30 static int __nci_spi_send(struct nci_spi *nspi, struct sk_buff *skb,  in __nci_spi_send()  argument
47 	t.delay_usecs = nspi->xfer_udelay;  in __nci_spi_send()
48 	t.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_send()
53 	return spi_sync(nspi->spi, &m);  in __nci_spi_send()
56 int nci_spi_send(struct nci_spi *nspi,  in nci_spi_send()  argument
68 	hdr[1] = nspi->acknowledge_mode;  in nci_spi_send()
72 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in nci_spi_send()
82 		ret = __nci_spi_send(nspi, NULL, 1);  in nci_spi_send()
94 	ret = __nci_spi_send(nspi, skb, 0);  in nci_spi_send()
95 	if (ret != 0 || nspi->acknowledge_mode == NCI_SPI_CRC_DISABLED)  in nci_spi_send()
98 	reinit_completion(&nspi->req_completion);  in nci_spi_send()
100 							&nspi->req_completion,  in nci_spi_send()
103 	if (completion_rc <= 0 || nspi->req_result == ACKNOWLEDGE_NACK)  in nci_spi_send()
127 	struct nci_spi *nspi;  in nci_spi_allocate_spi()  local
129 	nspi = devm_kzalloc(&spi->dev, sizeof(struct nci_spi), GFP_KERNEL);  in nci_spi_allocate_spi()
130 	if (!nspi)  in nci_spi_allocate_spi()
133 	nspi->acknowledge_mode = acknowledge_mode;  in nci_spi_allocate_spi()
134 	nspi->xfer_udelay = delay;  in nci_spi_allocate_spi()
136 	nspi->xfer_speed_hz = 0;  in nci_spi_allocate_spi()
137 	nspi->spi = spi;  in nci_spi_allocate_spi()
138 	nspi->ndev = ndev;  in nci_spi_allocate_spi()
139 	init_completion(&nspi->req_completion);  in nci_spi_allocate_spi()
141 	return nspi;  in nci_spi_allocate_spi()
145 static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge)  in send_acknowledge()  argument
152 	skb = nci_skb_alloc(nspi->ndev, 0, GFP_KERNEL);  in send_acknowledge()
167 	ret = __nci_spi_send(nspi, skb, 0);  in send_acknowledge()
174 static struct sk_buff *__nci_spi_read(struct nci_spi *nspi)  in __nci_spi_read()  argument
187 	req[1] = nspi->acknowledge_mode;  in __nci_spi_read()
191 	tx.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_read()
198 	rx.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_read()
201 	ret = spi_sync(nspi->spi, &m);  in __nci_spi_read()
205 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED)  in __nci_spi_read()
211 	skb = nci_skb_alloc(nspi->ndev, rx_len, GFP_KERNEL);  in __nci_spi_read()
221 	rx.delay_usecs = nspi->xfer_udelay;  in __nci_spi_read()
222 	rx.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_read()
225 	ret = spi_sync(nspi->spi, &m);  in __nci_spi_read()
229 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in __nci_spi_read()
279 struct sk_buff *nci_spi_read(struct nci_spi *nspi)  in nci_spi_read()  argument
284 	skb = __nci_spi_read(nspi);  in nci_spi_read()
288 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in nci_spi_read()
290 			send_acknowledge(nspi, ACKNOWLEDGE_NACK);  in nci_spi_read()
297 		nspi->req_result = nci_spi_get_ack(skb);  in nci_spi_read()
298 		if (nspi->req_result)  in nci_spi_read()
299 			complete(&nspi->req_completion);  in nci_spi_read()
311 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED)  in nci_spi_read()
312 		send_acknowledge(nspi, ACKNOWLEDGE_ACK);  in nci_spi_read()