Hi Tomi,
Thank you for the patch.
On Friday 02 Dec 2016 16:07:11 Tomi Valkeinen wrote:
> We set the possible_crtc for all planes to "(1 << priv->num_crtcs) - 1",
> which is fine as the HW planes can be used fro all crtcs. However, when
> we're doing that, we are still incrementing 'num_crtcs', and we'll end
> up with bad possible_crtcs, preventing the use of the primary planes.
>
> This patch passes a possible_crtcs mask to plane init function so that
> we get correct possible_crtc.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> ---
>
> v2: use correct possible_crtcs value
>
> drivers/gpu/drm/omapdrm/omap_drv.c | 17 ++++++++++++-----
> drivers/gpu/drm/omapdrm/omap_drv.h | 3 ++-
> drivers/gpu/drm/omapdrm/omap_plane.c | 6 +++---
> 3 files changed, 17 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c
> b/drivers/gpu/drm/omapdrm/omap_drv.c index 39c5312b466c..fdc83cbcde61
> 100644
> --- a/drivers/gpu/drm/omapdrm/omap_drv.c
> +++ b/drivers/gpu/drm/omapdrm/omap_drv.c
> @@ -267,13 +267,15 @@ static int omap_connect_dssdevs(void)
> }
>
> static int omap_modeset_create_crtc(struct drm_device *dev, int id,
> - enum omap_channel channel)
> + enum omap_channel channel,
> + u32 possible_crtcs)
> {
> struct omap_drm_private *priv = dev->dev_private;
> struct drm_plane *plane;
> struct drm_crtc *crtc;
>
> - plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY);
> + plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY,
> + possible_crtcs);
> if (IS_ERR(plane))
> return PTR_ERR(plane);
If you removed the priv->num_crtcs++ a bit below in this function...
> @@ -309,6 +311,7 @@ static int omap_modeset_init(struct drm_device *dev)
> int num_crtcs;
> int i, id = 0;
> int ret;
> + u32 possible_crtcs;
>
> drm_mode_config_init(dev);
>
> @@ -325,6 +328,7 @@ static int omap_modeset_init(struct drm_device *dev)
> * We use the num_crtc argument to limit the number of crtcs we
create.
> */
> num_crtcs = min3(num_crtc, num_mgrs, num_ovls);
and assigned priv->num_crtcs here and replaced the channel_used() function
with a simple bitmask private to omap_modeset_init() you would end up with a
much simpler implementation that wouldn't require passing possible_crtcs
through a bunch of functions.
> + possible_crtcs = (1 << num_crtcs) - 1;
>
> dssdev = NULL;
>
> @@ -388,7 +392,8 @@ static int omap_modeset_init(struct drm_device *dev)
> * allocated crtc, we create a new crtc for it
> */
> if (!channel_used(dev, channel)) {
> - ret = omap_modeset_create_crtc(dev, id, channel);
> + ret = omap_modeset_create_crtc(dev, id, channel,
> + possible_crtcs);
> if (ret < 0) {
> dev_err(dev->dev,
> "could not create CRTC (channel
%u)\n",
> @@ -418,7 +423,8 @@ static int omap_modeset_init(struct drm_device *dev)
> return -ENOMEM;
> }
>
> - ret = omap_modeset_create_crtc(dev, id, i);
> + ret = omap_modeset_create_crtc(dev, id, i,
> + possible_crtcs);
> if (ret < 0) {
> dev_err(dev->dev,
> "could not create CRTC (channel %u)\n", i);
> @@ -432,7 +438,8 @@ static int omap_modeset_init(struct drm_device *dev)
> for (; id < num_ovls; id++) {
> struct drm_plane *plane;
>
> - plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY);
> + plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY,
> + possible_crtcs);
> if (IS_ERR(plane))
> return PTR_ERR(plane);
>
> diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h
> b/drivers/gpu/drm/omapdrm/omap_drv.h index 4c51135eb9a6..7d9dd5400cef
> 100644
> --- a/drivers/gpu/drm/omapdrm/omap_drv.h
> +++ b/drivers/gpu/drm/omapdrm/omap_drv.h
> @@ -157,7 +157,8 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
> int omap_crtc_wait_pending(struct drm_crtc *crtc);
>
> struct drm_plane *omap_plane_init(struct drm_device *dev,
> - int id, enum drm_plane_type type);
> + int id, enum drm_plane_type type,
> + u32 possible_crtcs);
> void omap_plane_install_properties(struct drm_plane *plane,
> struct drm_mode_object *obj);
>
> diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c
> b/drivers/gpu/drm/omapdrm/omap_plane.c index 9c43cb481e62..82b2c23d6769
> 100644
> --- a/drivers/gpu/drm/omapdrm/omap_plane.c
> +++ b/drivers/gpu/drm/omapdrm/omap_plane.c
> @@ -356,9 +356,9 @@ static const uint32_t error_irqs[] = {
>
> /* initialize plane */
> struct drm_plane *omap_plane_init(struct drm_device *dev,
> - int id, enum drm_plane_type type)
> + int id, enum drm_plane_type type,
> + u32 possible_crtcs)
> {
> - struct omap_drm_private *priv = dev->dev_private;
> struct drm_plane *plane;
> struct omap_plane *omap_plane;
> int ret;
> @@ -381,7 +381,7 @@ struct drm_plane *omap_plane_init(struct drm_device
> *dev, omap_plane->error_irq.irq = omap_plane_error_irq;
> omap_irq_register(dev, &omap_plane->error_irq);
>
> - ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
> + ret = drm_universal_plane_init(dev, plane, possible_crtcs,
> &omap_plane_funcs, omap_plane->formats,
> omap_plane->nformats, type, NULL);
> if (ret < 0)
--
Regards,
Laurent Pinchart
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