linux-kernel - Re: [PATCH] iio: adc: ti-tlc4541: Use new structure for SPI transfer delays

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Date:   Sun, 1 Mar 2020 15:51:43 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Sergiu Cuciurean <sergiu.cuciurean@...log.com>
Cc:     <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <kstewart@...uxfoundation.org>, <gregkh@...uxfoundation.org>,
        <knaack.h@....de>, <lars@...afoo.de>, <pmeerw@...erw.net>,
        <info@...ux.net>, <allison@...utok.net>, <tglx@...utronix.de>
Subject: Re: [PATCH] iio: adc: ti-tlc4541: Use new structure for SPI
 transfer delays

On Thu, 27 Feb 2020 14:34:27 +0200
Sergiu Cuciurean <sergiu.cuciurean@...log.com> wrote:

> In a recent change to the SPI subsystem [1], a new `delay` struct was added
> to replace the `delay_usecs`. This change replaces the current
> `delay_usecs` with `delay` for this driver.
> 
> The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
> that both `delay_usecs` & `delay` are used (in this order to preserve
> backwards compatibility).
> 
> [1] commit bebcfd272df6 ("spi: introduce `delay` field for
> `spi_transfer` + spi_transfer_delay_exec()")
> 
> Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@...log.com>
applied.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/ti-tlc4541.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/ti-tlc4541.c b/drivers/iio/adc/ti-tlc4541.c
> index 4965246808bd..77620359b54c 100644
> --- a/drivers/iio/adc/ti-tlc4541.c
> +++ b/drivers/iio/adc/ti-tlc4541.c
> @@ -189,7 +189,8 @@ static int tlc4541_probe(struct spi_device *spi)
>  	/* Setup default message */
>  	st->scan_single_xfer[0].rx_buf = &st->rx_buf[0];
>  	st->scan_single_xfer[0].len = 3;
> -	st->scan_single_xfer[1].delay_usecs = 3;
> +	st->scan_single_xfer[1].delay.value = 3;
> +	st->scan_single_xfer[1].delay.unit = SPI_DELAY_UNIT_NSECS;
>  	st->scan_single_xfer[2].rx_buf = &st->rx_buf[0];
>  	st->scan_single_xfer[2].len = 2;
>