175 static inline void spi_use_out(struct spi_trans *trans, unsigned bytes)  in spi_use_out()  argument
177 	trans->out += bytes;  in spi_use_out()
178 	trans->bytesout -= bytes;  in spi_use_out()
181 static inline void spi_use_in(struct spi_trans *trans, unsigned bytes)  in spi_use_in()  argument
183 	trans->in += bytes;  in spi_use_in()
184 	trans->bytesin -= bytes;  in spi_use_in()
217 static void spi_setup_type(struct spi_trans *trans, int data_bytes)  in spi_setup_type()  argument
219 	trans->type = 0xFF;  in spi_setup_type()
222 	if (trans->bytesin == 0) {  in spi_setup_type()
223 		if (trans->bytesout + data_bytes > 4)  in spi_setup_type()
229 			trans->type = SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS;  in spi_setup_type()
231 			trans->type = SPI_OPCODE_TYPE_WRITE_NO_ADDRESS;  in spi_setup_type()
235 	if (trans->bytesout == 1) {	/* and bytesin is > 0 */  in spi_setup_type()
236 		trans->type = SPI_OPCODE_TYPE_READ_NO_ADDRESS;  in spi_setup_type()
240 	if (trans->bytesout == 4)	/* and bytesin is > 0 */  in spi_setup_type()
241 		trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS;  in spi_setup_type()
244 	if (trans->out[0] == SPI_OPCODE_FAST_READ && trans->bytesout == 5) {  in spi_setup_type()
245 		trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS;  in spi_setup_type()
246 		--trans->bytesout;  in spi_setup_type()
250 static int spi_setup_opcode(struct ich_spi_priv *ctlr, struct spi_trans *trans,  in spi_setup_opcode()  argument
256 	trans->opcode = trans->out[0];  in spi_setup_opcode()
257 	spi_use_out(trans, 1);  in spi_setup_opcode()
260 		ich_writeb(ctlr, trans->opcode, ctlr->opmenu);  in spi_setup_opcode()
262 		optypes = (optypes & 0xfffc) | (trans->type & 0x3);  in spi_setup_opcode()
271 		if (trans->opcode == SPI_OPCODE_WREN)  in spi_setup_opcode()
277 			if (opmenu[opcode_index] == trans->opcode)  in spi_setup_opcode()
283 			       trans->opcode);  in spi_setup_opcode()
289 		if (trans->type == SPI_OPCODE_TYPE_WRITE_NO_ADDRESS &&  in spi_setup_opcode()
291 		    trans->bytesout >= 3) {  in spi_setup_opcode()
293 			trans->type = optype;  in spi_setup_opcode()
295 		if (optype != trans->type) {  in spi_setup_opcode()
304 static int spi_setup_offset(struct spi_trans *trans)  in spi_setup_offset()  argument
307 	switch (trans->type) {  in spi_setup_offset()
313 		trans->offset = ((uint32_t)trans->out[0] << 16) |  in spi_setup_offset()
314 				((uint32_t)trans->out[1] << 8) |  in spi_setup_offset()
315 				((uint32_t)trans->out[2] << 0);  in spi_setup_offset()
316 		spi_use_out(trans, 3);  in spi_setup_offset()
319 		printf("Unrecognized SPI transaction type %#x\n", trans->type);  in spi_setup_offset()
380 	struct spi_trans *trans = &ctlr->trans;  in ich_spi_xfer()  local
397 		memset(trans, '\0', sizeof(*trans));  in ich_spi_xfer()
405 		memcpy(trans->cmd, dout, bytes);  in ich_spi_xfer()
406 		trans->cmd_len = bytes;  in ich_spi_xfer()
418 	if (trans->cmd_len) {  in ich_spi_xfer()
419 		trans->out = trans->cmd;  in ich_spi_xfer()
420 		trans->bytesout = trans->cmd_len;  in ich_spi_xfer()
422 		debug_trace("ICH SPI: Using %d bytes\n", trans->cmd_len);  in ich_spi_xfer()
424 		trans->out = dout;  in ich_spi_xfer()
425 		trans->bytesout = dout ? bytes : 0;  in ich_spi_xfer()
428 	trans->in = din;  in ich_spi_xfer()
429 	trans->bytesin = din ? bytes : 0;  in ich_spi_xfer()
432 	if (!trans->bytesout) {  in ich_spi_xfer()
446 	spi_setup_type(trans, using_cmd ? bytes : 0);  in ich_spi_xfer()
447 	opcode_index = spi_setup_opcode(ctlr, trans, lock);  in ich_spi_xfer()
450 	with_address = spi_setup_offset(trans);  in ich_spi_xfer()
454 	if (trans->opcode == SPI_OPCODE_WREN) {  in ich_spi_xfer()
461 			ich_writew(ctlr, trans->opcode, ctlr->preop);  in ich_spi_xfer()
478 		trans->out = dout;  in ich_spi_xfer()
479 		trans->bytesout = bytes;  in ich_spi_xfer()
490 	if (!trans->bytesout && !trans->bytesin) {  in ich_spi_xfer()
493 			ich_writel(ctlr, trans->offset & 0x00FFFFFF,  in ich_spi_xfer()
524 	if (trans->bytesout > ctlr->databytes) {  in ich_spi_xfer()
533 	while (trans->bytesout || trans->bytesin) {  in ich_spi_xfer()
537 		ich_writel(ctlr, trans->offset & 0x00FFFFFF, ctlr->addr);  in ich_spi_xfer()
539 		if (trans->bytesout)  in ich_spi_xfer()
540 			data_length = min(trans->bytesout, ctlr->databytes);  in ich_spi_xfer()
542 			data_length = min(trans->bytesin, ctlr->databytes);  in ich_spi_xfer()
545 		if (trans->bytesout) {  in ich_spi_xfer()
546 			write_reg(ctlr, trans->out, ctlr->data, data_length);  in ich_spi_xfer()
547 			spi_use_out(trans, data_length);  in ich_spi_xfer()
549 				trans->offset += data_length;  in ich_spi_xfer()
570 		if (trans->bytesin) {  in ich_spi_xfer()
571 			read_reg(ctlr, ctlr->data, trans->in, data_length);  in ich_spi_xfer()
572 			spi_use_in(trans, data_length);  in ich_spi_xfer()
574 				trans->offset += data_length;  in ich_spi_xfer()