1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
4 */
5
6 #include <linux/clk-provider.h>
7 #include <linux/err.h>
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/of.h>
11 #include <linux/of_device.h>
12 #include <linux/platform_device.h>
13 #include <soc/qcom/cmd-db.h>
14 #include <soc/qcom/rpmh.h>
15 #include <soc/qcom/tcs.h>
16
17 #include <dt-bindings/clock/qcom,rpmh.h>
18
19 #define CLK_RPMH_ARC_EN_OFFSET 0
20 #define CLK_RPMH_VRM_EN_OFFSET 4
21
22 /**
23 * struct bcm_db - Auxiliary data pertaining to each Bus Clock Manager(BCM)
24 * @unit: divisor used to convert Hz value to an RPMh msg
25 * @width: multiplier used to convert Hz value to an RPMh msg
26 * @vcd: virtual clock domain that this bcm belongs to
27 * @reserved: reserved to pad the struct
28 */
29 struct bcm_db {
30 __le32 unit;
31 __le16 width;
32 u8 vcd;
33 u8 reserved;
34 };
35
36 /**
37 * struct clk_rpmh - individual rpmh clock data structure
38 * @hw: handle between common and hardware-specific interfaces
39 * @res_name: resource name for the rpmh clock
40 * @div: clock divider to compute the clock rate
41 * @res_addr: base address of the rpmh resource within the RPMh
42 * @res_on_val: rpmh clock enable value
43 * @state: rpmh clock requested state
44 * @aggr_state: rpmh clock aggregated state
45 * @last_sent_aggr_state: rpmh clock last aggr state sent to RPMh
46 * @valid_state_mask: mask to determine the state of the rpmh clock
47 * @unit: divisor to convert rate to rpmh msg in magnitudes of Khz
48 * @dev: device to which it is attached
49 * @peer: pointer to the clock rpmh sibling
50 */
51 struct clk_rpmh {
52 struct clk_hw hw;
53 const char *res_name;
54 u8 div;
55 u32 res_addr;
56 u32 res_on_val;
57 u32 state;
58 u32 aggr_state;
59 u32 last_sent_aggr_state;
60 u32 valid_state_mask;
61 u32 unit;
62 struct device *dev;
63 struct clk_rpmh *peer;
64 };
65
66 struct clk_rpmh_desc {
67 struct clk_hw **clks;
68 size_t num_clks;
69 };
70
71 static DEFINE_MUTEX(rpmh_clk_lock);
72
73 #define __DEFINE_CLK_RPMH(_platform, _name, _name_active, _res_name, \
74 _res_en_offset, _res_on, _div) \
75 static struct clk_rpmh _platform##_##_name_active; \
76 static struct clk_rpmh _platform##_##_name = { \
77 .res_name = _res_name, \
78 .res_addr = _res_en_offset, \
79 .res_on_val = _res_on, \
80 .div = _div, \
81 .peer = &_platform##_##_name_active, \
82 .valid_state_mask = (BIT(RPMH_WAKE_ONLY_STATE) | \
83 BIT(RPMH_ACTIVE_ONLY_STATE) | \
84 BIT(RPMH_SLEEP_STATE)), \
85 .hw.init = &(struct clk_init_data){ \
86 .ops = &clk_rpmh_ops, \
87 .name = #_name, \
88 .parent_data = &(const struct clk_parent_data){ \
89 .fw_name = "xo", \
90 .name = "xo_board", \
91 }, \
92 .num_parents = 1, \
93 }, \
94 }; \
95 static struct clk_rpmh _platform##_##_name_active = { \
96 .res_name = _res_name, \
97 .res_addr = _res_en_offset, \
98 .res_on_val = _res_on, \
99 .div = _div, \
100 .peer = &_platform##_##_name, \
101 .valid_state_mask = (BIT(RPMH_WAKE_ONLY_STATE) | \
102 BIT(RPMH_ACTIVE_ONLY_STATE)), \
103 .hw.init = &(struct clk_init_data){ \
104 .ops = &clk_rpmh_ops, \
105 .name = #_name_active, \
106 .parent_data = &(const struct clk_parent_data){ \
107 .fw_name = "xo", \
108 .name = "xo_board", \
109 }, \
110 .num_parents = 1, \
111 }, \
112 }
113
114 #define DEFINE_CLK_RPMH_ARC(_platform, _name, _name_active, _res_name, \
115 _res_on, _div) \
116 __DEFINE_CLK_RPMH(_platform, _name, _name_active, _res_name, \
117 CLK_RPMH_ARC_EN_OFFSET, _res_on, _div)
118
119 #define DEFINE_CLK_RPMH_VRM(_platform, _name, _name_active, _res_name, \
120 _div) \
121 __DEFINE_CLK_RPMH(_platform, _name, _name_active, _res_name, \
122 CLK_RPMH_VRM_EN_OFFSET, 1, _div)
123
124 #define DEFINE_CLK_RPMH_BCM(_platform, _name, _res_name) \
125 static struct clk_rpmh _platform##_##_name = { \
126 .res_name = _res_name, \
127 .valid_state_mask = BIT(RPMH_ACTIVE_ONLY_STATE), \
128 .div = 1, \
129 .hw.init = &(struct clk_init_data){ \
130 .ops = &clk_rpmh_bcm_ops, \
131 .name = #_name, \
132 }, \
133 }
134
to_clk_rpmh(struct clk_hw * _hw)135 static inline struct clk_rpmh *to_clk_rpmh(struct clk_hw *_hw)
136 {
137 return container_of(_hw, struct clk_rpmh, hw);
138 }
139
has_state_changed(struct clk_rpmh * c,u32 state)140 static inline bool has_state_changed(struct clk_rpmh *c, u32 state)
141 {
142 return (c->last_sent_aggr_state & BIT(state))
143 != (c->aggr_state & BIT(state));
144 }
145
clk_rpmh_send(struct clk_rpmh * c,enum rpmh_state state,struct tcs_cmd * cmd,bool wait)146 static int clk_rpmh_send(struct clk_rpmh *c, enum rpmh_state state,
147 struct tcs_cmd *cmd, bool wait)
148 {
149 if (wait)
150 return rpmh_write(c->dev, state, cmd, 1);
151
152 return rpmh_write_async(c->dev, state, cmd, 1);
153 }
154
clk_rpmh_send_aggregate_command(struct clk_rpmh * c)155 static int clk_rpmh_send_aggregate_command(struct clk_rpmh *c)
156 {
157 struct tcs_cmd cmd = { 0 };
158 u32 cmd_state, on_val;
159 enum rpmh_state state = RPMH_SLEEP_STATE;
160 int ret;
161 bool wait;
162
163 cmd.addr = c->res_addr;
164 cmd_state = c->aggr_state;
165 on_val = c->res_on_val;
166
167 for (; state <= RPMH_ACTIVE_ONLY_STATE; state++) {
168 if (has_state_changed(c, state)) {
169 if (cmd_state & BIT(state))
170 cmd.data = on_val;
171
172 wait = cmd_state && state == RPMH_ACTIVE_ONLY_STATE;
173 ret = clk_rpmh_send(c, state, &cmd, wait);
174 if (ret) {
175 dev_err(c->dev, "set %s state of %s failed: (%d)\n",
176 !state ? "sleep" :
177 state == RPMH_WAKE_ONLY_STATE ?
178 "wake" : "active", c->res_name, ret);
179 return ret;
180 }
181 }
182 }
183
184 c->last_sent_aggr_state = c->aggr_state;
185 c->peer->last_sent_aggr_state = c->last_sent_aggr_state;
186
187 return 0;
188 }
189
190 /*
191 * Update state and aggregate state values based on enable value.
192 */
clk_rpmh_aggregate_state_send_command(struct clk_rpmh * c,bool enable)193 static int clk_rpmh_aggregate_state_send_command(struct clk_rpmh *c,
194 bool enable)
195 {
196 int ret;
197
198 c->state = enable ? c->valid_state_mask : 0;
199 c->aggr_state = c->state | c->peer->state;
200 c->peer->aggr_state = c->aggr_state;
201
202 ret = clk_rpmh_send_aggregate_command(c);
203 if (!ret)
204 return 0;
205
206 if (ret && enable)
207 c->state = 0;
208 else if (ret)
209 c->state = c->valid_state_mask;
210
211 WARN(1, "clk: %s failed to %s\n", c->res_name,
212 enable ? "enable" : "disable");
213 return ret;
214 }
215
clk_rpmh_prepare(struct clk_hw * hw)216 static int clk_rpmh_prepare(struct clk_hw *hw)
217 {
218 struct clk_rpmh *c = to_clk_rpmh(hw);
219 int ret = 0;
220
221 mutex_lock(&rpmh_clk_lock);
222 ret = clk_rpmh_aggregate_state_send_command(c, true);
223 mutex_unlock(&rpmh_clk_lock);
224
225 return ret;
226 }
227
clk_rpmh_unprepare(struct clk_hw * hw)228 static void clk_rpmh_unprepare(struct clk_hw *hw)
229 {
230 struct clk_rpmh *c = to_clk_rpmh(hw);
231
232 mutex_lock(&rpmh_clk_lock);
233 clk_rpmh_aggregate_state_send_command(c, false);
234 mutex_unlock(&rpmh_clk_lock);
235 };
236
clk_rpmh_recalc_rate(struct clk_hw * hw,unsigned long prate)237 static unsigned long clk_rpmh_recalc_rate(struct clk_hw *hw,
238 unsigned long prate)
239 {
240 struct clk_rpmh *r = to_clk_rpmh(hw);
241
242 /*
243 * RPMh clocks have a fixed rate. Return static rate.
244 */
245 return prate / r->div;
246 }
247
248 static const struct clk_ops clk_rpmh_ops = {
249 .prepare = clk_rpmh_prepare,
250 .unprepare = clk_rpmh_unprepare,
251 .recalc_rate = clk_rpmh_recalc_rate,
252 };
253
clk_rpmh_bcm_send_cmd(struct clk_rpmh * c,bool enable)254 static int clk_rpmh_bcm_send_cmd(struct clk_rpmh *c, bool enable)
255 {
256 struct tcs_cmd cmd = { 0 };
257 u32 cmd_state;
258 int ret = 0;
259
260 mutex_lock(&rpmh_clk_lock);
261 if (enable) {
262 cmd_state = 1;
263 if (c->aggr_state)
264 cmd_state = c->aggr_state;
265 } else {
266 cmd_state = 0;
267 }
268
269 if (c->last_sent_aggr_state != cmd_state) {
270 cmd.addr = c->res_addr;
271 cmd.data = BCM_TCS_CMD(1, enable, 0, cmd_state);
272
273 /*
274 * Send only an active only state request. RPMh continues to
275 * use the active state when we're in sleep/wake state as long
276 * as the sleep/wake state has never been set.
277 */
278 ret = clk_rpmh_send(c, RPMH_ACTIVE_ONLY_STATE, &cmd, enable);
279 if (ret) {
280 dev_err(c->dev, "set active state of %s failed: (%d)\n",
281 c->res_name, ret);
282 } else {
283 c->last_sent_aggr_state = cmd_state;
284 }
285 }
286
287 mutex_unlock(&rpmh_clk_lock);
288
289 return ret;
290 }
291
clk_rpmh_bcm_prepare(struct clk_hw * hw)292 static int clk_rpmh_bcm_prepare(struct clk_hw *hw)
293 {
294 struct clk_rpmh *c = to_clk_rpmh(hw);
295
296 return clk_rpmh_bcm_send_cmd(c, true);
297 }
298
clk_rpmh_bcm_unprepare(struct clk_hw * hw)299 static void clk_rpmh_bcm_unprepare(struct clk_hw *hw)
300 {
301 struct clk_rpmh *c = to_clk_rpmh(hw);
302
303 clk_rpmh_bcm_send_cmd(c, false);
304 }
305
clk_rpmh_bcm_set_rate(struct clk_hw * hw,unsigned long rate,unsigned long parent_rate)306 static int clk_rpmh_bcm_set_rate(struct clk_hw *hw, unsigned long rate,
307 unsigned long parent_rate)
308 {
309 struct clk_rpmh *c = to_clk_rpmh(hw);
310
311 c->aggr_state = rate / c->unit;
312 /*
313 * Since any non-zero value sent to hw would result in enabling the
314 * clock, only send the value if the clock has already been prepared.
315 */
316 if (clk_hw_is_prepared(hw))
317 clk_rpmh_bcm_send_cmd(c, true);
318
319 return 0;
320 }
321
clk_rpmh_round_rate(struct clk_hw * hw,unsigned long rate,unsigned long * parent_rate)322 static long clk_rpmh_round_rate(struct clk_hw *hw, unsigned long rate,
323 unsigned long *parent_rate)
324 {
325 return rate;
326 }
327
clk_rpmh_bcm_recalc_rate(struct clk_hw * hw,unsigned long prate)328 static unsigned long clk_rpmh_bcm_recalc_rate(struct clk_hw *hw,
329 unsigned long prate)
330 {
331 struct clk_rpmh *c = to_clk_rpmh(hw);
332
333 return c->aggr_state * c->unit;
334 }
335
336 static const struct clk_ops clk_rpmh_bcm_ops = {
337 .prepare = clk_rpmh_bcm_prepare,
338 .unprepare = clk_rpmh_bcm_unprepare,
339 .set_rate = clk_rpmh_bcm_set_rate,
340 .round_rate = clk_rpmh_round_rate,
341 .recalc_rate = clk_rpmh_bcm_recalc_rate,
342 };
343
344 /* Resource name must match resource id present in cmd-db */
345 DEFINE_CLK_RPMH_ARC(sdm845, bi_tcxo, bi_tcxo_ao, "xo.lvl", 0x3, 2);
346 DEFINE_CLK_RPMH_VRM(sdm845, ln_bb_clk2, ln_bb_clk2_ao, "lnbclka2", 2);
347 DEFINE_CLK_RPMH_VRM(sdm845, ln_bb_clk3, ln_bb_clk3_ao, "lnbclka3", 2);
348 DEFINE_CLK_RPMH_VRM(sdm845, rf_clk1, rf_clk1_ao, "rfclka1", 1);
349 DEFINE_CLK_RPMH_VRM(sdm845, rf_clk2, rf_clk2_ao, "rfclka2", 1);
350 DEFINE_CLK_RPMH_VRM(sdm845, rf_clk3, rf_clk3_ao, "rfclka3", 1);
351 DEFINE_CLK_RPMH_VRM(sm8150, rf_clk3, rf_clk3_ao, "rfclka3", 1);
352 DEFINE_CLK_RPMH_VRM(sc8180x, rf_clk1, rf_clk1_ao, "rfclkd1", 1);
353 DEFINE_CLK_RPMH_VRM(sc8180x, rf_clk2, rf_clk2_ao, "rfclkd2", 1);
354 DEFINE_CLK_RPMH_VRM(sc8180x, rf_clk3, rf_clk3_ao, "rfclkd3", 1);
355 DEFINE_CLK_RPMH_VRM(sc8180x, rf_clk4, rf_clk4_ao, "rfclkd4", 1);
356 DEFINE_CLK_RPMH_BCM(sdm845, ipa, "IP0");
357 DEFINE_CLK_RPMH_BCM(sdm845, ce, "CE0");
358
359 static struct clk_hw *sdm845_rpmh_clocks[] = {
360 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
361 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
362 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
363 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
364 [RPMH_LN_BB_CLK3] = &sdm845_ln_bb_clk3.hw,
365 [RPMH_LN_BB_CLK3_A] = &sdm845_ln_bb_clk3_ao.hw,
366 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
367 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
368 [RPMH_RF_CLK2] = &sdm845_rf_clk2.hw,
369 [RPMH_RF_CLK2_A] = &sdm845_rf_clk2_ao.hw,
370 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
371 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
372 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
373 [RPMH_CE_CLK] = &sdm845_ce.hw,
374 };
375
376 static const struct clk_rpmh_desc clk_rpmh_sdm845 = {
377 .clks = sdm845_rpmh_clocks,
378 .num_clks = ARRAY_SIZE(sdm845_rpmh_clocks),
379 };
380
381 static struct clk_hw *sdm670_rpmh_clocks[] = {
382 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
383 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
384 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
385 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
386 [RPMH_LN_BB_CLK3] = &sdm845_ln_bb_clk3.hw,
387 [RPMH_LN_BB_CLK3_A] = &sdm845_ln_bb_clk3_ao.hw,
388 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
389 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
390 [RPMH_RF_CLK2] = &sdm845_rf_clk2.hw,
391 [RPMH_RF_CLK2_A] = &sdm845_rf_clk2_ao.hw,
392 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
393 [RPMH_CE_CLK] = &sdm845_ce.hw,
394 };
395
396 static const struct clk_rpmh_desc clk_rpmh_sdm670 = {
397 .clks = sdm670_rpmh_clocks,
398 .num_clks = ARRAY_SIZE(sdm670_rpmh_clocks),
399 };
400
401 DEFINE_CLK_RPMH_VRM(sdx55, rf_clk1, rf_clk1_ao, "rfclkd1", 1);
402 DEFINE_CLK_RPMH_VRM(sdx55, rf_clk2, rf_clk2_ao, "rfclkd2", 1);
403 DEFINE_CLK_RPMH_BCM(sdx55, qpic_clk, "QP0");
404 DEFINE_CLK_RPMH_BCM(sdx55, ipa, "IP0");
405
406 static struct clk_hw *sdx55_rpmh_clocks[] = {
407 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
408 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
409 [RPMH_RF_CLK1] = &sdx55_rf_clk1.hw,
410 [RPMH_RF_CLK1_A] = &sdx55_rf_clk1_ao.hw,
411 [RPMH_RF_CLK2] = &sdx55_rf_clk2.hw,
412 [RPMH_RF_CLK2_A] = &sdx55_rf_clk2_ao.hw,
413 [RPMH_QPIC_CLK] = &sdx55_qpic_clk.hw,
414 [RPMH_IPA_CLK] = &sdx55_ipa.hw,
415 };
416
417 static const struct clk_rpmh_desc clk_rpmh_sdx55 = {
418 .clks = sdx55_rpmh_clocks,
419 .num_clks = ARRAY_SIZE(sdx55_rpmh_clocks),
420 };
421
422 static struct clk_hw *sm8150_rpmh_clocks[] = {
423 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
424 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
425 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
426 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
427 [RPMH_LN_BB_CLK3] = &sdm845_ln_bb_clk3.hw,
428 [RPMH_LN_BB_CLK3_A] = &sdm845_ln_bb_clk3_ao.hw,
429 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
430 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
431 [RPMH_RF_CLK2] = &sdm845_rf_clk2.hw,
432 [RPMH_RF_CLK2_A] = &sdm845_rf_clk2_ao.hw,
433 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
434 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
435 };
436
437 static const struct clk_rpmh_desc clk_rpmh_sm8150 = {
438 .clks = sm8150_rpmh_clocks,
439 .num_clks = ARRAY_SIZE(sm8150_rpmh_clocks),
440 };
441
442 static struct clk_hw *sc7180_rpmh_clocks[] = {
443 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
444 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
445 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
446 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
447 [RPMH_LN_BB_CLK3] = &sdm845_ln_bb_clk3.hw,
448 [RPMH_LN_BB_CLK3_A] = &sdm845_ln_bb_clk3_ao.hw,
449 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
450 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
451 [RPMH_RF_CLK2] = &sdm845_rf_clk2.hw,
452 [RPMH_RF_CLK2_A] = &sdm845_rf_clk2_ao.hw,
453 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
454 };
455
456 static const struct clk_rpmh_desc clk_rpmh_sc7180 = {
457 .clks = sc7180_rpmh_clocks,
458 .num_clks = ARRAY_SIZE(sc7180_rpmh_clocks),
459 };
460
461 static struct clk_hw *sc8180x_rpmh_clocks[] = {
462 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
463 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
464 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
465 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
466 [RPMH_LN_BB_CLK3] = &sdm845_ln_bb_clk3.hw,
467 [RPMH_LN_BB_CLK3_A] = &sdm845_ln_bb_clk3_ao.hw,
468 [RPMH_RF_CLK1] = &sc8180x_rf_clk1.hw,
469 [RPMH_RF_CLK1_A] = &sc8180x_rf_clk1_ao.hw,
470 [RPMH_RF_CLK2] = &sc8180x_rf_clk2.hw,
471 [RPMH_RF_CLK2_A] = &sc8180x_rf_clk2_ao.hw,
472 [RPMH_RF_CLK3] = &sc8180x_rf_clk3.hw,
473 [RPMH_RF_CLK3_A] = &sc8180x_rf_clk3_ao.hw,
474 };
475
476 static const struct clk_rpmh_desc clk_rpmh_sc8180x = {
477 .clks = sc8180x_rpmh_clocks,
478 .num_clks = ARRAY_SIZE(sc8180x_rpmh_clocks),
479 };
480
481 DEFINE_CLK_RPMH_VRM(sm8250, ln_bb_clk1, ln_bb_clk1_ao, "lnbclka1", 2);
482
483 static struct clk_hw *sm8250_rpmh_clocks[] = {
484 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
485 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
486 [RPMH_LN_BB_CLK1] = &sm8250_ln_bb_clk1.hw,
487 [RPMH_LN_BB_CLK1_A] = &sm8250_ln_bb_clk1_ao.hw,
488 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
489 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
490 [RPMH_LN_BB_CLK3] = &sdm845_ln_bb_clk3.hw,
491 [RPMH_LN_BB_CLK3_A] = &sdm845_ln_bb_clk3_ao.hw,
492 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
493 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
494 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
495 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
496 };
497
498 static const struct clk_rpmh_desc clk_rpmh_sm8250 = {
499 .clks = sm8250_rpmh_clocks,
500 .num_clks = ARRAY_SIZE(sm8250_rpmh_clocks),
501 };
502
503 DEFINE_CLK_RPMH_VRM(sm8350, div_clk1, div_clk1_ao, "divclka1", 2);
504 DEFINE_CLK_RPMH_VRM(sm8350, rf_clk4, rf_clk4_ao, "rfclka4", 1);
505 DEFINE_CLK_RPMH_VRM(sm8350, rf_clk5, rf_clk5_ao, "rfclka5", 1);
506 DEFINE_CLK_RPMH_BCM(sm8350, pka, "PKA0");
507 DEFINE_CLK_RPMH_BCM(sm8350, hwkm, "HK0");
508
509 static struct clk_hw *sm8350_rpmh_clocks[] = {
510 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
511 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
512 [RPMH_DIV_CLK1] = &sm8350_div_clk1.hw,
513 [RPMH_DIV_CLK1_A] = &sm8350_div_clk1_ao.hw,
514 [RPMH_LN_BB_CLK1] = &sm8250_ln_bb_clk1.hw,
515 [RPMH_LN_BB_CLK1_A] = &sm8250_ln_bb_clk1_ao.hw,
516 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
517 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
518 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
519 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
520 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
521 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
522 [RPMH_RF_CLK4] = &sm8350_rf_clk4.hw,
523 [RPMH_RF_CLK4_A] = &sm8350_rf_clk4_ao.hw,
524 [RPMH_RF_CLK5] = &sm8350_rf_clk5.hw,
525 [RPMH_RF_CLK5_A] = &sm8350_rf_clk5_ao.hw,
526 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
527 [RPMH_PKA_CLK] = &sm8350_pka.hw,
528 [RPMH_HWKM_CLK] = &sm8350_hwkm.hw,
529 };
530
531 static const struct clk_rpmh_desc clk_rpmh_sm8350 = {
532 .clks = sm8350_rpmh_clocks,
533 .num_clks = ARRAY_SIZE(sm8350_rpmh_clocks),
534 };
535
536 DEFINE_CLK_RPMH_VRM(sc8280xp, ln_bb_clk3, ln_bb_clk3_ao, "lnbclka3", 2);
537
538 static struct clk_hw *sc8280xp_rpmh_clocks[] = {
539 [RPMH_CXO_CLK] = &sdm845_bi_tcxo.hw,
540 [RPMH_CXO_CLK_A] = &sdm845_bi_tcxo_ao.hw,
541 [RPMH_LN_BB_CLK3] = &sc8280xp_ln_bb_clk3.hw,
542 [RPMH_LN_BB_CLK3_A] = &sc8280xp_ln_bb_clk3_ao.hw,
543 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
544 [RPMH_PKA_CLK] = &sm8350_pka.hw,
545 [RPMH_HWKM_CLK] = &sm8350_hwkm.hw,
546 };
547
548 static const struct clk_rpmh_desc clk_rpmh_sc8280xp = {
549 .clks = sc8280xp_rpmh_clocks,
550 .num_clks = ARRAY_SIZE(sc8280xp_rpmh_clocks),
551 };
552
553 /* Resource name must match resource id present in cmd-db */
554 DEFINE_CLK_RPMH_ARC(sc7280, bi_tcxo, bi_tcxo_ao, "xo.lvl", 0x3, 4);
555
556 DEFINE_CLK_RPMH_VRM(sm8450, ln_bb_clk1, ln_bb_clk1_ao, "lnbclka1", 4);
557 DEFINE_CLK_RPMH_VRM(sm8450, ln_bb_clk2, ln_bb_clk2_ao, "lnbclka2", 4);
558
559 static struct clk_hw *sm8450_rpmh_clocks[] = {
560 [RPMH_CXO_CLK] = &sc7280_bi_tcxo.hw,
561 [RPMH_CXO_CLK_A] = &sc7280_bi_tcxo_ao.hw,
562 [RPMH_LN_BB_CLK1] = &sm8450_ln_bb_clk1.hw,
563 [RPMH_LN_BB_CLK1_A] = &sm8450_ln_bb_clk1_ao.hw,
564 [RPMH_LN_BB_CLK2] = &sm8450_ln_bb_clk2.hw,
565 [RPMH_LN_BB_CLK2_A] = &sm8450_ln_bb_clk2_ao.hw,
566 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
567 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
568 [RPMH_RF_CLK2] = &sdm845_rf_clk2.hw,
569 [RPMH_RF_CLK2_A] = &sdm845_rf_clk2_ao.hw,
570 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
571 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
572 [RPMH_RF_CLK4] = &sm8350_rf_clk4.hw,
573 [RPMH_RF_CLK4_A] = &sm8350_rf_clk4_ao.hw,
574 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
575 };
576
577 static const struct clk_rpmh_desc clk_rpmh_sm8450 = {
578 .clks = sm8450_rpmh_clocks,
579 .num_clks = ARRAY_SIZE(sm8450_rpmh_clocks),
580 };
581
582 static struct clk_hw *sc7280_rpmh_clocks[] = {
583 [RPMH_CXO_CLK] = &sc7280_bi_tcxo.hw,
584 [RPMH_CXO_CLK_A] = &sc7280_bi_tcxo_ao.hw,
585 [RPMH_LN_BB_CLK2] = &sdm845_ln_bb_clk2.hw,
586 [RPMH_LN_BB_CLK2_A] = &sdm845_ln_bb_clk2_ao.hw,
587 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
588 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
589 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
590 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
591 [RPMH_RF_CLK4] = &sm8350_rf_clk4.hw,
592 [RPMH_RF_CLK4_A] = &sm8350_rf_clk4_ao.hw,
593 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
594 [RPMH_PKA_CLK] = &sm8350_pka.hw,
595 [RPMH_HWKM_CLK] = &sm8350_hwkm.hw,
596 };
597
598 static const struct clk_rpmh_desc clk_rpmh_sc7280 = {
599 .clks = sc7280_rpmh_clocks,
600 .num_clks = ARRAY_SIZE(sc7280_rpmh_clocks),
601 };
602
603 DEFINE_CLK_RPMH_VRM(sm6350, ln_bb_clk2, ln_bb_clk2_ao, "lnbclkg2", 4);
604 DEFINE_CLK_RPMH_VRM(sm6350, ln_bb_clk3, ln_bb_clk3_ao, "lnbclkg3", 4);
605 DEFINE_CLK_RPMH_ARC(sm6350, qlink, qlink_ao, "qphy.lvl", 0x1, 4);
606
607 static struct clk_hw *sm6350_rpmh_clocks[] = {
608 [RPMH_CXO_CLK] = &sc7280_bi_tcxo.hw,
609 [RPMH_CXO_CLK_A] = &sc7280_bi_tcxo_ao.hw,
610 [RPMH_LN_BB_CLK2] = &sm6350_ln_bb_clk2.hw,
611 [RPMH_LN_BB_CLK2_A] = &sm6350_ln_bb_clk2_ao.hw,
612 [RPMH_LN_BB_CLK3] = &sm6350_ln_bb_clk3.hw,
613 [RPMH_LN_BB_CLK3_A] = &sm6350_ln_bb_clk3_ao.hw,
614 [RPMH_QLINK_CLK] = &sm6350_qlink.hw,
615 [RPMH_QLINK_CLK_A] = &sm6350_qlink_ao.hw,
616 };
617
618 static const struct clk_rpmh_desc clk_rpmh_sm6350 = {
619 .clks = sm6350_rpmh_clocks,
620 .num_clks = ARRAY_SIZE(sm6350_rpmh_clocks),
621 };
622
623 DEFINE_CLK_RPMH_VRM(sdx65, ln_bb_clk1, ln_bb_clk1_ao, "lnbclka1", 4);
624
625 static struct clk_hw *sdx65_rpmh_clocks[] = {
626 [RPMH_CXO_CLK] = &sc7280_bi_tcxo.hw,
627 [RPMH_CXO_CLK_A] = &sc7280_bi_tcxo_ao.hw,
628 [RPMH_LN_BB_CLK1] = &sdx65_ln_bb_clk1.hw,
629 [RPMH_LN_BB_CLK1_A] = &sdx65_ln_bb_clk1_ao.hw,
630 [RPMH_RF_CLK1] = &sdm845_rf_clk1.hw,
631 [RPMH_RF_CLK1_A] = &sdm845_rf_clk1_ao.hw,
632 [RPMH_RF_CLK2] = &sdm845_rf_clk2.hw,
633 [RPMH_RF_CLK2_A] = &sdm845_rf_clk2_ao.hw,
634 [RPMH_RF_CLK3] = &sdm845_rf_clk3.hw,
635 [RPMH_RF_CLK3_A] = &sdm845_rf_clk3_ao.hw,
636 [RPMH_RF_CLK4] = &sm8350_rf_clk4.hw,
637 [RPMH_RF_CLK4_A] = &sm8350_rf_clk4_ao.hw,
638 [RPMH_IPA_CLK] = &sdm845_ipa.hw,
639 [RPMH_QPIC_CLK] = &sdx55_qpic_clk.hw,
640 };
641
642 static const struct clk_rpmh_desc clk_rpmh_sdx65 = {
643 .clks = sdx65_rpmh_clocks,
644 .num_clks = ARRAY_SIZE(sdx65_rpmh_clocks),
645 };
646
of_clk_rpmh_hw_get(struct of_phandle_args * clkspec,void * data)647 static struct clk_hw *of_clk_rpmh_hw_get(struct of_phandle_args *clkspec,
648 void *data)
649 {
650 struct clk_rpmh_desc *rpmh = data;
651 unsigned int idx = clkspec->args[0];
652
653 if (idx >= rpmh->num_clks) {
654 pr_err("%s: invalid index %u\n", __func__, idx);
655 return ERR_PTR(-EINVAL);
656 }
657
658 return rpmh->clks[idx];
659 }
660
clk_rpmh_probe(struct platform_device * pdev)661 static int clk_rpmh_probe(struct platform_device *pdev)
662 {
663 struct clk_hw **hw_clks;
664 struct clk_rpmh *rpmh_clk;
665 const struct clk_rpmh_desc *desc;
666 int ret, i;
667
668 desc = of_device_get_match_data(&pdev->dev);
669 if (!desc)
670 return -ENODEV;
671
672 hw_clks = desc->clks;
673
674 for (i = 0; i < desc->num_clks; i++) {
675 const char *name;
676 u32 res_addr;
677 size_t aux_data_len;
678 const struct bcm_db *data;
679
680 if (!hw_clks[i])
681 continue;
682
683 name = hw_clks[i]->init->name;
684
685 rpmh_clk = to_clk_rpmh(hw_clks[i]);
686 res_addr = cmd_db_read_addr(rpmh_clk->res_name);
687 if (!res_addr) {
688 dev_err(&pdev->dev, "missing RPMh resource address for %s\n",
689 rpmh_clk->res_name);
690 return -ENODEV;
691 }
692
693 data = cmd_db_read_aux_data(rpmh_clk->res_name, &aux_data_len);
694 if (IS_ERR(data)) {
695 ret = PTR_ERR(data);
696 dev_err(&pdev->dev,
697 "error reading RPMh aux data for %s (%d)\n",
698 rpmh_clk->res_name, ret);
699 return ret;
700 }
701
702 /* Convert unit from Khz to Hz */
703 if (aux_data_len == sizeof(*data))
704 rpmh_clk->unit = le32_to_cpu(data->unit) * 1000ULL;
705
706 rpmh_clk->res_addr += res_addr;
707 rpmh_clk->dev = &pdev->dev;
708
709 ret = devm_clk_hw_register(&pdev->dev, hw_clks[i]);
710 if (ret) {
711 dev_err(&pdev->dev, "failed to register %s\n", name);
712 return ret;
713 }
714 }
715
716 /* typecast to silence compiler warning */
717 ret = devm_of_clk_add_hw_provider(&pdev->dev, of_clk_rpmh_hw_get,
718 (void *)desc);
719 if (ret) {
720 dev_err(&pdev->dev, "Failed to add clock provider\n");
721 return ret;
722 }
723
724 dev_dbg(&pdev->dev, "Registered RPMh clocks\n");
725
726 return 0;
727 }
728
729 static const struct of_device_id clk_rpmh_match_table[] = {
730 { .compatible = "qcom,sc7180-rpmh-clk", .data = &clk_rpmh_sc7180},
731 { .compatible = "qcom,sc8180x-rpmh-clk", .data = &clk_rpmh_sc8180x},
732 { .compatible = "qcom,sc8280xp-rpmh-clk", .data = &clk_rpmh_sc8280xp},
733 { .compatible = "qcom,sdm845-rpmh-clk", .data = &clk_rpmh_sdm845},
734 { .compatible = "qcom,sdm670-rpmh-clk", .data = &clk_rpmh_sdm670},
735 { .compatible = "qcom,sdx55-rpmh-clk", .data = &clk_rpmh_sdx55},
736 { .compatible = "qcom,sdx65-rpmh-clk", .data = &clk_rpmh_sdx65},
737 { .compatible = "qcom,sm6350-rpmh-clk", .data = &clk_rpmh_sm6350},
738 { .compatible = "qcom,sm8150-rpmh-clk", .data = &clk_rpmh_sm8150},
739 { .compatible = "qcom,sm8250-rpmh-clk", .data = &clk_rpmh_sm8250},
740 { .compatible = "qcom,sm8350-rpmh-clk", .data = &clk_rpmh_sm8350},
741 { .compatible = "qcom,sm8450-rpmh-clk", .data = &clk_rpmh_sm8450},
742 { .compatible = "qcom,sc7280-rpmh-clk", .data = &clk_rpmh_sc7280},
743 { }
744 };
745 MODULE_DEVICE_TABLE(of, clk_rpmh_match_table);
746
747 static struct platform_driver clk_rpmh_driver = {
748 .probe = clk_rpmh_probe,
749 .driver = {
750 .name = "clk-rpmh",
751 .of_match_table = clk_rpmh_match_table,
752 },
753 };
754
clk_rpmh_init(void)755 static int __init clk_rpmh_init(void)
756 {
757 return platform_driver_register(&clk_rpmh_driver);
758 }
759 core_initcall(clk_rpmh_init);
760
clk_rpmh_exit(void)761 static void __exit clk_rpmh_exit(void)
762 {
763 platform_driver_unregister(&clk_rpmh_driver);
764 }
765 module_exit(clk_rpmh_exit);
766
767 MODULE_DESCRIPTION("QCOM RPMh Clock Driver");
768 MODULE_LICENSE("GPL v2");
769