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/* SPDX-License-Identifier: GPL-2.0 */
#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__ */
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