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fb53440b JS |
1 | /* |
2 | * Asus OLED USB driver | |
3 | * | |
4 | * Copyright (C) 2007,2008 Jakub Schmidtke (sjakub@gmail.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
20 | * | |
21 | * | |
22 | * | |
23 | * This module is based on usbled and asus-laptop modules. | |
24 | * | |
25 | * | |
26 | * Asus OLED support is based on asusoled program taken from | |
631dd1a8 | 27 | * <http://lapsus.berlios.de/asus_oled.html>. |
fb53440b JS |
28 | * |
29 | * | |
30 | */ | |
31 | ||
32 | #include <linux/kernel.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/slab.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/usb.h> | |
38 | #include <linux/platform_device.h> | |
39 | #include <linux/ctype.h> | |
40 | ||
41 | #define ASUS_OLED_VERSION "0.04-dev" | |
42 | #define ASUS_OLED_NAME "asus-oled" | |
43 | #define ASUS_OLED_UNDERSCORE_NAME "asus_oled" | |
44 | ||
45 | #define ASUS_OLED_ERROR "Asus OLED Display Error: " | |
46 | ||
47 | #define ASUS_OLED_STATIC 's' | |
48 | #define ASUS_OLED_ROLL 'r' | |
49 | #define ASUS_OLED_FLASH 'f' | |
50 | ||
51 | #define ASUS_OLED_MAX_WIDTH 1792 | |
52 | #define ASUS_OLED_DISP_HEIGHT 32 | |
53 | #define ASUS_OLED_PACKET_BUF_SIZE 256 | |
54 | ||
e89230ec PH |
55 | #define USB_VENDOR_ID_ASUS 0x0b05 |
56 | #define USB_DEVICE_ID_ASUS_LCM 0x1726 | |
57 | #define USB_DEVICE_ID_ASUS_LCM2 0x175b | |
58 | ||
fb53440b JS |
59 | MODULE_AUTHOR("Jakub Schmidtke, sjakub@gmail.com"); |
60 | MODULE_DESCRIPTION("Asus OLED Driver v" ASUS_OLED_VERSION); | |
61 | MODULE_LICENSE("GPL"); | |
62 | ||
b0e5ca81 AH |
63 | static struct class *oled_class; |
64 | static int oled_num; | |
fb53440b | 65 | |
b0e5ca81 | 66 | static uint start_off; |
fb53440b JS |
67 | |
68 | module_param(start_off, uint, 0644); | |
69 | ||
1ff12a4a KG |
70 | MODULE_PARM_DESC(start_off, |
71 | "Set to 1 to switch off OLED display after it is attached"); | |
fb53440b | 72 | |
1ff12a4a | 73 | enum oled_pack_mode{ |
fb53440b JS |
74 | PACK_MODE_G1, |
75 | PACK_MODE_G50, | |
76 | PACK_MODE_LAST | |
1ff12a4a | 77 | }; |
fb53440b JS |
78 | |
79 | struct oled_dev_desc_str { | |
80 | uint16_t idVendor; | |
81 | uint16_t idProduct; | |
1ff12a4a KG |
82 | /* width of display */ |
83 | uint16_t devWidth; | |
84 | /* formula to be used while packing the picture */ | |
85 | enum oled_pack_mode packMode; | |
fb53440b JS |
86 | const char *devDesc; |
87 | }; | |
88 | ||
89 | /* table of devices that work with this driver */ | |
a457732b | 90 | static const struct usb_device_id id_table[] = { |
1ff12a4a | 91 | /* Asus G1/G2 (and variants)*/ |
e89230ec | 92 | { USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM) }, |
1ff12a4a | 93 | /* Asus G50V (and possibly others - G70? G71?)*/ |
e89230ec | 94 | { USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2) }, |
fb53440b JS |
95 | { }, |
96 | }; | |
97 | ||
98 | /* parameters of specific devices */ | |
118015c4 | 99 | static struct oled_dev_desc_str oled_dev_desc_table[] = { |
e89230ec PH |
100 | { USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM, 128, PACK_MODE_G1, |
101 | "G1/G2" }, | |
102 | { USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2, 256, PACK_MODE_G50, | |
103 | "G50" }, | |
fb53440b JS |
104 | { }, |
105 | }; | |
106 | ||
118015c4 | 107 | MODULE_DEVICE_TABLE(usb, id_table); |
fb53440b | 108 | |
fb53440b JS |
109 | struct asus_oled_header { |
110 | uint8_t magic1; | |
111 | uint8_t magic2; | |
112 | uint8_t flags; | |
113 | uint8_t value3; | |
114 | uint8_t buffer1; | |
115 | uint8_t buffer2; | |
116 | uint8_t value6; | |
117 | uint8_t value7; | |
118 | uint8_t value8; | |
119 | uint8_t padding2[7]; | |
120 | } __attribute((packed)); | |
121 | ||
122 | struct asus_oled_packet { | |
123 | struct asus_oled_header header; | |
124 | uint8_t bitmap[ASUS_OLED_PACKET_BUF_SIZE]; | |
125 | } __attribute((packed)); | |
126 | ||
127 | struct asus_oled_dev { | |
1ff12a4a | 128 | struct usb_device *udev; |
fb53440b JS |
129 | uint8_t pic_mode; |
130 | uint16_t dev_width; | |
1ff12a4a | 131 | enum oled_pack_mode pack_mode; |
fb53440b JS |
132 | size_t height; |
133 | size_t width; | |
134 | size_t x_shift; | |
135 | size_t y_shift; | |
136 | size_t buf_offs; | |
137 | uint8_t last_val; | |
138 | size_t buf_size; | |
139 | char *buf; | |
140 | uint8_t enabled; | |
141 | struct device *dev; | |
142 | }; | |
143 | ||
1ff12a4a KG |
144 | static void setup_packet_header(struct asus_oled_packet *packet, char flags, |
145 | char value3, char buffer1, char buffer2, char value6, | |
146 | char value7, char value8) | |
147 | { | |
148 | memset(packet, 0, sizeof(struct asus_oled_header)); | |
149 | packet->header.magic1 = 0x55; | |
150 | packet->header.magic2 = 0xaa; | |
151 | packet->header.flags = flags; | |
152 | packet->header.value3 = value3; | |
153 | packet->header.buffer1 = buffer1; | |
154 | packet->header.buffer2 = buffer2; | |
155 | packet->header.value6 = value6; | |
156 | packet->header.value7 = value7; | |
157 | packet->header.value8 = value8; | |
158 | } | |
159 | ||
fb53440b JS |
160 | static void enable_oled(struct asus_oled_dev *odev, uint8_t enabl) |
161 | { | |
162 | int a; | |
163 | int retval; | |
164 | int act_len; | |
1ff12a4a | 165 | struct asus_oled_packet *packet; |
fb53440b JS |
166 | |
167 | packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL); | |
168 | ||
169 | if (!packet) { | |
170 | dev_err(&odev->udev->dev, "out of memory\n"); | |
171 | return; | |
172 | } | |
173 | ||
1ff12a4a | 174 | setup_packet_header(packet, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00); |
fb53440b | 175 | |
526fd20a AH |
176 | if (enabl) |
177 | packet->bitmap[0] = 0xaf; | |
178 | else | |
179 | packet->bitmap[0] = 0xae; | |
fb53440b | 180 | |
118015c4 | 181 | for (a = 0; a < 1; a++) { |
fb53440b JS |
182 | retval = usb_bulk_msg(odev->udev, |
183 | usb_sndbulkpipe(odev->udev, 2), | |
184 | packet, | |
185 | sizeof(struct asus_oled_header) + 1, | |
186 | &act_len, | |
187 | -1); | |
188 | ||
189 | if (retval) | |
190 | dev_dbg(&odev->udev->dev, "retval = %d\n", retval); | |
191 | } | |
192 | ||
193 | odev->enabled = enabl; | |
194 | ||
195 | kfree(packet); | |
196 | } | |
197 | ||
1ff12a4a KG |
198 | static ssize_t set_enabled(struct device *dev, struct device_attribute *attr, |
199 | const char *buf, size_t count) | |
fb53440b JS |
200 | { |
201 | struct usb_interface *intf = to_usb_interface(dev); | |
202 | struct asus_oled_dev *odev = usb_get_intfdata(intf); | |
20633bf0 ED |
203 | unsigned long value; |
204 | if (strict_strtoul(buf, 10, &value)) | |
205 | return -EINVAL; | |
fb53440b | 206 | |
20633bf0 | 207 | enable_oled(odev, value); |
fb53440b JS |
208 | |
209 | return count; | |
210 | } | |
211 | ||
1ff12a4a KG |
212 | static ssize_t class_set_enabled(struct device *device, |
213 | struct device_attribute *attr, | |
214 | const char *buf, size_t count) | |
fb53440b | 215 | { |
1ff12a4a KG |
216 | struct asus_oled_dev *odev = |
217 | (struct asus_oled_dev *) dev_get_drvdata(device); | |
20633bf0 | 218 | unsigned long value; |
fb53440b | 219 | |
20633bf0 ED |
220 | if (strict_strtoul(buf, 10, &value)) |
221 | return -EINVAL; | |
fb53440b | 222 | |
20633bf0 | 223 | enable_oled(odev, value); |
fb53440b JS |
224 | |
225 | return count; | |
226 | } | |
227 | ||
1ff12a4a KG |
228 | static ssize_t get_enabled(struct device *dev, struct device_attribute *attr, |
229 | char *buf) | |
fb53440b JS |
230 | { |
231 | struct usb_interface *intf = to_usb_interface(dev); | |
232 | struct asus_oled_dev *odev = usb_get_intfdata(intf); | |
233 | ||
234 | return sprintf(buf, "%d\n", odev->enabled); | |
235 | } | |
236 | ||
1ff12a4a KG |
237 | static ssize_t class_get_enabled(struct device *device, |
238 | struct device_attribute *attr, char *buf) | |
fb53440b | 239 | { |
1ff12a4a KG |
240 | struct asus_oled_dev *odev = |
241 | (struct asus_oled_dev *) dev_get_drvdata(device); | |
fb53440b JS |
242 | |
243 | return sprintf(buf, "%d\n", odev->enabled); | |
244 | } | |
245 | ||
1ff12a4a KG |
246 | static void send_packets(struct usb_device *udev, |
247 | struct asus_oled_packet *packet, | |
248 | char *buf, uint8_t p_type, size_t p_num) | |
fb53440b JS |
249 | { |
250 | size_t i; | |
251 | int act_len; | |
252 | ||
253 | for (i = 0; i < p_num; i++) { | |
254 | int retval; | |
255 | ||
256 | switch (p_type) { | |
1ff12a4a KG |
257 | case ASUS_OLED_ROLL: |
258 | setup_packet_header(packet, 0x40, 0x80, p_num, | |
259 | i + 1, 0x00, 0x01, 0xff); | |
fb53440b | 260 | break; |
1ff12a4a KG |
261 | case ASUS_OLED_STATIC: |
262 | setup_packet_header(packet, 0x10 + i, 0x80, 0x01, | |
263 | 0x01, 0x00, 0x01, 0x00); | |
fb53440b | 264 | break; |
1ff12a4a KG |
265 | case ASUS_OLED_FLASH: |
266 | setup_packet_header(packet, 0x10 + i, 0x80, 0x01, | |
267 | 0x01, 0x00, 0x00, 0xff); | |
fb53440b JS |
268 | break; |
269 | } | |
270 | ||
1ff12a4a KG |
271 | memcpy(packet->bitmap, buf + (ASUS_OLED_PACKET_BUF_SIZE*i), |
272 | ASUS_OLED_PACKET_BUF_SIZE); | |
fb53440b | 273 | |
1ff12a4a KG |
274 | retval = usb_bulk_msg(udev, usb_sndctrlpipe(udev, 2), |
275 | packet, sizeof(struct asus_oled_packet), | |
276 | &act_len, -1); | |
fb53440b JS |
277 | |
278 | if (retval) | |
279 | dev_dbg(&udev->dev, "retval = %d\n", retval); | |
280 | } | |
281 | } | |
282 | ||
1ff12a4a KG |
283 | static void send_packet(struct usb_device *udev, |
284 | struct asus_oled_packet *packet, | |
285 | size_t offset, size_t len, char *buf, uint8_t b1, | |
286 | uint8_t b2, uint8_t b3, uint8_t b4, uint8_t b5, | |
287 | uint8_t b6) { | |
fb53440b JS |
288 | int retval; |
289 | int act_len; | |
290 | ||
1ff12a4a | 291 | setup_packet_header(packet, b1, b2, b3, b4, b5, b6, 0x00); |
fb53440b JS |
292 | memcpy(packet->bitmap, buf + offset, len); |
293 | ||
294 | retval = usb_bulk_msg(udev, | |
1ff12a4a KG |
295 | usb_sndctrlpipe(udev, 2), |
296 | packet, | |
297 | sizeof(struct asus_oled_packet), | |
298 | &act_len, | |
299 | -1); | |
fb53440b JS |
300 | |
301 | if (retval) | |
302 | dev_dbg(&udev->dev, "retval = %d\n", retval); | |
303 | } | |
304 | ||
305 | ||
1ff12a4a KG |
306 | static void send_packets_g50(struct usb_device *udev, |
307 | struct asus_oled_packet *packet, char *buf) | |
fb53440b | 308 | { |
1ff12a4a KG |
309 | send_packet(udev, packet, 0, 0x100, buf, |
310 | 0x10, 0x00, 0x02, 0x01, 0x00, 0x01); | |
311 | send_packet(udev, packet, 0x100, 0x080, buf, | |
312 | 0x10, 0x00, 0x02, 0x02, 0x80, 0x00); | |
313 | ||
314 | send_packet(udev, packet, 0x180, 0x100, buf, | |
315 | 0x11, 0x00, 0x03, 0x01, 0x00, 0x01); | |
316 | send_packet(udev, packet, 0x280, 0x100, buf, | |
317 | 0x11, 0x00, 0x03, 0x02, 0x00, 0x01); | |
318 | send_packet(udev, packet, 0x380, 0x080, buf, | |
319 | 0x11, 0x00, 0x03, 0x03, 0x80, 0x00); | |
fb53440b JS |
320 | } |
321 | ||
322 | ||
323 | static void send_data(struct asus_oled_dev *odev) | |
324 | { | |
325 | size_t packet_num = odev->buf_size / ASUS_OLED_PACKET_BUF_SIZE; | |
1ff12a4a | 326 | struct asus_oled_packet *packet; |
fb53440b JS |
327 | |
328 | packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL); | |
329 | ||
330 | if (!packet) { | |
331 | dev_err(&odev->udev->dev, "out of memory\n"); | |
332 | return; | |
333 | } | |
334 | ||
118015c4 | 335 | if (odev->pack_mode == PACK_MODE_G1) { |
1ff12a4a KG |
336 | /* When sending roll-mode data the display updated only |
337 | first packet. I have no idea why, but when static picture | |
338 | is sent just before rolling picture everything works fine. */ | |
fb53440b | 339 | if (odev->pic_mode == ASUS_OLED_ROLL) |
1ff12a4a KG |
340 | send_packets(odev->udev, packet, odev->buf, |
341 | ASUS_OLED_STATIC, 2); | |
fb53440b | 342 | |
1ff12a4a | 343 | /* Only ROLL mode can use more than 2 packets.*/ |
fb53440b JS |
344 | if (odev->pic_mode != ASUS_OLED_ROLL && packet_num > 2) |
345 | packet_num = 2; | |
346 | ||
1ff12a4a KG |
347 | send_packets(odev->udev, packet, odev->buf, |
348 | odev->pic_mode, packet_num); | |
349 | } else if (odev->pack_mode == PACK_MODE_G50) { | |
fb53440b JS |
350 | send_packets_g50(odev->udev, packet, odev->buf); |
351 | } | |
352 | ||
353 | kfree(packet); | |
354 | } | |
355 | ||
356 | static int append_values(struct asus_oled_dev *odev, uint8_t val, size_t count) | |
357 | { | |
1ff12a4a KG |
358 | while (count-- > 0 && val) { |
359 | size_t x = odev->buf_offs % odev->width; | |
360 | size_t y = odev->buf_offs / odev->width; | |
361 | size_t i; | |
fb53440b | 362 | |
1ff12a4a KG |
363 | x += odev->x_shift; |
364 | y += odev->y_shift; | |
365 | ||
366 | switch (odev->pack_mode) { | |
367 | case PACK_MODE_G1: | |
368 | /* i = (x/128)*640 + 127 - x + (y/8)*128; | |
369 | This one for 128 is the same, but might be better | |
370 | for different widths? */ | |
371 | i = (x/odev->dev_width)*640 + | |
372 | odev->dev_width - 1 - x + | |
373 | (y/8)*odev->dev_width; | |
374 | break; | |
fb53440b | 375 | |
1ff12a4a KG |
376 | case PACK_MODE_G50: |
377 | i = (odev->dev_width - 1 - x)/8 + y*odev->dev_width/8; | |
378 | break; | |
fb53440b | 379 | |
1ff12a4a KG |
380 | default: |
381 | i = 0; | |
382 | printk(ASUS_OLED_ERROR "Unknown OLED Pack Mode: %d!\n", | |
383 | odev->pack_mode); | |
384 | break; | |
385 | } | |
fb53440b | 386 | |
1ff12a4a KG |
387 | if (i >= odev->buf_size) { |
388 | printk(ASUS_OLED_ERROR "Buffer overflow! Report a bug:" | |
389 | "offs: %d >= %d i: %d (x: %d y: %d)\n", | |
390 | (int) odev->buf_offs, (int) odev->buf_size, | |
391 | (int) i, (int) x, (int) y); | |
392 | return -EIO; | |
393 | } | |
fb53440b | 394 | |
1ff12a4a KG |
395 | switch (odev->pack_mode) { |
396 | case PACK_MODE_G1: | |
397 | odev->buf[i] &= ~(1<<(y%8)); | |
398 | break; | |
fb53440b | 399 | |
1ff12a4a KG |
400 | case PACK_MODE_G50: |
401 | odev->buf[i] &= ~(1<<(x%8)); | |
402 | break; | |
403 | ||
404 | default: | |
405 | /* cannot get here; stops gcc complaining*/ | |
406 | ; | |
fb53440b JS |
407 | } |
408 | ||
409 | odev->last_val = val; | |
410 | odev->buf_offs++; | |
411 | } | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
1ff12a4a KG |
416 | static ssize_t odev_set_picture(struct asus_oled_dev *odev, |
417 | const char *buf, size_t count) | |
fb53440b JS |
418 | { |
419 | size_t offs = 0, max_offs; | |
420 | ||
526fd20a AH |
421 | if (count < 1) |
422 | return 0; | |
fb53440b | 423 | |
118015c4 | 424 | if (tolower(buf[0]) == 'b') { |
1ff12a4a | 425 | /* binary mode, set the entire memory*/ |
fb53440b | 426 | |
1ff12a4a | 427 | size_t i; |
fb53440b | 428 | |
1ff12a4a | 429 | odev->buf_size = (odev->dev_width * ASUS_OLED_DISP_HEIGHT) / 8; |
fb53440b | 430 | |
1ff12a4a KG |
431 | kfree(odev->buf); |
432 | odev->buf = kmalloc(odev->buf_size, GFP_KERNEL); | |
0df28be0 PH |
433 | if (odev->buf == NULL) { |
434 | odev->buf_size = 0; | |
435 | printk(ASUS_OLED_ERROR "Out of memory!\n"); | |
436 | return -ENOMEM; | |
437 | } | |
fb53440b | 438 | |
1ff12a4a | 439 | memset(odev->buf, 0xff, odev->buf_size); |
fb53440b | 440 | |
1ff12a4a KG |
441 | for (i = 1; i < count && i <= 32 * 32; i++) { |
442 | odev->buf[i-1] = buf[i]; | |
443 | odev->buf_offs = i-1; | |
444 | } | |
fb53440b | 445 | |
1ff12a4a KG |
446 | odev->width = odev->dev_width / 8; |
447 | odev->height = ASUS_OLED_DISP_HEIGHT; | |
448 | odev->x_shift = 0; | |
449 | odev->y_shift = 0; | |
450 | odev->last_val = 0; | |
fb53440b | 451 | |
1ff12a4a | 452 | send_data(odev); |
fb53440b | 453 | |
1ff12a4a | 454 | return count; |
fb53440b JS |
455 | } |
456 | ||
457 | if (buf[0] == '<') { | |
458 | size_t i; | |
459 | size_t w = 0, h = 0; | |
460 | size_t w_mem, h_mem; | |
461 | ||
1ff12a4a | 462 | if (count < 10 || buf[2] != ':') |
fb53440b | 463 | goto error_header; |
1ff12a4a | 464 | |
fb53440b | 465 | |
118015c4 | 466 | switch (tolower(buf[1])) { |
1ff12a4a KG |
467 | case ASUS_OLED_STATIC: |
468 | case ASUS_OLED_ROLL: | |
469 | case ASUS_OLED_FLASH: | |
470 | odev->pic_mode = buf[1]; | |
471 | break; | |
472 | default: | |
473 | printk(ASUS_OLED_ERROR "Wrong picture mode: '%c'.\n", | |
474 | buf[1]); | |
475 | return -EIO; | |
476 | break; | |
fb53440b JS |
477 | } |
478 | ||
479 | for (i = 3; i < count; ++i) { | |
480 | if (buf[i] >= '0' && buf[i] <= '9') { | |
481 | w = 10*w + (buf[i] - '0'); | |
482 | ||
526fd20a AH |
483 | if (w > ASUS_OLED_MAX_WIDTH) |
484 | goto error_width; | |
1ff12a4a | 485 | } else if (tolower(buf[i]) == 'x') { |
526fd20a | 486 | break; |
1ff12a4a | 487 | } else { |
526fd20a | 488 | goto error_width; |
1ff12a4a | 489 | } |
fb53440b JS |
490 | } |
491 | ||
492 | for (++i; i < count; ++i) { | |
493 | if (buf[i] >= '0' && buf[i] <= '9') { | |
494 | h = 10*h + (buf[i] - '0'); | |
495 | ||
526fd20a AH |
496 | if (h > ASUS_OLED_DISP_HEIGHT) |
497 | goto error_height; | |
1ff12a4a | 498 | } else if (tolower(buf[i]) == '>') { |
526fd20a | 499 | break; |
1ff12a4a | 500 | } else { |
526fd20a | 501 | goto error_height; |
1ff12a4a | 502 | } |
fb53440b JS |
503 | } |
504 | ||
526fd20a AH |
505 | if (w < 1 || w > ASUS_OLED_MAX_WIDTH) |
506 | goto error_width; | |
fb53440b | 507 | |
526fd20a AH |
508 | if (h < 1 || h > ASUS_OLED_DISP_HEIGHT) |
509 | goto error_height; | |
fb53440b | 510 | |
526fd20a AH |
511 | if (i >= count || buf[i] != '>') |
512 | goto error_header; | |
fb53440b JS |
513 | |
514 | offs = i+1; | |
515 | ||
516 | if (w % (odev->dev_width) != 0) | |
517 | w_mem = (w/(odev->dev_width) + 1)*(odev->dev_width); | |
518 | else | |
519 | w_mem = w; | |
520 | ||
521 | if (h < ASUS_OLED_DISP_HEIGHT) | |
522 | h_mem = ASUS_OLED_DISP_HEIGHT; | |
523 | else | |
524 | h_mem = h; | |
525 | ||
526 | odev->buf_size = w_mem * h_mem / 8; | |
527 | ||
1ff12a4a | 528 | kfree(odev->buf); |
fb53440b JS |
529 | odev->buf = kmalloc(odev->buf_size, GFP_KERNEL); |
530 | ||
531 | if (odev->buf == NULL) { | |
532 | odev->buf_size = 0; | |
533 | printk(ASUS_OLED_ERROR "Out of memory!\n"); | |
534 | return -ENOMEM; | |
535 | } | |
536 | ||
537 | memset(odev->buf, 0xff, odev->buf_size); | |
538 | ||
539 | odev->buf_offs = 0; | |
540 | odev->width = w; | |
541 | odev->height = h; | |
542 | odev->x_shift = 0; | |
543 | odev->y_shift = 0; | |
544 | odev->last_val = 0; | |
545 | ||
546 | if (odev->pic_mode == ASUS_OLED_FLASH) { | |
547 | if (h < ASUS_OLED_DISP_HEIGHT/2) | |
548 | odev->y_shift = (ASUS_OLED_DISP_HEIGHT/2 - h)/2; | |
1ff12a4a | 549 | } else { |
fb53440b JS |
550 | if (h < ASUS_OLED_DISP_HEIGHT) |
551 | odev->y_shift = (ASUS_OLED_DISP_HEIGHT - h)/2; | |
552 | } | |
553 | ||
554 | if (w < (odev->dev_width)) | |
555 | odev->x_shift = ((odev->dev_width) - w)/2; | |
556 | } | |
557 | ||
558 | max_offs = odev->width * odev->height; | |
559 | ||
560 | while (offs < count && odev->buf_offs < max_offs) { | |
0d99b6eb | 561 | int ret = 0; |
fb53440b JS |
562 | |
563 | if (buf[offs] == '1' || buf[offs] == '#') { | |
94aa5b44 AH |
564 | ret = append_values(odev, 1, 1); |
565 | if (ret < 0) | |
526fd20a | 566 | return ret; |
1ff12a4a | 567 | } else if (buf[offs] == '0' || buf[offs] == ' ') { |
94aa5b44 AH |
568 | ret = append_values(odev, 0, 1); |
569 | if (ret < 0) | |
526fd20a | 570 | return ret; |
1ff12a4a KG |
571 | } else if (buf[offs] == '\n') { |
572 | /* New line detected. Lets assume, that all characters | |
573 | till the end of the line were equal to the last | |
574 | character in this line.*/ | |
fb53440b | 575 | if (odev->buf_offs % odev->width != 0) |
94aa5b44 | 576 | ret = append_values(odev, odev->last_val, |
1ff12a4a KG |
577 | odev->width - |
578 | (odev->buf_offs % | |
579 | odev->width)); | |
580 | if (ret < 0) | |
581 | return ret; | |
fb53440b JS |
582 | } |
583 | ||
584 | offs++; | |
585 | } | |
586 | ||
526fd20a AH |
587 | if (odev->buf_offs >= max_offs) |
588 | send_data(odev); | |
fb53440b JS |
589 | |
590 | return count; | |
591 | ||
592 | error_width: | |
593 | printk(ASUS_OLED_ERROR "Wrong picture width specified.\n"); | |
594 | return -EIO; | |
595 | ||
596 | error_height: | |
597 | printk(ASUS_OLED_ERROR "Wrong picture height specified.\n"); | |
598 | return -EIO; | |
599 | ||
600 | error_header: | |
601 | printk(ASUS_OLED_ERROR "Wrong picture header.\n"); | |
602 | return -EIO; | |
603 | } | |
604 | ||
1ff12a4a KG |
605 | static ssize_t set_picture(struct device *dev, struct device_attribute *attr, |
606 | const char *buf, size_t count) | |
fb53440b JS |
607 | { |
608 | struct usb_interface *intf = to_usb_interface(dev); | |
609 | ||
610 | return odev_set_picture(usb_get_intfdata(intf), buf, count); | |
611 | } | |
612 | ||
1ff12a4a KG |
613 | static ssize_t class_set_picture(struct device *device, |
614 | struct device_attribute *attr, | |
615 | const char *buf, size_t count) | |
fb53440b | 616 | { |
1ff12a4a KG |
617 | return odev_set_picture((struct asus_oled_dev *) |
618 | dev_get_drvdata(device), buf, count); | |
fb53440b JS |
619 | } |
620 | ||
621 | #define ASUS_OLED_DEVICE_ATTR(_file) dev_attr_asus_oled_##_file | |
622 | ||
1ff12a4a KG |
623 | static DEVICE_ATTR(asus_oled_enabled, S_IWUGO | S_IRUGO, |
624 | get_enabled, set_enabled); | |
fb53440b JS |
625 | static DEVICE_ATTR(asus_oled_picture, S_IWUGO , NULL, set_picture); |
626 | ||
1ff12a4a KG |
627 | static DEVICE_ATTR(enabled, S_IWUGO | S_IRUGO, |
628 | class_get_enabled, class_set_enabled); | |
fb53440b JS |
629 | static DEVICE_ATTR(picture, S_IWUGO, NULL, class_set_picture); |
630 | ||
1ff12a4a KG |
631 | static int asus_oled_probe(struct usb_interface *interface, |
632 | const struct usb_device_id *id) | |
fb53440b JS |
633 | { |
634 | struct usb_device *udev = interface_to_usbdev(interface); | |
635 | struct asus_oled_dev *odev = NULL; | |
636 | int retval = -ENOMEM; | |
637 | uint16_t dev_width = 0; | |
1ff12a4a KG |
638 | enum oled_pack_mode pack_mode = PACK_MODE_LAST; |
639 | const struct oled_dev_desc_str *dev_desc = oled_dev_desc_table; | |
ccdb2459 | 640 | const char *desc = NULL; |
fb53440b | 641 | |
ccdb2459 | 642 | if (!id) { |
1ff12a4a | 643 | /* Even possible? Just to make sure...*/ |
fb53440b JS |
644 | dev_err(&interface->dev, "No usb_device_id provided!\n"); |
645 | return -ENODEV; | |
646 | } | |
647 | ||
1ff12a4a | 648 | for (; dev_desc->idVendor; dev_desc++) { |
fb53440b | 649 | if (dev_desc->idVendor == id->idVendor |
1ff12a4a | 650 | && dev_desc->idProduct == id->idProduct) { |
fb53440b JS |
651 | dev_width = dev_desc->devWidth; |
652 | desc = dev_desc->devDesc; | |
653 | pack_mode = dev_desc->packMode; | |
654 | break; | |
655 | } | |
656 | } | |
657 | ||
118015c4 | 658 | if (!desc || dev_width < 1 || pack_mode == PACK_MODE_LAST) { |
1ff12a4a KG |
659 | dev_err(&interface->dev, |
660 | "Missing or incomplete device description!\n"); | |
fb53440b JS |
661 | return -ENODEV; |
662 | } | |
663 | ||
664 | odev = kzalloc(sizeof(struct asus_oled_dev), GFP_KERNEL); | |
665 | ||
666 | if (odev == NULL) { | |
667 | dev_err(&interface->dev, "Out of memory\n"); | |
668 | return -ENOMEM; | |
669 | } | |
670 | ||
671 | odev->udev = usb_get_dev(udev); | |
672 | odev->pic_mode = ASUS_OLED_STATIC; | |
673 | odev->dev_width = dev_width; | |
674 | odev->pack_mode = pack_mode; | |
675 | odev->height = 0; | |
676 | odev->width = 0; | |
677 | odev->x_shift = 0; | |
678 | odev->y_shift = 0; | |
679 | odev->buf_offs = 0; | |
680 | odev->buf_size = 0; | |
681 | odev->last_val = 0; | |
682 | odev->buf = NULL; | |
683 | odev->enabled = 1; | |
ccdb2459 | 684 | odev->dev = NULL; |
fb53440b | 685 | |
118015c4 | 686 | usb_set_intfdata(interface, odev); |
fb53440b | 687 | |
1ff12a4a KG |
688 | retval = device_create_file(&interface->dev, |
689 | &ASUS_OLED_DEVICE_ATTR(enabled)); | |
94aa5b44 | 690 | if (retval) |
fb53440b | 691 | goto err_files; |
fb53440b | 692 | |
1ff12a4a KG |
693 | retval = device_create_file(&interface->dev, |
694 | &ASUS_OLED_DEVICE_ATTR(picture)); | |
94aa5b44 | 695 | if (retval) |
fb53440b | 696 | goto err_files; |
fb53440b | 697 | |
118015c4 | 698 | odev->dev = device_create(oled_class, &interface->dev, MKDEV(0, 0), |
1ff12a4a | 699 | NULL, "oled_%d", ++oled_num); |
fb53440b JS |
700 | |
701 | if (IS_ERR(odev->dev)) { | |
702 | retval = PTR_ERR(odev->dev); | |
703 | goto err_files; | |
704 | } | |
705 | ||
706 | dev_set_drvdata(odev->dev, odev); | |
707 | ||
94aa5b44 AH |
708 | retval = device_create_file(odev->dev, &dev_attr_enabled); |
709 | if (retval) | |
fb53440b | 710 | goto err_class_enabled; |
fb53440b | 711 | |
94aa5b44 AH |
712 | retval = device_create_file(odev->dev, &dev_attr_picture); |
713 | if (retval) | |
fb53440b | 714 | goto err_class_picture; |
fb53440b | 715 | |
1ff12a4a KG |
716 | dev_info(&interface->dev, |
717 | "Attached Asus OLED device: %s [width %u, pack_mode %d]\n", | |
718 | desc, odev->dev_width, odev->pack_mode); | |
fb53440b JS |
719 | |
720 | if (start_off) | |
721 | enable_oled(odev, 0); | |
722 | ||
723 | return 0; | |
724 | ||
725 | err_class_picture: | |
726 | device_remove_file(odev->dev, &dev_attr_picture); | |
727 | ||
728 | err_class_enabled: | |
729 | device_remove_file(odev->dev, &dev_attr_enabled); | |
730 | device_unregister(odev->dev); | |
731 | ||
732 | err_files: | |
733 | device_remove_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(enabled)); | |
734 | device_remove_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(picture)); | |
735 | ||
118015c4 | 736 | usb_set_intfdata(interface, NULL); |
fb53440b JS |
737 | usb_put_dev(odev->udev); |
738 | kfree(odev); | |
739 | ||
740 | return retval; | |
741 | } | |
742 | ||
743 | static void asus_oled_disconnect(struct usb_interface *interface) | |
744 | { | |
745 | struct asus_oled_dev *odev; | |
746 | ||
118015c4 AH |
747 | odev = usb_get_intfdata(interface); |
748 | usb_set_intfdata(interface, NULL); | |
fb53440b JS |
749 | |
750 | device_remove_file(odev->dev, &dev_attr_picture); | |
751 | device_remove_file(odev->dev, &dev_attr_enabled); | |
752 | device_unregister(odev->dev); | |
753 | ||
118015c4 AH |
754 | device_remove_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(picture)); |
755 | device_remove_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(enabled)); | |
fb53440b JS |
756 | |
757 | usb_put_dev(odev->udev); | |
758 | ||
1ff12a4a | 759 | kfree(odev->buf); |
fb53440b JS |
760 | |
761 | kfree(odev); | |
762 | ||
763 | dev_info(&interface->dev, "Disconnected Asus OLED device\n"); | |
764 | } | |
765 | ||
766 | static struct usb_driver oled_driver = { | |
767 | .name = ASUS_OLED_NAME, | |
768 | .probe = asus_oled_probe, | |
769 | .disconnect = asus_oled_disconnect, | |
770 | .id_table = id_table, | |
771 | }; | |
772 | ||
0933e2d9 | 773 | static CLASS_ATTR_STRING(version, S_IRUGO, |
e67fdbc3 | 774 | ASUS_OLED_UNDERSCORE_NAME " " ASUS_OLED_VERSION); |
fb53440b JS |
775 | |
776 | static int __init asus_oled_init(void) | |
777 | { | |
778 | int retval = 0; | |
779 | oled_class = class_create(THIS_MODULE, ASUS_OLED_UNDERSCORE_NAME); | |
780 | ||
781 | if (IS_ERR(oled_class)) { | |
782 | err("Error creating " ASUS_OLED_UNDERSCORE_NAME " class"); | |
783 | return PTR_ERR(oled_class); | |
784 | } | |
785 | ||
0933e2d9 | 786 | retval = class_create_file(oled_class, &class_attr_version.attr); |
94aa5b44 | 787 | if (retval) { |
fb53440b JS |
788 | err("Error creating class version file"); |
789 | goto error; | |
790 | } | |
791 | ||
792 | retval = usb_register(&oled_driver); | |
793 | ||
794 | if (retval) { | |
795 | err("usb_register failed. Error number %d", retval); | |
796 | goto error; | |
797 | } | |
798 | ||
799 | return retval; | |
800 | ||
801 | error: | |
802 | class_destroy(oled_class); | |
803 | return retval; | |
804 | } | |
805 | ||
806 | static void __exit asus_oled_exit(void) | |
807 | { | |
0933e2d9 | 808 | class_remove_file(oled_class, &class_attr_version.attr); |
fb53440b JS |
809 | class_destroy(oled_class); |
810 | ||
811 | usb_deregister(&oled_driver); | |
812 | } | |
813 | ||
118015c4 AH |
814 | module_init(asus_oled_init); |
815 | module_exit(asus_oled_exit); | |
fb53440b | 816 |