>>>include/media/davinci/ccdc_dm355.h - line 851: >>>static inline void ccdc_setfbaddr(unsigned long paddr){ >>> regw((paddr >> 21) & 0x007f, STADRH); >>> regw((paddr >> 5) & 0x0ffff, STADRL); >>>} >>> >>>I don't catch why should be shifted low part of the address... well, I >>>don't catch the high part as well.(shifted by 21? why?) :P
[MK] I think you are trying to debug an issue in your custom board. To explain your question, this is as per the hardware user guide for VPFE. See the description for STADRL & STADRH. STADRL Lower 16 bits of the SDRAM starting address for CCDC output The address is specified offset from the SDRAM base address in units of 32 bytes. STADRH Upper 7 bits of the SDRAM starting address for CCDC output The address is specified offset from the SDRAM base address in units of 32 bytes. So the first step is to subtract the SDRAM address from the base address. Then the offset should be specified in units of 32 byes (we already make sure the address is aligned to 32 byte boundary in VPFE capture driver. So divide the offset by 32 or shift right by 5). regw((paddr >> 5) & 0x0ffff, STADRL); >> take lower 16 bit and shift right by 5 regw((paddr >> 21) & 0x007f, STADRH); >> shift upper by 16 to get it to lower 16 bits and then shift it by additional >> 5 to get the value to be in units of 32 bytes (total shift 5 + 16 = 21) Hope this explains. If you are not seeing interrupt, make sure the sensor is providing VD signal. Also you can check arm interrupt by doing... [EMAIL PROTECTED]:/opt/lsp210# cat /proc/interrupts CPU0 0: 31686 AINTC vpfe_capture 5: 0 AINTC dm644xpreviewer 6: 0 AINTC dm644xresizer 8: 3554093 AINTC davinci_osd 12: 1 AINTC musb_hdrc 13: 245992 AINTC mac 16: 0 AINTC EDMA Completion 17: 1 AINTC EDMA CC Err 18: 0 AINTC EDMA TC0 Error 19: 0 AINTC EDMA TC1 Error 22: 8 AINTC ide0 26: 118608 AINTC davinci-mmc 32: 5930694 AINTC clockevent 33: 372 AINTC free-run counter 39: 96317 AINTC i2c_davinci 40: 15600 AINTC serial In this case vpfe_capture count (31686) should increment. >>>Thanks, bye >>>-- >>>Andrea Gasparini >>>---- ImaVis S.r.l. ---- >>>web: www.imavis.com >>> >>>_______________________________________________ >>>Davinci-linux-open-source mailing list >>>Davinci-linux-open-source@linux.davincidsp.com >>>http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source