Re: [PATCH 7/7] dmaengine: sprd: Add interrupt support for 2-stage transfer
On Mon, 29 Apr 2019 at 22:10, Vinod Koul wrote: > > On 29-04-19, 20:11, Baolin Wang wrote: > > On Mon, 29 Apr 2019 at 20:01, Vinod Koul wrote: > > > On 15-04-19, 20:15, Baolin Wang wrote: > > > > > @@ -429,6 +433,9 @@ static int sprd_dma_set_2stage_config(struct > > > > sprd_dma_chn *schan) > > > > val = chn & SPRD_DMA_GLB_SRC_CHN_MASK; > > > > val |= BIT(schan->trg_mode - 1) << > > > > SPRD_DMA_GLB_TRG_OFFSET; > > > > val |= SPRD_DMA_GLB_2STAGE_EN; > > > > + if (schan->int_type != SPRD_DMA_NO_INT) > > > > > > Who configure int_type? > > > > The int_type is configured through the flags of > > sprd_dma_prep_slave_sg() by users, see: > > https://elixir.bootlin.com/linux/v5.1-rc6/source/include/linux/dma/sprd-dma.h#L9 > > Please use DMA_PREP_INTERRUPT flag instead! We can not use DMA_PREP_INTERRUPT flag, since we have some Spreadtrum specific DMA interrupt flags configured by users, which I think we have made a consensus before. See: https://elixir.bootlin.com/linux/v5.1-rc6/source/include/linux/dma/sprd-dma.h#L105 -- Baolin Wang Best Regards
Re: [PATCH 7/7] dmaengine: sprd: Add interrupt support for 2-stage transfer
On 29-04-19, 20:11, Baolin Wang wrote: > On Mon, 29 Apr 2019 at 20:01, Vinod Koul wrote: > > On 15-04-19, 20:15, Baolin Wang wrote: > > > @@ -429,6 +433,9 @@ static int sprd_dma_set_2stage_config(struct > > > sprd_dma_chn *schan) > > > val = chn & SPRD_DMA_GLB_SRC_CHN_MASK; > > > val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET; > > > val |= SPRD_DMA_GLB_2STAGE_EN; > > > + if (schan->int_type != SPRD_DMA_NO_INT) > > > > Who configure int_type? > > The int_type is configured through the flags of > sprd_dma_prep_slave_sg() by users, see: > https://elixir.bootlin.com/linux/v5.1-rc6/source/include/linux/dma/sprd-dma.h#L9 Please use DMA_PREP_INTERRUPT flag instead! -- ~Vinod
Re: [PATCH 7/7] dmaengine: sprd: Add interrupt support for 2-stage transfer
On Mon, 29 Apr 2019 at 20:01, Vinod Koul wrote: > > On 15-04-19, 20:15, Baolin Wang wrote: > > For 2-stage transfer, some users like Audio still need transaction interrupt > > to notify when the 2-stage transfer is completed. Thus we should enable > > 2-stage transfer interrupt to support this feature. > > > > Signed-off-by: Baolin Wang > > --- > > drivers/dma/sprd-dma.c | 22 +- > > 1 file changed, 21 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c > > index cc9c24d..4c18f44 100644 > > --- a/drivers/dma/sprd-dma.c > > +++ b/drivers/dma/sprd-dma.c > > @@ -62,6 +62,8 @@ > > /* SPRD_DMA_GLB_2STAGE_GRP register definition */ > > #define SPRD_DMA_GLB_2STAGE_EN BIT(24) > > #define SPRD_DMA_GLB_CHN_INT_MASKGENMASK(23, 20) > > +#define SPRD_DMA_GLB_DEST_INTBIT(22) > > +#define SPRD_DMA_GLB_SRC_INT BIT(20) > > #define SPRD_DMA_GLB_LIST_DONE_TRG BIT(19) > > #define SPRD_DMA_GLB_TRANS_DONE_TRG BIT(18) > > #define SPRD_DMA_GLB_BLOCK_DONE_TRG BIT(17) > > @@ -135,6 +137,7 @@ > > /* define DMA channel mode & trigger mode mask */ > > #define SPRD_DMA_CHN_MODE_MASK GENMASK(7, 0) > > #define SPRD_DMA_TRG_MODE_MASK GENMASK(7, 0) > > +#define SPRD_DMA_INT_TYPE_MASK GENMASK(7, 0) > > > > /* define the DMA transfer step type */ > > #define SPRD_DMA_NONE_STEP 0 > > @@ -190,6 +193,7 @@ struct sprd_dma_chn { > > u32 dev_id; > > enum sprd_dma_chn_mode chn_mode; > > enum sprd_dma_trg_mode trg_mode; > > + enum sprd_dma_int_type int_type; > > struct sprd_dma_desc*cur_desc; > > }; > > > > @@ -429,6 +433,9 @@ static int sprd_dma_set_2stage_config(struct > > sprd_dma_chn *schan) > > val = chn & SPRD_DMA_GLB_SRC_CHN_MASK; > > val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET; > > val |= SPRD_DMA_GLB_2STAGE_EN; > > + if (schan->int_type != SPRD_DMA_NO_INT) > > Who configure int_type? The int_type is configured through the flags of sprd_dma_prep_slave_sg() by users, see: https://elixir.bootlin.com/linux/v5.1-rc6/source/include/linux/dma/sprd-dma.h#L9 > > > + val |= SPRD_DMA_GLB_SRC_INT; > > + > > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP1, val, val); > > break; > > > > @@ -436,6 +443,9 @@ static int sprd_dma_set_2stage_config(struct > > sprd_dma_chn *schan) > > val = chn & SPRD_DMA_GLB_SRC_CHN_MASK; > > val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET; > > val |= SPRD_DMA_GLB_2STAGE_EN; > > + if (schan->int_type != SPRD_DMA_NO_INT) > > + val |= SPRD_DMA_GLB_SRC_INT; > > + > > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP2, val, val); > > break; > > > > @@ -443,6 +453,9 @@ static int sprd_dma_set_2stage_config(struct > > sprd_dma_chn *schan) > > val = (chn << SPRD_DMA_GLB_DEST_CHN_OFFSET) & > > SPRD_DMA_GLB_DEST_CHN_MASK; > > val |= SPRD_DMA_GLB_2STAGE_EN; > > + if (schan->int_type != SPRD_DMA_NO_INT) > > + val |= SPRD_DMA_GLB_DEST_INT; > > + > > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP1, val, val); > > break; > > > > @@ -450,6 +463,9 @@ static int sprd_dma_set_2stage_config(struct > > sprd_dma_chn *schan) > > val = (chn << SPRD_DMA_GLB_DEST_CHN_OFFSET) & > > SPRD_DMA_GLB_DEST_CHN_MASK; > > val |= SPRD_DMA_GLB_2STAGE_EN; > > + if (schan->int_type != SPRD_DMA_NO_INT) > > + val |= SPRD_DMA_GLB_DEST_INT; > > + > > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP2, val, val); > > break; > > > > @@ -911,11 +927,15 @@ static int sprd_dma_fill_linklist_desc(struct > > dma_chan *chan, > > schan->linklist.virt_addr = 0; > > } > > > > - /* Set channel mode and trigger mode for 2-stage transfer */ > > + /* > > + * Set channel mode, interrupt mode and trigger mode for 2-stage > > + * transfer. > > + */ > > schan->chn_mode = > > (flags >> SPRD_DMA_CHN_MODE_SHIFT) & SPRD_DMA_CHN_MODE_MASK; > > schan->trg_mode = > > (flags >> SPRD_DMA_TRG_MODE_SHIFT) & SPRD_DMA_TRG_MODE_MASK; > > + schan->int_type = flags & SPRD_DMA_INT_TYPE_MASK; > > > > sdesc = kzalloc(sizeof(*sdesc), GFP_NOWAIT); > > if (!sdesc) > > -- > > 1.7.9.5 > > -- > ~Vinod -- Baolin Wang Best Regards
Re: [PATCH 7/7] dmaengine: sprd: Add interrupt support for 2-stage transfer
On 15-04-19, 20:15, Baolin Wang wrote: > For 2-stage transfer, some users like Audio still need transaction interrupt > to notify when the 2-stage transfer is completed. Thus we should enable > 2-stage transfer interrupt to support this feature. > > Signed-off-by: Baolin Wang > --- > drivers/dma/sprd-dma.c | 22 +- > 1 file changed, 21 insertions(+), 1 deletion(-) > > diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c > index cc9c24d..4c18f44 100644 > --- a/drivers/dma/sprd-dma.c > +++ b/drivers/dma/sprd-dma.c > @@ -62,6 +62,8 @@ > /* SPRD_DMA_GLB_2STAGE_GRP register definition */ > #define SPRD_DMA_GLB_2STAGE_EN BIT(24) > #define SPRD_DMA_GLB_CHN_INT_MASKGENMASK(23, 20) > +#define SPRD_DMA_GLB_DEST_INTBIT(22) > +#define SPRD_DMA_GLB_SRC_INT BIT(20) > #define SPRD_DMA_GLB_LIST_DONE_TRG BIT(19) > #define SPRD_DMA_GLB_TRANS_DONE_TRG BIT(18) > #define SPRD_DMA_GLB_BLOCK_DONE_TRG BIT(17) > @@ -135,6 +137,7 @@ > /* define DMA channel mode & trigger mode mask */ > #define SPRD_DMA_CHN_MODE_MASK GENMASK(7, 0) > #define SPRD_DMA_TRG_MODE_MASK GENMASK(7, 0) > +#define SPRD_DMA_INT_TYPE_MASK GENMASK(7, 0) > > /* define the DMA transfer step type */ > #define SPRD_DMA_NONE_STEP 0 > @@ -190,6 +193,7 @@ struct sprd_dma_chn { > u32 dev_id; > enum sprd_dma_chn_mode chn_mode; > enum sprd_dma_trg_mode trg_mode; > + enum sprd_dma_int_type int_type; > struct sprd_dma_desc*cur_desc; > }; > > @@ -429,6 +433,9 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn > *schan) > val = chn & SPRD_DMA_GLB_SRC_CHN_MASK; > val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET; > val |= SPRD_DMA_GLB_2STAGE_EN; > + if (schan->int_type != SPRD_DMA_NO_INT) Who configure int_type? > + val |= SPRD_DMA_GLB_SRC_INT; > + > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP1, val, val); > break; > > @@ -436,6 +443,9 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn > *schan) > val = chn & SPRD_DMA_GLB_SRC_CHN_MASK; > val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET; > val |= SPRD_DMA_GLB_2STAGE_EN; > + if (schan->int_type != SPRD_DMA_NO_INT) > + val |= SPRD_DMA_GLB_SRC_INT; > + > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP2, val, val); > break; > > @@ -443,6 +453,9 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn > *schan) > val = (chn << SPRD_DMA_GLB_DEST_CHN_OFFSET) & > SPRD_DMA_GLB_DEST_CHN_MASK; > val |= SPRD_DMA_GLB_2STAGE_EN; > + if (schan->int_type != SPRD_DMA_NO_INT) > + val |= SPRD_DMA_GLB_DEST_INT; > + > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP1, val, val); > break; > > @@ -450,6 +463,9 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn > *schan) > val = (chn << SPRD_DMA_GLB_DEST_CHN_OFFSET) & > SPRD_DMA_GLB_DEST_CHN_MASK; > val |= SPRD_DMA_GLB_2STAGE_EN; > + if (schan->int_type != SPRD_DMA_NO_INT) > + val |= SPRD_DMA_GLB_DEST_INT; > + > sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP2, val, val); > break; > > @@ -911,11 +927,15 @@ static int sprd_dma_fill_linklist_desc(struct dma_chan > *chan, > schan->linklist.virt_addr = 0; > } > > - /* Set channel mode and trigger mode for 2-stage transfer */ > + /* > + * Set channel mode, interrupt mode and trigger mode for 2-stage > + * transfer. > + */ > schan->chn_mode = > (flags >> SPRD_DMA_CHN_MODE_SHIFT) & SPRD_DMA_CHN_MODE_MASK; > schan->trg_mode = > (flags >> SPRD_DMA_TRG_MODE_SHIFT) & SPRD_DMA_TRG_MODE_MASK; > + schan->int_type = flags & SPRD_DMA_INT_TYPE_MASK; > > sdesc = kzalloc(sizeof(*sdesc), GFP_NOWAIT); > if (!sdesc) > -- > 1.7.9.5 -- ~Vinod