forked from Minki/linux
0a6824bc10
Multiple pinctrl states are defined for 8, 16 and 24 data pin groups in PPI peripheral. The driver should select correct group before set up further PPI parameters. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
99 lines
2.7 KiB
C
99 lines
2.7 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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struct device *dev;
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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(struct platform_device *pdev,
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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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