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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 | ||
4b94dba0 GI |
46 | static int omap3pandora_hw_params(struct snd_pcm_substream *substream, |
47 | struct snd_pcm_hw_params *params) | |
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; | |
4b94dba0 GI |
52 | int fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
53 | SND_SOC_DAIFMT_CBS_CFS; | |
68fb7407 GI |
54 | int ret; |
55 | ||
56 | /* Set codec DAI configuration */ | |
57 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); | |
58 | if (ret < 0) { | |
59 | pr_err(PREFIX "can't set codec DAI configuration\n"); | |
60 | return ret; | |
61 | } | |
62 | ||
63 | /* Set cpu DAI configuration */ | |
64 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); | |
65 | if (ret < 0) { | |
66 | pr_err(PREFIX "can't set cpu DAI configuration\n"); | |
67 | return ret; | |
68 | } | |
69 | ||
70 | /* Set the codec system clock for DAC and ADC */ | |
71 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
72 | SND_SOC_CLOCK_IN); | |
73 | if (ret < 0) { | |
74 | pr_err(PREFIX "can't set codec system clock\n"); | |
75 | return ret; | |
76 | } | |
77 | ||
78 | /* Set McBSP clock to external */ | |
9e5d86fe JN |
79 | ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, |
80 | 256 * params_rate(params), | |
81 | SND_SOC_CLOCK_IN); | |
68fb7407 GI |
82 | if (ret < 0) { |
83 | pr_err(PREFIX "can't set cpu system clock\n"); | |
84 | return ret; | |
85 | } | |
86 | ||
87 | ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); | |
88 | if (ret < 0) { | |
89 | pr_err(PREFIX "can't set SRG clock divider\n"); | |
90 | return ret; | |
91 | } | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
c50749de | 96 | static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w, |
68fb7407 GI |
97 | struct snd_kcontrol *k, int event) |
98 | { | |
c50749de GI |
99 | /* |
100 | * The PCM1773 DAC datasheet requires 1ms delay between switching | |
101 | * VCC power on/off and /PD pin high/low | |
102 | */ | |
68fb7407 | 103 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
c50749de GI |
104 | regulator_enable(omap3pandora_dac_reg); |
105 | mdelay(1); | |
68fb7407 | 106 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); |
68fb7407 | 107 | } else { |
68fb7407 | 108 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
c50749de GI |
109 | mdelay(1); |
110 | regulator_disable(omap3pandora_dac_reg); | |
68fb7407 GI |
111 | } |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
c50749de GI |
116 | static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, |
117 | struct snd_kcontrol *k, int event) | |
118 | { | |
119 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
120 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); | |
121 | else | |
122 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
68fb7407 GI |
127 | /* |
128 | * Audio paths on Pandora board: | |
129 | * | |
130 | * |O| ---> PCM DAC +-> AMP -> Headphone Jack | |
131 | * |M| A +--------> Line Out | |
132 | * |A| <~~clk~~+ | |
133 | * |P| <--- TWL4030 <--------- Line In and MICs | |
134 | */ | |
135 | static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = { | |
c50749de GI |
136 | SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM, |
137 | 0, 0, omap3pandora_dac_event, | |
138 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
68fb7407 GI |
139 | SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, |
140 | 0, 0, NULL, 0, omap3pandora_hp_event, | |
141 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
142 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
143 | SND_SOC_DAPM_LINE("Line Out", NULL), | |
144 | }; | |
145 | ||
146 | static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = { | |
8f008062 | 147 | SND_SOC_DAPM_MIC("Mic (internal)", NULL), |
68fb7407 GI |
148 | SND_SOC_DAPM_MIC("Mic (external)", NULL), |
149 | SND_SOC_DAPM_LINE("Line In", NULL), | |
150 | }; | |
151 | ||
152 | static const struct snd_soc_dapm_route omap3pandora_out_map[] = { | |
3b9447fb | 153 | {"PCM DAC", NULL, "APLL Enable"}, |
68fb7407 GI |
154 | {"Headphone Amplifier", NULL, "PCM DAC"}, |
155 | {"Line Out", NULL, "PCM DAC"}, | |
156 | {"Headphone Jack", NULL, "Headphone Amplifier"}, | |
157 | }; | |
158 | ||
159 | static const struct snd_soc_dapm_route omap3pandora_in_map[] = { | |
8f008062 GI |
160 | {"AUXL", NULL, "Line In"}, |
161 | {"AUXR", NULL, "Line In"}, | |
162 | ||
163 | {"MAINMIC", NULL, "Mic Bias 1"}, | |
164 | {"Mic Bias 1", NULL, "Mic (internal)"}, | |
165 | ||
166 | {"SUBMIC", NULL, "Mic Bias 2"}, | |
167 | {"Mic Bias 2", NULL, "Mic (external)"}, | |
68fb7407 GI |
168 | }; |
169 | ||
170 | static int omap3pandora_out_init(struct snd_soc_codec *codec) | |
171 | { | |
172 | int ret; | |
173 | ||
8f008062 | 174 | /* All TWL4030 output pins are floating */ |
8f008062 GI |
175 | snd_soc_dapm_nc_pin(codec, "EARPIECE"); |
176 | snd_soc_dapm_nc_pin(codec, "PREDRIVEL"); | |
177 | snd_soc_dapm_nc_pin(codec, "PREDRIVER"); | |
178 | snd_soc_dapm_nc_pin(codec, "HSOL"); | |
179 | snd_soc_dapm_nc_pin(codec, "HSOR"); | |
180 | snd_soc_dapm_nc_pin(codec, "CARKITL"); | |
181 | snd_soc_dapm_nc_pin(codec, "CARKITR"); | |
182 | snd_soc_dapm_nc_pin(codec, "HFL"); | |
183 | snd_soc_dapm_nc_pin(codec, "HFR"); | |
f3dd7041 | 184 | snd_soc_dapm_nc_pin(codec, "VIBRA"); |
8f008062 | 185 | |
68fb7407 GI |
186 | ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets, |
187 | ARRAY_SIZE(omap3pandora_out_dapm_widgets)); | |
188 | if (ret < 0) | |
189 | return ret; | |
190 | ||
191 | snd_soc_dapm_add_routes(codec, omap3pandora_out_map, | |
192 | ARRAY_SIZE(omap3pandora_out_map)); | |
193 | ||
194 | return snd_soc_dapm_sync(codec); | |
195 | } | |
196 | ||
197 | static int omap3pandora_in_init(struct snd_soc_codec *codec) | |
198 | { | |
199 | int ret; | |
200 | ||
8f008062 GI |
201 | /* Not comnnected */ |
202 | snd_soc_dapm_nc_pin(codec, "HSMIC"); | |
203 | snd_soc_dapm_nc_pin(codec, "CARKITMIC"); | |
204 | snd_soc_dapm_nc_pin(codec, "DIGIMIC0"); | |
205 | snd_soc_dapm_nc_pin(codec, "DIGIMIC1"); | |
7f185340 | 206 | |
68fb7407 GI |
207 | ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets, |
208 | ARRAY_SIZE(omap3pandora_in_dapm_widgets)); | |
209 | if (ret < 0) | |
210 | return ret; | |
211 | ||
212 | snd_soc_dapm_add_routes(codec, omap3pandora_in_map, | |
213 | ARRAY_SIZE(omap3pandora_in_map)); | |
214 | ||
215 | return snd_soc_dapm_sync(codec); | |
216 | } | |
217 | ||
4b94dba0 GI |
218 | static struct snd_soc_ops omap3pandora_ops = { |
219 | .hw_params = omap3pandora_hw_params, | |
68fb7407 GI |
220 | }; |
221 | ||
222 | /* Digital audio interface glue - connects codec <--> CPU */ | |
223 | static struct snd_soc_dai_link omap3pandora_dai[] = { | |
224 | { | |
225 | .name = "PCM1773", | |
226 | .stream_name = "HiFi Out", | |
227 | .cpu_dai = &omap_mcbsp_dai[0], | |
7154b3e8 | 228 | .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], |
4b94dba0 | 229 | .ops = &omap3pandora_ops, |
68fb7407 GI |
230 | .init = omap3pandora_out_init, |
231 | }, { | |
232 | .name = "TWL4030", | |
233 | .stream_name = "Line/Mic In", | |
234 | .cpu_dai = &omap_mcbsp_dai[1], | |
7154b3e8 | 235 | .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], |
4b94dba0 | 236 | .ops = &omap3pandora_ops, |
68fb7407 GI |
237 | .init = omap3pandora_in_init, |
238 | } | |
239 | }; | |
240 | ||
241 | /* SoC card */ | |
242 | static struct snd_soc_card snd_soc_card_omap3pandora = { | |
243 | .name = "omap3pandora", | |
244 | .platform = &omap_soc_platform, | |
245 | .dai_link = omap3pandora_dai, | |
246 | .num_links = ARRAY_SIZE(omap3pandora_dai), | |
247 | }; | |
248 | ||
249 | /* Audio subsystem */ | |
250 | static struct snd_soc_device omap3pandora_snd_data = { | |
251 | .card = &snd_soc_card_omap3pandora, | |
252 | .codec_dev = &soc_codec_dev_twl4030, | |
253 | }; | |
254 | ||
255 | static struct platform_device *omap3pandora_snd_device; | |
256 | ||
257 | static int __init omap3pandora_soc_init(void) | |
258 | { | |
259 | int ret; | |
260 | ||
8f008062 | 261 | if (!machine_is_omap3_pandora()) |
68fb7407 | 262 | return -ENODEV; |
8f008062 | 263 | |
68fb7407 GI |
264 | pr_info("OMAP3 Pandora SoC init\n"); |
265 | ||
266 | ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); | |
267 | if (ret) { | |
268 | pr_err(PREFIX "Failed to get DAC power GPIO\n"); | |
269 | return ret; | |
270 | } | |
271 | ||
272 | ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); | |
273 | if (ret) { | |
274 | pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); | |
275 | goto fail0; | |
276 | } | |
277 | ||
278 | ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); | |
279 | if (ret) { | |
280 | pr_err(PREFIX "Failed to get amp power GPIO\n"); | |
281 | goto fail0; | |
282 | } | |
283 | ||
284 | ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
285 | if (ret) { | |
286 | pr_err(PREFIX "Failed to set amp power GPIO direction\n"); | |
287 | goto fail1; | |
288 | } | |
289 | ||
290 | omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); | |
291 | if (omap3pandora_snd_device == NULL) { | |
292 | pr_err(PREFIX "Platform device allocation failed\n"); | |
293 | ret = -ENOMEM; | |
294 | goto fail1; | |
295 | } | |
296 | ||
297 | platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data); | |
298 | omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev; | |
299 | *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */ | |
300 | *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */ | |
301 | ||
302 | ret = platform_device_add(omap3pandora_snd_device); | |
303 | if (ret) { | |
304 | pr_err(PREFIX "Unable to add platform device\n"); | |
305 | goto fail2; | |
306 | } | |
307 | ||
c50749de GI |
308 | omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc"); |
309 | if (IS_ERR(omap3pandora_dac_reg)) { | |
310 | pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n", | |
311 | dev_name(&omap3pandora_snd_device->dev), | |
312 | PTR_ERR(omap3pandora_dac_reg)); | |
313 | goto fail3; | |
314 | } | |
315 | ||
68fb7407 GI |
316 | return 0; |
317 | ||
c50749de GI |
318 | fail3: |
319 | platform_device_del(omap3pandora_snd_device); | |
68fb7407 GI |
320 | fail2: |
321 | platform_device_put(omap3pandora_snd_device); | |
322 | fail1: | |
323 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
324 | fail0: | |
325 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
326 | return ret; | |
327 | } | |
328 | module_init(omap3pandora_soc_init); | |
329 | ||
330 | static void __exit omap3pandora_soc_exit(void) | |
331 | { | |
c50749de | 332 | regulator_put(omap3pandora_dac_reg); |
68fb7407 GI |
333 | platform_device_unregister(omap3pandora_snd_device); |
334 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
335 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
336 | } | |
337 | module_exit(omap3pandora_soc_exit); | |
338 | ||
339 | MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>"); | |
340 | MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); | |
341 | MODULE_LICENSE("GPL"); |