drm/sun4i: tcon: Copy ID from associated backend

The tcons and backends have a one-to-one relationship. Their IDs,
or indexes in the documentation, are also the same.

Copy the ID from the associated backend and save it in the tcon
structure. This will later be used when we add support for the
output data path muxes.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index b13a7c2..5d7866f 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -471,6 +471,7 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master,
        dev_set_drvdata(dev, tcon);
        tcon->drm = drm;
        tcon->dev = dev;
+       tcon->id = backend->id;
        tcon->quirks = of_device_get_match_data(dev);
 
        tcon->lcd_rst = devm_reset_control_get(dev, "lcd");

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
index 1bda4d1..d37e1e2 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -174,6 +174,8 @@ struct sun4i_tcon {
        /* Associated crtc */
        struct sun4i_crtc               *crtc;
 
+       int                             id;
+
        /* TCON list management */
        struct list_head                list;
 };