--- /dev/null
+/*
+ * This driver supports the digital controls for the internal codec
+ * found in Allwinner's A33 SoCs.
+ *
+ * (C) Copyright 2010-2016
+ * Reuuimlla Technology Co., Ltd. <www.reuuimllatech.com>
+ * huangxin <huangxin@Reuuimllatech.com>
+ * Mylène Josserand <mylene.josserand@free-electrons.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that 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.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#define SUN8I_SYSCLK_CTL 0x00c
+#define SUN8I_SYSCLK_CTL_AIF1CLK_ENA 11
+#define SUN8I_SYSCLK_CTL_AIF1CLK_SRC_PLL 9
+#define SUN8I_SYSCLK_CTL_AIF1CLK_SRC 8
+#define SUN8I_SYSCLK_CTL_SYSCLK_ENA 3
+#define SUN8I_SYSCLK_CTL_SYSCLK_SRC 0
+#define SUN8I_MOD_CLK_ENA 0x010
+#define SUN8I_MOD_CLK_ENA_AIF1 15
+#define SUN8I_MOD_CLK_ENA_DAC 2
+#define SUN8I_MOD_RST_CTL 0x014
+#define SUN8I_MOD_RST_CTL_AIF1 15
+#define SUN8I_MOD_RST_CTL_DAC 2
+#define SUN8I_SYS_SR_CTRL 0x018
+#define SUN8I_SYS_SR_CTRL_AIF1_FS 12
+#define SUN8I_SYS_SR_CTRL_AIF2_FS 8
+#define SUN8I_AIF1CLK_CTRL 0x040
+#define SUN8I_AIF1CLK_CTRL_AIF1_MSTR_MOD 15
+#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_INV 14
+#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV 13
+#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV 9
+#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV 6
+#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_16 (1 << 6)
+#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ 4
+#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_16 (1 << 4)
+#define SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT 2
+#define SUN8I_AIF1_DACDAT_CTRL 0x048
+#define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA 15
+#define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_ENA 14
+#define SUN8I_DAC_DIG_CTRL 0x120
+#define SUN8I_DAC_DIG_CTRL_ENDA 15
+#define SUN8I_DAC_MXR_SRC 0x130
+#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA0L 15
+#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA1L 14
+#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF2DACL 13
+#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_ADCL 12
+#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA0R 11
+#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA1R 10
+#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF2DACR 9
+#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_ADCR 8
+
+#define SUN8I_SYS_SR_CTRL_AIF1_FS_MASK GENMASK(15, 12)
+#define SUN8I_SYS_SR_CTRL_AIF2_FS_MASK GENMASK(11, 8)
+#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK GENMASK(5, 4)
+#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK GENMASK(8, 6)
+
+struct sun8i_codec {
+ struct device *dev;
+ struct regmap *regmap;
+ struct clk *clk_module;
+ struct clk *clk_bus;
+};
+
+static int sun8i_codec_runtime_resume(struct device *dev)
+{
+ struct sun8i_codec *scodec = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(scodec->clk_module);
+ if (ret) {
+ dev_err(dev, "Failed to enable the module clock\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(scodec->clk_bus);
+ if (ret) {
+ dev_err(dev, "Failed to enable the bus clock\n");
+ goto err_disable_modclk;
+ }
+
+ regcache_cache_only(scodec->regmap, false);
+
+ ret = regcache_sync(scodec->regmap);
+ if (ret) {
+ dev_err(dev, "Failed to sync regmap cache\n");
+ goto err_disable_clk;
+ }
+
+ return 0;
+
+err_disable_clk:
+ clk_disable_unprepare(scodec->clk_bus);
+
+err_disable_modclk:
+ clk_disable_unprepare(scodec->clk_module);
+
+ return ret;
+}
+
+static int sun8i_codec_runtime_suspend(struct device *dev)
+{
+ struct sun8i_codec *scodec = dev_get_drvdata(dev);
+
+ regcache_cache_only(scodec->regmap, true);
+ regcache_mark_dirty(scodec->regmap);
+
+ clk_disable_unprepare(scodec->clk_module);
+ clk_disable_unprepare(scodec->clk_bus);
+
+ return 0;
+}
+
+static int sun8i_codec_get_hw_rate(struct snd_pcm_hw_params *params)
+{
+ unsigned int rate = params_rate(params);
+
+ switch (rate) {
+ case 8000:
+ case 7350:
+ return 0x0;
+ case 11025:
+ return 0x1;
+ case 12000:
+ return 0x2;
+ case 16000:
+ return 0x3;
+ case 22050:
+ return 0x4;
+ case 24000:
+ return 0x5;
+ case 32000:
+ return 0x6;
+ case 44100:
+ return 0x7;
+ case 48000:
+ return 0x8;
+ case 96000:
+ return 0x9;
+ case 192000:
+ return 0xa;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int sun8i_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct sun8i_codec *scodec = snd_soc_codec_get_drvdata(dai->codec);
+ u32 value;
+
+ /* clock masters */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS: /* DAI Slave */
+ value = 0x0; /* Codec Master */
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM: /* DAI Master */
+ value = 0x1; /* Codec Slave */
+ break;
+ default:
+ return -EINVAL;
+ }
+ regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
+ BIT(SUN8I_AIF1CLK_CTRL_AIF1_MSTR_MOD),
+ value << SUN8I_AIF1CLK_CTRL_AIF1_MSTR_MOD);
+
+ /* clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF: /* Normal */
+ value = 0x0;
+ break;
+ case SND_SOC_DAIFMT_IB_IF: /* Inversion */
+ value = 0x1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
+ BIT(SUN8I_AIF1CLK_CTRL_AIF1_BCLK_INV),
+ value << SUN8I_AIF1CLK_CTRL_AIF1_BCLK_INV);
+ regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
+ BIT(SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV),
+ value << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV);
+
+ /* DAI format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ value = 0x0;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ value = 0x1;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ value = 0x2;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ value = 0x3;
+ break;
+ default:
+ return -EINVAL;
+ }
+ regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
+ BIT(SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT),
+ value << SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT);
+
+ return 0;
+}
+
+static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct sun8i_codec *scodec = snd_soc_codec_get_drvdata(dai->codec);
+ int sample_rate;
+
+ /*
+ * The CPU DAI handles only a sample of 16 bits. Configure the
+ * codec to handle this type of sample resolution.
+ */
+ regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
+ SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK,
+ SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_16);
+
+ regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
+ SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK,
+ SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_16);
+
+ sample_rate = sun8i_codec_get_hw_rate(params);
+ if (sample_rate < 0)
+ return sample_rate;
+
+ regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL,
+ SUN8I_SYS_SR_CTRL_AIF1_FS_MASK,
+ sample_rate << SUN8I_SYS_SR_CTRL_AIF1_FS);
+ regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL,
+ SUN8I_SYS_SR_CTRL_AIF2_FS_MASK,
+ sample_rate << SUN8I_SYS_SR_CTRL_AIF2_FS);
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new sun8i_output_left_mixer_controls[] = {
+ SOC_DAPM_SINGLE("LSlot 0", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA0L, 1, 0),
+ SOC_DAPM_SINGLE("LSlot 1", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA1L, 1, 0),
+ SOC_DAPM_SINGLE("DACL", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF2DACL, 1, 0),
+ SOC_DAPM_SINGLE("ADCL", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_ADCL, 1, 0),
+};
+
+static const struct snd_kcontrol_new sun8i_output_right_mixer_controls[] = {
+ SOC_DAPM_SINGLE("RSlot 0", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA0R, 1, 0),
+ SOC_DAPM_SINGLE("RSlot 1", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA1R, 1, 0),
+ SOC_DAPM_SINGLE("DACR", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF2DACR, 1, 0),
+ SOC_DAPM_SINGLE("ADCR", SUN8I_DAC_MXR_SRC,
+ SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_ADCR, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
+ /* Digital parts of the DACs */
+ SND_SOC_DAPM_SUPPLY("DAC", SUN8I_DAC_DIG_CTRL, SUN8I_DAC_DIG_CTRL_ENDA,
+ 0, NULL, 0),
+
+ /* Analog DAC */
+ SND_SOC_DAPM_DAC("Digital Left DAC", "Playback", SUN8I_AIF1_DACDAT_CTRL,
+ SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA, 0),
+ SND_SOC_DAPM_DAC("Digital Right DAC", "Playback", SUN8I_AIF1_DACDAT_CTRL,
+ SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_ENA, 0),
+
+ /* DAC Mixers */
+ SND_SOC_DAPM_MIXER("Left DAC Mixer", SND_SOC_NOPM, 0, 0,
+ sun8i_output_left_mixer_controls,
+ ARRAY_SIZE(sun8i_output_left_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Right DAC Mixer", SND_SOC_NOPM, 0, 0,
+ sun8i_output_right_mixer_controls,
+ ARRAY_SIZE(sun8i_output_right_mixer_controls)),
+
+ /* Clocks */
+ SND_SOC_DAPM_SUPPLY("MODCLK AFI1", SUN8I_MOD_CLK_ENA,
+ SUN8I_MOD_CLK_ENA_AIF1, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("MODCLK DAC", SUN8I_MOD_CLK_ENA,
+ SUN8I_MOD_CLK_ENA_DAC, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("AIF1", SUN8I_SYSCLK_CTL,
+ SUN8I_SYSCLK_CTL_AIF1CLK_ENA, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("SYSCLK", SUN8I_SYSCLK_CTL,
+ SUN8I_SYSCLK_CTL_SYSCLK_ENA, 0, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("AIF1 PLL", SUN8I_SYSCLK_CTL,
+ SUN8I_SYSCLK_CTL_AIF1CLK_SRC_PLL, 0, NULL, 0),
+ /* Inversion as 0=AIF1, 1=AIF2 */
+ SND_SOC_DAPM_SUPPLY("SYSCLK AIF1", SUN8I_SYSCLK_CTL,
+ SUN8I_SYSCLK_CTL_SYSCLK_SRC, 1, NULL, 0),
+
+ /* Module reset */
+ SND_SOC_DAPM_SUPPLY("RST AIF1", SUN8I_MOD_RST_CTL,
+ SUN8I_MOD_RST_CTL_AIF1, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("RST DAC", SUN8I_MOD_RST_CTL,
+ SUN8I_MOD_RST_CTL_DAC, 0, NULL, 0),
+
+ SND_SOC_DAPM_OUTPUT("HP"),
+};
+
+static const struct snd_soc_dapm_route sun8i_codec_dapm_routes[] = {
+ /* Clock Routes */
+ { "AIF1", NULL, "SYSCLK AIF1" },
+ { "AIF1 PLL", NULL, "AIF1" },
+ { "RST AIF1", NULL, "AIF1 PLL" },
+ { "MODCLK AFI1", NULL, "RST AIF1" },
+ { "DAC", NULL, "MODCLK AFI1" },
+
+ { "RST DAC", NULL, "SYSCLK" },
+ { "MODCLK DAC", NULL, "RST DAC" },
+ { "DAC", NULL, "MODCLK DAC" },
+
+ /* DAC Routes */
+ { "Digital Left DAC", NULL, "DAC" },
+ { "Digital Right DAC", NULL, "DAC" },
+
+ /* DAC Mixer Routes */
+ { "Left DAC Mixer", "LSlot 0", "Digital Left DAC"},
+ { "Right DAC Mixer", "RSlot 0", "Digital Right DAC"},
+
+ /* End of route : HP out */
+ { "HP", NULL, "Left DAC Mixer" },
+ { "HP", NULL, "Right DAC Mixer" },
+};
+
+static struct snd_soc_dai_ops sun8i_codec_dai_ops = {
+ .hw_params = sun8i_codec_hw_params,
+ .set_fmt = sun8i_set_fmt,
+};
+
+static struct snd_soc_dai_driver sun8i_codec_dai = {
+ .name = "sun8i",
+ /* playback capabilities */
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ /* pcm operations */
+ .ops = &sun8i_codec_dai_ops,
+};
+
+static struct snd_soc_codec_driver sun8i_soc_codec = {
+ .component_driver = {
+ .dapm_widgets = sun8i_codec_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sun8i_codec_dapm_widgets),
+ .dapm_routes = sun8i_codec_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(sun8i_codec_dapm_routes),
+ },
+};
+
+static const struct regmap_config sun8i_codec_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = SUN8I_DAC_MXR_SRC,
+
+ .cache_type = REGCACHE_FLAT,
+};
+
+static int sun8i_codec_probe(struct platform_device *pdev)
+{
+ struct resource *res_base;
+ struct sun8i_codec *scodec;
+ void __iomem *base;
+ int ret;
+
+ scodec = devm_kzalloc(&pdev->dev, sizeof(*scodec), GFP_KERNEL);
+ if (!scodec)
+ return -ENOMEM;
+
+ scodec->dev = &pdev->dev;
+
+ scodec->clk_module = devm_clk_get(&pdev->dev, "mod");
+ if (IS_ERR(scodec->clk_module)) {
+ dev_err(&pdev->dev, "Failed to get the module clock\n");
+ return PTR_ERR(scodec->clk_module);
+ }
+
+ scodec->clk_bus = devm_clk_get(&pdev->dev, "bus");
+ if (IS_ERR(scodec->clk_bus)) {
+ dev_err(&pdev->dev, "Failed to get the bus clock\n");
+ return PTR_ERR(scodec->clk_bus);
+ }
+
+ res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res_base);
+ if (IS_ERR(base)) {
+ dev_err(&pdev->dev, "Failed to map the registers\n");
+ return PTR_ERR(base);
+ }
+
+ scodec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
+ &sun8i_codec_regmap_config);
+ if (IS_ERR(scodec->regmap)) {
+ dev_err(&pdev->dev, "Failed to create our regmap\n");
+ return PTR_ERR(scodec->regmap);
+ }
+
+ platform_set_drvdata(pdev, scodec);
+
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = sun8i_codec_runtime_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ ret = snd_soc_register_codec(&pdev->dev, &sun8i_soc_codec,
+ &sun8i_codec_dai, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register codec\n");
+ goto err_suspend;
+ }
+
+ return ret;
+
+err_suspend:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ sun8i_codec_runtime_suspend(&pdev->dev);
+
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+
+ return ret;
+}
+
+static int sun8i_codec_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct sun8i_codec *scodec = snd_soc_card_get_drvdata(card);
+
+ pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ sun8i_codec_runtime_suspend(&pdev->dev);
+
+ snd_soc_unregister_codec(&pdev->dev);
+ clk_disable_unprepare(scodec->clk_module);
+ clk_disable_unprepare(scodec->clk_bus);
+
+ return 0;
+}
+
+static const struct of_device_id sun8i_codec_of_match[] = {
+ { .compatible = "allwinner,sun8i-a33-codec" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, sun8i_codec_of_match);
+
+static const struct dev_pm_ops sun8i_codec_pm_ops = {
+ SET_RUNTIME_PM_OPS(sun8i_codec_runtime_suspend,
+ sun8i_codec_runtime_resume, NULL)
+};
+
+static struct platform_driver sun8i_codec_driver = {
+ .driver = {
+ .name = "sun8i-codec",
+ .of_match_table = sun8i_codec_of_match,
+ .pm = &sun8i_codec_pm_ops,
+ },
+ .probe = sun8i_codec_probe,
+ .remove = sun8i_codec_remove,
+};
+module_platform_driver(sun8i_codec_driver);
+
+MODULE_DESCRIPTION("Allwinner A33 (sun8i) codec driver");
+MODULE_AUTHOR("Mylène Josserand <mylene.josserand@free-electrons.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sun8i-codec");
projects / platform / kernel / linux-starfive.git / commitdiff