From 8bbcbc7baf597f3ac3dd5ef9089d7136b3103f65 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Tue, 22 Nov 2022 11:48:50 +0600
Subject: [PATCH] AD1848: Writes to register 27 are rejected on Crystal

---
 src/sound/snd_ad1848.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/sound/snd_ad1848.c b/src/sound/snd_ad1848.c
index de90a3356..558024fb5 100644
--- a/src/sound/snd_ad1848.c
+++ b/src/sound/snd_ad1848.c
@@ -378,6 +378,10 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
 
                 case 25:
                     return;
+                case 27:
+                    if (ad1848->type != AD1848_TYPE_DEFAULT)
+                        return;
+                    break;
             }
             ad1848->regs[ad1848->index] = val;