Hi All:
I'm having fun with my new camera project that uses the mt9p031
camera. I'm getting nice raw stills, and that's great, but every 16 or
so images I take I get a troublesome error.
CCDC won't become idle!
The message is coming from...
static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
in ...
linux-2.6.39.1/drivers/media/video/omap3isp/ispccdc.c
I printed out the return of the status of the registers on the CCDC
and found that the only bit set was the CCDC_BUSY register.
static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc)
{
struct isp_device *isp = to_isp_device(ccdc);
return omap3isp_ccdc_busy(ccdc)
| (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) &
ISPSBL_CCDC_WR_0_DATA_READY)
| (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) &
ISPSBL_CCDC_WR_0_DATA_READY)
| (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) &
ISPSBL_CCDC_WR_0_DATA_READY)
| (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) &
ISPSBL_CCDC_WR_0_DATA_READY);
}
I THINK I'm suffering from a data underflow, where the previous batch
of images did not complete, or something. Which is funny because I
almost always get a full data set if everything starts up with no
hiccup. I should add that I get this error when I start a exposure and
data ack. The error is immediate, not in the middle of an ack. In fact
the error is thrown during the yavta init sequence. During a
ioctl(STREAM_ON).
I tried to issue a isp flush to the flush bit as described on (fig
Table 12-88 ISP_CTRL) pg 1512 of the TI-OMAP manual. This froze the
whole system. I'm wondering if anyone else is running into a similar
or even the same problem and if they know of a solution, a fix, or a
workaround?
Thanks.
Andrew
--
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
