40 lines
929 B
C
40 lines
929 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PXA3XX_GCU_H__
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#define __PXA3XX_GCU_H__
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#include <linux/types.h>
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/* Number of 32bit words in display list (ring buffer). */
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#define PXA3XX_GCU_BUFFER_WORDS ((256 * 1024 - 256) / 4)
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/* To be increased when breaking the ABI */
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#define PXA3XX_GCU_SHARED_MAGIC 0x30000001
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#define PXA3XX_GCU_BATCH_WORDS 8192
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struct pxa3xx_gcu_shared {
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u32 buffer[PXA3XX_GCU_BUFFER_WORDS];
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bool hw_running;
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unsigned long buffer_phys;
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unsigned int num_words;
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unsigned int num_writes;
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unsigned int num_done;
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unsigned int num_interrupts;
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unsigned int num_wait_idle;
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unsigned int num_wait_free;
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unsigned int num_idle;
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u32 magic;
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};
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/* Initialization and synchronization.
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* Hardware is started upon write(). */
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#define PXA3XX_GCU_IOCTL_RESET _IO('G', 0)
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#define PXA3XX_GCU_IOCTL_WAIT_IDLE _IO('G', 2)
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#endif /* __PXA3XX_GCU_H__ */
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