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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 | ||
8 | menu "Auxiliary Display support" | |
9 | ||
10 | config 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 | ||
28 | config 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 | ||
50 | config 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 | ||
65 | config 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 | ||
89 | config 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. | |
109 | endmenu |