(Patches split per file for review, will be a single commit alongside
SDIO ids once review is complete. See cover letter for more
information)

Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
---
 drivers/net/wireless/morsemicro/mm81x/core.c | 146 +++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 drivers/net/wireless/morsemicro/mm81x/core.c

diff --git a/drivers/net/wireless/morsemicro/mm81x/core.c b/drivers/net/wireless/morsemicro/mm81x/core.c
new file mode 100644
index 000000000000..b08f52921525
--- /dev/null
+++ b/drivers/net/wireless/morsemicro/mm81x/core.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2017-2026 Morse Micro
+ */
+#include <linux/module.h>
+#include "core.h"
+#include "bus.h"
+#include "hif.h"
+#include "mac.h"
+
+char board_config_file[BCF_SIZE_MAX] = "";
+module_param_string(bcf, board_config_file, BCF_SIZE_MAX, 0644);
+MODULE_PARM_DESC(bcf, "BCF filename to load");
+
+static int mm81x_core_attach_regs(struct mm81x *mors)
+{
+	int ret = 0;
+
+	mm81x_claim_bus(mors);
+	ret = mm81x_reg32_read(mors, MM8108_REG_CHIP_ID, &mors->chip_id);
+	mm81x_release_bus(mors);
+
+	if (ret < 0) {
+		dev_err(mors->dev, "failed to read chip id %d", ret);
+		return ret;
+	}
+
+	switch (mors->chip_id) {
+	case (MM8108B2_ID):
+		mors->regs = &mm8108_regs;
+		mors->hif.ops = &mm81x_yaps_ops;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	return ret;
+}
+
+static char *mm81x_core_get_revision_string(u32 chip_id)
+{
+	u8 chip_rev = MM81X_DEVICE_GET_CHIP_REV(chip_id);
+
+	switch (chip_rev) {
+	case MM8108B2_REV:
+		return MM8108B2_REV_STRING;
+	default:
+		return "??";
+	}
+}
+
+static void mm81x_core_init_mac_addr(struct mm81x *mors)
+{
+	int ret = mm81x_hw_otp_get_mac_addr(mors);
+
+	if (ret || !is_valid_ether_addr(mors->macaddr))
+		eth_random_addr(mors->macaddr);
+}
+
+char *mm81x_core_get_fw_path(u32 chip_id)
+{
+	return kasprintf(GFP_KERNEL,
+			 MM81X_FW_DIR "/" MM8108_FW_BASE
+				      "%s" FW_ROM_LINKED_STRING MM81X_FW_EXT,
+			 mm81x_core_get_revision_string(chip_id));
+}
+EXPORT_SYMBOL_GPL(mm81x_core_get_fw_path);
+
+struct mm81x *mm81x_core_alloc(size_t priv_size, struct device *dev)
+{
+	return mm81x_mac_alloc(priv_size, dev);
+}
+EXPORT_SYMBOL_GPL(mm81x_core_alloc);
+
+int mm81x_core_init(struct mm81x *mors)
+{
+	int ret;
+
+	set_bit(MM81X_STATE_CHIP_UNRESPONSIVE, &mors->state_flags);
+	set_bit(MM81X_STATE_RELOAD_FW_AFTER_START, &mors->state_flags);
+
+	mm81x_core_init_mac_addr(mors);
+
+	ret = mm81x_core_attach_regs(mors);
+	if (ret)
+		return ret;
+
+	mors->chip_wq = create_singlethread_workqueue("chip_wq");
+	if (!mors->chip_wq)
+		return -ENOMEM;
+
+	mors->net_wq = create_singlethread_workqueue("net_wq");
+	if (!mors->net_wq) {
+		ret = -ENOMEM;
+		goto err_chip_wq;
+	}
+
+	ret = mm81x_hif_init(mors);
+	if (ret)
+		goto err_wqs;
+
+	return 0;
+
+err_wqs:
+	flush_workqueue(mors->net_wq);
+	destroy_workqueue(mors->net_wq);
+
+err_chip_wq:
+	flush_workqueue(mors->chip_wq);
+	destroy_workqueue(mors->chip_wq);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(mm81x_core_init);
+
+int mm81x_core_register(struct mm81x *mors)
+{
+	return mm81x_mac_register(mors);
+}
+EXPORT_SYMBOL_GPL(mm81x_core_register);
+
+void mm81x_core_unregister(struct mm81x *mors)
+{
+	mm81x_mac_unregister(mors);
+}
+EXPORT_SYMBOL_GPL(mm81x_core_unregister);
+
+void mm81x_core_deinit(struct mm81x *mors)
+{
+	mm81x_hif_finish(mors);
+	flush_workqueue(mors->net_wq);
+	destroy_workqueue(mors->net_wq);
+	flush_workqueue(mors->chip_wq);
+	destroy_workqueue(mors->chip_wq);
+}
+EXPORT_SYMBOL_GPL(mm81x_core_deinit);
+
+void mm81x_core_free(struct mm81x *mors)
+{
+	mm81x_mac_free(mors);
+}
+EXPORT_SYMBOL_GPL(mm81x_core_free);
+
+MODULE_AUTHOR("Morse Micro");
+MODULE_DESCRIPTION("Driver support for Morse Micro MM81X core");
+MODULE_LICENSE("Dual BSD/GPL");
-- 
2.43.0