tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Register definitions for the Atmel Image Sensor Interface.
3 *
4 * Copyright (C) 2011 Atmel Corporation
5 * Josh Wu, <josh.wu@atmel.com>
6 *
7 * Based on previous work by Lars Haring, <lars.haring@atmel.com>
8 * and Sedji Gaouaou
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14#ifndef __ATMEL_ISI_H__
15#define __ATMEL_ISI_H__
16
17#include <linux/types.h>
18
19/* ISI_V2 register offsets */
20#define ISI_CFG1 0x0000
21#define ISI_CFG2 0x0004
22#define ISI_PSIZE 0x0008
23#define ISI_PDECF 0x000c
24#define ISI_Y2R_SET0 0x0010
25#define ISI_Y2R_SET1 0x0014
26#define ISI_R2Y_SET0 0x0018
27#define ISI_R2Y_SET1 0x001C
28#define ISI_R2Y_SET2 0x0020
29#define ISI_CTRL 0x0024
30#define ISI_STATUS 0x0028
31#define ISI_INTEN 0x002C
32#define ISI_INTDIS 0x0030
33#define ISI_INTMASK 0x0034
34#define ISI_DMA_CHER 0x0038
35#define ISI_DMA_CHDR 0x003C
36#define ISI_DMA_CHSR 0x0040
37#define ISI_DMA_P_ADDR 0x0044
38#define ISI_DMA_P_CTRL 0x0048
39#define ISI_DMA_P_DSCR 0x004C
40#define ISI_DMA_C_ADDR 0x0050
41#define ISI_DMA_C_CTRL 0x0054
42#define ISI_DMA_C_DSCR 0x0058
43
44/* Bitfields in CFG1 */
45#define ISI_CFG1_HSYNC_POL_ACTIVE_LOW (1 << 2)
46#define ISI_CFG1_VSYNC_POL_ACTIVE_LOW (1 << 3)
47#define ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING (1 << 4)
48#define ISI_CFG1_EMB_SYNC (1 << 6)
49#define ISI_CFG1_CRC_SYNC (1 << 7)
50/* Constants for FRATE(ISI_V2) */
51#define ISI_CFG1_FRATE_CAPTURE_ALL (0 << 8)
52#define ISI_CFG1_FRATE_DIV_2 (1 << 8)
53#define ISI_CFG1_FRATE_DIV_3 (2 << 8)
54#define ISI_CFG1_FRATE_DIV_4 (3 << 8)
55#define ISI_CFG1_FRATE_DIV_5 (4 << 8)
56#define ISI_CFG1_FRATE_DIV_6 (5 << 8)
57#define ISI_CFG1_FRATE_DIV_7 (6 << 8)
58#define ISI_CFG1_FRATE_DIV_8 (7 << 8)
59#define ISI_CFG1_FRATE_DIV_MASK (7 << 8)
60#define ISI_CFG1_DISCR (1 << 11)
61#define ISI_CFG1_FULL_MODE (1 << 12)
62
63/* Bitfields in CFG2 */
64#define ISI_CFG2_GRAYSCALE (1 << 13)
65/* Constants for YCC_SWAP(ISI_V2) */
66#define ISI_CFG2_YCC_SWAP_DEFAULT (0 << 28)
67#define ISI_CFG2_YCC_SWAP_MODE_1 (1 << 28)
68#define ISI_CFG2_YCC_SWAP_MODE_2 (2 << 28)
69#define ISI_CFG2_YCC_SWAP_MODE_3 (3 << 28)
70#define ISI_CFG2_YCC_SWAP_MODE_MASK (3 << 28)
71#define ISI_CFG2_IM_VSIZE_OFFSET 0
72#define ISI_CFG2_IM_HSIZE_OFFSET 16
73#define ISI_CFG2_IM_VSIZE_MASK (0x7FF << ISI_CFG2_IM_VSIZE_OFFSET)
74#define ISI_CFG2_IM_HSIZE_MASK (0x7FF << ISI_CFG2_IM_HSIZE_OFFSET)
75
76/* Bitfields in CTRL */
77/* Also using in SR(ISI_V2) */
78#define ISI_CTRL_EN (1 << 0)
79#define ISI_CTRL_CDC (1 << 8)
80/* Also using in SR/IER/IDR/IMR(ISI_V2) */
81#define ISI_CTRL_DIS (1 << 1)
82#define ISI_CTRL_SRST (1 << 2)
83
84/* Bitfields in SR */
85#define ISI_SR_SIP (1 << 19)
86/* Also using in SR/IER/IDR/IMR */
87#define ISI_SR_VSYNC (1 << 10)
88#define ISI_SR_PXFR_DONE (1 << 16)
89#define ISI_SR_CXFR_DONE (1 << 17)
90#define ISI_SR_P_OVR (1 << 24)
91#define ISI_SR_C_OVR (1 << 25)
92#define ISI_SR_CRC_ERR (1 << 26)
93#define ISI_SR_FR_OVR (1 << 27)
94
95/* Bitfields in DMA_C_CTRL & in DMA_P_CTRL */
96#define ISI_DMA_CTRL_FETCH (1 << 0)
97#define ISI_DMA_CTRL_WB (1 << 1)
98#define ISI_DMA_CTRL_IEN (1 << 2)
99#define ISI_DMA_CTRL_DONE (1 << 3)
100
101/* Bitfields in DMA_CHSR/CHER/CHDR */
102#define ISI_DMA_CHSR_P_CH (1 << 0)
103#define ISI_DMA_CHSR_C_CH (1 << 1)
104
105/* Definition for isi_platform_data */
106#define ISI_DATAWIDTH_8 0x01
107#define ISI_DATAWIDTH_10 0x02
108
109struct v4l2_async_subdev;
110
111struct isi_platform_data {
112 u8 has_emb_sync;
113 u8 emb_crc_sync;
114 u8 hsync_act_low;
115 u8 vsync_act_low;
116 u8 pclk_act_falling;
117 u8 full_mode;
118 u32 data_width_flags;
119 /* Using for ISI_CFG1 */
120 u32 frate;
121 /* Using for ISI_MCK */
122 u32 mck_hz;
123 struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */
124 int *asd_sizes; /* 0-terminated array of asd group sizes */
125};
126
127#endif /* __ATMEL_ISI_H__ */