LXR linux/drivers/auxdisplay/Kconfig

   1#
   2# For a description of the syntax of this configuration file,
   3# see Documentation/kbuild/kconfig-language.txt.
   4#
   5# Auxiliary display drivers configuration.
   6#
   7
   8menuconfig AUXDISPLAY
   9        depends on PARPORT
  10        bool "Auxiliary Display support"
  11        ---help---
  12          Say Y here to get to see options for auxiliary display drivers.
  13          This option alone does not add any kernel code.
  14
  15          If you say N, all options in this submenu will be skipped and disabled.
  16
  17if AUXDISPLAY && PARPORT
  18
  19config KS0108
  20        tristate "KS0108 LCD Controller"
  21        depends on PARPORT_PC
  22        default n
  23        ---help---
  24          If you have a LCD controlled by one or more KS0108
  25          controllers, say Y. You will need also another more specific
  26          driver for your LCD.
  27
  28          Depends on Parallel Port support. If you say Y at
  29          parport, you will be able to compile this as a module (M)
  30          and built-in as well (Y).
  31
  32          To compile this as a module, choose M here:
  33          the module will be called ks0108.
  34
  35          If unsure, say N.
  36
  37config KS0108_PORT
  38        hex "Parallel port where the LCD is connected"
  39        depends on KS0108
  40        default 0x378
  41        ---help---
  42          The address of the parallel port where the LCD is connected.
  43
  44          The first  standard parallel port address is 0x378.
  45          The second standard parallel port address is 0x278.
  46          The third  standard parallel port address is 0x3BC.
  47
  48          You can specify a different address if you need.
  49
  50          If you don't know what I'm talking about, load the parport module,
  51          and execute "dmesg" or "cat /proc/ioports". You can see there how
  52          many parallel ports are present and which address each one has.
  53
  54          Usually you only need to use 0x378.
  55
  56          If you compile this as a module, you can still override this
  57          using the module parameters.
  58
  59config KS0108_DELAY
  60        int "Delay between each control writing (microseconds)"
  61        depends on KS0108
  62        default "2"
  63        ---help---
  64          Amount of time the ks0108 should wait between each control write
  65          to the parallel port.
  66
  67          If your LCD seems to miss random writings, increment this.
  68
  69          If you don't know what I'm talking about, ignore it.
  70
  71          If you compile this as a module, you can still override this
  72          value using the module parameters.
  73
  74config CFAG12864B
  75        tristate "CFAG12864B LCD"
  76        depends on X86
  77        depends on FB
  78        depends on KS0108
  79        select FB_SYS_FILLRECT
  80        select FB_SYS_COPYAREA
  81        select FB_SYS_IMAGEBLIT
  82        select FB_SYS_FOPS
  83        default n
  84        ---help---
  85          If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series,
  86          say Y. You also need the ks0108 LCD Controller driver.
  87
  88          For help about how to wire your LCD to the parallel port,
  89          check Documentation/auxdisplay/cfag12864b
  90
  91          Depends on the x86 arch and the framebuffer support.
  92
  93          The LCD framebuffer driver can be attached to a console.
  94          It will work fine. However, you can't attach it to the fbdev driver
  95          of the xorg server.
  96
  97          To compile this as a module, choose M here:
  98          the modules will be called cfag12864b and cfag12864bfb.
  99
 100          If unsure, say N.
 101
 102config CFAG12864B_RATE
 103       int "Refresh rate (hertz)"
 104        depends on CFAG12864B
 105        default "20"
 106        ---help---
 107          Refresh rate of the LCD.
 108
 109          As the LCD is not memory mapped, the driver has to make the work by
 110          software. This means you should be careful setting this value higher.
 111          If your CPUs are really slow or you feel the system is slowed down,
 112          decrease the value.
 113
 114          Be careful modifying this value to a very high value:
 115          You can freeze the computer, or the LCD maybe can't draw as fast as you
 116          are requesting.
 117
 118          If you don't know what I'm talking about, ignore it.
 119
 120          If you compile this as a module, you can still override this
 121          value using the module parameters.
 122
 123endif # AUXDISPLAY
 124