@@ -327,6 +327,7 @@ i915-y += \
display/intel_dp_hdcp.o \
display/intel_dp_link_training.o \
display/intel_dp_mst.o \
+ display/intel_dp_test.o \
display/intel_dsi.o \
display/intel_dsi_dcs_backlight.o \
display/intel_dsi_vbt.o \
@@ -19,6 +19,7 @@
#include "intel_dp.h"
#include "intel_dp_aux.h"
#include "intel_dp_link_training.h"
+#include "intel_dp_test.h"
#include "intel_dpio_phy.h"
#include "intel_encoder.h"
#include "intel_fifo_underrun.h"
@@ -54,6 +54,7 @@
#include "intel_dp_aux.h"
#include "intel_dp_link_training.h"
#include "intel_dp_mst.h"
+#include "intel_dp_test.h"
#include "intel_dp_tunnel.h"
#include "intel_dpio_phy.h"
#include "intel_dsi.h"
@@ -67,6 +67,7 @@
#include "intel_dp_hdcp.h"
#include "intel_dp_link_training.h"
#include "intel_dp_mst.h"
+#include "intel_dp_test.h"
#include "intel_dp_tunnel.h"
#include "intel_dpio_phy.h"
#include "intel_dpll.h"
@@ -103,13 +104,6 @@
/* DP DSC FEC Overhead factor in ppm = 1/(0.972261) = 1.028530 */
#define DP_DSC_FEC_OVERHEAD_FACTOR 1028530
-/* Compliance test status bits */
-#define INTEL_DP_RESOLUTION_SHIFT_MASK 0
-#define INTEL_DP_RESOLUTION_PREFERRED (1 << INTEL_DP_RESOLUTION_SHIFT_MASK)
-#define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
-#define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
-
-
/* Constants for DP DSC configurations */
static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15};
@@ -770,8 +764,8 @@ static void intel_dp_set_common_rates(struct intel_dp *intel_dp)
intel_dp_link_config_init(intel_dp);
}
-static bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate,
- u8 lane_count)
+bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate,
+ u8 lane_count)
{
/*
* FIXME: we need to synchronize the current link parameters with
@@ -1636,45 +1630,6 @@ static int intel_dp_max_bpp(struct intel_dp *intel_dp,
return bpp;
}
-/* Adjust link config limits based on compliance test requests. */
-void
-intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
- struct intel_crtc_state *pipe_config,
- struct link_config_limits *limits)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
-
- /* For DP Compliance we override the computed bpp for the pipe */
- if (intel_dp->compliance.test_data.bpc != 0) {
- int bpp = 3 * intel_dp->compliance.test_data.bpc;
-
- limits->pipe.min_bpp = limits->pipe.max_bpp = bpp;
- pipe_config->dither_force_disable = bpp == 6 * 3;
-
- drm_dbg_kms(&i915->drm, "Setting pipe_bpp to %d\n", bpp);
- }
-
- /* Use values requested by Compliance Test Request */
- if (intel_dp->compliance.test_type == DP_TEST_LINK_TRAINING) {
- int index;
-
- /* Validate the compliance test data since max values
- * might have changed due to link train fallback.
- */
- if (intel_dp_link_params_valid(intel_dp, intel_dp->compliance.test_link_rate,
- intel_dp->compliance.test_lane_count)) {
- index = intel_dp_rate_index(intel_dp->common_rates,
- intel_dp->num_common_rates,
- intel_dp->compliance.test_link_rate);
- if (index >= 0)
- limits->min_rate = limits->max_rate =
- intel_dp->compliance.test_link_rate;
- limits->min_lane_count = limits->max_lane_count =
- intel_dp->compliance.test_lane_count;
- }
- }
-}
-
static bool has_seamless_m_n(struct intel_connector *connector)
{
struct drm_i915_private *i915 = to_i915(connector->base.dev);
@@ -4786,328 +4741,6 @@ void intel_read_dp_sdp(struct intel_encoder *encoder,
}
}
-static u8 intel_dp_autotest_link_training(struct intel_dp *intel_dp)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- int status = 0;
- int test_link_rate;
- u8 test_lane_count, test_link_bw;
- /* (DP CTS 1.2)
- * 4.3.1.11
- */
- /* Read the TEST_LANE_COUNT and TEST_LINK_RTAE fields (DP CTS 3.1.4) */
- status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_LANE_COUNT,
- &test_lane_count);
-
- if (status <= 0) {
- drm_dbg_kms(&i915->drm, "Lane count read failed\n");
- return DP_TEST_NAK;
- }
- test_lane_count &= DP_MAX_LANE_COUNT_MASK;
-
- status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_LINK_RATE,
- &test_link_bw);
- if (status <= 0) {
- drm_dbg_kms(&i915->drm, "Link Rate read failed\n");
- return DP_TEST_NAK;
- }
- test_link_rate = drm_dp_bw_code_to_link_rate(test_link_bw);
-
- /* Validate the requested link rate and lane count */
- if (!intel_dp_link_params_valid(intel_dp, test_link_rate,
- test_lane_count))
- return DP_TEST_NAK;
-
- intel_dp->compliance.test_lane_count = test_lane_count;
- intel_dp->compliance.test_link_rate = test_link_rate;
-
- return DP_TEST_ACK;
-}
-
-static u8 intel_dp_autotest_video_pattern(struct intel_dp *intel_dp)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- u8 test_pattern;
- u8 test_misc;
- __be16 h_width, v_height;
- int status = 0;
-
- /* Read the TEST_PATTERN (DP CTS 3.1.5) */
- status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_PATTERN,
- &test_pattern);
- if (status <= 0) {
- drm_dbg_kms(&i915->drm, "Test pattern read failed\n");
- return DP_TEST_NAK;
- }
- if (test_pattern != DP_COLOR_RAMP)
- return DP_TEST_NAK;
-
- status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_H_WIDTH_HI,
- &h_width, 2);
- if (status <= 0) {
- drm_dbg_kms(&i915->drm, "H Width read failed\n");
- return DP_TEST_NAK;
- }
-
- status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_V_HEIGHT_HI,
- &v_height, 2);
- if (status <= 0) {
- drm_dbg_kms(&i915->drm, "V Height read failed\n");
- return DP_TEST_NAK;
- }
-
- status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_MISC0,
- &test_misc);
- if (status <= 0) {
- drm_dbg_kms(&i915->drm, "TEST MISC read failed\n");
- return DP_TEST_NAK;
- }
- if ((test_misc & DP_TEST_COLOR_FORMAT_MASK) != DP_COLOR_FORMAT_RGB)
- return DP_TEST_NAK;
- if (test_misc & DP_TEST_DYNAMIC_RANGE_CEA)
- return DP_TEST_NAK;
- switch (test_misc & DP_TEST_BIT_DEPTH_MASK) {
- case DP_TEST_BIT_DEPTH_6:
- intel_dp->compliance.test_data.bpc = 6;
- break;
- case DP_TEST_BIT_DEPTH_8:
- intel_dp->compliance.test_data.bpc = 8;
- break;
- default:
- return DP_TEST_NAK;
- }
-
- intel_dp->compliance.test_data.video_pattern = test_pattern;
- intel_dp->compliance.test_data.hdisplay = be16_to_cpu(h_width);
- intel_dp->compliance.test_data.vdisplay = be16_to_cpu(v_height);
- /* Set test active flag here so userspace doesn't interrupt things */
- intel_dp->compliance.test_active = true;
-
- return DP_TEST_ACK;
-}
-
-static u8 intel_dp_autotest_edid(struct intel_dp *intel_dp)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- u8 test_result = DP_TEST_ACK;
- struct intel_connector *intel_connector = intel_dp->attached_connector;
- struct drm_connector *connector = &intel_connector->base;
-
- if (intel_connector->detect_edid == NULL ||
- connector->edid_corrupt ||
- intel_dp->aux.i2c_defer_count > 6) {
- /* Check EDID read for NACKs, DEFERs and corruption
- * (DP CTS 1.2 Core r1.1)
- * 4.2.2.4 : Failed EDID read, I2C_NAK
- * 4.2.2.5 : Failed EDID read, I2C_DEFER
- * 4.2.2.6 : EDID corruption detected
- * Use failsafe mode for all cases
- */
- if (intel_dp->aux.i2c_nack_count > 0 ||
- intel_dp->aux.i2c_defer_count > 0)
- drm_dbg_kms(&i915->drm,
- "EDID read had %d NACKs, %d DEFERs\n",
- intel_dp->aux.i2c_nack_count,
- intel_dp->aux.i2c_defer_count);
- intel_dp->compliance.test_data.edid = INTEL_DP_RESOLUTION_FAILSAFE;
- } else {
- /* FIXME: Get rid of drm_edid_raw() */
- const struct edid *block = drm_edid_raw(intel_connector->detect_edid);
-
- /* We have to write the checksum of the last block read */
- block += block->extensions;
-
- if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_EDID_CHECKSUM,
- block->checksum) <= 0)
- drm_dbg_kms(&i915->drm,
- "Failed to write EDID checksum\n");
-
- test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE;
- intel_dp->compliance.test_data.edid = INTEL_DP_RESOLUTION_PREFERRED;
- }
-
- /* Set test active flag here so userspace doesn't interrupt things */
- intel_dp->compliance.test_active = true;
-
- return test_result;
-}
-
-static void intel_dp_phy_pattern_update(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct drm_i915_private *dev_priv =
- to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
- struct drm_dp_phy_test_params *data =
- &intel_dp->compliance.test_data.phytest;
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
- enum pipe pipe = crtc->pipe;
- u32 pattern_val;
-
- switch (data->phy_pattern) {
- case DP_LINK_QUAL_PATTERN_DISABLE:
- drm_dbg_kms(&dev_priv->drm, "Disable Phy Test Pattern\n");
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe), 0x0);
- if (DISPLAY_VER(dev_priv) >= 10)
- intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state),
- DP_TP_CTL_TRAIN_PAT4_SEL_MASK | DP_TP_CTL_LINK_TRAIN_MASK,
- DP_TP_CTL_LINK_TRAIN_NORMAL);
- break;
- case DP_LINK_QUAL_PATTERN_D10_2:
- drm_dbg_kms(&dev_priv->drm, "Set D10.2 Phy Test Pattern\n");
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
- DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_D10_2);
- break;
- case DP_LINK_QUAL_PATTERN_ERROR_RATE:
- drm_dbg_kms(&dev_priv->drm, "Set Error Count Phy Test Pattern\n");
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
- DDI_DP_COMP_CTL_ENABLE |
- DDI_DP_COMP_CTL_SCRAMBLED_0);
- break;
- case DP_LINK_QUAL_PATTERN_PRBS7:
- drm_dbg_kms(&dev_priv->drm, "Set PRBS7 Phy Test Pattern\n");
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
- DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_PRBS7);
- break;
- case DP_LINK_QUAL_PATTERN_80BIT_CUSTOM:
- /*
- * FIXME: Ideally pattern should come from DPCD 0x250. As
- * current firmware of DPR-100 could not set it, so hardcoding
- * now for complaince test.
- */
- drm_dbg_kms(&dev_priv->drm,
- "Set 80Bit Custom Phy Test Pattern 0x3e0f83e0 0x0f83e0f8 0x0000f83e\n");
- pattern_val = 0x3e0f83e0;
- intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 0), pattern_val);
- pattern_val = 0x0f83e0f8;
- intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 1), pattern_val);
- pattern_val = 0x0000f83e;
- intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 2), pattern_val);
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
- DDI_DP_COMP_CTL_ENABLE |
- DDI_DP_COMP_CTL_CUSTOM80);
- break;
- case DP_LINK_QUAL_PATTERN_CP2520_PAT_1:
- /*
- * FIXME: Ideally pattern should come from DPCD 0x24A. As
- * current firmware of DPR-100 could not set it, so hardcoding
- * now for complaince test.
- */
- drm_dbg_kms(&dev_priv->drm, "Set HBR2 compliance Phy Test Pattern\n");
- pattern_val = 0xFB;
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
- DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_HBR2 |
- pattern_val);
- break;
- case DP_LINK_QUAL_PATTERN_CP2520_PAT_3:
- if (DISPLAY_VER(dev_priv) < 10) {
- drm_warn(&dev_priv->drm, "Platform does not support TPS4\n");
- break;
- }
- drm_dbg_kms(&dev_priv->drm, "Set TPS4 compliance Phy Test Pattern\n");
- intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe), 0x0);
- intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state),
- DP_TP_CTL_TRAIN_PAT4_SEL_MASK | DP_TP_CTL_LINK_TRAIN_MASK,
- DP_TP_CTL_TRAIN_PAT4_SEL_TP4A | DP_TP_CTL_LINK_TRAIN_PAT4);
- break;
- default:
- drm_warn(&dev_priv->drm, "Invalid Phy Test Pattern\n");
- }
-}
-
-static void intel_dp_process_phy_request(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- struct drm_dp_phy_test_params *data =
- &intel_dp->compliance.test_data.phytest;
- u8 link_status[DP_LINK_STATUS_SIZE];
-
- if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, DP_PHY_DPRX,
- link_status) < 0) {
- drm_dbg_kms(&i915->drm, "failed to get link status\n");
- return;
- }
-
- /* retrieve vswing & pre-emphasis setting */
- intel_dp_get_adjust_train(intel_dp, crtc_state, DP_PHY_DPRX,
- link_status);
-
- intel_dp_set_signal_levels(intel_dp, crtc_state, DP_PHY_DPRX);
-
- intel_dp_phy_pattern_update(intel_dp, crtc_state);
-
- drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET,
- intel_dp->train_set, crtc_state->lane_count);
-
- drm_dp_set_phy_test_pattern(&intel_dp->aux, data,
- intel_dp->dpcd[DP_DPCD_REV]);
-}
-
-static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- struct drm_dp_phy_test_params *data =
- &intel_dp->compliance.test_data.phytest;
-
- if (drm_dp_get_phy_test_pattern(&intel_dp->aux, data)) {
- drm_dbg_kms(&i915->drm, "DP Phy Test pattern AUX read failure\n");
- return DP_TEST_NAK;
- }
-
- /* Set test active flag here so userspace doesn't interrupt things */
- intel_dp->compliance.test_active = true;
-
- return DP_TEST_ACK;
-}
-
-static void intel_dp_handle_test_request(struct intel_dp *intel_dp)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- u8 response = DP_TEST_NAK;
- u8 request = 0;
- int status;
-
- status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_REQUEST, &request);
- if (status <= 0) {
- drm_dbg_kms(&i915->drm,
- "Could not read test request from sink\n");
- goto update_status;
- }
-
- switch (request) {
- case DP_TEST_LINK_TRAINING:
- drm_dbg_kms(&i915->drm, "LINK_TRAINING test requested\n");
- response = intel_dp_autotest_link_training(intel_dp);
- break;
- case DP_TEST_LINK_VIDEO_PATTERN:
- drm_dbg_kms(&i915->drm, "TEST_PATTERN test requested\n");
- response = intel_dp_autotest_video_pattern(intel_dp);
- break;
- case DP_TEST_LINK_EDID_READ:
- drm_dbg_kms(&i915->drm, "EDID test requested\n");
- response = intel_dp_autotest_edid(intel_dp);
- break;
- case DP_TEST_LINK_PHY_TEST_PATTERN:
- drm_dbg_kms(&i915->drm, "PHY_PATTERN test requested\n");
- response = intel_dp_autotest_phy_pattern(intel_dp);
- break;
- default:
- drm_dbg_kms(&i915->drm, "Invalid test request '%02x'\n",
- request);
- break;
- }
-
- if (response & DP_TEST_ACK)
- intel_dp->compliance.test_type = request;
-
-update_status:
- status = drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, response);
- if (status <= 0)
- drm_dbg_kms(&i915->drm,
- "Could not write test response to sink\n");
-}
-
static bool intel_dp_link_ok(struct intel_dp *intel_dp,
u8 link_status[DP_LINK_STATUS_SIZE])
{
@@ -5308,8 +4941,8 @@ intel_dp_needs_link_retrain(struct intel_dp *intel_dp)
return !intel_dp_link_ok(intel_dp, link_status);
}
-static bool intel_dp_has_connector(struct intel_dp *intel_dp,
- const struct drm_connector_state *conn_state)
+bool intel_dp_has_connector(struct intel_dp *intel_dp,
+ const struct drm_connector_state *conn_state)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
struct intel_encoder *encoder;
@@ -5460,118 +5093,6 @@ void intel_dp_check_link_state(struct intel_dp *intel_dp)
intel_encoder_link_check_queue_work(encoder, 0);
}
-static int intel_dp_prep_phy_test(struct intel_dp *intel_dp,
- struct drm_modeset_acquire_ctx *ctx,
- u8 *pipe_mask)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- struct drm_connector_list_iter conn_iter;
- struct intel_connector *connector;
- int ret = 0;
-
- *pipe_mask = 0;
-
- drm_connector_list_iter_begin(&i915->drm, &conn_iter);
- for_each_intel_connector_iter(connector, &conn_iter) {
- struct drm_connector_state *conn_state =
- connector->base.state;
- struct intel_crtc_state *crtc_state;
- struct intel_crtc *crtc;
-
- if (!intel_dp_has_connector(intel_dp, conn_state))
- continue;
-
- crtc = to_intel_crtc(conn_state->crtc);
- if (!crtc)
- continue;
-
- ret = drm_modeset_lock(&crtc->base.mutex, ctx);
- if (ret)
- break;
-
- crtc_state = to_intel_crtc_state(crtc->base.state);
-
- drm_WARN_ON(&i915->drm, !intel_crtc_has_dp_encoder(crtc_state));
-
- if (!crtc_state->hw.active)
- continue;
-
- if (conn_state->commit &&
- !try_wait_for_completion(&conn_state->commit->hw_done))
- continue;
-
- *pipe_mask |= BIT(crtc->pipe);
- }
- drm_connector_list_iter_end(&conn_iter);
-
- return ret;
-}
-
-static int intel_dp_do_phy_test(struct intel_encoder *encoder,
- struct drm_modeset_acquire_ctx *ctx)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- struct intel_crtc *crtc;
- u8 pipe_mask;
- int ret;
-
- ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
- ctx);
- if (ret)
- return ret;
-
- ret = intel_dp_prep_phy_test(intel_dp, ctx, &pipe_mask);
- if (ret)
- return ret;
-
- if (pipe_mask == 0)
- return 0;
-
- drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s] PHY test\n",
- encoder->base.base.id, encoder->base.name);
-
- for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
- const struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
-
- /* test on the MST master transcoder */
- if (DISPLAY_VER(dev_priv) >= 12 &&
- intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) &&
- !intel_dp_mst_is_master_trans(crtc_state))
- continue;
-
- intel_dp_process_phy_request(intel_dp, crtc_state);
- break;
- }
-
- return 0;
-}
-
-void intel_dp_phy_test(struct intel_encoder *encoder)
-{
- struct drm_modeset_acquire_ctx ctx;
- int ret;
-
- drm_modeset_acquire_init(&ctx, 0);
-
- for (;;) {
- ret = intel_dp_do_phy_test(encoder, &ctx);
-
- if (ret == -EDEADLK) {
- drm_modeset_backoff(&ctx);
- continue;
- }
-
- break;
- }
-
- drm_modeset_drop_locks(&ctx);
- drm_modeset_acquire_fini(&ctx);
- drm_WARN(encoder->base.dev, ret,
- "Acquiring modeset locks failed with %i\n", ret);
-}
-
static void intel_dp_check_device_service_irq(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
@@ -37,9 +37,6 @@ struct link_config_limits {
};
void intel_edp_fixup_vbt_bpp(struct intel_encoder *encoder, int pipe_bpp);
-void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
- struct intel_crtc_state *pipe_config,
- struct link_config_limits *limits);
bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state);
int intel_dp_min_bpp(enum intel_output_format output_format);
@@ -191,7 +188,6 @@ void intel_dp_sync_state(struct intel_encoder *encoder,
void intel_dp_check_frl_training(struct intel_dp *intel_dp);
void intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state);
-void intel_dp_phy_test(struct intel_encoder *encoder);
void intel_dp_wait_source_oui(struct intel_dp *intel_dp);
int intel_dp_output_bpp(enum intel_output_format output_format, int bpp);
@@ -205,4 +201,9 @@ intel_dp_compute_config_link_bpp_limits(struct intel_dp *intel_dp,
void intel_dp_get_dsc_sink_cap(u8 dpcd_rev, struct intel_connector *connector);
bool intel_dp_has_gamut_metadata_dip(struct intel_encoder *encoder);
+bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate,
+ u8 lane_count);
+bool intel_dp_has_connector(struct intel_dp *intel_dp,
+ const struct drm_connector_state *conn_state);
+
#endif /* __INTEL_DP_H__ */
@@ -41,9 +41,10 @@
#include "intel_display_types.h"
#include "intel_dp.h"
#include "intel_dp_hdcp.h"
+#include "intel_dp_link_training.h"
#include "intel_dp_mst.h"
+#include "intel_dp_test.h"
#include "intel_dp_tunnel.h"
-#include "intel_dp_link_training.h"
#include "intel_dpio_phy.h"
#include "intel_hdcp.h"
#include "intel_hotplug.h"
new file mode 100644
@@ -0,0 +1,499 @@
+// SPDX-License-Identifier: MIT
+/* Copyright © 2024 Intel Corporation */
+
+#include <drm/display/drm_dp.h>
+#include <drm/display/drm_dp_helper.h>
+#include <drm/drm_edid.h>
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_ddi.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_link_training.h"
+#include "intel_dp_mst.h"
+#include "intel_dp_test.h"
+
+#define dp_to_i915(__intel_dp) to_i915(dp_to_dig_port(__intel_dp)->base.base.dev)
+
+/* Adjust link config limits based on compliance test requests. */
+void
+intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
+ struct intel_crtc_state *pipe_config,
+ struct link_config_limits *limits)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+ /* For DP Compliance we override the computed bpp for the pipe */
+ if (intel_dp->compliance.test_data.bpc != 0) {
+ int bpp = 3 * intel_dp->compliance.test_data.bpc;
+
+ limits->pipe.min_bpp = limits->pipe.max_bpp = bpp;
+ pipe_config->dither_force_disable = bpp == 6 * 3;
+
+ drm_dbg_kms(&i915->drm, "Setting pipe_bpp to %d\n", bpp);
+ }
+
+ /* Use values requested by Compliance Test Request */
+ if (intel_dp->compliance.test_type == DP_TEST_LINK_TRAINING) {
+ int index;
+
+ /* Validate the compliance test data since max values
+ * might have changed due to link train fallback.
+ */
+ if (intel_dp_link_params_valid(intel_dp, intel_dp->compliance.test_link_rate,
+ intel_dp->compliance.test_lane_count)) {
+ index = intel_dp_rate_index(intel_dp->common_rates,
+ intel_dp->num_common_rates,
+ intel_dp->compliance.test_link_rate);
+ if (index >= 0)
+ limits->min_rate = limits->max_rate =
+ intel_dp->compliance.test_link_rate;
+ limits->min_lane_count = limits->max_lane_count =
+ intel_dp->compliance.test_lane_count;
+ }
+ }
+}
+
+/* Compliance test status bits */
+#define INTEL_DP_RESOLUTION_SHIFT_MASK 0
+#define INTEL_DP_RESOLUTION_PREFERRED (1 << INTEL_DP_RESOLUTION_SHIFT_MASK)
+#define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
+#define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
+
+static u8 intel_dp_autotest_link_training(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ int status = 0;
+ int test_link_rate;
+ u8 test_lane_count, test_link_bw;
+ /* (DP CTS 1.2)
+ * 4.3.1.11
+ */
+ /* Read the TEST_LANE_COUNT and TEST_LINK_RTAE fields (DP CTS 3.1.4) */
+ status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_LANE_COUNT,
+ &test_lane_count);
+
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm, "Lane count read failed\n");
+ return DP_TEST_NAK;
+ }
+ test_lane_count &= DP_MAX_LANE_COUNT_MASK;
+
+ status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_LINK_RATE,
+ &test_link_bw);
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm, "Link Rate read failed\n");
+ return DP_TEST_NAK;
+ }
+ test_link_rate = drm_dp_bw_code_to_link_rate(test_link_bw);
+
+ /* Validate the requested link rate and lane count */
+ if (!intel_dp_link_params_valid(intel_dp, test_link_rate,
+ test_lane_count))
+ return DP_TEST_NAK;
+
+ intel_dp->compliance.test_lane_count = test_lane_count;
+ intel_dp->compliance.test_link_rate = test_link_rate;
+
+ return DP_TEST_ACK;
+}
+
+static u8 intel_dp_autotest_video_pattern(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ u8 test_pattern;
+ u8 test_misc;
+ __be16 h_width, v_height;
+ int status = 0;
+
+ /* Read the TEST_PATTERN (DP CTS 3.1.5) */
+ status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_PATTERN,
+ &test_pattern);
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm, "Test pattern read failed\n");
+ return DP_TEST_NAK;
+ }
+ if (test_pattern != DP_COLOR_RAMP)
+ return DP_TEST_NAK;
+
+ status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_H_WIDTH_HI,
+ &h_width, 2);
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm, "H Width read failed\n");
+ return DP_TEST_NAK;
+ }
+
+ status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_V_HEIGHT_HI,
+ &v_height, 2);
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm, "V Height read failed\n");
+ return DP_TEST_NAK;
+ }
+
+ status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_MISC0,
+ &test_misc);
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm, "TEST MISC read failed\n");
+ return DP_TEST_NAK;
+ }
+ if ((test_misc & DP_TEST_COLOR_FORMAT_MASK) != DP_COLOR_FORMAT_RGB)
+ return DP_TEST_NAK;
+ if (test_misc & DP_TEST_DYNAMIC_RANGE_CEA)
+ return DP_TEST_NAK;
+ switch (test_misc & DP_TEST_BIT_DEPTH_MASK) {
+ case DP_TEST_BIT_DEPTH_6:
+ intel_dp->compliance.test_data.bpc = 6;
+ break;
+ case DP_TEST_BIT_DEPTH_8:
+ intel_dp->compliance.test_data.bpc = 8;
+ break;
+ default:
+ return DP_TEST_NAK;
+ }
+
+ intel_dp->compliance.test_data.video_pattern = test_pattern;
+ intel_dp->compliance.test_data.hdisplay = be16_to_cpu(h_width);
+ intel_dp->compliance.test_data.vdisplay = be16_to_cpu(v_height);
+ /* Set test active flag here so userspace doesn't interrupt things */
+ intel_dp->compliance.test_active = true;
+
+ return DP_TEST_ACK;
+}
+
+static u8 intel_dp_autotest_edid(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ u8 test_result = DP_TEST_ACK;
+ struct intel_connector *intel_connector = intel_dp->attached_connector;
+ struct drm_connector *connector = &intel_connector->base;
+
+ if (intel_connector->detect_edid == NULL ||
+ connector->edid_corrupt ||
+ intel_dp->aux.i2c_defer_count > 6) {
+ /* Check EDID read for NACKs, DEFERs and corruption
+ * (DP CTS 1.2 Core r1.1)
+ * 4.2.2.4 : Failed EDID read, I2C_NAK
+ * 4.2.2.5 : Failed EDID read, I2C_DEFER
+ * 4.2.2.6 : EDID corruption detected
+ * Use failsafe mode for all cases
+ */
+ if (intel_dp->aux.i2c_nack_count > 0 ||
+ intel_dp->aux.i2c_defer_count > 0)
+ drm_dbg_kms(&i915->drm,
+ "EDID read had %d NACKs, %d DEFERs\n",
+ intel_dp->aux.i2c_nack_count,
+ intel_dp->aux.i2c_defer_count);
+ intel_dp->compliance.test_data.edid = INTEL_DP_RESOLUTION_FAILSAFE;
+ } else {
+ /* FIXME: Get rid of drm_edid_raw() */
+ const struct edid *block = drm_edid_raw(intel_connector->detect_edid);
+
+ /* We have to write the checksum of the last block read */
+ block += block->extensions;
+
+ if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_EDID_CHECKSUM,
+ block->checksum) <= 0)
+ drm_dbg_kms(&i915->drm,
+ "Failed to write EDID checksum\n");
+
+ test_result = DP_TEST_ACK | DP_TEST_EDID_CHECKSUM_WRITE;
+ intel_dp->compliance.test_data.edid = INTEL_DP_RESOLUTION_PREFERRED;
+ }
+
+ /* Set test active flag here so userspace doesn't interrupt things */
+ intel_dp->compliance.test_active = true;
+
+ return test_result;
+}
+
+static void intel_dp_phy_pattern_update(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv =
+ to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
+ struct drm_dp_phy_test_params *data =
+ &intel_dp->compliance.test_data.phytest;
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+ enum pipe pipe = crtc->pipe;
+ u32 pattern_val;
+
+ switch (data->phy_pattern) {
+ case DP_LINK_QUAL_PATTERN_DISABLE:
+ drm_dbg_kms(&dev_priv->drm, "Disable Phy Test Pattern\n");
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe), 0x0);
+ if (DISPLAY_VER(dev_priv) >= 10)
+ intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state),
+ DP_TP_CTL_TRAIN_PAT4_SEL_MASK | DP_TP_CTL_LINK_TRAIN_MASK,
+ DP_TP_CTL_LINK_TRAIN_NORMAL);
+ break;
+ case DP_LINK_QUAL_PATTERN_D10_2:
+ drm_dbg_kms(&dev_priv->drm, "Set D10.2 Phy Test Pattern\n");
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_D10_2);
+ break;
+ case DP_LINK_QUAL_PATTERN_ERROR_RATE:
+ drm_dbg_kms(&dev_priv->drm, "Set Error Count Phy Test Pattern\n");
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+ DDI_DP_COMP_CTL_ENABLE |
+ DDI_DP_COMP_CTL_SCRAMBLED_0);
+ break;
+ case DP_LINK_QUAL_PATTERN_PRBS7:
+ drm_dbg_kms(&dev_priv->drm, "Set PRBS7 Phy Test Pattern\n");
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_PRBS7);
+ break;
+ case DP_LINK_QUAL_PATTERN_80BIT_CUSTOM:
+ /*
+ * FIXME: Ideally pattern should come from DPCD 0x250. As
+ * current firmware of DPR-100 could not set it, so hardcoding
+ * now for complaince test.
+ */
+ drm_dbg_kms(&dev_priv->drm,
+ "Set 80Bit Custom Phy Test Pattern 0x3e0f83e0 0x0f83e0f8 0x0000f83e\n");
+ pattern_val = 0x3e0f83e0;
+ intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 0), pattern_val);
+ pattern_val = 0x0f83e0f8;
+ intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 1), pattern_val);
+ pattern_val = 0x0000f83e;
+ intel_de_write(dev_priv, DDI_DP_COMP_PAT(pipe, 2), pattern_val);
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+ DDI_DP_COMP_CTL_ENABLE |
+ DDI_DP_COMP_CTL_CUSTOM80);
+ break;
+ case DP_LINK_QUAL_PATTERN_CP2520_PAT_1:
+ /*
+ * FIXME: Ideally pattern should come from DPCD 0x24A. As
+ * current firmware of DPR-100 could not set it, so hardcoding
+ * now for complaince test.
+ */
+ drm_dbg_kms(&dev_priv->drm, "Set HBR2 compliance Phy Test Pattern\n");
+ pattern_val = 0xFB;
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_HBR2 |
+ pattern_val);
+ break;
+ case DP_LINK_QUAL_PATTERN_CP2520_PAT_3:
+ if (DISPLAY_VER(dev_priv) < 10) {
+ drm_warn(&dev_priv->drm, "Platform does not support TPS4\n");
+ break;
+ }
+ drm_dbg_kms(&dev_priv->drm, "Set TPS4 compliance Phy Test Pattern\n");
+ intel_de_write(dev_priv, DDI_DP_COMP_CTL(pipe), 0x0);
+ intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state),
+ DP_TP_CTL_TRAIN_PAT4_SEL_MASK | DP_TP_CTL_LINK_TRAIN_MASK,
+ DP_TP_CTL_TRAIN_PAT4_SEL_TP4A | DP_TP_CTL_LINK_TRAIN_PAT4);
+ break;
+ default:
+ drm_warn(&dev_priv->drm, "Invalid Phy Test Pattern\n");
+ }
+}
+
+static void intel_dp_process_phy_request(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ struct drm_dp_phy_test_params *data =
+ &intel_dp->compliance.test_data.phytest;
+ u8 link_status[DP_LINK_STATUS_SIZE];
+
+ if (drm_dp_dpcd_read_phy_link_status(&intel_dp->aux, DP_PHY_DPRX,
+ link_status) < 0) {
+ drm_dbg_kms(&i915->drm, "failed to get link status\n");
+ return;
+ }
+
+ /* retrieve vswing & pre-emphasis setting */
+ intel_dp_get_adjust_train(intel_dp, crtc_state, DP_PHY_DPRX,
+ link_status);
+
+ intel_dp_set_signal_levels(intel_dp, crtc_state, DP_PHY_DPRX);
+
+ intel_dp_phy_pattern_update(intel_dp, crtc_state);
+
+ drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET,
+ intel_dp->train_set, crtc_state->lane_count);
+
+ drm_dp_set_phy_test_pattern(&intel_dp->aux, data,
+ intel_dp->dpcd[DP_DPCD_REV]);
+}
+
+static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ struct drm_dp_phy_test_params *data =
+ &intel_dp->compliance.test_data.phytest;
+
+ if (drm_dp_get_phy_test_pattern(&intel_dp->aux, data)) {
+ drm_dbg_kms(&i915->drm, "DP Phy Test pattern AUX read failure\n");
+ return DP_TEST_NAK;
+ }
+
+ /* Set test active flag here so userspace doesn't interrupt things */
+ intel_dp->compliance.test_active = true;
+
+ return DP_TEST_ACK;
+}
+
+void intel_dp_handle_test_request(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ u8 response = DP_TEST_NAK;
+ u8 request = 0;
+ int status;
+
+ status = drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_REQUEST, &request);
+ if (status <= 0) {
+ drm_dbg_kms(&i915->drm,
+ "Could not read test request from sink\n");
+ goto update_status;
+ }
+
+ switch (request) {
+ case DP_TEST_LINK_TRAINING:
+ drm_dbg_kms(&i915->drm, "LINK_TRAINING test requested\n");
+ response = intel_dp_autotest_link_training(intel_dp);
+ break;
+ case DP_TEST_LINK_VIDEO_PATTERN:
+ drm_dbg_kms(&i915->drm, "TEST_PATTERN test requested\n");
+ response = intel_dp_autotest_video_pattern(intel_dp);
+ break;
+ case DP_TEST_LINK_EDID_READ:
+ drm_dbg_kms(&i915->drm, "EDID test requested\n");
+ response = intel_dp_autotest_edid(intel_dp);
+ break;
+ case DP_TEST_LINK_PHY_TEST_PATTERN:
+ drm_dbg_kms(&i915->drm, "PHY_PATTERN test requested\n");
+ response = intel_dp_autotest_phy_pattern(intel_dp);
+ break;
+ default:
+ drm_dbg_kms(&i915->drm, "Invalid test request '%02x'\n",
+ request);
+ break;
+ }
+
+ if (response & DP_TEST_ACK)
+ intel_dp->compliance.test_type = request;
+
+update_status:
+ status = drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, response);
+ if (status <= 0)
+ drm_dbg_kms(&i915->drm,
+ "Could not write test response to sink\n");
+}
+
+/* phy test */
+
+static int intel_dp_prep_phy_test(struct intel_dp *intel_dp,
+ struct drm_modeset_acquire_ctx *ctx,
+ u8 *pipe_mask)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ struct drm_connector_list_iter conn_iter;
+ struct intel_connector *connector;
+ int ret = 0;
+
+ *pipe_mask = 0;
+
+ drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+ for_each_intel_connector_iter(connector, &conn_iter) {
+ struct drm_connector_state *conn_state =
+ connector->base.state;
+ struct intel_crtc_state *crtc_state;
+ struct intel_crtc *crtc;
+
+ if (!intel_dp_has_connector(intel_dp, conn_state))
+ continue;
+
+ crtc = to_intel_crtc(conn_state->crtc);
+ if (!crtc)
+ continue;
+
+ ret = drm_modeset_lock(&crtc->base.mutex, ctx);
+ if (ret)
+ break;
+
+ crtc_state = to_intel_crtc_state(crtc->base.state);
+
+ drm_WARN_ON(&i915->drm, !intel_crtc_has_dp_encoder(crtc_state));
+
+ if (!crtc_state->hw.active)
+ continue;
+
+ if (conn_state->commit &&
+ !try_wait_for_completion(&conn_state->commit->hw_done))
+ continue;
+
+ *pipe_mask |= BIT(crtc->pipe);
+ }
+ drm_connector_list_iter_end(&conn_iter);
+
+ return ret;
+}
+
+static int intel_dp_do_phy_test(struct intel_encoder *encoder,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ struct intel_crtc *crtc;
+ u8 pipe_mask;
+ int ret;
+
+ ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
+ ctx);
+ if (ret)
+ return ret;
+
+ ret = intel_dp_prep_phy_test(intel_dp, ctx, &pipe_mask);
+ if (ret)
+ return ret;
+
+ if (pipe_mask == 0)
+ return 0;
+
+ drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s] PHY test\n",
+ encoder->base.base.id, encoder->base.name);
+
+ for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc, pipe_mask) {
+ const struct intel_crtc_state *crtc_state =
+ to_intel_crtc_state(crtc->base.state);
+
+ /* test on the MST master transcoder */
+ if (DISPLAY_VER(dev_priv) >= 12 &&
+ intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) &&
+ !intel_dp_mst_is_master_trans(crtc_state))
+ continue;
+
+ intel_dp_process_phy_request(intel_dp, crtc_state);
+ break;
+ }
+
+ return 0;
+}
+
+void intel_dp_phy_test(struct intel_encoder *encoder)
+{
+ struct drm_modeset_acquire_ctx ctx;
+ int ret;
+
+ drm_modeset_acquire_init(&ctx, 0);
+
+ for (;;) {
+ ret = intel_dp_do_phy_test(encoder, &ctx);
+
+ if (ret == -EDEADLK) {
+ drm_modeset_backoff(&ctx);
+ continue;
+ }
+
+ break;
+ }
+
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+ drm_WARN(encoder->base.dev, ret,
+ "Acquiring modeset locks failed with %i\n", ret);
+}
new file mode 100644
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: MIT */
+/* Copyright © 2024 Intel Corporation */
+
+#ifndef __INTEL_DP_TEST_H__
+#define __INTEL_DP_TEST_H__
+
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+struct link_config_limits;
+
+void intel_dp_handle_test_request(struct intel_dp *intel_dp);
+void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
+ struct intel_crtc_state *pipe_config,
+ struct link_config_limits *limits);
+void intel_dp_phy_test(struct intel_encoder *encoder);
+
+#endif /* __INTEL_DP_TEST_H__ */
@@ -221,6 +221,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
i915-display/intel_dp_hdcp.o \
i915-display/intel_dp_link_training.o \
i915-display/intel_dp_mst.o \
+ i915-display/intel_dp_test.o \
i915-display/intel_dpll.o \
i915-display/intel_dpll_mgr.o \
i915-display/intel_dpt_common.o \
intel_dp.c has become huge, over 7k lines. Split out the fairly well isolated chunk of DP test code to a dedicated file intel_dp_test.[ch]. Signed-off-by: Jani Nikula <jani.nikula@intel.com> --- drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/display/g4x_dp.c | 1 + drivers/gpu/drm/i915/display/intel_ddi.c | 1 + drivers/gpu/drm/i915/display/intel_dp.c | 489 +----------------- drivers/gpu/drm/i915/display/intel_dp.h | 9 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 +- drivers/gpu/drm/i915/display/intel_dp_test.c | 499 +++++++++++++++++++ drivers/gpu/drm/i915/display/intel_dp_test.h | 18 + drivers/gpu/drm/xe/Makefile | 1 + 9 files changed, 533 insertions(+), 489 deletions(-) create mode 100644 drivers/gpu/drm/i915/display/intel_dp_test.c create mode 100644 drivers/gpu/drm/i915/display/intel_dp_test.h