Commit | Line | Data |
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69d88a00 PW |
1 | /* |
2 | * OMAP2/3 System Control Module register access | |
3 | * | |
3e6ece13 | 4 | * Copyright (C) 2007, 2012 Texas Instruments, Inc. |
69d88a00 PW |
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> | |
a58caad1 | 16 | #include <linux/io.h> |
fe87414f | 17 | #include <linux/of_address.h> |
e5b63574 TK |
18 | #include <linux/regmap.h> |
19 | #include <linux/mfd/syscon.h> | |
69d88a00 | 20 | |
dbc04161 | 21 | #include "soc.h" |
ee0839c2 TL |
22 | #include "iomap.h" |
23 | #include "common.h" | |
80140786 RN |
24 | #include "cm-regbits-34xx.h" |
25 | #include "prm-regbits-34xx.h" | |
139563ad | 26 | #include "prm3xxx.h" |
ff4ae5d9 | 27 | #include "cm3xxx.h" |
80140786 | 28 | #include "sdrc.h" |
38815733 | 29 | #include "pm.h" |
4814ced5 | 30 | #include "control.h" |
fe87414f | 31 | #include "clock.h" |
69d88a00 | 32 | |
596efe47 PW |
33 | /* Used by omap3_ctrl_save_padconf() */ |
34 | #define START_PADCONF_SAVE 0x2 | |
35 | #define PADCONF_SAVE_DONE 0x1 | |
36 | ||
a58caad1 | 37 | static void __iomem *omap2_ctrl_base; |
e5b63574 | 38 | static s16 omap2_ctrl_offset; |
e5b63574 | 39 | static struct regmap *omap2_ctrl_syscon; |
69d88a00 | 40 | |
c96631e1 | 41 | #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) |
80140786 RN |
42 | struct omap3_scratchpad { |
43 | u32 boot_config_ptr; | |
44 | u32 public_restore_ptr; | |
45 | u32 secure_ram_restore_ptr; | |
46 | u32 sdrc_module_semaphore; | |
47 | u32 prcm_block_offset; | |
48 | u32 sdrc_block_offset; | |
49 | }; | |
50 | ||
51 | struct omap3_scratchpad_prcm_block { | |
7e28b465 | 52 | u32 prm_contents[2]; |
c6a2d839 | 53 | u32 cm_contents[11]; |
80140786 RN |
54 | u32 prcm_block_size; |
55 | }; | |
56 | ||
57 | struct omap3_scratchpad_sdrc_block { | |
58 | u16 sysconfig; | |
59 | u16 cs_cfg; | |
60 | u16 sharing; | |
61 | u16 err_type; | |
62 | u32 dll_a_ctrl; | |
63 | u32 dll_b_ctrl; | |
64 | u32 power; | |
65 | u32 cs_0; | |
66 | u32 mcfg_0; | |
67 | u16 mr_0; | |
68 | u16 emr_1_0; | |
69 | u16 emr_2_0; | |
70 | u16 emr_3_0; | |
71 | u32 actim_ctrla_0; | |
72 | u32 actim_ctrlb_0; | |
73 | u32 rfr_ctrl_0; | |
74 | u32 cs_1; | |
75 | u32 mcfg_1; | |
76 | u16 mr_1; | |
77 | u16 emr_1_1; | |
78 | u16 emr_2_1; | |
79 | u16 emr_3_1; | |
80 | u32 actim_ctrla_1; | |
81 | u32 actim_ctrlb_1; | |
82 | u32 rfr_ctrl_1; | |
83 | u16 dcdl_1_ctrl; | |
84 | u16 dcdl_2_ctrl; | |
85 | u32 flags; | |
86 | u32 block_size; | |
87 | }; | |
88 | ||
27d59a4a TK |
89 | void *omap3_secure_ram_storage; |
90 | ||
80140786 RN |
91 | /* |
92 | * This is used to store ARM registers in SDRAM before attempting | |
93 | * an MPU OFF. The save and restore happens from the SRAM sleep code. | |
94 | * The address is stored in scratchpad, so that it can be used | |
95 | * during the restore path. | |
96 | */ | |
97 | u32 omap3_arm_context[128]; | |
98 | ||
c96631e1 RN |
99 | struct omap3_control_regs { |
100 | u32 sysconfig; | |
101 | u32 devconf0; | |
102 | u32 mem_dftrw0; | |
103 | u32 mem_dftrw1; | |
104 | u32 msuspendmux_0; | |
105 | u32 msuspendmux_1; | |
106 | u32 msuspendmux_2; | |
107 | u32 msuspendmux_3; | |
108 | u32 msuspendmux_4; | |
109 | u32 msuspendmux_5; | |
110 | u32 sec_ctrl; | |
111 | u32 devconf1; | |
112 | u32 csirxfe; | |
113 | u32 iva2_bootaddr; | |
114 | u32 iva2_bootmod; | |
115 | u32 debobs_0; | |
116 | u32 debobs_1; | |
117 | u32 debobs_2; | |
118 | u32 debobs_3; | |
119 | u32 debobs_4; | |
120 | u32 debobs_5; | |
121 | u32 debobs_6; | |
122 | u32 debobs_7; | |
123 | u32 debobs_8; | |
124 | u32 prog_io0; | |
125 | u32 prog_io1; | |
126 | u32 dss_dpll_spreading; | |
127 | u32 core_dpll_spreading; | |
128 | u32 per_dpll_spreading; | |
129 | u32 usbhost_dpll_spreading; | |
130 | u32 pbias_lite; | |
131 | u32 temp_sensor; | |
132 | u32 sramldo4; | |
133 | u32 sramldo5; | |
134 | u32 csi; | |
f5f9d132 | 135 | u32 padconf_sys_nirq; |
c96631e1 RN |
136 | }; |
137 | ||
138 | static struct omap3_control_regs control_context; | |
139 | #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ | |
140 | ||
efde2346 | 141 | void __init omap2_set_globals_control(void __iomem *ctrl) |
69d88a00 | 142 | { |
b6a4226c | 143 | omap2_ctrl_base = ctrl; |
69d88a00 PW |
144 | } |
145 | ||
69d88a00 PW |
146 | u8 omap_ctrl_readb(u16 offset) |
147 | { | |
e5b63574 TK |
148 | u32 val; |
149 | u8 byte_offset = offset & 0x3; | |
150 | ||
151 | val = omap_ctrl_readl(offset); | |
152 | ||
153 | return (val >> (byte_offset * 8)) & 0xff; | |
69d88a00 PW |
154 | } |
155 | ||
156 | u16 omap_ctrl_readw(u16 offset) | |
157 | { | |
e5b63574 TK |
158 | u32 val; |
159 | u16 byte_offset = offset & 0x2; | |
160 | ||
161 | val = omap_ctrl_readl(offset); | |
162 | ||
163 | return (val >> (byte_offset * 8)) & 0xffff; | |
69d88a00 PW |
164 | } |
165 | ||
166 | u32 omap_ctrl_readl(u16 offset) | |
167 | { | |
e5b63574 TK |
168 | u32 val; |
169 | ||
170 | offset &= 0xfffc; | |
171 | if (!omap2_ctrl_syscon) | |
172 | val = readl_relaxed(omap2_ctrl_base + offset); | |
173 | else | |
174 | regmap_read(omap2_ctrl_syscon, omap2_ctrl_offset + offset, | |
175 | &val); | |
176 | ||
177 | return val; | |
69d88a00 PW |
178 | } |
179 | ||
180 | void omap_ctrl_writeb(u8 val, u16 offset) | |
181 | { | |
e5b63574 TK |
182 | u32 tmp; |
183 | u8 byte_offset = offset & 0x3; | |
184 | ||
185 | tmp = omap_ctrl_readl(offset); | |
186 | ||
187 | tmp &= 0xffffffff ^ (0xff << (byte_offset * 8)); | |
188 | tmp |= val << (byte_offset * 8); | |
189 | ||
190 | omap_ctrl_writel(tmp, offset); | |
69d88a00 PW |
191 | } |
192 | ||
193 | void omap_ctrl_writew(u16 val, u16 offset) | |
194 | { | |
e5b63574 TK |
195 | u32 tmp; |
196 | u8 byte_offset = offset & 0x2; | |
197 | ||
198 | tmp = omap_ctrl_readl(offset); | |
199 | ||
200 | tmp &= 0xffffffff ^ (0xffff << (byte_offset * 8)); | |
201 | tmp |= val << (byte_offset * 8); | |
202 | ||
203 | omap_ctrl_writel(tmp, offset); | |
69d88a00 PW |
204 | } |
205 | ||
206 | void omap_ctrl_writel(u32 val, u16 offset) | |
207 | { | |
e5b63574 TK |
208 | offset &= 0xfffc; |
209 | if (!omap2_ctrl_syscon) | |
210 | writel_relaxed(val, omap2_ctrl_base + offset); | |
211 | else | |
212 | regmap_write(omap2_ctrl_syscon, omap2_ctrl_offset + offset, | |
213 | val); | |
69d88a00 PW |
214 | } |
215 | ||
166353bd PW |
216 | #ifdef CONFIG_ARCH_OMAP3 |
217 | ||
218 | /** | |
219 | * omap3_ctrl_write_boot_mode - set scratchpad boot mode for the next boot | |
220 | * @bootmode: 8-bit value to pass to some boot code | |
221 | * | |
222 | * Set the bootmode in the scratchpad RAM. This is used after the | |
223 | * system restarts. Not sure what actually uses this - it may be the | |
224 | * bootloader, rather than the boot ROM - contrary to the preserved | |
225 | * comment below. No return value. | |
226 | */ | |
227 | void omap3_ctrl_write_boot_mode(u8 bootmode) | |
228 | { | |
229 | u32 l; | |
230 | ||
231 | l = ('B' << 24) | ('M' << 16) | bootmode; | |
232 | ||
233 | /* | |
234 | * Reserve the first word in scratchpad for communicating | |
235 | * with the boot ROM. A pointer to a data structure | |
236 | * describing the boot process can be stored there, | |
237 | * cf. OMAP34xx TRM, Initialization / Software Booting | |
238 | * Configuration. | |
239 | * | |
240 | * XXX This should use some omap_ctrl_writel()-type function | |
241 | */ | |
edfaf05c | 242 | writel_relaxed(l, OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD + 4)); |
166353bd PW |
243 | } |
244 | ||
245 | #endif | |
246 | ||
90f1380e ORL |
247 | /** |
248 | * omap_ctrl_write_dsp_boot_addr - set boot address for a remote processor | |
249 | * @bootaddr: physical address of the boot loader | |
250 | * | |
251 | * Set boot address for the boot loader of a supported processor | |
252 | * when a power ON sequence occurs. | |
253 | */ | |
254 | void omap_ctrl_write_dsp_boot_addr(u32 bootaddr) | |
255 | { | |
256 | u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTADDR : | |
257 | cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTADDR : | |
258 | cpu_is_omap44xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR : | |
668468b1 | 259 | soc_is_omap54xx() ? OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR : |
90f1380e ORL |
260 | 0; |
261 | ||
262 | if (!offset) { | |
263 | pr_err("%s: unsupported omap type\n", __func__); | |
264 | return; | |
265 | } | |
266 | ||
267 | omap_ctrl_writel(bootaddr, offset); | |
268 | } | |
269 | ||
270 | /** | |
271 | * omap_ctrl_write_dsp_boot_mode - set boot mode for a remote processor | |
272 | * @bootmode: 8-bit value to pass to some boot code | |
273 | * | |
274 | * Sets boot mode for the boot loader of a supported processor | |
275 | * when a power ON sequence occurs. | |
276 | */ | |
277 | void omap_ctrl_write_dsp_boot_mode(u8 bootmode) | |
278 | { | |
279 | u32 offset = cpu_is_omap243x() ? OMAP243X_CONTROL_IVA2_BOOTMOD : | |
280 | cpu_is_omap34xx() ? OMAP343X_CONTROL_IVA2_BOOTMOD : | |
281 | 0; | |
282 | ||
283 | if (!offset) { | |
284 | pr_err("%s: unsupported omap type\n", __func__); | |
285 | return; | |
286 | } | |
287 | ||
288 | omap_ctrl_writel(bootmode, offset); | |
289 | } | |
290 | ||
c96631e1 | 291 | #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) |
80140786 RN |
292 | /* |
293 | * Clears the scratchpad contents in case of cold boot- | |
294 | * called during bootup | |
295 | */ | |
296 | void omap3_clear_scratchpad_contents(void) | |
297 | { | |
298 | u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET; | |
4d63bc1d | 299 | void __iomem *v_addr; |
80140786 | 300 | u32 offset = 0; |
ae21e618 | 301 | |
80140786 | 302 | v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM); |
9efcea09 | 303 | if (omap3xxx_prm_clear_global_cold_reset()) { |
80140786 | 304 | for ( ; offset <= max_offset; offset += 0x4) |
edfaf05c | 305 | writel_relaxed(0x0, (v_addr + offset)); |
80140786 RN |
306 | } |
307 | } | |
308 | ||
309 | /* Populate the scratchpad structure with restore structure */ | |
310 | void omap3_save_scratchpad_contents(void) | |
311 | { | |
4d63bc1d | 312 | void __iomem *scratchpad_address; |
80140786 RN |
313 | u32 arm_context_addr; |
314 | struct omap3_scratchpad scratchpad_contents; | |
315 | struct omap3_scratchpad_prcm_block prcm_block_contents; | |
316 | struct omap3_scratchpad_sdrc_block sdrc_block_contents; | |
317 | ||
f7dfe3d8 JP |
318 | /* |
319 | * Populate the Scratchpad contents | |
320 | * | |
321 | * The "get_*restore_pointer" functions are used to provide a | |
322 | * physical restore address where the ROM code jumps while waking | |
323 | * up from MPU OFF/OSWR state. | |
324 | * The restore pointer is stored into the scratchpad. | |
325 | */ | |
80140786 | 326 | scratchpad_contents.boot_config_ptr = 0x0; |
458e999e NM |
327 | if (cpu_is_omap3630()) |
328 | scratchpad_contents.public_restore_ptr = | |
14c79bbe | 329 | virt_to_phys(omap3_restore_3630); |
458e999e | 330 | else if (omap_rev() != OMAP3430_REV_ES3_0 && |
9b5f7428 JV |
331 | omap_rev() != OMAP3430_REV_ES3_1 && |
332 | omap_rev() != OMAP3430_REV_ES3_1_2) | |
0795a75a | 333 | scratchpad_contents.public_restore_ptr = |
14c79bbe | 334 | virt_to_phys(omap3_restore); |
0795a75a TK |
335 | else |
336 | scratchpad_contents.public_restore_ptr = | |
14c79bbe KH |
337 | virt_to_phys(omap3_restore_es3); |
338 | ||
27d59a4a TK |
339 | if (omap_type() == OMAP2_DEVICE_TYPE_GP) |
340 | scratchpad_contents.secure_ram_restore_ptr = 0x0; | |
341 | else | |
342 | scratchpad_contents.secure_ram_restore_ptr = | |
343 | (u32) __pa(omap3_secure_ram_storage); | |
80140786 RN |
344 | scratchpad_contents.sdrc_module_semaphore = 0x0; |
345 | scratchpad_contents.prcm_block_offset = 0x2C; | |
346 | scratchpad_contents.sdrc_block_offset = 0x64; | |
347 | ||
348 | /* Populate the PRCM block contents */ | |
7e28b465 | 349 | omap3_prm_save_scratchpad_contents(prcm_block_contents.prm_contents); |
c6a2d839 TK |
350 | omap3_cm_save_scratchpad_contents(prcm_block_contents.cm_contents); |
351 | ||
80140786 RN |
352 | prcm_block_contents.prcm_block_size = 0x0; |
353 | ||
354 | /* Populate the SDRC block contents */ | |
355 | sdrc_block_contents.sysconfig = | |
356 | (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF); | |
357 | sdrc_block_contents.cs_cfg = | |
358 | (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF); | |
359 | sdrc_block_contents.sharing = | |
360 | (sdrc_read_reg(SDRC_SHARING) & 0xFFFF); | |
361 | sdrc_block_contents.err_type = | |
362 | (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF); | |
363 | sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL); | |
364 | sdrc_block_contents.dll_b_ctrl = 0x0; | |
f265dc4c RN |
365 | /* |
366 | * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should | |
367 | * be programed to issue automatic self refresh on timeout | |
368 | * of AUTO_CNT = 1 prior to any transition to OFF mode. | |
369 | */ | |
370 | if ((omap_type() != OMAP2_DEVICE_TYPE_GP) | |
371 | && (omap_rev() >= OMAP3430_REV_ES3_0)) | |
372 | sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) & | |
373 | ~(SDRC_POWER_AUTOCOUNT_MASK| | |
374 | SDRC_POWER_CLKCTRL_MASK)) | | |
375 | (1 << SDRC_POWER_AUTOCOUNT_SHIFT) | | |
376 | SDRC_SELF_REFRESH_ON_AUTOCOUNT; | |
377 | else | |
378 | sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER); | |
379 | ||
80140786 RN |
380 | sdrc_block_contents.cs_0 = 0x0; |
381 | sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0); | |
382 | sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF); | |
383 | sdrc_block_contents.emr_1_0 = 0x0; | |
384 | sdrc_block_contents.emr_2_0 = 0x0; | |
385 | sdrc_block_contents.emr_3_0 = 0x0; | |
386 | sdrc_block_contents.actim_ctrla_0 = | |
387 | sdrc_read_reg(SDRC_ACTIM_CTRL_A_0); | |
388 | sdrc_block_contents.actim_ctrlb_0 = | |
389 | sdrc_read_reg(SDRC_ACTIM_CTRL_B_0); | |
390 | sdrc_block_contents.rfr_ctrl_0 = | |
391 | sdrc_read_reg(SDRC_RFR_CTRL_0); | |
392 | sdrc_block_contents.cs_1 = 0x0; | |
393 | sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1); | |
394 | sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF; | |
395 | sdrc_block_contents.emr_1_1 = 0x0; | |
396 | sdrc_block_contents.emr_2_1 = 0x0; | |
397 | sdrc_block_contents.emr_3_1 = 0x0; | |
398 | sdrc_block_contents.actim_ctrla_1 = | |
399 | sdrc_read_reg(SDRC_ACTIM_CTRL_A_1); | |
400 | sdrc_block_contents.actim_ctrlb_1 = | |
401 | sdrc_read_reg(SDRC_ACTIM_CTRL_B_1); | |
402 | sdrc_block_contents.rfr_ctrl_1 = | |
403 | sdrc_read_reg(SDRC_RFR_CTRL_1); | |
404 | sdrc_block_contents.dcdl_1_ctrl = 0x0; | |
405 | sdrc_block_contents.dcdl_2_ctrl = 0x0; | |
406 | sdrc_block_contents.flags = 0x0; | |
407 | sdrc_block_contents.block_size = 0x0; | |
408 | ||
409 | arm_context_addr = virt_to_phys(omap3_arm_context); | |
410 | ||
411 | /* Copy all the contents to the scratchpad location */ | |
412 | scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD); | |
413 | memcpy_toio(scratchpad_address, &scratchpad_contents, | |
414 | sizeof(scratchpad_contents)); | |
415 | /* Scratchpad contents being 32 bits, a divide by 4 done here */ | |
416 | memcpy_toio(scratchpad_address + | |
417 | scratchpad_contents.prcm_block_offset, | |
418 | &prcm_block_contents, sizeof(prcm_block_contents)); | |
419 | memcpy_toio(scratchpad_address + | |
420 | scratchpad_contents.sdrc_block_offset, | |
421 | &sdrc_block_contents, sizeof(sdrc_block_contents)); | |
422 | /* | |
423 | * Copies the address of the location in SDRAM where ARM | |
424 | * registers get saved during a MPU OFF transition. | |
425 | */ | |
426 | memcpy_toio(scratchpad_address + | |
427 | scratchpad_contents.sdrc_block_offset + | |
428 | sizeof(sdrc_block_contents), &arm_context_addr, 4); | |
429 | } | |
430 | ||
c96631e1 RN |
431 | void omap3_control_save_context(void) |
432 | { | |
433 | control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG); | |
434 | control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); | |
435 | control_context.mem_dftrw0 = | |
436 | omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0); | |
437 | control_context.mem_dftrw1 = | |
438 | omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1); | |
439 | control_context.msuspendmux_0 = | |
440 | omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0); | |
441 | control_context.msuspendmux_1 = | |
442 | omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1); | |
443 | control_context.msuspendmux_2 = | |
444 | omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2); | |
445 | control_context.msuspendmux_3 = | |
446 | omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3); | |
447 | control_context.msuspendmux_4 = | |
448 | omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4); | |
449 | control_context.msuspendmux_5 = | |
450 | omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5); | |
451 | control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL); | |
452 | control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1); | |
453 | control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE); | |
454 | control_context.iva2_bootaddr = | |
455 | omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR); | |
456 | control_context.iva2_bootmod = | |
457 | omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD); | |
458 | control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0)); | |
459 | control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1)); | |
460 | control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2)); | |
461 | control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3)); | |
462 | control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4)); | |
463 | control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5)); | |
464 | control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6)); | |
465 | control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7)); | |
466 | control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8)); | |
467 | control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0); | |
468 | control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1); | |
469 | control_context.dss_dpll_spreading = | |
470 | omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING); | |
471 | control_context.core_dpll_spreading = | |
472 | omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING); | |
473 | control_context.per_dpll_spreading = | |
474 | omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING); | |
475 | control_context.usbhost_dpll_spreading = | |
476 | omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING); | |
477 | control_context.pbias_lite = | |
478 | omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE); | |
479 | control_context.temp_sensor = | |
480 | omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR); | |
481 | control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4); | |
482 | control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5); | |
483 | control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI); | |
f5f9d132 PW |
484 | control_context.padconf_sys_nirq = |
485 | omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ); | |
c96631e1 RN |
486 | } |
487 | ||
488 | void omap3_control_restore_context(void) | |
489 | { | |
490 | omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG); | |
491 | omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0); | |
492 | omap_ctrl_writel(control_context.mem_dftrw0, | |
493 | OMAP343X_CONTROL_MEM_DFTRW0); | |
494 | omap_ctrl_writel(control_context.mem_dftrw1, | |
495 | OMAP343X_CONTROL_MEM_DFTRW1); | |
496 | omap_ctrl_writel(control_context.msuspendmux_0, | |
497 | OMAP2_CONTROL_MSUSPENDMUX_0); | |
498 | omap_ctrl_writel(control_context.msuspendmux_1, | |
499 | OMAP2_CONTROL_MSUSPENDMUX_1); | |
500 | omap_ctrl_writel(control_context.msuspendmux_2, | |
501 | OMAP2_CONTROL_MSUSPENDMUX_2); | |
502 | omap_ctrl_writel(control_context.msuspendmux_3, | |
503 | OMAP2_CONTROL_MSUSPENDMUX_3); | |
504 | omap_ctrl_writel(control_context.msuspendmux_4, | |
505 | OMAP2_CONTROL_MSUSPENDMUX_4); | |
506 | omap_ctrl_writel(control_context.msuspendmux_5, | |
507 | OMAP2_CONTROL_MSUSPENDMUX_5); | |
508 | omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL); | |
509 | omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1); | |
510 | omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE); | |
511 | omap_ctrl_writel(control_context.iva2_bootaddr, | |
512 | OMAP343X_CONTROL_IVA2_BOOTADDR); | |
513 | omap_ctrl_writel(control_context.iva2_bootmod, | |
514 | OMAP343X_CONTROL_IVA2_BOOTMOD); | |
515 | omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0)); | |
516 | omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1)); | |
517 | omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2)); | |
518 | omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3)); | |
519 | omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4)); | |
520 | omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5)); | |
521 | omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6)); | |
522 | omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7)); | |
523 | omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8)); | |
524 | omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0); | |
525 | omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1); | |
526 | omap_ctrl_writel(control_context.dss_dpll_spreading, | |
527 | OMAP343X_CONTROL_DSS_DPLL_SPREADING); | |
528 | omap_ctrl_writel(control_context.core_dpll_spreading, | |
529 | OMAP343X_CONTROL_CORE_DPLL_SPREADING); | |
530 | omap_ctrl_writel(control_context.per_dpll_spreading, | |
531 | OMAP343X_CONTROL_PER_DPLL_SPREADING); | |
532 | omap_ctrl_writel(control_context.usbhost_dpll_spreading, | |
533 | OMAP343X_CONTROL_USBHOST_DPLL_SPREADING); | |
534 | omap_ctrl_writel(control_context.pbias_lite, | |
535 | OMAP343X_CONTROL_PBIAS_LITE); | |
536 | omap_ctrl_writel(control_context.temp_sensor, | |
537 | OMAP343X_CONTROL_TEMP_SENSOR); | |
538 | omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4); | |
539 | omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5); | |
540 | omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI); | |
f5f9d132 PW |
541 | omap_ctrl_writel(control_context.padconf_sys_nirq, |
542 | OMAP343X_CONTROL_PADCONF_SYSNIRQ); | |
c96631e1 | 543 | } |
458e999e NM |
544 | |
545 | void omap3630_ctrl_disable_rta(void) | |
546 | { | |
547 | if (!cpu_is_omap3630()) | |
548 | return; | |
549 | omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL); | |
550 | } | |
551 | ||
596efe47 PW |
552 | /** |
553 | * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM | |
554 | * | |
555 | * Tell the SCM to start saving the padconf registers, then wait for | |
556 | * the process to complete. Returns 0 unconditionally, although it | |
557 | * should also eventually be able to return -ETIMEDOUT, if the save | |
558 | * does not complete. | |
559 | * | |
560 | * XXX This function is missing a timeout. What should it be? | |
561 | */ | |
562 | int omap3_ctrl_save_padconf(void) | |
563 | { | |
564 | u32 cpo; | |
565 | ||
566 | /* Save the padconf registers */ | |
567 | cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF); | |
568 | cpo |= START_PADCONF_SAVE; | |
569 | omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF); | |
570 | ||
571 | /* wait for the save to complete */ | |
572 | while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS) | |
573 | & PADCONF_SAVE_DONE)) | |
574 | udelay(1); | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
49e03402 TK |
579 | /** |
580 | * omap3_ctrl_set_iva_bootmode_idle - sets the IVA2 bootmode to idle | |
581 | * | |
582 | * Sets the bootmode for IVA2 to idle. This is needed by the PM code to | |
583 | * force disable IVA2 so that it does not prevent any low-power states. | |
584 | */ | |
ba12c242 | 585 | static void __init omap3_ctrl_set_iva_bootmode_idle(void) |
49e03402 TK |
586 | { |
587 | omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE, | |
588 | OMAP343X_CONTROL_IVA2_BOOTMOD); | |
589 | } | |
bbd36f9f TK |
590 | |
591 | /** | |
592 | * omap3_ctrl_setup_d2d_padconf - setup stacked modem pads for idle | |
593 | * | |
594 | * Sets up the pads controlling the stacked modem in such way that the | |
595 | * device can enter idle. | |
596 | */ | |
ba12c242 | 597 | static void __init omap3_ctrl_setup_d2d_padconf(void) |
bbd36f9f TK |
598 | { |
599 | u16 mask, padconf; | |
600 | ||
601 | /* | |
602 | * In a stand alone OMAP3430 where there is not a stacked | |
603 | * modem for the D2D Idle Ack and D2D MStandby must be pulled | |
604 | * high. S CONTROL_PADCONF_SAD2D_IDLEACK and | |
605 | * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up. | |
606 | */ | |
607 | mask = (1 << 4) | (1 << 3); /* pull-up, enabled */ | |
608 | padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY); | |
609 | padconf |= mask; | |
610 | omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY); | |
611 | ||
612 | padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK); | |
613 | padconf |= mask; | |
614 | omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK); | |
615 | } | |
ba12c242 TK |
616 | |
617 | /** | |
618 | * omap3_ctrl_init - does static initializations for control module | |
619 | * | |
620 | * Initializes system control module. This sets up the sysconfig autoidle, | |
621 | * and sets up modem and iva2 so that they can be idled properly. | |
622 | */ | |
623 | void __init omap3_ctrl_init(void) | |
624 | { | |
625 | omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG); | |
626 | ||
627 | omap3_ctrl_set_iva_bootmode_idle(); | |
628 | ||
629 | omap3_ctrl_setup_d2d_padconf(); | |
630 | } | |
c96631e1 | 631 | #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ |
fe87414f TK |
632 | |
633 | struct control_init_data { | |
634 | int index; | |
e5b63574 | 635 | s16 offset; |
fe87414f TK |
636 | }; |
637 | ||
638 | static struct control_init_data ctrl_data = { | |
639 | .index = TI_CLKM_CTRL, | |
640 | }; | |
641 | ||
72b10ac0 TK |
642 | static const struct control_init_data omap2_ctrl_data = { |
643 | .index = TI_CLKM_CTRL, | |
644 | .offset = -OMAP2_CONTROL_GENERAL, | |
645 | }; | |
646 | ||
fe87414f | 647 | static const struct of_device_id omap_scrm_dt_match_table[] = { |
e3bc5358 | 648 | { .compatible = "ti,am3-scm", .data = &ctrl_data }, |
83a5d6c9 | 649 | { .compatible = "ti,am4-scm", .data = &ctrl_data }, |
72b10ac0 | 650 | { .compatible = "ti,omap2-scm", .data = &omap2_ctrl_data }, |
b8845074 | 651 | { .compatible = "ti,omap3-scm", .data = &omap2_ctrl_data }, |
2208bf11 | 652 | { .compatible = "ti,dm816-scrm", .data = &ctrl_data }, |
fe87414f TK |
653 | { } |
654 | }; | |
655 | ||
2208bf11 TK |
656 | /** |
657 | * omap2_control_base_init - initialize iomappings for the control driver | |
658 | * | |
659 | * Detects and initializes the iomappings for the control driver, based | |
660 | * on the DT data. Returns 0 in success, negative error value | |
661 | * otherwise. | |
662 | */ | |
663 | int __init omap2_control_base_init(void) | |
664 | { | |
665 | struct device_node *np; | |
666 | const struct of_device_id *match; | |
667 | struct control_init_data *data; | |
2208bf11 TK |
668 | |
669 | for_each_matching_node_and_match(np, omap_scrm_dt_match_table, &match) { | |
670 | data = (struct control_init_data *)match->data; | |
671 | ||
e5b63574 TK |
672 | omap2_ctrl_base = of_iomap(np, 0); |
673 | if (!omap2_ctrl_base) | |
2208bf11 TK |
674 | return -ENOMEM; |
675 | ||
e5b63574 | 676 | omap2_ctrl_offset = data->offset; |
2208bf11 TK |
677 | } |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
fe87414f TK |
682 | /** |
683 | * omap_control_init - low level init for the control driver | |
684 | * | |
685 | * Initializes the low level clock infrastructure for control driver. | |
686 | * Returns 0 in success, negative error value in failure. | |
687 | */ | |
688 | int __init omap_control_init(void) | |
689 | { | |
e5b63574 | 690 | struct device_node *np, *scm_conf; |
fe87414f TK |
691 | const struct of_device_id *match; |
692 | const struct omap_prcm_init_data *data; | |
693 | int ret; | |
e5b63574 | 694 | struct regmap *syscon; |
fe87414f TK |
695 | |
696 | for_each_matching_node_and_match(np, omap_scrm_dt_match_table, &match) { | |
697 | data = match->data; | |
698 | ||
e5b63574 TK |
699 | /* |
700 | * Check if we have scm_conf node, if yes, use this to | |
701 | * access clock registers. | |
702 | */ | |
703 | scm_conf = of_get_child_by_name(np, "scm_conf"); | |
704 | ||
705 | if (scm_conf) { | |
706 | syscon = syscon_node_to_regmap(scm_conf); | |
707 | ||
708 | if (IS_ERR(syscon)) | |
709 | return PTR_ERR(syscon); | |
710 | ||
711 | omap2_ctrl_syscon = syscon; | |
712 | ||
713 | if (of_get_child_by_name(scm_conf, "clocks")) { | |
714 | ret = omap2_clk_provider_init(scm_conf, | |
715 | data->index, | |
716 | syscon, NULL); | |
717 | if (ret) | |
718 | return ret; | |
719 | } | |
720 | ||
721 | iounmap(omap2_ctrl_base); | |
722 | omap2_ctrl_base = NULL; | |
723 | } else { | |
724 | /* No scm_conf found, direct access */ | |
725 | ret = omap2_clk_provider_init(np, data->index, NULL, | |
726 | omap2_ctrl_base); | |
727 | if (ret) | |
728 | return ret; | |
729 | } | |
fe87414f TK |
730 | } |
731 | ||
732 | return 0; | |
733 | } | |
2208bf11 TK |
734 | |
735 | /** | |
736 | * omap3_control_legacy_iomap_init - legacy iomap init for clock providers | |
737 | * | |
738 | * Legacy iomap init for clock provider. Needed only by legacy boot mode, | |
739 | * where the base addresses are not parsed from DT, but still required | |
740 | * by the clock driver to be setup properly. | |
741 | */ | |
742 | void __init omap3_control_legacy_iomap_init(void) | |
743 | { | |
744 | omap2_clk_legacy_provider_init(TI_CLKM_SCRM, omap2_ctrl_base); | |
745 | } |