This patch series aims to add enhancement to RZ/G2L DMAC driver.
It is basically for supporting SCIF DMA.
It is based on a patch in the BSP by Long Luu which is similar to
rcar-dmac implementation.
v1->v2:
* Updated commit description for patch#{1,2,3}
* Introduced rz_dmac_invalidate_lmdesc(), so that same code is shared
between rz_dmac_free_chan_resources() and rz_dmac_terminate_all()
for invalidating hardware descriptors.
* Replaced the loop for->for_each_sg and dropped sgl and sg_len variables
from calculate_total_bytes_in_vd().
* Added resume callback().
* Added patch#4 trivial code clean-ups for rz_dmac_lmdesc_recycle() and
rz_dmac_prep_slave_sg().
* Added patch#5 for rz_dmac_prepare_descs_for_slave_sg() improvements.
Tested audio, RSPI and scifa with these changes.
14: 67366 0 GICv3 157 Edge 11820000.dma-controller:0
15: 67410 0 GICv3 158 Edge 11820000.dma-controller:1
16: 56353 0 GICv3 159 Edge 11820000.dma-controller:2
17: 56353 0 GICv3 160 Edge 11820000.dma-controller:3
18: 8192 0 GICv3 161 Edge 11820000.dma-controller:4
19: 5952 0 GICv3 162 Edge 11820000.dma-controller:5
20: 0 0 GICv3 163 Edge 11820000.dma-controller:6
21: 0 0 GICv3 164 Edge 11820000.dma-controller:7
22: 0 0 GICv3 165 Edge 11820000.dma-controller:8
23: 0 0 GICv3 166 Edge 11820000.dma-controller:9
24: 0 0 GICv3 167 Edge 11820000.dma-controller:10
25: 0 0 GICv3 168 Edge 11820000.dma-controller:11
26: 0 0 GICv3 169 Edge 11820000.dma-controller:12
27: 0 0 GICv3 170 Edge 11820000.dma-controller:13
28: 0 0 GICv3 171 Edge 11820000.dma-controller:14
29: 0 0 GICv3 172 Edge 11820000.dma-controller:15
Biju Das (5):
dmaengine: sh: rz-dmac: Add rz_dmac_invalidate_lmdesc()
dmaengine: sh: rz-dmac: Add device_tx_status() callback
dmaengine: sh: rz-dmac: Add device_{pause,resume}() callbacks
dmaengine: sh: rz-dmac: Trivial code clean-ups
dmaengine: sh: rz-dmac: rz_dmac_prepare_descs_for_slave_sg()
improvements
drivers/dma/sh/rz-dmac.c | 246 +++++++++++++++++++++++++++++++++++----
1 file changed, 222 insertions(+), 24 deletions(-)
--
2.25.1
