CONFIG_PANEL_LCD_HWIDTH: Hardware LCD line width (1-64, 64 by default)

General informations

The Linux kernel configuration item CONFIG_PANEL_LCD_HWIDTH has multiple definitions:

Hardware LCD line width (1-64, 64 by default) found in drivers/auxdisplay/Kconfig

The configuration item CONFIG_PANEL_LCD_HWIDTH:

• prompt: Hardware LCD line width (1-64, 64 by default)
• 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, 6.0–6.8, 6.9-rc+HEAD

Help text

Most LCDs use a single address bit to differentiate line 0 and line 1. Since some of them need to be able to address 40 chars with the lower bits, they often use the immediately superior power of 2, which is 64, to address the next line.

If you don't know what your LCD uses, in doubt let 16 here for a 2x16, and 64 here for a 2x40.

Hardware LCD line width (1-64, 64 by default) found in drivers/misc/Kconfig

The configuration item CONFIG_PANEL_LCD_HWIDTH:

• prompt: Hardware LCD line width (1-64, 64 by default)
• 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

Most LCDs use a single address bit to differentiate line 0 and line 1. Since some of them need to be able to address 40 chars with the lower bits, they often use the immediately superior power of 2, which is 64, to address the next line.

If you don't know what your LCD uses, in doubt let 16 here for a 2x16, and 64 here for a 2x40.

Hardware LCD line width (1-64, 64 by default) found in drivers/staging/panel/Kconfig

The configuration item CONFIG_PANEL_LCD_HWIDTH:

• prompt: Hardware LCD line width (1-64, 64 by default)
• 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

Most LCDs use a single address bit to differentiate line 0 and line 1. Since some of them need to be able to address 40 chars with the lower bits, they often use the immediately superior power of 2, which is 64, to address the next line.

If you don't know what your LCD uses, in doubt let 16 here for a 2x16, and 64 here for a 2x40.

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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