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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3e1aec4e MV |
2 | /* |
3 | * Driver for IDT Versaclock 5 | |
4 | * | |
5 | * Copyright (C) 2017 Marek Vasut <marek.vasut@gmail.com> | |
3e1aec4e MV |
6 | */ |
7 | ||
8 | /* | |
9 | * Possible optimizations: | |
10 | * - Use spread spectrum | |
11 | * - Use integer divider in FOD if applicable | |
12 | */ | |
13 | ||
14 | #include <linux/clk.h> | |
15 | #include <linux/clk-provider.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/i2c.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/mod_devicetable.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/of.h> | |
22 | #include <linux/of_platform.h> | |
23 | #include <linux/rational.h> | |
24 | #include <linux/regmap.h> | |
25 | #include <linux/slab.h> | |
26 | ||
27 | /* VersaClock5 registers */ | |
28 | #define VC5_OTP_CONTROL 0x00 | |
29 | ||
30 | /* Factory-reserved register block */ | |
31 | #define VC5_RSVD_DEVICE_ID 0x01 | |
32 | #define VC5_RSVD_ADC_GAIN_7_0 0x02 | |
33 | #define VC5_RSVD_ADC_GAIN_15_8 0x03 | |
34 | #define VC5_RSVD_ADC_OFFSET_7_0 0x04 | |
35 | #define VC5_RSVD_ADC_OFFSET_15_8 0x05 | |
36 | #define VC5_RSVD_TEMPY 0x06 | |
37 | #define VC5_RSVD_OFFSET_TBIN 0x07 | |
38 | #define VC5_RSVD_GAIN 0x08 | |
39 | #define VC5_RSVD_TEST_NP 0x09 | |
40 | #define VC5_RSVD_UNUSED 0x0a | |
41 | #define VC5_RSVD_BANDGAP_TRIM_UP 0x0b | |
42 | #define VC5_RSVD_BANDGAP_TRIM_DN 0x0c | |
43 | #define VC5_RSVD_CLK_R_12_CLK_AMP_4 0x0d | |
44 | #define VC5_RSVD_CLK_R_34_CLK_AMP_4 0x0e | |
45 | #define VC5_RSVD_CLK_AMP_123 0x0f | |
46 | ||
47 | /* Configuration register block */ | |
48 | #define VC5_PRIM_SRC_SHDN 0x10 | |
49 | #define VC5_PRIM_SRC_SHDN_EN_XTAL BIT(7) | |
50 | #define VC5_PRIM_SRC_SHDN_EN_CLKIN BIT(6) | |
8c1ebe97 | 51 | #define VC5_PRIM_SRC_SHDN_EN_DOUBLE_XTAL_FREQ BIT(3) |
3e1aec4e MV |
52 | #define VC5_PRIM_SRC_SHDN_SP BIT(1) |
53 | #define VC5_PRIM_SRC_SHDN_EN_GBL_SHDN BIT(0) | |
54 | ||
55 | #define VC5_VCO_BAND 0x11 | |
56 | #define VC5_XTAL_X1_LOAD_CAP 0x12 | |
57 | #define VC5_XTAL_X2_LOAD_CAP 0x13 | |
58 | #define VC5_REF_DIVIDER 0x15 | |
59 | #define VC5_REF_DIVIDER_SEL_PREDIV2 BIT(7) | |
60 | #define VC5_REF_DIVIDER_REF_DIV(n) ((n) & 0x3f) | |
61 | ||
62 | #define VC5_VCO_CTRL_AND_PREDIV 0x16 | |
63 | #define VC5_VCO_CTRL_AND_PREDIV_BYPASS_PREDIV BIT(7) | |
64 | ||
65 | #define VC5_FEEDBACK_INT_DIV 0x17 | |
66 | #define VC5_FEEDBACK_INT_DIV_BITS 0x18 | |
67 | #define VC5_FEEDBACK_FRAC_DIV(n) (0x19 + (n)) | |
68 | #define VC5_RC_CONTROL0 0x1e | |
69 | #define VC5_RC_CONTROL1 0x1f | |
70 | /* Register 0x20 is factory reserved */ | |
71 | ||
72 | /* Output divider control for divider 1,2,3,4 */ | |
73 | #define VC5_OUT_DIV_CONTROL(idx) (0x21 + ((idx) * 0x10)) | |
74 | #define VC5_OUT_DIV_CONTROL_RESET BIT(7) | |
75 | #define VC5_OUT_DIV_CONTROL_SELB_NORM BIT(3) | |
76 | #define VC5_OUT_DIV_CONTROL_SEL_EXT BIT(2) | |
77 | #define VC5_OUT_DIV_CONTROL_INT_MODE BIT(1) | |
78 | #define VC5_OUT_DIV_CONTROL_EN_FOD BIT(0) | |
79 | ||
80 | #define VC5_OUT_DIV_FRAC(idx, n) (0x22 + ((idx) * 0x10) + (n)) | |
81 | #define VC5_OUT_DIV_FRAC4_OD_SCEE BIT(1) | |
82 | ||
83 | #define VC5_OUT_DIV_STEP_SPREAD(idx, n) (0x26 + ((idx) * 0x10) + (n)) | |
84 | #define VC5_OUT_DIV_SPREAD_MOD(idx, n) (0x29 + ((idx) * 0x10) + (n)) | |
85 | #define VC5_OUT_DIV_SKEW_INT(idx, n) (0x2b + ((idx) * 0x10) + (n)) | |
86 | #define VC5_OUT_DIV_INT(idx, n) (0x2d + ((idx) * 0x10) + (n)) | |
87 | #define VC5_OUT_DIV_SKEW_FRAC(idx) (0x2f + ((idx) * 0x10)) | |
88 | /* Registers 0x30, 0x40, 0x50 are factory reserved */ | |
89 | ||
90 | /* Clock control register for clock 1,2 */ | |
91 | #define VC5_CLK_OUTPUT_CFG(idx, n) (0x60 + ((idx) * 0x2) + (n)) | |
92 | #define VC5_CLK_OUTPUT_CFG1_EN_CLKBUF BIT(0) | |
93 | ||
94 | #define VC5_CLK_OE_SHDN 0x68 | |
95 | #define VC5_CLK_OS_SHDN 0x69 | |
96 | ||
97 | #define VC5_GLOBAL_REGISTER 0x76 | |
98 | #define VC5_GLOBAL_REGISTER_GLOBAL_RESET BIT(5) | |
99 | ||
100 | /* PLL/VCO runs between 2.5 GHz and 3.0 GHz */ | |
101 | #define VC5_PLL_VCO_MIN 2500000000UL | |
102 | #define VC5_PLL_VCO_MAX 3000000000UL | |
103 | ||
104 | /* VC5 Input mux settings */ | |
105 | #define VC5_MUX_IN_XIN BIT(0) | |
106 | #define VC5_MUX_IN_CLKIN BIT(1) | |
107 | ||
9adddb01 | 108 | /* Maximum number of clk_out supported by this driver */ |
1193e14f | 109 | #define VC5_MAX_CLK_OUT_NUM 5 |
9adddb01 AF |
110 | |
111 | /* Maximum number of FODs supported by this driver */ | |
1193e14f | 112 | #define VC5_MAX_FOD_NUM 4 |
9adddb01 AF |
113 | |
114 | /* flags to describe chip features */ | |
115 | /* chip has built-in oscilator */ | |
116 | #define VC5_HAS_INTERNAL_XTAL BIT(0) | |
8c1ebe97 MV |
117 | /* chip has PFD requency doubler */ |
118 | #define VC5_HAS_PFD_FREQ_DBL BIT(1) | |
9adddb01 | 119 | |
3e1aec4e MV |
120 | /* Supported IDT VC5 models. */ |
121 | enum vc5_model { | |
122 | IDT_VC5_5P49V5923, | |
b1911555 | 123 | IDT_VC5_5P49V5925, |
3e1aec4e | 124 | IDT_VC5_5P49V5933, |
1193e14f | 125 | IDT_VC5_5P49V5935, |
dbf6b16f | 126 | IDT_VC6_5P49V6901, |
3e1aec4e MV |
127 | }; |
128 | ||
9adddb01 AF |
129 | /* Structure to describe features of a particular VC5 model */ |
130 | struct vc5_chip_info { | |
131 | const enum vc5_model model; | |
132 | const unsigned int clk_fod_cnt; | |
133 | const unsigned int clk_out_cnt; | |
134 | const u32 flags; | |
135 | }; | |
136 | ||
3e1aec4e MV |
137 | struct vc5_driver_data; |
138 | ||
139 | struct vc5_hw_data { | |
140 | struct clk_hw hw; | |
141 | struct vc5_driver_data *vc5; | |
142 | u32 div_int; | |
143 | u32 div_frc; | |
144 | unsigned int num; | |
145 | }; | |
146 | ||
147 | struct vc5_driver_data { | |
148 | struct i2c_client *client; | |
149 | struct regmap *regmap; | |
9adddb01 | 150 | const struct vc5_chip_info *chip_info; |
3e1aec4e MV |
151 | |
152 | struct clk *pin_xin; | |
153 | struct clk *pin_clkin; | |
154 | unsigned char clk_mux_ins; | |
155 | struct clk_hw clk_mux; | |
8c1ebe97 | 156 | struct clk_hw clk_mul; |
55997db5 | 157 | struct clk_hw clk_pfd; |
3e1aec4e | 158 | struct vc5_hw_data clk_pll; |
9adddb01 AF |
159 | struct vc5_hw_data clk_fod[VC5_MAX_FOD_NUM]; |
160 | struct vc5_hw_data clk_out[VC5_MAX_CLK_OUT_NUM]; | |
3e1aec4e MV |
161 | }; |
162 | ||
163 | static const char * const vc5_mux_names[] = { | |
164 | "mux" | |
165 | }; | |
166 | ||
8c1ebe97 MV |
167 | static const char * const vc5_dbl_names[] = { |
168 | "dbl" | |
169 | }; | |
170 | ||
55997db5 MV |
171 | static const char * const vc5_pfd_names[] = { |
172 | "pfd" | |
173 | }; | |
174 | ||
3e1aec4e MV |
175 | static const char * const vc5_pll_names[] = { |
176 | "pll" | |
177 | }; | |
178 | ||
179 | static const char * const vc5_fod_names[] = { | |
180 | "fod0", "fod1", "fod2", "fod3", | |
181 | }; | |
182 | ||
183 | static const char * const vc5_clk_out_names[] = { | |
184 | "out0_sel_i2cb", "out1", "out2", "out3", "out4", | |
185 | }; | |
186 | ||
187 | /* | |
188 | * VersaClock5 i2c regmap | |
189 | */ | |
190 | static bool vc5_regmap_is_writeable(struct device *dev, unsigned int reg) | |
191 | { | |
192 | /* Factory reserved regs, make them read-only */ | |
193 | if (reg <= 0xf) | |
194 | return false; | |
195 | ||
196 | /* Factory reserved regs, make them read-only */ | |
197 | if (reg == 0x14 || reg == 0x1c || reg == 0x1d) | |
198 | return false; | |
199 | ||
200 | return true; | |
201 | } | |
202 | ||
203 | static const struct regmap_config vc5_regmap_config = { | |
204 | .reg_bits = 8, | |
205 | .val_bits = 8, | |
206 | .cache_type = REGCACHE_RBTREE, | |
207 | .max_register = 0x76, | |
208 | .writeable_reg = vc5_regmap_is_writeable, | |
209 | }; | |
210 | ||
211 | /* | |
212 | * VersaClock5 input multiplexer between XTAL and CLKIN divider | |
213 | */ | |
214 | static unsigned char vc5_mux_get_parent(struct clk_hw *hw) | |
215 | { | |
216 | struct vc5_driver_data *vc5 = | |
217 | container_of(hw, struct vc5_driver_data, clk_mux); | |
218 | const u8 mask = VC5_PRIM_SRC_SHDN_EN_XTAL | VC5_PRIM_SRC_SHDN_EN_CLKIN; | |
219 | unsigned int src; | |
220 | ||
221 | regmap_read(vc5->regmap, VC5_PRIM_SRC_SHDN, &src); | |
222 | src &= mask; | |
223 | ||
224 | if (src == VC5_PRIM_SRC_SHDN_EN_XTAL) | |
225 | return 0; | |
226 | ||
227 | if (src == VC5_PRIM_SRC_SHDN_EN_CLKIN) | |
228 | return 1; | |
229 | ||
230 | dev_warn(&vc5->client->dev, | |
231 | "Invalid clock input configuration (%02x)\n", src); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | static int vc5_mux_set_parent(struct clk_hw *hw, u8 index) | |
236 | { | |
237 | struct vc5_driver_data *vc5 = | |
238 | container_of(hw, struct vc5_driver_data, clk_mux); | |
239 | const u8 mask = VC5_PRIM_SRC_SHDN_EN_XTAL | VC5_PRIM_SRC_SHDN_EN_CLKIN; | |
240 | u8 src; | |
241 | ||
242 | if ((index > 1) || !vc5->clk_mux_ins) | |
243 | return -EINVAL; | |
244 | ||
245 | if (vc5->clk_mux_ins == (VC5_MUX_IN_CLKIN | VC5_MUX_IN_XIN)) { | |
246 | if (index == 0) | |
247 | src = VC5_PRIM_SRC_SHDN_EN_XTAL; | |
248 | if (index == 1) | |
249 | src = VC5_PRIM_SRC_SHDN_EN_CLKIN; | |
250 | } else { | |
251 | if (index != 0) | |
252 | return -EINVAL; | |
253 | ||
254 | if (vc5->clk_mux_ins == VC5_MUX_IN_XIN) | |
255 | src = VC5_PRIM_SRC_SHDN_EN_XTAL; | |
2137a109 | 256 | else if (vc5->clk_mux_ins == VC5_MUX_IN_CLKIN) |
3e1aec4e | 257 | src = VC5_PRIM_SRC_SHDN_EN_CLKIN; |
2137a109 MV |
258 | else /* Invalid; should have been caught by vc5_probe() */ |
259 | return -EINVAL; | |
3e1aec4e MV |
260 | } |
261 | ||
262 | return regmap_update_bits(vc5->regmap, VC5_PRIM_SRC_SHDN, mask, src); | |
263 | } | |
264 | ||
55997db5 MV |
265 | static const struct clk_ops vc5_mux_ops = { |
266 | .set_parent = vc5_mux_set_parent, | |
267 | .get_parent = vc5_mux_get_parent, | |
268 | }; | |
269 | ||
8c1ebe97 MV |
270 | static unsigned long vc5_dbl_recalc_rate(struct clk_hw *hw, |
271 | unsigned long parent_rate) | |
272 | { | |
273 | struct vc5_driver_data *vc5 = | |
274 | container_of(hw, struct vc5_driver_data, clk_mul); | |
275 | unsigned int premul; | |
276 | ||
277 | regmap_read(vc5->regmap, VC5_PRIM_SRC_SHDN, &premul); | |
278 | if (premul & VC5_PRIM_SRC_SHDN_EN_DOUBLE_XTAL_FREQ) | |
279 | parent_rate *= 2; | |
280 | ||
281 | return parent_rate; | |
282 | } | |
283 | ||
284 | static long vc5_dbl_round_rate(struct clk_hw *hw, unsigned long rate, | |
285 | unsigned long *parent_rate) | |
286 | { | |
287 | if ((*parent_rate == rate) || ((*parent_rate * 2) == rate)) | |
288 | return rate; | |
289 | else | |
290 | return -EINVAL; | |
291 | } | |
292 | ||
293 | static int vc5_dbl_set_rate(struct clk_hw *hw, unsigned long rate, | |
294 | unsigned long parent_rate) | |
295 | { | |
296 | struct vc5_driver_data *vc5 = | |
297 | container_of(hw, struct vc5_driver_data, clk_mul); | |
298 | u32 mask; | |
299 | ||
300 | if ((parent_rate * 2) == rate) | |
301 | mask = VC5_PRIM_SRC_SHDN_EN_DOUBLE_XTAL_FREQ; | |
302 | else | |
303 | mask = 0; | |
304 | ||
305 | regmap_update_bits(vc5->regmap, VC5_PRIM_SRC_SHDN, | |
306 | VC5_PRIM_SRC_SHDN_EN_DOUBLE_XTAL_FREQ, | |
307 | mask); | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | static const struct clk_ops vc5_dbl_ops = { | |
313 | .recalc_rate = vc5_dbl_recalc_rate, | |
314 | .round_rate = vc5_dbl_round_rate, | |
315 | .set_rate = vc5_dbl_set_rate, | |
316 | }; | |
317 | ||
55997db5 | 318 | static unsigned long vc5_pfd_recalc_rate(struct clk_hw *hw, |
3e1aec4e MV |
319 | unsigned long parent_rate) |
320 | { | |
321 | struct vc5_driver_data *vc5 = | |
55997db5 | 322 | container_of(hw, struct vc5_driver_data, clk_pfd); |
3e1aec4e MV |
323 | unsigned int prediv, div; |
324 | ||
325 | regmap_read(vc5->regmap, VC5_VCO_CTRL_AND_PREDIV, &prediv); | |
326 | ||
327 | /* The bypass_prediv is set, PLL fed from Ref_in directly. */ | |
328 | if (prediv & VC5_VCO_CTRL_AND_PREDIV_BYPASS_PREDIV) | |
329 | return parent_rate; | |
330 | ||
331 | regmap_read(vc5->regmap, VC5_REF_DIVIDER, &div); | |
332 | ||
333 | /* The Sel_prediv2 is set, PLL fed from prediv2 (Ref_in / 2) */ | |
334 | if (div & VC5_REF_DIVIDER_SEL_PREDIV2) | |
335 | return parent_rate / 2; | |
336 | else | |
337 | return parent_rate / VC5_REF_DIVIDER_REF_DIV(div); | |
338 | } | |
339 | ||
55997db5 | 340 | static long vc5_pfd_round_rate(struct clk_hw *hw, unsigned long rate, |
3e1aec4e MV |
341 | unsigned long *parent_rate) |
342 | { | |
343 | unsigned long idiv; | |
344 | ||
345 | /* PLL cannot operate with input clock above 50 MHz. */ | |
346 | if (rate > 50000000) | |
347 | return -EINVAL; | |
348 | ||
349 | /* CLKIN within range of PLL input, feed directly to PLL. */ | |
350 | if (*parent_rate <= 50000000) | |
351 | return *parent_rate; | |
352 | ||
353 | idiv = DIV_ROUND_UP(*parent_rate, rate); | |
354 | if (idiv > 127) | |
355 | return -EINVAL; | |
356 | ||
357 | return *parent_rate / idiv; | |
358 | } | |
359 | ||
55997db5 | 360 | static int vc5_pfd_set_rate(struct clk_hw *hw, unsigned long rate, |
3e1aec4e MV |
361 | unsigned long parent_rate) |
362 | { | |
363 | struct vc5_driver_data *vc5 = | |
55997db5 | 364 | container_of(hw, struct vc5_driver_data, clk_pfd); |
3e1aec4e MV |
365 | unsigned long idiv; |
366 | u8 div; | |
367 | ||
368 | /* CLKIN within range of PLL input, feed directly to PLL. */ | |
369 | if (parent_rate <= 50000000) { | |
370 | regmap_update_bits(vc5->regmap, VC5_VCO_CTRL_AND_PREDIV, | |
371 | VC5_VCO_CTRL_AND_PREDIV_BYPASS_PREDIV, | |
372 | VC5_VCO_CTRL_AND_PREDIV_BYPASS_PREDIV); | |
373 | regmap_update_bits(vc5->regmap, VC5_REF_DIVIDER, 0xff, 0x00); | |
374 | return 0; | |
375 | } | |
376 | ||
377 | idiv = DIV_ROUND_UP(parent_rate, rate); | |
378 | ||
379 | /* We have dedicated div-2 predivider. */ | |
380 | if (idiv == 2) | |
381 | div = VC5_REF_DIVIDER_SEL_PREDIV2; | |
382 | else | |
383 | div = VC5_REF_DIVIDER_REF_DIV(idiv); | |
384 | ||
385 | regmap_update_bits(vc5->regmap, VC5_REF_DIVIDER, 0xff, div); | |
386 | regmap_update_bits(vc5->regmap, VC5_VCO_CTRL_AND_PREDIV, | |
387 | VC5_VCO_CTRL_AND_PREDIV_BYPASS_PREDIV, 0); | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
55997db5 MV |
392 | static const struct clk_ops vc5_pfd_ops = { |
393 | .recalc_rate = vc5_pfd_recalc_rate, | |
394 | .round_rate = vc5_pfd_round_rate, | |
395 | .set_rate = vc5_pfd_set_rate, | |
3e1aec4e MV |
396 | }; |
397 | ||
398 | /* | |
399 | * VersaClock5 PLL/VCO | |
400 | */ | |
401 | static unsigned long vc5_pll_recalc_rate(struct clk_hw *hw, | |
402 | unsigned long parent_rate) | |
403 | { | |
404 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
405 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
406 | u32 div_int, div_frc; | |
407 | u8 fb[5]; | |
408 | ||
409 | regmap_bulk_read(vc5->regmap, VC5_FEEDBACK_INT_DIV, fb, 5); | |
410 | ||
411 | div_int = (fb[0] << 4) | (fb[1] >> 4); | |
412 | div_frc = (fb[2] << 16) | (fb[3] << 8) | fb[4]; | |
413 | ||
414 | /* The PLL divider has 12 integer bits and 24 fractional bits */ | |
415 | return (parent_rate * div_int) + ((parent_rate * div_frc) >> 24); | |
416 | } | |
417 | ||
418 | static long vc5_pll_round_rate(struct clk_hw *hw, unsigned long rate, | |
419 | unsigned long *parent_rate) | |
420 | { | |
421 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
422 | u32 div_int; | |
423 | u64 div_frc; | |
424 | ||
425 | if (rate < VC5_PLL_VCO_MIN) | |
426 | rate = VC5_PLL_VCO_MIN; | |
427 | if (rate > VC5_PLL_VCO_MAX) | |
428 | rate = VC5_PLL_VCO_MAX; | |
429 | ||
430 | /* Determine integer part, which is 12 bit wide */ | |
431 | div_int = rate / *parent_rate; | |
432 | if (div_int > 0xfff) | |
433 | rate = *parent_rate * 0xfff; | |
434 | ||
435 | /* Determine best fractional part, which is 24 bit wide */ | |
436 | div_frc = rate % *parent_rate; | |
437 | div_frc *= BIT(24) - 1; | |
438 | do_div(div_frc, *parent_rate); | |
439 | ||
440 | hwdata->div_int = div_int; | |
441 | hwdata->div_frc = (u32)div_frc; | |
442 | ||
443 | return (*parent_rate * div_int) + ((*parent_rate * div_frc) >> 24); | |
444 | } | |
445 | ||
446 | static int vc5_pll_set_rate(struct clk_hw *hw, unsigned long rate, | |
447 | unsigned long parent_rate) | |
448 | { | |
449 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
450 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
451 | u8 fb[5]; | |
452 | ||
453 | fb[0] = hwdata->div_int >> 4; | |
454 | fb[1] = hwdata->div_int << 4; | |
455 | fb[2] = hwdata->div_frc >> 16; | |
456 | fb[3] = hwdata->div_frc >> 8; | |
457 | fb[4] = hwdata->div_frc; | |
458 | ||
459 | return regmap_bulk_write(vc5->regmap, VC5_FEEDBACK_INT_DIV, fb, 5); | |
460 | } | |
461 | ||
462 | static const struct clk_ops vc5_pll_ops = { | |
463 | .recalc_rate = vc5_pll_recalc_rate, | |
464 | .round_rate = vc5_pll_round_rate, | |
465 | .set_rate = vc5_pll_set_rate, | |
466 | }; | |
467 | ||
468 | static unsigned long vc5_fod_recalc_rate(struct clk_hw *hw, | |
469 | unsigned long parent_rate) | |
470 | { | |
471 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
472 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
473 | /* VCO frequency is divided by two before entering FOD */ | |
474 | u32 f_in = parent_rate / 2; | |
475 | u32 div_int, div_frc; | |
476 | u8 od_int[2]; | |
477 | u8 od_frc[4]; | |
478 | ||
479 | regmap_bulk_read(vc5->regmap, VC5_OUT_DIV_INT(hwdata->num, 0), | |
480 | od_int, 2); | |
481 | regmap_bulk_read(vc5->regmap, VC5_OUT_DIV_FRAC(hwdata->num, 0), | |
482 | od_frc, 4); | |
483 | ||
484 | div_int = (od_int[0] << 4) | (od_int[1] >> 4); | |
485 | div_frc = (od_frc[0] << 22) | (od_frc[1] << 14) | | |
486 | (od_frc[2] << 6) | (od_frc[3] >> 2); | |
487 | ||
3bded569 MV |
488 | /* Avoid division by zero if the output is not configured. */ |
489 | if (div_int == 0 && div_frc == 0) | |
490 | return 0; | |
491 | ||
3e1aec4e MV |
492 | /* The PLL divider has 12 integer bits and 30 fractional bits */ |
493 | return div64_u64((u64)f_in << 24ULL, ((u64)div_int << 24ULL) + div_frc); | |
494 | } | |
495 | ||
496 | static long vc5_fod_round_rate(struct clk_hw *hw, unsigned long rate, | |
497 | unsigned long *parent_rate) | |
498 | { | |
499 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
500 | /* VCO frequency is divided by two before entering FOD */ | |
501 | u32 f_in = *parent_rate / 2; | |
502 | u32 div_int; | |
503 | u64 div_frc; | |
504 | ||
505 | /* Determine integer part, which is 12 bit wide */ | |
506 | div_int = f_in / rate; | |
507 | /* | |
508 | * WARNING: The clock chip does not output signal if the integer part | |
509 | * of the divider is 0xfff and fractional part is non-zero. | |
510 | * Clamp the divider at 0xffe to keep the code simple. | |
511 | */ | |
512 | if (div_int > 0xffe) { | |
513 | div_int = 0xffe; | |
514 | rate = f_in / div_int; | |
515 | } | |
516 | ||
517 | /* Determine best fractional part, which is 30 bit wide */ | |
518 | div_frc = f_in % rate; | |
519 | div_frc <<= 24; | |
520 | do_div(div_frc, rate); | |
521 | ||
522 | hwdata->div_int = div_int; | |
523 | hwdata->div_frc = (u32)div_frc; | |
524 | ||
525 | return div64_u64((u64)f_in << 24ULL, ((u64)div_int << 24ULL) + div_frc); | |
526 | } | |
527 | ||
528 | static int vc5_fod_set_rate(struct clk_hw *hw, unsigned long rate, | |
529 | unsigned long parent_rate) | |
530 | { | |
531 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
532 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
533 | u8 data[14] = { | |
534 | hwdata->div_frc >> 22, hwdata->div_frc >> 14, | |
535 | hwdata->div_frc >> 6, hwdata->div_frc << 2, | |
536 | 0, 0, 0, 0, 0, | |
537 | 0, 0, | |
538 | hwdata->div_int >> 4, hwdata->div_int << 4, | |
539 | 0 | |
540 | }; | |
541 | ||
542 | regmap_bulk_write(vc5->regmap, VC5_OUT_DIV_FRAC(hwdata->num, 0), | |
543 | data, 14); | |
544 | ||
545 | /* | |
546 | * Toggle magic bit in undocumented register for unknown reason. | |
547 | * This is what the IDT timing commander tool does and the chip | |
548 | * datasheet somewhat implies this is needed, but the register | |
549 | * and the bit is not documented. | |
550 | */ | |
551 | regmap_update_bits(vc5->regmap, VC5_GLOBAL_REGISTER, | |
552 | VC5_GLOBAL_REGISTER_GLOBAL_RESET, 0); | |
553 | regmap_update_bits(vc5->regmap, VC5_GLOBAL_REGISTER, | |
554 | VC5_GLOBAL_REGISTER_GLOBAL_RESET, | |
555 | VC5_GLOBAL_REGISTER_GLOBAL_RESET); | |
556 | return 0; | |
557 | } | |
558 | ||
559 | static const struct clk_ops vc5_fod_ops = { | |
560 | .recalc_rate = vc5_fod_recalc_rate, | |
561 | .round_rate = vc5_fod_round_rate, | |
562 | .set_rate = vc5_fod_set_rate, | |
563 | }; | |
564 | ||
565 | static int vc5_clk_out_prepare(struct clk_hw *hw) | |
566 | { | |
567 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
568 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
718f4694 MV |
569 | const u8 mask = VC5_OUT_DIV_CONTROL_SELB_NORM | |
570 | VC5_OUT_DIV_CONTROL_SEL_EXT | | |
571 | VC5_OUT_DIV_CONTROL_EN_FOD; | |
572 | unsigned int src; | |
573 | int ret; | |
574 | ||
575 | /* | |
576 | * If the input mux is disabled, enable it first and | |
577 | * select source from matching FOD. | |
578 | */ | |
579 | regmap_read(vc5->regmap, VC5_OUT_DIV_CONTROL(hwdata->num), &src); | |
580 | if ((src & mask) == 0) { | |
581 | src = VC5_OUT_DIV_CONTROL_RESET | VC5_OUT_DIV_CONTROL_EN_FOD; | |
582 | ret = regmap_update_bits(vc5->regmap, | |
583 | VC5_OUT_DIV_CONTROL(hwdata->num), | |
584 | mask | VC5_OUT_DIV_CONTROL_RESET, src); | |
585 | if (ret) | |
586 | return ret; | |
587 | } | |
3e1aec4e MV |
588 | |
589 | /* Enable the clock buffer */ | |
590 | regmap_update_bits(vc5->regmap, VC5_CLK_OUTPUT_CFG(hwdata->num, 1), | |
591 | VC5_CLK_OUTPUT_CFG1_EN_CLKBUF, | |
592 | VC5_CLK_OUTPUT_CFG1_EN_CLKBUF); | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static void vc5_clk_out_unprepare(struct clk_hw *hw) | |
597 | { | |
598 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
599 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
600 | ||
a4decf58 | 601 | /* Disable the clock buffer */ |
3e1aec4e MV |
602 | regmap_update_bits(vc5->regmap, VC5_CLK_OUTPUT_CFG(hwdata->num, 1), |
603 | VC5_CLK_OUTPUT_CFG1_EN_CLKBUF, 0); | |
604 | } | |
605 | ||
606 | static unsigned char vc5_clk_out_get_parent(struct clk_hw *hw) | |
607 | { | |
608 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
609 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
610 | const u8 mask = VC5_OUT_DIV_CONTROL_SELB_NORM | | |
611 | VC5_OUT_DIV_CONTROL_SEL_EXT | | |
612 | VC5_OUT_DIV_CONTROL_EN_FOD; | |
613 | const u8 fodclkmask = VC5_OUT_DIV_CONTROL_SELB_NORM | | |
614 | VC5_OUT_DIV_CONTROL_EN_FOD; | |
615 | const u8 extclk = VC5_OUT_DIV_CONTROL_SELB_NORM | | |
616 | VC5_OUT_DIV_CONTROL_SEL_EXT; | |
617 | unsigned int src; | |
618 | ||
619 | regmap_read(vc5->regmap, VC5_OUT_DIV_CONTROL(hwdata->num), &src); | |
620 | src &= mask; | |
621 | ||
325b7b90 MV |
622 | if (src == 0) /* Input mux set to DISABLED */ |
623 | return 0; | |
624 | ||
3e1aec4e MV |
625 | if ((src & fodclkmask) == VC5_OUT_DIV_CONTROL_EN_FOD) |
626 | return 0; | |
627 | ||
628 | if (src == extclk) | |
629 | return 1; | |
630 | ||
631 | dev_warn(&vc5->client->dev, | |
632 | "Invalid clock output configuration (%02x)\n", src); | |
633 | return 0; | |
634 | } | |
635 | ||
636 | static int vc5_clk_out_set_parent(struct clk_hw *hw, u8 index) | |
637 | { | |
638 | struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw); | |
639 | struct vc5_driver_data *vc5 = hwdata->vc5; | |
640 | const u8 mask = VC5_OUT_DIV_CONTROL_RESET | | |
641 | VC5_OUT_DIV_CONTROL_SELB_NORM | | |
642 | VC5_OUT_DIV_CONTROL_SEL_EXT | | |
643 | VC5_OUT_DIV_CONTROL_EN_FOD; | |
644 | const u8 extclk = VC5_OUT_DIV_CONTROL_SELB_NORM | | |
645 | VC5_OUT_DIV_CONTROL_SEL_EXT; | |
646 | u8 src = VC5_OUT_DIV_CONTROL_RESET; | |
647 | ||
648 | if (index == 0) | |
649 | src |= VC5_OUT_DIV_CONTROL_EN_FOD; | |
650 | else | |
651 | src |= extclk; | |
652 | ||
653 | return regmap_update_bits(vc5->regmap, VC5_OUT_DIV_CONTROL(hwdata->num), | |
654 | mask, src); | |
655 | } | |
656 | ||
657 | static const struct clk_ops vc5_clk_out_ops = { | |
658 | .prepare = vc5_clk_out_prepare, | |
659 | .unprepare = vc5_clk_out_unprepare, | |
660 | .set_parent = vc5_clk_out_set_parent, | |
661 | .get_parent = vc5_clk_out_get_parent, | |
662 | }; | |
663 | ||
664 | static struct clk_hw *vc5_of_clk_get(struct of_phandle_args *clkspec, | |
665 | void *data) | |
666 | { | |
667 | struct vc5_driver_data *vc5 = data; | |
668 | unsigned int idx = clkspec->args[0]; | |
669 | ||
9adddb01 | 670 | if (idx >= vc5->chip_info->clk_out_cnt) |
3e1aec4e MV |
671 | return ERR_PTR(-EINVAL); |
672 | ||
673 | return &vc5->clk_out[idx].hw; | |
674 | } | |
675 | ||
676 | static int vc5_map_index_to_output(const enum vc5_model model, | |
677 | const unsigned int n) | |
678 | { | |
679 | switch (model) { | |
680 | case IDT_VC5_5P49V5933: | |
681 | return (n == 0) ? 0 : 3; | |
682 | case IDT_VC5_5P49V5923: | |
b1911555 | 683 | case IDT_VC5_5P49V5925: |
1193e14f | 684 | case IDT_VC5_5P49V5935: |
dbf6b16f | 685 | case IDT_VC6_5P49V6901: |
3e1aec4e MV |
686 | default: |
687 | return n; | |
688 | } | |
689 | } | |
690 | ||
691 | static const struct of_device_id clk_vc5_of_match[]; | |
692 | ||
693 | static int vc5_probe(struct i2c_client *client, | |
694 | const struct i2c_device_id *id) | |
695 | { | |
3e1aec4e MV |
696 | struct vc5_driver_data *vc5; |
697 | struct clk_init_data init; | |
698 | const char *parent_names[2]; | |
9adddb01 | 699 | unsigned int n, idx = 0; |
3e1aec4e MV |
700 | int ret; |
701 | ||
702 | vc5 = devm_kzalloc(&client->dev, sizeof(*vc5), GFP_KERNEL); | |
703 | if (vc5 == NULL) | |
704 | return -ENOMEM; | |
705 | ||
706 | i2c_set_clientdata(client, vc5); | |
707 | vc5->client = client; | |
9adddb01 | 708 | vc5->chip_info = of_device_get_match_data(&client->dev); |
3e1aec4e MV |
709 | |
710 | vc5->pin_xin = devm_clk_get(&client->dev, "xin"); | |
711 | if (PTR_ERR(vc5->pin_xin) == -EPROBE_DEFER) | |
712 | return -EPROBE_DEFER; | |
713 | ||
714 | vc5->pin_clkin = devm_clk_get(&client->dev, "clkin"); | |
715 | if (PTR_ERR(vc5->pin_clkin) == -EPROBE_DEFER) | |
716 | return -EPROBE_DEFER; | |
717 | ||
718 | vc5->regmap = devm_regmap_init_i2c(client, &vc5_regmap_config); | |
719 | if (IS_ERR(vc5->regmap)) { | |
720 | dev_err(&client->dev, "failed to allocate register map\n"); | |
721 | return PTR_ERR(vc5->regmap); | |
722 | } | |
723 | ||
724 | /* Register clock input mux */ | |
725 | memset(&init, 0, sizeof(init)); | |
726 | ||
727 | if (!IS_ERR(vc5->pin_xin)) { | |
728 | vc5->clk_mux_ins |= VC5_MUX_IN_XIN; | |
729 | parent_names[init.num_parents++] = __clk_get_name(vc5->pin_xin); | |
9adddb01 | 730 | } else if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL) { |
3e1aec4e MV |
731 | vc5->pin_xin = clk_register_fixed_rate(&client->dev, |
732 | "internal-xtal", NULL, | |
733 | 0, 25000000); | |
734 | if (IS_ERR(vc5->pin_xin)) | |
735 | return PTR_ERR(vc5->pin_xin); | |
736 | vc5->clk_mux_ins |= VC5_MUX_IN_XIN; | |
737 | parent_names[init.num_parents++] = __clk_get_name(vc5->pin_xin); | |
738 | } | |
739 | ||
740 | if (!IS_ERR(vc5->pin_clkin)) { | |
741 | vc5->clk_mux_ins |= VC5_MUX_IN_CLKIN; | |
742 | parent_names[init.num_parents++] = | |
743 | __clk_get_name(vc5->pin_clkin); | |
744 | } | |
745 | ||
746 | if (!init.num_parents) { | |
747 | dev_err(&client->dev, "no input clock specified!\n"); | |
748 | return -EINVAL; | |
749 | } | |
750 | ||
751 | init.name = vc5_mux_names[0]; | |
752 | init.ops = &vc5_mux_ops; | |
753 | init.flags = 0; | |
754 | init.parent_names = parent_names; | |
755 | vc5->clk_mux.init = &init; | |
756 | ret = devm_clk_hw_register(&client->dev, &vc5->clk_mux); | |
757 | if (ret) { | |
758 | dev_err(&client->dev, "unable to register %s\n", init.name); | |
759 | goto err_clk; | |
760 | } | |
761 | ||
8c1ebe97 MV |
762 | if (vc5->chip_info->flags & VC5_HAS_PFD_FREQ_DBL) { |
763 | /* Register frequency doubler */ | |
764 | memset(&init, 0, sizeof(init)); | |
765 | init.name = vc5_dbl_names[0]; | |
766 | init.ops = &vc5_dbl_ops; | |
767 | init.flags = CLK_SET_RATE_PARENT; | |
768 | init.parent_names = vc5_mux_names; | |
769 | init.num_parents = 1; | |
770 | vc5->clk_mul.init = &init; | |
771 | ret = devm_clk_hw_register(&client->dev, &vc5->clk_mul); | |
772 | if (ret) { | |
773 | dev_err(&client->dev, "unable to register %s\n", | |
774 | init.name); | |
775 | goto err_clk; | |
776 | } | |
777 | } | |
778 | ||
55997db5 MV |
779 | /* Register PFD */ |
780 | memset(&init, 0, sizeof(init)); | |
781 | init.name = vc5_pfd_names[0]; | |
782 | init.ops = &vc5_pfd_ops; | |
783 | init.flags = CLK_SET_RATE_PARENT; | |
8c1ebe97 MV |
784 | if (vc5->chip_info->flags & VC5_HAS_PFD_FREQ_DBL) |
785 | init.parent_names = vc5_dbl_names; | |
786 | else | |
787 | init.parent_names = vc5_mux_names; | |
55997db5 MV |
788 | init.num_parents = 1; |
789 | vc5->clk_pfd.init = &init; | |
790 | ret = devm_clk_hw_register(&client->dev, &vc5->clk_pfd); | |
791 | if (ret) { | |
792 | dev_err(&client->dev, "unable to register %s\n", init.name); | |
793 | goto err_clk; | |
794 | } | |
795 | ||
3e1aec4e MV |
796 | /* Register PLL */ |
797 | memset(&init, 0, sizeof(init)); | |
798 | init.name = vc5_pll_names[0]; | |
799 | init.ops = &vc5_pll_ops; | |
800 | init.flags = CLK_SET_RATE_PARENT; | |
55997db5 | 801 | init.parent_names = vc5_pfd_names; |
3e1aec4e MV |
802 | init.num_parents = 1; |
803 | vc5->clk_pll.num = 0; | |
804 | vc5->clk_pll.vc5 = vc5; | |
805 | vc5->clk_pll.hw.init = &init; | |
806 | ret = devm_clk_hw_register(&client->dev, &vc5->clk_pll.hw); | |
807 | if (ret) { | |
808 | dev_err(&client->dev, "unable to register %s\n", init.name); | |
809 | goto err_clk; | |
810 | } | |
811 | ||
812 | /* Register FODs */ | |
9adddb01 AF |
813 | for (n = 0; n < vc5->chip_info->clk_fod_cnt; n++) { |
814 | idx = vc5_map_index_to_output(vc5->chip_info->model, n); | |
3e1aec4e MV |
815 | memset(&init, 0, sizeof(init)); |
816 | init.name = vc5_fod_names[idx]; | |
817 | init.ops = &vc5_fod_ops; | |
818 | init.flags = CLK_SET_RATE_PARENT; | |
819 | init.parent_names = vc5_pll_names; | |
820 | init.num_parents = 1; | |
821 | vc5->clk_fod[n].num = idx; | |
822 | vc5->clk_fod[n].vc5 = vc5; | |
823 | vc5->clk_fod[n].hw.init = &init; | |
824 | ret = devm_clk_hw_register(&client->dev, &vc5->clk_fod[n].hw); | |
825 | if (ret) { | |
826 | dev_err(&client->dev, "unable to register %s\n", | |
827 | init.name); | |
828 | goto err_clk; | |
829 | } | |
830 | } | |
831 | ||
832 | /* Register MUX-connected OUT0_I2C_SELB output */ | |
833 | memset(&init, 0, sizeof(init)); | |
834 | init.name = vc5_clk_out_names[0]; | |
835 | init.ops = &vc5_clk_out_ops; | |
836 | init.flags = CLK_SET_RATE_PARENT; | |
837 | init.parent_names = vc5_mux_names; | |
838 | init.num_parents = 1; | |
839 | vc5->clk_out[0].num = idx; | |
840 | vc5->clk_out[0].vc5 = vc5; | |
841 | vc5->clk_out[0].hw.init = &init; | |
842 | ret = devm_clk_hw_register(&client->dev, &vc5->clk_out[0].hw); | |
843 | if (ret) { | |
844 | dev_err(&client->dev, "unable to register %s\n", | |
845 | init.name); | |
846 | goto err_clk; | |
847 | } | |
848 | ||
849 | /* Register FOD-connected OUTx outputs */ | |
9adddb01 AF |
850 | for (n = 1; n < vc5->chip_info->clk_out_cnt; n++) { |
851 | idx = vc5_map_index_to_output(vc5->chip_info->model, n - 1); | |
3e1aec4e MV |
852 | parent_names[0] = vc5_fod_names[idx]; |
853 | if (n == 1) | |
854 | parent_names[1] = vc5_mux_names[0]; | |
855 | else | |
856 | parent_names[1] = vc5_clk_out_names[n - 1]; | |
857 | ||
858 | memset(&init, 0, sizeof(init)); | |
859 | init.name = vc5_clk_out_names[idx + 1]; | |
860 | init.ops = &vc5_clk_out_ops; | |
861 | init.flags = CLK_SET_RATE_PARENT; | |
862 | init.parent_names = parent_names; | |
863 | init.num_parents = 2; | |
864 | vc5->clk_out[n].num = idx; | |
865 | vc5->clk_out[n].vc5 = vc5; | |
866 | vc5->clk_out[n].hw.init = &init; | |
867 | ret = devm_clk_hw_register(&client->dev, | |
868 | &vc5->clk_out[n].hw); | |
869 | if (ret) { | |
870 | dev_err(&client->dev, "unable to register %s\n", | |
871 | init.name); | |
872 | goto err_clk; | |
873 | } | |
874 | } | |
875 | ||
876 | ret = of_clk_add_hw_provider(client->dev.of_node, vc5_of_clk_get, vc5); | |
877 | if (ret) { | |
878 | dev_err(&client->dev, "unable to add clk provider\n"); | |
879 | goto err_clk; | |
880 | } | |
881 | ||
882 | return 0; | |
883 | ||
884 | err_clk: | |
9adddb01 | 885 | if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL) |
3e1aec4e MV |
886 | clk_unregister_fixed_rate(vc5->pin_xin); |
887 | return ret; | |
888 | } | |
889 | ||
890 | static int vc5_remove(struct i2c_client *client) | |
891 | { | |
892 | struct vc5_driver_data *vc5 = i2c_get_clientdata(client); | |
893 | ||
894 | of_clk_del_provider(client->dev.of_node); | |
895 | ||
9adddb01 | 896 | if (vc5->chip_info->flags & VC5_HAS_INTERNAL_XTAL) |
3e1aec4e MV |
897 | clk_unregister_fixed_rate(vc5->pin_xin); |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
8cbdc1f0 MV |
902 | static int __maybe_unused vc5_suspend(struct device *dev) |
903 | { | |
904 | struct vc5_driver_data *vc5 = dev_get_drvdata(dev); | |
905 | ||
906 | regcache_cache_only(vc5->regmap, true); | |
907 | regcache_mark_dirty(vc5->regmap); | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static int __maybe_unused vc5_resume(struct device *dev) | |
913 | { | |
914 | struct vc5_driver_data *vc5 = dev_get_drvdata(dev); | |
915 | int ret; | |
916 | ||
917 | regcache_cache_only(vc5->regmap, false); | |
918 | ret = regcache_sync(vc5->regmap); | |
919 | if (ret) | |
920 | dev_err(dev, "Failed to restore register map: %d\n", ret); | |
921 | return ret; | |
922 | } | |
923 | ||
9adddb01 AF |
924 | static const struct vc5_chip_info idt_5p49v5923_info = { |
925 | .model = IDT_VC5_5P49V5923, | |
926 | .clk_fod_cnt = 2, | |
927 | .clk_out_cnt = 3, | |
928 | .flags = 0, | |
929 | }; | |
930 | ||
b1911555 VB |
931 | static const struct vc5_chip_info idt_5p49v5925_info = { |
932 | .model = IDT_VC5_5P49V5925, | |
933 | .clk_fod_cnt = 4, | |
934 | .clk_out_cnt = 5, | |
935 | .flags = 0, | |
936 | }; | |
937 | ||
9adddb01 AF |
938 | static const struct vc5_chip_info idt_5p49v5933_info = { |
939 | .model = IDT_VC5_5P49V5933, | |
940 | .clk_fod_cnt = 2, | |
941 | .clk_out_cnt = 3, | |
942 | .flags = VC5_HAS_INTERNAL_XTAL, | |
943 | }; | |
944 | ||
1193e14f AF |
945 | static const struct vc5_chip_info idt_5p49v5935_info = { |
946 | .model = IDT_VC5_5P49V5935, | |
947 | .clk_fod_cnt = 4, | |
948 | .clk_out_cnt = 5, | |
949 | .flags = VC5_HAS_INTERNAL_XTAL, | |
950 | }; | |
951 | ||
dbf6b16f MV |
952 | static const struct vc5_chip_info idt_5p49v6901_info = { |
953 | .model = IDT_VC6_5P49V6901, | |
954 | .clk_fod_cnt = 4, | |
955 | .clk_out_cnt = 5, | |
956 | .flags = VC5_HAS_PFD_FREQ_DBL, | |
957 | }; | |
958 | ||
3e1aec4e MV |
959 | static const struct i2c_device_id vc5_id[] = { |
960 | { "5p49v5923", .driver_data = IDT_VC5_5P49V5923 }, | |
b1911555 | 961 | { "5p49v5925", .driver_data = IDT_VC5_5P49V5925 }, |
3e1aec4e | 962 | { "5p49v5933", .driver_data = IDT_VC5_5P49V5933 }, |
1193e14f | 963 | { "5p49v5935", .driver_data = IDT_VC5_5P49V5935 }, |
dbf6b16f | 964 | { "5p49v6901", .driver_data = IDT_VC6_5P49V6901 }, |
3e1aec4e MV |
965 | { } |
966 | }; | |
967 | MODULE_DEVICE_TABLE(i2c, vc5_id); | |
968 | ||
969 | static const struct of_device_id clk_vc5_of_match[] = { | |
9adddb01 | 970 | { .compatible = "idt,5p49v5923", .data = &idt_5p49v5923_info }, |
b1911555 | 971 | { .compatible = "idt,5p49v5925", .data = &idt_5p49v5925_info }, |
9adddb01 | 972 | { .compatible = "idt,5p49v5933", .data = &idt_5p49v5933_info }, |
1193e14f | 973 | { .compatible = "idt,5p49v5935", .data = &idt_5p49v5935_info }, |
dbf6b16f | 974 | { .compatible = "idt,5p49v6901", .data = &idt_5p49v6901_info }, |
3e1aec4e MV |
975 | { }, |
976 | }; | |
977 | MODULE_DEVICE_TABLE(of, clk_vc5_of_match); | |
978 | ||
8cbdc1f0 MV |
979 | static SIMPLE_DEV_PM_OPS(vc5_pm_ops, vc5_suspend, vc5_resume); |
980 | ||
3e1aec4e MV |
981 | static struct i2c_driver vc5_driver = { |
982 | .driver = { | |
983 | .name = "vc5", | |
8cbdc1f0 | 984 | .pm = &vc5_pm_ops, |
3e1aec4e MV |
985 | .of_match_table = clk_vc5_of_match, |
986 | }, | |
987 | .probe = vc5_probe, | |
988 | .remove = vc5_remove, | |
989 | .id_table = vc5_id, | |
990 | }; | |
991 | module_i2c_driver(vc5_driver); | |
992 | ||
993 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
994 | MODULE_DESCRIPTION("IDT VersaClock 5 driver"); | |
995 | MODULE_LICENSE("GPL"); |