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Power: add wakeup interface in shutdown

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PD#150222: shutdown: add interface for alarm wakeup

1.add interface for alarm wakeup.
2.set alarm to wakeup system in shutdown.

Change-Id: I21adaecd15b0bc28c6c363835820c9e0291b87af
Signed-off-by: hong.guo <hong.guo@amlogic.com>
This commit is contained in:
hong.guo
2017-09-22 15:31:04 +08:00
committed by Jianxin Pan
parent 233f9f77d5
commit 7bde3afb56
2 changed files with 39 additions and 2 deletions
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3
arch/arm64/boot/dts/amlogic/mesongxl.dtsi
View File

@@ -159,7 +159,8 @@
meson_suspend:pm{
compatible = "amlogic, pm";
device_name = "aml_pm";
reg = <0x0 0xc810023c 0x0 0x4>;
reg = <0x0 0xc81000a8 0x0 0x4
0x0 0xc810023c 0x0 0x4>;
};
secmon {

38
drivers/amlogic/pm/gx_pm.c
View File

@@ -63,6 +63,7 @@ static u32 psci_get_version(void)
#undef pr_fmt
#define pr_fmt(fmt) "gxbb_pm: " fmt
static void __iomem *debug_reg;
static void __iomem *exit_reg;
static int max_idle_lvl;
static suspend_state_t pm_state;
@@ -178,6 +179,37 @@ ssize_t suspend_reason_store(struct device *dev, struct device_attribute *attr,
DEVICE_ATTR(suspend_reason, 0664, suspend_reason_show, suspend_reason_store);
ssize_t time_out_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
unsigned int val = 0, len;
val = readl(debug_reg);
len = sprintf(buf, "%d\n", val);
return len;
}
ssize_t time_out_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned int time_out;
int ret;
ret = kstrtouint(buf, 10, &time_out);
switch (ret) {
case 0:
writel(time_out, debug_reg);
break;
default:
return -EINVAL;
}
return count;
}
DEVICE_ATTR(time_out, 0664, time_out_show, time_out_store);
static int __init meson_pm_probe(struct platform_device *pdev)
{
struct device_node *cpu_node;
@@ -209,8 +241,12 @@ static int __init meson_pm_probe(struct platform_device *pdev)
suspend_set_ops(&meson_gx_ops);
}
exit_reg = of_iomap(pdev->dev.of_node, 0);
debug_reg = of_iomap(pdev->dev.of_node, 0);
exit_reg = of_iomap(pdev->dev.of_node, 1);
writel(0x0, debug_reg);
device_create_file(&pdev->dev, &dev_attr_suspend_reason);
device_create_file(&pdev->dev, &dev_attr_time_out);
device_rename(&pdev->dev, "aml_pm");
#ifdef CONFIG_AMLOGIC_LEGACY_EARLY_SUSPEND
if (lgcy_early_suspend_init())
return -1;