--- /dev/null
+/*
+ * wm9705.c -- ALSA Soc WM9705 codec support
+ *
+ * Copyright 2008 Ian Molton <spyro@f2s.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; Version 2 of the License only.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+/*
+ * WM9705 register cache
+ */
+static const u16 wm9705_reg[] = {
+ 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
+ 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
+ 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
+ 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
+ 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
+ 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
+ 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
+ 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
+ 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
+ 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
+};
+
+static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
+ SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
+ SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
+ SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
+ SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
+ SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
+ SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
+ SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
+ SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
+ SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
+ SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
+ SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
+ SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
+ SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
+ SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
+ SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
+ SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
+};
+
+static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
+static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
+ "Line", "Stereo Mix", "Mono Mix", "Phone"};
+
+static const struct soc_enum wm9705_enum_mic =
+ SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic);
+static const struct soc_enum wm9705_enum_rec_l =
+ SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel);
+static const struct soc_enum wm9705_enum_rec_r =
+ SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel);
+
+/* Headphone Mixer */
+static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
+ SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
+ SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
+ SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
+ SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
+ SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
+};
+
+/* Mic source */
+static const struct snd_kcontrol_new wm9705_mic_src_controls =
+ SOC_DAPM_ENUM("Route", wm9705_enum_mic);
+
+/* Capture source */
+static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
+ SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
+static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
+ SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
+
+/* DAPM widgets */
+static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
+ SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
+ &wm9705_mic_src_controls),
+ SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
+ &wm9705_capture_selectl_controls),
+ SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
+ &wm9705_capture_selectr_controls),
+ SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
+ &wm9705_hp_mixer_controls[0],
+ ARRAY_SIZE(wm9705_hp_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_OUTPUT("HPOUTL"),
+ SND_SOC_DAPM_OUTPUT("HPOUTR"),
+ SND_SOC_DAPM_OUTPUT("LOUT"),
+ SND_SOC_DAPM_OUTPUT("ROUT"),
+ SND_SOC_DAPM_OUTPUT("MONOOUT"),
+ SND_SOC_DAPM_INPUT("PHONE"),
+ SND_SOC_DAPM_INPUT("LINEINL"),
+ SND_SOC_DAPM_INPUT("LINEINR"),
+ SND_SOC_DAPM_INPUT("CDINL"),
+ SND_SOC_DAPM_INPUT("CDINR"),
+ SND_SOC_DAPM_INPUT("PCBEEP"),
+ SND_SOC_DAPM_INPUT("MIC1"),
+ SND_SOC_DAPM_INPUT("MIC2"),
+};
+
+/* Audio map
+ * WM9705 has no switches to disable the route from the inputs to the HP mixer
+ * so in order to prevent active inputs from forcing the audio outputs to be
+ * constantly enabled, we use the mutes on those inputs to simulate such
+ * controls.
+ */
+static const struct snd_soc_dapm_route audio_map[] = {
+ /* HP mixer */
+ {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
+ {"HP Mixer", "CD Playback Switch", "CD PGA"},
+ {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
+ {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
+ {"HP Mixer", "Line Playback Switch", "Line PGA"},
+ {"HP Mixer", NULL, "Left DAC"},
+ {"HP Mixer", NULL, "Right DAC"},
+
+ /* mono mixer */
+ {"Mono Mixer", NULL, "HP Mixer"},
+
+ /* outputs */
+ {"Headphone PGA", NULL, "HP Mixer"},
+ {"HPOUTL", NULL, "Headphone PGA"},
+ {"HPOUTR", NULL, "Headphone PGA"},
+ {"Line out PGA", NULL, "HP Mixer"},
+ {"LOUT", NULL, "Line out PGA"},
+ {"ROUT", NULL, "Line out PGA"},
+ {"Mono PGA", NULL, "Mono Mixer"},
+ {"MONOOUT", NULL, "Mono PGA"},
+
+ /* inputs */
+ {"CD PGA", NULL, "CDINL"},
+ {"CD PGA", NULL, "CDINR"},
+ {"Line PGA", NULL, "LINEINL"},
+ {"Line PGA", NULL, "LINEINR"},
+ {"Phone PGA", NULL, "PHONE"},
+ {"Mic Source", "Mic 1", "MIC1"},
+ {"Mic Source", "Mic 2", "MIC2"},
+ {"Mic PGA", NULL, "Mic Source"},
+ {"PCBEEP PGA", NULL, "PCBEEP"},
+
+ /* Left capture selector */
+ {"Left Capture Source", "Mic", "Mic Source"},
+ {"Left Capture Source", "CD", "CDINL"},
+ {"Left Capture Source", "Line", "LINEINL"},
+ {"Left Capture Source", "Stereo Mix", "HP Mixer"},
+ {"Left Capture Source", "Mono Mix", "HP Mixer"},
+ {"Left Capture Source", "Phone", "PHONE"},
+
+ /* Right capture source */
+ {"Right Capture Source", "Mic", "Mic Source"},
+ {"Right Capture Source", "CD", "CDINR"},
+ {"Right Capture Source", "Line", "LINEINR"},
+ {"Right Capture Source", "Stereo Mix", "HP Mixer"},
+ {"Right Capture Source", "Mono Mix", "HP Mixer"},
+ {"Right Capture Source", "Phone", "PHONE"},
+
+ {"ADC PGA", NULL, "Left Capture Source"},
+ {"ADC PGA", NULL, "Right Capture Source"},
+
+ /* ADC's */
+ {"Left ADC", NULL, "ADC PGA"},
+ {"Right ADC", NULL, "ADC PGA"},
+};
+
+static int wm9705_add_widgets(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_new_controls(codec, wm9705_dapm_widgets,
+ ARRAY_SIZE(wm9705_dapm_widgets));
+ snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+ snd_soc_dapm_new_widgets(codec);
+
+ return 0;
+}
+
+/* We use a register cache to enhance read performance. */
+static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
+{
+ u16 *cache = codec->reg_cache;
+
+ switch (reg) {
+ case AC97_RESET:
+ case AC97_VENDOR_ID1:
+ case AC97_VENDOR_ID2:
+ return soc_ac97_ops.read(codec->ac97, reg);
+ default:
+ reg = reg >> 1;
+
+ if (reg >= (ARRAY_SIZE(wm9705_reg)))
+ return -EIO;
+
+ return cache[reg];
+ }
+}
+
+static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int val)
+{
+ u16 *cache = codec->reg_cache;
+
+ soc_ac97_ops.write(codec->ac97, reg, val);
+ reg = reg >> 1;
+ if (reg < (ARRAY_SIZE(wm9705_reg)))
+ cache[reg] = val;
+
+ return 0;
+}
+
+static int ac97_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_codec *codec = socdev->codec;
+ int reg;
+ u16 vra;
+
+ vra = ac97_read(codec, AC97_EXTENDED_STATUS);
+ ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ reg = AC97_PCM_FRONT_DAC_RATE;
+ else
+ reg = AC97_PCM_LR_ADC_RATE;
+
+ return ac97_write(codec, reg, runtime->rate);
+}
+
+#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
+ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
+ SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000)
+
+struct snd_soc_dai wm9705_dai[] = {
+ {
+ .name = "AC97 HiFi",
+ .ac97_control = 1,
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM9705_AC97_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "HiFi Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM9705_AC97_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = {
+ .prepare = ac97_prepare,
+ },
+ },
+ {
+ .name = "AC97 Aux",
+ .playback = {
+ .stream_name = "Aux Playback",
+ .channels_min = 1,
+ .channels_max = 1,
+ .rates = WM9705_AC97_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ }
+};
+EXPORT_SYMBOL_GPL(wm9705_dai);
+
+static int wm9705_reset(struct snd_soc_codec *codec)
+{
+ if (soc_ac97_ops.reset) {
+ soc_ac97_ops.reset(codec->ac97);
+ if (ac97_read(codec, 0) == wm9705_reg[0])
+ return 0; /* Success */
+ }
+
+ return -EIO;
+}
+
+static int wm9705_soc_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret = 0;
+
+ printk(KERN_INFO "WM9705 SoC Audio Codec\n");
+
+ socdev->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (socdev->codec == NULL)
+ return -ENOMEM;
+ codec = socdev->codec;
+ mutex_init(&codec->mutex);
+
+ codec->reg_cache = kmemdup(wm9705_reg, sizeof(wm9705_reg), GFP_KERNEL);
+ if (codec->reg_cache == NULL) {
+ ret = -ENOMEM;
+ goto cache_err;
+ }
+ codec->reg_cache_size = sizeof(wm9705_reg);
+ codec->reg_cache_step = 2;
+
+ codec->name = "WM9705";
+ codec->owner = THIS_MODULE;
+ codec->dai = wm9705_dai;
+ codec->num_dai = ARRAY_SIZE(wm9705_dai);
+ codec->write = ac97_write;
+ codec->read = ac97_read;
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ if (ret < 0) {
+ printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
+ goto codec_err;
+ }
+
+ /* register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0)
+ goto pcm_err;
+
+ ret = wm9705_reset(codec);
+ if (ret)
+ goto reset_err;
+
+ snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
+ ARRAY_SIZE(wm9705_snd_ac97_controls));
+ wm9705_add_widgets(codec);
+
+ ret = snd_soc_init_card(socdev);
+ if (ret < 0) {
+ printk(KERN_ERR "wm9705: failed to register card\n");
+ goto pcm_err;
+ }
+
+ return 0;
+
+reset_err:
+ snd_soc_free_pcms(socdev);
+pcm_err:
+ snd_soc_free_ac97_codec(codec);
+codec_err:
+ kfree(codec->reg_cache);
+cache_err:
+ kfree(socdev->codec);
+ socdev->codec = NULL;
+ return ret;
+}
+
+static int wm9705_soc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+
+ if (codec == NULL)
+ return 0;
+
+ snd_soc_dapm_free(socdev);
+ snd_soc_free_pcms(socdev);
+ snd_soc_free_ac97_codec(codec);
+ kfree(codec->reg_cache);
+ kfree(codec);
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm9705 = {
+ .probe = wm9705_soc_probe,
+ .remove = wm9705_soc_remove,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705);
+
+MODULE_DESCRIPTION("ASoC WM9705 driver");
+MODULE_AUTHOR("Ian Molton");
+MODULE_LICENSE("GPL v2");
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff