drivers/spi/spi-mem.c

528 static ssize_t spi_mem_no_dirmap_read(struct spi_mem_dirmap_desc *desc,
531 	struct spi_mem_op op = desc->info.op_tmpl;
534 	op.addr.val = desc->info.offset + offs;
537 	ret = spi_mem_adjust_op_size(desc->mem, &op);
541 	ret = spi_mem_exec_op(desc->mem, &op);
548 static ssize_t spi_mem_no_dirmap_write(struct spi_mem_dirmap_desc *desc,
551 	struct spi_mem_op op = desc->info.op_tmpl;
554 	op.addr.val = desc->info.offset + offs;
557 	ret = spi_mem_adjust_op_size(desc->mem, &op);
561 	ret = spi_mem_exec_op(desc->mem, &op);
586 	struct spi_mem_dirmap_desc *desc;
597 	desc = kzalloc(sizeof(*desc), GFP_KERNEL);
598 	if (!desc)
601 	desc->mem = mem;
602 	desc->info = *info;
604 		ret = ctlr->mem_ops->dirmap_create(desc);
607 		desc->nodirmap = true;
608 		if (!spi_mem_supports_op(desc->mem, &desc->info.op_tmpl))
615 		kfree(desc);
619 	return desc;
625  * @desc: the direct mapping descriptor to destroy
630 void spi_mem_dirmap_destroy(struct spi_mem_dirmap_desc *desc)
632 	struct spi_controller *ctlr = desc->mem->spi->controller;
634 	if (!desc->nodirmap && ctlr->mem_ops && ctlr->mem_ops->dirmap_destroy)
635 		ctlr->mem_ops->dirmap_destroy(desc);
637 	kfree(desc);
643 	struct spi_mem_dirmap_desc *desc = *(struct spi_mem_dirmap_desc **)res;
645 	spi_mem_dirmap_destroy(desc);
651  * @dev: device the dirmap desc will be attached to
664 	struct spi_mem_dirmap_desc **ptr, *desc;
671 	desc = spi_mem_dirmap_create(mem, info);
672 	if (IS_ERR(desc)) {
675 		*ptr = desc;
679 	return desc;
696  * @dev: device the dirmap desc is attached to
697  * @desc: the direct mapping descriptor to destroy
703 				 struct spi_mem_dirmap_desc *desc)
706 		       devm_spi_mem_dirmap_match, desc);
712  * @desc: direct mapping descriptor
726 ssize_t spi_mem_dirmap_read(struct spi_mem_dirmap_desc *desc,
729 	struct spi_controller *ctlr = desc->mem->spi->controller;
732 	if (desc->info.op_tmpl.data.dir != SPI_MEM_DATA_IN)
738 	if (desc->nodirmap) {
739 		ret = spi_mem_no_dirmap_read(desc, offs, len, buf);
741 		ret = spi_mem_access_start(desc->mem);
745 		ret = ctlr->mem_ops->dirmap_read(desc, offs, len, buf);
747 		spi_mem_access_end(desc->mem);
758  * @desc: direct mapping descriptor
772 ssize_t spi_mem_dirmap_write(struct spi_mem_dirmap_desc *desc,
775 	struct spi_controller *ctlr = desc->mem->spi->controller;
778 	if (desc->info.op_tmpl.data.dir != SPI_MEM_DATA_OUT)
784 	if (desc->nodirmap) {
785 		ret = spi_mem_no_dirmap_write(desc, offs, len, buf);
787 		ret = spi_mem_access_start(desc->mem);
791 		ret = ctlr->mem_ops->dirmap_write(desc, offs, len, buf);
793 		spi_mem_access_end(desc->mem);