diff mbox series

[RFC,05/17] hw/misc/tmp105: Implement the 'temperature-sensor' qdev interface

Message ID 20200421121626.23791-6-f4bug@amsat.org
State New
Headers show
Series hw/misc: Introduce a temperature sensor interface | expand

Commit Message

Philippe Mathieu-Daudé April 21, 2020, 12:16 p.m. UTC 
The TMP105 is an I2C temperature sensor.
Let it implement the 'temperature-sensor' interface.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/misc/tmp105.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
diff mbox series

Patch

diff --git a/hw/misc/tmp105.c b/hw/misc/tmp105.c
index 754c8a6eb4..1f0cb28012 100644
--- a/hw/misc/tmp105.c
+++ b/hw/misc/tmp105.c
@@ -26,6 +26,7 @@ 
 #include "qapi/error.h"
 #include "qapi/visitor.h"
 #include "qemu/module.h"
+#include "hw/misc/temp-sensor.h"
 
 static void tmp105_interrupt_update(TMP105State *s)
 {
@@ -74,6 +75,17 @@  static void set_temp_mC(TMP105State *s, int64_t temp_mC, Error **errp)
     tmp105_alarm_update(s);
 }
 
+static float tmp105_get_temp(TempSensor *obj, unsigned sensor_id)
+{
+    return get_temp_mC(TMP105(obj)) / 1000.f;
+}
+
+static void tmp105_set_temp(TempSensor *obj, unsigned sensor_id,
+                            float temp_C, Error **errp)
+{
+    set_temp_mC(TMP105(obj), temp_C * 1000.f, errp);
+}
+
 static void tmp105_get_temperature(Object *obj, Visitor *v, const char *name,
                                    void *opaque, Error **errp)
 {
@@ -261,12 +273,16 @@  static void tmp105_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+    TempSensorClass *tc = TEMPSENSOR_INTERFACE_CLASS(klass);
 
     dc->realize = tmp105_realize;
     k->event = tmp105_event;
     k->recv = tmp105_rx;
     k->send = tmp105_tx;
     dc->vmsd = &vmstate_tmp105;
+    tc->sensor_count = 1;
+    tc->set_temperature = tmp105_set_temp;
+    tc->get_temperature = tmp105_get_temp;
 }
 
 static const TypeInfo tmp105_info = {
@@ -275,6 +291,10 @@  static const TypeInfo tmp105_info = {
     .instance_size = sizeof(TMP105State),
     .instance_init = tmp105_initfn,
     .class_init    = tmp105_class_init,
+    .interfaces = (InterfaceInfo[]) {
+        { TYPE_TEMPSENSOR_INTERFACE },
+        { }
+    },
 };
 
 static void tmp105_register_types(void)