hidpp: add hidpp_device_init()

Make this into a somewhat more sensible API and default to printf as log
handler.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

src/driver-hidpp10.c

@@ -226,9 +226,9 @@ hidpp10drv_probe(struct ratbag_device *device)
 	}
 
 	drv_data = zalloc(sizeof(*drv_data));
+	hidpp_device_init(&base, device->hidraw.fd);
 	base.log_handler = hidpp10_log;
 	base.userdata = device;
-	base.hidraw_fd = device->hidraw.fd;
 
 	/* We can treat all devices as wired devices here. If we talk to the
 	 * correct hidraw device the kernel adjusts the device index for us,

src/hidpp-generic.c

@@ -290,3 +290,17 @@ hidpp_log_buffer(struct hidpp_device *dev,
 
 	hidpp_log(dev, priority, "%s\n", output_buf);
 }
+
+static void
+simple_log(void *userdata, enum hidpp_log_priority priority, const char *format, va_list args)
+{
+	vprintf(format, args);
+}
+
+void
+hidpp_device_init(struct hidpp_device *dev, int fd)
+{
+	dev->hidraw_fd = fd;
+	dev->log_handler = simple_log;
+	dev->userdata = NULL;
+}

src/hidpp-generic.h

@@ -89,6 +89,10 @@ struct hidpp_device {
 	hidpp_log_handler log_handler;
 };
 
+
+void
+hidpp_device_init(struct hidpp_device *dev, int fd);
+
 extern const char *hidpp_errors[0xFF];
 
 const char *

src/hidpp10.h

@@ -50,6 +50,7 @@ hidpp10_device_new_from_wpid(const struct hidpp_device *base,
 struct hidpp10_device*
 hidpp10_device_new_from_idx(const struct hidpp_device *base,
 			    int idx);
+
 void
 hidpp10_device_destroy(struct hidpp10_device *dev);