[v5,0/2] spi: dw: DW SPI DMA Driver updates

Message

Joy Chakraborty March 30, 2023, 6:34 a.m. UTC

This Patch series adds support for 32 bits per word trasfers using DMA
and some defensive checks around dma controller capabilities.
---
V1 Changes : Add support for AxSize=4 bytes to support 32bits/word.
---
V1->V2 Changes : Add dma capability check to make sure address widths
are supported.
---
V2->V3 Changes : Split changes , add DMA direction check and other
cosmetic chnages.
---
V3->V4 Changes : Fix Sparce Warning
| Reported-by: kernel test robot <[e-mail]>
| Link: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
---
V4->V5 Changes : Preserve reverse xmas Tree order, move direction
check before initalisation of further capabilities, remove zero
initialisations, remove error OR'ing.
---

Joy Chakraborty (2):
  spi: dw: Add 32 bpw support to DW DMA Controller
  spi: dw: Add dma controller capability checks

 drivers/spi/spi-dw-dma.c | 70 ++++++++++++++++++++++++++++++++--------
 drivers/spi/spi-dw.h     |  1 +
 2 files changed, 57 insertions(+), 14 deletions(-)

Comments

Serge Semin April 11, 2023, 5:12 a.m. UTC | #1

Cc+=Andy

On Thu, Mar 30, 2023 at 06:34:48AM +0000, Joy Chakraborty wrote:
> This Patch series adds support for 32 bits per word trasfers using DMA
> and some defensive checks around dma controller capabilities.
> ---
> V1 Changes : Add support for AxSize=4 bytes to support 32bits/word.
> ---
> V1->V2 Changes : Add dma capability check to make sure address widths
> are supported.
> ---
> V2->V3 Changes : Split changes , add DMA direction check and other
> cosmetic chnages.
> ---
> V3->V4 Changes : Fix Sparce Warning
> | Reported-by: kernel test robot <[e-mail]>
> | Link: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
> ---
> V4->V5 Changes : Preserve reverse xmas Tree order, move direction
> check before initalisation of further capabilities, remove zero
> initialisations, remove error OR'ing.

The series looks good to me now. Though if I were you I would have
split up the last patch into two ones.

Anyway I tested the patchset on Baikal-T1 SoC with DW APB SSI 3.22b +
DW DMAC 2.18b and looped back SPI-interface. So feel free to add:
Tested-by: Serge Semin <[e-mail]>
Reviewed-by: Serge Semin <[e-mail]>

@Andy, anything to add from your side?
@Mark, if you are ok with the series content please merge in.

-Serge(y)

> ---
> 
> Joy Chakraborty (2):
>   spi: dw: Add 32 bpw support to DW DMA Controller
>   spi: dw: Add dma controller capability checks
> 
>  drivers/spi/spi-dw-dma.c | 70 ++++++++++++++++++++++++++++++++--------
>  drivers/spi/spi-dw.h     |  1 +
>  2 files changed, 57 insertions(+), 14 deletions(-)
> 
> -- 
> 2.40.0.423.gd6c402a77b-goog
>

Andy Shevchenko April 11, 2023, 12:11 p.m. UTC | #2

On Tue, Apr 11, 2023 at 08:12:33AM +0300, Serge Semin wrote:
> Cc+=Andy

Thank for Cc'ing me. I'll go through individual patches and give my comments
if any.

> On Thu, Mar 30, 2023 at 06:34:48AM +0000, Joy Chakraborty wrote:
> > This Patch series adds support for 32 bits per word trasfers using DMA
> > and some defensive checks around dma controller capabilities.
> > ---
> > V1 Changes : Add support for AxSize=4 bytes to support 32bits/word.
> > ---
> > V1->V2 Changes : Add dma capability check to make sure address widths
> > are supported.
> > ---
> > V2->V3 Changes : Split changes , add DMA direction check and other
> > cosmetic chnages.
> > ---
> > V3->V4 Changes : Fix Sparce Warning
> > | Reported-by: kernel test robot <[e-mail]>
> > | Link: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
> > ---
> > V4->V5 Changes : Preserve reverse xmas Tree order, move direction
> > check before initalisation of further capabilities, remove zero
> > initialisations, remove error OR'ing.
> 
> The series looks good to me now. Though if I were you I would have
> split up the last patch into two ones.
> 
> Anyway I tested the patchset on Baikal-T1 SoC with DW APB SSI 3.22b +
> DW DMAC 2.18b and looped back SPI-interface. So feel free to add:
> Tested-by: Serge Semin <[e-mail]>
> Reviewed-by: Serge Semin <[e-mail]>
> 
> @Andy, anything to add from your side?
> @Mark, if you are ok with the series content please merge in.