CONFIG_PANEL_LCD_PIN_BL: Parallel port pin number & polarity connected to the LCD backlight signal (-17...17)

General informations

The Linux kernel configuration item CONFIG_PANEL_LCD_PIN_BL has multiple definitions:

Parallel port pin number & polarity connected to the LCD backlight signal (-17...17) found in drivers/auxdisplay/Kconfig

The configuration item CONFIG_PANEL_LCD_PIN_BL:

• prompt: Parallel port pin number & polarity connected to the LCD backlight signal (-17...17)
• type: int
• depends on: CONFIG_PANEL_PROFILE ="0" && CONFIG_PANEL_LCD ="1"
• defined in drivers/auxdisplay/Kconfig
• found in Linux kernels: 4.12–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD

Help text

This describes the number of the parallel port pin to which the LCD 'BL' signal has been connected. It can be :

0 : no connection (eg: connected to ground) 1..17 : directly connected to any of these pins on the DB25 plug -1..-17 : connected to the same pin through an inverter (eg: transistor).

Default for the 'BL' pin in custom profile is '0' (uncontrolled).

Parallel port pin number & polarity connected to the LCD backlight signal (-17...17) found in drivers/misc/Kconfig

The configuration item CONFIG_PANEL_LCD_PIN_BL:

• prompt: Parallel port pin number & polarity connected to the LCD backlight signal (-17...17)
• type: int
• depends on: CONFIG_PANEL_PROFILE ="0" && CONFIG_PANEL_LCD ="1"
• defined in drivers/misc/Kconfig
• found in Linux kernels: 4.6–4.11

Help text

This describes the number of the parallel port pin to which the LCD 'BL' signal has been connected. It can be :

0 : no connection (eg: connected to ground) 1..17 : directly connected to any of these pins on the DB25 plug -1..-17 : connected to the same pin through an inverter (eg: transistor).

Default for the 'BL' pin in custom profile is '0' (uncontrolled).

Parallel port pin number & polarity connected to the LCD backlight signal (-17...17) found in drivers/staging/panel/Kconfig

The configuration item CONFIG_PANEL_LCD_PIN_BL:

• prompt: Parallel port pin number & polarity connected to the LCD backlight signal (-17...17)
• type: int
• depends on: CONFIG_PANEL && CONFIG_PANEL_PROFILE ="0" && CONFIG_PANEL_LCD ="1"
• defined in drivers/staging/panel/Kconfig
• found in Linux kernels: 2.6.29–2.6.39, 3.0–3.19, 4.0–4.5

Help text

This describes the number of the parallel port pin to which the LCD 'BL' signal has been connected. It can be :

0 : no connection (eg: connected to ground) 1..17 : directly connected to any of these pins on the DB25 plug -1..-17 : connected to the same pin through an inverter (eg: transistor).

Default for the 'BL' pin in custom profile is '0' (uncontrolled).

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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