33 struct spi_xcomm {  struct
44 static int spi_xcomm_sync_config(struct spi_xcomm *spi_xcomm, unsigned int len)  in spi_xcomm_sync_config()  argument
47 	uint8_t *buf = spi_xcomm->buf;  in spi_xcomm_sync_config()
49 	settings = spi_xcomm->settings;  in spi_xcomm_sync_config()
54 	put_unaligned_be16(spi_xcomm->chipselect, &buf[3]);  in spi_xcomm_sync_config()
56 	return i2c_master_send(spi_xcomm->i2c, buf, 5);  in spi_xcomm_sync_config()
59 static void spi_xcomm_chipselect(struct spi_xcomm *spi_xcomm,  in spi_xcomm_chipselect()  argument
63 	uint16_t chipselect = spi_xcomm->chipselect;  in spi_xcomm_chipselect()
70 	spi_xcomm->chipselect = chipselect;  in spi_xcomm_chipselect()
73 static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm,  in spi_xcomm_setup_transfer()  argument
79 	if (t->speed_hz != spi_xcomm->current_speed) {  in spi_xcomm_setup_transfer()
90 		spi_xcomm->current_speed = t->speed_hz;  in spi_xcomm_setup_transfer()
111 static int spi_xcomm_txrx_bufs(struct spi_xcomm *spi_xcomm,  in spi_xcomm_txrx_bufs()  argument
117 		spi_xcomm->buf[0] = SPI_XCOMM_CMD_WRITE;  in spi_xcomm_txrx_bufs()
118 		memcpy(spi_xcomm->buf + 1, t->tx_buf, t->len);  in spi_xcomm_txrx_bufs()
120 		ret = i2c_master_send(spi_xcomm->i2c, spi_xcomm->buf, t->len + 1);  in spi_xcomm_txrx_bufs()
126 		ret = i2c_master_recv(spi_xcomm->i2c, t->rx_buf, t->len);  in spi_xcomm_txrx_bufs()
139 	struct spi_xcomm *spi_xcomm = spi_master_get_devdata(master);  in spi_xcomm_transfer_one()  local
140 	unsigned int settings = spi_xcomm->settings;  in spi_xcomm_transfer_one()
148 	spi_xcomm_chipselect(spi_xcomm, spi, true);  in spi_xcomm_transfer_one()
157 		status = spi_xcomm_setup_transfer(spi_xcomm, spi, t, &settings);  in spi_xcomm_transfer_one()
170 			spi_xcomm->settings = settings;  in spi_xcomm_transfer_one()
171 			status = spi_xcomm_sync_config(spi_xcomm, t->len);  in spi_xcomm_transfer_one()
174 		} else if (settings != spi_xcomm->settings || is_first) {  in spi_xcomm_transfer_one()
175 			spi_xcomm->settings = settings;  in spi_xcomm_transfer_one()
176 			status = spi_xcomm_sync_config(spi_xcomm, 0);  in spi_xcomm_transfer_one()
182 			status = spi_xcomm_txrx_bufs(spi_xcomm, spi, t);  in spi_xcomm_transfer_one()
199 		spi_xcomm_chipselect(spi_xcomm, spi, false);  in spi_xcomm_transfer_one()
210 	struct spi_xcomm *spi_xcomm;  in spi_xcomm_probe()  local
214 	master = spi_alloc_master(&i2c->dev, sizeof(*spi_xcomm));  in spi_xcomm_probe()
218 	spi_xcomm = spi_master_get_devdata(master);  in spi_xcomm_probe()
219 	spi_xcomm->i2c = i2c;  in spi_xcomm_probe()