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 <linux/module.h>
28 #include <linux/of.h>
29 #include <linux/platform_device.h>
30 #include <linux/slab.h>
31
32 #include <sound/core.h>
33 #include <sound/jack.h>
34 #include <sound/pcm.h>
35 #include <sound/pcm_params.h>
36 #include <sound/soc.h>
37
38 #include "../codecs/tlv320aic23.h"
39
40 #include "tegra_asoc_utils.h"
41
42 #define DRV_NAME "tegra-snd-trimslice"
43
44 struct tegra_trimslice {
45 struct tegra_asoc_utils_data util_data;
46 };
47
trimslice_asoc_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)48 static int trimslice_asoc_hw_params(struct snd_pcm_substream *substream,
49 struct snd_pcm_hw_params *params)
50 {
51 struct snd_soc_pcm_runtime *rtd = substream->private_data;
52 struct snd_soc_dai *codec_dai = rtd->codec_dai;
53 struct snd_soc_card *card = rtd->card;
54 struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
55 int srate, mclk;
56 int err;
57
58 srate = params_rate(params);
59 mclk = 128 * srate;
60
61 err = tegra_asoc_utils_set_rate(&trimslice->util_data, srate, mclk);
62 if (err < 0) {
63 dev_err(card->dev, "Can't configure clocks\n");
64 return err;
65 }
66
67 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
68 SND_SOC_CLOCK_IN);
69 if (err < 0) {
70 dev_err(card->dev, "codec_dai clock not set\n");
71 return err;
72 }
73
74 return 0;
75 }
76
77 static struct snd_soc_ops trimslice_asoc_ops = {
78 .hw_params = trimslice_asoc_hw_params,
79 };
80
81 static const struct snd_soc_dapm_widget trimslice_dapm_widgets[] = {
82 SND_SOC_DAPM_HP("Line Out", NULL),
83 SND_SOC_DAPM_LINE("Line In", NULL),
84 };
85
86 static const struct snd_soc_dapm_route trimslice_audio_map[] = {
87 {"Line Out", NULL, "LOUT"},
88 {"Line Out", NULL, "ROUT"},
89
90 {"LLINEIN", NULL, "Line In"},
91 {"RLINEIN", NULL, "Line In"},
92 };
93
94 static struct snd_soc_dai_link trimslice_tlv320aic23_dai = {
95 .name = "TLV320AIC23",
96 .stream_name = "AIC23",
97 .codec_dai_name = "tlv320aic23-hifi",
98 .ops = &trimslice_asoc_ops,
99 .dai_fmt = SND_SOC_DAIFMT_I2S |
100 SND_SOC_DAIFMT_NB_NF |
101 SND_SOC_DAIFMT_CBS_CFS,
102 };
103
104 static struct snd_soc_card snd_soc_trimslice = {
105 .name = "tegra-trimslice",
106 .owner = THIS_MODULE,
107 .dai_link = &trimslice_tlv320aic23_dai,
108 .num_links = 1,
109
110 .dapm_widgets = trimslice_dapm_widgets,
111 .num_dapm_widgets = ARRAY_SIZE(trimslice_dapm_widgets),
112 .dapm_routes = trimslice_audio_map,
113 .num_dapm_routes = ARRAY_SIZE(trimslice_audio_map),
114 .fully_routed = true,
115 };
116
tegra_snd_trimslice_probe(struct platform_device * pdev)117 static int tegra_snd_trimslice_probe(struct platform_device *pdev)
118 {
119 struct device_node *np = pdev->dev.of_node;
120 struct snd_soc_card *card = &snd_soc_trimslice;
121 struct tegra_trimslice *trimslice;
122 int ret;
123
124 trimslice = devm_kzalloc(&pdev->dev, sizeof(struct tegra_trimslice),
125 GFP_KERNEL);
126 if (!trimslice) {
127 dev_err(&pdev->dev, "Can't allocate tegra_trimslice\n");
128 return -ENOMEM;
129 }
130
131 card->dev = &pdev->dev;
132 platform_set_drvdata(pdev, card);
133 snd_soc_card_set_drvdata(card, trimslice);
134
135 trimslice_tlv320aic23_dai.codec_of_node = of_parse_phandle(np,
136 "nvidia,audio-codec", 0);
137 if (!trimslice_tlv320aic23_dai.codec_of_node) {
138 dev_err(&pdev->dev,
139 "Property 'nvidia,audio-codec' missing or invalid\n");
140 ret = -EINVAL;
141 goto err;
142 }
143
144 trimslice_tlv320aic23_dai.cpu_of_node = of_parse_phandle(np,
145 "nvidia,i2s-controller", 0);
146 if (!trimslice_tlv320aic23_dai.cpu_of_node) {
147 dev_err(&pdev->dev,
148 "Property 'nvidia,i2s-controller' missing or invalid\n");
149 ret = -EINVAL;
150 goto err;
151 }
152
153 trimslice_tlv320aic23_dai.platform_of_node =
154 trimslice_tlv320aic23_dai.cpu_of_node;
155
156 ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev);
157 if (ret)
158 goto err;
159
160 ret = snd_soc_register_card(card);
161 if (ret) {
162 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
163 ret);
164 goto err_fini_utils;
165 }
166
167 return 0;
168
169 err_fini_utils:
170 tegra_asoc_utils_fini(&trimslice->util_data);
171 err:
172 return ret;
173 }
174
tegra_snd_trimslice_remove(struct platform_device * pdev)175 static int tegra_snd_trimslice_remove(struct platform_device *pdev)
176 {
177 struct snd_soc_card *card = platform_get_drvdata(pdev);
178 struct tegra_trimslice *trimslice = snd_soc_card_get_drvdata(card);
179
180 snd_soc_unregister_card(card);
181
182 tegra_asoc_utils_fini(&trimslice->util_data);
183
184 return 0;
185 }
186
187 static const struct of_device_id trimslice_of_match[] = {
188 { .compatible = "nvidia,tegra-audio-trimslice", },
189 {},
190 };
191 MODULE_DEVICE_TABLE(of, trimslice_of_match);
192
193 static struct platform_driver tegra_snd_trimslice_driver = {
194 .driver = {
195 .name = DRV_NAME,
196 .of_match_table = trimslice_of_match,
197 },
198 .probe = tegra_snd_trimslice_probe,
199 .remove = tegra_snd_trimslice_remove,
200 };
201 module_platform_driver(tegra_snd_trimslice_driver);
202
203 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
204 MODULE_DESCRIPTION("Trimslice machine ASoC driver");
205 MODULE_LICENSE("GPL");
206 MODULE_ALIAS("platform:" DRV_NAME);
207