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eARCrx: add hdmitx hpd notify [1/1]

Browse Source 
PD#SWPL-6861

Problem:
Lack hdmitx hpd event notify to eARC

Solution:
Add hdmitx hpd event notify to eARC in HPD interrupt handler
w/o any delay.

Verify:
TBD

Change-Id: Ic7f35365a2af634dee604f7121d62738b4b17a8d
Signed-off-by: Zongdong Jiao <zongdong.jiao@amlogic.com>
This commit is contained in:
Zongdong Jiao
2019-07-31 15:30:56 +08:00
parent 04dfff2d98
commit 1b1219047e
3 changed files with 45 additions and 1 deletions
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2
MAINTAINERS
View File

@@ -15085,4 +15085,4 @@ F: drivers/amlogic/drm/meson_vpu.c
AMLOGIC ADD DTS FOR T312 PLATFORM
M: hualing chen <hualing.chen@amlogic.com>
F: arch/arm64/boot/dts/amlogic/mesontm2_t962x3_t312-panel.dtsi
F: arch/arm/boot/dts/amlogic/mesontm2_t962x3_t312-panel.dtsi
F: arch/arm/boot/dts/amlogic/mesontm2_t962x3_t312-panel.dtsi

18
drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
View File

@@ -47,6 +47,7 @@
#include "hw_clk.h"
#include <linux/arm-smccc.h>
#include "checksha.h"
#include <linux/amlogic/media/sound/hdmi_earc.h>
static void mode420_half_horizontal_para(void);
static void hdmi_phy_suspend(void);
@@ -641,6 +642,20 @@ void HDMITX_Meson_Init(struct hdmitx_dev *hdev)
hdev->HWOp.CntlMisc(hdev, MISC_AVMUTE_OP, CLR_AVMUTE);
}
static void hdmitx_phy_bandgap_en(struct hdmitx_dev *hdev)
{
switch (hdev->chip_type) {
case MESON_CPU_ID_TM2:
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);
break;
default:
break;
}
}
static irqreturn_t intr_handler(int irq, void *dev)
{
/* get interrupt status */
@@ -670,6 +685,8 @@ static irqreturn_t intr_handler(int irq, void *dev)
hdev->hdmitx_event |= HDMI_TX_HPD_PLUGIN;
hdev->hdmitx_event &= ~HDMI_TX_HPD_PLUGOUT;
hdev->rhpd_state = 1;
hdmitx_phy_bandgap_en(hdev);
earc_hdmitx_hpdst(1);
queue_delayed_work(hdev->hdmi_wq,
&hdev->work_hpd_plugin, HZ / 2);
}
@@ -678,6 +695,7 @@ static irqreturn_t intr_handler(int irq, void *dev)
hdev->hdmitx_event |= HDMI_TX_HPD_PLUGOUT;
hdev->hdmitx_event &= ~HDMI_TX_HPD_PLUGIN;
hdev->rhpd_state = 0;
earc_hdmitx_hpdst(0);
queue_delayed_work(hdev->hdmi_wq,
&hdev->work_hpd_plugout, HZ / 20);
}

26
include/linux/amlogic/media/sound/hdmi_earc.h Normal file
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@@ -0,0 +1,26 @@
/*
* include/linux/amlogic/media/sound/hdmi_earc.h
*
* Copyright (C) 2017 Amlogic, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef __HDMI_EARC_H__
#define __HDMI_EARC_H__
extern void earc_hdmitx_hpdst(bool st);
void earc_hdmitx_hpdst(bool st)
{
};
#endif