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22
23#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
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>
32#include <linux/delay.h>
33#include <linux/wait.h>
34#include <linux/poll.h>
35#include <linux/freezer.h>
36#include <linux/uaccess.h>
37#include <linux/leds.h>
38#include <linux/atomic.h>
39#include <linux/acpi.h>
40#include <linux/i8042.h>
41#include <linux/serio.h>
42#include "../../misc/lis3lv02d/lis3lv02d.h"
43
44#define DRIVER_NAME "hp_accel"
45#define ACPI_MDPS_CLASS "accelerometer"
46
47
48
49
50struct delayed_led_classdev {
51 struct led_classdev led_classdev;
52 struct work_struct work;
53 enum led_brightness new_brightness;
54
55 unsigned int led;
56 void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
57};
58
59static inline void delayed_set_status_worker(struct work_struct *work)
60{
61 struct delayed_led_classdev *data =
62 container_of(work, struct delayed_led_classdev, work);
63
64 data->set_brightness(data, data->new_brightness);
65}
66
67static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
68 enum led_brightness brightness)
69{
70 struct delayed_led_classdev *data = container_of(led_cdev,
71 struct delayed_led_classdev, led_classdev);
72 data->new_brightness = brightness;
73 schedule_work(&data->work);
74}
75
76
77
78
79
80#define ACCEL_1 0x25
81#define ACCEL_2 0x26
82#define ACCEL_3 0x27
83#define ACCEL_4 0x28
84
85
86static const struct acpi_device_id lis3lv02d_device_ids[] = {
87 {"HPQ0004", 0},
88 {"HPQ6000", 0},
89 {"HPQ6007", 0},
90 {"", 0},
91};
92MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
93
94
95
96
97
98
99
100
101static int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
102{
103 struct acpi_device *dev = lis3->bus_priv;
104 if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
105 NULL, NULL) != AE_OK)
106 return -EINVAL;
107
108 return 0;
109}
110
111
112
113
114
115
116
117
118
119static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
120{
121 struct acpi_device *dev = lis3->bus_priv;
122 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
123 struct acpi_object_list args = { 1, &arg0 };
124 unsigned long long lret;
125 acpi_status status;
126
127 arg0.integer.value = reg;
128
129 status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
130 if (ACPI_FAILURE(status))
131 return -EINVAL;
132 *ret = lret;
133 return 0;
134}
135
136
137
138
139
140
141
142
143
144static int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
145{
146 struct acpi_device *dev = lis3->bus_priv;
147 unsigned long long ret;
148 union acpi_object in_obj[2];
149 struct acpi_object_list args = { 2, in_obj };
150
151 in_obj[0].type = ACPI_TYPE_INTEGER;
152 in_obj[0].integer.value = reg;
153 in_obj[1].type = ACPI_TYPE_INTEGER;
154 in_obj[1].integer.value = val;
155
156 if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
157 return -EINVAL;
158
159 return 0;
160}
161
162static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
163{
164 lis3_dev.ac = *((union axis_conversion *)dmi->driver_data);
165 pr_info("hardware type %s found\n", dmi->ident);
166
167 return 1;
168}
169
170
171
172#define DEFINE_CONV(name, x, y, z) \
173 static union axis_conversion lis3lv02d_axis_##name = \
174 { .as_array = { x, y, z } }
175DEFINE_CONV(normal, 1, 2, 3);
176DEFINE_CONV(y_inverted, 1, -2, 3);
177DEFINE_CONV(x_inverted, -1, 2, 3);
178DEFINE_CONV(x_inverted_usd, -1, 2, -3);
179DEFINE_CONV(z_inverted, 1, 2, -3);
180DEFINE_CONV(xy_swap, 2, 1, 3);
181DEFINE_CONV(xy_rotated_left, -2, 1, 3);
182DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3);
183DEFINE_CONV(xy_swap_inverted, -2, -1, 3);
184DEFINE_CONV(xy_rotated_right, 2, -1, 3);
185DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3);
186
187#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
188 .ident = _ident, \
189 .callback = lis3lv02d_dmi_matched, \
190 .matches = { \
191 DMI_MATCH(DMI_PRODUCT_NAME, _name) \
192 }, \
193 .driver_data = &lis3lv02d_axis_##_axis \
194}
195
196#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
197 _class2, _name2, \
198 _axis) { \
199 .ident = _ident, \
200 .callback = lis3lv02d_dmi_matched, \
201 .matches = { \
202 DMI_MATCH(DMI_##_class1, _name1), \
203 DMI_MATCH(DMI_##_class2, _name2), \
204 }, \
205 .driver_data = &lis3lv02d_axis_##_axis \
206}
207static const struct dmi_system_id lis3lv02d_dmi_ids[] = {
208
209 AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
210 AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
211 AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
212 AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
213 AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
214 AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
215 AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
216 AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
217 AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
218 AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
219 AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
220 AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
221 AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
222 AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
223 AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
224 AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
225 AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
226 AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
227 AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
228
229 AXIS_DMI_MATCH2("HPDV5_I",
230 PRODUCT_NAME, "HP Pavilion dv5",
231 BOARD_NAME, "3603",
232 x_inverted),
233
234 AXIS_DMI_MATCH2("HPDV5_A",
235 PRODUCT_NAME, "HP Pavilion dv5",
236 BOARD_NAME, "3600",
237 y_inverted),
238 AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
239 AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
240 AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
241 AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
242 AXIS_DMI_MATCH("HPB440G3", "HP ProBook 440 G3", x_inverted_usd),
243 AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
244 AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
245 AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
246 AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
247 AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
248 AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
249 AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
250 AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
251 AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
252 AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
253 AXIS_DMI_MATCH("HPZBook15", "HP ZBook 15", x_inverted),
254 AXIS_DMI_MATCH("HPZBook17", "HP ZBook 17", xy_swap_yz_inverted),
255 { NULL, }
256
257
258
259
260
261
262
263};
264
265static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
266{
267 struct acpi_device *dev = lis3_dev.bus_priv;
268 unsigned long long ret;
269 union acpi_object in_obj[1];
270 struct acpi_object_list args = { 1, in_obj };
271
272 in_obj[0].type = ACPI_TYPE_INTEGER;
273 in_obj[0].integer.value = !!value;
274
275 acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
276}
277
278static struct delayed_led_classdev hpled_led = {
279 .led_classdev = {
280 .name = "hp::hddprotect",
281 .default_trigger = "none",
282 .brightness_set = delayed_sysfs_set,
283 .flags = LED_CORE_SUSPENDRESUME,
284 },
285 .set_brightness = hpled_set,
286};
287
288static acpi_status
289lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
290{
291 if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
292 struct acpi_resource_extended_irq *irq;
293 u32 *device_irq = context;
294
295 irq = &resource->data.extended_irq;
296 *device_irq = irq->interrupts[0];
297 }
298
299 return AE_OK;
300}
301
302static void lis3lv02d_enum_resources(struct acpi_device *device)
303{
304 acpi_status status;
305
306 status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
307 lis3lv02d_get_resource, &lis3_dev.irq);
308 if (ACPI_FAILURE(status))
309 printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
310}
311
312static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
313 struct serio *port)
314{
315 static bool extended;
316
317 if (str & I8042_STR_AUXDATA)
318 return false;
319
320 if (data == 0xe0) {
321 extended = true;
322 return true;
323 } else if (unlikely(extended)) {
324 extended = false;
325
326 switch (data) {
327 case ACCEL_1:
328 case ACCEL_2:
329 case ACCEL_3:
330 case ACCEL_4:
331 return true;
332 default:
333 serio_interrupt(port, 0xe0, 0);
334 return false;
335 }
336 }
337
338 return false;
339}
340
341static int lis3lv02d_add(struct acpi_device *device)
342{
343 int ret;
344
345 if (!device)
346 return -EINVAL;
347
348 lis3_dev.bus_priv = device;
349 lis3_dev.init = lis3lv02d_acpi_init;
350 lis3_dev.read = lis3lv02d_acpi_read;
351 lis3_dev.write = lis3lv02d_acpi_write;
352 strcpy(acpi_device_name(device), DRIVER_NAME);
353 strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
354 device->driver_data = &lis3_dev;
355
356
357 lis3lv02d_enum_resources(device);
358
359
360 if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
361 pr_info("Using custom axes %d,%d,%d\n",
362 lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
363 } else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
364 pr_info("laptop model unknown, using default axes configuration\n");
365 lis3_dev.ac = lis3lv02d_axis_normal;
366 }
367
368
369 ret = lis3lv02d_init_device(&lis3_dev);
370 if (ret)
371 return ret;
372
373
374
375 if (strstr(dev_name(&device->dev), "HPQ6000"))
376 i8042_install_filter(hp_accel_i8042_filter);
377
378 INIT_WORK(&hpled_led.work, delayed_set_status_worker);
379 ret = led_classdev_register(NULL, &hpled_led.led_classdev);
380 if (ret) {
381 lis3lv02d_joystick_disable(&lis3_dev);
382 lis3lv02d_poweroff(&lis3_dev);
383 flush_work(&hpled_led.work);
384 return ret;
385 }
386
387 return ret;
388}
389
390static int lis3lv02d_remove(struct acpi_device *device)
391{
392 if (!device)
393 return -EINVAL;
394
395 i8042_remove_filter(hp_accel_i8042_filter);
396 lis3lv02d_joystick_disable(&lis3_dev);
397 lis3lv02d_poweroff(&lis3_dev);
398
399 led_classdev_unregister(&hpled_led.led_classdev);
400 flush_work(&hpled_led.work);
401
402 return lis3lv02d_remove_fs(&lis3_dev);
403}
404
405
406#ifdef CONFIG_PM_SLEEP
407static int lis3lv02d_suspend(struct device *dev)
408{
409
410 lis3lv02d_poweroff(&lis3_dev);
411 return 0;
412}
413
414static int lis3lv02d_resume(struct device *dev)
415{
416 lis3lv02d_poweron(&lis3_dev);
417 return 0;
418}
419
420static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
421#define HP_ACCEL_PM (&hp_accel_pm)
422#else
423#define HP_ACCEL_PM NULL
424#endif
425
426
427static struct acpi_driver lis3lv02d_driver = {
428 .name = DRIVER_NAME,
429 .class = ACPI_MDPS_CLASS,
430 .ids = lis3lv02d_device_ids,
431 .ops = {
432 .add = lis3lv02d_add,
433 .remove = lis3lv02d_remove,
434 },
435 .drv.pm = HP_ACCEL_PM,
436};
437module_acpi_driver(lis3lv02d_driver);
438
439MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
440MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
441MODULE_LICENSE("GPL");
442
