brintos

brintos / linux-shallow public Read only

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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  0x3000000112 13#define PXA3XX_GCU_BATCH_WORDS   819214 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