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