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vrtc: add debug nodes, set alarm time and wake up system [1/1]

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PD#TV-3085

Problem:
Add VRTC debug interface into TL1 Android P

Solution:
add wakeup and wakeup_time debug nodes

if you want to set alarm time, for example, set alarm wakeup time 10s
echo 10 > /sys/kernel/debug/wakeup_time

if you want to wake the system when an alarm is triggered, like this
echo 1 > /sys/kernel/debug/wakeup

Verify:
tl1_t962x2_x301

Change-Id: Ic40db0d9cb4ac2cab615206518d8db22b4095f72
Signed-off-by: yuehu mi <yuehu.mi@amlogic.com>
This commit is contained in:
yuehu mi
2019-03-08 13:52:18 +08:00
committed by Dongjin Kim
parent 47110da7a6
commit e0d7887c28
1 changed files with 62 additions and 0 deletions
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62
drivers/amlogic/vrtc/aml_vrtc.c
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@@ -25,10 +25,55 @@
#include <linux/amlogic/cpu_version.h>
#include <linux/pm_wakeup.h>
#include <linux/amlogic/scpi_protocol.h>
#include <linux/debugfs.h>
#include <linux/input.h>
#include <linux/amlogic/pm.h>
static void __iomem *alarm_reg_vaddr;
static void __iomem *timere_low_vaddr, *timere_high_vaddr;
static unsigned int vrtc_init_date;
static int wakeup;
static int wakeup_time;
static struct input_dev *vinput_dev;
static void send_power_btn_wakeup(void)
{
if ((get_resume_method() == RTC_WAKEUP) ||
(get_resume_method() == AUTO_WAKEUP)) {
input_event(vinput_dev, EV_KEY, KEY_POWER, 1);
input_sync(vinput_dev);
input_event(vinput_dev, EV_KEY, KEY_POWER, 0);
input_sync(vinput_dev);
}
}
static int vinput_dev_init(struct platform_device *pdev)
{
int r;
vinput_dev = input_allocate_device();
if (!vinput_dev)
return -ENOMEM;
vinput_dev->name = "aml_vkeypad";
vinput_dev->phys = "keypad/input0";
vinput_dev->id.vendor = 0x0001;
vinput_dev->id.product = 0x0001;
vinput_dev->id.version = 0x0100;
set_bit(EV_KEY, vinput_dev->evbit);
set_bit(KEY_POWER, vinput_dev->keybit);
vinput_dev->dev.parent = &pdev->dev;
device_init_wakeup(&vinput_dev->dev, 1);
r = input_register_device(vinput_dev);
if (r) {
pr_err("failed to register power button: %d\n", r);
input_free_device(vinput_dev);
}
return r;
}
#define TIME_LEN 10
static int parse_init_date(const char *date)
@@ -204,6 +249,11 @@ static int aml_vrtc_probe(struct platform_device *pdev)
return -1;
platform_set_drvdata(pdev, vrtc);
vinput_dev_init(pdev);
debugfs_create_u32("wakeup", 0644, NULL, &wakeup);
debugfs_create_u32("wakeup_time", 0644, NULL, &wakeup_time);
return 0;
}
@@ -211,6 +261,8 @@ static int aml_vrtc_remove(struct platform_device *dev)
{
struct rtc_device *vrtc = platform_get_drvdata(dev);
input_unregister_device(vinput_dev);
rtc_device_unregister(vrtc);
return 0;
@@ -227,6 +279,11 @@ static int aml_vrtc_resume(struct platform_device *pdev)
if (!scpi_get_vrtc(&vrtc_init_date))
pr_debug("get vrtc: %us\n", vrtc_init_date);
if (wakeup > 0) {
pr_info("aml_vrtc_suspend wakeup=%d\n", wakeup);
send_power_btn_wakeup();
}
return 0;
}
@@ -234,6 +291,11 @@ static int aml_vrtc_suspend(struct platform_device *pdev, pm_message_t state)
{
u32 vrtc_val;
if (wakeup_time > 0) {
pr_info("aml_vrtc_suspend wakeup_time=%d\n", wakeup_time);
set_wakeup_time(wakeup_time);
}
vrtc_val = read_te();
if (scpi_set_vrtc(vrtc_val))