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-rw-r--r--sound/pci/hda/patch_hdmi.c845
1 files changed, 845 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
new file mode 100644
index 00000000000..b2ab39670dd
--- /dev/null
+++ b/sound/pci/hda/patch_hdmi.c
@@ -0,0 +1,845 @@
+/*
+ *
+ * patch_hdmi.c - routines for HDMI/DisplayPort codecs
+ *
+ * Copyright(c) 2008-2010 Intel Corporation. All rights reserved.
+ *
+ * Authors:
+ * Wu Fengguang <wfg@linux.intel.com>
+ *
+ * Maintained by:
+ * Wu Fengguang <wfg@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+
+struct hdmi_spec {
+ int num_cvts;
+ int num_pins;
+ hda_nid_t cvt[MAX_HDMI_CVTS+1]; /* audio sources */
+ hda_nid_t pin[MAX_HDMI_PINS+1]; /* audio sinks */
+
+ /*
+ * source connection for each pin
+ */
+ hda_nid_t pin_cvt[MAX_HDMI_PINS+1];
+
+ /*
+ * HDMI sink attached to each pin
+ */
+ struct hdmi_eld sink_eld[MAX_HDMI_PINS];
+
+ /*
+ * export one pcm per pipe
+ */
+ struct hda_pcm pcm_rec[MAX_HDMI_CVTS];
+
+ /*
+ * nvhdmi specific
+ */
+ struct hda_multi_out multiout;
+ unsigned int codec_type;
+};
+
+
+struct hdmi_audio_infoframe {
+ u8 type; /* 0x84 */
+ u8 ver; /* 0x01 */
+ u8 len; /* 0x0a */
+
+ u8 checksum; /* PB0 */
+ u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
+ u8 SS01_SF24;
+ u8 CXT04;
+ u8 CA;
+ u8 LFEPBL01_LSV36_DM_INH7;
+ u8 reserved[5]; /* PB6 - PB10 */
+};
+
+/*
+ * CEA speaker placement:
+ *
+ * FLH FCH FRH
+ * FLW FL FLC FC FRC FR FRW
+ *
+ * LFE
+ * TC
+ *
+ * RL RLC RC RRC RR
+ *
+ * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
+ * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
+ */
+enum cea_speaker_placement {
+ FL = (1 << 0), /* Front Left */
+ FC = (1 << 1), /* Front Center */
+ FR = (1 << 2), /* Front Right */
+ FLC = (1 << 3), /* Front Left Center */
+ FRC = (1 << 4), /* Front Right Center */
+ RL = (1 << 5), /* Rear Left */
+ RC = (1 << 6), /* Rear Center */
+ RR = (1 << 7), /* Rear Right */
+ RLC = (1 << 8), /* Rear Left Center */
+ RRC = (1 << 9), /* Rear Right Center */
+ LFE = (1 << 10), /* Low Frequency Effect */
+ FLW = (1 << 11), /* Front Left Wide */
+ FRW = (1 << 12), /* Front Right Wide */
+ FLH = (1 << 13), /* Front Left High */
+ FCH = (1 << 14), /* Front Center High */
+ FRH = (1 << 15), /* Front Right High */
+ TC = (1 << 16), /* Top Center */
+};
+
+/*
+ * ELD SA bits in the CEA Speaker Allocation data block
+ */
+static int eld_speaker_allocation_bits[] = {
+ [0] = FL | FR,
+ [1] = LFE,
+ [2] = FC,
+ [3] = RL | RR,
+ [4] = RC,
+ [5] = FLC | FRC,
+ [6] = RLC | RRC,
+ /* the following are not defined in ELD yet */
+ [7] = FLW | FRW,
+ [8] = FLH | FRH,
+ [9] = TC,
+ [10] = FCH,
+};
+
+struct cea_channel_speaker_allocation {
+ int ca_index;
+ int speakers[8];
+
+ /* derived values, just for convenience */
+ int channels;
+ int spk_mask;
+};
+
+/*
+ * ALSA sequence is:
+ *
+ * surround40 surround41 surround50 surround51 surround71
+ * ch0 front left = = = =
+ * ch1 front right = = = =
+ * ch2 rear left = = = =
+ * ch3 rear right = = = =
+ * ch4 LFE center center center
+ * ch5 LFE LFE
+ * ch6 side left
+ * ch7 side right
+ *
+ * surround71 = {FL, FR, RLC, RRC, FC, LFE, RL, RR}
+ */
+static int hdmi_channel_mapping[0x32][8] = {
+ /* stereo */
+ [0x00] = { 0x00, 0x11, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
+ /* 2.1 */
+ [0x01] = { 0x00, 0x11, 0x22, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
+ /* Dolby Surround */
+ [0x02] = { 0x00, 0x11, 0x23, 0xf2, 0xf4, 0xf5, 0xf6, 0xf7 },
+ /* surround40 */
+ [0x08] = { 0x00, 0x11, 0x24, 0x35, 0xf3, 0xf2, 0xf6, 0xf7 },
+ /* 4ch */
+ [0x03] = { 0x00, 0x11, 0x23, 0x32, 0x44, 0xf5, 0xf6, 0xf7 },
+ /* surround41 */
+ [0x09] = { 0x00, 0x11, 0x24, 0x34, 0x43, 0xf2, 0xf6, 0xf7 },
+ /* surround50 */
+ [0x0a] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0xf2, 0xf6, 0xf7 },
+ /* surround51 */
+ [0x0b] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0x52, 0xf6, 0xf7 },
+ /* 7.1 */
+ [0x13] = { 0x00, 0x11, 0x26, 0x37, 0x43, 0x52, 0x64, 0x75 },
+};
+
+/*
+ * This is an ordered list!
+ *
+ * The preceding ones have better chances to be selected by
+ * hdmi_setup_channel_allocation().
+ */
+static struct cea_channel_speaker_allocation channel_allocations[] = {
+/* channel: 7 6 5 4 3 2 1 0 */
+{ .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
+ /* 2.1 */
+{ .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
+ /* Dolby Surround */
+{ .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
+ /* surround40 */
+{ .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
+ /* surround41 */
+{ .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
+ /* surround50 */
+{ .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
+ /* surround51 */
+{ .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
+ /* 6.1 */
+{ .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
+ /* surround71 */
+{ .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
+
+{ .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
+{ .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
+{ .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
+{ .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
+{ .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
+{ .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
+{ .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
+{ .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
+{ .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
+{ .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
+{ .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
+{ .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
+{ .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
+{ .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
+{ .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
+{ .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
+{ .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
+{ .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
+{ .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
+{ .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x20, .speakers = { 0, FCH, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x21, .speakers = { 0, FCH, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x22, .speakers = { TC, 0, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x23, .speakers = { TC, 0, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x24, .speakers = { FRH, FLH, RR, RL, 0, 0, FR, FL } },
+{ .ca_index = 0x25, .speakers = { FRH, FLH, RR, RL, 0, LFE, FR, FL } },
+{ .ca_index = 0x26, .speakers = { FRW, FLW, RR, RL, 0, 0, FR, FL } },
+{ .ca_index = 0x27, .speakers = { FRW, FLW, RR, RL, 0, LFE, FR, FL } },
+{ .ca_index = 0x28, .speakers = { TC, RC, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x29, .speakers = { TC, RC, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x2a, .speakers = { FCH, RC, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x2b, .speakers = { FCH, RC, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x2c, .speakers = { TC, FCH, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x2d, .speakers = { TC, FCH, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x2e, .speakers = { FRH, FLH, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x2f, .speakers = { FRH, FLH, RR, RL, FC, LFE, FR, FL } },
+{ .ca_index = 0x30, .speakers = { FRW, FLW, RR, RL, FC, 0, FR, FL } },
+{ .ca_index = 0x31, .speakers = { FRW, FLW, RR, RL, FC, LFE, FR, FL } },
+};
+
+
+/*
+ * HDMI routines
+ */
+
+static int hda_node_index(hda_nid_t *nids, hda_nid_t nid)
+{
+ int i;
+
+ for (i = 0; nids[i]; i++)
+ if (nids[i] == nid)
+ return i;
+
+ snd_printk(KERN_WARNING "HDMI: nid %d not registered\n", 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)
+{
+ int val;
+
+ val = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_HDMI_DIP_INDEX, 0);
+
+ *packet_index = val >> 5;
+ *byte_index = val & 0x1f;
+}
+#endif
+
+static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
+ int packet_index, int byte_index)
+{
+ int val;
+
+ val = (packet_index << 5) | (byte_index & 0x1f);
+
+ snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
+}
+
+static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
+ unsigned char val)
+{
+ snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
+}
+
+static void hdmi_enable_output(struct hda_codec *codec, hda_nid_t pin_nid)
+{
+ /* Unmute */
+ if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
+ snd_hda_codec_write(codec, pin_nid, 0,
+ AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
+ /* Enable pin out */
+ snd_hda_codec_write(codec, pin_nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
+}
+
+static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t nid)
+{
+ return 1 + snd_hda_codec_read(codec, nid, 0,
+ AC_VERB_GET_CVT_CHAN_COUNT, 0);
+}
+
+static void hdmi_set_channel_count(struct hda_codec *codec,
+ hda_nid_t nid, int chs)
+{
+ if (chs != hdmi_get_channel_count(codec, nid))
+ snd_hda_codec_write(codec, nid, 0,
+ AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
+}
+
+
+/*
+ * Channel mapping routines
+ */
+
+/*
+ * Compute derived values in channel_allocations[].
+ */
+static void init_channel_allocations(void)
+{
+ int i, j;
+ struct cea_channel_speaker_allocation *p;
+
+ for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
+ p = channel_allocations + i;
+ p->channels = 0;
+ p->spk_mask = 0;
+ for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
+ if (p->speakers[j]) {
+ p->channels++;
+ p->spk_mask |= p->speakers[j];
+ }
+ }
+}
+
+/*
+ * The transformation takes two steps:
+ *
+ * eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
+ * spk_mask => (channel_allocations[]) => ai->CA
+ *
+ * TODO: it could select the wrong CA from multiple candidates.
+*/
+static int hdmi_setup_channel_allocation(struct hda_codec *codec, hda_nid_t nid,
+ struct hdmi_audio_infoframe *ai)
+{
+ struct hdmi_spec *spec = codec->spec;
+ struct hdmi_eld *eld;
+ int i;
+ int spk_mask = 0;
+ int channels = 1 + (ai->CC02_CT47 & 0x7);
+ char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
+
+ /*
+ * CA defaults to 0 for basic stereo audio
+ */
+ if (channels <= 2)
+ return 0;
+
+ i = hda_node_index(spec->pin_cvt, nid);
+ if (i < 0)
+ return 0;
+ eld = &spec->sink_eld[i];
+
+ /*
+ * HDMI sink's ELD info cannot always be retrieved for now, e.g.
+ * in console or for audio devices. Assume the highest speakers
+ * configuration, to _not_ prohibit multi-channel audio playback.
+ */
+ if (!eld->spk_alloc)
+ eld->spk_alloc = 0xffff;
+
+ /*
+ * expand ELD's speaker allocation mask
+ *
+ * ELD tells the speaker mask in a compact(paired) form,
+ * expand ELD's notions to match the ones used by Audio InfoFrame.
+ */
+ for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
+ if (eld->spk_alloc & (1 << i))
+ spk_mask |= eld_speaker_allocation_bits[i];
+ }
+
+ /* search for the first working match in the CA table */
+ for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
+ if (channels == channel_allocations[i].channels &&
+ (spk_mask & channel_allocations[i].spk_mask) ==
+ channel_allocations[i].spk_mask) {
+ ai->CA = channel_allocations[i].ca_index;
+ break;
+ }
+ }
+
+ snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
+ snd_printdd(KERN_INFO
+ "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
+ ai->CA, channels, buf);
+
+ return ai->CA;
+}
+
+static void hdmi_debug_channel_mapping(struct hda_codec *codec,
+ hda_nid_t pin_nid)
+{
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+ int i;
+ int slot;
+
+ for (i = 0; i < 8; i++) {
+ slot = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_HDMI_CHAN_SLOT, i);
+ printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
+ slot >> 4, slot & 0xf);
+ }
+#endif
+}
+
+
+static void hdmi_setup_channel_mapping(struct hda_codec *codec,
+ hda_nid_t pin_nid,
+ struct hdmi_audio_infoframe *ai)
+{
+ int i;
+ int ca = ai->CA;
+ int err;
+
+ if (hdmi_channel_mapping[ca][1] == 0) {
+ for (i = 0; i < channel_allocations[ca].channels; i++)
+ hdmi_channel_mapping[ca][i] = i | (i << 4);
+ for (; i < 8; i++)
+ hdmi_channel_mapping[ca][i] = 0xf | (i << 4);
+ }
+
+ for (i = 0; i < 8; i++) {
+ err = snd_hda_codec_write(codec, pin_nid, 0,
+ AC_VERB_SET_HDMI_CHAN_SLOT,
+ hdmi_channel_mapping[ca][i]);
+ if (err) {
+ snd_printdd(KERN_INFO "HDMI: channel mapping failed\n");
+ break;
+ }
+ }
+
+ hdmi_debug_channel_mapping(codec, pin_nid);
+}
+
+
+/*
+ * Audio InfoFrame routines
+ */
+
+/*
+ * Enable Audio InfoFrame Transmission
+ */
+static void hdmi_start_infoframe_trans(struct hda_codec *codec,
+ hda_nid_t pin_nid)
+{
+ hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
+ snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
+ AC_DIPXMIT_BEST);
+}
+
+/*
+ * Disable Audio InfoFrame Transmission
+ */
+static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
+ hda_nid_t pin_nid)
+{
+ hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
+ snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
+ AC_DIPXMIT_DISABLE);
+}
+
+static void hdmi_debug_dip_size(struct hda_codec *codec, hda_nid_t pin_nid)
+{
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+ int i;
+ int size;
+
+ size = snd_hdmi_get_eld_size(codec, pin_nid);
+ printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
+
+ for (i = 0; i < 8; i++) {
+ size = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_HDMI_DIP_SIZE, i);
+ printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
+ }
+#endif
+}
+
+static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid)
+{
+#ifdef BE_PARANOID
+ int i, j;
+ int size;
+ int pi, bi;
+ for (i = 0; i < 8; i++) {
+ size = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_HDMI_DIP_SIZE, i);
+ if (size == 0)
+ continue;
+
+ hdmi_set_dip_index(codec, pin_nid, i, 0x0);
+ for (j = 1; j < 1000; j++) {
+ hdmi_write_dip_byte(codec, pin_nid, 0x0);
+ hdmi_get_dip_index(codec, pin_nid, &pi, &bi);
+ if (pi != i)
+ snd_printd(KERN_INFO "dip index %d: %d != %d\n",
+ bi, pi, i);
+ if (bi == 0) /* byte index wrapped around */
+ break;
+ }
+ snd_printd(KERN_INFO
+ "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
+ i, size, j);
+ }
+#endif
+}
+
+static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *ai)
+{
+ u8 *bytes = (u8 *)ai;
+ u8 sum = 0;
+ int i;
+
+ ai->checksum = 0;
+
+ for (i = 0; i < sizeof(*ai); i++)
+ sum += bytes[i];
+
+ ai->checksum = -sum;
+}
+
+static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
+ hda_nid_t pin_nid,
+ struct hdmi_audio_infoframe *ai)
+{
+ u8 *bytes = (u8 *)ai;
+ int i;
+
+ hdmi_debug_dip_size(codec, pin_nid);
+ hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */
+
+ hdmi_checksum_audio_infoframe(ai);
+
+ hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
+ for (i = 0; i < sizeof(*ai); i++)
+ hdmi_write_dip_byte(codec, pin_nid, bytes[i]);
+}
+
+static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
+ struct hdmi_audio_infoframe *ai)
+{
+ u8 *bytes = (u8 *)ai;
+ u8 val;
+ int i;
+
+ if (snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_HDMI_DIP_XMIT, 0)
+ != AC_DIPXMIT_BEST)
+ return false;
+
+ hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
+ for (i = 0; i < sizeof(*ai); i++) {
+ val = snd_hda_codec_read(codec, pin_nid, 0,
+ AC_VERB_GET_HDMI_DIP_DATA, 0);
+ if (val != bytes[i])
+ return false;
+ }
+
+ return true;
+}
+
+static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid,
+ struct snd_pcm_substream *substream)
+{
+ struct hdmi_spec *spec = codec->spec;
+ hda_nid_t pin_nid;
+ int i;
+ struct hdmi_audio_infoframe ai = {
+ .type = 0x84,
+ .ver = 0x01,
+ .len = 0x0a,
+ .CC02_CT47 = substream->runtime->channels - 1,
+ };
+
+ hdmi_setup_channel_allocation(codec, nid, &ai);
+
+ for (i = 0; i < spec->num_pins; i++) {
+ if (spec->pin_cvt[i] != nid)
+ continue;
+ if (!spec->sink_eld[i].monitor_present)
+ continue;
+
+ pin_nid = spec->pin[i];
+ if (!hdmi_infoframe_uptodate(codec, pin_nid, &ai)) {
+ hdmi_setup_channel_mapping(codec, pin_nid, &ai);
+ hdmi_stop_infoframe_trans(codec, pin_nid);
+ hdmi_fill_audio_infoframe(codec, pin_nid, &ai);
+ hdmi_start_infoframe_trans(codec, pin_nid);
+ }
+ }
+}
+
+
+/*
+ * Unsolicited events
+ */
+
+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 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);
+
+ index = hda_node_index(spec->pin, tag);
+ if (index < 0)
+ return;
+
+ 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 */
+ }
+}
+
+static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
+{
+ int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
+ int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
+ int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
+ int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
+
+ printk(KERN_INFO
+ "HDMI CP event: PIN=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
+ tag,
+ subtag,
+ cp_state,
+ cp_ready);
+
+ /* TODO */
+ if (cp_state)
+ ;
+ if (cp_ready)
+ ;
+}
+
+
+static void hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
+{
+ struct hdmi_spec *spec = codec->spec;
+ int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
+ int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
+
+ if (hda_node_index(spec->pin, tag) < 0) {
+ snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
+ return;
+ }
+
+ if (subtag == 0)
+ hdmi_intrinsic_event(codec, res);
+ else
+ hdmi_non_intrinsic_event(codec, res);
+}
+
+/*
+ * Callbacks
+ */
+
+static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid,
+ u32 stream_tag, int format)
+{
+ int tag;
+ int fmt;
+
+ tag = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0) >> 4;
+ fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0);
+
+ snd_printdd("hdmi_setup_stream: "
+ "NID=0x%x, %sstream=0x%x, %sformat=0x%x\n",
+ nid,
+ tag == stream_tag ? "" : "new-",
+ stream_tag,
+ fmt == format ? "" : "new-",
+ format);
+
+ if (tag != stream_tag)
+ snd_hda_codec_write(codec, nid, 0,
+ AC_VERB_SET_CHANNEL_STREAMID,
+ stream_tag << 4);
+ if (fmt != format)
+ snd_hda_codec_write(codec, nid, 0,
+ AC_VERB_SET_STREAM_FORMAT, format);
+}
+
+/*
+ * HDA/HDMI auto parsing
+ */
+
+static int hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
+{
+ struct 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 void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
+ struct hdmi_eld *eld)
+{
+ int present = snd_hda_pin_sense(codec, pin_nid);
+
+ eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
+ eld->eld_valid = !!(present & AC_PINSENSE_ELDV);
+
+ if (present & AC_PINSENSE_ELDV)
+ hdmi_get_show_eld(codec, pin_nid, eld);
+}
+
+static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
+{
+ struct hdmi_spec *spec = codec->spec;
+
+ if (spec->num_pins >= MAX_HDMI_PINS) {
+ snd_printk(KERN_WARNING
+ "HDMI: no space for pin %d\n", pin_nid);
+ return -EINVAL;
+ }
+
+ hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]);
+
+ 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 hdmi_read_pin_conn(codec, pin_nid);
+}
+
+static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
+{
+ struct hdmi_spec *spec = codec->spec;
+
+ if (spec->num_cvts >= MAX_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 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 (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 | AC_PINCAP_DP)))
+ continue;
+ if (hdmi_add_pin(codec, nid) < 0)
+ return -EINVAL;
+ break;
+ }
+ }
+
+ /*
+ * G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event
+ * can be lost and presence sense verb will become inaccurate if the
+ * HDA link is powered off at hot plug or hw initialization time.
+ */
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+ if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
+ AC_PWRST_EPSS))
+ codec->bus->power_keep_link_on = 1;
+#endif
+
+ return 0;
+}
+
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-23 23:20:00 +0000