diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_helper.c | 110 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_plane_helper.c | 10 | ||||
| -rw-r--r-- | include/drm/drm_crtc.h | 4 | ||||
| -rw-r--r-- | include/drm/drm_crtc_helper.h | 7 | ||||
| -rw-r--r-- | include/drm/drm_plane_helper.h | 4 |
5 files changed, 130 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 6c65a0a28fbd..95ecbb131053 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -38,6 +38,7 @@ #include <drm/drm_fourcc.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_plane_helper.h> #include <drm/drm_edid.h> MODULE_AUTHOR("David Airlie, Jesse Barnes"); @@ -888,3 +889,112 @@ void drm_helper_resume_force_mode(struct drm_device *dev) drm_modeset_unlock_all(dev); } EXPORT_SYMBOL(drm_helper_resume_force_mode); + +/** + * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers + * @crtc: DRM CRTC + * @mode: DRM display mode which userspace requested + * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks + * @x: x offset of the CRTC scanout area on the underlying framebuffer + * @y: y offset of the CRTC scanout area on the underlying framebuffer + * @old_fb: previous framebuffer + * + * This function implements a callback useable as the ->mode_set callback + * required by the crtc helpers. Besides the atomic plane helper functions for + * the primary plane the driver must also provide the ->mode_set_nofb callback + * to set up the crtc. + * + * This is a transitional helper useful for converting drivers to the atomic + * interfaces. + */ +int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_crtc_state *crtc_state; + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + int ret; + + if (crtc->funcs->atomic_duplicate_state) + crtc_state = crtc->funcs->atomic_duplicate_state(crtc); + else if (crtc->state) + crtc_state = kmemdup(crtc->state, sizeof(*crtc_state), + GFP_KERNEL); + else + crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL); + if (!crtc_state) + return -ENOMEM; + + crtc_state->enable = true; + crtc_state->planes_changed = true; + drm_mode_copy(&crtc_state->mode, mode); + drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode); + + if (crtc_funcs->atomic_check) { + ret = crtc_funcs->atomic_check(crtc, crtc_state); + if (ret) { + kfree(crtc_state); + + return ret; + } + } + + swap(crtc->state, crtc_state); + + crtc_funcs->mode_set_nofb(crtc); + + if (crtc_state) { + if (crtc->funcs->atomic_destroy_state) + crtc->funcs->atomic_destroy_state(crtc, crtc_state); + else + kfree(crtc_state); + } + + return drm_helper_crtc_mode_set_base(crtc, x, y, old_fb); +} +EXPORT_SYMBOL(drm_helper_crtc_mode_set); + +/** + * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers + * @crtc: DRM CRTC + * @x: x offset of the CRTC scanout area on the underlying framebuffer + * @y: y offset of the CRTC scanout area on the underlying framebuffer + * @old_fb: previous framebuffer + * + * This function implements a callback useable as the ->mode_set_base used + * required by the crtc helpers. The driver must provide the atomic plane helper + * functions for the primary plane. + * + * This is a transitional helper useful for converting drivers to the atomic + * interfaces. + */ +int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_plane_state *plane_state; + struct drm_plane *plane = crtc->primary; + + if (plane->funcs->atomic_duplicate_state) + plane_state = plane->funcs->atomic_duplicate_state(plane); + else if (plane->state) + plane_state = kmemdup(plane->state, sizeof(*plane_state), + GFP_KERNEL); + else + plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); + if (!plane_state) + return -ENOMEM; + + plane_state->crtc = crtc; + plane_state->fb = crtc->primary->fb; + plane_state->crtc_x = 0; + plane_state->crtc_y = 0; + plane_state->crtc_h = crtc->mode.vdisplay; + plane_state->crtc_w = crtc->mode.hdisplay; + plane_state->src_x = x << 16; + plane_state->src_y = y << 16; + plane_state->src_h = crtc->mode.vdisplay << 16; + plane_state->src_w = crtc->mode.hdisplay << 16; + + return drm_plane_helper_commit(plane, plane_state, old_fb); +} +EXPORT_SYMBOL(drm_helper_crtc_mode_set_base); diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c index a202b89e14eb..a5a295872fbb 100644 --- a/drivers/gpu/drm/drm_plane_helper.c +++ b/drivers/gpu/drm/drm_plane_helper.c @@ -370,9 +370,9 @@ int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, } EXPORT_SYMBOL(drm_crtc_init); -static int -plane_commit(struct drm_plane *plane, struct drm_plane_state *plane_state, - struct drm_framebuffer *old_fb) +int drm_plane_helper_commit(struct drm_plane *plane, + struct drm_plane_state *plane_state, + struct drm_framebuffer *old_fb) { struct drm_plane_helper_funcs *plane_funcs; struct drm_crtc *crtc[2]; @@ -497,7 +497,7 @@ int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, plane_state->src_h = src_h; plane_state->src_w = src_w; - return plane_commit(plane, plane_state, plane->fb); + return drm_plane_helper_commit(plane, plane_state, plane->fb); } EXPORT_SYMBOL(drm_plane_helper_update); @@ -536,6 +536,6 @@ int drm_plane_helper_disable(struct drm_plane *plane) plane_state->crtc = NULL; plane_state->fb = NULL; - return plane_commit(plane, plane_state, plane->fb); + return drm_plane_helper_commit(plane, plane_state, plane->fb); } EXPORT_SYMBOL(drm_plane_helper_disable); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 56147409408d..53c8638592d4 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -230,6 +230,7 @@ struct drm_atomic_state; * struct drm_crtc_state - mutable CRTC state * @enable: whether the CRTC should be enabled, gates all other state * @planes_changed: for use by helpers and drivers when computing state updates + * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings * @mode: current mode timings * @event: optional pointer to a DRM event to signal upon completion of the * state update @@ -241,6 +242,9 @@ struct drm_crtc_state { /* computed state bits used by helpers and drivers */ bool planes_changed : 1; + /* adjusted_mode: for use by helpers and drivers */ + struct drm_display_mode adjusted_mode; + struct drm_display_mode mode; struct drm_pending_vblank_event *event; diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h index adec48b27aa5..7adbb65ea8ae 100644 --- a/include/drm/drm_crtc_helper.h +++ b/include/drm/drm_crtc_helper.h @@ -68,6 +68,7 @@ struct drm_crtc_helper_funcs { int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode, int x, int y, struct drm_framebuffer *old_fb); + void (*mode_set_nofb)(struct drm_crtc *crtc); /* Move the crtc on the current fb to the given position *optional* */ int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, @@ -167,6 +168,12 @@ static inline void drm_connector_helper_add(struct drm_connector *connector, extern void drm_helper_resume_force_mode(struct drm_device *dev); +int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, int x, int y, + struct drm_framebuffer *old_fb); +int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb); + /* drm_probe_helper.c */ extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, diff --git a/include/drm/drm_plane_helper.h b/include/drm/drm_plane_helper.h index 92bceccaa62a..c48f14d88690 100644 --- a/include/drm/drm_plane_helper.h +++ b/include/drm/drm_plane_helper.h @@ -103,4 +103,8 @@ int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, uint32_t src_w, uint32_t src_h); int drm_plane_helper_disable(struct drm_plane *plane); +/* For use by drm_crtc_helper.c */ +int drm_plane_helper_commit(struct drm_plane *plane, + struct drm_plane_state *plane_state, + struct drm_framebuffer *old_fb); #endif |