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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-17 09:55:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-17 09:55:43 -0700
commit47ebe00b684c2bc183a766bc33c8b5943bc0df85 (patch)
treec0f155acc5623f6990d20b7a623f48f5e7aa0f61 /include/linux/dma
parentfa121bb3fed6313b1f0af23952301e06cf6d32ed (diff)
parent5c274ca4cfb22a455e880f61536b1894fa29fd17 (diff)
Merge tag 'dmaengine-5.3-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul: - Add support in dmaengine core to do device node checks for DT devices and update bunch of drivers to use that and remove open coding from drivers - New driver/driver support for new hardware, namely: - MediaTek UART APDMA - Freescale i.mx7ulp edma2 - Synopsys eDMA IP core version 0 - Allwinner H6 DMA - Updates to axi-dma and support for interleaved cyclic transfers - Greg's debugfs return value check removals on drivers - Updates to stm32-dma, hsu, dw, pl330, tegra drivers * tag 'dmaengine-5.3-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (68 commits) dmaengine: Revert "dmaengine: fsl-edma: add i.mx7ulp edma2 version support" dmaengine: at_xdmac: check for non-empty xfers_list before invoking callback Documentation: dmaengine: clean up description of dmatest usage dmaengine: tegra210-adma: remove PM_CLK dependency dmaengine: fsl-edma: add i.mx7ulp edma2 version support dt-bindings: dma: fsl-edma: add new i.mx7ulp-edma dmaengine: fsl-edma-common: version check for v2 instead dmaengine: fsl-edma-common: move dmamux register to another single function dmaengine: fsl-edma: add drvdata for fsl-edma dmaengine: Revert "dmaengine: fsl-edma: support little endian for edma driver" dmaengine: rcar-dmac: Reject zero-length slave DMA requests dmaengine: dw: Enable iDMA 32-bit on Intel Elkhart Lake dmaengine: dw-edma: fix semicolon.cocci warnings dmaengine: sh: usb-dmac: Use [] to denote a flexible array member dmaengine: dmatest: timeout value of -1 should specify infinite wait dmaengine: dw: Distinguish ->remove() between DW and iDMA 32-bit dmaengine: fsl-edma: support little endian for edma driver dmaengine: hsu: Revert "set HSU_CH_MTSR to memory width" dmagengine: pl330: add code to get reset property dt-bindings: pl330: document the optional resets property ...
Diffstat (limited to 'include/linux/dma')
-rw-r--r--include/linux/dma/edma.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
new file mode 100644
index 000000000000..cab6e18773da
--- /dev/null
+++ b/include/linux/dma/edma.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018-2019 Synopsys, Inc. and/or its affiliates.
+ * Synopsys DesignWare eDMA core driver
+ *
+ * Author: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
+ */
+
+#ifndef _DW_EDMA_H
+#define _DW_EDMA_H
+
+#include <linux/device.h>
+#include <linux/dmaengine.h>
+
+struct dw_edma;
+
+/**
+ * struct dw_edma_chip - representation of DesignWare eDMA controller hardware
+ * @dev: struct device of the eDMA controller
+ * @id: instance ID
+ * @irq: irq line
+ * @dw: struct dw_edma that is filed by dw_edma_probe()
+ */
+struct dw_edma_chip {
+ struct device *dev;
+ int id;
+ int irq;
+ struct dw_edma *dw;
+};
+
+/* Export to the platform drivers */
+#if IS_ENABLED(CONFIG_DW_EDMA)
+int dw_edma_probe(struct dw_edma_chip *chip);
+int dw_edma_remove(struct dw_edma_chip *chip);
+#else
+static inline int dw_edma_probe(struct dw_edma_chip *chip)
+{
+ return -ENODEV;
+}
+
+static inline int dw_edma_remove(struct dw_edma_chip *chip)
+{
+ return 0;
+}
+#endif /* CONFIG_DW_EDMA */
+
+#endif /* _DW_EDMA_H */