audio_driver: Drop audio_driver in favour of kuKernelCall

Author: joel16

.gitignore

@@ -54,7 +54,6 @@ Mkfile.old
 dkms.conf
 
 # CMFileManager PSP Specific objects
-app/drivers/audio_driver.S
 app/drivers/display_driver.S
 app/drivers/fs_driver.S
 app/drivers/module_driver.S

Makefile

@@ -1,4 +1,4 @@
-SUBDIRS = audio_driver display_driver fs_driver module_driver app launcher
+SUBDIRS = display_driver fs_driver module_driver app launcher
 
 all:
 	@for dir in $(SUBDIRS); do $(MAKE) -C $$dir; done

app/include/kernel_functions.h

@@ -12,7 +12,7 @@ extern "C" {
 // Kernel function prototypes
 
 // audio_driver functions
-extern int pspAudioSetFrequency(int frequency);
+int pspAudioSetFrequency(int frequency);
 
 // display_driver functions
 extern int pspDisplayEnable(void);

app/source/kernel_functions.cpp

@@ -1,7 +1,25 @@
+#include <pspaudio_kernel.h>
+
 #include "kernel_functions.h"
+#include "kubridge.h"
+#include "log.h"
+#include "systemctrl.h"
+#include "utils.h"
 
 // audio_driver functions
-int pspAudioSetFrequency(int frequency);
+int pspAudioSetFrequency(int frequency) {
+    struct KernelCallArg args = { 0 };
+    void *func_addr = nullptr;
+    int ret = 0;
+    
+    func_addr = (void*)sctrlHENFindFunction("sceAudio_driver", "sceAudio_driver", 0xA2BEAA6C);
+    args.arg1 = static_cast<u32>(frequency);
+
+    if (R_FAILED(ret = kuKernelCall(func_addr, &args)))
+        Log::Error("%s: pspAudioSetFrequency returns 0x%08X\n", __func__, args.ret1);
+
+	return args.ret1;
+}
 
 // display driver functions
 int pspDisplayEnable(void);

app/source/utils.cpp

@@ -21,8 +21,8 @@ enum PspCtrlButtons PSP_CTRL_ENTER, PSP_CTRL_CANCEL;
 BROWSE_STATE device = BROWSE_STATE_EXTERNAL;
 int g_psp_language = PSP_SYSTEMPARAM_LANGUAGE_ENGLISH;
 
-extern unsigned char audio_driver_prx_start[], display_driver_prx_start[], fs_driver_prx_start[], module_driver_prx_start[];
-extern unsigned int audio_driver_prx_size, display_driver_prx_size, fs_driver_prx_size, module_driver_prx_size;
+extern unsigned char display_driver_prx_start[], fs_driver_prx_start[], module_driver_prx_start[];
+extern unsigned int display_driver_prx_size, fs_driver_prx_size, module_driver_prx_size;
 
 namespace Utils {
     constexpr unsigned int CTRL_DEADZONE_DELAY = 500000;
@@ -43,7 +43,6 @@ namespace Utils {
     } Module;
 
     static std::vector<Module> kernel_modules {
-        { "audio_driver.prx", -1, audio_driver_prx_start, audio_driver_prx_size },
         { "display_driver.prx", -1, display_driver_prx_start, display_driver_prx_size },
         { "fs_driver.prx", -1, fs_driver_prx_start, fs_driver_prx_size }
     };