mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
0500c04ea1
The use of the drmP.h header file is deprecated. Remove use from all files in drm/* so people do not look there and follow a bad example. Build tested allyesconfig,allmodconfig on x86, arm etc. Including alpha that is as always more challenging than the rest. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <maxime.ripard@bootlin.com> Cc: Sean Paul <sean@poorly.run> Cc: David Airlie <airlied@linux.ie> Link: https://patchwork.freedesktop.org/patch/msgid/20190526173535.32701-8-sam@ravnborg.org
250 lines
7.7 KiB
C
250 lines
7.7 KiB
C
/*
|
|
* Copyright (C) 2014 Intel Corporation
|
|
*
|
|
* DRM universal plane helper functions
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/list.h>
|
|
|
|
#include <drm/drm_atomic.h>
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_atomic_uapi.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_device.h>
|
|
#include <drm/drm_encoder.h>
|
|
#include <drm/drm_plane_helper.h>
|
|
#include <drm/drm_rect.h>
|
|
|
|
#define SUBPIXEL_MASK 0xffff
|
|
|
|
/**
|
|
* DOC: overview
|
|
*
|
|
* This helper library has two parts. The first part has support to implement
|
|
* primary plane support on top of the normal CRTC configuration interface.
|
|
* Since the legacy &drm_mode_config_funcs.set_config interface ties the primary
|
|
* plane together with the CRTC state this does not allow userspace to disable
|
|
* the primary plane itself. The default primary plane only expose XRBG8888 and
|
|
* ARGB8888 as valid pixel formats for the attached framebuffer.
|
|
*
|
|
* Drivers are highly recommended to implement proper support for primary
|
|
* planes, and newly merged drivers must not rely upon these transitional
|
|
* helpers.
|
|
*
|
|
* The second part also implements transitional helpers which allow drivers to
|
|
* gradually switch to the atomic helper infrastructure for plane updates. Once
|
|
* that switch is complete drivers shouldn't use these any longer, instead using
|
|
* the proper legacy implementations for update and disable plane hooks provided
|
|
* by the atomic helpers.
|
|
*
|
|
* Again drivers are strongly urged to switch to the new interfaces.
|
|
*
|
|
* The plane helpers share the function table structures with other helpers,
|
|
* specifically also the atomic helpers. See &struct drm_plane_helper_funcs for
|
|
* the details.
|
|
*/
|
|
|
|
/*
|
|
* Returns the connectors currently associated with a CRTC. This function
|
|
* should be called twice: once with a NULL connector list to retrieve
|
|
* the list size, and once with the properly allocated list to be filled in.
|
|
*/
|
|
static int get_connectors_for_crtc(struct drm_crtc *crtc,
|
|
struct drm_connector **connector_list,
|
|
int num_connectors)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
int count = 0;
|
|
|
|
/*
|
|
* Note: Once we change the plane hooks to more fine-grained locking we
|
|
* need to grab the connection_mutex here to be able to make these
|
|
* checks.
|
|
*/
|
|
WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
|
|
|
|
drm_connector_list_iter_begin(dev, &conn_iter);
|
|
drm_for_each_connector_iter(connector, &conn_iter) {
|
|
if (connector->encoder && connector->encoder->crtc == crtc) {
|
|
if (connector_list != NULL && count < num_connectors)
|
|
*(connector_list++) = connector;
|
|
|
|
count++;
|
|
}
|
|
}
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
|
|
return count;
|
|
}
|
|
|
|
static int drm_plane_helper_check_update(struct drm_plane *plane,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_rect *src,
|
|
struct drm_rect *dst,
|
|
unsigned int rotation,
|
|
int min_scale,
|
|
int max_scale,
|
|
bool can_position,
|
|
bool can_update_disabled,
|
|
bool *visible)
|
|
{
|
|
struct drm_plane_state plane_state = {
|
|
.plane = plane,
|
|
.crtc = crtc,
|
|
.fb = fb,
|
|
.src_x = src->x1,
|
|
.src_y = src->y1,
|
|
.src_w = drm_rect_width(src),
|
|
.src_h = drm_rect_height(src),
|
|
.crtc_x = dst->x1,
|
|
.crtc_y = dst->y1,
|
|
.crtc_w = drm_rect_width(dst),
|
|
.crtc_h = drm_rect_height(dst),
|
|
.rotation = rotation,
|
|
.visible = *visible,
|
|
};
|
|
struct drm_crtc_state crtc_state = {
|
|
.crtc = crtc,
|
|
.enable = crtc->enabled,
|
|
.mode = crtc->mode,
|
|
};
|
|
int ret;
|
|
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
min_scale, max_scale,
|
|
can_position,
|
|
can_update_disabled);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*src = plane_state.src;
|
|
*dst = plane_state.dst;
|
|
*visible = plane_state.visible;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
int crtc_x, int crtc_y,
|
|
unsigned int crtc_w, unsigned int crtc_h,
|
|
uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h,
|
|
struct drm_modeset_acquire_ctx *ctx)
|
|
{
|
|
struct drm_mode_set set = {
|
|
.crtc = crtc,
|
|
.fb = fb,
|
|
.mode = &crtc->mode,
|
|
.x = src_x >> 16,
|
|
.y = src_y >> 16,
|
|
};
|
|
struct drm_rect src = {
|
|
.x1 = src_x,
|
|
.y1 = src_y,
|
|
.x2 = src_x + src_w,
|
|
.y2 = src_y + src_h,
|
|
};
|
|
struct drm_rect dest = {
|
|
.x1 = crtc_x,
|
|
.y1 = crtc_y,
|
|
.x2 = crtc_x + crtc_w,
|
|
.y2 = crtc_y + crtc_h,
|
|
};
|
|
struct drm_connector **connector_list;
|
|
int num_connectors, ret;
|
|
bool visible;
|
|
|
|
ret = drm_plane_helper_check_update(plane, crtc, fb,
|
|
&src, &dest,
|
|
DRM_MODE_ROTATE_0,
|
|
DRM_PLANE_HELPER_NO_SCALING,
|
|
DRM_PLANE_HELPER_NO_SCALING,
|
|
false, false, &visible);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!visible)
|
|
/*
|
|
* Primary plane isn't visible. Note that unless a driver
|
|
* provides their own disable function, this will just
|
|
* wind up returning -EINVAL to userspace.
|
|
*/
|
|
return plane->funcs->disable_plane(plane, ctx);
|
|
|
|
/* Find current connectors for CRTC */
|
|
num_connectors = get_connectors_for_crtc(crtc, NULL, 0);
|
|
BUG_ON(num_connectors == 0);
|
|
connector_list = kcalloc(num_connectors, sizeof(*connector_list),
|
|
GFP_KERNEL);
|
|
if (!connector_list)
|
|
return -ENOMEM;
|
|
get_connectors_for_crtc(crtc, connector_list, num_connectors);
|
|
|
|
set.connectors = connector_list;
|
|
set.num_connectors = num_connectors;
|
|
|
|
/*
|
|
* We call set_config() directly here rather than using
|
|
* drm_mode_set_config_internal. We're reprogramming the same
|
|
* connectors that were already in use, so we shouldn't need the extra
|
|
* cross-CRTC fb refcounting to accomodate stealing connectors.
|
|
* drm_mode_setplane() already handles the basic refcounting for the
|
|
* framebuffers involved in this operation.
|
|
*/
|
|
ret = crtc->funcs->set_config(&set, ctx);
|
|
|
|
kfree(connector_list);
|
|
return ret;
|
|
}
|
|
|
|
static int drm_primary_helper_disable(struct drm_plane *plane,
|
|
struct drm_modeset_acquire_ctx *ctx)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* drm_primary_helper_destroy() - Helper for primary plane destruction
|
|
* @plane: plane to destroy
|
|
*
|
|
* Provides a default plane destroy handler for primary planes. This handler
|
|
* is called during CRTC destruction. We disable the primary plane, remove
|
|
* it from the DRM plane list, and deallocate the plane structure.
|
|
*/
|
|
void drm_primary_helper_destroy(struct drm_plane *plane)
|
|
{
|
|
drm_plane_cleanup(plane);
|
|
kfree(plane);
|
|
}
|
|
EXPORT_SYMBOL(drm_primary_helper_destroy);
|
|
|
|
const struct drm_plane_funcs drm_primary_helper_funcs = {
|
|
.update_plane = drm_primary_helper_update,
|
|
.disable_plane = drm_primary_helper_disable,
|
|
.destroy = drm_primary_helper_destroy,
|
|
};
|
|
EXPORT_SYMBOL(drm_primary_helper_funcs);
|