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dmaengine: dw-edma: Add non_ll_start() callback

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Add a non_ll_start() callback and move the common non-linked-list channel
handling into the EDMA core so it can be shared by both the EDMA and HDMA.
Prepare for the upcoming reorganization of the burst and chunk structures.

Tested-by: Koichiro Den <den@valinux.co.jp>
Tested-By: Devendra Verma <devendra.verma@amd.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260713-edma_ll-v7-7-6fb7498c901e@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Frank Li 2026-07-13 13:03:25 -04:00 committed by Vinod Koul
parent 2cc7ba6b16
commit de60121a08
2 changed files with 15 additions and 20 deletions
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12
drivers/dma/dw-edma/dw-edma-core.h
View File

@ -126,6 +126,7 @@ struct dw_edma_core_ops {
irqreturn_t (*handle_int)(struct dw_edma_irq *dw_irq, enum dw_edma_dir dir,
dw_edma_handler_t done, dw_edma_handler_t abort);
void (*start)(struct dw_edma_chunk *chunk, bool first);
void (*non_ll_start)(struct dw_edma_chan *chan, struct dw_edma_burst *child);
void (*ll_data)(struct dw_edma_chan *chan, struct dw_edma_burst *burst,
u32 idx, bool cb, bool irq);
void (*ll_link)(struct dw_edma_chan *chan, u32 idx, bool cb, u64 addr);
@ -201,7 +202,16 @@ dw_edma_core_handle_int(struct dw_edma_irq *dw_irq, enum dw_edma_dir dir,
static inline
void dw_edma_core_start(struct dw_edma *dw, struct dw_edma_chunk *chunk, bool first)
{
dw->core->start(chunk, first);
if (chunk->chan->non_ll) {
struct dw_edma_burst *child;
child = list_first_entry_or_null(&chunk->burst->list,
struct dw_edma_burst, list);
if (child)
dw->core->non_ll_start(chunk->chan, child);
} else {
dw->core->start(chunk, first);
}
}
static inline

23
drivers/dma/dw-edma/dw-hdma-v0-core.c
View File

@ -272,18 +272,12 @@ static void dw_hdma_v0_core_ll_start(struct dw_edma_chunk *chunk, bool first)
SET_CH_32(dw, chan->dir, chan->id, doorbell, HDMA_V0_DOORBELL_START);
}
static void dw_hdma_v0_core_non_ll_start(struct dw_edma_chunk *chunk)
static void dw_hdma_v0_core_non_ll_start(struct dw_edma_chan *chan,
struct dw_edma_burst *child)
{
struct dw_edma_chan *chan = chunk->chan;
struct dw_edma *dw = chan->dw;
struct dw_edma_burst *child;
u32 val;
child = list_first_entry_or_null(&chunk->burst->list,
struct dw_edma_burst, list);
if (!child)
return;
SET_CH_32(dw, chan->dir, chan->id, ch_en, HDMA_V0_CH_EN);
/* Source address */
@ -324,16 +318,6 @@ static void dw_hdma_v0_core_non_ll_start(struct dw_edma_chunk *chunk)
HDMA_V0_DOORBELL_START);
}
static void dw_hdma_v0_core_start(struct dw_edma_chunk *chunk, bool first)
{
struct dw_edma_chan *chan = chunk->chan;
if (chan->non_ll)
dw_hdma_v0_core_non_ll_start(chunk);
else
dw_hdma_v0_core_ll_start(chunk, first);
}
static void dw_hdma_v0_core_ch_config(struct dw_edma_chan *chan)
{
struct dw_edma *dw = chan->dw;
@ -399,7 +383,8 @@ static const struct dw_edma_core_ops dw_hdma_v0_core = {
.ch_count = dw_hdma_v0_core_ch_count,
.ch_status = dw_hdma_v0_core_ch_status,
.handle_int = dw_hdma_v0_core_handle_int,
.start = dw_hdma_v0_core_start,
.start = dw_hdma_v0_core_ll_start,
.non_ll_start = dw_hdma_v0_core_non_ll_start,
.ll_data = dw_hdma_v0_core_ll_data,
.ll_link = dw_hdma_v0_core_ll_link,
.ch_doorbell = dw_hdma_v0_core_ch_doorbell,