[DONE] 정리 3단계 PR 12 — 패널 드라이버가 원래 라이브러리의 첫 고침을 받아 줄 디코더 값이 늘 정해진다

firmware/patternflow/src/hub75/ESP32-HUB75-MatrixPanel-I2S-DMA.h

@@ -347,7 +347,7 @@ struct HUB75_I2S_CFG
       bool _clockphase = true, 
       uint16_t _min_refresh_rate = 60, 
       uint8_t _pixel_color_depth_bits = PIXEL_COLOR_DEPTH_BITS_DEFAULT) 
-      : mx_width(_w), mx_height(_h), chain_length(_chain), gpio(_pinmap), driver(_drv), double_buff(_dbuff), i2sspeed(_i2sspeed), latch_blanking(_latblk), clkphase(_clockphase), min_refresh_rate(_min_refresh_rate)
+      : mx_width(_w), mx_height(_h), chain_length(_chain), gpio(_pinmap), driver(_drv), line_decoder(_line_drv), double_buff(_dbuff), i2sspeed(_i2sspeed), latch_blanking(_latblk), clkphase(_clockphase), min_refresh_rate(_min_refresh_rate)
   {
     setPixelColorDepthBits(_pixel_color_depth_bits);
   }

firmware/patternflow/src/hub75/UPSTREAM.md

@@ -5,11 +5,12 @@ at tag `3.0.13`, commit `a6221865c71fd5aeba885c31b81fe41bd36c5705` (25 October
 2025). It was copied in on 31 July 2026, in `42bfc10`. Upstream's `master` was
 already past the tag that day, but the copy is the tag: every upstream file here
 that [patternflow.patch](patternflow.patch) does not name is byte for byte the
-one at `a622186`.
+one at `a622186`, plus the commits under
+[Taken from upstream since](#taken-from-upstream-since).
 
-The patch is every change since. It is `diff -ruN` of upstream's `src/` against
-this folder, over the files both carry, and [VENDORED.md](VENDORED.md) says why
-each change is there.
+The patch is every change Patternflow made since. It is `diff -ruN` of
+upstream's `src/`, with those commits on it, against this folder, over the
+files both carry, and [VENDORED.md](VENDORED.md) says why each change is there.
 
 ## What was not copied
 
@@ -38,6 +39,7 @@ From the repository root, with GNU diff:
 U=$(mktemp -d)
 git clone -q https://github.com/mrcodetastic/ESP32-HUB75-MatrixPanel-DMA "$U/upstream"
 git -C "$U/upstream" checkout -q a6221865c71fd5aeba885c31b81fe41bd36c5705
+git -C "$U/upstream" cherry-pick -n 7bf3b6c1dfb407f02ff6f3394b56d6f813048f5c
 ln -s "$U/upstream/src" "$U/a"
 ln -s "$PWD/firmware/patternflow/src/hub75" "$U/b"
 (cd "$U" && diff -ruN -x VENDORED.md -x UPSTREAM.md -x UPSTREAM_library.properties \
@@ -52,7 +54,8 @@ Upstream ends some lines in spaces, the patch carries them as context, and an
 editor that trims trailing whitespace (`.editorconfig` asks for that) breaks
 those hunks.
 
-To check it, apply it to a clean copy of the tag. The last `diff -r` prints
+To check it, apply it to a clean copy of the tag with the taken commits on it,
+which is what the rebuild left in `$U/upstream`. The last `diff -r` prints
 nothing:
 
 ```sh
@@ -64,7 +67,14 @@ diff -r -x VENDORED.md -x UPSTREAM.md -x UPSTREAM_library.properties \
 
 ## Taken from upstream since
 
-None yet. A commit taken from upstream gets a line here, oldest first, with its
-hash and title. The rebuild above then picks it after the checkout
-(`git -C "$U/upstream" cherry-pick -n <hash>`), so the patch stays Patternflow's
+A commit taken from upstream gets a line here, in the order it was taken, with
+its hash and title. Its full hash goes on the end of the `cherry-pick -n` line
+in the rebuild above, in the same order, so the patch stays Patternflow's
 changes and nothing upstream wrote.
+
+- `7bf3b6c` "Fix: Properly set line_decoder in HUB75_I2S_CFG struct
+  constructor" (Christopher King, 3 April 2026). At 3.0.13 the constructor
+  never sets `line_decoder`, and `initDisplay()` in `core_display.h` builds its
+  config on the stack, so the field held whatever the stack held. It was taken
+  ahead of older commits because `c09362a`, the oldest one left, reads the
+  field to address every row.