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-rw-r--r--drivers/misc/Kconfig16
-rw-r--r--drivers/misc/Makefile2
-rw-r--r--drivers/misc/acer-wmi.c6
-rw-r--r--drivers/misc/asus-laptop.c10
-rw-r--r--drivers/misc/c2port/Kconfig35
-rw-r--r--drivers/misc/c2port/Makefile3
-rw-r--r--drivers/misc/c2port/c2port-duramar2150.c158
-rw-r--r--drivers/misc/c2port/core.c1003
-rw-r--r--drivers/misc/compal-laptop.c12
-rw-r--r--drivers/misc/eeepc-laptop.c12
-rw-r--r--drivers/misc/fujitsu-laptop.c43
-rw-r--r--drivers/misc/ics932s401.c515
-rw-r--r--drivers/misc/intel_menlow.c10
-rw-r--r--drivers/misc/msi-laptop.c16
-rw-r--r--drivers/misc/sony-laptop.c6
-rw-r--r--drivers/misc/thinkpad_acpi.c29
16 files changed, 1832 insertions, 44 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 9494400e8fd0..fee7304102af 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -227,10 +227,20 @@ config HP_WMI
227 To compile this driver as a module, choose M here: the module will 227 To compile this driver as a module, choose M here: the module will
228 be called hp-wmi. 228 be called hp-wmi.
229 229
230config ICS932S401
231 tristate "Integrated Circuits ICS932S401"
232 depends on I2C && EXPERIMENTAL
233 help
234 If you say yes here you get support for the Integrated Circuits
235 ICS932S401 clock control chips.
236
237 This driver can also be built as a module. If so, the module
238 will be called ics932s401.
239
230config MSI_LAPTOP 240config MSI_LAPTOP
231 tristate "MSI Laptop Extras" 241 tristate "MSI Laptop Extras"
232 depends on X86 242 depends on X86
233 depends on ACPI_EC 243 depends on ACPI
234 depends on BACKLIGHT_CLASS_DEVICE 244 depends on BACKLIGHT_CLASS_DEVICE
235 ---help--- 245 ---help---
236 This is a driver for laptops built by MSI (MICRO-STAR 246 This is a driver for laptops built by MSI (MICRO-STAR
@@ -260,7 +270,7 @@ config PANASONIC_LAPTOP
260config COMPAL_LAPTOP 270config COMPAL_LAPTOP
261 tristate "Compal Laptop Extras" 271 tristate "Compal Laptop Extras"
262 depends on X86 272 depends on X86
263 depends on ACPI_EC 273 depends on ACPI
264 depends on BACKLIGHT_CLASS_DEVICE 274 depends on BACKLIGHT_CLASS_DEVICE
265 ---help--- 275 ---help---
266 This is a driver for laptops built by Compal: 276 This is a driver for laptops built by Compal:
@@ -488,4 +498,6 @@ config SGI_GRU_DEBUG
488 This option enables addition debugging code for the SGI GRU driver. If 498 This option enables addition debugging code for the SGI GRU driver. If
489 you are unsure, say N. 499 you are unsure, say N.
490 500
501source "drivers/misc/c2port/Kconfig"
502
491endif # MISC_DEVICES 503endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 909e2468cdc9..817f7f5ab3bd 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
14obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o 14obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
15obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o 15obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
16obj-$(CONFIG_HP_WMI) += hp-wmi.o 16obj-$(CONFIG_HP_WMI) += hp-wmi.o
17obj-$(CONFIG_ICS932S401) += ics932s401.o
17obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o 18obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
18obj-$(CONFIG_LKDTM) += lkdtm.o 19obj-$(CONFIG_LKDTM) += lkdtm.o
19obj-$(CONFIG_TIFM_CORE) += tifm_core.o 20obj-$(CONFIG_TIFM_CORE) += tifm_core.o
@@ -31,3 +32,4 @@ obj-$(CONFIG_KGDB_TESTS) += kgdbts.o
31obj-$(CONFIG_SGI_XP) += sgi-xp/ 32obj-$(CONFIG_SGI_XP) += sgi-xp/
32obj-$(CONFIG_SGI_GRU) += sgi-gru/ 33obj-$(CONFIG_SGI_GRU) += sgi-gru/
33obj-$(CONFIG_HP_ILO) += hpilo.o 34obj-$(CONFIG_HP_ILO) += hpilo.o
35obj-$(CONFIG_C2PORT) += c2port/
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index 0532a2de2ce4..94c9f911824e 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -1297,6 +1297,12 @@ static int __init acer_wmi_init(void)
1297 1297
1298 set_quirks(); 1298 set_quirks();
1299 1299
1300 if (!acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1301 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1302 printk(ACER_INFO "Brightness must be controlled by "
1303 "generic video driver\n");
1304 }
1305
1300 if (platform_driver_register(&acer_platform_driver)) { 1306 if (platform_driver_register(&acer_platform_driver)) {
1301 printk(ACER_ERR "Unable to register platform driver.\n"); 1307 printk(ACER_ERR "Unable to register platform driver.\n");
1302 goto error_platform_register; 1308 goto error_platform_register;
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index a9d5228724a6..8fb8b3591048 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -1208,9 +1208,13 @@ static int __init asus_laptop_init(void)
1208 1208
1209 dev = acpi_get_physical_device(hotk->device->handle); 1209 dev = acpi_get_physical_device(hotk->device->handle);
1210 1210
1211 result = asus_backlight_init(dev); 1211 if (!acpi_video_backlight_support()) {
1212 if (result) 1212 result = asus_backlight_init(dev);
1213 goto fail_backlight; 1213 if (result)
1214 goto fail_backlight;
1215 } else
1216 printk(ASUS_INFO "Brightness ignored, must be controlled by "
1217 "ACPI video driver\n");
1214 1218
1215 result = asus_led_init(dev); 1219 result = asus_led_init(dev);
1216 if (result) 1220 if (result)
diff --git a/drivers/misc/c2port/Kconfig b/drivers/misc/c2port/Kconfig
new file mode 100644
index 000000000000..e46af9a5810d
--- /dev/null
+++ b/drivers/misc/c2port/Kconfig
@@ -0,0 +1,35 @@
1#
2# C2 port devices
3#
4
5menuconfig C2PORT
6 tristate "Silicon Labs C2 port support (EXPERIMENTAL)"
7 depends on EXPERIMENTAL
8 default no
9 help
10 This option enables support for Silicon Labs C2 port used to
11 program Silicon micro controller chips (and other 8051 compatible).
12
13 If your board have no such micro controllers you don't need this
14 interface at all.
15
16 To compile this driver as a module, choose M here: the module will
17 be called c2port_core. Note that you also need a client module
18 usually called c2port-*.
19
20 If you are not sure, say N here.
21
22if C2PORT
23
24config C2PORT_DURAMAR_2150
25 tristate "C2 port support for Eurotech's Duramar 2150 (EXPERIMENTAL)"
26 depends on X86 && C2PORT
27 default no
28 help
29 This option enables C2 support for the Eurotech's Duramar 2150
30 on board micro controller.
31
32 To compile this driver as a module, choose M here: the module will
33 be called c2port-duramar2150.
34
35endif # C2PORT
diff --git a/drivers/misc/c2port/Makefile b/drivers/misc/c2port/Makefile
new file mode 100644
index 000000000000..3b2cf43d60f5
--- /dev/null
+++ b/drivers/misc/c2port/Makefile
@@ -0,0 +1,3 @@
1obj-$(CONFIG_C2PORT) += core.o
2
3obj-$(CONFIG_C2PORT_DURAMAR_2150) += c2port-duramar2150.o
diff --git a/drivers/misc/c2port/c2port-duramar2150.c b/drivers/misc/c2port/c2port-duramar2150.c
new file mode 100644
index 000000000000..338dcc121507
--- /dev/null
+++ b/drivers/misc/c2port/c2port-duramar2150.c
@@ -0,0 +1,158 @@
1/*
2 * Silicon Labs C2 port Linux support for Eurotech Duramar 2150
3 *
4 * Copyright (c) 2008 Rodolfo Giometti <giometti@linux.it>
5 * Copyright (c) 2008 Eurotech S.p.A. <info@eurotech.it>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation
10 */
11
12#include <linux/errno.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/delay.h>
17#include <linux/io.h>
18#include <linux/c2port.h>
19
20#define DATA_PORT 0x325
21#define DIR_PORT 0x326
22#define C2D (1 << 0)
23#define C2CK (1 << 1)
24
25static DEFINE_MUTEX(update_lock);
26
27/*
28 * C2 port operations
29 */
30
31static void duramar2150_c2port_access(struct c2port_device *dev, int status)
32{
33 u8 v;
34
35 mutex_lock(&update_lock);
36
37 v = inb(DIR_PORT);
38
39 /* 0 = input, 1 = output */
40 if (status)
41 outb(v | (C2D | C2CK), DIR_PORT);
42 else
43 /* When access is "off" is important that both lines are set
44 * as inputs or hi-impedence */
45 outb(v & ~(C2D | C2CK), DIR_PORT);
46
47 mutex_unlock(&update_lock);
48}
49
50static void duramar2150_c2port_c2d_dir(struct c2port_device *dev, int dir)
51{
52 u8 v;
53
54 mutex_lock(&update_lock);
55
56 v = inb(DIR_PORT);
57
58 if (dir)
59 outb(v & ~C2D, DIR_PORT);
60 else
61 outb(v | C2D, DIR_PORT);
62
63 mutex_unlock(&update_lock);
64}
65
66static int duramar2150_c2port_c2d_get(struct c2port_device *dev)
67{
68 return inb(DATA_PORT) & C2D;
69}
70
71static void duramar2150_c2port_c2d_set(struct c2port_device *dev, int status)
72{
73 u8 v;
74
75 mutex_lock(&update_lock);
76
77 v = inb(DATA_PORT);
78
79 if (status)
80 outb(v | C2D, DATA_PORT);
81 else
82 outb(v & ~C2D, DATA_PORT);
83
84 mutex_unlock(&update_lock);
85}
86
87static void duramar2150_c2port_c2ck_set(struct c2port_device *dev, int status)
88{
89 u8 v;
90
91 mutex_lock(&update_lock);
92
93 v = inb(DATA_PORT);
94
95 if (status)
96 outb(v | C2CK, DATA_PORT);
97 else
98 outb(v & ~C2CK, DATA_PORT);
99
100 mutex_unlock(&update_lock);
101}
102
103static struct c2port_ops duramar2150_c2port_ops = {
104 .block_size = 512, /* bytes */
105 .blocks_num = 30, /* total flash size: 15360 bytes */
106
107 .access = duramar2150_c2port_access,
108 .c2d_dir = duramar2150_c2port_c2d_dir,
109 .c2d_get = duramar2150_c2port_c2d_get,
110 .c2d_set = duramar2150_c2port_c2d_set,
111 .c2ck_set = duramar2150_c2port_c2ck_set,
112};
113
114static struct c2port_device *duramar2150_c2port_dev;
115
116/*
117 * Module stuff
118 */
119
120static int __init duramar2150_c2port_init(void)
121{
122 struct resource *res;
123 int ret = 0;
124
125 res = request_region(0x325, 2, "c2port");
126 if (!res)
127 return -EBUSY;
128
129 duramar2150_c2port_dev = c2port_device_register("uc",
130 &duramar2150_c2port_ops, NULL);
131 if (!duramar2150_c2port_dev) {
132 ret = -ENODEV;
133 goto free_region;
134 }
135
136 return 0;
137
138free_region:
139 release_region(0x325, 2);
140 return ret;
141}
142
143static void __exit duramar2150_c2port_exit(void)
144{
145 /* Setup the GPIOs as input by default (access = 0) */
146 duramar2150_c2port_access(duramar2150_c2port_dev, 0);
147
148 c2port_device_unregister(duramar2150_c2port_dev);
149
150 release_region(0x325, 2);
151}
152
153module_init(duramar2150_c2port_init);
154module_exit(duramar2150_c2port_exit);
155
156MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
157MODULE_DESCRIPTION("Silicon Labs C2 port Linux support for Duramar 2150");
158MODULE_LICENSE("GPL");
diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
new file mode 100644
index 000000000000..0207dd59090d
--- /dev/null
+++ b/drivers/misc/c2port/core.c
@@ -0,0 +1,1003 @@
1/*
2 * Silicon Labs C2 port core Linux support
3 *
4 * Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
5 * Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation
10 */
11
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/device.h>
15#include <linux/errno.h>
16#include <linux/err.h>
17#include <linux/kernel.h>
18#include <linux/ctype.h>
19#include <linux/delay.h>
20#include <linux/idr.h>
21#include <linux/sched.h>
22
23#include <linux/c2port.h>
24
25#define DRIVER_NAME "c2port"
26#define DRIVER_VERSION "0.51.0"
27
28static DEFINE_SPINLOCK(c2port_idr_lock);
29static DEFINE_IDR(c2port_idr);
30
31/*
32 * Local variables
33 */
34
35static struct class *c2port_class;
36
37/*
38 * C2 registers & commands defines
39 */
40
41/* C2 registers */
42#define C2PORT_DEVICEID 0x00
43#define C2PORT_REVID 0x01
44#define C2PORT_FPCTL 0x02
45#define C2PORT_FPDAT 0xB4
46
47/* C2 interface commands */
48#define C2PORT_GET_VERSION 0x01
49#define C2PORT_DEVICE_ERASE 0x03
50#define C2PORT_BLOCK_READ 0x06
51#define C2PORT_BLOCK_WRITE 0x07
52#define C2PORT_PAGE_ERASE 0x08
53
54/* C2 status return codes */
55#define C2PORT_INVALID_COMMAND 0x00
56#define C2PORT_COMMAND_FAILED 0x02
57#define C2PORT_COMMAND_OK 0x0d
58
59/*
60 * C2 port low level signal managements
61 */
62
63static void c2port_reset(struct c2port_device *dev)
64{
65 struct c2port_ops *ops = dev->ops;
66
67 /* To reset the device we have to keep clock line low for at least
68 * 20us.
69 */
70 local_irq_disable();
71 ops->c2ck_set(dev, 0);
72 udelay(25);
73 ops->c2ck_set(dev, 1);
74 local_irq_enable();
75
76 udelay(1);
77}
78
79static void c2port_strobe_ck(struct c2port_device *dev)
80{
81 struct c2port_ops *ops = dev->ops;
82
83 /* During hi-low-hi transition we disable local IRQs to avoid
84 * interructions since C2 port specification says that it must be
85 * shorter than 5us, otherwise the microcontroller may consider
86 * it as a reset signal!
87 */
88 local_irq_disable();
89 ops->c2ck_set(dev, 0);
90 udelay(1);
91 ops->c2ck_set(dev, 1);
92 local_irq_enable();
93
94 udelay(1);
95}
96
97/*
98 * C2 port basic functions
99 */
100
101static void c2port_write_ar(struct c2port_device *dev, u8 addr)
102{
103 struct c2port_ops *ops = dev->ops;
104 int i;
105
106 /* START field */
107 c2port_strobe_ck(dev);
108
109 /* INS field (11b, LSB first) */
110 ops->c2d_dir(dev, 0);
111 ops->c2d_set(dev, 1);
112 c2port_strobe_ck(dev);
113 ops->c2d_set(dev, 1);
114 c2port_strobe_ck(dev);
115
116 /* ADDRESS field */
117 for (i = 0; i < 8; i++) {
118 ops->c2d_set(dev, addr & 0x01);
119 c2port_strobe_ck(dev);
120
121 addr >>= 1;
122 }
123
124 /* STOP field */
125 ops->c2d_dir(dev, 1);
126 c2port_strobe_ck(dev);
127}
128
129static int c2port_read_ar(struct c2port_device *dev, u8 *addr)
130{
131 struct c2port_ops *ops = dev->ops;
132 int i;
133
134 /* START field */
135 c2port_strobe_ck(dev);
136
137 /* INS field (10b, LSB first) */
138 ops->c2d_dir(dev, 0);
139 ops->c2d_set(dev, 0);
140 c2port_strobe_ck(dev);
141 ops->c2d_set(dev, 1);
142 c2port_strobe_ck(dev);
143
144 /* ADDRESS field */
145 ops->c2d_dir(dev, 1);
146 *addr = 0;
147 for (i = 0; i < 8; i++) {
148 *addr >>= 1; /* shift in 8-bit ADDRESS field LSB first */
149
150 c2port_strobe_ck(dev);
151 if (ops->c2d_get(dev))
152 *addr |= 0x80;
153 }
154
155 /* STOP field */
156 c2port_strobe_ck(dev);
157
158 return 0;
159}
160
161static int c2port_write_dr(struct c2port_device *dev, u8 data)
162{
163 struct c2port_ops *ops = dev->ops;
164 int timeout, i;
165
166 /* START field */
167 c2port_strobe_ck(dev);
168
169 /* INS field (01b, LSB first) */
170 ops->c2d_dir(dev, 0);
171 ops->c2d_set(dev, 1);
172 c2port_strobe_ck(dev);
173 ops->c2d_set(dev, 0);
174 c2port_strobe_ck(dev);
175
176 /* LENGTH field (00b, LSB first -> 1 byte) */
177 ops->c2d_set(dev, 0);
178 c2port_strobe_ck(dev);
179 ops->c2d_set(dev, 0);
180 c2port_strobe_ck(dev);
181
182 /* DATA field */
183 for (i = 0; i < 8; i++) {
184 ops->c2d_set(dev, data & 0x01);
185 c2port_strobe_ck(dev);
186
187 data >>= 1;
188 }
189
190 /* WAIT field */
191 ops->c2d_dir(dev, 1);
192 timeout = 20;
193 do {
194 c2port_strobe_ck(dev);
195 if (ops->c2d_get(dev))
196 break;
197
198 udelay(1);
199 } while (--timeout > 0);
200 if (timeout == 0)
201 return -EIO;
202
203 /* STOP field */
204 c2port_strobe_ck(dev);
205
206 return 0;
207}
208
209static int c2port_read_dr(struct c2port_device *dev, u8 *data)
210{
211 struct c2port_ops *ops = dev->ops;
212 int timeout, i;
213
214 /* START field */
215 c2port_strobe_ck(dev);
216
217 /* INS field (00b, LSB first) */
218 ops->c2d_dir(dev, 0);
219 ops->c2d_set(dev, 0);
220 c2port_strobe_ck(dev);
221 ops->c2d_set(dev, 0);
222 c2port_strobe_ck(dev);
223
224 /* LENGTH field (00b, LSB first -> 1 byte) */
225 ops->c2d_set(dev, 0);
226 c2port_strobe_ck(dev);
227 ops->c2d_set(dev, 0);
228 c2port_strobe_ck(dev);
229
230 /* WAIT field */
231 ops->c2d_dir(dev, 1);
232 timeout = 20;
233 do {
234 c2port_strobe_ck(dev);
235 if (ops->c2d_get(dev))
236 break;
237
238 udelay(1);
239 } while (--timeout > 0);
240 if (timeout == 0)
241 return -EIO;
242
243 /* DATA field */
244 *data = 0;
245 for (i = 0; i < 8; i++) {
246 *data >>= 1; /* shift in 8-bit DATA field LSB first */
247
248 c2port_strobe_ck(dev);
249 if (ops->c2d_get(dev))
250 *data |= 0x80;
251 }
252
253 /* STOP field */
254 c2port_strobe_ck(dev);
255
256 return 0;
257}
258
259static int c2port_poll_in_busy(struct c2port_device *dev)
260{
261 u8 addr;
262 int ret, timeout = 20;
263
264 do {
265 ret = (c2port_read_ar(dev, &addr));
266 if (ret < 0)
267 return -EIO;
268
269 if (!(addr & 0x02))
270 break;
271
272 udelay(1);
273 } while (--timeout > 0);
274 if (timeout == 0)
275 return -EIO;
276
277 return 0;
278}
279
280static int c2port_poll_out_ready(struct c2port_device *dev)
281{
282 u8 addr;
283 int ret, timeout = 10000; /* erase flash needs long time... */
284
285 do {
286 ret = (c2port_read_ar(dev, &addr));
287 if (ret < 0)
288 return -EIO;
289
290 if (addr & 0x01)
291 break;
292
293 udelay(1);
294 } while (--timeout > 0);
295 if (timeout == 0)
296 return -EIO;
297
298 return 0;
299}
300
301/*
302 * sysfs methods
303 */
304
305static ssize_t c2port_show_name(struct device *dev,
306 struct device_attribute *attr, char *buf)
307{
308 struct c2port_device *c2dev = dev_get_drvdata(dev);
309
310 return sprintf(buf, "%s\n", c2dev->name);
311}
312
313static ssize_t c2port_show_flash_blocks_num(struct device *dev,
314 struct device_attribute *attr, char *buf)
315{
316 struct c2port_device *c2dev = dev_get_drvdata(dev);
317 struct c2port_ops *ops = c2dev->ops;
318
319 return sprintf(buf, "%d\n", ops->blocks_num);
320}
321
322static ssize_t c2port_show_flash_block_size(struct device *dev,
323 struct device_attribute *attr, char *buf)
324{
325 struct c2port_device *c2dev = dev_get_drvdata(dev);
326 struct c2port_ops *ops = c2dev->ops;
327
328 return sprintf(buf, "%d\n", ops->block_size);
329}
330
331static ssize_t c2port_show_flash_size(struct device *dev,
332 struct device_attribute *attr, char *buf)
333{
334 struct c2port_device *c2dev = dev_get_drvdata(dev);
335 struct c2port_ops *ops = c2dev->ops;
336
337 return sprintf(buf, "%d\n", ops->blocks_num * ops->block_size);
338}
339
340static ssize_t c2port_show_access(struct device *dev,
341 struct device_attribute *attr, char *buf)
342{
343 struct c2port_device *c2dev = dev_get_drvdata(dev);
344
345 return sprintf(buf, "%d\n", c2dev->access);
346}
347
348static ssize_t c2port_store_access(struct device *dev,
349 struct device_attribute *attr,
350 const char *buf, size_t count)
351{
352 struct c2port_device *c2dev = dev_get_drvdata(dev);
353 struct c2port_ops *ops = c2dev->ops;
354 int status, ret;
355
356 ret = sscanf(buf, "%d", &status);
357 if (ret != 1)
358 return -EINVAL;
359
360 mutex_lock(&c2dev->mutex);
361
362 c2dev->access = !!status;
363
364 /* If access is "on" clock should be HIGH _before_ setting the line
365 * as output and data line should be set as INPUT anyway */
366 if (c2dev->access)
367 ops->c2ck_set(c2dev, 1);
368 ops->access(c2dev, c2dev->access);
369 if (c2dev->access)
370 ops->c2d_dir(c2dev, 1);
371
372 mutex_unlock(&c2dev->mutex);
373
374 return count;
375}
376
377static ssize_t c2port_store_reset(struct device *dev,
378 struct device_attribute *attr,
379 const char *buf, size_t count)
380{
381 struct c2port_device *c2dev = dev_get_drvdata(dev);
382
383 /* Check the device access status */
384 if (!c2dev->access)
385 return -EBUSY;
386
387 mutex_lock(&c2dev->mutex);
388
389 c2port_reset(c2dev);
390 c2dev->flash_access = 0;
391
392 mutex_unlock(&c2dev->mutex);
393
394 return count;
395}
396
397static ssize_t __c2port_show_dev_id(struct c2port_device *dev, char *buf)
398{
399 u8 data;
400 int ret;
401
402 /* Select DEVICEID register for C2 data register accesses */
403 c2port_write_ar(dev, C2PORT_DEVICEID);
404
405 /* Read and return the device ID register */
406 ret = c2port_read_dr(dev, &data);
407 if (ret < 0)
408 return ret;
409
410 return sprintf(buf, "%d\n", data);
411}
412
413static ssize_t c2port_show_dev_id(struct device *dev,
414 struct device_attribute *attr, char *buf)
415{
416 struct c2port_device *c2dev = dev_get_drvdata(dev);
417 ssize_t ret;
418
419 /* Check the device access status */
420 if (!c2dev->access)
421 return -EBUSY;
422
423 mutex_lock(&c2dev->mutex);
424 ret = __c2port_show_dev_id(c2dev, buf);
425 mutex_unlock(&c2dev->mutex);
426
427 if (ret < 0)
428 dev_err(dev, "cannot read from %s\n", c2dev->name);
429
430 return ret;
431}
432
433static ssize_t __c2port_show_rev_id(struct c2port_device *dev, char *buf)
434{
435 u8 data;
436 int ret;
437
438 /* Select REVID register for C2 data register accesses */
439 c2port_write_ar(dev, C2PORT_REVID);
440
441 /* Read and return the revision ID register */
442 ret = c2port_read_dr(dev, &data);
443 if (ret < 0)
444 return ret;
445
446 return sprintf(buf, "%d\n", data);
447}
448
449static ssize_t c2port_show_rev_id(struct device *dev,
450 struct device_attribute *attr, char *buf)
451{
452 struct c2port_device *c2dev = dev_get_drvdata(dev);
453 ssize_t ret;
454
455 /* Check the device access status */
456 if (!c2dev->access)
457 return -EBUSY;
458
459 mutex_lock(&c2dev->mutex);
460 ret = __c2port_show_rev_id(c2dev, buf);
461 mutex_unlock(&c2dev->mutex);
462
463 if (ret < 0)
464 dev_err(c2dev->dev, "cannot read from %s\n", c2dev->name);
465
466 return ret;
467}
468
469static ssize_t c2port_show_flash_access(struct device *dev,
470 struct device_attribute *attr, char *buf)
471{
472 struct c2port_device *c2dev = dev_get_drvdata(dev);
473
474 return sprintf(buf, "%d\n", c2dev->flash_access);
475}
476
477static ssize_t __c2port_store_flash_access(struct c2port_device *dev,
478 int status)
479{
480 int ret;
481
482 /* Check the device access status */
483 if (!dev->access)
484 return -EBUSY;
485
486 dev->flash_access = !!status;
487
488 /* If flash_access is off we have nothing to do... */
489 if (dev->flash_access == 0)
490 return 0;
491
492 /* Target the C2 flash programming control register for C2 data
493 * register access */
494 c2port_write_ar(dev, C2PORT_FPCTL);
495
496 /* Write the first keycode to enable C2 Flash programming */
497 ret = c2port_write_dr(dev, 0x02);
498 if (ret < 0)
499 return ret;
500
501 /* Write the second keycode to enable C2 Flash programming */
502 ret = c2port_write_dr(dev, 0x01);
503 if (ret < 0)
504 return ret;
505
506 /* Delay for at least 20ms to ensure the target is ready for
507 * C2 flash programming */
508 mdelay(25);
509
510 return 0;
511}
512
513static ssize_t c2port_store_flash_access(struct device *dev,
514 struct device_attribute *attr,
515 const char *buf, size_t count)
516{
517 struct c2port_device *c2dev = dev_get_drvdata(dev);
518 int status;
519 ssize_t ret;
520
521 ret = sscanf(buf, "%d", &status);
522 if (ret != 1)
523 return -EINVAL;
524
525 mutex_lock(&c2dev->mutex);
526 ret = __c2port_store_flash_access(c2dev, status);
527 mutex_unlock(&c2dev->mutex);
528
529 if (ret < 0) {
530 dev_err(c2dev->dev, "cannot enable %s flash programming\n",
531 c2dev->name);
532 return ret;
533 }
534
535 return count;
536}
537
538static ssize_t __c2port_write_flash_erase(struct c2port_device *dev)
539{
540 u8 status;
541 int ret;
542
543 /* Target the C2 flash programming data register for C2 data register
544 * access.
545 */
546 c2port_write_ar(dev, C2PORT_FPDAT);
547
548 /* Send device erase command */
549 c2port_write_dr(dev, C2PORT_DEVICE_ERASE);
550
551 /* Wait for input acknowledge */
552 ret = c2port_poll_in_busy(dev);
553 if (ret < 0)
554 return ret;
555
556 /* Should check status before starting FLASH access sequence */
557
558 /* Wait for status information */
559 ret = c2port_poll_out_ready(dev);
560 if (ret < 0)
561 return ret;
562
563 /* Read flash programming interface status */
564 ret = c2port_read_dr(dev, &status);
565 if (ret < 0)
566 return ret;
567 if (status != C2PORT_COMMAND_OK)
568 return -EBUSY;
569
570 /* Send a three-byte arming sequence to enable the device erase.
571 * If the sequence is not received correctly, the command will be
572 * ignored.
573 * Sequence is: 0xde, 0xad, 0xa5.
574 */
575 c2port_write_dr(dev, 0xde);
576 ret = c2port_poll_in_busy(dev);
577 if (ret < 0)
578 return ret;
579 c2port_write_dr(dev, 0xad);
580 ret = c2port_poll_in_busy(dev);
581 if (ret < 0)
582 return ret;
583 c2port_write_dr(dev, 0xa5);
584 ret = c2port_poll_in_busy(dev);
585 if (ret < 0)
586 return ret;
587
588 ret = c2port_poll_out_ready(dev);
589 if (ret < 0)
590 return ret;
591
592 return 0;
593}
594
595static ssize_t c2port_store_flash_erase(struct device *dev,
596 struct device_attribute *attr,
597 const char *buf, size_t count)
598{
599 struct c2port_device *c2dev = dev_get_drvdata(dev);
600 int ret;
601
602 /* Check the device and flash access status */
603 if (!c2dev->access || !c2dev->flash_access)
604 return -EBUSY;
605
606 mutex_lock(&c2dev->mutex);
607 ret = __c2port_write_flash_erase(c2dev);
608 mutex_unlock(&c2dev->mutex);
609
610 if (ret < 0) {
611 dev_err(c2dev->dev, "cannot erase %s flash\n", c2dev->name);
612 return ret;
613 }
614
615 return count;
616}
617
618static ssize_t __c2port_read_flash_data(struct c2port_device *dev,
619 char *buffer, loff_t offset, size_t count)
620{
621 struct c2port_ops *ops = dev->ops;
622 u8 status, nread = 128;
623 int i, ret;
624
625 /* Check for flash end */
626 if (offset >= ops->block_size * ops->blocks_num)
627 return 0;
628
629 if (ops->block_size * ops->blocks_num - offset < nread)
630 nread = ops->block_size * ops->blocks_num - offset;
631 if (count < nread)
632 nread = count;
633 if (nread == 0)
634 return nread;
635
636 /* Target the C2 flash programming data register for C2 data register
637 * access */
638 c2port_write_ar(dev, C2PORT_FPDAT);
639
640 /* Send flash block read command */
641 c2port_write_dr(dev, C2PORT_BLOCK_READ);
642
643 /* Wait for input acknowledge */
644 ret = c2port_poll_in_busy(dev);
645 if (ret < 0)
646 return ret;
647
648 /* Should check status before starting FLASH access sequence */
649
650 /* Wait for status information */
651 ret = c2port_poll_out_ready(dev);
652 if (ret < 0)
653 return ret;
654
655 /* Read flash programming interface status */
656 ret = c2port_read_dr(dev, &status);
657 if (ret < 0)
658 return ret;
659 if (status != C2PORT_COMMAND_OK)
660 return -EBUSY;
661
662 /* Send address high byte */
663 c2port_write_dr(dev, offset >> 8);
664 ret = c2port_poll_in_busy(dev);
665 if (ret < 0)
666 return ret;
667
668 /* Send address low byte */
669 c2port_write_dr(dev, offset & 0x00ff);
670 ret = c2port_poll_in_busy(dev);
671 if (ret < 0)
672 return ret;
673
674 /* Send address block size */
675 c2port_write_dr(dev, nread);
676 ret = c2port_poll_in_busy(dev);
677 if (ret < 0)
678 return ret;
679
680 /* Should check status before reading FLASH block */
681
682 /* Wait for status information */
683 ret = c2port_poll_out_ready(dev);
684 if (ret < 0)
685 return ret;
686
687 /* Read flash programming interface status */
688 ret = c2port_read_dr(dev, &status);
689 if (ret < 0)
690 return ret;
691 if (status != C2PORT_COMMAND_OK)
692 return -EBUSY;
693
694 /* Read flash block */
695 for (i = 0; i < nread; i++) {
696 ret = c2port_poll_out_ready(dev);
697 if (ret < 0)
698 return ret;
699
700 ret = c2port_read_dr(dev, buffer+i);
701 if (ret < 0)
702 return ret;
703 }
704
705 return nread;
706}
707
708static ssize_t c2port_read_flash_data(struct kobject *kobj,
709 struct bin_attribute *attr,
710 char *buffer, loff_t offset, size_t count)
711{
712 struct c2port_device *c2dev =
713 dev_get_drvdata(container_of(kobj,
714 struct device, kobj));
715 ssize_t ret;
716
717 /* Check the device and flash access status */
718 if (!c2dev->access || !c2dev->flash_access)
719 return -EBUSY;
720
721 mutex_lock(&c2dev->mutex);
722 ret = __c2port_read_flash_data(c2dev, buffer, offset, count);
723 mutex_unlock(&c2dev->mutex);
724
725 if (ret < 0)
726 dev_err(c2dev->dev, "cannot read %s flash\n", c2dev->name);
727
728 return ret;
729}
730
731static ssize_t __c2port_write_flash_data(struct c2port_device *dev,
732 char *buffer, loff_t offset, size_t count)
733{
734 struct c2port_ops *ops = dev->ops;
735 u8 status, nwrite = 128;
736 int i, ret;
737
738 if (nwrite > count)
739 nwrite = count;
740 if (ops->block_size * ops->blocks_num - offset < nwrite)
741 nwrite = ops->block_size * ops->blocks_num - offset;
742
743 /* Check for flash end */
744 if (offset >= ops->block_size * ops->blocks_num)
745 return -EINVAL;
746
747 /* Target the C2 flash programming data register for C2 data register
748 * access */
749 c2port_write_ar(dev, C2PORT_FPDAT);
750
751 /* Send flash block write command */
752 c2port_write_dr(dev, C2PORT_BLOCK_WRITE);
753
754 /* Wait for input acknowledge */
755 ret = c2port_poll_in_busy(dev);
756 if (ret < 0)
757 return ret;
758
759 /* Should check status before starting FLASH access sequence */
760
761 /* Wait for status information */
762 ret = c2port_poll_out_ready(dev);
763 if (ret < 0)
764 return ret;
765
766 /* Read flash programming interface status */
767 ret = c2port_read_dr(dev, &status);
768 if (ret < 0)
769 return ret;
770 if (status != C2PORT_COMMAND_OK)
771 return -EBUSY;
772
773 /* Send address high byte */
774 c2port_write_dr(dev, offset >> 8);
775 ret = c2port_poll_in_busy(dev);
776 if (ret < 0)
777 return ret;
778
779 /* Send address low byte */
780 c2port_write_dr(dev, offset & 0x00ff);
781 ret = c2port_poll_in_busy(dev);
782 if (ret < 0)
783 return ret;
784
785 /* Send address block size */
786 c2port_write_dr(dev, nwrite);
787 ret = c2port_poll_in_busy(dev);
788 if (ret < 0)
789 return ret;
790
791 /* Should check status before writing FLASH block */
792
793 /* Wait for status information */
794 ret = c2port_poll_out_ready(dev);
795 if (ret < 0)
796 return ret;
797
798 /* Read flash programming interface status */
799 ret = c2port_read_dr(dev, &status);
800 if (ret < 0)
801 return ret;
802 if (status != C2PORT_COMMAND_OK)
803 return -EBUSY;
804
805 /* Write flash block */
806 for (i = 0; i < nwrite; i++) {
807 ret = c2port_write_dr(dev, *(buffer+i));
808 if (ret < 0)
809 return ret;
810
811 ret = c2port_poll_in_busy(dev);
812 if (ret < 0)
813 return ret;
814
815 }
816
817 /* Wait for last flash write to complete */
818 ret = c2port_poll_out_ready(dev);
819 if (ret < 0)
820 return ret;
821
822 return nwrite;
823}
824
825static ssize_t c2port_write_flash_data(struct kobject *kobj,
826 struct bin_attribute *attr,
827 char *buffer, loff_t offset, size_t count)
828{
829 struct c2port_device *c2dev =
830 dev_get_drvdata(container_of(kobj,
831 struct device, kobj));
832 int ret;
833
834 /* Check the device access status */
835 if (!c2dev->access || !c2dev->flash_access)
836 return -EBUSY;
837
838 mutex_lock(&c2dev->mutex);
839 ret = __c2port_write_flash_data(c2dev, buffer, offset, count);
840 mutex_unlock(&c2dev->mutex);
841
842 if (ret < 0)
843 dev_err(c2dev->dev, "cannot write %s flash\n", c2dev->name);
844
845 return ret;
846}
847
848/*
849 * Class attributes
850 */
851
852static struct device_attribute c2port_attrs[] = {
853 __ATTR(name, 0444, c2port_show_name, NULL),
854 __ATTR(flash_blocks_num, 0444, c2port_show_flash_blocks_num, NULL),
855 __ATTR(flash_block_size, 0444, c2port_show_flash_block_size, NULL),
856 __ATTR(flash_size, 0444, c2port_show_flash_size, NULL),
857 __ATTR(access, 0644, c2port_show_access, c2port_store_access),
858 __ATTR(reset, 0200, NULL, c2port_store_reset),
859 __ATTR(dev_id, 0444, c2port_show_dev_id, NULL),
860 __ATTR(rev_id, 0444, c2port_show_rev_id, NULL),
861
862 __ATTR(flash_access, 0644, c2port_show_flash_access,
863 c2port_store_flash_access),
864 __ATTR(flash_erase, 0200, NULL, c2port_store_flash_erase),
865 __ATTR_NULL,
866};
867
868static struct bin_attribute c2port_bin_attrs = {
869 .attr = {
870 .name = "flash_data",
871 .mode = 0644
872 },
873 .read = c2port_read_flash_data,
874 .write = c2port_write_flash_data,
875 /* .size is computed at run-time */
876};
877
878/*
879 * Exported functions
880 */
881
882struct c2port_device *c2port_device_register(char *name,
883 struct c2port_ops *ops, void *devdata)
884{
885 struct c2port_device *c2dev;
886 int id, ret;
887
888 if (unlikely(!ops) || unlikely(!ops->access) || \
889 unlikely(!ops->c2d_dir) || unlikely(!ops->c2ck_set) || \
890 unlikely(!ops->c2d_get) || unlikely(!ops->c2d_set))
891 return ERR_PTR(-EINVAL);
892
893 c2dev = kmalloc(sizeof(struct c2port_device), GFP_KERNEL);
894 if (unlikely(!c2dev))
895 return ERR_PTR(-ENOMEM);
896
897 ret = idr_pre_get(&c2port_idr, GFP_KERNEL);
898 if (!ret) {
899 ret = -ENOMEM;
900 goto error_idr_get_new;
901 }
902
903 spin_lock_irq(&c2port_idr_lock);
904 ret = idr_get_new(&c2port_idr, c2dev, &id);
905 spin_unlock_irq(&c2port_idr_lock);
906
907 if (ret < 0)
908 goto error_idr_get_new;
909 c2dev->id = id;
910
911 c2dev->dev = device_create(c2port_class, NULL, 0, c2dev,
912 "c2port%d", id);
913 if (unlikely(!c2dev->dev)) {
914 ret = -ENOMEM;
915 goto error_device_create;
916 }
917 dev_set_drvdata(c2dev->dev, c2dev);
918
919 strncpy(c2dev->name, name, C2PORT_NAME_LEN);
920 c2dev->ops = ops;
921 mutex_init(&c2dev->mutex);
922
923 /* Create binary file */
924 c2port_bin_attrs.size = ops->blocks_num * ops->block_size;
925 ret = device_create_bin_file(c2dev->dev, &c2port_bin_attrs);
926 if (unlikely(ret))
927 goto error_device_create_bin_file;
928
929 /* By default C2 port access is off */
930 c2dev->access = c2dev->flash_access = 0;
931 ops->access(c2dev, 0);
932
933 dev_info(c2dev->dev, "C2 port %s added\n", name);
934 dev_info(c2dev->dev, "%s flash has %d blocks x %d bytes "
935 "(%d bytes total)\n",
936 name, ops->blocks_num, ops->block_size,
937 ops->blocks_num * ops->block_size);
938
939 return c2dev;
940
941error_device_create_bin_file:
942 device_destroy(c2port_class, 0);
943
944error_device_create:
945 spin_lock_irq(&c2port_idr_lock);
946 idr_remove(&c2port_idr, id);
947 spin_unlock_irq(&c2port_idr_lock);
948
949error_idr_get_new:
950 kfree(c2dev);
951
952 return ERR_PTR(ret);
953}
954EXPORT_SYMBOL(c2port_device_register);
955
956void c2port_device_unregister(struct c2port_device *c2dev)
957{
958 if (!c2dev)
959 return;
960
961 dev_info(c2dev->dev, "C2 port %s removed\n", c2dev->name);
962
963 device_remove_bin_file(c2dev->dev, &c2port_bin_attrs);
964 spin_lock_irq(&c2port_idr_lock);
965 idr_remove(&c2port_idr, c2dev->id);
966 spin_unlock_irq(&c2port_idr_lock);
967
968 device_destroy(c2port_class, c2dev->id);
969
970 kfree(c2dev);
971}
972EXPORT_SYMBOL(c2port_device_unregister);
973
974/*
975 * Module stuff
976 */
977
978static int __init c2port_init(void)
979{
980 printk(KERN_INFO "Silicon Labs C2 port support v. " DRIVER_VERSION
981 " - (C) 2007 Rodolfo Giometti\n");
982
983 c2port_class = class_create(THIS_MODULE, "c2port");
984 if (!c2port_class) {
985 printk(KERN_ERR "c2port: failed to allocate class\n");
986 return -ENOMEM;
987 }
988 c2port_class->dev_attrs = c2port_attrs;
989
990 return 0;
991}
992
993static void __exit c2port_exit(void)
994{
995 class_destroy(c2port_class);
996}
997
998module_init(c2port_init);
999module_exit(c2port_exit);
1000
1001MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
1002MODULE_DESCRIPTION("Silicon Labs C2 port support v. " DRIVER_VERSION);
1003MODULE_LICENSE("GPL");
diff --git a/drivers/misc/compal-laptop.c b/drivers/misc/compal-laptop.c
index 344b790a6253..11003bba10d3 100644
--- a/drivers/misc/compal-laptop.c
+++ b/drivers/misc/compal-laptop.c
@@ -326,12 +326,14 @@ static int __init compal_init(void)
326 326
327 /* Register backlight stuff */ 327 /* Register backlight stuff */
328 328
329 compalbl_device = backlight_device_register("compal-laptop", NULL, NULL, 329 if (!acpi_video_backlight_support()) {
330 &compalbl_ops); 330 compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
331 if (IS_ERR(compalbl_device)) 331 &compalbl_ops);
332 return PTR_ERR(compalbl_device); 332 if (IS_ERR(compalbl_device))
333 return PTR_ERR(compalbl_device);
333 334
334 compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1; 335 compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
336 }
335 337
336 ret = platform_driver_register(&compal_driver); 338 ret = platform_driver_register(&compal_driver);
337 if (ret) 339 if (ret)
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index 9ef98b2d5039..02fe2b8b8939 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -825,9 +825,15 @@ static int __init eeepc_laptop_init(void)
825 return -ENODEV; 825 return -ENODEV;
826 } 826 }
827 dev = acpi_get_physical_device(ehotk->device->handle); 827 dev = acpi_get_physical_device(ehotk->device->handle);
828 result = eeepc_backlight_init(dev); 828
829 if (result) 829 if (!acpi_video_backlight_support()) {
830 goto fail_backlight; 830 result = eeepc_backlight_init(dev);
831 if (result)
832 goto fail_backlight;
833 } else
834 printk(EEEPC_INFO "Backlight controlled by ACPI video "
835 "driver\n");
836
831 result = eeepc_hwmon_init(dev); 837 result = eeepc_hwmon_init(dev);
832 if (result) 838 if (result)
833 goto fail_hwmon; 839 goto fail_hwmon;
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index d2cf0bfe3163..a7dd3e9fb79d 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -464,6 +464,14 @@ static int dmi_check_cb_s6410(const struct dmi_system_id *id)
464 return 0; 464 return 0;
465} 465}
466 466
467static int dmi_check_cb_s6420(const struct dmi_system_id *id)
468{
469 dmi_check_cb_common(id);
470 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
471 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
472 return 0;
473}
474
467static int dmi_check_cb_p8010(const struct dmi_system_id *id) 475static int dmi_check_cb_p8010(const struct dmi_system_id *id)
468{ 476{
469 dmi_check_cb_common(id); 477 dmi_check_cb_common(id);
@@ -473,7 +481,7 @@ static int dmi_check_cb_p8010(const struct dmi_system_id *id)
473 return 0; 481 return 0;
474} 482}
475 483
476static struct dmi_system_id __initdata fujitsu_dmi_table[] = { 484static struct dmi_system_id fujitsu_dmi_table[] = {
477 { 485 {
478 .ident = "Fujitsu Siemens S6410", 486 .ident = "Fujitsu Siemens S6410",
479 .matches = { 487 .matches = {
@@ -482,6 +490,13 @@ static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
482 }, 490 },
483 .callback = dmi_check_cb_s6410}, 491 .callback = dmi_check_cb_s6410},
484 { 492 {
493 .ident = "Fujitsu Siemens S6420",
494 .matches = {
495 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
496 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
497 },
498 .callback = dmi_check_cb_s6420},
499 {
485 .ident = "Fujitsu LifeBook P8010", 500 .ident = "Fujitsu LifeBook P8010",
486 .matches = { 501 .matches = {
487 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), 502 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
@@ -990,16 +1005,16 @@ static int __init fujitsu_init(void)
990 1005
991 /* Register backlight stuff */ 1006 /* Register backlight stuff */
992 1007
993 fujitsu->bl_device = 1008 if (!acpi_video_backlight_support()) {
994 backlight_device_register("fujitsu-laptop", NULL, NULL, 1009 fujitsu->bl_device =
995 &fujitsubl_ops); 1010 backlight_device_register("fujitsu-laptop", NULL, NULL,
996 if (IS_ERR(fujitsu->bl_device)) 1011 &fujitsubl_ops);
997 return PTR_ERR(fujitsu->bl_device); 1012 if (IS_ERR(fujitsu->bl_device))
998 1013 return PTR_ERR(fujitsu->bl_device);
999 max_brightness = fujitsu->max_brightness; 1014 max_brightness = fujitsu->max_brightness;
1000 1015 fujitsu->bl_device->props.max_brightness = max_brightness - 1;
1001 fujitsu->bl_device->props.max_brightness = max_brightness - 1; 1016 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1002 fujitsu->bl_device->props.brightness = fujitsu->brightness_level; 1017 }
1003 1018
1004 ret = platform_driver_register(&fujitsupf_driver); 1019 ret = platform_driver_register(&fujitsupf_driver);
1005 if (ret) 1020 if (ret)
@@ -1035,7 +1050,8 @@ fail_hotkey:
1035 1050
1036fail_backlight: 1051fail_backlight:
1037 1052
1038 backlight_device_unregister(fujitsu->bl_device); 1053 if (fujitsu->bl_device)
1054 backlight_device_unregister(fujitsu->bl_device);
1039 1055
1040fail_platform_device2: 1056fail_platform_device2:
1041 1057
@@ -1062,7 +1078,8 @@ static void __exit fujitsu_cleanup(void)
1062 &fujitsupf_attribute_group); 1078 &fujitsupf_attribute_group);
1063 platform_device_unregister(fujitsu->pf_device); 1079 platform_device_unregister(fujitsu->pf_device);
1064 platform_driver_unregister(&fujitsupf_driver); 1080 platform_driver_unregister(&fujitsupf_driver);
1065 backlight_device_unregister(fujitsu->bl_device); 1081 if (fujitsu->bl_device)
1082 backlight_device_unregister(fujitsu->bl_device);
1066 1083
1067 acpi_bus_unregister_driver(&acpi_fujitsu_driver); 1084 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1068 1085
diff --git a/drivers/misc/ics932s401.c b/drivers/misc/ics932s401.c
new file mode 100644
index 000000000000..6e43ab4231ae
--- /dev/null
+++ b/drivers/misc/ics932s401.c
@@ -0,0 +1,515 @@
1/*
2 * A driver for the Integrated Circuits ICS932S401
3 * Copyright (C) 2008 IBM
4 *
5 * Author: Darrick J. Wong <djwong@us.ibm.com>
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; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <linux/module.h>
23#include <linux/jiffies.h>
24#include <linux/i2c.h>
25#include <linux/err.h>
26#include <linux/mutex.h>
27#include <linux/delay.h>
28#include <linux/log2.h>
29
30/* Addresses to scan */
31static const unsigned short normal_i2c[] = { 0x69, I2C_CLIENT_END };
32
33/* Insmod parameters */
34I2C_CLIENT_INSMOD_1(ics932s401);
35
36/* ICS932S401 registers */
37#define ICS932S401_REG_CFG2 0x01
38#define ICS932S401_CFG1_SPREAD 0x01
39#define ICS932S401_REG_CFG7 0x06
40#define ICS932S401_FS_MASK 0x07
41#define ICS932S401_REG_VENDOR_REV 0x07
42#define ICS932S401_VENDOR 1
43#define ICS932S401_VENDOR_MASK 0x0F
44#define ICS932S401_REV 4
45#define ICS932S401_REV_SHIFT 4
46#define ICS932S401_REG_DEVICE 0x09
47#define ICS932S401_DEVICE 11
48#define ICS932S401_REG_CTRL 0x0A
49#define ICS932S401_MN_ENABLED 0x80
50#define ICS932S401_CPU_ALT 0x04
51#define ICS932S401_SRC_ALT 0x08
52#define ICS932S401_REG_CPU_M_CTRL 0x0B
53#define ICS932S401_M_MASK 0x3F
54#define ICS932S401_REG_CPU_N_CTRL 0x0C
55#define ICS932S401_REG_CPU_SPREAD1 0x0D
56#define ICS932S401_REG_CPU_SPREAD2 0x0E
57#define ICS932S401_SPREAD_MASK 0x7FFF
58#define ICS932S401_REG_SRC_M_CTRL 0x0F
59#define ICS932S401_REG_SRC_N_CTRL 0x10
60#define ICS932S401_REG_SRC_SPREAD1 0x11
61#define ICS932S401_REG_SRC_SPREAD2 0x12
62#define ICS932S401_REG_CPU_DIVISOR 0x13
63#define ICS932S401_CPU_DIVISOR_SHIFT 4
64#define ICS932S401_REG_PCISRC_DIVISOR 0x14
65#define ICS932S401_SRC_DIVISOR_MASK 0x0F
66#define ICS932S401_PCI_DIVISOR_SHIFT 4
67
68/* Base clock is 14.318MHz */
69#define BASE_CLOCK 14318
70
71#define NUM_REGS 21
72#define NUM_MIRRORED_REGS 15
73
74static int regs_to_copy[NUM_MIRRORED_REGS] = {
75 ICS932S401_REG_CFG2,
76 ICS932S401_REG_CFG7,
77 ICS932S401_REG_VENDOR_REV,
78 ICS932S401_REG_DEVICE,
79 ICS932S401_REG_CTRL,
80 ICS932S401_REG_CPU_M_CTRL,
81 ICS932S401_REG_CPU_N_CTRL,
82 ICS932S401_REG_CPU_SPREAD1,
83 ICS932S401_REG_CPU_SPREAD2,
84 ICS932S401_REG_SRC_M_CTRL,
85 ICS932S401_REG_SRC_N_CTRL,
86 ICS932S401_REG_SRC_SPREAD1,
87 ICS932S401_REG_SRC_SPREAD2,
88 ICS932S401_REG_CPU_DIVISOR,
89 ICS932S401_REG_PCISRC_DIVISOR,
90};
91
92/* How often do we reread sensors values? (In jiffies) */
93#define SENSOR_REFRESH_INTERVAL (2 * HZ)
94
95/* How often do we reread sensor limit values? (In jiffies) */
96#define LIMIT_REFRESH_INTERVAL (60 * HZ)
97
98struct ics932s401_data {
99 struct attribute_group attrs;
100 struct mutex lock;
101 char sensors_valid;
102 unsigned long sensors_last_updated; /* In jiffies */
103
104 u8 regs[NUM_REGS];
105};
106
107static int ics932s401_probe(struct i2c_client *client,
108 const struct i2c_device_id *id);
109static int ics932s401_detect(struct i2c_client *client, int kind,
110 struct i2c_board_info *info);
111static int ics932s401_remove(struct i2c_client *client);
112
113static const struct i2c_device_id ics932s401_id[] = {
114 { "ics932s401", ics932s401 },
115 { }
116};
117MODULE_DEVICE_TABLE(i2c, ics932s401_id);
118
119static struct i2c_driver ics932s401_driver = {
120 .class = I2C_CLASS_HWMON,
121 .driver = {
122 .name = "ics932s401",
123 },
124 .probe = ics932s401_probe,
125 .remove = ics932s401_remove,
126 .id_table = ics932s401_id,
127 .detect = ics932s401_detect,
128 .address_data = &addr_data,
129};
130
131static struct ics932s401_data *ics932s401_update_device(struct device *dev)
132{
133 struct i2c_client *client = to_i2c_client(dev);
134 struct ics932s401_data *data = i2c_get_clientdata(client);
135 unsigned long local_jiffies = jiffies;
136 int i, temp;
137
138 mutex_lock(&data->lock);
139 if (time_before(local_jiffies, data->sensors_last_updated +
140 SENSOR_REFRESH_INTERVAL)
141 && data->sensors_valid)
142 goto out;
143
144 /*
145 * Each register must be read as a word and then right shifted 8 bits.
146 * Not really sure why this is; setting the "byte count programming"
147 * register to 1 does not fix this problem.
148 */
149 for (i = 0; i < NUM_MIRRORED_REGS; i++) {
150 temp = i2c_smbus_read_word_data(client, regs_to_copy[i]);
151 data->regs[regs_to_copy[i]] = temp >> 8;
152 }
153
154 data->sensors_last_updated = local_jiffies;
155 data->sensors_valid = 1;
156
157out:
158 mutex_unlock(&data->lock);
159 return data;
160}
161
162static ssize_t show_spread_enabled(struct device *dev,
163 struct device_attribute *devattr,
164 char *buf)
165{
166 struct ics932s401_data *data = ics932s401_update_device(dev);
167
168 if (data->regs[ICS932S401_REG_CFG2] & ICS932S401_CFG1_SPREAD)
169 return sprintf(buf, "1\n");
170
171 return sprintf(buf, "0\n");
172}
173
174/* bit to cpu khz map */
175static const int fs_speeds[] = {
176 266666,
177 133333,
178 200000,
179 166666,
180 333333,
181 100000,
182 400000,
183 0,
184};
185
186/* clock divisor map */
187static const int divisors[] = {2, 3, 5, 15, 4, 6, 10, 30, 8, 12, 20, 60, 16,
188 24, 40, 120};
189
190/* Calculate CPU frequency from the M/N registers. */
191static int calculate_cpu_freq(struct ics932s401_data *data)
192{
193 int m, n, freq;
194
195 m = data->regs[ICS932S401_REG_CPU_M_CTRL] & ICS932S401_M_MASK;
196 n = data->regs[ICS932S401_REG_CPU_N_CTRL];
197
198 /* Pull in bits 8 & 9 from the M register */
199 n |= ((int)data->regs[ICS932S401_REG_CPU_M_CTRL] & 0x80) << 1;
200 n |= ((int)data->regs[ICS932S401_REG_CPU_M_CTRL] & 0x40) << 3;
201
202 freq = BASE_CLOCK * (n + 8) / (m + 2);
203 freq /= divisors[data->regs[ICS932S401_REG_CPU_DIVISOR] >>
204 ICS932S401_CPU_DIVISOR_SHIFT];
205
206 return freq;
207}
208
209static ssize_t show_cpu_clock(struct device *dev,
210 struct device_attribute *devattr,
211 char *buf)
212{
213 struct ics932s401_data *data = ics932s401_update_device(dev);
214
215 return sprintf(buf, "%d\n", calculate_cpu_freq(data));
216}
217
218static ssize_t show_cpu_clock_sel(struct device *dev,
219 struct device_attribute *devattr,
220 char *buf)
221{
222 struct ics932s401_data *data = ics932s401_update_device(dev);
223 int freq;
224
225 if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_MN_ENABLED)
226 freq = calculate_cpu_freq(data);
227 else {
228 /* Freq is neatly wrapped up for us */
229 int fid = data->regs[ICS932S401_REG_CFG7] & ICS932S401_FS_MASK;
230 freq = fs_speeds[fid];
231 if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_CPU_ALT) {
232 switch (freq) {
233 case 166666:
234 freq = 160000;
235 break;
236 case 333333:
237 freq = 320000;
238 break;
239 }
240 }
241 }
242
243 return sprintf(buf, "%d\n", freq);
244}
245
246/* Calculate SRC frequency from the M/N registers. */
247static int calculate_src_freq(struct ics932s401_data *data)
248{
249 int m, n, freq;
250
251 m = data->regs[ICS932S401_REG_SRC_M_CTRL] & ICS932S401_M_MASK;
252 n = data->regs[ICS932S401_REG_SRC_N_CTRL];
253
254 /* Pull in bits 8 & 9 from the M register */
255 n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x80) << 1;
256 n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x40) << 3;
257
258 freq = BASE_CLOCK * (n + 8) / (m + 2);
259 freq /= divisors[data->regs[ICS932S401_REG_PCISRC_DIVISOR] &
260 ICS932S401_SRC_DIVISOR_MASK];
261
262 return freq;
263}
264
265static ssize_t show_src_clock(struct device *dev,
266 struct device_attribute *devattr,
267 char *buf)
268{
269 struct ics932s401_data *data = ics932s401_update_device(dev);
270
271 return sprintf(buf, "%d\n", calculate_src_freq(data));
272}
273
274static ssize_t show_src_clock_sel(struct device *dev,
275 struct device_attribute *devattr,
276 char *buf)
277{
278 struct ics932s401_data *data = ics932s401_update_device(dev);
279 int freq;
280
281 if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_MN_ENABLED)
282 freq = calculate_src_freq(data);
283 else
284 /* Freq is neatly wrapped up for us */
285 if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_CPU_ALT &&
286 data->regs[ICS932S401_REG_CTRL] & ICS932S401_SRC_ALT)
287 freq = 96000;
288 else
289 freq = 100000;
290
291 return sprintf(buf, "%d\n", freq);
292}
293
294/* Calculate PCI frequency from the SRC M/N registers. */
295static int calculate_pci_freq(struct ics932s401_data *data)
296{
297 int m, n, freq;
298
299 m = data->regs[ICS932S401_REG_SRC_M_CTRL] & ICS932S401_M_MASK;
300 n = data->regs[ICS932S401_REG_SRC_N_CTRL];
301
302 /* Pull in bits 8 & 9 from the M register */
303 n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x80) << 1;
304 n |= ((int)data->regs[ICS932S401_REG_SRC_M_CTRL] & 0x40) << 3;
305
306 freq = BASE_CLOCK * (n + 8) / (m + 2);
307 freq /= divisors[data->regs[ICS932S401_REG_PCISRC_DIVISOR] >>
308 ICS932S401_PCI_DIVISOR_SHIFT];
309
310 return freq;
311}
312
313static ssize_t show_pci_clock(struct device *dev,
314 struct device_attribute *devattr,
315 char *buf)
316{
317 struct ics932s401_data *data = ics932s401_update_device(dev);
318
319 return sprintf(buf, "%d\n", calculate_pci_freq(data));
320}
321
322static ssize_t show_pci_clock_sel(struct device *dev,
323 struct device_attribute *devattr,
324 char *buf)
325{
326 struct ics932s401_data *data = ics932s401_update_device(dev);
327 int freq;
328
329 if (data->regs[ICS932S401_REG_CTRL] & ICS932S401_MN_ENABLED)
330 freq = calculate_pci_freq(data);
331 else
332 freq = 33333;
333
334 return sprintf(buf, "%d\n", freq);
335}
336
337static ssize_t show_value(struct device *dev,
338 struct device_attribute *devattr,
339 char *buf);
340
341static ssize_t show_spread(struct device *dev,
342 struct device_attribute *devattr,
343 char *buf);
344
345static DEVICE_ATTR(spread_enabled, S_IRUGO, show_spread_enabled, NULL);
346static DEVICE_ATTR(cpu_clock_selection, S_IRUGO, show_cpu_clock_sel, NULL);
347static DEVICE_ATTR(cpu_clock, S_IRUGO, show_cpu_clock, NULL);
348static DEVICE_ATTR(src_clock_selection, S_IRUGO, show_src_clock_sel, NULL);
349static DEVICE_ATTR(src_clock, S_IRUGO, show_src_clock, NULL);
350static DEVICE_ATTR(pci_clock_selection, S_IRUGO, show_pci_clock_sel, NULL);
351static DEVICE_ATTR(pci_clock, S_IRUGO, show_pci_clock, NULL);
352static DEVICE_ATTR(usb_clock, S_IRUGO, show_value, NULL);
353static DEVICE_ATTR(ref_clock, S_IRUGO, show_value, NULL);
354static DEVICE_ATTR(cpu_spread, S_IRUGO, show_spread, NULL);
355static DEVICE_ATTR(src_spread, S_IRUGO, show_spread, NULL);
356
357static struct attribute *ics932s401_attr[] =
358{
359 &dev_attr_spread_enabled.attr,
360 &dev_attr_cpu_clock_selection.attr,
361 &dev_attr_cpu_clock.attr,
362 &dev_attr_src_clock_selection.attr,
363 &dev_attr_src_clock.attr,
364 &dev_attr_pci_clock_selection.attr,
365 &dev_attr_pci_clock.attr,
366 &dev_attr_usb_clock.attr,
367 &dev_attr_ref_clock.attr,
368 &dev_attr_cpu_spread.attr,
369 &dev_attr_src_spread.attr,
370 NULL
371};
372
373static ssize_t show_value(struct device *dev,
374 struct device_attribute *devattr,
375 char *buf)
376{
377 int x;
378
379 if (devattr == &dev_attr_usb_clock)
380 x = 48000;
381 else if (devattr == &dev_attr_ref_clock)
382 x = BASE_CLOCK;
383 else
384 BUG();
385
386 return sprintf(buf, "%d\n", x);
387}
388
389static ssize_t show_spread(struct device *dev,
390 struct device_attribute *devattr,
391 char *buf)
392{
393 struct ics932s401_data *data = ics932s401_update_device(dev);
394 int reg;
395 unsigned long val;
396
397 if (!(data->regs[ICS932S401_REG_CFG2] & ICS932S401_CFG1_SPREAD))
398 return sprintf(buf, "0%%\n");
399
400 if (devattr == &dev_attr_src_spread)
401 reg = ICS932S401_REG_SRC_SPREAD1;
402 else if (devattr == &dev_attr_cpu_spread)
403 reg = ICS932S401_REG_CPU_SPREAD1;
404 else
405 BUG();
406
407 val = data->regs[reg] | (data->regs[reg + 1] << 8);
408 val &= ICS932S401_SPREAD_MASK;
409
410 /* Scale 0..2^14 to -0.5. */
411 val = 500000 * val / 16384;
412 return sprintf(buf, "-0.%lu%%\n", val);
413}
414
415/* Return 0 if detection is successful, -ENODEV otherwise */
416static int ics932s401_detect(struct i2c_client *client, int kind,
417 struct i2c_board_info *info)
418{
419 struct i2c_adapter *adapter = client->adapter;
420
421 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
422 return -ENODEV;
423
424 if (kind <= 0) {
425 int vendor, device, revision;
426
427 vendor = i2c_smbus_read_word_data(client,
428 ICS932S401_REG_VENDOR_REV);
429 vendor >>= 8;
430 revision = vendor >> ICS932S401_REV_SHIFT;
431 vendor &= ICS932S401_VENDOR_MASK;
432 if (vendor != ICS932S401_VENDOR)
433 return -ENODEV;
434
435 device = i2c_smbus_read_word_data(client,
436 ICS932S401_REG_DEVICE);
437 device >>= 8;
438 if (device != ICS932S401_DEVICE)
439 return -ENODEV;
440
441 if (revision != ICS932S401_REV)
442 dev_info(&adapter->dev, "Unknown revision %d\n",
443 revision);
444 } else
445 dev_dbg(&adapter->dev, "detection forced\n");
446
447 strlcpy(info->type, "ics932s401", I2C_NAME_SIZE);
448
449 return 0;
450}
451
452static int ics932s401_probe(struct i2c_client *client,
453 const struct i2c_device_id *id)
454{
455 struct ics932s401_data *data;
456 int err;
457
458 data = kzalloc(sizeof(struct ics932s401_data), GFP_KERNEL);
459 if (!data) {
460 err = -ENOMEM;
461 goto exit;
462 }
463
464 i2c_set_clientdata(client, data);
465 mutex_init(&data->lock);
466
467 dev_info(&client->dev, "%s chip found\n", client->name);
468
469 /* Register sysfs hooks */
470 data->attrs.attrs = ics932s401_attr;
471 err = sysfs_create_group(&client->dev.kobj, &data->attrs);
472 if (err)
473 goto exit_free;
474
475 return 0;
476
477exit_free:
478 kfree(data);
479exit:
480 return err;
481}
482
483static int ics932s401_remove(struct i2c_client *client)
484{
485 struct ics932s401_data *data = i2c_get_clientdata(client);
486
487 sysfs_remove_group(&client->dev.kobj, &data->attrs);
488 kfree(data);
489 return 0;
490}
491
492static int __init ics932s401_init(void)
493{
494 return i2c_add_driver(&ics932s401_driver);
495}
496
497static void __exit ics932s401_exit(void)
498{
499 i2c_del_driver(&ics932s401_driver);
500}
501
502MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
503MODULE_DESCRIPTION("ICS932S401 driver");
504MODULE_LICENSE("GPL");
505
506module_init(ics932s401_init);
507module_exit(ics932s401_exit);
508
509/* IBM IntelliStation Z30 */
510MODULE_ALIAS("dmi:bvnIBM:*:rn9228:*");
511MODULE_ALIAS("dmi:bvnIBM:*:rn9232:*");
512
513/* IBM x3650/x3550 */
514MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3650*");
515MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3550*");
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
index e00a2756e97e..27b7662955bb 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/misc/intel_menlow.c
@@ -52,6 +52,11 @@ MODULE_LICENSE("GPL");
52#define MEMORY_ARG_CUR_BANDWIDTH 1 52#define MEMORY_ARG_CUR_BANDWIDTH 1
53#define MEMORY_ARG_MAX_BANDWIDTH 0 53#define MEMORY_ARG_MAX_BANDWIDTH 0
54 54
55/*
56 * GTHS returning 'n' would mean that [0,n-1] states are supported
57 * In that case max_cstate would be n-1
58 * GTHS returning '0' would mean that no bandwidth control states are supported
59 */
55static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev, 60static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
56 unsigned long *max_state) 61 unsigned long *max_state)
57{ 62{
@@ -71,6 +76,9 @@ static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev,
71 if (ACPI_FAILURE(status)) 76 if (ACPI_FAILURE(status))
72 return -EFAULT; 77 return -EFAULT;
73 78
79 if (!value)
80 return -EINVAL;
81
74 *max_state = value - 1; 82 *max_state = value - 1;
75 return 0; 83 return 0;
76} 84}
@@ -121,7 +129,7 @@ static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev,
121 if (memory_get_int_max_bandwidth(cdev, &max_state)) 129 if (memory_get_int_max_bandwidth(cdev, &max_state))
122 return -EFAULT; 130 return -EFAULT;
123 131
124 if (max_state < 0 || state > max_state) 132 if (state > max_state)
125 return -EINVAL; 133 return -EINVAL;
126 134
127 arg_list.count = 1; 135 arg_list.count = 1;
diff --git a/drivers/misc/msi-laptop.c b/drivers/misc/msi-laptop.c
index de898c6938f3..759763d18e4c 100644
--- a/drivers/misc/msi-laptop.c
+++ b/drivers/misc/msi-laptop.c
@@ -347,12 +347,16 @@ static int __init msi_init(void)
347 347
348 /* Register backlight stuff */ 348 /* Register backlight stuff */
349 349
350 msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL, 350 if (acpi_video_backlight_support()) {
351 &msibl_ops); 351 printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
352 if (IS_ERR(msibl_device)) 352 "by ACPI video driver\n");
353 return PTR_ERR(msibl_device); 353 } else {
354 354 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
355 msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1; 355 NULL, &msibl_ops);
356 if (IS_ERR(msibl_device))
357 return PTR_ERR(msibl_device);
358 msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
359 }
356 360
357 ret = platform_driver_register(&msipf_driver); 361 ret = platform_driver_register(&msipf_driver);
358 if (ret) 362 if (ret)
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 06f07e19dc70..7bcb81002dcf 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -1038,7 +1038,11 @@ static int sony_nc_add(struct acpi_device *device)
1038 goto outinput; 1038 goto outinput;
1039 } 1039 }
1040 1040
1041 if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) { 1041 if (!acpi_video_backlight_support()) {
1042 printk(KERN_INFO DRV_PFX "Sony: Brightness ignored, must be "
1043 "controlled by ACPI video driver\n");
1044 } else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
1045 &handle))) {
1042 sony_backlight_device = backlight_device_register("sony", NULL, 1046 sony_backlight_device = backlight_device_register("sony", NULL,
1043 NULL, 1047 NULL,
1044 &sony_backlight_ops); 1048 &sony_backlight_ops);
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 4db1cf9078d9..7a4a26b0edd2 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -4932,16 +4932,25 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
4932 */ 4932 */
4933 b = tpacpi_check_std_acpi_brightness_support(); 4933 b = tpacpi_check_std_acpi_brightness_support();
4934 if (b > 0) { 4934 if (b > 0) {
4935 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { 4935
4936 printk(TPACPI_NOTICE 4936 if (acpi_video_backlight_support()) {
4937 "Lenovo BIOS switched to ACPI backlight " 4937 if (brightness_enable > 1) {
4938 "control mode\n"); 4938 printk(TPACPI_NOTICE
4939 } 4939 "Standard ACPI backlight interface "
4940 if (brightness_enable > 1) { 4940 "available, not loading native one.\n");
4941 printk(TPACPI_NOTICE 4941 return 1;
4942 "standard ACPI backlight interface " 4942 } else if (brightness_enable == 1) {
4943 "available, not loading native one...\n"); 4943 printk(TPACPI_NOTICE
4944 return 1; 4944 "Backlight control force enabled, even if standard "
4945 "ACPI backlight interface is available\n");
4946 }
4947 } else {
4948 if (brightness_enable > 1) {
4949 printk(TPACPI_NOTICE
4950 "Standard ACPI backlight interface not "
4951 "available, thinkpad_acpi native "
4952 "brightness control enabled\n");
4953 }
4945 } 4954 }
4946 } 4955 }
4947 4956
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-22 16:14:06 -0400