#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;
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);
*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:
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)
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);
*
* @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);
*
* @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);
*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;
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;
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;
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];
}
/**
* 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
*
* 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),
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;
}
projects / karo-tx-linux.git / blobdiff