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 isi_platform_data {
110	u8 has_emb_sync;
111	u8 emb_crc_sync;
112	u8 hsync_act_low;
113	u8 vsync_act_low;
114	u8 pclk_act_falling;
115	u8 full_mode;
116	u32 data_width_flags;
117	/* Using for ISI_CFG1 */
118	u32 frate;
119	/* Using for ISI_MCK */
120	u32 mck_hz;
121};
122
123#endif /* __ATMEL_ISI_H__ */