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misc: tegra_cec: turn on TV ASAP

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Turn on the TV as soon as possible for better user experience
by sending <Text View On> and <ACTIVE SOURCE> CEC commands if
the previous reboot is not recovery. If the previous reboot
reason is recovery, don't send <Text View On> to avoid turning
on TV when there is an auto OTA on-going.

CEC driver uses RESERVED2 logical address as the source address.
Later, the upper layer will send OneTouchPlay command by using
its valid logical address.

Bug 200253563

Change-Id: Iecd759bb50c1f21549f55906e68e3faab905f86b
Signed-off-by: Chun XU <chunx@nvidia.com>
Reviewed-on: http://git-master/r/1277092
(cherry picked from commit 2beab2dcfc4e40712004500df99633d59ae0e70c)
This commit is contained in:
Chun XU
2016-12-27 17:35:07 +08:00
committed by Prafull Suryawanshi
parent 0a6fb5c3c9
commit c061b057db
1 changed files with 68 additions and 1 deletions
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69
drivers/misc/tegra-cec/tegra_cec.c
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@@ -1,7 +1,7 @@
/*
* drivers/misc/tegra-cec/tegra_cec.c
*
* Copyright (c) 2012-2016, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2012-2017, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -42,6 +42,25 @@
#include "tegra_cec.h"
#include "../../../../display/drivers/video/tegra/dc/dc_priv.h"
#include "../../../../display/drivers/video/tegra/dc/dc.h"
#define LOGICAL_ADDRESS_RESERVED2 0xD
#define LOGICAL_ADDRESS_TV 0x0
#define LOGICAL_ADDRESS_BROADCAST 0xF
#define TEXT_VIEW_ON 0x0D
#define ACTIVE_SOURCE 0x82
static bool previous_reboot_reason_is_recovery, text_view_on_sent;
static u8 text_view_on_command[] = {
LOGICAL_ADDRESS_RESERVED2 << 4 | LOGICAL_ADDRESS_TV,
TEXT_VIEW_ON
};
static u8 active_source_command[] = {
LOGICAL_ADDRESS_RESERVED2 << 4 | LOGICAL_ADDRESS_BROADCAST,
ACTIVE_SOURCE,
0x00,
0x00
};
struct tegra_cec_soc {
int powergate_id;
@@ -293,6 +312,40 @@ static const struct file_operations tegra_cec_fops = {
.write = tegra_cec_write,
};
static int tegra_cec_send_one_touch_play(struct tegra_cec *cec)
{
int res = 0;
u8 phy_address[2] = {0};
text_view_on_sent = true;
res = tegra_dc_get_source_physical_address(phy_address);
if (res) {
dev_warn(cec->dev, "Can't find physical addresse.\n");
return res;
}
dev_info(cec->dev, "physical address: %02x:%02x.\n",
phy_address[0], phy_address[1]);
active_source_command[2] = phy_address[0];
active_source_command[3] = phy_address[1];
mutex_lock(&cec->tx_lock);
res = tegra_cec_native_write_l(cec, text_view_on_command,
sizeof(text_view_on_command));
dev_notice(cec->dev, "Sent <Text View On> res: %d.\n", res);
if (!res) {
res = tegra_cec_native_write_l(cec, active_source_command,
sizeof(active_source_command));
dev_notice(cec->dev,
"Broadcast <Active Source> res: %d.\n", res);
}
mutex_unlock(&cec->tx_lock);
return res;
}
static void tegra_cec_init(struct tegra_cec *cec)
{
cec->rx_wake = 0;
@@ -370,6 +423,8 @@ static void tegra_cec_init(struct tegra_cec *cec)
atomic_set(&cec->init_done, 1);
wake_up_interruptible(&cec->init_waitq);
if (!text_view_on_sent && !previous_reboot_reason_is_recovery)
tegra_cec_send_one_touch_play(cec);
dev_notice(cec->dev, "%s Done.\n", __func__);
}
@@ -634,6 +689,18 @@ static int tegra_cec_resume(struct platform_device *pdev)
}
#endif
static int __init check_previous_reboot_reason_is_recovery(char *options)
{
previous_reboot_reason_is_recovery = true;
pr_info("tegra_cec: the previous_reboot_reason is%s recovery.\n",
previous_reboot_reason_is_recovery ? "" : " not");
return 0;
}
early_param("post_recovery", check_previous_reboot_reason_is_recovery);
static struct tegra_cec_soc tegra210_soc_data = {
.powergate_id = TEGRA210_POWER_DOMAIN_DISA,
};