| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef __PXA3XX_GCU_H__ |
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| 3 | #define __PXA3XX_GCU_H__ |
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| 4 | |
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| 5 | #include <linux/types.h> |
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| 6 | |
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| 7 | /* Number of 32bit words in display list (ring buffer). */ |
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| 8 | #define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4) |
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| 9 | |
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| 10 | /* To be increased when breaking the ABI */ |
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| 11 | #define PXA3XX_GCU_SHARED_MAGIC 0x30000001 |
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| 12 | |
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| 13 | #define PXA3XX_GCU_BATCH_WORDS 8192 |
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| 14 | |
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| 15 | struct pxa3xx_gcu_shared { |
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| 16 | u32 buffer[PXA3XX_GCU_BUFFER_WORDS]; |
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| 17 | |
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| 18 | bool hw_running; |
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| 19 | |
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| 20 | unsigned long buffer_phys; |
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| 21 | |
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| 22 | unsigned int num_words; |
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| 23 | unsigned int num_writes; |
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| 24 | unsigned int num_done; |
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| 25 | unsigned int num_interrupts; |
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| 26 | unsigned int num_wait_idle; |
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| 27 | unsigned int num_wait_free; |
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| 28 | unsigned int num_idle; |
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| 29 | |
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| 30 | u32 magic; |
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| 31 | }; |
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| 32 | |
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| 33 | /* Initialization and synchronization. |
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| 34 | * Hardware is started upon write(). */ |
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| 35 | #define PXA3XX_GCU_IOCTL_RESET _IO('G', 0) |
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| 36 | #define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2) |
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| 37 | |
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| 38 | #endif /* __PXA3XX_GCU_H__ */ |
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| 39 | |
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| 40 | |
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