From: Zongdong Jiao <zongdong.jiao@amlogic.com>
Date: Thu, 1 Aug 2019 06:43:18 +0000 (+0800)
Subject: eARCrx: add hdmitx hpd notify [1/1]
X-Git-Tag: hardkernel-4.9.236-104~857
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4ec6e65c7060ef1c76889fc75599a62b48e25fa5;p=platform%2Fkernel%2Flinux-amlogic.git

eARCrx: add hdmitx hpd notify [1/1]

PD#SWPL-6861

Problem:
Wrong val for init bandgap

Solution:
If PHY_CNTL0 is 0, then enable it, otherwise no need.

Verify:
SM1/AC200

Change-Id: I9e4a7bbe5d4b02cd8e9b2d5da87b4e572bdeb67e
Signed-off-by: Zongdong Jiao <zongdong.jiao@amlogic.com>
---

diff --git a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
index b6ffa51..2185452 100644
--- a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
+++ b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
@@ -644,12 +644,17 @@ void HDMITX_Meson_Init(struct hdmitx_dev *hdev)
 
 static void hdmitx_phy_bandgap_en(struct hdmitx_dev *hdev)
 {
+	unsigned int val = 0;
 	switch (hdev->chip_type) {
 	case MESON_CPU_ID_TM2:
-		hd_write_reg(P_TM2_HHI_HDMI_PHY_CNTL0, 0x0b4242);
+		val = hd_read_reg(P_TM2_HHI_HDMI_PHY_CNTL0);
+		if (val == 0)
+			hd_write_reg(P_TM2_HHI_HDMI_PHY_CNTL0, 0x0b4242);
 		break;
 	case MESON_CPU_ID_SM1:
-		hd_write_reg(P_HHI_HDMI_PHY_CNTL0, 0x0b4242);
+		val = hd_read_reg(P_HHI_HDMI_PHY_CNTL0);
+		if (val == 0)
+			hd_write_reg(P_HHI_HDMI_PHY_CNTL0, 0x0b4242);
 		break;
 	default:
 		break;