diff options
| author | Guneshwor Singh <guneshwor.o.singh@intel.com> | 2016-08-04 10:16:03 (GMT) |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-08-09 06:53:56 (GMT) |
| commit | 50279d9b5facde811280afe13dd8c79f0e7b21ed (patch) | |
| tree | 42bd30d815d8e3c67c4e96c41e38e083004445f8 /sound | |
| parent | 404735c9fd8adff8e5ad11e1f9f8db069d865698 (diff) | |
| download | linux-50279d9b5facde811280afe13dd8c79f0e7b21ed.tar.xz | |
ALSA - hda: Add support for parsing new HDA capabilities
Skylake onwards HDA controller supports new capabilities like
Global Time Stamping (GTS) capability. So add support to parse
these new capabilities.
Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com>
Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/hda_controller.c | 5 | ||||
| -rw-r--r-- | sound/pci/hda/hda_controller.h | 3 | ||||
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 17 |
3 files changed, 25 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 27de801..1567fe2 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -412,6 +412,11 @@ static int azx_pcm_open(struct snd_pcm_substream *substream) goto unlock; } runtime->private_data = azx_dev; + + if (chip->gts_present) + azx_pcm_hw.info = azx_pcm_hw.info | + SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME; + runtime->hw = azx_pcm_hw; runtime->hw.channels_min = hinfo->channels_min; runtime->hw.channels_max = hinfo->channels_max; diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h index ec63bbf..a50e053 100644 --- a/sound/pci/hda/hda_controller.h +++ b/sound/pci/hda/hda_controller.h @@ -159,6 +159,9 @@ struct azx { unsigned int region_requested:1; unsigned int disabled:1; /* disabled by vga_switcheroo */ + /* GTS present */ + unsigned int gts_present:1; + #ifdef CONFIG_SND_HDA_DSP_LOADER struct azx_dev saved_azx_dev; #endif diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 89dacf9..4786f43 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -54,6 +54,7 @@ /* for snoop control */ #include <asm/pgtable.h> #include <asm/cacheflush.h> +#include <asm/cpufeature.h> #endif #include <sound/core.h> #include <sound/initval.h> @@ -1655,6 +1656,22 @@ static int azx_first_init(struct azx *chip) return -ENXIO; } + if (IS_SKL_PLUS(pci)) + snd_hdac_bus_parse_capabilities(bus); + + /* + * Some Intel CPUs has always running timer (ART) feature and + * controller may have Global time sync reporting capability, so + * check both of these before declaring synchronized time reporting + * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME + */ + chip->gts_present = false; + +#ifdef CONFIG_X86 + if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART)) + chip->gts_present = true; +#endif + if (chip->msi) { if (chip->driver_caps & AZX_DCAPS_NO_MSI64) { dev_dbg(card->dev, "Disabling 64bit MSI\n"); |