2 * OMAP2/3 System Control Module register access
4 * Copyright (C) 2007 Texas Instruments, Inc.
5 * Copyright (C) 2007 Nokia Corporation
7 * Written by Paul Walmsley
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.
15 #include <linux/kernel.h>
18 #include <plat/sdrc.h>
23 #include "cm-regbits-34xx.h"
24 #include "prm-regbits-34xx.h"
25 #include "prm2xxx_3xxx.h"
26 #include "cm2xxx_3xxx.h"
31 /* Used by omap3_ctrl_save_padconf() */
32 #define START_PADCONF_SAVE 0x2
33 #define PADCONF_SAVE_DONE 0x1
35 static void __iomem *omap2_ctrl_base;
36 static void __iomem *omap4_ctrl_pad_base;
38 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
39 struct omap3_scratchpad {
41 u32 public_restore_ptr;
42 u32 secure_ram_restore_ptr;
43 u32 sdrc_module_semaphore;
44 u32 prcm_block_offset;
45 u32 sdrc_block_offset;
48 struct omap3_scratchpad_prcm_block {
59 u32 cm_autoidle_pll_mpu;
60 u32 cm_clksel1_pll_mpu;
61 u32 cm_clksel2_pll_mpu;
65 struct omap3_scratchpad_sdrc_block {
97 void *omap3_secure_ram_storage;
100 * This is used to store ARM registers in SDRAM before attempting
101 * an MPU OFF. The save and restore happens from the SRAM sleep code.
102 * The address is stored in scratchpad, so that it can be used
103 * during the restore path.
105 u32 omap3_arm_context[128];
107 struct omap3_control_regs {
134 u32 dss_dpll_spreading;
135 u32 core_dpll_spreading;
136 u32 per_dpll_spreading;
137 u32 usbhost_dpll_spreading;
143 u32 padconf_sys_nirq;
146 static struct omap3_control_regs control_context;
147 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
149 #define OMAP_CTRL_REGADDR(reg) (omap2_ctrl_base + (reg))
150 #define OMAP4_CTRL_PAD_REGADDR(reg) (omap4_ctrl_pad_base + (reg))
152 void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
154 if (omap2_globals->ctrl)
155 omap2_ctrl_base = omap2_globals->ctrl;
157 if (omap2_globals->ctrl_pad)
158 omap4_ctrl_pad_base = omap2_globals->ctrl_pad;
161 void __iomem *omap_ctrl_base_get(void)
163 return omap2_ctrl_base;
166 u8 omap_ctrl_readb(u16 offset)
168 return __raw_readb(OMAP_CTRL_REGADDR(offset));
171 u16 omap_ctrl_readw(u16 offset)
173 return __raw_readw(OMAP_CTRL_REGADDR(offset));
176 u32 omap_ctrl_readl(u16 offset)
178 return __raw_readl(OMAP_CTRL_REGADDR(offset));
181 void omap_ctrl_writeb(u8 val, u16 offset)
183 __raw_writeb(val, OMAP_CTRL_REGADDR(offset));
186 void omap_ctrl_writew(u16 val, u16 offset)
188 __raw_writew(val, OMAP_CTRL_REGADDR(offset));
191 void omap_ctrl_writel(u32 val, u16 offset)
193 __raw_writel(val, OMAP_CTRL_REGADDR(offset));
197 * On OMAP4 control pad are not addressable from control
198 * core base. So the common omap_ctrl_read/write APIs breaks
199 * Hence export separate APIs to manage the omap4 pad control
200 * registers. This APIs will work only for OMAP4
203 u32 omap4_ctrl_pad_readl(u16 offset)
205 return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset));
208 void omap4_ctrl_pad_writel(u32 val, u16 offset)
210 __raw_writel(val, OMAP4_CTRL_PAD_REGADDR(offset));
213 #ifdef CONFIG_ARCH_OMAP3
216 * omap3_ctrl_write_boot_mode - set scratchpad boot mode for the next boot
217 * @bootmode: 8-bit value to pass to some boot code
219 * Set the bootmode in the scratchpad RAM. This is used after the
220 * system restarts. Not sure what actually uses this - it may be the
221 * bootloader, rather than the boot ROM - contrary to the preserved
222 * comment below. No return value.
224 void omap3_ctrl_write_boot_mode(u8 bootmode)
228 l = ('B' << 24) | ('M' << 16) | bootmode;
231 * Reserve the first word in scratchpad for communicating
232 * with the boot ROM. A pointer to a data structure
233 * describing the boot process can be stored there,
234 * cf. OMAP34xx TRM, Initialization / Software Booting
237 * XXX This should use some omap_ctrl_writel()-type function
239 __raw_writel(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4));
245 * omap_ctrl_write_dsp_boot_addr - set boot address for a remote processor
246 * @bootaddr: physical address of the boot loader
248 * Set boot address for the boot loader of a supported processor
249 * when a power ON sequence occurs.
251 void omap_ctrl_write_dsp_boot_addr(u32 bootaddr)
253 u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTADDR :
254 cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTADDR :
255 cpu_is_omap44xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR :
259 pr_err("%s: unsupported omap type\n", __func__);
263 omap_ctrl_writel(bootaddr, offset);
267 * omap_ctrl_write_dsp_boot_mode - set boot mode for a remote processor
268 * @bootmode: 8-bit value to pass to some boot code
270 * Sets boot mode for the boot loader of a supported processor
271 * when a power ON sequence occurs.
273 void omap_ctrl_write_dsp_boot_mode(u8 bootmode)
275 u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTMOD :
276 cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTMOD :
280 pr_err("%s: unsupported omap type\n", __func__);
284 omap_ctrl_writel(bootmode, offset);
287 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
289 * Clears the scratchpad contents in case of cold boot-
290 * called during bootup
292 void omap3_clear_scratchpad_contents(void)
294 u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET;
295 void __iomem *v_addr;
297 v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
298 if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
299 OMAP3430_GLOBAL_COLD_RST_MASK) {
300 for ( ; offset <= max_offset; offset += 0x4)
301 __raw_writel(0x0, (v_addr + offset));
302 omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
304 OMAP3_PRM_RSTST_OFFSET);
308 /* Populate the scratchpad structure with restore structure */
309 void omap3_save_scratchpad_contents(void)
311 void __iomem *scratchpad_address;
312 u32 arm_context_addr;
313 struct omap3_scratchpad scratchpad_contents;
314 struct omap3_scratchpad_prcm_block prcm_block_contents;
315 struct omap3_scratchpad_sdrc_block sdrc_block_contents;
318 * Populate the Scratchpad contents
320 * The "get_*restore_pointer" functions are used to provide a
321 * physical restore address where the ROM code jumps while waking
322 * up from MPU OFF/OSWR state.
323 * The restore pointer is stored into the scratchpad.
325 scratchpad_contents.boot_config_ptr = 0x0;
326 if (cpu_is_omap3630())
327 scratchpad_contents.public_restore_ptr =
328 virt_to_phys(omap3_restore_3630);
329 else if (omap_rev() != OMAP3430_REV_ES3_0 &&
330 omap_rev() != OMAP3430_REV_ES3_1)
331 scratchpad_contents.public_restore_ptr =
332 virt_to_phys(omap3_restore);
334 scratchpad_contents.public_restore_ptr =
335 virt_to_phys(omap3_restore_es3);
337 if (omap_type() == OMAP2_DEVICE_TYPE_GP)
338 scratchpad_contents.secure_ram_restore_ptr = 0x0;
340 scratchpad_contents.secure_ram_restore_ptr =
341 (u32) __pa(omap3_secure_ram_storage);
342 scratchpad_contents.sdrc_module_semaphore = 0x0;
343 scratchpad_contents.prcm_block_offset = 0x2C;
344 scratchpad_contents.sdrc_block_offset = 0x64;
346 /* Populate the PRCM block contents */
347 prcm_block_contents.prm_clksrc_ctrl =
348 omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
349 OMAP3_PRM_CLKSRC_CTRL_OFFSET);
350 prcm_block_contents.prm_clksel =
351 omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
352 OMAP3_PRM_CLKSEL_OFFSET);
353 prcm_block_contents.cm_clksel_core =
354 omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL);
355 prcm_block_contents.cm_clksel_wkup =
356 omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
357 prcm_block_contents.cm_clken_pll =
358 omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
360 * As per erratum i671, ROM code does not respect the PER DPLL
361 * programming scheme if CM_AUTOIDLE_PLL..AUTO_PERIPH_DPLL == 1.
362 * Then, in anycase, clear these bits to avoid extra latencies.
364 prcm_block_contents.cm_autoidle_pll =
365 omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) &
366 ~OMAP3430_AUTO_PERIPH_DPLL_MASK;
367 prcm_block_contents.cm_clksel1_pll =
368 omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL);
369 prcm_block_contents.cm_clksel2_pll =
370 omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL);
371 prcm_block_contents.cm_clksel3_pll =
372 omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3);
373 prcm_block_contents.cm_clken_pll_mpu =
374 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL);
375 prcm_block_contents.cm_autoidle_pll_mpu =
376 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL);
377 prcm_block_contents.cm_clksel1_pll_mpu =
378 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL);
379 prcm_block_contents.cm_clksel2_pll_mpu =
380 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL);
381 prcm_block_contents.prcm_block_size = 0x0;
383 /* Populate the SDRC block contents */
384 sdrc_block_contents.sysconfig =
385 (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF);
386 sdrc_block_contents.cs_cfg =
387 (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF);
388 sdrc_block_contents.sharing =
389 (sdrc_read_reg(SDRC_SHARING) & 0xFFFF);
390 sdrc_block_contents.err_type =
391 (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF);
392 sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL);
393 sdrc_block_contents.dll_b_ctrl = 0x0;
395 * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should
396 * be programed to issue automatic self refresh on timeout
397 * of AUTO_CNT = 1 prior to any transition to OFF mode.
399 if ((omap_type() != OMAP2_DEVICE_TYPE_GP)
400 && (omap_rev() >= OMAP3430_REV_ES3_0))
401 sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) &
402 ~(SDRC_POWER_AUTOCOUNT_MASK|
403 SDRC_POWER_CLKCTRL_MASK)) |
404 (1 << SDRC_POWER_AUTOCOUNT_SHIFT) |
405 SDRC_SELF_REFRESH_ON_AUTOCOUNT;
407 sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER);
409 sdrc_block_contents.cs_0 = 0x0;
410 sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0);
411 sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF);
412 sdrc_block_contents.emr_1_0 = 0x0;
413 sdrc_block_contents.emr_2_0 = 0x0;
414 sdrc_block_contents.emr_3_0 = 0x0;
415 sdrc_block_contents.actim_ctrla_0 =
416 sdrc_read_reg(SDRC_ACTIM_CTRL_A_0);
417 sdrc_block_contents.actim_ctrlb_0 =
418 sdrc_read_reg(SDRC_ACTIM_CTRL_B_0);
419 sdrc_block_contents.rfr_ctrl_0 =
420 sdrc_read_reg(SDRC_RFR_CTRL_0);
421 sdrc_block_contents.cs_1 = 0x0;
422 sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1);
423 sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF;
424 sdrc_block_contents.emr_1_1 = 0x0;
425 sdrc_block_contents.emr_2_1 = 0x0;
426 sdrc_block_contents.emr_3_1 = 0x0;
427 sdrc_block_contents.actim_ctrla_1 =
428 sdrc_read_reg(SDRC_ACTIM_CTRL_A_1);
429 sdrc_block_contents.actim_ctrlb_1 =
430 sdrc_read_reg(SDRC_ACTIM_CTRL_B_1);
431 sdrc_block_contents.rfr_ctrl_1 =
432 sdrc_read_reg(SDRC_RFR_CTRL_1);
433 sdrc_block_contents.dcdl_1_ctrl = 0x0;
434 sdrc_block_contents.dcdl_2_ctrl = 0x0;
435 sdrc_block_contents.flags = 0x0;
436 sdrc_block_contents.block_size = 0x0;
438 arm_context_addr = virt_to_phys(omap3_arm_context);
440 /* Copy all the contents to the scratchpad location */
441 scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD);
442 memcpy_toio(scratchpad_address, &scratchpad_contents,
443 sizeof(scratchpad_contents));
444 /* Scratchpad contents being 32 bits, a divide by 4 done here */
445 memcpy_toio(scratchpad_address +
446 scratchpad_contents.prcm_block_offset,
447 &prcm_block_contents, sizeof(prcm_block_contents));
448 memcpy_toio(scratchpad_address +
449 scratchpad_contents.sdrc_block_offset,
450 &sdrc_block_contents, sizeof(sdrc_block_contents));
452 * Copies the address of the location in SDRAM where ARM
453 * registers get saved during a MPU OFF transition.
455 memcpy_toio(scratchpad_address +
456 scratchpad_contents.sdrc_block_offset +
457 sizeof(sdrc_block_contents), &arm_context_addr, 4);
460 void omap3_control_save_context(void)
462 control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG);
463 control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
464 control_context.mem_dftrw0 =
465 omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0);
466 control_context.mem_dftrw1 =
467 omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1);
468 control_context.msuspendmux_0 =
469 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0);
470 control_context.msuspendmux_1 =
471 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1);
472 control_context.msuspendmux_2 =
473 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2);
474 control_context.msuspendmux_3 =
475 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3);
476 control_context.msuspendmux_4 =
477 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4);
478 control_context.msuspendmux_5 =
479 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5);
480 control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL);
481 control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
482 control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE);
483 control_context.iva2_bootaddr =
484 omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR);
485 control_context.iva2_bootmod =
486 omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD);
487 control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0));
488 control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1));
489 control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2));
490 control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3));
491 control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4));
492 control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5));
493 control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6));
494 control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7));
495 control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8));
496 control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0);
497 control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
498 control_context.dss_dpll_spreading =
499 omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING);
500 control_context.core_dpll_spreading =
501 omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING);
502 control_context.per_dpll_spreading =
503 omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING);
504 control_context.usbhost_dpll_spreading =
505 omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
506 control_context.pbias_lite =
507 omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
508 control_context.temp_sensor =
509 omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR);
510 control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4);
511 control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5);
512 control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI);
513 control_context.padconf_sys_nirq =
514 omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ);
518 void omap3_control_restore_context(void)
520 omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG);
521 omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0);
522 omap_ctrl_writel(control_context.mem_dftrw0,
523 OMAP343X_CONTROL_MEM_DFTRW0);
524 omap_ctrl_writel(control_context.mem_dftrw1,
525 OMAP343X_CONTROL_MEM_DFTRW1);
526 omap_ctrl_writel(control_context.msuspendmux_0,
527 OMAP2_CONTROL_MSUSPENDMUX_0);
528 omap_ctrl_writel(control_context.msuspendmux_1,
529 OMAP2_CONTROL_MSUSPENDMUX_1);
530 omap_ctrl_writel(control_context.msuspendmux_2,
531 OMAP2_CONTROL_MSUSPENDMUX_2);
532 omap_ctrl_writel(control_context.msuspendmux_3,
533 OMAP2_CONTROL_MSUSPENDMUX_3);
534 omap_ctrl_writel(control_context.msuspendmux_4,
535 OMAP2_CONTROL_MSUSPENDMUX_4);
536 omap_ctrl_writel(control_context.msuspendmux_5,
537 OMAP2_CONTROL_MSUSPENDMUX_5);
538 omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL);
539 omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1);
540 omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE);
541 omap_ctrl_writel(control_context.iva2_bootaddr,
542 OMAP343X_CONTROL_IVA2_BOOTADDR);
543 omap_ctrl_writel(control_context.iva2_bootmod,
544 OMAP343X_CONTROL_IVA2_BOOTMOD);
545 omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0));
546 omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1));
547 omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2));
548 omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3));
549 omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4));
550 omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5));
551 omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6));
552 omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7));
553 omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8));
554 omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0);
555 omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1);
556 omap_ctrl_writel(control_context.dss_dpll_spreading,
557 OMAP343X_CONTROL_DSS_DPLL_SPREADING);
558 omap_ctrl_writel(control_context.core_dpll_spreading,
559 OMAP343X_CONTROL_CORE_DPLL_SPREADING);
560 omap_ctrl_writel(control_context.per_dpll_spreading,
561 OMAP343X_CONTROL_PER_DPLL_SPREADING);
562 omap_ctrl_writel(control_context.usbhost_dpll_spreading,
563 OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
564 omap_ctrl_writel(control_context.pbias_lite,
565 OMAP343X_CONTROL_PBIAS_LITE);
566 omap_ctrl_writel(control_context.temp_sensor,
567 OMAP343X_CONTROL_TEMP_SENSOR);
568 omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4);
569 omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5);
570 omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI);
571 omap_ctrl_writel(control_context.padconf_sys_nirq,
572 OMAP343X_CONTROL_PADCONF_SYSNIRQ);
576 void omap3630_ctrl_disable_rta(void)
578 if (!cpu_is_omap3630())
580 omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL);
584 * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM
586 * Tell the SCM to start saving the padconf registers, then wait for
587 * the process to complete. Returns 0 unconditionally, although it
588 * should also eventually be able to return -ETIMEDOUT, if the save
591 * XXX This function is missing a timeout. What should it be?
593 int omap3_ctrl_save_padconf(void)
597 /* Save the padconf registers */
598 cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
599 cpo |= START_PADCONF_SAVE;
600 omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF);
602 /* wait for the save to complete */
603 while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
604 & PADCONF_SAVE_DONE))
610 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */