Copyright notice: reproduced please specify blog address https://blog.csdn.net/jinron10/article/details/88344083
Specific methods are as follows:
1, access Metazone.bin partition in the kernel
1), opens and closes the interface definition is added in the metazone.h
kernel-3.18\include\misc\atc\metazone\metazone.h
kernel-3.18\include\misc\atc\metazone\metazone.h
///添加以下代码
/**
* @brief Initialize MetaZone API. Please call this function first before calling other functions.
*
* @param
* @param
*
*
* @return return MZ_SUCCESS if succeeds or MZ_FAILURE if failure.
*
*
* @see
* @note
**/
unsigned long MTZ_Open(unsigned int context, unsigned int accessCode, unsigned int shareMode);
/**
* @add interface for kernel space use metazone
*
* @defaule parameter 1,0,0
*
* @return
**/
bool MTZ_Close(unsigned int context);
/**
* @add interface for kernel space use metazone
*
* @defaule parameter 1,not used
*
* @return
**/
//结束添加
unsigned int MetaZone_Init(void);2), add the compilation reversing switch module
kernel-3.18\drivers\misc\autochips\Kconfig
kernel-3.18\drivers\misc\autochips\Kconfig
config ATC_TVD ####添加编译开关
bool "ATC support tvd hardware which decode analog signal"
default y
help
Used for decode analog signal in order to achieve backcar function
config ATC_TVD_META
bool "ATC support tvd read and write METAZONE.bin storage"
default y
help
Used for decode analog signal in order to achieve backcar function3) adding metazone.h path makefile AVIN module
kernel-3.18\drivers\misc\autochips\avin\Makefile、
kernel-3.18\drivers\misc\autochips\avin\Makefile
subdir-ccflags-y += -I$(srctree)/include/misc/atc/metazone/ ###添加该路径
ccflags-y += -I$(srctree)/drivers/misc/autochips/libosal/inc/4) Open ARM1 (kernel) setting switch TVD
kernel-3.18\drivers\misc\autochips\tvd\src\tvd_if.c
kernel-3.18\drivers\misc\autochips\tvd\src\tvd_driver.c
kernel-3.18\drivers\misc\autochips\tvd\src\tvd_if.c
int tvd_hw_color_process(u16 type, u16 value)
{
#ifdef MANUAL_ADJUST_BRIGHTNESS
tvd_color_process(type, value);
#endif
return TVD_SUCCESS;
}
修改成：
int tvd_hw_color_process(u16 type, u16 value)
{
tvd_color_process(type, value);
return TVD_SUCCESS;
}
kernel-3.18\drivers\misc\autochips\tvd\src\tvd_driver.c
static unsigned int g_reg07C4 = 0xFF001996;//添加代码 TVD亮度设置
static unsigned int g_reg07C8 = 0x1EBD0010;//添加代码
static unsigned int g_reg07CC = 0x15710000;//添加代码
static unsigned int g_reg07D0 = 0x000EFF00;//添加代码
void tvd_color_process(u16 type, u16 value)
{
void __iomem *base = g_tvd_context->tvd_base;
vss_printk(VSS_LOG_INFO, "enter");
switch(type) {
case Y_GAIN:
TVD_SET_FIELD(0x7C4, 0xFFFF, value);
break;
case U_COSGAIN:
TVD_SET_FIELD(0x7C8, (0xFFFF << 16), (value << 16));
break;
case U_SINGAIN:
TVD_SET_FIELD(0x7C8, 0xFFFF, value);
break;
case V_COSGAIN:
TVD_SET_FIELD(0x7CC, (0xFFFF << 16), (value << 16));
break;
case V_SINGAIN:
TVD_SET_FIELD(0x7CC, 0xFFFF, value);
break;
case Y_OFFSET:
TVD_SET_FIELD(0x7D0, (0xFF << 16), (value << 16));
break;
case U_OFFSET:
TVD_SET_FIELD(0x7D0, (0xFF << 8), (value << 8));
break;
case V_OFFSET:
TVD_SET_FIELD(0x7D0, 0XFF, value);
break;
default:
vss_printk(VSS_LOG_INFO, "the type(%d) is not supported", type);
break;
}
g_reg07C4 = TVD_READ32(0x7C4);//添加代码 TVD亮度设置
g_reg07C8 = TVD_READ32(0x7C8);//添加代码
g_reg07CC = TVD_READ32(0x7CC);//添加代码
g_reg07D0 = TVD_READ32(0x7D0);//添加代码
vss_printk(VSS_LOG_INFO, "leave");
}
void tvd_special_setting(void)
{
void __iomem *base = g_tvd_context->tvd_base;
unsigned int tvd_mode = bHwTvdMode();
TVD_SET_BIT(REG_VSRC_07, RG_VSRC_INV_AIDX);
TVD_SET_BIT(REG_CDET_00, MODE000);
TVD_CLR_BIT(REG_DFE_0E, VPRES_SEL);
/* we can not set brightness default value in order to adjust brightness by self*/
TVD_WRITE32((0x7C4), g_reg07C4);//添加代码 TVD亮度设置
TVD_WRITE32((0x7C8), g_reg07C8);//添加代码
TVD_WRITE32((0x7CC), g_reg07CC);//添加代码
TVD_WRITE32((0x7D0), g_reg07D0);//添加代码
TVD_CLR_BIT((0x488), BIT(26));
TVD_SET_BIT((0x488), BIT(27));
TVD_CLR_BIT((0x4e0), BIT(31));
TVD_CLR_BIT((0x4e4), BIT(15));
TVD_SET_FIELD((0x4e8), (0x3FF << 10), (0x100 << 10));
TVD_SET_FIELD((0x4f8), (0xc << 0), (0xc << 0));
TVD_CLR_BIT((0x5fc), BIT(10));
TVD_SET_FIELD((0x4EC), (0x3F << 17), (0xB << 17));
switch (tvd_mode) {
case AV_PAL_N:
TVD_SET_BIT((0x540), BIT(4));
break;
case AV_PAL:
TVD_SET_BIT((0x540), BIT(4));
break;
case AV_PAL_M:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_NTSC:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_SECAM:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_PAL_60:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_NTSC443:
TVD_CLR_BIT((0x540), BIT(4));
break;
default:
break;
}
}
5), in a suitable position in the code module AVIN metazone.bin Partitions
kernel-3.18\drivers\misc\autochips\avin\src\avin_mod.c
kernel-3.18\drivers\misc\autochips\avin\src\avin_mod.c
...............................
#ifdef CONFIG_ATC_TVD_META
#include "metazone.h"
#include "metazone_inter.h"
#include "metazone_ioctl.h"
#include "tvd_if.h"
#endif
...........................
#define ARM1_MATEZONE_TVD_LIGHT_INDEX 0x10000+175 //Metazone.bin分区的访问索引，基地址加偏移量
void DisplayTVDLight(void)
{
int ARM1_TVD_light = -1;
int ret = -1;
//TVD_COLOR_PROCESS_PARAMETER_T tvd_color_para;
MTZ_Open(1,0,0);//打开metazone.bin分区
MetaZone_Read(ARM1_MATEZONE_TVD_LIGHT_INDEX,&ARM1_TVD_light); //从索引地址读取数据
vss_printk(VSS_LOG_ERR,"[ARM1] DisplayTVDLight TVD_light = %d\n",ARM1_TVD_light);
//ret=tvd_hw_color_process(Y_GAIN, 0x1000);
ret=tvd_hw_color_process(0, ARM1_TVD_light); //将TVD显示的亮度设置到寄存器中
if(TVD_SUCCESS==ret){
vss_printk(VSS_LOG_ERR,"tvd_hw_color_process excuted success.zhaojr");
}
MTZ_Close(1);
}
/**
* avin_start_streaming : Starts the DMA engine for streaming
* @vb: ptr to vb2_buffer
* @count: number of buffers
*/
static int avin_start_streaming(struct vb2_queue *vq, unsigned int count)
{
int ret = 0;
vss_printk(VSS_LOG_INFO, "enter and version is %s\n", AVIN_VERSION);
backcar_tvd_init();
#ifdef CONFIG_ATC_TVD_META
DisplayTVDLight(); //在TVD开始显示之前将TVD的亮度设置成metazone.bin文件中设置的固定值，默认是0x1000(范围是:0-65535)
#endif
backcar_tvd_start();
backcar_state = true;
vss_printk(VSS_LOG_INFO, "leave\n");
return ret;
}
2, access metazone.bin partition in ARM2
1) Open the debug interface luminance TVD
vendor\autochips\proprietary\arm2\tvd\src\tvd_if.c
vendor\autochips\proprietary\arm2\tvd\src\tvd_driver.c
vendor\autochips\proprietary\arm2\tvd\src\tvd_if.c
int tvd_hw_color_process(u16 type, u16 value)
{
#ifdef MANUAL_ADJUST_BRIGHTNESS
tvd_color_process(type, value);
#endif
return TVD_SUCCESS;
}
修改成:
int tvd_hw_color_process(u16 type, u16 value)
{
tvd_color_process(type, value);
return TVD_SUCCESS;
}
vendor\autochips\proprietary\arm2\tvd\src\tvd_driver.c
tatic unsigned int g_reg07C4 = 0xFF001996; //添加代码 //TVD亮度
static unsigned int g_reg07C8 = 0x1EBD0010;//添加代码
static unsigned int g_reg07CC = 0x15710000;//添加代码
static unsigned int g_reg07D0 = 0x000EFF00;//添加代码
void tvd_color_process(u16 type, u16 value)
{
u32 base = TVD_BASE_ADDRESS;
TVD_LOG(TVD_INFO, "tvd_color_process enter\n");
switch(type) {
case Y_GAIN:
TVD_SET_FIELD(0x7C4, 0xFFFF, value);
break;
case U_COSGAIN:
TVD_SET_FIELD(0x7C8, (0xFFFF << 16), (value << 16));
break;
case U_SINGAIN:
TVD_SET_FIELD(0x7C8, 0xFFFF, value);
break;
case V_COSGAIN:
TVD_SET_FIELD(0x7CC, (0xFFFF << 16), (value << 16));
break;
case V_SINGAIN:
TVD_SET_FIELD(0x7CC, 0xFFFF, value);
break;
case Y_OFFSET:
TVD_SET_FIELD(0x7D0, (0xFF << 16), (value << 16));
break;
case U_OFFSET:
TVD_SET_FIELD(0x7D0, (0xFF << 8), (value << 8));
break;
case V_OFFSET:
TVD_SET_FIELD(0x7D0, 0XFF, value);
break;
default:
TVD_LOG(TVD_INFO, "the type(%d) is not supported", type);
break;
}
g_reg07C4 = TVD_READ32(0x7C4); //添加代码 //TVD亮度
g_reg07C8 = TVD_READ32(0x7C8); //添加代码
g_reg07CC = TVD_READ32(0x7CC); //添加代码
g_reg07D0 = TVD_READ32(0x7D0); //添加代码
TVD_LOG(TVD_INFO, "tvd_color_process leave\n");
}
void tvd_special_setting(void)
{
u32 base = TVD_BASE_ADDRESS;
unsigned int tvd_mode = bHwTvdMode();
TVD_SET_BIT(REG_VSRC_07, RG_VSRC_INV_AIDX);
TVD_SET_BIT(REG_CDET_00, MODE000);
TVD_CLR_BIT(REG_DFE_0E, VPRES_SEL);
/* we can not set brightness default value in order to adjust brightness by self*/
TVD_WRITE32((0x7C4), g_reg07C4); //添加代码 //TVD亮度
TVD_WRITE32((0x7C8), g_reg07C8); //添加代码
TVD_WRITE32((0x7CC), g_reg07CC); //添加代码
TVD_WRITE32((0x7D0), g_reg07D0); //添加代码
TVD_CLR_BIT((0x488), BIT(26));
TVD_SET_BIT((0x488), BIT(27));
TVD_CLR_BIT((0x4e0), BIT(31));
TVD_CLR_BIT((0x4e4), BIT(15));
TVD_SET_FIELD((0x4e8), (0x3FF << 10), (0x100 << 10));
TVD_SET_FIELD((0x4f8), (0xc << 0), (0xc << 0));
TVD_CLR_BIT((0x5fc), BIT(10));
TVD_SET_FIELD((0x4EC), (0x3F << 17), (0xB << 17));
switch (tvd_mode) {
case AV_PAL_N:
TVD_SET_BIT((0x540), BIT(4));
break;
case AV_PAL:
TVD_SET_BIT((0x540), BIT(4));
break;
case AV_PAL_M:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_NTSC:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_SECAM:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_PAL_60:
TVD_CLR_BIT((0x540), BIT(4));
break;
case AV_NTSC443:
TVD_CLR_BIT((0x540), BIT(4));
break;
default:
break;
}
}2, increasing the brightness TVD TVD module is adjusted by reading Metazone.bin
vendor\autochips\proprietary\arm2\backcar\AC8227L_BCLib_stubs.c
添加编译开关
vendor\autochips\proprietary\arm2\backcar\Makefile
#modify by [email protected] ##增加以下行
LOCAL_CFLAG += -DADAPTER_ARM1_TVD_light=1
在TVD开始显示视频之前将TVD亮度调整到metazone.bin中的固定值
vendor\autochips\proprietary\arm2\backcar\AC8227L_BCLib_stubs.c
#if ADAPTER_ARM1_TVD_light
#define MATEZONE_TVD_LIGHT_INDEX 0x10000+175 //metazone.bin中索引地址
void DisplayTVDLight(void)
{
int TVD_light = -1;
int ret = -1;
_MetaZone_Read(MATEZONE_TVD_LIGHT_INDEX,&TVD_light);//从metazone.bin中索引地址读取值
Printf("[ARM2] DisplayTVDLight TVD_light = %d\n",TVD_light);
//ret=tvd_hw_color_process(Y_GAIN, 0x1000);
ret=tvd_hw_color_process(Y_GAIN, TVD_light); //设置到TVD寄存器中
if(TVD_SUCCESS==ret){
BC_INFO("tvd_hw_color_process excuted success.zhaojr");
}
}
#endif
int bc_bufferflow_start()
{
int ret = -1;
//in BCReleaseResource we need this variable to ensure no more buffers are enqued to following modules.
g_fFrameHandleStop = FALSE;
tvd_first_frame_ready = FALSE;
nr_first_frame_ready = FALSE;
di_first_frame_ready = FALSE;
#ifdef TVD_READY
TVD_COLOR_PROCESS_PARAMETER_T tvd_color_process_parameter = {0,};
unsigned int starttime = 0;
BC_INFO("bc_bufferflow_start ++, at TickCount (%d)",GetARM2TickCount());
starttime = GetARM2TickCount();
BC_INFO("bc_bufferflow_start time = (%d)", starttime);
// tvd init
ret = tvd_hw_init();
if (TVD_SUCCESS != ret) {
BC_ERROR("tvd_hw_init Fail: ret value (%d)",ret);
return -1;
}
#if ADAPTER_ARM1_TVD_light
DisplayTVDLight(); //在tvd_hw_start之前将metazone.bin中的参数设置到TVD寄存器中，默认值是0x1000,范围0-65535
#endif
//tvd_callback_register
tvd_callback_register(on_tvd_frame_handle,on_tvd_signal_handle);
//tvd_hw_config
//optional
ret = tvd_hw_start();
if (TVD_SUCCESS != ret) {
BC_ERROR("tvd_hw_start Fail: ret value (%d)",ret);
goto _deinit_tvd;
}
#endif
BC_INFO("bc_bufferflow_start --, at TickCount (%d)",GetARM2TickCount());
return 0;
_deinit_tvd:
#ifdef TVD_READY
tvd_hw_deinit();
#endif
return -1;
}3, the upper APP can read and write metazone.bin interfaces can be realized, while access to the following interfaces directly write register
1) direct write register
2, read and write interfaces metazone.bin
按照以下接口函数访问meta分区即可
import android.util.Log;
import com.autochips.metazone.AtcMetazone;
/**
* Created by wehao on 18-5-23.
*/
public class MetaZoneUtils {
private static final String TAG = "MetaZoneUtils";
public final static String KEY_BACK_LIGHT = "key_back_light";
public final static String KEY_BRIGHTNESS = "key_brightness";
public final static String KEY_CONTRAST = "key_contrast";
public final static String KEY_HUE = "key_hue";
public final static String KEY_SATURATION = "key_saturation";
private static MetaZoneUtils mInst;
private AtcMetazone mMetaZone = new AtcMetazone();
public static MetaZoneUtils getInst() {
if (mInst == null) {
mInst = new MetaZoneUtils();
}
return mInst;
}
private MetaZoneUtils() {}
/**
* 读取metazone分区特定index的值
* @param index
* @return
*/
public int readValue(int index) {
int []data = new int[1];
mMetaZone.readval(index, data);
return data[0];
}
/**
* 根据key,获取value
* @param key
* @return
*/
public int readValue(String key) {
int index = getIndex(key);
return readValue(index);
}
/**
* 向metazone分区特定index写值
* @param index
* @param data
* @return
*/
public boolean writeValue(int index, int data) {
boolean flush_flag = true;
if (index >= 0x10000 + 0xa0 && index <= 0x10000 + 0xa4) {
Log.d(TAG, "writeValue: " + data + " index: " + index);
mMetaZone.writeval(index, data);
mMetaZone.flush(flush_flag);
} else {
Log.d(TAG, "writeValue index out of range " + index);
}
Log.d(TAG, "writeValue flush_flag" + flush_flag);
return flush_flag;
}
/**
* 根据key获取相应的index,然后想metazone写值
* @param key
* @param data
* @return
*/
public boolean writeValue(String key, int data) {
int index = getIndex(key);
return writeValue(index, data);
}
/**
* 根据key值获取相应index
* @param key
* @return
*/
private int getIndex(String key) {
int ret = -1;
switch (key) {
case KEY_BACK_LIGHT: {
ret = 0x10000 + 0xa0;
break;
}
case KEY_BRIGHTNESS: {
ret = 0x10000 + 0xa1;
break;
}
case KEY_CONTRAST: {
ret = 0x10000 + 0xa2;
break;
}
case KEY_HUE: {
ret = 0x10000 + 0xa3;
break;
}
case KEY_SATURATION: {
ret = 0x10000 + 0xa4;
break;
}
}
return ret;
}
}After the upper APP write metazone partition, then reboot the system effective