text: /*
   * OMAP2/3 System Control Module register access
   *
   * Copyright (C) 2007 Texas Instruments, Inc.
   * Copyright (C) 2007 Nokia Corporation
   *
   * Written by 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.
   */
  #undef DEBUG
  
  #include <linux/kernel.h>
  #include <linux/io.h>
  
  #include <plat/sdrc.h>
  
  #include "soc.h"
  #include "iomap.h"
  #include "common.h"
  #include "cm-regbits-34xx.h"
  #include "prm-regbits-34xx.h"
  #include "prm2xxx_3xxx.h"
  #include "cm2xxx_3xxx.h"
  #include "sdrc.h"
  #include "pm.h"
  #include "control.h"
  
  /* Used by omap3_ctrl_save_padconf() */
  #define START_PADCONF_SAVE		0x2
  #define PADCONF_SAVE_DONE		0x1
  
  static void __iomem *omap2_ctrl_base;
  static void __iomem *omap4_ctrl_pad_base;
  
  #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
  struct omap3_scratchpad {
  	u32 boot_config_ptr;
  	u32 public_restore_ptr;
  	u32 secure_ram_restore_ptr;
  	u32 sdrc_module_semaphore;
  	u32 prcm_block_offset;
  	u32 sdrc_block_offset;
  };
  
  struct omap3_scratchpad_prcm_block {
  	u32 prm_clksrc_ctrl;
  	u32 prm_clksel;
  	u32 cm_clksel_core;
  	u32 cm_clksel_wkup;
  	u32 cm_clken_pll;
  	u32 cm_autoidle_pll;
  	u32 cm_clksel1_pll;
  	u32 cm_clksel2_pll;
  	u32 cm_clksel3_pll;
  	u32 cm_clken_pll_mpu;
  	u32 cm_autoidle_pll_mpu;
  	u32 cm_clksel1_pll_mpu;
  	u32 cm_clksel2_pll_mpu;
  	u32 prcm_block_size;
  };
  
  struct omap3_scratchpad_sdrc_block {
  	u16 sysconfig;
  	u16 cs_cfg;
  	u16 sharing;
  	u16 err_type;
  	u32 dll_a_ctrl;
  	u32 dll_b_ctrl;
  	u32 power;
  	u32 cs_0;
  	u32 mcfg_0;
  	u16 mr_0;
  	u16 emr_1_0;
  	u16 emr_2_0;
  	u16 emr_3_0;
  	u32 actim_ctrla_0;
  	u32 actim_ctrlb_0;
  	u32 rfr_ctrl_0;
  	u32 cs_1;
  	u32 mcfg_1;
  	u16 mr_1;
  	u16 emr_1_1;
  	u16 emr_2_1;
  	u16 emr_3_1;
  	u32 actim_ctrla_1;
  	u32 actim_ctrlb_1;
  	u32 rfr_ctrl_1;
  	u16 dcdl_1_ctrl;
  	u16 dcdl_2_ctrl;
  	u32 flags;
  	u32 block_size;
  };
  
  void *omap3_secure_ram_storage;
  
  /*
   * This is used to store ARM registers in SDRAM before attempting
   * an MPU OFF. The save and restore happens from the SRAM sleep code.
   * The address is stored in scratchpad, so that it can be used
   * during the restore path.
   */
  u32 omap3_arm_context[128];
  
  struct omap3_control_regs {
  	u32 sysconfig;
  	u32 devconf0;
  	u32 mem_dftrw0;
  	u32 mem_dftrw1;
  	u32 msuspendmux_0;
  	u32 msuspendmux_1;
  	u32 msuspendmux_2;
  	u32 msuspendmux_3;
  	u32 msuspendmux_4;
  	u32 msuspendmux_5;
  	u32 sec_ctrl;
  	u32 devconf1;
  	u32 csirxfe;
  	u32 iva2_bootaddr;
  	u32 iva2_bootmod;
  	u32 debobs_0;
  	u32 debobs_1;
  	u32 debobs_2;
  	u32 debobs_3;
  	u32 debobs_4;
  	u32 debobs_5;
  	u32 debobs_6;
  	u32 debobs_7;
  	u32 debobs_8;
  	u32 prog_io0;
  	u32 prog_io1;
  	u32 dss_dpll_spreading;
  	u32 core_dpll_spreading;
  	u32 per_dpll_spreading;
  	u32 usbhost_dpll_spreading;
  	u32 pbias_lite;
  	u32 temp_sensor;
  	u32 sramldo4;
  	u32 sramldo5;
  	u32 csi;
  	u32 padconf_sys_nirq;
  };
  
  static struct omap3_control_regs control_context;
  #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
  
  #define OMAP_CTRL_REGADDR(reg)		(omap2_ctrl_base + (reg))
  #define OMAP4_CTRL_PAD_REGADDR(reg)	(omap4_ctrl_pad_base + (reg))
  
  void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
  {
  	if (omap2_globals->ctrl)
  		omap2_ctrl_base = omap2_globals->ctrl;
  
  	if (omap2_globals->ctrl_pad)
  		omap4_ctrl_pad_base = omap2_globals->ctrl_pad;
  }
  
  void __iomem *omap_ctrl_base_get(void)
  {
  	return omap2_ctrl_base;
  }
  
  u8 omap_ctrl_readb(u16 offset)
  {
  	return __raw_readb(OMAP_CTRL_REGADDR(offset));
  }
  
  u16 omap_ctrl_readw(u16 offset)
  {
  	return __raw_readw(OMAP_CTRL_REGADDR(offset));
  }
  
  u32 omap_ctrl_readl(u16 offset)
  {
  	return __raw_readl(OMAP_CTRL_REGADDR(offset));
  }
  
  void omap_ctrl_writeb(u8 val, u16 offset)
  {
  	__raw_writeb(val, OMAP_CTRL_REGADDR(offset));
  }
  
  void omap_ctrl_writew(u16 val, u16 offset)
  {
  	__raw_writew(val, OMAP_CTRL_REGADDR(offset));
  }
  
  void omap_ctrl_writel(u32 val, u16 offset)
  {
  	__raw_writel(val, OMAP_CTRL_REGADDR(offset));
  }
  
  /*
   * On OMAP4 control pad are not addressable from control
   * core base. So the common omap_ctrl_read/write APIs breaks
   * Hence export separate APIs to manage the omap4 pad control
   * registers. This APIs will work only for OMAP4
   */
  
  u32 omap4_ctrl_pad_readl(u16 offset)
  {
  	return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset));
  }
  
  void omap4_ctrl_pad_writel(u32 val, u16 offset)
  {
  	__raw_writel(val, OMAP4_CTRL_PAD_REGADDR(offset));
  }
  
  #ifdef CONFIG_ARCH_OMAP3
  
  /**
   * omap3_ctrl_write_boot_mode - set scratchpad boot mode for the next boot
   * @bootmode: 8-bit value to pass to some boot code
   *
   * Set the bootmode in the scratchpad RAM.  This is used after the
   * system restarts.  Not sure what actually uses this - it may be the
   * bootloader, rather than the boot ROM - contrary to the preserved
   * comment below.  No return value.
   */
  void omap3_ctrl_write_boot_mode(u8 bootmode)
  {
  	u32 l;
  
  	l = ('B' << 24) | ('M' << 16) | bootmode;
  
  	/*
  	 * Reserve the first word in scratchpad for communicating
  	 * with the boot ROM. A pointer to a data structure
  	 * describing the boot process can be stored there,
  	 * cf. OMAP34xx TRM, Initialization / Software Booting
  	 * Configuration.
  	 *
  	 * XXX This should use some omap_ctrl_writel()-type function
  	 */
  	__raw_writel(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4));
  }
  
  #endif
  
  /**
   * omap_ctrl_write_dsp_boot_addr - set boot address for a remote processor
   * @bootaddr: physical address of the boot loader
   *
   * Set boot address for the boot loader of a supported processor
   * when a power ON sequence occurs.
   */
  void omap_ctrl_write_dsp_boot_addr(u32 bootaddr)
  {
  	u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTADDR :
  		     cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTADDR :
  		     cpu_is_omap44xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR :
  		     0;
  
  	if (!offset) {
  		pr_err("%s: unsupported omap type\n", __func__);
  		return;
  	}
  
  	omap_ctrl_writel(bootaddr, offset);
  }
  
  /**
   * omap_ctrl_write_dsp_boot_mode - set boot mode for a remote processor
   * @bootmode: 8-bit value to pass to some boot code
   *
   * Sets boot mode for the boot loader of a supported processor
   * when a power ON sequence occurs.
   */
  void omap_ctrl_write_dsp_boot_mode(u8 bootmode)
  {
  	u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTMOD :
  		     cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTMOD :
  		     0;
  
  	if (!offset) {
  		pr_err("%s: unsupported omap type\n", __func__);
  		return;
  	}
  
  	omap_ctrl_writel(bootmode, offset);
  }
  
  #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
  /*
   * Clears the scratchpad contents in case of cold boot-
   * called during bootup
   */
  void omap3_clear_scratchpad_contents(void)
  {
  	u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET;
  	void __iomem *v_addr;
  	u32 offset = 0;
  	v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
  	if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
  	    OMAP3430_GLOBAL_COLD_RST_MASK) {
  		for ( ; offset <= max_offset; offset += 0x4)
  			__raw_writel(0x0, (v_addr + offset));
  		omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
  					   OMAP3430_GR_MOD,
  					   OMAP3_PRM_RSTST_OFFSET);
  	}
  }
  
  /* Populate the scratchpad structure with restore structure */
  void omap3_save_scratchpad_contents(void)
  {
  	void  __iomem *scratchpad_address;
  	u32 arm_context_addr;
  	struct omap3_scratchpad scratchpad_contents;
  	struct omap3_scratchpad_prcm_block prcm_block_contents;
  	struct omap3_scratchpad_sdrc_block sdrc_block_contents;
  
  	/*
  	 * Populate the Scratchpad contents
  	 *
  	 * The "get_*restore_pointer" functions are used to provide a
  	 * physical restore address where the ROM code jumps while waking
  	 * up from MPU OFF/OSWR state.
  	 * The restore pointer is stored into the scratchpad.
  	 */
  	scratchpad_contents.boot_config_ptr = 0x0;
  	if (cpu_is_omap3630())
  		scratchpad_contents.public_restore_ptr =
  			virt_to_phys(omap3_restore_3630);
  	else if (omap_rev() != OMAP3430_REV_ES3_0 &&
  					omap_rev() != OMAP3430_REV_ES3_1)
  		scratchpad_contents.public_restore_ptr =
  			virt_to_phys(omap3_restore);
  	else
  		scratchpad_contents.public_restore_ptr =
  			virt_to_phys(omap3_restore_es3);
  
  	if (omap_type() == OMAP2_DEVICE_TYPE_GP)
  		scratchpad_contents.secure_ram_restore_ptr = 0x0;
  	else
  		scratchpad_contents.secure_ram_restore_ptr =
  			(u32) __pa(omap3_secure_ram_storage);
  	scratchpad_contents.sdrc_module_semaphore = 0x0;
  	scratchpad_contents.prcm_block_offset = 0x2C;
  	scratchpad_contents.sdrc_block_offset = 0x64;
  
  	/* Populate the PRCM block contents */
  	prcm_block_contents.prm_clksrc_ctrl =
  		omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
  				       OMAP3_PRM_CLKSRC_CTRL_OFFSET);
  	prcm_block_contents.prm_clksel =
  		omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
  				       OMAP3_PRM_CLKSEL_OFFSET);
  	prcm_block_contents.cm_clksel_core =
  			omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL);
  	prcm_block_contents.cm_clksel_wkup =
  			omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
  	prcm_block_contents.cm_clken_pll =
  			omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
  	/*
  	 * As per erratum i671, ROM code does not respect the PER DPLL
  	 * programming scheme if CM_AUTOIDLE_PLL..AUTO_PERIPH_DPLL == 1.
  	 * Then,  in anycase, clear these bits to avoid extra latencies.
  	 */
  	prcm_block_contents.cm_autoidle_pll =
  			omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) &
  			~OMAP3430_AUTO_PERIPH_DPLL_MASK;
  	prcm_block_contents.cm_clksel1_pll =
  			omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL);
  	prcm_block_contents.cm_clksel2_pll =
  			omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL);
  	prcm_block_contents.cm_clksel3_pll =
  			omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3);
  	prcm_block_contents.cm_clken_pll_mpu =
  			omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL);
  	prcm_block_contents.cm_autoidle_pll_mpu =
  			omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL);
  	prcm_block_contents.cm_clksel1_pll_mpu =
  			omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL);
  	prcm_block_contents.cm_clksel2_pll_mpu =
  			omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL);
  	prcm_block_contents.prcm_block_size = 0x0;
  
  	/* Populate the SDRC block contents */
  	sdrc_block_contents.sysconfig =
  			(sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF);
  	sdrc_block_contents.cs_cfg =
  			(sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF);
  	sdrc_block_contents.sharing =
  			(sdrc_read_reg(SDRC_SHARING) & 0xFFFF);
  	sdrc_block_contents.err_type =
  			(sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF);
  	sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL);
  	sdrc_block_contents.dll_b_ctrl = 0x0;
  	/*
  	 * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should
  	 * be programed to issue automatic self refresh on timeout
  	 * of AUTO_CNT = 1 prior to any transition to OFF mode.
  	 */
  	if ((omap_type() != OMAP2_DEVICE_TYPE_GP)
  			&& (omap_rev() >= OMAP3430_REV_ES3_0))
  		sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) &
  				~(SDRC_POWER_AUTOCOUNT_MASK|
  				SDRC_POWER_CLKCTRL_MASK)) |
  				(1 << SDRC_POWER_AUTOCOUNT_SHIFT) |
  				SDRC_SELF_REFRESH_ON_AUTOCOUNT;
  	else
  		sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER);
  
  	sdrc_block_contents.cs_0 = 0x0;
  	sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0);
  	sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF);
  	sdrc_block_contents.emr_1_0 = 0x0;
  	sdrc_block_contents.emr_2_0 = 0x0;
  	sdrc_block_contents.emr_3_0 = 0x0;
  	sdrc_block_contents.actim_ctrla_0 =
  			sdrc_read_reg(SDRC_ACTIM_CTRL_A_0);
  	sdrc_block_contents.actim_ctrlb_0 =
  			sdrc_read_reg(SDRC_ACTIM_CTRL_B_0);
  	sdrc_block_contents.rfr_ctrl_0 =
  			sdrc_read_reg(SDRC_RFR_CTRL_0);
  	sdrc_block_contents.cs_1 = 0x0;
  	sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1);
  	sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF;
  	sdrc_block_contents.emr_1_1 = 0x0;
  	sdrc_block_contents.emr_2_1 = 0x0;
  	sdrc_block_contents.emr_3_1 = 0x0;
  	sdrc_block_contents.actim_ctrla_1 =
  			sdrc_read_reg(SDRC_ACTIM_CTRL_A_1);
  	sdrc_block_contents.actim_ctrlb_1 =
  			sdrc_read_reg(SDRC_ACTIM_CTRL_B_1);
  	sdrc_block_contents.rfr_ctrl_1 =
  			sdrc_read_reg(SDRC_RFR_CTRL_1);
  	sdrc_block_contents.dcdl_1_ctrl = 0x0;
  	sdrc_block_contents.dcdl_2_ctrl = 0x0;
  	sdrc_block_contents.flags = 0x0;
  	sdrc_block_contents.block_size = 0x0;
  
  	arm_context_addr = virt_to_phys(omap3_arm_context);
  
  	/* Copy all the contents to the scratchpad location */
  	scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD);
  	memcpy_toio(scratchpad_address, &scratchpad_contents,
  		 sizeof(scratchpad_contents));
  	/* Scratchpad contents being 32 bits, a divide by 4 done here */
  	memcpy_toio(scratchpad_address +
  		scratchpad_contents.prcm_block_offset,
  		&prcm_block_contents, sizeof(prcm_block_contents));
  	memcpy_toio(scratchpad_address +
  		scratchpad_contents.sdrc_block_offset,
  		&sdrc_block_contents, sizeof(sdrc_block_contents));
  	/*
  	 * Copies the address of the location in SDRAM where ARM
  	 * registers get saved during a MPU OFF transition.
  	 */
  	memcpy_toio(scratchpad_address +
  		scratchpad_contents.sdrc_block_offset +
  		sizeof(sdrc_block_contents), &arm_context_addr, 4);
  }
  
  void omap3_control_save_context(void)
  {
  	control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG);
  	control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
  	control_context.mem_dftrw0 =
  			omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0);
  	control_context.mem_dftrw1 =
  			omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1);
  	control_context.msuspendmux_0 =
  			omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0);
  	control_context.msuspendmux_1 =
  			omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1);
  	control_context.msuspendmux_2 =
  			omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2);
  	control_context.msuspendmux_3 =
  			omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3);
  	control_context.msuspendmux_4 =
  			omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4);
  	control_context.msuspendmux_5 =
  			omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5);
  	control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL);
  	control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  	control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE);
  	control_context.iva2_bootaddr =
  			omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR);
  	control_context.iva2_bootmod =
  			omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD);
  	control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0));
  	control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1));
  	control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2));
  	control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3));
  	control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4));
  	control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5));
  	control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6));
  	control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7));
  	control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8));
  	control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0);
  	control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
  	control_context.dss_dpll_spreading =
  			omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING);
  	control_context.core_dpll_spreading =
  			omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING);
  	control_context.per_dpll_spreading =
  			omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING);
  	control_context.usbhost_dpll_spreading =
  		omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
  	control_context.pbias_lite =
  			omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
  	control_context.temp_sensor =
  			omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR);
  	control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4);
  	control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5);
  	control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI);
  	control_context.padconf_sys_nirq =
  		omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ);
  	return;
  }
  
  void omap3_control_restore_context(void)
  {
  	omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG);
  	omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0);
  	omap_ctrl_writel(control_context.mem_dftrw0,
  					OMAP343X_CONTROL_MEM_DFTRW0);
  	omap_ctrl_writel(control_context.mem_dftrw1,
  					OMAP343X_CONTROL_MEM_DFTRW1);
  	omap_ctrl_writel(control_context.msuspendmux_0,
  					OMAP2_CONTROL_MSUSPENDMUX_0);
  	omap_ctrl_writel(control_context.msuspendmux_1,
  					OMAP2_CONTROL_MSUSPENDMUX_1);
  	omap_ctrl_writel(control_context.msuspendmux_2,
  					OMAP2_CONTROL_MSUSPENDMUX_2);
  	omap_ctrl_writel(control_context.msuspendmux_3,
  					OMAP2_CONTROL_MSUSPENDMUX_3);
  	omap_ctrl_writel(control_context.msuspendmux_4,
  					OMAP2_CONTROL_MSUSPENDMUX_4);
  	omap_ctrl_writel(control_context.msuspendmux_5,
  					OMAP2_CONTROL_MSUSPENDMUX_5);
  	omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL);
  	omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1);
  	omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE);
  	omap_ctrl_writel(control_context.iva2_bootaddr,
  					OMAP343X_CONTROL_IVA2_BOOTADDR);
  	omap_ctrl_writel(control_context.iva2_bootmod,
  					OMAP343X_CONTROL_IVA2_BOOTMOD);
  	omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0));
  	omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1));
  	omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2));
  	omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3));
  	omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4));
  	omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5));
  	omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6));
  	omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7));
  	omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8));
  	omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0);
  	omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1);
  	omap_ctrl_writel(control_context.dss_dpll_spreading,
  					OMAP343X_CONTROL_DSS_DPLL_SPREADING);
  	omap_ctrl_writel(control_context.core_dpll_spreading,
  					OMAP343X_CONTROL_CORE_DPLL_SPREADING);
  	omap_ctrl_writel(control_context.per_dpll_spreading,
  					OMAP343X_CONTROL_PER_DPLL_SPREADING);
  	omap_ctrl_writel(control_context.usbhost_dpll_spreading,
  				OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
  	omap_ctrl_writel(control_context.pbias_lite,
  					OMAP343X_CONTROL_PBIAS_LITE);
  	omap_ctrl_writel(control_context.temp_sensor,
  					OMAP343X_CONTROL_TEMP_SENSOR);
  	omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4);
  	omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5);
  	omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI);
  	omap_ctrl_writel(control_context.padconf_sys_nirq,
  			 OMAP343X_CONTROL_PADCONF_SYSNIRQ);
  	return;
  }
  
  void omap3630_ctrl_disable_rta(void)
  {
  	if (!cpu_is_omap3630())
  		return;
  	omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL);
  }
  
  /**
   * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM
   *
   * Tell the SCM to start saving the padconf registers, then wait for
   * the process to complete.  Returns 0 unconditionally, although it
   * should also eventually be able to return -ETIMEDOUT, if the save
   * does not complete.
   *
   * XXX This function is missing a timeout.  What should it be?
   */
  int omap3_ctrl_save_padconf(void)
  {
  	u32 cpo;
  
  	/* Save the padconf registers */
  	cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
  	cpo |= START_PADCONF_SAVE;
  	omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF);
  
  	/* wait for the save to complete */
  	while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
  		 & PADCONF_SAVE_DONE))
  		udelay(1);
  
  	return 0;
  }
  
  #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
  