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From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Hans Verkuil <hverkuil@xs4all.nl>, <linux-media@vger.kernel.org>
Cc: <dri-devel@lists.freedesktop.org>, Hans Verkuil <hans.verkuil@cisco.com>
Subject: Re: [RFC PATCH 3/3] encoder-tpd12s015: keep the ls_oe_gpio on while the phys_addr is valid
Date: Thu, 13 Apr 2017 12:26:17 +0300	[thread overview]
Message-ID: <4bd89a0a-6505-f7b7-1d86-c83a3cf37e01@ti.com> (raw)
In-Reply-To: <f139d50e-c186-5f00-2a84-a09bf32ab5f6@xs4all.nl>


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On 13/04/17 12:12, Hans Verkuil wrote:

>> Is there anything else CEC needs to access or control (besides the CEC
>> IP itself)?
> 
> The CEC framework needs to be informed about the physical address contained
> in the EDID (part of the CEA-861 block). And when the HPD goes down it needs
> to be informed as well (same call, but with CEC_PHYS_ADDR_INVALID as argument).

Ah, hmm... And currently that's (kind of) handled in
hdmi_power_off_full() by setting CEC_PHYS_ADDR_INVALID? That's not the
same thing as HPD off, though, but maybe it's enough (for now).

 Tomi


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WARNING: multiple messages have this Message-ID (diff)
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Hans Verkuil <hverkuil@xs4all.nl>, linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org, Hans Verkuil <hans.verkuil@cisco.com>
Subject: Re: [RFC PATCH 3/3] encoder-tpd12s015: keep the ls_oe_gpio on while the phys_addr is valid
Date: Thu, 13 Apr 2017 12:26:17 +0300	[thread overview]
Message-ID: <4bd89a0a-6505-f7b7-1d86-c83a3cf37e01@ti.com> (raw)
In-Reply-To: <f139d50e-c186-5f00-2a84-a09bf32ab5f6@xs4all.nl>


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On 13/04/17 12:12, Hans Verkuil wrote:

>> Is there anything else CEC needs to access or control (besides the CEC
>> IP itself)?
> 
> The CEC framework needs to be informed about the physical address contained
> in the EDID (part of the CEA-861 block). And when the HPD goes down it needs
> to be informed as well (same call, but with CEC_PHYS_ADDR_INVALID as argument).

Ah, hmm... And currently that's (kind of) handled in
hdmi_power_off_full() by setting CEC_PHYS_ADDR_INVALID? That's not the
same thing as HPD off, though, but maybe it's enough (for now).

 Tomi


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  reply	other threads:[~2017-04-13  9:26 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-29  9:39 [RFC PATCH 0/3] OMAP4 HDMI CEC support Hans Verkuil
2016-04-29  9:39 ` Hans Verkuil
2016-04-29  9:39 ` [RFC PATCH 1/3] drm/omap: fix OMAP4 hdmi_core_powerdown_disable() Hans Verkuil
2016-04-29  9:39   ` Hans Verkuil
2016-04-29  9:39 ` [RFC PATCH 2/3] omap4: add CEC support Hans Verkuil
2016-04-29  9:39   ` Hans Verkuil
2016-05-10 12:01   ` Tomi Valkeinen
2016-05-10 12:01     ` Tomi Valkeinen
2016-05-10 12:26     ` Hans Verkuil
2016-05-10 12:41       ` Tomi Valkeinen
2016-05-10 12:41         ` Tomi Valkeinen
2016-04-29  9:39 ` [RFC PATCH 3/3] encoder-tpd12s015: keep the ls_oe_gpio on while the phys_addr is valid Hans Verkuil
2016-04-29  9:39   ` Hans Verkuil
2016-05-10 11:36   ` Tomi Valkeinen
2016-05-10 11:36     ` Tomi Valkeinen
2017-04-08 10:11     ` Hans Verkuil
2017-04-08 10:57       ` Hans Verkuil
2017-04-08 10:57         ` Hans Verkuil
2017-04-10 11:59       ` Tomi Valkeinen
2017-04-10 11:59         ` Tomi Valkeinen
2017-04-12 13:03         ` Hans Verkuil
2017-04-12 13:10           ` Hans Verkuil
2017-04-12 13:21           ` Tomi Valkeinen
2017-04-12 13:21             ` Tomi Valkeinen
2017-04-12 14:04             ` Hans Verkuil
2017-04-13  8:43               ` Tomi Valkeinen
2017-04-13  8:43                 ` Tomi Valkeinen
2017-04-13  9:12                 ` Hans Verkuil
2017-04-13  9:12                   ` Hans Verkuil
2017-04-13  9:26                   ` Tomi Valkeinen [this message]
2017-04-13  9:26                     ` Tomi Valkeinen

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