On Thu, Mar 27, 2014 at 05:44:35PM -0700, Matt Roper wrote:
> Add a new drm_crtc_init_with_planes() to allow drivers to provide
> specific primary and cursor planes at CRTC initialization. The existing
> drm_crtc_init() interface remains to avoid driver churn in existing
> drivers; it will initialize the CRTC with a plane helper-created primary
> plane and no cursor plane.
>
> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
> ---
> drivers/gpu/drm/drm_crtc.c | 44 +++++++++++++++++++++++++++++++++++++++++---
> include/drm/drm_crtc.h | 11 +++++++++++
> 2 files changed, 52 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 24226de..a983311 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -37,6 +37,7 @@
> #include <drm/drm_crtc.h>
> #include <drm/drm_edid.h>
> #include <drm/drm_fourcc.h>
> +#include <drm/drm_plane_helper.h>
>
> #include "drm_crtc_internal.h"
>
> @@ -692,9 +693,12 @@ void drm_framebuffer_remove(struct drm_framebuffer *fb)
> EXPORT_SYMBOL(drm_framebuffer_remove);
>
> /**
> - * drm_crtc_init - Initialise a new CRTC object
> + * drm_crtc_init_with_planes - Initialise a new CRTC object with
> + * specified primary and cursor planes.
> * @dev: DRM device
> * @crtc: CRTC object to init
> + * @primary: Primary plane for CRTC
> + * @cursor: Cursor plane for CRTC
> * @funcs: callbacks for the new CRTC
> *
> * Inits a new object created as base part of a driver crtc object.
> @@ -702,8 +706,10 @@ EXPORT_SYMBOL(drm_framebuffer_remove);
> * Returns:
> * Zero on success, error code on failure.
> */
> -int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
> - const struct drm_crtc_funcs *funcs)
> +int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
> + struct drm_plane *primary,
> + struct drm_plane *cursor,
> + const struct drm_crtc_funcs *funcs)
> {
> int ret;
>
> @@ -724,11 +730,41 @@ int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
> list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
> dev->mode_config.num_crtc++;
>
> + crtc->primary = primary;
> + if (primary)
> + primary->possible_crtcs = 1 << drm_crtc_index(crtc);
> +
> + crtc->cursor = cursor;
> + if (cursor)
> + cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
> +
> out:
> drm_modeset_unlock_all(dev);
>
> return ret;
> }
> +EXPORT_SYMBOL(drm_crtc_init_with_planes);
> +
> +/**
> + * drm_crtc_init - Legacy CRTC initialization function
> + * @dev: DRM device
> + * @crtc: CRTC object to init
> + * @funcs: callbacks for the new CRTC
> + *
> + * Initialize a CRTC object with a default helper-provided primary plane and no
> + * cursor plane.
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
> + const struct drm_crtc_funcs *funcs)
> +{
> + struct drm_plane *primary;
> +
> + primary = drm_primary_helper_create_plane(dev, NULL, 0);
> + return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs);
> +}
> EXPORT_SYMBOL(drm_crtc_init);
I think we should move the drm_crtc_init to drm_plane_helpers.c to be
perfectly strict with the "nothing in drm core should depend upon helpers"
rule for avoiding midlayer mistakes.
-Daniel
>
> /**
> @@ -2248,6 +2284,8 @@ int drm_mode_set_config_internal(struct drm_mode_set *set)
>
> ret = crtc->funcs->set_config(set);
> if (ret == 0) {
> + crtc->primary->crtc = crtc;
> +
> /* crtc->fb must be updated by ->set_config, enforces this. */
> WARN_ON(fb != crtc->fb);
> }
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 78cf825..e7ed766 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -270,6 +270,8 @@ struct drm_crtc_funcs {
> * @dev: parent DRM device
> * @head: list management
> * @base: base KMS object for ID tracking etc.
> + * @primary: primary plane for this CRTC
> + * @cursor: cursor plane for this CRTC
> * @enabled: is this CRTC enabled?
> * @mode: current mode timings
> * @hwmode: mode timings as programmed to hw regs
> @@ -305,6 +307,10 @@ struct drm_crtc {
>
> struct drm_mode_object base;
>
> + /* primary and cursor planes for CRTC */
> + struct drm_plane *primary;
> + struct drm_plane *cursor;
> +
> /* framebuffer the connector is currently bound to */
> struct drm_framebuffer *fb;
>
> @@ -826,6 +832,11 @@ extern void drm_modeset_lock_all(struct drm_device *dev);
> extern void drm_modeset_unlock_all(struct drm_device *dev);
> extern void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
>
> +extern int drm_crtc_init_with_planes(struct drm_device *dev,
> + struct drm_crtc *crtc,
> + struct drm_plane *primary,
> + struct drm_plane *cursor,
> + const struct drm_crtc_funcs *funcs);
> extern int drm_crtc_init(struct drm_device *dev,
> struct drm_crtc *crtc,
> const struct drm_crtc_funcs *funcs);
> --
> 1.8.5.1
>
> _______________________________________________
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> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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