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 15 struct 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