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linux/sound/pci/hda/hda_controller.h
Kai-Heng Feng 0a4c091673 ALSA: hda: Separate runtime and system suspend 
[ Upstream commit f5dac54d9d ]

Both pm_runtime_force_suspend() and pm_runtime_force_resume() have
some implicit checks, so it can make code flow more straightforward if
we separate runtime and system suspend callbacks.

High Definition Audio Specification, 4.5.9.3 Codec Wake From System S3
states that codec can wake the system up from S3 if WAKEEN is toggled.
Since HDA controller has different wakeup settings for runtime and
system susend, we also need to explicitly disable direct-complete which
can be enabled automatically by PCI core. In addition to that, avoid
waking up codec if runtime resume is for system suspend, to not break
direct-complete for codecs.

While at it, also remove AZX_DCAPS_SUSPEND_SPURIOUS_WAKEUP, as the
original bug commit a6630529ae ("ALSA: hda: Workaround for spurious
wakeups on some Intel platforms") solves doesn't happen with this
patch.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20201027130038.16463-3-kai.heng.feng@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-11-18 19:20:22 +01:00

217 lines
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/* 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 */
#define AZX_DCAPS_SYNC_WRITE (1 << 19) /* sync each cmd write */
#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 */
/* 27 unused */
#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 */
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