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The device property API allows drivers to gather device resources from different sources, such as ACPI, and lift the dependency on Device Tree. Convert the driver to unleash the power of the device property API. Suggested-by: Marek Behún <kabel@kernel.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Robin van der Gracht <robin@protonic.nl> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
520 lines
18 KiB
Plaintext
520 lines
18 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.rst.
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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 CHARLCD
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tristate "Character LCD core support" if COMPILE_TEST
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help
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This is the base system for character-based LCD displays.
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It makes no sense to have this alone, you select your display driver
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and if it needs the charlcd core, it will select it automatically.
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This is some character LCD core interface that multiple drivers can
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use.
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config LINEDISP
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tristate "Character line display core support" if COMPILE_TEST
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help
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This is the core support for single-line character displays, to be
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selected by drivers that use it.
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config HD44780_COMMON
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tristate "Common functions for HD44780 (and compatibles) LCD displays" if COMPILE_TEST
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select CHARLCD
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help
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This is a module with the common symbols for HD44780 (and compatibles)
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displays. This is the code that multiple other modules use. It is not
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useful alone. If you have some sort of HD44780 compatible display,
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you very likely use this. It is selected automatically by selecting
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your concrete display.
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config HD44780
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tristate "HD44780 Character LCD support"
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depends on GPIOLIB || COMPILE_TEST
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select HD44780_COMMON
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help
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Enable support for Character LCDs using a HD44780 controller.
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The LCD is accessible through the /dev/lcd char device (10, 156).
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This code can either be compiled as a module, or linked into the
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kernel and started at boot.
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If you don't understand what all this is about, say N.
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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/admin-guide/auxdisplay/cfag12864b.rst
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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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config IMG_ASCII_LCD
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tristate "Imagination Technologies ASCII LCD Display"
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depends on HAS_IOMEM
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default y if MIPS_MALTA
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select MFD_SYSCON
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select LINEDISP
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help
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Enable this to support the simple ASCII LCD displays found on
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development boards such as the MIPS Boston, MIPS Malta & MIPS SEAD3
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from Imagination Technologies.
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config HT16K33
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tristate "Holtek Ht16K33 LED controller with keyscan"
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depends on FB && I2C && INPUT
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select FB_SYS_FOPS
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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 INPUT_MATRIXKMAP
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select FB_BACKLIGHT
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select NEW_LEDS
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select LEDS_CLASS
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select LINEDISP
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help
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Say yes here to add support for Holtek HT16K33, RAM mapping 16*8
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LED controller driver with keyscan.
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config LCD2S
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tristate "lcd2s 20x4 character display over I2C console"
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depends on I2C
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select CHARLCD
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help
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This is a driver that lets you use the lcd2s 20x4 character display
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from Modtronix engineering as a console output device. The display
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is a simple single color character display. You have to connect it
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to an I2C bus.
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config ARM_CHARLCD
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bool "ARM Ltd. Character LCD Driver"
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depends on PLAT_VERSATILE
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help
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This is a driver for the character LCD found on the ARM Ltd.
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Versatile and RealView Platform Baseboards. It doesn't do
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very much more than display the text "ARM Linux" on the first
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line and the Linux version on the second line, but that's
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still useful.
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menuconfig PARPORT_PANEL
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tristate "Parallel port LCD/Keypad Panel support"
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depends on PARPORT
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select HD44780_COMMON
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help
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Say Y here if you have an HD44780 or KS-0074 LCD connected to your
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parallel port. This driver also features 4 and 6-key keypads. The LCD
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is accessible through the /dev/lcd char device (10, 156), and the
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keypad through /dev/keypad (10, 185). This code can either be
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compiled as a module, or linked into the kernel and started at boot.
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If you don't understand what all this is about, say N.
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if PARPORT_PANEL
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config PANEL_PARPORT
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int "Default parallel port number (0=LPT1)"
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range 0 255
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default "0"
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help
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This is the index of the parallel port the panel is connected to. One
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driver instance only supports one parallel port, so if your keypad
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and LCD are connected to two separate ports, you have to start two
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modules with different arguments. Numbering starts with '0' for LPT1,
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and so on.
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config PANEL_PROFILE
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int "Default panel profile (0-5, 0=custom)"
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range 0 5
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default "5"
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help
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To ease configuration, the driver supports different configuration
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profiles for past and recent wirings. These profiles can also be
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used to define an approximative configuration, completed by a few
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other options. Here are the profiles :
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0 = custom (see further)
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1 = 2x16 parallel LCD, old keypad
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2 = 2x16 serial LCD (KS-0074), new keypad
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3 = 2x16 parallel LCD (Hantronix), no keypad
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4 = 2x16 parallel LCD (Nexcom NSA1045) with Nexcom's keypad
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5 = 2x40 parallel LCD (old one), with old keypad
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Custom configurations allow you to define how your display is
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wired to the parallel port, and how it works. This is only intended
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for experts.
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config PANEL_KEYPAD
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depends on PANEL_PROFILE="0"
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int "Keypad type (0=none, 1=old 6 keys, 2=new 6 keys, 3=Nexcom 4 keys)"
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range 0 3
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default 0
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help
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This enables and configures a keypad connected to the parallel port.
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The keys will be read from character device 10,185. Valid values are :
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0 : do not enable this driver
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1 : old 6 keys keypad
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2 : new 6 keys keypad, as used on the server at www.ant-computing.com
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3 : Nexcom NSA1045's 4 keys keypad
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New profiles can be described in the driver source. The driver also
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supports simultaneous keys pressed when the keypad supports them.
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config PANEL_LCD
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depends on PANEL_PROFILE="0"
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int "LCD type (0=none, 1=custom, 2=old //, 3=ks0074, 4=hantronix, 5=Nexcom)"
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range 0 5
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default 0
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help
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This enables and configures an LCD connected to the parallel port.
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The driver includes an interpreter for escape codes starting with
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'\e[L' which are specific to the LCD, and a few ANSI codes. The
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driver will be registered as character device 10,156, usually
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under the name '/dev/lcd'. There are a total of 6 supported types :
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0 : do not enable the driver
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1 : custom configuration and wiring (see further)
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2 : 2x16 & 2x40 parallel LCD (old wiring)
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3 : 2x16 serial LCD (KS-0074 based)
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4 : 2x16 parallel LCD (Hantronix wiring)
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5 : 2x16 parallel LCD (Nexcom wiring)
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When type '1' is specified, other options will appear to configure
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more precise aspects (wiring, dimensions, protocol, ...). Please note
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that those values changed from the 2.4 driver for better consistency.
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config PANEL_LCD_HEIGHT
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "Number of lines on the LCD (1-2)"
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range 1 2
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default 2
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help
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This is the number of visible character lines on the LCD in custom profile.
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It can either be 1 or 2.
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config PANEL_LCD_WIDTH
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "Number of characters per line on the LCD (1-40)"
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range 1 40
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default 40
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help
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This is the number of characters per line on the LCD in custom profile.
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Common values are 16,20,24,40.
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config PANEL_LCD_BWIDTH
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "Internal LCD line width (1-40, 40 by default)"
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range 1 40
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default 40
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help
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Most LCDs use a standard controller which supports hardware lines of 40
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characters, although sometimes only 16, 20 or 24 of them are really wired
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to the terminal. This results in some non-visible but addressable characters,
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and is the case for most parallel LCDs. Other LCDs, and some serial ones,
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however, use the same line width internally as what is visible. The KS0074
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for example, uses 16 characters per line for 16 visible characters per line.
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This option lets you configure the value used by your LCD in 'custom' profile.
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If you don't know, put '40' here.
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config PANEL_LCD_HWIDTH
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "Hardware LCD line width (1-64, 64 by default)"
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range 1 64
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default 64
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help
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Most LCDs use a single address bit to differentiate line 0 and line 1. Since
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some of them need to be able to address 40 chars with the lower bits, they
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often use the immediately superior power of 2, which is 64, to address the
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next line.
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If you don't know what your LCD uses, in doubt let 16 here for a 2x16, and
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64 here for a 2x40.
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config PANEL_LCD_CHARSET
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "LCD character set (0=normal, 1=KS0074)"
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range 0 1
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default 0
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help
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Some controllers such as the KS0074 use a somewhat strange character set
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where many symbols are at unusual places. The driver knows how to map
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'standard' ASCII characters to the character sets used by these controllers.
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Valid values are :
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0 : normal (untranslated) character set
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1 : KS0074 character set
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If you don't know, use the normal one (0).
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config PANEL_LCD_PROTO
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "LCD communication mode (0=parallel 8 bits, 1=serial)"
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range 0 1
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default 0
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help
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This driver now supports any serial or parallel LCD wired to a parallel
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port. But before assigning signals, the driver needs to know if it will
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be driving a serial LCD or a parallel one. Serial LCDs only use 2 wires
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(SDA/SCL), while parallel ones use 2 or 3 wires for the control signals
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(E, RS, sometimes RW), and 4 or 8 for the data. Use 0 here for a 8 bits
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parallel LCD, and 1 for a serial LCD.
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config PANEL_LCD_PIN_E
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depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO="0"
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int "Parallel port pin number & polarity connected to the LCD E signal (-17...17) "
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range -17 17
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default 14
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help
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This describes the number of the parallel port pin to which the LCD 'E'
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signal has been connected. It can be :
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0 : no connection (eg: connected to ground)
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1..17 : directly connected to any of these pins on the DB25 plug
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-1..-17 : connected to the same pin through an inverter (eg: transistor).
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Default for the 'E' pin in custom profile is '14' (AUTOFEED).
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config PANEL_LCD_PIN_RS
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depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO="0"
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int "Parallel port pin number & polarity connected to the LCD RS signal (-17...17) "
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range -17 17
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default 17
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help
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This describes the number of the parallel port pin to which the LCD 'RS'
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signal has been connected. It can be :
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0 : no connection (eg: connected to ground)
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1..17 : directly connected to any of these pins on the DB25 plug
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-1..-17 : connected to the same pin through an inverter (eg: transistor).
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Default for the 'RS' pin in custom profile is '17' (SELECT IN).
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config PANEL_LCD_PIN_RW
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depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO="0"
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int "Parallel port pin number & polarity connected to the LCD RW signal (-17...17) "
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range -17 17
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default 16
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help
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This describes the number of the parallel port pin to which the LCD 'RW'
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signal has been connected. It can be :
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0 : no connection (eg: connected to ground)
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1..17 : directly connected to any of these pins on the DB25 plug
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-1..-17 : connected to the same pin through an inverter (eg: transistor).
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Default for the 'RW' pin in custom profile is '16' (INIT).
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config PANEL_LCD_PIN_SCL
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depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO!="0"
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int "Parallel port pin number & polarity connected to the LCD SCL signal (-17...17) "
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range -17 17
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default 1
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help
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This describes the number of the parallel port pin to which the serial
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LCD 'SCL' signal has been connected. It can be :
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0 : no connection (eg: connected to ground)
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1..17 : directly connected to any of these pins on the DB25 plug
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-1..-17 : connected to the same pin through an inverter (eg: transistor).
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Default for the 'SCL' pin in custom profile is '1' (STROBE).
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config PANEL_LCD_PIN_SDA
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depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO!="0"
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int "Parallel port pin number & polarity connected to the LCD SDA signal (-17...17) "
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range -17 17
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default 2
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help
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This describes the number of the parallel port pin to which the serial
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LCD 'SDA' signal has been connected. It can be :
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0 : no connection (eg: connected to ground)
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1..17 : directly connected to any of these pins on the DB25 plug
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-1..-17 : connected to the same pin through an inverter (eg: transistor).
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Default for the 'SDA' pin in custom profile is '2' (D0).
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config PANEL_LCD_PIN_BL
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depends on PANEL_PROFILE="0" && PANEL_LCD="1"
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int "Parallel port pin number & polarity connected to the LCD backlight signal (-17...17) "
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range -17 17
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default 0
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help
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This describes the number of the parallel port pin to which the LCD 'BL' signal
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has been connected. It can be :
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0 : no connection (eg: connected to ground)
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1..17 : directly connected to any of these pins on the DB25 plug
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-1..-17 : connected to the same pin through an inverter (eg: transistor).
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Default for the 'BL' pin in custom profile is '0' (uncontrolled).
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endif # PARPORT_PANEL
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config PANEL_CHANGE_MESSAGE
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bool "Change LCD initialization message ?"
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depends on CHARLCD
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default "n"
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help
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This allows you to replace the boot message indicating the kernel version
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and the driver version with a custom message. This is useful on appliances
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where a simple 'Starting system' message can be enough to stop a customer
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from worrying.
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If you say 'Y' here, you'll be able to choose a message yourself. Otherwise,
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say 'N' and keep the default message with the version.
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config PANEL_BOOT_MESSAGE
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depends on PANEL_CHANGE_MESSAGE="y"
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string "New initialization message"
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default ""
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help
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This allows you to replace the boot message indicating the kernel version
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and the driver version with a custom message. This is useful on appliances
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where a simple 'Starting system' message can be enough to stop a customer
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from worrying.
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An empty message will only clear the display at driver init time. Any other
|
|
printf()-formatted message is valid with newline and escape codes.
|
|
|
|
choice
|
|
prompt "Backlight initial state"
|
|
default CHARLCD_BL_FLASH
|
|
help
|
|
Select the initial backlight state on boot or module load.
|
|
|
|
Previously, there was no option for this: the backlight flashed
|
|
briefly on init. Now you can also turn it off/on.
|
|
|
|
config CHARLCD_BL_OFF
|
|
bool "Off"
|
|
help
|
|
Backlight is initially turned off
|
|
|
|
config CHARLCD_BL_ON
|
|
bool "On"
|
|
help
|
|
Backlight is initially turned on
|
|
|
|
config CHARLCD_BL_FLASH
|
|
bool "Flash"
|
|
help
|
|
Backlight is flashed briefly on init
|
|
|
|
endchoice
|
|
|
|
endif # AUXDISPLAY
|
|
|
|
config PANEL
|
|
tristate "Parallel port LCD/Keypad Panel support (OLD OPTION)"
|
|
depends on PARPORT
|
|
select AUXDISPLAY
|
|
select PARPORT_PANEL
|