Nova Tek Hdmiout 小板调试总结

NovaTek HDMI out小板调试
涉及知识点：
1.Mboot 添加命令行指令”hdmiout”;
2.Mboot 添加功能宏，可配置编译；// UConfig
3.Mboot 模块I2C编程；
4.DDC/CI 协议

NovaTek out 小板大量服务于传统显示器。目前在hht 658 上面应用的作用是接入vb1信号，
然后透传输出一个vb1信号直接给屏，再输入一路HDMI信号。其小板芯片的控制是通过
DDC/CI 协议控制，配置小板的不同工作状态。

一、DDC/CI协议
ddc/ci协议是Display Data Channel Command Interface的简称，基于DDC/CI协议，用户可以通过鼠标和人性化的软件界面来完成显示器的各项设置和色彩调节，而不必使用传统的OSD菜单。

nova tek DDC/CI部分控制指令如下：
DDCCI命令有如下指令：
//HTX MODE
0x6E,0x51,0x83,0x03,0x41,0x81,0x7F // Auto
0x6E,0x51,0x83,0x03,0x41,0x82,0x7C // 4K
0x6E,0x51,0x83,0x03,0x41,0x83,0x7D // 2K
0x6E,0x51,0x83,0x03,0x41,0x84,0x7A // 720x480P

// 模式转换
0x6E,0x51,0x83,0x03,0x43,0x81,0x7D // mute
0x6E,0x51,0x83,0x03,0x43,0x82,0x7E // Normal

// 屏TCON选择
0x6E,0x51,0x83,0x03,0x42,0x91,0x6C // 2 Tcon(双屏输出)
0x6E,0x51,0x83,0x03,0x42,0x92,0x6F // 1 Tcon(单屏输出)

说明：IIC发送时0x6E为地址，0x51为寄存器，后面的为数据就可以。

二、Mboot I2C控制
1.配置I2C Bus

static SWI2C_BusCfg g_Nov_Tek_I2cBusCfg[MST658_I2C_BUS_NUM]=
{// Bus-0{PAD_DDCR_CK, PAD_DDCR_DA, 80}, //IS_SW_I2C  /SCL_PAD /SDA_PAD /Delay// Bus-1{PAD_TGPIO0 , PAD_TGPIO1 , 80},   //IS_SW_I2C  /SCL_PAD /SDA_PAD /Delay// Bus-2// Others, add other bus here
};

主要是填充一个SWI2C_BusCfg 结构体数组，{PAD_DDCR_CK, PAD_DDCR_DA, 80} 为bus-1 的clk，data, delay 三个参数。第一路总线如下：

第二路总线，如下：

2.I2C 初始化

void MDrv_Nov_Tek_SWI2C_Init(void)
{MApi_SWI2C_Init(g_Nov_Tek_I2cBusCfg, MST658_I2C_BUS_NUM);g_Nov_Tek_Init = 1;
}

MApi_SWI2C_Init 完成I2C 初始化动作。

3.I2C 读写

MS_BOOL MDrv_Nov_Tek_SWI2C_WriteBytes(MS_U16 u16BusNumSlaveID, MS_U8 u8addrnum, MS_U8* pu8addr, MS_U16 u16size, MS_U8* pu8data)
{return MApi_SWI2C_WriteBytes(u16BusNumSlaveID, u8addrnum, pu8addr, u16size, pu8data);
}MS_BOOL MDrv_Nov_Tek_SWI2C_ReadBytes(MS_U16 u16BusNumSlaveID, MS_U8 u8addrnum, MS_U8* pu8addr, MS_U16 u16size, MS_U8* pu8data)
{return MApi_SWI2C_ReadBytes(u16BusNumSlaveID, u8addrnum, pu8addr, u16size, pu8data);
}

三、Mboot 添加功能宏

endifconfig HDMIOUTbool "HDMIOUT"default yhelpSelecting this item will enable HDMI OUT.
if(HDMIOUT)
choiceprompt "Hdmi out"default NOV_TEKconfig NOV_TEKbool "NOV_TEK"default nhelpSelecting this item will enable NOV_TEK cmd.config SUO_XIbool "SUO_XI"default nhelpSelecting this item will enable SUO_XI config.
endchoiceendifconfig Mstar_IR

vendor\mstar\mboot\MBoot\u-boot-2011.06\UConfig.in 文件中添加。接着在
MBoot/sboot/configs/mooney/.config.mooney.android.142b.rom_emmc.64bit.optee.kernel文件中配置即可。

# CONFIG_CAST_CONFIG_PARTITION is not setCONFIG_HDMIOUT=y
CONFIG_NOV_TEK=y

四、Mboot 添加command指令
1.“hdmiout”指令注册

    #if (CONFIG_HDMIOUT == 1)Add_Command_Table("hdmiout_set", 0, STAGE_TOKERNEL);#endif

vendor\mstar\mboot\MBoot\MstarCustomer\MSTAR\src\MsCustomerRegister.c
2.“hdmiout”指令映射

#if (CONFIG_HDMIOUT == 1)
U_BOOT_CMD(hdmiout_set, CONFIG_SYS_MAXARGS, 1,    do_hdmiout_set,"set hdmiout","ursa_type(dec)\n"
);
#endif

MBoot/MstarCustomer/MSTAR/cmd/cmd_CusSystem.c
3.“hdmiout”指令声明

#if (CONFIG_HDMIOUT == 1)
int do_hdmiout_set( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
#endif

MBoot/MstarCustomer/MSTAR/include/CusSystem.h

4.“hdmiout”指令实现

#if (CONFIG_HDMIOUT == 1)
int do_hdmiout_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{#if (CONFIG_NOV_TEK == 1)MDrv_Nov_Tek_Set_Single_Tcon();#elseprintf("No hdmiout boards available!!!!\n");#endifreturn 0;
}#endif

MBoot/MstarCustomer/MSTAR/src/CusSystem.c

完整code如下：

// Alex.Ke (kehuanyu@cultraview.com)#ifndef __NOV_TEK_C__
#define __NOV_TEK_C__//-------------------------------------------------------------------------------------------------
//  Include files
//-------------------------------------------------------------------------------------------------
#include "nov_tek.h"//-------------------------------------------------------------------------------------------------
//  Define
//-------------------------------------------------------------------------------------------------
static MS_BOOL g_Nov_Tek_Init = FALSE;#define NOV_TEK_CMD_DATA_SUM          (sizeof(NOV_TEK_CMD_DATA) / sizeof(MS_U8))
#define NOV_TEK_I2C_ADDR              (0x6E)
#define NOV_TEK_W_REG                 (0x51)
#define MST658_I2C_BUS_NUM            (1)
#define NOV_TEK_CMD_RETRY_TIMES       (3)
#define NOV_TEK_CMD_INTERVAL_TIME     (240)
#define NOV_TEK_Delay(x)              udelay(x*1000)static SWI2C_BusCfg g_Nov_Tek_I2cBusCfg[MST658_I2C_BUS_NUM]=
{#if 0// Bus-0{PAD_DDCR_CK, PAD_DDCR_DA, 80}, //IS_SW_I2C  /SCL_PAD /SDA_PAD /Delay#endif// Bus-1{PAD_TGPIO0 , PAD_TGPIO1 , 80},   //IS_SW_I2C  /SCL_PAD /SDA_PAD /Delay// Bus-2// Others, add other bus here
};static NOV_TEK_CMD_DATA g_HTX_MODE[] =
{{0x00,0x00,0x00,0x00,0x00}, // pre init (not used){0x83,0x03,0x41,0x81,0x7F}, // Auto{0x83,0x03,0x41,0x82,0x7C}, // 4K{0x83,0x03,0x41,0x83,0x7D}, // 2K{0x83,0x03,0x41,0x84,0x7A}, // 720P{0x83,0x03,0x43,0x81,0x7D}, // mute{0x83,0x03,0x43,0x82,0x7E}, // Normal{0x83,0x03,0x42,0x91,0x6C}, // double Tcon{0x83,0x03,0x42,0x92,0x6F}, // single Tcon
};//-------------------------------------------------------------------------------------------------
//  Function define
//-------------------------------------------------------------------------------------------------
void MDrv_Nov_Tek_SWI2C_Init(void)
{MApi_SWI2C_Init(g_Nov_Tek_I2cBusCfg, MST658_I2C_BUS_NUM);g_Nov_Tek_Init = 1;
}MS_BOOL MDrv_Nov_Tek_SWI2C_WriteBytes(MS_U16 u16BusNumSlaveID, MS_U8 u8addrnum, MS_U8* pu8addr, MS_U16 u16size, MS_U8* pu8data)
{return MApi_SWI2C_WriteBytes(u16BusNumSlaveID, u8addrnum, pu8addr, u16size, pu8data);
}MS_BOOL MDrv_Nov_Tek_SWI2C_ReadBytes(MS_U16 u16BusNumSlaveID, MS_U8 u8addrnum, MS_U8* pu8addr, MS_U16 u16size, MS_U8* pu8data)
{return MApi_SWI2C_ReadBytes(u16BusNumSlaveID, u8addrnum, pu8addr, u16size, pu8data);
}MS_BOOL MDrv_Nov_Tek_SendCmd(NOV_TEK_CMD_TYPE eCmdType)
{MS_BOOL bRet = FALSE;NOV_TEK_CMD_DATA *pCmdArray = g_HTX_MODE;if(eCmdType < CMD_NOV_TEK_SET_PRE_INIT || eCmdType >= CMD_NOV_TEK_MAX){bRet = FALSE;printf("[NOVA_TEK] Can not find the command, please check!\n");}else{MS_U8 u8CmdData[NOV_TEK_CMD_DATA_SUM] = {0x00};MS_U8 u8Index = eCmdType;memcpy(u8CmdData, &pCmdArray[u8Index], sizeof(NOV_TEK_CMD_DATA));bRet  = MDrv_Nov_Tek_Write_Cmd(u8CmdData);printf("[NOVA_TEK] Send cmd index: %d, return:%d\n", eCmdType, bRet);}return bRet;
}MS_BOOL MDrv_Nov_Tek_Print_Cmd(MS_U8 *pu8CmdData)
{MS_U8 u8Index = 0;printf("[NOVA_TEK] Write cmd:");while(u8Index < NOV_TEK_CMD_DATA_SUM){printf("0x%02x, ", pu8CmdData[u8Index]);u8Index++;}printf("\r\n");return TRUE;
}MS_BOOL MDrv_Nov_Tek_Write_Cmd(MS_U8 *pu8CmdData)
{MS_U16 u16BusNumSlaveID = NOV_TEK_I2C_ADDR;MS_U8 u8SubAddr = NOV_TEK_W_REG;MS_U8 uRetryCnt = NOV_TEK_CMD_RETRY_TIMES;MS_BOOL bRet = FALSE;if(!g_Nov_Tek_Init){MDrv_Nov_Tek_SWI2C_Init();}MDrv_Nov_Tek_Print_Cmd(pu8CmdData);while(uRetryCnt--){bRet = MDrv_Nov_Tek_SWI2C_WriteBytes(u16BusNumSlaveID, 1, &u8SubAddr, NOV_TEK_CMD_DATA_SUM, pu8CmdData);NOV_TEK_Delay(NOV_TEK_CMD_INTERVAL_TIME);printf("[NOVA_TEK] uRetryCnt : %d  bRet = %d.\n", (NOV_TEK_CMD_RETRY_TIMES-uRetryCnt),bRet);if(bRet == TRUE){break;}}return bRet;
}//-------------------------------------------------------------------------------------------------
//  Member Function
//-------------------------------------------------------------------------------------------------
MS_BOOL MDrv_Nov_Tek_Set_Pre_Init(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_PRE_INIT);
}MS_BOOL MDrv_Nov_Tek_Set_Auto(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_AUTO);
}MS_BOOL MDrv_Nov_Tek_Set_4K(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_4K);
}MS_BOOL MDrv_Nov_Tek_Set_2K(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_2K);
}MS_BOOL MDrv_Nov_Tek_Set_720P(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_720P);
}MS_BOOL MDrv_Nov_Tek_Set_Mute(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_MUTE);
}MS_BOOL MDrv_Nov_Tek_Set_Normal(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_NORMAL);
}MS_BOOL MDrv_Nov_Tek_Set_Dual_Tcon(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_DUAL_TCON);
}MS_BOOL MDrv_Nov_Tek_Set_Single_Tcon(void)
{return MDrv_Nov_Tek_SendCmd(CMD_NOV_TEK_SET_SINGLE_TCON);
}#endif //__NOV_TEK_C__

备注：
如果过程中还存在播放4K，画面剪切，错位，就需要打开屏参文件的bPanel2DFreerunFlag 的参数选项。

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