diff options
author | Sinclair Yeh <syeh@vmware.com> | 2017-05-19 22:57:06 -0700 |
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committer | Sinclair Yeh <syeh@vmware.com> | 2017-06-14 19:39:41 +0200 |
commit | 3c5a89bce93a6b19eb4580411196c04abff094bf (patch) | |
tree | 2b671166ad6ee92d523809b33211313b802c3eb4 /drm_modeset_helper.c | |
parent | 90732761ce998497c52a0997721e244a942b88ec (diff) |
vmwgfx: Update stand alone to v4.11
* Skipped update to drm_mm and drm_vma_manager because the switch to
using interval tree makes porting difficult.
* Added memdup_user_nul(), but replaced kmalloc_track_caller() with
kmalloc() due to a compilation error.
* Removed building and usage of debugfs_crc
* VMWGFX_COMPAT_NO_VAF no longer seems to be required
* Tested on
CentOS 6.5, RHEL 6.8: 2.6.32-696
RHEL 7.3: 3.10.0-514
Ubuntu 14.04: 4.2.0-35
Ubuntu 16.04: 4.4.0-78
Ubuntu 16.04: 4.12-rc1
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Diffstat (limited to 'drm_modeset_helper.c')
-rw-r--r-- | drm_modeset_helper.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/drm_modeset_helper.c b/drm_modeset_helper.c new file mode 100644 index 0000000..cf37390 --- /dev/null +++ b/drm_modeset_helper.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2016 Intel Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include "drm_modeset_helper.h" +#include "drm_plane_helper.h" + +/** + * DOC: aux kms helpers + * + * This helper library contains various one-off functions which don't really fit + * anywhere else in the DRM modeset helper library. + */ + +/** + * drm_helper_move_panel_connectors_to_head() - move panels to the front in the + * connector list + * @dev: drm device to operate on + * + * Some userspace presumes that the first connected connector is the main + * display, where it's supposed to display e.g. the login screen. For + * laptops, this should be the main panel. Use this function to sort all + * (eDP/LVDS/DSI) panels to the front of the connector list, instead of + * painstakingly trying to initialize them in the right order. + */ +void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) +{ + struct drm_connector *connector, *tmp; + struct list_head panel_list; + + INIT_LIST_HEAD(&panel_list); + + spin_lock_irq(&dev->mode_config.connector_list_lock); + list_for_each_entry_safe(connector, tmp, + &dev->mode_config.connector_list, head) { + if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || + connector->connector_type == DRM_MODE_CONNECTOR_eDP || + connector->connector_type == DRM_MODE_CONNECTOR_DSI) + list_move_tail(&connector->head, &panel_list); + } + + list_splice(&panel_list, &dev->mode_config.connector_list); + spin_unlock_irq(&dev->mode_config.connector_list_lock); +} +EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); + +/** + * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata + * @dev: DRM device + * @fb: drm_framebuffer object to fill out + * @mode_cmd: metadata from the userspace fb creation request + * + * This helper can be used in a drivers fb_create callback to pre-fill the fb's + * metadata fields. + */ +void drm_helper_mode_fill_fb_struct(struct drm_device *dev, + struct drm_framebuffer *fb, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + int i; + + fb->dev = dev; + fb->format = drm_format_info(mode_cmd->pixel_format); + fb->width = mode_cmd->width; + fb->height = mode_cmd->height; + for (i = 0; i < 4; i++) { + fb->pitches[i] = mode_cmd->pitches[i]; + fb->offsets[i] = mode_cmd->offsets[i]; + } + fb->modifier = mode_cmd->modifier[0]; + fb->flags = mode_cmd->flags; +} +EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); + +/* + * This is the minimal list of formats that seem to be safe for modeset use + * with all current DRM drivers. Most hardware can actually support more + * formats than this and drivers may specify a more accurate list when + * creating the primary plane. However drivers that still call + * drm_plane_init() will use this minimal format list as the default. + */ +static const uint32_t safe_modeset_formats[] = { + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ARGB8888, +}; + +static struct drm_plane *create_primary_plane(struct drm_device *dev) +{ + struct drm_plane *primary; + int ret; + + primary = kzalloc(sizeof(*primary), GFP_KERNEL); + if (primary == NULL) { + DRM_DEBUG_KMS("Failed to allocate primary plane\n"); + return NULL; + } + + /* + * Remove the format_default field from drm_plane when dropping + * this helper. + */ + primary->format_default = true; + + /* possible_crtc's will be filled in later by crtc_init */ + ret = drm_universal_plane_init(dev, primary, 0, + &drm_primary_helper_funcs, + safe_modeset_formats, + ARRAY_SIZE(safe_modeset_formats), + DRM_PLANE_TYPE_PRIMARY, NULL); + if (ret) { + kfree(primary); + primary = NULL; + } + + return primary; +} + +/** + * 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 = create_primary_plane(dev); + return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs, + NULL); +} +EXPORT_SYMBOL(drm_crtc_init); |