MAC_VMODE_TO_VAR(9) Frame Buffer Library MAC_VMODE_TO_VAR(9)NAME
mac_vmode_to_var - converts vmode/cmode pair to var structure
int mac_vmode_to_var(int vmode, int cmode, struct fb_var_screeninfo * var);
MacOS video mode
MacOS color mode
frame buffer video mode structure
Converts a MacOS vmode/cmode pair to a frame buffer video mode structure.
Returns negative errno on error, or zero for success.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 MAC_VMODE_TO_VAR(9)
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FB_FIND_MODE(9) Frame Buffer Library FB_FIND_MODE(9)NAME
fb_find_mode - finds a valid video mode
int fb_find_mode(struct fb_var_screeninfo * var, struct fb_info * info, const char * mode_option, const struct fb_videomode * db,
unsigned int dbsize, const struct fb_videomode * default_mode, unsigned int default_bpp);
frame buffer user defined part of display
frame buffer info structure
string video mode to find
video mode database
size of db
default video mode to fall back to
default color depth in bits per pixel
Finds a suitable video mode, starting with the specified mode in mode_option with fallback to default_mode. If default_mode fails, all
modes in the video mode database will be tried.
Valid mode specifiers for mode_option:
<xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or <name>[-<bpp>][@<refresh>]
with <xres>, <yres>, <bpp> and <refresh> decimal numbers and <name> a string.
If 'M' is present after yres (and before refresh/bpp if present), the function will compute the timings using VESA(tm) Coordinated Video
Timings (CVT). If 'R' is present after 'M', will compute with reduced blanking (for flatpanels). If 'i' is present, compute interlaced
mode. If 'm' is present, add margins equal to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The char 'i' and 'm' must be after
'M' and 'R'. Example:
1024x768MR-860m - Reduced blank with margins at 60Hz.
The passed struct var is _not_ cleared! This allows you to supply values for e.g. the grayscale and accel_flags fields.
Returns zero for failure, 1 if using specified mode_option, 2 if using specified mode_option with an ignored refresh rate, 3 if default
mode is used, 4 if fall back to any valid mode.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 FB_FIND_MODE(9)
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