1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * CS2000 -- CIRRUS LOGIC Fractional-N Clock Synthesizer & Clock Multiplier |
4 | * |
5 | * Copyright (C) 2015 Renesas Electronics Corporation |
6 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
7 | */ |
8 | #include <linux/clk-provider.h> |
9 | #include <linux/delay.h> |
10 | #include <linux/clk.h> |
11 | #include <linux/i2c.h> |
12 | #include <linux/of.h> |
13 | #include <linux/module.h> |
14 | #include <linux/regmap.h> |
15 | |
16 | #define CH_MAX 4 |
17 | #define RATIO_REG_SIZE 4 |
18 | |
19 | #define DEVICE_ID 0x1 |
20 | #define DEVICE_CTRL 0x2 |
21 | #define DEVICE_CFG1 0x3 |
22 | #define DEVICE_CFG2 0x4 |
23 | #define GLOBAL_CFG 0x5 |
24 | #define Ratio_Add(x, nth) (6 + (x * 4) + (nth)) |
25 | #define Ratio_Val(x, nth) ((x >> (24 - (8 * nth))) & 0xFF) |
26 | #define Val_Ratio(x, nth) ((x & 0xFF) << (24 - (8 * nth))) |
27 | #define FUNC_CFG1 0x16 |
28 | #define FUNC_CFG2 0x17 |
29 | |
30 | /* DEVICE_ID */ |
31 | #define REVISION_MASK (0x7) |
32 | #define REVISION_B2_B3 (0x4) |
33 | #define REVISION_C1 (0x6) |
34 | |
35 | /* DEVICE_CTRL */ |
36 | #define PLL_UNLOCK (1 << 7) |
37 | #define AUXOUTDIS (1 << 1) |
38 | #define CLKOUTDIS (1 << 0) |
39 | |
40 | /* DEVICE_CFG1 */ |
41 | #define RSEL(x) (((x) & 0x3) << 3) |
42 | #define RSEL_MASK RSEL(0x3) |
43 | #define AUXOUTSRC(x) (((x) & 0x3) << 1) |
44 | #define AUXOUTSRC_MASK AUXOUTSRC(0x3) |
45 | #define ENDEV1 (0x1) |
46 | |
47 | /* DEVICE_CFG2 */ |
48 | #define AUTORMOD (1 << 3) |
49 | #define LOCKCLK(x) (((x) & 0x3) << 1) |
50 | #define LOCKCLK_MASK LOCKCLK(0x3) |
51 | #define FRACNSRC_MASK (1 << 0) |
52 | #define FRACNSRC_STATIC (0 << 0) |
53 | #define FRACNSRC_DYNAMIC (1 << 0) |
54 | |
55 | /* GLOBAL_CFG */ |
56 | #define FREEZE (1 << 7) |
57 | #define ENDEV2 (0x1) |
58 | |
59 | /* FUNC_CFG1 */ |
60 | #define CLKSKIPEN (1 << 7) |
61 | #define REFCLKDIV(x) (((x) & 0x3) << 3) |
62 | #define REFCLKDIV_MASK REFCLKDIV(0x3) |
63 | |
64 | /* FUNC_CFG2 */ |
65 | #define LFRATIO_MASK (1 << 3) |
66 | #define LFRATIO_20_12 (0 << 3) |
67 | #define LFRATIO_12_20 (1 << 3) |
68 | |
69 | #define CH_SIZE_ERR(ch) ((ch < 0) || (ch >= CH_MAX)) |
70 | #define hw_to_priv(_hw) container_of(_hw, struct cs2000_priv, hw) |
71 | #define priv_to_client(priv) (priv->client) |
72 | #define priv_to_dev(priv) (&(priv_to_client(priv)->dev)) |
73 | |
74 | #define CLK_IN 0 |
75 | #define REF_CLK 1 |
76 | #define CLK_MAX 2 |
77 | |
78 | static bool cs2000_readable_reg(struct device *dev, unsigned int reg) |
79 | { |
80 | return reg > 0; |
81 | } |
82 | |
83 | static bool cs2000_writeable_reg(struct device *dev, unsigned int reg) |
84 | { |
85 | return reg != DEVICE_ID; |
86 | } |
87 | |
88 | static bool cs2000_volatile_reg(struct device *dev, unsigned int reg) |
89 | { |
90 | return reg == DEVICE_CTRL; |
91 | } |
92 | |
93 | static const struct regmap_config cs2000_regmap_config = { |
94 | .reg_bits = 8, |
95 | .val_bits = 8, |
96 | .max_register = FUNC_CFG2, |
97 | .readable_reg = cs2000_readable_reg, |
98 | .writeable_reg = cs2000_writeable_reg, |
99 | .volatile_reg = cs2000_volatile_reg, |
100 | }; |
101 | |
102 | struct cs2000_priv { |
103 | struct clk_hw hw; |
104 | struct i2c_client *client; |
105 | struct clk *clk_in; |
106 | struct clk *ref_clk; |
107 | struct regmap *regmap; |
108 | |
109 | bool dynamic_mode; |
110 | bool lf_ratio; |
111 | bool clk_skip; |
112 | |
113 | /* suspend/resume */ |
114 | unsigned long saved_rate; |
115 | unsigned long saved_parent_rate; |
116 | }; |
117 | |
118 | static const struct of_device_id cs2000_of_match[] = { |
119 | { .compatible = "cirrus,cs2000-cp" , }, |
120 | {}, |
121 | }; |
122 | MODULE_DEVICE_TABLE(of, cs2000_of_match); |
123 | |
124 | static const struct i2c_device_id cs2000_id[] = { |
125 | { "cs2000-cp" , }, |
126 | {} |
127 | }; |
128 | MODULE_DEVICE_TABLE(i2c, cs2000_id); |
129 | |
130 | static int cs2000_enable_dev_config(struct cs2000_priv *priv, bool enable) |
131 | { |
132 | int ret; |
133 | |
134 | ret = regmap_update_bits(map: priv->regmap, DEVICE_CFG1, ENDEV1, |
135 | val: enable ? ENDEV1 : 0); |
136 | if (ret < 0) |
137 | return ret; |
138 | |
139 | ret = regmap_update_bits(map: priv->regmap, GLOBAL_CFG, ENDEV2, |
140 | val: enable ? ENDEV2 : 0); |
141 | if (ret < 0) |
142 | return ret; |
143 | |
144 | ret = regmap_update_bits(map: priv->regmap, FUNC_CFG1, CLKSKIPEN, |
145 | val: (enable && priv->clk_skip) ? CLKSKIPEN : 0); |
146 | if (ret < 0) |
147 | return ret; |
148 | |
149 | return 0; |
150 | } |
151 | |
152 | static int cs2000_ref_clk_bound_rate(struct cs2000_priv *priv, |
153 | u32 rate_in) |
154 | { |
155 | u32 val; |
156 | |
157 | if (rate_in >= 32000000 && rate_in < 56000000) |
158 | val = 0x0; |
159 | else if (rate_in >= 16000000 && rate_in < 28000000) |
160 | val = 0x1; |
161 | else if (rate_in >= 8000000 && rate_in < 14000000) |
162 | val = 0x2; |
163 | else |
164 | return -EINVAL; |
165 | |
166 | return regmap_update_bits(map: priv->regmap, FUNC_CFG1, |
167 | REFCLKDIV_MASK, |
168 | REFCLKDIV(val)); |
169 | } |
170 | |
171 | static int cs2000_wait_pll_lock(struct cs2000_priv *priv) |
172 | { |
173 | struct device *dev = priv_to_dev(priv); |
174 | unsigned int i, val; |
175 | int ret; |
176 | |
177 | for (i = 0; i < 256; i++) { |
178 | ret = regmap_read(map: priv->regmap, DEVICE_CTRL, val: &val); |
179 | if (ret < 0) |
180 | return ret; |
181 | if (!(val & PLL_UNLOCK)) |
182 | return 0; |
183 | udelay(1); |
184 | } |
185 | |
186 | dev_err(dev, "pll lock failed\n" ); |
187 | |
188 | return -ETIMEDOUT; |
189 | } |
190 | |
191 | static int cs2000_clk_out_enable(struct cs2000_priv *priv, bool enable) |
192 | { |
193 | /* enable both AUX_OUT, CLK_OUT */ |
194 | return regmap_update_bits(map: priv->regmap, DEVICE_CTRL, |
195 | mask: (AUXOUTDIS | CLKOUTDIS), |
196 | val: enable ? 0 : |
197 | (AUXOUTDIS | CLKOUTDIS)); |
198 | } |
199 | |
200 | static u32 cs2000_rate_to_ratio(u32 rate_in, u32 rate_out, bool lf_ratio) |
201 | { |
202 | u64 ratio; |
203 | u32 multiplier = lf_ratio ? 12 : 20; |
204 | |
205 | /* |
206 | * ratio = rate_out / rate_in * 2^multiplier |
207 | * |
208 | * To avoid over flow, rate_out is u64. |
209 | * The result should be u32. |
210 | */ |
211 | ratio = (u64)rate_out << multiplier; |
212 | do_div(ratio, rate_in); |
213 | |
214 | return ratio; |
215 | } |
216 | |
217 | static unsigned long cs2000_ratio_to_rate(u32 ratio, u32 rate_in, bool lf_ratio) |
218 | { |
219 | u64 rate_out; |
220 | u32 multiplier = lf_ratio ? 12 : 20; |
221 | |
222 | /* |
223 | * ratio = rate_out / rate_in * 2^multiplier |
224 | * |
225 | * To avoid over flow, rate_out is u64. |
226 | * The result should be u32 or unsigned long. |
227 | */ |
228 | |
229 | rate_out = (u64)ratio * rate_in; |
230 | return rate_out >> multiplier; |
231 | } |
232 | |
233 | static int cs2000_ratio_set(struct cs2000_priv *priv, |
234 | int ch, u32 rate_in, u32 rate_out) |
235 | { |
236 | u32 val; |
237 | unsigned int i; |
238 | int ret; |
239 | |
240 | if (CH_SIZE_ERR(ch)) |
241 | return -EINVAL; |
242 | |
243 | val = cs2000_rate_to_ratio(rate_in, rate_out, lf_ratio: priv->lf_ratio); |
244 | for (i = 0; i < RATIO_REG_SIZE; i++) { |
245 | ret = regmap_write(map: priv->regmap, |
246 | Ratio_Add(ch, i), |
247 | Ratio_Val(val, i)); |
248 | if (ret < 0) |
249 | return ret; |
250 | } |
251 | |
252 | return 0; |
253 | } |
254 | |
255 | static u32 cs2000_ratio_get(struct cs2000_priv *priv, int ch) |
256 | { |
257 | unsigned int tmp, i; |
258 | u32 val; |
259 | int ret; |
260 | |
261 | val = 0; |
262 | for (i = 0; i < RATIO_REG_SIZE; i++) { |
263 | ret = regmap_read(map: priv->regmap, Ratio_Add(ch, i), val: &tmp); |
264 | if (ret < 0) |
265 | return 0; |
266 | |
267 | val |= Val_Ratio(tmp, i); |
268 | } |
269 | |
270 | return val; |
271 | } |
272 | |
273 | static int cs2000_ratio_select(struct cs2000_priv *priv, int ch) |
274 | { |
275 | int ret; |
276 | u8 fracnsrc; |
277 | |
278 | if (CH_SIZE_ERR(ch)) |
279 | return -EINVAL; |
280 | |
281 | ret = regmap_update_bits(map: priv->regmap, DEVICE_CFG1, RSEL_MASK, RSEL(ch)); |
282 | if (ret < 0) |
283 | return ret; |
284 | |
285 | fracnsrc = priv->dynamic_mode ? FRACNSRC_DYNAMIC : FRACNSRC_STATIC; |
286 | |
287 | ret = regmap_update_bits(map: priv->regmap, DEVICE_CFG2, |
288 | AUTORMOD | LOCKCLK_MASK | FRACNSRC_MASK, |
289 | LOCKCLK(ch) | fracnsrc); |
290 | if (ret < 0) |
291 | return ret; |
292 | |
293 | return 0; |
294 | } |
295 | |
296 | static unsigned long cs2000_recalc_rate(struct clk_hw *hw, |
297 | unsigned long parent_rate) |
298 | { |
299 | struct cs2000_priv *priv = hw_to_priv(hw); |
300 | int ch = 0; /* it uses ch0 only at this point */ |
301 | u32 ratio; |
302 | |
303 | ratio = cs2000_ratio_get(priv, ch); |
304 | |
305 | return cs2000_ratio_to_rate(ratio, rate_in: parent_rate, lf_ratio: priv->lf_ratio); |
306 | } |
307 | |
308 | static long cs2000_round_rate(struct clk_hw *hw, unsigned long rate, |
309 | unsigned long *parent_rate) |
310 | { |
311 | struct cs2000_priv *priv = hw_to_priv(hw); |
312 | u32 ratio; |
313 | |
314 | ratio = cs2000_rate_to_ratio(rate_in: *parent_rate, rate_out: rate, lf_ratio: priv->lf_ratio); |
315 | |
316 | return cs2000_ratio_to_rate(ratio, rate_in: *parent_rate, lf_ratio: priv->lf_ratio); |
317 | } |
318 | |
319 | static int cs2000_select_ratio_mode(struct cs2000_priv *priv, |
320 | unsigned long rate, |
321 | unsigned long parent_rate) |
322 | { |
323 | /* |
324 | * From the datasheet: |
325 | * |
326 | * | It is recommended that the 12.20 High-Resolution format be |
327 | * | utilized whenever the desired ratio is less than 4096 since |
328 | * | the output frequency accuracy of the PLL is directly proportional |
329 | * | to the accuracy of the timing reference clock and the resolution |
330 | * | of the R_UD. |
331 | * |
332 | * This mode is only available in dynamic mode. |
333 | */ |
334 | priv->lf_ratio = priv->dynamic_mode && ((rate / parent_rate) > 4096); |
335 | |
336 | return regmap_update_bits(map: priv->regmap, FUNC_CFG2, LFRATIO_MASK, |
337 | val: priv->lf_ratio ? LFRATIO_20_12 : LFRATIO_12_20); |
338 | } |
339 | |
340 | static int __cs2000_set_rate(struct cs2000_priv *priv, int ch, |
341 | unsigned long rate, unsigned long parent_rate) |
342 | |
343 | { |
344 | int ret; |
345 | |
346 | ret = regmap_update_bits(map: priv->regmap, GLOBAL_CFG, FREEZE, FREEZE); |
347 | if (ret < 0) |
348 | return ret; |
349 | |
350 | ret = cs2000_select_ratio_mode(priv, rate, parent_rate); |
351 | if (ret < 0) |
352 | return ret; |
353 | |
354 | ret = cs2000_ratio_set(priv, ch, rate_in: parent_rate, rate_out: rate); |
355 | if (ret < 0) |
356 | return ret; |
357 | |
358 | ret = cs2000_ratio_select(priv, ch); |
359 | if (ret < 0) |
360 | return ret; |
361 | |
362 | ret = regmap_update_bits(map: priv->regmap, GLOBAL_CFG, FREEZE, val: 0); |
363 | if (ret < 0) |
364 | return ret; |
365 | |
366 | priv->saved_rate = rate; |
367 | priv->saved_parent_rate = parent_rate; |
368 | |
369 | return 0; |
370 | } |
371 | |
372 | static int cs2000_set_rate(struct clk_hw *hw, |
373 | unsigned long rate, unsigned long parent_rate) |
374 | { |
375 | struct cs2000_priv *priv = hw_to_priv(hw); |
376 | int ch = 0; /* it uses ch0 only at this point */ |
377 | |
378 | return __cs2000_set_rate(priv, ch, rate, parent_rate); |
379 | } |
380 | |
381 | static int cs2000_set_saved_rate(struct cs2000_priv *priv) |
382 | { |
383 | int ch = 0; /* it uses ch0 only at this point */ |
384 | |
385 | return __cs2000_set_rate(priv, ch, |
386 | rate: priv->saved_rate, |
387 | parent_rate: priv->saved_parent_rate); |
388 | } |
389 | |
390 | static int cs2000_enable(struct clk_hw *hw) |
391 | { |
392 | struct cs2000_priv *priv = hw_to_priv(hw); |
393 | int ret; |
394 | |
395 | ret = cs2000_enable_dev_config(priv, enable: true); |
396 | if (ret < 0) |
397 | return ret; |
398 | |
399 | ret = cs2000_clk_out_enable(priv, enable: true); |
400 | if (ret < 0) |
401 | return ret; |
402 | |
403 | ret = cs2000_wait_pll_lock(priv); |
404 | if (ret < 0) |
405 | return ret; |
406 | |
407 | return ret; |
408 | } |
409 | |
410 | static void cs2000_disable(struct clk_hw *hw) |
411 | { |
412 | struct cs2000_priv *priv = hw_to_priv(hw); |
413 | |
414 | cs2000_enable_dev_config(priv, enable: false); |
415 | |
416 | cs2000_clk_out_enable(priv, enable: false); |
417 | } |
418 | |
419 | static u8 cs2000_get_parent(struct clk_hw *hw) |
420 | { |
421 | struct cs2000_priv *priv = hw_to_priv(hw); |
422 | |
423 | /* |
424 | * In dynamic mode, output rates are derived from CLK_IN. |
425 | * In static mode, CLK_IN is ignored, so we return REF_CLK instead. |
426 | */ |
427 | return priv->dynamic_mode ? CLK_IN : REF_CLK; |
428 | } |
429 | |
430 | static const struct clk_ops cs2000_ops = { |
431 | .get_parent = cs2000_get_parent, |
432 | .recalc_rate = cs2000_recalc_rate, |
433 | .round_rate = cs2000_round_rate, |
434 | .set_rate = cs2000_set_rate, |
435 | .prepare = cs2000_enable, |
436 | .unprepare = cs2000_disable, |
437 | }; |
438 | |
439 | static int cs2000_clk_get(struct cs2000_priv *priv) |
440 | { |
441 | struct device *dev = priv_to_dev(priv); |
442 | struct clk *clk_in, *ref_clk; |
443 | |
444 | clk_in = devm_clk_get(dev, id: "clk_in" ); |
445 | /* not yet provided */ |
446 | if (IS_ERR(ptr: clk_in)) |
447 | return -EPROBE_DEFER; |
448 | |
449 | ref_clk = devm_clk_get(dev, id: "ref_clk" ); |
450 | /* not yet provided */ |
451 | if (IS_ERR(ptr: ref_clk)) |
452 | return -EPROBE_DEFER; |
453 | |
454 | priv->clk_in = clk_in; |
455 | priv->ref_clk = ref_clk; |
456 | |
457 | return 0; |
458 | } |
459 | |
460 | static int cs2000_clk_register(struct cs2000_priv *priv) |
461 | { |
462 | struct device *dev = priv_to_dev(priv); |
463 | struct device_node *np = dev->of_node; |
464 | struct clk_init_data init; |
465 | const char *name = np->name; |
466 | static const char *parent_names[CLK_MAX]; |
467 | u32 aux_out = 0; |
468 | int ref_clk_rate; |
469 | int ch = 0; /* it uses ch0 only at this point */ |
470 | int ret; |
471 | |
472 | of_property_read_string(np, propname: "clock-output-names" , out_string: &name); |
473 | |
474 | priv->dynamic_mode = of_property_read_bool(np, propname: "cirrus,dynamic-mode" ); |
475 | dev_info(dev, "operating in %s mode\n" , |
476 | priv->dynamic_mode ? "dynamic" : "static" ); |
477 | |
478 | of_property_read_u32(np, propname: "cirrus,aux-output-source" , out_value: &aux_out); |
479 | ret = regmap_update_bits(map: priv->regmap, DEVICE_CFG1, |
480 | AUXOUTSRC_MASK, AUXOUTSRC(aux_out)); |
481 | if (ret < 0) |
482 | return ret; |
483 | |
484 | priv->clk_skip = of_property_read_bool(np, propname: "cirrus,clock-skip" ); |
485 | |
486 | ref_clk_rate = clk_get_rate(clk: priv->ref_clk); |
487 | ret = cs2000_ref_clk_bound_rate(priv, rate_in: ref_clk_rate); |
488 | if (ret < 0) |
489 | return ret; |
490 | |
491 | if (priv->dynamic_mode) { |
492 | /* Default to low-frequency mode to allow for large ratios */ |
493 | priv->lf_ratio = true; |
494 | } else { |
495 | /* |
496 | * set default rate as 1/1. |
497 | * otherwise .set_rate which setup ratio |
498 | * is never called if user requests 1/1 rate |
499 | */ |
500 | ret = __cs2000_set_rate(priv, ch, rate: ref_clk_rate, parent_rate: ref_clk_rate); |
501 | if (ret < 0) |
502 | return ret; |
503 | } |
504 | |
505 | parent_names[CLK_IN] = __clk_get_name(clk: priv->clk_in); |
506 | parent_names[REF_CLK] = __clk_get_name(clk: priv->ref_clk); |
507 | |
508 | init.name = name; |
509 | init.ops = &cs2000_ops; |
510 | init.flags = CLK_SET_RATE_GATE; |
511 | init.parent_names = parent_names; |
512 | init.num_parents = ARRAY_SIZE(parent_names); |
513 | |
514 | priv->hw.init = &init; |
515 | |
516 | ret = clk_hw_register(dev, hw: &priv->hw); |
517 | if (ret) |
518 | return ret; |
519 | |
520 | ret = of_clk_add_hw_provider(np, get: of_clk_hw_simple_get, data: &priv->hw); |
521 | if (ret < 0) { |
522 | clk_hw_unregister(hw: &priv->hw); |
523 | return ret; |
524 | } |
525 | |
526 | return 0; |
527 | } |
528 | |
529 | static int cs2000_version_print(struct cs2000_priv *priv) |
530 | { |
531 | struct device *dev = priv_to_dev(priv); |
532 | const char *revision; |
533 | unsigned int val; |
534 | int ret; |
535 | |
536 | ret = regmap_read(map: priv->regmap, DEVICE_ID, val: &val); |
537 | if (ret < 0) |
538 | return ret; |
539 | |
540 | /* CS2000 should be 0x0 */ |
541 | if (val >> 3) |
542 | return -EIO; |
543 | |
544 | switch (val & REVISION_MASK) { |
545 | case REVISION_B2_B3: |
546 | revision = "B2 / B3" ; |
547 | break; |
548 | case REVISION_C1: |
549 | revision = "C1" ; |
550 | break; |
551 | default: |
552 | return -EIO; |
553 | } |
554 | |
555 | dev_info(dev, "revision - %s\n" , revision); |
556 | |
557 | return 0; |
558 | } |
559 | |
560 | static void cs2000_remove(struct i2c_client *client) |
561 | { |
562 | struct cs2000_priv *priv = i2c_get_clientdata(client); |
563 | struct device *dev = priv_to_dev(priv); |
564 | struct device_node *np = dev->of_node; |
565 | |
566 | of_clk_del_provider(np); |
567 | |
568 | clk_hw_unregister(hw: &priv->hw); |
569 | } |
570 | |
571 | static int cs2000_probe(struct i2c_client *client) |
572 | { |
573 | struct cs2000_priv *priv; |
574 | struct device *dev = &client->dev; |
575 | int ret; |
576 | |
577 | priv = devm_kzalloc(dev, size: sizeof(*priv), GFP_KERNEL); |
578 | if (!priv) |
579 | return -ENOMEM; |
580 | |
581 | priv->client = client; |
582 | i2c_set_clientdata(client, data: priv); |
583 | |
584 | priv->regmap = devm_regmap_init_i2c(client, &cs2000_regmap_config); |
585 | if (IS_ERR(ptr: priv->regmap)) |
586 | return PTR_ERR(ptr: priv->regmap); |
587 | |
588 | ret = cs2000_clk_get(priv); |
589 | if (ret < 0) |
590 | return ret; |
591 | |
592 | ret = cs2000_clk_register(priv); |
593 | if (ret < 0) |
594 | return ret; |
595 | |
596 | ret = cs2000_version_print(priv); |
597 | if (ret < 0) |
598 | goto probe_err; |
599 | |
600 | return 0; |
601 | |
602 | probe_err: |
603 | cs2000_remove(client); |
604 | |
605 | return ret; |
606 | } |
607 | |
608 | static int __maybe_unused cs2000_resume(struct device *dev) |
609 | { |
610 | struct cs2000_priv *priv = dev_get_drvdata(dev); |
611 | |
612 | return cs2000_set_saved_rate(priv); |
613 | } |
614 | |
615 | static const struct dev_pm_ops cs2000_pm_ops = { |
616 | SET_LATE_SYSTEM_SLEEP_PM_OPS(NULL, cs2000_resume) |
617 | }; |
618 | |
619 | static struct i2c_driver cs2000_driver = { |
620 | .driver = { |
621 | .name = "cs2000-cp" , |
622 | .pm = &cs2000_pm_ops, |
623 | .of_match_table = cs2000_of_match, |
624 | }, |
625 | .probe = cs2000_probe, |
626 | .remove = cs2000_remove, |
627 | .id_table = cs2000_id, |
628 | }; |
629 | |
630 | module_i2c_driver(cs2000_driver); |
631 | |
632 | MODULE_DESCRIPTION("CS2000-CP driver" ); |
633 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>" ); |
634 | MODULE_LICENSE("GPL v2" ); |
635 | |