[PATCH v7 5/8] fbmon: add videomode helpers

Manjunathappa, Prakash prakash.pm at ti.com
Fri Nov 9 08:54:16 PST 2012


Hi Steffen,

On Fri, Nov 09, 2012 at 02:55:45, Steffen Trumtrar wrote:
> Hi!
> 
> On Wed, Oct 31, 2012 at 03:30:03PM +0000, Manjunathappa, Prakash wrote:
> > Hi Steffen,
> > 
> > On Wed, Oct 31, 2012 at 14:58:05, Steffen Trumtrar wrote:
> > > +#if IS_ENABLED(CONFIG_VIDEOMODE)
> > > +int videomode_to_fb_videomode(struct videomode *vm, struct fb_videomode *fbmode)
> > > +{
> > > +	fbmode->xres = vm->hactive;
> > > +	fbmode->left_margin = vm->hback_porch;
> > > +	fbmode->right_margin = vm->hfront_porch;
> > > +	fbmode->hsync_len = vm->hsync_len;
> > > +
> > > +	fbmode->yres = vm->vactive;
> > > +	fbmode->upper_margin = vm->vback_porch;
> > > +	fbmode->lower_margin = vm->vfront_porch;
> > > +	fbmode->vsync_len = vm->vsync_len;
> > > +
> > > +	fbmode->pixclock = KHZ2PICOS(vm->pixelclock / 1000);
> > > +
> > > +	fbmode->sync = 0;
> > > +	fbmode->vmode = 0;
> > > +	if (vm->hah)
> > > +		fbmode->sync |= FB_SYNC_HOR_HIGH_ACT;
> > > +	if (vm->vah)
> > > +		fbmode->sync |= FB_SYNC_VERT_HIGH_ACT;
> > > +	if (vm->interlaced)
> > > +		fbmode->vmode |= FB_VMODE_INTERLACED;
> > > +	if (vm->doublescan)
> > > +		fbmode->vmode |= FB_VMODE_DOUBLE;
> > > +
> > 
> > "pixelclk-inverted" property of the panel is not percolated fb_videomode.
> > Please let me know if I am missing something.
> > 
> 
> The next version is almost finished. Only thing I'm missing is this.
> And I actually do not know which flag would represent an inverted pixelclock
> in fb_videomode. Does anybody have any idea what I have to do here?
> 
> 	if (vm->pixelclk_pol)
> 		fbmode->sync = ???
> 
> That's as far as I have come and I don't see a flag that seems right.
> Is this even a valid property of fb_videomode?
> 

Thanks for considering it, I see IMX addresses it as proprietary FB_SYNC_ flag.
FB_SYNC_CLK_INVERT: arch/arm/plat-mxc/include/mach/mx3fb.h

Thanks,
Prakash



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