diff options
Diffstat (limited to 'kernel/sound/soc/rockchip/rockchip_rt5645.c')
| -rw-r--r-- | kernel/sound/soc/rockchip/rockchip_rt5645.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/kernel/sound/soc/rockchip/rockchip_rt5645.c b/kernel/sound/soc/rockchip/rockchip_rt5645.c new file mode 100644 index 000000000..68c62e4c2 --- /dev/null +++ b/kernel/sound/soc/rockchip/rockchip_rt5645.c @@ -0,0 +1,225 @@ +/* + * Rockchip machine ASoC driver for boards using a RT5645/RT5650 CODEC. + * + * Copyright (c) 2015, ROCKCHIP 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/>. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/of_gpio.h> +#include <linux/delay.h> +#include <sound/core.h> +#include <sound/jack.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include "rockchip_i2s.h" + +#define DRV_NAME "rockchip-snd-rt5645" + +static struct snd_soc_jack headset_jack; + +/* Jack detect via rt5645 driver. */ +extern int rt5645_set_jack_detect(struct snd_soc_codec *codec, + struct snd_soc_jack *hp_jack, struct snd_soc_jack *mic_jack, + struct snd_soc_jack *btn_jack); + +static const struct snd_soc_dapm_widget rk_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphones", NULL), + SND_SOC_DAPM_SPK("Speakers", NULL), + SND_SOC_DAPM_MIC("Headset Mic", NULL), + SND_SOC_DAPM_MIC("Int Mic", NULL), +}; + +static const struct snd_soc_dapm_route rk_audio_map[] = { + /* Input Lines */ + {"DMIC L2", NULL, "Int Mic"}, + {"DMIC R2", NULL, "Int Mic"}, + {"RECMIXL", NULL, "Headset Mic"}, + {"RECMIXR", NULL, "Headset Mic"}, + + /* Output Lines */ + {"Headphones", NULL, "HPOR"}, + {"Headphones", NULL, "HPOL"}, + {"Speakers", NULL, "SPOL"}, + {"Speakers", NULL, "SPOR"}, +}; + +static const struct snd_kcontrol_new rk_mc_controls[] = { + SOC_DAPM_PIN_SWITCH("Headphones"), + SOC_DAPM_PIN_SWITCH("Speakers"), + SOC_DAPM_PIN_SWITCH("Headset Mic"), + SOC_DAPM_PIN_SWITCH("Int Mic"), +}; + +static int rk_aif1_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + int ret = 0; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + int mclk; + + switch (params_rate(params)) { + case 8000: + case 16000: + case 48000: + case 96000: + mclk = 12288000; + break; + case 44100: + mclk = 11289600; + break; + default: + return -EINVAL; + } + + ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, + SND_SOC_CLOCK_OUT); + if (ret < 0) { + dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, + SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret); + return ret; + } + + return ret; +} + +static int rk_init(struct snd_soc_pcm_runtime *runtime) +{ + struct snd_soc_card *card = runtime->card; + int ret; + + /* Enable Headset and 4 Buttons Jack detection */ + ret = snd_soc_card_jack_new(card, "Headset Jack", + SND_JACK_HEADPHONE | SND_JACK_MICROPHONE | + SND_JACK_BTN_0 | SND_JACK_BTN_1 | + SND_JACK_BTN_2 | SND_JACK_BTN_3, + &headset_jack, NULL, 0); + if (ret) { + dev_err(card->dev, "New Headset Jack failed! (%d)\n", ret); + return ret; + } + + return rt5645_set_jack_detect(runtime->codec, + &headset_jack, + &headset_jack, + &headset_jack); +} + +static struct snd_soc_ops rk_aif1_ops = { + .hw_params = rk_aif1_hw_params, +}; + +static struct snd_soc_dai_link rk_dailink = { + .name = "rt5645", + .stream_name = "rt5645 PCM", + .codec_dai_name = "rt5645-aif1", + .init = rk_init, + .ops = &rk_aif1_ops, + /* set rt5645 as slave */ + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, +}; + +static struct snd_soc_card snd_soc_card_rk = { + .name = "I2S-RT5650", + .owner = THIS_MODULE, + .dai_link = &rk_dailink, + .num_links = 1, + .dapm_widgets = rk_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets), + .dapm_routes = rk_audio_map, + .num_dapm_routes = ARRAY_SIZE(rk_audio_map), + .controls = rk_mc_controls, + .num_controls = ARRAY_SIZE(rk_mc_controls), +}; + +static int snd_rk_mc_probe(struct platform_device *pdev) +{ + int ret = 0; + struct snd_soc_card *card = &snd_soc_card_rk; + struct device_node *np = pdev->dev.of_node; + + /* register the soc card */ + card->dev = &pdev->dev; + + rk_dailink.codec_of_node = of_parse_phandle(np, + "rockchip,audio-codec", 0); + if (!rk_dailink.codec_of_node) { + dev_err(&pdev->dev, + "Property 'rockchip,audio-codec' missing or invalid\n"); + return -EINVAL; + } + + rk_dailink.cpu_of_node = of_parse_phandle(np, + "rockchip,i2s-controller", 0); + if (!rk_dailink.cpu_of_node) { + dev_err(&pdev->dev, + "Property 'rockchip,i2s-controller' missing or invalid\n"); + return -EINVAL; + } + + rk_dailink.platform_of_node = rk_dailink.cpu_of_node; + + ret = snd_soc_of_parse_card_name(card, "rockchip,model"); + if (ret) { + dev_err(&pdev->dev, + "Soc parse card name failed %d\n", ret); + return ret; + } + + ret = devm_snd_soc_register_card(&pdev->dev, card); + if (ret) { + dev_err(&pdev->dev, + "Soc register card failed %d\n", ret); + return ret; + } + + return ret; +} + +static const struct of_device_id rockchip_rt5645_of_match[] = { + { .compatible = "rockchip,rockchip-audio-rt5645", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, rockchip_rt5645_of_match); + +static struct platform_driver snd_rk_mc_driver = { + .probe = snd_rk_mc_probe, + .driver = { + .name = DRV_NAME, + .pm = &snd_soc_pm_ops, + .of_match_table = rockchip_rt5645_of_match, + }, +}; + +module_platform_driver(snd_rk_mc_driver); + +MODULE_AUTHOR("Xing Zheng <zhengxing@rock-chips.com>"); +MODULE_DESCRIPTION("Rockchip rt5645 machine ASoC driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME); |