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1 | /* |
2 | * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. |
3 | * |
4 | * Freescale DIU Frame Buffer device driver |
5 | * |
6 | * Authors: Hongjun Chen <hong-jun.chen@freescale.com> |
7 | * Paul Widmer <paul.widmer@freescale.com> |
8 | * Srikanth Srinivasan <srikanth.srinivasan@freescale.com> |
9 | * York Sun <yorksun@freescale.com> |
10 | * |
11 | * Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify it |
14 | * under the terms of the GNU General Public License as published by the |
15 | * Free Software Foundation; either version 2 of the License, or (at your |
16 | * option) any later version. |
17 | * |
18 | */ |
19 | |
20 | #include <linux/module.h> |
21 | #include <linux/kernel.h> |
22 | #include <linux/errno.h> |
23 | #include <linux/string.h> |
24 | #include <linux/slab.h> |
25 | #include <linux/fb.h> |
26 | #include <linux/init.h> |
27 | #include <linux/dma-mapping.h> |
28 | #include <linux/platform_device.h> |
29 | #include <linux/interrupt.h> |
30 | #include <linux/clk.h> |
31 | #include <linux/uaccess.h> |
32 | #include <linux/vmalloc.h> |
33 | #include <linux/spinlock.h> |
34 | |
35 | #include <sysdev/fsl_soc.h> |
36 | #include <linux/fsl-diu-fb.h> |
37 | #include "edid.h" |
38 | |
39 | #define NUM_AOIS 5 /* 1 for plane 0, 2 for planes 1 & 2 each */ |
40 | |
41 | /* HW cursor parameters */ |
42 | #define MAX_CURS 32 |
43 | |
44 | /* INT_STATUS/INT_MASK field descriptions */ |
45 | #define INT_VSYNC 0x01 /* Vsync interrupt */ |
46 | #define INT_VSYNC_WB 0x02 /* Vsync interrupt for write back operation */ |
47 | #define INT_UNDRUN 0x04 /* Under run exception interrupt */ |
48 | #define INT_PARERR 0x08 /* Display parameters error interrupt */ |
49 | #define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */ |
50 | |
51 | /* |
52 | * List of supported video modes |
53 | * |
54 | * The first entry is the default video mode. The remain entries are in |
55 | * order if increasing resolution and frequency. The 320x240-60 mode is |
56 | * the initial AOI for the second and third planes. |
57 | */ |
58 | static struct fb_videomode fsl_diu_mode_db[] = { |
59 | { |
60 | .refresh = 60, |
61 | .xres = 1024, |
62 | .yres = 768, |
63 | .pixclock = 15385, |
64 | .left_margin = 160, |
65 | .right_margin = 24, |
66 | .upper_margin = 29, |
67 | .lower_margin = 3, |
68 | .hsync_len = 136, |
69 | .vsync_len = 6, |
70 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
71 | .vmode = FB_VMODE_NONINTERLACED |
72 | }, |
73 | { |
74 | .refresh = 60, |
75 | .xres = 320, |
76 | .yres = 240, |
77 | .pixclock = 79440, |
78 | .left_margin = 16, |
79 | .right_margin = 16, |
80 | .upper_margin = 16, |
81 | .lower_margin = 5, |
82 | .hsync_len = 48, |
83 | .vsync_len = 1, |
84 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
85 | .vmode = FB_VMODE_NONINTERLACED |
86 | }, |
87 | { |
88 | .refresh = 60, |
89 | .xres = 640, |
90 | .yres = 480, |
91 | .pixclock = 39722, |
92 | .left_margin = 48, |
93 | .right_margin = 16, |
94 | .upper_margin = 33, |
95 | .lower_margin = 10, |
96 | .hsync_len = 96, |
97 | .vsync_len = 2, |
98 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
99 | .vmode = FB_VMODE_NONINTERLACED |
100 | }, |
101 | { |
102 | .refresh = 72, |
103 | .xres = 640, |
104 | .yres = 480, |
105 | .pixclock = 32052, |
106 | .left_margin = 128, |
107 | .right_margin = 24, |
108 | .upper_margin = 28, |
109 | .lower_margin = 9, |
110 | .hsync_len = 40, |
111 | .vsync_len = 3, |
112 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
113 | .vmode = FB_VMODE_NONINTERLACED |
114 | }, |
115 | { |
116 | .refresh = 75, |
117 | .xres = 640, |
118 | .yres = 480, |
119 | .pixclock = 31747, |
120 | .left_margin = 120, |
121 | .right_margin = 16, |
122 | .upper_margin = 16, |
123 | .lower_margin = 1, |
124 | .hsync_len = 64, |
125 | .vsync_len = 3, |
126 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
127 | .vmode = FB_VMODE_NONINTERLACED |
128 | }, |
129 | { |
130 | .refresh = 90, |
131 | .xres = 640, |
132 | .yres = 480, |
133 | .pixclock = 25057, |
134 | .left_margin = 120, |
135 | .right_margin = 32, |
136 | .upper_margin = 14, |
137 | .lower_margin = 25, |
138 | .hsync_len = 40, |
139 | .vsync_len = 14, |
140 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
141 | .vmode = FB_VMODE_NONINTERLACED |
142 | }, |
143 | { |
144 | .refresh = 100, |
145 | .xres = 640, |
146 | .yres = 480, |
147 | .pixclock = 22272, |
148 | .left_margin = 48, |
149 | .right_margin = 32, |
150 | .upper_margin = 17, |
151 | .lower_margin = 22, |
152 | .hsync_len = 128, |
153 | .vsync_len = 12, |
154 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
155 | .vmode = FB_VMODE_NONINTERLACED |
156 | }, |
157 | { |
158 | .refresh = 60, |
159 | .xres = 800, |
160 | .yres = 480, |
161 | .pixclock = 33805, |
162 | .left_margin = 96, |
163 | .right_margin = 24, |
164 | .upper_margin = 10, |
165 | .lower_margin = 3, |
166 | .hsync_len = 72, |
167 | .vsync_len = 7, |
168 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
169 | .vmode = FB_VMODE_NONINTERLACED |
170 | }, |
171 | { |
172 | .refresh = 60, |
173 | .xres = 800, |
174 | .yres = 600, |
175 | .pixclock = 25000, |
176 | .left_margin = 88, |
177 | .right_margin = 40, |
178 | .upper_margin = 23, |
179 | .lower_margin = 1, |
180 | .hsync_len = 128, |
181 | .vsync_len = 4, |
182 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
183 | .vmode = FB_VMODE_NONINTERLACED |
184 | }, |
185 | { |
186 | .refresh = 60, |
187 | .xres = 854, |
188 | .yres = 480, |
189 | .pixclock = 31518, |
190 | .left_margin = 104, |
191 | .right_margin = 16, |
192 | .upper_margin = 13, |
193 | .lower_margin = 1, |
194 | .hsync_len = 88, |
195 | .vsync_len = 3, |
196 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
197 | .vmode = FB_VMODE_NONINTERLACED |
198 | }, |
199 | { |
200 | .refresh = 70, |
201 | .xres = 1024, |
202 | .yres = 768, |
203 | .pixclock = 16886, |
204 | .left_margin = 3, |
205 | .right_margin = 3, |
206 | .upper_margin = 2, |
207 | .lower_margin = 2, |
208 | .hsync_len = 40, |
209 | .vsync_len = 18, |
210 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
211 | .vmode = FB_VMODE_NONINTERLACED |
212 | }, |
213 | { |
214 | .refresh = 75, |
215 | .xres = 1024, |
216 | .yres = 768, |
217 | .pixclock = 15009, |
218 | .left_margin = 3, |
219 | .right_margin = 3, |
220 | .upper_margin = 2, |
221 | .lower_margin = 2, |
222 | .hsync_len = 80, |
223 | .vsync_len = 32, |
224 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
225 | .vmode = FB_VMODE_NONINTERLACED |
226 | }, |
227 | { |
228 | .refresh = 60, |
229 | .xres = 1280, |
230 | .yres = 480, |
231 | .pixclock = 18939, |
232 | .left_margin = 353, |
233 | .right_margin = 47, |
234 | .upper_margin = 39, |
235 | .lower_margin = 4, |
236 | .hsync_len = 8, |
237 | .vsync_len = 2, |
238 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
239 | .vmode = FB_VMODE_NONINTERLACED |
240 | }, |
241 | { |
242 | .refresh = 60, |
243 | .xres = 1280, |
244 | .yres = 720, |
245 | .pixclock = 13426, |
246 | .left_margin = 192, |
247 | .right_margin = 64, |
248 | .upper_margin = 22, |
249 | .lower_margin = 1, |
250 | .hsync_len = 136, |
251 | .vsync_len = 3, |
252 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
253 | .vmode = FB_VMODE_NONINTERLACED |
254 | }, |
255 | { |
256 | .refresh = 60, |
257 | .xres = 1280, |
258 | .yres = 1024, |
259 | .pixclock = 9375, |
260 | .left_margin = 38, |
261 | .right_margin = 128, |
262 | .upper_margin = 2, |
263 | .lower_margin = 7, |
264 | .hsync_len = 216, |
265 | .vsync_len = 37, |
266 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
267 | .vmode = FB_VMODE_NONINTERLACED |
268 | }, |
269 | { |
270 | .refresh = 70, |
271 | .xres = 1280, |
272 | .yres = 1024, |
273 | .pixclock = 9380, |
274 | .left_margin = 6, |
275 | .right_margin = 6, |
276 | .upper_margin = 4, |
277 | .lower_margin = 4, |
278 | .hsync_len = 60, |
279 | .vsync_len = 94, |
280 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
281 | .vmode = FB_VMODE_NONINTERLACED |
282 | }, |
283 | { |
284 | .refresh = 75, |
285 | .xres = 1280, |
286 | .yres = 1024, |
287 | .pixclock = 9380, |
288 | .left_margin = 6, |
289 | .right_margin = 6, |
290 | .upper_margin = 4, |
291 | .lower_margin = 4, |
292 | .hsync_len = 60, |
293 | .vsync_len = 15, |
294 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
295 | .vmode = FB_VMODE_NONINTERLACED |
296 | }, |
297 | { |
298 | .refresh = 60, |
299 | .xres = 1920, |
300 | .yres = 1080, |
301 | .pixclock = 5787, |
302 | .left_margin = 328, |
303 | .right_margin = 120, |
304 | .upper_margin = 34, |
305 | .lower_margin = 1, |
306 | .hsync_len = 208, |
307 | .vsync_len = 3, |
308 | .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
309 | .vmode = FB_VMODE_NONINTERLACED |
310 | }, |
311 | }; |
312 | |
313 | static char *fb_mode; |
314 | static unsigned long default_bpp = 32; |
315 | static enum fsl_diu_monitor_port monitor_port; |
316 | static char *monitor_string; |
317 | |
318 | #if defined(CONFIG_NOT_COHERENT_CACHE) |
319 | static u8 *coherence_data; |
320 | static size_t coherence_data_size; |
321 | static unsigned int d_cache_line_size; |
322 | #endif |
323 | |
324 | static DEFINE_SPINLOCK(diu_lock); |
325 | |
326 | enum mfb_index { |
327 | PLANE0 = 0, /* Plane 0, only one AOI that fills the screen */ |
328 | PLANE1_AOI0, /* Plane 1, first AOI */ |
329 | PLANE1_AOI1, /* Plane 1, second AOI */ |
330 | PLANE2_AOI0, /* Plane 2, first AOI */ |
331 | PLANE2_AOI1, /* Plane 2, second AOI */ |
332 | }; |
333 | |
334 | struct mfb_info { |
335 | enum mfb_index index; |
336 | char *id; |
337 | int registered; |
338 | unsigned long pseudo_palette[16]; |
339 | struct diu_ad *ad; |
340 | unsigned char g_alpha; |
341 | unsigned int count; |
342 | int x_aoi_d; /* aoi display x offset to physical screen */ |
343 | int y_aoi_d; /* aoi display y offset to physical screen */ |
344 | struct fsl_diu_data *parent; |
345 | }; |
346 | |
347 | /** |
348 | * struct fsl_diu_data - per-DIU data structure |
349 | * @dma_addr: DMA address of this structure |
350 | * @fsl_diu_info: fb_info objects, one per AOI |
351 | * @dev_attr: sysfs structure |
352 | * @irq: IRQ |
353 | * @monitor_port: the monitor port this DIU is connected to |
354 | * @diu_reg: pointer to the DIU hardware registers |
355 | * @reg_lock: spinlock for register access |
356 | * @dummy_aoi: video buffer for the 4x4 32-bit dummy AOI |
357 | * dummy_ad: DIU Area Descriptor for the dummy AOI |
358 | * @ad[]: Area Descriptors for each real AOI |
359 | * @gamma: gamma color table |
360 | * @cursor: hardware cursor data |
361 | * |
362 | * This data structure must be allocated with 32-byte alignment, so that the |
363 | * internal fields can be aligned properly. |
364 | */ |
365 | struct fsl_diu_data { |
366 | dma_addr_t dma_addr; |
367 | struct fb_info fsl_diu_info[NUM_AOIS]; |
368 | struct mfb_info mfb[NUM_AOIS]; |
369 | struct device_attribute dev_attr; |
370 | unsigned int irq; |
371 | enum fsl_diu_monitor_port monitor_port; |
372 | struct diu __iomem *diu_reg; |
373 | spinlock_t reg_lock; |
374 | u8 dummy_aoi[4 * 4 * 4]; |
375 | struct diu_ad dummy_ad __aligned(8); |
376 | struct diu_ad ad[NUM_AOIS] __aligned(8); |
377 | u8 gamma[256 * 3] __aligned(32); |
378 | u8 cursor[MAX_CURS * MAX_CURS * 2] __aligned(32); |
379 | uint8_t edid_data[EDID_LENGTH]; |
380 | bool has_edid; |
381 | } __aligned(32); |
382 | |
383 | /* Determine the DMA address of a member of the fsl_diu_data structure */ |
384 | #define DMA_ADDR(p, f) ((p)->dma_addr + offsetof(struct fsl_diu_data, f)) |
385 | |
386 | static struct mfb_info mfb_template[] = { |
387 | { |
388 | .index = PLANE0, |
389 | .id = "Panel0", |
390 | .registered = 0, |
391 | .count = 0, |
392 | .x_aoi_d = 0, |
393 | .y_aoi_d = 0, |
394 | }, |
395 | { |
396 | .index = PLANE1_AOI0, |
397 | .id = "Panel1 AOI0", |
398 | .registered = 0, |
399 | .g_alpha = 0xff, |
400 | .count = 0, |
401 | .x_aoi_d = 0, |
402 | .y_aoi_d = 0, |
403 | }, |
404 | { |
405 | .index = PLANE1_AOI1, |
406 | .id = "Panel1 AOI1", |
407 | .registered = 0, |
408 | .g_alpha = 0xff, |
409 | .count = 0, |
410 | .x_aoi_d = 0, |
411 | .y_aoi_d = 480, |
412 | }, |
413 | { |
414 | .index = PLANE2_AOI0, |
415 | .id = "Panel2 AOI0", |
416 | .registered = 0, |
417 | .g_alpha = 0xff, |
418 | .count = 0, |
419 | .x_aoi_d = 640, |
420 | .y_aoi_d = 0, |
421 | }, |
422 | { |
423 | .index = PLANE2_AOI1, |
424 | .id = "Panel2 AOI1", |
425 | .registered = 0, |
426 | .g_alpha = 0xff, |
427 | .count = 0, |
428 | .x_aoi_d = 640, |
429 | .y_aoi_d = 480, |
430 | }, |
431 | }; |
432 | |
433 | #ifdef DEBUG |
434 | static void __attribute__ ((unused)) fsl_diu_dump(struct diu __iomem *hw) |
435 | { |
436 | mb(); |
437 | pr_debug("DIU: desc=%08x,%08x,%08x, gamma=%08x pallete=%08x " |
438 | "cursor=%08x curs_pos=%08x diu_mode=%08x bgnd=%08x " |
439 | "disp_size=%08x hsyn_para=%08x vsyn_para=%08x syn_pol=%08x " |
440 | "thresholds=%08x int_mask=%08x plut=%08x\n", |
441 | hw->desc[0], hw->desc[1], hw->desc[2], hw->gamma, |
442 | hw->pallete, hw->cursor, hw->curs_pos, hw->diu_mode, |
443 | hw->bgnd, hw->disp_size, hw->hsyn_para, hw->vsyn_para, |
444 | hw->syn_pol, hw->thresholds, hw->int_mask, hw->plut); |
445 | rmb(); |
446 | } |
447 | #endif |
448 | |
449 | /** |
450 | * fsl_diu_name_to_port - convert a port name to a monitor port enum |
451 | * |
452 | * Takes the name of a monitor port ("dvi", "lvds", or "dlvds") and returns |
453 | * the enum fsl_diu_monitor_port that corresponds to that string. |
454 | * |
455 | * For compatibility with older versions, a number ("0", "1", or "2") is also |
456 | * supported. |
457 | * |
458 | * If the string is unknown, DVI is assumed. |
459 | * |
460 | * If the particular port is not supported by the platform, another port |
461 | * (platform-specific) is chosen instead. |
462 | */ |
463 | static enum fsl_diu_monitor_port fsl_diu_name_to_port(const char *s) |
464 | { |
465 | enum fsl_diu_monitor_port port = FSL_DIU_PORT_DVI; |
466 | unsigned long val; |
467 | |
468 | if (s) { |
469 | if (!strict_strtoul(s, 10, &val) && (val <= 2)) |
470 | port = (enum fsl_diu_monitor_port) val; |
471 | else if (strncmp(s, "lvds", 4) == 0) |
472 | port = FSL_DIU_PORT_LVDS; |
473 | else if (strncmp(s, "dlvds", 5) == 0) |
474 | port = FSL_DIU_PORT_DLVDS; |
475 | } |
476 | |
477 | return diu_ops.valid_monitor_port(port); |
478 | } |
479 | |
480 | /* |
481 | * Workaround for failed writing desc register of planes. |
482 | * Needed with MPC5121 DIU rev 2.0 silicon. |
483 | */ |
484 | void wr_reg_wa(u32 *reg, u32 val) |
485 | { |
486 | do { |
487 | out_be32(reg, val); |
488 | } while (in_be32(reg) != val); |
489 | } |
490 | |
491 | static void fsl_diu_enable_panel(struct fb_info *info) |
492 | { |
493 | struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par; |
494 | struct diu_ad *ad = mfbi->ad; |
495 | struct fsl_diu_data *data = mfbi->parent; |
496 | struct diu __iomem *hw = data->diu_reg; |
497 | |
498 | switch (mfbi->index) { |
499 | case PLANE0: |
500 | wr_reg_wa(&hw->desc[0], ad->paddr); |
501 | break; |
502 | case PLANE1_AOI0: |
503 | cmfbi = &data->mfb[2]; |
504 | if (hw->desc[1] != ad->paddr) { /* AOI0 closed */ |
505 | if (cmfbi->count > 0) /* AOI1 open */ |
506 | ad->next_ad = |
507 | cpu_to_le32(cmfbi->ad->paddr); |
508 | else |
509 | ad->next_ad = 0; |
510 | wr_reg_wa(&hw->desc[1], ad->paddr); |
511 | } |
512 | break; |
513 | case PLANE2_AOI0: |
514 | cmfbi = &data->mfb[4]; |
515 | if (hw->desc[2] != ad->paddr) { /* AOI0 closed */ |
516 | if (cmfbi->count > 0) /* AOI1 open */ |
517 | ad->next_ad = |
518 | cpu_to_le32(cmfbi->ad->paddr); |
519 | else |
520 | ad->next_ad = 0; |
521 | wr_reg_wa(&hw->desc[2], ad->paddr); |
522 | } |
523 | break; |
524 | case PLANE1_AOI1: |
525 | pmfbi = &data->mfb[1]; |
526 | ad->next_ad = 0; |
527 | if (hw->desc[1] == data->dummy_ad.paddr) |
528 | wr_reg_wa(&hw->desc[1], ad->paddr); |
529 | else /* AOI0 open */ |
530 | pmfbi->ad->next_ad = cpu_to_le32(ad->paddr); |
531 | break; |
532 | case PLANE2_AOI1: |
533 | pmfbi = &data->mfb[3]; |
534 | ad->next_ad = 0; |
535 | if (hw->desc[2] == data->dummy_ad.paddr) |
536 | wr_reg_wa(&hw->desc[2], ad->paddr); |
537 | else /* AOI0 was open */ |
538 | pmfbi->ad->next_ad = cpu_to_le32(ad->paddr); |
539 | break; |
540 | } |
541 | } |
542 | |
543 | static void fsl_diu_disable_panel(struct fb_info *info) |
544 | { |
545 | struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par; |
546 | struct diu_ad *ad = mfbi->ad; |
547 | struct fsl_diu_data *data = mfbi->parent; |
548 | struct diu __iomem *hw = data->diu_reg; |
549 | |
550 | switch (mfbi->index) { |
551 | case PLANE0: |
552 | wr_reg_wa(&hw->desc[0], 0); |
553 | break; |
554 | case PLANE1_AOI0: |
555 | cmfbi = &data->mfb[2]; |
556 | if (cmfbi->count > 0) /* AOI1 is open */ |
557 | wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr); |
558 | /* move AOI1 to the first */ |
559 | else /* AOI1 was closed */ |
560 | wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr); |
561 | /* close AOI 0 */ |
562 | break; |
563 | case PLANE2_AOI0: |
564 | cmfbi = &data->mfb[4]; |
565 | if (cmfbi->count > 0) /* AOI1 is open */ |
566 | wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr); |
567 | /* move AOI1 to the first */ |
568 | else /* AOI1 was closed */ |
569 | wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr); |
570 | /* close AOI 0 */ |
571 | break; |
572 | case PLANE1_AOI1: |
573 | pmfbi = &data->mfb[1]; |
574 | if (hw->desc[1] != ad->paddr) { |
575 | /* AOI1 is not the first in the chain */ |
576 | if (pmfbi->count > 0) |
577 | /* AOI0 is open, must be the first */ |
578 | pmfbi->ad->next_ad = 0; |
579 | } else /* AOI1 is the first in the chain */ |
580 | wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr); |
581 | /* close AOI 1 */ |
582 | break; |
583 | case PLANE2_AOI1: |
584 | pmfbi = &data->mfb[3]; |
585 | if (hw->desc[2] != ad->paddr) { |
586 | /* AOI1 is not the first in the chain */ |
587 | if (pmfbi->count > 0) |
588 | /* AOI0 is open, must be the first */ |
589 | pmfbi->ad->next_ad = 0; |
590 | } else /* AOI1 is the first in the chain */ |
591 | wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr); |
592 | /* close AOI 1 */ |
593 | break; |
594 | } |
595 | } |
596 | |
597 | static void enable_lcdc(struct fb_info *info) |
598 | { |
599 | struct mfb_info *mfbi = info->par; |
600 | struct fsl_diu_data *data = mfbi->parent; |
601 | struct diu __iomem *hw = data->diu_reg; |
602 | |
603 | out_be32(&hw->diu_mode, MFB_MODE1); |
604 | } |
605 | |
606 | static void disable_lcdc(struct fb_info *info) |
607 | { |
608 | struct mfb_info *mfbi = info->par; |
609 | struct fsl_diu_data *data = mfbi->parent; |
610 | struct diu __iomem *hw = data->diu_reg; |
611 | |
612 | out_be32(&hw->diu_mode, 0); |
613 | } |
614 | |
615 | static void adjust_aoi_size_position(struct fb_var_screeninfo *var, |
616 | struct fb_info *info) |
617 | { |
618 | struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par; |
619 | struct fsl_diu_data *data = mfbi->parent; |
620 | int available_height, upper_aoi_bottom; |
621 | enum mfb_index index = mfbi->index; |
622 | int lower_aoi_is_open, upper_aoi_is_open; |
623 | __u32 base_plane_width, base_plane_height, upper_aoi_height; |
624 | |
625 | base_plane_width = data->fsl_diu_info[0].var.xres; |
626 | base_plane_height = data->fsl_diu_info[0].var.yres; |
627 | |
628 | if (mfbi->x_aoi_d < 0) |
629 | mfbi->x_aoi_d = 0; |
630 | if (mfbi->y_aoi_d < 0) |
631 | mfbi->y_aoi_d = 0; |
632 | switch (index) { |
633 | case PLANE0: |
634 | if (mfbi->x_aoi_d != 0) |
635 | mfbi->x_aoi_d = 0; |
636 | if (mfbi->y_aoi_d != 0) |
637 | mfbi->y_aoi_d = 0; |
638 | break; |
639 | case PLANE1_AOI0: |
640 | case PLANE2_AOI0: |
641 | lower_aoi_mfbi = data->fsl_diu_info[index+1].par; |
642 | lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0; |
643 | if (var->xres > base_plane_width) |
644 | var->xres = base_plane_width; |
645 | if ((mfbi->x_aoi_d + var->xres) > base_plane_width) |
646 | mfbi->x_aoi_d = base_plane_width - var->xres; |
647 | |
648 | if (lower_aoi_is_open) |
649 | available_height = lower_aoi_mfbi->y_aoi_d; |
650 | else |
651 | available_height = base_plane_height; |
652 | if (var->yres > available_height) |
653 | var->yres = available_height; |
654 | if ((mfbi->y_aoi_d + var->yres) > available_height) |
655 | mfbi->y_aoi_d = available_height - var->yres; |
656 | break; |
657 | case PLANE1_AOI1: |
658 | case PLANE2_AOI1: |
659 | upper_aoi_mfbi = data->fsl_diu_info[index-1].par; |
660 | upper_aoi_height = data->fsl_diu_info[index-1].var.yres; |
661 | upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height; |
662 | upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0; |
663 | if (var->xres > base_plane_width) |
664 | var->xres = base_plane_width; |
665 | if ((mfbi->x_aoi_d + var->xres) > base_plane_width) |
666 | mfbi->x_aoi_d = base_plane_width - var->xres; |
667 | if (mfbi->y_aoi_d < 0) |
668 | mfbi->y_aoi_d = 0; |
669 | if (upper_aoi_is_open) { |
670 | if (mfbi->y_aoi_d < upper_aoi_bottom) |
671 | mfbi->y_aoi_d = upper_aoi_bottom; |
672 | available_height = base_plane_height |
673 | - upper_aoi_bottom; |
674 | } else |
675 | available_height = base_plane_height; |
676 | if (var->yres > available_height) |
677 | var->yres = available_height; |
678 | if ((mfbi->y_aoi_d + var->yres) > base_plane_height) |
679 | mfbi->y_aoi_d = base_plane_height - var->yres; |
680 | break; |
681 | } |
682 | } |
683 | /* |
684 | * Checks to see if the hardware supports the state requested by var passed |
685 | * in. This function does not alter the hardware state! If the var passed in |
686 | * is slightly off by what the hardware can support then we alter the var |
687 | * PASSED in to what we can do. If the hardware doesn't support mode change |
688 | * a -EINVAL will be returned by the upper layers. |
689 | */ |
690 | static int fsl_diu_check_var(struct fb_var_screeninfo *var, |
691 | struct fb_info *info) |
692 | { |
693 | if (var->xres_virtual < var->xres) |
694 | var->xres_virtual = var->xres; |
695 | if (var->yres_virtual < var->yres) |
696 | var->yres_virtual = var->yres; |
697 | |
698 | if (var->xoffset < 0) |
699 | var->xoffset = 0; |
700 | |
701 | if (var->yoffset < 0) |
702 | var->yoffset = 0; |
703 | |
704 | if (var->xoffset + info->var.xres > info->var.xres_virtual) |
705 | var->xoffset = info->var.xres_virtual - info->var.xres; |
706 | |
707 | if (var->yoffset + info->var.yres > info->var.yres_virtual) |
708 | var->yoffset = info->var.yres_virtual - info->var.yres; |
709 | |
710 | if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) && |
711 | (var->bits_per_pixel != 16)) |
712 | var->bits_per_pixel = default_bpp; |
713 | |
714 | switch (var->bits_per_pixel) { |
715 | case 16: |
716 | var->red.length = 5; |
717 | var->red.offset = 11; |
718 | var->red.msb_right = 0; |
719 | |
720 | var->green.length = 6; |
721 | var->green.offset = 5; |
722 | var->green.msb_right = 0; |
723 | |
724 | var->blue.length = 5; |
725 | var->blue.offset = 0; |
726 | var->blue.msb_right = 0; |
727 | |
728 | var->transp.length = 0; |
729 | var->transp.offset = 0; |
730 | var->transp.msb_right = 0; |
731 | break; |
732 | case 24: |
733 | var->red.length = 8; |
734 | var->red.offset = 0; |
735 | var->red.msb_right = 0; |
736 | |
737 | var->green.length = 8; |
738 | var->green.offset = 8; |
739 | var->green.msb_right = 0; |
740 | |
741 | var->blue.length = 8; |
742 | var->blue.offset = 16; |
743 | var->blue.msb_right = 0; |
744 | |
745 | var->transp.length = 0; |
746 | var->transp.offset = 0; |
747 | var->transp.msb_right = 0; |
748 | break; |
749 | case 32: |
750 | var->red.length = 8; |
751 | var->red.offset = 16; |
752 | var->red.msb_right = 0; |
753 | |
754 | var->green.length = 8; |
755 | var->green.offset = 8; |
756 | var->green.msb_right = 0; |
757 | |
758 | var->blue.length = 8; |
759 | var->blue.offset = 0; |
760 | var->blue.msb_right = 0; |
761 | |
762 | var->transp.length = 8; |
763 | var->transp.offset = 24; |
764 | var->transp.msb_right = 0; |
765 | |
766 | break; |
767 | } |
768 | |
769 | var->height = -1; |
770 | var->width = -1; |
771 | var->grayscale = 0; |
772 | |
773 | /* Copy nonstd field to/from sync for fbset usage */ |
774 | var->sync |= var->nonstd; |
775 | var->nonstd |= var->sync; |
776 | |
777 | adjust_aoi_size_position(var, info); |
778 | return 0; |
779 | } |
780 | |
781 | static void set_fix(struct fb_info *info) |
782 | { |
783 | struct fb_fix_screeninfo *fix = &info->fix; |
784 | struct fb_var_screeninfo *var = &info->var; |
785 | struct mfb_info *mfbi = info->par; |
786 | |
787 | strncpy(fix->id, mfbi->id, sizeof(fix->id)); |
788 | fix->line_length = var->xres_virtual * var->bits_per_pixel / 8; |
789 | fix->type = FB_TYPE_PACKED_PIXELS; |
790 | fix->accel = FB_ACCEL_NONE; |
791 | fix->visual = FB_VISUAL_TRUECOLOR; |
792 | fix->xpanstep = 1; |
793 | fix->ypanstep = 1; |
794 | } |
795 | |
796 | static void update_lcdc(struct fb_info *info) |
797 | { |
798 | struct fb_var_screeninfo *var = &info->var; |
799 | struct mfb_info *mfbi = info->par; |
800 | struct fsl_diu_data *data = mfbi->parent; |
801 | struct diu __iomem *hw; |
802 | int i, j; |
803 | u8 *gamma_table_base; |
804 | |
805 | u32 temp; |
806 | |
807 | hw = data->diu_reg; |
808 | |
809 | if (diu_ops.set_monitor_port) |
810 | diu_ops.set_monitor_port(data->monitor_port); |
811 | gamma_table_base = data->gamma; |
812 | |
813 | /* Prep for DIU init - gamma table, cursor table */ |
814 | |
815 | for (i = 0; i <= 2; i++) |
816 | for (j = 0; j <= 255; j++) |
817 | *gamma_table_base++ = j; |
818 | |
819 | if (diu_ops.set_gamma_table) |
820 | diu_ops.set_gamma_table(data->monitor_port, data->gamma); |
821 | |
822 | disable_lcdc(info); |
823 | |
824 | /* Program DIU registers */ |
825 | |
826 | out_be32(&hw->gamma, DMA_ADDR(data, gamma)); |
827 | out_be32(&hw->cursor, DMA_ADDR(data, cursor)); |
828 | |
829 | out_be32(&hw->bgnd, 0x007F7F7F); /* Set background to grey */ |
830 | out_be32(&hw->disp_size, (var->yres << 16) | var->xres); |
831 | |
832 | /* Horizontal and vertical configuration register */ |
833 | temp = var->left_margin << 22 | /* BP_H */ |
834 | var->hsync_len << 11 | /* PW_H */ |
835 | var->right_margin; /* FP_H */ |
836 | |
837 | out_be32(&hw->hsyn_para, temp); |
838 | |
839 | temp = var->upper_margin << 22 | /* BP_V */ |
840 | var->vsync_len << 11 | /* PW_V */ |
841 | var->lower_margin; /* FP_V */ |
842 | |
843 | out_be32(&hw->vsyn_para, temp); |
844 | |
845 | diu_ops.set_pixel_clock(var->pixclock); |
846 | |
847 | #ifndef CONFIG_PPC_MPC512x |
848 | /* |
849 | * The PLUT register is defined differently on the MPC5121 than it |
850 | * is on other SOCs. Unfortunately, there's no documentation that |
851 | * explains how it's supposed to be programmed, so for now, we leave |
852 | * it at the default value on the MPC5121. |
853 | * |
854 | * For other SOCs, program it for the highest priority, which will |
855 | * reduce the chance of underrun. Technically, we should scale the |
856 | * priority to match the screen resolution, but doing that properly |
857 | * requires delicate fine-tuning for each use-case. |
858 | */ |
859 | out_be32(&hw->plut, 0x01F5F666); |
860 | #endif |
861 | |
862 | /* Enable the DIU */ |
863 | enable_lcdc(info); |
864 | } |
865 | |
866 | static int map_video_memory(struct fb_info *info) |
867 | { |
868 | u32 smem_len = info->fix.line_length * info->var.yres_virtual; |
869 | void *p; |
870 | |
871 | p = alloc_pages_exact(smem_len, GFP_DMA | __GFP_ZERO); |
872 | if (!p) { |
873 | dev_err(info->dev, "unable to allocate fb memory\n"); |
874 | return -ENOMEM; |
875 | } |
876 | mutex_lock(&info->mm_lock); |
877 | info->screen_base = p; |
878 | info->fix.smem_start = virt_to_phys(info->screen_base); |
879 | info->fix.smem_len = smem_len; |
880 | mutex_unlock(&info->mm_lock); |
881 | info->screen_size = info->fix.smem_len; |
882 | |
883 | return 0; |
884 | } |
885 | |
886 | static void unmap_video_memory(struct fb_info *info) |
887 | { |
888 | void *p = info->screen_base; |
889 | size_t l = info->fix.smem_len; |
890 | |
891 | mutex_lock(&info->mm_lock); |
892 | info->screen_base = NULL; |
893 | info->fix.smem_start = 0; |
894 | info->fix.smem_len = 0; |
895 | mutex_unlock(&info->mm_lock); |
896 | |
897 | if (p) |
898 | free_pages_exact(p, l); |
899 | } |
900 | |
901 | /* |
902 | * Using the fb_var_screeninfo in fb_info we set the aoi of this |
903 | * particular framebuffer. It is a light version of fsl_diu_set_par. |
904 | */ |
905 | static int fsl_diu_set_aoi(struct fb_info *info) |
906 | { |
907 | struct fb_var_screeninfo *var = &info->var; |
908 | struct mfb_info *mfbi = info->par; |
909 | struct diu_ad *ad = mfbi->ad; |
910 | |
911 | /* AOI should not be greater than display size */ |
912 | ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset); |
913 | ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d); |
914 | return 0; |
915 | } |
916 | |
917 | /** |
918 | * fsl_diu_get_pixel_format: return the pixel format for a given color depth |
919 | * |
920 | * The pixel format is a 32-bit value that determine which bits in each |
921 | * pixel are to be used for each color. This is the default function used |
922 | * if the platform does not define its own version. |
923 | */ |
924 | static u32 fsl_diu_get_pixel_format(unsigned int bits_per_pixel) |
925 | { |
926 | #define PF_BYTE_F 0x10000000 |
927 | #define PF_ALPHA_C_MASK 0x0E000000 |
928 | #define PF_ALPHA_C_SHIFT 25 |
929 | #define PF_BLUE_C_MASK 0x01800000 |
930 | #define PF_BLUE_C_SHIFT 23 |
931 | #define PF_GREEN_C_MASK 0x00600000 |
932 | #define PF_GREEN_C_SHIFT 21 |
933 | #define PF_RED_C_MASK 0x00180000 |
934 | #define PF_RED_C_SHIFT 19 |
935 | #define PF_PALETTE 0x00040000 |
936 | #define PF_PIXEL_S_MASK 0x00030000 |
937 | #define PF_PIXEL_S_SHIFT 16 |
938 | #define PF_COMP_3_MASK 0x0000F000 |
939 | #define PF_COMP_3_SHIFT 12 |
940 | #define PF_COMP_2_MASK 0x00000F00 |
941 | #define PF_COMP_2_SHIFT 8 |
942 | #define PF_COMP_1_MASK 0x000000F0 |
943 | #define PF_COMP_1_SHIFT 4 |
944 | #define PF_COMP_0_MASK 0x0000000F |
945 | #define PF_COMP_0_SHIFT 0 |
946 | |
947 | #define MAKE_PF(alpha, red, green, blue, size, c0, c1, c2, c3) \ |
948 | cpu_to_le32(PF_BYTE_F | (alpha << PF_ALPHA_C_SHIFT) | \ |
949 | (blue << PF_BLUE_C_SHIFT) | (green << PF_GREEN_C_SHIFT) | \ |
950 | (red << PF_RED_C_SHIFT) | (c3 << PF_COMP_3_SHIFT) | \ |
951 | (c2 << PF_COMP_2_SHIFT) | (c1 << PF_COMP_1_SHIFT) | \ |
952 | (c0 << PF_COMP_0_SHIFT) | (size << PF_PIXEL_S_SHIFT)) |
953 | |
954 | switch (bits_per_pixel) { |
955 | case 32: |
956 | /* 0x88883316 */ |
957 | return MAKE_PF(3, 2, 1, 0, 3, 8, 8, 8, 8); |
958 | case 24: |
959 | /* 0x88082219 */ |
960 | return MAKE_PF(4, 0, 1, 2, 2, 8, 8, 8, 0); |
961 | case 16: |
962 | /* 0x65053118 */ |
963 | return MAKE_PF(4, 2, 1, 0, 1, 5, 6, 5, 0); |
964 | default: |
965 | pr_err("fsl-diu: unsupported color depth %u\n", bits_per_pixel); |
966 | return 0; |
967 | } |
968 | } |
969 | |
970 | /* |
971 | * Using the fb_var_screeninfo in fb_info we set the resolution of this |
972 | * particular framebuffer. This function alters the fb_fix_screeninfo stored |
973 | * in fb_info. It does not alter var in fb_info since we are using that |
974 | * data. This means we depend on the data in var inside fb_info to be |
975 | * supported by the hardware. fsl_diu_check_var is always called before |
976 | * fsl_diu_set_par to ensure this. |
977 | */ |
978 | static int fsl_diu_set_par(struct fb_info *info) |
979 | { |
980 | unsigned long len; |
981 | struct fb_var_screeninfo *var = &info->var; |
982 | struct mfb_info *mfbi = info->par; |
983 | struct fsl_diu_data *data = mfbi->parent; |
984 | struct diu_ad *ad = mfbi->ad; |
985 | struct diu __iomem *hw; |
986 | |
987 | hw = data->diu_reg; |
988 | |
989 | set_fix(info); |
990 | |
991 | len = info->var.yres_virtual * info->fix.line_length; |
992 | /* Alloc & dealloc each time resolution/bpp change */ |
993 | if (len != info->fix.smem_len) { |
994 | if (info->fix.smem_start) |
995 | unmap_video_memory(info); |
996 | |
997 | /* Memory allocation for framebuffer */ |
998 | if (map_video_memory(info)) { |
999 | dev_err(info->dev, "unable to allocate fb memory 1\n"); |
1000 | return -ENOMEM; |
1001 | } |
1002 | } |
1003 | |
1004 | if (diu_ops.get_pixel_format) |
1005 | ad->pix_fmt = diu_ops.get_pixel_format(data->monitor_port, |
1006 | var->bits_per_pixel); |
1007 | else |
1008 | ad->pix_fmt = fsl_diu_get_pixel_format(var->bits_per_pixel); |
1009 | |
1010 | ad->addr = cpu_to_le32(info->fix.smem_start); |
1011 | ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) | |
1012 | var->xres_virtual) | mfbi->g_alpha; |
1013 | /* AOI should not be greater than display size */ |
1014 | ad->aoi_size = cpu_to_le32((var->yres << 16) | var->xres); |
1015 | ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset); |
1016 | ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d); |
1017 | |
1018 | /* Disable chroma keying function */ |
1019 | ad->ckmax_r = 0; |
1020 | ad->ckmax_g = 0; |
1021 | ad->ckmax_b = 0; |
1022 | |
1023 | ad->ckmin_r = 255; |
1024 | ad->ckmin_g = 255; |
1025 | ad->ckmin_b = 255; |
1026 | |
1027 | if (mfbi->index == PLANE0) |
1028 | update_lcdc(info); |
1029 | return 0; |
1030 | } |
1031 | |
1032 | static inline __u32 CNVT_TOHW(__u32 val, __u32 width) |
1033 | { |
1034 | return ((val << width) + 0x7FFF - val) >> 16; |
1035 | } |
1036 | |
1037 | /* |
1038 | * Set a single color register. The values supplied have a 16 bit magnitude |
1039 | * which needs to be scaled in this function for the hardware. Things to take |
1040 | * into consideration are how many color registers, if any, are supported with |
1041 | * the current color visual. With truecolor mode no color palettes are |
1042 | * supported. Here a pseudo palette is created which we store the value in |
1043 | * pseudo_palette in struct fb_info. For pseudocolor mode we have a limited |
1044 | * color palette. |
1045 | */ |
1046 | static int fsl_diu_setcolreg(unsigned int regno, unsigned int red, |
1047 | unsigned int green, unsigned int blue, |
1048 | unsigned int transp, struct fb_info *info) |
1049 | { |
1050 | int ret = 1; |
1051 | |
1052 | /* |
1053 | * If greyscale is true, then we convert the RGB value |
1054 | * to greyscale no matter what visual we are using. |
1055 | */ |
1056 | if (info->var.grayscale) |
1057 | red = green = blue = (19595 * red + 38470 * green + |
1058 | 7471 * blue) >> 16; |
1059 | switch (info->fix.visual) { |
1060 | case FB_VISUAL_TRUECOLOR: |
1061 | /* |
1062 | * 16-bit True Colour. We encode the RGB value |
1063 | * according to the RGB bitfield information. |
1064 | */ |
1065 | if (regno < 16) { |
1066 | u32 *pal = info->pseudo_palette; |
1067 | u32 v; |
1068 | |
1069 | red = CNVT_TOHW(red, info->var.red.length); |
1070 | green = CNVT_TOHW(green, info->var.green.length); |
1071 | blue = CNVT_TOHW(blue, info->var.blue.length); |
1072 | transp = CNVT_TOHW(transp, info->var.transp.length); |
1073 | |
1074 | v = (red << info->var.red.offset) | |
1075 | (green << info->var.green.offset) | |
1076 | (blue << info->var.blue.offset) | |
1077 | (transp << info->var.transp.offset); |
1078 | |
1079 | pal[regno] = v; |
1080 | ret = 0; |
1081 | } |
1082 | break; |
1083 | } |
1084 | |
1085 | return ret; |
1086 | } |
1087 | |
1088 | /* |
1089 | * Pan (or wrap, depending on the `vmode' field) the display using the |
1090 | * 'xoffset' and 'yoffset' fields of the 'var' structure. If the values |
1091 | * don't fit, return -EINVAL. |
1092 | */ |
1093 | static int fsl_diu_pan_display(struct fb_var_screeninfo *var, |
1094 | struct fb_info *info) |
1095 | { |
1096 | if ((info->var.xoffset == var->xoffset) && |
1097 | (info->var.yoffset == var->yoffset)) |
1098 | return 0; /* No change, do nothing */ |
1099 | |
1100 | if (var->xoffset < 0 || var->yoffset < 0 |
1101 | || var->xoffset + info->var.xres > info->var.xres_virtual |
1102 | || var->yoffset + info->var.yres > info->var.yres_virtual) |
1103 | return -EINVAL; |
1104 | |
1105 | info->var.xoffset = var->xoffset; |
1106 | info->var.yoffset = var->yoffset; |
1107 | |
1108 | if (var->vmode & FB_VMODE_YWRAP) |
1109 | info->var.vmode |= FB_VMODE_YWRAP; |
1110 | else |
1111 | info->var.vmode &= ~FB_VMODE_YWRAP; |
1112 | |
1113 | fsl_diu_set_aoi(info); |
1114 | |
1115 | return 0; |
1116 | } |
1117 | |
1118 | static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd, |
1119 | unsigned long arg) |
1120 | { |
1121 | struct mfb_info *mfbi = info->par; |
1122 | struct diu_ad *ad = mfbi->ad; |
1123 | struct mfb_chroma_key ck; |
1124 | unsigned char global_alpha; |
1125 | struct aoi_display_offset aoi_d; |
1126 | __u32 pix_fmt; |
1127 | void __user *buf = (void __user *)arg; |
1128 | |
1129 | if (!arg) |
1130 | return -EINVAL; |
1131 | |
1132 | dev_dbg(info->dev, "ioctl %08x (dir=%s%s type=%u nr=%u size=%u)\n", cmd, |
1133 | _IOC_DIR(cmd) & _IOC_READ ? "R" : "", |
1134 | _IOC_DIR(cmd) & _IOC_WRITE ? "W" : "", |
1135 | _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd)); |
1136 | |
1137 | switch (cmd) { |
1138 | case MFB_SET_PIXFMT_OLD: |
1139 | dev_warn(info->dev, |
1140 | "MFB_SET_PIXFMT value of 0x%08x is deprecated.\n", |
1141 | MFB_SET_PIXFMT_OLD); |
1142 | case MFB_SET_PIXFMT: |
1143 | if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt))) |
1144 | return -EFAULT; |
1145 | ad->pix_fmt = pix_fmt; |
1146 | break; |
1147 | case MFB_GET_PIXFMT_OLD: |
1148 | dev_warn(info->dev, |
1149 | "MFB_GET_PIXFMT value of 0x%08x is deprecated.\n", |
1150 | MFB_GET_PIXFMT_OLD); |
1151 | case MFB_GET_PIXFMT: |
1152 | pix_fmt = ad->pix_fmt; |
1153 | if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt))) |
1154 | return -EFAULT; |
1155 | break; |
1156 | case MFB_SET_AOID: |
1157 | if (copy_from_user(&aoi_d, buf, sizeof(aoi_d))) |
1158 | return -EFAULT; |
1159 | mfbi->x_aoi_d = aoi_d.x_aoi_d; |
1160 | mfbi->y_aoi_d = aoi_d.y_aoi_d; |
1161 | fsl_diu_check_var(&info->var, info); |
1162 | fsl_diu_set_aoi(info); |
1163 | break; |
1164 | case MFB_GET_AOID: |
1165 | aoi_d.x_aoi_d = mfbi->x_aoi_d; |
1166 | aoi_d.y_aoi_d = mfbi->y_aoi_d; |
1167 | if (copy_to_user(buf, &aoi_d, sizeof(aoi_d))) |
1168 | return -EFAULT; |
1169 | break; |
1170 | case MFB_GET_ALPHA: |
1171 | global_alpha = mfbi->g_alpha; |
1172 | if (copy_to_user(buf, &global_alpha, sizeof(global_alpha))) |
1173 | return -EFAULT; |
1174 | break; |
1175 | case MFB_SET_ALPHA: |
1176 | /* set panel information */ |
1177 | if (copy_from_user(&global_alpha, buf, sizeof(global_alpha))) |
1178 | return -EFAULT; |
1179 | ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) | |
1180 | (global_alpha & 0xff); |
1181 | mfbi->g_alpha = global_alpha; |
1182 | break; |
1183 | case MFB_SET_CHROMA_KEY: |
1184 | /* set panel winformation */ |
1185 | if (copy_from_user(&ck, buf, sizeof(ck))) |
1186 | return -EFAULT; |
1187 | |
1188 | if (ck.enable && |
1189 | (ck.red_max < ck.red_min || |
1190 | ck.green_max < ck.green_min || |
1191 | ck.blue_max < ck.blue_min)) |
1192 | return -EINVAL; |
1193 | |
1194 | if (!ck.enable) { |
1195 | ad->ckmax_r = 0; |
1196 | ad->ckmax_g = 0; |
1197 | ad->ckmax_b = 0; |
1198 | ad->ckmin_r = 255; |
1199 | ad->ckmin_g = 255; |
1200 | ad->ckmin_b = 255; |
1201 | } else { |
1202 | ad->ckmax_r = ck.red_max; |
1203 | ad->ckmax_g = ck.green_max; |
1204 | ad->ckmax_b = ck.blue_max; |
1205 | ad->ckmin_r = ck.red_min; |
1206 | ad->ckmin_g = ck.green_min; |
1207 | ad->ckmin_b = ck.blue_min; |
1208 | } |
1209 | break; |
1210 | #ifdef CONFIG_PPC_MPC512x |
1211 | case MFB_SET_GAMMA: { |
1212 | struct fsl_diu_data *data = mfbi->parent; |
1213 | |
1214 | if (copy_from_user(data->gamma, buf, sizeof(data->gamma))) |
1215 | return -EFAULT; |
1216 | setbits32(&data->diu_reg->gamma, 0); /* Force table reload */ |
1217 | break; |
1218 | } |
1219 | case MFB_GET_GAMMA: { |
1220 | struct fsl_diu_data *data = mfbi->parent; |
1221 | |
1222 | if (copy_to_user(buf, data->gamma, sizeof(data->gamma))) |
1223 | return -EFAULT; |
1224 | break; |
1225 | } |
1226 | #endif |
1227 | default: |
1228 | dev_err(info->dev, "unknown ioctl command (0x%08X)\n", cmd); |
1229 | return -ENOIOCTLCMD; |
1230 | } |
1231 | |
1232 | return 0; |
1233 | } |
1234 | |
1235 | static inline void fsl_diu_enable_interrupts(struct fsl_diu_data *data) |
1236 | { |
1237 | u32 int_mask = INT_UNDRUN; /* enable underrun detection */ |
1238 | |
1239 | if (IS_ENABLED(CONFIG_NOT_COHERENT_CACHE)) |
1240 | int_mask |= INT_VSYNC; /* enable vertical sync */ |
1241 | |
1242 | clrbits32(&data->diu_reg->int_mask, int_mask); |
1243 | } |
1244 | |
1245 | /* turn on fb if count == 1 |
1246 | */ |
1247 | static int fsl_diu_open(struct fb_info *info, int user) |
1248 | { |
1249 | struct mfb_info *mfbi = info->par; |
1250 | int res = 0; |
1251 | |
1252 | /* free boot splash memory on first /dev/fb0 open */ |
1253 | if ((mfbi->index == PLANE0) && diu_ops.release_bootmem) |
1254 | diu_ops.release_bootmem(); |
1255 | |
1256 | spin_lock(&diu_lock); |
1257 | mfbi->count++; |
1258 | if (mfbi->count == 1) { |
1259 | fsl_diu_check_var(&info->var, info); |
1260 | res = fsl_diu_set_par(info); |
1261 | if (res < 0) |
1262 | mfbi->count--; |
1263 | else { |
1264 | fsl_diu_enable_interrupts(mfbi->parent); |
1265 | fsl_diu_enable_panel(info); |
1266 | } |
1267 | } |
1268 | |
1269 | spin_unlock(&diu_lock); |
1270 | return res; |
1271 | } |
1272 | |
1273 | /* turn off fb if count == 0 |
1274 | */ |
1275 | static int fsl_diu_release(struct fb_info *info, int user) |
1276 | { |
1277 | struct mfb_info *mfbi = info->par; |
1278 | int res = 0; |
1279 | |
1280 | spin_lock(&diu_lock); |
1281 | mfbi->count--; |
1282 | if (mfbi->count == 0) { |
1283 | struct fsl_diu_data *data = mfbi->parent; |
1284 | bool disable = true; |
1285 | int i; |
1286 | |
1287 | /* Disable interrupts only if all AOIs are closed */ |
1288 | for (i = 0; i < NUM_AOIS; i++) { |
1289 | struct mfb_info *mi = data->fsl_diu_info[i].par; |
1290 | |
1291 | if (mi->count) |
1292 | disable = false; |
1293 | } |
1294 | if (disable) |
1295 | out_be32(&data->diu_reg->int_mask, 0xffffffff); |
1296 | fsl_diu_disable_panel(info); |
1297 | } |
1298 | |
1299 | spin_unlock(&diu_lock); |
1300 | return res; |
1301 | } |
1302 | |
1303 | static struct fb_ops fsl_diu_ops = { |
1304 | .owner = THIS_MODULE, |
1305 | .fb_check_var = fsl_diu_check_var, |
1306 | .fb_set_par = fsl_diu_set_par, |
1307 | .fb_setcolreg = fsl_diu_setcolreg, |
1308 | .fb_pan_display = fsl_diu_pan_display, |
1309 | .fb_fillrect = cfb_fillrect, |
1310 | .fb_copyarea = cfb_copyarea, |
1311 | .fb_imageblit = cfb_imageblit, |
1312 | .fb_ioctl = fsl_diu_ioctl, |
1313 | .fb_open = fsl_diu_open, |
1314 | .fb_release = fsl_diu_release, |
1315 | }; |
1316 | |
1317 | static int install_fb(struct fb_info *info) |
1318 | { |
1319 | int rc; |
1320 | struct mfb_info *mfbi = info->par; |
1321 | struct fsl_diu_data *data = mfbi->parent; |
1322 | const char *aoi_mode, *init_aoi_mode = "320x240"; |
1323 | struct fb_videomode *db = fsl_diu_mode_db; |
1324 | unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db); |
1325 | int has_default_mode = 1; |
1326 | |
1327 | info->var.activate = FB_ACTIVATE_NOW; |
1328 | info->fbops = &fsl_diu_ops; |
1329 | info->flags = FBINFO_DEFAULT | FBINFO_VIRTFB | FBINFO_PARTIAL_PAN_OK | |
1330 | FBINFO_READS_FAST; |
1331 | info->pseudo_palette = mfbi->pseudo_palette; |
1332 | |
1333 | rc = fb_alloc_cmap(&info->cmap, 16, 0); |
1334 | if (rc) |
1335 | return rc; |
1336 | |
1337 | if (mfbi->index == PLANE0) { |
1338 | if (data->has_edid) { |
1339 | /* Now build modedb from EDID */ |
1340 | fb_edid_to_monspecs(data->edid_data, &info->monspecs); |
1341 | fb_videomode_to_modelist(info->monspecs.modedb, |
1342 | info->monspecs.modedb_len, |
1343 | &info->modelist); |
1344 | db = info->monspecs.modedb; |
1345 | dbsize = info->monspecs.modedb_len; |
1346 | } |
1347 | aoi_mode = fb_mode; |
1348 | } else { |
1349 | aoi_mode = init_aoi_mode; |
1350 | } |
1351 | rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize, NULL, |
1352 | default_bpp); |
1353 | if (!rc) { |
1354 | /* |
1355 | * For plane 0 we continue and look into |
1356 | * driver's internal modedb. |
1357 | */ |
1358 | if ((mfbi->index == PLANE0) && data->has_edid) |
1359 | has_default_mode = 0; |
1360 | else |
1361 | return -EINVAL; |
1362 | } |
1363 | |
1364 | if (!has_default_mode) { |
1365 | rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db, |
1366 | ARRAY_SIZE(fsl_diu_mode_db), NULL, default_bpp); |
1367 | if (rc) |
1368 | has_default_mode = 1; |
1369 | } |
1370 | |
1371 | /* Still not found, use preferred mode from database if any */ |
1372 | if (!has_default_mode && info->monspecs.modedb) { |
1373 | struct fb_monspecs *specs = &info->monspecs; |
1374 | struct fb_videomode *modedb = &specs->modedb[0]; |
1375 | |
1376 | /* |
1377 | * Get preferred timing. If not found, |
1378 | * first mode in database will be used. |
1379 | */ |
1380 | if (specs->misc & FB_MISC_1ST_DETAIL) { |
1381 | int i; |
1382 | |
1383 | for (i = 0; i < specs->modedb_len; i++) { |
1384 | if (specs->modedb[i].flag & FB_MODE_IS_FIRST) { |
1385 | modedb = &specs->modedb[i]; |
1386 | break; |
1387 | } |
1388 | } |
1389 | } |
1390 | |
1391 | info->var.bits_per_pixel = default_bpp; |
1392 | fb_videomode_to_var(&info->var, modedb); |
1393 | } |
1394 | |
1395 | if (fsl_diu_check_var(&info->var, info)) { |
1396 | dev_err(info->dev, "fsl_diu_check_var failed\n"); |
1397 | unmap_video_memory(info); |
1398 | fb_dealloc_cmap(&info->cmap); |
1399 | return -EINVAL; |
1400 | } |
1401 | |
1402 | if (register_framebuffer(info) < 0) { |
1403 | dev_err(info->dev, "register_framebuffer failed\n"); |
1404 | unmap_video_memory(info); |
1405 | fb_dealloc_cmap(&info->cmap); |
1406 | return -EINVAL; |
1407 | } |
1408 | |
1409 | mfbi->registered = 1; |
1410 | dev_info(info->dev, "%s registered successfully\n", mfbi->id); |
1411 | |
1412 | return 0; |
1413 | } |
1414 | |
1415 | static void uninstall_fb(struct fb_info *info) |
1416 | { |
1417 | struct mfb_info *mfbi = info->par; |
1418 | |
1419 | if (!mfbi->registered) |
1420 | return; |
1421 | |
1422 | unregister_framebuffer(info); |
1423 | unmap_video_memory(info); |
1424 | if (&info->cmap) |
1425 | fb_dealloc_cmap(&info->cmap); |
1426 | |
1427 | mfbi->registered = 0; |
1428 | } |
1429 | |
1430 | static irqreturn_t fsl_diu_isr(int irq, void *dev_id) |
1431 | { |
1432 | struct diu __iomem *hw = dev_id; |
1433 | uint32_t status = in_be32(&hw->int_status); |
1434 | |
1435 | if (status) { |
1436 | /* This is the workaround for underrun */ |
1437 | if (status & INT_UNDRUN) { |
1438 | out_be32(&hw->diu_mode, 0); |
1439 | udelay(1); |
1440 | out_be32(&hw->diu_mode, 1); |
1441 | } |
1442 | #if defined(CONFIG_NOT_COHERENT_CACHE) |
1443 | else if (status & INT_VSYNC) { |
1444 | unsigned int i; |
1445 | |
1446 | for (i = 0; i < coherence_data_size; |
1447 | i += d_cache_line_size) |
1448 | __asm__ __volatile__ ( |
1449 | "dcbz 0, %[input]" |
1450 | ::[input]"r"(&coherence_data[i])); |
1451 | } |
1452 | #endif |
1453 | return IRQ_HANDLED; |
1454 | } |
1455 | return IRQ_NONE; |
1456 | } |
1457 | |
1458 | #ifdef CONFIG_PM |
1459 | /* |
1460 | * Power management hooks. Note that we won't be called from IRQ context, |
1461 | * unlike the blank functions above, so we may sleep. |
1462 | */ |
1463 | static int fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state) |
1464 | { |
1465 | struct fsl_diu_data *data; |
1466 | |
1467 | data = dev_get_drvdata(&ofdev->dev); |
1468 | disable_lcdc(data->fsl_diu_info); |
1469 | |
1470 | return 0; |
1471 | } |
1472 | |
1473 | static int fsl_diu_resume(struct platform_device *ofdev) |
1474 | { |
1475 | struct fsl_diu_data *data; |
1476 | |
1477 | data = dev_get_drvdata(&ofdev->dev); |
1478 | enable_lcdc(data->fsl_diu_info); |
1479 | |
1480 | return 0; |
1481 | } |
1482 | |
1483 | #else |
1484 | #define fsl_diu_suspend NULL |
1485 | #define fsl_diu_resume NULL |
1486 | #endif /* CONFIG_PM */ |
1487 | |
1488 | static ssize_t store_monitor(struct device *device, |
1489 | struct device_attribute *attr, const char *buf, size_t count) |
1490 | { |
1491 | enum fsl_diu_monitor_port old_monitor_port; |
1492 | struct fsl_diu_data *data = |
1493 | container_of(attr, struct fsl_diu_data, dev_attr); |
1494 | |
1495 | old_monitor_port = data->monitor_port; |
1496 | data->monitor_port = fsl_diu_name_to_port(buf); |
1497 | |
1498 | if (old_monitor_port != data->monitor_port) { |
1499 | /* All AOIs need adjust pixel format |
1500 | * fsl_diu_set_par only change the pixsel format here |
1501 | * unlikely to fail. */ |
1502 | unsigned int i; |
1503 | |
1504 | for (i=0; i < NUM_AOIS; i++) |
1505 | fsl_diu_set_par(&data->fsl_diu_info[i]); |
1506 | } |
1507 | return count; |
1508 | } |
1509 | |
1510 | static ssize_t show_monitor(struct device *device, |
1511 | struct device_attribute *attr, char *buf) |
1512 | { |
1513 | struct fsl_diu_data *data = |
1514 | container_of(attr, struct fsl_diu_data, dev_attr); |
1515 | |
1516 | switch (data->monitor_port) { |
1517 | case FSL_DIU_PORT_DVI: |
1518 | return sprintf(buf, "DVI\n"); |
1519 | case FSL_DIU_PORT_LVDS: |
1520 | return sprintf(buf, "Single-link LVDS\n"); |
1521 | case FSL_DIU_PORT_DLVDS: |
1522 | return sprintf(buf, "Dual-link LVDS\n"); |
1523 | } |
1524 | |
1525 | return 0; |
1526 | } |
1527 | |
1528 | static int fsl_diu_probe(struct platform_device *pdev) |
1529 | { |
1530 | struct device_node *np = pdev->dev.of_node; |
1531 | struct mfb_info *mfbi; |
1532 | struct fsl_diu_data *data; |
1533 | dma_addr_t dma_addr; /* DMA addr of fsl_diu_data struct */ |
1534 | const void *prop; |
1535 | unsigned int i; |
1536 | int ret; |
1537 | |
1538 | data = dmam_alloc_coherent(&pdev->dev, sizeof(struct fsl_diu_data), |
1539 | &dma_addr, GFP_DMA | __GFP_ZERO); |
1540 | if (!data) |
1541 | return -ENOMEM; |
1542 | data->dma_addr = dma_addr; |
1543 | |
1544 | /* |
1545 | * dma_alloc_coherent() uses a page allocator, so the address is |
1546 | * always page-aligned. We need the memory to be 32-byte aligned, |
1547 | * so that's good. However, if one day the allocator changes, we |
1548 | * need to catch that. It's not worth the effort to handle unaligned |
1549 | * alloctions now because it's highly unlikely to ever be a problem. |
1550 | */ |
1551 | if ((unsigned long)data & 31) { |
1552 | dev_err(&pdev->dev, "misaligned allocation"); |
1553 | ret = -ENOMEM; |
1554 | goto error; |
1555 | } |
1556 | |
1557 | spin_lock_init(&data->reg_lock); |
1558 | |
1559 | for (i = 0; i < NUM_AOIS; i++) { |
1560 | struct fb_info *info = &data->fsl_diu_info[i]; |
1561 | |
1562 | info->device = &pdev->dev; |
1563 | info->par = &data->mfb[i]; |
1564 | |
1565 | /* |
1566 | * We store the physical address of the AD in the reserved |
1567 | * 'paddr' field of the AD itself. |
1568 | */ |
1569 | data->ad[i].paddr = DMA_ADDR(data, ad[i]); |
1570 | |
1571 | info->fix.smem_start = 0; |
1572 | |
1573 | /* Initialize the AOI data structure */ |
1574 | mfbi = info->par; |
1575 | memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info)); |
1576 | mfbi->parent = data; |
1577 | mfbi->ad = &data->ad[i]; |
1578 | } |
1579 | |
1580 | /* Get the EDID data from the device tree, if present */ |
1581 | prop = of_get_property(np, "edid", &ret); |
1582 | if (prop && ret == EDID_LENGTH) { |
1583 | memcpy(data->edid_data, prop, EDID_LENGTH); |
1584 | data->has_edid = true; |
1585 | } |
1586 | |
1587 | data->diu_reg = of_iomap(np, 0); |
1588 | if (!data->diu_reg) { |
1589 | dev_err(&pdev->dev, "cannot map DIU registers\n"); |
1590 | ret = -EFAULT; |
1591 | goto error; |
1592 | } |
1593 | |
1594 | /* Get the IRQ of the DIU */ |
1595 | data->irq = irq_of_parse_and_map(np, 0); |
1596 | |
1597 | if (!data->irq) { |
1598 | dev_err(&pdev->dev, "could not get DIU IRQ\n"); |
1599 | ret = -EINVAL; |
1600 | goto error; |
1601 | } |
1602 | data->monitor_port = monitor_port; |
1603 | |
1604 | /* Initialize the dummy Area Descriptor */ |
1605 | data->dummy_ad.addr = cpu_to_le32(DMA_ADDR(data, dummy_aoi)); |
1606 | data->dummy_ad.pix_fmt = 0x88882317; |
1607 | data->dummy_ad.src_size_g_alpha = cpu_to_le32((4 << 12) | 4); |
1608 | data->dummy_ad.aoi_size = cpu_to_le32((4 << 16) | 2); |
1609 | data->dummy_ad.offset_xyi = 0; |
1610 | data->dummy_ad.offset_xyd = 0; |
1611 | data->dummy_ad.next_ad = 0; |
1612 | data->dummy_ad.paddr = DMA_ADDR(data, dummy_ad); |
1613 | |
1614 | /* |
1615 | * Let DIU continue to display splash screen if it was pre-initialized |
1616 | * by the bootloader; otherwise, clear the display. |
1617 | */ |
1618 | if (in_be32(&data->diu_reg->diu_mode) == MFB_MODE0) |
1619 | out_be32(&data->diu_reg->desc[0], 0); |
1620 | |
1621 | out_be32(&data->diu_reg->desc[1], data->dummy_ad.paddr); |
1622 | out_be32(&data->diu_reg->desc[2], data->dummy_ad.paddr); |
1623 | |
1624 | /* |
1625 | * Older versions of U-Boot leave interrupts enabled, so disable |
1626 | * all of them and clear the status register. |
1627 | */ |
1628 | out_be32(&data->diu_reg->int_mask, 0xffffffff); |
1629 | in_be32(&data->diu_reg->int_status); |
1630 | |
1631 | ret = request_irq(data->irq, fsl_diu_isr, 0, "fsl-diu-fb", |
1632 | data->diu_reg); |
1633 | if (ret) { |
1634 | dev_err(&pdev->dev, "could not claim irq\n"); |
1635 | goto error; |
1636 | } |
1637 | |
1638 | for (i = 0; i < NUM_AOIS; i++) { |
1639 | ret = install_fb(&data->fsl_diu_info[i]); |
1640 | if (ret) { |
1641 | dev_err(&pdev->dev, "could not register fb %d\n", i); |
1642 | free_irq(data->irq, data->diu_reg); |
1643 | goto error; |
1644 | } |
1645 | } |
1646 | |
1647 | sysfs_attr_init(&data->dev_attr.attr); |
1648 | data->dev_attr.attr.name = "monitor"; |
1649 | data->dev_attr.attr.mode = S_IRUGO|S_IWUSR; |
1650 | data->dev_attr.show = show_monitor; |
1651 | data->dev_attr.store = store_monitor; |
1652 | ret = device_create_file(&pdev->dev, &data->dev_attr); |
1653 | if (ret) { |
1654 | dev_err(&pdev->dev, "could not create sysfs file %s\n", |
1655 | data->dev_attr.attr.name); |
1656 | } |
1657 | |
1658 | dev_set_drvdata(&pdev->dev, data); |
1659 | return 0; |
1660 | |
1661 | error: |
1662 | for (i = 0; i < NUM_AOIS; i++) |
1663 | uninstall_fb(&data->fsl_diu_info[i]); |
1664 | |
1665 | iounmap(data->diu_reg); |
1666 | |
1667 | return ret; |
1668 | } |
1669 | |
1670 | static int fsl_diu_remove(struct platform_device *pdev) |
1671 | { |
1672 | struct fsl_diu_data *data; |
1673 | int i; |
1674 | |
1675 | data = dev_get_drvdata(&pdev->dev); |
1676 | disable_lcdc(&data->fsl_diu_info[0]); |
1677 | |
1678 | free_irq(data->irq, data->diu_reg); |
1679 | |
1680 | for (i = 0; i < NUM_AOIS; i++) |
1681 | uninstall_fb(&data->fsl_diu_info[i]); |
1682 | |
1683 | iounmap(data->diu_reg); |
1684 | |
1685 | return 0; |
1686 | } |
1687 | |
1688 | #ifndef MODULE |
1689 | static int __init fsl_diu_setup(char *options) |
1690 | { |
1691 | char *opt; |
1692 | unsigned long val; |
1693 | |
1694 | if (!options || !*options) |
1695 | return 0; |
1696 | |
1697 | while ((opt = strsep(&options, ",")) != NULL) { |
1698 | if (!*opt) |
1699 | continue; |
1700 | if (!strncmp(opt, "monitor=", 8)) { |
1701 | monitor_port = fsl_diu_name_to_port(opt + 8); |
1702 | } else if (!strncmp(opt, "bpp=", 4)) { |
1703 | if (!strict_strtoul(opt + 4, 10, &val)) |
1704 | default_bpp = val; |
1705 | } else |
1706 | fb_mode = opt; |
1707 | } |
1708 | |
1709 | return 0; |
1710 | } |
1711 | #endif |
1712 | |
1713 | static struct of_device_id fsl_diu_match[] = { |
1714 | #ifdef CONFIG_PPC_MPC512x |
1715 | { |
1716 | .compatible = "fsl,mpc5121-diu", |
1717 | }, |
1718 | #endif |
1719 | { |
1720 | .compatible = "fsl,diu", |
1721 | }, |
1722 | {} |
1723 | }; |
1724 | MODULE_DEVICE_TABLE(of, fsl_diu_match); |
1725 | |
1726 | static struct platform_driver fsl_diu_driver = { |
1727 | .driver = { |
1728 | .name = "fsl-diu-fb", |
1729 | .owner = THIS_MODULE, |
1730 | .of_match_table = fsl_diu_match, |
1731 | }, |
1732 | .probe = fsl_diu_probe, |
1733 | .remove = fsl_diu_remove, |
1734 | .suspend = fsl_diu_suspend, |
1735 | .resume = fsl_diu_resume, |
1736 | }; |
1737 | |
1738 | static int __init fsl_diu_init(void) |
1739 | { |
1740 | #ifdef CONFIG_NOT_COHERENT_CACHE |
1741 | struct device_node *np; |
1742 | const u32 *prop; |
1743 | #endif |
1744 | int ret; |
1745 | #ifndef MODULE |
1746 | char *option; |
1747 | |
1748 | /* |
1749 | * For kernel boot options (in 'video=xxxfb:<options>' format) |
1750 | */ |
1751 | if (fb_get_options("fslfb", &option)) |
1752 | return -ENODEV; |
1753 | fsl_diu_setup(option); |
1754 | #else |
1755 | monitor_port = fsl_diu_name_to_port(monitor_string); |
1756 | #endif |
1757 | pr_info("Freescale Display Interface Unit (DIU) framebuffer driver\n"); |
1758 | |
1759 | #ifdef CONFIG_NOT_COHERENT_CACHE |
1760 | np = of_find_node_by_type(NULL, "cpu"); |
1761 | if (!np) { |
1762 | pr_err("fsl-diu-fb: can't find 'cpu' device node\n"); |
1763 | return -ENODEV; |
1764 | } |
1765 | |
1766 | prop = of_get_property(np, "d-cache-size", NULL); |
1767 | if (prop == NULL) { |
1768 | pr_err("fsl-diu-fb: missing 'd-cache-size' property' " |
1769 | "in 'cpu' node\n"); |
1770 | of_node_put(np); |
1771 | return -ENODEV; |
1772 | } |
1773 | |
1774 | /* |
1775 | * Freescale PLRU requires 13/8 times the cache size to do a proper |
1776 | * displacement flush |
1777 | */ |
1778 | coherence_data_size = be32_to_cpup(prop) * 13; |
1779 | coherence_data_size /= 8; |
1780 | |
1781 | pr_debug("fsl-diu-fb: coherence data size is %zu bytes\n", |
1782 | coherence_data_size); |
1783 | |
1784 | prop = of_get_property(np, "d-cache-line-size", NULL); |
1785 | if (prop == NULL) { |
1786 | pr_err("fsl-diu-fb: missing 'd-cache-line-size' property' " |
1787 | "in 'cpu' node\n"); |
1788 | of_node_put(np); |
1789 | return -ENODEV; |
1790 | } |
1791 | d_cache_line_size = be32_to_cpup(prop); |
1792 | |
1793 | pr_debug("fsl-diu-fb: cache lines size is %u bytes\n", |
1794 | d_cache_line_size); |
1795 | |
1796 | of_node_put(np); |
1797 | coherence_data = vmalloc(coherence_data_size); |
1798 | if (!coherence_data) { |
1799 | pr_err("fsl-diu-fb: could not allocate coherence data " |
1800 | "(size=%zu)\n", coherence_data_size); |
1801 | return -ENOMEM; |
1802 | } |
1803 | |
1804 | #endif |
1805 | |
1806 | ret = platform_driver_register(&fsl_diu_driver); |
1807 | if (ret) { |
1808 | pr_err("fsl-diu-fb: failed to register platform driver\n"); |
1809 | #if defined(CONFIG_NOT_COHERENT_CACHE) |
1810 | vfree(coherence_data); |
1811 | #endif |
1812 | } |
1813 | return ret; |
1814 | } |
1815 | |
1816 | static void __exit fsl_diu_exit(void) |
1817 | { |
1818 | platform_driver_unregister(&fsl_diu_driver); |
1819 | #if defined(CONFIG_NOT_COHERENT_CACHE) |
1820 | vfree(coherence_data); |
1821 | #endif |
1822 | } |
1823 | |
1824 | module_init(fsl_diu_init); |
1825 | module_exit(fsl_diu_exit); |
1826 | |
1827 | MODULE_AUTHOR("York Sun <yorksun@freescale.com>"); |
1828 | MODULE_DESCRIPTION("Freescale DIU framebuffer driver"); |
1829 | MODULE_LICENSE("GPL"); |
1830 | |
1831 | module_param_named(mode, fb_mode, charp, 0); |
1832 | MODULE_PARM_DESC(mode, |
1833 | "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" "); |
1834 | module_param_named(bpp, default_bpp, ulong, 0); |
1835 | MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified in 'mode'"); |
1836 | module_param_named(monitor, monitor_string, charp, 0); |
1837 | MODULE_PARM_DESC(monitor, "Specify the monitor port " |
1838 | "(\"dvi\", \"lvds\", or \"dlvds\") if supported by the platform"); |
1839 | |
1840 |
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