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gerrit-public.fairphone.software / kernel / msm-4.19 / eeca7a36a86db8bfc1945dd7f6f0c22a6b66b31d / . / drivers / auxdisplay / Kconfig
blob: 2e18a63ead36d735049d7297fedbc1c77b53d5db [file] [log] [blame]
Miguel Ojeda Sandonis70e84042007-02-10 01:44:32 -0800[diff] [blame]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
8menu "Auxiliary Display support"
Martin Schwidefskyeeca7a32007-05-10 15:45:56 +0200[diff] [blame^]9 depends on PARPORT
Miguel Ojeda Sandonis70e84042007-02-10 01:44:32 -0800[diff] [blame]10
11config KS0108
12 tristate "KS0108 LCD Controller"
13 depends on PARPORT_PC
14 default n
15 ---help---
16 If you have a LCD controlled by one or more KS0108
17 controllers, say Y. You will need also another more specific
18 driver for your LCD.
19
20 Depends on Parallel Port support. If you say Y at
21 parport, you will be able to compile this as a module (M)
22 and built-in as well (Y).
23
24 To compile this as a module, choose M here:
25 the module will be called ks0108.
26
27 If unsure, say N.
28
29config KS0108_PORT
30 hex "Parallel port where the LCD is connected"
31 depends on KS0108
32 default 0x378
33 ---help---
34 The address of the parallel port where the LCD is connected.
35
36 The first standard parallel port address is 0x378.
37 The second standard parallel port address is 0x278.
38 The third standard parallel port address is 0x3BC.
39
40 You can specify a different address if you need.
41
42 If you don't know what I'm talking about, load the parport module,
43 and execute "dmesg" or "cat /proc/ioports". You can see there how
44 many parallel ports are present and which address each one has.
45
46 Usually you only need to use 0x378.
47
48 If you compile this as a module, you can still override this
49 using the module parameters.
50
51config KS0108_DELAY
52 int "Delay between each control writing (microseconds)"
53 depends on KS0108
54 default "2"
55 ---help---
56 Amount of time the ks0108 should wait between each control write
57 to the parallel port.
58
59 If your driver seems to miss random writings, increment this.
60
61 If you don't know what I'm talking about, ignore it.
62
63 If you compile this as a module, you can still override this
64 value using the module parameters.
65
66config CFAG12864B
67 tristate "CFAG12864B LCD"
68 depends on X86
69 depends on FB
70 depends on KS0108
71 default n
72 ---help---
73 If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series,
74 say Y. You also need the ks0108 LCD Controller driver.
75
76 For help about how to wire your LCD to the parallel port,
77 check Documentation/auxdisplay/cfag12864b
78
79 Depends on the x86 arch and the framebuffer support.
80
81 The LCD framebuffer driver can be attached to a console.
82 It will work fine. However, you can't attach it to the fbdev driver
83 of the xorg server.
84
85 To compile this as a module, choose M here:
86 the modules will be called cfag12864b and cfag12864bfb.
87
88 If unsure, say N.
89
90config CFAG12864B_RATE
91 int "Refresh rate (hertz)"
92 depends on CFAG12864B
93 default "20"
94 ---help---
95 Refresh rate of the LCD.
96
97 As the LCD is not memory mapped, the driver has to make the work by
98 software. This means you should be careful setting this value higher.
99 If your CPUs are really slow or you feel the system is slowed down,
100 decrease the value.
101
102 Be careful modifying this value to a very high value:
103 You can freeze the computer, or the LCD maybe can't draw as fast as you
104 are requesting.
105
106 If you don't know what I'm talking about, ignore it.
107
108 If you compile this as a module, you can still override this
109 value using the module parameters.
110endmenu