41 static int __nci_spi_send(struct nci_spi *nspi, struct sk_buff *skb,  in __nci_spi_send()  argument
58 	t.delay_usecs = nspi->xfer_udelay;  in __nci_spi_send()
63 	return spi_sync(nspi->spi, &m);  in __nci_spi_send()
66 int nci_spi_send(struct nci_spi *nspi,  in nci_spi_send()  argument
78 	hdr[1] = nspi->acknowledge_mode;  in nci_spi_send()
82 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in nci_spi_send()
92 		ret = __nci_spi_send(nspi, NULL, 1);  in nci_spi_send()
104 	ret = __nci_spi_send(nspi, skb, 0);  in nci_spi_send()
105 	if (ret != 0 || nspi->acknowledge_mode == NCI_SPI_CRC_DISABLED)  in nci_spi_send()
108 	reinit_completion(&nspi->req_completion);  in nci_spi_send()
110 							&nspi->req_completion,  in nci_spi_send()
113 	if (completion_rc <= 0 || nspi->req_result == ACKNOWLEDGE_NACK)  in nci_spi_send()
137 	struct nci_spi *nspi;  in nci_spi_allocate_spi()  local
139 	nspi = devm_kzalloc(&spi->dev, sizeof(struct nci_spi), GFP_KERNEL);  in nci_spi_allocate_spi()
140 	if (!nspi)  in nci_spi_allocate_spi()
143 	nspi->acknowledge_mode = acknowledge_mode;  in nci_spi_allocate_spi()
144 	nspi->xfer_udelay = delay;  in nci_spi_allocate_spi()
146 	nspi->spi = spi;  in nci_spi_allocate_spi()
147 	nspi->ndev = ndev;  in nci_spi_allocate_spi()
148 	init_completion(&nspi->req_completion);  in nci_spi_allocate_spi()
150 	return nspi;  in nci_spi_allocate_spi()
154 static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge)  in send_acknowledge()  argument
161 	skb = nci_skb_alloc(nspi->ndev, 0, GFP_KERNEL);  in send_acknowledge()
174 	ret = __nci_spi_send(nspi, skb, 0);  in send_acknowledge()
181 static struct sk_buff *__nci_spi_read(struct nci_spi *nspi)  in __nci_spi_read()  argument
194 	req[1] = nspi->acknowledge_mode;  in __nci_spi_read()
206 	ret = spi_sync(nspi->spi, &m);  in __nci_spi_read()
210 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED)  in __nci_spi_read()
216 	skb = nci_skb_alloc(nspi->ndev, rx_len, GFP_KERNEL);  in __nci_spi_read()
226 	rx.delay_usecs = nspi->xfer_udelay;  in __nci_spi_read()
229 	ret = spi_sync(nspi->spi, &m);  in __nci_spi_read()
233 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in __nci_spi_read()
283 struct sk_buff *nci_spi_read(struct nci_spi *nspi)  in nci_spi_read()  argument
288 	skb = __nci_spi_read(nspi);  in nci_spi_read()
292 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in nci_spi_read()
294 			send_acknowledge(nspi, ACKNOWLEDGE_NACK);  in nci_spi_read()
301 		nspi->req_result = nci_spi_get_ack(skb);  in nci_spi_read()
302 		if (nspi->req_result)  in nci_spi_read()
303 			complete(&nspi->req_completion);  in nci_spi_read()
315 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED)  in nci_spi_read()
316 		send_acknowledge(nspi, ACKNOWLEDGE_ACK);  in nci_spi_read()