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linux/include/sound/ac97_codec.h
Takashi Iwai 19260818a9 ALSA: ac97: Treat snd_ac97_bus_ops as const 
This is a preliminary patch to allow const for snd_ac97_bus_ops
definitions in each driver's code.  The ops reference is read-only,
hence it can be declared as const for further optimization.

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-23-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03 09:24:08 +01:00

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/* SPDX-License-Identifier: GPL-2.0+
*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Universal interface for Audio Codec '97
*
* For more details look to AC '97 component specification revision 2.1
* by Intel Corporation (http://developer.intel.com).
*/
#ifndef __SOUND_AC97_CODEC_H
#define __SOUND_AC97_CODEC_H
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/workqueue.h>
#include <sound/ac97/regs.h>
#include <sound/pcm.h>
#include <sound/control.h>
#include <sound/info.h>
/* maximum number of devices on the AC97 bus */
#define AC97_BUS_MAX_DEVICES 4
/* specific - SigmaTel */
#define AC97_SIGMATEL_OUTSEL 0x64 /* Output Select, STAC9758 */
#define AC97_SIGMATEL_INSEL 0x66 /* Input Select, STAC9758 */
#define AC97_SIGMATEL_IOMISC 0x68 /* STAC9758 */
#define AC97_SIGMATEL_ANALOG 0x6c /* Analog Special */
#define AC97_SIGMATEL_DAC2INVERT 0x6e
#define AC97_SIGMATEL_BIAS1 0x70
#define AC97_SIGMATEL_BIAS2 0x72
#define AC97_SIGMATEL_VARIOUS 0x72 /* STAC9758 */
#define AC97_SIGMATEL_MULTICHN 0x74 /* Multi-Channel programming */
#define AC97_SIGMATEL_CIC1 0x76
#define AC97_SIGMATEL_CIC2 0x78
/* specific - Analog Devices */
#define AC97_AD_TEST 0x5a /* test register */
#define AC97_AD_TEST2 0x5c /* undocumented test register 2 */
#define AC97_AD_HPFD_SHIFT 12 /* High Pass Filter Disable */
#define AC97_AD_CODEC_CFG 0x70 /* codec configuration */
#define AC97_AD_JACK_SPDIF 0x72 /* Jack Sense & S/PDIF */
#define AC97_AD_SERIAL_CFG 0x74 /* Serial Configuration */
#define AC97_AD_MISC 0x76 /* Misc Control Bits */
#define AC97_AD_VREFD_SHIFT 2 /* V_REFOUT Disable (AD1888) */
/* specific - Cirrus Logic */
#define AC97_CSR_ACMODE 0x5e /* AC Mode Register */
#define AC97_CSR_MISC_CRYSTAL 0x60 /* Misc Crystal Control */
#define AC97_CSR_SPDIF 0x68 /* S/PDIF Register */
#define AC97_CSR_SERIAL 0x6a /* Serial Port Control */
#define AC97_CSR_SPECF_ADDR 0x6c /* Special Feature Address */
#define AC97_CSR_SPECF_DATA 0x6e /* Special Feature Data */
#define AC97_CSR_BDI_STATUS 0x7a /* BDI Status */
/* specific - Conexant */
#define AC97_CXR_AUDIO_MISC 0x5c
#define AC97_CXR_SPDIFEN (1<<3)
#define AC97_CXR_COPYRGT (1<<2)
#define AC97_CXR_SPDIF_MASK (3<<0)
#define AC97_CXR_SPDIF_PCM 0x0
#define AC97_CXR_SPDIF_AC3 0x2
/* specific - ALC */
#define AC97_ALC650_SPDIF_INPUT_STATUS1 0x60
/* S/PDIF input status 1 bit defines */
#define AC97_ALC650_PRO 0x0001 /* Professional status */
#define AC97_ALC650_NAUDIO 0x0002 /* Non audio stream */
#define AC97_ALC650_COPY 0x0004 /* Copyright status */
#define AC97_ALC650_PRE 0x0038 /* Preemphasis status */
#define AC97_ALC650_PRE_SHIFT 3
#define AC97_ALC650_MODE 0x00C0 /* Preemphasis status */
#define AC97_ALC650_MODE_SHIFT 6
#define AC97_ALC650_CC_MASK 0x7f00 /* Category Code mask */
#define AC97_ALC650_CC_SHIFT 8
#define AC97_ALC650_L 0x8000 /* Generation Level status */
#define AC97_ALC650_SPDIF_INPUT_STATUS2 0x62
/* S/PDIF input status 2 bit defines */
#define AC97_ALC650_SOUCE_MASK 0x000f /* Source number */
#define AC97_ALC650_CHANNEL_MASK 0x00f0 /* Channel number */
#define AC97_ALC650_CHANNEL_SHIFT 4
#define AC97_ALC650_SPSR_MASK 0x0f00 /* S/PDIF Sample Rate bits */
#define AC97_ALC650_SPSR_SHIFT 8
#define AC97_ALC650_SPSR_44K 0x0000 /* Use 44.1kHz Sample rate */
#define AC97_ALC650_SPSR_48K 0x0200 /* Use 48kHz Sample rate */
#define AC97_ALC650_SPSR_32K 0x0300 /* Use 32kHz Sample rate */
#define AC97_ALC650_CLOCK_ACCURACY 0x3000 /* Clock accuracy */
#define AC97_ALC650_CLOCK_SHIFT 12
#define AC97_ALC650_CLOCK_LOCK 0x4000 /* Clock locked status */
#define AC97_ALC650_V 0x8000 /* Validity status */
#define AC97_ALC650_SURR_DAC_VOL 0x64
#define AC97_ALC650_LFE_DAC_VOL 0x66
#define AC97_ALC650_UNKNOWN1 0x68
#define AC97_ALC650_MULTICH 0x6a
#define AC97_ALC650_UNKNOWN2 0x6c
#define AC97_ALC650_REVISION 0x6e
#define AC97_ALC650_UNKNOWN3 0x70
#define AC97_ALC650_UNKNOWN4 0x72
#define AC97_ALC650_MISC 0x74
#define AC97_ALC650_GPIO_SETUP 0x76
#define AC97_ALC650_GPIO_STATUS 0x78
#define AC97_ALC650_CLOCK 0x7a
/* specific - Yamaha YMF7x3 */
#define AC97_YMF7X3_DIT_CTRL 0x66 /* DIT Control (YMF743) / 2 (YMF753) */
#define AC97_YMF7X3_3D_MODE_SEL 0x68 /* 3D Mode Select */
/* specific - C-Media */
#define AC97_CM9738_VENDOR_CTRL 0x5a
#define AC97_CM9739_MULTI_CHAN 0x64
#define AC97_CM9739_SPDIF_IN_STATUS 0x68 /* 32bit */
#define AC97_CM9739_SPDIF_CTRL 0x6c
/* specific - wolfson */
#define AC97_WM97XX_FMIXER_VOL 0x72
#define AC97_WM9704_RMIXER_VOL 0x74
#define AC97_WM9704_TEST 0x5a
#define AC97_WM9704_RPCM_VOL 0x70
#define AC97_WM9711_OUT3VOL 0x16
/* ac97->scaps */
#define AC97_SCAP_AUDIO (1<<0) /* audio codec 97 */
#define AC97_SCAP_MODEM (1<<1) /* modem codec 97 */
#define AC97_SCAP_SURROUND_DAC (1<<2) /* surround L&R DACs are present */
#define AC97_SCAP_CENTER_LFE_DAC (1<<3) /* center and LFE DACs are present */
#define AC97_SCAP_SKIP_AUDIO (1<<4) /* skip audio part of codec */
#define AC97_SCAP_SKIP_MODEM (1<<5) /* skip modem part of codec */
#define AC97_SCAP_INDEP_SDIN (1<<6) /* independent SDIN */
#define AC97_SCAP_INV_EAPD (1<<7) /* inverted EAPD */
#define AC97_SCAP_DETECT_BY_VENDOR (1<<8) /* use vendor registers for read tests */
#define AC97_SCAP_NO_SPDIF (1<<9) /* don't build SPDIF controls */
#define AC97_SCAP_EAPD_LED (1<<10) /* EAPD as mute LED */
#define AC97_SCAP_POWER_SAVE (1<<11) /* capable for aggressive power-saving */
/* ac97->flags */
#define AC97_HAS_PC_BEEP (1<<0) /* force PC Speaker usage */
#define AC97_AD_MULTI (1<<1) /* Analog Devices - multi codecs */
#define AC97_CS_SPDIF (1<<2) /* Cirrus Logic uses funky SPDIF */
#define AC97_CX_SPDIF (1<<3) /* Conexant's spdif interface */
#define AC97_STEREO_MUTES (1<<4) /* has stereo mute bits */
#define AC97_DOUBLE_RATE (1<<5) /* supports double rate playback */
#define AC97_HAS_NO_MASTER_VOL (1<<6) /* no Master volume */
#define AC97_HAS_NO_PCM_VOL (1<<7) /* no PCM volume */
#define AC97_DEFAULT_POWER_OFF (1<<8) /* no RESET write */
#define AC97_MODEM_PATCH (1<<9) /* modem patch */
#define AC97_HAS_NO_REC_GAIN (1<<10) /* no Record gain */
#define AC97_HAS_NO_PHONE (1<<11) /* no PHONE volume */
#define AC97_HAS_NO_PC_BEEP (1<<12) /* no PC Beep volume */
#define AC97_HAS_NO_VIDEO (1<<13) /* no Video volume */
#define AC97_HAS_NO_CD (1<<14) /* no CD volume */
#define AC97_HAS_NO_MIC (1<<15) /* no MIC volume */
#define AC97_HAS_NO_TONE (1<<16) /* no Tone volume */
#define AC97_HAS_NO_STD_PCM (1<<17) /* no standard AC97 PCM volume and mute */
#define AC97_HAS_NO_AUX (1<<18) /* no standard AC97 AUX volume and mute */
#define AC97_HAS_8CH (1<<19) /* supports 8-channel output */
/* rates indexes */
#define AC97_RATES_FRONT_DAC 0
#define AC97_RATES_SURR_DAC 1
#define AC97_RATES_LFE_DAC 2
#define AC97_RATES_ADC 3
#define AC97_RATES_MIC_ADC 4
#define AC97_RATES_SPDIF 5
#define AC97_NUM_GPIOS 16
/*
*
*/
struct snd_ac97;
struct snd_ac97_gpio_priv;
struct snd_pcm_chmap;
struct snd_ac97_build_ops {
int (*build_3d) (struct snd_ac97 *ac97);
int (*build_specific) (struct snd_ac97 *ac97);
int (*build_spdif) (struct snd_ac97 *ac97);
int (*build_post_spdif) (struct snd_ac97 *ac97);
#ifdef CONFIG_PM
void (*suspend) (struct snd_ac97 *ac97);
void (*resume) (struct snd_ac97 *ac97);
#endif
void (*update_jacks) (struct snd_ac97 *ac97); /* for jack-sharing */
};
struct snd_ac97_bus_ops {
void (*reset) (struct snd_ac97 *ac97);
void (*warm_reset)(struct snd_ac97 *ac97);
void (*write) (struct snd_ac97 *ac97, unsigned short reg, unsigned short val);
unsigned short (*read) (struct snd_ac97 *ac97, unsigned short reg);
void (*wait) (struct snd_ac97 *ac97);
void (*init) (struct snd_ac97 *ac97);
};
struct snd_ac97_bus {
/* -- lowlevel (hardware) driver specific -- */
const struct snd_ac97_bus_ops *ops;
void *private_data;
void (*private_free) (struct snd_ac97_bus *bus);
/* --- */
struct snd_card *card;
unsigned short num; /* bus number */
unsigned short no_vra: 1, /* bridge doesn't support VRA */
dra: 1, /* bridge supports double rate */
isdin: 1;/* independent SDIN */
unsigned int clock; /* AC'97 base clock (usually 48000Hz) */
spinlock_t bus_lock; /* used mainly for slot allocation */
unsigned short used_slots[2][4]; /* actually used PCM slots */
unsigned short pcms_count; /* count of PCMs */
struct ac97_pcm *pcms;
struct snd_ac97 *codec[4];
struct snd_info_entry *proc;
};
/* static resolution table */
struct snd_ac97_res_table {
unsigned short reg; /* register */
unsigned short bits; /* resolution bitmask */
};
struct snd_ac97_template {
void *private_data;
void (*private_free) (struct snd_ac97 *ac97);
struct pci_dev *pci; /* assigned PCI device - used for quirks */
unsigned short num; /* number of codec: 0 = primary, 1 = secondary */
unsigned short addr; /* physical address of codec [0-3] */
unsigned int scaps; /* driver capabilities */
const struct snd_ac97_res_table *res_table; /* static resolution */
};
struct snd_ac97 {
/* -- lowlevel (hardware) driver specific -- */
const struct snd_ac97_build_ops *build_ops;
void *private_data;
void (*private_free) (struct snd_ac97 *ac97);
/* --- */
struct snd_ac97_bus *bus;
struct pci_dev *pci; /* assigned PCI device - used for quirks */
struct snd_info_entry *proc;
struct snd_info_entry *proc_regs;
unsigned short subsystem_vendor;
unsigned short subsystem_device;
struct mutex reg_mutex;
struct mutex page_mutex; /* mutex for AD18xx multi-codecs and paging (2.3) */
unsigned short num; /* number of codec: 0 = primary, 1 = secondary */
unsigned short addr; /* physical address of codec [0-3] */
unsigned int id; /* identification of codec */
unsigned short caps; /* capabilities (register 0) */
unsigned short ext_id; /* extended feature identification (register 28) */
unsigned short ext_mid; /* extended modem ID (register 3C) */
const struct snd_ac97_res_table *res_table; /* static resolution */
unsigned int scaps; /* driver capabilities */
unsigned int flags; /* specific code */
unsigned int rates[6]; /* see AC97_RATES_* defines */
unsigned int spdif_status;
unsigned short regs[0x80]; /* register cache */
DECLARE_BITMAP(reg_accessed, 0x80); /* bit flags */
union { /* vendor specific code */
struct {
unsigned short unchained[3]; // 0 = C34, 1 = C79, 2 = C69
unsigned short chained[3]; // 0 = C34, 1 = C79, 2 = C69
unsigned short id[3]; // codec IDs (lower 16-bit word)
unsigned short pcmreg[3]; // PCM registers
unsigned short codec_cfg[3]; // CODEC_CFG bits
unsigned char swap_mic_linein; // AD1986/AD1986A only
unsigned char lo_as_master; /* LO as master */
} ad18xx;
unsigned int dev_flags; /* device specific */
} spec;
/* jack-sharing info */
unsigned char indep_surround;
unsigned char channel_mode;
#ifdef CONFIG_SND_AC97_POWER_SAVE
unsigned int power_up; /* power states */
struct delayed_work power_work;
#endif
struct device dev;
struct snd_ac97_gpio_priv *gpio_priv;
struct snd_pcm_chmap *chmaps[2]; /* channel-maps (optional) */
};
#define to_ac97_t(d) container_of(d, struct snd_ac97, dev)
/* conditions */
static inline int ac97_is_audio(struct snd_ac97 * ac97)
{
return (ac97->scaps & AC97_SCAP_AUDIO);
}
static inline int ac97_is_modem(struct snd_ac97 * ac97)
{
return (ac97->scaps & AC97_SCAP_MODEM);
}
static inline int ac97_is_rev22(struct snd_ac97 * ac97)
{
return (ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_22;
}
static inline int ac97_can_amap(struct snd_ac97 * ac97)
{
return (ac97->ext_id & AC97_EI_AMAP) != 0;
}
static inline int ac97_can_spdif(struct snd_ac97 * ac97)
{
return (ac97->ext_id & AC97_EI_SPDIF) != 0;
}
/* functions */
/* create new AC97 bus */
int snd_ac97_bus(struct snd_card *card, int num,
const struct snd_ac97_bus_ops *ops,
void *private_data, struct snd_ac97_bus **rbus);
/* create mixer controls */
int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
struct snd_ac97 **rac97);
const char *snd_ac97_get_short_name(struct snd_ac97 *ac97);
void snd_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);
unsigned short snd_ac97_read(struct snd_ac97 *ac97, unsigned short reg);
void snd_ac97_write_cache(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);
int snd_ac97_update(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);
int snd_ac97_update_bits(struct snd_ac97 *ac97, unsigned short reg, unsigned short mask, unsigned short value);
#ifdef CONFIG_SND_AC97_POWER_SAVE
int snd_ac97_update_power(struct snd_ac97 *ac97, int reg, int powerup);
#else
static inline int snd_ac97_update_power(struct snd_ac97 *ac97, int reg,
int powerup)
{
return 0;
}
#endif
#ifdef CONFIG_PM
void snd_ac97_suspend(struct snd_ac97 *ac97);
void snd_ac97_resume(struct snd_ac97 *ac97);
#endif
int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
unsigned int id_mask);
/* quirk types */
enum {
AC97_TUNE_DEFAULT = -1, /* use default from quirk list (not valid in list) */
AC97_TUNE_NONE = 0, /* nothing extra to do */
AC97_TUNE_HP_ONLY, /* headphone (true line-out) control as master only */
AC97_TUNE_SWAP_HP, /* swap headphone and master controls */
AC97_TUNE_SWAP_SURROUND, /* swap master and surround controls */
AC97_TUNE_AD_SHARING, /* for AD1985, turn on OMS bit and use headphone */
AC97_TUNE_ALC_JACK, /* for Realtek, enable JACK detection */
AC97_TUNE_INV_EAPD, /* inverted EAPD implementation */
AC97_TUNE_MUTE_LED, /* EAPD bit works as mute LED */
AC97_TUNE_HP_MUTE_LED, /* EAPD bit works as mute LED, use headphone control as master */
};
struct ac97_quirk {
unsigned short subvendor; /* PCI subsystem vendor id */
unsigned short subdevice; /* PCI subsystem device id */
unsigned short mask; /* device id bit mask, 0 = accept all */
unsigned int codec_id; /* codec id (if any), 0 = accept all */
const char *name; /* name shown as info */
int type; /* quirk type above */
};
int snd_ac97_tune_hardware(struct snd_ac97 *ac97,
const struct ac97_quirk *quirk,
const char *override);
int snd_ac97_set_rate(struct snd_ac97 *ac97, int reg, unsigned int rate);
/*
* PCM allocation
*/
enum ac97_pcm_cfg {
AC97_PCM_CFG_FRONT = 2,
AC97_PCM_CFG_REAR = 10, /* alias surround */
AC97_PCM_CFG_LFE = 11, /* center + lfe */
AC97_PCM_CFG_40 = 4, /* front + rear */
AC97_PCM_CFG_51 = 6, /* front + rear + center/lfe */
AC97_PCM_CFG_SPDIF = 20
};
struct ac97_pcm {
struct snd_ac97_bus *bus;
unsigned int stream: 1, /* stream type: 1 = capture */
exclusive: 1, /* exclusive mode, don't override with other pcms */
copy_flag: 1, /* lowlevel driver must fill all entries */
spdif: 1; /* spdif pcm */
unsigned short aslots; /* active slots */
unsigned short cur_dbl; /* current double-rate state */
unsigned int rates; /* available rates */
struct {
unsigned short slots; /* driver input: requested AC97 slot numbers */
unsigned short rslots[4]; /* allocated slots per codecs */
unsigned char rate_table[4];
struct snd_ac97 *codec[4]; /* allocated codecs */
} r[2]; /* 0 = standard rates, 1 = double rates */
unsigned long private_value; /* used by the hardware driver */
};
int snd_ac97_pcm_assign(struct snd_ac97_bus *ac97,
unsigned short pcms_count,
const struct ac97_pcm *pcms);
int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
enum ac97_pcm_cfg cfg, unsigned short slots);
int snd_ac97_pcm_close(struct ac97_pcm *pcm);
int snd_ac97_pcm_double_rate_rules(struct snd_pcm_runtime *runtime);
/* ad hoc AC97 device driver access */
extern struct bus_type ac97_bus_type;
/* AC97 platform_data adding function */
static inline void snd_ac97_dev_add_pdata(struct snd_ac97 *ac97, void *data)
{
ac97->dev.platform_data = data;
}
#endif /* __SOUND_AC97_CODEC_H */
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