diff options
Diffstat (limited to 'net/nfc/nci/spi.c')
-rw-r--r-- | net/nfc/nci/spi.c | 128 |
1 files changed, 64 insertions, 64 deletions
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c index b6795955432..e66fda4d9ed 100644 --- a/net/nfc/nci/spi.c +++ b/net/nfc/nci/spi.c @@ -41,21 +41,21 @@ #define CRC_INIT 0xFFFF -static int nci_spi_open(struct nci_dev *nci_dev) +static int nci_spi_open(struct nci_dev *ndev) { - struct nci_spi_dev *ndev = nci_get_drvdata(nci_dev); + struct nci_spi_dev *nsdev = nci_get_drvdata(ndev); - return ndev->ops->open(ndev); + return nsdev->ops->open(nsdev); } -static int nci_spi_close(struct nci_dev *nci_dev) +static int nci_spi_close(struct nci_dev *ndev) { - struct nci_spi_dev *ndev = nci_get_drvdata(nci_dev); + struct nci_spi_dev *nsdev = nci_get_drvdata(ndev); - return ndev->ops->close(ndev); + return nsdev->ops->close(nsdev); } -static int __nci_spi_send(struct nci_spi_dev *ndev, struct sk_buff *skb) +static int __nci_spi_send(struct nci_spi_dev *nsdev, struct sk_buff *skb) { struct spi_message m; struct spi_transfer t; @@ -63,32 +63,32 @@ static int __nci_spi_send(struct nci_spi_dev *ndev, struct sk_buff *skb) t.tx_buf = skb->data; t.len = skb->len; t.cs_change = 0; - t.delay_usecs = ndev->xfer_udelay; + t.delay_usecs = nsdev->xfer_udelay; spi_message_init(&m); spi_message_add_tail(&t, &m); - return spi_sync(ndev->spi, &m); + return spi_sync(nsdev->spi, &m); } -static int nci_spi_send(struct nci_dev *nci_dev, struct sk_buff *skb) +static int nci_spi_send(struct nci_dev *ndev, struct sk_buff *skb) { - struct nci_spi_dev *ndev = nci_get_drvdata(nci_dev); + struct nci_spi_dev *nsdev = nci_get_drvdata(ndev); unsigned int payload_len = skb->len; unsigned char *hdr; int ret; long completion_rc; - ndev->ops->deassert_int(ndev); + nsdev->ops->deassert_int(nsdev); /* add the NCI SPI header to the start of the buffer */ hdr = skb_push(skb, NCI_SPI_HDR_LEN); hdr[0] = NCI_SPI_DIRECT_WRITE; - hdr[1] = ndev->acknowledge_mode; + hdr[1] = nsdev->acknowledge_mode; hdr[2] = payload_len >> 8; hdr[3] = payload_len & 0xFF; - if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) { + if (nsdev->acknowledge_mode == NCI_SPI_CRC_ENABLED) { u16 crc; crc = crc_ccitt(CRC_INIT, skb->data, skb->len); @@ -96,20 +96,20 @@ static int nci_spi_send(struct nci_dev *nci_dev, struct sk_buff *skb) *skb_put(skb, 1) = crc & 0xFF; } - ret = __nci_spi_send(ndev, skb); + ret = __nci_spi_send(nsdev, skb); kfree_skb(skb); - ndev->ops->assert_int(ndev); + nsdev->ops->assert_int(nsdev); - if (ret != 0 || ndev->acknowledge_mode == NCI_SPI_CRC_DISABLED) + if (ret != 0 || nsdev->acknowledge_mode == NCI_SPI_CRC_DISABLED) goto done; - init_completion(&ndev->req_completion); - completion_rc = - wait_for_completion_interruptible_timeout(&ndev->req_completion, - NCI_SPI_SEND_TIMEOUT); + init_completion(&nsdev->req_completion); + completion_rc = wait_for_completion_interruptible_timeout( + &nsdev->req_completion, + NCI_SPI_SEND_TIMEOUT); - if (completion_rc <= 0 || ndev->req_result == ACKNOWLEDGE_NACK) + if (completion_rc <= 0 || nsdev->req_result == ACKNOWLEDGE_NACK) ret = -EIO; done: @@ -141,7 +141,7 @@ struct nci_spi_dev *nci_spi_allocate_device(struct spi_device *spi, u8 acknowledge_mode, unsigned int delay) { - struct nci_spi_dev *ndev; + struct nci_spi_dev *nsdev; int tailroom = 0; if (!ops->open || !ops->close || !ops->assert_int || !ops->deassert_int) @@ -150,36 +150,36 @@ struct nci_spi_dev *nci_spi_allocate_device(struct spi_device *spi, if (!supported_protocols) return NULL; - ndev = devm_kzalloc(&spi->dev, sizeof(struct nci_spi_dev), GFP_KERNEL); - if (!ndev) + nsdev = devm_kzalloc(&spi->dev, sizeof(struct nci_spi_dev), GFP_KERNEL); + if (!nsdev) return NULL; - ndev->ops = ops; - ndev->acknowledge_mode = acknowledge_mode; - ndev->xfer_udelay = delay; + nsdev->ops = ops; + nsdev->acknowledge_mode = acknowledge_mode; + nsdev->xfer_udelay = delay; if (acknowledge_mode == NCI_SPI_CRC_ENABLED) tailroom += NCI_SPI_CRC_LEN; - ndev->nci_dev = nci_allocate_device(&nci_spi_ops, supported_protocols, - NCI_SPI_HDR_LEN, tailroom); - if (!ndev->nci_dev) + nsdev->ndev = nci_allocate_device(&nci_spi_ops, supported_protocols, + NCI_SPI_HDR_LEN, tailroom); + if (!nsdev->ndev) return NULL; - nci_set_drvdata(ndev->nci_dev, ndev); + nci_set_drvdata(nsdev->ndev, nsdev); - return ndev; + return nsdev; } EXPORT_SYMBOL_GPL(nci_spi_allocate_device); /** * nci_spi_free_device - deallocate nci spi device * - * @ndev: The nci spi device to deallocate + * @nsdev: The nci spi device to deallocate */ -void nci_spi_free_device(struct nci_spi_dev *ndev) +void nci_spi_free_device(struct nci_spi_dev *nsdev) { - nci_free_device(ndev->nci_dev); + nci_free_device(nsdev->ndev); } EXPORT_SYMBOL_GPL(nci_spi_free_device); @@ -188,9 +188,9 @@ EXPORT_SYMBOL_GPL(nci_spi_free_device); * * @pdev: The nci spi device to register */ -int nci_spi_register_device(struct nci_spi_dev *ndev) +int nci_spi_register_device(struct nci_spi_dev *nsdev) { - return nci_register_device(ndev->nci_dev); + return nci_register_device(nsdev->ndev); } EXPORT_SYMBOL_GPL(nci_spi_register_device); @@ -199,20 +199,20 @@ EXPORT_SYMBOL_GPL(nci_spi_register_device); * * @dev: The nci spi device to unregister */ -void nci_spi_unregister_device(struct nci_spi_dev *ndev) +void nci_spi_unregister_device(struct nci_spi_dev *nsdev) { - nci_unregister_device(ndev->nci_dev); + nci_unregister_device(nsdev->ndev); } EXPORT_SYMBOL_GPL(nci_spi_unregister_device); -static int send_acknowledge(struct nci_spi_dev *ndev, u8 acknowledge) +static int send_acknowledge(struct nci_spi_dev *nsdev, u8 acknowledge) { struct sk_buff *skb; unsigned char *hdr; u16 crc; int ret; - skb = nci_skb_alloc(ndev->nci_dev, 0, GFP_KERNEL); + skb = nci_skb_alloc(nsdev->ndev, 0, GFP_KERNEL); /* add the NCI SPI header to the start of the buffer */ hdr = skb_push(skb, NCI_SPI_HDR_LEN); @@ -225,14 +225,14 @@ static int send_acknowledge(struct nci_spi_dev *ndev, u8 acknowledge) *skb_put(skb, 1) = crc >> 8; *skb_put(skb, 1) = crc & 0xFF; - ret = __nci_spi_send(ndev, skb); + ret = __nci_spi_send(nsdev, skb); kfree_skb(skb); return ret; } -static struct sk_buff *__nci_spi_recv_frame(struct nci_spi_dev *ndev) +static struct sk_buff *__nci_spi_recv_frame(struct nci_spi_dev *nsdev) { struct sk_buff *skb; struct spi_message m; @@ -243,7 +243,7 @@ static struct sk_buff *__nci_spi_recv_frame(struct nci_spi_dev *ndev) spi_message_init(&m); req[0] = NCI_SPI_DIRECT_READ; - req[1] = ndev->acknowledge_mode; + req[1] = nsdev->acknowledge_mode; tx.tx_buf = req; tx.len = 2; tx.cs_change = 0; @@ -252,18 +252,18 @@ static struct sk_buff *__nci_spi_recv_frame(struct nci_spi_dev *ndev) rx.len = 2; rx.cs_change = 1; spi_message_add_tail(&rx, &m); - ret = spi_sync(ndev->spi, &m); + ret = spi_sync(nsdev->spi, &m); if (ret) return NULL; - if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) + if (nsdev->acknowledge_mode == NCI_SPI_CRC_ENABLED) rx_len = ((resp_hdr[0] & NCI_SPI_MSB_PAYLOAD_MASK) << 8) + resp_hdr[1] + NCI_SPI_CRC_LEN; else rx_len = (resp_hdr[0] << 8) | resp_hdr[1]; - skb = nci_skb_alloc(ndev->nci_dev, rx_len, GFP_KERNEL); + skb = nci_skb_alloc(nsdev->ndev, rx_len, GFP_KERNEL); if (!skb) return NULL; @@ -271,14 +271,14 @@ static struct sk_buff *__nci_spi_recv_frame(struct nci_spi_dev *ndev) rx.rx_buf = skb_put(skb, rx_len); rx.len = rx_len; rx.cs_change = 0; - rx.delay_usecs = ndev->xfer_udelay; + rx.delay_usecs = nsdev->xfer_udelay; spi_message_add_tail(&rx, &m); - ret = spi_sync(ndev->spi, &m); + ret = spi_sync(nsdev->spi, &m); if (ret) goto receive_error; - if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) { + if (nsdev->acknowledge_mode == NCI_SPI_CRC_ENABLED) { *skb_push(skb, 1) = resp_hdr[1]; *skb_push(skb, 1) = resp_hdr[0]; } @@ -320,7 +320,7 @@ static u8 nci_spi_get_ack(struct sk_buff *skb) /** * nci_spi_recv_frame - receive frame from NCI SPI drivers * - * @ndev: The nci spi device + * @nsdev: The nci spi device * Context: can sleep * * This call may only be used from a context that may sleep. The sleep @@ -328,32 +328,32 @@ static u8 nci_spi_get_ack(struct sk_buff *skb) * * It returns zero on success, else a negative error code. */ -int nci_spi_recv_frame(struct nci_spi_dev *ndev) +int nci_spi_recv_frame(struct nci_spi_dev *nsdev) { struct sk_buff *skb; int ret = 0; - ndev->ops->deassert_int(ndev); + nsdev->ops->deassert_int(nsdev); /* Retrieve frame from SPI */ - skb = __nci_spi_recv_frame(ndev); + skb = __nci_spi_recv_frame(nsdev); if (!skb) { ret = -EIO; goto done; } - if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) { + if (nsdev->acknowledge_mode == NCI_SPI_CRC_ENABLED) { if (!nci_spi_check_crc(skb)) { - send_acknowledge(ndev, ACKNOWLEDGE_NACK); + send_acknowledge(nsdev, ACKNOWLEDGE_NACK); goto done; } /* In case of acknowledged mode: if ACK or NACK received, * unblock completion of latest frame sent. */ - ndev->req_result = nci_spi_get_ack(skb); - if (ndev->req_result) - complete(&ndev->req_completion); + nsdev->req_result = nci_spi_get_ack(skb); + if (nsdev->req_result) + complete(&nsdev->req_completion); } /* If there is no payload (ACK/NACK only frame), @@ -364,14 +364,14 @@ int nci_spi_recv_frame(struct nci_spi_dev *ndev) goto done; } - if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) - send_acknowledge(ndev, ACKNOWLEDGE_ACK); + if (nsdev->acknowledge_mode == NCI_SPI_CRC_ENABLED) + send_acknowledge(nsdev, ACKNOWLEDGE_ACK); /* Forward skb to NCI core layer */ - ret = nci_recv_frame(ndev->nci_dev, skb); + ret = nci_recv_frame(nsdev->ndev, skb); done: - ndev->ops->assert_int(ndev); + nsdev->ops->assert_int(nsdev); return ret; } |