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Received: from DM6PR12MB4435.namprd12.prod.outlook.com (2603:10b6:5:2a6::23) by SJ0PR12MB6880.namprd12.prod.outlook.com (2603:10b6:a03:485::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5588.16; Tue, 13 Sep 2022 07:19:04 +0000 Received: from DM6PR12MB4435.namprd12.prod.outlook.com ([fe80::3dd3:e494:c723:e0cc]) by DM6PR12MB4435.namprd12.prod.outlook.com ([fe80::3dd3:e494:c723:e0cc%4]) with mapi id 15.20.5612.022; Tue, 13 Sep 2022 07:19:04 +0000 Message-ID: <5f7d294a-5040-a7a7-cee2-d62cfef5b48e@nvidia.com> Date: Tue, 13 Sep 2022 12:48:52 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: [v2] ALSA: hda: Fix Nvidia dp infoframe Content-Language: en-US To: Takashi Iwai Cc: tiwai@suse.com, perex@perex.cz, thierry.reding@gmail.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org References: <20220913065818.13015-1-mkumard@nvidia.com> <874jxbhhin.wl-tiwai@suse.de> From: Mohan Kumar D In-Reply-To: <874jxbhhin.wl-tiwai@suse.de> Content-Type: text/plain; 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As >> dp infoframe structure has 4th byte as valid infoframe data, use >> hdmi infoframe structure for nvidia dp infoframe to match HW behvaior. >> >> Signed-off-by: Mohan Kumar > Aha, so this affects on all Nvidia devices, not only on Tegra, but > also on PC? Then we should put cc-to-stable definitely. Yes, The HDA HW design was common for dGPU and Tegra. > > (No need to resend, I can put it locally.) Thanks!. > > > Takashi > >> --- >> sound/pci/hda/patch_hdmi.c | 23 +++++++++++++++++++---- >> 1 file changed, 19 insertions(+), 4 deletions(-) >> >> diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c >> index 6c209cd26c0c..9127dd1b1a9c 100644 >> --- a/sound/pci/hda/patch_hdmi.c >> +++ b/sound/pci/hda/patch_hdmi.c >> @@ -170,6 +170,8 @@ struct hdmi_spec { >> bool dyn_pcm_no_legacy; >> /* hdmi interrupt trigger control flag for Nvidia codec */ >> bool hdmi_intr_trig_ctrl; >> + bool nv_dp_workaround; /* workaround DP audio infoframe for Nvidia */ >> + >> bool intel_hsw_fixup; /* apply Intel platform-specific fixups */ >> /* >> * Non-generic VIA/NVIDIA specific >> @@ -679,15 +681,24 @@ static void hdmi_pin_setup_infoframe(struct hda_codec *codec, >> int ca, int active_channels, >> int conn_type) >> { >> + struct hdmi_spec *spec = codec->spec; >> union audio_infoframe ai; >> >> memset(&ai, 0, sizeof(ai)); >> - if (conn_type == 0) { /* HDMI */ >> + if ((conn_type == 0) || /* HDMI */ >> + /* Nvidia DisplayPort: Nvidia HW expects same layout as HDMI */ >> + (conn_type == 1 && spec->nv_dp_workaround)) { >> struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi; >> >> - hdmi_ai->type = 0x84; >> - hdmi_ai->ver = 0x01; >> - hdmi_ai->len = 0x0a; >> + if (conn_type == 0) { /* HDMI */ >> + hdmi_ai->type = 0x84; >> + hdmi_ai->ver = 0x01; >> + hdmi_ai->len = 0x0a; >> + } else {/* Nvidia DP */ >> + hdmi_ai->type = 0x84; >> + hdmi_ai->ver = 0x1b; >> + hdmi_ai->len = 0x11 << 2; >> + } >> hdmi_ai->CC02_CT47 = active_channels - 1; >> hdmi_ai->CA = ca; >> hdmi_checksum_audio_infoframe(hdmi_ai); >> @@ -3617,6 +3628,7 @@ static int patch_nvhdmi_2ch(struct hda_codec *codec) >> spec->pcm_playback.rates = SUPPORTED_RATES; >> spec->pcm_playback.maxbps = SUPPORTED_MAXBPS; >> spec->pcm_playback.formats = SUPPORTED_FORMATS; >> + spec->nv_dp_workaround = true; >> return 0; >> } >> >> @@ -3756,6 +3768,7 @@ static int patch_nvhdmi(struct hda_codec *codec) >> spec->chmap.ops.chmap_cea_alloc_validate_get_type = >> nvhdmi_chmap_cea_alloc_validate_get_type; >> spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate; >> + spec->nv_dp_workaround = true; >> >> codec->link_down_at_suspend = 1; >> >> @@ -3779,6 +3792,7 @@ static int patch_nvhdmi_legacy(struct hda_codec *codec) >> spec->chmap.ops.chmap_cea_alloc_validate_get_type = >> nvhdmi_chmap_cea_alloc_validate_get_type; >> spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate; >> + spec->nv_dp_workaround = true; >> >> codec->link_down_at_suspend = 1; >> >> @@ -3992,6 +4006,7 @@ static int tegra_hdmi_init(struct hda_codec *codec) >> spec->chmap.ops.chmap_cea_alloc_validate_get_type = >> nvhdmi_chmap_cea_alloc_validate_get_type; >> spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate; >> + spec->nv_dp_workaround = true; >> >> return 0; >> } >> -- >> 2.17.1 >>