dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Jonas Jensen <jonas.jensen@gmail.com>

Sparse complains:

drivers/dma/mmp_tdma.c:407:22: warning: symbol 'mmp_tdma_alloc_descriptor' was not declared. Should it be static?
drivers/dma/mmp_tdma.c:595:17: warning: symbol 'mmp_tdma_xlate' was not declared. Should it be static?

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Qiao Zhou <zhouqiao@marvell.com>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>

imxdma_probe function starting brace is wrongly indented, so fix that

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers should ensure that tasklets are killed, so that they can't be
executed after driver remove is executed, so ensure they are killed.

This driver used vchan tasklets, so those need to be killed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Jingchang Lu <b35083@freescale.com>
Cc: Peter Griffin <peter.griffin@linaro.org>

drivers should ensure that tasklets are killed, so that they can't be
executed after driver remove is executed, so ensure they are killed.

This driver used vchan tasklets, so those need to be killed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>

size_t should be printed with %zu, not %lu as driver did, so fix these
warning by doing this change

drivers/dma/fsl_raid.c: In function 'fsl_re_prep_dma_genq':
drivers/dma/fsl_raid.c:341:4: warning: format '%lu' expects argument of type
'long unsigned int', but argument 3 has type 'size_t' [-Wformat=]
    len, FSL_RE_MAX_DATA_LEN);
    ^
drivers/dma/fsl_raid.c: In function 'fsl_re_prep_dma_pq':
drivers/dma/fsl_raid.c:428:4: warning: format '%lu' expects argument of type
'long unsigned int', but argument 3 has type 'size_t' [-Wformat=]
    len, FSL_RE_MAX_DATA_LEN);
    ^
drivers/dma/fsl_raid.c: In function 'fsl_re_prep_dma_memcpy':
drivers/dma/fsl_raid.c:549:4: warning: format '%lu' expects argument of type
'long unsigned int', but argument 3 has type 'size_t' [-Wformat=]
    len, FSL_RE_MAX_DATA_LEN);
    ^

Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers should ensure that tasklets are killed, so that they can't be
run after driver remove is executed

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Xuelin Shi <xuelin.shi@freescale.com>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Cc: Jingchang Lu <b35083@freescale.com>
Cc: Peter Griffin <peter.griffin@linaro.org>

drivers should ensure that tasklets are killed, so that they can't be
executed after driver remove is executed, so ensure they are killed.

This driver used vchan tasklets, so those need to be killed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>

Sparse complains:

drivers/dma/coh901318.c:269:30: warning: symbol 'chan_config' was not declared. Should it be static?
drivers/dma/coh901318.c:2806:12: warning: symbol 'coh901318_init' was not declared. Should it be static?
drivers/dma/coh901318.c:2812:13: warning: symbol 'coh901318_exit' was not declared. Should it be static?

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

drivers should ensure that tasklets are killed, so that they can't be
run after driver remove is executed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

This patch updates the dmatest client to
Support scatter-gather dma mode.

Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

Currently the handler ignores the channel 0 interrupt and thus doesn't ack
it properly. This is done in order to allow sdma_run_channel0() to poll
on the irq status bit, as this function may be called in atomic context,
but needs to know when the channel has finished.

This works mostly, as the polling happens under a spinlock, disabling IRQs
on the local CPU, leaving only a very slight race window for a spurious
IRQ to happen if the handler is executed on another CPU in an SMP system.
Still this is clearly suboptimal.
This behavior turns into a real problem on an RT system, where the spinlock
doesn't disable IRQs on the local CPU. Not acking the IRQ in the handler
in such a setup is very likely to drown the CPU in an IRQ storm, leaving
it unable to make any progress in the polling loop, leading to the IRQ
never being acked.

Fix this by properly acknowledging the channel 0 IRQ in the handler.
As the IRQ status bit can no longer be used to poll for the channel
completion, switch over to using the SDMA_H_STATSTOP register for this
purpose, where bit 0 is cleared by the hardware when the channel is done.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

In case of error, the function platform_device_register_full()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

Signed-off-by: Vinod Koul <vinod.koul@intel.com>

The new mv_xor_v2 driver supports the XOR engines found in the 64-bits
ARM from Marvell of the Armada 7K and Armada 8K family. This XOR
engine is a completely new hardware block, entirely different from the
one used on previous Marvell Armada platforms, which use the existing
mv_xor driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

This commit adds the Device Tree binding documentation for the Marvell
XOR v2 engine, which is found on Marvell Armada 7K/8K ARM64 SoCs.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

The newly added zynqmp_dma driver produces a warning on 32-bit architectures
when dma_addr_t is 64-bit wide:

drivers/dma/xilinx/zynqmp_dma.c: In function 'zynqmp_dma_config_sg_ll_desc':
drivers/dma/xilinx/zynqmp_dma.c:321:9: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
        ((dma_addr_t)sdesc - (dma_addr_t)chan->desc_pool_v);
         ^
drivers/dma/xilinx/zynqmp_dma.c:321:29: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
        ((dma_addr_t)sdesc - (dma_addr_t)chan->desc_pool_v);

This changes the cast to the more appropriate uintptr_t.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

In cyclic DMA mode need to link the tail bd segment
with the head bd segment to process bd's in cyclic.

Current driver is doing this only for tx channel
needs to update the same for rx channel case also.

This patch fixes the same.

Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

Added the driver for zynqmp dma engine used in Zynq
UltraScale+ MPSoC. This dma controller supports memory to memory
and I/O to I/O buffer transfers.

Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

Device-tree binding documentation for Xilinx zynqmp dma engine
used in Zynq UltraScale+ MPSoC.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Punnaiah Choudary Kalluri <punnaia@xilinx.com>
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

Cookies corresponding to pending transfers have a residue value equal to
the full size of the corresponding descriptor. The driver miscomputes
that and uses the size of the active descriptor instead. Fix it.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[geert: Also check desc.active list]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>