drm/rockchip: dw_hdmi: add rk3568 support

Add a new dw_hdmi_plat_data struct and new compatible for rk3568.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220422072841.2206452-8-s.hauer@pengutronix.de

drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c

@@ -50,6 +50,10 @@
 #define RK3399_GRF_SOC_CON20		0x6250
 #define RK3399_HDMI_LCDC_SEL		BIT(6)
 
+#define RK3568_GRF_VO_CON1		0x0364
+#define RK3568_HDMI_SDAIN_MSK		BIT(15)
+#define RK3568_HDMI_SCLIN_MSK		BIT(14)
+
 #define HIWORD_UPDATE(val, mask)	(val | (mask) << 16)
 
 /**
@@ -473,6 +477,19 @@ static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
 	.use_drm_infoframe = true,
 };
 
+static struct rockchip_hdmi_chip_data rk3568_chip_data = {
+	.lcdsel_grf_reg = -1,
+};
+
+static const struct dw_hdmi_plat_data rk3568_hdmi_drv_data = {
+	.mode_valid = dw_hdmi_rockchip_mode_valid,
+	.mpll_cfg   = rockchip_mpll_cfg,
+	.cur_ctr    = rockchip_cur_ctr,
+	.phy_config = rockchip_phy_config,
+	.phy_data = &rk3568_chip_data,
+	.use_drm_infoframe = true,
+};
+
 static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
 	{ .compatible = "rockchip,rk3228-dw-hdmi",
 	  .data = &rk3228_hdmi_drv_data
@@ -486,6 +503,9 @@ static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
 	{ .compatible = "rockchip,rk3399-dw-hdmi",
 	  .data = &rk3399_hdmi_drv_data
 	},
+	{ .compatible = "rockchip,rk3568-dw-hdmi",
+	  .data = &rk3568_hdmi_drv_data
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);
@@ -520,6 +540,9 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 	encoder = &hdmi->encoder.encoder;
 
 	encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
+	rockchip_drm_encoder_set_crtc_endpoint_id(&hdmi->encoder,
+						  dev->of_node, 0, 0);
+
 	/*
 	 * If we failed to find the CRTC(s) which this encoder is
 	 * supposed to be connected to, it's because the CRTC has
@@ -550,6 +573,14 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 		return ret;
 	}
 
+	if (hdmi->chip_data == &rk3568_chip_data) {
+		regmap_write(hdmi->regmap, RK3568_GRF_VO_CON1,
+			     HIWORD_UPDATE(RK3568_HDMI_SDAIN_MSK |
+					   RK3568_HDMI_SCLIN_MSK,
+					   RK3568_HDMI_SDAIN_MSK |
+					   RK3568_HDMI_SCLIN_MSK));
+	}
+
 	drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
 	drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);