From 3be89cb70b41e0fc166317010ca5c35e7a93ee48 Mon Sep 17 00:00:00 2001
From: Hermes <piotr@piksar.eu>
Date: Wed, 30 Sep 2026 12:05:33 +0200
Subject: [PATCH] hilink: expose runtime knob power through MSP VTX

---
 .../0001-wifilink-mspvtx-read-only.patch      | 20 +++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/package/msposd/0001-wifilink-mspvtx-read-only.patch b/package/msposd/0001-wifilink-mspvtx-read-only.patch
index 70229b6..7430969 100644
--- a/package/msposd/0001-wifilink-mspvtx-read-only.patch
+++ b/package/msposd/0001-wifilink-mspvtx-read-only.patch
@@ -353,10 +353,10 @@ index 3e60a31..1fe1c28 100644
 +// Advertise the actual local WFB configuration without resetting the FC table.
 +void msp_send_vtx_runtime_config(int serial_fd);
 diff --git a/osd/util/interface.c b/osd/util/interface.c
-index 089fdc2..1ddd350 100644
+index 089fdc2..a783431 100644
 --- a/osd/util/interface.c
 +++ b/osd/util/interface.c
-@@ -153,3 +153,69 @@ void set_frequency(char *interface, int channel) {
+@@ -153,3 +153,81 @@ void set_frequency(char *interface, int channel) {
  		printf("Failed to set channel on %s\n", interface);
  	}
  }
@@ -400,10 +400,22 @@ index 089fdc2..1ddd350 100644
 +}
 +
 +int read_wfb_txpower(void) {
-+	FILE *fp = fopen("/etc/wfb.yaml", "r");
++	FILE *fp = fopen("/run/wfb-power", "r");
++	int txpower = -1;
++
++	// CH6 knob state wins while WFB is active; it is intentionally kept in
++	// tmpfs so power changes do not wear the overlay flash.
++	if (fp != NULL) {
++		if (fscanf(fp, "%d", &txpower) == 1 && txpower >= 0 && txpower <= 100) {
++			fclose(fp);
++			return txpower;
++		}
++		fclose(fp);
++	}
++
++	fp = fopen("/etc/wfb.yaml", "r");
 +	char buffer[256];
 +	int in_wireless = 0;
-+	int txpower = -1;
 +
 +	if (fp == NULL) {
 +		return -1;