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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 | menuconfig 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 | |
16 | if AUXDISPLAY |
17 | |
18 | config KS0108 |
19 | tristate "KS0108 LCD Controller" |
20 | depends on PARPORT_PC |
21 | default n |
22 | ---help--- |
23 | If you have a LCD controlled by one or more KS0108 |
24 | controllers, say Y. You will need also another more specific |
25 | driver for your LCD. |
26 | |
27 | Depends on Parallel Port support. If you say Y at |
28 | parport, you will be able to compile this as a module (M) |
29 | and built-in as well (Y). |
30 | |
31 | To compile this as a module, choose M here: |
32 | the module will be called ks0108. |
33 | |
34 | If unsure, say N. |
35 | |
36 | config KS0108_PORT |
37 | hex "Parallel port where the LCD is connected" |
38 | depends on KS0108 |
39 | default 0x378 |
40 | ---help--- |
41 | The address of the parallel port where the LCD is connected. |
42 | |
43 | The first standard parallel port address is 0x378. |
44 | The second standard parallel port address is 0x278. |
45 | The third standard parallel port address is 0x3BC. |
46 | |
47 | You can specify a different address if you need. |
48 | |
49 | If you don't know what I'm talking about, load the parport module, |
50 | and execute "dmesg" or "cat /proc/ioports". You can see there how |
51 | many parallel ports are present and which address each one has. |
52 | |
53 | Usually you only need to use 0x378. |
54 | |
55 | If you compile this as a module, you can still override this |
56 | using the module parameters. |
57 | |
58 | config KS0108_DELAY |
59 | int "Delay between each control writing (microseconds)" |
60 | depends on KS0108 |
61 | default "2" |
62 | ---help--- |
63 | Amount of time the ks0108 should wait between each control write |
64 | to the parallel port. |
65 | |
66 | If your LCD seems to miss random writings, increment this. |
67 | |
68 | If you don't know what I'm talking about, ignore it. |
69 | |
70 | If you compile this as a module, you can still override this |
71 | value using the module parameters. |
72 | |
73 | config CFAG12864B |
74 | tristate "CFAG12864B LCD" |
75 | depends on X86 |
76 | depends on FB |
77 | depends on KS0108 |
78 | select FB_SYS_FILLRECT |
79 | select FB_SYS_COPYAREA |
80 | select FB_SYS_IMAGEBLIT |
81 | select FB_SYS_FOPS |
82 | default n |
83 | ---help--- |
84 | If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series, |
85 | say Y. You also need the ks0108 LCD Controller driver. |
86 | |
87 | For help about how to wire your LCD to the parallel port, |
88 | check Documentation/auxdisplay/cfag12864b |
89 | |
90 | Depends on the x86 arch and the framebuffer support. |
91 | |
92 | The LCD framebuffer driver can be attached to a console. |
93 | It will work fine. However, you can't attach it to the fbdev driver |
94 | of the xorg server. |
95 | |
96 | To compile this as a module, choose M here: |
97 | the modules will be called cfag12864b and cfag12864bfb. |
98 | |
99 | If unsure, say N. |
100 | |
101 | config CFAG12864B_RATE |
102 | int "Refresh rate (hertz)" |
103 | depends on CFAG12864B |
104 | default "20" |
105 | ---help--- |
106 | Refresh rate of the LCD. |
107 | |
108 | As the LCD is not memory mapped, the driver has to make the work by |
109 | software. This means you should be careful setting this value higher. |
110 | If your CPUs are really slow or you feel the system is slowed down, |
111 | decrease the value. |
112 | |
113 | Be careful modifying this value to a very high value: |
114 | You can freeze the computer, or the LCD maybe can't draw as fast as you |
115 | are requesting. |
116 | |
117 | If you don't know what I'm talking about, ignore it. |
118 | |
119 | If you compile this as a module, you can still override this |
120 | value using the module parameters. |
121 | |
122 | endif # AUXDISPLAY |
123 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9