Re: [PATCH v1 2/6] dmaengine: dw-edma: Introduce helpers for getting the eDMA/HDMA max channel count

[Dmitry Baryshkov]

On Fri, 19 Jan 2024 at 15:00, Mrinmay Sarkar <quic_msarkar@xxxxxxxxxxx> wrote:
>
> From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
>
> Add common helpers for getting the eDMA/HDMA max channel count.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> Signed-off-by: Mrinmay Sarkar <quic_msarkar@xxxxxxxxxxx>
> ---
>  drivers/dma/dw-edma/dw-edma-core.c           | 18 ++++++++++++++++++
>  drivers/pci/controller/dwc/pcie-designware.c |  6 +++---
>  include/linux/dma/edma.h                     | 14 ++++++++++++++
>  3 files changed, 35 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
> index 7fe1c19..2bd6e43 100644
> --- a/drivers/dma/dw-edma/dw-edma-core.c
> +++ b/drivers/dma/dw-edma/dw-edma-core.c
> @@ -902,6 +902,24 @@ static int dw_edma_irq_request(struct dw_edma *dw,
>         return err;
>  }
>
> +static u32 dw_edma_get_max_ch(enum dw_edma_map_format mf, enum dw_edma_dir dir)
> +{
> +       if (mf == EDMA_MF_HDMA_NATIVE)
> +               return HDMA_MAX_NR_CH;

This will break unless patch 5 is applied. Please move the
corresponding definition to this path.

> +
> +       return dir == EDMA_DIR_WRITE ? EDMA_MAX_WR_CH : EDMA_MAX_RD_CH;
> +}
> +
> +u32 dw_edma_get_max_rd_ch(enum dw_edma_map_format mf)
> +{
> +       return dw_edma_get_max_ch(mf, EDMA_DIR_READ);
> +}
> +
> +u32 dw_edma_get_max_wr_ch(enum dw_edma_map_format mf)
> +{
> +       return dw_edma_get_max_ch(mf, EDMA_DIR_WRITE);
> +}
> +
>  int dw_edma_probe(struct dw_edma_chip *chip)
>  {
>         struct device *dev;


-- 
With best wishes
Dmitry