From cfcb0fc9c2f2decf065e9a6a1c622541e8b4090b Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 7 Oct 2010 16:01:06 -0700 Subject: [PATCH] drm/i915/dp: convert eDP checks to functions and document Most of the PCH eDP checks are redundant, so document the functions in preparation for removing most of the calls. Signed-off-by: Jesse Barnes Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/intel_dp.c | 92 ++++++++++++++++++++------------- 1 file changed, 57 insertions(+), 35 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 152d94507b79..f2810ade343c 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -42,9 +42,6 @@ #define DP_LINK_CONFIGURATION_SIZE 9 -#define IS_eDP(i) ((i)->base.type == INTEL_OUTPUT_EDP) -#define IS_PCH_eDP(i) ((i)->is_pch_edp) - struct intel_dp { struct intel_encoder base; uint32_t output_reg; @@ -62,6 +59,31 @@ struct intel_dp { uint8_t link_status[DP_LINK_STATUS_SIZE]; }; +/** + * is_edp - is the given port attached to an eDP panel (either CPU or PCH) + * @intel_dp: DP struct + * + * If a CPU or PCH DP output is attached to an eDP panel, this function + * will return true, and false otherwise. + */ +static bool is_edp(struct intel_dp *intel_dp) +{ + return intel_dp->base.type == INTEL_OUTPUT_EDP; +} + +/** + * is_pch_edp - is the port on the PCH and attached to an eDP panel? + * @intel_dp: DP struct + * + * Returns true if the given DP struct corresponds to a PCH DP port attached + * to an eDP panel, false otherwise. Helpful for determining whether we + * may need FDI resources for a given DP output or not. + */ +static bool is_pch_edp(struct intel_dp *intel_dp) +{ + return intel_dp->is_pch_edp; +} + static struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder) { return container_of(encoder, struct intel_dp, base.base); @@ -138,7 +160,7 @@ intel_dp_link_required(struct drm_device *dev, struct intel_dp *intel_dp, int pi { struct drm_i915_private *dev_priv = dev->dev_private; - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) return (pixel_clock * dev_priv->edp.bpp + 7) / 8; else return pixel_clock * 3; @@ -160,7 +182,7 @@ intel_dp_mode_valid(struct drm_connector *connector, int max_link_clock = intel_dp_link_clock(intel_dp_max_link_bw(intel_dp)); int max_lanes = intel_dp_max_lane_count(intel_dp); - if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) && + if ((is_edp(intel_dp) || is_pch_edp(intel_dp)) && dev_priv->panel_fixed_mode) { if (mode->hdisplay > dev_priv->panel_fixed_mode->hdisplay) return MODE_PANEL; @@ -171,7 +193,7 @@ intel_dp_mode_valid(struct drm_connector *connector, /* only refuse the mode on non eDP since we have seen some wierd eDP panels which are outside spec tolerances but somehow work by magic */ - if (!IS_eDP(intel_dp) && + if (!is_edp(intel_dp) && (intel_dp_link_required(connector->dev, intel_dp, mode->clock) > intel_dp_max_data_rate(max_link_clock, max_lanes))) return MODE_CLOCK_HIGH; @@ -258,7 +280,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, * Note that PCH attached eDP panels should use a 125MHz input * clock divider. */ - if (IS_eDP(intel_dp) && !IS_PCH_eDP(intel_dp)) { + if (is_edp(intel_dp) && !is_pch_edp(intel_dp)) { if (IS_GEN6(dev)) aux_clock_divider = 200; /* SNB eDP input clock at 400Mhz */ else @@ -530,7 +552,7 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode, int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0; static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; - if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) && + if ((is_edp(intel_dp) || is_pch_edp(intel_dp)) && dev_priv->panel_fixed_mode) { intel_fixed_panel_mode(dev_priv->panel_fixed_mode, adjusted_mode); intel_pch_panel_fitting(dev, DRM_MODE_SCALE_FULLSCREEN, @@ -560,7 +582,7 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode, } } - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) { + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) { /* okay we failed just pick the highest */ intel_dp->lane_count = max_lane_count; intel_dp->link_bw = bws[max_clock]; @@ -652,7 +674,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, intel_dp = enc_to_intel_dp(encoder); if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT) { lane_count = intel_dp->lane_count; - if (IS_PCH_eDP(intel_dp)) + if (is_pch_edp(intel_dp)) bpp = dev_priv->edp.bpp; break; } @@ -720,7 +742,7 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) intel_dp->DP |= DP_SYNC_VS_HIGH; - if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) + if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; else intel_dp->DP |= DP_LINK_TRAIN_OFF; @@ -755,7 +777,7 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, if (intel_crtc->pipe == 1 && !HAS_PCH_CPT(dev)) intel_dp->DP |= DP_PIPEB_SELECT; - if (IS_eDP(intel_dp)) { + if (is_edp(intel_dp)) { /* don't miss out required setting for eDP */ intel_dp->DP |= DP_PLL_ENABLE; if (adjusted_mode->clock < 200000) @@ -909,7 +931,7 @@ static void intel_dp_prepare(struct drm_encoder *encoder) struct drm_i915_private *dev_priv = dev->dev_private; uint32_t dp_reg = I915_READ(intel_dp->output_reg); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) { + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) { ironlake_edp_panel_off(dev); ironlake_edp_backlight_off(dev); ironlake_edp_panel_vdd_on(dev); @@ -926,12 +948,12 @@ static void intel_dp_commit(struct drm_encoder *encoder) intel_dp_start_link_train(intel_dp); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_panel_on(dev); intel_dp_complete_link_train(intel_dp); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_backlight_on(dev); intel_dp->dpms_mode = DRM_MODE_DPMS_ON; } @@ -945,21 +967,21 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode) uint32_t dp_reg = I915_READ(intel_dp->output_reg); if (mode != DRM_MODE_DPMS_ON) { - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) { + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) { ironlake_edp_backlight_off(dev); ironlake_edp_panel_off(dev); } if (dp_reg & DP_PORT_EN) intel_dp_link_down(intel_dp); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_pll_off(encoder); } else { if (!(dp_reg & DP_PORT_EN)) { intel_dp_start_link_train(intel_dp); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_panel_on(dev); intel_dp_complete_link_train(intel_dp); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_backlight_on(dev); } } @@ -1234,7 +1256,7 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) DP_LINK_CONFIGURATION_SIZE); DP |= DP_PORT_EN; - if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) + if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) DP &= ~DP_LINK_TRAIN_MASK_CPT; else DP &= ~DP_LINK_TRAIN_MASK; @@ -1245,7 +1267,7 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) for (;;) { /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ uint32_t signal_levels; - if (IS_GEN6(dev) && IS_eDP(intel_dp)) { + if (IS_GEN6(dev) && is_edp(intel_dp)) { signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]); DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; } else { @@ -1253,7 +1275,7 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; } - if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) + if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) reg = DP | DP_LINK_TRAIN_PAT_1_CPT; else reg = DP | DP_LINK_TRAIN_PAT_1; @@ -1312,7 +1334,7 @@ intel_dp_complete_link_train(struct intel_dp *intel_dp) /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ uint32_t signal_levels; - if (IS_GEN6(dev) && IS_eDP(intel_dp)) { + if (IS_GEN6(dev) && is_edp(intel_dp)) { signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]); DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; } else { @@ -1320,7 +1342,7 @@ intel_dp_complete_link_train(struct intel_dp *intel_dp) DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; } - if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) + if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) reg = DP | DP_LINK_TRAIN_PAT_2_CPT; else reg = DP | DP_LINK_TRAIN_PAT_2; @@ -1348,7 +1370,7 @@ intel_dp_complete_link_train(struct intel_dp *intel_dp) ++tries; } - if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) + if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) reg = DP | DP_LINK_TRAIN_OFF_CPT; else reg = DP | DP_LINK_TRAIN_OFF; @@ -1368,14 +1390,14 @@ intel_dp_link_down(struct intel_dp *intel_dp) DRM_DEBUG_KMS("\n"); - if (IS_eDP(intel_dp)) { + if (is_edp(intel_dp)) { DP &= ~DP_PLL_ENABLE; I915_WRITE(intel_dp->output_reg, DP); POSTING_READ(intel_dp->output_reg); udelay(100); } - if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) { + if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) { DP &= ~DP_LINK_TRAIN_MASK_CPT; I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); } else { @@ -1386,7 +1408,7 @@ intel_dp_link_down(struct intel_dp *intel_dp) msleep(17); - if (IS_eDP(intel_dp)) + if (is_edp(intel_dp)) DP |= DP_LINK_TRAIN_OFF; I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); POSTING_READ(intel_dp->output_reg); @@ -1425,7 +1447,7 @@ ironlake_dp_detect(struct drm_connector *connector) enum drm_connector_status status; /* Panel needs power for AUX to work */ - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_panel_vdd_on(connector->dev); status = connector_status_disconnected; if (intel_dp_aux_native_read(intel_dp, @@ -1437,7 +1459,7 @@ ironlake_dp_detect(struct drm_connector *connector) } DRM_DEBUG_KMS("DPCD: %hx%hx%hx%hx\n", intel_dp->dpcd[0], intel_dp->dpcd[1], intel_dp->dpcd[2], intel_dp->dpcd[3]); - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) ironlake_edp_panel_vdd_off(connector->dev); return status; } @@ -1504,7 +1526,7 @@ static int intel_dp_get_modes(struct drm_connector *connector) ret = intel_ddc_get_modes(connector, &intel_dp->adapter); if (ret) { - if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) && + if ((is_edp(intel_dp) || is_pch_edp(intel_dp)) && !dev_priv->panel_fixed_mode) { struct drm_display_mode *newmode; list_for_each_entry(newmode, &connector->probed_modes, @@ -1521,7 +1543,7 @@ static int intel_dp_get_modes(struct drm_connector *connector) } /* if eDP has no EDID, try to use fixed panel mode from VBT */ - if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) { + if (is_edp(intel_dp) || is_pch_edp(intel_dp)) { if (dev_priv->panel_fixed_mode != NULL) { struct drm_display_mode *mode; mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); @@ -1651,7 +1673,7 @@ intel_dp_init(struct drm_device *dev, int output_reg) if (intel_dpd_is_edp(dev)) intel_dp->is_pch_edp = true; - if (output_reg == DP_A || IS_PCH_eDP(intel_dp)) { + if (output_reg == DP_A || is_pch_edp(intel_dp)) { type = DRM_MODE_CONNECTOR_eDP; intel_encoder->type = INTEL_OUTPUT_EDP; } else { @@ -1672,7 +1694,7 @@ intel_dp_init(struct drm_device *dev, int output_reg) else if (output_reg == DP_D || output_reg == PCH_DP_D) intel_encoder->clone_mask = (1 << INTEL_DP_D_CLONE_BIT); - if (IS_eDP(intel_dp)) + if (is_edp(intel_dp)) intel_encoder->clone_mask = (1 << INTEL_EDP_CLONE_BIT); intel_encoder->crtc_mask = (1 << 0) | (1 << 1); @@ -1719,7 +1741,7 @@ intel_dp_init(struct drm_device *dev, int output_reg) intel_encoder->hot_plug = intel_dp_hot_plug; - if (output_reg == DP_A || IS_PCH_eDP(intel_dp)) { + if (output_reg == DP_A || is_pch_edp(intel_dp)) { /* initialize panel mode from VBT if available for eDP */ if (dev_priv->lfp_lvds_vbt_mode) { dev_priv->panel_fixed_mode = -- 2.34.1