[PATCH 3/4] mci: imx-esdhc: add DSR support

[Alexander Aring]

Hi,

On Tue, Jan 14, 2014 at 09:23:36AM +0100, Markus Niebel wrote:
> From: Markus Niebel <Markus.Niebel at tqs.de>
> 
> having DSR support in mci-core we need a way to
> forward the DSR value to the driver. Add it to
> platform data for imx-esdhc
> 
> TODO: implement the same for other host controller
> drivers
> 
> Signed-off-by: Markus Niebel <Markus.Niebel at tqs.de>
> ---
>  arch/arm/mach-imx/include/mach/esdhc.h |    2 ++
>  drivers/mci/imx-esdhc.c                |    4 ++++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/include/mach/esdhc.h b/arch/arm/mach-imx/include/mach/esdhc.h
> index add1691..fb7380a 100644
> --- a/arch/arm/mach-imx/include/mach/esdhc.h
> +++ b/arch/arm/mach-imx/include/mach/esdhc.h
> @@ -42,5 +42,7 @@ struct esdhc_platform_data {
>  	enum cd_types cd_type;
>  	unsigned caps;
>  	char *devname;
> +	unsigned dsr_val;
> +	int use_dsr;
>  };
>  #endif /* __ASM_ARCH_IMX_ESDHC_H */
> diff --git a/drivers/mci/imx-esdhc.c b/drivers/mci/imx-esdhc.c
> index 7664e7b..4c7a45e 100644
> --- a/drivers/mci/imx-esdhc.c
> +++ b/drivers/mci/imx-esdhc.c
> @@ -582,6 +582,10 @@ static int fsl_esdhc_probe(struct device_d *dev)
>  	if (host->mci.f_min < 200000)
>  		host->mci.f_min = 200000;
>  	host->mci.f_max = rate;
> +	if (pdata) {
> +		host->mci.use_dsr = pdata->use_dsr;
> +		host->mci.dsr_val = pdata->dsr_val;
> +	}
>  
I don't know what other barebox devs thinking about this. But I would
remove use_dsr attribute, because a dsr_val != 0 indicates that you want
to use dsr. You don't need a extra switch, in my opinion.

- Alex