c0aa24ba89
Remove PARPORT dependency for Auxiliary Display support. This is not needed since the dependency for the KS0108 driver is PARPORT_PC. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
123 lines
3.5 KiB
Plaintext
123 lines
3.5 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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# Auxiliary display drivers configuration.
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#
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menuconfig AUXDISPLAY
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bool "Auxiliary Display support"
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---help---
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Say Y here to get to see options for auxiliary display drivers.
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and disabled.
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if AUXDISPLAY
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config KS0108
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tristate "KS0108 LCD Controller"
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depends on PARPORT_PC
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default n
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---help---
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If you have a LCD controlled by one or more KS0108
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controllers, say Y. You will need also another more specific
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driver for your LCD.
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Depends on Parallel Port support. If you say Y at
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parport, you will be able to compile this as a module (M)
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and built-in as well (Y).
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To compile this as a module, choose M here:
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the module will be called ks0108.
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If unsure, say N.
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config KS0108_PORT
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hex "Parallel port where the LCD is connected"
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depends on KS0108
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default 0x378
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---help---
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The address of the parallel port where the LCD is connected.
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The first standard parallel port address is 0x378.
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The second standard parallel port address is 0x278.
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The third standard parallel port address is 0x3BC.
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You can specify a different address if you need.
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If you don't know what I'm talking about, load the parport module,
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and execute "dmesg" or "cat /proc/ioports". You can see there how
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many parallel ports are present and which address each one has.
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Usually you only need to use 0x378.
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If you compile this as a module, you can still override this
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using the module parameters.
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config KS0108_DELAY
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int "Delay between each control writing (microseconds)"
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depends on KS0108
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default "2"
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---help---
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Amount of time the ks0108 should wait between each control write
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to the parallel port.
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If your LCD seems to miss random writings, increment this.
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If you don't know what I'm talking about, ignore it.
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If you compile this as a module, you can still override this
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value using the module parameters.
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config CFAG12864B
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tristate "CFAG12864B LCD"
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depends on X86
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depends on FB
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depends on KS0108
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select FB_SYS_FILLRECT
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select FB_SYS_COPYAREA
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select FB_SYS_IMAGEBLIT
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select FB_SYS_FOPS
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default n
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---help---
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If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series,
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say Y. You also need the ks0108 LCD Controller driver.
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For help about how to wire your LCD to the parallel port,
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check Documentation/auxdisplay/cfag12864b
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Depends on the x86 arch and the framebuffer support.
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The LCD framebuffer driver can be attached to a console.
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It will work fine. However, you can't attach it to the fbdev driver
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of the xorg server.
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To compile this as a module, choose M here:
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the modules will be called cfag12864b and cfag12864bfb.
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If unsure, say N.
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config CFAG12864B_RATE
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int "Refresh rate (hertz)"
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depends on CFAG12864B
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default "20"
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---help---
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Refresh rate of the LCD.
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As the LCD is not memory mapped, the driver has to make the work by
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software. This means you should be careful setting this value higher.
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If your CPUs are really slow or you feel the system is slowed down,
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decrease the value.
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Be careful modifying this value to a very high value:
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You can freeze the computer, or the LCD maybe can't draw as fast as you
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are requesting.
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If you don't know what I'm talking about, ignore it.
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If you compile this as a module, you can still override this
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value using the module parameters.
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endif # AUXDISPLAY
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