mach-ux500: voltage domain regulators for DB8500

The DB8500 has ePOD:s (electronic power domains) which are possible
to switch on/off to deactivate silicon blocks on the DB8500 SoC
by cutting their power without retention. We model these as simple
regulators with one bit on/off settings.

Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Martin Persson <martin.persson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

include/linux/regulator/db8500-prcmu.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
+ *
+ * Interface to power domain regulators on DB8500
+ */
+
+#ifndef __REGULATOR_H__
+#define __REGULATOR_H__
+
+/* Number of DB8500 regulators and regulator enumeration */
+enum db8500_regulator_id {
+	DB8500_REGULATOR_VAPE,
+	DB8500_REGULATOR_VARM,
+	DB8500_REGULATOR_VMODEM,
+	DB8500_REGULATOR_VPLL,
+	DB8500_REGULATOR_VSMPS1,
+	DB8500_REGULATOR_VSMPS2,
+	DB8500_REGULATOR_VSMPS3,
+	DB8500_REGULATOR_VRF1,
+	DB8500_REGULATOR_SWITCH_SVAMMDSP,
+	DB8500_REGULATOR_SWITCH_SVAMMDSPRET,
+	DB8500_REGULATOR_SWITCH_SVAPIPE,
+	DB8500_REGULATOR_SWITCH_SIAMMDSP,
+	DB8500_REGULATOR_SWITCH_SIAMMDSPRET,
+	DB8500_REGULATOR_SWITCH_SIAPIPE,
+	DB8500_REGULATOR_SWITCH_SGA,
+	DB8500_REGULATOR_SWITCH_B2R2_MCDE,
+	DB8500_REGULATOR_SWITCH_ESRAM12,
+	DB8500_REGULATOR_SWITCH_ESRAM12RET,
+	DB8500_REGULATOR_SWITCH_ESRAM34,
+	DB8500_REGULATOR_SWITCH_ESRAM34RET,
+	DB8500_NUM_REGULATORS
+};
+
+/*
+ * Exported interface for CPUIdle only. This function is called with all
+ * interrupts turned off.
+ */
+int power_state_active_is_enabled(void);
+
+#endif