The NAU88L25 is an ultra-low power high performance audio codec designed
for smartphone, tablet PC, and other portable devices by Nuvoton, now
add linux driver support for it.
Signed-off-by: Chih-Chiang Chang <[email protected]>
---
include/sound/nau8825_plat.h | 22 ++
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/nau8825.c | 593 +++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/nau8825.h | 150 +++++++++++
5 files changed, 772 insertions(+)
create mode 100644 include/sound/nau8825_plat.h
create mode 100644 sound/soc/codecs/nau8825.c
create mode 100644 sound/soc/codecs/nau8825.h
diff --git a/include/sound/nau8825_plat.h b/include/sound/nau8825_plat.h
new file mode 100644
index 0000000..87afcd3
--- /dev/null
+++ b/include/sound/nau8825_plat.h
@@ -0,0 +1,22 @@
+/*
+ * linux/sound/snd_nau8825.h -- Platform data for NAU8825
+ *
+ * Copyright 2015 Nuvoton Technology Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_SND_NAU8825_H
+#define __LINUX_SND_NAU8825_H
+
+struct nau8825_platform_data {
+ unsigned int audio_mclk1;
+ unsigned int gpio_irq;
+ int naudint_irq;
+ int headset_detect;
+ int button_press_detect;
+};
+
+#endif
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 0bddd92..8807c57 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -75,6 +75,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_MAX9877 if I2C
select SND_SOC_MC13783 if MFD_MC13XXX
select SND_SOC_ML26124 if I2C
+ select SND_SOC_NAU8825 if I2C
select SND_SOC_HDMI_CODEC
select SND_SOC_PCM1681 if I2C
select SND_SOC_PCM1792A if SPI_MASTER
@@ -464,6 +465,10 @@ config SND_SOC_MAX98357A
config SND_SOC_MAX9850
tristate
+config SND_SOC_NAU8825
+ tristate "Nuvoton NAU8825 CODEC"
+ depends on I2C
+
config SND_SOC_PCM1681
tristate "Texas Instruments PCM1681 CODEC"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 7acb6c1..acf594e 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -68,6 +68,7 @@ snd-soc-max98357a-objs := max98357a.o
snd-soc-max9850-objs := max9850.o
snd-soc-mc13783-objs := mc13783.o
snd-soc-ml26124-objs := ml26124.o
+snd-soc-nau8825-objs := nau8825.o
snd-soc-hdmi-codec-objs := hdmi.o
snd-soc-pcm1681-objs := pcm1681.o
snd-soc-pcm1792a-codec-objs := pcm1792a.o
@@ -252,6 +253,7 @@ obj-$(CONFIG_SND_SOC_MAX98357A) += snd-soc-max98357a.o
obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o
obj-$(CONFIG_SND_SOC_MC13783) += snd-soc-mc13783.o
obj-$(CONFIG_SND_SOC_ML26124) += snd-soc-ml26124.o
+obj-$(CONFIG_SND_SOC_NAU8825) += snd-soc-nau8825.o
obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o
obj-$(CONFIG_SND_SOC_PCM1681) += snd-soc-pcm1681.o
obj-$(CONFIG_SND_SOC_PCM1792A) += snd-soc-pcm1792a-codec.o
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
new file mode 100644
index 0000000..a8c8f59
--- /dev/null
+++ b/sound/soc/codecs/nau8825.c
@@ -0,0 +1,593 @@
+/*
+ * linux/sound/soc/codecs/nau8825.c
+ *
+ * Copyright 2015 Nuvoton Technology Corp.
+ * Author: Meng-Huang Kuo <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/regmap.h>
+#include <linux/acpi.h>
+#include <asm/div64.h>
+#include <sound/jack.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <linux/delay.h>
+#include "nau8825.h"
+
+static int nau8825_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai);
+static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt);
+static int nau8825_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level);
+static int nau8825_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir);
+static const DECLARE_TLV_DB_SCALE(out_hp_vol_tlv, -5400, 100, 0);
+static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, 2400, 50, 1);
+static const DECLARE_TLV_DB_SCALE(adc_vol_tlv, -12800, 50, 0);
+
+static const struct snd_kcontrol_new nau8825_snd_controls[] = {
+
+ SOC_SINGLE_TLV("MIC Volume", NAU8825_ADC_DGAIN_CTRL,
+ NAU8825_ADC_DGAIN_SFT,
+ NAU8825_ADC_VOL_RSCL_RANGE, 0, adc_vol_tlv),
+ SOC_DOUBLE_TLV("HP Volume", NAU8825_HSVOL_CTRL,
+ NAU8825_L_HSVOL_SFT, NAU8825_R_HSVOL_SFT,
+ NAU8825_VOL_RSCL_RANGE, 1, out_hp_vol_tlv),
+ SOC_DOUBLE("HP Playback Switch", NAU8825_HSVOL_CTRL, NAU8825_L_MUTE,
+ NAU8825_R_MUTE, 1, 1),
+ SOC_SINGLE("HP Class OP", NAU8825_CLASS_G_CTRL, NAU8825_CLASS_G_SHIFT,
+ 1, 0),
+ SOC_SINGLE("DAC Right", NAU8825_DAC_CTRL, NAU8825_DAC_R_SFT, 1, 0),
+ SOC_SINGLE("DAC Left", NAU8825_DAC_CTRL, NAU8825_DAC_L_SFT, 1, 0),
+ SOC_SINGLE("DAC Right Clock", NAU8825_DAC_CTRL, NAU8825_DAC_CLK_R_SFT,
+ 1, 0),
+ SOC_SINGLE("DAC Left Clock", NAU8825_DAC_CTRL, NAU8825_DAC_CLK_L_SFT,
+ 1, 0),
+};
+
+static const struct snd_kcontrol_new nau8825_hpo_mix[] = {
+ SOC_DAPM_SINGLE("HP L Switch", NAU8825_HSVOL_CTRL,
+ NAU8825_L_MUTE_SFT, 1, 1),
+ SOC_DAPM_SINGLE("HP R Switch", NAU8825_HSVOL_CTRL,
+ NAU8825_R_MUTE_SFT, 1, 1),
+};
+
+static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
+
+ SND_SOC_DAPM_INPUT("Mic Jack"),
+ SND_SOC_DAPM_MICBIAS("MIC BIAS", NAU8825_BOOST, NAU8825_G_BIAS_SFT, 0),
+ SND_SOC_DAPM_SUPPLY("micbias", SND_SOC_NOPM, 0, 0,
+ NULL, SND_SOC_DAPM_PRE_PMU
+ | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SUPPLY("vmid", SND_SOC_NOPM, 0, 0, NULL,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ /* ADCs */
+ SND_SOC_DAPM_ADC("ADC L", NULL, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_ADC("ADC R", NULL, SND_SOC_NOPM, 0, 0),
+ /* ADC IF1 */
+ SND_SOC_DAPM_PGA("IF1 ADC", SND_SOC_NOPM, 0, 0, NULL, 0),
+ /* Audio Interface */
+ SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
+ /* DACs */
+ SND_SOC_DAPM_DAC_E("DAC L1", NULL, NAU8825_DAC_CTRL,
+ NAU8825_DAC_L_SFT, 0, NULL,
+ SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_DAC_E("DAC R1", NULL, NAU8825_DAC_CTRL,
+ NAU8825_DAC_R_SFT, 0, NULL,
+ SND_SOC_DAPM_PRE_PMD),
+ /* SPO/HPO/LOUT/Mono Mixer */
+ SND_SOC_DAPM_MIXER("HPO MIX", SND_SOC_NOPM, 0, 0, nau8825_hpo_mix,
+ ARRAY_SIZE(nau8825_hpo_mix)),
+ SND_SOC_DAPM_PGA_S("HP amp", 1, NAU8825_CLASS_G_CTRL,
+ NAU8825_CLASS_G_SHIFT, 0, NULL, 0),
+ /* Output Lines */
+ SND_SOC_DAPM_OUTPUT("HPOL"),
+ SND_SOC_DAPM_OUTPUT("HPOR"),
+};
+
+static const struct snd_soc_dapm_route nau8825_dapm_routes[] = {
+
+ {"ADC L", NULL, "Mic Jack"},
+ {"ADC R", NULL, "Mic Jack"},
+ {"AIF1TX", NULL, "ADC L"},
+ {"AIF1TX", NULL, "ADC R"},
+ {"DAC L1", NULL, "AIF1RX"},
+ {"DAC R1", NULL, "AIF1RX"},
+ {"HPO MIX", "HP L Switch", "DAC L1"},
+ {"HPO MIX", "HP R Switch", "DAC R1"},
+ {"HP amp", NULL, "HPO MIX"},
+ {"HPOL", NULL, "HP amp"},
+ {"HPOR", NULL, "HP amp"},
+};
+
+static int nau8825_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *tmp)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ unsigned int val_len = 0;
+
+ switch (params_width(params)) {
+ case 16:
+ break;
+ case 20:
+ val_len |= NAU8825_I2S_DL_20;
+ break;
+ case 24:
+ val_len |= NAU8825_I2S_DL_24;
+ break;
+ case 32:
+ val_len |= NAU8825_I2S_DL_32;
+ break;
+ default:
+ return -EINVAL;
+ }
+ snd_soc_update_bits(codec, NAU8825_I2S_PCM_CTRL_1,
+ NAU8825_I2S_DL_MASK, val_len);
+ return 0;
+}
+
+static int nau8825_dac_mute(struct snd_soc_dai *codec_dai, int mute)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+
+ if (mute)
+ snd_soc_update_bits(codec, NAU8825_DAC_MUTE_CTRL,
+ NAU8825_SOFT_MUTE_MASK, NAU8825_SOFT_MUTE_EN);
+ else
+ snd_soc_update_bits(codec, NAU8825_DAC_MUTE_CTRL,
+ NAU8825_SOFT_MUTE_MASK, NAU8825_SOFT_MUTE_DIS);
+ return 0;
+}
+
+static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ unsigned int reg_val = 0;
+
+ dev_dbg(codec->dev, " %s ###nau8825_set_dai_fmt %x\n", __func__, fmt);
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ reg_val |= NAU8825_I2S_BP_INV;
+ break;
+ default:
+ dev_alert(codec->dev, "Invalid DAI interface format\n");
+ return -EINVAL;
+ }
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ reg_val |= NAU8825_I2S_DF_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ reg_val |= NAU8825_I2S_DF_LEFT;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ reg_val |= NAU8825_I2S_DF_RIGHT;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ reg_val |= NAU8825_I2S_DF_PCM_A;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ reg_val |= NAU8825_I2S_DF_PCM_B;
+ reg_val |= NAU8825_I2S_PCMB_EN;
+ break;
+ default:
+ dev_alert(codec->dev, "Invalid DAI I2S/PCM format\n");
+ return -EINVAL;
+ }
+ snd_soc_update_bits(codec, NAU8825_I2S_PCM_CTRL_1,
+ NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK
+ | NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK,
+ reg_val);
+ return 0;
+}
+
+static void config_fll_clk_12m(struct snd_soc_codec *codec)
+{
+ snd_soc_update_bits(codec, NAU8825_CLK_DIVIDER, 0x000F, 0x0003);
+ snd_soc_update_bits(codec, NAU8825_FL_1, 0x007F, 0x0001);
+ snd_soc_write(codec, NAU8825_FL_2, 0xC49B);
+ snd_soc_update_bits(codec, NAU8825_FL_3, 0x03FF, 0x0020);
+ snd_soc_update_bits(codec, NAU8825_FL_4, 0x0C00, 0x0800);
+ snd_soc_update_bits(codec, NAU8825_FL_5, 0x2000, 0x0000);
+ snd_soc_update_bits(codec, NAU8825_FL_6, 0x4000, 0x4000);
+}
+
+void set_sys_clk(struct snd_soc_codec *codec, int sys_clk)
+{
+ pr_debug("%s :: sys_clk=%x\n", __func__, sys_clk);
+ switch (sys_clk) {
+ case NAU8825_INTERNALCLOCK:
+ snd_soc_write(codec, NAU8825_CLK_DIVIDER, 0x0853);
+ snd_soc_write(codec, NAU8825_FL_6, 0xE000);
+ snd_soc_write(codec, NAU8825_CLK_DIVIDER, 0x8853);
+ break;
+ case NAU8825_MCLK:
+ default:
+ snd_soc_write(codec, NAU8825_CLK_DIVIDER, 0x0853);
+ snd_soc_write(codec, NAU8825_FL_6, 0x6000);
+ snd_soc_write(codec, NAU8825_CLK_DIVIDER, 0x8853);
+ break;
+ }
+}
+
+static int nau8825_dai_set_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ switch (clk_id) {
+ case NAU8825_MCLK:
+ config_fll_clk_12m(codec);
+ set_sys_clk(codec, clk_id);
+ break;
+ case NAU8825_INTERNALCLOCK:
+ set_sys_clk(codec, clk_id);
+ break;
+ default:
+ dev_err(codec->dev, "Wrong clock src\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int nau8825_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ /* All power is driven by DAPM system*/
+ dev_dbg(codec->dev, "###nau8825_set_bias_level BIAS_ON\n");
+ snd_soc_update_bits(codec, NAU8825_BIAS_ADJ,
+ NAU8825_VMID_MASK, NAU8825_VMID_EN);
+ snd_soc_update_bits(codec, NAU8825_BOOST,
+ NAU8825_G_BIAS_MASK, NAU8825_G_BIAS_EN);
+ break;
+ case SND_SOC_BIAS_OFF:
+ dev_dbg(codec->dev, "###nau8825_set_bias_level OFF\n");
+ set_sys_clk(codec, NAU8825_INTERNALCLOCK);
+ snd_soc_update_bits(codec, NAU8825_BIAS_ADJ, NAU8825_VMID_MASK,
+ NAU8825_VMID_DIS);
+ snd_soc_update_bits(codec, NAU8825_BOOST,
+ NAU8825_G_BIAS_MASK, NAU8825_G_BIAS_DIS);
+ break;
+ default:
+ break;
+ }
+ codec->dapm.bias_level = level;
+ dev_dbg(codec->dev, "## nau8825_set_bias_level %d\n", level);
+ return 0;
+}
+
+static int nau8825_codec_suspend(struct snd_soc_codec *codec)
+{
+ nau8825_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ return 0;
+}
+
+static int nau8825_resume(struct snd_soc_codec *codec)
+{
+ nau8825_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ return 0;
+}
+
+static const struct reg_default nau8825_reg[] = {
+ /* software reset */
+ {0x0000, 0x0001},
+ {0x0000, 0x0002},
+ /* enable clock source */
+ {0x0001, 0x07FF},
+ /* enable VMID and Bias */
+ {0x0076, 0x3140},
+ /* setup clock divider */
+ {0x0003, 0x0050},
+ /* jack detection configuration */
+ {0x000D, 0x00E0},
+ {0x000F, 0x0801},
+ {0x0012, 0x0010},
+ /* keypad detection configuration */
+ {0x0013, 0x0280},
+ {0x0014, 0x7310},
+ {0x0015, 0x050E},
+ {0x0016, 0x1B2A},
+ /* audio format configuration */
+ {0x001A, 0x0800},
+ {0x001C, 0x000E},
+ {0x001D, 0x0010},
+ /* sampling rate control */
+ {0x002B, 0x0012},
+ /* DAC sampling rate control */
+ {0x002C, 0x0082},
+ /* ADC and DAC mixer control */
+ {0x0030, 0x00D2},
+ {0x0033, 0x00CF},
+ {0x0034, 0x02CF},
+ /* DAC class-G control */
+ {0x006A, 0x1003},
+ {0x0050, 0x2007},
+ /* ADC PGA control */
+ {0x0072, 0x0260},
+ /* DAC power down enabled */
+ {0x0080, 0x03A0},
+ /* enable DAC clock */
+ {0x0073, 0x336C},
+ /* enable MIC Bias */
+ {0x0074, 0x5502},
+ /* powerup output driver */
+ {0x007F, 0x473C},
+ {0x007F, 0x473F},
+ /* DAC power down disabled */
+ {0x0080, 0x00A0},
+ /* adjust MIC Bias */
+ {0x0066, 0x2060},
+ {0x0066, 0x2060},
+ {0x0066, 0x0060},
+};
+
+static int nau8825_codec_probe(struct snd_soc_codec *codec)
+{
+ int i;
+ struct nau8825_priv *nau8825;
+
+ nau8825 = snd_soc_codec_get_drvdata(codec);
+ nau8825->codec = codec;
+ /*writing initial register values to the codec*/
+ for (i = 0; i < ARRAY_SIZE(nau8825_reg); i++)
+ snd_soc_write(codec, nau8825_reg[i].reg, nau8825_reg[i].def);
+ return 0;
+}
+
+static int nau8825_codec_remove(struct snd_soc_codec *codec)
+{
+ struct nau8825_priv *nau8825 = snd_soc_codec_get_drvdata(codec);
+
+ regmap_write(nau8825->regmap, NAU8825_RESET, 0);
+ regmap_write(nau8825->regmap, NAU8825_RESET, 1);
+ return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_driver_nau8825 = {
+ .probe = nau8825_codec_probe,
+ .remove = nau8825_codec_remove,
+ .suspend = nau8825_codec_suspend,
+ .resume = nau8825_resume,
+ .set_bias_level = nau8825_set_bias_level,
+ .controls = nau8825_snd_controls,
+ .num_controls = ARRAY_SIZE(nau8825_snd_controls),
+ .dapm_widgets = nau8825_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets),
+ .dapm_routes = nau8825_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes),
+};
+
+static bool nau8825_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8825_RESET:
+ case NAU8825_ENA_CTRL:
+ case NAU8825_CLK_EN:
+ case NAU8825_CLK_DIVIDER:
+ case NAU8825_FL_1:
+ case NAU8825_FL_2:
+ case NAU8825_FL_3:
+ case NAU8825_FL_4:
+ case NAU8825_FL_5:
+ case NAU8825_FL_6:
+ case NAU8825_HEADSET_CTRL:
+ case NAU8825_JACK_DET_CTRL:
+ case NAU8825_IRQ_SETTING_1:
+ case NAU8825_IRQ_STATUS:
+ case NAU8825_IRQ_CLEAR:
+ case NAU8825_IRQ_SETTING:
+ case NAU8825_SAR_ADC:
+ case NAU8825_VDET_COEFFICIENT:
+ case NAU8825_VDET_THRESHOLD_1:
+ case NAU8825_VDET_THRESHOLD_2:
+ case NAU8825_GPIO2_CTRL:
+ case NAU8825_I2S_PCM_CTRL_1:
+ case NAU8825_I2S_PCM_CTRL_2:
+ case NAU8825_ADC_RATE:
+ case NAU8825_DAC_CTRL1:
+ case NAU8825_DAC_CTRL2:
+ case NAU8825_ADC_DGAIN_CTRL:
+ case NAU8825_DAC_MUTE_CTRL:
+ case NAU8825_HSVOL_CTRL:
+ case NAU8825_DACL_CTRL:
+ case NAU8825_DACR_CTRL:
+ case NAU8825_SAR_ADC_OUTPUT:
+ case NAU8825_ANALOG_CTRL2:
+ case NAU8825_ANALOG_ADC_1:
+ case NAU8825_ANALOG_ADC_2:
+ case NAU8825_DAC_CTRL:
+ case NAU8825_MIC_BIAS:
+ case NAU8825_BOOST:
+ case NAU8825_CLASS_G_CTRL:
+ case NAU8825_BIAS_ADJ:
+ case NAU8825_POWER_UP_CTRL:
+ case NAU8825_CHARGE_BUMP:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool nau8825_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8825_RESET:
+ case NAU8825_ENA_CTRL:
+ case NAU8825_CLK_EN:
+ case NAU8825_CLK_DIVIDER:
+ case NAU8825_FL_1:
+ case NAU8825_FL_2:
+ case NAU8825_FL_3:
+ case NAU8825_FL_4:
+ case NAU8825_FL_5:
+ case NAU8825_FL_6:
+ case NAU8825_HEADSET_CTRL:
+ case NAU8825_JACK_DET_CTRL:
+ case NAU8825_IRQ_SETTING_1:
+ case NAU8825_IRQ_STATUS:
+ case NAU8825_IRQ_CLEAR:
+ case NAU8825_IRQ_SETTING:
+ case NAU8825_SAR_ADC:
+ case NAU8825_VDET_COEFFICIENT:
+ case NAU8825_VDET_THRESHOLD_1:
+ case NAU8825_VDET_THRESHOLD_2:
+ case NAU8825_GPIO2_CTRL:
+ case NAU8825_I2S_PCM_CTRL_1:
+ case NAU8825_I2S_PCM_CTRL_2:
+ case NAU8825_ADC_RATE:
+ case NAU8825_DAC_CTRL1:
+ case NAU8825_DAC_CTRL2:
+ case NAU8825_ADC_DGAIN_CTRL:
+ case NAU8825_DAC_MUTE_CTRL:
+ case NAU8825_HSVOL_CTRL:
+ case NAU8825_DACL_CTRL:
+ case NAU8825_DACR_CTRL:
+ case NAU8825_SAR_ADC_OUTPUT:
+ case NAU8825_ANALOG_CTRL2:
+ case NAU8825_ANALOG_ADC_1:
+ case NAU8825_ANALOG_ADC_2:
+ case NAU8825_DAC_CTRL:
+ case NAU8825_MIC_BIAS:
+ case NAU8825_BOOST:
+ case NAU8825_CLASS_G_CTRL:
+ case NAU8825_BIAS_ADJ:
+ case NAU8825_POWER_UP_CTRL:
+ case NAU8825_CHARGE_BUMP:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config nau8825_regmap = {
+ .reg_bits = 16,
+ .val_bits = 16,
+ .use_single_rw = true,
+ .max_register = NAU8825_MAX_REGISTER,
+ .volatile_reg = nau8825_volatile_register,
+ .readable_reg = nau8825_readable_register,
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = nau8825_reg,
+ .num_reg_defaults = ARRAY_SIZE(nau8825_reg),
+};
+
+static struct snd_soc_dai_ops nau8825_dai_ops = {
+ .hw_params = nau8825_hw_params,
+ .set_sysclk = nau8825_dai_set_sysclk,
+ .set_fmt = nau8825_set_dai_fmt,
+ .digital_mute = nau8825_dac_mute,
+};
+
+static struct snd_soc_dai_driver nau8825_dai_driver[] = {
+ {
+ .name = "nau8825-aif1",
+ .playback = {
+ .stream_name = "AIF1 Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = NAU8825_RATES,
+ .formats = NAU8825_FORMATS,
+ },
+ .capture = {
+ .stream_name = "AIF1 Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = NAU8825_RATES,
+ .formats = NAU8825_FORMATS,
+ },
+ .ops = &nau8825_dai_ops,
+ }
+};
+
+
+static int nau8825_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *i2c_id)
+{
+ struct nau8825_platform_data *pdata = dev_get_platdata(&i2c->dev);
+ struct nau8825_priv *nau8825;
+ int ret;
+
+ nau8825 = devm_kzalloc(&i2c->dev, sizeof(struct nau8825_priv),
+ GFP_KERNEL);
+ if (nau8825 == NULL)
+ return -ENOMEM;
+ nau8825->i2c = i2c;
+ i2c_set_clientdata(i2c, nau8825);
+ if (pdata)
+ nau8825->pdata = *pdata;
+ nau8825->regmap = devm_regmap_init_i2c(i2c, &nau8825_regmap);
+ if (IS_ERR(nau8825->regmap)) {
+ ret = PTR_ERR(nau8825->regmap);
+ dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
+ goto err_enable;
+ }
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_driver_nau8825,
+ nau8825_dai_driver,
+ ARRAY_SIZE(nau8825_dai_driver));
+err_enable:
+ return ret;
+}
+
+static int nau8825_i2c_remove(struct i2c_client *i2c)
+{
+ snd_soc_unregister_codec(&i2c->dev);
+ return 0;
+}
+
+static const struct i2c_device_id nau8825_i2c_id[] = {
+ {"nau8825", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, nau8825_i2c_id);
+
+static const struct acpi_device_id nau8825_acpi_match[] = {
+ { "10508825", 0 },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, nau8825_acpi_match);
+
+static struct i2c_driver nau8825_i2c_driver = {
+ .driver = {
+ .name = "nau8825",
+ .owner = THIS_MODULE,
+ .acpi_match_table = ACPI_PTR(nau8825_acpi_match),
+ },
+ .probe = nau8825_i2c_probe,
+ .remove = (nau8825_i2c_remove),
+ .id_table = nau8825_i2c_id,
+};
+module_i2c_driver(nau8825_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC NAU8825 codec driver");
+MODULE_AUTHOR("Nuvoton");
+MODULE_LICENSE("GPL v2");
+
+
diff --git a/sound/soc/codecs/nau8825.h b/sound/soc/codecs/nau8825.h
new file mode 100644
index 0000000..b16d4d1
--- /dev/null
+++ b/sound/soc/codecs/nau8825.h
@@ -0,0 +1,150 @@
+/*
+ * linux/sound/soc/codecs/nau8825.h
+ *
+ * Copyright 2015 Nuvoton Technology Corp.
+ * Author: Meng-Huang Kuo <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _NAU8825_H
+#define _NAU8825_H
+
+#include <sound/nau8825_plat.h>
+
+#define NAU8825_RESET 0x00
+#define NAU8825_ENA_CTRL 0x01
+#define NAU8825_CLK_EN 0x02
+#define NAU8825_CLK_DIVIDER 0x03
+#define NAU8825_FL_1 0x04
+#define NAU8825_FL_2 0x05
+#define NAU8825_FL_3 0x06
+#define NAU8825_FL_4 0x07
+#define NAU8825_FL_5 0x08
+#define NAU8825_FL_6 0x09
+#define NAU8825_HEADSET_CTRL 0x0C
+#define NAU8825_JACK_DET_CTRL 0x0D
+#define NAU8825_IRQ_SETTING_1 0x0F
+#define NAU8825_IRQ_STATUS 0x10
+#define NAU8825_IRQ_CLEAR 0x11
+#define NAU8825_IRQ_SETTING 0x12
+#define NAU8825_SAR_ADC 0x13
+#define NAU8825_VDET_COEFFICIENT 0x14
+#define NAU8825_VDET_THRESHOLD_1 0x15
+#define NAU8825_VDET_THRESHOLD_2 0x16
+#define NAU8825_GPIO2_CTRL 0x1A
+#define NAU8825_I2S_PCM_CTRL_1 0x1C
+#define NAU8825_I2S_PCM_CTRL_2 0x1D
+#define NAU8825_ADC_RATE 0x2B
+#define NAU8825_DAC_CTRL1 0x2C
+#define NAU8825_DAC_CTRL2 0x2D
+#define NAU8825_ADC_DGAIN_CTRL 0x30
+#define NAU8825_DAC_MUTE_CTRL 0x31
+#define NAU8825_HSVOL_CTRL 0x32
+#define NAU8825_DACL_CTRL 0x33
+#define NAU8825_DACR_CTRL 0x34
+#define NAU8825_CLASS_G_CTRL 0x50
+#define NAU8825_SAR_ADC_OUTPUT 0x59
+#define NAU8825_BIAS_ADJ 0x66
+#define NAU8825_ANALOG_CTRL2 0x6A
+#define NAU8825_ANALOG_ADC_1 0x71
+#define NAU8825_ANALOG_ADC_2 0x72
+#define NAU8825_DAC_CTRL 0x73
+#define NAU8825_MIC_BIAS 0x74
+#define NAU8825_BOOST 0x76
+#define NAU8825_POWER_UP_CTRL 0x7F
+#define NAU8825_CHARGE_BUMP 0x80
+#define NAU8825_MAX_REGISTER 0xFF
+
+/* reg. NAU8825_I2S_PCM_CTRL_1 (0x1C) */
+#define NAU8825_I2S_BP_MASK (0x1 << 7)
+#define NAU8825_I2S_BP_INV (0x1 << 7)
+#define NAU8825_I2S_PCMB_MASK (0x1 << 6)
+#define NAU8825_I2S_PCMB_EN (0x1 << 6)
+#define NAU8825_I2S_DL_MASK (0x3 << 2)
+#define NAU8825_I2S_DF_MASK 0x3
+#define NAU8825_I2S_DF_RIGHT 0x0
+#define NAU8825_I2S_DF_LEFT 0x1
+#define NAU8825_I2S_DF_I2S 0x2
+#define NAU8825_I2S_DF_PCM_A 0x3
+#define NAU8825_I2S_DF_PCM_B 0x3
+
+/* reg. NAU8825_I2S_PCM_CTRL_2 (0x1D) */
+#define NAU8825_I2S_MS_MASK (0x1 << 3)
+
+/* reg. NAU8825_ADC_DGAIN_CTRL (0x30) */
+#define NAU8825_ADC_DGAIN_SFT 0
+
+/* reg. NAU8825_DAC_MUTE_CTRL (0x31) */
+#define NAU8825_SOFT_MUTE_MASK (0x1 << 13)
+#define NAU8825_SOFT_MUTE_EN (0x1 << 13)
+#define NAU8825_SOFT_MUTE_DIS (0x0 << 13)
+
+/* reg. NAU8825_HSVOL_CTRL (0x32) */
+#define NAU8825_R_MUTE (0x1 << 15)
+#define NAU8825_R_MUTE_SFT 15
+#define NAU8825_L_MUTE (0x1 << 14)
+#define NAU8825_L_MUTE_SFT 14
+#define NAU8825_L_HSVOL_SFT 6
+#define NAU8825_R_HSVOL_SFT 0
+
+/* reg. NAU8825_CLASS_G_CTRL (0x50) */
+#define NAU8825_CLASS_G_RIGHT_SHIFT 2
+#define NAU8825_CLASS_G_LEFT_SHIFT 1
+#define NAU8825_CLASS_G_SHIFT 0
+
+/* reg. NAU8825_BIAS_ADJ_2 (0x66) */
+#define NAU8825_VMID_MASK (0x1 << 6)
+#define NAU8825_VMID_EN (0x1 << 6)
+#define NAU8825_VMID_DIS (0x0 << 6)
+
+/* reg. NAU8825_DAC_CTRL (0x73) */
+#define NAU8825_DAC_R_SFT 13
+#define NAU8825_DAC_L_SFT 12
+#define NAU8825_DAC_CLK_R_SFT 9
+#define NAU8825_DAC_CLK_L_SFT 8
+
+/* reg. NAU8825_BOOST (0x76) */
+#define NAU8825_G_BIAS_MASK (0x1 << 12)
+#define NAU8825_G_BIAS_SFT 12
+#define NAU8825_G_BIAS_EN (0x1 << 12)
+#define NAU8825_G_BIAS_DIS (0x0 << 12)
+
+/* Volume Rescale */
+#define NAU8825_VOL_RSCL_RANGE 0x36
+#define NAU8825_ADC_VOL_RSCL_RANGE 0x256
+
+/* Data format */
+#define NAU8825_I2S_DL_16 (0x0 << 2)
+#define NAU8825_I2S_DL_20 (0x1 << 2)
+#define NAU8825_I2S_DL_24 (0x2 << 2)
+#define NAU8825_I2S_DL_32 (0x3 << 2)
+
+enum {
+ NAU8825_INTERNALCLOCK = 0,
+ NAU8825_MCLK,
+};
+
+#define NAU8825_RATES SNDRV_PCM_RATE_8000_192000
+#define NAU8825_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
+ | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+struct nau8825_priv {
+ struct snd_soc_codec *codec;
+ struct nau8825_platform_data pdata;
+ struct regmap *regmap;
+ struct i2c_client *i2c;
+ struct snd_soc_jack *hp_jack;
+ struct snd_soc_jack *mic_jack;
+ struct delayed_work delayed_work;
+
+ struct workqueue_struct *workqueue;
+ struct mutex mutex;
+ unsigned int irq;
+ bool jd_status;
+ bool bp_status;
+ int jack_type;
+};
+#endif /* _NAU8825_H */
--
1.9.3
---
Avast 防毒軟體已檢查此封電子郵件的病毒。
http://www.avast.com
On 04/10/2015 09:21 AM, Chih-Chiang Chang wrote:
> The NAU88L25 is an ultra-low power high performance audio codec designed
> for smartphone, tablet PC, and other portable devices by Nuvoton, now
> add linux driver support for it.
>
> Signed-off-by: Chih-Chiang Chang <[email protected]>
> ---
> include/sound/nau8825_plat.h | 22 ++
> sound/soc/codecs/Kconfig | 5 +
> sound/soc/codecs/Makefile | 2 +
> sound/soc/codecs/nau8825.c | 593 +++++++++++++++++++++++++++++++++++++++++++
> sound/soc/codecs/nau8825.h | 150 +++++++++++
> 5 files changed, 772 insertions(+)
> create mode 100644 include/sound/nau8825_plat.h
> create mode 100644 sound/soc/codecs/nau8825.c
> create mode 100644 sound/soc/codecs/nau8825.h
>
> diff --git a/include/sound/nau8825_plat.h b/include/sound/nau8825_plat.h
> new file mode 100644
> index 0000000..87afcd3
> --- /dev/null
> +++ b/include/sound/nau8825_plat.h
the preferred place for platform_data files is include/linux/platform_data/,
but the driver doesn't seem to use the platform data anyway, so maybe drop it?
[...]
> diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
> new file mode 100644
> index 0000000..a8c8f59
> --- /dev/null
> +++ b/sound/soc/codecs/nau8825.c
> @@ -0,0 +1,593 @@
> +/*
> + * linux/sound/soc/codecs/nau8825.c
No need to include the file path in the header of the file, this will just
become outdated if the file is ever moved.
[...]
> +static int nau8825_hw_params(struct snd_pcm_substream *substream,
> + struct snd_pcm_hw_params *params,
> + struct snd_soc_dai *dai);
> +static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai,
> + unsigned int fmt);
> +static int nau8825_set_bias_level(struct snd_soc_codec *codec,
> + enum snd_soc_bias_level level);
> +static int nau8825_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
> + unsigned int freq, int dir);
These forward declarations don't seem to be necessary.
[...]
> +static const struct snd_kcontrol_new nau8825_snd_controls[] = {
> +
> + SOC_SINGLE("HP Class OP", NAU8825_CLASS_G_CTRL, NAU8825_CLASS_G_SHIFT,
> + 1, 0),
What is "Class OP"?
> + SOC_SINGLE("DAC Right", NAU8825_DAC_CTRL, NAU8825_DAC_R_SFT, 1, 0),
> + SOC_SINGLE("DAC Left", NAU8825_DAC_CTRL, NAU8825_DAC_L_SFT, 1, 0),
The same bits are controlled by the DAC DAPM widgets, there shouldn't be any
controls for them.
> + SOC_SINGLE("DAC Right Clock", NAU8825_DAC_CTRL, NAU8825_DAC_CLK_R_SFT,
> + 1, 0),
> + SOC_SINGLE("DAC Left Clock", NAU8825_DAC_CTRL, NAU8825_DAC_CLK_L_SFT,
> + 1, 0),
The clock controls should probably not be user controllable but rather be
DAPM supply widgets.
> +};
> +
> +static const struct snd_kcontrol_new nau8825_hpo_mix[] = {
> + SOC_DAPM_SINGLE("HP L Switch", NAU8825_HSVOL_CTRL,
> + NAU8825_L_MUTE_SFT, 1, 1),
> + SOC_DAPM_SINGLE("HP R Switch", NAU8825_HSVOL_CTRL,
> + NAU8825_R_MUTE_SFT, 1, 1),
> +};
> +
> +static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
> +
> + SND_SOC_DAPM_INPUT("Mic Jack"),
Input and output widgets should have the same name as the matching pin of
the CODEC.
> + SND_SOC_DAPM_MICBIAS("MIC BIAS", NAU8825_BOOST, NAU8825_G_BIAS_SFT, 0),
New drivers shouldn't use DAPM_MICBIAS widgets as they are known to be
broken. Use a DAPM_SUPPLY widget instead.
> + SND_SOC_DAPM_SUPPLY("micbias", SND_SOC_NOPM, 0, 0,
> + NULL, SND_SOC_DAPM_PRE_PMU
> + | SND_SOC_DAPM_POST_PMD),
> + SND_SOC_DAPM_SUPPLY("vmid", SND_SOC_NOPM, 0, 0, NULL,
> + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
Both the vmid and micbias supply seem to be unused and don't do anything either.
> + /* ADCs */
> + SND_SOC_DAPM_ADC("ADC L", NULL, SND_SOC_NOPM, 0, 0),
> + SND_SOC_DAPM_ADC("ADC R", NULL, SND_SOC_NOPM, 0, 0),
> + /* ADC IF1 */
> + SND_SOC_DAPM_PGA("IF1 ADC", SND_SOC_NOPM, 0, 0, NULL, 0),
This one seems to be unused, and doesn't do anything either.
> + /* Audio Interface */
> + SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
> + SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
> + /* DACs */
> + SND_SOC_DAPM_DAC_E("DAC L1", NULL, NAU8825_DAC_CTRL,
> + NAU8825_DAC_L_SFT, 0, NULL,
> + SND_SOC_DAPM_PRE_PMD),
Just use DAC instead of DAC_E if you don't have to implement a callback
> + SND_SOC_DAPM_DAC_E("DAC R1", NULL, NAU8825_DAC_CTRL,
> + NAU8825_DAC_R_SFT, 0, NULL,
> + SND_SOC_DAPM_PRE_PMD),
Same here.
> + /* SPO/HPO/LOUT/Mono Mixer */
> + SND_SOC_DAPM_MIXER("HPO MIX", SND_SOC_NOPM, 0, 0, nau8825_hpo_mix,
> + ARRAY_SIZE(nau8825_hpo_mix)),
> + SND_SOC_DAPM_PGA_S("HP amp", 1, NAU8825_CLASS_G_CTRL,
> + NAU8825_CLASS_G_SHIFT, 0, NULL, 0),
No need for _S if there is no sub-sequencing involved.
> + /* Output Lines */
> + SND_SOC_DAPM_OUTPUT("HPOL"),
> + SND_SOC_DAPM_OUTPUT("HPOR"),
> +};
> +
[...
> +static int nau8825_hw_params(struct snd_pcm_substream *substream,
> + struct snd_pcm_hw_params *params,
> + struct snd_soc_dai *tmp)
> +{
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + struct snd_soc_codec *codec = rtd->codec;
rtd->codec does not necessarily point to your CODEC device, use dai->codec
instead. As rule of thumb you should never have to look at the
snd_soc_pcm_runtime in a CODEC driver.
[...]
> +
> +static void config_fll_clk_12m(struct snd_soc_codec *codec)
> +{
> + snd_soc_update_bits(codec, NAU8825_CLK_DIVIDER, 0x000F, 0x0003);
> + snd_soc_update_bits(codec, NAU8825_FL_1, 0x007F, 0x0001);
> + snd_soc_write(codec, NAU8825_FL_2, 0xC49B);
> + snd_soc_update_bits(codec, NAU8825_FL_3, 0x03FF, 0x0020);
> + snd_soc_update_bits(codec, NAU8825_FL_4, 0x0C00, 0x0800);
> + snd_soc_update_bits(codec, NAU8825_FL_5, 0x2000, 0x0000);
> + snd_soc_update_bits(codec, NAU8825_FL_6, 0x4000, 0x4000);
So what do these magic values do?
> +}
> +
> +void set_sys_clk(struct snd_soc_codec *codec, int sys_clk)
static
> +{
> + pr_debug("%s :: sys_clk=%x\n", __func__, sys_clk);
[...
> +static int nau8825_codec_suspend(struct snd_soc_codec *codec)
> +{
> + nau8825_set_bias_level(codec, SND_SOC_BIAS_OFF);
> + return 0;
> +}
set the suspend_bias_off flag in your codec driver to let the core take care
of this.
> +
> +static int nau8825_resume(struct snd_soc_codec *codec)
> +{
> + nau8825_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
> + return 0;
> +}
This is not necessary the core already takes care of it.
> +
[...]
> +static int nau8825_codec_probe(struct snd_soc_codec *codec)
> +{
> + int i;
> + struct nau8825_priv *nau8825;
> +
> + nau8825 = snd_soc_codec_get_drvdata(codec);
> + nau8825->codec = codec;
> + /*writing initial register values to the codec*/
> + for (i = 0; i < ARRAY_SIZE(nau8825_reg); i++)
> + snd_soc_write(codec, nau8825_reg[i].reg, nau8825_reg[i].def);
If that is really necessary use regmap_sync() and preferably in the i2c
probe function. But I'd expect that a soft reset should put the device in
the default register configuration?
> + return 0;
> +}
> +
[...]
> +static struct snd_soc_codec_driver soc_codec_driver_nau8825 = {
const
> + .probe = nau8825_codec_probe,
> + .remove = nau8825_codec_remove,
> + .suspend = nau8825_codec_suspend,
> + .resume = nau8825_resume,
> + .set_bias_level = nau8825_set_bias_level,
> + .controls = nau8825_snd_controls,
> + .num_controls = ARRAY_SIZE(nau8825_snd_controls),
> + .dapm_widgets = nau8825_dapm_widgets,
> + .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets),
> + .dapm_routes = nau8825_dapm_routes,
> + .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes),
> +};
> +
> +static struct snd_soc_dai_ops nau8825_dai_ops = {
const
> + .hw_params = nau8825_hw_params,
> + .set_sysclk = nau8825_dai_set_sysclk,
> + .set_fmt = nau8825_set_dai_fmt,
> + .digital_mute = nau8825_dac_mute,
> +};
> +
> +static struct snd_soc_dai_driver nau8825_dai_driver[] = {
> + {
> + .name = "nau8825-aif1",
> + .playback = {
> + .stream_name = "AIF1 Playback",
> + .channels_min = 1,
> + .channels_max = 2,
> + .rates = NAU8825_RATES,
> + .formats = NAU8825_FORMATS,
> + },
> + .capture = {
> + .stream_name = "AIF1 Capture",
> + .channels_min = 1,
> + .channels_max = 2,
> + .rates = NAU8825_RATES,
> + .formats = NAU8825_FORMATS,
> + },
> + .ops = &nau8825_dai_ops,
> + }
> +};
> +
> +
> +static int nau8825_i2c_probe(struct i2c_client *i2c,
> + const struct i2c_device_id *i2c_id)
> +{
> + struct nau8825_platform_data *pdata = dev_get_platdata(&i2c->dev);
> + struct nau8825_priv *nau8825;
> + int ret;
> +
> + nau8825 = devm_kzalloc(&i2c->dev, sizeof(struct nau8825_priv),
preferred form for this is sizeof(*nau8825)
[...]
> +MODULE_DESCRIPTION("ASoC NAU8825 codec driver");
> +MODULE_AUTHOR("Nuvoton");
> +MODULE_LICENSE("GPL v2");
> +
> +
No need for the extra new lines at the end
> diff --git a/sound/soc/codecs/nau8825.h b/sound/soc/codecs/nau8825.h
> new file mode 100644
> index 0000000..b16d4d1
> --- /dev/null
> +++ b/sound/soc/codecs/nau8825.h
> @@ -0,0 +1,150 @@
> +/*
[...]
> +
> +struct nau8825_priv {
> + struct snd_soc_codec *codec;
> + struct nau8825_platform_data pdata;
> + struct regmap *regmap;
> + struct i2c_client *i2c;
> + struct snd_soc_jack *hp_jack;
> + struct snd_soc_jack *mic_jack;
> + struct delayed_work delayed_work;
> +
> + struct workqueue_struct *workqueue;
> + struct mutex mutex;
> + unsigned int irq;
> + bool jd_status;
> + bool bp_status;
> + int jack_type;
> +};
It looks like pretty much all of the fields in the struct are not used by
the driver.
> +#endif /* _NAU8825_H */
>
On 2015/4/10 下午 04:38, Lars-Peter Clausen wrote:
> On 04/10/2015 09:21 AM, Chih-Chiang Chang wrote:
>> The NAU88L25 is an ultra-low power high performance audio codec designed
>> for smartphone, tablet PC, and other portable devices by Nuvoton, now
>> add linux driver support for it.
>>
>> Signed-off-by: Chih-Chiang Chang <[email protected]>
>> ---
>> include/sound/nau8825_plat.h | 22 ++
>> sound/soc/codecs/Kconfig | 5 +
>> sound/soc/codecs/Makefile | 2 +
>> sound/soc/codecs/nau8825.c | 593 +++++++++++++++++++++++++++++++++++++++++++
>> sound/soc/codecs/nau8825.h | 150 +++++++++++
>> 5 files changed, 772 insertions(+)
>> create mode 100644 include/sound/nau8825_plat.h
>> create mode 100644 sound/soc/codecs/nau8825.c
>> create mode 100644 sound/soc/codecs/nau8825.h
>>
>> diff --git a/include/sound/nau8825_plat.h b/include/sound/nau8825_plat.h
>> new file mode 100644
>> index 0000000..87afcd3
>> --- /dev/null
>> +++ b/include/sound/nau8825_plat.h
>
> the preferred place for platform_data files is include/linux/platform_data/,
> but the driver doesn't seem to use the platform data anyway, so maybe drop it?
The data is reserved for future use, so drop it now.
For the preferred place for platform_data files, there are more than 300
files in the sound/soc/codecs folder. But I find only few files refer
the platform_data files in include/linux/platform_data/ folder,
most files put platform_data files in include/sound/ folder.
cczhang@MS00-Linux:~/broonie_linux/sound/sound/soc/codecs$ grep -nr
"linux/platform_data/" *
adau1761.c:20:#include <linux/platform_data/adau17x1.h>
adau1781.c:20:#include <linux/platform_data/adau17x1.h>
adau17x1.h:5:#include <linux/platform_data/adau17x1.h>
adau1977.c:16:#include <linux/platform_data/adau1977.h>
ssm2518.c:17:#include <linux/platform_data/ssm2518.h>
>
> [...]
>> diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
>> new file mode 100644
>> index 0000000..a8c8f59
>> --- /dev/null
>> +++ b/sound/soc/codecs/nau8825.c
>> @@ -0,0 +1,593 @@
>> +/*
>> + * linux/sound/soc/codecs/nau8825.c
>
> No need to include the file path in the header of the file, this will just
> become outdated if the file is ever moved.
Removed the file path in source.
>
> [...]
>> +static int nau8825_hw_params(struct snd_pcm_substream *substream,
>> + struct snd_pcm_hw_params *params,
>> + struct snd_soc_dai *dai);
>> +static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai,
>> + unsigned int fmt);
>> +static int nau8825_set_bias_level(struct snd_soc_codec *codec,
>> + enum snd_soc_bias_level level);
>> +static int nau8825_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
>> + unsigned int freq, int dir);
>
> These forward declarations don't seem to be necessary.
Removed.
>
> [...]
>> +static const struct snd_kcontrol_new nau8825_snd_controls[] = {
>> +
>
>> + SOC_SINGLE("HP Class OP", NAU8825_CLASS_G_CTRL, NAU8825_CLASS_G_SHIFT,
>> + 1, 0),
>
> What is "Class OP"?
"Class OP" means amplifier. The code is removed due to DAC DAPM widgets
have the same bit control for NAU8825_CLASS_G_CTRL.
>
>> + SOC_SINGLE("DAC Right", NAU8825_DAC_CTRL, NAU8825_DAC_R_SFT, 1, 0),
>> + SOC_SINGLE("DAC Left", NAU8825_DAC_CTRL, NAU8825_DAC_L_SFT, 1, 0),
>
> The same bits are controlled by the DAC DAPM widgets, there shouldn't be any
> controls for them.
Removed.
>
>> + SOC_SINGLE("DAC Right Clock", NAU8825_DAC_CTRL, NAU8825_DAC_CLK_R_SFT,
>> + 1, 0),
>> + SOC_SINGLE("DAC Left Clock", NAU8825_DAC_CTRL, NAU8825_DAC_CLK_L_SFT,
>> + 1, 0),
>
> The clock controls should probably not be user controllable but rather be
> DAPM supply widgets.
The code is not used, removed.
>
>> +};
>> +
>> +static const struct snd_kcontrol_new nau8825_hpo_mix[] = {
>> + SOC_DAPM_SINGLE("HP L Switch", NAU8825_HSVOL_CTRL,
>> + NAU8825_L_MUTE_SFT, 1, 1),
>> + SOC_DAPM_SINGLE("HP R Switch", NAU8825_HSVOL_CTRL,
>> + NAU8825_R_MUTE_SFT, 1, 1),
>> +};
>> +
>> +static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
>> +
>> + SND_SOC_DAPM_INPUT("Mic Jack"),
>
> Input and output widgets should have the same name as the matching pin of
> the CODEC.
Modified as below.
SND_SOC_DAPM_INPUT("MIC"),
>
>> + SND_SOC_DAPM_MICBIAS("MIC BIAS", NAU8825_BOOST, NAU8825_G_BIAS_SFT, 0),
>
> New drivers shouldn't use DAPM_MICBIAS widgets as they are known to be
> broken. Use a DAPM_SUPPLY widget instead.
Modified as below.
SND_SOC_DAPM_SUPPLY("MIC BIAS", NAU8825_BOOST, NAU8825_G_BIAS_SFT, 0,
NULL, 0),
>
>> + SND_SOC_DAPM_SUPPLY("micbias", SND_SOC_NOPM, 0, 0,
>> + NULL, SND_SOC_DAPM_PRE_PMU
>> + | SND_SOC_DAPM_POST_PMD),
>> + SND_SOC_DAPM_SUPPLY("vmid", SND_SOC_NOPM, 0, 0, NULL,
>> + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
>
> Both the vmid and micbias supply seem to be unused and don't do anything either.
Removed.
>
>> + /* ADCs */
>> + SND_SOC_DAPM_ADC("ADC L", NULL, SND_SOC_NOPM, 0, 0),
>> + SND_SOC_DAPM_ADC("ADC R", NULL, SND_SOC_NOPM, 0, 0),
>> + /* ADC IF1 */
>> + SND_SOC_DAPM_PGA("IF1 ADC", SND_SOC_NOPM, 0, 0, NULL, 0),
>
> This one seems to be unused, and doesn't do anything either.
Removed.
>
>> + /* Audio Interface */
>> + SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
>> + SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
>> + /* DACs */
>> + SND_SOC_DAPM_DAC_E("DAC L1", NULL, NAU8825_DAC_CTRL,
>> + NAU8825_DAC_L_SFT, 0, NULL,
>> + SND_SOC_DAPM_PRE_PMD),
>
> Just use DAC instead of DAC_E if you don't have to implement a callback
Modified as below.
SND_SOC_DAPM_DAC("DAC L1", NULL, NAU8825_DAC_CTRL,
NAU8825_DAC_L_SFT, 0),
>
>> + SND_SOC_DAPM_DAC_E("DAC R1", NULL, NAU8825_DAC_CTRL,
>> + NAU8825_DAC_R_SFT, 0, NULL,
>> + SND_SOC_DAPM_PRE_PMD),
>
> Same here.
Modified as below.
SND_SOC_DAPM_DAC("DAC R1", NULL, NAU8825_DAC_CTRL,
NAU8825_DAC_R_SFT, 0),
>
>> + /* SPO/HPO/LOUT/Mono Mixer */
>> + SND_SOC_DAPM_MIXER("HPO MIX", SND_SOC_NOPM, 0, 0, nau8825_hpo_mix,
>> + ARRAY_SIZE(nau8825_hpo_mix)),
>> + SND_SOC_DAPM_PGA_S("HP amp", 1, NAU8825_CLASS_G_CTRL,
>> + NAU8825_CLASS_G_SHIFT, 0, NULL, 0),
>
> No need for _S if there is no sub-sequencing involved.
Modified as below.
SND_SOC_DAPM_SUPPLY("HP amp", NAU8825_CLASS_G_CTRL,
NAU8825_CLASS_G_SHIFT, 0, NULL, 0),
>
>> + /* Output Lines */
>> + SND_SOC_DAPM_OUTPUT("HPOL"),
>> + SND_SOC_DAPM_OUTPUT("HPOR"),
>> +};
>> +
> [...
>> +static int nau8825_hw_params(struct snd_pcm_substream *substream,
>> + struct snd_pcm_hw_params *params,
>> + struct snd_soc_dai *tmp)
>> +{
>> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
>> + struct snd_soc_codec *codec = rtd->codec;
>
>
> rtd->codec does not necessarily point to your CODEC device, use dai->codec
> instead. As rule of thumb you should never have to look at the
> snd_soc_pcm_runtime in a CODEC driver.
>
Modified as below.
static int nau8825_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;
>
> [...]
>> +
>> +static void config_fll_clk_12m(struct snd_soc_codec *codec)
>> +{
>> + snd_soc_update_bits(codec, NAU8825_CLK_DIVIDER, 0x000F, 0x0003);
>> + snd_soc_update_bits(codec, NAU8825_FL_1, 0x007F, 0x0001);
>> + snd_soc_write(codec, NAU8825_FL_2, 0xC49B);
>> + snd_soc_update_bits(codec, NAU8825_FL_3, 0x03FF, 0x0020);
>> + snd_soc_update_bits(codec, NAU8825_FL_4, 0x0C00, 0x0800);
>> + snd_soc_update_bits(codec, NAU8825_FL_5, 0x2000, 0x0000);
>> + snd_soc_update_bits(codec, NAU8825_FL_6, 0x4000, 0x4000);
>
> So what do these magic values do?
Modified as below, add definition and remark.
static void config_fll_clk_12m(struct snd_soc_codec *codec)
{
struct nau8825_priv *nau8825 = snd_soc_codec_get_drvdata(codec);
regmap_update_bits(nau8825->regmap, NAU8825_CLK_DIVIDER,
NAU8825_CLK_MCLK_SRC_MASK, 0x0003);
regmap_update_bits(nau8825->regmap, NAU8825_FLL_1,
NAU8825_FLL_RATIO_MASK, 0x0001);
/* FLL 16-bit fractional input */
regmap_write(nau8825->regmap, NAU8825_FLL_2, 0xC49B);
/* FLL 10-bit integer input */
regmap_update_bits(nau8825->regmap, NAU8825_FLL_3,
NAU8825_FLL_INTEGER_MASK, 0x0020);
/* FLL pre-scaler */
regmap_update_bits(nau8825->regmap, NAU8825_FLL_4,
NAU8825_FLL_REF_DIV_MASK, 0x0800);
/* select divied VCO input */
regmap_update_bits(nau8825->regmap, NAU8825_FLL_5,
NAU8825_FLL_FILTER_SW_MASK, 0x0000);
/* FLL sigma delta modulator enable */
regmap_update_bits(nau8825->regmap, NAU8825_FLL_6,
NAU8825_SDM_EN_MASK, 0x4000);
>
>> +}
>> +
>> +void set_sys_clk(struct snd_soc_codec *codec, int sys_clk)
>
> static
Modified as below.
static void set_sys_clk(struct snd_soc_codec *codec, int sys_clk)
>
>> +{
>> + pr_debug("%s :: sys_clk=%x\n", __func__, sys_clk);
> [...
>> +static int nau8825_codec_suspend(struct snd_soc_codec *codec)
>> +{
>> + nau8825_set_bias_level(codec, SND_SOC_BIAS_OFF);
>> + return 0;
>> +}
>
> set the suspend_bias_off flag in your codec driver to let the core take care
> of this.
Removed nau8825_codec_suspend() and added suspend_bias_off flag in
soc_codec_driver_nau8825.
.remove = nau8825_codec_remove,
- .suspend = nau8825_codec_suspend,
- .resume = nau8825_resume,
+ .suspend_bias_off = true,
.set_bias_level = nau8825_set_bias_level,
.controls = nau8825_snd_controls,
.num_controls = ARRAY_SIZE(nau8825_snd_controls),
>
>> +
>> +static int nau8825_resume(struct snd_soc_codec *codec)
>> +{
>> + nau8825_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
>> + return 0;
>> +}
>
> This is not necessary the core already takes care of it.
Removed.
>
>> +
> [...]
>> +static int nau8825_codec_probe(struct snd_soc_codec *codec)
>> +{
>> + int i;
>> + struct nau8825_priv *nau8825;
>> +
>> + nau8825 = snd_soc_codec_get_drvdata(codec);
>> + nau8825->codec = codec;
>> + /*writing initial register values to the codec*/
>> + for (i = 0; i < ARRAY_SIZE(nau8825_reg); i++)
>> + snd_soc_write(codec, nau8825_reg[i].reg, nau8825_reg[i].def);
>
> If that is really necessary use regmap_sync() and preferably in the i2c
> probe function. But I'd expect that a soft reset should put the device in
> the default register configuration?
About the regmap_sync(), I cannot find it in Linux. Do you mean the
regcache_sync()? But it is used to sync the register cache with the
hardware, not set reg_defaults array to hardware.
Remove nau8825_codec_probe() and add below code in nau8825_i2c_probe().
dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
goto err_enable;
}
+ /* software reset */
+ regmap_write(nau8825->regmap, NAU8825_RESET, 0x01);
+ regmap_write(nau8825->regmap, NAU8825_RESET, 0x02);
+ /*writing initial register values to the codec*/
+ for (i = 0; i < ARRAY_SIZE(nau8825_reg); i++)
+ regmap_write(nau8825->regmap, nau8825_reg[i].reg,
+ nau8825_reg[i].def);
+
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_driver_nau8825,
nau8825_dai_driver,
ARRAY_SIZE(nau8825_dai_driver));
>
>> + return 0;
>> +}
>> +
> [...]
>> +static struct snd_soc_codec_driver soc_codec_driver_nau8825 = {
>
> const
Modified as below.
static const struct snd_soc_codec_driver soc_codec_driver_nau8825 = {
>
>> + .probe = nau8825_codec_probe,
>> + .remove = nau8825_codec_remove,
>> + .suspend = nau8825_codec_suspend,
>> + .resume = nau8825_resume,
>> + .set_bias_level = nau8825_set_bias_level,
>> + .controls = nau8825_snd_controls,
>> + .num_controls = ARRAY_SIZE(nau8825_snd_controls),
>> + .dapm_widgets = nau8825_dapm_widgets,
>> + .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets),
>> + .dapm_routes = nau8825_dapm_routes,
>> + .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes),
>> +};
>> +
>
>> +static struct snd_soc_dai_ops nau8825_dai_ops = {
>
> const
Modified as below.
static const struct snd_soc_dai_ops nau8825_dai_ops = {
>
>> + .hw_params = nau8825_hw_params,
>> + .set_sysclk = nau8825_dai_set_sysclk,
>> + .set_fmt = nau8825_set_dai_fmt,
>> + .digital_mute = nau8825_dac_mute,
>> +};
>> +
>> +static struct snd_soc_dai_driver nau8825_dai_driver[] = {
>> + {
>> + .name = "nau8825-aif1",
>> + .playback = {
>> + .stream_name = "AIF1 Playback",
>> + .channels_min = 1,
>> + .channels_max = 2,
>> + .rates = NAU8825_RATES,
>> + .formats = NAU8825_FORMATS,
>> + },
>> + .capture = {
>> + .stream_name = "AIF1 Capture",
>> + .channels_min = 1,
>> + .channels_max = 2,
>> + .rates = NAU8825_RATES,
>> + .formats = NAU8825_FORMATS,
>> + },
>> + .ops = &nau8825_dai_ops,
>> + }
>> +};
>> +
>> +
>> +static int nau8825_i2c_probe(struct i2c_client *i2c,
>> + const struct i2c_device_id *i2c_id)
>> +{
>> + struct nau8825_platform_data *pdata = dev_get_platdata(&i2c->dev);
>> + struct nau8825_priv *nau8825;
>> + int ret;
>> +
>> + nau8825 = devm_kzalloc(&i2c->dev, sizeof(struct nau8825_priv),
>
> preferred form for this is sizeof(*nau8825)
Modified as below.
nau8825 = devm_kzalloc(&i2c->dev, sizeof(*nau8825),
>
> [...]
>> +MODULE_DESCRIPTION("ASoC NAU8825 codec driver");
>> +MODULE_AUTHOR("Nuvoton");
>> +MODULE_LICENSE("GPL v2");
>> +
>> +
>
> No need for the extra new lines at the end
Removed the new lines.
>
>> diff --git a/sound/soc/codecs/nau8825.h b/sound/soc/codecs/nau8825.h
>> new file mode 100644
>> index 0000000..b16d4d1
>> --- /dev/null
>> +++ b/sound/soc/codecs/nau8825.h
>> @@ -0,0 +1,150 @@
>> +/*
> [...]
>> +
>> +struct nau8825_priv {
>> + struct snd_soc_codec *codec;
>> + struct nau8825_platform_data pdata;
>> + struct regmap *regmap;
>> + struct i2c_client *i2c;
>> + struct snd_soc_jack *hp_jack;
>> + struct snd_soc_jack *mic_jack;
>> + struct delayed_work delayed_work;
>> +
>> + struct workqueue_struct *workqueue;
>> + struct mutex mutex;
>> + unsigned int irq;
>> + bool jd_status;
>> + bool bp_status;
>> + int jack_type;
>> +};
>
> It looks like pretty much all of the fields in the struct are not used by
> the driver.
Removed some field and modified as below.
@@ -136,15 +163,7 @@ struct nau8825_priv {
struct nau8825_platform_data pdata;
struct regmap *regmap;
struct i2c_client *i2c;
- struct snd_soc_jack *hp_jack;
- struct snd_soc_jack *mic_jack;
- struct delayed_work delayed_work;
-
- struct workqueue_struct *workqueue;
- struct mutex mutex;
- unsigned int irq;
- bool jd_status;
- bool bp_status;
- int jack_type;
+ struct snd_soc_jack *jack;
+ struct delayed_work jack_detect_work;
};
>
>> +#endif /* _NAU8825_H */
>>
>