1 /*
2 * trimslice.c - TrimSlice machine ASoC driver
3 *
4 * Copyright (C) 2011 - CompuLab, Ltd.
5 * Author: Mike Rapoport <mike@compulab.co.il>
6 *
7 * Based on code copyright/by:
8 * Author: Stephen Warren <swarren@nvidia.com>
9 * Copyright (C) 2010-2011 - NVIDIA, Inc.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * version 2 as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
23 * 02110-1301 USA
24 *
25 */
26
27 #include <asm/mach-types.h>
28
29 #include <linux/module.h>
30 #include <linux/platform_device.h>
31 #include <linux/slab.h>
32
33 #include <sound/core.h>
34 #include <sound/jack.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38
39 #include "../codecs/tlv320aic23.h"
40
41 #include "tegra_das.h"
42 #include "tegra_i2s.h"
43 #include "tegra_pcm.h"
44 #include "tegra_asoc_utils.h"
45
46 #define DRV_NAME "tegra-snd-trimslice"
47
48 struct tegra_trimslice {
49 struct tegra_asoc_utils_data util_data;
50 };
51
trimslice_asoc_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)52 static int trimslice_asoc_hw_params(struct snd_pcm_substream *substream,
53 struct snd_pcm_hw_params *params)
54 {
55 struct snd_soc_pcm_runtime *rtd = substream->private_data;
56 struct snd_soc_dai *codec_dai = rtd->codec_dai;
57 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
58 struct snd_soc_codec *codec = rtd->codec;
59 struct snd_soc_card *card = codec->card;
60 struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
61 int srate, mclk;
62 int err;
63
64 srate = params_rate(params);
65 mclk = 128 * srate;
66
67 err = tegra_asoc_utils_set_rate(&trimslice->util_data, srate, mclk);
68 if (err < 0) {
69 dev_err(card->dev, "Can't configure clocks\n");
70 return err;
71 }
72
73 err = snd_soc_dai_set_fmt(codec_dai,
74 SND_SOC_DAIFMT_I2S |
75 SND_SOC_DAIFMT_NB_NF |
76 SND_SOC_DAIFMT_CBS_CFS);
77 if (err < 0) {
78 dev_err(card->dev, "codec_dai fmt not set\n");
79 return err;
80 }
81
82 err = snd_soc_dai_set_fmt(cpu_dai,
83 SND_SOC_DAIFMT_I2S |
84 SND_SOC_DAIFMT_NB_NF |
85 SND_SOC_DAIFMT_CBS_CFS);
86 if (err < 0) {
87 dev_err(card->dev, "cpu_dai fmt not set\n");
88 return err;
89 }
90
91 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
92 SND_SOC_CLOCK_IN);
93 if (err < 0) {
94 dev_err(card->dev, "codec_dai clock not set\n");
95 return err;
96 }
97
98 return 0;
99 }
100
101 static struct snd_soc_ops trimslice_asoc_ops = {
102 .hw_params = trimslice_asoc_hw_params,
103 };
104
105 static const struct snd_soc_dapm_widget trimslice_dapm_widgets[] = {
106 SND_SOC_DAPM_HP("Line Out", NULL),
107 SND_SOC_DAPM_LINE("Line In", NULL),
108 };
109
110 static const struct snd_soc_dapm_route trimslice_audio_map[] = {
111 {"Line Out", NULL, "LOUT"},
112 {"Line Out", NULL, "ROUT"},
113
114 {"LLINEIN", NULL, "Line In"},
115 {"RLINEIN", NULL, "Line In"},
116 };
117
118 static struct snd_soc_dai_link trimslice_tlv320aic23_dai = {
119 .name = "TLV320AIC23",
120 .stream_name = "AIC23",
121 .codec_name = "tlv320aic23-codec.2-001a",
122 .platform_name = "tegra-pcm-audio",
123 .cpu_dai_name = "tegra-i2s.0",
124 .codec_dai_name = "tlv320aic23-hifi",
125 .ops = &trimslice_asoc_ops,
126 };
127
128 static struct snd_soc_card snd_soc_trimslice = {
129 .name = "tegra-trimslice",
130 .owner = THIS_MODULE,
131 .dai_link = &trimslice_tlv320aic23_dai,
132 .num_links = 1,
133
134 .dapm_widgets = trimslice_dapm_widgets,
135 .num_dapm_widgets = ARRAY_SIZE(trimslice_dapm_widgets),
136 .dapm_routes = trimslice_audio_map,
137 .num_dapm_routes = ARRAY_SIZE(trimslice_audio_map),
138 .fully_routed = true,
139 };
140
tegra_snd_trimslice_probe(struct platform_device * pdev)141 static __devinit int tegra_snd_trimslice_probe(struct platform_device *pdev)
142 {
143 struct snd_soc_card *card = &snd_soc_trimslice;
144 struct tegra_trimslice *trimslice;
145 int ret;
146
147 trimslice = devm_kzalloc(&pdev->dev, sizeof(struct tegra_trimslice),
148 GFP_KERNEL);
149 if (!trimslice) {
150 dev_err(&pdev->dev, "Can't allocate tegra_trimslice\n");
151 ret = -ENOMEM;
152 goto err;
153 }
154
155 ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev);
156 if (ret)
157 goto err;
158
159 card->dev = &pdev->dev;
160 platform_set_drvdata(pdev, card);
161 snd_soc_card_set_drvdata(card, trimslice);
162
163 ret = snd_soc_register_card(card);
164 if (ret) {
165 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
166 ret);
167 goto err_fini_utils;
168 }
169
170 return 0;
171
172 err_fini_utils:
173 tegra_asoc_utils_fini(&trimslice->util_data);
174 err:
175 return ret;
176 }
177
tegra_snd_trimslice_remove(struct platform_device * pdev)178 static int __devexit tegra_snd_trimslice_remove(struct platform_device *pdev)
179 {
180 struct snd_soc_card *card = platform_get_drvdata(pdev);
181 struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
182
183 snd_soc_unregister_card(card);
184
185 tegra_asoc_utils_fini(&trimslice->util_data);
186
187 return 0;
188 }
189
190 static struct platform_driver tegra_snd_trimslice_driver = {
191 .driver = {
192 .name = DRV_NAME,
193 .owner = THIS_MODULE,
194 },
195 .probe = tegra_snd_trimslice_probe,
196 .remove = __devexit_p(tegra_snd_trimslice_remove),
197 };
198 module_platform_driver(tegra_snd_trimslice_driver);
199
200 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
201 MODULE_DESCRIPTION("Trimslice machine ASoC driver");
202 MODULE_LICENSE("GPL");
203 MODULE_ALIAS("platform:" DRV_NAME);
204