1 /*
2 * linux/drivers/video/omap2/dss/dispc.c
3 *
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #define DSS_SUBSYS_NAME "DISPC"
24
25 #include <linux/kernel.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/vmalloc.h>
28 #include <linux/export.h>
29 #include <linux/clk.h>
30 #include <linux/io.h>
31 #include <linux/jiffies.h>
32 #include <linux/seq_file.h>
33 #include <linux/delay.h>
34 #include <linux/workqueue.h>
35 #include <linux/hardirq.h>
36 #include <linux/platform_device.h>
37 #include <linux/pm_runtime.h>
38 #include <linux/sizes.h>
39
40 #include <video/omapdss.h>
41
42 #include "dss.h"
43 #include "dss_features.h"
44 #include "dispc.h"
45
46 /* DISPC */
47 #define DISPC_SZ_REGS SZ_4K
48
49 enum omap_burst_size {
50 BURST_SIZE_X2 = 0,
51 BURST_SIZE_X4 = 1,
52 BURST_SIZE_X8 = 2,
53 };
54
55 #define REG_GET(idx, start, end) \
56 FLD_GET(dispc_read_reg(idx), start, end)
57
58 #define REG_FLD_MOD(idx, val, start, end) \
59 dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end))
60
61 struct dispc_features {
62 u8 sw_start;
63 u8 fp_start;
64 u8 bp_start;
65 u16 sw_max;
66 u16 vp_max;
67 u16 hp_max;
68 u8 mgr_width_start;
69 u8 mgr_height_start;
70 u16 mgr_width_max;
71 u16 mgr_height_max;
72 unsigned long max_lcd_pclk;
73 unsigned long max_tv_pclk;
74 int (*calc_scaling) (unsigned long pclk, unsigned long lclk,
75 const struct omap_video_timings *mgr_timings,
76 u16 width, u16 height, u16 out_width, u16 out_height,
77 enum omap_color_mode color_mode, bool *five_taps,
78 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
79 u16 pos_x, unsigned long *core_clk, bool mem_to_mem);
80 unsigned long (*calc_core_clk) (unsigned long pclk,
81 u16 width, u16 height, u16 out_width, u16 out_height,
82 bool mem_to_mem);
83 u8 num_fifos;
84
85 /* swap GFX & WB fifos */
86 bool gfx_fifo_workaround:1;
87
88 /* no DISPC_IRQ_FRAMEDONETV on this SoC */
89 bool no_framedone_tv:1;
90
91 /* revert to the OMAP4 mechanism of DISPC Smart Standby operation */
92 bool mstandby_workaround:1;
93
94 bool set_max_preload:1;
95 };
96
97 #define DISPC_MAX_NR_FIFOS 5
98
99 static struct {
100 struct platform_device *pdev;
101 void __iomem *base;
102
103 int irq;
104 irq_handler_t user_handler;
105 void *user_data;
106
107 unsigned long core_clk_rate;
108 unsigned long tv_pclk_rate;
109
110 u32 fifo_size[DISPC_MAX_NR_FIFOS];
111 /* maps which plane is using a fifo. fifo-id -> plane-id */
112 int fifo_assignment[DISPC_MAX_NR_FIFOS];
113
114 bool ctx_valid;
115 u32 ctx[DISPC_SZ_REGS / sizeof(u32)];
116
117 const struct dispc_features *feat;
118
119 bool is_enabled;
120 } dispc;
121
122 enum omap_color_component {
123 /* used for all color formats for OMAP3 and earlier
124 * and for RGB and Y color component on OMAP4
125 */
126 DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0,
127 /* used for UV component for
128 * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12
129 * color formats on OMAP4
130 */
131 DISPC_COLOR_COMPONENT_UV = 1 << 1,
132 };
133
134 enum mgr_reg_fields {
135 DISPC_MGR_FLD_ENABLE,
136 DISPC_MGR_FLD_STNTFT,
137 DISPC_MGR_FLD_GO,
138 DISPC_MGR_FLD_TFTDATALINES,
139 DISPC_MGR_FLD_STALLMODE,
140 DISPC_MGR_FLD_TCKENABLE,
141 DISPC_MGR_FLD_TCKSELECTION,
142 DISPC_MGR_FLD_CPR,
143 DISPC_MGR_FLD_FIFOHANDCHECK,
144 /* used to maintain a count of the above fields */
145 DISPC_MGR_FLD_NUM,
146 };
147
148 struct dispc_reg_field {
149 u16 reg;
150 u8 high;
151 u8 low;
152 };
153
154 static const struct {
155 const char *name;
156 u32 vsync_irq;
157 u32 framedone_irq;
158 u32 sync_lost_irq;
159 struct dispc_reg_field reg_desc[DISPC_MGR_FLD_NUM];
160 } mgr_desc[] = {
161 [OMAP_DSS_CHANNEL_LCD] = {
162 .name = "LCD",
163 .vsync_irq = DISPC_IRQ_VSYNC,
164 .framedone_irq = DISPC_IRQ_FRAMEDONE,
165 .sync_lost_irq = DISPC_IRQ_SYNC_LOST,
166 .reg_desc = {
167 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 },
168 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 },
169 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 },
170 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 },
171 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 },
172 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 },
173 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 },
174 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 },
175 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
176 },
177 },
178 [OMAP_DSS_CHANNEL_DIGIT] = {
179 .name = "DIGIT",
180 .vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN,
181 .framedone_irq = DISPC_IRQ_FRAMEDONETV,
182 .sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT,
183 .reg_desc = {
184 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 },
185 [DISPC_MGR_FLD_STNTFT] = { },
186 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 },
187 [DISPC_MGR_FLD_TFTDATALINES] = { },
188 [DISPC_MGR_FLD_STALLMODE] = { },
189 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 },
190 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 },
191 [DISPC_MGR_FLD_CPR] = { },
192 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
193 },
194 },
195 [OMAP_DSS_CHANNEL_LCD2] = {
196 .name = "LCD2",
197 .vsync_irq = DISPC_IRQ_VSYNC2,
198 .framedone_irq = DISPC_IRQ_FRAMEDONE2,
199 .sync_lost_irq = DISPC_IRQ_SYNC_LOST2,
200 .reg_desc = {
201 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 },
202 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 },
203 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 },
204 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 },
205 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 },
206 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 },
207 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 },
208 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 },
209 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 },
210 },
211 },
212 [OMAP_DSS_CHANNEL_LCD3] = {
213 .name = "LCD3",
214 .vsync_irq = DISPC_IRQ_VSYNC3,
215 .framedone_irq = DISPC_IRQ_FRAMEDONE3,
216 .sync_lost_irq = DISPC_IRQ_SYNC_LOST3,
217 .reg_desc = {
218 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 },
219 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 },
220 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 },
221 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 },
222 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 },
223 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 },
224 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 },
225 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 },
226 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 },
227 },
228 },
229 };
230
231 struct color_conv_coef {
232 int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb;
233 int full_range;
234 };
235
236 static unsigned long dispc_plane_pclk_rate(enum omap_plane plane);
237 static unsigned long dispc_plane_lclk_rate(enum omap_plane plane);
238
dispc_write_reg(const u16 idx,u32 val)239 static inline void dispc_write_reg(const u16 idx, u32 val)
240 {
241 __raw_writel(val, dispc.base + idx);
242 }
243
dispc_read_reg(const u16 idx)244 static inline u32 dispc_read_reg(const u16 idx)
245 {
246 return __raw_readl(dispc.base + idx);
247 }
248
mgr_fld_read(enum omap_channel channel,enum mgr_reg_fields regfld)249 static u32 mgr_fld_read(enum omap_channel channel, enum mgr_reg_fields regfld)
250 {
251 const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld];
252 return REG_GET(rfld.reg, rfld.high, rfld.low);
253 }
254
mgr_fld_write(enum omap_channel channel,enum mgr_reg_fields regfld,int val)255 static void mgr_fld_write(enum omap_channel channel,
256 enum mgr_reg_fields regfld, int val) {
257 const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld];
258 REG_FLD_MOD(rfld.reg, val, rfld.high, rfld.low);
259 }
260
261 #define SR(reg) \
262 dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
263 #define RR(reg) \
264 dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)])
265
dispc_save_context(void)266 static void dispc_save_context(void)
267 {
268 int i, j;
269
270 DSSDBG("dispc_save_context\n");
271
272 SR(IRQENABLE);
273 SR(CONTROL);
274 SR(CONFIG);
275 SR(LINE_NUMBER);
276 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
277 dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
278 SR(GLOBAL_ALPHA);
279 if (dss_has_feature(FEAT_MGR_LCD2)) {
280 SR(CONTROL2);
281 SR(CONFIG2);
282 }
283 if (dss_has_feature(FEAT_MGR_LCD3)) {
284 SR(CONTROL3);
285 SR(CONFIG3);
286 }
287
288 for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
289 SR(DEFAULT_COLOR(i));
290 SR(TRANS_COLOR(i));
291 SR(SIZE_MGR(i));
292 if (i == OMAP_DSS_CHANNEL_DIGIT)
293 continue;
294 SR(TIMING_H(i));
295 SR(TIMING_V(i));
296 SR(POL_FREQ(i));
297 SR(DIVISORo(i));
298
299 SR(DATA_CYCLE1(i));
300 SR(DATA_CYCLE2(i));
301 SR(DATA_CYCLE3(i));
302
303 if (dss_has_feature(FEAT_CPR)) {
304 SR(CPR_COEF_R(i));
305 SR(CPR_COEF_G(i));
306 SR(CPR_COEF_B(i));
307 }
308 }
309
310 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
311 SR(OVL_BA0(i));
312 SR(OVL_BA1(i));
313 SR(OVL_POSITION(i));
314 SR(OVL_SIZE(i));
315 SR(OVL_ATTRIBUTES(i));
316 SR(OVL_FIFO_THRESHOLD(i));
317 SR(OVL_ROW_INC(i));
318 SR(OVL_PIXEL_INC(i));
319 if (dss_has_feature(FEAT_PRELOAD))
320 SR(OVL_PRELOAD(i));
321 if (i == OMAP_DSS_GFX) {
322 SR(OVL_WINDOW_SKIP(i));
323 SR(OVL_TABLE_BA(i));
324 continue;
325 }
326 SR(OVL_FIR(i));
327 SR(OVL_PICTURE_SIZE(i));
328 SR(OVL_ACCU0(i));
329 SR(OVL_ACCU1(i));
330
331 for (j = 0; j < 8; j++)
332 SR(OVL_FIR_COEF_H(i, j));
333
334 for (j = 0; j < 8; j++)
335 SR(OVL_FIR_COEF_HV(i, j));
336
337 for (j = 0; j < 5; j++)
338 SR(OVL_CONV_COEF(i, j));
339
340 if (dss_has_feature(FEAT_FIR_COEF_V)) {
341 for (j = 0; j < 8; j++)
342 SR(OVL_FIR_COEF_V(i, j));
343 }
344
345 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
346 SR(OVL_BA0_UV(i));
347 SR(OVL_BA1_UV(i));
348 SR(OVL_FIR2(i));
349 SR(OVL_ACCU2_0(i));
350 SR(OVL_ACCU2_1(i));
351
352 for (j = 0; j < 8; j++)
353 SR(OVL_FIR_COEF_H2(i, j));
354
355 for (j = 0; j < 8; j++)
356 SR(OVL_FIR_COEF_HV2(i, j));
357
358 for (j = 0; j < 8; j++)
359 SR(OVL_FIR_COEF_V2(i, j));
360 }
361 if (dss_has_feature(FEAT_ATTR2))
362 SR(OVL_ATTRIBUTES2(i));
363 }
364
365 if (dss_has_feature(FEAT_CORE_CLK_DIV))
366 SR(DIVISOR);
367
368 dispc.ctx_valid = true;
369
370 DSSDBG("context saved\n");
371 }
372
dispc_restore_context(void)373 static void dispc_restore_context(void)
374 {
375 int i, j;
376
377 DSSDBG("dispc_restore_context\n");
378
379 if (!dispc.ctx_valid)
380 return;
381
382 /*RR(IRQENABLE);*/
383 /*RR(CONTROL);*/
384 RR(CONFIG);
385 RR(LINE_NUMBER);
386 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
387 dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
388 RR(GLOBAL_ALPHA);
389 if (dss_has_feature(FEAT_MGR_LCD2))
390 RR(CONFIG2);
391 if (dss_has_feature(FEAT_MGR_LCD3))
392 RR(CONFIG3);
393
394 for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
395 RR(DEFAULT_COLOR(i));
396 RR(TRANS_COLOR(i));
397 RR(SIZE_MGR(i));
398 if (i == OMAP_DSS_CHANNEL_DIGIT)
399 continue;
400 RR(TIMING_H(i));
401 RR(TIMING_V(i));
402 RR(POL_FREQ(i));
403 RR(DIVISORo(i));
404
405 RR(DATA_CYCLE1(i));
406 RR(DATA_CYCLE2(i));
407 RR(DATA_CYCLE3(i));
408
409 if (dss_has_feature(FEAT_CPR)) {
410 RR(CPR_COEF_R(i));
411 RR(CPR_COEF_G(i));
412 RR(CPR_COEF_B(i));
413 }
414 }
415
416 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
417 RR(OVL_BA0(i));
418 RR(OVL_BA1(i));
419 RR(OVL_POSITION(i));
420 RR(OVL_SIZE(i));
421 RR(OVL_ATTRIBUTES(i));
422 RR(OVL_FIFO_THRESHOLD(i));
423 RR(OVL_ROW_INC(i));
424 RR(OVL_PIXEL_INC(i));
425 if (dss_has_feature(FEAT_PRELOAD))
426 RR(OVL_PRELOAD(i));
427 if (i == OMAP_DSS_GFX) {
428 RR(OVL_WINDOW_SKIP(i));
429 RR(OVL_TABLE_BA(i));
430 continue;
431 }
432 RR(OVL_FIR(i));
433 RR(OVL_PICTURE_SIZE(i));
434 RR(OVL_ACCU0(i));
435 RR(OVL_ACCU1(i));
436
437 for (j = 0; j < 8; j++)
438 RR(OVL_FIR_COEF_H(i, j));
439
440 for (j = 0; j < 8; j++)
441 RR(OVL_FIR_COEF_HV(i, j));
442
443 for (j = 0; j < 5; j++)
444 RR(OVL_CONV_COEF(i, j));
445
446 if (dss_has_feature(FEAT_FIR_COEF_V)) {
447 for (j = 0; j < 8; j++)
448 RR(OVL_FIR_COEF_V(i, j));
449 }
450
451 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
452 RR(OVL_BA0_UV(i));
453 RR(OVL_BA1_UV(i));
454 RR(OVL_FIR2(i));
455 RR(OVL_ACCU2_0(i));
456 RR(OVL_ACCU2_1(i));
457
458 for (j = 0; j < 8; j++)
459 RR(OVL_FIR_COEF_H2(i, j));
460
461 for (j = 0; j < 8; j++)
462 RR(OVL_FIR_COEF_HV2(i, j));
463
464 for (j = 0; j < 8; j++)
465 RR(OVL_FIR_COEF_V2(i, j));
466 }
467 if (dss_has_feature(FEAT_ATTR2))
468 RR(OVL_ATTRIBUTES2(i));
469 }
470
471 if (dss_has_feature(FEAT_CORE_CLK_DIV))
472 RR(DIVISOR);
473
474 /* enable last, because LCD & DIGIT enable are here */
475 RR(CONTROL);
476 if (dss_has_feature(FEAT_MGR_LCD2))
477 RR(CONTROL2);
478 if (dss_has_feature(FEAT_MGR_LCD3))
479 RR(CONTROL3);
480 /* clear spurious SYNC_LOST_DIGIT interrupts */
481 dispc_clear_irqstatus(DISPC_IRQ_SYNC_LOST_DIGIT);
482
483 /*
484 * enable last so IRQs won't trigger before
485 * the context is fully restored
486 */
487 RR(IRQENABLE);
488
489 DSSDBG("context restored\n");
490 }
491
492 #undef SR
493 #undef RR
494
dispc_runtime_get(void)495 int dispc_runtime_get(void)
496 {
497 int r;
498
499 DSSDBG("dispc_runtime_get\n");
500
501 r = pm_runtime_get_sync(&dispc.pdev->dev);
502 WARN_ON(r < 0);
503 return r < 0 ? r : 0;
504 }
505 EXPORT_SYMBOL(dispc_runtime_get);
506
dispc_runtime_put(void)507 void dispc_runtime_put(void)
508 {
509 int r;
510
511 DSSDBG("dispc_runtime_put\n");
512
513 r = pm_runtime_put_sync(&dispc.pdev->dev);
514 WARN_ON(r < 0 && r != -ENOSYS);
515 }
516 EXPORT_SYMBOL(dispc_runtime_put);
517
dispc_mgr_get_vsync_irq(enum omap_channel channel)518 u32 dispc_mgr_get_vsync_irq(enum omap_channel channel)
519 {
520 return mgr_desc[channel].vsync_irq;
521 }
522 EXPORT_SYMBOL(dispc_mgr_get_vsync_irq);
523
dispc_mgr_get_framedone_irq(enum omap_channel channel)524 u32 dispc_mgr_get_framedone_irq(enum omap_channel channel)
525 {
526 if (channel == OMAP_DSS_CHANNEL_DIGIT && dispc.feat->no_framedone_tv)
527 return 0;
528
529 return mgr_desc[channel].framedone_irq;
530 }
531 EXPORT_SYMBOL(dispc_mgr_get_framedone_irq);
532
dispc_mgr_get_sync_lost_irq(enum omap_channel channel)533 u32 dispc_mgr_get_sync_lost_irq(enum omap_channel channel)
534 {
535 return mgr_desc[channel].sync_lost_irq;
536 }
537 EXPORT_SYMBOL(dispc_mgr_get_sync_lost_irq);
538
dispc_wb_get_framedone_irq(void)539 u32 dispc_wb_get_framedone_irq(void)
540 {
541 return DISPC_IRQ_FRAMEDONEWB;
542 }
543
dispc_mgr_go_busy(enum omap_channel channel)544 bool dispc_mgr_go_busy(enum omap_channel channel)
545 {
546 return mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1;
547 }
548 EXPORT_SYMBOL(dispc_mgr_go_busy);
549
dispc_mgr_go(enum omap_channel channel)550 void dispc_mgr_go(enum omap_channel channel)
551 {
552 WARN_ON(dispc_mgr_is_enabled(channel) == false);
553 WARN_ON(dispc_mgr_go_busy(channel));
554
555 DSSDBG("GO %s\n", mgr_desc[channel].name);
556
557 mgr_fld_write(channel, DISPC_MGR_FLD_GO, 1);
558 }
559 EXPORT_SYMBOL(dispc_mgr_go);
560
dispc_wb_go_busy(void)561 bool dispc_wb_go_busy(void)
562 {
563 return REG_GET(DISPC_CONTROL2, 6, 6) == 1;
564 }
565
dispc_wb_go(void)566 void dispc_wb_go(void)
567 {
568 enum omap_plane plane = OMAP_DSS_WB;
569 bool enable, go;
570
571 enable = REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0) == 1;
572
573 if (!enable)
574 return;
575
576 go = REG_GET(DISPC_CONTROL2, 6, 6) == 1;
577 if (go) {
578 DSSERR("GO bit not down for WB\n");
579 return;
580 }
581
582 REG_FLD_MOD(DISPC_CONTROL2, 1, 6, 6);
583 }
584
dispc_ovl_write_firh_reg(enum omap_plane plane,int reg,u32 value)585 static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value)
586 {
587 dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value);
588 }
589
dispc_ovl_write_firhv_reg(enum omap_plane plane,int reg,u32 value)590 static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
591 {
592 dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value);
593 }
594
dispc_ovl_write_firv_reg(enum omap_plane plane,int reg,u32 value)595 static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value)
596 {
597 dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value);
598 }
599
dispc_ovl_write_firh2_reg(enum omap_plane plane,int reg,u32 value)600 static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value)
601 {
602 BUG_ON(plane == OMAP_DSS_GFX);
603
604 dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value);
605 }
606
dispc_ovl_write_firhv2_reg(enum omap_plane plane,int reg,u32 value)607 static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg,
608 u32 value)
609 {
610 BUG_ON(plane == OMAP_DSS_GFX);
611
612 dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
613 }
614
dispc_ovl_write_firv2_reg(enum omap_plane plane,int reg,u32 value)615 static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value)
616 {
617 BUG_ON(plane == OMAP_DSS_GFX);
618
619 dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value);
620 }
621
dispc_ovl_set_scale_coef(enum omap_plane plane,int fir_hinc,int fir_vinc,int five_taps,enum omap_color_component color_comp)622 static void dispc_ovl_set_scale_coef(enum omap_plane plane, int fir_hinc,
623 int fir_vinc, int five_taps,
624 enum omap_color_component color_comp)
625 {
626 const struct dispc_coef *h_coef, *v_coef;
627 int i;
628
629 h_coef = dispc_ovl_get_scale_coef(fir_hinc, true);
630 v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps);
631
632 for (i = 0; i < 8; i++) {
633 u32 h, hv;
634
635 h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0)
636 | FLD_VAL(h_coef[i].hc1_vc0, 15, 8)
637 | FLD_VAL(h_coef[i].hc2_vc1, 23, 16)
638 | FLD_VAL(h_coef[i].hc3_vc2, 31, 24);
639 hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0)
640 | FLD_VAL(v_coef[i].hc1_vc0, 15, 8)
641 | FLD_VAL(v_coef[i].hc2_vc1, 23, 16)
642 | FLD_VAL(v_coef[i].hc3_vc2, 31, 24);
643
644 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
645 dispc_ovl_write_firh_reg(plane, i, h);
646 dispc_ovl_write_firhv_reg(plane, i, hv);
647 } else {
648 dispc_ovl_write_firh2_reg(plane, i, h);
649 dispc_ovl_write_firhv2_reg(plane, i, hv);
650 }
651
652 }
653
654 if (five_taps) {
655 for (i = 0; i < 8; i++) {
656 u32 v;
657 v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0)
658 | FLD_VAL(v_coef[i].hc4_vc22, 15, 8);
659 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
660 dispc_ovl_write_firv_reg(plane, i, v);
661 else
662 dispc_ovl_write_firv2_reg(plane, i, v);
663 }
664 }
665 }
666
667
dispc_ovl_write_color_conv_coef(enum omap_plane plane,const struct color_conv_coef * ct)668 static void dispc_ovl_write_color_conv_coef(enum omap_plane plane,
669 const struct color_conv_coef *ct)
670 {
671 #define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
672
673 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry));
674 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb));
675 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr));
676 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by));
677 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb));
678
679 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11);
680
681 #undef CVAL
682 }
683
dispc_setup_color_conv_coef(void)684 static void dispc_setup_color_conv_coef(void)
685 {
686 int i;
687 int num_ovl = dss_feat_get_num_ovls();
688 int num_wb = dss_feat_get_num_wbs();
689 const struct color_conv_coef ctbl_bt601_5_ovl = {
690 298, 409, 0, 298, -208, -100, 298, 0, 517, 0,
691 };
692 const struct color_conv_coef ctbl_bt601_5_wb = {
693 66, 112, -38, 129, -94, -74, 25, -18, 112, 0,
694 };
695
696 for (i = 1; i < num_ovl; i++)
697 dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_ovl);
698
699 for (; i < num_wb; i++)
700 dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_wb);
701 }
702
dispc_ovl_set_ba0(enum omap_plane plane,u32 paddr)703 static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr)
704 {
705 dispc_write_reg(DISPC_OVL_BA0(plane), paddr);
706 }
707
dispc_ovl_set_ba1(enum omap_plane plane,u32 paddr)708 static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr)
709 {
710 dispc_write_reg(DISPC_OVL_BA1(plane), paddr);
711 }
712
dispc_ovl_set_ba0_uv(enum omap_plane plane,u32 paddr)713 static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr)
714 {
715 dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr);
716 }
717
dispc_ovl_set_ba1_uv(enum omap_plane plane,u32 paddr)718 static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr)
719 {
720 dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr);
721 }
722
dispc_ovl_set_pos(enum omap_plane plane,enum omap_overlay_caps caps,int x,int y)723 static void dispc_ovl_set_pos(enum omap_plane plane,
724 enum omap_overlay_caps caps, int x, int y)
725 {
726 u32 val;
727
728 if ((caps & OMAP_DSS_OVL_CAP_POS) == 0)
729 return;
730
731 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
732
733 dispc_write_reg(DISPC_OVL_POSITION(plane), val);
734 }
735
dispc_ovl_set_input_size(enum omap_plane plane,int width,int height)736 static void dispc_ovl_set_input_size(enum omap_plane plane, int width,
737 int height)
738 {
739 u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
740
741 if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB)
742 dispc_write_reg(DISPC_OVL_SIZE(plane), val);
743 else
744 dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
745 }
746
dispc_ovl_set_output_size(enum omap_plane plane,int width,int height)747 static void dispc_ovl_set_output_size(enum omap_plane plane, int width,
748 int height)
749 {
750 u32 val;
751
752 BUG_ON(plane == OMAP_DSS_GFX);
753
754 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
755
756 if (plane == OMAP_DSS_WB)
757 dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
758 else
759 dispc_write_reg(DISPC_OVL_SIZE(plane), val);
760 }
761
dispc_ovl_set_zorder(enum omap_plane plane,enum omap_overlay_caps caps,u8 zorder)762 static void dispc_ovl_set_zorder(enum omap_plane plane,
763 enum omap_overlay_caps caps, u8 zorder)
764 {
765 if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
766 return;
767
768 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
769 }
770
dispc_ovl_enable_zorder_planes(void)771 static void dispc_ovl_enable_zorder_planes(void)
772 {
773 int i;
774
775 if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
776 return;
777
778 for (i = 0; i < dss_feat_get_num_ovls(); i++)
779 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
780 }
781
dispc_ovl_set_pre_mult_alpha(enum omap_plane plane,enum omap_overlay_caps caps,bool enable)782 static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane,
783 enum omap_overlay_caps caps, bool enable)
784 {
785 if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
786 return;
787
788 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
789 }
790
dispc_ovl_setup_global_alpha(enum omap_plane plane,enum omap_overlay_caps caps,u8 global_alpha)791 static void dispc_ovl_setup_global_alpha(enum omap_plane plane,
792 enum omap_overlay_caps caps, u8 global_alpha)
793 {
794 static const unsigned shifts[] = { 0, 8, 16, 24, };
795 int shift;
796
797 if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
798 return;
799
800 shift = shifts[plane];
801 REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
802 }
803
dispc_ovl_set_pix_inc(enum omap_plane plane,s32 inc)804 static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc)
805 {
806 dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc);
807 }
808
dispc_ovl_set_row_inc(enum omap_plane plane,s32 inc)809 static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc)
810 {
811 dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc);
812 }
813
dispc_ovl_set_color_mode(enum omap_plane plane,enum omap_color_mode color_mode)814 static void dispc_ovl_set_color_mode(enum omap_plane plane,
815 enum omap_color_mode color_mode)
816 {
817 u32 m = 0;
818 if (plane != OMAP_DSS_GFX) {
819 switch (color_mode) {
820 case OMAP_DSS_COLOR_NV12:
821 m = 0x0; break;
822 case OMAP_DSS_COLOR_RGBX16:
823 m = 0x1; break;
824 case OMAP_DSS_COLOR_RGBA16:
825 m = 0x2; break;
826 case OMAP_DSS_COLOR_RGB12U:
827 m = 0x4; break;
828 case OMAP_DSS_COLOR_ARGB16:
829 m = 0x5; break;
830 case OMAP_DSS_COLOR_RGB16:
831 m = 0x6; break;
832 case OMAP_DSS_COLOR_ARGB16_1555:
833 m = 0x7; break;
834 case OMAP_DSS_COLOR_RGB24U:
835 m = 0x8; break;
836 case OMAP_DSS_COLOR_RGB24P:
837 m = 0x9; break;
838 case OMAP_DSS_COLOR_YUV2:
839 m = 0xa; break;
840 case OMAP_DSS_COLOR_UYVY:
841 m = 0xb; break;
842 case OMAP_DSS_COLOR_ARGB32:
843 m = 0xc; break;
844 case OMAP_DSS_COLOR_RGBA32:
845 m = 0xd; break;
846 case OMAP_DSS_COLOR_RGBX32:
847 m = 0xe; break;
848 case OMAP_DSS_COLOR_XRGB16_1555:
849 m = 0xf; break;
850 default:
851 BUG(); return;
852 }
853 } else {
854 switch (color_mode) {
855 case OMAP_DSS_COLOR_CLUT1:
856 m = 0x0; break;
857 case OMAP_DSS_COLOR_CLUT2:
858 m = 0x1; break;
859 case OMAP_DSS_COLOR_CLUT4:
860 m = 0x2; break;
861 case OMAP_DSS_COLOR_CLUT8:
862 m = 0x3; break;
863 case OMAP_DSS_COLOR_RGB12U:
864 m = 0x4; break;
865 case OMAP_DSS_COLOR_ARGB16:
866 m = 0x5; break;
867 case OMAP_DSS_COLOR_RGB16:
868 m = 0x6; break;
869 case OMAP_DSS_COLOR_ARGB16_1555:
870 m = 0x7; break;
871 case OMAP_DSS_COLOR_RGB24U:
872 m = 0x8; break;
873 case OMAP_DSS_COLOR_RGB24P:
874 m = 0x9; break;
875 case OMAP_DSS_COLOR_RGBX16:
876 m = 0xa; break;
877 case OMAP_DSS_COLOR_RGBA16:
878 m = 0xb; break;
879 case OMAP_DSS_COLOR_ARGB32:
880 m = 0xc; break;
881 case OMAP_DSS_COLOR_RGBA32:
882 m = 0xd; break;
883 case OMAP_DSS_COLOR_RGBX32:
884 m = 0xe; break;
885 case OMAP_DSS_COLOR_XRGB16_1555:
886 m = 0xf; break;
887 default:
888 BUG(); return;
889 }
890 }
891
892 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
893 }
894
dispc_ovl_configure_burst_type(enum omap_plane plane,enum omap_dss_rotation_type rotation_type)895 static void dispc_ovl_configure_burst_type(enum omap_plane plane,
896 enum omap_dss_rotation_type rotation_type)
897 {
898 if (dss_has_feature(FEAT_BURST_2D) == 0)
899 return;
900
901 if (rotation_type == OMAP_DSS_ROT_TILER)
902 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29);
903 else
904 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29);
905 }
906
dispc_ovl_set_channel_out(enum omap_plane plane,enum omap_channel channel)907 void dispc_ovl_set_channel_out(enum omap_plane plane, enum omap_channel channel)
908 {
909 int shift;
910 u32 val;
911 int chan = 0, chan2 = 0;
912
913 switch (plane) {
914 case OMAP_DSS_GFX:
915 shift = 8;
916 break;
917 case OMAP_DSS_VIDEO1:
918 case OMAP_DSS_VIDEO2:
919 case OMAP_DSS_VIDEO3:
920 shift = 16;
921 break;
922 default:
923 BUG();
924 return;
925 }
926
927 val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
928 if (dss_has_feature(FEAT_MGR_LCD2)) {
929 switch (channel) {
930 case OMAP_DSS_CHANNEL_LCD:
931 chan = 0;
932 chan2 = 0;
933 break;
934 case OMAP_DSS_CHANNEL_DIGIT:
935 chan = 1;
936 chan2 = 0;
937 break;
938 case OMAP_DSS_CHANNEL_LCD2:
939 chan = 0;
940 chan2 = 1;
941 break;
942 case OMAP_DSS_CHANNEL_LCD3:
943 if (dss_has_feature(FEAT_MGR_LCD3)) {
944 chan = 0;
945 chan2 = 2;
946 } else {
947 BUG();
948 return;
949 }
950 break;
951 default:
952 BUG();
953 return;
954 }
955
956 val = FLD_MOD(val, chan, shift, shift);
957 val = FLD_MOD(val, chan2, 31, 30);
958 } else {
959 val = FLD_MOD(val, channel, shift, shift);
960 }
961 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
962 }
963 EXPORT_SYMBOL(dispc_ovl_set_channel_out);
964
dispc_ovl_get_channel_out(enum omap_plane plane)965 static enum omap_channel dispc_ovl_get_channel_out(enum omap_plane plane)
966 {
967 int shift;
968 u32 val;
969 enum omap_channel channel;
970
971 switch (plane) {
972 case OMAP_DSS_GFX:
973 shift = 8;
974 break;
975 case OMAP_DSS_VIDEO1:
976 case OMAP_DSS_VIDEO2:
977 case OMAP_DSS_VIDEO3:
978 shift = 16;
979 break;
980 default:
981 BUG();
982 return 0;
983 }
984
985 val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
986
987 if (dss_has_feature(FEAT_MGR_LCD3)) {
988 if (FLD_GET(val, 31, 30) == 0)
989 channel = FLD_GET(val, shift, shift);
990 else if (FLD_GET(val, 31, 30) == 1)
991 channel = OMAP_DSS_CHANNEL_LCD2;
992 else
993 channel = OMAP_DSS_CHANNEL_LCD3;
994 } else if (dss_has_feature(FEAT_MGR_LCD2)) {
995 if (FLD_GET(val, 31, 30) == 0)
996 channel = FLD_GET(val, shift, shift);
997 else
998 channel = OMAP_DSS_CHANNEL_LCD2;
999 } else {
1000 channel = FLD_GET(val, shift, shift);
1001 }
1002
1003 return channel;
1004 }
1005
dispc_wb_set_channel_in(enum dss_writeback_channel channel)1006 void dispc_wb_set_channel_in(enum dss_writeback_channel channel)
1007 {
1008 enum omap_plane plane = OMAP_DSS_WB;
1009
1010 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), channel, 18, 16);
1011 }
1012
dispc_ovl_set_burst_size(enum omap_plane plane,enum omap_burst_size burst_size)1013 static void dispc_ovl_set_burst_size(enum omap_plane plane,
1014 enum omap_burst_size burst_size)
1015 {
1016 static const unsigned shifts[] = { 6, 14, 14, 14, 14, };
1017 int shift;
1018
1019 shift = shifts[plane];
1020 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift);
1021 }
1022
dispc_configure_burst_sizes(void)1023 static void dispc_configure_burst_sizes(void)
1024 {
1025 int i;
1026 const int burst_size = BURST_SIZE_X8;
1027
1028 /* Configure burst size always to maximum size */
1029 for (i = 0; i < dss_feat_get_num_ovls(); ++i)
1030 dispc_ovl_set_burst_size(i, burst_size);
1031 }
1032
dispc_ovl_get_burst_size(enum omap_plane plane)1033 static u32 dispc_ovl_get_burst_size(enum omap_plane plane)
1034 {
1035 unsigned unit = dss_feat_get_burst_size_unit();
1036 /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
1037 return unit * 8;
1038 }
1039
dispc_enable_gamma_table(bool enable)1040 void dispc_enable_gamma_table(bool enable)
1041 {
1042 /*
1043 * This is partially implemented to support only disabling of
1044 * the gamma table.
1045 */
1046 if (enable) {
1047 DSSWARN("Gamma table enabling for TV not yet supported");
1048 return;
1049 }
1050
1051 REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
1052 }
1053
dispc_mgr_enable_cpr(enum omap_channel channel,bool enable)1054 static void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable)
1055 {
1056 if (channel == OMAP_DSS_CHANNEL_DIGIT)
1057 return;
1058
1059 mgr_fld_write(channel, DISPC_MGR_FLD_CPR, enable);
1060 }
1061
dispc_mgr_set_cpr_coef(enum omap_channel channel,const struct omap_dss_cpr_coefs * coefs)1062 static void dispc_mgr_set_cpr_coef(enum omap_channel channel,
1063 const struct omap_dss_cpr_coefs *coefs)
1064 {
1065 u32 coef_r, coef_g, coef_b;
1066
1067 if (!dss_mgr_is_lcd(channel))
1068 return;
1069
1070 coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
1071 FLD_VAL(coefs->rb, 9, 0);
1072 coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
1073 FLD_VAL(coefs->gb, 9, 0);
1074 coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
1075 FLD_VAL(coefs->bb, 9, 0);
1076
1077 dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
1078 dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
1079 dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
1080 }
1081
dispc_ovl_set_vid_color_conv(enum omap_plane plane,bool enable)1082 static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable)
1083 {
1084 u32 val;
1085
1086 BUG_ON(plane == OMAP_DSS_GFX);
1087
1088 val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1089 val = FLD_MOD(val, enable, 9, 9);
1090 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
1091 }
1092
dispc_ovl_enable_replication(enum omap_plane plane,enum omap_overlay_caps caps,bool enable)1093 static void dispc_ovl_enable_replication(enum omap_plane plane,
1094 enum omap_overlay_caps caps, bool enable)
1095 {
1096 static const unsigned shifts[] = { 5, 10, 10, 10 };
1097 int shift;
1098
1099 if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0)
1100 return;
1101
1102 shift = shifts[plane];
1103 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
1104 }
1105
dispc_mgr_set_size(enum omap_channel channel,u16 width,u16 height)1106 static void dispc_mgr_set_size(enum omap_channel channel, u16 width,
1107 u16 height)
1108 {
1109 u32 val;
1110
1111 val = FLD_VAL(height - 1, dispc.feat->mgr_height_start, 16) |
1112 FLD_VAL(width - 1, dispc.feat->mgr_width_start, 0);
1113
1114 dispc_write_reg(DISPC_SIZE_MGR(channel), val);
1115 }
1116
dispc_init_fifos(void)1117 static void dispc_init_fifos(void)
1118 {
1119 u32 size;
1120 int fifo;
1121 u8 start, end;
1122 u32 unit;
1123
1124 unit = dss_feat_get_buffer_size_unit();
1125
1126 dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
1127
1128 for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
1129 size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(fifo), start, end);
1130 size *= unit;
1131 dispc.fifo_size[fifo] = size;
1132
1133 /*
1134 * By default fifos are mapped directly to overlays, fifo 0 to
1135 * ovl 0, fifo 1 to ovl 1, etc.
1136 */
1137 dispc.fifo_assignment[fifo] = fifo;
1138 }
1139
1140 /*
1141 * The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo
1142 * causes problems with certain use cases, like using the tiler in 2D
1143 * mode. The below hack swaps the fifos of GFX and WB planes, thus
1144 * giving GFX plane a larger fifo. WB but should work fine with a
1145 * smaller fifo.
1146 */
1147 if (dispc.feat->gfx_fifo_workaround) {
1148 u32 v;
1149
1150 v = dispc_read_reg(DISPC_GLOBAL_BUFFER);
1151
1152 v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */
1153 v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */
1154 v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */
1155 v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */
1156
1157 dispc_write_reg(DISPC_GLOBAL_BUFFER, v);
1158
1159 dispc.fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB;
1160 dispc.fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX;
1161 }
1162 }
1163
dispc_ovl_get_fifo_size(enum omap_plane plane)1164 static u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
1165 {
1166 int fifo;
1167 u32 size = 0;
1168
1169 for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
1170 if (dispc.fifo_assignment[fifo] == plane)
1171 size += dispc.fifo_size[fifo];
1172 }
1173
1174 return size;
1175 }
1176
dispc_ovl_set_fifo_threshold(enum omap_plane plane,u32 low,u32 high)1177 void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high)
1178 {
1179 u8 hi_start, hi_end, lo_start, lo_end;
1180 u32 unit;
1181
1182 unit = dss_feat_get_buffer_size_unit();
1183
1184 WARN_ON(low % unit != 0);
1185 WARN_ON(high % unit != 0);
1186
1187 low /= unit;
1188 high /= unit;
1189
1190 dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
1191 dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
1192
1193 DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n",
1194 plane,
1195 REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1196 lo_start, lo_end) * unit,
1197 REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1198 hi_start, hi_end) * unit,
1199 low * unit, high * unit);
1200
1201 dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane),
1202 FLD_VAL(high, hi_start, hi_end) |
1203 FLD_VAL(low, lo_start, lo_end));
1204
1205 /*
1206 * configure the preload to the pipeline's high threhold, if HT it's too
1207 * large for the preload field, set the threshold to the maximum value
1208 * that can be held by the preload register
1209 */
1210 if (dss_has_feature(FEAT_PRELOAD) && dispc.feat->set_max_preload &&
1211 plane != OMAP_DSS_WB)
1212 dispc_write_reg(DISPC_OVL_PRELOAD(plane), min(high, 0xfffu));
1213 }
1214 EXPORT_SYMBOL(dispc_ovl_set_fifo_threshold);
1215
dispc_enable_fifomerge(bool enable)1216 void dispc_enable_fifomerge(bool enable)
1217 {
1218 if (!dss_has_feature(FEAT_FIFO_MERGE)) {
1219 WARN_ON(enable);
1220 return;
1221 }
1222
1223 DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
1224 REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
1225 }
1226
dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,u32 * fifo_low,u32 * fifo_high,bool use_fifomerge,bool manual_update)1227 void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
1228 u32 *fifo_low, u32 *fifo_high, bool use_fifomerge,
1229 bool manual_update)
1230 {
1231 /*
1232 * All sizes are in bytes. Both the buffer and burst are made of
1233 * buffer_units, and the fifo thresholds must be buffer_unit aligned.
1234 */
1235
1236 unsigned buf_unit = dss_feat_get_buffer_size_unit();
1237 unsigned ovl_fifo_size, total_fifo_size, burst_size;
1238 int i;
1239
1240 burst_size = dispc_ovl_get_burst_size(plane);
1241 ovl_fifo_size = dispc_ovl_get_fifo_size(plane);
1242
1243 if (use_fifomerge) {
1244 total_fifo_size = 0;
1245 for (i = 0; i < dss_feat_get_num_ovls(); ++i)
1246 total_fifo_size += dispc_ovl_get_fifo_size(i);
1247 } else {
1248 total_fifo_size = ovl_fifo_size;
1249 }
1250
1251 /*
1252 * We use the same low threshold for both fifomerge and non-fifomerge
1253 * cases, but for fifomerge we calculate the high threshold using the
1254 * combined fifo size
1255 */
1256
1257 if (manual_update && dss_has_feature(FEAT_OMAP3_DSI_FIFO_BUG)) {
1258 *fifo_low = ovl_fifo_size - burst_size * 2;
1259 *fifo_high = total_fifo_size - burst_size;
1260 } else if (plane == OMAP_DSS_WB) {
1261 /*
1262 * Most optimal configuration for writeback is to push out data
1263 * to the interconnect the moment writeback pushes enough pixels
1264 * in the FIFO to form a burst
1265 */
1266 *fifo_low = 0;
1267 *fifo_high = burst_size;
1268 } else {
1269 *fifo_low = ovl_fifo_size - burst_size;
1270 *fifo_high = total_fifo_size - buf_unit;
1271 }
1272 }
1273 EXPORT_SYMBOL(dispc_ovl_compute_fifo_thresholds);
1274
dispc_ovl_set_fir(enum omap_plane plane,int hinc,int vinc,enum omap_color_component color_comp)1275 static void dispc_ovl_set_fir(enum omap_plane plane,
1276 int hinc, int vinc,
1277 enum omap_color_component color_comp)
1278 {
1279 u32 val;
1280
1281 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
1282 u8 hinc_start, hinc_end, vinc_start, vinc_end;
1283
1284 dss_feat_get_reg_field(FEAT_REG_FIRHINC,
1285 &hinc_start, &hinc_end);
1286 dss_feat_get_reg_field(FEAT_REG_FIRVINC,
1287 &vinc_start, &vinc_end);
1288 val = FLD_VAL(vinc, vinc_start, vinc_end) |
1289 FLD_VAL(hinc, hinc_start, hinc_end);
1290
1291 dispc_write_reg(DISPC_OVL_FIR(plane), val);
1292 } else {
1293 val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
1294 dispc_write_reg(DISPC_OVL_FIR2(plane), val);
1295 }
1296 }
1297
dispc_ovl_set_vid_accu0(enum omap_plane plane,int haccu,int vaccu)1298 static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
1299 {
1300 u32 val;
1301 u8 hor_start, hor_end, vert_start, vert_end;
1302
1303 dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1304 dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1305
1306 val = FLD_VAL(vaccu, vert_start, vert_end) |
1307 FLD_VAL(haccu, hor_start, hor_end);
1308
1309 dispc_write_reg(DISPC_OVL_ACCU0(plane), val);
1310 }
1311
dispc_ovl_set_vid_accu1(enum omap_plane plane,int haccu,int vaccu)1312 static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
1313 {
1314 u32 val;
1315 u8 hor_start, hor_end, vert_start, vert_end;
1316
1317 dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1318 dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1319
1320 val = FLD_VAL(vaccu, vert_start, vert_end) |
1321 FLD_VAL(haccu, hor_start, hor_end);
1322
1323 dispc_write_reg(DISPC_OVL_ACCU1(plane), val);
1324 }
1325
dispc_ovl_set_vid_accu2_0(enum omap_plane plane,int haccu,int vaccu)1326 static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu,
1327 int vaccu)
1328 {
1329 u32 val;
1330
1331 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1332 dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val);
1333 }
1334
dispc_ovl_set_vid_accu2_1(enum omap_plane plane,int haccu,int vaccu)1335 static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu,
1336 int vaccu)
1337 {
1338 u32 val;
1339
1340 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1341 dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val);
1342 }
1343
dispc_ovl_set_scale_param(enum omap_plane plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool five_taps,u8 rotation,enum omap_color_component color_comp)1344 static void dispc_ovl_set_scale_param(enum omap_plane plane,
1345 u16 orig_width, u16 orig_height,
1346 u16 out_width, u16 out_height,
1347 bool five_taps, u8 rotation,
1348 enum omap_color_component color_comp)
1349 {
1350 int fir_hinc, fir_vinc;
1351
1352 fir_hinc = 1024 * orig_width / out_width;
1353 fir_vinc = 1024 * orig_height / out_height;
1354
1355 dispc_ovl_set_scale_coef(plane, fir_hinc, fir_vinc, five_taps,
1356 color_comp);
1357 dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp);
1358 }
1359
dispc_ovl_set_accu_uv(enum omap_plane plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,enum omap_color_mode color_mode,u8 rotation)1360 static void dispc_ovl_set_accu_uv(enum omap_plane plane,
1361 u16 orig_width, u16 orig_height, u16 out_width, u16 out_height,
1362 bool ilace, enum omap_color_mode color_mode, u8 rotation)
1363 {
1364 int h_accu2_0, h_accu2_1;
1365 int v_accu2_0, v_accu2_1;
1366 int chroma_hinc, chroma_vinc;
1367 int idx;
1368
1369 struct accu {
1370 s8 h0_m, h0_n;
1371 s8 h1_m, h1_n;
1372 s8 v0_m, v0_n;
1373 s8 v1_m, v1_n;
1374 };
1375
1376 const struct accu *accu_table;
1377 const struct accu *accu_val;
1378
1379 static const struct accu accu_nv12[4] = {
1380 { 0, 1, 0, 1 , -1, 2, 0, 1 },
1381 { 1, 2, -3, 4 , 0, 1, 0, 1 },
1382 { -1, 1, 0, 1 , -1, 2, 0, 1 },
1383 { -1, 2, -1, 2 , -1, 1, 0, 1 },
1384 };
1385
1386 static const struct accu accu_nv12_ilace[4] = {
1387 { 0, 1, 0, 1 , -3, 4, -1, 4 },
1388 { -1, 4, -3, 4 , 0, 1, 0, 1 },
1389 { -1, 1, 0, 1 , -1, 4, -3, 4 },
1390 { -3, 4, -3, 4 , -1, 1, 0, 1 },
1391 };
1392
1393 static const struct accu accu_yuv[4] = {
1394 { 0, 1, 0, 1, 0, 1, 0, 1 },
1395 { 0, 1, 0, 1, 0, 1, 0, 1 },
1396 { -1, 1, 0, 1, 0, 1, 0, 1 },
1397 { 0, 1, 0, 1, -1, 1, 0, 1 },
1398 };
1399
1400 switch (rotation) {
1401 case OMAP_DSS_ROT_0:
1402 idx = 0;
1403 break;
1404 case OMAP_DSS_ROT_90:
1405 idx = 1;
1406 break;
1407 case OMAP_DSS_ROT_180:
1408 idx = 2;
1409 break;
1410 case OMAP_DSS_ROT_270:
1411 idx = 3;
1412 break;
1413 default:
1414 BUG();
1415 return;
1416 }
1417
1418 switch (color_mode) {
1419 case OMAP_DSS_COLOR_NV12:
1420 if (ilace)
1421 accu_table = accu_nv12_ilace;
1422 else
1423 accu_table = accu_nv12;
1424 break;
1425 case OMAP_DSS_COLOR_YUV2:
1426 case OMAP_DSS_COLOR_UYVY:
1427 accu_table = accu_yuv;
1428 break;
1429 default:
1430 BUG();
1431 return;
1432 }
1433
1434 accu_val = &accu_table[idx];
1435
1436 chroma_hinc = 1024 * orig_width / out_width;
1437 chroma_vinc = 1024 * orig_height / out_height;
1438
1439 h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024;
1440 h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024;
1441 v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024;
1442 v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024;
1443
1444 dispc_ovl_set_vid_accu2_0(plane, h_accu2_0, v_accu2_0);
1445 dispc_ovl_set_vid_accu2_1(plane, h_accu2_1, v_accu2_1);
1446 }
1447
dispc_ovl_set_scaling_common(enum omap_plane plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,bool five_taps,bool fieldmode,enum omap_color_mode color_mode,u8 rotation)1448 static void dispc_ovl_set_scaling_common(enum omap_plane plane,
1449 u16 orig_width, u16 orig_height,
1450 u16 out_width, u16 out_height,
1451 bool ilace, bool five_taps,
1452 bool fieldmode, enum omap_color_mode color_mode,
1453 u8 rotation)
1454 {
1455 int accu0 = 0;
1456 int accu1 = 0;
1457 u32 l;
1458
1459 dispc_ovl_set_scale_param(plane, orig_width, orig_height,
1460 out_width, out_height, five_taps,
1461 rotation, DISPC_COLOR_COMPONENT_RGB_Y);
1462 l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1463
1464 /* RESIZEENABLE and VERTICALTAPS */
1465 l &= ~((0x3 << 5) | (0x1 << 21));
1466 l |= (orig_width != out_width) ? (1 << 5) : 0;
1467 l |= (orig_height != out_height) ? (1 << 6) : 0;
1468 l |= five_taps ? (1 << 21) : 0;
1469
1470 /* VRESIZECONF and HRESIZECONF */
1471 if (dss_has_feature(FEAT_RESIZECONF)) {
1472 l &= ~(0x3 << 7);
1473 l |= (orig_width <= out_width) ? 0 : (1 << 7);
1474 l |= (orig_height <= out_height) ? 0 : (1 << 8);
1475 }
1476
1477 /* LINEBUFFERSPLIT */
1478 if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) {
1479 l &= ~(0x1 << 22);
1480 l |= five_taps ? (1 << 22) : 0;
1481 }
1482
1483 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
1484
1485 /*
1486 * field 0 = even field = bottom field
1487 * field 1 = odd field = top field
1488 */
1489 if (ilace && !fieldmode) {
1490 accu1 = 0;
1491 accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
1492 if (accu0 >= 1024/2) {
1493 accu1 = 1024/2;
1494 accu0 -= accu1;
1495 }
1496 }
1497
1498 dispc_ovl_set_vid_accu0(plane, 0, accu0);
1499 dispc_ovl_set_vid_accu1(plane, 0, accu1);
1500 }
1501
dispc_ovl_set_scaling_uv(enum omap_plane plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,bool five_taps,bool fieldmode,enum omap_color_mode color_mode,u8 rotation)1502 static void dispc_ovl_set_scaling_uv(enum omap_plane plane,
1503 u16 orig_width, u16 orig_height,
1504 u16 out_width, u16 out_height,
1505 bool ilace, bool five_taps,
1506 bool fieldmode, enum omap_color_mode color_mode,
1507 u8 rotation)
1508 {
1509 int scale_x = out_width != orig_width;
1510 int scale_y = out_height != orig_height;
1511 bool chroma_upscale = plane != OMAP_DSS_WB ? true : false;
1512
1513 if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE))
1514 return;
1515 if ((color_mode != OMAP_DSS_COLOR_YUV2 &&
1516 color_mode != OMAP_DSS_COLOR_UYVY &&
1517 color_mode != OMAP_DSS_COLOR_NV12)) {
1518 /* reset chroma resampling for RGB formats */
1519 if (plane != OMAP_DSS_WB)
1520 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8);
1521 return;
1522 }
1523
1524 dispc_ovl_set_accu_uv(plane, orig_width, orig_height, out_width,
1525 out_height, ilace, color_mode, rotation);
1526
1527 switch (color_mode) {
1528 case OMAP_DSS_COLOR_NV12:
1529 if (chroma_upscale) {
1530 /* UV is subsampled by 2 horizontally and vertically */
1531 orig_height >>= 1;
1532 orig_width >>= 1;
1533 } else {
1534 /* UV is downsampled by 2 horizontally and vertically */
1535 orig_height <<= 1;
1536 orig_width <<= 1;
1537 }
1538
1539 break;
1540 case OMAP_DSS_COLOR_YUV2:
1541 case OMAP_DSS_COLOR_UYVY:
1542 /* For YUV422 with 90/270 rotation, we don't upsample chroma */
1543 if (rotation == OMAP_DSS_ROT_0 ||
1544 rotation == OMAP_DSS_ROT_180) {
1545 if (chroma_upscale)
1546 /* UV is subsampled by 2 horizontally */
1547 orig_width >>= 1;
1548 else
1549 /* UV is downsampled by 2 horizontally */
1550 orig_width <<= 1;
1551 }
1552
1553 /* must use FIR for YUV422 if rotated */
1554 if (rotation != OMAP_DSS_ROT_0)
1555 scale_x = scale_y = true;
1556
1557 break;
1558 default:
1559 BUG();
1560 return;
1561 }
1562
1563 if (out_width != orig_width)
1564 scale_x = true;
1565 if (out_height != orig_height)
1566 scale_y = true;
1567
1568 dispc_ovl_set_scale_param(plane, orig_width, orig_height,
1569 out_width, out_height, five_taps,
1570 rotation, DISPC_COLOR_COMPONENT_UV);
1571
1572 if (plane != OMAP_DSS_WB)
1573 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane),
1574 (scale_x || scale_y) ? 1 : 0, 8, 8);
1575
1576 /* set H scaling */
1577 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
1578 /* set V scaling */
1579 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
1580 }
1581
dispc_ovl_set_scaling(enum omap_plane plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,bool five_taps,bool fieldmode,enum omap_color_mode color_mode,u8 rotation)1582 static void dispc_ovl_set_scaling(enum omap_plane plane,
1583 u16 orig_width, u16 orig_height,
1584 u16 out_width, u16 out_height,
1585 bool ilace, bool five_taps,
1586 bool fieldmode, enum omap_color_mode color_mode,
1587 u8 rotation)
1588 {
1589 BUG_ON(plane == OMAP_DSS_GFX);
1590
1591 dispc_ovl_set_scaling_common(plane,
1592 orig_width, orig_height,
1593 out_width, out_height,
1594 ilace, five_taps,
1595 fieldmode, color_mode,
1596 rotation);
1597
1598 dispc_ovl_set_scaling_uv(plane,
1599 orig_width, orig_height,
1600 out_width, out_height,
1601 ilace, five_taps,
1602 fieldmode, color_mode,
1603 rotation);
1604 }
1605
dispc_ovl_set_rotation_attrs(enum omap_plane plane,u8 rotation,enum omap_dss_rotation_type rotation_type,bool mirroring,enum omap_color_mode color_mode)1606 static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation,
1607 enum omap_dss_rotation_type rotation_type,
1608 bool mirroring, enum omap_color_mode color_mode)
1609 {
1610 bool row_repeat = false;
1611 int vidrot = 0;
1612
1613 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1614 color_mode == OMAP_DSS_COLOR_UYVY) {
1615
1616 if (mirroring) {
1617 switch (rotation) {
1618 case OMAP_DSS_ROT_0:
1619 vidrot = 2;
1620 break;
1621 case OMAP_DSS_ROT_90:
1622 vidrot = 1;
1623 break;
1624 case OMAP_DSS_ROT_180:
1625 vidrot = 0;
1626 break;
1627 case OMAP_DSS_ROT_270:
1628 vidrot = 3;
1629 break;
1630 }
1631 } else {
1632 switch (rotation) {
1633 case OMAP_DSS_ROT_0:
1634 vidrot = 0;
1635 break;
1636 case OMAP_DSS_ROT_90:
1637 vidrot = 1;
1638 break;
1639 case OMAP_DSS_ROT_180:
1640 vidrot = 2;
1641 break;
1642 case OMAP_DSS_ROT_270:
1643 vidrot = 3;
1644 break;
1645 }
1646 }
1647
1648 if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
1649 row_repeat = true;
1650 else
1651 row_repeat = false;
1652 }
1653
1654 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
1655 if (dss_has_feature(FEAT_ROWREPEATENABLE))
1656 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane),
1657 row_repeat ? 1 : 0, 18, 18);
1658
1659 if (color_mode == OMAP_DSS_COLOR_NV12) {
1660 bool doublestride = (rotation_type == OMAP_DSS_ROT_TILER) &&
1661 (rotation == OMAP_DSS_ROT_0 ||
1662 rotation == OMAP_DSS_ROT_180);
1663 /* DOUBLESTRIDE */
1664 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), doublestride, 22, 22);
1665 }
1666
1667 }
1668
color_mode_to_bpp(enum omap_color_mode color_mode)1669 static int color_mode_to_bpp(enum omap_color_mode color_mode)
1670 {
1671 switch (color_mode) {
1672 case OMAP_DSS_COLOR_CLUT1:
1673 return 1;
1674 case OMAP_DSS_COLOR_CLUT2:
1675 return 2;
1676 case OMAP_DSS_COLOR_CLUT4:
1677 return 4;
1678 case OMAP_DSS_COLOR_CLUT8:
1679 case OMAP_DSS_COLOR_NV12:
1680 return 8;
1681 case OMAP_DSS_COLOR_RGB12U:
1682 case OMAP_DSS_COLOR_RGB16:
1683 case OMAP_DSS_COLOR_ARGB16:
1684 case OMAP_DSS_COLOR_YUV2:
1685 case OMAP_DSS_COLOR_UYVY:
1686 case OMAP_DSS_COLOR_RGBA16:
1687 case OMAP_DSS_COLOR_RGBX16:
1688 case OMAP_DSS_COLOR_ARGB16_1555:
1689 case OMAP_DSS_COLOR_XRGB16_1555:
1690 return 16;
1691 case OMAP_DSS_COLOR_RGB24P:
1692 return 24;
1693 case OMAP_DSS_COLOR_RGB24U:
1694 case OMAP_DSS_COLOR_ARGB32:
1695 case OMAP_DSS_COLOR_RGBA32:
1696 case OMAP_DSS_COLOR_RGBX32:
1697 return 32;
1698 default:
1699 BUG();
1700 return 0;
1701 }
1702 }
1703
pixinc(int pixels,u8 ps)1704 static s32 pixinc(int pixels, u8 ps)
1705 {
1706 if (pixels == 1)
1707 return 1;
1708 else if (pixels > 1)
1709 return 1 + (pixels - 1) * ps;
1710 else if (pixels < 0)
1711 return 1 - (-pixels + 1) * ps;
1712 else
1713 BUG();
1714 return 0;
1715 }
1716
calc_vrfb_rotation_offset(u8 rotation,bool mirror,u16 screen_width,u16 width,u16 height,enum omap_color_mode color_mode,bool fieldmode,unsigned int field_offset,unsigned * offset0,unsigned * offset1,s32 * row_inc,s32 * pix_inc,int x_predecim,int y_predecim)1717 static void calc_vrfb_rotation_offset(u8 rotation, bool mirror,
1718 u16 screen_width,
1719 u16 width, u16 height,
1720 enum omap_color_mode color_mode, bool fieldmode,
1721 unsigned int field_offset,
1722 unsigned *offset0, unsigned *offset1,
1723 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
1724 {
1725 u8 ps;
1726
1727 /* FIXME CLUT formats */
1728 switch (color_mode) {
1729 case OMAP_DSS_COLOR_CLUT1:
1730 case OMAP_DSS_COLOR_CLUT2:
1731 case OMAP_DSS_COLOR_CLUT4:
1732 case OMAP_DSS_COLOR_CLUT8:
1733 BUG();
1734 return;
1735 case OMAP_DSS_COLOR_YUV2:
1736 case OMAP_DSS_COLOR_UYVY:
1737 ps = 4;
1738 break;
1739 default:
1740 ps = color_mode_to_bpp(color_mode) / 8;
1741 break;
1742 }
1743
1744 DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1745 width, height);
1746
1747 /*
1748 * field 0 = even field = bottom field
1749 * field 1 = odd field = top field
1750 */
1751 switch (rotation + mirror * 4) {
1752 case OMAP_DSS_ROT_0:
1753 case OMAP_DSS_ROT_180:
1754 /*
1755 * If the pixel format is YUV or UYVY divide the width
1756 * of the image by 2 for 0 and 180 degree rotation.
1757 */
1758 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1759 color_mode == OMAP_DSS_COLOR_UYVY)
1760 width = width >> 1;
1761 case OMAP_DSS_ROT_90:
1762 case OMAP_DSS_ROT_270:
1763 *offset1 = 0;
1764 if (field_offset)
1765 *offset0 = field_offset * screen_width * ps;
1766 else
1767 *offset0 = 0;
1768
1769 *row_inc = pixinc(1 +
1770 (y_predecim * screen_width - x_predecim * width) +
1771 (fieldmode ? screen_width : 0), ps);
1772 *pix_inc = pixinc(x_predecim, ps);
1773 break;
1774
1775 case OMAP_DSS_ROT_0 + 4:
1776 case OMAP_DSS_ROT_180 + 4:
1777 /* If the pixel format is YUV or UYVY divide the width
1778 * of the image by 2 for 0 degree and 180 degree
1779 */
1780 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1781 color_mode == OMAP_DSS_COLOR_UYVY)
1782 width = width >> 1;
1783 case OMAP_DSS_ROT_90 + 4:
1784 case OMAP_DSS_ROT_270 + 4:
1785 *offset1 = 0;
1786 if (field_offset)
1787 *offset0 = field_offset * screen_width * ps;
1788 else
1789 *offset0 = 0;
1790 *row_inc = pixinc(1 -
1791 (y_predecim * screen_width + x_predecim * width) -
1792 (fieldmode ? screen_width : 0), ps);
1793 *pix_inc = pixinc(x_predecim, ps);
1794 break;
1795
1796 default:
1797 BUG();
1798 return;
1799 }
1800 }
1801
calc_dma_rotation_offset(u8 rotation,bool mirror,u16 screen_width,u16 width,u16 height,enum omap_color_mode color_mode,bool fieldmode,unsigned int field_offset,unsigned * offset0,unsigned * offset1,s32 * row_inc,s32 * pix_inc,int x_predecim,int y_predecim)1802 static void calc_dma_rotation_offset(u8 rotation, bool mirror,
1803 u16 screen_width,
1804 u16 width, u16 height,
1805 enum omap_color_mode color_mode, bool fieldmode,
1806 unsigned int field_offset,
1807 unsigned *offset0, unsigned *offset1,
1808 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
1809 {
1810 u8 ps;
1811 u16 fbw, fbh;
1812
1813 /* FIXME CLUT formats */
1814 switch (color_mode) {
1815 case OMAP_DSS_COLOR_CLUT1:
1816 case OMAP_DSS_COLOR_CLUT2:
1817 case OMAP_DSS_COLOR_CLUT4:
1818 case OMAP_DSS_COLOR_CLUT8:
1819 BUG();
1820 return;
1821 default:
1822 ps = color_mode_to_bpp(color_mode) / 8;
1823 break;
1824 }
1825
1826 DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1827 width, height);
1828
1829 /* width & height are overlay sizes, convert to fb sizes */
1830
1831 if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) {
1832 fbw = width;
1833 fbh = height;
1834 } else {
1835 fbw = height;
1836 fbh = width;
1837 }
1838
1839 /*
1840 * field 0 = even field = bottom field
1841 * field 1 = odd field = top field
1842 */
1843 switch (rotation + mirror * 4) {
1844 case OMAP_DSS_ROT_0:
1845 *offset1 = 0;
1846 if (field_offset)
1847 *offset0 = *offset1 + field_offset * screen_width * ps;
1848 else
1849 *offset0 = *offset1;
1850 *row_inc = pixinc(1 +
1851 (y_predecim * screen_width - fbw * x_predecim) +
1852 (fieldmode ? screen_width : 0), ps);
1853 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1854 color_mode == OMAP_DSS_COLOR_UYVY)
1855 *pix_inc = pixinc(x_predecim, 2 * ps);
1856 else
1857 *pix_inc = pixinc(x_predecim, ps);
1858 break;
1859 case OMAP_DSS_ROT_90:
1860 *offset1 = screen_width * (fbh - 1) * ps;
1861 if (field_offset)
1862 *offset0 = *offset1 + field_offset * ps;
1863 else
1864 *offset0 = *offset1;
1865 *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) +
1866 y_predecim + (fieldmode ? 1 : 0), ps);
1867 *pix_inc = pixinc(-x_predecim * screen_width, ps);
1868 break;
1869 case OMAP_DSS_ROT_180:
1870 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
1871 if (field_offset)
1872 *offset0 = *offset1 - field_offset * screen_width * ps;
1873 else
1874 *offset0 = *offset1;
1875 *row_inc = pixinc(-1 -
1876 (y_predecim * screen_width - fbw * x_predecim) -
1877 (fieldmode ? screen_width : 0), ps);
1878 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1879 color_mode == OMAP_DSS_COLOR_UYVY)
1880 *pix_inc = pixinc(-x_predecim, 2 * ps);
1881 else
1882 *pix_inc = pixinc(-x_predecim, ps);
1883 break;
1884 case OMAP_DSS_ROT_270:
1885 *offset1 = (fbw - 1) * ps;
1886 if (field_offset)
1887 *offset0 = *offset1 - field_offset * ps;
1888 else
1889 *offset0 = *offset1;
1890 *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) -
1891 y_predecim - (fieldmode ? 1 : 0), ps);
1892 *pix_inc = pixinc(x_predecim * screen_width, ps);
1893 break;
1894
1895 /* mirroring */
1896 case OMAP_DSS_ROT_0 + 4:
1897 *offset1 = (fbw - 1) * ps;
1898 if (field_offset)
1899 *offset0 = *offset1 + field_offset * screen_width * ps;
1900 else
1901 *offset0 = *offset1;
1902 *row_inc = pixinc(y_predecim * screen_width * 2 - 1 +
1903 (fieldmode ? screen_width : 0),
1904 ps);
1905 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1906 color_mode == OMAP_DSS_COLOR_UYVY)
1907 *pix_inc = pixinc(-x_predecim, 2 * ps);
1908 else
1909 *pix_inc = pixinc(-x_predecim, ps);
1910 break;
1911
1912 case OMAP_DSS_ROT_90 + 4:
1913 *offset1 = 0;
1914 if (field_offset)
1915 *offset0 = *offset1 + field_offset * ps;
1916 else
1917 *offset0 = *offset1;
1918 *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) +
1919 y_predecim + (fieldmode ? 1 : 0),
1920 ps);
1921 *pix_inc = pixinc(x_predecim * screen_width, ps);
1922 break;
1923
1924 case OMAP_DSS_ROT_180 + 4:
1925 *offset1 = screen_width * (fbh - 1) * ps;
1926 if (field_offset)
1927 *offset0 = *offset1 - field_offset * screen_width * ps;
1928 else
1929 *offset0 = *offset1;
1930 *row_inc = pixinc(1 - y_predecim * screen_width * 2 -
1931 (fieldmode ? screen_width : 0),
1932 ps);
1933 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1934 color_mode == OMAP_DSS_COLOR_UYVY)
1935 *pix_inc = pixinc(x_predecim, 2 * ps);
1936 else
1937 *pix_inc = pixinc(x_predecim, ps);
1938 break;
1939
1940 case OMAP_DSS_ROT_270 + 4:
1941 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
1942 if (field_offset)
1943 *offset0 = *offset1 - field_offset * ps;
1944 else
1945 *offset0 = *offset1;
1946 *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) -
1947 y_predecim - (fieldmode ? 1 : 0),
1948 ps);
1949 *pix_inc = pixinc(-x_predecim * screen_width, ps);
1950 break;
1951
1952 default:
1953 BUG();
1954 return;
1955 }
1956 }
1957
calc_tiler_rotation_offset(u16 screen_width,u16 width,enum omap_color_mode color_mode,bool fieldmode,unsigned int field_offset,unsigned * offset0,unsigned * offset1,s32 * row_inc,s32 * pix_inc,int x_predecim,int y_predecim)1958 static void calc_tiler_rotation_offset(u16 screen_width, u16 width,
1959 enum omap_color_mode color_mode, bool fieldmode,
1960 unsigned int field_offset, unsigned *offset0, unsigned *offset1,
1961 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
1962 {
1963 u8 ps;
1964
1965 switch (color_mode) {
1966 case OMAP_DSS_COLOR_CLUT1:
1967 case OMAP_DSS_COLOR_CLUT2:
1968 case OMAP_DSS_COLOR_CLUT4:
1969 case OMAP_DSS_COLOR_CLUT8:
1970 BUG();
1971 return;
1972 default:
1973 ps = color_mode_to_bpp(color_mode) / 8;
1974 break;
1975 }
1976
1977 DSSDBG("scrw %d, width %d\n", screen_width, width);
1978
1979 /*
1980 * field 0 = even field = bottom field
1981 * field 1 = odd field = top field
1982 */
1983 *offset1 = 0;
1984 if (field_offset)
1985 *offset0 = *offset1 + field_offset * screen_width * ps;
1986 else
1987 *offset0 = *offset1;
1988 *row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) +
1989 (fieldmode ? screen_width : 0), ps);
1990 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1991 color_mode == OMAP_DSS_COLOR_UYVY)
1992 *pix_inc = pixinc(x_predecim, 2 * ps);
1993 else
1994 *pix_inc = pixinc(x_predecim, ps);
1995 }
1996
1997 /*
1998 * This function is used to avoid synclosts in OMAP3, because of some
1999 * undocumented horizontal position and timing related limitations.
2000 */
check_horiz_timing_omap3(unsigned long pclk,unsigned long lclk,const struct omap_video_timings * t,u16 pos_x,u16 width,u16 height,u16 out_width,u16 out_height,bool five_taps)2001 static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk,
2002 const struct omap_video_timings *t, u16 pos_x,
2003 u16 width, u16 height, u16 out_width, u16 out_height,
2004 bool five_taps)
2005 {
2006 const int ds = DIV_ROUND_UP(height, out_height);
2007 unsigned long nonactive;
2008 static const u8 limits[3] = { 8, 10, 20 };
2009 u64 val, blank;
2010 int i;
2011
2012 nonactive = t->x_res + t->hfp + t->hsw + t->hbp - out_width;
2013
2014 i = 0;
2015 if (out_height < height)
2016 i++;
2017 if (out_width < width)
2018 i++;
2019 blank = div_u64((u64)(t->hbp + t->hsw + t->hfp) * lclk, pclk);
2020 DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]);
2021 if (blank <= limits[i])
2022 return -EINVAL;
2023
2024 /* FIXME add checks for 3-tap filter once the limitations are known */
2025 if (!five_taps)
2026 return 0;
2027
2028 /*
2029 * Pixel data should be prepared before visible display point starts.
2030 * So, atleast DS-2 lines must have already been fetched by DISPC
2031 * during nonactive - pos_x period.
2032 */
2033 val = div_u64((u64)(nonactive - pos_x) * lclk, pclk);
2034 DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n",
2035 val, max(0, ds - 2) * width);
2036 if (val < max(0, ds - 2) * width)
2037 return -EINVAL;
2038
2039 /*
2040 * All lines need to be refilled during the nonactive period of which
2041 * only one line can be loaded during the active period. So, atleast
2042 * DS - 1 lines should be loaded during nonactive period.
2043 */
2044 val = div_u64((u64)nonactive * lclk, pclk);
2045 DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n",
2046 val, max(0, ds - 1) * width);
2047 if (val < max(0, ds - 1) * width)
2048 return -EINVAL;
2049
2050 return 0;
2051 }
2052
calc_core_clk_five_taps(unsigned long pclk,const struct omap_video_timings * mgr_timings,u16 width,u16 height,u16 out_width,u16 out_height,enum omap_color_mode color_mode)2053 static unsigned long calc_core_clk_five_taps(unsigned long pclk,
2054 const struct omap_video_timings *mgr_timings, u16 width,
2055 u16 height, u16 out_width, u16 out_height,
2056 enum omap_color_mode color_mode)
2057 {
2058 u32 core_clk = 0;
2059 u64 tmp;
2060
2061 if (height <= out_height && width <= out_width)
2062 return (unsigned long) pclk;
2063
2064 if (height > out_height) {
2065 unsigned int ppl = mgr_timings->x_res;
2066
2067 tmp = pclk * height * out_width;
2068 do_div(tmp, 2 * out_height * ppl);
2069 core_clk = tmp;
2070
2071 if (height > 2 * out_height) {
2072 if (ppl == out_width)
2073 return 0;
2074
2075 tmp = pclk * (height - 2 * out_height) * out_width;
2076 do_div(tmp, 2 * out_height * (ppl - out_width));
2077 core_clk = max_t(u32, core_clk, tmp);
2078 }
2079 }
2080
2081 if (width > out_width) {
2082 tmp = pclk * width;
2083 do_div(tmp, out_width);
2084 core_clk = max_t(u32, core_clk, tmp);
2085
2086 if (color_mode == OMAP_DSS_COLOR_RGB24U)
2087 core_clk <<= 1;
2088 }
2089
2090 return core_clk;
2091 }
2092
calc_core_clk_24xx(unsigned long pclk,u16 width,u16 height,u16 out_width,u16 out_height,bool mem_to_mem)2093 static unsigned long calc_core_clk_24xx(unsigned long pclk, u16 width,
2094 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2095 {
2096 if (height > out_height && width > out_width)
2097 return pclk * 4;
2098 else
2099 return pclk * 2;
2100 }
2101
calc_core_clk_34xx(unsigned long pclk,u16 width,u16 height,u16 out_width,u16 out_height,bool mem_to_mem)2102 static unsigned long calc_core_clk_34xx(unsigned long pclk, u16 width,
2103 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2104 {
2105 unsigned int hf, vf;
2106
2107 /*
2108 * FIXME how to determine the 'A' factor
2109 * for the no downscaling case ?
2110 */
2111
2112 if (width > 3 * out_width)
2113 hf = 4;
2114 else if (width > 2 * out_width)
2115 hf = 3;
2116 else if (width > out_width)
2117 hf = 2;
2118 else
2119 hf = 1;
2120 if (height > out_height)
2121 vf = 2;
2122 else
2123 vf = 1;
2124
2125 return pclk * vf * hf;
2126 }
2127
calc_core_clk_44xx(unsigned long pclk,u16 width,u16 height,u16 out_width,u16 out_height,bool mem_to_mem)2128 static unsigned long calc_core_clk_44xx(unsigned long pclk, u16 width,
2129 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2130 {
2131 /*
2132 * If the overlay/writeback is in mem to mem mode, there are no
2133 * downscaling limitations with respect to pixel clock, return 1 as
2134 * required core clock to represent that we have sufficient enough
2135 * core clock to do maximum downscaling
2136 */
2137 if (mem_to_mem)
2138 return 1;
2139
2140 if (width > out_width)
2141 return DIV_ROUND_UP(pclk, out_width) * width;
2142 else
2143 return pclk;
2144 }
2145
dispc_ovl_calc_scaling_24xx(unsigned long pclk,unsigned long lclk,const struct omap_video_timings * mgr_timings,u16 width,u16 height,u16 out_width,u16 out_height,enum omap_color_mode color_mode,bool * five_taps,int * x_predecim,int * y_predecim,int * decim_x,int * decim_y,u16 pos_x,unsigned long * core_clk,bool mem_to_mem)2146 static int dispc_ovl_calc_scaling_24xx(unsigned long pclk, unsigned long lclk,
2147 const struct omap_video_timings *mgr_timings,
2148 u16 width, u16 height, u16 out_width, u16 out_height,
2149 enum omap_color_mode color_mode, bool *five_taps,
2150 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
2151 u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
2152 {
2153 int error;
2154 u16 in_width, in_height;
2155 int min_factor = min(*decim_x, *decim_y);
2156 const int maxsinglelinewidth =
2157 dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
2158
2159 *five_taps = false;
2160
2161 do {
2162 in_height = height / *decim_y;
2163 in_width = width / *decim_x;
2164 *core_clk = dispc.feat->calc_core_clk(pclk, in_width,
2165 in_height, out_width, out_height, mem_to_mem);
2166 error = (in_width > maxsinglelinewidth || !*core_clk ||
2167 *core_clk > dispc_core_clk_rate());
2168 if (error) {
2169 if (*decim_x == *decim_y) {
2170 *decim_x = min_factor;
2171 ++*decim_y;
2172 } else {
2173 swap(*decim_x, *decim_y);
2174 if (*decim_x < *decim_y)
2175 ++*decim_x;
2176 }
2177 }
2178 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2179
2180 if (in_width > maxsinglelinewidth) {
2181 DSSERR("Cannot scale max input width exceeded");
2182 return -EINVAL;
2183 }
2184 return 0;
2185 }
2186
dispc_ovl_calc_scaling_34xx(unsigned long pclk,unsigned long lclk,const struct omap_video_timings * mgr_timings,u16 width,u16 height,u16 out_width,u16 out_height,enum omap_color_mode color_mode,bool * five_taps,int * x_predecim,int * y_predecim,int * decim_x,int * decim_y,u16 pos_x,unsigned long * core_clk,bool mem_to_mem)2187 static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk,
2188 const struct omap_video_timings *mgr_timings,
2189 u16 width, u16 height, u16 out_width, u16 out_height,
2190 enum omap_color_mode color_mode, bool *five_taps,
2191 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
2192 u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
2193 {
2194 int error;
2195 u16 in_width, in_height;
2196 int min_factor = min(*decim_x, *decim_y);
2197 const int maxsinglelinewidth =
2198 dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
2199
2200 do {
2201 in_height = height / *decim_y;
2202 in_width = width / *decim_x;
2203 *five_taps = in_height > out_height;
2204
2205 if (in_width > maxsinglelinewidth)
2206 if (in_height > out_height &&
2207 in_height < out_height * 2)
2208 *five_taps = false;
2209 again:
2210 if (*five_taps)
2211 *core_clk = calc_core_clk_five_taps(pclk, mgr_timings,
2212 in_width, in_height, out_width,
2213 out_height, color_mode);
2214 else
2215 *core_clk = dispc.feat->calc_core_clk(pclk, in_width,
2216 in_height, out_width, out_height,
2217 mem_to_mem);
2218
2219 error = check_horiz_timing_omap3(pclk, lclk, mgr_timings,
2220 pos_x, in_width, in_height, out_width,
2221 out_height, *five_taps);
2222 if (error && *five_taps) {
2223 *five_taps = false;
2224 goto again;
2225 }
2226
2227 error = (error || in_width > maxsinglelinewidth * 2 ||
2228 (in_width > maxsinglelinewidth && *five_taps) ||
2229 !*core_clk || *core_clk > dispc_core_clk_rate());
2230 if (error) {
2231 if (*decim_x == *decim_y) {
2232 *decim_x = min_factor;
2233 ++*decim_y;
2234 } else {
2235 swap(*decim_x, *decim_y);
2236 if (*decim_x < *decim_y)
2237 ++*decim_x;
2238 }
2239 }
2240 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2241
2242 if (check_horiz_timing_omap3(pclk, lclk, mgr_timings, pos_x, width,
2243 height, out_width, out_height, *five_taps)) {
2244 DSSERR("horizontal timing too tight\n");
2245 return -EINVAL;
2246 }
2247
2248 if (in_width > (maxsinglelinewidth * 2)) {
2249 DSSERR("Cannot setup scaling");
2250 DSSERR("width exceeds maximum width possible");
2251 return -EINVAL;
2252 }
2253
2254 if (in_width > maxsinglelinewidth && *five_taps) {
2255 DSSERR("cannot setup scaling with five taps");
2256 return -EINVAL;
2257 }
2258 return 0;
2259 }
2260
dispc_ovl_calc_scaling_44xx(unsigned long pclk,unsigned long lclk,const struct omap_video_timings * mgr_timings,u16 width,u16 height,u16 out_width,u16 out_height,enum omap_color_mode color_mode,bool * five_taps,int * x_predecim,int * y_predecim,int * decim_x,int * decim_y,u16 pos_x,unsigned long * core_clk,bool mem_to_mem)2261 static int dispc_ovl_calc_scaling_44xx(unsigned long pclk, unsigned long lclk,
2262 const struct omap_video_timings *mgr_timings,
2263 u16 width, u16 height, u16 out_width, u16 out_height,
2264 enum omap_color_mode color_mode, bool *five_taps,
2265 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
2266 u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
2267 {
2268 u16 in_width, in_width_max;
2269 int decim_x_min = *decim_x;
2270 u16 in_height = height / *decim_y;
2271 const int maxsinglelinewidth =
2272 dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
2273 const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
2274
2275 if (mem_to_mem) {
2276 in_width_max = out_width * maxdownscale;
2277 } else {
2278 in_width_max = dispc_core_clk_rate() /
2279 DIV_ROUND_UP(pclk, out_width);
2280 }
2281
2282 *decim_x = DIV_ROUND_UP(width, in_width_max);
2283
2284 *decim_x = *decim_x > decim_x_min ? *decim_x : decim_x_min;
2285 if (*decim_x > *x_predecim)
2286 return -EINVAL;
2287
2288 do {
2289 in_width = width / *decim_x;
2290 } while (*decim_x <= *x_predecim &&
2291 in_width > maxsinglelinewidth && ++*decim_x);
2292
2293 if (in_width > maxsinglelinewidth) {
2294 DSSERR("Cannot scale width exceeds max line width");
2295 return -EINVAL;
2296 }
2297
2298 *core_clk = dispc.feat->calc_core_clk(pclk, in_width, in_height,
2299 out_width, out_height, mem_to_mem);
2300 return 0;
2301 }
2302
dispc_ovl_calc_scaling(unsigned long pclk,unsigned long lclk,enum omap_overlay_caps caps,const struct omap_video_timings * mgr_timings,u16 width,u16 height,u16 out_width,u16 out_height,enum omap_color_mode color_mode,bool * five_taps,int * x_predecim,int * y_predecim,u16 pos_x,enum omap_dss_rotation_type rotation_type,bool mem_to_mem)2303 static int dispc_ovl_calc_scaling(unsigned long pclk, unsigned long lclk,
2304 enum omap_overlay_caps caps,
2305 const struct omap_video_timings *mgr_timings,
2306 u16 width, u16 height, u16 out_width, u16 out_height,
2307 enum omap_color_mode color_mode, bool *five_taps,
2308 int *x_predecim, int *y_predecim, u16 pos_x,
2309 enum omap_dss_rotation_type rotation_type, bool mem_to_mem)
2310 {
2311 const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
2312 const int max_decim_limit = 16;
2313 unsigned long core_clk = 0;
2314 int decim_x, decim_y, ret;
2315
2316 if (width == out_width && height == out_height)
2317 return 0;
2318
2319 if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
2320 return -EINVAL;
2321
2322 if (mem_to_mem) {
2323 *x_predecim = *y_predecim = 1;
2324 } else {
2325 *x_predecim = max_decim_limit;
2326 *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER &&
2327 dss_has_feature(FEAT_BURST_2D)) ?
2328 2 : max_decim_limit;
2329 }
2330
2331 if (color_mode == OMAP_DSS_COLOR_CLUT1 ||
2332 color_mode == OMAP_DSS_COLOR_CLUT2 ||
2333 color_mode == OMAP_DSS_COLOR_CLUT4 ||
2334 color_mode == OMAP_DSS_COLOR_CLUT8) {
2335 *x_predecim = 1;
2336 *y_predecim = 1;
2337 *five_taps = false;
2338 return 0;
2339 }
2340
2341 decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxdownscale);
2342 decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxdownscale);
2343
2344 if (decim_x > *x_predecim || out_width > width * 8)
2345 return -EINVAL;
2346
2347 if (decim_y > *y_predecim || out_height > height * 8)
2348 return -EINVAL;
2349
2350 ret = dispc.feat->calc_scaling(pclk, lclk, mgr_timings, width, height,
2351 out_width, out_height, color_mode, five_taps,
2352 x_predecim, y_predecim, &decim_x, &decim_y, pos_x, &core_clk,
2353 mem_to_mem);
2354 if (ret)
2355 return ret;
2356
2357 DSSDBG("required core clk rate = %lu Hz\n", core_clk);
2358 DSSDBG("current core clk rate = %lu Hz\n", dispc_core_clk_rate());
2359
2360 if (!core_clk || core_clk > dispc_core_clk_rate()) {
2361 DSSERR("failed to set up scaling, "
2362 "required core clk rate = %lu Hz, "
2363 "current core clk rate = %lu Hz\n",
2364 core_clk, dispc_core_clk_rate());
2365 return -EINVAL;
2366 }
2367
2368 *x_predecim = decim_x;
2369 *y_predecim = decim_y;
2370 return 0;
2371 }
2372
dispc_ovl_check(enum omap_plane plane,enum omap_channel channel,const struct omap_overlay_info * oi,const struct omap_video_timings * timings,int * x_predecim,int * y_predecim)2373 int dispc_ovl_check(enum omap_plane plane, enum omap_channel channel,
2374 const struct omap_overlay_info *oi,
2375 const struct omap_video_timings *timings,
2376 int *x_predecim, int *y_predecim)
2377 {
2378 enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane);
2379 bool five_taps = true;
2380 bool fieldmode = false;
2381 u16 in_height = oi->height;
2382 u16 in_width = oi->width;
2383 bool ilace = timings->interlace;
2384 u16 out_width, out_height;
2385 int pos_x = oi->pos_x;
2386 unsigned long pclk = dispc_mgr_pclk_rate(channel);
2387 unsigned long lclk = dispc_mgr_lclk_rate(channel);
2388
2389 out_width = oi->out_width == 0 ? oi->width : oi->out_width;
2390 out_height = oi->out_height == 0 ? oi->height : oi->out_height;
2391
2392 if (ilace && oi->height == out_height)
2393 fieldmode = true;
2394
2395 if (ilace) {
2396 if (fieldmode)
2397 in_height /= 2;
2398 out_height /= 2;
2399
2400 DSSDBG("adjusting for ilace: height %d, out_height %d\n",
2401 in_height, out_height);
2402 }
2403
2404 if (!dss_feat_color_mode_supported(plane, oi->color_mode))
2405 return -EINVAL;
2406
2407 return dispc_ovl_calc_scaling(pclk, lclk, caps, timings, in_width,
2408 in_height, out_width, out_height, oi->color_mode,
2409 &five_taps, x_predecim, y_predecim, pos_x,
2410 oi->rotation_type, false);
2411 }
2412 EXPORT_SYMBOL(dispc_ovl_check);
2413
dispc_ovl_setup_common(enum omap_plane plane,enum omap_overlay_caps caps,u32 paddr,u32 p_uv_addr,u16 screen_width,int pos_x,int pos_y,u16 width,u16 height,u16 out_width,u16 out_height,enum omap_color_mode color_mode,u8 rotation,bool mirror,u8 zorder,u8 pre_mult_alpha,u8 global_alpha,enum omap_dss_rotation_type rotation_type,bool replication,const struct omap_video_timings * mgr_timings,bool mem_to_mem)2414 static int dispc_ovl_setup_common(enum omap_plane plane,
2415 enum omap_overlay_caps caps, u32 paddr, u32 p_uv_addr,
2416 u16 screen_width, int pos_x, int pos_y, u16 width, u16 height,
2417 u16 out_width, u16 out_height, enum omap_color_mode color_mode,
2418 u8 rotation, bool mirror, u8 zorder, u8 pre_mult_alpha,
2419 u8 global_alpha, enum omap_dss_rotation_type rotation_type,
2420 bool replication, const struct omap_video_timings *mgr_timings,
2421 bool mem_to_mem)
2422 {
2423 bool five_taps = true;
2424 bool fieldmode = false;
2425 int r, cconv = 0;
2426 unsigned offset0, offset1;
2427 s32 row_inc;
2428 s32 pix_inc;
2429 u16 frame_width, frame_height;
2430 unsigned int field_offset = 0;
2431 u16 in_height = height;
2432 u16 in_width = width;
2433 int x_predecim = 1, y_predecim = 1;
2434 bool ilace = mgr_timings->interlace;
2435 unsigned long pclk = dispc_plane_pclk_rate(plane);
2436 unsigned long lclk = dispc_plane_lclk_rate(plane);
2437
2438 if (paddr == 0)
2439 return -EINVAL;
2440
2441 out_width = out_width == 0 ? width : out_width;
2442 out_height = out_height == 0 ? height : out_height;
2443
2444 if (ilace && height == out_height)
2445 fieldmode = true;
2446
2447 if (ilace) {
2448 if (fieldmode)
2449 in_height /= 2;
2450 pos_y /= 2;
2451 out_height /= 2;
2452
2453 DSSDBG("adjusting for ilace: height %d, pos_y %d, "
2454 "out_height %d\n", in_height, pos_y,
2455 out_height);
2456 }
2457
2458 if (!dss_feat_color_mode_supported(plane, color_mode))
2459 return -EINVAL;
2460
2461 r = dispc_ovl_calc_scaling(pclk, lclk, caps, mgr_timings, in_width,
2462 in_height, out_width, out_height, color_mode,
2463 &five_taps, &x_predecim, &y_predecim, pos_x,
2464 rotation_type, mem_to_mem);
2465 if (r)
2466 return r;
2467
2468 in_width = in_width / x_predecim;
2469 in_height = in_height / y_predecim;
2470
2471 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2472 color_mode == OMAP_DSS_COLOR_UYVY ||
2473 color_mode == OMAP_DSS_COLOR_NV12)
2474 cconv = 1;
2475
2476 if (ilace && !fieldmode) {
2477 /*
2478 * when downscaling the bottom field may have to start several
2479 * source lines below the top field. Unfortunately ACCUI
2480 * registers will only hold the fractional part of the offset
2481 * so the integer part must be added to the base address of the
2482 * bottom field.
2483 */
2484 if (!in_height || in_height == out_height)
2485 field_offset = 0;
2486 else
2487 field_offset = in_height / out_height / 2;
2488 }
2489
2490 /* Fields are independent but interleaved in memory. */
2491 if (fieldmode)
2492 field_offset = 1;
2493
2494 offset0 = 0;
2495 offset1 = 0;
2496 row_inc = 0;
2497 pix_inc = 0;
2498
2499 if (plane == OMAP_DSS_WB) {
2500 frame_width = out_width;
2501 frame_height = out_height;
2502 } else {
2503 frame_width = in_width;
2504 frame_height = height;
2505 }
2506
2507 if (rotation_type == OMAP_DSS_ROT_TILER)
2508 calc_tiler_rotation_offset(screen_width, frame_width,
2509 color_mode, fieldmode, field_offset,
2510 &offset0, &offset1, &row_inc, &pix_inc,
2511 x_predecim, y_predecim);
2512 else if (rotation_type == OMAP_DSS_ROT_DMA)
2513 calc_dma_rotation_offset(rotation, mirror, screen_width,
2514 frame_width, frame_height,
2515 color_mode, fieldmode, field_offset,
2516 &offset0, &offset1, &row_inc, &pix_inc,
2517 x_predecim, y_predecim);
2518 else
2519 calc_vrfb_rotation_offset(rotation, mirror,
2520 screen_width, frame_width, frame_height,
2521 color_mode, fieldmode, field_offset,
2522 &offset0, &offset1, &row_inc, &pix_inc,
2523 x_predecim, y_predecim);
2524
2525 DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
2526 offset0, offset1, row_inc, pix_inc);
2527
2528 dispc_ovl_set_color_mode(plane, color_mode);
2529
2530 dispc_ovl_configure_burst_type(plane, rotation_type);
2531
2532 dispc_ovl_set_ba0(plane, paddr + offset0);
2533 dispc_ovl_set_ba1(plane, paddr + offset1);
2534
2535 if (OMAP_DSS_COLOR_NV12 == color_mode) {
2536 dispc_ovl_set_ba0_uv(plane, p_uv_addr + offset0);
2537 dispc_ovl_set_ba1_uv(plane, p_uv_addr + offset1);
2538 }
2539
2540 dispc_ovl_set_row_inc(plane, row_inc);
2541 dispc_ovl_set_pix_inc(plane, pix_inc);
2542
2543 DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width,
2544 in_height, out_width, out_height);
2545
2546 dispc_ovl_set_pos(plane, caps, pos_x, pos_y);
2547
2548 dispc_ovl_set_input_size(plane, in_width, in_height);
2549
2550 if (caps & OMAP_DSS_OVL_CAP_SCALE) {
2551 dispc_ovl_set_scaling(plane, in_width, in_height, out_width,
2552 out_height, ilace, five_taps, fieldmode,
2553 color_mode, rotation);
2554 dispc_ovl_set_output_size(plane, out_width, out_height);
2555 dispc_ovl_set_vid_color_conv(plane, cconv);
2556 }
2557
2558 dispc_ovl_set_rotation_attrs(plane, rotation, rotation_type, mirror,
2559 color_mode);
2560
2561 dispc_ovl_set_zorder(plane, caps, zorder);
2562 dispc_ovl_set_pre_mult_alpha(plane, caps, pre_mult_alpha);
2563 dispc_ovl_setup_global_alpha(plane, caps, global_alpha);
2564
2565 dispc_ovl_enable_replication(plane, caps, replication);
2566
2567 return 0;
2568 }
2569
dispc_ovl_setup(enum omap_plane plane,const struct omap_overlay_info * oi,bool replication,const struct omap_video_timings * mgr_timings,bool mem_to_mem)2570 int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi,
2571 bool replication, const struct omap_video_timings *mgr_timings,
2572 bool mem_to_mem)
2573 {
2574 int r;
2575 enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane);
2576 enum omap_channel channel;
2577
2578 channel = dispc_ovl_get_channel_out(plane);
2579
2580 DSSDBG("dispc_ovl_setup %d, pa %pad, pa_uv %pad, sw %d, %d,%d, %dx%d ->"
2581 " %dx%d, cmode %x, rot %d, mir %d, chan %d repl %d\n",
2582 plane, &oi->paddr, &oi->p_uv_addr, oi->screen_width, oi->pos_x,
2583 oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height,
2584 oi->color_mode, oi->rotation, oi->mirror, channel, replication);
2585
2586 r = dispc_ovl_setup_common(plane, caps, oi->paddr, oi->p_uv_addr,
2587 oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
2588 oi->out_width, oi->out_height, oi->color_mode, oi->rotation,
2589 oi->mirror, oi->zorder, oi->pre_mult_alpha, oi->global_alpha,
2590 oi->rotation_type, replication, mgr_timings, mem_to_mem);
2591
2592 return r;
2593 }
2594 EXPORT_SYMBOL(dispc_ovl_setup);
2595
dispc_wb_setup(const struct omap_dss_writeback_info * wi,bool mem_to_mem,const struct omap_video_timings * mgr_timings)2596 int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
2597 bool mem_to_mem, const struct omap_video_timings *mgr_timings)
2598 {
2599 int r;
2600 u32 l;
2601 enum omap_plane plane = OMAP_DSS_WB;
2602 const int pos_x = 0, pos_y = 0;
2603 const u8 zorder = 0, global_alpha = 0;
2604 const bool replication = false;
2605 bool truncation;
2606 int in_width = mgr_timings->x_res;
2607 int in_height = mgr_timings->y_res;
2608 enum omap_overlay_caps caps =
2609 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA;
2610
2611 DSSDBG("dispc_wb_setup, pa %x, pa_uv %x, %d,%d -> %dx%d, cmode %x, "
2612 "rot %d, mir %d\n", wi->paddr, wi->p_uv_addr, in_width,
2613 in_height, wi->width, wi->height, wi->color_mode, wi->rotation,
2614 wi->mirror);
2615
2616 r = dispc_ovl_setup_common(plane, caps, wi->paddr, wi->p_uv_addr,
2617 wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width,
2618 wi->height, wi->color_mode, wi->rotation, wi->mirror, zorder,
2619 wi->pre_mult_alpha, global_alpha, wi->rotation_type,
2620 replication, mgr_timings, mem_to_mem);
2621
2622 switch (wi->color_mode) {
2623 case OMAP_DSS_COLOR_RGB16:
2624 case OMAP_DSS_COLOR_RGB24P:
2625 case OMAP_DSS_COLOR_ARGB16:
2626 case OMAP_DSS_COLOR_RGBA16:
2627 case OMAP_DSS_COLOR_RGB12U:
2628 case OMAP_DSS_COLOR_ARGB16_1555:
2629 case OMAP_DSS_COLOR_XRGB16_1555:
2630 case OMAP_DSS_COLOR_RGBX16:
2631 truncation = true;
2632 break;
2633 default:
2634 truncation = false;
2635 break;
2636 }
2637
2638 /* setup extra DISPC_WB_ATTRIBUTES */
2639 l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
2640 l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */
2641 l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */
2642 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
2643
2644 return r;
2645 }
2646
dispc_ovl_enable(enum omap_plane plane,bool enable)2647 int dispc_ovl_enable(enum omap_plane plane, bool enable)
2648 {
2649 DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
2650
2651 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
2652
2653 return 0;
2654 }
2655 EXPORT_SYMBOL(dispc_ovl_enable);
2656
dispc_ovl_enabled(enum omap_plane plane)2657 bool dispc_ovl_enabled(enum omap_plane plane)
2658 {
2659 return REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0);
2660 }
2661 EXPORT_SYMBOL(dispc_ovl_enabled);
2662
dispc_mgr_enable(enum omap_channel channel,bool enable)2663 void dispc_mgr_enable(enum omap_channel channel, bool enable)
2664 {
2665 mgr_fld_write(channel, DISPC_MGR_FLD_ENABLE, enable);
2666 /* flush posted write */
2667 mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
2668 }
2669 EXPORT_SYMBOL(dispc_mgr_enable);
2670
dispc_mgr_is_enabled(enum omap_channel channel)2671 bool dispc_mgr_is_enabled(enum omap_channel channel)
2672 {
2673 return !!mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
2674 }
2675 EXPORT_SYMBOL(dispc_mgr_is_enabled);
2676
dispc_wb_enable(bool enable)2677 void dispc_wb_enable(bool enable)
2678 {
2679 dispc_ovl_enable(OMAP_DSS_WB, enable);
2680 }
2681
dispc_wb_is_enabled(void)2682 bool dispc_wb_is_enabled(void)
2683 {
2684 return dispc_ovl_enabled(OMAP_DSS_WB);
2685 }
2686
dispc_lcd_enable_signal_polarity(bool act_high)2687 static void dispc_lcd_enable_signal_polarity(bool act_high)
2688 {
2689 if (!dss_has_feature(FEAT_LCDENABLEPOL))
2690 return;
2691
2692 REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
2693 }
2694
dispc_lcd_enable_signal(bool enable)2695 void dispc_lcd_enable_signal(bool enable)
2696 {
2697 if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
2698 return;
2699
2700 REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
2701 }
2702
dispc_pck_free_enable(bool enable)2703 void dispc_pck_free_enable(bool enable)
2704 {
2705 if (!dss_has_feature(FEAT_PCKFREEENABLE))
2706 return;
2707
2708 REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
2709 }
2710
dispc_mgr_enable_fifohandcheck(enum omap_channel channel,bool enable)2711 static void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable)
2712 {
2713 mgr_fld_write(channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable);
2714 }
2715
2716
dispc_mgr_set_lcd_type_tft(enum omap_channel channel)2717 static void dispc_mgr_set_lcd_type_tft(enum omap_channel channel)
2718 {
2719 mgr_fld_write(channel, DISPC_MGR_FLD_STNTFT, 1);
2720 }
2721
dispc_set_loadmode(enum omap_dss_load_mode mode)2722 void dispc_set_loadmode(enum omap_dss_load_mode mode)
2723 {
2724 REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
2725 }
2726
2727
dispc_mgr_set_default_color(enum omap_channel channel,u32 color)2728 static void dispc_mgr_set_default_color(enum omap_channel channel, u32 color)
2729 {
2730 dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
2731 }
2732
dispc_mgr_set_trans_key(enum omap_channel ch,enum omap_dss_trans_key_type type,u32 trans_key)2733 static void dispc_mgr_set_trans_key(enum omap_channel ch,
2734 enum omap_dss_trans_key_type type,
2735 u32 trans_key)
2736 {
2737 mgr_fld_write(ch, DISPC_MGR_FLD_TCKSELECTION, type);
2738
2739 dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key);
2740 }
2741
dispc_mgr_enable_trans_key(enum omap_channel ch,bool enable)2742 static void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable)
2743 {
2744 mgr_fld_write(ch, DISPC_MGR_FLD_TCKENABLE, enable);
2745 }
2746
dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch,bool enable)2747 static void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch,
2748 bool enable)
2749 {
2750 if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
2751 return;
2752
2753 if (ch == OMAP_DSS_CHANNEL_LCD)
2754 REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
2755 else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2756 REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
2757 }
2758
dispc_mgr_setup(enum omap_channel channel,const struct omap_overlay_manager_info * info)2759 void dispc_mgr_setup(enum omap_channel channel,
2760 const struct omap_overlay_manager_info *info)
2761 {
2762 dispc_mgr_set_default_color(channel, info->default_color);
2763 dispc_mgr_set_trans_key(channel, info->trans_key_type, info->trans_key);
2764 dispc_mgr_enable_trans_key(channel, info->trans_enabled);
2765 dispc_mgr_enable_alpha_fixed_zorder(channel,
2766 info->partial_alpha_enabled);
2767 if (dss_has_feature(FEAT_CPR)) {
2768 dispc_mgr_enable_cpr(channel, info->cpr_enable);
2769 dispc_mgr_set_cpr_coef(channel, &info->cpr_coefs);
2770 }
2771 }
2772 EXPORT_SYMBOL(dispc_mgr_setup);
2773
dispc_mgr_set_tft_data_lines(enum omap_channel channel,u8 data_lines)2774 static void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines)
2775 {
2776 int code;
2777
2778 switch (data_lines) {
2779 case 12:
2780 code = 0;
2781 break;
2782 case 16:
2783 code = 1;
2784 break;
2785 case 18:
2786 code = 2;
2787 break;
2788 case 24:
2789 code = 3;
2790 break;
2791 default:
2792 BUG();
2793 return;
2794 }
2795
2796 mgr_fld_write(channel, DISPC_MGR_FLD_TFTDATALINES, code);
2797 }
2798
dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode)2799 static void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode)
2800 {
2801 u32 l;
2802 int gpout0, gpout1;
2803
2804 switch (mode) {
2805 case DSS_IO_PAD_MODE_RESET:
2806 gpout0 = 0;
2807 gpout1 = 0;
2808 break;
2809 case DSS_IO_PAD_MODE_RFBI:
2810 gpout0 = 1;
2811 gpout1 = 0;
2812 break;
2813 case DSS_IO_PAD_MODE_BYPASS:
2814 gpout0 = 1;
2815 gpout1 = 1;
2816 break;
2817 default:
2818 BUG();
2819 return;
2820 }
2821
2822 l = dispc_read_reg(DISPC_CONTROL);
2823 l = FLD_MOD(l, gpout0, 15, 15);
2824 l = FLD_MOD(l, gpout1, 16, 16);
2825 dispc_write_reg(DISPC_CONTROL, l);
2826 }
2827
dispc_mgr_enable_stallmode(enum omap_channel channel,bool enable)2828 static void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable)
2829 {
2830 mgr_fld_write(channel, DISPC_MGR_FLD_STALLMODE, enable);
2831 }
2832
dispc_mgr_set_lcd_config(enum omap_channel channel,const struct dss_lcd_mgr_config * config)2833 void dispc_mgr_set_lcd_config(enum omap_channel channel,
2834 const struct dss_lcd_mgr_config *config)
2835 {
2836 dispc_mgr_set_io_pad_mode(config->io_pad_mode);
2837
2838 dispc_mgr_enable_stallmode(channel, config->stallmode);
2839 dispc_mgr_enable_fifohandcheck(channel, config->fifohandcheck);
2840
2841 dispc_mgr_set_clock_div(channel, &config->clock_info);
2842
2843 dispc_mgr_set_tft_data_lines(channel, config->video_port_width);
2844
2845 dispc_lcd_enable_signal_polarity(config->lcden_sig_polarity);
2846
2847 dispc_mgr_set_lcd_type_tft(channel);
2848 }
2849 EXPORT_SYMBOL(dispc_mgr_set_lcd_config);
2850
_dispc_mgr_size_ok(u16 width,u16 height)2851 static bool _dispc_mgr_size_ok(u16 width, u16 height)
2852 {
2853 return width <= dispc.feat->mgr_width_max &&
2854 height <= dispc.feat->mgr_height_max;
2855 }
2856
_dispc_lcd_timings_ok(int hsw,int hfp,int hbp,int vsw,int vfp,int vbp)2857 static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
2858 int vsw, int vfp, int vbp)
2859 {
2860 if (hsw < 1 || hsw > dispc.feat->sw_max ||
2861 hfp < 1 || hfp > dispc.feat->hp_max ||
2862 hbp < 1 || hbp > dispc.feat->hp_max ||
2863 vsw < 1 || vsw > dispc.feat->sw_max ||
2864 vfp < 0 || vfp > dispc.feat->vp_max ||
2865 vbp < 0 || vbp > dispc.feat->vp_max)
2866 return false;
2867 return true;
2868 }
2869
_dispc_mgr_pclk_ok(enum omap_channel channel,unsigned long pclk)2870 static bool _dispc_mgr_pclk_ok(enum omap_channel channel,
2871 unsigned long pclk)
2872 {
2873 if (dss_mgr_is_lcd(channel))
2874 return pclk <= dispc.feat->max_lcd_pclk ? true : false;
2875 else
2876 return pclk <= dispc.feat->max_tv_pclk ? true : false;
2877 }
2878
dispc_mgr_timings_ok(enum omap_channel channel,const struct omap_video_timings * timings)2879 bool dispc_mgr_timings_ok(enum omap_channel channel,
2880 const struct omap_video_timings *timings)
2881 {
2882 if (!_dispc_mgr_size_ok(timings->x_res, timings->y_res))
2883 return false;
2884
2885 if (!_dispc_mgr_pclk_ok(channel, timings->pixelclock))
2886 return false;
2887
2888 if (dss_mgr_is_lcd(channel)) {
2889 /* TODO: OMAP4+ supports interlace for LCD outputs */
2890 if (timings->interlace)
2891 return false;
2892
2893 if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp,
2894 timings->hbp, timings->vsw, timings->vfp,
2895 timings->vbp))
2896 return false;
2897 }
2898
2899 return true;
2900 }
2901
_dispc_mgr_set_lcd_timings(enum omap_channel channel,int hsw,int hfp,int hbp,int vsw,int vfp,int vbp,enum omap_dss_signal_level vsync_level,enum omap_dss_signal_level hsync_level,enum omap_dss_signal_edge data_pclk_edge,enum omap_dss_signal_level de_level,enum omap_dss_signal_edge sync_pclk_edge)2902 static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, int hsw,
2903 int hfp, int hbp, int vsw, int vfp, int vbp,
2904 enum omap_dss_signal_level vsync_level,
2905 enum omap_dss_signal_level hsync_level,
2906 enum omap_dss_signal_edge data_pclk_edge,
2907 enum omap_dss_signal_level de_level,
2908 enum omap_dss_signal_edge sync_pclk_edge)
2909
2910 {
2911 u32 timing_h, timing_v, l;
2912 bool onoff, rf, ipc;
2913
2914 timing_h = FLD_VAL(hsw-1, dispc.feat->sw_start, 0) |
2915 FLD_VAL(hfp-1, dispc.feat->fp_start, 8) |
2916 FLD_VAL(hbp-1, dispc.feat->bp_start, 20);
2917 timing_v = FLD_VAL(vsw-1, dispc.feat->sw_start, 0) |
2918 FLD_VAL(vfp, dispc.feat->fp_start, 8) |
2919 FLD_VAL(vbp, dispc.feat->bp_start, 20);
2920
2921 dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
2922 dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
2923
2924 switch (data_pclk_edge) {
2925 case OMAPDSS_DRIVE_SIG_RISING_EDGE:
2926 ipc = false;
2927 break;
2928 case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
2929 ipc = true;
2930 break;
2931 case OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES:
2932 default:
2933 BUG();
2934 }
2935
2936 switch (sync_pclk_edge) {
2937 case OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES:
2938 onoff = false;
2939 rf = false;
2940 break;
2941 case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
2942 onoff = true;
2943 rf = false;
2944 break;
2945 case OMAPDSS_DRIVE_SIG_RISING_EDGE:
2946 onoff = true;
2947 rf = true;
2948 break;
2949 default:
2950 BUG();
2951 }
2952
2953 l = FLD_VAL(onoff, 17, 17) |
2954 FLD_VAL(rf, 16, 16) |
2955 FLD_VAL(de_level, 15, 15) |
2956 FLD_VAL(ipc, 14, 14) |
2957 FLD_VAL(hsync_level, 13, 13) |
2958 FLD_VAL(vsync_level, 12, 12);
2959
2960 dispc_write_reg(DISPC_POL_FREQ(channel), l);
2961 }
2962
2963 /* change name to mode? */
dispc_mgr_set_timings(enum omap_channel channel,const struct omap_video_timings * timings)2964 void dispc_mgr_set_timings(enum omap_channel channel,
2965 const struct omap_video_timings *timings)
2966 {
2967 unsigned xtot, ytot;
2968 unsigned long ht, vt;
2969 struct omap_video_timings t = *timings;
2970
2971 DSSDBG("channel %d xres %u yres %u\n", channel, t.x_res, t.y_res);
2972
2973 if (!dispc_mgr_timings_ok(channel, &t)) {
2974 BUG();
2975 return;
2976 }
2977
2978 if (dss_mgr_is_lcd(channel)) {
2979 _dispc_mgr_set_lcd_timings(channel, t.hsw, t.hfp, t.hbp, t.vsw,
2980 t.vfp, t.vbp, t.vsync_level, t.hsync_level,
2981 t.data_pclk_edge, t.de_level, t.sync_pclk_edge);
2982
2983 xtot = t.x_res + t.hfp + t.hsw + t.hbp;
2984 ytot = t.y_res + t.vfp + t.vsw + t.vbp;
2985
2986 ht = timings->pixelclock / xtot;
2987 vt = timings->pixelclock / xtot / ytot;
2988
2989 DSSDBG("pck %u\n", timings->pixelclock);
2990 DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
2991 t.hsw, t.hfp, t.hbp, t.vsw, t.vfp, t.vbp);
2992 DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n",
2993 t.vsync_level, t.hsync_level, t.data_pclk_edge,
2994 t.de_level, t.sync_pclk_edge);
2995
2996 DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
2997 } else {
2998 if (t.interlace == true)
2999 t.y_res /= 2;
3000 }
3001
3002 dispc_mgr_set_size(channel, t.x_res, t.y_res);
3003 }
3004 EXPORT_SYMBOL(dispc_mgr_set_timings);
3005
dispc_mgr_set_lcd_divisor(enum omap_channel channel,u16 lck_div,u16 pck_div)3006 static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
3007 u16 pck_div)
3008 {
3009 BUG_ON(lck_div < 1);
3010 BUG_ON(pck_div < 1);
3011
3012 dispc_write_reg(DISPC_DIVISORo(channel),
3013 FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
3014
3015 if (dss_has_feature(FEAT_CORE_CLK_DIV) == false &&
3016 channel == OMAP_DSS_CHANNEL_LCD)
3017 dispc.core_clk_rate = dispc_fclk_rate() / lck_div;
3018 }
3019
dispc_mgr_get_lcd_divisor(enum omap_channel channel,int * lck_div,int * pck_div)3020 static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div,
3021 int *pck_div)
3022 {
3023 u32 l;
3024 l = dispc_read_reg(DISPC_DIVISORo(channel));
3025 *lck_div = FLD_GET(l, 23, 16);
3026 *pck_div = FLD_GET(l, 7, 0);
3027 }
3028
dispc_fclk_rate(void)3029 unsigned long dispc_fclk_rate(void)
3030 {
3031 struct platform_device *dsidev;
3032 unsigned long r = 0;
3033
3034 switch (dss_get_dispc_clk_source()) {
3035 case OMAP_DSS_CLK_SRC_FCK:
3036 r = dss_get_dispc_clk_rate();
3037 break;
3038 case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
3039 dsidev = dsi_get_dsidev_from_id(0);
3040 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
3041 break;
3042 case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
3043 dsidev = dsi_get_dsidev_from_id(1);
3044 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
3045 break;
3046 default:
3047 BUG();
3048 return 0;
3049 }
3050
3051 return r;
3052 }
3053
dispc_mgr_lclk_rate(enum omap_channel channel)3054 unsigned long dispc_mgr_lclk_rate(enum omap_channel channel)
3055 {
3056 struct platform_device *dsidev;
3057 int lcd;
3058 unsigned long r;
3059 u32 l;
3060
3061 if (dss_mgr_is_lcd(channel)) {
3062 l = dispc_read_reg(DISPC_DIVISORo(channel));
3063
3064 lcd = FLD_GET(l, 23, 16);
3065
3066 switch (dss_get_lcd_clk_source(channel)) {
3067 case OMAP_DSS_CLK_SRC_FCK:
3068 r = dss_get_dispc_clk_rate();
3069 break;
3070 case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
3071 dsidev = dsi_get_dsidev_from_id(0);
3072 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
3073 break;
3074 case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
3075 dsidev = dsi_get_dsidev_from_id(1);
3076 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
3077 break;
3078 default:
3079 BUG();
3080 return 0;
3081 }
3082
3083 return r / lcd;
3084 } else {
3085 return dispc_fclk_rate();
3086 }
3087 }
3088
dispc_mgr_pclk_rate(enum omap_channel channel)3089 unsigned long dispc_mgr_pclk_rate(enum omap_channel channel)
3090 {
3091 unsigned long r;
3092
3093 if (dss_mgr_is_lcd(channel)) {
3094 int pcd;
3095 u32 l;
3096
3097 l = dispc_read_reg(DISPC_DIVISORo(channel));
3098
3099 pcd = FLD_GET(l, 7, 0);
3100
3101 r = dispc_mgr_lclk_rate(channel);
3102
3103 return r / pcd;
3104 } else {
3105 return dispc.tv_pclk_rate;
3106 }
3107 }
3108
dispc_set_tv_pclk(unsigned long pclk)3109 void dispc_set_tv_pclk(unsigned long pclk)
3110 {
3111 dispc.tv_pclk_rate = pclk;
3112 }
3113
dispc_core_clk_rate(void)3114 unsigned long dispc_core_clk_rate(void)
3115 {
3116 return dispc.core_clk_rate;
3117 }
3118
dispc_plane_pclk_rate(enum omap_plane plane)3119 static unsigned long dispc_plane_pclk_rate(enum omap_plane plane)
3120 {
3121 enum omap_channel channel;
3122
3123 if (plane == OMAP_DSS_WB)
3124 return 0;
3125
3126 channel = dispc_ovl_get_channel_out(plane);
3127
3128 return dispc_mgr_pclk_rate(channel);
3129 }
3130
dispc_plane_lclk_rate(enum omap_plane plane)3131 static unsigned long dispc_plane_lclk_rate(enum omap_plane plane)
3132 {
3133 enum omap_channel channel;
3134
3135 if (plane == OMAP_DSS_WB)
3136 return 0;
3137
3138 channel = dispc_ovl_get_channel_out(plane);
3139
3140 return dispc_mgr_lclk_rate(channel);
3141 }
3142
dispc_dump_clocks_channel(struct seq_file * s,enum omap_channel channel)3143 static void dispc_dump_clocks_channel(struct seq_file *s, enum omap_channel channel)
3144 {
3145 int lcd, pcd;
3146 enum omap_dss_clk_source lcd_clk_src;
3147
3148 seq_printf(s, "- %s -\n", mgr_desc[channel].name);
3149
3150 lcd_clk_src = dss_get_lcd_clk_source(channel);
3151
3152 seq_printf(s, "%s clk source = %s (%s)\n", mgr_desc[channel].name,
3153 dss_get_generic_clk_source_name(lcd_clk_src),
3154 dss_feat_get_clk_source_name(lcd_clk_src));
3155
3156 dispc_mgr_get_lcd_divisor(channel, &lcd, &pcd);
3157
3158 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3159 dispc_mgr_lclk_rate(channel), lcd);
3160 seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
3161 dispc_mgr_pclk_rate(channel), pcd);
3162 }
3163
dispc_dump_clocks(struct seq_file * s)3164 void dispc_dump_clocks(struct seq_file *s)
3165 {
3166 int lcd;
3167 u32 l;
3168 enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source();
3169
3170 if (dispc_runtime_get())
3171 return;
3172
3173 seq_printf(s, "- DISPC -\n");
3174
3175 seq_printf(s, "dispc fclk source = %s (%s)\n",
3176 dss_get_generic_clk_source_name(dispc_clk_src),
3177 dss_feat_get_clk_source_name(dispc_clk_src));
3178
3179 seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
3180
3181 if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
3182 seq_printf(s, "- DISPC-CORE-CLK -\n");
3183 l = dispc_read_reg(DISPC_DIVISOR);
3184 lcd = FLD_GET(l, 23, 16);
3185
3186 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3187 (dispc_fclk_rate()/lcd), lcd);
3188 }
3189
3190 dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD);
3191
3192 if (dss_has_feature(FEAT_MGR_LCD2))
3193 dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD2);
3194 if (dss_has_feature(FEAT_MGR_LCD3))
3195 dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD3);
3196
3197 dispc_runtime_put();
3198 }
3199
dispc_dump_regs(struct seq_file * s)3200 static void dispc_dump_regs(struct seq_file *s)
3201 {
3202 int i, j;
3203 const char *mgr_names[] = {
3204 [OMAP_DSS_CHANNEL_LCD] = "LCD",
3205 [OMAP_DSS_CHANNEL_DIGIT] = "TV",
3206 [OMAP_DSS_CHANNEL_LCD2] = "LCD2",
3207 [OMAP_DSS_CHANNEL_LCD3] = "LCD3",
3208 };
3209 const char *ovl_names[] = {
3210 [OMAP_DSS_GFX] = "GFX",
3211 [OMAP_DSS_VIDEO1] = "VID1",
3212 [OMAP_DSS_VIDEO2] = "VID2",
3213 [OMAP_DSS_VIDEO3] = "VID3",
3214 };
3215 const char **p_names;
3216
3217 #define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r))
3218
3219 if (dispc_runtime_get())
3220 return;
3221
3222 /* DISPC common registers */
3223 DUMPREG(DISPC_REVISION);
3224 DUMPREG(DISPC_SYSCONFIG);
3225 DUMPREG(DISPC_SYSSTATUS);
3226 DUMPREG(DISPC_IRQSTATUS);
3227 DUMPREG(DISPC_IRQENABLE);
3228 DUMPREG(DISPC_CONTROL);
3229 DUMPREG(DISPC_CONFIG);
3230 DUMPREG(DISPC_CAPABLE);
3231 DUMPREG(DISPC_LINE_STATUS);
3232 DUMPREG(DISPC_LINE_NUMBER);
3233 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
3234 dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
3235 DUMPREG(DISPC_GLOBAL_ALPHA);
3236 if (dss_has_feature(FEAT_MGR_LCD2)) {
3237 DUMPREG(DISPC_CONTROL2);
3238 DUMPREG(DISPC_CONFIG2);
3239 }
3240 if (dss_has_feature(FEAT_MGR_LCD3)) {
3241 DUMPREG(DISPC_CONTROL3);
3242 DUMPREG(DISPC_CONFIG3);
3243 }
3244 if (dss_has_feature(FEAT_MFLAG))
3245 DUMPREG(DISPC_GLOBAL_MFLAG_ATTRIBUTE);
3246
3247 #undef DUMPREG
3248
3249 #define DISPC_REG(i, name) name(i)
3250 #define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
3251 (int)(48 - strlen(#r) - strlen(p_names[i])), " ", \
3252 dispc_read_reg(DISPC_REG(i, r)))
3253
3254 p_names = mgr_names;
3255
3256 /* DISPC channel specific registers */
3257 for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
3258 DUMPREG(i, DISPC_DEFAULT_COLOR);
3259 DUMPREG(i, DISPC_TRANS_COLOR);
3260 DUMPREG(i, DISPC_SIZE_MGR);
3261
3262 if (i == OMAP_DSS_CHANNEL_DIGIT)
3263 continue;
3264
3265 DUMPREG(i, DISPC_TIMING_H);
3266 DUMPREG(i, DISPC_TIMING_V);
3267 DUMPREG(i, DISPC_POL_FREQ);
3268 DUMPREG(i, DISPC_DIVISORo);
3269
3270 DUMPREG(i, DISPC_DATA_CYCLE1);
3271 DUMPREG(i, DISPC_DATA_CYCLE2);
3272 DUMPREG(i, DISPC_DATA_CYCLE3);
3273
3274 if (dss_has_feature(FEAT_CPR)) {
3275 DUMPREG(i, DISPC_CPR_COEF_R);
3276 DUMPREG(i, DISPC_CPR_COEF_G);
3277 DUMPREG(i, DISPC_CPR_COEF_B);
3278 }
3279 }
3280
3281 p_names = ovl_names;
3282
3283 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
3284 DUMPREG(i, DISPC_OVL_BA0);
3285 DUMPREG(i, DISPC_OVL_BA1);
3286 DUMPREG(i, DISPC_OVL_POSITION);
3287 DUMPREG(i, DISPC_OVL_SIZE);
3288 DUMPREG(i, DISPC_OVL_ATTRIBUTES);
3289 DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD);
3290 DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS);
3291 DUMPREG(i, DISPC_OVL_ROW_INC);
3292 DUMPREG(i, DISPC_OVL_PIXEL_INC);
3293
3294 if (dss_has_feature(FEAT_PRELOAD))
3295 DUMPREG(i, DISPC_OVL_PRELOAD);
3296 if (dss_has_feature(FEAT_MFLAG))
3297 DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD);
3298
3299 if (i == OMAP_DSS_GFX) {
3300 DUMPREG(i, DISPC_OVL_WINDOW_SKIP);
3301 DUMPREG(i, DISPC_OVL_TABLE_BA);
3302 continue;
3303 }
3304
3305 DUMPREG(i, DISPC_OVL_FIR);
3306 DUMPREG(i, DISPC_OVL_PICTURE_SIZE);
3307 DUMPREG(i, DISPC_OVL_ACCU0);
3308 DUMPREG(i, DISPC_OVL_ACCU1);
3309 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
3310 DUMPREG(i, DISPC_OVL_BA0_UV);
3311 DUMPREG(i, DISPC_OVL_BA1_UV);
3312 DUMPREG(i, DISPC_OVL_FIR2);
3313 DUMPREG(i, DISPC_OVL_ACCU2_0);
3314 DUMPREG(i, DISPC_OVL_ACCU2_1);
3315 }
3316 if (dss_has_feature(FEAT_ATTR2))
3317 DUMPREG(i, DISPC_OVL_ATTRIBUTES2);
3318 }
3319
3320 #undef DISPC_REG
3321 #undef DUMPREG
3322
3323 #define DISPC_REG(plane, name, i) name(plane, i)
3324 #define DUMPREG(plane, name, i) \
3325 seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
3326 (int)(46 - strlen(#name) - strlen(p_names[plane])), " ", \
3327 dispc_read_reg(DISPC_REG(plane, name, i)))
3328
3329 /* Video pipeline coefficient registers */
3330
3331 /* start from OMAP_DSS_VIDEO1 */
3332 for (i = 1; i < dss_feat_get_num_ovls(); i++) {
3333 for (j = 0; j < 8; j++)
3334 DUMPREG(i, DISPC_OVL_FIR_COEF_H, j);
3335
3336 for (j = 0; j < 8; j++)
3337 DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j);
3338
3339 for (j = 0; j < 5; j++)
3340 DUMPREG(i, DISPC_OVL_CONV_COEF, j);
3341
3342 if (dss_has_feature(FEAT_FIR_COEF_V)) {
3343 for (j = 0; j < 8; j++)
3344 DUMPREG(i, DISPC_OVL_FIR_COEF_V, j);
3345 }
3346
3347 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
3348 for (j = 0; j < 8; j++)
3349 DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j);
3350
3351 for (j = 0; j < 8; j++)
3352 DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j);
3353
3354 for (j = 0; j < 8; j++)
3355 DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j);
3356 }
3357 }
3358
3359 dispc_runtime_put();
3360
3361 #undef DISPC_REG
3362 #undef DUMPREG
3363 }
3364
3365 /* calculate clock rates using dividers in cinfo */
dispc_calc_clock_rates(unsigned long dispc_fclk_rate,struct dispc_clock_info * cinfo)3366 int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
3367 struct dispc_clock_info *cinfo)
3368 {
3369 if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
3370 return -EINVAL;
3371 if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
3372 return -EINVAL;
3373
3374 cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
3375 cinfo->pck = cinfo->lck / cinfo->pck_div;
3376
3377 return 0;
3378 }
3379
dispc_div_calc(unsigned long dispc,unsigned long pck_min,unsigned long pck_max,dispc_div_calc_func func,void * data)3380 bool dispc_div_calc(unsigned long dispc,
3381 unsigned long pck_min, unsigned long pck_max,
3382 dispc_div_calc_func func, void *data)
3383 {
3384 int lckd, lckd_start, lckd_stop;
3385 int pckd, pckd_start, pckd_stop;
3386 unsigned long pck, lck;
3387 unsigned long lck_max;
3388 unsigned long pckd_hw_min, pckd_hw_max;
3389 unsigned min_fck_per_pck;
3390 unsigned long fck;
3391
3392 #ifdef CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK
3393 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
3394 #else
3395 min_fck_per_pck = 0;
3396 #endif
3397
3398 pckd_hw_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
3399 pckd_hw_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
3400
3401 lck_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
3402
3403 pck_min = pck_min ? pck_min : 1;
3404 pck_max = pck_max ? pck_max : ULONG_MAX;
3405
3406 lckd_start = max(DIV_ROUND_UP(dispc, lck_max), 1ul);
3407 lckd_stop = min(dispc / pck_min, 255ul);
3408
3409 for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) {
3410 lck = dispc / lckd;
3411
3412 pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min);
3413 pckd_stop = min(lck / pck_min, pckd_hw_max);
3414
3415 for (pckd = pckd_start; pckd <= pckd_stop; ++pckd) {
3416 pck = lck / pckd;
3417
3418 /*
3419 * For OMAP2/3 the DISPC fclk is the same as LCD's logic
3420 * clock, which means we're configuring DISPC fclk here
3421 * also. Thus we need to use the calculated lck. For
3422 * OMAP4+ the DISPC fclk is a separate clock.
3423 */
3424 if (dss_has_feature(FEAT_CORE_CLK_DIV))
3425 fck = dispc_core_clk_rate();
3426 else
3427 fck = lck;
3428
3429 if (fck < pck * min_fck_per_pck)
3430 continue;
3431
3432 if (func(lckd, pckd, lck, pck, data))
3433 return true;
3434 }
3435 }
3436
3437 return false;
3438 }
3439
dispc_mgr_set_clock_div(enum omap_channel channel,const struct dispc_clock_info * cinfo)3440 void dispc_mgr_set_clock_div(enum omap_channel channel,
3441 const struct dispc_clock_info *cinfo)
3442 {
3443 DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
3444 DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
3445
3446 dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
3447 }
3448
dispc_mgr_get_clock_div(enum omap_channel channel,struct dispc_clock_info * cinfo)3449 int dispc_mgr_get_clock_div(enum omap_channel channel,
3450 struct dispc_clock_info *cinfo)
3451 {
3452 unsigned long fck;
3453
3454 fck = dispc_fclk_rate();
3455
3456 cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16);
3457 cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0);
3458
3459 cinfo->lck = fck / cinfo->lck_div;
3460 cinfo->pck = cinfo->lck / cinfo->pck_div;
3461
3462 return 0;
3463 }
3464
dispc_read_irqstatus(void)3465 u32 dispc_read_irqstatus(void)
3466 {
3467 return dispc_read_reg(DISPC_IRQSTATUS);
3468 }
3469 EXPORT_SYMBOL(dispc_read_irqstatus);
3470
dispc_clear_irqstatus(u32 mask)3471 void dispc_clear_irqstatus(u32 mask)
3472 {
3473 dispc_write_reg(DISPC_IRQSTATUS, mask);
3474 }
3475 EXPORT_SYMBOL(dispc_clear_irqstatus);
3476
dispc_read_irqenable(void)3477 u32 dispc_read_irqenable(void)
3478 {
3479 return dispc_read_reg(DISPC_IRQENABLE);
3480 }
3481 EXPORT_SYMBOL(dispc_read_irqenable);
3482
dispc_write_irqenable(u32 mask)3483 void dispc_write_irqenable(u32 mask)
3484 {
3485 u32 old_mask = dispc_read_reg(DISPC_IRQENABLE);
3486
3487 /* clear the irqstatus for newly enabled irqs */
3488 dispc_clear_irqstatus((mask ^ old_mask) & mask);
3489
3490 dispc_write_reg(DISPC_IRQENABLE, mask);
3491 }
3492 EXPORT_SYMBOL(dispc_write_irqenable);
3493
dispc_enable_sidle(void)3494 void dispc_enable_sidle(void)
3495 {
3496 REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */
3497 }
3498
dispc_disable_sidle(void)3499 void dispc_disable_sidle(void)
3500 {
3501 REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */
3502 }
3503
_omap_dispc_initial_config(void)3504 static void _omap_dispc_initial_config(void)
3505 {
3506 u32 l;
3507
3508 /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
3509 if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
3510 l = dispc_read_reg(DISPC_DIVISOR);
3511 /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
3512 l = FLD_MOD(l, 1, 0, 0);
3513 l = FLD_MOD(l, 1, 23, 16);
3514 dispc_write_reg(DISPC_DIVISOR, l);
3515
3516 dispc.core_clk_rate = dispc_fclk_rate();
3517 }
3518
3519 /* FUNCGATED */
3520 if (dss_has_feature(FEAT_FUNCGATED))
3521 REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9);
3522
3523 dispc_setup_color_conv_coef();
3524
3525 dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY);
3526
3527 dispc_init_fifos();
3528
3529 dispc_configure_burst_sizes();
3530
3531 dispc_ovl_enable_zorder_planes();
3532
3533 if (dispc.feat->mstandby_workaround)
3534 REG_FLD_MOD(DISPC_MSTANDBY_CTRL, 1, 0, 0);
3535 }
3536
3537 static const struct dispc_features omap24xx_dispc_feats __initconst = {
3538 .sw_start = 5,
3539 .fp_start = 15,
3540 .bp_start = 27,
3541 .sw_max = 64,
3542 .vp_max = 255,
3543 .hp_max = 256,
3544 .mgr_width_start = 10,
3545 .mgr_height_start = 26,
3546 .mgr_width_max = 2048,
3547 .mgr_height_max = 2048,
3548 .max_lcd_pclk = 66500000,
3549 .calc_scaling = dispc_ovl_calc_scaling_24xx,
3550 .calc_core_clk = calc_core_clk_24xx,
3551 .num_fifos = 3,
3552 .no_framedone_tv = true,
3553 .set_max_preload = false,
3554 };
3555
3556 static const struct dispc_features omap34xx_rev1_0_dispc_feats __initconst = {
3557 .sw_start = 5,
3558 .fp_start = 15,
3559 .bp_start = 27,
3560 .sw_max = 64,
3561 .vp_max = 255,
3562 .hp_max = 256,
3563 .mgr_width_start = 10,
3564 .mgr_height_start = 26,
3565 .mgr_width_max = 2048,
3566 .mgr_height_max = 2048,
3567 .max_lcd_pclk = 173000000,
3568 .max_tv_pclk = 59000000,
3569 .calc_scaling = dispc_ovl_calc_scaling_34xx,
3570 .calc_core_clk = calc_core_clk_34xx,
3571 .num_fifos = 3,
3572 .no_framedone_tv = true,
3573 .set_max_preload = false,
3574 };
3575
3576 static const struct dispc_features omap34xx_rev3_0_dispc_feats __initconst = {
3577 .sw_start = 7,
3578 .fp_start = 19,
3579 .bp_start = 31,
3580 .sw_max = 256,
3581 .vp_max = 4095,
3582 .hp_max = 4096,
3583 .mgr_width_start = 10,
3584 .mgr_height_start = 26,
3585 .mgr_width_max = 2048,
3586 .mgr_height_max = 2048,
3587 .max_lcd_pclk = 173000000,
3588 .max_tv_pclk = 59000000,
3589 .calc_scaling = dispc_ovl_calc_scaling_34xx,
3590 .calc_core_clk = calc_core_clk_34xx,
3591 .num_fifos = 3,
3592 .no_framedone_tv = true,
3593 .set_max_preload = false,
3594 };
3595
3596 static const struct dispc_features omap44xx_dispc_feats __initconst = {
3597 .sw_start = 7,
3598 .fp_start = 19,
3599 .bp_start = 31,
3600 .sw_max = 256,
3601 .vp_max = 4095,
3602 .hp_max = 4096,
3603 .mgr_width_start = 10,
3604 .mgr_height_start = 26,
3605 .mgr_width_max = 2048,
3606 .mgr_height_max = 2048,
3607 .max_lcd_pclk = 170000000,
3608 .max_tv_pclk = 185625000,
3609 .calc_scaling = dispc_ovl_calc_scaling_44xx,
3610 .calc_core_clk = calc_core_clk_44xx,
3611 .num_fifos = 5,
3612 .gfx_fifo_workaround = true,
3613 .set_max_preload = true,
3614 };
3615
3616 static const struct dispc_features omap54xx_dispc_feats __initconst = {
3617 .sw_start = 7,
3618 .fp_start = 19,
3619 .bp_start = 31,
3620 .sw_max = 256,
3621 .vp_max = 4095,
3622 .hp_max = 4096,
3623 .mgr_width_start = 11,
3624 .mgr_height_start = 27,
3625 .mgr_width_max = 4096,
3626 .mgr_height_max = 4096,
3627 .max_lcd_pclk = 170000000,
3628 .max_tv_pclk = 186000000,
3629 .calc_scaling = dispc_ovl_calc_scaling_44xx,
3630 .calc_core_clk = calc_core_clk_44xx,
3631 .num_fifos = 5,
3632 .gfx_fifo_workaround = true,
3633 .mstandby_workaround = true,
3634 .set_max_preload = true,
3635 };
3636
dispc_init_features(struct platform_device * pdev)3637 static int __init dispc_init_features(struct platform_device *pdev)
3638 {
3639 const struct dispc_features *src;
3640 struct dispc_features *dst;
3641
3642 dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
3643 if (!dst) {
3644 dev_err(&pdev->dev, "Failed to allocate DISPC Features\n");
3645 return -ENOMEM;
3646 }
3647
3648 switch (omapdss_get_version()) {
3649 case OMAPDSS_VER_OMAP24xx:
3650 src = &omap24xx_dispc_feats;
3651 break;
3652
3653 case OMAPDSS_VER_OMAP34xx_ES1:
3654 src = &omap34xx_rev1_0_dispc_feats;
3655 break;
3656
3657 case OMAPDSS_VER_OMAP34xx_ES3:
3658 case OMAPDSS_VER_OMAP3630:
3659 case OMAPDSS_VER_AM35xx:
3660 case OMAPDSS_VER_AM43xx:
3661 src = &omap34xx_rev3_0_dispc_feats;
3662 break;
3663
3664 case OMAPDSS_VER_OMAP4430_ES1:
3665 case OMAPDSS_VER_OMAP4430_ES2:
3666 case OMAPDSS_VER_OMAP4:
3667 src = &omap44xx_dispc_feats;
3668 break;
3669
3670 case OMAPDSS_VER_OMAP5:
3671 src = &omap54xx_dispc_feats;
3672 break;
3673
3674 default:
3675 return -ENODEV;
3676 }
3677
3678 memcpy(dst, src, sizeof(*dst));
3679 dispc.feat = dst;
3680
3681 return 0;
3682 }
3683
dispc_irq_handler(int irq,void * arg)3684 static irqreturn_t dispc_irq_handler(int irq, void *arg)
3685 {
3686 if (!dispc.is_enabled)
3687 return IRQ_NONE;
3688
3689 return dispc.user_handler(irq, dispc.user_data);
3690 }
3691
dispc_request_irq(irq_handler_t handler,void * dev_id)3692 int dispc_request_irq(irq_handler_t handler, void *dev_id)
3693 {
3694 int r;
3695
3696 if (dispc.user_handler != NULL)
3697 return -EBUSY;
3698
3699 dispc.user_handler = handler;
3700 dispc.user_data = dev_id;
3701
3702 /* ensure the dispc_irq_handler sees the values above */
3703 smp_wmb();
3704
3705 r = devm_request_irq(&dispc.pdev->dev, dispc.irq, dispc_irq_handler,
3706 IRQF_SHARED, "OMAP DISPC", &dispc);
3707 if (r) {
3708 dispc.user_handler = NULL;
3709 dispc.user_data = NULL;
3710 }
3711
3712 return r;
3713 }
3714 EXPORT_SYMBOL(dispc_request_irq);
3715
dispc_free_irq(void * dev_id)3716 void dispc_free_irq(void *dev_id)
3717 {
3718 devm_free_irq(&dispc.pdev->dev, dispc.irq, &dispc);
3719
3720 dispc.user_handler = NULL;
3721 dispc.user_data = NULL;
3722 }
3723 EXPORT_SYMBOL(dispc_free_irq);
3724
3725 /* DISPC HW IP initialisation */
omap_dispchw_probe(struct platform_device * pdev)3726 static int __init omap_dispchw_probe(struct platform_device *pdev)
3727 {
3728 u32 rev;
3729 int r = 0;
3730 struct resource *dispc_mem;
3731
3732 dispc.pdev = pdev;
3733
3734 r = dispc_init_features(dispc.pdev);
3735 if (r)
3736 return r;
3737
3738 dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0);
3739 if (!dispc_mem) {
3740 DSSERR("can't get IORESOURCE_MEM DISPC\n");
3741 return -EINVAL;
3742 }
3743
3744 dispc.base = devm_ioremap(&pdev->dev, dispc_mem->start,
3745 resource_size(dispc_mem));
3746 if (!dispc.base) {
3747 DSSERR("can't ioremap DISPC\n");
3748 return -ENOMEM;
3749 }
3750
3751 dispc.irq = platform_get_irq(dispc.pdev, 0);
3752 if (dispc.irq < 0) {
3753 DSSERR("platform_get_irq failed\n");
3754 return -ENODEV;
3755 }
3756
3757 pm_runtime_enable(&pdev->dev);
3758
3759 r = dispc_runtime_get();
3760 if (r)
3761 goto err_runtime_get;
3762
3763 _omap_dispc_initial_config();
3764
3765 rev = dispc_read_reg(DISPC_REVISION);
3766 dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
3767 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
3768
3769 dispc_runtime_put();
3770
3771 dss_init_overlay_managers();
3772
3773 dss_debugfs_create_file("dispc", dispc_dump_regs);
3774
3775 return 0;
3776
3777 err_runtime_get:
3778 pm_runtime_disable(&pdev->dev);
3779 return r;
3780 }
3781
omap_dispchw_remove(struct platform_device * pdev)3782 static int __exit omap_dispchw_remove(struct platform_device *pdev)
3783 {
3784 pm_runtime_disable(&pdev->dev);
3785
3786 dss_uninit_overlay_managers();
3787
3788 return 0;
3789 }
3790
dispc_runtime_suspend(struct device * dev)3791 static int dispc_runtime_suspend(struct device *dev)
3792 {
3793 dispc.is_enabled = false;
3794 /* ensure the dispc_irq_handler sees the is_enabled value */
3795 smp_wmb();
3796 /* wait for current handler to finish before turning the DISPC off */
3797 synchronize_irq(dispc.irq);
3798
3799 dispc_save_context();
3800
3801 return 0;
3802 }
3803
dispc_runtime_resume(struct device * dev)3804 static int dispc_runtime_resume(struct device *dev)
3805 {
3806 /*
3807 * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME)
3808 * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in
3809 * _omap_dispc_initial_config(). We can thus use it to detect if
3810 * we have lost register context.
3811 */
3812 if (REG_GET(DISPC_CONFIG, 2, 1) != OMAP_DSS_LOAD_FRAME_ONLY) {
3813 _omap_dispc_initial_config();
3814
3815 dispc_restore_context();
3816 }
3817
3818 dispc.is_enabled = true;
3819 /* ensure the dispc_irq_handler sees the is_enabled value */
3820 smp_wmb();
3821
3822 return 0;
3823 }
3824
3825 static const struct dev_pm_ops dispc_pm_ops = {
3826 .runtime_suspend = dispc_runtime_suspend,
3827 .runtime_resume = dispc_runtime_resume,
3828 };
3829
3830 static const struct of_device_id dispc_of_match[] = {
3831 { .compatible = "ti,omap2-dispc", },
3832 { .compatible = "ti,omap3-dispc", },
3833 { .compatible = "ti,omap4-dispc", },
3834 { .compatible = "ti,omap5-dispc", },
3835 {},
3836 };
3837
3838 static struct platform_driver omap_dispchw_driver = {
3839 .remove = __exit_p(omap_dispchw_remove),
3840 .driver = {
3841 .name = "omapdss_dispc",
3842 .owner = THIS_MODULE,
3843 .pm = &dispc_pm_ops,
3844 .of_match_table = dispc_of_match,
3845 .suppress_bind_attrs = true,
3846 },
3847 };
3848
dispc_init_platform_driver(void)3849 int __init dispc_init_platform_driver(void)
3850 {
3851 return platform_driver_probe(&omap_dispchw_driver, omap_dispchw_probe);
3852 }
3853
dispc_uninit_platform_driver(void)3854 void __exit dispc_uninit_platform_driver(void)
3855 {
3856 platform_driver_unregister(&omap_dispchw_driver);
3857 }
3858