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-rw-r--r--sound/pci/hda/hda_intel.c30
-rw-r--r--sound/pci/hda/patch_ca0132.c3
-rw-r--r--sound/pci/hda/patch_conexant.c5
-rw-r--r--sound/pci/hda/patch_hdmi.c9
-rw-r--r--sound/pci/hda/patch_realtek.c55
-rw-r--r--sound/pci/hda/patch_sigmatel.c45
6 files changed, 126 insertions, 21 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 8a7fbdc..bff5c8b 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -312,6 +312,10 @@ enum {
(AZX_DCAPS_INTEL_PCH | AZX_DCAPS_SEPARATE_STREAM_TAG |\
AZX_DCAPS_I915_POWERWELL)
+#define AZX_DCAPS_INTEL_BROXTON \
+ (AZX_DCAPS_INTEL_PCH | AZX_DCAPS_SEPARATE_STREAM_TAG |\
+ AZX_DCAPS_I915_POWERWELL)
+
/* quirks for ATI SB / AMD Hudson */
#define AZX_DCAPS_PRESET_ATI_SB \
(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB |\
@@ -351,6 +355,8 @@ enum {
((pci)->device == 0x0d0c) || \
((pci)->device == 0x160c))
+#define IS_BROXTON(pci) ((pci)->device == 0x5a98)
+
static char *driver_short_names[] = {
[AZX_DRIVER_ICH] = "HDA Intel",
[AZX_DRIVER_PCH] = "HDA Intel PCH",
@@ -502,15 +508,36 @@ static void azx_init_pci(struct azx *chip)
}
}
+/*
+ * In BXT-P A0, HD-Audio DMA requests is later than expected,
+ * and makes an audio stream sensitive to system latencies when
+ * 24/32 bits are playing.
+ * Adjusting threshold of DMA fifo to force the DMA request
+ * sooner to improve latency tolerance at the expense of power.
+ */
+static void bxt_reduce_dma_latency(struct azx *chip)
+{
+ u32 val;
+
+ val = azx_readl(chip, SKL_EM4L);
+ val &= (0x3 << 20);
+ azx_writel(chip, SKL_EM4L, val);
+}
+
static void hda_intel_init_chip(struct azx *chip, bool full_reset)
{
struct hdac_bus *bus = azx_bus(chip);
+ struct pci_dev *pci = chip->pci;
if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
snd_hdac_set_codec_wakeup(bus, true);
azx_init_chip(chip, full_reset);
if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
snd_hdac_set_codec_wakeup(bus, false);
+
+ /* reduce dma latency to avoid noise */
+ if (IS_BROXTON(pci))
+ bxt_reduce_dma_latency(chip);
}
/* calculate runtime delay from LPIB */
@@ -2124,6 +2151,9 @@ static const struct pci_device_id azx_ids[] = {
/* Sunrise Point-LP */
{ PCI_DEVICE(0x8086, 0x9d70),
.driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
+ /* Broxton-P(Apollolake) */
+ { PCI_DEVICE(0x8086, 0x5a98),
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
/* Haswell */
{ PCI_DEVICE(0x8086, 0x0a0c),
.driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index f8a12ca4..4ef2259 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -778,7 +778,8 @@ static const struct hda_pintbl alienware_pincfgs[] = {
};
static const struct snd_pci_quirk ca0132_quirks[] = {
- SND_PCI_QUIRK(0x1028, 0x0685, "Alienware 15", QUIRK_ALIENWARE),
+ SND_PCI_QUIRK(0x1028, 0x0685, "Alienware 15 2015", QUIRK_ALIENWARE),
+ SND_PCI_QUIRK(0x1028, 0x0688, "Alienware 17 2015", QUIRK_ALIENWARE),
{}
};
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index c8b8ef5..ef19890 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -955,6 +955,7 @@ static int patch_conexant_auto(struct hda_codec *codec)
*/
static const struct hda_device_id snd_hda_id_conexant[] = {
+ HDA_CODEC_ENTRY(0x14f12008, "CX8200", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f15045, "CX20549 (Venice)", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f15047, "CX20551 (Waikiki)", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f15051, "CX20561 (Hermosa)", patch_conexant_auto),
@@ -972,9 +973,9 @@ static const struct hda_device_id snd_hda_id_conexant[] = {
HDA_CODEC_ENTRY(0x14f150ac, "CX20652", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f150b8, "CX20664", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f150b9, "CX20665", patch_conexant_auto),
- HDA_CODEC_ENTRY(0x14f150f1, "CX20721", patch_conexant_auto),
+ HDA_CODEC_ENTRY(0x14f150f1, "CX21722", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f150f2, "CX20722", patch_conexant_auto),
- HDA_CODEC_ENTRY(0x14f150f3, "CX20723", patch_conexant_auto),
+ HDA_CODEC_ENTRY(0x14f150f3, "CX21724", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f150f4, "CX20724", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f1510f, "CX20751/2", patch_conexant_auto),
HDA_CODEC_ENTRY(0x14f15110, "CX20751/2", patch_conexant_auto),
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 60cd9e7..4b6fb66 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2352,6 +2352,12 @@ static void intel_pin_eld_notify(void *audio_ptr, int port)
struct hda_codec *codec = audio_ptr;
int pin_nid = port + 0x04;
+ /* skip notification during system suspend (but not in runtime PM);
+ * the state will be updated at resume
+ */
+ if (snd_power_get_state(codec->card) != SNDRV_CTL_POWER_D0)
+ return;
+
check_presence_and_report(codec, pin_nid);
}
@@ -2378,7 +2384,8 @@ static int patch_generic_hdmi(struct hda_codec *codec)
* can cover the codec power request, and so need not set this flag.
* For previous platforms, there is no such power well feature.
*/
- if (is_valleyview_plus(codec) || is_skylake(codec))
+ if (is_valleyview_plus(codec) || is_skylake(codec) ||
+ is_broxton(codec))
codec->core.link_power_control = 1;
if (is_haswell_plus(codec) || is_valleyview_plus(codec)) {
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 2f7b065..8dd2ac1 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -1759,6 +1759,7 @@ enum {
ALC882_FIXUP_NO_PRIMARY_HP,
ALC887_FIXUP_ASUS_BASS,
ALC887_FIXUP_BASS_CHMAP,
+ ALC882_FIXUP_DISABLE_AAMIX,
};
static void alc889_fixup_coef(struct hda_codec *codec,
@@ -1920,6 +1921,8 @@ static void alc882_fixup_no_primary_hp(struct hda_codec *codec,
static void alc_fixup_bass_chmap(struct hda_codec *codec,
const struct hda_fixup *fix, int action);
+static void alc_fixup_disable_aamix(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action);
static const struct hda_fixup alc882_fixups[] = {
[ALC882_FIXUP_ABIT_AW9D_MAX] = {
@@ -2151,6 +2154,10 @@ static const struct hda_fixup alc882_fixups[] = {
.type = HDA_FIXUP_FUNC,
.v.func = alc_fixup_bass_chmap,
},
+ [ALC882_FIXUP_DISABLE_AAMIX] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_disable_aamix,
+ },
};
static const struct snd_pci_quirk alc882_fixup_tbl[] = {
@@ -2218,6 +2225,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte EP45-DS3/Z87X-UD3H", ALC889_FIXUP_FRONT_HP_NO_PRESENCE),
+ SND_PCI_QUIRK(0x1458, 0xa182, "Gigabyte Z170X-UD3", ALC882_FIXUP_DISABLE_AAMIX),
SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX),
SND_PCI_QUIRK_VENDOR(0x1558, "Clevo laptop", ALC882_FIXUP_EAPD),
SND_PCI_QUIRK(0x161f, 0x2054, "Medion laptop", ALC883_FIXUP_EAPD),
@@ -4196,6 +4204,18 @@ static void alc_fixup_tpt440_dock(struct hda_codec *codec,
}
}
+/* additional fixup for Thinkpad T440s noise problem */
+static void alc_fixup_tpt440(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ struct alc_spec *spec = codec->spec;
+
+ if (action == HDA_FIXUP_ACT_PRE_PROBE) {
+ spec->shutup = alc_no_shutup; /* reduce click noise */
+ spec->gen.mixer_nid = 0; /* reduce background noise */
+ }
+}
+
static void alc_shutup_dell_xps13(struct hda_codec *codec)
{
struct alc_spec *spec = codec->spec;
@@ -4570,6 +4590,7 @@ enum {
ALC255_FIXUP_HEADSET_MODE_NO_HP_MIC,
ALC293_FIXUP_DELL1_MIC_NO_PRESENCE,
ALC292_FIXUP_TPT440_DOCK,
+ ALC292_FIXUP_TPT440,
ALC283_FIXUP_BXBT2807_MIC,
ALC255_FIXUP_DELL_WMI_MIC_MUTE_LED,
ALC282_FIXUP_ASPIRE_V5_PINS,
@@ -4587,6 +4608,8 @@ enum {
ALC292_FIXUP_DISABLE_AAMIX,
ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
ALC275_FIXUP_DELL_XPS,
+ ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE,
+ ALC293_FIXUP_LENOVO_SPK_NOISE,
};
static const struct hda_fixup alc269_fixups[] = {
@@ -5041,6 +5064,12 @@ static const struct hda_fixup alc269_fixups[] = {
.chained = true,
.chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
},
+ [ALC292_FIXUP_TPT440] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_tpt440,
+ .chained = true,
+ .chain_id = ALC292_FIXUP_TPT440_DOCK,
+ },
[ALC283_FIXUP_BXBT2807_MIC] = {
.type = HDA_FIXUP_PINS,
.v.pins = (const struct hda_pintbl[]) {
@@ -5167,6 +5196,23 @@ static const struct hda_fixup alc269_fixups[] = {
{}
}
},
+ [ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE] = {
+ .type = HDA_FIXUP_VERBS,
+ .v.verbs = (const struct hda_verb[]) {
+ /* Disable pass-through path for FRONT 14h */
+ {0x20, AC_VERB_SET_COEF_INDEX, 0x36},
+ {0x20, AC_VERB_SET_PROC_COEF, 0x1737},
+ {}
+ },
+ .chained = true,
+ .chain_id = ALC255_FIXUP_DELL1_MIC_NO_PRESENCE
+ },
+ [ALC293_FIXUP_LENOVO_SPK_NOISE] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc_fixup_disable_aamix,
+ .chained = true,
+ .chain_id = ALC269_FIXUP_THINKPAD_ACPI
+ },
};
static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -5180,8 +5226,10 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x1025, 0x0742, "Acer AO756", ALC271_FIXUP_HP_GATE_MIC_JACK),
SND_PCI_QUIRK(0x1025, 0x0775, "Acer Aspire E1-572", ALC271_FIXUP_HP_GATE_MIC_JACK_E1_572),
SND_PCI_QUIRK(0x1025, 0x079b, "Acer Aspire V5-573G", ALC282_FIXUP_ASPIRE_V5_PINS),
+ SND_PCI_QUIRK(0x1025, 0x106d, "Acer Cloudbook 14", ALC283_FIXUP_CHROME_BOOK),
SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
SND_PCI_QUIRK(0x1028, 0x054b, "Dell XPS one 2710", ALC275_FIXUP_DELL_XPS),
+ SND_PCI_QUIRK(0x1028, 0x05bd, "Dell Latitude E6440", ALC292_FIXUP_DELL_E7X),
SND_PCI_QUIRK(0x1028, 0x05ca, "Dell Latitude E7240", ALC292_FIXUP_DELL_E7X),
SND_PCI_QUIRK(0x1028, 0x05cb, "Dell Latitude E7440", ALC292_FIXUP_DELL_E7X),
SND_PCI_QUIRK(0x1028, 0x05da, "Dell Vostro 5460", ALC290_FIXUP_SUBWOOFER),
@@ -5204,6 +5252,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x1028, 0x06de, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
SND_PCI_QUIRK(0x1028, 0x06df, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
SND_PCI_QUIRK(0x1028, 0x06e0, "Dell", ALC292_FIXUP_DISABLE_AAMIX),
+ SND_PCI_QUIRK(0x1028, 0x0704, "Dell XPS 13", ALC256_FIXUP_DELL_XPS_13_HEADPHONE_NOISE),
SND_PCI_QUIRK(0x1028, 0x164a, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
SND_PCI_QUIRK(0x1028, 0x164b, "Dell", ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_HP_MUTE_LED_MIC2),
@@ -5302,7 +5351,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x21fb, "Thinkpad T430s", ALC269_FIXUP_LENOVO_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2208, "Thinkpad T431s", ALC269_FIXUP_LENOVO_DOCK),
- SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad T440s", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x220c, "Thinkpad T440s", ALC292_FIXUP_TPT440),
SND_PCI_QUIRK(0x17aa, 0x220e, "Thinkpad T440p", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2210, "Thinkpad T540p", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2211, "Thinkpad W541", ALC292_FIXUP_TPT440_DOCK),
@@ -5311,6 +5360,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
SND_PCI_QUIRK(0x17aa, 0x2223, "ThinkPad T550", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
@@ -5320,6 +5370,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x5034, "Thinkpad T450", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x5036, "Thinkpad T450s", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x503c, "Thinkpad L450", ALC292_FIXUP_TPT440_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x504b, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
@@ -5400,6 +5451,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
{.id = ALC283_FIXUP_CHROME_BOOK, .name = "alc283-dac-wcaps"},
{.id = ALC283_FIXUP_SENSE_COMBO_JACK, .name = "alc283-sense-combo"},
{.id = ALC292_FIXUP_TPT440_DOCK, .name = "tpt440-dock"},
+ {.id = ALC292_FIXUP_TPT440, .name = "tpt440"},
{}
};
@@ -6386,6 +6438,7 @@ static const struct hda_fixup alc662_fixups[] = {
static const struct snd_pci_quirk alc662_fixup_tbl[] = {
SND_PCI_QUIRK(0x1019, 0x9087, "ECS", ALC662_FIXUP_ASUS_MODE2),
SND_PCI_QUIRK(0x1025, 0x022f, "Acer Aspire One", ALC662_FIXUP_INV_DMIC),
+ SND_PCI_QUIRK(0x1025, 0x0241, "Packard Bell DOTS", ALC662_FIXUP_INV_DMIC),
SND_PCI_QUIRK(0x1025, 0x0308, "Acer Aspire 8942G", ALC662_FIXUP_ASPIRE),
SND_PCI_QUIRK(0x1025, 0x031c, "Gateway NV79", ALC662_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x1025, 0x0349, "eMachines eM250", ALC662_FIXUP_INV_DMIC),
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 826122d..2c7c5eb 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -3110,6 +3110,29 @@ static void stac92hd71bxx_fixup_hp_hdx(struct hda_codec *codec,
spec->gpio_led = 0x08;
}
+static bool is_hp_output(struct hda_codec *codec, hda_nid_t pin)
+{
+ unsigned int pin_cfg = snd_hda_codec_get_pincfg(codec, pin);
+
+ /* count line-out, too, as BIOS sets often so */
+ return get_defcfg_connect(pin_cfg) != AC_JACK_PORT_NONE &&
+ (get_defcfg_device(pin_cfg) == AC_JACK_LINE_OUT ||
+ get_defcfg_device(pin_cfg) == AC_JACK_HP_OUT);
+}
+
+static void fixup_hp_headphone(struct hda_codec *codec, hda_nid_t pin)
+{
+ unsigned int pin_cfg = snd_hda_codec_get_pincfg(codec, pin);
+
+ /* It was changed in the BIOS to just satisfy MS DTM.
+ * Lets turn it back into slaved HP
+ */
+ pin_cfg = (pin_cfg & (~AC_DEFCFG_DEVICE)) |
+ (AC_JACK_HP_OUT << AC_DEFCFG_DEVICE_SHIFT);
+ pin_cfg = (pin_cfg & (~(AC_DEFCFG_DEF_ASSOC | AC_DEFCFG_SEQUENCE))) |
+ 0x1f;
+ snd_hda_codec_set_pincfg(codec, pin, pin_cfg);
+}
static void stac92hd71bxx_fixup_hp(struct hda_codec *codec,
const struct hda_fixup *fix, int action)
@@ -3119,22 +3142,12 @@ static void stac92hd71bxx_fixup_hp(struct hda_codec *codec,
if (action != HDA_FIXUP_ACT_PRE_PROBE)
return;
- if (hp_blike_system(codec->core.subsystem_id)) {
- unsigned int pin_cfg = snd_hda_codec_get_pincfg(codec, 0x0f);
- if (get_defcfg_device(pin_cfg) == AC_JACK_LINE_OUT ||
- get_defcfg_device(pin_cfg) == AC_JACK_SPEAKER ||
- get_defcfg_device(pin_cfg) == AC_JACK_HP_OUT) {
- /* It was changed in the BIOS to just satisfy MS DTM.
- * Lets turn it back into slaved HP
- */
- pin_cfg = (pin_cfg & (~AC_DEFCFG_DEVICE))
- | (AC_JACK_HP_OUT <<
- AC_DEFCFG_DEVICE_SHIFT);
- pin_cfg = (pin_cfg & (~(AC_DEFCFG_DEF_ASSOC
- | AC_DEFCFG_SEQUENCE)))
- | 0x1f;
- snd_hda_codec_set_pincfg(codec, 0x0f, pin_cfg);
- }
+ /* when both output A and F are assigned, these are supposedly
+ * dock and built-in headphones; fix both pin configs
+ */
+ if (is_hp_output(codec, 0x0a) && is_hp_output(codec, 0x0f)) {
+ fixup_hp_headphone(codec, 0x0a);
+ fixup_hp_headphone(codec, 0x0f);
}
if (find_mute_led_cfg(codec, 1))
generated by cgit v0.10.2 at 2024-09-01 21:23:10 (GMT)