From e300a20e6055de858b8869772fd06682b8644e4f Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Date: Fri, 13 Mar 2026 08:15:23 +0200
Subject: utils: Add -C|--card option

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
 utils/kmsblank.cpp | 4 ++++
 utils/kmsprint.cpp | 4 ++++
 utils/kmstest.cpp  | 5 +++++
 3 files changed, 13 insertions(+)

diff --git a/utils/kmsblank.cpp b/utils/kmsblank.cpp
index d9a3460..43bd2a2 100644
--- a/utils/kmsblank.cpp
+++ b/utils/kmsblank.cpp
@@ -13,6 +13,7 @@ static const char* usage_str =
 	"Blank screen(s)\n\n"
 	"Options:\n"
 	"      --device=DEVICE       DEVICE is the path to DRM card to open\n"
+	"  -C, --card=NUM            open /dev/dri/card<NUM>\n"
 	"  -c, --connector=CONN      CONN is <connector>\n"
 	"  -t, --time=TIME           blank/unblank in TIME intervals\n"
 	"\n"
@@ -35,6 +36,9 @@ int main(int argc, char** argv)
 		Option("|device=", [&dev_path](string s) {
 			dev_path = s;
 		}),
+		Option("C|card=", [&dev_path](string s) {
+			dev_path = "/dev/dri/card" + s;
+		}),
 		Option("c|connector=", [&conn_strs](string str) {
 			conn_strs.push_back(str);
 		}),
diff --git a/utils/kmsprint.cpp b/utils/kmsprint.cpp
index e51de93..d8b4219 100644
--- a/utils/kmsprint.cpp
+++ b/utils/kmsprint.cpp
@@ -464,6 +464,7 @@ static const char* usage_str =
 	"Usage: kmsprint [OPTIONS]\n\n"
 	"Options:\n"
 	"      --device=DEVICE     DEVICE is the path to DRM card to open\n"
+	"  -C, --card=NUM          open /dev/dri/card<NUM>\n"
 	"  -l, --list              Print list instead of tree\n"
 	"  -m, --modes             Print modes\n"
 	"      --xmode             Print modes using X modeline\n"
@@ -482,6 +483,9 @@ int main(int argc, char** argv)
 		Option("|device=", [&dev_path](string s) {
 			dev_path = s;
 		}),
+		Option("C|card=", [&dev_path](string s) {
+			dev_path = "/dev/dri/card" + s;
+		}),
 		Option("l|list", []() {
 			s_opts.print_list = true;
 		}),
diff --git a/utils/kmstest.cpp b/utils/kmstest.cpp
index 36f7409..76b64ca 100644
--- a/utils/kmstest.cpp
+++ b/utils/kmstest.cpp
@@ -400,6 +400,7 @@ static const char* usage_str =
 	"Show a test pattern on a display or plane\n\n"
 	"Options:\n"
 	"      --device=DEVICE       DEVICE is the path to DRM card to open\n"
+	"  -C, --card=NUM            open /dev/dri/card<NUM>\n"
 	"  -c, --connector=CONN      CONN is <connector>\n"
 	"  -r, --crtc=CRTC           CRTC is [<crtc>:]<w>x<h>[@<Hz>]\n"
 	"                            or\n"
@@ -471,6 +472,10 @@ static vector<Arg> parse_cmdline(int argc, char** argv)
 		       [&](string s) {
 			       s_device_path = s;
 		       }),
+		Option("C|card=",
+		       [&](string s) {
+			       s_device_path = "/dev/dri/card" + s;
+		       }),
 		Option("c|connector=",
 		       [&](string s) {
 			       args.push_back(Arg{ ArgType::Connector, s });
-- 
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