Commit | Line | Data |
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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> |
da155d5b | 27 | #include <linux/module.h> |
68fb7407 GI |
28 | |
29 | #include <sound/core.h> | |
30 | #include <sound/pcm.h> | |
31 | #include <sound/soc.h> | |
68fb7407 GI |
32 | |
33 | #include <asm/mach-types.h> | |
f0fba2ad | 34 | #include <plat/mcbsp.h> |
68fb7407 GI |
35 | |
36 | #include "omap-mcbsp.h" | |
37 | #include "omap-pcm.h" | |
68fb7407 GI |
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 | 49 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
f0fba2ad LG |
50 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
51 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
68fb7407 GI |
52 | int ret; |
53 | ||
68fb7407 GI |
54 | /* Set the codec system clock for DAC and ADC */ |
55 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
56 | SND_SOC_CLOCK_IN); | |
57 | if (ret < 0) { | |
58 | pr_err(PREFIX "can't set codec system clock\n"); | |
59 | return ret; | |
60 | } | |
61 | ||
62 | /* Set McBSP clock to external */ | |
9e5d86fe JN |
63 | ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, |
64 | 256 * params_rate(params), | |
65 | SND_SOC_CLOCK_IN); | |
68fb7407 GI |
66 | if (ret < 0) { |
67 | pr_err(PREFIX "can't set cpu system clock\n"); | |
68 | return ret; | |
69 | } | |
70 | ||
71 | ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); | |
72 | if (ret < 0) { | |
73 | pr_err(PREFIX "can't set SRG clock divider\n"); | |
74 | return ret; | |
75 | } | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
c50749de | 80 | static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w, |
68fb7407 GI |
81 | struct snd_kcontrol *k, int event) |
82 | { | |
c50749de GI |
83 | /* |
84 | * The PCM1773 DAC datasheet requires 1ms delay between switching | |
85 | * VCC power on/off and /PD pin high/low | |
86 | */ | |
68fb7407 | 87 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
c50749de GI |
88 | regulator_enable(omap3pandora_dac_reg); |
89 | mdelay(1); | |
68fb7407 | 90 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); |
68fb7407 | 91 | } else { |
68fb7407 | 92 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
c50749de GI |
93 | mdelay(1); |
94 | regulator_disable(omap3pandora_dac_reg); | |
68fb7407 GI |
95 | } |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
c50749de GI |
100 | static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, |
101 | struct snd_kcontrol *k, int event) | |
102 | { | |
103 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
104 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); | |
105 | else | |
106 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
68fb7407 GI |
111 | /* |
112 | * Audio paths on Pandora board: | |
113 | * | |
114 | * |O| ---> PCM DAC +-> AMP -> Headphone Jack | |
115 | * |M| A +--------> Line Out | |
116 | * |A| <~~clk~~+ | |
117 | * |P| <--- TWL4030 <--------- Line In and MICs | |
118 | */ | |
119 | static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = { | |
c50749de GI |
120 | SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM, |
121 | 0, 0, omap3pandora_dac_event, | |
122 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
68fb7407 GI |
123 | SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, |
124 | 0, 0, NULL, 0, omap3pandora_hp_event, | |
125 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
126 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
127 | SND_SOC_DAPM_LINE("Line Out", NULL), | |
128 | }; | |
129 | ||
130 | static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = { | |
8f008062 | 131 | SND_SOC_DAPM_MIC("Mic (internal)", NULL), |
68fb7407 GI |
132 | SND_SOC_DAPM_MIC("Mic (external)", NULL), |
133 | SND_SOC_DAPM_LINE("Line In", NULL), | |
134 | }; | |
135 | ||
136 | static const struct snd_soc_dapm_route omap3pandora_out_map[] = { | |
3b9447fb | 137 | {"PCM DAC", NULL, "APLL Enable"}, |
68fb7407 GI |
138 | {"Headphone Amplifier", NULL, "PCM DAC"}, |
139 | {"Line Out", NULL, "PCM DAC"}, | |
140 | {"Headphone Jack", NULL, "Headphone Amplifier"}, | |
141 | }; | |
142 | ||
143 | static const struct snd_soc_dapm_route omap3pandora_in_map[] = { | |
8f008062 GI |
144 | {"AUXL", NULL, "Line In"}, |
145 | {"AUXR", NULL, "Line In"}, | |
146 | ||
147 | {"MAINMIC", NULL, "Mic Bias 1"}, | |
148 | {"Mic Bias 1", NULL, "Mic (internal)"}, | |
149 | ||
150 | {"SUBMIC", NULL, "Mic Bias 2"}, | |
151 | {"Mic Bias 2", NULL, "Mic (external)"}, | |
68fb7407 GI |
152 | }; |
153 | ||
f0fba2ad | 154 | static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd) |
68fb7407 | 155 | { |
f0fba2ad | 156 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 157 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
68fb7407 GI |
158 | int ret; |
159 | ||
8f008062 | 160 | /* All TWL4030 output pins are floating */ |
ce6120cc LG |
161 | snd_soc_dapm_nc_pin(dapm, "EARPIECE"); |
162 | snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); | |
163 | snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); | |
164 | snd_soc_dapm_nc_pin(dapm, "HSOL"); | |
165 | snd_soc_dapm_nc_pin(dapm, "HSOR"); | |
166 | snd_soc_dapm_nc_pin(dapm, "CARKITL"); | |
167 | snd_soc_dapm_nc_pin(dapm, "CARKITR"); | |
168 | snd_soc_dapm_nc_pin(dapm, "HFL"); | |
169 | snd_soc_dapm_nc_pin(dapm, "HFR"); | |
170 | snd_soc_dapm_nc_pin(dapm, "VIBRA"); | |
171 | ||
172 | ret = snd_soc_dapm_new_controls(dapm, omap3pandora_out_dapm_widgets, | |
68fb7407 GI |
173 | ARRAY_SIZE(omap3pandora_out_dapm_widgets)); |
174 | if (ret < 0) | |
175 | return ret; | |
176 | ||
cb424877 | 177 | return snd_soc_dapm_add_routes(dapm, omap3pandora_out_map, |
68fb7407 | 178 | ARRAY_SIZE(omap3pandora_out_map)); |
68fb7407 GI |
179 | } |
180 | ||
f0fba2ad | 181 | static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd) |
68fb7407 | 182 | { |
f0fba2ad | 183 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 184 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
68fb7407 GI |
185 | int ret; |
186 | ||
8f008062 | 187 | /* Not comnnected */ |
ce6120cc LG |
188 | snd_soc_dapm_nc_pin(dapm, "HSMIC"); |
189 | snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); | |
190 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); | |
191 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); | |
7f185340 | 192 | |
ce6120cc | 193 | ret = snd_soc_dapm_new_controls(dapm, omap3pandora_in_dapm_widgets, |
68fb7407 GI |
194 | ARRAY_SIZE(omap3pandora_in_dapm_widgets)); |
195 | if (ret < 0) | |
196 | return ret; | |
197 | ||
cb424877 | 198 | return snd_soc_dapm_add_routes(dapm, omap3pandora_in_map, |
68fb7407 | 199 | ARRAY_SIZE(omap3pandora_in_map)); |
68fb7407 GI |
200 | } |
201 | ||
4b94dba0 GI |
202 | static struct snd_soc_ops omap3pandora_ops = { |
203 | .hw_params = omap3pandora_hw_params, | |
68fb7407 GI |
204 | }; |
205 | ||
206 | /* Digital audio interface glue - connects codec <--> CPU */ | |
207 | static struct snd_soc_dai_link omap3pandora_dai[] = { | |
208 | { | |
209 | .name = "PCM1773", | |
210 | .stream_name = "HiFi Out", | |
f0fba2ad LG |
211 | .cpu_dai_name = "omap-mcbsp-dai.1", |
212 | .codec_dai_name = "twl4030-hifi", | |
213 | .platform_name = "omap-pcm-audio", | |
214 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
215 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
216 | SND_SOC_DAIFMT_CBS_CFS, | |
4b94dba0 | 217 | .ops = &omap3pandora_ops, |
68fb7407 GI |
218 | .init = omap3pandora_out_init, |
219 | }, { | |
220 | .name = "TWL4030", | |
221 | .stream_name = "Line/Mic In", | |
f0fba2ad LG |
222 | .cpu_dai_name = "omap-mcbsp-dai.3", |
223 | .codec_dai_name = "twl4030-hifi", | |
224 | .platform_name = "omap-pcm-audio", | |
225 | .codec_name = "twl4030-codec", | |
cf9feff2 JN |
226 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
227 | SND_SOC_DAIFMT_CBS_CFS, | |
4b94dba0 | 228 | .ops = &omap3pandora_ops, |
68fb7407 GI |
229 | .init = omap3pandora_in_init, |
230 | } | |
231 | }; | |
232 | ||
233 | /* SoC card */ | |
234 | static struct snd_soc_card snd_soc_card_omap3pandora = { | |
235 | .name = "omap3pandora", | |
b425b884 | 236 | .owner = THIS_MODULE, |
68fb7407 GI |
237 | .dai_link = omap3pandora_dai, |
238 | .num_links = ARRAY_SIZE(omap3pandora_dai), | |
239 | }; | |
240 | ||
68fb7407 GI |
241 | static struct platform_device *omap3pandora_snd_device; |
242 | ||
243 | static int __init omap3pandora_soc_init(void) | |
244 | { | |
245 | int ret; | |
246 | ||
8f008062 | 247 | if (!machine_is_omap3_pandora()) |
68fb7407 | 248 | return -ENODEV; |
8f008062 | 249 | |
68fb7407 GI |
250 | pr_info("OMAP3 Pandora SoC init\n"); |
251 | ||
252 | ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); | |
253 | if (ret) { | |
254 | pr_err(PREFIX "Failed to get DAC power GPIO\n"); | |
255 | return ret; | |
256 | } | |
257 | ||
258 | ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); | |
259 | if (ret) { | |
260 | pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); | |
261 | goto fail0; | |
262 | } | |
263 | ||
264 | ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); | |
265 | if (ret) { | |
266 | pr_err(PREFIX "Failed to get amp power GPIO\n"); | |
267 | goto fail0; | |
268 | } | |
269 | ||
270 | ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
271 | if (ret) { | |
272 | pr_err(PREFIX "Failed to set amp power GPIO direction\n"); | |
273 | goto fail1; | |
274 | } | |
275 | ||
276 | omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); | |
277 | if (omap3pandora_snd_device == NULL) { | |
278 | pr_err(PREFIX "Platform device allocation failed\n"); | |
279 | ret = -ENOMEM; | |
280 | goto fail1; | |
281 | } | |
282 | ||
f0fba2ad | 283 | platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora); |
68fb7407 GI |
284 | |
285 | ret = platform_device_add(omap3pandora_snd_device); | |
286 | if (ret) { | |
287 | pr_err(PREFIX "Unable to add platform device\n"); | |
288 | goto fail2; | |
289 | } | |
290 | ||
c50749de GI |
291 | omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc"); |
292 | if (IS_ERR(omap3pandora_dac_reg)) { | |
293 | pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n", | |
294 | dev_name(&omap3pandora_snd_device->dev), | |
295 | PTR_ERR(omap3pandora_dac_reg)); | |
5c12d201 | 296 | ret = PTR_ERR(omap3pandora_dac_reg); |
c50749de GI |
297 | goto fail3; |
298 | } | |
299 | ||
68fb7407 GI |
300 | return 0; |
301 | ||
c50749de GI |
302 | fail3: |
303 | platform_device_del(omap3pandora_snd_device); | |
68fb7407 GI |
304 | fail2: |
305 | platform_device_put(omap3pandora_snd_device); | |
306 | fail1: | |
307 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
308 | fail0: | |
309 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
310 | return ret; | |
311 | } | |
312 | module_init(omap3pandora_soc_init); | |
313 | ||
314 | static void __exit omap3pandora_soc_exit(void) | |
315 | { | |
c50749de | 316 | regulator_put(omap3pandora_dac_reg); |
68fb7407 GI |
317 | platform_device_unregister(omap3pandora_snd_device); |
318 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
319 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
320 | } | |
321 | module_exit(omap3pandora_soc_exit); | |
322 | ||
323 | MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>"); | |
324 | MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); | |
325 | MODULE_LICENSE("GPL"); |