1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PXA3XX_GCU_H__
3#define __PXA3XX_GCU_H__
4
5#include <linux/types.h>
6
7/* Number of 32bit words in display list (ring buffer). */
8#define PXA3XX_GCU_BUFFER_WORDS  ((256 * 1024 - 256) / 4)
9
10/* To be increased when breaking the ABI */
11#define PXA3XX_GCU_SHARED_MAGIC  0x30000001
12
13#define PXA3XX_GCU_BATCH_WORDS   8192
14
15struct pxa3xx_gcu_shared {
16	u32            buffer[PXA3XX_GCU_BUFFER_WORDS];
17
18	bool           hw_running;
19
20	unsigned long  buffer_phys;
21
22	unsigned int   num_words;
23	unsigned int   num_writes;
24	unsigned int   num_done;
25	unsigned int   num_interrupts;
26	unsigned int   num_wait_idle;
27	unsigned int   num_wait_free;
28	unsigned int   num_idle;
29
30	u32            magic;
31};
32
33/* Initialization and synchronization.
34 * Hardware is started upon write(). */
35#define PXA3XX_GCU_IOCTL_RESET		_IO('G', 0)
36#define PXA3XX_GCU_IOCTL_WAIT_IDLE	_IO('G', 2)
37
38#endif /* __PXA3XX_GCU_H__ */
39
40