97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* Analog Devices PPI header file
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*
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* Copyright (c) 2011 Analog Devices Inc.
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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 version 2 as
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* published by the Free Software Foundation.
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _PPI_H_
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#define _PPI_H_
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#include <linux/interrupt.h>
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#include <asm/blackfin.h>
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#include <asm/bfin_ppi.h>
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/* EPPI */
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#ifdef EPPI_EN
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#define PORT_EN EPPI_EN
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#define PORT_DIR EPPI_DIR
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#define DMA32 0
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#define PACK_EN PACKEN
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#endif
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/* EPPI3 */
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#ifdef EPPI0_CTL2
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#define PORT_EN EPPI_CTL_EN
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#define PORT_DIR EPPI_CTL_DIR
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#define PACK_EN EPPI_CTL_PACKEN
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#define DMA32 0
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#define DLEN_8 EPPI_CTL_DLEN08
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#define DLEN_16 EPPI_CTL_DLEN16
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#endif
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struct ppi_if;
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struct ppi_params {
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u32 width; /* width in pixels */
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u32 height; /* height in lines */
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u32 hdelay; /* delay after the HSYNC in pixels */
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u32 vdelay; /* delay after the VSYNC in lines */
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u32 line; /* total pixels per line */
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u32 frame; /* total lines per frame */
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u32 hsync; /* HSYNC length in pixels */
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u32 vsync; /* VSYNC length in lines */
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int bpp; /* bits per pixel */
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int dlen; /* data length for ppi in bits */
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u32 ppi_control; /* ppi configuration */
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u32 int_mask; /* interrupt mask */
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};
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struct ppi_ops {
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int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler);
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void (*detach_irq)(struct ppi_if *ppi);
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int (*start)(struct ppi_if *ppi);
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int (*stop)(struct ppi_if *ppi);
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int (*set_params)(struct ppi_if *ppi, struct ppi_params *params);
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void (*update_addr)(struct ppi_if *ppi, unsigned long addr);
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};
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enum ppi_type {
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PPI_TYPE_PPI,
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PPI_TYPE_EPPI,
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PPI_TYPE_EPPI3,
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};
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struct ppi_info {
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enum ppi_type type;
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int dma_ch;
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int irq_err;
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void __iomem *base;
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const unsigned short *pin_req;
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};
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struct ppi_if {
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unsigned long ppi_control;
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const struct ppi_ops *ops;
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const struct ppi_info *info;
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bool err_int; /* if we need request error interrupt */
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bool err; /* if ppi has fifo error */
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void *priv;
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};
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struct ppi_if *ppi_create_instance(const struct ppi_info *info);
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void ppi_delete_instance(struct ppi_if *ppi);
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#endif
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