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