drivers/video/fbdev/pxa3xx-gcu.h

   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