lkml.org 
[lkml]   [2020]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] input: keyboard: applespi: Use new structure for SPI transfer delays

On Thu, Feb 27, 2020 at 02:45:34PM +0200, Sergiu Cuciurean 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@analog.com>
> ---
> drivers/input/keyboard/applespi.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/input/keyboard/applespi.c b/drivers/input/keyboard/applespi.c
> index d38398526965..d6a847e5f7e4 100644
> --- a/drivers/input/keyboard/applespi.c
> +++ b/drivers/input/keyboard/applespi.c
> @@ -545,7 +545,8 @@ static void applespi_setup_read_txfrs(struct applespi_data *applespi)
> memset(dl_t, 0, sizeof(*dl_t));
> memset(rd_t, 0, sizeof(*rd_t));
>
> - dl_t->delay_usecs = applespi->spi_settings.spi_cs_delay;
> + dl_t->delay.value = applespi->spi_settings.spi_cs_delay;
> + dl_t->delay.unit = SPI_DELAY_UNIT_USECS;
>
> rd_t->rx_buf = applespi->rx_buffer;
> rd_t->len = APPLESPI_PACKET_SIZE;
> @@ -574,14 +575,17 @@ static void applespi_setup_write_txfrs(struct applespi_data *applespi)
> * end up with an extra unnecessary (but harmless) cs assertion and
> * deassertion.
> */
> - wt_t->delay_usecs = SPI_RW_CHG_DELAY_US;
> + wt_t->delay.value = SPI_RW_CHG_DELAY_US;
> + wt_t->delay.unit = SPI_DELAY_UNIT_USECS;
> wt_t->cs_change = 1;
>
> - dl_t->delay_usecs = applespi->spi_settings.spi_cs_delay;
> + dl_t->delay.value = applespi->spi_settings.spi_cs_delay;
> + dl_t->delay.unit = SPI_DELAY_UNIT_USECS;
>
> wr_t->tx_buf = applespi->tx_buffer;
> wr_t->len = APPLESPI_PACKET_SIZE;
> - wr_t->delay_usecs = SPI_RW_CHG_DELAY_US;
> + wr_t->delay.value = SPI_RW_CHG_DELAY_US;
> + wr_t->delay.unit = SPI_DELAY_UNIT_USECS;
>
> st_t->rx_buf = applespi->tx_status;
> st_t->len = APPLESPI_STATUS_SIZE;
> --
> 2.17.1

Looks good to me and tested to confirm things still work.


Cheers,

Ronald

\
 
 \ /
  Last update: 2020-02-29 04:26    [W:0.079 / U:0.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site