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/linux-5.19.10/Documentation/fb/
Dsstfb.rst69 #. con2fb /dev/fbx /dev/ttyx
74 cat /proc/fb. You can find a copy of con2fb in tools/ directory.
82 #. con2fb /dev/fbx /dev/ttyx
146 - `con2fb`, maps a tty to a fbramebuffer::
148 con2fb /dev/fb1 /dev/tty5
/linux-5.19.10/drivers/video/fbdev/core/
Dfbcon.c3115 struct fb_con2fbmap con2fb; in fbcon_set_con2fb_map_ioctl() local
3118 if (copy_from_user(&con2fb, argp, sizeof(con2fb))) in fbcon_set_con2fb_map_ioctl()
3120 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) in fbcon_set_con2fb_map_ioctl()
3122 if (con2fb.framebuffer >= FB_MAX) in fbcon_set_con2fb_map_ioctl()
3124 if (!fbcon_registered_fb[con2fb.framebuffer]) in fbcon_set_con2fb_map_ioctl()
3125 request_module("fb%d", con2fb.framebuffer); in fbcon_set_con2fb_map_ioctl()
3126 if (!fbcon_registered_fb[con2fb.framebuffer]) { in fbcon_set_con2fb_map_ioctl()
3131 ret = set_con2fb_map(con2fb.console - 1, in fbcon_set_con2fb_map_ioctl()
3132 con2fb.framebuffer, 1); in fbcon_set_con2fb_map_ioctl()
3140 struct fb_con2fbmap con2fb; in fbcon_get_con2fb_map_ioctl() local
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/linux-5.19.10/drivers/staging/sm750fb/
Dreadme20 and user can use con2fb to link fbX and ttyX