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Code Editor : hdaudio.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * HD-audio core stuff */ #ifndef __SOUND_HDAUDIO_H #define __SOUND_HDAUDIO_H #include <linux/device.h> #include <linux/interrupt.h> #include <linux/timecounter.h> #include <sound/core.h> #include <sound/memalloc.h> #include <sound/hda_verbs.h> #include <drm/i915_component.h> /* codec node id */ typedef u16 hda_nid_t; struct hdac_bus; struct hdac_stream; struct hdac_device; struct hdac_driver; struct hdac_widget_tree; struct hda_device_id; /* * exported bus type */ extern struct bus_type snd_hda_bus_type; /* * generic arrays */ struct snd_array { unsigned int used; unsigned int alloced; unsigned int elem_size; unsigned int alloc_align; void *list; }; /* * HD-audio codec base device */ struct hdac_device { struct device dev; int type; struct hdac_bus *bus; unsigned int addr; /* codec address */ struct list_head list; /* list point for bus codec_list */ hda_nid_t afg; /* AFG node id */ hda_nid_t mfg; /* MFG node id */ /* ids */ unsigned int vendor_id; unsigned int subsystem_id; unsigned int revision_id; unsigned int afg_function_id; unsigned int mfg_function_id; unsigned int afg_unsol:1; unsigned int mfg_unsol:1; unsigned int power_caps; /* FG power caps */ const char *vendor_name; /* codec vendor name */ const char *chip_name; /* codec chip name */ /* verb exec op override */ int (*exec_verb)(struct hdac_device *dev, unsigned int cmd, unsigned int flags, unsigned int *res); /* widgets */ unsigned int num_nodes; hda_nid_t start_nid, end_nid; /* misc flags */ atomic_t in_pm; /* suspend/resume being performed */ bool link_power_control:1; /* sysfs */ struct hdac_widget_tree *widgets; /* regmap */ struct regmap *regmap; struct snd_array vendor_verbs; bool lazy_cache:1; /* don't wake up for writes */ bool caps_overwriting:1; /* caps overwrite being in process */ bool cache_coef:1; /* cache COEF read/write too */ }; /* device/driver type used for matching */ enum { HDA_DEV_CORE, HDA_DEV_LEGACY, HDA_DEV_ASOC, }; /* direction */ enum { HDA_INPUT, HDA_OUTPUT }; #define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev) int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus, const char *name, unsigned int addr); void snd_hdac_device_exit(struct hdac_device *dev); int snd_hdac_device_register(struct hdac_device *codec); void snd_hdac_device_unregister(struct hdac_device *codec); int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name); int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size); int snd_hdac_refresh_widgets(struct hdac_device *codec, bool sysfs); unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, unsigned int verb, unsigned int parm); int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, unsigned int flags, unsigned int *res); int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, unsigned int verb, unsigned int parm, unsigned int *res); int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, unsigned int *res); int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, int parm); int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, unsigned int parm, unsigned int val); int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, hda_nid_t *conn_list, int max_conns); int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, hda_nid_t *start_id); unsigned int snd_hdac_calc_stream_format(unsigned int rate, unsigned int channels, unsigned int format, unsigned int maxbps, unsigned short spdif_ctls); int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, u32 *ratesp, u64 *formatsp, unsigned int *bpsp); bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, unsigned int format); int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, int flags, unsigned int verb, unsigned int parm); int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, int flags, unsigned int verb, unsigned int parm); bool snd_hdac_check_power_state(struct hdac_device *hdac, hda_nid_t nid, unsigned int target_state); /** * snd_hdac_read_parm - read a codec parameter * @codec: the codec object * @nid: NID to read a parameter * @parm: parameter to read * * Returns -1 for error. If you need to distinguish the error more * strictly, use _snd_hdac_read_parm() directly. */ static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm) { unsigned int val; return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val; } #ifdef CONFIG_PM int snd_hdac_power_up(struct hdac_device *codec); int snd_hdac_power_down(struct hdac_device *codec); int snd_hdac_power_up_pm(struct hdac_device *codec); int snd_hdac_power_down_pm(struct hdac_device *codec); int snd_hdac_keep_power_up(struct hdac_device *codec); #else static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; } static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; } static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; } static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; } static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; } #endif /* * HD-audio codec base driver */ struct hdac_driver { struct device_driver driver; int type; const struct hda_device_id *id_table; int (*match)(struct hdac_device *dev, struct hdac_driver *drv); void (*unsol_event)(struct hdac_device *dev, unsigned int event); }; #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver) const struct hda_device_id * hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv); /* * Bus verb operators */ struct hdac_bus_ops { /* send a single command */ int (*command)(struct hdac_bus *bus, unsigned int cmd); /* get a response from the last command */ int (*get_response)(struct hdac_bus *bus, unsigned int addr, unsigned int *res); /* control the link power */ int (*link_power)(struct hdac_bus *bus, bool enable); }; /* * Lowlevel I/O operators */ struct hdac_io_ops { /* mapped register accesses */ void (*reg_writel)(u32 value, u32 __iomem *addr); u32 (*reg_readl)(u32 __iomem *addr); void (*reg_writew)(u16 value, u16 __iomem *addr); u16 (*reg_readw)(u16 __iomem *addr); void (*reg_writeb)(u8 value, u8 __iomem *addr); u8 (*reg_readb)(u8 __iomem *addr); /* Allocation ops */ int (*dma_alloc_pages)(struct hdac_bus *bus, int type, size_t size, struct snd_dma_buffer *buf); void (*dma_free_pages)(struct hdac_bus *bus, struct snd_dma_buffer *buf); }; #define HDA_UNSOL_QUEUE_SIZE 64 #define HDA_MAX_CODECS 8 /* limit by controller side */ /* * CORB/RIRB * * Each CORB entry is 4byte, RIRB is 8byte */ struct hdac_rb { __le32 *buf; /* virtual address of CORB/RIRB buffer */ dma_addr_t addr; /* physical address of CORB/RIRB buffer */ unsigned short rp, wp; /* RIRB read/write pointers */ int cmds[HDA_MAX_CODECS]; /* number of pending requests */ u32 res[HDA_MAX_CODECS]; /* last read value */ }; /* * HD-audio bus base driver * * @ppcap: pp capabilities pointer * @spbcap: SPIB capabilities pointer * @mlcap: MultiLink capabilities pointer * @gtscap: gts capabilities pointer * @drsmcap: dma resume capabilities pointer */ struct hdac_bus { struct device *dev; const struct hdac_bus_ops *ops; const struct hdac_io_ops *io_ops; /* h/w resources */ unsigned long addr; void __iomem *remap_addr; int irq; void __iomem *ppcap; void __iomem *spbcap; void __iomem *mlcap; void __iomem *gtscap; void __iomem *drsmcap; /* codec linked list */ struct list_head codec_list; unsigned int num_codecs; /* link caddr -> codec */ struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1]; /* unsolicited event queue */ u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */ unsigned int unsol_rp, unsol_wp; struct work_struct unsol_work; /* bit flags of detected codecs */ unsigned long codec_mask; /* bit flags of powered codecs */ unsigned long codec_powered; /* CORB/RIRB */ struct hdac_rb corb; struct hdac_rb rirb; unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */ /* CORB/RIRB and position buffers */ struct snd_dma_buffer rb; struct snd_dma_buffer posbuf; /* hdac_stream linked list */ struct list_head stream_list; /* operation state */ bool chip_init:1; /* h/w initialized */ /* behavior flags */ bool sync_write:1; /* sync after verb write */ bool use_posbuf:1; /* use position buffer */ bool snoop:1; /* enable snooping */ bool align_bdle_4k:1; /* BDLE align 4K boundary */ bool reverse_assign:1; /* assign devices in reverse order */ bool corbrp_self_clear:1; /* CORBRP clears itself after reset */ int bdl_pos_adj; /* BDL position adjustment */ /* locks */ spinlock_t reg_lock; struct mutex cmd_mutex; /* i915 component interface */ struct i915_audio_component *audio_component; int i915_power_refcount; }; int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, const struct hdac_bus_ops *ops, const struct hdac_io_ops *io_ops); void snd_hdac_bus_exit(struct hdac_bus *bus); int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr, unsigned int cmd, unsigned int *res); int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr, unsigned int cmd, unsigned int *res); void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex); int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec); void snd_hdac_bus_remove_device(struct hdac_bus *bus, struct hdac_device *codec); static inline void snd_hdac_codec_link_up(struct hdac_device *codec) { set_bit(codec->addr, &codec->bus->codec_powered); } static inline void snd_hdac_codec_link_down(struct hdac_device *codec) { clear_bit(codec->addr, &codec->bus->codec_powered); } int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val); int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr, unsigned int *res); int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus); int snd_hdac_link_power(struct hdac_device *codec, bool enable); bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset); void snd_hdac_bus_stop_chip(struct hdac_bus *bus); void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus); void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus); void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus); void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus); int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset); void snd_hdac_bus_update_rirb(struct hdac_bus *bus); int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status, void (*ack)(struct hdac_bus *, struct hdac_stream *)); int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus); void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus); /* * macros for easy use */ #define _snd_hdac_chip_writeb(chip, reg, value) \ ((chip)->io_ops->reg_writeb(value, (chip)->remap_addr + (reg))) #define _snd_hdac_chip_readb(chip, reg) \ ((chip)->io_ops->reg_readb((chip)->remap_addr + (reg))) #define _snd_hdac_chip_writew(chip, reg, value) \ ((chip)->io_ops->reg_writew(value, (chip)->remap_addr + (reg))) #define _snd_hdac_chip_readw(chip, reg) \ ((chip)->io_ops->reg_readw((chip)->remap_addr + (reg))) #define _snd_hdac_chip_writel(chip, reg, value) \ ((chip)->io_ops->reg_writel(value, (chip)->remap_addr + (reg))) #define _snd_hdac_chip_readl(chip, reg) \ ((chip)->io_ops->reg_readl((chip)->remap_addr + (reg))) /* read/write a register, pass without AZX_REG_ prefix */ #define snd_hdac_chip_writel(chip, reg, value) \ _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value) #define snd_hdac_chip_writew(chip, reg, value) \ _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value) #define snd_hdac_chip_writeb(chip, reg, value) \ _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value) #define snd_hdac_chip_readl(chip, reg) \ _snd_hdac_chip_readl(chip, AZX_REG_ ## reg) #define snd_hdac_chip_readw(chip, reg) \ _snd_hdac_chip_readw(chip, AZX_REG_ ## reg) #define snd_hdac_chip_readb(chip, reg) \ _snd_hdac_chip_readb(chip, AZX_REG_ ## reg) /* update a register, pass without AZX_REG_ prefix */ #define snd_hdac_chip_updatel(chip, reg, mask, val) \ snd_hdac_chip_writel(chip, reg, \ (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val)) #define snd_hdac_chip_updatew(chip, reg, mask, val) \ snd_hdac_chip_writew(chip, reg, \ (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val)) #define snd_hdac_chip_updateb(chip, reg, mask, val) \ snd_hdac_chip_writeb(chip, reg, \ (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val)) /* * HD-audio stream */ struct hdac_stream { struct hdac_bus *bus; struct snd_dma_buffer bdl; /* BDL buffer */ __le32 *posbuf; /* position buffer pointer */ int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */ unsigned int bufsize; /* size of the play buffer in bytes */ unsigned int period_bytes; /* size of the period in bytes */ unsigned int frags; /* number for period in the play buffer */ unsigned int fifo_size; /* FIFO size */ void __iomem *sd_addr; /* stream descriptor pointer */ u32 sd_int_sta_mask; /* stream int status mask */ /* pcm support */ struct snd_pcm_substream *substream; /* assigned substream, * set in PCM open */ unsigned int format_val; /* format value to be set in the * controller and the codec */ unsigned char stream_tag; /* assigned stream */ unsigned char index; /* stream index */ int assigned_key; /* last device# key assigned to */ bool opened:1; bool running:1; bool prepared:1; bool no_period_wakeup:1; bool locked:1; /* timestamp */ unsigned long start_wallclk; /* start + minimum wallclk */ unsigned long period_wallclk; /* wallclk for period */ struct timecounter tc; struct cyclecounter cc; int delay_negative_threshold; struct list_head list; #ifdef CONFIG_SND_HDA_DSP_LOADER /* DSP access mutex */ struct mutex dsp_mutex; #endif }; void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev, int idx, int direction, int tag); struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus, struct snd_pcm_substream *substream); void snd_hdac_stream_release(struct hdac_stream *azx_dev); struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus, int dir, int stream_tag); int snd_hdac_stream_setup(struct hdac_stream *azx_dev); void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev); int snd_hdac_stream_set_params(struct hdac_stream *azx_dev, unsigned int format_val); void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start); void snd_hdac_stream_clear(struct hdac_stream *azx_dev); void snd_hdac_stream_stop(struct hdac_stream *azx_dev); void snd_hdac_stream_reset(struct hdac_stream *azx_dev); void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set, unsigned int streams, unsigned int reg); void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, unsigned int streams); void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, unsigned int streams); /* * macros for easy use */ #define _snd_hdac_stream_write(type, dev, reg, value) \ ((dev)->bus->io_ops->reg_write ## type(value, (dev)->sd_addr + (reg))) #define _snd_hdac_stream_read(type, dev, reg) \ ((dev)->bus->io_ops->reg_read ## type((dev)->sd_addr + (reg))) /* read/write a register, pass without AZX_REG_ prefix */ #define snd_hdac_stream_writel(dev, reg, value) \ _snd_hdac_stream_write(l, dev, AZX_REG_ ## reg, value) #define snd_hdac_stream_writew(dev, reg, value) \ _snd_hdac_stream_write(w, dev, AZX_REG_ ## reg, value) #define snd_hdac_stream_writeb(dev, reg, value) \ _snd_hdac_stream_write(b, dev, AZX_REG_ ## reg, value) #define snd_hdac_stream_readl(dev, reg) \ _snd_hdac_stream_read(l, dev, AZX_REG_ ## reg) #define snd_hdac_stream_readw(dev, reg) \ _snd_hdac_stream_read(w, dev, AZX_REG_ ## reg) #define snd_hdac_stream_readb(dev, reg) \ _snd_hdac_stream_read(b, dev, AZX_REG_ ## reg) /* update a register, pass without AZX_REG_ prefix */ #define snd_hdac_stream_updatel(dev, reg, mask, val) \ snd_hdac_stream_writel(dev, reg, \ (snd_hdac_stream_readl(dev, reg) & \ ~(mask)) | (val)) #define snd_hdac_stream_updatew(dev, reg, mask, val) \ snd_hdac_stream_writew(dev, reg, \ (snd_hdac_stream_readw(dev, reg) & \ ~(mask)) | (val)) #define snd_hdac_stream_updateb(dev, reg, mask, val) \ snd_hdac_stream_writeb(dev, reg, \ (snd_hdac_stream_readb(dev, reg) & \ ~(mask)) | (val)) #ifdef CONFIG_SND_HDA_DSP_LOADER /* DSP lock helpers */ #define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) #define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) #define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) #define snd_hdac_stream_is_locked(dev) ((dev)->locked) /* DSP loader helpers */ int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, unsigned int byte_size, struct snd_dma_buffer *bufp); void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start); void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, struct snd_dma_buffer *dmab); #else /* CONFIG_SND_HDA_DSP_LOADER */ #define snd_hdac_dsp_lock_init(dev) do {} while (0) #define snd_hdac_dsp_lock(dev) do {} while (0) #define snd_hdac_dsp_unlock(dev) do {} while (0) #define snd_hdac_stream_is_locked(dev) 0 static inline int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, unsigned int byte_size, struct snd_dma_buffer *bufp) { return 0; } static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start) { } static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, struct snd_dma_buffer *dmab) { } #endif /* CONFIG_SND_HDA_DSP_LOADER */ /* * generic array helpers */ 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; } #endif /* __SOUND_HDAUDIO_H */
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