linux-kernel - Re: [PATCH v5] atmel_flexcom: Support backup mode

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Date:   Mon, 23 Oct 2017 17:06:00 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Romain Izard <romain.izard.pro@...il.com>
Cc:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5] atmel_flexcom: Support backup mode

On Thu, 19 Oct 2017, Romain Izard wrote:

> The controller used by a flexcom module is configured at boot, and left
> alone after this. As the configuration will be lost after backup mode,
> restore the state of the flexcom driver on resume.
> 
> Signed-off-by: Romain Izard <romain.izard.pro@...il.com>
> Acked-by: Nicolas Ferre <nicolas.ferre@...rochip.com>
> Tested-by: Nicolas Ferre <nicolas.ferre@...rochip.com>
> ---
> Changes in v5:
> * extract from the patch series, and send as a standalone patch
> 
>  drivers/mfd/atmel-flexcom.c | 65 ++++++++++++++++++++++++++++++++++-----------
>  1 file changed, 50 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/mfd/atmel-flexcom.c b/drivers/mfd/atmel-flexcom.c
> index 064bde9cff5a..ef1235c4a179 100644
> --- a/drivers/mfd/atmel-flexcom.c
> +++ b/drivers/mfd/atmel-flexcom.c
> @@ -39,34 +39,44 @@
>  #define FLEX_MR_OPMODE(opmode)	(((opmode) << FLEX_MR_OPMODE_OFFSET) &	\
>  				 FLEX_MR_OPMODE_MASK)
>  
> +struct atmel_flexcom {
> +	void __iomem *base;
> +	u32 opmode;
> +	struct clk *clk;
> +};
>  
>  static int atmel_flexcom_probe(struct platform_device *pdev)
>  {
>  	struct device_node *np = pdev->dev.of_node;
> -	struct clk *clk;
>  	struct resource *res;
> -	void __iomem *base;
> -	u32 opmode;
> +	struct atmel_flexcom *afc;

Nit: I'd prefer if you call this 'ddata'.

But the concept and implementation is fine, so if you're going to
change it please do so and apply my:

Acked-by: Lee Jones <lee.jones@...aro.org>

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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