@@ -5174,6 +5174,59 @@ static void dm_enable_per_frame_crtc_master_sync(struct dc_state *context)
set_master_stream(context->streams, context->stream_count);
}
+static struct drm_display_mode *
+get_highest_refresh_rate_mode(struct amdgpu_dm_connector *aconnector,
+ bool use_probed_modes)
+{
+ struct drm_display_mode *m, *m_pref = NULL;
+ u16 current_refresh, highest_refresh;
+ struct list_head *list_head = use_probed_modes ?
+ &aconnector->base.probed_modes :
+ &aconnector->base.modes;
+
+ if (aconnector->freesync_vid_base.clock != 0)
+ return &aconnector->freesync_vid_base;
+
+ /* Find the preferred mode */
+ list_for_each_entry (m, list_head, head) {
+ if (m->type & DRM_MODE_TYPE_PREFERRED) {
+ m_pref = m;
+ break;
+ }
+ }
+
+ if (!m_pref) {
+ /* Probably an EDID with no preferred mode. Fallback to first entry */
+ m_pref = list_first_entry_or_null(
+ &aconnector->base.modes, struct drm_display_mode, head);
+ if (!m_pref) {
+ DRM_DEBUG_DRIVER("No preferred mode found in EDID\n");
+ return NULL;
+ }
+ }
+
+ highest_refresh = drm_mode_vrefresh(m_pref);
+
+ /*
+ * Find the mode with highest refresh rate with same resolution.
+ * For some monitors, preferred mode is not the mode with highest
+ * supported refresh rate.
+ */
+ list_for_each_entry (m, list_head, head) {
+ current_refresh = drm_mode_vrefresh(m);
+
+ if (m->hdisplay == m_pref->hdisplay &&
+ m->vdisplay == m_pref->vdisplay &&
+ highest_refresh < current_refresh) {
+ highest_refresh = current_refresh;
+ m_pref = m;
+ }
+ }
+
+ aconnector->freesync_vid_base = *m_pref;
+ return m_pref;
+}
+
static struct dc_stream_state *
create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
const struct drm_display_mode *drm_mode,
@@ -6999,6 +7052,122 @@ static void amdgpu_dm_connector_ddc_get_modes(struct drm_connector *connector,
}
}
+static bool is_duplicate_mode(struct amdgpu_dm_connector *aconnector,
+ struct drm_display_mode *mode)
+{
+ struct drm_display_mode *m;
+
+ list_for_each_entry (m, &aconnector->base.probed_modes, head) {
+ if (drm_mode_equal(m, mode))
+ return true;
+ }
+
+ return false;
+}
+
+static uint add_fs_modes(struct amdgpu_dm_connector *aconnector,
+ struct detailed_data_monitor_range *range)
+{
+ const struct drm_display_mode *m;
+ struct drm_display_mode *new_mode;
+ uint i;
+ uint32_t new_modes_count = 0;
+
+ /* Standard FPS values
+ *
+ * 23.976 - TV/NTSC
+ * 24 - Cinema
+ * 25 - TV/PAL
+ * 29.97 - TV/NTSC
+ * 30 - TV/NTSC
+ * 48 - Cinema HFR
+ * 50 - TV/PAL
+ * 60 - Commonly used
+ * 48,72,96 - Multiples of 24
+ */
+ const uint32_t common_rates[] = { 23976, 24000, 25000, 29970, 30000,
+ 48000, 50000, 60000, 72000, 96000 };
+
+ /*
+ * Find mode with highest refresh rate with the same resolution
+ * as the preferred mode. Some monitors report a preferred mode
+ * with lower resolution than the highest refresh rate supported.
+ */
+
+ m = get_highest_refresh_rate_mode(aconnector, true);
+ if (!m)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(common_rates); i++) {
+ uint64_t target_vtotal, target_vtotal_diff;
+ uint64_t num, den;
+
+ if (drm_mode_vrefresh(m) * 1000 < common_rates[i])
+ continue;
+
+ if (common_rates[i] < range->min_vfreq * 1000)
+ continue;
+
+ num = (unsigned long long)m->clock * 1000 * 1000;
+ den = common_rates[i] * (unsigned long long)m->htotal;
+ target_vtotal = div_u64(num, den);
+ target_vtotal_diff = target_vtotal - m->vtotal;
+
+ /* Check for illegal modes */
+ if (m->vsync_start + target_vtotal_diff < m->vdisplay ||
+ m->vsync_end + target_vtotal_diff < m->vsync_start ||
+ m->vtotal + target_vtotal_diff < m->vsync_end)
+ continue;
+
+ new_mode = drm_mode_duplicate(aconnector->base.dev, m);
+ if (!new_mode)
+ goto out;
+
+ new_mode->vtotal += (u16)target_vtotal_diff;
+ new_mode->vsync_start += (u16)target_vtotal_diff;
+ new_mode->vsync_end += (u16)target_vtotal_diff;
+ new_mode->type &= ~DRM_MODE_TYPE_PREFERRED;
+ new_mode->type |= DRM_MODE_TYPE_DRIVER;
+
+ if (!is_duplicate_mode(aconnector, new_mode)) {
+ drm_mode_probed_add(&aconnector->base, new_mode);
+ new_modes_count += 1;
+ } else
+ drm_mode_destroy(aconnector->base.dev, new_mode);
+ }
+ out:
+ return new_modes_count;
+}
+
+static void amdgpu_dm_connector_add_freesync_modes(struct drm_connector *connector,
+ struct edid *edid)
+{
+ uint8_t i;
+ struct detailed_timing *timing;
+ struct detailed_non_pixel *data;
+ struct detailed_data_monitor_range *range;
+ struct amdgpu_dm_connector *amdgpu_dm_connector =
+ to_amdgpu_dm_connector(connector);
+
+ if (!(amdgpu_exp_freesync_vid_mode && edid))
+ return;
+
+ if (edid->version == 1 && edid->revision > 1) {
+ for (i = 0; i < 4; i++) {
+ timing = &edid->detailed_timings[i];
+ data = &timing->data.other_data;
+ range = &data->data.range;
+
+ /* Check if monitor has continuous frequency mode */
+ if (data->type == EDID_DETAIL_MONITOR_RANGE &&
+ range->max_vfreq - range->min_vfreq > 10) {
+ amdgpu_dm_connector->num_modes += add_fs_modes(amdgpu_dm_connector, range);
+ break;
+ }
+ }
+ }
+}
+
static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
{
struct amdgpu_dm_connector *amdgpu_dm_connector =
@@ -7014,6 +7183,7 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
} else {
amdgpu_dm_connector_ddc_get_modes(connector, edid);
amdgpu_dm_connector_add_common_modes(encoder, connector);
+ amdgpu_dm_connector_add_freesync_modes(connector, edid);
}
amdgpu_dm_fbc_init(connector);
@@ -432,6 +432,8 @@ struct amdgpu_dm_connector {
#endif
bool force_yuv420_output;
struct dsc_preferred_settings dsc_settings;
+ /* Cached display modes */
+ struct drm_display_mode freesync_vid_base;
};
#define to_amdgpu_dm_connector(x) container_of(x, struct amdgpu_dm_connector, base)