2 * tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
4 * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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.
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
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/>.
18 * Based on code copyright/by:
20 * Copyright (C) 2010-2012 - NVIDIA, Inc.
21 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
22 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
23 * Copyright 2007 Wolfson Microelectronics PLC.
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
28 #include <linux/slab.h>
29 #include <linux/gpio.h>
30 #include <linux/of_gpio.h>
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>
38 #include "../codecs/rt5640.h"
40 #include "tegra_asoc_utils.h"
42 #define DRV_NAME "tegra-snd-rt5640"
45 struct tegra_asoc_utils_data util_data
;
49 static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream
*substream
,
50 struct snd_pcm_hw_params
*params
)
52 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
53 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
54 struct snd_soc_codec
*codec
= codec_dai
->codec
;
55 struct snd_soc_card
*card
= codec
->card
;
56 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(card
);
60 srate
= params_rate(params
);
63 err
= tegra_asoc_utils_set_rate(&machine
->util_data
, srate
, mclk
);
65 dev_err(card
->dev
, "Can't configure clocks\n");
69 err
= snd_soc_dai_set_sysclk(codec_dai
, RT5640_SCLK_S_MCLK
, mclk
,
72 dev_err(card
->dev
, "codec_dai clock not set\n");
79 static struct snd_soc_ops tegra_rt5640_ops
= {
80 .hw_params
= tegra_rt5640_asoc_hw_params
,
83 static struct snd_soc_jack tegra_rt5640_hp_jack
;
85 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins
[] = {
88 .mask
= SND_JACK_HEADPHONE
,
92 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio
= {
93 .name
= "Headphone detection",
94 .report
= SND_JACK_HEADPHONE
,
99 static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets
[] = {
100 SND_SOC_DAPM_HP("Headphones", NULL
),
101 SND_SOC_DAPM_SPK("Speakers", NULL
),
102 SND_SOC_DAPM_MIC("Mic Jack", NULL
),
105 static const struct snd_kcontrol_new tegra_rt5640_controls
[] = {
106 SOC_DAPM_PIN_SWITCH("Speakers"),
109 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime
*rtd
)
111 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
112 struct snd_soc_codec
*codec
= codec_dai
->codec
;
113 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(codec
->card
);
115 snd_soc_jack_new(codec
, "Headphones", SND_JACK_HEADPHONE
,
116 &tegra_rt5640_hp_jack
);
117 snd_soc_jack_add_pins(&tegra_rt5640_hp_jack
,
118 ARRAY_SIZE(tegra_rt5640_hp_jack_pins
),
119 tegra_rt5640_hp_jack_pins
);
121 if (gpio_is_valid(machine
->gpio_hp_det
)) {
122 tegra_rt5640_hp_jack_gpio
.gpio
= machine
->gpio_hp_det
;
123 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack
,
125 &tegra_rt5640_hp_jack_gpio
);
131 static int tegra_rt5640_card_remove(struct snd_soc_card
*card
)
133 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(card
);
135 if (gpio_is_valid(machine
->gpio_hp_det
)) {
136 snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack
, 1,
137 &tegra_rt5640_hp_jack_gpio
);
143 static struct snd_soc_dai_link tegra_rt5640_dai
= {
145 .stream_name
= "RT5640 PCM",
146 .codec_dai_name
= "rt5640-aif1",
147 .init
= tegra_rt5640_asoc_init
,
148 .ops
= &tegra_rt5640_ops
,
149 .dai_fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
|
150 SND_SOC_DAIFMT_CBS_CFS
,
153 static struct snd_soc_card snd_soc_tegra_rt5640
= {
154 .name
= "tegra-rt5640",
155 .owner
= THIS_MODULE
,
156 .remove
= tegra_rt5640_card_remove
,
157 .dai_link
= &tegra_rt5640_dai
,
159 .controls
= tegra_rt5640_controls
,
160 .num_controls
= ARRAY_SIZE(tegra_rt5640_controls
),
161 .dapm_widgets
= tegra_rt5640_dapm_widgets
,
162 .num_dapm_widgets
= ARRAY_SIZE(tegra_rt5640_dapm_widgets
),
163 .fully_routed
= true,
166 static int tegra_rt5640_probe(struct platform_device
*pdev
)
168 struct device_node
*np
= pdev
->dev
.of_node
;
169 struct snd_soc_card
*card
= &snd_soc_tegra_rt5640
;
170 struct tegra_rt5640
*machine
;
173 machine
= devm_kzalloc(&pdev
->dev
,
174 sizeof(struct tegra_rt5640
), GFP_KERNEL
);
176 dev_err(&pdev
->dev
, "Can't allocate tegra_rt5640\n");
180 card
->dev
= &pdev
->dev
;
181 platform_set_drvdata(pdev
, card
);
182 snd_soc_card_set_drvdata(card
, machine
);
184 machine
->gpio_hp_det
= of_get_named_gpio(np
, "nvidia,hp-det-gpios", 0);
185 if (machine
->gpio_hp_det
== -EPROBE_DEFER
)
186 return -EPROBE_DEFER
;
188 ret
= snd_soc_of_parse_card_name(card
, "nvidia,model");
192 ret
= snd_soc_of_parse_audio_routing(card
, "nvidia,audio-routing");
196 tegra_rt5640_dai
.codec_of_node
= of_parse_phandle(np
,
197 "nvidia,audio-codec", 0);
198 if (!tegra_rt5640_dai
.codec_of_node
) {
200 "Property 'nvidia,audio-codec' missing or invalid\n");
205 tegra_rt5640_dai
.cpu_of_node
= of_parse_phandle(np
,
206 "nvidia,i2s-controller", 0);
207 if (!tegra_rt5640_dai
.cpu_of_node
) {
209 "Property 'nvidia,i2s-controller' missing or invalid\n");
214 tegra_rt5640_dai
.platform_of_node
= tegra_rt5640_dai
.cpu_of_node
;
216 ret
= tegra_asoc_utils_init(&machine
->util_data
, &pdev
->dev
);
220 ret
= snd_soc_register_card(card
);
222 dev_err(&pdev
->dev
, "snd_soc_register_card failed (%d)\n",
230 tegra_asoc_utils_fini(&machine
->util_data
);
235 static int tegra_rt5640_remove(struct platform_device
*pdev
)
237 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
238 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(card
);
240 snd_soc_unregister_card(card
);
242 tegra_asoc_utils_fini(&machine
->util_data
);
247 static const struct of_device_id tegra_rt5640_of_match
[] = {
248 { .compatible
= "nvidia,tegra-audio-rt5640", },
252 static struct platform_driver tegra_rt5640_driver
= {
255 .owner
= THIS_MODULE
,
256 .pm
= &snd_soc_pm_ops
,
257 .of_match_table
= tegra_rt5640_of_match
,
259 .probe
= tegra_rt5640_probe
,
260 .remove
= tegra_rt5640_remove
,
262 module_platform_driver(tegra_rt5640_driver
);
264 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
265 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
266 MODULE_LICENSE("GPL v2");
267 MODULE_ALIAS("platform:" DRV_NAME
);
268 MODULE_DEVICE_TABLE(of
, tegra_rt5640_of_match
);