[PATCH 3/6] sunxi: SPL SPI: Introduce is_new_gen_spi()

[Jagan Teki]

On Mon, Jan 6, 2020 at 6:59 AM Andre Przywara <andre.przywara at arm.com> wrote:
>
> So far we were using the CONFIG_SUNXI_GEN_SUN6I symbol to select between
> the two SPI controller generations used on Allwinner SoCs. This is a
> convenience symbol to roughly differentiate between "older" and "newer"
> generation of SoCs.
>
> The H6 SoCs is the newest SoC so far, but is sufficiently different to
> not define this symbol. However it is using a SPI controller compatible
> to the "new gen" SoCs.
>
> To prepare for H6 support, we replace the check for this single symbol
> with an explicit function, which can later be extended.
> For now we just return CONFIG_SUNXI_GEN_SUN6I in there, so this does not
> create a functional change.
>
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>  arch/arm/mach-sunxi/spl_spi_sunxi.c | 22 ++++++++++++++--------
>  1 file changed, 14 insertions(+), 8 deletions(-)
>
> diff --git a/arch/arm/mach-sunxi/spl_spi_sunxi.c b/arch/arm/mach-sunxi/spl_spi_sunxi.c
> index 5b4598a25b..b19f1bf4af 100644
> --- a/arch/arm/mach-sunxi/spl_spi_sunxi.c
> +++ b/arch/arm/mach-sunxi/spl_spi_sunxi.c
> @@ -100,9 +100,14 @@ static void spi0_pinmux_setup(unsigned int pin_function)
>                 sunxi_gpio_set_cfgpin(SUNXI_GPC(3), pin_function);
>  }
>
> +static bool is_new_gen_spi(void)
> +{
> +       return IS_ENABLED(CONFIG_SUNXI_GEN_SUN6I);
> +}

Doesn't it confusing? new gen is H6, but it returns 6I?