linux/drivers/dma/sh
Geert Uytterhoeven e5bfbbb916 dmaengine: rcar-dmac: Add support for R-Car V3U
The DMACs (both SYS-DMAC and RT-DMAC) on R-Car V3U differ slightly from
the DMACs on R-Car Gen2 and other R-Car Gen3 SoCs:
  1. The per-channel registers are located in a second register block.
     Add support for mapping the second block, using the appropriate
     offsets and stride.
  2. The common Channel Clear Register (DMACHCLR) was replaced by a
     per-channel register.
     Update rcar_dmac_chan_clear{,_all}() to handle this.
     As rcar_dmac_init() needs to clear the status before the individual
     channels are probed, channel index and base address initialization
     are moved forward.

Inspired by a patch in the BSP by Phong Hoang
<phong.hoang.wz@renesas.com>.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210128084455.2237256-5-geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-02-01 11:18:59 +05:30
..
Kconfig dmaengine: Kconfig: Update description for RCAR_DMAC config 2020-09-11 17:48:28 +05:30
Makefile dmaengine: sudmac: remove unused driver 2019-05-21 09:52:50 +05:30
rcar-dmac.c dmaengine: rcar-dmac: Add support for R-Car V3U 2021-02-01 11:18:59 +05:30
shdma-arm.h dmaengine: use SPDX identifier for Renesas drivers 2018-08-29 21:58:49 +05:30
shdma-base.c dmaengine: sh: drop double zeroing 2020-10-05 10:18:08 +05:30
shdma-of.c dmaengine: use SPDX identifier for Renesas drivers 2018-08-29 21:58:49 +05:30
shdma.h dmaengine: sh: Remove R-Mobile APE6 support 2018-12-05 13:01:54 +05:30
shdmac.c dmaengine: sh: Remove R-Mobile APE6 support 2018-12-05 13:01:54 +05:30
usb-dmac.c dmaengine: sh: usb-dmac: set tx_result parameters 2020-06-24 11:34:53 +05:30