linux-kernel - Re: [PATCH v2 05/11] mmc: sdhci: pxav3: Use sdhci_set_power_and

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Message-ID: <92473c9e-693a-fa98-2a96-a200a86dc2fc@intel.com>
Date:   Mon, 9 Mar 2020 09:20:14 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        linux-kernel@...r.kernel.org
Cc:     phil@...pberrypi.com, linux-mmc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, f.fainelli@...il.com,
        stefan.wahren@...e.com, bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: [PATCH v2 05/11] mmc: sdhci: pxav3: Use
 sdhci_set_power_and_voltage()

On 6/03/20 7:44 pm, Nicolas Saenz Julienne wrote:
> The sdhci core provides a helper function with the same functionality as
> this controller's set_power() callback. Use it instead.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---
>  drivers/mmc/host/sdhci-pxav3.c | 20 +-------------------
>  1 file changed, 1 insertion(+), 19 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
> index e55037ceda73..75fe90b88f9b 100644
> --- a/drivers/mmc/host/sdhci-pxav3.c
> +++ b/drivers/mmc/host/sdhci-pxav3.c
> @@ -297,27 +297,9 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
>  		__func__, uhs, ctrl_2);
>  }
>  
> -static void pxav3_set_power(struct sdhci_host *host, unsigned char mode,
> -			    unsigned short vdd)
> -{
> -	struct mmc_host *mmc = host->mmc;
> -	u8 pwr = host->pwr;
> -
> -	sdhci_set_power_noreg(host, mode, vdd);
> -
> -	if (host->pwr == pwr)
> -		return;
> -
> -	if (host->pwr == 0)
> -		vdd = 0;
> -
> -	if (!IS_ERR(mmc->supply.vmmc))
> -		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
> -}

This code is different.  The commit message should explain why it is
equivalent.  Has it been tested?

> -
>  static const struct sdhci_ops pxav3_sdhci_ops = {
>  	.set_clock = sdhci_set_clock,
> -	.set_power = pxav3_set_power,
> +	.set_power = sdhci_set_power_and_bus_voltage,
>  	.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
>  	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
>  	.set_bus_width = sdhci_set_bus_width,
>