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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/mips/include/asm/txx9/dmac.h
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--arch/mips/include/asm/txx9/dmac.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/include/asm/txx9/dmac.h b/arch/mips/include/asm/txx9/dmac.h
new file mode 100644
index 000000000..b47ef5fe7
--- /dev/null
+++ b/arch/mips/include/asm/txx9/dmac.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * TXx9 SoC DMA Controller
+ */
+
+#ifndef __ASM_TXX9_DMAC_H
+#define __ASM_TXX9_DMAC_H
+
+#include <linux/dmaengine.h>
+
+#define TXX9_DMA_MAX_NR_CHANNELS 4
+
+/**
+ * struct txx9dmac_platform_data - Controller configuration parameters
+ * @memcpy_chan: Channel used for DMA_MEMCPY
+ * @have_64bit_regs: DMAC have 64 bit registers
+ */
+struct txx9dmac_platform_data {
+ int memcpy_chan;
+ bool have_64bit_regs;
+};
+
+/**
+ * struct txx9dmac_chan_platform_data - Channel configuration parameters
+ * @dmac_dev: A platform device for DMAC
+ */
+struct txx9dmac_chan_platform_data {
+ struct platform_device *dmac_dev;
+};
+
+/**
+ * struct txx9dmac_slave - Controller-specific information about a slave
+ * @tx_reg: physical address of data register used for
+ * memory-to-peripheral transfers
+ * @rx_reg: physical address of data register used for
+ * peripheral-to-memory transfers
+ * @reg_width: peripheral register width
+ */
+struct txx9dmac_slave {
+ u64 tx_reg;
+ u64 rx_reg;
+ unsigned int reg_width;
+};
+
+void txx9_dmac_init(int id, unsigned long baseaddr, int irq,
+ const struct txx9dmac_platform_data *pdata);
+
+#endif /* __ASM_TXX9_DMAC_H */