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 bool "Auxiliary Display support" 10 ---help--- 11 Say Y here to get to see options for auxiliary display drivers. 12 This option alone does not add any kernel code. 13 14 If you say N, all options in this submenu will be skipped and disabled. 15 16config CHARLCD 17 tristate "Character LCD core support" if COMPILE_TEST 18 19if AUXDISPLAY 20 21config HD44780 22 tristate "HD44780 Character LCD support" 23 depends on GPIOLIB || COMPILE_TEST 24 select CHARLCD 25 ---help--- 26 Enable support for Character LCDs using a HD44780 controller. 27 The LCD is accessible through the /dev/lcd char device (10, 156). 28 This code can either be compiled as a module, or linked into the 29 kernel and started at boot. 30 If you don't understand what all this is about, say N. 31 32config KS0108 33 tristate "KS0108 LCD Controller" 34 depends on PARPORT_PC 35 default n 36 ---help--- 37 If you have a LCD controlled by one or more KS0108 38 controllers, say Y. You will need also another more specific 39 driver for your LCD. 40 41 Depends on Parallel Port support. If you say Y at 42 parport, you will be able to compile this as a module (M) 43 and built-in as well (Y). 44 45 To compile this as a module, choose M here: 46 the module will be called ks0108. 47 48 If unsure, say N. 49 50config KS0108_PORT 51 hex "Parallel port where the LCD is connected" 52 depends on KS0108 53 default 0x378 54 ---help--- 55 The address of the parallel port where the LCD is connected. 56 57 The first standard parallel port address is 0x378. 58 The second standard parallel port address is 0x278. 59 The third standard parallel port address is 0x3BC. 60 61 You can specify a different address if you need. 62 63 If you don't know what I'm talking about, load the parport module, 64 and execute "dmesg" or "cat /proc/ioports". You can see there how 65 many parallel ports are present and which address each one has. 66 67 Usually you only need to use 0x378. 68 69 If you compile this as a module, you can still override this 70 using the module parameters. 71 72config KS0108_DELAY 73 int "Delay between each control writing (microseconds)" 74 depends on KS0108 75 default "2" 76 ---help--- 77 Amount of time the ks0108 should wait between each control write 78 to the parallel port. 79 80 If your LCD seems to miss random writings, increment this. 81 82 If you don't know what I'm talking about, ignore it. 83 84 If you compile this as a module, you can still override this 85 value using the module parameters. 86 87config CFAG12864B 88 tristate "CFAG12864B LCD" 89 depends on X86 90 depends on FB 91 depends on KS0108 92 select FB_SYS_FILLRECT 93 select FB_SYS_COPYAREA 94 select FB_SYS_IMAGEBLIT 95 select FB_SYS_FOPS 96 default n 97 ---help--- 98 If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series, 99 say Y. You also need the ks0108 LCD Controller driver. 100 101 For help about how to wire your LCD to the parallel port, 102 check Documentation/auxdisplay/cfag12864b 103 104 Depends on the x86 arch and the framebuffer support. 105 106 The LCD framebuffer driver can be attached to a console. 107 It will work fine. However, you can't attach it to the fbdev driver 108 of the xorg server. 109 110 To compile this as a module, choose M here: 111 the modules will be called cfag12864b and cfag12864bfb. 112 113 If unsure, say N. 114 115config CFAG12864B_RATE 116 int "Refresh rate (hertz)" 117 depends on CFAG12864B 118 default "20" 119 ---help--- 120 Refresh rate of the LCD. 121 122 As the LCD is not memory mapped, the driver has to make the work by 123 software. This means you should be careful setting this value higher. 124 If your CPUs are really slow or you feel the system is slowed down, 125 decrease the value. 126 127 Be careful modifying this value to a very high value: 128 You can freeze the computer, or the LCD maybe can't draw as fast as you 129 are requesting. 130 131 If you don't know what I'm talking about, ignore it. 132 133 If you compile this as a module, you can still override this 134 value using the module parameters. 135 136config IMG_ASCII_LCD 137 tristate "Imagination Technologies ASCII LCD Display" 138 default y if MIPS_MALTA || MIPS_SEAD3 139 select SYSCON 140 help 141 Enable this to support the simple ASCII LCD displays found on 142 development boards such as the MIPS Boston, MIPS Malta & MIPS SEAD3 143 from Imagination Technologies. 144 145config HT16K33 146 tristate "Holtek Ht16K33 LED controller with keyscan" 147 depends on FB && OF && I2C && INPUT 148 select FB_SYS_FOPS 149 select FB_SYS_FILLRECT 150 select FB_SYS_COPYAREA 151 select FB_SYS_IMAGEBLIT 152 select INPUT_MATRIXKMAP 153 select FB_BACKLIGHT 154 help 155 Say yes here to add support for Holtek HT16K33, RAM mapping 16*8 156 LED controller driver with keyscan. 157 158endif # AUXDISPLAY 159