.vrefresh = 100, },
};
+/*
+ * HDMI 1.4 4k modes.
+ */
+static const struct drm_display_mode edid_4k_modes[] = {
+ /* 1 - 3840x2160@30Hz */
+ { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
+ 3840, 4016, 4104, 4400, 0,
+ 2160, 2168, 2178, 2250, 0,
+ DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
+ .vrefresh = 30, },
+ /* 2 - 3840x2160@25Hz */
+ { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
+ 3840, 4896, 4984, 5280, 0,
+ 2160, 2168, 2178, 2250, 0,
+ DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
+ .vrefresh = 25, },
+ /* 3 - 3840x2160@24Hz */
+ { DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 297000,
+ 3840, 5116, 5204, 5500, 0,
+ 2160, 2168, 2178, 2250, 0,
+ DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
+ .vrefresh = 24, },
+ /* 4 - 4096x2160@24Hz (SMPTE) */
+ { DRM_MODE("4096x2160", DRM_MODE_TYPE_DRIVER, 297000,
+ 4096, 5116, 5204, 5500, 0,
+ 2160, 2168, 2178, 2250, 0,
+ DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
+ .vrefresh = 24, },
+};
+
/*** DDC fetch and block validation ***/
static const u8 edid_header[] = {
return closure.modes;
}
-#define HDMI_IDENTIFIER 0x000C03
#define AUDIO_BLOCK 0x01
#define VIDEO_BLOCK 0x02
#define VENDOR_BLOCK 0x03
#define EDID_CEA_YCRCB422 (1 << 4)
#define EDID_CEA_VCDB_QS (1 << 6)
-/**
+/*
* Search EDID for CEA extension block.
*/
-u8 *drm_find_cea_extension(struct edid *edid)
+static u8 *drm_find_cea_extension(struct edid *edid)
{
u8 *edid_ext = NULL;
int i;
return edid_ext;
}
-EXPORT_SYMBOL(drm_find_cea_extension);
/*
* Calculate the alternate clock for the CEA mode
}
EXPORT_SYMBOL(drm_match_cea_mode);
+/*
+ * Calculate the alternate clock for HDMI modes (those from the HDMI vendor
+ * specific block).
+ *
+ * It's almost like cea_mode_alternate_clock(), we just need to add an
+ * exception for the VIC 4 mode (4096x2160@24Hz): no alternate clock for this
+ * one.
+ */
+static unsigned int
+hdmi_mode_alternate_clock(const struct drm_display_mode *hdmi_mode)
+{
+ if (hdmi_mode->vdisplay == 4096 && hdmi_mode->hdisplay == 2160)
+ return hdmi_mode->clock;
+
+ return cea_mode_alternate_clock(hdmi_mode);
+}
+
+/*
+ * drm_match_hdmi_mode - look for a HDMI mode matching given mode
+ * @to_match: display mode
+ *
+ * An HDMI mode is one defined in the HDMI vendor specific block.
+ *
+ * Returns the HDMI Video ID (VIC) of the mode or 0 if it isn't one.
+ */
+static u8 drm_match_hdmi_mode(const struct drm_display_mode *to_match)
+{
+ u8 mode;
+
+ if (!to_match->clock)
+ return 0;
+
+ for (mode = 0; mode < ARRAY_SIZE(edid_4k_modes); mode++) {
+ const struct drm_display_mode *hdmi_mode = &edid_4k_modes[mode];
+ unsigned int clock1, clock2;
+
+ /* Make sure to also match alternate clocks */
+ clock1 = hdmi_mode->clock;
+ clock2 = hdmi_mode_alternate_clock(hdmi_mode);
+
+ if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
+ KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
+ drm_mode_equal_no_clocks(to_match, hdmi_mode))
+ return mode + 1;
+ }
+ return 0;
+}
+
static int
add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid)
{
* with the alternate clock for certain CEA modes.
*/
list_for_each_entry(mode, &connector->probed_modes, head) {
- const struct drm_display_mode *cea_mode;
+ const struct drm_display_mode *cea_mode = NULL;
struct drm_display_mode *newmode;
- u8 cea_mode_idx = drm_match_cea_mode(mode) - 1;
+ u8 mode_idx = drm_match_cea_mode(mode) - 1;
unsigned int clock1, clock2;
- if (cea_mode_idx >= ARRAY_SIZE(edid_cea_modes))
- continue;
+ if (mode_idx < ARRAY_SIZE(edid_cea_modes)) {
+ cea_mode = &edid_cea_modes[mode_idx];
+ clock2 = cea_mode_alternate_clock(cea_mode);
+ } else {
+ mode_idx = drm_match_hdmi_mode(mode) - 1;
+ if (mode_idx < ARRAY_SIZE(edid_4k_modes)) {
+ cea_mode = &edid_4k_modes[mode_idx];
+ clock2 = hdmi_mode_alternate_clock(cea_mode);
+ }
+ }
- cea_mode = &edid_cea_modes[cea_mode_idx];
+ if (!cea_mode)
+ continue;
clock1 = cea_mode->clock;
- clock2 = cea_mode_alternate_clock(cea_mode);
if (clock1 == clock2)
continue;
}
static int
-do_cea_modes (struct drm_connector *connector, u8 *db, u8 len)
+do_cea_modes(struct drm_connector *connector, const u8 *db, u8 len)
{
struct drm_device *dev = connector->dev;
- u8 * mode, cea_mode;
+ const u8 *mode;
+ u8 cea_mode;
int modes = 0;
for (mode = db; mode < db + len; mode++) {
return modes;
}
+/*
+ * do_hdmi_vsdb_modes - Parse the HDMI Vendor Specific data block
+ * @connector: connector corresponding to the HDMI sink
+ * @db: start of the CEA vendor specific block
+ * @len: length of the CEA block payload, ie. one can access up to db[len]
+ *
+ * Parses the HDMI VSDB looking for modes to add to @connector.
+ */
+static int
+do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len)
+{
+ struct drm_device *dev = connector->dev;
+ int modes = 0, offset = 0, i;
+ u8 vic_len;
+
+ if (len < 8)
+ goto out;
+
+ /* no HDMI_Video_Present */
+ if (!(db[8] & (1 << 5)))
+ goto out;
+
+ /* Latency_Fields_Present */
+ if (db[8] & (1 << 7))
+ offset += 2;
+
+ /* I_Latency_Fields_Present */
+ if (db[8] & (1 << 6))
+ offset += 2;
+
+ /* the declared length is not long enough for the 2 first bytes
+ * of additional video format capabilities */
+ offset += 2;
+ if (len < (8 + offset))
+ goto out;
+
+ vic_len = db[8 + offset] >> 5;
+
+ for (i = 0; i < vic_len && len >= (9 + offset + i); i++) {
+ struct drm_display_mode *newmode;
+ u8 vic;
+
+ vic = db[9 + offset + i];
+
+ vic--; /* VICs start at 1 */
+ if (vic >= ARRAY_SIZE(edid_4k_modes)) {
+ DRM_ERROR("Unknown HDMI VIC: %d\n", vic);
+ continue;
+ }
+
+ newmode = drm_mode_duplicate(dev, &edid_4k_modes[vic]);
+ if (!newmode)
+ continue;
+
+ drm_mode_probed_add(connector, newmode);
+ modes++;
+ }
+
+out:
+ return modes;
+}
+
static int
cea_db_payload_len(const u8 *db)
{
return 0;
}
+static bool cea_db_is_hdmi_vsdb(const u8 *db)
+{
+ int hdmi_id;
+
+ if (cea_db_tag(db) != VENDOR_BLOCK)
+ return false;
+
+ if (cea_db_payload_len(db) < 5)
+ return false;
+
+ hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
+
+ return hdmi_id == HDMI_IEEE_OUI;
+}
+
#define for_each_cea_db(cea, i, start, end) \
for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1)
static int
add_cea_modes(struct drm_connector *connector, struct edid *edid)
{
- u8 * cea = drm_find_cea_extension(edid);
- u8 * db, dbl;
+ const u8 *cea = drm_find_cea_extension(edid);
+ const u8 *db;
+ u8 dbl;
int modes = 0;
if (cea && cea_revision(cea) >= 3) {
dbl = cea_db_payload_len(db);
if (cea_db_tag(db) == VIDEO_BLOCK)
- modes += do_cea_modes (connector, db+1, dbl);
+ modes += do_cea_modes(connector, db + 1, dbl);
+ else if (cea_db_is_hdmi_vsdb(db))
+ modes += do_hdmi_vsdb_modes(connector, db, dbl);
}
}
*(u8 **)data = t->data.other_data.data.str.str;
}
-static bool cea_db_is_hdmi_vsdb(const u8 *db)
-{
- int hdmi_id;
-
- if (cea_db_tag(db) != VENDOR_BLOCK)
- return false;
-
- if (cea_db_payload_len(db) < 5)
- return false;
-
- hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
-
- return hdmi_id == HDMI_IDENTIFIER;
-}
-
/**
* drm_edid_to_eld - build ELD from EDID
* @connector: connector corresponding to the HDMI/DP sink
if (err < 0)
return err;
+ if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+ frame->pixel_repeat = 1;
+
frame->video_code = drm_match_cea_mode(mode);
- if (!frame->video_code)
- return 0;
frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
frame->active_aspect = HDMI_ACTIVE_ASPECT_PICTURE;
return 0;
}
EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode);
+
+/**
+ * drm_hdmi_vendor_infoframe_from_display_mode() - fill an HDMI infoframe with
+ * data from a DRM display mode
+ * @frame: HDMI vendor infoframe
+ * @mode: DRM display mode
+ *
+ * Note that there's is a need to send HDMI vendor infoframes only when using a
+ * 4k or stereoscopic 3D mode. So when giving any other mode as input this
+ * function will return -EINVAL, error that can be safely ignored.
+ *
+ * Returns 0 on success or a negative error code on failure.
+ */
+int
+drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
+ const struct drm_display_mode *mode)
+{
+ int err;
+ u8 vic;
+
+ if (!frame || !mode)
+ return -EINVAL;
+
+ vic = drm_match_hdmi_mode(mode);
+ if (!vic)
+ return -EINVAL;
+
+ err = hdmi_vendor_infoframe_init(frame);
+ if (err < 0)
+ return err;
+
+ frame->vic = vic;
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_hdmi_vendor_infoframe_from_display_mode);
projects / ~andy / linux / blobdiff