linux-kernel - Re: [PATCH v2 25/32] ata/drivers/ahci

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Message-ID: <8e506701-e934-e9de-1a2f-ee252e514741@opensource.wdc.com>
Date:   Tue, 26 Jul 2022 12:43:03 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Daniel Lezcano <daniel.lezcano@...exp.org>,
        daniel.lezcano@...aro.org, rafael@...nel.org
Cc:     rui.zhang@...el.com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, khilman@...libre.com,
        abailon@...libre.com, lukasz.luba@....com, broonie@...nel.org,
        heiko@...ech.de, hayashi.kunihiko@...ionext.com,
        mhiramat@...nel.org, talel@...zon.com, thierry.reding@...il.com,
        digetx@...il.com, jonathanh@...dia.com, anarsoul@...il.com,
        tiny.windzz@...il.com, baolin.wang7@...il.com,
        f.fainelli@...il.com, bjorn.andersson@...aro.org,
        mcoquelin.stm32@...il.com, glaroque@...libre.com,
        miquel.raynal@...tlin.com, shawnguo@...nel.org,
        niklas.soderlund@...natech.se, matthias.bgg@...il.com,
        j-keerthy@...com, Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" 
        <linux-ide@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 25/32] ata/drivers/ahci_imx: Switch to new of thermal
 API

On 7/26/22 06:26, Daniel Lezcano wrote:
> The thermal OF code has a new API allowing to migrate the OF
> initialization to a simpler approach. The ops are no longer device
> tree specific and are the generic ones provided by the core code.
> 
> Convert the ops to the thermal_zone_device_ops format and use the new
> API to register the thermal zone with these generic ops.
> 
> sata_ahci_read_temperature() is used by sata_ahci_show_temp() also.
> 
> So in order to change the function prototype for the get_temp ops which
> does not take a void* but a thermal_zone_device* structure, this
> function wraps the call.
> 
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...exp.org>

Acked-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>

> ---
>  drivers/ata/ahci_imx.c | 15 ++++++++++-----
>  1 file changed, 10 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c
> index 79aa9f285312..b734e069034d 100644
> --- a/drivers/ata/ahci_imx.c
> +++ b/drivers/ata/ahci_imx.c
> @@ -327,7 +327,7 @@ static int read_adc_sum(void *dev, u16 rtune_ctl_reg, void __iomem * mmio)
>  }
>  
>  /* SATA AHCI temperature monitor */
> -static int sata_ahci_read_temperature(void *dev, int *temp)
> +static int __sata_ahci_read_temperature(void *dev, int *temp)
>  {
>  	u16 mpll_test_reg, rtune_ctl_reg, dac_ctl_reg, read_sum;
>  	u32 str1, str2, str3, str4;
> @@ -416,6 +416,11 @@ static int sata_ahci_read_temperature(void *dev, int *temp)
>  	return 0;
>  }
>  
> +static int sata_ahci_read_temperature(struct thermal_zone_device *tz, int *temp)
> +{
> +	return __sata_ahci_read_temperature(tz->devdata, temp);
> +}
> +
>  static ssize_t sata_ahci_show_temp(struct device *dev,
>  				   struct device_attribute *da,
>  				   char *buf)
> @@ -423,14 +428,14 @@ static ssize_t sata_ahci_show_temp(struct device *dev,
>  	unsigned int temp = 0;
>  	int err;
>  
> -	err = sata_ahci_read_temperature(dev, &temp);
> +	err = __sata_ahci_read_temperature(dev, &temp);
>  	if (err < 0)
>  		return err;
>  
>  	return sprintf(buf, "%u\n", temp);
>  }
>  
> -static const struct thermal_zone_of_device_ops fsl_sata_ahci_of_thermal_ops = {
> +static const struct thermal_zone_device_ops fsl_sata_ahci_of_thermal_ops = {
>  	.get_temp = sata_ahci_read_temperature,
>  };
>  
> @@ -1131,8 +1136,8 @@ static int imx_ahci_probe(struct platform_device *pdev)
>  			ret = PTR_ERR(hwmon_dev);
>  			goto disable_clk;
>  		}
> -		devm_thermal_zone_of_sensor_register(hwmon_dev, 0, hwmon_dev,
> -					     &fsl_sata_ahci_of_thermal_ops);
> +		devm_thermal_of_zone_register(hwmon_dev, 0, hwmon_dev,
> +					      &fsl_sata_ahci_of_thermal_ops);
>  		dev_info(dev, "%s: sensor 'sata_ahci'\n", dev_name(hwmon_dev));
>  	}
>  


-- 
Damien Le Moal
Western Digital Research