linux-kernel - Re: [PATCH v3 11/11] mmc: sdhci-omap: Add sdhci_omap specific ops for enable_sdio

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Message-ID: <bac91c3b-9e67-0686-002f-a8547321504d@intel.com>
Date:   Thu, 15 Mar 2018 16:34:28 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Tony Lindgren <tony@...mide.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 11/11] mmc: sdhci-omap: Add sdhci_omap specific ops for
 enable_sdio_irq

On 07/03/18 15:20, Kishon Vijay Abraham I wrote:
> Add sdhci_omap_enable_sdio_irq to set CTPL and CLKEXTFREE bits in
> MMCHS_CON register required to detect asynchronous card interrupt
> on DAT[1].
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>

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

> ---
>  drivers/mmc/host/sdhci-omap.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
> index 14dd51b51b41..8ceb3956b211 100644
> --- a/drivers/mmc/host/sdhci-omap.c
> +++ b/drivers/mmc/host/sdhci-omap.c
> @@ -36,6 +36,7 @@
>  #define CON_DDR			BIT(19)
>  #define CON_CLKEXTFREE		BIT(16)
>  #define CON_PADEN		BIT(15)
> +#define CON_CTPL		BIT(11)
>  #define CON_INIT		BIT(1)
>  #define CON_OD			BIT(0)
>  
> @@ -226,6 +227,23 @@ static void sdhci_omap_conf_bus_power(struct sdhci_omap_host *omap_host,
>  	}
>  }
>  
> +static void sdhci_omap_enable_sdio_irq(struct mmc_host *mmc, int enable)
> +{
> +	struct sdhci_host *host = mmc_priv(mmc);
> +	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +	struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host);
> +	u32 reg;
> +
> +	reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON);
> +	if (enable)
> +		reg |= (CON_CTPL | CON_CLKEXTFREE);
> +	else
> +		reg &= ~(CON_CTPL | CON_CLKEXTFREE);
> +	sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg);
> +
> +	sdhci_enable_sdio_irq(mmc, enable);
> +}
> +
>  static inline void sdhci_omap_set_dll(struct sdhci_omap_host *omap_host,
>  				      int count)
>  {
> @@ -962,6 +980,7 @@ static int sdhci_omap_probe(struct platform_device *pdev)
>  	host->mmc_host_ops.set_ios = sdhci_omap_set_ios;
>  	host->mmc_host_ops.card_busy = sdhci_omap_card_busy;
>  	host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning;
> +	host->mmc_host_ops.enable_sdio_irq = sdhci_omap_enable_sdio_irq;
>  
>  	ret = sdhci_setup_host(host);
>  	if (ret)
>