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-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/dell-laptop.c436
2 files changed, 0 insertions, 437 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 9cf8ae6e4b39..d5749a7bc777 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
10obj-$(CONFIG_ICS932S401) += ics932s401.o 10obj-$(CONFIG_ICS932S401) += ics932s401.o
11obj-$(CONFIG_LKDTM) += lkdtm.o 11obj-$(CONFIG_LKDTM) += lkdtm.o
12obj-$(CONFIG_TIFM_CORE) += tifm_core.o 12obj-$(CONFIG_TIFM_CORE) += tifm_core.o
13obj-$(CONFIG_DELL_LAPTOP) += dell-laptop.o
14obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o 13obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o
15obj-$(CONFIG_PHANTOM) += phantom.o 14obj-$(CONFIG_PHANTOM) += phantom.o
16obj-$(CONFIG_SGI_IOC4) += ioc4.o 15obj-$(CONFIG_SGI_IOC4) += ioc4.o
diff --git a/drivers/misc/dell-laptop.c b/drivers/misc/dell-laptop.c
deleted file mode 100644
index 4d33a2068b7a..000000000000
--- a/drivers/misc/dell-laptop.c
+++ /dev/null
@@ -1,436 +0,0 @@
1/*
2 * Driver for Dell laptop extras
3 *
4 * Copyright (c) Red Hat <mjg@redhat.com>
5 *
6 * Based on documentation in the libsmbios package, Copyright (C) 2005 Dell
7 * Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/platform_device.h>
18#include <linux/backlight.h>
19#include <linux/err.h>
20#include <linux/dmi.h>
21#include <linux/io.h>
22#include <linux/rfkill.h>
23#include <linux/power_supply.h>
24#include <linux/acpi.h>
25#include "../firmware/dcdbas.h"
26
27#define BRIGHTNESS_TOKEN 0x7d
28
29/* This structure will be modified by the firmware when we enter
30 * system management mode, hence the volatiles */
31
32struct calling_interface_buffer {
33 u16 class;
34 u16 select;
35 volatile u32 input[4];
36 volatile u32 output[4];
37} __packed;
38
39struct calling_interface_token {
40 u16 tokenID;
41 u16 location;
42 union {
43 u16 value;
44 u16 stringlength;
45 };
46};
47
48struct calling_interface_structure {
49 struct dmi_header header;
50 u16 cmdIOAddress;
51 u8 cmdIOCode;
52 u32 supportedCmds;
53 struct calling_interface_token tokens[];
54} __packed;
55
56static int da_command_address;
57static int da_command_code;
58static int da_num_tokens;
59static struct calling_interface_token *da_tokens;
60
61static struct backlight_device *dell_backlight_device;
62static struct rfkill *wifi_rfkill;
63static struct rfkill *bluetooth_rfkill;
64static struct rfkill *wwan_rfkill;
65
66static const struct dmi_system_id __initdata dell_device_table[] = {
67 {
68 .ident = "Dell laptop",
69 .matches = {
70 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
71 DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
72 },
73 },
74 { }
75};
76
77static void parse_da_table(const struct dmi_header *dm)
78{
79 /* Final token is a terminator, so we don't want to copy it */
80 int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1;
81 struct calling_interface_structure *table =
82 container_of(dm, struct calling_interface_structure, header);
83
84 /* 4 bytes of table header, plus 7 bytes of Dell header, plus at least
85 6 bytes of entry */
86
87 if (dm->length < 17)
88 return;
89
90 da_command_address = table->cmdIOAddress;
91 da_command_code = table->cmdIOCode;
92
93 da_tokens = krealloc(da_tokens, (da_num_tokens + tokens) *
94 sizeof(struct calling_interface_token),
95 GFP_KERNEL);
96
97 if (!da_tokens)
98 return;
99
100 memcpy(da_tokens+da_num_tokens, table->tokens,
101 sizeof(struct calling_interface_token) * tokens);
102
103 da_num_tokens += tokens;
104}
105
106static void find_tokens(const struct dmi_header *dm)
107{
108 switch (dm->type) {
109 case 0xd4: /* Indexed IO */
110 break;
111 case 0xd5: /* Protected Area Type 1 */
112 break;
113 case 0xd6: /* Protected Area Type 2 */
114 break;
115 case 0xda: /* Calling interface */
116 parse_da_table(dm);
117 break;
118 }
119}
120
121static int find_token_location(int tokenid)
122{
123 int i;
124 for (i = 0; i < da_num_tokens; i++) {
125 if (da_tokens[i].tokenID == tokenid)
126 return da_tokens[i].location;
127 }
128
129 return -1;
130}
131
132static struct calling_interface_buffer *
133dell_send_request(struct calling_interface_buffer *buffer, int class,
134 int select)
135{
136 struct smi_cmd command;
137
138 command.magic = SMI_CMD_MAGIC;
139 command.command_address = da_command_address;
140 command.command_code = da_command_code;
141 command.ebx = virt_to_phys(buffer);
142 command.ecx = 0x42534931;
143
144 buffer->class = class;
145 buffer->select = select;
146
147 dcdbas_smi_request(&command);
148
149 return buffer;
150}
151
152/* Derived from information in DellWirelessCtl.cpp:
153 Class 17, select 11 is radio control. It returns an array of 32-bit values.
154
155 result[0]: return code
156 result[1]:
157 Bit 0: Hardware switch supported
158 Bit 1: Wifi locator supported
159 Bit 2: Wifi is supported
160 Bit 3: Bluetooth is supported
161 Bit 4: WWAN is supported
162 Bit 5: Wireless keyboard supported
163 Bits 6-7: Reserved
164 Bit 8: Wifi is installed
165 Bit 9: Bluetooth is installed
166 Bit 10: WWAN is installed
167 Bits 11-15: Reserved
168 Bit 16: Hardware switch is on
169 Bit 17: Wifi is blocked
170 Bit 18: Bluetooth is blocked
171 Bit 19: WWAN is blocked
172 Bits 20-31: Reserved
173 result[2]: NVRAM size in bytes
174 result[3]: NVRAM format version number
175*/
176
177static int dell_rfkill_set(int radio, enum rfkill_state state)
178{
179 struct calling_interface_buffer buffer;
180 int disable = (state == RFKILL_STATE_UNBLOCKED) ? 0 : 1;
181
182 memset(&buffer, 0, sizeof(struct calling_interface_buffer));
183 buffer.input[0] = (1 | (radio<<8) | (disable << 16));
184 dell_send_request(&buffer, 17, 11);
185
186 return 0;
187}
188
189static int dell_wifi_set(void *data, enum rfkill_state state)
190{
191 return dell_rfkill_set(1, state);
192}
193
194static int dell_bluetooth_set(void *data, enum rfkill_state state)
195{
196 return dell_rfkill_set(2, state);
197}
198
199static int dell_wwan_set(void *data, enum rfkill_state state)
200{
201 return dell_rfkill_set(3, state);
202}
203
204static int dell_rfkill_get(int bit, enum rfkill_state *state)
205{
206 struct calling_interface_buffer buffer;
207 int status;
208 int new_state = RFKILL_STATE_HARD_BLOCKED;
209
210 memset(&buffer, 0, sizeof(struct calling_interface_buffer));
211 dell_send_request(&buffer, 17, 11);
212 status = buffer.output[1];
213
214 if (status & (1<<16))
215 new_state = RFKILL_STATE_SOFT_BLOCKED;
216
217 if (status & (1<<bit))
218 *state = new_state;
219 else
220 *state = RFKILL_STATE_UNBLOCKED;
221
222 return 0;
223}
224
225static int dell_wifi_get(void *data, enum rfkill_state *state)
226{
227 return dell_rfkill_get(17, state);
228}
229
230static int dell_bluetooth_get(void *data, enum rfkill_state *state)
231{
232 return dell_rfkill_get(18, state);
233}
234
235static int dell_wwan_get(void *data, enum rfkill_state *state)
236{
237 return dell_rfkill_get(19, state);
238}
239
240static int dell_setup_rfkill(void)
241{
242 struct calling_interface_buffer buffer;
243 int status;
244 int ret;
245
246 memset(&buffer, 0, sizeof(struct calling_interface_buffer));
247 dell_send_request(&buffer, 17, 11);
248 status = buffer.output[1];
249
250 if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
251 wifi_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WLAN);
252 if (!wifi_rfkill)
253 goto err_wifi;
254 wifi_rfkill->name = "dell-wifi";
255 wifi_rfkill->toggle_radio = dell_wifi_set;
256 wifi_rfkill->get_state = dell_wifi_get;
257 ret = rfkill_register(wifi_rfkill);
258 if (ret)
259 goto err_wifi;
260 }
261
262 if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) {
263 bluetooth_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_BLUETOOTH);
264 if (!bluetooth_rfkill)
265 goto err_bluetooth;
266 bluetooth_rfkill->name = "dell-bluetooth";
267 bluetooth_rfkill->toggle_radio = dell_bluetooth_set;
268 bluetooth_rfkill->get_state = dell_bluetooth_get;
269 ret = rfkill_register(bluetooth_rfkill);
270 if (ret)
271 goto err_bluetooth;
272 }
273
274 if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) {
275 wwan_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WWAN);
276 if (!wwan_rfkill)
277 goto err_wwan;
278 wwan_rfkill->name = "dell-wwan";
279 wwan_rfkill->toggle_radio = dell_wwan_set;
280 wwan_rfkill->get_state = dell_wwan_get;
281 ret = rfkill_register(wwan_rfkill);
282 if (ret)
283 goto err_wwan;
284 }
285
286 return 0;
287err_wwan:
288 if (wwan_rfkill)
289 rfkill_free(wwan_rfkill);
290 if (bluetooth_rfkill) {
291 rfkill_unregister(bluetooth_rfkill);
292 bluetooth_rfkill = NULL;
293 }
294err_bluetooth:
295 if (bluetooth_rfkill)
296 rfkill_free(bluetooth_rfkill);
297 if (wifi_rfkill) {
298 rfkill_unregister(wifi_rfkill);
299 wifi_rfkill = NULL;
300 }
301err_wifi:
302 if (wifi_rfkill)
303 rfkill_free(wifi_rfkill);
304
305 return ret;
306}
307
308static int dell_send_intensity(struct backlight_device *bd)
309{
310 struct calling_interface_buffer buffer;
311
312 memset(&buffer, 0, sizeof(struct calling_interface_buffer));
313 buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
314 buffer.input[1] = bd->props.brightness;
315
316 if (buffer.input[0] == -1)
317 return -ENODEV;
318
319 if (power_supply_is_system_supplied() > 0)
320 dell_send_request(&buffer, 1, 2);
321 else
322 dell_send_request(&buffer, 1, 1);
323
324 return 0;
325}
326
327static int dell_get_intensity(struct backlight_device *bd)
328{
329 struct calling_interface_buffer buffer;
330
331 memset(&buffer, 0, sizeof(struct calling_interface_buffer));
332 buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
333
334 if (buffer.input[0] == -1)
335 return -ENODEV;
336
337 if (power_supply_is_system_supplied() > 0)
338 dell_send_request(&buffer, 0, 2);
339 else
340 dell_send_request(&buffer, 0, 1);
341
342 return buffer.output[1];
343}
344
345static struct backlight_ops dell_ops = {
346 .get_brightness = dell_get_intensity,
347 .update_status = dell_send_intensity,
348};
349
350static int __init dell_init(void)
351{
352 struct calling_interface_buffer buffer;
353 int max_intensity = 0;
354 int ret;
355
356 if (!dmi_check_system(dell_device_table))
357 return -ENODEV;
358
359 dmi_walk(find_tokens);
360
361 if (!da_tokens) {
362 printk(KERN_INFO "dell-laptop: Unable to find dmi tokens\n");
363 return -ENODEV;
364 }
365
366 ret = dell_setup_rfkill();
367
368 if (ret) {
369 printk(KERN_WARNING "dell-laptop: Unable to setup rfkill\n");
370 goto out;
371 }
372
373#ifdef CONFIG_ACPI
374 /* In the event of an ACPI backlight being available, don't
375 * register the platform controller.
376 */
377 if (acpi_video_backlight_support())
378 return 0;
379#endif
380
381 memset(&buffer, 0, sizeof(struct calling_interface_buffer));
382 buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
383
384 if (buffer.input[0] != -1) {
385 dell_send_request(&buffer, 0, 2);
386 max_intensity = buffer.output[3];
387 }
388
389 if (max_intensity) {
390 dell_backlight_device = backlight_device_register(
391 "dell_backlight",
392 NULL, NULL,
393 &dell_ops);
394
395 if (IS_ERR(dell_backlight_device)) {
396 ret = PTR_ERR(dell_backlight_device);
397 dell_backlight_device = NULL;
398 goto out;
399 }
400
401 dell_backlight_device->props.max_brightness = max_intensity;
402 dell_backlight_device->props.brightness =
403 dell_get_intensity(dell_backlight_device);
404 backlight_update_status(dell_backlight_device);
405 }
406
407 return 0;
408out:
409 if (wifi_rfkill)
410 rfkill_unregister(wifi_rfkill);
411 if (bluetooth_rfkill)
412 rfkill_unregister(bluetooth_rfkill);
413 if (wwan_rfkill)
414 rfkill_unregister(wwan_rfkill);
415 kfree(da_tokens);
416 return ret;
417}
418
419static void __exit dell_exit(void)
420{
421 backlight_device_unregister(dell_backlight_device);
422 if (wifi_rfkill)
423 rfkill_unregister(wifi_rfkill);
424 if (bluetooth_rfkill)
425 rfkill_unregister(bluetooth_rfkill);
426 if (wwan_rfkill)
427 rfkill_unregister(wwan_rfkill);
428}
429
430module_init(dell_init);
431module_exit(dell_exit);
432
433MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
434MODULE_DESCRIPTION("Dell laptop driver");
435MODULE_LICENSE("GPL");
436MODULE_ALIAS("dmi:*svnDellInc.:*:ct8:*");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 21:07:49 -0500