174
175 return ret;
176 }
177
178 static const struct snd_soc_dapm_widget sdp4430_dmic_dapm_widgets[] = {
179 SND_SOC_DAPM_MIC("Digital Mic", NULL),
180 };
181
182 static const struct snd_soc_dapm_route dmic_audio_map[] = {
183 {"DMic", NULL, "Digital Mic1 Bias"},
184 {"Digital Mic1 Bias", NULL, "Digital Mic"},
185 };
186
sdp4430_dmic_init(struct snd_soc_pcm_runtime * rtd)187 static int sdp4430_dmic_init(struct snd_soc_pcm_runtime *rtd)
188 {
189 struct snd_soc_codec *codec = rtd->codec;
190 struct snd_soc_dapm_context *dapm = &codec->dapm;
191 int ret;
192
193 ret = snd_soc_dapm_new_controls(dapm, sdp4430_dmic_dapm_widgets,
194 ARRAY_SIZE(sdp4430_dmic_dapm_widgets));
195 if (ret)
196 return ret;
197
198 return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
199 ARRAY_SIZE(dmic_audio_map));
200 }
201
202 /* Digital audio interface glue - connects codec <--> CPU */
203 static struct snd_soc_dai_link sdp4430_dai[] = {
204 {
205 .name = "TWL6040",
206 .stream_name = "TWL6040",
207 .cpu_dai_name = "omap-mcpdm",
208 .codec_dai_name = "twl6040-legacy",
209 .platform_name = "omap-pcm-audio",
210 .codec_name = "twl6040-codec",
211 .init = sdp4430_twl6040_init,
212 .ops = &sdp4430_ops,
213 },
214 {
215 .name = "DMIC",
216 .stream_name = "DMIC Capture",
217 .cpu_dai_name = "omap-dmic",
218 .codec_dai_name = "dmic-hifi",
219 .platform_name = "omap-pcm-audio",
220 .codec_name = "dmic-codec",
221 .init = sdp4430_dmic_init,
222 .ops = &sdp4430_dmic_ops,
223 },
224 };
225
226 /* Audio machine driver */
227 static struct snd_soc_card snd_soc_sdp4430 = {
228 .name = "SDP4430",
229 .owner = THIS_MODULE,
230 .dai_link = sdp4430_dai,
231 .num_links = ARRAY_SIZE(sdp4430_dai),
232
233 .dapm_widgets = sdp4430_twl6040_dapm_widgets,
234 .num_dapm_widgets = ARRAY_SIZE(sdp4430_twl6040_dapm_widgets),
235 .dapm_routes = audio_map,
236 .num_dapm_routes = ARRAY_SIZE(audio_map),
237 };
238
239 static struct platform_device *sdp4430_snd_device;
240
sdp4430_soc_init(void)241 static int __init sdp4430_soc_init(void)
242 {
243 int ret;
244
245 if (!machine_is_omap_4430sdp())
246 return -ENODEV;
247 printk(KERN_INFO "SDP4430 SoC init\n");
248
249 sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
250 if (!sdp4430_snd_device) {
251 printk(KERN_ERR "Platform device allocation failed\n");
252 return -ENOMEM;
253 }
254
255 platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
256
257 ret = platform_device_add(sdp4430_snd_device);
258 if (ret)
259 goto err;
260
261 return 0;
262
263 err:
264 printk(KERN_ERR "Unable to add platform device\n");
265 platform_device_put(sdp4430_snd_device);
266 return ret;
267 }
268 module_init(sdp4430_soc_init);
269
sdp4430_soc_exit(void)270 static void __exit sdp4430_soc_exit(void)
271 {
272 platform_device_unregister(sdp4430_snd_device);
273 }
274 module_exit(sdp4430_soc_exit);
275
276 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
277 MODULE_DESCRIPTION("ALSA SoC SDP4430");
278 MODULE_LICENSE("GPL");
279
280