Re: [PATCH v4 0/6] drm/dsi: DSI for devices with different control bus

From: Archit Taneja <architt@codeaurora.org>
To: dri-devel@lists.freedesktop.org, a.hajda@samsung.com,
	jani.nikula@linux.intel.com, treding@nvidia.com
Cc: linux-kernel@vger.kernel.org, airlied@linux.ie, daniel@ffwll.ch,
	l.stach@pengutronix.de, robh@kernel.org,
	linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v4 0/6] drm/dsi: DSI for devices with different control bus
Date: Tue, 5 Jan 2016 10:59:31 +0530	[thread overview]
Message-ID: <568B54BB.9090209@codeaurora.org> (raw)
In-Reply-To: <1449751300-2841-1-git-send-email-architt@codeaurora.org>

Hi Thierry,

Can you pick up these DSI patches, or would it make more sense for
these to go via someone else?

Thanks,
Archit

On 12/10/2015 06:11 PM, Archit Taneja wrote:
> We are currently restricted when it comes to supporting DSI on devices
> that have a non-DSI control bus. For example, DSI encoder chips are
> available in the market that are configured via i2c. Configuring their
> registers via DSI bus is either optional or not available at all.
>
> These devices still need to pass DSI parameters (data lanes, mode flags
> etc) to the DSI host they are connected to. We don't have a way to do
> that at the moment.
>
> After some discussions on the previous RFC[1], we decided to support this
> by providing additional API in drm_mipi_dsi which lets us create new DSI
> devices without the need of them to have a DT node.
>
> [1]: https://lkml.org/lkml/2015/6/30/42
>
> Changes in v4:
> - Added a new patch that fixes build issues when CONFIG_OF is not set.
>
> Changes in v3:
>
> - Incorporated misc comments by Andrzej. Changed from RFC to a PATCH set.
> - Fixed htmldocs warnings.
>
> Archit Taneja (6):
>    drm/dsi: check for CONFIG_OF when defining of_mipi_dsi_device_add
>    drm/dsi: Refactor device creation
>    drm/dsi: Try to match non-DT dsi devices
>    drm/dsi: Check for used channels
>    drm/dsi: Add routine to unregister dsi device
>    drm/dsi: Get DSI host by DT device node
>
>   drivers/gpu/drm/drm_mipi_dsi.c | 144 ++++++++++++++++++++++++++++++++---------
>   include/drm/drm_mipi_dsi.h     |  29 +++++++++
>   2 files changed, 141 insertions(+), 32 deletions(-)
>

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