Hi,
On Thu, Nov 01, 2018 at 09:00:39PM +0100, Paul Kocialkowski wrote:
> Features such as dithering and pixel data edge configuration currently
> rely on the panel registered with the TCON driver. However, bridges are
> also supported in addition panels.
>
> Instead of retrieving the connector from the panel, pass the encoder
> from the calling function, as is done for other interfaces.
>
> The connector is then retrieved from the encoder with the dedicated
> helper. Even in the case of bridges, the connector is registered with
> the encoder from our driver and is accessible when iterating connectors.
>
> Signed-off-by: Paul Kocialkowski <contact@xxxxxxxx>
> ---
> drivers/gpu/drm/sun4i/sun4i_tcon.c | 22 +++++++++-------------
> 1 file changed, 9 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> index f949287d926c..262ffb6b0f82 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -478,8 +478,11 @@ static void sun4i_tcon0_mode_set_lvds(struct sun4i_tcon *tcon,
> }
>
> static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
> + const struct drm_encoder *encoder,
> const struct drm_display_mode *mode)
> {
> + struct drm_connector *connector = sun4i_tcon_get_connector(encoder);
> + struct drm_display_info display_info = connector->display_info;
> unsigned int bp, hsync, vsync;
> u8 clk_delay;
> u32 val = 0;
> @@ -491,8 +494,7 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
> sun4i_tcon0_mode_set_common(tcon, mode);
>
> /* Set dithering if needed */
> - if (tcon->panel)
> - sun4i_tcon0_mode_set_dithering(tcon, tcon->panel->connector);
> + sun4i_tcon0_mode_set_dithering(tcon, connector);
>
> /* Adjust clock delay */
> clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
> @@ -556,17 +558,11 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
> * Following code is a way to avoid quirks all around TCON
> * and DOTCLOCK drivers.
> */
> - if (tcon->panel) {
> - struct drm_panel *panel = tcon->panel;
> - struct drm_connector *connector = panel->connector;
> - struct drm_display_info display_info = connector->display_info;
> -
> - if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
> - clk_set_phase(tcon->dclk, 240);
> + if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
> + clk_set_phase(tcon->dclk, 240);
>
> - if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
> - clk_set_phase(tcon->dclk, 0);
> - }
> + if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
> + clk_set_phase(tcon->dclk, 0);
You're doing multiple things here: you're changing the function API,
and then moving the display info checks outside of the tcon->panel
condition.
You should do two separate patches for that.
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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