From b9c0c678f7267831b73e1d73fb30c9b4658e91ec Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Tue, 24 Sep 2013 12:40:44 +0200 Subject: [PATCH] NFC: Document NFC targets sens_res field SENS_RES has no specific endiannes attached to it, the kernel ABI is the following one: Byte 2 (As described by the NFC Forum Digital spec) is the u16 most significant byte. Signed-off-by: Samuel Ortiz --- include/net/nfc/nfc.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h index c2aee4875b65..5329804ebb70 100644 --- a/include/net/nfc/nfc.h +++ b/include/net/nfc/nfc.h @@ -85,6 +85,14 @@ struct nfc_ops { #define NFC_MAX_GT_LEN 48 #define NFC_ATR_RES_GT_OFFSET 15 +/** + * struct nfc_target - NFC target descriptiom + * + * @sens_res: 2 bytes describing the target SENS_RES response, if the target + * is a type A one. The %sens_res most significant byte must be byte 2 + * as described by the NFC Forum digital specification (i.e. the platform + * configuration one) while %sens_res least significant byte is byte 1. + */ struct nfc_target { u32 idx; u32 supported_protocols; -- 2.39.5