diff options
Diffstat (limited to 'drivers/video/fbdev/pxa3xx-gcu.h')
| -rw-r--r-- | drivers/video/fbdev/pxa3xx-gcu.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/video/fbdev/pxa3xx-gcu.h b/drivers/video/fbdev/pxa3xx-gcu.h new file mode 100644 index 0000000000..ea9489d16d --- /dev/null +++ b/drivers/video/fbdev/pxa3xx-gcu.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PXA3XX_GCU_H__ +#define __PXA3XX_GCU_H__ + +#include <linux/types.h> + +/* Number of 32bit words in display list (ring buffer). */ +#define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4) + +/* To be increased when breaking the ABI */ +#define PXA3XX_GCU_SHARED_MAGIC 0x30000001 + +#define PXA3XX_GCU_BATCH_WORDS 8192 + +struct pxa3xx_gcu_shared { + u32 buffer[PXA3XX_GCU_BUFFER_WORDS]; + + bool hw_running; + + unsigned long buffer_phys; + + unsigned int num_words; + unsigned int num_writes; + unsigned int num_done; + unsigned int num_interrupts; + unsigned int num_wait_idle; + unsigned int num_wait_free; + unsigned int num_idle; + + u32 magic; +}; + +/* Initialization and synchronization. + * Hardware is started upon write(). */ +#define PXA3XX_GCU_IOCTL_RESET _IO('G', 0) +#define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2) + +#endif /* __PXA3XX_GCU_H__ */ + |