[PATCH] auxdisplay: linedisp: Support configuring the boot message

Chris Packham
2024-05-30T23:21:01Z

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>
---
drivers/auxdisplay/Kconfig | 2 +-
drivers/auxdisplay/line-display.c | 10 +++++++++-
2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
index 69d2138d7efb..21545ffba065 100644
--- a/drivers/auxdisplay/Kconfig
+++ b/drivers/auxdisplay/Kconfig
@@ -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
diff --git a/drivers/auxdisplay/line-display.c b/drivers/auxdisplay/line-display.c
index e2b546210f8d..837ca63c8368 100644
--- a/drivers/auxdisplay/line-display.c
+++ b/drivers/auxdisplay/line-display.c
@@ -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 LINE_DISP_INIT_TEXT CONFIG_PANEL_BOOT_MESSAGE
+#else
+#define LINE_DISP_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, LINE_DISP_INIT_TEXT, -1);
if (err)
goto out_del_dev;

--
2.45.1