From 5d44f927a5467d64c4f1e0d579bcb3f543c275e0 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 24 May 2011 17:11:17 -0600 Subject: ALSA: HDA: Unify HDMI hotplug handling. This change unifies the initial handling of a pin's state with the code to update a pin's state after a hotplug (unsolicited response) event. The initial probing, and all updates, are now routed through hdmi_present_sense. The stored PD and ELDV status is now always derived from GetPinSense verb execution, and not from the data in the unsolicited response. This means: a) The WAR for NVIDIA codec's UR.PD values ("old_pin_detect") can be removed, since this only affected the no-longer-used unsolicited response payload. b) In turn, this means that most NVIDIA codecs can simply use patch_generic_hdmi instead of having a custom variant just to set old_pin_detect. c) When PD && ELDV becomes true, no extra verbs are executed, because the GetPinSense that was previously executed by snd_hdmi_get_eld (really, hdmi_eld_valid) has simply moved into hdmi_present_sense. d) When PD && ELDV becomes false, there is a single extra GetPinSense verb executed for codecs where old_pin_detect wasn't set, i.e. some NVIDIA, and all ATI/AMD and Intel codecs. I doubt this will be a performance issue. The new unified code in hdmi_present_sense also ensures that eld->eld_valid is not set unless eld->monitor_present is also set. This protects against potential invalid combinations of PD and ELDV received from HW, and transitively from a graphics driver. Also, print the derived PD/ELDV bits from hdmi_present_sense so the kernel log always displays the actual state stored, which will differ from the values in the unsolicited response for NVIDIA HW where old_pin_detect was previously set. Finally, a couple of small tweaks originally by Takashi: * Clear the ELD content to zero before reading it, so that if it's not read (i.e. when !(PD && ELDV)) it's in a known state. * Don't show ELD fields in /proc ELD files when the ELD isn't valid. The only possibility I can see for regression here is a codec where the GetPinSense verb returns incorrect data. However, we're already exposed to that, since that data is used (a) from hdmi_add_pin to set up the initial pin state, and (b) within snd_hda_input_jack_report to query a pin's presence value. As such, I don't believe any HW has bugs here. Includes-changes-by: Takashi Iwai Signed-off-by: Stephen Warren Acked-by: Wu Fengguang Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_eld.c | 21 ++------ sound/pci/hda/patch_hdmi.c | 118 +++++++++++++++++++-------------------------- 2 files changed, 52 insertions(+), 87 deletions(-) (limited to 'sound') diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c index 74b0560..b05f7be 100644 --- a/sound/pci/hda/hda_eld.c +++ b/sound/pci/hda/hda_eld.c @@ -312,23 +312,6 @@ out_fail: return -EINVAL; } -static int hdmi_eld_valid(struct hda_codec *codec, hda_nid_t nid) -{ - int eldv; - int present; - - present = snd_hda_pin_sense(codec, nid); - eldv = (present & AC_PINSENSE_ELDV); - present = (present & AC_PINSENSE_PRESENCE); - -#ifdef CONFIG_SND_DEBUG_VERBOSE - printk(KERN_INFO "HDMI: sink_present = %d, eld_valid = %d\n", - !!present, !!eldv); -#endif - - return eldv && present; -} - int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid) { return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, @@ -343,7 +326,7 @@ int snd_hdmi_get_eld(struct hdmi_eld *eld, int size; unsigned char *buf; - if (!hdmi_eld_valid(codec, nid)) + if (!eld->eld_valid) return -ENOENT; size = snd_hdmi_get_eld_size(codec, nid); @@ -477,6 +460,8 @@ static void hdmi_print_eld_info(struct snd_info_entry *entry, snd_iprintf(buffer, "monitor_present\t\t%d\n", e->monitor_present); snd_iprintf(buffer, "eld_valid\t\t%d\n", e->eld_valid); + if (!e->eld_valid) + return; snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name); snd_iprintf(buffer, "connection_type\t\t%s\n", eld_connection_type_names[e->conn_type]); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 3229018..d786ecc 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -78,10 +78,6 @@ struct hdmi_spec { */ struct hda_multi_out multiout; const struct hda_pcm_stream *pcm_playback; - - /* misc flags */ - /* PD bit indicates only the update, not the current state */ - unsigned int old_pin_detect:1; }; @@ -300,13 +296,6 @@ static int hda_node_index(hda_nid_t *nids, hda_nid_t nid) return -EINVAL; } -static void hdmi_get_show_eld(struct hda_codec *codec, hda_nid_t pin_nid, - struct hdmi_eld *eld) -{ - if (!snd_hdmi_get_eld(eld, codec, pin_nid)) - snd_hdmi_show_eld(eld); -} - #ifdef BE_PARANOID static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid, int *packet_index, int *byte_index) @@ -694,35 +683,20 @@ static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid, static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res) { struct hdmi_spec *spec = codec->spec; - int tag = res >> AC_UNSOL_RES_TAG_SHIFT; - int pind = !!(res & AC_UNSOL_RES_PD); + int pin_nid = res >> AC_UNSOL_RES_TAG_SHIFT; + int pd = !!(res & AC_UNSOL_RES_PD); int eldv = !!(res & AC_UNSOL_RES_ELDV); int index; printk(KERN_INFO "HDMI hot plug event: Pin=%d Presence_Detect=%d ELD_Valid=%d\n", - tag, pind, eldv); + pin_nid, pd, eldv); - index = hda_node_index(spec->pin, tag); + index = hda_node_index(spec->pin, pin_nid); if (index < 0) return; - if (spec->old_pin_detect) { - if (pind) - hdmi_present_sense(codec, tag, &spec->sink_eld[index]); - pind = spec->sink_eld[index].monitor_present; - } - - spec->sink_eld[index].monitor_present = pind; - spec->sink_eld[index].eld_valid = eldv; - - if (pind && eldv) { - hdmi_get_show_eld(codec, spec->pin[index], - &spec->sink_eld[index]); - /* TODO: do real things about ELD */ - } - - snd_hda_input_jack_report(codec, tag); + hdmi_present_sense(codec, pin_nid, &spec->sink_eld[index]); } static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res) @@ -903,13 +877,33 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid) static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid, struct hdmi_eld *eld) { + /* + * Always execute a GetPinSense verb here, even when called from + * hdmi_intrinsic_event; for some NVIDIA HW, the unsolicited + * response's PD bit is not the real PD value, but indicates that + * the real PD value changed. An older version of the HD-audio + * specification worked this way. Hence, we just ignore the data in + * the unsolicited response to avoid custom WARs. + */ int present = snd_hda_pin_sense(codec, pin_nid); + memset(eld, 0, sizeof(*eld)); + eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE); - eld->eld_valid = !!(present & AC_PINSENSE_ELDV); + if (eld->monitor_present) + eld->eld_valid = !!(present & AC_PINSENSE_ELDV); + else + eld->eld_valid = 0; - if (present & AC_PINSENSE_ELDV) - hdmi_get_show_eld(codec, pin_nid, eld); + printk(KERN_INFO + "HDMI status: Pin=%d Presence_Detect=%d ELD_Valid=%d\n", + pin_nid, eld->monitor_present, eld->eld_valid); + + if (eld->eld_valid) + if (!snd_hdmi_get_eld(eld, codec, pin_nid)) + snd_hdmi_show_eld(eld); + + snd_hda_input_jack_report(codec, pin_nid); } static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid) @@ -927,7 +921,6 @@ static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid) SND_JACK_VIDEOOUT, NULL); if (err < 0) return err; - snd_hda_input_jack_report(codec, pin_nid); hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]); @@ -1490,18 +1483,6 @@ static const struct hda_codec_ops nvhdmi_patch_ops_2ch = { .free = generic_hdmi_free, }; -static int patch_nvhdmi_8ch_89(struct hda_codec *codec) -{ - struct hdmi_spec *spec; - int err = patch_generic_hdmi(codec); - - if (err < 0) - return err; - spec = codec->spec; - spec->old_pin_detect = 1; - return 0; -} - static int patch_nvhdmi_2ch(struct hda_codec *codec) { struct hdmi_spec *spec; @@ -1515,7 +1496,6 @@ static int patch_nvhdmi_2ch(struct hda_codec *codec) spec->multiout.num_dacs = 0; /* no analog */ spec->multiout.max_channels = 2; spec->multiout.dig_out_nid = nvhdmi_master_con_nid_7x; - spec->old_pin_detect = 1; spec->num_cvts = 1; spec->cvt[0] = nvhdmi_master_con_nid_7x; spec->pcm_playback = &nvhdmi_pcm_playback_2ch; @@ -1658,28 +1638,28 @@ static const struct hda_codec_preset snd_hda_preset_hdmi[] = { { .id = 0x10de0005, .name = "MCP77/78 HDMI", .patch = patch_nvhdmi_8ch_7x }, { .id = 0x10de0006, .name = "MCP77/78 HDMI", .patch = patch_nvhdmi_8ch_7x }, { .id = 0x10de0007, .name = "MCP79/7A HDMI", .patch = patch_nvhdmi_8ch_7x }, -{ .id = 0x10de000a, .name = "GPU 0a HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de000b, .name = "GPU 0b HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de000c, .name = "MCP89 HDMI", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de000d, .name = "GPU 0d HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0010, .name = "GPU 10 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0011, .name = "GPU 11 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0012, .name = "GPU 12 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0013, .name = "GPU 13 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0014, .name = "GPU 14 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0015, .name = "GPU 15 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0016, .name = "GPU 16 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, +{ .id = 0x10de000a, .name = "GPU 0a HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de000b, .name = "GPU 0b HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de000c, .name = "MCP89 HDMI", .patch = patch_generic_hdmi }, +{ .id = 0x10de000d, .name = "GPU 0d HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0010, .name = "GPU 10 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0011, .name = "GPU 11 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0012, .name = "GPU 12 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0013, .name = "GPU 13 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0014, .name = "GPU 14 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0015, .name = "GPU 15 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0016, .name = "GPU 16 HDMI/DP", .patch = patch_generic_hdmi }, /* 17 is known to be absent */ -{ .id = 0x10de0018, .name = "GPU 18 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0019, .name = "GPU 19 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de001a, .name = "GPU 1a HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de001b, .name = "GPU 1b HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de001c, .name = "GPU 1c HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0040, .name = "GPU 40 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0041, .name = "GPU 41 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0042, .name = "GPU 42 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0043, .name = "GPU 43 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, -{ .id = 0x10de0044, .name = "GPU 44 HDMI/DP", .patch = patch_nvhdmi_8ch_89 }, +{ .id = 0x10de0018, .name = "GPU 18 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0019, .name = "GPU 19 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de001a, .name = "GPU 1a HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de001b, .name = "GPU 1b HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de001c, .name = "GPU 1c HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0040, .name = "GPU 40 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0041, .name = "GPU 41 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0042, .name = "GPU 42 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0043, .name = "GPU 43 HDMI/DP", .patch = patch_generic_hdmi }, +{ .id = 0x10de0044, .name = "GPU 44 HDMI/DP", .patch = patch_generic_hdmi }, { .id = 0x10de0067, .name = "MCP67 HDMI", .patch = patch_nvhdmi_2ch }, { .id = 0x10de8001, .name = "MCP73 HDMI", .patch = patch_nvhdmi_2ch }, { .id = 0x80860054, .name = "IbexPeak HDMI", .patch = patch_generic_hdmi }, -- cgit v1.1