From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/i915/display/intel_panel.c | 765 +++++++++++++++++++++++++++++ 1 file changed, 765 insertions(+) create mode 100644 drivers/gpu/drm/i915/display/intel_panel.c (limited to 'drivers/gpu/drm/i915/display/intel_panel.c') diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c new file mode 100644 index 0000000000..9232a305b1 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_panel.c @@ -0,0 +1,765 @@ +/* + * 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 + +#include "i915_reg.h" +#include "intel_backlight.h" +#include "intel_connector.h" +#include "intel_de.h" +#include "intel_display_types.h" +#include "intel_drrs.h" +#include "intel_lvds_regs.h" +#include "intel_panel.h" +#include "intel_quirks.h" +#include "intel_vrr.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->display.vbt.lvds_use_ssc && + !intel_has_quirk(i915, 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); +} + +static bool is_in_vrr_range(struct intel_connector *connector, int vrefresh) +{ + const struct drm_display_info *info = &connector->base.display_info; + + return intel_vrr_is_capable(connector) && + vrefresh >= info->monitor_range.min_vfreq && + vrefresh <= info->monitor_range.max_vfreq; +} + +static bool is_best_fixed_mode(struct intel_connector *connector, + int vrefresh, int fixed_mode_vrefresh, + const struct drm_display_mode *best_mode) +{ + /* we want to always return something */ + if (!best_mode) + return true; + + /* + * With VRR always pick a mode with equal/higher than requested + * vrefresh, which we can then reduce to match the requested + * vrefresh by extending the vblank length. + */ + if (is_in_vrr_range(connector, vrefresh) && + is_in_vrr_range(connector, fixed_mode_vrefresh) && + fixed_mode_vrefresh < vrefresh) + return false; + + /* pick the fixed_mode that is closest in terms of vrefresh */ + return abs(fixed_mode_vrefresh - vrefresh) < + abs(drm_mode_vrefresh(best_mode) - vrefresh); +} + +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); + + list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) { + int fixed_mode_vrefresh = drm_mode_vrefresh(fixed_mode); + + if (is_best_fixed_mode(connector, vrefresh, + fixed_mode_vrefresh, best_mode)) + 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_fixed_mode(const struct drm_display_mode *mode, + const struct drm_display_mode *preferred_mode) +{ + u32 sync_flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC | + DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC; + + return (mode->flags & ~sync_flags) == (preferred_mode->flags & ~sync_flags) && + mode->hdisplay == preferred_mode->hdisplay && + mode->vdisplay == preferred_mode->vdisplay; +} + +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; +} + +const struct drm_display_mode * +intel_panel_highest_mode(struct intel_connector *connector, + const struct drm_display_mode *adjusted_mode) +{ + const struct drm_display_mode *fixed_mode, *best_mode = adjusted_mode; + + /* pick the fixed_mode that has the highest clock */ + list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head) { + if (fixed_mode->clock > best_mode->clock) + 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; +} + +static bool has_drrs_modes(struct intel_connector *connector) +{ + const struct drm_display_mode *mode1; + + list_for_each_entry(mode1, &connector->panel.fixed_modes, head) { + const struct drm_display_mode *mode2 = mode1; + + list_for_each_entry_continue(mode2, &connector->panel.fixed_modes, head) { + if (is_alt_drrs_mode(mode1, mode2)) + return true; + } + } + + return false; +} + +enum drrs_type intel_panel_drrs_type(struct intel_connector *connector) +{ + 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); + int vrefresh, fixed_mode_vrefresh; + bool is_vrr; + + if (!fixed_mode) + return 0; + + vrefresh = drm_mode_vrefresh(adjusted_mode); + fixed_mode_vrefresh = drm_mode_vrefresh(fixed_mode); + + /* + * Assume that we shouldn't muck about with the + * timings if they don't land in the VRR range. + */ + is_vrr = is_in_vrr_range(connector, vrefresh) && + is_in_vrr_range(connector, fixed_mode_vrefresh); + + if (!is_vrr) { + /* + * 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(vrefresh - fixed_mode_vrefresh) > 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, + vrefresh, fixed_mode_vrefresh); + + return -EINVAL; + } + } + + drm_mode_copy(adjusted_mode, fixed_mode); + + if (is_vrr && fixed_mode_vrefresh != vrefresh) + adjusted_mode->vtotal = + DIV_ROUND_CLOSEST(adjusted_mode->clock * 1000, + adjusted_mode->htotal * vrefresh); + + drm_mode_set_crtcinfo(adjusted_mode, 0); + + return 0; +} + +static void intel_panel_add_edid_alt_fixed_modes(struct intel_connector *connector) +{ + 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)) + 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 use_alt_fixed_modes) +{ + intel_panel_add_edid_preferred_mode(connector); + if (intel_panel_preferred_fixed_mode(connector) && use_alt_fixed_modes) + intel_panel_add_edid_alt_fixed_modes(connector); + 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 |= (PFIT_HORIZ_SCALE(bits) | + PFIT_VERT_SCALE(bits)); + *pfit_control |= (PFIT_ENABLE | + PFIT_VERT_INTERP_BILINEAR | + PFIT_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 |= (PFIT_HORIZ_SCALE(bits) | + PFIT_VERT_SCALE(bits)); + *pfit_control |= (PFIT_ENABLE | + PFIT_VERT_INTERP_BILINEAR | + PFIT_HORIZ_INTERP_BILINEAR); + } + } else { + /* Aspects match, Let hw scale both directions */ + *pfit_control |= (PFIT_ENABLE | + PFIT_VERT_AUTO_SCALE | + PFIT_HORIZ_AUTO_SCALE | + PFIT_VERT_INTERP_BILINEAR | + PFIT_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 |= (PFIT_VERT_AUTO_SCALE | + PFIT_VERT_INTERP_BILINEAR | + PFIT_HORIZ_AUTO_SCALE | + PFIT_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 |= PFIT_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; +} + +void intel_panel_init_alloc(struct intel_connector *connector) +{ + struct intel_panel *panel = &connector->panel; + + connector->panel.vbt.panel_type = -1; + connector->panel.vbt.backlight.controller = -1; + INIT_LIST_HEAD(&panel->fixed_modes); +} + +int intel_panel_init(struct intel_connector *connector, + const struct drm_edid *fixed_edid) +{ + struct intel_panel *panel = &connector->panel; + + panel->fixed_edid = fixed_edid; + + intel_backlight_init_funcs(panel); + + if (!has_drrs_modes(connector)) + connector->panel.vbt.drrs_type = DRRS_TYPE_NONE; + + 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; + + if (!IS_ERR_OR_NULL(panel->fixed_edid)) + drm_edid_free(panel->fixed_edid); + + 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); + } +} -- cgit v1.2.3