firmware: smccc: Export revision soc_id function

Haxk20 · vireshk · commit 9cf3415ade2d · 2024-04-19T12:34:27.000+05:30
The "SoC ID revision" as provided via the SMCCC SOCID interface can be
valuable information for drivers, when certain functionality depends
on a die revision, for instance.
One example is the sun50i-cpufreq-nvmem driver, which needs this
information to determine the speed bin of the SoC.

Export the arm_smccc_get_soc_id_revision() function so that it can be
called by any driver.

Signed-off-by: Martin Botka &lt;martin.botka@somainline.org&gt;
Signed-off-by: Andre Przywara &lt;andre.przywara@arm.com&gt;
Acked-by: Sudeep Holla &lt;sudeep.holla@arm.com&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
diff --git a/drivers/firmware/smccc/smccc.c b/drivers/firmware/smccc/smccc.c
@@ -69,6 +69,7 @@ s32 arm_smccc_get_soc_id_revision(void)
 {
 	return smccc_soc_id_revision;
 }
+EXPORT_SYMBOL_GPL(arm_smccc_get_soc_id_revision);
 
 static int __init smccc_devices_init(void)
 {

Original file line number	Diff line number	Diff line change
`@@ -69,6 +69,7 @@ s32 arm_smccc_get_soc_id_revision(void)`
`69`	`69`	`{`
`70`	`70`	`return smccc_soc_id_revision;`
`71`	`71`	`}`
	`72`	`+EXPORT_SYMBOL_GPL(arm_smccc_get_soc_id_revision);`
`72`	`73`
`73`	`74`	`static int __init smccc_devices_init(void)`
`74`	`75`	`{`