[U-Boot] [PATCH 06/24] mxc_i2c.c: code i2c_probe as a 0 length i2c_write

[Stefano Babic]

On 22/06/2012 06:12, Troy Kisky wrote:
> Signed-off-by: Troy Kisky <troy.kisky at boundarydevices.com>
> ---
>  drivers/i2c/mxc_i2c.c |   29 ++++++++---------------------
>  1 file changed, 8 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
> index 626960d..4f12b9e 100644
> --- a/drivers/i2c/mxc_i2c.c
> +++ b/drivers/i2c/mxc_i2c.c
> @@ -302,27 +302,6 @@ exit:
>  }
>  
>  /*
> - * Try if a chip add given address responds (probe the chip)
> - */
> -int i2c_probe(uchar chip)
> -{
> -	struct mxc_i2c_regs *i2c_regs = (struct mxc_i2c_regs *)I2C_BASE;
> -	int ret;
> -
> -	ret = i2c_imx_start();
> -	if (ret)
> -		return ret;
> -
> -	ret = tx_byte(i2c_regs, chip << 1);
> -	if (ret)
> -		return ret;
> -
> -	i2c_imx_stop();
> -
> -	return ret;
> -}
> -
> -/*
>   * Read data from I2C device
>   */
>  int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
> @@ -404,3 +383,11 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
>  
>  	return ret;
>  }
> +
> +/*
> + * Try if a chip add given address responds (probe the chip)
> + */
> +int i2c_probe(uchar chip)
> +{
> +	return i2c_write(chip, 0, 0, NULL, 0);
> +}
> 

Acked-by: Stefano Babic <sbabic at denx.de>

Best regards,
Stefano Babic



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