| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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 | |
| 16 | #ifndef _PPI_H_ |
| 17 | #define _PPI_H_ |
| 18 | |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <asm/blackfin.h> |
| 21 | #include <asm/bfin_ppi.h> |
| 22 | |
| 23 | /* EPPI */ |
| 24 | #ifdef EPPI_EN |
| 25 | #define PORT_EN EPPI_EN |
| 26 | #define PORT_DIR EPPI_DIR |
| 27 | #define DMA32 0 |
| 28 | #define PACK_EN PACKEN |
| 29 | #endif |
| 30 | |
| 31 | /* EPPI3 */ |
| 32 | #ifdef EPPI0_CTL2 |
| 33 | #define PORT_EN EPPI_CTL_EN |
| 34 | #define PORT_DIR EPPI_CTL_DIR |
| 35 | #define PACK_EN EPPI_CTL_PACKEN |
| 36 | #define DMA32 0 |
| 37 | #define DLEN_8 EPPI_CTL_DLEN08 |
| 38 | #define DLEN_16 EPPI_CTL_DLEN16 |
| 39 | #endif |
| 40 | |
| 41 | struct ppi_if; |
| 42 | |
| 43 | struct ppi_params { |
| 44 | u32 width; /* width in pixels */ |
| 45 | u32 height; /* height in lines */ |
| 46 | u32 hdelay; /* delay after the HSYNC in pixels */ |
| 47 | u32 vdelay; /* delay after the VSYNC in lines */ |
| 48 | u32 line; /* total pixels per line */ |
| 49 | u32 frame; /* total lines per frame */ |
| 50 | u32 hsync; /* HSYNC length in pixels */ |
| 51 | u32 vsync; /* VSYNC length in lines */ |
| 52 | int bpp; /* bits per pixel */ |
| 53 | int dlen; /* data length for ppi in bits */ |
| 54 | u32 ppi_control; /* ppi configuration */ |
| 55 | u32 int_mask; /* interrupt mask */ |
| 56 | }; |
| 57 | |
| 58 | struct ppi_ops { |
| 59 | int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler); |
| 60 | void (*detach_irq)(struct ppi_if *ppi); |
| 61 | int (*start)(struct ppi_if *ppi); |
| 62 | int (*stop)(struct ppi_if *ppi); |
| 63 | int (*set_params)(struct ppi_if *ppi, struct ppi_params *params); |
| 64 | void (*update_addr)(struct ppi_if *ppi, unsigned long addr); |
| 65 | }; |
| 66 | |
| 67 | enum ppi_type { |
| 68 | PPI_TYPE_PPI, |
| 69 | PPI_TYPE_EPPI, |
| 70 | PPI_TYPE_EPPI3, |
| 71 | }; |
| 72 | |
| 73 | struct ppi_info { |
| 74 | enum ppi_type type; |
| 75 | int dma_ch; |
| 76 | int irq_err; |
| 77 | void __iomem *base; |
| 78 | const unsigned short *pin_req; |
| 79 | }; |
| 80 | |
| 81 | struct ppi_if { |
| 82 | struct device *dev; |
| 83 | unsigned long ppi_control; |
| 84 | const struct ppi_ops *ops; |
| 85 | const struct ppi_info *info; |
| 86 | bool err_int; /* if we need request error interrupt */ |
| 87 | bool err; /* if ppi has fifo error */ |
| 88 | void *priv; |
| 89 | }; |
| 90 | |
| 91 | struct ppi_if *ppi_create_instance(struct platform_device *pdev, |
| 92 | const struct ppi_info *info); |
| 93 | void ppi_delete_instance(struct ppi_if *ppi); |
| 94 | #endif |