linux-kernel - Re: [PATCH v3 2/9] drm/sun4i: tcon: Add TCON LCD support for R40

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Message-ID: <20200102105424.kmte7aooh2gkrcnu@gilmour.lan>
Date:   Thu, 2 Jan 2020 11:54:24 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        linux-amarula@...rulasolutions.com
Subject: Re: [PATCH v3 2/9] drm/sun4i: tcon: Add TCON LCD support for R40

On Tue, Dec 31, 2019 at 06:35:21PM +0530, Jagan Teki wrote:
> TCON LCD0, LCD1 in allwinner R40, are used for managing
> LCD interfaces like RGB, LVDS and DSI.
>
> Like TCON TV0, TV1 these LCD0, LCD1 are also managed via
> tcon top.
>
> Add support for it, in tcon driver.
>
> Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> ---
> Changes for v3:
> - none
>
>  drivers/gpu/drm/sun4i/sun4i_tcon.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> index fad72799b8df..69611d38c844 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -1470,6 +1470,13 @@ static const struct sun4i_tcon_quirks sun8i_a83t_tv_quirks = {
>  	.has_channel_1		= true,
>  };
>
> +static const struct sun4i_tcon_quirks sun8i_r40_lcd_quirks = {
> +	.supports_lvds		= true,
> +	.has_channel_0		= true,
> +	/* TODO Need to support TCON output muxing via GPIO pins */
> +	.set_mux		= sun8i_r40_tcon_tv_set_mux,

What is this muking about? And why is it a TODO?

Maxime

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