2 * n810.c -- SoC audio for Nokia N810
4 * Copyright (C) 2008 Nokia Corporation
6 * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
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.
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.
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
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>
31 #include <asm/mach-types.h>
32 #include <mach/hardware.h>
33 #include <linux/gpio.h>
34 #include <plat/mcbsp.h>
36 #include "omap-mcbsp.h"
39 #define N810_HEADSET_AMP_GPIO 10
40 #define N810_SPEAKER_AMP_GPIO 101
49 static struct clk *sys_clkout2;
50 static struct clk *sys_clkout2_src;
51 static struct clk *func96m_clk;
53 static int n810_spk_func;
54 static int n810_jack_func;
55 static int n810_dmic_func;
57 static void n810_ext_control(struct snd_soc_codec *codec)
59 struct snd_soc_dapm_context *dapm = &codec->dapm;
60 int hp = 0, line1l = 0;
62 switch (n810_jack_func) {
74 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
76 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
79 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
81 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
83 snd_soc_dapm_enable_pin(dapm, "LINE1L");
85 snd_soc_dapm_disable_pin(dapm, "LINE1L");
88 snd_soc_dapm_enable_pin(dapm, "DMic");
90 snd_soc_dapm_disable_pin(dapm, "DMic");
92 snd_soc_dapm_sync(dapm);
95 static int n810_startup(struct snd_pcm_substream *substream)
97 struct snd_pcm_runtime *runtime = substream->runtime;
98 struct snd_soc_pcm_runtime *rtd = substream->private_data;
99 struct snd_soc_codec *codec = rtd->codec;
101 snd_pcm_hw_constraint_minmax(runtime,
102 SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
104 n810_ext_control(codec);
105 return clk_enable(sys_clkout2);
108 static void n810_shutdown(struct snd_pcm_substream *substream)
110 clk_disable(sys_clkout2);
113 static int n810_hw_params(struct snd_pcm_substream *substream,
114 struct snd_pcm_hw_params *params)
116 struct snd_soc_pcm_runtime *rtd = substream->private_data;
117 struct snd_soc_dai *codec_dai = rtd->codec_dai;
120 /* Set the codec system clock for DAC and ADC */
121 err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
127 static struct snd_soc_ops n810_ops = {
128 .startup = n810_startup,
129 .hw_params = n810_hw_params,
130 .shutdown = n810_shutdown,
133 static int n810_get_spk(struct snd_kcontrol *kcontrol,
134 struct snd_ctl_elem_value *ucontrol)
136 ucontrol->value.integer.value[0] = n810_spk_func;
141 static int n810_set_spk(struct snd_kcontrol *kcontrol,
142 struct snd_ctl_elem_value *ucontrol)
144 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
146 if (n810_spk_func == ucontrol->value.integer.value[0])
149 n810_spk_func = ucontrol->value.integer.value[0];
150 n810_ext_control(codec);
155 static int n810_get_jack(struct snd_kcontrol *kcontrol,
156 struct snd_ctl_elem_value *ucontrol)
158 ucontrol->value.integer.value[0] = n810_jack_func;
163 static int n810_set_jack(struct snd_kcontrol *kcontrol,
164 struct snd_ctl_elem_value *ucontrol)
166 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
168 if (n810_jack_func == ucontrol->value.integer.value[0])
171 n810_jack_func = ucontrol->value.integer.value[0];
172 n810_ext_control(codec);
177 static int n810_get_input(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_value *ucontrol)
180 ucontrol->value.integer.value[0] = n810_dmic_func;
185 static int n810_set_input(struct snd_kcontrol *kcontrol,
186 struct snd_ctl_elem_value *ucontrol)
188 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
190 if (n810_dmic_func == ucontrol->value.integer.value[0])
193 n810_dmic_func = ucontrol->value.integer.value[0];
194 n810_ext_control(codec);
199 static int n810_spk_event(struct snd_soc_dapm_widget *w,
200 struct snd_kcontrol *k, int event)
202 if (SND_SOC_DAPM_EVENT_ON(event))
203 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
205 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
210 static int n810_jack_event(struct snd_soc_dapm_widget *w,
211 struct snd_kcontrol *k, int event)
213 if (SND_SOC_DAPM_EVENT_ON(event))
214 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
216 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
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),
227 static const struct snd_soc_dapm_route audio_map[] = {
228 {"Headphone Jack", NULL, "HPLOUT"},
229 {"Headphone Jack", NULL, "HPROUT"},
231 {"Ext Spk", NULL, "LLOUT"},
232 {"Ext Spk", NULL, "RLOUT"},
234 {"DMic Rate 64", NULL, "Mic Bias 2V"},
235 {"Mic Bias 2V", NULL, "DMic"},
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),
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),
256 static int n810_aic33_init(struct snd_soc_pcm_runtime *rtd)
258 struct snd_soc_codec *codec = rtd->codec;
259 struct snd_soc_dapm_context *dapm = &codec->dapm;
263 snd_soc_dapm_nc_pin(dapm, "MONO_LOUT");
264 snd_soc_dapm_nc_pin(dapm, "HPLCOM");
265 snd_soc_dapm_nc_pin(dapm, "HPRCOM");
266 snd_soc_dapm_nc_pin(dapm, "MIC3L");
267 snd_soc_dapm_nc_pin(dapm, "MIC3R");
268 snd_soc_dapm_nc_pin(dapm, "LINE1R");
269 snd_soc_dapm_nc_pin(dapm, "LINE2L");
270 snd_soc_dapm_nc_pin(dapm, "LINE2R");
272 /* Add N810 specific controls */
273 err = snd_soc_add_controls(codec, aic33_n810_controls,
274 ARRAY_SIZE(aic33_n810_controls));
278 /* Add N810 specific widgets */
279 snd_soc_dapm_new_controls(dapm, aic33_dapm_widgets,
280 ARRAY_SIZE(aic33_dapm_widgets));
282 /* Set up N810 specific audio path audio_map */
283 return snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
286 /* Digital audio interface glue - connects codec <--> CPU */
287 static struct snd_soc_dai_link n810_dai = {
288 .name = "TLV320AIC33",
289 .stream_name = "AIC33",
290 .cpu_dai_name = "omap-mcbsp-dai.1",
291 .platform_name = "omap-pcm-audio",
292 .codec_name = "tlv320aic3x-codec.2-0018",
293 .codec_dai_name = "tlv320aic3x-hifi",
294 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
295 SND_SOC_DAIFMT_CBM_CFM,
296 .init = n810_aic33_init,
300 /* Audio machine driver */
301 static struct snd_soc_card snd_soc_n810 = {
303 .dai_link = &n810_dai,
307 static struct platform_device *n810_snd_device;
309 static int __init n810_soc_init(void)
314 if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
317 n810_snd_device = platform_device_alloc("soc-audio", -1);
318 if (!n810_snd_device)
321 platform_set_drvdata(n810_snd_device, &snd_soc_n810);
322 err = platform_device_add(n810_snd_device);
326 dev = &n810_snd_device->dev;
328 sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
329 if (IS_ERR(sys_clkout2_src)) {
330 dev_err(dev, "Could not get sys_clkout2_src clock\n");
331 err = PTR_ERR(sys_clkout2_src);
334 sys_clkout2 = clk_get(dev, "sys_clkout2");
335 if (IS_ERR(sys_clkout2)) {
336 dev_err(dev, "Could not get sys_clkout2\n");
337 err = PTR_ERR(sys_clkout2);
341 * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
342 * 96 MHz as its parent in order to get 12 MHz
344 func96m_clk = clk_get(dev, "func_96m_ck");
345 if (IS_ERR(func96m_clk)) {
346 dev_err(dev, "Could not get func 96M clock\n");
347 err = PTR_ERR(func96m_clk);
350 clk_set_parent(sys_clkout2_src, func96m_clk);
351 clk_set_rate(sys_clkout2, 12000000);
353 BUG_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
354 (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0));
356 gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
357 gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
361 clk_put(sys_clkout2);
363 clk_put(sys_clkout2_src);
365 platform_device_del(n810_snd_device);
367 platform_device_put(n810_snd_device);
372 static void __exit n810_soc_exit(void)
374 gpio_free(N810_SPEAKER_AMP_GPIO);
375 gpio_free(N810_HEADSET_AMP_GPIO);
376 clk_put(sys_clkout2_src);
377 clk_put(sys_clkout2);
378 clk_put(func96m_clk);
380 platform_device_unregister(n810_snd_device);
383 module_init(n810_soc_init);
384 module_exit(n810_soc_exit);
386 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
387 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
388 MODULE_LICENSE("GPL");