43 static int __nci_spi_send(struct nci_spi *nspi, struct sk_buff *skb,  in __nci_spi_send()  argument
60 	t.delay_usecs = nspi->xfer_udelay;  in __nci_spi_send()
61 	t.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_send()
66 	return spi_sync(nspi->spi, &m);  in __nci_spi_send()
69 int nci_spi_send(struct nci_spi *nspi,  in nci_spi_send()  argument
81 	hdr[1] = nspi->acknowledge_mode;  in nci_spi_send()
85 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in nci_spi_send()
95 		ret = __nci_spi_send(nspi, NULL, 1);  in nci_spi_send()
107 	ret = __nci_spi_send(nspi, skb, 0);  in nci_spi_send()
108 	if (ret != 0 || nspi->acknowledge_mode == NCI_SPI_CRC_DISABLED)  in nci_spi_send()
111 	reinit_completion(&nspi->req_completion);  in nci_spi_send()
113 							&nspi->req_completion,  in nci_spi_send()
116 	if (completion_rc <= 0 || nspi->req_result == ACKNOWLEDGE_NACK)  in nci_spi_send()
140 	struct nci_spi *nspi;  in nci_spi_allocate_spi()  local
142 	nspi = devm_kzalloc(&spi->dev, sizeof(struct nci_spi), GFP_KERNEL);  in nci_spi_allocate_spi()
143 	if (!nspi)  in nci_spi_allocate_spi()
146 	nspi->acknowledge_mode = acknowledge_mode;  in nci_spi_allocate_spi()
147 	nspi->xfer_udelay = delay;  in nci_spi_allocate_spi()
149 	nspi->xfer_speed_hz = 0;  in nci_spi_allocate_spi()
150 	nspi->spi = spi;  in nci_spi_allocate_spi()
151 	nspi->ndev = ndev;  in nci_spi_allocate_spi()
152 	init_completion(&nspi->req_completion);  in nci_spi_allocate_spi()
154 	return nspi;  in nci_spi_allocate_spi()
158 static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge)  in send_acknowledge()  argument
165 	skb = nci_skb_alloc(nspi->ndev, 0, GFP_KERNEL);  in send_acknowledge()
178 	ret = __nci_spi_send(nspi, skb, 0);  in send_acknowledge()
185 static struct sk_buff *__nci_spi_read(struct nci_spi *nspi)  in __nci_spi_read()  argument
198 	req[1] = nspi->acknowledge_mode;  in __nci_spi_read()
202 	tx.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_read()
209 	rx.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_read()
212 	ret = spi_sync(nspi->spi, &m);  in __nci_spi_read()
216 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED)  in __nci_spi_read()
222 	skb = nci_skb_alloc(nspi->ndev, rx_len, GFP_KERNEL);  in __nci_spi_read()
232 	rx.delay_usecs = nspi->xfer_udelay;  in __nci_spi_read()
233 	rx.speed_hz = nspi->xfer_speed_hz;  in __nci_spi_read()
236 	ret = spi_sync(nspi->spi, &m);  in __nci_spi_read()
240 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in __nci_spi_read()
290 struct sk_buff *nci_spi_read(struct nci_spi *nspi)  in nci_spi_read()  argument
295 	skb = __nci_spi_read(nspi);  in nci_spi_read()
299 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {  in nci_spi_read()
301 			send_acknowledge(nspi, ACKNOWLEDGE_NACK);  in nci_spi_read()
308 		nspi->req_result = nci_spi_get_ack(skb);  in nci_spi_read()
309 		if (nspi->req_result)  in nci_spi_read()
310 			complete(&nspi->req_completion);  in nci_spi_read()
322 	if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED)  in nci_spi_read()
323 		send_acknowledge(nspi, ACKNOWLEDGE_ACK);  in nci_spi_read()