* [PATCH] dma: omap-dma: Implement device_slave_caps callback
@ 2014-03-07 13:36 Peter Ujfalusi
2014-03-12 17:37 ` Tony Lindgren
2014-03-29 13:36 ` Vinod Koul
0 siblings, 2 replies; 5+ messages in thread
From: Peter Ujfalusi @ 2014-03-07 13:36 UTC (permalink / raw)
To: vinod.koul, dan.j.williams
Cc: dmaengine, linux-kernel, linux, linux-omap, tony
With the callback implemented omap-dma can provide information to client
drivers regarding to supported address widths, directions, residue
granularity, etc.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/dma/omap-dma.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
index 64ceca2920b8..b19f04f4390b 100644
--- a/drivers/dma/omap-dma.c
+++ b/drivers/dma/omap-dma.c
@@ -1088,6 +1088,23 @@ static void omap_dma_free(struct omap_dmadev *od)
}
}
+#define OMAP_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
+ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
+ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
+
+static int omap_dma_device_slave_caps(struct dma_chan *dchan,
+ struct dma_slave_caps *caps)
+{
+ caps->src_addr_widths = OMAP_DMA_BUSWIDTHS;
+ caps->dstn_addr_widths = OMAP_DMA_BUSWIDTHS;
+ caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ caps->cmd_pause = true;
+ caps->cmd_terminate = true;
+ caps->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+
+ return 0;
+}
+
static int omap_dma_probe(struct platform_device *pdev)
{
struct omap_dmadev *od;
@@ -1118,6 +1135,7 @@ static int omap_dma_probe(struct platform_device *pdev)
od->ddev.device_prep_slave_sg = omap_dma_prep_slave_sg;
od->ddev.device_prep_dma_cyclic = omap_dma_prep_dma_cyclic;
od->ddev.device_control = omap_dma_control;
+ od->ddev.device_slave_caps = omap_dma_device_slave_caps;
od->ddev.dev = &pdev->dev;
INIT_LIST_HEAD(&od->ddev.channels);
INIT_LIST_HEAD(&od->pending);
--
1.9.0
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] dma: omap-dma: Implement device_slave_caps callback
2014-03-07 13:36 [PATCH] dma: omap-dma: Implement device_slave_caps callback Peter Ujfalusi
@ 2014-03-12 17:37 ` Tony Lindgren
2014-03-13 7:48 ` Peter Ujfalusi
2014-03-29 13:36 ` Vinod Koul
1 sibling, 1 reply; 5+ messages in thread
From: Tony Lindgren @ 2014-03-12 17:37 UTC (permalink / raw)
To: Peter Ujfalusi
Cc: vinod.koul, dan.j.williams, dmaengine, linux-kernel, linux,
linux-omap
* Peter Ujfalusi <peter.ujfalusi@ti.com> [140307 05:39]:
> With the callback implemented omap-dma can provide information to client
> drivers regarding to supported address widths, directions, residue
> granularity, etc.
This may need some testing against linux next with Russell's
omap-dma.c clean-up series merged there. Peter, care to check
if this patch is still valid against linux next?
Regards,
Tony
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
> ---
> drivers/dma/omap-dma.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
> index 64ceca2920b8..b19f04f4390b 100644
> --- a/drivers/dma/omap-dma.c
> +++ b/drivers/dma/omap-dma.c
> @@ -1088,6 +1088,23 @@ static void omap_dma_free(struct omap_dmadev *od)
> }
> }
>
> +#define OMAP_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
> + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
> + BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
> +
> +static int omap_dma_device_slave_caps(struct dma_chan *dchan,
> + struct dma_slave_caps *caps)
> +{
> + caps->src_addr_widths = OMAP_DMA_BUSWIDTHS;
> + caps->dstn_addr_widths = OMAP_DMA_BUSWIDTHS;
> + caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
> + caps->cmd_pause = true;
> + caps->cmd_terminate = true;
> + caps->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
> +
> + return 0;
> +}
> +
> static int omap_dma_probe(struct platform_device *pdev)
> {
> struct omap_dmadev *od;
> @@ -1118,6 +1135,7 @@ static int omap_dma_probe(struct platform_device *pdev)
> od->ddev.device_prep_slave_sg = omap_dma_prep_slave_sg;
> od->ddev.device_prep_dma_cyclic = omap_dma_prep_dma_cyclic;
> od->ddev.device_control = omap_dma_control;
> + od->ddev.device_slave_caps = omap_dma_device_slave_caps;
> od->ddev.dev = &pdev->dev;
> INIT_LIST_HEAD(&od->ddev.channels);
> INIT_LIST_HEAD(&od->pending);
> --
> 1.9.0
>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] dma: omap-dma: Implement device_slave_caps callback
2014-03-12 17:37 ` Tony Lindgren
@ 2014-03-13 7:48 ` Peter Ujfalusi
2014-03-13 16:25 ` Tony Lindgren
0 siblings, 1 reply; 5+ messages in thread
From: Peter Ujfalusi @ 2014-03-13 7:48 UTC (permalink / raw)
To: Tony Lindgren
Cc: vinod.koul, dan.j.williams, dmaengine, linux-kernel, linux,
linux-omap
Hi Tony,
On 03/12/2014 07:37 PM, Tony Lindgren wrote:
> * Peter Ujfalusi <peter.ujfalusi@ti.com> [140307 05:39]:
>> With the callback implemented omap-dma can provide information to client
>> drivers regarding to supported address widths, directions, residue
>> granularity, etc.
>
> This may need some testing against linux next with Russell's
> omap-dma.c clean-up series merged there. Peter, care to check
> if this patch is still valid against linux next?
The patch applies cleanly on top of linux-next fetched yesterday and I see
Russell's patches underneath.
--
Péter
>
> Regards,
>
> Tony
>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>> ---
>> drivers/dma/omap-dma.c | 18 ++++++++++++++++++
>> 1 file changed, 18 insertions(+)
>>
>> diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
>> index 64ceca2920b8..b19f04f4390b 100644
>> --- a/drivers/dma/omap-dma.c
>> +++ b/drivers/dma/omap-dma.c
>> @@ -1088,6 +1088,23 @@ static void omap_dma_free(struct omap_dmadev *od)
>> }
>> }
>>
>> +#define OMAP_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
>> + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
>> + BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
>> +
>> +static int omap_dma_device_slave_caps(struct dma_chan *dchan,
>> + struct dma_slave_caps *caps)
>> +{
>> + caps->src_addr_widths = OMAP_DMA_BUSWIDTHS;
>> + caps->dstn_addr_widths = OMAP_DMA_BUSWIDTHS;
>> + caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
>> + caps->cmd_pause = true;
>> + caps->cmd_terminate = true;
>> + caps->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
>> +
>> + return 0;
>> +}
>> +
>> static int omap_dma_probe(struct platform_device *pdev)
>> {
>> struct omap_dmadev *od;
>> @@ -1118,6 +1135,7 @@ static int omap_dma_probe(struct platform_device *pdev)
>> od->ddev.device_prep_slave_sg = omap_dma_prep_slave_sg;
>> od->ddev.device_prep_dma_cyclic = omap_dma_prep_dma_cyclic;
>> od->ddev.device_control = omap_dma_control;
>> + od->ddev.device_slave_caps = omap_dma_device_slave_caps;
>> od->ddev.dev = &pdev->dev;
>> INIT_LIST_HEAD(&od->ddev.channels);
>> INIT_LIST_HEAD(&od->pending);
>> --
>> 1.9.0
>>
--
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^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] dma: omap-dma: Implement device_slave_caps callback
2014-03-13 7:48 ` Peter Ujfalusi
@ 2014-03-13 16:25 ` Tony Lindgren
0 siblings, 0 replies; 5+ messages in thread
From: Tony Lindgren @ 2014-03-13 16:25 UTC (permalink / raw)
To: Peter Ujfalusi
Cc: vinod.koul, dan.j.williams, dmaengine, linux-kernel, linux,
linux-omap
* Peter Ujfalusi <peter.ujfalusi@ti.com> [140313 00:52]:
> Hi Tony,
>
> On 03/12/2014 07:37 PM, Tony Lindgren wrote:
> > * Peter Ujfalusi <peter.ujfalusi@ti.com> [140307 05:39]:
> >> With the callback implemented omap-dma can provide information to client
> >> drivers regarding to supported address widths, directions, residue
> >> granularity, etc.
> >
> > This may need some testing against linux next with Russell's
> > omap-dma.c clean-up series merged there. Peter, care to check
> > if this patch is still valid against linux next?
>
> The patch applies cleanly on top of linux-next fetched yesterday and I see
> Russell's patches underneath.
OK thanks for testing:
Acked-by: Tony Lindgren <tony@atomide.com>
> > Regards,
> >
> > Tony
> >
> >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
> >> ---
> >> drivers/dma/omap-dma.c | 18 ++++++++++++++++++
> >> 1 file changed, 18 insertions(+)
> >>
> >> diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
> >> index 64ceca2920b8..b19f04f4390b 100644
> >> --- a/drivers/dma/omap-dma.c
> >> +++ b/drivers/dma/omap-dma.c
> >> @@ -1088,6 +1088,23 @@ static void omap_dma_free(struct omap_dmadev *od)
> >> }
> >> }
> >>
> >> +#define OMAP_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
> >> + BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
> >> + BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
> >> +
> >> +static int omap_dma_device_slave_caps(struct dma_chan *dchan,
> >> + struct dma_slave_caps *caps)
> >> +{
> >> + caps->src_addr_widths = OMAP_DMA_BUSWIDTHS;
> >> + caps->dstn_addr_widths = OMAP_DMA_BUSWIDTHS;
> >> + caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
> >> + caps->cmd_pause = true;
> >> + caps->cmd_terminate = true;
> >> + caps->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
> >> +
> >> + return 0;
> >> +}
> >> +
> >> static int omap_dma_probe(struct platform_device *pdev)
> >> {
> >> struct omap_dmadev *od;
> >> @@ -1118,6 +1135,7 @@ static int omap_dma_probe(struct platform_device *pdev)
> >> od->ddev.device_prep_slave_sg = omap_dma_prep_slave_sg;
> >> od->ddev.device_prep_dma_cyclic = omap_dma_prep_dma_cyclic;
> >> od->ddev.device_control = omap_dma_control;
> >> + od->ddev.device_slave_caps = omap_dma_device_slave_caps;
> >> od->ddev.dev = &pdev->dev;
> >> INIT_LIST_HEAD(&od->ddev.channels);
> >> INIT_LIST_HEAD(&od->pending);
> >> --
> >> 1.9.0
> >>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] dma: omap-dma: Implement device_slave_caps callback
2014-03-07 13:36 [PATCH] dma: omap-dma: Implement device_slave_caps callback Peter Ujfalusi
2014-03-12 17:37 ` Tony Lindgren
@ 2014-03-29 13:36 ` Vinod Koul
1 sibling, 0 replies; 5+ messages in thread
From: Vinod Koul @ 2014-03-29 13:36 UTC (permalink / raw)
To: Peter Ujfalusi
Cc: dan.j.williams, dmaengine, linux-kernel, linux, linux-omap, tony
On Fri, Mar 07, 2014 at 03:36:44PM +0200, Peter Ujfalusi wrote:
> With the callback implemented omap-dma can provide information to client
> drivers regarding to supported address widths, directions, residue
> granularity, etc.
>
Applied, thanks
--
~Vinod
^ permalink raw reply [flat|nested] 5+ messages in thread
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2014-03-07 13:36 [PATCH] dma: omap-dma: Implement device_slave_caps callback Peter Ujfalusi
2014-03-12 17:37 ` Tony Lindgren
2014-03-13 7:48 ` Peter Ujfalusi
2014-03-13 16:25 ` Tony Lindgren
2014-03-29 13:36 ` Vinod Koul
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