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63b1a90d SJ |
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> | |
45b82596 SJ |
24 | #include <asm/blackfin.h> |
25 | #include <asm/bfin_ppi.h> | |
63b1a90d | 26 | |
45b82596 | 27 | /* EPPI */ |
63b1a90d SJ |
28 | #ifdef EPPI_EN |
29 | #define PORT_EN EPPI_EN | |
45b82596 | 30 | #define PORT_DIR EPPI_DIR |
63b1a90d SJ |
31 | #define DMA32 0 |
32 | #define PACK_EN PACKEN | |
33 | #endif | |
34 | ||
45b82596 SJ |
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 | ||
63b1a90d SJ |
45 | struct ppi_if; |
46 | ||
47 | struct ppi_params { | |
45b82596 SJ |
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 */ | |
63b1a90d SJ |
60 | }; |
61 | ||
62 | struct 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 | ||
71 | enum ppi_type { | |
72 | PPI_TYPE_PPI, | |
73 | PPI_TYPE_EPPI, | |
45b82596 | 74 | PPI_TYPE_EPPI3, |
63b1a90d SJ |
75 | }; |
76 | ||
77 | struct 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 | ||
85 | struct ppi_if { | |
0a6824bc | 86 | struct device *dev; |
63b1a90d SJ |
87 | unsigned long ppi_control; |
88 | const struct ppi_ops *ops; | |
89 | const struct ppi_info *info; | |
d78a4882 SJ |
90 | bool err_int; /* if we need request error interrupt */ |
91 | bool err; /* if ppi has fifo error */ | |
63b1a90d SJ |
92 | void *priv; |
93 | }; | |
94 | ||
f7d0e6d6 SZ |
95 | struct ppi_if *ppi_create_instance(struct platform_device *pdev, |
96 | const struct ppi_info *info); | |
63b1a90d SJ |
97 | void ppi_delete_instance(struct ppi_if *ppi); |
98 | #endif |