arch/arm/mach-omap2/control.c

   1 /*
   2  * OMAP2/3 System Control Module register access
   3  *
   4  * Copyright (C) 2007 Texas Instruments, Inc.
   5  * Copyright (C) 2007 Nokia Corporation
   6  *
   7  * Written by Paul Walmsley
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13 #undef DEBUG
  14
  15 #include <linux/kernel.h>
  16 #include <linux/io.h>
  17
  18 #include <plat/common.h>
  19 #include <plat/sdrc.h>
  20
  21 #include "cm-regbits-34xx.h"
  22 #include "prm-regbits-34xx.h"
  23 #include "prm2xxx_3xxx.h"
  24 #include "cm2xxx_3xxx.h"
  25 #include "sdrc.h"
  26 #include "pm.h"
  27 #include "control.h"
  28
  29 /* Used by omap3_ctrl_save_padconf() */
  30 #define START_PADCONF_SAVE              0x2
  31 #define PADCONF_SAVE_DONE               0x1
  32
  33 static void __iomem *omap2_ctrl_base;
  34 static void __iomem *omap4_ctrl_pad_base;
  35
  36 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
  37 struct omap3_scratchpad {
  38         u32 boot_config_ptr;
  39         u32 public_restore_ptr;
  40         u32 secure_ram_restore_ptr;
  41         u32 sdrc_module_semaphore;
  42         u32 prcm_block_offset;
  43         u32 sdrc_block_offset;
  44 };
  45
  46 struct omap3_scratchpad_prcm_block {
  47         u32 prm_clksrc_ctrl;
  48         u32 prm_clksel;
  49         u32 cm_clksel_core;
  50         u32 cm_clksel_wkup;
  51         u32 cm_clken_pll;
  52         u32 cm_autoidle_pll;
  53         u32 cm_clksel1_pll;
  54         u32 cm_clksel2_pll;
  55         u32 cm_clksel3_pll;
  56         u32 cm_clken_pll_mpu;
  57         u32 cm_autoidle_pll_mpu;
  58         u32 cm_clksel1_pll_mpu;
  59         u32 cm_clksel2_pll_mpu;
  60         u32 prcm_block_size;
  61 };
  62
  63 struct omap3_scratchpad_sdrc_block {
  64         u16 sysconfig;
  65         u16 cs_cfg;
  66         u16 sharing;
  67         u16 err_type;
  68         u32 dll_a_ctrl;
  69         u32 dll_b_ctrl;
  70         u32 power;
  71         u32 cs_0;
  72         u32 mcfg_0;
  73         u16 mr_0;
  74         u16 emr_1_0;
  75         u16 emr_2_0;
  76         u16 emr_3_0;
  77         u32 actim_ctrla_0;
  78         u32 actim_ctrlb_0;
  79         u32 rfr_ctrl_0;
  80         u32 cs_1;
  81         u32 mcfg_1;
  82         u16 mr_1;
  83         u16 emr_1_1;
  84         u16 emr_2_1;
  85         u16 emr_3_1;
  86         u32 actim_ctrla_1;
  87         u32 actim_ctrlb_1;
  88         u32 rfr_ctrl_1;
  89         u16 dcdl_1_ctrl;
  90         u16 dcdl_2_ctrl;
  91         u32 flags;
  92         u32 block_size;
  93 };
  94
  95 void *omap3_secure_ram_storage;
  96
  97 /*
  98  * This is used to store ARM registers in SDRAM before attempting
  99  * an MPU OFF. The save and restore happens from the SRAM sleep code.
 100  * The address is stored in scratchpad, so that it can be used
 101  * during the restore path.
 102  */
 103 u32 omap3_arm_context[128];
 104
 105 struct omap3_control_regs {
 106         u32 sysconfig;
 107         u32 devconf0;
 108         u32 mem_dftrw0;
 109         u32 mem_dftrw1;
 110         u32 msuspendmux_0;
 111         u32 msuspendmux_1;
 112         u32 msuspendmux_2;
 113         u32 msuspendmux_3;
 114         u32 msuspendmux_4;
 115         u32 msuspendmux_5;
 116         u32 sec_ctrl;
 117         u32 devconf1;
 118         u32 csirxfe;
 119         u32 iva2_bootaddr;
 120         u32 iva2_bootmod;
 121         u32 debobs_0;
 122         u32 debobs_1;
 123         u32 debobs_2;
 124         u32 debobs_3;
 125         u32 debobs_4;
 126         u32 debobs_5;
 127         u32 debobs_6;
 128         u32 debobs_7;
 129         u32 debobs_8;
 130         u32 prog_io0;
 131         u32 prog_io1;
 132         u32 dss_dpll_spreading;
 133         u32 core_dpll_spreading;
 134         u32 per_dpll_spreading;
 135         u32 usbhost_dpll_spreading;
 136         u32 pbias_lite;
 137         u32 temp_sensor;
 138         u32 sramldo4;
 139         u32 sramldo5;
 140         u32 csi;
 141         u32 padconf_sys_nirq;
 142 };
 143
 144 static struct omap3_control_regs control_context;
 145 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
 146
 147 #define OMAP_CTRL_REGADDR(reg)          (omap2_ctrl_base + (reg))
 148 #define OMAP4_CTRL_PAD_REGADDR(reg)     (omap4_ctrl_pad_base + (reg))
 149
 150 void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
 151 {
 152         /* Static mapping, never released */
 153         if (omap2_globals->ctrl) {
 154                 omap2_ctrl_base = ioremap(omap2_globals->ctrl, SZ_4K);
 155                 WARN_ON(!omap2_ctrl_base);
 156         }
 157
 158         /* Static mapping, never released */
 159         if (omap2_globals->ctrl_pad) {
 160                 omap4_ctrl_pad_base = ioremap(omap2_globals->ctrl_pad, SZ_4K);
 161                 WARN_ON(!omap4_ctrl_pad_base);
 162         }
 163 }
 164
 165 void __iomem *omap_ctrl_base_get(void)
 166 {
 167         return omap2_ctrl_base;
 168 }
 169
 170 u8 omap_ctrl_readb(u16 offset)
 171 {
 172         return __raw_readb(OMAP_CTRL_REGADDR(offset));
 173 }
 174
 175 u16 omap_ctrl_readw(u16 offset)
 176 {
 177         return __raw_readw(OMAP_CTRL_REGADDR(offset));
 178 }
 179
 180 u32 omap_ctrl_readl(u16 offset)
 181 {
 182         return __raw_readl(OMAP_CTRL_REGADDR(offset));
 183 }
 184
 185 void omap_ctrl_writeb(u8 val, u16 offset)
 186 {
 187         __raw_writeb(val, OMAP_CTRL_REGADDR(offset));
 188 }
 189
 190 void omap_ctrl_writew(u16 val, u16 offset)
 191 {
 192         __raw_writew(val, OMAP_CTRL_REGADDR(offset));
 193 }
 194
 195 void omap_ctrl_writel(u32 val, u16 offset)
 196 {
 197         __raw_writel(val, OMAP_CTRL_REGADDR(offset));
 198 }
 199
 200 /*
 201  * On OMAP4 control pad are not addressable from control
 202  * core base. So the common omap_ctrl_read/write APIs breaks
 203  * Hence export separate APIs to manage the omap4 pad control
 204  * registers. This APIs will work only for OMAP4
 205  */
 206
 207 u32 omap4_ctrl_pad_readl(u16 offset)
 208 {
 209         return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset));
 210 }
 211
 212 void omap4_ctrl_pad_writel(u32 val, u16 offset)
 213 {
 214         __raw_writel(val, OMAP4_CTRL_PAD_REGADDR(offset));
 215 }
 216
 217 #ifdef CONFIG_ARCH_OMAP3
 218
 219 /**
 220  * omap3_ctrl_write_boot_mode - set scratchpad boot mode for the next boot
 221  * @bootmode: 8-bit value to pass to some boot code
 222  *
 223  * Set the bootmode in the scratchpad RAM.  This is used after the
 224  * system restarts.  Not sure what actually uses this - it may be the
 225  * bootloader, rather than the boot ROM - contrary to the preserved
 226  * comment below.  No return value.
 227  */
 228 void omap3_ctrl_write_boot_mode(u8 bootmode)
 229 {
 230         u32 l;
 231
 232         l = ('B' << 24) | ('M' << 16) | bootmode;
 233
 234         /*
 235          * Reserve the first word in scratchpad for communicating
 236          * with the boot ROM. A pointer to a data structure
 237          * describing the boot process can be stored there,
 238          * cf. OMAP34xx TRM, Initialization / Software Booting
 239          * Configuration.
 240          *
 241          * XXX This should use some omap_ctrl_writel()-type function
 242          */
 243         __raw_writel(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4));
 244 }
 245
 246 #endif
 247
 248 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
 249 /*
 250  * Clears the scratchpad contents in case of cold boot-
 251  * called during bootup
 252  */
 253 void omap3_clear_scratchpad_contents(void)
 254 {
 255         u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET;
 256         void __iomem *v_addr;
 257         u32 offset = 0;
 258         v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
 259         if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
 260             OMAP3430_GLOBAL_COLD_RST_MASK) {
 261                 for ( ; offset <= max_offset; offset += 0x4)
 262                         __raw_writel(0x0, (v_addr + offset));
 263                 omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
 264                                            OMAP3430_GR_MOD,
 265                                            OMAP3_PRM_RSTST_OFFSET);
 266         }
 267 }
 268
 269 /* Populate the scratchpad structure with restore structure */
 270 void omap3_save_scratchpad_contents(void)
 271 {
 272         void  __iomem *scratchpad_address;
 273         u32 arm_context_addr;
 274         struct omap3_scratchpad scratchpad_contents;
 275         struct omap3_scratchpad_prcm_block prcm_block_contents;
 276         struct omap3_scratchpad_sdrc_block sdrc_block_contents;
 277
 278         /*
 279          * Populate the Scratchpad contents
 280          *
 281          * The "get_*restore_pointer" functions are used to provide a
 282          * physical restore address where the ROM code jumps while waking
 283          * up from MPU OFF/OSWR state.
 284          * The restore pointer is stored into the scratchpad.
 285          */
 286         scratchpad_contents.boot_config_ptr = 0x0;
 287         if (cpu_is_omap3630())
 288                 scratchpad_contents.public_restore_ptr =
 289                         virt_to_phys(get_omap3630_restore_pointer());
 290         else if (omap_rev() != OMAP3430_REV_ES3_0 &&
 291                                         omap_rev() != OMAP3430_REV_ES3_1)
 292                 scratchpad_contents.public_restore_ptr =
 293                         virt_to_phys(get_restore_pointer());
 294         else
 295                 scratchpad_contents.public_restore_ptr =
 296                         virt_to_phys(get_es3_restore_pointer());
 297         if (omap_type() == OMAP2_DEVICE_TYPE_GP)
 298                 scratchpad_contents.secure_ram_restore_ptr = 0x0;
 299         else
 300                 scratchpad_contents.secure_ram_restore_ptr =
 301                         (u32) __pa(omap3_secure_ram_storage);
 302         scratchpad_contents.sdrc_module_semaphore = 0x0;
 303         scratchpad_contents.prcm_block_offset = 0x2C;
 304         scratchpad_contents.sdrc_block_offset = 0x64;
 305
 306         /* Populate the PRCM block contents */
 307         prcm_block_contents.prm_clksrc_ctrl =
 308                 omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
 309                                        OMAP3_PRM_CLKSRC_CTRL_OFFSET);
 310         prcm_block_contents.prm_clksel =
 311                 omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
 312                                        OMAP3_PRM_CLKSEL_OFFSET);
 313         prcm_block_contents.cm_clksel_core =
 314                         omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL);
 315         prcm_block_contents.cm_clksel_wkup =
 316                         omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
 317         prcm_block_contents.cm_clken_pll =
 318                         omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
 319         prcm_block_contents.cm_autoidle_pll =
 320                         omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_AUTOIDLE_PLL);
 321         prcm_block_contents.cm_clksel1_pll =
 322                         omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL);
 323         prcm_block_contents.cm_clksel2_pll =
 324                         omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL);
 325         prcm_block_contents.cm_clksel3_pll =
 326                         omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3);
 327         prcm_block_contents.cm_clken_pll_mpu =
 328                         omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL);
 329         prcm_block_contents.cm_autoidle_pll_mpu =
 330                         omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL);
 331         prcm_block_contents.cm_clksel1_pll_mpu =
 332                         omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL);
 333         prcm_block_contents.cm_clksel2_pll_mpu =
 334                         omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL);
 335         prcm_block_contents.prcm_block_size = 0x0;
 336
 337         /* Populate the SDRC block contents */
 338         sdrc_block_contents.sysconfig =
 339                         (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF);
 340         sdrc_block_contents.cs_cfg =
 341                         (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF);
 342         sdrc_block_contents.sharing =
 343                         (sdrc_read_reg(SDRC_SHARING) & 0xFFFF);
 344         sdrc_block_contents.err_type =
 345                         (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF);
 346         sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL);
 347         sdrc_block_contents.dll_b_ctrl = 0x0;
 348         /*
 349          * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should
 350          * be programed to issue automatic self refresh on timeout
 351          * of AUTO_CNT = 1 prior to any transition to OFF mode.
 352          */
 353         if ((omap_type() != OMAP2_DEVICE_TYPE_GP)
 354                         && (omap_rev() >= OMAP3430_REV_ES3_0))
 355                 sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) &
 356                                 ~(SDRC_POWER_AUTOCOUNT_MASK|
 357                                 SDRC_POWER_CLKCTRL_MASK)) |
 358                                 (1 << SDRC_POWER_AUTOCOUNT_SHIFT) |
 359                                 SDRC_SELF_REFRESH_ON_AUTOCOUNT;
 360         else
 361                 sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER);
 362
 363         sdrc_block_contents.cs_0 = 0x0;
 364         sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0);
 365         sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF);
 366         sdrc_block_contents.emr_1_0 = 0x0;
 367         sdrc_block_contents.emr_2_0 = 0x0;
 368         sdrc_block_contents.emr_3_0 = 0x0;
 369         sdrc_block_contents.actim_ctrla_0 =
 370                         sdrc_read_reg(SDRC_ACTIM_CTRL_A_0);
 371         sdrc_block_contents.actim_ctrlb_0 =
 372                         sdrc_read_reg(SDRC_ACTIM_CTRL_B_0);
 373         sdrc_block_contents.rfr_ctrl_0 =
 374                         sdrc_read_reg(SDRC_RFR_CTRL_0);
 375         sdrc_block_contents.cs_1 = 0x0;
 376         sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1);
 377         sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF;
 378         sdrc_block_contents.emr_1_1 = 0x0;
 379         sdrc_block_contents.emr_2_1 = 0x0;
 380         sdrc_block_contents.emr_3_1 = 0x0;
 381         sdrc_block_contents.actim_ctrla_1 =
 382                         sdrc_read_reg(SDRC_ACTIM_CTRL_A_1);
 383         sdrc_block_contents.actim_ctrlb_1 =
 384                         sdrc_read_reg(SDRC_ACTIM_CTRL_B_1);
 385         sdrc_block_contents.rfr_ctrl_1 =
 386                         sdrc_read_reg(SDRC_RFR_CTRL_1);
 387         sdrc_block_contents.dcdl_1_ctrl = 0x0;
 388         sdrc_block_contents.dcdl_2_ctrl = 0x0;
 389         sdrc_block_contents.flags = 0x0;
 390         sdrc_block_contents.block_size = 0x0;
 391
 392         arm_context_addr = virt_to_phys(omap3_arm_context);
 393
 394         /* Copy all the contents to the scratchpad location */
 395         scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD);
 396         memcpy_toio(scratchpad_address, &scratchpad_contents,
 397                  sizeof(scratchpad_contents));
 398         /* Scratchpad contents being 32 bits, a divide by 4 done here */
 399         memcpy_toio(scratchpad_address +
 400                 scratchpad_contents.prcm_block_offset,
 401                 &prcm_block_contents, sizeof(prcm_block_contents));
 402         memcpy_toio(scratchpad_address +
 403                 scratchpad_contents.sdrc_block_offset,
 404                 &sdrc_block_contents, sizeof(sdrc_block_contents));
 405         /*
 406          * Copies the address of the location in SDRAM where ARM
 407          * registers get saved during a MPU OFF transition.
 408          */
 409         memcpy_toio(scratchpad_address +
 410                 scratchpad_contents.sdrc_block_offset +
 411                 sizeof(sdrc_block_contents), &arm_context_addr, 4);
 412 }
 413
 414 void omap3_control_save_context(void)
 415 {
 416         control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG);
 417         control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 418         control_context.mem_dftrw0 =
 419                         omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0);
 420         control_context.mem_dftrw1 =
 421                         omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1);
 422         control_context.msuspendmux_0 =
 423                         omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0);
 424         control_context.msuspendmux_1 =
 425                         omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1);
 426         control_context.msuspendmux_2 =
 427                         omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2);
 428         control_context.msuspendmux_3 =
 429                         omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3);
 430         control_context.msuspendmux_4 =
 431                         omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4);
 432         control_context.msuspendmux_5 =
 433                         omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5);
 434         control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL);
 435         control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
 436         control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE);
 437         control_context.iva2_bootaddr =
 438                         omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR);
 439         control_context.iva2_bootmod =
 440                         omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD);
 441         control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0));
 442         control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1));
 443         control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2));
 444         control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3));
 445         control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4));
 446         control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5));
 447         control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6));
 448         control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7));
 449         control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8));
 450         control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0);
 451         control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
 452         control_context.dss_dpll_spreading =
 453                         omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING);
 454         control_context.core_dpll_spreading =
 455                         omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING);
 456         control_context.per_dpll_spreading =
 457                         omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING);
 458         control_context.usbhost_dpll_spreading =
 459                 omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
 460         control_context.pbias_lite =
 461                         omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
 462         control_context.temp_sensor =
 463                         omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR);
 464         control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4);
 465         control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5);
 466         control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI);
 467         control_context.padconf_sys_nirq =
 468                 omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ);
 469         return;
 470 }
 471
 472 void omap3_control_restore_context(void)
 473 {
 474         omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG);
 475         omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0);
 476         omap_ctrl_writel(control_context.mem_dftrw0,
 477                                         OMAP343X_CONTROL_MEM_DFTRW0);
 478         omap_ctrl_writel(control_context.mem_dftrw1,
 479                                         OMAP343X_CONTROL_MEM_DFTRW1);
 480         omap_ctrl_writel(control_context.msuspendmux_0,
 481                                         OMAP2_CONTROL_MSUSPENDMUX_0);
 482         omap_ctrl_writel(control_context.msuspendmux_1,
 483                                         OMAP2_CONTROL_MSUSPENDMUX_1);
 484         omap_ctrl_writel(control_context.msuspendmux_2,
 485                                         OMAP2_CONTROL_MSUSPENDMUX_2);
 486         omap_ctrl_writel(control_context.msuspendmux_3,
 487                                         OMAP2_CONTROL_MSUSPENDMUX_3);
 488         omap_ctrl_writel(control_context.msuspendmux_4,
 489                                         OMAP2_CONTROL_MSUSPENDMUX_4);
 490         omap_ctrl_writel(control_context.msuspendmux_5,
 491                                         OMAP2_CONTROL_MSUSPENDMUX_5);
 492         omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL);
 493         omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1);
 494         omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE);
 495         omap_ctrl_writel(control_context.iva2_bootaddr,
 496                                         OMAP343X_CONTROL_IVA2_BOOTADDR);
 497         omap_ctrl_writel(control_context.iva2_bootmod,
 498                                         OMAP343X_CONTROL_IVA2_BOOTMOD);
 499         omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0));
 500         omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1));
 501         omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2));
 502         omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3));
 503         omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4));
 504         omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5));
 505         omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6));
 506         omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7));
 507         omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8));
 508         omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0);
 509         omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1);
 510         omap_ctrl_writel(control_context.dss_dpll_spreading,
 511                                         OMAP343X_CONTROL_DSS_DPLL_SPREADING);
 512         omap_ctrl_writel(control_context.core_dpll_spreading,
 513                                         OMAP343X_CONTROL_CORE_DPLL_SPREADING);
 514         omap_ctrl_writel(control_context.per_dpll_spreading,
 515                                         OMAP343X_CONTROL_PER_DPLL_SPREADING);
 516         omap_ctrl_writel(control_context.usbhost_dpll_spreading,
 517                                 OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
 518         omap_ctrl_writel(control_context.pbias_lite,
 519                                         OMAP343X_CONTROL_PBIAS_LITE);
 520         omap_ctrl_writel(control_context.temp_sensor,
 521                                         OMAP343X_CONTROL_TEMP_SENSOR);
 522         omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4);
 523         omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5);
 524         omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI);
 525         omap_ctrl_writel(control_context.padconf_sys_nirq,
 526                          OMAP343X_CONTROL_PADCONF_SYSNIRQ);
 527         return;
 528 }
 529
 530 void omap3630_ctrl_disable_rta(void)
 531 {
 532         if (!cpu_is_omap3630())
 533                 return;
 534         omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL);
 535 }
 536
 537 /**
 538  * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM
 539  *
 540  * Tell the SCM to start saving the padconf registers, then wait for
 541  * the process to complete.  Returns 0 unconditionally, although it
 542  * should also eventually be able to return -ETIMEDOUT, if the save
 543  * does not complete.
 544  *
 545  * XXX This function is missing a timeout.  What should it be?
 546  */
 547 int omap3_ctrl_save_padconf(void)
 548 {
 549         u32 cpo;
 550
 551         /* Save the padconf registers */
 552         cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
 553         cpo |= START_PADCONF_SAVE;
 554         omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF);
 555
 556         /* wait for the save to complete */
 557         while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
 558                  & PADCONF_SAVE_DONE))
 559                 udelay(1);
 560
 561         return 0;
 562 }
 563
 564 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */