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1da177e4 LT |
1 | /* |
2 | * Device driver for the via-pmu on Apple Powermacs. | |
3 | * | |
4 | * The VIA (versatile interface adapter) interfaces to the PMU, | |
5 | * a 6805 microprocessor core whose primary function is to control | |
6 | * battery charging and system power on the PowerBook 3400 and 2400. | |
7 | * The PMU also controls the ADB (Apple Desktop Bus) which connects | |
8 | * to the keyboard and mouse, as well as the non-volatile RAM | |
9 | * and the RTC (real time clock) chip. | |
10 | * | |
11 | * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi. | |
12 | * Copyright (C) 2001-2002 Benjamin Herrenschmidt | |
13 | * | |
14 | * THIS DRIVER IS BECOMING A TOTAL MESS ! | |
15 | * - Cleanup atomically disabling reply to PMU events after | |
16 | * a sleep or a freq. switch | |
17 | * - Move sleep code out of here to pmac_pm, merge into new | |
18 | * common PM infrastructure | |
1da177e4 LT |
19 | * - Save/Restore PCI space properly |
20 | * | |
21 | */ | |
22 | #include <stdarg.h> | |
1da177e4 LT |
23 | #include <linux/types.h> |
24 | #include <linux/errno.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/sched.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/smp_lock.h> | |
37 | #include <linux/module.h> | |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/pm.h> | |
40 | #include <linux/proc_fs.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/device.h> | |
44 | #include <linux/sysdev.h> | |
45 | #include <linux/suspend.h> | |
46 | #include <linux/syscalls.h> | |
47 | #include <linux/cpu.h> | |
48 | #include <asm/prom.h> | |
49 | #include <asm/machdep.h> | |
50 | #include <asm/io.h> | |
51 | #include <asm/pgtable.h> | |
52 | #include <asm/system.h> | |
53 | #include <asm/sections.h> | |
54 | #include <asm/irq.h> | |
55 | #include <asm/pmac_feature.h> | |
5b9ca526 BH |
56 | #include <asm/pmac_pfunc.h> |
57 | #include <asm/pmac_low_i2c.h> | |
1da177e4 LT |
58 | #include <asm/uaccess.h> |
59 | #include <asm/mmu_context.h> | |
60 | #include <asm/cputable.h> | |
61 | #include <asm/time.h> | |
1da177e4 | 62 | #include <asm/backlight.h> |
1da177e4 | 63 | |
9e8e30a0 JB |
64 | #include "via-pmu-event.h" |
65 | ||
1da177e4 LT |
66 | /* Some compile options */ |
67 | #undef SUSPEND_USES_PMU | |
68 | #define DEBUG_SLEEP | |
69 | #undef HACKED_PCI_SAVE | |
70 | ||
71 | /* Misc minor number allocated for /dev/pmu */ | |
72 | #define PMU_MINOR 154 | |
73 | ||
74 | /* How many iterations between battery polls */ | |
75 | #define BATTERY_POLLING_COUNT 2 | |
76 | ||
77 | static volatile unsigned char __iomem *via; | |
78 | ||
79 | /* VIA registers - spaced 0x200 bytes apart */ | |
80 | #define RS 0x200 /* skip between registers */ | |
81 | #define B 0 /* B-side data */ | |
82 | #define A RS /* A-side data */ | |
83 | #define DIRB (2*RS) /* B-side direction (1=output) */ | |
84 | #define DIRA (3*RS) /* A-side direction (1=output) */ | |
85 | #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */ | |
86 | #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */ | |
87 | #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */ | |
88 | #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */ | |
89 | #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */ | |
90 | #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */ | |
91 | #define SR (10*RS) /* Shift register */ | |
92 | #define ACR (11*RS) /* Auxiliary control register */ | |
93 | #define PCR (12*RS) /* Peripheral control register */ | |
94 | #define IFR (13*RS) /* Interrupt flag register */ | |
95 | #define IER (14*RS) /* Interrupt enable register */ | |
96 | #define ANH (15*RS) /* A-side data, no handshake */ | |
97 | ||
98 | /* Bits in B data register: both active low */ | |
99 | #define TACK 0x08 /* Transfer acknowledge (input) */ | |
100 | #define TREQ 0x10 /* Transfer request (output) */ | |
101 | ||
102 | /* Bits in ACR */ | |
103 | #define SR_CTRL 0x1c /* Shift register control bits */ | |
104 | #define SR_EXT 0x0c /* Shift on external clock */ | |
105 | #define SR_OUT 0x10 /* Shift out if 1 */ | |
106 | ||
107 | /* Bits in IFR and IER */ | |
108 | #define IER_SET 0x80 /* set bits in IER */ | |
109 | #define IER_CLR 0 /* clear bits in IER */ | |
110 | #define SR_INT 0x04 /* Shift register full/empty */ | |
111 | #define CB2_INT 0x08 | |
112 | #define CB1_INT 0x10 /* transition on CB1 input */ | |
113 | ||
114 | static volatile enum pmu_state { | |
115 | idle, | |
116 | sending, | |
117 | intack, | |
118 | reading, | |
119 | reading_intr, | |
120 | locked, | |
121 | } pmu_state; | |
122 | ||
123 | static volatile enum int_data_state { | |
124 | int_data_empty, | |
125 | int_data_fill, | |
126 | int_data_ready, | |
127 | int_data_flush | |
128 | } int_data_state[2] = { int_data_empty, int_data_empty }; | |
129 | ||
130 | static struct adb_request *current_req; | |
131 | static struct adb_request *last_req; | |
132 | static struct adb_request *req_awaiting_reply; | |
133 | static unsigned char interrupt_data[2][32]; | |
134 | static int interrupt_data_len[2]; | |
135 | static int int_data_last; | |
136 | static unsigned char *reply_ptr; | |
137 | static int data_index; | |
138 | static int data_len; | |
139 | static volatile int adb_int_pending; | |
140 | static volatile int disable_poll; | |
1da177e4 LT |
141 | static struct device_node *vias; |
142 | static int pmu_kind = PMU_UNKNOWN; | |
143 | static int pmu_fully_inited = 0; | |
144 | static int pmu_has_adb; | |
51d3082f | 145 | static struct device_node *gpio_node; |
1da177e4 | 146 | static unsigned char __iomem *gpio_reg = NULL; |
0ebfff14 | 147 | static int gpio_irq = NO_IRQ; |
1da177e4 LT |
148 | static int gpio_irq_enabled = -1; |
149 | static volatile int pmu_suspended = 0; | |
150 | static spinlock_t pmu_lock; | |
151 | static u8 pmu_intr_mask; | |
152 | static int pmu_version; | |
153 | static int drop_interrupts; | |
a0005034 | 154 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 | 155 | static int option_lid_wakeup = 1; |
a0005034 | 156 | #endif /* CONFIG_PM && CONFIG_PPC32 */ |
5474c120 | 157 | #if (defined(CONFIG_PM)&&defined(CONFIG_PPC32))||defined(CONFIG_PMAC_BACKLIGHT_LEGACY) |
a04c8780 | 158 | static int sleep_in_progress; |
57ae595f | 159 | #endif |
1da177e4 LT |
160 | static unsigned long async_req_locks; |
161 | static unsigned int pmu_irq_stats[11]; | |
162 | ||
163 | static struct proc_dir_entry *proc_pmu_root; | |
164 | static struct proc_dir_entry *proc_pmu_info; | |
165 | static struct proc_dir_entry *proc_pmu_irqstats; | |
166 | static struct proc_dir_entry *proc_pmu_options; | |
167 | static int option_server_mode; | |
168 | ||
1da177e4 LT |
169 | int pmu_battery_count; |
170 | int pmu_cur_battery; | |
171 | unsigned int pmu_power_flags; | |
172 | struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; | |
173 | static int query_batt_timer = BATTERY_POLLING_COUNT; | |
174 | static struct adb_request batt_req; | |
175 | static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES]; | |
1da177e4 | 176 | |
1da177e4 LT |
177 | int __fake_sleep; |
178 | int asleep; | |
e041c683 | 179 | BLOCKING_NOTIFIER_HEAD(sleep_notifier_list); |
1da177e4 LT |
180 | |
181 | #ifdef CONFIG_ADB | |
182 | static int adb_dev_map = 0; | |
183 | static int pmu_adb_flags; | |
184 | ||
185 | static int pmu_probe(void); | |
186 | static int pmu_init(void); | |
187 | static int pmu_send_request(struct adb_request *req, int sync); | |
188 | static int pmu_adb_autopoll(int devs); | |
189 | static int pmu_adb_reset_bus(void); | |
190 | #endif /* CONFIG_ADB */ | |
191 | ||
192 | static int init_pmu(void); | |
1da177e4 LT |
193 | static void pmu_start(void); |
194 | static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs); | |
195 | static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs); | |
196 | static int proc_get_info(char *page, char **start, off_t off, | |
197 | int count, int *eof, void *data); | |
198 | static int proc_get_irqstats(char *page, char **start, off_t off, | |
199 | int count, int *eof, void *data); | |
1da177e4 LT |
200 | static void pmu_pass_intr(unsigned char *data, int len); |
201 | static int proc_get_batt(char *page, char **start, off_t off, | |
202 | int count, int *eof, void *data); | |
1da177e4 LT |
203 | static int proc_read_options(char *page, char **start, off_t off, |
204 | int count, int *eof, void *data); | |
205 | static int proc_write_options(struct file *file, const char __user *buffer, | |
206 | unsigned long count, void *data); | |
207 | ||
208 | #ifdef CONFIG_ADB | |
209 | struct adb_driver via_pmu_driver = { | |
210 | "PMU", | |
211 | pmu_probe, | |
212 | pmu_init, | |
213 | pmu_send_request, | |
214 | pmu_adb_autopoll, | |
215 | pmu_poll_adb, | |
216 | pmu_adb_reset_bus | |
217 | }; | |
218 | #endif /* CONFIG_ADB */ | |
219 | ||
220 | extern void low_sleep_handler(void); | |
221 | extern void enable_kernel_altivec(void); | |
222 | extern void enable_kernel_fp(void); | |
223 | ||
224 | #ifdef DEBUG_SLEEP | |
225 | int pmu_polled_request(struct adb_request *req); | |
226 | int pmu_wink(struct adb_request *req); | |
227 | #endif | |
228 | ||
229 | /* | |
230 | * This table indicates for each PMU opcode: | |
231 | * - the number of data bytes to be sent with the command, or -1 | |
232 | * if a length byte should be sent, | |
233 | * - the number of response bytes which the PMU will return, or | |
234 | * -1 if it will send a length byte. | |
235 | */ | |
aacaf9bd | 236 | static const s8 pmu_data_len[256][2] = { |
1da177e4 LT |
237 | /* 0 1 2 3 4 5 6 7 */ |
238 | /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
239 | /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
240 | /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
241 | /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0}, | |
242 | /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
243 | /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1}, | |
244 | /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
245 | /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0}, | |
246 | /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
247 | /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1}, | |
248 | /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0}, | |
249 | /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1}, | |
250 | /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
251 | /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1}, | |
252 | /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
253 | /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1}, | |
254 | /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
255 | /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
256 | /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
257 | /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
258 | /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0}, | |
259 | /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
260 | /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
261 | /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
262 | /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
263 | /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
264 | /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
265 | /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1}, | |
266 | /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0}, | |
267 | /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0}, | |
268 | /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, | |
269 | /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, | |
270 | }; | |
271 | ||
272 | static char *pbook_type[] = { | |
273 | "Unknown PowerBook", | |
274 | "PowerBook 2400/3400/3500(G3)", | |
275 | "PowerBook G3 Series", | |
276 | "1999 PowerBook G3", | |
277 | "Core99" | |
278 | }; | |
279 | ||
51d3082f | 280 | int __init find_via_pmu(void) |
1da177e4 | 281 | { |
cc5d0189 | 282 | u64 taddr; |
018a3d1d | 283 | const u32 *reg; |
51d3082f | 284 | |
1da177e4 LT |
285 | if (via != 0) |
286 | return 1; | |
51d3082f BH |
287 | vias = of_find_node_by_name(NULL, "via-pmu"); |
288 | if (vias == NULL) | |
1da177e4 | 289 | return 0; |
1da177e4 | 290 | |
018a3d1d | 291 | reg = get_property(vias, "reg", NULL); |
51d3082f BH |
292 | if (reg == NULL) { |
293 | printk(KERN_ERR "via-pmu: No \"reg\" property !\n"); | |
294 | goto fail; | |
295 | } | |
296 | taddr = of_translate_address(vias, reg); | |
bb6b9b28 | 297 | if (taddr == OF_BAD_ADDR) { |
51d3082f BH |
298 | printk(KERN_ERR "via-pmu: Can't translate address !\n"); |
299 | goto fail; | |
1da177e4 LT |
300 | } |
301 | ||
302 | spin_lock_init(&pmu_lock); | |
303 | ||
304 | pmu_has_adb = 1; | |
305 | ||
306 | pmu_intr_mask = PMU_INT_PCEJECT | | |
307 | PMU_INT_SNDBRT | | |
308 | PMU_INT_ADB | | |
309 | PMU_INT_TICK; | |
310 | ||
311 | if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0) | |
312 | || device_is_compatible(vias->parent, "ohare"))) | |
313 | pmu_kind = PMU_OHARE_BASED; | |
314 | else if (device_is_compatible(vias->parent, "paddington")) | |
315 | pmu_kind = PMU_PADDINGTON_BASED; | |
316 | else if (device_is_compatible(vias->parent, "heathrow")) | |
317 | pmu_kind = PMU_HEATHROW_BASED; | |
318 | else if (device_is_compatible(vias->parent, "Keylargo") | |
319 | || device_is_compatible(vias->parent, "K2-Keylargo")) { | |
51d3082f | 320 | struct device_node *gpiop; |
cc5d0189 | 321 | u64 gaddr = OF_BAD_ADDR; |
1da177e4 LT |
322 | |
323 | pmu_kind = PMU_KEYLARGO_BASED; | |
324 | pmu_has_adb = (find_type_devices("adb") != NULL); | |
325 | pmu_intr_mask = PMU_INT_PCEJECT | | |
326 | PMU_INT_SNDBRT | | |
327 | PMU_INT_ADB | | |
328 | PMU_INT_TICK | | |
329 | PMU_INT_ENVIRONMENT; | |
330 | ||
51d3082f BH |
331 | gpiop = of_find_node_by_name(NULL, "gpio"); |
332 | if (gpiop) { | |
018a3d1d | 333 | reg = get_property(gpiop, "reg", NULL); |
51d3082f BH |
334 | if (reg) |
335 | gaddr = of_translate_address(gpiop, reg); | |
cc5d0189 | 336 | if (gaddr != OF_BAD_ADDR) |
51d3082f | 337 | gpio_reg = ioremap(gaddr, 0x10); |
1da177e4 | 338 | } |
51d3082f BH |
339 | if (gpio_reg == NULL) |
340 | printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n"); | |
1da177e4 LT |
341 | } else |
342 | pmu_kind = PMU_UNKNOWN; | |
343 | ||
51d3082f BH |
344 | via = ioremap(taddr, 0x2000); |
345 | if (via == NULL) { | |
346 | printk(KERN_ERR "via-pmu: Can't map address !\n"); | |
347 | goto fail; | |
348 | } | |
1da177e4 LT |
349 | |
350 | out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */ | |
351 | out_8(&via[IFR], 0x7f); /* clear IFR */ | |
352 | ||
353 | pmu_state = idle; | |
354 | ||
355 | if (!init_pmu()) { | |
356 | via = NULL; | |
357 | return 0; | |
358 | } | |
359 | ||
bb6b9b28 | 360 | printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n", |
1da177e4 LT |
361 | PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version); |
362 | ||
363 | sys_ctrler = SYS_CTRLER_PMU; | |
364 | ||
365 | return 1; | |
51d3082f BH |
366 | fail: |
367 | of_node_put(vias); | |
368 | vias = NULL; | |
369 | return 0; | |
1da177e4 LT |
370 | } |
371 | ||
372 | #ifdef CONFIG_ADB | |
51d3082f | 373 | static int pmu_probe(void) |
1da177e4 LT |
374 | { |
375 | return vias == NULL? -ENODEV: 0; | |
376 | } | |
377 | ||
51d3082f | 378 | static int __init pmu_init(void) |
1da177e4 LT |
379 | { |
380 | if (vias == NULL) | |
381 | return -ENODEV; | |
382 | return 0; | |
383 | } | |
384 | #endif /* CONFIG_ADB */ | |
385 | ||
386 | /* | |
387 | * We can't wait until pmu_init gets called, that happens too late. | |
388 | * It happens after IDE and SCSI initialization, which can take a few | |
389 | * seconds, and by that time the PMU could have given up on us and | |
390 | * turned us off. | |
391 | * Thus this is called with arch_initcall rather than device_initcall. | |
392 | */ | |
393 | static int __init via_pmu_start(void) | |
394 | { | |
0ebfff14 BH |
395 | unsigned int irq; |
396 | ||
1da177e4 LT |
397 | if (vias == NULL) |
398 | return -ENODEV; | |
399 | ||
1da177e4 | 400 | batt_req.complete = 1; |
1da177e4 | 401 | |
0ebfff14 BH |
402 | irq = irq_of_parse_and_map(vias, 0); |
403 | if (irq == NO_IRQ) { | |
404 | printk(KERN_ERR "via-pmu: can't map interruptn"); | |
405 | return -ENODEV; | |
406 | } | |
407 | if (request_irq(irq, via_pmu_interrupt, 0, "VIA-PMU", (void *)0)) { | |
408 | printk(KERN_ERR "via-pmu: can't request irq %d\n", irq); | |
409 | return -ENODEV; | |
1da177e4 LT |
410 | } |
411 | ||
51d3082f BH |
412 | if (pmu_kind == PMU_KEYLARGO_BASED) { |
413 | gpio_node = of_find_node_by_name(NULL, "extint-gpio1"); | |
414 | if (gpio_node == NULL) | |
415 | gpio_node = of_find_node_by_name(NULL, | |
416 | "pmu-interrupt"); | |
0ebfff14 BH |
417 | if (gpio_node) |
418 | gpio_irq = irq_of_parse_and_map(gpio_node, 0); | |
51d3082f | 419 | |
0ebfff14 | 420 | if (gpio_irq != NO_IRQ) { |
51d3082f BH |
421 | if (request_irq(gpio_irq, gpio1_interrupt, 0, |
422 | "GPIO1 ADB", (void *)0)) | |
423 | printk(KERN_ERR "pmu: can't get irq %d" | |
424 | " (GPIO1)\n", gpio_irq); | |
425 | else | |
426 | gpio_irq_enabled = 1; | |
427 | } | |
1da177e4 LT |
428 | } |
429 | ||
430 | /* Enable interrupts */ | |
431 | out_8(&via[IER], IER_SET | SR_INT | CB1_INT); | |
432 | ||
433 | pmu_fully_inited = 1; | |
434 | ||
435 | /* Make sure PMU settle down before continuing. This is _very_ important | |
436 | * since the IDE probe may shut interrupts down for quite a bit of time. If | |
437 | * a PMU communication is pending while this happens, the PMU may timeout | |
438 | * Not that on Core99 machines, the PMU keeps sending us environement | |
439 | * messages, we should find a way to either fix IDE or make it call | |
440 | * pmu_suspend() before masking interrupts. This can also happens while | |
441 | * scolling with some fbdevs. | |
442 | */ | |
443 | do { | |
444 | pmu_poll(); | |
445 | } while (pmu_state != idle); | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | arch_initcall(via_pmu_start); | |
451 | ||
452 | /* | |
453 | * This has to be done after pci_init, which is a subsys_initcall. | |
454 | */ | |
455 | static int __init via_pmu_dev_init(void) | |
456 | { | |
457 | if (vias == NULL) | |
458 | return -ENODEV; | |
459 | ||
1da177e4 | 460 | #ifdef CONFIG_PMAC_BACKLIGHT |
5474c120 | 461 | /* Initialize backlight */ |
4b755999 | 462 | pmu_backlight_init(); |
5474c120 | 463 | #endif |
1da177e4 | 464 | |
8c870933 | 465 | #ifdef CONFIG_PPC32 |
1da177e4 LT |
466 | if (machine_is_compatible("AAPL,3400/2400") || |
467 | machine_is_compatible("AAPL,3500")) { | |
468 | int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO, | |
469 | NULL, PMAC_MB_INFO_MODEL, 0); | |
470 | pmu_battery_count = 1; | |
471 | if (mb == PMAC_TYPE_COMET) | |
472 | pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET; | |
473 | else | |
474 | pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER; | |
475 | } else if (machine_is_compatible("AAPL,PowerBook1998") || | |
476 | machine_is_compatible("PowerBook1,1")) { | |
477 | pmu_battery_count = 2; | |
478 | pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART; | |
479 | pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART; | |
480 | } else { | |
481 | struct device_node* prim = find_devices("power-mgt"); | |
018a3d1d | 482 | const u32 *prim_info = NULL; |
1da177e4 | 483 | if (prim) |
018a3d1d | 484 | prim_info = get_property(prim, "prim-info", NULL); |
1da177e4 LT |
485 | if (prim_info) { |
486 | /* Other stuffs here yet unknown */ | |
487 | pmu_battery_count = (prim_info[6] >> 16) & 0xff; | |
488 | pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART; | |
489 | if (pmu_battery_count > 1) | |
490 | pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART; | |
491 | } | |
492 | } | |
8c870933 BH |
493 | #endif /* CONFIG_PPC32 */ |
494 | ||
1da177e4 LT |
495 | /* Create /proc/pmu */ |
496 | proc_pmu_root = proc_mkdir("pmu", NULL); | |
497 | if (proc_pmu_root) { | |
8c870933 | 498 | long i; |
1da177e4 LT |
499 | |
500 | for (i=0; i<pmu_battery_count; i++) { | |
501 | char title[16]; | |
8c870933 | 502 | sprintf(title, "battery_%ld", i); |
1da177e4 LT |
503 | proc_pmu_batt[i] = create_proc_read_entry(title, 0, proc_pmu_root, |
504 | proc_get_batt, (void *)i); | |
505 | } | |
1da177e4 LT |
506 | |
507 | proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root, | |
508 | proc_get_info, NULL); | |
509 | proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root, | |
510 | proc_get_irqstats, NULL); | |
511 | proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root); | |
512 | if (proc_pmu_options) { | |
513 | proc_pmu_options->nlink = 1; | |
514 | proc_pmu_options->read_proc = proc_read_options; | |
515 | proc_pmu_options->write_proc = proc_write_options; | |
516 | } | |
517 | } | |
518 | return 0; | |
519 | } | |
520 | ||
521 | device_initcall(via_pmu_dev_init); | |
522 | ||
aacaf9bd | 523 | static int |
1da177e4 LT |
524 | init_pmu(void) |
525 | { | |
526 | int timeout; | |
527 | struct adb_request req; | |
528 | ||
529 | out_8(&via[B], via[B] | TREQ); /* negate TREQ */ | |
530 | out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */ | |
531 | ||
532 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); | |
533 | timeout = 100000; | |
534 | while (!req.complete) { | |
535 | if (--timeout < 0) { | |
536 | printk(KERN_ERR "init_pmu: no response from PMU\n"); | |
537 | return 0; | |
538 | } | |
539 | udelay(10); | |
540 | pmu_poll(); | |
541 | } | |
542 | ||
543 | /* ack all pending interrupts */ | |
544 | timeout = 100000; | |
545 | interrupt_data[0][0] = 1; | |
546 | while (interrupt_data[0][0] || pmu_state != idle) { | |
547 | if (--timeout < 0) { | |
548 | printk(KERN_ERR "init_pmu: timed out acking intrs\n"); | |
549 | return 0; | |
550 | } | |
551 | if (pmu_state == idle) | |
552 | adb_int_pending = 1; | |
553 | via_pmu_interrupt(0, NULL, NULL); | |
554 | udelay(10); | |
555 | } | |
556 | ||
557 | /* Tell PMU we are ready. */ | |
558 | if (pmu_kind == PMU_KEYLARGO_BASED) { | |
559 | pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); | |
560 | while (!req.complete) | |
561 | pmu_poll(); | |
562 | } | |
563 | ||
564 | /* Read PMU version */ | |
565 | pmu_request(&req, NULL, 1, PMU_GET_VERSION); | |
566 | pmu_wait_complete(&req); | |
567 | if (req.reply_len > 0) | |
568 | pmu_version = req.reply[0]; | |
569 | ||
570 | /* Read server mode setting */ | |
571 | if (pmu_kind == PMU_KEYLARGO_BASED) { | |
572 | pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, | |
573 | PMU_PWR_GET_POWERUP_EVENTS); | |
574 | pmu_wait_complete(&req); | |
575 | if (req.reply_len == 2) { | |
576 | if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT) | |
577 | option_server_mode = 1; | |
578 | printk(KERN_INFO "via-pmu: Server Mode is %s\n", | |
579 | option_server_mode ? "enabled" : "disabled"); | |
580 | } | |
581 | } | |
582 | return 1; | |
583 | } | |
584 | ||
585 | int | |
586 | pmu_get_model(void) | |
587 | { | |
588 | return pmu_kind; | |
589 | } | |
590 | ||
1da177e4 LT |
591 | static void pmu_set_server_mode(int server_mode) |
592 | { | |
593 | struct adb_request req; | |
594 | ||
595 | if (pmu_kind != PMU_KEYLARGO_BASED) | |
596 | return; | |
597 | ||
598 | option_server_mode = server_mode; | |
599 | pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS); | |
600 | pmu_wait_complete(&req); | |
601 | if (req.reply_len < 2) | |
602 | return; | |
603 | if (server_mode) | |
604 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, | |
605 | PMU_PWR_SET_POWERUP_EVENTS, | |
606 | req.reply[0], PMU_PWR_WAKEUP_AC_INSERT); | |
607 | else | |
608 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, | |
609 | PMU_PWR_CLR_POWERUP_EVENTS, | |
610 | req.reply[0], PMU_PWR_WAKEUP_AC_INSERT); | |
611 | pmu_wait_complete(&req); | |
612 | } | |
613 | ||
1da177e4 LT |
614 | /* This new version of the code for 2400/3400/3500 powerbooks |
615 | * is inspired from the implementation in gkrellm-pmu | |
616 | */ | |
aacaf9bd | 617 | static void |
1da177e4 LT |
618 | done_battery_state_ohare(struct adb_request* req) |
619 | { | |
620 | /* format: | |
621 | * [0] : flags | |
622 | * 0x01 : AC indicator | |
623 | * 0x02 : charging | |
624 | * 0x04 : battery exist | |
625 | * 0x08 : | |
626 | * 0x10 : | |
627 | * 0x20 : full charged | |
628 | * 0x40 : pcharge reset | |
629 | * 0x80 : battery exist | |
630 | * | |
631 | * [1][2] : battery voltage | |
632 | * [3] : CPU temperature | |
633 | * [4] : battery temperature | |
634 | * [5] : current | |
635 | * [6][7] : pcharge | |
636 | * --tkoba | |
637 | */ | |
638 | unsigned int bat_flags = PMU_BATT_TYPE_HOOPER; | |
639 | long pcharge, charge, vb, vmax, lmax; | |
640 | long vmax_charging, vmax_charged; | |
641 | long amperage, voltage, time, max; | |
642 | int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO, | |
643 | NULL, PMAC_MB_INFO_MODEL, 0); | |
644 | ||
645 | if (req->reply[0] & 0x01) | |
646 | pmu_power_flags |= PMU_PWR_AC_PRESENT; | |
647 | else | |
648 | pmu_power_flags &= ~PMU_PWR_AC_PRESENT; | |
649 | ||
650 | if (mb == PMAC_TYPE_COMET) { | |
651 | vmax_charged = 189; | |
652 | vmax_charging = 213; | |
653 | lmax = 6500; | |
654 | } else { | |
655 | vmax_charged = 330; | |
656 | vmax_charging = 330; | |
657 | lmax = 6500; | |
658 | } | |
659 | vmax = vmax_charged; | |
660 | ||
661 | /* If battery installed */ | |
662 | if (req->reply[0] & 0x04) { | |
663 | bat_flags |= PMU_BATT_PRESENT; | |
664 | if (req->reply[0] & 0x02) | |
665 | bat_flags |= PMU_BATT_CHARGING; | |
666 | vb = (req->reply[1] << 8) | req->reply[2]; | |
667 | voltage = (vb * 265 + 72665) / 10; | |
668 | amperage = req->reply[5]; | |
669 | if ((req->reply[0] & 0x01) == 0) { | |
670 | if (amperage > 200) | |
671 | vb += ((amperage - 200) * 15)/100; | |
672 | } else if (req->reply[0] & 0x02) { | |
673 | vb = (vb * 97) / 100; | |
674 | vmax = vmax_charging; | |
675 | } | |
676 | charge = (100 * vb) / vmax; | |
677 | if (req->reply[0] & 0x40) { | |
678 | pcharge = (req->reply[6] << 8) + req->reply[7]; | |
679 | if (pcharge > lmax) | |
680 | pcharge = lmax; | |
681 | pcharge *= 100; | |
682 | pcharge = 100 - pcharge / lmax; | |
683 | if (pcharge < charge) | |
684 | charge = pcharge; | |
685 | } | |
686 | if (amperage > 0) | |
687 | time = (charge * 16440) / amperage; | |
688 | else | |
689 | time = 0; | |
690 | max = 100; | |
691 | amperage = -amperage; | |
692 | } else | |
693 | charge = max = amperage = voltage = time = 0; | |
694 | ||
695 | pmu_batteries[pmu_cur_battery].flags = bat_flags; | |
696 | pmu_batteries[pmu_cur_battery].charge = charge; | |
697 | pmu_batteries[pmu_cur_battery].max_charge = max; | |
698 | pmu_batteries[pmu_cur_battery].amperage = amperage; | |
699 | pmu_batteries[pmu_cur_battery].voltage = voltage; | |
700 | pmu_batteries[pmu_cur_battery].time_remaining = time; | |
701 | ||
702 | clear_bit(0, &async_req_locks); | |
703 | } | |
704 | ||
aacaf9bd | 705 | static void |
1da177e4 LT |
706 | done_battery_state_smart(struct adb_request* req) |
707 | { | |
708 | /* format: | |
709 | * [0] : format of this structure (known: 3,4,5) | |
710 | * [1] : flags | |
711 | * | |
712 | * format 3 & 4: | |
713 | * | |
714 | * [2] : charge | |
715 | * [3] : max charge | |
716 | * [4] : current | |
717 | * [5] : voltage | |
718 | * | |
719 | * format 5: | |
720 | * | |
721 | * [2][3] : charge | |
722 | * [4][5] : max charge | |
723 | * [6][7] : current | |
724 | * [8][9] : voltage | |
725 | */ | |
726 | ||
727 | unsigned int bat_flags = PMU_BATT_TYPE_SMART; | |
728 | int amperage; | |
729 | unsigned int capa, max, voltage; | |
730 | ||
731 | if (req->reply[1] & 0x01) | |
732 | pmu_power_flags |= PMU_PWR_AC_PRESENT; | |
733 | else | |
734 | pmu_power_flags &= ~PMU_PWR_AC_PRESENT; | |
735 | ||
736 | ||
737 | capa = max = amperage = voltage = 0; | |
738 | ||
739 | if (req->reply[1] & 0x04) { | |
740 | bat_flags |= PMU_BATT_PRESENT; | |
741 | switch(req->reply[0]) { | |
742 | case 3: | |
743 | case 4: capa = req->reply[2]; | |
744 | max = req->reply[3]; | |
745 | amperage = *((signed char *)&req->reply[4]); | |
746 | voltage = req->reply[5]; | |
747 | break; | |
748 | case 5: capa = (req->reply[2] << 8) | req->reply[3]; | |
749 | max = (req->reply[4] << 8) | req->reply[5]; | |
750 | amperage = *((signed short *)&req->reply[6]); | |
751 | voltage = (req->reply[8] << 8) | req->reply[9]; | |
752 | break; | |
753 | default: | |
754 | printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n", | |
755 | req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]); | |
756 | break; | |
757 | } | |
758 | } | |
759 | ||
760 | if ((req->reply[1] & 0x01) && (amperage > 0)) | |
761 | bat_flags |= PMU_BATT_CHARGING; | |
762 | ||
763 | pmu_batteries[pmu_cur_battery].flags = bat_flags; | |
764 | pmu_batteries[pmu_cur_battery].charge = capa; | |
765 | pmu_batteries[pmu_cur_battery].max_charge = max; | |
766 | pmu_batteries[pmu_cur_battery].amperage = amperage; | |
767 | pmu_batteries[pmu_cur_battery].voltage = voltage; | |
768 | if (amperage) { | |
769 | if ((req->reply[1] & 0x01) && (amperage > 0)) | |
770 | pmu_batteries[pmu_cur_battery].time_remaining | |
771 | = ((max-capa) * 3600) / amperage; | |
772 | else | |
773 | pmu_batteries[pmu_cur_battery].time_remaining | |
774 | = (capa * 3600) / (-amperage); | |
775 | } else | |
776 | pmu_batteries[pmu_cur_battery].time_remaining = 0; | |
777 | ||
778 | pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count; | |
779 | ||
780 | clear_bit(0, &async_req_locks); | |
781 | } | |
782 | ||
aacaf9bd | 783 | static void |
1da177e4 LT |
784 | query_battery_state(void) |
785 | { | |
786 | if (test_and_set_bit(0, &async_req_locks)) | |
787 | return; | |
788 | if (pmu_kind == PMU_OHARE_BASED) | |
789 | pmu_request(&batt_req, done_battery_state_ohare, | |
790 | 1, PMU_BATTERY_STATE); | |
791 | else | |
792 | pmu_request(&batt_req, done_battery_state_smart, | |
793 | 2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1); | |
794 | } | |
795 | ||
aacaf9bd | 796 | static int |
1da177e4 LT |
797 | proc_get_info(char *page, char **start, off_t off, |
798 | int count, int *eof, void *data) | |
799 | { | |
800 | char* p = page; | |
801 | ||
802 | p += sprintf(p, "PMU driver version : %d\n", PMU_DRIVER_VERSION); | |
803 | p += sprintf(p, "PMU firmware version : %02x\n", pmu_version); | |
1da177e4 | 804 | p += sprintf(p, "AC Power : %d\n", |
63e1fd41 | 805 | ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0); |
1da177e4 | 806 | p += sprintf(p, "Battery count : %d\n", pmu_battery_count); |
1da177e4 LT |
807 | |
808 | return p - page; | |
809 | } | |
810 | ||
aacaf9bd | 811 | static int |
1da177e4 LT |
812 | proc_get_irqstats(char *page, char **start, off_t off, |
813 | int count, int *eof, void *data) | |
814 | { | |
815 | int i; | |
816 | char* p = page; | |
817 | static const char *irq_names[] = { | |
818 | "Total CB1 triggered events", | |
819 | "Total GPIO1 triggered events", | |
820 | "PC-Card eject button", | |
821 | "Sound/Brightness button", | |
822 | "ADB message", | |
823 | "Battery state change", | |
824 | "Environment interrupt", | |
825 | "Tick timer", | |
826 | "Ghost interrupt (zero len)", | |
827 | "Empty interrupt (empty mask)", | |
828 | "Max irqs in a row" | |
829 | }; | |
830 | ||
831 | for (i=0; i<11; i++) { | |
832 | p += sprintf(p, " %2u: %10u (%s)\n", | |
833 | i, pmu_irq_stats[i], irq_names[i]); | |
834 | } | |
835 | return p - page; | |
836 | } | |
837 | ||
aacaf9bd | 838 | static int |
1da177e4 LT |
839 | proc_get_batt(char *page, char **start, off_t off, |
840 | int count, int *eof, void *data) | |
841 | { | |
8c870933 | 842 | long batnum = (long)data; |
1da177e4 LT |
843 | char *p = page; |
844 | ||
845 | p += sprintf(p, "\n"); | |
846 | p += sprintf(p, "flags : %08x\n", | |
847 | pmu_batteries[batnum].flags); | |
848 | p += sprintf(p, "charge : %d\n", | |
849 | pmu_batteries[batnum].charge); | |
850 | p += sprintf(p, "max_charge : %d\n", | |
851 | pmu_batteries[batnum].max_charge); | |
852 | p += sprintf(p, "current : %d\n", | |
853 | pmu_batteries[batnum].amperage); | |
854 | p += sprintf(p, "voltage : %d\n", | |
855 | pmu_batteries[batnum].voltage); | |
856 | p += sprintf(p, "time rem. : %d\n", | |
857 | pmu_batteries[batnum].time_remaining); | |
858 | ||
859 | return p - page; | |
860 | } | |
1da177e4 | 861 | |
aacaf9bd | 862 | static int |
1da177e4 LT |
863 | proc_read_options(char *page, char **start, off_t off, |
864 | int count, int *eof, void *data) | |
865 | { | |
866 | char *p = page; | |
867 | ||
a0005034 | 868 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 LT |
869 | if (pmu_kind == PMU_KEYLARGO_BASED && |
870 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0) | |
871 | p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup); | |
8c870933 | 872 | #endif |
1da177e4 LT |
873 | if (pmu_kind == PMU_KEYLARGO_BASED) |
874 | p += sprintf(p, "server_mode=%d\n", option_server_mode); | |
875 | ||
876 | return p - page; | |
877 | } | |
878 | ||
aacaf9bd | 879 | static int |
1da177e4 LT |
880 | proc_write_options(struct file *file, const char __user *buffer, |
881 | unsigned long count, void *data) | |
882 | { | |
883 | char tmp[33]; | |
884 | char *label, *val; | |
885 | unsigned long fcount = count; | |
886 | ||
887 | if (!count) | |
888 | return -EINVAL; | |
889 | if (count > 32) | |
890 | count = 32; | |
891 | if (copy_from_user(tmp, buffer, count)) | |
892 | return -EFAULT; | |
893 | tmp[count] = 0; | |
894 | ||
895 | label = tmp; | |
896 | while(*label == ' ') | |
897 | label++; | |
898 | val = label; | |
899 | while(*val && (*val != '=')) { | |
900 | if (*val == ' ') | |
901 | *val = 0; | |
902 | val++; | |
903 | } | |
904 | if ((*val) == 0) | |
905 | return -EINVAL; | |
906 | *(val++) = 0; | |
907 | while(*val == ' ') | |
908 | val++; | |
a0005034 | 909 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 LT |
910 | if (pmu_kind == PMU_KEYLARGO_BASED && |
911 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0) | |
912 | if (!strcmp(label, "lid_wakeup")) | |
913 | option_lid_wakeup = ((*val) == '1'); | |
8c870933 | 914 | #endif |
1da177e4 LT |
915 | if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) { |
916 | int new_value; | |
917 | new_value = ((*val) == '1'); | |
918 | if (new_value != option_server_mode) | |
919 | pmu_set_server_mode(new_value); | |
920 | } | |
921 | return fcount; | |
922 | } | |
923 | ||
924 | #ifdef CONFIG_ADB | |
925 | /* Send an ADB command */ | |
aacaf9bd | 926 | static int |
1da177e4 LT |
927 | pmu_send_request(struct adb_request *req, int sync) |
928 | { | |
929 | int i, ret; | |
930 | ||
931 | if ((vias == NULL) || (!pmu_fully_inited)) { | |
932 | req->complete = 1; | |
933 | return -ENXIO; | |
934 | } | |
935 | ||
936 | ret = -EINVAL; | |
937 | ||
938 | switch (req->data[0]) { | |
939 | case PMU_PACKET: | |
940 | for (i = 0; i < req->nbytes - 1; ++i) | |
941 | req->data[i] = req->data[i+1]; | |
942 | --req->nbytes; | |
943 | if (pmu_data_len[req->data[0]][1] != 0) { | |
944 | req->reply[0] = ADB_RET_OK; | |
945 | req->reply_len = 1; | |
946 | } else | |
947 | req->reply_len = 0; | |
948 | ret = pmu_queue_request(req); | |
949 | break; | |
950 | case CUDA_PACKET: | |
951 | switch (req->data[1]) { | |
952 | case CUDA_GET_TIME: | |
953 | if (req->nbytes != 2) | |
954 | break; | |
955 | req->data[0] = PMU_READ_RTC; | |
956 | req->nbytes = 1; | |
957 | req->reply_len = 3; | |
958 | req->reply[0] = CUDA_PACKET; | |
959 | req->reply[1] = 0; | |
960 | req->reply[2] = CUDA_GET_TIME; | |
961 | ret = pmu_queue_request(req); | |
962 | break; | |
963 | case CUDA_SET_TIME: | |
964 | if (req->nbytes != 6) | |
965 | break; | |
966 | req->data[0] = PMU_SET_RTC; | |
967 | req->nbytes = 5; | |
968 | for (i = 1; i <= 4; ++i) | |
969 | req->data[i] = req->data[i+1]; | |
970 | req->reply_len = 3; | |
971 | req->reply[0] = CUDA_PACKET; | |
972 | req->reply[1] = 0; | |
973 | req->reply[2] = CUDA_SET_TIME; | |
974 | ret = pmu_queue_request(req); | |
975 | break; | |
976 | } | |
977 | break; | |
978 | case ADB_PACKET: | |
979 | if (!pmu_has_adb) | |
980 | return -ENXIO; | |
981 | for (i = req->nbytes - 1; i > 1; --i) | |
982 | req->data[i+2] = req->data[i]; | |
983 | req->data[3] = req->nbytes - 2; | |
984 | req->data[2] = pmu_adb_flags; | |
985 | /*req->data[1] = req->data[1];*/ | |
986 | req->data[0] = PMU_ADB_CMD; | |
987 | req->nbytes += 2; | |
988 | req->reply_expected = 1; | |
989 | req->reply_len = 0; | |
990 | ret = pmu_queue_request(req); | |
991 | break; | |
992 | } | |
993 | if (ret) { | |
994 | req->complete = 1; | |
995 | return ret; | |
996 | } | |
997 | ||
998 | if (sync) | |
999 | while (!req->complete) | |
1000 | pmu_poll(); | |
1001 | ||
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | /* Enable/disable autopolling */ | |
aacaf9bd | 1006 | static int |
1da177e4 LT |
1007 | pmu_adb_autopoll(int devs) |
1008 | { | |
1009 | struct adb_request req; | |
1010 | ||
1011 | if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb) | |
1012 | return -ENXIO; | |
1013 | ||
1014 | if (devs) { | |
1015 | adb_dev_map = devs; | |
1016 | pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86, | |
1017 | adb_dev_map >> 8, adb_dev_map); | |
1018 | pmu_adb_flags = 2; | |
1019 | } else { | |
1020 | pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF); | |
1021 | pmu_adb_flags = 0; | |
1022 | } | |
1023 | while (!req.complete) | |
1024 | pmu_poll(); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | /* Reset the ADB bus */ | |
aacaf9bd | 1029 | static int |
1da177e4 LT |
1030 | pmu_adb_reset_bus(void) |
1031 | { | |
1032 | struct adb_request req; | |
1033 | int save_autopoll = adb_dev_map; | |
1034 | ||
1035 | if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb) | |
1036 | return -ENXIO; | |
1037 | ||
1038 | /* anyone got a better idea?? */ | |
1039 | pmu_adb_autopoll(0); | |
1040 | ||
1041 | req.nbytes = 5; | |
1042 | req.done = NULL; | |
1043 | req.data[0] = PMU_ADB_CMD; | |
1044 | req.data[1] = 0; | |
1045 | req.data[2] = ADB_BUSRESET; | |
1046 | req.data[3] = 0; | |
1047 | req.data[4] = 0; | |
1048 | req.reply_len = 0; | |
1049 | req.reply_expected = 1; | |
1050 | if (pmu_queue_request(&req) != 0) { | |
1051 | printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n"); | |
1052 | return -EIO; | |
1053 | } | |
1054 | pmu_wait_complete(&req); | |
1055 | ||
1056 | if (save_autopoll != 0) | |
1057 | pmu_adb_autopoll(save_autopoll); | |
1058 | ||
1059 | return 0; | |
1060 | } | |
1061 | #endif /* CONFIG_ADB */ | |
1062 | ||
1063 | /* Construct and send a pmu request */ | |
aacaf9bd | 1064 | int |
1da177e4 LT |
1065 | pmu_request(struct adb_request *req, void (*done)(struct adb_request *), |
1066 | int nbytes, ...) | |
1067 | { | |
1068 | va_list list; | |
1069 | int i; | |
1070 | ||
1071 | if (vias == NULL) | |
1072 | return -ENXIO; | |
1073 | ||
1074 | if (nbytes < 0 || nbytes > 32) { | |
1075 | printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes); | |
1076 | req->complete = 1; | |
1077 | return -EINVAL; | |
1078 | } | |
1079 | req->nbytes = nbytes; | |
1080 | req->done = done; | |
1081 | va_start(list, nbytes); | |
1082 | for (i = 0; i < nbytes; ++i) | |
1083 | req->data[i] = va_arg(list, int); | |
1084 | va_end(list); | |
1085 | req->reply_len = 0; | |
1086 | req->reply_expected = 0; | |
1087 | return pmu_queue_request(req); | |
1088 | } | |
1089 | ||
aacaf9bd | 1090 | int |
1da177e4 LT |
1091 | pmu_queue_request(struct adb_request *req) |
1092 | { | |
1093 | unsigned long flags; | |
1094 | int nsend; | |
1095 | ||
1096 | if (via == NULL) { | |
1097 | req->complete = 1; | |
1098 | return -ENXIO; | |
1099 | } | |
1100 | if (req->nbytes <= 0) { | |
1101 | req->complete = 1; | |
1102 | return 0; | |
1103 | } | |
1104 | nsend = pmu_data_len[req->data[0]][0]; | |
1105 | if (nsend >= 0 && req->nbytes != nsend + 1) { | |
1106 | req->complete = 1; | |
1107 | return -EINVAL; | |
1108 | } | |
1109 | ||
1110 | req->next = NULL; | |
1111 | req->sent = 0; | |
1112 | req->complete = 0; | |
1113 | ||
1114 | spin_lock_irqsave(&pmu_lock, flags); | |
1115 | if (current_req != 0) { | |
1116 | last_req->next = req; | |
1117 | last_req = req; | |
1118 | } else { | |
1119 | current_req = req; | |
1120 | last_req = req; | |
1121 | if (pmu_state == idle) | |
1122 | pmu_start(); | |
1123 | } | |
1124 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1125 | ||
1126 | return 0; | |
1127 | } | |
1128 | ||
1129 | static inline void | |
1130 | wait_for_ack(void) | |
1131 | { | |
1132 | /* Sightly increased the delay, I had one occurrence of the message | |
1133 | * reported | |
1134 | */ | |
1135 | int timeout = 4000; | |
1136 | while ((in_8(&via[B]) & TACK) == 0) { | |
1137 | if (--timeout < 0) { | |
1138 | printk(KERN_ERR "PMU not responding (!ack)\n"); | |
1139 | return; | |
1140 | } | |
1141 | udelay(10); | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | /* New PMU seems to be very sensitive to those timings, so we make sure | |
1146 | * PCI is flushed immediately */ | |
1147 | static inline void | |
1148 | send_byte(int x) | |
1149 | { | |
1150 | volatile unsigned char __iomem *v = via; | |
1151 | ||
1152 | out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT); | |
1153 | out_8(&v[SR], x); | |
1154 | out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */ | |
1155 | (void)in_8(&v[B]); | |
1156 | } | |
1157 | ||
1158 | static inline void | |
1159 | recv_byte(void) | |
1160 | { | |
1161 | volatile unsigned char __iomem *v = via; | |
1162 | ||
1163 | out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT); | |
1164 | in_8(&v[SR]); /* resets SR */ | |
1165 | out_8(&v[B], in_8(&v[B]) & ~TREQ); | |
1166 | (void)in_8(&v[B]); | |
1167 | } | |
1168 | ||
1169 | static inline void | |
1170 | pmu_done(struct adb_request *req) | |
1171 | { | |
1172 | void (*done)(struct adb_request *) = req->done; | |
1173 | mb(); | |
1174 | req->complete = 1; | |
1175 | /* Here, we assume that if the request has a done member, the | |
1176 | * struct request will survive to setting req->complete to 1 | |
1177 | */ | |
1178 | if (done) | |
1179 | (*done)(req); | |
1180 | } | |
1181 | ||
aacaf9bd | 1182 | static void |
1da177e4 LT |
1183 | pmu_start(void) |
1184 | { | |
1185 | struct adb_request *req; | |
1186 | ||
1187 | /* assert pmu_state == idle */ | |
1188 | /* get the packet to send */ | |
1189 | req = current_req; | |
1190 | if (req == 0 || pmu_state != idle | |
1191 | || (/*req->reply_expected && */req_awaiting_reply)) | |
1192 | return; | |
1193 | ||
1194 | pmu_state = sending; | |
1195 | data_index = 1; | |
1196 | data_len = pmu_data_len[req->data[0]][0]; | |
1197 | ||
1198 | /* Sounds safer to make sure ACK is high before writing. This helped | |
1199 | * kill a problem with ADB and some iBooks | |
1200 | */ | |
1201 | wait_for_ack(); | |
1202 | /* set the shift register to shift out and send a byte */ | |
1203 | send_byte(req->data[0]); | |
1204 | } | |
1205 | ||
aacaf9bd | 1206 | void |
1da177e4 LT |
1207 | pmu_poll(void) |
1208 | { | |
1209 | if (!via) | |
1210 | return; | |
1211 | if (disable_poll) | |
1212 | return; | |
1213 | via_pmu_interrupt(0, NULL, NULL); | |
1214 | } | |
1215 | ||
aacaf9bd | 1216 | void |
1da177e4 LT |
1217 | pmu_poll_adb(void) |
1218 | { | |
1219 | if (!via) | |
1220 | return; | |
1221 | if (disable_poll) | |
1222 | return; | |
1223 | /* Kicks ADB read when PMU is suspended */ | |
1224 | adb_int_pending = 1; | |
1225 | do { | |
1226 | via_pmu_interrupt(0, NULL, NULL); | |
1227 | } while (pmu_suspended && (adb_int_pending || pmu_state != idle | |
1228 | || req_awaiting_reply)); | |
1229 | } | |
1230 | ||
aacaf9bd | 1231 | void |
1da177e4 LT |
1232 | pmu_wait_complete(struct adb_request *req) |
1233 | { | |
1234 | if (!via) | |
1235 | return; | |
1236 | while((pmu_state != idle && pmu_state != locked) || !req->complete) | |
1237 | via_pmu_interrupt(0, NULL, NULL); | |
1238 | } | |
1239 | ||
1240 | /* This function loops until the PMU is idle and prevents it from | |
1241 | * anwsering to ADB interrupts. pmu_request can still be called. | |
1242 | * This is done to avoid spurrious shutdowns when we know we'll have | |
1243 | * interrupts switched off for a long time | |
1244 | */ | |
aacaf9bd | 1245 | void |
1da177e4 LT |
1246 | pmu_suspend(void) |
1247 | { | |
1248 | unsigned long flags; | |
1249 | #ifdef SUSPEND_USES_PMU | |
1250 | struct adb_request *req; | |
1251 | #endif | |
1252 | if (!via) | |
1253 | return; | |
1254 | ||
1255 | spin_lock_irqsave(&pmu_lock, flags); | |
1256 | pmu_suspended++; | |
1257 | if (pmu_suspended > 1) { | |
1258 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1259 | return; | |
1260 | } | |
1261 | ||
1262 | do { | |
1263 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1264 | if (req_awaiting_reply) | |
1265 | adb_int_pending = 1; | |
1266 | via_pmu_interrupt(0, NULL, NULL); | |
1267 | spin_lock_irqsave(&pmu_lock, flags); | |
1268 | if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) { | |
1269 | #ifdef SUSPEND_USES_PMU | |
1270 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0); | |
1271 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1272 | while(!req.complete) | |
1273 | pmu_poll(); | |
1274 | #else /* SUSPEND_USES_PMU */ | |
1275 | if (gpio_irq >= 0) | |
1276 | disable_irq_nosync(gpio_irq); | |
1277 | out_8(&via[IER], CB1_INT | IER_CLR); | |
1278 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1279 | #endif /* SUSPEND_USES_PMU */ | |
1280 | break; | |
1281 | } | |
1282 | } while (1); | |
1283 | } | |
1284 | ||
aacaf9bd | 1285 | void |
1da177e4 LT |
1286 | pmu_resume(void) |
1287 | { | |
1288 | unsigned long flags; | |
1289 | ||
1290 | if (!via || (pmu_suspended < 1)) | |
1291 | return; | |
1292 | ||
1293 | spin_lock_irqsave(&pmu_lock, flags); | |
1294 | pmu_suspended--; | |
1295 | if (pmu_suspended > 0) { | |
1296 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1297 | return; | |
1298 | } | |
1299 | adb_int_pending = 1; | |
1300 | #ifdef SUSPEND_USES_PMU | |
1301 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); | |
1302 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1303 | while(!req.complete) | |
1304 | pmu_poll(); | |
1305 | #else /* SUSPEND_USES_PMU */ | |
1306 | if (gpio_irq >= 0) | |
1307 | enable_irq(gpio_irq); | |
1308 | out_8(&via[IER], CB1_INT | IER_SET); | |
1309 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1310 | pmu_poll(); | |
1311 | #endif /* SUSPEND_USES_PMU */ | |
1312 | } | |
1313 | ||
1314 | /* Interrupt data could be the result data from an ADB cmd */ | |
aacaf9bd | 1315 | static void |
1da177e4 LT |
1316 | pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs) |
1317 | { | |
1318 | unsigned char ints, pirq; | |
1319 | int i = 0; | |
1320 | ||
1321 | asleep = 0; | |
1322 | if (drop_interrupts || len < 1) { | |
1323 | adb_int_pending = 0; | |
1324 | pmu_irq_stats[8]++; | |
1325 | return; | |
1326 | } | |
1327 | ||
1328 | /* Get PMU interrupt mask */ | |
1329 | ints = data[0]; | |
1330 | ||
1331 | /* Record zero interrupts for stats */ | |
1332 | if (ints == 0) | |
1333 | pmu_irq_stats[9]++; | |
1334 | ||
1335 | /* Hack to deal with ADB autopoll flag */ | |
1336 | if (ints & PMU_INT_ADB) | |
1337 | ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL); | |
1338 | ||
1339 | next: | |
1340 | ||
1341 | if (ints == 0) { | |
1342 | if (i > pmu_irq_stats[10]) | |
1343 | pmu_irq_stats[10] = i; | |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | for (pirq = 0; pirq < 8; pirq++) | |
1348 | if (ints & (1 << pirq)) | |
1349 | break; | |
1350 | pmu_irq_stats[pirq]++; | |
1351 | i++; | |
1352 | ints &= ~(1 << pirq); | |
1353 | ||
1354 | /* Note: for some reason, we get an interrupt with len=1, | |
1355 | * data[0]==0 after each normal ADB interrupt, at least | |
1356 | * on the Pismo. Still investigating... --BenH | |
1357 | */ | |
1358 | if ((1 << pirq) & PMU_INT_ADB) { | |
1359 | if ((data[0] & PMU_INT_ADB_AUTO) == 0) { | |
1360 | struct adb_request *req = req_awaiting_reply; | |
1361 | if (req == 0) { | |
1362 | printk(KERN_ERR "PMU: extra ADB reply\n"); | |
1363 | return; | |
1364 | } | |
1365 | req_awaiting_reply = NULL; | |
1366 | if (len <= 2) | |
1367 | req->reply_len = 0; | |
1368 | else { | |
1369 | memcpy(req->reply, data + 1, len - 1); | |
1370 | req->reply_len = len - 1; | |
1371 | } | |
1372 | pmu_done(req); | |
1373 | } else { | |
1da177e4 LT |
1374 | if (len == 4 && data[1] == 0x2c) { |
1375 | extern int xmon_wants_key, xmon_adb_keycode; | |
1376 | if (xmon_wants_key) { | |
1377 | xmon_adb_keycode = data[2]; | |
1378 | return; | |
1379 | } | |
1380 | } | |
1da177e4 LT |
1381 | #ifdef CONFIG_ADB |
1382 | /* | |
1383 | * XXX On the [23]400 the PMU gives us an up | |
1384 | * event for keycodes 0x74 or 0x75 when the PC | |
1385 | * card eject buttons are released, so we | |
1386 | * ignore those events. | |
1387 | */ | |
1388 | if (!(pmu_kind == PMU_OHARE_BASED && len == 4 | |
1389 | && data[1] == 0x2c && data[3] == 0xff | |
1390 | && (data[2] & ~1) == 0xf4)) | |
1391 | adb_input(data+1, len-1, regs, 1); | |
1392 | #endif /* CONFIG_ADB */ | |
1393 | } | |
1394 | } | |
1395 | /* Sound/brightness button pressed */ | |
1396 | else if ((1 << pirq) & PMU_INT_SNDBRT) { | |
1397 | #ifdef CONFIG_PMAC_BACKLIGHT | |
1398 | if (len == 3) | |
4b755999 MH |
1399 | pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4); |
1400 | #endif | |
1da177e4 LT |
1401 | } |
1402 | /* Tick interrupt */ | |
1403 | else if ((1 << pirq) & PMU_INT_TICK) { | |
1da177e4 LT |
1404 | /* Environement or tick interrupt, query batteries */ |
1405 | if (pmu_battery_count) { | |
1406 | if ((--query_batt_timer) == 0) { | |
1407 | query_battery_state(); | |
1408 | query_batt_timer = BATTERY_POLLING_COUNT; | |
1409 | } | |
1410 | } | |
1411 | } | |
1412 | else if ((1 << pirq) & PMU_INT_ENVIRONMENT) { | |
1413 | if (pmu_battery_count) | |
1414 | query_battery_state(); | |
1415 | pmu_pass_intr(data, len); | |
9e8e30a0 JB |
1416 | /* len == 6 is probably a bad check. But how do I |
1417 | * know what PMU versions send what events here? */ | |
1418 | if (len == 6) { | |
1419 | via_pmu_event(PMU_EVT_POWER, !!(data[1]&8)); | |
1420 | via_pmu_event(PMU_EVT_LID, data[1]&1); | |
1421 | } | |
1da177e4 LT |
1422 | } else { |
1423 | pmu_pass_intr(data, len); | |
1da177e4 LT |
1424 | } |
1425 | goto next; | |
1426 | } | |
1427 | ||
aacaf9bd | 1428 | static struct adb_request* |
1da177e4 LT |
1429 | pmu_sr_intr(struct pt_regs *regs) |
1430 | { | |
1431 | struct adb_request *req; | |
1432 | int bite = 0; | |
1433 | ||
1434 | if (via[B] & TREQ) { | |
1435 | printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]); | |
1436 | out_8(&via[IFR], SR_INT); | |
1437 | return NULL; | |
1438 | } | |
1439 | /* The ack may not yet be low when we get the interrupt */ | |
1440 | while ((in_8(&via[B]) & TACK) != 0) | |
1441 | ; | |
1442 | ||
1443 | /* if reading grab the byte, and reset the interrupt */ | |
1444 | if (pmu_state == reading || pmu_state == reading_intr) | |
1445 | bite = in_8(&via[SR]); | |
1446 | ||
1447 | /* reset TREQ and wait for TACK to go high */ | |
1448 | out_8(&via[B], in_8(&via[B]) | TREQ); | |
1449 | wait_for_ack(); | |
1450 | ||
1451 | switch (pmu_state) { | |
1452 | case sending: | |
1453 | req = current_req; | |
1454 | if (data_len < 0) { | |
1455 | data_len = req->nbytes - 1; | |
1456 | send_byte(data_len); | |
1457 | break; | |
1458 | } | |
1459 | if (data_index <= data_len) { | |
1460 | send_byte(req->data[data_index++]); | |
1461 | break; | |
1462 | } | |
1463 | req->sent = 1; | |
1464 | data_len = pmu_data_len[req->data[0]][1]; | |
1465 | if (data_len == 0) { | |
1466 | pmu_state = idle; | |
1467 | current_req = req->next; | |
1468 | if (req->reply_expected) | |
1469 | req_awaiting_reply = req; | |
1470 | else | |
1471 | return req; | |
1472 | } else { | |
1473 | pmu_state = reading; | |
1474 | data_index = 0; | |
1475 | reply_ptr = req->reply + req->reply_len; | |
1476 | recv_byte(); | |
1477 | } | |
1478 | break; | |
1479 | ||
1480 | case intack: | |
1481 | data_index = 0; | |
1482 | data_len = -1; | |
1483 | pmu_state = reading_intr; | |
1484 | reply_ptr = interrupt_data[int_data_last]; | |
1485 | recv_byte(); | |
1486 | if (gpio_irq >= 0 && !gpio_irq_enabled) { | |
1487 | enable_irq(gpio_irq); | |
1488 | gpio_irq_enabled = 1; | |
1489 | } | |
1490 | break; | |
1491 | ||
1492 | case reading: | |
1493 | case reading_intr: | |
1494 | if (data_len == -1) { | |
1495 | data_len = bite; | |
1496 | if (bite > 32) | |
1497 | printk(KERN_ERR "PMU: bad reply len %d\n", bite); | |
1498 | } else if (data_index < 32) { | |
1499 | reply_ptr[data_index++] = bite; | |
1500 | } | |
1501 | if (data_index < data_len) { | |
1502 | recv_byte(); | |
1503 | break; | |
1504 | } | |
1505 | ||
1506 | if (pmu_state == reading_intr) { | |
1507 | pmu_state = idle; | |
1508 | int_data_state[int_data_last] = int_data_ready; | |
1509 | interrupt_data_len[int_data_last] = data_len; | |
1510 | } else { | |
1511 | req = current_req; | |
1512 | /* | |
1513 | * For PMU sleep and freq change requests, we lock the | |
1514 | * PMU until it's explicitely unlocked. This avoids any | |
1515 | * spurrious event polling getting in | |
1516 | */ | |
1517 | current_req = req->next; | |
1518 | req->reply_len += data_index; | |
1519 | if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED) | |
1520 | pmu_state = locked; | |
1521 | else | |
1522 | pmu_state = idle; | |
1523 | return req; | |
1524 | } | |
1525 | break; | |
1526 | ||
1527 | default: | |
1528 | printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n", | |
1529 | pmu_state); | |
1530 | } | |
1531 | return NULL; | |
1532 | } | |
1533 | ||
aacaf9bd | 1534 | static irqreturn_t |
1da177e4 LT |
1535 | via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs) |
1536 | { | |
1537 | unsigned long flags; | |
1538 | int intr; | |
1539 | int nloop = 0; | |
1540 | int int_data = -1; | |
1541 | struct adb_request *req = NULL; | |
1542 | int handled = 0; | |
1543 | ||
1544 | /* This is a bit brutal, we can probably do better */ | |
1545 | spin_lock_irqsave(&pmu_lock, flags); | |
1546 | ++disable_poll; | |
1547 | ||
1548 | for (;;) { | |
1549 | intr = in_8(&via[IFR]) & (SR_INT | CB1_INT); | |
1550 | if (intr == 0) | |
1551 | break; | |
1552 | handled = 1; | |
1553 | if (++nloop > 1000) { | |
1554 | printk(KERN_DEBUG "PMU: stuck in intr loop, " | |
1555 | "intr=%x, ier=%x pmu_state=%d\n", | |
1556 | intr, in_8(&via[IER]), pmu_state); | |
1557 | break; | |
1558 | } | |
1559 | out_8(&via[IFR], intr); | |
1560 | if (intr & CB1_INT) { | |
1561 | adb_int_pending = 1; | |
1562 | pmu_irq_stats[0]++; | |
1563 | } | |
1564 | if (intr & SR_INT) { | |
1565 | req = pmu_sr_intr(regs); | |
1566 | if (req) | |
1567 | break; | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | recheck: | |
1572 | if (pmu_state == idle) { | |
1573 | if (adb_int_pending) { | |
1574 | if (int_data_state[0] == int_data_empty) | |
1575 | int_data_last = 0; | |
1576 | else if (int_data_state[1] == int_data_empty) | |
1577 | int_data_last = 1; | |
1578 | else | |
1579 | goto no_free_slot; | |
1580 | pmu_state = intack; | |
1581 | int_data_state[int_data_last] = int_data_fill; | |
1582 | /* Sounds safer to make sure ACK is high before writing. | |
1583 | * This helped kill a problem with ADB and some iBooks | |
1584 | */ | |
1585 | wait_for_ack(); | |
1586 | send_byte(PMU_INT_ACK); | |
1587 | adb_int_pending = 0; | |
1588 | } else if (current_req) | |
1589 | pmu_start(); | |
1590 | } | |
1591 | no_free_slot: | |
1592 | /* Mark the oldest buffer for flushing */ | |
1593 | if (int_data_state[!int_data_last] == int_data_ready) { | |
1594 | int_data_state[!int_data_last] = int_data_flush; | |
1595 | int_data = !int_data_last; | |
1596 | } else if (int_data_state[int_data_last] == int_data_ready) { | |
1597 | int_data_state[int_data_last] = int_data_flush; | |
1598 | int_data = int_data_last; | |
1599 | } | |
1600 | --disable_poll; | |
1601 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1602 | ||
1603 | /* Deal with completed PMU requests outside of the lock */ | |
1604 | if (req) { | |
1605 | pmu_done(req); | |
1606 | req = NULL; | |
1607 | } | |
1608 | ||
1609 | /* Deal with interrupt datas outside of the lock */ | |
1610 | if (int_data >= 0) { | |
1611 | pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data], regs); | |
1612 | spin_lock_irqsave(&pmu_lock, flags); | |
1613 | ++disable_poll; | |
1614 | int_data_state[int_data] = int_data_empty; | |
1615 | int_data = -1; | |
1616 | goto recheck; | |
1617 | } | |
1618 | ||
1619 | return IRQ_RETVAL(handled); | |
1620 | } | |
1621 | ||
aacaf9bd | 1622 | void |
1da177e4 LT |
1623 | pmu_unlock(void) |
1624 | { | |
1625 | unsigned long flags; | |
1626 | ||
1627 | spin_lock_irqsave(&pmu_lock, flags); | |
1628 | if (pmu_state == locked) | |
1629 | pmu_state = idle; | |
1630 | adb_int_pending = 1; | |
1631 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1632 | } | |
1633 | ||
1634 | ||
aacaf9bd | 1635 | static irqreturn_t |
1da177e4 LT |
1636 | gpio1_interrupt(int irq, void *arg, struct pt_regs *regs) |
1637 | { | |
1638 | unsigned long flags; | |
1639 | ||
1640 | if ((in_8(gpio_reg + 0x9) & 0x02) == 0) { | |
1641 | spin_lock_irqsave(&pmu_lock, flags); | |
1642 | if (gpio_irq_enabled > 0) { | |
1643 | disable_irq_nosync(gpio_irq); | |
1644 | gpio_irq_enabled = 0; | |
1645 | } | |
1646 | pmu_irq_stats[1]++; | |
1647 | adb_int_pending = 1; | |
1648 | spin_unlock_irqrestore(&pmu_lock, flags); | |
1649 | via_pmu_interrupt(0, NULL, NULL); | |
1650 | return IRQ_HANDLED; | |
1651 | } | |
1652 | return IRQ_NONE; | |
1653 | } | |
1654 | ||
aacaf9bd | 1655 | void |
1da177e4 LT |
1656 | pmu_enable_irled(int on) |
1657 | { | |
1658 | struct adb_request req; | |
1659 | ||
1660 | if (vias == NULL) | |
1661 | return ; | |
1662 | if (pmu_kind == PMU_KEYLARGO_BASED) | |
1663 | return ; | |
1664 | ||
1665 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED | | |
1666 | (on ? PMU_POW_ON : PMU_POW_OFF)); | |
1667 | pmu_wait_complete(&req); | |
1668 | } | |
1669 | ||
aacaf9bd | 1670 | void |
1da177e4 LT |
1671 | pmu_restart(void) |
1672 | { | |
1673 | struct adb_request req; | |
1674 | ||
1675 | if (via == NULL) | |
1676 | return; | |
1677 | ||
1678 | local_irq_disable(); | |
1679 | ||
1680 | drop_interrupts = 1; | |
1681 | ||
1682 | if (pmu_kind != PMU_KEYLARGO_BASED) { | |
1683 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB | | |
1684 | PMU_INT_TICK ); | |
1685 | while(!req.complete) | |
1686 | pmu_poll(); | |
1687 | } | |
1688 | ||
1689 | pmu_request(&req, NULL, 1, PMU_RESET); | |
1690 | pmu_wait_complete(&req); | |
1691 | for (;;) | |
1692 | ; | |
1693 | } | |
1694 | ||
aacaf9bd | 1695 | void |
1da177e4 LT |
1696 | pmu_shutdown(void) |
1697 | { | |
1698 | struct adb_request req; | |
1699 | ||
1700 | if (via == NULL) | |
1701 | return; | |
1702 | ||
1703 | local_irq_disable(); | |
1704 | ||
1705 | drop_interrupts = 1; | |
1706 | ||
1707 | if (pmu_kind != PMU_KEYLARGO_BASED) { | |
1708 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB | | |
1709 | PMU_INT_TICK ); | |
1710 | pmu_wait_complete(&req); | |
1711 | } else { | |
1712 | /* Disable server mode on shutdown or we'll just | |
1713 | * wake up again | |
1714 | */ | |
1715 | pmu_set_server_mode(0); | |
1716 | } | |
1717 | ||
1718 | pmu_request(&req, NULL, 5, PMU_SHUTDOWN, | |
1719 | 'M', 'A', 'T', 'T'); | |
1720 | pmu_wait_complete(&req); | |
1721 | for (;;) | |
1722 | ; | |
1723 | } | |
1724 | ||
1725 | int | |
1726 | pmu_present(void) | |
1727 | { | |
1728 | return via != 0; | |
1729 | } | |
1730 | ||
8c870933 | 1731 | #ifdef CONFIG_PM |
1da177e4 LT |
1732 | |
1733 | static LIST_HEAD(sleep_notifiers); | |
1734 | ||
1735 | int | |
1736 | pmu_register_sleep_notifier(struct pmu_sleep_notifier *n) | |
1737 | { | |
1738 | struct list_head *list; | |
1739 | struct pmu_sleep_notifier *notifier; | |
1740 | ||
1741 | for (list = sleep_notifiers.next; list != &sleep_notifiers; | |
1742 | list = list->next) { | |
1743 | notifier = list_entry(list, struct pmu_sleep_notifier, list); | |
1744 | if (n->priority > notifier->priority) | |
1745 | break; | |
1746 | } | |
1747 | __list_add(&n->list, list->prev, list); | |
1748 | return 0; | |
1749 | } | |
3fb62b51 | 1750 | EXPORT_SYMBOL(pmu_register_sleep_notifier); |
1da177e4 LT |
1751 | |
1752 | int | |
1753 | pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n) | |
1754 | { | |
1755 | if (n->list.next == 0) | |
1756 | return -ENOENT; | |
1757 | list_del(&n->list); | |
1758 | n->list.next = NULL; | |
1759 | return 0; | |
1760 | } | |
3fb62b51 | 1761 | EXPORT_SYMBOL(pmu_unregister_sleep_notifier); |
a0005034 PM |
1762 | #endif /* CONFIG_PM */ |
1763 | ||
1764 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) | |
1da177e4 LT |
1765 | |
1766 | /* Sleep is broadcast last-to-first */ | |
aacaf9bd | 1767 | static int |
1da177e4 LT |
1768 | broadcast_sleep(int when, int fallback) |
1769 | { | |
1770 | int ret = PBOOK_SLEEP_OK; | |
1771 | struct list_head *list; | |
1772 | struct pmu_sleep_notifier *notifier; | |
1773 | ||
1774 | for (list = sleep_notifiers.prev; list != &sleep_notifiers; | |
1775 | list = list->prev) { | |
1776 | notifier = list_entry(list, struct pmu_sleep_notifier, list); | |
1777 | ret = notifier->notifier_call(notifier, when); | |
1778 | if (ret != PBOOK_SLEEP_OK) { | |
1779 | printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n", | |
1780 | when, notifier, notifier->notifier_call); | |
1781 | for (; list != &sleep_notifiers; list = list->next) { | |
1782 | notifier = list_entry(list, struct pmu_sleep_notifier, list); | |
1783 | notifier->notifier_call(notifier, fallback); | |
1784 | } | |
1785 | return ret; | |
1786 | } | |
1787 | } | |
1788 | return ret; | |
1789 | } | |
1790 | ||
1791 | /* Wake is broadcast first-to-last */ | |
aacaf9bd | 1792 | static int |
1da177e4 LT |
1793 | broadcast_wake(void) |
1794 | { | |
1795 | int ret = PBOOK_SLEEP_OK; | |
1796 | struct list_head *list; | |
1797 | struct pmu_sleep_notifier *notifier; | |
1798 | ||
1799 | for (list = sleep_notifiers.next; list != &sleep_notifiers; | |
1800 | list = list->next) { | |
1801 | notifier = list_entry(list, struct pmu_sleep_notifier, list); | |
1802 | notifier->notifier_call(notifier, PBOOK_WAKE); | |
1803 | } | |
1804 | return ret; | |
1805 | } | |
1806 | ||
1807 | /* | |
1808 | * This struct is used to store config register values for | |
1809 | * PCI devices which may get powered off when we sleep. | |
1810 | */ | |
1811 | static struct pci_save { | |
1812 | #ifndef HACKED_PCI_SAVE | |
1813 | u16 command; | |
1814 | u16 cache_lat; | |
1815 | u16 intr; | |
1816 | u32 rom_address; | |
1817 | #else | |
1818 | u32 config[16]; | |
1819 | #endif | |
1820 | } *pbook_pci_saves; | |
1821 | static int pbook_npci_saves; | |
1822 | ||
aacaf9bd | 1823 | static void |
1da177e4 LT |
1824 | pbook_alloc_pci_save(void) |
1825 | { | |
1826 | int npci; | |
1827 | struct pci_dev *pd = NULL; | |
1828 | ||
1829 | npci = 0; | |
1830 | while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) { | |
1831 | ++npci; | |
1832 | } | |
1833 | if (npci == 0) | |
1834 | return; | |
1835 | pbook_pci_saves = (struct pci_save *) | |
1836 | kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL); | |
1837 | pbook_npci_saves = npci; | |
1838 | } | |
1839 | ||
aacaf9bd | 1840 | static void |
1da177e4 LT |
1841 | pbook_free_pci_save(void) |
1842 | { | |
1843 | if (pbook_pci_saves == NULL) | |
1844 | return; | |
1845 | kfree(pbook_pci_saves); | |
1846 | pbook_pci_saves = NULL; | |
1847 | pbook_npci_saves = 0; | |
1848 | } | |
1849 | ||
aacaf9bd | 1850 | static void |
1da177e4 LT |
1851 | pbook_pci_save(void) |
1852 | { | |
1853 | struct pci_save *ps = pbook_pci_saves; | |
1854 | struct pci_dev *pd = NULL; | |
1855 | int npci = pbook_npci_saves; | |
1856 | ||
1857 | if (ps == NULL) | |
1858 | return; | |
1859 | ||
1860 | while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) { | |
1861 | if (npci-- == 0) | |
1862 | return; | |
1863 | #ifndef HACKED_PCI_SAVE | |
1864 | pci_read_config_word(pd, PCI_COMMAND, &ps->command); | |
1865 | pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat); | |
1866 | pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr); | |
1867 | pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address); | |
1868 | #else | |
1869 | int i; | |
1870 | for (i=1;i<16;i++) | |
1871 | pci_read_config_dword(pd, i<<4, &ps->config[i]); | |
1872 | #endif | |
1873 | ++ps; | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | /* For this to work, we must take care of a few things: If gmac was enabled | |
1878 | * during boot, it will be in the pci dev list. If it's disabled at this point | |
1879 | * (and it will probably be), then you can't access it's config space. | |
1880 | */ | |
aacaf9bd | 1881 | static void |
1da177e4 LT |
1882 | pbook_pci_restore(void) |
1883 | { | |
1884 | u16 cmd; | |
1885 | struct pci_save *ps = pbook_pci_saves - 1; | |
1886 | struct pci_dev *pd = NULL; | |
1887 | int npci = pbook_npci_saves; | |
1888 | int j; | |
1889 | ||
1890 | while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) { | |
1891 | #ifdef HACKED_PCI_SAVE | |
1892 | int i; | |
1893 | if (npci-- == 0) | |
1894 | return; | |
1895 | ps++; | |
1896 | for (i=2;i<16;i++) | |
1897 | pci_write_config_dword(pd, i<<4, ps->config[i]); | |
1898 | pci_write_config_dword(pd, 4, ps->config[1]); | |
1899 | #else | |
1900 | if (npci-- == 0) | |
1901 | return; | |
1902 | ps++; | |
1903 | if (ps->command == 0) | |
1904 | continue; | |
1905 | pci_read_config_word(pd, PCI_COMMAND, &cmd); | |
1906 | if ((ps->command & ~cmd) == 0) | |
1907 | continue; | |
1908 | switch (pd->hdr_type) { | |
1909 | case PCI_HEADER_TYPE_NORMAL: | |
1910 | for (j = 0; j < 6; ++j) | |
1911 | pci_write_config_dword(pd, | |
1912 | PCI_BASE_ADDRESS_0 + j*4, | |
1913 | pd->resource[j].start); | |
1914 | pci_write_config_dword(pd, PCI_ROM_ADDRESS, | |
1915 | ps->rom_address); | |
1916 | pci_write_config_word(pd, PCI_CACHE_LINE_SIZE, | |
1917 | ps->cache_lat); | |
1918 | pci_write_config_word(pd, PCI_INTERRUPT_LINE, | |
1919 | ps->intr); | |
1920 | pci_write_config_word(pd, PCI_COMMAND, ps->command); | |
1921 | break; | |
1922 | } | |
1923 | #endif | |
1924 | } | |
1925 | } | |
1926 | ||
1927 | #ifdef DEBUG_SLEEP | |
1928 | /* N.B. This doesn't work on the 3400 */ | |
aacaf9bd | 1929 | void |
1da177e4 LT |
1930 | pmu_blink(int n) |
1931 | { | |
1932 | struct adb_request req; | |
1933 | ||
1934 | memset(&req, 0, sizeof(req)); | |
1935 | ||
1936 | for (; n > 0; --n) { | |
1937 | req.nbytes = 4; | |
1938 | req.done = NULL; | |
1939 | req.data[0] = 0xee; | |
1940 | req.data[1] = 4; | |
1941 | req.data[2] = 0; | |
1942 | req.data[3] = 1; | |
1943 | req.reply[0] = ADB_RET_OK; | |
1944 | req.reply_len = 1; | |
1945 | req.reply_expected = 0; | |
1946 | pmu_polled_request(&req); | |
1947 | mdelay(50); | |
1948 | req.nbytes = 4; | |
1949 | req.done = NULL; | |
1950 | req.data[0] = 0xee; | |
1951 | req.data[1] = 4; | |
1952 | req.data[2] = 0; | |
1953 | req.data[3] = 0; | |
1954 | req.reply[0] = ADB_RET_OK; | |
1955 | req.reply_len = 1; | |
1956 | req.reply_expected = 0; | |
1957 | pmu_polled_request(&req); | |
1958 | mdelay(50); | |
1959 | } | |
1960 | mdelay(50); | |
1961 | } | |
1962 | #endif | |
1963 | ||
1964 | /* | |
1965 | * Put the powerbook to sleep. | |
1966 | */ | |
1967 | ||
aacaf9bd | 1968 | static u32 save_via[8]; |
1da177e4 | 1969 | |
aacaf9bd | 1970 | static void |
1da177e4 LT |
1971 | save_via_state(void) |
1972 | { | |
1973 | save_via[0] = in_8(&via[ANH]); | |
1974 | save_via[1] = in_8(&via[DIRA]); | |
1975 | save_via[2] = in_8(&via[B]); | |
1976 | save_via[3] = in_8(&via[DIRB]); | |
1977 | save_via[4] = in_8(&via[PCR]); | |
1978 | save_via[5] = in_8(&via[ACR]); | |
1979 | save_via[6] = in_8(&via[T1CL]); | |
1980 | save_via[7] = in_8(&via[T1CH]); | |
1981 | } | |
aacaf9bd | 1982 | static void |
1da177e4 LT |
1983 | restore_via_state(void) |
1984 | { | |
1985 | out_8(&via[ANH], save_via[0]); | |
1986 | out_8(&via[DIRA], save_via[1]); | |
1987 | out_8(&via[B], save_via[2]); | |
1988 | out_8(&via[DIRB], save_via[3]); | |
1989 | out_8(&via[PCR], save_via[4]); | |
1990 | out_8(&via[ACR], save_via[5]); | |
1991 | out_8(&via[T1CL], save_via[6]); | |
1992 | out_8(&via[T1CH], save_via[7]); | |
1993 | out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */ | |
1994 | out_8(&via[IFR], 0x7f); /* clear IFR */ | |
1995 | out_8(&via[IER], IER_SET | SR_INT | CB1_INT); | |
1996 | } | |
1997 | ||
d565dd3b BH |
1998 | extern void pmu_backlight_set_sleep(int sleep); |
1999 | ||
aacaf9bd | 2000 | static int |
1da177e4 LT |
2001 | pmac_suspend_devices(void) |
2002 | { | |
2003 | int ret; | |
2004 | ||
2005 | pm_prepare_console(); | |
2006 | ||
2007 | /* Notify old-style device drivers & userland */ | |
2008 | ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT); | |
2009 | if (ret != PBOOK_SLEEP_OK) { | |
2010 | printk(KERN_ERR "Sleep rejected by drivers\n"); | |
2011 | return -EBUSY; | |
2012 | } | |
2013 | ||
2014 | /* Sync the disks. */ | |
2015 | /* XXX It would be nice to have some way to ensure that | |
2016 | * nobody is dirtying any new buffers while we wait. That | |
2017 | * could be achieved using the refrigerator for processes | |
2018 | * that swsusp uses | |
2019 | */ | |
2020 | sys_sync(); | |
2021 | ||
2022 | /* Sleep can fail now. May not be very robust but useful for debugging */ | |
2023 | ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE); | |
2024 | if (ret != PBOOK_SLEEP_OK) { | |
2025 | printk(KERN_ERR "Driver sleep failed\n"); | |
2026 | return -EBUSY; | |
2027 | } | |
2028 | ||
2029 | /* Send suspend call to devices, hold the device core's dpm_sem */ | |
2030 | ret = device_suspend(PMSG_SUSPEND); | |
2031 | if (ret) { | |
2032 | broadcast_wake(); | |
2033 | printk(KERN_ERR "Driver sleep failed\n"); | |
2034 | return -EBUSY; | |
2035 | } | |
2036 | ||
d565dd3b BH |
2037 | #ifdef CONFIG_PMAC_BACKLIGHT |
2038 | /* Tell backlight code not to muck around with the chip anymore */ | |
2039 | pmu_backlight_set_sleep(1); | |
2040 | #endif | |
2041 | ||
5b9ca526 BH |
2042 | /* Call platform functions marked "on sleep" */ |
2043 | pmac_pfunc_i2c_suspend(); | |
2044 | pmac_pfunc_base_suspend(); | |
2045 | ||
e521dca6 | 2046 | /* Stop preemption */ |
1da177e4 LT |
2047 | preempt_disable(); |
2048 | ||
2049 | /* Make sure the decrementer won't interrupt us */ | |
2050 | asm volatile("mtdec %0" : : "r" (0x7fffffff)); | |
2051 | /* Make sure any pending DEC interrupt occurring while we did | |
2052 | * the above didn't re-enable the DEC */ | |
2053 | mb(); | |
2054 | asm volatile("mtdec %0" : : "r" (0x7fffffff)); | |
2055 | ||
2056 | /* We can now disable MSR_EE. This code of course works properly only | |
2057 | * on UP machines... For SMP, if we ever implement sleep, we'll have to | |
2058 | * stop the "other" CPUs way before we do all that stuff. | |
2059 | */ | |
2060 | local_irq_disable(); | |
2061 | ||
2062 | /* Broadcast power down irq | |
2063 | * This isn't that useful in most cases (only directly wired devices can | |
2064 | * use this but still... This will take care of sysdev's as well, so | |
2065 | * we exit from here with local irqs disabled and PIC off. | |
2066 | */ | |
bf2049f9 | 2067 | ret = device_power_down(PMSG_SUSPEND); |
1da177e4 LT |
2068 | if (ret) { |
2069 | wakeup_decrementer(); | |
2070 | local_irq_enable(); | |
2071 | preempt_enable(); | |
2072 | device_resume(); | |
2073 | broadcast_wake(); | |
2074 | printk(KERN_ERR "Driver powerdown failed\n"); | |
2075 | return -EBUSY; | |
2076 | } | |
2077 | ||
5474c120 MH |
2078 | /* Wait for completion of async requests */ |
2079 | while (!batt_req.complete) | |
1da177e4 LT |
2080 | pmu_poll(); |
2081 | ||
2082 | /* Giveup the lazy FPU & vec so we don't have to back them | |
2083 | * up from the low level code | |
2084 | */ | |
2085 | enable_kernel_fp(); | |
2086 | ||
2087 | #ifdef CONFIG_ALTIVEC | |
2088 | if (cpu_has_feature(CPU_FTR_ALTIVEC)) | |
2089 | enable_kernel_altivec(); | |
2090 | #endif /* CONFIG_ALTIVEC */ | |
2091 | ||
2092 | return 0; | |
2093 | } | |
2094 | ||
aacaf9bd | 2095 | static int |
1da177e4 LT |
2096 | pmac_wakeup_devices(void) |
2097 | { | |
2098 | mdelay(100); | |
2099 | ||
d565dd3b BH |
2100 | #ifdef CONFIG_PMAC_BACKLIGHT |
2101 | /* Tell backlight code it can use the chip again */ | |
2102 | pmu_backlight_set_sleep(0); | |
2103 | #endif | |
2104 | ||
1da177e4 LT |
2105 | /* Power back up system devices (including the PIC) */ |
2106 | device_power_up(); | |
2107 | ||
2108 | /* Force a poll of ADB interrupts */ | |
2109 | adb_int_pending = 1; | |
2110 | via_pmu_interrupt(0, NULL, NULL); | |
2111 | ||
2112 | /* Restart jiffies & scheduling */ | |
2113 | wakeup_decrementer(); | |
2114 | ||
2115 | /* Re-enable local CPU interrupts */ | |
2116 | local_irq_enable(); | |
b16eeb47 | 2117 | mdelay(10); |
1da177e4 LT |
2118 | preempt_enable(); |
2119 | ||
5b9ca526 BH |
2120 | /* Call platform functions marked "on wake" */ |
2121 | pmac_pfunc_base_resume(); | |
2122 | pmac_pfunc_i2c_resume(); | |
2123 | ||
1da177e4 LT |
2124 | /* Resume devices */ |
2125 | device_resume(); | |
2126 | ||
2127 | /* Notify old style drivers */ | |
2128 | broadcast_wake(); | |
2129 | ||
2130 | pm_restore_console(); | |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | ||
2135 | #define GRACKLE_PM (1<<7) | |
2136 | #define GRACKLE_DOZE (1<<5) | |
2137 | #define GRACKLE_NAP (1<<4) | |
2138 | #define GRACKLE_SLEEP (1<<3) | |
2139 | ||
3bea6313 | 2140 | static int powerbook_sleep_grackle(void) |
1da177e4 LT |
2141 | { |
2142 | unsigned long save_l2cr; | |
2143 | unsigned short pmcr1; | |
2144 | struct adb_request req; | |
2145 | int ret; | |
2146 | struct pci_dev *grackle; | |
2147 | ||
2148 | grackle = pci_find_slot(0, 0); | |
2149 | if (!grackle) | |
2150 | return -ENODEV; | |
2151 | ||
2152 | ret = pmac_suspend_devices(); | |
2153 | if (ret) { | |
2154 | printk(KERN_ERR "Sleep rejected by devices\n"); | |
2155 | return ret; | |
2156 | } | |
2157 | ||
2158 | /* Turn off various things. Darwin does some retry tests here... */ | |
2159 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE); | |
2160 | pmu_wait_complete(&req); | |
2161 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL, | |
2162 | PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY); | |
2163 | pmu_wait_complete(&req); | |
2164 | ||
2165 | /* For 750, save backside cache setting and disable it */ | |
2166 | save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ | |
2167 | ||
2168 | if (!__fake_sleep) { | |
2169 | /* Ask the PMU to put us to sleep */ | |
2170 | pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); | |
2171 | pmu_wait_complete(&req); | |
2172 | } | |
2173 | ||
2174 | /* The VIA is supposed not to be restored correctly*/ | |
2175 | save_via_state(); | |
2176 | /* We shut down some HW */ | |
2177 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1); | |
2178 | ||
2179 | pci_read_config_word(grackle, 0x70, &pmcr1); | |
2180 | /* Apparently, MacOS uses NAP mode for Grackle ??? */ | |
2181 | pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP); | |
2182 | pmcr1 |= GRACKLE_PM|GRACKLE_NAP; | |
2183 | pci_write_config_word(grackle, 0x70, pmcr1); | |
2184 | ||
2185 | /* Call low-level ASM sleep handler */ | |
2186 | if (__fake_sleep) | |
2187 | mdelay(5000); | |
2188 | else | |
2189 | low_sleep_handler(); | |
2190 | ||
2191 | /* We're awake again, stop grackle PM */ | |
2192 | pci_read_config_word(grackle, 0x70, &pmcr1); | |
2193 | pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP); | |
2194 | pci_write_config_word(grackle, 0x70, pmcr1); | |
2195 | ||
2196 | /* Make sure the PMU is idle */ | |
2197 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0); | |
2198 | restore_via_state(); | |
2199 | ||
2200 | /* Restore L2 cache */ | |
2201 | if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) | |
2202 | _set_L2CR(save_l2cr); | |
2203 | ||
2204 | /* Restore userland MMU context */ | |
6218a761 | 2205 | set_context(current->active_mm->context.id, current->active_mm->pgd); |
1da177e4 LT |
2206 | |
2207 | /* Power things up */ | |
2208 | pmu_unlock(); | |
2209 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); | |
2210 | pmu_wait_complete(&req); | |
2211 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, | |
2212 | PMU_POW0_ON|PMU_POW0_HARD_DRIVE); | |
2213 | pmu_wait_complete(&req); | |
2214 | pmu_request(&req, NULL, 2, PMU_POWER_CTRL, | |
2215 | PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY); | |
2216 | pmu_wait_complete(&req); | |
2217 | ||
2218 | pmac_wakeup_devices(); | |
2219 | ||
2220 | return 0; | |
2221 | } | |
2222 | ||
aacaf9bd | 2223 | static int |
1da177e4 LT |
2224 | powerbook_sleep_Core99(void) |
2225 | { | |
2226 | unsigned long save_l2cr; | |
2227 | unsigned long save_l3cr; | |
2228 | struct adb_request req; | |
2229 | int ret; | |
2230 | ||
2231 | if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) { | |
2232 | printk(KERN_ERR "Sleep mode not supported on this machine\n"); | |
2233 | return -ENOSYS; | |
2234 | } | |
2235 | ||
2236 | if (num_online_cpus() > 1 || cpu_is_offline(0)) | |
2237 | return -EAGAIN; | |
2238 | ||
2239 | ret = pmac_suspend_devices(); | |
2240 | if (ret) { | |
2241 | printk(KERN_ERR "Sleep rejected by devices\n"); | |
2242 | return ret; | |
2243 | } | |
2244 | ||
b16eeb47 BH |
2245 | /* Stop environment and ADB interrupts */ |
2246 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0); | |
2247 | pmu_wait_complete(&req); | |
1da177e4 LT |
2248 | |
2249 | /* Tell PMU what events will wake us up */ | |
2250 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS, | |
2251 | 0xff, 0xff); | |
2252 | pmu_wait_complete(&req); | |
2253 | pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS, | |
2254 | 0, PMU_PWR_WAKEUP_KEY | | |
2255 | (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0)); | |
2256 | pmu_wait_complete(&req); | |
2257 | ||
2258 | /* Save the state of the L2 and L3 caches */ | |
2259 | save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ | |
2260 | save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ | |
2261 | ||
2262 | if (!__fake_sleep) { | |
2263 | /* Ask the PMU to put us to sleep */ | |
2264 | pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); | |
2265 | pmu_wait_complete(&req); | |
2266 | } | |
2267 | ||
2268 | /* The VIA is supposed not to be restored correctly*/ | |
2269 | save_via_state(); | |
2270 | ||
2271 | /* Shut down various ASICs. There's a chance that we can no longer | |
2272 | * talk to the PMU after this, so I moved it to _after_ sending the | |
2273 | * sleep command to it. Still need to be checked. | |
2274 | */ | |
2275 | pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1); | |
2276 | ||
2277 | /* Call low-level ASM sleep handler */ | |
2278 | if (__fake_sleep) | |
2279 | mdelay(5000); | |
2280 | else | |
2281 | low_sleep_handler(); | |
2282 | ||
2283 | /* Restore Apple core ASICs state */ | |
2284 | pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0); | |
2285 | ||
2286 | /* Restore VIA */ | |
2287 | restore_via_state(); | |
2288 | ||
0086b5ec BH |
2289 | /* tweak LPJ before cpufreq is there */ |
2290 | loops_per_jiffy *= 2; | |
2291 | ||
1da177e4 LT |
2292 | /* Restore video */ |
2293 | pmac_call_early_video_resume(); | |
2294 | ||
2295 | /* Restore L2 cache */ | |
2296 | if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) | |
2297 | _set_L2CR(save_l2cr); | |
2298 | /* Restore L3 cache */ | |
2299 | if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0) | |
2300 | _set_L3CR(save_l3cr); | |
2301 | ||
2302 | /* Restore userland MMU context */ | |
6218a761 | 2303 | set_context(current->active_mm->context.id, current->active_mm->pgd); |
1da177e4 LT |
2304 | |
2305 | /* Tell PMU we are ready */ | |
2306 | pmu_unlock(); | |
2307 | pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); | |
2308 | pmu_wait_complete(&req); | |
2309 | pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); | |
2310 | pmu_wait_complete(&req); | |
2311 | ||
0086b5ec BH |
2312 | /* Restore LPJ, cpufreq will adjust the cpu frequency */ |
2313 | loops_per_jiffy /= 2; | |
2314 | ||
1da177e4 LT |
2315 | pmac_wakeup_devices(); |
2316 | ||
2317 | return 0; | |
2318 | } | |
2319 | ||
2320 | #define PB3400_MEM_CTRL 0xf8000000 | |
2321 | #define PB3400_MEM_CTRL_SLEEP 0x70 | |
2322 | ||
aacaf9bd | 2323 | static int |
1da177e4 LT |
2324 | powerbook_sleep_3400(void) |
2325 | { | |
2326 | int ret, i, x; | |
2327 | unsigned int hid0; | |
2328 | unsigned long p; | |
2329 | struct adb_request sleep_req; | |
2330 | void __iomem *mem_ctrl; | |
2331 | unsigned int __iomem *mem_ctrl_sleep; | |
2332 | ||
2333 | /* first map in the memory controller registers */ | |
2334 | mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100); | |
2335 | if (mem_ctrl == NULL) { | |
2336 | printk("powerbook_sleep_3400: ioremap failed\n"); | |
2337 | return -ENOMEM; | |
2338 | } | |
2339 | mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP; | |
2340 | ||
2341 | /* Allocate room for PCI save */ | |
2342 | pbook_alloc_pci_save(); | |
2343 | ||
2344 | ret = pmac_suspend_devices(); | |
2345 | if (ret) { | |
2346 | pbook_free_pci_save(); | |
2347 | printk(KERN_ERR "Sleep rejected by devices\n"); | |
2348 | return ret; | |
2349 | } | |
2350 | ||
2351 | /* Save the state of PCI config space for some slots */ | |
2352 | pbook_pci_save(); | |
2353 | ||
2354 | /* Set the memory controller to keep the memory refreshed | |
2355 | while we're asleep */ | |
2356 | for (i = 0x403f; i >= 0x4000; --i) { | |
2357 | out_be32(mem_ctrl_sleep, i); | |
2358 | do { | |
2359 | x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff; | |
2360 | } while (x == 0); | |
2361 | if (x >= 0x100) | |
2362 | break; | |
2363 | } | |
2364 | ||
2365 | /* Ask the PMU to put us to sleep */ | |
2366 | pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); | |
2367 | while (!sleep_req.complete) | |
2368 | mb(); | |
2369 | ||
2370 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1); | |
2371 | ||
2372 | /* displacement-flush the L2 cache - necessary? */ | |
2373 | for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000) | |
2374 | i = *(volatile int *)p; | |
2375 | asleep = 1; | |
2376 | ||
2377 | /* Put the CPU into sleep mode */ | |
21fe3301 | 2378 | hid0 = mfspr(SPRN_HID0); |
1da177e4 | 2379 | hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP; |
21fe3301 BH |
2380 | mtspr(SPRN_HID0, hid0); |
2381 | mtmsr(mfmsr() | MSR_POW | MSR_EE); | |
1da177e4 LT |
2382 | udelay(10); |
2383 | ||
2384 | /* OK, we're awake again, start restoring things */ | |
2385 | out_be32(mem_ctrl_sleep, 0x3f); | |
2386 | pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0); | |
2387 | pbook_pci_restore(); | |
2388 | pmu_unlock(); | |
2389 | ||
2390 | /* wait for the PMU interrupt sequence to complete */ | |
2391 | while (asleep) | |
2392 | mb(); | |
2393 | ||
2394 | pmac_wakeup_devices(); | |
2395 | pbook_free_pci_save(); | |
2396 | iounmap(mem_ctrl); | |
2397 | ||
2398 | return 0; | |
2399 | } | |
2400 | ||
a0005034 | 2401 | #endif /* CONFIG_PM && CONFIG_PPC32 */ |
8c870933 | 2402 | |
1da177e4 LT |
2403 | /* |
2404 | * Support for /dev/pmu device | |
2405 | */ | |
2406 | #define RB_SIZE 0x10 | |
2407 | struct pmu_private { | |
2408 | struct list_head list; | |
2409 | int rb_get; | |
2410 | int rb_put; | |
2411 | struct rb_entry { | |
2412 | unsigned short len; | |
2413 | unsigned char data[16]; | |
2414 | } rb_buf[RB_SIZE]; | |
2415 | wait_queue_head_t wait; | |
2416 | spinlock_t lock; | |
2417 | #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) | |
2418 | int backlight_locker; | |
4b755999 | 2419 | #endif |
1da177e4 LT |
2420 | }; |
2421 | ||
2422 | static LIST_HEAD(all_pmu_pvt); | |
aacaf9bd | 2423 | static DEFINE_SPINLOCK(all_pvt_lock); |
1da177e4 | 2424 | |
aacaf9bd | 2425 | static void |
1da177e4 LT |
2426 | pmu_pass_intr(unsigned char *data, int len) |
2427 | { | |
2428 | struct pmu_private *pp; | |
2429 | struct list_head *list; | |
2430 | int i; | |
2431 | unsigned long flags; | |
2432 | ||
2433 | if (len > sizeof(pp->rb_buf[0].data)) | |
2434 | len = sizeof(pp->rb_buf[0].data); | |
2435 | spin_lock_irqsave(&all_pvt_lock, flags); | |
2436 | for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) { | |
2437 | pp = list_entry(list, struct pmu_private, list); | |
2438 | spin_lock(&pp->lock); | |
2439 | i = pp->rb_put + 1; | |
2440 | if (i >= RB_SIZE) | |
2441 | i = 0; | |
2442 | if (i != pp->rb_get) { | |
2443 | struct rb_entry *rp = &pp->rb_buf[pp->rb_put]; | |
2444 | rp->len = len; | |
2445 | memcpy(rp->data, data, len); | |
2446 | pp->rb_put = i; | |
2447 | wake_up_interruptible(&pp->wait); | |
2448 | } | |
2449 | spin_unlock(&pp->lock); | |
2450 | } | |
2451 | spin_unlock_irqrestore(&all_pvt_lock, flags); | |
2452 | } | |
2453 | ||
aacaf9bd | 2454 | static int |
1da177e4 LT |
2455 | pmu_open(struct inode *inode, struct file *file) |
2456 | { | |
2457 | struct pmu_private *pp; | |
2458 | unsigned long flags; | |
2459 | ||
2460 | pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL); | |
2461 | if (pp == 0) | |
2462 | return -ENOMEM; | |
2463 | pp->rb_get = pp->rb_put = 0; | |
2464 | spin_lock_init(&pp->lock); | |
2465 | init_waitqueue_head(&pp->wait); | |
2466 | spin_lock_irqsave(&all_pvt_lock, flags); | |
2467 | #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) | |
2468 | pp->backlight_locker = 0; | |
4b755999 | 2469 | #endif |
1da177e4 LT |
2470 | list_add(&pp->list, &all_pmu_pvt); |
2471 | spin_unlock_irqrestore(&all_pvt_lock, flags); | |
2472 | file->private_data = pp; | |
2473 | return 0; | |
2474 | } | |
2475 | ||
aacaf9bd | 2476 | static ssize_t |
1da177e4 LT |
2477 | pmu_read(struct file *file, char __user *buf, |
2478 | size_t count, loff_t *ppos) | |
2479 | { | |
2480 | struct pmu_private *pp = file->private_data; | |
2481 | DECLARE_WAITQUEUE(wait, current); | |
2482 | unsigned long flags; | |
2483 | int ret = 0; | |
2484 | ||
2485 | if (count < 1 || pp == 0) | |
2486 | return -EINVAL; | |
2487 | if (!access_ok(VERIFY_WRITE, buf, count)) | |
2488 | return -EFAULT; | |
2489 | ||
2490 | spin_lock_irqsave(&pp->lock, flags); | |
2491 | add_wait_queue(&pp->wait, &wait); | |
2492 | current->state = TASK_INTERRUPTIBLE; | |
2493 | ||
2494 | for (;;) { | |
2495 | ret = -EAGAIN; | |
2496 | if (pp->rb_get != pp->rb_put) { | |
2497 | int i = pp->rb_get; | |
2498 | struct rb_entry *rp = &pp->rb_buf[i]; | |
2499 | ret = rp->len; | |
2500 | spin_unlock_irqrestore(&pp->lock, flags); | |
2501 | if (ret > count) | |
2502 | ret = count; | |
2503 | if (ret > 0 && copy_to_user(buf, rp->data, ret)) | |
2504 | ret = -EFAULT; | |
2505 | if (++i >= RB_SIZE) | |
2506 | i = 0; | |
2507 | spin_lock_irqsave(&pp->lock, flags); | |
2508 | pp->rb_get = i; | |
2509 | } | |
2510 | if (ret >= 0) | |
2511 | break; | |
2512 | if (file->f_flags & O_NONBLOCK) | |
2513 | break; | |
2514 | ret = -ERESTARTSYS; | |
2515 | if (signal_pending(current)) | |
2516 | break; | |
2517 | spin_unlock_irqrestore(&pp->lock, flags); | |
2518 | schedule(); | |
2519 | spin_lock_irqsave(&pp->lock, flags); | |
2520 | } | |
2521 | current->state = TASK_RUNNING; | |
2522 | remove_wait_queue(&pp->wait, &wait); | |
2523 | spin_unlock_irqrestore(&pp->lock, flags); | |
2524 | ||
2525 | return ret; | |
2526 | } | |
2527 | ||
aacaf9bd | 2528 | static ssize_t |
1da177e4 LT |
2529 | pmu_write(struct file *file, const char __user *buf, |
2530 | size_t count, loff_t *ppos) | |
2531 | { | |
2532 | return 0; | |
2533 | } | |
2534 | ||
aacaf9bd | 2535 | static unsigned int |
1da177e4 LT |
2536 | pmu_fpoll(struct file *filp, poll_table *wait) |
2537 | { | |
2538 | struct pmu_private *pp = filp->private_data; | |
2539 | unsigned int mask = 0; | |
2540 | unsigned long flags; | |
2541 | ||
2542 | if (pp == 0) | |
2543 | return 0; | |
2544 | poll_wait(filp, &pp->wait, wait); | |
2545 | spin_lock_irqsave(&pp->lock, flags); | |
2546 | if (pp->rb_get != pp->rb_put) | |
2547 | mask |= POLLIN; | |
2548 | spin_unlock_irqrestore(&pp->lock, flags); | |
2549 | return mask; | |
2550 | } | |
2551 | ||
aacaf9bd | 2552 | static int |
1da177e4 LT |
2553 | pmu_release(struct inode *inode, struct file *file) |
2554 | { | |
2555 | struct pmu_private *pp = file->private_data; | |
2556 | unsigned long flags; | |
2557 | ||
2558 | lock_kernel(); | |
2559 | if (pp != 0) { | |
2560 | file->private_data = NULL; | |
2561 | spin_lock_irqsave(&all_pvt_lock, flags); | |
2562 | list_del(&pp->list); | |
2563 | spin_unlock_irqrestore(&all_pvt_lock, flags); | |
4b755999 | 2564 | |
1da177e4 | 2565 | #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) |
4b755999 MH |
2566 | if (pp->backlight_locker) |
2567 | pmac_backlight_enable(); | |
2568 | #endif | |
2569 | ||
1da177e4 LT |
2570 | kfree(pp); |
2571 | } | |
2572 | unlock_kernel(); | |
2573 | return 0; | |
2574 | } | |
2575 | ||
aacaf9bd | 2576 | static int |
1da177e4 LT |
2577 | pmu_ioctl(struct inode * inode, struct file *filp, |
2578 | u_int cmd, u_long arg) | |
2579 | { | |
1da177e4 | 2580 | __u32 __user *argp = (__u32 __user *)arg; |
8c870933 | 2581 | int error = -EINVAL; |
1da177e4 LT |
2582 | |
2583 | switch (cmd) { | |
a0005034 | 2584 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 LT |
2585 | case PMU_IOC_SLEEP: |
2586 | if (!capable(CAP_SYS_ADMIN)) | |
2587 | return -EACCES; | |
2588 | if (sleep_in_progress) | |
2589 | return -EBUSY; | |
2590 | sleep_in_progress = 1; | |
2591 | switch (pmu_kind) { | |
2592 | case PMU_OHARE_BASED: | |
2593 | error = powerbook_sleep_3400(); | |
2594 | break; | |
2595 | case PMU_HEATHROW_BASED: | |
2596 | case PMU_PADDINGTON_BASED: | |
2597 | error = powerbook_sleep_grackle(); | |
2598 | break; | |
2599 | case PMU_KEYLARGO_BASED: | |
2600 | error = powerbook_sleep_Core99(); | |
2601 | break; | |
2602 | default: | |
2603 | error = -ENOSYS; | |
2604 | } | |
2605 | sleep_in_progress = 0; | |
8c870933 | 2606 | break; |
1da177e4 LT |
2607 | case PMU_IOC_CAN_SLEEP: |
2608 | if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) | |
2609 | return put_user(0, argp); | |
2610 | else | |
2611 | return put_user(1, argp); | |
a0005034 | 2612 | #endif /* CONFIG_PM && CONFIG_PPC32 */ |
1da177e4 | 2613 | |
5474c120 MH |
2614 | #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY |
2615 | /* Compatibility ioctl's for backlight */ | |
1da177e4 | 2616 | case PMU_IOC_GET_BACKLIGHT: |
5474c120 MH |
2617 | { |
2618 | int brightness; | |
2619 | ||
1da177e4 LT |
2620 | if (sleep_in_progress) |
2621 | return -EBUSY; | |
5474c120 MH |
2622 | |
2623 | brightness = pmac_backlight_get_legacy_brightness(); | |
2624 | if (brightness < 0) | |
2625 | return brightness; | |
2626 | else | |
2627 | return put_user(brightness, argp); | |
2628 | ||
2629 | } | |
1da177e4 LT |
2630 | case PMU_IOC_SET_BACKLIGHT: |
2631 | { | |
5474c120 MH |
2632 | int brightness; |
2633 | ||
1da177e4 LT |
2634 | if (sleep_in_progress) |
2635 | return -EBUSY; | |
5474c120 MH |
2636 | |
2637 | error = get_user(brightness, argp); | |
2638 | if (error) | |
2639 | return error; | |
2640 | ||
2641 | return pmac_backlight_set_legacy_brightness(brightness); | |
1da177e4 LT |
2642 | } |
2643 | #ifdef CONFIG_INPUT_ADBHID | |
2644 | case PMU_IOC_GRAB_BACKLIGHT: { | |
8c870933 | 2645 | struct pmu_private *pp = filp->private_data; |
8c870933 | 2646 | |
1da177e4 LT |
2647 | if (pp->backlight_locker) |
2648 | return 0; | |
4b755999 | 2649 | |
1da177e4 | 2650 | pp->backlight_locker = 1; |
4b755999 MH |
2651 | pmac_backlight_disable(); |
2652 | ||
1da177e4 LT |
2653 | return 0; |
2654 | } | |
2655 | #endif /* CONFIG_INPUT_ADBHID */ | |
5474c120 | 2656 | #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */ |
4b755999 | 2657 | |
1da177e4 LT |
2658 | case PMU_IOC_GET_MODEL: |
2659 | return put_user(pmu_kind, argp); | |
2660 | case PMU_IOC_HAS_ADB: | |
2661 | return put_user(pmu_has_adb, argp); | |
2662 | } | |
8c870933 | 2663 | return error; |
1da177e4 LT |
2664 | } |
2665 | ||
aacaf9bd | 2666 | static struct file_operations pmu_device_fops = { |
1da177e4 LT |
2667 | .read = pmu_read, |
2668 | .write = pmu_write, | |
2669 | .poll = pmu_fpoll, | |
2670 | .ioctl = pmu_ioctl, | |
2671 | .open = pmu_open, | |
2672 | .release = pmu_release, | |
2673 | }; | |
2674 | ||
aacaf9bd | 2675 | static struct miscdevice pmu_device = { |
1da177e4 LT |
2676 | PMU_MINOR, "pmu", &pmu_device_fops |
2677 | }; | |
2678 | ||
8c870933 | 2679 | static int pmu_device_init(void) |
1da177e4 LT |
2680 | { |
2681 | if (!via) | |
8c870933 | 2682 | return 0; |
1da177e4 LT |
2683 | if (misc_register(&pmu_device) < 0) |
2684 | printk(KERN_ERR "via-pmu: cannot register misc device.\n"); | |
8c870933 | 2685 | return 0; |
1da177e4 | 2686 | } |
8c870933 BH |
2687 | device_initcall(pmu_device_init); |
2688 | ||
1da177e4 LT |
2689 | |
2690 | #ifdef DEBUG_SLEEP | |
aacaf9bd | 2691 | static inline void |
1da177e4 LT |
2692 | polled_handshake(volatile unsigned char __iomem *via) |
2693 | { | |
2694 | via[B] &= ~TREQ; eieio(); | |
2695 | while ((via[B] & TACK) != 0) | |
2696 | ; | |
2697 | via[B] |= TREQ; eieio(); | |
2698 | while ((via[B] & TACK) == 0) | |
2699 | ; | |
2700 | } | |
2701 | ||
aacaf9bd | 2702 | static inline void |
1da177e4 LT |
2703 | polled_send_byte(volatile unsigned char __iomem *via, int x) |
2704 | { | |
2705 | via[ACR] |= SR_OUT | SR_EXT; eieio(); | |
2706 | via[SR] = x; eieio(); | |
2707 | polled_handshake(via); | |
2708 | } | |
2709 | ||
aacaf9bd | 2710 | static inline int |
1da177e4 LT |
2711 | polled_recv_byte(volatile unsigned char __iomem *via) |
2712 | { | |
2713 | int x; | |
2714 | ||
2715 | via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio(); | |
2716 | x = via[SR]; eieio(); | |
2717 | polled_handshake(via); | |
2718 | x = via[SR]; eieio(); | |
2719 | return x; | |
2720 | } | |
2721 | ||
aacaf9bd | 2722 | int |
1da177e4 LT |
2723 | pmu_polled_request(struct adb_request *req) |
2724 | { | |
2725 | unsigned long flags; | |
2726 | int i, l, c; | |
2727 | volatile unsigned char __iomem *v = via; | |
2728 | ||
2729 | req->complete = 1; | |
2730 | c = req->data[0]; | |
2731 | l = pmu_data_len[c][0]; | |
2732 | if (l >= 0 && req->nbytes != l + 1) | |
2733 | return -EINVAL; | |
2734 | ||
2735 | local_irq_save(flags); | |
2736 | while (pmu_state != idle) | |
2737 | pmu_poll(); | |
2738 | ||
2739 | while ((via[B] & TACK) == 0) | |
2740 | ; | |
2741 | polled_send_byte(v, c); | |
2742 | if (l < 0) { | |
2743 | l = req->nbytes - 1; | |
2744 | polled_send_byte(v, l); | |
2745 | } | |
2746 | for (i = 1; i <= l; ++i) | |
2747 | polled_send_byte(v, req->data[i]); | |
2748 | ||
2749 | l = pmu_data_len[c][1]; | |
2750 | if (l < 0) | |
2751 | l = polled_recv_byte(v); | |
2752 | for (i = 0; i < l; ++i) | |
2753 | req->reply[i + req->reply_len] = polled_recv_byte(v); | |
2754 | ||
2755 | if (req->done) | |
2756 | (*req->done)(req); | |
2757 | ||
2758 | local_irq_restore(flags); | |
2759 | return 0; | |
2760 | } | |
2761 | #endif /* DEBUG_SLEEP */ | |
2762 | ||
2763 | ||
2764 | /* FIXME: This is a temporary set of callbacks to enable us | |
2765 | * to do suspend-to-disk. | |
2766 | */ | |
2767 | ||
a0005034 | 2768 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 LT |
2769 | |
2770 | static int pmu_sys_suspended = 0; | |
2771 | ||
3bfffd97 | 2772 | static int pmu_sys_suspend(struct sys_device *sysdev, pm_message_t state) |
1da177e4 | 2773 | { |
ca078bae | 2774 | if (state.event != PM_EVENT_SUSPEND || pmu_sys_suspended) |
1da177e4 LT |
2775 | return 0; |
2776 | ||
2777 | /* Suspend PMU event interrupts */ | |
2778 | pmu_suspend(); | |
2779 | ||
2780 | pmu_sys_suspended = 1; | |
2781 | return 0; | |
2782 | } | |
2783 | ||
2784 | static int pmu_sys_resume(struct sys_device *sysdev) | |
2785 | { | |
2786 | struct adb_request req; | |
2787 | ||
2788 | if (!pmu_sys_suspended) | |
2789 | return 0; | |
2790 | ||
2791 | /* Tell PMU we are ready */ | |
2792 | pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); | |
2793 | pmu_wait_complete(&req); | |
2794 | ||
2795 | /* Resume PMU event interrupts */ | |
2796 | pmu_resume(); | |
2797 | ||
2798 | pmu_sys_suspended = 0; | |
2799 | ||
2800 | return 0; | |
2801 | } | |
2802 | ||
a0005034 | 2803 | #endif /* CONFIG_PM && CONFIG_PPC32 */ |
1da177e4 LT |
2804 | |
2805 | static struct sysdev_class pmu_sysclass = { | |
2806 | set_kset_name("pmu"), | |
2807 | }; | |
2808 | ||
2809 | static struct sys_device device_pmu = { | |
2810 | .id = 0, | |
2811 | .cls = &pmu_sysclass, | |
2812 | }; | |
2813 | ||
2814 | static struct sysdev_driver driver_pmu = { | |
a0005034 | 2815 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 LT |
2816 | .suspend = &pmu_sys_suspend, |
2817 | .resume = &pmu_sys_resume, | |
a0005034 | 2818 | #endif /* CONFIG_PM && CONFIG_PPC32 */ |
1da177e4 LT |
2819 | }; |
2820 | ||
2821 | static int __init init_pmu_sysfs(void) | |
2822 | { | |
2823 | int rc; | |
2824 | ||
2825 | rc = sysdev_class_register(&pmu_sysclass); | |
2826 | if (rc) { | |
2827 | printk(KERN_ERR "Failed registering PMU sys class\n"); | |
2828 | return -ENODEV; | |
2829 | } | |
2830 | rc = sysdev_register(&device_pmu); | |
2831 | if (rc) { | |
2832 | printk(KERN_ERR "Failed registering PMU sys device\n"); | |
2833 | return -ENODEV; | |
2834 | } | |
2835 | rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu); | |
2836 | if (rc) { | |
2837 | printk(KERN_ERR "Failed registering PMU sys driver\n"); | |
2838 | return -ENODEV; | |
2839 | } | |
2840 | return 0; | |
2841 | } | |
2842 | ||
2843 | subsys_initcall(init_pmu_sysfs); | |
2844 | ||
2845 | EXPORT_SYMBOL(pmu_request); | |
730745a5 | 2846 | EXPORT_SYMBOL(pmu_queue_request); |
1da177e4 LT |
2847 | EXPORT_SYMBOL(pmu_poll); |
2848 | EXPORT_SYMBOL(pmu_poll_adb); | |
2849 | EXPORT_SYMBOL(pmu_wait_complete); | |
2850 | EXPORT_SYMBOL(pmu_suspend); | |
2851 | EXPORT_SYMBOL(pmu_resume); | |
2852 | EXPORT_SYMBOL(pmu_unlock); | |
a0005034 | 2853 | #if defined(CONFIG_PM) && defined(CONFIG_PPC32) |
1da177e4 LT |
2854 | EXPORT_SYMBOL(pmu_enable_irled); |
2855 | EXPORT_SYMBOL(pmu_battery_count); | |
2856 | EXPORT_SYMBOL(pmu_batteries); | |
2857 | EXPORT_SYMBOL(pmu_power_flags); | |
a0005034 | 2858 | #endif /* CONFIG_PM && CONFIG_PPC32 */ |
1da177e4 | 2859 |