From: Paulo Zanoni <paulo.r.zanoni at intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/intel_ddi.c | 44 +++++++++++++++++++++++++++++++++-------
drivers/gpu/drm/i915/intel_dp.c | 28 +++++++++++++++----------
drivers/gpu/drm/i915/intel_drv.h | 1 +
3 files changed, 55 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index fed7856..23ec6a2 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -891,16 +891,46 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
{
struct drm_crtc *crtc = encoder->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
- int port = intel_hdmi->ddi_port;
+ struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+ struct intel_hdmi *intel_hdmi = NULL;
+ struct intel_dp *intel_dp = NULL;
+ int port;
int pipe = intel_crtc->pipe;
- /* On Haswell, we need to enable the clocks and prepare DDI function to
- * work in HDMI mode for this pipe.
- */
- DRM_DEBUG_KMS("Preparing HDMI DDI mode for Haswell on port %c, pipe %c\n", port_name(port), pipe_name(pipe));
+ if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
+ intel_hdmi = enc_to_intel_hdmi(encoder);
+ port = intel_hdmi->ddi_port;
+ } else {
+ intel_dp = enc_to_intel_dp(encoder);
+ port = intel_dp->port;
+ }
+
+ DRM_DEBUG_KMS("Preparing DDI mode for Haswell on port %c, pipe %c\n",
+ port_name(port), pipe_name(pipe));
+
+ if (intel_encoder->type != INTEL_OUTPUT_HDMI) {
+ intel_dp->DP = DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW;
+ switch (intel_dp->lane_count) {
+ case 1:
+ intel_dp->DP |= DDI_PORT_WIDTH_X1;
+ break;
+ case 2:
+ intel_dp->DP |= DDI_PORT_WIDTH_X2;
+ break;
+ case 4:
+ intel_dp->DP |= DDI_PORT_WIDTH_X4;
+ break;
+ default:
+ intel_dp->DP |= DDI_PORT_WIDTH_X4;
+ WARN(1, "Unexpected DP lane count %d\n",
+ intel_dp->lane_count);
+ break;
+ }
+
+ intel_dp_init_link_config(intel_dp);
+ }
- intel_ddi_enable_pipe(&intel_hdmi->base, adjusted_mode);
+ intel_ddi_enable_pipe(intel_encoder, adjusted_mode);
}
static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 31d6e78..4cd85f7 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -806,6 +806,21 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
static void ironlake_edp_pll_on(struct drm_encoder *encoder);
static void ironlake_edp_pll_off(struct drm_encoder *encoder);
+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)
@@ -868,17 +883,8 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *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 */
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 52c7547..1b9c549 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -382,6 +382,7 @@ extern void intel_dp_init(struct drm_device *dev, int output_reg,
void
intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
+extern void intel_dp_init_link_config(struct intel_dp *intel_dp);
extern bool intel_dpd_is_edp(struct drm_device *dev);
extern void intel_edp_link_config(struct intel_encoder *, int *, int *);
extern int intel_edp_target_clock(struct intel_encoder *,
--
1.7.11.2
