linux-stable.git/drivers/dma/loongson, branch master Linux kernel stable tree dmaengine: loongson: Fix spelling mistake "Looongson" -> "Looogson" 2026-03-18T09:40:55+00:00 Colin Ian King colin.i.king@gmail.com 2026-03-17T20:46:31+00:00 4a2759a3ae10bb2e6465cfb01c16d0620a1bc7ab There are a couple of spelling mistakes, one in a comment block and one in a module description. Fix them. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://patch.msgid.link/20260317204631.120332-1-colin.i.king@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
There are a couple of spelling mistakes, one in a comment block and
one in a module description. Fix them.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20260317204631.120332-1-colin.i.king@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: loongson: New driver for the Loongson Multi-Channel DMA controller 2026-03-17T11:18:55+00:00 Binbin Zhou zhoubinbin@loongson.cn 2026-03-07T03:25:37+00:00 1c0028e725f156ebabe68b0025f9c8e7a6170ffd This DMA controller appears in Loongson-2K0300 and Loongson-2K3000. It is a chain multi-channel controller that enables data transfers from memory to memory, device to memory, and memory to device, as well as channel prioritization configurable through the channel configuration registers. In addition, there are slight differences between Loongson-2K0300 and Loongson-2K3000, such as channel register offsets and the number of channels. Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://patch.msgid.link/73bc32ba6249f1eef94fec9b349bc9efa98278ea.1772853681.git.zhoubinbin@loongson.cn Signed-off-by: Vinod Koul <vkoul@kernel.org> 
This DMA controller appears in Loongson-2K0300 and Loongson-2K3000.

It is a chain multi-channel controller that enables data transfers from
memory to memory, device to memory, and memory to device, as well as
channel prioritization configurable through the channel configuration
registers.

In addition, there are slight differences between Loongson-2K0300 and
Loongson-2K3000, such as channel register offsets and the number of
channels.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/73bc32ba6249f1eef94fec9b349bc9efa98278ea.1772853681.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: loongson: loongson2-apb: Simplify locking with guard() and scoped_guard() 2026-03-17T11:18:55+00:00 Binbin Zhou zhoubinbin@loongson.cn 2026-03-07T03:25:35+00:00 9de4303fc04977d15b257726a6519caca687c43a Use guard() and scoped_guard() infrastructure instead of explicitly acquiring and releasing spinlocks to simplify the code and ensure that all locks are released properly. Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://patch.msgid.link/fb59bb25e5c4fcb84d9aa7b351285fa8d02ea8cb.1772853681.git.zhoubinbin@loongson.cn Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Use guard() and scoped_guard() infrastructure instead of explicitly
acquiring and releasing spinlocks to simplify the code and ensure that
all locks are released properly.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/fb59bb25e5c4fcb84d9aa7b351285fa8d02ea8cb.1772853681.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: loongson: loongson2-apb: Convert to devm_clk_get_enabled() 2026-03-17T11:18:55+00:00 Binbin Zhou zhoubinbin@loongson.cn 2026-03-07T03:25:12+00:00 bdf1621a6a67b6327e2a26a1d47bffcde3be3b26 Use the devm_clk_get_enabled() helper function to simplify the probe routine. Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://patch.msgid.link/4f3aad22d14e730cc040ece8b0ced37853d52876.1772853681.git.zhoubinbin@loongson.cn Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Use the devm_clk_get_enabled() helper function to simplify the probe
routine.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/4f3aad22d14e730cc040ece8b0ced37853d52876.1772853681.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: loongson: loongson2-apb: Convert to dmaenginem_async_device_register() 2026-03-17T11:18:55+00:00 Binbin Zhou zhoubinbin@loongson.cn 2026-03-07T03:25:11+00:00 7d348227f4961bbf21255281438ee3aebe12830f Use the dmaenginem_async_device_register() helper function to simplify the probe routine. Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://patch.msgid.link/c56e67ecde38e9a3bda5f88ea3fc20b97a5cba6c.1772853681.git.zhoubinbin@loongson.cn Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Use the dmaenginem_async_device_register() helper function to simplify
the probe routine.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/c56e67ecde38e9a3bda5f88ea3fc20b97a5cba6c.1772853681.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: loongson: New directory for Loongson DMA controllers drivers 2026-03-17T11:18:55+00:00 Binbin Zhou zhoubinbin@loongson.cn 2026-03-07T03:25:10+00:00 ffee2dc04e7e06534aaa4fd51ef89645b809b6b8 Gather the Loongson DMA controllers under drivers/dma/loongson/ Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Keguang Zhang <keguang.zhang@gmail.com> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://patch.msgid.link/0a0853a85630724741061f6fe08680610e49a06e.1772853681.git.zhoubinbin@loongson.cn Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Gather the Loongson DMA controllers under drivers/dma/loongson/

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Keguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/0a0853a85630724741061f6fe08680610e49a06e.1772853681.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>