This patch adds support for atomic page flip. User can specify -W option
with the plane id for testing atomic page flipping.

Signed-off-by: Hyungwon Hwang <human.hwang at samsung.com>
---
 tests/modetest/modetest.c | 150 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 147 insertions(+), 3 deletions(-)

diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index bf9222d..d1b7dc4 100644
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -719,6 +719,10 @@ struct pipe_arg {
        struct timeval start;

        int swap_count;
+
+       /* for atomic modeset */
+       uint32_t plane_id;
+       uint32_t fb_obj_id;
 };

 struct plane_arg {
@@ -1446,6 +1450,7 @@ static void usage(char *name)
        fprintf(stderr, "\n Atomic Test options: [A]\n\n");
        fprintf(stderr, "\t-a\tuse atomic modeset\n");
        fprintf(stderr, "\t-W <obj_id>:<prop_name>:<value>\tset property\n");
+       fprintf(stderr, "\t-V <flipping_plane_id>\ttest vsynced page 
flipping\n");

        fprintf(stderr, "\n Legacy test options: [L]\n\n");
        fprintf(stderr, "\t-P 
<crtc_id>:<w>x<h>[+<x>+<y>][*<scale>][@<format>]\tset a plane\n");
@@ -1637,7 +1642,137 @@ static void atomic_modeset(struct device *dev, 
drmModeAtomicReqPtr req,
        drmModeAtomicCommit(dev->fd, req, flags, NULL);
 }

-static char optstr[] = "acdD:efM:P:ps:Cvw:W:";
+static void
+atomic_page_flip_handler(int fd, unsigned int frame,
+               unsigned int sec, unsigned int usec, void *data)
+{
+       static drmModeAtomicReqPtr req = NULL;
+       unsigned int new_fb_id;
+       struct timeval end;
+       struct pipe_arg *pipe;
+       double t;
+       uint32_t flags = 0;
+
+       pipe = (struct pipe_arg *)(unsigned long)data;
+
+       if (pipe->current_fb_id == pipe->fb_id[0])
+               new_fb_id = pipe->fb_id[1];
+       else
+               new_fb_id = pipe->fb_id[0];
+
+       pipe->current_fb_id = new_fb_id;
+       pipe->swap_count++;
+
+       req = drmModeAtomicAlloc();
+
+       drmModeAtomicAddProperty(req, pipe->plane_id, pipe->fb_obj_id, 
new_fb_id);
+
+       flags = DRM_MODE_PAGE_FLIP_EVENT;
+       drmModeAtomicCommit(fd, req, flags, pipe);
+
+       if (pipe->swap_count == 60) {
+               gettimeofday(&end, NULL);
+               t = end.tv_sec + end.tv_usec * 1e-6 -
+                       (pipe->start.tv_sec + pipe->start.tv_usec * 1e-6);
+               fprintf(stderr, "freq: %.02fHz\n", pipe->swap_count / t);
+               pipe->swap_count = 0;
+               pipe->start = end;
+       }
+
+       drmModeAtomicFree(req);
+}
+
+static int atomic_test_page_flip(struct device *dev, drmModeAtomicReqPtr req,
+               struct resources *res, unsigned int plane_id)
+{
+       struct bo *other_bo;
+       unsigned int other_fb_id;
+       struct pipe_arg *pipe = NULL;
+       drmEventContext evctx;
+       uint32_t flags = 0, fb_obj_id = 0, pixel_format;
+       uint64_t width, height;
+       int ret;
+
+       if (!is_atomic_obj_in_request(req, plane_id))
+               return -1;
+
+       fb_obj_id = get_atomic_plane_prop_id(res, plane_id, "FB_ID");
+       if (!fb_obj_id)
+               return -1;
+
+       width = get_atomic_plane_prop_value_in_request(req, res,
+                       plane_id, "SRC_W");
+       height = get_atomic_plane_prop_value_in_request(req, res,
+                       plane_id, "SRC_H");
+       pixel_format = DRM_FORMAT_XRGB8888;
+
+       ret = allocate_fb(dev, req, res, width, height, pixel_format,
+                       PATTERN_TILES, &other_bo, &other_fb_id);
+       if (ret < 0)
+               return ret;
+
+       ret = drmModeAtomicAddProperty(req, plane_id, fb_obj_id,
+                       other_fb_id);
+       if (ret < 0)
+               goto err;
+
+       if (!fb_obj_id) {
+               fprintf(stderr, "page flipping requires at least one plane 
setting.\n");
+               return -1;
+       }
+
+       pipe = drmMalloc(sizeof *pipe);
+
+       gettimeofday(&pipe->start, NULL);
+       pipe->swap_count = 0;
+       pipe->plane_id = plane_id;
+       pipe->fb_obj_id = fb_obj_id;
+       pipe->fb_id[0] = dev->mode.fb_id;
+       pipe->fb_id[1] = other_fb_id;
+       pipe->current_fb_id = other_fb_id;
+
+       flags = DRM_MODE_PAGE_FLIP_EVENT;
+
+       ret = drmModeAtomicCommit(dev->fd, req, flags, pipe);
+       if (ret < 0)
+               goto err_rmfb;
+
+       memset(&evctx, 0, sizeof evctx);
+       evctx.version = DRM_EVENT_CONTEXT_VERSION;
+       evctx.vblank_handler = NULL;
+       evctx.page_flip_handler = atomic_page_flip_handler;
+
+       while (1) {
+               struct timeval timeout = { .tv_sec = 3, .tv_usec = 0 };
+               fd_set fds;
+               int ret;
+
+               FD_ZERO(&fds);
+               FD_SET(0, &fds);
+               FD_SET(dev->fd, &fds);
+               ret = select(dev->fd + 1, &fds, NULL, NULL, &timeout);
+
+               if (ret <= 0) {
+                       fprintf(stderr, "select timed out or error (ret %d)\n",
+                                       ret);
+                       continue;
+               } else if (FD_ISSET(0, &fds)) {
+                       break;
+               }
+
+               drmHandleEvent(dev->fd, &evctx);
+       }
+
+err_rmfb:
+       drmFree(pipe);
+       drmModeRmFB(dev->fd, other_fb_id);
+err:
+       bo_destroy(other_bo);
+
+       return 0;
+}
+
+static char optstr[] = "acdD:efM:P:ps:CvV:w:W:";

 int main(int argc, char **argv)
 {
@@ -1651,7 +1786,7 @@ int main(int argc, char **argv)
        const char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", 
"omapdrm", "exynos", "tilcdc", "msm", "sti", "tegra", "imx-drm", "rockchip", 
"atmel-hlcdc" };
        char *device = NULL;
        char *module = NULL;
-       unsigned int i;
+       unsigned int i, flip_plane_id = 0;
        int count = 0, plane_count = 0;
        unsigned int prop_count = 0;
        struct pipe_arg *pipe_args = NULL;
@@ -1732,6 +1867,11 @@ int main(int argc, char **argv)
                case 'v':
                        test_vsync = 1;
                        break;
+               case 'V':
+                       if (sscanf(optarg, "%u", &flip_plane_id) != 1)
+                               usage(argv[0]);
+                       test_vsync = 1;
+                       break;
                case 'w':
                        prop_args = realloc(prop_args,
                                           (prop_count + 1) * sizeof 
*prop_args);
@@ -1788,7 +1928,7 @@ int main(int argc, char **argv)
                return -1;
        }

-       if (test_vsync && !count) {
+       if (test_vsync && (!count && !req)) {
                fprintf(stderr, "page flipping requires at least one -s 
option.\n");
                return -1;
        }
@@ -1818,6 +1958,10 @@ int main(int argc, char **argv)
        if (req) {
                atomic_modeset(&dev, req, dev.resources);

+               if (test_vsync)
+                       atomic_test_page_flip(&dev, req, dev.resources,
+                                                               flip_plane_id);
+
                getchar();
        } else {
                for (i = 0; i < prop_count; ++i)
-- 
2.4.3

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