diff mbox series

[v6,5/9] hw/misc/pca9552: Add a 'description' property for debugging purpose

Message ID 20200623072723.6324-6-f4bug@amsat.org
State New
Headers show
Series hw/misc/pca9552: Trace GPIO change events | expand

Commit Message

Philippe Mathieu-Daudé June 23, 2020, 7:27 a.m. UTC 
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         | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)
diff mbox series

Patch

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 4de57dbe2e..2cc52b0205 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"
@@ -317,13 +318,30 @@  static void pca955x_initfn(Object *obj)
     }
 }
 
+static void pca955x_realize(DeviceState *dev, Error **errp)
+{
+    PCA955xState *s = PCA955X(dev);
+
+    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);
     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 
     k->event = pca955x_event;
     k->recv = pca955x_recv;
     k->send = pca955x_send;
+    dc->realize = pca955x_realize;
+    device_class_set_props(dc, pca955x_properties);
 }
 
 static const TypeInfo pca955x_info = {