linux-kernel - [PATCH 19/27] drm/sun4i: Add support for H6 DW HDMI controller

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Message-Id: <20180902072643.4917-20-jernej.skrabec@siol.net>
Date:   Sun,  2 Sep 2018 09:26:35 +0200
From:   Jernej Skrabec <jernej.skrabec@...l.net>
To:     robh+dt@...nel.org, maxime.ripard@...tlin.com, wens@...e.org
Cc:     mark.rutland@....com, mturquette@...libre.com, sboyd@...nel.org,
        airlied@...ux.ie, architt@...eaurora.org, a.hajda@...sung.com,
        jernej.skrabec@...l.net, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-sunxi@...glegroups.com
Subject: [PATCH 19/27] drm/sun4i: Add support for H6 DW HDMI controller

H6 has DW HDMI 2.0 controller v2.12a.

It supports 4K at 60 Hz and HDCP 2.2.

Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
---
 drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
index 16a0c7a88ea8..44143c9f20d0 100644
--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
@@ -43,6 +43,16 @@ sun8i_dw_hdmi_mode_valid_a83t(struct drm_connector *connector,
 	return MODE_OK;
 }
 
+static enum drm_mode_status
+sun8i_dw_hdmi_mode_valid_h6(struct drm_connector *connector,
+			    const struct drm_display_mode *mode)
+{
+	if (mode->clock > 600000)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
 static bool sun8i_dw_hdmi_node_is_tcon_top(struct device_node *node)
 {
 	return IS_ENABLED(CONFIG_DRM_SUN8I_TCON_TOP) &&
@@ -220,12 +230,20 @@ static int sun8i_dw_hdmi_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct sun8i_dw_hdmi_quirks sun50i_h6_quirks = {
+	.mode_valid = sun8i_dw_hdmi_mode_valid_h6,
+};
+
 static const struct sun8i_dw_hdmi_quirks sun8i_a83t_quirks = {
 	.mode_valid = sun8i_dw_hdmi_mode_valid_a83t,
 	.set_rate = true,
 };
 
 static const struct of_device_id sun8i_dw_hdmi_dt_ids[] = {
+	{
+		.compatible = "allwinner,sun50i-h6-dw-hdmi",
+		.data = &sun50i_h6_quirks,
+	},
 	{
 		.compatible = "allwinner,sun8i-a83t-dw-hdmi",
 		.data = &sun8i_a83t_quirks,
-- 
2.18.0