From 43ca65bf04d052608a527d4678e85ef215232ad2 Mon Sep 17 00:00:00 2001
From: RichardG867 <richardg867@gmail.com>
Date: Wed, 19 Nov 2025 17:15:45 -0300
Subject: [PATCH] AC97 Codec: Devbranch some non-working stuff

---
 CMakeLists.txt               | 1 +
 src/include/86box/snd_ac97.h | 2 ++
 src/sound/CMakeLists.txt     | 4 ++++
 src/sound/snd_ac97_codec.c   | 4 ++++
 src/sound/sound.c            | 2 ++
 5 files changed, 13 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f6c18af0..3004b3711 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -186,6 +186,7 @@ cmake_dependent_option(WACOM          "Wacom Input Devices"
 cmake_dependent_option(XL24           "ATI VGA Wonder XL24 (ATI-28800-6)"        ON    "DEV_BRANCH"  OFF)
 cmake_dependent_option(NETSWITCH      "Network Switch Support"                   ON    "DEV_BRANCH"  OFF)
 cmake_dependent_option(VFIO           "Virtual Function I/O"                     ON    "DEV_BRANCH"  OFF)
+cmake_dependent_option(SOFTMODEM      "AC'97 Softmodem"                          ON    "DEV_BRANCH"  OFF)
 
 # Ditto but for Qt
 if(QT)
diff --git a/src/include/86box/snd_ac97.h b/src/include/86box/snd_ac97.h
index d8f2f6953..0bad4efa0 100644
--- a/src/include/86box/snd_ac97.h
+++ b/src/include/86box/snd_ac97.h
@@ -166,7 +166,9 @@ extern const device_t stac9721_device;
 extern const device_t tr28023_device;
 extern const device_t w83971d_device;
 extern const device_t wm9701a_device;
+#ifdef USE_SOFTMODEM
 extern const device_t si3036_device;
+#endif
 
 extern const device_t ac97_via_device;
 #endif
diff --git a/src/sound/CMakeLists.txt b/src/sound/CMakeLists.txt
index ccb54ab19..a6a9b691a 100644
--- a/src/sound/CMakeLists.txt
+++ b/src/sound/CMakeLists.txt
@@ -192,6 +192,10 @@ if(OPL4ML)
     target_compile_definitions(snd PRIVATE USE_OPL4ML)
     target_sources(snd PRIVATE midi_opl4.c midi_opl4_yrw801.c)
 endif()
+
+if(SOFTMODEM)
+    target_compile_definitions(snd PRIVATE USE_SOFTMODEM)
+endif()
  
 find_package(PkgConfig)
 pkg_check_modules(SERIALPORT libserialport)
diff --git a/src/sound/snd_ac97_codec.c b/src/sound/snd_ac97_codec.c
index 04abab305..071356873 100644
--- a/src/sound/snd_ac97_codec.c
+++ b/src/sound/snd_ac97_codec.c
@@ -114,6 +114,7 @@ static const struct {
         .reset_flags = AC97_DAC_18B | AC97_ADC_18B,
         .pcsr_mask   = 0x3f
     },
+#ifdef USE_SOFTMODEM
     {
         .device      = &si3036_device,
         .misc_flags  = AC97_MODEM | AC97_GAIN_3B,
@@ -124,6 +125,7 @@ static const struct {
         .gpo_mask    = 0xfc3f,
         .vendor_regs = (const ac97_vendor_reg_t[]) {{0, 0x5a, 0x0142, 0x0000}, {0, 0x5c, 0xf010, 0xfefd}, {0, 0x5e, 0x004c, 0x0000}, {0, 0x62, 0x0000, 0x01f8}, {0, 0x64, 0x0080, 0x0000}, {0}}
     }
+#endif
   // clang-format on
 };
 
@@ -958,6 +960,7 @@ const device_t wm9701a_device = {
     .config        = NULL
 };
 
+#ifdef USE_SOFTMODEM
 const device_t si3036_device = {
     .name          = "Silicon Laboratories Si3036 Modem",
     .internal_name = "si3036",
@@ -971,3 +974,4 @@ const device_t si3036_device = {
     .force_redraw  = NULL,
     .config        = NULL
 };
+#endif
diff --git a/src/sound/sound.c b/src/sound/sound.c
index 94a11ad00..4d9675441 100644
--- a/src/sound/sound.c
+++ b/src/sound/sound.c
@@ -187,7 +187,9 @@ static const SOUND_CARD sound_cards[] = {
     /* AC97 */
     { &ad1881_device                },
     { &cs4297a_device               },
+#ifdef USE_SOFTMODEM
     { &si3036_device                },
+#endif
     { NULL                          }
     // clang-format on
 };