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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> | |
42cd2366 | 22 | #include <linux/i2c-gpio.h> |
b6d6454f BD |
23 | |
24 | #include <linux/sm501.h> | |
25 | #include <linux/sm501-regs.h> | |
61711f8f | 26 | #include <linux/serial_8250.h> |
b6d6454f BD |
27 | |
28 | #include <asm/io.h> | |
29 | ||
30 | struct sm501_device { | |
31 | struct list_head list; | |
32 | struct platform_device pdev; | |
33 | }; | |
34 | ||
f61be273 BD |
35 | struct sm501_gpio; |
36 | ||
f2999209 BD |
37 | #ifdef CONFIG_MFD_SM501_GPIO |
38 | #include <linux/gpio.h> | |
39 | ||
f61be273 BD |
40 | struct sm501_gpio_chip { |
41 | struct gpio_chip gpio; | |
42 | struct sm501_gpio *ourgpio; /* to get back to parent. */ | |
43 | void __iomem *regbase; | |
98325f8f | 44 | void __iomem *control; /* address of control reg. */ |
f61be273 BD |
45 | }; |
46 | ||
47 | struct sm501_gpio { | |
48 | struct sm501_gpio_chip low; | |
49 | struct sm501_gpio_chip high; | |
50 | spinlock_t lock; | |
51 | ||
52 | unsigned int registered : 1; | |
53 | void __iomem *regs; | |
54 | struct resource *regs_res; | |
55 | }; | |
f2999209 BD |
56 | #else |
57 | struct sm501_gpio { | |
58 | /* no gpio support, empty definition for sm501_devdata. */ | |
59 | }; | |
60 | #endif | |
f61be273 | 61 | |
b6d6454f BD |
62 | struct sm501_devdata { |
63 | spinlock_t reg_lock; | |
64 | struct mutex clock_lock; | |
65 | struct list_head devices; | |
f61be273 | 66 | struct sm501_gpio gpio; |
b6d6454f BD |
67 | |
68 | struct device *dev; | |
69 | struct resource *io_res; | |
70 | struct resource *mem_res; | |
71 | struct resource *regs_claim; | |
72 | struct sm501_platdata *platdata; | |
73 | ||
f61be273 | 74 | |
331d7475 BD |
75 | unsigned int in_suspend; |
76 | unsigned long pm_misc; | |
77 | ||
b6d6454f BD |
78 | int unit_power[20]; |
79 | unsigned int pdev_id; | |
80 | unsigned int irq; | |
81 | void __iomem *regs; | |
3149be50 | 82 | unsigned int rev; |
b6d6454f BD |
83 | }; |
84 | ||
f61be273 | 85 | |
b6d6454f BD |
86 | #define MHZ (1000 * 1000) |
87 | ||
88 | #ifdef DEBUG | |
245904a4 | 89 | static const unsigned int div_tab[] = { |
b6d6454f BD |
90 | [0] = 1, |
91 | [1] = 2, | |
92 | [2] = 4, | |
93 | [3] = 8, | |
94 | [4] = 16, | |
95 | [5] = 32, | |
96 | [6] = 64, | |
97 | [7] = 128, | |
98 | [8] = 3, | |
99 | [9] = 6, | |
100 | [10] = 12, | |
101 | [11] = 24, | |
102 | [12] = 48, | |
103 | [13] = 96, | |
104 | [14] = 192, | |
105 | [15] = 384, | |
106 | [16] = 5, | |
107 | [17] = 10, | |
108 | [18] = 20, | |
109 | [19] = 40, | |
110 | [20] = 80, | |
111 | [21] = 160, | |
112 | [22] = 320, | |
113 | [23] = 604, | |
114 | }; | |
115 | ||
116 | static unsigned long decode_div(unsigned long pll2, unsigned long val, | |
117 | unsigned int lshft, unsigned int selbit, | |
245904a4 | 118 | unsigned long mask) |
b6d6454f BD |
119 | { |
120 | if (val & selbit) | |
121 | pll2 = 288 * MHZ; | |
122 | ||
245904a4 | 123 | return pll2 / div_tab[(val >> lshft) & mask]; |
b6d6454f BD |
124 | } |
125 | ||
126 | #define fmt_freq(x) ((x) / MHZ), ((x) % MHZ), (x) | |
127 | ||
128 | /* sm501_dump_clk | |
129 | * | |
130 | * Print out the current clock configuration for the device | |
131 | */ | |
132 | ||
133 | static void sm501_dump_clk(struct sm501_devdata *sm) | |
134 | { | |
135 | unsigned long misct = readl(sm->regs + SM501_MISC_TIMING); | |
136 | unsigned long pm0 = readl(sm->regs + SM501_POWER_MODE_0_CLOCK); | |
137 | unsigned long pm1 = readl(sm->regs + SM501_POWER_MODE_1_CLOCK); | |
138 | unsigned long pmc = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
139 | unsigned long sdclk0, sdclk1; | |
140 | unsigned long pll2 = 0; | |
141 | ||
142 | switch (misct & 0x30) { | |
143 | case 0x00: | |
144 | pll2 = 336 * MHZ; | |
145 | break; | |
146 | case 0x10: | |
147 | pll2 = 288 * MHZ; | |
148 | break; | |
149 | case 0x20: | |
150 | pll2 = 240 * MHZ; | |
151 | break; | |
152 | case 0x30: | |
153 | pll2 = 192 * MHZ; | |
154 | break; | |
155 | } | |
156 | ||
157 | sdclk0 = (misct & (1<<12)) ? pll2 : 288 * MHZ; | |
245904a4 | 158 | sdclk0 /= div_tab[((misct >> 8) & 0xf)]; |
b6d6454f BD |
159 | |
160 | sdclk1 = (misct & (1<<20)) ? pll2 : 288 * MHZ; | |
245904a4 | 161 | sdclk1 /= div_tab[((misct >> 16) & 0xf)]; |
b6d6454f BD |
162 | |
163 | dev_dbg(sm->dev, "MISCT=%08lx, PM0=%08lx, PM1=%08lx\n", | |
164 | misct, pm0, pm1); | |
165 | ||
166 | dev_dbg(sm->dev, "PLL2 = %ld.%ld MHz (%ld), SDCLK0=%08lx, SDCLK1=%08lx\n", | |
167 | fmt_freq(pll2), sdclk0, sdclk1); | |
168 | ||
169 | dev_dbg(sm->dev, "SDRAM: PM0=%ld, PM1=%ld\n", sdclk0, sdclk1); | |
170 | ||
171 | dev_dbg(sm->dev, "PM0[%c]: " | |
172 | "P2 %ld.%ld MHz (%ld), V2 %ld.%ld (%ld), " | |
48986f06 | 173 | "M %ld.%ld (%ld), MX1 %ld.%ld (%ld)\n", |
b6d6454f | 174 | (pmc & 3 ) == 0 ? '*' : '-', |
245904a4 VS |
175 | fmt_freq(decode_div(pll2, pm0, 24, 1<<29, 31)), |
176 | fmt_freq(decode_div(pll2, pm0, 16, 1<<20, 15)), | |
177 | fmt_freq(decode_div(pll2, pm0, 8, 1<<12, 15)), | |
178 | fmt_freq(decode_div(pll2, pm0, 0, 1<<4, 15))); | |
b6d6454f BD |
179 | |
180 | dev_dbg(sm->dev, "PM1[%c]: " | |
181 | "P2 %ld.%ld MHz (%ld), V2 %ld.%ld (%ld), " | |
182 | "M %ld.%ld (%ld), MX1 %ld.%ld (%ld)\n", | |
183 | (pmc & 3 ) == 1 ? '*' : '-', | |
245904a4 VS |
184 | fmt_freq(decode_div(pll2, pm1, 24, 1<<29, 31)), |
185 | fmt_freq(decode_div(pll2, pm1, 16, 1<<20, 15)), | |
186 | fmt_freq(decode_div(pll2, pm1, 8, 1<<12, 15)), | |
187 | fmt_freq(decode_div(pll2, pm1, 0, 1<<4, 15))); | |
b6d6454f | 188 | } |
331d7475 BD |
189 | |
190 | static void sm501_dump_regs(struct sm501_devdata *sm) | |
191 | { | |
192 | void __iomem *regs = sm->regs; | |
193 | ||
194 | dev_info(sm->dev, "System Control %08x\n", | |
195 | readl(regs + SM501_SYSTEM_CONTROL)); | |
196 | dev_info(sm->dev, "Misc Control %08x\n", | |
197 | readl(regs + SM501_MISC_CONTROL)); | |
198 | dev_info(sm->dev, "GPIO Control Low %08x\n", | |
199 | readl(regs + SM501_GPIO31_0_CONTROL)); | |
200 | dev_info(sm->dev, "GPIO Control Hi %08x\n", | |
201 | readl(regs + SM501_GPIO63_32_CONTROL)); | |
202 | dev_info(sm->dev, "DRAM Control %08x\n", | |
203 | readl(regs + SM501_DRAM_CONTROL)); | |
204 | dev_info(sm->dev, "Arbitration Ctrl %08x\n", | |
205 | readl(regs + SM501_ARBTRTN_CONTROL)); | |
206 | dev_info(sm->dev, "Misc Timing %08x\n", | |
207 | readl(regs + SM501_MISC_TIMING)); | |
208 | } | |
209 | ||
210 | static void sm501_dump_gate(struct sm501_devdata *sm) | |
b6d6454f | 211 | { |
331d7475 BD |
212 | dev_info(sm->dev, "CurrentGate %08x\n", |
213 | readl(sm->regs + SM501_CURRENT_GATE)); | |
214 | dev_info(sm->dev, "CurrentClock %08x\n", | |
215 | readl(sm->regs + SM501_CURRENT_CLOCK)); | |
216 | dev_info(sm->dev, "PowerModeControl %08x\n", | |
217 | readl(sm->regs + SM501_POWER_MODE_CONTROL)); | |
b6d6454f | 218 | } |
331d7475 BD |
219 | |
220 | #else | |
221 | static inline void sm501_dump_gate(struct sm501_devdata *sm) { } | |
222 | static inline void sm501_dump_regs(struct sm501_devdata *sm) { } | |
223 | static inline void sm501_dump_clk(struct sm501_devdata *sm) { } | |
b6d6454f BD |
224 | #endif |
225 | ||
226 | /* sm501_sync_regs | |
227 | * | |
228 | * ensure the | |
229 | */ | |
230 | ||
231 | static void sm501_sync_regs(struct sm501_devdata *sm) | |
232 | { | |
233 | readl(sm->regs); | |
234 | } | |
235 | ||
331d7475 BD |
236 | static inline void sm501_mdelay(struct sm501_devdata *sm, unsigned int delay) |
237 | { | |
238 | /* during suspend/resume, we are currently not allowed to sleep, | |
239 | * so change to using mdelay() instead of msleep() if we | |
240 | * are in one of these paths */ | |
241 | ||
242 | if (sm->in_suspend) | |
243 | mdelay(delay); | |
244 | else | |
245 | msleep(delay); | |
246 | } | |
247 | ||
b6d6454f BD |
248 | /* sm501_misc_control |
249 | * | |
331d7475 | 250 | * alters the miscellaneous control parameters |
b6d6454f BD |
251 | */ |
252 | ||
253 | int sm501_misc_control(struct device *dev, | |
254 | unsigned long set, unsigned long clear) | |
255 | { | |
256 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
257 | unsigned long misc; | |
258 | unsigned long save; | |
259 | unsigned long to; | |
260 | ||
261 | spin_lock_irqsave(&sm->reg_lock, save); | |
262 | ||
263 | misc = readl(sm->regs + SM501_MISC_CONTROL); | |
264 | to = (misc & ~clear) | set; | |
265 | ||
266 | if (to != misc) { | |
267 | writel(to, sm->regs + SM501_MISC_CONTROL); | |
268 | sm501_sync_regs(sm); | |
269 | ||
270 | dev_dbg(sm->dev, "MISC_CONTROL %08lx\n", misc); | |
271 | } | |
272 | ||
273 | spin_unlock_irqrestore(&sm->reg_lock, save); | |
274 | return to; | |
275 | } | |
276 | ||
277 | EXPORT_SYMBOL_GPL(sm501_misc_control); | |
278 | ||
279 | /* sm501_modify_reg | |
280 | * | |
281 | * Modify a register in the SM501 which may be shared with other | |
282 | * drivers. | |
283 | */ | |
284 | ||
285 | unsigned long sm501_modify_reg(struct device *dev, | |
286 | unsigned long reg, | |
287 | unsigned long set, | |
288 | unsigned long clear) | |
289 | { | |
290 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
291 | unsigned long data; | |
292 | unsigned long save; | |
293 | ||
294 | spin_lock_irqsave(&sm->reg_lock, save); | |
295 | ||
296 | data = readl(sm->regs + reg); | |
297 | data |= set; | |
298 | data &= ~clear; | |
299 | ||
300 | writel(data, sm->regs + reg); | |
301 | sm501_sync_regs(sm); | |
302 | ||
303 | spin_unlock_irqrestore(&sm->reg_lock, save); | |
304 | ||
305 | return data; | |
306 | } | |
307 | ||
308 | EXPORT_SYMBOL_GPL(sm501_modify_reg); | |
309 | ||
b6d6454f BD |
310 | /* sm501_unit_power |
311 | * | |
312 | * alters the power active gate to set specific units on or off | |
313 | */ | |
314 | ||
315 | int sm501_unit_power(struct device *dev, unsigned int unit, unsigned int to) | |
316 | { | |
317 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
318 | unsigned long mode; | |
319 | unsigned long gate; | |
320 | unsigned long clock; | |
321 | ||
322 | mutex_lock(&sm->clock_lock); | |
323 | ||
324 | mode = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
325 | gate = readl(sm->regs + SM501_CURRENT_GATE); | |
326 | clock = readl(sm->regs + SM501_CURRENT_CLOCK); | |
327 | ||
328 | mode &= 3; /* get current power mode */ | |
329 | ||
bf703c3f | 330 | if (unit >= ARRAY_SIZE(sm->unit_power)) { |
145980a0 | 331 | dev_err(dev, "%s: bad unit %d\n", __func__, unit); |
b6d6454f BD |
332 | goto already; |
333 | } | |
334 | ||
145980a0 | 335 | dev_dbg(sm->dev, "%s: unit %d, cur %d, to %d\n", __func__, unit, |
b6d6454f BD |
336 | sm->unit_power[unit], to); |
337 | ||
338 | if (to == 0 && sm->unit_power[unit] == 0) { | |
339 | dev_err(sm->dev, "unit %d is already shutdown\n", unit); | |
340 | goto already; | |
341 | } | |
342 | ||
343 | sm->unit_power[unit] += to ? 1 : -1; | |
344 | to = sm->unit_power[unit] ? 1 : 0; | |
345 | ||
346 | if (to) { | |
347 | if (gate & (1 << unit)) | |
348 | goto already; | |
349 | gate |= (1 << unit); | |
350 | } else { | |
351 | if (!(gate & (1 << unit))) | |
352 | goto already; | |
353 | gate &= ~(1 << unit); | |
354 | } | |
355 | ||
356 | switch (mode) { | |
357 | case 1: | |
358 | writel(gate, sm->regs + SM501_POWER_MODE_0_GATE); | |
359 | writel(clock, sm->regs + SM501_POWER_MODE_0_CLOCK); | |
360 | mode = 0; | |
361 | break; | |
362 | case 2: | |
363 | case 0: | |
364 | writel(gate, sm->regs + SM501_POWER_MODE_1_GATE); | |
365 | writel(clock, sm->regs + SM501_POWER_MODE_1_CLOCK); | |
366 | mode = 1; | |
367 | break; | |
368 | ||
369 | default: | |
992bb253 JS |
370 | gate = -1; |
371 | goto already; | |
b6d6454f BD |
372 | } |
373 | ||
374 | writel(mode, sm->regs + SM501_POWER_MODE_CONTROL); | |
375 | sm501_sync_regs(sm); | |
376 | ||
377 | dev_dbg(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n", | |
378 | gate, clock, mode); | |
379 | ||
331d7475 | 380 | sm501_mdelay(sm, 16); |
b6d6454f BD |
381 | |
382 | already: | |
383 | mutex_unlock(&sm->clock_lock); | |
384 | return gate; | |
385 | } | |
386 | ||
387 | EXPORT_SYMBOL_GPL(sm501_unit_power); | |
388 | ||
389 | ||
390 | /* Perform a rounded division. */ | |
391 | static long sm501fb_round_div(long num, long denom) | |
392 | { | |
393 | /* n / d + 1 / 2 = (2n + d) / 2d */ | |
394 | return (2 * num + denom) / (2 * denom); | |
395 | } | |
396 | ||
397 | /* clock value structure. */ | |
398 | struct sm501_clock { | |
399 | unsigned long mclk; | |
400 | int divider; | |
401 | int shift; | |
3149be50 | 402 | unsigned int m, n, k; |
b6d6454f BD |
403 | }; |
404 | ||
3149be50 VS |
405 | /* sm501_calc_clock |
406 | * | |
407 | * Calculates the nearest discrete clock frequency that | |
408 | * can be achieved with the specified input clock. | |
409 | * the maximum divisor is 3 or 5 | |
410 | */ | |
411 | ||
412 | static int sm501_calc_clock(unsigned long freq, | |
413 | struct sm501_clock *clock, | |
414 | int max_div, | |
415 | unsigned long mclk, | |
416 | long *best_diff) | |
417 | { | |
418 | int ret = 0; | |
419 | int divider; | |
420 | int shift; | |
421 | long diff; | |
422 | ||
423 | /* try dividers 1 and 3 for CRT and for panel, | |
424 | try divider 5 for panel only.*/ | |
425 | ||
426 | for (divider = 1; divider <= max_div; divider += 2) { | |
427 | /* try all 8 shift values.*/ | |
428 | for (shift = 0; shift < 8; shift++) { | |
429 | /* Calculate difference to requested clock */ | |
430 | diff = sm501fb_round_div(mclk, divider << shift) - freq; | |
431 | if (diff < 0) | |
432 | diff = -diff; | |
433 | ||
434 | /* If it is less than the current, use it */ | |
435 | if (diff < *best_diff) { | |
436 | *best_diff = diff; | |
437 | ||
438 | clock->mclk = mclk; | |
439 | clock->divider = divider; | |
440 | clock->shift = shift; | |
441 | ret = 1; | |
442 | } | |
443 | } | |
444 | } | |
445 | ||
446 | return ret; | |
447 | } | |
448 | ||
449 | /* sm501_calc_pll | |
450 | * | |
451 | * Calculates the nearest discrete clock frequency that can be | |
452 | * achieved using the programmable PLL. | |
453 | * the maximum divisor is 3 or 5 | |
454 | */ | |
455 | ||
456 | static unsigned long sm501_calc_pll(unsigned long freq, | |
457 | struct sm501_clock *clock, | |
458 | int max_div) | |
459 | { | |
460 | unsigned long mclk; | |
461 | unsigned int m, n, k; | |
462 | long best_diff = 999999999; | |
463 | ||
464 | /* | |
465 | * The SM502 datasheet doesn't specify the min/max values for M and N. | |
466 | * N = 1 at least doesn't work in practice. | |
467 | */ | |
468 | for (m = 2; m <= 255; m++) { | |
469 | for (n = 2; n <= 127; n++) { | |
470 | for (k = 0; k <= 1; k++) { | |
471 | mclk = (24000000UL * m / n) >> k; | |
472 | ||
473 | if (sm501_calc_clock(freq, clock, max_div, | |
474 | mclk, &best_diff)) { | |
475 | clock->m = m; | |
476 | clock->n = n; | |
477 | clock->k = k; | |
478 | } | |
479 | } | |
480 | } | |
481 | } | |
482 | ||
483 | /* Return best clock. */ | |
484 | return clock->mclk / (clock->divider << clock->shift); | |
485 | } | |
486 | ||
b6d6454f BD |
487 | /* sm501_select_clock |
488 | * | |
3149be50 VS |
489 | * Calculates the nearest discrete clock frequency that can be |
490 | * achieved using the 288MHz and 336MHz PLLs. | |
b6d6454f BD |
491 | * the maximum divisor is 3 or 5 |
492 | */ | |
3149be50 | 493 | |
b6d6454f BD |
494 | static unsigned long sm501_select_clock(unsigned long freq, |
495 | struct sm501_clock *clock, | |
496 | int max_div) | |
497 | { | |
498 | unsigned long mclk; | |
b6d6454f BD |
499 | long best_diff = 999999999; |
500 | ||
501 | /* Try 288MHz and 336MHz clocks. */ | |
502 | for (mclk = 288000000; mclk <= 336000000; mclk += 48000000) { | |
3149be50 | 503 | sm501_calc_clock(freq, clock, max_div, mclk, &best_diff); |
b6d6454f BD |
504 | } |
505 | ||
506 | /* Return best clock. */ | |
507 | return clock->mclk / (clock->divider << clock->shift); | |
508 | } | |
509 | ||
510 | /* sm501_set_clock | |
511 | * | |
512 | * set one of the four clock sources to the closest available frequency to | |
513 | * the one specified | |
514 | */ | |
515 | ||
516 | unsigned long sm501_set_clock(struct device *dev, | |
517 | int clksrc, | |
518 | unsigned long req_freq) | |
519 | { | |
520 | struct sm501_devdata *sm = dev_get_drvdata(dev); | |
521 | unsigned long mode = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
522 | unsigned long gate = readl(sm->regs + SM501_CURRENT_GATE); | |
523 | unsigned long clock = readl(sm->regs + SM501_CURRENT_CLOCK); | |
524 | unsigned char reg; | |
3149be50 | 525 | unsigned int pll_reg = 0; |
3ad2f3fb | 526 | unsigned long sm501_freq; /* the actual frequency achieved */ |
b6d6454f BD |
527 | |
528 | struct sm501_clock to; | |
529 | ||
530 | /* find achivable discrete frequency and setup register value | |
531 | * accordingly, V2XCLK, MCLK and M1XCLK are the same P2XCLK | |
532 | * has an extra bit for the divider */ | |
533 | ||
534 | switch (clksrc) { | |
535 | case SM501_CLOCK_P2XCLK: | |
3ad2f3fb | 536 | /* This clock is divided in half so to achieve the |
b6d6454f BD |
537 | * requested frequency the value must be multiplied by |
538 | * 2. This clock also has an additional pre divisor */ | |
539 | ||
3149be50 VS |
540 | if (sm->rev >= 0xC0) { |
541 | /* SM502 -> use the programmable PLL */ | |
542 | sm501_freq = (sm501_calc_pll(2 * req_freq, | |
543 | &to, 5) / 2); | |
544 | reg = to.shift & 0x07;/* bottom 3 bits are shift */ | |
545 | if (to.divider == 3) | |
546 | reg |= 0x08; /* /3 divider required */ | |
547 | else if (to.divider == 5) | |
548 | reg |= 0x10; /* /5 divider required */ | |
549 | reg |= 0x40; /* select the programmable PLL */ | |
550 | pll_reg = 0x20000 | (to.k << 15) | (to.n << 8) | to.m; | |
551 | } else { | |
552 | sm501_freq = (sm501_select_clock(2 * req_freq, | |
553 | &to, 5) / 2); | |
554 | reg = to.shift & 0x07;/* bottom 3 bits are shift */ | |
555 | if (to.divider == 3) | |
556 | reg |= 0x08; /* /3 divider required */ | |
557 | else if (to.divider == 5) | |
558 | reg |= 0x10; /* /5 divider required */ | |
559 | if (to.mclk != 288000000) | |
560 | reg |= 0x20; /* which mclk pll is source */ | |
561 | } | |
b6d6454f BD |
562 | break; |
563 | ||
564 | case SM501_CLOCK_V2XCLK: | |
3ad2f3fb | 565 | /* This clock is divided in half so to achieve the |
b6d6454f BD |
566 | * requested frequency the value must be multiplied by 2. */ |
567 | ||
568 | sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2); | |
569 | reg=to.shift & 0x07; /* bottom 3 bits are shift */ | |
570 | if (to.divider == 3) | |
571 | reg |= 0x08; /* /3 divider required */ | |
572 | if (to.mclk != 288000000) | |
573 | reg |= 0x10; /* which mclk pll is source */ | |
574 | break; | |
575 | ||
576 | case SM501_CLOCK_MCLK: | |
577 | case SM501_CLOCK_M1XCLK: | |
578 | /* These clocks are the same and not further divided */ | |
579 | ||
580 | sm501_freq = sm501_select_clock( req_freq, &to, 3); | |
581 | reg=to.shift & 0x07; /* bottom 3 bits are shift */ | |
582 | if (to.divider == 3) | |
583 | reg |= 0x08; /* /3 divider required */ | |
584 | if (to.mclk != 288000000) | |
585 | reg |= 0x10; /* which mclk pll is source */ | |
586 | break; | |
587 | ||
588 | default: | |
589 | return 0; /* this is bad */ | |
590 | } | |
591 | ||
592 | mutex_lock(&sm->clock_lock); | |
593 | ||
594 | mode = readl(sm->regs + SM501_POWER_MODE_CONTROL); | |
595 | gate = readl(sm->regs + SM501_CURRENT_GATE); | |
596 | clock = readl(sm->regs + SM501_CURRENT_CLOCK); | |
597 | ||
598 | clock = clock & ~(0xFF << clksrc); | |
599 | clock |= reg<<clksrc; | |
600 | ||
601 | mode &= 3; /* find current mode */ | |
602 | ||
603 | switch (mode) { | |
604 | case 1: | |
605 | writel(gate, sm->regs + SM501_POWER_MODE_0_GATE); | |
606 | writel(clock, sm->regs + SM501_POWER_MODE_0_CLOCK); | |
607 | mode = 0; | |
608 | break; | |
609 | case 2: | |
610 | case 0: | |
611 | writel(gate, sm->regs + SM501_POWER_MODE_1_GATE); | |
612 | writel(clock, sm->regs + SM501_POWER_MODE_1_CLOCK); | |
613 | mode = 1; | |
614 | break; | |
615 | ||
616 | default: | |
617 | mutex_unlock(&sm->clock_lock); | |
618 | return -1; | |
619 | } | |
620 | ||
621 | writel(mode, sm->regs + SM501_POWER_MODE_CONTROL); | |
3149be50 VS |
622 | |
623 | if (pll_reg) | |
624 | writel(pll_reg, sm->regs + SM501_PROGRAMMABLE_PLL_CONTROL); | |
625 | ||
b6d6454f BD |
626 | sm501_sync_regs(sm); |
627 | ||
80e74a80 BD |
628 | dev_dbg(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n", |
629 | gate, clock, mode); | |
b6d6454f | 630 | |
331d7475 | 631 | sm501_mdelay(sm, 16); |
b6d6454f BD |
632 | mutex_unlock(&sm->clock_lock); |
633 | ||
634 | sm501_dump_clk(sm); | |
635 | ||
636 | return sm501_freq; | |
637 | } | |
638 | ||
639 | EXPORT_SYMBOL_GPL(sm501_set_clock); | |
640 | ||
641 | /* sm501_find_clock | |
642 | * | |
643 | * finds the closest available frequency for a given clock | |
644 | */ | |
645 | ||
3149be50 VS |
646 | unsigned long sm501_find_clock(struct device *dev, |
647 | int clksrc, | |
b6d6454f BD |
648 | unsigned long req_freq) |
649 | { | |
3149be50 | 650 | struct sm501_devdata *sm = dev_get_drvdata(dev); |
3ad2f3fb | 651 | unsigned long sm501_freq; /* the frequency achieveable by the 501 */ |
b6d6454f BD |
652 | struct sm501_clock to; |
653 | ||
654 | switch (clksrc) { | |
655 | case SM501_CLOCK_P2XCLK: | |
3149be50 VS |
656 | if (sm->rev >= 0xC0) { |
657 | /* SM502 -> use the programmable PLL */ | |
658 | sm501_freq = (sm501_calc_pll(2 * req_freq, | |
659 | &to, 5) / 2); | |
660 | } else { | |
661 | sm501_freq = (sm501_select_clock(2 * req_freq, | |
662 | &to, 5) / 2); | |
663 | } | |
b6d6454f BD |
664 | break; |
665 | ||
666 | case SM501_CLOCK_V2XCLK: | |
667 | sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2); | |
668 | break; | |
669 | ||
670 | case SM501_CLOCK_MCLK: | |
671 | case SM501_CLOCK_M1XCLK: | |
672 | sm501_freq = sm501_select_clock(req_freq, &to, 3); | |
673 | break; | |
674 | ||
675 | default: | |
676 | sm501_freq = 0; /* error */ | |
677 | } | |
678 | ||
679 | return sm501_freq; | |
680 | } | |
681 | ||
682 | EXPORT_SYMBOL_GPL(sm501_find_clock); | |
683 | ||
684 | static struct sm501_device *to_sm_device(struct platform_device *pdev) | |
685 | { | |
686 | return container_of(pdev, struct sm501_device, pdev); | |
687 | } | |
688 | ||
689 | /* sm501_device_release | |
690 | * | |
691 | * A release function for the platform devices we create to allow us to | |
692 | * free any items we allocated | |
693 | */ | |
694 | ||
695 | static void sm501_device_release(struct device *dev) | |
696 | { | |
697 | kfree(to_sm_device(to_platform_device(dev))); | |
698 | } | |
699 | ||
700 | /* sm501_create_subdev | |
701 | * | |
702 | * Create a skeleton platform device with resources for passing to a | |
703 | * sub-driver | |
704 | */ | |
705 | ||
706 | static struct platform_device * | |
61711f8f MD |
707 | sm501_create_subdev(struct sm501_devdata *sm, char *name, |
708 | unsigned int res_count, unsigned int platform_data_size) | |
b6d6454f BD |
709 | { |
710 | struct sm501_device *smdev; | |
711 | ||
712 | smdev = kzalloc(sizeof(struct sm501_device) + | |
61711f8f MD |
713 | (sizeof(struct resource) * res_count) + |
714 | platform_data_size, GFP_KERNEL); | |
b6d6454f BD |
715 | if (!smdev) |
716 | return NULL; | |
717 | ||
718 | smdev->pdev.dev.release = sm501_device_release; | |
719 | ||
720 | smdev->pdev.name = name; | |
721 | smdev->pdev.id = sm->pdev_id; | |
b6d6454f BD |
722 | smdev->pdev.dev.parent = sm->dev; |
723 | ||
61711f8f MD |
724 | if (res_count) { |
725 | smdev->pdev.resource = (struct resource *)(smdev+1); | |
726 | smdev->pdev.num_resources = res_count; | |
727 | } | |
728 | if (platform_data_size) | |
729 | smdev->pdev.dev.platform_data = (void *)(smdev+1); | |
730 | ||
b6d6454f BD |
731 | return &smdev->pdev; |
732 | } | |
733 | ||
734 | /* sm501_register_device | |
735 | * | |
736 | * Register a platform device created with sm501_create_subdev() | |
737 | */ | |
738 | ||
739 | static int sm501_register_device(struct sm501_devdata *sm, | |
740 | struct platform_device *pdev) | |
741 | { | |
742 | struct sm501_device *smdev = to_sm_device(pdev); | |
743 | int ptr; | |
744 | int ret; | |
745 | ||
746 | for (ptr = 0; ptr < pdev->num_resources; ptr++) { | |
80e74a80 | 747 | printk(KERN_DEBUG "%s[%d] flags %08lx: %08llx..%08llx\n", |
b6d6454f BD |
748 | pdev->name, ptr, |
749 | pdev->resource[ptr].flags, | |
750 | (unsigned long long)pdev->resource[ptr].start, | |
751 | (unsigned long long)pdev->resource[ptr].end); | |
752 | } | |
753 | ||
754 | ret = platform_device_register(pdev); | |
755 | ||
756 | if (ret >= 0) { | |
757 | dev_dbg(sm->dev, "registered %s\n", pdev->name); | |
758 | list_add_tail(&smdev->list, &sm->devices); | |
759 | } else | |
760 | dev_err(sm->dev, "error registering %s (%d)\n", | |
761 | pdev->name, ret); | |
762 | ||
763 | return ret; | |
764 | } | |
765 | ||
766 | /* sm501_create_subio | |
767 | * | |
768 | * Fill in an IO resource for a sub device | |
769 | */ | |
770 | ||
771 | static void sm501_create_subio(struct sm501_devdata *sm, | |
772 | struct resource *res, | |
773 | resource_size_t offs, | |
774 | resource_size_t size) | |
775 | { | |
776 | res->flags = IORESOURCE_MEM; | |
777 | res->parent = sm->io_res; | |
778 | res->start = sm->io_res->start + offs; | |
779 | res->end = res->start + size - 1; | |
780 | } | |
781 | ||
782 | /* sm501_create_mem | |
783 | * | |
784 | * Fill in an MEM resource for a sub device | |
785 | */ | |
786 | ||
787 | static void sm501_create_mem(struct sm501_devdata *sm, | |
788 | struct resource *res, | |
789 | resource_size_t *offs, | |
790 | resource_size_t size) | |
791 | { | |
792 | *offs -= size; /* adjust memory size */ | |
793 | ||
794 | res->flags = IORESOURCE_MEM; | |
795 | res->parent = sm->mem_res; | |
796 | res->start = sm->mem_res->start + *offs; | |
797 | res->end = res->start + size - 1; | |
798 | } | |
799 | ||
800 | /* sm501_create_irq | |
801 | * | |
802 | * Fill in an IRQ resource for a sub device | |
803 | */ | |
804 | ||
805 | static void sm501_create_irq(struct sm501_devdata *sm, | |
806 | struct resource *res) | |
807 | { | |
808 | res->flags = IORESOURCE_IRQ; | |
809 | res->parent = NULL; | |
810 | res->start = res->end = sm->irq; | |
811 | } | |
812 | ||
813 | static int sm501_register_usbhost(struct sm501_devdata *sm, | |
814 | resource_size_t *mem_avail) | |
815 | { | |
816 | struct platform_device *pdev; | |
817 | ||
61711f8f | 818 | pdev = sm501_create_subdev(sm, "sm501-usb", 3, 0); |
b6d6454f BD |
819 | if (!pdev) |
820 | return -ENOMEM; | |
821 | ||
822 | sm501_create_subio(sm, &pdev->resource[0], 0x40000, 0x20000); | |
823 | sm501_create_mem(sm, &pdev->resource[1], mem_avail, 256*1024); | |
824 | sm501_create_irq(sm, &pdev->resource[2]); | |
825 | ||
826 | return sm501_register_device(sm, pdev); | |
827 | } | |
828 | ||
61711f8f MD |
829 | static void sm501_setup_uart_data(struct sm501_devdata *sm, |
830 | struct plat_serial8250_port *uart_data, | |
831 | unsigned int offset) | |
832 | { | |
833 | uart_data->membase = sm->regs + offset; | |
834 | uart_data->mapbase = sm->io_res->start + offset; | |
835 | uart_data->iotype = UPIO_MEM; | |
836 | uart_data->irq = sm->irq; | |
837 | uart_data->flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ; | |
838 | uart_data->regshift = 2; | |
839 | uart_data->uartclk = (9600 * 16); | |
840 | } | |
841 | ||
842 | static int sm501_register_uart(struct sm501_devdata *sm, int devices) | |
843 | { | |
844 | struct platform_device *pdev; | |
845 | struct plat_serial8250_port *uart_data; | |
846 | ||
847 | pdev = sm501_create_subdev(sm, "serial8250", 0, | |
848 | sizeof(struct plat_serial8250_port) * 3); | |
849 | if (!pdev) | |
850 | return -ENOMEM; | |
851 | ||
852 | uart_data = pdev->dev.platform_data; | |
853 | ||
854 | if (devices & SM501_USE_UART0) { | |
855 | sm501_setup_uart_data(sm, uart_data++, 0x30000); | |
856 | sm501_unit_power(sm->dev, SM501_GATE_UART0, 1); | |
857 | sm501_modify_reg(sm->dev, SM501_IRQ_MASK, 1 << 12, 0); | |
858 | sm501_modify_reg(sm->dev, SM501_GPIO63_32_CONTROL, 0x01e0, 0); | |
859 | } | |
860 | if (devices & SM501_USE_UART1) { | |
861 | sm501_setup_uart_data(sm, uart_data++, 0x30020); | |
862 | sm501_unit_power(sm->dev, SM501_GATE_UART1, 1); | |
863 | sm501_modify_reg(sm->dev, SM501_IRQ_MASK, 1 << 13, 0); | |
864 | sm501_modify_reg(sm->dev, SM501_GPIO63_32_CONTROL, 0x1e00, 0); | |
865 | } | |
866 | ||
867 | pdev->id = PLAT8250_DEV_SM501; | |
868 | ||
869 | return sm501_register_device(sm, pdev); | |
870 | } | |
871 | ||
b6d6454f BD |
872 | static int sm501_register_display(struct sm501_devdata *sm, |
873 | resource_size_t *mem_avail) | |
874 | { | |
875 | struct platform_device *pdev; | |
876 | ||
61711f8f | 877 | pdev = sm501_create_subdev(sm, "sm501-fb", 4, 0); |
b6d6454f BD |
878 | if (!pdev) |
879 | return -ENOMEM; | |
880 | ||
881 | sm501_create_subio(sm, &pdev->resource[0], 0x80000, 0x10000); | |
882 | sm501_create_subio(sm, &pdev->resource[1], 0x100000, 0x50000); | |
883 | sm501_create_mem(sm, &pdev->resource[2], mem_avail, *mem_avail); | |
884 | sm501_create_irq(sm, &pdev->resource[3]); | |
885 | ||
886 | return sm501_register_device(sm, pdev); | |
887 | } | |
888 | ||
f61be273 BD |
889 | #ifdef CONFIG_MFD_SM501_GPIO |
890 | ||
891 | static inline struct sm501_gpio_chip *to_sm501_gpio(struct gpio_chip *gc) | |
892 | { | |
893 | return container_of(gc, struct sm501_gpio_chip, gpio); | |
894 | } | |
895 | ||
896 | static inline struct sm501_devdata *sm501_gpio_to_dev(struct sm501_gpio *gpio) | |
897 | { | |
898 | return container_of(gpio, struct sm501_devdata, gpio); | |
899 | } | |
900 | ||
901 | static int sm501_gpio_get(struct gpio_chip *chip, unsigned offset) | |
902 | ||
903 | { | |
904 | struct sm501_gpio_chip *smgpio = to_sm501_gpio(chip); | |
905 | unsigned long result; | |
906 | ||
907 | result = readl(smgpio->regbase + SM501_GPIO_DATA_LOW); | |
908 | result >>= offset; | |
909 | ||
910 | return result & 1UL; | |
911 | } | |
912 | ||
98325f8f BD |
913 | static void sm501_gpio_ensure_gpio(struct sm501_gpio_chip *smchip, |
914 | unsigned long bit) | |
915 | { | |
916 | unsigned long ctrl; | |
917 | ||
918 | /* check and modify if this pin is not set as gpio. */ | |
919 | ||
920 | if (readl(smchip->control) & bit) { | |
921 | dev_info(sm501_gpio_to_dev(smchip->ourgpio)->dev, | |
922 | "changing mode of gpio, bit %08lx\n", bit); | |
923 | ||
924 | ctrl = readl(smchip->control); | |
925 | ctrl &= ~bit; | |
926 | writel(ctrl, smchip->control); | |
927 | ||
928 | sm501_sync_regs(sm501_gpio_to_dev(smchip->ourgpio)); | |
929 | } | |
930 | } | |
931 | ||
f61be273 BD |
932 | static void sm501_gpio_set(struct gpio_chip *chip, unsigned offset, int value) |
933 | ||
934 | { | |
935 | struct sm501_gpio_chip *smchip = to_sm501_gpio(chip); | |
936 | struct sm501_gpio *smgpio = smchip->ourgpio; | |
937 | unsigned long bit = 1 << offset; | |
938 | void __iomem *regs = smchip->regbase; | |
939 | unsigned long save; | |
940 | unsigned long val; | |
941 | ||
942 | dev_dbg(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d)\n", | |
943 | __func__, chip, offset); | |
944 | ||
945 | spin_lock_irqsave(&smgpio->lock, save); | |
946 | ||
947 | val = readl(regs + SM501_GPIO_DATA_LOW) & ~bit; | |
948 | if (value) | |
949 | val |= bit; | |
950 | writel(val, regs); | |
951 | ||
952 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
98325f8f BD |
953 | sm501_gpio_ensure_gpio(smchip, bit); |
954 | ||
f61be273 BD |
955 | spin_unlock_irqrestore(&smgpio->lock, save); |
956 | } | |
957 | ||
958 | static int sm501_gpio_input(struct gpio_chip *chip, unsigned offset) | |
959 | { | |
960 | struct sm501_gpio_chip *smchip = to_sm501_gpio(chip); | |
961 | struct sm501_gpio *smgpio = smchip->ourgpio; | |
962 | void __iomem *regs = smchip->regbase; | |
963 | unsigned long bit = 1 << offset; | |
964 | unsigned long save; | |
965 | unsigned long ddr; | |
966 | ||
98325f8f BD |
967 | dev_dbg(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d)\n", |
968 | __func__, chip, offset); | |
f61be273 BD |
969 | |
970 | spin_lock_irqsave(&smgpio->lock, save); | |
971 | ||
972 | ddr = readl(regs + SM501_GPIO_DDR_LOW); | |
973 | writel(ddr & ~bit, regs + SM501_GPIO_DDR_LOW); | |
974 | ||
975 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
98325f8f BD |
976 | sm501_gpio_ensure_gpio(smchip, bit); |
977 | ||
f61be273 BD |
978 | spin_unlock_irqrestore(&smgpio->lock, save); |
979 | ||
980 | return 0; | |
981 | } | |
982 | ||
983 | static int sm501_gpio_output(struct gpio_chip *chip, | |
984 | unsigned offset, int value) | |
985 | { | |
986 | struct sm501_gpio_chip *smchip = to_sm501_gpio(chip); | |
987 | struct sm501_gpio *smgpio = smchip->ourgpio; | |
988 | unsigned long bit = 1 << offset; | |
989 | void __iomem *regs = smchip->regbase; | |
990 | unsigned long save; | |
991 | unsigned long val; | |
992 | unsigned long ddr; | |
993 | ||
994 | dev_dbg(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d,%d)\n", | |
995 | __func__, chip, offset, value); | |
996 | ||
997 | spin_lock_irqsave(&smgpio->lock, save); | |
998 | ||
999 | val = readl(regs + SM501_GPIO_DATA_LOW); | |
1000 | if (value) | |
1001 | val |= bit; | |
1002 | else | |
1003 | val &= ~bit; | |
1004 | writel(val, regs); | |
1005 | ||
1006 | ddr = readl(regs + SM501_GPIO_DDR_LOW); | |
1007 | writel(ddr | bit, regs + SM501_GPIO_DDR_LOW); | |
1008 | ||
1009 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
1010 | writel(val, regs + SM501_GPIO_DATA_LOW); | |
1011 | ||
1012 | sm501_sync_regs(sm501_gpio_to_dev(smgpio)); | |
1013 | spin_unlock_irqrestore(&smgpio->lock, save); | |
1014 | ||
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | static struct gpio_chip gpio_chip_template = { | |
1019 | .ngpio = 32, | |
1020 | .direction_input = sm501_gpio_input, | |
1021 | .direction_output = sm501_gpio_output, | |
1022 | .set = sm501_gpio_set, | |
1023 | .get = sm501_gpio_get, | |
1024 | }; | |
1025 | ||
1026 | static int __devinit sm501_gpio_register_chip(struct sm501_devdata *sm, | |
1027 | struct sm501_gpio *gpio, | |
1028 | struct sm501_gpio_chip *chip) | |
1029 | { | |
1030 | struct sm501_platdata *pdata = sm->platdata; | |
1031 | struct gpio_chip *gchip = &chip->gpio; | |
60e540d6 | 1032 | int base = pdata->gpio_base; |
f61be273 | 1033 | |
28130bea | 1034 | chip->gpio = gpio_chip_template; |
f61be273 BD |
1035 | |
1036 | if (chip == &gpio->high) { | |
60e540d6 AP |
1037 | if (base > 0) |
1038 | base += 32; | |
f61be273 | 1039 | chip->regbase = gpio->regs + SM501_GPIO_DATA_HIGH; |
98325f8f | 1040 | chip->control = sm->regs + SM501_GPIO63_32_CONTROL; |
f61be273 BD |
1041 | gchip->label = "SM501-HIGH"; |
1042 | } else { | |
1043 | chip->regbase = gpio->regs + SM501_GPIO_DATA_LOW; | |
98325f8f | 1044 | chip->control = sm->regs + SM501_GPIO31_0_CONTROL; |
f61be273 BD |
1045 | gchip->label = "SM501-LOW"; |
1046 | } | |
1047 | ||
1048 | gchip->base = base; | |
1049 | chip->ourgpio = gpio; | |
1050 | ||
1051 | return gpiochip_add(gchip); | |
1052 | } | |
1053 | ||
dcd9651e | 1054 | static int __devinit sm501_register_gpio(struct sm501_devdata *sm) |
f61be273 BD |
1055 | { |
1056 | struct sm501_gpio *gpio = &sm->gpio; | |
1057 | resource_size_t iobase = sm->io_res->start + SM501_GPIO; | |
1058 | int ret; | |
1059 | int tmp; | |
1060 | ||
1061 | dev_dbg(sm->dev, "registering gpio block %08llx\n", | |
1062 | (unsigned long long)iobase); | |
1063 | ||
1064 | spin_lock_init(&gpio->lock); | |
1065 | ||
1066 | gpio->regs_res = request_mem_region(iobase, 0x20, "sm501-gpio"); | |
1067 | if (gpio->regs_res == NULL) { | |
1068 | dev_err(sm->dev, "gpio: failed to request region\n"); | |
1069 | return -ENXIO; | |
1070 | } | |
1071 | ||
1072 | gpio->regs = ioremap(iobase, 0x20); | |
1073 | if (gpio->regs == NULL) { | |
1074 | dev_err(sm->dev, "gpio: failed to remap registers\n"); | |
1075 | ret = -ENXIO; | |
28130bea | 1076 | goto err_claimed; |
f61be273 BD |
1077 | } |
1078 | ||
1079 | /* Register both our chips. */ | |
1080 | ||
1081 | ret = sm501_gpio_register_chip(sm, gpio, &gpio->low); | |
1082 | if (ret) { | |
1083 | dev_err(sm->dev, "failed to add low chip\n"); | |
1084 | goto err_mapped; | |
1085 | } | |
1086 | ||
1087 | ret = sm501_gpio_register_chip(sm, gpio, &gpio->high); | |
1088 | if (ret) { | |
1089 | dev_err(sm->dev, "failed to add high chip\n"); | |
1090 | goto err_low_chip; | |
1091 | } | |
1092 | ||
1093 | gpio->registered = 1; | |
1094 | ||
1095 | return 0; | |
1096 | ||
1097 | err_low_chip: | |
1098 | tmp = gpiochip_remove(&gpio->low.gpio); | |
1099 | if (tmp) { | |
1100 | dev_err(sm->dev, "cannot remove low chip, cannot tidy up\n"); | |
1101 | return ret; | |
1102 | } | |
1103 | ||
1104 | err_mapped: | |
28130bea BD |
1105 | iounmap(gpio->regs); |
1106 | ||
1107 | err_claimed: | |
f61be273 BD |
1108 | release_resource(gpio->regs_res); |
1109 | kfree(gpio->regs_res); | |
1110 | ||
1111 | return ret; | |
1112 | } | |
1113 | ||
1114 | static void sm501_gpio_remove(struct sm501_devdata *sm) | |
1115 | { | |
28130bea | 1116 | struct sm501_gpio *gpio = &sm->gpio; |
f61be273 BD |
1117 | int ret; |
1118 | ||
f2999209 BD |
1119 | if (!sm->gpio.registered) |
1120 | return; | |
1121 | ||
28130bea | 1122 | ret = gpiochip_remove(&gpio->low.gpio); |
f61be273 BD |
1123 | if (ret) |
1124 | dev_err(sm->dev, "cannot remove low chip, cannot tidy up\n"); | |
1125 | ||
28130bea | 1126 | ret = gpiochip_remove(&gpio->high.gpio); |
f61be273 BD |
1127 | if (ret) |
1128 | dev_err(sm->dev, "cannot remove high chip, cannot tidy up\n"); | |
28130bea BD |
1129 | |
1130 | iounmap(gpio->regs); | |
1131 | release_resource(gpio->regs_res); | |
1132 | kfree(gpio->regs_res); | |
f61be273 BD |
1133 | } |
1134 | ||
28130bea | 1135 | static inline int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin) |
42cd2366 BD |
1136 | { |
1137 | struct sm501_gpio *gpio = &sm->gpio; | |
53a9600c BD |
1138 | int base = (pin < 32) ? gpio->low.gpio.base : gpio->high.gpio.base; |
1139 | ||
1140 | return (pin % 32) + base; | |
42cd2366 | 1141 | } |
f2999209 BD |
1142 | |
1143 | static inline int sm501_gpio_isregistered(struct sm501_devdata *sm) | |
1144 | { | |
1145 | return sm->gpio.registered; | |
1146 | } | |
f61be273 | 1147 | #else |
28130bea | 1148 | static inline int sm501_register_gpio(struct sm501_devdata *sm) |
f61be273 BD |
1149 | { |
1150 | return 0; | |
1151 | } | |
1152 | ||
28130bea | 1153 | static inline void sm501_gpio_remove(struct sm501_devdata *sm) |
f61be273 BD |
1154 | { |
1155 | } | |
42cd2366 | 1156 | |
28130bea | 1157 | static inline int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin) |
42cd2366 BD |
1158 | { |
1159 | return -1; | |
1160 | } | |
f2999209 BD |
1161 | |
1162 | static inline int sm501_gpio_isregistered(struct sm501_devdata *sm) | |
1163 | { | |
1164 | return 0; | |
1165 | } | |
f61be273 BD |
1166 | #endif |
1167 | ||
42cd2366 BD |
1168 | static int sm501_register_gpio_i2c_instance(struct sm501_devdata *sm, |
1169 | struct sm501_platdata_gpio_i2c *iic) | |
1170 | { | |
1171 | struct i2c_gpio_platform_data *icd; | |
1172 | struct platform_device *pdev; | |
1173 | ||
1174 | pdev = sm501_create_subdev(sm, "i2c-gpio", 0, | |
1175 | sizeof(struct i2c_gpio_platform_data)); | |
1176 | if (!pdev) | |
1177 | return -ENOMEM; | |
1178 | ||
1179 | icd = pdev->dev.platform_data; | |
1180 | ||
1181 | /* We keep the pin_sda and pin_scl fields relative in case the | |
1182 | * same platform data is passed to >1 SM501. | |
1183 | */ | |
1184 | ||
1185 | icd->sda_pin = sm501_gpio_pin2nr(sm, iic->pin_sda); | |
1186 | icd->scl_pin = sm501_gpio_pin2nr(sm, iic->pin_scl); | |
1187 | icd->timeout = iic->timeout; | |
1188 | icd->udelay = iic->udelay; | |
1189 | ||
1190 | /* note, we can't use either of the pin numbers, as the i2c-gpio | |
1191 | * driver uses the platform.id field to generate the bus number | |
1192 | * to register with the i2c core; The i2c core doesn't have enough | |
1193 | * entries to deal with anything we currently use. | |
1194 | */ | |
1195 | ||
1196 | pdev->id = iic->bus_num; | |
1197 | ||
1198 | dev_info(sm->dev, "registering i2c-%d: sda=%d (%d), scl=%d (%d)\n", | |
1199 | iic->bus_num, | |
1200 | icd->sda_pin, iic->pin_sda, icd->scl_pin, iic->pin_scl); | |
1201 | ||
1202 | return sm501_register_device(sm, pdev); | |
1203 | } | |
1204 | ||
1205 | static int sm501_register_gpio_i2c(struct sm501_devdata *sm, | |
1206 | struct sm501_platdata *pdata) | |
1207 | { | |
1208 | struct sm501_platdata_gpio_i2c *iic = pdata->gpio_i2c; | |
1209 | int index; | |
1210 | int ret; | |
1211 | ||
1212 | for (index = 0; index < pdata->gpio_i2c_nr; index++, iic++) { | |
1213 | ret = sm501_register_gpio_i2c_instance(sm, iic); | |
1214 | if (ret < 0) | |
1215 | return ret; | |
1216 | } | |
1217 | ||
1218 | return 0; | |
1219 | } | |
1220 | ||
b6d6454f BD |
1221 | /* sm501_dbg_regs |
1222 | * | |
1223 | * Debug attribute to attach to parent device to show core registers | |
1224 | */ | |
1225 | ||
1226 | static ssize_t sm501_dbg_regs(struct device *dev, | |
1227 | struct device_attribute *attr, char *buff) | |
1228 | { | |
1229 | struct sm501_devdata *sm = dev_get_drvdata(dev) ; | |
1230 | unsigned int reg; | |
1231 | char *ptr = buff; | |
1232 | int ret; | |
1233 | ||
1234 | for (reg = 0x00; reg < 0x70; reg += 4) { | |
1235 | ret = sprintf(ptr, "%08x = %08x\n", | |
1236 | reg, readl(sm->regs + reg)); | |
1237 | ptr += ret; | |
1238 | } | |
1239 | ||
1240 | return ptr - buff; | |
1241 | } | |
1242 | ||
1243 | ||
1244 | static DEVICE_ATTR(dbg_regs, 0666, sm501_dbg_regs, NULL); | |
1245 | ||
1246 | /* sm501_init_reg | |
1247 | * | |
1248 | * Helper function for the init code to setup a register | |
5136237b BD |
1249 | * |
1250 | * clear the bits which are set in r->mask, and then set | |
1251 | * the bits set in r->set. | |
b6d6454f BD |
1252 | */ |
1253 | ||
1254 | static inline void sm501_init_reg(struct sm501_devdata *sm, | |
1255 | unsigned long reg, | |
1256 | struct sm501_reg_init *r) | |
1257 | { | |
1258 | unsigned long tmp; | |
1259 | ||
1260 | tmp = readl(sm->regs + reg); | |
b6d6454f | 1261 | tmp &= ~r->mask; |
5136237b | 1262 | tmp |= r->set; |
b6d6454f BD |
1263 | writel(tmp, sm->regs + reg); |
1264 | } | |
1265 | ||
1266 | /* sm501_init_regs | |
1267 | * | |
1268 | * Setup core register values | |
1269 | */ | |
1270 | ||
1271 | static void sm501_init_regs(struct sm501_devdata *sm, | |
1272 | struct sm501_initdata *init) | |
1273 | { | |
1274 | sm501_misc_control(sm->dev, | |
1275 | init->misc_control.set, | |
1276 | init->misc_control.mask); | |
1277 | ||
1278 | sm501_init_reg(sm, SM501_MISC_TIMING, &init->misc_timing); | |
1279 | sm501_init_reg(sm, SM501_GPIO31_0_CONTROL, &init->gpio_low); | |
1280 | sm501_init_reg(sm, SM501_GPIO63_32_CONTROL, &init->gpio_high); | |
1281 | ||
b6d6454f BD |
1282 | if (init->m1xclk) { |
1283 | dev_info(sm->dev, "setting M1XCLK to %ld\n", init->m1xclk); | |
1284 | sm501_set_clock(sm->dev, SM501_CLOCK_M1XCLK, init->m1xclk); | |
1285 | } | |
b5913bbd BD |
1286 | |
1287 | if (init->mclk) { | |
1288 | dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk); | |
1289 | sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk); | |
1290 | } | |
81906221 BD |
1291 | |
1292 | } | |
1293 | ||
1294 | /* Check the PLL sources for the M1CLK and M1XCLK | |
1295 | * | |
1296 | * If the M1CLK and M1XCLKs are not sourced from the same PLL, then | |
1297 | * there is a risk (see errata AB-5) that the SM501 will cease proper | |
1298 | * function. If this happens, then it is likely the SM501 will | |
1299 | * hang the system. | |
1300 | */ | |
1301 | ||
1302 | static int sm501_check_clocks(struct sm501_devdata *sm) | |
1303 | { | |
1304 | unsigned long pwrmode = readl(sm->regs + SM501_CURRENT_CLOCK); | |
1305 | unsigned long msrc = (pwrmode & SM501_POWERMODE_M_SRC); | |
1306 | unsigned long m1src = (pwrmode & SM501_POWERMODE_M1_SRC); | |
1307 | ||
1308 | return ((msrc == 0 && m1src != 0) || (msrc != 0 && m1src == 0)); | |
b6d6454f BD |
1309 | } |
1310 | ||
1311 | static unsigned int sm501_mem_local[] = { | |
1312 | [0] = 4*1024*1024, | |
1313 | [1] = 8*1024*1024, | |
1314 | [2] = 16*1024*1024, | |
1315 | [3] = 32*1024*1024, | |
1316 | [4] = 64*1024*1024, | |
1317 | [5] = 2*1024*1024, | |
1318 | }; | |
1319 | ||
1320 | /* sm501_init_dev | |
1321 | * | |
1322 | * Common init code for an SM501 | |
1323 | */ | |
1324 | ||
158abca5 | 1325 | static int __devinit sm501_init_dev(struct sm501_devdata *sm) |
b6d6454f | 1326 | { |
61711f8f | 1327 | struct sm501_initdata *idata; |
42cd2366 | 1328 | struct sm501_platdata *pdata; |
b6d6454f BD |
1329 | resource_size_t mem_avail; |
1330 | unsigned long dramctrl; | |
1e27dbe7 | 1331 | unsigned long devid; |
b6d6454f BD |
1332 | int ret; |
1333 | ||
1334 | mutex_init(&sm->clock_lock); | |
1335 | spin_lock_init(&sm->reg_lock); | |
1336 | ||
1337 | INIT_LIST_HEAD(&sm->devices); | |
1338 | ||
1e27dbe7 | 1339 | devid = readl(sm->regs + SM501_DEVICEID); |
b6d6454f | 1340 | |
1e27dbe7 BD |
1341 | if ((devid & SM501_DEVICEID_IDMASK) != SM501_DEVICEID_SM501) { |
1342 | dev_err(sm->dev, "incorrect device id %08lx\n", devid); | |
1343 | return -EINVAL; | |
1344 | } | |
1345 | ||
61711f8f MD |
1346 | /* disable irqs */ |
1347 | writel(0, sm->regs + SM501_IRQ_MASK); | |
1348 | ||
1e27dbe7 | 1349 | dramctrl = readl(sm->regs + SM501_DRAM_CONTROL); |
b6d6454f BD |
1350 | mem_avail = sm501_mem_local[(dramctrl >> 13) & 0x7]; |
1351 | ||
1e27dbe7 BD |
1352 | dev_info(sm->dev, "SM501 At %p: Version %08lx, %ld Mb, IRQ %d\n", |
1353 | sm->regs, devid, (unsigned long)mem_avail >> 20, sm->irq); | |
b6d6454f | 1354 | |
3149be50 VS |
1355 | sm->rev = devid & SM501_DEVICEID_REVMASK; |
1356 | ||
331d7475 | 1357 | sm501_dump_gate(sm); |
b6d6454f BD |
1358 | |
1359 | ret = device_create_file(sm->dev, &dev_attr_dbg_regs); | |
1360 | if (ret) | |
1361 | dev_err(sm->dev, "failed to create debug regs file\n"); | |
1362 | ||
1363 | sm501_dump_clk(sm); | |
1364 | ||
1365 | /* check to see if we have some device initialisation */ | |
1366 | ||
42cd2366 BD |
1367 | pdata = sm->platdata; |
1368 | idata = pdata ? pdata->init : NULL; | |
1369 | ||
61711f8f MD |
1370 | if (idata) { |
1371 | sm501_init_regs(sm, idata); | |
b6d6454f | 1372 | |
61711f8f MD |
1373 | if (idata->devices & SM501_USE_USB_HOST) |
1374 | sm501_register_usbhost(sm, &mem_avail); | |
1375 | if (idata->devices & (SM501_USE_UART0 | SM501_USE_UART1)) | |
1376 | sm501_register_uart(sm, idata->devices); | |
f61be273 BD |
1377 | if (idata->devices & SM501_USE_GPIO) |
1378 | sm501_register_gpio(sm); | |
b6d6454f BD |
1379 | } |
1380 | ||
42cd2366 | 1381 | if (pdata->gpio_i2c != NULL && pdata->gpio_i2c_nr > 0) { |
f2999209 BD |
1382 | if (!sm501_gpio_isregistered(sm)) |
1383 | dev_err(sm->dev, "no gpio available for i2c gpio.\n"); | |
42cd2366 BD |
1384 | else |
1385 | sm501_register_gpio_i2c(sm, pdata); | |
1386 | } | |
1387 | ||
81906221 BD |
1388 | ret = sm501_check_clocks(sm); |
1389 | if (ret) { | |
1390 | dev_err(sm->dev, "M1X and M clocks sourced from different " | |
1391 | "PLLs\n"); | |
1392 | return -EINVAL; | |
1393 | } | |
1394 | ||
b6d6454f BD |
1395 | /* always create a framebuffer */ |
1396 | sm501_register_display(sm, &mem_avail); | |
1397 | ||
1398 | return 0; | |
1399 | } | |
1400 | ||
158abca5 | 1401 | static int __devinit sm501_plat_probe(struct platform_device *dev) |
b6d6454f BD |
1402 | { |
1403 | struct sm501_devdata *sm; | |
7cf5244c | 1404 | int ret; |
b6d6454f BD |
1405 | |
1406 | sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL); | |
1407 | if (sm == NULL) { | |
1408 | dev_err(&dev->dev, "no memory for device data\n"); | |
7cf5244c | 1409 | ret = -ENOMEM; |
b6d6454f BD |
1410 | goto err1; |
1411 | } | |
1412 | ||
1413 | sm->dev = &dev->dev; | |
1414 | sm->pdev_id = dev->id; | |
b6d6454f BD |
1415 | sm->platdata = dev->dev.platform_data; |
1416 | ||
7cf5244c RK |
1417 | ret = platform_get_irq(dev, 0); |
1418 | if (ret < 0) { | |
b6d6454f | 1419 | dev_err(&dev->dev, "failed to get irq resource\n"); |
b6d6454f BD |
1420 | goto err_res; |
1421 | } | |
7cf5244c | 1422 | sm->irq = ret; |
b6d6454f | 1423 | |
7cf5244c RK |
1424 | sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1); |
1425 | sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
b6d6454f BD |
1426 | if (sm->io_res == NULL || sm->mem_res == NULL) { |
1427 | dev_err(&dev->dev, "failed to get IO resource\n"); | |
7cf5244c | 1428 | ret = -ENOENT; |
b6d6454f BD |
1429 | goto err_res; |
1430 | } | |
1431 | ||
1432 | sm->regs_claim = request_mem_region(sm->io_res->start, | |
a5300dcb | 1433 | 0x100, "sm501"); |
b6d6454f BD |
1434 | |
1435 | if (sm->regs_claim == NULL) { | |
1436 | dev_err(&dev->dev, "cannot claim registers\n"); | |
7cf5244c | 1437 | ret = -EBUSY; |
b6d6454f BD |
1438 | goto err_res; |
1439 | } | |
1440 | ||
1441 | platform_set_drvdata(dev, sm); | |
1442 | ||
311e54c0 | 1443 | sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res)); |
b6d6454f BD |
1444 | |
1445 | if (sm->regs == NULL) { | |
1446 | dev_err(&dev->dev, "cannot remap registers\n"); | |
7cf5244c | 1447 | ret = -EIO; |
b6d6454f BD |
1448 | goto err_claim; |
1449 | } | |
1450 | ||
1451 | return sm501_init_dev(sm); | |
1452 | ||
1453 | err_claim: | |
1454 | release_resource(sm->regs_claim); | |
1455 | kfree(sm->regs_claim); | |
1456 | err_res: | |
1457 | kfree(sm); | |
1458 | err1: | |
7cf5244c | 1459 | return ret; |
b6d6454f BD |
1460 | |
1461 | } | |
1462 | ||
331d7475 | 1463 | #ifdef CONFIG_PM |
472dba7d | 1464 | |
331d7475 BD |
1465 | /* power management support */ |
1466 | ||
472dba7d BD |
1467 | static void sm501_set_power(struct sm501_devdata *sm, int on) |
1468 | { | |
1469 | struct sm501_platdata *pd = sm->platdata; | |
1470 | ||
1471 | if (pd == NULL) | |
1472 | return; | |
1473 | ||
1474 | if (pd->get_power) { | |
1475 | if (pd->get_power(sm->dev) == on) { | |
1476 | dev_dbg(sm->dev, "is already %d\n", on); | |
1477 | return; | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | if (pd->set_power) { | |
1482 | dev_dbg(sm->dev, "setting power to %d\n", on); | |
1483 | ||
1484 | pd->set_power(sm->dev, on); | |
1485 | sm501_mdelay(sm, 10); | |
1486 | } | |
1487 | } | |
1488 | ||
331d7475 BD |
1489 | static int sm501_plat_suspend(struct platform_device *pdev, pm_message_t state) |
1490 | { | |
1491 | struct sm501_devdata *sm = platform_get_drvdata(pdev); | |
1492 | ||
1493 | sm->in_suspend = 1; | |
1494 | sm->pm_misc = readl(sm->regs + SM501_MISC_CONTROL); | |
1495 | ||
1496 | sm501_dump_regs(sm); | |
472dba7d BD |
1497 | |
1498 | if (sm->platdata) { | |
1499 | if (sm->platdata->flags & SM501_FLAG_SUSPEND_OFF) | |
1500 | sm501_set_power(sm, 0); | |
1501 | } | |
1502 | ||
331d7475 BD |
1503 | return 0; |
1504 | } | |
1505 | ||
1506 | static int sm501_plat_resume(struct platform_device *pdev) | |
1507 | { | |
1508 | struct sm501_devdata *sm = platform_get_drvdata(pdev); | |
1509 | ||
472dba7d BD |
1510 | sm501_set_power(sm, 1); |
1511 | ||
331d7475 BD |
1512 | sm501_dump_regs(sm); |
1513 | sm501_dump_gate(sm); | |
1514 | sm501_dump_clk(sm); | |
1515 | ||
1516 | /* check to see if we are in the same state as when suspended */ | |
1517 | ||
1518 | if (readl(sm->regs + SM501_MISC_CONTROL) != sm->pm_misc) { | |
1519 | dev_info(sm->dev, "SM501_MISC_CONTROL changed over sleep\n"); | |
1520 | writel(sm->pm_misc, sm->regs + SM501_MISC_CONTROL); | |
1521 | ||
1522 | /* our suspend causes the controller state to change, | |
1523 | * either by something attempting setup, power loss, | |
1524 | * or an external reset event on power change */ | |
1525 | ||
1526 | if (sm->platdata && sm->platdata->init) { | |
1527 | sm501_init_regs(sm, sm->platdata->init); | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | /* dump our state from resume */ | |
1532 | ||
1533 | sm501_dump_regs(sm); | |
1534 | sm501_dump_clk(sm); | |
1535 | ||
1536 | sm->in_suspend = 0; | |
1537 | ||
1538 | return 0; | |
1539 | } | |
1540 | #else | |
1541 | #define sm501_plat_suspend NULL | |
1542 | #define sm501_plat_resume NULL | |
1543 | #endif | |
1544 | ||
b6d6454f BD |
1545 | /* Initialisation data for PCI devices */ |
1546 | ||
1547 | static struct sm501_initdata sm501_pci_initdata = { | |
1548 | .gpio_high = { | |
1549 | .set = 0x3F000000, /* 24bit panel */ | |
1550 | .mask = 0x0, | |
1551 | }, | |
1552 | .misc_timing = { | |
1553 | .set = 0x010100, /* SDRAM timing */ | |
1554 | .mask = 0x1F1F00, | |
1555 | }, | |
1556 | .misc_control = { | |
1557 | .set = SM501_MISC_PNL_24BIT, | |
1558 | .mask = 0, | |
1559 | }, | |
1560 | ||
1561 | .devices = SM501_USE_ALL, | |
81906221 BD |
1562 | |
1563 | /* Errata AB-3 says that 72MHz is the fastest available | |
1564 | * for 33MHZ PCI with proper bus-mastering operation */ | |
1565 | ||
1566 | .mclk = 72 * MHZ, | |
1567 | .m1xclk = 144 * MHZ, | |
b6d6454f BD |
1568 | }; |
1569 | ||
1570 | static struct sm501_platdata_fbsub sm501_pdata_fbsub = { | |
1571 | .flags = (SM501FB_FLAG_USE_INIT_MODE | | |
1572 | SM501FB_FLAG_USE_HWCURSOR | | |
1573 | SM501FB_FLAG_USE_HWACCEL | | |
1574 | SM501FB_FLAG_DISABLE_AT_EXIT), | |
1575 | }; | |
1576 | ||
1577 | static struct sm501_platdata_fb sm501_fb_pdata = { | |
1578 | .fb_route = SM501_FB_OWN, | |
1579 | .fb_crt = &sm501_pdata_fbsub, | |
1580 | .fb_pnl = &sm501_pdata_fbsub, | |
1581 | }; | |
1582 | ||
1583 | static struct sm501_platdata sm501_pci_platdata = { | |
1584 | .init = &sm501_pci_initdata, | |
1585 | .fb = &sm501_fb_pdata, | |
60e540d6 | 1586 | .gpio_base = -1, |
b6d6454f BD |
1587 | }; |
1588 | ||
158abca5 AD |
1589 | static int __devinit sm501_pci_probe(struct pci_dev *dev, |
1590 | const struct pci_device_id *id) | |
b6d6454f BD |
1591 | { |
1592 | struct sm501_devdata *sm; | |
1593 | int err; | |
1594 | ||
1595 | sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL); | |
1596 | if (sm == NULL) { | |
1597 | dev_err(&dev->dev, "no memory for device data\n"); | |
1598 | err = -ENOMEM; | |
1599 | goto err1; | |
1600 | } | |
1601 | ||
1602 | /* set a default set of platform data */ | |
1603 | dev->dev.platform_data = sm->platdata = &sm501_pci_platdata; | |
1604 | ||
1605 | /* set a hopefully unique id for our child platform devices */ | |
1606 | sm->pdev_id = 32 + dev->devfn; | |
1607 | ||
1608 | pci_set_drvdata(dev, sm); | |
1609 | ||
1610 | err = pci_enable_device(dev); | |
1611 | if (err) { | |
1612 | dev_err(&dev->dev, "cannot enable device\n"); | |
1613 | goto err2; | |
1614 | } | |
1615 | ||
1616 | sm->dev = &dev->dev; | |
1617 | sm->irq = dev->irq; | |
1618 | ||
1619 | #ifdef __BIG_ENDIAN | |
1620 | /* if the system is big-endian, we most probably have a | |
1621 | * translation in the IO layer making the PCI bus little endian | |
1622 | * so make the framebuffer swapped pixels */ | |
1623 | ||
1624 | sm501_fb_pdata.flags |= SM501_FBPD_SWAP_FB_ENDIAN; | |
1625 | #endif | |
1626 | ||
1627 | /* check our resources */ | |
1628 | ||
1629 | if (!(pci_resource_flags(dev, 0) & IORESOURCE_MEM)) { | |
1630 | dev_err(&dev->dev, "region #0 is not memory?\n"); | |
1631 | err = -EINVAL; | |
1632 | goto err3; | |
1633 | } | |
1634 | ||
1635 | if (!(pci_resource_flags(dev, 1) & IORESOURCE_MEM)) { | |
1636 | dev_err(&dev->dev, "region #1 is not memory?\n"); | |
1637 | err = -EINVAL; | |
1638 | goto err3; | |
1639 | } | |
1640 | ||
1641 | /* make our resources ready for sharing */ | |
1642 | ||
1643 | sm->io_res = &dev->resource[1]; | |
1644 | sm->mem_res = &dev->resource[0]; | |
1645 | ||
1646 | sm->regs_claim = request_mem_region(sm->io_res->start, | |
a5300dcb | 1647 | 0x100, "sm501"); |
b6d6454f BD |
1648 | if (sm->regs_claim == NULL) { |
1649 | dev_err(&dev->dev, "cannot claim registers\n"); | |
1650 | err= -EBUSY; | |
1651 | goto err3; | |
1652 | } | |
1653 | ||
7ab18995 | 1654 | sm->regs = pci_ioremap_bar(dev, 1); |
b6d6454f BD |
1655 | |
1656 | if (sm->regs == NULL) { | |
1657 | dev_err(&dev->dev, "cannot remap registers\n"); | |
1658 | err = -EIO; | |
1659 | goto err4; | |
1660 | } | |
1661 | ||
1662 | sm501_init_dev(sm); | |
1663 | return 0; | |
1664 | ||
1665 | err4: | |
1666 | release_resource(sm->regs_claim); | |
1667 | kfree(sm->regs_claim); | |
1668 | err3: | |
1669 | pci_disable_device(dev); | |
1670 | err2: | |
1671 | pci_set_drvdata(dev, NULL); | |
1672 | kfree(sm); | |
1673 | err1: | |
1674 | return err; | |
1675 | } | |
1676 | ||
1677 | static void sm501_remove_sub(struct sm501_devdata *sm, | |
1678 | struct sm501_device *smdev) | |
1679 | { | |
1680 | list_del(&smdev->list); | |
1681 | platform_device_unregister(&smdev->pdev); | |
1682 | } | |
1683 | ||
1684 | static void sm501_dev_remove(struct sm501_devdata *sm) | |
1685 | { | |
1686 | struct sm501_device *smdev, *tmp; | |
1687 | ||
1688 | list_for_each_entry_safe(smdev, tmp, &sm->devices, list) | |
1689 | sm501_remove_sub(sm, smdev); | |
1690 | ||
1691 | device_remove_file(sm->dev, &dev_attr_dbg_regs); | |
f61be273 | 1692 | |
f2999209 | 1693 | sm501_gpio_remove(sm); |
b6d6454f BD |
1694 | } |
1695 | ||
158abca5 | 1696 | static void __devexit sm501_pci_remove(struct pci_dev *dev) |
b6d6454f BD |
1697 | { |
1698 | struct sm501_devdata *sm = pci_get_drvdata(dev); | |
1699 | ||
1700 | sm501_dev_remove(sm); | |
1701 | iounmap(sm->regs); | |
1702 | ||
1703 | release_resource(sm->regs_claim); | |
1704 | kfree(sm->regs_claim); | |
1705 | ||
1706 | pci_set_drvdata(dev, NULL); | |
1707 | pci_disable_device(dev); | |
1708 | } | |
1709 | ||
1710 | static int sm501_plat_remove(struct platform_device *dev) | |
1711 | { | |
1712 | struct sm501_devdata *sm = platform_get_drvdata(dev); | |
1713 | ||
1714 | sm501_dev_remove(sm); | |
1715 | iounmap(sm->regs); | |
1716 | ||
1717 | release_resource(sm->regs_claim); | |
1718 | kfree(sm->regs_claim); | |
1719 | ||
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | static struct pci_device_id sm501_pci_tbl[] = { | |
1724 | { 0x126f, 0x0501, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
1725 | { 0, }, | |
1726 | }; | |
1727 | ||
1728 | MODULE_DEVICE_TABLE(pci, sm501_pci_tbl); | |
1729 | ||
158abca5 | 1730 | static struct pci_driver sm501_pci_driver = { |
b6d6454f BD |
1731 | .name = "sm501", |
1732 | .id_table = sm501_pci_tbl, | |
1733 | .probe = sm501_pci_probe, | |
158abca5 | 1734 | .remove = __devexit_p(sm501_pci_remove), |
b6d6454f BD |
1735 | }; |
1736 | ||
4f46d6e7 KS |
1737 | MODULE_ALIAS("platform:sm501"); |
1738 | ||
158abca5 | 1739 | static struct platform_driver sm501_plat_driver = { |
b6d6454f BD |
1740 | .driver = { |
1741 | .name = "sm501", | |
1742 | .owner = THIS_MODULE, | |
1743 | }, | |
1744 | .probe = sm501_plat_probe, | |
1745 | .remove = sm501_plat_remove, | |
331d7475 BD |
1746 | .suspend = sm501_plat_suspend, |
1747 | .resume = sm501_plat_resume, | |
b6d6454f BD |
1748 | }; |
1749 | ||
1750 | static int __init sm501_base_init(void) | |
1751 | { | |
158abca5 AD |
1752 | platform_driver_register(&sm501_plat_driver); |
1753 | return pci_register_driver(&sm501_pci_driver); | |
b6d6454f BD |
1754 | } |
1755 | ||
1756 | static void __exit sm501_base_exit(void) | |
1757 | { | |
158abca5 AD |
1758 | platform_driver_unregister(&sm501_plat_driver); |
1759 | pci_unregister_driver(&sm501_pci_driver); | |
b6d6454f BD |
1760 | } |
1761 | ||
1762 | module_init(sm501_base_init); | |
1763 | module_exit(sm501_base_exit); | |
1764 | ||
1765 | MODULE_DESCRIPTION("SM501 Core Driver"); | |
1766 | MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>, Vincent Sanders"); | |
1767 | MODULE_LICENSE("GPL v2"); |