linux/drivers/video/pxa3xx-gcu.h
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   1#ifndef __PXA3XX_GCU_H__
   2#define __PXA3XX_GCU_H__
   3
   4#include <linux/types.h>
   5
   6/* Number of 32bit words in display list (ring buffer). */
   7#define PXA3XX_GCU_BUFFER_WORDS  ((256 * 1024 - 256) / 4)
   8
   9/* To be increased when breaking the ABI */
  10#define PXA3XX_GCU_SHARED_MAGIC  0x30000001
  11
  12#define PXA3XX_GCU_BATCH_WORDS   8192
  13
  14struct pxa3xx_gcu_shared {
  15        u32            buffer[PXA3XX_GCU_BUFFER_WORDS];
  16
  17        bool           hw_running;
  18
  19        unsigned long  buffer_phys;
  20
  21        unsigned int   num_words;
  22        unsigned int   num_writes;
  23        unsigned int   num_done;
  24        unsigned int   num_interrupts;
  25        unsigned int   num_wait_idle;
  26        unsigned int   num_wait_free;
  27        unsigned int   num_idle;
  28
  29        u32            magic;
  30};
  31
  32/* Initialization and synchronization.
  33 * Hardware is started upon write(). */
  34#define PXA3XX_GCU_IOCTL_RESET          _IO('G', 0)
  35#define PXA3XX_GCU_IOCTL_WAIT_IDLE      _IO('G', 2)
  36
  37#endif /* __PXA3XX_GCU_H__ */
  38
  39
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