?? 前兩天已經調好了，主要是對davinci_platform.c的修改
?? 因為輸入輸出都為pal的制式，所以就在pal的函數中進行了修改。
??在PAL設置的函數中，修改如下：
/*
?* setting PAL mode
?*/
static void davinci_enc_set_pal(struct vid_enc_mode_info *mode_info)
{
?????? enableDigitalOutput(0); //gjx orignal : 0
?
?????? if (cpu_is_davinci_dm355()) {
????????????? dispc_reg_out(VENC_CLKCTL, 0x1);
????????????? dispc_reg_out(VENC_VIDCTL, 0);
????????????? /* DM350 Configure VDAC_CONFIG? */
????????????? davinci_writel(0x0E21A6B6, DM3XX_VDAC_CONFIG);
?????? } else if (cpu_is_davinci_dm365()) {
????????????? dispc_reg_out(VENC_VMOD,0x1043);//gjx? 1:YCC8; 0: ;4:PAL; 3:Composite output enable.Video encoder enable.
????????????? dispc_reg_out(VENC_CLKCTL, 0x11); //gjx enable digital lcd clock;orignal:0x1
????????????? dispc_reg_out(VENC_VIDCTL, 0x6000); //gjx? vclk pin output enable & vclk polarity inverse(6000)
????????????? dispc_reg_out(VENC_YCCCTL, 0x1); //gjx bt656
?
????????????? /* Set OSD clock and OSD Sync Adavance registers */
????????????? dispc_reg_out(VENC_OSDCLK0, 1); //gjx
????????????? dispc_reg_out(VENC_OSDCLK1, 2); //gjx
dispc_reg_out(VENC_VDPRO, 0x20);//xjx
????????????? davinci_writel(0x081141CF, DM3XX_VDAC_CONFIG);
?????? } else {
????????????? /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
????????????? dispc_reg_merge(VENC_VIDCTL, 0, 1 << 1);
????????????? /* Set REC656 Mode */
????????????? dispc_reg_out(VENC_YCCCTL, 0x1);
?????? }
?
?????? dispc_reg_out(VENC_SYNCCTL,0);//gjx
?
?????? if (cpu_is_davinci_dm355()) {
????????????? davinci_writel(mode_info->left_margin,
???????????????????? ?????? (DM355_OSD_REG_BASE + OSD_BASEPX));
????????????? davinci_writel(mode_info->upper_margin,
???????????????????? ?????? (DM355_OSD_REG_BASE + OSD_BASEPY));
?????? } else if (cpu_is_davinci_dm365()) {
????????????? davinci_writel(mode_info->left_margin,
???????????????????? ?????? (DM365_OSD_REG_BASE + OSD_BASEPX));
????????????? /* PAL display shows shakiness in the OSD0 when
????????????? ?* this is set to upper margin. Need to bump it
????????????? ?* by 2
????????????? ?*/
????????????? davinci_writel((mode_info->upper_margin + 2),
???????????????????? ??? ???(DM365_OSD_REG_BASE + OSD_BASEPY));
?????? } else {
????????????? davinci_writel(mode_info->left_margin,
???????????????????? ?????? (DM644X_OSD_REG_BASE + OSD_BASEPX));
????????????? davinci_writel(mode_info->upper_margin,
???????????????????? ?????? (DM644X_OSD_REG_BASE + OSD_BASEPY));
?????? }
?
?????? dispc_reg_merge(VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
?????? dispc_reg_out(VENC_DACTST, 0x0);
? ??dispc_reg_out(VENC_CMPNT, 0);
??????
}
環境變量
setenv bootargs mem=70M console=ttyS0,115200n8 root=/dev/nfs rw nfsroot=192.168.0.168:/home/gjx/workdir/filesys ip=192.168.0.3:192.168.0.168:192.168.0.1:255.255.255.0::eth0:off eth=00:40:01:2B:64:60 video=davincifb:vid0=OFF:vid1=OFF:osd0=720x576x16,4050K dm365_imp.oper_mode=0 davinci_capture.device_type=1 davinci_enc_mngr.ch0_mode=pal
這樣重新編譯內核就直接可以輸出bt656的視頻了，直接接支持BT656的LCD就顯示成功了。
