This patch adds support for atomic modeset. Using -a option, user can
make modeset to use DRM_IOCTL_MODE_ATOMIC instead of legacy IOCTLs.
Also, by using -W option, user can set the value of each object's property.

Signed-off-by: Hyungwon Hwang <human.hwang at samsung.com>
---
 tests/modetest/modetest.c | 237 +++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 204 insertions(+), 33 deletions(-)

diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index 43bd06f..bf9222d 100644
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -1433,15 +1433,21 @@ static int parse_property(struct property_arg *p, const 
char *arg)

 static void usage(char *name)
 {
-       fprintf(stderr, "usage: %s [-cDdefMPpsCvw]\n", name);
+       fprintf(stderr, "usage: %s [-acDdefMPpsCvwW]\n", name);
+       fprintf(stderr, "\tA: supported in atomic modeset\n");
+       fprintf(stderr, "\tL: supported in legacy modeset\n");

-       fprintf(stderr, "\n Query options:\n\n");
+       fprintf(stderr, "\n Query options: [AL]\n\n");
        fprintf(stderr, "\t-c\tlist connectors\n");
        fprintf(stderr, "\t-e\tlist encoders\n");
        fprintf(stderr, "\t-f\tlist framebuffers\n");
        fprintf(stderr, "\t-p\tlist CRTCs and planes (pipes)\n");

-       fprintf(stderr, "\n Test options:\n\n");
+       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, "\n Legacy test options: [L]\n\n");
        fprintf(stderr, "\t-P 
<crtc_id>:<w>x<h>[+<x>+<y>][*<scale>][@<format>]\tset a plane\n");
        fprintf(stderr, "\t-s 
<connector_id>[,<connector_id>][@<crtc_id>]:<mode>[-<vrefresh>][@<format>]\tset 
a mode\n");
        fprintf(stderr, "\t-C\ttest hw cursor\n");
@@ -1449,9 +1455,9 @@ static void usage(char *name)
        fprintf(stderr, "\t-w <obj_id>:<prop_name>:<value>\tset property\n");

        fprintf(stderr, "\n Generic options:\n\n");
-       fprintf(stderr, "\t-d\tdrop master after mode set\n");
-       fprintf(stderr, "\t-M module\tuse the given driver\n");
-       fprintf(stderr, "\t-D device\tuse the given device\n");
+       fprintf(stderr, "\t-d\tdrop master after mode set [L]\n");
+       fprintf(stderr, "\t-M module\tuse the given driver [AL]\n");
+       fprintf(stderr, "\t-D device\tuse the given device [AL]\n");

        fprintf(stderr, "\n\tDefault is to dump all info.\n");
        exit(0);
@@ -1484,7 +1490,154 @@ static int cursor_supported(void)
        return 1;
 }

-static char optstr[] = "cdD:efM:P:ps:Cvw:";
+static int parse_atomic_args(drmModeAtomicReqPtr req, const char *p)
+{
+       uint32_t object_id, property_id;
+       uint64_t value;
+
+       if (sscanf(p, "%u:%u:%llu", &object_id, &property_id, &value) != 3)
+               return -1;
+
+       drmModeAtomicAddProperty(req, object_id, property_id, value);
+
+       return 0;
+}
+
+static uint32_t get_atomic_plane_prop_id(struct resources *res, uint32_t 
obj_id,
+                                                               const char 
*name)
+{
+       drmModePropertyRes *props_info;
+       struct plane *plane;
+       unsigned int i, j;
+
+       for (i = 0; i < res->plane_res->count_planes; i++) {
+               plane = &res->planes[i];
+               if (plane->plane->plane_id != obj_id)
+                       continue;
+
+               for (j = 0; j < plane->props->count_props; j++) {
+                       props_info = plane->props_info[j];
+                       if (!strcmp(props_info->name, name))
+                               return props_info->prop_id;
+               }
+       }
+
+       return 0;
+}
+
+static uint64_t get_atomic_plane_prop_value_in_request(drmModeAtomicReqPtr req,
+                       struct resources *res, uint32_t obj_id, const char 
*name)
+{
+       uint32_t prop_id, i;
+       drmModeAtomicReqItemPtr item;
+
+       prop_id = get_atomic_plane_prop_id(res, obj_id, name);
+
+       for (i = 0; i < req->cursor; i++) {
+               item = &req->items[i];
+
+               if (item->object_id != obj_id)
+                       continue;
+
+               if (item->property_id != prop_id)
+                       continue;
+
+               return item->value;
+       }
+
+       return -1;
+}
+
+static bool is_atomic_obj_in_request(drmModeAtomicReqPtr req,
+                                               uint32_t obj_id)
+{
+       unsigned int i;
+
+       for (i = 0; i < req->cursor; i++)
+               if (req->items[i].object_id == obj_id)
+                       return true;
+
+       return false;
+}
+
+static int allocate_fb(struct device *dev, drmModeAtomicReqPtr req, struct 
resources *res,
+                       uint32_t width, uint32_t height, uint32_t pixel_format,
+                       int pattern, struct bo **bo, uint32_t *fb_id)
+{
+       uint32_t handles[4] = {0}, pitches[4] = {0}, offsets[4] = {0};
+       int ret;
+
+       *bo = bo_create(dev->fd, pixel_format, width, height,
+                       handles, pitches, offsets, pattern);
+       if (*bo == NULL) {
+               fprintf(stderr, "failed to create bo (%ux%u): %s\n",
+                               width, height, strerror(errno));
+               return -1;
+       }
+
+       ret = drmModeAddFB2(dev->fd, width, height, pixel_format,
+                       handles, pitches, offsets, fb_id, 0);
+       if (ret) {
+               fprintf(stderr, "failed to add fb (%ux%u): %s\n",
+                               width, height, strerror(errno));
+               bo_destroy(*bo);
+               return ret;
+       }
+
+       return 0;
+}
+
+static int allocate_fbs(struct device *dev, drmModeAtomicReqPtr req, struct 
resources *res)
+{
+       uint32_t plane_id, fb_obj_id, fb_id, i, width,  height, pixel_format;
+       struct bo *bo;
+       int ret;
+
+       for (i = 0; i < res->plane_res->count_planes; i++) {
+               plane_id = res->planes[i].plane->plane_id;
+
+               if (!is_atomic_obj_in_request(req, plane_id))
+                       continue;
+
+               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_SMPTE, &bo, &fb_id);
+               if (ret < 0)
+                       return ret;
+
+               dev->mode.bo = bo;
+               dev->mode.fb_id = fb_id;
+
+               ret = drmModeAtomicAddProperty(req, plane_id, fb_obj_id, fb_id);
+               if (ret < 0)
+                       return ret;
+       }
+
+       return 0;
+}
+
+static void atomic_modeset(struct device *dev, drmModeAtomicReqPtr req,
+               struct resources *res)
+{
+       uint32_t flags = 0;
+
+       drmModeAtomicCleanup(req);
+
+       allocate_fbs(dev, req, res);
+
+       drmModeAtomicCommit(dev->fd, req, flags, NULL);
+}
+
+static char optstr[] = "acdD:efM:P:ps:Cvw:W:";

 int main(int argc, char **argv)
 {
@@ -1504,6 +1657,7 @@ int main(int argc, char **argv)
        struct pipe_arg *pipe_args = NULL;
        struct plane_arg *plane_args = NULL;
        struct property_arg *prop_args = NULL;
+       drmModeAtomicReqPtr req = NULL;
        unsigned int args = 0;
        int ret;

@@ -1514,6 +1668,11 @@ int main(int argc, char **argv)
                args++;

                switch (c) {
+               case 'a':
+                       if (!req)
+                               req = drmModeAtomicAlloc();
+                       args--;
+                       break;
                case 'c':
                        connectors = 1;
                        break;
@@ -1587,6 +1746,10 @@ int main(int argc, char **argv)

                        prop_count++;
                        break;
+               case 'W':
+                       if (!req || parse_atomic_args(req, optarg) < 0)
+                               usage(argv[0]);
+                       break;
                default:
                        usage(argv[0]);
                        break;
@@ -1635,6 +1798,9 @@ int main(int argc, char **argv)
                return -1;
        }

+       if (req)
+               drmSetClientCap(dev.fd, DRM_CLIENT_CAP_ATOMIC, 1);
+
        dev.resources = get_resources(&dev);
        if (!dev.resources) {
                drmClose(dev.fd);
@@ -1649,46 +1815,51 @@ int main(int argc, char **argv)
        dump_resource(&dev, planes);
        dump_resource(&dev, framebuffers);

-       for (i = 0; i < prop_count; ++i)
-               set_property(&dev, &prop_args[i]);
+       if (req) {
+               atomic_modeset(&dev, req, dev.resources);

-       if (count || plane_count) {
-               uint64_t cap = 0;
+               getchar();
+       } else {
+               for (i = 0; i < prop_count; ++i)
+                       set_property(&dev, &prop_args[i]);

-               ret = drmGetCap(dev.fd, DRM_CAP_DUMB_BUFFER, &cap);
-               if (ret || cap == 0) {
-                       fprintf(stderr, "driver doesn't support the dumb buffer 
API\n");
-                       return 1;
-               }
+               if (count || plane_count) {
+                       uint64_t cap = 0;

-               if (count)
-                       set_mode(&dev, pipe_args, count);
+                       ret = drmGetCap(dev.fd, DRM_CAP_DUMB_BUFFER, &cap);
+                       if (ret || cap == 0) {
+                               fprintf(stderr, "driver doesn't support the 
dumb buffer API\n");
+                               return 1;
+                       }

-               if (plane_count)
-                       set_planes(&dev, plane_args, plane_count);
+                       if (count)
+                               set_mode(&dev, pipe_args, count);

-               if (test_cursor)
-                       set_cursors(&dev, pipe_args, count);
+                       if (plane_count)
+                               set_planes(&dev, plane_args, plane_count);

-               if (test_vsync)
-                       test_page_flip(&dev, pipe_args, count);
+                       if (test_cursor)
+                               set_cursors(&dev, pipe_args, count);

-               if (drop_master)
-                       drmDropMaster(dev.fd);
+                       if (test_vsync)
+                               test_page_flip(&dev, pipe_args, count);

-               getchar();
+                       if (drop_master)
+                               drmDropMaster(dev.fd);

-               if (test_cursor)
-                       clear_cursors(&dev);
+                       getchar();

-               if (plane_count)
-                       clear_planes(&dev, plane_args, plane_count);
+                       if (test_cursor)
+                               clear_cursors(&dev);

-               if (count)
-                       clear_mode(&dev);
+                       if (plane_count)
+                               clear_planes(&dev, plane_args, plane_count);
+               }
        }

+       clear_mode(&dev);
        free_resources(dev.resources);
+       drmFree(req);

        return 0;
 }
-- 
2.4.3

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