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23#include <linux/kernel.h>
24#include <linux/init.h>
25#include <linux/dmi.h>
26#include <linux/module.h>
27#include <linux/types.h>
28#include <linux/platform_device.h>
29#include <linux/interrupt.h>
30#include <linux/delay.h>
31#include <linux/wait.h>
32#include <linux/poll.h>
33#include <linux/freezer.h>
34#include <linux/uaccess.h>
35#include <linux/leds.h>
36#include <acpi/acpi_drivers.h>
37#include <asm/atomic.h>
38#include "lis3lv02d.h"
39
40#define DRIVER_NAME "lis3lv02d"
41#define ACPI_MDPS_CLASS "accelerometer"
42
43
44
45
46struct delayed_led_classdev {
47 struct led_classdev led_classdev;
48 struct work_struct work;
49 enum led_brightness new_brightness;
50
51 unsigned int led;
52 void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
53};
54
55static inline void delayed_set_status_worker(struct work_struct *work)
56{
57 struct delayed_led_classdev *data =
58 container_of(work, struct delayed_led_classdev, work);
59
60 data->set_brightness(data, data->new_brightness);
61}
62
63static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
64 enum led_brightness brightness)
65{
66 struct delayed_led_classdev *data = container_of(led_cdev,
67 struct delayed_led_classdev, led_classdev);
68 data->new_brightness = brightness;
69 schedule_work(&data->work);
70}
71
72
73
74
75static struct acpi_device_id lis3lv02d_device_ids[] = {
76 {"HPQ0004", 0},
77 {"", 0},
78};
79MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
80
81
82
83
84
85
86
87
88int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
89{
90 struct acpi_device *dev = lis3->bus_priv;
91 if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
92 NULL, NULL) != AE_OK)
93 return -EINVAL;
94
95 return 0;
96}
97
98
99
100
101
102
103
104
105
106int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
107{
108 struct acpi_device *dev = lis3->bus_priv;
109 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
110 struct acpi_object_list args = { 1, &arg0 };
111 unsigned long long lret;
112 acpi_status status;
113
114 arg0.integer.value = reg;
115
116 status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
117 *ret = lret;
118 return (status != AE_OK) ? -EINVAL : 0;
119}
120
121
122
123
124
125
126
127
128
129int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
130{
131 struct acpi_device *dev = lis3->bus_priv;
132 unsigned long long ret;
133 union acpi_object in_obj[2];
134 struct acpi_object_list args = { 2, in_obj };
135
136 in_obj[0].type = ACPI_TYPE_INTEGER;
137 in_obj[0].integer.value = reg;
138 in_obj[1].type = ACPI_TYPE_INTEGER;
139 in_obj[1].integer.value = val;
140
141 if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
142 return -EINVAL;
143
144 return 0;
145}
146
147static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
148{
149 lis3_dev.ac = *((struct axis_conversion *)dmi->driver_data);
150 printk(KERN_INFO DRIVER_NAME ": hardware type %s found.\n", dmi->ident);
151
152 return 1;
153}
154
155
156
157static struct axis_conversion lis3lv02d_axis_normal = {1, 2, 3};
158static struct axis_conversion lis3lv02d_axis_y_inverted = {1, -2, 3};
159static struct axis_conversion lis3lv02d_axis_x_inverted = {-1, 2, 3};
160static struct axis_conversion lis3lv02d_axis_z_inverted = {1, 2, -3};
161static struct axis_conversion lis3lv02d_axis_xy_swap = {2, 1, 3};
162static struct axis_conversion lis3lv02d_axis_xy_rotated_left = {-2, 1, 3};
163static struct axis_conversion lis3lv02d_axis_xy_rotated_left_usd = {-2, 1, -3};
164static struct axis_conversion lis3lv02d_axis_xy_swap_inverted = {-2, -1, 3};
165static struct axis_conversion lis3lv02d_axis_xy_rotated_right = {2, -1, 3};
166static struct axis_conversion lis3lv02d_axis_xy_swap_yz_inverted = {2, -1, -3};
167
168#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
169 .ident = _ident, \
170 .callback = lis3lv02d_dmi_matched, \
171 .matches = { \
172 DMI_MATCH(DMI_PRODUCT_NAME, _name) \
173 }, \
174 .driver_data = &lis3lv02d_axis_##_axis \
175}
176
177#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
178 _class2, _name2, \
179 _axis) { \
180 .ident = _ident, \
181 .callback = lis3lv02d_dmi_matched, \
182 .matches = { \
183 DMI_MATCH(DMI_##_class1, _name1), \
184 DMI_MATCH(DMI_##_class2, _name2), \
185 }, \
186 .driver_data = &lis3lv02d_axis_##_axis \
187}
188static struct dmi_system_id lis3lv02d_dmi_ids[] = {
189
190 AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
191 AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
192 AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
193 AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
194 AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
195 AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
196 AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
197 AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
198 AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
199 AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
200 AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
201 AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
202 AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
203 AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
204 AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
205 AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
206 AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
207
208 AXIS_DMI_MATCH2("HPDV5_I",
209 PRODUCT_NAME, "HP Pavilion dv5",
210 BOARD_NAME, "3603",
211 x_inverted),
212
213 AXIS_DMI_MATCH2("HPDV5_A",
214 PRODUCT_NAME, "HP Pavilion dv5",
215 BOARD_NAME, "3600",
216 y_inverted),
217 AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
218 AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
219 AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
220 { NULL, }
221
222
223
224
225
226
227
228};
229
230static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
231{
232 struct acpi_device *dev = lis3_dev.bus_priv;
233 unsigned long long ret;
234 union acpi_object in_obj[1];
235 struct acpi_object_list args = { 1, in_obj };
236
237 in_obj[0].type = ACPI_TYPE_INTEGER;
238 in_obj[0].integer.value = !!value;
239
240 acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
241}
242
243static struct delayed_led_classdev hpled_led = {
244 .led_classdev = {
245 .name = "hp::hddprotect",
246 .default_trigger = "none",
247 .brightness_set = delayed_sysfs_set,
248 .flags = LED_CORE_SUSPENDRESUME,
249 },
250 .set_brightness = hpled_set,
251};
252
253static acpi_status
254lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
255{
256 if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
257 struct acpi_resource_extended_irq *irq;
258 u32 *device_irq = context;
259
260 irq = &resource->data.extended_irq;
261 *device_irq = irq->interrupts[0];
262 }
263
264 return AE_OK;
265}
266
267static void lis3lv02d_enum_resources(struct acpi_device *device)
268{
269 acpi_status status;
270
271 status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
272 lis3lv02d_get_resource, &lis3_dev.irq);
273 if (ACPI_FAILURE(status))
274 printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
275}
276
277static int lis3lv02d_add(struct acpi_device *device)
278{
279 int ret;
280
281 if (!device)
282 return -EINVAL;
283
284 lis3_dev.bus_priv = device;
285 lis3_dev.init = lis3lv02d_acpi_init;
286 lis3_dev.read = lis3lv02d_acpi_read;
287 lis3_dev.write = lis3lv02d_acpi_write;
288 strcpy(acpi_device_name(device), DRIVER_NAME);
289 strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
290 device->driver_data = &lis3_dev;
291
292
293 lis3lv02d_enum_resources(device);
294
295
296 if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
297 printk(KERN_INFO DRIVER_NAME ": laptop model unknown, "
298 "using default axes configuration\n");
299 lis3_dev.ac = lis3lv02d_axis_normal;
300 }
301
302
303 ret = lis3lv02d_init_device(&lis3_dev);
304 if (ret)
305 return ret;
306
307 INIT_WORK(&hpled_led.work, delayed_set_status_worker);
308 ret = led_classdev_register(NULL, &hpled_led.led_classdev);
309 if (ret) {
310 lis3lv02d_joystick_disable();
311 lis3lv02d_poweroff(&lis3_dev);
312 flush_work(&hpled_led.work);
313 return ret;
314 }
315
316 return ret;
317}
318
319static int lis3lv02d_remove(struct acpi_device *device, int type)
320{
321 if (!device)
322 return -EINVAL;
323
324 lis3lv02d_joystick_disable();
325 lis3lv02d_poweroff(&lis3_dev);
326
327 flush_work(&hpled_led.work);
328 led_classdev_unregister(&hpled_led.led_classdev);
329
330 return lis3lv02d_remove_fs(&lis3_dev);
331}
332
333
334#ifdef CONFIG_PM
335static int lis3lv02d_suspend(struct acpi_device *device, pm_message_t state)
336{
337
338 lis3lv02d_poweroff(&lis3_dev);
339 return 0;
340}
341
342static int lis3lv02d_resume(struct acpi_device *device)
343{
344 lis3lv02d_poweron(&lis3_dev);
345 return 0;
346}
347#else
348#define lis3lv02d_suspend NULL
349#define lis3lv02d_resume NULL
350#endif
351
352
353static struct acpi_driver lis3lv02d_driver = {
354 .name = DRIVER_NAME,
355 .class = ACPI_MDPS_CLASS,
356 .ids = lis3lv02d_device_ids,
357 .ops = {
358 .add = lis3lv02d_add,
359 .remove = lis3lv02d_remove,
360 .suspend = lis3lv02d_suspend,
361 .resume = lis3lv02d_resume,
362 }
363};
364
365static int __init lis3lv02d_init_module(void)
366{
367 int ret;
368
369 if (acpi_disabled)
370 return -ENODEV;
371
372 ret = acpi_bus_register_driver(&lis3lv02d_driver);
373 if (ret < 0)
374 return ret;
375
376 printk(KERN_INFO DRIVER_NAME " driver loaded.\n");
377
378 return 0;
379}
380
381static void __exit lis3lv02d_exit_module(void)
382{
383 acpi_bus_unregister_driver(&lis3lv02d_driver);
384}
385
386MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
387MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
388MODULE_LICENSE("GPL");
389
390module_init(lis3lv02d_init_module);
391module_exit(lis3lv02d_exit_module);
392
393
