diff options
Diffstat (limited to 'sound/pci/hda/hda_controller.h')
| -rw-r--r-- | sound/pci/hda/hda_controller.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h new file mode 100644 index 000000000..324cba13c --- /dev/null +++ b/sound/pci/hda/hda_controller.h @@ -0,0 +1,216 @@ +/* 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 HDA_MAX_CODECS +#define AZX_DEFAULT_CODECS 4 + +/* driver quirks (capabilities) */ +/* bits 0-7 are used for indicating driver type */ +#define AZX_DCAPS_NO_TCSEL (1 << 8) /* No Intel TCSEL bit */ +#define AZX_DCAPS_NO_MSI (1 << 9) /* No MSI support */ +#define AZX_DCAPS_SNOOP_MASK (3 << 10) /* snoop type mask */ +#define AZX_DCAPS_SNOOP_OFF (1 << 12) /* snoop default off */ +#ifdef CONFIG_SND_HDA_I915 +#define AZX_DCAPS_I915_COMPONENT (1 << 13) /* bind with i915 gfx */ +#else +#define AZX_DCAPS_I915_COMPONENT 0 /* NOP */ +#endif +/* 14 unused */ +#define AZX_DCAPS_CTX_WORKAROUND (1 << 15) /* X-Fi workaround */ +#define AZX_DCAPS_POSFIX_LPIB (1 << 16) /* Use LPIB as default */ +#define AZX_DCAPS_AMD_WORKAROUND (1 << 17) /* AMD-specific workaround */ +#define AZX_DCAPS_NO_64BIT (1 << 18) /* No 64bit address */ +/* 19 unused */ +#define AZX_DCAPS_OLD_SSYNC (1 << 20) /* Old SSYNC reg for ICH */ +#define AZX_DCAPS_NO_ALIGN_BUFSIZE (1 << 21) /* no buffer size alignment */ +/* 22 unused */ +#define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23) /* BDLE in 4k boundary */ +/* 24 unused */ +#define AZX_DCAPS_COUNT_LPIB_DELAY (1 << 25) /* Take LPIB as delay */ +#define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */ +#define AZX_DCAPS_RETRY_PROBE (1 << 27) /* retry probe if no codec is configured */ +#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */ +#define AZX_DCAPS_NO_MSI64 (1 << 29) /* Stick to 32-bit MSIs */ +#define AZX_DCAPS_SEPARATE_STREAM_TAG (1 << 30) /* capture and playback use separate stream tag */ + +enum { + AZX_SNOOP_TYPE_NONE, + AZX_SNOOP_TYPE_SCH, + AZX_SNOOP_TYPE_ATI, + AZX_SNOOP_TYPE_NVIDIA, +}; + +struct azx_dev { + struct hdac_stream core; + + unsigned int irq_pending:1; + /* + * For VIA: + * A flag to ensure DMA position is 0 + * when link position is not greater than FIFO size + */ + unsigned int insufficient:1; +}; + +#define azx_stream(dev) (&(dev)->core) +#define stream_to_azx_dev(s) container_of(s, struct azx_dev, core) + +struct azx; + +/* Functions to read/write to hda registers. */ +struct hda_controller_ops { + /* Disable msi if supported, PCI only */ + int (*disable_msi_reset_irq)(struct azx *); + void (*pcm_mmap_prepare)(struct snd_pcm_substream *substream, + struct vm_area_struct *area); + /* Check if current position is acceptable */ + int (*position_check)(struct azx *chip, struct azx_dev *azx_dev); + /* enable/disable the link power */ + int (*link_power)(struct azx *chip, bool enable); +}; + +struct azx_pcm { + struct azx *chip; + struct snd_pcm *pcm; + struct hda_codec *codec; + struct hda_pcm *info; + struct list_head list; +}; + +typedef unsigned int (*azx_get_pos_callback_t)(struct azx *, struct azx_dev *); +typedef int (*azx_get_delay_callback_t)(struct azx *, struct azx_dev *, unsigned int pos); + +struct azx { + struct hda_bus bus; + + struct snd_card *card; + struct pci_dev *pci; + int dev_index; + + /* chip type specific */ + int driver_type; + unsigned int driver_caps; + int playback_streams; + int playback_index_offset; + int capture_streams; + int capture_index_offset; + int num_streams; + int jackpoll_interval; /* jack poll interval in jiffies */ + + /* Register interaction. */ + const struct hda_controller_ops *ops; + + /* position adjustment callbacks */ + azx_get_pos_callback_t get_position[2]; + azx_get_delay_callback_t get_delay[2]; + + /* locks */ + struct mutex open_mutex; /* Prevents concurrent open/close operations */ + + /* PCM */ + struct list_head pcm_list; /* azx_pcm list */ + + /* HD codec */ + int codec_probe_mask; /* copied from probe_mask option */ + unsigned int beep_mode; + +#ifdef CONFIG_SND_HDA_PATCH_LOADER + const struct firmware *fw; +#endif + + /* flags */ + int bdl_pos_adj; + unsigned int running:1; + unsigned int fallback_to_single_cmd:1; + unsigned int single_cmd:1; + unsigned int msi:1; + unsigned int probing:1; /* codec probing phase */ + unsigned int snoop:1; + unsigned int uc_buffer:1; /* non-cached pages for stream buffers */ + unsigned int align_buffer_size:1; + unsigned int region_requested:1; + unsigned int disabled:1; /* disabled by vga_switcheroo */ + unsigned int pm_prepared:1; + + /* GTS present */ + unsigned int gts_present:1; + +#ifdef CONFIG_SND_HDA_DSP_LOADER + struct azx_dev saved_azx_dev; +#endif +}; + +#define azx_bus(chip) (&(chip)->bus.core) +#define bus_to_azx(_bus) container_of(_bus, struct azx, bus.core) + +static inline bool azx_snoop(struct azx *chip) +{ + return !IS_ENABLED(CONFIG_X86) || chip->snoop; +} + +/* + * macros for easy use + */ + +#define azx_writel(chip, reg, value) \ + snd_hdac_chip_writel(azx_bus(chip), reg, value) +#define azx_readl(chip, reg) \ + snd_hdac_chip_readl(azx_bus(chip), reg) +#define azx_writew(chip, reg, value) \ + snd_hdac_chip_writew(azx_bus(chip), reg, value) +#define azx_readw(chip, reg) \ + snd_hdac_chip_readw(azx_bus(chip), reg) +#define azx_writeb(chip, reg, value) \ + snd_hdac_chip_writeb(azx_bus(chip), reg, value) +#define azx_readb(chip, reg) \ + snd_hdac_chip_readb(azx_bus(chip), reg) + +#define azx_has_pm_runtime(chip) \ + ((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME) + +/* PCM setup */ +static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream) +{ + return substream->runtime->private_data; +} +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) \ + snd_hdac_bus_alloc_stream_pages(azx_bus(chip)) +#define azx_free_stream_pages(chip) \ + snd_hdac_bus_free_stream_pages(azx_bus(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) \ + snd_hdac_bus_enter_link_reset(azx_bus(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 */ |