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lib: add the ability to set an EDID data block on a connector

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Add a function to set an EDID data block on a connector and include a
set of generic EDID blocks for testing.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
This commit is contained in:
Thomas Wood
2014-05-27 14:47:25 +01:00
parent 37ffb22d3c
commit 13cd79c128
6 changed files with 220 additions and 4 deletions
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lib/igt_kms.c
+46 -4
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@@ -408,6 +408,20 @@ static int get_card_number(int fd)
return minor(buf.st_rdev) & 0x3f;
}
static char* get_debugfs_connector_path(int drm_fd, drmModeConnector *connector,
const char *file)
{
char *path;
asprintf(&path, "/sys/kernel/debug/dri/%d/%s-%d/%s",
get_card_number(drm_fd),
kmstest_connector_type_str(connector->connector_type),
connector->connector_type_id,
file);
return path;
}
/**
* kmstest_force_connector:
* @fd: drm file descriptor
@@ -440,10 +454,7 @@ void kmstest_force_connector(int drm_fd, drmModeConnector *connector, enum
break;
}
asprintf(&path, "/sys/kernel/debug/dri/%d/%s-%d/force",
get_card_number(drm_fd),
kmstest_connector_type_str(connector->connector_type),
connector->connector_type_id);
path = get_debugfs_connector_path(drm_fd, connector, "force");
debugfs_fd = open(path, O_WRONLY | O_TRUNC);
free(path);
@@ -455,6 +466,37 @@ void kmstest_force_connector(int drm_fd, drmModeConnector *connector, enum
igt_assert(ret != -1);
}
/**
* kmstest_force_edid:
* @drm_fd: drm file descriptor
* @connector: connector to set @edid on
* @edid: An EDID data block
* @length: length of the EDID data. #EDID_LENGTH defines the standard EDID
* length
*
* Set the EDID data on @connector to @edid. See #generic_edid and
* #kmstest_generic_edid for a set of generic EDID data blocks.
*/
void kmstest_force_edid(int drm_fd, drmModeConnector *connector,
const unsigned char *edid, size_t length)
{
char *path;
int debugfs_fd, ret;
path = get_debugfs_connector_path(drm_fd, connector, "edid_override");
debugfs_fd = open(path, O_WRONLY | O_TRUNC);
free(path);
igt_assert(debugfs_fd != -1);
ret = write(debugfs_fd, edid, length);
close(debugfs_fd);
igt_assert(ret != -1);
}
void kmstest_free_connector_config(struct kmstest_connector_config *config)
{
drmModeFreeCrtc(config->crtc);