From: Neil Armstrong <narmstrong@baylibre.com>
To: a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com,
jonas@kwiboo.se, jernej.skrabec@siol.net,
boris.brezillon@collabora.com
Cc: linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org,
Neil Armstrong <narmstrong@baylibre.com>
Subject: [PATCH v3 01/10] drm/bridge: dw-hdmi: set mtmdsclock for deep color
Date: Wed, 18 Dec 2019 16:46:28 +0100 [thread overview]
Message-ID: <20191218154637.17509-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20191218154637.17509-1-narmstrong@baylibre.com>
From: Jonas Karlman <jonas@kwiboo.se>
Configure the correct mtmdsclock for deep colors to prepare support
for 10, 12 & 16bit output.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index dbe38a54870b..6a0b4b3a6739 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1792,9 +1792,26 @@ static void hdmi_av_composer(struct dw_hdmi *hdmi,
dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock);
+ if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {
+ switch (hdmi_bus_fmt_color_depth(
+ hdmi->hdmi_data.enc_out_bus_format)) {
+ case 16:
+ vmode->mtmdsclock = (u64)vmode->mpixelclock * 2;
+ break;
+ case 12:
+ vmode->mtmdsclock = (u64)vmode->mpixelclock * 3 / 2;
+ break;
+ case 10:
+ vmode->mtmdsclock = (u64)vmode->mpixelclock * 5 / 4;
+ break;
+ }
+ }
+
if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))
vmode->mtmdsclock /= 2;
+ dev_dbg(hdmi->dev, "final tmdsclk = %d\n", vmode->mtmdsclock);
+
/* Set up HDMI_FC_INVIDCONF */
inv_val = (hdmi->hdmi_data.hdcp_enable ||
(dw_hdmi_support_scdc(hdmi) &&
--
2.22.0
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next prev parent reply other threads:[~2019-12-18 15:46 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-18 15:46 [PATCH v3 00/10] drm/bridge: dw-hdmi: implement bus-format negotiation and YUV420 support Neil Armstrong
2019-12-18 15:46 ` Neil Armstrong [this message]
2019-12-18 15:46 ` [PATCH v3 02/10] drm/bridge: dw-hdmi: add max bpc connector property Neil Armstrong
2019-12-18 15:49 ` Laurent Pinchart
2019-12-19 8:52 ` Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 03/10] drm/bridge: synopsys: dw-hdmi: add bus format negociation Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 04/10] drm/bridge: synopsys: dw-hdmi: allow ycbcr420 modes for >= 0x200a Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 05/10] drm/meson: venc: make drm_display_mode const Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 06/10] drm/meson: meson_dw_hdmi: add bridge and switch to drm_bridge_funcs Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 07/10] drm/meson: dw-hdmi: stop enforcing input_bus_format Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 08/10] drm/meson: venc: add support for YUV420 setup Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 09/10] drm/meson: vclk: " Neil Armstrong
2019-12-18 15:46 ` [PATCH v3 10/10] drm/meson: Add YUV420 output support Neil Armstrong
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