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_card
*card
= rtd
->card
;
55 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(card
);
59 srate
= params_rate(params
);
62 err
= tegra_asoc_utils_set_rate(&machine
->util_data
, srate
, mclk
);
64 dev_err(card
->dev
, "Can't configure clocks\n");
68 err
= snd_soc_dai_set_sysclk(codec_dai
, RT5640_SCLK_S_MCLK
, mclk
,
71 dev_err(card
->dev
, "codec_dai clock not set\n");
78 static struct snd_soc_ops tegra_rt5640_ops
= {
79 .hw_params
= tegra_rt5640_asoc_hw_params
,
82 static struct snd_soc_jack tegra_rt5640_hp_jack
;
84 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins
[] = {
87 .mask
= SND_JACK_HEADPHONE
,
91 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio
= {
92 .name
= "Headphone detection",
93 .report
= SND_JACK_HEADPHONE
,
98 static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets
[] = {
99 SND_SOC_DAPM_HP("Headphones", NULL
),
100 SND_SOC_DAPM_SPK("Speakers", NULL
),
101 SND_SOC_DAPM_MIC("Mic Jack", NULL
),
104 static const struct snd_kcontrol_new tegra_rt5640_controls
[] = {
105 SOC_DAPM_PIN_SWITCH("Speakers"),
108 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime
*rtd
)
110 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
111 struct snd_soc_codec
*codec
= codec_dai
->codec
;
112 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(rtd
->card
);
114 snd_soc_jack_new(codec
, "Headphones", SND_JACK_HEADPHONE
,
115 &tegra_rt5640_hp_jack
);
116 snd_soc_jack_add_pins(&tegra_rt5640_hp_jack
,
117 ARRAY_SIZE(tegra_rt5640_hp_jack_pins
),
118 tegra_rt5640_hp_jack_pins
);
120 if (gpio_is_valid(machine
->gpio_hp_det
)) {
121 tegra_rt5640_hp_jack_gpio
.gpio
= machine
->gpio_hp_det
;
122 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack
,
124 &tegra_rt5640_hp_jack_gpio
);
130 static int tegra_rt5640_card_remove(struct snd_soc_card
*card
)
132 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(card
);
134 if (gpio_is_valid(machine
->gpio_hp_det
)) {
135 snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack
, 1,
136 &tegra_rt5640_hp_jack_gpio
);
142 static struct snd_soc_dai_link tegra_rt5640_dai
= {
144 .stream_name
= "RT5640 PCM",
145 .codec_dai_name
= "rt5640-aif1",
146 .init
= tegra_rt5640_asoc_init
,
147 .ops
= &tegra_rt5640_ops
,
148 .dai_fmt
= SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
|
149 SND_SOC_DAIFMT_CBS_CFS
,
152 static struct snd_soc_card snd_soc_tegra_rt5640
= {
153 .name
= "tegra-rt5640",
154 .owner
= THIS_MODULE
,
155 .remove
= tegra_rt5640_card_remove
,
156 .dai_link
= &tegra_rt5640_dai
,
158 .controls
= tegra_rt5640_controls
,
159 .num_controls
= ARRAY_SIZE(tegra_rt5640_controls
),
160 .dapm_widgets
= tegra_rt5640_dapm_widgets
,
161 .num_dapm_widgets
= ARRAY_SIZE(tegra_rt5640_dapm_widgets
),
162 .fully_routed
= true,
165 static int tegra_rt5640_probe(struct platform_device
*pdev
)
167 struct device_node
*np
= pdev
->dev
.of_node
;
168 struct snd_soc_card
*card
= &snd_soc_tegra_rt5640
;
169 struct tegra_rt5640
*machine
;
172 machine
= devm_kzalloc(&pdev
->dev
,
173 sizeof(struct tegra_rt5640
), GFP_KERNEL
);
175 dev_err(&pdev
->dev
, "Can't allocate tegra_rt5640\n");
179 card
->dev
= &pdev
->dev
;
180 platform_set_drvdata(pdev
, card
);
181 snd_soc_card_set_drvdata(card
, machine
);
183 machine
->gpio_hp_det
= of_get_named_gpio(np
, "nvidia,hp-det-gpios", 0);
184 if (machine
->gpio_hp_det
== -EPROBE_DEFER
)
185 return -EPROBE_DEFER
;
187 ret
= snd_soc_of_parse_card_name(card
, "nvidia,model");
191 ret
= snd_soc_of_parse_audio_routing(card
, "nvidia,audio-routing");
195 tegra_rt5640_dai
.codec_of_node
= of_parse_phandle(np
,
196 "nvidia,audio-codec", 0);
197 if (!tegra_rt5640_dai
.codec_of_node
) {
199 "Property 'nvidia,audio-codec' missing or invalid\n");
204 tegra_rt5640_dai
.cpu_of_node
= of_parse_phandle(np
,
205 "nvidia,i2s-controller", 0);
206 if (!tegra_rt5640_dai
.cpu_of_node
) {
208 "Property 'nvidia,i2s-controller' missing or invalid\n");
213 tegra_rt5640_dai
.platform_of_node
= tegra_rt5640_dai
.cpu_of_node
;
215 ret
= tegra_asoc_utils_init(&machine
->util_data
, &pdev
->dev
);
219 ret
= snd_soc_register_card(card
);
221 dev_err(&pdev
->dev
, "snd_soc_register_card failed (%d)\n",
229 tegra_asoc_utils_fini(&machine
->util_data
);
234 static int tegra_rt5640_remove(struct platform_device
*pdev
)
236 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
237 struct tegra_rt5640
*machine
= snd_soc_card_get_drvdata(card
);
239 snd_soc_unregister_card(card
);
241 tegra_asoc_utils_fini(&machine
->util_data
);
246 static const struct of_device_id tegra_rt5640_of_match
[] = {
247 { .compatible
= "nvidia,tegra-audio-rt5640", },
251 static struct platform_driver tegra_rt5640_driver
= {
254 .owner
= THIS_MODULE
,
255 .pm
= &snd_soc_pm_ops
,
256 .of_match_table
= tegra_rt5640_of_match
,
258 .probe
= tegra_rt5640_probe
,
259 .remove
= tegra_rt5640_remove
,
261 module_platform_driver(tegra_rt5640_driver
);
263 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
264 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
265 MODULE_LICENSE("GPL v2");
266 MODULE_ALIAS("platform:" DRV_NAME
);
267 MODULE_DEVICE_TABLE(of
, tegra_rt5640_of_match
);