This patch adds DP-MST support for GK104+ NVIDIA codecs.
GK104+ NVIDIA codecs support DP-MST audio. These codecs have 4 output converters and 4 pin widgets, with 4 device entries per pin widget for a total of 16 device entries.
This patch moves the existing patch_nvhdmi() definition to patch_nvhdmi_legacy(), used by pre-GK104 NVIDIA codecs. Redefine patch_nvhdmi() to enable DP-MST support by setting codec->dp_mst and spec->dyn_pcm_assign.
Introduce NVIDIA-specific logic for dynamic pcm assignment, making sure that new pcm assignments are compatible with the legacy static per_pin-pmc assignment that existed in the days before DP-MST.
Signed-off-by: Nikhil Mahale nmahale@nvidia.com Reviewed-by: Aaron Plattner aplattner@nvidia.com --- sound/pci/hda/patch_hdmi.c | 119 +++++++++++++++++++++++++++++++++++++-------- 1 file changed, 100 insertions(+), 19 deletions(-)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index fe58e711d259..326c68d8eb60 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -33,6 +33,8 @@ #include "hda_local.h" #include "hda_jack.h"
+struct hdmi_spec; + static bool static_hdmi_pcm; module_param(static_hdmi_pcm, bool, 0644); MODULE_PARM_DESC(static_hdmi_pcm, "Don't restrict PCM parameters per ELD info"); @@ -114,6 +116,9 @@ struct hdmi_ops { void (*pin_cvt_fixup)(struct hda_codec *codec, struct hdmi_spec_per_pin *per_pin, hda_nid_t cvt_nid); + int (*find_pcm_slot)(struct hdmi_spec *spec, + struct hdmi_spec_per_pin *per_pin); + };
struct hdmi_pcm { @@ -1353,7 +1358,7 @@ static void hdmi_attach_hda_pcm(struct hdmi_spec *spec, /* pcm already be attached to the pin */ if (per_pin->pcm) return; - idx = hdmi_find_pcm_slot(spec, per_pin); + idx = spec->ops.find_pcm_slot(spec, per_pin); if (idx == -EBUSY) return; per_pin->pcm_idx = idx; @@ -2386,6 +2391,7 @@ static const struct hdmi_ops generic_standard_hdmi_ops = { .pin_setup_infoframe = hdmi_pin_setup_infoframe, .pin_hbr_setup = hdmi_pin_hbr_setup, .setup_stream = hdmi_setup_stream, + .find_pcm_slot = hdmi_find_pcm_slot, };
/* allocate codec->spec and assign/initialize generic parser ops */ @@ -3494,11 +3500,86 @@ static const struct drm_audio_component_audio_ops nvhdmi_audio_ops = { .master_unbind = generic_acomp_master_unbind, };
+static int nvhdmi_find_pcm_slot(struct hdmi_spec *spec, + struct hdmi_spec_per_pin *per_pin) +{ + int i; + + /* + * generic_hdmi_build_pcms() allocates (num_nids + dev_num - 1) + * number of pcms. + * + * The per_pin of pin_nid_idx=n and dev_id=m prefers to get pcm-n if m==0. + * This guarantees that dynamic pcm assignments are compatible with the + * legacy static per_pin-pmc assignment that existed in the days before + * DP-MST. + * + * per_pin of m!=0 prefers to get pcm=(num_nids + (m - 1)). + */ + if (per_pin->dev_id == 0 && + !test_bit(per_pin->pin_nid_idx, &spec->pcm_bitmap)) + return per_pin->pin_nid_idx; + + if (per_pin->dev_id != 0 && + !(test_bit(spec->num_nids + (per_pin->dev_id - 1), + &spec->pcm_bitmap))) { + return spec->num_nids + (per_pin->dev_id - 1); + } + + /* have a second try; check the area over num_nids */ + for (i = spec->num_nids; i < spec->pcm_used; i++) { + if (!test_bit(i, &spec->pcm_bitmap)) + return i; + } + + /* the last try; check the empty slots in pins */ + for (i = 0; i < spec->num_nids; i++) { + if (!test_bit(i, &spec->pcm_bitmap)) + return i; + } + return -EBUSY; +} + static int patch_nvhdmi(struct hda_codec *codec) { struct hdmi_spec *spec; int err;
+ err = alloc_generic_hdmi(codec); + if (err < 0) + return err; + codec->dp_mst = true; + + spec = codec->spec; + spec->dyn_pcm_assign = true; + spec->ops.find_pcm_slot = nvhdmi_find_pcm_slot; + + err = hdmi_parse_codec(codec); + if (err < 0) { + generic_spec_free(codec); + return err; + } + + generic_hdmi_init_per_pins(codec); + + spec->dyn_pin_out = true; + + spec->chmap.ops.chmap_cea_alloc_validate_get_type = + nvhdmi_chmap_cea_alloc_validate_get_type; + spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate; + + codec->link_down_at_suspend = 1; + + generic_acomp_init(codec, &nvhdmi_audio_ops, nvhdmi_port2pin); + + return 0; +} + +static int patch_nvhdmi_legacy(struct hda_codec *codec) +{ + struct hdmi_spec *spec; + int err; + err = patch_generic_hdmi(codec); if (err) return err; @@ -4107,25 +4188,25 @@ HDA_CODEC_ENTRY(0x10de0004, "GPU 04 HDMI", patch_nvhdmi_8ch_7x), HDA_CODEC_ENTRY(0x10de0005, "MCP77/78 HDMI", patch_nvhdmi_8ch_7x), HDA_CODEC_ENTRY(0x10de0006, "MCP77/78 HDMI", patch_nvhdmi_8ch_7x), HDA_CODEC_ENTRY(0x10de0007, "MCP79/7A HDMI", patch_nvhdmi_8ch_7x), -HDA_CODEC_ENTRY(0x10de0008, "GPU 08 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0009, "GPU 09 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de000a, "GPU 0a HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de000b, "GPU 0b HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de000c, "MCP89 HDMI", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de000d, "GPU 0d HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0010, "GPU 10 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0011, "GPU 11 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0012, "GPU 12 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0013, "GPU 13 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0014, "GPU 14 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0015, "GPU 15 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0016, "GPU 16 HDMI/DP", patch_nvhdmi), +HDA_CODEC_ENTRY(0x10de0008, "GPU 08 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0009, "GPU 09 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de000a, "GPU 0a HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de000b, "GPU 0b HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de000c, "MCP89 HDMI", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de000d, "GPU 0d HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0010, "GPU 10 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0011, "GPU 11 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0012, "GPU 12 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0013, "GPU 13 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0014, "GPU 14 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0015, "GPU 15 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0016, "GPU 16 HDMI/DP", patch_nvhdmi_legacy), /* 17 is known to be absent */ -HDA_CODEC_ENTRY(0x10de0018, "GPU 18 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de0019, "GPU 19 HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de001a, "GPU 1a HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de001b, "GPU 1b HDMI/DP", patch_nvhdmi), -HDA_CODEC_ENTRY(0x10de001c, "GPU 1c HDMI/DP", patch_nvhdmi), +HDA_CODEC_ENTRY(0x10de0018, "GPU 18 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de0019, "GPU 19 HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de001a, "GPU 1a HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de001b, "GPU 1b HDMI/DP", patch_nvhdmi_legacy), +HDA_CODEC_ENTRY(0x10de001c, "GPU 1c HDMI/DP", patch_nvhdmi_legacy), HDA_CODEC_ENTRY(0x10de0020, "Tegra30 HDMI", patch_tegra_hdmi), HDA_CODEC_ENTRY(0x10de0022, "Tegra114 HDMI", patch_tegra_hdmi), HDA_CODEC_ENTRY(0x10de0028, "Tegra124 HDMI", patch_tegra_hdmi),