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