return is_edp(intel_dp) && !is_pch_edp(intel_dp);
}
-static struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
-{
- return container_of(encoder, struct intel_dp, base.base);
-}
-
static struct intel_dp *intel_attached_dp(struct drm_connector *connector)
{
return container_of(intel_attached_encoder(connector),
return is_pch_edp(intel_dp);
}
-static void intel_dp_start_link_train(struct intel_dp *intel_dp);
-static void intel_dp_complete_link_train(struct intel_dp *intel_dp);
static void intel_dp_link_down(struct intel_dp *intel_dp);
void
uint32_t aux_clock_divider;
int try, precharge;
+ if (IS_HASWELL(dev)) {
+ switch (intel_dp->port) {
+ case PORT_A:
+ ch_ctl = DPA_AUX_CH_CTL;
+ ch_data = DPA_AUX_CH_DATA1;
+ break;
+ case PORT_B:
+ ch_ctl = PCH_DPB_AUX_CH_CTL;
+ ch_data = PCH_DPB_AUX_CH_DATA1;
+ break;
+ case PORT_C:
+ ch_ctl = PCH_DPC_AUX_CH_CTL;
+ ch_data = PCH_DPC_AUX_CH_DATA1;
+ break;
+ case PORT_D:
+ ch_ctl = PCH_DPD_AUX_CH_CTL;
+ ch_data = PCH_DPD_AUX_CH_DATA1;
+ break;
+ default:
+ BUG();
+ }
+ }
+
intel_dp_check_edp(intel_dp);
/* The clock divider is based off the hrawclk,
* and would like to run at 2MHz. So, take the
intel_dp_compute_m_n(intel_crtc->bpp, lane_count,
mode->clock, adjusted_mode->clock, &m_n);
- if (HAS_PCH_SPLIT(dev)) {
- I915_WRITE(TRANSDATA_M1(pipe),
- ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) |
- m_n.gmch_m);
+ if (IS_HASWELL(dev)) {
+ I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
+ I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
+ I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
+ I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
+ } else if (HAS_PCH_SPLIT(dev)) {
+ I915_WRITE(TRANSDATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
I915_WRITE(TRANSDATA_N1(pipe), m_n.gmch_n);
I915_WRITE(TRANSDPLINK_M1(pipe), m_n.link_m);
I915_WRITE(TRANSDPLINK_N1(pipe), m_n.link_n);
I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
} else {
I915_WRITE(PIPE_GMCH_DATA_M(pipe),
- ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) |
- m_n.gmch_m);
+ TU_SIZE(m_n.tu) | m_n.gmch_m);
I915_WRITE(PIPE_GMCH_DATA_N(pipe), m_n.gmch_n);
I915_WRITE(PIPE_DP_LINK_M(pipe), m_n.link_m);
I915_WRITE(PIPE_DP_LINK_N(pipe), m_n.link_n);
}
}
+void intel_dp_init_link_config(struct intel_dp *intel_dp)
+{
+ memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE);
+ intel_dp->link_configuration[0] = intel_dp->link_bw;
+ intel_dp->link_configuration[1] = intel_dp->lane_count;
+ intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B;
+ /*
+ * Check for DPCD version > 1.1 and enhanced framing support
+ */
+ if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 &&
+ (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) {
+ intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
+ }
+}
+
static void
intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
intel_write_eld(encoder, adjusted_mode);
}
- memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE);
- intel_dp->link_configuration[0] = intel_dp->link_bw;
- intel_dp->link_configuration[1] = intel_dp->lane_count;
- intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B;
- /*
- * Check for DPCD version > 1.1 and enhanced framing support
- */
- if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 &&
- (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) {
- intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
- }
+
+ intel_dp_init_link_config(intel_dp);
/* Split out the IBX/CPU vs CPT settings */
}
/* If the sink supports it, try to set the power state appropriately */
-static void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode)
+void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode)
{
int ret, i;
{
struct drm_device *dev = intel_dp->base.base.dev;
- if (IS_GEN7(dev) && is_cpu_edp(intel_dp) && !IS_VALLEYVIEW(dev)) {
+ if (IS_HASWELL(dev)) {
+ switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_400:
+ return DP_TRAIN_PRE_EMPHASIS_9_5;
+ case DP_TRAIN_VOLTAGE_SWING_600:
+ return DP_TRAIN_PRE_EMPHASIS_6;
+ case DP_TRAIN_VOLTAGE_SWING_800:
+ return DP_TRAIN_PRE_EMPHASIS_3_5;
+ case DP_TRAIN_VOLTAGE_SWING_1200:
+ default:
+ return DP_TRAIN_PRE_EMPHASIS_0;
+ }
+ } else if (IS_GEN7(dev) && is_cpu_edp(intel_dp) && !IS_VALLEYVIEW(dev)) {
switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
case DP_TRAIN_VOLTAGE_SWING_400:
return DP_TRAIN_PRE_EMPHASIS_6;
}
}
+/* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */
+static uint32_t
+intel_dp_signal_levels_hsw(uint8_t train_set)
+{
+ int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+ DP_TRAIN_PRE_EMPHASIS_MASK);
+ switch (signal_levels) {
+ case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0:
+ return DDI_BUF_EMP_400MV_0DB_HSW;
+ case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5:
+ return DDI_BUF_EMP_400MV_3_5DB_HSW;
+ case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6:
+ return DDI_BUF_EMP_400MV_6DB_HSW;
+ case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5:
+ return DDI_BUF_EMP_400MV_9_5DB_HSW;
+
+ case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0:
+ return DDI_BUF_EMP_600MV_0DB_HSW;
+ case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5:
+ return DDI_BUF_EMP_600MV_3_5DB_HSW;
+ case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6:
+ return DDI_BUF_EMP_600MV_6DB_HSW;
+
+ case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0:
+ return DDI_BUF_EMP_800MV_0DB_HSW;
+ case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5:
+ return DDI_BUF_EMP_800MV_3_5DB_HSW;
+ default:
+ DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:"
+ "0x%x\n", signal_levels);
+ return DDI_BUF_EMP_400MV_0DB_HSW;
+ }
+}
+
static uint8_t
intel_get_lane_status(uint8_t link_status[DP_LINK_STATUS_SIZE],
int lane)
struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
+ uint32_t temp;
- if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || !is_cpu_edp(intel_dp))) {
+ if (IS_HASWELL(dev)) {
+ temp = I915_READ(DP_TP_CTL(intel_dp->port));
+
+ if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE)
+ temp |= DP_TP_CTL_SCRAMBLE_DISABLE;
+ else
+ temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE;
+
+ temp &= ~DP_TP_CTL_LINK_TRAIN_MASK;
+ switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) {
+ case DP_TRAINING_PATTERN_DISABLE:
+ temp |= DP_TP_CTL_LINK_TRAIN_IDLE;
+ I915_WRITE(DP_TP_CTL(intel_dp->port), temp);
+
+ if (wait_for((I915_READ(DP_TP_STATUS(intel_dp->port)) &
+ DP_TP_STATUS_IDLE_DONE), 1))
+ DRM_ERROR("Timed out waiting for DP idle patterns\n");
+
+ temp &= ~DP_TP_CTL_LINK_TRAIN_MASK;
+ temp |= DP_TP_CTL_LINK_TRAIN_NORMAL;
+
+ break;
+ case DP_TRAINING_PATTERN_1:
+ temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
+ break;
+ case DP_TRAINING_PATTERN_2:
+ temp |= DP_TP_CTL_LINK_TRAIN_PAT2;
+ break;
+ case DP_TRAINING_PATTERN_3:
+ temp |= DP_TP_CTL_LINK_TRAIN_PAT3;
+ break;
+ }
+ I915_WRITE(DP_TP_CTL(intel_dp->port), temp);
+
+ } else if (HAS_PCH_CPT(dev) &&
+ (IS_GEN7(dev) || !is_cpu_edp(intel_dp))) {
dp_reg_value &= ~DP_LINK_TRAIN_MASK_CPT;
switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) {
}
/* Enable corresponding port and start training pattern 1 */
-static void
+void
intel_dp_start_link_train(struct intel_dp *intel_dp)
{
- struct drm_device *dev = intel_dp->base.base.dev;
+ struct drm_encoder *encoder = &intel_dp->base.base;
+ struct drm_device *dev = encoder->dev;
int i;
uint8_t voltage;
bool clock_recovery = false;
int voltage_tries, loop_tries;
uint32_t DP = intel_dp->DP;
+ if (IS_HASWELL(dev))
+ intel_ddi_prepare_link_retrain(encoder);
+
/* Write the link configuration data */
intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET,
intel_dp->link_configuration,
uint8_t link_status[DP_LINK_STATUS_SIZE];
uint32_t signal_levels;
-
- if (IS_GEN7(dev) && is_cpu_edp(intel_dp) && !IS_VALLEYVIEW(dev)) {
+ if (IS_HASWELL(dev)) {
+ signal_levels = intel_dp_signal_levels_hsw(
+ intel_dp->train_set[0]);
+ DP = (DP & ~DDI_BUF_EMP_MASK) | signal_levels;
+ } else if (IS_GEN7(dev) && is_cpu_edp(intel_dp) && !IS_VALLEYVIEW(dev)) {
signal_levels = intel_gen7_edp_signal_levels(intel_dp->train_set[0]);
DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB) | signal_levels;
} else if (IS_GEN6(dev) && is_cpu_edp(intel_dp)) {
DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels;
} else {
signal_levels = intel_dp_signal_levels(intel_dp->train_set[0]);
- DRM_DEBUG_KMS("training pattern 1 signal levels %08x\n", signal_levels);
DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels;
}
+ DRM_DEBUG_KMS("training pattern 1 signal levels %08x\n",
+ signal_levels);
if (!intel_dp_set_link_train(intel_dp, DP,
DP_TRAINING_PATTERN_1 |
intel_dp->DP = DP;
}
-static void
+void
intel_dp_complete_link_train(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp->base.base.dev;
break;
}
- if (IS_GEN7(dev) && is_cpu_edp(intel_dp) && !IS_VALLEYVIEW(dev)) {
+ if (IS_HASWELL(dev)) {
+ signal_levels = intel_dp_signal_levels_hsw(intel_dp->train_set[0]);
+ DP = (DP & ~DDI_BUF_EMP_MASK) | signal_levels;
+ } else if (IS_GEN7(dev) && is_cpu_edp(intel_dp) && !IS_VALLEYVIEW(dev)) {
signal_levels = intel_gen7_edp_signal_levels(intel_dp->train_set[0]);
DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB) | signal_levels;
} else if (IS_GEN6(dev) && is_cpu_edp(intel_dp)) {
++tries;
}
+ if (channel_eq)
+ DRM_DEBUG_KMS("Channel EQ done. DP Training successfull\n");
+
intel_dp_set_link_train(intel_dp, DP, DP_TRAINING_PATTERN_DISABLE);
}
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t DP = intel_dp->DP;
+ /*
+ * DDI code has a strict mode set sequence and we should try to respect
+ * it, otherwise we might hang the machine in many different ways. So we
+ * really should be disabling the port only on a complete crtc_disable
+ * sequence. This function is just called under two conditions on DDI
+ * code:
+ * - Link train failed while doing crtc_enable, and on this case we
+ * really should respect the mode set sequence and wait for a
+ * crtc_disable.
+ * - Someone turned the monitor off and intel_dp_check_link_status
+ * called us. We don't need to disable the whole port on this case, so
+ * when someone turns the monitor on again,
+ * intel_ddi_prepare_link_retrain will take care of redoing the link
+ * train.
+ */
+ if (IS_HASWELL(dev))
+ return;
+
if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0))
return;
projects / deliverable / linux.git / blobdiff