[v1] dmaengine: stm32-dma3: improvements and helper functions

[PATCH 0/4] dmaengine: stm32-dma3: improvements and helper functions

Amelie Delaunay posted 4 patches 3 months, 1 week ago

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drivers/dma/stm32/stm32-dma3.c | 166 ++++++++++++++++++++++++++++++++++-------
1 file changed, 137 insertions(+), 29 deletions(-)

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[PATCH 0/4] dmaengine: stm32-dma3: improvements and helper functions

Posted by Amelie Delaunay 3 months, 1 week ago

This series introduces improvements and helper functions for channel
and driver management.

It enables proper unloading of the stm32_dma3 module, replacing the
previous subsys_initcall() mechanism with module_plaform_driver().

It introduces helfer functions to take and release the channel semaphore,
and restores the semaphore state on resume, considering the possible
reset of CxSEMCR register during suspend.

It also adds a helper to retrieve the device pointer from the dma_device
structure contained in stm32_dma3_ddata, simplifying the code.

Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
---
Amelie Delaunay (4):
      dmaengine: stm32-dma3: use module_platform_driver
      dmaengine: stm32-dma3: introduce channel semaphore helpers
      dmaengine: stm32-dma3: restore channel semaphore status after suspend
      dmaengine: stm32-dma3: introduce ddata2dev helper

 drivers/dma/stm32/stm32-dma3.c | 166 ++++++++++++++++++++++++++++++++++-------
 1 file changed, 137 insertions(+), 29 deletions(-)
---
base-commit: 398035178503bf662281bbffb4bebce1460a4bc5
change-id: 20251103-dma3_improv-b4b36ee231e4

Best regards,
-- 
Amelie Delaunay <amelie.delaunay@foss.st.com>