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6cb6e9c6 |
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13-Jan-2023 |
Serge Semin <Sergey.Semin@baikalelectronics.ru> |
dmaengine: dw-edma: Use DMA engine device debugfs subdirectory Since all DW eDMA read and write channels are now installed in a framework of a single DMA engine device, move all the DW eDMA-specific debugfs nodes into a ready-to-use DMA-engine debugfs subdirectory. It's created during the DMA-device registration and can be found in the dma_device.dbg_dev_root field. Link: https://lore.kernel.org/r/20230113171409.30470-19-Sergey.Semin@baikalelectronics.ru Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-by: Vinod Koul <vkoul@kernel.org>
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20318457 |
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24-May-2022 |
Frank Li <Frank.Li@nxp.com> |
dmaengine: dw-edma: Detach the private data and chip info structures "struct dw_edma_chip" contains an internal structure "struct dw_edma" that is used by the eDMA core internally and should not be touched by the eDMA controller drivers themselves. But currently, the eDMA controller drivers like "dw-edma-pci" allocate and populate this internal structure before passing it on to the eDMA core. The eDMA core further populates the structure and uses it. This is wrong! Hence, move all the "struct dw_edma" specifics from controller drivers to the eDMA core. Link: https://lore.kernel.org/r/20220524152159.2370739-3-Frank.Li@nxp.com Tested-by: Serge Semin <fancer.lancer@gmail.com> Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-By: Vinod Koul <vkoul@kernel.org>
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5244ac2e |
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18-Feb-2021 |
Gustavo Pimentel <Gustavo.Pimentel@synopsys.com> |
dmaengine: dw-edma: Move struct dentry variable from static definition into dw_edma struct Move struct dentry variable from static definition (dw-edma-v0-debugfs.c) into dw_edma struct (dw-edma-core.h) Also the variable was renamed from base_dir to debugfs. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Link: https://lore.kernel.org/r/07c1167b671e7b175700e2e7061cf0b3dd8c6adb.1613674948.git.gustavo.pimentel@synopsys.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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305aebef |
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04-Jun-2019 |
Gustavo Pimentel <Gustavo.Pimentel@synopsys.com> |
dmaengine: Add Synopsys eDMA IP version 0 debugfs support Add Synopsys eDMA IP version 0 debugfs support to assist any debug in the future. Creates a file system structure composed by folders and files that mimic the IP register map (this files are read only) to ease any debug. To enable this feature is necessary to select DEBUG_FS option on kernel configuration. Small output example: (eDMA IP version 0, unroll, 1 write + 1 read channels) % mount -t debugfs none /sys/kernel/debug/ % tree /sys/kernel/debug/dw-edma-core:0/ dw-edma/ ├── version ├── mode ├── wr_ch_cnt ├── rd_ch_cnt └── registers ├── ctrl_data_arb_prior ├── ctrl ├── write │ ├── engine_en │ ├── doorbell │ ├── ch_arb_weight_low │ ├── ch_arb_weight_high │ ├── int_status │ ├── int_mask │ ├── int_clear │ ├── err_status │ ├── done_imwr_low │ ├── done_imwr_high │ ├── abort_imwr_low │ ├── abort_imwr_high │ ├── ch01_imwr_data │ ├── ch23_imwr_data │ ├── ch45_imwr_data │ ├── ch67_imwr_data │ ├── linked_list_err_en │ ├── engine_chgroup │ ├── engine_hshake_cnt_low │ ├── engine_hshake_cnt_high │ ├── ch0_pwr_en │ ├── ch1_pwr_en │ ├── ch2_pwr_en │ ├── ch3_pwr_en │ ├── ch4_pwr_en │ ├── ch5_pwr_en │ ├── ch6_pwr_en │ ├── ch7_pwr_en │ └── channel:0 │ ├── ch_control1 │ ├── ch_control2 │ ├── transfer_size │ ├── sar_low │ ├── sar_high │ ├── dar_high │ ├── llp_low │ └── llp_high └── read ├── engine_en ├── doorbell ├── ch_arb_weight_low ├── ch_arb_weight_high ├── int_status ├── int_mask ├── int_clear ├── err_status_low ├── err_status_high ├── done_imwr_low ├── done_imwr_high ├── abort_imwr_low ├── abort_imwr_high ├── ch01_imwr_data ├── ch23_imwr_data ├── ch45_imwr_data ├── ch67_imwr_data ├── linked_list_err_en ├── engine_chgroup ├── engine_hshake_cnt_low ├── engine_hshake_cnt_high ├── ch0_pwr_en ├── ch1_pwr_en ├── ch2_pwr_en ├── ch3_pwr_en ├── ch4_pwr_en ├── ch5_pwr_en ├── ch6_pwr_en ├── ch7_pwr_en └── channel:0 ├── ch_control1 ├── ch_control2 ├── transfer_size ├── sar_low ├── sar_high ├── dar_high ├── llp_low └── llp_high Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Cc: Vinod Koul <vkoul@kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Joao Pinto <jpinto@synopsys.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
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