[alsa-devel] [PATCHv4 7/7] ASoC: TWL6030: Detect power-up sequence completion

[Mark Brown]

On Tue, Feb 23, 2010 at 06:10:54PM -0600, Olaya, Margarita wrote:

> +	if (naudint) {
> +		/* wait for ready interrupt with 48 ms timeout */
> +		time_left = wait_for_completion_timeout(&priv->ready,
> +					msecs_to_jiffies(48));
> +	} else {
> +		/* retry 3 times only */
> +		for (time_left = 3; time_left > 0; time_left--) {
> +			mdelay(16);
> +			twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid,
> +					TWL6030_REG_INTID);
> +			if (intid & TWL6030_READYINT)
> +				break;
> +		}
> +	}

It strikes me that you could combine these two cases - the
wait_for_completion_timeout() will function just as well as a delay.
I'd also expect to see an error reported if the device doesn't report as
ready one way or another.