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AR-1 - Adding support category for distributions AR-4 - Remove Allwinner legacy AR-5 - Drop Udoo family and move Udoo board into newly created imx6 family AR-9 - Rename sunxi-next to sunxi-legacy AR-10 - Rename sunxi-dev to sunxi-current AR-11 - Adding Radxa Rockpi S support AR-13 - Rename rockchip64-default to rockchip64-legacy AR-14 - Add rockchip64-current as mainline source AR-15 - Drop Rockchip 4.19.y NEXT, current become 5.3.y AR-16 - Rename RK3399 default to legacy AR-17 - Rename Odroid XU4 next and default to legacy 4.14.y, add DEV 5.4.y AR-18 - Add Odroid N2 current mainline AR-19 - Move Odroid C1 to meson family AR-20 - Rename mvebu64-default to mvebu64-legacy AR-21 - Rename mvebu-default to mvebu-legacy AR-22 - Rename mvebu-next to mvebu-current AR-23 - Drop meson64 default and next, current becomes former DEV 5.3.y AR-24 - Drop cubox family and move Cubox/Hummingboard boards under imx6 AR-26 - Adjust motd AR-27 - Enabling distribution release status AR-28 - Added new GCC compilers AR-29 - Implementing Ubuntu Eoan AR-30 - Add desktop packages per board or family AR-31 - Remove (Ubuntu/Debian) distribution name from image filename AR-32 - Move arch configs from configuration.sh to separate arm64 and armhf config files AR-33 - Revision numbers for beta builds changed to day_in_the_year AR-34 - Patches support linked patches AR-35 - Break meson64 family into gxbb and gxl AR-36 - Add Nanopineo2 Black AR-38 - Upgrade option from old branches to new one via armbian-config AR-41 - Show full timezone info AR-43 - Merge Odroid N2 to meson64 AR-44 - Enable FORCE_BOOTSCRIPT_UPDATE for all builds
68 lines
2.5 KiB
Diff
68 lines
2.5 KiB
Diff
From 796acec22305cbd6c1bf6dcc4e103482ca525025 Mon Sep 17 00:00:00 2001
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From: Jernej Skrabec <jernej.skrabec@siol.net>
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Date: Thu, 8 Mar 2018 17:16:22 +0100
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Subject: [PATCH 77/82] drm/bridge/synopsys: dw_hdmi: Add a quirk to
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automatically set CTS
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On some SoCs with DW HDMI, like Allwinner H3, HDMI audio doesn't work
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well if CTS is not set automatically. Add a quirk for it.
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Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
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---
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drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 26 ++++++++++++++---------
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include/drm/bridge/dw_hdmi.h | 2 ++
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2 files changed, 18 insertions(+), 10 deletions(-)
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diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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index 5971976284bf..822d0093a990 100644
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--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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@@ -424,16 +424,22 @@ static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi)
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static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts,
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unsigned int n)
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{
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- /* Must be set/cleared first */
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- hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
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-
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- /* nshift factor = 0 */
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- hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);
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-
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- hdmi_writeb(hdmi, ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) |
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- HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
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- hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
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- hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1);
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+ if (!hdmi->plat_data->auto_cts) {
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+ /* Must be set/cleared first */
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+ hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
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+
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+ /* nshift factor = 0 */
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+ hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);
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+
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+ hdmi_writeb(hdmi,
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+ ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) |
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+ HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
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+ hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
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+ hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1);
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+ } else {
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+ /* set automatic CTS calculation */
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+ hdmi_writeb(hdmi, 0x00, HDMI_AUD_CTS3);
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+ }
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hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3);
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hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
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diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
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index ccb5aa8468e0..b6a878455364 100644
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--- a/include/drm/bridge/dw_hdmi.h
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+++ b/include/drm/bridge/dw_hdmi.h
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@@ -129,6 +129,8 @@ struct dw_hdmi_plat_data {
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unsigned long input_bus_format;
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unsigned long input_bus_encoding;
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+ bool auto_cts;
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+
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/* Vendor PHY support */
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const struct dw_hdmi_phy_ops *phy_ops;
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const char *phy_name;
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--
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2.20.1
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