1/*
2 * Analog Devices PPI header file
3 *
4 * Copyright (c) 2011 Analog Devices Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20#ifndef _PPI_H_
21#define _PPI_H_
22
23#include <linux/interrupt.h>
24#include <asm/blackfin.h>
25#include <asm/bfin_ppi.h>
26
27/* EPPI */
28#ifdef EPPI_EN
29#define PORT_EN EPPI_EN
30#define PORT_DIR EPPI_DIR
31#define DMA32 0
32#define PACK_EN PACKEN
33#endif
34
35/* EPPI3 */
36#ifdef EPPI0_CTL2
37#define PORT_EN EPPI_CTL_EN
38#define PORT_DIR EPPI_CTL_DIR
39#define PACK_EN EPPI_CTL_PACKEN
40#define DMA32 0
41#define DLEN_8 EPPI_CTL_DLEN08
42#define DLEN_16 EPPI_CTL_DLEN16
43#endif
44
45struct ppi_if;
46
47struct ppi_params {
48	u32 width;              /* width in pixels */
49	u32 height;             /* height in lines */
50	u32 hdelay;             /* delay after the HSYNC in pixels */
51	u32 vdelay;             /* delay after the VSYNC in lines */
52	u32 line;               /* total pixels per line */
53	u32 frame;              /* total lines per frame */
54	u32 hsync;              /* HSYNC length in pixels */
55	u32 vsync;              /* VSYNC length in lines */
56	int bpp;                /* bits per pixel */
57	int dlen;               /* data length for ppi in bits */
58	u32 ppi_control;        /* ppi configuration */
59	u32 int_mask;           /* interrupt mask */
60};
61
62struct ppi_ops {
63	int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler);
64	void (*detach_irq)(struct ppi_if *ppi);
65	int (*start)(struct ppi_if *ppi);
66	int (*stop)(struct ppi_if *ppi);
67	int (*set_params)(struct ppi_if *ppi, struct ppi_params *params);
68	void (*update_addr)(struct ppi_if *ppi, unsigned long addr);
69};
70
71enum ppi_type {
72	PPI_TYPE_PPI,
73	PPI_TYPE_EPPI,
74	PPI_TYPE_EPPI3,
75};
76
77struct ppi_info {
78	enum ppi_type type;
79	int dma_ch;
80	int irq_err;
81	void __iomem *base;
82	const unsigned short *pin_req;
83};
84
85struct ppi_if {
86	struct device *dev;
87	unsigned long ppi_control;
88	const struct ppi_ops *ops;
89	const struct ppi_info *info;
90	bool err_int; /* if we need request error interrupt */
91	bool err; /* if ppi has fifo error */
92	void *priv;
93};
94
95struct ppi_if *ppi_create_instance(struct platform_device *pdev,
96			const struct ppi_info *info);
97void ppi_delete_instance(struct ppi_if *ppi);
98#endif
99