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1/*
2 * OMAP2/3 System Control Module register access
3 *
4 * Copyright (C) 2007, 2012 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 "soc.h"
19#include "iomap.h"
20#include "common.h"
21#include "cm-regbits-34xx.h"
22#include "prm-regbits-34xx.h"
23#include "prm3xxx.h"
24#include "cm3xxx.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
33static void __iomem *omap2_ctrl_base;
34static void __iomem *omap4_ctrl_pad_base;
35
36#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
37struct 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
46struct omap3_scratchpad_prcm_block {
47 u32 prm_clksrc_ctrl;
48 u32 prm_clksel;
49 u32 cm_contents[11];
50 u32 prcm_block_size;
51};
52
53struct omap3_scratchpad_sdrc_block {
54 u16 sysconfig;
55 u16 cs_cfg;
56 u16 sharing;
57 u16 err_type;
58 u32 dll_a_ctrl;
59 u32 dll_b_ctrl;
60 u32 power;
61 u32 cs_0;
62 u32 mcfg_0;
63 u16 mr_0;
64 u16 emr_1_0;
65 u16 emr_2_0;
66 u16 emr_3_0;
67 u32 actim_ctrla_0;
68 u32 actim_ctrlb_0;
69 u32 rfr_ctrl_0;
70 u32 cs_1;
71 u32 mcfg_1;
72 u16 mr_1;
73 u16 emr_1_1;
74 u16 emr_2_1;
75 u16 emr_3_1;
76 u32 actim_ctrla_1;
77 u32 actim_ctrlb_1;
78 u32 rfr_ctrl_1;
79 u16 dcdl_1_ctrl;
80 u16 dcdl_2_ctrl;
81 u32 flags;
82 u32 block_size;
83};
84
85void *omap3_secure_ram_storage;
86
87/*
88 * This is used to store ARM registers in SDRAM before attempting
89 * an MPU OFF. The save and restore happens from the SRAM sleep code.
90 * The address is stored in scratchpad, so that it can be used
91 * during the restore path.
92 */
93u32 omap3_arm_context[128];
94
95struct omap3_control_regs {
96 u32 sysconfig;
97 u32 devconf0;
98 u32 mem_dftrw0;
99 u32 mem_dftrw1;
100 u32 msuspendmux_0;
101 u32 msuspendmux_1;
102 u32 msuspendmux_2;
103 u32 msuspendmux_3;
104 u32 msuspendmux_4;
105 u32 msuspendmux_5;
106 u32 sec_ctrl;
107 u32 devconf1;
108 u32 csirxfe;
109 u32 iva2_bootaddr;
110 u32 iva2_bootmod;
111 u32 debobs_0;
112 u32 debobs_1;
113 u32 debobs_2;
114 u32 debobs_3;
115 u32 debobs_4;
116 u32 debobs_5;
117 u32 debobs_6;
118 u32 debobs_7;
119 u32 debobs_8;
120 u32 prog_io0;
121 u32 prog_io1;
122 u32 dss_dpll_spreading;
123 u32 core_dpll_spreading;
124 u32 per_dpll_spreading;
125 u32 usbhost_dpll_spreading;
126 u32 pbias_lite;
127 u32 temp_sensor;
128 u32 sramldo4;
129 u32 sramldo5;
130 u32 csi;
131 u32 padconf_sys_nirq;
132};
133
134static struct omap3_control_regs control_context;
135#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
136
137#define OMAP_CTRL_REGADDR(reg) (omap2_ctrl_base + (reg))
138#define OMAP4_CTRL_PAD_REGADDR(reg) (omap4_ctrl_pad_base + (reg))
139
140void __init omap2_set_globals_control(void __iomem *ctrl,
141 void __iomem *ctrl_pad)
142{
143 omap2_ctrl_base = ctrl;
144 omap4_ctrl_pad_base = ctrl_pad;
145}
146
147void __iomem *omap_ctrl_base_get(void)
148{
149 return omap2_ctrl_base;
150}
151
152u8 omap_ctrl_readb(u16 offset)
153{
154 return __raw_readb(OMAP_CTRL_REGADDR(offset));
155}
156
157u16 omap_ctrl_readw(u16 offset)
158{
159 return __raw_readw(OMAP_CTRL_REGADDR(offset));
160}
161
162u32 omap_ctrl_readl(u16 offset)
163{
164 return __raw_readl(OMAP_CTRL_REGADDR(offset));
165}
166
167void omap_ctrl_writeb(u8 val, u16 offset)
168{
169 __raw_writeb(val, OMAP_CTRL_REGADDR(offset));
170}
171
172void omap_ctrl_writew(u16 val, u16 offset)
173{
174 __raw_writew(val, OMAP_CTRL_REGADDR(offset));
175}
176
177void omap_ctrl_writel(u32 val, u16 offset)
178{
179 __raw_writel(val, OMAP_CTRL_REGADDR(offset));
180}
181
182/*
183 * On OMAP4 control pad are not addressable from control
184 * core base. So the common omap_ctrl_read/write APIs breaks
185 * Hence export separate APIs to manage the omap4 pad control
186 * registers. This APIs will work only for OMAP4
187 */
188
189u32 omap4_ctrl_pad_readl(u16 offset)
190{
191 return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset));
192}
193
194void omap4_ctrl_pad_writel(u32 val, u16 offset)
195{
196 __raw_writel(val, OMAP4_CTRL_PAD_REGADDR(offset));
197}
198
199#ifdef CONFIG_ARCH_OMAP3
200
201/**
202 * omap3_ctrl_write_boot_mode - set scratchpad boot mode for the next boot
203 * @bootmode: 8-bit value to pass to some boot code
204 *
205 * Set the bootmode in the scratchpad RAM. This is used after the
206 * system restarts. Not sure what actually uses this - it may be the
207 * bootloader, rather than the boot ROM - contrary to the preserved
208 * comment below. No return value.
209 */
210void omap3_ctrl_write_boot_mode(u8 bootmode)
211{
212 u32 l;
213
214 l = ('B' << 24) | ('M' << 16) | bootmode;
215
216 /*
217 * Reserve the first word in scratchpad for communicating
218 * with the boot ROM. A pointer to a data structure
219 * describing the boot process can be stored there,
220 * cf. OMAP34xx TRM, Initialization / Software Booting
221 * Configuration.
222 *
223 * XXX This should use some omap_ctrl_writel()-type function
224 */
225 __raw_writel(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4));
226}
227
228#endif
229
230/**
231 * omap_ctrl_write_dsp_boot_addr - set boot address for a remote processor
232 * @bootaddr: physical address of the boot loader
233 *
234 * Set boot address for the boot loader of a supported processor
235 * when a power ON sequence occurs.
236 */
237void omap_ctrl_write_dsp_boot_addr(u32 bootaddr)
238{
239 u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTADDR :
240 cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTADDR :
241 cpu_is_omap44xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR :
242 soc_is_omap54xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR :
243 0;
244
245 if (!offset) {
246 pr_err("%s: unsupported omap type\n", __func__);
247 return;
248 }
249
250 omap_ctrl_writel(bootaddr, offset);
251}
252
253/**
254 * omap_ctrl_write_dsp_boot_mode - set boot mode for a remote processor
255 * @bootmode: 8-bit value to pass to some boot code
256 *
257 * Sets boot mode for the boot loader of a supported processor
258 * when a power ON sequence occurs.
259 */
260void omap_ctrl_write_dsp_boot_mode(u8 bootmode)
261{
262 u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTMOD :
263 cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTMOD :
264 0;
265
266 if (!offset) {
267 pr_err("%s: unsupported omap type\n", __func__);
268 return;
269 }
270
271 omap_ctrl_writel(bootmode, offset);
272}
273
274#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
275/*
276 * Clears the scratchpad contents in case of cold boot-
277 * called during bootup
278 */
279void omap3_clear_scratchpad_contents(void)
280{
281 u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET;
282 void __iomem *v_addr;
283 u32 offset = 0;
284 v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
285 if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
286 OMAP3430_GLOBAL_COLD_RST_MASK) {
287 for ( ; offset <= max_offset; offset += 0x4)
288 __raw_writel(0x0, (v_addr + offset));
289 omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
290 OMAP3430_GR_MOD,
291 OMAP3_PRM_RSTST_OFFSET);
292 }
293}
294
295/* Populate the scratchpad structure with restore structure */
296void omap3_save_scratchpad_contents(void)
297{
298 void __iomem *scratchpad_address;
299 u32 arm_context_addr;
300 struct omap3_scratchpad scratchpad_contents;
301 struct omap3_scratchpad_prcm_block prcm_block_contents;
302 struct omap3_scratchpad_sdrc_block sdrc_block_contents;
303
304 /*
305 * Populate the Scratchpad contents
306 *
307 * The "get_*restore_pointer" functions are used to provide a
308 * physical restore address where the ROM code jumps while waking
309 * up from MPU OFF/OSWR state.
310 * The restore pointer is stored into the scratchpad.
311 */
312 scratchpad_contents.boot_config_ptr = 0x0;
313 if (cpu_is_omap3630())
314 scratchpad_contents.public_restore_ptr =
315 virt_to_phys(omap3_restore_3630);
316 else if (omap_rev() != OMAP3430_REV_ES3_0 &&
317 omap_rev() != OMAP3430_REV_ES3_1)
318 scratchpad_contents.public_restore_ptr =
319 virt_to_phys(omap3_restore);
320 else
321 scratchpad_contents.public_restore_ptr =
322 virt_to_phys(omap3_restore_es3);
323
324 if (omap_type() == OMAP2_DEVICE_TYPE_GP)
325 scratchpad_contents.secure_ram_restore_ptr = 0x0;
326 else
327 scratchpad_contents.secure_ram_restore_ptr =
328 (u32) __pa(omap3_secure_ram_storage);
329 scratchpad_contents.sdrc_module_semaphore = 0x0;
330 scratchpad_contents.prcm_block_offset = 0x2C;
331 scratchpad_contents.sdrc_block_offset = 0x64;
332
333 /* Populate the PRCM block contents */
334 prcm_block_contents.prm_clksrc_ctrl =
335 omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
336 OMAP3_PRM_CLKSRC_CTRL_OFFSET);
337 prcm_block_contents.prm_clksel =
338 omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
339 OMAP3_PRM_CLKSEL_OFFSET);
340
341 omap3_cm_save_scratchpad_contents(prcm_block_contents.cm_contents);
342
343 prcm_block_contents.prcm_block_size = 0x0;
344
345 /* Populate the SDRC block contents */
346 sdrc_block_contents.sysconfig =
347 (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF);
348 sdrc_block_contents.cs_cfg =
349 (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF);
350 sdrc_block_contents.sharing =
351 (sdrc_read_reg(SDRC_SHARING) & 0xFFFF);
352 sdrc_block_contents.err_type =
353 (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF);
354 sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL);
355 sdrc_block_contents.dll_b_ctrl = 0x0;
356 /*
357 * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should
358 * be programed to issue automatic self refresh on timeout
359 * of AUTO_CNT = 1 prior to any transition to OFF mode.
360 */
361 if ((omap_type() != OMAP2_DEVICE_TYPE_GP)
362 && (omap_rev() >= OMAP3430_REV_ES3_0))
363 sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) &
364 ~(SDRC_POWER_AUTOCOUNT_MASK|
365 SDRC_POWER_CLKCTRL_MASK)) |
366 (1 << SDRC_POWER_AUTOCOUNT_SHIFT) |
367 SDRC_SELF_REFRESH_ON_AUTOCOUNT;
368 else
369 sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER);
370
371 sdrc_block_contents.cs_0 = 0x0;
372 sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0);
373 sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF);
374 sdrc_block_contents.emr_1_0 = 0x0;
375 sdrc_block_contents.emr_2_0 = 0x0;
376 sdrc_block_contents.emr_3_0 = 0x0;
377 sdrc_block_contents.actim_ctrla_0 =
378 sdrc_read_reg(SDRC_ACTIM_CTRL_A_0);
379 sdrc_block_contents.actim_ctrlb_0 =
380 sdrc_read_reg(SDRC_ACTIM_CTRL_B_0);
381 sdrc_block_contents.rfr_ctrl_0 =
382 sdrc_read_reg(SDRC_RFR_CTRL_0);
383 sdrc_block_contents.cs_1 = 0x0;
384 sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1);
385 sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF;
386 sdrc_block_contents.emr_1_1 = 0x0;
387 sdrc_block_contents.emr_2_1 = 0x0;
388 sdrc_block_contents.emr_3_1 = 0x0;
389 sdrc_block_contents.actim_ctrla_1 =
390 sdrc_read_reg(SDRC_ACTIM_CTRL_A_1);
391 sdrc_block_contents.actim_ctrlb_1 =
392 sdrc_read_reg(SDRC_ACTIM_CTRL_B_1);
393 sdrc_block_contents.rfr_ctrl_1 =
394 sdrc_read_reg(SDRC_RFR_CTRL_1);
395 sdrc_block_contents.dcdl_1_ctrl = 0x0;
396 sdrc_block_contents.dcdl_2_ctrl = 0x0;
397 sdrc_block_contents.flags = 0x0;
398 sdrc_block_contents.block_size = 0x0;
399
400 arm_context_addr = virt_to_phys(omap3_arm_context);
401
402 /* Copy all the contents to the scratchpad location */
403 scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD);
404 memcpy_toio(scratchpad_address, &scratchpad_contents,
405 sizeof(scratchpad_contents));
406 /* Scratchpad contents being 32 bits, a divide by 4 done here */
407 memcpy_toio(scratchpad_address +
408 scratchpad_contents.prcm_block_offset,
409 &prcm_block_contents, sizeof(prcm_block_contents));
410 memcpy_toio(scratchpad_address +
411 scratchpad_contents.sdrc_block_offset,
412 &sdrc_block_contents, sizeof(sdrc_block_contents));
413 /*
414 * Copies the address of the location in SDRAM where ARM
415 * registers get saved during a MPU OFF transition.
416 */
417 memcpy_toio(scratchpad_address +
418 scratchpad_contents.sdrc_block_offset +
419 sizeof(sdrc_block_contents), &arm_context_addr, 4);
420}
421
422void omap3_control_save_context(void)
423{
424 control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG);
425 control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
426 control_context.mem_dftrw0 =
427 omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0);
428 control_context.mem_dftrw1 =
429 omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1);
430 control_context.msuspendmux_0 =
431 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0);
432 control_context.msuspendmux_1 =
433 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1);
434 control_context.msuspendmux_2 =
435 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2);
436 control_context.msuspendmux_3 =
437 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3);
438 control_context.msuspendmux_4 =
439 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4);
440 control_context.msuspendmux_5 =
441 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5);
442 control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL);
443 control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
444 control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE);
445 control_context.iva2_bootaddr =
446 omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR);
447 control_context.iva2_bootmod =
448 omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD);
449 control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0));
450 control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1));
451 control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2));
452 control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3));
453 control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4));
454 control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5));
455 control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6));
456 control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7));
457 control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8));
458 control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0);
459 control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
460 control_context.dss_dpll_spreading =
461 omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING);
462 control_context.core_dpll_spreading =
463 omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING);
464 control_context.per_dpll_spreading =
465 omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING);
466 control_context.usbhost_dpll_spreading =
467 omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
468 control_context.pbias_lite =
469 omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
470 control_context.temp_sensor =
471 omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR);
472 control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4);
473 control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5);
474 control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI);
475 control_context.padconf_sys_nirq =
476 omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ);
477 return;
478}
479
480void omap3_control_restore_context(void)
481{
482 omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG);
483 omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0);
484 omap_ctrl_writel(control_context.mem_dftrw0,
485 OMAP343X_CONTROL_MEM_DFTRW0);
486 omap_ctrl_writel(control_context.mem_dftrw1,
487 OMAP343X_CONTROL_MEM_DFTRW1);
488 omap_ctrl_writel(control_context.msuspendmux_0,
489 OMAP2_CONTROL_MSUSPENDMUX_0);
490 omap_ctrl_writel(control_context.msuspendmux_1,
491 OMAP2_CONTROL_MSUSPENDMUX_1);
492 omap_ctrl_writel(control_context.msuspendmux_2,
493 OMAP2_CONTROL_MSUSPENDMUX_2);
494 omap_ctrl_writel(control_context.msuspendmux_3,
495 OMAP2_CONTROL_MSUSPENDMUX_3);
496 omap_ctrl_writel(control_context.msuspendmux_4,
497 OMAP2_CONTROL_MSUSPENDMUX_4);
498 omap_ctrl_writel(control_context.msuspendmux_5,
499 OMAP2_CONTROL_MSUSPENDMUX_5);
500 omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL);
501 omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1);
502 omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE);
503 omap_ctrl_writel(control_context.iva2_bootaddr,
504 OMAP343X_CONTROL_IVA2_BOOTADDR);
505 omap_ctrl_writel(control_context.iva2_bootmod,
506 OMAP343X_CONTROL_IVA2_BOOTMOD);
507 omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0));
508 omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1));
509 omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2));
510 omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3));
511 omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4));
512 omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5));
513 omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6));
514 omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7));
515 omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8));
516 omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0);
517 omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1);
518 omap_ctrl_writel(control_context.dss_dpll_spreading,
519 OMAP343X_CONTROL_DSS_DPLL_SPREADING);
520 omap_ctrl_writel(control_context.core_dpll_spreading,
521 OMAP343X_CONTROL_CORE_DPLL_SPREADING);
522 omap_ctrl_writel(control_context.per_dpll_spreading,
523 OMAP343X_CONTROL_PER_DPLL_SPREADING);
524 omap_ctrl_writel(control_context.usbhost_dpll_spreading,
525 OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
526 omap_ctrl_writel(control_context.pbias_lite,
527 OMAP343X_CONTROL_PBIAS_LITE);
528 omap_ctrl_writel(control_context.temp_sensor,
529 OMAP343X_CONTROL_TEMP_SENSOR);
530 omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4);
531 omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5);
532 omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI);
533 omap_ctrl_writel(control_context.padconf_sys_nirq,
534 OMAP343X_CONTROL_PADCONF_SYSNIRQ);
535 return;
536}
537
538void omap3630_ctrl_disable_rta(void)
539{
540 if (!cpu_is_omap3630())
541 return;
542 omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL);
543}
544
545/**
546 * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM
547 *
548 * Tell the SCM to start saving the padconf registers, then wait for
549 * the process to complete. Returns 0 unconditionally, although it
550 * should also eventually be able to return -ETIMEDOUT, if the save
551 * does not complete.
552 *
553 * XXX This function is missing a timeout. What should it be?
554 */
555int omap3_ctrl_save_padconf(void)
556{
557 u32 cpo;
558
559 /* Save the padconf registers */
560 cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
561 cpo |= START_PADCONF_SAVE;
562 omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF);
563
564 /* wait for the save to complete */
565 while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
566 & PADCONF_SAVE_DONE))
567 udelay(1);
568
569 return 0;
570}
571
572/**
573 * omap3_ctrl_set_iva_bootmode_idle - sets the IVA2 bootmode to idle
574 *
575 * Sets the bootmode for IVA2 to idle. This is needed by the PM code to
576 * force disable IVA2 so that it does not prevent any low-power states.
577 */
578void omap3_ctrl_set_iva_bootmode_idle(void)
579{
580 omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
581 OMAP343X_CONTROL_IVA2_BOOTMOD);
582}
583#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
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
33static void __iomem *omap2_ctrl_base;
34static void __iomem *omap4_ctrl_pad_base;
35
36#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
37struct 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
46struct 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
63struct 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
95void *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 */
103u32 omap3_arm_context[128];
104
105struct 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
144static 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
150void __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
165void __iomem *omap_ctrl_base_get(void)
166{
167 return omap2_ctrl_base;
168}
169
170u8 omap_ctrl_readb(u16 offset)
171{
172 return __raw_readb(OMAP_CTRL_REGADDR(offset));
173}
174
175u16 omap_ctrl_readw(u16 offset)
176{
177 return __raw_readw(OMAP_CTRL_REGADDR(offset));
178}
179
180u32 omap_ctrl_readl(u16 offset)
181{
182 return __raw_readl(OMAP_CTRL_REGADDR(offset));
183}
184
185void omap_ctrl_writeb(u8 val, u16 offset)
186{
187 __raw_writeb(val, OMAP_CTRL_REGADDR(offset));
188}
189
190void omap_ctrl_writew(u16 val, u16 offset)
191{
192 __raw_writew(val, OMAP_CTRL_REGADDR(offset));
193}
194
195void 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
207u32 omap4_ctrl_pad_readl(u16 offset)
208{
209 return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset));
210}
211
212void 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 */
228void 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 */
253void 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 */
270void 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(omap3_restore_3630);
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(omap3_restore);
294 else
295 scratchpad_contents.public_restore_ptr =
296 virt_to_phys(omap3_restore_es3);
297
298 if (omap_type() == OMAP2_DEVICE_TYPE_GP)
299 scratchpad_contents.secure_ram_restore_ptr = 0x0;
300 else
301 scratchpad_contents.secure_ram_restore_ptr =
302 (u32) __pa(omap3_secure_ram_storage);
303 scratchpad_contents.sdrc_module_semaphore = 0x0;
304 scratchpad_contents.prcm_block_offset = 0x2C;
305 scratchpad_contents.sdrc_block_offset = 0x64;
306
307 /* Populate the PRCM block contents */
308 prcm_block_contents.prm_clksrc_ctrl =
309 omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
310 OMAP3_PRM_CLKSRC_CTRL_OFFSET);
311 prcm_block_contents.prm_clksel =
312 omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
313 OMAP3_PRM_CLKSEL_OFFSET);
314 prcm_block_contents.cm_clksel_core =
315 omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL);
316 prcm_block_contents.cm_clksel_wkup =
317 omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
318 prcm_block_contents.cm_clken_pll =
319 omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN);
320 /*
321 * As per erratum i671, ROM code does not respect the PER DPLL
322 * programming scheme if CM_AUTOIDLE_PLL..AUTO_PERIPH_DPLL == 1.
323 * Then, in anycase, clear these bits to avoid extra latencies.
324 */
325 prcm_block_contents.cm_autoidle_pll =
326 omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) &
327 ~OMAP3430_AUTO_PERIPH_DPLL_MASK;
328 prcm_block_contents.cm_clksel1_pll =
329 omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL);
330 prcm_block_contents.cm_clksel2_pll =
331 omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL);
332 prcm_block_contents.cm_clksel3_pll =
333 omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3);
334 prcm_block_contents.cm_clken_pll_mpu =
335 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL);
336 prcm_block_contents.cm_autoidle_pll_mpu =
337 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL);
338 prcm_block_contents.cm_clksel1_pll_mpu =
339 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL);
340 prcm_block_contents.cm_clksel2_pll_mpu =
341 omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL);
342 prcm_block_contents.prcm_block_size = 0x0;
343
344 /* Populate the SDRC block contents */
345 sdrc_block_contents.sysconfig =
346 (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF);
347 sdrc_block_contents.cs_cfg =
348 (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF);
349 sdrc_block_contents.sharing =
350 (sdrc_read_reg(SDRC_SHARING) & 0xFFFF);
351 sdrc_block_contents.err_type =
352 (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF);
353 sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL);
354 sdrc_block_contents.dll_b_ctrl = 0x0;
355 /*
356 * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should
357 * be programed to issue automatic self refresh on timeout
358 * of AUTO_CNT = 1 prior to any transition to OFF mode.
359 */
360 if ((omap_type() != OMAP2_DEVICE_TYPE_GP)
361 && (omap_rev() >= OMAP3430_REV_ES3_0))
362 sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) &
363 ~(SDRC_POWER_AUTOCOUNT_MASK|
364 SDRC_POWER_CLKCTRL_MASK)) |
365 (1 << SDRC_POWER_AUTOCOUNT_SHIFT) |
366 SDRC_SELF_REFRESH_ON_AUTOCOUNT;
367 else
368 sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER);
369
370 sdrc_block_contents.cs_0 = 0x0;
371 sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0);
372 sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF);
373 sdrc_block_contents.emr_1_0 = 0x0;
374 sdrc_block_contents.emr_2_0 = 0x0;
375 sdrc_block_contents.emr_3_0 = 0x0;
376 sdrc_block_contents.actim_ctrla_0 =
377 sdrc_read_reg(SDRC_ACTIM_CTRL_A_0);
378 sdrc_block_contents.actim_ctrlb_0 =
379 sdrc_read_reg(SDRC_ACTIM_CTRL_B_0);
380 sdrc_block_contents.rfr_ctrl_0 =
381 sdrc_read_reg(SDRC_RFR_CTRL_0);
382 sdrc_block_contents.cs_1 = 0x0;
383 sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1);
384 sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF;
385 sdrc_block_contents.emr_1_1 = 0x0;
386 sdrc_block_contents.emr_2_1 = 0x0;
387 sdrc_block_contents.emr_3_1 = 0x0;
388 sdrc_block_contents.actim_ctrla_1 =
389 sdrc_read_reg(SDRC_ACTIM_CTRL_A_1);
390 sdrc_block_contents.actim_ctrlb_1 =
391 sdrc_read_reg(SDRC_ACTIM_CTRL_B_1);
392 sdrc_block_contents.rfr_ctrl_1 =
393 sdrc_read_reg(SDRC_RFR_CTRL_1);
394 sdrc_block_contents.dcdl_1_ctrl = 0x0;
395 sdrc_block_contents.dcdl_2_ctrl = 0x0;
396 sdrc_block_contents.flags = 0x0;
397 sdrc_block_contents.block_size = 0x0;
398
399 arm_context_addr = virt_to_phys(omap3_arm_context);
400
401 /* Copy all the contents to the scratchpad location */
402 scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD);
403 memcpy_toio(scratchpad_address, &scratchpad_contents,
404 sizeof(scratchpad_contents));
405 /* Scratchpad contents being 32 bits, a divide by 4 done here */
406 memcpy_toio(scratchpad_address +
407 scratchpad_contents.prcm_block_offset,
408 &prcm_block_contents, sizeof(prcm_block_contents));
409 memcpy_toio(scratchpad_address +
410 scratchpad_contents.sdrc_block_offset,
411 &sdrc_block_contents, sizeof(sdrc_block_contents));
412 /*
413 * Copies the address of the location in SDRAM where ARM
414 * registers get saved during a MPU OFF transition.
415 */
416 memcpy_toio(scratchpad_address +
417 scratchpad_contents.sdrc_block_offset +
418 sizeof(sdrc_block_contents), &arm_context_addr, 4);
419}
420
421void omap3_control_save_context(void)
422{
423 control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG);
424 control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
425 control_context.mem_dftrw0 =
426 omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0);
427 control_context.mem_dftrw1 =
428 omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1);
429 control_context.msuspendmux_0 =
430 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0);
431 control_context.msuspendmux_1 =
432 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1);
433 control_context.msuspendmux_2 =
434 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2);
435 control_context.msuspendmux_3 =
436 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3);
437 control_context.msuspendmux_4 =
438 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4);
439 control_context.msuspendmux_5 =
440 omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5);
441 control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL);
442 control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
443 control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE);
444 control_context.iva2_bootaddr =
445 omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR);
446 control_context.iva2_bootmod =
447 omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD);
448 control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0));
449 control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1));
450 control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2));
451 control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3));
452 control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4));
453 control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5));
454 control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6));
455 control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7));
456 control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8));
457 control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0);
458 control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
459 control_context.dss_dpll_spreading =
460 omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING);
461 control_context.core_dpll_spreading =
462 omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING);
463 control_context.per_dpll_spreading =
464 omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING);
465 control_context.usbhost_dpll_spreading =
466 omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
467 control_context.pbias_lite =
468 omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
469 control_context.temp_sensor =
470 omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR);
471 control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4);
472 control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5);
473 control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI);
474 control_context.padconf_sys_nirq =
475 omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ);
476 return;
477}
478
479void omap3_control_restore_context(void)
480{
481 omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG);
482 omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0);
483 omap_ctrl_writel(control_context.mem_dftrw0,
484 OMAP343X_CONTROL_MEM_DFTRW0);
485 omap_ctrl_writel(control_context.mem_dftrw1,
486 OMAP343X_CONTROL_MEM_DFTRW1);
487 omap_ctrl_writel(control_context.msuspendmux_0,
488 OMAP2_CONTROL_MSUSPENDMUX_0);
489 omap_ctrl_writel(control_context.msuspendmux_1,
490 OMAP2_CONTROL_MSUSPENDMUX_1);
491 omap_ctrl_writel(control_context.msuspendmux_2,
492 OMAP2_CONTROL_MSUSPENDMUX_2);
493 omap_ctrl_writel(control_context.msuspendmux_3,
494 OMAP2_CONTROL_MSUSPENDMUX_3);
495 omap_ctrl_writel(control_context.msuspendmux_4,
496 OMAP2_CONTROL_MSUSPENDMUX_4);
497 omap_ctrl_writel(control_context.msuspendmux_5,
498 OMAP2_CONTROL_MSUSPENDMUX_5);
499 omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL);
500 omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1);
501 omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE);
502 omap_ctrl_writel(control_context.iva2_bootaddr,
503 OMAP343X_CONTROL_IVA2_BOOTADDR);
504 omap_ctrl_writel(control_context.iva2_bootmod,
505 OMAP343X_CONTROL_IVA2_BOOTMOD);
506 omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0));
507 omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1));
508 omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2));
509 omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3));
510 omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4));
511 omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5));
512 omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6));
513 omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7));
514 omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8));
515 omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0);
516 omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1);
517 omap_ctrl_writel(control_context.dss_dpll_spreading,
518 OMAP343X_CONTROL_DSS_DPLL_SPREADING);
519 omap_ctrl_writel(control_context.core_dpll_spreading,
520 OMAP343X_CONTROL_CORE_DPLL_SPREADING);
521 omap_ctrl_writel(control_context.per_dpll_spreading,
522 OMAP343X_CONTROL_PER_DPLL_SPREADING);
523 omap_ctrl_writel(control_context.usbhost_dpll_spreading,
524 OMAP343X_CONTROL_USBHOST_DPLL_SPREADING);
525 omap_ctrl_writel(control_context.pbias_lite,
526 OMAP343X_CONTROL_PBIAS_LITE);
527 omap_ctrl_writel(control_context.temp_sensor,
528 OMAP343X_CONTROL_TEMP_SENSOR);
529 omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4);
530 omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5);
531 omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI);
532 omap_ctrl_writel(control_context.padconf_sys_nirq,
533 OMAP343X_CONTROL_PADCONF_SYSNIRQ);
534 return;
535}
536
537void omap3630_ctrl_disable_rta(void)
538{
539 if (!cpu_is_omap3630())
540 return;
541 omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL);
542}
543
544/**
545 * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM
546 *
547 * Tell the SCM to start saving the padconf registers, then wait for
548 * the process to complete. Returns 0 unconditionally, although it
549 * should also eventually be able to return -ETIMEDOUT, if the save
550 * does not complete.
551 *
552 * XXX This function is missing a timeout. What should it be?
553 */
554int omap3_ctrl_save_padconf(void)
555{
556 u32 cpo;
557
558 /* Save the padconf registers */
559 cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
560 cpo |= START_PADCONF_SAVE;
561 omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF);
562
563 /* wait for the save to complete */
564 while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
565 & PADCONF_SAVE_DONE))
566 udelay(1);
567
568 return 0;
569}
570
571#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */