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11#include <linux/atomic.h>
12#include <linux/backlight.h>
13#include <linux/clk.h>
14#include <linux/console.h>
15#include <linux/ctype.h>
16#include <linux/dma-mapping.h>
17#include <linux/delay.h>
18#include <linux/fbcon.h>
19#include <linux/gpio.h>
20#include <linux/init.h>
21#include <linux/interrupt.h>
22#include <linux/ioctl.h>
23#include <linux/kernel.h>
24#include <linux/mm.h>
25#include <linux/module.h>
26#include <linux/platform_device.h>
27#include <linux/pm_runtime.h>
28#include <linux/slab.h>
29#include <linux/videodev2.h>
30#include <linux/vmalloc.h>
31
32#include <video/sh_mobile_lcdc.h>
33
34#include "sh_mobile_lcdcfb.h"
35
36
37
38
39
40#define LDBCR 0xb00
41#define LDBCR_UPC(n) (1 << ((n) + 16))
42#define LDBCR_UPF(n) (1 << ((n) + 8))
43#define LDBCR_UPD(n) (1 << ((n) + 0))
44#define LDBnBSIFR(n) (0xb20 + (n) * 0x20 + 0x00)
45#define LDBBSIFR_EN (1 << 31)
46#define LDBBSIFR_VS (1 << 29)
47#define LDBBSIFR_BRSEL (1 << 28)
48#define LDBBSIFR_MX (1 << 27)
49#define LDBBSIFR_MY (1 << 26)
50#define LDBBSIFR_CV3 (3 << 24)
51#define LDBBSIFR_CV2 (2 << 24)
52#define LDBBSIFR_CV1 (1 << 24)
53#define LDBBSIFR_CV0 (0 << 24)
54#define LDBBSIFR_CV_MASK (3 << 24)
55#define LDBBSIFR_LAY_MASK (0xff << 16)
56#define LDBBSIFR_LAY_SHIFT 16
57#define LDBBSIFR_ROP3_MASK (0xff << 16)
58#define LDBBSIFR_ROP3_SHIFT 16
59#define LDBBSIFR_AL_PL8 (3 << 14)
60#define LDBBSIFR_AL_PL1 (2 << 14)
61#define LDBBSIFR_AL_PK (1 << 14)
62#define LDBBSIFR_AL_1 (0 << 14)
63#define LDBBSIFR_AL_MASK (3 << 14)
64#define LDBBSIFR_SWPL (1 << 10)
65#define LDBBSIFR_SWPW (1 << 9)
66#define LDBBSIFR_SWPB (1 << 8)
67#define LDBBSIFR_RY (1 << 7)
68#define LDBBSIFR_CHRR_420 (2 << 0)
69#define LDBBSIFR_CHRR_422 (1 << 0)
70#define LDBBSIFR_CHRR_444 (0 << 0)
71#define LDBBSIFR_RPKF_ARGB32 (0x00 << 0)
72#define LDBBSIFR_RPKF_RGB16 (0x03 << 0)
73#define LDBBSIFR_RPKF_RGB24 (0x0b << 0)
74#define LDBBSIFR_RPKF_MASK (0x1f << 0)
75#define LDBnBSSZR(n) (0xb20 + (n) * 0x20 + 0x04)
76#define LDBBSSZR_BVSS_MASK (0xfff << 16)
77#define LDBBSSZR_BVSS_SHIFT 16
78#define LDBBSSZR_BHSS_MASK (0xfff << 0)
79#define LDBBSSZR_BHSS_SHIFT 0
80#define LDBnBLOCR(n) (0xb20 + (n) * 0x20 + 0x08)
81#define LDBBLOCR_CVLC_MASK (0xfff << 16)
82#define LDBBLOCR_CVLC_SHIFT 16
83#define LDBBLOCR_CHLC_MASK (0xfff << 0)
84#define LDBBLOCR_CHLC_SHIFT 0
85#define LDBnBSMWR(n) (0xb20 + (n) * 0x20 + 0x0c)
86#define LDBBSMWR_BSMWA_MASK (0xffff << 16)
87#define LDBBSMWR_BSMWA_SHIFT 16
88#define LDBBSMWR_BSMW_MASK (0xffff << 0)
89#define LDBBSMWR_BSMW_SHIFT 0
90#define LDBnBSAYR(n) (0xb20 + (n) * 0x20 + 0x10)
91#define LDBBSAYR_FG1A_MASK (0xff << 24)
92#define LDBBSAYR_FG1A_SHIFT 24
93#define LDBBSAYR_FG1R_MASK (0xff << 16)
94#define LDBBSAYR_FG1R_SHIFT 16
95#define LDBBSAYR_FG1G_MASK (0xff << 8)
96#define LDBBSAYR_FG1G_SHIFT 8
97#define LDBBSAYR_FG1B_MASK (0xff << 0)
98#define LDBBSAYR_FG1B_SHIFT 0
99#define LDBnBSACR(n) (0xb20 + (n) * 0x20 + 0x14)
100#define LDBBSACR_FG2A_MASK (0xff << 24)
101#define LDBBSACR_FG2A_SHIFT 24
102#define LDBBSACR_FG2R_MASK (0xff << 16)
103#define LDBBSACR_FG2R_SHIFT 16
104#define LDBBSACR_FG2G_MASK (0xff << 8)
105#define LDBBSACR_FG2G_SHIFT 8
106#define LDBBSACR_FG2B_MASK (0xff << 0)
107#define LDBBSACR_FG2B_SHIFT 0
108#define LDBnBSAAR(n) (0xb20 + (n) * 0x20 + 0x18)
109#define LDBBSAAR_AP_MASK (0xff << 24)
110#define LDBBSAAR_AP_SHIFT 24
111#define LDBBSAAR_R_MASK (0xff << 16)
112#define LDBBSAAR_R_SHIFT 16
113#define LDBBSAAR_GY_MASK (0xff << 8)
114#define LDBBSAAR_GY_SHIFT 8
115#define LDBBSAAR_B_MASK (0xff << 0)
116#define LDBBSAAR_B_SHIFT 0
117#define LDBnBPPCR(n) (0xb20 + (n) * 0x20 + 0x1c)
118#define LDBBPPCR_AP_MASK (0xff << 24)
119#define LDBBPPCR_AP_SHIFT 24
120#define LDBBPPCR_R_MASK (0xff << 16)
121#define LDBBPPCR_R_SHIFT 16
122#define LDBBPPCR_GY_MASK (0xff << 8)
123#define LDBBPPCR_GY_SHIFT 8
124#define LDBBPPCR_B_MASK (0xff << 0)
125#define LDBBPPCR_B_SHIFT 0
126#define LDBnBBGCL(n) (0xb10 + (n) * 0x04)
127#define LDBBBGCL_BGA_MASK (0xff << 24)
128#define LDBBBGCL_BGA_SHIFT 24
129#define LDBBBGCL_BGR_MASK (0xff << 16)
130#define LDBBBGCL_BGR_SHIFT 16
131#define LDBBBGCL_BGG_MASK (0xff << 8)
132#define LDBBBGCL_BGG_SHIFT 8
133#define LDBBBGCL_BGB_MASK (0xff << 0)
134#define LDBBBGCL_BGB_SHIFT 0
135
136#define SIDE_B_OFFSET 0x1000
137#define MIRROR_OFFSET 0x2000
138
139#define MAX_XRES 1920
140#define MAX_YRES 1080
141
142enum sh_mobile_lcdc_overlay_mode {
143 LCDC_OVERLAY_BLEND,
144 LCDC_OVERLAY_ROP3,
145};
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174struct sh_mobile_lcdc_overlay {
175 struct sh_mobile_lcdc_chan *channel;
176
177 const struct sh_mobile_lcdc_overlay_cfg *cfg;
178 struct fb_info *info;
179
180 unsigned int index;
181 unsigned long base;
182
183 bool enabled;
184 enum sh_mobile_lcdc_overlay_mode mode;
185 unsigned int alpha;
186 unsigned int rop3;
187
188 void *fb_mem;
189 unsigned long fb_size;
190
191 dma_addr_t dma_handle;
192 unsigned long base_addr_y;
193 unsigned long base_addr_c;
194 unsigned long pan_y_offset;
195
196 const struct sh_mobile_lcdc_format_info *format;
197 unsigned int xres;
198 unsigned int xres_virtual;
199 unsigned int yres;
200 unsigned int yres_virtual;
201 unsigned int pitch;
202 int pos_x;
203 int pos_y;
204};
205
206struct sh_mobile_lcdc_priv {
207 void __iomem *base;
208 int irq;
209 atomic_t hw_usecnt;
210 struct device *dev;
211 struct clk *dot_clk;
212 unsigned long lddckr;
213
214 struct sh_mobile_lcdc_chan ch[2];
215 struct sh_mobile_lcdc_overlay overlays[4];
216
217 int started;
218 int forced_fourcc;
219};
220
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223
224
225static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
226 [LDDCKPAT1R] = 0x400,
227 [LDDCKPAT2R] = 0x404,
228 [LDMT1R] = 0x418,
229 [LDMT2R] = 0x41c,
230 [LDMT3R] = 0x420,
231 [LDDFR] = 0x424,
232 [LDSM1R] = 0x428,
233 [LDSM2R] = 0x42c,
234 [LDSA1R] = 0x430,
235 [LDSA2R] = 0x434,
236 [LDMLSR] = 0x438,
237 [LDHCNR] = 0x448,
238 [LDHSYNR] = 0x44c,
239 [LDVLNR] = 0x450,
240 [LDVSYNR] = 0x454,
241 [LDPMR] = 0x460,
242 [LDHAJR] = 0x4a0,
243};
244
245static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = {
246 [LDDCKPAT1R] = 0x408,
247 [LDDCKPAT2R] = 0x40c,
248 [LDMT1R] = 0x600,
249 [LDMT2R] = 0x604,
250 [LDMT3R] = 0x608,
251 [LDDFR] = 0x60c,
252 [LDSM1R] = 0x610,
253 [LDSM2R] = 0x614,
254 [LDSA1R] = 0x618,
255 [LDMLSR] = 0x620,
256 [LDHCNR] = 0x624,
257 [LDHSYNR] = 0x628,
258 [LDVLNR] = 0x62c,
259 [LDVSYNR] = 0x630,
260 [LDPMR] = 0x63c,
261};
262
263static bool banked(int reg_nr)
264{
265 switch (reg_nr) {
266 case LDMT1R:
267 case LDMT2R:
268 case LDMT3R:
269 case LDDFR:
270 case LDSM1R:
271 case LDSA1R:
272 case LDSA2R:
273 case LDMLSR:
274 case LDHCNR:
275 case LDHSYNR:
276 case LDVLNR:
277 case LDVSYNR:
278 return true;
279 }
280 return false;
281}
282
283static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan)
284{
285 return chan->cfg->chan == LCDC_CHAN_SUBLCD;
286}
287
288static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan,
289 int reg_nr, unsigned long data)
290{
291 iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]);
292 if (banked(reg_nr))
293 iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
294 SIDE_B_OFFSET);
295}
296
297static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan,
298 int reg_nr, unsigned long data)
299{
300 iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
301 MIRROR_OFFSET);
302}
303
304static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan,
305 int reg_nr)
306{
307 return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]);
308}
309
310static void lcdc_write_overlay(struct sh_mobile_lcdc_overlay *ovl,
311 int reg, unsigned long data)
312{
313 iowrite32(data, ovl->channel->lcdc->base + reg);
314 iowrite32(data, ovl->channel->lcdc->base + reg + SIDE_B_OFFSET);
315}
316
317static void lcdc_write(struct sh_mobile_lcdc_priv *priv,
318 unsigned long reg_offs, unsigned long data)
319{
320 iowrite32(data, priv->base + reg_offs);
321}
322
323static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv,
324 unsigned long reg_offs)
325{
326 return ioread32(priv->base + reg_offs);
327}
328
329static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv,
330 unsigned long reg_offs,
331 unsigned long mask, unsigned long until)
332{
333 while ((lcdc_read(priv, reg_offs) & mask) != until)
334 cpu_relax();
335}
336
337
338
339
340
341static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv)
342{
343 if (atomic_inc_and_test(&priv->hw_usecnt)) {
344 if (priv->dot_clk)
345 clk_prepare_enable(priv->dot_clk);
346 pm_runtime_get_sync(priv->dev);
347 }
348}
349
350static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv)
351{
352 if (atomic_sub_return(1, &priv->hw_usecnt) == -1) {
353 pm_runtime_put(priv->dev);
354 if (priv->dot_clk)
355 clk_disable_unprepare(priv->dot_clk);
356 }
357}
358
359static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv,
360 int clock_source)
361{
362 struct clk *clk;
363 char *str;
364
365 switch (clock_source) {
366 case LCDC_CLK_BUS:
367 str = "bus_clk";
368 priv->lddckr = LDDCKR_ICKSEL_BUS;
369 break;
370 case LCDC_CLK_PERIPHERAL:
371 str = "peripheral_clk";
372 priv->lddckr = LDDCKR_ICKSEL_MIPI;
373 break;
374 case LCDC_CLK_EXTERNAL:
375 str = NULL;
376 priv->lddckr = LDDCKR_ICKSEL_HDMI;
377 break;
378 default:
379 return -EINVAL;
380 }
381
382 if (str == NULL)
383 return 0;
384
385 clk = clk_get(priv->dev, str);
386 if (IS_ERR(clk)) {
387 dev_err(priv->dev, "cannot get dot clock %s\n", str);
388 return PTR_ERR(clk);
389 }
390
391 priv->dot_clk = clk;
392 return 0;
393}
394
395
396
397
398
399static void lcdc_sys_write_index(void *handle, unsigned long data)
400{
401 struct sh_mobile_lcdc_chan *ch = handle;
402
403 lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT);
404 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
405 lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
406 (lcdc_chan_is_sublcd(ch) ? 2 : 0));
407 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
408}
409
410static void lcdc_sys_write_data(void *handle, unsigned long data)
411{
412 struct sh_mobile_lcdc_chan *ch = handle;
413
414 lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW);
415 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
416 lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
417 (lcdc_chan_is_sublcd(ch) ? 2 : 0));
418 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
419}
420
421static unsigned long lcdc_sys_read_data(void *handle)
422{
423 struct sh_mobile_lcdc_chan *ch = handle;
424
425 lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR);
426 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
427 lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA |
428 (lcdc_chan_is_sublcd(ch) ? 2 : 0));
429 udelay(1);
430 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
431
432 return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK;
433}
434
435static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = {
436 .write_index = lcdc_sys_write_index,
437 .write_data = lcdc_sys_write_data,
438 .read_data = lcdc_sys_read_data,
439};
440
441static int sh_mobile_lcdc_sginit(struct fb_info *info,
442 struct list_head *pagelist)
443{
444 struct sh_mobile_lcdc_chan *ch = info->par;
445 unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT;
446 struct page *page;
447 int nr_pages = 0;
448
449 sg_init_table(ch->sglist, nr_pages_max);
450
451 list_for_each_entry(page, pagelist, lru)
452 sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0);
453
454 return nr_pages;
455}
456
457static void sh_mobile_lcdc_deferred_io(struct fb_info *info,
458 struct list_head *pagelist)
459{
460 struct sh_mobile_lcdc_chan *ch = info->par;
461 const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
462
463
464 sh_mobile_lcdc_clk_on(ch->lcdc);
465
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479
480
481 if (!list_empty(pagelist)) {
482 unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist);
483
484
485 dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE);
486 if (panel->start_transfer)
487 panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
488 lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
489 dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages,
490 DMA_TO_DEVICE);
491 } else {
492 if (panel->start_transfer)
493 panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
494 lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
495 }
496}
497
498static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info)
499{
500 struct fb_deferred_io *fbdefio = info->fbdefio;
501
502 if (fbdefio)
503 schedule_delayed_work(&info->deferred_work, fbdefio->delay);
504}
505
506static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch)
507{
508 const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
509
510 if (ch->tx_dev) {
511 int ret;
512
513 ret = ch->tx_dev->ops->display_on(ch->tx_dev);
514 if (ret < 0)
515 return;
516
517 if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED)
518 ch->info->state = FBINFO_STATE_SUSPENDED;
519 }
520
521
522 if (panel->display_on)
523 panel->display_on();
524}
525
526static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch)
527{
528 const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
529
530 if (panel->display_off)
531 panel->display_off();
532
533 if (ch->tx_dev)
534 ch->tx_dev->ops->display_off(ch->tx_dev);
535}
536
537static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
538 struct fb_info *info);
539
540
541
542
543
544struct sh_mobile_lcdc_format_info {
545 u32 fourcc;
546 unsigned int bpp;
547 bool yuv;
548 u32 lddfr;
549};
550
551static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = {
552 {
553 .fourcc = V4L2_PIX_FMT_RGB565,
554 .bpp = 16,
555 .yuv = false,
556 .lddfr = LDDFR_PKF_RGB16,
557 }, {
558 .fourcc = V4L2_PIX_FMT_BGR24,
559 .bpp = 24,
560 .yuv = false,
561 .lddfr = LDDFR_PKF_RGB24,
562 }, {
563 .fourcc = V4L2_PIX_FMT_BGR32,
564 .bpp = 32,
565 .yuv = false,
566 .lddfr = LDDFR_PKF_ARGB32,
567 }, {
568 .fourcc = V4L2_PIX_FMT_NV12,
569 .bpp = 12,
570 .yuv = true,
571 .lddfr = LDDFR_CC | LDDFR_YF_420,
572 }, {
573 .fourcc = V4L2_PIX_FMT_NV21,
574 .bpp = 12,
575 .yuv = true,
576 .lddfr = LDDFR_CC | LDDFR_YF_420,
577 }, {
578 .fourcc = V4L2_PIX_FMT_NV16,
579 .bpp = 16,
580 .yuv = true,
581 .lddfr = LDDFR_CC | LDDFR_YF_422,
582 }, {
583 .fourcc = V4L2_PIX_FMT_NV61,
584 .bpp = 16,
585 .yuv = true,
586 .lddfr = LDDFR_CC | LDDFR_YF_422,
587 }, {
588 .fourcc = V4L2_PIX_FMT_NV24,
589 .bpp = 24,
590 .yuv = true,
591 .lddfr = LDDFR_CC | LDDFR_YF_444,
592 }, {
593 .fourcc = V4L2_PIX_FMT_NV42,
594 .bpp = 24,
595 .yuv = true,
596 .lddfr = LDDFR_CC | LDDFR_YF_444,
597 },
598};
599
600static const struct sh_mobile_lcdc_format_info *
601sh_mobile_format_info(u32 fourcc)
602{
603 unsigned int i;
604
605 for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) {
606 if (sh_mobile_format_infos[i].fourcc == fourcc)
607 return &sh_mobile_format_infos[i];
608 }
609
610 return NULL;
611}
612
613static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var)
614{
615 if (var->grayscale > 1)
616 return var->grayscale;
617
618 switch (var->bits_per_pixel) {
619 case 16:
620 return V4L2_PIX_FMT_RGB565;
621 case 24:
622 return V4L2_PIX_FMT_BGR24;
623 case 32:
624 return V4L2_PIX_FMT_BGR32;
625 default:
626 return 0;
627 }
628}
629
630static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var)
631{
632 return var->grayscale > 1;
633}
634
635
636
637
638
639static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data)
640{
641 struct sh_mobile_lcdc_priv *priv = data;
642 struct sh_mobile_lcdc_chan *ch;
643 unsigned long ldintr;
644 int is_sub;
645 int k;
646
647
648 ldintr = lcdc_read(priv, _LDINTR);
649 lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE);
650
651
652 is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0;
653
654
655 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
656 ch = &priv->ch[k];
657
658 if (!ch->enabled)
659 continue;
660
661
662 if (ldintr & LDINTR_FS) {
663 if (is_sub == lcdc_chan_is_sublcd(ch)) {
664 ch->frame_end = 1;
665 wake_up(&ch->frame_end_wait);
666
667 sh_mobile_lcdc_clk_off(priv);
668 }
669 }
670
671
672 if (ldintr & LDINTR_VES)
673 complete(&ch->vsync_completion);
674 }
675
676 return IRQ_HANDLED;
677}
678
679static int sh_mobile_lcdc_wait_for_vsync(struct sh_mobile_lcdc_chan *ch)
680{
681 unsigned long ldintr;
682 int ret;
683
684
685
686
687 ldintr = lcdc_read(ch->lcdc, _LDINTR);
688 ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK;
689 lcdc_write(ch->lcdc, _LDINTR, ldintr);
690
691 ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion,
692 msecs_to_jiffies(100));
693 if (!ret)
694 return -ETIMEDOUT;
695
696 return 0;
697}
698
699static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
700 int start)
701{
702 unsigned long tmp = lcdc_read(priv, _LDCNT2R);
703 int k;
704
705
706 if (start)
707 lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO);
708 else
709 lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO);
710
711
712 for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
713 if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled)
714 while (1) {
715 tmp = lcdc_read_chan(&priv->ch[k], LDPMR)
716 & LDPMR_LPS;
717 if (start && tmp == LDPMR_LPS)
718 break;
719 if (!start && tmp == 0)
720 break;
721 cpu_relax();
722 }
723
724 if (!start)
725 lcdc_write(priv, _LDDCKSTPR, 1);
726}
727
728static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
729{
730 const struct fb_var_screeninfo *var = &ch->info->var;
731 const struct fb_videomode *mode = &ch->display.mode;
732 unsigned long h_total, hsync_pos, display_h_total;
733 u32 tmp;
734
735 tmp = ch->ldmt1r_value;
736 tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL;
737 tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL;
738 tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0;
739 tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0;
740 tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0;
741 tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0;
742 tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0;
743 lcdc_write_chan(ch, LDMT1R, tmp);
744
745
746 lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r);
747 lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r);
748
749
750 h_total = mode->xres + mode->hsync_len + mode->left_margin
751 + mode->right_margin;
752 tmp = h_total / 8;
753 tmp |= (min(mode->xres, ch->xres) / 8) << 16;
754 lcdc_write_chan(ch, LDHCNR, tmp);
755
756 hsync_pos = mode->xres + mode->right_margin;
757 tmp = hsync_pos / 8;
758 tmp |= (mode->hsync_len / 8) << 16;
759 lcdc_write_chan(ch, LDHSYNR, tmp);
760
761
762 tmp = mode->yres + mode->vsync_len + mode->upper_margin
763 + mode->lower_margin;
764 tmp |= min(mode->yres, ch->yres) << 16;
765 lcdc_write_chan(ch, LDVLNR, tmp);
766
767 tmp = mode->yres + mode->lower_margin;
768 tmp |= mode->vsync_len << 16;
769 lcdc_write_chan(ch, LDVSYNR, tmp);
770
771
772 display_h_total = mode->xres + mode->hsync_len + mode->left_margin
773 + mode->right_margin;
774 tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16)
775 | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7);
776 lcdc_write_chan(ch, LDHAJR, tmp);
777 lcdc_write_chan_mirror(ch, LDHAJR, tmp);
778}
779
780static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl)
781{
782 u32 format = 0;
783
784 if (!ovl->enabled) {
785 lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
786 lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), 0);
787 lcdc_write(ovl->channel->lcdc, LDBCR,
788 LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
789 return;
790 }
791
792 ovl->base_addr_y = ovl->dma_handle;
793 ovl->base_addr_c = ovl->dma_handle
794 + ovl->xres_virtual * ovl->yres_virtual;
795
796 switch (ovl->mode) {
797 case LCDC_OVERLAY_BLEND:
798 format = LDBBSIFR_EN | (ovl->alpha << LDBBSIFR_LAY_SHIFT);
799 break;
800
801 case LCDC_OVERLAY_ROP3:
802 format = LDBBSIFR_EN | LDBBSIFR_BRSEL
803 | (ovl->rop3 << LDBBSIFR_ROP3_SHIFT);
804 break;
805 }
806
807 switch (ovl->format->fourcc) {
808 case V4L2_PIX_FMT_RGB565:
809 case V4L2_PIX_FMT_NV21:
810 case V4L2_PIX_FMT_NV61:
811 case V4L2_PIX_FMT_NV42:
812 format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW;
813 break;
814 case V4L2_PIX_FMT_BGR24:
815 case V4L2_PIX_FMT_NV12:
816 case V4L2_PIX_FMT_NV16:
817 case V4L2_PIX_FMT_NV24:
818 format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB;
819 break;
820 case V4L2_PIX_FMT_BGR32:
821 default:
822 format |= LDBBSIFR_SWPL;
823 break;
824 }
825
826 switch (ovl->format->fourcc) {
827 case V4L2_PIX_FMT_RGB565:
828 format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16;
829 break;
830 case V4L2_PIX_FMT_BGR24:
831 format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24;
832 break;
833 case V4L2_PIX_FMT_BGR32:
834 format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32;
835 break;
836 case V4L2_PIX_FMT_NV12:
837 case V4L2_PIX_FMT_NV21:
838 format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420;
839 break;
840 case V4L2_PIX_FMT_NV16:
841 case V4L2_PIX_FMT_NV61:
842 format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422;
843 break;
844 case V4L2_PIX_FMT_NV24:
845 case V4L2_PIX_FMT_NV42:
846 format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444;
847 break;
848 }
849
850 lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
851
852 lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), format);
853
854 lcdc_write_overlay(ovl, LDBnBSSZR(ovl->index),
855 (ovl->yres << LDBBSSZR_BVSS_SHIFT) |
856 (ovl->xres << LDBBSSZR_BHSS_SHIFT));
857 lcdc_write_overlay(ovl, LDBnBLOCR(ovl->index),
858 (ovl->pos_y << LDBBLOCR_CVLC_SHIFT) |
859 (ovl->pos_x << LDBBLOCR_CHLC_SHIFT));
860 lcdc_write_overlay(ovl, LDBnBSMWR(ovl->index),
861 ovl->pitch << LDBBSMWR_BSMW_SHIFT);
862
863 lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y);
864 lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c);
865
866 lcdc_write(ovl->channel->lcdc, LDBCR,
867 LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
868}
869
870
871
872
873
874
875
876
877static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
878{
879 struct sh_mobile_lcdc_chan *ch;
880 unsigned long tmp;
881 int k, m;
882
883
884
885
886 lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled);
887
888
889 sh_mobile_lcdc_start_stop(priv, 0);
890 lcdc_write(priv, _LDINTR, 0);
891
892
893 tmp = priv->lddckr;
894 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
895 ch = &priv->ch[k];
896 if (!ch->enabled)
897 continue;
898
899
900 lcdc_write_chan(ch, LDPMR, 0);
901
902 m = ch->cfg->clock_divider;
903 if (!m)
904 continue;
905
906
907
908
909 lcdc_write_chan(ch, LDDCKPAT1R, 0);
910 lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1);
911
912 if (m == 1)
913 m = LDDCKR_MOSEL;
914 tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
915 }
916
917 lcdc_write(priv, _LDDCKR, tmp);
918 lcdc_write(priv, _LDDCKSTPR, 0);
919 lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0);
920
921
922 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
923 ch = &priv->ch[k];
924 if (!ch->enabled)
925 continue;
926
927 sh_mobile_lcdc_geometry(ch);
928
929 tmp = ch->format->lddfr;
930
931 if (ch->format->yuv) {
932 switch (ch->colorspace) {
933 case V4L2_COLORSPACE_REC709:
934 tmp |= LDDFR_CF1;
935 break;
936 case V4L2_COLORSPACE_JPEG:
937 tmp |= LDDFR_CF0;
938 break;
939 }
940 }
941
942 lcdc_write_chan(ch, LDDFR, tmp);
943 lcdc_write_chan(ch, LDMLSR, ch->line_size);
944 lcdc_write_chan(ch, LDSA1R, ch->base_addr_y);
945 if (ch->format->yuv)
946 lcdc_write_chan(ch, LDSA2R, ch->base_addr_c);
947
948
949
950
951
952 if (ch->ldmt1r_value & LDMT1R_IFM &&
953 ch->cfg->sys_bus_cfg.deferred_io_msec) {
954 lcdc_write_chan(ch, LDSM1R, LDSM1R_OS);
955 lcdc_write(priv, _LDINTR, LDINTR_FE);
956 } else {
957 lcdc_write_chan(ch, LDSM1R, 0);
958 }
959 }
960
961
962 switch (priv->ch[0].format->fourcc) {
963 case V4L2_PIX_FMT_RGB565:
964 case V4L2_PIX_FMT_NV21:
965 case V4L2_PIX_FMT_NV61:
966 case V4L2_PIX_FMT_NV42:
967 tmp = LDDDSR_LS | LDDDSR_WS;
968 break;
969 case V4L2_PIX_FMT_BGR24:
970 case V4L2_PIX_FMT_NV12:
971 case V4L2_PIX_FMT_NV16:
972 case V4L2_PIX_FMT_NV24:
973 tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
974 break;
975 case V4L2_PIX_FMT_BGR32:
976 default:
977 tmp = LDDDSR_LS;
978 break;
979 }
980 lcdc_write(priv, _LDDDSR, tmp);
981
982
983 lcdc_write(priv, _LDCNT1R, LDCNT1R_DE);
984 sh_mobile_lcdc_start_stop(priv, 1);
985 priv->started = 1;
986}
987
988static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
989{
990 struct sh_mobile_lcdc_chan *ch;
991 unsigned long tmp;
992 int ret;
993 int k;
994
995
996 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
997 if (priv->ch[k].enabled)
998 sh_mobile_lcdc_clk_on(priv);
999 }
1000
1001
1002 lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR);
1003 lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0);
1004
1005 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1006 const struct sh_mobile_lcdc_panel_cfg *panel;
1007
1008 ch = &priv->ch[k];
1009 if (!ch->enabled)
1010 continue;
1011
1012 panel = &ch->cfg->panel_cfg;
1013 if (panel->setup_sys) {
1014 ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops);
1015 if (ret)
1016 return ret;
1017 }
1018 }
1019
1020
1021 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1022 ch = &priv->ch[k];
1023 if (!ch->enabled)
1024 continue;
1025
1026 ch->base_addr_y = ch->dma_handle;
1027 ch->base_addr_c = ch->dma_handle
1028 + ch->xres_virtual * ch->yres_virtual;
1029 ch->line_size = ch->pitch;
1030 }
1031
1032 for (k = 0; k < ARRAY_SIZE(priv->overlays); ++k) {
1033 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[k];
1034 sh_mobile_lcdc_overlay_setup(ovl);
1035 }
1036
1037
1038 __sh_mobile_lcdc_start(priv);
1039
1040
1041
1042
1043 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1044 ch = &priv->ch[k];
1045 if (!ch->enabled)
1046 continue;
1047
1048 tmp = ch->cfg->sys_bus_cfg.deferred_io_msec;
1049 if (ch->ldmt1r_value & LDMT1R_IFM && tmp) {
1050 ch->defio.deferred_io = sh_mobile_lcdc_deferred_io;
1051 ch->defio.delay = msecs_to_jiffies(tmp);
1052 ch->info->fbdefio = &ch->defio;
1053 fb_deferred_io_init(ch->info);
1054 }
1055
1056 sh_mobile_lcdc_display_on(ch);
1057
1058 if (ch->bl) {
1059 ch->bl->props.power = FB_BLANK_UNBLANK;
1060 backlight_update_status(ch->bl);
1061 }
1062 }
1063
1064 return 0;
1065}
1066
1067static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
1068{
1069 struct sh_mobile_lcdc_chan *ch;
1070 int k;
1071
1072
1073 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1074 ch = &priv->ch[k];
1075 if (!ch->enabled)
1076 continue;
1077
1078
1079
1080
1081
1082 if (ch->info && ch->info->fbdefio) {
1083 ch->frame_end = 0;
1084 schedule_delayed_work(&ch->info->deferred_work, 0);
1085 wait_event(ch->frame_end_wait, ch->frame_end);
1086 fb_deferred_io_cleanup(ch->info);
1087 ch->info->fbdefio = NULL;
1088 sh_mobile_lcdc_clk_on(priv);
1089 }
1090
1091 if (ch->bl) {
1092 ch->bl->props.power = FB_BLANK_POWERDOWN;
1093 backlight_update_status(ch->bl);
1094 }
1095
1096 sh_mobile_lcdc_display_off(ch);
1097 }
1098
1099
1100 if (priv->started) {
1101 sh_mobile_lcdc_start_stop(priv, 0);
1102 priv->started = 0;
1103 }
1104
1105
1106 for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
1107 if (priv->ch[k].enabled)
1108 sh_mobile_lcdc_clk_off(priv);
1109}
1110
1111static int __sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
1112 struct fb_info *info)
1113{
1114 if (var->xres > MAX_XRES || var->yres > MAX_YRES)
1115 return -EINVAL;
1116
1117
1118
1119
1120 if (var->xres_virtual < var->xres)
1121 var->xres_virtual = var->xres;
1122 if (var->yres_virtual < var->yres)
1123 var->yres_virtual = var->yres;
1124
1125 if (sh_mobile_format_is_fourcc(var)) {
1126 const struct sh_mobile_lcdc_format_info *format;
1127
1128 format = sh_mobile_format_info(var->grayscale);
1129 if (format == NULL)
1130 return -EINVAL;
1131 var->bits_per_pixel = format->bpp;
1132
1133
1134
1135
1136 if (!format->yuv)
1137 var->colorspace = V4L2_COLORSPACE_SRGB;
1138 else if (var->colorspace != V4L2_COLORSPACE_REC709)
1139 var->colorspace = V4L2_COLORSPACE_JPEG;
1140 } else {
1141 if (var->bits_per_pixel <= 16) {
1142 var->bits_per_pixel = 16;
1143 var->red.offset = 11;
1144 var->red.length = 5;
1145 var->green.offset = 5;
1146 var->green.length = 6;
1147 var->blue.offset = 0;
1148 var->blue.length = 5;
1149 var->transp.offset = 0;
1150 var->transp.length = 0;
1151 } else if (var->bits_per_pixel <= 24) {
1152 var->bits_per_pixel = 24;
1153 var->red.offset = 16;
1154 var->red.length = 8;
1155 var->green.offset = 8;
1156 var->green.length = 8;
1157 var->blue.offset = 0;
1158 var->blue.length = 8;
1159 var->transp.offset = 0;
1160 var->transp.length = 0;
1161 } else if (var->bits_per_pixel <= 32) {
1162 var->bits_per_pixel = 32;
1163 var->red.offset = 16;
1164 var->red.length = 8;
1165 var->green.offset = 8;
1166 var->green.length = 8;
1167 var->blue.offset = 0;
1168 var->blue.length = 8;
1169 var->transp.offset = 24;
1170 var->transp.length = 8;
1171 } else
1172 return -EINVAL;
1173
1174 var->red.msb_right = 0;
1175 var->green.msb_right = 0;
1176 var->blue.msb_right = 0;
1177 var->transp.msb_right = 0;
1178 }
1179
1180
1181 if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 >
1182 info->fix.smem_len)
1183 return -EINVAL;
1184
1185 return 0;
1186}
1187
1188
1189
1190
1191
1192static ssize_t
1193overlay_alpha_show(struct device *dev, struct device_attribute *attr, char *buf)
1194{
1195 struct fb_info *info = dev_get_drvdata(dev);
1196 struct sh_mobile_lcdc_overlay *ovl = info->par;
1197
1198 return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->alpha);
1199}
1200
1201static ssize_t
1202overlay_alpha_store(struct device *dev, struct device_attribute *attr,
1203 const char *buf, size_t count)
1204{
1205 struct fb_info *info = dev_get_drvdata(dev);
1206 struct sh_mobile_lcdc_overlay *ovl = info->par;
1207 unsigned int alpha;
1208 char *endp;
1209
1210 alpha = simple_strtoul(buf, &endp, 10);
1211 if (isspace(*endp))
1212 endp++;
1213
1214 if (endp - buf != count)
1215 return -EINVAL;
1216
1217 if (alpha > 255)
1218 return -EINVAL;
1219
1220 if (ovl->alpha != alpha) {
1221 ovl->alpha = alpha;
1222
1223 if (ovl->mode == LCDC_OVERLAY_BLEND && ovl->enabled)
1224 sh_mobile_lcdc_overlay_setup(ovl);
1225 }
1226
1227 return count;
1228}
1229
1230static ssize_t
1231overlay_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
1232{
1233 struct fb_info *info = dev_get_drvdata(dev);
1234 struct sh_mobile_lcdc_overlay *ovl = info->par;
1235
1236 return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->mode);
1237}
1238
1239static ssize_t
1240overlay_mode_store(struct device *dev, struct device_attribute *attr,
1241 const char *buf, size_t count)
1242{
1243 struct fb_info *info = dev_get_drvdata(dev);
1244 struct sh_mobile_lcdc_overlay *ovl = info->par;
1245 unsigned int mode;
1246 char *endp;
1247
1248 mode = simple_strtoul(buf, &endp, 10);
1249 if (isspace(*endp))
1250 endp++;
1251
1252 if (endp - buf != count)
1253 return -EINVAL;
1254
1255 if (mode != LCDC_OVERLAY_BLEND && mode != LCDC_OVERLAY_ROP3)
1256 return -EINVAL;
1257
1258 if (ovl->mode != mode) {
1259 ovl->mode = mode;
1260
1261 if (ovl->enabled)
1262 sh_mobile_lcdc_overlay_setup(ovl);
1263 }
1264
1265 return count;
1266}
1267
1268static ssize_t
1269overlay_position_show(struct device *dev, struct device_attribute *attr,
1270 char *buf)
1271{
1272 struct fb_info *info = dev_get_drvdata(dev);
1273 struct sh_mobile_lcdc_overlay *ovl = info->par;
1274
1275 return scnprintf(buf, PAGE_SIZE, "%d,%d\n", ovl->pos_x, ovl->pos_y);
1276}
1277
1278static ssize_t
1279overlay_position_store(struct device *dev, struct device_attribute *attr,
1280 const char *buf, size_t count)
1281{
1282 struct fb_info *info = dev_get_drvdata(dev);
1283 struct sh_mobile_lcdc_overlay *ovl = info->par;
1284 char *endp;
1285 int pos_x;
1286 int pos_y;
1287
1288 pos_x = simple_strtol(buf, &endp, 10);
1289 if (*endp != ',')
1290 return -EINVAL;
1291
1292 pos_y = simple_strtol(endp + 1, &endp, 10);
1293 if (isspace(*endp))
1294 endp++;
1295
1296 if (endp - buf != count)
1297 return -EINVAL;
1298
1299 if (ovl->pos_x != pos_x || ovl->pos_y != pos_y) {
1300 ovl->pos_x = pos_x;
1301 ovl->pos_y = pos_y;
1302
1303 if (ovl->enabled)
1304 sh_mobile_lcdc_overlay_setup(ovl);
1305 }
1306
1307 return count;
1308}
1309
1310static ssize_t
1311overlay_rop3_show(struct device *dev, struct device_attribute *attr, char *buf)
1312{
1313 struct fb_info *info = dev_get_drvdata(dev);
1314 struct sh_mobile_lcdc_overlay *ovl = info->par;
1315
1316 return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->rop3);
1317}
1318
1319static ssize_t
1320overlay_rop3_store(struct device *dev, struct device_attribute *attr,
1321 const char *buf, size_t count)
1322{
1323 struct fb_info *info = dev_get_drvdata(dev);
1324 struct sh_mobile_lcdc_overlay *ovl = info->par;
1325 unsigned int rop3;
1326 char *endp;
1327
1328 rop3 = simple_strtoul(buf, &endp, 10);
1329 if (isspace(*endp))
1330 endp++;
1331
1332 if (endp - buf != count)
1333 return -EINVAL;
1334
1335 if (rop3 > 255)
1336 return -EINVAL;
1337
1338 if (ovl->rop3 != rop3) {
1339 ovl->rop3 = rop3;
1340
1341 if (ovl->mode == LCDC_OVERLAY_ROP3 && ovl->enabled)
1342 sh_mobile_lcdc_overlay_setup(ovl);
1343 }
1344
1345 return count;
1346}
1347
1348static const struct device_attribute overlay_sysfs_attrs[] = {
1349 __ATTR(ovl_alpha, S_IRUGO|S_IWUSR,
1350 overlay_alpha_show, overlay_alpha_store),
1351 __ATTR(ovl_mode, S_IRUGO|S_IWUSR,
1352 overlay_mode_show, overlay_mode_store),
1353 __ATTR(ovl_position, S_IRUGO|S_IWUSR,
1354 overlay_position_show, overlay_position_store),
1355 __ATTR(ovl_rop3, S_IRUGO|S_IWUSR,
1356 overlay_rop3_show, overlay_rop3_store),
1357};
1358
1359static const struct fb_fix_screeninfo sh_mobile_lcdc_overlay_fix = {
1360 .id = "SH Mobile LCDC",
1361 .type = FB_TYPE_PACKED_PIXELS,
1362 .visual = FB_VISUAL_TRUECOLOR,
1363 .accel = FB_ACCEL_NONE,
1364 .xpanstep = 1,
1365 .ypanstep = 1,
1366 .ywrapstep = 0,
1367 .capabilities = FB_CAP_FOURCC,
1368};
1369
1370static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
1371 struct fb_info *info)
1372{
1373 struct sh_mobile_lcdc_overlay *ovl = info->par;
1374 unsigned long base_addr_y;
1375 unsigned long base_addr_c;
1376 unsigned long y_offset;
1377 unsigned long c_offset;
1378
1379 if (!ovl->format->yuv) {
1380 y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset)
1381 * ovl->format->bpp / 8;
1382 c_offset = 0;
1383 } else {
1384 unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1;
1385 unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1;
1386
1387 y_offset = var->yoffset * ovl->xres_virtual + var->xoffset;
1388 c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub
1389 + var->xoffset * 2 / xsub;
1390 }
1391
1392
1393
1394
1395 if (y_offset == ovl->pan_y_offset)
1396 return 0;
1397
1398
1399 base_addr_y = ovl->dma_handle + y_offset;
1400 base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual
1401 + c_offset;
1402
1403 ovl->base_addr_y = base_addr_y;
1404 ovl->base_addr_c = base_addr_c;
1405 ovl->pan_y_offset = y_offset;
1406
1407 lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
1408
1409 lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y);
1410 lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c);
1411
1412 lcdc_write(ovl->channel->lcdc, LDBCR,
1413 LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
1414
1415 return 0;
1416}
1417
1418static int sh_mobile_lcdc_overlay_ioctl(struct fb_info *info, unsigned int cmd,
1419 unsigned long arg)
1420{
1421 struct sh_mobile_lcdc_overlay *ovl = info->par;
1422
1423 switch (cmd) {
1424 case FBIO_WAITFORVSYNC:
1425 return sh_mobile_lcdc_wait_for_vsync(ovl->channel);
1426
1427 default:
1428 return -ENOIOCTLCMD;
1429 }
1430}
1431
1432static int sh_mobile_lcdc_overlay_check_var(struct fb_var_screeninfo *var,
1433 struct fb_info *info)
1434{
1435 return __sh_mobile_lcdc_check_var(var, info);
1436}
1437
1438static int sh_mobile_lcdc_overlay_set_par(struct fb_info *info)
1439{
1440 struct sh_mobile_lcdc_overlay *ovl = info->par;
1441
1442 ovl->format =
1443 sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
1444
1445 ovl->xres = info->var.xres;
1446 ovl->xres_virtual = info->var.xres_virtual;
1447 ovl->yres = info->var.yres;
1448 ovl->yres_virtual = info->var.yres_virtual;
1449
1450 if (ovl->format->yuv)
1451 ovl->pitch = info->var.xres_virtual;
1452 else
1453 ovl->pitch = info->var.xres_virtual * ovl->format->bpp / 8;
1454
1455 sh_mobile_lcdc_overlay_setup(ovl);
1456
1457 info->fix.line_length = ovl->pitch;
1458
1459 if (sh_mobile_format_is_fourcc(&info->var)) {
1460 info->fix.type = FB_TYPE_FOURCC;
1461 info->fix.visual = FB_VISUAL_FOURCC;
1462 } else {
1463 info->fix.type = FB_TYPE_PACKED_PIXELS;
1464 info->fix.visual = FB_VISUAL_TRUECOLOR;
1465 }
1466
1467 return 0;
1468}
1469
1470
1471static int sh_mobile_lcdc_overlay_blank(int blank, struct fb_info *info)
1472{
1473 struct sh_mobile_lcdc_overlay *ovl = info->par;
1474
1475 ovl->enabled = !blank;
1476 sh_mobile_lcdc_overlay_setup(ovl);
1477
1478
1479
1480
1481 return 1;
1482}
1483
1484static int
1485sh_mobile_lcdc_overlay_mmap(struct fb_info *info, struct vm_area_struct *vma)
1486{
1487 struct sh_mobile_lcdc_overlay *ovl = info->par;
1488
1489 return dma_mmap_coherent(ovl->channel->lcdc->dev, vma, ovl->fb_mem,
1490 ovl->dma_handle, ovl->fb_size);
1491}
1492
1493static struct fb_ops sh_mobile_lcdc_overlay_ops = {
1494 .owner = THIS_MODULE,
1495 .fb_read = fb_sys_read,
1496 .fb_write = fb_sys_write,
1497 .fb_fillrect = sys_fillrect,
1498 .fb_copyarea = sys_copyarea,
1499 .fb_imageblit = sys_imageblit,
1500 .fb_blank = sh_mobile_lcdc_overlay_blank,
1501 .fb_pan_display = sh_mobile_lcdc_overlay_pan,
1502 .fb_ioctl = sh_mobile_lcdc_overlay_ioctl,
1503 .fb_check_var = sh_mobile_lcdc_overlay_check_var,
1504 .fb_set_par = sh_mobile_lcdc_overlay_set_par,
1505 .fb_mmap = sh_mobile_lcdc_overlay_mmap,
1506};
1507
1508static void
1509sh_mobile_lcdc_overlay_fb_unregister(struct sh_mobile_lcdc_overlay *ovl)
1510{
1511 struct fb_info *info = ovl->info;
1512
1513 if (info == NULL || info->dev == NULL)
1514 return;
1515
1516 unregister_framebuffer(ovl->info);
1517}
1518
1519static int
1520sh_mobile_lcdc_overlay_fb_register(struct sh_mobile_lcdc_overlay *ovl)
1521{
1522 struct sh_mobile_lcdc_priv *lcdc = ovl->channel->lcdc;
1523 struct fb_info *info = ovl->info;
1524 unsigned int i;
1525 int ret;
1526
1527 if (info == NULL)
1528 return 0;
1529
1530 ret = register_framebuffer(info);
1531 if (ret < 0)
1532 return ret;
1533
1534 dev_info(lcdc->dev, "registered %s/overlay %u as %dx%d %dbpp.\n",
1535 dev_name(lcdc->dev), ovl->index, info->var.xres,
1536 info->var.yres, info->var.bits_per_pixel);
1537
1538 for (i = 0; i < ARRAY_SIZE(overlay_sysfs_attrs); ++i) {
1539 ret = device_create_file(info->dev, &overlay_sysfs_attrs[i]);
1540 if (ret < 0)
1541 return ret;
1542 }
1543
1544 return 0;
1545}
1546
1547static void
1548sh_mobile_lcdc_overlay_fb_cleanup(struct sh_mobile_lcdc_overlay *ovl)
1549{
1550 struct fb_info *info = ovl->info;
1551
1552 if (info == NULL || info->device == NULL)
1553 return;
1554
1555 framebuffer_release(info);
1556}
1557
1558static int
1559sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
1560{
1561 struct sh_mobile_lcdc_priv *priv = ovl->channel->lcdc;
1562 struct fb_var_screeninfo *var;
1563 struct fb_info *info;
1564
1565
1566 info = framebuffer_alloc(0, priv->dev);
1567 if (!info)
1568 return -ENOMEM;
1569
1570 ovl->info = info;
1571
1572 info->flags = FBINFO_FLAG_DEFAULT;
1573 info->fbops = &sh_mobile_lcdc_overlay_ops;
1574 info->device = priv->dev;
1575 info->screen_base = ovl->fb_mem;
1576 info->par = ovl;
1577
1578
1579
1580
1581 info->fix = sh_mobile_lcdc_overlay_fix;
1582 snprintf(info->fix.id, sizeof(info->fix.id),
1583 "SH Mobile LCDC Overlay %u", ovl->index);
1584 info->fix.smem_start = ovl->dma_handle;
1585 info->fix.smem_len = ovl->fb_size;
1586 info->fix.line_length = ovl->pitch;
1587
1588 if (ovl->format->yuv)
1589 info->fix.visual = FB_VISUAL_FOURCC;
1590 else
1591 info->fix.visual = FB_VISUAL_TRUECOLOR;
1592
1593 switch (ovl->format->fourcc) {
1594 case V4L2_PIX_FMT_NV12:
1595 case V4L2_PIX_FMT_NV21:
1596 info->fix.ypanstep = 2;
1597 case V4L2_PIX_FMT_NV16:
1598 case V4L2_PIX_FMT_NV61:
1599 info->fix.xpanstep = 2;
1600 }
1601
1602
1603 var = &info->var;
1604 memset(var, 0, sizeof(*var));
1605 var->xres = ovl->xres;
1606 var->yres = ovl->yres;
1607 var->xres_virtual = ovl->xres_virtual;
1608 var->yres_virtual = ovl->yres_virtual;
1609 var->activate = FB_ACTIVATE_NOW;
1610
1611
1612
1613
1614 if (!ovl->format->yuv)
1615 var->bits_per_pixel = ovl->format->bpp;
1616 else
1617 var->grayscale = ovl->format->fourcc;
1618
1619 return sh_mobile_lcdc_overlay_check_var(var, info);
1620}
1621
1622
1623
1624
1625
1626static int sh_mobile_lcdc_setcolreg(u_int regno,
1627 u_int red, u_int green, u_int blue,
1628 u_int transp, struct fb_info *info)
1629{
1630 u32 *palette = info->pseudo_palette;
1631
1632 if (regno >= PALETTE_NR)
1633 return -EINVAL;
1634
1635
1636
1637 red >>= 16 - info->var.red.length;
1638 green >>= 16 - info->var.green.length;
1639 blue >>= 16 - info->var.blue.length;
1640 transp >>= 16 - info->var.transp.length;
1641
1642 palette[regno] = (red << info->var.red.offset) |
1643 (green << info->var.green.offset) |
1644 (blue << info->var.blue.offset) |
1645 (transp << info->var.transp.offset);
1646
1647 return 0;
1648}
1649
1650static const struct fb_fix_screeninfo sh_mobile_lcdc_fix = {
1651 .id = "SH Mobile LCDC",
1652 .type = FB_TYPE_PACKED_PIXELS,
1653 .visual = FB_VISUAL_TRUECOLOR,
1654 .accel = FB_ACCEL_NONE,
1655 .xpanstep = 1,
1656 .ypanstep = 1,
1657 .ywrapstep = 0,
1658 .capabilities = FB_CAP_FOURCC,
1659};
1660
1661static void sh_mobile_lcdc_fillrect(struct fb_info *info,
1662 const struct fb_fillrect *rect)
1663{
1664 sys_fillrect(info, rect);
1665 sh_mobile_lcdc_deferred_io_touch(info);
1666}
1667
1668static void sh_mobile_lcdc_copyarea(struct fb_info *info,
1669 const struct fb_copyarea *area)
1670{
1671 sys_copyarea(info, area);
1672 sh_mobile_lcdc_deferred_io_touch(info);
1673}
1674
1675static void sh_mobile_lcdc_imageblit(struct fb_info *info,
1676 const struct fb_image *image)
1677{
1678 sys_imageblit(info, image);
1679 sh_mobile_lcdc_deferred_io_touch(info);
1680}
1681
1682static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
1683 struct fb_info *info)
1684{
1685 struct sh_mobile_lcdc_chan *ch = info->par;
1686 struct sh_mobile_lcdc_priv *priv = ch->lcdc;
1687 unsigned long ldrcntr;
1688 unsigned long base_addr_y, base_addr_c;
1689 unsigned long y_offset;
1690 unsigned long c_offset;
1691
1692 if (!ch->format->yuv) {
1693 y_offset = (var->yoffset * ch->xres_virtual + var->xoffset)
1694 * ch->format->bpp / 8;
1695 c_offset = 0;
1696 } else {
1697 unsigned int xsub = ch->format->bpp < 24 ? 2 : 1;
1698 unsigned int ysub = ch->format->bpp < 16 ? 2 : 1;
1699
1700 y_offset = var->yoffset * ch->xres_virtual + var->xoffset;
1701 c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub
1702 + var->xoffset * 2 / xsub;
1703 }
1704
1705
1706
1707
1708 if (y_offset == ch->pan_y_offset)
1709 return 0;
1710
1711
1712 base_addr_y = ch->dma_handle + y_offset;
1713 base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual
1714 + c_offset;
1715
1716 ch->base_addr_y = base_addr_y;
1717 ch->base_addr_c = base_addr_c;
1718 ch->pan_y_offset = y_offset;
1719
1720 lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
1721 if (ch->format->yuv)
1722 lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
1723
1724 ldrcntr = lcdc_read(priv, _LDRCNTR);
1725 if (lcdc_chan_is_sublcd(ch))
1726 lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
1727 else
1728 lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS);
1729
1730
1731 sh_mobile_lcdc_deferred_io_touch(info);
1732
1733 return 0;
1734}
1735
1736static int sh_mobile_lcdc_ioctl(struct fb_info *info, unsigned int cmd,
1737 unsigned long arg)
1738{
1739 struct sh_mobile_lcdc_chan *ch = info->par;
1740 int retval;
1741
1742 switch (cmd) {
1743 case FBIO_WAITFORVSYNC:
1744 retval = sh_mobile_lcdc_wait_for_vsync(ch);
1745 break;
1746
1747 default:
1748 retval = -ENOIOCTLCMD;
1749 break;
1750 }
1751 return retval;
1752}
1753
1754static void sh_mobile_fb_reconfig(struct fb_info *info)
1755{
1756 struct sh_mobile_lcdc_chan *ch = info->par;
1757 struct fb_var_screeninfo var;
1758 struct fb_videomode mode;
1759
1760 if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par))
1761
1762 return;
1763
1764 fb_var_to_videomode(&mode, &info->var);
1765
1766 if (fb_mode_is_equal(&ch->display.mode, &mode))
1767 return;
1768
1769
1770 var = info->var;
1771 fb_videomode_to_var(&var, &ch->display.mode);
1772 var.width = ch->display.width;
1773 var.height = ch->display.height;
1774 var.activate = FB_ACTIVATE_NOW;
1775
1776 if (fb_set_var(info, &var) < 0)
1777
1778 return;
1779
1780 fbcon_update_vcs(info, true);
1781}
1782
1783
1784
1785
1786
1787static int sh_mobile_lcdc_release(struct fb_info *info, int user)
1788{
1789 struct sh_mobile_lcdc_chan *ch = info->par;
1790
1791 mutex_lock(&ch->open_lock);
1792 dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
1793
1794 ch->use_count--;
1795
1796
1797 if (user) {
1798 console_lock();
1799 sh_mobile_fb_reconfig(info);
1800 console_unlock();
1801 }
1802
1803 mutex_unlock(&ch->open_lock);
1804
1805 return 0;
1806}
1807
1808static int sh_mobile_lcdc_open(struct fb_info *info, int user)
1809{
1810 struct sh_mobile_lcdc_chan *ch = info->par;
1811
1812 mutex_lock(&ch->open_lock);
1813 ch->use_count++;
1814
1815 dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
1816 mutex_unlock(&ch->open_lock);
1817
1818 return 0;
1819}
1820
1821static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
1822 struct fb_info *info)
1823{
1824 struct sh_mobile_lcdc_chan *ch = info->par;
1825 struct sh_mobile_lcdc_priv *p = ch->lcdc;
1826 unsigned int best_dist = (unsigned int)-1;
1827 unsigned int best_xres = 0;
1828 unsigned int best_yres = 0;
1829 unsigned int i;
1830 int ret;
1831
1832
1833
1834
1835
1836
1837 for (i = 0; i < ch->cfg->num_modes; ++i) {
1838 const struct fb_videomode *mode = &ch->cfg->lcd_modes[i];
1839 unsigned int dist;
1840
1841
1842 if (var->xres > mode->xres || var->yres > mode->yres)
1843 continue;
1844
1845 dist = var->xres * var->yres + mode->xres * mode->yres
1846 - 2 * min(var->xres, mode->xres)
1847 * min(var->yres, mode->yres);
1848
1849 if (dist < best_dist) {
1850 best_xres = mode->xres;
1851 best_yres = mode->yres;
1852 best_dist = dist;
1853 }
1854 }
1855
1856
1857 if (ch->cfg->num_modes != 0) {
1858 if (best_dist == (unsigned int)-1)
1859 return -EINVAL;
1860
1861 var->xres = best_xres;
1862 var->yres = best_yres;
1863 }
1864
1865 ret = __sh_mobile_lcdc_check_var(var, info);
1866 if (ret < 0)
1867 return ret;
1868
1869
1870 if (p->forced_fourcc &&
1871 p->forced_fourcc != sh_mobile_format_fourcc(var))
1872 return -EINVAL;
1873
1874 return 0;
1875}
1876
1877static int sh_mobile_lcdc_set_par(struct fb_info *info)
1878{
1879 struct sh_mobile_lcdc_chan *ch = info->par;
1880 int ret;
1881
1882 sh_mobile_lcdc_stop(ch->lcdc);
1883
1884 ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
1885 ch->colorspace = info->var.colorspace;
1886
1887 ch->xres = info->var.xres;
1888 ch->xres_virtual = info->var.xres_virtual;
1889 ch->yres = info->var.yres;
1890 ch->yres_virtual = info->var.yres_virtual;
1891
1892 if (ch->format->yuv)
1893 ch->pitch = info->var.xres_virtual;
1894 else
1895 ch->pitch = info->var.xres_virtual * ch->format->bpp / 8;
1896
1897 ret = sh_mobile_lcdc_start(ch->lcdc);
1898 if (ret < 0)
1899 dev_err(info->dev, "%s: unable to restart LCDC\n", __func__);
1900
1901 info->fix.line_length = ch->pitch;
1902
1903 if (sh_mobile_format_is_fourcc(&info->var)) {
1904 info->fix.type = FB_TYPE_FOURCC;
1905 info->fix.visual = FB_VISUAL_FOURCC;
1906 } else {
1907 info->fix.type = FB_TYPE_PACKED_PIXELS;
1908 info->fix.visual = FB_VISUAL_TRUECOLOR;
1909 }
1910
1911 return ret;
1912}
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922static int sh_mobile_lcdc_blank(int blank, struct fb_info *info)
1923{
1924 struct sh_mobile_lcdc_chan *ch = info->par;
1925 struct sh_mobile_lcdc_priv *p = ch->lcdc;
1926
1927
1928 if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) {
1929 struct fb_fillrect rect = {
1930 .width = ch->xres,
1931 .height = ch->yres,
1932 };
1933 sh_mobile_lcdc_fillrect(info, &rect);
1934 }
1935
1936 if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) {
1937 sh_mobile_lcdc_clk_on(p);
1938 }
1939
1940 if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) {
1941
1942
1943
1944
1945
1946 if (!info->fbdefio) {
1947 sh_mobile_lcdc_wait_for_vsync(ch);
1948 sh_mobile_lcdc_wait_for_vsync(ch);
1949 }
1950 sh_mobile_lcdc_clk_off(p);
1951 }
1952
1953 ch->blank_status = blank;
1954 return 0;
1955}
1956
1957static int
1958sh_mobile_lcdc_mmap(struct fb_info *info, struct vm_area_struct *vma)
1959{
1960 struct sh_mobile_lcdc_chan *ch = info->par;
1961
1962 return dma_mmap_coherent(ch->lcdc->dev, vma, ch->fb_mem,
1963 ch->dma_handle, ch->fb_size);
1964}
1965
1966static struct fb_ops sh_mobile_lcdc_ops = {
1967 .owner = THIS_MODULE,
1968 .fb_setcolreg = sh_mobile_lcdc_setcolreg,
1969 .fb_read = fb_sys_read,
1970 .fb_write = fb_sys_write,
1971 .fb_fillrect = sh_mobile_lcdc_fillrect,
1972 .fb_copyarea = sh_mobile_lcdc_copyarea,
1973 .fb_imageblit = sh_mobile_lcdc_imageblit,
1974 .fb_blank = sh_mobile_lcdc_blank,
1975 .fb_pan_display = sh_mobile_lcdc_pan,
1976 .fb_ioctl = sh_mobile_lcdc_ioctl,
1977 .fb_open = sh_mobile_lcdc_open,
1978 .fb_release = sh_mobile_lcdc_release,
1979 .fb_check_var = sh_mobile_lcdc_check_var,
1980 .fb_set_par = sh_mobile_lcdc_set_par,
1981 .fb_mmap = sh_mobile_lcdc_mmap,
1982};
1983
1984static void
1985sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch)
1986{
1987 if (ch->info && ch->info->dev)
1988 unregister_framebuffer(ch->info);
1989}
1990
1991static int
1992sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch)
1993{
1994 struct fb_info *info = ch->info;
1995 int ret;
1996
1997 if (info->fbdefio) {
1998 ch->sglist = vmalloc(sizeof(struct scatterlist) *
1999 ch->fb_size >> PAGE_SHIFT);
2000 if (!ch->sglist)
2001 return -ENOMEM;
2002 }
2003
2004 info->bl_dev = ch->bl;
2005
2006 ret = register_framebuffer(info);
2007 if (ret < 0)
2008 return ret;
2009
2010 dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n",
2011 dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ?
2012 "mainlcd" : "sublcd", info->var.xres, info->var.yres,
2013 info->var.bits_per_pixel);
2014
2015
2016 if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
2017 sh_mobile_lcdc_clk_off(ch->lcdc);
2018
2019 return ret;
2020}
2021
2022static void
2023sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch)
2024{
2025 struct fb_info *info = ch->info;
2026
2027 if (!info || !info->device)
2028 return;
2029
2030 vfree(ch->sglist);
2031
2032 fb_dealloc_cmap(&info->cmap);
2033 framebuffer_release(info);
2034}
2035
2036static int
2037sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
2038 const struct fb_videomode *modes,
2039 unsigned int num_modes)
2040{
2041 struct sh_mobile_lcdc_priv *priv = ch->lcdc;
2042 struct fb_var_screeninfo *var;
2043 struct fb_info *info;
2044 int ret;
2045
2046
2047
2048
2049 info = framebuffer_alloc(0, priv->dev);
2050 if (!info)
2051 return -ENOMEM;
2052
2053 ch->info = info;
2054
2055 info->flags = FBINFO_FLAG_DEFAULT;
2056 info->fbops = &sh_mobile_lcdc_ops;
2057 info->device = priv->dev;
2058 info->screen_base = ch->fb_mem;
2059 info->pseudo_palette = &ch->pseudo_palette;
2060 info->par = ch;
2061
2062 fb_videomode_to_modelist(modes, num_modes, &info->modelist);
2063
2064 ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
2065 if (ret < 0) {
2066 dev_err(priv->dev, "unable to allocate cmap\n");
2067 return ret;
2068 }
2069
2070
2071
2072
2073 info->fix = sh_mobile_lcdc_fix;
2074 info->fix.smem_start = ch->dma_handle;
2075 info->fix.smem_len = ch->fb_size;
2076 info->fix.line_length = ch->pitch;
2077
2078 if (ch->format->yuv)
2079 info->fix.visual = FB_VISUAL_FOURCC;
2080 else
2081 info->fix.visual = FB_VISUAL_TRUECOLOR;
2082
2083 switch (ch->format->fourcc) {
2084 case V4L2_PIX_FMT_NV12:
2085 case V4L2_PIX_FMT_NV21:
2086 info->fix.ypanstep = 2;
2087 case V4L2_PIX_FMT_NV16:
2088 case V4L2_PIX_FMT_NV61:
2089 info->fix.xpanstep = 2;
2090 }
2091
2092
2093
2094
2095 var = &info->var;
2096 fb_videomode_to_var(var, modes);
2097 var->width = ch->display.width;
2098 var->height = ch->display.height;
2099 var->xres_virtual = ch->xres_virtual;
2100 var->yres_virtual = ch->yres_virtual;
2101 var->activate = FB_ACTIVATE_NOW;
2102
2103
2104
2105
2106 if (!ch->format->yuv)
2107 var->bits_per_pixel = ch->format->bpp;
2108 else
2109 var->grayscale = ch->format->fourcc;
2110
2111 ret = sh_mobile_lcdc_check_var(var, info);
2112 if (ret)
2113 return ret;
2114
2115 return 0;
2116}
2117
2118
2119
2120
2121
2122static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)
2123{
2124 struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
2125 int brightness = bdev->props.brightness;
2126
2127 if (bdev->props.power != FB_BLANK_UNBLANK ||
2128 bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
2129 brightness = 0;
2130
2131 ch->bl_brightness = brightness;
2132 return ch->cfg->bl_info.set_brightness(brightness);
2133}
2134
2135static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
2136{
2137 struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
2138
2139 return ch->bl_brightness;
2140}
2141
2142static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,
2143 struct fb_info *info)
2144{
2145 return (info->bl_dev == bdev);
2146}
2147
2148static const struct backlight_ops sh_mobile_lcdc_bl_ops = {
2149 .options = BL_CORE_SUSPENDRESUME,
2150 .update_status = sh_mobile_lcdc_update_bl,
2151 .get_brightness = sh_mobile_lcdc_get_brightness,
2152 .check_fb = sh_mobile_lcdc_check_fb,
2153};
2154
2155static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent,
2156 struct sh_mobile_lcdc_chan *ch)
2157{
2158 struct backlight_device *bl;
2159
2160 bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch,
2161 &sh_mobile_lcdc_bl_ops, NULL);
2162 if (IS_ERR(bl)) {
2163 dev_err(parent, "unable to register backlight device: %ld\n",
2164 PTR_ERR(bl));
2165 return NULL;
2166 }
2167
2168 bl->props.max_brightness = ch->cfg->bl_info.max_brightness;
2169 bl->props.brightness = bl->props.max_brightness;
2170 backlight_update_status(bl);
2171
2172 return bl;
2173}
2174
2175static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev)
2176{
2177 backlight_device_unregister(bdev);
2178}
2179
2180
2181
2182
2183
2184static int sh_mobile_lcdc_suspend(struct device *dev)
2185{
2186 struct platform_device *pdev = to_platform_device(dev);
2187
2188 sh_mobile_lcdc_stop(platform_get_drvdata(pdev));
2189 return 0;
2190}
2191
2192static int sh_mobile_lcdc_resume(struct device *dev)
2193{
2194 struct platform_device *pdev = to_platform_device(dev);
2195
2196 return sh_mobile_lcdc_start(platform_get_drvdata(pdev));
2197}
2198
2199static int sh_mobile_lcdc_runtime_suspend(struct device *dev)
2200{
2201 struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev);
2202
2203
2204 lcdc_write(priv, _LDCNT1R, 0);
2205
2206 return 0;
2207}
2208
2209static int sh_mobile_lcdc_runtime_resume(struct device *dev)
2210{
2211 struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev);
2212
2213 __sh_mobile_lcdc_start(priv);
2214
2215 return 0;
2216}
2217
2218static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = {
2219 .suspend = sh_mobile_lcdc_suspend,
2220 .resume = sh_mobile_lcdc_resume,
2221 .runtime_suspend = sh_mobile_lcdc_runtime_suspend,
2222 .runtime_resume = sh_mobile_lcdc_runtime_resume,
2223};
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233static const struct fb_videomode default_720p = {
2234 .name = "HDMI 720p",
2235 .xres = 1280,
2236 .yres = 720,
2237
2238 .left_margin = 220,
2239 .right_margin = 110,
2240 .hsync_len = 40,
2241
2242 .upper_margin = 20,
2243 .lower_margin = 5,
2244 .vsync_len = 5,
2245
2246 .pixclock = 13468,
2247 .refresh = 60,
2248 .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
2249};
2250
2251static int sh_mobile_lcdc_remove(struct platform_device *pdev)
2252{
2253 struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
2254 unsigned int i;
2255
2256 for (i = 0; i < ARRAY_SIZE(priv->overlays); i++)
2257 sh_mobile_lcdc_overlay_fb_unregister(&priv->overlays[i]);
2258 for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
2259 sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]);
2260
2261 sh_mobile_lcdc_stop(priv);
2262
2263 for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) {
2264 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
2265
2266 sh_mobile_lcdc_overlay_fb_cleanup(ovl);
2267
2268 if (ovl->fb_mem)
2269 dma_free_coherent(&pdev->dev, ovl->fb_size,
2270 ovl->fb_mem, ovl->dma_handle);
2271 }
2272
2273 for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
2274 struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
2275
2276 if (ch->tx_dev) {
2277 ch->tx_dev->lcdc = NULL;
2278 module_put(ch->cfg->tx_dev->dev.driver->owner);
2279 }
2280
2281 sh_mobile_lcdc_channel_fb_cleanup(ch);
2282
2283 if (ch->fb_mem)
2284 dma_free_coherent(&pdev->dev, ch->fb_size,
2285 ch->fb_mem, ch->dma_handle);
2286 }
2287
2288 for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
2289 struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
2290
2291 if (ch->bl)
2292 sh_mobile_lcdc_bl_remove(ch->bl);
2293 mutex_destroy(&ch->open_lock);
2294 }
2295
2296 if (priv->dot_clk) {
2297 pm_runtime_disable(&pdev->dev);
2298 clk_put(priv->dot_clk);
2299 }
2300
2301 if (priv->base)
2302 iounmap(priv->base);
2303
2304 if (priv->irq)
2305 free_irq(priv->irq, priv);
2306 kfree(priv);
2307 return 0;
2308}
2309
2310static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch)
2311{
2312 int interface_type = ch->cfg->interface_type;
2313
2314 switch (interface_type) {
2315 case RGB8:
2316 case RGB9:
2317 case RGB12A:
2318 case RGB12B:
2319 case RGB16:
2320 case RGB18:
2321 case RGB24:
2322 case SYS8A:
2323 case SYS8B:
2324 case SYS8C:
2325 case SYS8D:
2326 case SYS9:
2327 case SYS12:
2328 case SYS16A:
2329 case SYS16B:
2330 case SYS16C:
2331 case SYS18:
2332 case SYS24:
2333 break;
2334 default:
2335 return -EINVAL;
2336 }
2337
2338
2339 if (lcdc_chan_is_sublcd(ch)) {
2340 if (!(interface_type & LDMT1R_IFM))
2341 return -EINVAL;
2342
2343 interface_type &= ~LDMT1R_IFM;
2344 }
2345
2346 ch->ldmt1r_value = interface_type;
2347 return 0;
2348}
2349
2350static int
2351sh_mobile_lcdc_overlay_init(struct sh_mobile_lcdc_overlay *ovl)
2352{
2353 const struct sh_mobile_lcdc_format_info *format;
2354 struct device *dev = ovl->channel->lcdc->dev;
2355 int ret;
2356
2357 if (ovl->cfg->fourcc == 0)
2358 return 0;
2359
2360
2361 format = sh_mobile_format_info(ovl->cfg->fourcc);
2362 if (format == NULL) {
2363 dev_err(dev, "Invalid FOURCC %08x\n", ovl->cfg->fourcc);
2364 return -EINVAL;
2365 }
2366
2367 ovl->enabled = false;
2368 ovl->mode = LCDC_OVERLAY_BLEND;
2369 ovl->alpha = 255;
2370 ovl->rop3 = 0;
2371 ovl->pos_x = 0;
2372 ovl->pos_y = 0;
2373
2374
2375
2376
2377 ovl->format = format;
2378 ovl->xres = ovl->cfg->max_xres;
2379 ovl->xres_virtual = ovl->xres;
2380 ovl->yres = ovl->cfg->max_yres;
2381 ovl->yres_virtual = ovl->yres * 2;
2382
2383 if (!format->yuv)
2384 ovl->pitch = ovl->xres_virtual * format->bpp / 8;
2385 else
2386 ovl->pitch = ovl->xres_virtual;
2387
2388
2389 ovl->fb_size = ovl->cfg->max_xres * ovl->cfg->max_yres
2390 * format->bpp / 8 * 2;
2391 ovl->fb_mem = dma_alloc_coherent(dev, ovl->fb_size, &ovl->dma_handle,
2392 GFP_KERNEL);
2393 if (!ovl->fb_mem) {
2394 dev_err(dev, "unable to allocate buffer\n");
2395 return -ENOMEM;
2396 }
2397
2398 ret = sh_mobile_lcdc_overlay_fb_init(ovl);
2399 if (ret < 0)
2400 return ret;
2401
2402 return 0;
2403}
2404
2405static int
2406sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch)
2407{
2408 const struct sh_mobile_lcdc_format_info *format;
2409 const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg;
2410 struct device *dev = ch->lcdc->dev;
2411 const struct fb_videomode *max_mode;
2412 const struct fb_videomode *mode;
2413 unsigned int num_modes;
2414 unsigned int max_size;
2415 unsigned int i;
2416
2417
2418 format = sh_mobile_format_info(cfg->fourcc);
2419 if (format == NULL) {
2420 dev_err(dev, "Invalid FOURCC %08x.\n", cfg->fourcc);
2421 return -EINVAL;
2422 }
2423
2424
2425
2426
2427 max_mode = NULL;
2428 max_size = 0;
2429
2430 for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) {
2431 unsigned int size = mode->yres * mode->xres;
2432
2433
2434 if ((cfg->fourcc == V4L2_PIX_FMT_NV12 ||
2435 cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) {
2436 dev_err(dev, "yres must be multiple of 2 for "
2437 "YCbCr420 mode.\n");
2438 return -EINVAL;
2439 }
2440
2441 if (size > max_size) {
2442 max_mode = mode;
2443 max_size = size;
2444 }
2445 }
2446
2447 if (!max_size)
2448 max_size = MAX_XRES * MAX_YRES;
2449 else
2450 dev_dbg(dev, "Found largest videomode %ux%u\n",
2451 max_mode->xres, max_mode->yres);
2452
2453 if (cfg->lcd_modes == NULL) {
2454 mode = &default_720p;
2455 num_modes = 1;
2456 } else {
2457 mode = cfg->lcd_modes;
2458 num_modes = cfg->num_modes;
2459 }
2460
2461
2462
2463
2464 ch->format = format;
2465 ch->xres = mode->xres;
2466 ch->xres_virtual = mode->xres;
2467 ch->yres = mode->yres;
2468 ch->yres_virtual = mode->yres * 2;
2469
2470 if (!format->yuv) {
2471 ch->colorspace = V4L2_COLORSPACE_SRGB;
2472 ch->pitch = ch->xres_virtual * format->bpp / 8;
2473 } else {
2474 ch->colorspace = V4L2_COLORSPACE_REC709;
2475 ch->pitch = ch->xres_virtual;
2476 }
2477
2478 ch->display.width = cfg->panel_cfg.width;
2479 ch->display.height = cfg->panel_cfg.height;
2480 ch->display.mode = *mode;
2481
2482
2483 ch->fb_size = max_size * format->bpp / 8 * 2;
2484 ch->fb_mem = dma_alloc_coherent(dev, ch->fb_size, &ch->dma_handle,
2485 GFP_KERNEL);
2486 if (ch->fb_mem == NULL) {
2487 dev_err(dev, "unable to allocate buffer\n");
2488 return -ENOMEM;
2489 }
2490
2491
2492 if (cfg->tx_dev) {
2493 if (!cfg->tx_dev->dev.driver ||
2494 !try_module_get(cfg->tx_dev->dev.driver->owner)) {
2495 dev_warn(dev, "unable to get transmitter device\n");
2496 return -EINVAL;
2497 }
2498 ch->tx_dev = platform_get_drvdata(cfg->tx_dev);
2499 ch->tx_dev->lcdc = ch;
2500 ch->tx_dev->def_mode = *mode;
2501 }
2502
2503 return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes);
2504}
2505
2506static int sh_mobile_lcdc_probe(struct platform_device *pdev)
2507{
2508 struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
2509 struct sh_mobile_lcdc_priv *priv;
2510 struct resource *res;
2511 int num_channels;
2512 int error;
2513 int irq, i;
2514
2515 if (!pdata) {
2516 dev_err(&pdev->dev, "no platform data defined\n");
2517 return -EINVAL;
2518 }
2519
2520 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2521 irq = platform_get_irq(pdev, 0);
2522 if (!res || irq < 0) {
2523 dev_err(&pdev->dev, "cannot get platform resources\n");
2524 return -ENOENT;
2525 }
2526
2527 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2528 if (!priv)
2529 return -ENOMEM;
2530
2531 priv->dev = &pdev->dev;
2532
2533 for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
2534 mutex_init(&priv->ch[i].open_lock);
2535 platform_set_drvdata(pdev, priv);
2536
2537 error = request_irq(irq, sh_mobile_lcdc_irq, 0,
2538 dev_name(&pdev->dev), priv);
2539 if (error) {
2540 dev_err(&pdev->dev, "unable to request irq\n");
2541 goto err1;
2542 }
2543
2544 priv->irq = irq;
2545 atomic_set(&priv->hw_usecnt, -1);
2546
2547 for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) {
2548 struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels;
2549
2550 ch->lcdc = priv;
2551 ch->cfg = &pdata->ch[i];
2552
2553 error = sh_mobile_lcdc_check_interface(ch);
2554 if (error) {
2555 dev_err(&pdev->dev, "unsupported interface type\n");
2556 goto err1;
2557 }
2558 init_waitqueue_head(&ch->frame_end_wait);
2559 init_completion(&ch->vsync_completion);
2560
2561
2562 if (ch->cfg->bl_info.max_brightness)
2563 ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch);
2564
2565 switch (pdata->ch[i].chan) {
2566 case LCDC_CHAN_MAINLCD:
2567 ch->enabled = LDCNT2R_ME;
2568 ch->reg_offs = lcdc_offs_mainlcd;
2569 num_channels++;
2570 break;
2571 case LCDC_CHAN_SUBLCD:
2572 ch->enabled = LDCNT2R_SE;
2573 ch->reg_offs = lcdc_offs_sublcd;
2574 num_channels++;
2575 break;
2576 }
2577 }
2578
2579 if (!num_channels) {
2580 dev_err(&pdev->dev, "no channels defined\n");
2581 error = -EINVAL;
2582 goto err1;
2583 }
2584
2585
2586 if (num_channels == 2)
2587 priv->forced_fourcc = pdata->ch[0].fourcc;
2588
2589 priv->base = ioremap_nocache(res->start, resource_size(res));
2590 if (!priv->base) {
2591 error = -ENOMEM;
2592 goto err1;
2593 }
2594
2595 error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source);
2596 if (error) {
2597 dev_err(&pdev->dev, "unable to setup clocks\n");
2598 goto err1;
2599 }
2600
2601
2602 pm_runtime_enable(&pdev->dev);
2603
2604 for (i = 0; i < num_channels; i++) {
2605 struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
2606
2607 error = sh_mobile_lcdc_channel_init(ch);
2608 if (error)
2609 goto err1;
2610 }
2611
2612 for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) {
2613 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
2614
2615 ovl->cfg = &pdata->overlays[i];
2616 ovl->channel = &priv->ch[0];
2617
2618 error = sh_mobile_lcdc_overlay_init(ovl);
2619 if (error)
2620 goto err1;
2621 }
2622
2623 error = sh_mobile_lcdc_start(priv);
2624 if (error) {
2625 dev_err(&pdev->dev, "unable to start hardware\n");
2626 goto err1;
2627 }
2628
2629 for (i = 0; i < num_channels; i++) {
2630 struct sh_mobile_lcdc_chan *ch = priv->ch + i;
2631
2632 error = sh_mobile_lcdc_channel_fb_register(ch);
2633 if (error)
2634 goto err1;
2635 }
2636
2637 for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) {
2638 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
2639
2640 error = sh_mobile_lcdc_overlay_fb_register(ovl);
2641 if (error)
2642 goto err1;
2643 }
2644
2645 return 0;
2646err1:
2647 sh_mobile_lcdc_remove(pdev);
2648
2649 return error;
2650}
2651
2652static struct platform_driver sh_mobile_lcdc_driver = {
2653 .driver = {
2654 .name = "sh_mobile_lcdc_fb",
2655 .pm = &sh_mobile_lcdc_dev_pm_ops,
2656 },
2657 .probe = sh_mobile_lcdc_probe,
2658 .remove = sh_mobile_lcdc_remove,
2659};
2660
2661module_platform_driver(sh_mobile_lcdc_driver);
2662
2663MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver");
2664MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
2665MODULE_LICENSE("GPL v2");
2666
