x86: cpu: add docstring to scu_ipc_command()
These comments were copied from the Linux kernel driver in
drivers/platform/x86/intel_scu_ipc.c
Signed-off-by: Georgii Staroselskii <georgii.staroselskii@emlid.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/lib/scu.c b/arch/x86/lib/scu.c
index af241ef..a6f8297 100644
--- a/arch/x86/lib/scu.c
+++ b/arch/x86/lib/scu.c
@@ -180,6 +180,17 @@
return scu_ipc_check_status(scu->regs);
}
+/**
+ * scu_ipc_command - command with data
+ * @cmd: command
+ * @sub: sub type
+ * @in: input data
+ * @inlen: input length in dwords
+ * @out: output data
+ * @outlen: output length in dwords
+ *
+ * Issue a command to the SCU which involves data transfers.
+ */
int scu_ipc_command(u32 cmd, u32 sub, u32 *in, int inlen, u32 *out, int outlen)
{
struct scu *scu;