1 files changed, 0 insertions, 56 deletions
diff --git a/libhw/rp2040_dma.c b/libhw/rp2040_dma.c
deleted file mode 100644
index dfbf136..0000000
--- a/libhw/rp2040_dma.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* libhw/rp2040_dma.c - Utilities for sharing the DMA IRQs
- *
- * Copyright (C) 2025  Luke T. Shumaker <lukeshu@lukeshu.com>
- * SPDX-License-Identifier: AGPL-3.0-or-later
- */
-
-#include <stdbool.h>
-
-#include <hardware/irq.h> /* for irq_set_exclusive_handler() */
-
-#include "rp2040_dma.h"
-
-struct dmairq_handler_entry {
-	dmairq_handler_t         fn;
-	void                    *arg;
-};
-struct dmairq_handler_entry dmairq_handlers[NUM_DMA_CHANNELS] = {0};
-
-bool dmairq_initialized[NUM_DMA_IRQS] = {0};
-
-static void dmairq_handler(void) {
-	enum dmairq irq = __get_current_exception() - VTABLE_FIRST_IRQ;
-	size_t irq_idx = irq - DMAIRQ_0;
-	assert(irq_idx < NUM_DMA_IRQS);
-
-	uint32_t regval = dma_hw->irq_ctrl[irq_idx].ints;
-	for (uint channel = 0; channel < NUM_DMA_CHANNELS; channel++) {
-		if (regval & 1u<<channel) {
-			struct dmairq_handler_entry *handler = &dmairq_handlers[channel];
-			if (handler->fn)
-				handler->fn(handler->arg, irq, channel);
-		}
-	}
-	/* acknowledge irq */
-	dma_hw->intr = regval;
-}
-
-void dmairq_set_and_enable_exclusive_handler(enum dmairq irq, uint channel, dmairq_handler_t fn, void *arg) {
-	assert(irq == DMAIRQ_0 || irq == DMAIRQ_1);
-	assert(channel < NUM_DMA_CHANNELS);
-	assert(fn);
-
-	assert(dmairq_handlers[channel].fn == NULL);
-
-	dmairq_handlers[channel].fn = fn;
-	dmairq_handlers[channel].arg = arg;
-
-	size_t irq_idx = irq - DMAIRQ_0;
-	hw_set_bits(&dma_hw->irq_ctrl[irq_idx].inte, 1u<<channel);
-
-	if (!dmairq_initialized[irq_idx]) {
-		irq_set_exclusive_handler(irq, dmairq_handler);
-		irq_set_enabled(irq, true);
-		dmairq_initialized[irq_idx] = true;
-	}
-}