Hi Sascha,
On Thursday 22 November 2012 07:20:00 Sascha Hauer wrote:
On Wed, Nov 21, 2012 at 11:02:44PM +0100, Laurent Pinchart wrote:
quoted
Hi Steffen,
quoted
+
+ htotal = vm->hactive + vm->hfront_porch + vm->hback_porch +
+ vm->hsync_len;
+ vtotal = vm->vactive + vm->vfront_porch + vm->vback_porch +
+ vm->vsync_len;
+ fbmode->refresh = (vm->pixelclock * 1000) / (htotal * vtotal);
This will fail if vm->pixelclock >= ((1 << 32) / 1000). The easiest
solution is probably to use 64-bit computation.
You have displays with a pixelclock > 4GHz?
vm->pixelclock is expressed in Hz. vm->pixelclock * 1000 will thus overflow if
the clock frequency is >= ~4.3 MHz. I have displays with a clock frequency
higher than that :-)
--
Regards,
Laurent Pinchart