sysreset: implement TPS80031 sysreset functions

TPS80031/TPS80032 PMICs have embedded power control functions
used by some device to initiane device power off. Implement it as
sysreset driver.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/drivers/sysreset/sysreset_tps80031.c b/drivers/sysreset/sysreset_tps80031.c
new file mode 100644
index 0000000000..50024fe4e7
--- /dev/null
+++ b/drivers/sysreset/sysreset_tps80031.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <dm.h>
+#include <i2c.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <power/pmic.h>
+#include <power/tps80031.h>
+
+static int tps80031_sysreset_request(struct udevice *dev,
+				     enum sysreset_t type)
+{
+	switch (type) {
+	case SYSRESET_POWER:
+		/* TPS80031: SW_RESET > PHOENIX_DEV_ON */
+		pmic_reg_write(dev->parent, TPS80031_PHOENIX_DEV_ON, SW_RESET);
+		break;
+	case SYSRESET_POWER_OFF:
+		/* TPS80031: DEVOFF > PHOENIX_DEV_ON */
+		pmic_reg_write(dev->parent, TPS80031_PHOENIX_DEV_ON, DEVOFF);
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops tps80031_sysreset = {
+	.request = tps80031_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_tps80031) = {
+	.id	= UCLASS_SYSRESET,
+	.name	= TPS80031_RST_DRIVER,
+	.ops	= &tps80031_sysreset,
+};