[PATCH RFC 4/5] drm/bridge: add dw-hdmi cec driver using Hans Verkil's CEC code

Hans Verkuil hverkuil at xs4all.nl
Tue Aug 23 01:03:03 PDT 2016


Hi Russell,

On 08/12/16 16:15, Russell King wrote:
> +	ret = devm_request_threaded_irq(&pdev->dev, cec->irq,
> +					dw_hdmi_cec_hardirq,
> +					dw_hdmi_cec_thread, IRQF_SHARED,
> +					DEV_NAME, cec->adap);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = cec_register_adapter(cec->adap);
> +	if (ret < 0)
> +		return ret;
> +
> +	/*
> +	 * CEC documentation says we must not call cec_delete_adapter
> +	 * after a successful call to cec_register_adapter().
> +	 */
> +	devm_remove_action(&pdev->dev, dw_hdmi_cec_del, cec);
> +
> +	hdmi_register_notifier(&cec->nb);

The notifier is registered here, but who provides CEC with the initial
physical address? As I understand it, it only tells you when things change,
not what the initial state is.

Regards,

	Hans



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