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ideapad_laptop: convert ideapad device/driver to platform bus
[deliverable/linux.git] / drivers / platform / x86 / ideapad-laptop.c
CommitLineData
58ac7aa0 1/*
a4b5a279 2 * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
58ac7aa0
DW		 3 *
4 * Copyright © 2010 Intel Corporation
5 * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
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., 51 Franklin Street, Fifth Floor, Boston, MA
20 * 02110-1301, USA.
21 */
22
9ab23989
JP		 23#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
58ac7aa0
DW		 25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
29#include <acpi/acpi_bus.h>
30#include <acpi/acpi_drivers.h>
31#include <linux/rfkill.h>
98ee6919 32#include <linux/platform_device.h>
f63409ae
IP		 33#include <linux/input.h>
34#include <linux/input/sparse-keymap.h>
a4ecbb8a
IP		 35#include <linux/backlight.h>
36#include <linux/fb.h>
773e3206
IP		 37#include <linux/debugfs.h>
38#include <linux/seq_file.h>
07a4a4fc 39#include <linux/i8042.h>
58ac7aa0 40
c1f73658 41#define IDEAPAD_RFKILL_DEV_NUM (3)
58ac7aa0 42
3371f481
IP		 43#define CFG_BT_BIT (16)
44#define CFG_3G_BIT (17)
45#define CFG_WIFI_BIT (18)
a84511f7 46#define CFG_CAMERA_BIT (19)
3371f481 47
2be1dc21
IP		 48enum {
49 VPCCMD_R_VPC1 = 0x10,
50 VPCCMD_R_BL_MAX,
51 VPCCMD_R_BL,
52 VPCCMD_W_BL,
53 VPCCMD_R_WIFI,
54 VPCCMD_W_WIFI,
55 VPCCMD_R_BT,
56 VPCCMD_W_BT,
57 VPCCMD_R_BL_POWER,
58 VPCCMD_R_NOVO,
59 VPCCMD_R_VPC2,
60 VPCCMD_R_TOUCHPAD,
61 VPCCMD_W_TOUCHPAD,
62 VPCCMD_R_CAMERA,
63 VPCCMD_W_CAMERA,
64 VPCCMD_R_3G,
65 VPCCMD_W_3G,
66 VPCCMD_R_ODD, /* 0x21 */
0c7bbeb9
MM		 67 VPCCMD_W_FAN,
68 VPCCMD_R_RF,
2be1dc21 69 VPCCMD_W_RF,
0c7bbeb9 70 VPCCMD_R_FAN = 0x2B,
296f9fe0 71 VPCCMD_R_SPECIAL_BUTTONS = 0x31,
2be1dc21
IP		 72 VPCCMD_W_BL_POWER = 0x33,
73};
74
331e0ea2
ZR		 75struct ideapad_rfk_priv {
76 int dev;
77 struct ideapad_private *priv;
78};
79
ce326329 80struct ideapad_private {
469f6434 81 struct acpi_device *adev;
c1f73658 82 struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
331e0ea2 83 struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
98ee6919 84 struct platform_device *platform_device;
f63409ae 85 struct input_dev *inputdev;
a4ecbb8a 86 struct backlight_device *blightdev;
773e3206 87 struct dentry *debug;
3371f481 88 unsigned long cfg;
58ac7aa0
DW		 89};
90
bfa97b7d
IP		 91static bool no_bt_rfkill;
92module_param(no_bt_rfkill, bool, 0444);
93MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
94
6a09f21d
IP		 95/*
96 * ACPI Helpers
97 */
98#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
99
100static int read_method_int(acpi_handle handle, const char *method, int *val)
101{
102 acpi_status status;
103 unsigned long long result;
104
105 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
106 if (ACPI_FAILURE(status)) {
107 *val = -1;
108 return -1;
109 } else {
110 *val = result;
111 return 0;
112 }
113}
114
115static int method_vpcr(acpi_handle handle, int cmd, int *ret)
116{
117 acpi_status status;
118 unsigned long long result;
119 struct acpi_object_list params;
120 union acpi_object in_obj;
121
122 params.count = 1;
123 params.pointer = &in_obj;
124 in_obj.type = ACPI_TYPE_INTEGER;
125 in_obj.integer.value = cmd;
126
127 status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
128
129 if (ACPI_FAILURE(status)) {
130 *ret = -1;
131 return -1;
132 } else {
133 *ret = result;
134 return 0;
135 }
136}
137
138static int method_vpcw(acpi_handle handle, int cmd, int data)
139{
140 struct acpi_object_list params;
141 union acpi_object in_obj[2];
142 acpi_status status;
143
144 params.count = 2;
145 params.pointer = in_obj;
146 in_obj[0].type = ACPI_TYPE_INTEGER;
147 in_obj[0].integer.value = cmd;
148 in_obj[1].type = ACPI_TYPE_INTEGER;
149 in_obj[1].integer.value = data;
150
151 status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
152 if (status != AE_OK)
153 return -1;
154 return 0;
155}
156
157static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
158{
159 int val;
160 unsigned long int end_jiffies;
161
162 if (method_vpcw(handle, 1, cmd))
163 return -1;
164
165 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
166 time_before(jiffies, end_jiffies);) {
167 schedule();
168 if (method_vpcr(handle, 1, &val))
169 return -1;
170 if (val == 0) {
171 if (method_vpcr(handle, 0, &val))
172 return -1;
173 *data = val;
174 return 0;
175 }
176 }
177 pr_err("timeout in read_ec_cmd\n");
178 return -1;
179}
180
181static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
182{
183 int val;
184 unsigned long int end_jiffies;
185
186 if (method_vpcw(handle, 0, data))
187 return -1;
188 if (method_vpcw(handle, 1, cmd))
189 return -1;
190
191 for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
192 time_before(jiffies, end_jiffies);) {
193 schedule();
194 if (method_vpcr(handle, 1, &val))
195 return -1;
196 if (val == 0)
197 return 0;
198 }
199 pr_err("timeout in write_ec_cmd\n");
200 return -1;
201}
6a09f21d 202
773e3206
IP		 203/*
204 * debugfs
205 */
773e3206
IP		 206static int debugfs_status_show(struct seq_file *s, void *data)
207{
331e0ea2 208 struct ideapad_private *priv = s->private;
773e3206
IP		 209 unsigned long value;
210
331e0ea2
ZR		 211 if (!priv)
212 return -EINVAL;
213
214 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
773e3206 215 seq_printf(s, "Backlight max:\t%lu\n", value);
331e0ea2 216 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
773e3206 217 seq_printf(s, "Backlight now:\t%lu\n", value);
331e0ea2 218 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
773e3206
IP		 219 seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
220 seq_printf(s, "=====================\n");
221
331e0ea2 222 if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
773e3206
IP		 223 seq_printf(s, "Radio status:\t%s(%lu)\n",
224 value ? "On" : "Off", value);
331e0ea2 225 if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
773e3206
IP		 226 seq_printf(s, "Wifi status:\t%s(%lu)\n",
227 value ? "On" : "Off", value);
331e0ea2 228 if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
773e3206
IP		 229 seq_printf(s, "BT status:\t%s(%lu)\n",
230 value ? "On" : "Off", value);
331e0ea2 231 if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
773e3206
IP		 232 seq_printf(s, "3G status:\t%s(%lu)\n",
233 value ? "On" : "Off", value);
234 seq_printf(s, "=====================\n");
235
331e0ea2 236 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
773e3206
IP		 237 seq_printf(s, "Touchpad status:%s(%lu)\n",
238 value ? "On" : "Off", value);
331e0ea2 239 if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
773e3206
IP		 240 seq_printf(s, "Camera status:\t%s(%lu)\n",
241 value ? "On" : "Off", value);
242
243 return 0;
244}
245
246static int debugfs_status_open(struct inode *inode, struct file *file)
247{
331e0ea2 248 return single_open(file, debugfs_status_show, inode->i_private);
773e3206
IP		 249}
250
251static const struct file_operations debugfs_status_fops = {
252 .owner = THIS_MODULE,
253 .open = debugfs_status_open,
254 .read = seq_read,
255 .llseek = seq_lseek,
256 .release = single_release,
257};
258
259static int debugfs_cfg_show(struct seq_file *s, void *data)
260{
331e0ea2
ZR		 261 struct ideapad_private *priv = s->private;
262
263 if (!priv) {
773e3206
IP		 264 seq_printf(s, "cfg: N/A\n");
265 } else {
266 seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
331e0ea2
ZR		 267 priv->cfg);
268 if (test_bit(CFG_BT_BIT, &priv->cfg))
773e3206 269 seq_printf(s, "Bluetooth ");
331e0ea2 270 if (test_bit(CFG_3G_BIT, &priv->cfg))
773e3206 271 seq_printf(s, "3G ");
331e0ea2 272 if (test_bit(CFG_WIFI_BIT, &priv->cfg))
773e3206 273 seq_printf(s, "Wireless ");
331e0ea2 274 if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
773e3206
IP		 275 seq_printf(s, "Camera ");
276 seq_printf(s, "\nGraphic: ");
331e0ea2 277 switch ((priv->cfg)&0x700) {
773e3206
IP		 278 case 0x100:
279 seq_printf(s, "Intel");
280 break;
281 case 0x200:
282 seq_printf(s, "ATI");
283 break;
284 case 0x300:
285 seq_printf(s, "Nvidia");
286 break;
287 case 0x400:
288 seq_printf(s, "Intel and ATI");
289 break;
290 case 0x500:
291 seq_printf(s, "Intel and Nvidia");
292 break;
293 }
294 seq_printf(s, "\n");
295 }
296 return 0;
297}
298
299static int debugfs_cfg_open(struct inode *inode, struct file *file)
300{
331e0ea2 301 return single_open(file, debugfs_cfg_show, inode->i_private);
773e3206
IP		 302}
303
304static const struct file_operations debugfs_cfg_fops = {
305 .owner = THIS_MODULE,
306 .open = debugfs_cfg_open,
307 .read = seq_read,
308 .llseek = seq_lseek,
309 .release = single_release,
310};
311
b859f159 312static int ideapad_debugfs_init(struct ideapad_private *priv)
773e3206
IP		 313{
314 struct dentry *node;
315
316 priv->debug = debugfs_create_dir("ideapad", NULL);
317 if (priv->debug == NULL) {
318 pr_err("failed to create debugfs directory");
319 goto errout;
320 }
321
331e0ea2 322 node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
773e3206
IP		 323 &debugfs_cfg_fops);
324 if (!node) {
325 pr_err("failed to create cfg in debugfs");
326 goto errout;
327 }
328
331e0ea2 329 node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
773e3206
IP		 330 &debugfs_status_fops);
331 if (!node) {
a5c3892f 332 pr_err("failed to create status in debugfs");
773e3206
IP		 333 goto errout;
334 }
335
336 return 0;
337
338errout:
339 return -ENOMEM;
340}
341
342static void ideapad_debugfs_exit(struct ideapad_private *priv)
343{
344 debugfs_remove_recursive(priv->debug);
345 priv->debug = NULL;
346}
347
a4b5a279 348/*
3371f481 349 * sysfs
a4b5a279 350 */
58ac7aa0
DW		 351static ssize_t show_ideapad_cam(struct device *dev,
352 struct device_attribute *attr,
353 char *buf)
354{
26c81d5c 355 unsigned long result;
331e0ea2 356 struct ideapad_private *priv = dev_get_drvdata(dev);
58ac7aa0 357
331e0ea2 358 if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
26c81d5c
IP		 359 return sprintf(buf, "-1\n");
360 return sprintf(buf, "%lu\n", result);
58ac7aa0
DW		 361}
362
363static ssize_t store_ideapad_cam(struct device *dev,
364 struct device_attribute *attr,
365 const char *buf, size_t count)
366{
367 int ret, state;
331e0ea2 368 struct ideapad_private *priv = dev_get_drvdata(dev);
58ac7aa0
DW		 369
370 if (!count)
371 return 0;
372 if (sscanf(buf, "%i", &state) != 1)
373 return -EINVAL;
331e0ea2 374 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
58ac7aa0 375 if (ret < 0)
0c7bbeb9 376 return -EIO;
58ac7aa0
DW		 377 return count;
378}
379
380static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
381
0c7bbeb9
MM		 382static ssize_t show_ideapad_fan(struct device *dev,
383 struct device_attribute *attr,
384 char *buf)
385{
386 unsigned long result;
331e0ea2 387 struct ideapad_private *priv = dev_get_drvdata(dev);
0c7bbeb9 388
331e0ea2 389 if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
0c7bbeb9
MM		 390 return sprintf(buf, "-1\n");
391 return sprintf(buf, "%lu\n", result);
392}
393
394static ssize_t store_ideapad_fan(struct device *dev,
395 struct device_attribute *attr,
396 const char *buf, size_t count)
397{
398 int ret, state;
331e0ea2 399 struct ideapad_private *priv = dev_get_drvdata(dev);
0c7bbeb9
MM		 400
401 if (!count)
402 return 0;
403 if (sscanf(buf, "%i", &state) != 1)
404 return -EINVAL;
405 if (state < 0 || state > 4 || state == 3)
406 return -EINVAL;
331e0ea2 407 ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
0c7bbeb9
MM		 408 if (ret < 0)
409 return -EIO;
410 return count;
411}
412
413static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
414
3371f481
IP		 415static struct attribute *ideapad_attributes[] = {
416 &dev_attr_camera_power.attr,
0c7bbeb9 417 &dev_attr_fan_mode.attr,
3371f481
IP		 418 NULL
419};
420
587a1f16 421static umode_t ideapad_is_visible(struct kobject *kobj,
a84511f7
IP		 422 struct attribute *attr,
423 int idx)
424{
425 struct device *dev = container_of(kobj, struct device, kobj);
426 struct ideapad_private *priv = dev_get_drvdata(dev);
427 bool supported;
428
429 if (attr == &dev_attr_camera_power.attr)
430 supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
0c7bbeb9
MM		 431 else if (attr == &dev_attr_fan_mode.attr) {
432 unsigned long value;
331e0ea2
ZR		 433 supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
434 &value);
0c7bbeb9 435 } else
a84511f7
IP		 436 supported = true;
437
438 return supported ? attr->mode : 0;
439}
440
3371f481 441static struct attribute_group ideapad_attribute_group = {
a84511f7 442 .is_visible = ideapad_is_visible,
3371f481
IP		 443 .attrs = ideapad_attributes
444};
445
a4b5a279
IP		 446/*
447 * Rfkill
448 */
c1f73658
IP		 449struct ideapad_rfk_data {
450 char *name;
451 int cfgbit;
452 int opcode;
453 int type;
454};
455
456const struct ideapad_rfk_data ideapad_rfk_data[] = {
2be1dc21
IP		 457 { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
458 { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
459 { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
c1f73658
IP		 460};
461
58ac7aa0
DW		 462static int ideapad_rfk_set(void *data, bool blocked)
463{
331e0ea2 464 struct ideapad_rfk_priv *priv = data;
fa08359e 465
331e0ea2 466 return write_ec_cmd(priv->priv->adev->handle, priv->dev, !blocked);
58ac7aa0
DW		 467}
468
469static struct rfkill_ops ideapad_rfk_ops = {
470 .set_block = ideapad_rfk_set,
471};
472
923de84a 473static void ideapad_sync_rfk_state(struct ideapad_private *priv)
58ac7aa0 474{
2b7266bd 475 unsigned long hw_blocked;
58ac7aa0
DW		 476 int i;
477
331e0ea2 478 if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
58ac7aa0 479 return;
2b7266bd 480 hw_blocked = !hw_blocked;
58ac7aa0 481
c1f73658 482 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
ce326329 483 if (priv->rfk[i])
2b7266bd 484 rfkill_set_hw_state(priv->rfk[i], hw_blocked);
58ac7aa0
DW		 485}
486
75a11f11 487static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
58ac7aa0
DW		 488{
489 int ret;
2b7266bd 490 unsigned long sw_blocked;
58ac7aa0 491
bfa97b7d
IP		 492 if (no_bt_rfkill &&
493 (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
494 /* Force to enable bluetooth when no_bt_rfkill=1 */
331e0ea2 495 write_ec_cmd(priv->adev->handle,
bfa97b7d
IP		 496 ideapad_rfk_data[dev].opcode, 1);
497 return 0;
498 }
331e0ea2
ZR		 499 priv->rfk_priv[dev].dev = dev;
500 priv->rfk_priv[dev].priv = priv;
bfa97b7d 501
75a11f11 502 priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
b5c37b79 503 &priv->platform_device->dev,
75a11f11
ZR		 504 ideapad_rfk_data[dev].type,
505 &ideapad_rfk_ops,
331e0ea2 506 &priv->rfk_priv[dev]);
ce326329 507 if (!priv->rfk[dev])
58ac7aa0
DW		 508 return -ENOMEM;
509
331e0ea2 510 if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
2b7266bd
IP		 511 &sw_blocked)) {
512 rfkill_init_sw_state(priv->rfk[dev], 0);
513 } else {
514 sw_blocked = !sw_blocked;
515 rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
516 }
517
ce326329 518 ret = rfkill_register(priv->rfk[dev]);
58ac7aa0 519 if (ret) {
ce326329 520 rfkill_destroy(priv->rfk[dev]);
58ac7aa0
DW		 521 return ret;
522 }
523 return 0;
524}
525
75a11f11 526static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
58ac7aa0 527{
ce326329 528 if (!priv->rfk[dev])
58ac7aa0
DW		 529 return;
530
ce326329
DW		 531 rfkill_unregister(priv->rfk[dev]);
532 rfkill_destroy(priv->rfk[dev]);
58ac7aa0
DW		 533}
534
98ee6919
IP		 535/*
536 * Platform device
537 */
b5c37b79 538static int ideapad_sysfs_init(struct ideapad_private *priv)
98ee6919 539{
b5c37b79 540 return sysfs_create_group(&priv->platform_device->dev.kobj,
c9f718d0 541 &ideapad_attribute_group);
98ee6919
IP		 542}
543
b5c37b79 544static void ideapad_sysfs_exit(struct ideapad_private *priv)
98ee6919 545{
8693ae84 546 sysfs_remove_group(&priv->platform_device->dev.kobj,
c9f718d0 547 &ideapad_attribute_group);
98ee6919 548}
98ee6919 549
f63409ae
IP		 550/*
551 * input device
552 */
553static const struct key_entry ideapad_keymap[] = {
f43d9ec0 554 { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
296f9fe0
MM		 555 { KE_KEY, 7, { KEY_CAMERA } },
556 { KE_KEY, 11, { KEY_F16 } },
f43d9ec0
IP		 557 { KE_KEY, 13, { KEY_WLAN } },
558 { KE_KEY, 16, { KEY_PROG1 } },
559 { KE_KEY, 17, { KEY_PROG2 } },
296f9fe0
MM		 560 { KE_KEY, 64, { KEY_PROG3 } },
561 { KE_KEY, 65, { KEY_PROG4 } },
07a4a4fc
MM		 562 { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
563 { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
f63409ae
IP		 564 { KE_END, 0 },
565};
566
b859f159 567static int ideapad_input_init(struct ideapad_private *priv)
f63409ae
IP		 568{
569 struct input_dev *inputdev;
570 int error;
571
572 inputdev = input_allocate_device();
573 if (!inputdev) {
574 pr_info("Unable to allocate input device\n");
575 return -ENOMEM;
576 }
577
578 inputdev->name = "Ideapad extra buttons";
579 inputdev->phys = "ideapad/input0";
580 inputdev->id.bustype = BUS_HOST;
8693ae84 581 inputdev->dev.parent = &priv->platform_device->dev;
f63409ae
IP		 582
583 error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
584 if (error) {
585 pr_err("Unable to setup input device keymap\n");
586 goto err_free_dev;
587 }
588
589 error = input_register_device(inputdev);
590 if (error) {
591 pr_err("Unable to register input device\n");
592 goto err_free_keymap;
593 }
594
8693ae84 595 priv->inputdev = inputdev;
f63409ae
IP		 596 return 0;
597
598err_free_keymap:
599 sparse_keymap_free(inputdev);
600err_free_dev:
601 input_free_device(inputdev);
602 return error;
603}
604
7451a55a 605static void ideapad_input_exit(struct ideapad_private *priv)
f63409ae 606{
8693ae84
IP		 607 sparse_keymap_free(priv->inputdev);
608 input_unregister_device(priv->inputdev);
609 priv->inputdev = NULL;
f63409ae
IP		 610}
611
8693ae84
IP		 612static void ideapad_input_report(struct ideapad_private *priv,
613 unsigned long scancode)
f63409ae 614{
8693ae84 615 sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
f63409ae 616}
f63409ae 617
f43d9ec0
IP		 618static void ideapad_input_novokey(struct ideapad_private *priv)
619{
620 unsigned long long_pressed;
621
331e0ea2 622 if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
f43d9ec0
IP		 623 return;
624 if (long_pressed)
625 ideapad_input_report(priv, 17);
626 else
627 ideapad_input_report(priv, 16);
628}
629
296f9fe0
MM		 630static void ideapad_check_special_buttons(struct ideapad_private *priv)
631{
632 unsigned long bit, value;
633
331e0ea2 634 read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
296f9fe0
MM		 635
636 for (bit = 0; bit < 16; bit++) {
637 if (test_bit(bit, &value)) {
638 switch (bit) {
a1ec56ed
MM		 639 case 0: /* Z580 */
640 case 6: /* Z570 */
296f9fe0
MM		 641 /* Thermal Management button */
642 ideapad_input_report(priv, 65);
643 break;
644 case 1:
645 /* OneKey Theater button */
646 ideapad_input_report(priv, 64);
647 break;
a1ec56ed
MM		 648 default:
649 pr_info("Unknown special button: %lu\n", bit);
650 break;
296f9fe0
MM		 651 }
652 }
653 }
654}
655
a4ecbb8a
IP		 656/*
657 * backlight
658 */
659static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
660{
331e0ea2 661 struct ideapad_private *priv = bl_get_data(blightdev);
a4ecbb8a
IP		 662 unsigned long now;
663
331e0ea2
ZR		 664 if (!priv)
665 return -EINVAL;
666
667 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
a4ecbb8a
IP		 668 return -EIO;
669 return now;
670}
671
672static int ideapad_backlight_update_status(struct backlight_device *blightdev)
673{
331e0ea2
ZR		 674 struct ideapad_private *priv = bl_get_data(blightdev);
675
676 if (!priv)
677 return -EINVAL;
678
679 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
2be1dc21 680 blightdev->props.brightness))
a4ecbb8a 681 return -EIO;
331e0ea2 682 if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
a4ecbb8a
IP		 683 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
684 return -EIO;
685
686 return 0;
687}
688
689static const struct backlight_ops ideapad_backlight_ops = {
690 .get_brightness = ideapad_backlight_get_brightness,
691 .update_status = ideapad_backlight_update_status,
692};
693
694static int ideapad_backlight_init(struct ideapad_private *priv)
695{
696 struct backlight_device *blightdev;
697 struct backlight_properties props;
698 unsigned long max, now, power;
699
331e0ea2 700 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
a4ecbb8a 701 return -EIO;
331e0ea2 702 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
a4ecbb8a 703 return -EIO;
331e0ea2 704 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
a4ecbb8a
IP		 705 return -EIO;
706
707 memset(&props, 0, sizeof(struct backlight_properties));
708 props.max_brightness = max;
709 props.type = BACKLIGHT_PLATFORM;
710 blightdev = backlight_device_register("ideapad",
711 &priv->platform_device->dev,
712 priv,
713 &ideapad_backlight_ops,
714 &props);
715 if (IS_ERR(blightdev)) {
716 pr_err("Could not register backlight device\n");
717 return PTR_ERR(blightdev);
718 }
719
720 priv->blightdev = blightdev;
721 blightdev->props.brightness = now;
722 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
723 backlight_update_status(blightdev);
724
725 return 0;
726}
727
728static void ideapad_backlight_exit(struct ideapad_private *priv)
729{
730 if (priv->blightdev)
731 backlight_device_unregister(priv->blightdev);
732 priv->blightdev = NULL;
733}
734
735static void ideapad_backlight_notify_power(struct ideapad_private *priv)
736{
737 unsigned long power;
738 struct backlight_device *blightdev = priv->blightdev;
739
d4afc775
RB		 740 if (!blightdev)
741 return;
331e0ea2 742 if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
a4ecbb8a
IP		 743 return;
744 blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
745}
746
747static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
748{
749 unsigned long now;
750
751 /* if we control brightness via acpi video driver */
752 if (priv->blightdev == NULL) {
331e0ea2 753 read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
a4ecbb8a
IP		 754 return;
755 }
756
757 backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
758}
759
a4b5a279
IP		 760/*
761 * module init/exit
762 */
75a11f11 763static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
07a4a4fc 764{
07a4a4fc
MM		 765 unsigned long value;
766
767 /* Without reading from EC touchpad LED doesn't switch state */
75a11f11 768 if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
07a4a4fc
MM		 769 /* Some IdeaPads don't really turn off touchpad - they only
770 * switch the LED state. We (de)activate KBC AUX port to turn
771 * touchpad off and on. We send KEY_TOUCHPAD_OFF and
772 * KEY_TOUCHPAD_ON to not to get out of sync with LED */
773 unsigned char param;
774 i8042_command(&param, value ? I8042_CMD_AUX_ENABLE :
775 I8042_CMD_AUX_DISABLE);
776 ideapad_input_report(priv, value ? 67 : 66);
777 }
778}
779
b5c37b79
ZR		 780static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
781{
782 struct ideapad_private *priv = data;
783 unsigned long vpc1, vpc2, vpc_bit;
784
785 if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
786 return;
787 if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
788 return;
789
790 vpc1 = (vpc2 << 8) | vpc1;
791 for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
792 if (test_bit(vpc_bit, &vpc1)) {
793 switch (vpc_bit) {
794 case 9:
795 ideapad_sync_rfk_state(priv);
796 break;
797 case 13:
798 case 11:
799 case 7:
800 case 6:
801 ideapad_input_report(priv, vpc_bit);
802 break;
803 case 5:
804 ideapad_sync_touchpad_state(priv);
805 break;
806 case 4:
807 ideapad_backlight_notify_brightness(priv);
808 break;
809 case 3:
810 ideapad_input_novokey(priv);
811 break;
812 case 2:
813 ideapad_backlight_notify_power(priv);
814 break;
815 case 0:
816 ideapad_check_special_buttons(priv);
817 break;
818 default:
819 pr_info("Unknown event: %lu\n", vpc_bit);
820 }
821 }
822 }
823}
824
825static int ideapad_acpi_add(struct platform_device *pdev)
58ac7aa0 826{
3371f481 827 int ret, i;
57f9616b 828 int cfg;
ce326329 829 struct ideapad_private *priv;
b5c37b79
ZR		 830 struct acpi_device *adev;
831
832 ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
833 if (ret)
834 return -ENODEV;
58ac7aa0 835
469f6434 836 if (read_method_int(adev->handle, "_CFG", &cfg))
6f8371c0
IP		 837 return -ENODEV;
838
ce326329
DW		 839 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
840 if (!priv)
841 return -ENOMEM;
b5c37b79
ZR		 842
843 dev_set_drvdata(&pdev->dev, priv);
3371f481 844 priv->cfg = cfg;
469f6434 845 priv->adev = adev;
b5c37b79 846 priv->platform_device = pdev;
98ee6919 847
b5c37b79 848 ret = ideapad_sysfs_init(priv);
98ee6919 849 if (ret)
b5c37b79 850 goto sysfs_failed;
ce326329 851
773e3206
IP		 852 ret = ideapad_debugfs_init(priv);
853 if (ret)
854 goto debugfs_failed;
855
8693ae84 856 ret = ideapad_input_init(priv);
f63409ae
IP		 857 if (ret)
858 goto input_failed;
859
c1f73658 860 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
57f9616b 861 if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
75a11f11 862 ideapad_register_rfkill(priv, i);
c1f73658
IP		 863 else
864 priv->rfk[i] = NULL;
58ac7aa0 865 }
923de84a 866 ideapad_sync_rfk_state(priv);
75a11f11 867 ideapad_sync_touchpad_state(priv);
c9f718d0 868
a4ecbb8a
IP		 869 if (!acpi_video_backlight_support()) {
870 ret = ideapad_backlight_init(priv);
871 if (ret && ret != -ENODEV)
872 goto backlight_failed;
873 }
b5c37b79
ZR		 874 ret = acpi_install_notify_handler(adev->handle,
875 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
876 if (ret)
877 goto notification_failed;
a4ecbb8a 878
58ac7aa0 879 return 0;
b5c37b79
ZR		 880notification_failed:
881 ideapad_backlight_exit(priv);
a4ecbb8a
IP		 882backlight_failed:
883 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
75a11f11 884 ideapad_unregister_rfkill(priv, i);
7451a55a 885 ideapad_input_exit(priv);
f63409ae 886input_failed:
773e3206
IP		 887 ideapad_debugfs_exit(priv);
888debugfs_failed:
b5c37b79
ZR		 889 ideapad_sysfs_exit(priv);
890sysfs_failed:
98ee6919
IP		 891 kfree(priv);
892 return ret;
58ac7aa0
DW		 893}
894
b5c37b79 895static int ideapad_acpi_remove(struct platform_device *pdev)
58ac7aa0 896{
b5c37b79 897 struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
58ac7aa0 898 int i;
ce326329 899
b5c37b79
ZR		 900 acpi_remove_notify_handler(priv->adev->handle,
901 ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
a4ecbb8a 902 ideapad_backlight_exit(priv);
c1f73658 903 for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
75a11f11 904 ideapad_unregister_rfkill(priv, i);
8693ae84 905 ideapad_input_exit(priv);
773e3206 906 ideapad_debugfs_exit(priv);
b5c37b79
ZR		 907 ideapad_sysfs_exit(priv);
908 dev_set_drvdata(&pdev->dev, NULL);
ce326329 909 kfree(priv);
c9f718d0 910
58ac7aa0
DW		 911 return 0;
912}
913
11fa8da5 914#ifdef CONFIG_PM_SLEEP
07a4a4fc
MM		 915static int ideapad_acpi_resume(struct device *device)
916{
75a11f11
ZR		 917 struct ideapad_private *priv;
918
919 if (!device)
920 return -EINVAL;
921 priv = dev_get_drvdata(device);
922
923 ideapad_sync_rfk_state(priv);
924 ideapad_sync_touchpad_state(priv);
07a4a4fc
MM		 925 return 0;
926}
11fa8da5 927#endif
b5c37b79 928static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
07a4a4fc 929
b5c37b79
ZR		 930static const struct acpi_device_id ideapad_device_ids[] = {
931 { "VPC2004", 0},
932 { "", 0},
58ac7aa0 933};
b5c37b79
ZR		 934MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
935
936static struct platform_driver ideapad_acpi_driver = {
937 .probe = ideapad_acpi_add,
938 .remove = ideapad_acpi_remove,
939 .driver = {
940 .name = "ideapad_acpi",
941 .owner = THIS_MODULE,
942 .pm = &ideapad_pm,
943 .acpi_match_table = ACPI_PTR(ideapad_device_ids),
944 },
945};
946
947module_platform_driver(ideapad_acpi_driver);
58ac7aa0
DW		 948
949MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
950MODULE_DESCRIPTION("IdeaPad ACPI Extras");
951MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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