linux-kernel - [PATCH v5 0/6] dmaengine: sh: rz-dmac: Add tx

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Message-ID: <20251217135213.400280-1-claudiu.beznea.uj@bp.renesas.com>
Date: Wed, 17 Dec 2025 15:52:07 +0200
From: Claudiu <claudiu.beznea@...on.dev>
To: vkoul@...nel.org,
	fabrizio.castro.jz@...esas.com,
	biju.das.jz@...renesas.com,
	geert+renesas@...der.be,
	prabhakar.mahadev-lad.rj@...renesas.com
Cc: claudiu.beznea@...on.dev,
	dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v5 0/6] dmaengine: sh: rz-dmac: Add tx_status and pause/resume support

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Hi,

Series adds tx_status and pause/resume support for the rz-dmac driver.
Along with it were added fixes identified while working on the above
mentioned enhancements.

Previous versions were addressed by Biju. The previous versions were
posted here:

v4: https://lore.kernel.org/all/20240628151728.84470-1-biju.das.jz@bp.renesas.com/
v3: https://lore.kernel.org/all/20230412152445.117439-1-biju.das.jz@bp.renesas.com/
v2: https://lore.kernel.org/all/20230405140842.201883-1-biju.das.jz@bp.renesas.com/
v1: https://lore.kernel.org/all/20230324094957.115071-1-biju.das.jz@bp.renesas.com/

Changes in v5:
- added patches
-- dmaengine: sh: rz-dmac: Add rz_dmac_invalidate_lmdesc()
-- dmaengine: sh: rz-dmac: Protect the driver specific lists
-- dmaengine: sh: rz-dmac: Move all CHCTRL updates under spinlock
-- dmaengine: sh: rz-dmac: Drop unnecessary local_irq_save() call
-- dmaengine: sh: rz-dmac: Add device_{pause,resume}() callbacks
-- dmaengine: sh: rz-dmac: Add rz_dmac_invalidate_lmdesc()
- for pause/resume used the DMA controller support to pause/resume
  transfers compared with previous versions
- adjusted patches:
-- dmaengine: sh: rz-dmac: Add device_tx_status() callback

Thank you,
Claudiu


Biju Das (2):
  dmaengine: sh: rz-dmac: Add rz_dmac_invalidate_lmdesc()
  dmaengine: sh: rz-dmac: Add device_tx_status() callback

Claudiu Beznea (4):
  dmaengine: sh: rz-dmac: Protect the driver specific lists
  dmaengine: sh: rz-dmac: Move all CHCTRL updates under spinlock
  dmaengine: sh: rz-dmac: Drop unnecessary local_irq_save() call
  dmaengine: sh: rz-dmac: Add device_{pause,resume}() callbacks

 drivers/dma/sh/rz-dmac.c | 265 ++++++++++++++++++++++++++++++++-------
 1 file changed, 222 insertions(+), 43 deletions(-)

-- 
2.43.0