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path: root/drivers/video/backlight/mbp_nvidia_bl.c
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Diffstat (limited to 'drivers/video/backlight/mbp_nvidia_bl.c')
-rw-r--r--drivers/video/backlight/mbp_nvidia_bl.c400
1 files changed, 0 insertions, 400 deletions
diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c
deleted file mode 100644
index 1485f7345f49..000000000000
--- a/drivers/video/backlight/mbp_nvidia_bl.c
+++ /dev/null
@@ -1,400 +0,0 @@
1/*
2 * Backlight Driver for Nvidia 8600 in Macbook Pro
3 *
4 * Copyright (c) Red Hat <mjg@redhat.com>
5 * Based on code from Pommed:
6 * Copyright (C) 2006 Nicolas Boichat <nicolas @boichat.ch>
7 * Copyright (C) 2006 Felipe Alfaro Solana <felipe_alfaro @linuxmail.org>
8 * Copyright (C) 2007 Julien BLACHE <jb@jblache.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * This driver triggers SMIs which cause the firmware to change the
15 * backlight brightness. This is icky in many ways, but it's impractical to
16 * get at the firmware code in order to figure out what it's actually doing.
17 */
18
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/init.h>
22#include <linux/platform_device.h>
23#include <linux/backlight.h>
24#include <linux/err.h>
25#include <linux/dmi.h>
26#include <linux/io.h>
27
28static struct backlight_device *mbp_backlight_device;
29
30/* Structure to be passed to the DMI_MATCH function. */
31struct dmi_match_data {
32 /* I/O resource to allocate. */
33 unsigned long iostart;
34 unsigned long iolen;
35 /* Backlight operations structure. */
36 const struct backlight_ops backlight_ops;
37};
38
39/* Module parameters. */
40static int debug;
41module_param_named(debug, debug, int, 0644);
42MODULE_PARM_DESC(debug, "Set to one to enable debugging messages.");
43
44/*
45 * Implementation for MacBooks with Intel chipset.
46 */
47static int intel_chipset_send_intensity(struct backlight_device *bd)
48{
49 int intensity = bd->props.brightness;
50
51 if (debug)
52 printk(KERN_DEBUG "mbp_nvidia_bl: setting brightness to %d\n",
53 intensity);
54
55 outb(0x04 | (intensity << 4), 0xb3);
56 outb(0xbf, 0xb2);
57 return 0;
58}
59
60static int intel_chipset_get_intensity(struct backlight_device *bd)
61{
62 int intensity;
63
64 outb(0x03, 0xb3);
65 outb(0xbf, 0xb2);
66 intensity = inb(0xb3) >> 4;
67
68 if (debug)
69 printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
70 intensity);
71
72 return intensity;
73}
74
75static const struct dmi_match_data intel_chipset_data = {
76 .iostart = 0xb2,
77 .iolen = 2,
78 .backlight_ops = {
79 .options = BL_CORE_SUSPENDRESUME,
80 .get_brightness = intel_chipset_get_intensity,
81 .update_status = intel_chipset_send_intensity,
82 }
83};
84
85/*
86 * Implementation for MacBooks with Nvidia chipset.
87 */
88static int nvidia_chipset_send_intensity(struct backlight_device *bd)
89{
90 int intensity = bd->props.brightness;
91
92 if (debug)
93 printk(KERN_DEBUG "mbp_nvidia_bl: setting brightness to %d\n",
94 intensity);
95
96 outb(0x04 | (intensity << 4), 0x52f);
97 outb(0xbf, 0x52e);
98 return 0;
99}
100
101static int nvidia_chipset_get_intensity(struct backlight_device *bd)
102{
103 int intensity;
104
105 outb(0x03, 0x52f);
106 outb(0xbf, 0x52e);
107 intensity = inb(0x52f) >> 4;
108
109 if (debug)
110 printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
111 intensity);
112
113 return intensity;
114}
115
116static const struct dmi_match_data nvidia_chipset_data = {
117 .iostart = 0x52e,
118 .iolen = 2,
119 .backlight_ops = {
120 .options = BL_CORE_SUSPENDRESUME,
121 .get_brightness = nvidia_chipset_get_intensity,
122 .update_status = nvidia_chipset_send_intensity
123 }
124};
125
126/*
127 * DMI matching.
128 */
129static /* const */ struct dmi_match_data *driver_data;
130
131static int mbp_dmi_match(const struct dmi_system_id *id)
132{
133 driver_data = id->driver_data;
134
135 printk(KERN_INFO "mbp_nvidia_bl: %s detected\n", id->ident);
136 return 1;
137}
138
139static const struct dmi_system_id __initdata mbp_device_table[] = {
140 {
141 .callback = mbp_dmi_match,
142 .ident = "MacBook 1,1",
143 .matches = {
144 DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
145 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
146 },
147 .driver_data = (void *)&intel_chipset_data,
148 },
149 {
150 .callback = mbp_dmi_match,
151 .ident = "MacBook 2,1",
152 .matches = {
153 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
154 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
155 },
156 .driver_data = (void *)&intel_chipset_data,
157 },
158 {
159 .callback = mbp_dmi_match,
160 .ident = "MacBook 3,1",
161 .matches = {
162 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
163 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook3,1"),
164 },
165 .driver_data = (void *)&intel_chipset_data,
166 },
167 {
168 .callback = mbp_dmi_match,
169 .ident = "MacBook 4,1",
170 .matches = {
171 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
172 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4,1"),
173 },
174 .driver_data = (void *)&intel_chipset_data,
175 },
176 {
177 .callback = mbp_dmi_match,
178 .ident = "MacBook 4,2",
179 .matches = {
180 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
181 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4,2"),
182 },
183 .driver_data = (void *)&intel_chipset_data,
184 },
185 {
186 .callback = mbp_dmi_match,
187 .ident = "MacBookPro 1,1",
188 .matches = {
189 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
190 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
191 },
192 .driver_data = (void *)&intel_chipset_data,
193 },
194 {
195 .callback = mbp_dmi_match,
196 .ident = "MacBookPro 1,2",
197 .matches = {
198 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
199 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,2"),
200 },
201 .driver_data = (void *)&intel_chipset_data,
202 },
203 {
204 .callback = mbp_dmi_match,
205 .ident = "MacBookPro 2,1",
206 .matches = {
207 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
208 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,1"),
209 },
210 .driver_data = (void *)&intel_chipset_data,
211 },
212 {
213 .callback = mbp_dmi_match,
214 .ident = "MacBookPro 2,2",
215 .matches = {
216 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
217 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
218 },
219 .driver_data = (void *)&intel_chipset_data,
220 },
221 {
222 .callback = mbp_dmi_match,
223 .ident = "MacBookPro 3,1",
224 .matches = {
225 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
226 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
227 },
228 .driver_data = (void *)&intel_chipset_data,
229 },
230 {
231 .callback = mbp_dmi_match,
232 .ident = "MacBookPro 3,2",
233 .matches = {
234 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
235 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,2"),
236 },
237 .driver_data = (void *)&intel_chipset_data,
238 },
239 {
240 .callback = mbp_dmi_match,
241 .ident = "MacBookPro 4,1",
242 .matches = {
243 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
244 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4,1"),
245 },
246 .driver_data = (void *)&intel_chipset_data,
247 },
248 {
249 .callback = mbp_dmi_match,
250 .ident = "MacBookAir 1,1",
251 .matches = {
252 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
253 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir1,1"),
254 },
255 .driver_data = (void *)&intel_chipset_data,
256 },
257 {
258 .callback = mbp_dmi_match,
259 .ident = "MacBook 5,1",
260 .matches = {
261 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
262 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,1"),
263 },
264 .driver_data = (void *)&nvidia_chipset_data,
265 },
266 {
267 .callback = mbp_dmi_match,
268 .ident = "MacBook 5,2",
269 .matches = {
270 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
271 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,2"),
272 },
273 .driver_data = (void *)&nvidia_chipset_data,
274 },
275 {
276 .callback = mbp_dmi_match,
277 .ident = "MacBook 6,1",
278 .matches = {
279 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
280 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),
281 },
282 .driver_data = (void *)&nvidia_chipset_data,
283 },
284 {
285 .callback = mbp_dmi_match,
286 .ident = "MacBookAir 2,1",
287 .matches = {
288 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
289 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir2,1"),
290 },
291 .driver_data = (void *)&nvidia_chipset_data,
292 },
293 {
294 .callback = mbp_dmi_match,
295 .ident = "MacBookPro 5,1",
296 .matches = {
297 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
298 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,1"),
299 },
300 .driver_data = (void *)&nvidia_chipset_data,
301 },
302 {
303 .callback = mbp_dmi_match,
304 .ident = "MacBookPro 5,2",
305 .matches = {
306 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
307 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,2"),
308 },
309 .driver_data = (void *)&nvidia_chipset_data,
310 },
311 {
312 .callback = mbp_dmi_match,
313 .ident = "MacBookPro 5,3",
314 .matches = {
315 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
316 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,3"),
317 },
318 .driver_data = (void *)&nvidia_chipset_data,
319 },
320 {
321 .callback = mbp_dmi_match,
322 .ident = "MacBookPro 5,4",
323 .matches = {
324 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
325 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,4"),
326 },
327 .driver_data = (void *)&nvidia_chipset_data,
328 },
329 {
330 .callback = mbp_dmi_match,
331 .ident = "MacBookPro 5,5",
332 .matches = {
333 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
334 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,5"),
335 },
336 .driver_data = (void *)&nvidia_chipset_data,
337 },
338 {
339 .callback = mbp_dmi_match,
340 .ident = "MacBookAir 3,1",
341 .matches = {
342 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
343 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir3,1"),
344 },
345 .driver_data = (void *)&nvidia_chipset_data,
346 },
347 {
348 .callback = mbp_dmi_match,
349 .ident = "MacBookAir 3,2",
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
352 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir3,2"),
353 },
354 .driver_data = (void *)&nvidia_chipset_data,
355 },
356 { }
357};
358
359static int __init mbp_init(void)
360{
361 struct backlight_properties props;
362 if (!dmi_check_system(mbp_device_table))
363 return -ENODEV;
364
365 if (!request_region(driver_data->iostart, driver_data->iolen,
366 "Macbook Pro backlight"))
367 return -ENXIO;
368
369 memset(&props, 0, sizeof(struct backlight_properties));
370 props.max_brightness = 15;
371 mbp_backlight_device = backlight_device_register("mbp_backlight", NULL,
372 NULL,
373 &driver_data->backlight_ops,
374 &props);
375 if (IS_ERR(mbp_backlight_device)) {
376 release_region(driver_data->iostart, driver_data->iolen);
377 return PTR_ERR(mbp_backlight_device);
378 }
379
380 mbp_backlight_device->props.brightness =
381 driver_data->backlight_ops.get_brightness(mbp_backlight_device);
382 backlight_update_status(mbp_backlight_device);
383
384 return 0;
385}
386
387static void __exit mbp_exit(void)
388{
389 backlight_device_unregister(mbp_backlight_device);
390
391 release_region(driver_data->iostart, driver_data->iolen);
392}
393
394module_init(mbp_init);
395module_exit(mbp_exit);
396
397MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
398MODULE_DESCRIPTION("Nvidia-based Macbook Pro Backlight Driver");
399MODULE_LICENSE("GPL");
400MODULE_DEVICE_TABLE(dmi, mbp_device_table);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-02 07:26:47 -0500