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| author | Eric Lapuyade <eric.lapuyade@linux.intel.com> | 2013-09-05 11:02:21 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-09-25 01:35:41 +0200 |
| commit | fa544fff62aeeb0cf8008c61077aae10fb1407a9 (patch) | |
| tree | 42e24efbcaca24ad48bde91259696649388483d3 /include/net/nfc | |
| parent | NFC: Move struct nfc_phy_ops out of HCI up to nfc core level (diff) | |
| download | linux-fa544fff62aeeb0cf8008c61077aae10fb1407a9.tar.xz linux-fa544fff62aeeb0cf8008c61077aae10fb1407a9.zip | |
NFC: NCI: Simplify NCI SPI to become a simple framing/checking layer
NCI SPI layer should not manage the nci dev, this is the job of the nci
chipset driver. This layer should be limited to frame/deframe nci
packets, and optionnaly check integrity (crc) and manage the ack/nak
protocol.
The NCI SPI must not be mixed up with an NCI dev. spi_[dev|device] are
therefore renamed to a simple spi for more clarity.
The header and crc sizes are moved to nci.h so that drivers can use
them to reserve space in outgoing skbs.
nci_spi_send() is exported to be accessible by drivers.
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/net/nfc')
| -rw-r--r-- | include/net/nfc/nci.h | 4 | ||||
| -rw-r--r-- | include/net/nfc/nci_core.h | 41 |
2 files changed, 15 insertions, 30 deletions
diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h index 88785e5c6b2c..e5aa5acafea0 100644 --- a/include/net/nfc/nci.h +++ b/include/net/nfc/nci.h @@ -166,6 +166,10 @@ #define NCI_GID_NFCEE_MGMT 0x2 #define NCI_GID_PROPRIETARY 0xf +/* ----- NCI over SPI head/crc(tail) room needed for outgoing frames ----- */ +#define NCI_SPI_HDR_LEN 4 +#define NCI_SPI_CRC_LEN 2 + /* ---- NCI Packet structures ---- */ #define NCI_CTRL_HDR_SIZE 3 #define NCI_DATA_HDR_SIZE 3 diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h index c08399621c8b..37ba06f2dfa9 100644 --- a/include/net/nfc/nci_core.h +++ b/include/net/nfc/nci_core.h @@ -207,16 +207,14 @@ int nci_to_errno(__u8 code); #define NCI_SPI_CRC_ENABLED 0x01 /* ----- NCI SPI structures ----- */ -struct nci_spi_dev; +struct nci_spi; struct nci_spi_ops { - int (*open)(struct nci_spi_dev *nsdev); - int (*close)(struct nci_spi_dev *nsdev); - void (*assert_int)(struct nci_spi_dev *nsdev); - void (*deassert_int)(struct nci_spi_dev *nsdev); + void (*assert_int)(struct nci_spi *nspi); + void (*deassert_int)(struct nci_spi *nspi); }; -struct nci_spi_dev { +struct nci_spi { struct nci_dev *ndev; struct spi_device *spi; struct nci_spi_ops *ops; @@ -227,31 +225,14 @@ struct nci_spi_dev { struct completion req_completion; u8 req_result; - - void *driver_data; }; -/* ----- NCI SPI Devices ----- */ -struct nci_spi_dev *nci_spi_allocate_device(struct spi_device *spi, - struct nci_spi_ops *ops, - u32 supported_protocols, - u32 supported_se, - u8 acknowledge_mode, - unsigned int delay); -void nci_spi_free_device(struct nci_spi_dev *nsdev); -int nci_spi_register_device(struct nci_spi_dev *nsdev); -void nci_spi_unregister_device(struct nci_spi_dev *nsdev); -int nci_spi_recv_frame(struct nci_spi_dev *nsdev); - -static inline void nci_spi_set_drvdata(struct nci_spi_dev *nsdev, - void *data) -{ - nsdev->driver_data = data; -} - -static inline void *nci_spi_get_drvdata(struct nci_spi_dev *nsdev) -{ - return nsdev->driver_data; -} +/* ----- NCI SPI ----- */ +struct nci_spi *nci_spi_allocate_spi(struct spi_device *spi, + struct nci_spi_ops *ops, + u8 acknowledge_mode, unsigned int delay, + struct nci_dev *ndev); +int nci_spi_send(struct nci_spi *nspi, struct sk_buff *skb); +int nci_spi_recv_frame(struct nci_spi *nspi); #endif /* __NCI_CORE_H */ |