Hi Weng, Thanks, Vaibhav Hiremath Platform Support Products Texas Instruments Inc Ph: +91-80-25099927 > -----Original Message----- > From: linux-media-owner@xxxxxxxxxxxxxxx [mailto:linux-media- > owner@xxxxxxxxxxxxxxx] On Behalf Of Weng, Wending > Sent: Tuesday, April 21, 2009 8:32 AM > To: linux-media@xxxxxxxxxxxxxxx > Subject: need help for omap3 isp-camera interface > > Hi All, > > I'm working on video image capture(omap3 isp) interface(PSP > 1.0.2), and have met many difficulties. At the camera side, the 8 > bits BT656 signal are connected to cam_d[0-7], which looks OK. The > cam_fld, cam_hs and cam_vs are also connected, At the omap3 side, I > use saMmapLoopback.c, it runs, however, it receives only HS_VS_IRQ, > but no any image data. I checked FLDSTAT(CCDC_SYN_MODE), it's never > changed. [Hiremath, Vaibhav] Depends on above description I believe you are using 8 bit interface in BT656 mode, where CAM[0-7] goes to OMAP_CAM[0-7]. You will have to check for data_shift register configuration, look into the function "omap34xxcamisp_configure_interface" where we are configuring this value. In PSP1.0.2 the configuration - ------------------------------ Interface - TVP[0-9] -> CAM[D2-D11] CCDC_SYN_MODE.INMODE[12-13] = 0x2 --> YCbCr data in 8 bit mode TVP5146 FMT1[ --> Configured to 10 bit 4:2:2 mode ISP_CNTRL.SHIFT[6-7] = 0x2 --> 4 bit shift, CamExt[13-4] -> Cam[9-0] With above configuration we are ignoring 2 LSB's from TVP5146 and processing 8bits (MSB's) coming from it. For your configuration - ---------------------- Interface - CAM_BT[7-0] --> CAM[7-0] CCDC_SYN_MODE.INMODE[12-13] = 0x2 --> YCbCr data in 8 bit mode ISP_CNTRL.SHIFT[6-7] = 0x0 --> 0 bit shift, CamExt[13-0] -> Cam[13-0] It should work. > Right now, I don't know what to check, if you can give some > suggestions, your help will be greatly appreciated. Thanks in > advance. > > Wending Weng > -- > To unsubscribe from this list: send the line "unsubscribe linux- > media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
