uint8_t raw;
};
+union dpcd_max_uncompressed_pixel_rate_cap {
+ struct {
+ uint16_t max_uncompressed_pixel_rate_cap :15;
+ uint16_t valid :1;
+ } bits;
+ uint8_t raw[2];
+};
+
union dp_fec_capability1 {
struct {
uint8_t AGGREGATED_ERROR_COUNTERS_CAPABLE :1;
struct dc_lttpr_caps lttpr_caps;
struct adaptive_sync_caps adaptive_sync_caps;
struct dpcd_usb4_dp_tunneling_info usb4_dp_tun_info;
+ union dpcd_max_uncompressed_pixel_rate_cap max_uncompressed_pixel_rate_cap;
union dp_128b_132b_supported_link_rates dp_128b_132b_supported_link_rates;
union dp_main_line_channel_coding_cap channel_coding_cap;
#ifndef DP_CABLE_ATTRIBUTES_UPDATED_BY_DPTX
#define DP_CABLE_ATTRIBUTES_UPDATED_BY_DPTX 0x110
#endif
+#ifndef DPCD_MAX_UNCOMPRESSED_PIXEL_RATE_CAP
+#define DPCD_MAX_UNCOMPRESSED_PIXEL_RATE_CAP 0x221c
+#endif
#ifndef DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE
#define DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE 0x50
#endif
uint32_t max_target_bpp_limit_override_x16;
uint32_t slice_height_granularity;
uint32_t dsc_force_odm_hslice_override;
+ bool force_dsc_when_not_needed;
};
bool dc_dsc_parse_dsc_dpcd(const struct dc *dc,
*/
static bool decide_dsc_target_bpp_x16(
const struct dc_dsc_policy *policy,
+ const struct dc_dsc_config_options *options,
const struct dsc_enc_caps *dsc_common_caps,
const int target_bandwidth_kbps,
const struct dc_crtc_timing *timing,
if (decide_dsc_bandwidth_range(policy->min_target_bpp * 16, policy->max_target_bpp * 16,
num_slices_h, dsc_common_caps, timing, link_encoding, &range)) {
if (target_bandwidth_kbps >= range.stream_kbps) {
- if (policy->enable_dsc_when_not_needed)
+ if (policy->enable_dsc_when_not_needed || options->force_dsc_when_not_needed)
/* enable max bpp even dsc is not needed */
*target_bpp_x16 = range.max_target_bpp_x16;
} else if (target_bandwidth_kbps >= range.max_kbps) {
if (target_bandwidth_kbps > 0) {
is_dsc_possible = decide_dsc_target_bpp_x16(
&policy,
+ options,
&dsc_common_caps,
target_bandwidth_kbps,
timing,
policy->max_target_bpp = max_target_bpp_limit_override_x16 / 16;
/* enable DSC when not needed, default false */
- if (dsc_policy_enable_dsc_when_not_needed)
- policy->enable_dsc_when_not_needed = dsc_policy_enable_dsc_when_not_needed;
- else
- policy->enable_dsc_when_not_needed = false;
+ policy->enable_dsc_when_not_needed = dsc_policy_enable_dsc_when_not_needed;
}
void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit)
options->dsc_force_odm_hslice_override = dc->debug.force_odm_combine;
options->max_target_bpp_limit_override_x16 = 0;
options->slice_height_granularity = 1;
+ options->force_dsc_when_not_needed = false;
}
req_bw = dc_bandwidth_in_kbps_from_timing(timing, dc_link_get_highest_encoding_format(link));
max_bw = dp_link_bandwidth_kbps(link, link_setting);
+ bool is_max_uncompressed_pixel_rate_exceeded = link->dpcd_caps.max_uncompressed_pixel_rate_cap.bits.valid &&
+ timing->pix_clk_100hz > link->dpcd_caps.max_uncompressed_pixel_rate_cap.bits.max_uncompressed_pixel_rate_cap * 10000;
+
+ if (is_max_uncompressed_pixel_rate_exceeded && !timing->flags.DSC) {
+ return false;
+ }
+
if (req_bw <= max_bw) {
/* remember the biggest mode here, during
* initial link training (to get
DC_LOG_DP2("\tFEC aggregated error counters are supported");
}
+ core_link_read_dpcd(link,
+ DPCD_MAX_UNCOMPRESSED_PIXEL_RATE_CAP,
+ link->dpcd_caps.max_uncompressed_pixel_rate_cap.raw,
+ sizeof(link->dpcd_caps.max_uncompressed_pixel_rate_cap.raw));
+
retrieve_cable_id(link);
dpcd_write_cable_id_to_dprx(link);