[PATCH 2/4] isa: extract FDC37M81X to a separate file

[Paolo Bonzini]

isa-superio.c currently defines a SuperIO chip that depends on
CONFIG_IDE_ISA, but not all users of isa-superio.c depend on that
symbol.  Extract the chip to a separate file so that there is an
obvious place to select IDE_ISA.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/isa/fdc37m81x-superio.c | 37 +++++++++++++++++++++++++++++++++++++
 hw/isa/isa-superio.c       | 19 -------------------
 hw/isa/Kconfig             |  5 +++++
 hw/isa/meson.build         |  1 +
 hw/mips/Kconfig            |  2 +-
 5 files changed, 44 insertions(+), 20 deletions(-)
 create mode 100644 hw/isa/fdc37m81x-superio.c

diff --git a/hw/isa/fdc37m81x-superio.c b/hw/isa/fdc37m81x-superio.c
new file mode 100644
index 00000000000..5ad769b69e8
--- /dev/null
+++ b/hw/isa/fdc37m81x-superio.c
@@ -0,0 +1,37 @@
+/*
+ * Generic ISA Super I/O
+ *
+ * Copyright (c) 2018 Philippe Mathieu-Daudé
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "hw/isa/superio.h"
+
+/* SMS FDC37M817 Super I/O */
+static void fdc37m81x_class_init(ObjectClass *klass, void *data)
+{
+    ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
+
+    sc->serial.count = 2; /* NS16C550A */
+    sc->parallel.count = 1;
+    sc->floppy.count = 1; /* SMSC 82077AA Compatible */
+    sc->ide.count = 0;
+}
+
+static const TypeInfo fdc37m81x_type_info = {
+    .name          = TYPE_FDC37M81X_SUPERIO,
+    .parent        = TYPE_ISA_SUPERIO,
+    .instance_size = sizeof(ISASuperIODevice),
+    .class_init    = fdc37m81x_class_init,
+};
+
+static void fdc37m81x_register_types(void)
+{
+    type_register_static(&fdc37m81x_type_info);
+}
+
+type_init(fdc37m81x_register_types)
diff --git a/hw/isa/isa-superio.c b/hw/isa/isa-superio.c
index 7dbfc374da3..80e0c34652e 100644
--- a/hw/isa/isa-superio.c
+++ b/hw/isa/isa-superio.c
@@ -187,28 +187,9 @@ static const TypeInfo isa_superio_type_info = {
     .class_init = isa_superio_class_init,
 };
 
-/* SMS FDC37M817 Super I/O */
-static void fdc37m81x_class_init(ObjectClass *klass, void *data)
-{
-    ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
-
-    sc->serial.count = 2; /* NS16C550A */
-    sc->parallel.count = 1;
-    sc->floppy.count = 1; /* SMSC 82077AA Compatible */
-    sc->ide.count = 0;
-}
-
-static const TypeInfo fdc37m81x_type_info = {
-    .name          = TYPE_FDC37M81X_SUPERIO,
-    .parent        = TYPE_ISA_SUPERIO,
-    .instance_size = sizeof(ISASuperIODevice),
-    .class_init    = fdc37m81x_class_init,
-};
-
 static void isa_superio_register_types(void)
 {
     type_register_static(&isa_superio_type_info);
-    type_register_static(&fdc37m81x_type_info);
 }
 
 type_init(isa_superio_register_types)
diff --git a/hw/isa/Kconfig b/hw/isa/Kconfig
index 7884179d08b..af856af052d 100644
--- a/hw/isa/Kconfig
+++ b/hw/isa/Kconfig
@@ -23,6 +23,11 @@ config ISA_SUPERIO
     # Some users of ISA_SUPERIO do not use it
     #select IDE_ISA
 
+config FDC37M81X
+    bool
+    select ISA_BUS
+    select IDE_ISA
+
 config PC87312
     bool
     select ISA_SUPERIO
diff --git a/hw/isa/meson.build b/hw/isa/meson.build
index 2ab99ce0c6b..f650b395071 100644
--- a/hw/isa/meson.build
+++ b/hw/isa/meson.build
@@ -4,6 +4,7 @@ system_ss.add(when: 'CONFIG_ISA_BUS', if_true: 
files('isa-bus.c'))
 system_ss.add(when: 'CONFIG_ISA_SUPERIO', if_true: files('isa-superio.c'))
 system_ss.add(when: 'CONFIG_PC87312', if_true: files('pc87312.c'))
 system_ss.add(when: 'CONFIG_PIIX', if_true: files('piix.c'))
+system_ss.add(when: 'CONFIG_FDC37M81X', if_true: files('fdc37m81x-superio.c'))
 system_ss.add(when: 'CONFIG_SMC37C669', if_true: files('smc37c669-superio.c'))
 system_ss.add(when: 'CONFIG_VT82C686', if_true: files('vt82c686.c'))
 
diff --git a/hw/mips/Kconfig b/hw/mips/Kconfig
index ab61af209a0..94b969c21db 100644
--- a/hw/mips/Kconfig
+++ b/hw/mips/Kconfig
@@ -1,7 +1,7 @@
 config MALTA
     bool
+    select FDC37M81X
     select GT64120
-    select ISA_SUPERIO
     select PIIX
 
 config MIPSSIM
-- 
2.43.0