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path: root/drivers/video/fbdev/pxa3xx-gcu.h
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Diffstat (limited to 'drivers/video/fbdev/pxa3xx-gcu.h')
-rw-r--r--drivers/video/fbdev/pxa3xx-gcu.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/video/fbdev/pxa3xx-gcu.h b/drivers/video/fbdev/pxa3xx-gcu.h
new file mode 100644
index 000000000000..0428ed03dc49
--- /dev/null
+++ b/drivers/video/fbdev/pxa3xx-gcu.h
@@ -0,0 +1,38 @@
+#ifndef __PXA3XX_GCU_H__
+#define __PXA3XX_GCU_H__
+
+#include <linux/types.h>
+
+/* Number of 32bit words in display list (ring buffer). */
+#define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4)
+
+/* To be increased when breaking the ABI */
+#define PXA3XX_GCU_SHARED_MAGIC 0x30000001
+
+#define PXA3XX_GCU_BATCH_WORDS 8192
+
+struct pxa3xx_gcu_shared {
+ u32 buffer[PXA3XX_GCU_BUFFER_WORDS];
+
+ bool hw_running;
+
+ unsigned long buffer_phys;
+
+ unsigned int num_words;
+ unsigned int num_writes;
+ unsigned int num_done;
+ unsigned int num_interrupts;
+ unsigned int num_wait_idle;
+ unsigned int num_wait_free;
+ unsigned int num_idle;
+
+ u32 magic;
+};
+
+/* Initialization and synchronization.
+ * Hardware is started upon write(). */
+#define PXA3XX_GCU_IOCTL_RESET _IO('G', 0)
+#define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2)
+
+#endif /* __PXA3XX_GCU_H__ */
+