linux-kernel - Re: [PATCH 2/2] regmap: spi: Support asynchronous I/O for SPI

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Date:	Mon, 28 Jan 2013 11:38:50 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] regmap: spi: Support asynchronous I/O for SPI

On 01/27/13 06:12, Mark Brown wrote:
> diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c
> index ffa46a9..bb19592 100644
> --- a/drivers/base/regmap/regmap-spi.c
> +++ b/drivers/base/regmap/regmap-spi.c
> @@ -15,6 +15,21 @@
>  #include <linux/init.h>
>  #include <linux/module.h>
>  
> +#include "internal.h"
> +
> +struct regmap_async_spi {
> +	struct regmap_async core;
> +	struct spi_message m;
> +	struct spi_transfer t[2];
> +};
> +
> +static void regmap_spi_complete(void *data)
> +{
> +	struct regmap_async_spi *async = data;
> +
> +	regmap_async_complete_cb(&async->core, async->m.status);
> +}
> +
>  static int regmap_spi_write(void *context, const void *data, size_t count)
>  {
>  	struct device *dev = context;
> @@ -40,6 +55,30 @@ static int regmap_spi_gather_write(void *context,
>  	return spi_sync(spi, &m);
>  }
>  
> +static int regmap_spi_async_write(void *context,
> +				  const void *reg, size_t reg_len,
> +				  const void *val, size_t val_len,
> +				  struct regmap_async *a)
> +{
> +	struct regmap_async_spi *async = (void *)a;

Can you use container_of() here?

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