[PATCH v5 5/9] hw/misc/pca9552: Add a 'description' property for debugging purpose

[Philippe Mathieu-Daudé]

Add a description field to distinguish between multiple devices.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/misc/pca9552.h |  1 +
 hw/misc/pca9552.c         | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h
index 90843b03b8..bf1a589137 100644
--- a/include/hw/misc/pca9552.h
+++ b/include/hw/misc/pca9552.h
@@ -27,6 +27,7 @@ typedef struct PCA955xState {
     uint8_t pointer;
 
     uint8_t regs[PCA955X_NR_REGS];
+    char *description; /* For debugging purpose only */
 } PCA955xState;
 
 #endif
diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c
index 34062dbb69..d6d84c6451 100644
--- a/hw/misc/pca9552.c
+++ b/hw/misc/pca9552.c
@@ -13,6 +13,7 @@
 #include "qemu/osdep.h"
 #include "qemu/log.h"
 #include "qemu/module.h"
+#include "hw/qdev-properties.h"
 #include "hw/misc/pca9552.h"
 #include "hw/misc/pca9552_regs.h"
 #include "migration/vmstate.h"
@@ -319,10 +320,19 @@ static void pca955x_initfn(Object *obj)
 static void pca955x_realize(DeviceState *dev, Error **errp)
 {
     PCA955xClass *k = PCA955X_GET_CLASS(dev);
+    PCA955xState *s = PCA955X(dev);
 
     assert(k->pin_count <= PCA955X_PIN_COUNT_MAX);
+    if (!s->description) {
+        s->description = g_strdup("pca-unspecified");
+    }
 }
 
+static Property pca955x_properties[] = {
+    DEFINE_PROP_STRING("description", PCA955xState, description),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void pca955x_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -332,6 +342,7 @@ static void pca955x_class_init(ObjectClass *klass, void 
*data)
     k->recv = pca955x_recv;
     k->send = pca955x_send;
     dc->realize = pca955x_realize;
+    device_class_set_props(dc, pca955x_properties);
 }
 
 static const TypeInfo pca955x_info = {
-- 
2.21.3