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0d4ff4df JK |
1 | /* |
2 | * broadsheetfb.c -- FB driver for E-Ink Broadsheet controller | |
3 | * | |
4 | * Copyright (C) 2008, Jaya Kumar | |
5 | * | |
6 | * This file is subject to the terms and conditions of the GNU General Public | |
7 | * License. See the file COPYING in the main directory of this archive for | |
8 | * more details. | |
9 | * | |
10 | * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven. | |
11 | * | |
12 | * This driver is written to be used with the Broadsheet display controller. | |
13 | * | |
14 | * It is intended to be architecture independent. A board specific driver | |
15 | * must be used to perform all the physical IO interactions. | |
16 | * | |
17 | */ | |
18 | ||
19 | #include <linux/module.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/vmalloc.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/fb.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/list.h> | |
b32bfc38 | 32 | #include <linux/firmware.h> |
0d4ff4df JK |
33 | #include <linux/uaccess.h> |
34 | ||
35 | #include <video/broadsheetfb.h> | |
36 | ||
c1c341a0 JK |
37 | /* track panel specific parameters */ |
38 | struct panel_info { | |
39 | int w; | |
40 | int h; | |
41 | u16 sdcfg; | |
42 | u16 gdcfg; | |
43 | u16 lutfmt; | |
44 | u16 fsynclen; | |
45 | u16 fendfbegin; | |
46 | u16 lsynclen; | |
47 | u16 lendlbegin; | |
48 | u16 pixclk; | |
49 | }; | |
50 | ||
51 | /* table of panel specific parameters to be indexed into by the board drivers */ | |
52 | static struct panel_info panel_table[] = { | |
53 | { /* standard 6" on TFT backplane */ | |
54 | .w = 800, | |
55 | .h = 600, | |
56 | .sdcfg = (100 | (1 << 8) | (1 << 9)), | |
57 | .gdcfg = 2, | |
58 | .lutfmt = (4 | (1 << 7)), | |
59 | .fsynclen = 4, | |
60 | .fendfbegin = (10 << 8) | 4, | |
61 | .lsynclen = 10, | |
62 | .lendlbegin = (100 << 8) | 4, | |
63 | .pixclk = 6, | |
64 | }, | |
65 | { /* custom 3.7" flexible on PET or steel */ | |
66 | .w = 320, | |
67 | .h = 240, | |
68 | .sdcfg = (67 | (0 << 8) | (0 << 9) | (0 << 10) | (0 << 12)), | |
69 | .gdcfg = 3, | |
70 | .lutfmt = (4 | (1 << 7)), | |
71 | .fsynclen = 0, | |
72 | .fendfbegin = (80 << 8) | 4, | |
73 | .lsynclen = 10, | |
74 | .lendlbegin = (80 << 8) | 20, | |
75 | .pixclk = 14, | |
76 | }, | |
77 | { /* standard 9.7" on TFT backplane */ | |
78 | .w = 1200, | |
79 | .h = 825, | |
80 | .sdcfg = (100 | (1 << 8) | (1 << 9) | (0 << 10) | (0 << 12)), | |
81 | .gdcfg = 2, | |
82 | .lutfmt = (4 | (1 << 7)), | |
83 | .fsynclen = 0, | |
84 | .fendfbegin = (4 << 8) | 4, | |
85 | .lsynclen = 4, | |
86 | .lendlbegin = (60 << 8) | 10, | |
87 | .pixclk = 3, | |
88 | }, | |
89 | }; | |
90 | ||
0d4ff4df JK |
91 | #define DPY_W 800 |
92 | #define DPY_H 600 | |
93 | ||
48c68c4f | 94 | static struct fb_fix_screeninfo broadsheetfb_fix = { |
0d4ff4df JK |
95 | .id = "broadsheetfb", |
96 | .type = FB_TYPE_PACKED_PIXELS, | |
97 | .visual = FB_VISUAL_STATIC_PSEUDOCOLOR, | |
98 | .xpanstep = 0, | |
99 | .ypanstep = 0, | |
100 | .ywrapstep = 0, | |
101 | .line_length = DPY_W, | |
102 | .accel = FB_ACCEL_NONE, | |
103 | }; | |
104 | ||
48c68c4f | 105 | static struct fb_var_screeninfo broadsheetfb_var = { |
0d4ff4df JK |
106 | .xres = DPY_W, |
107 | .yres = DPY_H, | |
108 | .xres_virtual = DPY_W, | |
109 | .yres_virtual = DPY_H, | |
110 | .bits_per_pixel = 8, | |
111 | .grayscale = 1, | |
112 | .red = { 0, 4, 0 }, | |
113 | .green = { 0, 4, 0 }, | |
114 | .blue = { 0, 4, 0 }, | |
115 | .transp = { 0, 0, 0 }, | |
116 | }; | |
117 | ||
118 | /* main broadsheetfb functions */ | |
2afb1898 | 119 | static void broadsheet_gpio_issue_data(struct broadsheetfb_par *par, u16 data) |
0d4ff4df JK |
120 | { |
121 | par->board->set_ctl(par, BS_WR, 0); | |
122 | par->board->set_hdb(par, data); | |
123 | par->board->set_ctl(par, BS_WR, 1); | |
124 | } | |
125 | ||
2afb1898 | 126 | static void broadsheet_gpio_issue_cmd(struct broadsheetfb_par *par, u16 data) |
0d4ff4df JK |
127 | { |
128 | par->board->set_ctl(par, BS_DC, 0); | |
2afb1898 | 129 | broadsheet_gpio_issue_data(par, data); |
0d4ff4df JK |
130 | } |
131 | ||
2afb1898 | 132 | static void broadsheet_gpio_send_command(struct broadsheetfb_par *par, u16 data) |
0d4ff4df JK |
133 | { |
134 | par->board->wait_for_rdy(par); | |
135 | ||
136 | par->board->set_ctl(par, BS_CS, 0); | |
2afb1898 | 137 | broadsheet_gpio_issue_cmd(par, data); |
0d4ff4df JK |
138 | par->board->set_ctl(par, BS_DC, 1); |
139 | par->board->set_ctl(par, BS_CS, 1); | |
140 | } | |
141 | ||
2afb1898 | 142 | static void broadsheet_gpio_send_cmdargs(struct broadsheetfb_par *par, u16 cmd, |
0d4ff4df JK |
143 | int argc, u16 *argv) |
144 | { | |
145 | int i; | |
146 | ||
147 | par->board->wait_for_rdy(par); | |
148 | ||
149 | par->board->set_ctl(par, BS_CS, 0); | |
2afb1898 | 150 | broadsheet_gpio_issue_cmd(par, cmd); |
0d4ff4df JK |
151 | par->board->set_ctl(par, BS_DC, 1); |
152 | ||
153 | for (i = 0; i < argc; i++) | |
2afb1898 | 154 | broadsheet_gpio_issue_data(par, argv[i]); |
0d4ff4df JK |
155 | par->board->set_ctl(par, BS_CS, 1); |
156 | } | |
157 | ||
2afb1898 JK |
158 | static void broadsheet_mmio_send_cmdargs(struct broadsheetfb_par *par, u16 cmd, |
159 | int argc, u16 *argv) | |
160 | { | |
161 | int i; | |
162 | ||
163 | par->board->mmio_write(par, BS_MMIO_CMD, cmd); | |
164 | ||
165 | for (i = 0; i < argc; i++) | |
166 | par->board->mmio_write(par, BS_MMIO_DATA, argv[i]); | |
167 | } | |
168 | ||
169 | static void broadsheet_send_command(struct broadsheetfb_par *par, u16 data) | |
170 | { | |
171 | if (par->board->mmio_write) | |
172 | par->board->mmio_write(par, BS_MMIO_CMD, data); | |
173 | else | |
174 | broadsheet_gpio_send_command(par, data); | |
175 | } | |
176 | ||
177 | static void broadsheet_send_cmdargs(struct broadsheetfb_par *par, u16 cmd, | |
178 | int argc, u16 *argv) | |
179 | { | |
180 | if (par->board->mmio_write) | |
181 | broadsheet_mmio_send_cmdargs(par, cmd, argc, argv); | |
182 | else | |
183 | broadsheet_gpio_send_cmdargs(par, cmd, argc, argv); | |
184 | } | |
185 | ||
186 | static void broadsheet_gpio_burst_write(struct broadsheetfb_par *par, int size, | |
0d4ff4df JK |
187 | u16 *data) |
188 | { | |
189 | int i; | |
190 | u16 tmp; | |
191 | ||
192 | par->board->set_ctl(par, BS_CS, 0); | |
193 | par->board->set_ctl(par, BS_DC, 1); | |
194 | ||
195 | for (i = 0; i < size; i++) { | |
196 | par->board->set_ctl(par, BS_WR, 0); | |
197 | tmp = (data[i] & 0x0F) << 4; | |
198 | tmp |= (data[i] & 0x0F00) << 4; | |
199 | par->board->set_hdb(par, tmp); | |
200 | par->board->set_ctl(par, BS_WR, 1); | |
201 | } | |
202 | ||
203 | par->board->set_ctl(par, BS_CS, 1); | |
204 | } | |
205 | ||
2afb1898 JK |
206 | static void broadsheet_mmio_burst_write(struct broadsheetfb_par *par, int size, |
207 | u16 *data) | |
208 | { | |
209 | int i; | |
210 | u16 tmp; | |
211 | ||
212 | for (i = 0; i < size; i++) { | |
213 | tmp = (data[i] & 0x0F) << 4; | |
214 | tmp |= (data[i] & 0x0F00) << 4; | |
215 | par->board->mmio_write(par, BS_MMIO_DATA, tmp); | |
216 | } | |
217 | ||
218 | } | |
219 | ||
220 | static void broadsheet_burst_write(struct broadsheetfb_par *par, int size, | |
221 | u16 *data) | |
222 | { | |
223 | if (par->board->mmio_write) | |
224 | broadsheet_mmio_burst_write(par, size, data); | |
225 | else | |
226 | broadsheet_gpio_burst_write(par, size, data); | |
227 | } | |
228 | ||
229 | static u16 broadsheet_gpio_get_data(struct broadsheetfb_par *par) | |
0d4ff4df JK |
230 | { |
231 | u16 res; | |
232 | /* wait for ready to go hi. (lo is busy) */ | |
233 | par->board->wait_for_rdy(par); | |
234 | ||
235 | /* cs lo, dc lo for cmd, we lo for each data, db as usual */ | |
236 | par->board->set_ctl(par, BS_DC, 1); | |
237 | par->board->set_ctl(par, BS_CS, 0); | |
238 | par->board->set_ctl(par, BS_WR, 0); | |
239 | ||
240 | res = par->board->get_hdb(par); | |
241 | ||
242 | /* strobe wr */ | |
243 | par->board->set_ctl(par, BS_WR, 1); | |
244 | par->board->set_ctl(par, BS_CS, 1); | |
245 | ||
246 | return res; | |
247 | } | |
248 | ||
2afb1898 JK |
249 | |
250 | static u16 broadsheet_get_data(struct broadsheetfb_par *par) | |
251 | { | |
252 | if (par->board->mmio_read) | |
253 | return par->board->mmio_read(par); | |
254 | else | |
255 | return broadsheet_gpio_get_data(par); | |
256 | } | |
257 | ||
258 | static void broadsheet_gpio_write_reg(struct broadsheetfb_par *par, u16 reg, | |
0d4ff4df JK |
259 | u16 data) |
260 | { | |
261 | /* wait for ready to go hi. (lo is busy) */ | |
262 | par->board->wait_for_rdy(par); | |
263 | ||
264 | /* cs lo, dc lo for cmd, we lo for each data, db as usual */ | |
265 | par->board->set_ctl(par, BS_CS, 0); | |
266 | ||
2afb1898 | 267 | broadsheet_gpio_issue_cmd(par, BS_CMD_WR_REG); |
0d4ff4df JK |
268 | |
269 | par->board->set_ctl(par, BS_DC, 1); | |
270 | ||
2afb1898 JK |
271 | broadsheet_gpio_issue_data(par, reg); |
272 | broadsheet_gpio_issue_data(par, data); | |
0d4ff4df JK |
273 | |
274 | par->board->set_ctl(par, BS_CS, 1); | |
275 | } | |
276 | ||
2afb1898 JK |
277 | static void broadsheet_mmio_write_reg(struct broadsheetfb_par *par, u16 reg, |
278 | u16 data) | |
279 | { | |
280 | par->board->mmio_write(par, BS_MMIO_CMD, BS_CMD_WR_REG); | |
281 | par->board->mmio_write(par, BS_MMIO_DATA, reg); | |
282 | par->board->mmio_write(par, BS_MMIO_DATA, data); | |
283 | ||
284 | } | |
285 | ||
286 | static void broadsheet_write_reg(struct broadsheetfb_par *par, u16 reg, | |
287 | u16 data) | |
288 | { | |
289 | if (par->board->mmio_write) | |
290 | broadsheet_mmio_write_reg(par, reg, data); | |
291 | else | |
292 | broadsheet_gpio_write_reg(par, reg, data); | |
293 | } | |
294 | ||
c1c341a0 JK |
295 | static void broadsheet_write_reg32(struct broadsheetfb_par *par, u16 reg, |
296 | u32 data) | |
297 | { | |
298 | broadsheet_write_reg(par, reg, cpu_to_le32(data) & 0xFFFF); | |
299 | broadsheet_write_reg(par, reg + 2, (cpu_to_le32(data) >> 16) & 0xFFFF); | |
300 | } | |
301 | ||
302 | ||
0d4ff4df JK |
303 | static u16 broadsheet_read_reg(struct broadsheetfb_par *par, u16 reg) |
304 | { | |
2afb1898 JK |
305 | broadsheet_send_cmdargs(par, BS_CMD_RD_REG, 1, ®); |
306 | par->board->wait_for_rdy(par); | |
0d4ff4df JK |
307 | return broadsheet_get_data(par); |
308 | } | |
309 | ||
b32bfc38 JK |
310 | /* functions for waveform manipulation */ |
311 | static int is_broadsheet_pll_locked(struct broadsheetfb_par *par) | |
312 | { | |
313 | return broadsheet_read_reg(par, 0x000A) & 0x0001; | |
314 | } | |
315 | ||
316 | static int broadsheet_setup_plls(struct broadsheetfb_par *par) | |
317 | { | |
318 | int retry_count = 0; | |
319 | u16 tmp; | |
320 | ||
321 | /* disable arral saemipu mode */ | |
322 | broadsheet_write_reg(par, 0x0006, 0x0000); | |
323 | ||
324 | broadsheet_write_reg(par, 0x0010, 0x0004); | |
325 | broadsheet_write_reg(par, 0x0012, 0x5949); | |
326 | broadsheet_write_reg(par, 0x0014, 0x0040); | |
327 | broadsheet_write_reg(par, 0x0016, 0x0000); | |
328 | ||
329 | do { | |
330 | if (retry_count++ > 100) | |
331 | return -ETIMEDOUT; | |
332 | mdelay(1); | |
333 | } while (!is_broadsheet_pll_locked(par)); | |
334 | ||
335 | tmp = broadsheet_read_reg(par, 0x0006); | |
336 | tmp &= ~0x1; | |
337 | broadsheet_write_reg(par, 0x0006, tmp); | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static int broadsheet_setup_spi(struct broadsheetfb_par *par) | |
343 | { | |
344 | ||
345 | broadsheet_write_reg(par, 0x0204, ((3 << 3) | 1)); | |
346 | broadsheet_write_reg(par, 0x0208, 0x0001); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static int broadsheet_setup_spiflash(struct broadsheetfb_par *par, | |
352 | u16 *orig_sfmcd) | |
353 | { | |
354 | ||
355 | *orig_sfmcd = broadsheet_read_reg(par, 0x0204); | |
356 | broadsheet_write_reg(par, 0x0208, 0); | |
357 | broadsheet_write_reg(par, 0x0204, 0); | |
358 | broadsheet_write_reg(par, 0x0204, ((3 << 3) | 1)); | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | static int broadsheet_spiflash_wait_for_bit(struct broadsheetfb_par *par, | |
364 | u16 reg, int bitnum, int val, | |
365 | int timeout) | |
366 | { | |
367 | u16 tmp; | |
368 | ||
369 | do { | |
370 | tmp = broadsheet_read_reg(par, reg); | |
371 | if (((tmp >> bitnum) & 1) == val) | |
372 | return 0; | |
373 | mdelay(1); | |
374 | } while (timeout--); | |
375 | ||
376 | return -ETIMEDOUT; | |
377 | } | |
378 | ||
379 | static int broadsheet_spiflash_write_byte(struct broadsheetfb_par *par, u8 data) | |
380 | { | |
381 | broadsheet_write_reg(par, 0x0202, (data | 0x100)); | |
382 | ||
383 | return broadsheet_spiflash_wait_for_bit(par, 0x0206, 3, 0, 100); | |
384 | } | |
385 | ||
386 | static int broadsheet_spiflash_read_byte(struct broadsheetfb_par *par, u8 *data) | |
387 | { | |
388 | int err; | |
389 | u16 tmp; | |
390 | ||
391 | broadsheet_write_reg(par, 0x0202, 0); | |
392 | ||
393 | err = broadsheet_spiflash_wait_for_bit(par, 0x0206, 3, 0, 100); | |
394 | if (err) | |
395 | return err; | |
396 | ||
397 | tmp = broadsheet_read_reg(par, 0x200); | |
398 | ||
399 | *data = tmp & 0xFF; | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | static int broadsheet_spiflash_wait_for_status(struct broadsheetfb_par *par, | |
405 | int timeout) | |
406 | { | |
407 | u8 tmp; | |
408 | int err; | |
409 | ||
410 | do { | |
411 | broadsheet_write_reg(par, 0x0208, 1); | |
412 | ||
413 | err = broadsheet_spiflash_write_byte(par, 0x05); | |
414 | if (err) | |
415 | goto failout; | |
416 | ||
417 | err = broadsheet_spiflash_read_byte(par, &tmp); | |
418 | if (err) | |
419 | goto failout; | |
420 | ||
421 | broadsheet_write_reg(par, 0x0208, 0); | |
422 | ||
423 | if (!(tmp & 0x1)) | |
424 | return 0; | |
425 | ||
426 | mdelay(5); | |
427 | } while (timeout--); | |
428 | ||
429 | dev_err(par->info->device, "Timed out waiting for spiflash status\n"); | |
430 | return -ETIMEDOUT; | |
431 | ||
432 | failout: | |
433 | broadsheet_write_reg(par, 0x0208, 0); | |
434 | return err; | |
435 | } | |
436 | ||
437 | static int broadsheet_spiflash_op_on_address(struct broadsheetfb_par *par, | |
438 | u8 op, u32 addr) | |
439 | { | |
440 | int i; | |
441 | u8 tmp; | |
442 | int err; | |
443 | ||
444 | broadsheet_write_reg(par, 0x0208, 1); | |
445 | ||
446 | err = broadsheet_spiflash_write_byte(par, op); | |
447 | if (err) | |
448 | return err; | |
449 | ||
450 | for (i = 2; i >= 0; i--) { | |
451 | tmp = ((addr >> (i * 8)) & 0xFF); | |
452 | err = broadsheet_spiflash_write_byte(par, tmp); | |
453 | if (err) | |
454 | return err; | |
455 | } | |
456 | ||
457 | return err; | |
458 | } | |
459 | ||
460 | static int broadsheet_verify_spiflash(struct broadsheetfb_par *par, | |
461 | int *flash_type) | |
462 | { | |
463 | int err = 0; | |
464 | u8 sig; | |
465 | ||
466 | err = broadsheet_spiflash_op_on_address(par, 0xAB, 0x00000000); | |
467 | if (err) | |
468 | goto failout; | |
469 | ||
470 | err = broadsheet_spiflash_read_byte(par, &sig); | |
471 | if (err) | |
472 | goto failout; | |
473 | ||
474 | if ((sig != 0x10) && (sig != 0x11)) { | |
475 | dev_err(par->info->device, "Unexpected flash type\n"); | |
476 | err = -EINVAL; | |
477 | goto failout; | |
478 | } | |
479 | ||
480 | *flash_type = sig; | |
481 | ||
482 | failout: | |
483 | broadsheet_write_reg(par, 0x0208, 0); | |
484 | return err; | |
485 | } | |
486 | ||
487 | static int broadsheet_setup_for_wfm_write(struct broadsheetfb_par *par, | |
488 | u16 *initial_sfmcd, int *flash_type) | |
489 | ||
490 | { | |
491 | int err; | |
492 | ||
493 | err = broadsheet_setup_plls(par); | |
494 | if (err) | |
495 | return err; | |
496 | ||
497 | broadsheet_write_reg(par, 0x0106, 0x0203); | |
498 | ||
499 | err = broadsheet_setup_spi(par); | |
500 | if (err) | |
501 | return err; | |
502 | ||
503 | err = broadsheet_setup_spiflash(par, initial_sfmcd); | |
504 | if (err) | |
505 | return err; | |
506 | ||
507 | return broadsheet_verify_spiflash(par, flash_type); | |
508 | } | |
509 | ||
510 | static int broadsheet_spiflash_write_control(struct broadsheetfb_par *par, | |
511 | int mode) | |
512 | { | |
513 | int err; | |
514 | ||
515 | broadsheet_write_reg(par, 0x0208, 1); | |
516 | if (mode) | |
517 | err = broadsheet_spiflash_write_byte(par, 0x06); | |
518 | else | |
519 | err = broadsheet_spiflash_write_byte(par, 0x04); | |
520 | ||
521 | broadsheet_write_reg(par, 0x0208, 0); | |
522 | return err; | |
523 | } | |
524 | ||
525 | static int broadsheet_spiflash_erase_sector(struct broadsheetfb_par *par, | |
526 | int addr) | |
527 | { | |
528 | int err; | |
529 | ||
530 | broadsheet_spiflash_write_control(par, 1); | |
531 | ||
532 | err = broadsheet_spiflash_op_on_address(par, 0xD8, addr); | |
533 | ||
534 | broadsheet_write_reg(par, 0x0208, 0); | |
535 | ||
536 | if (err) | |
537 | return err; | |
538 | ||
539 | err = broadsheet_spiflash_wait_for_status(par, 1000); | |
540 | ||
541 | return err; | |
542 | } | |
543 | ||
544 | static int broadsheet_spiflash_read_range(struct broadsheetfb_par *par, | |
545 | int addr, int size, char *data) | |
546 | { | |
547 | int err; | |
548 | int i; | |
549 | ||
550 | err = broadsheet_spiflash_op_on_address(par, 0x03, addr); | |
551 | if (err) | |
552 | goto failout; | |
553 | ||
554 | for (i = 0; i < size; i++) { | |
555 | err = broadsheet_spiflash_read_byte(par, &data[i]); | |
556 | if (err) | |
557 | goto failout; | |
558 | } | |
559 | ||
560 | failout: | |
561 | broadsheet_write_reg(par, 0x0208, 0); | |
562 | return err; | |
563 | } | |
564 | ||
565 | #define BS_SPIFLASH_PAGE_SIZE 256 | |
566 | static int broadsheet_spiflash_write_page(struct broadsheetfb_par *par, | |
567 | int addr, const char *data) | |
568 | { | |
569 | int err; | |
570 | int i; | |
571 | ||
572 | broadsheet_spiflash_write_control(par, 1); | |
573 | ||
574 | err = broadsheet_spiflash_op_on_address(par, 0x02, addr); | |
575 | if (err) | |
576 | goto failout; | |
577 | ||
578 | for (i = 0; i < BS_SPIFLASH_PAGE_SIZE; i++) { | |
579 | err = broadsheet_spiflash_write_byte(par, data[i]); | |
580 | if (err) | |
581 | goto failout; | |
582 | } | |
583 | ||
584 | broadsheet_write_reg(par, 0x0208, 0); | |
585 | ||
586 | err = broadsheet_spiflash_wait_for_status(par, 100); | |
587 | ||
588 | failout: | |
589 | return err; | |
590 | } | |
591 | ||
592 | static int broadsheet_spiflash_write_sector(struct broadsheetfb_par *par, | |
593 | int addr, const char *data, int sector_size) | |
594 | { | |
595 | int i; | |
596 | int err; | |
597 | ||
598 | for (i = 0; i < sector_size; i += BS_SPIFLASH_PAGE_SIZE) { | |
599 | err = broadsheet_spiflash_write_page(par, addr + i, &data[i]); | |
600 | if (err) | |
601 | return err; | |
602 | } | |
603 | return 0; | |
604 | } | |
605 | ||
606 | /* | |
607 | * The caller must guarantee that the data to be rewritten is entirely | |
608 | * contained within this sector. That is, data_start_addr + data_len | |
609 | * must be less than sector_start_addr + sector_size. | |
610 | */ | |
611 | static int broadsheet_spiflash_rewrite_sector(struct broadsheetfb_par *par, | |
612 | int sector_size, int data_start_addr, | |
613 | int data_len, const char *data) | |
614 | { | |
615 | int err; | |
616 | char *sector_buffer; | |
617 | int tail_start_addr; | |
618 | int start_sector_addr; | |
619 | ||
620 | sector_buffer = kzalloc(sizeof(char)*sector_size, GFP_KERNEL); | |
621 | if (!sector_buffer) | |
622 | return -ENOMEM; | |
623 | ||
624 | /* the start address of the sector is the 0th byte of that sector */ | |
625 | start_sector_addr = (data_start_addr / sector_size) * sector_size; | |
626 | ||
627 | /* | |
628 | * check if there is head data that we need to readback into our sector | |
629 | * buffer first | |
630 | */ | |
631 | if (data_start_addr != start_sector_addr) { | |
632 | /* | |
633 | * we need to read every byte up till the start address of our | |
634 | * data and we put it into our sector buffer. | |
635 | */ | |
636 | err = broadsheet_spiflash_read_range(par, start_sector_addr, | |
637 | data_start_addr, sector_buffer); | |
638 | if (err) | |
639 | return err; | |
640 | } | |
641 | ||
642 | /* now we copy our data into the right place in the sector buffer */ | |
643 | memcpy(sector_buffer + data_start_addr, data, data_len); | |
644 | ||
645 | /* | |
646 | * now we check if there is a tail section of the sector that we need to | |
647 | * readback. | |
648 | */ | |
649 | tail_start_addr = (data_start_addr + data_len) % sector_size; | |
650 | ||
651 | if (tail_start_addr) { | |
652 | int tail_len; | |
653 | ||
654 | tail_len = sector_size - tail_start_addr; | |
655 | ||
656 | /* now we read this tail into our sector buffer */ | |
657 | err = broadsheet_spiflash_read_range(par, tail_start_addr, | |
658 | tail_len, sector_buffer + tail_start_addr); | |
659 | if (err) | |
660 | return err; | |
661 | } | |
662 | ||
663 | /* if we got here we have the full sector that we want to rewrite. */ | |
664 | ||
665 | /* first erase the sector */ | |
666 | err = broadsheet_spiflash_erase_sector(par, start_sector_addr); | |
667 | if (err) | |
668 | return err; | |
669 | ||
670 | /* now write it */ | |
671 | err = broadsheet_spiflash_write_sector(par, start_sector_addr, | |
672 | sector_buffer, sector_size); | |
673 | return err; | |
674 | } | |
675 | ||
676 | static int broadsheet_write_spiflash(struct broadsheetfb_par *par, u32 wfm_addr, | |
677 | const u8 *wfm, int bytecount, int flash_type) | |
678 | { | |
679 | int sector_size; | |
680 | int err; | |
681 | int cur_addr; | |
682 | int writecount; | |
683 | int maxlen; | |
684 | int offset = 0; | |
685 | ||
686 | switch (flash_type) { | |
687 | case 0x10: | |
688 | sector_size = 32*1024; | |
689 | break; | |
690 | case 0x11: | |
691 | default: | |
692 | sector_size = 64*1024; | |
693 | break; | |
694 | } | |
695 | ||
696 | while (bytecount) { | |
697 | cur_addr = wfm_addr + offset; | |
698 | maxlen = roundup(cur_addr, sector_size) - cur_addr; | |
699 | writecount = min(bytecount, maxlen); | |
700 | ||
701 | err = broadsheet_spiflash_rewrite_sector(par, sector_size, | |
702 | cur_addr, writecount, wfm + offset); | |
703 | if (err) | |
704 | return err; | |
705 | ||
706 | offset += writecount; | |
707 | bytecount -= writecount; | |
708 | } | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | static int broadsheet_store_waveform_to_spiflash(struct broadsheetfb_par *par, | |
714 | const u8 *wfm, size_t wfm_size) | |
715 | { | |
716 | int err = 0; | |
717 | u16 initial_sfmcd = 0; | |
718 | int flash_type = 0; | |
719 | ||
720 | err = broadsheet_setup_for_wfm_write(par, &initial_sfmcd, &flash_type); | |
721 | if (err) | |
722 | goto failout; | |
723 | ||
724 | err = broadsheet_write_spiflash(par, 0x886, wfm, wfm_size, flash_type); | |
725 | ||
726 | failout: | |
727 | broadsheet_write_reg(par, 0x0204, initial_sfmcd); | |
728 | return err; | |
729 | } | |
730 | ||
731 | static ssize_t broadsheet_loadstore_waveform(struct device *dev, | |
732 | struct device_attribute *attr, | |
733 | const char *buf, size_t len) | |
734 | { | |
735 | int err; | |
736 | struct fb_info *info = dev_get_drvdata(dev); | |
737 | struct broadsheetfb_par *par = info->par; | |
738 | const struct firmware *fw_entry; | |
739 | ||
740 | if (len < 1) | |
741 | return -EINVAL; | |
742 | ||
743 | err = request_firmware(&fw_entry, "broadsheet.wbf", dev); | |
744 | if (err < 0) { | |
745 | dev_err(dev, "Failed to get broadsheet waveform\n"); | |
746 | goto err_failed; | |
747 | } | |
748 | ||
749 | /* try to enforce reasonable min max on waveform */ | |
750 | if ((fw_entry->size < 8*1024) || (fw_entry->size > 64*1024)) { | |
751 | dev_err(dev, "Invalid waveform\n"); | |
752 | err = -EINVAL; | |
753 | goto err_failed; | |
754 | } | |
755 | ||
756 | mutex_lock(&(par->io_lock)); | |
757 | err = broadsheet_store_waveform_to_spiflash(par, fw_entry->data, | |
758 | fw_entry->size); | |
759 | ||
760 | mutex_unlock(&(par->io_lock)); | |
761 | if (err < 0) { | |
762 | dev_err(dev, "Failed to store broadsheet waveform\n"); | |
763 | goto err_failed; | |
764 | } | |
765 | ||
766 | dev_info(dev, "Stored broadsheet waveform, size %zd\n", fw_entry->size); | |
767 | ||
768 | return len; | |
769 | ||
770 | err_failed: | |
771 | return err; | |
772 | } | |
773 | static DEVICE_ATTR(loadstore_waveform, S_IWUSR, NULL, | |
774 | broadsheet_loadstore_waveform); | |
775 | ||
776 | /* upper level functions that manipulate the display and other stuff */ | |
48c68c4f | 777 | static void broadsheet_init_display(struct broadsheetfb_par *par) |
0d4ff4df JK |
778 | { |
779 | u16 args[5]; | |
c1c341a0 JK |
780 | int xres = par->info->var.xres; |
781 | int yres = par->info->var.yres; | |
782 | ||
783 | args[0] = panel_table[par->panel_index].w; | |
784 | args[1] = panel_table[par->panel_index].h; | |
785 | args[2] = panel_table[par->panel_index].sdcfg; | |
786 | args[3] = panel_table[par->panel_index].gdcfg; | |
787 | args[4] = panel_table[par->panel_index].lutfmt; | |
0d4ff4df JK |
788 | broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_CFG, 5, args); |
789 | ||
790 | /* did the controller really set it? */ | |
791 | broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_CFG, 5, args); | |
792 | ||
c1c341a0 JK |
793 | args[0] = panel_table[par->panel_index].fsynclen; |
794 | args[1] = panel_table[par->panel_index].fendfbegin; | |
795 | args[2] = panel_table[par->panel_index].lsynclen; | |
796 | args[3] = panel_table[par->panel_index].lendlbegin; | |
797 | args[4] = panel_table[par->panel_index].pixclk; | |
0d4ff4df JK |
798 | broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_TMG, 5, args); |
799 | ||
c1c341a0 JK |
800 | broadsheet_write_reg32(par, 0x310, xres*yres*2); |
801 | ||
0d4ff4df JK |
802 | /* setup waveform */ |
803 | args[0] = 0x886; | |
804 | args[1] = 0; | |
805 | broadsheet_send_cmdargs(par, BS_CMD_RD_WFM_INFO, 2, args); | |
806 | ||
807 | broadsheet_send_command(par, BS_CMD_UPD_GDRV_CLR); | |
808 | ||
809 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG); | |
810 | ||
811 | broadsheet_write_reg(par, 0x330, 0x84); | |
812 | ||
813 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG); | |
814 | ||
815 | args[0] = (0x3 << 4); | |
816 | broadsheet_send_cmdargs(par, BS_CMD_LD_IMG, 1, args); | |
817 | ||
818 | args[0] = 0x154; | |
819 | broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args); | |
820 | ||
c1c341a0 JK |
821 | broadsheet_burst_write(par, (panel_table[par->panel_index].w * |
822 | panel_table[par->panel_index].h)/2, | |
823 | (u16 *) par->info->screen_base); | |
0d4ff4df JK |
824 | |
825 | broadsheet_send_command(par, BS_CMD_LD_IMG_END); | |
826 | ||
827 | args[0] = 0x4300; | |
828 | broadsheet_send_cmdargs(par, BS_CMD_UPD_FULL, 1, args); | |
829 | ||
830 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG); | |
831 | ||
832 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_FREND); | |
833 | ||
834 | par->board->wait_for_rdy(par); | |
835 | } | |
836 | ||
48c68c4f | 837 | static void broadsheet_identify(struct broadsheetfb_par *par) |
b32bfc38 JK |
838 | { |
839 | u16 rev, prc; | |
840 | struct device *dev = par->info->device; | |
841 | ||
842 | rev = broadsheet_read_reg(par, BS_REG_REV); | |
843 | prc = broadsheet_read_reg(par, BS_REG_PRC); | |
844 | dev_info(dev, "Broadsheet Rev 0x%x, Product Code 0x%x\n", rev, prc); | |
845 | ||
846 | if (prc != 0x0047) | |
847 | dev_warn(dev, "Unrecognized Broadsheet Product Code\n"); | |
848 | if (rev != 0x0100) | |
849 | dev_warn(dev, "Unrecognized Broadsheet Revision\n"); | |
850 | } | |
851 | ||
48c68c4f | 852 | static void broadsheet_init(struct broadsheetfb_par *par) |
0d4ff4df JK |
853 | { |
854 | broadsheet_send_command(par, BS_CMD_INIT_SYS_RUN); | |
855 | /* the controller needs a second */ | |
856 | msleep(1000); | |
857 | broadsheet_init_display(par); | |
858 | } | |
859 | ||
860 | static void broadsheetfb_dpy_update_pages(struct broadsheetfb_par *par, | |
861 | u16 y1, u16 y2) | |
862 | { | |
863 | u16 args[5]; | |
864 | unsigned char *buf = (unsigned char *)par->info->screen_base; | |
865 | ||
b32bfc38 | 866 | mutex_lock(&(par->io_lock)); |
0d4ff4df JK |
867 | /* y1 must be a multiple of 4 so drop the lower bits */ |
868 | y1 &= 0xFFFC; | |
869 | /* y2 must be a multiple of 4 , but - 1 so up the lower bits */ | |
870 | y2 |= 0x0003; | |
871 | ||
872 | args[0] = 0x3 << 4; | |
873 | args[1] = 0; | |
874 | args[2] = y1; | |
875 | args[3] = cpu_to_le16(par->info->var.xres); | |
876 | args[4] = y2; | |
877 | broadsheet_send_cmdargs(par, BS_CMD_LD_IMG_AREA, 5, args); | |
878 | ||
879 | args[0] = 0x154; | |
880 | broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args); | |
881 | ||
882 | buf += y1 * par->info->var.xres; | |
883 | broadsheet_burst_write(par, ((1 + y2 - y1) * par->info->var.xres)/2, | |
884 | (u16 *) buf); | |
885 | ||
886 | broadsheet_send_command(par, BS_CMD_LD_IMG_END); | |
887 | ||
888 | args[0] = 0x4300; | |
889 | broadsheet_send_cmdargs(par, BS_CMD_UPD_FULL, 1, args); | |
890 | ||
891 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG); | |
892 | ||
893 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_FREND); | |
894 | ||
895 | par->board->wait_for_rdy(par); | |
b32bfc38 | 896 | mutex_unlock(&(par->io_lock)); |
0d4ff4df JK |
897 | |
898 | } | |
899 | ||
900 | static void broadsheetfb_dpy_update(struct broadsheetfb_par *par) | |
901 | { | |
902 | u16 args[5]; | |
903 | ||
b32bfc38 | 904 | mutex_lock(&(par->io_lock)); |
0d4ff4df JK |
905 | args[0] = 0x3 << 4; |
906 | broadsheet_send_cmdargs(par, BS_CMD_LD_IMG, 1, args); | |
907 | ||
908 | args[0] = 0x154; | |
909 | broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args); | |
c1c341a0 JK |
910 | broadsheet_burst_write(par, (panel_table[par->panel_index].w * |
911 | panel_table[par->panel_index].h)/2, | |
912 | (u16 *) par->info->screen_base); | |
0d4ff4df JK |
913 | |
914 | broadsheet_send_command(par, BS_CMD_LD_IMG_END); | |
915 | ||
916 | args[0] = 0x4300; | |
917 | broadsheet_send_cmdargs(par, BS_CMD_UPD_FULL, 1, args); | |
918 | ||
919 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG); | |
920 | ||
921 | broadsheet_send_command(par, BS_CMD_WAIT_DSPE_FREND); | |
922 | ||
923 | par->board->wait_for_rdy(par); | |
b32bfc38 | 924 | mutex_unlock(&(par->io_lock)); |
0d4ff4df JK |
925 | } |
926 | ||
927 | /* this is called back from the deferred io workqueue */ | |
928 | static void broadsheetfb_dpy_deferred_io(struct fb_info *info, | |
929 | struct list_head *pagelist) | |
930 | { | |
931 | u16 y1 = 0, h = 0; | |
932 | int prev_index = -1; | |
933 | struct page *cur; | |
934 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
935 | int h_inc; | |
936 | u16 yres = info->var.yres; | |
937 | u16 xres = info->var.xres; | |
938 | ||
939 | /* height increment is fixed per page */ | |
940 | h_inc = DIV_ROUND_UP(PAGE_SIZE , xres); | |
941 | ||
942 | /* walk the written page list and swizzle the data */ | |
943 | list_for_each_entry(cur, &fbdefio->pagelist, lru) { | |
944 | if (prev_index < 0) { | |
945 | /* just starting so assign first page */ | |
946 | y1 = (cur->index << PAGE_SHIFT) / xres; | |
947 | h = h_inc; | |
948 | } else if ((prev_index + 1) == cur->index) { | |
949 | /* this page is consecutive so increase our height */ | |
950 | h += h_inc; | |
951 | } else { | |
952 | /* page not consecutive, issue previous update first */ | |
953 | broadsheetfb_dpy_update_pages(info->par, y1, y1 + h); | |
954 | /* start over with our non consecutive page */ | |
955 | y1 = (cur->index << PAGE_SHIFT) / xres; | |
956 | h = h_inc; | |
957 | } | |
958 | prev_index = cur->index; | |
959 | } | |
960 | ||
961 | /* if we still have any pages to update we do so now */ | |
962 | if (h >= yres) { | |
963 | /* its a full screen update, just do it */ | |
964 | broadsheetfb_dpy_update(info->par); | |
965 | } else { | |
966 | broadsheetfb_dpy_update_pages(info->par, y1, | |
967 | min((u16) (y1 + h), yres)); | |
968 | } | |
969 | } | |
970 | ||
971 | static void broadsheetfb_fillrect(struct fb_info *info, | |
972 | const struct fb_fillrect *rect) | |
973 | { | |
974 | struct broadsheetfb_par *par = info->par; | |
975 | ||
976 | sys_fillrect(info, rect); | |
977 | ||
978 | broadsheetfb_dpy_update(par); | |
979 | } | |
980 | ||
981 | static void broadsheetfb_copyarea(struct fb_info *info, | |
982 | const struct fb_copyarea *area) | |
983 | { | |
984 | struct broadsheetfb_par *par = info->par; | |
985 | ||
986 | sys_copyarea(info, area); | |
987 | ||
988 | broadsheetfb_dpy_update(par); | |
989 | } | |
990 | ||
991 | static void broadsheetfb_imageblit(struct fb_info *info, | |
992 | const struct fb_image *image) | |
993 | { | |
994 | struct broadsheetfb_par *par = info->par; | |
995 | ||
996 | sys_imageblit(info, image); | |
997 | ||
998 | broadsheetfb_dpy_update(par); | |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * this is the slow path from userspace. they can seek and write to | |
1003 | * the fb. it's inefficient to do anything less than a full screen draw | |
1004 | */ | |
1005 | static ssize_t broadsheetfb_write(struct fb_info *info, const char __user *buf, | |
1006 | size_t count, loff_t *ppos) | |
1007 | { | |
1008 | struct broadsheetfb_par *par = info->par; | |
1009 | unsigned long p = *ppos; | |
1010 | void *dst; | |
1011 | int err = 0; | |
1012 | unsigned long total_size; | |
1013 | ||
1014 | if (info->state != FBINFO_STATE_RUNNING) | |
1015 | return -EPERM; | |
1016 | ||
1017 | total_size = info->fix.smem_len; | |
1018 | ||
1019 | if (p > total_size) | |
1020 | return -EFBIG; | |
1021 | ||
1022 | if (count > total_size) { | |
1023 | err = -EFBIG; | |
1024 | count = total_size; | |
1025 | } | |
1026 | ||
1027 | if (count + p > total_size) { | |
1028 | if (!err) | |
1029 | err = -ENOSPC; | |
1030 | ||
1031 | count = total_size - p; | |
1032 | } | |
1033 | ||
1034 | dst = (void *)(info->screen_base + p); | |
1035 | ||
1036 | if (copy_from_user(dst, buf, count)) | |
1037 | err = -EFAULT; | |
1038 | ||
1039 | if (!err) | |
1040 | *ppos += count; | |
1041 | ||
1042 | broadsheetfb_dpy_update(par); | |
1043 | ||
1044 | return (err) ? err : count; | |
1045 | } | |
1046 | ||
1047 | static struct fb_ops broadsheetfb_ops = { | |
1048 | .owner = THIS_MODULE, | |
1049 | .fb_read = fb_sys_read, | |
1050 | .fb_write = broadsheetfb_write, | |
1051 | .fb_fillrect = broadsheetfb_fillrect, | |
1052 | .fb_copyarea = broadsheetfb_copyarea, | |
1053 | .fb_imageblit = broadsheetfb_imageblit, | |
1054 | }; | |
1055 | ||
1056 | static struct fb_deferred_io broadsheetfb_defio = { | |
1057 | .delay = HZ/4, | |
1058 | .deferred_io = broadsheetfb_dpy_deferred_io, | |
1059 | }; | |
1060 | ||
48c68c4f | 1061 | static int broadsheetfb_probe(struct platform_device *dev) |
0d4ff4df JK |
1062 | { |
1063 | struct fb_info *info; | |
1064 | struct broadsheet_board *board; | |
1065 | int retval = -ENOMEM; | |
1066 | int videomemorysize; | |
1067 | unsigned char *videomemory; | |
1068 | struct broadsheetfb_par *par; | |
1069 | int i; | |
c1c341a0 JK |
1070 | int dpyw, dpyh; |
1071 | int panel_index; | |
0d4ff4df JK |
1072 | |
1073 | /* pick up board specific routines */ | |
1074 | board = dev->dev.platform_data; | |
1075 | if (!board) | |
1076 | return -EINVAL; | |
1077 | ||
1078 | /* try to count device specific driver, if can't, platform recalls */ | |
1079 | if (!try_module_get(board->owner)) | |
1080 | return -ENODEV; | |
1081 | ||
1082 | info = framebuffer_alloc(sizeof(struct broadsheetfb_par), &dev->dev); | |
1083 | if (!info) | |
1084 | goto err; | |
1085 | ||
c1c341a0 JK |
1086 | switch (board->get_panel_type()) { |
1087 | case 37: | |
1088 | panel_index = 1; | |
1089 | break; | |
1090 | case 97: | |
1091 | panel_index = 2; | |
1092 | break; | |
1093 | case 6: | |
1094 | default: | |
1095 | panel_index = 0; | |
1096 | break; | |
1097 | } | |
1098 | ||
1099 | dpyw = panel_table[panel_index].w; | |
1100 | dpyh = panel_table[panel_index].h; | |
1101 | ||
1102 | videomemorysize = roundup((dpyw*dpyh), PAGE_SIZE); | |
1103 | ||
1b86d775 | 1104 | videomemory = vzalloc(videomemorysize); |
0d4ff4df JK |
1105 | if (!videomemory) |
1106 | goto err_fb_rel; | |
1107 | ||
0d4ff4df JK |
1108 | info->screen_base = (char *)videomemory; |
1109 | info->fbops = &broadsheetfb_ops; | |
1110 | ||
c1c341a0 JK |
1111 | broadsheetfb_var.xres = dpyw; |
1112 | broadsheetfb_var.yres = dpyh; | |
1113 | broadsheetfb_var.xres_virtual = dpyw; | |
1114 | broadsheetfb_var.yres_virtual = dpyh; | |
0d4ff4df | 1115 | info->var = broadsheetfb_var; |
c1c341a0 JK |
1116 | |
1117 | broadsheetfb_fix.line_length = dpyw; | |
0d4ff4df JK |
1118 | info->fix = broadsheetfb_fix; |
1119 | info->fix.smem_len = videomemorysize; | |
1120 | par = info->par; | |
c1c341a0 | 1121 | par->panel_index = panel_index; |
0d4ff4df JK |
1122 | par->info = info; |
1123 | par->board = board; | |
1124 | par->write_reg = broadsheet_write_reg; | |
1125 | par->read_reg = broadsheet_read_reg; | |
1126 | init_waitqueue_head(&par->waitq); | |
1127 | ||
b32bfc38 JK |
1128 | mutex_init(&par->io_lock); |
1129 | ||
a9b5ff99 | 1130 | info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB; |
0d4ff4df JK |
1131 | |
1132 | info->fbdefio = &broadsheetfb_defio; | |
1133 | fb_deferred_io_init(info); | |
1134 | ||
1135 | retval = fb_alloc_cmap(&info->cmap, 16, 0); | |
1136 | if (retval < 0) { | |
1137 | dev_err(&dev->dev, "Failed to allocate colormap\n"); | |
1138 | goto err_vfree; | |
1139 | } | |
1140 | ||
1141 | /* set cmap */ | |
1142 | for (i = 0; i < 16; i++) | |
1143 | info->cmap.red[i] = (((2*i)+1)*(0xFFFF))/32; | |
1144 | memcpy(info->cmap.green, info->cmap.red, sizeof(u16)*16); | |
1145 | memcpy(info->cmap.blue, info->cmap.red, sizeof(u16)*16); | |
1146 | ||
1147 | retval = par->board->setup_irq(info); | |
1148 | if (retval < 0) | |
1149 | goto err_cmap; | |
1150 | ||
1151 | /* this inits the dpy */ | |
1152 | retval = board->init(par); | |
1153 | if (retval < 0) | |
1154 | goto err_free_irq; | |
1155 | ||
b32bfc38 JK |
1156 | broadsheet_identify(par); |
1157 | ||
0d4ff4df JK |
1158 | broadsheet_init(par); |
1159 | ||
1160 | retval = register_framebuffer(info); | |
1161 | if (retval < 0) | |
1162 | goto err_free_irq; | |
b32bfc38 | 1163 | |
0d4ff4df JK |
1164 | platform_set_drvdata(dev, info); |
1165 | ||
b32bfc38 JK |
1166 | retval = device_create_file(&dev->dev, &dev_attr_loadstore_waveform); |
1167 | if (retval < 0) | |
1168 | goto err_unreg_fb; | |
1169 | ||
31b6780c JP |
1170 | fb_info(info, "Broadsheet frame buffer, using %dK of video memory\n", |
1171 | videomemorysize >> 10); | |
0d4ff4df JK |
1172 | |
1173 | ||
1174 | return 0; | |
1175 | ||
b32bfc38 JK |
1176 | err_unreg_fb: |
1177 | unregister_framebuffer(info); | |
0d4ff4df JK |
1178 | err_free_irq: |
1179 | board->cleanup(par); | |
1180 | err_cmap: | |
1181 | fb_dealloc_cmap(&info->cmap); | |
1182 | err_vfree: | |
1183 | vfree(videomemory); | |
1184 | err_fb_rel: | |
1185 | framebuffer_release(info); | |
1186 | err: | |
1187 | module_put(board->owner); | |
1188 | return retval; | |
1189 | ||
1190 | } | |
1191 | ||
48c68c4f | 1192 | static int broadsheetfb_remove(struct platform_device *dev) |
0d4ff4df JK |
1193 | { |
1194 | struct fb_info *info = platform_get_drvdata(dev); | |
1195 | ||
1196 | if (info) { | |
1197 | struct broadsheetfb_par *par = info->par; | |
b32bfc38 JK |
1198 | |
1199 | device_remove_file(info->dev, &dev_attr_loadstore_waveform); | |
0d4ff4df JK |
1200 | unregister_framebuffer(info); |
1201 | fb_deferred_io_cleanup(info); | |
1202 | par->board->cleanup(par); | |
1203 | fb_dealloc_cmap(&info->cmap); | |
1204 | vfree((void *)info->screen_base); | |
1205 | module_put(par->board->owner); | |
1206 | framebuffer_release(info); | |
1207 | } | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | static struct platform_driver broadsheetfb_driver = { | |
1212 | .probe = broadsheetfb_probe, | |
48c68c4f | 1213 | .remove = broadsheetfb_remove, |
0d4ff4df JK |
1214 | .driver = { |
1215 | .owner = THIS_MODULE, | |
1216 | .name = "broadsheetfb", | |
1217 | }, | |
1218 | }; | |
46fc9503 | 1219 | module_platform_driver(broadsheetfb_driver); |
0d4ff4df JK |
1220 | |
1221 | MODULE_DESCRIPTION("fbdev driver for Broadsheet controller"); | |
1222 | MODULE_AUTHOR("Jaya Kumar"); | |
1223 | MODULE_LICENSE("GPL"); |