linux-imx

/*

 * ov2640 Camera Driver

 *

 * Copyright (C) 2010 Alberto Panizzo <maramaopercheseimorto@gmail.com>

 *

 * Based on ov772x, ov9640 drivers and previous non merged implementations.

 *

 * Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.

 * Copyright (C) 2006, OmniVision

 *

 * 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.

 */

​

#include <linux/init.h>

#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/clk.h>

#include <linux/slab.h>

#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/gpio/consumer.h>

#include <linux/of_gpio.h>

#include <linux/v4l2-mediabus.h>

#include <linux/videodev2.h>

​

#include <media/v4l2-device.h>

#include <media/v4l2-event.h>

#include <media/v4l2-subdev.h>

#include <media/v4l2-ctrls.h>

#include <media/v4l2-image-sizes.h>

​

#define VAL_SET(x, mask, rshift, lshift)  \

        ((((x) >> rshift) & mask) << lshift)

/*

 * DSP registers

 * register offset for BANK_SEL == BANK_SEL_DSP

 */

#define R_BYPASS    0x05 /* Bypass DSP */

#define   R_BYPASS_DSP_BYPAS    0x01 /* Bypass DSP, sensor out directly */

#define   R_BYPASS_USE_DSP      0x00 /* Use the internal DSP */

#define QS          0x44 /* Quantization Scale Factor */

#define CTRLI       0x50

#define   CTRLI_LP_DP           0x80

#define   CTRLI_ROUND           0x40

#define   CTRLI_V_DIV_SET(x)    VAL_SET(x, 0x3, 0, 3)

#define   CTRLI_H_DIV_SET(x)    VAL_SET(x, 0x3, 0, 0)

#define HSIZE       0x51 /* H_SIZE[7:0] (real/4) */

#define   HSIZE_SET(x)          VAL_SET(x, 0xFF, 2, 0)

#define VSIZE       0x52 /* V_SIZE[7:0] (real/4) */

#define   VSIZE_SET(x)          VAL_SET(x, 0xFF, 2, 0)

#define XOFFL       0x53 /* OFFSET_X[7:0] */

#define   XOFFL_SET(x)          VAL_SET(x, 0xFF, 0, 0)

#define YOFFL       0x54 /* OFFSET_Y[7:0] */

#define   YOFFL_SET(x)          VAL_SET(x, 0xFF, 0, 0)

#define VHYX        0x55 /* Offset and size completion */

#define   VHYX_VSIZE_SET(x)     VAL_SET(x, 0x1, (8+2), 7)

#define   VHYX_HSIZE_SET(x)     VAL_SET(x, 0x1, (8+2), 3)

#define   VHYX_YOFF_SET(x)      VAL_SET(x, 0x3, 8, 4)

#define   VHYX_XOFF_SET(x)      VAL_SET(x, 0x3, 8, 0)

#define DPRP        0x56

#define TEST        0x57 /* Horizontal size completion */

#define   TEST_HSIZE_SET(x)     VAL_SET(x, 0x1, (9+2), 7)

#define ZMOW        0x5A /* Zoom: Out Width  OUTW[7:0] (real/4) */

#define   ZMOW_OUTW_SET(x)      VAL_SET(x, 0xFF, 2, 0)

#define ZMOH        0x5B /* Zoom: Out Height OUTH[7:0] (real/4) */

#define   ZMOH_OUTH_SET(x)      VAL_SET(x, 0xFF, 2, 0)

#define ZMHH        0x5C /* Zoom: Speed and H&W completion */

#define   ZMHH_ZSPEED_SET(x)    VAL_SET(x, 0x0F, 0, 4)

#define   ZMHH_OUTH_SET(x)      VAL_SET(x, 0x1, (8+2), 2)

#define   ZMHH_OUTW_SET(x)      VAL_SET(x, 0x3, (8+2), 0)

#define BPADDR      0x7C /* SDE Indirect Register Access: Address */

#define BPDATA      0x7D /* SDE Indirect Register Access: Data */

#define CTRL2       0x86 /* DSP Module enable 2 */

#define   CTRL2_DCW_EN          0x20

#define   CTRL2_SDE_EN          0x10

#define   CTRL2_UV_ADJ_EN       0x08

#define   CTRL2_UV_AVG_EN       0x04

#define   CTRL2_CMX_EN          0x01

#define CTRL3       0x87 /* DSP Module enable 3 */

#define   CTRL3_BPC_EN          0x80

#define   CTRL3_WPC_EN          0x40

#define SIZEL       0x8C /* Image Size Completion */

#define   SIZEL_HSIZE8_11_SET(x) VAL_SET(x, 0x1, 11, 6)

#define   SIZEL_HSIZE8_SET(x)    VAL_SET(x, 0x7, 0, 3)

#define   SIZEL_VSIZE8_SET(x)    VAL_SET(x, 0x7, 0, 0)

#define HSIZE8      0xC0 /* Image Horizontal Size HSIZE[10:3] */

#define   HSIZE8_SET(x)         VAL_SET(x, 0xFF, 3, 0)

#define VSIZE8      0xC1 /* Image Vertical Size VSIZE[10:3] */

#define   VSIZE8_SET(x)         VAL_SET(x, 0xFF, 3, 0)

#define CTRL0       0xC2 /* DSP Module enable 0 */