drivers/dma/tegra186-gpc-dma.c

239 	struct tegra_dma_desc *dma_desc;
473 	struct tegra_dma_desc *dma_desc = tdc->dma_desc;
478 	dma_desc->sg_idx++;
481 	if (dma_desc->sg_idx == dma_desc->sg_count)
482 		dma_desc->sg_idx = 0;
493 	ch_regs = &dma_desc->sg_req[dma_desc->sg_idx].ch_regs;
507 	struct tegra_dma_desc *dma_desc = tdc->dma_desc;
511 	if (!dma_desc) {
516 		dma_desc = vd_to_tegra_dma_desc(vdesc);
518 		dma_desc->tdc = tdc;
519 		tdc->dma_desc = dma_desc;
524 	ch_regs = &dma_desc->sg_req[dma_desc->sg_idx].ch_regs;
543 	vchan_cookie_complete(&tdc->dma_desc->vd);
546 	tdc->dma_desc = NULL;
593 	struct tegra_dma_desc *dma_desc = tdc->dma_desc;
613 	if (!dma_desc)
616 	sg_req = dma_desc->sg_req;
617 	dma_desc->bytes_xfer += sg_req[dma_desc->sg_idx].len;
619 	if (dma_desc->cyclic) {
620 		vchan_cyclic_callback(&dma_desc->vd);
623 		dma_desc->sg_idx++;
624 		if (dma_desc->sg_idx == dma_desc->sg_count)
640 	if (tdc->dma_desc)
654 	if (tdc->dma_desc && tdc->dma_desc->cyclic)
707 	if (tdc->dma_desc) {
714 		vchan_terminate_vdesc(&tdc->dma_desc->vd);
716 		tdc->dma_desc = NULL;
730 	struct tegra_dma_desc *dma_desc = tdc->dma_desc;
731 	struct tegra_dma_sg_req *sg_req = dma_desc->sg_req;
746 	bytes_xfer = dma_desc->bytes_xfer +
747 		     sg_req[dma_desc->sg_idx].len - (wcount * 4);
749 	if (dma_desc->bytes_req == bytes_xfer)
752 	residual = dma_desc->bytes_req - (bytes_xfer % dma_desc->bytes_req);
762 	struct tegra_dma_desc *dma_desc;
775 		dma_desc = vd_to_tegra_dma_desc(vd);
776 		residual = dma_desc->bytes_req;
778 	} else if (tdc->dma_desc && tdc->dma_desc->vd.tx.cookie == cookie) {
865 	struct tegra_dma_desc *dma_desc;
901 	dma_desc = kzalloc(struct_size(dma_desc, sg_req, 1), GFP_NOWAIT);
902 	if (!dma_desc)
905 	dma_desc->bytes_req = len;
906 	dma_desc->sg_count = 1;
907 	sg_req = dma_desc->sg_req;
921 	dma_desc->cyclic = false;
922 	return vchan_tx_prep(&tdc->vc, &dma_desc->vd, flags);
931 	struct tegra_dma_desc *dma_desc;
970 	dma_desc = kzalloc(struct_size(dma_desc, sg_req, 1), GFP_NOWAIT);
971 	if (!dma_desc)
974 	dma_desc->bytes_req = len;
975 	dma_desc->sg_count = 1;
976 	sg_req = dma_desc->sg_req;
991 	dma_desc->cyclic = false;
992 	return vchan_tx_prep(&tdc->vc, &dma_desc->vd, flags);
1005 	struct tegra_dma_desc *dma_desc;
1063 	dma_desc = kzalloc(struct_size(dma_desc, sg_req, sg_len), GFP_NOWAIT);
1064 	if (!dma_desc)
1067 	dma_desc->sg_count = sg_len;
1068 	sg_req = dma_desc->sg_req;
1081 			kfree(dma_desc);
1086 		dma_desc->bytes_req += len;
1111 	dma_desc->cyclic = false;
1112 	return vchan_tx_prep(&tdc->vc, &dma_desc->vd, flags);
1124 	struct tegra_dma_desc *dma_desc;
1198 	dma_desc = kzalloc(struct_size(dma_desc, sg_req, period_count),
1200 	if (!dma_desc)
1203 	dma_desc->bytes_req = buf_len;
1204 	dma_desc->sg_count = period_count;
1205 	sg_req = dma_desc->sg_req;
1234 	dma_desc->cyclic = true;
1236 	return vchan_tx_prep(&tdc->vc, &dma_desc->vd, flags);
1496 		if (tdc->dma_desc) {