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ALSA: hda - Add AZX_DCAPS_SNOOP_OFF (and refactor snoop setup) 

Add a new driver_caps bit, AZX_DCAPS_SNOOP_OFF, to set the snoop off
as default.  This new bit is used for the checks in
azx_check_snoop_available().  Most of case-switches are replaced with
the new dcaps in each entry.

While working on it, for avoiding to spend more bits, combine three
bits AZX_DCAPS_SNOOP_SCH, AZX_DCAPS_SNOOP_ATI and
AZX_DCAPS_SNOOP_NVIDIA bits into a flat type of two bits.  This
reduces the bits usages, and assign AZX_DCAPS_OFF to this empty bit
now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-11-25 11:28:07 +01:00
Родитель acf403ecc4
Коммит 37e661ee10
2 изменённых файлов: 47 добавлений и 36 удалений
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71
sound/pci/hda/hda_intel.c
Просмотреть файл

@ -272,42 +272,51 @@ enum {
AZX_NUM_DRIVERS, /* keep this as last entry */
};
#define azx_get_snoop_type(chip) \
(((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
#define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
/* quirks for Intel PCH */
#define AZX_DCAPS_INTEL_PCH_NOPM \
(AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_BUFSIZE | \
AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_REVERSE_ASSIGN)
(AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
AZX_DCAPS_REVERSE_ASSIGN | AZX_DCAPS_SNOOP_TYPE(SCH))
#define AZX_DCAPS_INTEL_PCH \
(AZX_DCAPS_INTEL_PCH_NOPM | AZX_DCAPS_PM_RUNTIME)
#define AZX_DCAPS_INTEL_HASWELL \
(AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_ALIGN_BUFSIZE | \
AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME | \
AZX_DCAPS_I915_POWERWELL)
(AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_POWERWELL |\
AZX_DCAPS_SNOOP_TYPE(SCH))
/* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
#define AZX_DCAPS_INTEL_BROADWELL \
(AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_ALIGN_BUFSIZE | \
AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_PM_RUNTIME | \
AZX_DCAPS_I915_POWERWELL)
(AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_POSFIX_LPIB |\
AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_POWERWELL |\
AZX_DCAPS_SNOOP_TYPE(SCH))
/* quirks for ATI SB / AMD Hudson */
#define AZX_DCAPS_PRESET_ATI_SB \
(AZX_DCAPS_ATI_SNOOP | AZX_DCAPS_NO_TCSEL | \
AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB)
(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB |\
AZX_DCAPS_SNOOP_TYPE(ATI))
/* quirks for ATI/AMD HDMI */
#define AZX_DCAPS_PRESET_ATI_HDMI \
(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB)
/* quirks for ATI HDMI with snoop off */
#define AZX_DCAPS_PRESET_ATI_HDMI_NS \
(AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
/* quirks for Nvidia */
#define AZX_DCAPS_PRESET_NVIDIA \
(AZX_DCAPS_NVIDIA_SNOOP | AZX_DCAPS_RIRB_DELAY | AZX_DCAPS_NO_MSI |\
AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_NO_64BIT |\
AZX_DCAPS_CORBRP_SELF_CLEAR)
(AZX_DCAPS_RIRB_DELAY | AZX_DCAPS_NO_MSI | AZX_DCAPS_ALIGN_BUFSIZE |\
AZX_DCAPS_NO_64BIT | AZX_DCAPS_CORBRP_SELF_CLEAR |\
AZX_DCAPS_SNOOP_TYPE(NVIDIA))
#define AZX_DCAPS_PRESET_CTHDA \
(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_4K_BDLE_BOUNDARY)
(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
/*
* VGA-switcher support
@ -436,6 +445,8 @@ static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
static void azx_init_pci(struct azx *chip)
{
int snoop_type = azx_get_snoop_type(chip);
/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
* TCSEL == Traffic Class Select Register, which sets PCI express QOS
* Ensuring these bits are 0 clears playback static on some HD Audio
@ -450,7 +461,7 @@ static void azx_init_pci(struct azx *chip)
/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
* we need to enable snoop.
*/
if (chip->driver_caps & AZX_DCAPS_ATI_SNOOP) {
if (snoop_type == AZX_SNOOP_TYPE_ATI) {
dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
azx_snoop(chip));
update_pci_byte(chip->pci,
@ -459,7 +470,7 @@ static void azx_init_pci(struct azx *chip)
}
/* For NVIDIA HDA, enable snoop */
if (chip->driver_caps & AZX_DCAPS_NVIDIA_SNOOP) {
if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
azx_snoop(chip));
update_pci_byte(chip->pci,
@ -474,7 +485,7 @@ static void azx_init_pci(struct azx *chip)
}
/* Enable SCH/PCH snoop if needed */
if (chip->driver_caps & AZX_DCAPS_SCH_SNOOP) {
if (snoop_type == AZX_SNOOP_TYPE_SCH) {
unsigned short snoop;
pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
@ -1361,8 +1372,8 @@ static void azx_check_snoop_available(struct azx *chip)
{
bool snoop = chip->snoop;
switch (chip->driver_type) {
case AZX_DRIVER_VIA:
if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
chip->driver_type == AZX_DRIVER_VIA) {
/* force to non-snoop mode for a new VIA controller
* when BIOS is set
*/
@ -1372,17 +1383,11 @@ static void azx_check_snoop_available(struct azx *chip)
if (!(val & 0x80) && chip->pci->revision == 0x30)
snoop = false;
}
break;
case AZX_DRIVER_ATIHDMI_NS:
/* new ATI HDMI requires non-snoop */
snoop = false;
break;
case AZX_DRIVER_CTHDA:
case AZX_DRIVER_CMEDIA:
snoop = false;
break;
}
if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
snoop = false;
if (snoop != chip->snoop) {
dev_info(chip->card->dev, "Force to %s mode\n",
snoop ? "snoop" : "non-snoop");
@ -2116,13 +2121,13 @@ static const struct pci_device_id azx_ids[] = {
{ PCI_DEVICE(0x1002, 0xaa98),
.driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
{ PCI_DEVICE(0x1002, 0x9902),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
{ PCI_DEVICE(0x1002, 0xaaa0),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
{ PCI_DEVICE(0x1002, 0xaaa8),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
{ PCI_DEVICE(0x1002, 0xaab0),
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
.driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
/* VIA VT8251/VT8237A */
{ PCI_DEVICE(0x1106, 0x3288),
.driver_data = AZX_DRIVER_VIA | AZX_DCAPS_POSFIX_VIA },
@ -2169,7 +2174,7 @@ static const struct pci_device_id azx_ids[] = {
/* CM8888 */
{ PCI_DEVICE(0x13f6, 0x5011),
.driver_data = AZX_DRIVER_CMEDIA |
AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB },
AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
/* Vortex86MX */
{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
/* VMware HDAudio */

12
sound/pci/hda/hda_priv.h
Просмотреть файл

@ -152,9 +152,8 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
/* 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_ATI_SNOOP (1 << 10) /* ATI snoop enable */
#define AZX_DCAPS_NVIDIA_SNOOP (1 << 11) /* Nvidia snoop enable */
#define AZX_DCAPS_SCH_SNOOP (1 << 12) /* SCH/PCH snoop enable */
#define AZX_DCAPS_SNOOP_MASK (3 << 10) /* snoop type mask */
#define AZX_DCAPS_SNOOP_OFF (1 << 12) /* snoop default off */
#define AZX_DCAPS_RIRB_DELAY (1 << 13) /* Long delay in read loop */
#define AZX_DCAPS_RIRB_PRE_DELAY (1 << 14) /* Put a delay before read */
#define AZX_DCAPS_CTX_WORKAROUND (1 << 15) /* X-Fi workaround */
@ -172,6 +171,13 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
#define AZX_DCAPS_I915_POWERWELL (1 << 27) /* HSW i915 powerwell support */
#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */
enum {
AZX_SNOOP_TYPE_NONE ,
AZX_SNOOP_TYPE_SCH,
AZX_SNOOP_TYPE_ATI,
AZX_SNOOP_TYPE_NVIDIA,
};
/* HD Audio class code */
#define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403