[Qemu-devel] [PATCH v4 3/4] hw/char: QOM'ify lm32_juart.c

[xiaoqiang zhao]

* Drop the old SysBus init function
* Call qemu_chr_add_handlers in the realize callback
* Use qdev chardev prop instead of qemu_char_get_next_serial

Signed-off-by: xiaoqiang zhao <zxq_yx_...@163.com>
---
 hw/char/lm32_juart.c | 17 ++++++++---------
 hw/lm32/lm32.h       |  4 ++++
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/hw/char/lm32_juart.c b/hw/char/lm32_juart.c
index 5bf8acf..28c2cf7 100644
--- a/hw/char/lm32_juart.c
+++ b/hw/char/lm32_juart.c
@@ -114,17 +114,13 @@ static void juart_reset(DeviceState *d)
     s->jrx = 0;
 }
 
-static int lm32_juart_init(SysBusDevice *dev)
+static void lm32_juart_realize(DeviceState *dev, Error **errp)
 {
     LM32JuartState *s = LM32_JUART(dev);
 
-    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
-    s->chr = qemu_char_get_next_serial();
     if (s->chr) {
         qemu_chr_add_handlers(s->chr, juart_can_rx, juart_rx, juart_event, s);
     }
-
-    return 0;
 }
 
 static const VMStateDescription vmstate_lm32_juart = {
@@ -138,16 +134,19 @@ static const VMStateDescription vmstate_lm32_juart = {
     }
 };
 
+static Property lm32_juart_properties[] = {
+    DEFINE_PROP_CHR("chardev", LM32JuartState, chr),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void lm32_juart_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 
-    k->init = lm32_juart_init;
     dc->reset = juart_reset;
     dc->vmsd = &vmstate_lm32_juart;
-    /* Reason: init() method uses qemu_char_get_next_serial() */
-    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->props = lm32_juart_properties;
+    dc->realize = lm32_juart_realize;
 }
 
 static const TypeInfo lm32_juart_info = {
diff --git a/hw/lm32/lm32.h b/hw/lm32/lm32.h
index 18aa6fd..3b33ed4 100644
--- a/hw/lm32/lm32.h
+++ b/hw/lm32/lm32.h
@@ -2,6 +2,7 @@
 #define HW_LM32_H 1
 
 #include "hw/char/lm32_juart.h"
+#include "sysemu/char.h"
 
 static inline DeviceState *lm32_pic_init(qemu_irq cpu_irq)
 {
@@ -19,8 +20,11 @@ static inline DeviceState *lm32_pic_init(qemu_irq cpu_irq)
 static inline DeviceState *lm32_juart_init(void)
 {
     DeviceState *dev;
+    CharDriverState *chr;
 
+    chr = qemu_char_get_next_serial();
     dev = qdev_create(NULL, TYPE_LM32_JUART);
+    qdev_prop_set_chr(dev, "chardev", chr);
     qdev_init_nofail(dev);
 
     return dev;
-- 
2.1.4