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