linux-kernel - Re: [PATCH v2 20/27] drm/rockchip: inno_hdmi: Correctly setup HDMI quantization range

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Message-ID: <c58b97ca-3faa-4bf2-8d7c-7ff34e0428ca@gmail.com>
Date: Mon, 18 Dec 2023 13:37:47 +0100
From: Alex Bee <knaerzche@...il.com>
To: Maxime Ripard <mripard@...nel.org>
Cc: Sandy Huang <hjc@...k-chips.com>, Heiko Stübner
 <heiko@...ech.de>, Andy Yan <andyshrk@....com>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Daniel Vetter <daniel@...ll.ch>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 20/27] drm/rockchip: inno_hdmi: Correctly setup HDMI
 quantization range


Am 18.12.23 um 10:05 schrieb Maxime Ripard:
> On Sat, Dec 16, 2023 at 05:26:31PM +0100, Alex Bee wrote:
>> @@ -431,6 +452,9 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
>>   	else
>>   		inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
>>   
>> +	inno_conn_state->rgb_limited_range =
>> +		drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED;
>> +
>>   	/* Mute video and audio output */
>>   	hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
>>   		  v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1));
> This needs to be done at atomic_check time: the expectation is that by
> the time you commit the state, everything is prepared for it.
OK. I guess that also applies to the other members of
inno_hdmi_connector_state (former hdmi_data) and was wrong all the time.

Alex
> Maxime