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drm/omap: Move bus flag hack to encoder implementation 

The bus flags stored in omap_dss_device instances are used to fixup the
video mode before setting it, to honour constraints that can't be
expressed through drm_display_mode. The fixup occurs in the CRTC mode
set operation and the resulting video mode is stored internally in the
CRTC. It is then used next by omap_encoder_enable() to apply mode fixups
for the omap_dss_device instances in omap_encoder_update().

Move the hack to the omap_encoder_update() function right before
applying the omap_dss_device fixups, in order to group all fixups
together.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Laurent Pinchart 2018-06-07 18:32:16 +03:00 committed by Tomi Valkeinen
parent 31cd7afa30
commit 8e9c1c6676
2 changed files with 43 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/gpu/drm/omapdrm/omap_crtc.c
View File

@ -420,8 +420,6 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
struct drm_display_mode *mode = &crtc->state->adjusted_mode;
struct videomode *vm = &omap_crtc->vm;
struct omap_dss_device *dssdev;
DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
omap_crtc->name, mode->base.id, mode->name,
@ -430,45 +428,7 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc)
mode->vdisplay, mode->vsync_start, mode->vsync_end, mode->vtotal,
mode->type, mode->flags);
drm_display_mode_to_videomode(mode, vm);
/*
* HACK: This fixes the vm flags.
* struct drm_display_mode does not contain the VSYNC/HSYNC/DE flags
* and they get lost when converting back and forth between
* struct drm_display_mode and struct videomode. The hack below
* goes and fetches the missing flags from the panel drivers.
*
* A better solution is to use DRM's bus-flags through the whole driver.
*/
for (dssdev = omap_crtc->pipe->output; dssdev; dssdev = dssdev->next) {
unsigned long bus_flags = dssdev->bus_flags;
if (!(vm->flags & (DISPLAY_FLAGS_DE_LOW |
DISPLAY_FLAGS_DE_HIGH))) {
if (bus_flags & DRM_BUS_FLAG_DE_LOW)
vm->flags |= DISPLAY_FLAGS_DE_LOW;
else if (bus_flags & DRM_BUS_FLAG_DE_HIGH)
vm->flags |= DISPLAY_FLAGS_DE_HIGH;
}
if (!(vm->flags & (DISPLAY_FLAGS_PIXDATA_POSEDGE |
DISPLAY_FLAGS_PIXDATA_NEGEDGE))) {
if (bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
vm->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
else if (bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
vm->flags |= DISPLAY_FLAGS_PIXDATA_NEGEDGE;
}
if (!(vm->flags & (DISPLAY_FLAGS_SYNC_POSEDGE |
DISPLAY_FLAGS_SYNC_NEGEDGE))) {
if (bus_flags & DRM_BUS_FLAG_SYNC_POSEDGE)
vm->flags |= DISPLAY_FLAGS_SYNC_POSEDGE;
else if (bus_flags & DRM_BUS_FLAG_SYNC_NEGEDGE)
vm->flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
}
}
drm_display_mode_to_videomode(mode, &omap_crtc->vm);
}
static int omap_crtc_atomic_check(struct drm_crtc *crtc,

40
drivers/gpu/drm/omapdrm/omap_encoder.c
View File

@ -103,9 +103,9 @@ static int omap_encoder_update(struct drm_encoder *encoder,
int ret;
for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) {
if (!dssdev->ops->check_timings)
continue;
unsigned long bus_flags = dssdev->bus_flags;
if (dssdev->ops->check_timings) {
ret = dssdev->ops->check_timings(dssdev, vm);
if (ret) {
dev_err(dev->dev, "invalid timings: %d\n", ret);
@ -113,6 +113,42 @@ static int omap_encoder_update(struct drm_encoder *encoder,
}
}
/*
* HACK: This fixes the vm flags.
* struct drm_display_mode does not contain the VSYNC/HSYNC/DE
* flags and they get lost when converting back and forth
* between struct drm_display_mode and struct videomode. The
* hack below goes and fetches the missing flags.
*
* A better solution is to use DRM's bus-flags through the whole
* driver.
*/
if (!(vm->flags & (DISPLAY_FLAGS_DE_LOW |
DISPLAY_FLAGS_DE_HIGH))) {
if (bus_flags & DRM_BUS_FLAG_DE_LOW)
vm->flags |= DISPLAY_FLAGS_DE_LOW;
else if (bus_flags & DRM_BUS_FLAG_DE_HIGH)
vm->flags |= DISPLAY_FLAGS_DE_HIGH;
}
if (!(vm->flags & (DISPLAY_FLAGS_PIXDATA_POSEDGE |
DISPLAY_FLAGS_PIXDATA_NEGEDGE))) {
if (bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
vm->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
else if (bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
vm->flags |= DISPLAY_FLAGS_PIXDATA_NEGEDGE;
}
if (!(vm->flags & (DISPLAY_FLAGS_SYNC_POSEDGE |
DISPLAY_FLAGS_SYNC_NEGEDGE))) {
if (bus_flags & DRM_BUS_FLAG_SYNC_POSEDGE)
vm->flags |= DISPLAY_FLAGS_SYNC_POSEDGE;
else if (bus_flags & DRM_BUS_FLAG_SYNC_NEGEDGE)
vm->flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
}
}
if (display->ops->set_timings)
display->ops->set_timings(display, vm);