blob: dee88e59f0d34be1359661368799d8546668eda7 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Johannes Bergf91266e2007-12-12 01:25:59 +110013 * Copyright (C) 2006-2007 Johannes Berg
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 *
15 * THIS DRIVER IS BECOMING A TOTAL MESS !
16 * - Cleanup atomically disabling reply to PMU events after
17 * a sleep or a freq. switch
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 *
19 */
20#include <stdarg.h>
Arnd Bergmannd851b6e2010-06-02 14:28:52 +020021#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/types.h>
23#include <linux/errno.h>
24#include <linux/kernel.h>
25#include <linux/delay.h>
26#include <linux/sched.h>
27#include <linux/miscdevice.h>
28#include <linux/blkdev.h>
29#include <linux/pci.h>
30#include <linux/slab.h>
31#include <linux/poll.h>
32#include <linux/adb.h>
33#include <linux/pmu.h>
34#include <linux/cuda.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <linux/module.h>
36#include <linux/spinlock.h>
37#include <linux/pm.h>
38#include <linux/proc_fs.h>
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +000039#include <linux/seq_file.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <linux/init.h>
41#include <linux/interrupt.h>
42#include <linux/device.h>
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +100043#include <linux/syscore_ops.h>
Nigel Cunningham7dfb7102006-12-06 20:34:23 -080044#include <linux/freezer.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/syscalls.h>
Dave Jones6002f542007-01-05 16:36:18 -080046#include <linux/suspend.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <linux/cpu.h>
Andreas Schwab4cc45872010-08-22 06:23:17 +000048#include <linux/compat.h>
Rob Herring5af50732013-09-17 14:28:33 -050049#include <linux/of_address.h>
50#include <linux/of_irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#include <asm/prom.h>
52#include <asm/machdep.h>
53#include <asm/io.h>
54#include <asm/pgtable.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#include <asm/sections.h>
56#include <asm/irq.h>
57#include <asm/pmac_feature.h>
Benjamin Herrenschmidt5b9ca522006-01-07 11:41:02 +110058#include <asm/pmac_pfunc.h>
59#include <asm/pmac_low_i2c.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#include <asm/uaccess.h>
61#include <asm/mmu_context.h>
62#include <asm/cputable.h>
63#include <asm/time.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070064#include <asm/backlight.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Johannes Berg9e8e30a2006-06-26 01:49:55 -040066#include "via-pmu-event.h"
67
Linus Torvalds1da177e2005-04-16 15:20:36 -070068/* Some compile options */
Johannes Bergf91266e2007-12-12 01:25:59 +110069#undef DEBUG_SLEEP
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
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
Arnd Bergmannd851b6e2010-06-02 14:28:52 +020077static DEFINE_MUTEX(pmu_info_proc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070078static volatile unsigned char __iomem *via;
79
80/* VIA registers - spaced 0x200 bytes apart */
81#define RS 0x200 /* skip between registers */
82#define B 0 /* B-side data */
83#define A RS /* A-side data */
84#define DIRB (2*RS) /* B-side direction (1=output) */
85#define DIRA (3*RS) /* A-side direction (1=output) */
86#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
87#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
88#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
89#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
90#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
91#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
92#define SR (10*RS) /* Shift register */
93#define ACR (11*RS) /* Auxiliary control register */
94#define PCR (12*RS) /* Peripheral control register */
95#define IFR (13*RS) /* Interrupt flag register */
96#define IER (14*RS) /* Interrupt enable register */
97#define ANH (15*RS) /* A-side data, no handshake */
98
99/* Bits in B data register: both active low */
100#define TACK 0x08 /* Transfer acknowledge (input) */
101#define TREQ 0x10 /* Transfer request (output) */
102
103/* Bits in ACR */
104#define SR_CTRL 0x1c /* Shift register control bits */
105#define SR_EXT 0x0c /* Shift on external clock */
106#define SR_OUT 0x10 /* Shift out if 1 */
107
108/* Bits in IFR and IER */
109#define IER_SET 0x80 /* set bits in IER */
110#define IER_CLR 0 /* clear bits in IER */
111#define SR_INT 0x04 /* Shift register full/empty */
112#define CB2_INT 0x08
113#define CB1_INT 0x10 /* transition on CB1 input */
114
115static volatile enum pmu_state {
116 idle,
117 sending,
118 intack,
119 reading,
120 reading_intr,
121 locked,
122} pmu_state;
123
124static volatile enum int_data_state {
125 int_data_empty,
126 int_data_fill,
127 int_data_ready,
128 int_data_flush
129} int_data_state[2] = { int_data_empty, int_data_empty };
130
131static struct adb_request *current_req;
132static struct adb_request *last_req;
133static struct adb_request *req_awaiting_reply;
134static unsigned char interrupt_data[2][32];
135static int interrupt_data_len[2];
136static int int_data_last;
137static unsigned char *reply_ptr;
138static int data_index;
139static int data_len;
140static volatile int adb_int_pending;
141static volatile int disable_poll;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142static struct device_node *vias;
143static int pmu_kind = PMU_UNKNOWN;
Olaf Hering87275852007-02-10 21:35:12 +0100144static int pmu_fully_inited;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145static int pmu_has_adb;
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100146static struct device_node *gpio_node;
Olaf Hering87275852007-02-10 21:35:12 +0100147static unsigned char __iomem *gpio_reg;
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000148static int gpio_irq = NO_IRQ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149static int gpio_irq_enabled = -1;
Olaf Hering87275852007-02-10 21:35:12 +0100150static volatile int pmu_suspended;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151static spinlock_t pmu_lock;
152static u8 pmu_intr_mask;
153static int pmu_version;
154static int drop_interrupts;
Johannes Bergf91266e2007-12-12 01:25:59 +1100155#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156static int option_lid_wakeup = 1;
Johannes Bergf91266e2007-12-12 01:25:59 +1100157#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158static unsigned long async_req_locks;
159static unsigned int pmu_irq_stats[11];
160
161static struct proc_dir_entry *proc_pmu_root;
162static struct proc_dir_entry *proc_pmu_info;
163static struct proc_dir_entry *proc_pmu_irqstats;
164static struct proc_dir_entry *proc_pmu_options;
165static int option_server_mode;
166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167int pmu_battery_count;
168int pmu_cur_battery;
Olaf Heringa334bdb2007-02-10 21:40:00 +0100169unsigned int pmu_power_flags = PMU_PWR_AC_PRESENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
171static int query_batt_timer = BATTERY_POLLING_COUNT;
172static struct adb_request batt_req;
173static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175int __fake_sleep;
176int asleep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178#ifdef CONFIG_ADB
Olaf Hering87275852007-02-10 21:35:12 +0100179static int adb_dev_map;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180static int pmu_adb_flags;
181
182static int pmu_probe(void);
183static int pmu_init(void);
184static int pmu_send_request(struct adb_request *req, int sync);
185static int pmu_adb_autopoll(int devs);
186static int pmu_adb_reset_bus(void);
187#endif /* CONFIG_ADB */
188
189static int init_pmu(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190static void pmu_start(void);
David Howells7d12e782006-10-05 14:55:46 +0100191static irqreturn_t via_pmu_interrupt(int irq, void *arg);
192static irqreturn_t gpio1_interrupt(int irq, void *arg);
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000193static const struct file_operations pmu_info_proc_fops;
194static const struct file_operations pmu_irqstats_proc_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195static void pmu_pass_intr(unsigned char *data, int len);
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000196static const struct file_operations pmu_battery_proc_fops;
197static const struct file_operations pmu_options_proc_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198
199#ifdef CONFIG_ADB
200struct adb_driver via_pmu_driver = {
201 "PMU",
202 pmu_probe,
203 pmu_init,
204 pmu_send_request,
205 pmu_adb_autopoll,
206 pmu_poll_adb,
207 pmu_adb_reset_bus
208};
209#endif /* CONFIG_ADB */
210
211extern void low_sleep_handler(void);
212extern void enable_kernel_altivec(void);
213extern void enable_kernel_fp(void);
214
215#ifdef DEBUG_SLEEP
216int pmu_polled_request(struct adb_request *req);
Johannes Bergf91266e2007-12-12 01:25:59 +1100217void pmu_blink(int n);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218#endif
219
220/*
221 * This table indicates for each PMU opcode:
222 * - the number of data bytes to be sent with the command, or -1
223 * if a length byte should be sent,
224 * - the number of response bytes which the PMU will return, or
225 * -1 if it will send a length byte.
226 */
Jon Loeligeraacaf9b2005-09-17 10:36:54 -0500227static const s8 pmu_data_len[256][2] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228/* 0 1 2 3 4 5 6 7 */
229/*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
230/*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
231/*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
232/*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
233/*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
234/*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
235/*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
236/*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
237/*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
238/*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
239/*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
240/*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
241/*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
242/*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
243/*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
244/*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
245/*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
246/*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
247/*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
248/*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
249/*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
250/*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
251/*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
252/*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
253/*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
254/*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
255/*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
256/*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
257/*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
258/*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
259/*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
260/*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
261};
262
263static char *pbook_type[] = {
264 "Unknown PowerBook",
265 "PowerBook 2400/3400/3500(G3)",
266 "PowerBook G3 Series",
267 "1999 PowerBook G3",
268 "Core99"
269};
270
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100271int __init find_via_pmu(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272{
Benjamin Herrenschmidtcc5d0182005-12-13 18:01:21 +1100273 u64 taddr;
Jeremy Kerr018a3d12006-07-12 15:40:29 +1000274 const u32 *reg;
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100275
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 if (via != 0)
277 return 1;
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100278 vias = of_find_node_by_name(NULL, "via-pmu");
279 if (vias == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
Stephen Rothwell01b27262007-04-27 13:41:15 +1000282 reg = of_get_property(vias, "reg", NULL);
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100283 if (reg == NULL) {
284 printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
285 goto fail;
286 }
287 taddr = of_translate_address(vias, reg);
Benjamin Herrenschmidtbb6b9b22005-11-30 16:54:12 +1100288 if (taddr == OF_BAD_ADDR) {
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100289 printk(KERN_ERR "via-pmu: Can't translate address !\n");
290 goto fail;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 }
292
293 spin_lock_init(&pmu_lock);
294
295 pmu_has_adb = 1;
296
297 pmu_intr_mask = PMU_INT_PCEJECT |
298 PMU_INT_SNDBRT |
299 PMU_INT_ADB |
300 PMU_INT_TICK;
301
302 if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
Stephen Rothwell55b61fe2007-05-03 17:26:52 +1000303 || of_device_is_compatible(vias->parent, "ohare")))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 pmu_kind = PMU_OHARE_BASED;
Stephen Rothwell55b61fe2007-05-03 17:26:52 +1000305 else if (of_device_is_compatible(vias->parent, "paddington"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 pmu_kind = PMU_PADDINGTON_BASED;
Stephen Rothwell55b61fe2007-05-03 17:26:52 +1000307 else if (of_device_is_compatible(vias->parent, "heathrow"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 pmu_kind = PMU_HEATHROW_BASED;
Stephen Rothwell55b61fe2007-05-03 17:26:52 +1000309 else if (of_device_is_compatible(vias->parent, "Keylargo")
310 || of_device_is_compatible(vias->parent, "K2-Keylargo")) {
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100311 struct device_node *gpiop;
Stephen Rothwell1658ab62007-04-24 13:51:59 +1000312 struct device_node *adbp;
Benjamin Herrenschmidtcc5d0182005-12-13 18:01:21 +1100313 u64 gaddr = OF_BAD_ADDR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314
315 pmu_kind = PMU_KEYLARGO_BASED;
Stephen Rothwell1658ab62007-04-24 13:51:59 +1000316 adbp = of_find_node_by_type(NULL, "adb");
317 pmu_has_adb = (adbp != NULL);
318 of_node_put(adbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 pmu_intr_mask = PMU_INT_PCEJECT |
320 PMU_INT_SNDBRT |
321 PMU_INT_ADB |
322 PMU_INT_TICK |
323 PMU_INT_ENVIRONMENT;
324
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100325 gpiop = of_find_node_by_name(NULL, "gpio");
326 if (gpiop) {
Stephen Rothwell01b27262007-04-27 13:41:15 +1000327 reg = of_get_property(gpiop, "reg", NULL);
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100328 if (reg)
329 gaddr = of_translate_address(gpiop, reg);
Benjamin Herrenschmidtcc5d0182005-12-13 18:01:21 +1100330 if (gaddr != OF_BAD_ADDR)
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100331 gpio_reg = ioremap(gaddr, 0x10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 }
Olaf Hering61e37ca2006-09-26 22:28:36 +0200333 if (gpio_reg == NULL) {
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100334 printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
Olaf Hering61e37ca2006-09-26 22:28:36 +0200335 goto fail_gpio;
336 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 } else
338 pmu_kind = PMU_UNKNOWN;
339
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100340 via = ioremap(taddr, 0x2000);
341 if (via == NULL) {
342 printk(KERN_ERR "via-pmu: Can't map address !\n");
343 goto fail;
344 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
346 out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
347 out_8(&via[IFR], 0x7f); /* clear IFR */
348
349 pmu_state = idle;
350
351 if (!init_pmu()) {
352 via = NULL;
353 return 0;
354 }
355
Benjamin Herrenschmidtbb6b9b22005-11-30 16:54:12 +1100356 printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
358
359 sys_ctrler = SYS_CTRLER_PMU;
360
361 return 1;
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100362 fail:
363 of_node_put(vias);
Olaf Hering61e37ca2006-09-26 22:28:36 +0200364 iounmap(gpio_reg);
365 gpio_reg = NULL;
366 fail_gpio:
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100367 vias = NULL;
368 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369}
370
371#ifdef CONFIG_ADB
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100372static int pmu_probe(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
374 return vias == NULL? -ENODEV: 0;
375}
376
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100377static int __init pmu_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378{
379 if (vias == NULL)
380 return -ENODEV;
381 return 0;
382}
383#endif /* CONFIG_ADB */
384
385/*
386 * We can't wait until pmu_init gets called, that happens too late.
387 * It happens after IDE and SCSI initialization, which can take a few
388 * seconds, and by that time the PMU could have given up on us and
389 * turned us off.
390 * Thus this is called with arch_initcall rather than device_initcall.
391 */
392static int __init via_pmu_start(void)
393{
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000394 unsigned int irq;
395
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 if (vias == NULL)
397 return -ENODEV;
398
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 batt_req.complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000401 irq = irq_of_parse_and_map(vias, 0);
402 if (irq == NO_IRQ) {
Michael Buesch7b52b442007-08-13 06:38:34 +1000403 printk(KERN_ERR "via-pmu: can't map interrupt\n");
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000404 return -ENODEV;
405 }
Ian Campbellba461f02010-07-29 11:16:34 +0100406 /* We set IRQF_NO_SUSPEND because we don't want the interrupt
407 * to be disabled between the 2 passes of driver suspend, we
408 * control our own disabling for that one
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +0000409 */
Ian Campbellba461f02010-07-29 11:16:34 +0100410 if (request_irq(irq, via_pmu_interrupt, IRQF_NO_SUSPEND,
411 "VIA-PMU", (void *)0)) {
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000412 printk(KERN_ERR "via-pmu: can't request irq %d\n", irq);
413 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 }
415
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100416 if (pmu_kind == PMU_KEYLARGO_BASED) {
417 gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
418 if (gpio_node == NULL)
419 gpio_node = of_find_node_by_name(NULL,
420 "pmu-interrupt");
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000421 if (gpio_node)
422 gpio_irq = irq_of_parse_and_map(gpio_node, 0);
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100423
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000424 if (gpio_irq != NO_IRQ) {
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +0000425 if (request_irq(gpio_irq, gpio1_interrupt, IRQF_TIMER,
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100426 "GPIO1 ADB", (void *)0))
427 printk(KERN_ERR "pmu: can't get irq %d"
428 " (GPIO1)\n", gpio_irq);
429 else
430 gpio_irq_enabled = 1;
431 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 }
433
434 /* Enable interrupts */
435 out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
436
437 pmu_fully_inited = 1;
438
439 /* Make sure PMU settle down before continuing. This is _very_ important
440 * since the IDE probe may shut interrupts down for quite a bit of time. If
441 * a PMU communication is pending while this happens, the PMU may timeout
442 * Not that on Core99 machines, the PMU keeps sending us environement
443 * messages, we should find a way to either fix IDE or make it call
444 * pmu_suspend() before masking interrupts. This can also happens while
445 * scolling with some fbdevs.
446 */
447 do {
448 pmu_poll();
449 } while (pmu_state != idle);
450
451 return 0;
452}
453
454arch_initcall(via_pmu_start);
455
456/*
457 * This has to be done after pci_init, which is a subsys_initcall.
458 */
459static int __init via_pmu_dev_init(void)
460{
461 if (vias == NULL)
462 return -ENODEV;
463
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464#ifdef CONFIG_PMAC_BACKLIGHT
Michael Hanselmann5474c122006-06-25 05:47:08 -0700465 /* Initialize backlight */
Michael Hanselmann4b755992006-07-30 03:04:19 -0700466 pmu_backlight_init();
Michael Hanselmann5474c122006-06-25 05:47:08 -0700467#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -0700469#ifdef CONFIG_PPC32
Grant Likely71a157e2010-02-01 21:34:14 -0700470 if (of_machine_is_compatible("AAPL,3400/2400") ||
471 of_machine_is_compatible("AAPL,3500")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
473 NULL, PMAC_MB_INFO_MODEL, 0);
474 pmu_battery_count = 1;
475 if (mb == PMAC_TYPE_COMET)
476 pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
477 else
478 pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
Grant Likely71a157e2010-02-01 21:34:14 -0700479 } else if (of_machine_is_compatible("AAPL,PowerBook1998") ||
480 of_machine_is_compatible("PowerBook1,1")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 pmu_battery_count = 2;
482 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
483 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
484 } else {
Stephen Rothwell30686ba2007-04-24 13:53:04 +1000485 struct device_node* prim =
486 of_find_node_by_name(NULL, "power-mgt");
Jeremy Kerr018a3d12006-07-12 15:40:29 +1000487 const u32 *prim_info = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 if (prim)
Stephen Rothwell01b27262007-04-27 13:41:15 +1000489 prim_info = of_get_property(prim, "prim-info", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 if (prim_info) {
491 /* Other stuffs here yet unknown */
492 pmu_battery_count = (prim_info[6] >> 16) & 0xff;
493 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
494 if (pmu_battery_count > 1)
495 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
496 }
Stephen Rothwell30686ba2007-04-24 13:53:04 +1000497 of_node_put(prim);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 }
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -0700499#endif /* CONFIG_PPC32 */
500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 /* Create /proc/pmu */
502 proc_pmu_root = proc_mkdir("pmu", NULL);
503 if (proc_pmu_root) {
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -0700504 long i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505
506 for (i=0; i<pmu_battery_count; i++) {
507 char title[16];
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -0700508 sprintf(title, "battery_%ld", i);
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000509 proc_pmu_batt[i] = proc_create_data(title, 0, proc_pmu_root,
510 &pmu_battery_proc_fops, (void *)i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000513 proc_pmu_info = proc_create("info", 0, proc_pmu_root, &pmu_info_proc_fops);
514 proc_pmu_irqstats = proc_create("interrupts", 0, proc_pmu_root,
515 &pmu_irqstats_proc_fops);
516 proc_pmu_options = proc_create("options", 0600, proc_pmu_root,
517 &pmu_options_proc_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 }
519 return 0;
520}
521
522device_initcall(via_pmu_dev_init);
523
Jon Loeligeraacaf9b2005-09-17 10:36:54 -0500524static int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525init_pmu(void)
526{
527 int timeout;
528 struct adb_request req;
529
530 out_8(&via[B], via[B] | TREQ); /* negate TREQ */
531 out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
532
533 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
534 timeout = 100000;
535 while (!req.complete) {
536 if (--timeout < 0) {
537 printk(KERN_ERR "init_pmu: no response from PMU\n");
538 return 0;
539 }
540 udelay(10);
541 pmu_poll();
542 }
543
544 /* ack all pending interrupts */
545 timeout = 100000;
546 interrupt_data[0][0] = 1;
547 while (interrupt_data[0][0] || pmu_state != idle) {
548 if (--timeout < 0) {
549 printk(KERN_ERR "init_pmu: timed out acking intrs\n");
550 return 0;
551 }
552 if (pmu_state == idle)
553 adb_int_pending = 1;
David Howells7d12e782006-10-05 14:55:46 +0100554 via_pmu_interrupt(0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 udelay(10);
556 }
557
558 /* Tell PMU we are ready. */
559 if (pmu_kind == PMU_KEYLARGO_BASED) {
560 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
561 while (!req.complete)
562 pmu_poll();
563 }
564
565 /* Read PMU version */
566 pmu_request(&req, NULL, 1, PMU_GET_VERSION);
567 pmu_wait_complete(&req);
568 if (req.reply_len > 0)
569 pmu_version = req.reply[0];
570
571 /* Read server mode setting */
572 if (pmu_kind == PMU_KEYLARGO_BASED) {
573 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
574 PMU_PWR_GET_POWERUP_EVENTS);
575 pmu_wait_complete(&req);
576 if (req.reply_len == 2) {
577 if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
578 option_server_mode = 1;
579 printk(KERN_INFO "via-pmu: Server Mode is %s\n",
580 option_server_mode ? "enabled" : "disabled");
581 }
582 }
583 return 1;
584}
585
586int
587pmu_get_model(void)
588{
589 return pmu_kind;
590}
591
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592static void pmu_set_server_mode(int server_mode)
593{
594 struct adb_request req;
595
596 if (pmu_kind != PMU_KEYLARGO_BASED)
597 return;
598
599 option_server_mode = server_mode;
600 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS);
601 pmu_wait_complete(&req);
602 if (req.reply_len < 2)
603 return;
604 if (server_mode)
605 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
606 PMU_PWR_SET_POWERUP_EVENTS,
607 req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
608 else
609 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
610 PMU_PWR_CLR_POWERUP_EVENTS,
611 req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
612 pmu_wait_complete(&req);
613}
614
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615/* This new version of the code for 2400/3400/3500 powerbooks
616 * is inspired from the implementation in gkrellm-pmu
617 */
Jon Loeligeraacaf9b2005-09-17 10:36:54 -0500618static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619done_battery_state_ohare(struct adb_request* req)
620{
621 /* format:
622 * [0] : flags
623 * 0x01 : AC indicator
624 * 0x02 : charging
625 * 0x04 : battery exist
626 * 0x08 :
627 * 0x10 :
628 * 0x20 : full charged
629 * 0x40 : pcharge reset
630 * 0x80 : battery exist
631 *
632 * [1][2] : battery voltage
633 * [3] : CPU temperature
634 * [4] : battery temperature
635 * [5] : current
636 * [6][7] : pcharge
637 * --tkoba
638 */
639 unsigned int bat_flags = PMU_BATT_TYPE_HOOPER;
640 long pcharge, charge, vb, vmax, lmax;
641 long vmax_charging, vmax_charged;
642 long amperage, voltage, time, max;
643 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
644 NULL, PMAC_MB_INFO_MODEL, 0);
645
646 if (req->reply[0] & 0x01)
647 pmu_power_flags |= PMU_PWR_AC_PRESENT;
648 else
649 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
650
651 if (mb == PMAC_TYPE_COMET) {
652 vmax_charged = 189;
653 vmax_charging = 213;
654 lmax = 6500;
655 } else {
656 vmax_charged = 330;
657 vmax_charging = 330;
658 lmax = 6500;
659 }
660 vmax = vmax_charged;
661
662 /* If battery installed */
663 if (req->reply[0] & 0x04) {
664 bat_flags |= PMU_BATT_PRESENT;
665 if (req->reply[0] & 0x02)
666 bat_flags |= PMU_BATT_CHARGING;
667 vb = (req->reply[1] << 8) | req->reply[2];
668 voltage = (vb * 265 + 72665) / 10;
669 amperage = req->reply[5];
670 if ((req->reply[0] & 0x01) == 0) {
671 if (amperage > 200)
672 vb += ((amperage - 200) * 15)/100;
673 } else if (req->reply[0] & 0x02) {
674 vb = (vb * 97) / 100;
675 vmax = vmax_charging;
676 }
677 charge = (100 * vb) / vmax;
678 if (req->reply[0] & 0x40) {
679 pcharge = (req->reply[6] << 8) + req->reply[7];
680 if (pcharge > lmax)
681 pcharge = lmax;
682 pcharge *= 100;
683 pcharge = 100 - pcharge / lmax;
684 if (pcharge < charge)
685 charge = pcharge;
686 }
687 if (amperage > 0)
688 time = (charge * 16440) / amperage;
689 else
690 time = 0;
691 max = 100;
692 amperage = -amperage;
693 } else
694 charge = max = amperage = voltage = time = 0;
695
696 pmu_batteries[pmu_cur_battery].flags = bat_flags;
697 pmu_batteries[pmu_cur_battery].charge = charge;
698 pmu_batteries[pmu_cur_battery].max_charge = max;
699 pmu_batteries[pmu_cur_battery].amperage = amperage;
700 pmu_batteries[pmu_cur_battery].voltage = voltage;
701 pmu_batteries[pmu_cur_battery].time_remaining = time;
702
703 clear_bit(0, &async_req_locks);
704}
705
Jon Loeligeraacaf9b2005-09-17 10:36:54 -0500706static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707done_battery_state_smart(struct adb_request* req)
708{
709 /* format:
710 * [0] : format of this structure (known: 3,4,5)
711 * [1] : flags
712 *
713 * format 3 & 4:
714 *
715 * [2] : charge
716 * [3] : max charge
717 * [4] : current
718 * [5] : voltage
719 *
720 * format 5:
721 *
722 * [2][3] : charge
723 * [4][5] : max charge
724 * [6][7] : current
725 * [8][9] : voltage
726 */
727
728 unsigned int bat_flags = PMU_BATT_TYPE_SMART;
729 int amperage;
730 unsigned int capa, max, voltage;
731
732 if (req->reply[1] & 0x01)
733 pmu_power_flags |= PMU_PWR_AC_PRESENT;
734 else
735 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
736
737
738 capa = max = amperage = voltage = 0;
739
740 if (req->reply[1] & 0x04) {
741 bat_flags |= PMU_BATT_PRESENT;
742 switch(req->reply[0]) {
743 case 3:
744 case 4: capa = req->reply[2];
745 max = req->reply[3];
746 amperage = *((signed char *)&req->reply[4]);
747 voltage = req->reply[5];
748 break;
749 case 5: capa = (req->reply[2] << 8) | req->reply[3];
750 max = (req->reply[4] << 8) | req->reply[5];
751 amperage = *((signed short *)&req->reply[6]);
752 voltage = (req->reply[8] << 8) | req->reply[9];
753 break;
754 default:
Andy Shevchenkoebd004e2013-04-22 03:02:19 +0000755 pr_warn("pmu.c: unrecognized battery info, "
756 "len: %d, %4ph\n", req->reply_len,
757 req->reply);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 break;
759 }
760 }
761
762 if ((req->reply[1] & 0x01) && (amperage > 0))
763 bat_flags |= PMU_BATT_CHARGING;
764
765 pmu_batteries[pmu_cur_battery].flags = bat_flags;
766 pmu_batteries[pmu_cur_battery].charge = capa;
767 pmu_batteries[pmu_cur_battery].max_charge = max;
768 pmu_batteries[pmu_cur_battery].amperage = amperage;
769 pmu_batteries[pmu_cur_battery].voltage = voltage;
770 if (amperage) {
771 if ((req->reply[1] & 0x01) && (amperage > 0))
772 pmu_batteries[pmu_cur_battery].time_remaining
773 = ((max-capa) * 3600) / amperage;
774 else
775 pmu_batteries[pmu_cur_battery].time_remaining
776 = (capa * 3600) / (-amperage);
777 } else
778 pmu_batteries[pmu_cur_battery].time_remaining = 0;
779
780 pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
781
782 clear_bit(0, &async_req_locks);
783}
784
Jon Loeligeraacaf9b2005-09-17 10:36:54 -0500785static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786query_battery_state(void)
787{
788 if (test_and_set_bit(0, &async_req_locks))
789 return;
790 if (pmu_kind == PMU_OHARE_BASED)
791 pmu_request(&batt_req, done_battery_state_ohare,
792 1, PMU_BATTERY_STATE);
793 else
794 pmu_request(&batt_req, done_battery_state_smart,
795 2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
796}
797
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000798static int pmu_info_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799{
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000800 seq_printf(m, "PMU driver version : %d\n", PMU_DRIVER_VERSION);
801 seq_printf(m, "PMU firmware version : %02x\n", pmu_version);
802 seq_printf(m, "AC Power : %d\n",
Benjamin Herrenschmidt63e1fd42006-03-13 21:20:42 -0800803 ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0);
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000804 seq_printf(m, "Battery count : %d\n", pmu_battery_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000806 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807}
808
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000809static int pmu_info_proc_open(struct inode *inode, struct file *file)
810{
811 return single_open(file, pmu_info_proc_show, NULL);
812}
813
814static const struct file_operations pmu_info_proc_fops = {
815 .owner = THIS_MODULE,
816 .open = pmu_info_proc_open,
817 .read = seq_read,
818 .llseek = seq_lseek,
819 .release = single_release,
820};
821
822static int pmu_irqstats_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823{
824 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 static const char *irq_names[] = {
826 "Total CB1 triggered events",
827 "Total GPIO1 triggered events",
828 "PC-Card eject button",
829 "Sound/Brightness button",
830 "ADB message",
831 "Battery state change",
832 "Environment interrupt",
833 "Tick timer",
834 "Ghost interrupt (zero len)",
835 "Empty interrupt (empty mask)",
836 "Max irqs in a row"
837 };
838
839 for (i=0; i<11; i++) {
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000840 seq_printf(m, " %2u: %10u (%s)\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 i, pmu_irq_stats[i], irq_names[i]);
842 }
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000843 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844}
845
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000846static int pmu_irqstats_proc_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847{
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000848 return single_open(file, pmu_irqstats_proc_show, NULL);
849}
850
851static const struct file_operations pmu_irqstats_proc_fops = {
852 .owner = THIS_MODULE,
853 .open = pmu_irqstats_proc_open,
854 .read = seq_read,
855 .llseek = seq_lseek,
856 .release = single_release,
857};
858
859static int pmu_battery_proc_show(struct seq_file *m, void *v)
860{
861 long batnum = (long)m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000863 seq_putc(m, '\n');
864 seq_printf(m, "flags : %08x\n", pmu_batteries[batnum].flags);
865 seq_printf(m, "charge : %d\n", pmu_batteries[batnum].charge);
866 seq_printf(m, "max_charge : %d\n", pmu_batteries[batnum].max_charge);
867 seq_printf(m, "current : %d\n", pmu_batteries[batnum].amperage);
868 seq_printf(m, "voltage : %d\n", pmu_batteries[batnum].voltage);
869 seq_printf(m, "time rem. : %d\n", pmu_batteries[batnum].time_remaining);
870 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000873static int pmu_battery_proc_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874{
Al Virod9dda782013-03-31 18:16:14 -0400875 return single_open(file, pmu_battery_proc_show, PDE_DATA(inode));
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000876}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000878static const struct file_operations pmu_battery_proc_fops = {
879 .owner = THIS_MODULE,
880 .open = pmu_battery_proc_open,
881 .read = seq_read,
882 .llseek = seq_lseek,
883 .release = single_release,
884};
885
886static int pmu_options_proc_show(struct seq_file *m, void *v)
887{
Johannes Bergf91266e2007-12-12 01:25:59 +1100888#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889 if (pmu_kind == PMU_KEYLARGO_BASED &&
890 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000891 seq_printf(m, "lid_wakeup=%d\n", option_lid_wakeup);
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -0700892#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 if (pmu_kind == PMU_KEYLARGO_BASED)
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000894 seq_printf(m, "server_mode=%d\n", option_server_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000896 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897}
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000898
899static int pmu_options_proc_open(struct inode *inode, struct file *file)
900{
901 return single_open(file, pmu_options_proc_show, NULL);
902}
903
904static ssize_t pmu_options_proc_write(struct file *file,
905 const char __user *buffer, size_t count, loff_t *pos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906{
907 char tmp[33];
908 char *label, *val;
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000909 size_t fcount = count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910
911 if (!count)
912 return -EINVAL;
913 if (count > 32)
914 count = 32;
915 if (copy_from_user(tmp, buffer, count))
916 return -EFAULT;
917 tmp[count] = 0;
918
919 label = tmp;
920 while(*label == ' ')
921 label++;
922 val = label;
923 while(*val && (*val != '=')) {
924 if (*val == ' ')
925 *val = 0;
926 val++;
927 }
928 if ((*val) == 0)
929 return -EINVAL;
930 *(val++) = 0;
931 while(*val == ' ')
932 val++;
Johannes Bergf91266e2007-12-12 01:25:59 +1100933#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 if (pmu_kind == PMU_KEYLARGO_BASED &&
935 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
936 if (!strcmp(label, "lid_wakeup"))
937 option_lid_wakeup = ((*val) == '1');
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -0700938#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
940 int new_value;
941 new_value = ((*val) == '1');
942 if (new_value != option_server_mode)
943 pmu_set_server_mode(new_value);
944 }
945 return fcount;
946}
947
Alexey Dobriyan9d2f7342009-11-26 20:53:06 +0000948static const struct file_operations pmu_options_proc_fops = {
949 .owner = THIS_MODULE,
950 .open = pmu_options_proc_open,
951 .read = seq_read,
952 .llseek = seq_lseek,
953 .release = single_release,
954 .write = pmu_options_proc_write,
955};
956
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957#ifdef CONFIG_ADB
958/* Send an ADB command */
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +0000959static int pmu_send_request(struct adb_request *req, int sync)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960{
961 int i, ret;
962
963 if ((vias == NULL) || (!pmu_fully_inited)) {
964 req->complete = 1;
965 return -ENXIO;
966 }
967
968 ret = -EINVAL;
969
970 switch (req->data[0]) {
971 case PMU_PACKET:
972 for (i = 0; i < req->nbytes - 1; ++i)
973 req->data[i] = req->data[i+1];
974 --req->nbytes;
975 if (pmu_data_len[req->data[0]][1] != 0) {
976 req->reply[0] = ADB_RET_OK;
977 req->reply_len = 1;
978 } else
979 req->reply_len = 0;
980 ret = pmu_queue_request(req);
981 break;
982 case CUDA_PACKET:
983 switch (req->data[1]) {
984 case CUDA_GET_TIME:
985 if (req->nbytes != 2)
986 break;
987 req->data[0] = PMU_READ_RTC;
988 req->nbytes = 1;
989 req->reply_len = 3;
990 req->reply[0] = CUDA_PACKET;
991 req->reply[1] = 0;
992 req->reply[2] = CUDA_GET_TIME;
993 ret = pmu_queue_request(req);
994 break;
995 case CUDA_SET_TIME:
996 if (req->nbytes != 6)
997 break;
998 req->data[0] = PMU_SET_RTC;
999 req->nbytes = 5;
1000 for (i = 1; i <= 4; ++i)
1001 req->data[i] = req->data[i+1];
1002 req->reply_len = 3;
1003 req->reply[0] = CUDA_PACKET;
1004 req->reply[1] = 0;
1005 req->reply[2] = CUDA_SET_TIME;
1006 ret = pmu_queue_request(req);
1007 break;
1008 }
1009 break;
1010 case ADB_PACKET:
1011 if (!pmu_has_adb)
1012 return -ENXIO;
1013 for (i = req->nbytes - 1; i > 1; --i)
1014 req->data[i+2] = req->data[i];
1015 req->data[3] = req->nbytes - 2;
1016 req->data[2] = pmu_adb_flags;
1017 /*req->data[1] = req->data[1];*/
1018 req->data[0] = PMU_ADB_CMD;
1019 req->nbytes += 2;
1020 req->reply_expected = 1;
1021 req->reply_len = 0;
1022 ret = pmu_queue_request(req);
1023 break;
1024 }
1025 if (ret) {
1026 req->complete = 1;
1027 return ret;
1028 }
1029
1030 if (sync)
1031 while (!req->complete)
1032 pmu_poll();
1033
1034 return 0;
1035}
1036
1037/* Enable/disable autopolling */
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001038static int __pmu_adb_autopoll(int devs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039{
1040 struct adb_request req;
1041
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 if (devs) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043 pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
1044 adb_dev_map >> 8, adb_dev_map);
1045 pmu_adb_flags = 2;
1046 } else {
1047 pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
1048 pmu_adb_flags = 0;
1049 }
1050 while (!req.complete)
1051 pmu_poll();
1052 return 0;
1053}
1054
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001055static int pmu_adb_autopoll(int devs)
1056{
1057 if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1058 return -ENXIO;
1059
1060 adb_dev_map = devs;
1061 return __pmu_adb_autopoll(devs);
1062}
1063
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064/* Reset the ADB bus */
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001065static int pmu_adb_reset_bus(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066{
1067 struct adb_request req;
1068 int save_autopoll = adb_dev_map;
1069
1070 if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1071 return -ENXIO;
1072
1073 /* anyone got a better idea?? */
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001074 __pmu_adb_autopoll(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001076 req.nbytes = 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 req.done = NULL;
1078 req.data[0] = PMU_ADB_CMD;
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001079 req.data[1] = ADB_BUSRESET;
1080 req.data[2] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 req.data[3] = 0;
1082 req.data[4] = 0;
1083 req.reply_len = 0;
1084 req.reply_expected = 1;
1085 if (pmu_queue_request(&req) != 0) {
1086 printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
1087 return -EIO;
1088 }
1089 pmu_wait_complete(&req);
1090
1091 if (save_autopoll != 0)
Benjamin Herrenschmidt11a50872009-10-09 11:27:54 +00001092 __pmu_adb_autopoll(save_autopoll);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093
1094 return 0;
1095}
1096#endif /* CONFIG_ADB */
1097
1098/* Construct and send a pmu request */
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001099int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
1101 int nbytes, ...)
1102{
1103 va_list list;
1104 int i;
1105
1106 if (vias == NULL)
1107 return -ENXIO;
1108
1109 if (nbytes < 0 || nbytes > 32) {
1110 printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
1111 req->complete = 1;
1112 return -EINVAL;
1113 }
1114 req->nbytes = nbytes;
1115 req->done = done;
1116 va_start(list, nbytes);
1117 for (i = 0; i < nbytes; ++i)
1118 req->data[i] = va_arg(list, int);
1119 va_end(list);
1120 req->reply_len = 0;
1121 req->reply_expected = 0;
1122 return pmu_queue_request(req);
1123}
1124
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001125int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126pmu_queue_request(struct adb_request *req)
1127{
1128 unsigned long flags;
1129 int nsend;
1130
1131 if (via == NULL) {
1132 req->complete = 1;
1133 return -ENXIO;
1134 }
1135 if (req->nbytes <= 0) {
1136 req->complete = 1;
1137 return 0;
1138 }
1139 nsend = pmu_data_len[req->data[0]][0];
1140 if (nsend >= 0 && req->nbytes != nsend + 1) {
1141 req->complete = 1;
1142 return -EINVAL;
1143 }
1144
1145 req->next = NULL;
1146 req->sent = 0;
1147 req->complete = 0;
1148
1149 spin_lock_irqsave(&pmu_lock, flags);
1150 if (current_req != 0) {
1151 last_req->next = req;
1152 last_req = req;
1153 } else {
1154 current_req = req;
1155 last_req = req;
1156 if (pmu_state == idle)
1157 pmu_start();
1158 }
1159 spin_unlock_irqrestore(&pmu_lock, flags);
1160
1161 return 0;
1162}
1163
1164static inline void
1165wait_for_ack(void)
1166{
1167 /* Sightly increased the delay, I had one occurrence of the message
1168 * reported
1169 */
1170 int timeout = 4000;
1171 while ((in_8(&via[B]) & TACK) == 0) {
1172 if (--timeout < 0) {
1173 printk(KERN_ERR "PMU not responding (!ack)\n");
1174 return;
1175 }
1176 udelay(10);
1177 }
1178}
1179
1180/* New PMU seems to be very sensitive to those timings, so we make sure
1181 * PCI is flushed immediately */
1182static inline void
1183send_byte(int x)
1184{
1185 volatile unsigned char __iomem *v = via;
1186
1187 out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
1188 out_8(&v[SR], x);
1189 out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */
1190 (void)in_8(&v[B]);
1191}
1192
1193static inline void
1194recv_byte(void)
1195{
1196 volatile unsigned char __iomem *v = via;
1197
1198 out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
1199 in_8(&v[SR]); /* resets SR */
1200 out_8(&v[B], in_8(&v[B]) & ~TREQ);
1201 (void)in_8(&v[B]);
1202}
1203
1204static inline void
1205pmu_done(struct adb_request *req)
1206{
1207 void (*done)(struct adb_request *) = req->done;
1208 mb();
1209 req->complete = 1;
1210 /* Here, we assume that if the request has a done member, the
1211 * struct request will survive to setting req->complete to 1
1212 */
1213 if (done)
1214 (*done)(req);
1215}
1216
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001217static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218pmu_start(void)
1219{
1220 struct adb_request *req;
1221
1222 /* assert pmu_state == idle */
1223 /* get the packet to send */
1224 req = current_req;
1225 if (req == 0 || pmu_state != idle
1226 || (/*req->reply_expected && */req_awaiting_reply))
1227 return;
1228
1229 pmu_state = sending;
1230 data_index = 1;
1231 data_len = pmu_data_len[req->data[0]][0];
1232
1233 /* Sounds safer to make sure ACK is high before writing. This helped
1234 * kill a problem with ADB and some iBooks
1235 */
1236 wait_for_ack();
1237 /* set the shift register to shift out and send a byte */
1238 send_byte(req->data[0]);
1239}
1240
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001241void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242pmu_poll(void)
1243{
1244 if (!via)
1245 return;
1246 if (disable_poll)
1247 return;
David Howells7d12e782006-10-05 14:55:46 +01001248 via_pmu_interrupt(0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249}
1250
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001251void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252pmu_poll_adb(void)
1253{
1254 if (!via)
1255 return;
1256 if (disable_poll)
1257 return;
1258 /* Kicks ADB read when PMU is suspended */
1259 adb_int_pending = 1;
1260 do {
David Howells7d12e782006-10-05 14:55:46 +01001261 via_pmu_interrupt(0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262 } while (pmu_suspended && (adb_int_pending || pmu_state != idle
1263 || req_awaiting_reply));
1264}
1265
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001266void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267pmu_wait_complete(struct adb_request *req)
1268{
1269 if (!via)
1270 return;
1271 while((pmu_state != idle && pmu_state != locked) || !req->complete)
David Howells7d12e782006-10-05 14:55:46 +01001272 via_pmu_interrupt(0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273}
1274
1275/* This function loops until the PMU is idle and prevents it from
1276 * anwsering to ADB interrupts. pmu_request can still be called.
1277 * This is done to avoid spurrious shutdowns when we know we'll have
1278 * interrupts switched off for a long time
1279 */
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001280void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281pmu_suspend(void)
1282{
1283 unsigned long flags;
Johannes Berg1b0e9d42007-11-14 06:08:32 +11001284
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 if (!via)
1286 return;
1287
1288 spin_lock_irqsave(&pmu_lock, flags);
1289 pmu_suspended++;
1290 if (pmu_suspended > 1) {
1291 spin_unlock_irqrestore(&pmu_lock, flags);
1292 return;
1293 }
1294
1295 do {
1296 spin_unlock_irqrestore(&pmu_lock, flags);
1297 if (req_awaiting_reply)
1298 adb_int_pending = 1;
David Howells7d12e782006-10-05 14:55:46 +01001299 via_pmu_interrupt(0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300 spin_lock_irqsave(&pmu_lock, flags);
1301 if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302 if (gpio_irq >= 0)
1303 disable_irq_nosync(gpio_irq);
1304 out_8(&via[IER], CB1_INT | IER_CLR);
1305 spin_unlock_irqrestore(&pmu_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306 break;
1307 }
1308 } while (1);
1309}
1310
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001311void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312pmu_resume(void)
1313{
1314 unsigned long flags;
1315
1316 if (!via || (pmu_suspended < 1))
1317 return;
1318
1319 spin_lock_irqsave(&pmu_lock, flags);
1320 pmu_suspended--;
1321 if (pmu_suspended > 0) {
1322 spin_unlock_irqrestore(&pmu_lock, flags);
1323 return;
1324 }
1325 adb_int_pending = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 if (gpio_irq >= 0)
1327 enable_irq(gpio_irq);
1328 out_8(&via[IER], CB1_INT | IER_SET);
1329 spin_unlock_irqrestore(&pmu_lock, flags);
1330 pmu_poll();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331}
1332
1333/* Interrupt data could be the result data from an ADB cmd */
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001334static void
David Howells7d12e782006-10-05 14:55:46 +01001335pmu_handle_data(unsigned char *data, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336{
1337 unsigned char ints, pirq;
1338 int i = 0;
1339
1340 asleep = 0;
1341 if (drop_interrupts || len < 1) {
1342 adb_int_pending = 0;
1343 pmu_irq_stats[8]++;
1344 return;
1345 }
1346
1347 /* Get PMU interrupt mask */
1348 ints = data[0];
1349
1350 /* Record zero interrupts for stats */
1351 if (ints == 0)
1352 pmu_irq_stats[9]++;
1353
1354 /* Hack to deal with ADB autopoll flag */
1355 if (ints & PMU_INT_ADB)
1356 ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
1357
1358next:
1359
1360 if (ints == 0) {
1361 if (i > pmu_irq_stats[10])
1362 pmu_irq_stats[10] = i;
1363 return;
1364 }
1365
1366 for (pirq = 0; pirq < 8; pirq++)
1367 if (ints & (1 << pirq))
1368 break;
1369 pmu_irq_stats[pirq]++;
1370 i++;
1371 ints &= ~(1 << pirq);
1372
1373 /* Note: for some reason, we get an interrupt with len=1,
1374 * data[0]==0 after each normal ADB interrupt, at least
1375 * on the Pismo. Still investigating... --BenH
1376 */
1377 if ((1 << pirq) & PMU_INT_ADB) {
1378 if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
1379 struct adb_request *req = req_awaiting_reply;
1380 if (req == 0) {
1381 printk(KERN_ERR "PMU: extra ADB reply\n");
1382 return;
1383 }
1384 req_awaiting_reply = NULL;
1385 if (len <= 2)
1386 req->reply_len = 0;
1387 else {
1388 memcpy(req->reply, data + 1, len - 1);
1389 req->reply_len = len - 1;
1390 }
1391 pmu_done(req);
1392 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 if (len == 4 && data[1] == 0x2c) {
1394 extern int xmon_wants_key, xmon_adb_keycode;
1395 if (xmon_wants_key) {
1396 xmon_adb_keycode = data[2];
1397 return;
1398 }
1399 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400#ifdef CONFIG_ADB
1401 /*
1402 * XXX On the [23]400 the PMU gives us an up
1403 * event for keycodes 0x74 or 0x75 when the PC
1404 * card eject buttons are released, so we
1405 * ignore those events.
1406 */
1407 if (!(pmu_kind == PMU_OHARE_BASED && len == 4
1408 && data[1] == 0x2c && data[3] == 0xff
1409 && (data[2] & ~1) == 0xf4))
David Howells7d12e782006-10-05 14:55:46 +01001410 adb_input(data+1, len-1, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411#endif /* CONFIG_ADB */
1412 }
1413 }
1414 /* Sound/brightness button pressed */
1415 else if ((1 << pirq) & PMU_INT_SNDBRT) {
1416#ifdef CONFIG_PMAC_BACKLIGHT
1417 if (len == 3)
Michael Hanselmann4b755992006-07-30 03:04:19 -07001418 pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4);
1419#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001420 }
1421 /* Tick interrupt */
1422 else if ((1 << pirq) & PMU_INT_TICK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 /* Environement or tick interrupt, query batteries */
1424 if (pmu_battery_count) {
1425 if ((--query_batt_timer) == 0) {
1426 query_battery_state();
1427 query_batt_timer = BATTERY_POLLING_COUNT;
1428 }
1429 }
1430 }
1431 else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
1432 if (pmu_battery_count)
1433 query_battery_state();
1434 pmu_pass_intr(data, len);
Johannes Berg9e8e30a2006-06-26 01:49:55 -04001435 /* len == 6 is probably a bad check. But how do I
1436 * know what PMU versions send what events here? */
1437 if (len == 6) {
1438 via_pmu_event(PMU_EVT_POWER, !!(data[1]&8));
1439 via_pmu_event(PMU_EVT_LID, data[1]&1);
1440 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441 } else {
1442 pmu_pass_intr(data, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 }
1444 goto next;
1445}
1446
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001447static struct adb_request*
David Howells7d12e782006-10-05 14:55:46 +01001448pmu_sr_intr(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449{
1450 struct adb_request *req;
1451 int bite = 0;
1452
1453 if (via[B] & TREQ) {
1454 printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
1455 out_8(&via[IFR], SR_INT);
1456 return NULL;
1457 }
1458 /* The ack may not yet be low when we get the interrupt */
1459 while ((in_8(&via[B]) & TACK) != 0)
1460 ;
1461
1462 /* if reading grab the byte, and reset the interrupt */
1463 if (pmu_state == reading || pmu_state == reading_intr)
1464 bite = in_8(&via[SR]);
1465
1466 /* reset TREQ and wait for TACK to go high */
1467 out_8(&via[B], in_8(&via[B]) | TREQ);
1468 wait_for_ack();
1469
1470 switch (pmu_state) {
1471 case sending:
1472 req = current_req;
1473 if (data_len < 0) {
1474 data_len = req->nbytes - 1;
1475 send_byte(data_len);
1476 break;
1477 }
1478 if (data_index <= data_len) {
1479 send_byte(req->data[data_index++]);
1480 break;
1481 }
1482 req->sent = 1;
1483 data_len = pmu_data_len[req->data[0]][1];
1484 if (data_len == 0) {
1485 pmu_state = idle;
1486 current_req = req->next;
1487 if (req->reply_expected)
1488 req_awaiting_reply = req;
1489 else
1490 return req;
1491 } else {
1492 pmu_state = reading;
1493 data_index = 0;
1494 reply_ptr = req->reply + req->reply_len;
1495 recv_byte();
1496 }
1497 break;
1498
1499 case intack:
1500 data_index = 0;
1501 data_len = -1;
1502 pmu_state = reading_intr;
1503 reply_ptr = interrupt_data[int_data_last];
1504 recv_byte();
1505 if (gpio_irq >= 0 && !gpio_irq_enabled) {
1506 enable_irq(gpio_irq);
1507 gpio_irq_enabled = 1;
1508 }
1509 break;
1510
1511 case reading:
1512 case reading_intr:
1513 if (data_len == -1) {
1514 data_len = bite;
1515 if (bite > 32)
1516 printk(KERN_ERR "PMU: bad reply len %d\n", bite);
1517 } else if (data_index < 32) {
1518 reply_ptr[data_index++] = bite;
1519 }
1520 if (data_index < data_len) {
1521 recv_byte();
1522 break;
1523 }
1524
1525 if (pmu_state == reading_intr) {
1526 pmu_state = idle;
1527 int_data_state[int_data_last] = int_data_ready;
1528 interrupt_data_len[int_data_last] = data_len;
1529 } else {
1530 req = current_req;
1531 /*
1532 * For PMU sleep and freq change requests, we lock the
Jean Delvarec03983a2007-10-19 23:22:55 +02001533 * PMU until it's explicitly unlocked. This avoids any
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534 * spurrious event polling getting in
1535 */
1536 current_req = req->next;
1537 req->reply_len += data_index;
1538 if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED)
1539 pmu_state = locked;
1540 else
1541 pmu_state = idle;
1542 return req;
1543 }
1544 break;
1545
1546 default:
1547 printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n",
1548 pmu_state);
1549 }
1550 return NULL;
1551}
1552
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001553static irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +01001554via_pmu_interrupt(int irq, void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555{
1556 unsigned long flags;
1557 int intr;
1558 int nloop = 0;
1559 int int_data = -1;
1560 struct adb_request *req = NULL;
1561 int handled = 0;
1562
1563 /* This is a bit brutal, we can probably do better */
1564 spin_lock_irqsave(&pmu_lock, flags);
1565 ++disable_poll;
1566
1567 for (;;) {
1568 intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
1569 if (intr == 0)
1570 break;
1571 handled = 1;
1572 if (++nloop > 1000) {
1573 printk(KERN_DEBUG "PMU: stuck in intr loop, "
1574 "intr=%x, ier=%x pmu_state=%d\n",
1575 intr, in_8(&via[IER]), pmu_state);
1576 break;
1577 }
1578 out_8(&via[IFR], intr);
1579 if (intr & CB1_INT) {
1580 adb_int_pending = 1;
1581 pmu_irq_stats[0]++;
1582 }
1583 if (intr & SR_INT) {
David Howells7d12e782006-10-05 14:55:46 +01001584 req = pmu_sr_intr();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585 if (req)
1586 break;
1587 }
1588 }
1589
1590recheck:
1591 if (pmu_state == idle) {
1592 if (adb_int_pending) {
1593 if (int_data_state[0] == int_data_empty)
1594 int_data_last = 0;
1595 else if (int_data_state[1] == int_data_empty)
1596 int_data_last = 1;
1597 else
1598 goto no_free_slot;
1599 pmu_state = intack;
1600 int_data_state[int_data_last] = int_data_fill;
1601 /* Sounds safer to make sure ACK is high before writing.
1602 * This helped kill a problem with ADB and some iBooks
1603 */
1604 wait_for_ack();
1605 send_byte(PMU_INT_ACK);
1606 adb_int_pending = 0;
1607 } else if (current_req)
1608 pmu_start();
1609 }
1610no_free_slot:
1611 /* Mark the oldest buffer for flushing */
1612 if (int_data_state[!int_data_last] == int_data_ready) {
1613 int_data_state[!int_data_last] = int_data_flush;
1614 int_data = !int_data_last;
1615 } else if (int_data_state[int_data_last] == int_data_ready) {
1616 int_data_state[int_data_last] = int_data_flush;
1617 int_data = int_data_last;
1618 }
1619 --disable_poll;
1620 spin_unlock_irqrestore(&pmu_lock, flags);
1621
1622 /* Deal with completed PMU requests outside of the lock */
1623 if (req) {
1624 pmu_done(req);
1625 req = NULL;
1626 }
1627
1628 /* Deal with interrupt datas outside of the lock */
1629 if (int_data >= 0) {
David Howells7d12e782006-10-05 14:55:46 +01001630 pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001631 spin_lock_irqsave(&pmu_lock, flags);
1632 ++disable_poll;
1633 int_data_state[int_data] = int_data_empty;
1634 int_data = -1;
1635 goto recheck;
1636 }
1637
1638 return IRQ_RETVAL(handled);
1639}
1640
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001641void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642pmu_unlock(void)
1643{
1644 unsigned long flags;
1645
1646 spin_lock_irqsave(&pmu_lock, flags);
1647 if (pmu_state == locked)
1648 pmu_state = idle;
1649 adb_int_pending = 1;
1650 spin_unlock_irqrestore(&pmu_lock, flags);
1651}
1652
1653
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001654static irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +01001655gpio1_interrupt(int irq, void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001656{
1657 unsigned long flags;
1658
1659 if ((in_8(gpio_reg + 0x9) & 0x02) == 0) {
1660 spin_lock_irqsave(&pmu_lock, flags);
1661 if (gpio_irq_enabled > 0) {
1662 disable_irq_nosync(gpio_irq);
1663 gpio_irq_enabled = 0;
1664 }
1665 pmu_irq_stats[1]++;
1666 adb_int_pending = 1;
1667 spin_unlock_irqrestore(&pmu_lock, flags);
David Howells7d12e782006-10-05 14:55:46 +01001668 via_pmu_interrupt(0, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001669 return IRQ_HANDLED;
1670 }
1671 return IRQ_NONE;
1672}
1673
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001674void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675pmu_enable_irled(int on)
1676{
1677 struct adb_request req;
1678
1679 if (vias == NULL)
1680 return ;
1681 if (pmu_kind == PMU_KEYLARGO_BASED)
1682 return ;
1683
1684 pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
1685 (on ? PMU_POW_ON : PMU_POW_OFF));
1686 pmu_wait_complete(&req);
1687}
1688
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001689void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690pmu_restart(void)
1691{
1692 struct adb_request req;
1693
1694 if (via == NULL)
1695 return;
1696
1697 local_irq_disable();
1698
1699 drop_interrupts = 1;
1700
1701 if (pmu_kind != PMU_KEYLARGO_BASED) {
1702 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1703 PMU_INT_TICK );
1704 while(!req.complete)
1705 pmu_poll();
1706 }
1707
1708 pmu_request(&req, NULL, 1, PMU_RESET);
1709 pmu_wait_complete(&req);
1710 for (;;)
1711 ;
1712}
1713
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001714void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715pmu_shutdown(void)
1716{
1717 struct adb_request req;
1718
1719 if (via == NULL)
1720 return;
1721
1722 local_irq_disable();
1723
1724 drop_interrupts = 1;
1725
1726 if (pmu_kind != PMU_KEYLARGO_BASED) {
1727 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1728 PMU_INT_TICK );
1729 pmu_wait_complete(&req);
1730 } else {
1731 /* Disable server mode on shutdown or we'll just
1732 * wake up again
1733 */
1734 pmu_set_server_mode(0);
1735 }
1736
1737 pmu_request(&req, NULL, 5, PMU_SHUTDOWN,
1738 'M', 'A', 'T', 'T');
1739 pmu_wait_complete(&req);
1740 for (;;)
1741 ;
1742}
1743
1744int
1745pmu_present(void)
1746{
1747 return via != 0;
1748}
1749
Johannes Bergf91266e2007-12-12 01:25:59 +11001750#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751/*
1752 * Put the powerbook to sleep.
1753 */
1754
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001755static u32 save_via[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001757static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758save_via_state(void)
1759{
1760 save_via[0] = in_8(&via[ANH]);
1761 save_via[1] = in_8(&via[DIRA]);
1762 save_via[2] = in_8(&via[B]);
1763 save_via[3] = in_8(&via[DIRB]);
1764 save_via[4] = in_8(&via[PCR]);
1765 save_via[5] = in_8(&via[ACR]);
1766 save_via[6] = in_8(&via[T1CL]);
1767 save_via[7] = in_8(&via[T1CH]);
1768}
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001769static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770restore_via_state(void)
1771{
1772 out_8(&via[ANH], save_via[0]);
1773 out_8(&via[DIRA], save_via[1]);
1774 out_8(&via[B], save_via[2]);
1775 out_8(&via[DIRB], save_via[3]);
1776 out_8(&via[PCR], save_via[4]);
1777 out_8(&via[ACR], save_via[5]);
1778 out_8(&via[T1CL], save_via[6]);
1779 out_8(&via[T1CH], save_via[7]);
1780 out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
1781 out_8(&via[IFR], 0x7f); /* clear IFR */
1782 out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
1783}
1784
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785#define GRACKLE_PM (1<<7)
1786#define GRACKLE_DOZE (1<<5)
1787#define GRACKLE_NAP (1<<4)
1788#define GRACKLE_SLEEP (1<<3)
1789
Olaf Hering3bea6312006-03-21 23:00:05 -08001790static int powerbook_sleep_grackle(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001791{
1792 unsigned long save_l2cr;
1793 unsigned short pmcr1;
1794 struct adb_request req;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 struct pci_dev *grackle;
1796
Alan Coxc78f8302007-04-23 14:56:01 +01001797 grackle = pci_get_bus_and_slot(0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798 if (!grackle)
1799 return -ENODEV;
1800
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801 /* Turn off various things. Darwin does some retry tests here... */
1802 pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE);
1803 pmu_wait_complete(&req);
1804 pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
1805 PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY);
1806 pmu_wait_complete(&req);
1807
1808 /* For 750, save backside cache setting and disable it */
1809 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
1810
1811 if (!__fake_sleep) {
1812 /* Ask the PMU to put us to sleep */
1813 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
1814 pmu_wait_complete(&req);
1815 }
1816
1817 /* The VIA is supposed not to be restored correctly*/
1818 save_via_state();
1819 /* We shut down some HW */
1820 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
1821
1822 pci_read_config_word(grackle, 0x70, &pmcr1);
1823 /* Apparently, MacOS uses NAP mode for Grackle ??? */
1824 pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP);
1825 pmcr1 |= GRACKLE_PM|GRACKLE_NAP;
1826 pci_write_config_word(grackle, 0x70, pmcr1);
1827
1828 /* Call low-level ASM sleep handler */
1829 if (__fake_sleep)
1830 mdelay(5000);
1831 else
1832 low_sleep_handler();
1833
1834 /* We're awake again, stop grackle PM */
1835 pci_read_config_word(grackle, 0x70, &pmcr1);
1836 pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP);
1837 pci_write_config_word(grackle, 0x70, pmcr1);
1838
Alan Coxc78f8302007-04-23 14:56:01 +01001839 pci_dev_put(grackle);
1840
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 /* Make sure the PMU is idle */
1842 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
1843 restore_via_state();
1844
1845 /* Restore L2 cache */
1846 if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
1847 _set_L2CR(save_l2cr);
1848
1849 /* Restore userland MMU context */
Benjamin Herrenschmidt5e696612008-12-18 19:13:24 +00001850 switch_mmu_context(NULL, current->active_mm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851
1852 /* Power things up */
1853 pmu_unlock();
1854 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
1855 pmu_wait_complete(&req);
1856 pmu_request(&req, NULL, 2, PMU_POWER_CTRL0,
1857 PMU_POW0_ON|PMU_POW0_HARD_DRIVE);
1858 pmu_wait_complete(&req);
1859 pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
1860 PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY);
1861 pmu_wait_complete(&req);
1862
Linus Torvalds1da177e2005-04-16 15:20:36 -07001863 return 0;
1864}
1865
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05001866static int
Linus Torvalds1da177e2005-04-16 15:20:36 -07001867powerbook_sleep_Core99(void)
1868{
1869 unsigned long save_l2cr;
1870 unsigned long save_l3cr;
1871 struct adb_request req;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872
1873 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) {
1874 printk(KERN_ERR "Sleep mode not supported on this machine\n");
1875 return -ENOSYS;
1876 }
1877
1878 if (num_online_cpus() > 1 || cpu_is_offline(0))
1879 return -EAGAIN;
1880
Benjamin Herrenschmidtb16eeb42005-05-27 12:53:02 -07001881 /* Stop environment and ADB interrupts */
1882 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
1883 pmu_wait_complete(&req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884
1885 /* Tell PMU what events will wake us up */
1886 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS,
1887 0xff, 0xff);
1888 pmu_wait_complete(&req);
1889 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS,
1890 0, PMU_PWR_WAKEUP_KEY |
1891 (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0));
1892 pmu_wait_complete(&req);
1893
1894 /* Save the state of the L2 and L3 caches */
1895 save_l3cr = _get_L3CR(); /* (returns -1 if not available) */
1896 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
1897
1898 if (!__fake_sleep) {
1899 /* Ask the PMU to put us to sleep */
1900 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
1901 pmu_wait_complete(&req);
1902 }
1903
1904 /* The VIA is supposed not to be restored correctly*/
1905 save_via_state();
1906
1907 /* Shut down various ASICs. There's a chance that we can no longer
1908 * talk to the PMU after this, so I moved it to _after_ sending the
1909 * sleep command to it. Still need to be checked.
1910 */
1911 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
1912
1913 /* Call low-level ASM sleep handler */
1914 if (__fake_sleep)
1915 mdelay(5000);
1916 else
1917 low_sleep_handler();
1918
1919 /* Restore Apple core ASICs state */
1920 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
1921
1922 /* Restore VIA */
1923 restore_via_state();
1924
Benjamin Herrenschmidt0086b5e2005-06-10 14:19:02 +10001925 /* tweak LPJ before cpufreq is there */
1926 loops_per_jiffy *= 2;
1927
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928 /* Restore video */
1929 pmac_call_early_video_resume();
1930
1931 /* Restore L2 cache */
1932 if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
1933 _set_L2CR(save_l2cr);
1934 /* Restore L3 cache */
1935 if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0)
1936 _set_L3CR(save_l3cr);
1937
1938 /* Restore userland MMU context */
Benjamin Herrenschmidt5e696612008-12-18 19:13:24 +00001939 switch_mmu_context(NULL, current->active_mm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940
1941 /* Tell PMU we are ready */
1942 pmu_unlock();
1943 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
1944 pmu_wait_complete(&req);
1945 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
1946 pmu_wait_complete(&req);
1947
Benjamin Herrenschmidt0086b5e2005-06-10 14:19:02 +10001948 /* Restore LPJ, cpufreq will adjust the cpu frequency */
1949 loops_per_jiffy /= 2;
1950
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951 return 0;
1952}
1953
1954#define PB3400_MEM_CTRL 0xf8000000
1955#define PB3400_MEM_CTRL_SLEEP 0x70
1956
Paul Mackerras887ef352007-12-19 22:45:31 +11001957static void __iomem *pb3400_mem_ctrl;
1958
1959static void powerbook_sleep_init_3400(void)
1960{
1961 /* map in the memory controller registers */
1962 pb3400_mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
1963 if (pb3400_mem_ctrl == NULL)
1964 printk(KERN_WARNING "ioremap failed: sleep won't be possible");
1965}
1966
1967static int powerbook_sleep_3400(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001968{
Johannes Bergf91266e2007-12-12 01:25:59 +11001969 int i, x;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 unsigned int hid0;
Paul Mackerras887ef352007-12-19 22:45:31 +11001971 unsigned long msr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 struct adb_request sleep_req;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 unsigned int __iomem *mem_ctrl_sleep;
1974
Paul Mackerras887ef352007-12-19 22:45:31 +11001975 if (pb3400_mem_ctrl == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001976 return -ENOMEM;
Paul Mackerras887ef352007-12-19 22:45:31 +11001977 mem_ctrl_sleep = pb3400_mem_ctrl + PB3400_MEM_CTRL_SLEEP;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979 /* Set the memory controller to keep the memory refreshed
1980 while we're asleep */
1981 for (i = 0x403f; i >= 0x4000; --i) {
1982 out_be32(mem_ctrl_sleep, i);
1983 do {
1984 x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff;
1985 } while (x == 0);
1986 if (x >= 0x100)
1987 break;
1988 }
1989
1990 /* Ask the PMU to put us to sleep */
1991 pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
Paul Mackerras887ef352007-12-19 22:45:31 +11001992 pmu_wait_complete(&sleep_req);
1993 pmu_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994
Paul Mackerras887ef352007-12-19 22:45:31 +11001995 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001996
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997 asleep = 1;
1998
1999 /* Put the CPU into sleep mode */
Benjamin Herrenschmidt21fe3302005-11-07 16:41:59 +11002000 hid0 = mfspr(SPRN_HID0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002001 hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
Benjamin Herrenschmidt21fe3302005-11-07 16:41:59 +11002002 mtspr(SPRN_HID0, hid0);
Paul Mackerras887ef352007-12-19 22:45:31 +11002003 local_irq_enable();
2004 msr = mfmsr() | MSR_POW;
2005 while (asleep) {
2006 mb();
2007 mtmsr(msr);
2008 isync();
2009 }
2010 local_irq_disable();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002011
2012 /* OK, we're awake again, start restoring things */
2013 out_be32(mem_ctrl_sleep, 0x3f);
Paul Mackerras887ef352007-12-19 22:45:31 +11002014 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002015
Linus Torvalds1da177e2005-04-16 15:20:36 -07002016 return 0;
2017}
2018
Johannes Bergf91266e2007-12-12 01:25:59 +11002019#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002020
Linus Torvalds1da177e2005-04-16 15:20:36 -07002021/*
2022 * Support for /dev/pmu device
2023 */
2024#define RB_SIZE 0x10
2025struct pmu_private {
2026 struct list_head list;
2027 int rb_get;
2028 int rb_put;
2029 struct rb_entry {
2030 unsigned short len;
2031 unsigned char data[16];
2032 } rb_buf[RB_SIZE];
2033 wait_queue_head_t wait;
2034 spinlock_t lock;
2035#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2036 int backlight_locker;
Michael Hanselmann4b755992006-07-30 03:04:19 -07002037#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038};
2039
2040static LIST_HEAD(all_pmu_pvt);
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002041static DEFINE_SPINLOCK(all_pvt_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002043static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044pmu_pass_intr(unsigned char *data, int len)
2045{
2046 struct pmu_private *pp;
2047 struct list_head *list;
2048 int i;
2049 unsigned long flags;
2050
2051 if (len > sizeof(pp->rb_buf[0].data))
2052 len = sizeof(pp->rb_buf[0].data);
2053 spin_lock_irqsave(&all_pvt_lock, flags);
2054 for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) {
2055 pp = list_entry(list, struct pmu_private, list);
2056 spin_lock(&pp->lock);
2057 i = pp->rb_put + 1;
2058 if (i >= RB_SIZE)
2059 i = 0;
2060 if (i != pp->rb_get) {
2061 struct rb_entry *rp = &pp->rb_buf[pp->rb_put];
2062 rp->len = len;
2063 memcpy(rp->data, data, len);
2064 pp->rb_put = i;
2065 wake_up_interruptible(&pp->wait);
2066 }
2067 spin_unlock(&pp->lock);
2068 }
2069 spin_unlock_irqrestore(&all_pvt_lock, flags);
2070}
2071
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002072static int
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073pmu_open(struct inode *inode, struct file *file)
2074{
2075 struct pmu_private *pp;
2076 unsigned long flags;
2077
2078 pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
2079 if (pp == 0)
2080 return -ENOMEM;
2081 pp->rb_get = pp->rb_put = 0;
2082 spin_lock_init(&pp->lock);
2083 init_waitqueue_head(&pp->wait);
Arnd Bergmannd851b6e2010-06-02 14:28:52 +02002084 mutex_lock(&pmu_info_proc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 spin_lock_irqsave(&all_pvt_lock, flags);
2086#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2087 pp->backlight_locker = 0;
Michael Hanselmann4b755992006-07-30 03:04:19 -07002088#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 list_add(&pp->list, &all_pmu_pvt);
2090 spin_unlock_irqrestore(&all_pvt_lock, flags);
2091 file->private_data = pp;
Arnd Bergmannd851b6e2010-06-02 14:28:52 +02002092 mutex_unlock(&pmu_info_proc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093 return 0;
2094}
2095
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002096static ssize_t
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097pmu_read(struct file *file, char __user *buf,
2098 size_t count, loff_t *ppos)
2099{
2100 struct pmu_private *pp = file->private_data;
2101 DECLARE_WAITQUEUE(wait, current);
2102 unsigned long flags;
2103 int ret = 0;
2104
2105 if (count < 1 || pp == 0)
2106 return -EINVAL;
2107 if (!access_ok(VERIFY_WRITE, buf, count))
2108 return -EFAULT;
2109
2110 spin_lock_irqsave(&pp->lock, flags);
2111 add_wait_queue(&pp->wait, &wait);
2112 current->state = TASK_INTERRUPTIBLE;
2113
2114 for (;;) {
2115 ret = -EAGAIN;
2116 if (pp->rb_get != pp->rb_put) {
2117 int i = pp->rb_get;
2118 struct rb_entry *rp = &pp->rb_buf[i];
2119 ret = rp->len;
2120 spin_unlock_irqrestore(&pp->lock, flags);
2121 if (ret > count)
2122 ret = count;
2123 if (ret > 0 && copy_to_user(buf, rp->data, ret))
2124 ret = -EFAULT;
2125 if (++i >= RB_SIZE)
2126 i = 0;
2127 spin_lock_irqsave(&pp->lock, flags);
2128 pp->rb_get = i;
2129 }
2130 if (ret >= 0)
2131 break;
2132 if (file->f_flags & O_NONBLOCK)
2133 break;
2134 ret = -ERESTARTSYS;
2135 if (signal_pending(current))
2136 break;
2137 spin_unlock_irqrestore(&pp->lock, flags);
2138 schedule();
2139 spin_lock_irqsave(&pp->lock, flags);
2140 }
2141 current->state = TASK_RUNNING;
2142 remove_wait_queue(&pp->wait, &wait);
2143 spin_unlock_irqrestore(&pp->lock, flags);
2144
2145 return ret;
2146}
2147
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002148static ssize_t
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149pmu_write(struct file *file, const char __user *buf,
2150 size_t count, loff_t *ppos)
2151{
2152 return 0;
2153}
2154
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002155static unsigned int
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156pmu_fpoll(struct file *filp, poll_table *wait)
2157{
2158 struct pmu_private *pp = filp->private_data;
2159 unsigned int mask = 0;
2160 unsigned long flags;
2161
2162 if (pp == 0)
2163 return 0;
2164 poll_wait(filp, &pp->wait, wait);
2165 spin_lock_irqsave(&pp->lock, flags);
2166 if (pp->rb_get != pp->rb_put)
2167 mask |= POLLIN;
2168 spin_unlock_irqrestore(&pp->lock, flags);
2169 return mask;
2170}
2171
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002172static int
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173pmu_release(struct inode *inode, struct file *file)
2174{
2175 struct pmu_private *pp = file->private_data;
2176 unsigned long flags;
2177
Linus Torvalds1da177e2005-04-16 15:20:36 -07002178 if (pp != 0) {
2179 file->private_data = NULL;
2180 spin_lock_irqsave(&all_pvt_lock, flags);
2181 list_del(&pp->list);
2182 spin_unlock_irqrestore(&all_pvt_lock, flags);
Michael Hanselmann4b755992006-07-30 03:04:19 -07002183
Linus Torvalds1da177e2005-04-16 15:20:36 -07002184#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
Michael Hanselmann4b755992006-07-30 03:04:19 -07002185 if (pp->backlight_locker)
2186 pmac_backlight_enable();
2187#endif
2188
Linus Torvalds1da177e2005-04-16 15:20:36 -07002189 kfree(pp);
2190 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002191 return 0;
2192}
2193
Johannes Bergf91266e2007-12-12 01:25:59 +11002194#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
Scott Wood7ac5dde2007-12-13 04:35:19 +11002195static void pmac_suspend_disable_irqs(void)
Johannes Bergf91266e2007-12-12 01:25:59 +11002196{
Johannes Bergf91266e2007-12-12 01:25:59 +11002197 /* Call platform functions marked "on sleep" */
2198 pmac_pfunc_i2c_suspend();
2199 pmac_pfunc_base_suspend();
Johannes Bergf91266e2007-12-12 01:25:59 +11002200}
2201
2202static int powerbook_sleep(suspend_state_t state)
2203{
2204 int error = 0;
2205
2206 /* Wait for completion of async requests */
2207 while (!batt_req.complete)
2208 pmu_poll();
2209
2210 /* Giveup the lazy FPU & vec so we don't have to back them
2211 * up from the low level code
2212 */
2213 enable_kernel_fp();
2214
2215#ifdef CONFIG_ALTIVEC
2216 if (cpu_has_feature(CPU_FTR_ALTIVEC))
2217 enable_kernel_altivec();
2218#endif /* CONFIG_ALTIVEC */
2219
2220 switch (pmu_kind) {
2221 case PMU_OHARE_BASED:
2222 error = powerbook_sleep_3400();
2223 break;
2224 case PMU_HEATHROW_BASED:
2225 case PMU_PADDINGTON_BASED:
2226 error = powerbook_sleep_grackle();
2227 break;
2228 case PMU_KEYLARGO_BASED:
2229 error = powerbook_sleep_Core99();
2230 break;
2231 default:
2232 return -ENOSYS;
2233 }
2234
2235 if (error)
2236 return error;
2237
2238 mdelay(100);
2239
Johannes Bergf91266e2007-12-12 01:25:59 +11002240 return 0;
2241}
2242
Scott Wood7ac5dde2007-12-13 04:35:19 +11002243static void pmac_suspend_enable_irqs(void)
Johannes Bergf91266e2007-12-12 01:25:59 +11002244{
2245 /* Force a poll of ADB interrupts */
2246 adb_int_pending = 1;
2247 via_pmu_interrupt(0, NULL);
2248
Johannes Bergf91266e2007-12-12 01:25:59 +11002249 mdelay(10);
Johannes Bergf91266e2007-12-12 01:25:59 +11002250
2251 /* Call platform functions marked "on wake" */
2252 pmac_pfunc_base_resume();
2253 pmac_pfunc_i2c_resume();
2254}
2255
2256static int pmu_sleep_valid(suspend_state_t state)
2257{
2258 return state == PM_SUSPEND_MEM
2259 && (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) >= 0);
2260}
2261
Lionel Debroux2f55ac02010-11-16 14:14:02 +01002262static const struct platform_suspend_ops pmu_pm_ops = {
Johannes Bergf91266e2007-12-12 01:25:59 +11002263 .enter = powerbook_sleep,
2264 .valid = pmu_sleep_valid,
2265};
2266
2267static int register_pmu_pm_ops(void)
2268{
Scott Wood7ac5dde2007-12-13 04:35:19 +11002269 if (pmu_kind == PMU_OHARE_BASED)
2270 powerbook_sleep_init_3400();
2271 ppc_md.suspend_disable_irqs = pmac_suspend_disable_irqs;
2272 ppc_md.suspend_enable_irqs = pmac_suspend_enable_irqs;
Johannes Bergf91266e2007-12-12 01:25:59 +11002273 suspend_set_ops(&pmu_pm_ops);
2274
2275 return 0;
2276}
2277
2278device_initcall(register_pmu_pm_ops);
2279#endif
2280
Arnd Bergmann55929332010-04-27 00:24:05 +02002281static int pmu_ioctl(struct file *filp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282 u_int cmd, u_long arg)
2283{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284 __u32 __user *argp = (__u32 __user *)arg;
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002285 int error = -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286
2287 switch (cmd) {
2288 case PMU_IOC_SLEEP:
2289 if (!capable(CAP_SYS_ADMIN))
2290 return -EACCES;
Johannes Bergf91266e2007-12-12 01:25:59 +11002291 return pm_suspend(PM_SUSPEND_MEM);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292 case PMU_IOC_CAN_SLEEP:
Johannes Bergf91266e2007-12-12 01:25:59 +11002293 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002294 return put_user(0, argp);
2295 else
2296 return put_user(1, argp);
2297
Michael Hanselmann5474c122006-06-25 05:47:08 -07002298#ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
2299 /* Compatibility ioctl's for backlight */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300 case PMU_IOC_GET_BACKLIGHT:
Michael Hanselmann5474c122006-06-25 05:47:08 -07002301 {
2302 int brightness;
2303
Michael Hanselmann5474c122006-06-25 05:47:08 -07002304 brightness = pmac_backlight_get_legacy_brightness();
2305 if (brightness < 0)
2306 return brightness;
2307 else
2308 return put_user(brightness, argp);
2309
2310 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002311 case PMU_IOC_SET_BACKLIGHT:
2312 {
Michael Hanselmann5474c122006-06-25 05:47:08 -07002313 int brightness;
2314
Michael Hanselmann5474c122006-06-25 05:47:08 -07002315 error = get_user(brightness, argp);
2316 if (error)
2317 return error;
2318
2319 return pmac_backlight_set_legacy_brightness(brightness);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320 }
2321#ifdef CONFIG_INPUT_ADBHID
2322 case PMU_IOC_GRAB_BACKLIGHT: {
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002323 struct pmu_private *pp = filp->private_data;
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002324
Linus Torvalds1da177e2005-04-16 15:20:36 -07002325 if (pp->backlight_locker)
2326 return 0;
Michael Hanselmann4b755992006-07-30 03:04:19 -07002327
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328 pp->backlight_locker = 1;
Michael Hanselmann4b755992006-07-30 03:04:19 -07002329 pmac_backlight_disable();
2330
Linus Torvalds1da177e2005-04-16 15:20:36 -07002331 return 0;
2332 }
2333#endif /* CONFIG_INPUT_ADBHID */
Michael Hanselmann5474c122006-06-25 05:47:08 -07002334#endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
Michael Hanselmann4b755992006-07-30 03:04:19 -07002335
Linus Torvalds1da177e2005-04-16 15:20:36 -07002336 case PMU_IOC_GET_MODEL:
2337 return put_user(pmu_kind, argp);
2338 case PMU_IOC_HAS_ADB:
2339 return put_user(pmu_has_adb, argp);
2340 }
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002341 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342}
2343
Arnd Bergmann55929332010-04-27 00:24:05 +02002344static long pmu_unlocked_ioctl(struct file *filp,
2345 u_int cmd, u_long arg)
2346{
2347 int ret;
2348
Arnd Bergmannd851b6e2010-06-02 14:28:52 +02002349 mutex_lock(&pmu_info_proc_mutex);
Arnd Bergmann55929332010-04-27 00:24:05 +02002350 ret = pmu_ioctl(filp, cmd, arg);
Arnd Bergmannd851b6e2010-06-02 14:28:52 +02002351 mutex_unlock(&pmu_info_proc_mutex);
Arnd Bergmann55929332010-04-27 00:24:05 +02002352
2353 return ret;
2354}
2355
Andreas Schwab4cc45872010-08-22 06:23:17 +00002356#ifdef CONFIG_COMPAT
2357#define PMU_IOC_GET_BACKLIGHT32 _IOR('B', 1, compat_size_t)
2358#define PMU_IOC_SET_BACKLIGHT32 _IOW('B', 2, compat_size_t)
2359#define PMU_IOC_GET_MODEL32 _IOR('B', 3, compat_size_t)
2360#define PMU_IOC_HAS_ADB32 _IOR('B', 4, compat_size_t)
2361#define PMU_IOC_CAN_SLEEP32 _IOR('B', 5, compat_size_t)
2362#define PMU_IOC_GRAB_BACKLIGHT32 _IOR('B', 6, compat_size_t)
2363
2364static long compat_pmu_ioctl (struct file *filp, u_int cmd, u_long arg)
2365{
2366 switch (cmd) {
2367 case PMU_IOC_SLEEP:
2368 break;
2369 case PMU_IOC_GET_BACKLIGHT32:
2370 cmd = PMU_IOC_GET_BACKLIGHT;
2371 break;
2372 case PMU_IOC_SET_BACKLIGHT32:
2373 cmd = PMU_IOC_SET_BACKLIGHT;
2374 break;
2375 case PMU_IOC_GET_MODEL32:
2376 cmd = PMU_IOC_GET_MODEL;
2377 break;
2378 case PMU_IOC_HAS_ADB32:
2379 cmd = PMU_IOC_HAS_ADB;
2380 break;
2381 case PMU_IOC_CAN_SLEEP32:
2382 cmd = PMU_IOC_CAN_SLEEP;
2383 break;
2384 case PMU_IOC_GRAB_BACKLIGHT32:
2385 cmd = PMU_IOC_GRAB_BACKLIGHT;
2386 break;
2387 default:
2388 return -ENOIOCTLCMD;
2389 }
2390 return pmu_unlocked_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
2391}
2392#endif
2393
Arjan van de Venfa027c22007-02-12 00:55:33 -08002394static const struct file_operations pmu_device_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002395 .read = pmu_read,
2396 .write = pmu_write,
2397 .poll = pmu_fpoll,
Arnd Bergmann55929332010-04-27 00:24:05 +02002398 .unlocked_ioctl = pmu_unlocked_ioctl,
Andreas Schwab4cc45872010-08-22 06:23:17 +00002399#ifdef CONFIG_COMPAT
2400 .compat_ioctl = compat_pmu_ioctl,
2401#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402 .open = pmu_open,
2403 .release = pmu_release,
Arnd Bergmann6038f372010-08-15 18:52:59 +02002404 .llseek = noop_llseek,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002405};
2406
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002407static struct miscdevice pmu_device = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408 PMU_MINOR, "pmu", &pmu_device_fops
2409};
2410
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002411static int pmu_device_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412{
2413 if (!via)
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002414 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415 if (misc_register(&pmu_device) < 0)
2416 printk(KERN_ERR "via-pmu: cannot register misc device.\n");
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002417 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418}
Benjamin Herrenschmidt8c870932005-06-27 14:36:34 -07002419device_initcall(pmu_device_init);
2420
Linus Torvalds1da177e2005-04-16 15:20:36 -07002421
2422#ifdef DEBUG_SLEEP
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002423static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424polled_handshake(volatile unsigned char __iomem *via)
2425{
2426 via[B] &= ~TREQ; eieio();
2427 while ((via[B] & TACK) != 0)
2428 ;
2429 via[B] |= TREQ; eieio();
2430 while ((via[B] & TACK) == 0)
2431 ;
2432}
2433
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002434static inline void
Linus Torvalds1da177e2005-04-16 15:20:36 -07002435polled_send_byte(volatile unsigned char __iomem *via, int x)
2436{
2437 via[ACR] |= SR_OUT | SR_EXT; eieio();
2438 via[SR] = x; eieio();
2439 polled_handshake(via);
2440}
2441
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002442static inline int
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443polled_recv_byte(volatile unsigned char __iomem *via)
2444{
2445 int x;
2446
2447 via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
2448 x = via[SR]; eieio();
2449 polled_handshake(via);
2450 x = via[SR]; eieio();
2451 return x;
2452}
2453
Jon Loeligeraacaf9b2005-09-17 10:36:54 -05002454int
Linus Torvalds1da177e2005-04-16 15:20:36 -07002455pmu_polled_request(struct adb_request *req)
2456{
2457 unsigned long flags;
2458 int i, l, c;
2459 volatile unsigned char __iomem *v = via;
2460
2461 req->complete = 1;
2462 c = req->data[0];
2463 l = pmu_data_len[c][0];
2464 if (l >= 0 && req->nbytes != l + 1)
2465 return -EINVAL;
2466
2467 local_irq_save(flags);
2468 while (pmu_state != idle)
2469 pmu_poll();
2470
2471 while ((via[B] & TACK) == 0)
2472 ;
2473 polled_send_byte(v, c);
2474 if (l < 0) {
2475 l = req->nbytes - 1;
2476 polled_send_byte(v, l);
2477 }
2478 for (i = 1; i <= l; ++i)
2479 polled_send_byte(v, req->data[i]);
2480
2481 l = pmu_data_len[c][1];
2482 if (l < 0)
2483 l = polled_recv_byte(v);
2484 for (i = 0; i < l; ++i)
2485 req->reply[i + req->reply_len] = polled_recv_byte(v);
2486
2487 if (req->done)
2488 (*req->done)(req);
2489
2490 local_irq_restore(flags);
2491 return 0;
2492}
Johannes Bergf91266e2007-12-12 01:25:59 +11002493
2494/* N.B. This doesn't work on the 3400 */
2495void pmu_blink(int n)
2496{
2497 struct adb_request req;
2498
2499 memset(&req, 0, sizeof(req));
2500
2501 for (; n > 0; --n) {
2502 req.nbytes = 4;
2503 req.done = NULL;
2504 req.data[0] = 0xee;
2505 req.data[1] = 4;
2506 req.data[2] = 0;
2507 req.data[3] = 1;
2508 req.reply[0] = ADB_RET_OK;
2509 req.reply_len = 1;
2510 req.reply_expected = 0;
2511 pmu_polled_request(&req);
2512 mdelay(50);
2513 req.nbytes = 4;
2514 req.done = NULL;
2515 req.data[0] = 0xee;
2516 req.data[1] = 4;
2517 req.data[2] = 0;
2518 req.data[3] = 0;
2519 req.reply[0] = ADB_RET_OK;
2520 req.reply_len = 1;
2521 req.reply_expected = 0;
2522 pmu_polled_request(&req);
2523 mdelay(50);
2524 }
2525 mdelay(50);
2526}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002527#endif /* DEBUG_SLEEP */
2528
Johannes Bergf91266e2007-12-12 01:25:59 +11002529#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
Johannes Bergf5965752007-05-08 01:08:00 +10002530int pmu_sys_suspended;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002531
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002532static int pmu_syscore_suspend(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002533{
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002534 /* Suspend PMU event interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002535 pmu_suspend();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002536 pmu_sys_suspended = 1;
Benjamin Herrenschmidt0094f2c2007-12-20 15:00:21 +11002537
2538#ifdef CONFIG_PMAC_BACKLIGHT
2539 /* Tell backlight code not to muck around with the chip anymore */
2540 pmu_backlight_set_sleep(1);
2541#endif
2542
Linus Torvalds1da177e2005-04-16 15:20:36 -07002543 return 0;
2544}
2545
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002546static void pmu_syscore_resume(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547{
2548 struct adb_request req;
2549
2550 if (!pmu_sys_suspended)
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002551 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002552
2553 /* Tell PMU we are ready */
2554 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
2555 pmu_wait_complete(&req);
2556
Benjamin Herrenschmidt0094f2c2007-12-20 15:00:21 +11002557#ifdef CONFIG_PMAC_BACKLIGHT
2558 /* Tell backlight code it can use the chip again */
2559 pmu_backlight_set_sleep(0);
2560#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002561 /* Resume PMU event interrupts */
2562 pmu_resume();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002563 pmu_sys_suspended = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002564}
2565
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002566static struct syscore_ops pmu_syscore_ops = {
2567 .suspend = pmu_syscore_suspend,
2568 .resume = pmu_syscore_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002569};
2570
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002571static int pmu_syscore_register(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002572{
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002573 register_syscore_ops(&pmu_syscore_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002574
Linus Torvalds1da177e2005-04-16 15:20:36 -07002575 return 0;
2576}
Benjamin Herrenschmidte83b9062011-05-20 15:37:22 +10002577subsys_initcall(pmu_syscore_register);
2578#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002579
2580EXPORT_SYMBOL(pmu_request);
Benjamin Herrenschmidt730745a2006-01-07 11:30:44 +11002581EXPORT_SYMBOL(pmu_queue_request);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002582EXPORT_SYMBOL(pmu_poll);
2583EXPORT_SYMBOL(pmu_poll_adb);
2584EXPORT_SYMBOL(pmu_wait_complete);
2585EXPORT_SYMBOL(pmu_suspend);
2586EXPORT_SYMBOL(pmu_resume);
2587EXPORT_SYMBOL(pmu_unlock);
Guido Guenther620a2452008-03-09 06:20:17 +11002588#if defined(CONFIG_PPC32)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002589EXPORT_SYMBOL(pmu_enable_irled);
2590EXPORT_SYMBOL(pmu_battery_count);
2591EXPORT_SYMBOL(pmu_batteries);
2592EXPORT_SYMBOL(pmu_power_flags);
Johannes Bergf91266e2007-12-12 01:25:59 +11002593#endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002594