2 * tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec.
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010-2012 - NVIDIA, Inc.
7 * Based on code copyright/by:
9 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
11 * Copyright 2007 Wolfson Microelectronics PLC.
12 * Author: Graeme Gregory
13 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * version 2 as published by the Free Software Foundation.
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
31 #include <asm/mach-types.h>
33 #include <linux/module.h>
34 #include <linux/platform_device.h>
35 #include <linux/slab.h>
36 #include <linux/gpio.h>
37 #include <linux/of_gpio.h>
39 #include <sound/core.h>
40 #include <sound/jack.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
45 #include "../codecs/wm8753.h"
47 #include "tegra_asoc_utils.h"
49 #define DRV_NAME "tegra-snd-wm8753"
52 struct tegra_asoc_utils_data util_data
;
55 static int tegra_wm8753_hw_params(struct snd_pcm_substream
*substream
,
56 struct snd_pcm_hw_params
*params
)
58 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
59 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
60 struct snd_soc_codec
*codec
= codec_dai
->codec
;
61 struct snd_soc_card
*card
= codec
->card
;
62 struct tegra_wm8753
*machine
= snd_soc_card_get_drvdata(card
);
66 srate
= params_rate(params
);
79 err
= tegra_asoc_utils_set_rate(&machine
->util_data
, srate
, mclk
);
81 dev_err(card
->dev
, "Can't configure clocks\n");
85 err
= snd_soc_dai_set_sysclk(codec_dai
, WM8753_MCLK
, mclk
,
88 dev_err(card
->dev
, "codec_dai clock not set\n");
95 static struct snd_soc_ops tegra_wm8753_ops
= {
96 .hw_params
= tegra_wm8753_hw_params
,
99 static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets
[] = {
100 SND_SOC_DAPM_HP("Headphone Jack", NULL
),
101 SND_SOC_DAPM_MIC("Mic Jack", NULL
),
104 static struct snd_soc_dai_link tegra_wm8753_dai
= {
106 .stream_name
= "WM8753 PCM",
107 .codec_dai_name
= "wm8753-hifi",
108 .ops
= &tegra_wm8753_ops
,
109 .dai_fmt
= SND_SOC_DAIFMT_I2S
|
110 SND_SOC_DAIFMT_NB_NF
|
111 SND_SOC_DAIFMT_CBS_CFS
,
114 static struct snd_soc_card snd_soc_tegra_wm8753
= {
115 .name
= "tegra-wm8753",
116 .owner
= THIS_MODULE
,
117 .dai_link
= &tegra_wm8753_dai
,
120 .dapm_widgets
= tegra_wm8753_dapm_widgets
,
121 .num_dapm_widgets
= ARRAY_SIZE(tegra_wm8753_dapm_widgets
),
122 .fully_routed
= true,
125 static int tegra_wm8753_driver_probe(struct platform_device
*pdev
)
127 struct device_node
*np
= pdev
->dev
.of_node
;
128 struct snd_soc_card
*card
= &snd_soc_tegra_wm8753
;
129 struct tegra_wm8753
*machine
;
132 machine
= devm_kzalloc(&pdev
->dev
, sizeof(struct tegra_wm8753
),
135 dev_err(&pdev
->dev
, "Can't allocate tegra_wm8753 struct\n");
139 card
->dev
= &pdev
->dev
;
140 platform_set_drvdata(pdev
, card
);
141 snd_soc_card_set_drvdata(card
, machine
);
143 ret
= snd_soc_of_parse_card_name(card
, "nvidia,model");
147 ret
= snd_soc_of_parse_audio_routing(card
, "nvidia,audio-routing");
151 tegra_wm8753_dai
.codec_of_node
= of_parse_phandle(np
,
152 "nvidia,audio-codec", 0);
153 if (!tegra_wm8753_dai
.codec_of_node
) {
155 "Property 'nvidia,audio-codec' missing or invalid\n");
160 tegra_wm8753_dai
.cpu_of_node
= of_parse_phandle(np
,
161 "nvidia,i2s-controller", 0);
162 if (!tegra_wm8753_dai
.cpu_of_node
) {
164 "Property 'nvidia,i2s-controller' missing or invalid\n");
169 tegra_wm8753_dai
.platform_of_node
= tegra_wm8753_dai
.cpu_of_node
;
171 ret
= tegra_asoc_utils_init(&machine
->util_data
, &pdev
->dev
);
175 ret
= snd_soc_register_card(card
);
177 dev_err(&pdev
->dev
, "snd_soc_register_card failed (%d)\n",
185 tegra_asoc_utils_fini(&machine
->util_data
);
190 static int tegra_wm8753_driver_remove(struct platform_device
*pdev
)
192 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
193 struct tegra_wm8753
*machine
= snd_soc_card_get_drvdata(card
);
195 snd_soc_unregister_card(card
);
197 tegra_asoc_utils_fini(&machine
->util_data
);
202 static const struct of_device_id tegra_wm8753_of_match
[] = {
203 { .compatible
= "nvidia,tegra-audio-wm8753", },
207 static struct platform_driver tegra_wm8753_driver
= {
210 .owner
= THIS_MODULE
,
211 .pm
= &snd_soc_pm_ops
,
212 .of_match_table
= tegra_wm8753_of_match
,
214 .probe
= tegra_wm8753_driver_probe
,
215 .remove
= tegra_wm8753_driver_remove
,
217 module_platform_driver(tegra_wm8753_driver
);
219 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
220 MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver");
221 MODULE_LICENSE("GPL");
222 MODULE_ALIAS("platform:" DRV_NAME
);
223 MODULE_DEVICE_TABLE(of
, tegra_wm8753_of_match
);