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cfce41a6 EP |
1 | /* |
2 | * hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS | |
3 | * | |
4 | * Copyright (C) 2007-2008 Yan Burman | |
5 | * Copyright (C) 2008 Eric Piel | |
9e1c9d86 | 6 | * Copyright (C) 2008-2009 Pavel Machek |
cfce41a6 EP |
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 | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
53ab0e68 JP |
23 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
24 | ||
cfce41a6 EP |
25 | #include <linux/kernel.h> |
26 | #include <linux/init.h> | |
27 | #include <linux/dmi.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/interrupt.h> | |
cfce41a6 EP |
32 | #include <linux/delay.h> |
33 | #include <linux/wait.h> | |
34 | #include <linux/poll.h> | |
35 | #include <linux/freezer.h> | |
cfce41a6 | 36 | #include <linux/uaccess.h> |
9e0c7978 | 37 | #include <linux/leds.h> |
efcfed9b | 38 | #include <linux/atomic.h> |
8b48463f | 39 | #include <linux/acpi.h> |
ff606677 | 40 | #include "../../misc/lis3lv02d/lis3lv02d.h" |
cfce41a6 | 41 | |
96b4b9bf | 42 | #define DRIVER_NAME "hp_accel" |
cfce41a6 EP |
43 | #define ACPI_MDPS_CLASS "accelerometer" |
44 | ||
9e1c9d86 PM |
45 | /* Delayed LEDs infrastructure ------------------------------------ */ |
46 | ||
47 | /* Special LED class that can defer work */ | |
48 | struct delayed_led_classdev { | |
49 | struct led_classdev led_classdev; | |
50 | struct work_struct work; | |
51 | enum led_brightness new_brightness; | |
52 | ||
53 | unsigned int led; /* For driver */ | |
54 | void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value); | |
55 | }; | |
56 | ||
57 | static inline void delayed_set_status_worker(struct work_struct *work) | |
58 | { | |
59 | struct delayed_led_classdev *data = | |
60 | container_of(work, struct delayed_led_classdev, work); | |
61 | ||
62 | data->set_brightness(data, data->new_brightness); | |
63 | } | |
64 | ||
65 | static inline void delayed_sysfs_set(struct led_classdev *led_cdev, | |
66 | enum led_brightness brightness) | |
67 | { | |
68 | struct delayed_led_classdev *data = container_of(led_cdev, | |
69 | struct delayed_led_classdev, led_classdev); | |
70 | data->new_brightness = brightness; | |
71 | schedule_work(&data->work); | |
72 | } | |
73 | ||
74 | /* HP-specific accelerometer driver ------------------------------------ */ | |
cfce41a6 EP |
75 | |
76 | /* For automatic insertion of the module */ | |
77 | static struct acpi_device_id lis3lv02d_device_ids[] = { | |
78 | {"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */ | |
24570d22 | 79 | {"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */ |
b0ad4ff3 | 80 | {"HPQ6007", 0}, /* HP Mobile Data Protection System PNP */ |
cfce41a6 EP |
81 | {"", 0}, |
82 | }; | |
83 | MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids); | |
84 | ||
85 | ||
86 | /** | |
87 | * lis3lv02d_acpi_init - ACPI _INI method: initialize the device. | |
a38da2ed | 88 | * @lis3: pointer to the device struct |
cfce41a6 | 89 | * |
a38da2ed | 90 | * Returns 0 on success. |
cfce41a6 | 91 | */ |
04b73387 | 92 | static int lis3lv02d_acpi_init(struct lis3lv02d *lis3) |
cfce41a6 | 93 | { |
a38da2ed DM |
94 | struct acpi_device *dev = lis3->bus_priv; |
95 | if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI, | |
96 | NULL, NULL) != AE_OK) | |
97 | return -EINVAL; | |
98 | ||
99 | return 0; | |
cfce41a6 EP |
100 | } |
101 | ||
102 | /** | |
103 | * lis3lv02d_acpi_read - ACPI ALRD method: read a register | |
a38da2ed | 104 | * @lis3: pointer to the device struct |
cfce41a6 EP |
105 | * @reg: the register to read |
106 | * @ret: result of the operation | |
107 | * | |
a38da2ed | 108 | * Returns 0 on success. |
cfce41a6 | 109 | */ |
04b73387 | 110 | static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret) |
cfce41a6 | 111 | { |
a38da2ed | 112 | struct acpi_device *dev = lis3->bus_priv; |
cfce41a6 EP |
113 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
114 | struct acpi_object_list args = { 1, &arg0 }; | |
115 | unsigned long long lret; | |
116 | acpi_status status; | |
117 | ||
118 | arg0.integer.value = reg; | |
119 | ||
a38da2ed | 120 | status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret); |
cfce41a6 | 121 | *ret = lret; |
a38da2ed | 122 | return (status != AE_OK) ? -EINVAL : 0; |
cfce41a6 EP |
123 | } |
124 | ||
125 | /** | |
126 | * lis3lv02d_acpi_write - ACPI ALWR method: write to a register | |
a38da2ed | 127 | * @lis3: pointer to the device struct |
cfce41a6 EP |
128 | * @reg: the register to write to |
129 | * @val: the value to write | |
130 | * | |
a38da2ed | 131 | * Returns 0 on success. |
cfce41a6 | 132 | */ |
04b73387 | 133 | static int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val) |
cfce41a6 | 134 | { |
a38da2ed | 135 | struct acpi_device *dev = lis3->bus_priv; |
cfce41a6 EP |
136 | unsigned long long ret; /* Not used when writting */ |
137 | union acpi_object in_obj[2]; | |
138 | struct acpi_object_list args = { 2, in_obj }; | |
139 | ||
140 | in_obj[0].type = ACPI_TYPE_INTEGER; | |
141 | in_obj[0].integer.value = reg; | |
142 | in_obj[1].type = ACPI_TYPE_INTEGER; | |
143 | in_obj[1].integer.value = val; | |
144 | ||
a38da2ed DM |
145 | if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK) |
146 | return -EINVAL; | |
147 | ||
148 | return 0; | |
cfce41a6 EP |
149 | } |
150 | ||
151 | static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi) | |
152 | { | |
2ee32144 | 153 | lis3_dev.ac = *((union axis_conversion *)dmi->driver_data); |
53ab0e68 | 154 | pr_info("hardware type %s found\n", dmi->ident); |
cfce41a6 EP |
155 | |
156 | return 1; | |
157 | } | |
158 | ||
159 | /* Represents, for each axis seen by userspace, the corresponding hw axis (+1). | |
160 | * If the value is negative, the opposite of the hw value is used. */ | |
2ee32144 TI |
161 | #define DEFINE_CONV(name, x, y, z) \ |
162 | static union axis_conversion lis3lv02d_axis_##name = \ | |
163 | { .as_array = { x, y, z } } | |
164 | DEFINE_CONV(normal, 1, 2, 3); | |
165 | DEFINE_CONV(y_inverted, 1, -2, 3); | |
166 | DEFINE_CONV(x_inverted, -1, 2, 3); | |
167 | DEFINE_CONV(z_inverted, 1, 2, -3); | |
168 | DEFINE_CONV(xy_swap, 2, 1, 3); | |
169 | DEFINE_CONV(xy_rotated_left, -2, 1, 3); | |
170 | DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3); | |
171 | DEFINE_CONV(xy_swap_inverted, -2, -1, 3); | |
172 | DEFINE_CONV(xy_rotated_right, 2, -1, 3); | |
173 | DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3); | |
cfce41a6 EP |
174 | |
175 | #define AXIS_DMI_MATCH(_ident, _name, _axis) { \ | |
176 | .ident = _ident, \ | |
177 | .callback = lis3lv02d_dmi_matched, \ | |
178 | .matches = { \ | |
179 | DMI_MATCH(DMI_PRODUCT_NAME, _name) \ | |
180 | }, \ | |
181 | .driver_data = &lis3lv02d_axis_##_axis \ | |
182 | } | |
9ccf3b5e GB |
183 | |
184 | #define AXIS_DMI_MATCH2(_ident, _class1, _name1, \ | |
185 | _class2, _name2, \ | |
186 | _axis) { \ | |
187 | .ident = _ident, \ | |
188 | .callback = lis3lv02d_dmi_matched, \ | |
189 | .matches = { \ | |
190 | DMI_MATCH(DMI_##_class1, _name1), \ | |
191 | DMI_MATCH(DMI_##_class2, _name2), \ | |
192 | }, \ | |
193 | .driver_data = &lis3lv02d_axis_##_axis \ | |
194 | } | |
cfce41a6 EP |
195 | static struct dmi_system_id lis3lv02d_dmi_ids[] = { |
196 | /* product names are truncated to match all kinds of a same model */ | |
197 | AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted), | |
198 | AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted), | |
199 | AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted), | |
200 | AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted), | |
201 | AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted), | |
0093716e | 202 | AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap), |
cfce41a6 EP |
203 | AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted), |
204 | AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left), | |
9d7639d3 | 205 | AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted), |
80eda5fb | 206 | AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd), |
a03018ff PH |
207 | AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd), |
208 | AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap), | |
6bfef2b3 | 209 | AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right), |
0093716e EP |
210 | AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted), |
211 | AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted), | |
212 | AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right), | |
af19611c | 213 | AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap), |
cdeaf622 | 214 | AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted), |
a17b81be | 215 | AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted), |
9ccf3b5e GB |
216 | /* Intel-based HP Pavilion dv5 */ |
217 | AXIS_DMI_MATCH2("HPDV5_I", | |
218 | PRODUCT_NAME, "HP Pavilion dv5", | |
219 | BOARD_NAME, "3603", | |
220 | x_inverted), | |
221 | /* AMD-based HP Pavilion dv5 */ | |
222 | AXIS_DMI_MATCH2("HPDV5_A", | |
223 | PRODUCT_NAME, "HP Pavilion dv5", | |
224 | BOARD_NAME, "3600", | |
225 | y_inverted), | |
9d7639d3 | 226 | AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted), |
12a324b6 | 227 | AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted), |
2545f038 | 228 | AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted), |
9bd14a83 TI |
229 | AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left), |
230 | AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left), | |
231 | AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted), | |
232 | AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap), | |
4e70598c | 233 | AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted), |
d0b6a971 | 234 | AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted), |
37394050 | 235 | AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd), |
85003c38 TI |
236 | AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap), |
237 | AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap), | |
238 | AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap), | |
239 | AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted), | |
cfce41a6 EP |
240 | { NULL, } |
241 | /* Laptop models without axis info (yet): | |
cfce41a6 | 242 | * "NC6910" "HP Compaq 6910" |
cfce41a6 EP |
243 | * "NC2400" "HP Compaq nc2400" |
244 | * "NX74x0" "HP Compaq nx74" | |
245 | * "NX6325" "HP Compaq nx6325" | |
246 | * "NC4400" "HP Compaq nc4400" | |
247 | */ | |
248 | }; | |
249 | ||
9e1c9d86 | 250 | static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value) |
9e0c7978 | 251 | { |
a38da2ed | 252 | struct acpi_device *dev = lis3_dev.bus_priv; |
9e0c7978 EP |
253 | unsigned long long ret; /* Not used when writing */ |
254 | union acpi_object in_obj[1]; | |
255 | struct acpi_object_list args = { 1, in_obj }; | |
256 | ||
257 | in_obj[0].type = ACPI_TYPE_INTEGER; | |
9e1c9d86 | 258 | in_obj[0].integer.value = !!value; |
9e0c7978 | 259 | |
a38da2ed | 260 | acpi_evaluate_integer(dev->handle, "ALED", &args, &ret); |
9e0c7978 EP |
261 | } |
262 | ||
9e1c9d86 PM |
263 | static struct delayed_led_classdev hpled_led = { |
264 | .led_classdev = { | |
265 | .name = "hp::hddprotect", | |
266 | .default_trigger = "none", | |
267 | .brightness_set = delayed_sysfs_set, | |
268 | .flags = LED_CORE_SUSPENDRESUME, | |
269 | }, | |
270 | .set_brightness = hpled_set, | |
9e0c7978 | 271 | }; |
cfce41a6 | 272 | |
ef2cfc79 PM |
273 | static acpi_status |
274 | lis3lv02d_get_resource(struct acpi_resource *resource, void *context) | |
275 | { | |
276 | if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) { | |
277 | struct acpi_resource_extended_irq *irq; | |
278 | u32 *device_irq = context; | |
279 | ||
280 | irq = &resource->data.extended_irq; | |
281 | *device_irq = irq->interrupts[0]; | |
282 | } | |
283 | ||
284 | return AE_OK; | |
285 | } | |
286 | ||
287 | static void lis3lv02d_enum_resources(struct acpi_device *device) | |
288 | { | |
289 | acpi_status status; | |
290 | ||
291 | status = acpi_walk_resources(device->handle, METHOD_NAME__CRS, | |
be84cfc5 | 292 | lis3lv02d_get_resource, &lis3_dev.irq); |
ef2cfc79 PM |
293 | if (ACPI_FAILURE(status)) |
294 | printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n"); | |
295 | } | |
296 | ||
cfce41a6 EP |
297 | static int lis3lv02d_add(struct acpi_device *device) |
298 | { | |
9e0c7978 | 299 | int ret; |
cfce41a6 EP |
300 | |
301 | if (!device) | |
302 | return -EINVAL; | |
303 | ||
a38da2ed | 304 | lis3_dev.bus_priv = device; |
be84cfc5 PM |
305 | lis3_dev.init = lis3lv02d_acpi_init; |
306 | lis3_dev.read = lis3lv02d_acpi_read; | |
307 | lis3_dev.write = lis3lv02d_acpi_write; | |
cfce41a6 EP |
308 | strcpy(acpi_device_name(device), DRIVER_NAME); |
309 | strcpy(acpi_device_class(device), ACPI_MDPS_CLASS); | |
be84cfc5 | 310 | device->driver_data = &lis3_dev; |
cfce41a6 | 311 | |
a38da2ed DM |
312 | /* obtain IRQ number of our device from ACPI */ |
313 | lis3lv02d_enum_resources(device); | |
cfce41a6 EP |
314 | |
315 | /* If possible use a "standard" axes order */ | |
2ee32144 | 316 | if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) { |
53ab0e68 JP |
317 | pr_info("Using custom axes %d,%d,%d\n", |
318 | lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z); | |
2ee32144 | 319 | } else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) { |
53ab0e68 | 320 | pr_info("laptop model unknown, using default axes configuration\n"); |
be84cfc5 | 321 | lis3_dev.ac = lis3lv02d_axis_normal; |
cfce41a6 EP |
322 | } |
323 | ||
a38da2ed DM |
324 | /* call the core layer do its init */ |
325 | ret = lis3lv02d_init_device(&lis3_dev); | |
9e0c7978 EP |
326 | if (ret) |
327 | return ret; | |
328 | ||
a38da2ed DM |
329 | INIT_WORK(&hpled_led.work, delayed_set_status_worker); |
330 | ret = led_classdev_register(NULL, &hpled_led.led_classdev); | |
9e0c7978 | 331 | if (ret) { |
e1e5687d | 332 | lis3lv02d_joystick_disable(&lis3_dev); |
a38da2ed | 333 | lis3lv02d_poweroff(&lis3_dev); |
9e1c9d86 | 334 | flush_work(&hpled_led.work); |
9e0c7978 EP |
335 | return ret; |
336 | } | |
337 | ||
338 | return ret; | |
cfce41a6 EP |
339 | } |
340 | ||
51fac838 | 341 | static int lis3lv02d_remove(struct acpi_device *device) |
cfce41a6 EP |
342 | { |
343 | if (!device) | |
344 | return -EINVAL; | |
345 | ||
e1e5687d | 346 | lis3lv02d_joystick_disable(&lis3_dev); |
a38da2ed | 347 | lis3lv02d_poweroff(&lis3_dev); |
cfce41a6 | 348 | |
9e1c9d86 | 349 | led_classdev_unregister(&hpled_led.led_classdev); |
06efbeb4 | 350 | flush_work(&hpled_led.work); |
9e0c7978 | 351 | |
a002ee89 | 352 | return lis3lv02d_remove_fs(&lis3_dev); |
cfce41a6 EP |
353 | } |
354 | ||
355 | ||
3567a4e2 | 356 | #ifdef CONFIG_PM_SLEEP |
4ce05b42 | 357 | static int lis3lv02d_suspend(struct device *dev) |
cfce41a6 EP |
358 | { |
359 | /* make sure the device is off when we suspend */ | |
a38da2ed | 360 | lis3lv02d_poweroff(&lis3_dev); |
cfce41a6 EP |
361 | return 0; |
362 | } | |
363 | ||
4ce05b42 | 364 | static int lis3lv02d_resume(struct device *dev) |
cfce41a6 | 365 | { |
77838199 SK |
366 | lis3lv02d_poweron(&lis3_dev); |
367 | return 0; | |
cfce41a6 | 368 | } |
4ce05b42 RW |
369 | |
370 | static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume); | |
371 | #define HP_ACCEL_PM (&hp_accel_pm) | |
cfce41a6 | 372 | #else |
4ce05b42 | 373 | #define HP_ACCEL_PM NULL |
cfce41a6 EP |
374 | #endif |
375 | ||
376 | /* For the HP MDPS aka 3D Driveguard */ | |
377 | static struct acpi_driver lis3lv02d_driver = { | |
378 | .name = DRIVER_NAME, | |
379 | .class = ACPI_MDPS_CLASS, | |
380 | .ids = lis3lv02d_device_ids, | |
381 | .ops = { | |
382 | .add = lis3lv02d_add, | |
383 | .remove = lis3lv02d_remove, | |
4ce05b42 RW |
384 | }, |
385 | .drv.pm = HP_ACCEL_PM, | |
cfce41a6 | 386 | }; |
46f6471c | 387 | module_acpi_driver(lis3lv02d_driver); |
cfce41a6 | 388 | |
9e0c7978 | 389 | MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED."); |
cfce41a6 EP |
390 | MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek"); |
391 | MODULE_LICENSE("GPL"); |