+
+static unsigned long (*get_hsync_invperiod)(struct device *dev);
+
+static void inline sharpsl_wait_sync(int gpio)
+{
+ while((GPLR(gpio) & GPIO_bit(gpio)) == 0);
+ while((GPLR(gpio) & GPIO_bit(gpio)) != 0);
+}
+
+static struct device *spitz_pxafb_dev;
+
+static int is_pxafb_device(struct device * dev, void * data)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device, dev);
+
+ return (strncmp(pdev->name, "pxa2xx-fb", 9) == 0);
+}
+
+static unsigned long spitz_get_hsync_invperiod(void)
+{
+#ifdef CONFIG_FB_PXA
+ if (!spitz_pxafb_dev) {
+ spitz_pxafb_dev = bus_find_device(&platform_bus_type, NULL, NULL, is_pxafb_device);
+ if (!spitz_pxafb_dev)
+ return 0;
+ }
+ if (!get_hsync_invperiod)
+ get_hsync_invperiod = symbol_get(pxafb_get_hsync_time);
+ if (!get_hsync_invperiod)
+#endif
+ return 0;
+
+ return get_hsync_invperiod(spitz_pxafb_dev);
+}
+
+static void spitz_put_hsync(void)
+{
+ put_device(spitz_pxafb_dev);
+ if (get_hsync_invperiod)
+ symbol_put(pxafb_get_hsync_time);
+ spitz_pxafb_dev = NULL;
+ get_hsync_invperiod = NULL;
+}
+
+static void spitz_wait_hsync(void)
+{
+ sharpsl_wait_sync(SPITZ_GPIO_HSYNC);
+}
+