[PATCH] drivers: add LCD support

[pandora-kernel.git] / drivers / auxdisplay / Kconfig

diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
new file mode 100644 (file)
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+++ b/drivers/auxdisplay/Kconfig
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+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+# Auxiliary display drivers configuration.
+#
+
+menu "Auxiliary Display support"
+
+config KS0108
+       tristate "KS0108 LCD Controller"
+       depends on PARPORT_PC
+       default n
+       ---help---
+         If you have a LCD controlled by one or more KS0108
+         controllers, say Y. You will need also another more specific
+         driver for your LCD.
+
+         Depends on Parallel Port support. If you say Y at
+         parport, you will be able to compile this as a module (M)
+         and built-in as well (Y).
+
+         To compile this as a module, choose M here:
+         the module will be called ks0108.
+
+         If unsure, say N.
+
+config KS0108_PORT
+       hex "Parallel port where the LCD is connected"
+       depends on KS0108
+       default 0x378
+       ---help---
+         The address of the parallel port where the LCD is connected.
+
+         The first  standard parallel port address is 0x378.
+         The second standard parallel port address is 0x278.
+         The third  standard parallel port address is 0x3BC.
+
+         You can specify a different address if you need.
+
+         If you don't know what I'm talking about, load the parport module,
+         and execute "dmesg" or "cat /proc/ioports". You can see there how
+         many parallel ports are present and which address each one has.
+
+         Usually you only need to use 0x378.
+
+         If you compile this as a module, you can still override this
+         using the module parameters.
+
+config KS0108_DELAY
+       int "Delay between each control writing (microseconds)"
+       depends on KS0108
+       default "2"
+       ---help---
+         Amount of time the ks0108 should wait between each control write
+         to the parallel port.
+
+         If your driver seems to miss random writings, increment this.
+
+         If you don't know what I'm talking about, ignore it.
+
+         If you compile this as a module, you can still override this
+         value using the module parameters.
+
+config CFAG12864B
+       tristate "CFAG12864B LCD"
+       depends on X86
+       depends on FB
+       depends on KS0108
+       default n
+       ---help---
+         If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series,
+         say Y. You also need the ks0108 LCD Controller driver.
+
+         For help about how to wire your LCD to the parallel port,
+         check Documentation/auxdisplay/cfag12864b
+
+         Depends on the x86 arch and the framebuffer support.
+
+         The LCD framebuffer driver can be attached to a console.
+         It will work fine. However, you can't attach it to the fbdev driver
+         of the xorg server.
+
+         To compile this as a module, choose M here:
+         the modules will be called cfag12864b and cfag12864bfb.
+
+         If unsure, say N.
+
+config CFAG12864B_RATE
+       int "Refresh rate (hertz)"
+       depends on CFAG12864B
+       default "20"
+       ---help---
+         Refresh rate of the LCD.
+
+         As the LCD is not memory mapped, the driver has to make the work by
+         software. This means you should be careful setting this value higher.
+         If your CPUs are really slow or you feel the system is slowed down,
+         decrease the value.
+
+         Be careful modifying this value to a very high value:
+         You can freeze the computer, or the LCD maybe can't draw as fast as you
+         are requesting.
+
+         If you don't know what I'm talking about, ignore it.
+
+         If you compile this as a module, you can still override this
+         value using the module parameters.
+endmenu