83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
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* Copyright (C) 2010-2015 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _PXP_DMA
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#define _PXP_DMA
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#include <uapi/linux/pxp_dma.h>
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struct pxp_tx_desc {
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struct dma_async_tx_descriptor txd;
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struct list_head tx_list;
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struct list_head list;
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int len;
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union {
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struct pxp_layer_param s0_param;
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struct pxp_layer_param out_param;
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struct pxp_layer_param ol_param;
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struct pxp_layer_param processing_param;
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} layer_param;
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struct pxp_proc_data proc_data;
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u32 hist_status; /* Histogram output status */
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struct pxp_tx_desc *next;
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};
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struct pxp_channel {
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struct dma_chan dma_chan;
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dma_cookie_t completed; /* last completed cookie */
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enum pxp_channel_status status;
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void *client; /* Only one client per channel */
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unsigned int n_tx_desc;
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struct pxp_tx_desc *desc; /* allocated tx-descriptors */
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struct list_head active_list; /* active tx-descriptors */
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struct list_head free_list; /* free tx-descriptors */
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struct list_head queue; /* queued tx-descriptors */
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struct list_head list; /* track queued channel number */
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spinlock_t lock; /* protects sg[0,1], queue */
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struct mutex chan_mutex; /* protects status, cookie, free_list */
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int active_buffer;
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unsigned int eof_irq;
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char eof_name[16]; /* EOF IRQ name for request_irq() */
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};
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#define to_tx_desc(tx) container_of(tx, struct pxp_tx_desc, txd)
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#define to_pxp_channel(d) container_of(d, struct pxp_channel, dma_chan)
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void pxp_txd_ack(struct dma_async_tx_descriptor *txd,
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struct pxp_channel *pxp_chan);
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#ifdef CONFIG_MXC_PXP_CLIENT_DEVICE
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int register_pxp_device(void);
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void unregister_pxp_device(void);
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#else
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int register_pxp_device(void) { return 0; }
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void unregister_pxp_device(void) {}
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#endif
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void pxp_fill(
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u32 bpp,
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u32 value,
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u32 width,
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u32 height,
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u32 output_buffer,
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u32 output_pitch);
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void m4_process(void);
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#endif
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