From: Amelie Delaunay <amelie.delaunay@foss.st.com>
To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <dmaengine@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-hardening@vger.kernel.org>,
Amelie Delaunay <amelie.delaunay@foss.st.com>
Subject: [PATCH 00/12] Introduce STM32 DMA3 support
Date: Tue, 23 Apr 2024 14:32:50 +0200 [thread overview]
Message-ID: <20240423123302.1550592-1-amelie.delaunay@foss.st.com> (raw)
STM32 DMA3 is a direct memory access controller with different features
depending on its hardware configuration. It is either called LPDMA (Low
Power), GPDMA (General Purpose) or HPDMA (High Performance), and it can
be found in new STM32 MCUs and MPUs.
In STM32MP25 SoC [1], 3 HPDMAs and 1 LPDMA are embedded. Only HPDMAs are
used by Linux.
Before adding this new driver, this series gathers existing STM32 DMA
drivers and bindings under stm32/ subdirectory and adds an entry in
MAINTAINERS file.
To ease review, the initial "dmaengine: Add STM32 DMA3 support" has been
split into functionnalities.
Patches 6 to 9 can be squashed into patch 5.
Patch 10 has already been proposed [2], the API is now used in stm32-dma3
driver. Indeed, STM32 DMA3 channels can be individually reserved either
because they are secure, or dedicated to another CPU. These channels are
not registered in dmaengine, so id is not incremented, but, using the new
API to specify the channel name, channel name matches the name in the
Reference Manual and ease requesting a channel thanks to its name.
[1] https://www.st.com/resource/en/reference_manual/rm0457-stm32mp25xx-advanced-armbased-3264bit-mpus-stmicroelectronics.pdf
[2] https://lore.kernel.org/lkml/20231213174021.3074759-1-amelie.delaunay@foss.st.com/
Amelie Delaunay (12):
dt-bindings: dma: New directory for STM32 DMA controllers bindings
dmaengine: stm32: New directory for STM32 DMA controllers drivers
MAINTAINERS: Add entry for STM32 DMA controllers drivers and
documentation
dt-bindings: dma: Document STM32 DMA3 controller bindings
dmaengine: Add STM32 DMA3 support
dmaengine: stm32-dma3: add DMA_CYCLIC capability
dmaengine: stm32-dma3: add DMA_MEMCPY capability
dmaengine: stm32-dma3: add device_pause and device_resume ops
dmaengine: stm32-dma3: improve residue granularity
dmaengine: add channel device name to channel registration
dmaengine: stm32-dma3: defer channel registration to specify channel
name
arm64: dts: st: add HPDMA nodes on stm32mp251
.../dma/{ => stm32}/st,stm32-dma.yaml | 4 +-
.../bindings/dma/stm32/st,stm32-dma3.yaml | 125 ++
.../dma/{ => stm32}/st,stm32-dmamux.yaml | 4 +-
.../dma/{ => stm32}/st,stm32-mdma.yaml | 4 +-
MAINTAINERS | 9 +
arch/arm64/boot/dts/st/stm32mp251.dtsi | 69 +
drivers/dma/Kconfig | 34 +-
drivers/dma/Makefile | 4 +-
drivers/dma/dmaengine.c | 16 +-
drivers/dma/idxd/dma.c | 2 +-
drivers/dma/stm32/Kconfig | 47 +
drivers/dma/stm32/Makefile | 5 +
drivers/dma/{ => stm32}/stm32-dma.c | 2 +-
drivers/dma/stm32/stm32-dma3.c | 1838 +++++++++++++++++
drivers/dma/{ => stm32}/stm32-dmamux.c | 0
drivers/dma/{ => stm32}/stm32-mdma.c | 2 +-
include/linux/dmaengine.h | 3 +-
17 files changed, 2117 insertions(+), 51 deletions(-)
rename Documentation/devicetree/bindings/dma/{ => stm32}/st,stm32-dma.yaml (97%)
create mode 100644 Documentation/devicetree/bindings/dma/stm32/st,stm32-dma3.yaml
rename Documentation/devicetree/bindings/dma/{ => stm32}/st,stm32-dmamux.yaml (89%)
rename Documentation/devicetree/bindings/dma/{ => stm32}/st,stm32-mdma.yaml (96%)
create mode 100644 drivers/dma/stm32/Kconfig
create mode 100644 drivers/dma/stm32/Makefile
rename drivers/dma/{ => stm32}/stm32-dma.c (99%)
create mode 100644 drivers/dma/stm32/stm32-dma3.c
rename drivers/dma/{ => stm32}/stm32-dmamux.c (100%)
rename drivers/dma/{ => stm32}/stm32-mdma.c (99%)
--
2.25.1
next reply other threads:[~2024-04-23 12:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-23 12:32 Amelie Delaunay [this message]
2024-04-23 12:32 ` [PATCH 01/12] dt-bindings: dma: New directory for STM32 DMA controllers bindings Amelie Delaunay
2024-04-23 13:50 ` Rob Herring
2024-04-23 14:46 ` Amelie Delaunay
2024-04-23 12:32 ` [PATCH 02/12] dmaengine: stm32: New directory for STM32 DMA controllers drivers Amelie Delaunay
2024-04-23 12:32 ` [PATCH 03/12] MAINTAINERS: Add entry for STM32 DMA controllers drivers and documentation Amelie Delaunay
2024-04-23 12:32 ` [PATCH 04/12] dt-bindings: dma: Document STM32 DMA3 controller bindings Amelie Delaunay
2024-04-23 15:22 ` Rob Herring
2024-04-23 12:32 ` [PATCH 05/12] dmaengine: Add STM32 DMA3 support Amelie Delaunay
2024-05-04 12:40 ` Vinod Koul
2024-05-07 11:33 ` Amelie Delaunay
2024-05-07 20:26 ` Frank Li
2024-05-13 9:21 ` Amelie Delaunay
2024-05-15 18:45 ` Frank Li
2024-05-16 9:42 ` Amelie Delaunay
2024-05-04 14:27 ` Christophe JAILLET
2024-05-07 12:37 ` Amelie Delaunay
2024-05-15 18:56 ` Frank Li
2024-05-16 15:25 ` Amelie Delaunay
2024-05-16 17:09 ` Frank Li
2024-05-17 9:42 ` Amelie Delaunay
2024-05-17 14:57 ` Frank Li
2024-05-20 15:42 ` Amelie Delaunay
2024-04-23 12:32 ` [PATCH 06/12] dmaengine: stm32-dma3: add DMA_CYCLIC capability Amelie Delaunay
2024-04-23 12:32 ` [PATCH 07/12] dmaengine: stm32-dma3: add DMA_MEMCPY capability Amelie Delaunay
2024-04-23 12:32 ` [PATCH 08/12] dmaengine: stm32-dma3: add device_pause and device_resume ops Amelie Delaunay
2024-04-23 12:32 ` [PATCH 09/12] dmaengine: stm32-dma3: improve residue granularity Amelie Delaunay
2024-04-23 12:33 ` [PATCH 10/12] dmaengine: add channel device name to channel registration Amelie Delaunay
2024-04-23 12:33 ` [PATCH 11/12] dmaengine: stm32-dma3: defer channel registration to specify channel name Amelie Delaunay
2024-04-23 12:33 ` [PATCH 12/12] arm64: dts: st: add HPDMA nodes on stm32mp251 Amelie Delaunay
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