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68fb7407 GI |
1 | /* |
2 | * omap3pandora.c -- SoC audio for Pandora Handheld Console | |
3 | * | |
4 | * Author: GraÅžvydas Ignotas <notasas@gmail.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/gpio.h> | |
25 | #include <linux/delay.h> | |
c50749de | 26 | #include <linux/regulator/consumer.h> |
68fb7407 GI |
27 | |
28 | #include <sound/core.h> | |
29 | #include <sound/pcm.h> | |
30 | #include <sound/soc.h> | |
31 | #include <sound/soc-dapm.h> | |
32 | ||
33 | #include <asm/mach-types.h> | |
34 | ||
35 | #include "omap-mcbsp.h" | |
36 | #include "omap-pcm.h" | |
37 | #include "../codecs/twl4030.h" | |
38 | ||
39 | #define OMAP3_PANDORA_DAC_POWER_GPIO 118 | |
40 | #define OMAP3_PANDORA_AMP_POWER_GPIO 14 | |
41 | ||
42 | #define PREFIX "ASoC omap3pandora: " | |
43 | ||
c50749de GI |
44 | static struct regulator *omap3pandora_dac_reg; |
45 | ||
9e5d86fe JN |
46 | static int omap3pandora_cmn_hw_params(struct snd_pcm_substream *substream, |
47 | struct snd_pcm_hw_params *params, unsigned int fmt) | |
68fb7407 | 48 | { |
9e5d86fe JN |
49 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
50 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
51 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
68fb7407 GI |
52 | int ret; |
53 | ||
54 | /* Set codec DAI configuration */ | |
55 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); | |
56 | if (ret < 0) { | |
57 | pr_err(PREFIX "can't set codec DAI configuration\n"); | |
58 | return ret; | |
59 | } | |
60 | ||
61 | /* Set cpu DAI configuration */ | |
62 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); | |
63 | if (ret < 0) { | |
64 | pr_err(PREFIX "can't set cpu DAI configuration\n"); | |
65 | return ret; | |
66 | } | |
67 | ||
68 | /* Set the codec system clock for DAC and ADC */ | |
69 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
70 | SND_SOC_CLOCK_IN); | |
71 | if (ret < 0) { | |
72 | pr_err(PREFIX "can't set codec system clock\n"); | |
73 | return ret; | |
74 | } | |
75 | ||
76 | /* Set McBSP clock to external */ | |
9e5d86fe JN |
77 | ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, |
78 | 256 * params_rate(params), | |
79 | SND_SOC_CLOCK_IN); | |
68fb7407 GI |
80 | if (ret < 0) { |
81 | pr_err(PREFIX "can't set cpu system clock\n"); | |
82 | return ret; | |
83 | } | |
84 | ||
85 | ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); | |
86 | if (ret < 0) { | |
87 | pr_err(PREFIX "can't set SRG clock divider\n"); | |
88 | return ret; | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream, | |
95 | struct snd_pcm_hw_params *params) | |
96 | { | |
9e5d86fe | 97 | return omap3pandora_cmn_hw_params(substream, params, |
68fb7407 GI |
98 | SND_SOC_DAIFMT_I2S | |
99 | SND_SOC_DAIFMT_IB_NF | | |
100 | SND_SOC_DAIFMT_CBS_CFS); | |
101 | } | |
102 | ||
103 | static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream, | |
104 | struct snd_pcm_hw_params *params) | |
105 | { | |
9e5d86fe | 106 | return omap3pandora_cmn_hw_params(substream, params, |
68fb7407 GI |
107 | SND_SOC_DAIFMT_I2S | |
108 | SND_SOC_DAIFMT_NB_NF | | |
109 | SND_SOC_DAIFMT_CBS_CFS); | |
110 | } | |
111 | ||
c50749de | 112 | static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w, |
68fb7407 GI |
113 | struct snd_kcontrol *k, int event) |
114 | { | |
c50749de GI |
115 | /* |
116 | * The PCM1773 DAC datasheet requires 1ms delay between switching | |
117 | * VCC power on/off and /PD pin high/low | |
118 | */ | |
68fb7407 | 119 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
c50749de GI |
120 | regulator_enable(omap3pandora_dac_reg); |
121 | mdelay(1); | |
68fb7407 | 122 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); |
68fb7407 | 123 | } else { |
68fb7407 | 124 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
c50749de GI |
125 | mdelay(1); |
126 | regulator_disable(omap3pandora_dac_reg); | |
68fb7407 GI |
127 | } |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
c50749de GI |
132 | static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, |
133 | struct snd_kcontrol *k, int event) | |
134 | { | |
135 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
136 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); | |
137 | else | |
138 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
68fb7407 GI |
143 | /* |
144 | * Audio paths on Pandora board: | |
145 | * | |
146 | * |O| ---> PCM DAC +-> AMP -> Headphone Jack | |
147 | * |M| A +--------> Line Out | |
148 | * |A| <~~clk~~+ | |
149 | * |P| <--- TWL4030 <--------- Line In and MICs | |
150 | */ | |
151 | static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = { | |
c50749de GI |
152 | SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM, |
153 | 0, 0, omap3pandora_dac_event, | |
154 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
68fb7407 GI |
155 | SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, |
156 | 0, 0, NULL, 0, omap3pandora_hp_event, | |
157 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
158 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
159 | SND_SOC_DAPM_LINE("Line Out", NULL), | |
160 | }; | |
161 | ||
162 | static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = { | |
8f008062 | 163 | SND_SOC_DAPM_MIC("Mic (internal)", NULL), |
68fb7407 GI |
164 | SND_SOC_DAPM_MIC("Mic (external)", NULL), |
165 | SND_SOC_DAPM_LINE("Line In", NULL), | |
166 | }; | |
167 | ||
168 | static const struct snd_soc_dapm_route omap3pandora_out_map[] = { | |
3b9447fb | 169 | {"PCM DAC", NULL, "APLL Enable"}, |
68fb7407 GI |
170 | {"Headphone Amplifier", NULL, "PCM DAC"}, |
171 | {"Line Out", NULL, "PCM DAC"}, | |
172 | {"Headphone Jack", NULL, "Headphone Amplifier"}, | |
173 | }; | |
174 | ||
175 | static const struct snd_soc_dapm_route omap3pandora_in_map[] = { | |
8f008062 GI |
176 | {"AUXL", NULL, "Line In"}, |
177 | {"AUXR", NULL, "Line In"}, | |
178 | ||
179 | {"MAINMIC", NULL, "Mic Bias 1"}, | |
180 | {"Mic Bias 1", NULL, "Mic (internal)"}, | |
181 | ||
182 | {"SUBMIC", NULL, "Mic Bias 2"}, | |
183 | {"Mic Bias 2", NULL, "Mic (external)"}, | |
68fb7407 GI |
184 | }; |
185 | ||
186 | static int omap3pandora_out_init(struct snd_soc_codec *codec) | |
187 | { | |
188 | int ret; | |
189 | ||
8f008062 | 190 | /* All TWL4030 output pins are floating */ |
8f008062 GI |
191 | snd_soc_dapm_nc_pin(codec, "EARPIECE"); |
192 | snd_soc_dapm_nc_pin(codec, "PREDRIVEL"); | |
193 | snd_soc_dapm_nc_pin(codec, "PREDRIVER"); | |
194 | snd_soc_dapm_nc_pin(codec, "HSOL"); | |
195 | snd_soc_dapm_nc_pin(codec, "HSOR"); | |
196 | snd_soc_dapm_nc_pin(codec, "CARKITL"); | |
197 | snd_soc_dapm_nc_pin(codec, "CARKITR"); | |
198 | snd_soc_dapm_nc_pin(codec, "HFL"); | |
199 | snd_soc_dapm_nc_pin(codec, "HFR"); | |
f3dd7041 | 200 | snd_soc_dapm_nc_pin(codec, "VIBRA"); |
8f008062 | 201 | |
68fb7407 GI |
202 | ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets, |
203 | ARRAY_SIZE(omap3pandora_out_dapm_widgets)); | |
204 | if (ret < 0) | |
205 | return ret; | |
206 | ||
207 | snd_soc_dapm_add_routes(codec, omap3pandora_out_map, | |
208 | ARRAY_SIZE(omap3pandora_out_map)); | |
209 | ||
210 | return snd_soc_dapm_sync(codec); | |
211 | } | |
212 | ||
213 | static int omap3pandora_in_init(struct snd_soc_codec *codec) | |
214 | { | |
215 | int ret; | |
216 | ||
8f008062 GI |
217 | /* Not comnnected */ |
218 | snd_soc_dapm_nc_pin(codec, "HSMIC"); | |
219 | snd_soc_dapm_nc_pin(codec, "CARKITMIC"); | |
220 | snd_soc_dapm_nc_pin(codec, "DIGIMIC0"); | |
221 | snd_soc_dapm_nc_pin(codec, "DIGIMIC1"); | |
7f185340 | 222 | |
68fb7407 GI |
223 | ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets, |
224 | ARRAY_SIZE(omap3pandora_in_dapm_widgets)); | |
225 | if (ret < 0) | |
226 | return ret; | |
227 | ||
228 | snd_soc_dapm_add_routes(codec, omap3pandora_in_map, | |
229 | ARRAY_SIZE(omap3pandora_in_map)); | |
230 | ||
231 | return snd_soc_dapm_sync(codec); | |
232 | } | |
233 | ||
234 | static struct snd_soc_ops omap3pandora_out_ops = { | |
235 | .hw_params = omap3pandora_out_hw_params, | |
236 | }; | |
237 | ||
238 | static struct snd_soc_ops omap3pandora_in_ops = { | |
239 | .hw_params = omap3pandora_in_hw_params, | |
240 | }; | |
241 | ||
242 | /* Digital audio interface glue - connects codec <--> CPU */ | |
243 | static struct snd_soc_dai_link omap3pandora_dai[] = { | |
244 | { | |
245 | .name = "PCM1773", | |
246 | .stream_name = "HiFi Out", | |
247 | .cpu_dai = &omap_mcbsp_dai[0], | |
7154b3e8 | 248 | .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], |
68fb7407 GI |
249 | .ops = &omap3pandora_out_ops, |
250 | .init = omap3pandora_out_init, | |
251 | }, { | |
252 | .name = "TWL4030", | |
253 | .stream_name = "Line/Mic In", | |
254 | .cpu_dai = &omap_mcbsp_dai[1], | |
7154b3e8 | 255 | .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], |
68fb7407 GI |
256 | .ops = &omap3pandora_in_ops, |
257 | .init = omap3pandora_in_init, | |
258 | } | |
259 | }; | |
260 | ||
261 | /* SoC card */ | |
262 | static struct snd_soc_card snd_soc_card_omap3pandora = { | |
263 | .name = "omap3pandora", | |
264 | .platform = &omap_soc_platform, | |
265 | .dai_link = omap3pandora_dai, | |
266 | .num_links = ARRAY_SIZE(omap3pandora_dai), | |
267 | }; | |
268 | ||
269 | /* Audio subsystem */ | |
270 | static struct snd_soc_device omap3pandora_snd_data = { | |
271 | .card = &snd_soc_card_omap3pandora, | |
272 | .codec_dev = &soc_codec_dev_twl4030, | |
273 | }; | |
274 | ||
275 | static struct platform_device *omap3pandora_snd_device; | |
276 | ||
277 | static int __init omap3pandora_soc_init(void) | |
278 | { | |
279 | int ret; | |
280 | ||
8f008062 | 281 | if (!machine_is_omap3_pandora()) |
68fb7407 | 282 | return -ENODEV; |
8f008062 | 283 | |
68fb7407 GI |
284 | pr_info("OMAP3 Pandora SoC init\n"); |
285 | ||
286 | ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); | |
287 | if (ret) { | |
288 | pr_err(PREFIX "Failed to get DAC power GPIO\n"); | |
289 | return ret; | |
290 | } | |
291 | ||
292 | ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); | |
293 | if (ret) { | |
294 | pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); | |
295 | goto fail0; | |
296 | } | |
297 | ||
298 | ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); | |
299 | if (ret) { | |
300 | pr_err(PREFIX "Failed to get amp power GPIO\n"); | |
301 | goto fail0; | |
302 | } | |
303 | ||
304 | ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
305 | if (ret) { | |
306 | pr_err(PREFIX "Failed to set amp power GPIO direction\n"); | |
307 | goto fail1; | |
308 | } | |
309 | ||
310 | omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); | |
311 | if (omap3pandora_snd_device == NULL) { | |
312 | pr_err(PREFIX "Platform device allocation failed\n"); | |
313 | ret = -ENOMEM; | |
314 | goto fail1; | |
315 | } | |
316 | ||
317 | platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data); | |
318 | omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev; | |
319 | *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */ | |
320 | *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */ | |
321 | ||
322 | ret = platform_device_add(omap3pandora_snd_device); | |
323 | if (ret) { | |
324 | pr_err(PREFIX "Unable to add platform device\n"); | |
325 | goto fail2; | |
326 | } | |
327 | ||
c50749de GI |
328 | omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc"); |
329 | if (IS_ERR(omap3pandora_dac_reg)) { | |
330 | pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n", | |
331 | dev_name(&omap3pandora_snd_device->dev), | |
332 | PTR_ERR(omap3pandora_dac_reg)); | |
333 | goto fail3; | |
334 | } | |
335 | ||
68fb7407 GI |
336 | return 0; |
337 | ||
c50749de GI |
338 | fail3: |
339 | platform_device_del(omap3pandora_snd_device); | |
68fb7407 GI |
340 | fail2: |
341 | platform_device_put(omap3pandora_snd_device); | |
342 | fail1: | |
343 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
344 | fail0: | |
345 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
346 | return ret; | |
347 | } | |
348 | module_init(omap3pandora_soc_init); | |
349 | ||
350 | static void __exit omap3pandora_soc_exit(void) | |
351 | { | |
c50749de | 352 | regulator_put(omap3pandora_dac_reg); |
68fb7407 GI |
353 | platform_device_unregister(omap3pandora_snd_device); |
354 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
355 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
356 | } | |
357 | module_exit(omap3pandora_soc_exit); | |
358 | ||
359 | MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>"); | |
360 | MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); | |
361 | MODULE_LICENSE("GPL"); |