drm/sun4i: Add support for D1 TCONs

D1 has a TCON TOP, so its quirks are similar to those for the R40 TCONs.
While there are some register changes, the part of the TCON TV supported
by the driver matches the R40 quirks, so that quirks structure can be
reused. D1 has the first supported TCON LCD with a TCON TOP, so the TCON
LCD needs a new quirks structure.

D1's TCON LCD hardware supports LVDS; in fact it provides dual-link LVDS
from a single TCON. However, it comes with a brand new LVDS PHY. Since
this PHY has not been tested, leave out LVDS driver support for now.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220424162633.12369-14-samuel@sholland.org

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 88db2d2..2ee158a 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -1542,6 +1542,12 @@ static const struct sun4i_tcon_quirks sun9i_a80_tcon_tv_quirks = {
        .needs_edp_reset = true,
 };
 
+static const struct sun4i_tcon_quirks sun20i_d1_lcd_quirks = {
+       .has_channel_0          = true,
+       .dclk_min_div           = 1,
+       .set_mux                = sun8i_r40_tcon_tv_set_mux,
+};
+
 /* sun4i_drv uses this list to check if a device node is a TCON */
 const struct of_device_id sun4i_tcon_of_table[] = {
        { .compatible = "allwinner,sun4i-a10-tcon", .data = &sun4i_a10_quirks },
@@ -1559,6 +1565,8 @@ const struct of_device_id sun4i_tcon_of_table[] = {
        { .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks },
        { .compatible = "allwinner,sun9i-a80-tcon-lcd", .data = &sun9i_a80_tcon_lcd_quirks },
        { .compatible = "allwinner,sun9i-a80-tcon-tv", .data = &sun9i_a80_tcon_tv_quirks },
+       { .compatible = "allwinner,sun20i-d1-tcon-lcd", .data = &sun20i_d1_lcd_quirks },
+       { .compatible = "allwinner,sun20i-d1-tcon-tv", .data = &sun8i_r40_tv_quirks },
        { }
 };
 MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);