[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/mfd/ab8500-sysctrl.c b/src/kernel/linux/v4.14/drivers/mfd/ab8500-sysctrl.c
new file mode 100644
index 0000000..5b0a085
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/mfd/ab8500-sysctrl.c
@@ -0,0 +1,171 @@
+/*
+ * AB8500 system control driver
+ *
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> for ST Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/reboot.h>
+#include <linux/signal.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500/ab8500-sysctrl.h>
+
+/* RtcCtrl bits */
+#define AB8500_ALARM_MIN_LOW 0x08
+#define AB8500_ALARM_MIN_MID 0x09
+#define RTC_CTRL 0x0B
+#define RTC_ALARM_ENABLE 0x4
+
+static struct device *sysctrl_dev;
+
+static void ab8500_power_off(void)
+{
+ sigset_t old;
+ sigset_t all;
+ static const char * const pss[] = {"ab8500_ac", "pm2301", "ab8500_usb"};
+ int i;
+ bool charger_present = false;
+ union power_supply_propval val;
+ struct power_supply *psy;
+ int ret;
+
+ if (sysctrl_dev == NULL) {
+ pr_err("%s: sysctrl not initialized\n", __func__);
+ return;
+ }
+
+ /*
+ * If we have a charger connected and we're powering off,
+ * reboot into charge-only mode.
+ */
+
+ for (i = 0; i < ARRAY_SIZE(pss); i++) {
+ psy = power_supply_get_by_name(pss[i]);
+ if (!psy)
+ continue;
+
+ ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE,
+ &val);
+ power_supply_put(psy);
+
+ if (!ret && val.intval) {
+ charger_present = true;
+ break;
+ }
+ }
+
+ if (!charger_present)
+ goto shutdown;
+
+ /* Check if battery is known */
+ psy = power_supply_get_by_name("ab8500_btemp");
+ if (psy) {
+ ret = power_supply_get_property(psy,
+ POWER_SUPPLY_PROP_TECHNOLOGY, &val);
+ if (!ret && val.intval != POWER_SUPPLY_TECHNOLOGY_UNKNOWN) {
+ pr_info("Charger '%s' is connected with known battery",
+ pss[i]);
+ pr_info(" - Rebooting.\n");
+ machine_restart("charging");
+ }
+ power_supply_put(psy);
+ }
+
+shutdown:
+ sigfillset(&all);
+
+ if (!sigprocmask(SIG_BLOCK, &all, &old)) {
+ (void)ab8500_sysctrl_set(AB8500_STW4500CTRL1,
+ AB8500_STW4500CTRL1_SWOFF |
+ AB8500_STW4500CTRL1_SWRESET4500N);
+ (void)sigprocmask(SIG_SETMASK, &old, NULL);
+ }
+}
+
+static inline bool valid_bank(u8 bank)
+{
+ return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
+ (bank == AB8500_SYS_CTRL2_BLOCK));
+}
+
+int ab8500_sysctrl_read(u16 reg, u8 *value)
+{
+ u8 bank;
+
+ if (sysctrl_dev == NULL)
+ return -EPROBE_DEFER;
+
+ bank = (reg >> 8);
+ if (!valid_bank(bank))
+ return -EINVAL;
+
+ return abx500_get_register_interruptible(sysctrl_dev, bank,
+ (u8)(reg & 0xFF), value);
+}
+EXPORT_SYMBOL(ab8500_sysctrl_read);
+
+int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
+{
+ u8 bank;
+
+ if (sysctrl_dev == NULL)
+ return -EPROBE_DEFER;
+
+ bank = (reg >> 8);
+ if (!valid_bank(bank)) {
+ pr_err("invalid bank\n");
+ return -EINVAL;
+ }
+
+ return abx500_mask_and_set_register_interruptible(sysctrl_dev, bank,
+ (u8)(reg & 0xFF), mask, value);
+}
+EXPORT_SYMBOL(ab8500_sysctrl_write);
+
+static int ab8500_sysctrl_probe(struct platform_device *pdev)
+{
+ sysctrl_dev = &pdev->dev;
+
+ if (!pm_power_off)
+ pm_power_off = ab8500_power_off;
+
+ return 0;
+}
+
+static int ab8500_sysctrl_remove(struct platform_device *pdev)
+{
+ sysctrl_dev = NULL;
+
+ if (pm_power_off == ab8500_power_off)
+ pm_power_off = NULL;
+
+ return 0;
+}
+
+static const struct of_device_id ab8500_sysctrl_match[] = {
+ { .compatible = "stericsson,ab8500-sysctrl", },
+ {}
+};
+
+static struct platform_driver ab8500_sysctrl_driver = {
+ .driver = {
+ .name = "ab8500-sysctrl",
+ .of_match_table = ab8500_sysctrl_match,
+ },
+ .probe = ab8500_sysctrl_probe,
+ .remove = ab8500_sysctrl_remove,
+};
+
+static int __init ab8500_sysctrl_init(void)
+{
+ return platform_driver_register(&ab8500_sysctrl_driver);
+}
+arch_initcall(ab8500_sysctrl_init);