[PATCH i-g-t 2/2] lib/igt_kms: add support for choosing big joiner mode
Kunal Joshi
kunal1.joshi at intel.com
Thu Jan 18 10:46:16 UTC 2024
add support to choose big joiner mode with environment
variable, use mode with highest clock if no mode with big joiner
found.
v2: reuse bigjoiner_mode_found (Bhanu)
v3: avoid returning from multiple places (Bhanu)
avoid frequent debugfs reads (Bhanu)
v4: use default mode (Bhanu)
Cc: Swati Sharma <swati2.sharma at intel.com>
Cc: Karthik B S <karthik.b.s at intel.com>
Cc: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
Signed-off-by: Kunal Joshi <kunal1.joshi at intel.com>
---
lib/igt_kms.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 7a07e62f8..77059dd34 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -1771,8 +1771,9 @@ void igt_sort_connector_modes(drmModeConnector *connector,
bool kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
drmModeModeInfo *mode)
{
+ bool found;
char *env;
- int i;
+ int i, max_dotclock;
if (!connector->count_modes) {
igt_warn("no modes for connector %d\n",
@@ -1781,14 +1782,23 @@ bool kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
}
env = getenv("IGT_KMS_RESOLUTION");
+ max_dotclock = igt_get_max_dotclock(drm_fd);
if (env) {
/*
- * Only (0 or 1) and (lowest or highest) are allowed.
+ * Only (0 or 1 or 2) and (lowest or highest or joiner) are allowed.
*
* 0/lowest: Choose connector mode with lowest possible resolution.
* 1/highest: Choose connector mode with highest possible resolution.
+ * 2/joiner: Choose connector mode with bigjoiner support or default
+ * mode if can't support big joiner
*/
- if (!strcmp(env, "highest") || !strcmp(env, "1"))
+ if (!strcmp(env, "joiner") || !strcmp(env, "2")) {
+ found = bigjoiner_mode_found(drm_fd, connector,
+ max_dotclock);
+ if (!found)
+ goto default_mode;
+ }
+ else if (!strcmp(env, "highest") || !strcmp(env, "1"))
igt_sort_connector_modes(connector, sort_drm_modes_by_res_dsc);
else if (!strcmp(env, "lowest") || !strcmp(env, "0"))
igt_sort_connector_modes(connector, sort_drm_modes_by_res_asc);
--
2.25.1
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