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New drivers/devices
- Support for QCOM SM8250 GPI DMA
- removal of shdma-of driver and binding
Updates:
- arm-pl08x yaml binding move
- altera-msgdma gained DT support
- removal of imx-sdma platform data support
- idxd and xilinx driver updates
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Merge tag 'dmaengine-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"This time around we have a smaller pull request than usual and this
includes code removal, so should be good!
New drivers/devices
- Support for QCOM SM8250 GPI DMA
- removal of shdma-of driver and binding
Updates:
- arm-pl08x yaml binding move
- altera-msgdma gained DT support
- removal of imx-sdma platform data support
- idxd and xilinx driver updates"
* tag 'dmaengine-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (22 commits)
dmaengine: imx-sdma: Remove platform data header
dmaengine: xilinx: dpdma: Fix spacing around addr[i-1]
dmaengine: xilinx: dpdma: Use kernel type u32 over uint32_t
dmaengine: altera-msgdma: add OF support
MAINTAINERS: add entry for Altera mSGDMA
dt-bindings: dma: add schema for altera-msgdma
dmaengine: xilinx: dpdma: fix kernel-doc
dmaengine: sf-pdma: apply proper spinlock flags in sf_pdma_prep_dma_memcpy()
dmaengine: sh: Remove unused shdma-of driver
dt-bindings: dmaengine: Remove SHDMA Device Tree bindings
dmaengine: qcom: gpi: Add SM8250 compatible
dt-bindings: dmaengine: qcom: gpi: add compatible for sm8250
dmaengine: sun4i: Use list_move_tail instead of list_del/list_add_tail
dmaengine: ti: omap-dma: Skip pointless cpu_pm context restore on errors
dmaengine: hsu: Account transferred bytes
dmaengine: Move kdoc description of struct dma_chan_percpu closer to it
dmaengine: xilinx: dpdma: Print debug message when losing vsync race
dmaengine: xilinx: dpdma: Print channel number in kernel log messages
dt-bindings: dma: convert arm-pl08x to yaml
dmaengine: idxd: remove devm allocation for idxd->int_handles
...
Fix function name in xilinx/xilinx_dpdma.c comment to remove
a warning found by kernel-doc.
drivers/dma/xilinx/xilinx_dpdma.c:935: warning: expecting prototype for
xilinx_dpdma_chan_no_ostand(). Prototype was for
xilinx_dpdma_chan_notify_no_ostand() instead.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/1623222893-123227-1-git-send-email-yang.lee@linux.alibaba.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The hardware retrigger is inherently racy with the vsync interrupt. This
isn't an issue as the hardware provides a way to detect a race loss and
handle it correctly. When debugging issues related to this, it's useful
to get a notification of the race loss. Add a debug message to do so.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Reviewed-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Link: https://lore.kernel.org/r/20210520152420.23986-4-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
To ease debugging, add the channel number to all kernel log messages
related to a particular channel.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Reviewed-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Link: https://lore.kernel.org/r/20210520152420.23986-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
While the descriptor ID is stored in a 32-bit field in the hardware
descriptor, only 16 bits are used by the hardware and are reported
through the XILINX_DPDMA_CH_DESC_ID register. Failure to handle the
wrap-around results in a descriptor ID mismatch after 65536 frames. Fix
it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Reviewed-by: Jianqiang Chen <jianqiang.chen@xilinx.com>
Link: https://lore.kernel.org/r/20210520152420.23986-5-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The active descriptor pointer is accessed from different contexts,
including different interrupt handlers, and its access must be protected
by the channel's lock. This wasn't done in the done IRQ handler. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20210307040629.29308-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When multiple channels are part of a video group, the transfer is
triggered only when all channels in the group are ready. The logic to do
so is incorrect, as it causes the descriptors for all channels but the
last one in a group to not being pushed to the hardware. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20210307040629.29308-2-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Link: https://lore.kernel.org/r/20201006050458.221329-2-allen.lkml@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The sparse tool complains as follows:
drivers/dma/xilinx/xilinx_dpdma.c:349:37: warning:
symbol 'dpdma_debugfs_reqs' was not declared. Should it be static?
This variable is not used outside of xilinx_dpdma.c, so this commit
marks it static.
Fixes: 1d220435cab3 ("dmaengine: xilinx: dpdma: Add debugfs support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Hyun Kwon <hyun.kwon@xilinx.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200818112217.43816-1-weiyongjun1@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Document the struct xilinx_dpdma_chan desc field to fix a kerneldoc
undocumented member warning (which can be reproduced by compiling with
W=1).
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200722161747.30048-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
xilinx_dpdma_sw_desc_set_dma_addrs() documentation is missing describing
'xdev', so add it
drivers/dma/xilinx/xilinx_dpdma.c:313: warning: Function parameter or
member 'xdev' not described in 'xilinx_dpdma_sw_desc_set_dma_addrs'
Link: https://lore.kernel.org/r/20200718135201.191881-2-vkoul@kernel.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
xilinx_dpdma_config() channel id is unsigned int and compares with
ZYNQMP_DPDMA_VIDEO0 which is zero, so remove this comparison
drivers/dma/xilinx/xilinx_dpdma.c:1073:15: warning: comparison of
unsigned expression in ‘>= 0’ is always true [-Wtype-limits] if
(chan->id >= ZYNQMP_DPDMA_VIDEO0 && chan->id <= ZYNQMP_DPDMA_VIDEO2)
Link: https://lore.kernel.org/r/20200718135201.191881-1-vkoul@kernel.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The ZynqMP DisplayPort subsystem includes a DMA engine called DPDMA with
6 DMa channels (4 for display and 2 for audio). This driver exposes the
DPDMA through the dmaengine API, to be used by audio (ALSA) and display
(DRM) drivers for the DisplayPort subsystem.
Signed-off-by: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Tejas Upadhyay <tejasu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200717013337.24122-4-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
