xref: /linux/drivers/media/platform/atmel/atmel-isi.h (revision a1c613ae4c322ddd58d5a8539dbfba2a0380a8c0)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Register definitions for the Atmel Image Sensor Interface.
4  *
5  * Copyright (C) 2011 Atmel Corporation
6  * Josh Wu, <josh.wu@atmel.com>
7  *
8  * Based on previous work by Lars Haring, <lars.haring@atmel.com>
9  * and Sedji Gaouaou
10  */
11 #ifndef __ATMEL_ISI_H__
12 #define __ATMEL_ISI_H__
13 
14 #include <linux/types.h>
15 
16 /* ISI_V2 register offsets */
17 #define ISI_CFG1				0x0000
18 #define ISI_CFG2				0x0004
19 #define ISI_PSIZE				0x0008
20 #define ISI_PDECF				0x000c
21 #define ISI_Y2R_SET0				0x0010
22 #define ISI_Y2R_SET1				0x0014
23 #define ISI_R2Y_SET0				0x0018
24 #define ISI_R2Y_SET1				0x001C
25 #define ISI_R2Y_SET2				0x0020
26 #define ISI_CTRL				0x0024
27 #define ISI_STATUS				0x0028
28 #define ISI_INTEN				0x002C
29 #define ISI_INTDIS				0x0030
30 #define ISI_INTMASK				0x0034
31 #define ISI_DMA_CHER				0x0038
32 #define ISI_DMA_CHDR				0x003C
33 #define ISI_DMA_CHSR				0x0040
34 #define ISI_DMA_P_ADDR				0x0044
35 #define ISI_DMA_P_CTRL				0x0048
36 #define ISI_DMA_P_DSCR				0x004C
37 #define ISI_DMA_C_ADDR				0x0050
38 #define ISI_DMA_C_CTRL				0x0054
39 #define ISI_DMA_C_DSCR				0x0058
40 
41 /* Bitfields in CFG1 */
42 #define ISI_CFG1_HSYNC_POL_ACTIVE_LOW		(1 << 2)
43 #define ISI_CFG1_VSYNC_POL_ACTIVE_LOW		(1 << 3)
44 #define ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING	(1 << 4)
45 #define ISI_CFG1_EMB_SYNC			(1 << 6)
46 #define ISI_CFG1_CRC_SYNC			(1 << 7)
47 /* Constants for FRATE(ISI_V2) */
48 #define		ISI_CFG1_FRATE_CAPTURE_ALL	(0 << 8)
49 #define		ISI_CFG1_FRATE_DIV_2		(1 << 8)
50 #define		ISI_CFG1_FRATE_DIV_3		(2 << 8)
51 #define		ISI_CFG1_FRATE_DIV_4		(3 << 8)
52 #define		ISI_CFG1_FRATE_DIV_5		(4 << 8)
53 #define		ISI_CFG1_FRATE_DIV_6		(5 << 8)
54 #define		ISI_CFG1_FRATE_DIV_7		(6 << 8)
55 #define		ISI_CFG1_FRATE_DIV_8		(7 << 8)
56 #define		ISI_CFG1_FRATE_DIV_MASK		(7 << 8)
57 #define ISI_CFG1_DISCR				(1 << 11)
58 #define ISI_CFG1_FULL_MODE			(1 << 12)
59 /* Definition for THMASK(ISI_V2) */
60 #define		ISI_CFG1_THMASK_BEATS_4		(0 << 13)
61 #define		ISI_CFG1_THMASK_BEATS_8		(1 << 13)
62 #define		ISI_CFG1_THMASK_BEATS_16	(2 << 13)
63 
64 /* Bitfields in CFG2 */
65 #define ISI_CFG2_GS_MODE_2_PIXEL		(0 << 11)
66 #define ISI_CFG2_GS_MODE_1_PIXEL		(1 << 11)
67 #define ISI_CFG2_GRAYSCALE			(1 << 13)
68 #define ISI_CFG2_COL_SPACE_YCbCr		(0 << 15)
69 #define ISI_CFG2_COL_SPACE_RGB			(1 << 15)
70 /* Constants for YCC_SWAP(ISI_V2) */
71 #define		ISI_CFG2_YCC_SWAP_DEFAULT	(0 << 28)
72 #define		ISI_CFG2_YCC_SWAP_MODE_1	(1 << 28)
73 #define		ISI_CFG2_YCC_SWAP_MODE_2	(2 << 28)
74 #define		ISI_CFG2_YCC_SWAP_MODE_3	(3 << 28)
75 #define		ISI_CFG2_YCC_SWAP_MODE_MASK	(3 << 28)
76 #define ISI_CFG2_IM_VSIZE_OFFSET		0
77 #define ISI_CFG2_IM_HSIZE_OFFSET		16
78 #define ISI_CFG2_IM_VSIZE_MASK		(0x7FF << ISI_CFG2_IM_VSIZE_OFFSET)
79 #define ISI_CFG2_IM_HSIZE_MASK		(0x7FF << ISI_CFG2_IM_HSIZE_OFFSET)
80 
81 /* Bitfields in PSIZE */
82 #define ISI_PSIZE_PREV_VSIZE_OFFSET	0
83 #define ISI_PSIZE_PREV_HSIZE_OFFSET	16
84 #define ISI_PSIZE_PREV_VSIZE_MASK	(0x3FF << ISI_PSIZE_PREV_VSIZE_OFFSET)
85 #define ISI_PSIZE_PREV_HSIZE_MASK	(0x3FF << ISI_PSIZE_PREV_HSIZE_OFFSET)
86 
87 /* Bitfields in PDECF */
88 #define ISI_PDECF_DEC_FACTOR_MASK	(0xFF << 0)
89 #define	ISI_PDECF_NO_SAMPLING		(16)
90 
91 /* Bitfields in CTRL */
92 /* Also using in SR(ISI_V2) */
93 #define ISI_CTRL_EN				(1 << 0)
94 #define ISI_CTRL_CDC				(1 << 8)
95 /* Also using in SR/IER/IDR/IMR(ISI_V2) */
96 #define ISI_CTRL_DIS				(1 << 1)
97 #define ISI_CTRL_SRST				(1 << 2)
98 
99 /* Bitfields in SR */
100 #define ISI_SR_SIP				(1 << 19)
101 /* Also using in SR/IER/IDR/IMR */
102 #define ISI_SR_VSYNC				(1 << 10)
103 #define ISI_SR_PXFR_DONE			(1 << 16)
104 #define ISI_SR_CXFR_DONE			(1 << 17)
105 #define ISI_SR_P_OVR				(1 << 24)
106 #define ISI_SR_C_OVR				(1 << 25)
107 #define ISI_SR_CRC_ERR				(1 << 26)
108 #define ISI_SR_FR_OVR				(1 << 27)
109 
110 /* Bitfields in DMA_C_CTRL & in DMA_P_CTRL */
111 #define ISI_DMA_CTRL_FETCH			(1 << 0)
112 #define ISI_DMA_CTRL_WB				(1 << 1)
113 #define ISI_DMA_CTRL_IEN			(1 << 2)
114 #define ISI_DMA_CTRL_DONE			(1 << 3)
115 
116 /* Bitfields in DMA_CHSR/CHER/CHDR */
117 #define ISI_DMA_CHSR_P_CH			(1 << 0)
118 #define ISI_DMA_CHSR_C_CH			(1 << 1)
119 
120 /* Definition for isi_platform_data */
121 #define ISI_DATAWIDTH_8				0x01
122 #define ISI_DATAWIDTH_10			0x02
123 
124 struct isi_platform_data {
125 	u8 has_emb_sync;
126 	u8 hsync_act_low;
127 	u8 vsync_act_low;
128 	u8 pclk_act_falling;
129 	u8 full_mode;
130 	u32 data_width_flags;
131 	/* Using for ISI_CFG1 */
132 	u32 frate;
133 };
134 
135 #endif /* __ATMEL_ISI_H__ */
136