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/*
* Register definitions for the Atmel Image Sensor Interface.
*
* Copyright (C) 2011 Atmel Corporation
* Josh Wu, <josh.wu@atmel.com>
*
* Based on previous work by Lars Haring, <lars.haring@atmel.com>
* and Sedji Gaouaou
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ATMEL_ISI_H__
#define __ATMEL_ISI_H__
#include <linux/types.h>
/* ISI_V2 register offsets */
#define ISI_CFG1 0x0000
#define ISI_CFG2 0x0004
#define ISI_PSIZE 0x0008
#define ISI_PDECF 0x000c
#define ISI_Y2R_SET0 0x0010
#define ISI_Y2R_SET1 0x0014
#define ISI_R2Y_SET0 0x0018
#define ISI_R2Y_SET1 0x001C
#define ISI_R2Y_SET2 0x0020
#define ISI_CTRL 0x0024
#define ISI_STATUS 0x0028
#define ISI_INTEN 0x002C
#define ISI_INTDIS 0x0030
#define ISI_INTMASK 0x0034
#define ISI_DMA_CHER 0x0038
#define ISI_DMA_CHDR 0x003C
#define ISI_DMA_CHSR 0x0040
#define ISI_DMA_P_ADDR 0x0044
#define ISI_DMA_P_CTRL 0x0048
#define ISI_DMA_P_DSCR 0x004C
#define ISI_DMA_C_ADDR 0x0050
#define ISI_DMA_C_CTRL 0x0054
#define ISI_DMA_C_DSCR 0x0058
/* Bitfields in CFG1 */
#define ISI_CFG1_HSYNC_POL_ACTIVE_LOW (1 << 2)
#define ISI_CFG1_VSYNC_POL_ACTIVE_LOW (1 << 3)
#define ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING (1 << 4)
#define ISI_CFG1_EMB_SYNC (1 << 6)
#define ISI_CFG1_CRC_SYNC (1 << 7)
/* Constants for FRATE(ISI_V2) */
#define ISI_CFG1_FRATE_CAPTURE_ALL (0 << 8)
#define ISI_CFG1_FRATE_DIV_2 (1 << 8)
#define ISI_CFG1_FRATE_DIV_3 (2 << 8)
#define ISI_CFG1_FRATE_DIV_4 (3 << 8)
#define ISI_CFG1_FRATE_DIV_5 (4 << 8)
#define ISI_CFG1_FRATE_DIV_6 (5 << 8)
#define ISI_CFG1_FRATE_DIV_7 (6 << 8)
#define ISI_CFG1_FRATE_DIV_8 (7 << 8)
#define ISI_CFG1_DISCR (1 << 11)
#define ISI_CFG1_FULL_MODE (1 << 12)
/* Bitfields in CFG2 */
#define ISI_CFG2_GRAYSCALE (1 << 13)
/* Constants for YCC_SWAP(ISI_V2) */
#define ISI_CFG2_YCC_SWAP_DEFAULT (0 << 28)
#define ISI_CFG2_YCC_SWAP_MODE_1 (1 << 28)
#define ISI_CFG2_YCC_SWAP_MODE_2 (2 << 28)
#define ISI_CFG2_YCC_SWAP_MODE_3 (3 << 28)
#define ISI_CFG2_IM_VSIZE_OFFSET 0
#define ISI_CFG2_IM_HSIZE_OFFSET 16
#define ISI_CFG2_IM_VSIZE_MASK (0x7FF << ISI_CFG2_IM_VSIZE_OFFSET)
#define ISI_CFG2_IM_HSIZE_MASK (0x7FF << ISI_CFG2_IM_HSIZE_OFFSET)
/* Bitfields in CTRL */
/* Also using in SR(ISI_V2) */
#define ISI_CTRL_EN (1 << 0)
#define ISI_CTRL_CDC (1 << 8)
/* Also using in SR/IER/IDR/IMR(ISI_V2) */
#define ISI_CTRL_DIS (1 << 1)
#define ISI_CTRL_SRST (1 << 2)
/* Bitfields in SR */
#define ISI_SR_SIP (1 << 19)
/* Also using in SR/IER/IDR/IMR */
#define ISI_SR_VSYNC (1 << 10)
#define ISI_SR_PXFR_DONE (1 << 16)
#define ISI_SR_CXFR_DONE (1 << 17)
#define ISI_SR_P_OVR (1 << 24)
#define ISI_SR_C_OVR (1 << 25)
#define ISI_SR_CRC_ERR (1 << 26)
#define ISI_SR_FR_OVR (1 << 27)
/* Bitfields in DMA_C_CTRL & in DMA_P_CTRL */
#define ISI_DMA_CTRL_FETCH (1 << 0)
#define ISI_DMA_CTRL_WB (1 << 1)
#define ISI_DMA_CTRL_IEN (1 << 2)
#define ISI_DMA_CTRL_DONE (1 << 3)
/* Bitfields in DMA_CHSR/CHER/CHDR */
#define ISI_DMA_CHSR_P_CH (1 << 0)
#define ISI_DMA_CHSR_C_CH (1 << 1)
/* Definition for isi_platform_data */
#define ISI_DATAWIDTH_8 0x01
#define ISI_DATAWIDTH_10 0x02
struct isi_platform_data {
u8 has_emb_sync;
u8 emb_crc_sync;
u8 hsync_act_low;
u8 vsync_act_low;
u8 pclk_act_falling;
u8 isi_full_mode;
u32 data_width_flags;
/* Using for ISI_CFG1 */
u32 frate;
};
#endif /* __ATMEL_ISI_H__ */
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