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b6d6454f BD |
1 | /* linux/drivers/mfd/sm501.c |
2 | * | |
3 | * Copyright (C) 2006 Simtec Electronics | |
4 | * Ben Dooks <ben@simtec.co.uk> | |
5 | * Vincent Sanders <vince@simtec.co.uk> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * SM501 MFD driver | |
12 | */ | |
13 | ||
14 | #include <linux/kernel.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/list.h> | |
19 | #include <linux/device.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/pci.h> | |
f61be273 | 22 | #include <linux/gpio.h> |
42cd2366 | 23 | #include <linux/i2c-gpio.h> |
b6d6454f BD |
24 | |
25 | #include <linux/sm501.h> | |
26 | #include <linux/sm501-regs.h> | |
61711f8f | 27 | #include <linux/serial_8250.h> |
b6d6454f BD |
28 | |
29 | #include <asm/io.h> | |
30 | ||
31 | struct sm501_device { | |
32 | struct list_head list; | |
33 | struct platform_device pdev; | |
34 | }; | |
35 | ||
f61be273 BD |
36 | struct sm501_gpio; |
37 | ||
38 | struct sm501_gpio_chip { | |
39 | struct gpio_chip gpio; | |
40 | struct sm501_gpio *ourgpio; /* to get back to parent. */ | |
41 | void __iomem *regbase; | |
42 | }; | |
43 | ||
44 | struct sm501_gpio { | |
45 | struct sm501_gpio_chip low; | |
46 | struct sm501_gpio_chip high; | |
47 | spinlock_t lock; | |
48 | ||
49 | unsigned int registered : 1; | |
50 | void __iomem *regs; | |
51 | struct resource *regs_res; | |
52 | }; | |
53 | ||
b6d6454f BD |
54 | struct sm501_devdata { |
55 | spinlock_t reg_lock; | |
56 | struct mutex clock_lock; | |
57 | struct list_head devices; | |
f61be273 | 58 | struct sm501_gpio gpio; |
b6d6454f BD |
59 | |
60 | struct device *dev; | |
61 | struct resource *io_res; | |
62 | struct resource *mem_res; | |
63 | struct resource *regs_claim; | |
64 | struct sm501_platdata *platdata; | |
65 | ||
f61be273 | 66 | |
331d7475 BD |
67 | unsigned int in_suspend; |
68 | unsigned long pm_misc; | |
69 | ||
b6d6454f BD |
70 | int unit_power[20]; |
71 | unsigned int pdev_id; | |
72 | unsigned int irq; | |
73 | void __iomem *regs; | |
3149be50 | 74 | unsigned int rev; |
b6d6454f BD |
75 | }; |
76 | ||
f61be273 | 77 | |
b6d6454f BD |
78 | #define MHZ (1000 * 1000) |
79 | ||
80 | #ifdef DEBUG | |
245904a4 | 81 | static const unsigned int div_tab[] = { |
b6d6454f BD |
82 | [0] = 1, |
83 | [1] = 2, | |
84 | [2] = 4, | |
85 | [3] = 8, | |
86 | [4] = 16, | |
87 | [5] = 32, | |
88 | [6] = 64, | |
89 | [7] = 128, | |
90 | [8] = 3, | |
91 | [9] = 6, | |
92 | [10] = 12, | |
93 | [11] = 24, | |
94 | [12] = 48, | |
95 | [13] = 96, | |
96 | [14] = 192, | |
97 | [15] = 384, | |
98 | [16] = 5, | |
99 | [17] = 10, | |
100 | [18] = 20, | |
101 | [19] = 40, | |
102 | [20] = 80, | |
103 | [21] = 160, | |
104 | [22] = 320, | |
105 | [23] = 604, | |
106 | }; | |
107 | ||
108 | static unsigned long decode_div(unsigned long pll2, unsigned long val, | |
109 | unsigned int lshft, unsigned int selbit, | |
245904a4 | 110 | unsigned long mask) |
b6d6454f BD |
111 | { |
112 | if (val & selbit) | |
113 | pll2 = 288 * MHZ; | |
114 | ||
245904a4 | 115 | return pll2 / div_tab[(val >> lshft) & mask]; |
b6d6454f BD |
116 | } |
117 | ||
118 | #define fmt_freq(x) ((x) / MHZ), ((x) % MHZ), (x) | |
119 | ||
120 | /* sm501_dump_clk | |
121 | * | |
122 | * Print out the current clock configuration for the device | |
123 | */ | |
124 | ||
125 | static void sm501_dump_clk(struct sm501_devdata *sm) | |
126 | { | |
127 | unsigned long misct = readl(sm->regs + SM501_MISC_TIMING); | |
128 | unsigned long pm0 = readl(sm->regs + SM501_POWER_MODE_0_CLOCK); | |
129 | unsigned long pm1 = readl(sm->regs + SM501_POWER_MODE_1_CLOCK); | |
130 | unsigned long pmc = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
131 | unsigned long sdclk0, sdclk1; | |
132 | unsigned long pll2 = 0; | |
133 | ||
134 | switch (misct & 0x30) { | |
135 | case 0x00: | |
136 | pll2 = 336 * MHZ; | |
137 | break; | |
138 | case 0x10: | |
139 | pll2 = 288 * MHZ; | |
140 | break; | |
141 | case 0x20: | |
142 | pll2 = 240 * MHZ; | |
143 | break; | |
144 | case 0x30: | |
145 | pll2 = 192 * MHZ; | |
146 | break; | |
147 | } | |
148 | ||
149 | sdclk0 = (misct & (1<<12)) ? pll2 : 288 * MHZ; | |
245904a4 | 150 | sdclk0 /= div_tab[((misct >> 8) & 0xf)]; |
b6d6454f BD |
151 | |
152 | sdclk1 = (misct & (1<<20)) ? pll2 : 288 * MHZ; | |
245904a4 | 153 | sdclk1 /= div_tab[((misct >> 16) & 0xf)]; |
b6d6454f BD |
154 | |
155 | dev_dbg(sm->dev, "MISCT=%08lx, PM0=%08lx, PM1=%08lx\n", | |
156 | misct, pm0, pm1); | |
157 | ||
158 | dev_dbg(sm->dev, "PLL2 = %ld.%ld MHz (%ld), SDCLK0=%08lx, SDCLK1=%08lx\n", | |
159 | fmt_freq(pll2), sdclk0, sdclk1); | |
160 | ||
161 | dev_dbg(sm->dev, "SDRAM: PM0=%ld, PM1=%ld\n", sdclk0, sdclk1); | |
162 | ||
163 | dev_dbg(sm->dev, "PM0[%c]: " | |
164 | "P2 %ld.%ld MHz (%ld), V2 %ld.%ld (%ld), " | |
48986f06 | 165 | "M %ld.%ld (%ld), MX1 %ld.%ld (%ld)\n", |
b6d6454f | 166 | (pmc & 3 ) == 0 ? '*' : '-', |
245904a4 VS |
167 | fmt_freq(decode_div(pll2, pm0, 24, 1<<29, 31)), |
168 | fmt_freq(decode_div(pll2, pm0, 16, 1<<20, 15)), | |
169 | fmt_freq(decode_div(pll2, pm0, 8, 1<<12, 15)), | |
170 | fmt_freq(decode_div(pll2, pm0, 0, 1<<4, 15))); | |
b6d6454f BD |
171 | |
172 | dev_dbg(sm->dev, "PM1[%c]: " | |
173 | "P2 %ld.%ld MHz (%ld), V2 %ld.%ld (%ld), " | |
174 | "M %ld.%ld (%ld), MX1 %ld.%ld (%ld)\n", | |
175 | (pmc & 3 ) == 1 ? '*' : '-', | |
245904a4 VS |
176 | fmt_freq(decode_div(pll2, pm1, 24, 1<<29, 31)), |
177 | fmt_freq(decode_div(pll2, pm1, 16, 1<<20, 15)), | |
178 | fmt_freq(decode_div(pll2, pm1, 8, 1<<12, 15)), | |
179 | fmt_freq(decode_div(pll2, pm1, 0, 1<<4, 15))); | |
b6d6454f | 180 | } |
331d7475 BD |
181 | |
182 | static void sm501_dump_regs(struct sm501_devdata *sm) | |
183 | { | |
184 | void __iomem *regs = sm->regs; | |
185 | ||
186 | dev_info(sm->dev, "System Control %08x\n", | |
187 | readl(regs + SM501_SYSTEM_CONTROL)); | |
188 | dev_info(sm->dev, "Misc Control %08x\n", | |
189 | readl(regs + SM501_MISC_CONTROL)); | |
190 | dev_info(sm->dev, "GPIO Control Low %08x\n", | |
191 | readl(regs + SM501_GPIO31_0_CONTROL)); | |
192 | dev_info(sm->dev, "GPIO Control Hi %08x\n", | |
193 | readl(regs + SM501_GPIO63_32_CONTROL)); | |
194 | dev_info(sm->dev, "DRAM Control %08x\n", | |
195 | readl(regs + SM501_DRAM_CONTROL)); | |
196 | dev_info(sm->dev, "Arbitration Ctrl %08x\n", | |
197 | readl(regs + SM501_ARBTRTN_CONTROL)); | |
198 | dev_info(sm->dev, "Misc Timing %08x\n", | |
199 | readl(regs + SM501_MISC_TIMING)); | |
200 | } | |
201 | ||
202 | static void sm501_dump_gate(struct sm501_devdata *sm) | |
b6d6454f | 203 | { |
331d7475 BD |
204 | dev_info(sm->dev, "CurrentGate %08x\n", |
205 | readl(sm->regs + SM501_CURRENT_GATE)); | |
206 | dev_info(sm->dev, "CurrentClock %08x\n", | |
207 | readl(sm->regs + SM501_CURRENT_CLOCK)); | |
208 | dev_info(sm->dev, "PowerModeControl %08x\n", | |
209 | readl(sm->regs + SM501_POWER_MODE_CONTROL)); | |
b6d6454f | 210 | } |
331d7475 BD |
211 | |
212 | #else | |
213 | static inline void sm501_dump_gate(struct sm501_devdata *sm) { } | |
214 | static inline void sm501_dump_regs(struct sm501_devdata *sm) { } | |
215 | static inline void sm501_dump_clk(struct sm501_devdata *sm) { } | |
b6d6454f BD |
216 | #endif |
217 | ||
218 | /* sm501_sync_regs | |
219 | * | |
220 | * ensure the | |
221 | */ | |
222 | ||
223 | static void sm501_sync_regs(struct sm501_devdata *sm) | |
224 | { | |
225 | readl(sm->regs); | |
226 | } | |
227 | ||
331d7475 BD |
228 | static inline void sm501_mdelay(struct sm501_devdata *sm, unsigned int delay) |
229 | { | |
230 | /* during suspend/resume, we are currently not allowed to sleep, | |
231 | * so change to using mdelay() instead of msleep() if we | |
232 | * are in one of these paths */ | |
233 | ||
234 | if (sm->in_suspend) | |
235 | mdelay(delay); | |
236 | else | |
237 | msleep(delay); | |
238 | } | |
239 | ||
b6d6454f BD |
240 | /* sm501_misc_control |
241 | * | |
331d7475 | 242 | * alters the miscellaneous control parameters |
b6d6454f BD |
243 | */ |
244 | ||
245 | int sm501_misc_control(struct device *dev, | |
246 | unsigned long set, unsigned long clear) | |
247 | { | |
248 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
249 | unsigned long misc; | |
250 | unsigned long save; | |
251 | unsigned long to; | |
252 | ||
253 | spin_lock_irqsave(&sm->reg_lock, save); | |
254 | ||
255 | misc = readl(sm->regs + SM501_MISC_CONTROL); | |
256 | to = (misc & ~clear) | set; | |
257 | ||
258 | if (to != misc) { | |
259 | writel(to, sm->regs + SM501_MISC_CONTROL); | |
260 | sm501_sync_regs(sm); | |
261 | ||
262 | dev_dbg(sm->dev, "MISC_CONTROL %08lx\n", misc); | |
263 | } | |
264 | ||
265 | spin_unlock_irqrestore(&sm->reg_lock, save); | |
266 | return to; | |
267 | } | |
268 | ||
269 | EXPORT_SYMBOL_GPL(sm501_misc_control); | |
270 | ||
271 | /* sm501_modify_reg | |
272 | * | |
273 | * Modify a register in the SM501 which may be shared with other | |
274 | * drivers. | |
275 | */ | |
276 | ||
277 | unsigned long sm501_modify_reg(struct device *dev, | |
278 | unsigned long reg, | |
279 | unsigned long set, | |
280 | unsigned long clear) | |
281 | { | |
282 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
283 | unsigned long data; | |
284 | unsigned long save; | |
285 | ||
286 | spin_lock_irqsave(&sm->reg_lock, save); | |
287 | ||
288 | data = readl(sm->regs + reg); | |
289 | data |= set; | |
290 | data &= ~clear; | |
291 | ||
292 | writel(data, sm->regs + reg); | |
293 | sm501_sync_regs(sm); | |
294 | ||
295 | spin_unlock_irqrestore(&sm->reg_lock, save); | |
296 | ||
297 | return data; | |
298 | } | |
299 | ||
300 | EXPORT_SYMBOL_GPL(sm501_modify_reg); | |
301 | ||
b6d6454f BD |
302 | /* sm501_unit_power |
303 | * | |
304 | * alters the power active gate to set specific units on or off | |
305 | */ | |
306 | ||
307 | int sm501_unit_power(struct device *dev, unsigned int unit, unsigned int to) | |
308 | { | |
309 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
310 | unsigned long mode; | |
311 | unsigned long gate; | |
312 | unsigned long clock; | |
313 | ||
314 | mutex_lock(&sm->clock_lock); | |
315 | ||
316 | mode = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
317 | gate = readl(sm->regs + SM501_CURRENT_GATE); | |
318 | clock = readl(sm->regs + SM501_CURRENT_CLOCK); | |
319 | ||
320 | mode &= 3; /* get current power mode */ | |
321 | ||
bf703c3f | 322 | if (unit >= ARRAY_SIZE(sm->unit_power)) { |
145980a0 | 323 | dev_err(dev, "%s: bad unit %d\n", __func__, unit); |
b6d6454f BD |
324 | goto already; |
325 | } | |
326 | ||
145980a0 | 327 | dev_dbg(sm->dev, "%s: unit %d, cur %d, to %d\n", __func__, unit, |
b6d6454f BD |
328 | sm->unit_power[unit], to); |
329 | ||
330 | if (to == 0 && sm->unit_power[unit] == 0) { | |
331 | dev_err(sm->dev, "unit %d is already shutdown\n", unit); | |
332 | goto already; | |
333 | } | |
334 | ||
335 | sm->unit_power[unit] += to ? 1 : -1; | |
336 | to = sm->unit_power[unit] ? 1 : 0; | |
337 | ||
338 | if (to) { | |
339 | if (gate & (1 << unit)) | |
340 | goto already; | |
341 | gate |= (1 << unit); | |
342 | } else { | |
343 | if (!(gate & (1 << unit))) | |
344 | goto already; | |
345 | gate &= ~(1 << unit); | |
346 | } | |
347 | ||
348 | switch (mode) { | |
349 | case 1: | |
350 | writel(gate, sm->regs + SM501_POWER_MODE_0_GATE); | |
351 | writel(clock, sm->regs + SM501_POWER_MODE_0_CLOCK); | |
352 | mode = 0; | |
353 | break; | |
354 | case 2: | |
355 | case 0: | |
356 | writel(gate, sm->regs + SM501_POWER_MODE_1_GATE); | |
357 | writel(clock, sm->regs + SM501_POWER_MODE_1_CLOCK); | |
358 | mode = 1; | |
359 | break; | |
360 | ||
361 | default: | |
362 | return -1; | |
363 | } | |
364 | ||
365 | writel(mode, sm->regs + SM501_POWER_MODE_CONTROL); | |
366 | sm501_sync_regs(sm); | |
367 | ||
368 | dev_dbg(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n", | |
369 | gate, clock, mode); | |
370 | ||
331d7475 | 371 | sm501_mdelay(sm, 16); |
b6d6454f BD |
372 | |
373 | already: | |
374 | mutex_unlock(&sm->clock_lock); | |
375 | return gate; | |
376 | } | |
377 | ||
378 | EXPORT_SYMBOL_GPL(sm501_unit_power); | |
379 | ||
380 | ||
381 | /* Perform a rounded division. */ | |
382 | static long sm501fb_round_div(long num, long denom) | |
383 | { | |
384 | /* n / d + 1 / 2 = (2n + d) / 2d */ | |
385 | return (2 * num + denom) / (2 * denom); | |
386 | } | |
387 | ||
388 | /* clock value structure. */ | |
389 | struct sm501_clock { | |
390 | unsigned long mclk; | |
391 | int divider; | |
392 | int shift; | |
3149be50 | 393 | unsigned int m, n, k; |
b6d6454f BD |
394 | }; |
395 | ||
3149be50 VS |
396 | /* sm501_calc_clock |
397 | * | |
398 | * Calculates the nearest discrete clock frequency that | |
399 | * can be achieved with the specified input clock. | |
400 | * the maximum divisor is 3 or 5 | |
401 | */ | |
402 | ||
403 | static int sm501_calc_clock(unsigned long freq, | |
404 | struct sm501_clock *clock, | |
405 | int max_div, | |
406 | unsigned long mclk, | |
407 | long *best_diff) | |
408 | { | |
409 | int ret = 0; | |
410 | int divider; | |
411 | int shift; | |
412 | long diff; | |
413 | ||
414 | /* try dividers 1 and 3 for CRT and for panel, | |
415 | try divider 5 for panel only.*/ | |
416 | ||
417 | for (divider = 1; divider <= max_div; divider += 2) { | |
418 | /* try all 8 shift values.*/ | |
419 | for (shift = 0; shift < 8; shift++) { | |
420 | /* Calculate difference to requested clock */ | |
421 | diff = sm501fb_round_div(mclk, divider << shift) - freq; | |
422 | if (diff < 0) | |
423 | diff = -diff; | |
424 | ||
425 | /* If it is less than the current, use it */ | |
426 | if (diff < *best_diff) { | |
427 | *best_diff = diff; | |
428 | ||
429 | clock->mclk = mclk; | |
430 | clock->divider = divider; | |
431 | clock->shift = shift; | |
432 | ret = 1; | |
433 | } | |
434 | } | |
435 | } | |
436 | ||
437 | return ret; | |
438 | } | |
439 | ||
440 | /* sm501_calc_pll | |
441 | * | |
442 | * Calculates the nearest discrete clock frequency that can be | |
443 | * achieved using the programmable PLL. | |
444 | * the maximum divisor is 3 or 5 | |
445 | */ | |
446 | ||
447 | static unsigned long sm501_calc_pll(unsigned long freq, | |
448 | struct sm501_clock *clock, | |
449 | int max_div) | |
450 | { | |
451 | unsigned long mclk; | |
452 | unsigned int m, n, k; | |
453 | long best_diff = 999999999; | |
454 | ||
455 | /* | |
456 | * The SM502 datasheet doesn't specify the min/max values for M and N. | |
457 | * N = 1 at least doesn't work in practice. | |
458 | */ | |
459 | for (m = 2; m <= 255; m++) { | |
460 | for (n = 2; n <= 127; n++) { | |
461 | for (k = 0; k <= 1; k++) { | |
462 | mclk = (24000000UL * m / n) >> k; | |
463 | ||
464 | if (sm501_calc_clock(freq, clock, max_div, | |
465 | mclk, &best_diff)) { | |
466 | clock->m = m; | |
467 | clock->n = n; | |
468 | clock->k = k; | |
469 | } | |
470 | } | |
471 | } | |
472 | } | |
473 | ||
474 | /* Return best clock. */ | |
475 | return clock->mclk / (clock->divider << clock->shift); | |
476 | } | |
477 | ||
b6d6454f BD |
478 | /* sm501_select_clock |
479 | * | |
3149be50 VS |
480 | * Calculates the nearest discrete clock frequency that can be |
481 | * achieved using the 288MHz and 336MHz PLLs. | |
b6d6454f BD |
482 | * the maximum divisor is 3 or 5 |
483 | */ | |
3149be50 | 484 | |
b6d6454f BD |
485 | static unsigned long sm501_select_clock(unsigned long freq, |
486 | struct sm501_clock *clock, | |
487 | int max_div) | |
488 | { | |
489 | unsigned long mclk; | |
b6d6454f BD |
490 | long best_diff = 999999999; |
491 | ||
492 | /* Try 288MHz and 336MHz clocks. */ | |
493 | for (mclk = 288000000; mclk <= 336000000; mclk += 48000000) { | |
3149be50 | 494 | sm501_calc_clock(freq, clock, max_div, mclk, &best_diff); |
b6d6454f BD |
495 | } |
496 | ||
497 | /* Return best clock. */ | |
498 | return clock->mclk / (clock->divider << clock->shift); | |
499 | } | |
500 | ||
501 | /* sm501_set_clock | |
502 | * | |
503 | * set one of the four clock sources to the closest available frequency to | |
504 | * the one specified | |
505 | */ | |
506 | ||
507 | unsigned long sm501_set_clock(struct device *dev, | |
508 | int clksrc, | |
509 | unsigned long req_freq) | |
510 | { | |
511 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
512 | unsigned long mode = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
513 | unsigned long gate = readl(sm->regs + SM501_CURRENT_GATE); | |
514 | unsigned long clock = readl(sm->regs + SM501_CURRENT_CLOCK); | |
515 | unsigned char reg; | |
3149be50 | 516 | unsigned int pll_reg = 0; |
b6d6454f BD |
517 | unsigned long sm501_freq; /* the actual frequency acheived */ |
518 | ||
519 | struct sm501_clock to; | |
520 | ||
521 | /* find achivable discrete frequency and setup register value | |
522 | * accordingly, V2XCLK, MCLK and M1XCLK are the same P2XCLK | |
523 | * has an extra bit for the divider */ | |
524 | ||
525 | switch (clksrc) { | |
526 | case SM501_CLOCK_P2XCLK: | |
527 | /* This clock is divided in half so to achive the | |
528 | * requested frequency the value must be multiplied by | |
529 | * 2. This clock also has an additional pre divisor */ | |
530 | ||
3149be50 VS |
531 | if (sm->rev >= 0xC0) { |
532 | /* SM502 -> use the programmable PLL */ | |
533 | sm501_freq = (sm501_calc_pll(2 * req_freq, | |
534 | &to, 5) / 2); | |
535 | reg = to.shift & 0x07;/* bottom 3 bits are shift */ | |
536 | if (to.divider == 3) | |
537 | reg |= 0x08; /* /3 divider required */ | |
538 | else if (to.divider == 5) | |
539 | reg |= 0x10; /* /5 divider required */ | |
540 | reg |= 0x40; /* select the programmable PLL */ | |
541 | pll_reg = 0x20000 | (to.k << 15) | (to.n << 8) | to.m; | |
542 | } else { | |
543 | sm501_freq = (sm501_select_clock(2 * req_freq, | |
544 | &to, 5) / 2); | |
545 | reg = to.shift & 0x07;/* bottom 3 bits are shift */ | |
546 | if (to.divider == 3) | |
547 | reg |= 0x08; /* /3 divider required */ | |
548 | else if (to.divider == 5) | |
549 | reg |= 0x10; /* /5 divider required */ | |
550 | if (to.mclk != 288000000) | |
551 | reg |= 0x20; /* which mclk pll is source */ | |
552 | } | |
b6d6454f BD |
553 | break; |
554 | ||
555 | case SM501_CLOCK_V2XCLK: | |
556 | /* This clock is divided in half so to achive the | |
557 | * requested frequency the value must be multiplied by 2. */ | |
558 | ||
559 | sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2); | |
560 | reg=to.shift & 0x07; /* bottom 3 bits are shift */ | |
561 | if (to.divider == 3) | |
562 | reg |= 0x08; /* /3 divider required */ | |
563 | if (to.mclk != 288000000) | |
564 | reg |= 0x10; /* which mclk pll is source */ | |
565 | break; | |
566 | ||
567 | case SM501_CLOCK_MCLK: | |
568 | case SM501_CLOCK_M1XCLK: | |
569 | /* These clocks are the same and not further divided */ | |
570 | ||
571 | sm501_freq = sm501_select_clock( req_freq, &to, 3); | |
572 | reg=to.shift & 0x07; /* bottom 3 bits are shift */ | |
573 | if (to.divider == 3) | |
574 | reg |= 0x08; /* /3 divider required */ | |
575 | if (to.mclk != 288000000) | |
576 | reg |= 0x10; /* which mclk pll is source */ | |
577 | break; | |
578 | ||
579 | default: | |
580 | return 0; /* this is bad */ | |
581 | } | |
582 | ||
583 | mutex_lock(&sm->clock_lock); | |
584 | ||
585 | mode = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
586 | gate = readl(sm->regs + SM501_CURRENT_GATE); | |
587 | clock = readl(sm->regs + SM501_CURRENT_CLOCK); | |
588 | ||
589 | clock = clock & ~(0xFF << clksrc); | |
590 | clock |= reg<<clksrc; | |
591 | ||
592 | mode &= 3; /* find current mode */ | |
593 | ||
594 | switch (mode) { | |
595 | case 1: | |
596 | writel(gate, sm->regs + SM501_POWER_MODE_0_GATE); | |
597 | writel(clock, sm->regs + SM501_POWER_MODE_0_CLOCK); | |
598 | mode = 0; | |
599 | break; | |
600 | case 2: | |
601 | case 0: | |
602 | writel(gate, sm->regs + SM501_POWER_MODE_1_GATE); | |
603 | writel(clock, sm->regs + SM501_POWER_MODE_1_CLOCK); | |
604 | mode = 1; | |
605 | break; | |
606 | ||
607 | default: | |
608 | mutex_unlock(&sm->clock_lock); | |
609 | return -1; | |
610 | } | |
611 | ||
612 | writel(mode, sm->regs + SM501_POWER_MODE_CONTROL); | |
3149be50 VS |
613 | |
614 | if (pll_reg) | |
615 | writel(pll_reg, sm->regs + SM501_PROGRAMMABLE_PLL_CONTROL); | |
616 | ||
b6d6454f BD |
617 | sm501_sync_regs(sm); |
618 | ||
619 | dev_info(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n", | |
620 | gate, clock, mode); | |
621 | ||
331d7475 | 622 | sm501_mdelay(sm, 16); |
b6d6454f BD |
623 | mutex_unlock(&sm->clock_lock); |
624 | ||
625 | sm501_dump_clk(sm); | |
626 | ||
627 | return sm501_freq; | |
628 | } | |
629 | ||
630 | EXPORT_SYMBOL_GPL(sm501_set_clock); | |
631 | ||
632 | /* sm501_find_clock | |
633 | * | |
634 | * finds the closest available frequency for a given clock | |
635 | */ | |
636 | ||
3149be50 VS |
637 | unsigned long sm501_find_clock(struct device *dev, |
638 | int clksrc, | |
b6d6454f BD |
639 | unsigned long req_freq) |
640 | { | |
3149be50 | 641 | struct sm501_devdata *sm = dev_get_drvdata(dev); |
b6d6454f BD |
642 | unsigned long sm501_freq; /* the frequency achiveable by the 501 */ |
643 | struct sm501_clock to; | |
644 | ||
645 | switch (clksrc) { | |
646 | case SM501_CLOCK_P2XCLK: | |
3149be50 VS |
647 | if (sm->rev >= 0xC0) { |
648 | /* SM502 -> use the programmable PLL */ | |
649 | sm501_freq = (sm501_calc_pll(2 * req_freq, | |
650 | &to, 5) / 2); | |
651 | } else { | |
652 | sm501_freq = (sm501_select_clock(2 * req_freq, | |
653 | &to, 5) / 2); | |
654 | } | |
b6d6454f BD |
655 | break; |
656 | ||
657 | case SM501_CLOCK_V2XCLK: | |
658 | sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2); | |
659 | break; | |
660 | ||
661 | case SM501_CLOCK_MCLK: | |
662 | case SM501_CLOCK_M1XCLK: | |
663 | sm501_freq = sm501_select_clock(req_freq, &to, 3); | |
664 | break; | |
665 | ||
666 | default: | |
667 | sm501_freq = 0; /* error */ | |
668 | } | |
669 | ||
670 | return sm501_freq; | |
671 | } | |
672 | ||
673 | EXPORT_SYMBOL_GPL(sm501_find_clock); | |
674 | ||
675 | static struct sm501_device *to_sm_device(struct platform_device *pdev) | |
676 | { | |
677 | return container_of(pdev, struct sm501_device, pdev); | |
678 | } | |
679 | ||
680 | /* sm501_device_release | |
681 | * | |
682 | * A release function for the platform devices we create to allow us to | |
683 | * free any items we allocated | |
684 | */ | |
685 | ||
686 | static void sm501_device_release(struct device *dev) | |
687 | { | |
688 | kfree(to_sm_device(to_platform_device(dev))); | |
689 | } | |
690 | ||
691 | /* sm501_create_subdev | |
692 | * | |
693 | * Create a skeleton platform device with resources for passing to a | |
694 | * sub-driver | |
695 | */ | |
696 | ||
697 | static struct platform_device * | |
61711f8f MD |
698 | sm501_create_subdev(struct sm501_devdata *sm, char *name, |
699 | unsigned int res_count, unsigned int platform_data_size) | |
b6d6454f BD |
700 | { |
701 | struct sm501_device *smdev; | |
702 | ||
703 | smdev = kzalloc(sizeof(struct sm501_device) + | |
61711f8f MD |
704 | (sizeof(struct resource) * res_count) + |
705 | platform_data_size, GFP_KERNEL); | |
b6d6454f BD |
706 | if (!smdev) |
707 | return NULL; | |
708 | ||
709 | smdev->pdev.dev.release = sm501_device_release; | |
710 | ||
711 | smdev->pdev.name = name; | |
712 | smdev->pdev.id = sm->pdev_id; | |
b6d6454f BD |
713 | smdev->pdev.dev.parent = sm->dev; |
714 | ||
61711f8f MD |
715 | if (res_count) { |
716 | smdev->pdev.resource = (struct resource *)(smdev+1); | |
717 | smdev->pdev.num_resources = res_count; | |
718 | } | |
719 | if (platform_data_size) | |
720 | smdev->pdev.dev.platform_data = (void *)(smdev+1); | |
721 | ||
b6d6454f BD |
722 | return &smdev->pdev; |
723 | } | |
724 | ||
725 | /* sm501_register_device | |
726 | * | |
727 | * Register a platform device created with sm501_create_subdev() | |
728 | */ | |
729 | ||
730 | static int sm501_register_device(struct sm501_devdata *sm, | |
731 | struct platform_device *pdev) | |
732 | { | |
733 | struct sm501_device *smdev = to_sm_device(pdev); | |
734 | int ptr; | |
735 | int ret; | |
736 | ||
737 | for (ptr = 0; ptr < pdev->num_resources; ptr++) { | |
738 | printk("%s[%d] flags %08lx: %08llx..%08llx\n", | |
739 | pdev->name, ptr, | |
740 | pdev->resource[ptr].flags, | |
741 | (unsigned long long)pdev->resource[ptr].start, | |
742 | (unsigned long long)pdev->resource[ptr].end); | |
743 | } | |
744 | ||
745 | ret = platform_device_register(pdev); | |
746 | ||
747 | if (ret >= 0) { | |
748 | dev_dbg(sm->dev, "registered %s\n", pdev->name); | |
749 | list_add_tail(&smdev->list, &sm->devices); | |
750 | } else | |
751 | dev_err(sm->dev, "error registering %s (%d)\n", | |
752 | pdev->name, ret); | |
753 | ||
754 | return ret; | |
755 | } | |
756 | ||
757 | /* sm501_create_subio | |
758 | * | |
759 | * Fill in an IO resource for a sub device | |
760 | */ | |
761 | ||
762 | static void sm501_create_subio(struct sm501_devdata *sm, | |
763 | struct resource *res, | |
764 | resource_size_t offs, | |
765 | resource_size_t size) | |
766 | { | |
767 | res->flags = IORESOURCE_MEM; | |
768 | res->parent = sm->io_res; | |
769 | res->start = sm->io_res->start + offs; | |
770 | res->end = res->start + size - 1; | |
771 | } | |
772 | ||
773 | /* sm501_create_mem | |
774 | * | |
775 | * Fill in an MEM resource for a sub device | |
776 | */ | |
777 | ||
778 | static void sm501_create_mem(struct sm501_devdata *sm, | |
779 | struct resource *res, | |
780 | resource_size_t *offs, | |
781 | resource_size_t size) | |
782 | { | |
783 | *offs -= size; /* adjust memory size */ | |
784 | ||
785 | res->flags = IORESOURCE_MEM; | |
786 | res->parent = sm->mem_res; | |
787 | res->start = sm->mem_res->start + *offs; | |
788 | res->end = res->start + size - 1; | |
789 | } | |
790 | ||
791 | /* sm501_create_irq | |
792 | * | |
793 | * Fill in an IRQ resource for a sub device | |
794 | */ | |
795 | ||
796 | static void sm501_create_irq(struct sm501_devdata *sm, | |
797 | struct resource *res) | |
798 | { | |
799 | res->flags = IORESOURCE_IRQ; | |
800 | res->parent = NULL; | |
801 | res->start = res->end = sm->irq; | |
802 | } | |
803 | ||
804 | static int sm501_register_usbhost(struct sm501_devdata *sm, | |
805 | resource_size_t *mem_avail) | |
806 | { | |
807 | struct platform_device *pdev; | |
808 | ||
61711f8f | 809 | pdev = sm501_create_subdev(sm, "sm501-usb", 3, 0); |
b6d6454f BD |
810 | if (!pdev) |
811 | return -ENOMEM; | |
812 | ||
813 | sm501_create_subio(sm, &pdev->resource[0], 0x40000, 0x20000); | |
814 | sm501_create_mem(sm, &pdev->resource[1], mem_avail, 256*1024); | |
815 | sm501_create_irq(sm, &pdev->resource[2]); | |
816 | ||
817 | return sm501_register_device(sm, pdev); | |
818 | } | |
819 | ||
61711f8f MD |
820 | static void sm501_setup_uart_data(struct sm501_devdata *sm, |
821 | struct plat_serial8250_port *uart_data, | |
822 | unsigned int offset) | |
823 | { | |
824 | uart_data->membase = sm->regs + offset; | |
825 | uart_data->mapbase = sm->io_res->start + offset; | |
826 | uart_data->iotype = UPIO_MEM; | |
827 | uart_data->irq = sm->irq; | |
828 | uart_data->flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ; | |
829 | uart_data->regshift = 2; | |
830 | uart_data->uartclk = (9600 * 16); | |
831 | } | |
832 | ||
833 | static int sm501_register_uart(struct sm501_devdata *sm, int devices) | |
834 | { | |
835 | struct platform_device *pdev; | |
836 | struct plat_serial8250_port *uart_data; | |
837 | ||
838 | pdev = sm501_create_subdev(sm, "serial8250", 0, | |
839 | sizeof(struct plat_serial8250_port) * 3); | |
840 | if (!pdev) | |
841 | return -ENOMEM; | |
842 | ||
843 | uart_data = pdev->dev.platform_data; | |
844 | ||
845 | if (devices & SM501_USE_UART0) { | |
846 | sm501_setup_uart_data(sm, uart_data++, 0x30000); | |
847 | sm501_unit_power(sm->dev, SM501_GATE_UART0, 1); | |
848 | sm501_modify_reg(sm->dev, SM501_IRQ_MASK, 1 << 12, 0); | |
849 | sm501_modify_reg(sm->dev, SM501_GPIO63_32_CONTROL, 0x01e0, 0); | |
850 | } | |
851 | if (devices & SM501_USE_UART1) { | |
852 | sm501_setup_uart_data(sm, uart_data++, 0x30020); | |
853 | sm501_unit_power(sm->dev, SM501_GATE_UART1, 1); | |
854 | sm501_modify_reg(sm->dev, SM501_IRQ_MASK, 1 << 13, 0); | |
855 | sm501_modify_reg(sm->dev, SM501_GPIO63_32_CONTROL, 0x1e00, 0); | |
856 | } | |
857 | ||
858 | pdev->id = PLAT8250_DEV_SM501; | |
859 | ||
860 | return sm501_register_device(sm, pdev); | |
861 | } | |
862 | ||
b6d6454f BD |
863 | static int sm501_register_display(struct sm501_devdata *sm, |
864 | resource_size_t *mem_avail) | |
865 | { | |
866 | struct platform_device *pdev; | |
867 | ||
61711f8f | 868 | pdev = sm501_create_subdev(sm, "sm501-fb", 4, 0); |
b6d6454f BD |
869 | if (!pdev) |
870 | return -ENOMEM; | |
871 | ||
872 | sm501_create_subio(sm, &pdev->resource[0], 0x80000, 0x10000); | |
873 | sm501_create_subio(sm, &pdev->resource[1], 0x100000, 0x50000); | |
874 | sm501_create_mem(sm, &pdev->resource[2], mem_avail, *mem_avail); | |
875 | sm501_create_irq(sm, &pdev->resource[3]); | |
876 | ||
877 | return sm501_register_device(sm, pdev); | |
878 | } | |
879 | ||
f61be273 BD |
880 | #ifdef CONFIG_MFD_SM501_GPIO |
881 | ||
882 | static inline struct sm501_gpio_chip *to_sm501_gpio(struct gpio_chip *gc) | |
883 | { | |
884 | return container_of(gc, struct sm501_gpio_chip, gpio); | |
885 | } | |
886 | ||
887 | static inline struct sm501_devdata *sm501_gpio_to_dev(struct sm501_gpio *gpio) | |
888 | { | |
889 | return container_of(gpio, struct sm501_devdata, gpio); | |
890 | } | |
891 | ||
892 | static int sm501_gpio_get(struct gpio_chip *chip, unsigned offset) | |
893 | ||
894 | { | |
895 | struct sm501_gpio_chip *smgpio = to_sm501_gpio(chip); | |
896 | unsigned long result; | |
897 | ||
898 | result = readl(smgpio->regbase + SM501_GPIO_DATA_LOW); | |
899 | result >>= offset; | |
900 | ||
901 | return result & 1UL; | |
902 | } | |
903 | ||
904 | static void sm501_gpio_set(struct gpio_chip *chip, unsigned offset, int value) | |
905 | ||
906 | { | |
907 | struct sm501_gpio_chip *smchip = to_sm501_gpio(chip); | |
908 | struct sm501_gpio *smgpio = smchip->ourgpio; | |
909 | unsigned long bit = 1 << offset; | |
910 | void __iomem *regs = smchip->regbase; | |
911 | unsigned long save; | |
912 | unsigned long val; | |
913 | ||
914 | dev_dbg(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d)\n", | |
915 | __func__, chip, offset); | |
916 | ||
917 | spin_lock_irqsave(&smgpio->lock, save); | |
918 | ||
919 | val = readl(regs + SM501_GPIO_DATA_LOW) & ~bit; | |
920 | if (value) | |
921 | val |= bit; | |
922 | writel(val, regs); | |
923 | ||
924 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
925 | spin_unlock_irqrestore(&smgpio->lock, save); | |
926 | } | |
927 | ||
928 | static int sm501_gpio_input(struct gpio_chip *chip, unsigned offset) | |
929 | { | |
930 | struct sm501_gpio_chip *smchip = to_sm501_gpio(chip); | |
931 | struct sm501_gpio *smgpio = smchip->ourgpio; | |
932 | void __iomem *regs = smchip->regbase; | |
933 | unsigned long bit = 1 << offset; | |
934 | unsigned long save; | |
935 | unsigned long ddr; | |
936 | ||
937 | dev_info(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d)\n", | |
938 | __func__, chip, offset); | |
939 | ||
940 | spin_lock_irqsave(&smgpio->lock, save); | |
941 | ||
942 | ddr = readl(regs + SM501_GPIO_DDR_LOW); | |
943 | writel(ddr & ~bit, regs + SM501_GPIO_DDR_LOW); | |
944 | ||
945 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
946 | spin_unlock_irqrestore(&smgpio->lock, save); | |
947 | ||
948 | return 0; | |
949 | } | |
950 | ||
951 | static int sm501_gpio_output(struct gpio_chip *chip, | |
952 | unsigned offset, int value) | |
953 | { | |
954 | struct sm501_gpio_chip *smchip = to_sm501_gpio(chip); | |
955 | struct sm501_gpio *smgpio = smchip->ourgpio; | |
956 | unsigned long bit = 1 << offset; | |
957 | void __iomem *regs = smchip->regbase; | |
958 | unsigned long save; | |
959 | unsigned long val; | |
960 | unsigned long ddr; | |
961 | ||
962 | dev_dbg(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d,%d)\n", | |
963 | __func__, chip, offset, value); | |
964 | ||
965 | spin_lock_irqsave(&smgpio->lock, save); | |
966 | ||
967 | val = readl(regs + SM501_GPIO_DATA_LOW); | |
968 | if (value) | |
969 | val |= bit; | |
970 | else | |
971 | val &= ~bit; | |
972 | writel(val, regs); | |
973 | ||
974 | ddr = readl(regs + SM501_GPIO_DDR_LOW); | |
975 | writel(ddr | bit, regs + SM501_GPIO_DDR_LOW); | |
976 | ||
977 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
978 | writel(val, regs + SM501_GPIO_DATA_LOW); | |
979 | ||
980 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
981 | spin_unlock_irqrestore(&smgpio->lock, save); | |
982 | ||
983 | return 0; | |
984 | } | |
985 | ||
986 | static struct gpio_chip gpio_chip_template = { | |
987 | .ngpio = 32, | |
988 | .direction_input = sm501_gpio_input, | |
989 | .direction_output = sm501_gpio_output, | |
990 | .set = sm501_gpio_set, | |
991 | .get = sm501_gpio_get, | |
992 | }; | |
993 | ||
994 | static int __devinit sm501_gpio_register_chip(struct sm501_devdata *sm, | |
995 | struct sm501_gpio *gpio, | |
996 | struct sm501_gpio_chip *chip) | |
997 | { | |
998 | struct sm501_platdata *pdata = sm->platdata; | |
999 | struct gpio_chip *gchip = &chip->gpio; | |
60e540d6 | 1000 | int base = pdata->gpio_base; |
f61be273 BD |
1001 | |
1002 | memcpy(chip, &gpio_chip_template, sizeof(struct gpio_chip)); | |
1003 | ||
1004 | if (chip == &gpio->high) { | |
60e540d6 AP |
1005 | if (base > 0) |
1006 | base += 32; | |
f61be273 BD |
1007 | chip->regbase = gpio->regs + SM501_GPIO_DATA_HIGH; |
1008 | gchip->label = "SM501-HIGH"; | |
1009 | } else { | |
1010 | chip->regbase = gpio->regs + SM501_GPIO_DATA_LOW; | |
1011 | gchip->label = "SM501-LOW"; | |
1012 | } | |
1013 | ||
1014 | gchip->base = base; | |
1015 | chip->ourgpio = gpio; | |
1016 | ||
1017 | return gpiochip_add(gchip); | |
1018 | } | |
1019 | ||
1020 | static int sm501_register_gpio(struct sm501_devdata *sm) | |
1021 | { | |
1022 | struct sm501_gpio *gpio = &sm->gpio; | |
1023 | resource_size_t iobase = sm->io_res->start + SM501_GPIO; | |
1024 | int ret; | |
1025 | int tmp; | |
1026 | ||
1027 | dev_dbg(sm->dev, "registering gpio block %08llx\n", | |
1028 | (unsigned long long)iobase); | |
1029 | ||
1030 | spin_lock_init(&gpio->lock); | |
1031 | ||
1032 | gpio->regs_res = request_mem_region(iobase, 0x20, "sm501-gpio"); | |
1033 | if (gpio->regs_res == NULL) { | |
1034 | dev_err(sm->dev, "gpio: failed to request region\n"); | |
1035 | return -ENXIO; | |
1036 | } | |
1037 | ||
1038 | gpio->regs = ioremap(iobase, 0x20); | |
1039 | if (gpio->regs == NULL) { | |
1040 | dev_err(sm->dev, "gpio: failed to remap registers\n"); | |
1041 | ret = -ENXIO; | |
1042 | goto err_mapped; | |
1043 | } | |
1044 | ||
1045 | /* Register both our chips. */ | |
1046 | ||
1047 | ret = sm501_gpio_register_chip(sm, gpio, &gpio->low); | |
1048 | if (ret) { | |
1049 | dev_err(sm->dev, "failed to add low chip\n"); | |
1050 | goto err_mapped; | |
1051 | } | |
1052 | ||
1053 | ret = sm501_gpio_register_chip(sm, gpio, &gpio->high); | |
1054 | if (ret) { | |
1055 | dev_err(sm->dev, "failed to add high chip\n"); | |
1056 | goto err_low_chip; | |
1057 | } | |
1058 | ||
1059 | gpio->registered = 1; | |
1060 | ||
1061 | return 0; | |
1062 | ||
1063 | err_low_chip: | |
1064 | tmp = gpiochip_remove(&gpio->low.gpio); | |
1065 | if (tmp) { | |
1066 | dev_err(sm->dev, "cannot remove low chip, cannot tidy up\n"); | |
1067 | return ret; | |
1068 | } | |
1069 | ||
1070 | err_mapped: | |
1071 | release_resource(gpio->regs_res); | |
1072 | kfree(gpio->regs_res); | |
1073 | ||
1074 | return ret; | |
1075 | } | |
1076 | ||
1077 | static void sm501_gpio_remove(struct sm501_devdata *sm) | |
1078 | { | |
1079 | int ret; | |
1080 | ||
1081 | ret = gpiochip_remove(&sm->gpio.low.gpio); | |
1082 | if (ret) | |
1083 | dev_err(sm->dev, "cannot remove low chip, cannot tidy up\n"); | |
1084 | ||
1085 | ret = gpiochip_remove(&sm->gpio.high.gpio); | |
1086 | if (ret) | |
1087 | dev_err(sm->dev, "cannot remove high chip, cannot tidy up\n"); | |
1088 | } | |
1089 | ||
42cd2366 BD |
1090 | static int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin) |
1091 | { | |
1092 | struct sm501_gpio *gpio = &sm->gpio; | |
1093 | return pin + (pin < 32) ? gpio->low.gpio.base : gpio->high.gpio.base; | |
1094 | } | |
f61be273 BD |
1095 | #else |
1096 | static int sm501_register_gpio(struct sm501_devdata *sm) | |
1097 | { | |
1098 | return 0; | |
1099 | } | |
1100 | ||
1101 | static void sm501_gpio_remove(struct sm501_devdata *sm) | |
1102 | { | |
1103 | } | |
42cd2366 BD |
1104 | |
1105 | static int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin) | |
1106 | { | |
1107 | return -1; | |
1108 | } | |
f61be273 BD |
1109 | #endif |
1110 | ||
42cd2366 BD |
1111 | static int sm501_register_gpio_i2c_instance(struct sm501_devdata *sm, |
1112 | struct sm501_platdata_gpio_i2c *iic) | |
1113 | { | |
1114 | struct i2c_gpio_platform_data *icd; | |
1115 | struct platform_device *pdev; | |
1116 | ||
1117 | pdev = sm501_create_subdev(sm, "i2c-gpio", 0, | |
1118 | sizeof(struct i2c_gpio_platform_data)); | |
1119 | if (!pdev) | |
1120 | return -ENOMEM; | |
1121 | ||
1122 | icd = pdev->dev.platform_data; | |
1123 | ||
1124 | /* We keep the pin_sda and pin_scl fields relative in case the | |
1125 | * same platform data is passed to >1 SM501. | |
1126 | */ | |
1127 | ||
1128 | icd->sda_pin = sm501_gpio_pin2nr(sm, iic->pin_sda); | |
1129 | icd->scl_pin = sm501_gpio_pin2nr(sm, iic->pin_scl); | |
1130 | icd->timeout = iic->timeout; | |
1131 | icd->udelay = iic->udelay; | |
1132 | ||
1133 | /* note, we can't use either of the pin numbers, as the i2c-gpio | |
1134 | * driver uses the platform.id field to generate the bus number | |
1135 | * to register with the i2c core; The i2c core doesn't have enough | |
1136 | * entries to deal with anything we currently use. | |
1137 | */ | |
1138 | ||
1139 | pdev->id = iic->bus_num; | |
1140 | ||
1141 | dev_info(sm->dev, "registering i2c-%d: sda=%d (%d), scl=%d (%d)\n", | |
1142 | iic->bus_num, | |
1143 | icd->sda_pin, iic->pin_sda, icd->scl_pin, iic->pin_scl); | |
1144 | ||
1145 | return sm501_register_device(sm, pdev); | |
1146 | } | |
1147 | ||
1148 | static int sm501_register_gpio_i2c(struct sm501_devdata *sm, | |
1149 | struct sm501_platdata *pdata) | |
1150 | { | |
1151 | struct sm501_platdata_gpio_i2c *iic = pdata->gpio_i2c; | |
1152 | int index; | |
1153 | int ret; | |
1154 | ||
1155 | for (index = 0; index < pdata->gpio_i2c_nr; index++, iic++) { | |
1156 | ret = sm501_register_gpio_i2c_instance(sm, iic); | |
1157 | if (ret < 0) | |
1158 | return ret; | |
1159 | } | |
1160 | ||
1161 | return 0; | |
1162 | } | |
1163 | ||
b6d6454f BD |
1164 | /* sm501_dbg_regs |
1165 | * | |
1166 | * Debug attribute to attach to parent device to show core registers | |
1167 | */ | |
1168 | ||
1169 | static ssize_t sm501_dbg_regs(struct device *dev, | |
1170 | struct device_attribute *attr, char *buff) | |
1171 | { | |
1172 | struct sm501_devdata *sm = dev_get_drvdata(dev) ; | |
1173 | unsigned int reg; | |
1174 | char *ptr = buff; | |
1175 | int ret; | |
1176 | ||
1177 | for (reg = 0x00; reg < 0x70; reg += 4) { | |
1178 | ret = sprintf(ptr, "%08x = %08x\n", | |
1179 | reg, readl(sm->regs + reg)); | |
1180 | ptr += ret; | |
1181 | } | |
1182 | ||
1183 | return ptr - buff; | |
1184 | } | |
1185 | ||
1186 | ||
1187 | static DEVICE_ATTR(dbg_regs, 0666, sm501_dbg_regs, NULL); | |
1188 | ||
1189 | /* sm501_init_reg | |
1190 | * | |
1191 | * Helper function for the init code to setup a register | |
5136237b BD |
1192 | * |
1193 | * clear the bits which are set in r->mask, and then set | |
1194 | * the bits set in r->set. | |
b6d6454f BD |
1195 | */ |
1196 | ||
1197 | static inline void sm501_init_reg(struct sm501_devdata *sm, | |
1198 | unsigned long reg, | |
1199 | struct sm501_reg_init *r) | |
1200 | { | |
1201 | unsigned long tmp; | |
1202 | ||
1203 | tmp = readl(sm->regs + reg); | |
b6d6454f | 1204 | tmp &= ~r->mask; |
5136237b | 1205 | tmp |= r->set; |
b6d6454f BD |
1206 | writel(tmp, sm->regs + reg); |
1207 | } | |
1208 | ||
1209 | /* sm501_init_regs | |
1210 | * | |
1211 | * Setup core register values | |
1212 | */ | |
1213 | ||
1214 | static void sm501_init_regs(struct sm501_devdata *sm, | |
1215 | struct sm501_initdata *init) | |
1216 | { | |
1217 | sm501_misc_control(sm->dev, | |
1218 | init->misc_control.set, | |
1219 | init->misc_control.mask); | |
1220 | ||
1221 | sm501_init_reg(sm, SM501_MISC_TIMING, &init->misc_timing); | |
1222 | sm501_init_reg(sm, SM501_GPIO31_0_CONTROL, &init->gpio_low); | |
1223 | sm501_init_reg(sm, SM501_GPIO63_32_CONTROL, &init->gpio_high); | |
1224 | ||
b6d6454f BD |
1225 | if (init->m1xclk) { |
1226 | dev_info(sm->dev, "setting M1XCLK to %ld\n", init->m1xclk); | |
1227 | sm501_set_clock(sm->dev, SM501_CLOCK_M1XCLK, init->m1xclk); | |
1228 | } | |
b5913bbd BD |
1229 | |
1230 | if (init->mclk) { | |
1231 | dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk); | |
1232 | sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk); | |
1233 | } | |
81906221 BD |
1234 | |
1235 | } | |
1236 | ||
1237 | /* Check the PLL sources for the M1CLK and M1XCLK | |
1238 | * | |
1239 | * If the M1CLK and M1XCLKs are not sourced from the same PLL, then | |
1240 | * there is a risk (see errata AB-5) that the SM501 will cease proper | |
1241 | * function. If this happens, then it is likely the SM501 will | |
1242 | * hang the system. | |
1243 | */ | |
1244 | ||
1245 | static int sm501_check_clocks(struct sm501_devdata *sm) | |
1246 | { | |
1247 | unsigned long pwrmode = readl(sm->regs + SM501_CURRENT_CLOCK); | |
1248 | unsigned long msrc = (pwrmode & SM501_POWERMODE_M_SRC); | |
1249 | unsigned long m1src = (pwrmode & SM501_POWERMODE_M1_SRC); | |
1250 | ||
1251 | return ((msrc == 0 && m1src != 0) || (msrc != 0 && m1src == 0)); | |
b6d6454f BD |
1252 | } |
1253 | ||
1254 | static unsigned int sm501_mem_local[] = { | |
1255 | [0] = 4*1024*1024, | |
1256 | [1] = 8*1024*1024, | |
1257 | [2] = 16*1024*1024, | |
1258 | [3] = 32*1024*1024, | |
1259 | [4] = 64*1024*1024, | |
1260 | [5] = 2*1024*1024, | |
1261 | }; | |
1262 | ||
1263 | /* sm501_init_dev | |
1264 | * | |
1265 | * Common init code for an SM501 | |
1266 | */ | |
1267 | ||
1268 | static int sm501_init_dev(struct sm501_devdata *sm) | |
1269 | { | |
61711f8f | 1270 | struct sm501_initdata *idata; |
42cd2366 | 1271 | struct sm501_platdata *pdata; |
b6d6454f BD |
1272 | resource_size_t mem_avail; |
1273 | unsigned long dramctrl; | |
1e27dbe7 | 1274 | unsigned long devid; |
b6d6454f BD |
1275 | int ret; |
1276 | ||
1277 | mutex_init(&sm->clock_lock); | |
1278 | spin_lock_init(&sm->reg_lock); | |
1279 | ||
1280 | INIT_LIST_HEAD(&sm->devices); | |
1281 | ||
1e27dbe7 | 1282 | devid = readl(sm->regs + SM501_DEVICEID); |
b6d6454f | 1283 | |
1e27dbe7 BD |
1284 | if ((devid & SM501_DEVICEID_IDMASK) != SM501_DEVICEID_SM501) { |
1285 | dev_err(sm->dev, "incorrect device id %08lx\n", devid); | |
1286 | return -EINVAL; | |
1287 | } | |
1288 | ||
61711f8f MD |
1289 | /* disable irqs */ |
1290 | writel(0, sm->regs + SM501_IRQ_MASK); | |
1291 | ||
1e27dbe7 | 1292 | dramctrl = readl(sm->regs + SM501_DRAM_CONTROL); |
b6d6454f BD |
1293 | mem_avail = sm501_mem_local[(dramctrl >> 13) & 0x7]; |
1294 | ||
1e27dbe7 BD |
1295 | dev_info(sm->dev, "SM501 At %p: Version %08lx, %ld Mb, IRQ %d\n", |
1296 | sm->regs, devid, (unsigned long)mem_avail >> 20, sm->irq); | |
b6d6454f | 1297 | |
3149be50 VS |
1298 | sm->rev = devid & SM501_DEVICEID_REVMASK; |
1299 | ||
331d7475 | 1300 | sm501_dump_gate(sm); |
b6d6454f BD |
1301 | |
1302 | ret = device_create_file(sm->dev, &dev_attr_dbg_regs); | |
1303 | if (ret) | |
1304 | dev_err(sm->dev, "failed to create debug regs file\n"); | |
1305 | ||
1306 | sm501_dump_clk(sm); | |
1307 | ||
1308 | /* check to see if we have some device initialisation */ | |
1309 | ||
42cd2366 BD |
1310 | pdata = sm->platdata; |
1311 | idata = pdata ? pdata->init : NULL; | |
1312 | ||
61711f8f MD |
1313 | if (idata) { |
1314 | sm501_init_regs(sm, idata); | |
b6d6454f | 1315 | |
61711f8f MD |
1316 | if (idata->devices & SM501_USE_USB_HOST) |
1317 | sm501_register_usbhost(sm, &mem_avail); | |
1318 | if (idata->devices & (SM501_USE_UART0 | SM501_USE_UART1)) | |
1319 | sm501_register_uart(sm, idata->devices); | |
f61be273 BD |
1320 | if (idata->devices & SM501_USE_GPIO) |
1321 | sm501_register_gpio(sm); | |
b6d6454f BD |
1322 | } |
1323 | ||
42cd2366 BD |
1324 | if (pdata->gpio_i2c != NULL && pdata->gpio_i2c_nr > 0) { |
1325 | if (!sm->gpio.registered) | |
1326 | dev_err(sm->dev, "no gpio registered for i2c gpio.\n"); | |
1327 | else | |
1328 | sm501_register_gpio_i2c(sm, pdata); | |
1329 | } | |
1330 | ||
81906221 BD |
1331 | ret = sm501_check_clocks(sm); |
1332 | if (ret) { | |
1333 | dev_err(sm->dev, "M1X and M clocks sourced from different " | |
1334 | "PLLs\n"); | |
1335 | return -EINVAL; | |
1336 | } | |
1337 | ||
b6d6454f BD |
1338 | /* always create a framebuffer */ |
1339 | sm501_register_display(sm, &mem_avail); | |
1340 | ||
1341 | return 0; | |
1342 | } | |
1343 | ||
1344 | static int sm501_plat_probe(struct platform_device *dev) | |
1345 | { | |
1346 | struct sm501_devdata *sm; | |
1347 | int err; | |
1348 | ||
1349 | sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL); | |
1350 | if (sm == NULL) { | |
1351 | dev_err(&dev->dev, "no memory for device data\n"); | |
1352 | err = -ENOMEM; | |
1353 | goto err1; | |
1354 | } | |
1355 | ||
1356 | sm->dev = &dev->dev; | |
1357 | sm->pdev_id = dev->id; | |
1358 | sm->irq = platform_get_irq(dev, 0); | |
1359 | sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1); | |
1360 | sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
1361 | sm->platdata = dev->dev.platform_data; | |
1362 | ||
1363 | if (sm->irq < 0) { | |
1364 | dev_err(&dev->dev, "failed to get irq resource\n"); | |
1365 | err = sm->irq; | |
1366 | goto err_res; | |
1367 | } | |
1368 | ||
1369 | if (sm->io_res == NULL || sm->mem_res == NULL) { | |
1370 | dev_err(&dev->dev, "failed to get IO resource\n"); | |
1371 | err = -ENOENT; | |
1372 | goto err_res; | |
1373 | } | |
1374 | ||
1375 | sm->regs_claim = request_mem_region(sm->io_res->start, | |
1376 | 0x100, "sm501"); | |
1377 | ||
1378 | if (sm->regs_claim == NULL) { | |
1379 | dev_err(&dev->dev, "cannot claim registers\n"); | |
1380 | err= -EBUSY; | |
1381 | goto err_res; | |
1382 | } | |
1383 | ||
1384 | platform_set_drvdata(dev, sm); | |
1385 | ||
1386 | sm->regs = ioremap(sm->io_res->start, | |
1387 | (sm->io_res->end - sm->io_res->start) - 1); | |
1388 | ||
1389 | if (sm->regs == NULL) { | |
1390 | dev_err(&dev->dev, "cannot remap registers\n"); | |
1391 | err = -EIO; | |
1392 | goto err_claim; | |
1393 | } | |
1394 | ||
1395 | return sm501_init_dev(sm); | |
1396 | ||
1397 | err_claim: | |
1398 | release_resource(sm->regs_claim); | |
1399 | kfree(sm->regs_claim); | |
1400 | err_res: | |
1401 | kfree(sm); | |
1402 | err1: | |
1403 | return err; | |
1404 | ||
1405 | } | |
1406 | ||
331d7475 | 1407 | #ifdef CONFIG_PM |
472dba7d | 1408 | |
331d7475 BD |
1409 | /* power management support */ |
1410 | ||
472dba7d BD |
1411 | static void sm501_set_power(struct sm501_devdata *sm, int on) |
1412 | { | |
1413 | struct sm501_platdata *pd = sm->platdata; | |
1414 | ||
1415 | if (pd == NULL) | |
1416 | return; | |
1417 | ||
1418 | if (pd->get_power) { | |
1419 | if (pd->get_power(sm->dev) == on) { | |
1420 | dev_dbg(sm->dev, "is already %d\n", on); | |
1421 | return; | |
1422 | } | |
1423 | } | |
1424 | ||
1425 | if (pd->set_power) { | |
1426 | dev_dbg(sm->dev, "setting power to %d\n", on); | |
1427 | ||
1428 | pd->set_power(sm->dev, on); | |
1429 | sm501_mdelay(sm, 10); | |
1430 | } | |
1431 | } | |
1432 | ||
331d7475 BD |
1433 | static int sm501_plat_suspend(struct platform_device *pdev, pm_message_t state) |
1434 | { | |
1435 | struct sm501_devdata *sm = platform_get_drvdata(pdev); | |
1436 | ||
1437 | sm->in_suspend = 1; | |
1438 | sm->pm_misc = readl(sm->regs + SM501_MISC_CONTROL); | |
1439 | ||
1440 | sm501_dump_regs(sm); | |
472dba7d BD |
1441 | |
1442 | if (sm->platdata) { | |
1443 | if (sm->platdata->flags & SM501_FLAG_SUSPEND_OFF) | |
1444 | sm501_set_power(sm, 0); | |
1445 | } | |
1446 | ||
331d7475 BD |
1447 | return 0; |
1448 | } | |
1449 | ||
1450 | static int sm501_plat_resume(struct platform_device *pdev) | |
1451 | { | |
1452 | struct sm501_devdata *sm = platform_get_drvdata(pdev); | |
1453 | ||
472dba7d BD |
1454 | sm501_set_power(sm, 1); |
1455 | ||
331d7475 BD |
1456 | sm501_dump_regs(sm); |
1457 | sm501_dump_gate(sm); | |
1458 | sm501_dump_clk(sm); | |
1459 | ||
1460 | /* check to see if we are in the same state as when suspended */ | |
1461 | ||
1462 | if (readl(sm->regs + SM501_MISC_CONTROL) != sm->pm_misc) { | |
1463 | dev_info(sm->dev, "SM501_MISC_CONTROL changed over sleep\n"); | |
1464 | writel(sm->pm_misc, sm->regs + SM501_MISC_CONTROL); | |
1465 | ||
1466 | /* our suspend causes the controller state to change, | |
1467 | * either by something attempting setup, power loss, | |
1468 | * or an external reset event on power change */ | |
1469 | ||
1470 | if (sm->platdata && sm->platdata->init) { | |
1471 | sm501_init_regs(sm, sm->platdata->init); | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | /* dump our state from resume */ | |
1476 | ||
1477 | sm501_dump_regs(sm); | |
1478 | sm501_dump_clk(sm); | |
1479 | ||
1480 | sm->in_suspend = 0; | |
1481 | ||
1482 | return 0; | |
1483 | } | |
1484 | #else | |
1485 | #define sm501_plat_suspend NULL | |
1486 | #define sm501_plat_resume NULL | |
1487 | #endif | |
1488 | ||
b6d6454f BD |
1489 | /* Initialisation data for PCI devices */ |
1490 | ||
1491 | static struct sm501_initdata sm501_pci_initdata = { | |
1492 | .gpio_high = { | |
1493 | .set = 0x3F000000, /* 24bit panel */ | |
1494 | .mask = 0x0, | |
1495 | }, | |
1496 | .misc_timing = { | |
1497 | .set = 0x010100, /* SDRAM timing */ | |
1498 | .mask = 0x1F1F00, | |
1499 | }, | |
1500 | .misc_control = { | |
1501 | .set = SM501_MISC_PNL_24BIT, | |
1502 | .mask = 0, | |
1503 | }, | |
1504 | ||
1505 | .devices = SM501_USE_ALL, | |
81906221 BD |
1506 | |
1507 | /* Errata AB-3 says that 72MHz is the fastest available | |
1508 | * for 33MHZ PCI with proper bus-mastering operation */ | |
1509 | ||
1510 | .mclk = 72 * MHZ, | |
1511 | .m1xclk = 144 * MHZ, | |
b6d6454f BD |
1512 | }; |
1513 | ||
1514 | static struct sm501_platdata_fbsub sm501_pdata_fbsub = { | |
1515 | .flags = (SM501FB_FLAG_USE_INIT_MODE | | |
1516 | SM501FB_FLAG_USE_HWCURSOR | | |
1517 | SM501FB_FLAG_USE_HWACCEL | | |
1518 | SM501FB_FLAG_DISABLE_AT_EXIT), | |
1519 | }; | |
1520 | ||
1521 | static struct sm501_platdata_fb sm501_fb_pdata = { | |
1522 | .fb_route = SM501_FB_OWN, | |
1523 | .fb_crt = &sm501_pdata_fbsub, | |
1524 | .fb_pnl = &sm501_pdata_fbsub, | |
1525 | }; | |
1526 | ||
1527 | static struct sm501_platdata sm501_pci_platdata = { | |
1528 | .init = &sm501_pci_initdata, | |
1529 | .fb = &sm501_fb_pdata, | |
60e540d6 | 1530 | .gpio_base = -1, |
b6d6454f BD |
1531 | }; |
1532 | ||
1533 | static int sm501_pci_probe(struct pci_dev *dev, | |
1534 | const struct pci_device_id *id) | |
1535 | { | |
1536 | struct sm501_devdata *sm; | |
1537 | int err; | |
1538 | ||
1539 | sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL); | |
1540 | if (sm == NULL) { | |
1541 | dev_err(&dev->dev, "no memory for device data\n"); | |
1542 | err = -ENOMEM; | |
1543 | goto err1; | |
1544 | } | |
1545 | ||
1546 | /* set a default set of platform data */ | |
1547 | dev->dev.platform_data = sm->platdata = &sm501_pci_platdata; | |
1548 | ||
1549 | /* set a hopefully unique id for our child platform devices */ | |
1550 | sm->pdev_id = 32 + dev->devfn; | |
1551 | ||
1552 | pci_set_drvdata(dev, sm); | |
1553 | ||
1554 | err = pci_enable_device(dev); | |
1555 | if (err) { | |
1556 | dev_err(&dev->dev, "cannot enable device\n"); | |
1557 | goto err2; | |
1558 | } | |
1559 | ||
1560 | sm->dev = &dev->dev; | |
1561 | sm->irq = dev->irq; | |
1562 | ||
1563 | #ifdef __BIG_ENDIAN | |
1564 | /* if the system is big-endian, we most probably have a | |
1565 | * translation in the IO layer making the PCI bus little endian | |
1566 | * so make the framebuffer swapped pixels */ | |
1567 | ||
1568 | sm501_fb_pdata.flags |= SM501_FBPD_SWAP_FB_ENDIAN; | |
1569 | #endif | |
1570 | ||
1571 | /* check our resources */ | |
1572 | ||
1573 | if (!(pci_resource_flags(dev, 0) & IORESOURCE_MEM)) { | |
1574 | dev_err(&dev->dev, "region #0 is not memory?\n"); | |
1575 | err = -EINVAL; | |
1576 | goto err3; | |
1577 | } | |
1578 | ||
1579 | if (!(pci_resource_flags(dev, 1) & IORESOURCE_MEM)) { | |
1580 | dev_err(&dev->dev, "region #1 is not memory?\n"); | |
1581 | err = -EINVAL; | |
1582 | goto err3; | |
1583 | } | |
1584 | ||
1585 | /* make our resources ready for sharing */ | |
1586 | ||
1587 | sm->io_res = &dev->resource[1]; | |
1588 | sm->mem_res = &dev->resource[0]; | |
1589 | ||
1590 | sm->regs_claim = request_mem_region(sm->io_res->start, | |
1591 | 0x100, "sm501"); | |
1592 | if (sm->regs_claim == NULL) { | |
1593 | dev_err(&dev->dev, "cannot claim registers\n"); | |
1594 | err= -EBUSY; | |
1595 | goto err3; | |
1596 | } | |
1597 | ||
1598 | sm->regs = ioremap(pci_resource_start(dev, 1), | |
1599 | pci_resource_len(dev, 1)); | |
1600 | ||
1601 | if (sm->regs == NULL) { | |
1602 | dev_err(&dev->dev, "cannot remap registers\n"); | |
1603 | err = -EIO; | |
1604 | goto err4; | |
1605 | } | |
1606 | ||
1607 | sm501_init_dev(sm); | |
1608 | return 0; | |
1609 | ||
1610 | err4: | |
1611 | release_resource(sm->regs_claim); | |
1612 | kfree(sm->regs_claim); | |
1613 | err3: | |
1614 | pci_disable_device(dev); | |
1615 | err2: | |
1616 | pci_set_drvdata(dev, NULL); | |
1617 | kfree(sm); | |
1618 | err1: | |
1619 | return err; | |
1620 | } | |
1621 | ||
1622 | static void sm501_remove_sub(struct sm501_devdata *sm, | |
1623 | struct sm501_device *smdev) | |
1624 | { | |
1625 | list_del(&smdev->list); | |
1626 | platform_device_unregister(&smdev->pdev); | |
1627 | } | |
1628 | ||
1629 | static void sm501_dev_remove(struct sm501_devdata *sm) | |
1630 | { | |
1631 | struct sm501_device *smdev, *tmp; | |
1632 | ||
1633 | list_for_each_entry_safe(smdev, tmp, &sm->devices, list) | |
1634 | sm501_remove_sub(sm, smdev); | |
1635 | ||
1636 | device_remove_file(sm->dev, &dev_attr_dbg_regs); | |
f61be273 BD |
1637 | |
1638 | if (sm->gpio.registered) | |
1639 | sm501_gpio_remove(sm); | |
b6d6454f BD |
1640 | } |
1641 | ||
1642 | static void sm501_pci_remove(struct pci_dev *dev) | |
1643 | { | |
1644 | struct sm501_devdata *sm = pci_get_drvdata(dev); | |
1645 | ||
1646 | sm501_dev_remove(sm); | |
1647 | iounmap(sm->regs); | |
1648 | ||
1649 | release_resource(sm->regs_claim); | |
1650 | kfree(sm->regs_claim); | |
1651 | ||
1652 | pci_set_drvdata(dev, NULL); | |
1653 | pci_disable_device(dev); | |
1654 | } | |
1655 | ||
1656 | static int sm501_plat_remove(struct platform_device *dev) | |
1657 | { | |
1658 | struct sm501_devdata *sm = platform_get_drvdata(dev); | |
1659 | ||
1660 | sm501_dev_remove(sm); | |
1661 | iounmap(sm->regs); | |
1662 | ||
1663 | release_resource(sm->regs_claim); | |
1664 | kfree(sm->regs_claim); | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | static struct pci_device_id sm501_pci_tbl[] = { | |
1670 | { 0x126f, 0x0501, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
1671 | { 0, }, | |
1672 | }; | |
1673 | ||
1674 | MODULE_DEVICE_TABLE(pci, sm501_pci_tbl); | |
1675 | ||
1676 | static struct pci_driver sm501_pci_drv = { | |
1677 | .name = "sm501", | |
1678 | .id_table = sm501_pci_tbl, | |
1679 | .probe = sm501_pci_probe, | |
1680 | .remove = sm501_pci_remove, | |
1681 | }; | |
1682 | ||
4f46d6e7 KS |
1683 | MODULE_ALIAS("platform:sm501"); |
1684 | ||
b6d6454f BD |
1685 | static struct platform_driver sm501_plat_drv = { |
1686 | .driver = { | |
1687 | .name = "sm501", | |
1688 | .owner = THIS_MODULE, | |
1689 | }, | |
1690 | .probe = sm501_plat_probe, | |
1691 | .remove = sm501_plat_remove, | |
331d7475 BD |
1692 | .suspend = sm501_plat_suspend, |
1693 | .resume = sm501_plat_resume, | |
b6d6454f BD |
1694 | }; |
1695 | ||
1696 | static int __init sm501_base_init(void) | |
1697 | { | |
1698 | platform_driver_register(&sm501_plat_drv); | |
f15e66b9 | 1699 | return pci_register_driver(&sm501_pci_drv); |
b6d6454f BD |
1700 | } |
1701 | ||
1702 | static void __exit sm501_base_exit(void) | |
1703 | { | |
1704 | platform_driver_unregister(&sm501_plat_drv); | |
1705 | pci_unregister_driver(&sm501_pci_drv); | |
1706 | } | |
1707 | ||
1708 | module_init(sm501_base_init); | |
1709 | module_exit(sm501_base_exit); | |
1710 | ||
1711 | MODULE_DESCRIPTION("SM501 Core Driver"); | |
1712 | MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>, Vincent Sanders"); | |
1713 | MODULE_LICENSE("GPL v2"); |