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eaae2ea7 RP |
1 | /* |
2 | * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog | |
3 | * audio output | |
4 | * | |
5 | * Copyright (c) 2016, Collabora Ltd. | |
6 | * | |
7 | * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>, | |
8 | * Romain Perier <romain.perier@collabora.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms and conditions of the GNU General Public License, | |
12 | * version 2, as published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope it will be useful, but WITHOUT | |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | * more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/gpio.h> | |
28 | #include <linux/of_gpio.h> | |
29 | #include <sound/core.h> | |
30 | #include <sound/jack.h> | |
31 | #include <sound/pcm.h> | |
32 | #include <sound/pcm_params.h> | |
33 | #include <sound/soc.h> | |
34 | #include <sound/soc-dapm.h> | |
35 | ||
36 | #include "rockchip_i2s.h" | |
37 | ||
38 | #define DRV_NAME "rk3288-snd-hdmi-analog" | |
39 | ||
40 | struct rk_drvdata { | |
41 | int gpio_hp_en; | |
42 | int gpio_hp_det; | |
43 | }; | |
44 | ||
45 | static int rk_hp_power(struct snd_soc_dapm_widget *w, | |
46 | struct snd_kcontrol *k, int event) | |
47 | { | |
48 | struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card); | |
49 | ||
50 | if (!gpio_is_valid(machine->gpio_hp_en)) | |
51 | return 0; | |
52 | ||
53 | gpio_set_value_cansleep(machine->gpio_hp_en, | |
54 | SND_SOC_DAPM_EVENT_ON(event)); | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static struct snd_soc_jack headphone_jack; | |
60 | static struct snd_soc_jack_pin headphone_jack_pins[] = { | |
61 | { | |
62 | .pin = "Analog", | |
63 | .mask = SND_JACK_HEADPHONE | |
64 | }, | |
65 | }; | |
66 | ||
67 | static const struct snd_soc_dapm_widget rk_dapm_widgets[] = { | |
68 | SND_SOC_DAPM_HP("Analog", rk_hp_power), | |
69 | SND_SOC_DAPM_LINE("HDMI", NULL), | |
70 | }; | |
71 | ||
72 | static const struct snd_kcontrol_new rk_mc_controls[] = { | |
73 | SOC_DAPM_PIN_SWITCH("Analog"), | |
74 | SOC_DAPM_PIN_SWITCH("HDMI"), | |
75 | }; | |
76 | ||
77 | static int rk_hw_params(struct snd_pcm_substream *substream, | |
78 | struct snd_pcm_hw_params *params) | |
79 | { | |
80 | int ret = 0; | |
81 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
82 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
83 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
84 | int mclk; | |
85 | ||
86 | switch (params_rate(params)) { | |
87 | case 8000: | |
88 | case 16000: | |
89 | case 24000: | |
90 | case 32000: | |
91 | case 48000: | |
92 | case 64000: | |
93 | case 96000: | |
94 | mclk = 12288000; | |
95 | break; | |
2e589fdc RP |
96 | case 192000: |
97 | mclk = 24576000; | |
98 | break; | |
eaae2ea7 RP |
99 | case 11025: |
100 | case 22050: | |
101 | case 44100: | |
102 | case 88200: | |
103 | mclk = 11289600; | |
104 | break; | |
105 | default: | |
106 | return -EINVAL; | |
107 | } | |
108 | ||
109 | ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, | |
110 | SND_SOC_CLOCK_OUT); | |
111 | ||
112 | if (ret && ret != -ENOTSUPP) { | |
113 | dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret); | |
114 | return ret; | |
115 | } | |
116 | ||
117 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, | |
118 | SND_SOC_CLOCK_IN); | |
119 | if (ret && ret != -ENOTSUPP) { | |
120 | dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret); | |
121 | return ret; | |
122 | } | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static struct snd_soc_jack_gpio rk_hp_jack_gpio = { | |
128 | .name = "Headphone detection", | |
129 | .report = SND_JACK_HEADPHONE, | |
130 | .debounce_time = 150 | |
131 | }; | |
132 | ||
133 | static int rk_init(struct snd_soc_pcm_runtime *runtime) | |
134 | { | |
135 | struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card); | |
136 | ||
137 | /* Enable Headset Jack detection */ | |
138 | if (gpio_is_valid(machine->gpio_hp_det)) { | |
139 | snd_soc_card_jack_new(runtime->card, "Headphone Jack", | |
140 | SND_JACK_HEADPHONE, &headphone_jack, | |
141 | headphone_jack_pins, | |
142 | ARRAY_SIZE(headphone_jack_pins)); | |
143 | rk_hp_jack_gpio.gpio = machine->gpio_hp_det; | |
144 | snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio); | |
145 | } | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
c12a4a40 | 150 | static const struct snd_soc_ops rk_ops = { |
eaae2ea7 RP |
151 | .hw_params = rk_hw_params, |
152 | }; | |
153 | ||
154 | static struct snd_soc_dai_link_component rk_codecs[] = { | |
155 | { }, | |
156 | { | |
157 | .name = "hdmi-audio-codec.2.auto", | |
a5ad3b4b | 158 | .dai_name = "i2s-hifi", |
eaae2ea7 RP |
159 | }, |
160 | }; | |
161 | ||
162 | static struct snd_soc_dai_link rk_dailink = { | |
163 | .name = "Codecs", | |
164 | .stream_name = "Audio", | |
165 | .init = rk_init, | |
166 | .ops = &rk_ops, | |
167 | .codecs = rk_codecs, | |
168 | .num_codecs = ARRAY_SIZE(rk_codecs), | |
169 | /* Set codecs as slave */ | |
170 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
171 | SND_SOC_DAIFMT_CBS_CFS, | |
172 | }; | |
173 | ||
174 | static struct snd_soc_card snd_soc_card_rk = { | |
175 | .name = "ROCKCHIP-I2S", | |
176 | .dai_link = &rk_dailink, | |
177 | .num_links = 1, | |
178 | .num_aux_devs = 0, | |
179 | .dapm_widgets = rk_dapm_widgets, | |
180 | .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets), | |
181 | .controls = rk_mc_controls, | |
182 | .num_controls = ARRAY_SIZE(rk_mc_controls), | |
183 | }; | |
184 | ||
185 | static int snd_rk_mc_probe(struct platform_device *pdev) | |
186 | { | |
187 | int ret = 0; | |
188 | struct snd_soc_card *card = &snd_soc_card_rk; | |
189 | struct device_node *np = pdev->dev.of_node; | |
190 | struct rk_drvdata *machine; | |
191 | struct of_phandle_args args; | |
192 | ||
193 | machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata), | |
194 | GFP_KERNEL); | |
195 | if (!machine) | |
196 | return -ENOMEM; | |
197 | ||
198 | card->dev = &pdev->dev; | |
199 | ||
200 | machine->gpio_hp_det = of_get_named_gpio(np, | |
201 | "rockchip,hp-det-gpios", 0); | |
202 | if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV) | |
203 | return machine->gpio_hp_det; | |
204 | ||
205 | machine->gpio_hp_en = of_get_named_gpio(np, | |
206 | "rockchip,hp-en-gpios", 0); | |
207 | if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV) | |
208 | return machine->gpio_hp_en; | |
209 | ||
210 | if (gpio_is_valid(machine->gpio_hp_en)) { | |
211 | ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en, | |
212 | GPIOF_OUT_INIT_LOW, "hp_en"); | |
213 | if (ret) { | |
214 | dev_err(card->dev, "cannot get hp_en gpio\n"); | |
215 | return ret; | |
216 | } | |
217 | } | |
218 | ||
219 | ret = snd_soc_of_parse_card_name(card, "rockchip,model"); | |
220 | if (ret) { | |
221 | dev_err(card->dev, "SoC parse card name failed %d\n", ret); | |
222 | return ret; | |
223 | } | |
224 | ||
225 | rk_dailink.codecs[0].of_node = of_parse_phandle(np, | |
226 | "rockchip,audio-codec", | |
227 | 0); | |
228 | if (!rk_dailink.codecs[0].of_node) { | |
229 | dev_err(&pdev->dev, | |
230 | "Property 'rockchip,audio-codec' missing or invalid\n"); | |
231 | return -EINVAL; | |
232 | } | |
233 | ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec", | |
234 | 0, 0, &args); | |
235 | if (ret) { | |
236 | dev_err(&pdev->dev, | |
237 | "Unable to parse property 'rockchip,audio-codec'\n"); | |
238 | return ret; | |
239 | } | |
240 | ||
241 | ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name); | |
242 | if (ret) { | |
243 | dev_err(&pdev->dev, "Unable to get codec_dai_name\n"); | |
244 | return ret; | |
245 | } | |
246 | ||
247 | rk_dailink.cpu_of_node = of_parse_phandle(np, "rockchip,i2s-controller", | |
248 | 0); | |
249 | if (!rk_dailink.cpu_of_node) { | |
250 | dev_err(&pdev->dev, | |
251 | "Property 'rockchip,i2s-controller' missing or invalid\n"); | |
252 | return -EINVAL; | |
253 | } | |
254 | ||
255 | rk_dailink.platform_of_node = rk_dailink.cpu_of_node; | |
256 | ||
257 | ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing"); | |
258 | if (ret) { | |
259 | dev_err(&pdev->dev, | |
260 | "Unable to parse 'rockchip,routing' property\n"); | |
261 | return ret; | |
262 | } | |
263 | ||
264 | snd_soc_card_set_drvdata(card, machine); | |
265 | ||
266 | ret = devm_snd_soc_register_card(&pdev->dev, card); | |
267 | if (ret == -EPROBE_DEFER) | |
268 | return -EPROBE_DEFER; | |
269 | if (ret) { | |
270 | dev_err(&pdev->dev, | |
271 | "Soc register card failed %d\n", ret); | |
272 | return ret; | |
273 | } | |
274 | ||
eaae2ea7 RP |
275 | return ret; |
276 | } | |
277 | ||
278 | static const struct of_device_id rockchip_sound_of_match[] = { | |
279 | { .compatible = "rockchip,rk3288-hdmi-analog", }, | |
280 | {}, | |
281 | }; | |
282 | ||
283 | MODULE_DEVICE_TABLE(of, rockchip_sound_of_match); | |
284 | ||
285 | static struct platform_driver rockchip_sound_driver = { | |
286 | .probe = snd_rk_mc_probe, | |
287 | .driver = { | |
288 | .name = DRV_NAME, | |
eaae2ea7 RP |
289 | .pm = &snd_soc_pm_ops, |
290 | .of_match_table = rockchip_sound_of_match, | |
291 | }, | |
292 | }; | |
293 | ||
294 | module_platform_driver(rockchip_sound_driver); | |
295 | ||
296 | MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>"); | |
297 | MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver"); | |
298 | MODULE_LICENSE("GPL v2"); | |
299 | MODULE_ALIAS("platform:" DRV_NAME); |