On Wed, Nov 14, 2012 at 01:12:07PM +0100, Thierry Reding wrote:
> On Wed, Nov 14, 2012 at 12:43:20PM +0100, Steffen Trumtrar wrote:
> > Add a function to convert from the generic videomode to a fb_videomode.
> >
> > Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
> > ---
> > drivers/video/fbmon.c | 38 ++++++++++++++++++++++++++++++++++++++
> > include/linux/fb.h | 5 +++++
> > 2 files changed, 43 insertions(+)
> >
> > diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c
> > index cef6557..cccef17 100644
> > --- a/drivers/video/fbmon.c
> > +++ b/drivers/video/fbmon.c
> > @@ -31,6 +31,7 @@
> > #include <linux/pci.h>
> > #include <linux/slab.h>
> > #include <video/edid.h>
> > +#include <linux/videomode.h>
> > #ifdef CONFIG_PPC_OF
> > #include <asm/prom.h>
> > #include <asm/pci-bridge.h>
> > @@ -1373,6 +1374,43 @@ int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, struct fb_inf
> > kfree(timings);
> > return err;
> > }
> > +
> > +#if IS_ENABLED(CONFIG_VIDEOMODE)
> > +int fb_videomode_from_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;
> > + if (vm->de)
> > + fbmode->sync |= FB_SYNC_DATA_ENABLE_HIGH_ACT;
> > + fbmode->refresh = (vm->pixelclock*1000) / (vm->hactive * vm->vactive);
>
> CodingStyle that you should have spaces around '*'. Also I'm not sure if
> that formula is correct. Shouldn't the blanking intervals be counted as
> well? So:
>
> unsigned int htotal = vm->hactive + vm->hfront_porch +
> vm->hback_porch + vm->hsync_len;
> unsigned int vtotal = vm->vactive + vm->vfront_porch +
> vm->vback_porch + vm->vsync_len;
>
> fbmode->refresh = (vm->pixelclock * 1000) / (htotal * vtotal);
>
> ?
>
Sounds correct. Done.
> > + fbmode->flag = 0;
> > +
> > + return 0;
> > +}
> > +EXPORT_SYMBOL_GPL(fb_videomode_from_videomode);
> > +#endif
> > +
> > +
>
> Gratuitous blank line.
>
> > #else
> > int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)
> > {
> > diff --git a/include/linux/fb.h b/include/linux/fb.h
> > index c7a9571..6a3a675 100644
> > --- a/include/linux/fb.h
> > +++ b/include/linux/fb.h
> > @@ -14,6 +14,7 @@
> > #include <linux/backlight.h>
> > #include <linux/slab.h>
> > #include <asm/io.h>
> > +#include <linux/videomode.h>
> >
> > struct vm_area_struct;
> > struct fb_info;
> > @@ -714,6 +715,10 @@ extern void fb_destroy_modedb(struct fb_videomode *modedb);
> > extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
> > extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
> >
> > +#if IS_ENABLED(CONFIG_VIDEOMODE)
> > +extern int fb_videomode_from_videomode(struct videomode *vm,
> > + struct fb_videomode *fbmode);
> > +#endif
> > /* drivers/video/modedb.c */
>
> These in turn could use an extra blank line.
>
> Thierry
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