Add AK4540 codec for ES1371

src/include/86box/snd_ac97.h

@@ -101,7 +101,8 @@ enum {
     AC97_CODEC_CS4297A,
     AC97_CODEC_WM9701A,
     AC97_CODEC_STAC9708,
-    AC97_CODEC_STAC9721
+    AC97_CODEC_STAC9721,
+    AC97_CODEC_AK4540
 };
 
 
@@ -141,6 +142,7 @@ extern int		ac97_codec_count, ac97_modem_codec_count,
 
 #ifdef EMU_DEVICE_H
 extern const device_t	ad1881_device;
+extern const device_t	ak4540_device;
 extern const device_t	alc100_device;
 extern const device_t	cs4297_device;
 extern const device_t	cs4297a_device;

src/sound/snd_ac97_codec.c

@@ -44,6 +44,12 @@ static const struct {
 	.vendor_regs = (const ac97_vendor_reg_t[]) {{0x74, 0x0000, 0xff07}, {0x76, 0x0404, 0xdde5}, {0x78, 48000, 0x0000}, {0x7a, 48000, 0x0000}, {0}},
 	.device = &ad1881_device
     },
+    [AC97_CODEC_AK4540] = {
+	.vendor_id = AC97_VENDOR_ID('A', 'K', 'M', 0x00),
+	.misc_flags = AC97_MONOOUT | AC97_PCBEEP | AC97_PHONE | AC97_VIDEO | AC97_AUXIN | AC97_MS | AC97_LPBK,
+	.powerdown_mask = 0x01f,
+	.device = &ak4540_device
+    },
     [AC97_CODEC_ALC100] = {
 	.vendor_id = AC97_VENDOR_ID('A', 'L', 'C', 0x20),
 	.misc_flags = AC97_AUXOUT | AC97_MONOOUT | AC97_PCBEEP | AC97_PHONE | AC97_VIDEO | AC97_AUXIN | AC97_POP | AC97_MS | AC97_LPBK,
@@ -649,6 +655,18 @@ const device_t ad1881_device =
     NULL
 };
 
+const device_t ak4540_device =
+{
+    "Asahi Kasei AK4540",
+    DEVICE_AC97,
+    AC97_CODEC_AK4540,
+    ac97_codec_init, ac97_codec_close, ac97_codec_reset,
+    { NULL },
+    NULL,
+    NULL,
+    NULL
+};
+
 const device_t alc100_device =
 {
     "Avance Logic ALC100",

src/sound/snd_audiopci.c

@@ -1896,6 +1896,9 @@ static const device_config_t es1371_config[] =
 	.type = CONFIG_SELECTION,
 	.selection = {
 		{
+			.description = "Asahi Kasei AK4540",
+			.value = AC97_CODEC_AK4540
+		}, {
 			.description = "Crystal CS4297",
 			.value = AC97_CODEC_CS4297
 		}, {