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[3/4] hw/char: Add QOM property for STM32L4x5 USART clock frequency

Message ID 20240507185854.34572-4-ines.varhol@telecom-paris.fr (mailing list archive)
State New, archived
Headers show
Series Check clock connection between STM32L4x5 RCC and peripherals | expand

Commit Message

Inès Varhol May 7, 2024, 6:55 p.m. UTC 
This QOM property will be used to check the clock frequency from QTests.

Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>
---
 hw/char/stm32l4x5_usart.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/char/stm32l4x5_usart.c b/hw/char/stm32l4x5_usart.c
index fc5dcac0c4..5fb3874f35 100644
--- a/hw/char/stm32l4x5_usart.c
+++ b/hw/char/stm32l4x5_usart.c
@@ -26,6 +26,7 @@ 
 #include "hw/clock.h"
 #include "hw/irq.h"
 #include "hw/qdev-clock.h"
+#include "qapi/visitor.h"
 #include "hw/qdev-properties.h"
 #include "hw/qdev-properties-system.h"
 #include "hw/registerfields.h"
@@ -523,6 +524,14 @@  static Property stm32l4x5_usart_base_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static void clock_freq_get(Object *obj, Visitor *v,
+    const char *name, void *opaque, Error **errp)
+{
+    Stm32l4x5UsartBaseState *s = STM32L4X5_USART_BASE(obj);
+    uint32_t clock_freq_hz = clock_get_hz(s->clk);
+    visit_type_uint32(v, name, &clock_freq_hz, errp);
+}
+
 static void stm32l4x5_usart_base_init(Object *obj)
 {
     Stm32l4x5UsartBaseState *s = STM32L4X5_USART_BASE(obj);
@@ -534,6 +543,9 @@  static void stm32l4x5_usart_base_init(Object *obj)
     sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
 
     s->clk = qdev_init_clock_in(DEVICE(s), "clk", NULL, s, 0);
+
+    object_property_add(obj, "clock-freq-hz", "uint32",
+                        clock_freq_get, NULL, NULL, NULL);
 }
 
 static int stm32l4x5_usart_base_post_load(void *opaque, int version_id)
@@ -546,8 +558,8 @@  static int stm32l4x5_usart_base_post_load(void *opaque, int version_id)
 
 static const VMStateDescription vmstate_stm32l4x5_usart_base = {
     .name = TYPE_STM32L4X5_USART_BASE,
-    .version_id = 1,
-    .minimum_version_id = 1,
+    .version_id = 2,
+    .minimum_version_id = 2,
     .post_load = stm32l4x5_usart_base_post_load,
     .fields = (VMStateField[]) {
         VMSTATE_UINT32(cr1, Stm32l4x5UsartBaseState),