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e4eabf75ad
linux/sound/soc/tegra/tegra_max98090.c
Donglin Peng e4eabf75ad ASoC: tegra: Remove unnecessary function call 
First of all,the address of pdev->dev is assigned to card->dev,then
the function platform_set_drvdata copies the value the variable card
to pdev->dev.driver_data, but when calling snd_soc_register_card,the
function dev_set_drvdata(card->dev, card) will also do the same copy
operation,so i think that the former copy operation can be removed.

Signed-off-by: Peng Donglin <dolinux.peng@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-08-21 18:15:57 +01:00

323 lines
8.2 KiB
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/*
* Tegra machine ASoC driver for boards using a MAX90809 CODEC.
*
* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Based on code copyright/by:
*
* Copyright (C) 2010-2012 - NVIDIA, Inc.
* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
* Copyright 2007 Wolfson Microelectronics PLC.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "tegra_asoc_utils.h"
#define DRV_NAME "tegra-snd-max98090"
struct tegra_max98090 {
struct tegra_asoc_utils_data util_data;
int gpio_hp_det;
int gpio_mic_det;
};
static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_card *card = rtd->card;
struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
int srate, mclk;
int err;
srate = params_rate(params);
switch (srate) {
case 8000:
case 16000:
case 24000:
case 32000:
case 48000:
case 64000:
case 96000:
mclk = 12288000;
break;
case 11025:
case 22050:
case 44100:
case 88200:
mclk = 11289600;
break;
default:
mclk = 12000000;
break;
}
err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
if (err < 0) {
dev_err(card->dev, "Can't configure clocks\n");
return err;
}
err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev, "codec_dai clock not set\n");
return err;
}
return 0;
}
static const struct snd_soc_ops tegra_max98090_ops = {
.hw_params = tegra_max98090_asoc_hw_params,
};
static struct snd_soc_jack tegra_max98090_hp_jack;
static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
{
.pin = "Headphones",
.mask = SND_JACK_HEADPHONE,
},
};
static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
.name = "Headphone detection",
.report = SND_JACK_HEADPHONE,
.debounce_time = 150,
.invert = 1,
};
static struct snd_soc_jack tegra_max98090_mic_jack;
static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
{
.pin = "Mic Jack",
.mask = SND_JACK_MICROPHONE,
},
};
static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
.name = "Mic detection",
.report = SND_JACK_MICROPHONE,
.debounce_time = 150,
.invert = 1,
};
static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphones", NULL),
SND_SOC_DAPM_SPK("Speakers", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_MIC("Int Mic", NULL),
};
static const struct snd_kcontrol_new tegra_max98090_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphones"),
SOC_DAPM_PIN_SWITCH("Speakers"),
SOC_DAPM_PIN_SWITCH("Mic Jack"),
SOC_DAPM_PIN_SWITCH("Int Mic"),
};
static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
{
struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
if (gpio_is_valid(machine->gpio_hp_det)) {
snd_soc_card_jack_new(rtd->card, "Headphones",
SND_JACK_HEADPHONE,
&tegra_max98090_hp_jack,
tegra_max98090_hp_jack_pins,
ARRAY_SIZE(tegra_max98090_hp_jack_pins));
tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
1,
&tegra_max98090_hp_jack_gpio);
}
if (gpio_is_valid(machine->gpio_mic_det)) {
snd_soc_card_jack_new(rtd->card, "Mic Jack",
SND_JACK_MICROPHONE,
&tegra_max98090_mic_jack,
tegra_max98090_mic_jack_pins,
ARRAY_SIZE(tegra_max98090_mic_jack_pins));
tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
1,
&tegra_max98090_mic_jack_gpio);
}
return 0;
}
static int tegra_max98090_card_remove(struct snd_soc_card *card)
{
struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
if (gpio_is_valid(machine->gpio_hp_det)) {
snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
&tegra_max98090_hp_jack_gpio);
}
if (gpio_is_valid(machine->gpio_mic_det)) {
snd_soc_jack_free_gpios(&tegra_max98090_mic_jack, 1,
&tegra_max98090_mic_jack_gpio);
}
return 0;
}
static struct snd_soc_dai_link tegra_max98090_dai = {
.name = "max98090",
.stream_name = "max98090 PCM",
.codec_dai_name = "HiFi",
.init = tegra_max98090_asoc_init,
.ops = &tegra_max98090_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
};
static struct snd_soc_card snd_soc_tegra_max98090 = {
.name = "tegra-max98090",
.owner = THIS_MODULE,
.remove = tegra_max98090_card_remove,
.dai_link = &tegra_max98090_dai,
.num_links = 1,
.controls = tegra_max98090_controls,
.num_controls = ARRAY_SIZE(tegra_max98090_controls),
.dapm_widgets = tegra_max98090_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
.fully_routed = true,
};
static int tegra_max98090_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &snd_soc_tegra_max98090;
struct tegra_max98090 *machine;
int ret;
machine = devm_kzalloc(&pdev->dev,
sizeof(struct tegra_max98090), GFP_KERNEL);
if (!machine)
return -ENOMEM;
card->dev = &pdev->dev;
snd_soc_card_set_drvdata(card, machine);
machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
if (machine->gpio_hp_det == -EPROBE_DEFER)
return -EPROBE_DEFER;
machine->gpio_mic_det =
of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
if (machine->gpio_mic_det == -EPROBE_DEFER)
return -EPROBE_DEFER;
ret = snd_soc_of_parse_card_name(card, "nvidia,model");
if (ret)
goto err;
ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
if (ret)
goto err;
tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
"nvidia,audio-codec", 0);
if (!tegra_max98090_dai.codec_of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,audio-codec' missing or invalid\n");
ret = -EINVAL;
goto err;
}
tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
"nvidia,i2s-controller", 0);
if (!tegra_max98090_dai.cpu_of_node) {
dev_err(&pdev->dev,
"Property 'nvidia,i2s-controller' missing or invalid\n");
ret = -EINVAL;
goto err;
}
tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
if (ret)
goto err;
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
goto err_fini_utils;
}
return 0;
err_fini_utils:
tegra_asoc_utils_fini(&machine->util_data);
err:
return ret;
}
static int tegra_max98090_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
snd_soc_unregister_card(card);
tegra_asoc_utils_fini(&machine->util_data);
return 0;
}
static const struct of_device_id tegra_max98090_of_match[] = {
{ .compatible = "nvidia,tegra-audio-max98090", },
{},
};
static struct platform_driver tegra_max98090_driver = {
.driver = {
.name = DRV_NAME,
.pm = &snd_soc_pm_ops,
.of_match_table = tegra_max98090_of_match,
},
.probe = tegra_max98090_probe,
.remove = tegra_max98090_remove,
};
module_platform_driver(tegra_max98090_driver);
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
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