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of: Add __of_device_is_status() and makes more generic status check

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Linux Kernel has __of_device_is_available() / __of_device_is_fail(),
these are checking if the status was "okay" / "ok" / "fail" / "fail-".

Add more generic __of_device_is_status() function for these.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/87cyuagfba.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Kuninori Morimoto 2024-01-10 01:14:34 +00:00 committed by Geert Uytterhoeven
parent 6613476e22
commit b5056ecf7c
1 changed files with 36 additions and 21 deletions
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57
drivers/of/base.c
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@ -415,6 +415,37 @@ int of_machine_is_compatible(const char *compat)
}
EXPORT_SYMBOL(of_machine_is_compatible);
static bool __of_device_is_status(const struct device_node *device,
const char * const*strings)
{
const char *status;
int statlen;
if (!device)
return false;
status = __of_get_property(device, "status", &statlen);
if (status == NULL)
return false;
if (statlen > 0) {
while (*strings) {
unsigned int len = strlen(*strings);
if ((*strings)[len - 1] == '-') {
if (!strncmp(status, *strings, len))
return true;
} else {
if (!strcmp(status, *strings))
return true;
}
strings++;
}
}
return false;
}
/**
* __of_device_is_available - check if a device is available for use
*
@ -425,22 +456,13 @@ EXPORT_SYMBOL(of_machine_is_compatible);
*/
static bool __of_device_is_available(const struct device_node *device)
{
const char *status;
int statlen;
static const char * const ok[] = {"okay", "ok", NULL};
if (!device)
return false;
status = __of_get_property(device, "status", &statlen);
if (status == NULL)
return true;
if (statlen > 0) {
if (!strcmp(status, "okay") || !strcmp(status, "ok"))
return true;
}
return false;
return !__of_get_property(device, "status", NULL) ||
__of_device_is_status(device, ok);
}
/**
@ -474,16 +496,9 @@ EXPORT_SYMBOL(of_device_is_available);
*/
static bool __of_device_is_fail(const struct device_node *device)
{
const char *status;
static const char * const fail[] = {"fail", "fail-", NULL};
if (!device)
return false;
status = __of_get_property(device, "status", NULL);
if (status == NULL)
return false;
return !strcmp(status, "fail") || !strncmp(status, "fail-", 5);
return __of_device_is_status(device, fail);
}
/**