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Daniel Mack364dbdf2010-11-04 14:44:00 -04001#ifndef __PXA3XX_GCU_H__
2#define __PXA3XX_GCU_H__
3
4#include <linux/types.h>
5
6/* Number of 32bit words in display list (ring buffer). */
7#define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4)
8
9/* To be increased when breaking the ABI */
10#define PXA3XX_GCU_SHARED_MAGIC 0x30000001
11
12#define PXA3XX_GCU_BATCH_WORDS 8192
13
14struct pxa3xx_gcu_shared {
15 u32 buffer[PXA3XX_GCU_BUFFER_WORDS];
16
17 bool hw_running;
18
19 unsigned long buffer_phys;
20
21 unsigned int num_words;
22 unsigned int num_writes;
23 unsigned int num_done;
24 unsigned int num_interrupts;
25 unsigned int num_wait_idle;
26 unsigned int num_wait_free;
27 unsigned int num_idle;
28
29 u32 magic;
30};
31
32/* Initialization and synchronization.
33 * Hardware is started upon write(). */
34#define PXA3XX_GCU_IOCTL_RESET _IO('G', 0)
35#define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2)
36
37#endif /* __PXA3XX_GCU_H__ */
38