From: Wu Fengguang Date: Fri, 30 Oct 2009 10:45:35 +0000 (+0100) Subject: ALSA: hda - auto parse intelhdmi cvt/pin configurations X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f424367c3a393ca8b9669ceaa5b7f959d83bb14c;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git ALSA: hda - auto parse intelhdmi cvt/pin configurations Signed-off-by: Wu Fengguang Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c index 3c68aa9742d7..1c374f11ed07 100644 --- a/sound/pci/hda/patch_intelhdmi.c +++ b/sound/pci/hda/patch_intelhdmi.c @@ -213,6 +213,10 @@ static struct cea_channel_speaker_allocation channel_allocations[] = { }; +/* + * HDA/HDMI auto parsing + */ + static int hda_node_index(hda_nid_t *nids, hda_nid_t nid) { int i; @@ -225,6 +229,113 @@ static int hda_node_index(hda_nid_t *nids, hda_nid_t nid) return -EINVAL; } +static int intel_hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid) +{ + struct intel_hdmi_spec *spec = codec->spec; + hda_nid_t conn_list[HDA_MAX_CONNECTIONS]; + int conn_len, curr; + int index; + + if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) { + snd_printk(KERN_WARNING + "HDMI: pin %d wcaps %#x " + "does not support connection list\n", + pin_nid, get_wcaps(codec, pin_nid)); + return -EINVAL; + } + + conn_len = snd_hda_get_connections(codec, pin_nid, conn_list, + HDA_MAX_CONNECTIONS); + if (conn_len > 1) + curr = snd_hda_codec_read(codec, pin_nid, 0, + AC_VERB_GET_CONNECT_SEL, 0); + else + curr = 0; + + index = hda_node_index(spec->pin, pin_nid); + if (index < 0) + return -EINVAL; + + spec->pin_cvt[index] = conn_list[curr]; + + return 0; +} + +static int intel_hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid) +{ + struct intel_hdmi_spec *spec = codec->spec; + + if (spec->num_pins >= INTEL_HDMI_PINS) { + snd_printk(KERN_WARNING + "HDMI: no space for pin %d \n", pin_nid); + return -EINVAL; + } + + spec->pin[spec->num_pins] = pin_nid; + spec->num_pins++; + + /* + * It is assumed that converter nodes come first in the node list and + * hence have been registered and usable now. + */ + return intel_hdmi_read_pin_conn(codec, pin_nid); +} + +static int intel_hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid) +{ + struct intel_hdmi_spec *spec = codec->spec; + + if (spec->num_cvts >= INTEL_HDMI_CVTS) { + snd_printk(KERN_WARNING + "HDMI: no space for converter %d \n", nid); + return -EINVAL; + } + + spec->cvt[spec->num_cvts] = nid; + spec->num_cvts++; + + return 0; +} + +static int intel_hdmi_parse_codec(struct hda_codec *codec) +{ + hda_nid_t nid; + int i, nodes; + + nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid); + if (!nid || nodes < 0) { + snd_printk(KERN_WARNING "HDMI: failed to get afg sub nodes\n"); + return -EINVAL; + } + + for (i = 0; i < nodes; i++, nid++) { + unsigned int caps; + unsigned int type; + + caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP); + type = get_wcaps_type(caps); + + if (!(caps & AC_WCAP_DIGITAL)) + continue; + + switch (type) { + case AC_WID_AUD_OUT: + if (intel_hdmi_add_cvt(codec, nid) < 0) + return -EINVAL; + break; + case AC_WID_PIN: + caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP); + if (!(caps & AC_PINCAP_HDMI)) + continue; + if (intel_hdmi_add_pin(codec, nid) < 0) + return -EINVAL; + break; + } + } + + return 0; +} + /* * HDMI routines */ @@ -756,8 +867,15 @@ static int do_patch_intel_hdmi(struct hda_codec *codec, int spec_id) if (spec == NULL) return -ENOMEM; - *spec = static_specs[spec_id]; codec->spec = spec; + if (intel_hdmi_parse_codec(codec) < 0) { + codec->spec = NULL; + kfree(spec); + return -EINVAL; + } + if (memcmp(spec, static_specs + spec_id, sizeof(*spec))) + snd_printk(KERN_WARNING + "HDMI: auto parse disagree with known config\n"); codec->patch_ops = intel_hdmi_patch_ops; for (i = 0; i < spec->num_pins; i++)