On Friday, January 25, 2013 6:02 PM, Steffen Trumtrar wrote
>
> Add a function to convert from the generic videomode to a fb_videomode.
>
> Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
> Reviewed-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
> Acked-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
> Tested-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
> Tested-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Tested-by: Afzal Mohammed <Afzal@xxxxxx>
> Tested-by: Rob Clark <robclark@xxxxxxxxx>
> Tested-by: Leela Krishna Amudala <leelakrishna.a@xxxxxxxxx>
> ---
> drivers/video/fbmon.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++
> include/linux/fb.h | 4 ++++
> 2 files changed, 56 insertions(+)
>
> diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c
> index cef6557..17ce135 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 <video/videomode.h>
> #ifdef CONFIG_PPC_OF
> #include <asm/prom.h>
> #include <asm/pci-bridge.h>
> @@ -1373,6 +1374,57 @@ 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(const struct videomode *vm,
> + struct fb_videomode *fbmode)
> +{
> + unsigned int htotal, vtotal;
> +
> + 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;
> +
> + /* prevent division by zero in KHZ2PICOS macro */
> + fbmode->pixclock = vm->pixelclock ?
> + KHZ2PICOS(vm->pixelclock / 1000) : 0;
> +
> + fbmode->sync = 0;
> + fbmode->vmode = 0;
> + if (vm->dmt_flags & VESA_DMT_HSYNC_HIGH)
> + fbmode->sync |= FB_SYNC_HOR_HIGH_ACT;
> + if (vm->dmt_flags & VESA_DMT_HSYNC_HIGH)
Hi Steffen Trumtrar,
Um, it seems to be a type. 'H'SYNC -> 'V'SYNC
Thus, it would be changed as below:
VESA_DMT_HSYNC_HIGH -> VESA_DMT_VSYNC_HIGH
Best regards,
Jingoo Han
> + fbmode->sync |= FB_SYNC_VERT_HIGH_ACT;
> + if (vm->data_flags & DISPLAY_FLAGS_INTERLACED)
> + fbmode->vmode |= FB_VMODE_INTERLACED;
> + if (vm->data_flags & DISPLAY_FLAGS_DOUBLESCAN)
> + fbmode->vmode |= FB_VMODE_DOUBLE;
> + fbmode->flag = 0;
> +
> + htotal = vm->hactive + vm->hfront_porch + vm->hback_porch +
> + vm->hsync_len;
> + vtotal = vm->vactive + vm->vfront_porch + vm->vback_porch +
> + vm->vsync_len;
> + /* prevent division by zero */
> + if (htotal && vtotal) {
> + fbmode->refresh = vm->pixelclock / (htotal * vtotal);
> + /* a mode must have htotal and vtotal != 0 or it is invalid */
> + } else {
> + fbmode->refresh = 0;
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(fb_videomode_from_videomode);
> +#endif
> +
> #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..100a176 100644
> --- a/include/linux/fb.h
> +++ b/include/linux/fb.h
> @@ -19,6 +19,7 @@ struct vm_area_struct;
> struct fb_info;
> struct device;
> struct file;
> +struct videomode;
>
> /* Definitions below are used in the parsed monitor specs */
> #define FB_DPMS_ACTIVE_OFF 1
> @@ -714,6 +715,9 @@ 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);
>
> +extern int fb_videomode_from_videomode(const struct videomode *vm,
> + struct fb_videomode *fbmode);
> +
> /* drivers/video/modedb.c */
> #define VESA_MODEDB_SIZE 34
> extern void fb_var_to_videomode(struct fb_videomode *mode,
> --
> 1.7.10.4
>
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