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x86: cpu: add docstring to scu_ipc_command()

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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>
This commit is contained in:
Georgii Staroselskii 2018-09-11 13:31:10 +03:00 • committed by Bin Meng
parent f7ce2d6e65
commit 6321da5263
1 changed files with 11 additions and 0 deletions
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11
arch/x86/lib/scu.c
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@ -180,6 +180,17 @@ int scu_ipc_simple_command(u32 cmd, u32 sub)
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;