18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef __PXA3XX_GCU_H__ 38c2ecf20Sopenharmony_ci#define __PXA3XX_GCU_H__ 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/types.h> 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci/* Number of 32bit words in display list (ring buffer). */ 88c2ecf20Sopenharmony_ci#define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4) 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci/* To be increased when breaking the ABI */ 118c2ecf20Sopenharmony_ci#define PXA3XX_GCU_SHARED_MAGIC 0x30000001 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#define PXA3XX_GCU_BATCH_WORDS 8192 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_cistruct pxa3xx_gcu_shared { 168c2ecf20Sopenharmony_ci u32 buffer[PXA3XX_GCU_BUFFER_WORDS]; 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci bool hw_running; 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci unsigned long buffer_phys; 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci unsigned int num_words; 238c2ecf20Sopenharmony_ci unsigned int num_writes; 248c2ecf20Sopenharmony_ci unsigned int num_done; 258c2ecf20Sopenharmony_ci unsigned int num_interrupts; 268c2ecf20Sopenharmony_ci unsigned int num_wait_idle; 278c2ecf20Sopenharmony_ci unsigned int num_wait_free; 288c2ecf20Sopenharmony_ci unsigned int num_idle; 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci u32 magic; 318c2ecf20Sopenharmony_ci}; 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci/* Initialization and synchronization. 348c2ecf20Sopenharmony_ci * Hardware is started upon write(). */ 358c2ecf20Sopenharmony_ci#define PXA3XX_GCU_IOCTL_RESET _IO('G', 0) 368c2ecf20Sopenharmony_ci#define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2) 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#endif /* __PXA3XX_GCU_H__ */ 398c2ecf20Sopenharmony_ci 40