Re: [PATCH 2/3] spi: s3c64xx: extend driver to make full use of runtime PM autosuspend

[Krzysztof Kozlowski <k.kozlowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>]

On 20.08.2015 04:54, Heiner Kallweit wrote:
> Extend the driver to make full use of runtime PM autosuspend.
> Before only the SPI core was instructed to use autosuspend
> by setting master->auto_runtime_pm. Nevertheless due to the missing
> pm_runtime_use_autosuspend call autosuspend wasn't active.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  drivers/spi/spi-s3c64xx.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)


I am a little bit confused... it's the same patch? It's not marked as
resend, not marked as v2 and there is no changelog...

Best regards,
Krzysztof

> 
> diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
> index 8a6ab88..8365c88 100644
> --- a/drivers/spi/spi-s3c64xx.c
> +++ b/drivers/spi/spi-s3c64xx.c
> @@ -32,6 +32,7 @@
>  #define MAX_SPI_PORTS		6
>  #define S3C64XX_SPI_QUIRK_POLL		(1 << 0)
>  #define S3C64XX_SPI_QUIRK_CS_AUTO	(1 << 1)
> +#define AUTOSUSPEND_TIMEOUT	2000
>  
>  /* Registers and bit-fields */
>  
> @@ -859,13 +860,15 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
>  		}
>  	}
>  
> -	pm_runtime_put(&sdd->pdev->dev);
> +	pm_runtime_mark_last_busy(&sdd->pdev->dev);
> +	pm_runtime_put_autosuspend(&sdd->pdev->dev);
>  	if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO))
>  		writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
>  	return 0;
>  
>  setup_exit:
> -	pm_runtime_put(&sdd->pdev->dev);
> +	pm_runtime_mark_last_busy(&sdd->pdev->dev);
> +	pm_runtime_put_autosuspend(&sdd->pdev->dev);
>  	/* setup() returns with device de-selected */
>  	if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO))
>  		writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
> @@ -1180,6 +1183,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
>  	       S3C64XX_SPI_INT_TX_OVERRUN_EN | S3C64XX_SPI_INT_TX_UNDERRUN_EN,
>  	       sdd->regs + S3C64XX_SPI_INT_EN);
>  
> +	pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_TIMEOUT);
> +	pm_runtime_use_autosuspend(&pdev->dev);
>  	pm_runtime_set_active(&pdev->dev);
>  	pm_runtime_enable(&pdev->dev);
>  
> @@ -1195,6 +1200,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
>  					mem_res, (FIFO_LVL_MASK(sdd) >> 1) + 1,
>  					sdd->rx_dma.dmach, sdd->tx_dma.dmach);
>  
> +	pm_runtime_mark_last_busy(&pdev->dev);
> +	pm_runtime_autosuspend(&pdev->dev);
> +
>  	return 0;
>  
>  err4:
> 

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