blob: 791770a563fcce83d5538a52b5cc86bcc7a925c7 [file] [log] [blame]
Boris BREZILLONc84a61d2013-10-17 18:55:41 +02001/*
2 * Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 */
10
11#include <linux/clk-provider.h>
12#include <linux/clkdev.h>
13#include <linux/clk/at91_pmc.h>
14#include <linux/of.h>
Boris Brezillon1bdf0232014-09-07 08:14:29 +020015#include <linux/mfd/syscon.h>
16#include <linux/regmap.h>
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020017
18#include "pmc.h"
19
20#define USB_SOURCE_MAX 2
21
22#define SAM9X5_USB_DIV_SHIFT 8
23#define SAM9X5_USB_MAX_DIV 0xf
24
25#define RM9200_USB_DIV_SHIFT 28
26#define RM9200_USB_DIV_TAB_SIZE 4
27
28struct at91sam9x5_clk_usb {
29 struct clk_hw hw;
Boris Brezillon1bdf0232014-09-07 08:14:29 +020030 struct regmap *regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020031};
32
33#define to_at91sam9x5_clk_usb(hw) \
34 container_of(hw, struct at91sam9x5_clk_usb, hw)
35
36struct at91rm9200_clk_usb {
37 struct clk_hw hw;
Boris Brezillon1bdf0232014-09-07 08:14:29 +020038 struct regmap *regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020039 u32 divisors[4];
40};
41
42#define to_at91rm9200_clk_usb(hw) \
43 container_of(hw, struct at91rm9200_clk_usb, hw)
44
45static unsigned long at91sam9x5_clk_usb_recalc_rate(struct clk_hw *hw,
46 unsigned long parent_rate)
47{
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020048 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris Brezillon1bdf0232014-09-07 08:14:29 +020049 unsigned int usbr;
50 u8 usbdiv;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020051
Boris Brezillon1bdf0232014-09-07 08:14:29 +020052 regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
53 usbdiv = (usbr & AT91_PMC_OHCIUSBDIV) >> SAM9X5_USB_DIV_SHIFT;
Boris Brezillon69daf752014-11-17 14:16:56 +010054
55 return DIV_ROUND_CLOSEST(parent_rate, (usbdiv + 1));
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020056}
57
Boris Brezillon0817b622015-07-07 20:48:08 +020058static int at91sam9x5_clk_usb_determine_rate(struct clk_hw *hw,
59 struct clk_rate_request *req)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020060{
Stephen Boydd0979332015-07-30 17:20:57 -070061 struct clk_hw *parent;
Boris Brezillon45912432015-03-29 03:45:33 +020062 long best_rate = -EINVAL;
63 unsigned long tmp_rate;
64 int best_diff = -1;
65 int tmp_diff;
66 int i;
Boris Brezillon69daf752014-11-17 14:16:56 +010067
Stephen Boyd497295a2015-06-25 16:53:23 -070068 for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
Boris Brezillon45912432015-03-29 03:45:33 +020069 int div;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020070
Stephen Boydd0979332015-07-30 17:20:57 -070071 parent = clk_hw_get_parent_by_index(hw, i);
Boris Brezillon45912432015-03-29 03:45:33 +020072 if (!parent)
73 continue;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020074
Boris Brezillon45912432015-03-29 03:45:33 +020075 for (div = 1; div < SAM9X5_USB_MAX_DIV + 2; div++) {
76 unsigned long tmp_parent_rate;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +020077
Boris Brezillon0817b622015-07-07 20:48:08 +020078 tmp_parent_rate = req->rate * div;
Stephen Boydd0979332015-07-30 17:20:57 -070079 tmp_parent_rate = clk_hw_round_rate(parent,
Boris Brezillon45912432015-03-29 03:45:33 +020080 tmp_parent_rate);
81 tmp_rate = DIV_ROUND_CLOSEST(tmp_parent_rate, div);
Boris Brezillon0817b622015-07-07 20:48:08 +020082 if (tmp_rate < req->rate)
83 tmp_diff = req->rate - tmp_rate;
Boris Brezillon45912432015-03-29 03:45:33 +020084 else
Boris Brezillon0817b622015-07-07 20:48:08 +020085 tmp_diff = tmp_rate - req->rate;
Boris Brezillon45912432015-03-29 03:45:33 +020086
87 if (best_diff < 0 || best_diff > tmp_diff) {
88 best_rate = tmp_rate;
89 best_diff = tmp_diff;
Boris Brezillon0817b622015-07-07 20:48:08 +020090 req->best_parent_rate = tmp_parent_rate;
Stephen Boydd0979332015-07-30 17:20:57 -070091 req->best_parent_hw = parent;
Boris Brezillon45912432015-03-29 03:45:33 +020092 }
93
Boris Brezillon0817b622015-07-07 20:48:08 +020094 if (!best_diff || tmp_rate < req->rate)
Boris Brezillon45912432015-03-29 03:45:33 +020095 break;
96 }
97
98 if (!best_diff)
99 break;
100 }
101
Boris Brezillon0817b622015-07-07 20:48:08 +0200102 if (best_rate < 0)
103 return best_rate;
104
105 req->rate = best_rate;
106 return 0;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200107}
108
109static int at91sam9x5_clk_usb_set_parent(struct clk_hw *hw, u8 index)
110{
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200111 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200112
113 if (index > 1)
114 return -EINVAL;
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200115
116 regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS,
117 index ? AT91_PMC_USBS : 0);
118
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200119 return 0;
120}
121
122static u8 at91sam9x5_clk_usb_get_parent(struct clk_hw *hw)
123{
124 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200125 unsigned int usbr;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200126
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200127 regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
128
129 return usbr & AT91_PMC_USBS;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200130}
131
132static int at91sam9x5_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
133 unsigned long parent_rate)
134{
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200135 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris Brezillon69daf752014-11-17 14:16:56 +0100136 unsigned long div;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200137
Boris Brezillon69daf752014-11-17 14:16:56 +0100138 if (!rate)
139 return -EINVAL;
140
141 div = DIV_ROUND_CLOSEST(parent_rate, rate);
142 if (div > SAM9X5_USB_MAX_DIV + 1 || !div)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200143 return -EINVAL;
144
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200145 regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_OHCIUSBDIV,
146 (div - 1) << SAM9X5_USB_DIV_SHIFT);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200147
148 return 0;
149}
150
151static const struct clk_ops at91sam9x5_usb_ops = {
152 .recalc_rate = at91sam9x5_clk_usb_recalc_rate,
Boris Brezillon45912432015-03-29 03:45:33 +0200153 .determine_rate = at91sam9x5_clk_usb_determine_rate,
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200154 .get_parent = at91sam9x5_clk_usb_get_parent,
155 .set_parent = at91sam9x5_clk_usb_set_parent,
156 .set_rate = at91sam9x5_clk_usb_set_rate,
157};
158
159static int at91sam9n12_clk_usb_enable(struct clk_hw *hw)
160{
161 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200162
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200163 regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS,
164 AT91_PMC_USBS);
165
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200166 return 0;
167}
168
169static void at91sam9n12_clk_usb_disable(struct clk_hw *hw)
170{
171 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200172
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200173 regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS, 0);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200174}
175
176static int at91sam9n12_clk_usb_is_enabled(struct clk_hw *hw)
177{
178 struct at91sam9x5_clk_usb *usb = to_at91sam9x5_clk_usb(hw);
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200179 unsigned int usbr;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200180
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200181 regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
182
183 return usbr & AT91_PMC_USBS;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200184}
185
186static const struct clk_ops at91sam9n12_usb_ops = {
187 .enable = at91sam9n12_clk_usb_enable,
188 .disable = at91sam9n12_clk_usb_disable,
189 .is_enabled = at91sam9n12_clk_usb_is_enabled,
190 .recalc_rate = at91sam9x5_clk_usb_recalc_rate,
Boris Brezillon45912432015-03-29 03:45:33 +0200191 .determine_rate = at91sam9x5_clk_usb_determine_rate,
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200192 .set_rate = at91sam9x5_clk_usb_set_rate,
193};
194
Stephen Boydf5644f12016-06-01 14:31:22 -0700195static struct clk_hw * __init
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200196at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200197 const char **parent_names, u8 num_parents)
198{
199 struct at91sam9x5_clk_usb *usb;
Stephen Boydf5644f12016-06-01 14:31:22 -0700200 struct clk_hw *hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200201 struct clk_init_data init;
Stephen Boydf5644f12016-06-01 14:31:22 -0700202 int ret;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200203
204 usb = kzalloc(sizeof(*usb), GFP_KERNEL);
205 if (!usb)
206 return ERR_PTR(-ENOMEM);
207
208 init.name = name;
209 init.ops = &at91sam9x5_usb_ops;
210 init.parent_names = parent_names;
211 init.num_parents = num_parents;
Boris Brezillon45912432015-03-29 03:45:33 +0200212 init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
213 CLK_SET_RATE_PARENT;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200214
215 usb->hw.init = &init;
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200216 usb->regmap = regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200217
Stephen Boydf5644f12016-06-01 14:31:22 -0700218 hw = &usb->hw;
219 ret = clk_hw_register(NULL, &usb->hw);
220 if (ret) {
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200221 kfree(usb);
Stephen Boydf5644f12016-06-01 14:31:22 -0700222 hw = ERR_PTR(ret);
223 }
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200224
Stephen Boydf5644f12016-06-01 14:31:22 -0700225 return hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200226}
227
Stephen Boydf5644f12016-06-01 14:31:22 -0700228static struct clk_hw * __init
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200229at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200230 const char *parent_name)
231{
232 struct at91sam9x5_clk_usb *usb;
Stephen Boydf5644f12016-06-01 14:31:22 -0700233 struct clk_hw *hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200234 struct clk_init_data init;
Stephen Boydf5644f12016-06-01 14:31:22 -0700235 int ret;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200236
237 usb = kzalloc(sizeof(*usb), GFP_KERNEL);
238 if (!usb)
239 return ERR_PTR(-ENOMEM);
240
241 init.name = name;
242 init.ops = &at91sam9n12_usb_ops;
243 init.parent_names = &parent_name;
244 init.num_parents = 1;
Boris Brezillon45912432015-03-29 03:45:33 +0200245 init.flags = CLK_SET_RATE_GATE | CLK_SET_RATE_PARENT;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200246
247 usb->hw.init = &init;
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200248 usb->regmap = regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200249
Stephen Boydf5644f12016-06-01 14:31:22 -0700250 hw = &usb->hw;
251 ret = clk_hw_register(NULL, &usb->hw);
252 if (ret) {
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200253 kfree(usb);
Stephen Boydf5644f12016-06-01 14:31:22 -0700254 hw = ERR_PTR(ret);
255 }
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200256
Stephen Boydf5644f12016-06-01 14:31:22 -0700257 return hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200258}
259
260static unsigned long at91rm9200_clk_usb_recalc_rate(struct clk_hw *hw,
261 unsigned long parent_rate)
262{
263 struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200264 unsigned int pllbr;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200265 u8 usbdiv;
266
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200267 regmap_read(usb->regmap, AT91_CKGR_PLLBR, &pllbr);
268
269 usbdiv = (pllbr & AT91_PMC_USBDIV) >> RM9200_USB_DIV_SHIFT;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200270 if (usb->divisors[usbdiv])
271 return parent_rate / usb->divisors[usbdiv];
272
273 return 0;
274}
275
276static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
277 unsigned long *parent_rate)
278{
279 struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
Stephen Boydd0979332015-07-30 17:20:57 -0700280 struct clk_hw *parent = clk_hw_get_parent(hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200281 unsigned long bestrate = 0;
282 int bestdiff = -1;
283 unsigned long tmprate;
284 int tmpdiff;
285 int i = 0;
286
Boris BREZILLON13a60732014-09-02 09:50:17 +0200287 for (i = 0; i < RM9200_USB_DIV_TAB_SIZE; i++) {
288 unsigned long tmp_parent_rate;
289
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200290 if (!usb->divisors[i])
291 continue;
Boris BREZILLON13a60732014-09-02 09:50:17 +0200292
293 tmp_parent_rate = rate * usb->divisors[i];
Stephen Boydd0979332015-07-30 17:20:57 -0700294 tmp_parent_rate = clk_hw_round_rate(parent, tmp_parent_rate);
Boris Brezillonff553ea2014-11-14 19:54:49 +0100295 tmprate = DIV_ROUND_CLOSEST(tmp_parent_rate, usb->divisors[i]);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200296 if (tmprate < rate)
297 tmpdiff = rate - tmprate;
298 else
299 tmpdiff = tmprate - rate;
300
301 if (bestdiff < 0 || bestdiff > tmpdiff) {
302 bestrate = tmprate;
303 bestdiff = tmpdiff;
Boris BREZILLON13a60732014-09-02 09:50:17 +0200304 *parent_rate = tmp_parent_rate;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200305 }
306
307 if (!bestdiff)
308 break;
309 }
310
311 return bestrate;
312}
313
314static int at91rm9200_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
315 unsigned long parent_rate)
316{
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200317 int i;
318 struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
Boris BREZILLON16eeaec2014-09-02 09:50:18 +0200319 unsigned long div;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200320
Boris Brezillonff553ea2014-11-14 19:54:49 +0100321 if (!rate)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200322 return -EINVAL;
Boris BREZILLON16eeaec2014-09-02 09:50:18 +0200323
Boris Brezillonff553ea2014-11-14 19:54:49 +0100324 div = DIV_ROUND_CLOSEST(parent_rate, rate);
Boris BREZILLON16eeaec2014-09-02 09:50:18 +0200325
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200326 for (i = 0; i < RM9200_USB_DIV_TAB_SIZE; i++) {
327 if (usb->divisors[i] == div) {
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200328 regmap_update_bits(usb->regmap, AT91_CKGR_PLLBR,
329 AT91_PMC_USBDIV,
330 i << RM9200_USB_DIV_SHIFT);
331
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200332 return 0;
333 }
334 }
335
336 return -EINVAL;
337}
338
339static const struct clk_ops at91rm9200_usb_ops = {
340 .recalc_rate = at91rm9200_clk_usb_recalc_rate,
341 .round_rate = at91rm9200_clk_usb_round_rate,
342 .set_rate = at91rm9200_clk_usb_set_rate,
343};
344
Stephen Boydf5644f12016-06-01 14:31:22 -0700345static struct clk_hw * __init
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200346at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200347 const char *parent_name, const u32 *divisors)
348{
349 struct at91rm9200_clk_usb *usb;
Stephen Boydf5644f12016-06-01 14:31:22 -0700350 struct clk_hw *hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200351 struct clk_init_data init;
Stephen Boydf5644f12016-06-01 14:31:22 -0700352 int ret;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200353
354 usb = kzalloc(sizeof(*usb), GFP_KERNEL);
355 if (!usb)
356 return ERR_PTR(-ENOMEM);
357
358 init.name = name;
359 init.ops = &at91rm9200_usb_ops;
360 init.parent_names = &parent_name;
361 init.num_parents = 1;
Boris BREZILLON13a60732014-09-02 09:50:17 +0200362 init.flags = CLK_SET_RATE_PARENT;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200363
364 usb->hw.init = &init;
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200365 usb->regmap = regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200366 memcpy(usb->divisors, divisors, sizeof(usb->divisors));
367
Stephen Boydf5644f12016-06-01 14:31:22 -0700368 hw = &usb->hw;
369 ret = clk_hw_register(NULL, &usb->hw);
370 if (ret) {
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200371 kfree(usb);
Stephen Boydf5644f12016-06-01 14:31:22 -0700372 hw = ERR_PTR(ret);
373 }
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200374
Stephen Boydf5644f12016-06-01 14:31:22 -0700375 return hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200376}
377
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200378static void __init of_at91sam9x5_clk_usb_setup(struct device_node *np)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200379{
Stephen Boydf5644f12016-06-01 14:31:22 -0700380 struct clk_hw *hw;
Stephen Boyd8c1b1e52016-02-19 17:29:17 -0800381 unsigned int num_parents;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200382 const char *parent_names[USB_SOURCE_MAX];
383 const char *name = np->name;
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200384 struct regmap *regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200385
Geert Uytterhoeven51a43be2015-05-29 11:25:45 +0200386 num_parents = of_clk_get_parent_count(np);
Stephen Boyd8c1b1e52016-02-19 17:29:17 -0800387 if (num_parents == 0 || num_parents > USB_SOURCE_MAX)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200388 return;
389
Dinh Nguyenf0557fb2015-07-06 22:59:01 -0500390 of_clk_parent_fill(np, parent_names, num_parents);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200391
392 of_property_read_string(np, "clock-output-names", &name);
393
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200394 regmap = syscon_node_to_regmap(of_get_parent(np));
395 if (IS_ERR(regmap))
396 return;
397
Stephen Boydf5644f12016-06-01 14:31:22 -0700398 hw = at91sam9x5_clk_register_usb(regmap, name, parent_names,
399 num_parents);
400 if (IS_ERR(hw))
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200401 return;
402
Stephen Boydf5644f12016-06-01 14:31:22 -0700403 of_clk_add_hw_provider(np, of_clk_hw_simple_get, hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200404}
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200405CLK_OF_DECLARE(at91sam9x5_clk_usb, "atmel,at91sam9x5-clk-usb",
406 of_at91sam9x5_clk_usb_setup);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200407
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200408static void __init of_at91sam9n12_clk_usb_setup(struct device_node *np)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200409{
Stephen Boydf5644f12016-06-01 14:31:22 -0700410 struct clk_hw *hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200411 const char *parent_name;
412 const char *name = np->name;
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200413 struct regmap *regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200414
415 parent_name = of_clk_get_parent_name(np, 0);
416 if (!parent_name)
417 return;
418
419 of_property_read_string(np, "clock-output-names", &name);
420
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200421 regmap = syscon_node_to_regmap(of_get_parent(np));
422 if (IS_ERR(regmap))
423 return;
424
Stephen Boydf5644f12016-06-01 14:31:22 -0700425 hw = at91sam9n12_clk_register_usb(regmap, name, parent_name);
426 if (IS_ERR(hw))
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200427 return;
428
Stephen Boydf5644f12016-06-01 14:31:22 -0700429 of_clk_add_hw_provider(np, of_clk_hw_simple_get, hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200430}
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200431CLK_OF_DECLARE(at91sam9n12_clk_usb, "atmel,at91sam9n12-clk-usb",
432 of_at91sam9n12_clk_usb_setup);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200433
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200434static void __init of_at91rm9200_clk_usb_setup(struct device_node *np)
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200435{
Stephen Boydf5644f12016-06-01 14:31:22 -0700436 struct clk_hw *hw;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200437 const char *parent_name;
438 const char *name = np->name;
439 u32 divisors[4] = {0, 0, 0, 0};
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200440 struct regmap *regmap;
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200441
442 parent_name = of_clk_get_parent_name(np, 0);
443 if (!parent_name)
444 return;
445
446 of_property_read_u32_array(np, "atmel,clk-divisors", divisors, 4);
447 if (!divisors[0])
448 return;
449
450 of_property_read_string(np, "clock-output-names", &name);
451
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200452 regmap = syscon_node_to_regmap(of_get_parent(np));
453 if (IS_ERR(regmap))
454 return;
Stephen Boydf5644f12016-06-01 14:31:22 -0700455 hw = at91rm9200_clk_register_usb(regmap, name, parent_name, divisors);
456 if (IS_ERR(hw))
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200457 return;
458
Stephen Boydf5644f12016-06-01 14:31:22 -0700459 of_clk_add_hw_provider(np, of_clk_hw_simple_get, hw);
Boris BREZILLONc84a61d2013-10-17 18:55:41 +0200460}
Boris Brezillon1bdf0232014-09-07 08:14:29 +0200461CLK_OF_DECLARE(at91rm9200_clk_usb, "atmel,at91rm9200-clk-usb",
462 of_at91rm9200_clk_usb_setup);