1 files changed, 143 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/vp.h b/arch/arm/mach-omap2/vp.h
new file mode 100644
index 000000000000..7ce134f7de79
--- /dev/null
+++ b/arch/arm/mach-omap2/vp.h
@@ -0,0 +1,143 @@
+/*
+ * OMAP3/4 Voltage Processor (VP) structure and macro definitions
+ *
+ * Copyright (C) 2007, 2010 Texas Instruments, Inc.
+ * Rajendra Nayak <rnayak@ti.com>
+ * Lesly A M <x0080970@ti.com>
+ * Thara Gopinath <thara@ti.com>
+ *
+ * Copyright (C) 2008, 2011 Nokia Corporation
+ * Kalle Jokiniemi
+ * Paul Walmsley
+ *
+ * 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.
+ */
+#ifndef __ARCH_ARM_MACH_OMAP2_VP_H
+#define __ARCH_ARM_MACH_OMAP2_VP_H
+
+#include <linux/kernel.h>
+
+/* XXX document */
+#define VP_IDLE_TIMEOUT         200
+#define VP_TRANXDONE_TIMEOUT    300
+
+
+/**
+ * struct omap_vp_common_data - register data common to all VDDs
+ * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg
+ * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg
+ * @vpconfig_timeouten_mask: TIMEOUT bitmask in the PRM_VP*_CONFIG reg
+ * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg
+ * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg
+ * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg
+ * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg
+ * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg
+ * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg
+ * @vpconfig_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg
+ * @vpconfig_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg
+ * @vpconfig_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg
+ * @vpconfig_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg
+ * @vpconfig_vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg
+ * @vpconfig_vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg
+ * @vpconfig_vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg
+ *
+ * XXX It it not necessary to have both a mask and a shift for the same
+ *     bitfield - remove one
+ * XXX Many of these fields are wrongly named -- e.g., vpconfig_smps* -- fix!
+ */
+struct omap_vp_common_data {
+        u32 vpconfig_errorgain_mask;
+        u32 vpconfig_initvoltage_mask;
+        u32 vpconfig_timeouten;
+        u32 vpconfig_initvdd;
+        u32 vpconfig_forceupdate;
+        u32 vpconfig_vpenable;
+        u8 vpconfig_erroroffset_shift;
+        u8 vpconfig_errorgain_shift;
+        u8 vpconfig_initvoltage_shift;
+        u8 vstepmin_stepmin_shift;
+        u8 vstepmin_smpswaittimemin_shift;
+        u8 vstepmax_stepmax_shift;
+        u8 vstepmax_smpswaittimemax_shift;
+        u8 vlimitto_vddmin_shift;
+        u8 vlimitto_vddmax_shift;
+        u8 vlimitto_timeout_shift;
+};
+
+/**
+ * struct omap_vp_prm_irqst_data - PRM_IRQSTATUS_MPU.VP_TRANXDONE_ST data
+ * @prm_irqst_reg: reg offset for PRM_IRQSTATUS_MPU from top of PRM
+ * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg
+ *
+ * XXX prm_irqst_reg does not belong here
+ * XXX Note that on OMAP3, VP_TRANXDONE interrupt may not work due to a
+ *     hardware bug
+ * XXX This structure is probably not needed
+ */
+struct omap_vp_prm_irqst_data {
+        u8 prm_irqst_reg;
+        u32 tranxdone_status;
+};
+
+/**
+ * struct omap_vp_instance_data - VP register offsets (per-VDD)
+ * @vp_common: pointer to struct omap_vp_common_data * for this SoC
+ * @prm_irqst_data: pointer to struct omap_vp_prm_irqst_data for this VDD
+ * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start
+ * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start
+ * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start
+ * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start
+ * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start
+ *
+ * XXX vp_common is probably not needed since it is per-SoC
+ */
+struct omap_vp_instance_data {
+        const struct omap_vp_common_data *vp_common;
+        const struct omap_vp_prm_irqst_data *prm_irqst_data;
+        u8 vpconfig;
+        u8 vstepmin;
+        u8 vstepmax;
+        u8 vlimitto;
+        u8 vstatus;
+        u8 voltage;
+};
+
+/**
+ * struct omap_vp_runtime_data - VP data populated at runtime by code
+ * @vpconfig_erroroffset: value of ERROROFFSET bitfield in PRM_VP*_CONFIG
+ * @vpconfig_errorgain: value of ERRORGAIN bitfield in PRM_VP*_CONFIG
+ * @vstepmin_smpswaittimemin: value of SMPSWAITTIMEMIN bitfield in PRM_VP*_VSTEPMIN
+ * @vstepmax_smpswaittimemax: value of SMPSWAITTIMEMAX bitfield in PRM_VP*_VSTEPMAX
+ * @vlimitto_timeout: value of TIMEOUT bitfield in PRM_VP*_VLIMITTO
+ * @vstepmin_stepmin: value of VSTEPMIN bitfield in PRM_VP*_VSTEPMIN
+ * @vstepmax_stepmax: value of VSTEPMAX bitfield in PRM_VP*_VSTEPMAX
+ * @vlimitto_vddmin: value of VDDMIN bitfield in PRM_VP*_VLIMITTO
+ * @vlimitto_vddmax: value of VDDMAX bitfield in PRM_VP*_VLIMITTO
+ *
+ * XXX Is this structure really needed?  Why not just program the
+ * device directly?  They are in PRM space, therefore in the WKUP
+ * powerdomain, so register contents should not be lost in off-mode.
+ * XXX Some of these fields are incorrectly named, e.g., vstep*
+ */
+struct omap_vp_runtime_data {
+        u32 vpconfig_erroroffset;
+        u16 vpconfig_errorgain;
+        u16 vstepmin_smpswaittimemin;
+        u16 vstepmax_smpswaittimemax;
+        u16 vlimitto_timeout;
+        u8 vstepmin_stepmin;
+        u8 vstepmax_stepmax;
+        u8 vlimitto_vddmin;
+        u8 vlimitto_vddmax;
+};
+
+extern struct omap_vp_instance_data omap3_vp1_data;
+extern struct omap_vp_instance_data omap3_vp2_data;
+
+extern struct omap_vp_instance_data omap4_vp_mpu_data;
+extern struct omap_vp_instance_data omap4_vp_iva_data;
+extern struct omap_vp_instance_data omap4_vp_core_data;
+
+#endif