From 0d5f4dee7a5e49a0bb0a2d19f66168bfa29cd130 Mon Sep 17 00:00:00 2001
From: Nickey Yang <nickey.yang@rock-chips.com>
Date: Wed, 11 Dec 2019 21:34:17 +0100
Subject: drm: rockchip: rk3066_hdmi: set edid fifo address
Git-commit: 0eee61521da76e2f827f8f3025d77641461553bd
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Fix edid reading error when edid's block > 2.
Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191211203417.19448-1-jbx6244@gmail.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/rockchip/rk3066_hdmi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
index 8673e64723e3..fe203d38664e 100644
--- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
@@ -641,6 +641,9 @@ static int rk3066_hdmi_i2c_write(struct rk3066_hdmi *hdmi, struct i2c_msg *msgs)
if (msgs->addr == DDC_ADDR)
hdmi->i2c->ddc_addr = msgs->buf[0];
+ /* Set edid fifo first address. */
+ hdmi_writeb(hdmi, HDMI_EDID_FIFO_ADDR, 0x00);
+
/* Set edid word address 0x00/0x80. */
hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr);
--
2.28.0