1 /*
2 * n810.c -- SoC audio for Nokia N810
3 *
4 * Copyright (C) 2008 Nokia Corporation
5 *
6 * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include <linux/clk.h>
25 #include <linux/i2c.h>
26 #include <linux/platform_device.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/soc.h>
30
31 #include <asm/mach-types.h>
32 #include <linux/gpio.h>
33 #include <linux/module.h>
34 #include <linux/platform_data/asoc-ti-mcbsp.h>
35
36 #include "omap-mcbsp.h"
37
38 #define N810_HEADSET_AMP_GPIO 10
39 #define N810_SPEAKER_AMP_GPIO 101
40
41 enum {
42 N810_JACK_DISABLED,
43 N810_JACK_HP,
44 N810_JACK_HS,
45 N810_JACK_MIC,
46 };
47
48 static struct clk *sys_clkout2;
49 static struct clk *sys_clkout2_src;
50 static struct clk *func96m_clk;
51
52 static int n810_spk_func;
53 static int n810_jack_func;
54 static int n810_dmic_func;
55
n810_ext_control(struct snd_soc_dapm_context * dapm)56 static void n810_ext_control(struct snd_soc_dapm_context *dapm)
57 {
58 int hp = 0, line1l = 0;
59
60 switch (n810_jack_func) {
61 case N810_JACK_HS:
62 line1l = 1;
63 case N810_JACK_HP:
64 hp = 1;
65 break;
66 case N810_JACK_MIC:
67 line1l = 1;
68 break;
69 }
70
71 snd_soc_dapm_mutex_lock(dapm);
72
73 if (n810_spk_func)
74 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
75 else
76 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
77
78 if (hp)
79 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
80 else
81 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
82 if (line1l)
83 snd_soc_dapm_enable_pin_unlocked(dapm, "LINE1L");
84 else
85 snd_soc_dapm_disable_pin_unlocked(dapm, "LINE1L");
86
87 if (n810_dmic_func)
88 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
89 else
90 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
91
92 snd_soc_dapm_sync_unlocked(dapm);
93
94 snd_soc_dapm_mutex_unlock(dapm);
95 }
96
n810_startup(struct snd_pcm_substream * substream)97 static int n810_startup(struct snd_pcm_substream *substream)
98 {
99 struct snd_pcm_runtime *runtime = substream->runtime;
100 struct snd_soc_pcm_runtime *rtd = substream->private_data;
101
102 snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
103
104 n810_ext_control(&rtd->card->dapm);
105 return clk_prepare_enable(sys_clkout2);
106 }
107
n810_shutdown(struct snd_pcm_substream * substream)108 static void n810_shutdown(struct snd_pcm_substream *substream)
109 {
110 clk_disable_unprepare(sys_clkout2);
111 }
112
n810_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)113 static int n810_hw_params(struct snd_pcm_substream *substream,
114 struct snd_pcm_hw_params *params)
115 {
116 struct snd_soc_pcm_runtime *rtd = substream->private_data;
117 struct snd_soc_dai *codec_dai = rtd->codec_dai;
118 int err;
119
120 /* Set the codec system clock for DAC and ADC */
121 err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
122 SND_SOC_CLOCK_IN);
123
124 return err;
125 }
126
127 static const struct snd_soc_ops n810_ops = {
128 .startup = n810_startup,
129 .hw_params = n810_hw_params,
130 .shutdown = n810_shutdown,
131 };
132
n810_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)133 static int n810_get_spk(struct snd_kcontrol *kcontrol,
134 struct snd_ctl_elem_value *ucontrol)
135 {
136 ucontrol->value.enumerated.item[0] = n810_spk_func;
137
138 return 0;
139 }
140
n810_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)141 static int n810_set_spk(struct snd_kcontrol *kcontrol,
142 struct snd_ctl_elem_value *ucontrol)
143 {
144 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
145
146 if (n810_spk_func == ucontrol->value.enumerated.item[0])
147 return 0;
148
149 n810_spk_func = ucontrol->value.enumerated.item[0];
150 n810_ext_control(&card->dapm);
151
152 return 1;
153 }
154
n810_get_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)155 static int n810_get_jack(struct snd_kcontrol *kcontrol,
156 struct snd_ctl_elem_value *ucontrol)
157 {
158 ucontrol->value.enumerated.item[0] = n810_jack_func;
159
160 return 0;
161 }
162
n810_set_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)163 static int n810_set_jack(struct snd_kcontrol *kcontrol,
164 struct snd_ctl_elem_value *ucontrol)
165 {
166 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
167
168 if (n810_jack_func == ucontrol->value.enumerated.item[0])
169 return 0;
170
171 n810_jack_func = ucontrol->value.enumerated.item[0];
172 n810_ext_control(&card->dapm);
173
174 return 1;
175 }
176
n810_get_input(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)177 static int n810_get_input(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_value *ucontrol)
179 {
180 ucontrol->value.enumerated.item[0] = n810_dmic_func;
181
182 return 0;
183 }
184
n810_set_input(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)185 static int n810_set_input(struct snd_kcontrol *kcontrol,
186 struct snd_ctl_elem_value *ucontrol)
187 {
188 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
189
190 if (n810_dmic_func == ucontrol->value.enumerated.item[0])
191 return 0;
192
193 n810_dmic_func = ucontrol->value.enumerated.item[0];
194 n810_ext_control(&card->dapm);
195
196 return 1;
197 }
198
n810_spk_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)199 static int n810_spk_event(struct snd_soc_dapm_widget *w,
200 struct snd_kcontrol *k, int event)
201 {
202 if (SND_SOC_DAPM_EVENT_ON(event))
203 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
204 else
205 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
206
207 return 0;
208 }
209
n810_jack_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)210 static int n810_jack_event(struct snd_soc_dapm_widget *w,
211 struct snd_kcontrol *k, int event)
212 {
213 if (SND_SOC_DAPM_EVENT_ON(event))
214 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
215 else
216 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
217
218 return 0;
219 }
220
221 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
222 SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
223 SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
224 SND_SOC_DAPM_MIC("DMic", NULL),
225 };
226
227 static const struct snd_soc_dapm_route audio_map[] = {
228 {"Headphone Jack", NULL, "HPLOUT"},
229 {"Headphone Jack", NULL, "HPROUT"},
230
231 {"Ext Spk", NULL, "LLOUT"},
232 {"Ext Spk", NULL, "RLOUT"},
233
234 {"DMic Rate 64", NULL, "Mic Bias"},
235 {"Mic Bias", NULL, "DMic"},
236 };
237
238 static const char *spk_function[] = {"Off", "On"};
239 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
240 static const char *input_function[] = {"ADC", "Digital Mic"};
241 static const struct soc_enum n810_enum[] = {
242 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
243 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
244 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
245 };
246
247 static const struct snd_kcontrol_new aic33_n810_controls[] = {
248 SOC_ENUM_EXT("Speaker Function", n810_enum[0],
249 n810_get_spk, n810_set_spk),
250 SOC_ENUM_EXT("Jack Function", n810_enum[1],
251 n810_get_jack, n810_set_jack),
252 SOC_ENUM_EXT("Input Select", n810_enum[2],
253 n810_get_input, n810_set_input),
254 };
255
256 /* Digital audio interface glue - connects codec <--> CPU */
257 static struct snd_soc_dai_link n810_dai = {
258 .name = "TLV320AIC33",
259 .stream_name = "AIC33",
260 .cpu_dai_name = "omap-mcbsp.2",
261 .platform_name = "omap-mcbsp.2",
262 .codec_name = "tlv320aic3x-codec.2-0018",
263 .codec_dai_name = "tlv320aic3x-hifi",
264 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
265 SND_SOC_DAIFMT_CBM_CFM,
266 .ops = &n810_ops,
267 };
268
269 /* Audio machine driver */
270 static struct snd_soc_card snd_soc_n810 = {
271 .name = "N810",
272 .owner = THIS_MODULE,
273 .dai_link = &n810_dai,
274 .num_links = 1,
275
276 .controls = aic33_n810_controls,
277 .num_controls = ARRAY_SIZE(aic33_n810_controls),
278 .dapm_widgets = aic33_dapm_widgets,
279 .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
280 .dapm_routes = audio_map,
281 .num_dapm_routes = ARRAY_SIZE(audio_map),
282 .fully_routed = true,
283 };
284
285 static struct platform_device *n810_snd_device;
286
n810_soc_init(void)287 static int __init n810_soc_init(void)
288 {
289 int err;
290 struct device *dev;
291
292 if (!of_have_populated_dt() ||
293 (!of_machine_is_compatible("nokia,n810") &&
294 !of_machine_is_compatible("nokia,n810-wimax")))
295 return -ENODEV;
296
297 n810_snd_device = platform_device_alloc("soc-audio", -1);
298 if (!n810_snd_device)
299 return -ENOMEM;
300
301 platform_set_drvdata(n810_snd_device, &snd_soc_n810);
302 err = platform_device_add(n810_snd_device);
303 if (err)
304 goto err1;
305
306 dev = &n810_snd_device->dev;
307
308 sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
309 if (IS_ERR(sys_clkout2_src)) {
310 dev_err(dev, "Could not get sys_clkout2_src clock\n");
311 err = PTR_ERR(sys_clkout2_src);
312 goto err2;
313 }
314 sys_clkout2 = clk_get(dev, "sys_clkout2");
315 if (IS_ERR(sys_clkout2)) {
316 dev_err(dev, "Could not get sys_clkout2\n");
317 err = PTR_ERR(sys_clkout2);
318 goto err3;
319 }
320 /*
321 * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
322 * 96 MHz as its parent in order to get 12 MHz
323 */
324 func96m_clk = clk_get(dev, "func_96m_ck");
325 if (IS_ERR(func96m_clk)) {
326 dev_err(dev, "Could not get func 96M clock\n");
327 err = PTR_ERR(func96m_clk);
328 goto err4;
329 }
330 clk_set_parent(sys_clkout2_src, func96m_clk);
331 clk_set_rate(sys_clkout2, 12000000);
332
333 if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
334 (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
335 err = -EINVAL;
336 goto err4;
337 }
338
339 gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
340 gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
341
342 return 0;
343 err4:
344 clk_put(sys_clkout2);
345 err3:
346 clk_put(sys_clkout2_src);
347 err2:
348 platform_device_del(n810_snd_device);
349 err1:
350 platform_device_put(n810_snd_device);
351
352 return err;
353 }
354
n810_soc_exit(void)355 static void __exit n810_soc_exit(void)
356 {
357 gpio_free(N810_SPEAKER_AMP_GPIO);
358 gpio_free(N810_HEADSET_AMP_GPIO);
359 clk_put(sys_clkout2_src);
360 clk_put(sys_clkout2);
361 clk_put(func96m_clk);
362
363 platform_device_unregister(n810_snd_device);
364 }
365
366 module_init(n810_soc_init);
367 module_exit(n810_soc_exit);
368
369 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
370 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
371 MODULE_LICENSE("GPL");
372