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5f97f7f9 HS |
1 | /* |
2 | * Copyright (C) 2005-2006 Atmel Corporation | |
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 version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | #include <linux/clk.h> | |
9 | #include <linux/init.h> | |
10 | #include <linux/platform_device.h> | |
11 | ||
12 | #include <asm/io.h> | |
13 | ||
14 | #include <asm/arch/board.h> | |
15 | #include <asm/arch/portmux.h> | |
16 | #include <asm/arch/sm.h> | |
17 | ||
18 | #include "clock.h" | |
19 | #include "pio.h" | |
20 | #include "sm.h" | |
21 | ||
22 | #define PBMEM(base) \ | |
23 | { \ | |
24 | .start = base, \ | |
25 | .end = base + 0x3ff, \ | |
26 | .flags = IORESOURCE_MEM, \ | |
27 | } | |
28 | #define IRQ(num) \ | |
29 | { \ | |
30 | .start = num, \ | |
31 | .end = num, \ | |
32 | .flags = IORESOURCE_IRQ, \ | |
33 | } | |
34 | #define NAMED_IRQ(num, _name) \ | |
35 | { \ | |
36 | .start = num, \ | |
37 | .end = num, \ | |
38 | .name = _name, \ | |
39 | .flags = IORESOURCE_IRQ, \ | |
40 | } | |
41 | ||
42 | #define DEFINE_DEV(_name, _id) \ | |
43 | static struct platform_device _name##_id##_device = { \ | |
44 | .name = #_name, \ | |
45 | .id = _id, \ | |
46 | .resource = _name##_id##_resource, \ | |
47 | .num_resources = ARRAY_SIZE(_name##_id##_resource), \ | |
48 | } | |
49 | #define DEFINE_DEV_DATA(_name, _id) \ | |
50 | static struct platform_device _name##_id##_device = { \ | |
51 | .name = #_name, \ | |
52 | .id = _id, \ | |
53 | .dev = { \ | |
54 | .platform_data = &_name##_id##_data, \ | |
55 | }, \ | |
56 | .resource = _name##_id##_resource, \ | |
57 | .num_resources = ARRAY_SIZE(_name##_id##_resource), \ | |
58 | } | |
59 | ||
60 | #define DEV_CLK(_name, devname, bus, _index) \ | |
61 | static struct clk devname##_##_name = { \ | |
62 | .name = #_name, \ | |
63 | .dev = &devname##_device.dev, \ | |
64 | .parent = &bus##_clk, \ | |
65 | .mode = bus##_clk_mode, \ | |
66 | .get_rate = bus##_clk_get_rate, \ | |
67 | .index = _index, \ | |
68 | } | |
69 | ||
70 | enum { | |
71 | PIOA, | |
72 | PIOB, | |
73 | PIOC, | |
74 | PIOD, | |
75 | }; | |
76 | ||
77 | enum { | |
78 | FUNC_A, | |
79 | FUNC_B, | |
80 | }; | |
81 | ||
82 | unsigned long at32ap7000_osc_rates[3] = { | |
83 | [0] = 32768, | |
84 | /* FIXME: these are ATSTK1002-specific */ | |
85 | [1] = 20000000, | |
86 | [2] = 12000000, | |
87 | }; | |
88 | ||
89 | static unsigned long osc_get_rate(struct clk *clk) | |
90 | { | |
91 | return at32ap7000_osc_rates[clk->index]; | |
92 | } | |
93 | ||
94 | static unsigned long pll_get_rate(struct clk *clk, unsigned long control) | |
95 | { | |
96 | unsigned long div, mul, rate; | |
97 | ||
98 | if (!(control & SM_BIT(PLLEN))) | |
99 | return 0; | |
100 | ||
101 | div = SM_BFEXT(PLLDIV, control) + 1; | |
102 | mul = SM_BFEXT(PLLMUL, control) + 1; | |
103 | ||
104 | rate = clk->parent->get_rate(clk->parent); | |
105 | rate = (rate + div / 2) / div; | |
106 | rate *= mul; | |
107 | ||
108 | return rate; | |
109 | } | |
110 | ||
111 | static unsigned long pll0_get_rate(struct clk *clk) | |
112 | { | |
113 | u32 control; | |
114 | ||
115 | control = sm_readl(&system_manager, PM_PLL0); | |
116 | ||
117 | return pll_get_rate(clk, control); | |
118 | } | |
119 | ||
120 | static unsigned long pll1_get_rate(struct clk *clk) | |
121 | { | |
122 | u32 control; | |
123 | ||
124 | control = sm_readl(&system_manager, PM_PLL1); | |
125 | ||
126 | return pll_get_rate(clk, control); | |
127 | } | |
128 | ||
129 | /* | |
130 | * The AT32AP7000 has five primary clock sources: One 32kHz | |
131 | * oscillator, two crystal oscillators and two PLLs. | |
132 | */ | |
133 | static struct clk osc32k = { | |
134 | .name = "osc32k", | |
135 | .get_rate = osc_get_rate, | |
136 | .users = 1, | |
137 | .index = 0, | |
138 | }; | |
139 | static struct clk osc0 = { | |
140 | .name = "osc0", | |
141 | .get_rate = osc_get_rate, | |
142 | .users = 1, | |
143 | .index = 1, | |
144 | }; | |
145 | static struct clk osc1 = { | |
146 | .name = "osc1", | |
147 | .get_rate = osc_get_rate, | |
148 | .index = 2, | |
149 | }; | |
150 | static struct clk pll0 = { | |
151 | .name = "pll0", | |
152 | .get_rate = pll0_get_rate, | |
153 | .parent = &osc0, | |
154 | }; | |
155 | static struct clk pll1 = { | |
156 | .name = "pll1", | |
157 | .get_rate = pll1_get_rate, | |
158 | .parent = &osc0, | |
159 | }; | |
160 | ||
161 | /* | |
162 | * The main clock can be either osc0 or pll0. The boot loader may | |
163 | * have chosen one for us, so we don't really know which one until we | |
164 | * have a look at the SM. | |
165 | */ | |
166 | static struct clk *main_clock; | |
167 | ||
168 | /* | |
169 | * Synchronous clocks are generated from the main clock. The clocks | |
170 | * must satisfy the constraint | |
171 | * fCPU >= fHSB >= fPB | |
172 | * i.e. each clock must not be faster than its parent. | |
173 | */ | |
174 | static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift) | |
175 | { | |
176 | return main_clock->get_rate(main_clock) >> shift; | |
177 | }; | |
178 | ||
179 | static void cpu_clk_mode(struct clk *clk, int enabled) | |
180 | { | |
181 | struct at32_sm *sm = &system_manager; | |
182 | unsigned long flags; | |
183 | u32 mask; | |
184 | ||
185 | spin_lock_irqsave(&sm->lock, flags); | |
186 | mask = sm_readl(sm, PM_CPU_MASK); | |
187 | if (enabled) | |
188 | mask |= 1 << clk->index; | |
189 | else | |
190 | mask &= ~(1 << clk->index); | |
191 | sm_writel(sm, PM_CPU_MASK, mask); | |
192 | spin_unlock_irqrestore(&sm->lock, flags); | |
193 | } | |
194 | ||
195 | static unsigned long cpu_clk_get_rate(struct clk *clk) | |
196 | { | |
197 | unsigned long cksel, shift = 0; | |
198 | ||
199 | cksel = sm_readl(&system_manager, PM_CKSEL); | |
200 | if (cksel & SM_BIT(CPUDIV)) | |
201 | shift = SM_BFEXT(CPUSEL, cksel) + 1; | |
202 | ||
203 | return bus_clk_get_rate(clk, shift); | |
204 | } | |
205 | ||
206 | static void hsb_clk_mode(struct clk *clk, int enabled) | |
207 | { | |
208 | struct at32_sm *sm = &system_manager; | |
209 | unsigned long flags; | |
210 | u32 mask; | |
211 | ||
212 | spin_lock_irqsave(&sm->lock, flags); | |
213 | mask = sm_readl(sm, PM_HSB_MASK); | |
214 | if (enabled) | |
215 | mask |= 1 << clk->index; | |
216 | else | |
217 | mask &= ~(1 << clk->index); | |
218 | sm_writel(sm, PM_HSB_MASK, mask); | |
219 | spin_unlock_irqrestore(&sm->lock, flags); | |
220 | } | |
221 | ||
222 | static unsigned long hsb_clk_get_rate(struct clk *clk) | |
223 | { | |
224 | unsigned long cksel, shift = 0; | |
225 | ||
226 | cksel = sm_readl(&system_manager, PM_CKSEL); | |
227 | if (cksel & SM_BIT(HSBDIV)) | |
228 | shift = SM_BFEXT(HSBSEL, cksel) + 1; | |
229 | ||
230 | return bus_clk_get_rate(clk, shift); | |
231 | } | |
232 | ||
233 | static void pba_clk_mode(struct clk *clk, int enabled) | |
234 | { | |
235 | struct at32_sm *sm = &system_manager; | |
236 | unsigned long flags; | |
237 | u32 mask; | |
238 | ||
239 | spin_lock_irqsave(&sm->lock, flags); | |
240 | mask = sm_readl(sm, PM_PBA_MASK); | |
241 | if (enabled) | |
242 | mask |= 1 << clk->index; | |
243 | else | |
244 | mask &= ~(1 << clk->index); | |
245 | sm_writel(sm, PM_PBA_MASK, mask); | |
246 | spin_unlock_irqrestore(&sm->lock, flags); | |
247 | } | |
248 | ||
249 | static unsigned long pba_clk_get_rate(struct clk *clk) | |
250 | { | |
251 | unsigned long cksel, shift = 0; | |
252 | ||
253 | cksel = sm_readl(&system_manager, PM_CKSEL); | |
254 | if (cksel & SM_BIT(PBADIV)) | |
255 | shift = SM_BFEXT(PBASEL, cksel) + 1; | |
256 | ||
257 | return bus_clk_get_rate(clk, shift); | |
258 | } | |
259 | ||
260 | static void pbb_clk_mode(struct clk *clk, int enabled) | |
261 | { | |
262 | struct at32_sm *sm = &system_manager; | |
263 | unsigned long flags; | |
264 | u32 mask; | |
265 | ||
266 | spin_lock_irqsave(&sm->lock, flags); | |
267 | mask = sm_readl(sm, PM_PBB_MASK); | |
268 | if (enabled) | |
269 | mask |= 1 << clk->index; | |
270 | else | |
271 | mask &= ~(1 << clk->index); | |
272 | sm_writel(sm, PM_PBB_MASK, mask); | |
273 | spin_unlock_irqrestore(&sm->lock, flags); | |
274 | } | |
275 | ||
276 | static unsigned long pbb_clk_get_rate(struct clk *clk) | |
277 | { | |
278 | unsigned long cksel, shift = 0; | |
279 | ||
280 | cksel = sm_readl(&system_manager, PM_CKSEL); | |
281 | if (cksel & SM_BIT(PBBDIV)) | |
282 | shift = SM_BFEXT(PBBSEL, cksel) + 1; | |
283 | ||
284 | return bus_clk_get_rate(clk, shift); | |
285 | } | |
286 | ||
287 | static struct clk cpu_clk = { | |
288 | .name = "cpu", | |
289 | .get_rate = cpu_clk_get_rate, | |
290 | .users = 1, | |
291 | }; | |
292 | static struct clk hsb_clk = { | |
293 | .name = "hsb", | |
294 | .parent = &cpu_clk, | |
295 | .get_rate = hsb_clk_get_rate, | |
296 | }; | |
297 | static struct clk pba_clk = { | |
298 | .name = "pba", | |
299 | .parent = &hsb_clk, | |
300 | .mode = hsb_clk_mode, | |
301 | .get_rate = pba_clk_get_rate, | |
302 | .index = 1, | |
303 | }; | |
304 | static struct clk pbb_clk = { | |
305 | .name = "pbb", | |
306 | .parent = &hsb_clk, | |
307 | .mode = hsb_clk_mode, | |
308 | .get_rate = pbb_clk_get_rate, | |
309 | .users = 1, | |
310 | .index = 2, | |
311 | }; | |
312 | ||
313 | /* -------------------------------------------------------------------- | |
314 | * Generic Clock operations | |
315 | * -------------------------------------------------------------------- */ | |
316 | ||
317 | static void genclk_mode(struct clk *clk, int enabled) | |
318 | { | |
319 | u32 control; | |
320 | ||
321 | BUG_ON(clk->index > 7); | |
322 | ||
323 | control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index); | |
324 | if (enabled) | |
325 | control |= SM_BIT(CEN); | |
326 | else | |
327 | control &= ~SM_BIT(CEN); | |
328 | sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, control); | |
329 | } | |
330 | ||
331 | static unsigned long genclk_get_rate(struct clk *clk) | |
332 | { | |
333 | u32 control; | |
334 | unsigned long div = 1; | |
335 | ||
336 | BUG_ON(clk->index > 7); | |
337 | ||
338 | if (!clk->parent) | |
339 | return 0; | |
340 | ||
341 | control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index); | |
342 | if (control & SM_BIT(DIVEN)) | |
343 | div = 2 * (SM_BFEXT(DIV, control) + 1); | |
344 | ||
345 | return clk->parent->get_rate(clk->parent) / div; | |
346 | } | |
347 | ||
348 | static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply) | |
349 | { | |
350 | u32 control; | |
351 | unsigned long parent_rate, actual_rate, div; | |
352 | ||
353 | BUG_ON(clk->index > 7); | |
354 | ||
355 | if (!clk->parent) | |
356 | return 0; | |
357 | ||
358 | parent_rate = clk->parent->get_rate(clk->parent); | |
359 | control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index); | |
360 | ||
361 | if (rate > 3 * parent_rate / 4) { | |
362 | actual_rate = parent_rate; | |
363 | control &= ~SM_BIT(DIVEN); | |
364 | } else { | |
365 | div = (parent_rate + rate) / (2 * rate) - 1; | |
366 | control = SM_BFINS(DIV, div, control) | SM_BIT(DIVEN); | |
367 | actual_rate = parent_rate / (2 * (div + 1)); | |
368 | } | |
369 | ||
370 | printk("clk %s: new rate %lu (actual rate %lu)\n", | |
371 | clk->name, rate, actual_rate); | |
372 | ||
373 | if (apply) | |
374 | sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, | |
375 | control); | |
376 | ||
377 | return actual_rate; | |
378 | } | |
379 | ||
380 | int genclk_set_parent(struct clk *clk, struct clk *parent) | |
381 | { | |
382 | u32 control; | |
383 | ||
384 | BUG_ON(clk->index > 7); | |
385 | ||
386 | printk("clk %s: new parent %s (was %s)\n", | |
387 | clk->name, parent->name, | |
388 | clk->parent ? clk->parent->name : "(null)"); | |
389 | ||
390 | control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index); | |
391 | ||
392 | if (parent == &osc1 || parent == &pll1) | |
393 | control |= SM_BIT(OSCSEL); | |
394 | else if (parent == &osc0 || parent == &pll0) | |
395 | control &= ~SM_BIT(OSCSEL); | |
396 | else | |
397 | return -EINVAL; | |
398 | ||
399 | if (parent == &pll0 || parent == &pll1) | |
400 | control |= SM_BIT(PLLSEL); | |
401 | else | |
402 | control &= ~SM_BIT(PLLSEL); | |
403 | ||
404 | sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, control); | |
405 | clk->parent = parent; | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | /* -------------------------------------------------------------------- | |
411 | * System peripherals | |
412 | * -------------------------------------------------------------------- */ | |
413 | static struct resource sm_resource[] = { | |
414 | PBMEM(0xfff00000), | |
415 | NAMED_IRQ(19, "eim"), | |
416 | NAMED_IRQ(20, "pm"), | |
417 | NAMED_IRQ(21, "rtc"), | |
418 | }; | |
419 | struct platform_device at32_sm_device = { | |
420 | .name = "sm", | |
421 | .id = 0, | |
422 | .resource = sm_resource, | |
423 | .num_resources = ARRAY_SIZE(sm_resource), | |
424 | }; | |
425 | DEV_CLK(pclk, at32_sm, pbb, 0); | |
426 | ||
427 | static struct resource intc0_resource[] = { | |
428 | PBMEM(0xfff00400), | |
429 | }; | |
430 | struct platform_device at32_intc0_device = { | |
431 | .name = "intc", | |
432 | .id = 0, | |
433 | .resource = intc0_resource, | |
434 | .num_resources = ARRAY_SIZE(intc0_resource), | |
435 | }; | |
436 | DEV_CLK(pclk, at32_intc0, pbb, 1); | |
437 | ||
438 | static struct clk ebi_clk = { | |
439 | .name = "ebi", | |
440 | .parent = &hsb_clk, | |
441 | .mode = hsb_clk_mode, | |
442 | .get_rate = hsb_clk_get_rate, | |
443 | .users = 1, | |
444 | }; | |
445 | static struct clk hramc_clk = { | |
446 | .name = "hramc", | |
447 | .parent = &hsb_clk, | |
448 | .mode = hsb_clk_mode, | |
449 | .get_rate = hsb_clk_get_rate, | |
450 | .users = 1, | |
451 | }; | |
452 | ||
453 | static struct platform_device pdc_device = { | |
454 | .name = "pdc", | |
455 | .id = 0, | |
456 | }; | |
457 | DEV_CLK(hclk, pdc, hsb, 4); | |
458 | DEV_CLK(pclk, pdc, pba, 16); | |
459 | ||
460 | static struct clk pico_clk = { | |
461 | .name = "pico", | |
462 | .parent = &cpu_clk, | |
463 | .mode = cpu_clk_mode, | |
464 | .get_rate = cpu_clk_get_rate, | |
465 | .users = 1, | |
466 | }; | |
467 | ||
468 | /* -------------------------------------------------------------------- | |
469 | * PIO | |
470 | * -------------------------------------------------------------------- */ | |
471 | ||
472 | static struct resource pio0_resource[] = { | |
473 | PBMEM(0xffe02800), | |
474 | IRQ(13), | |
475 | }; | |
476 | DEFINE_DEV(pio, 0); | |
477 | DEV_CLK(mck, pio0, pba, 10); | |
478 | ||
479 | static struct resource pio1_resource[] = { | |
480 | PBMEM(0xffe02c00), | |
481 | IRQ(14), | |
482 | }; | |
483 | DEFINE_DEV(pio, 1); | |
484 | DEV_CLK(mck, pio1, pba, 11); | |
485 | ||
486 | static struct resource pio2_resource[] = { | |
487 | PBMEM(0xffe03000), | |
488 | IRQ(15), | |
489 | }; | |
490 | DEFINE_DEV(pio, 2); | |
491 | DEV_CLK(mck, pio2, pba, 12); | |
492 | ||
493 | static struct resource pio3_resource[] = { | |
494 | PBMEM(0xffe03400), | |
495 | IRQ(16), | |
496 | }; | |
497 | DEFINE_DEV(pio, 3); | |
498 | DEV_CLK(mck, pio3, pba, 13); | |
499 | ||
500 | void __init at32_add_system_devices(void) | |
501 | { | |
502 | system_manager.eim_first_irq = NR_INTERNAL_IRQS; | |
503 | ||
504 | platform_device_register(&at32_sm_device); | |
505 | platform_device_register(&at32_intc0_device); | |
506 | platform_device_register(&pdc_device); | |
507 | ||
508 | platform_device_register(&pio0_device); | |
509 | platform_device_register(&pio1_device); | |
510 | platform_device_register(&pio2_device); | |
511 | platform_device_register(&pio3_device); | |
512 | } | |
513 | ||
514 | /* -------------------------------------------------------------------- | |
515 | * USART | |
516 | * -------------------------------------------------------------------- */ | |
517 | ||
518 | static struct resource usart0_resource[] = { | |
519 | PBMEM(0xffe00c00), | |
520 | IRQ(7), | |
521 | }; | |
522 | DEFINE_DEV(usart, 0); | |
523 | DEV_CLK(usart, usart0, pba, 4); | |
524 | ||
525 | static struct resource usart1_resource[] = { | |
526 | PBMEM(0xffe01000), | |
527 | IRQ(7), | |
528 | }; | |
529 | DEFINE_DEV(usart, 1); | |
530 | DEV_CLK(usart, usart1, pba, 4); | |
531 | ||
532 | static struct resource usart2_resource[] = { | |
533 | PBMEM(0xffe01400), | |
534 | IRQ(8), | |
535 | }; | |
536 | DEFINE_DEV(usart, 2); | |
537 | DEV_CLK(usart, usart2, pba, 5); | |
538 | ||
539 | static struct resource usart3_resource[] = { | |
540 | PBMEM(0xffe01800), | |
541 | IRQ(9), | |
542 | }; | |
543 | DEFINE_DEV(usart, 3); | |
544 | DEV_CLK(usart, usart3, pba, 6); | |
545 | ||
546 | static inline void configure_usart0_pins(void) | |
547 | { | |
548 | portmux_set_func(PIOA, 8, FUNC_B); /* RXD */ | |
549 | portmux_set_func(PIOA, 9, FUNC_B); /* TXD */ | |
550 | } | |
551 | ||
552 | static inline void configure_usart1_pins(void) | |
553 | { | |
554 | portmux_set_func(PIOA, 17, FUNC_A); /* RXD */ | |
555 | portmux_set_func(PIOA, 18, FUNC_A); /* TXD */ | |
556 | } | |
557 | ||
558 | static inline void configure_usart2_pins(void) | |
559 | { | |
560 | portmux_set_func(PIOB, 26, FUNC_B); /* RXD */ | |
561 | portmux_set_func(PIOB, 27, FUNC_B); /* TXD */ | |
562 | } | |
563 | ||
564 | static inline void configure_usart3_pins(void) | |
565 | { | |
566 | portmux_set_func(PIOB, 18, FUNC_B); /* RXD */ | |
567 | portmux_set_func(PIOB, 17, FUNC_B); /* TXD */ | |
568 | } | |
569 | ||
570 | static struct platform_device *setup_usart(unsigned int id) | |
571 | { | |
572 | struct platform_device *pdev; | |
573 | ||
574 | switch (id) { | |
575 | case 0: | |
576 | pdev = &usart0_device; | |
577 | configure_usart0_pins(); | |
578 | break; | |
579 | case 1: | |
580 | pdev = &usart1_device; | |
581 | configure_usart1_pins(); | |
582 | break; | |
583 | case 2: | |
584 | pdev = &usart2_device; | |
585 | configure_usart2_pins(); | |
586 | break; | |
587 | case 3: | |
588 | pdev = &usart3_device; | |
589 | configure_usart3_pins(); | |
590 | break; | |
591 | default: | |
592 | pdev = NULL; | |
593 | break; | |
594 | } | |
595 | ||
596 | return pdev; | |
597 | } | |
598 | ||
599 | struct platform_device *__init at32_add_device_usart(unsigned int id) | |
600 | { | |
601 | struct platform_device *pdev; | |
602 | ||
603 | pdev = setup_usart(id); | |
604 | if (pdev) | |
605 | platform_device_register(pdev); | |
606 | ||
607 | return pdev; | |
608 | } | |
609 | ||
610 | struct platform_device *at91_default_console_device; | |
611 | ||
612 | void __init at32_setup_serial_console(unsigned int usart_id) | |
613 | { | |
614 | at91_default_console_device = setup_usart(usart_id); | |
615 | } | |
616 | ||
617 | /* -------------------------------------------------------------------- | |
618 | * Ethernet | |
619 | * -------------------------------------------------------------------- */ | |
620 | ||
621 | static struct eth_platform_data macb0_data; | |
622 | static struct resource macb0_resource[] = { | |
623 | PBMEM(0xfff01800), | |
624 | IRQ(25), | |
625 | }; | |
626 | DEFINE_DEV_DATA(macb, 0); | |
627 | DEV_CLK(hclk, macb0, hsb, 8); | |
628 | DEV_CLK(pclk, macb0, pbb, 6); | |
629 | ||
630 | struct platform_device *__init | |
631 | at32_add_device_eth(unsigned int id, struct eth_platform_data *data) | |
632 | { | |
633 | struct platform_device *pdev; | |
634 | ||
635 | switch (id) { | |
636 | case 0: | |
637 | pdev = &macb0_device; | |
638 | ||
639 | portmux_set_func(PIOC, 3, FUNC_A); /* TXD0 */ | |
640 | portmux_set_func(PIOC, 4, FUNC_A); /* TXD1 */ | |
641 | portmux_set_func(PIOC, 7, FUNC_A); /* TXEN */ | |
642 | portmux_set_func(PIOC, 8, FUNC_A); /* TXCK */ | |
643 | portmux_set_func(PIOC, 9, FUNC_A); /* RXD0 */ | |
644 | portmux_set_func(PIOC, 10, FUNC_A); /* RXD1 */ | |
645 | portmux_set_func(PIOC, 13, FUNC_A); /* RXER */ | |
646 | portmux_set_func(PIOC, 15, FUNC_A); /* RXDV */ | |
647 | portmux_set_func(PIOC, 16, FUNC_A); /* MDC */ | |
648 | portmux_set_func(PIOC, 17, FUNC_A); /* MDIO */ | |
649 | ||
650 | if (!data->is_rmii) { | |
651 | portmux_set_func(PIOC, 0, FUNC_A); /* COL */ | |
652 | portmux_set_func(PIOC, 1, FUNC_A); /* CRS */ | |
653 | portmux_set_func(PIOC, 2, FUNC_A); /* TXER */ | |
654 | portmux_set_func(PIOC, 5, FUNC_A); /* TXD2 */ | |
655 | portmux_set_func(PIOC, 6, FUNC_A); /* TXD3 */ | |
656 | portmux_set_func(PIOC, 11, FUNC_A); /* RXD2 */ | |
657 | portmux_set_func(PIOC, 12, FUNC_A); /* RXD3 */ | |
658 | portmux_set_func(PIOC, 14, FUNC_A); /* RXCK */ | |
659 | portmux_set_func(PIOC, 18, FUNC_A); /* SPD */ | |
660 | } | |
661 | break; | |
662 | ||
663 | default: | |
664 | return NULL; | |
665 | } | |
666 | ||
667 | memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data)); | |
668 | platform_device_register(pdev); | |
669 | ||
670 | return pdev; | |
671 | } | |
672 | ||
673 | /* -------------------------------------------------------------------- | |
674 | * SPI | |
675 | * -------------------------------------------------------------------- */ | |
676 | static struct resource spi0_resource[] = { | |
677 | PBMEM(0xffe00000), | |
678 | IRQ(3), | |
679 | }; | |
680 | DEFINE_DEV(spi, 0); | |
681 | DEV_CLK(mck, spi0, pba, 0); | |
682 | ||
683 | struct platform_device *__init at32_add_device_spi(unsigned int id) | |
684 | { | |
685 | struct platform_device *pdev; | |
686 | ||
687 | switch (id) { | |
688 | case 0: | |
689 | pdev = &spi0_device; | |
690 | portmux_set_func(PIOA, 0, FUNC_A); /* MISO */ | |
691 | portmux_set_func(PIOA, 1, FUNC_A); /* MOSI */ | |
692 | portmux_set_func(PIOA, 2, FUNC_A); /* SCK */ | |
693 | portmux_set_func(PIOA, 3, FUNC_A); /* NPCS0 */ | |
694 | portmux_set_func(PIOA, 4, FUNC_A); /* NPCS1 */ | |
695 | portmux_set_func(PIOA, 5, FUNC_A); /* NPCS2 */ | |
696 | break; | |
697 | ||
698 | default: | |
699 | return NULL; | |
700 | } | |
701 | ||
702 | platform_device_register(pdev); | |
703 | return pdev; | |
704 | } | |
705 | ||
706 | /* -------------------------------------------------------------------- | |
707 | * LCDC | |
708 | * -------------------------------------------------------------------- */ | |
709 | static struct lcdc_platform_data lcdc0_data; | |
710 | static struct resource lcdc0_resource[] = { | |
711 | { | |
712 | .start = 0xff000000, | |
713 | .end = 0xff000fff, | |
714 | .flags = IORESOURCE_MEM, | |
715 | }, | |
716 | IRQ(1), | |
717 | }; | |
718 | DEFINE_DEV_DATA(lcdc, 0); | |
719 | DEV_CLK(hclk, lcdc0, hsb, 7); | |
720 | static struct clk lcdc0_pixclk = { | |
721 | .name = "pixclk", | |
722 | .dev = &lcdc0_device.dev, | |
723 | .mode = genclk_mode, | |
724 | .get_rate = genclk_get_rate, | |
725 | .set_rate = genclk_set_rate, | |
726 | .set_parent = genclk_set_parent, | |
727 | .index = 7, | |
728 | }; | |
729 | ||
730 | struct platform_device *__init | |
731 | at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data) | |
732 | { | |
733 | struct platform_device *pdev; | |
734 | ||
735 | switch (id) { | |
736 | case 0: | |
737 | pdev = &lcdc0_device; | |
738 | portmux_set_func(PIOC, 19, FUNC_A); /* CC */ | |
739 | portmux_set_func(PIOC, 20, FUNC_A); /* HSYNC */ | |
740 | portmux_set_func(PIOC, 21, FUNC_A); /* PCLK */ | |
741 | portmux_set_func(PIOC, 22, FUNC_A); /* VSYNC */ | |
742 | portmux_set_func(PIOC, 23, FUNC_A); /* DVAL */ | |
743 | portmux_set_func(PIOC, 24, FUNC_A); /* MODE */ | |
744 | portmux_set_func(PIOC, 25, FUNC_A); /* PWR */ | |
745 | portmux_set_func(PIOC, 26, FUNC_A); /* DATA0 */ | |
746 | portmux_set_func(PIOC, 27, FUNC_A); /* DATA1 */ | |
747 | portmux_set_func(PIOC, 28, FUNC_A); /* DATA2 */ | |
748 | portmux_set_func(PIOC, 29, FUNC_A); /* DATA3 */ | |
749 | portmux_set_func(PIOC, 30, FUNC_A); /* DATA4 */ | |
750 | portmux_set_func(PIOC, 31, FUNC_A); /* DATA5 */ | |
751 | portmux_set_func(PIOD, 0, FUNC_A); /* DATA6 */ | |
752 | portmux_set_func(PIOD, 1, FUNC_A); /* DATA7 */ | |
753 | portmux_set_func(PIOD, 2, FUNC_A); /* DATA8 */ | |
754 | portmux_set_func(PIOD, 3, FUNC_A); /* DATA9 */ | |
755 | portmux_set_func(PIOD, 4, FUNC_A); /* DATA10 */ | |
756 | portmux_set_func(PIOD, 5, FUNC_A); /* DATA11 */ | |
757 | portmux_set_func(PIOD, 6, FUNC_A); /* DATA12 */ | |
758 | portmux_set_func(PIOD, 7, FUNC_A); /* DATA13 */ | |
759 | portmux_set_func(PIOD, 8, FUNC_A); /* DATA14 */ | |
760 | portmux_set_func(PIOD, 9, FUNC_A); /* DATA15 */ | |
761 | portmux_set_func(PIOD, 10, FUNC_A); /* DATA16 */ | |
762 | portmux_set_func(PIOD, 11, FUNC_A); /* DATA17 */ | |
763 | portmux_set_func(PIOD, 12, FUNC_A); /* DATA18 */ | |
764 | portmux_set_func(PIOD, 13, FUNC_A); /* DATA19 */ | |
765 | portmux_set_func(PIOD, 14, FUNC_A); /* DATA20 */ | |
766 | portmux_set_func(PIOD, 15, FUNC_A); /* DATA21 */ | |
767 | portmux_set_func(PIOD, 16, FUNC_A); /* DATA22 */ | |
768 | portmux_set_func(PIOD, 17, FUNC_A); /* DATA23 */ | |
769 | ||
770 | clk_set_parent(&lcdc0_pixclk, &pll0); | |
771 | clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0)); | |
772 | break; | |
773 | ||
774 | default: | |
775 | return NULL; | |
776 | } | |
777 | ||
778 | memcpy(pdev->dev.platform_data, data, | |
779 | sizeof(struct lcdc_platform_data)); | |
780 | ||
781 | platform_device_register(pdev); | |
782 | return pdev; | |
783 | } | |
784 | ||
785 | struct clk *at32_clock_list[] = { | |
786 | &osc32k, | |
787 | &osc0, | |
788 | &osc1, | |
789 | &pll0, | |
790 | &pll1, | |
791 | &cpu_clk, | |
792 | &hsb_clk, | |
793 | &pba_clk, | |
794 | &pbb_clk, | |
795 | &at32_sm_pclk, | |
796 | &at32_intc0_pclk, | |
797 | &ebi_clk, | |
798 | &hramc_clk, | |
799 | &pdc_hclk, | |
800 | &pdc_pclk, | |
801 | &pico_clk, | |
802 | &pio0_mck, | |
803 | &pio1_mck, | |
804 | &pio2_mck, | |
805 | &pio3_mck, | |
806 | &usart0_usart, | |
807 | &usart1_usart, | |
808 | &usart2_usart, | |
809 | &usart3_usart, | |
810 | &macb0_hclk, | |
811 | &macb0_pclk, | |
812 | &spi0_mck, | |
813 | &lcdc0_hclk, | |
814 | &lcdc0_pixclk, | |
815 | }; | |
816 | unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list); | |
817 | ||
818 | void __init at32_portmux_init(void) | |
819 | { | |
820 | at32_init_pio(&pio0_device); | |
821 | at32_init_pio(&pio1_device); | |
822 | at32_init_pio(&pio2_device); | |
823 | at32_init_pio(&pio3_device); | |
824 | } | |
825 | ||
826 | void __init at32_clock_init(void) | |
827 | { | |
828 | struct at32_sm *sm = &system_manager; | |
829 | u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0; | |
830 | int i; | |
831 | ||
832 | if (sm_readl(sm, PM_MCCTRL) & SM_BIT(PLLSEL)) | |
833 | main_clock = &pll0; | |
834 | else | |
835 | main_clock = &osc0; | |
836 | ||
837 | if (sm_readl(sm, PM_PLL0) & SM_BIT(PLLOSC)) | |
838 | pll0.parent = &osc1; | |
839 | if (sm_readl(sm, PM_PLL1) & SM_BIT(PLLOSC)) | |
840 | pll1.parent = &osc1; | |
841 | ||
842 | /* | |
843 | * Turn on all clocks that have at least one user already, and | |
844 | * turn off everything else. We only do this for module | |
845 | * clocks, and even though it isn't particularly pretty to | |
846 | * check the address of the mode function, it should do the | |
847 | * trick... | |
848 | */ | |
849 | for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) { | |
850 | struct clk *clk = at32_clock_list[i]; | |
851 | ||
852 | if (clk->mode == &cpu_clk_mode) | |
853 | cpu_mask |= 1 << clk->index; | |
854 | else if (clk->mode == &hsb_clk_mode) | |
855 | hsb_mask |= 1 << clk->index; | |
856 | else if (clk->mode == &pba_clk_mode) | |
857 | pba_mask |= 1 << clk->index; | |
858 | else if (clk->mode == &pbb_clk_mode) | |
859 | pbb_mask |= 1 << clk->index; | |
860 | } | |
861 | ||
862 | sm_writel(sm, PM_CPU_MASK, cpu_mask); | |
863 | sm_writel(sm, PM_HSB_MASK, hsb_mask); | |
864 | sm_writel(sm, PM_PBA_MASK, pba_mask); | |
865 | sm_writel(sm, PM_PBB_MASK, pbb_mask); | |
866 | } |