linux-kernel - Re: [PATCH v4 04/13] media: rc: sunxi: Add RXSTA bits definition

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Date:   Wed, 5 Jun 2019 11:51:41 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Clément Péron <peron.clem@...il.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH v4 04/13] media: rc: sunxi: Add RXSTA bits definition

On Tue, Jun 04, 2019 at 06:29:50PM +0200, Clément Péron wrote:
> We are using RXINT bits definition when looking at RXSTA register.
>
> These bits are equal but it's not really proper.
>
> Introduce the RXSTA bits and use them to have coherency.
>
> Signed-off-by: Clément Péron <peron.clem@...il.com>
> ---
>  drivers/media/rc/sunxi-cir.c | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/rc/sunxi-cir.c b/drivers/media/rc/sunxi-cir.c
> index 0504ebfc831f..572bd2257d35 100644
> --- a/drivers/media/rc/sunxi-cir.c
> +++ b/drivers/media/rc/sunxi-cir.c
> @@ -48,11 +48,11 @@
>
>  /* Rx Interrupt Enable */
>  #define SUNXI_IR_RXINT_REG    0x2C
> -/* Rx FIFO Overflow */
> +/* Rx FIFO Overflow Interrupt Enable */
>  #define REG_RXINT_ROI_EN		BIT(0)
> -/* Rx Packet End */
> +/* Rx Packet End Interrupt Enable */
>  #define REG_RXINT_RPEI_EN		BIT(1)
> -/* Rx FIFO Data Available */
> +/* Rx FIFO Data Available Interrupt Enable */
>  #define REG_RXINT_RAI_EN		BIT(4)
>
>  /* Rx FIFO available byte level */
> @@ -60,6 +60,12 @@
>
>  /* Rx Interrupt Status */
>  #define SUNXI_IR_RXSTA_REG    0x30
> +/* Rx FIFO Overflow */
> +#define REG_RXSTA_ROI			BIT(0)
> +/* Rx Packet End */
> +#define REG_RXSTA_RPE			BIT(1)
> +/* Rx FIFO Data Available */
> +#define REG_RXSTA_RA			BIT(4)

I'm fine with it on principle, but if the consistency needs to be
maintained then we could just reuse the above defines

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com