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+/*
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+ * OMAP3xxx PRM module functions
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+ *
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+ * Copyright (C) 2010-2012 Texas Instruments, Inc.
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+ * Copyright (C) 2010 Nokia Corporation
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+ * Benoît Cousson
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+ * Paul Walmsley
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+ * Rajendra Nayak <rnayak@ti.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/errno.h>
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+#include <linux/err.h>
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+#include <linux/io.h>
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+#include <linux/irq.h>
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+
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+#include "soc.h"
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+#include "common.h"
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+#include "vp.h"
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+#include "powerdomain.h"
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+#include "prm3xxx.h"
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+#include "prm2xxx_3xxx.h"
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+#include "cm2xxx_3xxx.h"
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+#include "prm-regbits-34xx.h"
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+
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+static const struct omap_prcm_irq omap3_prcm_irqs[] = {
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+ OMAP_PRCM_IRQ("wkup", 0, 0),
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+ OMAP_PRCM_IRQ("io", 9, 1),
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+};
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+
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+static struct omap_prcm_irq_setup omap3_prcm_irq_setup = {
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+ .ack = OMAP3_PRM_IRQSTATUS_MPU_OFFSET,
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+ .mask = OMAP3_PRM_IRQENABLE_MPU_OFFSET,
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+ .nr_regs = 1,
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+ .irqs = omap3_prcm_irqs,
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+ .nr_irqs = ARRAY_SIZE(omap3_prcm_irqs),
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+ .irq = 11 + OMAP_INTC_START,
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+ .read_pending_irqs = &omap3xxx_prm_read_pending_irqs,
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+ .ocp_barrier = &omap3xxx_prm_ocp_barrier,
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+ .save_and_clear_irqen = &omap3xxx_prm_save_and_clear_irqen,
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+ .restore_irqen = &omap3xxx_prm_restore_irqen,
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+};
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+
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+/*
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+ * omap3_prm_reset_src_map - map from bits in the PRM_RSTST hardware
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+ * register (which are specific to OMAP3xxx SoCs) to reset source ID
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+ * bit shifts (which is an OMAP SoC-independent enumeration)
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+ */
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+static struct prm_reset_src_map omap3xxx_prm_reset_src_map[] = {
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+ { OMAP3430_GLOBAL_COLD_RST_SHIFT, OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT },
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+ { OMAP3430_GLOBAL_SW_RST_SHIFT, OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT },
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+ { OMAP3430_SECURITY_VIOL_RST_SHIFT, OMAP_SECU_VIOL_RST_SRC_ID_SHIFT },
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+ { OMAP3430_MPU_WD_RST_SHIFT, OMAP_MPU_WD_RST_SRC_ID_SHIFT },
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+ { OMAP3430_SECURE_WD_RST_SHIFT, OMAP_MPU_WD_RST_SRC_ID_SHIFT },
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+ { OMAP3430_EXTERNAL_WARM_RST_SHIFT, OMAP_EXTWARM_RST_SRC_ID_SHIFT },
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+ { OMAP3430_VDD1_VOLTAGE_MANAGER_RST_SHIFT,
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+ OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT },
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+ { OMAP3430_VDD2_VOLTAGE_MANAGER_RST_SHIFT,
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+ OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT },
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+ { OMAP3430_ICEPICK_RST_SHIFT, OMAP_ICEPICK_RST_SRC_ID_SHIFT },
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+ { OMAP3430_ICECRUSHER_RST_SHIFT, OMAP_ICECRUSHER_RST_SRC_ID_SHIFT },
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+ { -1, -1 },
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+};
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+
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+/* PRM VP */
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+
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+/*
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+ * struct omap3_vp - OMAP3 VP register access description.
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+ * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg
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+ */
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+struct omap3_vp {
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+ u32 tranxdone_status;
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+};
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+
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+static struct omap3_vp omap3_vp[] = {
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+ [OMAP3_VP_VDD_MPU_ID] = {
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+ .tranxdone_status = OMAP3430_VP1_TRANXDONE_ST_MASK,
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+ },
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+ [OMAP3_VP_VDD_CORE_ID] = {
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+ .tranxdone_status = OMAP3430_VP2_TRANXDONE_ST_MASK,
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+ },
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+};
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+
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+#define MAX_VP_ID ARRAY_SIZE(omap3_vp);
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+
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+u32 omap3_prm_vp_check_txdone(u8 vp_id)
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+{
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+ struct omap3_vp *vp = &omap3_vp[vp_id];
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+ u32 irqstatus;
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+
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+ irqstatus = omap2_prm_read_mod_reg(OCP_MOD,
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+ OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
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+ return irqstatus & vp->tranxdone_status;
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+}
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+
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+void omap3_prm_vp_clear_txdone(u8 vp_id)
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+{
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+ struct omap3_vp *vp = &omap3_vp[vp_id];
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+
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+ omap2_prm_write_mod_reg(vp->tranxdone_status,
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+ OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
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+}
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+
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+u32 omap3_prm_vcvp_read(u8 offset)
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+{
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+ return omap2_prm_read_mod_reg(OMAP3430_GR_MOD, offset);
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+}
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+
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+void omap3_prm_vcvp_write(u32 val, u8 offset)
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+{
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+ omap2_prm_write_mod_reg(val, OMAP3430_GR_MOD, offset);
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+}
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+
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+u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset)
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+{
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+ return omap2_prm_rmw_mod_reg_bits(mask, bits, OMAP3430_GR_MOD, offset);
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+}
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+
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+/**
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+ * omap3xxx_prm_dpll3_reset - use DPLL3 reset to reboot the OMAP SoC
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+ *
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+ * Set the DPLL3 reset bit, which should reboot the SoC. This is the
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+ * recommended way to restart the SoC, considering Errata i520. No
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+ * return value.
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+ */
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+void omap3xxx_prm_dpll3_reset(void)
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