diff options
Diffstat (limited to 'kernel/sound/soc/samsung/smdk_wm8994.c')
| -rw-r--r-- | kernel/sound/soc/samsung/smdk_wm8994.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/kernel/sound/soc/samsung/smdk_wm8994.c b/kernel/sound/soc/samsung/smdk_wm8994.c new file mode 100644 index 000000000..d38595fbd --- /dev/null +++ b/kernel/sound/soc/samsung/smdk_wm8994.c @@ -0,0 +1,204 @@ +/* + * smdk_wm8994.c + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include "../codecs/wm8994.h" +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> + + /* + * Default CFG switch settings to use this driver: + * SMDKV310: CFG5-1000, CFG7-111111 + */ + + /* + * Configure audio route as :- + * $ amixer sset 'DAC1' on,on + * $ amixer sset 'Right Headphone Mux' 'DAC' + * $ amixer sset 'Left Headphone Mux' 'DAC' + * $ amixer sset 'DAC1R Mixer AIF1.1' on + * $ amixer sset 'DAC1L Mixer AIF1.1' on + * $ amixer sset 'IN2L' on + * $ amixer sset 'IN2L PGA IN2LN' on + * $ amixer sset 'MIXINL IN2L' on + * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on + * $ amixer sset 'IN2R' on + * $ amixer sset 'IN2R PGA IN2RN' on + * $ amixer sset 'MIXINR IN2R' on + * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on + */ + +/* SMDK has a 16.934MHZ crystal attached to WM8994 */ +#define SMDK_WM8994_FREQ 16934000 + +struct smdk_wm8994_data { + int mclk1_rate; +}; + +/* Default SMDKs */ +static struct smdk_wm8994_data smdk_board_data = { + .mclk1_rate = SMDK_WM8994_FREQ, +}; + +static int smdk_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; + unsigned int pll_out; + int ret; + + /* AIF1CLK should be >=3MHz for optimal performance */ + if (params_width(params) == 24) + pll_out = params_rate(params) * 384; + else if (params_rate(params) == 8000 || params_rate(params) == 11025) + pll_out = params_rate(params) * 512; + else + pll_out = params_rate(params) * 256; + + ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, + SMDK_WM8994_FREQ, pll_out); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, + pll_out, SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + return 0; +} + +/* + * SMDK WM8994 DAI operations. + */ +static struct snd_soc_ops smdk_ops = { + .hw_params = smdk_hw_params, +}; + +static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_dapm_context *dapm = &codec->dapm; + + /* Other pins NC */ + snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); + snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); + snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); + snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); + snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); + snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); + snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); + snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); + snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); + snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); + snd_soc_dapm_nc_pin(dapm, "IN1LP"); + snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); + snd_soc_dapm_nc_pin(dapm, "IN1RP"); + snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); + + return 0; +} + +static struct snd_soc_dai_link smdk_dai[] = { + { /* Primary DAI i/f */ + .name = "WM8994 AIF1", + .stream_name = "Pri_Dai", + .cpu_dai_name = "samsung-i2s.0", + .codec_dai_name = "wm8994-aif1", + .platform_name = "samsung-i2s.0", + .codec_name = "wm8994-codec", + .init = smdk_wm8994_init_paiftx, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + .ops = &smdk_ops, + }, { /* Sec_Fifo Playback i/f */ + .name = "Sec_FIFO TX", + .stream_name = "Sec_Dai", + .cpu_dai_name = "samsung-i2s-sec", + .codec_dai_name = "wm8994-aif1", + .platform_name = "samsung-i2s-sec", + .codec_name = "wm8994-codec", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + .ops = &smdk_ops, + }, +}; + +static struct snd_soc_card smdk = { + .name = "SMDK-I2S", + .owner = THIS_MODULE, + .dai_link = smdk_dai, + .num_links = ARRAY_SIZE(smdk_dai), +}; + +static const struct of_device_id samsung_wm8994_of_match[] = { + { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data }, + {}, +}; +MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); + +static int smdk_audio_probe(struct platform_device *pdev) +{ + int ret; + struct device_node *np = pdev->dev.of_node; + struct snd_soc_card *card = &smdk; + struct smdk_wm8994_data *board; + const struct of_device_id *id; + + card->dev = &pdev->dev; + + board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL); + if (!board) + return -ENOMEM; + + if (np) { + smdk_dai[0].cpu_dai_name = NULL; + smdk_dai[0].cpu_of_node = of_parse_phandle(np, + "samsung,i2s-controller", 0); + if (!smdk_dai[0].cpu_of_node) { + dev_err(&pdev->dev, + "Property 'samsung,i2s-controller' missing or invalid\n"); + ret = -EINVAL; + } + + smdk_dai[0].platform_name = NULL; + smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node; + } + + id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev); + if (id) + *board = *((struct smdk_wm8994_data *)id->data); + + platform_set_drvdata(pdev, board); + + ret = devm_snd_soc_register_card(&pdev->dev, card); + + if (ret) + dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); + + return ret; +} + +static struct platform_driver smdk_audio_driver = { + .driver = { + .name = "smdk-audio-wm8994", + .of_match_table = of_match_ptr(samsung_wm8994_of_match), + .pm = &snd_soc_pm_ops, + }, + .probe = smdk_audio_probe, +}; + +module_platform_driver(smdk_audio_driver); + +MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:smdk-audio-wm8994"); |