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