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Linux/sound/soc/rockchip/rockchip_rt5645.c

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  1 /*
  2  * Rockchip machine ASoC driver for boards using a RT5645/RT5650 CODEC.
  3  *
  4  * Copyright (c) 2015, ROCKCHIP CORPORATION.  All rights reserved.
  5  *
  6  * This program is free software; you can redistribute it and/or modify it
  7  * under the terms and conditions 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 it will be useful, but WITHOUT
 11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 13  * more details.
 14  *
 15  * You should have received a copy of the GNU General Public License
 16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 17  *
 18  */
 19 
 20 #include <linux/module.h>
 21 #include <linux/platform_device.h>
 22 #include <linux/slab.h>
 23 #include <linux/gpio.h>
 24 #include <linux/of_gpio.h>
 25 #include <linux/delay.h>
 26 #include <sound/core.h>
 27 #include <sound/jack.h>
 28 #include <sound/pcm.h>
 29 #include <sound/pcm_params.h>
 30 #include <sound/soc.h>
 31 #include "rockchip_i2s.h"
 32 
 33 #define DRV_NAME "rockchip-snd-rt5645"
 34 
 35 static struct snd_soc_jack headset_jack;
 36 
 37 /* Jack detect via rt5645 driver. */
 38 extern int rt5645_set_jack_detect(struct snd_soc_codec *codec,
 39         struct snd_soc_jack *hp_jack, struct snd_soc_jack *mic_jack,
 40         struct snd_soc_jack *btn_jack);
 41 
 42 static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
 43         SND_SOC_DAPM_HP("Headphones", NULL),
 44         SND_SOC_DAPM_SPK("Speakers", NULL),
 45         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 46         SND_SOC_DAPM_MIC("Int Mic", NULL),
 47 };
 48 
 49 static const struct snd_soc_dapm_route rk_audio_map[] = {
 50         /* Input Lines */
 51         {"DMIC L2", NULL, "Int Mic"},
 52         {"DMIC R2", NULL, "Int Mic"},
 53         {"RECMIXL", NULL, "Headset Mic"},
 54         {"RECMIXR", NULL, "Headset Mic"},
 55 
 56         /* Output Lines */
 57         {"Headphones", NULL, "HPOR"},
 58         {"Headphones", NULL, "HPOL"},
 59         {"Speakers", NULL, "SPOL"},
 60         {"Speakers", NULL, "SPOR"},
 61 };
 62 
 63 static const struct snd_kcontrol_new rk_mc_controls[] = {
 64         SOC_DAPM_PIN_SWITCH("Headphones"),
 65         SOC_DAPM_PIN_SWITCH("Speakers"),
 66         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 67         SOC_DAPM_PIN_SWITCH("Int Mic"),
 68 };
 69 
 70 static int rk_aif1_hw_params(struct snd_pcm_substream *substream,
 71                              struct snd_pcm_hw_params *params)
 72 {
 73         int ret = 0;
 74         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 75         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 76         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 77         int mclk;
 78 
 79         switch (params_rate(params)) {
 80         case 8000:
 81         case 16000:
 82         case 24000:
 83         case 32000:
 84         case 48000:
 85         case 64000:
 86         case 96000:
 87                 mclk = 12288000;
 88                 break;
 89         case 11025:
 90         case 22050:
 91         case 44100:
 92         case 88200:
 93                 mclk = 11289600;
 94                 break;
 95         default:
 96                 return -EINVAL;
 97         }
 98 
 99         ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
100                                      SND_SOC_CLOCK_OUT);
101         if (ret < 0) {
102                 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
103                 return ret;
104         }
105 
106         ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
107                                      SND_SOC_CLOCK_IN);
108         if (ret < 0) {
109                 dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
110                 return ret;
111         }
112 
113         return ret;
114 }
115 
116 static int rk_init(struct snd_soc_pcm_runtime *runtime)
117 {
118         struct snd_soc_card *card = runtime->card;
119         int ret;
120 
121         /* Enable Headset and 4 Buttons Jack detection */
122         ret = snd_soc_card_jack_new(card, "Headset Jack",
123                                     SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
124                                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
125                                     SND_JACK_BTN_2 | SND_JACK_BTN_3,
126                                     &headset_jack, NULL, 0);
127         if (ret) {
128                 dev_err(card->dev, "New Headset Jack failed! (%d)\n", ret);
129                 return ret;
130         }
131 
132         return rt5645_set_jack_detect(runtime->codec,
133                                      &headset_jack,
134                                      &headset_jack,
135                                      &headset_jack);
136 }
137 
138 static struct snd_soc_ops rk_aif1_ops = {
139         .hw_params = rk_aif1_hw_params,
140 };
141 
142 static struct snd_soc_dai_link rk_dailink = {
143         .name = "rt5645",
144         .stream_name = "rt5645 PCM",
145         .codec_dai_name = "rt5645-aif1",
146         .init = rk_init,
147         .ops = &rk_aif1_ops,
148         /* set rt5645 as slave */
149         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
150                 SND_SOC_DAIFMT_CBS_CFS,
151 };
152 
153 static struct snd_soc_card snd_soc_card_rk = {
154         .name = "I2S-RT5650",
155         .owner = THIS_MODULE,
156         .dai_link = &rk_dailink,
157         .num_links = 1,
158         .dapm_widgets = rk_dapm_widgets,
159         .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
160         .dapm_routes = rk_audio_map,
161         .num_dapm_routes = ARRAY_SIZE(rk_audio_map),
162         .controls = rk_mc_controls,
163         .num_controls = ARRAY_SIZE(rk_mc_controls),
164 };
165 
166 static int snd_rk_mc_probe(struct platform_device *pdev)
167 {
168         int ret = 0;
169         struct snd_soc_card *card = &snd_soc_card_rk;
170         struct device_node *np = pdev->dev.of_node;
171 
172         /* register the soc card */
173         card->dev = &pdev->dev;
174 
175         rk_dailink.codec_of_node = of_parse_phandle(np,
176                         "rockchip,audio-codec", 0);
177         if (!rk_dailink.codec_of_node) {
178                 dev_err(&pdev->dev,
179                         "Property 'rockchip,audio-codec' missing or invalid\n");
180                 return -EINVAL;
181         }
182 
183         rk_dailink.cpu_of_node = of_parse_phandle(np,
184                         "rockchip,i2s-controller", 0);
185         if (!rk_dailink.cpu_of_node) {
186                 dev_err(&pdev->dev,
187                         "Property 'rockchip,i2s-controller' missing or invalid\n");
188                 return -EINVAL;
189         }
190 
191         rk_dailink.platform_of_node = rk_dailink.cpu_of_node;
192 
193         ret = snd_soc_of_parse_card_name(card, "rockchip,model");
194         if (ret) {
195                 dev_err(&pdev->dev,
196                         "Soc parse card name failed %d\n", ret);
197                 return ret;
198         }
199 
200         ret = devm_snd_soc_register_card(&pdev->dev, card);
201         if (ret) {
202                 dev_err(&pdev->dev,
203                         "Soc register card failed %d\n", ret);
204                 return ret;
205         }
206 
207         return ret;
208 }
209 
210 static const struct of_device_id rockchip_rt5645_of_match[] = {
211         { .compatible = "rockchip,rockchip-audio-rt5645", },
212         {},
213 };
214 
215 MODULE_DEVICE_TABLE(of, rockchip_rt5645_of_match);
216 
217 static struct platform_driver snd_rk_mc_driver = {
218         .probe = snd_rk_mc_probe,
219         .driver = {
220                 .name = DRV_NAME,
221                 .pm = &snd_soc_pm_ops,
222                 .of_match_table = rockchip_rt5645_of_match,
223         },
224 };
225 
226 module_platform_driver(snd_rk_mc_driver);
227 
228 MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>");
229 MODULE_DESCRIPTION("Rockchip rt5645 machine ASoC driver");
230 MODULE_LICENSE("GPL v2");
231 MODULE_ALIAS("platform:" DRV_NAME);
232 

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