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weston/src/compositor-drm.c

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/*
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2011 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <errno.h>
#include <stdlib.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/input.h>
#include <assert.h>
#include <sys/mman.h>
#include <time.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
#include <gbm.h>
#include <libbacklight.h>
#include <libudev.h>
#include "compositor.h"
#include "gl-renderer.h"
#include "pixman-renderer.h"
#include "udev-seat.h"
#include "launcher-util.h"
#ifndef DRM_CAP_TIMESTAMP_MONOTONIC
#define DRM_CAP_TIMESTAMP_MONOTONIC 0x6
#endif
static int option_current_mode = 0;
enum output_config {
OUTPUT_CONFIG_INVALID = 0,
OUTPUT_CONFIG_OFF,
OUTPUT_CONFIG_PREFERRED,
OUTPUT_CONFIG_CURRENT,
OUTPUT_CONFIG_MODE,
OUTPUT_CONFIG_MODELINE
};
struct drm_compositor {
struct weston_compositor base;
struct udev *udev;
struct wl_event_source *drm_source;
struct udev_monitor *udev_monitor;
struct wl_event_source *udev_drm_source;
struct {
int id;
int fd;
} drm;
struct gbm_device *gbm;
uint32_t *crtcs;
int num_crtcs;
uint32_t crtc_allocator;
uint32_t connector_allocator;
struct tty *tty;
/* we need these parameters in order to not fail drmModeAddFB2()
* due to out of bounds dimensions, and then mistakenly set
* sprites_are_broken:
*/
uint32_t min_width, max_width;
uint32_t min_height, max_height;
int no_addfb2;
struct wl_list sprite_list;
int sprites_are_broken;
int sprites_hidden;
int cursors_are_broken;
int use_pixman;
uint32_t prev_state;
clockid_t clock;
};
struct drm_mode {
struct weston_mode base;
drmModeModeInfo mode_info;
};
struct drm_output;
struct drm_fb {
struct drm_output *output;
uint32_t fb_id, stride, handle, size;
int fd;
int is_client_buffer;
struct weston_buffer_reference buffer_ref;
/* Used by gbm fbs */
struct gbm_bo *bo;
/* Used by dumb fbs */
void *map;
};
struct drm_edid {
char eisa_id[13];
char monitor_name[13];
char pnp_id[5];
char serial_number[13];
};
struct drm_output {
struct weston_output base;
uint32_t crtc_id;
int pipe;
uint32_t connector_id;
drmModeCrtcPtr original_crtc;
struct drm_edid edid;
drmModePropertyPtr dpms_prop;
int vblank_pending;
int page_flip_pending;
struct gbm_surface *surface;
struct gbm_bo *cursor_bo[2];
struct weston_plane cursor_plane;
struct weston_plane fb_plane;
struct weston_surface *cursor_surface;
int current_cursor;
struct drm_fb *current, *next;
struct backlight *backlight;
struct drm_fb *dumb[2];
pixman_image_t *image[2];
int current_image;
pixman_region32_t previous_damage;
};
/*
* An output has a primary display plane plus zero or more sprites for
* blending display contents.
*/
struct drm_sprite {
struct wl_list link;
struct weston_plane plane;
struct drm_fb *current, *next;
struct drm_output *output;
struct drm_compositor *compositor;
uint32_t possible_crtcs;
uint32_t plane_id;
uint32_t count_formats;
int32_t src_x, src_y;
uint32_t src_w, src_h;
uint32_t dest_x, dest_y;
uint32_t dest_w, dest_h;
uint32_t formats[];
};
static const char default_seat[] = "seat0";
static void
drm_output_set_cursor(struct drm_output *output);
static int
drm_sprite_crtc_supported(struct weston_output *output_base, uint32_t supported)
{
struct weston_compositor *ec = output_base->compositor;
struct drm_compositor *c =(struct drm_compositor *) ec;
struct drm_output *output = (struct drm_output *) output_base;
int crtc;
for (crtc = 0; crtc < c->num_crtcs; crtc++) {
if (c->crtcs[crtc] != output->crtc_id)
continue;
if (supported & (1 << crtc))
return -1;
}
return 0;
}
static void
drm_fb_destroy_callback(struct gbm_bo *bo, void *data)
{
struct drm_fb *fb = data;
struct gbm_device *gbm = gbm_bo_get_device(bo);
if (fb->fb_id)
drmModeRmFB(gbm_device_get_fd(gbm), fb->fb_id);
weston_buffer_reference(&fb->buffer_ref, NULL);
free(data);
}
static struct drm_fb *
drm_fb_create_dumb(struct drm_compositor *ec, unsigned width, unsigned height)
{
struct drm_fb *fb;
int ret;
struct drm_mode_create_dumb create_arg;
struct drm_mode_destroy_dumb destroy_arg;
struct drm_mode_map_dumb map_arg;
fb = calloc(1, sizeof *fb);
if (!fb)
return NULL;
create_arg.bpp = 32;
create_arg.width = width;
create_arg.height = height;
ret = drmIoctl(ec->drm.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg);
if (ret)
goto err_fb;
fb->handle = create_arg.handle;
fb->stride = create_arg.pitch;
fb->size = create_arg.size;
fb->fd = ec->drm.fd;
ret = drmModeAddFB(ec->drm.fd, width, height, 24, 32,
fb->stride, fb->handle, &fb->fb_id);
if (ret)
goto err_bo;
memset(&map_arg, 0, sizeof(map_arg));
map_arg.handle = fb->handle;
ret = drmIoctl(fb->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
if (ret)
goto err_add_fb;
fb->map = mmap(0, fb->size, PROT_WRITE,
MAP_SHARED, ec->drm.fd, map_arg.offset);
if (fb->map == MAP_FAILED)
goto err_add_fb;
return fb;
err_add_fb:
drmModeRmFB(ec->drm.fd, fb->fb_id);
err_bo:
memset(&destroy_arg, 0, sizeof(destroy_arg));
destroy_arg.handle = create_arg.handle;
drmIoctl(ec->drm.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
err_fb:
free(fb);
return NULL;
}
static void
drm_fb_destroy_dumb(struct drm_fb *fb)
{
struct drm_mode_destroy_dumb destroy_arg;
if (!fb->map)
return;
if (fb->fb_id)
drmModeRmFB(fb->fd, fb->fb_id);
weston_buffer_reference(&fb->buffer_ref, NULL);
munmap(fb->map, fb->size);
memset(&destroy_arg, 0, sizeof(destroy_arg));
destroy_arg.handle = fb->handle;
drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
free(fb);
}
static struct drm_fb *
drm_fb_get_from_bo(struct gbm_bo *bo,
struct drm_compositor *compositor, uint32_t format)
{
struct drm_fb *fb = gbm_bo_get_user_data(bo);
uint32_t width, height;
uint32_t handles[4], pitches[4], offsets[4];
int ret;
if (fb)
return fb;
fb = calloc(1, sizeof *fb);
if (!fb)
return NULL;
fb->bo = bo;
width = gbm_bo_get_width(bo);
height = gbm_bo_get_height(bo);
fb->stride = gbm_bo_get_stride(bo);
fb->handle = gbm_bo_get_handle(bo).u32;
fb->size = fb->stride * height;
fb->fd = compositor->drm.fd;
if (compositor->min_width > width || width > compositor->max_width ||
compositor->min_height > height ||
height > compositor->max_height) {
weston_log("bo geometry out of bounds\n");
goto err_free;
}
ret = -1;
if (format && !compositor->no_addfb2) {
handles[0] = fb->handle;
pitches[0] = fb->stride;
offsets[0] = 0;
ret = drmModeAddFB2(compositor->drm.fd, width, height,
format, handles, pitches, offsets,
&fb->fb_id, 0);
if (ret) {
weston_log("addfb2 failed: %m\n");
compositor->no_addfb2 = 1;
compositor->sprites_are_broken = 1;
}
}
if (ret)
ret = drmModeAddFB(compositor->drm.fd, width, height, 24, 32,
fb->stride, fb->handle, &fb->fb_id);
if (ret) {
weston_log("failed to create kms fb: %m\n");
goto err_free;
}
gbm_bo_set_user_data(bo, fb, drm_fb_destroy_callback);
return fb;
err_free:
free(fb);
return NULL;
}
static void
drm_fb_set_buffer(struct drm_fb *fb, struct wl_buffer *buffer)
{
assert(fb->buffer_ref.buffer == NULL);
fb->is_client_buffer = 1;
weston_buffer_reference(&fb->buffer_ref, buffer);
}
static void
drm_output_release_fb(struct drm_output *output, struct drm_fb *fb)
{
if (!fb)
return;
if (fb->map &&
(fb != output->dumb[0] && fb != output->dumb[1])) {
drm_fb_destroy_dumb(fb);
} else if (fb->bo) {
if (fb->is_client_buffer)
gbm_bo_destroy(fb->bo);
else
gbm_surface_release_buffer(output->surface,
output->current->bo);
}
}
static uint32_t
drm_output_check_scanout_format(struct drm_output *output,
struct weston_surface *es, struct gbm_bo *bo)
{
uint32_t format;
pixman_region32_t r;
format = gbm_bo_get_format(bo);
switch (format) {
case GBM_FORMAT_XRGB8888:
return format;
case GBM_FORMAT_ARGB8888:
/* We can only scanout an ARGB buffer if the surface's
* opaque region covers the whole output */
pixman_region32_init(&r);
pixman_region32_subtract(&r, &output->base.region,
&es->opaque);
if (!pixman_region32_not_empty(&r))
format = GBM_FORMAT_XRGB8888;
else
format = 0;
pixman_region32_fini(&r);
return format;
default:
return 0;
}
}
static struct weston_plane *
drm_output_prepare_scanout_surface(struct weston_output *_output,
struct weston_surface *es)
{
struct drm_output *output = (struct drm_output *) _output;
struct drm_compositor *c =
(struct drm_compositor *) output->base.compositor;
struct wl_buffer *buffer = es->buffer_ref.buffer;
struct gbm_bo *bo;
uint32_t format;
if (es->geometry.x != output->base.x ||
es->geometry.y != output->base.y ||
buffer == NULL || c->gbm == NULL ||
buffer->width != output->base.current->width ||
buffer->height != output->base.current->height ||
output->base.transform != es->buffer_transform ||
es->transform.enabled)
return NULL;
bo = gbm_bo_import(c->gbm, GBM_BO_IMPORT_WL_BUFFER,
buffer, GBM_BO_USE_SCANOUT);
/* Unable to use the buffer for scanout */
if (!bo)
return NULL;
format = drm_output_check_scanout_format(output, es, bo);
if (format == 0) {
gbm_bo_destroy(bo);
return NULL;
}
output->next = drm_fb_get_from_bo(bo, c, format);
if (!output->next) {
gbm_bo_destroy(bo);
return NULL;
}
drm_fb_set_buffer(output->next, buffer);
return &output->fb_plane;
}
static void
drm_output_render_gl(struct drm_output *output, pixman_region32_t *damage)
{
struct drm_compositor *c =
(struct drm_compositor *) output->base.compositor;
struct gbm_bo *bo;
c->base.renderer->repaint_output(&output->base, damage);
bo = gbm_surface_lock_front_buffer(output->surface);
if (!bo) {
weston_log("failed to lock front buffer: %m\n");
return;
}
output->next = drm_fb_get_from_bo(bo, c, GBM_FORMAT_XRGB8888);
if (!output->next) {
weston_log("failed to get drm_fb for bo\n");
gbm_surface_release_buffer(output->surface, bo);
return;
}
}
static void
drm_output_render_pixman(struct drm_output *output, pixman_region32_t *damage)
{
struct weston_compositor *ec = output->base.compositor;
pixman_region32_t total_damage, previous_damage;
pixman_region32_init(&total_damage);
pixman_region32_init(&previous_damage);
pixman_region32_copy(&previous_damage, damage);
pixman_region32_union(&total_damage, damage, &output->previous_damage);
pixman_region32_copy(&output->previous_damage, &previous_damage);
output->current_image ^= 1;
output->next = output->dumb[output->current_image];
pixman_renderer_output_set_buffer(&output->base,
output->image[output->current_image]);
ec->renderer->repaint_output(&output->base, &total_damage);
pixman_region32_fini(&total_damage);
pixman_region32_fini(&previous_damage);
}
static void
drm_output_render(struct drm_output *output, pixman_region32_t *damage)
{
struct drm_compositor *c =
(struct drm_compositor *) output->base.compositor;
if (c->use_pixman)
drm_output_render_pixman(output, damage);
else
drm_output_render_gl(output, damage);
pixman_region32_subtract(&c->base.primary_plane.damage,
&c->base.primary_plane.damage, damage);
}
static void
drm_output_set_gamma(struct weston_output *output_base,
uint16_t size, uint16_t *r, uint16_t *g, uint16_t *b)
{
int rc;
struct drm_output *output = (struct drm_output *) output_base;
struct drm_compositor *compositor = (struct drm_compositor *) output->base.compositor;
/* check */
if (output_base->gamma_size != size)
return;
if (!output->original_crtc)
return;
rc = drmModeCrtcSetGamma(compositor->drm.fd,
output->crtc_id,
size, r, g, b);
if (rc)
weston_log("set gamma failed: %m\n");
}
static void
drm_output_repaint(struct weston_output *output_base,
pixman_region32_t *damage)
{
struct drm_output *output = (struct drm_output *) output_base;
struct drm_compositor *compositor =
(struct drm_compositor *) output->base.compositor;
struct drm_sprite *s;
struct drm_mode *mode;
int ret = 0;
if (!output->next)
drm_output_render(output, damage);
if (!output->next)
return;
mode = container_of(output->base.current, struct drm_mode, base);
if (!output->current) {
ret = drmModeSetCrtc(compositor->drm.fd, output->crtc_id,
output->next->fb_id, 0, 0,
&output->connector_id, 1,
&mode->mode_info);
if (ret) {
weston_log("set mode failed: %m\n");
return;
}
output_base->set_dpms(output_base, WESTON_DPMS_ON);
}
if (drmModePageFlip(compositor->drm.fd, output->crtc_id,
output->next->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, output) < 0) {
weston_log("queueing pageflip failed: %m\n");
return;
}
output->page_flip_pending = 1;
drm_output_set_cursor(output);
/*
* Now, update all the sprite surfaces
*/
wl_list_for_each(s, &compositor->sprite_list, link) {
uint32_t flags = 0, fb_id = 0;
drmVBlank vbl = {
.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT,
.request.sequence = 1,
};
if ((!s->current && !s->next) ||
!drm_sprite_crtc_supported(output_base, s->possible_crtcs))
continue;
if (s->next && !compositor->sprites_hidden)
fb_id = s->next->fb_id;
ret = drmModeSetPlane(compositor->drm.fd, s->plane_id,
output->crtc_id, fb_id, flags,
s->dest_x, s->dest_y,
s->dest_w, s->dest_h,
s->src_x, s->src_y,
s->src_w, s->src_h);
if (ret)
weston_log("setplane failed: %d: %s\n",
ret, strerror(errno));
if (output->pipe > 0)
vbl.request.type |= DRM_VBLANK_SECONDARY;
/*
* Queue a vblank signal so we know when the surface
* becomes active on the display or has been replaced.
*/
vbl.request.signal = (unsigned long)s;
ret = drmWaitVBlank(compositor->drm.fd, &vbl);
if (ret) {
weston_log("vblank event request failed: %d: %s\n",
ret, strerror(errno));
}
s->output = output;
output->vblank_pending = 1;
}
return;
}
static void
drm_output_start_repaint_loop(struct weston_output *output_base)
{
struct drm_output *output = (struct drm_output *) output_base;
struct drm_compositor *compositor = (struct drm_compositor *)
output_base->compositor;
uint32_t fb_id;
struct timespec ts;
if (!output->current) {
/* We can't page flip if there's no mode set */
uint32_t msec;
clock_gettime(compositor->clock, &ts);
msec = ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
weston_output_finish_frame(output_base, msec);
return;
}
fb_id = output->current->fb_id;
if (drmModePageFlip(compositor->drm.fd, output->crtc_id, fb_id,
DRM_MODE_PAGE_FLIP_EVENT, output) < 0) {
weston_log("queueing pageflip failed: %m\n");
return;
}
}
static void
vblank_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec,
void *data)
{
struct drm_sprite *s = (struct drm_sprite *)data;
struct drm_output *output = s->output;
uint32_t msecs;
output->vblank_pending = 0;
drm_output_release_fb(output, s->current);
s->current = s->next;
s->next = NULL;
if (!output->page_flip_pending) {
msecs = sec * 1000 + usec / 1000;
weston_output_finish_frame(&output->base, msecs);
}
}
static void
page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec, void *data)
{
struct drm_output *output = (struct drm_output *) data;
uint32_t msecs;
/* We don't set page_flip_pending on start_repaint_loop, in that case
* we just want to page flip to the current buffer to get an accurate
* timestamp */
if (output->page_flip_pending) {
drm_output_release_fb(output, output->current);
output->current = output->next;
output->next = NULL;
}
output->page_flip_pending = 0;
if (!output->vblank_pending) {
msecs = sec * 1000 + usec / 1000;
weston_output_finish_frame(&output->base, msecs);
}
}
static uint32_t
drm_output_check_sprite_format(struct drm_sprite *s,
struct weston_surface *es, struct gbm_bo *bo)
{
uint32_t i, format;
format = gbm_bo_get_format(bo);
if (format == GBM_FORMAT_ARGB8888) {
pixman_region32_t r;
pixman_region32_init_rect(&r, 0, 0,
es->geometry.width,
es->geometry.height);
pixman_region32_subtract(&r, &r, &es->opaque);
if (!pixman_region32_not_empty(&r))
format = GBM_FORMAT_XRGB8888;
pixman_region32_fini(&r);
}
for (i = 0; i < s->count_formats; i++)
if (s->formats[i] == format)
return format;
return 0;
}
static int
drm_surface_transform_supported(struct weston_surface *es)
{
return !es->transform.enabled ||
(es->transform.matrix.type < WESTON_MATRIX_TRANSFORM_ROTATE);
}
static struct weston_plane *
drm_output_prepare_overlay_surface(struct weston_output *output_base,
struct weston_surface *es)
{
struct weston_compositor *ec = output_base->compositor;
struct drm_compositor *c =(struct drm_compositor *) ec;
struct drm_sprite *s;
int found = 0;
struct gbm_bo *bo;
pixman_region32_t dest_rect, src_rect;
pixman_box32_t *box, tbox;
uint32_t format;
wl_fixed_t sx1, sy1, sx2, sy2;
if (c->gbm == NULL)
return NULL;
if (es->buffer_transform != output_base->transform)
return NULL;
if (es->buffer_scale != output_base->scale)
return NULL;
if (c->sprites_are_broken)
return NULL;
if (es->output_mask != (1u << output_base->id))
return NULL;
if (es->buffer_ref.buffer == NULL)
return NULL;
if (es->alpha != 1.0f)
return NULL;
if (wl_buffer_is_shm(es->buffer_ref.buffer))
return NULL;
if (!drm_surface_transform_supported(es))
return NULL;
wl_list_for_each(s, &c->sprite_list, link) {
if (!drm_sprite_crtc_supported(output_base, s->possible_crtcs))
continue;
if (!s->next) {
found = 1;
break;
}
}
/* No sprites available */
if (!found)
return NULL;
bo = gbm_bo_import(c->gbm, GBM_BO_IMPORT_WL_BUFFER,
es->buffer_ref.buffer, GBM_BO_USE_SCANOUT);
if (!bo)
return NULL;
format = drm_output_check_sprite_format(s, es, bo);
if (format == 0) {
gbm_bo_destroy(bo);
return NULL;
}
s->next = drm_fb_get_from_bo(bo, c, format);
if (!s->next) {
gbm_bo_destroy(bo);
return NULL;
}
drm_fb_set_buffer(s->next, es->buffer_ref.buffer);
box = pixman_region32_extents(&es->transform.boundingbox);
s->plane.x = box->x1;
s->plane.y = box->y1;
/*
* Calculate the source & dest rects properly based on actual
* position (note the caller has called weston_surface_update_transform()
* for us already).
*/
pixman_region32_init(&dest_rect);
pixman_region32_intersect(&dest_rect, &es->transform.boundingbox,
&output_base->region);
pixman_region32_translate(&dest_rect, -output_base->x, -output_base->y);
box = pixman_region32_extents(&dest_rect);
tbox = weston_transformed_rect(output_base->width,
output_base->height,
output_base->transform,
output_base->scale,
*box);
s->dest_x = tbox.x1;
s->dest_y = tbox.y1;
s->dest_w = tbox.x2 - tbox.x1;
s->dest_h = tbox.y2 - tbox.y1;
pixman_region32_fini(&dest_rect);
pixman_region32_init(&src_rect);
pixman_region32_intersect(&src_rect, &es->transform.boundingbox,
&output_base->region);
box = pixman_region32_extents(&src_rect);
weston_surface_from_global_fixed(es,
wl_fixed_from_int(box->x1),
wl_fixed_from_int(box->y1),
&sx1, &sy1);
weston_surface_from_global_fixed(es,
wl_fixed_from_int(box->x2),
wl_fixed_from_int(box->y2),
&sx2, &sy2);
if (sx1 < 0)
sx1 = 0;
if (sy1 < 0)
sy1 = 0;
if (sx2 > wl_fixed_from_int(es->geometry.width))
sx2 = wl_fixed_from_int(es->geometry.width);
if (sy2 > wl_fixed_from_int(es->geometry.height))
sy2 = wl_fixed_from_int(es->geometry.height);
tbox.x1 = sx1;
tbox.y1 = sy1;
tbox.x2 = sx2;
tbox.y2 = sy2;
tbox = weston_transformed_rect(wl_fixed_from_int(es->geometry.width),
wl_fixed_from_int(es->geometry.height),
es->buffer_transform, es->buffer_scale, tbox);
s->src_x = tbox.x1 << 8;
s->src_y = tbox.y1 << 8;
s->src_w = (tbox.x2 - tbox.x1) << 8;
s->src_h = (tbox.y2 - tbox.y1) << 8;
pixman_region32_fini(&src_rect);
return &s->plane;
}
static struct weston_plane *
drm_output_prepare_cursor_surface(struct weston_output *output_base,
struct weston_surface *es)
{
struct drm_compositor *c =
(struct drm_compositor *) output_base->compositor;
struct drm_output *output = (struct drm_output *) output_base;
if (c->gbm == NULL)
return NULL;
if (output->base.transform != WL_OUTPUT_TRANSFORM_NORMAL)
return NULL;
if (output->cursor_surface)
return NULL;
if (es->output_mask != (1u << output_base->id))
return NULL;
if (c->cursors_are_broken)
return NULL;
if (es->buffer_ref.buffer == NULL ||
!wl_buffer_is_shm(es->buffer_ref.buffer) ||
es->geometry.width > 64 || es->geometry.height > 64)
return NULL;
output->cursor_surface = es;
return &output->cursor_plane;
}
static void
drm_output_set_cursor(struct drm_output *output)
{
struct weston_surface *es = output->cursor_surface;
struct drm_compositor *c =
(struct drm_compositor *) output->base.compositor;
EGLint handle, stride;
struct gbm_bo *bo;
uint32_t buf[64 * 64];
unsigned char *s;
int i, x, y;
output->cursor_surface = NULL;
if (es == NULL) {
drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
return;
}
if (es->buffer_ref.buffer &&
pixman_region32_not_empty(&output->cursor_plane.damage)) {
pixman_region32_fini(&output->cursor_plane.damage);
pixman_region32_init(&output->cursor_plane.damage);
output->current_cursor ^= 1;
bo = output->cursor_bo[output->current_cursor];
memset(buf, 0, sizeof buf);
stride = wl_shm_buffer_get_stride(es->buffer_ref.buffer);
s = wl_shm_buffer_get_data(es->buffer_ref.buffer);
for (i = 0; i < es->geometry.height; i++)
memcpy(buf + i * 64, s + i * stride,
es->geometry.width * 4);
if (gbm_bo_write(bo, buf, sizeof buf) < 0)
weston_log("failed update cursor: %m\n");
handle = gbm_bo_get_handle(bo).s32;
if (drmModeSetCursor(c->drm.fd,
output->crtc_id, handle, 64, 64)) {
weston_log("failed to set cursor: %m\n");
c->cursors_are_broken = 1;
}
}
x = (es->geometry.x - output->base.x) * output->base.scale;
y = (es->geometry.y - output->base.y) * output->base.scale;
if (output->cursor_plane.x != x || output->cursor_plane.y != y) {
if (drmModeMoveCursor(c->drm.fd, output->crtc_id, x, y)) {
weston_log("failed to move cursor: %m\n");
c->cursors_are_broken = 1;
}
output->cursor_plane.x = x;
output->cursor_plane.y = y;
}
}
static void
drm_assign_planes(struct weston_output *output)
{
struct drm_compositor *c =
(struct drm_compositor *) output->compositor;
struct weston_surface *es, *next;
pixman_region32_t overlap, surface_overlap;
struct weston_plane *primary, *next_plane;
/*
* Find a surface for each sprite in the output using some heuristics:
* 1) size
* 2) frequency of update
* 3) opacity (though some hw might support alpha blending)
* 4) clipping (this can be fixed with color keys)
*
* The idea is to save on blitting since this should save power.
* If we can get a large video surface on the sprite for example,
* the main display surface may not need to update at all, and
* the client buffer can be used directly for the sprite surface
* as we do for flipping full screen surfaces.
*/
pixman_region32_init(&overlap);
primary = &c->base.primary_plane;
wl_list_for_each_safe(es, next, &c->base.surface_list, link) {
/* test whether this buffer can ever go into a plane:
* non-shm, or small enough to be a cursor
*/
if ((es->buffer_ref.buffer &&
!wl_buffer_is_shm(es->buffer_ref.buffer)) ||
(es->geometry.width <= 64 && es->geometry.height <= 64))
es->keep_buffer = 1;
else
es->keep_buffer = 0;
pixman_region32_init(&surface_overlap);
pixman_region32_intersect(&surface_overlap, &overlap,
&es->transform.boundingbox);
next_plane = NULL;
if (pixman_region32_not_empty(&surface_overlap))
next_plane = primary;
if (next_plane == NULL)
next_plane = drm_output_prepare_cursor_surface(output, es);
if (next_plane == NULL)
next_plane = drm_output_prepare_scanout_surface(output, es);
if (next_plane == NULL)
next_plane = drm_output_prepare_overlay_surface(output, es);
if (next_plane == NULL)
next_plane = primary;
weston_surface_move_to_plane(es, next_plane);
if (next_plane == primary)
pixman_region32_union(&overlap, &overlap,
&es->transform.boundingbox);
pixman_region32_fini(&surface_overlap);
}
pixman_region32_fini(&overlap);
}
static void
drm_output_fini_pixman(struct drm_output *output);
static void
drm_output_destroy(struct weston_output *output_base)
{
struct drm_output *output = (struct drm_output *) output_base;
struct drm_compositor *c =
(struct drm_compositor *) output->base.compositor;
drmModeCrtcPtr origcrtc = output->original_crtc;
if (output->backlight)
backlight_destroy(output->backlight);
drmModeFreeProperty(output->dpms_prop);
/* Turn off hardware cursor */
drmModeSetCursor(c->drm.fd, output->crtc_id, 0, 0, 0);
/* Restore original CRTC state */
drmModeSetCrtc(c->drm.fd, origcrtc->crtc_id, origcrtc->buffer_id,
origcrtc->x, origcrtc->y,
&output->connector_id, 1, &origcrtc->mode);
drmModeFreeCrtc(origcrtc);
c->crtc_allocator &= ~(1 << output->crtc_id);
c->connector_allocator &= ~(1 << output->connector_id);
if (c->use_pixman) {
drm_output_fini_pixman(output);
} else {
gl_renderer_output_destroy(output_base);
gbm_surface_destroy(output->surface);
}
weston_plane_release(&output->fb_plane);
weston_plane_release(&output->cursor_plane);
weston_output_destroy(&output->base);
wl_list_remove(&output->base.link);
free(output);
}
static struct drm_mode *
choose_mode (struct drm_output *output, struct weston_mode *target_mode)
{
struct drm_mode *tmp_mode = NULL, *mode;
if (output->base.current->width == target_mode->width &&
output->base.current->height == target_mode->height &&
(output->base.current->refresh == target_mode->refresh ||
target_mode->refresh == 0))
return (struct drm_mode *)output->base.current;
wl_list_for_each(mode, &output->base.mode_list, base.link) {
if (mode->mode_info.hdisplay == target_mode->width &&
mode->mode_info.vdisplay == target_mode->height) {
if (mode->mode_info.vrefresh == target_mode->refresh ||
target_mode->refresh == 0) {
return mode;
} else if (!tmp_mode)
tmp_mode = mode;
}
}
return tmp_mode;
}
static int
drm_output_init_egl(struct drm_output *output, struct drm_compositor *ec);
static int
drm_output_init_pixman(struct drm_output *output, struct drm_compositor *c);
static int
drm_output_switch_mode(struct weston_output *output_base, struct weston_mode *mode)
{
struct drm_output *output;
struct drm_mode *drm_mode;
struct drm_compositor *ec;
if (output_base == NULL) {
weston_log("output is NULL.\n");
return -1;
}
if (mode == NULL) {
weston_log("mode is NULL.\n");
return -1;
}
ec = (struct drm_compositor *)output_base->compositor;
output = (struct drm_output *)output_base;
drm_mode = choose_mode (output, mode);
if (!drm_mode) {
weston_log("%s, invalid resolution:%dx%d\n", __func__, mode->width, mode->height);
return -1;
}
if (&drm_mode->base == output->base.current)
return 0;
output->base.current->flags = 0;
output->base.current = &drm_mode->base;
output->base.current->flags =
WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
/* reset rendering stuff. */
drm_output_release_fb(output, output->current);
drm_output_release_fb(output, output->next);
output->current = output->next = NULL;
if (ec->use_pixman) {
drm_output_fini_pixman(output);
if (drm_output_init_pixman(output, ec) < 0) {
weston_log("failed to init output pixman state with "
"new mode\n");
return -1;
}
} else {
gl_renderer_output_destroy(&output->base);
gbm_surface_destroy(output->surface);
if (drm_output_init_egl(output, ec) < 0) {
weston_log("failed to init output egl state with "
"new mode");
return -1;
}
}
return 0;
}
static int
on_drm_input(int fd, uint32_t mask, void *data)
{
drmEventContext evctx;
memset(&evctx, 0, sizeof evctx);
evctx.version = DRM_EVENT_CONTEXT_VERSION;
evctx.page_flip_handler = page_flip_handler;
evctx.vblank_handler = vblank_handler;
drmHandleEvent(fd, &evctx);
return 1;
}
static int
init_drm(struct drm_compositor *ec, struct udev_device *device)
{
const char *filename, *sysnum;
uint64_t cap;
int fd, ret;
sysnum = udev_device_get_sysnum(device);
if (sysnum)
ec->drm.id = atoi(sysnum);
if (!sysnum || ec->drm.id < 0) {
weston_log("cannot get device sysnum\n");
return -1;
}
filename = udev_device_get_devnode(device);
fd = open(filename, O_RDWR | O_CLOEXEC);
if (fd < 0) {
/* Probably permissions error */
weston_log("couldn't open %s, skipping\n",
udev_device_get_devnode(device));
return -1;
}
weston_log("using %s\n", filename);
ec->drm.fd = fd;
ret = drmGetCap(fd, DRM_CAP_TIMESTAMP_MONOTONIC, &cap);
if (ret == 0 && cap == 1)
ec->clock = CLOCK_MONOTONIC;
else
ec->clock = CLOCK_REALTIME;
return 0;
}
static int
init_egl(struct drm_compositor *ec)
{
ec->gbm = gbm_create_device(ec->drm.fd);
if (!ec->gbm)
return -1;
if (gl_renderer_create(&ec->base, ec->gbm, gl_renderer_opaque_attribs,
NULL) < 0) {
gbm_device_destroy(ec->gbm);
return -1;
}
return 0;
}
static int
init_pixman(struct drm_compositor *ec)
{
return pixman_renderer_init(&ec->base);
}
static struct drm_mode *
drm_output_add_mode(struct drm_output *output, drmModeModeInfo *info)
{
struct drm_mode *mode;
uint64_t refresh;
mode = malloc(sizeof *mode);
if (mode == NULL)
return NULL;
mode->base.flags = 0;
mode->base.width = info->hdisplay;
mode->base.height = info->vdisplay;
/* Calculate higher precision (mHz) refresh rate */
refresh = (info->clock * 1000000LL / info->htotal +
info->vtotal / 2) / info->vtotal;
if (info->flags & DRM_MODE_FLAG_INTERLACE)
refresh *= 2;
if (info->flags & DRM_MODE_FLAG_DBLSCAN)
refresh /= 2;
if (info->vscan > 1)
refresh /= info->vscan;
mode->base.refresh = refresh;
mode->mode_info = *info;
if (info->type & DRM_MODE_TYPE_PREFERRED)
mode->base.flags |= WL_OUTPUT_MODE_PREFERRED;
wl_list_insert(output->base.mode_list.prev, &mode->base.link);
return mode;
}
static int
drm_subpixel_to_wayland(int drm_value)
{
switch (drm_value) {
default:
case DRM_MODE_SUBPIXEL_UNKNOWN:
return WL_OUTPUT_SUBPIXEL_UNKNOWN;
case DRM_MODE_SUBPIXEL_NONE:
return WL_OUTPUT_SUBPIXEL_NONE;
case DRM_MODE_SUBPIXEL_HORIZONTAL_RGB:
return WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB;
case DRM_MODE_SUBPIXEL_HORIZONTAL_BGR:
return WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR;
case DRM_MODE_SUBPIXEL_VERTICAL_RGB:
return WL_OUTPUT_SUBPIXEL_VERTICAL_RGB;
case DRM_MODE_SUBPIXEL_VERTICAL_BGR:
return WL_OUTPUT_SUBPIXEL_VERTICAL_BGR;
}
}
/* returns a value between 0-255 range, where higher is brighter */
static uint32_t
drm_get_backlight(struct drm_output *output)
{
long brightness, max_brightness, norm;
brightness = backlight_get_brightness(output->backlight);
max_brightness = backlight_get_max_brightness(output->backlight);
/* convert it on a scale of 0 to 255 */
norm = (brightness * 255)/(max_brightness);
return (uint32_t) norm;
}
/* values accepted are between 0-255 range */
static void
drm_set_backlight(struct weston_output *output_base, uint32_t value)
{
struct drm_output *output = (struct drm_output *) output_base;
long max_brightness, new_brightness;
if (!output->backlight)
return;
if (value > 255)
return;
max_brightness = backlight_get_max_brightness(output->backlight);
/* get denormalized value */
new_brightness = (value * max_brightness) / 255;
backlight_set_brightness(output->backlight, new_brightness);
}
static drmModePropertyPtr
drm_get_prop(int fd, drmModeConnectorPtr connector, const char *name)
{
drmModePropertyPtr props;
int i;
for (i = 0; i < connector->count_props; i++) {
props = drmModeGetProperty(fd, connector->props[i]);
if (!props)
continue;
if (!strcmp(props->name, name))
return props;
drmModeFreeProperty(props);
}
return NULL;
}
static void
drm_set_dpms(struct weston_output *output_base, enum dpms_enum level)
{
struct drm_output *output = (struct drm_output *) output_base;
struct weston_compositor *ec = output_base->compositor;
struct drm_compositor *c = (struct drm_compositor *) ec;
if (!output->dpms_prop)
return;
drmModeConnectorSetProperty(c->drm.fd, output->connector_id,
output->dpms_prop->prop_id, level);
}
static const char *connector_type_names[] = {
"None",
"VGA",
"DVI",
"DVI",
"DVI",
"Composite",
"TV",
"LVDS",
"CTV",
"DIN",
"DP",
"HDMI",
"HDMI",
"TV",
"eDP",
};
static int
find_crtc_for_connector(struct drm_compositor *ec,
drmModeRes *resources, drmModeConnector *connector)
{
drmModeEncoder *encoder;
uint32_t possible_crtcs;
int i, j;
for (j = 0; j < connector->count_encoders; j++) {
encoder = drmModeGetEncoder(ec->drm.fd, connector->encoders[j]);
if (encoder == NULL) {
weston_log("Failed to get encoder.\n");
return -1;
}
possible_crtcs = encoder->possible_crtcs;
drmModeFreeEncoder(encoder);
for (i = 0; i < resources->count_crtcs; i++) {
if (possible_crtcs & (1 << i) &&
!(ec->crtc_allocator & (1 << resources->crtcs[i])))
return i;
}
}
return -1;
}
/* Init output state that depends on gl or gbm */
static int
drm_output_init_egl(struct drm_output *output, struct drm_compositor *ec)
{
int i, flags;
output->surface = gbm_surface_create(ec->gbm,
output->base.current->width,
output->base.current->height,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT |
GBM_BO_USE_RENDERING);
if (!output->surface) {
weston_log("failed to create gbm surface\n");
return -1;
}
if (gl_renderer_output_create(&output->base, output->surface) < 0) {
weston_log("failed to create gl renderer output state\n");
gbm_surface_destroy(output->surface);
return -1;
}
flags = GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE;
for (i = 0; i < 2; i++) {
if (output->cursor_bo[i])
continue;
output->cursor_bo[i] =
gbm_bo_create(ec->gbm, 64, 64, GBM_FORMAT_ARGB8888,
flags);
}
if (output->cursor_bo[0] == NULL || output->cursor_bo[1] == NULL) {
weston_log("cursor buffers unavailable, using gl cursors\n");
ec->cursors_are_broken = 1;
}
return 0;
}
static int
drm_output_init_pixman(struct drm_output *output, struct drm_compositor *c)
{
int w = output->base.current->width;
int h = output->base.current->height;
unsigned int i;
/* FIXME error checking */
for (i = 0; i < ARRAY_LENGTH(output->dumb); i++) {
output->dumb[i] = drm_fb_create_dumb(c, w, h);
if (!output->dumb[i])
goto err;
output->image[i] =
pixman_image_create_bits(PIXMAN_x8r8g8b8, w, h,
output->dumb[i]->map,
output->dumb[i]->stride);
if (!output->image[i])
goto err;
}
if (pixman_renderer_output_create(&output->base) < 0)
goto err;
pixman_region32_init_rect(&output->previous_damage,
output->base.x, output->base.y, output->base.width, output->base.height);
return 0;
err:
for (i = 0; i < ARRAY_LENGTH(output->dumb); i++) {
if (output->dumb[i])
drm_fb_destroy_dumb(output->dumb[i]);
if (output->image[i])
pixman_image_unref(output->image[i]);
output->dumb[i] = NULL;
output->image[i] = NULL;
}
return -1;
}
static void
drm_output_fini_pixman(struct drm_output *output)
{
unsigned int i;
pixman_renderer_output_destroy(&output->base);
pixman_region32_fini(&output->previous_damage);
for (i = 0; i < ARRAY_LENGTH(output->dumb); i++) {
drm_fb_destroy_dumb(output->dumb[i]);
pixman_image_unref(output->image[i]);
output->dumb[i] = NULL;
output->image[i] = NULL;
}
}
static void
edid_parse_string(const uint8_t *data, char text[])
{
int i;
int replaced = 0;
/* this is always 12 bytes, but we can't guarantee it's null
* terminated or not junk. */
strncpy(text, (const char *) data, 12);
/* remove insane chars */
for (i = 0; text[i] != '\0'; i++) {
if (text[i] == '\n' ||
text[i] == '\r') {
text[i] = '\0';
break;
}
}
/* ensure string is printable */
for (i = 0; text[i] != '\0'; i++) {
if (!isprint(text[i])) {
text[i] = '-';
replaced++;
}
}
/* if the string is random junk, ignore the string */
if (replaced > 4)
text[0] = '\0';
}
#define EDID_DESCRIPTOR_ALPHANUMERIC_DATA_STRING 0xfe
#define EDID_DESCRIPTOR_DISPLAY_PRODUCT_NAME 0xfc
#define EDID_DESCRIPTOR_DISPLAY_PRODUCT_SERIAL_NUMBER 0xff
#define EDID_OFFSET_DATA_BLOCKS 0x36
#define EDID_OFFSET_LAST_BLOCK 0x6c
#define EDID_OFFSET_PNPID 0x08
#define EDID_OFFSET_SERIAL 0x0c
static int
edid_parse(struct drm_edid *edid, const uint8_t *data, size_t length)
{
int i;
uint32_t serial_number;
/* check header */
if (length < 128)
return -1;
if (data[0] != 0x00 || data[1] != 0xff)
return -1;
/* decode the PNP ID from three 5 bit words packed into 2 bytes
* /--08--\/--09--\
* 7654321076543210
* |\---/\---/\---/
* R C1 C2 C3 */
edid->pnp_id[0] = 'A' + ((data[EDID_OFFSET_PNPID + 0] & 0x7c) / 4) - 1;
edid->pnp_id[1] = 'A' + ((data[EDID_OFFSET_PNPID + 0] & 0x3) * 8) + ((data[EDID_OFFSET_PNPID + 1] & 0xe0) / 32) - 1;
edid->pnp_id[2] = 'A' + (data[EDID_OFFSET_PNPID + 1] & 0x1f) - 1;
edid->pnp_id[3] = '\0';
/* maybe there isn't a ASCII serial number descriptor, so use this instead */
serial_number = (uint32_t) data[EDID_OFFSET_SERIAL + 0];
serial_number += (uint32_t) data[EDID_OFFSET_SERIAL + 1] * 0x100;
serial_number += (uint32_t) data[EDID_OFFSET_SERIAL + 2] * 0x10000;
serial_number += (uint32_t) data[EDID_OFFSET_SERIAL + 3] * 0x1000000;
if (serial_number > 0)
sprintf(edid->serial_number, "%lu", (unsigned long) serial_number);
/* parse EDID data */
for (i = EDID_OFFSET_DATA_BLOCKS;
i <= EDID_OFFSET_LAST_BLOCK;
i += 18) {
/* ignore pixel clock data */
if (data[i] != 0)
continue;
if (data[i+2] != 0)
continue;
/* any useful blocks? */
if (data[i+3] == EDID_DESCRIPTOR_DISPLAY_PRODUCT_NAME) {
edid_parse_string(&data[i+5],
edid->monitor_name);
} else if (data[i+3] == EDID_DESCRIPTOR_DISPLAY_PRODUCT_SERIAL_NUMBER) {
edid_parse_string(&data[i+5],
edid->serial_number);
} else if (data[i+3] == EDID_DESCRIPTOR_ALPHANUMERIC_DATA_STRING) {
edid_parse_string(&data[i+5],
edid->eisa_id);
}
}
return 0;
}
static void
find_and_parse_output_edid(struct drm_compositor *ec,
struct drm_output *output,
drmModeConnector *connector)
{
drmModePropertyBlobPtr edid_blob = NULL;
drmModePropertyPtr property;
int i;
int rc;
for (i = 0; i < connector->count_props && !edid_blob; i++) {
property = drmModeGetProperty(ec->drm.fd, connector->props[i]);
if (!property)
continue;
if ((property->flags & DRM_MODE_PROP_BLOB) &&
!strcmp(property->name, "EDID")) {
edid_blob = drmModeGetPropertyBlob(ec->drm.fd,
connector->prop_values[i]);
}
drmModeFreeProperty(property);
}
if (!edid_blob)
return;
rc = edid_parse(&output->edid,
edid_blob->data,
edid_blob->length);
if (!rc) {
weston_log("EDID data '%s', '%s', '%s'\n",
output->edid.pnp_id,
output->edid.monitor_name,
output->edid.serial_number);
if (output->edid.pnp_id[0] != '\0')
output->base.make = output->edid.pnp_id;
if (output->edid.monitor_name[0] != '\0')
output->base.model = output->edid.monitor_name;
if (output->edid.serial_number[0] != '\0')
output->base.serial_number = output->edid.serial_number;
}
drmModeFreePropertyBlob(edid_blob);
}
static int
parse_modeline(const char *s, drmModeModeInfo *mode)
{
char hsync[16];
char vsync[16];
float fclock;
mode->type = DRM_MODE_TYPE_USERDEF;
mode->hskew = 0;
mode->vscan = 0;
mode->vrefresh = 0;
mode->flags = 0;
if (sscanf(s, "%f %hd %hd %hd %hd %hd %hd %hd %hd %s %s",
&fclock,
&mode->hdisplay,
&mode->hsync_start,
&mode->hsync_end,
&mode->htotal,
&mode->vdisplay,
&mode->vsync_start,
&mode->vsync_end,
&mode->vtotal, hsync, vsync) != 11)
return -1;
mode->clock = fclock * 1000;
if (strcmp(hsync, "+hsync") == 0)
mode->flags |= DRM_MODE_FLAG_PHSYNC;
else if (strcmp(hsync, "-hsync") == 0)
mode->flags |= DRM_MODE_FLAG_NHSYNC;
else
return -1;
if (strcmp(vsync, "+vsync") == 0)
mode->flags |= DRM_MODE_FLAG_PVSYNC;
else if (strcmp(vsync, "-vsync") == 0)
mode->flags |= DRM_MODE_FLAG_NVSYNC;
else
return -1;
return 0;
}
static uint32_t
parse_transform(const char *transform, const char *output_name)
{
static const struct { const char *name; uint32_t token; } names[] = {
{ "normal", WL_OUTPUT_TRANSFORM_NORMAL },
{ "90", WL_OUTPUT_TRANSFORM_90 },
{ "180", WL_OUTPUT_TRANSFORM_180 },
{ "270", WL_OUTPUT_TRANSFORM_270 },
{ "flipped", WL_OUTPUT_TRANSFORM_FLIPPED },
{ "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
{ "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
{ "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
};
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(names); i++)
if (strcmp(names[i].name, transform) == 0)
return names[i].token;
weston_log("Invalid transform \"%s\" for output %s\n",
transform, output_name);
return WL_OUTPUT_TRANSFORM_NORMAL;
}
static int
create_output_for_connector(struct drm_compositor *ec,
drmModeRes *resources,
drmModeConnector *connector,
int x, int y, struct udev_device *drm_device)
{
struct drm_output *output;
struct drm_mode *drm_mode, *next, *preferred, *current, *configured;
struct weston_mode *m;
struct weston_config_section *section;
drmModeEncoder *encoder;
drmModeModeInfo crtc_mode, modeline;
drmModeCrtc *crtc;
int i, width, height, scale;
char name[32], *s;
const char *type_name;
enum output_config config;
uint32_t transform;
i = find_crtc_for_connector(ec, resources, connector);
if (i < 0) {
weston_log("No usable crtc/encoder pair for connector.\n");
return -1;
}
output = malloc(sizeof *output);
if (output == NULL)
return -1;
memset(output, 0, sizeof *output);
output->base.subpixel = drm_subpixel_to_wayland(connector->subpixel);
output->base.make = "unknown";
output->base.model = "unknown";
output->base.serial_number = "unknown";
wl_list_init(&output->base.mode_list);
if (connector->connector_type < ARRAY_LENGTH(connector_type_names))
type_name = connector_type_names[connector->connector_type];
else
type_name = "UNKNOWN";
snprintf(name, 32, "%s%d", type_name, connector->connector_type_id);
output->base.name = strdup(name);
section = weston_config_get_section(ec->base.config, "output", "name",
output->base.name);
weston_config_section_get_string(section, "mode", &s, "preferred");
if (strcmp(s, "off") == 0)
config = OUTPUT_CONFIG_OFF;
else if (strcmp(s, "preferred") == 0)
config = OUTPUT_CONFIG_PREFERRED;
else if (strcmp(s, "current") == 0)
config = OUTPUT_CONFIG_CURRENT;
else if (sscanf(s, "%dx%d", &width, &height) == 2)
config = OUTPUT_CONFIG_MODE;
else if (parse_modeline(s, &modeline) == 0)
config = OUTPUT_CONFIG_MODELINE;
else {
weston_log("Invalid mode \"%s\" for output %s\n",
s, output->base.name);
config = OUTPUT_CONFIG_PREFERRED;
}
free(s);
weston_config_section_get_int(section, "scale", &scale, 1);
weston_config_section_get_string(section, "transform", &s, "normal");
transform = parse_transform(s, output->base.name);
free(s);
output->crtc_id = resources->crtcs[i];
output->pipe = i;
ec->crtc_allocator |= (1 << output->crtc_id);
output->connector_id = connector->connector_id;
ec->connector_allocator |= (1 << output->connector_id);
output->original_crtc = drmModeGetCrtc(ec->drm.fd, output->crtc_id);
output->dpms_prop = drm_get_prop(ec->drm.fd, connector, "DPMS");
/* Get the current mode on the crtc that's currently driving
* this connector. */
encoder = drmModeGetEncoder(ec->drm.fd, connector->encoder_id);
memset(&crtc_mode, 0, sizeof crtc_mode);
if (encoder != NULL) {
crtc = drmModeGetCrtc(ec->drm.fd, encoder->crtc_id);
drmModeFreeEncoder(encoder);
if (crtc == NULL)
goto err_free;
if (crtc->mode_valid)
crtc_mode = crtc->mode;
drmModeFreeCrtc(crtc);
}
for (i = 0; i < connector->count_modes; i++) {
drm_mode = drm_output_add_mode(output, &connector->modes[i]);
if (!drm_mode)
goto err_free;
}
if (config == OUTPUT_CONFIG_OFF) {
weston_log("Disabling output %s\n", output->base.name);
drmModeSetCrtc(ec->drm.fd, output->crtc_id,
0, 0, 0, 0, 0, NULL);
goto err_free;
}
preferred = NULL;
current = NULL;
configured = NULL;
wl_list_for_each(drm_mode, &output->base.mode_list, base.link) {
if (config == OUTPUT_CONFIG_MODE &&
width == drm_mode->base.width &&
height == drm_mode->base.height)
configured = drm_mode;
if (!memcmp(&crtc_mode, &drm_mode->mode_info, sizeof crtc_mode))
current = drm_mode;
if (drm_mode->base.flags & WL_OUTPUT_MODE_PREFERRED)
preferred = drm_mode;
}
if (config == OUTPUT_CONFIG_MODELINE) {
configured = drm_output_add_mode(output, &modeline);
if (!configured)
goto err_free;
}
if (current == NULL && crtc_mode.clock != 0) {
current = drm_output_add_mode(output, &crtc_mode);
if (!current)
goto err_free;
}
if (config == OUTPUT_CONFIG_CURRENT)
configured = current;
if (option_current_mode && current)
output->base.current = &current->base;
else if (configured)
output->base.current = &configured->base;
else if (preferred)
output->base.current = &preferred->base;
else if (current)
output->base.current = &current->base;
if (output->base.current == NULL) {
weston_log("no available modes for %s\n", output->base.name);
goto err_free;
}
output->base.current->flags |= WL_OUTPUT_MODE_CURRENT;
weston_output_init(&output->base, &ec->base, x, y,
connector->mmWidth, connector->mmHeight,
transform, scale);
if (ec->use_pixman) {
if (drm_output_init_pixman(output, ec) < 0) {
weston_log("Failed to init output pixman state\n");
goto err_output;
}
} else if (drm_output_init_egl(output, ec) < 0) {
weston_log("Failed to init output gl state\n");
goto err_output;
}
output->backlight = backlight_init(drm_device,
connector->connector_type);
if (output->backlight) {
weston_log("Initialized backlight, device %s\n",
output->backlight->path);
output->base.set_backlight = drm_set_backlight;
output->base.backlight_current = drm_get_backlight(output);
} else {
weston_log("Failed to initialize backlight\n");
}
wl_list_insert(ec->base.output_list.prev, &output->base.link);
find_and_parse_output_edid(ec, output, connector);
if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
output->base.connection_internal = 1;
output->base.origin = output->base.current;
output->base.start_repaint_loop = drm_output_start_repaint_loop;
output->base.repaint = drm_output_repaint;
output->base.destroy = drm_output_destroy;
output->base.assign_planes = drm_assign_planes;
output->base.set_dpms = drm_set_dpms;
output->base.switch_mode = drm_output_switch_mode;
output->base.gamma_size = output->original_crtc->gamma_size;
output->base.set_gamma = drm_output_set_gamma;
weston_plane_init(&output->cursor_plane, 0, 0);
weston_plane_init(&output->fb_plane, 0, 0);
weston_compositor_stack_plane(&ec->base, &output->cursor_plane, NULL);
weston_compositor_stack_plane(&ec->base, &output->fb_plane,
&ec->base.primary_plane);
weston_log("Output %s, (connector %d, crtc %d)\n",
output->base.name, output->connector_id, output->crtc_id);
wl_list_for_each(m, &output->base.mode_list, link)
weston_log_continue(" mode %dx%d@%.1f%s%s%s\n",
m->width, m->height, m->refresh / 1000.0,
m->flags & WL_OUTPUT_MODE_PREFERRED ?
", preferred" : "",
m->flags & WL_OUTPUT_MODE_CURRENT ?
", current" : "",
connector->count_modes == 0 ?
", built-in" : "");
return 0;
err_output:
weston_output_destroy(&output->base);
err_free:
wl_list_for_each_safe(drm_mode, next, &output->base.mode_list,
base.link) {
wl_list_remove(&drm_mode->base.link);
free(drm_mode);
}
drmModeFreeCrtc(output->original_crtc);
ec->crtc_allocator &= ~(1 << output->crtc_id);
ec->connector_allocator &= ~(1 << output->connector_id);
free(output);
return -1;
}
static void
create_sprites(struct drm_compositor *ec)
{
struct drm_sprite *sprite;
drmModePlaneRes *plane_res;
drmModePlane *plane;
uint32_t i;
plane_res = drmModeGetPlaneResources(ec->drm.fd);
if (!plane_res) {
weston_log("failed to get plane resources: %s\n",
strerror(errno));
return;
}
for (i = 0; i < plane_res->count_planes; i++) {
plane = drmModeGetPlane(ec->drm.fd, plane_res->planes[i]);
if (!plane)
continue;
sprite = malloc(sizeof(*sprite) + ((sizeof(uint32_t)) *
plane->count_formats));
if (!sprite) {
weston_log("%s: out of memory\n",
__func__);
free(plane);
continue;
}
memset(sprite, 0, sizeof *sprite);
sprite->possible_crtcs = plane->possible_crtcs;
sprite->plane_id = plane->plane_id;
sprite->current = NULL;
sprite->next = NULL;
sprite->compositor = ec;
sprite->count_formats = plane->count_formats;
memcpy(sprite->formats, plane->formats,
plane->count_formats * sizeof(plane->formats[0]));
drmModeFreePlane(plane);
weston_plane_init(&sprite->plane, 0, 0);
weston_compositor_stack_plane(&ec->base, &sprite->plane,
&ec->base.primary_plane);
wl_list_insert(&ec->sprite_list, &sprite->link);
}
free(plane_res->planes);
free(plane_res);
}
static void
destroy_sprites(struct drm_compositor *compositor)
{
struct drm_sprite *sprite, *next;
struct drm_output *output;
output = container_of(compositor->base.output_list.next,
struct drm_output, base.link);
wl_list_for_each_safe(sprite, next, &compositor->sprite_list, link) {
drmModeSetPlane(compositor->drm.fd,
sprite->plane_id,
output->crtc_id, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0);
drm_output_release_fb(output, sprite->current);
drm_output_release_fb(output, sprite->next);
weston_plane_release(&sprite->plane);
free(sprite);
}
}
static int
create_outputs(struct drm_compositor *ec, uint32_t option_connector,
struct udev_device *drm_device)
{
drmModeConnector *connector;
drmModeRes *resources;
int i;
int x = 0, y = 0;
resources = drmModeGetResources(ec->drm.fd);
if (!resources) {
weston_log("drmModeGetResources failed\n");
return -1;
}
ec->crtcs = calloc(resources->count_crtcs, sizeof(uint32_t));
if (!ec->crtcs) {
drmModeFreeResources(resources);
return -1;
}
ec->min_width = resources->min_width;
ec->max_width = resources->max_width;
ec->min_height = resources->min_height;
ec->max_height = resources->max_height;
ec->num_crtcs = resources->count_crtcs;
memcpy(ec->crtcs, resources->crtcs, sizeof(uint32_t) * ec->num_crtcs);
for (i = 0; i < resources->count_connectors; i++) {
connector = drmModeGetConnector(ec->drm.fd,
resources->connectors[i]);
if (connector == NULL)
continue;
if (connector->connection == DRM_MODE_CONNECTED &&
(option_connector == 0 ||
connector->connector_id == option_connector)) {
if (create_output_for_connector(ec, resources,
connector, x, y,
drm_device) < 0) {
drmModeFreeConnector(connector);
continue;
}
x += container_of(ec->base.output_list.prev,
struct weston_output,
link)->width;
}
drmModeFreeConnector(connector);
}
if (wl_list_empty(&ec->base.output_list)) {
weston_log("No currently active connector found.\n");
drmModeFreeResources(resources);
return -1;
}
drmModeFreeResources(resources);
return 0;
}
static void
update_outputs(struct drm_compositor *ec, struct udev_device *drm_device)
{
drmModeConnector *connector;
drmModeRes *resources;
struct drm_output *output, *next;
int x = 0, y = 0;
int x_offset = 0, y_offset = 0;
uint32_t connected = 0, disconnects = 0;
int i;
resources = drmModeGetResources(ec->drm.fd);
if (!resources) {
weston_log("drmModeGetResources failed\n");
return;
}
/* collect new connects */
for (i = 0; i < resources->count_connectors; i++) {
int connector_id = resources->connectors[i];
connector = drmModeGetConnector(ec->drm.fd, connector_id);
if (connector == NULL)
continue;
if (connector->connection != DRM_MODE_CONNECTED) {
drmModeFreeConnector(connector);
continue;
}
connected |= (1 << connector_id);
if (!(ec->connector_allocator & (1 << connector_id))) {
struct weston_output *last =
container_of(ec->base.output_list.prev,
struct weston_output, link);
/* XXX: not yet needed, we die with 0 outputs */
if (!wl_list_empty(&ec->base.output_list))
x = last->x + last->width;
else
x = 0;
y = 0;
create_output_for_connector(ec, resources,
connector, x, y,
drm_device);
weston_log("connector %d connected\n", connector_id);
}
drmModeFreeConnector(connector);
}
drmModeFreeResources(resources);
disconnects = ec->connector_allocator & ~connected;
if (disconnects) {
wl_list_for_each_safe(output, next, &ec->base.output_list,
base.link) {
if (x_offset != 0 || y_offset != 0) {
weston_output_move(&output->base,
output->base.x - x_offset,
output->base.y - y_offset);
}
if (disconnects & (1 << output->connector_id)) {
disconnects &= ~(1 << output->connector_id);
weston_log("connector %d disconnected\n",
output->connector_id);
x_offset += output->base.width;
drm_output_destroy(&output->base);
}
}
}
/* FIXME: handle zero outputs, without terminating */
if (ec->connector_allocator == 0)
wl_display_terminate(ec->base.wl_display);
}
static int
udev_event_is_hotplug(struct drm_compositor *ec, struct udev_device *device)
{
const char *sysnum;
const char *val;
sysnum = udev_device_get_sysnum(device);
if (!sysnum || atoi(sysnum) != ec->drm.id)
return 0;
val = udev_device_get_property_value(device, "HOTPLUG");
if (!val)
return 0;
return strcmp(val, "1") == 0;
}
static int
udev_drm_event(int fd, uint32_t mask, void *data)
{
struct drm_compositor *ec = data;
struct udev_device *event;
event = udev_monitor_receive_device(ec->udev_monitor);
if (udev_event_is_hotplug(ec, event))
update_outputs(ec, event);
udev_device_unref(event);
return 1;
}
static void
drm_restore(struct weston_compositor *ec)
{
struct drm_compositor *d = (struct drm_compositor *) ec;
if (weston_launcher_drm_set_master(&d->base, d->drm.fd, 0) < 0)
weston_log("failed to drop master: %m\n");
tty_reset(d->tty);
}
static void
drm_destroy(struct weston_compositor *ec)
{
struct drm_compositor *d = (struct drm_compositor *) ec;
struct udev_seat *seat, *next;
wl_list_for_each_safe(seat, next, &ec->seat_list, base.link)
udev_seat_destroy(seat);
wl_event_source_remove(d->udev_drm_source);
wl_event_source_remove(d->drm_source);
destroy_sprites(d);
weston_compositor_shutdown(ec);
ec->renderer->destroy(ec);
if (d->gbm)
gbm_device_destroy(d->gbm);
if (weston_launcher_drm_set_master(&d->base, d->drm.fd, 0) < 0)
weston_log("failed to drop master: %m\n");
tty_destroy(d->tty);
free(d);
}
static void
drm_compositor_set_modes(struct drm_compositor *compositor)
{
struct drm_output *output;
struct drm_mode *drm_mode;
int ret;
wl_list_for_each(output, &compositor->base.output_list, base.link) {
if (!output->current) {
/* If something that would cause the output to
* switch mode happened while in another vt, we
* might not have a current drm_fb. In that case,
* schedule a repaint and let drm_output_repaint
* handle setting the mode. */
weston_output_schedule_repaint(&output->base);
continue;
}
drm_mode = (struct drm_mode *) output->base.current;
ret = drmModeSetCrtc(compositor->drm.fd, output->crtc_id,
output->current->fb_id, 0, 0,
&output->connector_id, 1,
&drm_mode->mode_info);
if (ret < 0) {
weston_log(
"failed to set mode %dx%d for output at %d,%d: %m\n",
drm_mode->base.width, drm_mode->base.height,
output->base.x, output->base.y);
}
}
}
static void
vt_func(struct weston_compositor *compositor, int event)
{
struct drm_compositor *ec = (struct drm_compositor *) compositor;
struct udev_seat *seat;
struct drm_sprite *sprite;
struct drm_output *output;
switch (event) {
case TTY_ENTER_VT:
weston_log("entering VT\n");
compositor->focus = 1;
if (weston_launcher_drm_set_master(&ec->base, ec->drm.fd, 1)) {
weston_log("failed to set master: %m\n");
wl_display_terminate(compositor->wl_display);
}
compositor->state = ec->prev_state;
drm_compositor_set_modes(ec);
weston_compositor_damage_all(compositor);
wl_list_for_each(seat, &compositor->seat_list, base.link)
udev_seat_enable(seat, ec->udev);
break;
case TTY_LEAVE_VT:
weston_log("leaving VT\n");
wl_list_for_each(seat, &compositor->seat_list, base.link)
udev_seat_disable(seat);
compositor->focus = 0;
ec->prev_state = compositor->state;
weston_compositor_offscreen(compositor);
/* If we have a repaint scheduled (either from a
* pending pageflip or the idle handler), make sure we
* cancel that so we don't try to pageflip when we're
* vt switched away. The OFFSCREEN state will prevent
* further attemps at repainting. When we switch
* back, we schedule a repaint, which will process
* pending frame callbacks. */
wl_list_for_each(output, &ec->base.output_list, base.link) {
output->base.repaint_needed = 0;
drmModeSetCursor(ec->drm.fd, output->crtc_id, 0, 0, 0);
}
output = container_of(ec->base.output_list.next,
struct drm_output, base.link);
wl_list_for_each(sprite, &ec->sprite_list, link)
drmModeSetPlane(ec->drm.fd,
sprite->plane_id,
output->crtc_id, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0);
if (weston_launcher_drm_set_master(&ec->base, ec->drm.fd, 0) < 0)
weston_log("failed to drop master: %m\n");
break;
};
}
static void
switch_vt_binding(struct weston_seat *seat, uint32_t time, uint32_t key, void *data)
{
struct drm_compositor *ec = data;
tty_activate_vt(ec->tty, key - KEY_F1 + 1);
}
/*
* Find primary GPU
* Some systems may have multiple DRM devices attached to a single seat. This
* function loops over all devices and tries to find a PCI device with the
* boot_vga sysfs attribute set to 1.
* If no such device is found, the first DRM device reported by udev is used.
*/
static struct udev_device*
find_primary_gpu(struct drm_compositor *ec, const char *seat)
{
struct udev_enumerate *e;
struct udev_list_entry *entry;
const char *path, *device_seat, *id;
struct udev_device *device, *drm_device, *pci;
e = udev_enumerate_new(ec->udev);
udev_enumerate_add_match_subsystem(e, "drm");
udev_enumerate_add_match_sysname(e, "card[0-9]*");
udev_enumerate_scan_devices(e);
drm_device = NULL;
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
path = udev_list_entry_get_name(entry);
device = udev_device_new_from_syspath(ec->udev, path);
if (!device)
continue;
device_seat = udev_device_get_property_value(device, "ID_SEAT");
if (!device_seat)
device_seat = default_seat;
if (strcmp(device_seat, seat)) {
udev_device_unref(device);
continue;
}
pci = udev_device_get_parent_with_subsystem_devtype(device,
"pci", NULL);
if (pci) {
id = udev_device_get_sysattr_value(pci, "boot_vga");
if (id && !strcmp(id, "1")) {
if (drm_device)
udev_device_unref(drm_device);
drm_device = device;
break;
}
}
if (!drm_device)
drm_device = device;
else
udev_device_unref(device);
}
udev_enumerate_unref(e);
return drm_device;
}
static void
planes_binding(struct weston_seat *seat, uint32_t time, uint32_t key, void *data)
{
struct drm_compositor *c = data;
switch (key) {
case KEY_C:
c->cursors_are_broken ^= 1;
break;
case KEY_V:
c->sprites_are_broken ^= 1;
break;
case KEY_O:
c->sprites_hidden ^= 1;
break;
default:
break;
}
}
static struct weston_compositor *
drm_compositor_create(struct wl_display *display,
int connector, const char *seat, int tty, int pixman,
int *argc, char *argv[],
struct weston_config *config)
{
struct drm_compositor *ec;
struct udev_device *drm_device;
struct wl_event_loop *loop;
struct udev_seat *udev_seat, *next;
const char *path;
uint32_t key;
weston_log("initializing drm backend\n");
ec = malloc(sizeof *ec);
if (ec == NULL)
return NULL;
memset(ec, 0, sizeof *ec);
/* KMS support for sprites is not complete yet, so disable the
* functionality for now. */
ec->sprites_are_broken = 1;
ec->use_pixman = pixman;
if (weston_compositor_init(&ec->base, display, argc, argv,
config) < 0) {
weston_log("%s failed\n", __func__);
goto err_base;
}
/* Check if we run drm-backend using weston-launch */
if (ec->base.launcher_sock == -1 && geteuid() != 0) {
weston_log("fatal: drm backend should be run "
"using weston-launch binary or as root\n");
goto err_compositor;
}
ec->udev = udev_new();
if (ec->udev == NULL) {
weston_log("failed to initialize udev context\n");
goto err_compositor;
}
ec->base.wl_display = display;
ec->tty = tty_create(&ec->base, vt_func, tty);
if (!ec->tty) {
weston_log("failed to initialize tty\n");
goto err_udev;
}
drm_device = find_primary_gpu(ec, seat);
if (drm_device == NULL) {
weston_log("no drm device found\n");
goto err_tty;
}
path = udev_device_get_syspath(drm_device);
if (init_drm(ec, drm_device) < 0) {
weston_log("failed to initialize kms\n");
goto err_udev_dev;
}
if (ec->use_pixman) {
if (init_pixman(ec) < 0) {
weston_log("failed to initialize pixman renderer\n");
goto err_udev_dev;
}
} else {
if (init_egl(ec) < 0) {
weston_log("failed to initialize egl\n");
goto err_udev_dev;
}
}
ec->base.destroy = drm_destroy;
ec->base.restore = drm_restore;
ec->base.focus = 1;
ec->prev_state = WESTON_COMPOSITOR_ACTIVE;
for (key = KEY_F1; key < KEY_F9; key++)
weston_compositor_add_key_binding(&ec->base, key,
MODIFIER_CTRL | MODIFIER_ALT,
switch_vt_binding, ec);
wl_list_init(&ec->sprite_list);
create_sprites(ec);
if (create_outputs(ec, connector, drm_device) < 0) {
weston_log("failed to create output for %s\n", path);
goto err_sprite;
}
path = NULL;
if (udev_seat_create(&ec->base, ec->udev, seat) == NULL) {
weston_log("failed to create input devices\n");
goto err_sprite;
}
loop = wl_display_get_event_loop(ec->base.wl_display);
ec->drm_source =
wl_event_loop_add_fd(loop, ec->drm.fd,
WL_EVENT_READABLE, on_drm_input, ec);
ec->udev_monitor = udev_monitor_new_from_netlink(ec->udev, "udev");
if (ec->udev_monitor == NULL) {
weston_log("failed to intialize udev monitor\n");
goto err_drm_source;
}
udev_monitor_filter_add_match_subsystem_devtype(ec->udev_monitor,
"drm", NULL);
ec->udev_drm_source =
wl_event_loop_add_fd(loop,
udev_monitor_get_fd(ec->udev_monitor),
WL_EVENT_READABLE, udev_drm_event, ec);
if (udev_monitor_enable_receiving(ec->udev_monitor) < 0) {
weston_log("failed to enable udev-monitor receiving\n");
goto err_udev_monitor;
}
udev_device_unref(drm_device);
weston_compositor_add_debug_binding(&ec->base, KEY_O,
planes_binding, ec);
weston_compositor_add_debug_binding(&ec->base, KEY_C,
planes_binding, ec);
weston_compositor_add_debug_binding(&ec->base, KEY_V,
planes_binding, ec);
return &ec->base;
err_udev_monitor:
wl_event_source_remove(ec->udev_drm_source);
udev_monitor_unref(ec->udev_monitor);
err_drm_source:
wl_event_source_remove(ec->drm_source);
wl_list_for_each_safe(udev_seat, next, &ec->base.seat_list, base.link)
udev_seat_destroy(udev_seat);
err_sprite:
ec->base.renderer->destroy(&ec->base);
gbm_device_destroy(ec->gbm);
destroy_sprites(ec);
err_udev_dev:
udev_device_unref(drm_device);
err_tty:
if (weston_launcher_drm_set_master(&ec->base, ec->drm.fd, 0) < 0)
weston_log("failed to drop master: %m\n");
tty_destroy(ec->tty);
err_udev:
udev_unref(ec->udev);
err_compositor:
weston_compositor_shutdown(&ec->base);
err_base:
free(ec);
return NULL;
}
WL_EXPORT struct weston_compositor *
backend_init(struct wl_display *display, int *argc, char *argv[],
struct weston_config *config)
{
int connector = 0, tty = 0, use_pixman = 0;
const char *seat = default_seat;
const struct weston_option drm_options[] = {
{ WESTON_OPTION_INTEGER, "connector", 0, &connector },
{ WESTON_OPTION_STRING, "seat", 0, &seat },
{ WESTON_OPTION_INTEGER, "tty", 0, &tty },
{ WESTON_OPTION_BOOLEAN, "current-mode", 0, &option_current_mode },
{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
};
parse_options(drm_options, ARRAY_LENGTH(drm_options), argc, argv);
return drm_compositor_create(display, connector, seat, tty, use_pixman,
argc, argv, config);
}