projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'topic/cleanup' into for-linus
[linux-2.6-block.git] / drivers / video / omap / dispc.c
CommitLineData
7a055fc2
ID		 1/*
2 * OMAP2 display controller support
3 *
4 * Copyright (C) 2005 Nokia Corporation
5 * Author: Imre Deak <imre.deak@nokia.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21#include <linux/kernel.h>
22#include <linux/dma-mapping.h>
27ac792c 23#include <linux/mm.h>
7a055fc2
ID		 24#include <linux/vmalloc.h>
25#include <linux/clk.h>
26#include <linux/io.h>
27
a09e64fb
RK		 28#include <mach/sram.h>
29#include <mach/omapfb.h>
30#include <mach/board.h>
7a055fc2
ID		 31
32#include "dispc.h"
33
34#define MODULE_NAME "dispc"
35
36#define DSS_BASE 0x48050000
37#define DSS_SYSCONFIG 0x0010
38
39#define DISPC_BASE 0x48050400
40
41/* DISPC common */
42#define DISPC_REVISION 0x0000
43#define DISPC_SYSCONFIG 0x0010
44#define DISPC_SYSSTATUS 0x0014
45#define DISPC_IRQSTATUS 0x0018
46#define DISPC_IRQENABLE 0x001C
47#define DISPC_CONTROL 0x0040
48#define DISPC_CONFIG 0x0044
49#define DISPC_CAPABLE 0x0048
50#define DISPC_DEFAULT_COLOR0 0x004C
51#define DISPC_DEFAULT_COLOR1 0x0050
52#define DISPC_TRANS_COLOR0 0x0054
53#define DISPC_TRANS_COLOR1 0x0058
54#define DISPC_LINE_STATUS 0x005C
55#define DISPC_LINE_NUMBER 0x0060
56#define DISPC_TIMING_H 0x0064
57#define DISPC_TIMING_V 0x0068
58#define DISPC_POL_FREQ 0x006C
59#define DISPC_DIVISOR 0x0070
60#define DISPC_SIZE_DIG 0x0078
61#define DISPC_SIZE_LCD 0x007C
62
63#define DISPC_DATA_CYCLE1 0x01D4
64#define DISPC_DATA_CYCLE2 0x01D8
65#define DISPC_DATA_CYCLE3 0x01DC
66
67/* DISPC GFX plane */
68#define DISPC_GFX_BA0 0x0080
69#define DISPC_GFX_BA1 0x0084
70#define DISPC_GFX_POSITION 0x0088
71#define DISPC_GFX_SIZE 0x008C
72#define DISPC_GFX_ATTRIBUTES 0x00A0
73#define DISPC_GFX_FIFO_THRESHOLD 0x00A4
74#define DISPC_GFX_FIFO_SIZE_STATUS 0x00A8
75#define DISPC_GFX_ROW_INC 0x00AC
76#define DISPC_GFX_PIXEL_INC 0x00B0
77#define DISPC_GFX_WINDOW_SKIP 0x00B4
78#define DISPC_GFX_TABLE_BA 0x00B8
79
80/* DISPC Video plane 1/2 */
81#define DISPC_VID1_BASE 0x00BC
82#define DISPC_VID2_BASE 0x014C
83
84/* Offsets into DISPC_VID1/2_BASE */
85#define DISPC_VID_BA0 0x0000
86#define DISPC_VID_BA1 0x0004
87#define DISPC_VID_POSITION 0x0008
88#define DISPC_VID_SIZE 0x000C
89#define DISPC_VID_ATTRIBUTES 0x0010
90#define DISPC_VID_FIFO_THRESHOLD 0x0014
91#define DISPC_VID_FIFO_SIZE_STATUS 0x0018
92#define DISPC_VID_ROW_INC 0x001C
93#define DISPC_VID_PIXEL_INC 0x0020
94#define DISPC_VID_FIR 0x0024
95#define DISPC_VID_PICTURE_SIZE 0x0028
96#define DISPC_VID_ACCU0 0x002C
97#define DISPC_VID_ACCU1 0x0030
98
99/* 8 elements in 8 byte increments */
100#define DISPC_VID_FIR_COEF_H0 0x0034
101/* 8 elements in 8 byte increments */
102#define DISPC_VID_FIR_COEF_HV0 0x0038
103/* 5 elements in 4 byte increments */
104#define DISPC_VID_CONV_COEF0 0x0074
105
106#define DISPC_IRQ_FRAMEMASK 0x0001
107#define DISPC_IRQ_VSYNC 0x0002
108#define DISPC_IRQ_EVSYNC_EVEN 0x0004
109#define DISPC_IRQ_EVSYNC_ODD 0x0008
110#define DISPC_IRQ_ACBIAS_COUNT_STAT 0x0010
111#define DISPC_IRQ_PROG_LINE_NUM 0x0020
112#define DISPC_IRQ_GFX_FIFO_UNDERFLOW 0x0040
113#define DISPC_IRQ_GFX_END_WIN 0x0080
114#define DISPC_IRQ_PAL_GAMMA_MASK 0x0100
115#define DISPC_IRQ_OCP_ERR 0x0200
116#define DISPC_IRQ_VID1_FIFO_UNDERFLOW 0x0400
117#define DISPC_IRQ_VID1_END_WIN 0x0800
118#define DISPC_IRQ_VID2_FIFO_UNDERFLOW 0x1000
119#define DISPC_IRQ_VID2_END_WIN 0x2000
120#define DISPC_IRQ_SYNC_LOST 0x4000
121
122#define DISPC_IRQ_MASK_ALL 0x7fff
123
124#define DISPC_IRQ_MASK_ERROR (DISPC_IRQ_GFX_FIFO_UNDERFLOW | \
125 DISPC_IRQ_VID1_FIFO_UNDERFLOW | \
126 DISPC_IRQ_VID2_FIFO_UNDERFLOW | \
127 DISPC_IRQ_SYNC_LOST)
128
129#define RFBI_CONTROL 0x48050040
130
131#define MAX_PALETTE_SIZE (256 * 16)
132
133#define FLD_MASK(pos, len) (((1 << len) - 1) << pos)
134
135#define MOD_REG_FLD(reg, mask, val) \
136 dispc_write_reg((reg), (dispc_read_reg(reg) & ~(mask)) | (val));
137
138#define OMAP2_SRAM_START 0x40200000
139/* Maximum size, in reality this is smaller if SRAM is partially locked. */
140#define OMAP2_SRAM_SIZE 0xa0000 /* 640k */
141
142/* We support the SDRAM / SRAM types. See OMAPFB_PLANE_MEMTYPE_* in omapfb.h */
143#define DISPC_MEMTYPE_NUM 2
144
145#define RESMAP_SIZE(_page_cnt) \
146 ((_page_cnt + (sizeof(unsigned long) * 8) - 1) / 8)
147#define RESMAP_PTR(_res_map, _page_nr) \
148 (((_res_map)->map) + (_page_nr) / (sizeof(unsigned long) * 8))
149#define RESMAP_MASK(_page_nr) \
150 (1 << ((_page_nr) & (sizeof(unsigned long) * 8 - 1)))
151
152struct resmap {
153 unsigned long start;
154 unsigned page_cnt;
155 unsigned long *map;
156};
157
158static struct {
55c381e4 159 void __iomem *base;
7a055fc2
ID		 160
161 struct omapfb_mem_desc mem_desc;
162 struct resmap *res_map[DISPC_MEMTYPE_NUM];
163 atomic_t map_count[OMAPFB_PLANE_NUM];
164
165 dma_addr_t palette_paddr;
166 void *palette_vaddr;
167
168 int ext_mode;
169
170 unsigned long enabled_irqs;
171 void (*irq_callback)(void *);
172 void *irq_callback_data;
173 struct completion frame_done;
174
175 int fir_hinc[OMAPFB_PLANE_NUM];
176 int fir_vinc[OMAPFB_PLANE_NUM];
177
178 struct clk *dss_ick, *dss1_fck;
179 struct clk *dss_54m_fck;
180
181 enum omapfb_update_mode update_mode;
182 struct omapfb_device *fbdev;
183
184 struct omapfb_color_key color_key;
185} dispc;
186
187static void enable_lcd_clocks(int enable);
188
189static void inline dispc_write_reg(int idx, u32 val)
190{
191 __raw_writel(val, dispc.base + idx);
192}
193
194static u32 inline dispc_read_reg(int idx)
195{
196 u32 l = __raw_readl(dispc.base + idx);
197 return l;
198}
199
200/* Select RFBI or bypass mode */
201static void enable_rfbi_mode(int enable)
202{
203 u32 l;
204
205 l = dispc_read_reg(DISPC_CONTROL);
206 /* Enable RFBI, GPIO0/1 */
207 l &= ~((1 << 11) | (1 << 15) | (1 << 16));
208 l |= enable ? (1 << 11) : 0;
209 /* RFBI En: GPIO0/1=10 RFBI Dis: GPIO0/1=11 */
210 l |= 1 << 15;
211 l |= enable ? 0 : (1 << 16);
212 dispc_write_reg(DISPC_CONTROL, l);
213
214 /* Set bypass mode in RFBI module */
e8a91c95 215 l = __raw_readl(IO_ADDRESS(RFBI_CONTROL));
7a055fc2 216 l |= enable ? 0 : (1 << 1);
e8a91c95 217 __raw_writel(l, IO_ADDRESS(RFBI_CONTROL));
7a055fc2
ID		 218}
219
220static void set_lcd_data_lines(int data_lines)
221{
222 u32 l;
223 int code = 0;
224
225 switch (data_lines) {
226 case 12:
227 code = 0;
228 break;
229 case 16:
230 code = 1;
231 break;
232 case 18:
233 code = 2;
234 break;
235 case 24:
236 code = 3;
237 break;
238 default:
239 BUG();
240 }
241
242 l = dispc_read_reg(DISPC_CONTROL);
243 l &= ~(0x03 << 8);
244 l |= code << 8;
245 dispc_write_reg(DISPC_CONTROL, l);
246}
247
248static void set_load_mode(int mode)
249{
250 BUG_ON(mode & ~(DISPC_LOAD_CLUT_ONLY | DISPC_LOAD_FRAME_ONLY |
251 DISPC_LOAD_CLUT_ONCE_FRAME));
252 MOD_REG_FLD(DISPC_CONFIG, 0x03 << 1, mode << 1);
253}
254
255void omap_dispc_set_lcd_size(int x, int y)
256{
257 BUG_ON((x > (1 << 11)) || (y > (1 << 11)));
258 enable_lcd_clocks(1);
259 MOD_REG_FLD(DISPC_SIZE_LCD, FLD_MASK(16, 11) | FLD_MASK(0, 11),
260 ((y - 1) << 16) | (x - 1));
261 enable_lcd_clocks(0);
262}
263EXPORT_SYMBOL(omap_dispc_set_lcd_size);
264
265void omap_dispc_set_digit_size(int x, int y)
266{
267 BUG_ON((x > (1 << 11)) || (y > (1 << 11)));
268 enable_lcd_clocks(1);
269 MOD_REG_FLD(DISPC_SIZE_DIG, FLD_MASK(16, 11) | FLD_MASK(0, 11),
270 ((y - 1) << 16) | (x - 1));
271 enable_lcd_clocks(0);
272}
273EXPORT_SYMBOL(omap_dispc_set_digit_size);
274
275static void setup_plane_fifo(int plane, int ext_mode)
276{
277 const u32 ftrs_reg[] = { DISPC_GFX_FIFO_THRESHOLD,
278 DISPC_VID1_BASE + DISPC_VID_FIFO_THRESHOLD,
279 DISPC_VID2_BASE + DISPC_VID_FIFO_THRESHOLD };
280 const u32 fsz_reg[] = { DISPC_GFX_FIFO_SIZE_STATUS,
281 DISPC_VID1_BASE + DISPC_VID_FIFO_SIZE_STATUS,
282 DISPC_VID2_BASE + DISPC_VID_FIFO_SIZE_STATUS };
283 int low, high;
284 u32 l;
285
286 BUG_ON(plane > 2);
287
288 l = dispc_read_reg(fsz_reg[plane]);
289 l &= FLD_MASK(0, 9);
290 if (ext_mode) {
291 low = l * 3 / 4;
292 high = l;
293 } else {
294 low = l / 4;
295 high = l * 3 / 4;
296 }
297 MOD_REG_FLD(ftrs_reg[plane], FLD_MASK(16, 9) | FLD_MASK(0, 9),
298 (high << 16) | low);
299}
300
301void omap_dispc_enable_lcd_out(int enable)
302{
303 enable_lcd_clocks(1);
304 MOD_REG_FLD(DISPC_CONTROL, 1, enable ? 1 : 0);
305 enable_lcd_clocks(0);
306}
307EXPORT_SYMBOL(omap_dispc_enable_lcd_out);
308
309void omap_dispc_enable_digit_out(int enable)
310{
311 enable_lcd_clocks(1);
312 MOD_REG_FLD(DISPC_CONTROL, 1 << 1, enable ? 1 << 1 : 0);
313 enable_lcd_clocks(0);
314}
315EXPORT_SYMBOL(omap_dispc_enable_digit_out);
316
317static inline int _setup_plane(int plane, int channel_out,
318 u32 paddr, int screen_width,
319 int pos_x, int pos_y, int width, int height,
320 int color_mode)
321{
322 const u32 at_reg[] = { DISPC_GFX_ATTRIBUTES,
323 DISPC_VID1_BASE + DISPC_VID_ATTRIBUTES,
324 DISPC_VID2_BASE + DISPC_VID_ATTRIBUTES };
325 const u32 ba_reg[] = { DISPC_GFX_BA0, DISPC_VID1_BASE + DISPC_VID_BA0,
326 DISPC_VID2_BASE + DISPC_VID_BA0 };
327 const u32 ps_reg[] = { DISPC_GFX_POSITION,
328 DISPC_VID1_BASE + DISPC_VID_POSITION,
329 DISPC_VID2_BASE + DISPC_VID_POSITION };
330 const u32 sz_reg[] = { DISPC_GFX_SIZE,
331 DISPC_VID1_BASE + DISPC_VID_PICTURE_SIZE,
332 DISPC_VID2_BASE + DISPC_VID_PICTURE_SIZE };
333 const u32 ri_reg[] = { DISPC_GFX_ROW_INC,
334 DISPC_VID1_BASE + DISPC_VID_ROW_INC,
335 DISPC_VID2_BASE + DISPC_VID_ROW_INC };
336 const u32 vs_reg[] = { 0, DISPC_VID1_BASE + DISPC_VID_SIZE,
337 DISPC_VID2_BASE + DISPC_VID_SIZE };
338
339 int chout_shift, burst_shift;
340 int chout_val;
341 int color_code;
342 int bpp;
343 int cconv_en;
344 int set_vsize;
345 u32 l;
346
347#ifdef VERBOSE
348 dev_dbg(dispc.fbdev->dev, "plane %d channel %d paddr %#08x scr_width %d"
349 " pos_x %d pos_y %d width %d height %d color_mode %d\n",
350 plane, channel_out, paddr, screen_width, pos_x, pos_y,
351 width, height, color_mode);
352#endif
353
354 set_vsize = 0;
355 switch (plane) {
356 case OMAPFB_PLANE_GFX:
357 burst_shift = 6;
358 chout_shift = 8;
359 break;
360 case OMAPFB_PLANE_VID1:
361 case OMAPFB_PLANE_VID2:
362 burst_shift = 14;
363 chout_shift = 16;
364 set_vsize = 1;
365 break;
366 default:
367 return -EINVAL;
368 }
369
370 switch (channel_out) {
371 case OMAPFB_CHANNEL_OUT_LCD:
372 chout_val = 0;
373 break;
374 case OMAPFB_CHANNEL_OUT_DIGIT:
375 chout_val = 1;
376 break;
377 default:
378 return -EINVAL;
379 }
380
381 cconv_en = 0;
382 switch (color_mode) {
383 case OMAPFB_COLOR_RGB565:
384 color_code = DISPC_RGB_16_BPP;
385 bpp = 16;
386 break;
387 case OMAPFB_COLOR_YUV422:
388 if (plane == 0)
389 return -EINVAL;
390 color_code = DISPC_UYVY_422;
391 cconv_en = 1;
392 bpp = 16;
393 break;
394 case OMAPFB_COLOR_YUY422:
395 if (plane == 0)
396 return -EINVAL;
397 color_code = DISPC_YUV2_422;
398 cconv_en = 1;
399 bpp = 16;
400 break;
401 default:
402 return -EINVAL;
403 }
404
405 l = dispc_read_reg(at_reg[plane]);
406
407 l &= ~(0x0f << 1);
408 l |= color_code << 1;
409 l &= ~(1 << 9);
410 l |= cconv_en << 9;
411
412 l &= ~(0x03 << burst_shift);
413 l |= DISPC_BURST_8x32 << burst_shift;
414
415 l &= ~(1 << chout_shift);
416 l |= chout_val << chout_shift;
417
418 dispc_write_reg(at_reg[plane], l);
419
420 dispc_write_reg(ba_reg[plane], paddr);
421 MOD_REG_FLD(ps_reg[plane],
422 FLD_MASK(16, 11) | FLD_MASK(0, 11), (pos_y << 16) | pos_x);
423
424 MOD_REG_FLD(sz_reg[plane], FLD_MASK(16, 11) | FLD_MASK(0, 11),
425 ((height - 1) << 16) | (width - 1));
426
427 if (set_vsize) {
428 /* Set video size if set_scale hasn't set it */
429 if (!dispc.fir_vinc[plane])
430 MOD_REG_FLD(vs_reg[plane],
431 FLD_MASK(16, 11), (height - 1) << 16);
432 if (!dispc.fir_hinc[plane])
433 MOD_REG_FLD(vs_reg[plane],
434 FLD_MASK(0, 11), width - 1);
435 }
436
437 dispc_write_reg(ri_reg[plane], (screen_width - width) * bpp / 8 + 1);
438
439 return height * screen_width * bpp / 8;
440}
441
442static int omap_dispc_setup_plane(int plane, int channel_out,
443 unsigned long offset,
444 int screen_width,
445 int pos_x, int pos_y, int width, int height,
446 int color_mode)
447{
448 u32 paddr;
449 int r;
450
451 if ((unsigned)plane > dispc.mem_desc.region_cnt)
452 return -EINVAL;
453 paddr = dispc.mem_desc.region[plane].paddr + offset;
454 enable_lcd_clocks(1);
455 r = _setup_plane(plane, channel_out, paddr,
456 screen_width,
457 pos_x, pos_y, width, height, color_mode);
458 enable_lcd_clocks(0);
459 return r;
460}
461
462static void write_firh_reg(int plane, int reg, u32 value)
463{
464 u32 base;
465
466 if (plane == 1)
467 base = DISPC_VID1_BASE + DISPC_VID_FIR_COEF_H0;
468 else
469 base = DISPC_VID2_BASE + DISPC_VID_FIR_COEF_H0;
470 dispc_write_reg(base + reg * 8, value);
471}
472
473static void write_firhv_reg(int plane, int reg, u32 value)
474{
475 u32 base;
476
477 if (plane == 1)
478 base = DISPC_VID1_BASE + DISPC_VID_FIR_COEF_HV0;
479 else
480 base = DISPC_VID2_BASE + DISPC_VID_FIR_COEF_HV0;
481 dispc_write_reg(base + reg * 8, value);
482}
483
484static void set_upsampling_coef_table(int plane)
485{
486 const u32 coef[][2] = {
487 { 0x00800000, 0x00800000 },
488 { 0x0D7CF800, 0x037B02FF },
489 { 0x1E70F5FF, 0x0C6F05FE },
490 { 0x335FF5FE, 0x205907FB },
491 { 0xF74949F7, 0x00404000 },
492 { 0xF55F33FB, 0x075920FE },
493 { 0xF5701EFE, 0x056F0CFF },
494 { 0xF87C0DFF, 0x027B0300 },
495 };
496 int i;
497
498 for (i = 0; i < 8; i++) {
499 write_firh_reg(plane, i, coef[i][0]);
500 write_firhv_reg(plane, i, coef[i][1]);
501 }
502}
503
504static int omap_dispc_set_scale(int plane,
505 int orig_width, int orig_height,
506 int out_width, int out_height)
507{
508 const u32 at_reg[] = { 0, DISPC_VID1_BASE + DISPC_VID_ATTRIBUTES,
509 DISPC_VID2_BASE + DISPC_VID_ATTRIBUTES };
510 const u32 vs_reg[] = { 0, DISPC_VID1_BASE + DISPC_VID_SIZE,
511 DISPC_VID2_BASE + DISPC_VID_SIZE };
512 const u32 fir_reg[] = { 0, DISPC_VID1_BASE + DISPC_VID_FIR,
513 DISPC_VID2_BASE + DISPC_VID_FIR };
514
515 u32 l;
516 int fir_hinc;
517 int fir_vinc;
518
519 if ((unsigned)plane > OMAPFB_PLANE_NUM)
520 return -ENODEV;
521
522 if (plane == OMAPFB_PLANE_GFX &&
523 (out_width != orig_width || out_height != orig_height))
524 return -EINVAL;
525
526 enable_lcd_clocks(1);
527 if (orig_width < out_width) {
528 /*
529 * Upsampling.
530 * Currently you can only scale both dimensions in one way.
531 */
532 if (orig_height > out_height ||
533 orig_width * 8 < out_width ||
534 orig_height * 8 < out_height) {
535 enable_lcd_clocks(0);
536 return -EINVAL;
537 }
538 set_upsampling_coef_table(plane);
539 } else if (orig_width > out_width) {
540 /* Downsampling not yet supported
541 */
542
543 enable_lcd_clocks(0);
544 return -EINVAL;
545 }
546 if (!orig_width || orig_width == out_width)
547 fir_hinc = 0;
548 else
549 fir_hinc = 1024 * orig_width / out_width;
550 if (!orig_height || orig_height == out_height)
551 fir_vinc = 0;
552 else
553 fir_vinc = 1024 * orig_height / out_height;
554 dispc.fir_hinc[plane] = fir_hinc;
555 dispc.fir_vinc[plane] = fir_vinc;
556
557 MOD_REG_FLD(fir_reg[plane],
558 FLD_MASK(16, 12) | FLD_MASK(0, 12),
559 ((fir_vinc & 4095) << 16) |
560 (fir_hinc & 4095));
561
562 dev_dbg(dispc.fbdev->dev, "out_width %d out_height %d orig_width %d "
563 "orig_height %d fir_hinc %d fir_vinc %d\n",
564 out_width, out_height, orig_width, orig_height,
565 fir_hinc, fir_vinc);
566
567 MOD_REG_FLD(vs_reg[plane],
568 FLD_MASK(16, 11) | FLD_MASK(0, 11),
569 ((out_height - 1) << 16) | (out_width - 1));
570
571 l = dispc_read_reg(at_reg[plane]);
572 l &= ~(0x03 << 5);
573 l |= fir_hinc ? (1 << 5) : 0;
574 l |= fir_vinc ? (1 << 6) : 0;
575 dispc_write_reg(at_reg[plane], l);
576
577 enable_lcd_clocks(0);
578 return 0;
579}
580
581static int omap_dispc_enable_plane(int plane, int enable)
582{
583 const u32 at_reg[] = { DISPC_GFX_ATTRIBUTES,
584 DISPC_VID1_BASE + DISPC_VID_ATTRIBUTES,
585 DISPC_VID2_BASE + DISPC_VID_ATTRIBUTES };
586 if ((unsigned int)plane > dispc.mem_desc.region_cnt)
587 return -EINVAL;
588
589 enable_lcd_clocks(1);
590 MOD_REG_FLD(at_reg[plane], 1, enable ? 1 : 0);
591 enable_lcd_clocks(0);
592
593 return 0;
594}
595
596static int omap_dispc_set_color_key(struct omapfb_color_key *ck)
597{
598 u32 df_reg, tr_reg;
599 int shift, val;
600
601 switch (ck->channel_out) {
602 case OMAPFB_CHANNEL_OUT_LCD:
603 df_reg = DISPC_DEFAULT_COLOR0;
604 tr_reg = DISPC_TRANS_COLOR0;
605 shift = 10;
606 break;
607 case OMAPFB_CHANNEL_OUT_DIGIT:
608 df_reg = DISPC_DEFAULT_COLOR1;
609 tr_reg = DISPC_TRANS_COLOR1;
610 shift = 12;
611 break;
612 default:
613 return -EINVAL;
614 }
615 switch (ck->key_type) {
616 case OMAPFB_COLOR_KEY_DISABLED:
617 val = 0;
618 break;
619 case OMAPFB_COLOR_KEY_GFX_DST:
620 val = 1;
621 break;
622 case OMAPFB_COLOR_KEY_VID_SRC:
623 val = 3;
624 break;
625 default:
626 return -EINVAL;
627 }
628 enable_lcd_clocks(1);
629 MOD_REG_FLD(DISPC_CONFIG, FLD_MASK(shift, 2), val << shift);
630
631 if (val != 0)
632 dispc_write_reg(tr_reg, ck->trans_key);
633 dispc_write_reg(df_reg, ck->background);
634 enable_lcd_clocks(0);
635
636 dispc.color_key = *ck;
637
638 return 0;
639}
640
641static int omap_dispc_get_color_key(struct omapfb_color_key *ck)
642{
643 *ck = dispc.color_key;
644 return 0;
645}
646
647static void load_palette(void)
648{
649}
650
651static int omap_dispc_set_update_mode(enum omapfb_update_mode mode)
652{
653 int r = 0;
654
655 if (mode != dispc.update_mode) {
656 switch (mode) {
657 case OMAPFB_AUTO_UPDATE:
658 case OMAPFB_MANUAL_UPDATE:
659 enable_lcd_clocks(1);
660 omap_dispc_enable_lcd_out(1);
661 dispc.update_mode = mode;
662 break;
663 case OMAPFB_UPDATE_DISABLED:
664 init_completion(&dispc.frame_done);
665 omap_dispc_enable_lcd_out(0);
666 if (!wait_for_completion_timeout(&dispc.frame_done,
667 msecs_to_jiffies(500))) {
668 dev_err(dispc.fbdev->dev,
669 "timeout waiting for FRAME DONE\n");
670 }
671 dispc.update_mode = mode;
672 enable_lcd_clocks(0);
673 break;
674 default:
675 r = -EINVAL;
676 }
677 }
678
679 return r;
680}
681
682static void omap_dispc_get_caps(int plane, struct omapfb_caps *caps)
683{
684 caps->ctrl |= OMAPFB_CAPS_PLANE_RELOCATE_MEM;
685 if (plane > 0)
686 caps->ctrl |= OMAPFB_CAPS_PLANE_SCALE;
687 caps->plane_color |= (1 << OMAPFB_COLOR_RGB565) |
688 (1 << OMAPFB_COLOR_YUV422) |
689 (1 << OMAPFB_COLOR_YUY422);
690 if (plane == 0)
691 caps->plane_color |= (1 << OMAPFB_COLOR_CLUT_8BPP) |
692 (1 << OMAPFB_COLOR_CLUT_4BPP) |
693 (1 << OMAPFB_COLOR_CLUT_2BPP) |
694 (1 << OMAPFB_COLOR_CLUT_1BPP) |
695 (1 << OMAPFB_COLOR_RGB444);
696}
697
698static enum omapfb_update_mode omap_dispc_get_update_mode(void)
699{
700 return dispc.update_mode;
701}
702
703static void setup_color_conv_coef(void)
704{
705 u32 mask = FLD_MASK(16, 11) | FLD_MASK(0, 11);
706 int cf1_reg = DISPC_VID1_BASE + DISPC_VID_CONV_COEF0;
707 int cf2_reg = DISPC_VID2_BASE + DISPC_VID_CONV_COEF0;
708 int at1_reg = DISPC_VID1_BASE + DISPC_VID_ATTRIBUTES;
709 int at2_reg = DISPC_VID2_BASE + DISPC_VID_ATTRIBUTES;
710 const struct color_conv_coef {
711 int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb;
712 int full_range;
713 } ctbl_bt601_5 = {
714 298, 409, 0, 298, -208, -100, 298, 0, 517, 0,
715 };
716 const struct color_conv_coef *ct;
717#define CVAL(x, y) (((x & 2047) << 16) | (y & 2047))
718
719 ct = &ctbl_bt601_5;
720
721 MOD_REG_FLD(cf1_reg, mask, CVAL(ct->rcr, ct->ry));
722 MOD_REG_FLD(cf1_reg + 4, mask, CVAL(ct->gy, ct->rcb));
723 MOD_REG_FLD(cf1_reg + 8, mask, CVAL(ct->gcb, ct->gcr));
724 MOD_REG_FLD(cf1_reg + 12, mask, CVAL(ct->bcr, ct->by));
725 MOD_REG_FLD(cf1_reg + 16, mask, CVAL(0, ct->bcb));
726
727 MOD_REG_FLD(cf2_reg, mask, CVAL(ct->rcr, ct->ry));
728 MOD_REG_FLD(cf2_reg + 4, mask, CVAL(ct->gy, ct->rcb));
729 MOD_REG_FLD(cf2_reg + 8, mask, CVAL(ct->gcb, ct->gcr));
730 MOD_REG_FLD(cf2_reg + 12, mask, CVAL(ct->bcr, ct->by));
731 MOD_REG_FLD(cf2_reg + 16, mask, CVAL(0, ct->bcb));
732#undef CVAL
733
734 MOD_REG_FLD(at1_reg, (1 << 11), ct->full_range);
735 MOD_REG_FLD(at2_reg, (1 << 11), ct->full_range);
736}
737
738static void calc_ck_div(int is_tft, int pck, int *lck_div, int *pck_div)
739{
740 unsigned long fck, lck;
741
742 *lck_div = 1;
743 pck = max(1, pck);
744 fck = clk_get_rate(dispc.dss1_fck);
745 lck = fck;
746 *pck_div = (lck + pck - 1) / pck;
747 if (is_tft)
748 *pck_div = max(2, *pck_div);
749 else
750 *pck_div = max(3, *pck_div);
751 if (*pck_div > 255) {
752 *pck_div = 255;
753 lck = pck * *pck_div;
754 *lck_div = fck / lck;
755 BUG_ON(*lck_div < 1);
756 if (*lck_div > 255) {
757 *lck_div = 255;
758 dev_warn(dispc.fbdev->dev, "pixclock %d kHz too low.\n",
759 pck / 1000);
760 }
761 }
762}
763
764static void set_lcd_tft_mode(int enable)
765{
766 u32 mask;
767
768 mask = 1 << 3;
769 MOD_REG_FLD(DISPC_CONTROL, mask, enable ? mask : 0);
770}
771
772static void set_lcd_timings(void)
773{
774 u32 l;
775 int lck_div, pck_div;
776 struct lcd_panel *panel = dispc.fbdev->panel;
777 int is_tft = panel->config & OMAP_LCDC_PANEL_TFT;
778 unsigned long fck;
779
780 l = dispc_read_reg(DISPC_TIMING_H);
781 l &= ~(FLD_MASK(0, 6) | FLD_MASK(8, 8) | FLD_MASK(20, 8));
782 l |= ( max(1, (min(64, panel->hsw))) - 1 ) << 0;
783 l |= ( max(1, (min(256, panel->hfp))) - 1 ) << 8;
784 l |= ( max(1, (min(256, panel->hbp))) - 1 ) << 20;
785 dispc_write_reg(DISPC_TIMING_H, l);
786
787 l = dispc_read_reg(DISPC_TIMING_V);
788 l &= ~(FLD_MASK(0, 6) | FLD_MASK(8, 8) | FLD_MASK(20, 8));
789 l |= ( max(1, (min(64, panel->vsw))) - 1 ) << 0;
790 l |= ( max(0, (min(255, panel->vfp))) - 0 ) << 8;
791 l |= ( max(0, (min(255, panel->vbp))) - 0 ) << 20;
792 dispc_write_reg(DISPC_TIMING_V, l);
793
794 l = dispc_read_reg(DISPC_POL_FREQ);
795 l &= ~FLD_MASK(12, 6);
796 l |= (panel->config & OMAP_LCDC_SIGNAL_MASK) << 12;
797 l |= panel->acb & 0xff;
798 dispc_write_reg(DISPC_POL_FREQ, l);
799
800 calc_ck_div(is_tft, panel->pixel_clock * 1000, &lck_div, &pck_div);
801
802 l = dispc_read_reg(DISPC_DIVISOR);
803 l &= ~(FLD_MASK(16, 8) | FLD_MASK(0, 8));
804 l |= (lck_div << 16) | (pck_div << 0);
805 dispc_write_reg(DISPC_DIVISOR, l);
806
807 /* update panel info with the exact clock */
808 fck = clk_get_rate(dispc.dss1_fck);
809 panel->pixel_clock = fck / lck_div / pck_div / 1000;
810}
811
812int omap_dispc_request_irq(void (*callback)(void *data), void *data)
813{
814 int r = 0;
815
816 BUG_ON(callback == NULL);
817
818 if (dispc.irq_callback)
819 r = -EBUSY;
820 else {
821 dispc.irq_callback = callback;
822 dispc.irq_callback_data = data;
823 }
824
825 return r;
826}
827EXPORT_SYMBOL(omap_dispc_request_irq);
828
829void omap_dispc_enable_irqs(int irq_mask)
830{
831 enable_lcd_clocks(1);
832 dispc.enabled_irqs = irq_mask;
833 irq_mask |= DISPC_IRQ_MASK_ERROR;
834 MOD_REG_FLD(DISPC_IRQENABLE, 0x7fff, irq_mask);
835 enable_lcd_clocks(0);
836}
837EXPORT_SYMBOL(omap_dispc_enable_irqs);
838
839void omap_dispc_disable_irqs(int irq_mask)
840{
841 enable_lcd_clocks(1);
842 dispc.enabled_irqs &= ~irq_mask;
843 irq_mask &= ~DISPC_IRQ_MASK_ERROR;
844 MOD_REG_FLD(DISPC_IRQENABLE, 0x7fff, irq_mask);
845 enable_lcd_clocks(0);
846}
847EXPORT_SYMBOL(omap_dispc_disable_irqs);
848
849void omap_dispc_free_irq(void)
850{
851 enable_lcd_clocks(1);
852 omap_dispc_disable_irqs(DISPC_IRQ_MASK_ALL);
853 dispc.irq_callback = NULL;
854 dispc.irq_callback_data = NULL;
855 enable_lcd_clocks(0);
856}
857EXPORT_SYMBOL(omap_dispc_free_irq);
858
859static irqreturn_t omap_dispc_irq_handler(int irq, void *dev)
860{
861 u32 stat = dispc_read_reg(DISPC_IRQSTATUS);
862
863 if (stat & DISPC_IRQ_FRAMEMASK)
864 complete(&dispc.frame_done);
865
866 if (stat & DISPC_IRQ_MASK_ERROR) {
867 if (printk_ratelimit()) {
868 dev_err(dispc.fbdev->dev, "irq error status %04x\n",
869 stat & 0x7fff);
870 }
871 }
872
873 if ((stat & dispc.enabled_irqs) && dispc.irq_callback)
874 dispc.irq_callback(dispc.irq_callback_data);
875
876 dispc_write_reg(DISPC_IRQSTATUS, stat);
877
878 return IRQ_HANDLED;
879}
880
881static int get_dss_clocks(void)
882{
005187ee
TL		 883 dispc.dss_ick = clk_get(dispc.fbdev->dev, "ick");
884 if (IS_ERR(dispc.dss_ick)) {
885 dev_err(dispc.fbdev->dev, "can't get ick\n");
7a055fc2
ID		 886 return PTR_ERR(dispc.dss_ick);
887 }
888
005187ee
TL		 889 dispc.dss1_fck = clk_get(dispc.fbdev->dev, "dss1_fck");
890 if (IS_ERR(dispc.dss1_fck)) {
898eb71c 891 dev_err(dispc.fbdev->dev, "can't get dss1_fck\n");
7a055fc2
ID		 892 clk_put(dispc.dss_ick);
893 return PTR_ERR(dispc.dss1_fck);
894 }
895
005187ee
TL		 896 dispc.dss_54m_fck = clk_get(dispc.fbdev->dev, "tv_fck");
897 if (IS_ERR(dispc.dss_54m_fck)) {
898 dev_err(dispc.fbdev->dev, "can't get tv_fck\n");
7a055fc2
ID		 899 clk_put(dispc.dss_ick);
900 clk_put(dispc.dss1_fck);
901 return PTR_ERR(dispc.dss_54m_fck);
902 }
903
904 return 0;
905}
906
907static void put_dss_clocks(void)
908{
909 clk_put(dispc.dss_54m_fck);
910 clk_put(dispc.dss1_fck);
911 clk_put(dispc.dss_ick);
912}
913
914static void enable_lcd_clocks(int enable)
915{
916 if (enable)
917 clk_enable(dispc.dss1_fck);
918 else
919 clk_disable(dispc.dss1_fck);
920}
921
922static void enable_interface_clocks(int enable)
923{
924 if (enable)
925 clk_enable(dispc.dss_ick);
926 else
927 clk_disable(dispc.dss_ick);
928}
929
930static void enable_digit_clocks(int enable)
931{
932 if (enable)
933 clk_enable(dispc.dss_54m_fck);
934 else
935 clk_disable(dispc.dss_54m_fck);
936}
937
938static void omap_dispc_suspend(void)
939{
940 if (dispc.update_mode == OMAPFB_AUTO_UPDATE) {
941 init_completion(&dispc.frame_done);
942 omap_dispc_enable_lcd_out(0);
943 if (!wait_for_completion_timeout(&dispc.frame_done,
944 msecs_to_jiffies(500))) {
945 dev_err(dispc.fbdev->dev,
946 "timeout waiting for FRAME DONE\n");
947 }
948 enable_lcd_clocks(0);
949 }
950}
951
952static void omap_dispc_resume(void)
953{
954 if (dispc.update_mode == OMAPFB_AUTO_UPDATE) {
955 enable_lcd_clocks(1);
956 if (!dispc.ext_mode) {
957 set_lcd_timings();
958 load_palette();
959 }
960 omap_dispc_enable_lcd_out(1);
961 }
962}
963
964
965static int omap_dispc_update_window(struct fb_info *fbi,
966 struct omapfb_update_window *win,
967 void (*complete_callback)(void *arg),
968 void *complete_callback_data)
969{
970 return dispc.update_mode == OMAPFB_UPDATE_DISABLED ? -ENODEV : 0;
971}
972
973static int mmap_kern(struct omapfb_mem_region *region)
974{
975 struct vm_struct *kvma;
976 struct vm_area_struct vma;
977 pgprot_t pgprot;
978 unsigned long vaddr;
979
980 kvma = get_vm_area(region->size, VM_IOREMAP);
981 if (kvma == NULL) {
982 dev_err(dispc.fbdev->dev, "can't get kernel vm area\n");
983 return -ENOMEM;
984 }
985 vma.vm_mm = &init_mm;
986
987 vaddr = (unsigned long)kvma->addr;
988
989 pgprot = pgprot_writecombine(pgprot_kernel);
990 vma.vm_start = vaddr;
991 vma.vm_end = vaddr + region->size;
992 if (io_remap_pfn_range(&vma, vaddr, region->paddr >> PAGE_SHIFT,
993 region->size, pgprot) < 0) {
994 dev_err(dispc.fbdev->dev, "kernel mmap for FBMEM failed\n");
995 return -EAGAIN;
996 }
997 region->vaddr = (void *)vaddr;
998
999 return 0;
1000}
1001
1002static void mmap_user_open(struct vm_area_struct *vma)
1003{
1004 int plane = (int)vma->vm_private_data;
1005
1006 atomic_inc(&dispc.map_count[plane]);
1007}
1008
1009static void mmap_user_close(struct vm_area_struct *vma)
1010{
1011 int plane = (int)vma->vm_private_data;
1012
1013 atomic_dec(&dispc.map_count[plane]);
1014}
1015
1016static struct vm_operations_struct mmap_user_ops = {
1017 .open = mmap_user_open,
1018 .close = mmap_user_close,
1019};
1020
1021static int omap_dispc_mmap_user(struct fb_info *info,
1022 struct vm_area_struct *vma)
1023{
1024 struct omapfb_plane_struct *plane = info->par;
1025 unsigned long off;
1026 unsigned long start;
1027 u32 len;
1028
1029 if (vma->vm_end - vma->vm_start == 0)
1030 return 0;
1031 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1032 return -EINVAL;
1033 off = vma->vm_pgoff << PAGE_SHIFT;
1034
1035 start = info->fix.smem_start;
1036 len = info->fix.smem_len;
1037 if (off >= len)
1038 return -EINVAL;
1039 if ((vma->vm_end - vma->vm_start + off) > len)
1040 return -EINVAL;
1041 off += start;
1042 vma->vm_pgoff = off >> PAGE_SHIFT;
1043 vma->vm_flags |= VM_IO | VM_RESERVED;
1044 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1045 vma->vm_ops = &mmap_user_ops;
1046 vma->vm_private_data = (void *)plane->idx;
1047 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1048 vma->vm_end - vma->vm_start, vma->vm_page_prot))
1049 return -EAGAIN;
1050 /* vm_ops.open won't be called for mmap itself. */
1051 atomic_inc(&dispc.map_count[plane->idx]);
1052 return 0;
1053}
1054
1055static void unmap_kern(struct omapfb_mem_region *region)
1056{
1057 vunmap(region->vaddr);
1058}
1059
1060static int alloc_palette_ram(void)
1061{
1062 dispc.palette_vaddr = dma_alloc_writecombine(dispc.fbdev->dev,
1063 MAX_PALETTE_SIZE, &dispc.palette_paddr, GFP_KERNEL);
1064 if (dispc.palette_vaddr == NULL) {
1065 dev_err(dispc.fbdev->dev, "failed to alloc palette memory\n");
1066 return -ENOMEM;
1067 }
1068
1069 return 0;
1070}
1071
1072static void free_palette_ram(void)
1073{
1074 dma_free_writecombine(dispc.fbdev->dev, MAX_PALETTE_SIZE,
1075 dispc.palette_vaddr, dispc.palette_paddr);
1076}
1077
1078static int alloc_fbmem(struct omapfb_mem_region *region)
1079{
1080 region->vaddr = dma_alloc_writecombine(dispc.fbdev->dev,
1081 region->size, &region->paddr, GFP_KERNEL);
1082
1083 if (region->vaddr == NULL) {
1084 dev_err(dispc.fbdev->dev, "unable to allocate FB DMA memory\n");
1085 return -ENOMEM;
1086 }
1087
1088 return 0;
1089}
1090
1091static void free_fbmem(struct omapfb_mem_region *region)
1092{
1093 dma_free_writecombine(dispc.fbdev->dev, region->size,
1094 region->vaddr, region->paddr);
1095}
1096
1097static struct resmap *init_resmap(unsigned long start, size_t size)
1098{
1099 unsigned page_cnt;
1100 struct resmap *res_map;
1101
1102 page_cnt = PAGE_ALIGN(size) / PAGE_SIZE;
1103 res_map =
1104 kzalloc(sizeof(struct resmap) + RESMAP_SIZE(page_cnt), GFP_KERNEL);
1105 if (res_map == NULL)
1106 return NULL;
1107 res_map->start = start;
1108 res_map->page_cnt = page_cnt;
1109 res_map->map = (unsigned long *)(res_map + 1);
1110 return res_map;
1111}
1112
1113static void cleanup_resmap(struct resmap *res_map)
1114{
1115 kfree(res_map);
1116}
1117
1118static inline int resmap_mem_type(unsigned long start)
1119{
1120 if (start >= OMAP2_SRAM_START &&
1121 start < OMAP2_SRAM_START + OMAP2_SRAM_SIZE)
1122 return OMAPFB_MEMTYPE_SRAM;
1123 else
1124 return OMAPFB_MEMTYPE_SDRAM;
1125}
1126
1127static inline int resmap_page_reserved(struct resmap *res_map, unsigned page_nr)
1128{
1129 return *RESMAP_PTR(res_map, page_nr) & RESMAP_MASK(page_nr) ? 1 : 0;
1130}
1131
1132static inline void resmap_reserve_page(struct resmap *res_map, unsigned page_nr)
1133{
1134 BUG_ON(resmap_page_reserved(res_map, page_nr));
1135 *RESMAP_PTR(res_map, page_nr) |= RESMAP_MASK(page_nr);
1136}
1137
1138static inline void resmap_free_page(struct resmap *res_map, unsigned page_nr)
1139{
1140 BUG_ON(!resmap_page_reserved(res_map, page_nr));
1141 *RESMAP_PTR(res_map, page_nr) &= ~RESMAP_MASK(page_nr);
1142}
1143
1144static void resmap_reserve_region(unsigned long start, size_t size)
1145{
1146
1147 struct resmap *res_map;
1148 unsigned start_page;
1149 unsigned end_page;
1150 int mtype;
1151 unsigned i;
1152
1153 mtype = resmap_mem_type(start);
1154 res_map = dispc.res_map[mtype];
1155 dev_dbg(dispc.fbdev->dev, "reserve mem type %d start %08lx size %d\n",
1156 mtype, start, size);
1157 start_page = (start - res_map->start) / PAGE_SIZE;
1158 end_page = start_page + PAGE_ALIGN(size) / PAGE_SIZE;
1159 for (i = start_page; i < end_page; i++)
1160 resmap_reserve_page(res_map, i);
1161}
1162
1163static void resmap_free_region(unsigned long start, size_t size)
1164{
1165 struct resmap *res_map;
1166 unsigned start_page;
1167 unsigned end_page;
1168 unsigned i;
1169 int mtype;
1170
1171 mtype = resmap_mem_type(start);
1172 res_map = dispc.res_map[mtype];
1173 dev_dbg(dispc.fbdev->dev, "free mem type %d start %08lx size %d\n",
1174 mtype, start, size);
1175 start_page = (start - res_map->start) / PAGE_SIZE;
1176 end_page = start_page + PAGE_ALIGN(size) / PAGE_SIZE;
1177 for (i = start_page; i < end_page; i++)
1178 resmap_free_page(res_map, i);
1179}
1180
1181static unsigned long resmap_alloc_region(int mtype, size_t size)
1182{
1183 unsigned i;
1184 unsigned total;
1185 unsigned start_page;
1186 unsigned long start;
1187 struct resmap *res_map = dispc.res_map[mtype];
1188
1189 BUG_ON(mtype >= DISPC_MEMTYPE_NUM || res_map == NULL || !size);
1190
1191 size = PAGE_ALIGN(size) / PAGE_SIZE;
1192 start_page = 0;
1193 total = 0;
1194 for (i = 0; i < res_map->page_cnt; i++) {
1195 if (resmap_page_reserved(res_map, i)) {
1196 start_page = i + 1;
1197 total = 0;
1198 } else if (++total == size)
1199 break;
1200 }
1201 if (total < size)
1202 return 0;
1203
1204 start = res_map->start + start_page * PAGE_SIZE;
1205 resmap_reserve_region(start, size * PAGE_SIZE);
1206
1207 return start;
1208}
1209
1210/* Note that this will only work for user mappings, we don't deal with
1211 * kernel mappings here, so fbcon will keep using the old region.
1212 */
1213static int omap_dispc_setup_mem(int plane, size_t size, int mem_type,
1214 unsigned long *paddr)
1215{
1216 struct omapfb_mem_region *rg;
1217 unsigned long new_addr = 0;
1218
1219 if ((unsigned)plane > dispc.mem_desc.region_cnt)
1220 return -EINVAL;
1221 if (mem_type >= DISPC_MEMTYPE_NUM)
1222 return -EINVAL;
1223 if (dispc.res_map[mem_type] == NULL)
1224 return -ENOMEM;
1225 rg = &dispc.mem_desc.region[plane];
1226 if (size == rg->size && mem_type == rg->type)
1227 return 0;
1228 if (atomic_read(&dispc.map_count[plane]))
1229 return -EBUSY;
1230 if (rg->size != 0)
1231 resmap_free_region(rg->paddr, rg->size);
1232 if (size != 0) {
1233 new_addr = resmap_alloc_region(mem_type, size);
1234 if (!new_addr) {
1235 /* Reallocate old region. */
1236 resmap_reserve_region(rg->paddr, rg->size);
1237 return -ENOMEM;
1238 }
1239 }
1240 rg->paddr = new_addr;
1241 rg->size = size;
1242 rg->type = mem_type;
1243
1244 *paddr = new_addr;
1245
1246 return 0;
1247}
1248
1249static int setup_fbmem(struct omapfb_mem_desc *req_md)
1250{
1251 struct omapfb_mem_region *rg;
1252 int i;
1253 int r;
1254 unsigned long mem_start[DISPC_MEMTYPE_NUM];
1255 unsigned long mem_end[DISPC_MEMTYPE_NUM];
1256
1257 if (!req_md->region_cnt) {
1258 dev_err(dispc.fbdev->dev, "no memory regions defined\n");
1259 return -ENOENT;
1260 }
1261
1262 rg = &req_md->region[0];
1263 memset(mem_start, 0xff, sizeof(mem_start));
1264 memset(mem_end, 0, sizeof(mem_end));
1265
1266 for (i = 0; i < req_md->region_cnt; i++, rg++) {
1267 int mtype;
1268 if (rg->paddr) {
1269 rg->alloc = 0;
1270 if (rg->vaddr == NULL) {
1271 rg->map = 1;
1272 if ((r = mmap_kern(rg)) < 0)
1273 return r;
1274 }
1275 } else {
1276 if (rg->type != OMAPFB_MEMTYPE_SDRAM) {
1277 dev_err(dispc.fbdev->dev,
1278 "unsupported memory type\n");
1279 return -EINVAL;
1280 }
1281 rg->alloc = rg->map = 1;
1282 if ((r = alloc_fbmem(rg)) < 0)
1283 return r;
1284 }
1285 mtype = rg->type;
1286
1287 if (rg->paddr < mem_start[mtype])
1288 mem_start[mtype] = rg->paddr;
1289 if (rg->paddr + rg->size > mem_end[mtype])
1290 mem_end[mtype] = rg->paddr + rg->size;
1291 }
1292
1293 for (i = 0; i < DISPC_MEMTYPE_NUM; i++) {
1294 unsigned long start;
1295 size_t size;
1296 if (mem_end[i] == 0)
1297 continue;
1298 start = mem_start[i];
1299 size = mem_end[i] - start;
1300 dispc.res_map[i] = init_resmap(start, size);
1301 r = -ENOMEM;
1302 if (dispc.res_map[i] == NULL)
1303 goto fail;
1304 /* Initial state is that everything is reserved. This
1305 * includes possible holes as well, which will never be
1306 * freed.
1307 */
1308 resmap_reserve_region(start, size);
1309 }
1310
1311 dispc.mem_desc = *req_md;
1312
1313 return 0;
1314fail:
1315 for (i = 0; i < DISPC_MEMTYPE_NUM; i++) {
1316 if (dispc.res_map[i] != NULL)
1317 cleanup_resmap(dispc.res_map[i]);
1318 }
1319 return r;
1320}
1321
1322static void cleanup_fbmem(void)
1323{
1324 struct omapfb_mem_region *rg;
1325 int i;
1326
1327 for (i = 0; i < DISPC_MEMTYPE_NUM; i++) {
1328 if (dispc.res_map[i] != NULL)
1329 cleanup_resmap(dispc.res_map[i]);
1330 }
1331 rg = &dispc.mem_desc.region[0];
1332 for (i = 0; i < dispc.mem_desc.region_cnt; i++, rg++) {
1333 if (rg->alloc)
1334 free_fbmem(rg);
1335 else {
1336 if (rg->map)
1337 unmap_kern(rg);
1338 }
1339 }
1340}
1341
1342static int omap_dispc_init(struct omapfb_device *fbdev, int ext_mode,
1343 struct omapfb_mem_desc *req_vram)
1344{
1345 int r;
1346 u32 l;
1347 struct lcd_panel *panel = fbdev->panel;
1348 int tmo = 10000;
1349 int skip_init = 0;
1350 int i;
1351
1352 memset(&dispc, 0, sizeof(dispc));
1353
55c381e4
RK		 1354 dispc.base = ioremap(DISPC_BASE, SZ_1K);
1355 if (!dispc.base) {
1356 dev_err(fbdev->dev, "can't ioremap DISPC\n");
1357 return -ENOMEM;
1358 }
1359
7a055fc2
ID		 1360 dispc.fbdev = fbdev;
1361 dispc.ext_mode = ext_mode;
1362
1363 init_completion(&dispc.frame_done);
1364
1365 if ((r = get_dss_clocks()) < 0)
55c381e4 1366 goto fail0;
7a055fc2
ID		 1367
1368 enable_interface_clocks(1);
1369 enable_lcd_clocks(1);
1370
1371#ifdef CONFIG_FB_OMAP_BOOTLOADER_INIT
1372 l = dispc_read_reg(DISPC_CONTROL);
1373 /* LCD enabled ? */
1374 if (l & 1) {
1375 pr_info("omapfb: skipping hardware initialization\n");
1376 skip_init = 1;
1377 }
1378#endif
1379
1380 if (!skip_init) {
1381 /* Reset monitoring works only w/ the 54M clk */
1382 enable_digit_clocks(1);
1383
1384 /* Soft reset */
1385 MOD_REG_FLD(DISPC_SYSCONFIG, 1 << 1, 1 << 1);
1386
1387 while (!(dispc_read_reg(DISPC_SYSSTATUS) & 1)) {
1388 if (!--tmo) {
1389 dev_err(dispc.fbdev->dev, "soft reset failed\n");
1390 r = -ENODEV;
1391 enable_digit_clocks(0);
1392 goto fail1;
1393 }
1394 }
1395
1396 enable_digit_clocks(0);
1397 }
1398
1399 /* Enable smart idle and autoidle */
1400 l = dispc_read_reg(DISPC_CONTROL);
1401 l &= ~((3 << 12) | (3 << 3));
1402 l |= (2 << 12) | (2 << 3) | (1 << 0);
1403 dispc_write_reg(DISPC_SYSCONFIG, l);
1404 omap_writel(1 << 0, DSS_BASE + DSS_SYSCONFIG);
1405
1406 /* Set functional clock autogating */
1407 l = dispc_read_reg(DISPC_CONFIG);
1408 l |= 1 << 9;
1409 dispc_write_reg(DISPC_CONFIG, l);
1410
1411 l = dispc_read_reg(DISPC_IRQSTATUS);
1412 dispc_write_reg(l, DISPC_IRQSTATUS);
1413
1414 /* Enable those that we handle always */
1415 omap_dispc_enable_irqs(DISPC_IRQ_FRAMEMASK);
1416
1417 if ((r = request_irq(INT_24XX_DSS_IRQ, omap_dispc_irq_handler,
1418 0, MODULE_NAME, fbdev)) < 0) {
1419 dev_err(dispc.fbdev->dev, "can't get DSS IRQ\n");
1420 goto fail1;
1421 }
1422
1423 /* L3 firewall setting: enable access to OCM RAM */
e8a91c95 1424 __raw_writel(0x402000b0, IO_ADDRESS(0x680050a0));
7a055fc2
ID		 1425
1426 if ((r = alloc_palette_ram()) < 0)
1427 goto fail2;
1428
1429 if ((r = setup_fbmem(req_vram)) < 0)
1430 goto fail3;
1431
1432 if (!skip_init) {
1433 for (i = 0; i < dispc.mem_desc.region_cnt; i++) {
1434 memset(dispc.mem_desc.region[i].vaddr, 0,
1435 dispc.mem_desc.region[i].size);
1436 }
1437
1438 /* Set logic clock to fck, pixel clock to fck/2 for now */
1439 MOD_REG_FLD(DISPC_DIVISOR, FLD_MASK(16, 8), 1 << 16);
1440 MOD_REG_FLD(DISPC_DIVISOR, FLD_MASK(0, 8), 2 << 0);
1441
1442 setup_plane_fifo(0, ext_mode);
1443 setup_plane_fifo(1, ext_mode);
1444 setup_plane_fifo(2, ext_mode);
1445
1446 setup_color_conv_coef();
1447
1448 set_lcd_tft_mode(panel->config & OMAP_LCDC_PANEL_TFT);
1449 set_load_mode(DISPC_LOAD_FRAME_ONLY);
1450
1451 if (!ext_mode) {
1452 set_lcd_data_lines(panel->data_lines);
1453 omap_dispc_set_lcd_size(panel->x_res, panel->y_res);
1454 set_lcd_timings();
1455 } else
1456 set_lcd_data_lines(panel->bpp);
1457 enable_rfbi_mode(ext_mode);
1458 }
1459
1460 l = dispc_read_reg(DISPC_REVISION);
1461 pr_info("omapfb: DISPC version %d.%d initialized\n",
1462 l >> 4 & 0x0f, l & 0x0f);
1463 enable_lcd_clocks(0);
1464
1465 return 0;
1466fail3:
1467 free_palette_ram();
1468fail2:
1469 free_irq(INT_24XX_DSS_IRQ, fbdev);
1470fail1:
1471 enable_lcd_clocks(0);
1472 enable_interface_clocks(0);
1473 put_dss_clocks();
55c381e4
RK		 1474fail0:
1475 iounmap(dispc.base);
7a055fc2
ID		 1476 return r;
1477}
1478
1479static void omap_dispc_cleanup(void)
1480{
1481 int i;
1482
1483 omap_dispc_set_update_mode(OMAPFB_UPDATE_DISABLED);
1484 /* This will also disable clocks that are on */
1485 for (i = 0; i < dispc.mem_desc.region_cnt; i++)
1486 omap_dispc_enable_plane(i, 0);
1487 cleanup_fbmem();
1488 free_palette_ram();
1489 free_irq(INT_24XX_DSS_IRQ, dispc.fbdev);
1490 enable_interface_clocks(0);
1491 put_dss_clocks();
55c381e4 1492 iounmap(dispc.base);
7a055fc2
ID		 1493}
1494
1495const struct lcd_ctrl omap2_int_ctrl = {
1496 .name = "internal",
1497 .init = omap_dispc_init,
1498 .cleanup = omap_dispc_cleanup,
1499 .get_caps = omap_dispc_get_caps,
1500 .set_update_mode = omap_dispc_set_update_mode,
1501 .get_update_mode = omap_dispc_get_update_mode,
1502 .update_window = omap_dispc_update_window,
1503 .suspend = omap_dispc_suspend,
1504 .resume = omap_dispc_resume,
1505 .setup_plane = omap_dispc_setup_plane,
1506 .setup_mem = omap_dispc_setup_mem,
1507 .set_scale = omap_dispc_set_scale,
1508 .enable_plane = omap_dispc_enable_plane,
1509 .set_color_key = omap_dispc_set_color_key,
1510 .get_color_key = omap_dispc_get_color_key,
1511 .mmap = omap_dispc_mmap_user,
1512};
Linux 6.x block layer and io_uring tree(s)