mirror-linux/drivers/dma/qcom
Jyothi Kumar Seerapu 4e8331317e dmaengine: qcom: gpi: Add GPI Block event interrupt support
GSI hardware generates an interrupt for each transfer completion.
For multiple messages within a single transfer, this results in
N interrupts for N messages, leading to significant software
interrupt latency.

To mitigate this latency, utilize Block Event Interrupt (BEI) mechanism.
Enabling BEI instructs the GSI hardware to prevent interrupt generation
and BEI is disabled when an interrupt is necessary.

Large I2C transfer can be divided into chunks of messages internally.
Interrupts are not expected for the messages for which BEI bit set,
only the last message triggers an interrupt, indicating the completion of
N messages. This BEI mechanism enhances overall transfer efficiency.

Signed-off-by: Jyothi Kumar Seerapu <quic_jseerapu@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2025-10-16 17:47:56 +05:30
..
Kconfig dmaengine: make QCOM_HIDMA depend on HAS_IOMEM 2023-05-18 17:01:17 +05:30
Makefile dmaengine: qcom: Add GPI dma driver 2020-11-24 21:42:07 +05:30
bam_dma.c dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees 2025-08-11 10:52:43 +05:30
gpi.c dmaengine: qcom: gpi: Add GPI Block event interrupt support 2025-10-16 17:47:56 +05:30
hidma.c dmaengine: Switch back to struct platform_driver::remove() 2024-10-14 23:50:34 +05:30
hidma.h dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
hidma_dbg.c dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
hidma_ll.c dmaengine: qcom: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
hidma_mgmt.c dmaengine: qcom: add missing MODULE_DESCRIPTION() macros 2024-06-07 23:15:55 +05:30
hidma_mgmt.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
hidma_mgmt_sys.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
qcom_adm.c dmaengine: Switch back to struct platform_driver::remove() 2024-10-14 23:50:34 +05:30