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
 44struct tegra_trimslice {
 45	struct tegra_asoc_utils_data util_data;
 46};
 47
 48static 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
 77static struct snd_soc_ops trimslice_asoc_ops = {
 78	.hw_params = trimslice_asoc_hw_params,
 79};
 80
 81static 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
 86static 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
 94static 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
104static 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
117static 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
169err_fini_utils:
170	tegra_asoc_utils_fini(&trimslice->util_data);
171err:
172	return ret;
173}
174
175static 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
187static const struct of_device_id trimslice_of_match[] = {
188	{ .compatible = "nvidia,tegra-audio-trimslice", },
189	{},
190};
191MODULE_DEVICE_TABLE(of, trimslice_of_match);
192
193static 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};
201module_platform_driver(tegra_snd_trimslice_driver);
202
203MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
204MODULE_DESCRIPTION("Trimslice machine ASoC driver");
205MODULE_LICENSE("GPL");
206MODULE_ALIAS("platform:" DRV_NAME);