Re: [RFC PATCH 4/6] spi: ti-qspi: Implement the spi_mem interface

[Vignesh R <vigneshr-l0cyMroinI0@public.gmane.org>]

On Tuesday 06 February 2018 04:51 AM, Boris Brezillon wrote:
> From: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> 
> The spi_mem interface is meant to replace the spi_flash_read() one.
> Implement the ->exec_op() method so that we can smoothly get rid of the
> old interface.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> ---
>  drivers/spi/spi-ti-qspi.c | 85 +++++++++++++++++++++++++++++++++++++++--------
>  1 file changed, 72 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
> index c24d9b45a27c..40cac3ef6cc9 100644
> --- a/drivers/spi/spi-ti-qspi.c
> +++ b/drivers/spi/spi-ti-qspi.c

[...]

> +static const struct spi_controller_mem_ops ti_qspi_mem_ops = {
> +	.exec_op = ti_qspi_exec_mem_op,

       .supports_op = ti_qspi_supports_mem_op,

Its required as per spi_controller_check_ops() in Patch 1/6

> +};
> +
>  static int ti_qspi_start_transfer_one(struct spi_master *master,
>  		struct spi_message *m)
>  {
> @@ -673,6 +730,7 @@ static int ti_qspi_probe(struct platform_device *pdev)
>  	master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) |
>  				     SPI_BPW_MASK(8);
>  	master->spi_flash_read = ti_qspi_spi_flash_read;
> +	master->mem_ops = &ti_qspi_mem_ops;
>  
>  	if (!of_property_read_u32(np, "num-cs", &num_cs))
>  		master->num_chipselect = num_cs;
> @@ -785,6 +843,7 @@ static int ti_qspi_probe(struct platform_device *pdev)
>  				 PTR_ERR(qspi->mmap_base));
>  			qspi->mmap_base = NULL;
>  			master->spi_flash_read = NULL;
> +			master->mem_ops = NULL;
>  		}
>  	}
>  	qspi->mmap_enabled = false;
> 

-- 
Regards
Vignesh
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