#include <sound/pcm.h>
#include <sound/hwdep.h>
+#if defined(CONFIG_PM) || defined(CONFIG_SND_HDA_POWER_SAVE)
+#define SND_HDA_NEEDS_RESUME /* resume control code is required */
+#endif
+
/*
* nodes
*/
#define AC_VERB_GET_PIN_SENSE 0x0f09
#define AC_VERB_GET_BEEP_CONTROL 0x0f0a
#define AC_VERB_GET_EAPD_BTLENABLE 0x0f0c
-#define AC_VERB_GET_DIGI_CONVERT 0x0f0d
+#define AC_VERB_GET_DIGI_CONVERT_1 0x0f0d
+#define AC_VERB_GET_DIGI_CONVERT_2 0x0f0e /* unused */
#define AC_VERB_GET_VOLUME_KNOB_CONTROL 0x0f0f
/* f10-f1a: GPIO */
#define AC_VERB_GET_GPIO_DATA 0x0f15
#define AC_VERB_GET_GPIO_MASK 0x0f16
#define AC_VERB_GET_GPIO_DIRECTION 0x0f17
+#define AC_VERB_GET_GPIO_WAKE_MASK 0x0f18
+#define AC_VERB_GET_GPIO_UNSOLICITED_RSP_MASK 0x0f19
+#define AC_VERB_GET_GPIO_STICKY_MASK 0x0f1a
#define AC_VERB_GET_CONFIG_DEFAULT 0x0f1c
/* f20: AFG/MFG */
#define AC_VERB_GET_SUBSYSTEM_ID 0x0f20
+#define AC_VERB_GET_CVT_CHAN_COUNT 0x0f2d
+#define AC_VERB_GET_HDMI_DIP_SIZE 0x0f2e
+#define AC_VERB_GET_HDMI_ELDD 0x0f2f
+#define AC_VERB_GET_HDMI_DIP_INDEX 0x0f30
+#define AC_VERB_GET_HDMI_DIP_DATA 0x0f31
+#define AC_VERB_GET_HDMI_DIP_XMIT 0x0f32
+#define AC_VERB_GET_HDMI_CP_CTRL 0x0f33
+#define AC_VERB_GET_HDMI_CHAN_SLOT 0x0f34
/*
* SET verbs
#define AC_VERB_SET_GPIO_DATA 0x715
#define AC_VERB_SET_GPIO_MASK 0x716
#define AC_VERB_SET_GPIO_DIRECTION 0x717
+#define AC_VERB_SET_GPIO_WAKE_MASK 0x718
+#define AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK 0x719
+#define AC_VERB_SET_GPIO_STICKY_MASK 0x71a
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_0 0x71c
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_1 0x71d
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_2 0x71e
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_3 0x71f
+#define AC_VERB_SET_EAPD 0x788
#define AC_VERB_SET_CODEC_RESET 0x7ff
+#define AC_VERB_SET_CVT_CHAN_COUNT 0x72d
+#define AC_VERB_SET_HDMI_DIP_INDEX 0x730
+#define AC_VERB_SET_HDMI_DIP_DATA 0x731
+#define AC_VERB_SET_HDMI_DIP_XMIT 0x732
+#define AC_VERB_SET_HDMI_CP_CTRL 0x733
+#define AC_VERB_SET_HDMI_CHAN_SLOT 0x734
/*
* Parameter IDs
#define AC_PAR_PROC_CAP 0x10
#define AC_PAR_GPIO_CAP 0x11
#define AC_PAR_AMP_OUT_CAP 0x12
+#define AC_PAR_VOL_KNB_CAP 0x13
+#define AC_PAR_HDMI_LPCM_CAP 0x20
/*
* AC_VERB_PARAMETERS results (32bit)
#define AC_WCAP_DIGITAL (1<<9) /* digital I/O */
#define AC_WCAP_POWER (1<<10) /* power control */
#define AC_WCAP_LR_SWAP (1<<11) /* L/R swap */
+#define AC_WCAP_CP_CAPS (1<<12) /* content protection */
+#define AC_WCAP_CHAN_CNT_EXT (7<<13) /* channel count ext */
#define AC_WCAP_DELAY (0xf<<16)
#define AC_WCAP_DELAY_SHIFT 16
#define AC_WCAP_TYPE (0xf<<20)
#define AC_SUPFMT_FLOAT32 (1<<1)
#define AC_SUPFMT_AC3 (1<<2)
+/* GP I/O count */
+#define AC_GPIO_IO_COUNT (0xff<<0)
+#define AC_GPIO_O_COUNT (0xff<<8)
+#define AC_GPIO_O_COUNT_SHIFT 8
+#define AC_GPIO_I_COUNT (0xff<<16)
+#define AC_GPIO_I_COUNT_SHIFT 16
+#define AC_GPIO_UNSOLICITED (1<<30)
+#define AC_GPIO_WAKE (1<<31)
+
+/* Converter stream, channel */
+#define AC_CONV_CHANNEL (0xf<<0)
+#define AC_CONV_STREAM (0xf<<4)
+#define AC_CONV_STREAM_SHIFT 4
+
+/* Input converter SDI select */
+#define AC_SDI_SELECT (0xf<<0)
+
+/* Unsolicited response control */
+#define AC_UNSOL_TAG (0x3f<<0)
+#define AC_UNSOL_ENABLED (1<<7)
+#define AC_USRSP_EN AC_UNSOL_ENABLED
+
+/* Unsolicited responses */
+#define AC_UNSOL_RES_TAG (0x3f<<26)
+#define AC_UNSOL_RES_TAG_SHIFT 26
+#define AC_UNSOL_RES_SUBTAG (0x1f<<21)
+#define AC_UNSOL_RES_SUBTAG_SHIFT 21
+#define AC_UNSOL_RES_ELDV (1<<1) /* ELD Data valid (for HDMI) */
+#define AC_UNSOL_RES_PD (1<<0) /* pinsense detect */
+#define AC_UNSOL_RES_CP_STATE (1<<1) /* content protection */
+#define AC_UNSOL_RES_CP_READY (1<<0) /* content protection */
+
/* Pin widget capabilies */
#define AC_PINCAP_IMP_SENSE (1<<0) /* impedance sense capable */
#define AC_PINCAP_TRIG_REQ (1<<1) /* trigger required */
#define AC_PINCAP_OUT (1<<4) /* output capable */
#define AC_PINCAP_IN (1<<5) /* input capable */
#define AC_PINCAP_BALANCE (1<<6) /* balanced I/O capable */
+/* Note: This LR_SWAP pincap is defined in the Realtek ALC883 specification,
+ * but is marked reserved in the Intel HDA specification.
+ */
+#define AC_PINCAP_LR_SWAP (1<<7) /* L/R swap */
+/* Note: The same bit as LR_SWAP is newly defined as HDMI capability
+ * in HD-audio specification
+ */
+#define AC_PINCAP_HDMI (1<<7) /* HDMI pin */
#define AC_PINCAP_VREF (0x37<<8)
#define AC_PINCAP_VREF_SHIFT 8
#define AC_PINCAP_EAPD (1<<16) /* EAPD capable */
#define AC_PWRST_D3SUP (1<<3)
/* Power state values */
+#define AC_PWRST_SETTING (0xf<<0)
+#define AC_PWRST_ACTUAL (0xf<<4)
+#define AC_PWRST_ACTUAL_SHIFT 4
#define AC_PWRST_D0 0x00
#define AC_PWRST_D1 0x01
#define AC_PWRST_D2 0x02
/* Processing capabilies */
#define AC_PCAP_BENIGN (1<<0)
#define AC_PCAP_NUM_COEF (0xff<<8)
+#define AC_PCAP_NUM_COEF_SHIFT 8
/* Volume knobs capabilities */
#define AC_KNBCAP_NUM_STEPS (0x7f<<0)
-#define AC_KNBCAP_DELTA (1<<8)
+#define AC_KNBCAP_DELTA (1<<7)
+
+/* HDMI LPCM capabilities */
+#define AC_LPCMCAP_48K_CP_CHNS (0x0f<<0) /* max channels w/ CP-on */
+#define AC_LPCMCAP_48K_NO_CHNS (0x0f<<4) /* max channels w/o CP-on */
+#define AC_LPCMCAP_48K_20BIT (1<<8) /* 20b bitrate supported */
+#define AC_LPCMCAP_48K_24BIT (1<<9) /* 24b bitrate supported */
+#define AC_LPCMCAP_96K_CP_CHNS (0x0f<<10) /* max channels w/ CP-on */
+#define AC_LPCMCAP_96K_NO_CHNS (0x0f<<14) /* max channels w/o CP-on */
+#define AC_LPCMCAP_96K_20BIT (1<<18) /* 20b bitrate supported */
+#define AC_LPCMCAP_96K_24BIT (1<<19) /* 24b bitrate supported */
+#define AC_LPCMCAP_192K_CP_CHNS (0x0f<<20) /* max channels w/ CP-on */
+#define AC_LPCMCAP_192K_NO_CHNS (0x0f<<24) /* max channels w/o CP-on */
+#define AC_LPCMCAP_192K_20BIT (1<<28) /* 20b bitrate supported */
+#define AC_LPCMCAP_192K_24BIT (1<<29) /* 24b bitrate supported */
+#define AC_LPCMCAP_44K (1<<30) /* 44.1kHz support */
+#define AC_LPCMCAP_44K_MS (1<<31) /* 44.1kHz-multiplies support */
/*
* Control Parameters
#define AC_DIG1_PROFESSIONAL (1<<6)
#define AC_DIG1_LEVEL (1<<7)
+/* DIGITAL2 bits */
+#define AC_DIG2_CC (0x7f<<0)
+
/* Pin widget control - 8bit */
#define AC_PINCTL_VREFEN (0x7<<0)
#define AC_PINCTL_VREF_HIZ 0 /* Hi-Z */
#define AC_PINCTL_OUT_EN (1<<6)
#define AC_PINCTL_HP_EN (1<<7)
-/* Unsolicited response - 8bit */
-#define AC_USRSP_EN (1<<7)
+/* Pin sense - 32bit */
+#define AC_PINSENSE_IMPEDANCE_MASK (0x7fffffff)
+#define AC_PINSENSE_PRESENCE (1<<31)
+#define AC_PINSENSE_ELDV (1<<30) /* ELD valid (HDMI) */
+
+/* EAPD/BTL enable - 32bit */
+#define AC_EAPDBTL_BALANCED (1<<0)
+#define AC_EAPDBTL_EAPD (1<<1)
+#define AC_EAPDBTL_LR_SWAP (1<<2)
+
+/* HDMI ELD data */
+#define AC_ELDD_ELD_VALID (1<<31)
+#define AC_ELDD_ELD_DATA 0xff
+
+/* HDMI DIP size */
+#define AC_DIPSIZE_ELD_BUF (1<<3) /* ELD buf size of packet size */
+#define AC_DIPSIZE_PACK_IDX (0x07<<0) /* packet index */
+
+/* HDMI DIP index */
+#define AC_DIPIDX_PACK_IDX (0x07<<5) /* packet idnex */
+#define AC_DIPIDX_BYTE_IDX (0x1f<<0) /* byte index */
+
+/* HDMI DIP xmit (transmit) control */
+#define AC_DIPXMIT_MASK (0x3<<6)
+#define AC_DIPXMIT_DISABLE (0x0<<6) /* disable xmit */
+#define AC_DIPXMIT_ONCE (0x2<<6) /* xmit once then disable */
+#define AC_DIPXMIT_BEST (0x3<<6) /* best effort */
+
+/* HDMI content protection (CP) control */
+#define AC_CPCTRL_CES (1<<9) /* current encryption state */
+#define AC_CPCTRL_READY (1<<8) /* ready bit */
+#define AC_CPCTRL_SUBTAG (0x1f<<3) /* subtag for unsol-resp */
+#define AC_CPCTRL_STATE (3<<0) /* current CP request state */
+
+/* Converter channel <-> HDMI slot mapping */
+#define AC_CVTMAP_HDMI_SLOT (0xf<<0) /* HDMI slot number */
+#define AC_CVTMAP_CHAN (0xf<<4) /* converter channel number */
/* configuration default - 32bit */
#define AC_DEFCFG_SEQUENCE (0xf<<0)
#define AC_DEFCFG_ASSOC_SHIFT 4
#define AC_DEFCFG_MISC (0xf<<8)
#define AC_DEFCFG_MISC_SHIFT 8
+#define AC_DEFCFG_MISC_NO_PRESENCE (1<<0)
#define AC_DEFCFG_COLOR (0xf<<12)
#define AC_DEFCFG_COLOR_SHIFT 12
#define AC_DEFCFG_CONN_TYPE (0xf<<16)
#define HDA_MAX_CODEC_ADDRESS 0x0f
/*
+ * generic arrays
+ */
+struct snd_array {
+ unsigned int used;
+ unsigned int alloced;
+ unsigned int elem_size;
+ unsigned int alloc_align;
+ void *list;
+};
+
+void *snd_array_new(struct snd_array *array);
+void snd_array_free(struct snd_array *array);
+static inline void snd_array_init(struct snd_array *array, unsigned int size,
+ unsigned int align)
+{
+ array->elem_size = size;
+ array->alloc_align = align;
+}
+
+static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
+{
+ return array->list + idx * array->elem_size;
+}
+
+static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
+{
+ return (unsigned long)(ptr - array->list) / array->elem_size;
+}
+
+/*
* Structures
*/
struct hda_bus;
+struct hda_beep;
struct hda_codec;
struct hda_pcm;
struct hda_pcm_stream;
/* bus operators */
struct hda_bus_ops {
/* send a single command */
- int (*command)(struct hda_codec *codec, hda_nid_t nid, int direct,
- unsigned int verb, unsigned int parm);
+ int (*command)(struct hda_bus *bus, unsigned int cmd);
/* get a response from the last command */
- unsigned int (*get_response)(struct hda_codec *codec);
+ unsigned int (*get_response)(struct hda_bus *bus);
/* free the private data */
void (*private_free)(struct hda_bus *);
+ /* attach a PCM stream */
+ int (*attach_pcm)(struct hda_bus *bus, struct hda_codec *codec,
+ struct hda_pcm *pcm);
+ /* reset bus for retry verb */
+ void (*bus_reset)(struct hda_bus *bus);
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ /* notify power-up/down from codec to controller */
+ void (*pm_notify)(struct hda_bus *bus);
+#endif
};
/* template to pass to the bus constructor */
void *private_data;
struct pci_dev *pci;
const char *modelname;
+ int *power_save;
struct hda_bus_ops ops;
};
void *private_data;
struct pci_dev *pci;
const char *modelname;
+ int *power_save;
struct hda_bus_ops ops;
/* codec linked list */
/* unsolicited event queue */
struct hda_bus_unsolicited *unsol;
-
- struct snd_info_entry *proc;
+ char workq_name[16];
+ struct workqueue_struct *workq; /* common workqueue for codecs */
+
+ /* assigned PCMs */
+ DECLARE_BITMAP(pcm_dev_bits, SNDRV_PCM_DEVICES);
+
+ /* misc op flags */
+ unsigned int needs_damn_long_delay :1;
+ unsigned int allow_bus_reset:1; /* allow bus reset at fatal error */
+ unsigned int sync_write:1; /* sync after verb write */
+ /* status for codec/controller */
+ unsigned int shutdown :1; /* being unloaded */
+ unsigned int rirb_error:1; /* error in codec communication */
+ unsigned int response_reset:1; /* controller was reset */
+ unsigned int in_reset:1; /* during reset operation */
};
/*
unsigned int subs;
unsigned int subs_mask;
unsigned int rev;
+ hda_nid_t afg, mfg;
const char *name;
int (*patch)(struct hda_codec *codec);
};
+struct hda_codec_preset_list {
+ const struct hda_codec_preset *preset;
+ struct module *owner;
+ struct list_head list;
+};
+
+/* initial hook */
+int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset);
+int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset);
+
/* ops set by the preset patch */
struct hda_codec_ops {
int (*build_controls)(struct hda_codec *codec);
int (*init)(struct hda_codec *codec);
void (*free)(struct hda_codec *codec);
void (*unsol_event)(struct hda_codec *codec, unsigned int res);
-#ifdef CONFIG_PM
+#ifdef SND_HDA_NEEDS_RESUME
int (*suspend)(struct hda_codec *codec, pm_message_t state);
int (*resume)(struct hda_codec *codec);
#endif
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid);
+#endif
};
/* record for amp information cache */
-struct hda_amp_info {
+struct hda_cache_head {
u32 key; /* hash key */
+ u16 val; /* assigned value */
+ u16 next; /* next link; -1 = terminal */
+};
+
+struct hda_amp_info {
+ struct hda_cache_head head;
u32 amp_caps; /* amp capabilities */
u16 vol[2]; /* current volume & mute */
- u16 status; /* update flag */
- u16 next; /* next link */
+};
+
+struct hda_cache_rec {
+ u16 hash[64]; /* hash table for index */
+ struct snd_array buf; /* record entries */
};
/* PCM callbacks */
struct hda_pcm_ops ops;
};
+/* PCM types */
+enum {
+ HDA_PCM_TYPE_AUDIO,
+ HDA_PCM_TYPE_SPDIF,
+ HDA_PCM_TYPE_HDMI,
+ HDA_PCM_TYPE_MODEM,
+ HDA_PCM_NTYPES
+};
+
/* for PCM creation */
struct hda_pcm {
char *name;
struct hda_pcm_stream stream[2];
- unsigned int is_modem; /* modem codec? */
+ unsigned int pcm_type; /* HDA_PCM_TYPE_XXX */
+ int device; /* device number to assign */
+ struct snd_pcm *pcm; /* assigned PCM instance */
};
/* codec information */
hda_nid_t mfg; /* MFG node id */
/* ids */
+ u32 function_id;
u32 vendor_id;
u32 subsystem_id;
u32 revision_id;
/* detected preset */
const struct hda_codec_preset *preset;
+ struct module *owner;
+ const char *vendor_name; /* codec vendor name */
+ const char *chip_name; /* codec chip name */
+ const char *modelname; /* model name for preset */
/* set by patch */
struct hda_codec_ops patch_ops;
- /* resume phase - all controls should update even if
- * the values are not changed
- */
- unsigned int in_resume;
-
/* PCM to create, set by patch_ops.build_pcms callback */
unsigned int num_pcms;
struct hda_pcm *pcm_info;
/* codec specific info */
void *spec;
+ /* beep device */
+ struct hda_beep *beep;
+
/* widget capabilities cache */
unsigned int num_nodes;
hda_nid_t start_nid;
u32 *wcaps;
- /* hash for amp access */
- u16 amp_hash[32];
- int num_amp_entries;
- int amp_info_size;
- struct hda_amp_info *amp_info;
+ struct snd_array mixers; /* list of assigned mixer elements */
+
+ struct hda_cache_rec amp_cache; /* cache for amp access */
+ struct hda_cache_rec cmd_cache; /* cache for other commands */
struct mutex spdif_mutex;
+ struct mutex control_mutex;
unsigned int spdif_status; /* IEC958 status bits */
unsigned short spdif_ctls; /* SPDIF control bits */
unsigned int spdif_in_enable; /* SPDIF input enable? */
+ hda_nid_t *slave_dig_outs; /* optional digital out slave widgets */
+ struct snd_array init_pins; /* initial (BIOS) pin configurations */
+ struct snd_array driver_pins; /* pin configs set by codec parser */
+#ifdef CONFIG_SND_HDA_HWDEP
struct snd_hwdep *hwdep; /* assigned hwdep device */
+ struct snd_array init_verbs; /* additional init verbs */
+ struct snd_array hints; /* additional hints */
+ struct snd_array user_pins; /* default pin configs to override */
+#endif
+
+ /* misc flags */
+ unsigned int spdif_status_reset :1; /* needs to toggle SPDIF for each
+ * status change
+ * (e.g. Realtek codecs)
+ */
+ unsigned int pin_amp_workaround:1; /* pin out-amp takes index
+ * (e.g. Conexant codecs)
+ */
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ unsigned int power_on :1; /* current (global) power-state */
+ unsigned int power_transition :1; /* power-state in transition */
+ int power_count; /* current (global) power refcount */
+ struct delayed_work power_work; /* delayed task for powerdown */
+#endif
+
+ /* codec-specific additional proc output */
+ void (*proc_widget_hook)(struct snd_info_buffer *buffer,
+ struct hda_codec *codec, hda_nid_t nid);
};
/* direction */
struct hda_bus **busp);
int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
struct hda_codec **codecp);
+int snd_hda_codec_configure(struct hda_codec *codec);
/*
* low level functions
/* unsolicited event */
int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex);
+/* cached write */
+#ifdef SND_HDA_NEEDS_RESUME
+int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
+ int direct, unsigned int verb, unsigned int parm);
+void snd_hda_sequence_write_cache(struct hda_codec *codec,
+ const struct hda_verb *seq);
+void snd_hda_codec_resume_cache(struct hda_codec *codec);
+#else
+#define snd_hda_codec_write_cache snd_hda_codec_write
+#define snd_hda_sequence_write_cache snd_hda_sequence_write
+#endif
+
+/* the struct for codec->pin_configs */
+struct hda_pincfg {
+ hda_nid_t nid;
+ unsigned int cfg;
+};
+
+unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid);
+int snd_hda_codec_set_pincfg(struct hda_codec *codec, hda_nid_t nid,
+ unsigned int cfg);
+int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
+ hda_nid_t nid, unsigned int cfg); /* for hwdep */
+
/*
* Mixer
*/
int snd_hda_build_controls(struct hda_bus *bus);
+int snd_hda_codec_build_controls(struct hda_codec *codec);
/*
* PCM
*/
int snd_hda_build_pcms(struct hda_bus *bus);
+int snd_hda_codec_build_pcms(struct hda_codec *codec);
void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
u32 stream_tag,
int channel_id, int format);
+void snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid);
unsigned int snd_hda_calc_stream_format(unsigned int rate,
unsigned int channels,
unsigned int format,
unsigned int maxbps);
-int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
- u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
unsigned int format);
* power management
*/
#ifdef CONFIG_PM
-int snd_hda_suspend(struct hda_bus *bus, pm_message_t state);
+int snd_hda_suspend(struct hda_bus *bus);
int snd_hda_resume(struct hda_bus *bus);
#endif
+/*
+ * get widget information
+ */
+const char *snd_hda_get_jack_connectivity(u32 cfg);
+const char *snd_hda_get_jack_type(u32 cfg);
+const char *snd_hda_get_jack_location(u32 cfg);
+
+/*
+ * power saving
+ */
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+void snd_hda_power_up(struct hda_codec *codec);
+void snd_hda_power_down(struct hda_codec *codec);
+#define snd_hda_codec_needs_resume(codec) codec->power_count
+#else
+static inline void snd_hda_power_up(struct hda_codec *codec) {}
+static inline void snd_hda_power_down(struct hda_codec *codec) {}
+#define snd_hda_codec_needs_resume(codec) 1
+#endif
+
+/*
+ * Codec modularization
+ */
+
+/* Export symbols only for communication with codec drivers;
+ * When built in kernel, all HD-audio drivers are supposed to be statically
+ * linked to the kernel. Thus, the symbols don't have to (or shouldn't) be
+ * exported unless it's built as a module.
+ */
+#ifdef MODULE
+#define EXPORT_SYMBOL_HDA(sym) EXPORT_SYMBOL_GPL(sym)
+#else
+#define EXPORT_SYMBOL_HDA(sym)
+#endif
+
#endif /* __SOUND_HDA_CODEC_H */
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