diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 71 |
1 files changed, 62 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 49b54f05d3c..6094e42e8c9 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -43,6 +43,7 @@ #define DP_LINK_CONFIGURATION_SIZE 9 #define IS_eDP(i) ((i)->type == INTEL_OUTPUT_EDP) +#define IS_PCH_eDP(dp_priv) ((dp_priv)->has_edp) struct intel_dp_priv { uint32_t output_reg; @@ -56,6 +57,7 @@ struct intel_dp_priv { struct intel_encoder *intel_encoder; struct i2c_adapter adapter; struct i2c_algo_dp_aux_data algo; + bool has_edp; }; static void @@ -128,8 +130,9 @@ intel_dp_link_required(struct drm_device *dev, struct intel_encoder *intel_encoder, int pixel_clock) { struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; - if (IS_eDP(intel_encoder)) + if (IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) return (pixel_clock * dev_priv->edp_bpp) / 8; else return pixel_clock * 3; @@ -542,14 +545,14 @@ intel_reduce_ratio(uint32_t *num, uint32_t *den) } static void -intel_dp_compute_m_n(int bytes_per_pixel, +intel_dp_compute_m_n(int bpp, int nlanes, int pixel_clock, int link_clock, struct intel_dp_m_n *m_n) { m_n->tu = 64; - m_n->gmch_m = pixel_clock * bytes_per_pixel; + m_n->gmch_m = (pixel_clock * bpp) >> 3; m_n->gmch_n = link_clock * nlanes; intel_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); m_n->link_m = pixel_clock; @@ -557,6 +560,28 @@ intel_dp_compute_m_n(int bytes_per_pixel, intel_reduce_ratio(&m_n->link_m, &m_n->link_n); } +bool intel_pch_has_edp(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct drm_mode_config *mode_config = &dev->mode_config; + struct drm_encoder *encoder; + + list_for_each_entry(encoder, &mode_config->encoder_list, head) { + struct intel_encoder *intel_encoder; + struct intel_dp_priv *dp_priv; + + if (!encoder || encoder->crtc != crtc) + continue; + + intel_encoder = enc_to_intel_encoder(encoder); + dp_priv = intel_encoder->dev_priv; + + if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) + return dp_priv->has_edp; + } + return false; +} + void intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) @@ -566,7 +591,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_encoder *encoder; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - int lane_count = 4; + int lane_count = 4, bpp = 24; struct intel_dp_m_n m_n; /* @@ -584,6 +609,8 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) { lane_count = dp_priv->lane_count; + if (IS_PCH_eDP(dp_priv)) + bpp = dev_priv->edp_bpp; break; } } @@ -593,7 +620,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, * the number of bytes_per_pixel post-LUT, which we always * set up for 8-bits of R/G/B, or 3 bytes total. */ - intel_dp_compute_m_n(3, lane_count, + intel_dp_compute_m_n(bpp, lane_count, mode->clock, adjusted_mode->clock, &m_n); if (HAS_PCH_SPLIT(dev)) { @@ -730,13 +757,13 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode) if (mode != DRM_MODE_DPMS_ON) { if (dp_reg & DP_PORT_EN) { intel_dp_link_down(intel_encoder, dp_priv->DP); - if (IS_eDP(intel_encoder)) + if (IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) ironlake_edp_backlight_off(dev); } } else { if (!(dp_reg & DP_PORT_EN)) { intel_dp_link_train(intel_encoder, dp_priv->DP, dp_priv->link_configuration); - if (IS_eDP(intel_encoder)) + if (IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) ironlake_edp_backlight_on(dev); } } @@ -1270,6 +1297,7 @@ static int intel_dp_get_modes(struct drm_connector *connector) struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); struct drm_device *dev = intel_encoder->enc.dev; struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; int ret; /* We should parse the EDID data and find out if it has an audio sink @@ -1280,7 +1308,7 @@ static int intel_dp_get_modes(struct drm_connector *connector) return ret; /* if eDP has no EDID, try to use fixed panel mode from VBT */ - if (IS_eDP(intel_encoder)) { + if (IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) { if (dev_priv->panel_fixed_mode != NULL) { struct drm_display_mode *mode; mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); @@ -1365,6 +1393,26 @@ intel_trans_dp_port_sel (struct drm_crtc *crtc) return -1; } +/* check the VBT to see whether the eDP is on DP-D port */ +static bool intel_dpd_is_edp(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct child_device_config *p_child; + int i; + + if (!dev_priv->child_dev_num) + return false; + + for (i = 0; i < dev_priv->child_dev_num; i++) { + p_child = dev_priv->child_dev + i; + + if (p_child->dvo_port == PORT_IDPD && + p_child->device_type == DEVICE_TYPE_eDP) + return true; + } + return false; +} + void intel_dp_init(struct drm_device *dev, int output_reg) { @@ -1410,6 +1458,11 @@ intel_dp_init(struct drm_device *dev, int output_reg) if (IS_eDP(intel_encoder)) intel_encoder->clone_mask = (1 << INTEL_EDP_CLONE_BIT); + if (HAS_PCH_SPLIT(dev) && (output_reg == PCH_DP_D)) { + if (intel_dpd_is_edp(dev)) + dp_priv->has_edp = true; + } + intel_encoder->crtc_mask = (1 << 0) | (1 << 1); connector->interlace_allowed = true; connector->doublescan_allowed = 0; @@ -1458,7 +1511,7 @@ intel_dp_init(struct drm_device *dev, int output_reg) intel_encoder->ddc_bus = &dp_priv->adapter; intel_encoder->hot_plug = intel_dp_hot_plug; - if (output_reg == DP_A) { + if (output_reg == DP_A || IS_PCH_eDP(dp_priv)) { /* initialize panel mode from VBT if available for eDP */ if (dev_priv->lfp_lvds_vbt_mode) { dev_priv->panel_fixed_mode = |