基于海思HI3559CV100移植IMX178

主芯片：HI3559CV100

主芯片手册：Hi3559A╱C V100 ultra-HD Mobile Camera SoC 用户指南.pdf

主芯片MPP手册：HiMPP V4_Password_Removed.pdf

SENSOR：IMX178

SENSOR手册：IMX178LQJ-C_Data_Sheet.pdf

SDK：Hi3559AV100R001C02SPC010

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IMX178的移植，主要涉及SENSOR端寄存器的配置、主芯片端VI各模块的配置，本文主要基于这两点进行移植过程的描述，其他功能模调用、PINMUX配置、驱动调用、Makefile修改等，可参考IMX334。

IMX178调试

根据SDK中的IMX334，首先拷贝sony_imx334文件夹，重命名为sony_imx178，并将所有334相关字段全部改为178

sony_imx178文件夹中主要包含imx178_cmos.c（图像质量相关）、imx178_sensor_ctl.c（寄存器配置相关），IMX178的调试主要包括I2C调试和寄存器配置，主要集中在imx178_sensor_ctl.c文件中

IMX178的I2C调试

参考IMX178手册，获取I2C Slave Address为0x34，Slave Address长度为8bit，Register Address长度为16比特，高位在前、低位在后

 

I2C写寄存器写入方式如下

int imx178_write_register(VI_PIPE ViPipe, int addr, int data)
{
    if (0 > g_fd[ViPipe])
    {
        return HI_SUCCESS;
    }

    int idx = 0;
    int ret;
    char buf[8];

    if (imx178_addr_byte == 2)
    {
        buf[idx] = (addr >> 8) & 0xff;
        idx++;
        buf[idx] = addr & 0xff;
        idx++;
    }
    else
    {
        buf[idx] = addr & 0xff;
        idx++;
    }

    if (imx178_data_byte == 2)
    {
        buf[idx] = (data >> 8) & 0xff;
        idx++;
        buf[idx] = data & 0xff;
        idx++;
    }
    else
    {
        buf[idx] = data & 0xff;
        idx++;
    }

    ret = write(g_fd[ViPipe], buf, (imx178_addr_byte + imx178_data_byte));
    if (ret < 0)
    {
        ISP_TRACE(HI_DBG_ERR, "I2C_WRITE DATA error!\n");
        return HI_FAILURE;
    }

    return HI_SUCCESS;
}

IMX178的寄存器配置

参考IMX178手册，将SENSOR配置为1080P60、12bit位宽、4通道，INCK选择27MHz模式

寄存器配置代码片段如下

void imx178_linear_1080P60_12bit_init(VI_PIPE ViPipe)
{
    /* imx178 1080@60fps */
    imx178_write_register(ViPipe, 0x3000, 0x07); /* standby */

    imx178_write_register(ViPipe, 0x300E, 0x01); /* MODE, Window cropping 5.0M (4:3) */
    imx178_write_register(ViPipe, 0x300F, 0x00); /* WINMODE, Window cropping 5.0M (4:3) */
    imx178_write_register(ViPipe, 0x3010, 0x00); /* TCYCLE */
    imx178_write_register(ViPipe, 0x3066, 0x03); /* VNDMY */
    imx178_write_register(ViPipe, 0x302C, 0x72);
    imx178_write_register(ViPipe, 0x302D, 0x06); /* VMAX */
    imx178_write_register(ViPipe, 0x302F, 0xEE);
    imx178_write_register(ViPipe, 0x3030, 0x02); /* HMAX */
    imx178_write_register(ViPipe, 0x300D, 0x05); /* ADBIT, ADBITFREQ  (ADC 12-bit) */
    imx178_write_register(ViPipe, 0x3059, 0x31); /* ODBIT, OPORTSEL   (12-BIT), 4CH */
    imx178_write_register(ViPipe, 0x3004, 0x03); /* STBLVDS, 4CH ACTIVE */

    /* register setting details */
    imx178_write_register(ViPipe, 0x3101, 0x30); /* FREQ[1:0] */

    /* FREQ setting (INCK=27MHz) */
    imx178_write_register(ViPipe, 0x310C, 0x00);
    imx178_write_register(ViPipe, 0x33BE, 0x21);
    imx178_write_register(ViPipe, 0x33BF, 0x21);
    imx178_write_register(ViPipe, 0x33C0, 0x2C);
    imx178_write_register(ViPipe, 0x33C1, 0x2C);
    imx178_write_register(ViPipe, 0x33C2, 0x21);
    imx178_write_register(ViPipe, 0x33C3, 0x2C);
    imx178_write_register(ViPipe, 0x33C4, 0x2C);
    imx178_write_register(ViPipe, 0x33C5, 0x00);
    imx178_write_register(ViPipe, 0x311C, 0x34);
    ...
}

HI3559主芯片配置

主芯片调试主要分为MIPI_Rx配置、VI配置、ISP配置

MIPI_RX配置

 查看SENSOR手册，确认SENSOR图像输出信号为LVDS

◆ Supports I/O switching 
Low voltage LVDS (150 mVp-p) serial (4 ch / 8 ch / 10 ch switching) DDR output 

查看主芯片手册，确认MIPI_Rx支持LVDS信号，将视频输入接口配置为LVDS即可

MIPI Rx 支持 MIPI D-PHY 、 LVDS （ Low-Voltage Differential Signal ）、 HiSPi （ High-Speed Serial Pixel Interface ）等串行视频信号输入，串行视频接口可以提供更高的传输带宽，增强传输的稳定性。

mpp/sample/common/sample_comm_vi.c文件中，配置MIPI_RX的combo-PHY属性为LVDS、12bit位宽、4通道、分辨率1920*1080

combo_dev_attr_t LVDS_4lane_SENSOR_IMX178_12BIT_1080p_ATTR =
{
    /* input mode */
	.devno = 0,
    .input_mode = INPUT_MODE_LVDS,
    .data_rate = MIPI_DATA_RATE_X1,
    .img_rect = {0, 0, 1920, 1080},
    {
        .lvds_attr = {
        	DATA_TYPE_RAW_12BIT,
            HI_WDR_MODE_NONE,

            LVDS_SYNC_MODE_SAV,
			.vsync_attr = {LVDS_VSYNC_NORMAL, 0, 0},
			.fid_attr = {LVDS_FID_NONE, HI_TRUE},

            LVDS_ENDIAN_BIG,
            LVDS_ENDIAN_BIG,
            .lane_id = {0, 1, 2, 3, -1, -1, -1, -1},
            .sync_code = {
                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}},

                    {{0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0},
                    {0xab0, 0xb60, 0x800, 0x9d0}}
                }
        }
    }
};

drv/interdrv/sysconfig/sys_config.c文件中，配置bus_type为I2C、配置输出给SENSOR的参考时钟为24MHz

备注：按手册将参考时钟配置为27MHz时，SENSOR输出帧率为77FPS，而参考时钟配置为24MHz时，SENSOR输出帧率为58FPS，因此配置为24MHz

static BUS_TYPE parse_sensor_bus_type(char *name)
{
    ...
    bus_type = BUS_TYPE_I2C;
    ...
    return bus_type;
}

/*
0x0: 74.25MHz; 0x1: 72MHz;0x2: 54MHz;0x3: 50MHz;0x4: 24MHz;0x6: 32.4MHz;
0x8: 37.125MHz;0x9: 36MHz;0xA: 27MHz;0xB: 25MHz;0xC: 12MHz;
*/
static int parse_sensor_clock(char *name)
{
    int clock = 0x0;
    ...
    clock = 0x4;	// 24MHZ
    ...
    return clock;
}

drv/interdrv/mipi/hi_mipi.h文件中，修改LVDS最大支持4通道

#define MAX_LANE_NUM_PER_LINK   2  /* one link has 2 lanes at most */
...
#define LVDS_LANE_NUM           (MAX_LANE_NUM_PER_LINK * 4)

VI配置

mpp/sample/common/sample_comm_vi.c中修改VI相关配置

VI DEV配置，主要配置输入接口LVDS、掩码0xFFF00000、图像格式RGB、分辨率1920*1080

VI_DEV_ATTR_S DEV_ATTR_IMX178_LVDS_BASE =
{
    /* interface mode */
    VI_MODE_LVDS,
    /* multiplex mode */
    VI_WORK_MODE_1Multiplex,
    /* r_mask    g_mask    b_mask*/
    {0xFFF00000,    0x0},
    /* progessive or interleaving */
    VI_SCAN_PROGRESSIVE,
    /*AdChnId*/
    {-1, -1, -1, -1},
    /*enDataSeq, only support yuv*/
	VI_DATA_SEQ_YUYV,

    /* synchronization information */
    {
    /*port_vsync   port_vsync_neg     port_hsync        port_hsync_neg        */
    VI_VSYNC_PULSE, VI_VSYNC_NEG_LOW, VI_HSYNC_VALID_SINGNAL,VI_HSYNC_NEG_HIGH,VI_VSYNC_VALID_SINGAL,VI_VSYNC_VALID_NEG_HIGH,

    /*hsync_hfb    hsync_act    hsync_hhb*/
    {0,            1280,        0,
    /*vsync0_vhb vsync0_act vsync0_hhb*/
     0,            720,        0,
    /*vsync1_vhb vsync1_act vsync1_hhb*/
     0,            0,            0}
    },
    /* input data type */
    VI_DATA_TYPE_RGB,
    /* bRever */
    HI_FALSE,
    {1920 , 1080},
    {
        {
            {1920 , 1080},
        },
        {
            VI_REPHASE_MODE_NONE,
            VI_REPHASE_MODE_NONE
        }
    },
    {
        WDR_MODE_NONE,
		1080
    },
    DATA_RATE_X1
};

DEV需要注意掩码的配置，根据芯片手册，12bit位宽，掩码为0xFFF00000，掩码如果配置不对，会导致VI采集失败

VI PIPE配置

VI_PIPE_ATTR_S PIPE_ATTR_1920x1080_RAW12_420_3DNR_RFR =
{
    VI_PIPE_BYPASS_NONE, HI_FALSE, HI_FALSE,
    1920, 1080,
	PIXEL_FORMAT_RGB_BAYER_12BPP,
	COMPRESS_MODE_LINE,
	DATA_BITWIDTH_12,
	HI_FALSE,
    {
    	PIXEL_FORMAT_YVU_SEMIPLANAR_420,
        DATA_BITWIDTH_10,
        VI_NR_REF_FROM_RFR,
        COMPRESS_MODE_NONE
    },
    HI_FALSE,
    { -1, -1}
};

VI CHN配置

VI_CHN_ATTR_S CHN_ATTR_1920x1080_420_SDR8_LINEAR =
{
    {1920, 1080},
	PIXEL_FORMAT_YVU_SEMIPLANAR_420,
	DYNAMIC_RANGE_SDR8,
    VIDEO_FORMAT_LINEAR,
    COMPRESS_MODE_NONE,
    0,      0,
    0,
    { -1, -1}
};

ISP配置

mpp/sample/common/sample_comm_isp.c中修改ISP相关配置

ISP_PUB_ATTR_S ISP_PUB_ATTR_IMX178_2K_60FPS =
{
    {0, 0, 1920, 1080},
    {1920, 1080},
    60,
	BAYER_GBRG,
    WDR_MODE_NONE,
    0,
};

需要注意BAYER_FORMAT，这里配置为BAYER_GBRG，如果配置不对，会导致采集到的图像颜色异常

至此，IMX178的移植相关配置已全部完成。

 

 

 

来源：CSDN

作者：YuFung1

链接：https://blog.csdn.net/mango_yang226/article/details/102566536