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@@ -525,6 +525,284 @@ config VEXPRESS_SYSCFG
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ARM Ltd. Versatile Express uses specialised platform configuration
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bus. System Configuration interface is one of the possible means
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of generating transactions on this bus.
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+config PANEL
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+ tristate "Parallel port LCD/Keypad Panel support"
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+ depends on PARPORT
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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). Both require misc device to be
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+ enabled. This code can either be compiled as a module, or linked into
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+ the kernel and started at boot. If you don't understand what all this
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+ is about, say N.
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+
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+config PANEL_PARPORT
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+ int "Default parallel port number (0=LPT1)"
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+ depends on PANEL
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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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+
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+config PANEL_PROFILE
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+ int "Default panel profile (0-5, 0=custom)"
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+ depends on PANEL
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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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+
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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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+
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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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+
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+config PANEL_KEYPAD
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+ depends on PANEL && 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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+
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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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+
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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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+
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+config PANEL_LCD
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+ depends on PANEL && 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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+
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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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+
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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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+
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+config PANEL_LCD_HEIGHT
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+ depends on PANEL && 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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+
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+config PANEL_LCD_WIDTH
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+ depends on PANEL && 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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+
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+config PANEL_LCD_BWIDTH
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+ depends on PANEL && 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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+
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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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+
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+config PANEL_LCD_HWIDTH
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+ depends on PANEL && 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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+
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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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+
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+config PANEL_LCD_CHARSET
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+ depends on PANEL && 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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+
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+ 0 : normal (untranslated) character set
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+ 1 : KS0074 character set
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+
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+ If you don't know, use the normal one (0).
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+
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+config PANEL_LCD_PROTO
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+ depends on PANEL && 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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+
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+config PANEL_LCD_PIN_E
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+ depends on PANEL && 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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+
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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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+
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+ Default for the 'E' pin in custom profile is '14' (AUTOFEED).
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+
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+config PANEL_LCD_PIN_RS
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+ depends on PANEL && 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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+
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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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+
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+ Default for the 'RS' pin in custom profile is '17' (SELECT IN).
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+
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+config PANEL_LCD_PIN_RW
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+ depends on PANEL && 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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+
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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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+
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+ Default for the 'RW' pin in custom profile is '16' (INIT).
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+
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+config PANEL_LCD_PIN_SCL
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+ depends on PANEL && 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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+
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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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+
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+ Default for the 'SCL' pin in custom profile is '1' (STROBE).
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+
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+config PANEL_LCD_PIN_SDA
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+ depends on PANEL && 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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+
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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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+
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+ Default for the 'SDA' pin in custom profile is '2' (D0).
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+
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+config PANEL_LCD_PIN_BL
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+ depends on PANEL && 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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+
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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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+
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+ Default for the 'BL' pin in custom profile is '0' (uncontrolled).
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+
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+config PANEL_CHANGE_MESSAGE
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+ depends on PANEL
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+ bool "Change LCD initialization message ?"
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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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+
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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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+
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+config PANEL_BOOT_MESSAGE
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+ depends on PANEL && 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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+
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+ An empty message will only clear the display at driver init time. Any other
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+ printf()-formatted message is valid with newline and escape codes.
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source "drivers/misc/c2port/Kconfig"
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source "drivers/misc/eeprom/Kconfig"
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Ksenija Stanojevic