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linux/drivers/dma
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Sameer Pujar ef90724bad dmaengine: tegra210-adma: restore channel status 
[ Upstream commit f33e7bb3eb ]

Status of ADMA channel registers is not saved and restored during system
suspend. During active playback if system enters suspend, this results in
wrong state of channel registers during system resume and playback fails
to resume properly. Fix this by saving following channel registers in
runtime suspend and restore during runtime resume.
 * ADMA_CH_LOWER_SRC_ADDR
 * ADMA_CH_LOWER_TRG_ADDR
 * ADMA_CH_FIFO_CTRL
 * ADMA_CH_CONFIG
 * ADMA_CH_CTRL
 * ADMA_CH_CMD
 * ADMA_CH_TC
Runtime PM calls will be inovked during system resume path if a playback
or capture needs to be resumed. Hence above changes work fine for system
suspend case.

Fixes: f46b195799 ("dmaengine: tegra-adma: Add support for Tegra210 ADMA")
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:50:45 +01:00
..
bestcomm treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
dw dmaengine: dw-dmac: implement dma protection control setting 2019-12-13 08:51:43 +01:00
dw-axi-dmac dmaengine: dw-axi-dmac: fix null dereference when pointer first is null 2019-06-25 11:35:55 +08:00
hsu dmaengine: hsu: Support dmaengine_terminate_sync() 2018-07-10 21:10:44 +05:30
ioat ioat: ioat_alloc_ring() failure handling. 2020-01-17 19:47:16 +01:00
ipu treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
mediatek dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC 2018-03-27 15:18:15 +05:30
ppc4xx dmaengine: ppc4xx: fix off-by-one build failure 2018-11-13 11:08:41 -08:00
qcom dmaengine: qcom: bam_dma: Fix resource leak 2019-11-06 13:06:21 +01:00
sh dmaengine: rcar-dmac: set scatter/gather max segment size 2019-11-24 08:20:30 +01:00
ti dmaengine: cppi41: Fix cppi41_dma_prep_slave_sg() when idle 2019-11-06 13:06:21 +01:00
xilinx dmaengine: xilinx_dma: Clear desc_pendingcount in xilinx_dma_reset 2020-01-04 19:12:38 +01:00
acpi-dma.c
altera-msgdma.c
amba-pl08x.c
at_hdmac_regs.h
at_hdmac.c dmaengine: at_hdmac: fix module unloading 2018-12-05 19:32:12 +01:00
at_xdmac.c dmaengine: at_xdmac: remove a stray bottom half unlock 2019-11-20 18:46:20 +01:00
bcm-sba-raid.c treewide: Use struct_size() for devm_kmalloc() and friends 2018-06-06 11:15:43 -07:00
bcm2835-dma.c dmaengine: bcm2835: Print error in case setting DMA mask fails 2019-10-05 13:09:34 +02:00
coh901318_lli.c
coh901318.c dmaengine: coh901318: Remove unused variable 2019-12-13 08:51:42 +01:00
coh901318.h
dma-axi-dmac.c dmaengine: axi-dmac: Don't check the number of frames for alignment 2020-01-27 14:50:41 +01:00
dma-jz4740.c
dma-jz4780.c dmaengine: dma-jz4780: Further residue status fix 2019-11-20 18:46:17 +01:00
dmaengine.c Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
dmaengine.h
dmatest.c dmaengine: dmatest: Abort test in case of mapping error 2019-03-13 14:02:36 -07:00
ep93xx_dma.c headers: separate linux/mod_devicetable.h from linux/platform_device.h 2018-07-07 17:52:26 +02:00
fsl_raid.c
fsl_raid.h
fsl-edma.c
fsldma.c dmaengine: fsldma: simplify getting .drvdata 2018-04-22 21:37:17 +05:30
fsldma.h
idma64.c dmaengine: idma64: Use actual device for DMA transfers 2019-06-15 11:54:10 +02:00
idma64.h dmaengine: idma64: Use actual device for DMA transfers 2019-06-15 11:54:10 +02:00
img-mdc-dma.c
imx-dma.c dmaengine: imx-dma: fix warning comparison of distinct pointer types 2019-04-05 22:33:15 +02:00
imx-sdma.c dmaengine: imx-sdma: fix use-after-free on probe error path 2019-07-26 09:13:56 +02:00
iop-adma.c dmaengine: iop-adma: use correct printk format strings 2019-10-05 13:09:42 +02:00
k3dma.c dmaengine: k3dma: Avoid null pointer traversal 2020-01-17 19:47:16 +01:00
Kconfig dmaengine: dma-jz4780: Don't depend on MACH_JZ4780 2019-11-20 18:46:16 +01:00
lpc18xx-dmamux.c
Makefile dmaengine: Add Actions Semi Owl family S900 DMA driver 2018-08-09 08:16:00 +05:30
mic_x100_dma.c dmaengine: mic_x100_dma: use devm_kzalloc to fix an issue 2018-08-27 11:16:04 +05:30
mic_x100_dma.h
mmp_pdma.c
mmp_tdma.c
moxart-dma.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
mpc512x_dma.c
mv_xor_v2.c dmaengine: mv_xor_v2: use {lower,upper}_32_bits to configure HW descriptor address 2018-07-25 17:53:22 +05:30
mv_xor.c dmaengine: mv_xor: Use correct device for DMA API 2020-01-27 14:50:24 +01:00
mv_xor.h
mxs-dma.c dmaengine: mxs-dma: Switch to SPDX identifier 2018-05-23 11:10:31 +05:30
nbpfaxi.c dmaengine: nbpfaxi: Mark expected switch fall-through 2018-07-09 17:01:35 +05:30
of-dma.c
owl-dma.c dmaengine: Add Actions Semi Owl family S900 DMA driver 2018-08-09 08:16:00 +05:30
pch_dma.c
pl330.c dmaengine: pl330: _stop: clear interrupt status 2019-05-31 06:46:14 -07:00
pxa_dma.c dmaengine: pxa: add a default requestor policy 2018-06-18 21:29:23 +02:00
s3c24xx-dma.c headers: separate linux/mod_devicetable.h from linux/platform_device.h 2018-07-07 17:52:26 +02:00
sa11x0-dma.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
sirf-dma.c
sprd-dma.c dmaengine: sprd: Fix the possible memory leak issue 2019-11-12 19:20:54 +01:00
st_fdma.c
st_fdma.h
ste_dma40_ll.c
ste_dma40_ll.h
ste_dma40.c dmaengine: ste_dma40: fix unneeded variable warning 2019-09-06 10:21:54 +02:00
stm32-dma.c dmaengine: stm32-dma: check whether length is aligned on FIFO threshold 2019-12-05 09:21:35 +01:00
stm32-dmamux.c dmaengine: stm32-dmamux: fix a potential buffer overflow 2018-03-22 10:51:35 +05:30
stm32-mdma.c dmaengine: stm32-mdma: Fix a possible null-pointer dereference in stm32_mdma_irq_handler() 2019-09-06 10:21:56 +02:00
sun4i-dma.c
sun6i-dma.c
tegra20-apb-dma.c dmaengine: tegra-apb: Error out if DMA_PREP_INTERRUPT flag is unset 2019-08-06 19:06:47 +02:00
tegra210-adma.c dmaengine: tegra210-adma: restore channel status 2020-01-27 14:50:45 +01:00
timb_dma.c dmaengine: timb_dma: Use proper enum in td_prep_slave_sg 2019-11-24 08:19:46 +01:00
TODO
txx9dmac.c dmaengine: txx9dmac: simplify getting .drvdata 2018-04-22 21:38:06 +05:30
txx9dmac.h
virt-dma.c
virt-dma.h
xgene-dma.c
zx_dma.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00