Re: [Intel-gfx] [PATCH v3 4/7] drm/fb-helper: Apply panel orientation connector prop to the primary
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From: Daniel Vetter <hidden>
Date: 2017-10-30 09:52:16
Also in:
dri-devel, intel-gfx
On Mon, Oct 23, 2017 at 09:14:22AM +0200, Hans de Goede wrote:
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Apply the "panel orientation" drm connector prop to the primary plane so that fbcon and fbdev using userspace programs display the right way up. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id”894 Signed-off-by: Hans de Goede <redacted> --- Changes in v2: -New patch in v2 of this patch-set Changes in v3: -Use a rotation member in struct drm_fb_helper_crtc and set that from drm_setup_crtcs instead of looping over all crtc's to find the right one later -Since we now no longer look at rotation quirks directly in the fbcon code, set fb_info.fbcon_rotate_hint when the panel is not mounted upright and we cannot use hardware rotation --- drivers/gpu/drm/drm_fb_helper.c | 76 +++++++++++++++++++++++++++++++++++++++-- include/drm/drm_fb_helper.h | 8 +++++ 2 files changed, 82 insertions(+), 2 deletions(-)diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 116d1f1337c7..e0f95f2cc52f 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c@@ -41,6 +41,7 @@ #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> +#include "drm_crtc_internal.h" #include "drm_crtc_helper_internal.h" static bool drm_fbdev_emulation = true;@@ -350,6 +351,7 @@ EXPORT_SYMBOL(drm_fb_helper_debug_leave); static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool active) { struct drm_device *dev = fb_helper->dev; + struct drm_plane_state *plane_state; struct drm_plane *plane; struct drm_atomic_state *state; int i, ret;@@ -368,8 +370,6 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ retry: plane_mask = 0; drm_for_each_plane(plane, dev) { - struct drm_plane_state *plane_state; - plane_state = drm_atomic_get_plane_state(state, plane); if (IS_ERR(plane_state)) { ret = PTR_ERR(plane_state);@@ -392,6 +392,11 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ for (i = 0; i < fb_helper->crtc_count; i++) { struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; + struct drm_plane *primary = mode_set->crtc->primary; + + /* Cannot fail as we've already gotten the plane state above */ + plane_state = drm_atomic_get_new_plane_state(state, primary); + plane_state->rotation = fb_helper->crtc_info[i].rotation; ret = __drm_atomic_helper_set_config(mode_set, state); if (ret != 0)@@ -2334,6 +2339,57 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, return best_score; } +/* + * This function checks if rotation is necessary because of panel orientation + * and if it is, if it is supported. + * If rotation is necessary and supported, its gets set in fb_crtc.rotation. + * If rotation is necessary but not supported, a DRM_MODE_ROTATE_* flag gets + * or-ed into fb_helper->rotations. In drm_setup_crtcs_fb() we check if only + * one bit is set and then we set fb_info.fbcon_rotate_hint to make fbcon do + * the unsupported rotation. + */ +static void drm_setup_crtc_rotation(struct drm_fb_helper *fb_helper, + struct drm_fb_helper_crtc *fb_crtc, + struct drm_connector *connector) +{ + struct drm_plane *plane = fb_crtc->mode_set.crtc->primary; + uint64_t valid_mask = 0; + int i, rotation; + + fb_crtc->rotation = DRM_MODE_ROTATE_0; + + switch (connector->display_info.panel_orientation) { + case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP: + rotation = DRM_MODE_ROTATE_180; + break; + case DRM_MODE_PANEL_ORIENTATION_LEFT_UP: + rotation = DRM_MODE_ROTATE_90; + break; + case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP: + rotation = DRM_MODE_ROTATE_270; + break;
For 90/270 hw rotation you need to flip the coordinates/sizes of the fb.
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+ default: + rotation = DRM_MODE_ROTATE_0; + } + + if (rotation = DRM_MODE_ROTATE_0 || !plane->rotation_property) { + fb_helper->rotations |= rotation; + return; + } + + for (i = 0; i < plane->rotation_property->num_values; i++) + valid_mask |= (1ULL << plane->rotation_property->values[i]);
This isn't a good enough check for atomic drivers (and not for gen9+ intel hw), since we might expose 90° rotations, but it only works if you have the correct tiling format. For atomic drivers it'd be really good if we could do a TEST_ONLY commit first, and if that fails, fall back to sw rotation. But that poses a bit a chicken&egg with creating the framebuffer (we need one for the TEST_ONLY), so probably a bit too much more for this. And afaiui your quirk list only applies to older stuff. At least add a FIXME meanwhile? In a way we have a FIXME already for multi-pipe, since we don't try to fall back to fewer pipes if the single atomic commit failed. Or maybe just don't use 90/270 hw rotation for now since it seems buggy in your code anyway.
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+ + if (!(rotation & valid_mask)) { + fb_helper->rotations |= rotation; + return; + } + + fb_crtc->rotation = rotation; + /* Rotating in hardware, fbcon should not rotate */ + fb_helper->rotations |= DRM_MODE_ROTATE_0;
Wrong bitopt I think. Or you're doing some really funny control logic by oring in another value to hit the default case below which doesn't rotate anything. I think that should be done explicitly, by explicitly setting to rotation to ROTATE_0 instead of this. Same for the check above.
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+} + static void drm_setup_crtcs(struct drm_fb_helper *fb_helper, u32 width, u32 height) {@@ -2393,6 +2449,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper, drm_fb_helper_modeset_release(fb_helper, &fb_helper->crtc_info[i].mode_set); + fb_helper->rotations = 0; drm_fb_helper_for_each_connector(fb_helper, i) { struct drm_display_mode *mode = modes[i]; struct drm_fb_helper_crtc *fb_crtc = crtcs[i];@@ -2412,6 +2469,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper, modeset->mode = drm_mode_duplicate(dev, fb_crtc->desired_mode); drm_connector_get(connector); + drm_setup_crtc_rotation(fb_helper, fb_crtc, connector); modeset->connectors[modeset->num_connectors++] = connector; modeset->x = offset->x; modeset->y = offset->y;@@ -2453,6 +2511,20 @@ static void drm_setup_crtcs_fb(struct drm_fb_helper *fb_helper) } } mutex_unlock(&fb_helper->dev->mode_config.mutex); + + switch (fb_helper->rotations) { + case DRM_MODE_ROTATE_90: + info->fbcon_rotate_hint = FB_ROTATE_CCW; + break; + case DRM_MODE_ROTATE_180: + info->fbcon_rotate_hint = FB_ROTATE_UD; + break; + case DRM_MODE_ROTATE_270: + info->fbcon_rotate_hint = FB_ROTATE_CW; + break; + default: + info->fbcon_rotate_hint = FB_ROTATE_UR; + } } /* Note: Drops fb_helper->lock before returning. */diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 33fe95927742..4ee834a077a2 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h@@ -48,6 +48,7 @@ struct drm_fb_helper_crtc { struct drm_mode_set mode_set; struct drm_display_mode *desired_mode; int x, y; + int rotation; }; /**@@ -158,6 +159,13 @@ struct drm_fb_helper { struct drm_fb_helper_crtc *crtc_info; int connector_count; int connector_info_alloc_count; + /** + * @rotations: + * Bitmask of all rotations requested for panel-orientation which + * could not be handled in hardware. If only one bit is set + * fbdev->fbcon_rotate_hint gets set to the requested rotation. + */ + int rotations; /** * @connector_info: *-- 2.14.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch