From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/drivers/power/reset/sc27xx-poweroff.c | 21 +++++++++++++++++----
1 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/kernel/drivers/power/reset/sc27xx-poweroff.c b/kernel/drivers/power/reset/sc27xx-poweroff.c
index 29fb08b..90287c3 100644
--- a/kernel/drivers/power/reset/sc27xx-poweroff.c
+++ b/kernel/drivers/power/reset/sc27xx-poweroff.c
@@ -6,6 +6,7 @@
#include <linux/cpu.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/regmap.h>
@@ -13,6 +14,8 @@
#define SC27XX_PWR_PD_HW 0xc2c
#define SC27XX_PWR_OFF_EN BIT(0)
+#define SC27XX_SLP_CTRL 0xdf0
+#define SC27XX_LDO_XTL_EN BIT(3)
static struct regmap *regmap;
@@ -27,10 +30,13 @@
*/
static void sc27xx_poweroff_shutdown(void)
{
-#ifdef CONFIG_PM_SLEEP_SMP
- int cpu = smp_processor_id();
+#ifdef CONFIG_HOTPLUG_CPU
+ int cpu;
- freeze_secondary_cpus(cpu);
+ for_each_online_cpu(cpu) {
+ if (cpu != smp_processor_id())
+ remove_cpu(cpu);
+ }
#endif
}
@@ -40,6 +46,9 @@
static void sc27xx_poweroff_do_poweroff(void)
{
+ /* Disable the external subsys connection's power firstly */
+ regmap_write(regmap, SC27XX_SLP_CTRL, SC27XX_LDO_XTL_EN);
+
regmap_write(regmap, SC27XX_PWR_PD_HW, SC27XX_PWR_OFF_EN);
}
@@ -63,4 +72,8 @@
.name = "sc27xx-poweroff",
},
};
-builtin_platform_driver(sc27xx_poweroff_driver);
+module_platform_driver(sc27xx_poweroff_driver);
+
+MODULE_DESCRIPTION("Power off driver for SC27XX PMIC Device");
+MODULE_AUTHOR("Baolin Wang <baolin.wang@unisoc.com>");
+MODULE_LICENSE("GPL v2");
--
Gitblit v1.6.2