[PATCH v2 0/5] dma: fsl/mcf-edma: Bug fixes and enhancements for ColdFire support

Jean-Michel Hautbois via B4 Relay
2025-11-26T08:36:04Z

This series addresses several bugs in the fsl-edma and mcf-edma drivers
affecting MCF54418 ColdFire processors.

Patch 1 adds the FSL_EDMA_DRV_MCF flag to fix byte-lane addressing for
MCF54418.

Patch 2 adds per-channel IRQ naming for easier debugging.

Patches 3-5 fix the interrupt and error handlers for all 64 DMA
channels:
- Patch 3 fixes the interrupt handler to process all 64 channels
- Patch 4 moves the error handler out of the header file for clarity
- Patch 5 fixes the error handler for all 64 channels with proper types

Tested on a custom MCF54418-based platform with slave DMA transfers.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>
---
Changes in v2:
- Check devm_kasprintf() return value
- Keep request_irq on one line in naming patch
- Remove non needed memory barrier
- Remove the interleave patch for now
- Link to v1: https://lore.kernel.org/r/20251124-dma-coldfire-v1-0-dc8f93185464@yoseli.org

---
Jean-Michel Hautbois (5):
dma: fsl-edma: Add FSL_EDMA_DRV_MCF flag for ColdFire eDMA
dma: mcf-edma: Add per-channel IRQ naming for debugging
dma: mcf-edma: Fix interrupt handler for 64 DMA channels
dma: fsl-edma: Move error handler out of header file
dma: mcf-edma: Fix error handler for all 64 DMA channels

drivers/dma/fsl-edma-common.c | 5 +++
drivers/dma/fsl-edma-common.h | 11 +++----
drivers/dma/mcf-edma-main.c | 72 +++++++++++++++++++++++++------------------
3 files changed, 52 insertions(+), 36 deletions(-)
---
base-commit: ac3fd01e4c1efce8f2c054cdeb2ddd2fc0fb150d
change-id: 20251123-dma-coldfire-5f36aee143b3

Best regards,
--
Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>