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236db47c BP |
1 | /*************************************************************************** |
2 | * Copyright (C) 2010 by Bruno Prémont <bonbons@linux-vserver.org> * | |
3 | * * | |
4 | * Based on Logitech G13 driver (v0.4) * | |
5 | * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> * | |
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, version 2 of the License. * | |
10 | * * | |
11 | * This driver is distributed in the hope that it will be useful, but * | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of * | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * | |
14 | * General Public License for more details. * | |
15 | * * | |
16 | * You should have received a copy of the GNU General Public License * | |
17 | * along with this software. If not see <http://www.gnu.org/licenses/>. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | #include <linux/hid.h> | |
21 | #include <linux/hid-debug.h> | |
22 | #include <linux/input.h> | |
23 | #include "hid-ids.h" | |
24 | #include "usbhid/usbhid.h" | |
25 | #include <linux/usb.h> | |
26 | ||
b8c21cf6 BP |
27 | #include <linux/fb.h> |
28 | #include <linux/vmalloc.h> | |
f1c21761 | 29 | #include <linux/backlight.h> |
e8d931bb | 30 | #include <linux/lcd.h> |
b8c21cf6 | 31 | |
467d6523 BP |
32 | #include <linux/leds.h> |
33 | ||
236db47c BP |
34 | #include <linux/seq_file.h> |
35 | #include <linux/debugfs.h> | |
36 | ||
37 | #include <linux/completion.h> | |
eb741103 | 38 | #include <linux/uaccess.h> |
8f86a2c3 | 39 | #include <linux/module.h> |
236db47c BP |
40 | |
41 | #define PICOLCD_NAME "PicoLCD (graphic)" | |
42 | ||
43 | /* Report numbers */ | |
44 | #define REPORT_ERROR_CODE 0x10 /* LCD: IN[16] */ | |
45 | #define ERR_SUCCESS 0x00 | |
46 | #define ERR_PARAMETER_MISSING 0x01 | |
47 | #define ERR_DATA_MISSING 0x02 | |
48 | #define ERR_BLOCK_READ_ONLY 0x03 | |
49 | #define ERR_BLOCK_NOT_ERASABLE 0x04 | |
50 | #define ERR_BLOCK_TOO_BIG 0x05 | |
51 | #define ERR_SECTION_OVERFLOW 0x06 | |
52 | #define ERR_INVALID_CMD_LEN 0x07 | |
53 | #define ERR_INVALID_DATA_LEN 0x08 | |
54 | #define REPORT_KEY_STATE 0x11 /* LCD: IN[2] */ | |
55 | #define REPORT_IR_DATA 0x21 /* LCD: IN[63] */ | |
56 | #define REPORT_EE_DATA 0x32 /* LCD: IN[63] */ | |
57 | #define REPORT_MEMORY 0x41 /* LCD: IN[63] */ | |
58 | #define REPORT_LED_STATE 0x81 /* LCD: OUT[1] */ | |
59 | #define REPORT_BRIGHTNESS 0x91 /* LCD: OUT[1] */ | |
60 | #define REPORT_CONTRAST 0x92 /* LCD: OUT[1] */ | |
61 | #define REPORT_RESET 0x93 /* LCD: OUT[2] */ | |
62 | #define REPORT_LCD_CMD 0x94 /* LCD: OUT[63] */ | |
63 | #define REPORT_LCD_DATA 0x95 /* LCD: OUT[63] */ | |
64 | #define REPORT_LCD_CMD_DATA 0x96 /* LCD: OUT[63] */ | |
65 | #define REPORT_EE_READ 0xa3 /* LCD: OUT[63] */ | |
66 | #define REPORT_EE_WRITE 0xa4 /* LCD: OUT[63] */ | |
67 | #define REPORT_ERASE_MEMORY 0xb2 /* LCD: OUT[2] */ | |
68 | #define REPORT_READ_MEMORY 0xb3 /* LCD: OUT[3] */ | |
69 | #define REPORT_WRITE_MEMORY 0xb4 /* LCD: OUT[63] */ | |
70 | #define REPORT_SPLASH_RESTART 0xc1 /* LCD: OUT[1] */ | |
71 | #define REPORT_EXIT_KEYBOARD 0xef /* LCD: OUT[2] */ | |
72 | #define REPORT_VERSION 0xf1 /* LCD: IN[2],OUT[1] Bootloader: IN[2],OUT[1] */ | |
73 | #define REPORT_BL_ERASE_MEMORY 0xf2 /* Bootloader: IN[36],OUT[4] */ | |
74 | #define REPORT_BL_READ_MEMORY 0xf3 /* Bootloader: IN[36],OUT[4] */ | |
75 | #define REPORT_BL_WRITE_MEMORY 0xf4 /* Bootloader: IN[36],OUT[36] */ | |
76 | #define REPORT_DEVID 0xf5 /* LCD: IN[5], OUT[1] Bootloader: IN[5],OUT[1] */ | |
77 | #define REPORT_SPLASH_SIZE 0xf6 /* LCD: IN[4], OUT[1] */ | |
78 | #define REPORT_HOOK_VERSION 0xf7 /* LCD: IN[2], OUT[1] */ | |
79 | #define REPORT_EXIT_FLASHER 0xff /* Bootloader: OUT[2] */ | |
80 | ||
5435f281 | 81 | #ifdef CONFIG_HID_PICOLCD_FB |
b8c21cf6 BP |
82 | /* Framebuffer |
83 | * | |
84 | * The PicoLCD use a Topway LCD module of 256x64 pixel | |
85 | * This display area is tiled over 4 controllers with 8 tiles | |
86 | * each. Each tile has 8x64 pixel, each data byte representing | |
87 | * a 1-bit wide vertical line of the tile. | |
88 | * | |
89 | * The display can be updated at a tile granularity. | |
90 | * | |
91 | * Chip 1 Chip 2 Chip 3 Chip 4 | |
92 | * +----------------+----------------+----------------+----------------+ | |
93 | * | Tile 1 | Tile 1 | Tile 1 | Tile 1 | | |
94 | * +----------------+----------------+----------------+----------------+ | |
95 | * | Tile 2 | Tile 2 | Tile 2 | Tile 2 | | |
96 | * +----------------+----------------+----------------+----------------+ | |
97 | * ... | |
98 | * +----------------+----------------+----------------+----------------+ | |
99 | * | Tile 8 | Tile 8 | Tile 8 | Tile 8 | | |
100 | * +----------------+----------------+----------------+----------------+ | |
101 | */ | |
102 | #define PICOLCDFB_NAME "picolcdfb" | |
103 | #define PICOLCDFB_WIDTH (256) | |
104 | #define PICOLCDFB_HEIGHT (64) | |
105 | #define PICOLCDFB_SIZE (PICOLCDFB_WIDTH * PICOLCDFB_HEIGHT / 8) | |
106 | ||
107 | #define PICOLCDFB_UPDATE_RATE_LIMIT 10 | |
108 | #define PICOLCDFB_UPDATE_RATE_DEFAULT 2 | |
109 | ||
110 | /* Framebuffer visual structures */ | |
111 | static const struct fb_fix_screeninfo picolcdfb_fix = { | |
112 | .id = PICOLCDFB_NAME, | |
113 | .type = FB_TYPE_PACKED_PIXELS, | |
114 | .visual = FB_VISUAL_MONO01, | |
115 | .xpanstep = 0, | |
116 | .ypanstep = 0, | |
117 | .ywrapstep = 0, | |
118 | .line_length = PICOLCDFB_WIDTH / 8, | |
119 | .accel = FB_ACCEL_NONE, | |
120 | }; | |
121 | ||
122 | static const struct fb_var_screeninfo picolcdfb_var = { | |
123 | .xres = PICOLCDFB_WIDTH, | |
124 | .yres = PICOLCDFB_HEIGHT, | |
125 | .xres_virtual = PICOLCDFB_WIDTH, | |
126 | .yres_virtual = PICOLCDFB_HEIGHT, | |
127 | .width = 103, | |
128 | .height = 26, | |
129 | .bits_per_pixel = 1, | |
130 | .grayscale = 1, | |
b70884ff BP |
131 | .red = { |
132 | .offset = 0, | |
133 | .length = 1, | |
134 | .msb_right = 0, | |
135 | }, | |
136 | .green = { | |
137 | .offset = 0, | |
138 | .length = 1, | |
139 | .msb_right = 0, | |
140 | }, | |
141 | .blue = { | |
142 | .offset = 0, | |
143 | .length = 1, | |
144 | .msb_right = 0, | |
145 | }, | |
146 | .transp = { | |
147 | .offset = 0, | |
148 | .length = 0, | |
149 | .msb_right = 0, | |
150 | }, | |
b8c21cf6 | 151 | }; |
5435f281 | 152 | #endif /* CONFIG_HID_PICOLCD_FB */ |
b8c21cf6 | 153 | |
236db47c BP |
154 | /* Input device |
155 | * | |
156 | * The PicoLCD has an IR receiver header, a built-in keypad with 5 keys | |
157 | * and header for 4x4 key matrix. The built-in keys are part of the matrix. | |
158 | */ | |
159 | static const unsigned short def_keymap[] = { | |
160 | KEY_RESERVED, /* none */ | |
161 | KEY_BACK, /* col 4 + row 1 */ | |
162 | KEY_HOMEPAGE, /* col 3 + row 1 */ | |
163 | KEY_RESERVED, /* col 2 + row 1 */ | |
164 | KEY_RESERVED, /* col 1 + row 1 */ | |
165 | KEY_SCROLLUP, /* col 4 + row 2 */ | |
166 | KEY_OK, /* col 3 + row 2 */ | |
167 | KEY_SCROLLDOWN, /* col 2 + row 2 */ | |
168 | KEY_RESERVED, /* col 1 + row 2 */ | |
169 | KEY_RESERVED, /* col 4 + row 3 */ | |
170 | KEY_RESERVED, /* col 3 + row 3 */ | |
171 | KEY_RESERVED, /* col 2 + row 3 */ | |
172 | KEY_RESERVED, /* col 1 + row 3 */ | |
173 | KEY_RESERVED, /* col 4 + row 4 */ | |
174 | KEY_RESERVED, /* col 3 + row 4 */ | |
175 | KEY_RESERVED, /* col 2 + row 4 */ | |
176 | KEY_RESERVED, /* col 1 + row 4 */ | |
177 | }; | |
178 | #define PICOLCD_KEYS ARRAY_SIZE(def_keymap) | |
179 | ||
180 | /* Description of in-progress IO operation, used for operations | |
181 | * that trigger response from device */ | |
182 | struct picolcd_pending { | |
183 | struct hid_report *out_report; | |
184 | struct hid_report *in_report; | |
185 | struct completion ready; | |
186 | int raw_size; | |
187 | u8 raw_data[64]; | |
188 | }; | |
189 | ||
190 | /* Per device data structure */ | |
191 | struct picolcd_data { | |
192 | struct hid_device *hdev; | |
193 | #ifdef CONFIG_DEBUG_FS | |
9bbf2b98 BP |
194 | struct dentry *debug_reset; |
195 | struct dentry *debug_eeprom; | |
196 | struct dentry *debug_flash; | |
197 | struct mutex mutex_flash; | |
236db47c BP |
198 | int addr_sz; |
199 | #endif | |
200 | u8 version[2]; | |
0b5adf92 | 201 | unsigned short opmode_delay; |
236db47c BP |
202 | /* input stuff */ |
203 | u8 pressed_keys[2]; | |
204 | struct input_dev *input_keys; | |
205 | struct input_dev *input_cir; | |
206 | unsigned short keycode[PICOLCD_KEYS]; | |
207 | ||
5435f281 | 208 | #ifdef CONFIG_HID_PICOLCD_FB |
b8c21cf6 BP |
209 | /* Framebuffer stuff */ |
210 | u8 fb_update_rate; | |
211 | u8 fb_bpp; | |
b70884ff | 212 | u8 fb_force; |
b8c21cf6 BP |
213 | u8 *fb_vbitmap; /* local copy of what was sent to PicoLCD */ |
214 | u8 *fb_bitmap; /* framebuffer */ | |
215 | struct fb_info *fb_info; | |
216 | struct fb_deferred_io fb_defio; | |
5435f281 BP |
217 | #endif /* CONFIG_HID_PICOLCD_FB */ |
218 | #ifdef CONFIG_HID_PICOLCD_LCD | |
e8d931bb BP |
219 | struct lcd_device *lcd; |
220 | u8 lcd_contrast; | |
5435f281 BP |
221 | #endif /* CONFIG_HID_PICOLCD_LCD */ |
222 | #ifdef CONFIG_HID_PICOLCD_BACKLIGHT | |
f1c21761 BP |
223 | struct backlight_device *backlight; |
224 | u8 lcd_brightness; | |
225 | u8 lcd_power; | |
5435f281 BP |
226 | #endif /* CONFIG_HID_PICOLCD_BACKLIGHT */ |
227 | #ifdef CONFIG_HID_PICOLCD_LEDS | |
467d6523 BP |
228 | /* LED stuff */ |
229 | u8 led_state; | |
230 | struct led_classdev *led[8]; | |
5435f281 | 231 | #endif /* CONFIG_HID_PICOLCD_LEDS */ |
b8c21cf6 | 232 | |
236db47c BP |
233 | /* Housekeeping stuff */ |
234 | spinlock_t lock; | |
235 | struct mutex mutex; | |
236 | struct picolcd_pending *pending; | |
237 | int status; | |
238 | #define PICOLCD_BOOTLOADER 1 | |
239 | #define PICOLCD_FAILED 2 | |
b8c21cf6 | 240 | #define PICOLCD_READY_FB 4 |
236db47c BP |
241 | }; |
242 | ||
243 | ||
244 | /* Find a given report */ | |
245 | #define picolcd_in_report(id, dev) picolcd_report(id, dev, HID_INPUT_REPORT) | |
246 | #define picolcd_out_report(id, dev) picolcd_report(id, dev, HID_OUTPUT_REPORT) | |
247 | ||
248 | static struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir) | |
249 | { | |
250 | struct list_head *feature_report_list = &hdev->report_enum[dir].report_list; | |
251 | struct hid_report *report = NULL; | |
252 | ||
253 | list_for_each_entry(report, feature_report_list, list) { | |
254 | if (report->id == id) | |
255 | return report; | |
256 | } | |
4291ee30 | 257 | hid_warn(hdev, "No report with id 0x%x found\n", id); |
236db47c BP |
258 | return NULL; |
259 | } | |
260 | ||
261 | #ifdef CONFIG_DEBUG_FS | |
262 | static void picolcd_debug_out_report(struct picolcd_data *data, | |
263 | struct hid_device *hdev, struct hid_report *report); | |
264 | #define usbhid_submit_report(a, b, c) \ | |
265 | do { \ | |
266 | picolcd_debug_out_report(hid_get_drvdata(a), a, b); \ | |
267 | usbhid_submit_report(a, b, c); \ | |
268 | } while (0) | |
269 | #endif | |
270 | ||
271 | /* Submit a report and wait for a reply from device - if device fades away | |
272 | * or does not respond in time, return NULL */ | |
273 | static struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev, | |
274 | int report_id, const u8 *raw_data, int size) | |
275 | { | |
276 | struct picolcd_data *data = hid_get_drvdata(hdev); | |
277 | struct picolcd_pending *work; | |
278 | struct hid_report *report = picolcd_out_report(report_id, hdev); | |
279 | unsigned long flags; | |
280 | int i, j, k; | |
281 | ||
282 | if (!report || !data) | |
283 | return NULL; | |
284 | if (data->status & PICOLCD_FAILED) | |
285 | return NULL; | |
286 | work = kzalloc(sizeof(*work), GFP_KERNEL); | |
287 | if (!work) | |
288 | return NULL; | |
289 | ||
290 | init_completion(&work->ready); | |
291 | work->out_report = report; | |
292 | work->in_report = NULL; | |
293 | work->raw_size = 0; | |
294 | ||
295 | mutex_lock(&data->mutex); | |
296 | spin_lock_irqsave(&data->lock, flags); | |
297 | for (i = k = 0; i < report->maxfield; i++) | |
298 | for (j = 0; j < report->field[i]->report_count; j++) { | |
299 | hid_set_field(report->field[i], j, k < size ? raw_data[k] : 0); | |
300 | k++; | |
301 | } | |
302 | data->pending = work; | |
303 | usbhid_submit_report(data->hdev, report, USB_DIR_OUT); | |
304 | spin_unlock_irqrestore(&data->lock, flags); | |
305 | wait_for_completion_interruptible_timeout(&work->ready, HZ*2); | |
306 | spin_lock_irqsave(&data->lock, flags); | |
307 | data->pending = NULL; | |
308 | spin_unlock_irqrestore(&data->lock, flags); | |
309 | mutex_unlock(&data->mutex); | |
310 | return work; | |
311 | } | |
312 | ||
5435f281 | 313 | #ifdef CONFIG_HID_PICOLCD_FB |
b8c21cf6 BP |
314 | /* Send a given tile to PicoLCD */ |
315 | static int picolcd_fb_send_tile(struct hid_device *hdev, int chip, int tile) | |
316 | { | |
317 | struct picolcd_data *data = hid_get_drvdata(hdev); | |
318 | struct hid_report *report1 = picolcd_out_report(REPORT_LCD_CMD_DATA, hdev); | |
319 | struct hid_report *report2 = picolcd_out_report(REPORT_LCD_DATA, hdev); | |
320 | unsigned long flags; | |
321 | u8 *tdata; | |
322 | int i; | |
323 | ||
324 | if (!report1 || report1->maxfield != 1 || !report2 || report2->maxfield != 1) | |
325 | return -ENODEV; | |
326 | ||
327 | spin_lock_irqsave(&data->lock, flags); | |
328 | hid_set_field(report1->field[0], 0, chip << 2); | |
329 | hid_set_field(report1->field[0], 1, 0x02); | |
330 | hid_set_field(report1->field[0], 2, 0x00); | |
331 | hid_set_field(report1->field[0], 3, 0x00); | |
332 | hid_set_field(report1->field[0], 4, 0xb8 | tile); | |
333 | hid_set_field(report1->field[0], 5, 0x00); | |
334 | hid_set_field(report1->field[0], 6, 0x00); | |
335 | hid_set_field(report1->field[0], 7, 0x40); | |
336 | hid_set_field(report1->field[0], 8, 0x00); | |
337 | hid_set_field(report1->field[0], 9, 0x00); | |
338 | hid_set_field(report1->field[0], 10, 32); | |
339 | ||
340 | hid_set_field(report2->field[0], 0, (chip << 2) | 0x01); | |
341 | hid_set_field(report2->field[0], 1, 0x00); | |
342 | hid_set_field(report2->field[0], 2, 0x00); | |
343 | hid_set_field(report2->field[0], 3, 32); | |
344 | ||
345 | tdata = data->fb_vbitmap + (tile * 4 + chip) * 64; | |
346 | for (i = 0; i < 64; i++) | |
347 | if (i < 32) | |
348 | hid_set_field(report1->field[0], 11 + i, tdata[i]); | |
349 | else | |
350 | hid_set_field(report2->field[0], 4 + i - 32, tdata[i]); | |
351 | ||
352 | usbhid_submit_report(data->hdev, report1, USB_DIR_OUT); | |
353 | usbhid_submit_report(data->hdev, report2, USB_DIR_OUT); | |
354 | spin_unlock_irqrestore(&data->lock, flags); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | /* Translate a single tile*/ | |
359 | static int picolcd_fb_update_tile(u8 *vbitmap, const u8 *bitmap, int bpp, | |
360 | int chip, int tile) | |
361 | { | |
362 | int i, b, changed = 0; | |
363 | u8 tdata[64]; | |
364 | u8 *vdata = vbitmap + (tile * 4 + chip) * 64; | |
365 | ||
366 | if (bpp == 1) { | |
367 | for (b = 7; b >= 0; b--) { | |
368 | const u8 *bdata = bitmap + tile * 256 + chip * 8 + b * 32; | |
369 | for (i = 0; i < 64; i++) { | |
370 | tdata[i] <<= 1; | |
b70884ff | 371 | tdata[i] |= (bdata[i/8] >> (i % 8)) & 0x01; |
b8c21cf6 BP |
372 | } |
373 | } | |
374 | } else if (bpp == 8) { | |
375 | for (b = 7; b >= 0; b--) { | |
376 | const u8 *bdata = bitmap + (tile * 256 + chip * 8 + b * 32) * 8; | |
377 | for (i = 0; i < 64; i++) { | |
378 | tdata[i] <<= 1; | |
379 | tdata[i] |= (bdata[i] & 0x80) ? 0x01 : 0x00; | |
380 | } | |
381 | } | |
382 | } else { | |
383 | /* Oops, we should never get here! */ | |
384 | WARN_ON(1); | |
385 | return 0; | |
386 | } | |
387 | ||
388 | for (i = 0; i < 64; i++) | |
389 | if (tdata[i] != vdata[i]) { | |
390 | changed = 1; | |
391 | vdata[i] = tdata[i]; | |
392 | } | |
393 | return changed; | |
394 | } | |
395 | ||
396 | /* Reconfigure LCD display */ | |
397 | static int picolcd_fb_reset(struct picolcd_data *data, int clear) | |
398 | { | |
399 | struct hid_report *report = picolcd_out_report(REPORT_LCD_CMD, data->hdev); | |
400 | int i, j; | |
401 | unsigned long flags; | |
402 | static const u8 mapcmd[8] = { 0x00, 0x02, 0x00, 0x64, 0x3f, 0x00, 0x64, 0xc0 }; | |
403 | ||
404 | if (!report || report->maxfield != 1) | |
405 | return -ENODEV; | |
406 | ||
407 | spin_lock_irqsave(&data->lock, flags); | |
408 | for (i = 0; i < 4; i++) { | |
409 | for (j = 0; j < report->field[0]->maxusage; j++) | |
410 | if (j == 0) | |
411 | hid_set_field(report->field[0], j, i << 2); | |
412 | else if (j < sizeof(mapcmd)) | |
413 | hid_set_field(report->field[0], j, mapcmd[j]); | |
414 | else | |
415 | hid_set_field(report->field[0], j, 0); | |
416 | usbhid_submit_report(data->hdev, report, USB_DIR_OUT); | |
417 | } | |
418 | ||
419 | data->status |= PICOLCD_READY_FB; | |
420 | spin_unlock_irqrestore(&data->lock, flags); | |
421 | ||
422 | if (data->fb_bitmap) { | |
423 | if (clear) { | |
b70884ff | 424 | memset(data->fb_vbitmap, 0, PICOLCDFB_SIZE); |
b8c21cf6 | 425 | memset(data->fb_bitmap, 0, PICOLCDFB_SIZE*data->fb_bpp); |
b8c21cf6 | 426 | } |
b70884ff | 427 | data->fb_force = 1; |
b8c21cf6 BP |
428 | } |
429 | ||
430 | /* schedule first output of framebuffer */ | |
431 | if (data->fb_info) | |
432 | schedule_delayed_work(&data->fb_info->deferred_work, 0); | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
437 | /* Update fb_vbitmap from the screen_base and send changed tiles to device */ | |
438 | static void picolcd_fb_update(struct picolcd_data *data) | |
439 | { | |
440 | int chip, tile, n; | |
441 | unsigned long flags; | |
442 | ||
225b4590 BP |
443 | if (!data) |
444 | return; | |
445 | ||
b8c21cf6 BP |
446 | spin_lock_irqsave(&data->lock, flags); |
447 | if (!(data->status & PICOLCD_READY_FB)) { | |
448 | spin_unlock_irqrestore(&data->lock, flags); | |
449 | picolcd_fb_reset(data, 0); | |
450 | } else { | |
451 | spin_unlock_irqrestore(&data->lock, flags); | |
452 | } | |
453 | ||
454 | /* | |
455 | * Translate the framebuffer into the format needed by the PicoLCD. | |
456 | * See display layout above. | |
457 | * Do this one tile after the other and push those tiles that changed. | |
458 | * | |
459 | * Wait for our IO to complete as otherwise we might flood the queue! | |
460 | */ | |
461 | n = 0; | |
462 | for (chip = 0; chip < 4; chip++) | |
463 | for (tile = 0; tile < 8; tile++) | |
464 | if (picolcd_fb_update_tile(data->fb_vbitmap, | |
b70884ff BP |
465 | data->fb_bitmap, data->fb_bpp, chip, tile) || |
466 | data->fb_force) { | |
b8c21cf6 | 467 | n += 2; |
225b4590 BP |
468 | if (!data->fb_info->par) |
469 | return; /* device lost! */ | |
b8c21cf6 BP |
470 | if (n >= HID_OUTPUT_FIFO_SIZE / 2) { |
471 | usbhid_wait_io(data->hdev); | |
472 | n = 0; | |
473 | } | |
474 | picolcd_fb_send_tile(data->hdev, chip, tile); | |
475 | } | |
b70884ff | 476 | data->fb_force = false; |
b8c21cf6 BP |
477 | if (n) |
478 | usbhid_wait_io(data->hdev); | |
479 | } | |
480 | ||
481 | /* Stub to call the system default and update the image on the picoLCD */ | |
482 | static void picolcd_fb_fillrect(struct fb_info *info, | |
483 | const struct fb_fillrect *rect) | |
484 | { | |
485 | if (!info->par) | |
486 | return; | |
487 | sys_fillrect(info, rect); | |
488 | ||
489 | schedule_delayed_work(&info->deferred_work, 0); | |
490 | } | |
491 | ||
492 | /* Stub to call the system default and update the image on the picoLCD */ | |
493 | static void picolcd_fb_copyarea(struct fb_info *info, | |
494 | const struct fb_copyarea *area) | |
495 | { | |
496 | if (!info->par) | |
497 | return; | |
498 | sys_copyarea(info, area); | |
499 | ||
500 | schedule_delayed_work(&info->deferred_work, 0); | |
501 | } | |
502 | ||
503 | /* Stub to call the system default and update the image on the picoLCD */ | |
504 | static void picolcd_fb_imageblit(struct fb_info *info, const struct fb_image *image) | |
505 | { | |
506 | if (!info->par) | |
507 | return; | |
508 | sys_imageblit(info, image); | |
509 | ||
510 | schedule_delayed_work(&info->deferred_work, 0); | |
511 | } | |
512 | ||
513 | /* | |
514 | * this is the slow path from userspace. they can seek and write to | |
515 | * the fb. it's inefficient to do anything less than a full screen draw | |
516 | */ | |
517 | static ssize_t picolcd_fb_write(struct fb_info *info, const char __user *buf, | |
518 | size_t count, loff_t *ppos) | |
519 | { | |
520 | ssize_t ret; | |
521 | if (!info->par) | |
522 | return -ENODEV; | |
523 | ret = fb_sys_write(info, buf, count, ppos); | |
524 | if (ret >= 0) | |
525 | schedule_delayed_work(&info->deferred_work, 0); | |
526 | return ret; | |
527 | } | |
528 | ||
529 | static int picolcd_fb_blank(int blank, struct fb_info *info) | |
530 | { | |
531 | if (!info->par) | |
532 | return -ENODEV; | |
533 | /* We let fb notification do this for us via lcd/backlight device */ | |
534 | return 0; | |
535 | } | |
536 | ||
537 | static void picolcd_fb_destroy(struct fb_info *info) | |
538 | { | |
539 | struct picolcd_data *data = info->par; | |
225b4590 BP |
540 | u32 *ref_cnt = info->pseudo_palette; |
541 | int may_release; | |
542 | ||
b8c21cf6 BP |
543 | info->par = NULL; |
544 | if (data) | |
545 | data->fb_info = NULL; | |
546 | fb_deferred_io_cleanup(info); | |
225b4590 BP |
547 | |
548 | ref_cnt--; | |
549 | mutex_lock(&info->lock); | |
550 | (*ref_cnt)--; | |
a1060250 | 551 | may_release = !*ref_cnt; |
225b4590 BP |
552 | mutex_unlock(&info->lock); |
553 | if (may_release) { | |
225b4590 | 554 | vfree((u8 *)info->fix.smem_start); |
1778ca29 | 555 | framebuffer_release(info); |
225b4590 | 556 | } |
b8c21cf6 BP |
557 | } |
558 | ||
559 | static int picolcd_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
560 | { | |
561 | __u32 bpp = var->bits_per_pixel; | |
562 | __u32 activate = var->activate; | |
563 | ||
564 | /* only allow 1/8 bit depth (8-bit is grayscale) */ | |
565 | *var = picolcdfb_var; | |
566 | var->activate = activate; | |
b70884ff | 567 | if (bpp >= 8) { |
b8c21cf6 | 568 | var->bits_per_pixel = 8; |
b70884ff BP |
569 | var->red.length = 8; |
570 | var->green.length = 8; | |
571 | var->blue.length = 8; | |
572 | } else { | |
b8c21cf6 | 573 | var->bits_per_pixel = 1; |
b70884ff BP |
574 | var->red.length = 1; |
575 | var->green.length = 1; | |
576 | var->blue.length = 1; | |
577 | } | |
b8c21cf6 BP |
578 | return 0; |
579 | } | |
580 | ||
581 | static int picolcd_set_par(struct fb_info *info) | |
582 | { | |
583 | struct picolcd_data *data = info->par; | |
365f1fcd | 584 | u8 *tmp_fb, *o_fb; |
225b4590 BP |
585 | if (!data) |
586 | return -ENODEV; | |
b8c21cf6 BP |
587 | if (info->var.bits_per_pixel == data->fb_bpp) |
588 | return 0; | |
589 | /* switch between 1/8 bit depths */ | |
590 | if (info->var.bits_per_pixel != 1 && info->var.bits_per_pixel != 8) | |
591 | return -EINVAL; | |
592 | ||
365f1fcd BP |
593 | o_fb = data->fb_bitmap; |
594 | tmp_fb = kmalloc(PICOLCDFB_SIZE*info->var.bits_per_pixel, GFP_KERNEL); | |
595 | if (!tmp_fb) | |
b8c21cf6 BP |
596 | return -ENOMEM; |
597 | ||
b8c21cf6 BP |
598 | /* translate FB content to new bits-per-pixel */ |
599 | if (info->var.bits_per_pixel == 1) { | |
600 | int i, b; | |
601 | for (i = 0; i < PICOLCDFB_SIZE; i++) { | |
602 | u8 p = 0; | |
603 | for (b = 0; b < 8; b++) { | |
604 | p <<= 1; | |
605 | p |= o_fb[i*8+b] ? 0x01 : 0x00; | |
606 | } | |
365f1fcd | 607 | tmp_fb[i] = p; |
b8c21cf6 | 608 | } |
365f1fcd | 609 | memcpy(o_fb, tmp_fb, PICOLCDFB_SIZE); |
b8c21cf6 BP |
610 | info->fix.visual = FB_VISUAL_MONO01; |
611 | info->fix.line_length = PICOLCDFB_WIDTH / 8; | |
612 | } else { | |
613 | int i; | |
365f1fcd | 614 | memcpy(tmp_fb, o_fb, PICOLCDFB_SIZE); |
b8c21cf6 | 615 | for (i = 0; i < PICOLCDFB_SIZE * 8; i++) |
365f1fcd BP |
616 | o_fb[i] = tmp_fb[i/8] & (0x01 << (7 - i % 8)) ? 0xff : 0x00; |
617 | info->fix.visual = FB_VISUAL_DIRECTCOLOR; | |
b8c21cf6 BP |
618 | info->fix.line_length = PICOLCDFB_WIDTH; |
619 | } | |
620 | ||
365f1fcd | 621 | kfree(tmp_fb); |
b8c21cf6 | 622 | data->fb_bpp = info->var.bits_per_pixel; |
b8c21cf6 BP |
623 | return 0; |
624 | } | |
625 | ||
225b4590 BP |
626 | /* Do refcounting on our FB and cleanup per worker if FB is |
627 | * closed after unplug of our device | |
628 | * (fb_release holds info->lock and still touches info after | |
629 | * we return so we can't release it immediately. | |
630 | */ | |
631 | struct picolcd_fb_cleanup_item { | |
632 | struct fb_info *info; | |
633 | struct picolcd_fb_cleanup_item *next; | |
634 | }; | |
635 | static struct picolcd_fb_cleanup_item *fb_pending; | |
f2c4826c | 636 | static DEFINE_SPINLOCK(fb_pending_lock); |
225b4590 BP |
637 | |
638 | static void picolcd_fb_do_cleanup(struct work_struct *data) | |
639 | { | |
640 | struct picolcd_fb_cleanup_item *item; | |
641 | unsigned long flags; | |
642 | ||
643 | do { | |
644 | spin_lock_irqsave(&fb_pending_lock, flags); | |
645 | item = fb_pending; | |
646 | fb_pending = item ? item->next : NULL; | |
647 | spin_unlock_irqrestore(&fb_pending_lock, flags); | |
648 | ||
649 | if (item) { | |
650 | u8 *fb = (u8 *)item->info->fix.smem_start; | |
651 | /* make sure we do not race against fb core when | |
652 | * releasing */ | |
653 | mutex_lock(&item->info->lock); | |
654 | mutex_unlock(&item->info->lock); | |
655 | framebuffer_release(item->info); | |
656 | vfree(fb); | |
657 | } | |
658 | } while (item); | |
659 | } | |
660 | ||
f2c4826c | 661 | static DECLARE_WORK(picolcd_fb_cleanup, picolcd_fb_do_cleanup); |
225b4590 BP |
662 | |
663 | static int picolcd_fb_open(struct fb_info *info, int u) | |
664 | { | |
665 | u32 *ref_cnt = info->pseudo_palette; | |
666 | ref_cnt--; | |
667 | ||
668 | (*ref_cnt)++; | |
669 | return 0; | |
670 | } | |
671 | ||
672 | static int picolcd_fb_release(struct fb_info *info, int u) | |
673 | { | |
674 | u32 *ref_cnt = info->pseudo_palette; | |
675 | ref_cnt--; | |
676 | ||
677 | (*ref_cnt)++; | |
678 | if (!*ref_cnt) { | |
679 | unsigned long flags; | |
680 | struct picolcd_fb_cleanup_item *item = (struct picolcd_fb_cleanup_item *)ref_cnt; | |
681 | item--; | |
682 | spin_lock_irqsave(&fb_pending_lock, flags); | |
683 | item->next = fb_pending; | |
684 | fb_pending = item; | |
685 | spin_unlock_irqrestore(&fb_pending_lock, flags); | |
686 | schedule_work(&picolcd_fb_cleanup); | |
687 | } | |
688 | return 0; | |
689 | } | |
690 | ||
b8c21cf6 BP |
691 | /* Note this can't be const because of struct fb_info definition */ |
692 | static struct fb_ops picolcdfb_ops = { | |
693 | .owner = THIS_MODULE, | |
694 | .fb_destroy = picolcd_fb_destroy, | |
225b4590 BP |
695 | .fb_open = picolcd_fb_open, |
696 | .fb_release = picolcd_fb_release, | |
b8c21cf6 BP |
697 | .fb_read = fb_sys_read, |
698 | .fb_write = picolcd_fb_write, | |
699 | .fb_blank = picolcd_fb_blank, | |
700 | .fb_fillrect = picolcd_fb_fillrect, | |
701 | .fb_copyarea = picolcd_fb_copyarea, | |
702 | .fb_imageblit = picolcd_fb_imageblit, | |
703 | .fb_check_var = picolcd_fb_check_var, | |
704 | .fb_set_par = picolcd_set_par, | |
705 | }; | |
706 | ||
707 | ||
708 | /* Callback from deferred IO workqueue */ | |
709 | static void picolcd_fb_deferred_io(struct fb_info *info, struct list_head *pagelist) | |
710 | { | |
711 | picolcd_fb_update(info->par); | |
712 | } | |
713 | ||
714 | static const struct fb_deferred_io picolcd_fb_defio = { | |
715 | .delay = HZ / PICOLCDFB_UPDATE_RATE_DEFAULT, | |
716 | .deferred_io = picolcd_fb_deferred_io, | |
717 | }; | |
718 | ||
719 | ||
720 | /* | |
721 | * The "fb_update_rate" sysfs attribute | |
722 | */ | |
723 | static ssize_t picolcd_fb_update_rate_show(struct device *dev, | |
724 | struct device_attribute *attr, char *buf) | |
725 | { | |
726 | struct picolcd_data *data = dev_get_drvdata(dev); | |
727 | unsigned i, fb_update_rate = data->fb_update_rate; | |
728 | size_t ret = 0; | |
729 | ||
730 | for (i = 1; i <= PICOLCDFB_UPDATE_RATE_LIMIT; i++) | |
731 | if (ret >= PAGE_SIZE) | |
732 | break; | |
733 | else if (i == fb_update_rate) | |
734 | ret += snprintf(buf+ret, PAGE_SIZE-ret, "[%u] ", i); | |
735 | else | |
736 | ret += snprintf(buf+ret, PAGE_SIZE-ret, "%u ", i); | |
737 | if (ret > 0) | |
738 | buf[min(ret, (size_t)PAGE_SIZE)-1] = '\n'; | |
739 | return ret; | |
740 | } | |
741 | ||
742 | static ssize_t picolcd_fb_update_rate_store(struct device *dev, | |
743 | struct device_attribute *attr, const char *buf, size_t count) | |
744 | { | |
745 | struct picolcd_data *data = dev_get_drvdata(dev); | |
746 | int i; | |
747 | unsigned u; | |
748 | ||
749 | if (count < 1 || count > 10) | |
750 | return -EINVAL; | |
751 | ||
752 | i = sscanf(buf, "%u", &u); | |
753 | if (i != 1) | |
754 | return -EINVAL; | |
755 | ||
756 | if (u > PICOLCDFB_UPDATE_RATE_LIMIT) | |
757 | return -ERANGE; | |
758 | else if (u == 0) | |
759 | u = PICOLCDFB_UPDATE_RATE_DEFAULT; | |
760 | ||
761 | data->fb_update_rate = u; | |
762 | data->fb_defio.delay = HZ / data->fb_update_rate; | |
763 | return count; | |
764 | } | |
765 | ||
766 | static DEVICE_ATTR(fb_update_rate, 0666, picolcd_fb_update_rate_show, | |
767 | picolcd_fb_update_rate_store); | |
768 | ||
769 | /* initialize Framebuffer device */ | |
770 | static int picolcd_init_framebuffer(struct picolcd_data *data) | |
771 | { | |
772 | struct device *dev = &data->hdev->dev; | |
773 | struct fb_info *info = NULL; | |
b70884ff | 774 | int i, error = -ENOMEM; |
b8c21cf6 BP |
775 | u8 *fb_vbitmap = NULL; |
776 | u8 *fb_bitmap = NULL; | |
b70884ff | 777 | u32 *palette; |
b8c21cf6 | 778 | |
365f1fcd | 779 | fb_bitmap = vmalloc(PICOLCDFB_SIZE*8); |
b8c21cf6 BP |
780 | if (fb_bitmap == NULL) { |
781 | dev_err(dev, "can't get a free page for framebuffer\n"); | |
782 | goto err_nomem; | |
783 | } | |
784 | ||
785 | fb_vbitmap = kmalloc(PICOLCDFB_SIZE, GFP_KERNEL); | |
786 | if (fb_vbitmap == NULL) { | |
787 | dev_err(dev, "can't alloc vbitmap image buffer\n"); | |
788 | goto err_nomem; | |
789 | } | |
790 | ||
791 | data->fb_update_rate = PICOLCDFB_UPDATE_RATE_DEFAULT; | |
792 | data->fb_defio = picolcd_fb_defio; | |
b70884ff BP |
793 | /* The extra memory is: |
794 | * - struct picolcd_fb_cleanup_item | |
795 | * - u32 for ref_count | |
796 | * - 256*u32 for pseudo_palette | |
797 | */ | |
225b4590 | 798 | info = framebuffer_alloc(257 * sizeof(u32) + sizeof(struct picolcd_fb_cleanup_item), dev); |
b8c21cf6 BP |
799 | if (info == NULL) { |
800 | dev_err(dev, "failed to allocate a framebuffer\n"); | |
801 | goto err_nomem; | |
802 | } | |
803 | ||
225b4590 | 804 | palette = info->par + sizeof(struct picolcd_fb_cleanup_item); |
b70884ff BP |
805 | *palette = 1; |
806 | palette++; | |
807 | for (i = 0; i < 256; i++) | |
808 | palette[i] = i > 0 && i < 16 ? 0xff : 0; | |
809 | info->pseudo_palette = palette; | |
b8c21cf6 BP |
810 | info->fbdefio = &data->fb_defio; |
811 | info->screen_base = (char __force __iomem *)fb_bitmap; | |
812 | info->fbops = &picolcdfb_ops; | |
813 | info->var = picolcdfb_var; | |
814 | info->fix = picolcdfb_fix; | |
365f1fcd | 815 | info->fix.smem_len = PICOLCDFB_SIZE*8; |
b8c21cf6 BP |
816 | info->fix.smem_start = (unsigned long)fb_bitmap; |
817 | info->par = data; | |
818 | info->flags = FBINFO_FLAG_DEFAULT; | |
819 | ||
820 | data->fb_vbitmap = fb_vbitmap; | |
821 | data->fb_bitmap = fb_bitmap; | |
822 | data->fb_bpp = picolcdfb_var.bits_per_pixel; | |
823 | error = picolcd_fb_reset(data, 1); | |
824 | if (error) { | |
825 | dev_err(dev, "failed to configure display\n"); | |
826 | goto err_cleanup; | |
827 | } | |
828 | error = device_create_file(dev, &dev_attr_fb_update_rate); | |
829 | if (error) { | |
830 | dev_err(dev, "failed to create sysfs attributes\n"); | |
831 | goto err_cleanup; | |
832 | } | |
a7c9a0aa | 833 | fb_deferred_io_init(info); |
b8c21cf6 BP |
834 | data->fb_info = info; |
835 | error = register_framebuffer(info); | |
836 | if (error) { | |
837 | dev_err(dev, "failed to register framebuffer\n"); | |
838 | goto err_sysfs; | |
839 | } | |
b8c21cf6 | 840 | /* schedule first output of framebuffer */ |
b70884ff | 841 | data->fb_force = 1; |
b8c21cf6 BP |
842 | schedule_delayed_work(&info->deferred_work, 0); |
843 | return 0; | |
844 | ||
845 | err_sysfs: | |
a7c9a0aa | 846 | fb_deferred_io_cleanup(info); |
b8c21cf6 BP |
847 | device_remove_file(dev, &dev_attr_fb_update_rate); |
848 | err_cleanup: | |
849 | data->fb_vbitmap = NULL; | |
850 | data->fb_bitmap = NULL; | |
851 | data->fb_bpp = 0; | |
852 | data->fb_info = NULL; | |
853 | ||
854 | err_nomem: | |
855 | framebuffer_release(info); | |
856 | vfree(fb_bitmap); | |
857 | kfree(fb_vbitmap); | |
858 | return error; | |
859 | } | |
860 | ||
861 | static void picolcd_exit_framebuffer(struct picolcd_data *data) | |
862 | { | |
863 | struct fb_info *info = data->fb_info; | |
864 | u8 *fb_vbitmap = data->fb_vbitmap; | |
b8c21cf6 BP |
865 | |
866 | if (!info) | |
867 | return; | |
868 | ||
225b4590 BP |
869 | info->par = NULL; |
870 | device_remove_file(&data->hdev->dev, &dev_attr_fb_update_rate); | |
871 | unregister_framebuffer(info); | |
b8c21cf6 BP |
872 | data->fb_vbitmap = NULL; |
873 | data->fb_bitmap = NULL; | |
874 | data->fb_bpp = 0; | |
875 | data->fb_info = NULL; | |
b8c21cf6 BP |
876 | kfree(fb_vbitmap); |
877 | } | |
878 | ||
f1c21761 | 879 | #define picolcd_fbinfo(d) ((d)->fb_info) |
b8c21cf6 BP |
880 | #else |
881 | static inline int picolcd_fb_reset(struct picolcd_data *data, int clear) | |
882 | { | |
883 | return 0; | |
884 | } | |
885 | static inline int picolcd_init_framebuffer(struct picolcd_data *data) | |
886 | { | |
887 | return 0; | |
888 | } | |
9d71ea05 | 889 | static inline void picolcd_exit_framebuffer(struct picolcd_data *data) |
b8c21cf6 BP |
890 | { |
891 | } | |
f1c21761 | 892 | #define picolcd_fbinfo(d) NULL |
5435f281 | 893 | #endif /* CONFIG_HID_PICOLCD_FB */ |
b8c21cf6 | 894 | |
5435f281 | 895 | #ifdef CONFIG_HID_PICOLCD_BACKLIGHT |
f1c21761 BP |
896 | /* |
897 | * backlight class device | |
898 | */ | |
899 | static int picolcd_get_brightness(struct backlight_device *bdev) | |
900 | { | |
901 | struct picolcd_data *data = bl_get_data(bdev); | |
902 | return data->lcd_brightness; | |
903 | } | |
904 | ||
905 | static int picolcd_set_brightness(struct backlight_device *bdev) | |
906 | { | |
907 | struct picolcd_data *data = bl_get_data(bdev); | |
908 | struct hid_report *report = picolcd_out_report(REPORT_BRIGHTNESS, data->hdev); | |
909 | unsigned long flags; | |
910 | ||
911 | if (!report || report->maxfield != 1 || report->field[0]->report_count != 1) | |
912 | return -ENODEV; | |
913 | ||
914 | data->lcd_brightness = bdev->props.brightness & 0x0ff; | |
915 | data->lcd_power = bdev->props.power; | |
916 | spin_lock_irqsave(&data->lock, flags); | |
917 | hid_set_field(report->field[0], 0, data->lcd_power == FB_BLANK_UNBLANK ? data->lcd_brightness : 0); | |
918 | usbhid_submit_report(data->hdev, report, USB_DIR_OUT); | |
919 | spin_unlock_irqrestore(&data->lock, flags); | |
920 | return 0; | |
921 | } | |
922 | ||
923 | static int picolcd_check_bl_fb(struct backlight_device *bdev, struct fb_info *fb) | |
924 | { | |
925 | return fb && fb == picolcd_fbinfo((struct picolcd_data *)bl_get_data(bdev)); | |
926 | } | |
927 | ||
928 | static const struct backlight_ops picolcd_blops = { | |
929 | .update_status = picolcd_set_brightness, | |
930 | .get_brightness = picolcd_get_brightness, | |
931 | .check_fb = picolcd_check_bl_fb, | |
932 | }; | |
933 | ||
934 | static int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *report) | |
935 | { | |
936 | struct device *dev = &data->hdev->dev; | |
937 | struct backlight_device *bdev; | |
938 | struct backlight_properties props; | |
939 | if (!report) | |
940 | return -ENODEV; | |
941 | if (report->maxfield != 1 || report->field[0]->report_count != 1 || | |
942 | report->field[0]->report_size != 8) { | |
943 | dev_err(dev, "unsupported BRIGHTNESS report"); | |
944 | return -EINVAL; | |
945 | } | |
946 | ||
947 | memset(&props, 0, sizeof(props)); | |
bb7ca747 | 948 | props.type = BACKLIGHT_RAW; |
f1c21761 BP |
949 | props.max_brightness = 0xff; |
950 | bdev = backlight_device_register(dev_name(dev), dev, data, | |
951 | &picolcd_blops, &props); | |
952 | if (IS_ERR(bdev)) { | |
953 | dev_err(dev, "failed to register backlight\n"); | |
954 | return PTR_ERR(bdev); | |
955 | } | |
956 | bdev->props.brightness = 0xff; | |
957 | data->lcd_brightness = 0xff; | |
958 | data->backlight = bdev; | |
959 | picolcd_set_brightness(bdev); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | static void picolcd_exit_backlight(struct picolcd_data *data) | |
964 | { | |
965 | struct backlight_device *bdev = data->backlight; | |
966 | ||
967 | data->backlight = NULL; | |
968 | if (bdev) | |
969 | backlight_device_unregister(bdev); | |
970 | } | |
971 | ||
972 | static inline int picolcd_resume_backlight(struct picolcd_data *data) | |
973 | { | |
974 | if (!data->backlight) | |
975 | return 0; | |
976 | return picolcd_set_brightness(data->backlight); | |
977 | } | |
978 | ||
9d71ea05 BP |
979 | #ifdef CONFIG_PM |
980 | static void picolcd_suspend_backlight(struct picolcd_data *data) | |
981 | { | |
982 | int bl_power = data->lcd_power; | |
983 | if (!data->backlight) | |
984 | return; | |
985 | ||
986 | data->backlight->props.power = FB_BLANK_POWERDOWN; | |
987 | picolcd_set_brightness(data->backlight); | |
988 | data->lcd_power = data->backlight->props.power = bl_power; | |
989 | } | |
990 | #endif /* CONFIG_PM */ | |
f1c21761 BP |
991 | #else |
992 | static inline int picolcd_init_backlight(struct picolcd_data *data, | |
993 | struct hid_report *report) | |
994 | { | |
995 | return 0; | |
996 | } | |
997 | static inline void picolcd_exit_backlight(struct picolcd_data *data) | |
998 | { | |
999 | } | |
1000 | static inline int picolcd_resume_backlight(struct picolcd_data *data) | |
1001 | { | |
1002 | return 0; | |
1003 | } | |
9d71ea05 BP |
1004 | static inline void picolcd_suspend_backlight(struct picolcd_data *data) |
1005 | { | |
1006 | } | |
5435f281 | 1007 | #endif /* CONFIG_HID_PICOLCD_BACKLIGHT */ |
f1c21761 | 1008 | |
5435f281 | 1009 | #ifdef CONFIG_HID_PICOLCD_LCD |
e8d931bb BP |
1010 | /* |
1011 | * lcd class device | |
1012 | */ | |
1013 | static int picolcd_get_contrast(struct lcd_device *ldev) | |
1014 | { | |
1015 | struct picolcd_data *data = lcd_get_data(ldev); | |
1016 | return data->lcd_contrast; | |
1017 | } | |
1018 | ||
1019 | static int picolcd_set_contrast(struct lcd_device *ldev, int contrast) | |
1020 | { | |
1021 | struct picolcd_data *data = lcd_get_data(ldev); | |
1022 | struct hid_report *report = picolcd_out_report(REPORT_CONTRAST, data->hdev); | |
1023 | unsigned long flags; | |
1024 | ||
1025 | if (!report || report->maxfield != 1 || report->field[0]->report_count != 1) | |
1026 | return -ENODEV; | |
1027 | ||
1028 | data->lcd_contrast = contrast & 0x0ff; | |
1029 | spin_lock_irqsave(&data->lock, flags); | |
1030 | hid_set_field(report->field[0], 0, data->lcd_contrast); | |
1031 | usbhid_submit_report(data->hdev, report, USB_DIR_OUT); | |
1032 | spin_unlock_irqrestore(&data->lock, flags); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | static int picolcd_check_lcd_fb(struct lcd_device *ldev, struct fb_info *fb) | |
1037 | { | |
1038 | return fb && fb == picolcd_fbinfo((struct picolcd_data *)lcd_get_data(ldev)); | |
1039 | } | |
1040 | ||
1041 | static struct lcd_ops picolcd_lcdops = { | |
1042 | .get_contrast = picolcd_get_contrast, | |
1043 | .set_contrast = picolcd_set_contrast, | |
1044 | .check_fb = picolcd_check_lcd_fb, | |
1045 | }; | |
1046 | ||
1047 | static int picolcd_init_lcd(struct picolcd_data *data, struct hid_report *report) | |
1048 | { | |
1049 | struct device *dev = &data->hdev->dev; | |
1050 | struct lcd_device *ldev; | |
1051 | ||
1052 | if (!report) | |
1053 | return -ENODEV; | |
1054 | if (report->maxfield != 1 || report->field[0]->report_count != 1 || | |
1055 | report->field[0]->report_size != 8) { | |
1056 | dev_err(dev, "unsupported CONTRAST report"); | |
1057 | return -EINVAL; | |
1058 | } | |
1059 | ||
1060 | ldev = lcd_device_register(dev_name(dev), dev, data, &picolcd_lcdops); | |
1061 | if (IS_ERR(ldev)) { | |
1062 | dev_err(dev, "failed to register LCD\n"); | |
1063 | return PTR_ERR(ldev); | |
1064 | } | |
1065 | ldev->props.max_contrast = 0x0ff; | |
1066 | data->lcd_contrast = 0xe5; | |
1067 | data->lcd = ldev; | |
1068 | picolcd_set_contrast(ldev, 0xe5); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | static void picolcd_exit_lcd(struct picolcd_data *data) | |
1073 | { | |
1074 | struct lcd_device *ldev = data->lcd; | |
1075 | ||
1076 | data->lcd = NULL; | |
1077 | if (ldev) | |
1078 | lcd_device_unregister(ldev); | |
1079 | } | |
1080 | ||
1081 | static inline int picolcd_resume_lcd(struct picolcd_data *data) | |
1082 | { | |
1083 | if (!data->lcd) | |
1084 | return 0; | |
1085 | return picolcd_set_contrast(data->lcd, data->lcd_contrast); | |
1086 | } | |
1087 | #else | |
1088 | static inline int picolcd_init_lcd(struct picolcd_data *data, | |
1089 | struct hid_report *report) | |
1090 | { | |
1091 | return 0; | |
1092 | } | |
1093 | static inline void picolcd_exit_lcd(struct picolcd_data *data) | |
1094 | { | |
1095 | } | |
1096 | static inline int picolcd_resume_lcd(struct picolcd_data *data) | |
1097 | { | |
1098 | return 0; | |
1099 | } | |
5435f281 | 1100 | #endif /* CONFIG_HID_PICOLCD_LCD */ |
e8d931bb | 1101 | |
5435f281 | 1102 | #ifdef CONFIG_HID_PICOLCD_LEDS |
467d6523 BP |
1103 | /** |
1104 | * LED class device | |
1105 | */ | |
1106 | static void picolcd_leds_set(struct picolcd_data *data) | |
1107 | { | |
1108 | struct hid_report *report; | |
1109 | unsigned long flags; | |
1110 | ||
1111 | if (!data->led[0]) | |
1112 | return; | |
1113 | report = picolcd_out_report(REPORT_LED_STATE, data->hdev); | |
1114 | if (!report || report->maxfield != 1 || report->field[0]->report_count != 1) | |
1115 | return; | |
1116 | ||
1117 | spin_lock_irqsave(&data->lock, flags); | |
1118 | hid_set_field(report->field[0], 0, data->led_state); | |
1119 | usbhid_submit_report(data->hdev, report, USB_DIR_OUT); | |
1120 | spin_unlock_irqrestore(&data->lock, flags); | |
1121 | } | |
1122 | ||
1123 | static void picolcd_led_set_brightness(struct led_classdev *led_cdev, | |
1124 | enum led_brightness value) | |
1125 | { | |
1126 | struct device *dev; | |
1127 | struct hid_device *hdev; | |
1128 | struct picolcd_data *data; | |
1129 | int i, state = 0; | |
1130 | ||
1131 | dev = led_cdev->dev->parent; | |
1132 | hdev = container_of(dev, struct hid_device, dev); | |
1133 | data = hid_get_drvdata(hdev); | |
1134 | for (i = 0; i < 8; i++) { | |
1135 | if (led_cdev != data->led[i]) | |
1136 | continue; | |
1137 | state = (data->led_state >> i) & 1; | |
1138 | if (value == LED_OFF && state) { | |
1139 | data->led_state &= ~(1 << i); | |
1140 | picolcd_leds_set(data); | |
1141 | } else if (value != LED_OFF && !state) { | |
1142 | data->led_state |= 1 << i; | |
1143 | picolcd_leds_set(data); | |
1144 | } | |
1145 | break; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | static enum led_brightness picolcd_led_get_brightness(struct led_classdev *led_cdev) | |
1150 | { | |
1151 | struct device *dev; | |
1152 | struct hid_device *hdev; | |
1153 | struct picolcd_data *data; | |
1154 | int i, value = 0; | |
1155 | ||
1156 | dev = led_cdev->dev->parent; | |
1157 | hdev = container_of(dev, struct hid_device, dev); | |
1158 | data = hid_get_drvdata(hdev); | |
1159 | for (i = 0; i < 8; i++) | |
1160 | if (led_cdev == data->led[i]) { | |
1161 | value = (data->led_state >> i) & 1; | |
1162 | break; | |
1163 | } | |
1164 | return value ? LED_FULL : LED_OFF; | |
1165 | } | |
1166 | ||
1167 | static int picolcd_init_leds(struct picolcd_data *data, struct hid_report *report) | |
1168 | { | |
1169 | struct device *dev = &data->hdev->dev; | |
1170 | struct led_classdev *led; | |
1171 | size_t name_sz = strlen(dev_name(dev)) + 8; | |
1172 | char *name; | |
1173 | int i, ret = 0; | |
1174 | ||
1175 | if (!report) | |
1176 | return -ENODEV; | |
1177 | if (report->maxfield != 1 || report->field[0]->report_count != 1 || | |
1178 | report->field[0]->report_size != 8) { | |
1179 | dev_err(dev, "unsupported LED_STATE report"); | |
1180 | return -EINVAL; | |
1181 | } | |
1182 | ||
1183 | for (i = 0; i < 8; i++) { | |
1184 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
1185 | if (!led) { | |
1186 | dev_err(dev, "can't allocate memory for LED %d\n", i); | |
1187 | ret = -ENOMEM; | |
1188 | goto err; | |
1189 | } | |
1190 | name = (void *)(&led[1]); | |
1191 | snprintf(name, name_sz, "%s::GPO%d", dev_name(dev), i); | |
1192 | led->name = name; | |
1193 | led->brightness = 0; | |
1194 | led->max_brightness = 1; | |
1195 | led->brightness_get = picolcd_led_get_brightness; | |
1196 | led->brightness_set = picolcd_led_set_brightness; | |
1197 | ||
1198 | data->led[i] = led; | |
1199 | ret = led_classdev_register(dev, data->led[i]); | |
1200 | if (ret) { | |
1201 | data->led[i] = NULL; | |
1202 | kfree(led); | |
1203 | dev_err(dev, "can't register LED %d\n", i); | |
1204 | goto err; | |
1205 | } | |
1206 | } | |
1207 | return 0; | |
1208 | err: | |
1209 | for (i = 0; i < 8; i++) | |
1210 | if (data->led[i]) { | |
1211 | led = data->led[i]; | |
1212 | data->led[i] = NULL; | |
1213 | led_classdev_unregister(led); | |
1214 | kfree(led); | |
1215 | } | |
1216 | return ret; | |
1217 | } | |
1218 | ||
1219 | static void picolcd_exit_leds(struct picolcd_data *data) | |
1220 | { | |
1221 | struct led_classdev *led; | |
1222 | int i; | |
1223 | ||
1224 | for (i = 0; i < 8; i++) { | |
1225 | led = data->led[i]; | |
1226 | data->led[i] = NULL; | |
1227 | if (!led) | |
1228 | continue; | |
1229 | led_classdev_unregister(led); | |
1230 | kfree(led); | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | #else | |
1235 | static inline int picolcd_init_leds(struct picolcd_data *data, | |
1236 | struct hid_report *report) | |
1237 | { | |
1238 | return 0; | |
1239 | } | |
9d71ea05 | 1240 | static inline void picolcd_exit_leds(struct picolcd_data *data) |
467d6523 BP |
1241 | { |
1242 | } | |
1243 | static inline int picolcd_leds_set(struct picolcd_data *data) | |
1244 | { | |
1245 | return 0; | |
1246 | } | |
5435f281 | 1247 | #endif /* CONFIG_HID_PICOLCD_LEDS */ |
467d6523 | 1248 | |
236db47c BP |
1249 | /* |
1250 | * input class device | |
1251 | */ | |
1252 | static int picolcd_raw_keypad(struct picolcd_data *data, | |
1253 | struct hid_report *report, u8 *raw_data, int size) | |
1254 | { | |
1255 | /* | |
1256 | * Keypad event | |
1257 | * First and second data bytes list currently pressed keys, | |
1258 | * 0x00 means no key and at most 2 keys may be pressed at same time | |
1259 | */ | |
1260 | int i, j; | |
1261 | ||
1262 | /* determine newly pressed keys */ | |
1263 | for (i = 0; i < size; i++) { | |
1264 | unsigned int key_code; | |
1265 | if (raw_data[i] == 0) | |
1266 | continue; | |
1267 | for (j = 0; j < sizeof(data->pressed_keys); j++) | |
1268 | if (data->pressed_keys[j] == raw_data[i]) | |
1269 | goto key_already_down; | |
1270 | for (j = 0; j < sizeof(data->pressed_keys); j++) | |
1271 | if (data->pressed_keys[j] == 0) { | |
1272 | data->pressed_keys[j] = raw_data[i]; | |
1273 | break; | |
1274 | } | |
1275 | input_event(data->input_keys, EV_MSC, MSC_SCAN, raw_data[i]); | |
1276 | if (raw_data[i] < PICOLCD_KEYS) | |
1277 | key_code = data->keycode[raw_data[i]]; | |
1278 | else | |
1279 | key_code = KEY_UNKNOWN; | |
1280 | if (key_code != KEY_UNKNOWN) { | |
1281 | dbg_hid(PICOLCD_NAME " got key press for %u:%d", | |
1282 | raw_data[i], key_code); | |
1283 | input_report_key(data->input_keys, key_code, 1); | |
1284 | } | |
1285 | input_sync(data->input_keys); | |
1286 | key_already_down: | |
1287 | continue; | |
1288 | } | |
1289 | ||
1290 | /* determine newly released keys */ | |
1291 | for (j = 0; j < sizeof(data->pressed_keys); j++) { | |
1292 | unsigned int key_code; | |
1293 | if (data->pressed_keys[j] == 0) | |
1294 | continue; | |
1295 | for (i = 0; i < size; i++) | |
1296 | if (data->pressed_keys[j] == raw_data[i]) | |
1297 | goto key_still_down; | |
1298 | input_event(data->input_keys, EV_MSC, MSC_SCAN, data->pressed_keys[j]); | |
1299 | if (data->pressed_keys[j] < PICOLCD_KEYS) | |
1300 | key_code = data->keycode[data->pressed_keys[j]]; | |
1301 | else | |
1302 | key_code = KEY_UNKNOWN; | |
1303 | if (key_code != KEY_UNKNOWN) { | |
1304 | dbg_hid(PICOLCD_NAME " got key release for %u:%d", | |
1305 | data->pressed_keys[j], key_code); | |
1306 | input_report_key(data->input_keys, key_code, 0); | |
1307 | } | |
1308 | input_sync(data->input_keys); | |
1309 | data->pressed_keys[j] = 0; | |
1310 | key_still_down: | |
1311 | continue; | |
1312 | } | |
1313 | return 1; | |
1314 | } | |
1315 | ||
1316 | static int picolcd_raw_cir(struct picolcd_data *data, | |
1317 | struct hid_report *report, u8 *raw_data, int size) | |
1318 | { | |
1319 | /* Need understanding of CIR data format to implement ... */ | |
1320 | return 1; | |
1321 | } | |
1322 | ||
1323 | static int picolcd_check_version(struct hid_device *hdev) | |
1324 | { | |
1325 | struct picolcd_data *data = hid_get_drvdata(hdev); | |
1326 | struct picolcd_pending *verinfo; | |
1327 | int ret = 0; | |
1328 | ||
1329 | if (!data) | |
1330 | return -ENODEV; | |
1331 | ||
1332 | verinfo = picolcd_send_and_wait(hdev, REPORT_VERSION, NULL, 0); | |
1333 | if (!verinfo) { | |
4291ee30 | 1334 | hid_err(hdev, "no version response from PicoLCD\n"); |
236db47c BP |
1335 | return -ENODEV; |
1336 | } | |
1337 | ||
1338 | if (verinfo->raw_size == 2) { | |
76d17e6c BP |
1339 | data->version[0] = verinfo->raw_data[1]; |
1340 | data->version[1] = verinfo->raw_data[0]; | |
236db47c | 1341 | if (data->status & PICOLCD_BOOTLOADER) { |
4291ee30 JP |
1342 | hid_info(hdev, "PicoLCD, bootloader version %d.%d\n", |
1343 | verinfo->raw_data[1], verinfo->raw_data[0]); | |
236db47c | 1344 | } else { |
4291ee30 JP |
1345 | hid_info(hdev, "PicoLCD, firmware version %d.%d\n", |
1346 | verinfo->raw_data[1], verinfo->raw_data[0]); | |
236db47c BP |
1347 | } |
1348 | } else { | |
4291ee30 | 1349 | hid_err(hdev, "confused, got unexpected version response from PicoLCD\n"); |
236db47c BP |
1350 | ret = -EINVAL; |
1351 | } | |
1352 | kfree(verinfo); | |
1353 | return ret; | |
1354 | } | |
1355 | ||
1356 | /* | |
1357 | * Reset our device and wait for answer to VERSION request | |
1358 | */ | |
1359 | static int picolcd_reset(struct hid_device *hdev) | |
1360 | { | |
1361 | struct picolcd_data *data = hid_get_drvdata(hdev); | |
1362 | struct hid_report *report = picolcd_out_report(REPORT_RESET, hdev); | |
1363 | unsigned long flags; | |
b8c21cf6 | 1364 | int error; |
236db47c BP |
1365 | |
1366 | if (!data || !report || report->maxfield != 1) | |
1367 | return -ENODEV; | |
1368 | ||
1369 | spin_lock_irqsave(&data->lock, flags); | |
1370 | if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER) | |
1371 | data->status |= PICOLCD_BOOTLOADER; | |
1372 | ||
1373 | /* perform the reset */ | |
1374 | hid_set_field(report->field[0], 0, 1); | |
1375 | usbhid_submit_report(hdev, report, USB_DIR_OUT); | |
1376 | spin_unlock_irqrestore(&data->lock, flags); | |
1377 | ||
b8c21cf6 BP |
1378 | error = picolcd_check_version(hdev); |
1379 | if (error) | |
1380 | return error; | |
1381 | ||
e8d931bb | 1382 | picolcd_resume_lcd(data); |
f1c21761 | 1383 | picolcd_resume_backlight(data); |
5435f281 | 1384 | #ifdef CONFIG_HID_PICOLCD_FB |
b8c21cf6 BP |
1385 | if (data->fb_info) |
1386 | schedule_delayed_work(&data->fb_info->deferred_work, 0); | |
5435f281 | 1387 | #endif /* CONFIG_HID_PICOLCD_FB */ |
b8c21cf6 | 1388 | |
467d6523 | 1389 | picolcd_leds_set(data); |
b8c21cf6 | 1390 | return 0; |
236db47c BP |
1391 | } |
1392 | ||
1393 | /* | |
1394 | * The "operation_mode" sysfs attribute | |
1395 | */ | |
1396 | static ssize_t picolcd_operation_mode_show(struct device *dev, | |
1397 | struct device_attribute *attr, char *buf) | |
1398 | { | |
1399 | struct picolcd_data *data = dev_get_drvdata(dev); | |
1400 | ||
1401 | if (data->status & PICOLCD_BOOTLOADER) | |
1402 | return snprintf(buf, PAGE_SIZE, "[bootloader] lcd\n"); | |
1403 | else | |
1404 | return snprintf(buf, PAGE_SIZE, "bootloader [lcd]\n"); | |
1405 | } | |
1406 | ||
1407 | static ssize_t picolcd_operation_mode_store(struct device *dev, | |
1408 | struct device_attribute *attr, const char *buf, size_t count) | |
1409 | { | |
1410 | struct picolcd_data *data = dev_get_drvdata(dev); | |
1411 | struct hid_report *report = NULL; | |
1412 | size_t cnt = count; | |
0b5adf92 | 1413 | int timeout = data->opmode_delay; |
236db47c BP |
1414 | unsigned long flags; |
1415 | ||
1416 | if (cnt >= 3 && strncmp("lcd", buf, 3) == 0) { | |
1417 | if (data->status & PICOLCD_BOOTLOADER) | |
1418 | report = picolcd_out_report(REPORT_EXIT_FLASHER, data->hdev); | |
1419 | buf += 3; | |
1420 | cnt -= 3; | |
1421 | } else if (cnt >= 10 && strncmp("bootloader", buf, 10) == 0) { | |
1422 | if (!(data->status & PICOLCD_BOOTLOADER)) | |
1423 | report = picolcd_out_report(REPORT_EXIT_KEYBOARD, data->hdev); | |
1424 | buf += 10; | |
1425 | cnt -= 10; | |
1426 | } | |
1427 | if (!report) | |
1428 | return -EINVAL; | |
1429 | ||
236db47c BP |
1430 | while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r')) |
1431 | cnt--; | |
0b5adf92 BP |
1432 | if (cnt != 0) |
1433 | return -EINVAL; | |
236db47c BP |
1434 | |
1435 | spin_lock_irqsave(&data->lock, flags); | |
1436 | hid_set_field(report->field[0], 0, timeout & 0xff); | |
1437 | hid_set_field(report->field[0], 1, (timeout >> 8) & 0xff); | |
1438 | usbhid_submit_report(data->hdev, report, USB_DIR_OUT); | |
1439 | spin_unlock_irqrestore(&data->lock, flags); | |
1440 | return count; | |
1441 | } | |
1442 | ||
1443 | static DEVICE_ATTR(operation_mode, 0644, picolcd_operation_mode_show, | |
1444 | picolcd_operation_mode_store); | |
1445 | ||
0b5adf92 BP |
1446 | /* |
1447 | * The "operation_mode_delay" sysfs attribute | |
1448 | */ | |
1449 | static ssize_t picolcd_operation_mode_delay_show(struct device *dev, | |
1450 | struct device_attribute *attr, char *buf) | |
1451 | { | |
1452 | struct picolcd_data *data = dev_get_drvdata(dev); | |
1453 | ||
1454 | return snprintf(buf, PAGE_SIZE, "%hu\n", data->opmode_delay); | |
1455 | } | |
1456 | ||
1457 | static ssize_t picolcd_operation_mode_delay_store(struct device *dev, | |
1458 | struct device_attribute *attr, const char *buf, size_t count) | |
1459 | { | |
1460 | struct picolcd_data *data = dev_get_drvdata(dev); | |
1461 | unsigned u; | |
1462 | if (sscanf(buf, "%u", &u) != 1) | |
1463 | return -EINVAL; | |
1464 | if (u > 30000) | |
1465 | return -EINVAL; | |
1466 | else | |
1467 | data->opmode_delay = u; | |
1468 | return count; | |
1469 | } | |
1470 | ||
1471 | static DEVICE_ATTR(operation_mode_delay, 0644, picolcd_operation_mode_delay_show, | |
1472 | picolcd_operation_mode_delay_store); | |
1473 | ||
236db47c BP |
1474 | |
1475 | #ifdef CONFIG_DEBUG_FS | |
9bbf2b98 BP |
1476 | /* |
1477 | * The "reset" file | |
1478 | */ | |
1479 | static int picolcd_debug_reset_show(struct seq_file *f, void *p) | |
1480 | { | |
1481 | if (picolcd_fbinfo((struct picolcd_data *)f->private)) | |
1482 | seq_printf(f, "all fb\n"); | |
1483 | else | |
1484 | seq_printf(f, "all\n"); | |
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | static int picolcd_debug_reset_open(struct inode *inode, struct file *f) | |
1489 | { | |
1490 | return single_open(f, picolcd_debug_reset_show, inode->i_private); | |
1491 | } | |
1492 | ||
1493 | static ssize_t picolcd_debug_reset_write(struct file *f, const char __user *user_buf, | |
1494 | size_t count, loff_t *ppos) | |
1495 | { | |
1496 | struct picolcd_data *data = ((struct seq_file *)f->private_data)->private; | |
1497 | char buf[32]; | |
1498 | size_t cnt = min(count, sizeof(buf)-1); | |
1499 | if (copy_from_user(buf, user_buf, cnt)) | |
1500 | return -EFAULT; | |
1501 | ||
1502 | while (cnt > 0 && (buf[cnt-1] == ' ' || buf[cnt-1] == '\n')) | |
1503 | cnt--; | |
1504 | buf[cnt] = '\0'; | |
1505 | if (strcmp(buf, "all") == 0) { | |
1506 | picolcd_reset(data->hdev); | |
1507 | picolcd_fb_reset(data, 1); | |
1508 | } else if (strcmp(buf, "fb") == 0) { | |
1509 | picolcd_fb_reset(data, 1); | |
1510 | } else { | |
1511 | return -EINVAL; | |
1512 | } | |
1513 | return count; | |
1514 | } | |
1515 | ||
1516 | static const struct file_operations picolcd_debug_reset_fops = { | |
1517 | .owner = THIS_MODULE, | |
1518 | .open = picolcd_debug_reset_open, | |
1519 | .read = seq_read, | |
1520 | .llseek = seq_lseek, | |
1521 | .write = picolcd_debug_reset_write, | |
1522 | .release = single_release, | |
1523 | }; | |
1524 | ||
1525 | /* | |
1526 | * The "eeprom" file | |
1527 | */ | |
9bbf2b98 BP |
1528 | static ssize_t picolcd_debug_eeprom_read(struct file *f, char __user *u, |
1529 | size_t s, loff_t *off) | |
1530 | { | |
1531 | struct picolcd_data *data = f->private_data; | |
1532 | struct picolcd_pending *resp; | |
1533 | u8 raw_data[3]; | |
1534 | ssize_t ret = -EIO; | |
1535 | ||
1536 | if (s == 0) | |
1537 | return -EINVAL; | |
1538 | if (*off > 0x0ff) | |
1539 | return 0; | |
1540 | ||
1541 | /* prepare buffer with info about what we want to read (addr & len) */ | |
1542 | raw_data[0] = *off & 0xff; | |
86280a20 | 1543 | raw_data[1] = (*off >> 8) & 0xff; |
9bbf2b98 BP |
1544 | raw_data[2] = s < 20 ? s : 20; |
1545 | if (*off + raw_data[2] > 0xff) | |
1546 | raw_data[2] = 0x100 - *off; | |
1547 | resp = picolcd_send_and_wait(data->hdev, REPORT_EE_READ, raw_data, | |
1548 | sizeof(raw_data)); | |
1549 | if (!resp) | |
1550 | return -EIO; | |
1551 | ||
1552 | if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) { | |
1553 | /* successful read :) */ | |
1554 | ret = resp->raw_data[2]; | |
1555 | if (ret > s) | |
1556 | ret = s; | |
1557 | if (copy_to_user(u, resp->raw_data+3, ret)) | |
1558 | ret = -EFAULT; | |
1559 | else | |
1560 | *off += ret; | |
1561 | } /* anything else is some kind of IO error */ | |
1562 | ||
1563 | kfree(resp); | |
1564 | return ret; | |
1565 | } | |
1566 | ||
1567 | static ssize_t picolcd_debug_eeprom_write(struct file *f, const char __user *u, | |
1568 | size_t s, loff_t *off) | |
1569 | { | |
1570 | struct picolcd_data *data = f->private_data; | |
1571 | struct picolcd_pending *resp; | |
1572 | ssize_t ret = -EIO; | |
1573 | u8 raw_data[23]; | |
1574 | ||
1575 | if (s == 0) | |
1576 | return -EINVAL; | |
1577 | if (*off > 0x0ff) | |
1578 | return -ENOSPC; | |
1579 | ||
1580 | memset(raw_data, 0, sizeof(raw_data)); | |
1581 | raw_data[0] = *off & 0xff; | |
86280a20 | 1582 | raw_data[1] = (*off >> 8) & 0xff; |
8c4e708d | 1583 | raw_data[2] = min((size_t)20, s); |
9bbf2b98 BP |
1584 | if (*off + raw_data[2] > 0xff) |
1585 | raw_data[2] = 0x100 - *off; | |
1586 | ||
8c4e708d | 1587 | if (copy_from_user(raw_data+3, u, min((u8)20, raw_data[2]))) |
9bbf2b98 BP |
1588 | return -EFAULT; |
1589 | resp = picolcd_send_and_wait(data->hdev, REPORT_EE_WRITE, raw_data, | |
1590 | sizeof(raw_data)); | |
1591 | ||
1592 | if (!resp) | |
1593 | return -EIO; | |
1594 | ||
1595 | if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) { | |
1596 | /* check if written data matches */ | |
1597 | if (memcmp(raw_data, resp->raw_data, 3+raw_data[2]) == 0) { | |
1598 | *off += raw_data[2]; | |
1599 | ret = raw_data[2]; | |
1600 | } | |
1601 | } | |
1602 | kfree(resp); | |
1603 | return ret; | |
1604 | } | |
1605 | ||
1606 | /* | |
1607 | * Notes: | |
1608 | * - read/write happens in chunks of at most 20 bytes, it's up to userspace | |
1609 | * to loop in order to get more data. | |
1610 | * - on write errors on otherwise correct write request the bytes | |
1611 | * that should have been written are in undefined state. | |
1612 | */ | |
1613 | static const struct file_operations picolcd_debug_eeprom_fops = { | |
1614 | .owner = THIS_MODULE, | |
234e3405 | 1615 | .open = simple_open, |
9bbf2b98 BP |
1616 | .read = picolcd_debug_eeprom_read, |
1617 | .write = picolcd_debug_eeprom_write, | |
1618 | .llseek = generic_file_llseek, | |
1619 | }; | |
1620 | ||
1621 | /* | |
1622 | * The "flash" file | |
1623 | */ | |
9bbf2b98 BP |
1624 | /* record a flash address to buf (bounds check to be done by caller) */ |
1625 | static int _picolcd_flash_setaddr(struct picolcd_data *data, u8 *buf, long off) | |
1626 | { | |
1627 | buf[0] = off & 0xff; | |
1628 | buf[1] = (off >> 8) & 0xff; | |
1629 | if (data->addr_sz == 3) | |
1630 | buf[2] = (off >> 16) & 0xff; | |
1631 | return data->addr_sz == 2 ? 2 : 3; | |
1632 | } | |
1633 | ||
1634 | /* read a given size of data (bounds check to be done by caller) */ | |
1635 | static ssize_t _picolcd_flash_read(struct picolcd_data *data, int report_id, | |
1636 | char __user *u, size_t s, loff_t *off) | |
1637 | { | |
1638 | struct picolcd_pending *resp; | |
1639 | u8 raw_data[4]; | |
1640 | ssize_t ret = 0; | |
1641 | int len_off, err = -EIO; | |
1642 | ||
1643 | while (s > 0) { | |
1644 | err = -EIO; | |
1645 | len_off = _picolcd_flash_setaddr(data, raw_data, *off); | |
1646 | raw_data[len_off] = s > 32 ? 32 : s; | |
1647 | resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off+1); | |
1648 | if (!resp || !resp->in_report) | |
1649 | goto skip; | |
1650 | if (resp->in_report->id == REPORT_MEMORY || | |
1651 | resp->in_report->id == REPORT_BL_READ_MEMORY) { | |
1652 | if (memcmp(raw_data, resp->raw_data, len_off+1) != 0) | |
1653 | goto skip; | |
1654 | if (copy_to_user(u+ret, resp->raw_data+len_off+1, raw_data[len_off])) { | |
1655 | err = -EFAULT; | |
1656 | goto skip; | |
1657 | } | |
1658 | *off += raw_data[len_off]; | |
1659 | s -= raw_data[len_off]; | |
1660 | ret += raw_data[len_off]; | |
1661 | err = 0; | |
1662 | } | |
1663 | skip: | |
1664 | kfree(resp); | |
1665 | if (err) | |
1666 | return ret > 0 ? ret : err; | |
1667 | } | |
1668 | return ret; | |
1669 | } | |
1670 | ||
1671 | static ssize_t picolcd_debug_flash_read(struct file *f, char __user *u, | |
1672 | size_t s, loff_t *off) | |
1673 | { | |
1674 | struct picolcd_data *data = f->private_data; | |
1675 | ||
1676 | if (s == 0) | |
1677 | return -EINVAL; | |
1678 | if (*off > 0x05fff) | |
1679 | return 0; | |
1680 | if (*off + s > 0x05fff) | |
1681 | s = 0x06000 - *off; | |
1682 | ||
1683 | if (data->status & PICOLCD_BOOTLOADER) | |
1684 | return _picolcd_flash_read(data, REPORT_BL_READ_MEMORY, u, s, off); | |
1685 | else | |
1686 | return _picolcd_flash_read(data, REPORT_READ_MEMORY, u, s, off); | |
1687 | } | |
1688 | ||
1689 | /* erase block aligned to 64bytes boundary */ | |
1690 | static ssize_t _picolcd_flash_erase64(struct picolcd_data *data, int report_id, | |
1691 | loff_t *off) | |
1692 | { | |
1693 | struct picolcd_pending *resp; | |
1694 | u8 raw_data[3]; | |
1695 | int len_off; | |
1696 | ssize_t ret = -EIO; | |
1697 | ||
1698 | if (*off & 0x3f) | |
1699 | return -EINVAL; | |
1700 | ||
1701 | len_off = _picolcd_flash_setaddr(data, raw_data, *off); | |
1702 | resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off); | |
1703 | if (!resp || !resp->in_report) | |
1704 | goto skip; | |
1705 | if (resp->in_report->id == REPORT_MEMORY || | |
1706 | resp->in_report->id == REPORT_BL_ERASE_MEMORY) { | |
1707 | if (memcmp(raw_data, resp->raw_data, len_off) != 0) | |
1708 | goto skip; | |
1709 | ret = 0; | |
1710 | } | |
1711 | skip: | |
1712 | kfree(resp); | |
1713 | return ret; | |
1714 | } | |
1715 | ||
1716 | /* write a given size of data (bounds check to be done by caller) */ | |
1717 | static ssize_t _picolcd_flash_write(struct picolcd_data *data, int report_id, | |
1718 | const char __user *u, size_t s, loff_t *off) | |
1719 | { | |
1720 | struct picolcd_pending *resp; | |
1721 | u8 raw_data[36]; | |
1722 | ssize_t ret = 0; | |
1723 | int len_off, err = -EIO; | |
1724 | ||
1725 | while (s > 0) { | |
1726 | err = -EIO; | |
1727 | len_off = _picolcd_flash_setaddr(data, raw_data, *off); | |
1728 | raw_data[len_off] = s > 32 ? 32 : s; | |
1729 | if (copy_from_user(raw_data+len_off+1, u, raw_data[len_off])) { | |
1730 | err = -EFAULT; | |
aeacb6fd | 1731 | break; |
9bbf2b98 BP |
1732 | } |
1733 | resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, | |
1734 | len_off+1+raw_data[len_off]); | |
1735 | if (!resp || !resp->in_report) | |
1736 | goto skip; | |
1737 | if (resp->in_report->id == REPORT_MEMORY || | |
1738 | resp->in_report->id == REPORT_BL_WRITE_MEMORY) { | |
1739 | if (memcmp(raw_data, resp->raw_data, len_off+1+raw_data[len_off]) != 0) | |
1740 | goto skip; | |
1741 | *off += raw_data[len_off]; | |
1742 | s -= raw_data[len_off]; | |
1743 | ret += raw_data[len_off]; | |
1744 | err = 0; | |
1745 | } | |
1746 | skip: | |
1747 | kfree(resp); | |
1748 | if (err) | |
1749 | break; | |
1750 | } | |
1751 | return ret > 0 ? ret : err; | |
1752 | } | |
1753 | ||
1754 | static ssize_t picolcd_debug_flash_write(struct file *f, const char __user *u, | |
1755 | size_t s, loff_t *off) | |
1756 | { | |
1757 | struct picolcd_data *data = f->private_data; | |
1758 | ssize_t err, ret = 0; | |
1759 | int report_erase, report_write; | |
1760 | ||
1761 | if (s == 0) | |
1762 | return -EINVAL; | |
1763 | if (*off > 0x5fff) | |
1764 | return -ENOSPC; | |
1765 | if (s & 0x3f) | |
1766 | return -EINVAL; | |
1767 | if (*off & 0x3f) | |
1768 | return -EINVAL; | |
1769 | ||
1770 | if (data->status & PICOLCD_BOOTLOADER) { | |
1771 | report_erase = REPORT_BL_ERASE_MEMORY; | |
1772 | report_write = REPORT_BL_WRITE_MEMORY; | |
1773 | } else { | |
1774 | report_erase = REPORT_ERASE_MEMORY; | |
1775 | report_write = REPORT_WRITE_MEMORY; | |
1776 | } | |
1777 | mutex_lock(&data->mutex_flash); | |
1778 | while (s > 0) { | |
1779 | err = _picolcd_flash_erase64(data, report_erase, off); | |
1780 | if (err) | |
1781 | break; | |
1782 | err = _picolcd_flash_write(data, report_write, u, 64, off); | |
1783 | if (err < 0) | |
1784 | break; | |
1785 | ret += err; | |
1786 | *off += err; | |
1787 | s -= err; | |
1788 | if (err != 64) | |
1789 | break; | |
1790 | } | |
1791 | mutex_unlock(&data->mutex_flash); | |
1792 | return ret > 0 ? ret : err; | |
1793 | } | |
1794 | ||
1795 | /* | |
1796 | * Notes: | |
1797 | * - concurrent writing is prevented by mutex and all writes must be | |
25985edc | 1798 | * n*64 bytes and 64-byte aligned, each write being preceded by an |
9bbf2b98 BP |
1799 | * ERASE which erases a 64byte block. |
1800 | * If less than requested was written or an error is returned for an | |
1801 | * otherwise correct write request the next 64-byte block which should | |
1802 | * have been written is in undefined state (mostly: original, erased, | |
1803 | * (half-)written with write error) | |
25985edc | 1804 | * - reading can happen without special restriction |
9bbf2b98 BP |
1805 | */ |
1806 | static const struct file_operations picolcd_debug_flash_fops = { | |
1807 | .owner = THIS_MODULE, | |
234e3405 | 1808 | .open = simple_open, |
9bbf2b98 BP |
1809 | .read = picolcd_debug_flash_read, |
1810 | .write = picolcd_debug_flash_write, | |
1811 | .llseek = generic_file_llseek, | |
1812 | }; | |
1813 | ||
1814 | ||
236db47c BP |
1815 | /* |
1816 | * Helper code for HID report level dumping/debugging | |
1817 | */ | |
1818 | static const char *error_codes[] = { | |
1819 | "success", "parameter missing", "data_missing", "block readonly", | |
1820 | "block not erasable", "block too big", "section overflow", | |
1821 | "invalid command length", "invalid data length", | |
1822 | }; | |
1823 | ||
1824 | static void dump_buff_as_hex(char *dst, size_t dst_sz, const u8 *data, | |
1825 | const size_t data_len) | |
1826 | { | |
1827 | int i, j; | |
1828 | for (i = j = 0; i < data_len && j + 3 < dst_sz; i++) { | |
1829 | dst[j++] = hex_asc[(data[i] >> 4) & 0x0f]; | |
1830 | dst[j++] = hex_asc[data[i] & 0x0f]; | |
1831 | dst[j++] = ' '; | |
1832 | } | |
1833 | if (j < dst_sz) { | |
1834 | dst[j--] = '\0'; | |
1835 | dst[j] = '\n'; | |
1836 | } else | |
1837 | dst[j] = '\0'; | |
1838 | } | |
1839 | ||
1840 | static void picolcd_debug_out_report(struct picolcd_data *data, | |
1841 | struct hid_device *hdev, struct hid_report *report) | |
1842 | { | |
1843 | u8 raw_data[70]; | |
1844 | int raw_size = (report->size >> 3) + 1; | |
1845 | char *buff; | |
1846 | #define BUFF_SZ 256 | |
1847 | ||
1848 | /* Avoid unnecessary overhead if debugfs is disabled */ | |
1849 | if (!hdev->debug_events) | |
1850 | return; | |
1851 | ||
1852 | buff = kmalloc(BUFF_SZ, GFP_ATOMIC); | |
1853 | if (!buff) | |
1854 | return; | |
1855 | ||
1856 | snprintf(buff, BUFF_SZ, "\nout report %d (size %d) = ", | |
1857 | report->id, raw_size); | |
1858 | hid_debug_event(hdev, buff); | |
1859 | if (raw_size + 5 > sizeof(raw_data)) { | |
0fbf8ed9 | 1860 | kfree(buff); |
236db47c BP |
1861 | hid_debug_event(hdev, " TOO BIG\n"); |
1862 | return; | |
1863 | } else { | |
1864 | raw_data[0] = report->id; | |
1865 | hid_output_report(report, raw_data); | |
1866 | dump_buff_as_hex(buff, BUFF_SZ, raw_data, raw_size); | |
1867 | hid_debug_event(hdev, buff); | |
1868 | } | |
1869 | ||
1870 | switch (report->id) { | |
1871 | case REPORT_LED_STATE: | |
1872 | /* 1 data byte with GPO state */ | |
1873 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1874 | "REPORT_LED_STATE", report->id, raw_size-1); | |
1875 | hid_debug_event(hdev, buff); | |
1876 | snprintf(buff, BUFF_SZ, "\tGPO state: 0x%02x\n", raw_data[1]); | |
1877 | hid_debug_event(hdev, buff); | |
1878 | break; | |
1879 | case REPORT_BRIGHTNESS: | |
1880 | /* 1 data byte with brightness */ | |
1881 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1882 | "REPORT_BRIGHTNESS", report->id, raw_size-1); | |
1883 | hid_debug_event(hdev, buff); | |
1884 | snprintf(buff, BUFF_SZ, "\tBrightness: 0x%02x\n", raw_data[1]); | |
1885 | hid_debug_event(hdev, buff); | |
1886 | break; | |
1887 | case REPORT_CONTRAST: | |
1888 | /* 1 data byte with contrast */ | |
1889 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1890 | "REPORT_CONTRAST", report->id, raw_size-1); | |
1891 | hid_debug_event(hdev, buff); | |
1892 | snprintf(buff, BUFF_SZ, "\tContrast: 0x%02x\n", raw_data[1]); | |
1893 | hid_debug_event(hdev, buff); | |
1894 | break; | |
1895 | case REPORT_RESET: | |
1896 | /* 2 data bytes with reset duration in ms */ | |
1897 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1898 | "REPORT_RESET", report->id, raw_size-1); | |
1899 | hid_debug_event(hdev, buff); | |
1900 | snprintf(buff, BUFF_SZ, "\tDuration: 0x%02x%02x (%dms)\n", | |
1901 | raw_data[2], raw_data[1], raw_data[2] << 8 | raw_data[1]); | |
1902 | hid_debug_event(hdev, buff); | |
1903 | break; | |
1904 | case REPORT_LCD_CMD: | |
1905 | /* 63 data bytes with LCD commands */ | |
1906 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1907 | "REPORT_LCD_CMD", report->id, raw_size-1); | |
1908 | hid_debug_event(hdev, buff); | |
1909 | /* TODO: format decoding */ | |
1910 | break; | |
1911 | case REPORT_LCD_DATA: | |
1912 | /* 63 data bytes with LCD data */ | |
1913 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1914 | "REPORT_LCD_CMD", report->id, raw_size-1); | |
1915 | /* TODO: format decoding */ | |
1916 | hid_debug_event(hdev, buff); | |
1917 | break; | |
1918 | case REPORT_LCD_CMD_DATA: | |
1919 | /* 63 data bytes with LCD commands and data */ | |
1920 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1921 | "REPORT_LCD_CMD", report->id, raw_size-1); | |
1922 | /* TODO: format decoding */ | |
1923 | hid_debug_event(hdev, buff); | |
1924 | break; | |
1925 | case REPORT_EE_READ: | |
1926 | /* 3 data bytes with read area description */ | |
1927 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1928 | "REPORT_EE_READ", report->id, raw_size-1); | |
1929 | hid_debug_event(hdev, buff); | |
1930 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", | |
1931 | raw_data[2], raw_data[1]); | |
1932 | hid_debug_event(hdev, buff); | |
1933 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); | |
1934 | hid_debug_event(hdev, buff); | |
1935 | break; | |
1936 | case REPORT_EE_WRITE: | |
1937 | /* 3+1..20 data bytes with write area description */ | |
1938 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1939 | "REPORT_EE_WRITE", report->id, raw_size-1); | |
1940 | hid_debug_event(hdev, buff); | |
1941 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", | |
1942 | raw_data[2], raw_data[1]); | |
1943 | hid_debug_event(hdev, buff); | |
1944 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); | |
1945 | hid_debug_event(hdev, buff); | |
1946 | if (raw_data[3] == 0) { | |
1947 | snprintf(buff, BUFF_SZ, "\tNo data\n"); | |
1948 | } else if (raw_data[3] + 4 <= raw_size) { | |
1949 | snprintf(buff, BUFF_SZ, "\tData: "); | |
1950 | hid_debug_event(hdev, buff); | |
1951 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); | |
1952 | } else { | |
1953 | snprintf(buff, BUFF_SZ, "\tData overflowed\n"); | |
1954 | } | |
1955 | hid_debug_event(hdev, buff); | |
1956 | break; | |
1957 | case REPORT_ERASE_MEMORY: | |
1958 | case REPORT_BL_ERASE_MEMORY: | |
1959 | /* 3 data bytes with pointer inside erase block */ | |
1960 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1961 | "REPORT_ERASE_MEMORY", report->id, raw_size-1); | |
1962 | hid_debug_event(hdev, buff); | |
1963 | switch (data->addr_sz) { | |
1964 | case 2: | |
1965 | snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x\n", | |
1966 | raw_data[2], raw_data[1]); | |
1967 | break; | |
1968 | case 3: | |
1969 | snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x%02x\n", | |
1970 | raw_data[3], raw_data[2], raw_data[1]); | |
1971 | break; | |
1972 | default: | |
1973 | snprintf(buff, BUFF_SZ, "\tNot supported\n"); | |
1974 | } | |
1975 | hid_debug_event(hdev, buff); | |
1976 | break; | |
1977 | case REPORT_READ_MEMORY: | |
1978 | case REPORT_BL_READ_MEMORY: | |
1979 | /* 4 data bytes with read area description */ | |
1980 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
1981 | "REPORT_READ_MEMORY", report->id, raw_size-1); | |
1982 | hid_debug_event(hdev, buff); | |
1983 | switch (data->addr_sz) { | |
1984 | case 2: | |
1985 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", | |
1986 | raw_data[2], raw_data[1]); | |
1987 | hid_debug_event(hdev, buff); | |
1988 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); | |
1989 | break; | |
1990 | case 3: | |
1991 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n", | |
1992 | raw_data[3], raw_data[2], raw_data[1]); | |
1993 | hid_debug_event(hdev, buff); | |
1994 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]); | |
1995 | break; | |
1996 | default: | |
1997 | snprintf(buff, BUFF_SZ, "\tNot supported\n"); | |
1998 | } | |
1999 | hid_debug_event(hdev, buff); | |
2000 | break; | |
2001 | case REPORT_WRITE_MEMORY: | |
2002 | case REPORT_BL_WRITE_MEMORY: | |
2003 | /* 4+1..32 data bytes with write adrea description */ | |
2004 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2005 | "REPORT_WRITE_MEMORY", report->id, raw_size-1); | |
2006 | hid_debug_event(hdev, buff); | |
2007 | switch (data->addr_sz) { | |
2008 | case 2: | |
2009 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", | |
2010 | raw_data[2], raw_data[1]); | |
2011 | hid_debug_event(hdev, buff); | |
2012 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); | |
2013 | hid_debug_event(hdev, buff); | |
2014 | if (raw_data[3] == 0) { | |
2015 | snprintf(buff, BUFF_SZ, "\tNo data\n"); | |
2016 | } else if (raw_data[3] + 4 <= raw_size) { | |
2017 | snprintf(buff, BUFF_SZ, "\tData: "); | |
2018 | hid_debug_event(hdev, buff); | |
2019 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); | |
2020 | } else { | |
2021 | snprintf(buff, BUFF_SZ, "\tData overflowed\n"); | |
2022 | } | |
2023 | break; | |
2024 | case 3: | |
2025 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n", | |
2026 | raw_data[3], raw_data[2], raw_data[1]); | |
2027 | hid_debug_event(hdev, buff); | |
2028 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]); | |
2029 | hid_debug_event(hdev, buff); | |
2030 | if (raw_data[4] == 0) { | |
2031 | snprintf(buff, BUFF_SZ, "\tNo data\n"); | |
2032 | } else if (raw_data[4] + 5 <= raw_size) { | |
2033 | snprintf(buff, BUFF_SZ, "\tData: "); | |
2034 | hid_debug_event(hdev, buff); | |
2035 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]); | |
2036 | } else { | |
2037 | snprintf(buff, BUFF_SZ, "\tData overflowed\n"); | |
2038 | } | |
2039 | break; | |
2040 | default: | |
2041 | snprintf(buff, BUFF_SZ, "\tNot supported\n"); | |
2042 | } | |
2043 | hid_debug_event(hdev, buff); | |
2044 | break; | |
2045 | case REPORT_SPLASH_RESTART: | |
2046 | /* TODO */ | |
2047 | break; | |
2048 | case REPORT_EXIT_KEYBOARD: | |
2049 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2050 | "REPORT_EXIT_KEYBOARD", report->id, raw_size-1); | |
2051 | hid_debug_event(hdev, buff); | |
2052 | snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n", | |
2053 | raw_data[1] | (raw_data[2] << 8), | |
2054 | raw_data[2], raw_data[1]); | |
2055 | hid_debug_event(hdev, buff); | |
2056 | break; | |
2057 | case REPORT_VERSION: | |
2058 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2059 | "REPORT_VERSION", report->id, raw_size-1); | |
2060 | hid_debug_event(hdev, buff); | |
2061 | break; | |
2062 | case REPORT_DEVID: | |
2063 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2064 | "REPORT_DEVID", report->id, raw_size-1); | |
2065 | hid_debug_event(hdev, buff); | |
2066 | break; | |
2067 | case REPORT_SPLASH_SIZE: | |
2068 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2069 | "REPORT_SPLASH_SIZE", report->id, raw_size-1); | |
2070 | hid_debug_event(hdev, buff); | |
2071 | break; | |
2072 | case REPORT_HOOK_VERSION: | |
2073 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2074 | "REPORT_HOOK_VERSION", report->id, raw_size-1); | |
2075 | hid_debug_event(hdev, buff); | |
2076 | break; | |
2077 | case REPORT_EXIT_FLASHER: | |
2078 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2079 | "REPORT_VERSION", report->id, raw_size-1); | |
2080 | hid_debug_event(hdev, buff); | |
2081 | snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n", | |
2082 | raw_data[1] | (raw_data[2] << 8), | |
2083 | raw_data[2], raw_data[1]); | |
2084 | hid_debug_event(hdev, buff); | |
2085 | break; | |
2086 | default: | |
2087 | snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", | |
2088 | "<unknown>", report->id, raw_size-1); | |
2089 | hid_debug_event(hdev, buff); | |
2090 | break; | |
2091 | } | |
2092 | wake_up_interruptible(&hdev->debug_wait); | |
2093 | kfree(buff); | |
2094 | } | |
2095 | ||
2096 | static void picolcd_debug_raw_event(struct picolcd_data *data, | |
2097 | struct hid_device *hdev, struct hid_report *report, | |
2098 | u8 *raw_data, int size) | |
2099 | { | |
2100 | char *buff; | |
2101 | ||
2102 | #define BUFF_SZ 256 | |
2103 | /* Avoid unnecessary overhead if debugfs is disabled */ | |
2104 | if (!hdev->debug_events) | |
2105 | return; | |
2106 | ||
2107 | buff = kmalloc(BUFF_SZ, GFP_ATOMIC); | |
2108 | if (!buff) | |
2109 | return; | |
2110 | ||
2111 | switch (report->id) { | |
2112 | case REPORT_ERROR_CODE: | |
2113 | /* 2 data bytes with affected report and error code */ | |
2114 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2115 | "REPORT_ERROR_CODE", report->id, size-1); | |
2116 | hid_debug_event(hdev, buff); | |
2117 | if (raw_data[2] < ARRAY_SIZE(error_codes)) | |
2118 | snprintf(buff, BUFF_SZ, "\tError code 0x%02x (%s) in reply to report 0x%02x\n", | |
2119 | raw_data[2], error_codes[raw_data[2]], raw_data[1]); | |
2120 | else | |
2121 | snprintf(buff, BUFF_SZ, "\tError code 0x%02x in reply to report 0x%02x\n", | |
2122 | raw_data[2], raw_data[1]); | |
2123 | hid_debug_event(hdev, buff); | |
2124 | break; | |
2125 | case REPORT_KEY_STATE: | |
2126 | /* 2 data bytes with key state */ | |
2127 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2128 | "REPORT_KEY_STATE", report->id, size-1); | |
2129 | hid_debug_event(hdev, buff); | |
2130 | if (raw_data[1] == 0) | |
2131 | snprintf(buff, BUFF_SZ, "\tNo key pressed\n"); | |
2132 | else if (raw_data[2] == 0) | |
2133 | snprintf(buff, BUFF_SZ, "\tOne key pressed: 0x%02x (%d)\n", | |
2134 | raw_data[1], raw_data[1]); | |
2135 | else | |
2136 | snprintf(buff, BUFF_SZ, "\tTwo keys pressed: 0x%02x (%d), 0x%02x (%d)\n", | |
2137 | raw_data[1], raw_data[1], raw_data[2], raw_data[2]); | |
2138 | hid_debug_event(hdev, buff); | |
2139 | break; | |
2140 | case REPORT_IR_DATA: | |
2141 | /* Up to 20 byes of IR scancode data */ | |
2142 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2143 | "REPORT_IR_DATA", report->id, size-1); | |
2144 | hid_debug_event(hdev, buff); | |
2145 | if (raw_data[1] == 0) { | |
2146 | snprintf(buff, BUFF_SZ, "\tUnexpectedly 0 data length\n"); | |
2147 | hid_debug_event(hdev, buff); | |
2148 | } else if (raw_data[1] + 1 <= size) { | |
2149 | snprintf(buff, BUFF_SZ, "\tData length: %d\n\tIR Data: ", | |
2150 | raw_data[1]-1); | |
2151 | hid_debug_event(hdev, buff); | |
2152 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+2, raw_data[1]-1); | |
2153 | hid_debug_event(hdev, buff); | |
2154 | } else { | |
2155 | snprintf(buff, BUFF_SZ, "\tOverflowing data length: %d\n", | |
2156 | raw_data[1]-1); | |
2157 | hid_debug_event(hdev, buff); | |
2158 | } | |
2159 | break; | |
2160 | case REPORT_EE_DATA: | |
2161 | /* Data buffer in response to REPORT_EE_READ or REPORT_EE_WRITE */ | |
2162 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2163 | "REPORT_EE_DATA", report->id, size-1); | |
2164 | hid_debug_event(hdev, buff); | |
2165 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", | |
2166 | raw_data[2], raw_data[1]); | |
2167 | hid_debug_event(hdev, buff); | |
2168 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); | |
2169 | hid_debug_event(hdev, buff); | |
2170 | if (raw_data[3] == 0) { | |
2171 | snprintf(buff, BUFF_SZ, "\tNo data\n"); | |
2172 | hid_debug_event(hdev, buff); | |
2173 | } else if (raw_data[3] + 4 <= size) { | |
2174 | snprintf(buff, BUFF_SZ, "\tData: "); | |
2175 | hid_debug_event(hdev, buff); | |
2176 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); | |
2177 | hid_debug_event(hdev, buff); | |
2178 | } else { | |
2179 | snprintf(buff, BUFF_SZ, "\tData overflowed\n"); | |
2180 | hid_debug_event(hdev, buff); | |
2181 | } | |
2182 | break; | |
2183 | case REPORT_MEMORY: | |
2184 | /* Data buffer in response to REPORT_READ_MEMORY or REPORT_WRTIE_MEMORY */ | |
2185 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2186 | "REPORT_MEMORY", report->id, size-1); | |
2187 | hid_debug_event(hdev, buff); | |
2188 | switch (data->addr_sz) { | |
2189 | case 2: | |
2190 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", | |
2191 | raw_data[2], raw_data[1]); | |
2192 | hid_debug_event(hdev, buff); | |
2193 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); | |
2194 | hid_debug_event(hdev, buff); | |
2195 | if (raw_data[3] == 0) { | |
2196 | snprintf(buff, BUFF_SZ, "\tNo data\n"); | |
2197 | } else if (raw_data[3] + 4 <= size) { | |
2198 | snprintf(buff, BUFF_SZ, "\tData: "); | |
2199 | hid_debug_event(hdev, buff); | |
2200 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); | |
2201 | } else { | |
2202 | snprintf(buff, BUFF_SZ, "\tData overflowed\n"); | |
2203 | } | |
2204 | break; | |
2205 | case 3: | |
2206 | snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n", | |
2207 | raw_data[3], raw_data[2], raw_data[1]); | |
2208 | hid_debug_event(hdev, buff); | |
2209 | snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]); | |
2210 | hid_debug_event(hdev, buff); | |
2211 | if (raw_data[4] == 0) { | |
2212 | snprintf(buff, BUFF_SZ, "\tNo data\n"); | |
2213 | } else if (raw_data[4] + 5 <= size) { | |
2214 | snprintf(buff, BUFF_SZ, "\tData: "); | |
2215 | hid_debug_event(hdev, buff); | |
2216 | dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]); | |
2217 | } else { | |
2218 | snprintf(buff, BUFF_SZ, "\tData overflowed\n"); | |
2219 | } | |
2220 | break; | |
2221 | default: | |
2222 | snprintf(buff, BUFF_SZ, "\tNot supported\n"); | |
2223 | } | |
2224 | hid_debug_event(hdev, buff); | |
2225 | break; | |
2226 | case REPORT_VERSION: | |
2227 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2228 | "REPORT_VERSION", report->id, size-1); | |
2229 | hid_debug_event(hdev, buff); | |
2230 | snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n", | |
2231 | raw_data[2], raw_data[1]); | |
2232 | hid_debug_event(hdev, buff); | |
2233 | break; | |
2234 | case REPORT_BL_ERASE_MEMORY: | |
2235 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2236 | "REPORT_BL_ERASE_MEMORY", report->id, size-1); | |
2237 | hid_debug_event(hdev, buff); | |
2238 | /* TODO */ | |
2239 | break; | |
2240 | case REPORT_BL_READ_MEMORY: | |
2241 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2242 | "REPORT_BL_READ_MEMORY", report->id, size-1); | |
2243 | hid_debug_event(hdev, buff); | |
2244 | /* TODO */ | |
2245 | break; | |
2246 | case REPORT_BL_WRITE_MEMORY: | |
2247 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2248 | "REPORT_BL_WRITE_MEMORY", report->id, size-1); | |
2249 | hid_debug_event(hdev, buff); | |
2250 | /* TODO */ | |
2251 | break; | |
2252 | case REPORT_DEVID: | |
2253 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2254 | "REPORT_DEVID", report->id, size-1); | |
2255 | hid_debug_event(hdev, buff); | |
2256 | snprintf(buff, BUFF_SZ, "\tSerial: 0x%02x%02x%02x%02x\n", | |
2257 | raw_data[1], raw_data[2], raw_data[3], raw_data[4]); | |
2258 | hid_debug_event(hdev, buff); | |
2259 | snprintf(buff, BUFF_SZ, "\tType: 0x%02x\n", | |
2260 | raw_data[5]); | |
2261 | hid_debug_event(hdev, buff); | |
2262 | break; | |
2263 | case REPORT_SPLASH_SIZE: | |
2264 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2265 | "REPORT_SPLASH_SIZE", report->id, size-1); | |
2266 | hid_debug_event(hdev, buff); | |
2267 | snprintf(buff, BUFF_SZ, "\tTotal splash space: %d\n", | |
2268 | (raw_data[2] << 8) | raw_data[1]); | |
2269 | hid_debug_event(hdev, buff); | |
2270 | snprintf(buff, BUFF_SZ, "\tUsed splash space: %d\n", | |
2271 | (raw_data[4] << 8) | raw_data[3]); | |
2272 | hid_debug_event(hdev, buff); | |
2273 | break; | |
2274 | case REPORT_HOOK_VERSION: | |
2275 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2276 | "REPORT_HOOK_VERSION", report->id, size-1); | |
2277 | hid_debug_event(hdev, buff); | |
2278 | snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n", | |
2279 | raw_data[1], raw_data[2]); | |
2280 | hid_debug_event(hdev, buff); | |
2281 | break; | |
2282 | default: | |
2283 | snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", | |
2284 | "<unknown>", report->id, size-1); | |
2285 | hid_debug_event(hdev, buff); | |
2286 | break; | |
2287 | } | |
2288 | wake_up_interruptible(&hdev->debug_wait); | |
2289 | kfree(buff); | |
2290 | } | |
9bbf2b98 BP |
2291 | |
2292 | static void picolcd_init_devfs(struct picolcd_data *data, | |
2293 | struct hid_report *eeprom_r, struct hid_report *eeprom_w, | |
2294 | struct hid_report *flash_r, struct hid_report *flash_w, | |
2295 | struct hid_report *reset) | |
2296 | { | |
2297 | struct hid_device *hdev = data->hdev; | |
2298 | ||
2299 | mutex_init(&data->mutex_flash); | |
2300 | ||
2301 | /* reset */ | |
2302 | if (reset) | |
2303 | data->debug_reset = debugfs_create_file("reset", 0600, | |
2304 | hdev->debug_dir, data, &picolcd_debug_reset_fops); | |
2305 | ||
2306 | /* eeprom */ | |
2307 | if (eeprom_r || eeprom_w) | |
2308 | data->debug_eeprom = debugfs_create_file("eeprom", | |
2309 | (eeprom_w ? S_IWUSR : 0) | (eeprom_r ? S_IRUSR : 0), | |
2310 | hdev->debug_dir, data, &picolcd_debug_eeprom_fops); | |
2311 | ||
2312 | /* flash */ | |
2313 | if (flash_r && flash_r->maxfield == 1 && flash_r->field[0]->report_size == 8) | |
2314 | data->addr_sz = flash_r->field[0]->report_count - 1; | |
2315 | else | |
2316 | data->addr_sz = -1; | |
2317 | if (data->addr_sz == 2 || data->addr_sz == 3) { | |
2318 | data->debug_flash = debugfs_create_file("flash", | |
2319 | (flash_w ? S_IWUSR : 0) | (flash_r ? S_IRUSR : 0), | |
2320 | hdev->debug_dir, data, &picolcd_debug_flash_fops); | |
2321 | } else if (flash_r || flash_w) | |
4291ee30 | 2322 | hid_warn(hdev, "Unexpected FLASH access reports, please submit rdesc for review\n"); |
9bbf2b98 BP |
2323 | } |
2324 | ||
2325 | static void picolcd_exit_devfs(struct picolcd_data *data) | |
2326 | { | |
2327 | struct dentry *dent; | |
2328 | ||
2329 | dent = data->debug_reset; | |
2330 | data->debug_reset = NULL; | |
2331 | if (dent) | |
2332 | debugfs_remove(dent); | |
2333 | dent = data->debug_eeprom; | |
2334 | data->debug_eeprom = NULL; | |
2335 | if (dent) | |
2336 | debugfs_remove(dent); | |
2337 | dent = data->debug_flash; | |
2338 | data->debug_flash = NULL; | |
2339 | if (dent) | |
2340 | debugfs_remove(dent); | |
2341 | mutex_destroy(&data->mutex_flash); | |
2342 | } | |
236db47c | 2343 | #else |
9d71ea05 BP |
2344 | static inline void picolcd_debug_raw_event(struct picolcd_data *data, |
2345 | struct hid_device *hdev, struct hid_report *report, | |
2346 | u8 *raw_data, int size) | |
2347 | { | |
2348 | } | |
2349 | static inline void picolcd_init_devfs(struct picolcd_data *data, | |
2350 | struct hid_report *eeprom_r, struct hid_report *eeprom_w, | |
2351 | struct hid_report *flash_r, struct hid_report *flash_w, | |
2352 | struct hid_report *reset) | |
2353 | { | |
2354 | } | |
2355 | static inline void picolcd_exit_devfs(struct picolcd_data *data) | |
9bbf2b98 BP |
2356 | { |
2357 | } | |
2358 | #endif /* CONFIG_DEBUG_FS */ | |
236db47c BP |
2359 | |
2360 | /* | |
2361 | * Handle raw report as sent by device | |
2362 | */ | |
2363 | static int picolcd_raw_event(struct hid_device *hdev, | |
2364 | struct hid_report *report, u8 *raw_data, int size) | |
2365 | { | |
2366 | struct picolcd_data *data = hid_get_drvdata(hdev); | |
2367 | unsigned long flags; | |
2368 | int ret = 0; | |
2369 | ||
2370 | if (!data) | |
2371 | return 1; | |
2372 | ||
2373 | if (report->id == REPORT_KEY_STATE) { | |
2374 | if (data->input_keys) | |
2375 | ret = picolcd_raw_keypad(data, report, raw_data+1, size-1); | |
2376 | } else if (report->id == REPORT_IR_DATA) { | |
2377 | if (data->input_cir) | |
2378 | ret = picolcd_raw_cir(data, report, raw_data+1, size-1); | |
2379 | } else { | |
2380 | spin_lock_irqsave(&data->lock, flags); | |
2381 | /* | |
2382 | * We let the caller of picolcd_send_and_wait() check if the | |
2383 | * report we got is one of the expected ones or not. | |
2384 | */ | |
2385 | if (data->pending) { | |
2386 | memcpy(data->pending->raw_data, raw_data+1, size-1); | |
2387 | data->pending->raw_size = size-1; | |
2388 | data->pending->in_report = report; | |
2389 | complete(&data->pending->ready); | |
2390 | } | |
2391 | spin_unlock_irqrestore(&data->lock, flags); | |
2392 | } | |
2393 | ||
2394 | picolcd_debug_raw_event(data, hdev, report, raw_data, size); | |
2395 | return 1; | |
2396 | } | |
2397 | ||
9d71ea05 BP |
2398 | #ifdef CONFIG_PM |
2399 | static int picolcd_suspend(struct hid_device *hdev, pm_message_t message) | |
2400 | { | |
5b1b0b81 | 2401 | if (PMSG_IS_AUTO(message)) |
9d71ea05 BP |
2402 | return 0; |
2403 | ||
2404 | picolcd_suspend_backlight(hid_get_drvdata(hdev)); | |
2405 | dbg_hid(PICOLCD_NAME " device ready for suspend\n"); | |
2406 | return 0; | |
2407 | } | |
2408 | ||
2409 | static int picolcd_resume(struct hid_device *hdev) | |
2410 | { | |
2411 | int ret; | |
2412 | ret = picolcd_resume_backlight(hid_get_drvdata(hdev)); | |
2413 | if (ret) | |
2414 | dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret); | |
2415 | return 0; | |
2416 | } | |
2417 | ||
2418 | static int picolcd_reset_resume(struct hid_device *hdev) | |
2419 | { | |
2420 | int ret; | |
2421 | ret = picolcd_reset(hdev); | |
2422 | if (ret) | |
2423 | dbg_hid(PICOLCD_NAME " resetting our device failed: %d\n", ret); | |
2424 | ret = picolcd_fb_reset(hid_get_drvdata(hdev), 0); | |
2425 | if (ret) | |
2426 | dbg_hid(PICOLCD_NAME " restoring framebuffer content failed: %d\n", ret); | |
2427 | ret = picolcd_resume_lcd(hid_get_drvdata(hdev)); | |
2428 | if (ret) | |
2429 | dbg_hid(PICOLCD_NAME " restoring lcd failed: %d\n", ret); | |
2430 | ret = picolcd_resume_backlight(hid_get_drvdata(hdev)); | |
2431 | if (ret) | |
2432 | dbg_hid(PICOLCD_NAME " restoring backlight failed: %d\n", ret); | |
2433 | picolcd_leds_set(hid_get_drvdata(hdev)); | |
2434 | return 0; | |
2435 | } | |
2436 | #endif | |
2437 | ||
236db47c BP |
2438 | /* initialize keypad input device */ |
2439 | static int picolcd_init_keys(struct picolcd_data *data, | |
2440 | struct hid_report *report) | |
2441 | { | |
2442 | struct hid_device *hdev = data->hdev; | |
2443 | struct input_dev *idev; | |
2444 | int error, i; | |
2445 | ||
2446 | if (!report) | |
2447 | return -ENODEV; | |
2448 | if (report->maxfield != 1 || report->field[0]->report_count != 2 || | |
2449 | report->field[0]->report_size != 8) { | |
4291ee30 | 2450 | hid_err(hdev, "unsupported KEY_STATE report\n"); |
236db47c BP |
2451 | return -EINVAL; |
2452 | } | |
2453 | ||
2454 | idev = input_allocate_device(); | |
2455 | if (idev == NULL) { | |
4291ee30 | 2456 | hid_err(hdev, "failed to allocate input device\n"); |
236db47c BP |
2457 | return -ENOMEM; |
2458 | } | |
2459 | input_set_drvdata(idev, hdev); | |
2460 | memcpy(data->keycode, def_keymap, sizeof(def_keymap)); | |
2461 | idev->name = hdev->name; | |
2462 | idev->phys = hdev->phys; | |
2463 | idev->uniq = hdev->uniq; | |
2464 | idev->id.bustype = hdev->bus; | |
2465 | idev->id.vendor = hdev->vendor; | |
2466 | idev->id.product = hdev->product; | |
2467 | idev->id.version = hdev->version; | |
2468 | idev->dev.parent = hdev->dev.parent; | |
2469 | idev->keycode = &data->keycode; | |
2470 | idev->keycodemax = PICOLCD_KEYS; | |
2471 | idev->keycodesize = sizeof(data->keycode[0]); | |
2472 | input_set_capability(idev, EV_MSC, MSC_SCAN); | |
2473 | set_bit(EV_REP, idev->evbit); | |
2474 | for (i = 0; i < PICOLCD_KEYS; i++) | |
2475 | input_set_capability(idev, EV_KEY, data->keycode[i]); | |
2476 | error = input_register_device(idev); | |
2477 | if (error) { | |
4291ee30 | 2478 | hid_err(hdev, "error registering the input device\n"); |
236db47c BP |
2479 | input_free_device(idev); |
2480 | return error; | |
2481 | } | |
2482 | data->input_keys = idev; | |
2483 | return 0; | |
2484 | } | |
2485 | ||
2486 | static void picolcd_exit_keys(struct picolcd_data *data) | |
2487 | { | |
2488 | struct input_dev *idev = data->input_keys; | |
2489 | ||
2490 | data->input_keys = NULL; | |
2491 | if (idev) | |
2492 | input_unregister_device(idev); | |
2493 | } | |
2494 | ||
2495 | /* initialize CIR input device */ | |
2496 | static inline int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report) | |
2497 | { | |
2498 | /* support not implemented yet */ | |
2499 | return 0; | |
2500 | } | |
2501 | ||
2502 | static inline void picolcd_exit_cir(struct picolcd_data *data) | |
2503 | { | |
2504 | } | |
2505 | ||
2506 | static int picolcd_probe_lcd(struct hid_device *hdev, struct picolcd_data *data) | |
2507 | { | |
236db47c BP |
2508 | int error; |
2509 | ||
2510 | error = picolcd_check_version(hdev); | |
2511 | if (error) | |
2512 | return error; | |
2513 | ||
2514 | if (data->version[0] != 0 && data->version[1] != 3) | |
4291ee30 JP |
2515 | hid_info(hdev, "Device with untested firmware revision, please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n", |
2516 | dev_name(&hdev->dev)); | |
236db47c BP |
2517 | |
2518 | /* Setup keypad input device */ | |
2519 | error = picolcd_init_keys(data, picolcd_in_report(REPORT_KEY_STATE, hdev)); | |
2520 | if (error) | |
2521 | goto err; | |
2522 | ||
2523 | /* Setup CIR input device */ | |
2524 | error = picolcd_init_cir(data, picolcd_in_report(REPORT_IR_DATA, hdev)); | |
2525 | if (error) | |
2526 | goto err; | |
2527 | ||
b8c21cf6 BP |
2528 | /* Set up the framebuffer device */ |
2529 | error = picolcd_init_framebuffer(data); | |
2530 | if (error) | |
2531 | goto err; | |
2532 | ||
e8d931bb BP |
2533 | /* Setup lcd class device */ |
2534 | error = picolcd_init_lcd(data, picolcd_out_report(REPORT_CONTRAST, hdev)); | |
2535 | if (error) | |
2536 | goto err; | |
2537 | ||
f1c21761 BP |
2538 | /* Setup backlight class device */ |
2539 | error = picolcd_init_backlight(data, picolcd_out_report(REPORT_BRIGHTNESS, hdev)); | |
2540 | if (error) | |
2541 | goto err; | |
2542 | ||
467d6523 BP |
2543 | /* Setup the LED class devices */ |
2544 | error = picolcd_init_leds(data, picolcd_out_report(REPORT_LED_STATE, hdev)); | |
2545 | if (error) | |
2546 | goto err; | |
2547 | ||
9bbf2b98 BP |
2548 | picolcd_init_devfs(data, picolcd_out_report(REPORT_EE_READ, hdev), |
2549 | picolcd_out_report(REPORT_EE_WRITE, hdev), | |
2550 | picolcd_out_report(REPORT_READ_MEMORY, hdev), | |
2551 | picolcd_out_report(REPORT_WRITE_MEMORY, hdev), | |
2552 | picolcd_out_report(REPORT_RESET, hdev)); | |
236db47c BP |
2553 | return 0; |
2554 | err: | |
467d6523 | 2555 | picolcd_exit_leds(data); |
f1c21761 | 2556 | picolcd_exit_backlight(data); |
e8d931bb | 2557 | picolcd_exit_lcd(data); |
b8c21cf6 | 2558 | picolcd_exit_framebuffer(data); |
236db47c BP |
2559 | picolcd_exit_cir(data); |
2560 | picolcd_exit_keys(data); | |
2561 | return error; | |
2562 | } | |
2563 | ||
2564 | static int picolcd_probe_bootloader(struct hid_device *hdev, struct picolcd_data *data) | |
2565 | { | |
236db47c BP |
2566 | int error; |
2567 | ||
2568 | error = picolcd_check_version(hdev); | |
2569 | if (error) | |
2570 | return error; | |
2571 | ||
2572 | if (data->version[0] != 1 && data->version[1] != 0) | |
4291ee30 JP |
2573 | hid_info(hdev, "Device with untested bootloader revision, please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n", |
2574 | dev_name(&hdev->dev)); | |
236db47c | 2575 | |
9bbf2b98 BP |
2576 | picolcd_init_devfs(data, NULL, NULL, |
2577 | picolcd_out_report(REPORT_BL_READ_MEMORY, hdev), | |
2578 | picolcd_out_report(REPORT_BL_WRITE_MEMORY, hdev), NULL); | |
236db47c BP |
2579 | return 0; |
2580 | } | |
2581 | ||
2582 | static int picolcd_probe(struct hid_device *hdev, | |
2583 | const struct hid_device_id *id) | |
2584 | { | |
2585 | struct picolcd_data *data; | |
2586 | int error = -ENOMEM; | |
2587 | ||
2588 | dbg_hid(PICOLCD_NAME " hardware probe...\n"); | |
2589 | ||
2590 | /* | |
2591 | * Let's allocate the picolcd data structure, set some reasonable | |
2592 | * defaults, and associate it with the device | |
2593 | */ | |
2594 | data = kzalloc(sizeof(struct picolcd_data), GFP_KERNEL); | |
2595 | if (data == NULL) { | |
4291ee30 | 2596 | hid_err(hdev, "can't allocate space for Minibox PicoLCD device data\n"); |
236db47c BP |
2597 | error = -ENOMEM; |
2598 | goto err_no_cleanup; | |
2599 | } | |
2600 | ||
2601 | spin_lock_init(&data->lock); | |
2602 | mutex_init(&data->mutex); | |
2603 | data->hdev = hdev; | |
0b5adf92 | 2604 | data->opmode_delay = 5000; |
236db47c BP |
2605 | if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER) |
2606 | data->status |= PICOLCD_BOOTLOADER; | |
2607 | hid_set_drvdata(hdev, data); | |
2608 | ||
2609 | /* Parse the device reports and start it up */ | |
2610 | error = hid_parse(hdev); | |
2611 | if (error) { | |
4291ee30 | 2612 | hid_err(hdev, "device report parse failed\n"); |
236db47c BP |
2613 | goto err_cleanup_data; |
2614 | } | |
2615 | ||
2616 | /* We don't use hidinput but hid_hw_start() fails if nothing is | |
2617 | * claimed. So spoof claimed input. */ | |
2618 | hdev->claimed = HID_CLAIMED_INPUT; | |
2619 | error = hid_hw_start(hdev, 0); | |
2620 | hdev->claimed = 0; | |
2621 | if (error) { | |
4291ee30 | 2622 | hid_err(hdev, "hardware start failed\n"); |
236db47c BP |
2623 | goto err_cleanup_data; |
2624 | } | |
2625 | ||
5bea7660 | 2626 | error = hid_hw_open(hdev); |
236db47c | 2627 | if (error) { |
4291ee30 | 2628 | hid_err(hdev, "failed to open input interrupt pipe for key and IR events\n"); |
236db47c BP |
2629 | goto err_cleanup_hid_hw; |
2630 | } | |
2631 | ||
0b5adf92 | 2632 | error = device_create_file(&hdev->dev, &dev_attr_operation_mode_delay); |
236db47c | 2633 | if (error) { |
4291ee30 | 2634 | hid_err(hdev, "failed to create sysfs attributes\n"); |
236db47c BP |
2635 | goto err_cleanup_hid_ll; |
2636 | } | |
2637 | ||
0b5adf92 BP |
2638 | error = device_create_file(&hdev->dev, &dev_attr_operation_mode); |
2639 | if (error) { | |
4291ee30 | 2640 | hid_err(hdev, "failed to create sysfs attributes\n"); |
0b5adf92 BP |
2641 | goto err_cleanup_sysfs1; |
2642 | } | |
2643 | ||
236db47c BP |
2644 | if (data->status & PICOLCD_BOOTLOADER) |
2645 | error = picolcd_probe_bootloader(hdev, data); | |
2646 | else | |
2647 | error = picolcd_probe_lcd(hdev, data); | |
2648 | if (error) | |
0b5adf92 | 2649 | goto err_cleanup_sysfs2; |
236db47c BP |
2650 | |
2651 | dbg_hid(PICOLCD_NAME " activated and initialized\n"); | |
2652 | return 0; | |
2653 | ||
0b5adf92 | 2654 | err_cleanup_sysfs2: |
236db47c | 2655 | device_remove_file(&hdev->dev, &dev_attr_operation_mode); |
0b5adf92 BP |
2656 | err_cleanup_sysfs1: |
2657 | device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay); | |
236db47c | 2658 | err_cleanup_hid_ll: |
5bea7660 | 2659 | hid_hw_close(hdev); |
236db47c BP |
2660 | err_cleanup_hid_hw: |
2661 | hid_hw_stop(hdev); | |
2662 | err_cleanup_data: | |
2663 | kfree(data); | |
2664 | err_no_cleanup: | |
2665 | hid_set_drvdata(hdev, NULL); | |
2666 | ||
2667 | return error; | |
2668 | } | |
2669 | ||
2670 | static void picolcd_remove(struct hid_device *hdev) | |
2671 | { | |
2672 | struct picolcd_data *data = hid_get_drvdata(hdev); | |
2673 | unsigned long flags; | |
2674 | ||
2675 | dbg_hid(PICOLCD_NAME " hardware remove...\n"); | |
2676 | spin_lock_irqsave(&data->lock, flags); | |
2677 | data->status |= PICOLCD_FAILED; | |
2678 | spin_unlock_irqrestore(&data->lock, flags); | |
225b4590 BP |
2679 | #ifdef CONFIG_HID_PICOLCD_FB |
2680 | /* short-circuit FB as early as possible in order to | |
2681 | * avoid long delays if we host console. | |
2682 | */ | |
2683 | if (data->fb_info) | |
2684 | data->fb_info->par = NULL; | |
2685 | #endif | |
236db47c | 2686 | |
9bbf2b98 | 2687 | picolcd_exit_devfs(data); |
236db47c | 2688 | device_remove_file(&hdev->dev, &dev_attr_operation_mode); |
0b5adf92 | 2689 | device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay); |
5bea7660 | 2690 | hid_hw_close(hdev); |
236db47c BP |
2691 | hid_hw_stop(hdev); |
2692 | hid_set_drvdata(hdev, NULL); | |
2693 | ||
2694 | /* Shortcut potential pending reply that will never arrive */ | |
2695 | spin_lock_irqsave(&data->lock, flags); | |
2696 | if (data->pending) | |
2697 | complete(&data->pending->ready); | |
2698 | spin_unlock_irqrestore(&data->lock, flags); | |
2699 | ||
467d6523 BP |
2700 | /* Cleanup LED */ |
2701 | picolcd_exit_leds(data); | |
b8c21cf6 | 2702 | /* Clean up the framebuffer */ |
f1c21761 | 2703 | picolcd_exit_backlight(data); |
e8d931bb | 2704 | picolcd_exit_lcd(data); |
b8c21cf6 | 2705 | picolcd_exit_framebuffer(data); |
236db47c BP |
2706 | /* Cleanup input */ |
2707 | picolcd_exit_cir(data); | |
2708 | picolcd_exit_keys(data); | |
2709 | ||
2710 | mutex_destroy(&data->mutex); | |
2711 | /* Finally, clean up the picolcd data itself */ | |
2712 | kfree(data); | |
2713 | } | |
2714 | ||
2715 | static const struct hid_device_id picolcd_devices[] = { | |
2716 | { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) }, | |
2717 | { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) }, | |
2718 | { } | |
2719 | }; | |
2720 | MODULE_DEVICE_TABLE(hid, picolcd_devices); | |
2721 | ||
2722 | static struct hid_driver picolcd_driver = { | |
2723 | .name = "hid-picolcd", | |
2724 | .id_table = picolcd_devices, | |
2725 | .probe = picolcd_probe, | |
2726 | .remove = picolcd_remove, | |
2727 | .raw_event = picolcd_raw_event, | |
9d71ea05 BP |
2728 | #ifdef CONFIG_PM |
2729 | .suspend = picolcd_suspend, | |
2730 | .resume = picolcd_resume, | |
2731 | .reset_resume = picolcd_reset_resume, | |
2732 | #endif | |
236db47c BP |
2733 | }; |
2734 | ||
2735 | static int __init picolcd_init(void) | |
2736 | { | |
2737 | return hid_register_driver(&picolcd_driver); | |
2738 | } | |
2739 | ||
2740 | static void __exit picolcd_exit(void) | |
2741 | { | |
2742 | hid_unregister_driver(&picolcd_driver); | |
225b4590 | 2743 | #ifdef CONFIG_HID_PICOLCD_FB |
c4ffafa5 | 2744 | flush_work_sync(&picolcd_fb_cleanup); |
225b4590 BP |
2745 | WARN_ON(fb_pending); |
2746 | #endif | |
236db47c BP |
2747 | } |
2748 | ||
2749 | module_init(picolcd_init); | |
2750 | module_exit(picolcd_exit); | |
2751 | MODULE_DESCRIPTION("Minibox graphics PicoLCD Driver"); | |
2752 | MODULE_LICENSE("GPL v2"); |