--- /dev/null
+/*
+ * rk3328_codec.c -- rk3328 ALSA Soc Audio driver
+ *
+ * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd 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/device.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include <sound/dmaengine_pcm.h>
+#include "rk3328_codec.h"
+
+/*
+ * volume setting
+ * 0: -39dB
+ * 26: 0dB
+ * 31: 6dB
+ * Step: 1.5dB
+ */
+#define OUT_VOLUME (0x18)
+#define RK3328_GRF_SOC_CON2 (0x0408)
+#define RK3328_GRF_SOC_CON10 (0x0428)
+
+struct rk3328_codec_priv {
+ struct regmap *regmap;
+ struct regmap *grf;
+ struct clk *pclk;
+ unsigned int sclk;
+ int spk_depop_time; /* msec */
+};
+
+static const struct reg_default rk3328_codec_reg_defaults[] = {
+ { CODEC_RESET, 0x03 },
+ { DAC_INIT_CTRL1, 0x00 },
+ { DAC_INIT_CTRL2, 0x50 },
+ { DAC_INIT_CTRL3, 0x0e },
+ { DAC_PRECHARGE_CTRL, 0x01 },
+ { DAC_PWR_CTRL, 0x00 },
+ { DAC_CLK_CTRL, 0x00 },
+ { HPMIX_CTRL, 0x00 },
+ { HPOUT_CTRL, 0x00 },
+ { HPOUTL_GAIN_CTRL, 0x00 },
+ { HPOUTR_GAIN_CTRL, 0x00 },
+ { HPOUT_POP_CTRL, 0x11 },
+};
+
+static int rk3328_codec_reset(struct snd_soc_codec *codec)
+{
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+
+ regmap_write(rk3328->regmap, CODEC_RESET, 0);
+ mdelay(10);
+ regmap_write(rk3328->regmap, CODEC_RESET, 0x03);
+
+ return 0;
+}
+
+static int rk3328_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+ unsigned int val = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ val |= PIN_DIRECTION_IN | DAC_I2S_MODE_SLAVE;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ val |= PIN_DIRECTION_OUT | DAC_I2S_MODE_MASTER;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(rk3328->regmap, DAC_INIT_CTRL1,
+ PIN_DIRECTION_MASK | DAC_I2S_MODE_MASK, val);
+
+ val = 0;
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ val |= DAC_MODE_PCM;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ val |= DAC_MODE_I2S;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ val |= DAC_MODE_RJM;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ val |= DAC_MODE_LJM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(rk3328->regmap, DAC_INIT_CTRL2,
+ DAC_MODE_MASK, val);
+ return 0;
+}
+
+static void rk3328_analog_output(struct rk3328_codec_priv *rk3328, int mute)
+{
+ regmap_write(rk3328->grf, RK3328_GRF_SOC_CON10,
+ (BIT(1) << 16) | (mute << 1));
+}
+
+static int rk3328_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+ unsigned int val = 0;
+
+ if (mute)
+ val = HPOUTL_MUTE | HPOUTR_MUTE;
+ else
+ val = HPOUTL_UNMUTE | HPOUTR_UNMUTE;
+
+ regmap_update_bits(rk3328->regmap, HPOUT_CTRL,
+ HPOUTL_MUTE_MASK | HPOUTR_MUTE_MASK, val);
+ return 0;
+}
+
+static int rk3328_codec_power_on(struct snd_soc_codec *codec, int wait_ms)
+{
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+
+ regmap_update_bits(rk3328->regmap, DAC_PRECHARGE_CTRL,
+ DAC_CHARGE_XCHARGE_MASK, DAC_CHARGE_PRECHARGE);
+ mdelay(10);
+ regmap_update_bits(rk3328->regmap, DAC_PRECHARGE_CTRL,
+ DAC_CHARGE_CURRENT_ALL_MASK,
+ DAC_CHARGE_CURRENT_ALL_ON);
+
+ mdelay(wait_ms);
+
+ return 0;
+}
+
+static int rk3328_codec_power_off(struct snd_soc_codec *codec, int wait_ms)
+{
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+
+ regmap_update_bits(rk3328->regmap, DAC_PRECHARGE_CTRL,
+ DAC_CHARGE_XCHARGE_MASK, DAC_CHARGE_DISCHARGE);
+ mdelay(10);
+ regmap_update_bits(rk3328->regmap, DAC_PRECHARGE_CTRL,
+ DAC_CHARGE_CURRENT_ALL_MASK,
+ DAC_CHARGE_CURRENT_ALL_ON);
+
+ mdelay(wait_ms);
+
+ return 0;
+}
+
+static struct rk3328_reg_msk_val playback_open_list[] = {
+ { DAC_PWR_CTRL, DAC_PWR_MASK, DAC_PWR_ON },
+ { DAC_PWR_CTRL, DACL_PATH_REFV_MASK | DACR_PATH_REFV_MASK,
+ DACL_PATH_REFV_ON | DACR_PATH_REFV_ON },
+ { DAC_PWR_CTRL, HPOUTL_ZERO_CROSSING_ON | HPOUTR_ZERO_CROSSING_ON,
+ HPOUTL_ZERO_CROSSING_ON | HPOUTR_ZERO_CROSSING_ON },
+ { HPOUT_POP_CTRL, HPOUTR_POP_MASK | HPOUTL_POP_MASK,
+ HPOUTR_POP_WORK | HPOUTL_POP_WORK },
+ { HPMIX_CTRL, HPMIXL_MASK | HPMIXR_MASK, HPMIXL_EN | HPMIXR_EN },
+ { HPMIX_CTRL, HPMIXL_INIT_MASK | HPMIXR_INIT_MASK,
+ HPMIXL_INIT_EN | HPMIXR_INIT_EN },
+ { HPOUT_CTRL, HPOUTL_MASK | HPOUTR_MASK, HPOUTL_EN | HPOUTR_EN },
+ { HPOUT_CTRL, HPOUTL_INIT_MASK | HPOUTR_INIT_MASK,
+ HPOUTL_INIT_EN | HPOUTR_INIT_EN },
+ { DAC_CLK_CTRL, DACL_REFV_MASK | DACR_REFV_MASK,
+ DACL_REFV_ON | DACR_REFV_ON },
+ { DAC_CLK_CTRL, DACL_CLK_MASK | DACR_CLK_MASK,
+ DACL_CLK_ON | DACR_CLK_ON },
+ { DAC_CLK_CTRL, DACL_MASK | DACR_MASK, DACL_ON | DACR_ON },
+ { DAC_CLK_CTRL, DACL_INIT_MASK | DACR_INIT_MASK,
+ DACL_INIT_ON | DACR_INIT_ON },
+ { DAC_SELECT, DACL_SELECT_MASK | DACR_SELECT_MASK,
+ DACL_SELECT | DACR_SELECT },
+ { HPMIX_CTRL, HPMIXL_INIT2_MASK | HPMIXR_INIT2_MASK,
+ HPMIXL_INIT2_EN | HPMIXR_INIT2_EN },
+ { HPOUT_CTRL, HPOUTL_MUTE_MASK | HPOUTR_MUTE_MASK,
+ HPOUTL_UNMUTE | HPOUTR_UNMUTE },
+};
+
+#define PLAYBACK_OPEN_LIST_LEN ARRAY_SIZE(playback_open_list)
+
+static int rk3328_codec_open_playback(struct snd_soc_codec *codec)
+{
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+ int i = 0;
+
+ regmap_update_bits(rk3328->regmap, DAC_PRECHARGE_CTRL,
+ DAC_CHARGE_CURRENT_ALL_MASK,
+ DAC_CHARGE_CURRENT_I);
+
+ for (i = 0; i < PLAYBACK_OPEN_LIST_LEN; i++) {
+ regmap_update_bits(rk3328->regmap,
+ playback_open_list[i].reg,
+ playback_open_list[i].msk,
+ playback_open_list[i].val);
+ mdelay(1);
+ }
+
+ msleep(rk3328->spk_depop_time);
+ rk3328_analog_output(rk3328, 1);
+
+ regmap_update_bits(rk3328->regmap, HPOUTL_GAIN_CTRL,
+ HPOUTL_GAIN_MASK, OUT_VOLUME);
+ regmap_update_bits(rk3328->regmap, HPOUTR_GAIN_CTRL,
+ HPOUTR_GAIN_MASK, OUT_VOLUME);
+ return 0;
+}
+
+static struct rk3328_reg_msk_val playback_close_list[] = {
+ { HPMIX_CTRL, HPMIXL_INIT2_MASK | HPMIXR_INIT2_MASK,
+ HPMIXL_INIT2_DIS | HPMIXR_INIT2_DIS },
+ { DAC_SELECT, DACL_SELECT_MASK | DACR_SELECT_MASK,
+ DACL_UNSELECT | DACR_UNSELECT },
+ { HPOUT_CTRL, HPOUTL_MUTE_MASK | HPOUTR_MUTE_MASK,
+ HPOUTL_MUTE | HPOUTR_MUTE },
+ { HPOUT_CTRL, HPOUTL_INIT_MASK | HPOUTR_INIT_MASK,
+ HPOUTL_INIT_DIS | HPOUTR_INIT_DIS },
+ { HPOUT_CTRL, HPOUTL_MASK | HPOUTR_MASK, HPOUTL_DIS | HPOUTR_DIS },
+ { HPMIX_CTRL, HPMIXL_MASK | HPMIXR_MASK, HPMIXL_DIS | HPMIXR_DIS },
+ { DAC_CLK_CTRL, DACL_MASK | DACR_MASK, DACL_OFF | DACR_OFF },
+ { DAC_CLK_CTRL, DACL_CLK_MASK | DACR_CLK_MASK,
+ DACL_CLK_OFF | DACR_CLK_OFF },
+ { DAC_CLK_CTRL, DACL_REFV_MASK | DACR_REFV_MASK,
+ DACL_REFV_OFF | DACR_REFV_OFF },
+ { HPOUT_POP_CTRL, HPOUTR_POP_MASK | HPOUTL_POP_MASK,
+ HPOUTR_POP_XCHARGE | HPOUTL_POP_XCHARGE },
+ { DAC_PWR_CTRL, DACL_PATH_REFV_MASK | DACR_PATH_REFV_MASK,
+ DACL_PATH_REFV_OFF | DACR_PATH_REFV_OFF },
+ { DAC_PWR_CTRL, DAC_PWR_MASK, DAC_PWR_OFF },
+ { HPMIX_CTRL, HPMIXL_INIT_MASK | HPMIXR_INIT_MASK,
+ HPMIXL_INIT_DIS | HPMIXR_INIT_DIS },
+ { DAC_CLK_CTRL, DACL_INIT_MASK | DACR_INIT_MASK,
+ DACL_INIT_OFF | DACR_INIT_OFF },
+};
+
+#define PLAYBACK_CLOSE_LIST_LEN ARRAY_SIZE(playback_close_list)
+
+static int rk3328_codec_close_playback(struct snd_soc_codec *codec)
+{
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+ int i = 0;
+
+ rk3328_analog_output(rk3328, 0);
+
+ regmap_update_bits(rk3328->regmap, HPOUTL_GAIN_CTRL,
+ HPOUTL_GAIN_MASK, 0);
+ regmap_update_bits(rk3328->regmap, HPOUTR_GAIN_CTRL,
+ HPOUTR_GAIN_MASK, 0);
+
+ for (i = 0; i < PLAYBACK_CLOSE_LIST_LEN; i++) {
+ regmap_update_bits(rk3328->regmap,
+ playback_close_list[i].reg,
+ playback_close_list[i].msk,
+ playback_close_list[i].val);
+ mdelay(1);
+ }
+
+ regmap_update_bits(rk3328->regmap, DAC_PRECHARGE_CTRL,
+ DAC_CHARGE_CURRENT_ALL_MASK,
+ DAC_CHARGE_CURRENT_I);
+ return 0;
+}
+
+static int rk3328_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct rk3328_codec_priv *rk3328 = snd_soc_codec_get_drvdata(codec);
+ unsigned int val = 0;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ val |= DAC_VDL_16BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ val |= DAC_VDL_20BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ val |= DAC_VDL_24BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ val |= DAC_VDL_32BITS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(rk3328->regmap, DAC_INIT_CTRL2, DAC_VDL_MASK, val);
+ val = DAC_WL_32BITS | DAC_RST_DIS;
+ regmap_update_bits(rk3328->regmap, DAC_INIT_CTRL3,
+ DAC_WL_MASK | DAC_RST_MASK, val);
+
+ return 0;
+}
+
+static int rk3328_pcm_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ return rk3328_codec_open_playback(codec);
+}
+
+static void rk3328_pcm_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ rk3328_codec_close_playback(codec);
+}
+
+static struct snd_soc_dai_ops rk3328_dai_ops = {
+ .hw_params = rk3328_hw_params,
+ .set_fmt = rk3328_set_dai_fmt,
+ .digital_mute = rk3328_digital_mute,
+ .startup = rk3328_pcm_startup,
+ .shutdown = rk3328_pcm_shutdown,
+};
+
+static struct snd_soc_dai_driver rk3328_dai[] = {
+ {
+ .name = "rk3328-hifi",
+ .id = RK3328_HIFI,
+ .playback = {
+ .stream_name = "HIFI Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S20_3LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE),
+ },
+ .ops = &rk3328_dai_ops,
+ },
+};
+
+static int rk3328_codec_probe(struct snd_soc_codec *codec)
+{
+ rk3328_codec_reset(codec);
+ rk3328_codec_power_on(codec, 0);
+
+ return 0;
+}
+
+static int rk3328_codec_remove(struct snd_soc_codec *codec)
+{
+ rk3328_codec_close_playback(codec);
+ rk3328_codec_power_off(codec, 0);
+
+ return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_rk3328 = {
+ .probe = rk3328_codec_probe,
+ .remove = rk3328_codec_remove,
+};
+
+static bool rk3328_codec_write_read_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case CODEC_RESET:
+ case DAC_INIT_CTRL1:
+ case DAC_INIT_CTRL2:
+ case DAC_INIT_CTRL3:
+ case DAC_PRECHARGE_CTRL:
+ case DAC_PWR_CTRL:
+ case DAC_CLK_CTRL:
+ case HPMIX_CTRL:
+ case DAC_SELECT:
+ case HPOUT_CTRL:
+ case HPOUTL_GAIN_CTRL:
+ case HPOUTR_GAIN_CTRL:
+ case HPOUT_POP_CTRL:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rk3328_codec_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case CODEC_RESET:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config rk3328_codec_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = HPOUT_POP_CTRL,
+ .writeable_reg = rk3328_codec_write_read_reg,
+ .readable_reg = rk3328_codec_write_read_reg,
+ .volatile_reg = rk3328_codec_volatile_reg,
+ .reg_defaults = rk3328_codec_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(rk3328_codec_reg_defaults),
+ .cache_type = REGCACHE_FLAT,
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id rk3328codec_of_match[] = {
+ { .compatible = "rockchip,rk3328-codec", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, rk3328codec_of_match);
+#endif
+
+static int rk3328_platform_probe(struct platform_device *pdev)
+{
+ struct device_node *rk3328_np = pdev->dev.of_node;
+ struct rk3328_codec_priv *rk3328;
+ struct resource *res;
+ struct regmap *grf;
+ void __iomem *base;
+ int ret = 0;
+
+ rk3328 = devm_kzalloc(&pdev->dev, sizeof(*rk3328), GFP_KERNEL);
+ if (!rk3328)
+ return -ENOMEM;
+
+ grf = syscon_regmap_lookup_by_phandle(rk3328_np,
+ "rockchip,grf");
+ if (IS_ERR(grf)) {
+ dev_err(&pdev->dev, "missing 'rockchip,grf'\n");
+ return PTR_ERR(grf);
+ }
+ rk3328->grf = grf;
+ /* enable i2s_acodec_en */
+ regmap_write(grf, RK3328_GRF_SOC_CON2,
+ (BIT(14) << 16 | BIT(14)));
+
+ ret = of_property_read_u32(rk3328_np, "spk-depop-time-ms",
+ &rk3328->spk_depop_time);
+ if (ret < 0) {
+ dev_info(&pdev->dev, "spk_depop_time use default value.\n");
+ rk3328->spk_depop_time = 200;
+ }
+
+ rk3328_analog_output(rk3328, 0);
+
+ rk3328->pclk = devm_clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(rk3328->pclk)) {
+ dev_err(&pdev->dev, "can't get acodec pclk\n");
+ return PTR_ERR(rk3328->pclk);
+ }
+
+ ret = clk_prepare_enable(rk3328->pclk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to enable acodec pclk\n");
+ return ret;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ rk3328->regmap = devm_regmap_init_mmio(&pdev->dev, base,
+ &rk3328_codec_regmap_config);
+ if (IS_ERR(rk3328->regmap))
+ return PTR_ERR(rk3328->regmap);
+
+ platform_set_drvdata(pdev, rk3328);
+
+ return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_rk3328,
+ rk3328_dai, ARRAY_SIZE(rk3328_dai));
+}
+
+static int rk3328_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver rk3328_codec_driver = {
+ .driver = {
+ .name = "rk3328-codec",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(rk3328codec_of_match),
+ },
+ .probe = rk3328_platform_probe,
+ .remove = rk3328_platform_remove,
+};
+module_platform_driver(rk3328_codec_driver);
+
+MODULE_AUTHOR("Sugar Zhang <sugar.zhang@rock-chips.com>");
+MODULE_DESCRIPTION("ASoC rk3328 codec driver");
+MODULE_LICENSE("GPL v2");
projects / firefly-linux-kernel-4.4.55.git / blobdiff