linux-kernel - Re: [PATCH 4/9] mmc: sdhci-sprd: Implement the get_max_timeout

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Date:   Mon, 3 Jun 2019 15:34:38 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Baolin Wang <baolin.wang@...aro.org>, ulf.hansson@...aro.org,
        zhang.lyra@...il.com, orsonzhai@...il.com, robh+dt@...nel.org,
        mark.rutland@....com, arnd@...db.de, olof@...om.net
Cc:     vincent.guittot@...aro.org, arm@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 4/9] mmc: sdhci-sprd: Implement the
 get_max_timeout_count() interface

On 20/05/19 1:11 PM, Baolin Wang wrote:
> Implement the get_max_timeout_count() interface to set the Spredtrum SD
> host controller actual maximum timeout count.
> 
> Signed-off-by: Baolin Wang <baolin.wang@...aro.org>

Seems surprising that there isn't a custom ->set_timeout() as well.
Nevertheless:

Acked-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
>  drivers/mmc/host/sdhci-sprd.c |    7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
> index 31ba7d6..d91281d 100644
> --- a/drivers/mmc/host/sdhci-sprd.c
> +++ b/drivers/mmc/host/sdhci-sprd.c
> @@ -285,6 +285,12 @@ static void sdhci_sprd_hw_reset(struct sdhci_host *host)
>  	usleep_range(300, 500);
>  }
>  
> +static unsigned int sdhci_sprd_get_max_timeout_count(struct sdhci_host *host)
> +{
> +	/* The Spredtrum controller actual maximum timeout count is 1 << 31 */
> +	return 1 << 31;
> +}
> +
>  static struct sdhci_ops sdhci_sprd_ops = {
>  	.read_l = sdhci_sprd_readl,
>  	.write_l = sdhci_sprd_writel,
> @@ -296,6 +302,7 @@ static void sdhci_sprd_hw_reset(struct sdhci_host *host)
>  	.reset = sdhci_reset,
>  	.set_uhs_signaling = sdhci_sprd_set_uhs_signaling,
>  	.hw_reset = sdhci_sprd_hw_reset,
> +	.get_max_timeout_count = sdhci_sprd_get_max_timeout_count,
>  };
>  
>  static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
>