3 files changed, 69 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index aedb3e77908..ec48c4cf8ae 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_ARCH_OMAP3)		+= pm34xx.o sleep34xx.o voltage.o \
 obj-$(CONFIG_ARCH_OMAP4)                += pm44xx.o pm_bus.o
 obj-$(CONFIG_PM_DEBUG)                  += pm-debug.o
 obj-$(CONFIG_OMAP_SMARTREFLEX)          += sr_device.o smartreflex.o
+obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3)   += smartreflex-class3.o
 
 AFLAGS_sleep24xx.o                      :=-Wa,-march=armv6
 AFLAGS_sleep34xx.o                      :=-Wa,-march=armv7-a
diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c
new file mode 100644
index 00000000000..60e70552b4c
--- /dev/null
+++ b/arch/arm/mach-omap2/smartreflex-class3.c
@@ -0,0 +1,59 @@
+/*
+ * 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 <plat/smartreflex.h>
+
+static int sr_class3_enable(struct voltagedomain *voltdm)
+{
+        unsigned long volt = omap_voltage_get_nom_volt(voltdm);
+
+        if (!volt) {
+                pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n",
+                                __func__, voltdm->name);
+                return -ENODATA;
+        }
+
+        omap_vp_enable(voltdm);
+        return sr_enable(voltdm, volt);
+}
+
+static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset)
+{
+        omap_vp_disable(voltdm);
+        sr_disable(voltdm);
+        if (is_volt_reset)
+                omap_voltage_reset(voltdm);
+
+        return 0;
+}
+
+static int sr_class3_configure(struct voltagedomain *voltdm)
+{
+        return sr_configure_errgen(voltdm);
+}
+
+/* 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);
+}
+late_initcall(sr_class3_init);
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index f1673fb96fe..f4e05134aaf 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -57,6 +57,15 @@ config OMAP_SMARTREFLEX
           by default during system init via the enable_on_init flag
           which an be passed as platform data to the smartreflex driver.
 
+config OMAP_SMARTREFLEX_CLASS3
+        bool "Class 3 mode of Smartreflex Implementation"
+        depends on OMAP_SMARTREFLEX && TWL4030_CORE
+        help
+          Say Y to enable Class 3 implementation of Smartreflex
+
+          Class 3 implementation of Smartreflex employs continuous hardware
+          voltage calibration.
+
 config OMAP_RESET_CLOCKS
         bool "Reset unused clocks during boot"
         depends on ARCH_OMAP