2 * n810.c -- SoC audio for Nokia N810
4 * Copyright (C) 2008 Nokia Corporation
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 <linux/gpio.h>
33 #include <linux/module.h>
34 #include <linux/platform_data/asoc-ti-mcbsp.h>
36 #include "omap-mcbsp.h"
38 #define N810_HEADSET_AMP_GPIO 10
39 #define N810_SPEAKER_AMP_GPIO 101
48 static struct clk *sys_clkout2;
49 static struct clk *sys_clkout2_src;
50 static struct clk *func96m_clk;
52 static int n810_spk_func;
53 static int n810_jack_func;
54 static int n810_dmic_func;
56 static void n810_ext_control(struct snd_soc_dapm_context *dapm)
58 int hp = 0, line1l = 0;
60 switch (n810_jack_func) {
71 snd_soc_dapm_mutex_lock(dapm);
74 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
76 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
79 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
81 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
83 snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
85 snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
88 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
90 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
92 snd_soc_dapm_sync_unlocked(dapm);
94 snd_soc_dapm_mutex_unlock(dapm);
97 static int n810_startup(struct snd_pcm_substream *substream)
99 struct snd_pcm_runtime *runtime = substream->runtime;
100 struct snd_soc_pcm_runtime *rtd = substream->private_data;
102 snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
104 n810_ext_control(&rtd->card->dapm);
105 return clk_prepare_enable(sys_clkout2);
108 static void n810_shutdown(struct snd_pcm_substream *substream)
110 clk_disable_unprepare(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 const 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.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
146 if (n810_spk_func == ucontrol->value.enumerated.item[0])
149 n810_spk_func = ucontrol->value.enumerated.item[0];
150 n810_ext_control(&card->dapm);
155 static int n810_get_jack(struct snd_kcontrol *kcontrol,
156 struct snd_ctl_elem_value *ucontrol)
158 ucontrol->value.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
168 if (n810_jack_func == ucontrol->value.enumerated.item[0])
171 n810_jack_func = ucontrol->value.enumerated.item[0];
172 n810_ext_control(&card->dapm);
177 static int n810_get_input(struct snd_kcontrol *kcontrol,
178 struct snd_ctl_elem_value *ucontrol)
180 ucontrol->value.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
190 if (n810_dmic_func == ucontrol->value.enumerated.item[0])
193 n810_dmic_func = ucontrol->value.enumerated.item[0];
194 n810_ext_control(&card->dapm);
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),
225 SND_SOC_DAPM_MIC("HS Mic", NULL),
228 static const struct snd_soc_dapm_route audio_map[] = {
229 {"Headphone Jack", NULL, "HPLOUT"},
230 {"Headphone Jack", NULL, "HPROUT"},
232 {"Ext Spk", NULL, "LLOUT"},
233 {"Ext Spk", NULL, "RLOUT"},
235 {"DMic Rate 64", NULL, "DMic"},
236 {"DMic", NULL, "Mic Bias"},
239 * Note that the mic bias is coming from Retu/Vilma and we don't have
240 * control over it atm. The analog HS mic is not working. <- TODO
242 {"LINE1L", NULL, "HS Mic"},
245 static const char *spk_function[] = {"Off", "On"};
246 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
247 static const char *input_function[] = {"ADC", "Digital Mic"};
248 static const struct soc_enum n810_enum[] = {
249 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
250 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
251 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
254 static const struct snd_kcontrol_new aic33_n810_controls[] = {
255 SOC_ENUM_EXT("Speaker Function", n810_enum[0],
256 n810_get_spk, n810_set_spk),
257 SOC_ENUM_EXT("Jack Function", n810_enum[1],
258 n810_get_jack, n810_set_jack),
259 SOC_ENUM_EXT("Input Select", n810_enum[2],
260 n810_get_input, n810_set_input),
263 /* Digital audio interface glue - connects codec <--> CPU */
264 static struct snd_soc_dai_link n810_dai = {
265 .name = "TLV320AIC33",
266 .stream_name = "AIC33",
267 .cpu_dai_name = "48076000.mcbsp",
268 .platform_name = "48076000.mcbsp",
269 .codec_name = "tlv320aic3x-codec.1-0018",
270 .codec_dai_name = "tlv320aic3x-hifi",
271 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
272 SND_SOC_DAIFMT_CBM_CFM,
276 /* Audio machine driver */
277 static struct snd_soc_card snd_soc_n810 = {
279 .owner = THIS_MODULE,
280 .dai_link = &n810_dai,
283 .controls = aic33_n810_controls,
284 .num_controls = ARRAY_SIZE(aic33_n810_controls),
285 .dapm_widgets = aic33_dapm_widgets,
286 .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
287 .dapm_routes = audio_map,
288 .num_dapm_routes = ARRAY_SIZE(audio_map),
289 .fully_routed = true,
292 static struct platform_device *n810_snd_device;
294 static int __init n810_soc_init(void)
299 if (!of_have_populated_dt() ||
300 (!of_machine_is_compatible("nokia,n810") &&
301 !of_machine_is_compatible("nokia,n810-wimax")))
304 n810_snd_device = platform_device_alloc("soc-audio", -1);
305 if (!n810_snd_device)
308 platform_set_drvdata(n810_snd_device, &snd_soc_n810);
309 err = platform_device_add(n810_snd_device);
313 dev = &n810_snd_device->dev;
315 sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
316 if (IS_ERR(sys_clkout2_src)) {
317 dev_err(dev, "Could not get sys_clkout2_src clock\n");
318 err = PTR_ERR(sys_clkout2_src);
321 sys_clkout2 = clk_get(dev, "sys_clkout2");
322 if (IS_ERR(sys_clkout2)) {
323 dev_err(dev, "Could not get sys_clkout2\n");
324 err = PTR_ERR(sys_clkout2);
328 * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
329 * 96 MHz as its parent in order to get 12 MHz
331 func96m_clk = clk_get(dev, "func_96m_ck");
332 if (IS_ERR(func96m_clk)) {
333 dev_err(dev, "Could not get func 96M clock\n");
334 err = PTR_ERR(func96m_clk);
337 clk_set_parent(sys_clkout2_src, func96m_clk);
338 clk_set_rate(sys_clkout2, 12000000);
340 if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
341 (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
346 gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
347 gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
351 clk_put(sys_clkout2);
353 clk_put(sys_clkout2_src);
355 platform_device_del(n810_snd_device);
357 platform_device_put(n810_snd_device);
362 static void __exit n810_soc_exit(void)
364 gpio_free(N810_SPEAKER_AMP_GPIO);
365 gpio_free(N810_HEADSET_AMP_GPIO);
366 clk_put(sys_clkout2_src);
367 clk_put(sys_clkout2);
368 clk_put(func96m_clk);
370 platform_device_unregister(n810_snd_device);
373 module_init(n810_soc_init);
374 module_exit(n810_soc_exit);
377 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
378 MODULE_LICENSE("GPL");