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auxdisplay: linedisp: Support configuring the boot message

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Like we do for charlcd, allow the configuration of the initial message
on line-display devices.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Chris Packham 2024-05-31 11:20:54 +12:00 committed by Andy Shevchenko
parent 1bbf5a2156
commit c8ffef985a
2 changed files with 10 additions and 2 deletions
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2
drivers/auxdisplay/Kconfig
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@ -316,7 +316,7 @@ endif # PARPORT_PANEL
config PANEL_CHANGE_MESSAGE
bool "Change LCD initialization message ?"
depends on CHARLCD
depends on CHARLCD || LINEDISP
help
This allows you to replace the boot message indicating the kernel version
and the driver version with a custom message. This is useful on appliances

10
drivers/auxdisplay/line-display.c
View file

@ -8,7 +8,9 @@
* Copyright (C) 2021 Glider bv
*/
#ifndef CONFIG_PANEL_BOOT_MESSAGE
#include <generated/utsrelease.h>
#endif
#include <linux/container_of.h>
#include <linux/device.h>
@ -312,6 +314,12 @@ static int linedisp_init_map(struct linedisp *linedisp)
return 0;
}
#ifdef CONFIG_PANEL_BOOT_MESSAGE
#define LINEDISP_INIT_TEXT CONFIG_PANEL_BOOT_MESSAGE
#else
#define LINEDISP_INIT_TEXT "Linux " UTS_RELEASE " "
#endif
/**
* linedisp_register - register a character line display
* @linedisp: pointer to character line display structure
@ -359,7 +367,7 @@ int linedisp_register(struct linedisp *linedisp, struct device *parent,
goto out_del_timer;
/* display a default message */
err = linedisp_display(linedisp, "Linux " UTS_RELEASE " ", -1);
err = linedisp_display(linedisp, LINEDISP_INIT_TEXT, -1);
if (err)
goto out_del_dev;