Re: [PATCHv9 08/12] PCI: mobiveil: Add 8-bit and 16-bit CSR register accessors

Andrew Murray
2020-01-13T11:31:42Z

On Wed, Nov 20, 2019 at 03:46:10AM +0000, Z.q. Hou wrote:
> From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
>
> There are some 8-bit and 16-bit registers in PCIe configuration
> space, so add these accessors accordingly.
>
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
> ---
> V9:
> - No change
>
> .../pci/controller/mobiveil/pcie-mobiveil.h | 23 +++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
> index 37116c2a19fe..750a7fd95bc1 100644
> --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h
> +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
> @@ -182,10 +182,33 @@ static inline u32 mobiveil_csr_readl(struct mobiveil_pcie *pcie, u32 off)
> return mobiveil_csr_read(pcie, off, 0x4);
> }
>
> +static inline u32 mobiveil_csr_readw(struct mobiveil_pcie *pcie, u32 off)
> +{
> + return mobiveil_csr_read(pcie, off, 0x2);
> +}
> +
> +static inline u32 mobiveil_csr_readb(struct mobiveil_pcie *pcie, u32 off)
> +{
> + return mobiveil_csr_read(pcie, off, 0x1);
> +}

Do you think the above two return types should reflect the size of the access?

Thanks,

Andrew Murray

> +
> +
> static inline void mobiveil_csr_writel(struct mobiveil_pcie *pcie, u32 val,
> u32 off)
> {
> mobiveil_csr_write(pcie, val, off, 0x4);
> }
>
> +static inline void mobiveil_csr_writew(struct mobiveil_pcie *pcie, u32 val,
> + u32 off)
> +{
> + mobiveil_csr_write(pcie, val, off, 0x2);
> +}
> +
> +static inline void mobiveil_csr_writeb(struct mobiveil_pcie *pcie, u32 val,
> + u32 off)
> +{
> + mobiveil_csr_write(pcie, val, off, 0x1);
> +}
> +
> #endif /* _PCIE_MOBIVEIL_H */
> --
> 2.17.1
>