/* * Copyright © 2006-2010 Intel Corporation * Copyright (c) 2006 Dave Airlie * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: * Eric Anholt * Dave Airlie * Jesse Barnes * Chris Wilson */ #include #include #include "intel_backlight.h" #include "intel_connector.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_drrs.h" #include "intel_panel.h" bool intel_panel_use_ssc(struct drm_i915_private *i915) { if (i915->params.panel_use_ssc >= 0) return i915->params.panel_use_ssc != 0; return i915->vbt.lvds_use_ssc && !(i915->quirks & QUIRK_LVDS_SSC_DISABLE); } const struct drm_display_mode * intel_panel_preferred_fixed_mode(struct intel_connector *connector) { return list_first_entry_or_null(&connector->panel.fixed_modes, struct drm_display_mode, head); } const struct drm_display_mode * intel_panel_fixed_mode(struct intel_connector *connector, const struct drm_display_mode *mode) { const struct drm_display_mode *fixed_mode, *best_mode = NULL; int vrefresh = drm_mode_vrefresh(mode); /* pick the fixed_mode that is closest in terms of vrefresh */ list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) { if (!best_mode || abs(drm_mode_vrefresh(fixed_mode) - vrefresh) < abs(drm_mode_vrefresh(best_mode) - vrefresh)) best_mode = fixed_mode; } return best_mode; } static bool is_alt_drrs_mode(const struct drm_display_mode *mode, const struct drm_display_mode *preferred_mode) { return drm_mode_match(mode, preferred_mode, DRM_MODE_MATCH_TIMINGS | DRM_MODE_MATCH_FLAGS | DRM_MODE_MATCH_3D_FLAGS) && mode->clock != preferred_mode->clock; } static bool is_alt_vrr_mode(const struct drm_display_mode *mode, const struct drm_display_mode *preferred_mode) { return drm_mode_match(mode, preferred_mode, DRM_MODE_MATCH_FLAGS | DRM_MODE_MATCH_3D_FLAGS) && mode->hdisplay == preferred_mode->hdisplay && mode->vdisplay == preferred_mode->vdisplay && mode->clock != preferred_mode->clock; } const struct drm_display_mode * intel_panel_downclock_mode(struct intel_connector *connector, const struct drm_display_mode *adjusted_mode) { const struct drm_display_mode *fixed_mode, *best_mode = NULL; int min_vrefresh = connector->panel.vbt.seamless_drrs_min_refresh_rate; int max_vrefresh = drm_mode_vrefresh(adjusted_mode); /* pick the fixed_mode with the lowest refresh rate */ list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) { int vrefresh = drm_mode_vrefresh(fixed_mode); if (is_alt_drrs_mode(fixed_mode, adjusted_mode) && vrefresh >= min_vrefresh && vrefresh < max_vrefresh) { max_vrefresh = vrefresh; best_mode = fixed_mode; } } return best_mode; } int intel_panel_get_modes(struct intel_connector *connector) { const struct drm_display_mode *fixed_mode; int num_modes = 0; list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) { struct drm_display_mode *mode; mode = drm_mode_duplicate(connector->base.dev, fixed_mode); if (mode) { drm_mode_probed_add(&connector->base, mode); num_modes++; } } return num_modes; } enum drrs_type intel_panel_drrs_type(struct intel_connector *connector) { if (list_empty(&connector->panel.fixed_modes) || list_is_singular(&connector->panel.fixed_modes)) return DRRS_TYPE_NONE; return connector->panel.vbt.drrs_type; } int intel_panel_compute_config(struct intel_connector *connector, struct drm_display_mode *adjusted_mode) { const struct drm_display_mode *fixed_mode = intel_panel_fixed_mode(connector, adjusted_mode); if (!fixed_mode) return 0; /* * We don't want to lie too much to the user about the refresh * rate they're going to get. But we have to allow a bit of latitude * for Xorg since it likes to automagically cook up modes with slightly * off refresh rates. */ if (abs(drm_mode_vrefresh(adjusted_mode) - drm_mode_vrefresh(fixed_mode)) > 1) { drm_dbg_kms(connector->base.dev, "[CONNECTOR:%d:%s] Requested mode vrefresh (%d Hz) does not match fixed mode vrefresh (%d Hz)\n", connector->base.base.id, connector->base.name, drm_mode_vrefresh(adjusted_mode), drm_mode_vrefresh(fixed_mode)); return -EINVAL; } drm_mode_copy(adjusted_mode, fixed_mode); drm_mode_set_crtcinfo(adjusted_mode, 0); return 0; } static bool is_alt_fixed_mode(const struct drm_display_mode *mode, const struct drm_display_mode *preferred_mode, bool has_vrr) { /* is_alt_drrs_mode() is a subset of is_alt_vrr_mode() */ if (has_vrr) return is_alt_vrr_mode(mode, preferred_mode); else return is_alt_drrs_mode(mode, preferred_mode); } static void intel_panel_add_edid_alt_fixed_modes(struct intel_connector *connector, bool has_vrr) { struct drm_i915_private *dev_priv = to_i915(connector->base.dev); const struct drm_display_mode *preferred_mode = intel_panel_preferred_fixed_mode(connector); struct drm_display_mode *mode, *next; list_for_each_entry_safe(mode, next, &connector->base.probed_modes, head) { if (!is_alt_fixed_mode(mode, preferred_mode, has_vrr)) continue; drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s] using alternate EDID fixed mode: " DRM_MODE_FMT "\n", connector->base.base.id, connector->base.name, DRM_MODE_ARG(mode)); list_move_tail(&mode->head, &connector->panel.fixed_modes); } } static void intel_panel_add_edid_preferred_mode(struct intel_connector *connector) { struct drm_i915_private *dev_priv = to_i915(connector->base.dev); struct drm_display_mode *scan, *fixed_mode = NULL; if (list_empty(&connector->base.probed_modes)) return; /* make sure the preferred mode is first */ list_for_each_entry(scan, &connector->base.probed_modes, head) { if (scan->type & DRM_MODE_TYPE_PREFERRED) { fixed_mode = scan; break; } } if (!fixed_mode) fixed_mode = list_first_entry(&connector->base.probed_modes, typeof(*fixed_mode), head); drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s] using %s EDID fixed mode: " DRM_MODE_FMT "\n", connector->base.base.id, connector->base.name, fixed_mode->type & DRM_MODE_TYPE_PREFERRED ? "preferred" : "first", DRM_MODE_ARG(fixed_mode)); fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; list_move_tail(&fixed_mode->head, &connector->panel.fixed_modes); } static void intel_panel_destroy_probed_modes(struct intel_connector *connector) { struct drm_i915_private *i915 = to_i915(connector->base.dev); struct drm_display_mode *mode, *next; list_for_each_entry_safe(mode, next, &connector->base.probed_modes, head) { drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] not using EDID mode: " DRM_MODE_FMT "\n", connector->base.base.id, connector->base.name, DRM_MODE_ARG(mode)); list_del(&mode->head); drm_mode_destroy(&i915->drm, mode); } } void intel_panel_add_edid_fixed_modes(struct intel_connector *connector, bool has_drrs, bool has_vrr) { intel_panel_add_edid_preferred_mode(connector); if (intel_panel_preferred_fixed_mode(connector) && (has_drrs || has_vrr)) intel_panel_add_edid_alt_fixed_modes(connector, has_vrr); intel_panel_destroy_probed_modes(connector); } static void intel_panel_add_fixed_mode(struct intel_connector *connector, struct drm_display_mode *fixed_mode, const char *type) { struct drm_i915_private *i915 = to_i915(connector->base.dev); struct drm_display_info *info = &connector->base.display_info; if (!fixed_mode) return; fixed_mode->type |= DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER; info->width_mm = fixed_mode->width_mm; info->height_mm = fixed_mode->height_mm; drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] using %s fixed mode: " DRM_MODE_FMT "\n", connector->base.base.id, connector->base.name, type, DRM_MODE_ARG(fixed_mode)); list_add_tail(&fixed_mode->head, &connector->panel.fixed_modes); } void intel_panel_add_vbt_lfp_fixed_mode(struct intel_connector *connector) { struct drm_i915_private *i915 = to_i915(connector->base.dev); const struct drm_display_mode *mode; mode = connector->panel.vbt.lfp_lvds_vbt_mode; if (!mode) return; intel_panel_add_fixed_mode(connector, drm_mode_duplicate(&i915->drm, mode), "VBT LFP"); } void intel_panel_add_vbt_sdvo_fixed_mode(struct intel_connector *connector) { struct drm_i915_private *i915 = to_i915(connector->base.dev); const struct drm_display_mode *mode; mode = connector->panel.vbt.sdvo_lvds_vbt_mode; if (!mode) return; intel_panel_add_fixed_mode(connector, drm_mode_duplicate(&i915->drm, mode), "VBT SDVO"); } void intel_panel_add_encoder_fixed_mode(struct intel_connector *connector, struct intel_encoder *encoder) { intel_panel_add_fixed_mode(connector, intel_encoder_current_mode(encoder), "current (BIOS)"); } /* adjusted_mode has been preset to be the panel's fixed mode */ static int pch_panel_fitting(struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; int pipe_src_w = drm_rect_width(&crtc_state->pipe_src); int pipe_src_h = drm_rect_height(&crtc_state->pipe_src); int x, y, width, height; /* Native modes don't need fitting */ if (adjusted_mode->crtc_hdisplay == pipe_src_w && adjusted_mode->crtc_vdisplay == pipe_src_h && crtc_state->output_format != INTEL_OUTPUT_FORMAT_YCBCR420) return 0; switch (conn_state->scaling_mode) { case DRM_MODE_SCALE_CENTER: width = pipe_src_w; height = pipe_src_h; x = (adjusted_mode->crtc_hdisplay - width + 1)/2; y = (adjusted_mode->crtc_vdisplay - height + 1)/2; break; case DRM_MODE_SCALE_ASPECT: /* Scale but preserve the aspect ratio */ { u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h; u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay; if (scaled_width > scaled_height) { /* pillar */ width = scaled_height / pipe_src_h; if (width & 1) width++; x = (adjusted_mode->crtc_hdisplay - width + 1) / 2; y = 0; height = adjusted_mode->crtc_vdisplay; } else if (scaled_width < scaled_height) { /* letter */ height = scaled_width / pipe_src_w; if (height & 1) height++; y = (adjusted_mode->crtc_vdisplay - height + 1) / 2; x = 0; width = adjusted_mode->crtc_hdisplay; } else { x = y = 0; width = adjusted_mode->crtc_hdisplay; height = adjusted_mode->crtc_vdisplay; } } break; case DRM_MODE_SCALE_NONE: WARN_ON(adjusted_mode->crtc_hdisplay != pipe_src_w); WARN_ON(adjusted_mode->crtc_vdisplay != pipe_src_h); fallthrough; case DRM_MODE_SCALE_FULLSCREEN: x = y = 0; width = adjusted_mode->crtc_hdisplay; height = adjusted_mode->crtc_vdisplay; break; default: MISSING_CASE(conn_state->scaling_mode); return -EINVAL; } drm_rect_init(&crtc_state->pch_pfit.dst, x, y, width, height); crtc_state->pch_pfit.enabled = true; return 0; } static void centre_horizontally(struct drm_display_mode *adjusted_mode, int width) { u32 border, sync_pos, blank_width, sync_width; /* keep the hsync and hblank widths constant */ sync_width = adjusted_mode->crtc_hsync_end - adjusted_mode->crtc_hsync_start; blank_width = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start; sync_pos = (blank_width - sync_width + 1) / 2; border = (adjusted_mode->crtc_hdisplay - width + 1) / 2; border += border & 1; /* make the border even */ adjusted_mode->crtc_hdisplay = width; adjusted_mode->crtc_hblank_start = width + border; adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_hblank_start + blank_width; adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hblank_start + sync_pos; adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + sync_width; } static void centre_vertically(struct drm_display_mode *adjusted_mode, int height) { u32 border, sync_pos, blank_width, sync_width; /* keep the vsync and vblank widths constant */ sync_width = adjusted_mode->crtc_vsync_end - adjusted_mode->crtc_vsync_start; blank_width = adjusted_mode->crtc_vblank_end - adjusted_mode->crtc_vblank_start; sync_pos = (blank_width - sync_width + 1) / 2; border = (adjusted_mode->crtc_vdisplay - height + 1) / 2; adjusted_mode->crtc_vdisplay = height; adjusted_mode->crtc_vblank_start = height + border; adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vblank_start + blank_width; adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vblank_start + sync_pos; adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + sync_width; } static u32 panel_fitter_scaling(u32 source, u32 target) { /* * Floating point operation is not supported. So the FACTOR * is defined, which can avoid the floating point computation * when calculating the panel ratio. */ #define ACCURACY 12 #define FACTOR (1 << ACCURACY) u32 ratio = source * FACTOR / target; return (FACTOR * ratio + FACTOR/2) / FACTOR; } static void i965_scale_aspect(struct intel_crtc_state *crtc_state, u32 *pfit_control) { const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; int pipe_src_w = drm_rect_width(&crtc_state->pipe_src); int pipe_src_h = drm_rect_height(&crtc_state->pipe_src); u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h; u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay; /* 965+ is easy, it does everything in hw */ if (scaled_width > scaled_height) *pfit_control |= PFIT_ENABLE | PFIT_SCALING_PILLAR; else if (scaled_width < scaled_height) *pfit_control |= PFIT_ENABLE | PFIT_SCALING_LETTER; else if (adjusted_mode->crtc_hdisplay != pipe_src_w) *pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO; } static void i9xx_scale_aspect(struct intel_crtc_state *crtc_state, u32 *pfit_control, u32 *pfit_pgm_ratios, u32 *border) { struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; int pipe_src_w = drm_rect_width(&crtc_state->pipe_src); int pipe_src_h = drm_rect_height(&crtc_state->pipe_src); u32 scaled_width = adjusted_mode->crtc_hdisplay * pipe_src_h; u32 scaled_height = pipe_src_w * adjusted_mode->crtc_vdisplay; u32 bits; /* * For earlier chips we have to calculate the scaling * ratio by hand and program it into the * PFIT_PGM_RATIO register */ if (scaled_width > scaled_height) { /* pillar */ centre_horizontally(adjusted_mode, scaled_height / pipe_src_h); *border = LVDS_BORDER_ENABLE; if (pipe_src_h != adjusted_mode->crtc_vdisplay) { bits = panel_fitter_scaling(pipe_src_h, adjusted_mode->crtc_vdisplay); *pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT | bits << PFIT_VERT_SCALE_SHIFT); *pfit_control |= (PFIT_ENABLE | VERT_INTERP_BILINEAR | HORIZ_INTERP_BILINEAR); } } else if (scaled_width < scaled_height) { /* letter */ centre_vertically(adjusted_mode, scaled_width / pipe_src_w); *border = LVDS_BORDER_ENABLE; if (pipe_src_w != adjusted_mode->crtc_hdisplay) { bits = panel_fitter_scaling(pipe_src_w, adjusted_mode->crtc_hdisplay); *pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT | bits << PFIT_VERT_SCALE_SHIFT); *pfit_control |= (PFIT_ENABLE | VERT_INTERP_BILINEAR | HORIZ_INTERP_BILINEAR); } } else { /* Aspects match, Let hw scale both directions */ *pfit_control |= (PFIT_ENABLE | VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR | HORIZ_INTERP_BILINEAR); } } static int gmch_panel_fitting(struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0; struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; int pipe_src_w = drm_rect_width(&crtc_state->pipe_src); int pipe_src_h = drm_rect_height(&crtc_state->pipe_src); /* Native modes don't need fitting */ if (adjusted_mode->crtc_hdisplay == pipe_src_w && adjusted_mode->crtc_vdisplay == pipe_src_h) goto out; switch (conn_state->scaling_mode) { case DRM_MODE_SCALE_CENTER: /* * For centered modes, we have to calculate border widths & * heights and modify the values programmed into the CRTC. */ centre_horizontally(adjusted_mode, pipe_src_w); centre_vertically(adjusted_mode, pipe_src_h); border = LVDS_BORDER_ENABLE; break; case DRM_MODE_SCALE_ASPECT: /* Scale but preserve the aspect ratio */ if (DISPLAY_VER(dev_priv) >= 4) i965_scale_aspect(crtc_state, &pfit_control); else i9xx_scale_aspect(crtc_state, &pfit_control, &pfit_pgm_ratios, &border); break; case DRM_MODE_SCALE_FULLSCREEN: /* * Full scaling, even if it changes the aspect ratio. * Fortunately this is all done for us in hw. */ if (pipe_src_h != adjusted_mode->crtc_vdisplay || pipe_src_w != adjusted_mode->crtc_hdisplay) { pfit_control |= PFIT_ENABLE; if (DISPLAY_VER(dev_priv) >= 4) pfit_control |= PFIT_SCALING_AUTO; else pfit_control |= (VERT_AUTO_SCALE | VERT_INTERP_BILINEAR | HORIZ_AUTO_SCALE | HORIZ_INTERP_BILINEAR); } break; default: MISSING_CASE(conn_state->scaling_mode); return -EINVAL; } /* 965+ wants fuzzy fitting */ /* FIXME: handle multiple panels by failing gracefully */ if (DISPLAY_VER(dev_priv) >= 4) pfit_control |= PFIT_PIPE(crtc->pipe) | PFIT_FILTER_FUZZY; out: if ((pfit_control & PFIT_ENABLE) == 0) { pfit_control = 0; pfit_pgm_ratios = 0; } /* Make sure pre-965 set dither correctly for 18bpp panels. */ if (DISPLAY_VER(dev_priv) < 4 && crtc_state->pipe_bpp == 18) pfit_control |= PANEL_8TO6_DITHER_ENABLE; crtc_state->gmch_pfit.control = pfit_control; crtc_state->gmch_pfit.pgm_ratios = pfit_pgm_ratios; crtc_state->gmch_pfit.lvds_border_bits = border; return 0; } int intel_panel_fitting(struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *i915 = to_i915(crtc->base.dev); if (HAS_GMCH(i915)) return gmch_panel_fitting(crtc_state, conn_state); else return pch_panel_fitting(crtc_state, conn_state); } enum drm_connector_status intel_panel_detect(struct drm_connector *connector, bool force) { struct drm_i915_private *i915 = to_i915(connector->dev); if (!INTEL_DISPLAY_ENABLED(i915)) return connector_status_disconnected; return connector_status_connected; } enum drm_mode_status intel_panel_mode_valid(struct intel_connector *connector, const struct drm_display_mode *mode) { const struct drm_display_mode *fixed_mode = intel_panel_fixed_mode(connector, mode); if (!fixed_mode) return MODE_OK; if (mode->hdisplay != fixed_mode->hdisplay) return MODE_PANEL; if (mode->vdisplay != fixed_mode->vdisplay) return MODE_PANEL; if (drm_mode_vrefresh(mode) != drm_mode_vrefresh(fixed_mode)) return MODE_PANEL; return MODE_OK; } int intel_panel_init(struct intel_connector *connector) { struct intel_panel *panel = &connector->panel; intel_backlight_init_funcs(panel); drm_dbg_kms(connector->base.dev, "[CONNECTOR:%d:%s] DRRS type: %s\n", connector->base.base.id, connector->base.name, intel_drrs_type_str(intel_panel_drrs_type(connector))); return 0; } void intel_panel_fini(struct intel_connector *connector) { struct intel_panel *panel = &connector->panel; struct drm_display_mode *fixed_mode, *next; intel_backlight_destroy(panel); intel_bios_fini_panel(panel); list_for_each_entry_safe(fixed_mode, next, &panel->fixed_modes, head) { list_del(&fixed_mode->head); drm_mode_destroy(connector->base.dev, fixed_mode); } }