linux-kernel - [PATCH v4 0/6] Fix support of dw-edma HDMA NATIVE IP in remote setup

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Message-Id: <20231011-b4-feature_hdma_mainline-v4-0-43d417b93138@bootlin.com>
Date:   Wed, 11 Oct 2023 16:16:56 +0200
From:   Kory Maincent <kory.maincent@...tlin.com>
To:     Manivannan Sadhasivam <mani@...nel.org>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Vinod Koul <vkoul@...nel.org>,
        Cai Huoqing <cai.huoqing@...ux.dev>
Cc:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        Herve Codina <herve.codina@...tlin.com>,
        Kory Maincent <kory.maincent@...tlin.com>,
        Manivannan Sadhasivam <mani@...nel.org>
Subject: [PATCH v4 0/6] Fix support of dw-edma HDMA NATIVE IP in remote
 setup

This patch series fix the support of dw-edma HDMA NATIVE IP.
I can only test it in remote HDMA IP setup with single dma transfer, but
with these fixes it works properly.

Few fixes has also been added for eDMA version. Similarly to HDMA I have
tested only eDMA in remote setup.

Changes in v2:
- Update comments and fix typos.
- Removed patches that tackle hypothetical bug and then were not pertinent.
- Add the similar HDMA race condition in remote setup fix to eDMA IP driver.

Changes in v3:
- Fix comment style.
- Split a patch in two to differ bug fix and simple harmless typo.

Changes in v4:
- Update patch git commit message.
- Link to v3: https://lore.kernel.org/r/20231011-b4-feature_hdma_mainline-v3-0-24ee0c979c6f@bootlin.com

Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
Kory Maincent (6):
      dmaengine: dw-edma: Fix the ch_count hdma callback
      dmaengine: dw-edma: Fix wrong interrupt bit set
      dmaengine: dw-edma: Typo fix
      dmaengine: dw-edma: Add HDMA remote interrupt configuration
      dmaengine: dw-edma: HDMA: Add sync read before starting the DMA transfer in remote setup
      dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup

 drivers/dma/dw-edma/dw-edma-v0-core.c | 17 +++++++++++++++
 drivers/dma/dw-edma/dw-hdma-v0-core.c | 39 +++++++++++++++++++++++------------
 drivers/dma/dw-edma/dw-hdma-v0-regs.h |  2 +-
 3 files changed, 44 insertions(+), 14 deletions(-)
---
base-commit: 8bf914570650ec5858e18554d70d2838cef01de1
change-id: 20231011-b4-feature_hdma_mainline-b6c57f8e3b5d

Best regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com