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-rw-r--r--backend/drm/backend.c2
-rw-r--r--backend/drm/drm.c373
-rw-r--r--example/CMakeLists.txt4
-rw-r--r--example/example-drm.c7
-rw-r--r--include/backend/drm/drm.h11
-rw-r--r--include/wlr/backend/drm.h12
6 files changed, 201 insertions, 208 deletions
diff --git a/backend/drm/backend.c b/backend/drm/backend.c
index 5d72d9dc..42e7f5fd 100644
--- a/backend/drm/backend.c
+++ b/backend/drm/backend.c
@@ -90,7 +90,7 @@ error_backend:
static void free_output(void *item)
{
struct wlr_drm_output *out = item;
- wlr_drm_output_free(out, true);
+ wlr_drm_output_cleanup(out, true);
free(out);
}
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index f636c42c..fc2626c5 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -37,29 +37,6 @@ static const char *conn_name[] = {
[DRM_MODE_CONNECTOR_DSI] = "DSI",
};
-static void page_flip_handler(int fd, unsigned seq, unsigned tv_sec, unsigned tv_usec,
- void *user) {
-
- struct wlr_drm_output *out = user;
- struct wlr_drm_backend *backend = wl_container_of(out->renderer, backend, renderer);
-
- out->pageflip_pending = true;
- if (!out->cleanup) {
- wl_signal_emit(&backend->signals.output_render, out);
- }
-}
-
-int wlr_drm_event(int fd, uint32_t mask, void *data) {
- drmEventContext event = {
- .version = DRM_EVENT_CONTEXT_VERSION,
- .page_flip_handler = page_flip_handler,
- };
-
- drmHandleEvent(fd, &event);
-
- return 1;
-}
-
bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd) {
renderer->gbm = gbm_create_device(fd);
@@ -86,81 +63,6 @@ void wlr_drm_renderer_free(struct wlr_drm_renderer *renderer) {
gbm_device_destroy(renderer->gbm);
}
-static int find_id(const void *item, const void *cmp_to) {
- const struct wlr_drm_output *out = item;
- const uint32_t *id = cmp_to;
-
- if (out->connector < *id) {
- return -1;
- } else if (out->connector > *id) {
- return 1;
- } else {
- return 0;
- }
-}
-
-void wlr_drm_scan_connectors(struct wlr_drm_backend *backend) {
- drmModeRes *res = drmModeGetResources(backend->fd);
- if (!res) {
- wlr_log(L_ERROR, "Failed to get DRM resources");
- return;
- }
-
- for (int i = 0; i < res->count_connectors; ++i) {
- uint32_t id = res->connectors[i];
-
- drmModeConnector *conn = drmModeGetConnector(backend->fd, id);
- if (!conn) {
- wlr_log(L_ERROR, "Failed to get DRM connector");
- continue;
- }
-
- struct wlr_drm_output *out;
- int index = list_seq_find(backend->outputs, find_id, &id);
-
- if (index == -1) {
- out = calloc(1, sizeof *out);
- if (!out) {
- wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
- drmModeFreeConnector(conn);
- continue;
- }
-
- out->renderer = &backend->renderer;
- out->state = DRM_OUTPUT_DISCONNECTED;
- out->connector = res->connectors[i];
- snprintf(out->name, sizeof out->name, "%s-%"PRIu32,
- conn_name[conn->connector_type],
- conn->connector_type_id);
-
- list_add(backend->outputs, out);
- wlr_log(L_INFO, "Found display '%s'", out->name);
- } else {
- out = backend->outputs->items[index];
- }
-
- if (out->state == DRM_OUTPUT_DISCONNECTED &&
- conn->connection == DRM_MODE_CONNECTED) {
-
- out->state = DRM_OUTPUT_NEEDS_MODESET;
- wlr_log(L_INFO, "Sending modesetting signal for '%s'", out->name);
- wl_signal_emit(&backend->signals.output_add, out);
-
- } else if (out->state == DRM_OUTPUT_CONNECTED &&
- conn->connection != DRM_MODE_CONNECTED) {
-
- out->state = DRM_OUTPUT_DISCONNECTED;
- wlr_drm_output_free(out, false);
- wlr_log(L_INFO, "Sending destruction signal for '%s'", out->name);
- wl_signal_emit(&backend->signals.output_rem, out);
- }
-
- drmModeFreeConnector(conn);
- }
-
- drmModeFreeResources(res);
-}
-
static void free_fb(struct gbm_bo *bo, void *data) {
uint32_t *id = data;
@@ -192,6 +94,25 @@ static uint32_t get_fb_for_bo(int fd, struct gbm_bo *bo) {
return *id;
}
+void wlr_drm_output_begin(struct wlr_drm_output *out) {
+ struct wlr_drm_renderer *renderer = out->renderer;
+ eglMakeCurrent(renderer->egl.display, out->egl, out->egl, renderer->egl.context);
+}
+
+void wlr_drm_output_end(struct wlr_drm_output *out) {
+ struct wlr_drm_renderer *renderer = out->renderer;
+ eglSwapBuffers(renderer->egl.display, out->egl);
+
+ struct gbm_bo *bo = gbm_surface_lock_front_buffer(out->gbm);
+ uint32_t fb_id = get_fb_for_bo(renderer->fd, bo);
+
+ drmModePageFlip(renderer->fd, out->crtc, fb_id, DRM_MODE_PAGE_FLIP_EVENT, out);
+
+ gbm_surface_release_buffer(out->gbm, bo);
+
+ out->pageflip_pending = false;
+}
+
static bool display_init_renderer(struct wlr_drm_renderer *renderer,
struct wlr_drm_output *out) {
@@ -225,7 +146,7 @@ static bool display_init_renderer(struct wlr_drm_renderer *renderer,
uint32_t fb_id = get_fb_for_bo(renderer->fd, bo);
drmModeSetCrtc(renderer->fd, out->crtc, fb_id, 0, 0,
- &out->connector, 1, out->active_mode);
+ &out->connector, 1, &out->active_mode->mode);
drmModePageFlip(renderer->fd, out->crtc, fb_id, DRM_MODE_PAGE_FLIP_EVENT, out);
gbm_surface_release_buffer(out->gbm, bo);
@@ -233,54 +154,119 @@ static bool display_init_renderer(struct wlr_drm_renderer *renderer,
return true;
}
-static drmModeModeInfo *select_mode(size_t num_modes, drmModeModeInfo modes[static num_modes],
- drmModeCrtc *old_crtc, const char *str) {
+static int find_id(const void *item, const void *cmp_to) {
+ const struct wlr_drm_output *out = item;
+ const uint32_t *id = cmp_to;
+
+ if (out->connector < *id) {
+ return -1;
+ } else if (out->connector > *id) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
- if (strcmp(str, "preferred") == 0) {
- return &modes[0];
+void wlr_drm_scan_connectors(struct wlr_drm_backend *backend) {
+ drmModeRes *res = drmModeGetResources(backend->fd);
+ if (!res) {
+ wlr_log(L_ERROR, "Failed to get DRM resources");
+ return;
}
- if (strcmp(str, "current") == 0) {
- if (!old_crtc) {
- wlr_log(L_ERROR, "Display does not have currently configured mode");
- return NULL;
+ for (int i = 0; i < res->count_connectors; ++i) {
+ uint32_t id = res->connectors[i];
+
+ drmModeConnector *conn = drmModeGetConnector(backend->fd, id);
+ if (!conn) {
+ wlr_log(L_ERROR, "Failed to get DRM connector");
+ continue;
}
- for (size_t i = 0; i < num_modes; ++i) {
- if (memcmp(&modes[i], &old_crtc->mode, sizeof modes[0]) == 0) {
- return &modes[i];
+ struct wlr_drm_output *out;
+ int index = list_seq_find(backend->outputs, find_id, &id);
+
+ if (index == -1) {
+ out = calloc(1, sizeof *out);
+ if (!out) {
+ wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
+ drmModeFreeConnector(conn);
+ continue;
}
+
+ out->renderer = &backend->renderer;
+ out->state = DRM_OUTPUT_DISCONNECTED;
+ out->connector = res->connectors[i];
+ snprintf(out->name, sizeof out->name, "%s-%"PRIu32,
+ conn_name[conn->connector_type],
+ conn->connector_type_id);
+
+ list_add(backend->outputs, out);
+ wlr_log(L_INFO, "Found display '%s'", out->name);
+ } else {
+ out = backend->outputs->items[index];
}
- // We should never get here
- assert(0);
- }
+ if (out->state == DRM_OUTPUT_DISCONNECTED &&
+ conn->connection == DRM_MODE_CONNECTED) {
- unsigned width = 0;
- unsigned height = 0;
- unsigned rate = 0;
- int ret;
+ wlr_log(L_INFO, "'%s' connected", out->name);
- if ((ret = sscanf(str, "%ux%u@%u", &width, &height, &rate)) != 2 && ret != 3) {
- wlr_log(L_ERROR, "Invalid modesetting string '%s'", str);
- return NULL;
- }
+ out->modes = malloc(sizeof(*out->modes) * conn->count_modes);
+ if (!out->modes) {
+ wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
+ goto error;
+ }
+
+ wlr_log(L_INFO, "Detected modes:");
+
+ out->num_modes = conn->count_modes;
+ for (int i = 0; i < conn->count_modes; ++i) {
+ drmModeModeInfo *mode = &conn->modes[i];
+ out->modes[i].width = mode->hdisplay;
+ out->modes[i].height = mode->vdisplay;
+ // TODO: Calculate more accurate refresh rate
+ out->modes[i].rate = mode->vrefresh;
+ out->modes[i].mode = *mode;
+
+ wlr_log(L_INFO, " %"PRIu16"@%"PRIu16"@%"PRIu32,
+ mode->hdisplay, mode->vdisplay,
+ mode->vrefresh);
+ }
- for (size_t i = 0; i < num_modes; ++i) {
- if (modes[i].hdisplay == width && modes[i].vdisplay == height &&
- (!rate || modes[i].vrefresh == rate)) {
+ out->state = DRM_OUTPUT_NEEDS_MODESET;
+ wlr_log(L_INFO, "Sending modesetting signal for '%s'", out->name);
+ wl_signal_emit(&backend->signals.output_add, out);
- return &modes[i];
+ } else if (out->state == DRM_OUTPUT_CONNECTED &&
+ conn->connection != DRM_MODE_CONNECTED) {
+
+ wlr_drm_output_cleanup(out, false);
+ wlr_log(L_INFO, "Sending destruction signal for '%s'", out->name);
+ wl_signal_emit(&backend->signals.output_rem, out);
}
+error:
+ drmModeFreeConnector(conn);
}
- wlr_log(L_ERROR, "Unable to find mode %ux%u@%u", width, height, rate);
- return NULL;
+ drmModeFreeResources(res);
+}
+
+struct wlr_drm_mode *wlr_drm_output_get_modes(struct wlr_drm_output *out, size_t *count) {
+ if (out->state == DRM_OUTPUT_DISCONNECTED) {
+ *count = 0;
+ return NULL;
+ }
+
+ *count = out->num_modes;
+ return out->modes;
}
-bool wlr_drm_output_modeset(struct wlr_drm_output *out, const char *str) {
+bool wlr_drm_output_modeset(struct wlr_drm_output *out, struct wlr_drm_mode *mode) {
struct wlr_drm_backend *backend = wl_container_of(out->renderer, backend, renderer);
- wlr_log(L_INFO, "Modesetting %s with '%s'", out->name, str);
+
+ wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u'", out->name, mode->width,
+ mode->height, mode->rate);
drmModeConnector *conn = drmModeGetConnector(backend->fd, out->connector);
if (!conn) {
@@ -293,34 +279,12 @@ bool wlr_drm_output_modeset(struct wlr_drm_output *out, const char *str) {
goto error;
}
- out->num_modes = conn->count_modes;
- out->modes = malloc(sizeof *out->modes * out->num_modes);
- if (!out->modes) {
- wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
- goto error;
- }
- memcpy(out->modes, conn->modes, sizeof *out->modes * out->num_modes);
-
- wlr_log(L_INFO, "Detected modes:");
- for (size_t i = 0; i < out->num_modes; ++i) {
- wlr_log(L_INFO, " %"PRIu16"@%"PRIu16"@%"PRIu32,
- out->modes[i].hdisplay, out->modes[i].vdisplay,
- out->modes[i].vrefresh);
- }
-
drmModeEncoder *curr_enc = drmModeGetEncoder(backend->fd, conn->encoder_id);
if (curr_enc) {
out->old_crtc = drmModeGetCrtc(backend->fd, curr_enc->crtc_id);
free(curr_enc);
}
- out->active_mode = select_mode(out->num_modes, out->modes,
- out->old_crtc, str);
- if (!out->active_mode) {
- wlr_log(L_ERROR, "Failed to configure %s", out->name);
- goto error;
- }
-
drmModeRes *res = drmModeGetResources(backend->fd);
if (!res) {
wlr_log(L_ERROR, "Failed to get DRM resources");
@@ -358,9 +322,9 @@ bool wlr_drm_output_modeset(struct wlr_drm_output *out, const char *str) {
}
out->state = DRM_OUTPUT_CONNECTED;
-
- out->width = out->active_mode->hdisplay;
- out->height = out->active_mode->vdisplay;
+ out->active_mode = mode;
+ out->width = mode->width;
+ out->height = mode->height;
if (!display_init_renderer(&backend->renderer, out)) {
wlr_log(L_ERROR, "Failed to initalise renderer for %s", out->name);
@@ -369,10 +333,6 @@ bool wlr_drm_output_modeset(struct wlr_drm_output *out, const char *str) {
drmModeFreeConnector(conn);
- wlr_log(L_INFO, "Configuring %s with mode %"PRIu16"x%"PRIu16"@%"PRIu32"",
- out->name, out->active_mode->hdisplay, out->active_mode->vdisplay,
- out->active_mode->vrefresh);
-
return true;
error:
@@ -385,58 +345,79 @@ error:
return false;
}
-void wlr_drm_output_free(struct wlr_drm_output *out, bool restore) {
- if (!out || out->state != DRM_OUTPUT_CONNECTED) {
- return;
+static void page_flip_handler(int fd, unsigned seq, unsigned tv_sec, unsigned tv_usec,
+ void *user) {
+
+ struct wlr_drm_output *out = user;
+ struct wlr_drm_backend *backend = wl_container_of(out->renderer, backend, renderer);
+
+ out->pageflip_pending = true;
+ if (!out->cleanup) {
+ wl_signal_emit(&backend->signals.output_render, out);
}
+}
- struct wlr_drm_renderer *renderer = out->renderer;
+int wlr_drm_event(int fd, uint32_t mask, void *data) {
+ drmEventContext event = {
+ .version = DRM_EVENT_CONTEXT_VERSION,
+ .page_flip_handler = page_flip_handler,
+ };
- eglDestroySurface(renderer->egl.display, out->egl);
- gbm_surface_destroy(out->gbm);
+ drmHandleEvent(fd, &event);
- free(out->modes);
- out->state = DRM_OUTPUT_DISCONNECTED;
+ return 1;
+}
- if (!restore) {
+static void restore_output(struct wlr_drm_output *out, int fd) {
+ drmModeCrtc *crtc = out->old_crtc;
+ if (!crtc) {
return;
}
- drmModeCrtc *crtc = out->old_crtc;
- if (crtc) {
- // Wait for exising page flips to finish
-
- drmEventContext event = {
- .version = DRM_EVENT_CONTEXT_VERSION,
- .page_flip_handler = page_flip_handler,
- };
-
- out->cleanup = true;
- while (out->pageflip_pending)
- drmHandleEvent(renderer->fd, &event);
-
- drmModeSetCrtc(renderer->fd, crtc->crtc_id, crtc->buffer_id,
- crtc->x, crtc->y, &out->connector,
- 1, &crtc->mode);
- drmModeFreeCrtc(crtc);
+ // Wait for exising page flips to finish
+
+ out->cleanup = true;
+ while (out->pageflip_pending) {
+ wlr_drm_event(fd, 0, NULL);
}
-}
-void wlr_drm_output_begin(struct wlr_drm_output *out) {
- struct wlr_drm_renderer *renderer = out->renderer;
- eglMakeCurrent(renderer->egl.display, out->egl, out->egl, renderer->egl.context);
+ drmModeSetCrtc(fd, crtc->crtc_id, crtc->buffer_id, crtc->x, crtc->y,
+ &out->connector, 1, &crtc->mode);
+ drmModeFreeCrtc(crtc);
}
-void wlr_drm_output_end(struct wlr_drm_output *out) {
- struct wlr_drm_renderer *renderer = out->renderer;
- eglSwapBuffers(renderer->egl.display, out->egl);
+void wlr_drm_output_cleanup(struct wlr_drm_output *out, bool restore) {
+ if (!out) {
+ return;
+ }
- struct gbm_bo *bo = gbm_surface_lock_front_buffer(out->gbm);
- uint32_t fb_id = get_fb_for_bo(renderer->fd, bo);
+ struct wlr_drm_renderer *renderer = out->renderer;
- drmModePageFlip(renderer->fd, out->crtc, fb_id, DRM_MODE_PAGE_FLIP_EVENT, out);
+ switch (out->state) {
+ case DRM_OUTPUT_CONNECTED:
+ eglDestroySurface(renderer->egl.display, out->egl);
+ gbm_surface_destroy(out->gbm);
+
+ out->egl = EGL_NO_SURFACE;
+ out->gbm = NULL;
+ /* Fallthrough */
+
+ case DRM_OUTPUT_NEEDS_MODESET:
+ free(out->modes);
+ out->num_modes = 0;
+ out->modes = NULL;
+ out->active_mode = NULL;
+ out->width = 0;
+ out->height = 0;
+
+ if (restore) {
+ restore_output(out, renderer->fd);
+ }
- gbm_surface_release_buffer(out->gbm, bo);
+ out->state = DRM_MODE_DISCONNECTED;
+ break;
- out->pageflip_pending = false;
+ case DRM_OUTPUT_DISCONNECTED:
+ break;
+ }
}
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index fb2f3823..29a77675 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -1,3 +1,7 @@
+include_directories(
+ ${DRM_INCLUDE_DIRS}
+)
+
add_executable(example
main.c
)
diff --git a/example/example-drm.c b/example/example-drm.c
index 35a4f9a2..a2643949 100644
--- a/example/example-drm.c
+++ b/example/example-drm.c
@@ -23,8 +23,10 @@ void output_add(struct wl_listener *listener, void *data)
{
struct wlr_drm_output *out = data;
- fprintf(stderr, "Output added\n");
- wlr_drm_output_modeset(out, "preferred");
+ size_t num_modes;
+ struct wlr_drm_mode *modes = wlr_drm_output_get_modes(out, &num_modes);
+
+ wlr_drm_output_modeset(out, &modes[0]);
}
void output_rem(struct wl_listener *listener, void *data)
@@ -115,4 +117,5 @@ int main()
wl_event_source_remove(timer);
wlr_drm_backend_free(wlr);
+ wl_display_destroy(display);
}
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
index 3373f024..daafc144 100644
--- a/include/backend/drm/drm.h
+++ b/include/backend/drm/drm.h
@@ -25,7 +25,6 @@ bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd);
void wlr_drm_renderer_free(struct wlr_drm_renderer *renderer);
enum wlr_drm_output_state {
- DRM_OUTPUT_INVALID,
DRM_OUTPUT_DISCONNECTED,
DRM_OUTPUT_NEEDS_MODESET,
DRM_OUTPUT_CONNECTED,
@@ -37,8 +36,8 @@ struct wlr_drm_output {
char name[16];
size_t num_modes;
- drmModeModeInfo *modes;
- drmModeModeInfo *active_mode;
+ struct wlr_drm_mode *modes;
+ struct wlr_drm_mode *active_mode;
uint32_t width;
uint32_t height;
@@ -54,11 +53,7 @@ struct wlr_drm_output {
bool cleanup;
};
-bool wlr_drm_output_modeset(struct wlr_drm_output *out, const char *str);
-void wlr_drm_output_free(struct wlr_drm_output *out, bool restore);
-
-void wlr_drm_output_begin(struct wlr_drm_output *out);
-void wlr_drm_output_end(struct wlr_drm_output *out);
+void wlr_drm_output_cleanup(struct wlr_drm_output *out, bool restore);
void wlr_drm_scan_connectors(struct wlr_drm_backend *backend);
int wlr_drm_event(int fd, uint32_t mask, void *data);
diff --git a/include/wlr/backend/drm.h b/include/wlr/backend/drm.h
index d56c7e77..c3df2409 100644
--- a/include/wlr/backend/drm.h
+++ b/include/wlr/backend/drm.h
@@ -3,16 +3,26 @@
#include <wayland-server.h>
#include <wlr/session.h>
+#include <xf86drmMode.h> // drmModeModeInfo
struct wlr_drm_backend;
struct wlr_drm_output;
+struct wlr_drm_mode {
+ uint16_t width;
+ uint16_t height;
+ uint32_t rate;
+ drmModeModeInfo mode;
+};
+
struct wlr_drm_backend *wlr_drm_backend_init(struct wl_display *display,
struct wlr_session *session, struct wl_listener *add, struct wl_listener *rem,
struct wl_listener *render);
void wlr_drm_backend_free(struct wlr_drm_backend *backend);
-bool wlr_drm_output_modeset(struct wlr_drm_output *out, const char *str);
+struct wlr_drm_mode *wlr_drm_output_get_modes(struct wlr_drm_output *out, size_t *count);
+bool wlr_drm_output_modeset(struct wlr_drm_output *out, struct wlr_drm_mode *mode);
+
void wlr_drm_output_begin(struct wlr_drm_output *out);
void wlr_drm_output_end(struct wlr_drm_output *out);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 18:31:34 +0000