aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorLen Brown <len.brown@intel.com>2006-07-01 17:21:39 -0400
committerLen Brown <len.brown@intel.com>2006-07-01 17:21:39 -0400
commit309b0f125a22ee34c8f6962677255f7bf6af5e3d (patch)
treeba5897f4b13d9b3fb35f9fcf1e420537da37c08f
parentd0e5f39f1ee2e55d140064bb6d74c8bad25d71d0 (diff)
parent635227ee89929a6e2920fc8aa1cd48f7225d3d93 (diff)
Pull smart-battery into release branch
Diffstat
-rw-r--r--drivers/acpi/Kconfig12
-rw-r--r--drivers/acpi/Makefile2
-rw-r--r--drivers/acpi/ac.c12
-rw-r--r--drivers/acpi/battery.c13
-rw-r--r--drivers/acpi/cm_sbs.c131
-rw-r--r--drivers/acpi/i2c_ec.c406
-rw-r--r--drivers/acpi/i2c_ec.h23
-rw-r--r--drivers/acpi/numa.c4
-rw-r--r--drivers/acpi/sbs.c1766
9 files changed, 2355 insertions, 14 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index bc2652d72fdc..fef7bab12244 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -352,6 +352,18 @@ config ACPI_HOTPLUG_MEMORY
352 If one selects "m," this driver can be loaded using the following 352 If one selects "m," this driver can be loaded using the following
353 command: 353 command:
354 $>modprobe acpi_memhotplug 354 $>modprobe acpi_memhotplug
355
356config ACPI_SBS
357 tristate "Smart Battery System (EXPERIMENTAL)"
358 depends on X86 && I2C
359 depends on EXPERIMENTAL
360 default y
361 help
362 This driver adds support for the Smart Battery System.
363 Depends on I2C (Device Drivers ---> I2C support)
364 A "Smart Battery" is quite old and quite rare compared
365 to today's ACPI "Control Method" battery.
366
355endif # ACPI 367endif # ACPI
356 368
357endmenu 369endmenu
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index f0a68ecf1e57..bce7ca27b429 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -58,3 +58,5 @@ obj-$(CONFIG_ACPI_IBM) += ibm_acpi.o
58obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o 58obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
59obj-y += scan.o motherboard.o 59obj-y += scan.o motherboard.o
60obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o 60obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o
61obj-y += cm_sbs.o
62obj-$(CONFIG_ACPI_SBS) += i2c_ec.o sbs.o
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 69a98da13913..24ccf81d135f 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -50,6 +50,9 @@ ACPI_MODULE_NAME("acpi_ac")
50MODULE_DESCRIPTION(ACPI_AC_DRIVER_NAME); 50MODULE_DESCRIPTION(ACPI_AC_DRIVER_NAME);
51MODULE_LICENSE("GPL"); 51MODULE_LICENSE("GPL");
52 52
53extern struct proc_dir_entry *acpi_lock_ac_dir(void);
54extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
55
53static int acpi_ac_add(struct acpi_device *device); 56static int acpi_ac_add(struct acpi_device *device);
54static int acpi_ac_remove(struct acpi_device *device, int type); 57static int acpi_ac_remove(struct acpi_device *device, int type);
55static int acpi_ac_open_fs(struct inode *inode, struct file *file); 58static int acpi_ac_open_fs(struct inode *inode, struct file *file);
@@ -280,17 +283,16 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
280 283
281static int __init acpi_ac_init(void) 284static int __init acpi_ac_init(void)
282{ 285{
283 int result = 0; 286 int result;
284 287
285 288
286 acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir); 289 acpi_ac_dir = acpi_lock_ac_dir();
287 if (!acpi_ac_dir) 290 if (!acpi_ac_dir)
288 return -ENODEV; 291 return -ENODEV;
289 acpi_ac_dir->owner = THIS_MODULE;
290 292
291 result = acpi_bus_register_driver(&acpi_ac_driver); 293 result = acpi_bus_register_driver(&acpi_ac_driver);
292 if (result < 0) { 294 if (result < 0) {
293 remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir); 295 acpi_unlock_ac_dir(acpi_ac_dir);
294 return -ENODEV; 296 return -ENODEV;
295 } 297 }
296 298
@@ -302,7 +304,7 @@ static void __exit acpi_ac_exit(void)
302 304
303 acpi_bus_unregister_driver(&acpi_ac_driver); 305 acpi_bus_unregister_driver(&acpi_ac_driver);
304 306
305 remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir); 307 acpi_unlock_ac_dir(acpi_ac_dir);
306 308
307 return; 309 return;
308} 310}
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index a192d2b47cc8..24bf4dca88cc 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -59,6 +59,9 @@ ACPI_MODULE_NAME("acpi_battery")
59MODULE_DESCRIPTION(ACPI_BATTERY_DRIVER_NAME); 59MODULE_DESCRIPTION(ACPI_BATTERY_DRIVER_NAME);
60MODULE_LICENSE("GPL"); 60MODULE_LICENSE("GPL");
61 61
62extern struct proc_dir_entry *acpi_lock_battery_dir(void);
63extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
64
62static int acpi_battery_add(struct acpi_device *device); 65static int acpi_battery_add(struct acpi_device *device);
63static int acpi_battery_remove(struct acpi_device *device, int type); 66static int acpi_battery_remove(struct acpi_device *device, int type);
64 67
@@ -752,17 +755,15 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
752 755
753static int __init acpi_battery_init(void) 756static int __init acpi_battery_init(void)
754{ 757{
755 int result = 0; 758 int result;
756
757 759
758 acpi_battery_dir = proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir); 760 acpi_battery_dir = acpi_lock_battery_dir();
759 if (!acpi_battery_dir) 761 if (!acpi_battery_dir)
760 return -ENODEV; 762 return -ENODEV;
761 acpi_battery_dir->owner = THIS_MODULE;
762 763
763 result = acpi_bus_register_driver(&acpi_battery_driver); 764 result = acpi_bus_register_driver(&acpi_battery_driver);
764 if (result < 0) { 765 if (result < 0) {
765 remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir); 766 acpi_unlock_battery_dir(acpi_battery_dir);
766 return -ENODEV; 767 return -ENODEV;
767 } 768 }
768 769
@@ -774,7 +775,7 @@ static void __exit acpi_battery_exit(void)
774 775
775 acpi_bus_unregister_driver(&acpi_battery_driver); 776 acpi_bus_unregister_driver(&acpi_battery_driver);
776 777
777 remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir); 778 acpi_unlock_battery_dir(acpi_battery_dir);
778 779
779 return; 780 return;
780} 781}
diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c
new file mode 100644
index 000000000000..574a75a166c5
--- /dev/null
+++ b/drivers/acpi/cm_sbs.c
@@ -0,0 +1,131 @@
1/*
2 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or (at
7 * your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
17 *
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19 */
20
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/init.h>
24#include <linux/acpi.h>
25#include <linux/types.h>
26#include <linux/proc_fs.h>
27#include <linux/seq_file.h>
28#include <acpi/acpi_bus.h>
29#include <acpi/acpi_drivers.h>
30#include <acpi/acmacros.h>
31#include <acpi/actypes.h>
32#include <acpi/acutils.h>
33
34ACPI_MODULE_NAME("cm_sbs")
35#define ACPI_AC_CLASS "ac_adapter"
36#define ACPI_BATTERY_CLASS "battery"
37#define ACPI_SBS_COMPONENT 0x00080000
38#define _COMPONENT ACPI_SBS_COMPONENT
39static struct proc_dir_entry *acpi_ac_dir;
40static struct proc_dir_entry *acpi_battery_dir;
41
42static struct semaphore cm_sbs_sem;
43
44static int lock_ac_dir_cnt = 0;
45static int lock_battery_dir_cnt = 0;
46
47struct proc_dir_entry *acpi_lock_ac_dir(void)
48{
49
50 down(&cm_sbs_sem);
51 if (!acpi_ac_dir) {
52 acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
53 }
54 if (acpi_ac_dir) {
55 lock_ac_dir_cnt++;
56 } else {
57 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
58 "Cannot create %s\n", ACPI_AC_CLASS));
59 }
60 up(&cm_sbs_sem);
61 return acpi_ac_dir;
62}
63
64EXPORT_SYMBOL(acpi_lock_ac_dir);
65
66void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir_param)
67{
68
69 down(&cm_sbs_sem);
70 if (acpi_ac_dir_param) {
71 lock_ac_dir_cnt--;
72 }
73 if (lock_ac_dir_cnt == 0 && acpi_ac_dir_param && acpi_ac_dir) {
74 remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
75 acpi_ac_dir = 0;
76 }
77 up(&cm_sbs_sem);
78}
79
80EXPORT_SYMBOL(acpi_unlock_ac_dir);
81
82struct proc_dir_entry *acpi_lock_battery_dir(void)
83{
84
85 down(&cm_sbs_sem);
86 if (!acpi_battery_dir) {
87 acpi_battery_dir =
88 proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir);
89 }
90 if (acpi_battery_dir) {
91 lock_battery_dir_cnt++;
92 } else {
93 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
94 "Cannot create %s\n", ACPI_BATTERY_CLASS));
95 }
96 up(&cm_sbs_sem);
97 return acpi_battery_dir;
98}
99
100EXPORT_SYMBOL(acpi_lock_battery_dir);
101
102void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir_param)
103{
104
105 down(&cm_sbs_sem);
106 if (acpi_battery_dir_param) {
107 lock_battery_dir_cnt--;
108 }
109 if (lock_battery_dir_cnt == 0 && acpi_battery_dir_param
110 && acpi_battery_dir) {
111 remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
112 acpi_battery_dir = 0;
113 }
114 up(&cm_sbs_sem);
115 return;
116}
117
118EXPORT_SYMBOL(acpi_unlock_battery_dir);
119
120static int __init acpi_cm_sbs_init(void)
121{
122
123 if (acpi_disabled)
124 return 0;
125
126 init_MUTEX(&cm_sbs_sem);
127
128 return 0;
129}
130
131subsys_initcall(acpi_cm_sbs_init);
diff --git a/drivers/acpi/i2c_ec.c b/drivers/acpi/i2c_ec.c
new file mode 100644
index 000000000000..84239d51dc0c
--- /dev/null
+++ b/drivers/acpi/i2c_ec.c
@@ -0,0 +1,406 @@
1/*
2 * SMBus driver for ACPI Embedded Controller ($Revision: 1.3 $)
3 *
4 * Copyright (c) 2002, 2005 Ducrot Bruno
5 * Copyright (c) 2005 Rich Townsend (tiny hacks & tweaks)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation version 2.
10 */
11
12#include <linux/version.h>
13#include <linux/module.h>
14#include <linux/slab.h>
15#include <linux/kernel.h>
16#include <linux/stddef.h>
17#include <linux/sched.h>
18#include <linux/init.h>
19#include <linux/i2c.h>
20#include <linux/acpi.h>
21#include <linux/delay.h>
22
23#include "i2c_ec.h"
24
25#define xudelay(t) udelay(t)
26#define xmsleep(t) msleep(t)
27
28#define ACPI_EC_HC_COMPONENT 0x00080000
29#define ACPI_EC_HC_CLASS "ec_hc_smbus"
30#define ACPI_EC_HC_HID "ACPI0001"
31#define ACPI_EC_HC_DRIVER_NAME "ACPI EC HC smbus driver"
32#define ACPI_EC_HC_DEVICE_NAME "EC HC smbus"
33
34#define _COMPONENT ACPI_EC_HC_COMPONENT
35
36ACPI_MODULE_NAME("acpi_smbus")
37
38static int acpi_ec_hc_add(struct acpi_device *device);
39static int acpi_ec_hc_remove(struct acpi_device *device, int type);
40
41static struct acpi_driver acpi_ec_hc_driver = {
42 .name = ACPI_EC_HC_DRIVER_NAME,
43 .class = ACPI_EC_HC_CLASS,
44 .ids = ACPI_EC_HC_HID,
45 .ops = {
46 .add = acpi_ec_hc_add,
47 .remove = acpi_ec_hc_remove,
48 },
49};
50
51/* Various bit mask for EC_SC (R) */
52#define OBF 0x01
53#define IBF 0x02
54#define CMD 0x08
55#define BURST 0x10
56#define SCI_EVT 0x20
57#define SMI_EVT 0x40
58
59/* Commands for EC_SC (W) */
60#define RD_EC 0x80
61#define WR_EC 0x81
62#define BE_EC 0x82
63#define BD_EC 0x83
64#define QR_EC 0x84
65
66/*
67 * ACPI 2.0 chapter 13 SMBus 2.0 EC register model
68 */
69
70#define ACPI_EC_SMB_PRTCL 0x00 /* protocol, PEC */
71#define ACPI_EC_SMB_STS 0x01 /* status */
72#define ACPI_EC_SMB_ADDR 0x02 /* address */
73#define ACPI_EC_SMB_CMD 0x03 /* command */
74#define ACPI_EC_SMB_DATA 0x04 /* 32 data registers */
75#define ACPI_EC_SMB_BCNT 0x24 /* number of data bytes */
76#define ACPI_EC_SMB_ALRM_A 0x25 /* alarm address */
77#define ACPI_EC_SMB_ALRM_D 0x26 /* 2 bytes alarm data */
78
79#define ACPI_EC_SMB_STS_DONE 0x80
80#define ACPI_EC_SMB_STS_ALRM 0x40
81#define ACPI_EC_SMB_STS_RES 0x20
82#define ACPI_EC_SMB_STS_STATUS 0x1f
83
84#define ACPI_EC_SMB_STATUS_OK 0x00
85#define ACPI_EC_SMB_STATUS_FAIL 0x07
86#define ACPI_EC_SMB_STATUS_DNAK 0x10
87#define ACPI_EC_SMB_STATUS_DERR 0x11
88#define ACPI_EC_SMB_STATUS_CMD_DENY 0x12
89#define ACPI_EC_SMB_STATUS_UNKNOWN 0x13
90#define ACPI_EC_SMB_STATUS_ACC_DENY 0x17
91#define ACPI_EC_SMB_STATUS_TIMEOUT 0x18
92#define ACPI_EC_SMB_STATUS_NOTSUP 0x19
93#define ACPI_EC_SMB_STATUS_BUSY 0x1A
94#define ACPI_EC_SMB_STATUS_PEC 0x1F
95
96#define ACPI_EC_SMB_PRTCL_WRITE 0x00
97#define ACPI_EC_SMB_PRTCL_READ 0x01
98#define ACPI_EC_SMB_PRTCL_QUICK 0x02
99#define ACPI_EC_SMB_PRTCL_BYTE 0x04
100#define ACPI_EC_SMB_PRTCL_BYTE_DATA 0x06
101#define ACPI_EC_SMB_PRTCL_WORD_DATA 0x08
102#define ACPI_EC_SMB_PRTCL_BLOCK_DATA 0x0a
103#define ACPI_EC_SMB_PRTCL_PROC_CALL 0x0c
104#define ACPI_EC_SMB_PRTCL_BLOCK_PROC_CALL 0x0d
105#define ACPI_EC_SMB_PRTCL_I2C_BLOCK_DATA 0x4a
106#define ACPI_EC_SMB_PRTCL_PEC 0x80
107
108/* Length of pre/post transaction sleep (msec) */
109#define ACPI_EC_SMB_TRANSACTION_SLEEP 1
110#define ACPI_EC_SMB_ACCESS_SLEEP1 1
111#define ACPI_EC_SMB_ACCESS_SLEEP2 10
112
113static int acpi_ec_smb_read(struct acpi_ec_smbus *smbus, u8 address, u8 * data)
114{
115 u8 val;
116 int err;
117
118 err = ec_read(smbus->base + address, &val);
119 if (!err) {
120 *data = val;
121 }
122 xmsleep(ACPI_EC_SMB_TRANSACTION_SLEEP);
123 return (err);
124}
125
126static int acpi_ec_smb_write(struct acpi_ec_smbus *smbus, u8 address, u8 data)
127{
128 int err;
129
130 err = ec_write(smbus->base + address, data);
131 return (err);
132}
133
134static int
135acpi_ec_smb_access(struct i2c_adapter *adap, u16 addr, unsigned short flags,
136 char read_write, u8 command, int size,
137 union i2c_smbus_data *data)
138{
139 struct acpi_ec_smbus *smbus = adap->algo_data;
140 unsigned char protocol, len = 0, pec, temp[2] = { 0, 0 };
141 int i;
142
143 if (read_write == I2C_SMBUS_READ) {
144 protocol = ACPI_EC_SMB_PRTCL_READ;
145 } else {
146 protocol = ACPI_EC_SMB_PRTCL_WRITE;
147 }
148 pec = (flags & I2C_CLIENT_PEC) ? ACPI_EC_SMB_PRTCL_PEC : 0;
149
150 switch (size) {
151
152 case I2C_SMBUS_QUICK:
153 protocol |= ACPI_EC_SMB_PRTCL_QUICK;
154 read_write = I2C_SMBUS_WRITE;
155 break;
156
157 case I2C_SMBUS_BYTE:
158 if (read_write == I2C_SMBUS_WRITE) {
159 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->byte);
160 }
161 protocol |= ACPI_EC_SMB_PRTCL_BYTE;
162 break;
163
164 case I2C_SMBUS_BYTE_DATA:
165 acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
166 if (read_write == I2C_SMBUS_WRITE) {
167 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->byte);
168 }
169 protocol |= ACPI_EC_SMB_PRTCL_BYTE_DATA;
170 break;
171
172 case I2C_SMBUS_WORD_DATA:
173 acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
174 if (read_write == I2C_SMBUS_WRITE) {
175 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->word);
176 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + 1,
177 data->word >> 8);
178 }
179 protocol |= ACPI_EC_SMB_PRTCL_WORD_DATA | pec;
180 break;
181
182 case I2C_SMBUS_BLOCK_DATA:
183 acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
184 if (read_write == I2C_SMBUS_WRITE) {
185 len = min_t(u8, data->block[0], 32);
186 acpi_ec_smb_write(smbus, ACPI_EC_SMB_BCNT, len);
187 for (i = 0; i < len; i++)
188 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + i,
189 data->block[i + 1]);
190 }
191 protocol |= ACPI_EC_SMB_PRTCL_BLOCK_DATA | pec;
192 break;
193
194 case I2C_SMBUS_I2C_BLOCK_DATA:
195 len = min_t(u8, data->block[0], 32);
196 acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
197 acpi_ec_smb_write(smbus, ACPI_EC_SMB_BCNT, len);
198 if (read_write == I2C_SMBUS_WRITE) {
199 for (i = 0; i < len; i++) {
200 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + i,
201 data->block[i + 1]);
202 }
203 }
204 protocol |= ACPI_EC_SMB_PRTCL_I2C_BLOCK_DATA;
205 break;
206
207 case I2C_SMBUS_PROC_CALL:
208 acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
209 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA, data->word);
210 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + 1, data->word >> 8);
211 protocol = ACPI_EC_SMB_PRTCL_PROC_CALL | pec;
212 read_write = I2C_SMBUS_READ;
213 break;
214
215 case I2C_SMBUS_BLOCK_PROC_CALL:
216 protocol |= pec;
217 len = min_t(u8, data->block[0], 31);
218 acpi_ec_smb_write(smbus, ACPI_EC_SMB_CMD, command);
219 acpi_ec_smb_write(smbus, ACPI_EC_SMB_BCNT, len);
220 for (i = 0; i < len; i++)
221 acpi_ec_smb_write(smbus, ACPI_EC_SMB_DATA + i,
222 data->block[i + 1]);
223 protocol = ACPI_EC_SMB_PRTCL_BLOCK_PROC_CALL | pec;
224 read_write = I2C_SMBUS_READ;
225 break;
226
227 default:
228 ACPI_DEBUG_PRINT((ACPI_DB_WARN, "EC SMBus adapter: "
229 "Unsupported transaction %d\n", size));
230 return (-1);
231 }
232
233 acpi_ec_smb_write(smbus, ACPI_EC_SMB_ADDR, addr << 1);
234 acpi_ec_smb_write(smbus, ACPI_EC_SMB_PRTCL, protocol);
235
236 acpi_ec_smb_read(smbus, ACPI_EC_SMB_STS, temp + 0);
237
238 if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
239 xudelay(500);
240 acpi_ec_smb_read(smbus, ACPI_EC_SMB_STS, temp + 0);
241 }
242 if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
243 xmsleep(ACPI_EC_SMB_ACCESS_SLEEP2);
244 acpi_ec_smb_read(smbus, ACPI_EC_SMB_STS, temp + 0);
245 }
246 if ((~temp[0] & ACPI_EC_SMB_STS_DONE)
247 || (temp[0] & ACPI_EC_SMB_STS_STATUS)) {
248 return (-1);
249 }
250
251 if (read_write == I2C_SMBUS_WRITE) {
252 return (0);
253 }
254
255 switch (size) {
256
257 case I2C_SMBUS_BYTE:
258 case I2C_SMBUS_BYTE_DATA:
259 acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA, &data->byte);
260 break;
261
262 case I2C_SMBUS_WORD_DATA:
263 case I2C_SMBUS_PROC_CALL:
264 acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA, temp + 0);
265 acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA + 1, temp + 1);
266 data->word = (temp[1] << 8) | temp[0];
267 break;
268
269 case I2C_SMBUS_BLOCK_DATA:
270 case I2C_SMBUS_BLOCK_PROC_CALL:
271 len = 0;
272 acpi_ec_smb_read(smbus, ACPI_EC_SMB_BCNT, &len);
273 len = min_t(u8, len, 32);
274 case I2C_SMBUS_I2C_BLOCK_DATA:
275 for (i = 0; i < len; i++)
276 acpi_ec_smb_read(smbus, ACPI_EC_SMB_DATA + i,
277 data->block + i + 1);
278 data->block[0] = len;
279 break;
280 }
281
282 return (0);
283}
284
285static u32 acpi_ec_smb_func(struct i2c_adapter *adapter)
286{
287
288 return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
289 I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
290 I2C_FUNC_SMBUS_BLOCK_DATA |
291 I2C_FUNC_SMBUS_PROC_CALL |
292 I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
293 I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_HWPEC_CALC);
294}
295
296static struct i2c_algorithm acpi_ec_smbus_algorithm = {
297 .smbus_xfer = acpi_ec_smb_access,
298 .functionality = acpi_ec_smb_func,
299};
300
301static int acpi_ec_hc_add(struct acpi_device *device)
302{
303 int status;
304 unsigned long val;
305 struct acpi_ec_hc *ec_hc;
306 struct acpi_ec_smbus *smbus;
307
308 if (!device) {
309 return -EINVAL;
310 }
311
312 ec_hc = kmalloc(sizeof(struct acpi_ec_hc), GFP_KERNEL);
313 if (!ec_hc) {
314 return -ENOMEM;
315 }
316 memset(ec_hc, 0, sizeof(struct acpi_ec_hc));
317
318 smbus = kmalloc(sizeof(struct acpi_ec_smbus), GFP_KERNEL);
319 if (!smbus) {
320 kfree(ec_hc);
321 return -ENOMEM;
322 }
323 memset(smbus, 0, sizeof(struct acpi_ec_smbus));
324
325 ec_hc->handle = device->handle;
326 strcpy(acpi_device_name(device), ACPI_EC_HC_DEVICE_NAME);
327 strcpy(acpi_device_class(device), ACPI_EC_HC_CLASS);
328 acpi_driver_data(device) = ec_hc;
329
330 status = acpi_evaluate_integer(ec_hc->handle, "_EC", NULL, &val);
331 if (ACPI_FAILURE(status)) {
332 ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Error obtaining _EC\n"));
333 kfree(ec_hc->smbus);
334 kfree(smbus);
335 return -EIO;
336 }
337
338 smbus->ec = acpi_driver_data(device->parent);
339 smbus->base = (val & 0xff00ull) >> 8;
340 smbus->alert = val & 0xffull;
341
342 smbus->adapter.owner = THIS_MODULE;
343 smbus->adapter.algo = &acpi_ec_smbus_algorithm;
344 smbus->adapter.algo_data = smbus;
345
346 if (i2c_add_adapter(&smbus->adapter)) {
347 ACPI_DEBUG_PRINT((ACPI_DB_WARN,
348 "EC SMBus adapter: Failed to register adapter\n"));
349 kfree(smbus);
350 kfree(ec_hc);
351 return -EIO;
352 }
353
354 ec_hc->smbus = smbus;
355
356 printk(KERN_INFO PREFIX "%s [%s]\n",
357 acpi_device_name(device), acpi_device_bid(device));
358
359 return AE_OK;
360}
361
362static int acpi_ec_hc_remove(struct acpi_device *device, int type)
363{
364 struct acpi_ec_hc *ec_hc;
365
366 if (!device) {
367 return -EINVAL;
368 }
369 ec_hc = acpi_driver_data(device);
370
371 i2c_del_adapter(&ec_hc->smbus->adapter);
372 kfree(ec_hc->smbus);
373 kfree(ec_hc);
374
375 return AE_OK;
376}
377
378static int __init acpi_ec_hc_init(void)
379{
380 int result;
381
382 result = acpi_bus_register_driver(&acpi_ec_hc_driver);
383 if (result < 0) {
384 return -ENODEV;
385 }
386 return 0;
387}
388
389static void __exit acpi_ec_hc_exit(void)
390{
391 acpi_bus_unregister_driver(&acpi_ec_hc_driver);
392}
393
394struct acpi_ec_hc *acpi_get_ec_hc(struct acpi_device *device)
395{
396 return ((struct acpi_ec_hc *)acpi_driver_data(device->parent));
397}
398
399EXPORT_SYMBOL(acpi_get_ec_hc);
400
401module_init(acpi_ec_hc_init);
402module_exit(acpi_ec_hc_exit);
403
404MODULE_LICENSE("GPL");
405MODULE_AUTHOR("Ducrot Bruno");
406MODULE_DESCRIPTION("ACPI EC SMBus driver");
diff --git a/drivers/acpi/i2c_ec.h b/drivers/acpi/i2c_ec.h
new file mode 100644
index 000000000000..7c53fb732d61
--- /dev/null
+++ b/drivers/acpi/i2c_ec.h
@@ -0,0 +1,23 @@
1/*
2 * SMBus driver for ACPI Embedded Controller ($Revision: 1.2 $)
3 *
4 * Copyright (c) 2002, 2005 Ducrot Bruno
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation version 2.
9 */
10
11struct acpi_ec_smbus {
12 struct i2c_adapter adapter;
13 union acpi_ec *ec;
14 int base;
15 int alert;
16};
17
18struct acpi_ec_hc {
19 acpi_handle handle;
20 struct acpi_ec_smbus *smbus;
21};
22
23struct acpi_ec_hc *acpi_get_ec_hc(struct acpi_device *device);
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 4d622981f61a..e5e448edca41 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -259,12 +259,10 @@ int acpi_get_node(acpi_handle *handle)
259{ 259{
260 int pxm, node = -1; 260 int pxm, node = -1;
261 261
262 ACPI_FUNCTION_TRACE("acpi_get_node");
263
264 pxm = acpi_get_pxm(handle); 262 pxm = acpi_get_pxm(handle);
265 if (pxm >= 0) 263 if (pxm >= 0)
266 node = acpi_map_pxm_to_node(pxm); 264 node = acpi_map_pxm_to_node(pxm);
267 265
268 return_VALUE(node); 266 return node;
269} 267}
270EXPORT_SYMBOL(acpi_get_node); 268EXPORT_SYMBOL(acpi_get_node);
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
new file mode 100644
index 000000000000..db7b350a5035
--- /dev/null
+++ b/drivers/acpi/sbs.c
@@ -0,0 +1,1766 @@
1/*
2 * acpi_sbs.c - ACPI Smart Battery System Driver ($Revision: 1.16 $)
3 *
4 * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu>
5 *
6 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or (at
11 * your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 *
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
23 */
24
25#include <linux/init.h>
26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/kernel.h>
29#include <linux/proc_fs.h>
30#include <linux/seq_file.h>
31#include <asm/uaccess.h>
32#include <linux/acpi.h>
33#include <linux/i2c.h>
34#include <linux/delay.h>
35
36#include "i2c_ec.h"
37
38#define DEF_CAPACITY_UNIT 3
39#define MAH_CAPACITY_UNIT 1
40#define MWH_CAPACITY_UNIT 2
41#define CAPACITY_UNIT DEF_CAPACITY_UNIT
42
43#define REQUEST_UPDATE_MODE 1
44#define QUEUE_UPDATE_MODE 2
45
46#define DATA_TYPE_COMMON 0
47#define DATA_TYPE_INFO 1
48#define DATA_TYPE_STATE 2
49#define DATA_TYPE_ALARM 3
50#define DATA_TYPE_AC_STATE 4
51
52extern struct proc_dir_entry *acpi_lock_ac_dir(void);
53extern struct proc_dir_entry *acpi_lock_battery_dir(void);
54extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
55extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
56
57#define ACPI_SBS_COMPONENT 0x00080000
58#define ACPI_SBS_CLASS "sbs"
59#define ACPI_AC_CLASS "ac_adapter"
60#define ACPI_BATTERY_CLASS "battery"
61#define ACPI_SBS_HID "ACPI0002"
62#define ACPI_SBS_DRIVER_NAME "ACPI Smart Battery System Driver"
63#define ACPI_SBS_DEVICE_NAME "Smart Battery System"
64#define ACPI_SBS_FILE_INFO "info"
65#define ACPI_SBS_FILE_STATE "state"
66#define ACPI_SBS_FILE_ALARM "alarm"
67#define ACPI_BATTERY_DIR_NAME "BAT%i"
68#define ACPI_AC_DIR_NAME "AC0"
69#define ACPI_SBC_SMBUS_ADDR 0x9
70#define ACPI_SBSM_SMBUS_ADDR 0xa
71#define ACPI_SB_SMBUS_ADDR 0xb
72#define ACPI_SBS_AC_NOTIFY_STATUS 0x80
73#define ACPI_SBS_BATTERY_NOTIFY_STATUS 0x80
74#define ACPI_SBS_BATTERY_NOTIFY_INFO 0x81
75
76#define _COMPONENT ACPI_SBS_COMPONENT
77
78#define MAX_SBS_BAT 4
79#define MAX_SMBUS_ERR 1
80
81ACPI_MODULE_NAME("acpi_sbs");
82
83MODULE_AUTHOR("Rich Townsend");
84MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
85MODULE_LICENSE("GPL");
86
87static struct semaphore sbs_sem;
88
89#define UPDATE_MODE QUEUE_UPDATE_MODE
90/* REQUEST_UPDATE_MODE QUEUE_UPDATE_MODE */
91#define UPDATE_INFO_MODE 0
92#define UPDATE_TIME 60
93#define UPDATE_TIME2 0
94
95static int capacity_mode = CAPACITY_UNIT;
96static int update_mode = UPDATE_MODE;
97static int update_info_mode = UPDATE_INFO_MODE;
98static int update_time = UPDATE_TIME;
99static int update_time2 = UPDATE_TIME2;
100
101module_param(capacity_mode, int, CAPACITY_UNIT);
102module_param(update_mode, int, UPDATE_MODE);
103module_param(update_info_mode, int, UPDATE_INFO_MODE);
104module_param(update_time, int, UPDATE_TIME);
105module_param(update_time2, int, UPDATE_TIME2);
106
107static int acpi_sbs_add(struct acpi_device *device);
108static int acpi_sbs_remove(struct acpi_device *device, int type);
109static void acpi_battery_smbus_err_handler(struct acpi_ec_smbus *smbus);
110static void acpi_sbs_update_queue(void *data);
111
112static struct acpi_driver acpi_sbs_driver = {
113 .name = ACPI_SBS_DRIVER_NAME,
114 .class = ACPI_SBS_CLASS,
115 .ids = ACPI_SBS_HID,
116 .ops = {
117 .add = acpi_sbs_add,
118 .remove = acpi_sbs_remove,
119 },
120};
121
122struct acpi_battery_info {
123 int capacity_mode;
124 s16 full_charge_capacity;
125 s16 design_capacity;
126 s16 design_voltage;
127 int vscale;
128 int ipscale;
129 s16 serial_number;
130 char manufacturer_name[I2C_SMBUS_BLOCK_MAX + 3];
131 char device_name[I2C_SMBUS_BLOCK_MAX + 3];
132 char device_chemistry[I2C_SMBUS_BLOCK_MAX + 3];
133};
134
135struct acpi_battery_state {
136 s16 voltage;
137 s16 amperage;
138 s16 remaining_capacity;
139 s16 average_time_to_empty;
140 s16 average_time_to_full;
141 s16 battery_status;
142};
143
144struct acpi_battery_alarm {
145 s16 remaining_capacity;
146};
147
148struct acpi_battery {
149 int alive;
150 int battery_present;
151 int id;
152 int init_state;
153 struct acpi_sbs *sbs;
154 struct acpi_battery_info info;
155 struct acpi_battery_state state;
156 struct acpi_battery_alarm alarm;
157 struct proc_dir_entry *battery_entry;
158};
159
160struct acpi_sbs {
161 acpi_handle handle;
162 struct acpi_device *device;
163 struct acpi_ec_smbus *smbus;
164 int sbsm_present;
165 int sbsm_batteries_supported;
166 int ac_present;
167 struct proc_dir_entry *ac_entry;
168 struct acpi_battery battery[MAX_SBS_BAT];
169 int update_info_mode;
170 int zombie;
171 int update_time;
172 int update_time2;
173 struct timer_list update_timer;
174};
175
176static void acpi_update_delay(struct acpi_sbs *sbs);
177static int acpi_sbs_update_run(struct acpi_sbs *sbs, int data_type);
178
179/* --------------------------------------------------------------------------
180 SMBus Communication
181 -------------------------------------------------------------------------- */
182
183static void acpi_battery_smbus_err_handler(struct acpi_ec_smbus *smbus)
184{
185 union i2c_smbus_data data;
186 int result = 0;
187 char *err_str;
188 int err_number;
189
190 data.word = 0;
191
192 result = smbus->adapter.algo->
193 smbus_xfer(&smbus->adapter,
194 ACPI_SB_SMBUS_ADDR,
195 0, I2C_SMBUS_READ, 0x16, I2C_SMBUS_BLOCK_DATA, &data);
196
197 err_number = (data.word & 0x000f);
198
199 switch (data.word & 0x000f) {
200 case 0x0000:
201 err_str = "unexpected bus error";
202 break;
203 case 0x0001:
204 err_str = "busy";
205 break;
206 case 0x0002:
207 err_str = "reserved command";
208 break;
209 case 0x0003:
210 err_str = "unsupported command";
211 break;
212 case 0x0004:
213 err_str = "access denied";
214 break;
215 case 0x0005:
216 err_str = "overflow/underflow";
217 break;
218 case 0x0006:
219 err_str = "bad size";
220 break;
221 case 0x0007:
222 err_str = "unknown error";
223 break;
224 default:
225 err_str = "unrecognized error";
226 }
227 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
228 "%s: ret %i, err %i\n", err_str, result, err_number));
229}
230
231static int
232acpi_sbs_smbus_read_word(struct acpi_ec_smbus *smbus, int addr, int func,
233 u16 * word,
234 void (*err_handler) (struct acpi_ec_smbus * smbus))
235{
236 union i2c_smbus_data data;
237 int result = 0;
238 int i;
239
240 if (err_handler == NULL) {
241 err_handler = acpi_battery_smbus_err_handler;
242 }
243
244 for (i = 0; i < MAX_SMBUS_ERR; i++) {
245 result =
246 smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0,
247 I2C_SMBUS_READ, func,
248 I2C_SMBUS_WORD_DATA, &data);
249 if (result) {
250 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
251 "try %i: smbus->adapter.algo->smbus_xfer() failed\n",
252 i));
253 if (err_handler) {
254 err_handler(smbus);
255 }
256 } else {
257 *word = data.word;
258 break;
259 }
260 }
261
262 return result;
263}
264
265static int
266acpi_sbs_smbus_read_str(struct acpi_ec_smbus *smbus, int addr, int func,
267 char *str,
268 void (*err_handler) (struct acpi_ec_smbus * smbus))
269{
270 union i2c_smbus_data data;
271 int result = 0;
272 int i;
273
274 if (err_handler == NULL) {
275 err_handler = acpi_battery_smbus_err_handler;
276 }
277
278 for (i = 0; i < MAX_SMBUS_ERR; i++) {
279 result =
280 smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0,
281 I2C_SMBUS_READ, func,
282 I2C_SMBUS_BLOCK_DATA,
283 &data);
284 if (result) {
285 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
286 "try %i: smbus->adapter.algo->smbus_xfer() failed\n",
287 i));
288 if (err_handler) {
289 err_handler(smbus);
290 }
291 } else {
292 strncpy(str, (const char *)data.block + 1,
293 data.block[0]);
294 str[data.block[0]] = 0;
295 break;
296 }
297 }
298
299 return result;
300}
301
302static int
303acpi_sbs_smbus_write_word(struct acpi_ec_smbus *smbus, int addr, int func,
304 int word,
305 void (*err_handler) (struct acpi_ec_smbus * smbus))
306{
307 union i2c_smbus_data data;
308 int result = 0;
309 int i;
310
311 if (err_handler == NULL) {
312 err_handler = acpi_battery_smbus_err_handler;
313 }
314
315 data.word = word;
316
317 for (i = 0; i < MAX_SMBUS_ERR; i++) {
318 result =
319 smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0,
320 I2C_SMBUS_WRITE, func,
321 I2C_SMBUS_WORD_DATA, &data);
322 if (result) {
323 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
324 "try %i: smbus->adapter.algo"
325 "->smbus_xfer() failed\n", i));
326 if (err_handler) {
327 err_handler(smbus);
328 }
329 } else {
330 break;
331 }
332 }
333
334 return result;
335}
336
337/* --------------------------------------------------------------------------
338 Smart Battery System Management
339 -------------------------------------------------------------------------- */
340
341/* Smart Battery */
342
343static int acpi_sbs_generate_event(struct acpi_device *device,
344 int event, int state, char *bid, char *class)
345{
346 char bid_saved[5];
347 char class_saved[20];
348 int result = 0;
349
350 strcpy(bid_saved, acpi_device_bid(device));
351 strcpy(class_saved, acpi_device_class(device));
352
353 strcpy(acpi_device_bid(device), bid);
354 strcpy(acpi_device_class(device), class);
355
356 result = acpi_bus_generate_event(device, event, state);
357
358 strcpy(acpi_device_bid(device), bid_saved);
359 strcpy(acpi_device_class(device), class_saved);
360
361 return result;
362}
363
364static int acpi_battery_get_present(struct acpi_battery *battery)
365{
366 s16 state;
367 int result = 0;
368 int is_present = 0;
369
370 result = acpi_sbs_smbus_read_word(battery->sbs->smbus,
371 ACPI_SBSM_SMBUS_ADDR, 0x01,
372 &state, NULL);
373 if (result) {
374 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
375 "acpi_sbs_smbus_read_word() failed"));
376 }
377 if (!result) {
378 is_present = (state & 0x000f) & (1 << battery->id);
379 }
380 battery->battery_present = is_present;
381
382 return result;
383}
384
385static int acpi_battery_is_present(struct acpi_battery *battery)
386{
387 return (battery->battery_present);
388}
389
390static int acpi_ac_is_present(struct acpi_sbs *sbs)
391{
392 return (sbs->ac_present);
393}
394
395static int acpi_battery_select(struct acpi_battery *battery)
396{
397 struct acpi_ec_smbus *smbus = battery->sbs->smbus;
398 int result = 0;
399 s16 state;
400 int foo;
401
402 if (battery->sbs->sbsm_present) {
403
404 /* Take special care not to knobble other nibbles of
405 * state (aka selector_state), since
406 * it causes charging to halt on SBSELs */
407
408 result =
409 acpi_sbs_smbus_read_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x01,
410 &state, NULL);
411 if (result) {
412 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
413 "acpi_sbs_smbus_read_word() failed\n"));
414 goto end;
415 }
416
417 foo = (state & 0x0fff) | (1 << (battery->id + 12));
418 result =
419 acpi_sbs_smbus_write_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x01,
420 foo, NULL);
421 if (result) {
422 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
423 "acpi_sbs_smbus_write_word() failed\n"));
424 goto end;
425 }
426 }
427
428 end:
429 return result;
430}
431
432static int acpi_sbsm_get_info(struct acpi_sbs *sbs)
433{
434 struct acpi_ec_smbus *smbus = sbs->smbus;
435 int result = 0;
436 s16 battery_system_info;
437
438 result = acpi_sbs_smbus_read_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x04,
439 &battery_system_info, NULL);
440 if (result) {
441 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
442 "acpi_sbs_smbus_read_word() failed\n"));
443 goto end;
444 }
445
446 sbs->sbsm_batteries_supported = battery_system_info & 0x000f;
447
448 end:
449
450 return result;
451}
452
453static int acpi_battery_get_info(struct acpi_battery *battery)
454{
455 struct acpi_ec_smbus *smbus = battery->sbs->smbus;
456 int result = 0;
457 s16 battery_mode;
458 s16 specification_info;
459
460 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x03,
461 &battery_mode,
462 &acpi_battery_smbus_err_handler);
463 if (result) {
464 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
465 "acpi_sbs_smbus_read_word() failed\n"));
466 goto end;
467 }
468 battery->info.capacity_mode = (battery_mode & 0x8000) >> 15;
469
470 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x10,
471 &battery->info.full_charge_capacity,
472 &acpi_battery_smbus_err_handler);
473 if (result) {
474 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
475 "acpi_sbs_smbus_read_word() failed\n"));
476 goto end;
477 }
478
479 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x18,
480 &battery->info.design_capacity,
481 &acpi_battery_smbus_err_handler);
482
483 if (result) {
484 goto end;
485 }
486
487 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x19,
488 &battery->info.design_voltage,
489 &acpi_battery_smbus_err_handler);
490 if (result) {
491 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
492 "acpi_sbs_smbus_read_word() failed\n"));
493 goto end;
494 }
495
496 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x1a,
497 &specification_info,
498 &acpi_battery_smbus_err_handler);
499 if (result) {
500 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
501 "acpi_sbs_smbus_read_word() failed\n"));
502 goto end;
503 }
504
505 switch ((specification_info & 0x0f00) >> 8) {
506 case 1:
507 battery->info.vscale = 10;
508 break;
509 case 2:
510 battery->info.vscale = 100;
511 break;
512 case 3:
513 battery->info.vscale = 1000;
514 break;
515 default:
516 battery->info.vscale = 1;
517 }
518
519 switch ((specification_info & 0xf000) >> 12) {
520 case 1:
521 battery->info.ipscale = 10;
522 break;
523 case 2:
524 battery->info.ipscale = 100;
525 break;
526 case 3:
527 battery->info.ipscale = 1000;
528 break;
529 default:
530 battery->info.ipscale = 1;
531 }
532
533 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x1c,
534 &battery->info.serial_number,
535 &acpi_battery_smbus_err_handler);
536 if (result) {
537 goto end;
538 }
539
540 result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x20,
541 battery->info.manufacturer_name,
542 &acpi_battery_smbus_err_handler);
543 if (result) {
544 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
545 "acpi_sbs_smbus_read_str() failed\n"));
546 goto end;
547 }
548
549 result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x21,
550 battery->info.device_name,
551 &acpi_battery_smbus_err_handler);
552 if (result) {
553 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
554 "acpi_sbs_smbus_read_str() failed\n"));
555 goto end;
556 }
557
558 result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x22,
559 battery->info.device_chemistry,
560 &acpi_battery_smbus_err_handler);
561 if (result) {
562 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
563 "acpi_sbs_smbus_read_str() failed\n"));
564 goto end;
565 }
566
567 end:
568 return result;
569}
570
571static void acpi_update_delay(struct acpi_sbs *sbs)
572{
573 if (sbs->zombie) {
574 return;
575 }
576 if (sbs->update_time2 > 0) {
577 msleep(sbs->update_time2 * 1000);
578 }
579}
580
581static int acpi_battery_get_state(struct acpi_battery *battery)
582{
583 struct acpi_ec_smbus *smbus = battery->sbs->smbus;
584 int result = 0;
585
586 acpi_update_delay(battery->sbs);
587 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x09,
588 &battery->state.voltage,
589 &acpi_battery_smbus_err_handler);
590 if (result) {
591 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
592 "acpi_sbs_smbus_read_word() failed\n"));
593 goto end;
594 }
595
596 acpi_update_delay(battery->sbs);
597 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x0a,
598 &battery->state.amperage,
599 &acpi_battery_smbus_err_handler);
600 if (result) {
601 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
602 "acpi_sbs_smbus_read_word() failed\n"));
603 goto end;
604 }
605
606 acpi_update_delay(battery->sbs);
607 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x0f,
608 &battery->state.remaining_capacity,
609 &acpi_battery_smbus_err_handler);
610 if (result) {
611 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
612 "acpi_sbs_smbus_read_word() failed\n"));
613 goto end;
614 }
615
616 acpi_update_delay(battery->sbs);
617 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x12,
618 &battery->state.average_time_to_empty,
619 &acpi_battery_smbus_err_handler);
620 if (result) {
621 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
622 "acpi_sbs_smbus_read_word() failed\n"));
623 goto end;
624 }
625
626 acpi_update_delay(battery->sbs);
627 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x13,
628 &battery->state.average_time_to_full,
629 &acpi_battery_smbus_err_handler);
630 if (result) {
631 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
632 "acpi_sbs_smbus_read_word() failed\n"));
633 goto end;
634 }
635
636 acpi_update_delay(battery->sbs);
637 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x16,
638 &battery->state.battery_status,
639 &acpi_battery_smbus_err_handler);
640 if (result) {
641 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
642 "acpi_sbs_smbus_read_word() failed\n"));
643 goto end;
644 }
645
646 acpi_update_delay(battery->sbs);
647
648 end:
649 return result;
650}
651
652static int acpi_battery_get_alarm(struct acpi_battery *battery)
653{
654 struct acpi_ec_smbus *smbus = battery->sbs->smbus;
655 int result = 0;
656
657 result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01,
658 &battery->alarm.remaining_capacity,
659 &acpi_battery_smbus_err_handler);
660 if (result) {
661 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
662 "acpi_sbs_smbus_read_word() failed\n"));
663 goto end;
664 }
665
666 acpi_update_delay(battery->sbs);
667
668 end:
669
670 return result;
671}
672
673static int acpi_battery_set_alarm(struct acpi_battery *battery,
674 unsigned long alarm)
675{
676 struct acpi_ec_smbus *smbus = battery->sbs->smbus;
677 int result = 0;
678 s16 battery_mode;
679 int foo;
680
681 result = acpi_battery_select(battery);
682 if (result) {
683 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
684 "acpi_battery_select() failed\n"));
685 goto end;
686 }
687
688 /* If necessary, enable the alarm */
689
690 if (alarm > 0) {
691 result =
692 acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x03,
693 &battery_mode,
694 &acpi_battery_smbus_err_handler);
695 if (result) {
696 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
697 "acpi_sbs_smbus_read_word() failed\n"));
698 goto end;
699 }
700
701 result =
702 acpi_sbs_smbus_write_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01,
703 battery_mode & 0xbfff,
704 &acpi_battery_smbus_err_handler);
705 if (result) {
706 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
707 "acpi_sbs_smbus_write_word() failed\n"));
708 goto end;
709 }
710 }
711
712 foo = alarm / (battery->info.capacity_mode ? 10 : 1);
713 result = acpi_sbs_smbus_write_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01,
714 foo,
715 &acpi_battery_smbus_err_handler);
716 if (result) {
717 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
718 "acpi_sbs_smbus_write_word() failed\n"));
719 goto end;
720 }
721
722 end:
723
724 return result;
725}
726
727static int acpi_battery_set_mode(struct acpi_battery *battery)
728{
729 int result = 0;
730 s16 battery_mode;
731
732 if (capacity_mode == DEF_CAPACITY_UNIT) {
733 goto end;
734 }
735
736 result = acpi_sbs_smbus_read_word(battery->sbs->smbus,
737 ACPI_SB_SMBUS_ADDR, 0x03,
738 &battery_mode, NULL);
739 if (result) {
740 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
741 "acpi_sbs_smbus_read_word() failed\n"));
742 goto end;
743 }
744
745 if (capacity_mode == MAH_CAPACITY_UNIT) {
746 battery_mode &= 0x7fff;
747 } else {
748 battery_mode |= 0x8000;
749 }
750 result = acpi_sbs_smbus_write_word(battery->sbs->smbus,
751 ACPI_SB_SMBUS_ADDR, 0x03,
752 battery_mode, NULL);
753 if (result) {
754 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
755 "acpi_sbs_smbus_write_word() failed\n"));
756 goto end;
757 }
758
759 result = acpi_sbs_smbus_read_word(battery->sbs->smbus,
760 ACPI_SB_SMBUS_ADDR, 0x03,
761 &battery_mode, NULL);
762 if (result) {
763 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
764 "acpi_sbs_smbus_read_word() failed\n"));
765 goto end;
766 }
767
768 end:
769 return result;
770}
771
772static int acpi_battery_init(struct acpi_battery *battery)
773{
774 int result = 0;
775
776 result = acpi_battery_select(battery);
777 if (result) {
778 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
779 "acpi_battery_init() failed\n"));
780 goto end;
781 }
782
783 result = acpi_battery_set_mode(battery);
784 if (result) {
785 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
786 "acpi_battery_set_mode() failed\n"));
787 goto end;
788 }
789
790 result = acpi_battery_get_info(battery);
791 if (result) {
792 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
793 "acpi_battery_get_info() failed\n"));
794 goto end;
795 }
796
797 result = acpi_battery_get_state(battery);
798 if (result) {
799 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
800 "acpi_battery_get_state() failed\n"));
801 goto end;
802 }
803
804 result = acpi_battery_get_alarm(battery);
805 if (result) {
806 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
807 "acpi_battery_get_alarm() failed\n"));
808 goto end;
809 }
810
811 end:
812 return result;
813}
814
815static int acpi_ac_get_present(struct acpi_sbs *sbs)
816{
817 struct acpi_ec_smbus *smbus = sbs->smbus;
818 int result = 0;
819 s16 charger_status;
820
821 result = acpi_sbs_smbus_read_word(smbus, ACPI_SBC_SMBUS_ADDR, 0x13,
822 &charger_status, NULL);
823
824 if (result) {
825 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
826 "acpi_sbs_smbus_read_word() failed\n"));
827 goto end;
828 }
829
830 sbs->ac_present = (charger_status & 0x8000) >> 15;
831
832 end:
833
834 return result;
835}
836
837/* --------------------------------------------------------------------------
838 FS Interface (/proc/acpi)
839 -------------------------------------------------------------------------- */
840
841/* Generic Routines */
842
843static int
844acpi_sbs_generic_add_fs(struct proc_dir_entry **dir,
845 struct proc_dir_entry *parent_dir,
846 char *dir_name,
847 struct file_operations *info_fops,
848 struct file_operations *state_fops,
849 struct file_operations *alarm_fops, void *data)
850{
851 struct proc_dir_entry *entry = NULL;
852
853 if (!*dir) {
854 *dir = proc_mkdir(dir_name, parent_dir);
855 if (!*dir) {
856 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
857 "proc_mkdir() failed\n"));
858 return -ENODEV;
859 }
860 (*dir)->owner = THIS_MODULE;
861 }
862
863 /* 'info' [R] */
864 if (info_fops) {
865 entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir);
866 if (!entry) {
867 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
868 "create_proc_entry() failed\n"));
869 } else {
870 entry->proc_fops = info_fops;
871 entry->data = data;
872 entry->owner = THIS_MODULE;
873 }
874 }
875
876 /* 'state' [R] */
877 if (state_fops) {
878 entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir);
879 if (!entry) {
880 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
881 "create_proc_entry() failed\n"));
882 } else {
883 entry->proc_fops = state_fops;
884 entry->data = data;
885 entry->owner = THIS_MODULE;
886 }
887 }
888
889 /* 'alarm' [R/W] */
890 if (alarm_fops) {
891 entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir);
892 if (!entry) {
893 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
894 "create_proc_entry() failed\n"));
895 } else {
896 entry->proc_fops = alarm_fops;
897 entry->data = data;
898 entry->owner = THIS_MODULE;
899 }
900 }
901
902 return 0;
903}
904
905static void
906acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir,
907 struct proc_dir_entry *parent_dir)
908{
909
910 if (*dir) {
911 remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
912 remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
913 remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
914 remove_proc_entry((*dir)->name, parent_dir);
915 *dir = NULL;
916 }
917
918}
919
920/* Smart Battery Interface */
921
922static struct proc_dir_entry *acpi_battery_dir = NULL;
923
924static int acpi_battery_read_info(struct seq_file *seq, void *offset)
925{
926 struct acpi_battery *battery = (struct acpi_battery *)seq->private;
927 int cscale;
928 int result = 0;
929
930 if (battery->sbs->zombie) {
931 return -ENODEV;
932 }
933
934 down(&sbs_sem);
935
936 if (update_mode == REQUEST_UPDATE_MODE) {
937 result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_INFO);
938 if (result) {
939 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
940 "acpi_sbs_update_run() failed\n"));
941 }
942 }
943
944 if (acpi_battery_is_present(battery)) {
945 seq_printf(seq, "present: yes\n");
946 } else {
947 seq_printf(seq, "present: no\n");
948 goto end;
949 }
950
951 if (battery->info.capacity_mode) {
952 cscale = battery->info.vscale * battery->info.ipscale;
953 } else {
954 cscale = battery->info.ipscale;
955 }
956 seq_printf(seq, "design capacity: %i%s",
957 battery->info.design_capacity * cscale,
958 battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
959
960 seq_printf(seq, "last full capacity: %i%s",
961 battery->info.full_charge_capacity * cscale,
962 battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
963
964 seq_printf(seq, "battery technology: rechargeable\n");
965
966 seq_printf(seq, "design voltage: %i mV\n",
967 battery->info.design_voltage * battery->info.vscale);
968
969 seq_printf(seq, "design capacity warning: unknown\n");
970 seq_printf(seq, "design capacity low: unknown\n");
971 seq_printf(seq, "capacity granularity 1: unknown\n");
972 seq_printf(seq, "capacity granularity 2: unknown\n");
973
974 seq_printf(seq, "model number: %s\n",
975 battery->info.device_name);
976
977 seq_printf(seq, "serial number: %i\n",
978 battery->info.serial_number);
979
980 seq_printf(seq, "battery type: %s\n",
981 battery->info.device_chemistry);
982
983 seq_printf(seq, "OEM info: %s\n",
984 battery->info.manufacturer_name);
985
986 end:
987
988 up(&sbs_sem);
989
990 return result;
991}
992
993static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
994{
995 return single_open(file, acpi_battery_read_info, PDE(inode)->data);
996}
997
998static int acpi_battery_read_state(struct seq_file *seq, void *offset)
999{
1000 struct acpi_battery *battery = (struct acpi_battery *)seq->private;
1001 int result = 0;
1002 int cscale;
1003 int foo;
1004
1005 if (battery->sbs->zombie) {
1006 return -ENODEV;
1007 }
1008
1009 down(&sbs_sem);
1010
1011 if (update_mode == REQUEST_UPDATE_MODE) {
1012 result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_STATE);
1013 if (result) {
1014 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1015 "acpi_sbs_update_run() failed\n"));
1016 }
1017 }
1018
1019 if (acpi_battery_is_present(battery)) {
1020 seq_printf(seq, "present: yes\n");
1021 } else {
1022 seq_printf(seq, "present: no\n");
1023 goto end;
1024 }
1025
1026 if (battery->info.capacity_mode) {
1027 cscale = battery->info.vscale * battery->info.ipscale;
1028 } else {
1029 cscale = battery->info.ipscale;
1030 }
1031
1032 if (battery->state.battery_status & 0x0010) {
1033 seq_printf(seq, "capacity state: critical\n");
1034 } else {
1035 seq_printf(seq, "capacity state: ok\n");
1036 }
1037 if (battery->state.amperage < 0) {
1038 seq_printf(seq, "charging state: discharging\n");
1039 foo = battery->state.remaining_capacity * cscale * 60 /
1040 (battery->state.average_time_to_empty == 0 ? 1 :
1041 battery->state.average_time_to_empty);
1042 seq_printf(seq, "present rate: %i%s\n",
1043 foo, battery->info.capacity_mode ? "0 mW" : " mA");
1044 } else if (battery->state.amperage > 0) {
1045 seq_printf(seq, "charging state: charging\n");
1046 foo = (battery->info.full_charge_capacity -
1047 battery->state.remaining_capacity) * cscale * 60 /
1048 (battery->state.average_time_to_full == 0 ? 1 :
1049 battery->state.average_time_to_full);
1050 seq_printf(seq, "present rate: %i%s\n",
1051 foo, battery->info.capacity_mode ? "0 mW" : " mA");
1052 } else {
1053 seq_printf(seq, "charging state: charged\n");
1054 seq_printf(seq, "present rate: 0 %s\n",
1055 battery->info.capacity_mode ? "mW" : "mA");
1056 }
1057
1058 seq_printf(seq, "remaining capacity: %i%s",
1059 battery->state.remaining_capacity * cscale,
1060 battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
1061
1062 seq_printf(seq, "present voltage: %i mV\n",
1063 battery->state.voltage * battery->info.vscale);
1064
1065 end:
1066
1067 up(&sbs_sem);
1068
1069 return result;
1070}
1071
1072static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
1073{
1074 return single_open(file, acpi_battery_read_state, PDE(inode)->data);
1075}
1076
1077static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
1078{
1079 struct acpi_battery *battery = (struct acpi_battery *)seq->private;
1080 int result = 0;
1081 int cscale;
1082
1083 if (battery->sbs->zombie) {
1084 return -ENODEV;
1085 }
1086
1087 down(&sbs_sem);
1088
1089 if (update_mode == REQUEST_UPDATE_MODE) {
1090 result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_ALARM);
1091 if (result) {
1092 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1093 "acpi_sbs_update_run() failed\n"));
1094 }
1095 }
1096
1097 if (!acpi_battery_is_present(battery)) {
1098 seq_printf(seq, "present: no\n");
1099 goto end;
1100 }
1101
1102 if (battery->info.capacity_mode) {
1103 cscale = battery->info.vscale * battery->info.ipscale;
1104 } else {
1105 cscale = battery->info.ipscale;
1106 }
1107
1108 seq_printf(seq, "alarm: ");
1109 if (battery->alarm.remaining_capacity) {
1110 seq_printf(seq, "%i%s",
1111 battery->alarm.remaining_capacity * cscale,
1112 battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
1113 } else {
1114 seq_printf(seq, "disabled\n");
1115 }
1116
1117 end:
1118
1119 up(&sbs_sem);
1120
1121 return result;
1122}
1123
1124static ssize_t
1125acpi_battery_write_alarm(struct file *file, const char __user * buffer,
1126 size_t count, loff_t * ppos)
1127{
1128 struct seq_file *seq = (struct seq_file *)file->private_data;
1129 struct acpi_battery *battery = (struct acpi_battery *)seq->private;
1130 char alarm_string[12] = { '\0' };
1131 int result, old_alarm, new_alarm;
1132
1133 if (battery->sbs->zombie) {
1134 return -ENODEV;
1135 }
1136
1137 down(&sbs_sem);
1138
1139 if (!acpi_battery_is_present(battery)) {
1140 result = -ENODEV;
1141 goto end;
1142 }
1143
1144 if (count > sizeof(alarm_string) - 1) {
1145 result = -EINVAL;
1146 goto end;
1147 }
1148
1149 if (copy_from_user(alarm_string, buffer, count)) {
1150 result = -EFAULT;
1151 goto end;
1152 }
1153
1154 alarm_string[count] = 0;
1155
1156 old_alarm = battery->alarm.remaining_capacity;
1157 new_alarm = simple_strtoul(alarm_string, NULL, 0);
1158
1159 result = acpi_battery_set_alarm(battery, new_alarm);
1160 if (result) {
1161 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1162 "acpi_battery_set_alarm() failed\n"));
1163 (void)acpi_battery_set_alarm(battery, old_alarm);
1164 goto end;
1165 }
1166 result = acpi_battery_get_alarm(battery);
1167 if (result) {
1168 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1169 "acpi_battery_get_alarm() failed\n"));
1170 (void)acpi_battery_set_alarm(battery, old_alarm);
1171 goto end;
1172 }
1173
1174 end:
1175 up(&sbs_sem);
1176
1177 if (result) {
1178 return result;
1179 } else {
1180 return count;
1181 }
1182}
1183
1184static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
1185{
1186 return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
1187}
1188
1189static struct file_operations acpi_battery_info_fops = {
1190 .open = acpi_battery_info_open_fs,
1191 .read = seq_read,
1192 .llseek = seq_lseek,
1193 .release = single_release,
1194 .owner = THIS_MODULE,
1195};
1196
1197static struct file_operations acpi_battery_state_fops = {
1198 .open = acpi_battery_state_open_fs,
1199 .read = seq_read,
1200 .llseek = seq_lseek,
1201 .release = single_release,
1202 .owner = THIS_MODULE,
1203};
1204
1205static struct file_operations acpi_battery_alarm_fops = {
1206 .open = acpi_battery_alarm_open_fs,
1207 .read = seq_read,
1208 .write = acpi_battery_write_alarm,
1209 .llseek = seq_lseek,
1210 .release = single_release,
1211 .owner = THIS_MODULE,
1212};
1213
1214/* Legacy AC Adapter Interface */
1215
1216static struct proc_dir_entry *acpi_ac_dir = NULL;
1217
1218static int acpi_ac_read_state(struct seq_file *seq, void *offset)
1219{
1220 struct acpi_sbs *sbs = (struct acpi_sbs *)seq->private;
1221 int result;
1222
1223 if (sbs->zombie) {
1224 return -ENODEV;
1225 }
1226
1227 down(&sbs_sem);
1228
1229 if (update_mode == REQUEST_UPDATE_MODE) {
1230 result = acpi_sbs_update_run(sbs, DATA_TYPE_AC_STATE);
1231 if (result) {
1232 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1233 "acpi_sbs_update_run() failed\n"));
1234 }
1235 }
1236
1237 seq_printf(seq, "state: %s\n",
1238 sbs->ac_present ? "on-line" : "off-line");
1239
1240 up(&sbs_sem);
1241
1242 return 0;
1243}
1244
1245static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
1246{
1247 return single_open(file, acpi_ac_read_state, PDE(inode)->data);
1248}
1249
1250static struct file_operations acpi_ac_state_fops = {
1251 .open = acpi_ac_state_open_fs,
1252 .read = seq_read,
1253 .llseek = seq_lseek,
1254 .release = single_release,
1255 .owner = THIS_MODULE,
1256};
1257
1258/* --------------------------------------------------------------------------
1259 Driver Interface
1260 -------------------------------------------------------------------------- */
1261
1262/* Smart Battery */
1263
1264static int acpi_battery_add(struct acpi_sbs *sbs, int id)
1265{
1266 int is_present;
1267 int result;
1268 char dir_name[32];
1269 struct acpi_battery *battery;
1270
1271 battery = &sbs->battery[id];
1272
1273 battery->alive = 0;
1274
1275 battery->init_state = 0;
1276 battery->id = id;
1277 battery->sbs = sbs;
1278
1279 result = acpi_battery_select(battery);
1280 if (result) {
1281 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1282 "acpi_battery_select() failed\n"));
1283 goto end;
1284 }
1285
1286 result = acpi_battery_get_present(battery);
1287 if (result) {
1288 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1289 "acpi_battery_get_present() failed\n"));
1290 goto end;
1291 }
1292
1293 is_present = acpi_battery_is_present(battery);
1294
1295 if (is_present) {
1296 result = acpi_battery_init(battery);
1297 if (result) {
1298 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1299 "acpi_battery_init() failed\n"));
1300 goto end;
1301 }
1302 battery->init_state = 1;
1303 }
1304
1305 (void)sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id);
1306
1307 result = acpi_sbs_generic_add_fs(&battery->battery_entry,
1308 acpi_battery_dir,
1309 dir_name,
1310 &acpi_battery_info_fops,
1311 &acpi_battery_state_fops,
1312 &acpi_battery_alarm_fops, battery);
1313 if (result) {
1314 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1315 "acpi_sbs_generic_add_fs() failed\n"));
1316 goto end;
1317 }
1318 battery->alive = 1;
1319
1320 end:
1321 return result;
1322}
1323
1324static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
1325{
1326
1327 if (sbs->battery[id].battery_entry) {
1328 acpi_sbs_generic_remove_fs(&(sbs->battery[id].battery_entry),
1329 acpi_battery_dir);
1330 }
1331}
1332
1333static int acpi_ac_add(struct acpi_sbs *sbs)
1334{
1335 int result;
1336
1337 result = acpi_ac_get_present(sbs);
1338 if (result) {
1339 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1340 "acpi_ac_get_present() failed\n"));
1341 goto end;
1342 }
1343
1344 result = acpi_sbs_generic_add_fs(&sbs->ac_entry,
1345 acpi_ac_dir,
1346 ACPI_AC_DIR_NAME,
1347 NULL, &acpi_ac_state_fops, NULL, sbs);
1348 if (result) {
1349 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1350 "acpi_sbs_generic_add_fs() failed\n"));
1351 goto end;
1352 }
1353
1354 end:
1355
1356 return result;
1357}
1358
1359static void acpi_ac_remove(struct acpi_sbs *sbs)
1360{
1361
1362 if (sbs->ac_entry) {
1363 acpi_sbs_generic_remove_fs(&sbs->ac_entry, acpi_ac_dir);
1364 }
1365}
1366
1367static void acpi_sbs_update_queue_run(unsigned long data)
1368{
1369 acpi_os_execute(OSL_GPE_HANDLER, acpi_sbs_update_queue, (void *)data);
1370}
1371
1372static int acpi_sbs_update_run(struct acpi_sbs *sbs, int data_type)
1373{
1374 struct acpi_battery *battery;
1375 int result = 0;
1376 int old_ac_present;
1377 int old_battery_present;
1378 int new_ac_present;
1379 int new_battery_present;
1380 int id;
1381 char dir_name[32];
1382 int do_battery_init, do_ac_init;
1383 s16 old_remaining_capacity;
1384
1385 if (sbs->zombie) {
1386 goto end;
1387 }
1388
1389 old_ac_present = acpi_ac_is_present(sbs);
1390
1391 result = acpi_ac_get_present(sbs);
1392 if (result) {
1393 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1394 "acpi_ac_get_present() failed\n"));
1395 }
1396
1397 new_ac_present = acpi_ac_is_present(sbs);
1398
1399 do_ac_init = (old_ac_present != new_ac_present);
1400
1401 if (data_type == DATA_TYPE_AC_STATE) {
1402 goto end;
1403 }
1404
1405 for (id = 0; id < MAX_SBS_BAT; id++) {
1406 battery = &sbs->battery[id];
1407 if (battery->alive == 0) {
1408 continue;
1409 }
1410
1411 old_remaining_capacity = battery->state.remaining_capacity;
1412
1413 old_battery_present = acpi_battery_is_present(battery);
1414
1415 result = acpi_battery_select(battery);
1416 if (result) {
1417 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1418 "acpi_battery_select() failed\n"));
1419 }
1420 if (sbs->zombie) {
1421 goto end;
1422 }
1423
1424 result = acpi_battery_get_present(battery);
1425 if (result) {
1426 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1427 "acpi_battery_get_present() failed\n"));
1428 }
1429 if (sbs->zombie) {
1430 goto end;
1431 }
1432
1433 new_battery_present = acpi_battery_is_present(battery);
1434
1435 do_battery_init = ((old_battery_present != new_battery_present)
1436 && new_battery_present);
1437
1438 if (sbs->zombie) {
1439 goto end;
1440 }
1441 if (do_ac_init || do_battery_init ||
1442 update_info_mode || sbs->update_info_mode) {
1443 if (sbs->update_info_mode) {
1444 sbs->update_info_mode = 0;
1445 } else {
1446 sbs->update_info_mode = 1;
1447 }
1448 result = acpi_battery_init(battery);
1449 if (result) {
1450 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1451 "acpi_battery_init() "
1452 "failed\n"));
1453 }
1454 }
1455 if (data_type == DATA_TYPE_INFO) {
1456 continue;
1457 }
1458
1459 if (sbs->zombie) {
1460 goto end;
1461 }
1462 if (new_battery_present) {
1463 result = acpi_battery_get_alarm(battery);
1464 if (result) {
1465 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1466 "acpi_battery_get_alarm() "
1467 "failed\n"));
1468 }
1469 if (data_type == DATA_TYPE_ALARM) {
1470 continue;
1471 }
1472
1473 result = acpi_battery_get_state(battery);
1474 if (result) {
1475 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1476 "acpi_battery_get_state() "
1477 "failed\n"));
1478 }
1479 }
1480 if (sbs->zombie) {
1481 goto end;
1482 }
1483 if (data_type != DATA_TYPE_COMMON) {
1484 continue;
1485 }
1486
1487 if (old_battery_present != new_battery_present) {
1488 (void)sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id);
1489 result = acpi_sbs_generate_event(sbs->device,
1490 ACPI_SBS_BATTERY_NOTIFY_STATUS,
1491 new_battery_present,
1492 dir_name,
1493 ACPI_BATTERY_CLASS);
1494 if (result) {
1495 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1496 "acpi_sbs_generate_event() "
1497 "failed\n"));
1498 }
1499 }
1500 if (old_remaining_capacity != battery->state.remaining_capacity) {
1501 (void)sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id);
1502 result = acpi_sbs_generate_event(sbs->device,
1503 ACPI_SBS_BATTERY_NOTIFY_STATUS,
1504 new_battery_present,
1505 dir_name,
1506 ACPI_BATTERY_CLASS);
1507 if (result) {
1508 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1509 "acpi_sbs_generate_event() failed\n"));
1510 }
1511 }
1512
1513 }
1514 if (sbs->zombie) {
1515 goto end;
1516 }
1517 if (data_type != DATA_TYPE_COMMON) {
1518 goto end;
1519 }
1520
1521 if (old_ac_present != new_ac_present) {
1522 result = acpi_sbs_generate_event(sbs->device,
1523 ACPI_SBS_AC_NOTIFY_STATUS,
1524 new_ac_present,
1525 ACPI_AC_DIR_NAME,
1526 ACPI_AC_CLASS);
1527 if (result) {
1528 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1529 "acpi_sbs_generate_event() failed\n"));
1530 }
1531 }
1532
1533 end:
1534 return result;
1535}
1536
1537static void acpi_sbs_update_queue(void *data)
1538{
1539 struct acpi_sbs *sbs = data;
1540 unsigned long delay = -1;
1541 int result;
1542
1543 if (sbs->zombie) {
1544 goto end;
1545 }
1546
1547 result = acpi_sbs_update_run(sbs, DATA_TYPE_COMMON);
1548 if (result) {
1549 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1550 "acpi_sbs_update_run() failed\n"));
1551 }
1552
1553 if (sbs->zombie) {
1554 goto end;
1555 }
1556
1557 if (update_mode == REQUEST_UPDATE_MODE) {
1558 goto end;
1559 }
1560
1561 delay = jiffies + HZ * update_time;
1562 sbs->update_timer.data = (unsigned long)data;
1563 sbs->update_timer.function = acpi_sbs_update_queue_run;
1564 sbs->update_timer.expires = delay;
1565 add_timer(&sbs->update_timer);
1566 end:
1567 ;
1568}
1569
1570static int acpi_sbs_add(struct acpi_device *device)
1571{
1572 struct acpi_sbs *sbs = NULL;
1573 struct acpi_ec_hc *ec_hc = NULL;
1574 int result, remove_result = 0;
1575 unsigned long sbs_obj;
1576 int id, cnt;
1577 acpi_status status = AE_OK;
1578
1579 sbs = kmalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
1580 if (!sbs) {
1581 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "kmalloc() failed\n"));
1582 return -ENOMEM;
1583 }
1584 memset(sbs, 0, sizeof(struct acpi_sbs));
1585
1586 cnt = 0;
1587 while (cnt < 10) {
1588 cnt++;
1589 ec_hc = acpi_get_ec_hc(device);
1590 if (ec_hc) {
1591 break;
1592 }
1593 msleep(1000);
1594 }
1595
1596 if (!ec_hc) {
1597 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1598 "acpi_get_ec_hc() failed: "
1599 "NO driver found for EC HC SMBus\n"));
1600 result = -ENODEV;
1601 goto end;
1602 }
1603
1604 sbs->device = device;
1605 sbs->smbus = ec_hc->smbus;
1606
1607 strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
1608 strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
1609 acpi_driver_data(device) = sbs;
1610
1611 sbs->update_time = 0;
1612 sbs->update_time2 = 0;
1613
1614 result = acpi_ac_add(sbs);
1615 if (result) {
1616 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "acpi_ac_add() failed\n"));
1617 goto end;
1618 }
1619 result = acpi_evaluate_integer(device->handle, "_SBS", NULL, &sbs_obj);
1620 if (ACPI_FAILURE(result)) {
1621 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1622 "acpi_evaluate_integer() failed\n"));
1623 result = -EIO;
1624 goto end;
1625 }
1626
1627 if (sbs_obj > 0) {
1628 result = acpi_sbsm_get_info(sbs);
1629 if (result) {
1630 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1631 "acpi_sbsm_get_info() failed\n"));
1632 goto end;
1633 }
1634 sbs->sbsm_present = 1;
1635 }
1636 if (sbs->sbsm_present == 0) {
1637 result = acpi_battery_add(sbs, 0);
1638 if (result) {
1639 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1640 "acpi_battery_add() failed\n"));
1641 goto end;
1642 }
1643 } else {
1644 for (id = 0; id < MAX_SBS_BAT; id++) {
1645 if ((sbs->sbsm_batteries_supported & (1 << id))) {
1646 result = acpi_battery_add(sbs, id);
1647 if (result) {
1648 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1649 "acpi_battery_add() "
1650 "failed\n"));
1651 goto end;
1652 }
1653 }
1654 }
1655 }
1656
1657 sbs->handle = device->handle;
1658
1659 init_timer(&sbs->update_timer);
1660 if (update_mode == QUEUE_UPDATE_MODE) {
1661 status = acpi_os_execute(OSL_GPE_HANDLER,
1662 acpi_sbs_update_queue, (void *)sbs);
1663 if (status != AE_OK) {
1664 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1665 "acpi_os_execute() failed\n"));
1666 }
1667 }
1668 sbs->update_time = update_time;
1669 sbs->update_time2 = update_time2;
1670
1671 printk(KERN_INFO PREFIX "%s [%s]\n",
1672 acpi_device_name(device), acpi_device_bid(device));
1673
1674 end:
1675 if (result) {
1676 remove_result = acpi_sbs_remove(device, 0);
1677 if (remove_result) {
1678 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1679 "acpi_sbs_remove() failed\n"));
1680 }
1681 }
1682
1683 return result;
1684}
1685
1686int acpi_sbs_remove(struct acpi_device *device, int type)
1687{
1688 struct acpi_sbs *sbs = (struct acpi_sbs *)acpi_driver_data(device);
1689 int id;
1690
1691 if (!device || !sbs) {
1692 return -EINVAL;
1693 }
1694
1695 sbs->zombie = 1;
1696 sbs->update_time = 0;
1697 sbs->update_time2 = 0;
1698 del_timer_sync(&sbs->update_timer);
1699 acpi_os_wait_events_complete(NULL);
1700 del_timer_sync(&sbs->update_timer);
1701
1702 for (id = 0; id < MAX_SBS_BAT; id++) {
1703 acpi_battery_remove(sbs, id);
1704 }
1705
1706 acpi_ac_remove(sbs);
1707
1708 kfree(sbs);
1709
1710 return 0;
1711}
1712
1713static int __init acpi_sbs_init(void)
1714{
1715 int result = 0;
1716
1717 init_MUTEX(&sbs_sem);
1718
1719 if (capacity_mode != DEF_CAPACITY_UNIT
1720 && capacity_mode != MAH_CAPACITY_UNIT
1721 && capacity_mode != MWH_CAPACITY_UNIT) {
1722 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "acpi_sbs_init: "
1723 "invalid capacity_mode = %d\n",
1724 capacity_mode));
1725 return -EINVAL;
1726 }
1727
1728 acpi_ac_dir = acpi_lock_ac_dir();
1729 if (!acpi_ac_dir) {
1730 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1731 "acpi_lock_ac_dir() failed\n"));
1732 return -ENODEV;
1733 }
1734
1735 acpi_battery_dir = acpi_lock_battery_dir();
1736 if (!acpi_battery_dir) {
1737 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1738 "acpi_lock_battery_dir() failed\n"));
1739 return -ENODEV;
1740 }
1741
1742 result = acpi_bus_register_driver(&acpi_sbs_driver);
1743 if (result < 0) {
1744 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
1745 "acpi_bus_register_driver() failed\n"));
1746 return -ENODEV;
1747 }
1748
1749 return 0;
1750}
1751
1752static void __exit acpi_sbs_exit(void)
1753{
1754
1755 acpi_bus_unregister_driver(&acpi_sbs_driver);
1756
1757 acpi_unlock_ac_dir(acpi_ac_dir);
1758 acpi_ac_dir = NULL;
1759 acpi_unlock_battery_dir(acpi_battery_dir);
1760 acpi_battery_dir = NULL;
1761
1762 return;
1763}
1764
1765module_init(acpi_sbs_init);
1766module_exit(acpi_sbs_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-30 10:43:43 -0500