v4.19.13 snapshot.
diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c
new file mode 100644
index 0000000..d3a588c
--- /dev/null
+++ b/arch/arm/mach-omap2/smartreflex-class3.c
@@ -0,0 +1,62 @@
+/*
+ * Smart reflex Class 3 specific implementations
+ *
+ * Author: Thara Gopinath <thara@ti.com>
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Thara Gopinath <thara@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/power/smartreflex.h>
+#include "soc.h"
+#include "voltage.h"
+
+static int sr_class3_enable(struct omap_sr *sr)
+{
+ unsigned long volt = voltdm_get_voltage(sr->voltdm);
+
+ if (!volt) {
+ pr_warn("%s: Curr voltage unknown. Cannot enable %s\n",
+ __func__, sr->name);
+ return -ENODATA;
+ }
+
+ omap_vp_enable(sr->voltdm);
+ return sr_enable(sr, volt);
+}
+
+static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
+{
+ sr_disable_errgen(sr);
+ omap_vp_disable(sr->voltdm);
+ sr_disable(sr);
+ if (is_volt_reset)
+ voltdm_reset(sr->voltdm);
+
+ return 0;
+}
+
+static int sr_class3_configure(struct omap_sr *sr)
+{
+ return sr_configure_errgen(sr);
+}
+
+/* SR class3 structure */
+static struct omap_sr_class_data class3_data = {
+ .enable = sr_class3_enable,
+ .disable = sr_class3_disable,
+ .configure = sr_class3_configure,
+ .class_type = SR_CLASS3,
+};
+
+/* Smartreflex Class3 init API to be called from board file */
+static int __init sr_class3_init(void)
+{
+ pr_info("SmartReflex Class3 initialized\n");
+ return sr_register_class(&class3_data);
+}
+omap_late_initcall(sr_class3_init);