[ALSA] ASoC: core and dapm headers
This patch adds the ASoC and DAPM headers.
Features:-
o Defines Digital Audio Interface (DAI) API
o Defines Codec, Platform and Machine API
o Defines Dynamic Audio Power Management API
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/include/sound/soc.h b/include/sound/soc.h
new file mode 100644
index 0000000..ecdd1fa
--- /dev/null
+++ b/include/sound/soc.h
@@ -0,0 +1,480 @@
+/*
+ * linux/sound/soc.h -- ALSA SoC Layer
+ *
+ * Author: Liam Girdwood
+ * Created: Aug 11th 2005
+ * Copyright: Wolfson Microelectronics. PLC.
+ *
+ * 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_SOC_H
+#define __LINUX_SND_SOC_H
+
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/control.h>
+#include <sound/ac97_codec.h>
+
+#define SND_SOC_VERSION "0.11.8"
+
+/*
+ * Convenience kcontrol builders
+ */
+#define SOC_SINGLE_VALUE(reg,shift,mask,invert) ((reg) | ((shift) << 8) |\
+ ((shift) << 12) | ((mask) << 16) | ((invert) << 24))
+#define SOC_SINGLE_VALUE_EXT(reg,mask,invert) ((reg) | ((mask) << 16) |\
+ ((invert) << 31))
+#define SOC_SINGLE(xname, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
+ .put = snd_soc_put_volsw, \
+ .private_value = SOC_SINGLE_VALUE(reg, shift, mask, invert) }
+#define SOC_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
+ .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
+ .put = snd_soc_put_volsw, \
+ .private_value = (reg) | ((shift_left) << 8) | \
+ ((shift_right) << 12) | ((mask) << 16) | ((invert) << 24) }
+#define SOC_DOUBLE_R(xname, reg_left, reg_right, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
+ .info = snd_soc_info_volsw_2r, \
+ .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
+ .private_value = (reg_left) | ((shift) << 8) | \
+ ((mask) << 12) | ((invert) << 20) | ((reg_right) << 24) }
+#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \
+{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
+ .mask = xmask, .texts = xtexts }
+#define SOC_ENUM_SINGLE(xreg, xshift, xmask, xtexts) \
+ SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xtexts)
+#define SOC_ENUM_SINGLE_EXT(xmask, xtexts) \
+{ .mask = xmask, .texts = xtexts }
+#define SOC_ENUM(xname, xenum) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
+ .info = snd_soc_info_enum_double, \
+ .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
+ .private_value = (unsigned long)&xenum }
+#define SOC_SINGLE_EXT(xname, xreg, xmask, xinvert,\
+ xhandler_get, xhandler_put) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_volsw_ext, \
+ .get = xhandler_get, .put = xhandler_put, \
+ .private_value = SOC_SINGLE_VALUE_EXT(xreg, xmask, xinvert) }
+#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_bool_ext, \
+ .get = xhandler_get, .put = xhandler_put, \
+ .private_value = xdata }
+#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_enum_ext, \
+ .get = xhandler_get, .put = xhandler_put, \
+ .private_value = (unsigned long)&xenum }
+
+/*
+ * Digital Audio Interface (DAI) types
+ */
+#define SND_SOC_DAI_AC97 0x1
+#define SND_SOC_DAI_I2S 0x2
+#define SND_SOC_DAI_PCM 0x4
+
+/*
+ * DAI hardware audio formats
+ */
+#define SND_SOC_DAIFMT_I2S (1 << 0) /* I2S mode */
+#define SND_SOC_DAIFMT_RIGHT_J (1 << 1) /* Right justified mode */
+#define SND_SOC_DAIFMT_LEFT_J (1 << 2) /* Left Justified mode */
+#define SND_SOC_DAIFMT_DSP_A (1 << 3) /* L data msb after FRM or LRC */
+#define SND_SOC_DAIFMT_DSP_B (1 << 4) /* L data msb during FRM or LRC */
+#define SND_SOC_DAIFMT_AC97 (1 << 5) /* AC97 */
+
+/*
+ * DAI hardware signal inversions
+ */
+#define SND_SOC_DAIFMT_NB_NF (1 << 8) /* normal bit clock + frame */
+#define SND_SOC_DAIFMT_NB_IF (1 << 9) /* normal bclk + inv frm */
+#define SND_SOC_DAIFMT_IB_NF (1 << 10) /* invert bclk + nor frm */
+#define SND_SOC_DAIFMT_IB_IF (1 << 11) /* invert bclk + frm */
+
+/*
+ * DAI hardware clock masters
+ * This is wrt the codec, the inverse is true for the interface
+ * i.e. if the codec is clk and frm master then the interface is
+ * clk and frame slave.
+ */
+#define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & frm master */
+#define SND_SOC_DAIFMT_CBS_CFM (1 << 13) /* codec clk slave & frm master */
+#define SND_SOC_DAIFMT_CBM_CFS (1 << 14) /* codec clk master & frame slave */
+#define SND_SOC_DAIFMT_CBS_CFS (1 << 15) /* codec clk & frm slave */
+
+#define SND_SOC_DAIFMT_FORMAT_MASK 0x00ff
+#define SND_SOC_DAIFMT_INV_MASK 0x0f00
+#define SND_SOC_DAIFMT_CLOCK_MASK 0xf000
+
+/*
+ * DAI hardware audio direction
+ */
+#define SND_SOC_DAIDIR_PLAYBACK 0x1
+#define SND_SOC_DAIDIR_CAPTURE 0x2
+
+/*
+ * DAI hardware Time Division Multiplexing (TDM) Slots
+ * Left and Right data word positions
+ * This is measured in words (sample size) and not bits.
+ */
+#define SND_SOC_DAITDM_LRDW(l,r) ((l << 8) | r)
+
+/*
+ * DAI hardware clock ratios
+ * bit clock can either be a generated by dividing mclk or
+ * by multiplying sample rate, hence there are 2 definitions below
+ * depending on codec type.
+ */
+/* ratio of sample rate to mclk/sysclk */
+#define SND_SOC_FS_ALL 0xffff /* all mclk supported */
+
+/* bit clock dividers */
+#define SND_SOC_FSBD(x) (1 << (x - 1)) /* ratio mclk:bclk */
+#define SND_SOC_FSBD_REAL(x) (ffs(x))
+#define SND_SOC_FSBD_ALL 0xffff /* all bit clock dividers supported */
+
+/* bit clock ratio to sample rate */
+#define SND_SOC_FSB(x) (1 << ((x - 16) / 16))
+#define SND_SOC_FSB_REAL(x) (((ffs(x) - 1) * 16) + 16)
+/* all bclk ratios supported */
+#define SND_SOC_FSB_ALL SND_SOC_FSBD_ALL
+
+/*
+ * DAI hardware flags
+ */
+/* use bfs mclk divider mode, else sample rate ratio */
+#define SND_SOC_DAI_BFS_DIV 0x1
+
+/*
+ * AC97 codec ID's bitmask
+ */
+#define SND_SOC_DAI_AC97_ID0 (1 << 0)
+#define SND_SOC_DAI_AC97_ID1 (1 << 1)
+#define SND_SOC_DAI_AC97_ID2 (1 << 2)
+#define SND_SOC_DAI_AC97_ID3 (1 << 3)
+
+struct snd_soc_device;
+struct snd_soc_pcm_stream;
+struct snd_soc_ops;
+struct snd_soc_dai_mode;
+struct snd_soc_pcm_runtime;
+struct snd_soc_codec_dai;
+struct snd_soc_cpu_dai;
+struct snd_soc_codec;
+struct snd_soc_machine_config;
+struct soc_enum;
+struct snd_soc_ac97_ops;
+struct snd_soc_clock_info;
+
+typedef int (*hw_write_t)(void *,const char* ,int);
+typedef int (*hw_read_t)(void *,char* ,int);
+
+extern struct snd_ac97_bus_ops soc_ac97_ops;
+
+/* pcm <-> DAI connect */
+void snd_soc_free_pcms(struct snd_soc_device *socdev);
+int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
+int snd_soc_register_card(struct snd_soc_device *socdev);
+
+/* set runtime hw params */
+int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
+ const struct snd_pcm_hardware *hw);
+int snd_soc_get_rate(int rate);
+
+/* codec IO */
+#define snd_soc_read(codec, reg) codec->read(codec, reg)
+#define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
+
+/* codec register bit access */
+int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
+ unsigned short mask, unsigned short value);
+int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
+ unsigned short mask, unsigned short value);
+
+int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
+ struct snd_ac97_bus_ops *ops, int num);
+void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
+
+/*
+ *Controls
+ */
+struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
+ void *data, char *long_name);
+int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_info_bool_ext(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+
+/* SoC PCM stream information */
+struct snd_soc_pcm_stream {
+ char *stream_name;
+ unsigned int rate_min; /* min rate */
+ unsigned int rate_max; /* max rate */
+ unsigned int channels_min; /* min channels */
+ unsigned int channels_max; /* max channels */
+ unsigned int active:1; /* stream is in use */
+};
+
+/* SoC audio ops */
+struct snd_soc_ops {
+ int (*startup)(struct snd_pcm_substream *);
+ void (*shutdown)(struct snd_pcm_substream *);
+ int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
+ int (*hw_free)(struct snd_pcm_substream *);
+ int (*prepare)(struct snd_pcm_substream *);
+ int (*trigger)(struct snd_pcm_substream *, int);
+};
+
+/* SoC DAI hardware mode */
+struct snd_soc_dai_mode {
+ u16 fmt; /* SND_SOC_DAIFMT_* */
+ u16 tdm; /* SND_SOC_HWTDM_* */
+ u64 pcmfmt; /* SNDRV_PCM_FMTBIT_* */
+ u16 pcmrate; /* SND_SOC_HWRATE_* */
+ u16 pcmdir:2; /* SND_SOC_HWDIR_* */
+ u16 flags:8; /* hw flags */
+ u16 fs; /* mclk to rate divider */
+ u32 bfs; /* mclk to bclk dividers */
+ unsigned long priv; /* private mode data */
+};
+
+/* DAI capabilities */
+struct snd_soc_dai_cap {
+ int num_modes; /* number of DAI modes */
+ struct snd_soc_dai_mode *mode; /* array of supported DAI modes */
+};
+
+/* SoC Codec DAI */
+struct snd_soc_codec_dai {
+ char *name;
+ int id;
+
+ /* DAI capabilities */
+ struct snd_soc_pcm_stream playback;
+ struct snd_soc_pcm_stream capture;
+ struct snd_soc_dai_cap caps;
+
+ /* DAI runtime info */
+ struct snd_soc_dai_mode dai_runtime;
+ struct snd_soc_ops ops;
+ unsigned int (*config_sysclk)(struct snd_soc_codec_dai*,
+ struct snd_soc_clock_info *info, unsigned int clk);
+ int (*digital_mute)(struct snd_soc_codec *,
+ struct snd_soc_codec_dai*, int);
+ unsigned int mclk; /* the audio master clock */
+ unsigned int pll_in; /* the PLL input clock */
+ unsigned int pll_out; /* the PLL output clock */
+ unsigned int clk_div; /* internal clock divider << 1 (for fractions) */
+ unsigned int active;
+ unsigned char pop_wait:1;
+
+ /* DAI private data */
+ void *private_data;
+};
+
+/* SoC CPU DAI */
+struct snd_soc_cpu_dai {
+
+ /* DAI description */
+ char *name;
+ unsigned int id;
+ unsigned char type;
+
+ /* DAI callbacks */
+ int (*probe)(struct platform_device *pdev);
+ void (*remove)(struct platform_device *pdev);
+ int (*suspend)(struct platform_device *pdev,
+ struct snd_soc_cpu_dai *cpu_dai);
+ int (*resume)(struct platform_device *pdev,
+ struct snd_soc_cpu_dai *cpu_dai);
+ unsigned int (*config_sysclk)(struct snd_soc_cpu_dai *cpu_dai,
+ struct snd_soc_clock_info *info, unsigned int clk);
+
+ /* DAI capabilities */
+ struct snd_soc_pcm_stream capture;
+ struct snd_soc_pcm_stream playback;
+ struct snd_soc_dai_cap caps;
+
+ /* DAI runtime info */
+ struct snd_soc_dai_mode dai_runtime;
+ struct snd_soc_ops ops;
+ struct snd_pcm_runtime *runtime;
+ unsigned char active:1;
+ unsigned int mclk;
+ void *dma_data;
+
+ /* DAI private data */
+ void *private_data;
+};
+
+/* SoC Audio Codec */
+struct snd_soc_codec {
+ char *name;
+ struct module *owner;
+ struct mutex mutex;
+
+ /* callbacks */
+ int (*dapm_event)(struct snd_soc_codec *codec, int event);
+
+ /* runtime */
+ struct snd_card *card;
+ struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
+ unsigned int active;
+ unsigned int pcm_devs;
+ void *private_data;
+
+ /* codec IO */
+ void *control_data; /* codec control (i2c/3wire) data */
+ unsigned int (*read)(struct snd_soc_codec *, unsigned int);
+ int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
+ hw_write_t hw_write;
+ hw_read_t hw_read;
+ void *reg_cache;
+ short reg_cache_size;
+ short reg_cache_step;
+
+ /* dapm */
+ struct list_head dapm_widgets;
+ struct list_head dapm_paths;
+ unsigned int dapm_state;
+ unsigned int suspend_dapm_state;
+
+ /* codec DAI's */
+ struct snd_soc_codec_dai *dai;
+ unsigned int num_dai;
+};
+
+/* codec device */
+struct snd_soc_codec_device {
+ int (*probe)(struct platform_device *pdev);
+ int (*remove)(struct platform_device *pdev);
+ int (*suspend)(struct platform_device *pdev, pm_message_t state);
+ int (*resume)(struct platform_device *pdev);
+};
+
+/* SoC platform interface */
+struct snd_soc_platform {
+ char *name;
+
+ int (*probe)(struct platform_device *pdev);
+ int (*remove)(struct platform_device *pdev);
+ int (*suspend)(struct platform_device *pdev,
+ struct snd_soc_cpu_dai *cpu_dai);
+ int (*resume)(struct platform_device *pdev,
+ struct snd_soc_cpu_dai *cpu_dai);
+
+ /* pcm creation and destruction */
+ int (*pcm_new)(struct snd_card *, struct snd_soc_codec_dai *,
+ struct snd_pcm *);
+ void (*pcm_free)(struct snd_pcm *);
+
+ /* platform stream ops */
+ struct snd_pcm_ops *pcm_ops;
+};
+
+/* SoC machine DAI configuration, glues a codec and cpu DAI together */
+struct snd_soc_dai_link {
+ char *name; /* Codec name */
+ char *stream_name; /* Stream name */
+
+ /* DAI */
+ struct snd_soc_codec_dai *codec_dai;
+ struct snd_soc_cpu_dai *cpu_dai;
+ u32 flags; /* DAI config preference flags */
+
+ /* codec/machine specific init - e.g. add machine controls */
+ int (*init)(struct snd_soc_codec *codec);
+
+ /* audio sysclock configuration */
+ unsigned int (*config_sysclk)(struct snd_soc_pcm_runtime *rtd,
+ struct snd_soc_clock_info *info);
+};
+
+/* SoC machine */
+struct snd_soc_machine {
+ char *name;
+
+ int (*probe)(struct platform_device *pdev);
+ int (*remove)(struct platform_device *pdev);
+
+ /* the pre and post PM functions are used to do any PM work before and
+ * after the codec and DAI's do any PM work. */
+ int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
+ int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
+ int (*resume_pre)(struct platform_device *pdev);
+ int (*resume_post)(struct platform_device *pdev);
+
+ /* machine stream operations */
+ struct snd_soc_ops *ops;
+
+ /* CPU <--> Codec DAI links */
+ struct snd_soc_dai_link *dai_link;
+ int num_links;
+};
+
+/* SoC Device - the audio subsystem */
+struct snd_soc_device {
+ struct device *dev;
+ struct snd_soc_machine *machine;
+ struct snd_soc_platform *platform;
+ struct snd_soc_codec *codec;
+ struct snd_soc_codec_device *codec_dev;
+ void *codec_data;
+};
+
+/* runtime channel data */
+struct snd_soc_pcm_runtime {
+ struct snd_soc_codec_dai *codec_dai;
+ struct snd_soc_cpu_dai *cpu_dai;
+ struct snd_soc_device *socdev;
+};
+
+/* enumerated kcontrol */
+struct soc_enum {
+ unsigned short reg;
+ unsigned short reg2;
+ unsigned char shift_l;
+ unsigned char shift_r;
+ unsigned int mask;
+ const char **texts;
+ void *dapm;
+};
+
+/* clocking configuration data */
+struct snd_soc_clock_info {
+ unsigned int rate;
+ unsigned int fs;
+ unsigned int bclk_master;
+};
+
+#endif