Warning: That file was not part of the compilation database. It may have many parsing errors.
1 | // SPDX-License-Identifier: GPL-2.0 |
---|---|
2 | /* |
3 | * Device driver for the PMU in Apple PowerBooks and PowerMacs. |
4 | * |
5 | * The VIA (versatile interface adapter) interfaces to the PMU, |
6 | * a 6805 microprocessor core whose primary function is to control |
7 | * battery charging and system power on the PowerBook 3400 and 2400. |
8 | * The PMU also controls the ADB (Apple Desktop Bus) which connects |
9 | * to the keyboard and mouse, as well as the non-volatile RAM |
10 | * and the RTC (real time clock) chip. |
11 | * |
12 | * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi. |
13 | * Copyright (C) 2001-2002 Benjamin Herrenschmidt |
14 | * Copyright (C) 2006-2007 Johannes Berg |
15 | * |
16 | * THIS DRIVER IS BECOMING A TOTAL MESS ! |
17 | * - Cleanup atomically disabling reply to PMU events after |
18 | * a sleep or a freq. switch |
19 | * |
20 | */ |
21 | #include <stdarg.h> |
22 | #include <linux/mutex.h> |
23 | #include <linux/types.h> |
24 | #include <linux/errno.h> |
25 | #include <linux/kernel.h> |
26 | #include <linux/delay.h> |
27 | #include <linux/sched/signal.h> |
28 | #include <linux/miscdevice.h> |
29 | #include <linux/blkdev.h> |
30 | #include <linux/pci.h> |
31 | #include <linux/slab.h> |
32 | #include <linux/poll.h> |
33 | #include <linux/adb.h> |
34 | #include <linux/pmu.h> |
35 | #include <linux/cuda.h> |
36 | #include <linux/module.h> |
37 | #include <linux/spinlock.h> |
38 | #include <linux/pm.h> |
39 | #include <linux/proc_fs.h> |
40 | #include <linux/seq_file.h> |
41 | #include <linux/init.h> |
42 | #include <linux/interrupt.h> |
43 | #include <linux/device.h> |
44 | #include <linux/syscore_ops.h> |
45 | #include <linux/freezer.h> |
46 | #include <linux/syscalls.h> |
47 | #include <linux/suspend.h> |
48 | #include <linux/cpu.h> |
49 | #include <linux/compat.h> |
50 | #include <linux/of_address.h> |
51 | #include <linux/of_irq.h> |
52 | #include <linux/uaccess.h> |
53 | #include <asm/machdep.h> |
54 | #include <asm/io.h> |
55 | #include <asm/pgtable.h> |
56 | #include <asm/sections.h> |
57 | #include <asm/irq.h> |
58 | #ifdef CONFIG_PPC_PMAC |
59 | #include <asm/pmac_feature.h> |
60 | #include <asm/pmac_pfunc.h> |
61 | #include <asm/pmac_low_i2c.h> |
62 | #include <asm/prom.h> |
63 | #include <asm/mmu_context.h> |
64 | #include <asm/cputable.h> |
65 | #include <asm/time.h> |
66 | #include <asm/backlight.h> |
67 | #else |
68 | #include <asm/macintosh.h> |
69 | #include <asm/macints.h> |
70 | #include <asm/mac_via.h> |
71 | #endif |
72 | |
73 | #include "via-pmu-event.h" |
74 | |
75 | /* Some compile options */ |
76 | #undef DEBUG_SLEEP |
77 | |
78 | /* Misc minor number allocated for /dev/pmu */ |
79 | #define PMU_MINOR 154 |
80 | |
81 | /* How many iterations between battery polls */ |
82 | #define BATTERY_POLLING_COUNT 2 |
83 | |
84 | static DEFINE_MUTEX(pmu_info_proc_mutex); |
85 | |
86 | /* VIA registers - spaced 0x200 bytes apart */ |
87 | #define RS 0x200 /* skip between registers */ |
88 | #define B 0 /* B-side data */ |
89 | #define A RS /* A-side data */ |
90 | #define DIRB (2*RS) /* B-side direction (1=output) */ |
91 | #define DIRA (3*RS) /* A-side direction (1=output) */ |
92 | #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */ |
93 | #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */ |
94 | #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */ |
95 | #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */ |
96 | #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */ |
97 | #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */ |
98 | #define SR (10*RS) /* Shift register */ |
99 | #define ACR (11*RS) /* Auxiliary control register */ |
100 | #define PCR (12*RS) /* Peripheral control register */ |
101 | #define IFR (13*RS) /* Interrupt flag register */ |
102 | #define IER (14*RS) /* Interrupt enable register */ |
103 | #define ANH (15*RS) /* A-side data, no handshake */ |
104 | |
105 | /* Bits in B data register: both active low */ |
106 | #ifdef CONFIG_PPC_PMAC |
107 | #define TACK 0x08 /* Transfer acknowledge (input) */ |
108 | #define TREQ 0x10 /* Transfer request (output) */ |
109 | #else |
110 | #define TACK 0x02 |
111 | #define TREQ 0x04 |
112 | #endif |
113 | |
114 | /* Bits in ACR */ |
115 | #define SR_CTRL 0x1c /* Shift register control bits */ |
116 | #define SR_EXT 0x0c /* Shift on external clock */ |
117 | #define SR_OUT 0x10 /* Shift out if 1 */ |
118 | |
119 | /* Bits in IFR and IER */ |
120 | #define IER_SET 0x80 /* set bits in IER */ |
121 | #define IER_CLR 0 /* clear bits in IER */ |
122 | #define SR_INT 0x04 /* Shift register full/empty */ |
123 | #define CB2_INT 0x08 |
124 | #define CB1_INT 0x10 /* transition on CB1 input */ |
125 | |
126 | static volatile enum pmu_state { |
127 | uninitialized = 0, |
128 | idle, |
129 | sending, |
130 | intack, |
131 | reading, |
132 | reading_intr, |
133 | locked, |
134 | } pmu_state; |
135 | |
136 | static volatile enum int_data_state { |
137 | int_data_empty, |
138 | int_data_fill, |
139 | int_data_ready, |
140 | int_data_flush |
141 | } int_data_state[2] = { int_data_empty, int_data_empty }; |
142 | |
143 | static struct adb_request *current_req; |
144 | static struct adb_request *last_req; |
145 | static struct adb_request *req_awaiting_reply; |
146 | static unsigned char interrupt_data[2][32]; |
147 | static int interrupt_data_len[2]; |
148 | static int int_data_last; |
149 | static unsigned char *reply_ptr; |
150 | static int data_index; |
151 | static int data_len; |
152 | static volatile int adb_int_pending; |
153 | static volatile int disable_poll; |
154 | static int pmu_kind = PMU_UNKNOWN; |
155 | static int pmu_fully_inited; |
156 | static int pmu_has_adb; |
157 | #ifdef CONFIG_PPC_PMAC |
158 | static volatile unsigned char __iomem *via1; |
159 | static volatile unsigned char __iomem *via2; |
160 | static struct device_node *vias; |
161 | static struct device_node *gpio_node; |
162 | #endif |
163 | static unsigned char __iomem *gpio_reg; |
164 | static int gpio_irq = 0; |
165 | static int gpio_irq_enabled = -1; |
166 | static volatile int pmu_suspended; |
167 | static spinlock_t pmu_lock; |
168 | static u8 pmu_intr_mask; |
169 | static int pmu_version; |
170 | static int drop_interrupts; |
171 | #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) |
172 | static int option_lid_wakeup = 1; |
173 | #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */ |
174 | static unsigned long async_req_locks; |
175 | |
176 | #define NUM_IRQ_STATS 13 |
177 | static unsigned int pmu_irq_stats[NUM_IRQ_STATS]; |
178 | |
179 | static struct proc_dir_entry *proc_pmu_root; |
180 | static struct proc_dir_entry *proc_pmu_info; |
181 | static struct proc_dir_entry *proc_pmu_irqstats; |
182 | static struct proc_dir_entry *proc_pmu_options; |
183 | static int option_server_mode; |
184 | |
185 | int pmu_battery_count; |
186 | int pmu_cur_battery; |
187 | unsigned int pmu_power_flags = PMU_PWR_AC_PRESENT; |
188 | struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; |
189 | static int query_batt_timer = BATTERY_POLLING_COUNT; |
190 | static struct adb_request batt_req; |
191 | static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES]; |
192 | |
193 | int __fake_sleep; |
194 | int asleep; |
195 | |
196 | #ifdef CONFIG_ADB |
197 | static int adb_dev_map; |
198 | static int pmu_adb_flags; |
199 | |
200 | static int pmu_probe(void); |
201 | static int pmu_init(void); |
202 | static int pmu_send_request(struct adb_request *req, int sync); |
203 | static int pmu_adb_autopoll(int devs); |
204 | static int pmu_adb_reset_bus(void); |
205 | #endif /* CONFIG_ADB */ |
206 | |
207 | static int init_pmu(void); |
208 | static void pmu_start(void); |
209 | static irqreturn_t via_pmu_interrupt(int irq, void *arg); |
210 | static irqreturn_t gpio1_interrupt(int irq, void *arg); |
211 | static int pmu_info_proc_show(struct seq_file *m, void *v); |
212 | static int pmu_irqstats_proc_show(struct seq_file *m, void *v); |
213 | static int pmu_battery_proc_show(struct seq_file *m, void *v); |
214 | static void pmu_pass_intr(unsigned char *data, int len); |
215 | static const struct file_operations pmu_options_proc_fops; |
216 | |
217 | #ifdef CONFIG_ADB |
218 | const struct adb_driver via_pmu_driver = { |
219 | .name = "PMU", |
220 | .probe = pmu_probe, |
221 | .init = pmu_init, |
222 | .send_request = pmu_send_request, |
223 | .autopoll = pmu_adb_autopoll, |
224 | .poll = pmu_poll_adb, |
225 | .reset_bus = pmu_adb_reset_bus, |
226 | }; |
227 | #endif /* CONFIG_ADB */ |
228 | |
229 | extern void low_sleep_handler(void); |
230 | extern void enable_kernel_altivec(void); |
231 | extern void enable_kernel_fp(void); |
232 | |
233 | #ifdef DEBUG_SLEEP |
234 | int pmu_polled_request(struct adb_request *req); |
235 | void pmu_blink(int n); |
236 | #endif |
237 | |
238 | /* |
239 | * This table indicates for each PMU opcode: |
240 | * - the number of data bytes to be sent with the command, or -1 |
241 | * if a length byte should be sent, |
242 | * - the number of response bytes which the PMU will return, or |
243 | * -1 if it will send a length byte. |
244 | */ |
245 | static const s8 pmu_data_len[256][2] = { |
246 | /* 0 1 2 3 4 5 6 7 */ |
247 | /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
248 | /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
249 | /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
250 | /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0}, |
251 | /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0}, |
252 | /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1}, |
253 | /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
254 | /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0}, |
255 | /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
256 | /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1}, |
257 | /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0}, |
258 | /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1}, |
259 | /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
260 | /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1}, |
261 | /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
262 | /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1}, |
263 | /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
264 | /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
265 | /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
266 | /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
267 | /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0}, |
268 | /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
269 | /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
270 | /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
271 | /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
272 | /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
273 | /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
274 | /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1}, |
275 | /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0}, |
276 | /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0}, |
277 | /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, |
278 | /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, |
279 | }; |
280 | |
281 | static char *pbook_type[] = { |
282 | "Unknown PowerBook", |
283 | "PowerBook 2400/3400/3500(G3)", |
284 | "PowerBook G3 Series", |
285 | "1999 PowerBook G3", |
286 | "Core99" |
287 | }; |
288 | |
289 | int __init find_via_pmu(void) |
290 | { |
291 | #ifdef CONFIG_PPC_PMAC |
292 | u64 taddr; |
293 | const u32 *reg; |
294 | |
295 | if (pmu_state != uninitialized) |
296 | return 1; |
297 | vias = of_find_node_by_name(NULL, "via-pmu"); |
298 | if (vias == NULL) |
299 | return 0; |
300 | |
301 | reg = of_get_property(vias, "reg", NULL); |
302 | if (reg == NULL) { |
303 | printk(KERN_ERR "via-pmu: No \"reg\" property !\n"); |
304 | goto fail; |
305 | } |
306 | taddr = of_translate_address(vias, reg); |
307 | if (taddr == OF_BAD_ADDR) { |
308 | printk(KERN_ERR "via-pmu: Can't translate address !\n"); |
309 | goto fail; |
310 | } |
311 | |
312 | spin_lock_init(&pmu_lock); |
313 | |
314 | pmu_has_adb = 1; |
315 | |
316 | pmu_intr_mask = PMU_INT_PCEJECT | |
317 | PMU_INT_SNDBRT | |
318 | PMU_INT_ADB | |
319 | PMU_INT_TICK; |
320 | |
321 | if (of_node_name_eq(vias->parent, "ohare") || |
322 | of_device_is_compatible(vias->parent, "ohare")) |
323 | pmu_kind = PMU_OHARE_BASED; |
324 | else if (of_device_is_compatible(vias->parent, "paddington")) |
325 | pmu_kind = PMU_PADDINGTON_BASED; |
326 | else if (of_device_is_compatible(vias->parent, "heathrow")) |
327 | pmu_kind = PMU_HEATHROW_BASED; |
328 | else if (of_device_is_compatible(vias->parent, "Keylargo") |
329 | || of_device_is_compatible(vias->parent, "K2-Keylargo")) { |
330 | struct device_node *gpiop; |
331 | struct device_node *adbp; |
332 | u64 gaddr = OF_BAD_ADDR; |
333 | |
334 | pmu_kind = PMU_KEYLARGO_BASED; |
335 | adbp = of_find_node_by_type(NULL, "adb"); |
336 | pmu_has_adb = (adbp != NULL); |
337 | of_node_put(adbp); |
338 | pmu_intr_mask = PMU_INT_PCEJECT | |
339 | PMU_INT_SNDBRT | |
340 | PMU_INT_ADB | |
341 | PMU_INT_TICK | |
342 | PMU_INT_ENVIRONMENT; |
343 | |
344 | gpiop = of_find_node_by_name(NULL, "gpio"); |
345 | if (gpiop) { |
346 | reg = of_get_property(gpiop, "reg", NULL); |
347 | if (reg) |
348 | gaddr = of_translate_address(gpiop, reg); |
349 | if (gaddr != OF_BAD_ADDR) |
350 | gpio_reg = ioremap(gaddr, 0x10); |
351 | of_node_put(gpiop); |
352 | } |
353 | if (gpio_reg == NULL) { |
354 | printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n"); |
355 | goto fail; |
356 | } |
357 | } else |
358 | pmu_kind = PMU_UNKNOWN; |
359 | |
360 | via1 = via2 = ioremap(taddr, 0x2000); |
361 | if (via1 == NULL) { |
362 | printk(KERN_ERR "via-pmu: Can't map address !\n"); |
363 | goto fail_via_remap; |
364 | } |
365 | |
366 | out_8(&via1[IER], IER_CLR | 0x7f); /* disable all intrs */ |
367 | out_8(&via1[IFR], 0x7f); /* clear IFR */ |
368 | |
369 | pmu_state = idle; |
370 | |
371 | if (!init_pmu()) |
372 | goto fail_init; |
373 | |
374 | sys_ctrler = SYS_CTRLER_PMU; |
375 | |
376 | return 1; |
377 | |
378 | fail_init: |
379 | iounmap(via1); |
380 | via1 = via2 = NULL; |
381 | fail_via_remap: |
382 | iounmap(gpio_reg); |
383 | gpio_reg = NULL; |
384 | fail: |
385 | of_node_put(vias); |
386 | vias = NULL; |
387 | pmu_state = uninitialized; |
388 | return 0; |
389 | #else |
390 | if (macintosh_config->adb_type != MAC_ADB_PB2) |
391 | return 0; |
392 | |
393 | pmu_kind = PMU_UNKNOWN; |
394 | |
395 | spin_lock_init(&pmu_lock); |
396 | |
397 | pmu_has_adb = 1; |
398 | |
399 | pmu_intr_mask = PMU_INT_PCEJECT | |
400 | PMU_INT_SNDBRT | |
401 | PMU_INT_ADB | |
402 | PMU_INT_TICK; |
403 | |
404 | pmu_state = idle; |
405 | |
406 | if (!init_pmu()) { |
407 | pmu_state = uninitialized; |
408 | return 0; |
409 | } |
410 | |
411 | return 1; |
412 | #endif /* !CONFIG_PPC_PMAC */ |
413 | } |
414 | |
415 | #ifdef CONFIG_ADB |
416 | static int pmu_probe(void) |
417 | { |
418 | return pmu_state == uninitialized ? -ENODEV : 0; |
419 | } |
420 | |
421 | static int pmu_init(void) |
422 | { |
423 | return pmu_state == uninitialized ? -ENODEV : 0; |
424 | } |
425 | #endif /* CONFIG_ADB */ |
426 | |
427 | /* |
428 | * We can't wait until pmu_init gets called, that happens too late. |
429 | * It happens after IDE and SCSI initialization, which can take a few |
430 | * seconds, and by that time the PMU could have given up on us and |
431 | * turned us off. |
432 | * Thus this is called with arch_initcall rather than device_initcall. |
433 | */ |
434 | static int __init via_pmu_start(void) |
435 | { |
436 | unsigned int __maybe_unused irq; |
437 | |
438 | if (pmu_state == uninitialized) |
439 | return -ENODEV; |
440 | |
441 | batt_req.complete = 1; |
442 | |
443 | #ifdef CONFIG_PPC_PMAC |
444 | irq = irq_of_parse_and_map(vias, 0); |
445 | if (!irq) { |
446 | printk(KERN_ERR "via-pmu: can't map interrupt\n"); |
447 | return -ENODEV; |
448 | } |
449 | /* We set IRQF_NO_SUSPEND because we don't want the interrupt |
450 | * to be disabled between the 2 passes of driver suspend, we |
451 | * control our own disabling for that one |
452 | */ |
453 | if (request_irq(irq, via_pmu_interrupt, IRQF_NO_SUSPEND, |
454 | "VIA-PMU", (void *)0)) { |
455 | printk(KERN_ERR "via-pmu: can't request irq %d\n", irq); |
456 | return -ENODEV; |
457 | } |
458 | |
459 | if (pmu_kind == PMU_KEYLARGO_BASED) { |
460 | gpio_node = of_find_node_by_name(NULL, "extint-gpio1"); |
461 | if (gpio_node == NULL) |
462 | gpio_node = of_find_node_by_name(NULL, |
463 | "pmu-interrupt"); |
464 | if (gpio_node) |
465 | gpio_irq = irq_of_parse_and_map(gpio_node, 0); |
466 | |
467 | if (gpio_irq) { |
468 | if (request_irq(gpio_irq, gpio1_interrupt, |
469 | IRQF_NO_SUSPEND, "GPIO1 ADB", |
470 | (void *)0)) |
471 | printk(KERN_ERR "pmu: can't get irq %d" |
472 | " (GPIO1)\n", gpio_irq); |
473 | else |
474 | gpio_irq_enabled = 1; |
475 | } |
476 | } |
477 | |
478 | /* Enable interrupts */ |
479 | out_8(&via1[IER], IER_SET | SR_INT | CB1_INT); |
480 | #else |
481 | if (request_irq(IRQ_MAC_ADB_SR, via_pmu_interrupt, IRQF_NO_SUSPEND, |
482 | "VIA-PMU-SR", NULL)) { |
483 | pr_err("%s: couldn't get SR irq\n", __func__); |
484 | return -ENODEV; |
485 | } |
486 | if (request_irq(IRQ_MAC_ADB_CL, via_pmu_interrupt, IRQF_NO_SUSPEND, |
487 | "VIA-PMU-CL", NULL)) { |
488 | pr_err("%s: couldn't get CL irq\n", __func__); |
489 | free_irq(IRQ_MAC_ADB_SR, NULL); |
490 | return -ENODEV; |
491 | } |
492 | #endif /* !CONFIG_PPC_PMAC */ |
493 | |
494 | pmu_fully_inited = 1; |
495 | |
496 | /* Make sure PMU settle down before continuing. This is _very_ important |
497 | * since the IDE probe may shut interrupts down for quite a bit of time. If |
498 | * a PMU communication is pending while this happens, the PMU may timeout |
499 | * Not that on Core99 machines, the PMU keeps sending us environement |
500 | * messages, we should find a way to either fix IDE or make it call |
501 | * pmu_suspend() before masking interrupts. This can also happens while |
502 | * scolling with some fbdevs. |
503 | */ |
504 | do { |
505 | pmu_poll(); |
506 | } while (pmu_state != idle); |
507 | |
508 | return 0; |
509 | } |
510 | |
511 | arch_initcall(via_pmu_start); |
512 | |
513 | /* |
514 | * This has to be done after pci_init, which is a subsys_initcall. |
515 | */ |
516 | static int __init via_pmu_dev_init(void) |
517 | { |
518 | if (pmu_state == uninitialized) |
519 | return -ENODEV; |
520 | |
521 | #ifdef CONFIG_PMAC_BACKLIGHT |
522 | /* Initialize backlight */ |
523 | pmu_backlight_init(); |
524 | #endif |
525 | |
526 | #ifdef CONFIG_PPC32 |
527 | if (of_machine_is_compatible("AAPL,3400/2400") || |
528 | of_machine_is_compatible("AAPL,3500")) { |
529 | int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO, |
530 | NULL, PMAC_MB_INFO_MODEL, 0); |
531 | pmu_battery_count = 1; |
532 | if (mb == PMAC_TYPE_COMET) |
533 | pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET; |
534 | else |
535 | pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER; |
536 | } else if (of_machine_is_compatible("AAPL,PowerBook1998") || |
537 | of_machine_is_compatible("PowerBook1,1")) { |
538 | pmu_battery_count = 2; |
539 | pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART; |
540 | pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART; |
541 | } else { |
542 | struct device_node* prim = |
543 | of_find_node_by_name(NULL, "power-mgt"); |
544 | const u32 *prim_info = NULL; |
545 | if (prim) |
546 | prim_info = of_get_property(prim, "prim-info", NULL); |
547 | if (prim_info) { |
548 | /* Other stuffs here yet unknown */ |
549 | pmu_battery_count = (prim_info[6] >> 16) & 0xff; |
550 | pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART; |
551 | if (pmu_battery_count > 1) |
552 | pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART; |
553 | } |
554 | of_node_put(prim); |
555 | } |
556 | #endif /* CONFIG_PPC32 */ |
557 | |
558 | /* Create /proc/pmu */ |
559 | proc_pmu_root = proc_mkdir("pmu", NULL); |
560 | if (proc_pmu_root) { |
561 | long i; |
562 | |
563 | for (i=0; i<pmu_battery_count; i++) { |
564 | char title[16]; |
565 | sprintf(title, "battery_%ld", i); |
566 | proc_pmu_batt[i] = proc_create_single_data(title, 0, |
567 | proc_pmu_root, pmu_battery_proc_show, |
568 | (void *)i); |
569 | } |
570 | |
571 | proc_pmu_info = proc_create_single("info", 0, proc_pmu_root, |
572 | pmu_info_proc_show); |
573 | proc_pmu_irqstats = proc_create_single("interrupts", 0, |
574 | proc_pmu_root, pmu_irqstats_proc_show); |
575 | proc_pmu_options = proc_create("options", 0600, proc_pmu_root, |
576 | &pmu_options_proc_fops); |
577 | } |
578 | return 0; |
579 | } |
580 | |
581 | device_initcall(via_pmu_dev_init); |
582 | |
583 | static int |
584 | init_pmu(void) |
585 | { |
586 | int timeout; |
587 | struct adb_request req; |
588 | |
589 | /* Negate TREQ. Set TACK to input and TREQ to output. */ |
590 | out_8(&via2[B], in_8(&via2[B]) | TREQ); |
591 | out_8(&via2[DIRB], (in_8(&via2[DIRB]) | TREQ) & ~TACK); |
592 | |
593 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); |
594 | timeout = 100000; |
595 | while (!req.complete) { |
596 | if (--timeout < 0) { |
597 | printk(KERN_ERR "init_pmu: no response from PMU\n"); |
598 | return 0; |
599 | } |
600 | udelay(10); |
601 | pmu_poll(); |
602 | } |
603 | |
604 | /* ack all pending interrupts */ |
605 | timeout = 100000; |
606 | interrupt_data[0][0] = 1; |
607 | while (interrupt_data[0][0] || pmu_state != idle) { |
608 | if (--timeout < 0) { |
609 | printk(KERN_ERR "init_pmu: timed out acking intrs\n"); |
610 | return 0; |
611 | } |
612 | if (pmu_state == idle) |
613 | adb_int_pending = 1; |
614 | via_pmu_interrupt(0, NULL); |
615 | udelay(10); |
616 | } |
617 | |
618 | /* Tell PMU we are ready. */ |
619 | if (pmu_kind == PMU_KEYLARGO_BASED) { |
620 | pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); |
621 | while (!req.complete) |
622 | pmu_poll(); |
623 | } |
624 | |
625 | /* Read PMU version */ |
626 | pmu_request(&req, NULL, 1, PMU_GET_VERSION); |
627 | pmu_wait_complete(&req); |
628 | if (req.reply_len > 0) |
629 | pmu_version = req.reply[0]; |
630 | |
631 | /* Read server mode setting */ |
632 | if (pmu_kind == PMU_KEYLARGO_BASED) { |
633 | pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, |
634 | PMU_PWR_GET_POWERUP_EVENTS); |
635 | pmu_wait_complete(&req); |
636 | if (req.reply_len == 2) { |
637 | if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT) |
638 | option_server_mode = 1; |
639 | printk(KERN_INFO "via-pmu: Server Mode is %s\n", |
640 | option_server_mode ? "enabled": "disabled"); |
641 | } |
642 | } |
643 | |
644 | printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n", |
645 | PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version); |
646 | |
647 | return 1; |
648 | } |
649 | |
650 | int |
651 | pmu_get_model(void) |
652 | { |
653 | return pmu_kind; |
654 | } |
655 | |
656 | static void pmu_set_server_mode(int server_mode) |
657 | { |
658 | struct adb_request req; |
659 | |
660 | if (pmu_kind != PMU_KEYLARGO_BASED) |
661 | return; |
662 | |
663 | option_server_mode = server_mode; |
664 | pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS); |
665 | pmu_wait_complete(&req); |
666 | if (req.reply_len < 2) |
667 | return; |
668 | if (server_mode) |
669 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, |
670 | PMU_PWR_SET_POWERUP_EVENTS, |
671 | req.reply[0], PMU_PWR_WAKEUP_AC_INSERT); |
672 | else |
673 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, |
674 | PMU_PWR_CLR_POWERUP_EVENTS, |
675 | req.reply[0], PMU_PWR_WAKEUP_AC_INSERT); |
676 | pmu_wait_complete(&req); |
677 | } |
678 | |
679 | /* This new version of the code for 2400/3400/3500 powerbooks |
680 | * is inspired from the implementation in gkrellm-pmu |
681 | */ |
682 | static void |
683 | done_battery_state_ohare(struct adb_request* req) |
684 | { |
685 | #ifdef CONFIG_PPC_PMAC |
686 | /* format: |
687 | * [0] : flags |
688 | * 0x01 : AC indicator |
689 | * 0x02 : charging |
690 | * 0x04 : battery exist |
691 | * 0x08 : |
692 | * 0x10 : |
693 | * 0x20 : full charged |
694 | * 0x40 : pcharge reset |
695 | * 0x80 : battery exist |
696 | * |
697 | * [1][2] : battery voltage |
698 | * [3] : CPU temperature |
699 | * [4] : battery temperature |
700 | * [5] : current |
701 | * [6][7] : pcharge |
702 | * --tkoba |
703 | */ |
704 | unsigned int bat_flags = PMU_BATT_TYPE_HOOPER; |
705 | long pcharge, charge, vb, vmax, lmax; |
706 | long vmax_charging, vmax_charged; |
707 | long amperage, voltage, time, max; |
708 | int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO, |
709 | NULL, PMAC_MB_INFO_MODEL, 0); |
710 | |
711 | if (req->reply[0] & 0x01) |
712 | pmu_power_flags |= PMU_PWR_AC_PRESENT; |
713 | else |
714 | pmu_power_flags &= ~PMU_PWR_AC_PRESENT; |
715 | |
716 | if (mb == PMAC_TYPE_COMET) { |
717 | vmax_charged = 189; |
718 | vmax_charging = 213; |
719 | lmax = 6500; |
720 | } else { |
721 | vmax_charged = 330; |
722 | vmax_charging = 330; |
723 | lmax = 6500; |
724 | } |
725 | vmax = vmax_charged; |
726 | |
727 | /* If battery installed */ |
728 | if (req->reply[0] & 0x04) { |
729 | bat_flags |= PMU_BATT_PRESENT; |
730 | if (req->reply[0] & 0x02) |
731 | bat_flags |= PMU_BATT_CHARGING; |
732 | vb = (req->reply[1] << 8) | req->reply[2]; |
733 | voltage = (vb * 265 + 72665) / 10; |
734 | amperage = req->reply[5]; |
735 | if ((req->reply[0] & 0x01) == 0) { |
736 | if (amperage > 200) |
737 | vb += ((amperage - 200) * 15)/100; |
738 | } else if (req->reply[0] & 0x02) { |
739 | vb = (vb * 97) / 100; |
740 | vmax = vmax_charging; |
741 | } |
742 | charge = (100 * vb) / vmax; |
743 | if (req->reply[0] & 0x40) { |
744 | pcharge = (req->reply[6] << 8) + req->reply[7]; |
745 | if (pcharge > lmax) |
746 | pcharge = lmax; |
747 | pcharge *= 100; |
748 | pcharge = 100 - pcharge / lmax; |
749 | if (pcharge < charge) |
750 | charge = pcharge; |
751 | } |
752 | if (amperage > 0) |
753 | time = (charge * 16440) / amperage; |
754 | else |
755 | time = 0; |
756 | max = 100; |
757 | amperage = -amperage; |
758 | } else |
759 | charge = max = amperage = voltage = time = 0; |
760 | |
761 | pmu_batteries[pmu_cur_battery].flags = bat_flags; |
762 | pmu_batteries[pmu_cur_battery].charge = charge; |
763 | pmu_batteries[pmu_cur_battery].max_charge = max; |
764 | pmu_batteries[pmu_cur_battery].amperage = amperage; |
765 | pmu_batteries[pmu_cur_battery].voltage = voltage; |
766 | pmu_batteries[pmu_cur_battery].time_remaining = time; |
767 | #endif /* CONFIG_PPC_PMAC */ |
768 | |
769 | clear_bit(0, &async_req_locks); |
770 | } |
771 | |
772 | static void |
773 | done_battery_state_smart(struct adb_request* req) |
774 | { |
775 | /* format: |
776 | * [0] : format of this structure (known: 3,4,5) |
777 | * [1] : flags |
778 | * |
779 | * format 3 & 4: |
780 | * |
781 | * [2] : charge |
782 | * [3] : max charge |
783 | * [4] : current |
784 | * [5] : voltage |
785 | * |
786 | * format 5: |
787 | * |
788 | * [2][3] : charge |
789 | * [4][5] : max charge |
790 | * [6][7] : current |
791 | * [8][9] : voltage |
792 | */ |
793 | |
794 | unsigned int bat_flags = PMU_BATT_TYPE_SMART; |
795 | int amperage; |
796 | unsigned int capa, max, voltage; |
797 | |
798 | if (req->reply[1] & 0x01) |
799 | pmu_power_flags |= PMU_PWR_AC_PRESENT; |
800 | else |
801 | pmu_power_flags &= ~PMU_PWR_AC_PRESENT; |
802 | |
803 | |
804 | capa = max = amperage = voltage = 0; |
805 | |
806 | if (req->reply[1] & 0x04) { |
807 | bat_flags |= PMU_BATT_PRESENT; |
808 | switch(req->reply[0]) { |
809 | case 3: |
810 | case 4: capa = req->reply[2]; |
811 | max = req->reply[3]; |
812 | amperage = *((signed char *)&req->reply[4]); |
813 | voltage = req->reply[5]; |
814 | break; |
815 | case 5: capa = (req->reply[2] << 8) | req->reply[3]; |
816 | max = (req->reply[4] << 8) | req->reply[5]; |
817 | amperage = *((signed short *)&req->reply[6]); |
818 | voltage = (req->reply[8] << 8) | req->reply[9]; |
819 | break; |
820 | default: |
821 | pr_warn("pmu.c: unrecognized battery info, " |
822 | "len: %d, %4ph\n", req->reply_len, |
823 | req->reply); |
824 | break; |
825 | } |
826 | } |
827 | |
828 | if ((req->reply[1] & 0x01) && (amperage > 0)) |
829 | bat_flags |= PMU_BATT_CHARGING; |
830 | |
831 | pmu_batteries[pmu_cur_battery].flags = bat_flags; |
832 | pmu_batteries[pmu_cur_battery].charge = capa; |
833 | pmu_batteries[pmu_cur_battery].max_charge = max; |
834 | pmu_batteries[pmu_cur_battery].amperage = amperage; |
835 | pmu_batteries[pmu_cur_battery].voltage = voltage; |
836 | if (amperage) { |
837 | if ((req->reply[1] & 0x01) && (amperage > 0)) |
838 | pmu_batteries[pmu_cur_battery].time_remaining |
839 | = ((max-capa) * 3600) / amperage; |
840 | else |
841 | pmu_batteries[pmu_cur_battery].time_remaining |
842 | = (capa * 3600) / (-amperage); |
843 | } else |
844 | pmu_batteries[pmu_cur_battery].time_remaining = 0; |
845 | |
846 | pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count; |
847 | |
848 | clear_bit(0, &async_req_locks); |
849 | } |
850 | |
851 | static void |
852 | query_battery_state(void) |
853 | { |
854 | if (test_and_set_bit(0, &async_req_locks)) |
855 | return; |
856 | if (pmu_kind == PMU_OHARE_BASED) |
857 | pmu_request(&batt_req, done_battery_state_ohare, |
858 | 1, PMU_BATTERY_STATE); |
859 | else |
860 | pmu_request(&batt_req, done_battery_state_smart, |
861 | 2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1); |
862 | } |
863 | |
864 | static int pmu_info_proc_show(struct seq_file *m, void *v) |
865 | { |
866 | seq_printf(m, "PMU driver version : %d\n", PMU_DRIVER_VERSION); |
867 | seq_printf(m, "PMU firmware version : %02x\n", pmu_version); |
868 | seq_printf(m, "AC Power : %d\n", |
869 | ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0); |
870 | seq_printf(m, "Battery count : %d\n", pmu_battery_count); |
871 | |
872 | return 0; |
873 | } |
874 | |
875 | static int pmu_irqstats_proc_show(struct seq_file *m, void *v) |
876 | { |
877 | int i; |
878 | static const char *irq_names[NUM_IRQ_STATS] = { |
879 | "Unknown interrupt (type 0)", |
880 | "Unknown interrupt (type 1)", |
881 | "PC-Card eject button", |
882 | "Sound/Brightness button", |
883 | "ADB message", |
884 | "Battery state change", |
885 | "Environment interrupt", |
886 | "Tick timer", |
887 | "Ghost interrupt (zero len)", |
888 | "Empty interrupt (empty mask)", |
889 | "Max irqs in a row", |
890 | "Total CB1 triggered events", |
891 | "Total GPIO1 triggered events", |
892 | }; |
893 | |
894 | for (i = 0; i < NUM_IRQ_STATS; i++) { |
895 | seq_printf(m, " %2u: %10u (%s)\n", |
896 | i, pmu_irq_stats[i], irq_names[i]); |
897 | } |
898 | return 0; |
899 | } |
900 | |
901 | static int pmu_battery_proc_show(struct seq_file *m, void *v) |
902 | { |
903 | long batnum = (long)m->private; |
904 | |
905 | seq_putc(m, '\n'); |
906 | seq_printf(m, "flags : %08x\n", pmu_batteries[batnum].flags); |
907 | seq_printf(m, "charge : %d\n", pmu_batteries[batnum].charge); |
908 | seq_printf(m, "max_charge : %d\n", pmu_batteries[batnum].max_charge); |
909 | seq_printf(m, "current : %d\n", pmu_batteries[batnum].amperage); |
910 | seq_printf(m, "voltage : %d\n", pmu_batteries[batnum].voltage); |
911 | seq_printf(m, "time rem. : %d\n", pmu_batteries[batnum].time_remaining); |
912 | return 0; |
913 | } |
914 | |
915 | static int pmu_options_proc_show(struct seq_file *m, void *v) |
916 | { |
917 | #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) |
918 | if (pmu_kind == PMU_KEYLARGO_BASED && |
919 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0) |
920 | seq_printf(m, "lid_wakeup=%d\n", option_lid_wakeup); |
921 | #endif |
922 | if (pmu_kind == PMU_KEYLARGO_BASED) |
923 | seq_printf(m, "server_mode=%d\n", option_server_mode); |
924 | |
925 | return 0; |
926 | } |
927 | |
928 | static int pmu_options_proc_open(struct inode *inode, struct file *file) |
929 | { |
930 | return single_open(file, pmu_options_proc_show, NULL); |
931 | } |
932 | |
933 | static ssize_t pmu_options_proc_write(struct file *file, |
934 | const char __user *buffer, size_t count, loff_t *pos) |
935 | { |
936 | char tmp[33]; |
937 | char *label, *val; |
938 | size_t fcount = count; |
939 | |
940 | if (!count) |
941 | return -EINVAL; |
942 | if (count > 32) |
943 | count = 32; |
944 | if (copy_from_user(tmp, buffer, count)) |
945 | return -EFAULT; |
946 | tmp[count] = 0; |
947 | |
948 | label = tmp; |
949 | while(*label == ' ') |
950 | label++; |
951 | val = label; |
952 | while(*val && (*val != '=')) { |
953 | if (*val == ' ') |
954 | *val = 0; |
955 | val++; |
956 | } |
957 | if ((*val) == 0) |
958 | return -EINVAL; |
959 | *(val++) = 0; |
960 | while(*val == ' ') |
961 | val++; |
962 | #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) |
963 | if (pmu_kind == PMU_KEYLARGO_BASED && |
964 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0) |
965 | if (!strcmp(label, "lid_wakeup")) |
966 | option_lid_wakeup = ((*val) == '1'); |
967 | #endif |
968 | if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) { |
969 | int new_value; |
970 | new_value = ((*val) == '1'); |
971 | if (new_value != option_server_mode) |
972 | pmu_set_server_mode(new_value); |
973 | } |
974 | return fcount; |
975 | } |
976 | |
977 | static const struct file_operations pmu_options_proc_fops = { |
978 | .owner = THIS_MODULE, |
979 | .open = pmu_options_proc_open, |
980 | .read = seq_read, |
981 | .llseek = seq_lseek, |
982 | .release = single_release, |
983 | .write = pmu_options_proc_write, |
984 | }; |
985 | |
986 | #ifdef CONFIG_ADB |
987 | /* Send an ADB command */ |
988 | static int pmu_send_request(struct adb_request *req, int sync) |
989 | { |
990 | int i, ret; |
991 | |
992 | if (pmu_state == uninitialized || !pmu_fully_inited) { |
993 | req->complete = 1; |
994 | return -ENXIO; |
995 | } |
996 | |
997 | ret = -EINVAL; |
998 | |
999 | switch (req->data[0]) { |
1000 | case PMU_PACKET: |
1001 | for (i = 0; i < req->nbytes - 1; ++i) |
1002 | req->data[i] = req->data[i+1]; |
1003 | --req->nbytes; |
1004 | if (pmu_data_len[req->data[0]][1] != 0) { |
1005 | req->reply[0] = ADB_RET_OK; |
1006 | req->reply_len = 1; |
1007 | } else |
1008 | req->reply_len = 0; |
1009 | ret = pmu_queue_request(req); |
1010 | break; |
1011 | case CUDA_PACKET: |
1012 | switch (req->data[1]) { |
1013 | case CUDA_GET_TIME: |
1014 | if (req->nbytes != 2) |
1015 | break; |
1016 | req->data[0] = PMU_READ_RTC; |
1017 | req->nbytes = 1; |
1018 | req->reply_len = 3; |
1019 | req->reply[0] = CUDA_PACKET; |
1020 | req->reply[1] = 0; |
1021 | req->reply[2] = CUDA_GET_TIME; |
1022 | ret = pmu_queue_request(req); |
1023 | break; |
1024 | case CUDA_SET_TIME: |
1025 | if (req->nbytes != 6) |
1026 | break; |
1027 | req->data[0] = PMU_SET_RTC; |
1028 | req->nbytes = 5; |
1029 | for (i = 1; i <= 4; ++i) |
1030 | req->data[i] = req->data[i+1]; |
1031 | req->reply_len = 3; |
1032 | req->reply[0] = CUDA_PACKET; |
1033 | req->reply[1] = 0; |
1034 | req->reply[2] = CUDA_SET_TIME; |
1035 | ret = pmu_queue_request(req); |
1036 | break; |
1037 | } |
1038 | break; |
1039 | case ADB_PACKET: |
1040 | if (!pmu_has_adb) |
1041 | return -ENXIO; |
1042 | for (i = req->nbytes - 1; i > 1; --i) |
1043 | req->data[i+2] = req->data[i]; |
1044 | req->data[3] = req->nbytes - 2; |
1045 | req->data[2] = pmu_adb_flags; |
1046 | /*req->data[1] = req->data[1];*/ |
1047 | req->data[0] = PMU_ADB_CMD; |
1048 | req->nbytes += 2; |
1049 | req->reply_expected = 1; |
1050 | req->reply_len = 0; |
1051 | ret = pmu_queue_request(req); |
1052 | break; |
1053 | } |
1054 | if (ret) { |
1055 | req->complete = 1; |
1056 | return ret; |
1057 | } |
1058 | |
1059 | if (sync) |
1060 | while (!req->complete) |
1061 | pmu_poll(); |
1062 | |
1063 | return 0; |
1064 | } |
1065 | |
1066 | /* Enable/disable autopolling */ |
1067 | static int __pmu_adb_autopoll(int devs) |
1068 | { |
1069 | struct adb_request req; |
1070 | |
1071 | if (devs) { |
1072 | pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86, |
1073 | adb_dev_map >> 8, adb_dev_map); |
1074 | pmu_adb_flags = 2; |
1075 | } else { |
1076 | pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF); |
1077 | pmu_adb_flags = 0; |
1078 | } |
1079 | while (!req.complete) |
1080 | pmu_poll(); |
1081 | return 0; |
1082 | } |
1083 | |
1084 | static int pmu_adb_autopoll(int devs) |
1085 | { |
1086 | if (pmu_state == uninitialized || !pmu_fully_inited || !pmu_has_adb) |
1087 | return -ENXIO; |
1088 | |
1089 | adb_dev_map = devs; |
1090 | return __pmu_adb_autopoll(devs); |
1091 | } |
1092 | |
1093 | /* Reset the ADB bus */ |
1094 | static int pmu_adb_reset_bus(void) |
1095 | { |
1096 | struct adb_request req; |
1097 | int save_autopoll = adb_dev_map; |
1098 | |
1099 | if (pmu_state == uninitialized || !pmu_fully_inited || !pmu_has_adb) |
1100 | return -ENXIO; |
1101 | |
1102 | /* anyone got a better idea?? */ |
1103 | __pmu_adb_autopoll(0); |
1104 | |
1105 | req.nbytes = 4; |
1106 | req.done = NULL; |
1107 | req.data[0] = PMU_ADB_CMD; |
1108 | req.data[1] = ADB_BUSRESET; |
1109 | req.data[2] = 0; |
1110 | req.data[3] = 0; |
1111 | req.data[4] = 0; |
1112 | req.reply_len = 0; |
1113 | req.reply_expected = 1; |
1114 | if (pmu_queue_request(&req) != 0) { |
1115 | printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n"); |
1116 | return -EIO; |
1117 | } |
1118 | pmu_wait_complete(&req); |
1119 | |
1120 | if (save_autopoll != 0) |
1121 | __pmu_adb_autopoll(save_autopoll); |
1122 | |
1123 | return 0; |
1124 | } |
1125 | #endif /* CONFIG_ADB */ |
1126 | |
1127 | /* Construct and send a pmu request */ |
1128 | int |
1129 | pmu_request(struct adb_request *req, void (*done)(struct adb_request *), |
1130 | int nbytes, ...) |
1131 | { |
1132 | va_list list; |
1133 | int i; |
1134 | |
1135 | if (pmu_state == uninitialized) |
1136 | return -ENXIO; |
1137 | |
1138 | if (nbytes < 0 || nbytes > 32) { |
1139 | printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes); |
1140 | req->complete = 1; |
1141 | return -EINVAL; |
1142 | } |
1143 | req->nbytes = nbytes; |
1144 | req->done = done; |
1145 | va_start(list, nbytes); |
1146 | for (i = 0; i < nbytes; ++i) |
1147 | req->data[i] = va_arg(list, int); |
1148 | va_end(list); |
1149 | req->reply_len = 0; |
1150 | req->reply_expected = 0; |
1151 | return pmu_queue_request(req); |
1152 | } |
1153 | |
1154 | int |
1155 | pmu_queue_request(struct adb_request *req) |
1156 | { |
1157 | unsigned long flags; |
1158 | int nsend; |
1159 | |
1160 | if (pmu_state == uninitialized) { |
1161 | req->complete = 1; |
1162 | return -ENXIO; |
1163 | } |
1164 | if (req->nbytes <= 0) { |
1165 | req->complete = 1; |
1166 | return 0; |
1167 | } |
1168 | nsend = pmu_data_len[req->data[0]][0]; |
1169 | if (nsend >= 0 && req->nbytes != nsend + 1) { |
1170 | req->complete = 1; |
1171 | return -EINVAL; |
1172 | } |
1173 | |
1174 | req->next = NULL; |
1175 | req->sent = 0; |
1176 | req->complete = 0; |
1177 | |
1178 | spin_lock_irqsave(&pmu_lock, flags); |
1179 | if (current_req) { |
1180 | last_req->next = req; |
1181 | last_req = req; |
1182 | } else { |
1183 | current_req = req; |
1184 | last_req = req; |
1185 | if (pmu_state == idle) |
1186 | pmu_start(); |
1187 | } |
1188 | spin_unlock_irqrestore(&pmu_lock, flags); |
1189 | |
1190 | return 0; |
1191 | } |
1192 | |
1193 | static inline void |
1194 | wait_for_ack(void) |
1195 | { |
1196 | /* Sightly increased the delay, I had one occurrence of the message |
1197 | * reported |
1198 | */ |
1199 | int timeout = 4000; |
1200 | while ((in_8(&via2[B]) & TACK) == 0) { |
1201 | if (--timeout < 0) { |
1202 | printk(KERN_ERR "PMU not responding (!ack)\n"); |
1203 | return; |
1204 | } |
1205 | udelay(10); |
1206 | } |
1207 | } |
1208 | |
1209 | /* New PMU seems to be very sensitive to those timings, so we make sure |
1210 | * PCI is flushed immediately */ |
1211 | static inline void |
1212 | send_byte(int x) |
1213 | { |
1214 | out_8(&via1[ACR], in_8(&via1[ACR]) | SR_OUT | SR_EXT); |
1215 | out_8(&via1[SR], x); |
1216 | out_8(&via2[B], in_8(&via2[B]) & ~TREQ); /* assert TREQ */ |
1217 | (void)in_8(&via2[B]); |
1218 | } |
1219 | |
1220 | static inline void |
1221 | recv_byte(void) |
1222 | { |
1223 | out_8(&via1[ACR], (in_8(&via1[ACR]) & ~SR_OUT) | SR_EXT); |
1224 | in_8(&via1[SR]); /* resets SR */ |
1225 | out_8(&via2[B], in_8(&via2[B]) & ~TREQ); |
1226 | (void)in_8(&via2[B]); |
1227 | } |
1228 | |
1229 | static inline void |
1230 | pmu_done(struct adb_request *req) |
1231 | { |
1232 | void (*done)(struct adb_request *) = req->done; |
1233 | mb(); |
1234 | req->complete = 1; |
1235 | /* Here, we assume that if the request has a done member, the |
1236 | * struct request will survive to setting req->complete to 1 |
1237 | */ |
1238 | if (done) |
1239 | (*done)(req); |
1240 | } |
1241 | |
1242 | static void |
1243 | pmu_start(void) |
1244 | { |
1245 | struct adb_request *req; |
1246 | |
1247 | /* assert pmu_state == idle */ |
1248 | /* get the packet to send */ |
1249 | req = current_req; |
1250 | if (!req || pmu_state != idle |
1251 | || (/*req->reply_expected && */req_awaiting_reply)) |
1252 | return; |
1253 | |
1254 | pmu_state = sending; |
1255 | data_index = 1; |
1256 | data_len = pmu_data_len[req->data[0]][0]; |
1257 | |
1258 | /* Sounds safer to make sure ACK is high before writing. This helped |
1259 | * kill a problem with ADB and some iBooks |
1260 | */ |
1261 | wait_for_ack(); |
1262 | /* set the shift register to shift out and send a byte */ |
1263 | send_byte(req->data[0]); |
1264 | } |
1265 | |
1266 | void |
1267 | pmu_poll(void) |
1268 | { |
1269 | if (pmu_state == uninitialized) |
1270 | return; |
1271 | if (disable_poll) |
1272 | return; |
1273 | via_pmu_interrupt(0, NULL); |
1274 | } |
1275 | |
1276 | void |
1277 | pmu_poll_adb(void) |
1278 | { |
1279 | if (pmu_state == uninitialized) |
1280 | return; |
1281 | if (disable_poll) |
1282 | return; |
1283 | /* Kicks ADB read when PMU is suspended */ |
1284 | adb_int_pending = 1; |
1285 | do { |
1286 | via_pmu_interrupt(0, NULL); |
1287 | } while (pmu_suspended && (adb_int_pending || pmu_state != idle |
1288 | || req_awaiting_reply)); |
1289 | } |
1290 | |
1291 | void |
1292 | pmu_wait_complete(struct adb_request *req) |
1293 | { |
1294 | if (pmu_state == uninitialized) |
1295 | return; |
1296 | while((pmu_state != idle && pmu_state != locked) || !req->complete) |
1297 | via_pmu_interrupt(0, NULL); |
1298 | } |
1299 | |
1300 | /* This function loops until the PMU is idle and prevents it from |
1301 | * anwsering to ADB interrupts. pmu_request can still be called. |
1302 | * This is done to avoid spurrious shutdowns when we know we'll have |
1303 | * interrupts switched off for a long time |
1304 | */ |
1305 | void |
1306 | pmu_suspend(void) |
1307 | { |
1308 | unsigned long flags; |
1309 | |
1310 | if (pmu_state == uninitialized) |
1311 | return; |
1312 | |
1313 | spin_lock_irqsave(&pmu_lock, flags); |
1314 | pmu_suspended++; |
1315 | if (pmu_suspended > 1) { |
1316 | spin_unlock_irqrestore(&pmu_lock, flags); |
1317 | return; |
1318 | } |
1319 | |
1320 | do { |
1321 | spin_unlock_irqrestore(&pmu_lock, flags); |
1322 | if (req_awaiting_reply) |
1323 | adb_int_pending = 1; |
1324 | via_pmu_interrupt(0, NULL); |
1325 | spin_lock_irqsave(&pmu_lock, flags); |
1326 | if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) { |
1327 | if (gpio_irq >= 0) |
1328 | disable_irq_nosync(gpio_irq); |
1329 | out_8(&via1[IER], CB1_INT | IER_CLR); |
1330 | spin_unlock_irqrestore(&pmu_lock, flags); |
1331 | break; |
1332 | } |
1333 | } while (1); |
1334 | } |
1335 | |
1336 | void |
1337 | pmu_resume(void) |
1338 | { |
1339 | unsigned long flags; |
1340 | |
1341 | if (pmu_state == uninitialized || pmu_suspended < 1) |
1342 | return; |
1343 | |
1344 | spin_lock_irqsave(&pmu_lock, flags); |
1345 | pmu_suspended--; |
1346 | if (pmu_suspended > 0) { |
1347 | spin_unlock_irqrestore(&pmu_lock, flags); |
1348 | return; |
1349 | } |
1350 | adb_int_pending = 1; |
1351 | if (gpio_irq >= 0) |
1352 | enable_irq(gpio_irq); |
1353 | out_8(&via1[IER], CB1_INT | IER_SET); |
1354 | spin_unlock_irqrestore(&pmu_lock, flags); |
1355 | pmu_poll(); |
1356 | } |
1357 | |
1358 | /* Interrupt data could be the result data from an ADB cmd */ |
1359 | static void |
1360 | pmu_handle_data(unsigned char *data, int len) |
1361 | { |
1362 | unsigned char ints; |
1363 | int idx; |
1364 | int i = 0; |
1365 | |
1366 | asleep = 0; |
1367 | if (drop_interrupts || len < 1) { |
1368 | adb_int_pending = 0; |
1369 | pmu_irq_stats[8]++; |
1370 | return; |
1371 | } |
1372 | |
1373 | /* Get PMU interrupt mask */ |
1374 | ints = data[0]; |
1375 | |
1376 | /* Record zero interrupts for stats */ |
1377 | if (ints == 0) |
1378 | pmu_irq_stats[9]++; |
1379 | |
1380 | /* Hack to deal with ADB autopoll flag */ |
1381 | if (ints & PMU_INT_ADB) |
1382 | ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL); |
1383 | |
1384 | next: |
1385 | if (ints == 0) { |
1386 | if (i > pmu_irq_stats[10]) |
1387 | pmu_irq_stats[10] = i; |
1388 | return; |
1389 | } |
1390 | i++; |
1391 | |
1392 | idx = ffs(ints) - 1; |
1393 | ints &= ~BIT(idx); |
1394 | |
1395 | pmu_irq_stats[idx]++; |
1396 | |
1397 | /* Note: for some reason, we get an interrupt with len=1, |
1398 | * data[0]==0 after each normal ADB interrupt, at least |
1399 | * on the Pismo. Still investigating... --BenH |
1400 | */ |
1401 | switch (BIT(idx)) { |
1402 | case PMU_INT_ADB: |
1403 | if ((data[0] & PMU_INT_ADB_AUTO) == 0) { |
1404 | struct adb_request *req = req_awaiting_reply; |
1405 | if (!req) { |
1406 | printk(KERN_ERR "PMU: extra ADB reply\n"); |
1407 | return; |
1408 | } |
1409 | req_awaiting_reply = NULL; |
1410 | if (len <= 2) |
1411 | req->reply_len = 0; |
1412 | else { |
1413 | memcpy(req->reply, data + 1, len - 1); |
1414 | req->reply_len = len - 1; |
1415 | } |
1416 | pmu_done(req); |
1417 | } else { |
1418 | #ifdef CONFIG_XMON |
1419 | if (len == 4 && data[1] == 0x2c) { |
1420 | extern int xmon_wants_key, xmon_adb_keycode; |
1421 | if (xmon_wants_key) { |
1422 | xmon_adb_keycode = data[2]; |
1423 | return; |
1424 | } |
1425 | } |
1426 | #endif /* CONFIG_XMON */ |
1427 | #ifdef CONFIG_ADB |
1428 | /* |
1429 | * XXX On the [23]400 the PMU gives us an up |
1430 | * event for keycodes 0x74 or 0x75 when the PC |
1431 | * card eject buttons are released, so we |
1432 | * ignore those events. |
1433 | */ |
1434 | if (!(pmu_kind == PMU_OHARE_BASED && len == 4 |
1435 | && data[1] == 0x2c && data[3] == 0xff |
1436 | && (data[2] & ~1) == 0xf4)) |
1437 | adb_input(data+1, len-1, 1); |
1438 | #endif /* CONFIG_ADB */ |
1439 | } |
1440 | break; |
1441 | |
1442 | /* Sound/brightness button pressed */ |
1443 | case PMU_INT_SNDBRT: |
1444 | #ifdef CONFIG_PMAC_BACKLIGHT |
1445 | if (len == 3) |
1446 | pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4); |
1447 | #endif |
1448 | break; |
1449 | |
1450 | /* Tick interrupt */ |
1451 | case PMU_INT_TICK: |
1452 | /* Environment or tick interrupt, query batteries */ |
1453 | if (pmu_battery_count) { |
1454 | if ((--query_batt_timer) == 0) { |
1455 | query_battery_state(); |
1456 | query_batt_timer = BATTERY_POLLING_COUNT; |
1457 | } |
1458 | } |
1459 | break; |
1460 | |
1461 | case PMU_INT_ENVIRONMENT: |
1462 | if (pmu_battery_count) |
1463 | query_battery_state(); |
1464 | pmu_pass_intr(data, len); |
1465 | /* len == 6 is probably a bad check. But how do I |
1466 | * know what PMU versions send what events here? */ |
1467 | if (len == 6) { |
1468 | via_pmu_event(PMU_EVT_POWER, !!(data[1]&8)); |
1469 | via_pmu_event(PMU_EVT_LID, data[1]&1); |
1470 | } |
1471 | break; |
1472 | |
1473 | default: |
1474 | pmu_pass_intr(data, len); |
1475 | } |
1476 | goto next; |
1477 | } |
1478 | |
1479 | static struct adb_request* |
1480 | pmu_sr_intr(void) |
1481 | { |
1482 | struct adb_request *req; |
1483 | int bite = 0; |
1484 | |
1485 | if (in_8(&via2[B]) & TREQ) { |
1486 | printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via2[B])); |
1487 | return NULL; |
1488 | } |
1489 | /* The ack may not yet be low when we get the interrupt */ |
1490 | while ((in_8(&via2[B]) & TACK) != 0) |
1491 | ; |
1492 | |
1493 | /* if reading grab the byte, and reset the interrupt */ |
1494 | if (pmu_state == reading || pmu_state == reading_intr) |
1495 | bite = in_8(&via1[SR]); |
1496 | |
1497 | /* reset TREQ and wait for TACK to go high */ |
1498 | out_8(&via2[B], in_8(&via2[B]) | TREQ); |
1499 | wait_for_ack(); |
1500 | |
1501 | switch (pmu_state) { |
1502 | case sending: |
1503 | req = current_req; |
1504 | if (data_len < 0) { |
1505 | data_len = req->nbytes - 1; |
1506 | send_byte(data_len); |
1507 | break; |
1508 | } |
1509 | if (data_index <= data_len) { |
1510 | send_byte(req->data[data_index++]); |
1511 | break; |
1512 | } |
1513 | req->sent = 1; |
1514 | data_len = pmu_data_len[req->data[0]][1]; |
1515 | if (data_len == 0) { |
1516 | pmu_state = idle; |
1517 | current_req = req->next; |
1518 | if (req->reply_expected) |
1519 | req_awaiting_reply = req; |
1520 | else |
1521 | return req; |
1522 | } else { |
1523 | pmu_state = reading; |
1524 | data_index = 0; |
1525 | reply_ptr = req->reply + req->reply_len; |
1526 | recv_byte(); |
1527 | } |
1528 | break; |
1529 | |
1530 | case intack: |
1531 | data_index = 0; |
1532 | data_len = -1; |
1533 | pmu_state = reading_intr; |
1534 | reply_ptr = interrupt_data[int_data_last]; |
1535 | recv_byte(); |
1536 | if (gpio_irq >= 0 && !gpio_irq_enabled) { |
1537 | enable_irq(gpio_irq); |
1538 | gpio_irq_enabled = 1; |
1539 | } |
1540 | break; |
1541 | |
1542 | case reading: |
1543 | case reading_intr: |
1544 | if (data_len == -1) { |
1545 | data_len = bite; |
1546 | if (bite > 32) |
1547 | printk(KERN_ERR "PMU: bad reply len %d\n", bite); |
1548 | } else if (data_index < 32) { |
1549 | reply_ptr[data_index++] = bite; |
1550 | } |
1551 | if (data_index < data_len) { |
1552 | recv_byte(); |
1553 | break; |
1554 | } |
1555 | |
1556 | if (pmu_state == reading_intr) { |
1557 | pmu_state = idle; |
1558 | int_data_state[int_data_last] = int_data_ready; |
1559 | interrupt_data_len[int_data_last] = data_len; |
1560 | } else { |
1561 | req = current_req; |
1562 | /* |
1563 | * For PMU sleep and freq change requests, we lock the |
1564 | * PMU until it's explicitly unlocked. This avoids any |
1565 | * spurrious event polling getting in |
1566 | */ |
1567 | current_req = req->next; |
1568 | req->reply_len += data_index; |
1569 | if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED) |
1570 | pmu_state = locked; |
1571 | else |
1572 | pmu_state = idle; |
1573 | return req; |
1574 | } |
1575 | break; |
1576 | |
1577 | default: |
1578 | printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n", |
1579 | pmu_state); |
1580 | } |
1581 | return NULL; |
1582 | } |
1583 | |
1584 | static irqreturn_t |
1585 | via_pmu_interrupt(int irq, void *arg) |
1586 | { |
1587 | unsigned long flags; |
1588 | int intr; |
1589 | int nloop = 0; |
1590 | int int_data = -1; |
1591 | struct adb_request *req = NULL; |
1592 | int handled = 0; |
1593 | |
1594 | /* This is a bit brutal, we can probably do better */ |
1595 | spin_lock_irqsave(&pmu_lock, flags); |
1596 | ++disable_poll; |
1597 | |
1598 | for (;;) { |
1599 | /* On 68k Macs, VIA interrupts are dispatched individually. |
1600 | * Unless we are polling, the relevant IRQ flag has already |
1601 | * been cleared. |
1602 | */ |
1603 | intr = 0; |
1604 | if (IS_ENABLED(CONFIG_PPC_PMAC) || !irq) { |
1605 | intr = in_8(&via1[IFR]) & (SR_INT | CB1_INT); |
1606 | out_8(&via1[IFR], intr); |
1607 | } |
1608 | #ifndef CONFIG_PPC_PMAC |
1609 | switch (irq) { |
1610 | case IRQ_MAC_ADB_CL: |
1611 | intr = CB1_INT; |
1612 | break; |
1613 | case IRQ_MAC_ADB_SR: |
1614 | intr = SR_INT; |
1615 | break; |
1616 | } |
1617 | #endif |
1618 | if (intr == 0) |
1619 | break; |
1620 | handled = 1; |
1621 | if (++nloop > 1000) { |
1622 | printk(KERN_DEBUG "PMU: stuck in intr loop, " |
1623 | "intr=%x, ier=%x pmu_state=%d\n", |
1624 | intr, in_8(&via1[IER]), pmu_state); |
1625 | break; |
1626 | } |
1627 | if (intr & CB1_INT) { |
1628 | adb_int_pending = 1; |
1629 | pmu_irq_stats[11]++; |
1630 | } |
1631 | if (intr & SR_INT) { |
1632 | req = pmu_sr_intr(); |
1633 | if (req) |
1634 | break; |
1635 | } |
1636 | #ifndef CONFIG_PPC_PMAC |
1637 | break; |
1638 | #endif |
1639 | } |
1640 | |
1641 | recheck: |
1642 | if (pmu_state == idle) { |
1643 | if (adb_int_pending) { |
1644 | if (int_data_state[0] == int_data_empty) |
1645 | int_data_last = 0; |
1646 | else if (int_data_state[1] == int_data_empty) |
1647 | int_data_last = 1; |
1648 | else |
1649 | goto no_free_slot; |
1650 | pmu_state = intack; |
1651 | int_data_state[int_data_last] = int_data_fill; |
1652 | /* Sounds safer to make sure ACK is high before writing. |
1653 | * This helped kill a problem with ADB and some iBooks |
1654 | */ |
1655 | wait_for_ack(); |
1656 | send_byte(PMU_INT_ACK); |
1657 | adb_int_pending = 0; |
1658 | } else if (current_req) |
1659 | pmu_start(); |
1660 | } |
1661 | no_free_slot: |
1662 | /* Mark the oldest buffer for flushing */ |
1663 | if (int_data_state[!int_data_last] == int_data_ready) { |
1664 | int_data_state[!int_data_last] = int_data_flush; |
1665 | int_data = !int_data_last; |
1666 | } else if (int_data_state[int_data_last] == int_data_ready) { |
1667 | int_data_state[int_data_last] = int_data_flush; |
1668 | int_data = int_data_last; |
1669 | } |
1670 | --disable_poll; |
1671 | spin_unlock_irqrestore(&pmu_lock, flags); |
1672 | |
1673 | /* Deal with completed PMU requests outside of the lock */ |
1674 | if (req) { |
1675 | pmu_done(req); |
1676 | req = NULL; |
1677 | } |
1678 | |
1679 | /* Deal with interrupt datas outside of the lock */ |
1680 | if (int_data >= 0) { |
1681 | pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data]); |
1682 | spin_lock_irqsave(&pmu_lock, flags); |
1683 | ++disable_poll; |
1684 | int_data_state[int_data] = int_data_empty; |
1685 | int_data = -1; |
1686 | goto recheck; |
1687 | } |
1688 | |
1689 | return IRQ_RETVAL(handled); |
1690 | } |
1691 | |
1692 | void |
1693 | pmu_unlock(void) |
1694 | { |
1695 | unsigned long flags; |
1696 | |
1697 | spin_lock_irqsave(&pmu_lock, flags); |
1698 | if (pmu_state == locked) |
1699 | pmu_state = idle; |
1700 | adb_int_pending = 1; |
1701 | spin_unlock_irqrestore(&pmu_lock, flags); |
1702 | } |
1703 | |
1704 | |
1705 | static __maybe_unused irqreturn_t |
1706 | gpio1_interrupt(int irq, void *arg) |
1707 | { |
1708 | unsigned long flags; |
1709 | |
1710 | if ((in_8(gpio_reg + 0x9) & 0x02) == 0) { |
1711 | spin_lock_irqsave(&pmu_lock, flags); |
1712 | if (gpio_irq_enabled > 0) { |
1713 | disable_irq_nosync(gpio_irq); |
1714 | gpio_irq_enabled = 0; |
1715 | } |
1716 | pmu_irq_stats[12]++; |
1717 | adb_int_pending = 1; |
1718 | spin_unlock_irqrestore(&pmu_lock, flags); |
1719 | via_pmu_interrupt(0, NULL); |
1720 | return IRQ_HANDLED; |
1721 | } |
1722 | return IRQ_NONE; |
1723 | } |
1724 | |
1725 | void |
1726 | pmu_enable_irled(int on) |
1727 | { |
1728 | struct adb_request req; |
1729 | |
1730 | if (pmu_state == uninitialized) |
1731 | return ; |
1732 | if (pmu_kind == PMU_KEYLARGO_BASED) |
1733 | return ; |
1734 | |
1735 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED | |
1736 | (on ? PMU_POW_ON : PMU_POW_OFF)); |
1737 | pmu_wait_complete(&req); |
1738 | } |
1739 | |
1740 | /* Offset between Unix time (1970-based) and Mac time (1904-based) */ |
1741 | #define RTC_OFFSET 2082844800 |
1742 | |
1743 | time64_t pmu_get_time(void) |
1744 | { |
1745 | struct adb_request req; |
1746 | u32 now; |
1747 | |
1748 | if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0) |
1749 | return 0; |
1750 | pmu_wait_complete(&req); |
1751 | if (req.reply_len != 4) |
1752 | pr_err("%s: got %d byte reply\n", __func__, req.reply_len); |
1753 | now = (req.reply[0] << 24) + (req.reply[1] << 16) + |
1754 | (req.reply[2] << 8) + req.reply[3]; |
1755 | return (time64_t)now - RTC_OFFSET; |
1756 | } |
1757 | |
1758 | int pmu_set_rtc_time(struct rtc_time *tm) |
1759 | { |
1760 | u32 now; |
1761 | struct adb_request req; |
1762 | |
1763 | now = lower_32_bits(rtc_tm_to_time64(tm) + RTC_OFFSET); |
1764 | if (pmu_request(&req, NULL, 5, PMU_SET_RTC, |
1765 | now >> 24, now >> 16, now >> 8, now) < 0) |
1766 | return -ENXIO; |
1767 | pmu_wait_complete(&req); |
1768 | if (req.reply_len != 0) |
1769 | pr_err("%s: got %d byte reply\n", __func__, req.reply_len); |
1770 | return 0; |
1771 | } |
1772 | |
1773 | void |
1774 | pmu_restart(void) |
1775 | { |
1776 | struct adb_request req; |
1777 | |
1778 | if (pmu_state == uninitialized) |
1779 | return; |
1780 | |
1781 | local_irq_disable(); |
1782 | |
1783 | drop_interrupts = 1; |
1784 | |
1785 | if (pmu_kind != PMU_KEYLARGO_BASED) { |
1786 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB | |
1787 | PMU_INT_TICK ); |
1788 | while(!req.complete) |
1789 | pmu_poll(); |
1790 | } |
1791 | |
1792 | pmu_request(&req, NULL, 1, PMU_RESET); |
1793 | pmu_wait_complete(&req); |
1794 | for (;;) |
1795 | ; |
1796 | } |
1797 | |
1798 | void |
1799 | pmu_shutdown(void) |
1800 | { |
1801 | struct adb_request req; |
1802 | |
1803 | if (pmu_state == uninitialized) |
1804 | return; |
1805 | |
1806 | local_irq_disable(); |
1807 | |
1808 | drop_interrupts = 1; |
1809 | |
1810 | if (pmu_kind != PMU_KEYLARGO_BASED) { |
1811 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB | |
1812 | PMU_INT_TICK ); |
1813 | pmu_wait_complete(&req); |
1814 | } else { |
1815 | /* Disable server mode on shutdown or we'll just |
1816 | * wake up again |
1817 | */ |
1818 | pmu_set_server_mode(0); |
1819 | } |
1820 | |
1821 | pmu_request(&req, NULL, 5, PMU_SHUTDOWN, |
1822 | 'M', 'A', 'T', 'T'); |
1823 | pmu_wait_complete(&req); |
1824 | for (;;) |
1825 | ; |
1826 | } |
1827 | |
1828 | int |
1829 | pmu_present(void) |
1830 | { |
1831 | return pmu_state != uninitialized; |
1832 | } |
1833 | |
1834 | #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) |
1835 | /* |
1836 | * Put the powerbook to sleep. |
1837 | */ |
1838 | |
1839 | static u32 save_via[8]; |
1840 | |
1841 | static void |
1842 | save_via_state(void) |
1843 | { |
1844 | save_via[0] = in_8(&via1[ANH]); |
1845 | save_via[1] = in_8(&via1[DIRA]); |
1846 | save_via[2] = in_8(&via1[B]); |
1847 | save_via[3] = in_8(&via1[DIRB]); |
1848 | save_via[4] = in_8(&via1[PCR]); |
1849 | save_via[5] = in_8(&via1[ACR]); |
1850 | save_via[6] = in_8(&via1[T1CL]); |
1851 | save_via[7] = in_8(&via1[T1CH]); |
1852 | } |
1853 | static void |
1854 | restore_via_state(void) |
1855 | { |
1856 | out_8(&via1[ANH], save_via[0]); |
1857 | out_8(&via1[DIRA], save_via[1]); |
1858 | out_8(&via1[B], save_via[2]); |
1859 | out_8(&via1[DIRB], save_via[3]); |
1860 | out_8(&via1[PCR], save_via[4]); |
1861 | out_8(&via1[ACR], save_via[5]); |
1862 | out_8(&via1[T1CL], save_via[6]); |
1863 | out_8(&via1[T1CH], save_via[7]); |
1864 | out_8(&via1[IER], IER_CLR | 0x7f); /* disable all intrs */ |
1865 | out_8(&via1[IFR], 0x7f); /* clear IFR */ |
1866 | out_8(&via1[IER], IER_SET | SR_INT | CB1_INT); |
1867 | } |
1868 | |
1869 | #define GRACKLE_PM (1<<7) |
1870 | #define GRACKLE_DOZE (1<<5) |
1871 | #define GRACKLE_NAP (1<<4) |
1872 | #define GRACKLE_SLEEP (1<<3) |
1873 | |
1874 | static int powerbook_sleep_grackle(void) |
1875 | { |
1876 | unsigned long save_l2cr; |
1877 | unsigned short pmcr1; |
1878 | struct adb_request req; |
1879 | struct pci_dev *grackle; |
1880 | |
1881 | grackle = pci_get_domain_bus_and_slot(0, 0, 0); |
1882 | if (!grackle) |
1883 | return -ENODEV; |
1884 | |
1885 | /* Turn off various things. Darwin does some retry tests here... */ |
1886 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE); |
1887 | pmu_wait_complete(&req); |
1888 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL, |
1889 | PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY); |
1890 | pmu_wait_complete(&req); |
1891 | |
1892 | /* For 750, save backside cache setting and disable it */ |
1893 | save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ |
1894 | |
1895 | if (!__fake_sleep) { |
1896 | /* Ask the PMU to put us to sleep */ |
1897 | pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); |
1898 | pmu_wait_complete(&req); |
1899 | } |
1900 | |
1901 | /* The VIA is supposed not to be restored correctly*/ |
1902 | save_via_state(); |
1903 | /* We shut down some HW */ |
1904 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1); |
1905 | |
1906 | pci_read_config_word(grackle, 0x70, &pmcr1); |
1907 | /* Apparently, MacOS uses NAP mode for Grackle ??? */ |
1908 | pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP); |
1909 | pmcr1 |= GRACKLE_PM|GRACKLE_NAP; |
1910 | pci_write_config_word(grackle, 0x70, pmcr1); |
1911 | |
1912 | /* Call low-level ASM sleep handler */ |
1913 | if (__fake_sleep) |
1914 | mdelay(5000); |
1915 | else |
1916 | low_sleep_handler(); |
1917 | |
1918 | /* We're awake again, stop grackle PM */ |
1919 | pci_read_config_word(grackle, 0x70, &pmcr1); |
1920 | pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP); |
1921 | pci_write_config_word(grackle, 0x70, pmcr1); |
1922 | |
1923 | pci_dev_put(grackle); |
1924 | |
1925 | /* Make sure the PMU is idle */ |
1926 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0); |
1927 | restore_via_state(); |
1928 | |
1929 | /* Restore L2 cache */ |
1930 | if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) |
1931 | _set_L2CR(save_l2cr); |
1932 | |
1933 | /* Restore userland MMU context */ |
1934 | switch_mmu_context(NULL, current->active_mm, NULL); |
1935 | |
1936 | /* Power things up */ |
1937 | pmu_unlock(); |
1938 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); |
1939 | pmu_wait_complete(&req); |
1940 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, |
1941 | PMU_POW0_ON|PMU_POW0_HARD_DRIVE); |
1942 | pmu_wait_complete(&req); |
1943 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL, |
1944 | PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY); |
1945 | pmu_wait_complete(&req); |
1946 | |
1947 | return 0; |
1948 | } |
1949 | |
1950 | static int |
1951 | powerbook_sleep_Core99(void) |
1952 | { |
1953 | unsigned long save_l2cr; |
1954 | unsigned long save_l3cr; |
1955 | struct adb_request req; |
1956 | |
1957 | if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) { |
1958 | printk(KERN_ERR "Sleep mode not supported on this machine\n"); |
1959 | return -ENOSYS; |
1960 | } |
1961 | |
1962 | if (num_online_cpus() > 1 || cpu_is_offline(0)) |
1963 | return -EAGAIN; |
1964 | |
1965 | /* Stop environment and ADB interrupts */ |
1966 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0); |
1967 | pmu_wait_complete(&req); |
1968 | |
1969 | /* Tell PMU what events will wake us up */ |
1970 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS, |
1971 | 0xff, 0xff); |
1972 | pmu_wait_complete(&req); |
1973 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS, |
1974 | 0, PMU_PWR_WAKEUP_KEY | |
1975 | (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0)); |
1976 | pmu_wait_complete(&req); |
1977 | |
1978 | /* Save the state of the L2 and L3 caches */ |
1979 | save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ |
1980 | save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ |
1981 | |
1982 | if (!__fake_sleep) { |
1983 | /* Ask the PMU to put us to sleep */ |
1984 | pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); |
1985 | pmu_wait_complete(&req); |
1986 | } |
1987 | |
1988 | /* The VIA is supposed not to be restored correctly*/ |
1989 | save_via_state(); |
1990 | |
1991 | /* Shut down various ASICs. There's a chance that we can no longer |
1992 | * talk to the PMU after this, so I moved it to _after_ sending the |
1993 | * sleep command to it. Still need to be checked. |
1994 | */ |
1995 | pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1); |
1996 | |
1997 | /* Call low-level ASM sleep handler */ |
1998 | if (__fake_sleep) |
1999 | mdelay(5000); |
2000 | else |
2001 | low_sleep_handler(); |
2002 | |
2003 | /* Restore Apple core ASICs state */ |
2004 | pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0); |
2005 | |
2006 | /* Restore VIA */ |
2007 | restore_via_state(); |
2008 | |
2009 | /* tweak LPJ before cpufreq is there */ |
2010 | loops_per_jiffy *= 2; |
2011 | |
2012 | /* Restore video */ |
2013 | pmac_call_early_video_resume(); |
2014 | |
2015 | /* Restore L2 cache */ |
2016 | if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) |
2017 | _set_L2CR(save_l2cr); |
2018 | /* Restore L3 cache */ |
2019 | if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0) |
2020 | _set_L3CR(save_l3cr); |
2021 | |
2022 | /* Restore userland MMU context */ |
2023 | switch_mmu_context(NULL, current->active_mm, NULL); |
2024 | |
2025 | /* Tell PMU we are ready */ |
2026 | pmu_unlock(); |
2027 | pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); |
2028 | pmu_wait_complete(&req); |
2029 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); |
2030 | pmu_wait_complete(&req); |
2031 | |
2032 | /* Restore LPJ, cpufreq will adjust the cpu frequency */ |
2033 | loops_per_jiffy /= 2; |
2034 | |
2035 | return 0; |
2036 | } |
2037 | |
2038 | #define PB3400_MEM_CTRL 0xf8000000 |
2039 | #define PB3400_MEM_CTRL_SLEEP 0x70 |
2040 | |
2041 | static void __iomem *pb3400_mem_ctrl; |
2042 | |
2043 | static void powerbook_sleep_init_3400(void) |
2044 | { |
2045 | /* map in the memory controller registers */ |
2046 | pb3400_mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100); |
2047 | if (pb3400_mem_ctrl == NULL) |
2048 | printk(KERN_WARNING "ioremap failed: sleep won't be possible"); |
2049 | } |
2050 | |
2051 | static int powerbook_sleep_3400(void) |
2052 | { |
2053 | int i, x; |
2054 | unsigned int hid0; |
2055 | unsigned long msr; |
2056 | struct adb_request sleep_req; |
2057 | unsigned int __iomem *mem_ctrl_sleep; |
2058 | |
2059 | if (pb3400_mem_ctrl == NULL) |
2060 | return -ENOMEM; |
2061 | mem_ctrl_sleep = pb3400_mem_ctrl + PB3400_MEM_CTRL_SLEEP; |
2062 | |
2063 | /* Set the memory controller to keep the memory refreshed |
2064 | while we're asleep */ |
2065 | for (i = 0x403f; i >= 0x4000; --i) { |
2066 | out_be32(mem_ctrl_sleep, i); |
2067 | do { |
2068 | x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff; |
2069 | } while (x == 0); |
2070 | if (x >= 0x100) |
2071 | break; |
2072 | } |
2073 | |
2074 | /* Ask the PMU to put us to sleep */ |
2075 | pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); |
2076 | pmu_wait_complete(&sleep_req); |
2077 | pmu_unlock(); |
2078 | |
2079 | pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1); |
2080 | |
2081 | asleep = 1; |
2082 | |
2083 | /* Put the CPU into sleep mode */ |
2084 | hid0 = mfspr(SPRN_HID0); |
2085 | hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP; |
2086 | mtspr(SPRN_HID0, hid0); |
2087 | local_irq_enable(); |
2088 | msr = mfmsr() | MSR_POW; |
2089 | while (asleep) { |
2090 | mb(); |
2091 | mtmsr(msr); |
2092 | isync(); |
2093 | } |
2094 | local_irq_disable(); |
2095 | |
2096 | /* OK, we're awake again, start restoring things */ |
2097 | out_be32(mem_ctrl_sleep, 0x3f); |
2098 | pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0); |
2099 | |
2100 | return 0; |
2101 | } |
2102 | |
2103 | #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */ |
2104 | |
2105 | /* |
2106 | * Support for /dev/pmu device |
2107 | */ |
2108 | #define RB_SIZE 0x10 |
2109 | struct pmu_private { |
2110 | struct list_head list; |
2111 | int rb_get; |
2112 | int rb_put; |
2113 | struct rb_entry { |
2114 | unsigned short len; |
2115 | unsigned char data[16]; |
2116 | } rb_buf[RB_SIZE]; |
2117 | wait_queue_head_t wait; |
2118 | spinlock_t lock; |
2119 | #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) |
2120 | int backlight_locker; |
2121 | #endif |
2122 | }; |
2123 | |
2124 | static LIST_HEAD(all_pmu_pvt); |
2125 | static DEFINE_SPINLOCK(all_pvt_lock); |
2126 | |
2127 | static void |
2128 | pmu_pass_intr(unsigned char *data, int len) |
2129 | { |
2130 | struct pmu_private *pp; |
2131 | struct list_head *list; |
2132 | int i; |
2133 | unsigned long flags; |
2134 | |
2135 | if (len > sizeof(pp->rb_buf[0].data)) |
2136 | len = sizeof(pp->rb_buf[0].data); |
2137 | spin_lock_irqsave(&all_pvt_lock, flags); |
2138 | for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) { |
2139 | pp = list_entry(list, struct pmu_private, list); |
2140 | spin_lock(&pp->lock); |
2141 | i = pp->rb_put + 1; |
2142 | if (i >= RB_SIZE) |
2143 | i = 0; |
2144 | if (i != pp->rb_get) { |
2145 | struct rb_entry *rp = &pp->rb_buf[pp->rb_put]; |
2146 | rp->len = len; |
2147 | memcpy(rp->data, data, len); |
2148 | pp->rb_put = i; |
2149 | wake_up_interruptible(&pp->wait); |
2150 | } |
2151 | spin_unlock(&pp->lock); |
2152 | } |
2153 | spin_unlock_irqrestore(&all_pvt_lock, flags); |
2154 | } |
2155 | |
2156 | static int |
2157 | pmu_open(struct inode *inode, struct file *file) |
2158 | { |
2159 | struct pmu_private *pp; |
2160 | unsigned long flags; |
2161 | |
2162 | pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL); |
2163 | if (!pp) |
2164 | return -ENOMEM; |
2165 | pp->rb_get = pp->rb_put = 0; |
2166 | spin_lock_init(&pp->lock); |
2167 | init_waitqueue_head(&pp->wait); |
2168 | mutex_lock(&pmu_info_proc_mutex); |
2169 | spin_lock_irqsave(&all_pvt_lock, flags); |
2170 | #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) |
2171 | pp->backlight_locker = 0; |
2172 | #endif |
2173 | list_add(&pp->list, &all_pmu_pvt); |
2174 | spin_unlock_irqrestore(&all_pvt_lock, flags); |
2175 | file->private_data = pp; |
2176 | mutex_unlock(&pmu_info_proc_mutex); |
2177 | return 0; |
2178 | } |
2179 | |
2180 | static ssize_t |
2181 | pmu_read(struct file *file, char __user *buf, |
2182 | size_t count, loff_t *ppos) |
2183 | { |
2184 | struct pmu_private *pp = file->private_data; |
2185 | DECLARE_WAITQUEUE(wait, current); |
2186 | unsigned long flags; |
2187 | int ret = 0; |
2188 | |
2189 | if (count < 1 || !pp) |
2190 | return -EINVAL; |
2191 | if (!access_ok(buf, count)) |
2192 | return -EFAULT; |
2193 | |
2194 | spin_lock_irqsave(&pp->lock, flags); |
2195 | add_wait_queue(&pp->wait, &wait); |
2196 | set_current_state(TASK_INTERRUPTIBLE); |
2197 | |
2198 | for (;;) { |
2199 | ret = -EAGAIN; |
2200 | if (pp->rb_get != pp->rb_put) { |
2201 | int i = pp->rb_get; |
2202 | struct rb_entry *rp = &pp->rb_buf[i]; |
2203 | ret = rp->len; |
2204 | spin_unlock_irqrestore(&pp->lock, flags); |
2205 | if (ret > count) |
2206 | ret = count; |
2207 | if (ret > 0 && copy_to_user(buf, rp->data, ret)) |
2208 | ret = -EFAULT; |
2209 | if (++i >= RB_SIZE) |
2210 | i = 0; |
2211 | spin_lock_irqsave(&pp->lock, flags); |
2212 | pp->rb_get = i; |
2213 | } |
2214 | if (ret >= 0) |
2215 | break; |
2216 | if (file->f_flags & O_NONBLOCK) |
2217 | break; |
2218 | ret = -ERESTARTSYS; |
2219 | if (signal_pending(current)) |
2220 | break; |
2221 | spin_unlock_irqrestore(&pp->lock, flags); |
2222 | schedule(); |
2223 | spin_lock_irqsave(&pp->lock, flags); |
2224 | } |
2225 | __set_current_state(TASK_RUNNING); |
2226 | remove_wait_queue(&pp->wait, &wait); |
2227 | spin_unlock_irqrestore(&pp->lock, flags); |
2228 | |
2229 | return ret; |
2230 | } |
2231 | |
2232 | static ssize_t |
2233 | pmu_write(struct file *file, const char __user *buf, |
2234 | size_t count, loff_t *ppos) |
2235 | { |
2236 | return 0; |
2237 | } |
2238 | |
2239 | static __poll_t |
2240 | pmu_fpoll(struct file *filp, poll_table *wait) |
2241 | { |
2242 | struct pmu_private *pp = filp->private_data; |
2243 | __poll_t mask = 0; |
2244 | unsigned long flags; |
2245 | |
2246 | if (!pp) |
2247 | return 0; |
2248 | poll_wait(filp, &pp->wait, wait); |
2249 | spin_lock_irqsave(&pp->lock, flags); |
2250 | if (pp->rb_get != pp->rb_put) |
2251 | mask |= EPOLLIN; |
2252 | spin_unlock_irqrestore(&pp->lock, flags); |
2253 | return mask; |
2254 | } |
2255 | |
2256 | static int |
2257 | pmu_release(struct inode *inode, struct file *file) |
2258 | { |
2259 | struct pmu_private *pp = file->private_data; |
2260 | unsigned long flags; |
2261 | |
2262 | if (pp) { |
2263 | file->private_data = NULL; |
2264 | spin_lock_irqsave(&all_pvt_lock, flags); |
2265 | list_del(&pp->list); |
2266 | spin_unlock_irqrestore(&all_pvt_lock, flags); |
2267 | |
2268 | #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) |
2269 | if (pp->backlight_locker) |
2270 | pmac_backlight_enable(); |
2271 | #endif |
2272 | |
2273 | kfree(pp); |
2274 | } |
2275 | return 0; |
2276 | } |
2277 | |
2278 | #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) |
2279 | static void pmac_suspend_disable_irqs(void) |
2280 | { |
2281 | /* Call platform functions marked "on sleep" */ |
2282 | pmac_pfunc_i2c_suspend(); |
2283 | pmac_pfunc_base_suspend(); |
2284 | } |
2285 | |
2286 | static int powerbook_sleep(suspend_state_t state) |
2287 | { |
2288 | int error = 0; |
2289 | |
2290 | /* Wait for completion of async requests */ |
2291 | while (!batt_req.complete) |
2292 | pmu_poll(); |
2293 | |
2294 | /* Giveup the lazy FPU & vec so we don't have to back them |
2295 | * up from the low level code |
2296 | */ |
2297 | enable_kernel_fp(); |
2298 | |
2299 | #ifdef CONFIG_ALTIVEC |
2300 | if (cpu_has_feature(CPU_FTR_ALTIVEC)) |
2301 | enable_kernel_altivec(); |
2302 | #endif /* CONFIG_ALTIVEC */ |
2303 | |
2304 | switch (pmu_kind) { |
2305 | case PMU_OHARE_BASED: |
2306 | error = powerbook_sleep_3400(); |
2307 | break; |
2308 | case PMU_HEATHROW_BASED: |
2309 | case PMU_PADDINGTON_BASED: |
2310 | error = powerbook_sleep_grackle(); |
2311 | break; |
2312 | case PMU_KEYLARGO_BASED: |
2313 | error = powerbook_sleep_Core99(); |
2314 | break; |
2315 | default: |
2316 | return -ENOSYS; |
2317 | } |
2318 | |
2319 | if (error) |
2320 | return error; |
2321 | |
2322 | mdelay(100); |
2323 | |
2324 | return 0; |
2325 | } |
2326 | |
2327 | static void pmac_suspend_enable_irqs(void) |
2328 | { |
2329 | /* Force a poll of ADB interrupts */ |
2330 | adb_int_pending = 1; |
2331 | via_pmu_interrupt(0, NULL); |
2332 | |
2333 | mdelay(10); |
2334 | |
2335 | /* Call platform functions marked "on wake" */ |
2336 | pmac_pfunc_base_resume(); |
2337 | pmac_pfunc_i2c_resume(); |
2338 | } |
2339 | |
2340 | static int pmu_sleep_valid(suspend_state_t state) |
2341 | { |
2342 | return state == PM_SUSPEND_MEM |
2343 | && (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) >= 0); |
2344 | } |
2345 | |
2346 | static const struct platform_suspend_ops pmu_pm_ops = { |
2347 | .enter = powerbook_sleep, |
2348 | .valid = pmu_sleep_valid, |
2349 | }; |
2350 | |
2351 | static int register_pmu_pm_ops(void) |
2352 | { |
2353 | if (pmu_kind == PMU_OHARE_BASED) |
2354 | powerbook_sleep_init_3400(); |
2355 | ppc_md.suspend_disable_irqs = pmac_suspend_disable_irqs; |
2356 | ppc_md.suspend_enable_irqs = pmac_suspend_enable_irqs; |
2357 | suspend_set_ops(&pmu_pm_ops); |
2358 | |
2359 | return 0; |
2360 | } |
2361 | |
2362 | device_initcall(register_pmu_pm_ops); |
2363 | #endif |
2364 | |
2365 | static int pmu_ioctl(struct file *filp, |
2366 | u_int cmd, u_long arg) |
2367 | { |
2368 | __u32 __user *argp = (__u32 __user *)arg; |
2369 | int error = -EINVAL; |
2370 | |
2371 | switch (cmd) { |
2372 | #ifdef CONFIG_PPC_PMAC |
2373 | case PMU_IOC_SLEEP: |
2374 | if (!capable(CAP_SYS_ADMIN)) |
2375 | return -EACCES; |
2376 | return pm_suspend(PM_SUSPEND_MEM); |
2377 | case PMU_IOC_CAN_SLEEP: |
2378 | if (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) < 0) |
2379 | return put_user(0, argp); |
2380 | else |
2381 | return put_user(1, argp); |
2382 | #endif |
2383 | |
2384 | #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY |
2385 | /* Compatibility ioctl's for backlight */ |
2386 | case PMU_IOC_GET_BACKLIGHT: |
2387 | { |
2388 | int brightness; |
2389 | |
2390 | brightness = pmac_backlight_get_legacy_brightness(); |
2391 | if (brightness < 0) |
2392 | return brightness; |
2393 | else |
2394 | return put_user(brightness, argp); |
2395 | |
2396 | } |
2397 | case PMU_IOC_SET_BACKLIGHT: |
2398 | { |
2399 | int brightness; |
2400 | |
2401 | error = get_user(brightness, argp); |
2402 | if (error) |
2403 | return error; |
2404 | |
2405 | return pmac_backlight_set_legacy_brightness(brightness); |
2406 | } |
2407 | #ifdef CONFIG_INPUT_ADBHID |
2408 | case PMU_IOC_GRAB_BACKLIGHT: { |
2409 | struct pmu_private *pp = filp->private_data; |
2410 | |
2411 | if (pp->backlight_locker) |
2412 | return 0; |
2413 | |
2414 | pp->backlight_locker = 1; |
2415 | pmac_backlight_disable(); |
2416 | |
2417 | return 0; |
2418 | } |
2419 | #endif /* CONFIG_INPUT_ADBHID */ |
2420 | #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */ |
2421 | |
2422 | case PMU_IOC_GET_MODEL: |
2423 | return put_user(pmu_kind, argp); |
2424 | case PMU_IOC_HAS_ADB: |
2425 | return put_user(pmu_has_adb, argp); |
2426 | } |
2427 | return error; |
2428 | } |
2429 | |
2430 | static long pmu_unlocked_ioctl(struct file *filp, |
2431 | u_int cmd, u_long arg) |
2432 | { |
2433 | int ret; |
2434 | |
2435 | mutex_lock(&pmu_info_proc_mutex); |
2436 | ret = pmu_ioctl(filp, cmd, arg); |
2437 | mutex_unlock(&pmu_info_proc_mutex); |
2438 | |
2439 | return ret; |
2440 | } |
2441 | |
2442 | #ifdef CONFIG_COMPAT |
2443 | #define PMU_IOC_GET_BACKLIGHT32 _IOR('B', 1, compat_size_t) |
2444 | #define PMU_IOC_SET_BACKLIGHT32 _IOW('B', 2, compat_size_t) |
2445 | #define PMU_IOC_GET_MODEL32 _IOR('B', 3, compat_size_t) |
2446 | #define PMU_IOC_HAS_ADB32 _IOR('B', 4, compat_size_t) |
2447 | #define PMU_IOC_CAN_SLEEP32 _IOR('B', 5, compat_size_t) |
2448 | #define PMU_IOC_GRAB_BACKLIGHT32 _IOR('B', 6, compat_size_t) |
2449 | |
2450 | static long compat_pmu_ioctl (struct file *filp, u_int cmd, u_long arg) |
2451 | { |
2452 | switch (cmd) { |
2453 | case PMU_IOC_SLEEP: |
2454 | break; |
2455 | case PMU_IOC_GET_BACKLIGHT32: |
2456 | cmd = PMU_IOC_GET_BACKLIGHT; |
2457 | break; |
2458 | case PMU_IOC_SET_BACKLIGHT32: |
2459 | cmd = PMU_IOC_SET_BACKLIGHT; |
2460 | break; |
2461 | case PMU_IOC_GET_MODEL32: |
2462 | cmd = PMU_IOC_GET_MODEL; |
2463 | break; |
2464 | case PMU_IOC_HAS_ADB32: |
2465 | cmd = PMU_IOC_HAS_ADB; |
2466 | break; |
2467 | case PMU_IOC_CAN_SLEEP32: |
2468 | cmd = PMU_IOC_CAN_SLEEP; |
2469 | break; |
2470 | case PMU_IOC_GRAB_BACKLIGHT32: |
2471 | cmd = PMU_IOC_GRAB_BACKLIGHT; |
2472 | break; |
2473 | default: |
2474 | return -ENOIOCTLCMD; |
2475 | } |
2476 | return pmu_unlocked_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); |
2477 | } |
2478 | #endif |
2479 | |
2480 | static const struct file_operations pmu_device_fops = { |
2481 | .read = pmu_read, |
2482 | .write = pmu_write, |
2483 | .poll = pmu_fpoll, |
2484 | .unlocked_ioctl = pmu_unlocked_ioctl, |
2485 | #ifdef CONFIG_COMPAT |
2486 | .compat_ioctl = compat_pmu_ioctl, |
2487 | #endif |
2488 | .open = pmu_open, |
2489 | .release = pmu_release, |
2490 | .llseek = noop_llseek, |
2491 | }; |
2492 | |
2493 | static struct miscdevice pmu_device = { |
2494 | PMU_MINOR, "pmu", &pmu_device_fops |
2495 | }; |
2496 | |
2497 | static int pmu_device_init(void) |
2498 | { |
2499 | if (pmu_state == uninitialized) |
2500 | return 0; |
2501 | if (misc_register(&pmu_device) < 0) |
2502 | printk(KERN_ERR "via-pmu: cannot register misc device.\n"); |
2503 | return 0; |
2504 | } |
2505 | device_initcall(pmu_device_init); |
2506 | |
2507 | |
2508 | #ifdef DEBUG_SLEEP |
2509 | static inline void |
2510 | polled_handshake(void) |
2511 | { |
2512 | via2[B] &= ~TREQ; eieio(); |
2513 | while ((via2[B] & TACK) != 0) |
2514 | ; |
2515 | via2[B] |= TREQ; eieio(); |
2516 | while ((via2[B] & TACK) == 0) |
2517 | ; |
2518 | } |
2519 | |
2520 | static inline void |
2521 | polled_send_byte(int x) |
2522 | { |
2523 | via1[ACR] |= SR_OUT | SR_EXT; eieio(); |
2524 | via1[SR] = x; eieio(); |
2525 | polled_handshake(); |
2526 | } |
2527 | |
2528 | static inline int |
2529 | polled_recv_byte(void) |
2530 | { |
2531 | int x; |
2532 | |
2533 | via1[ACR] = (via1[ACR] & ~SR_OUT) | SR_EXT; eieio(); |
2534 | x = via1[SR]; eieio(); |
2535 | polled_handshake(); |
2536 | x = via1[SR]; eieio(); |
2537 | return x; |
2538 | } |
2539 | |
2540 | int |
2541 | pmu_polled_request(struct adb_request *req) |
2542 | { |
2543 | unsigned long flags; |
2544 | int i, l, c; |
2545 | |
2546 | req->complete = 1; |
2547 | c = req->data[0]; |
2548 | l = pmu_data_len[c][0]; |
2549 | if (l >= 0 && req->nbytes != l + 1) |
2550 | return -EINVAL; |
2551 | |
2552 | local_irq_save(flags); |
2553 | while (pmu_state != idle) |
2554 | pmu_poll(); |
2555 | |
2556 | while ((via2[B] & TACK) == 0) |
2557 | ; |
2558 | polled_send_byte(c); |
2559 | if (l < 0) { |
2560 | l = req->nbytes - 1; |
2561 | polled_send_byte(l); |
2562 | } |
2563 | for (i = 1; i <= l; ++i) |
2564 | polled_send_byte(req->data[i]); |
2565 | |
2566 | l = pmu_data_len[c][1]; |
2567 | if (l < 0) |
2568 | l = polled_recv_byte(); |
2569 | for (i = 0; i < l; ++i) |
2570 | req->reply[i + req->reply_len] = polled_recv_byte(); |
2571 | |
2572 | if (req->done) |
2573 | (*req->done)(req); |
2574 | |
2575 | local_irq_restore(flags); |
2576 | return 0; |
2577 | } |
2578 | |
2579 | /* N.B. This doesn't work on the 3400 */ |
2580 | void pmu_blink(int n) |
2581 | { |
2582 | struct adb_request req; |
2583 | |
2584 | memset(&req, 0, sizeof(req)); |
2585 | |
2586 | for (; n > 0; --n) { |
2587 | req.nbytes = 4; |
2588 | req.done = NULL; |
2589 | req.data[0] = 0xee; |
2590 | req.data[1] = 4; |
2591 | req.data[2] = 0; |
2592 | req.data[3] = 1; |
2593 | req.reply[0] = ADB_RET_OK; |
2594 | req.reply_len = 1; |
2595 | req.reply_expected = 0; |
2596 | pmu_polled_request(&req); |
2597 | mdelay(50); |
2598 | req.nbytes = 4; |
2599 | req.done = NULL; |
2600 | req.data[0] = 0xee; |
2601 | req.data[1] = 4; |
2602 | req.data[2] = 0; |
2603 | req.data[3] = 0; |
2604 | req.reply[0] = ADB_RET_OK; |
2605 | req.reply_len = 1; |
2606 | req.reply_expected = 0; |
2607 | pmu_polled_request(&req); |
2608 | mdelay(50); |
2609 | } |
2610 | mdelay(50); |
2611 | } |
2612 | #endif /* DEBUG_SLEEP */ |
2613 | |
2614 | #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) |
2615 | int pmu_sys_suspended; |
2616 | |
2617 | static int pmu_syscore_suspend(void) |
2618 | { |
2619 | /* Suspend PMU event interrupts */ |
2620 | pmu_suspend(); |
2621 | pmu_sys_suspended = 1; |
2622 | |
2623 | #ifdef CONFIG_PMAC_BACKLIGHT |
2624 | /* Tell backlight code not to muck around with the chip anymore */ |
2625 | pmu_backlight_set_sleep(1); |
2626 | #endif |
2627 | |
2628 | return 0; |
2629 | } |
2630 | |
2631 | static void pmu_syscore_resume(void) |
2632 | { |
2633 | struct adb_request req; |
2634 | |
2635 | if (!pmu_sys_suspended) |
2636 | return; |
2637 | |
2638 | /* Tell PMU we are ready */ |
2639 | pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); |
2640 | pmu_wait_complete(&req); |
2641 | |
2642 | #ifdef CONFIG_PMAC_BACKLIGHT |
2643 | /* Tell backlight code it can use the chip again */ |
2644 | pmu_backlight_set_sleep(0); |
2645 | #endif |
2646 | /* Resume PMU event interrupts */ |
2647 | pmu_resume(); |
2648 | pmu_sys_suspended = 0; |
2649 | } |
2650 | |
2651 | static struct syscore_ops pmu_syscore_ops = { |
2652 | .suspend = pmu_syscore_suspend, |
2653 | .resume = pmu_syscore_resume, |
2654 | }; |
2655 | |
2656 | static int pmu_syscore_register(void) |
2657 | { |
2658 | register_syscore_ops(&pmu_syscore_ops); |
2659 | |
2660 | return 0; |
2661 | } |
2662 | subsys_initcall(pmu_syscore_register); |
2663 | #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */ |
2664 | |
2665 | EXPORT_SYMBOL(pmu_request); |
2666 | EXPORT_SYMBOL(pmu_queue_request); |
2667 | EXPORT_SYMBOL(pmu_poll); |
2668 | EXPORT_SYMBOL(pmu_poll_adb); |
2669 | EXPORT_SYMBOL(pmu_wait_complete); |
2670 | EXPORT_SYMBOL(pmu_suspend); |
2671 | EXPORT_SYMBOL(pmu_resume); |
2672 | EXPORT_SYMBOL(pmu_unlock); |
2673 | #if defined(CONFIG_PPC32) |
2674 | EXPORT_SYMBOL(pmu_enable_irled); |
2675 | EXPORT_SYMBOL(pmu_battery_count); |
2676 | EXPORT_SYMBOL(pmu_batteries); |
2677 | EXPORT_SYMBOL(pmu_power_flags); |
2678 | #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */ |
2679 | |
2680 |
Warning: That file was not part of the compilation database. It may have many parsing errors.