Geert Uytterhoeven 71723a96b8 dmaengine: Create symlinks between DMA channels and slaves ... Currently it is not easy to find out which DMA channels are in use, and which slave devices are using which channels. Fix this by creating two symlinks between the DMA channel and the actual slave device when a channel is requested: 1. A "slave" symlink from DMA channel to slave device, 2. A "dma:<name>" symlink slave device to DMA channel. When the channel is released, the symlinks are removed again. The latter requires keeping track of the slave device and the channel name in the dma_chan structure. Note that this is limited to channel request functions for requesting an exclusive slave channel that take a device pointer (dma_request_chan() and dma_request_slave_channel*()). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Link: https://lore.kernel.org/r/20200117153056.31363-1-geert+renesas@glider.be Signed-off-by: Vinod Koul <vkoul@kernel.org>		2020-01-24 11:41:32 +05:30
..
bestcomm	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
dw	dmaengine: dw: platform: Mark 'hclk' clock optional	2019-10-14 13:51:44 +05:30
dw-axi-dmac	dmaengine: virt-dma: Add missing locking	2019-12-26 10:04:18 +05:30
dw-edma	dmaengine: dw-edma: fix endianess confusion	2019-07-22 20:58:15 +05:30
fsl-dpaa2-qdma	dmaengine: fsl-dpaa2-qdma: Remove unnecessary local variables in DPDMAI_CMD_CREATE macro	2019-11-02 22:03:01 +05:30
hsu	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
idxd	dmaengine: idxd: add char driver to expose submission portal to userland	2020-01-24 11:18:45 +05:30
ioat	dmaengine: ioat: Support in-use unbind	2019-12-24 10:18:37 +05:30
ipu	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
mediatek	dmaengine: virt-dma: Add missing locking	2019-12-26 10:04:18 +05:30
ppc4xx	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7	2019-05-21 11:28:40 +02:00
qcom	dmaengine: qcom: bam_dma: Fix resource leak	2019-10-18 13:27:58 +05:30
sf-pdma	dmaengine: virt-dma: Add missing locking	2019-12-26 10:04:18 +05:30
sh	dmaengine: rcar-dmac: Add dma-channel-mask property support	2019-10-14 12:26:58 +05:30
ti	dmaengine: ti: k3-udma: fix spelling mistake "limted" -> "limited"	2020-01-23 17:03:29 +05:30
xilinx	dmaengine: zynqmp_dma: fix burst length configuration	2020-01-21 14:49:30 +05:30
acpi-dma.c	dmaengine: acpi: Add kernel doc parameter descriptions	2019-08-21 09:41:27 +05:30
altera-msgdma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
amba-pl08x.c	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
at_hdmac_regs.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
at_hdmac.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
at_xdmac.c	dmaengine: at_xdmac: Use devm_platform_ioremap_resource() in at_xdmac_probe()	2019-10-14 13:21:20 +05:30
bcm2835-dma.c	dmaengine: bcm2835: do not call vchan_vdesc_fini() with lock held	2019-12-26 10:04:18 +05:30
bcm-sba-raid.c	dmaengine: bcm-sba-raid: no need to check return value of debugfs_create functions	2019-06-14 11:14:58 +05:30
coh901318_lli.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
coh901318.c	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
coh901318.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
dma-axi-dmac.c	dmaengine: axi-dmac: add a check for devm_regmap_init_mmio	2019-12-11 16:11:50 +05:30
dma-jz4780.c	dmaengine: JZ4780: Add support for the X1830.	2019-12-23 13:12:49 +05:30
dmaengine.c	dmaengine: Create symlinks between DMA channels and slaves	2020-01-24 11:41:32 +05:30
dmaengine.h	dmaengine: Move dma_get_{,any_}slave_channel() to private dmaengine.h	2020-01-21 15:05:29 +05:30
dmatest.c	dmaengine: dmatest: Add support for completion polling	2019-09-04 10:14:22 +05:30
ep93xx_dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
fsl_raid.c	dmaengine: fsl_raid: make of_device_ids const.	2017-06-29 09:25:28 +05:30
fsl_raid.h	dmaengine: Driver support for FSL RaidEngine device.	2015-04-02 16:10:27 +05:30
fsl-edma-common.c	dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A platform	2019-12-18 11:55:46 +05:30
fsl-edma-common.h	dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A platform	2019-12-18 11:55:46 +05:30
fsl-edma.c	dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A platform	2019-12-18 11:55:46 +05:30
fsl-qdma.c	dmaengine: fsl-qdma: fix duplicated argument to &&	2020-01-21 13:15:37 +05:30
fsldma.c	dmaengine: fsldma: Mark expected switch fall-through	2019-08-20 19:42:34 -05:00
fsldma.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40	2019-05-24 17:27:12 +02:00
hisi_dma.c	dmaengine: hisilicon: Add Kunpeng DMA engine support	2020-01-24 11:18:45 +05:30
idma64.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
idma64.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
img-mdc-dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422	2019-06-05 17:37:15 +02:00
imx-dma.c	dmaengine: imx-dma: Mark expected switch fall-through	2019-07-31 20:49:04 +05:30
imx-sdma.c	dmaengine: imx-sdma: Fix memory leak	2019-12-26 10:04:19 +05:30
iop-adma.c	dmaengine: iop-adma: clean up an indentation issue	2019-11-14 10:27:37 +05:30
iop-adma.h	dma: iop-adma: allow building without platform headers	2019-08-14 15:36:22 +02:00
k3dma.c	dmaengine: k3dma: Use devm_platform_ioremap_resource() in k3_dma_probe()	2019-10-14 13:21:20 +05:30
Kconfig	dmaengine: hisilicon: Add Kunpeng DMA engine support	2020-01-24 11:18:45 +05:30
lpc18xx-dmamux.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
Makefile	dmaengine: hisilicon: Add Kunpeng DMA engine support	2020-01-24 11:18:45 +05:30
mcf-edma.c	dmaengine: fsl-edma: add drvdata for fsl-edma	2019-07-03 13:28:22 +05:30
mic_x100_dma.c	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
mic_x100_dma.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 290	2019-06-05 17:36:38 +02:00
milbeaut-hdmac.c	dmaengine: milbeaut-hdmac: remove redundant error log	2019-11-08 09:26:17 +05:30
milbeaut-xdmac.c	dmaengine: milbeaut-xdmac: remove redundant error log	2019-11-08 09:26:17 +05:30
mmp_pdma.c	dmaengine: mmp_pdma: add missed of_dma_controller_free	2019-11-22 10:51:30 +05:30
mmp_tdma.c	dmaengine: mmp_tdma: add missed of_dma_controller_free	2019-11-22 10:51:29 +05:30
moxart-dma.c	treewide: Use struct_size() for kmalloc()-family	2018-06-06 11:15:43 -07:00
mpc512x_dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7	2019-05-21 11:28:40 +02:00
mv_xor_v2.c	dmaengine: mv_xor_v2: Fix -Wshift-negative-value	2019-08-20 17:06:36 +05:30
mv_xor.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
mv_xor.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
mxs-dma.c	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
nbpfaxi.c	dmaengine: nbpfaxi: Use dev_get_drvdata()	2019-04-29 10:47:15 +05:30
of-dma.c	dmaengine: Move dma_get_{,any_}slave_channel() to private dmaengine.h	2020-01-21 15:05:29 +05:30
owl-dma.c	dmaengine: virt-dma: Add missing locking	2019-12-26 10:04:18 +05:30
pch_dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
pl330.c	dmaengine: pl330: Convert to the *_late and *_early system sleep callbacks	2019-12-10 11:39:04 +05:30
plx_dma.c	dmaengine: plx-dma: Implement descriptor submission	2020-01-15 19:40:51 +05:30
pxa_dma.c	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
s3c24xx-dma.c	dmaengine: s3c24xx-dma: fix spelling mistake "to" -> "too"	2020-01-23 17:03:25 +05:30
sa11x0-dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sirf-dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4	2019-05-21 11:28:40 +02:00
sprd-dma.c	dmaengine: sprd: Add wrap address support for link-list mode	2019-11-14 16:03:35 +05:30
st_fdma.c	dmaengine: Remove dev_err() usage after platform_get_irq()	2019-07-31 20:50:53 +05:30
st_fdma.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
ste_dma40_ll.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
ste_dma40_ll.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
ste_dma40.c	dmaengine: ste_dma40: fix unneeded variable warning	2019-07-22 20:58:33 +05:30
stm32-dma.c	dmaengine: stm32-dma: Use struct_size() helper	2019-09-04 10:25:08 +05:30
stm32-dmamux.c	dmaengine: stm32-dmamux: Switch to use device_property_count_u32()	2019-07-29 12:25:21 +05:30
stm32-mdma.c	dmaengine updates for v5.4-rc1	2019-09-17 19:04:40 -07:00
sun4i-dma.c	dmaengine: sun4i: Add support for cyclic requests with dedicated DMA	2020-01-21 14:04:29 +05:30
sun6i-dma.c	dmaengine: Remove dev_err() usage after platform_get_irq()	2019-07-31 20:50:53 +05:30
tegra20-apb-dma.c	dmaengine: tegra-apb: Support per-burst residue granularity	2019-07-25 15:55:51 +05:30
tegra210-adma.c	dmaengine: tegra210-adma: fix transfer failure	2019-10-14 12:40:38 +05:30
timb_dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
TODO
txx9dmac.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
txx9dmac.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
uniphier-mdmac.c	dmaengine: uniphier-mdmac: use devm_platform_ioremap_resource()	2019-10-11 15:45:41 +05:30
virt-dma.c	dmaengine: virt-dma: use vchan_vdesc_fini() to free descriptors	2019-12-26 10:04:18 +05:30
virt-dma.h	dmaengine: virt-dma: Add missing locking around list operations	2019-12-26 10:04:18 +05:30
xgene-dma.c	dmaengine: Remove dev_err() usage after platform_get_irq()	2019-07-31 20:50:53 +05:30
zx_dma.c	dmaengine: zx: remove: removed dmam_pool_destroy	2019-11-14 12:16:53 +05:30