/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Common functionality for the alsa driver code base for HD Audio. */ #ifndef __SOUND_HDA_CONTROLLER_H #define __SOUND_HDA_CONTROLLER_H #include <linux/timecounter.h> #include <linux/interrupt.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/initval.h> #include <sound/hda_codec.h> #include <sound/hda_register.h> #define AZX_MAX_CODECS … #define AZX_DEFAULT_CODECS … /* driver quirks (capabilities) */ /* bits 0-7 are used for indicating driver type */ #define AZX_DCAPS_NO_TCSEL … #define AZX_DCAPS_NO_MSI … #define AZX_DCAPS_SNOOP_MASK … #define AZX_DCAPS_SNOOP_OFF … #ifdef CONFIG_SND_HDA_I915 #define AZX_DCAPS_I915_COMPONENT … #else #define AZX_DCAPS_I915_COMPONENT … #endif #define AZX_DCAPS_AMD_ALLOC_FIX … #define AZX_DCAPS_CTX_WORKAROUND … #define AZX_DCAPS_POSFIX_LPIB … #define AZX_DCAPS_AMD_WORKAROUND … #define AZX_DCAPS_NO_64BIT … /* 19 unused */ #define AZX_DCAPS_OLD_SSYNC … #define AZX_DCAPS_NO_ALIGN_BUFSIZE … /* 22 unused */ #define AZX_DCAPS_4K_BDLE_BOUNDARY … /* 24 unused */ #define AZX_DCAPS_COUNT_LPIB_DELAY … #define AZX_DCAPS_PM_RUNTIME … #define AZX_DCAPS_RETRY_PROBE … #define AZX_DCAPS_CORBRP_SELF_CLEAR … #define AZX_DCAPS_NO_MSI64 … #define AZX_DCAPS_SEPARATE_STREAM_TAG … #define AZX_DCAPS_PIO_COMMANDS … enum { … }; struct azx_dev { … }; #define azx_stream(dev) … #define stream_to_azx_dev(s) … struct azx; /* Functions to read/write to hda registers. */ struct hda_controller_ops { … }; struct azx_pcm { … }; azx_get_pos_callback_t; azx_get_delay_callback_t; struct azx { … }; #define azx_bus(chip) … #define bus_to_azx(_bus) … static inline bool azx_snoop(struct azx *chip) { … } /* * macros for easy use */ #define azx_writel(chip, reg, value) … #define azx_readl(chip, reg) … #define azx_writew(chip, reg, value) … #define azx_readw(chip, reg) … #define azx_writeb(chip, reg, value) … #define azx_readb(chip, reg) … #define azx_has_pm_runtime(chip) … /* PCM setup */ static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream) { … } unsigned int azx_get_position(struct azx *chip, struct azx_dev *azx_dev); unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev); unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev); /* Stream control. */ void azx_stop_all_streams(struct azx *chip); /* Allocation functions. */ #define azx_alloc_stream_pages(chip) … #define azx_free_stream_pages(chip) … /* Low level azx interface */ void azx_init_chip(struct azx *chip, bool full_reset); void azx_stop_chip(struct azx *chip); #define azx_enter_link_reset(chip) … irqreturn_t azx_interrupt(int irq, void *dev_id); /* Codec interface */ int azx_bus_init(struct azx *chip, const char *model); int azx_probe_codecs(struct azx *chip, unsigned int max_slots); int azx_codec_configure(struct azx *chip); int azx_init_streams(struct azx *chip); void azx_free_streams(struct azx *chip); #endif /* __SOUND_HDA_CONTROLLER_H */
Codebase Browser
linux