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54d66222 | 1 | // SPDX-License-Identifier: GPL-2.0 |
0eecc636 TL |
2 | /* |
3 | * ti-sysc.c - Texas Instruments sysc interconnect target driver | |
0eecc636 TL |
4 | */ |
5 | ||
6 | #include <linux/io.h> | |
7 | #include <linux/clk.h> | |
2c355ff6 | 8 | #include <linux/clkdev.h> |
a885f0fe | 9 | #include <linux/delay.h> |
feaa8bae | 10 | #include <linux/list.h> |
0eecc636 TL |
11 | #include <linux/module.h> |
12 | #include <linux/platform_device.h> | |
a885f0fe | 13 | #include <linux/pm_domain.h> |
0eecc636 | 14 | #include <linux/pm_runtime.h> |
5062236e | 15 | #include <linux/reset.h> |
0eecc636 TL |
16 | #include <linux/of_address.h> |
17 | #include <linux/of_platform.h> | |
2c355ff6 | 18 | #include <linux/slab.h> |
feaa8bae | 19 | #include <linux/sys_soc.h> |
596e7955 | 20 | #include <linux/iopoll.h> |
2c355ff6 | 21 | |
70a65240 TL |
22 | #include <linux/platform_data/ti-sysc.h> |
23 | ||
24 | #include <dt-bindings/bus/ti-sysc.h> | |
0eecc636 | 25 | |
feaa8bae TL |
26 | #define DIS_ISP BIT(2) |
27 | #define DIS_IVA BIT(1) | |
28 | #define DIS_SGX BIT(0) | |
29 | ||
30 | #define SOC_FLAG(match, flag) { .machine = match, .data = (void *)(flag), } | |
31 | ||
e4a8fc05 | 32 | #define MAX_MODULE_SOFTRESET_WAIT 10000 |
596e7955 | 33 | |
feaa8bae TL |
34 | enum sysc_soc { |
35 | SOC_UNKNOWN, | |
36 | SOC_2420, | |
37 | SOC_2430, | |
38 | SOC_3430, | |
39 | SOC_3630, | |
40 | SOC_4430, | |
41 | SOC_4460, | |
42 | SOC_4470, | |
43 | SOC_5430, | |
44 | SOC_AM3, | |
45 | SOC_AM4, | |
46 | SOC_DRA7, | |
47 | }; | |
48 | ||
49 | struct sysc_address { | |
50 | unsigned long base; | |
51 | struct list_head node; | |
52 | }; | |
53 | ||
54 | struct sysc_soc_info { | |
55 | unsigned long general_purpose:1; | |
56 | enum sysc_soc soc; | |
57 | struct mutex list_lock; /* disabled modules list lock */ | |
58 | struct list_head disabled_modules; | |
59 | }; | |
0eecc636 TL |
60 | |
61 | enum sysc_clocks { | |
62 | SYSC_FCK, | |
63 | SYSC_ICK, | |
09dfe581 TL |
64 | SYSC_OPTFCK0, |
65 | SYSC_OPTFCK1, | |
66 | SYSC_OPTFCK2, | |
67 | SYSC_OPTFCK3, | |
68 | SYSC_OPTFCK4, | |
69 | SYSC_OPTFCK5, | |
70 | SYSC_OPTFCK6, | |
71 | SYSC_OPTFCK7, | |
0eecc636 TL |
72 | SYSC_MAX_CLOCKS, |
73 | }; | |
74 | ||
feaa8bae TL |
75 | static struct sysc_soc_info *sysc_soc; |
76 | static const char * const reg_names[] = { "rev", "sysc", "syss", }; | |
a54275f4 TL |
77 | static const char * const clock_names[SYSC_MAX_CLOCKS] = { |
78 | "fck", "ick", "opt0", "opt1", "opt2", "opt3", "opt4", | |
79 | "opt5", "opt6", "opt7", | |
80 | }; | |
0eecc636 | 81 | |
c5a2de97 TL |
82 | #define SYSC_IDLEMODE_MASK 3 |
83 | #define SYSC_CLOCKACTIVITY_MASK 3 | |
84 | ||
0eecc636 TL |
85 | /** |
86 | * struct sysc - TI sysc interconnect target module registers and capabilities | |
87 | * @dev: struct device pointer | |
88 | * @module_pa: physical address of the interconnect target module | |
89 | * @module_size: size of the interconnect target module | |
90 | * @module_va: virtual address of the interconnect target module | |
91 | * @offsets: register offsets from module base | |
b58056da | 92 | * @mdata: ti-sysc to hwmod translation data for a module |
0eecc636 | 93 | * @clocks: clocks used by the interconnect target module |
09dfe581 TL |
94 | * @clock_roles: clock role names for the found clocks |
95 | * @nr_clocks: number of clocks used by the interconnect target module | |
b58056da | 96 | * @rsts: resets used by the interconnect target module |
0eecc636 | 97 | * @legacy_mode: configured for legacy mode if set |
70a65240 TL |
98 | * @cap: interconnect target module capabilities |
99 | * @cfg: interconnect target module configuration | |
b58056da | 100 | * @cookie: data used by legacy platform callbacks |
566a9b05 TL |
101 | * @name: name if available |
102 | * @revision: interconnect target module revision | |
b58056da | 103 | * @enabled: sysc runtime enabled status |
62020f23 | 104 | * @needs_resume: runtime resume needed on resume from suspend |
b58056da SA |
105 | * @child_needs_resume: runtime resume needed for child on resume from suspend |
106 | * @disable_on_idle: status flag used for disabling modules with resets | |
107 | * @idle_work: work structure used to perform delayed idle on a module | |
e64c021f TL |
108 | * @pre_reset_quirk: module specific pre-reset quirk |
109 | * @post_reset_quirk: module specific post-reset quirk | |
4e23be47 | 110 | * @reset_done_quirk: module specific reset done quirk |
d7f563db | 111 | * @module_enable_quirk: module specific enable quirk |
c7d8669f | 112 | * @module_disable_quirk: module specific disable quirk |
e8639e1c TL |
113 | * @module_unlock_quirk: module specific sysconfig unlock quirk |
114 | * @module_lock_quirk: module specific sysconfig lock quirk | |
0eecc636 TL |
115 | */ |
116 | struct sysc { | |
117 | struct device *dev; | |
118 | u64 module_pa; | |
119 | u32 module_size; | |
120 | void __iomem *module_va; | |
121 | int offsets[SYSC_MAX_REGS]; | |
a3e92e7b | 122 | struct ti_sysc_module_data *mdata; |
09dfe581 TL |
123 | struct clk **clocks; |
124 | const char **clock_roles; | |
125 | int nr_clocks; | |
5062236e | 126 | struct reset_control *rsts; |
0eecc636 | 127 | const char *legacy_mode; |
70a65240 TL |
128 | const struct sysc_capabilities *cap; |
129 | struct sysc_config cfg; | |
ef70b0bd | 130 | struct ti_sysc_cookie cookie; |
566a9b05 TL |
131 | const char *name; |
132 | u32 revision; | |
8383e259 TL |
133 | unsigned int enabled:1; |
134 | unsigned int needs_resume:1; | |
135 | unsigned int child_needs_resume:1; | |
76f0f772 | 136 | struct delayed_work idle_work; |
e64c021f TL |
137 | void (*pre_reset_quirk)(struct sysc *sysc); |
138 | void (*post_reset_quirk)(struct sysc *sysc); | |
4e23be47 | 139 | void (*reset_done_quirk)(struct sysc *sysc); |
d7f563db | 140 | void (*module_enable_quirk)(struct sysc *sysc); |
c7d8669f | 141 | void (*module_disable_quirk)(struct sysc *sysc); |
e8639e1c TL |
142 | void (*module_unlock_quirk)(struct sysc *sysc); |
143 | void (*module_lock_quirk)(struct sysc *sysc); | |
0eecc636 TL |
144 | }; |
145 | ||
4014c08b TL |
146 | static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np, |
147 | bool is_child); | |
148 | ||
b7182b42 | 149 | static void sysc_write(struct sysc *ddata, int offset, u32 value) |
596e7955 | 150 | { |
5aa91295 TL |
151 | if (ddata->cfg.quirks & SYSC_QUIRK_16BIT) { |
152 | writew_relaxed(value & 0xffff, ddata->module_va + offset); | |
153 | ||
154 | /* Only i2c revision has LO and HI register with stride of 4 */ | |
155 | if (ddata->offsets[SYSC_REVISION] >= 0 && | |
156 | offset == ddata->offsets[SYSC_REVISION]) { | |
157 | u16 hi = value >> 16; | |
158 | ||
159 | writew_relaxed(hi, ddata->module_va + offset + 4); | |
160 | } | |
161 | ||
162 | return; | |
163 | } | |
164 | ||
596e7955 FA |
165 | writel_relaxed(value, ddata->module_va + offset); |
166 | } | |
167 | ||
566a9b05 TL |
168 | static u32 sysc_read(struct sysc *ddata, int offset) |
169 | { | |
170 | if (ddata->cfg.quirks & SYSC_QUIRK_16BIT) { | |
171 | u32 val; | |
172 | ||
173 | val = readw_relaxed(ddata->module_va + offset); | |
5aa91295 TL |
174 | |
175 | /* Only i2c revision has LO and HI register with stride of 4 */ | |
176 | if (ddata->offsets[SYSC_REVISION] >= 0 && | |
177 | offset == ddata->offsets[SYSC_REVISION]) { | |
178 | u16 tmp = readw_relaxed(ddata->module_va + offset + 4); | |
179 | ||
180 | val |= tmp << 16; | |
181 | } | |
566a9b05 TL |
182 | |
183 | return val; | |
184 | } | |
185 | ||
186 | return readl_relaxed(ddata->module_va + offset); | |
187 | } | |
188 | ||
09dfe581 TL |
189 | static bool sysc_opt_clks_needed(struct sysc *ddata) |
190 | { | |
191 | return !!(ddata->cfg.quirks & SYSC_QUIRK_OPT_CLKS_NEEDED); | |
192 | } | |
193 | ||
0eecc636 TL |
194 | static u32 sysc_read_revision(struct sysc *ddata) |
195 | { | |
566a9b05 TL |
196 | int offset = ddata->offsets[SYSC_REVISION]; |
197 | ||
198 | if (offset < 0) | |
199 | return 0; | |
200 | ||
201 | return sysc_read(ddata, offset); | |
0eecc636 TL |
202 | } |
203 | ||
e0db94fe TL |
204 | static u32 sysc_read_sysconfig(struct sysc *ddata) |
205 | { | |
206 | int offset = ddata->offsets[SYSC_SYSCONFIG]; | |
207 | ||
208 | if (offset < 0) | |
209 | return 0; | |
210 | ||
211 | return sysc_read(ddata, offset); | |
212 | } | |
213 | ||
214 | static u32 sysc_read_sysstatus(struct sysc *ddata) | |
215 | { | |
216 | int offset = ddata->offsets[SYSC_SYSSTATUS]; | |
217 | ||
218 | if (offset < 0) | |
219 | return 0; | |
220 | ||
221 | return sysc_read(ddata, offset); | |
222 | } | |
223 | ||
d46f9fbe TL |
224 | /* Poll on reset status */ |
225 | static int sysc_wait_softreset(struct sysc *ddata) | |
226 | { | |
227 | u32 sysc_mask, syss_done, rstval; | |
228 | int syss_offset, error = 0; | |
229 | ||
e7ae08d3 TL |
230 | if (ddata->cap->regbits->srst_shift < 0) |
231 | return 0; | |
232 | ||
d46f9fbe TL |
233 | syss_offset = ddata->offsets[SYSC_SYSSTATUS]; |
234 | sysc_mask = BIT(ddata->cap->regbits->srst_shift); | |
235 | ||
236 | if (ddata->cfg.quirks & SYSS_QUIRK_RESETDONE_INVERTED) | |
237 | syss_done = 0; | |
238 | else | |
239 | syss_done = ddata->cfg.syss_mask; | |
240 | ||
241 | if (syss_offset >= 0) { | |
9f911392 TL |
242 | error = readx_poll_timeout_atomic(sysc_read_sysstatus, ddata, |
243 | rstval, (rstval & ddata->cfg.syss_mask) == | |
244 | syss_done, 100, MAX_MODULE_SOFTRESET_WAIT); | |
d46f9fbe TL |
245 | |
246 | } else if (ddata->cfg.quirks & SYSC_QUIRK_RESET_STATUS) { | |
9f911392 TL |
247 | error = readx_poll_timeout_atomic(sysc_read_sysconfig, ddata, |
248 | rstval, !(rstval & sysc_mask), | |
249 | 100, MAX_MODULE_SOFTRESET_WAIT); | |
d46f9fbe TL |
250 | } |
251 | ||
252 | return error; | |
253 | } | |
254 | ||
a54275f4 TL |
255 | static int sysc_add_named_clock_from_child(struct sysc *ddata, |
256 | const char *name, | |
257 | const char *optfck_name) | |
258 | { | |
259 | struct device_node *np = ddata->dev->of_node; | |
260 | struct device_node *child; | |
261 | struct clk_lookup *cl; | |
262 | struct clk *clock; | |
263 | const char *n; | |
264 | ||
265 | if (name) | |
266 | n = name; | |
267 | else | |
268 | n = optfck_name; | |
269 | ||
270 | /* Does the clock alias already exist? */ | |
271 | clock = of_clk_get_by_name(np, n); | |
272 | if (!IS_ERR(clock)) { | |
273 | clk_put(clock); | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | child = of_get_next_available_child(np, NULL); | |
279 | if (!child) | |
280 | return -ENODEV; | |
281 | ||
282 | clock = devm_get_clk_from_child(ddata->dev, child, name); | |
283 | if (IS_ERR(clock)) | |
284 | return PTR_ERR(clock); | |
285 | ||
286 | /* | |
287 | * Use clkdev_add() instead of clkdev_alloc() to avoid the MAX_DEV_ID | |
288 | * limit for clk_get(). If cl ever needs to be freed, it should be done | |
289 | * with clkdev_drop(). | |
290 | */ | |
291 | cl = kcalloc(1, sizeof(*cl), GFP_KERNEL); | |
292 | if (!cl) | |
293 | return -ENOMEM; | |
294 | ||
295 | cl->con_id = n; | |
296 | cl->dev_id = dev_name(ddata->dev); | |
297 | cl->clk = clock; | |
298 | clkdev_add(cl); | |
299 | ||
300 | clk_put(clock); | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | static int sysc_init_ext_opt_clock(struct sysc *ddata, const char *name) | |
306 | { | |
307 | const char *optfck_name; | |
308 | int error, index; | |
309 | ||
310 | if (ddata->nr_clocks < SYSC_OPTFCK0) | |
311 | index = SYSC_OPTFCK0; | |
312 | else | |
313 | index = ddata->nr_clocks; | |
314 | ||
315 | if (name) | |
316 | optfck_name = name; | |
317 | else | |
318 | optfck_name = clock_names[index]; | |
319 | ||
320 | error = sysc_add_named_clock_from_child(ddata, name, optfck_name); | |
321 | if (error) | |
322 | return error; | |
323 | ||
324 | ddata->clock_roles[index] = optfck_name; | |
325 | ddata->nr_clocks++; | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
09dfe581 | 330 | static int sysc_get_one_clock(struct sysc *ddata, const char *name) |
0eecc636 | 331 | { |
09dfe581 TL |
332 | int error, i, index = -ENODEV; |
333 | ||
334 | if (!strncmp(clock_names[SYSC_FCK], name, 3)) | |
335 | index = SYSC_FCK; | |
336 | else if (!strncmp(clock_names[SYSC_ICK], name, 3)) | |
337 | index = SYSC_ICK; | |
338 | ||
339 | if (index < 0) { | |
340 | for (i = SYSC_OPTFCK0; i < SYSC_MAX_CLOCKS; i++) { | |
c97c8620 | 341 | if (!ddata->clocks[i]) { |
09dfe581 TL |
342 | index = i; |
343 | break; | |
344 | } | |
345 | } | |
346 | } | |
0eecc636 | 347 | |
09dfe581 TL |
348 | if (index < 0) { |
349 | dev_err(ddata->dev, "clock %s not added\n", name); | |
350 | return index; | |
0eecc636 | 351 | } |
0eecc636 TL |
352 | |
353 | ddata->clocks[index] = devm_clk_get(ddata->dev, name); | |
354 | if (IS_ERR(ddata->clocks[index])) { | |
0eecc636 TL |
355 | dev_err(ddata->dev, "clock get error for %s: %li\n", |
356 | name, PTR_ERR(ddata->clocks[index])); | |
357 | ||
358 | return PTR_ERR(ddata->clocks[index]); | |
359 | } | |
360 | ||
361 | error = clk_prepare(ddata->clocks[index]); | |
362 | if (error) { | |
363 | dev_err(ddata->dev, "clock prepare error for %s: %i\n", | |
364 | name, error); | |
365 | ||
366 | return error; | |
367 | } | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | static int sysc_get_clocks(struct sysc *ddata) | |
373 | { | |
09dfe581 TL |
374 | struct device_node *np = ddata->dev->of_node; |
375 | struct property *prop; | |
376 | const char *name; | |
377 | int nr_fck = 0, nr_ick = 0, i, error = 0; | |
378 | ||
20749051 | 379 | ddata->clock_roles = devm_kcalloc(ddata->dev, |
09dfe581 | 380 | SYSC_MAX_CLOCKS, |
20749051 | 381 | sizeof(*ddata->clock_roles), |
09dfe581 TL |
382 | GFP_KERNEL); |
383 | if (!ddata->clock_roles) | |
384 | return -ENOMEM; | |
385 | ||
386 | of_property_for_each_string(np, "clock-names", prop, name) { | |
387 | if (!strncmp(clock_names[SYSC_FCK], name, 3)) | |
388 | nr_fck++; | |
389 | if (!strncmp(clock_names[SYSC_ICK], name, 3)) | |
390 | nr_ick++; | |
391 | ddata->clock_roles[ddata->nr_clocks] = name; | |
392 | ddata->nr_clocks++; | |
393 | } | |
394 | ||
395 | if (ddata->nr_clocks < 1) | |
396 | return 0; | |
397 | ||
a54275f4 TL |
398 | if ((ddata->cfg.quirks & SYSC_QUIRK_EXT_OPT_CLOCK)) { |
399 | error = sysc_init_ext_opt_clock(ddata, NULL); | |
400 | if (error) | |
401 | return error; | |
402 | } | |
403 | ||
09dfe581 TL |
404 | if (ddata->nr_clocks > SYSC_MAX_CLOCKS) { |
405 | dev_err(ddata->dev, "too many clocks for %pOF\n", np); | |
406 | ||
407 | return -EINVAL; | |
408 | } | |
409 | ||
410 | if (nr_fck > 1 || nr_ick > 1) { | |
411 | dev_err(ddata->dev, "max one fck and ick for %pOF\n", np); | |
0eecc636 | 412 | |
09dfe581 TL |
413 | return -EINVAL; |
414 | } | |
415 | ||
2c81f0f6 TL |
416 | /* Always add a slot for main clocks fck and ick even if unused */ |
417 | if (!nr_fck) | |
418 | ddata->nr_clocks++; | |
419 | if (!nr_ick) | |
420 | ddata->nr_clocks++; | |
421 | ||
20749051 KC |
422 | ddata->clocks = devm_kcalloc(ddata->dev, |
423 | ddata->nr_clocks, sizeof(*ddata->clocks), | |
09dfe581 TL |
424 | GFP_KERNEL); |
425 | if (!ddata->clocks) | |
426 | return -ENOMEM; | |
427 | ||
7b4f8ac2 TL |
428 | for (i = 0; i < SYSC_MAX_CLOCKS; i++) { |
429 | const char *name = ddata->clock_roles[i]; | |
430 | ||
431 | if (!name) | |
432 | continue; | |
433 | ||
434 | error = sysc_get_one_clock(ddata, name); | |
2783d063 | 435 | if (error) |
0eecc636 TL |
436 | return error; |
437 | } | |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
d878970f TL |
442 | static int sysc_enable_main_clocks(struct sysc *ddata) |
443 | { | |
444 | struct clk *clock; | |
445 | int i, error; | |
446 | ||
447 | if (!ddata->clocks) | |
448 | return 0; | |
449 | ||
450 | for (i = 0; i < SYSC_OPTFCK0; i++) { | |
451 | clock = ddata->clocks[i]; | |
452 | ||
453 | /* Main clocks may not have ick */ | |
454 | if (IS_ERR_OR_NULL(clock)) | |
455 | continue; | |
456 | ||
457 | error = clk_enable(clock); | |
458 | if (error) | |
459 | goto err_disable; | |
460 | } | |
461 | ||
462 | return 0; | |
463 | ||
464 | err_disable: | |
465 | for (i--; i >= 0; i--) { | |
466 | clock = ddata->clocks[i]; | |
467 | ||
468 | /* Main clocks may not have ick */ | |
469 | if (IS_ERR_OR_NULL(clock)) | |
470 | continue; | |
471 | ||
472 | clk_disable(clock); | |
473 | } | |
474 | ||
475 | return error; | |
476 | } | |
477 | ||
478 | static void sysc_disable_main_clocks(struct sysc *ddata) | |
479 | { | |
480 | struct clk *clock; | |
481 | int i; | |
482 | ||
483 | if (!ddata->clocks) | |
484 | return; | |
485 | ||
486 | for (i = 0; i < SYSC_OPTFCK0; i++) { | |
487 | clock = ddata->clocks[i]; | |
488 | if (IS_ERR_OR_NULL(clock)) | |
489 | continue; | |
490 | ||
491 | clk_disable(clock); | |
492 | } | |
493 | } | |
494 | ||
495 | static int sysc_enable_opt_clocks(struct sysc *ddata) | |
496 | { | |
497 | struct clk *clock; | |
498 | int i, error; | |
499 | ||
2c81f0f6 | 500 | if (!ddata->clocks || ddata->nr_clocks < SYSC_OPTFCK0 + 1) |
d878970f TL |
501 | return 0; |
502 | ||
503 | for (i = SYSC_OPTFCK0; i < SYSC_MAX_CLOCKS; i++) { | |
504 | clock = ddata->clocks[i]; | |
505 | ||
506 | /* Assume no holes for opt clocks */ | |
507 | if (IS_ERR_OR_NULL(clock)) | |
508 | return 0; | |
509 | ||
510 | error = clk_enable(clock); | |
511 | if (error) | |
512 | goto err_disable; | |
513 | } | |
514 | ||
515 | return 0; | |
516 | ||
517 | err_disable: | |
518 | for (i--; i >= 0; i--) { | |
519 | clock = ddata->clocks[i]; | |
520 | if (IS_ERR_OR_NULL(clock)) | |
521 | continue; | |
522 | ||
523 | clk_disable(clock); | |
524 | } | |
525 | ||
526 | return error; | |
527 | } | |
528 | ||
529 | static void sysc_disable_opt_clocks(struct sysc *ddata) | |
530 | { | |
531 | struct clk *clock; | |
532 | int i; | |
533 | ||
2c81f0f6 | 534 | if (!ddata->clocks || ddata->nr_clocks < SYSC_OPTFCK0 + 1) |
d878970f TL |
535 | return; |
536 | ||
537 | for (i = SYSC_OPTFCK0; i < SYSC_MAX_CLOCKS; i++) { | |
538 | clock = ddata->clocks[i]; | |
539 | ||
540 | /* Assume no holes for opt clocks */ | |
541 | if (IS_ERR_OR_NULL(clock)) | |
542 | return; | |
543 | ||
544 | clk_disable(clock); | |
545 | } | |
546 | } | |
547 | ||
2b2f7def TL |
548 | static void sysc_clkdm_deny_idle(struct sysc *ddata) |
549 | { | |
550 | struct ti_sysc_platform_data *pdata; | |
551 | ||
94f63457 | 552 | if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO)) |
2b2f7def TL |
553 | return; |
554 | ||
555 | pdata = dev_get_platdata(ddata->dev); | |
556 | if (pdata && pdata->clkdm_deny_idle) | |
557 | pdata->clkdm_deny_idle(ddata->dev, &ddata->cookie); | |
558 | } | |
559 | ||
560 | static void sysc_clkdm_allow_idle(struct sysc *ddata) | |
561 | { | |
562 | struct ti_sysc_platform_data *pdata; | |
563 | ||
94f63457 | 564 | if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO)) |
2b2f7def TL |
565 | return; |
566 | ||
567 | pdata = dev_get_platdata(ddata->dev); | |
568 | if (pdata && pdata->clkdm_allow_idle) | |
569 | pdata->clkdm_allow_idle(ddata->dev, &ddata->cookie); | |
570 | } | |
571 | ||
5062236e | 572 | /** |
b11c1ea1 | 573 | * sysc_init_resets - init rstctrl reset line if configured |
5062236e TL |
574 | * @ddata: device driver data |
575 | * | |
b11c1ea1 | 576 | * See sysc_rstctrl_reset_deassert(). |
5062236e TL |
577 | */ |
578 | static int sysc_init_resets(struct sysc *ddata) | |
579 | { | |
5062236e | 580 | ddata->rsts = |
bb88b86c | 581 | devm_reset_control_get_optional_shared(ddata->dev, "rstctrl"); |
5062236e | 582 | |
3f2c4205 | 583 | return PTR_ERR_OR_ZERO(ddata->rsts); |
5062236e TL |
584 | } |
585 | ||
0eecc636 TL |
586 | /** |
587 | * sysc_parse_and_check_child_range - parses module IO region from ranges | |
588 | * @ddata: device driver data | |
589 | * | |
590 | * In general we only need rev, syss, and sysc registers and not the whole | |
591 | * module range. But we do want the offsets for these registers from the | |
592 | * module base. This allows us to check them against the legacy hwmod | |
593 | * platform data. Let's also check the ranges are configured properly. | |
594 | */ | |
595 | static int sysc_parse_and_check_child_range(struct sysc *ddata) | |
596 | { | |
597 | struct device_node *np = ddata->dev->of_node; | |
598 | const __be32 *ranges; | |
599 | u32 nr_addr, nr_size; | |
600 | int len, error; | |
601 | ||
602 | ranges = of_get_property(np, "ranges", &len); | |
603 | if (!ranges) { | |
604 | dev_err(ddata->dev, "missing ranges for %pOF\n", np); | |
605 | ||
606 | return -ENOENT; | |
607 | } | |
608 | ||
609 | len /= sizeof(*ranges); | |
610 | ||
611 | if (len < 3) { | |
612 | dev_err(ddata->dev, "incomplete ranges for %pOF\n", np); | |
613 | ||
614 | return -EINVAL; | |
615 | } | |
616 | ||
617 | error = of_property_read_u32(np, "#address-cells", &nr_addr); | |
618 | if (error) | |
619 | return -ENOENT; | |
620 | ||
621 | error = of_property_read_u32(np, "#size-cells", &nr_size); | |
622 | if (error) | |
623 | return -ENOENT; | |
624 | ||
625 | if (nr_addr != 1 || nr_size != 1) { | |
626 | dev_err(ddata->dev, "invalid ranges for %pOF\n", np); | |
627 | ||
628 | return -EINVAL; | |
629 | } | |
630 | ||
631 | ranges++; | |
632 | ddata->module_pa = of_translate_address(np, ranges++); | |
633 | ddata->module_size = be32_to_cpup(ranges); | |
634 | ||
0eecc636 TL |
635 | return 0; |
636 | } | |
637 | ||
3bb37c8e TL |
638 | static struct device_node *stdout_path; |
639 | ||
640 | static void sysc_init_stdout_path(struct sysc *ddata) | |
641 | { | |
642 | struct device_node *np = NULL; | |
643 | const char *uart; | |
644 | ||
645 | if (IS_ERR(stdout_path)) | |
646 | return; | |
647 | ||
648 | if (stdout_path) | |
649 | return; | |
650 | ||
651 | np = of_find_node_by_path("/chosen"); | |
652 | if (!np) | |
653 | goto err; | |
654 | ||
655 | uart = of_get_property(np, "stdout-path", NULL); | |
656 | if (!uart) | |
657 | goto err; | |
658 | ||
659 | np = of_find_node_by_path(uart); | |
660 | if (!np) | |
661 | goto err; | |
662 | ||
663 | stdout_path = np; | |
664 | ||
665 | return; | |
666 | ||
667 | err: | |
668 | stdout_path = ERR_PTR(-ENODEV); | |
669 | } | |
670 | ||
671 | static void sysc_check_quirk_stdout(struct sysc *ddata, | |
672 | struct device_node *np) | |
673 | { | |
674 | sysc_init_stdout_path(ddata); | |
675 | if (np != stdout_path) | |
676 | return; | |
677 | ||
678 | ddata->cfg.quirks |= SYSC_QUIRK_NO_IDLE_ON_INIT | | |
679 | SYSC_QUIRK_NO_RESET_ON_INIT; | |
680 | } | |
681 | ||
0eecc636 TL |
682 | /** |
683 | * sysc_check_one_child - check child configuration | |
684 | * @ddata: device driver data | |
685 | * @np: child device node | |
686 | * | |
687 | * Let's avoid messy situations where we have new interconnect target | |
688 | * node but children have "ti,hwmods". These belong to the interconnect | |
689 | * target node and are managed by this driver. | |
690 | */ | |
c6e78d70 ND |
691 | static void sysc_check_one_child(struct sysc *ddata, |
692 | struct device_node *np) | |
0eecc636 TL |
693 | { |
694 | const char *name; | |
695 | ||
696 | name = of_get_property(np, "ti,hwmods", NULL); | |
7320fd32 | 697 | if (name && !of_device_is_compatible(np, "ti,sysc")) |
0eecc636 TL |
698 | dev_warn(ddata->dev, "really a child ti,hwmods property?"); |
699 | ||
3bb37c8e | 700 | sysc_check_quirk_stdout(ddata, np); |
4014c08b | 701 | sysc_parse_dts_quirks(ddata, np, true); |
0eecc636 TL |
702 | } |
703 | ||
c6e78d70 | 704 | static void sysc_check_children(struct sysc *ddata) |
0eecc636 TL |
705 | { |
706 | struct device_node *child; | |
0eecc636 | 707 | |
c6e78d70 ND |
708 | for_each_child_of_node(ddata->dev->of_node, child) |
709 | sysc_check_one_child(ddata, child); | |
0eecc636 TL |
710 | } |
711 | ||
a7199e2b TL |
712 | /* |
713 | * So far only I2C uses 16-bit read access with clockactivity with revision | |
714 | * in two registers with stride of 4. We can detect this based on the rev | |
715 | * register size to configure things far enough to be able to properly read | |
716 | * the revision register. | |
717 | */ | |
718 | static void sysc_check_quirk_16bit(struct sysc *ddata, struct resource *res) | |
719 | { | |
dd57ac1e | 720 | if (resource_size(res) == 8) |
a7199e2b | 721 | ddata->cfg.quirks |= SYSC_QUIRK_16BIT | SYSC_QUIRK_USE_CLOCKACT; |
a7199e2b TL |
722 | } |
723 | ||
0eecc636 TL |
724 | /** |
725 | * sysc_parse_one - parses the interconnect target module registers | |
726 | * @ddata: device driver data | |
727 | * @reg: register to parse | |
728 | */ | |
729 | static int sysc_parse_one(struct sysc *ddata, enum sysc_registers reg) | |
730 | { | |
731 | struct resource *res; | |
732 | const char *name; | |
733 | ||
734 | switch (reg) { | |
735 | case SYSC_REVISION: | |
736 | case SYSC_SYSCONFIG: | |
737 | case SYSC_SYSSTATUS: | |
738 | name = reg_names[reg]; | |
739 | break; | |
740 | default: | |
741 | return -EINVAL; | |
742 | } | |
743 | ||
744 | res = platform_get_resource_byname(to_platform_device(ddata->dev), | |
745 | IORESOURCE_MEM, name); | |
746 | if (!res) { | |
0eecc636 TL |
747 | ddata->offsets[reg] = -ENODEV; |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | ddata->offsets[reg] = res->start - ddata->module_pa; | |
a7199e2b TL |
753 | if (reg == SYSC_REVISION) |
754 | sysc_check_quirk_16bit(ddata, res); | |
0eecc636 TL |
755 | |
756 | return 0; | |
757 | } | |
758 | ||
759 | static int sysc_parse_registers(struct sysc *ddata) | |
760 | { | |
761 | int i, error; | |
762 | ||
763 | for (i = 0; i < SYSC_MAX_REGS; i++) { | |
764 | error = sysc_parse_one(ddata, i); | |
765 | if (error) | |
766 | return error; | |
767 | } | |
768 | ||
769 | return 0; | |
770 | } | |
771 | ||
772 | /** | |
773 | * sysc_check_registers - check for misconfigured register overlaps | |
774 | * @ddata: device driver data | |
775 | */ | |
776 | static int sysc_check_registers(struct sysc *ddata) | |
777 | { | |
778 | int i, j, nr_regs = 0, nr_matches = 0; | |
779 | ||
780 | for (i = 0; i < SYSC_MAX_REGS; i++) { | |
781 | if (ddata->offsets[i] < 0) | |
782 | continue; | |
783 | ||
784 | if (ddata->offsets[i] > (ddata->module_size - 4)) { | |
785 | dev_err(ddata->dev, "register outside module range"); | |
786 | ||
787 | return -EINVAL; | |
788 | } | |
789 | ||
790 | for (j = 0; j < SYSC_MAX_REGS; j++) { | |
791 | if (ddata->offsets[j] < 0) | |
792 | continue; | |
793 | ||
794 | if (ddata->offsets[i] == ddata->offsets[j]) | |
795 | nr_matches++; | |
796 | } | |
797 | nr_regs++; | |
798 | } | |
799 | ||
0eecc636 TL |
800 | if (nr_matches > nr_regs) { |
801 | dev_err(ddata->dev, "overlapping registers: (%i/%i)", | |
802 | nr_regs, nr_matches); | |
803 | ||
804 | return -EINVAL; | |
805 | } | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | /** | |
811 | * syc_ioremap - ioremap register space for the interconnect target module | |
0ef8e3bb | 812 | * @ddata: device driver data |
0eecc636 TL |
813 | * |
814 | * Note that the interconnect target module registers can be anywhere | |
0ef8e3bb TL |
815 | * within the interconnect target module range. For example, SGX has |
816 | * them at offset 0x1fc00 in the 32MB module address space. And cpsw | |
817 | * has them at offset 0x1200 in the CPSW_WR child. Usually the | |
818 | * the interconnect target module registers are at the beginning of | |
819 | * the module range though. | |
0eecc636 TL |
820 | */ |
821 | static int sysc_ioremap(struct sysc *ddata) | |
822 | { | |
0ef8e3bb | 823 | int size; |
0eecc636 | 824 | |
e4f50c8d TL |
825 | if (ddata->offsets[SYSC_REVISION] < 0 && |
826 | ddata->offsets[SYSC_SYSCONFIG] < 0 && | |
827 | ddata->offsets[SYSC_SYSSTATUS] < 0) { | |
828 | size = ddata->module_size; | |
829 | } else { | |
830 | size = max3(ddata->offsets[SYSC_REVISION], | |
831 | ddata->offsets[SYSC_SYSCONFIG], | |
832 | ddata->offsets[SYSC_SYSSTATUS]); | |
0ef8e3bb | 833 | |
4e23be47 TL |
834 | if (size < SZ_1K) |
835 | size = SZ_1K; | |
836 | ||
e4f50c8d | 837 | if ((size + sizeof(u32)) > ddata->module_size) |
4e23be47 | 838 | size = ddata->module_size; |
e4f50c8d | 839 | } |
0eecc636 TL |
840 | |
841 | ddata->module_va = devm_ioremap(ddata->dev, | |
842 | ddata->module_pa, | |
0ef8e3bb | 843 | size + sizeof(u32)); |
0eecc636 TL |
844 | if (!ddata->module_va) |
845 | return -EIO; | |
846 | ||
847 | return 0; | |
848 | } | |
849 | ||
850 | /** | |
851 | * sysc_map_and_check_registers - ioremap and check device registers | |
852 | * @ddata: device driver data | |
853 | */ | |
854 | static int sysc_map_and_check_registers(struct sysc *ddata) | |
855 | { | |
2928135c | 856 | struct device_node *np = ddata->dev->of_node; |
0eecc636 TL |
857 | int error; |
858 | ||
2928135c TL |
859 | if (!of_get_property(np, "reg", NULL)) |
860 | return 0; | |
861 | ||
0eecc636 TL |
862 | error = sysc_parse_and_check_child_range(ddata); |
863 | if (error) | |
864 | return error; | |
865 | ||
c6e78d70 | 866 | sysc_check_children(ddata); |
0eecc636 TL |
867 | |
868 | error = sysc_parse_registers(ddata); | |
869 | if (error) | |
870 | return error; | |
871 | ||
872 | error = sysc_ioremap(ddata); | |
873 | if (error) | |
874 | return error; | |
875 | ||
876 | error = sysc_check_registers(ddata); | |
877 | if (error) | |
878 | return error; | |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | /** | |
884 | * sysc_show_rev - read and show interconnect target module revision | |
885 | * @bufp: buffer to print the information to | |
886 | * @ddata: device driver data | |
887 | */ | |
888 | static int sysc_show_rev(char *bufp, struct sysc *ddata) | |
889 | { | |
566a9b05 | 890 | int len; |
0eecc636 TL |
891 | |
892 | if (ddata->offsets[SYSC_REVISION] < 0) | |
893 | return sprintf(bufp, ":NA"); | |
894 | ||
566a9b05 | 895 | len = sprintf(bufp, ":%08x", ddata->revision); |
0eecc636 TL |
896 | |
897 | return len; | |
898 | } | |
899 | ||
900 | static int sysc_show_reg(struct sysc *ddata, | |
901 | char *bufp, enum sysc_registers reg) | |
902 | { | |
903 | if (ddata->offsets[reg] < 0) | |
904 | return sprintf(bufp, ":NA"); | |
905 | ||
906 | return sprintf(bufp, ":%x", ddata->offsets[reg]); | |
907 | } | |
908 | ||
a885f0fe TL |
909 | static int sysc_show_name(char *bufp, struct sysc *ddata) |
910 | { | |
911 | if (!ddata->name) | |
912 | return 0; | |
913 | ||
914 | return sprintf(bufp, ":%s", ddata->name); | |
915 | } | |
916 | ||
0eecc636 TL |
917 | /** |
918 | * sysc_show_registers - show information about interconnect target module | |
919 | * @ddata: device driver data | |
920 | */ | |
921 | static void sysc_show_registers(struct sysc *ddata) | |
922 | { | |
923 | char buf[128]; | |
924 | char *bufp = buf; | |
925 | int i; | |
926 | ||
927 | for (i = 0; i < SYSC_MAX_REGS; i++) | |
928 | bufp += sysc_show_reg(ddata, bufp, i); | |
929 | ||
930 | bufp += sysc_show_rev(bufp, ddata); | |
a885f0fe | 931 | bufp += sysc_show_name(bufp, ddata); |
0eecc636 TL |
932 | |
933 | dev_dbg(ddata->dev, "%llx:%x%s\n", | |
934 | ddata->module_pa, ddata->module_size, | |
935 | buf); | |
936 | } | |
937 | ||
e8639e1c TL |
938 | /** |
939 | * sysc_write_sysconfig - handle sysconfig quirks for register write | |
940 | * @ddata: device driver data | |
941 | * @value: register value | |
942 | */ | |
943 | static void sysc_write_sysconfig(struct sysc *ddata, u32 value) | |
944 | { | |
945 | if (ddata->module_unlock_quirk) | |
946 | ddata->module_unlock_quirk(ddata); | |
947 | ||
948 | sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], value); | |
949 | ||
950 | if (ddata->module_lock_quirk) | |
951 | ddata->module_lock_quirk(ddata); | |
952 | } | |
953 | ||
d59b6056 | 954 | #define SYSC_IDLE_MASK (SYSC_NR_IDLEMODES - 1) |
ae9ae12e | 955 | #define SYSC_CLOCACT_ICK 2 |
d59b6056 | 956 | |
2b2f7def | 957 | /* Caller needs to manage sysc_clkdm_deny_idle() and sysc_clkdm_allow_idle() */ |
d59b6056 RQ |
958 | static int sysc_enable_module(struct device *dev) |
959 | { | |
960 | struct sysc *ddata; | |
961 | const struct sysc_regbits *regbits; | |
962 | u32 reg, idlemodes, best_mode; | |
d46f9fbe | 963 | int error; |
d59b6056 RQ |
964 | |
965 | ddata = dev_get_drvdata(dev); | |
d46f9fbe TL |
966 | |
967 | /* | |
968 | * Some modules like DSS reset automatically on idle. Enable optional | |
969 | * reset clocks and wait for OCP softreset to complete. | |
970 | */ | |
971 | if (ddata->cfg.quirks & SYSC_QUIRK_OPT_CLKS_IN_RESET) { | |
972 | error = sysc_enable_opt_clocks(ddata); | |
973 | if (error) { | |
974 | dev_err(ddata->dev, | |
975 | "Optional clocks failed for enable: %i\n", | |
976 | error); | |
977 | return error; | |
978 | } | |
979 | } | |
e275d210 TL |
980 | /* |
981 | * Some modules like i2c and hdq1w have unusable reset status unless | |
982 | * the module reset quirk is enabled. Skip status check on enable. | |
983 | */ | |
984 | if (!(ddata->cfg.quirks & SYSC_MODULE_QUIRK_ENA_RESETDONE)) { | |
985 | error = sysc_wait_softreset(ddata); | |
986 | if (error) | |
987 | dev_warn(ddata->dev, "OCP softreset timed out\n"); | |
988 | } | |
d46f9fbe TL |
989 | if (ddata->cfg.quirks & SYSC_QUIRK_OPT_CLKS_IN_RESET) |
990 | sysc_disable_opt_clocks(ddata); | |
991 | ||
992 | /* | |
993 | * Some subsystem private interconnects, like DSS top level module, | |
994 | * need only the automatic OCP softreset handling with no sysconfig | |
995 | * register bits to configure. | |
996 | */ | |
d59b6056 RQ |
997 | if (ddata->offsets[SYSC_SYSCONFIG] == -ENODEV) |
998 | return 0; | |
999 | ||
d59b6056 RQ |
1000 | regbits = ddata->cap->regbits; |
1001 | reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]); | |
1002 | ||
08b91dd6 TL |
1003 | /* |
1004 | * Set CLOCKACTIVITY, we only use it for ick. And we only configure it | |
1005 | * based on the SYSC_QUIRK_USE_CLOCKACT flag, not based on the hardware | |
1006 | * capabilities. See the old HWMOD_SET_DEFAULT_CLOCKACT flag. | |
1007 | */ | |
ae9ae12e | 1008 | if (regbits->clkact_shift >= 0 && |
08b91dd6 | 1009 | (ddata->cfg.quirks & SYSC_QUIRK_USE_CLOCKACT)) |
ae9ae12e TL |
1010 | reg |= SYSC_CLOCACT_ICK << regbits->clkact_shift; |
1011 | ||
d59b6056 RQ |
1012 | /* Set SIDLE mode */ |
1013 | idlemodes = ddata->cfg.sidlemodes; | |
1014 | if (!idlemodes || regbits->sidle_shift < 0) | |
1015 | goto set_midle; | |
1016 | ||
fb685f1c TL |
1017 | if (ddata->cfg.quirks & (SYSC_QUIRK_SWSUP_SIDLE | |
1018 | SYSC_QUIRK_SWSUP_SIDLE_ACT)) { | |
1019 | best_mode = SYSC_IDLE_NO; | |
1020 | } else { | |
1021 | best_mode = fls(ddata->cfg.sidlemodes) - 1; | |
1022 | if (best_mode > SYSC_IDLE_MASK) { | |
1023 | dev_err(dev, "%s: invalid sidlemode\n", __func__); | |
1024 | return -EINVAL; | |
1025 | } | |
6e09f497 TL |
1026 | |
1027 | /* Set WAKEUP */ | |
1028 | if (regbits->enwkup_shift >= 0 && | |
1029 | ddata->cfg.sysc_val & BIT(regbits->enwkup_shift)) | |
1030 | reg |= BIT(regbits->enwkup_shift); | |
d59b6056 RQ |
1031 | } |
1032 | ||
1033 | reg &= ~(SYSC_IDLE_MASK << regbits->sidle_shift); | |
1034 | reg |= best_mode << regbits->sidle_shift; | |
e8639e1c | 1035 | sysc_write_sysconfig(ddata, reg); |
d59b6056 RQ |
1036 | |
1037 | set_midle: | |
1038 | /* Set MIDLE mode */ | |
1039 | idlemodes = ddata->cfg.midlemodes; | |
1040 | if (!idlemodes || regbits->midle_shift < 0) | |
eec26555 | 1041 | goto set_autoidle; |
d59b6056 RQ |
1042 | |
1043 | best_mode = fls(ddata->cfg.midlemodes) - 1; | |
1044 | if (best_mode > SYSC_IDLE_MASK) { | |
1045 | dev_err(dev, "%s: invalid midlemode\n", __func__); | |
1046 | return -EINVAL; | |
1047 | } | |
1048 | ||
03856e92 TL |
1049 | if (ddata->cfg.quirks & SYSC_QUIRK_SWSUP_MSTANDBY) |
1050 | best_mode = SYSC_IDLE_NO; | |
1051 | ||
d59b6056 RQ |
1052 | reg &= ~(SYSC_IDLE_MASK << regbits->midle_shift); |
1053 | reg |= best_mode << regbits->midle_shift; | |
e8639e1c | 1054 | sysc_write_sysconfig(ddata, reg); |
d59b6056 | 1055 | |
eec26555 TL |
1056 | set_autoidle: |
1057 | /* Autoidle bit must enabled separately if available */ | |
1058 | if (regbits->autoidle_shift >= 0 && | |
1059 | ddata->cfg.sysc_val & BIT(regbits->autoidle_shift)) { | |
1060 | reg |= 1 << regbits->autoidle_shift; | |
e8639e1c | 1061 | sysc_write_sysconfig(ddata, reg); |
eec26555 TL |
1062 | } |
1063 | ||
5ce8aee8 TL |
1064 | /* Flush posted write */ |
1065 | sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]); | |
1066 | ||
d7f563db TL |
1067 | if (ddata->module_enable_quirk) |
1068 | ddata->module_enable_quirk(ddata); | |
1069 | ||
d59b6056 RQ |
1070 | return 0; |
1071 | } | |
1072 | ||
1073 | static int sysc_best_idle_mode(u32 idlemodes, u32 *best_mode) | |
1074 | { | |
1075 | if (idlemodes & BIT(SYSC_IDLE_SMART_WKUP)) | |
1076 | *best_mode = SYSC_IDLE_SMART_WKUP; | |
1077 | else if (idlemodes & BIT(SYSC_IDLE_SMART)) | |
1078 | *best_mode = SYSC_IDLE_SMART; | |
6ee8241d | 1079 | else if (idlemodes & BIT(SYSC_IDLE_FORCE)) |
d59b6056 RQ |
1080 | *best_mode = SYSC_IDLE_FORCE; |
1081 | else | |
1082 | return -EINVAL; | |
1083 | ||
1084 | return 0; | |
1085 | } | |
1086 | ||
2b2f7def | 1087 | /* Caller needs to manage sysc_clkdm_deny_idle() and sysc_clkdm_allow_idle() */ |
d59b6056 RQ |
1088 | static int sysc_disable_module(struct device *dev) |
1089 | { | |
1090 | struct sysc *ddata; | |
1091 | const struct sysc_regbits *regbits; | |
1092 | u32 reg, idlemodes, best_mode; | |
1093 | int ret; | |
1094 | ||
1095 | ddata = dev_get_drvdata(dev); | |
1096 | if (ddata->offsets[SYSC_SYSCONFIG] == -ENODEV) | |
1097 | return 0; | |
1098 | ||
c7d8669f TL |
1099 | if (ddata->module_disable_quirk) |
1100 | ddata->module_disable_quirk(ddata); | |
1101 | ||
d59b6056 RQ |
1102 | regbits = ddata->cap->regbits; |
1103 | reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]); | |
1104 | ||
1105 | /* Set MIDLE mode */ | |
1106 | idlemodes = ddata->cfg.midlemodes; | |
1107 | if (!idlemodes || regbits->midle_shift < 0) | |
1108 | goto set_sidle; | |
1109 | ||
1110 | ret = sysc_best_idle_mode(idlemodes, &best_mode); | |
1111 | if (ret) { | |
1112 | dev_err(dev, "%s: invalid midlemode\n", __func__); | |
1113 | return ret; | |
1114 | } | |
1115 | ||
93c60483 TL |
1116 | if (ddata->cfg.quirks & (SYSC_QUIRK_SWSUP_MSTANDBY) || |
1117 | ddata->cfg.quirks & (SYSC_QUIRK_FORCE_MSTANDBY)) | |
03856e92 TL |
1118 | best_mode = SYSC_IDLE_FORCE; |
1119 | ||
d59b6056 RQ |
1120 | reg &= ~(SYSC_IDLE_MASK << regbits->midle_shift); |
1121 | reg |= best_mode << regbits->midle_shift; | |
e8639e1c | 1122 | sysc_write_sysconfig(ddata, reg); |
d59b6056 RQ |
1123 | |
1124 | set_sidle: | |
1125 | /* Set SIDLE mode */ | |
1126 | idlemodes = ddata->cfg.sidlemodes; | |
1127 | if (!idlemodes || regbits->sidle_shift < 0) | |
1128 | return 0; | |
1129 | ||
fb685f1c TL |
1130 | if (ddata->cfg.quirks & SYSC_QUIRK_SWSUP_SIDLE) { |
1131 | best_mode = SYSC_IDLE_FORCE; | |
1132 | } else { | |
1133 | ret = sysc_best_idle_mode(idlemodes, &best_mode); | |
1134 | if (ret) { | |
1135 | dev_err(dev, "%s: invalid sidlemode\n", __func__); | |
1136 | return ret; | |
1137 | } | |
d59b6056 RQ |
1138 | } |
1139 | ||
1140 | reg &= ~(SYSC_IDLE_MASK << regbits->sidle_shift); | |
1141 | reg |= best_mode << regbits->sidle_shift; | |
eec26555 TL |
1142 | if (regbits->autoidle_shift >= 0 && |
1143 | ddata->cfg.sysc_val & BIT(regbits->autoidle_shift)) | |
1144 | reg |= 1 << regbits->autoidle_shift; | |
e8639e1c | 1145 | sysc_write_sysconfig(ddata, reg); |
d59b6056 | 1146 | |
5ce8aee8 TL |
1147 | /* Flush posted write */ |
1148 | sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]); | |
1149 | ||
d59b6056 RQ |
1150 | return 0; |
1151 | } | |
1152 | ||
ff43728c TL |
1153 | static int __maybe_unused sysc_runtime_suspend_legacy(struct device *dev, |
1154 | struct sysc *ddata) | |
1155 | { | |
1156 | struct ti_sysc_platform_data *pdata; | |
1157 | int error; | |
1158 | ||
1159 | pdata = dev_get_platdata(ddata->dev); | |
1160 | if (!pdata) | |
1161 | return 0; | |
1162 | ||
1163 | if (!pdata->idle_module) | |
1164 | return -ENODEV; | |
1165 | ||
1166 | error = pdata->idle_module(dev, &ddata->cookie); | |
1167 | if (error) | |
1168 | dev_err(dev, "%s: could not idle: %i\n", | |
1169 | __func__, error); | |
1170 | ||
4345f0dc | 1171 | reset_control_assert(ddata->rsts); |
8383e259 | 1172 | |
ff43728c TL |
1173 | return 0; |
1174 | } | |
1175 | ||
1176 | static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev, | |
1177 | struct sysc *ddata) | |
0eecc636 | 1178 | { |
ef70b0bd | 1179 | struct ti_sysc_platform_data *pdata; |
ff43728c TL |
1180 | int error; |
1181 | ||
1182 | pdata = dev_get_platdata(ddata->dev); | |
1183 | if (!pdata) | |
1184 | return 0; | |
1185 | ||
1186 | if (!pdata->enable_module) | |
1187 | return -ENODEV; | |
1188 | ||
1189 | error = pdata->enable_module(dev, &ddata->cookie); | |
1190 | if (error) | |
1191 | dev_err(dev, "%s: could not enable: %i\n", | |
1192 | __func__, error); | |
1193 | ||
bf59ebbe TK |
1194 | reset_control_deassert(ddata->rsts); |
1195 | ||
ff43728c TL |
1196 | return 0; |
1197 | } | |
1198 | ||
1199 | static int __maybe_unused sysc_runtime_suspend(struct device *dev) | |
1200 | { | |
0eecc636 | 1201 | struct sysc *ddata; |
d878970f | 1202 | int error = 0; |
0eecc636 TL |
1203 | |
1204 | ddata = dev_get_drvdata(dev); | |
1205 | ||
ef70b0bd | 1206 | if (!ddata->enabled) |
0eecc636 TL |
1207 | return 0; |
1208 | ||
2b2f7def TL |
1209 | sysc_clkdm_deny_idle(ddata); |
1210 | ||
ef70b0bd | 1211 | if (ddata->legacy_mode) { |
ff43728c | 1212 | error = sysc_runtime_suspend_legacy(dev, ddata); |
93de83a2 | 1213 | if (error) |
2b2f7def | 1214 | goto err_allow_idle; |
d59b6056 RQ |
1215 | } else { |
1216 | error = sysc_disable_module(dev); | |
1217 | if (error) | |
2b2f7def | 1218 | goto err_allow_idle; |
ef70b0bd TL |
1219 | } |
1220 | ||
d878970f | 1221 | sysc_disable_main_clocks(ddata); |
09dfe581 | 1222 | |
d878970f TL |
1223 | if (sysc_opt_clks_needed(ddata)) |
1224 | sysc_disable_opt_clocks(ddata); | |
0eecc636 | 1225 | |
ef70b0bd TL |
1226 | ddata->enabled = false; |
1227 | ||
2b2f7def | 1228 | err_allow_idle: |
b6036314 TK |
1229 | sysc_clkdm_allow_idle(ddata); |
1230 | ||
4097c9a6 TL |
1231 | reset_control_assert(ddata->rsts); |
1232 | ||
ef70b0bd | 1233 | return error; |
0eecc636 TL |
1234 | } |
1235 | ||
a4a5d493 | 1236 | static int __maybe_unused sysc_runtime_resume(struct device *dev) |
0eecc636 TL |
1237 | { |
1238 | struct sysc *ddata; | |
d878970f | 1239 | int error = 0; |
0eecc636 TL |
1240 | |
1241 | ddata = dev_get_drvdata(dev); | |
1242 | ||
ef70b0bd | 1243 | if (ddata->enabled) |
0eecc636 TL |
1244 | return 0; |
1245 | ||
8383e259 | 1246 | |
2b2f7def TL |
1247 | sysc_clkdm_deny_idle(ddata); |
1248 | ||
d878970f TL |
1249 | if (sysc_opt_clks_needed(ddata)) { |
1250 | error = sysc_enable_opt_clocks(ddata); | |
0eecc636 | 1251 | if (error) |
2b2f7def | 1252 | goto err_allow_idle; |
0eecc636 TL |
1253 | } |
1254 | ||
d878970f TL |
1255 | error = sysc_enable_main_clocks(ddata); |
1256 | if (error) | |
93de83a2 TL |
1257 | goto err_opt_clocks; |
1258 | ||
bf59ebbe TK |
1259 | reset_control_deassert(ddata->rsts); |
1260 | ||
93de83a2 TL |
1261 | if (ddata->legacy_mode) { |
1262 | error = sysc_runtime_resume_legacy(dev, ddata); | |
1263 | if (error) | |
1264 | goto err_main_clocks; | |
d59b6056 RQ |
1265 | } else { |
1266 | error = sysc_enable_module(dev); | |
1267 | if (error) | |
1268 | goto err_main_clocks; | |
93de83a2 | 1269 | } |
d878970f | 1270 | |
ef70b0bd TL |
1271 | ddata->enabled = true; |
1272 | ||
2b2f7def TL |
1273 | sysc_clkdm_allow_idle(ddata); |
1274 | ||
d878970f TL |
1275 | return 0; |
1276 | ||
1277 | err_main_clocks: | |
93de83a2 TL |
1278 | sysc_disable_main_clocks(ddata); |
1279 | err_opt_clocks: | |
d878970f TL |
1280 | if (sysc_opt_clks_needed(ddata)) |
1281 | sysc_disable_opt_clocks(ddata); | |
2b2f7def TL |
1282 | err_allow_idle: |
1283 | sysc_clkdm_allow_idle(ddata); | |
d878970f | 1284 | |
ef70b0bd | 1285 | return error; |
0eecc636 TL |
1286 | } |
1287 | ||
f5e80203 | 1288 | static int __maybe_unused sysc_noirq_suspend(struct device *dev) |
62020f23 TL |
1289 | { |
1290 | struct sysc *ddata; | |
1291 | ||
1292 | ddata = dev_get_drvdata(dev); | |
1293 | ||
a55de412 TL |
1294 | if (ddata->cfg.quirks & |
1295 | (SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_NO_IDLE)) | |
e7420c2d TL |
1296 | return 0; |
1297 | ||
f5e80203 | 1298 | return pm_runtime_force_suspend(dev); |
62020f23 TL |
1299 | } |
1300 | ||
f5e80203 | 1301 | static int __maybe_unused sysc_noirq_resume(struct device *dev) |
62020f23 TL |
1302 | { |
1303 | struct sysc *ddata; | |
1304 | ||
1305 | ddata = dev_get_drvdata(dev); | |
e7420c2d | 1306 | |
a55de412 TL |
1307 | if (ddata->cfg.quirks & |
1308 | (SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_NO_IDLE)) | |
e7420c2d TL |
1309 | return 0; |
1310 | ||
f5e80203 | 1311 | return pm_runtime_force_resume(dev); |
0eecc636 TL |
1312 | } |
1313 | ||
1314 | static const struct dev_pm_ops sysc_pm_ops = { | |
e7420c2d | 1315 | SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_noirq_suspend, sysc_noirq_resume) |
0eecc636 TL |
1316 | SET_RUNTIME_PM_OPS(sysc_runtime_suspend, |
1317 | sysc_runtime_resume, | |
1318 | NULL) | |
1319 | }; | |
1320 | ||
a885f0fe TL |
1321 | /* Module revision register based quirks */ |
1322 | struct sysc_revision_quirk { | |
1323 | const char *name; | |
1324 | u32 base; | |
1325 | int rev_offset; | |
1326 | int sysc_offset; | |
1327 | int syss_offset; | |
1328 | u32 revision; | |
1329 | u32 revision_mask; | |
1330 | u32 quirks; | |
1331 | }; | |
1332 | ||
1333 | #define SYSC_QUIRK(optname, optbase, optrev, optsysc, optsyss, \ | |
1334 | optrev_val, optrevmask, optquirkmask) \ | |
1335 | { \ | |
1336 | .name = (optname), \ | |
1337 | .base = (optbase), \ | |
1338 | .rev_offset = (optrev), \ | |
1339 | .sysc_offset = (optsysc), \ | |
1340 | .syss_offset = (optsyss), \ | |
1341 | .revision = (optrev_val), \ | |
1342 | .revision_mask = (optrevmask), \ | |
1343 | .quirks = (optquirkmask), \ | |
1344 | } | |
1345 | ||
1346 | static const struct sysc_revision_quirk sysc_revision_quirks[] = { | |
1347 | /* These drivers need to be fixed to not use pm_runtime_irq_safe() */ | |
3a3d802b | 1348 | SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffff00ff, |
09dfe581 | 1349 | SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_OPT_CLKS_IN_RESET), |
a885f0fe TL |
1350 | SYSC_QUIRK("sham", 0, 0x100, 0x110, 0x114, 0x40000c03, 0xffffffff, |
1351 | SYSC_QUIRK_LEGACY_IDLE), | |
590e15c7 | 1352 | SYSC_QUIRK("smartreflex", 0, -ENODEV, 0x24, -ENODEV, 0x00000000, 0xffffffff, |
a885f0fe | 1353 | SYSC_QUIRK_LEGACY_IDLE), |
590e15c7 | 1354 | SYSC_QUIRK("smartreflex", 0, -ENODEV, 0x38, -ENODEV, 0x00000000, 0xffffffff, |
a885f0fe | 1355 | SYSC_QUIRK_LEGACY_IDLE), |
b6a53c4c TL |
1356 | SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x00000046, 0xffffffff, |
1357 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_LEGACY_IDLE), | |
a885f0fe | 1358 | SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x00000052, 0xffffffff, |
b6a53c4c | 1359 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_LEGACY_IDLE), |
d708bb14 | 1360 | /* Uarts on omap4 and later */ |
b82beef5 | 1361 | SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x50411e03, 0xffff00ff, |
b4a9a7a3 | 1362 | SYSC_QUIRK_SWSUP_SIDLE_ACT | SYSC_QUIRK_LEGACY_IDLE), |
b82beef5 | 1363 | SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x47422e03, 0xffffffff, |
b4a9a7a3 | 1364 | SYSC_QUIRK_SWSUP_SIDLE_ACT | SYSC_QUIRK_LEGACY_IDLE), |
7e27e5d0 | 1365 | |
a54275f4 | 1366 | /* Quirks that need to be set based on the module address */ |
590e15c7 | 1367 | SYSC_QUIRK("mcpdm", 0x40132000, 0, 0x10, -ENODEV, 0x50000800, 0xffffffff, |
a54275f4 TL |
1368 | SYSC_QUIRK_EXT_OPT_CLOCK | SYSC_QUIRK_NO_RESET_ON_INIT | |
1369 | SYSC_QUIRK_SWSUP_SIDLE), | |
1370 | ||
4e23be47 | 1371 | /* Quirks that need to be set based on detected module */ |
590e15c7 | 1372 | SYSC_QUIRK("aess", 0, 0, 0x10, -ENODEV, 0x40000000, 0xffffffff, |
020003f7 | 1373 | SYSC_MODULE_QUIRK_AESS), |
590e15c7 | 1374 | SYSC_QUIRK("dcan", 0x48480000, 0x20, -ENODEV, -ENODEV, 0xa3170504, 0xffffffff, |
94f63457 | 1375 | SYSC_QUIRK_CLKDM_NOAUTO), |
77dfece2 | 1376 | SYSC_QUIRK("dss", 0x4832a000, 0, 0x10, 0x14, 0x00000020, 0xffffffff, |
7324a7a0 | 1377 | SYSC_QUIRK_OPT_CLKS_IN_RESET | SYSC_MODULE_QUIRK_DSS_RESET), |
77dfece2 | 1378 | SYSC_QUIRK("dss", 0x58000000, 0, -ENODEV, 0x14, 0x00000040, 0xffffffff, |
7324a7a0 | 1379 | SYSC_QUIRK_OPT_CLKS_IN_RESET | SYSC_MODULE_QUIRK_DSS_RESET), |
77dfece2 | 1380 | SYSC_QUIRK("dss", 0x58000000, 0, -ENODEV, 0x14, 0x00000061, 0xffffffff, |
7324a7a0 | 1381 | SYSC_QUIRK_OPT_CLKS_IN_RESET | SYSC_MODULE_QUIRK_DSS_RESET), |
590e15c7 | 1382 | SYSC_QUIRK("dwc3", 0x48880000, 0, 0x10, -ENODEV, 0x500a0200, 0xffffffff, |
94f63457 | 1383 | SYSC_QUIRK_CLKDM_NOAUTO), |
590e15c7 | 1384 | SYSC_QUIRK("dwc3", 0x488c0000, 0, 0x10, -ENODEV, 0x500a0200, 0xffffffff, |
94f63457 | 1385 | SYSC_QUIRK_CLKDM_NOAUTO), |
cfeeea60 TL |
1386 | SYSC_QUIRK("gpmc", 0, 0, 0x10, 0x14, 0x00000060, 0xffffffff, |
1387 | SYSC_QUIRK_GPMC_DEBUG), | |
77dfece2 TL |
1388 | SYSC_QUIRK("hdmi", 0, 0, 0x10, -ENODEV, 0x50030200, 0xffffffff, |
1389 | SYSC_QUIRK_OPT_CLKS_NEEDED), | |
4e23be47 | 1390 | SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff, |
e275d210 | 1391 | SYSC_MODULE_QUIRK_HDQ1W | SYSC_MODULE_QUIRK_ENA_RESETDONE), |
4e23be47 | 1392 | SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x0000000a, 0xffffffff, |
e275d210 | 1393 | SYSC_MODULE_QUIRK_HDQ1W | SYSC_MODULE_QUIRK_ENA_RESETDONE), |
4e23be47 | 1394 | SYSC_QUIRK("i2c", 0, 0, 0x20, 0x10, 0x00000036, 0x000000ff, |
e275d210 | 1395 | SYSC_MODULE_QUIRK_I2C | SYSC_MODULE_QUIRK_ENA_RESETDONE), |
4e23be47 | 1396 | SYSC_QUIRK("i2c", 0, 0, 0x20, 0x10, 0x0000003c, 0x000000ff, |
e275d210 | 1397 | SYSC_MODULE_QUIRK_I2C | SYSC_MODULE_QUIRK_ENA_RESETDONE), |
4e23be47 | 1398 | SYSC_QUIRK("i2c", 0, 0, 0x20, 0x10, 0x00000040, 0x000000ff, |
e275d210 | 1399 | SYSC_MODULE_QUIRK_I2C | SYSC_MODULE_QUIRK_ENA_RESETDONE), |
4e23be47 | 1400 | SYSC_QUIRK("i2c", 0, 0, 0x10, 0x90, 0x5040000a, 0xfffff0f0, |
e275d210 | 1401 | SYSC_MODULE_QUIRK_I2C | SYSC_MODULE_QUIRK_ENA_RESETDONE), |
590e15c7 TL |
1402 | SYSC_QUIRK("gpu", 0x50000000, 0x14, -ENODEV, -ENODEV, 0x00010201, 0xffffffff, 0), |
1403 | SYSC_QUIRK("gpu", 0x50000000, 0xfe00, 0xfe10, -ENODEV, 0x40000000 , 0xffffffff, | |
d7f563db | 1404 | SYSC_MODULE_QUIRK_SGX), |
aef067e8 TL |
1405 | SYSC_QUIRK("lcdc", 0, 0, 0x54, -ENODEV, 0x4f201000, 0xffffffff, |
1406 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), | |
e8639e1c TL |
1407 | SYSC_QUIRK("rtc", 0, 0x74, 0x78, -ENODEV, 0x4eb01908, 0xffff00f0, |
1408 | SYSC_MODULE_QUIRK_RTC_UNLOCK), | |
25bfaaa7 TL |
1409 | SYSC_QUIRK("tptc", 0, 0, 0x10, -ENODEV, 0x40006c00, 0xffffefff, |
1410 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), | |
1411 | SYSC_QUIRK("tptc", 0, 0, -ENODEV, -ENODEV, 0x40007c00, 0xffffffff, | |
1412 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), | |
4254632d TL |
1413 | SYSC_QUIRK("usb_host_hs", 0, 0, 0x10, 0x14, 0x50700100, 0xffffffff, |
1414 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), | |
1415 | SYSC_QUIRK("usb_host_hs", 0, 0, 0x10, -ENODEV, 0x50700101, 0xffffffff, | |
1416 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), | |
03856e92 TL |
1417 | SYSC_QUIRK("usb_otg_hs", 0, 0x400, 0x404, 0x408, 0x00000050, |
1418 | 0xffffffff, SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), | |
590e15c7 | 1419 | SYSC_QUIRK("usb_otg_hs", 0, 0, 0x10, -ENODEV, 0x4ea2080d, 0xffffffff, |
1819ef2e | 1420 | SYSC_QUIRK_SWSUP_SIDLE | SYSC_QUIRK_SWSUP_MSTANDBY), |
4e23be47 TL |
1421 | SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0500, 0xfffff0f0, |
1422 | SYSC_MODULE_QUIRK_WDT), | |
b2745d92 SA |
1423 | /* PRUSS on am3, am4 and am5 */ |
1424 | SYSC_QUIRK("pruss", 0, 0x26000, 0x26004, -ENODEV, 0x47000000, 0xff000000, | |
1425 | SYSC_MODULE_QUIRK_PRUSS), | |
c7d8669f TL |
1426 | /* Watchdog on am3 and am4 */ |
1427 | SYSC_QUIRK("wdt", 0x44e35000, 0, 0x10, 0x14, 0x502a0500, 0xfffff0f0, | |
1428 | SYSC_MODULE_QUIRK_WDT | SYSC_QUIRK_SWSUP_SIDLE), | |
4e23be47 | 1429 | |
dc4c85ea | 1430 | #ifdef DEBUG |
590e15c7 TL |
1431 | SYSC_QUIRK("adc", 0, 0, 0x10, -ENODEV, 0x47300001, 0xffffffff, 0), |
1432 | SYSC_QUIRK("atl", 0, 0, -ENODEV, -ENODEV, 0x0a070100, 0xffffffff, 0), | |
1433 | SYSC_QUIRK("cm", 0, 0, -ENODEV, -ENODEV, 0x40000301, 0xffffffff, 0), | |
1434 | SYSC_QUIRK("control", 0, 0, 0x10, -ENODEV, 0x40000900, 0xffffffff, 0), | |
1ba30693 | 1435 | SYSC_QUIRK("cpgmac", 0, 0x1200, 0x1208, 0x1204, 0x4edb1902, |
23731eac | 1436 | 0xffff00f0, 0), |
590e15c7 TL |
1437 | SYSC_QUIRK("dcan", 0, 0x20, -ENODEV, -ENODEV, 0xa3170504, 0xffffffff, 0), |
1438 | SYSC_QUIRK("dcan", 0, 0x20, -ENODEV, -ENODEV, 0x4edb1902, 0xffffffff, 0), | |
77dfece2 TL |
1439 | SYSC_QUIRK("dispc", 0x4832a400, 0, 0x10, 0x14, 0x00000030, 0xffffffff, 0), |
1440 | SYSC_QUIRK("dispc", 0x58001000, 0, 0x10, 0x14, 0x00000040, 0xffffffff, 0), | |
1441 | SYSC_QUIRK("dispc", 0x58001000, 0, 0x10, 0x14, 0x00000051, 0xffffffff, 0), | |
590e15c7 | 1442 | SYSC_QUIRK("dmic", 0, 0, 0x10, -ENODEV, 0x50010000, 0xffffffff, 0), |
77dfece2 TL |
1443 | SYSC_QUIRK("dsi", 0x58004000, 0, 0x10, 0x14, 0x00000030, 0xffffffff, 0), |
1444 | SYSC_QUIRK("dsi", 0x58005000, 0, 0x10, 0x14, 0x00000030, 0xffffffff, 0), | |
1445 | SYSC_QUIRK("dsi", 0x58005000, 0, 0x10, 0x14, 0x00000040, 0xffffffff, 0), | |
1446 | SYSC_QUIRK("dsi", 0x58009000, 0, 0x10, 0x14, 0x00000040, 0xffffffff, 0), | |
590e15c7 | 1447 | SYSC_QUIRK("dwc3", 0, 0, 0x10, -ENODEV, 0x500a0200, 0xffffffff, 0), |
7edd00f7 TL |
1448 | SYSC_QUIRK("d2d", 0x4a0b6000, 0, 0x10, 0x14, 0x00000010, 0xffffffff, 0), |
1449 | SYSC_QUIRK("d2d", 0x4a0cd000, 0, 0x10, 0x14, 0x00000010, 0xffffffff, 0), | |
590e15c7 TL |
1450 | SYSC_QUIRK("epwmss", 0, 0, 0x4, -ENODEV, 0x47400001, 0xffffffff, 0), |
1451 | SYSC_QUIRK("gpu", 0, 0x1fc00, 0x1fc10, -ENODEV, 0, 0, 0), | |
1452 | SYSC_QUIRK("gpu", 0, 0xfe00, 0xfe10, -ENODEV, 0x40000000 , 0xffffffff, 0), | |
77dfece2 | 1453 | SYSC_QUIRK("hdmi", 0, 0, 0x10, -ENODEV, 0x50031d00, 0xffffffff, 0), |
dc4c85ea | 1454 | SYSC_QUIRK("hsi", 0, 0, 0x10, 0x14, 0x50043101, 0xffffffff, 0), |
590e15c7 | 1455 | SYSC_QUIRK("iss", 0, 0, 0x10, -ENODEV, 0x40000101, 0xffffffff, 0), |
590e15c7 TL |
1456 | SYSC_QUIRK("mcasp", 0, 0, 0x4, -ENODEV, 0x44306302, 0xffffffff, 0), |
1457 | SYSC_QUIRK("mcasp", 0, 0, 0x4, -ENODEV, 0x44307b02, 0xffffffff, 0), | |
1458 | SYSC_QUIRK("mcbsp", 0, -ENODEV, 0x8c, -ENODEV, 0, 0, 0), | |
1459 | SYSC_QUIRK("mcspi", 0, 0, 0x10, -ENODEV, 0x40300a0b, 0xffff00ff, 0), | |
1ba30693 | 1460 | SYSC_QUIRK("mcspi", 0, 0, 0x110, 0x114, 0x40300a0b, 0xffffffff, 0), |
590e15c7 TL |
1461 | SYSC_QUIRK("mailbox", 0, 0, 0x10, -ENODEV, 0x00000400, 0xffffffff, 0), |
1462 | SYSC_QUIRK("m3", 0, 0, -ENODEV, -ENODEV, 0x5f580105, 0x0fff0f00, 0), | |
c6eb4af3 | 1463 | SYSC_QUIRK("ocp2scp", 0, 0, 0x10, 0x14, 0x50060005, 0xfffffff0, 0), |
590e15c7 TL |
1464 | SYSC_QUIRK("ocp2scp", 0, 0, -ENODEV, -ENODEV, 0x50060007, 0xffffffff, 0), |
1465 | SYSC_QUIRK("padconf", 0, 0, 0x10, -ENODEV, 0x4fff0800, 0xffffffff, 0), | |
1466 | SYSC_QUIRK("padconf", 0, 0, -ENODEV, -ENODEV, 0x40001100, 0xffffffff, 0), | |
1467 | SYSC_QUIRK("prcm", 0, 0, -ENODEV, -ENODEV, 0x40000100, 0xffffffff, 0), | |
1468 | SYSC_QUIRK("prcm", 0, 0, -ENODEV, -ENODEV, 0x00004102, 0xffffffff, 0), | |
1469 | SYSC_QUIRK("prcm", 0, 0, -ENODEV, -ENODEV, 0x40000400, 0xffffffff, 0), | |
77dfece2 TL |
1470 | SYSC_QUIRK("rfbi", 0x4832a800, 0, 0x10, 0x14, 0x00000010, 0xffffffff, 0), |
1471 | SYSC_QUIRK("rfbi", 0x58002000, 0, 0x10, 0x14, 0x00000010, 0xffffffff, 0), | |
590e15c7 TL |
1472 | SYSC_QUIRK("scm", 0, 0, 0x10, -ENODEV, 0x40000900, 0xffffffff, 0), |
1473 | SYSC_QUIRK("scm", 0, 0, -ENODEV, -ENODEV, 0x4e8b0100, 0xffffffff, 0), | |
1474 | SYSC_QUIRK("scm", 0, 0, -ENODEV, -ENODEV, 0x4f000100, 0xffffffff, 0), | |
1475 | SYSC_QUIRK("scm", 0, 0, -ENODEV, -ENODEV, 0x40000900, 0xffffffff, 0), | |
1476 | SYSC_QUIRK("scrm", 0, 0, -ENODEV, -ENODEV, 0x00000010, 0xffffffff, 0), | |
1477 | SYSC_QUIRK("sdio", 0, 0, 0x10, -ENODEV, 0x40202301, 0xffff0ff0, 0), | |
1ba30693 | 1478 | SYSC_QUIRK("sdio", 0, 0x2fc, 0x110, 0x114, 0x31010000, 0xffffffff, 0), |
40d9f912 | 1479 | SYSC_QUIRK("sdma", 0, 0, 0x2c, 0x28, 0x00010900, 0xffffffff, 0), |
590e15c7 TL |
1480 | SYSC_QUIRK("slimbus", 0, 0, 0x10, -ENODEV, 0x40000902, 0xffffffff, 0), |
1481 | SYSC_QUIRK("slimbus", 0, 0, 0x10, -ENODEV, 0x40002903, 0xffffffff, 0), | |
1482 | SYSC_QUIRK("spinlock", 0, 0, 0x10, -ENODEV, 0x50020000, 0xffffffff, 0), | |
1483 | SYSC_QUIRK("rng", 0, 0x1fe0, 0x1fe4, -ENODEV, 0x00000020, 0xffffffff, 0), | |
1a542811 TL |
1484 | SYSC_QUIRK("timer", 0, 0, 0x10, 0x14, 0x00000013, 0xffffffff, 0), |
1485 | SYSC_QUIRK("timer", 0, 0, 0x10, 0x14, 0x00000015, 0xffffffff, 0), | |
1486 | /* Some timers on omap4 and later */ | |
1487 | SYSC_QUIRK("timer", 0, 0, 0x10, -ENODEV, 0x50002100, 0xffffffff, 0), | |
1488 | SYSC_QUIRK("timer", 0, 0, 0x10, -ENODEV, 0x4fff1301, 0xffff00ff, 0), | |
1489 | SYSC_QUIRK("timer32k", 0, 0, 0x4, -ENODEV, 0x00000040, 0xffffffff, 0), | |
1490 | SYSC_QUIRK("timer32k", 0, 0, 0x4, -ENODEV, 0x00000011, 0xffffffff, 0), | |
590e15c7 | 1491 | SYSC_QUIRK("timer32k", 0, 0, 0x4, -ENODEV, 0x00000060, 0xffffffff, 0), |
25bfaaa7 | 1492 | SYSC_QUIRK("tpcc", 0, 0, -ENODEV, -ENODEV, 0x40014c00, 0xffffffff, 0), |
dc4c85ea | 1493 | SYSC_QUIRK("usbhstll", 0, 0, 0x10, 0x14, 0x00000004, 0xffffffff, 0), |
f0106700 | 1494 | SYSC_QUIRK("usbhstll", 0, 0, 0x10, 0x14, 0x00000008, 0xffffffff, 0), |
77dfece2 | 1495 | SYSC_QUIRK("venc", 0x58003000, 0, -ENODEV, -ENODEV, 0x00000002, 0xffffffff, 0), |
590e15c7 | 1496 | SYSC_QUIRK("vfpe", 0, 0, 0x104, -ENODEV, 0x4d001200, 0xffffffff, 0), |
dc4c85ea | 1497 | #endif |
a885f0fe TL |
1498 | }; |
1499 | ||
42b9c5c9 TL |
1500 | /* |
1501 | * Early quirks based on module base and register offsets only that are | |
1502 | * needed before the module revision can be read | |
1503 | */ | |
1504 | static void sysc_init_early_quirks(struct sysc *ddata) | |
1505 | { | |
1506 | const struct sysc_revision_quirk *q; | |
1507 | int i; | |
1508 | ||
1509 | for (i = 0; i < ARRAY_SIZE(sysc_revision_quirks); i++) { | |
1510 | q = &sysc_revision_quirks[i]; | |
1511 | ||
1512 | if (!q->base) | |
1513 | continue; | |
1514 | ||
1515 | if (q->base != ddata->module_pa) | |
1516 | continue; | |
1517 | ||
590e15c7 | 1518 | if (q->rev_offset != ddata->offsets[SYSC_REVISION]) |
42b9c5c9 TL |
1519 | continue; |
1520 | ||
590e15c7 | 1521 | if (q->sysc_offset != ddata->offsets[SYSC_SYSCONFIG]) |
42b9c5c9 TL |
1522 | continue; |
1523 | ||
590e15c7 | 1524 | if (q->syss_offset != ddata->offsets[SYSC_SYSSTATUS]) |
42b9c5c9 TL |
1525 | continue; |
1526 | ||
1527 | ddata->name = q->name; | |
1528 | ddata->cfg.quirks |= q->quirks; | |
1529 | } | |
1530 | } | |
1531 | ||
1532 | /* Quirks that also consider the revision register value */ | |
a885f0fe TL |
1533 | static void sysc_init_revision_quirks(struct sysc *ddata) |
1534 | { | |
1535 | const struct sysc_revision_quirk *q; | |
1536 | int i; | |
1537 | ||
1538 | for (i = 0; i < ARRAY_SIZE(sysc_revision_quirks); i++) { | |
1539 | q = &sysc_revision_quirks[i]; | |
1540 | ||
1541 | if (q->base && q->base != ddata->module_pa) | |
1542 | continue; | |
1543 | ||
590e15c7 | 1544 | if (q->rev_offset != ddata->offsets[SYSC_REVISION]) |
a885f0fe TL |
1545 | continue; |
1546 | ||
590e15c7 | 1547 | if (q->sysc_offset != ddata->offsets[SYSC_SYSCONFIG]) |
a885f0fe TL |
1548 | continue; |
1549 | ||
590e15c7 | 1550 | if (q->syss_offset != ddata->offsets[SYSC_SYSSTATUS]) |
a885f0fe TL |
1551 | continue; |
1552 | ||
1553 | if (q->revision == ddata->revision || | |
1554 | (q->revision & q->revision_mask) == | |
1555 | (ddata->revision & q->revision_mask)) { | |
1556 | ddata->name = q->name; | |
1557 | ddata->cfg.quirks |= q->quirks; | |
1558 | } | |
1559 | } | |
1560 | } | |
1561 | ||
7324a7a0 TL |
1562 | /* |
1563 | * DSS needs dispc outputs disabled to reset modules. Returns mask of | |
1564 | * enabled DSS interrupts. Eventually we may be able to do this on | |
1565 | * dispc init rather than top-level DSS init. | |
1566 | */ | |
1567 | static u32 sysc_quirk_dispc(struct sysc *ddata, int dispc_offset, | |
1568 | bool disable) | |
1569 | { | |
1570 | bool lcd_en, digit_en, lcd2_en = false, lcd3_en = false; | |
1571 | const int lcd_en_mask = BIT(0), digit_en_mask = BIT(1); | |
1572 | int manager_count; | |
085bc0e5 | 1573 | bool framedonetv_irq = true; |
7324a7a0 TL |
1574 | u32 val, irq_mask = 0; |
1575 | ||
1576 | switch (sysc_soc->soc) { | |
1577 | case SOC_2420 ... SOC_3630: | |
1578 | manager_count = 2; | |
1579 | framedonetv_irq = false; | |
1580 | break; | |
1581 | case SOC_4430 ... SOC_4470: | |
1582 | manager_count = 3; | |
1583 | break; | |
1584 | case SOC_5430: | |
1585 | case SOC_DRA7: | |
1586 | manager_count = 4; | |
1587 | break; | |
1588 | case SOC_AM4: | |
1589 | manager_count = 1; | |
085bc0e5 | 1590 | framedonetv_irq = false; |
7324a7a0 TL |
1591 | break; |
1592 | case SOC_UNKNOWN: | |
1593 | default: | |
1594 | return 0; | |
1595 | }; | |
1596 | ||
1597 | /* Remap the whole module range to be able to reset dispc outputs */ | |
1598 | devm_iounmap(ddata->dev, ddata->module_va); | |
1599 | ddata->module_va = devm_ioremap(ddata->dev, | |
1600 | ddata->module_pa, | |
1601 | ddata->module_size); | |
1602 | if (!ddata->module_va) | |
1603 | return -EIO; | |
1604 | ||
1605 | /* DISP_CONTROL */ | |
1606 | val = sysc_read(ddata, dispc_offset + 0x40); | |
1607 | lcd_en = val & lcd_en_mask; | |
1608 | digit_en = val & digit_en_mask; | |
1609 | if (lcd_en) | |
1610 | irq_mask |= BIT(0); /* FRAMEDONE */ | |
1611 | if (digit_en) { | |
1612 | if (framedonetv_irq) | |
1613 | irq_mask |= BIT(24); /* FRAMEDONETV */ | |
1614 | else | |
1615 | irq_mask |= BIT(2) | BIT(3); /* EVSYNC bits */ | |
1616 | } | |
1617 | if (disable & (lcd_en | digit_en)) | |
1618 | sysc_write(ddata, dispc_offset + 0x40, | |
1619 | val & ~(lcd_en_mask | digit_en_mask)); | |
1620 | ||
1621 | if (manager_count <= 2) | |
1622 | return irq_mask; | |
1623 | ||
1624 | /* DISPC_CONTROL2 */ | |
1625 | val = sysc_read(ddata, dispc_offset + 0x238); | |
1626 | lcd2_en = val & lcd_en_mask; | |
1627 | if (lcd2_en) | |
1628 | irq_mask |= BIT(22); /* FRAMEDONE2 */ | |
1629 | if (disable && lcd2_en) | |
1630 | sysc_write(ddata, dispc_offset + 0x238, | |
1631 | val & ~lcd_en_mask); | |
1632 | ||
1633 | if (manager_count <= 3) | |
1634 | return irq_mask; | |
1635 | ||
1636 | /* DISPC_CONTROL3 */ | |
1637 | val = sysc_read(ddata, dispc_offset + 0x848); | |
1638 | lcd3_en = val & lcd_en_mask; | |
1639 | if (lcd3_en) | |
1640 | irq_mask |= BIT(30); /* FRAMEDONE3 */ | |
1641 | if (disable && lcd3_en) | |
1642 | sysc_write(ddata, dispc_offset + 0x848, | |
1643 | val & ~lcd_en_mask); | |
1644 | ||
1645 | return irq_mask; | |
1646 | } | |
1647 | ||
1648 | /* DSS needs child outputs disabled and SDI registers cleared for reset */ | |
1649 | static void sysc_pre_reset_quirk_dss(struct sysc *ddata) | |
1650 | { | |
1651 | const int dispc_offset = 0x1000; | |
1652 | int error; | |
1653 | u32 irq_mask, val; | |
1654 | ||
1655 | /* Get enabled outputs */ | |
1656 | irq_mask = sysc_quirk_dispc(ddata, dispc_offset, false); | |
1657 | if (!irq_mask) | |
1658 | return; | |
1659 | ||
1660 | /* Clear IRQSTATUS */ | |
69e60903 | 1661 | sysc_write(ddata, dispc_offset + 0x18, irq_mask); |
7324a7a0 TL |
1662 | |
1663 | /* Disable outputs */ | |
1664 | val = sysc_quirk_dispc(ddata, dispc_offset, true); | |
1665 | ||
1666 | /* Poll IRQSTATUS */ | |
1667 | error = readl_poll_timeout(ddata->module_va + dispc_offset + 0x18, | |
1668 | val, val != irq_mask, 100, 50); | |
1669 | if (error) | |
1670 | dev_warn(ddata->dev, "%s: timed out %08x !+ %08x\n", | |
1671 | __func__, val, irq_mask); | |
1672 | ||
1673 | if (sysc_soc->soc == SOC_3430) { | |
1674 | /* Clear DSS_SDI_CONTROL */ | |
69e60903 | 1675 | sysc_write(ddata, 0x44, 0); |
7324a7a0 TL |
1676 | |
1677 | /* Clear DSS_PLL_CONTROL */ | |
69e60903 | 1678 | sysc_write(ddata, 0x48, 0); |
7324a7a0 TL |
1679 | } |
1680 | ||
1681 | /* Clear DSS_CONTROL to switch DSS clock sources to PRCM if not */ | |
69e60903 | 1682 | sysc_write(ddata, 0x40, 0); |
7324a7a0 TL |
1683 | } |
1684 | ||
4e23be47 | 1685 | /* 1-wire needs module's internal clocks enabled for reset */ |
aec551c7 | 1686 | static void sysc_pre_reset_quirk_hdq1w(struct sysc *ddata) |
4e23be47 TL |
1687 | { |
1688 | int offset = 0x0c; /* HDQ_CTRL_STATUS */ | |
1689 | u16 val; | |
1690 | ||
1691 | val = sysc_read(ddata, offset); | |
1692 | val |= BIT(5); | |
1693 | sysc_write(ddata, offset, val); | |
1694 | } | |
1695 | ||
020003f7 TL |
1696 | /* AESS (Audio Engine SubSystem) needs autogating set after enable */ |
1697 | static void sysc_module_enable_quirk_aess(struct sysc *ddata) | |
1698 | { | |
1699 | int offset = 0x7c; /* AESS_AUTO_GATING_ENABLE */ | |
1700 | ||
1701 | sysc_write(ddata, offset, 1); | |
1702 | } | |
1703 | ||
e64c021f | 1704 | /* I2C needs to be disabled for reset */ |
4e23be47 TL |
1705 | static void sysc_clk_quirk_i2c(struct sysc *ddata, bool enable) |
1706 | { | |
1707 | int offset; | |
1708 | u16 val; | |
1709 | ||
1710 | /* I2C_CON, omap2/3 is different from omap4 and later */ | |
1711 | if ((ddata->revision & 0xffffff00) == 0x001f0000) | |
1712 | offset = 0x24; | |
1713 | else | |
1714 | offset = 0xa4; | |
1715 | ||
1716 | /* I2C_EN */ | |
1717 | val = sysc_read(ddata, offset); | |
1718 | if (enable) | |
1719 | val |= BIT(15); | |
1720 | else | |
1721 | val &= ~BIT(15); | |
1722 | sysc_write(ddata, offset, val); | |
1723 | } | |
1724 | ||
e64c021f | 1725 | static void sysc_pre_reset_quirk_i2c(struct sysc *ddata) |
4e23be47 | 1726 | { |
e64c021f | 1727 | sysc_clk_quirk_i2c(ddata, false); |
4e23be47 TL |
1728 | } |
1729 | ||
e64c021f | 1730 | static void sysc_post_reset_quirk_i2c(struct sysc *ddata) |
4e23be47 | 1731 | { |
e64c021f | 1732 | sysc_clk_quirk_i2c(ddata, true); |
4e23be47 TL |
1733 | } |
1734 | ||
e8639e1c TL |
1735 | /* RTC on am3 and 4 needs to be unlocked and locked for sysconfig */ |
1736 | static void sysc_quirk_rtc(struct sysc *ddata, bool lock) | |
1737 | { | |
1738 | u32 val, kick0_val = 0, kick1_val = 0; | |
1739 | unsigned long flags; | |
1740 | int error; | |
1741 | ||
1742 | if (!lock) { | |
1743 | kick0_val = 0x83e70b13; | |
1744 | kick1_val = 0x95a4f1e0; | |
1745 | } | |
1746 | ||
1747 | local_irq_save(flags); | |
1748 | /* RTC_STATUS BUSY bit may stay active for 1/32768 seconds (~30 usec) */ | |
afe6f1ee TL |
1749 | error = readl_poll_timeout_atomic(ddata->module_va + 0x44, val, |
1750 | !(val & BIT(0)), 100, 50); | |
e8639e1c TL |
1751 | if (error) |
1752 | dev_warn(ddata->dev, "rtc busy timeout\n"); | |
1753 | /* Now we have ~15 microseconds to read/write various registers */ | |
1754 | sysc_write(ddata, 0x6c, kick0_val); | |
1755 | sysc_write(ddata, 0x70, kick1_val); | |
1756 | local_irq_restore(flags); | |
1757 | } | |
1758 | ||
1759 | static void sysc_module_unlock_quirk_rtc(struct sysc *ddata) | |
1760 | { | |
1761 | sysc_quirk_rtc(ddata, false); | |
1762 | } | |
1763 | ||
1764 | static void sysc_module_lock_quirk_rtc(struct sysc *ddata) | |
1765 | { | |
1766 | sysc_quirk_rtc(ddata, true); | |
1767 | } | |
1768 | ||
d7f563db TL |
1769 | /* 36xx SGX needs a quirk for to bypass OCP IPG interrupt logic */ |
1770 | static void sysc_module_enable_quirk_sgx(struct sysc *ddata) | |
1771 | { | |
1772 | int offset = 0xff08; /* OCP_DEBUG_CONFIG */ | |
1773 | u32 val = BIT(31); /* THALIA_INT_BYPASS */ | |
1774 | ||
1775 | sysc_write(ddata, offset, val); | |
1776 | } | |
1777 | ||
4e23be47 TL |
1778 | /* Watchdog timer needs a disable sequence after reset */ |
1779 | static void sysc_reset_done_quirk_wdt(struct sysc *ddata) | |
1780 | { | |
1781 | int wps, spr, error; | |
1782 | u32 val; | |
1783 | ||
1784 | wps = 0x34; | |
1785 | spr = 0x48; | |
1786 | ||
1787 | sysc_write(ddata, spr, 0xaaaa); | |
1788 | error = readl_poll_timeout(ddata->module_va + wps, val, | |
1789 | !(val & 0x10), 100, | |
1790 | MAX_MODULE_SOFTRESET_WAIT); | |
1791 | if (error) | |
c7d8669f | 1792 | dev_warn(ddata->dev, "wdt disable step1 failed\n"); |
4e23be47 | 1793 | |
c7d8669f | 1794 | sysc_write(ddata, spr, 0x5555); |
4e23be47 TL |
1795 | error = readl_poll_timeout(ddata->module_va + wps, val, |
1796 | !(val & 0x10), 100, | |
1797 | MAX_MODULE_SOFTRESET_WAIT); | |
1798 | if (error) | |
c7d8669f | 1799 | dev_warn(ddata->dev, "wdt disable step2 failed\n"); |
4e23be47 TL |
1800 | } |
1801 | ||
b2745d92 SA |
1802 | /* PRUSS needs to set MSTANDBY_INIT inorder to idle properly */ |
1803 | static void sysc_module_disable_quirk_pruss(struct sysc *ddata) | |
1804 | { | |
1805 | u32 reg; | |
1806 | ||
1807 | reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]); | |
1808 | reg |= SYSC_PRUSS_STANDBY_INIT; | |
1809 | sysc_write(ddata, ddata->offsets[SYSC_SYSCONFIG], reg); | |
1810 | } | |
1811 | ||
4e23be47 TL |
1812 | static void sysc_init_module_quirks(struct sysc *ddata) |
1813 | { | |
1814 | if (ddata->legacy_mode || !ddata->name) | |
1815 | return; | |
1816 | ||
1817 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_HDQ1W) { | |
e64c021f | 1818 | ddata->pre_reset_quirk = sysc_pre_reset_quirk_hdq1w; |
4e23be47 TL |
1819 | |
1820 | return; | |
1821 | } | |
1822 | ||
cfeeea60 TL |
1823 | #ifdef CONFIG_OMAP_GPMC_DEBUG |
1824 | if (ddata->cfg.quirks & SYSC_QUIRK_GPMC_DEBUG) { | |
1825 | ddata->cfg.quirks |= SYSC_QUIRK_NO_RESET_ON_INIT; | |
1826 | ||
1827 | return; | |
1828 | } | |
1829 | #endif | |
1830 | ||
4e23be47 | 1831 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_I2C) { |
e64c021f TL |
1832 | ddata->pre_reset_quirk = sysc_pre_reset_quirk_i2c; |
1833 | ddata->post_reset_quirk = sysc_post_reset_quirk_i2c; | |
4e23be47 TL |
1834 | |
1835 | return; | |
1836 | } | |
1837 | ||
020003f7 TL |
1838 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_AESS) |
1839 | ddata->module_enable_quirk = sysc_module_enable_quirk_aess; | |
1840 | ||
7324a7a0 TL |
1841 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_DSS_RESET) |
1842 | ddata->pre_reset_quirk = sysc_pre_reset_quirk_dss; | |
1843 | ||
e8639e1c TL |
1844 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_RTC_UNLOCK) { |
1845 | ddata->module_unlock_quirk = sysc_module_unlock_quirk_rtc; | |
1846 | ddata->module_lock_quirk = sysc_module_lock_quirk_rtc; | |
1847 | ||
1848 | return; | |
1849 | } | |
1850 | ||
d7f563db TL |
1851 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_SGX) |
1852 | ddata->module_enable_quirk = sysc_module_enable_quirk_sgx; | |
1853 | ||
c7d8669f | 1854 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_WDT) { |
4e23be47 | 1855 | ddata->reset_done_quirk = sysc_reset_done_quirk_wdt; |
c7d8669f TL |
1856 | ddata->module_disable_quirk = sysc_reset_done_quirk_wdt; |
1857 | } | |
b2745d92 SA |
1858 | |
1859 | if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_PRUSS) | |
1860 | ddata->module_disable_quirk = sysc_module_disable_quirk_pruss; | |
4e23be47 TL |
1861 | } |
1862 | ||
2b2f7def TL |
1863 | static int sysc_clockdomain_init(struct sysc *ddata) |
1864 | { | |
1865 | struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev); | |
1866 | struct clk *fck = NULL, *ick = NULL; | |
1867 | int error; | |
1868 | ||
1869 | if (!pdata || !pdata->init_clockdomain) | |
1870 | return 0; | |
1871 | ||
1872 | switch (ddata->nr_clocks) { | |
1873 | case 2: | |
1874 | ick = ddata->clocks[SYSC_ICK]; | |
df561f66 | 1875 | fallthrough; |
2b2f7def TL |
1876 | case 1: |
1877 | fck = ddata->clocks[SYSC_FCK]; | |
1878 | break; | |
1879 | case 0: | |
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | error = pdata->init_clockdomain(ddata->dev, fck, ick, &ddata->cookie); | |
1884 | if (!error || error == -ENODEV) | |
1885 | return 0; | |
1886 | ||
1887 | return error; | |
1888 | } | |
1889 | ||
a3e92e7b TL |
1890 | /* |
1891 | * Note that pdata->init_module() typically does a reset first. After | |
1892 | * pdata->init_module() is done, PM runtime can be used for the interconnect | |
1893 | * target module. | |
1894 | */ | |
1895 | static int sysc_legacy_init(struct sysc *ddata) | |
1896 | { | |
1897 | struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev); | |
1898 | int error; | |
1899 | ||
2b2f7def | 1900 | if (!pdata || !pdata->init_module) |
a3e92e7b TL |
1901 | return 0; |
1902 | ||
1903 | error = pdata->init_module(ddata->dev, ddata->mdata, &ddata->cookie); | |
1904 | if (error == -EEXIST) | |
1905 | error = 0; | |
1906 | ||
1907 | return error; | |
1908 | } | |
1909 | ||
e0db94fe TL |
1910 | /* |
1911 | * Note that the caller must ensure the interconnect target module is enabled | |
1912 | * before calling reset. Otherwise reset will not complete. | |
1913 | */ | |
596e7955 FA |
1914 | static int sysc_reset(struct sysc *ddata) |
1915 | { | |
d46f9fbe TL |
1916 | int sysc_offset, sysc_val, error; |
1917 | u32 sysc_mask; | |
e0db94fe TL |
1918 | |
1919 | sysc_offset = ddata->offsets[SYSC_SYSCONFIG]; | |
596e7955 | 1920 | |
ab4d309d | 1921 | if (ddata->legacy_mode || |
e0db94fe | 1922 | ddata->cap->regbits->srst_shift < 0 || |
596e7955 FA |
1923 | ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT) |
1924 | return 0; | |
1925 | ||
e0db94fe | 1926 | sysc_mask = BIT(ddata->cap->regbits->srst_shift); |
596e7955 | 1927 | |
e64c021f TL |
1928 | if (ddata->pre_reset_quirk) |
1929 | ddata->pre_reset_quirk(ddata); | |
4e23be47 | 1930 | |
ab4d309d TL |
1931 | if (sysc_offset >= 0) { |
1932 | sysc_val = sysc_read_sysconfig(ddata); | |
1933 | sysc_val |= sysc_mask; | |
1934 | sysc_write(ddata, sysc_offset, sysc_val); | |
1935 | } | |
596e7955 | 1936 | |
e709ed70 TL |
1937 | if (ddata->cfg.srst_udelay) |
1938 | usleep_range(ddata->cfg.srst_udelay, | |
1939 | ddata->cfg.srst_udelay * 2); | |
1940 | ||
e64c021f TL |
1941 | if (ddata->post_reset_quirk) |
1942 | ddata->post_reset_quirk(ddata); | |
4e23be47 | 1943 | |
d46f9fbe TL |
1944 | error = sysc_wait_softreset(ddata); |
1945 | if (error) | |
1946 | dev_warn(ddata->dev, "OCP softreset timed out\n"); | |
596e7955 | 1947 | |
4e23be47 TL |
1948 | if (ddata->reset_done_quirk) |
1949 | ddata->reset_done_quirk(ddata); | |
1950 | ||
e0db94fe | 1951 | return error; |
596e7955 FA |
1952 | } |
1953 | ||
1a5cd7c2 TL |
1954 | /* |
1955 | * At this point the module is configured enough to read the revision but | |
1956 | * module may not be completely configured yet to use PM runtime. Enable | |
1957 | * all clocks directly during init to configure the quirks needed for PM | |
1958 | * runtime based on the revision register. | |
1959 | */ | |
566a9b05 TL |
1960 | static int sysc_init_module(struct sysc *ddata) |
1961 | { | |
4097c9a6 | 1962 | bool rstctrl_deasserted = false; |
1a5cd7c2 | 1963 | int error = 0; |
a885f0fe | 1964 | |
2b2f7def TL |
1965 | error = sysc_clockdomain_init(ddata); |
1966 | if (error) | |
1967 | return error; | |
1968 | ||
d098913a | 1969 | sysc_clkdm_deny_idle(ddata); |
2b2f7def | 1970 | |
d098913a TL |
1971 | /* |
1972 | * Always enable clocks. The bootloader may or may not have enabled | |
1973 | * the related clocks. | |
1974 | */ | |
1975 | error = sysc_enable_opt_clocks(ddata); | |
1976 | if (error) | |
1977 | return error; | |
566a9b05 | 1978 | |
d098913a TL |
1979 | error = sysc_enable_main_clocks(ddata); |
1980 | if (error) | |
1981 | goto err_opt_clocks; | |
5062236e | 1982 | |
ea5a2e4d | 1983 | if (!(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) { |
df4f3459 | 1984 | error = reset_control_deassert(ddata->rsts); |
ea5a2e4d TL |
1985 | if (error) |
1986 | goto err_main_clocks; | |
4097c9a6 | 1987 | rstctrl_deasserted = true; |
ea5a2e4d TL |
1988 | } |
1989 | ||
1a5cd7c2 TL |
1990 | ddata->revision = sysc_read_revision(ddata); |
1991 | sysc_init_revision_quirks(ddata); | |
4e23be47 | 1992 | sysc_init_module_quirks(ddata); |
1a5cd7c2 | 1993 | |
2b2f7def TL |
1994 | if (ddata->legacy_mode) { |
1995 | error = sysc_legacy_init(ddata); | |
1996 | if (error) | |
4097c9a6 | 1997 | goto err_main_clocks; |
2b2f7def TL |
1998 | } |
1999 | ||
d098913a | 2000 | if (!ddata->legacy_mode) { |
2b2f7def TL |
2001 | error = sysc_enable_module(ddata->dev); |
2002 | if (error) | |
4097c9a6 | 2003 | goto err_main_clocks; |
2b2f7def | 2004 | } |
a3e92e7b | 2005 | |
596e7955 | 2006 | error = sysc_reset(ddata); |
1a5cd7c2 | 2007 | if (error) |
596e7955 | 2008 | dev_err(ddata->dev, "Reset failed with %d\n", error); |
596e7955 | 2009 | |
cdc56c11 | 2010 | if (error && !ddata->legacy_mode) |
2b2f7def TL |
2011 | sysc_disable_module(ddata->dev); |
2012 | ||
a3e92e7b | 2013 | err_main_clocks: |
cdc56c11 | 2014 | if (error) |
1a5cd7c2 TL |
2015 | sysc_disable_main_clocks(ddata); |
2016 | err_opt_clocks: | |
d098913a | 2017 | /* No re-enable of clockdomain autoidle to prevent module autoidle */ |
cdc56c11 | 2018 | if (error) { |
1a5cd7c2 | 2019 | sysc_disable_opt_clocks(ddata); |
2b2f7def TL |
2020 | sysc_clkdm_allow_idle(ddata); |
2021 | } | |
a885f0fe | 2022 | |
4097c9a6 TL |
2023 | if (error && rstctrl_deasserted && |
2024 | !(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) | |
2025 | reset_control_assert(ddata->rsts); | |
2026 | ||
1a5cd7c2 | 2027 | return error; |
566a9b05 TL |
2028 | } |
2029 | ||
c5a2de97 TL |
2030 | static int sysc_init_sysc_mask(struct sysc *ddata) |
2031 | { | |
2032 | struct device_node *np = ddata->dev->of_node; | |
2033 | int error; | |
2034 | u32 val; | |
2035 | ||
2036 | error = of_property_read_u32(np, "ti,sysc-mask", &val); | |
2037 | if (error) | |
2038 | return 0; | |
2039 | ||
e212abd4 | 2040 | ddata->cfg.sysc_val = val & ddata->cap->sysc_mask; |
c5a2de97 TL |
2041 | |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | static int sysc_init_idlemode(struct sysc *ddata, u8 *idlemodes, | |
2046 | const char *name) | |
2047 | { | |
2048 | struct device_node *np = ddata->dev->of_node; | |
2049 | struct property *prop; | |
2050 | const __be32 *p; | |
2051 | u32 val; | |
2052 | ||
2053 | of_property_for_each_u32(np, name, prop, p, val) { | |
2054 | if (val >= SYSC_NR_IDLEMODES) { | |
2055 | dev_err(ddata->dev, "invalid idlemode: %i\n", val); | |
2056 | return -EINVAL; | |
2057 | } | |
2058 | *idlemodes |= (1 << val); | |
2059 | } | |
2060 | ||
2061 | return 0; | |
2062 | } | |
2063 | ||
2064 | static int sysc_init_idlemodes(struct sysc *ddata) | |
2065 | { | |
2066 | int error; | |
2067 | ||
2068 | error = sysc_init_idlemode(ddata, &ddata->cfg.midlemodes, | |
2069 | "ti,sysc-midle"); | |
2070 | if (error) | |
2071 | return error; | |
2072 | ||
2073 | error = sysc_init_idlemode(ddata, &ddata->cfg.sidlemodes, | |
2074 | "ti,sysc-sidle"); | |
2075 | if (error) | |
2076 | return error; | |
2077 | ||
2078 | return 0; | |
2079 | } | |
2080 | ||
2081 | /* | |
2082 | * Only some devices on omap4 and later have SYSCONFIG reset done | |
2083 | * bit. We can detect this if there is no SYSSTATUS at all, or the | |
2084 | * SYSTATUS bit 0 is not used. Note that some SYSSTATUS registers | |
2085 | * have multiple bits for the child devices like OHCI and EHCI. | |
2086 | * Depends on SYSC being parsed first. | |
2087 | */ | |
2088 | static int sysc_init_syss_mask(struct sysc *ddata) | |
2089 | { | |
2090 | struct device_node *np = ddata->dev->of_node; | |
2091 | int error; | |
2092 | u32 val; | |
2093 | ||
2094 | error = of_property_read_u32(np, "ti,syss-mask", &val); | |
2095 | if (error) { | |
2096 | if ((ddata->cap->type == TI_SYSC_OMAP4 || | |
2097 | ddata->cap->type == TI_SYSC_OMAP4_TIMER) && | |
2098 | (ddata->cfg.sysc_val & SYSC_OMAP4_SOFTRESET)) | |
2099 | ddata->cfg.quirks |= SYSC_QUIRK_RESET_STATUS; | |
2100 | ||
2101 | return 0; | |
2102 | } | |
2103 | ||
2104 | if (!(val & 1) && (ddata->cfg.sysc_val & SYSC_OMAP4_SOFTRESET)) | |
2105 | ddata->cfg.quirks |= SYSC_QUIRK_RESET_STATUS; | |
2106 | ||
2107 | ddata->cfg.syss_mask = val; | |
2108 | ||
2109 | return 0; | |
2110 | } | |
2111 | ||
2c355ff6 | 2112 | /* |
8b2830ba TL |
2113 | * Many child device drivers need to have fck and opt clocks available |
2114 | * to get the clock rate for device internal configuration etc. | |
2c355ff6 | 2115 | */ |
8b2830ba TL |
2116 | static int sysc_child_add_named_clock(struct sysc *ddata, |
2117 | struct device *child, | |
2118 | const char *name) | |
2c355ff6 | 2119 | { |
8b2830ba | 2120 | struct clk *clk; |
2c355ff6 | 2121 | struct clk_lookup *l; |
8b2830ba | 2122 | int error = 0; |
2c355ff6 | 2123 | |
8b2830ba | 2124 | if (!name) |
2c355ff6 TL |
2125 | return 0; |
2126 | ||
8b2830ba TL |
2127 | clk = clk_get(child, name); |
2128 | if (!IS_ERR(clk)) { | |
cb6cfe2e ME |
2129 | error = -EEXIST; |
2130 | goto put_clk; | |
2c355ff6 TL |
2131 | } |
2132 | ||
8b2830ba TL |
2133 | clk = clk_get(ddata->dev, name); |
2134 | if (IS_ERR(clk)) | |
2135 | return -ENODEV; | |
2c355ff6 | 2136 | |
8b2830ba TL |
2137 | l = clkdev_create(clk, name, dev_name(child)); |
2138 | if (!l) | |
2139 | error = -ENOMEM; | |
cb6cfe2e | 2140 | put_clk: |
8b2830ba TL |
2141 | clk_put(clk); |
2142 | ||
2143 | return error; | |
2c355ff6 TL |
2144 | } |
2145 | ||
09dfe581 TL |
2146 | static int sysc_child_add_clocks(struct sysc *ddata, |
2147 | struct device *child) | |
2148 | { | |
2149 | int i, error; | |
2150 | ||
2151 | for (i = 0; i < ddata->nr_clocks; i++) { | |
2152 | error = sysc_child_add_named_clock(ddata, | |
2153 | child, | |
2154 | ddata->clock_roles[i]); | |
2155 | if (error && error != -EEXIST) { | |
2156 | dev_err(ddata->dev, "could not add child clock %s: %i\n", | |
2157 | ddata->clock_roles[i], error); | |
2158 | ||
2159 | return error; | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | return 0; | |
2164 | } | |
2165 | ||
2c355ff6 TL |
2166 | static struct device_type sysc_device_type = { |
2167 | }; | |
2168 | ||
2169 | static struct sysc *sysc_child_to_parent(struct device *dev) | |
2170 | { | |
2171 | struct device *parent = dev->parent; | |
2172 | ||
2173 | if (!parent || parent->type != &sysc_device_type) | |
2174 | return NULL; | |
2175 | ||
2176 | return dev_get_drvdata(parent); | |
2177 | } | |
2178 | ||
a885f0fe TL |
2179 | static int __maybe_unused sysc_child_runtime_suspend(struct device *dev) |
2180 | { | |
2181 | struct sysc *ddata; | |
2182 | int error; | |
2183 | ||
2184 | ddata = sysc_child_to_parent(dev); | |
2185 | ||
2186 | error = pm_generic_runtime_suspend(dev); | |
2187 | if (error) | |
2188 | return error; | |
2189 | ||
2190 | if (!ddata->enabled) | |
2191 | return 0; | |
2192 | ||
2193 | return sysc_runtime_suspend(ddata->dev); | |
2194 | } | |
2195 | ||
2196 | static int __maybe_unused sysc_child_runtime_resume(struct device *dev) | |
2197 | { | |
2198 | struct sysc *ddata; | |
2199 | int error; | |
2200 | ||
2201 | ddata = sysc_child_to_parent(dev); | |
2202 | ||
2203 | if (!ddata->enabled) { | |
2204 | error = sysc_runtime_resume(ddata->dev); | |
2205 | if (error < 0) | |
2206 | dev_err(ddata->dev, | |
2207 | "%s error: %i\n", __func__, error); | |
2208 | } | |
2209 | ||
2210 | return pm_generic_runtime_resume(dev); | |
2211 | } | |
2212 | ||
2213 | #ifdef CONFIG_PM_SLEEP | |
2214 | static int sysc_child_suspend_noirq(struct device *dev) | |
2215 | { | |
2216 | struct sysc *ddata; | |
2217 | int error; | |
2218 | ||
2219 | ddata = sysc_child_to_parent(dev); | |
2220 | ||
ef55f821 TL |
2221 | dev_dbg(ddata->dev, "%s %s\n", __func__, |
2222 | ddata->name ? ddata->name : ""); | |
2223 | ||
a885f0fe | 2224 | error = pm_generic_suspend_noirq(dev); |
ef55f821 TL |
2225 | if (error) { |
2226 | dev_err(dev, "%s error at %i: %i\n", | |
2227 | __func__, __LINE__, error); | |
2228 | ||
a885f0fe | 2229 | return error; |
ef55f821 | 2230 | } |
a885f0fe TL |
2231 | |
2232 | if (!pm_runtime_status_suspended(dev)) { | |
2233 | error = pm_generic_runtime_suspend(dev); | |
ef55f821 | 2234 | if (error) { |
f9490783 TL |
2235 | dev_dbg(dev, "%s busy at %i: %i\n", |
2236 | __func__, __LINE__, error); | |
ef55f821 | 2237 | |
4f3530f4 | 2238 | return 0; |
ef55f821 | 2239 | } |
a885f0fe TL |
2240 | |
2241 | error = sysc_runtime_suspend(ddata->dev); | |
ef55f821 TL |
2242 | if (error) { |
2243 | dev_err(dev, "%s error at %i: %i\n", | |
2244 | __func__, __LINE__, error); | |
2245 | ||
a885f0fe | 2246 | return error; |
ef55f821 | 2247 | } |
a885f0fe TL |
2248 | |
2249 | ddata->child_needs_resume = true; | |
2250 | } | |
2251 | ||
2252 | return 0; | |
2253 | } | |
2254 | ||
2255 | static int sysc_child_resume_noirq(struct device *dev) | |
2256 | { | |
2257 | struct sysc *ddata; | |
2258 | int error; | |
2259 | ||
2260 | ddata = sysc_child_to_parent(dev); | |
2261 | ||
ef55f821 TL |
2262 | dev_dbg(ddata->dev, "%s %s\n", __func__, |
2263 | ddata->name ? ddata->name : ""); | |
2264 | ||
a885f0fe TL |
2265 | if (ddata->child_needs_resume) { |
2266 | ddata->child_needs_resume = false; | |
2267 | ||
2268 | error = sysc_runtime_resume(ddata->dev); | |
2269 | if (error) | |
2270 | dev_err(ddata->dev, | |
2271 | "%s runtime resume error: %i\n", | |
2272 | __func__, error); | |
2273 | ||
2274 | error = pm_generic_runtime_resume(dev); | |
2275 | if (error) | |
2276 | dev_err(ddata->dev, | |
2277 | "%s generic runtime resume: %i\n", | |
2278 | __func__, error); | |
2279 | } | |
2280 | ||
2281 | return pm_generic_resume_noirq(dev); | |
2282 | } | |
2283 | #endif | |
2284 | ||
b7182b42 | 2285 | static struct dev_pm_domain sysc_child_pm_domain = { |
a885f0fe TL |
2286 | .ops = { |
2287 | SET_RUNTIME_PM_OPS(sysc_child_runtime_suspend, | |
2288 | sysc_child_runtime_resume, | |
2289 | NULL) | |
2290 | USE_PLATFORM_PM_SLEEP_OPS | |
2291 | SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_child_suspend_noirq, | |
2292 | sysc_child_resume_noirq) | |
2293 | } | |
2294 | }; | |
2295 | ||
2296 | /** | |
2297 | * sysc_legacy_idle_quirk - handle children in omap_device compatible way | |
2298 | * @ddata: device driver data | |
2299 | * @child: child device driver | |
2300 | * | |
2301 | * Allow idle for child devices as done with _od_runtime_suspend(). | |
2302 | * Otherwise many child devices will not idle because of the permanent | |
2303 | * parent usecount set in pm_runtime_irq_safe(). | |
2304 | * | |
2305 | * Note that the long term solution is to just modify the child device | |
2306 | * drivers to not set pm_runtime_irq_safe() and then this can be just | |
2307 | * dropped. | |
2308 | */ | |
2309 | static void sysc_legacy_idle_quirk(struct sysc *ddata, struct device *child) | |
2310 | { | |
a885f0fe TL |
2311 | if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE) |
2312 | dev_pm_domain_set(child, &sysc_child_pm_domain); | |
2313 | } | |
2314 | ||
2c355ff6 TL |
2315 | static int sysc_notifier_call(struct notifier_block *nb, |
2316 | unsigned long event, void *device) | |
2317 | { | |
2318 | struct device *dev = device; | |
2319 | struct sysc *ddata; | |
2320 | int error; | |
2321 | ||
2322 | ddata = sysc_child_to_parent(dev); | |
2323 | if (!ddata) | |
2324 | return NOTIFY_DONE; | |
2325 | ||
2326 | switch (event) { | |
2327 | case BUS_NOTIFY_ADD_DEVICE: | |
09dfe581 TL |
2328 | error = sysc_child_add_clocks(ddata, dev); |
2329 | if (error) | |
2330 | return error; | |
a885f0fe | 2331 | sysc_legacy_idle_quirk(ddata, dev); |
2c355ff6 TL |
2332 | break; |
2333 | default: | |
2334 | break; | |
2335 | } | |
2336 | ||
2337 | return NOTIFY_DONE; | |
2338 | } | |
2339 | ||
2340 | static struct notifier_block sysc_nb = { | |
2341 | .notifier_call = sysc_notifier_call, | |
2342 | }; | |
2343 | ||
566a9b05 TL |
2344 | /* Device tree configured quirks */ |
2345 | struct sysc_dts_quirk { | |
2346 | const char *name; | |
2347 | u32 mask; | |
2348 | }; | |
2349 | ||
2350 | static const struct sysc_dts_quirk sysc_dts_quirks[] = { | |
2351 | { .name = "ti,no-idle-on-init", | |
2352 | .mask = SYSC_QUIRK_NO_IDLE_ON_INIT, }, | |
2353 | { .name = "ti,no-reset-on-init", | |
2354 | .mask = SYSC_QUIRK_NO_RESET_ON_INIT, }, | |
386cb766 TL |
2355 | { .name = "ti,no-idle", |
2356 | .mask = SYSC_QUIRK_NO_IDLE, }, | |
566a9b05 TL |
2357 | }; |
2358 | ||
4014c08b TL |
2359 | static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np, |
2360 | bool is_child) | |
566a9b05 | 2361 | { |
566a9b05 | 2362 | const struct property *prop; |
4014c08b | 2363 | int i, len; |
566a9b05 TL |
2364 | |
2365 | for (i = 0; i < ARRAY_SIZE(sysc_dts_quirks); i++) { | |
4014c08b TL |
2366 | const char *name = sysc_dts_quirks[i].name; |
2367 | ||
2368 | prop = of_get_property(np, name, &len); | |
566a9b05 | 2369 | if (!prop) |
d39b6ea4 | 2370 | continue; |
566a9b05 TL |
2371 | |
2372 | ddata->cfg.quirks |= sysc_dts_quirks[i].mask; | |
4014c08b TL |
2373 | if (is_child) { |
2374 | dev_warn(ddata->dev, | |
2375 | "dts flag should be at module level for %s\n", | |
2376 | name); | |
2377 | } | |
566a9b05 | 2378 | } |
4014c08b TL |
2379 | } |
2380 | ||
2381 | static int sysc_init_dts_quirks(struct sysc *ddata) | |
2382 | { | |
2383 | struct device_node *np = ddata->dev->of_node; | |
2384 | int error; | |
2385 | u32 val; | |
2386 | ||
2387 | ddata->legacy_mode = of_get_property(np, "ti,hwmods", NULL); | |
566a9b05 | 2388 | |
4014c08b | 2389 | sysc_parse_dts_quirks(ddata, np, false); |
566a9b05 TL |
2390 | error = of_property_read_u32(np, "ti,sysc-delay-us", &val); |
2391 | if (!error) { | |
2392 | if (val > 255) { | |
2393 | dev_warn(ddata->dev, "bad ti,sysc-delay-us: %i\n", | |
2394 | val); | |
2395 | } | |
2396 | ||
2397 | ddata->cfg.srst_udelay = (u8)val; | |
2398 | } | |
2399 | ||
2400 | return 0; | |
2401 | } | |
2402 | ||
0eecc636 TL |
2403 | static void sysc_unprepare(struct sysc *ddata) |
2404 | { | |
2405 | int i; | |
2406 | ||
aaa29bb0 TL |
2407 | if (!ddata->clocks) |
2408 | return; | |
2409 | ||
0eecc636 TL |
2410 | for (i = 0; i < SYSC_MAX_CLOCKS; i++) { |
2411 | if (!IS_ERR_OR_NULL(ddata->clocks[i])) | |
2412 | clk_unprepare(ddata->clocks[i]); | |
2413 | } | |
2414 | } | |
2415 | ||
70a65240 TL |
2416 | /* |
2417 | * Common sysc register bits found on omap2, also known as type1 | |
2418 | */ | |
2419 | static const struct sysc_regbits sysc_regbits_omap2 = { | |
2420 | .dmadisable_shift = -ENODEV, | |
2421 | .midle_shift = 12, | |
2422 | .sidle_shift = 3, | |
2423 | .clkact_shift = 8, | |
2424 | .emufree_shift = 5, | |
2425 | .enwkup_shift = 2, | |
2426 | .srst_shift = 1, | |
2427 | .autoidle_shift = 0, | |
2428 | }; | |
2429 | ||
2430 | static const struct sysc_capabilities sysc_omap2 = { | |
2431 | .type = TI_SYSC_OMAP2, | |
2432 | .sysc_mask = SYSC_OMAP2_CLOCKACTIVITY | SYSC_OMAP2_EMUFREE | | |
2433 | SYSC_OMAP2_ENAWAKEUP | SYSC_OMAP2_SOFTRESET | | |
2434 | SYSC_OMAP2_AUTOIDLE, | |
2435 | .regbits = &sysc_regbits_omap2, | |
2436 | }; | |
2437 | ||
2438 | /* All omap2 and 3 timers, and timers 1, 2 & 10 on omap 4 and 5 */ | |
2439 | static const struct sysc_capabilities sysc_omap2_timer = { | |
2440 | .type = TI_SYSC_OMAP2_TIMER, | |
2441 | .sysc_mask = SYSC_OMAP2_CLOCKACTIVITY | SYSC_OMAP2_EMUFREE | | |
2442 | SYSC_OMAP2_ENAWAKEUP | SYSC_OMAP2_SOFTRESET | | |
2443 | SYSC_OMAP2_AUTOIDLE, | |
2444 | .regbits = &sysc_regbits_omap2, | |
2445 | .mod_quirks = SYSC_QUIRK_USE_CLOCKACT, | |
2446 | }; | |
2447 | ||
2448 | /* | |
2449 | * SHAM2 (SHA1/MD5) sysc found on omap3, a variant of sysc_regbits_omap2 | |
2450 | * with different sidle position | |
2451 | */ | |
2452 | static const struct sysc_regbits sysc_regbits_omap3_sham = { | |
2453 | .dmadisable_shift = -ENODEV, | |
2454 | .midle_shift = -ENODEV, | |
2455 | .sidle_shift = 4, | |
2456 | .clkact_shift = -ENODEV, | |
2457 | .enwkup_shift = -ENODEV, | |
2458 | .srst_shift = 1, | |
2459 | .autoidle_shift = 0, | |
2460 | .emufree_shift = -ENODEV, | |
2461 | }; | |
2462 | ||
2463 | static const struct sysc_capabilities sysc_omap3_sham = { | |
2464 | .type = TI_SYSC_OMAP3_SHAM, | |
2465 | .sysc_mask = SYSC_OMAP2_SOFTRESET | SYSC_OMAP2_AUTOIDLE, | |
2466 | .regbits = &sysc_regbits_omap3_sham, | |
2467 | }; | |
2468 | ||
2469 | /* | |
2470 | * AES register bits found on omap3 and later, a variant of | |
2471 | * sysc_regbits_omap2 with different sidle position | |
2472 | */ | |
2473 | static const struct sysc_regbits sysc_regbits_omap3_aes = { | |
2474 | .dmadisable_shift = -ENODEV, | |
2475 | .midle_shift = -ENODEV, | |
2476 | .sidle_shift = 6, | |
2477 | .clkact_shift = -ENODEV, | |
2478 | .enwkup_shift = -ENODEV, | |
2479 | .srst_shift = 1, | |
2480 | .autoidle_shift = 0, | |
2481 | .emufree_shift = -ENODEV, | |
2482 | }; | |
2483 | ||
2484 | static const struct sysc_capabilities sysc_omap3_aes = { | |
2485 | .type = TI_SYSC_OMAP3_AES, | |
2486 | .sysc_mask = SYSC_OMAP2_SOFTRESET | SYSC_OMAP2_AUTOIDLE, | |
2487 | .regbits = &sysc_regbits_omap3_aes, | |
2488 | }; | |
2489 | ||
2490 | /* | |
2491 | * Common sysc register bits found on omap4, also known as type2 | |
2492 | */ | |
2493 | static const struct sysc_regbits sysc_regbits_omap4 = { | |
2494 | .dmadisable_shift = 16, | |
2495 | .midle_shift = 4, | |
2496 | .sidle_shift = 2, | |
2497 | .clkact_shift = -ENODEV, | |
2498 | .enwkup_shift = -ENODEV, | |
2499 | .emufree_shift = 1, | |
2500 | .srst_shift = 0, | |
2501 | .autoidle_shift = -ENODEV, | |
2502 | }; | |
2503 | ||
2504 | static const struct sysc_capabilities sysc_omap4 = { | |
2505 | .type = TI_SYSC_OMAP4, | |
2506 | .sysc_mask = SYSC_OMAP4_DMADISABLE | SYSC_OMAP4_FREEEMU | | |
2507 | SYSC_OMAP4_SOFTRESET, | |
2508 | .regbits = &sysc_regbits_omap4, | |
2509 | }; | |
2510 | ||
2511 | static const struct sysc_capabilities sysc_omap4_timer = { | |
2512 | .type = TI_SYSC_OMAP4_TIMER, | |
2513 | .sysc_mask = SYSC_OMAP4_DMADISABLE | SYSC_OMAP4_FREEEMU | | |
2514 | SYSC_OMAP4_SOFTRESET, | |
2515 | .regbits = &sysc_regbits_omap4, | |
2516 | }; | |
2517 | ||
2518 | /* | |
2519 | * Common sysc register bits found on omap4, also known as type3 | |
2520 | */ | |
2521 | static const struct sysc_regbits sysc_regbits_omap4_simple = { | |
2522 | .dmadisable_shift = -ENODEV, | |
2523 | .midle_shift = 2, | |
2524 | .sidle_shift = 0, | |
2525 | .clkact_shift = -ENODEV, | |
2526 | .enwkup_shift = -ENODEV, | |
2527 | .srst_shift = -ENODEV, | |
2528 | .emufree_shift = -ENODEV, | |
2529 | .autoidle_shift = -ENODEV, | |
2530 | }; | |
2531 | ||
2532 | static const struct sysc_capabilities sysc_omap4_simple = { | |
2533 | .type = TI_SYSC_OMAP4_SIMPLE, | |
2534 | .regbits = &sysc_regbits_omap4_simple, | |
2535 | }; | |
2536 | ||
2537 | /* | |
2538 | * SmartReflex sysc found on omap34xx | |
2539 | */ | |
2540 | static const struct sysc_regbits sysc_regbits_omap34xx_sr = { | |
2541 | .dmadisable_shift = -ENODEV, | |
2542 | .midle_shift = -ENODEV, | |
2543 | .sidle_shift = -ENODEV, | |
2544 | .clkact_shift = 20, | |
2545 | .enwkup_shift = -ENODEV, | |
2546 | .srst_shift = -ENODEV, | |
2547 | .emufree_shift = -ENODEV, | |
2548 | .autoidle_shift = -ENODEV, | |
2549 | }; | |
2550 | ||
2551 | static const struct sysc_capabilities sysc_34xx_sr = { | |
2552 | .type = TI_SYSC_OMAP34XX_SR, | |
2553 | .sysc_mask = SYSC_OMAP2_CLOCKACTIVITY, | |
2554 | .regbits = &sysc_regbits_omap34xx_sr, | |
a885f0fe TL |
2555 | .mod_quirks = SYSC_QUIRK_USE_CLOCKACT | SYSC_QUIRK_UNCACHED | |
2556 | SYSC_QUIRK_LEGACY_IDLE, | |
70a65240 TL |
2557 | }; |
2558 | ||
2559 | /* | |
2560 | * SmartReflex sysc found on omap36xx and later | |
2561 | */ | |
2562 | static const struct sysc_regbits sysc_regbits_omap36xx_sr = { | |
2563 | .dmadisable_shift = -ENODEV, | |
2564 | .midle_shift = -ENODEV, | |
2565 | .sidle_shift = 24, | |
2566 | .clkact_shift = -ENODEV, | |
2567 | .enwkup_shift = 26, | |
2568 | .srst_shift = -ENODEV, | |
2569 | .emufree_shift = -ENODEV, | |
2570 | .autoidle_shift = -ENODEV, | |
2571 | }; | |
2572 | ||
2573 | static const struct sysc_capabilities sysc_36xx_sr = { | |
2574 | .type = TI_SYSC_OMAP36XX_SR, | |
3267c081 | 2575 | .sysc_mask = SYSC_OMAP3_SR_ENAWAKEUP, |
70a65240 | 2576 | .regbits = &sysc_regbits_omap36xx_sr, |
a885f0fe | 2577 | .mod_quirks = SYSC_QUIRK_UNCACHED | SYSC_QUIRK_LEGACY_IDLE, |
70a65240 TL |
2578 | }; |
2579 | ||
2580 | static const struct sysc_capabilities sysc_omap4_sr = { | |
2581 | .type = TI_SYSC_OMAP4_SR, | |
2582 | .regbits = &sysc_regbits_omap36xx_sr, | |
a885f0fe | 2583 | .mod_quirks = SYSC_QUIRK_LEGACY_IDLE, |
70a65240 TL |
2584 | }; |
2585 | ||
2586 | /* | |
2587 | * McASP register bits found on omap4 and later | |
2588 | */ | |
2589 | static const struct sysc_regbits sysc_regbits_omap4_mcasp = { | |
2590 | .dmadisable_shift = -ENODEV, | |
2591 | .midle_shift = -ENODEV, | |
2592 | .sidle_shift = 0, | |
2593 | .clkact_shift = -ENODEV, | |
2594 | .enwkup_shift = -ENODEV, | |
2595 | .srst_shift = -ENODEV, | |
2596 | .emufree_shift = -ENODEV, | |
2597 | .autoidle_shift = -ENODEV, | |
2598 | }; | |
2599 | ||
2600 | static const struct sysc_capabilities sysc_omap4_mcasp = { | |
2601 | .type = TI_SYSC_OMAP4_MCASP, | |
2602 | .regbits = &sysc_regbits_omap4_mcasp, | |
2c63a833 TL |
2603 | .mod_quirks = SYSC_QUIRK_OPT_CLKS_NEEDED, |
2604 | }; | |
2605 | ||
2606 | /* | |
2607 | * McASP found on dra7 and later | |
2608 | */ | |
2609 | static const struct sysc_capabilities sysc_dra7_mcasp = { | |
2610 | .type = TI_SYSC_OMAP4_SIMPLE, | |
2611 | .regbits = &sysc_regbits_omap4_simple, | |
2612 | .mod_quirks = SYSC_QUIRK_OPT_CLKS_NEEDED, | |
70a65240 TL |
2613 | }; |
2614 | ||
2615 | /* | |
2616 | * FS USB host found on omap4 and later | |
2617 | */ | |
2618 | static const struct sysc_regbits sysc_regbits_omap4_usb_host_fs = { | |
2619 | .dmadisable_shift = -ENODEV, | |
2620 | .midle_shift = -ENODEV, | |
2621 | .sidle_shift = 24, | |
2622 | .clkact_shift = -ENODEV, | |
2623 | .enwkup_shift = 26, | |
2624 | .srst_shift = -ENODEV, | |
2625 | .emufree_shift = -ENODEV, | |
2626 | .autoidle_shift = -ENODEV, | |
2627 | }; | |
2628 | ||
2629 | static const struct sysc_capabilities sysc_omap4_usb_host_fs = { | |
2630 | .type = TI_SYSC_OMAP4_USB_HOST_FS, | |
2631 | .sysc_mask = SYSC_OMAP2_ENAWAKEUP, | |
2632 | .regbits = &sysc_regbits_omap4_usb_host_fs, | |
2633 | }; | |
2634 | ||
7f35e63d FA |
2635 | static const struct sysc_regbits sysc_regbits_dra7_mcan = { |
2636 | .dmadisable_shift = -ENODEV, | |
2637 | .midle_shift = -ENODEV, | |
2638 | .sidle_shift = -ENODEV, | |
2639 | .clkact_shift = -ENODEV, | |
2640 | .enwkup_shift = 4, | |
2641 | .srst_shift = 0, | |
2642 | .emufree_shift = -ENODEV, | |
2643 | .autoidle_shift = -ENODEV, | |
2644 | }; | |
2645 | ||
2646 | static const struct sysc_capabilities sysc_dra7_mcan = { | |
2647 | .type = TI_SYSC_DRA7_MCAN, | |
2648 | .sysc_mask = SYSC_DRA7_MCAN_ENAWAKEUP | SYSC_OMAP4_SOFTRESET, | |
2649 | .regbits = &sysc_regbits_dra7_mcan, | |
e0db94fe | 2650 | .mod_quirks = SYSS_QUIRK_RESETDONE_INVERTED, |
7f35e63d FA |
2651 | }; |
2652 | ||
b2745d92 SA |
2653 | /* |
2654 | * PRUSS found on some AM33xx, AM437x and AM57xx SoCs | |
2655 | */ | |
2656 | static const struct sysc_capabilities sysc_pruss = { | |
2657 | .type = TI_SYSC_PRUSS, | |
2658 | .sysc_mask = SYSC_PRUSS_STANDBY_INIT | SYSC_PRUSS_SUB_MWAIT, | |
2659 | .regbits = &sysc_regbits_omap4_simple, | |
2660 | .mod_quirks = SYSC_MODULE_QUIRK_PRUSS, | |
2661 | }; | |
2662 | ||
ef70b0bd TL |
2663 | static int sysc_init_pdata(struct sysc *ddata) |
2664 | { | |
2665 | struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev); | |
a3e92e7b | 2666 | struct ti_sysc_module_data *mdata; |
ef70b0bd | 2667 | |
2b2f7def | 2668 | if (!pdata) |
ef70b0bd TL |
2669 | return 0; |
2670 | ||
a3e92e7b TL |
2671 | mdata = devm_kzalloc(ddata->dev, sizeof(*mdata), GFP_KERNEL); |
2672 | if (!mdata) | |
2673 | return -ENOMEM; | |
ef70b0bd | 2674 | |
2b2f7def TL |
2675 | if (ddata->legacy_mode) { |
2676 | mdata->name = ddata->legacy_mode; | |
2677 | mdata->module_pa = ddata->module_pa; | |
2678 | mdata->module_size = ddata->module_size; | |
2679 | mdata->offsets = ddata->offsets; | |
2680 | mdata->nr_offsets = SYSC_MAX_REGS; | |
2681 | mdata->cap = ddata->cap; | |
2682 | mdata->cfg = &ddata->cfg; | |
2683 | } | |
ef70b0bd | 2684 | |
a3e92e7b | 2685 | ddata->mdata = mdata; |
ef70b0bd | 2686 | |
a3e92e7b | 2687 | return 0; |
ef70b0bd TL |
2688 | } |
2689 | ||
70a65240 TL |
2690 | static int sysc_init_match(struct sysc *ddata) |
2691 | { | |
2692 | const struct sysc_capabilities *cap; | |
2693 | ||
2694 | cap = of_device_get_match_data(ddata->dev); | |
2695 | if (!cap) | |
2696 | return -EINVAL; | |
2697 | ||
2698 | ddata->cap = cap; | |
2699 | if (ddata->cap) | |
2700 | ddata->cfg.quirks |= ddata->cap->mod_quirks; | |
2701 | ||
2702 | return 0; | |
2703 | } | |
2704 | ||
76f0f772 TL |
2705 | static void ti_sysc_idle(struct work_struct *work) |
2706 | { | |
2707 | struct sysc *ddata; | |
2708 | ||
2709 | ddata = container_of(work, struct sysc, idle_work.work); | |
2710 | ||
d098913a TL |
2711 | /* |
2712 | * One time decrement of clock usage counts if left on from init. | |
2713 | * Note that we disable opt clocks unconditionally in this case | |
2714 | * as they are enabled unconditionally during init without | |
2715 | * considering sysc_opt_clks_needed() at that point. | |
2716 | */ | |
2717 | if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE | | |
2718 | SYSC_QUIRK_NO_IDLE_ON_INIT)) { | |
d098913a TL |
2719 | sysc_disable_main_clocks(ddata); |
2720 | sysc_disable_opt_clocks(ddata); | |
2721 | sysc_clkdm_allow_idle(ddata); | |
2722 | } | |
2723 | ||
2724 | /* Keep permanent PM runtime usage count for SYSC_QUIRK_NO_IDLE */ | |
2725 | if (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE) | |
2726 | return; | |
2727 | ||
2728 | /* | |
2729 | * Decrement PM runtime usage count for SYSC_QUIRK_NO_IDLE_ON_INIT | |
2730 | * and SYSC_QUIRK_NO_RESET_ON_INIT | |
2731 | */ | |
76f0f772 TL |
2732 | if (pm_runtime_active(ddata->dev)) |
2733 | pm_runtime_put_sync(ddata->dev); | |
2734 | } | |
2735 | ||
feaa8bae TL |
2736 | /* |
2737 | * SoC model and features detection. Only needed for SoCs that need | |
2738 | * special handling for quirks, no need to list others. | |
2739 | */ | |
2740 | static const struct soc_device_attribute sysc_soc_match[] = { | |
2741 | SOC_FLAG("OMAP242*", SOC_2420), | |
2742 | SOC_FLAG("OMAP243*", SOC_2430), | |
2743 | SOC_FLAG("OMAP3[45]*", SOC_3430), | |
2744 | SOC_FLAG("OMAP3[67]*", SOC_3630), | |
2745 | SOC_FLAG("OMAP443*", SOC_4430), | |
2746 | SOC_FLAG("OMAP446*", SOC_4460), | |
2747 | SOC_FLAG("OMAP447*", SOC_4470), | |
2748 | SOC_FLAG("OMAP54*", SOC_5430), | |
2749 | SOC_FLAG("AM433", SOC_AM3), | |
2750 | SOC_FLAG("AM43*", SOC_AM4), | |
2751 | SOC_FLAG("DRA7*", SOC_DRA7), | |
2752 | ||
2753 | { /* sentinel */ }, | |
2754 | }; | |
2755 | ||
2756 | /* | |
2757 | * List of SoCs variants with disabled features. By default we assume all | |
2758 | * devices in the device tree are available so no need to list those SoCs. | |
2759 | */ | |
2760 | static const struct soc_device_attribute sysc_soc_feat_match[] = { | |
2761 | /* OMAP3430/3530 and AM3517 variants with some accelerators disabled */ | |
2762 | SOC_FLAG("AM3505", DIS_SGX), | |
2763 | SOC_FLAG("OMAP3525", DIS_SGX), | |
2764 | SOC_FLAG("OMAP3515", DIS_IVA | DIS_SGX), | |
2765 | SOC_FLAG("OMAP3503", DIS_ISP | DIS_IVA | DIS_SGX), | |
2766 | ||
2767 | /* OMAP3630/DM3730 variants with some accelerators disabled */ | |
2768 | SOC_FLAG("AM3703", DIS_IVA | DIS_SGX), | |
2769 | SOC_FLAG("DM3725", DIS_SGX), | |
2770 | SOC_FLAG("OMAP3611", DIS_ISP | DIS_IVA | DIS_SGX), | |
2771 | SOC_FLAG("OMAP3615/AM3715", DIS_IVA), | |
2772 | SOC_FLAG("OMAP3621", DIS_ISP), | |
2773 | ||
2774 | { /* sentinel */ }, | |
2775 | }; | |
2776 | ||
2777 | static int sysc_add_disabled(unsigned long base) | |
2778 | { | |
2779 | struct sysc_address *disabled_module; | |
2780 | ||
2781 | disabled_module = kzalloc(sizeof(*disabled_module), GFP_KERNEL); | |
2782 | if (!disabled_module) | |
2783 | return -ENOMEM; | |
2784 | ||
2785 | disabled_module->base = base; | |
2786 | ||
2787 | mutex_lock(&sysc_soc->list_lock); | |
2788 | list_add(&disabled_module->node, &sysc_soc->disabled_modules); | |
2789 | mutex_unlock(&sysc_soc->list_lock); | |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
2794 | /* | |
2795 | * One time init to detect the booted SoC and disable unavailable features. | |
2796 | * Note that we initialize static data shared across all ti-sysc instances | |
2797 | * so ddata is only used for SoC type. This can be called from module_init | |
2798 | * once we no longer need to rely on platform data. | |
2799 | */ | |
2800 | static int sysc_init_soc(struct sysc *ddata) | |
2801 | { | |
2802 | const struct soc_device_attribute *match; | |
2803 | struct ti_sysc_platform_data *pdata; | |
2804 | unsigned long features = 0; | |
2805 | ||
2806 | if (sysc_soc) | |
2807 | return 0; | |
2808 | ||
2809 | sysc_soc = kzalloc(sizeof(*sysc_soc), GFP_KERNEL); | |
2810 | if (!sysc_soc) | |
2811 | return -ENOMEM; | |
2812 | ||
2813 | mutex_init(&sysc_soc->list_lock); | |
2814 | INIT_LIST_HEAD(&sysc_soc->disabled_modules); | |
2815 | sysc_soc->general_purpose = true; | |
2816 | ||
2817 | pdata = dev_get_platdata(ddata->dev); | |
2818 | if (pdata && pdata->soc_type_gp) | |
2819 | sysc_soc->general_purpose = pdata->soc_type_gp(); | |
2820 | ||
2821 | match = soc_device_match(sysc_soc_match); | |
2822 | if (match && match->data) | |
2823 | sysc_soc->soc = (int)match->data; | |
2824 | ||
4bba9bf0 TL |
2825 | /* Ignore devices that are not available on HS and EMU SoCs */ |
2826 | if (!sysc_soc->general_purpose) { | |
2827 | switch (sysc_soc->soc) { | |
2828 | case SOC_3430 ... SOC_3630: | |
2829 | sysc_add_disabled(0x48304000); /* timer12 */ | |
2830 | break; | |
2831 | default: | |
2832 | break; | |
2833 | }; | |
2834 | } | |
2835 | ||
feaa8bae TL |
2836 | match = soc_device_match(sysc_soc_feat_match); |
2837 | if (!match) | |
2838 | return 0; | |
2839 | ||
2840 | if (match->data) | |
2841 | features = (unsigned long)match->data; | |
2842 | ||
2843 | /* | |
2844 | * Add disabled devices to the list based on the module base. | |
2845 | * Note that this must be done before we attempt to access the | |
2846 | * device and have module revision checks working. | |
2847 | */ | |
2848 | if (features & DIS_ISP) | |
2849 | sysc_add_disabled(0x480bd400); | |
2850 | if (features & DIS_IVA) | |
2851 | sysc_add_disabled(0x5d000000); | |
2852 | if (features & DIS_SGX) | |
2853 | sysc_add_disabled(0x50000000); | |
2854 | ||
2855 | return 0; | |
2856 | } | |
2857 | ||
2858 | static void sysc_cleanup_soc(void) | |
2859 | { | |
2860 | struct sysc_address *disabled_module; | |
2861 | struct list_head *pos, *tmp; | |
2862 | ||
2863 | if (!sysc_soc) | |
2864 | return; | |
2865 | ||
2866 | mutex_lock(&sysc_soc->list_lock); | |
2867 | list_for_each_safe(pos, tmp, &sysc_soc->disabled_modules) { | |
2868 | disabled_module = list_entry(pos, struct sysc_address, node); | |
2869 | list_del(pos); | |
2870 | kfree(disabled_module); | |
2871 | } | |
2872 | mutex_unlock(&sysc_soc->list_lock); | |
2873 | } | |
2874 | ||
2875 | static int sysc_check_disabled_devices(struct sysc *ddata) | |
2876 | { | |
2877 | struct sysc_address *disabled_module; | |
2878 | struct list_head *pos; | |
2879 | int error = 0; | |
2880 | ||
2881 | mutex_lock(&sysc_soc->list_lock); | |
2882 | list_for_each(pos, &sysc_soc->disabled_modules) { | |
2883 | disabled_module = list_entry(pos, struct sysc_address, node); | |
2884 | if (ddata->module_pa == disabled_module->base) { | |
2885 | dev_dbg(ddata->dev, "module disabled for this SoC\n"); | |
2886 | error = -ENODEV; | |
2887 | break; | |
2888 | } | |
2889 | } | |
2890 | mutex_unlock(&sysc_soc->list_lock); | |
2891 | ||
2892 | return error; | |
2893 | } | |
2894 | ||
6cfcd556 TL |
2895 | /* |
2896 | * Ignore timers tagged with no-reset and no-idle. These are likely in use, | |
2897 | * for example by drivers/clocksource/timer-ti-dm-systimer.c. If more checks | |
2898 | * are needed, we could also look at the timer register configuration. | |
2899 | */ | |
2900 | static int sysc_check_active_timer(struct sysc *ddata) | |
2901 | { | |
2902 | if (ddata->cap->type != TI_SYSC_OMAP2_TIMER && | |
2903 | ddata->cap->type != TI_SYSC_OMAP4_TIMER) | |
2904 | return 0; | |
2905 | ||
2906 | if ((ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT) && | |
2907 | (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE)) | |
65fb7367 | 2908 | return -ENXIO; |
6cfcd556 TL |
2909 | |
2910 | return 0; | |
2911 | } | |
2912 | ||
c4bebea8 TL |
2913 | static const struct of_device_id sysc_match_table[] = { |
2914 | { .compatible = "simple-bus", }, | |
2915 | { /* sentinel */ }, | |
2916 | }; | |
2917 | ||
0eecc636 TL |
2918 | static int sysc_probe(struct platform_device *pdev) |
2919 | { | |
ef70b0bd | 2920 | struct ti_sysc_platform_data *pdata = dev_get_platdata(&pdev->dev); |
0eecc636 TL |
2921 | struct sysc *ddata; |
2922 | int error; | |
2923 | ||
2924 | ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); | |
2925 | if (!ddata) | |
2926 | return -ENOMEM; | |
2927 | ||
2928135c TL |
2928 | ddata->offsets[SYSC_REVISION] = -ENODEV; |
2929 | ddata->offsets[SYSC_SYSCONFIG] = -ENODEV; | |
2930 | ddata->offsets[SYSC_SYSSTATUS] = -ENODEV; | |
0eecc636 | 2931 | ddata->dev = &pdev->dev; |
566a9b05 | 2932 | platform_set_drvdata(pdev, ddata); |
0eecc636 | 2933 | |
feaa8bae TL |
2934 | error = sysc_init_soc(ddata); |
2935 | if (error) | |
2936 | return error; | |
2937 | ||
70a65240 TL |
2938 | error = sysc_init_match(ddata); |
2939 | if (error) | |
2940 | return error; | |
2941 | ||
566a9b05 TL |
2942 | error = sysc_init_dts_quirks(ddata); |
2943 | if (error) | |
a304f483 | 2944 | return error; |
566a9b05 | 2945 | |
0eecc636 TL |
2946 | error = sysc_map_and_check_registers(ddata); |
2947 | if (error) | |
a304f483 | 2948 | return error; |
0eecc636 | 2949 | |
c5a2de97 TL |
2950 | error = sysc_init_sysc_mask(ddata); |
2951 | if (error) | |
a304f483 | 2952 | return error; |
c5a2de97 TL |
2953 | |
2954 | error = sysc_init_idlemodes(ddata); | |
2955 | if (error) | |
a304f483 | 2956 | return error; |
c5a2de97 TL |
2957 | |
2958 | error = sysc_init_syss_mask(ddata); | |
2959 | if (error) | |
a304f483 | 2960 | return error; |
c5a2de97 | 2961 | |
ef70b0bd TL |
2962 | error = sysc_init_pdata(ddata); |
2963 | if (error) | |
a304f483 | 2964 | return error; |
ef70b0bd | 2965 | |
42b9c5c9 TL |
2966 | sysc_init_early_quirks(ddata); |
2967 | ||
feaa8bae TL |
2968 | error = sysc_check_disabled_devices(ddata); |
2969 | if (error) | |
2970 | return error; | |
2971 | ||
6cfcd556 TL |
2972 | error = sysc_check_active_timer(ddata); |
2973 | if (error) | |
2974 | return error; | |
2975 | ||
42b9c5c9 TL |
2976 | error = sysc_get_clocks(ddata); |
2977 | if (error) | |
2978 | return error; | |
2979 | ||
5062236e TL |
2980 | error = sysc_init_resets(ddata); |
2981 | if (error) | |
a304f483 | 2982 | goto unprepare; |
566a9b05 TL |
2983 | |
2984 | error = sysc_init_module(ddata); | |
2985 | if (error) | |
2986 | goto unprepare; | |
2987 | ||
1a5cd7c2 | 2988 | pm_runtime_enable(ddata->dev); |
0eecc636 TL |
2989 | error = pm_runtime_get_sync(ddata->dev); |
2990 | if (error < 0) { | |
2991 | pm_runtime_put_noidle(ddata->dev); | |
2992 | pm_runtime_disable(ddata->dev); | |
2993 | goto unprepare; | |
2994 | } | |
2995 | ||
cdc56c11 | 2996 | /* Balance use counts as PM runtime should have enabled these all */ |
cdc56c11 TK |
2997 | if (!(ddata->cfg.quirks & |
2998 | (SYSC_QUIRK_NO_IDLE | SYSC_QUIRK_NO_IDLE_ON_INIT))) { | |
2999 | sysc_disable_main_clocks(ddata); | |
3000 | sysc_disable_opt_clocks(ddata); | |
3001 | sysc_clkdm_allow_idle(ddata); | |
3002 | } | |
3003 | ||
4097c9a6 TL |
3004 | if (!(ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT)) |
3005 | reset_control_assert(ddata->rsts); | |
3006 | ||
0eecc636 TL |
3007 | sysc_show_registers(ddata); |
3008 | ||
2c355ff6 | 3009 | ddata->dev->type = &sysc_device_type; |
c4bebea8 TL |
3010 | error = of_platform_populate(ddata->dev->of_node, sysc_match_table, |
3011 | pdata ? pdata->auxdata : NULL, | |
ef70b0bd | 3012 | ddata->dev); |
0eecc636 TL |
3013 | if (error) |
3014 | goto err; | |
3015 | ||
76f0f772 TL |
3016 | INIT_DELAYED_WORK(&ddata->idle_work, ti_sysc_idle); |
3017 | ||
3018 | /* At least earlycon won't survive without deferred idle */ | |
d098913a TL |
3019 | if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE | |
3020 | SYSC_QUIRK_NO_IDLE_ON_INIT | | |
76f0f772 TL |
3021 | SYSC_QUIRK_NO_RESET_ON_INIT)) { |
3022 | schedule_delayed_work(&ddata->idle_work, 3000); | |
3023 | } else { | |
3024 | pm_runtime_put(&pdev->dev); | |
3025 | } | |
0eecc636 TL |
3026 | |
3027 | return 0; | |
3028 | ||
3029 | err: | |
0eecc636 TL |
3030 | pm_runtime_put_sync(&pdev->dev); |
3031 | pm_runtime_disable(&pdev->dev); | |
3032 | unprepare: | |
3033 | sysc_unprepare(ddata); | |
3034 | ||
3035 | return error; | |
3036 | } | |
3037 | ||
684be5a4 TL |
3038 | static int sysc_remove(struct platform_device *pdev) |
3039 | { | |
3040 | struct sysc *ddata = platform_get_drvdata(pdev); | |
3041 | int error; | |
3042 | ||
76f0f772 TL |
3043 | cancel_delayed_work_sync(&ddata->idle_work); |
3044 | ||
684be5a4 TL |
3045 | error = pm_runtime_get_sync(ddata->dev); |
3046 | if (error < 0) { | |
3047 | pm_runtime_put_noidle(ddata->dev); | |
3048 | pm_runtime_disable(ddata->dev); | |
3049 | goto unprepare; | |
3050 | } | |
3051 | ||
3052 | of_platform_depopulate(&pdev->dev); | |
3053 | ||
684be5a4 TL |
3054 | pm_runtime_put_sync(&pdev->dev); |
3055 | pm_runtime_disable(&pdev->dev); | |
a7b5d7c4 TL |
3056 | |
3057 | if (!reset_control_status(ddata->rsts)) | |
3058 | reset_control_assert(ddata->rsts); | |
684be5a4 TL |
3059 | |
3060 | unprepare: | |
3061 | sysc_unprepare(ddata); | |
3062 | ||
3063 | return 0; | |
3064 | } | |
3065 | ||
0eecc636 | 3066 | static const struct of_device_id sysc_match[] = { |
70a65240 TL |
3067 | { .compatible = "ti,sysc-omap2", .data = &sysc_omap2, }, |
3068 | { .compatible = "ti,sysc-omap2-timer", .data = &sysc_omap2_timer, }, | |
3069 | { .compatible = "ti,sysc-omap4", .data = &sysc_omap4, }, | |
3070 | { .compatible = "ti,sysc-omap4-timer", .data = &sysc_omap4_timer, }, | |
3071 | { .compatible = "ti,sysc-omap4-simple", .data = &sysc_omap4_simple, }, | |
3072 | { .compatible = "ti,sysc-omap3430-sr", .data = &sysc_34xx_sr, }, | |
3073 | { .compatible = "ti,sysc-omap3630-sr", .data = &sysc_36xx_sr, }, | |
3074 | { .compatible = "ti,sysc-omap4-sr", .data = &sysc_omap4_sr, }, | |
3075 | { .compatible = "ti,sysc-omap3-sham", .data = &sysc_omap3_sham, }, | |
3076 | { .compatible = "ti,sysc-omap-aes", .data = &sysc_omap3_aes, }, | |
3077 | { .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, }, | |
2c63a833 | 3078 | { .compatible = "ti,sysc-dra7-mcasp", .data = &sysc_dra7_mcasp, }, |
70a65240 TL |
3079 | { .compatible = "ti,sysc-usb-host-fs", |
3080 | .data = &sysc_omap4_usb_host_fs, }, | |
7f35e63d | 3081 | { .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, }, |
b2745d92 | 3082 | { .compatible = "ti,sysc-pruss", .data = &sysc_pruss, }, |
0eecc636 TL |
3083 | { }, |
3084 | }; | |
3085 | MODULE_DEVICE_TABLE(of, sysc_match); | |
3086 | ||
3087 | static struct platform_driver sysc_driver = { | |
3088 | .probe = sysc_probe, | |
684be5a4 | 3089 | .remove = sysc_remove, |
0eecc636 TL |
3090 | .driver = { |
3091 | .name = "ti-sysc", | |
3092 | .of_match_table = sysc_match, | |
3093 | .pm = &sysc_pm_ops, | |
3094 | }, | |
3095 | }; | |
2c355ff6 TL |
3096 | |
3097 | static int __init sysc_init(void) | |
3098 | { | |
3099 | bus_register_notifier(&platform_bus_type, &sysc_nb); | |
3100 | ||
3101 | return platform_driver_register(&sysc_driver); | |
3102 | } | |
3103 | module_init(sysc_init); | |
3104 | ||
3105 | static void __exit sysc_exit(void) | |
3106 | { | |
3107 | bus_unregister_notifier(&platform_bus_type, &sysc_nb); | |
3108 | platform_driver_unregister(&sysc_driver); | |
feaa8bae | 3109 | sysc_cleanup_soc(); |
2c355ff6 TL |
3110 | } |
3111 | module_exit(sysc_exit); | |
0eecc636 TL |
3112 | |
3113 | MODULE_DESCRIPTION("TI sysc interconnect target driver"); | |
3114 | MODULE_LICENSE("GPL v2"); |