[Intel-gfx] [PATCH] drm/i915: Enable aspect/centering panel fitting for Ironlake.
Chris Wilson
chris at chris-wilson.co.uk
Thu Aug 5 12:25:26 CEST 2010
v2: Hook in DP paths to keep FULLSCREEN panel fitting on eDP.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw at linux.intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/i915_drv.h | 2 +
drivers/gpu/drm/i915/intel_display.c | 16 ++---
drivers/gpu/drm/i915/intel_dp.c | 20 ++-----
drivers/gpu/drm/i915/intel_drv.h | 7 ++
drivers/gpu/drm/i915/intel_lvds.c | 32 +++-------
drivers/gpu/drm/i915/intel_panel.c | 111 ++++++++++++++++++++++++++++++++++
7 files changed, 143 insertions(+), 46 deletions(-)
create mode 100644 drivers/gpu/drm/i915/intel_panel.c
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 384fd45..5c8e534 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -19,6 +19,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
intel_hdmi.o \
intel_sdvo.o \
intel_modes.o \
+ intel_panel.o \
intel_i2c.o \
intel_fb.o \
intel_tv.o \
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ad8dab5..6da15d8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -610,6 +610,8 @@ typedef struct drm_i915_private {
struct sdvo_device_mapping sdvo_mappings[2];
/* indicate whether the LVDS_BORDER should be enabled or not */
unsigned int lvds_border_bits;
+ /* Panel fitter placement and size for Ironlake+ */
+ u32 pch_pf_pos, pch_pf_size;
struct drm_crtc *plane_to_crtc_mapping[2];
struct drm_crtc *pipe_to_crtc_mapping[2];
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 07f893f..9b5fab4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1914,15 +1914,13 @@ static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
/* Enable panel fitting for LVDS */
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)
|| HAS_eDP || intel_pch_has_edp(crtc)) {
- temp = I915_READ(pf_ctl_reg);
- I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3);
-
- /* currently full aspect */
- I915_WRITE(pf_win_pos, 0);
-
- I915_WRITE(pf_win_size,
- (dev_priv->panel_fixed_mode->hdisplay << 16) |
- (dev_priv->panel_fixed_mode->vdisplay));
+ if (dev_priv->pch_pf_size) {
+ temp = I915_READ(pf_ctl_reg);
+ I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3);
+ I915_WRITE(pf_win_pos, dev_priv->pch_pf_pos);
+ I915_WRITE(pf_win_size, dev_priv->pch_pf_size);
+ } else
+ I915_WRITE(pf_ctl_reg, temp & ~PF_ENABLE);
}
/* Enable CPU pipe */
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index c4c5868..cee5d9c 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -523,21 +523,9 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) &&
dev_priv->panel_fixed_mode) {
- struct drm_display_mode *fixed_mode = dev_priv->panel_fixed_mode;
-
- adjusted_mode->hdisplay = fixed_mode->hdisplay;
- adjusted_mode->hsync_start = fixed_mode->hsync_start;
- adjusted_mode->hsync_end = fixed_mode->hsync_end;
- adjusted_mode->htotal = fixed_mode->htotal;
-
- adjusted_mode->vdisplay = fixed_mode->vdisplay;
- adjusted_mode->vsync_start = fixed_mode->vsync_start;
- adjusted_mode->vsync_end = fixed_mode->vsync_end;
- adjusted_mode->vtotal = fixed_mode->vtotal;
-
- adjusted_mode->clock = fixed_mode->clock;
- drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
-
+ intel_fixed_panel_mode(dev_priv->panel_fixed_mode, adjusted_mode);
+ intel_pch_panel_fitting(dev, DRM_MODE_SCALE_FULLSCREEN,
+ mode, adjusted_mode);
/*
* the mode->clock is used to calculate the Data&Link M/N
* of the pipe. For the eDP the fixed clock should be used.
@@ -572,8 +560,10 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
"count %d clock %d\n",
intel_dp->link_bw, intel_dp->lane_count,
adjusted_mode->clock);
+
return true;
}
+
return false;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index a44b8cb..c552b06 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -186,6 +186,13 @@ extern bool intel_dpd_is_edp(struct drm_device *dev);
extern void intel_edp_link_config (struct intel_encoder *, int *, int *);
+extern void intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
+ struct drm_display_mode *adjusted_mode);
+extern void intel_pch_panel_fitting(struct drm_device *dev,
+ int fitting_mode,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode);
+
extern int intel_panel_fitter_pipe (struct drm_device *dev);
extern void intel_crtc_load_lut(struct drm_crtc *crtc);
extern void intel_encoder_prepare (struct drm_encoder *encoder);
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 312ac30..cb5821e 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -246,26 +246,20 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
/* If we don't have a panel mode, there is nothing we can do */
if (dev_priv->panel_fixed_mode == NULL)
return true;
+
/*
* We have timings from the BIOS for the panel, put them in
* to the adjusted mode. The CRTC will be set up for this mode,
* with the panel scaling set up to source from the H/VDisplay
* of the original mode.
*/
- adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay;
- adjusted_mode->hsync_start =
- dev_priv->panel_fixed_mode->hsync_start;
- adjusted_mode->hsync_end =
- dev_priv->panel_fixed_mode->hsync_end;
- adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal;
- adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay;
- adjusted_mode->vsync_start =
- dev_priv->panel_fixed_mode->vsync_start;
- adjusted_mode->vsync_end =
- dev_priv->panel_fixed_mode->vsync_end;
- adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal;
- adjusted_mode->clock = dev_priv->panel_fixed_mode->clock;
- drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
+ intel_fixed_panel_mode(dev_priv->panel_fixed_mode, adjusted_mode);
+
+ if (HAS_PCH_SPLIT(dev)) {
+ intel_pch_panel_fitting(dev, intel_lvds->fitting_mode,
+ mode, adjusted_mode);
+ return true;
+ }
/* Make sure pre-965s set dither correctly */
if (!IS_I965G(dev)) {
@@ -278,10 +272,6 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
adjusted_mode->vdisplay == mode->vdisplay)
goto out;
- /* full screen scale for now */
- if (HAS_PCH_SPLIT(dev))
- goto out;
-
/* 965+ wants fuzzy fitting */
if (IS_I965G(dev))
pfit_control |= ((intel_crtc->pipe << PFIT_PIPE_SHIFT) |
@@ -293,10 +283,8 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
* to register description and PRM.
* Change the value here to see the borders for debugging
*/
- if (!HAS_PCH_SPLIT(dev)) {
- I915_WRITE(BCLRPAT_A, 0);
- I915_WRITE(BCLRPAT_B, 0);
- }
+ I915_WRITE(BCLRPAT_A, 0);
+ I915_WRITE(BCLRPAT_B, 0);
switch (intel_lvds->fitting_mode) {
case DRM_MODE_SCALE_CENTER:
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
new file mode 100644
index 0000000..e7f5299
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright © 2006-2010 Intel Corporation
+ * Copyright (c) 2006 Dave Airlie <airlied at linux.ie>
+ *
+ * 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 <eric at anholt.net>
+ * Dave Airlie <airlied at linux.ie>
+ * Jesse Barnes <jesse.barnes at intel.com>
+ * Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "intel_drv.h"
+
+void
+intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ adjusted_mode->hdisplay = fixed_mode->hdisplay;
+ adjusted_mode->hsync_start = fixed_mode->hsync_start;
+ adjusted_mode->hsync_end = fixed_mode->hsync_end;
+ adjusted_mode->htotal = fixed_mode->htotal;
+
+ adjusted_mode->vdisplay = fixed_mode->vdisplay;
+ adjusted_mode->vsync_start = fixed_mode->vsync_start;
+ adjusted_mode->vsync_end = fixed_mode->vsync_end;
+ adjusted_mode->vtotal = fixed_mode->vtotal;
+
+ adjusted_mode->clock = fixed_mode->clock;
+
+ drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
+}
+
+/* adjusted_mode has been preset to be the panel's fixed mode */
+void
+intel_pch_panel_fitting(struct drm_device *dev,
+ int fitting_mode,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int x, y, width, height;
+
+ x = y = width = height = 0;
+
+ /* Native modes don't need fitting */
+ if (adjusted_mode->hdisplay == mode->hdisplay &&
+ adjusted_mode->vdisplay == mode->vdisplay)
+ goto done;
+
+ switch (fitting_mode) {
+ case DRM_MODE_SCALE_CENTER:
+ width = mode->hdisplay;
+ height = mode->vdisplay;
+ x = (adjusted_mode->hdisplay - width + 1)/2;
+ y = (adjusted_mode->vdisplay - height + 1)/2;
+ break;
+
+ case DRM_MODE_SCALE_ASPECT:
+ /* Scale but preserve the aspect ratio */
+ {
+ u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
+ u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;
+ if (scaled_width > scaled_height) { /* pillar */
+ width = scaled_height / mode->vdisplay;
+ x = (adjusted_mode->hdisplay - width + 1) / 2;
+ y = 0;
+ height = adjusted_mode->vdisplay;
+ } else if (scaled_width < scaled_height) { /* letter */
+ height = scaled_width / mode->hdisplay;
+ y = (adjusted_mode->vdisplay - height + 1) / 2;
+ x = 0;
+ width = adjusted_mode->hdisplay;
+ } else {
+ x = y = 0;
+ width = adjusted_mode->hdisplay;
+ height = adjusted_mode->vdisplay;
+ }
+ }
+ break;
+
+ default:
+ case DRM_MODE_SCALE_FULLSCREEN:
+ x = y = 0;
+ width = adjusted_mode->hdisplay;
+ height = adjusted_mode->vdisplay;
+ break;
+ }
+
+done:
+ dev_priv->pch_pf_pos = (x << 16) | y;
+ dev_priv->pch_pf_size = (width << 16) | height;
+}
--
1.7.1
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