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1 | /* |
2 | * SuperH Mobile LCDC Framebuffer |
3 | * |
4 | * Copyright (c) 2008 Magnus Damm |
5 | * |
6 | * This file is subject to the terms and conditions of the GNU General Public |
7 | * License. See the file "COPYING" in the main directory of this archive |
8 | * for more details. |
9 | */ |
10 | |
11 | #include <linux/atomic.h> |
12 | #include <linux/backlight.h> |
13 | #include <linux/clk.h> |
14 | #include <linux/console.h> |
15 | #include <linux/dma-mapping.h> |
16 | #include <linux/delay.h> |
17 | #include <linux/gpio.h> |
18 | #include <linux/init.h> |
19 | #include <linux/interrupt.h> |
20 | #include <linux/ioctl.h> |
21 | #include <linux/kernel.h> |
22 | #include <linux/mm.h> |
23 | #include <linux/module.h> |
24 | #include <linux/platform_device.h> |
25 | #include <linux/pm_runtime.h> |
26 | #include <linux/slab.h> |
27 | #include <linux/videodev2.h> |
28 | #include <linux/vmalloc.h> |
29 | |
30 | #include <video/sh_mobile_lcdc.h> |
31 | #include <video/sh_mobile_meram.h> |
32 | |
33 | #include "sh_mobile_lcdcfb.h" |
34 | |
35 | #define SIDE_B_OFFSET 0x1000 |
36 | #define MIRROR_OFFSET 0x2000 |
37 | |
38 | #define MAX_XRES 1920 |
39 | #define MAX_YRES 1080 |
40 | |
41 | struct sh_mobile_lcdc_priv { |
42 | void __iomem *base; |
43 | int irq; |
44 | atomic_t hw_usecnt; |
45 | struct device *dev; |
46 | struct clk *dot_clk; |
47 | unsigned long lddckr; |
48 | struct sh_mobile_lcdc_chan ch[2]; |
49 | struct notifier_block notifier; |
50 | int started; |
51 | int forced_fourcc; /* 2 channel LCDC must share fourcc setting */ |
52 | struct sh_mobile_meram_info *meram_dev; |
53 | }; |
54 | |
55 | /* ----------------------------------------------------------------------------- |
56 | * Registers access |
57 | */ |
58 | |
59 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
60 | [LDDCKPAT1R] = 0x400, |
61 | [LDDCKPAT2R] = 0x404, |
62 | [LDMT1R] = 0x418, |
63 | [LDMT2R] = 0x41c, |
64 | [LDMT3R] = 0x420, |
65 | [LDDFR] = 0x424, |
66 | [LDSM1R] = 0x428, |
67 | [LDSM2R] = 0x42c, |
68 | [LDSA1R] = 0x430, |
69 | [LDSA2R] = 0x434, |
70 | [LDMLSR] = 0x438, |
71 | [LDHCNR] = 0x448, |
72 | [LDHSYNR] = 0x44c, |
73 | [LDVLNR] = 0x450, |
74 | [LDVSYNR] = 0x454, |
75 | [LDPMR] = 0x460, |
76 | [LDHAJR] = 0x4a0, |
77 | }; |
78 | |
79 | static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { |
80 | [LDDCKPAT1R] = 0x408, |
81 | [LDDCKPAT2R] = 0x40c, |
82 | [LDMT1R] = 0x600, |
83 | [LDMT2R] = 0x604, |
84 | [LDMT3R] = 0x608, |
85 | [LDDFR] = 0x60c, |
86 | [LDSM1R] = 0x610, |
87 | [LDSM2R] = 0x614, |
88 | [LDSA1R] = 0x618, |
89 | [LDMLSR] = 0x620, |
90 | [LDHCNR] = 0x624, |
91 | [LDHSYNR] = 0x628, |
92 | [LDVLNR] = 0x62c, |
93 | [LDVSYNR] = 0x630, |
94 | [LDPMR] = 0x63c, |
95 | }; |
96 | |
97 | static bool banked(int reg_nr) |
98 | { |
99 | switch (reg_nr) { |
100 | case LDMT1R: |
101 | case LDMT2R: |
102 | case LDMT3R: |
103 | case LDDFR: |
104 | case LDSM1R: |
105 | case LDSA1R: |
106 | case LDSA2R: |
107 | case LDMLSR: |
108 | case LDHCNR: |
109 | case LDHSYNR: |
110 | case LDVLNR: |
111 | case LDVSYNR: |
112 | return true; |
113 | } |
114 | return false; |
115 | } |
116 | |
117 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) |
118 | { |
119 | return chan->cfg->chan == LCDC_CHAN_SUBLCD; |
120 | } |
121 | |
122 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
123 | int reg_nr, unsigned long data) |
124 | { |
125 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); |
126 | if (banked(reg_nr)) |
127 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + |
128 | SIDE_B_OFFSET); |
129 | } |
130 | |
131 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, |
132 | int reg_nr, unsigned long data) |
133 | { |
134 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + |
135 | MIRROR_OFFSET); |
136 | } |
137 | |
138 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, |
139 | int reg_nr) |
140 | { |
141 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); |
142 | } |
143 | |
144 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, |
145 | unsigned long reg_offs, unsigned long data) |
146 | { |
147 | iowrite32(data, priv->base + reg_offs); |
148 | } |
149 | |
150 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, |
151 | unsigned long reg_offs) |
152 | { |
153 | return ioread32(priv->base + reg_offs); |
154 | } |
155 | |
156 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, |
157 | unsigned long reg_offs, |
158 | unsigned long mask, unsigned long until) |
159 | { |
160 | while ((lcdc_read(priv, reg_offs) & mask) != until) |
161 | cpu_relax(); |
162 | } |
163 | |
164 | /* ----------------------------------------------------------------------------- |
165 | * Clock management |
166 | */ |
167 | |
168 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
169 | { |
170 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
171 | if (priv->dot_clk) |
172 | clk_enable(priv->dot_clk); |
173 | pm_runtime_get_sync(priv->dev); |
174 | if (priv->meram_dev && priv->meram_dev->pdev) |
175 | pm_runtime_get_sync(&priv->meram_dev->pdev->dev); |
176 | } |
177 | } |
178 | |
179 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) |
180 | { |
181 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
182 | if (priv->meram_dev && priv->meram_dev->pdev) |
183 | pm_runtime_put_sync(&priv->meram_dev->pdev->dev); |
184 | pm_runtime_put(priv->dev); |
185 | if (priv->dot_clk) |
186 | clk_disable(priv->dot_clk); |
187 | } |
188 | } |
189 | |
190 | static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv, |
191 | int clock_source) |
192 | { |
193 | struct clk *clk; |
194 | char *str; |
195 | |
196 | switch (clock_source) { |
197 | case LCDC_CLK_BUS: |
198 | str = "bus_clk"; |
199 | priv->lddckr = LDDCKR_ICKSEL_BUS; |
200 | break; |
201 | case LCDC_CLK_PERIPHERAL: |
202 | str = "peripheral_clk"; |
203 | priv->lddckr = LDDCKR_ICKSEL_MIPI; |
204 | break; |
205 | case LCDC_CLK_EXTERNAL: |
206 | str = NULL; |
207 | priv->lddckr = LDDCKR_ICKSEL_HDMI; |
208 | break; |
209 | default: |
210 | return -EINVAL; |
211 | } |
212 | |
213 | if (str == NULL) |
214 | return 0; |
215 | |
216 | clk = clk_get(priv->dev, str); |
217 | if (IS_ERR(clk)) { |
218 | dev_err(priv->dev, "cannot get dot clock %s\n", str); |
219 | return PTR_ERR(clk); |
220 | } |
221 | |
222 | priv->dot_clk = clk; |
223 | return 0; |
224 | } |
225 | |
226 | /* ----------------------------------------------------------------------------- |
227 | * Display, panel and deferred I/O |
228 | */ |
229 | |
230 | static void lcdc_sys_write_index(void *handle, unsigned long data) |
231 | { |
232 | struct sh_mobile_lcdc_chan *ch = handle; |
233 | |
234 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT); |
235 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
236 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | |
237 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); |
238 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
239 | } |
240 | |
241 | static void lcdc_sys_write_data(void *handle, unsigned long data) |
242 | { |
243 | struct sh_mobile_lcdc_chan *ch = handle; |
244 | |
245 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW); |
246 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
247 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | |
248 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); |
249 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
250 | } |
251 | |
252 | static unsigned long lcdc_sys_read_data(void *handle) |
253 | { |
254 | struct sh_mobile_lcdc_chan *ch = handle; |
255 | |
256 | lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR); |
257 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
258 | lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA | |
259 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); |
260 | udelay(1); |
261 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
262 | |
263 | return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK; |
264 | } |
265 | |
266 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { |
267 | lcdc_sys_write_index, |
268 | lcdc_sys_write_data, |
269 | lcdc_sys_read_data, |
270 | }; |
271 | |
272 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
273 | struct list_head *pagelist) |
274 | { |
275 | struct sh_mobile_lcdc_chan *ch = info->par; |
276 | unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT; |
277 | struct page *page; |
278 | int nr_pages = 0; |
279 | |
280 | sg_init_table(ch->sglist, nr_pages_max); |
281 | |
282 | list_for_each_entry(page, pagelist, lru) |
283 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); |
284 | |
285 | return nr_pages; |
286 | } |
287 | |
288 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
289 | struct list_head *pagelist) |
290 | { |
291 | struct sh_mobile_lcdc_chan *ch = info->par; |
292 | const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; |
293 | |
294 | /* enable clocks before accessing hardware */ |
295 | sh_mobile_lcdc_clk_on(ch->lcdc); |
296 | |
297 | /* |
298 | * It's possible to get here without anything on the pagelist via |
299 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() |
300 | * invocation. In the former case, the acceleration routines are |
301 | * stepped in to when using the framebuffer console causing the |
302 | * workqueue to be scheduled without any dirty pages on the list. |
303 | * |
304 | * Despite this, a panel update is still needed given that the |
305 | * acceleration routines have their own methods for writing in |
306 | * that still need to be updated. |
307 | * |
308 | * The fsync() and empty pagelist case could be optimized for, |
309 | * but we don't bother, as any application exhibiting such |
310 | * behaviour is fundamentally broken anyways. |
311 | */ |
312 | if (!list_empty(pagelist)) { |
313 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); |
314 | |
315 | /* trigger panel update */ |
316 | dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); |
317 | if (panel->start_transfer) |
318 | panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops); |
319 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
320 | dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages, |
321 | DMA_TO_DEVICE); |
322 | } else { |
323 | if (panel->start_transfer) |
324 | panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops); |
325 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
326 | } |
327 | } |
328 | |
329 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) |
330 | { |
331 | struct fb_deferred_io *fbdefio = info->fbdefio; |
332 | |
333 | if (fbdefio) |
334 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); |
335 | } |
336 | |
337 | static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch) |
338 | { |
339 | const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; |
340 | |
341 | if (ch->tx_dev) { |
342 | int ret; |
343 | |
344 | ret = ch->tx_dev->ops->display_on(ch->tx_dev); |
345 | if (ret < 0) |
346 | return; |
347 | |
348 | if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED) |
349 | ch->info->state = FBINFO_STATE_SUSPENDED; |
350 | } |
351 | |
352 | /* HDMI must be enabled before LCDC configuration */ |
353 | if (panel->display_on) |
354 | panel->display_on(); |
355 | } |
356 | |
357 | static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch) |
358 | { |
359 | const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; |
360 | |
361 | if (panel->display_off) |
362 | panel->display_off(); |
363 | |
364 | if (ch->tx_dev) |
365 | ch->tx_dev->ops->display_off(ch->tx_dev); |
366 | } |
367 | |
368 | static bool |
369 | sh_mobile_lcdc_must_reconfigure(struct sh_mobile_lcdc_chan *ch, |
370 | const struct fb_videomode *new_mode) |
371 | { |
372 | dev_dbg(ch->info->dev, "Old %ux%u, new %ux%u\n", |
373 | ch->display.mode.xres, ch->display.mode.yres, |
374 | new_mode->xres, new_mode->yres); |
375 | |
376 | /* It can be a different monitor with an equal video-mode */ |
377 | if (fb_mode_is_equal(&ch->display.mode, new_mode)) |
378 | return false; |
379 | |
380 | dev_dbg(ch->info->dev, "Switching %u -> %u lines\n", |
381 | ch->display.mode.yres, new_mode->yres); |
382 | ch->display.mode = *new_mode; |
383 | |
384 | return true; |
385 | } |
386 | |
387 | static int sh_mobile_check_var(struct fb_var_screeninfo *var, |
388 | struct fb_info *info); |
389 | |
390 | static int sh_mobile_lcdc_display_notify(struct sh_mobile_lcdc_chan *ch, |
391 | enum sh_mobile_lcdc_entity_event event, |
392 | const struct fb_videomode *mode, |
393 | const struct fb_monspecs *monspec) |
394 | { |
395 | struct fb_info *info = ch->info; |
396 | struct fb_var_screeninfo var; |
397 | int ret = 0; |
398 | |
399 | switch (event) { |
400 | case SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT: |
401 | /* HDMI plug in */ |
402 | if (lock_fb_info(info)) { |
403 | console_lock(); |
404 | |
405 | ch->display.width = monspec->max_x * 10; |
406 | ch->display.height = monspec->max_y * 10; |
407 | |
408 | if (!sh_mobile_lcdc_must_reconfigure(ch, mode) && |
409 | info->state == FBINFO_STATE_RUNNING) { |
410 | /* First activation with the default monitor. |
411 | * Just turn on, if we run a resume here, the |
412 | * logo disappears. |
413 | */ |
414 | info->var.width = monspec->max_x * 10; |
415 | info->var.height = monspec->max_y * 10; |
416 | sh_mobile_lcdc_display_on(ch); |
417 | } else { |
418 | /* New monitor or have to wake up */ |
419 | fb_set_suspend(info, 0); |
420 | } |
421 | |
422 | console_unlock(); |
423 | unlock_fb_info(info); |
424 | } |
425 | break; |
426 | |
427 | case SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT: |
428 | /* HDMI disconnect */ |
429 | if (lock_fb_info(info)) { |
430 | console_lock(); |
431 | fb_set_suspend(info, 1); |
432 | console_unlock(); |
433 | unlock_fb_info(info); |
434 | } |
435 | break; |
436 | |
437 | case SH_MOBILE_LCDC_EVENT_DISPLAY_MODE: |
438 | /* Validate a proposed new mode */ |
439 | fb_videomode_to_var(&var, mode); |
440 | var.bits_per_pixel = info->var.bits_per_pixel; |
441 | var.grayscale = info->var.grayscale; |
442 | ret = sh_mobile_check_var(&var, info); |
443 | break; |
444 | } |
445 | |
446 | return ret; |
447 | } |
448 | |
449 | /* ----------------------------------------------------------------------------- |
450 | * Format helpers |
451 | */ |
452 | |
453 | struct sh_mobile_lcdc_format_info { |
454 | u32 fourcc; |
455 | unsigned int bpp; |
456 | bool yuv; |
457 | u32 lddfr; |
458 | }; |
459 | |
460 | static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = { |
461 | { |
462 | .fourcc = V4L2_PIX_FMT_RGB565, |
463 | .bpp = 16, |
464 | .yuv = false, |
465 | .lddfr = LDDFR_PKF_RGB16, |
466 | }, { |
467 | .fourcc = V4L2_PIX_FMT_BGR24, |
468 | .bpp = 24, |
469 | .yuv = false, |
470 | .lddfr = LDDFR_PKF_RGB24, |
471 | }, { |
472 | .fourcc = V4L2_PIX_FMT_BGR32, |
473 | .bpp = 32, |
474 | .yuv = false, |
475 | .lddfr = LDDFR_PKF_ARGB32, |
476 | }, { |
477 | .fourcc = V4L2_PIX_FMT_NV12, |
478 | .bpp = 12, |
479 | .yuv = true, |
480 | .lddfr = LDDFR_CC | LDDFR_YF_420, |
481 | }, { |
482 | .fourcc = V4L2_PIX_FMT_NV21, |
483 | .bpp = 12, |
484 | .yuv = true, |
485 | .lddfr = LDDFR_CC | LDDFR_YF_420, |
486 | }, { |
487 | .fourcc = V4L2_PIX_FMT_NV16, |
488 | .bpp = 16, |
489 | .yuv = true, |
490 | .lddfr = LDDFR_CC | LDDFR_YF_422, |
491 | }, { |
492 | .fourcc = V4L2_PIX_FMT_NV61, |
493 | .bpp = 16, |
494 | .yuv = true, |
495 | .lddfr = LDDFR_CC | LDDFR_YF_422, |
496 | }, { |
497 | .fourcc = V4L2_PIX_FMT_NV24, |
498 | .bpp = 24, |
499 | .yuv = true, |
500 | .lddfr = LDDFR_CC | LDDFR_YF_444, |
501 | }, { |
502 | .fourcc = V4L2_PIX_FMT_NV42, |
503 | .bpp = 24, |
504 | .yuv = true, |
505 | .lddfr = LDDFR_CC | LDDFR_YF_444, |
506 | }, |
507 | }; |
508 | |
509 | static const struct sh_mobile_lcdc_format_info * |
510 | sh_mobile_format_info(u32 fourcc) |
511 | { |
512 | unsigned int i; |
513 | |
514 | for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) { |
515 | if (sh_mobile_format_infos[i].fourcc == fourcc) |
516 | return &sh_mobile_format_infos[i]; |
517 | } |
518 | |
519 | return NULL; |
520 | } |
521 | |
522 | static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var) |
523 | { |
524 | if (var->grayscale > 1) |
525 | return var->grayscale; |
526 | |
527 | switch (var->bits_per_pixel) { |
528 | case 16: |
529 | return V4L2_PIX_FMT_RGB565; |
530 | case 24: |
531 | return V4L2_PIX_FMT_BGR24; |
532 | case 32: |
533 | return V4L2_PIX_FMT_BGR32; |
534 | default: |
535 | return 0; |
536 | } |
537 | } |
538 | |
539 | static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var) |
540 | { |
541 | return var->grayscale > 1; |
542 | } |
543 | |
544 | /* ----------------------------------------------------------------------------- |
545 | * Start, stop and IRQ |
546 | */ |
547 | |
548 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) |
549 | { |
550 | struct sh_mobile_lcdc_priv *priv = data; |
551 | struct sh_mobile_lcdc_chan *ch; |
552 | unsigned long ldintr; |
553 | int is_sub; |
554 | int k; |
555 | |
556 | /* Acknowledge interrupts and disable further VSYNC End IRQs. */ |
557 | ldintr = lcdc_read(priv, _LDINTR); |
558 | lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE); |
559 | |
560 | /* figure out if this interrupt is for main or sub lcd */ |
561 | is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0; |
562 | |
563 | /* wake up channel and disable clocks */ |
564 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
565 | ch = &priv->ch[k]; |
566 | |
567 | if (!ch->enabled) |
568 | continue; |
569 | |
570 | /* Frame End */ |
571 | if (ldintr & LDINTR_FS) { |
572 | if (is_sub == lcdc_chan_is_sublcd(ch)) { |
573 | ch->frame_end = 1; |
574 | wake_up(&ch->frame_end_wait); |
575 | |
576 | sh_mobile_lcdc_clk_off(priv); |
577 | } |
578 | } |
579 | |
580 | /* VSYNC End */ |
581 | if (ldintr & LDINTR_VES) |
582 | complete(&ch->vsync_completion); |
583 | } |
584 | |
585 | return IRQ_HANDLED; |
586 | } |
587 | |
588 | static int sh_mobile_wait_for_vsync(struct sh_mobile_lcdc_chan *ch) |
589 | { |
590 | unsigned long ldintr; |
591 | int ret; |
592 | |
593 | /* Enable VSync End interrupt and be careful not to acknowledge any |
594 | * pending interrupt. |
595 | */ |
596 | ldintr = lcdc_read(ch->lcdc, _LDINTR); |
597 | ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK; |
598 | lcdc_write(ch->lcdc, _LDINTR, ldintr); |
599 | |
600 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, |
601 | msecs_to_jiffies(100)); |
602 | if (!ret) |
603 | return -ETIMEDOUT; |
604 | |
605 | return 0; |
606 | } |
607 | |
608 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
609 | int start) |
610 | { |
611 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); |
612 | int k; |
613 | |
614 | /* start or stop the lcdc */ |
615 | if (start) |
616 | lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO); |
617 | else |
618 | lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO); |
619 | |
620 | /* wait until power is applied/stopped on all channels */ |
621 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) |
622 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) |
623 | while (1) { |
624 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) |
625 | & LDPMR_LPS; |
626 | if (start && tmp == LDPMR_LPS) |
627 | break; |
628 | if (!start && tmp == 0) |
629 | break; |
630 | cpu_relax(); |
631 | } |
632 | |
633 | if (!start) |
634 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ |
635 | } |
636 | |
637 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
638 | { |
639 | const struct fb_var_screeninfo *var = &ch->info->var; |
640 | const struct fb_videomode *mode = &ch->display.mode; |
641 | unsigned long h_total, hsync_pos, display_h_total; |
642 | u32 tmp; |
643 | |
644 | tmp = ch->ldmt1r_value; |
645 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL; |
646 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL; |
647 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0; |
648 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0; |
649 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0; |
650 | tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0; |
651 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0; |
652 | lcdc_write_chan(ch, LDMT1R, tmp); |
653 | |
654 | /* setup SYS bus */ |
655 | lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r); |
656 | lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r); |
657 | |
658 | /* horizontal configuration */ |
659 | h_total = mode->xres + mode->hsync_len + mode->left_margin |
660 | + mode->right_margin; |
661 | tmp = h_total / 8; /* HTCN */ |
662 | tmp |= (min(mode->xres, ch->xres) / 8) << 16; /* HDCN */ |
663 | lcdc_write_chan(ch, LDHCNR, tmp); |
664 | |
665 | hsync_pos = mode->xres + mode->right_margin; |
666 | tmp = hsync_pos / 8; /* HSYNP */ |
667 | tmp |= (mode->hsync_len / 8) << 16; /* HSYNW */ |
668 | lcdc_write_chan(ch, LDHSYNR, tmp); |
669 | |
670 | /* vertical configuration */ |
671 | tmp = mode->yres + mode->vsync_len + mode->upper_margin |
672 | + mode->lower_margin; /* VTLN */ |
673 | tmp |= min(mode->yres, ch->yres) << 16; /* VDLN */ |
674 | lcdc_write_chan(ch, LDVLNR, tmp); |
675 | |
676 | tmp = mode->yres + mode->lower_margin; /* VSYNP */ |
677 | tmp |= mode->vsync_len << 16; /* VSYNW */ |
678 | lcdc_write_chan(ch, LDVSYNR, tmp); |
679 | |
680 | /* Adjust horizontal synchronisation for HDMI */ |
681 | display_h_total = mode->xres + mode->hsync_len + mode->left_margin |
682 | + mode->right_margin; |
683 | tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16) |
684 | | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7); |
685 | lcdc_write_chan(ch, LDHAJR, tmp); |
686 | } |
687 | |
688 | /* |
689 | * __sh_mobile_lcdc_start - Configure and tart the LCDC |
690 | * @priv: LCDC device |
691 | * |
692 | * Configure all enabled channels and start the LCDC device. All external |
693 | * devices (clocks, MERAM, panels, ...) are not touched by this function. |
694 | */ |
695 | static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
696 | { |
697 | struct sh_mobile_lcdc_chan *ch; |
698 | unsigned long tmp; |
699 | int k, m; |
700 | |
701 | /* Enable LCDC channels. Read data from external memory, avoid using the |
702 | * BEU for now. |
703 | */ |
704 | lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled); |
705 | |
706 | /* Stop the LCDC first and disable all interrupts. */ |
707 | sh_mobile_lcdc_start_stop(priv, 0); |
708 | lcdc_write(priv, _LDINTR, 0); |
709 | |
710 | /* Configure power supply, dot clocks and start them. */ |
711 | tmp = priv->lddckr; |
712 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
713 | ch = &priv->ch[k]; |
714 | if (!ch->enabled) |
715 | continue; |
716 | |
717 | /* Power supply */ |
718 | lcdc_write_chan(ch, LDPMR, 0); |
719 | |
720 | m = ch->cfg->clock_divider; |
721 | if (!m) |
722 | continue; |
723 | |
724 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider |
725 | * denominator. |
726 | */ |
727 | lcdc_write_chan(ch, LDDCKPAT1R, 0); |
728 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); |
729 | |
730 | if (m == 1) |
731 | m = LDDCKR_MOSEL; |
732 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); |
733 | } |
734 | |
735 | lcdc_write(priv, _LDDCKR, tmp); |
736 | lcdc_write(priv, _LDDCKSTPR, 0); |
737 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); |
738 | |
739 | /* Setup geometry, format, frame buffer memory and operation mode. */ |
740 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
741 | ch = &priv->ch[k]; |
742 | if (!ch->enabled) |
743 | continue; |
744 | |
745 | sh_mobile_lcdc_geometry(ch); |
746 | |
747 | tmp = ch->format->lddfr; |
748 | |
749 | if (ch->format->yuv) { |
750 | switch (ch->colorspace) { |
751 | case V4L2_COLORSPACE_REC709: |
752 | tmp |= LDDFR_CF1; |
753 | break; |
754 | case V4L2_COLORSPACE_JPEG: |
755 | tmp |= LDDFR_CF0; |
756 | break; |
757 | } |
758 | } |
759 | |
760 | lcdc_write_chan(ch, LDDFR, tmp); |
761 | lcdc_write_chan(ch, LDMLSR, ch->pitch); |
762 | lcdc_write_chan(ch, LDSA1R, ch->base_addr_y); |
763 | if (ch->format->yuv) |
764 | lcdc_write_chan(ch, LDSA2R, ch->base_addr_c); |
765 | |
766 | /* When using deferred I/O mode, configure the LCDC for one-shot |
767 | * operation and enable the frame end interrupt. Otherwise use |
768 | * continuous read mode. |
769 | */ |
770 | if (ch->ldmt1r_value & LDMT1R_IFM && |
771 | ch->cfg->sys_bus_cfg.deferred_io_msec) { |
772 | lcdc_write_chan(ch, LDSM1R, LDSM1R_OS); |
773 | lcdc_write(priv, _LDINTR, LDINTR_FE); |
774 | } else { |
775 | lcdc_write_chan(ch, LDSM1R, 0); |
776 | } |
777 | } |
778 | |
779 | /* Word and long word swap. */ |
780 | switch (priv->ch[0].format->fourcc) { |
781 | case V4L2_PIX_FMT_RGB565: |
782 | case V4L2_PIX_FMT_NV21: |
783 | case V4L2_PIX_FMT_NV61: |
784 | case V4L2_PIX_FMT_NV42: |
785 | tmp = LDDDSR_LS | LDDDSR_WS; |
786 | break; |
787 | case V4L2_PIX_FMT_BGR24: |
788 | case V4L2_PIX_FMT_NV12: |
789 | case V4L2_PIX_FMT_NV16: |
790 | case V4L2_PIX_FMT_NV24: |
791 | tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; |
792 | break; |
793 | case V4L2_PIX_FMT_BGR32: |
794 | default: |
795 | tmp = LDDDSR_LS; |
796 | break; |
797 | } |
798 | lcdc_write(priv, _LDDDSR, tmp); |
799 | |
800 | /* Enable the display output. */ |
801 | lcdc_write(priv, _LDCNT1R, LDCNT1R_DE); |
802 | sh_mobile_lcdc_start_stop(priv, 1); |
803 | priv->started = 1; |
804 | } |
805 | |
806 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
807 | { |
808 | struct sh_mobile_meram_info *mdev = priv->meram_dev; |
809 | struct sh_mobile_lcdc_chan *ch; |
810 | unsigned long tmp; |
811 | int ret; |
812 | int k; |
813 | |
814 | /* enable clocks before accessing the hardware */ |
815 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
816 | if (priv->ch[k].enabled) |
817 | sh_mobile_lcdc_clk_on(priv); |
818 | } |
819 | |
820 | /* reset */ |
821 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR); |
822 | lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0); |
823 | |
824 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
825 | const struct sh_mobile_lcdc_panel_cfg *panel; |
826 | |
827 | ch = &priv->ch[k]; |
828 | if (!ch->enabled) |
829 | continue; |
830 | |
831 | panel = &ch->cfg->panel_cfg; |
832 | if (panel->setup_sys) { |
833 | ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops); |
834 | if (ret) |
835 | return ret; |
836 | } |
837 | } |
838 | |
839 | /* Compute frame buffer base address and pitch for each channel. */ |
840 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
841 | int pixelformat; |
842 | void *meram; |
843 | |
844 | ch = &priv->ch[k]; |
845 | if (!ch->enabled) |
846 | continue; |
847 | |
848 | ch->base_addr_y = ch->dma_handle; |
849 | ch->base_addr_c = ch->base_addr_y + ch->xres * ch->yres_virtual; |
850 | |
851 | /* Enable MERAM if possible. */ |
852 | if (mdev == NULL || mdev->ops == NULL || |
853 | ch->cfg->meram_cfg == NULL) |
854 | continue; |
855 | |
856 | /* we need to de-init configured ICBs before we can |
857 | * re-initialize them. |
858 | */ |
859 | if (ch->meram) { |
860 | mdev->ops->meram_unregister(mdev, ch->meram); |
861 | ch->meram = NULL; |
862 | } |
863 | |
864 | switch (ch->format->fourcc) { |
865 | case V4L2_PIX_FMT_NV12: |
866 | case V4L2_PIX_FMT_NV21: |
867 | case V4L2_PIX_FMT_NV16: |
868 | case V4L2_PIX_FMT_NV61: |
869 | pixelformat = SH_MOBILE_MERAM_PF_NV; |
870 | break; |
871 | case V4L2_PIX_FMT_NV24: |
872 | case V4L2_PIX_FMT_NV42: |
873 | pixelformat = SH_MOBILE_MERAM_PF_NV24; |
874 | break; |
875 | case V4L2_PIX_FMT_RGB565: |
876 | case V4L2_PIX_FMT_BGR24: |
877 | case V4L2_PIX_FMT_BGR32: |
878 | default: |
879 | pixelformat = SH_MOBILE_MERAM_PF_RGB; |
880 | break; |
881 | } |
882 | |
883 | meram = mdev->ops->meram_register(mdev, ch->cfg->meram_cfg, |
884 | ch->pitch, ch->yres, pixelformat, |
885 | &ch->pitch); |
886 | if (!IS_ERR(meram)) { |
887 | mdev->ops->meram_update(mdev, meram, |
888 | ch->base_addr_y, ch->base_addr_c, |
889 | &ch->base_addr_y, &ch->base_addr_c); |
890 | ch->meram = meram; |
891 | } |
892 | } |
893 | |
894 | /* Start the LCDC. */ |
895 | __sh_mobile_lcdc_start(priv); |
896 | |
897 | /* Setup deferred I/O, tell the board code to enable the panels, and |
898 | * turn backlight on. |
899 | */ |
900 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
901 | ch = &priv->ch[k]; |
902 | if (!ch->enabled) |
903 | continue; |
904 | |
905 | tmp = ch->cfg->sys_bus_cfg.deferred_io_msec; |
906 | if (ch->ldmt1r_value & LDMT1R_IFM && tmp) { |
907 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; |
908 | ch->defio.delay = msecs_to_jiffies(tmp); |
909 | ch->info->fbdefio = &ch->defio; |
910 | fb_deferred_io_init(ch->info); |
911 | } |
912 | |
913 | sh_mobile_lcdc_display_on(ch); |
914 | |
915 | if (ch->bl) { |
916 | ch->bl->props.power = FB_BLANK_UNBLANK; |
917 | backlight_update_status(ch->bl); |
918 | } |
919 | } |
920 | |
921 | return 0; |
922 | } |
923 | |
924 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) |
925 | { |
926 | struct sh_mobile_lcdc_chan *ch; |
927 | int k; |
928 | |
929 | /* clean up deferred io and ask board code to disable panel */ |
930 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
931 | ch = &priv->ch[k]; |
932 | if (!ch->enabled) |
933 | continue; |
934 | |
935 | /* deferred io mode: |
936 | * flush frame, and wait for frame end interrupt |
937 | * clean up deferred io and enable clock |
938 | */ |
939 | if (ch->info && ch->info->fbdefio) { |
940 | ch->frame_end = 0; |
941 | schedule_delayed_work(&ch->info->deferred_work, 0); |
942 | wait_event(ch->frame_end_wait, ch->frame_end); |
943 | fb_deferred_io_cleanup(ch->info); |
944 | ch->info->fbdefio = NULL; |
945 | sh_mobile_lcdc_clk_on(priv); |
946 | } |
947 | |
948 | if (ch->bl) { |
949 | ch->bl->props.power = FB_BLANK_POWERDOWN; |
950 | backlight_update_status(ch->bl); |
951 | } |
952 | |
953 | sh_mobile_lcdc_display_off(ch); |
954 | |
955 | /* disable the meram */ |
956 | if (ch->meram) { |
957 | struct sh_mobile_meram_info *mdev; |
958 | mdev = priv->meram_dev; |
959 | mdev->ops->meram_unregister(mdev, ch->meram); |
960 | ch->meram = 0; |
961 | } |
962 | |
963 | } |
964 | |
965 | /* stop the lcdc */ |
966 | if (priv->started) { |
967 | sh_mobile_lcdc_start_stop(priv, 0); |
968 | priv->started = 0; |
969 | } |
970 | |
971 | /* stop clocks */ |
972 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) |
973 | if (priv->ch[k].enabled) |
974 | sh_mobile_lcdc_clk_off(priv); |
975 | } |
976 | |
977 | /* ----------------------------------------------------------------------------- |
978 | * Frame buffer operations |
979 | */ |
980 | |
981 | static int sh_mobile_lcdc_setcolreg(u_int regno, |
982 | u_int red, u_int green, u_int blue, |
983 | u_int transp, struct fb_info *info) |
984 | { |
985 | u32 *palette = info->pseudo_palette; |
986 | |
987 | if (regno >= PALETTE_NR) |
988 | return -EINVAL; |
989 | |
990 | /* only FB_VISUAL_TRUECOLOR supported */ |
991 | |
992 | red >>= 16 - info->var.red.length; |
993 | green >>= 16 - info->var.green.length; |
994 | blue >>= 16 - info->var.blue.length; |
995 | transp >>= 16 - info->var.transp.length; |
996 | |
997 | palette[regno] = (red << info->var.red.offset) | |
998 | (green << info->var.green.offset) | |
999 | (blue << info->var.blue.offset) | |
1000 | (transp << info->var.transp.offset); |
1001 | |
1002 | return 0; |
1003 | } |
1004 | |
1005 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { |
1006 | .id = "SH Mobile LCDC", |
1007 | .type = FB_TYPE_PACKED_PIXELS, |
1008 | .visual = FB_VISUAL_TRUECOLOR, |
1009 | .accel = FB_ACCEL_NONE, |
1010 | .xpanstep = 0, |
1011 | .ypanstep = 1, |
1012 | .ywrapstep = 0, |
1013 | .capabilities = FB_CAP_FOURCC, |
1014 | }; |
1015 | |
1016 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
1017 | const struct fb_fillrect *rect) |
1018 | { |
1019 | sys_fillrect(info, rect); |
1020 | sh_mobile_lcdc_deferred_io_touch(info); |
1021 | } |
1022 | |
1023 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, |
1024 | const struct fb_copyarea *area) |
1025 | { |
1026 | sys_copyarea(info, area); |
1027 | sh_mobile_lcdc_deferred_io_touch(info); |
1028 | } |
1029 | |
1030 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, |
1031 | const struct fb_image *image) |
1032 | { |
1033 | sys_imageblit(info, image); |
1034 | sh_mobile_lcdc_deferred_io_touch(info); |
1035 | } |
1036 | |
1037 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
1038 | struct fb_info *info) |
1039 | { |
1040 | struct sh_mobile_lcdc_chan *ch = info->par; |
1041 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
1042 | unsigned long ldrcntr; |
1043 | unsigned long new_pan_offset; |
1044 | unsigned long base_addr_y, base_addr_c; |
1045 | unsigned long c_offset; |
1046 | |
1047 | if (!ch->format->yuv) |
1048 | new_pan_offset = var->yoffset * ch->pitch |
1049 | + var->xoffset * (ch->format->bpp / 8); |
1050 | else |
1051 | new_pan_offset = var->yoffset * ch->pitch + var->xoffset; |
1052 | |
1053 | if (new_pan_offset == ch->pan_offset) |
1054 | return 0; /* No change, do nothing */ |
1055 | |
1056 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
1057 | |
1058 | /* Set the source address for the next refresh */ |
1059 | base_addr_y = ch->dma_handle + new_pan_offset; |
1060 | if (ch->format->yuv) { |
1061 | /* Set y offset */ |
1062 | c_offset = var->yoffset * ch->pitch |
1063 | * (ch->format->bpp - 8) / 8; |
1064 | base_addr_c = ch->dma_handle + ch->xres * ch->yres_virtual |
1065 | + c_offset; |
1066 | /* Set x offset */ |
1067 | if (ch->format->fourcc == V4L2_PIX_FMT_NV24) |
1068 | base_addr_c += 2 * var->xoffset; |
1069 | else |
1070 | base_addr_c += var->xoffset; |
1071 | } |
1072 | |
1073 | if (ch->meram) { |
1074 | struct sh_mobile_meram_info *mdev; |
1075 | |
1076 | mdev = priv->meram_dev; |
1077 | mdev->ops->meram_update(mdev, ch->meram, |
1078 | base_addr_y, base_addr_c, |
1079 | &base_addr_y, &base_addr_c); |
1080 | } |
1081 | |
1082 | ch->base_addr_y = base_addr_y; |
1083 | ch->base_addr_c = base_addr_c; |
1084 | |
1085 | lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); |
1086 | if (ch->format->yuv) |
1087 | lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); |
1088 | |
1089 | if (lcdc_chan_is_sublcd(ch)) |
1090 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); |
1091 | else |
1092 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); |
1093 | |
1094 | ch->pan_offset = new_pan_offset; |
1095 | |
1096 | sh_mobile_lcdc_deferred_io_touch(info); |
1097 | |
1098 | return 0; |
1099 | } |
1100 | |
1101 | static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd, |
1102 | unsigned long arg) |
1103 | { |
1104 | int retval; |
1105 | |
1106 | switch (cmd) { |
1107 | case FBIO_WAITFORVSYNC: |
1108 | retval = sh_mobile_wait_for_vsync(info->par); |
1109 | break; |
1110 | |
1111 | default: |
1112 | retval = -ENOIOCTLCMD; |
1113 | break; |
1114 | } |
1115 | return retval; |
1116 | } |
1117 | |
1118 | static void sh_mobile_fb_reconfig(struct fb_info *info) |
1119 | { |
1120 | struct sh_mobile_lcdc_chan *ch = info->par; |
1121 | struct fb_var_screeninfo var; |
1122 | struct fb_videomode mode; |
1123 | struct fb_event event; |
1124 | int evnt = FB_EVENT_MODE_CHANGE_ALL; |
1125 | |
1126 | if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) |
1127 | /* More framebuffer users are active */ |
1128 | return; |
1129 | |
1130 | fb_var_to_videomode(&mode, &info->var); |
1131 | |
1132 | if (fb_mode_is_equal(&ch->display.mode, &mode)) |
1133 | return; |
1134 | |
1135 | /* Display has been re-plugged, framebuffer is free now, reconfigure */ |
1136 | var = info->var; |
1137 | fb_videomode_to_var(&var, &ch->display.mode); |
1138 | var.width = ch->display.width; |
1139 | var.height = ch->display.height; |
1140 | var.activate = FB_ACTIVATE_NOW; |
1141 | |
1142 | if (fb_set_var(info, &var) < 0) |
1143 | /* Couldn't reconfigure, hopefully, can continue as before */ |
1144 | return; |
1145 | |
1146 | /* |
1147 | * fb_set_var() calls the notifier change internally, only if |
1148 | * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a |
1149 | * user event, we have to call the chain ourselves. |
1150 | */ |
1151 | event.info = info; |
1152 | event.data = &ch->display.mode; |
1153 | fb_notifier_call_chain(evnt, &event); |
1154 | } |
1155 | |
1156 | /* |
1157 | * Locking: both .fb_release() and .fb_open() are called with info->lock held if |
1158 | * user == 1, or with console sem held, if user == 0. |
1159 | */ |
1160 | static int sh_mobile_release(struct fb_info *info, int user) |
1161 | { |
1162 | struct sh_mobile_lcdc_chan *ch = info->par; |
1163 | |
1164 | mutex_lock(&ch->open_lock); |
1165 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); |
1166 | |
1167 | ch->use_count--; |
1168 | |
1169 | /* Nothing to reconfigure, when called from fbcon */ |
1170 | if (user) { |
1171 | console_lock(); |
1172 | sh_mobile_fb_reconfig(info); |
1173 | console_unlock(); |
1174 | } |
1175 | |
1176 | mutex_unlock(&ch->open_lock); |
1177 | |
1178 | return 0; |
1179 | } |
1180 | |
1181 | static int sh_mobile_open(struct fb_info *info, int user) |
1182 | { |
1183 | struct sh_mobile_lcdc_chan *ch = info->par; |
1184 | |
1185 | mutex_lock(&ch->open_lock); |
1186 | ch->use_count++; |
1187 | |
1188 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); |
1189 | mutex_unlock(&ch->open_lock); |
1190 | |
1191 | return 0; |
1192 | } |
1193 | |
1194 | static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
1195 | { |
1196 | struct sh_mobile_lcdc_chan *ch = info->par; |
1197 | struct sh_mobile_lcdc_priv *p = ch->lcdc; |
1198 | unsigned int best_dist = (unsigned int)-1; |
1199 | unsigned int best_xres = 0; |
1200 | unsigned int best_yres = 0; |
1201 | unsigned int i; |
1202 | |
1203 | if (var->xres > MAX_XRES || var->yres > MAX_YRES) |
1204 | return -EINVAL; |
1205 | |
1206 | /* If board code provides us with a list of available modes, make sure |
1207 | * we use one of them. Find the mode closest to the requested one. The |
1208 | * distance between two modes is defined as the size of the |
1209 | * non-overlapping parts of the two rectangles. |
1210 | */ |
1211 | for (i = 0; i < ch->cfg->num_modes; ++i) { |
1212 | const struct fb_videomode *mode = &ch->cfg->lcd_modes[i]; |
1213 | unsigned int dist; |
1214 | |
1215 | /* We can only round up. */ |
1216 | if (var->xres > mode->xres || var->yres > mode->yres) |
1217 | continue; |
1218 | |
1219 | dist = var->xres * var->yres + mode->xres * mode->yres |
1220 | - 2 * min(var->xres, mode->xres) |
1221 | * min(var->yres, mode->yres); |
1222 | |
1223 | if (dist < best_dist) { |
1224 | best_xres = mode->xres; |
1225 | best_yres = mode->yres; |
1226 | best_dist = dist; |
1227 | } |
1228 | } |
1229 | |
1230 | /* If no available mode can be used, return an error. */ |
1231 | if (ch->cfg->num_modes != 0) { |
1232 | if (best_dist == (unsigned int)-1) |
1233 | return -EINVAL; |
1234 | |
1235 | var->xres = best_xres; |
1236 | var->yres = best_yres; |
1237 | } |
1238 | |
1239 | /* Make sure the virtual resolution is at least as big as the visible |
1240 | * resolution. |
1241 | */ |
1242 | if (var->xres_virtual < var->xres) |
1243 | var->xres_virtual = var->xres; |
1244 | if (var->yres_virtual < var->yres) |
1245 | var->yres_virtual = var->yres; |
1246 | |
1247 | if (sh_mobile_format_is_fourcc(var)) { |
1248 | const struct sh_mobile_lcdc_format_info *format; |
1249 | |
1250 | format = sh_mobile_format_info(var->grayscale); |
1251 | if (format == NULL) |
1252 | return -EINVAL; |
1253 | var->bits_per_pixel = format->bpp; |
1254 | |
1255 | /* Default to RGB and JPEG color-spaces for RGB and YUV formats |
1256 | * respectively. |
1257 | */ |
1258 | if (!format->yuv) |
1259 | var->colorspace = V4L2_COLORSPACE_SRGB; |
1260 | else if (var->colorspace != V4L2_COLORSPACE_REC709) |
1261 | var->colorspace = V4L2_COLORSPACE_JPEG; |
1262 | } else { |
1263 | if (var->bits_per_pixel <= 16) { /* RGB 565 */ |
1264 | var->bits_per_pixel = 16; |
1265 | var->red.offset = 11; |
1266 | var->red.length = 5; |
1267 | var->green.offset = 5; |
1268 | var->green.length = 6; |
1269 | var->blue.offset = 0; |
1270 | var->blue.length = 5; |
1271 | var->transp.offset = 0; |
1272 | var->transp.length = 0; |
1273 | } else if (var->bits_per_pixel <= 24) { /* RGB 888 */ |
1274 | var->bits_per_pixel = 24; |
1275 | var->red.offset = 16; |
1276 | var->red.length = 8; |
1277 | var->green.offset = 8; |
1278 | var->green.length = 8; |
1279 | var->blue.offset = 0; |
1280 | var->blue.length = 8; |
1281 | var->transp.offset = 0; |
1282 | var->transp.length = 0; |
1283 | } else if (var->bits_per_pixel <= 32) { /* RGBA 888 */ |
1284 | var->bits_per_pixel = 32; |
1285 | var->red.offset = 16; |
1286 | var->red.length = 8; |
1287 | var->green.offset = 8; |
1288 | var->green.length = 8; |
1289 | var->blue.offset = 0; |
1290 | var->blue.length = 8; |
1291 | var->transp.offset = 24; |
1292 | var->transp.length = 8; |
1293 | } else |
1294 | return -EINVAL; |
1295 | |
1296 | var->red.msb_right = 0; |
1297 | var->green.msb_right = 0; |
1298 | var->blue.msb_right = 0; |
1299 | var->transp.msb_right = 0; |
1300 | } |
1301 | |
1302 | /* Make sure we don't exceed our allocated memory. */ |
1303 | if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 > |
1304 | info->fix.smem_len) |
1305 | return -EINVAL; |
1306 | |
1307 | /* only accept the forced_fourcc for dual channel configurations */ |
1308 | if (p->forced_fourcc && |
1309 | p->forced_fourcc != sh_mobile_format_fourcc(var)) |
1310 | return -EINVAL; |
1311 | |
1312 | return 0; |
1313 | } |
1314 | |
1315 | static int sh_mobile_set_par(struct fb_info *info) |
1316 | { |
1317 | struct sh_mobile_lcdc_chan *ch = info->par; |
1318 | int ret; |
1319 | |
1320 | sh_mobile_lcdc_stop(ch->lcdc); |
1321 | |
1322 | ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var)); |
1323 | ch->colorspace = info->var.colorspace; |
1324 | |
1325 | ch->xres = info->var.xres; |
1326 | ch->xres_virtual = info->var.xres_virtual; |
1327 | ch->yres = info->var.yres; |
1328 | ch->yres_virtual = info->var.yres_virtual; |
1329 | |
1330 | if (ch->format->yuv) |
1331 | ch->pitch = info->var.xres; |
1332 | else |
1333 | ch->pitch = info->var.xres * ch->format->bpp / 8; |
1334 | |
1335 | ret = sh_mobile_lcdc_start(ch->lcdc); |
1336 | if (ret < 0) |
1337 | dev_err(info->dev, "%s: unable to restart LCDC\n", __func__); |
1338 | |
1339 | info->fix.line_length = ch->pitch; |
1340 | |
1341 | if (sh_mobile_format_is_fourcc(&info->var)) { |
1342 | info->fix.type = FB_TYPE_FOURCC; |
1343 | info->fix.visual = FB_VISUAL_FOURCC; |
1344 | } else { |
1345 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
1346 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
1347 | } |
1348 | |
1349 | return ret; |
1350 | } |
1351 | |
1352 | /* |
1353 | * Screen blanking. Behavior is as follows: |
1354 | * FB_BLANK_UNBLANK: screen unblanked, clocks enabled |
1355 | * FB_BLANK_NORMAL: screen blanked, clocks enabled |
1356 | * FB_BLANK_VSYNC, |
1357 | * FB_BLANK_HSYNC, |
1358 | * FB_BLANK_POWEROFF: screen blanked, clocks disabled |
1359 | */ |
1360 | static int sh_mobile_lcdc_blank(int blank, struct fb_info *info) |
1361 | { |
1362 | struct sh_mobile_lcdc_chan *ch = info->par; |
1363 | struct sh_mobile_lcdc_priv *p = ch->lcdc; |
1364 | |
1365 | /* blank the screen? */ |
1366 | if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) { |
1367 | struct fb_fillrect rect = { |
1368 | .width = ch->xres, |
1369 | .height = ch->yres, |
1370 | }; |
1371 | sh_mobile_lcdc_fillrect(info, &rect); |
1372 | } |
1373 | /* turn clocks on? */ |
1374 | if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) { |
1375 | sh_mobile_lcdc_clk_on(p); |
1376 | } |
1377 | /* turn clocks off? */ |
1378 | if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) { |
1379 | /* make sure the screen is updated with the black fill before |
1380 | * switching the clocks off. one vsync is not enough since |
1381 | * blanking may occur in the middle of a refresh. deferred io |
1382 | * mode will reenable the clocks and update the screen in time, |
1383 | * so it does not need this. */ |
1384 | if (!info->fbdefio) { |
1385 | sh_mobile_wait_for_vsync(ch); |
1386 | sh_mobile_wait_for_vsync(ch); |
1387 | } |
1388 | sh_mobile_lcdc_clk_off(p); |
1389 | } |
1390 | |
1391 | ch->blank_status = blank; |
1392 | return 0; |
1393 | } |
1394 | |
1395 | static struct fb_ops sh_mobile_lcdc_ops = { |
1396 | .owner = THIS_MODULE, |
1397 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
1398 | .fb_read = fb_sys_read, |
1399 | .fb_write = fb_sys_write, |
1400 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
1401 | .fb_copyarea = sh_mobile_lcdc_copyarea, |
1402 | .fb_imageblit = sh_mobile_lcdc_imageblit, |
1403 | .fb_blank = sh_mobile_lcdc_blank, |
1404 | .fb_pan_display = sh_mobile_fb_pan_display, |
1405 | .fb_ioctl = sh_mobile_ioctl, |
1406 | .fb_open = sh_mobile_open, |
1407 | .fb_release = sh_mobile_release, |
1408 | .fb_check_var = sh_mobile_check_var, |
1409 | .fb_set_par = sh_mobile_set_par, |
1410 | }; |
1411 | |
1412 | static void |
1413 | sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch) |
1414 | { |
1415 | if (ch->info && ch->info->dev) |
1416 | unregister_framebuffer(ch->info); |
1417 | } |
1418 | |
1419 | static int __devinit |
1420 | sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch) |
1421 | { |
1422 | struct fb_info *info = ch->info; |
1423 | int ret; |
1424 | |
1425 | if (info->fbdefio) { |
1426 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
1427 | ch->fb_size >> PAGE_SHIFT); |
1428 | if (!ch->sglist) { |
1429 | dev_err(ch->lcdc->dev, "cannot allocate sglist\n"); |
1430 | return -ENOMEM; |
1431 | } |
1432 | } |
1433 | |
1434 | info->bl_dev = ch->bl; |
1435 | |
1436 | ret = register_framebuffer(info); |
1437 | if (ret < 0) |
1438 | return ret; |
1439 | |
1440 | dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n", |
1441 | dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ? |
1442 | "mainlcd" : "sublcd", info->var.xres, info->var.yres, |
1443 | info->var.bits_per_pixel); |
1444 | |
1445 | /* deferred io mode: disable clock to save power */ |
1446 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
1447 | sh_mobile_lcdc_clk_off(ch->lcdc); |
1448 | |
1449 | return ret; |
1450 | } |
1451 | |
1452 | static void |
1453 | sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch) |
1454 | { |
1455 | struct fb_info *info = ch->info; |
1456 | |
1457 | if (!info || !info->device) |
1458 | return; |
1459 | |
1460 | if (ch->sglist) |
1461 | vfree(ch->sglist); |
1462 | |
1463 | fb_dealloc_cmap(&info->cmap); |
1464 | framebuffer_release(info); |
1465 | } |
1466 | |
1467 | static int __devinit |
1468 | sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch, |
1469 | const struct fb_videomode *mode, |
1470 | unsigned int num_modes) |
1471 | { |
1472 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
1473 | struct fb_var_screeninfo *var; |
1474 | struct fb_info *info; |
1475 | int ret; |
1476 | |
1477 | /* Allocate and initialize the frame buffer device. Create the modes |
1478 | * list and allocate the color map. |
1479 | */ |
1480 | info = framebuffer_alloc(0, priv->dev); |
1481 | if (info == NULL) { |
1482 | dev_err(priv->dev, "unable to allocate fb_info\n"); |
1483 | return -ENOMEM; |
1484 | } |
1485 | |
1486 | ch->info = info; |
1487 | |
1488 | info->flags = FBINFO_FLAG_DEFAULT; |
1489 | info->fbops = &sh_mobile_lcdc_ops; |
1490 | info->device = priv->dev; |
1491 | info->screen_base = ch->fb_mem; |
1492 | info->pseudo_palette = &ch->pseudo_palette; |
1493 | info->par = ch; |
1494 | |
1495 | fb_videomode_to_modelist(mode, num_modes, &info->modelist); |
1496 | |
1497 | ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); |
1498 | if (ret < 0) { |
1499 | dev_err(priv->dev, "unable to allocate cmap\n"); |
1500 | return ret; |
1501 | } |
1502 | |
1503 | /* Initialize fixed screen information. Restrict pan to 2 lines steps |
1504 | * for NV12 and NV21. |
1505 | */ |
1506 | info->fix = sh_mobile_lcdc_fix; |
1507 | info->fix.smem_start = ch->dma_handle; |
1508 | info->fix.smem_len = ch->fb_size; |
1509 | info->fix.line_length = ch->pitch; |
1510 | |
1511 | if (ch->format->yuv) |
1512 | info->fix.visual = FB_VISUAL_FOURCC; |
1513 | else |
1514 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
1515 | |
1516 | if (ch->format->fourcc == V4L2_PIX_FMT_NV12 || |
1517 | ch->format->fourcc == V4L2_PIX_FMT_NV21) |
1518 | info->fix.ypanstep = 2; |
1519 | |
1520 | /* Initialize variable screen information using the first mode as |
1521 | * default. The default Y virtual resolution is twice the panel size to |
1522 | * allow for double-buffering. |
1523 | */ |
1524 | var = &info->var; |
1525 | fb_videomode_to_var(var, mode); |
1526 | var->width = ch->cfg->panel_cfg.width; |
1527 | var->height = ch->cfg->panel_cfg.height; |
1528 | var->yres_virtual = var->yres * 2; |
1529 | var->activate = FB_ACTIVATE_NOW; |
1530 | |
1531 | /* Use the legacy API by default for RGB formats, and the FOURCC API |
1532 | * for YUV formats. |
1533 | */ |
1534 | if (!ch->format->yuv) |
1535 | var->bits_per_pixel = ch->format->bpp; |
1536 | else |
1537 | var->grayscale = ch->format->fourcc; |
1538 | |
1539 | ret = sh_mobile_check_var(var, info); |
1540 | if (ret) |
1541 | return ret; |
1542 | |
1543 | return 0; |
1544 | } |
1545 | |
1546 | /* ----------------------------------------------------------------------------- |
1547 | * Backlight |
1548 | */ |
1549 | |
1550 | static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev) |
1551 | { |
1552 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); |
1553 | int brightness = bdev->props.brightness; |
1554 | |
1555 | if (bdev->props.power != FB_BLANK_UNBLANK || |
1556 | bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) |
1557 | brightness = 0; |
1558 | |
1559 | return ch->cfg->bl_info.set_brightness(brightness); |
1560 | } |
1561 | |
1562 | static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev) |
1563 | { |
1564 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); |
1565 | |
1566 | return ch->cfg->bl_info.get_brightness(); |
1567 | } |
1568 | |
1569 | static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev, |
1570 | struct fb_info *info) |
1571 | { |
1572 | return (info->bl_dev == bdev); |
1573 | } |
1574 | |
1575 | static struct backlight_ops sh_mobile_lcdc_bl_ops = { |
1576 | .options = BL_CORE_SUSPENDRESUME, |
1577 | .update_status = sh_mobile_lcdc_update_bl, |
1578 | .get_brightness = sh_mobile_lcdc_get_brightness, |
1579 | .check_fb = sh_mobile_lcdc_check_fb, |
1580 | }; |
1581 | |
1582 | static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent, |
1583 | struct sh_mobile_lcdc_chan *ch) |
1584 | { |
1585 | struct backlight_device *bl; |
1586 | |
1587 | bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch, |
1588 | &sh_mobile_lcdc_bl_ops, NULL); |
1589 | if (IS_ERR(bl)) { |
1590 | dev_err(parent, "unable to register backlight device: %ld\n", |
1591 | PTR_ERR(bl)); |
1592 | return NULL; |
1593 | } |
1594 | |
1595 | bl->props.max_brightness = ch->cfg->bl_info.max_brightness; |
1596 | bl->props.brightness = bl->props.max_brightness; |
1597 | backlight_update_status(bl); |
1598 | |
1599 | return bl; |
1600 | } |
1601 | |
1602 | static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev) |
1603 | { |
1604 | backlight_device_unregister(bdev); |
1605 | } |
1606 | |
1607 | /* ----------------------------------------------------------------------------- |
1608 | * Power management |
1609 | */ |
1610 | |
1611 | static int sh_mobile_lcdc_suspend(struct device *dev) |
1612 | { |
1613 | struct platform_device *pdev = to_platform_device(dev); |
1614 | |
1615 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); |
1616 | return 0; |
1617 | } |
1618 | |
1619 | static int sh_mobile_lcdc_resume(struct device *dev) |
1620 | { |
1621 | struct platform_device *pdev = to_platform_device(dev); |
1622 | |
1623 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); |
1624 | } |
1625 | |
1626 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
1627 | { |
1628 | struct platform_device *pdev = to_platform_device(dev); |
1629 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
1630 | |
1631 | /* turn off LCDC hardware */ |
1632 | lcdc_write(priv, _LDCNT1R, 0); |
1633 | |
1634 | return 0; |
1635 | } |
1636 | |
1637 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) |
1638 | { |
1639 | struct platform_device *pdev = to_platform_device(dev); |
1640 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
1641 | |
1642 | __sh_mobile_lcdc_start(priv); |
1643 | |
1644 | return 0; |
1645 | } |
1646 | |
1647 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
1648 | .suspend = sh_mobile_lcdc_suspend, |
1649 | .resume = sh_mobile_lcdc_resume, |
1650 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
1651 | .runtime_resume = sh_mobile_lcdc_runtime_resume, |
1652 | }; |
1653 | |
1654 | /* ----------------------------------------------------------------------------- |
1655 | * Framebuffer notifier |
1656 | */ |
1657 | |
1658 | /* locking: called with info->lock held */ |
1659 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
1660 | unsigned long action, void *data) |
1661 | { |
1662 | struct fb_event *event = data; |
1663 | struct fb_info *info = event->info; |
1664 | struct sh_mobile_lcdc_chan *ch = info->par; |
1665 | |
1666 | if (&ch->lcdc->notifier != nb) |
1667 | return NOTIFY_DONE; |
1668 | |
1669 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", |
1670 | __func__, action, event->data); |
1671 | |
1672 | switch(action) { |
1673 | case FB_EVENT_SUSPEND: |
1674 | sh_mobile_lcdc_display_off(ch); |
1675 | sh_mobile_lcdc_stop(ch->lcdc); |
1676 | break; |
1677 | case FB_EVENT_RESUME: |
1678 | mutex_lock(&ch->open_lock); |
1679 | sh_mobile_fb_reconfig(info); |
1680 | mutex_unlock(&ch->open_lock); |
1681 | |
1682 | sh_mobile_lcdc_display_on(ch); |
1683 | sh_mobile_lcdc_start(ch->lcdc); |
1684 | } |
1685 | |
1686 | return NOTIFY_OK; |
1687 | } |
1688 | |
1689 | /* ----------------------------------------------------------------------------- |
1690 | * Probe/remove and driver init/exit |
1691 | */ |
1692 | |
1693 | static const struct fb_videomode default_720p __devinitconst = { |
1694 | .name = "HDMI 720p", |
1695 | .xres = 1280, |
1696 | .yres = 720, |
1697 | |
1698 | .left_margin = 220, |
1699 | .right_margin = 110, |
1700 | .hsync_len = 40, |
1701 | |
1702 | .upper_margin = 20, |
1703 | .lower_margin = 5, |
1704 | .vsync_len = 5, |
1705 | |
1706 | .pixclock = 13468, |
1707 | .refresh = 60, |
1708 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, |
1709 | }; |
1710 | |
1711 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) |
1712 | { |
1713 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
1714 | int i; |
1715 | |
1716 | fb_unregister_client(&priv->notifier); |
1717 | |
1718 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) |
1719 | sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]); |
1720 | |
1721 | sh_mobile_lcdc_stop(priv); |
1722 | |
1723 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { |
1724 | struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; |
1725 | |
1726 | if (ch->tx_dev) { |
1727 | ch->tx_dev->lcdc = NULL; |
1728 | module_put(ch->cfg->tx_dev->dev.driver->owner); |
1729 | } |
1730 | |
1731 | sh_mobile_lcdc_channel_fb_cleanup(ch); |
1732 | |
1733 | if (ch->fb_mem) |
1734 | dma_free_coherent(&pdev->dev, ch->fb_size, |
1735 | ch->fb_mem, ch->dma_handle); |
1736 | } |
1737 | |
1738 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { |
1739 | if (priv->ch[i].bl) |
1740 | sh_mobile_lcdc_bl_remove(priv->ch[i].bl); |
1741 | } |
1742 | |
1743 | if (priv->dot_clk) { |
1744 | pm_runtime_disable(&pdev->dev); |
1745 | clk_put(priv->dot_clk); |
1746 | } |
1747 | |
1748 | if (priv->base) |
1749 | iounmap(priv->base); |
1750 | |
1751 | if (priv->irq) |
1752 | free_irq(priv->irq, priv); |
1753 | kfree(priv); |
1754 | return 0; |
1755 | } |
1756 | |
1757 | static int __devinit sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) |
1758 | { |
1759 | int interface_type = ch->cfg->interface_type; |
1760 | |
1761 | switch (interface_type) { |
1762 | case RGB8: |
1763 | case RGB9: |
1764 | case RGB12A: |
1765 | case RGB12B: |
1766 | case RGB16: |
1767 | case RGB18: |
1768 | case RGB24: |
1769 | case SYS8A: |
1770 | case SYS8B: |
1771 | case SYS8C: |
1772 | case SYS8D: |
1773 | case SYS9: |
1774 | case SYS12: |
1775 | case SYS16A: |
1776 | case SYS16B: |
1777 | case SYS16C: |
1778 | case SYS18: |
1779 | case SYS24: |
1780 | break; |
1781 | default: |
1782 | return -EINVAL; |
1783 | } |
1784 | |
1785 | /* SUBLCD only supports SYS interface */ |
1786 | if (lcdc_chan_is_sublcd(ch)) { |
1787 | if (!(interface_type & LDMT1R_IFM)) |
1788 | return -EINVAL; |
1789 | |
1790 | interface_type &= ~LDMT1R_IFM; |
1791 | } |
1792 | |
1793 | ch->ldmt1r_value = interface_type; |
1794 | return 0; |
1795 | } |
1796 | |
1797 | static int __devinit |
1798 | sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_priv *priv, |
1799 | struct sh_mobile_lcdc_chan *ch) |
1800 | { |
1801 | const struct sh_mobile_lcdc_format_info *format; |
1802 | const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg; |
1803 | const struct fb_videomode *max_mode; |
1804 | const struct fb_videomode *mode; |
1805 | unsigned int num_modes; |
1806 | unsigned int max_size; |
1807 | unsigned int i; |
1808 | |
1809 | mutex_init(&ch->open_lock); |
1810 | ch->notify = sh_mobile_lcdc_display_notify; |
1811 | |
1812 | /* Validate the format. */ |
1813 | format = sh_mobile_format_info(cfg->fourcc); |
1814 | if (format == NULL) { |
1815 | dev_err(priv->dev, "Invalid FOURCC %08x.\n", cfg->fourcc); |
1816 | return -EINVAL; |
1817 | } |
1818 | |
1819 | /* Iterate through the modes to validate them and find the highest |
1820 | * resolution. |
1821 | */ |
1822 | max_mode = NULL; |
1823 | max_size = 0; |
1824 | |
1825 | for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) { |
1826 | unsigned int size = mode->yres * mode->xres; |
1827 | |
1828 | /* NV12/NV21 buffers must have even number of lines */ |
1829 | if ((cfg->fourcc == V4L2_PIX_FMT_NV12 || |
1830 | cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) { |
1831 | dev_err(priv->dev, "yres must be multiple of 2 for " |
1832 | "YCbCr420 mode.\n"); |
1833 | return -EINVAL; |
1834 | } |
1835 | |
1836 | if (size > max_size) { |
1837 | max_mode = mode; |
1838 | max_size = size; |
1839 | } |
1840 | } |
1841 | |
1842 | if (!max_size) |
1843 | max_size = MAX_XRES * MAX_YRES; |
1844 | else |
1845 | dev_dbg(priv->dev, "Found largest videomode %ux%u\n", |
1846 | max_mode->xres, max_mode->yres); |
1847 | |
1848 | if (cfg->lcd_modes == NULL) { |
1849 | mode = &default_720p; |
1850 | num_modes = 1; |
1851 | } else { |
1852 | mode = cfg->lcd_modes; |
1853 | num_modes = cfg->num_modes; |
1854 | } |
1855 | |
1856 | /* Use the first mode as default. */ |
1857 | ch->format = format; |
1858 | ch->xres = mode->xres; |
1859 | ch->xres_virtual = mode->xres; |
1860 | ch->yres = mode->yres; |
1861 | ch->yres_virtual = mode->yres * 2; |
1862 | |
1863 | if (!format->yuv) { |
1864 | ch->colorspace = V4L2_COLORSPACE_SRGB; |
1865 | ch->pitch = ch->xres * format->bpp / 8; |
1866 | } else { |
1867 | ch->colorspace = V4L2_COLORSPACE_REC709; |
1868 | ch->pitch = ch->xres; |
1869 | } |
1870 | |
1871 | ch->display.width = cfg->panel_cfg.width; |
1872 | ch->display.height = cfg->panel_cfg.height; |
1873 | ch->display.mode = *mode; |
1874 | |
1875 | /* Allocate frame buffer memory. */ |
1876 | ch->fb_size = max_size * format->bpp / 8 * 2; |
1877 | ch->fb_mem = dma_alloc_coherent(priv->dev, ch->fb_size, &ch->dma_handle, |
1878 | GFP_KERNEL); |
1879 | if (ch->fb_mem == NULL) { |
1880 | dev_err(priv->dev, "unable to allocate buffer\n"); |
1881 | return -ENOMEM; |
1882 | } |
1883 | |
1884 | /* Initialize the transmitter device if present. */ |
1885 | if (cfg->tx_dev) { |
1886 | if (!cfg->tx_dev->dev.driver || |
1887 | !try_module_get(cfg->tx_dev->dev.driver->owner)) { |
1888 | dev_warn(priv->dev, |
1889 | "unable to get transmitter device\n"); |
1890 | return -EINVAL; |
1891 | } |
1892 | ch->tx_dev = platform_get_drvdata(cfg->tx_dev); |
1893 | ch->tx_dev->lcdc = ch; |
1894 | ch->tx_dev->def_mode = *mode; |
1895 | } |
1896 | |
1897 | return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes); |
1898 | } |
1899 | |
1900 | static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) |
1901 | { |
1902 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
1903 | struct sh_mobile_lcdc_priv *priv; |
1904 | struct resource *res; |
1905 | int num_channels; |
1906 | int error; |
1907 | int i; |
1908 | |
1909 | if (!pdata) { |
1910 | dev_err(&pdev->dev, "no platform data defined\n"); |
1911 | return -EINVAL; |
1912 | } |
1913 | |
1914 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1915 | i = platform_get_irq(pdev, 0); |
1916 | if (!res || i < 0) { |
1917 | dev_err(&pdev->dev, "cannot get platform resources\n"); |
1918 | return -ENOENT; |
1919 | } |
1920 | |
1921 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
1922 | if (!priv) { |
1923 | dev_err(&pdev->dev, "cannot allocate device data\n"); |
1924 | return -ENOMEM; |
1925 | } |
1926 | |
1927 | priv->dev = &pdev->dev; |
1928 | priv->meram_dev = pdata->meram_dev; |
1929 | platform_set_drvdata(pdev, priv); |
1930 | |
1931 | error = request_irq(i, sh_mobile_lcdc_irq, 0, |
1932 | dev_name(&pdev->dev), priv); |
1933 | if (error) { |
1934 | dev_err(&pdev->dev, "unable to request irq\n"); |
1935 | goto err1; |
1936 | } |
1937 | |
1938 | priv->irq = i; |
1939 | atomic_set(&priv->hw_usecnt, -1); |
1940 | |
1941 | for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) { |
1942 | struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels; |
1943 | |
1944 | ch->lcdc = priv; |
1945 | ch->cfg = &pdata->ch[i]; |
1946 | |
1947 | error = sh_mobile_lcdc_check_interface(ch); |
1948 | if (error) { |
1949 | dev_err(&pdev->dev, "unsupported interface type\n"); |
1950 | goto err1; |
1951 | } |
1952 | init_waitqueue_head(&ch->frame_end_wait); |
1953 | init_completion(&ch->vsync_completion); |
1954 | ch->pan_offset = 0; |
1955 | |
1956 | /* probe the backlight is there is one defined */ |
1957 | if (ch->cfg->bl_info.max_brightness) |
1958 | ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch); |
1959 | |
1960 | switch (pdata->ch[i].chan) { |
1961 | case LCDC_CHAN_MAINLCD: |
1962 | ch->enabled = LDCNT2R_ME; |
1963 | ch->reg_offs = lcdc_offs_mainlcd; |
1964 | num_channels++; |
1965 | break; |
1966 | case LCDC_CHAN_SUBLCD: |
1967 | ch->enabled = LDCNT2R_SE; |
1968 | ch->reg_offs = lcdc_offs_sublcd; |
1969 | num_channels++; |
1970 | break; |
1971 | } |
1972 | } |
1973 | |
1974 | if (!num_channels) { |
1975 | dev_err(&pdev->dev, "no channels defined\n"); |
1976 | error = -EINVAL; |
1977 | goto err1; |
1978 | } |
1979 | |
1980 | /* for dual channel LCDC (MAIN + SUB) force shared format setting */ |
1981 | if (num_channels == 2) |
1982 | priv->forced_fourcc = pdata->ch[0].fourcc; |
1983 | |
1984 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
1985 | if (!priv->base) |
1986 | goto err1; |
1987 | |
1988 | error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source); |
1989 | if (error) { |
1990 | dev_err(&pdev->dev, "unable to setup clocks\n"); |
1991 | goto err1; |
1992 | } |
1993 | |
1994 | /* Enable runtime PM. */ |
1995 | pm_runtime_enable(&pdev->dev); |
1996 | |
1997 | for (i = 0; i < num_channels; i++) { |
1998 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
1999 | |
2000 | error = sh_mobile_lcdc_channel_init(priv, ch); |
2001 | if (error) |
2002 | goto err1; |
2003 | } |
2004 | |
2005 | error = sh_mobile_lcdc_start(priv); |
2006 | if (error) { |
2007 | dev_err(&pdev->dev, "unable to start hardware\n"); |
2008 | goto err1; |
2009 | } |
2010 | |
2011 | for (i = 0; i < num_channels; i++) { |
2012 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
2013 | |
2014 | error = sh_mobile_lcdc_channel_fb_register(ch); |
2015 | if (error) |
2016 | goto err1; |
2017 | } |
2018 | |
2019 | /* Failure ignored */ |
2020 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; |
2021 | fb_register_client(&priv->notifier); |
2022 | |
2023 | return 0; |
2024 | err1: |
2025 | sh_mobile_lcdc_remove(pdev); |
2026 | |
2027 | return error; |
2028 | } |
2029 | |
2030 | static struct platform_driver sh_mobile_lcdc_driver = { |
2031 | .driver = { |
2032 | .name = "sh_mobile_lcdc_fb", |
2033 | .owner = THIS_MODULE, |
2034 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
2035 | }, |
2036 | .probe = sh_mobile_lcdc_probe, |
2037 | .remove = sh_mobile_lcdc_remove, |
2038 | }; |
2039 | |
2040 | module_platform_driver(sh_mobile_lcdc_driver); |
2041 | |
2042 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); |
2043 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); |
2044 | MODULE_LICENSE("GPL v2"); |
2045 |
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