image_sensor_ov7660.c

ov7670

/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
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*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. 
*
*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
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*****************************************************************************/

/*****************************************************************************
 *
 * Filename:
 * ---------
 *   image_sensor.c
 *
 * Project:
 * --------
 *   Maui_sw
 *
 * Description:
 * ------------
 *   Image sensor driver function
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
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 *============================================================================
 ****************************************************************************/
#include "drv_comm.h"
#include "IntrCtrl.h"
#include "reg_base.h"
#include "gpio_sw.h"
#include "sccb.h"
#include "isp_if.h"
#include "image_sensor_OV7660.h"
#include "camera_para.h"
#include "sensor_common.h"


extern int sprintf(char *buffer, const char *format, ... );

/* Global Valuable */
#if defined(OV7660_RAW)
SensorInfo OV7660_g_CCT_MainSensor=OV7660_OMNIVISION;
#elif defined(OV7670_RAW)
SensorInfo OV7660_g_CCT_MainSensor=OV7670_OMNIVISION;
#else
SensorInfo OV7660_g_CCT_MainSensor=OV7660_OMNIVISION;
#endif
#if defined(SENSOR_ROTATE_0)
kal_uint8  OV7660_g_CCT_FirstGrabColor=BAYER_R;
#else
kal_uint8  OV7660_g_CCT_FirstGrabColor=BAYER_Gb;
#endif
kal_uint8  OV7660_start_grab_x_offset=0, OV7660_start_grab_y_offset=0;
kal_bool   OV7660_gVGAmode=KAL_TRUE, OV7660_sensor_night_mode=KAL_FALSE, OV7660_MPEG4_encode_mode=KAL_FALSE;
kal_uint8  ov7660_normal_gain=0, OV7660_night_gain=OV7660_SENSOR_NIGHT_MODE_GAIN;
kal_uint8  OV7660_preview_pclk_division=0, OV7660_capture_pclk_division=0;
kal_uint16 OV7660_dummy_pixels=0, OV7660_dummy_lines=0, OV7660_extra_exposure_lines=0;
kal_uint16 OV7660_exposure_lines=0;
kal_uint16 ov7660_sensor_global_gain=BASEGAIN, OV7660_sensor_gain_base=0x0;
/* Debug Message, Don't Care */
kal_uint16 OV7660_sensor_frame_rate;
#ifdef OUTPUT_DEBUG_INFO
char temp_buffer[256];
#endif
/* MAX/MIN Explosure Lines Used By AE Algorithm */
kal_uint16 OV7660_MAX_EXPOSURE_LINES=(OV7660_PIXEL_CLK/OV7660_MIN_FRAME_RATE)/OV7660_VGA_PERIOD_PIXEL_NUMS;
kal_uint8  OV7660_MIN_EXPOSURE_LINES=2;
/* Parameter For Engineer mode function */
kal_uint32 OV7660_FAC_SENSOR_REG;
/* Image Sensor ID */
kal_uint16 OV7660_sensor_id=0;

#ifndef HW_SCCB

void OV7660_SCCB_send_byte(kal_uint8 send_byte)
{
	volatile signed char i;
	volatile kal_uint32 j;

	for (i=7;i>=0;i--)
	{	/* data bit 7~0 */
		if (send_byte & (1<<i))
		{
			SET_SCCB_DATA_HIGH;
		}
		else
		{
			SET_SCCB_DATA_LOW;
		}
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		SET_SCCB_CLK_HIGH;
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		SET_SCCB_CLK_LOW;
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
	}
	/* don't care bit, 9th bit */
	SET_SCCB_DATA_LOW;
	SET_SCCB_DATA_INPUT;
	SET_SCCB_CLK_HIGH;
	for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
	SET_SCCB_CLK_LOW;
	SET_SCCB_DATA_OUTPUT;
}	/* SCCB_send_byte() */

kal_uint8 OV7660_SCCB_get_byte(void)
{
	volatile signed char i;
	volatile kal_uint32 j;
	kal_uint8 get_byte=0;

	SET_SCCB_DATA_INPUT;

	for (i=7;i>=0;i--)
	{	/* data bit 7~0 */
		SET_SCCB_CLK_HIGH;
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		if (GET_SCCB_DATA_BIT)
			get_byte |= (1<<i);
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		SET_SCCB_CLK_LOW;
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
	}
	/* don't care bit, 9th bit */
	SET_SCCB_DATA_OUTPUT;
	SET_SCCB_DATA_HIGH;
	for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
	SET_SCCB_CLK_HIGH;
	for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
	SET_SCCB_CLK_LOW;

	return get_byte;
}	/* OV7660_SCCB_send_byte() */

#endif

void ov7660_write_cmos_sensor(kal_uint32 addr, kal_uint32 para)
{
	volatile kal_uint32 j;
	
	#ifdef HW_SCCB
		SET_SCCB_DATA_LENGTH(3);
		ENABLE_SCCB;
		REG_SCCB_DATA = OV76X0_WRITE_ID | SCCB_DATA_REG_ID_ADDRESS;
		REG_SCCB_DATA = addr;
		REG_SCCB_DATA = para;
		while (SCCB_IS_WRITTING) {};
	#else
		I2C_START_TRANSMISSION;
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		OV7660_SCCB_send_byte(OV7660_WRITE_ID);
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		OV7660_SCCB_send_byte(addr);
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		OV7660_SCCB_send_byte(para);
		for(j=0;j<OV7660_SENSOR_I2C_DELAY;j++);
		I2C_STOP_TRANSMISSION;
	#endif /* HW_SCCB */
}	/* ov7660_write_cmos_sensor() */

kal_uint32 ov7660_read_cmos_sensor(kal_uint32 addr)
{
	volatile kal_uint32 j;
	kal_uint8 get_byte=0;
	
	#ifdef HW_SCCB
		SET_SCCB_DATA_LENGTH(2);
		ENABLE_SCCB;
		REG_SCCB_DATA = OV76X0_WRITE_ID | SCCB_DATA_REG_ID_ADDRESS;
		REG_SCCB_DATA = addr;
		while (SCCB_IS_WRITTING) {};