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2b27bdcc | 1 | // SPDX-License-Identifier: GPL-2.0-only |
68fb7407 GI |
2 | /* |
3 | * omap3pandora.c -- SoC audio for Pandora Handheld Console | |
4 | * | |
5 | * Author: GraÅžvydas Ignotas <notasas@gmail.com> | |
68fb7407 GI |
6 | */ |
7 | ||
8 | #include <linux/clk.h> | |
9 | #include <linux/platform_device.h> | |
10 | #include <linux/gpio.h> | |
11 | #include <linux/delay.h> | |
c50749de | 12 | #include <linux/regulator/consumer.h> |
da155d5b | 13 | #include <linux/module.h> |
68fb7407 GI |
14 | |
15 | #include <sound/core.h> | |
16 | #include <sound/pcm.h> | |
17 | #include <sound/soc.h> | |
68fb7407 GI |
18 | |
19 | #include <asm/mach-types.h> | |
2203747c | 20 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
68fb7407 GI |
21 | |
22 | #include "omap-mcbsp.h" | |
68fb7407 GI |
23 | |
24 | #define OMAP3_PANDORA_DAC_POWER_GPIO 118 | |
25 | #define OMAP3_PANDORA_AMP_POWER_GPIO 14 | |
26 | ||
27 | #define PREFIX "ASoC omap3pandora: " | |
28 | ||
c50749de GI |
29 | static struct regulator *omap3pandora_dac_reg; |
30 | ||
4b94dba0 GI |
31 | static int omap3pandora_hw_params(struct snd_pcm_substream *substream, |
32 | struct snd_pcm_hw_params *params) | |
68fb7407 | 33 | { |
9e5d86fe | 34 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
2842b871 KM |
35 | struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
36 | struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); | |
68fb7407 GI |
37 | int ret; |
38 | ||
68fb7407 GI |
39 | /* Set the codec system clock for DAC and ADC */ |
40 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | |
41 | SND_SOC_CLOCK_IN); | |
42 | if (ret < 0) { | |
43 | pr_err(PREFIX "can't set codec system clock\n"); | |
44 | return ret; | |
45 | } | |
46 | ||
47 | /* Set McBSP clock to external */ | |
9e5d86fe JN |
48 | ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, |
49 | 256 * params_rate(params), | |
50 | SND_SOC_CLOCK_IN); | |
68fb7407 GI |
51 | if (ret < 0) { |
52 | pr_err(PREFIX "can't set cpu system clock\n"); | |
53 | return ret; | |
54 | } | |
55 | ||
56 | ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); | |
57 | if (ret < 0) { | |
58 | pr_err(PREFIX "can't set SRG clock divider\n"); | |
59 | return ret; | |
60 | } | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
c50749de | 65 | static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w, |
68fb7407 GI |
66 | struct snd_kcontrol *k, int event) |
67 | { | |
dd194b48 MB |
68 | int ret; |
69 | ||
c50749de GI |
70 | /* |
71 | * The PCM1773 DAC datasheet requires 1ms delay between switching | |
72 | * VCC power on/off and /PD pin high/low | |
73 | */ | |
68fb7407 | 74 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
dd194b48 MB |
75 | ret = regulator_enable(omap3pandora_dac_reg); |
76 | if (ret) { | |
e37e0430 | 77 | dev_err(w->dapm->dev, "Failed to power DAC: %d\n", ret); |
dd194b48 MB |
78 | return ret; |
79 | } | |
c50749de | 80 | mdelay(1); |
68fb7407 | 81 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); |
68fb7407 | 82 | } else { |
68fb7407 | 83 | gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
c50749de GI |
84 | mdelay(1); |
85 | regulator_disable(omap3pandora_dac_reg); | |
68fb7407 GI |
86 | } |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
c50749de GI |
91 | static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, |
92 | struct snd_kcontrol *k, int event) | |
93 | { | |
94 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
95 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); | |
96 | else | |
97 | gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
68fb7407 GI |
102 | /* |
103 | * Audio paths on Pandora board: | |
104 | * | |
105 | * |O| ---> PCM DAC +-> AMP -> Headphone Jack | |
106 | * |M| A +--------> Line Out | |
107 | * |A| <~~clk~~+ | |
108 | * |P| <--- TWL4030 <--------- Line In and MICs | |
109 | */ | |
b2e69054 | 110 | static const struct snd_soc_dapm_widget omap3pandora_dapm_widgets[] = { |
c50749de GI |
111 | SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM, |
112 | 0, 0, omap3pandora_dac_event, | |
113 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
68fb7407 GI |
114 | SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, |
115 | 0, 0, NULL, 0, omap3pandora_hp_event, | |
116 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
117 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
118 | SND_SOC_DAPM_LINE("Line Out", NULL), | |
68fb7407 | 119 | |
8f008062 | 120 | SND_SOC_DAPM_MIC("Mic (internal)", NULL), |
68fb7407 GI |
121 | SND_SOC_DAPM_MIC("Mic (external)", NULL), |
122 | SND_SOC_DAPM_LINE("Line In", NULL), | |
123 | }; | |
124 | ||
b2e69054 | 125 | static const struct snd_soc_dapm_route omap3pandora_map[] = { |
3b9447fb | 126 | {"PCM DAC", NULL, "APLL Enable"}, |
68fb7407 GI |
127 | {"Headphone Amplifier", NULL, "PCM DAC"}, |
128 | {"Line Out", NULL, "PCM DAC"}, | |
129 | {"Headphone Jack", NULL, "Headphone Amplifier"}, | |
68fb7407 | 130 | |
8f008062 GI |
131 | {"AUXL", NULL, "Line In"}, |
132 | {"AUXR", NULL, "Line In"}, | |
133 | ||
e04d6e55 PU |
134 | {"MAINMIC", NULL, "Mic (internal)"}, |
135 | {"Mic (internal)", NULL, "Mic Bias 1"}, | |
8f008062 | 136 | |
e04d6e55 PU |
137 | {"SUBMIC", NULL, "Mic (external)"}, |
138 | {"Mic (external)", NULL, "Mic Bias 2"}, | |
68fb7407 GI |
139 | }; |
140 | ||
f0fba2ad | 141 | static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd) |
68fb7407 | 142 | { |
987731bb | 143 | struct snd_soc_dapm_context *dapm = &rtd->card->dapm; |
68fb7407 | 144 | |
8f008062 | 145 | /* All TWL4030 output pins are floating */ |
ce6120cc LG |
146 | snd_soc_dapm_nc_pin(dapm, "EARPIECE"); |
147 | snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); | |
148 | snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); | |
149 | snd_soc_dapm_nc_pin(dapm, "HSOL"); | |
150 | snd_soc_dapm_nc_pin(dapm, "HSOR"); | |
151 | snd_soc_dapm_nc_pin(dapm, "CARKITL"); | |
152 | snd_soc_dapm_nc_pin(dapm, "CARKITR"); | |
153 | snd_soc_dapm_nc_pin(dapm, "HFL"); | |
154 | snd_soc_dapm_nc_pin(dapm, "HFR"); | |
155 | snd_soc_dapm_nc_pin(dapm, "VIBRA"); | |
156 | ||
b2e69054 | 157 | return 0; |
68fb7407 GI |
158 | } |
159 | ||
f0fba2ad | 160 | static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd) |
68fb7407 | 161 | { |
987731bb | 162 | struct snd_soc_dapm_context *dapm = &rtd->card->dapm; |
68fb7407 | 163 | |
8f008062 | 164 | /* Not comnnected */ |
ce6120cc LG |
165 | snd_soc_dapm_nc_pin(dapm, "HSMIC"); |
166 | snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); | |
167 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); | |
168 | snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); | |
7f185340 | 169 | |
b2e69054 | 170 | return 0; |
68fb7407 GI |
171 | } |
172 | ||
2261cf1c | 173 | static const struct snd_soc_ops omap3pandora_ops = { |
4b94dba0 | 174 | .hw_params = omap3pandora_hw_params, |
68fb7407 GI |
175 | }; |
176 | ||
177 | /* Digital audio interface glue - connects codec <--> CPU */ | |
77723f1c KM |
178 | SND_SOC_DAILINK_DEFS(out, |
179 | DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.2")), | |
180 | DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-hifi")), | |
181 | DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.2"))); | |
182 | ||
183 | SND_SOC_DAILINK_DEFS(in, | |
184 | DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.4")), | |
185 | DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-hifi")), | |
186 | DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.4"))); | |
187 | ||
68fb7407 GI |
188 | static struct snd_soc_dai_link omap3pandora_dai[] = { |
189 | { | |
190 | .name = "PCM1773", | |
191 | .stream_name = "HiFi Out", | |
cf9feff2 JN |
192 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
193 | SND_SOC_DAIFMT_CBS_CFS, | |
4b94dba0 | 194 | .ops = &omap3pandora_ops, |
68fb7407 | 195 | .init = omap3pandora_out_init, |
77723f1c | 196 | SND_SOC_DAILINK_REG(out), |
68fb7407 GI |
197 | }, { |
198 | .name = "TWL4030", | |
199 | .stream_name = "Line/Mic In", | |
cf9feff2 JN |
200 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
201 | SND_SOC_DAIFMT_CBS_CFS, | |
4b94dba0 | 202 | .ops = &omap3pandora_ops, |
68fb7407 | 203 | .init = omap3pandora_in_init, |
77723f1c | 204 | SND_SOC_DAILINK_REG(in), |
68fb7407 GI |
205 | } |
206 | }; | |
207 | ||
208 | /* SoC card */ | |
209 | static struct snd_soc_card snd_soc_card_omap3pandora = { | |
210 | .name = "omap3pandora", | |
b425b884 | 211 | .owner = THIS_MODULE, |
68fb7407 GI |
212 | .dai_link = omap3pandora_dai, |
213 | .num_links = ARRAY_SIZE(omap3pandora_dai), | |
b2e69054 LPC |
214 | |
215 | .dapm_widgets = omap3pandora_dapm_widgets, | |
216 | .num_dapm_widgets = ARRAY_SIZE(omap3pandora_dapm_widgets), | |
217 | .dapm_routes = omap3pandora_map, | |
218 | .num_dapm_routes = ARRAY_SIZE(omap3pandora_map), | |
68fb7407 GI |
219 | }; |
220 | ||
68fb7407 GI |
221 | static struct platform_device *omap3pandora_snd_device; |
222 | ||
223 | static int __init omap3pandora_soc_init(void) | |
224 | { | |
225 | int ret; | |
226 | ||
8f008062 | 227 | if (!machine_is_omap3_pandora()) |
68fb7407 | 228 | return -ENODEV; |
8f008062 | 229 | |
68fb7407 GI |
230 | pr_info("OMAP3 Pandora SoC init\n"); |
231 | ||
232 | ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); | |
233 | if (ret) { | |
234 | pr_err(PREFIX "Failed to get DAC power GPIO\n"); | |
235 | return ret; | |
236 | } | |
237 | ||
238 | ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); | |
239 | if (ret) { | |
240 | pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); | |
241 | goto fail0; | |
242 | } | |
243 | ||
244 | ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); | |
245 | if (ret) { | |
246 | pr_err(PREFIX "Failed to get amp power GPIO\n"); | |
247 | goto fail0; | |
248 | } | |
249 | ||
250 | ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); | |
251 | if (ret) { | |
252 | pr_err(PREFIX "Failed to set amp power GPIO direction\n"); | |
253 | goto fail1; | |
254 | } | |
255 | ||
256 | omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); | |
257 | if (omap3pandora_snd_device == NULL) { | |
258 | pr_err(PREFIX "Platform device allocation failed\n"); | |
259 | ret = -ENOMEM; | |
260 | goto fail1; | |
261 | } | |
262 | ||
f0fba2ad | 263 | platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora); |
68fb7407 GI |
264 | |
265 | ret = platform_device_add(omap3pandora_snd_device); | |
266 | if (ret) { | |
267 | pr_err(PREFIX "Unable to add platform device\n"); | |
268 | goto fail2; | |
269 | } | |
270 | ||
c50749de GI |
271 | omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc"); |
272 | if (IS_ERR(omap3pandora_dac_reg)) { | |
273 | pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n", | |
274 | dev_name(&omap3pandora_snd_device->dev), | |
275 | PTR_ERR(omap3pandora_dac_reg)); | |
5c12d201 | 276 | ret = PTR_ERR(omap3pandora_dac_reg); |
c50749de GI |
277 | goto fail3; |
278 | } | |
279 | ||
68fb7407 GI |
280 | return 0; |
281 | ||
c50749de GI |
282 | fail3: |
283 | platform_device_del(omap3pandora_snd_device); | |
68fb7407 GI |
284 | fail2: |
285 | platform_device_put(omap3pandora_snd_device); | |
286 | fail1: | |
287 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
288 | fail0: | |
289 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
290 | return ret; | |
291 | } | |
292 | module_init(omap3pandora_soc_init); | |
293 | ||
294 | static void __exit omap3pandora_soc_exit(void) | |
295 | { | |
c50749de | 296 | regulator_put(omap3pandora_dac_reg); |
68fb7407 GI |
297 | platform_device_unregister(omap3pandora_snd_device); |
298 | gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); | |
299 | gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); | |
300 | } | |
301 | module_exit(omap3pandora_soc_exit); | |
302 | ||
303 | MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>"); | |
304 | MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); | |
305 | MODULE_LICENSE("GPL"); |