This patch add the sound machine driver for Trats2 board. The codec operate in master mode. So, Reference to the codec master clock must be defined in DT.

Signed-off-by: Inha Song ideal.song@samsung.com --- sound/soc/samsung/Kconfig | 8 ++ sound/soc/samsung/Makefile | 2 + sound/soc/samsung/trats2_wm1811.c | 216 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 226 insertions(+) create mode 100644 sound/soc/samsung/trats2_wm1811.c

diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig index fc67f97..8031423 100644 --- a/sound/soc/samsung/Kconfig +++ b/sound/soc/samsung/Kconfig @@ -245,3 +245,11 @@ config SND_SOC_ARNDALE_RT5631_ALC5631 depends on SND_SOC_SAMSUNG select SND_SAMSUNG_I2S select SND_SOC_RT5631 + +config SND_SOC_SAMSUNG_TRATS2_WM1811 + tristate "SoC I2S Audio support for WM1811 on Tizen Trats2 board" + depends on SND_SOC_SAMSUNG + select SND_SOC_WM8994 + select SND_SAMSUNG_I2S + help + Say Y if you want to add support for SoC audio on the Tizen Trats2 board. diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile index 31e3dba..e2b7b1b 100644 --- a/sound/soc/samsung/Makefile +++ b/sound/soc/samsung/Makefile @@ -46,6 +46,7 @@ snd-soc-littlemill-objs := littlemill.o snd-soc-bells-objs := bells.o snd-soc-odroidx2-max98090-objs := odroidx2_max98090.o snd-soc-arndale-rt5631-objs := arndale_rt5631.o +snd-soc-trats2-wm1811-objs := trats2_wm1811.o

obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o @@ -73,3 +74,4 @@ obj-$(CONFIG_SND_SOC_LITTLEMILL) += snd-soc-littlemill.o obj-$(CONFIG_SND_SOC_BELLS) += snd-soc-bells.o obj-$(CONFIG_SND_SOC_ODROIDX2) += snd-soc-odroidx2-max98090.o obj-$(CONFIG_SND_SOC_ARNDALE_RT5631_ALC5631) += snd-soc-arndale-rt5631.o +obj-$(CONFIG_SND_SOC_SAMSUNG_TRATS2_WM1811) += snd-soc-trats2-wm1811.o diff --git a/sound/soc/samsung/trats2_wm1811.c b/sound/soc/samsung/trats2_wm1811.c new file mode 100644 index 0000000..fc96842 --- /dev/null +++ b/sound/soc/samsung/trats2_wm1811.c @@ -0,0 +1,216 @@ +/* + * Copyright (C) 2015 Samsung Electronics Co., Ltd. + * + * 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 <linux/of.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <sound/soc.h> +#include <sound/pcm_params.h> +#include "i2s.h" +#include "i2s-regs.h" +#include "../codecs/wm8994.h" + +struct trats2_machine_priv { + struct clk *clk_mclk; +}; + +static struct trats2_machine_priv trats2_wm1811_priv; + +static const struct snd_kcontrol_new trats2_controls[] = { + SOC_DAPM_PIN_SWITCH("SPK"), +}; + +const struct snd_soc_dapm_widget trats2_dapm_widgets[] = { + SND_SOC_DAPM_SPK("SPK", NULL), +}; + +static int trats2_aif1_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 *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct trats2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card); + unsigned int sysclk_rate; + unsigned int mclk_rate = + (unsigned int)clk_get_rate(priv->clk_mclk); + int ret; + + /* Set the codec DAI configuration to Master*/ + ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S + | SND_SOC_DAIFMT_NB_NF + | SND_SOC_DAIFMT_CBM_CFM); + if (ret < 0) { + dev_err(codec_dai->dev, + "Failed to set codec dai format: %d\n", ret); + return ret; + } + + /* Set the cpu DAI configuration to Slave */ + ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S + | SND_SOC_DAIFMT_NB_NF + | SND_SOC_DAIFMT_CBM_CFM); + if (ret < 0) { + dev_err(cpu_dai->dev, + "Failed to set cpu dai format: %d\n", ret); + return ret; + } + + /* SYSCLK must be greater than 4.096MHz */ + if (params_rate(params) == 8000 || params_rate(params) == 11025) + sysclk_rate = params_rate(params) * 512; + else + sysclk_rate = params_rate(params) * 256; + + /* Set the codec FLL1 */ + ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, + mclk_rate, sysclk_rate); + if (ret < 0) { + dev_err(codec_dai->dev, "Failed to set FLL1: %d\n", ret); + return ret; + } + + /* Set the codec SYSCLK */ + ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, + sysclk_rate, SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(codec_dai->dev, "Failed to set SYSCLK: %d\n", ret); + return ret; + } + + /* Set i2s OPCLK */ + ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK, + 0, MOD_OPCLK_PCLK); + if (ret < 0) { + dev_err(cpu_dai->dev, + "Failed to set i2s opclk: %d\n", ret); + return ret; + } + + return 0; +} + +static struct snd_soc_ops trats2_aif1_ops = { + .hw_params = trats2_aif1_hw_params, +}; + +static int trats2_init_paiftx(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_card *card = rtd->card; + struct trats2_machine_priv *priv = snd_soc_card_get_drvdata(card); + int ret; + + ret = clk_prepare_enable(priv->clk_mclk); + if (ret) { + dev_err(codec->dev, "Failed to enable mclk: %d\n", ret); + return ret; + } + + return 0; +} + +static struct snd_soc_dai_link trats2_dai[] = { + { + .name = "WM1811 AIF1", + .stream_name = "Pri_Dai", + .codec_dai_name = "wm8994-aif1", + .codec_name = "wm8994-codec", + .init = trats2_init_paiftx, + .ops = &trats2_aif1_ops, + }, +}; + +static struct snd_soc_card trats2_card = { + .owner = THIS_MODULE, + + .dai_link = trats2_dai, + .num_links = ARRAY_SIZE(trats2_dai), + + .controls = trats2_controls, + .num_controls = ARRAY_SIZE(trats2_controls), + .dapm_widgets = trats2_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(trats2_dapm_widgets), + + .drvdata = &trats2_wm1811_priv, +}; + +static int trats2_audio_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct snd_soc_card *card = &trats2_card; + struct snd_soc_dai_link *dai_link = card->dai_link; + struct trats2_machine_priv *priv = card->drvdata; + int ret; + + if (!np) { + dev_err(&pdev->dev, "of node is missing.\n"); + return -ENODEV; + } + + card->dev = &pdev->dev; + + ret = snd_soc_of_parse_card_name(card, "samsung,model"); + if (ret) { + dev_err(&pdev->dev, + "Card name is not provided\n"); + return ret; + } + + ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing"); + if (ret) { + dev_err(&pdev->dev, "Audio routing is not provided\n"); + return ret; + } + + dai_link->cpu_of_node = of_parse_phandle(np, + "samsung,i2s-controller", 0); + if (dai_link->cpu_of_node == NULL) { + dev_err(&pdev->dev, "i2s-controller property parse error\n"); + return -EINVAL; + } + + dai_link->platform_of_node = dai_link->cpu_of_node; + + priv->clk_mclk = devm_clk_get(&pdev->dev, "mclk"); + if (IS_ERR(priv->clk_mclk)) { + dev_err(&pdev->dev, "Failed to get mclk clock\n"); + return PTR_ERR(priv->clk_mclk); + } + + ret = devm_snd_soc_register_card(&pdev->dev, card); + if (ret) { + dev_err(&pdev->dev, "Failed to register card: %d\n", ret); + return ret; + } + + return 0; +} + +static const struct of_device_id trats2_audio_of_match[] = { + { .compatible = "samsung,trats2-audio", }, + { }, +}; +MODULE_DEVICE_TABLE(of, trats2_audio_of_match); + +static struct platform_driver trats2_audio_driver = { + .driver = { + .name = "trats2-audio", + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + .of_match_table = trats2_audio_of_match, + }, + .probe = trats2_audio_probe, +}; + +module_platform_driver(trats2_audio_driver); + +MODULE_AUTHOR("Inha Song ideal.song@samsung.com"); +MODULE_DESCRIPTION("ALSA SoC Trats2 Audio Support"); +MODULE_LICENSE("GPL v2");

This patch add WM1811 audio codec, I2S interface and the sound machine nodes to enable audio on exynos4412-trats2 board.

Signed-off-by: Inha Song ideal.song@samsung.com --- arch/arm/boot/dts/exynos4412-trats2.dts | 38 +++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts index 29231b4..2943ce7 100644 --- a/arch/arm/boot/dts/exynos4412-trats2.dts +++ b/arch/arm/boot/dts/exynos4412-trats2.dts @@ -203,6 +203,23 @@ }; };

+ i2c@138A0000 { + samsung,i2c-sda-delay = <100>; + samsung,i2c-slave-addr = <0x10>; + samsung,i2c-max-bus-freq = <100000>; + pinctrl-0 = <&i2c4_bus>; + pinctrl-names = "default"; + status = "okay"; + + wm1811: wm1811@1a { + compatible = "wlf,wm1811"; + reg = <0x1a>; + DCVDD-supply = <&ldo3_reg>; + DBVDD1-supply = <&ldo3_reg>; + wlf,ldo1ena = <&gpj0 4 0>; + }; + }; + i2c@138D0000 { samsung,i2c-sda-delay = <100>; samsung,i2c-slave-addr = <0x10>; @@ -838,6 +855,27 @@ }; };

+ i2s0: i2s@03830000 { + pinctrl-0 = <&i2s0_bus>; + pinctrl-names = "default"; + status = "okay"; + }; + + sound { + compatible = "samsung,trats2-audio"; + clocks = <&pmu_system_controller 0>; + clock-names = "mclk"; + assigned-clocks = <&pmu_system_controller 0>; + assigned-clock-parents = <&clock CLK_XUSBXTI>; + samsung,i2s-controller = <&i2s0>; + samsung,model = "wm1811"; + samsung,audio-routing = + "SPK", "SPKOUTLN", + "SPK", "SPKOUTLP", + "SPK", "SPKOUTRN", + "SPK", "SPKOUTRP"; + }; + exynos-usbphy@125B0000 { status = "okay"; };