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