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| author | Biju Das <biju.das.jz@bp.renesas.com> | 2026-03-16 15:32:51 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-03-17 16:12:11 +0530 |
| commit | 21323b118c16d287355e6497e1098ce1ca348bd6 (patch) | |
| tree | e5c3e14bc330733a7afdcc1dea7c67028ab975b5 /rust/kernel/interop/git@git.tavy.me:linux-stable.git | |
| parent | bfaa60be647842cece968769f208e57fa5dee594 (diff) | |
dmaengine: sh: rz-dmac: Add device_tx_status() callback
The RZ/G2L SCIFA driver uses dmaengine_prep_slave_sg() to enqueue DMA
transfers and implements a timeout mechanism on RX to handle cases where
a DMA transfer does not complete. The timeout is implemented using an
hrtimer.
In the hrtimer callback, dmaengine_tx_status() is called (along with
dmaengine_pause()) to retrieve the transfer residue and handle incomplete
DMA transfers.
Add support for the device_tx_status() callback.
Co-developed-by: Long Luu <long.luu.ur@renesas.com>
Signed-off-by: Long Luu <long.luu.ur@renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Co-developed-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260316133252.240348-8-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'rust/kernel/interop/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions