1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c
new file mode 100644
index 000000000000..b893d8009448
--- /dev/null
+++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd_crc.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* CAN bus driver for Microchip 25XXFD CAN Controller with SPI Interface
+ *
+ * Copyright 2019 Martin Sperl <kernel@martin.sperl.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include "mcp25xxfd_cmd.h"
+#include "mcp25xxfd_crc.h"
+#include "mcp25xxfd_regs.h"
+#include "mcp25xxfd_priv.h"
+
+int mcp25xxfd_crc_enable_int(struct mcp25xxfd_priv *priv, bool enable)
+{
+	u32 mask = MCP25XXFD_CRC_CRCERRIE | MCP25XXFD_CRC_FERRIE;
+
+	priv->regs.crc &= ~mask;
+	priv->regs.crc |= enable ? mask : 0;
+
+	return mcp25xxfd_cmd_write_mask(priv->spi, MCP25XXFD_CRC,
+					priv->regs.crc, mask);
+}
+
+int mcp25xxfd_crc_clear_int(struct mcp25xxfd_priv *priv)
+{
+	return mcp25xxfd_cmd_write_mask(priv->spi, MCP25XXFD_CRC, 0,
+					MCP25XXFD_CRC_CRCERRIF |
+					MCP25XXFD_CRC_FERRIF);
+}