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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/ctype.h> |
16 | #include <linux/dma-mapping.h> |
17 | #include <linux/delay.h> |
18 | #include <linux/gpio.h> |
19 | #include <linux/init.h> |
20 | #include <linux/interrupt.h> |
21 | #include <linux/ioctl.h> |
22 | #include <linux/kernel.h> |
23 | #include <linux/mm.h> |
24 | #include <linux/module.h> |
25 | #include <linux/platform_device.h> |
26 | #include <linux/pm_runtime.h> |
27 | #include <linux/slab.h> |
28 | #include <linux/videodev2.h> |
29 | #include <linux/vmalloc.h> |
30 | |
31 | #include <video/sh_mobile_lcdc.h> |
32 | #include <video/sh_mobile_meram.h> |
33 | |
34 | #include "sh_mobile_lcdcfb.h" |
35 | |
36 | /* ---------------------------------------------------------------------------- |
37 | * Overlay register definitions |
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 | |
142 | enum sh_mobile_lcdc_overlay_mode { |
143 | LCDC_OVERLAY_BLEND, |
144 | LCDC_OVERLAY_ROP3, |
145 | }; |
146 | |
147 | /* |
148 | * struct sh_mobile_lcdc_overlay - LCDC display overlay |
149 | * |
150 | * @channel: LCDC channel this overlay belongs to |
151 | * @cfg: Overlay configuration |
152 | * @info: Frame buffer device |
153 | * @index: Overlay index (0-3) |
154 | * @base: Overlay registers base address |
155 | * @enabled: True if the overlay is enabled |
156 | * @mode: Overlay blending mode (alpha blend or ROP3) |
157 | * @alpha: Global alpha blending value (0-255, for alpha blending mode) |
158 | * @rop3: Raster operation (for ROP3 mode) |
159 | * @fb_mem: Frame buffer virtual memory address |
160 | * @fb_size: Frame buffer size in bytes |
161 | * @dma_handle: Frame buffer DMA address |
162 | * @base_addr_y: Overlay base address (RGB or luma component) |
163 | * @base_addr_c: Overlay base address (chroma component) |
164 | * @pan_y_offset: Panning linear offset in bytes (luma component) |
165 | * @format: Current pixelf format |
166 | * @xres: Horizontal visible resolution |
167 | * @xres_virtual: Horizontal total resolution |
168 | * @yres: Vertical visible resolution |
169 | * @yres_virtual: Vertical total resolution |
170 | * @pitch: Overlay line pitch |
171 | * @pos_x: Horizontal overlay position |
172 | * @pos_y: Vertical overlay position |
173 | */ |
174 | struct 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 | |
206 | struct 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 | struct notifier_block notifier; |
218 | int started; |
219 | int forced_fourcc; /* 2 channel LCDC must share fourcc setting */ |
220 | struct sh_mobile_meram_info *meram_dev; |
221 | }; |
222 | |
223 | /* ----------------------------------------------------------------------------- |
224 | * Registers access |
225 | */ |
226 | |
227 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
228 | [LDDCKPAT1R] = 0x400, |
229 | [LDDCKPAT2R] = 0x404, |
230 | [LDMT1R] = 0x418, |
231 | [LDMT2R] = 0x41c, |
232 | [LDMT3R] = 0x420, |
233 | [LDDFR] = 0x424, |
234 | [LDSM1R] = 0x428, |
235 | [LDSM2R] = 0x42c, |
236 | [LDSA1R] = 0x430, |
237 | [LDSA2R] = 0x434, |
238 | [LDMLSR] = 0x438, |
239 | [LDHCNR] = 0x448, |
240 | [LDHSYNR] = 0x44c, |
241 | [LDVLNR] = 0x450, |
242 | [LDVSYNR] = 0x454, |
243 | [LDPMR] = 0x460, |
244 | [LDHAJR] = 0x4a0, |
245 | }; |
246 | |
247 | static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { |
248 | [LDDCKPAT1R] = 0x408, |
249 | [LDDCKPAT2R] = 0x40c, |
250 | [LDMT1R] = 0x600, |
251 | [LDMT2R] = 0x604, |
252 | [LDMT3R] = 0x608, |
253 | [LDDFR] = 0x60c, |
254 | [LDSM1R] = 0x610, |
255 | [LDSM2R] = 0x614, |
256 | [LDSA1R] = 0x618, |
257 | [LDMLSR] = 0x620, |
258 | [LDHCNR] = 0x624, |
259 | [LDHSYNR] = 0x628, |
260 | [LDVLNR] = 0x62c, |
261 | [LDVSYNR] = 0x630, |
262 | [LDPMR] = 0x63c, |
263 | }; |
264 | |
265 | static bool banked(int reg_nr) |
266 | { |
267 | switch (reg_nr) { |
268 | case LDMT1R: |
269 | case LDMT2R: |
270 | case LDMT3R: |
271 | case LDDFR: |
272 | case LDSM1R: |
273 | case LDSA1R: |
274 | case LDSA2R: |
275 | case LDMLSR: |
276 | case LDHCNR: |
277 | case LDHSYNR: |
278 | case LDVLNR: |
279 | case LDVSYNR: |
280 | return true; |
281 | } |
282 | return false; |
283 | } |
284 | |
285 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) |
286 | { |
287 | return chan->cfg->chan == LCDC_CHAN_SUBLCD; |
288 | } |
289 | |
290 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
291 | int reg_nr, unsigned long data) |
292 | { |
293 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); |
294 | if (banked(reg_nr)) |
295 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + |
296 | SIDE_B_OFFSET); |
297 | } |
298 | |
299 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, |
300 | int reg_nr, unsigned long data) |
301 | { |
302 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + |
303 | MIRROR_OFFSET); |
304 | } |
305 | |
306 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, |
307 | int reg_nr) |
308 | { |
309 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); |
310 | } |
311 | |
312 | static void lcdc_write_overlay(struct sh_mobile_lcdc_overlay *ovl, |
313 | int reg, unsigned long data) |
314 | { |
315 | iowrite32(data, ovl->channel->lcdc->base + reg); |
316 | iowrite32(data, ovl->channel->lcdc->base + reg + SIDE_B_OFFSET); |
317 | } |
318 | |
319 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, |
320 | unsigned long reg_offs, unsigned long data) |
321 | { |
322 | iowrite32(data, priv->base + reg_offs); |
323 | } |
324 | |
325 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, |
326 | unsigned long reg_offs) |
327 | { |
328 | return ioread32(priv->base + reg_offs); |
329 | } |
330 | |
331 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, |
332 | unsigned long reg_offs, |
333 | unsigned long mask, unsigned long until) |
334 | { |
335 | while ((lcdc_read(priv, reg_offs) & mask) != until) |
336 | cpu_relax(); |
337 | } |
338 | |
339 | /* ----------------------------------------------------------------------------- |
340 | * Clock management |
341 | */ |
342 | |
343 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
344 | { |
345 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
346 | if (priv->dot_clk) |
347 | clk_enable(priv->dot_clk); |
348 | pm_runtime_get_sync(priv->dev); |
349 | if (priv->meram_dev && priv->meram_dev->pdev) |
350 | pm_runtime_get_sync(&priv->meram_dev->pdev->dev); |
351 | } |
352 | } |
353 | |
354 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) |
355 | { |
356 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
357 | if (priv->meram_dev && priv->meram_dev->pdev) |
358 | pm_runtime_put_sync(&priv->meram_dev->pdev->dev); |
359 | pm_runtime_put(priv->dev); |
360 | if (priv->dot_clk) |
361 | clk_disable(priv->dot_clk); |
362 | } |
363 | } |
364 | |
365 | static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv, |
366 | int clock_source) |
367 | { |
368 | struct clk *clk; |
369 | char *str; |
370 | |
371 | switch (clock_source) { |
372 | case LCDC_CLK_BUS: |
373 | str = "bus_clk"; |
374 | priv->lddckr = LDDCKR_ICKSEL_BUS; |
375 | break; |
376 | case LCDC_CLK_PERIPHERAL: |
377 | str = "peripheral_clk"; |
378 | priv->lddckr = LDDCKR_ICKSEL_MIPI; |
379 | break; |
380 | case LCDC_CLK_EXTERNAL: |
381 | str = NULL; |
382 | priv->lddckr = LDDCKR_ICKSEL_HDMI; |
383 | break; |
384 | default: |
385 | return -EINVAL; |
386 | } |
387 | |
388 | if (str == NULL) |
389 | return 0; |
390 | |
391 | clk = clk_get(priv->dev, str); |
392 | if (IS_ERR(clk)) { |
393 | dev_err(priv->dev, "cannot get dot clock %s\n", str); |
394 | return PTR_ERR(clk); |
395 | } |
396 | |
397 | priv->dot_clk = clk; |
398 | return 0; |
399 | } |
400 | |
401 | /* ----------------------------------------------------------------------------- |
402 | * Display, panel and deferred I/O |
403 | */ |
404 | |
405 | static void lcdc_sys_write_index(void *handle, unsigned long data) |
406 | { |
407 | struct sh_mobile_lcdc_chan *ch = handle; |
408 | |
409 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT); |
410 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
411 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | |
412 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); |
413 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
414 | } |
415 | |
416 | static void lcdc_sys_write_data(void *handle, unsigned long data) |
417 | { |
418 | struct sh_mobile_lcdc_chan *ch = handle; |
419 | |
420 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW); |
421 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
422 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | |
423 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); |
424 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
425 | } |
426 | |
427 | static unsigned long lcdc_sys_read_data(void *handle) |
428 | { |
429 | struct sh_mobile_lcdc_chan *ch = handle; |
430 | |
431 | lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR); |
432 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
433 | lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA | |
434 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); |
435 | udelay(1); |
436 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
437 | |
438 | return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK; |
439 | } |
440 | |
441 | static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { |
442 | lcdc_sys_write_index, |
443 | lcdc_sys_write_data, |
444 | lcdc_sys_read_data, |
445 | }; |
446 | |
447 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
448 | struct list_head *pagelist) |
449 | { |
450 | struct sh_mobile_lcdc_chan *ch = info->par; |
451 | unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT; |
452 | struct page *page; |
453 | int nr_pages = 0; |
454 | |
455 | sg_init_table(ch->sglist, nr_pages_max); |
456 | |
457 | list_for_each_entry(page, pagelist, lru) |
458 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); |
459 | |
460 | return nr_pages; |
461 | } |
462 | |
463 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
464 | struct list_head *pagelist) |
465 | { |
466 | struct sh_mobile_lcdc_chan *ch = info->par; |
467 | const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; |
468 | |
469 | /* enable clocks before accessing hardware */ |
470 | sh_mobile_lcdc_clk_on(ch->lcdc); |
471 | |
472 | /* |
473 | * It's possible to get here without anything on the pagelist via |
474 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() |
475 | * invocation. In the former case, the acceleration routines are |
476 | * stepped in to when using the framebuffer console causing the |
477 | * workqueue to be scheduled without any dirty pages on the list. |
478 | * |
479 | * Despite this, a panel update is still needed given that the |
480 | * acceleration routines have their own methods for writing in |
481 | * that still need to be updated. |
482 | * |
483 | * The fsync() and empty pagelist case could be optimized for, |
484 | * but we don't bother, as any application exhibiting such |
485 | * behaviour is fundamentally broken anyways. |
486 | */ |
487 | if (!list_empty(pagelist)) { |
488 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); |
489 | |
490 | /* trigger panel update */ |
491 | dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); |
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 | dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages, |
496 | DMA_TO_DEVICE); |
497 | } else { |
498 | if (panel->start_transfer) |
499 | panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops); |
500 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
501 | } |
502 | } |
503 | |
504 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) |
505 | { |
506 | struct fb_deferred_io *fbdefio = info->fbdefio; |
507 | |
508 | if (fbdefio) |
509 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); |
510 | } |
511 | |
512 | static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch) |
513 | { |
514 | const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; |
515 | |
516 | if (ch->tx_dev) { |
517 | int ret; |
518 | |
519 | ret = ch->tx_dev->ops->display_on(ch->tx_dev); |
520 | if (ret < 0) |
521 | return; |
522 | |
523 | if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED) |
524 | ch->info->state = FBINFO_STATE_SUSPENDED; |
525 | } |
526 | |
527 | /* HDMI must be enabled before LCDC configuration */ |
528 | if (panel->display_on) |
529 | panel->display_on(); |
530 | } |
531 | |
532 | static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch) |
533 | { |
534 | const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; |
535 | |
536 | if (panel->display_off) |
537 | panel->display_off(); |
538 | |
539 | if (ch->tx_dev) |
540 | ch->tx_dev->ops->display_off(ch->tx_dev); |
541 | } |
542 | |
543 | static bool |
544 | sh_mobile_lcdc_must_reconfigure(struct sh_mobile_lcdc_chan *ch, |
545 | const struct fb_videomode *new_mode) |
546 | { |
547 | dev_dbg(ch->info->dev, "Old %ux%u, new %ux%u\n", |
548 | ch->display.mode.xres, ch->display.mode.yres, |
549 | new_mode->xres, new_mode->yres); |
550 | |
551 | /* It can be a different monitor with an equal video-mode */ |
552 | if (fb_mode_is_equal(&ch->display.mode, new_mode)) |
553 | return false; |
554 | |
555 | dev_dbg(ch->info->dev, "Switching %u -> %u lines\n", |
556 | ch->display.mode.yres, new_mode->yres); |
557 | ch->display.mode = *new_mode; |
558 | |
559 | return true; |
560 | } |
561 | |
562 | static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var, |
563 | struct fb_info *info); |
564 | |
565 | static int sh_mobile_lcdc_display_notify(struct sh_mobile_lcdc_chan *ch, |
566 | enum sh_mobile_lcdc_entity_event event, |
567 | const struct fb_videomode *mode, |
568 | const struct fb_monspecs *monspec) |
569 | { |
570 | struct fb_info *info = ch->info; |
571 | struct fb_var_screeninfo var; |
572 | int ret = 0; |
573 | |
574 | switch (event) { |
575 | case SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT: |
576 | /* HDMI plug in */ |
577 | if (lock_fb_info(info)) { |
578 | console_lock(); |
579 | |
580 | ch->display.width = monspec->max_x * 10; |
581 | ch->display.height = monspec->max_y * 10; |
582 | |
583 | if (!sh_mobile_lcdc_must_reconfigure(ch, mode) && |
584 | info->state == FBINFO_STATE_RUNNING) { |
585 | /* First activation with the default monitor. |
586 | * Just turn on, if we run a resume here, the |
587 | * logo disappears. |
588 | */ |
589 | info->var.width = ch->display.width; |
590 | info->var.height = ch->display.height; |
591 | sh_mobile_lcdc_display_on(ch); |
592 | } else { |
593 | /* New monitor or have to wake up */ |
594 | fb_set_suspend(info, 0); |
595 | } |
596 | |
597 | console_unlock(); |
598 | unlock_fb_info(info); |
599 | } |
600 | break; |
601 | |
602 | case SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT: |
603 | /* HDMI disconnect */ |
604 | if (lock_fb_info(info)) { |
605 | console_lock(); |
606 | fb_set_suspend(info, 1); |
607 | console_unlock(); |
608 | unlock_fb_info(info); |
609 | } |
610 | break; |
611 | |
612 | case SH_MOBILE_LCDC_EVENT_DISPLAY_MODE: |
613 | /* Validate a proposed new mode */ |
614 | fb_videomode_to_var(&var, mode); |
615 | var.bits_per_pixel = info->var.bits_per_pixel; |
616 | var.grayscale = info->var.grayscale; |
617 | ret = sh_mobile_lcdc_check_var(&var, info); |
618 | break; |
619 | } |
620 | |
621 | return ret; |
622 | } |
623 | |
624 | /* ----------------------------------------------------------------------------- |
625 | * Format helpers |
626 | */ |
627 | |
628 | struct sh_mobile_lcdc_format_info { |
629 | u32 fourcc; |
630 | unsigned int bpp; |
631 | bool yuv; |
632 | u32 lddfr; |
633 | }; |
634 | |
635 | static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = { |
636 | { |
637 | .fourcc = V4L2_PIX_FMT_RGB565, |
638 | .bpp = 16, |
639 | .yuv = false, |
640 | .lddfr = LDDFR_PKF_RGB16, |
641 | }, { |
642 | .fourcc = V4L2_PIX_FMT_BGR24, |
643 | .bpp = 24, |
644 | .yuv = false, |
645 | .lddfr = LDDFR_PKF_RGB24, |
646 | }, { |
647 | .fourcc = V4L2_PIX_FMT_BGR32, |
648 | .bpp = 32, |
649 | .yuv = false, |
650 | .lddfr = LDDFR_PKF_ARGB32, |
651 | }, { |
652 | .fourcc = V4L2_PIX_FMT_NV12, |
653 | .bpp = 12, |
654 | .yuv = true, |
655 | .lddfr = LDDFR_CC | LDDFR_YF_420, |
656 | }, { |
657 | .fourcc = V4L2_PIX_FMT_NV21, |
658 | .bpp = 12, |
659 | .yuv = true, |
660 | .lddfr = LDDFR_CC | LDDFR_YF_420, |
661 | }, { |
662 | .fourcc = V4L2_PIX_FMT_NV16, |
663 | .bpp = 16, |
664 | .yuv = true, |
665 | .lddfr = LDDFR_CC | LDDFR_YF_422, |
666 | }, { |
667 | .fourcc = V4L2_PIX_FMT_NV61, |
668 | .bpp = 16, |
669 | .yuv = true, |
670 | .lddfr = LDDFR_CC | LDDFR_YF_422, |
671 | }, { |
672 | .fourcc = V4L2_PIX_FMT_NV24, |
673 | .bpp = 24, |
674 | .yuv = true, |
675 | .lddfr = LDDFR_CC | LDDFR_YF_444, |
676 | }, { |
677 | .fourcc = V4L2_PIX_FMT_NV42, |
678 | .bpp = 24, |
679 | .yuv = true, |
680 | .lddfr = LDDFR_CC | LDDFR_YF_444, |
681 | }, |
682 | }; |
683 | |
684 | static const struct sh_mobile_lcdc_format_info * |
685 | sh_mobile_format_info(u32 fourcc) |
686 | { |
687 | unsigned int i; |
688 | |
689 | for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) { |
690 | if (sh_mobile_format_infos[i].fourcc == fourcc) |
691 | return &sh_mobile_format_infos[i]; |
692 | } |
693 | |
694 | return NULL; |
695 | } |
696 | |
697 | static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var) |
698 | { |
699 | if (var->grayscale > 1) |
700 | return var->grayscale; |
701 | |
702 | switch (var->bits_per_pixel) { |
703 | case 16: |
704 | return V4L2_PIX_FMT_RGB565; |
705 | case 24: |
706 | return V4L2_PIX_FMT_BGR24; |
707 | case 32: |
708 | return V4L2_PIX_FMT_BGR32; |
709 | default: |
710 | return 0; |
711 | } |
712 | } |
713 | |
714 | static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var) |
715 | { |
716 | return var->grayscale > 1; |
717 | } |
718 | |
719 | /* ----------------------------------------------------------------------------- |
720 | * Start, stop and IRQ |
721 | */ |
722 | |
723 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) |
724 | { |
725 | struct sh_mobile_lcdc_priv *priv = data; |
726 | struct sh_mobile_lcdc_chan *ch; |
727 | unsigned long ldintr; |
728 | int is_sub; |
729 | int k; |
730 | |
731 | /* Acknowledge interrupts and disable further VSYNC End IRQs. */ |
732 | ldintr = lcdc_read(priv, _LDINTR); |
733 | lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE); |
734 | |
735 | /* figure out if this interrupt is for main or sub lcd */ |
736 | is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0; |
737 | |
738 | /* wake up channel and disable clocks */ |
739 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
740 | ch = &priv->ch[k]; |
741 | |
742 | if (!ch->enabled) |
743 | continue; |
744 | |
745 | /* Frame End */ |
746 | if (ldintr & LDINTR_FS) { |
747 | if (is_sub == lcdc_chan_is_sublcd(ch)) { |
748 | ch->frame_end = 1; |
749 | wake_up(&ch->frame_end_wait); |
750 | |
751 | sh_mobile_lcdc_clk_off(priv); |
752 | } |
753 | } |
754 | |
755 | /* VSYNC End */ |
756 | if (ldintr & LDINTR_VES) |
757 | complete(&ch->vsync_completion); |
758 | } |
759 | |
760 | return IRQ_HANDLED; |
761 | } |
762 | |
763 | static int sh_mobile_lcdc_wait_for_vsync(struct sh_mobile_lcdc_chan *ch) |
764 | { |
765 | unsigned long ldintr; |
766 | int ret; |
767 | |
768 | /* Enable VSync End interrupt and be careful not to acknowledge any |
769 | * pending interrupt. |
770 | */ |
771 | ldintr = lcdc_read(ch->lcdc, _LDINTR); |
772 | ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK; |
773 | lcdc_write(ch->lcdc, _LDINTR, ldintr); |
774 | |
775 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, |
776 | msecs_to_jiffies(100)); |
777 | if (!ret) |
778 | return -ETIMEDOUT; |
779 | |
780 | return 0; |
781 | } |
782 | |
783 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
784 | int start) |
785 | { |
786 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); |
787 | int k; |
788 | |
789 | /* start or stop the lcdc */ |
790 | if (start) |
791 | lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO); |
792 | else |
793 | lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO); |
794 | |
795 | /* wait until power is applied/stopped on all channels */ |
796 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) |
797 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) |
798 | while (1) { |
799 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) |
800 | & LDPMR_LPS; |
801 | if (start && tmp == LDPMR_LPS) |
802 | break; |
803 | if (!start && tmp == 0) |
804 | break; |
805 | cpu_relax(); |
806 | } |
807 | |
808 | if (!start) |
809 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ |
810 | } |
811 | |
812 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
813 | { |
814 | const struct fb_var_screeninfo *var = &ch->info->var; |
815 | const struct fb_videomode *mode = &ch->display.mode; |
816 | unsigned long h_total, hsync_pos, display_h_total; |
817 | u32 tmp; |
818 | |
819 | tmp = ch->ldmt1r_value; |
820 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL; |
821 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL; |
822 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0; |
823 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0; |
824 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0; |
825 | tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0; |
826 | tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0; |
827 | lcdc_write_chan(ch, LDMT1R, tmp); |
828 | |
829 | /* setup SYS bus */ |
830 | lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r); |
831 | lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r); |
832 | |
833 | /* horizontal configuration */ |
834 | h_total = mode->xres + mode->hsync_len + mode->left_margin |
835 | + mode->right_margin; |
836 | tmp = h_total / 8; /* HTCN */ |
837 | tmp |= (min(mode->xres, ch->xres) / 8) << 16; /* HDCN */ |
838 | lcdc_write_chan(ch, LDHCNR, tmp); |
839 | |
840 | hsync_pos = mode->xres + mode->right_margin; |
841 | tmp = hsync_pos / 8; /* HSYNP */ |
842 | tmp |= (mode->hsync_len / 8) << 16; /* HSYNW */ |
843 | lcdc_write_chan(ch, LDHSYNR, tmp); |
844 | |
845 | /* vertical configuration */ |
846 | tmp = mode->yres + mode->vsync_len + mode->upper_margin |
847 | + mode->lower_margin; /* VTLN */ |
848 | tmp |= min(mode->yres, ch->yres) << 16; /* VDLN */ |
849 | lcdc_write_chan(ch, LDVLNR, tmp); |
850 | |
851 | tmp = mode->yres + mode->lower_margin; /* VSYNP */ |
852 | tmp |= mode->vsync_len << 16; /* VSYNW */ |
853 | lcdc_write_chan(ch, LDVSYNR, tmp); |
854 | |
855 | /* Adjust horizontal synchronisation for HDMI */ |
856 | display_h_total = mode->xres + mode->hsync_len + mode->left_margin |
857 | + mode->right_margin; |
858 | tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16) |
859 | | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7); |
860 | lcdc_write_chan(ch, LDHAJR, tmp); |
861 | lcdc_write_chan_mirror(ch, LDHAJR, tmp); |
862 | } |
863 | |
864 | static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl) |
865 | { |
866 | u32 format = 0; |
867 | |
868 | if (!ovl->enabled) { |
869 | lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index)); |
870 | lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), 0); |
871 | lcdc_write(ovl->channel->lcdc, LDBCR, |
872 | LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index)); |
873 | return; |
874 | } |
875 | |
876 | ovl->base_addr_y = ovl->dma_handle; |
877 | ovl->base_addr_c = ovl->dma_handle |
878 | + ovl->xres_virtual * ovl->yres_virtual; |
879 | |
880 | switch (ovl->mode) { |
881 | case LCDC_OVERLAY_BLEND: |
882 | format = LDBBSIFR_EN | (ovl->alpha << LDBBSIFR_LAY_SHIFT); |
883 | break; |
884 | |
885 | case LCDC_OVERLAY_ROP3: |
886 | format = LDBBSIFR_EN | LDBBSIFR_BRSEL |
887 | | (ovl->rop3 << LDBBSIFR_ROP3_SHIFT); |
888 | break; |
889 | } |
890 | |
891 | switch (ovl->format->fourcc) { |
892 | case V4L2_PIX_FMT_RGB565: |
893 | case V4L2_PIX_FMT_NV21: |
894 | case V4L2_PIX_FMT_NV61: |
895 | case V4L2_PIX_FMT_NV42: |
896 | format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW; |
897 | break; |
898 | case V4L2_PIX_FMT_BGR24: |
899 | case V4L2_PIX_FMT_NV12: |
900 | case V4L2_PIX_FMT_NV16: |
901 | case V4L2_PIX_FMT_NV24: |
902 | format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB; |
903 | break; |
904 | case V4L2_PIX_FMT_BGR32: |
905 | default: |
906 | format |= LDBBSIFR_SWPL; |
907 | break; |
908 | } |
909 | |
910 | switch (ovl->format->fourcc) { |
911 | case V4L2_PIX_FMT_RGB565: |
912 | format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16; |
913 | break; |
914 | case V4L2_PIX_FMT_BGR24: |
915 | format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24; |
916 | break; |
917 | case V4L2_PIX_FMT_BGR32: |
918 | format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32; |
919 | break; |
920 | case V4L2_PIX_FMT_NV12: |
921 | case V4L2_PIX_FMT_NV21: |
922 | format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420; |
923 | break; |
924 | case V4L2_PIX_FMT_NV16: |
925 | case V4L2_PIX_FMT_NV61: |
926 | format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422; |
927 | break; |
928 | case V4L2_PIX_FMT_NV24: |
929 | case V4L2_PIX_FMT_NV42: |
930 | format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444; |
931 | break; |
932 | } |
933 | |
934 | lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index)); |
935 | |
936 | lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), format); |
937 | |
938 | lcdc_write_overlay(ovl, LDBnBSSZR(ovl->index), |
939 | (ovl->yres << LDBBSSZR_BVSS_SHIFT) | |
940 | (ovl->xres << LDBBSSZR_BHSS_SHIFT)); |
941 | lcdc_write_overlay(ovl, LDBnBLOCR(ovl->index), |
942 | (ovl->pos_y << LDBBLOCR_CVLC_SHIFT) | |
943 | (ovl->pos_x << LDBBLOCR_CHLC_SHIFT)); |
944 | lcdc_write_overlay(ovl, LDBnBSMWR(ovl->index), |
945 | ovl->pitch << LDBBSMWR_BSMW_SHIFT); |
946 | |
947 | lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y); |
948 | lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c); |
949 | |
950 | lcdc_write(ovl->channel->lcdc, LDBCR, |
951 | LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index)); |
952 | } |
953 | |
954 | /* |
955 | * __sh_mobile_lcdc_start - Configure and start the LCDC |
956 | * @priv: LCDC device |
957 | * |
958 | * Configure all enabled channels and start the LCDC device. All external |
959 | * devices (clocks, MERAM, panels, ...) are not touched by this function. |
960 | */ |
961 | static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
962 | { |
963 | struct sh_mobile_lcdc_chan *ch; |
964 | unsigned long tmp; |
965 | int k, m; |
966 | |
967 | /* Enable LCDC channels. Read data from external memory, avoid using the |
968 | * BEU for now. |
969 | */ |
970 | lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled); |
971 | |
972 | /* Stop the LCDC first and disable all interrupts. */ |
973 | sh_mobile_lcdc_start_stop(priv, 0); |
974 | lcdc_write(priv, _LDINTR, 0); |
975 | |
976 | /* Configure power supply, dot clocks and start them. */ |
977 | tmp = priv->lddckr; |
978 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
979 | ch = &priv->ch[k]; |
980 | if (!ch->enabled) |
981 | continue; |
982 | |
983 | /* Power supply */ |
984 | lcdc_write_chan(ch, LDPMR, 0); |
985 | |
986 | m = ch->cfg->clock_divider; |
987 | if (!m) |
988 | continue; |
989 | |
990 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider |
991 | * denominator. |
992 | */ |
993 | lcdc_write_chan(ch, LDDCKPAT1R, 0); |
994 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); |
995 | |
996 | if (m == 1) |
997 | m = LDDCKR_MOSEL; |
998 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); |
999 | } |
1000 | |
1001 | lcdc_write(priv, _LDDCKR, tmp); |
1002 | lcdc_write(priv, _LDDCKSTPR, 0); |
1003 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); |
1004 | |
1005 | /* Setup geometry, format, frame buffer memory and operation mode. */ |
1006 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
1007 | ch = &priv->ch[k]; |
1008 | if (!ch->enabled) |
1009 | continue; |
1010 | |
1011 | sh_mobile_lcdc_geometry(ch); |
1012 | |
1013 | tmp = ch->format->lddfr; |
1014 | |
1015 | if (ch->format->yuv) { |
1016 | switch (ch->colorspace) { |
1017 | case V4L2_COLORSPACE_REC709: |
1018 | tmp |= LDDFR_CF1; |
1019 | break; |
1020 | case V4L2_COLORSPACE_JPEG: |
1021 | tmp |= LDDFR_CF0; |
1022 | break; |
1023 | } |
1024 | } |
1025 | |
1026 | lcdc_write_chan(ch, LDDFR, tmp); |
1027 | lcdc_write_chan(ch, LDMLSR, ch->line_size); |
1028 | lcdc_write_chan(ch, LDSA1R, ch->base_addr_y); |
1029 | if (ch->format->yuv) |
1030 | lcdc_write_chan(ch, LDSA2R, ch->base_addr_c); |
1031 | |
1032 | /* When using deferred I/O mode, configure the LCDC for one-shot |
1033 | * operation and enable the frame end interrupt. Otherwise use |
1034 | * continuous read mode. |
1035 | */ |
1036 | if (ch->ldmt1r_value & LDMT1R_IFM && |
1037 | ch->cfg->sys_bus_cfg.deferred_io_msec) { |
1038 | lcdc_write_chan(ch, LDSM1R, LDSM1R_OS); |
1039 | lcdc_write(priv, _LDINTR, LDINTR_FE); |
1040 | } else { |
1041 | lcdc_write_chan(ch, LDSM1R, 0); |
1042 | } |
1043 | } |
1044 | |
1045 | /* Word and long word swap. */ |
1046 | switch (priv->ch[0].format->fourcc) { |
1047 | case V4L2_PIX_FMT_RGB565: |
1048 | case V4L2_PIX_FMT_NV21: |
1049 | case V4L2_PIX_FMT_NV61: |
1050 | case V4L2_PIX_FMT_NV42: |
1051 | tmp = LDDDSR_LS | LDDDSR_WS; |
1052 | break; |
1053 | case V4L2_PIX_FMT_BGR24: |
1054 | case V4L2_PIX_FMT_NV12: |
1055 | case V4L2_PIX_FMT_NV16: |
1056 | case V4L2_PIX_FMT_NV24: |
1057 | tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; |
1058 | break; |
1059 | case V4L2_PIX_FMT_BGR32: |
1060 | default: |
1061 | tmp = LDDDSR_LS; |
1062 | break; |
1063 | } |
1064 | lcdc_write(priv, _LDDDSR, tmp); |
1065 | |
1066 | /* Enable the display output. */ |
1067 | lcdc_write(priv, _LDCNT1R, LDCNT1R_DE); |
1068 | sh_mobile_lcdc_start_stop(priv, 1); |
1069 | priv->started = 1; |
1070 | } |
1071 | |
1072 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
1073 | { |
1074 | struct sh_mobile_meram_info *mdev = priv->meram_dev; |
1075 | struct sh_mobile_lcdc_chan *ch; |
1076 | unsigned long tmp; |
1077 | int ret; |
1078 | int k; |
1079 | |
1080 | /* enable clocks before accessing the hardware */ |
1081 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
1082 | if (priv->ch[k].enabled) |
1083 | sh_mobile_lcdc_clk_on(priv); |
1084 | } |
1085 | |
1086 | /* reset */ |
1087 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR); |
1088 | lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0); |
1089 | |
1090 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
1091 | const struct sh_mobile_lcdc_panel_cfg *panel; |
1092 | |
1093 | ch = &priv->ch[k]; |
1094 | if (!ch->enabled) |
1095 | continue; |
1096 | |
1097 | panel = &ch->cfg->panel_cfg; |
1098 | if (panel->setup_sys) { |
1099 | ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops); |
1100 | if (ret) |
1101 | return ret; |
1102 | } |
1103 | } |
1104 | |
1105 | /* Compute frame buffer base address and pitch for each channel. */ |
1106 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
1107 | int pixelformat; |
1108 | void *cache; |
1109 | |
1110 | ch = &priv->ch[k]; |
1111 | if (!ch->enabled) |
1112 | continue; |
1113 | |
1114 | ch->base_addr_y = ch->dma_handle; |
1115 | ch->base_addr_c = ch->dma_handle |
1116 | + ch->xres_virtual * ch->yres_virtual; |
1117 | ch->line_size = ch->pitch; |
1118 | |
1119 | /* Enable MERAM if possible. */ |
1120 | if (mdev == NULL || ch->cfg->meram_cfg == NULL) |
1121 | continue; |
1122 | |
1123 | /* Free the allocated MERAM cache. */ |
1124 | if (ch->cache) { |
1125 | sh_mobile_meram_cache_free(mdev, ch->cache); |
1126 | ch->cache = NULL; |
1127 | } |
1128 | |
1129 | switch (ch->format->fourcc) { |
1130 | case V4L2_PIX_FMT_NV12: |
1131 | case V4L2_PIX_FMT_NV21: |
1132 | case V4L2_PIX_FMT_NV16: |
1133 | case V4L2_PIX_FMT_NV61: |
1134 | pixelformat = SH_MOBILE_MERAM_PF_NV; |
1135 | break; |
1136 | case V4L2_PIX_FMT_NV24: |
1137 | case V4L2_PIX_FMT_NV42: |
1138 | pixelformat = SH_MOBILE_MERAM_PF_NV24; |
1139 | break; |
1140 | case V4L2_PIX_FMT_RGB565: |
1141 | case V4L2_PIX_FMT_BGR24: |
1142 | case V4L2_PIX_FMT_BGR32: |
1143 | default: |
1144 | pixelformat = SH_MOBILE_MERAM_PF_RGB; |
1145 | break; |
1146 | } |
1147 | |
1148 | cache = sh_mobile_meram_cache_alloc(mdev, ch->cfg->meram_cfg, |
1149 | ch->pitch, ch->yres, pixelformat, |
1150 | &ch->line_size); |
1151 | if (!IS_ERR(cache)) { |
1152 | sh_mobile_meram_cache_update(mdev, cache, |
1153 | ch->base_addr_y, ch->base_addr_c, |
1154 | &ch->base_addr_y, &ch->base_addr_c); |
1155 | ch->cache = cache; |
1156 | } |
1157 | } |
1158 | |
1159 | for (k = 0; k < ARRAY_SIZE(priv->overlays); ++k) { |
1160 | struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[k]; |
1161 | sh_mobile_lcdc_overlay_setup(ovl); |
1162 | } |
1163 | |
1164 | /* Start the LCDC. */ |
1165 | __sh_mobile_lcdc_start(priv); |
1166 | |
1167 | /* Setup deferred I/O, tell the board code to enable the panels, and |
1168 | * turn backlight on. |
1169 | */ |
1170 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
1171 | ch = &priv->ch[k]; |
1172 | if (!ch->enabled) |
1173 | continue; |
1174 | |
1175 | tmp = ch->cfg->sys_bus_cfg.deferred_io_msec; |
1176 | if (ch->ldmt1r_value & LDMT1R_IFM && tmp) { |
1177 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; |
1178 | ch->defio.delay = msecs_to_jiffies(tmp); |
1179 | ch->info->fbdefio = &ch->defio; |
1180 | fb_deferred_io_init(ch->info); |
1181 | } |
1182 | |
1183 | sh_mobile_lcdc_display_on(ch); |
1184 | |
1185 | if (ch->bl) { |
1186 | ch->bl->props.power = FB_BLANK_UNBLANK; |
1187 | backlight_update_status(ch->bl); |
1188 | } |
1189 | } |
1190 | |
1191 | return 0; |
1192 | } |
1193 | |
1194 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) |
1195 | { |
1196 | struct sh_mobile_lcdc_chan *ch; |
1197 | int k; |
1198 | |
1199 | /* clean up deferred io and ask board code to disable panel */ |
1200 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
1201 | ch = &priv->ch[k]; |
1202 | if (!ch->enabled) |
1203 | continue; |
1204 | |
1205 | /* deferred io mode: |
1206 | * flush frame, and wait for frame end interrupt |
1207 | * clean up deferred io and enable clock |
1208 | */ |
1209 | if (ch->info && ch->info->fbdefio) { |
1210 | ch->frame_end = 0; |
1211 | schedule_delayed_work(&ch->info->deferred_work, 0); |
1212 | wait_event(ch->frame_end_wait, ch->frame_end); |
1213 | fb_deferred_io_cleanup(ch->info); |
1214 | ch->info->fbdefio = NULL; |
1215 | sh_mobile_lcdc_clk_on(priv); |
1216 | } |
1217 | |
1218 | if (ch->bl) { |
1219 | ch->bl->props.power = FB_BLANK_POWERDOWN; |
1220 | backlight_update_status(ch->bl); |
1221 | } |
1222 | |
1223 | sh_mobile_lcdc_display_off(ch); |
1224 | |
1225 | /* Free the MERAM cache. */ |
1226 | if (ch->cache) { |
1227 | sh_mobile_meram_cache_free(priv->meram_dev, ch->cache); |
1228 | ch->cache = 0; |
1229 | } |
1230 | |
1231 | } |
1232 | |
1233 | /* stop the lcdc */ |
1234 | if (priv->started) { |
1235 | sh_mobile_lcdc_start_stop(priv, 0); |
1236 | priv->started = 0; |
1237 | } |
1238 | |
1239 | /* stop clocks */ |
1240 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) |
1241 | if (priv->ch[k].enabled) |
1242 | sh_mobile_lcdc_clk_off(priv); |
1243 | } |
1244 | |
1245 | static int __sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var, |
1246 | struct fb_info *info) |
1247 | { |
1248 | if (var->xres > MAX_XRES || var->yres > MAX_YRES) |
1249 | return -EINVAL; |
1250 | |
1251 | /* Make sure the virtual resolution is at least as big as the visible |
1252 | * resolution. |
1253 | */ |
1254 | if (var->xres_virtual < var->xres) |
1255 | var->xres_virtual = var->xres; |
1256 | if (var->yres_virtual < var->yres) |
1257 | var->yres_virtual = var->yres; |
1258 | |
1259 | if (sh_mobile_format_is_fourcc(var)) { |
1260 | const struct sh_mobile_lcdc_format_info *format; |
1261 | |
1262 | format = sh_mobile_format_info(var->grayscale); |
1263 | if (format == NULL) |
1264 | return -EINVAL; |
1265 | var->bits_per_pixel = format->bpp; |
1266 | |
1267 | /* Default to RGB and JPEG color-spaces for RGB and YUV formats |
1268 | * respectively. |
1269 | */ |
1270 | if (!format->yuv) |
1271 | var->colorspace = V4L2_COLORSPACE_SRGB; |
1272 | else if (var->colorspace != V4L2_COLORSPACE_REC709) |
1273 | var->colorspace = V4L2_COLORSPACE_JPEG; |
1274 | } else { |
1275 | if (var->bits_per_pixel <= 16) { /* RGB 565 */ |
1276 | var->bits_per_pixel = 16; |
1277 | var->red.offset = 11; |
1278 | var->red.length = 5; |
1279 | var->green.offset = 5; |
1280 | var->green.length = 6; |
1281 | var->blue.offset = 0; |
1282 | var->blue.length = 5; |
1283 | var->transp.offset = 0; |
1284 | var->transp.length = 0; |
1285 | } else if (var->bits_per_pixel <= 24) { /* RGB 888 */ |
1286 | var->bits_per_pixel = 24; |
1287 | var->red.offset = 16; |
1288 | var->red.length = 8; |
1289 | var->green.offset = 8; |
1290 | var->green.length = 8; |
1291 | var->blue.offset = 0; |
1292 | var->blue.length = 8; |
1293 | var->transp.offset = 0; |
1294 | var->transp.length = 0; |
1295 | } else if (var->bits_per_pixel <= 32) { /* RGBA 888 */ |
1296 | var->bits_per_pixel = 32; |
1297 | var->red.offset = 16; |
1298 | var->red.length = 8; |
1299 | var->green.offset = 8; |
1300 | var->green.length = 8; |
1301 | var->blue.offset = 0; |
1302 | var->blue.length = 8; |
1303 | var->transp.offset = 24; |
1304 | var->transp.length = 8; |
1305 | } else |
1306 | return -EINVAL; |
1307 | |
1308 | var->red.msb_right = 0; |
1309 | var->green.msb_right = 0; |
1310 | var->blue.msb_right = 0; |
1311 | var->transp.msb_right = 0; |
1312 | } |
1313 | |
1314 | /* Make sure we don't exceed our allocated memory. */ |
1315 | if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 > |
1316 | info->fix.smem_len) |
1317 | return -EINVAL; |
1318 | |
1319 | return 0; |
1320 | } |
1321 | |
1322 | /* ----------------------------------------------------------------------------- |
1323 | * Frame buffer operations - Overlays |
1324 | */ |
1325 | |
1326 | static ssize_t |
1327 | overlay_alpha_show(struct device *dev, struct device_attribute *attr, char *buf) |
1328 | { |
1329 | struct fb_info *info = dev_get_drvdata(dev); |
1330 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1331 | |
1332 | return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->alpha); |
1333 | } |
1334 | |
1335 | static ssize_t |
1336 | overlay_alpha_store(struct device *dev, struct device_attribute *attr, |
1337 | const char *buf, size_t count) |
1338 | { |
1339 | struct fb_info *info = dev_get_drvdata(dev); |
1340 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1341 | unsigned int alpha; |
1342 | char *endp; |
1343 | |
1344 | alpha = simple_strtoul(buf, &endp, 10); |
1345 | if (isspace(*endp)) |
1346 | endp++; |
1347 | |
1348 | if (endp - buf != count) |
1349 | return -EINVAL; |
1350 | |
1351 | if (alpha > 255) |
1352 | return -EINVAL; |
1353 | |
1354 | if (ovl->alpha != alpha) { |
1355 | ovl->alpha = alpha; |
1356 | |
1357 | if (ovl->mode == LCDC_OVERLAY_BLEND && ovl->enabled) |
1358 | sh_mobile_lcdc_overlay_setup(ovl); |
1359 | } |
1360 | |
1361 | return count; |
1362 | } |
1363 | |
1364 | static ssize_t |
1365 | overlay_mode_show(struct device *dev, struct device_attribute *attr, char *buf) |
1366 | { |
1367 | struct fb_info *info = dev_get_drvdata(dev); |
1368 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1369 | |
1370 | return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->mode); |
1371 | } |
1372 | |
1373 | static ssize_t |
1374 | overlay_mode_store(struct device *dev, struct device_attribute *attr, |
1375 | const char *buf, size_t count) |
1376 | { |
1377 | struct fb_info *info = dev_get_drvdata(dev); |
1378 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1379 | unsigned int mode; |
1380 | char *endp; |
1381 | |
1382 | mode = simple_strtoul(buf, &endp, 10); |
1383 | if (isspace(*endp)) |
1384 | endp++; |
1385 | |
1386 | if (endp - buf != count) |
1387 | return -EINVAL; |
1388 | |
1389 | if (mode != LCDC_OVERLAY_BLEND && mode != LCDC_OVERLAY_ROP3) |
1390 | return -EINVAL; |
1391 | |
1392 | if (ovl->mode != mode) { |
1393 | ovl->mode = mode; |
1394 | |
1395 | if (ovl->enabled) |
1396 | sh_mobile_lcdc_overlay_setup(ovl); |
1397 | } |
1398 | |
1399 | return count; |
1400 | } |
1401 | |
1402 | static ssize_t |
1403 | overlay_position_show(struct device *dev, struct device_attribute *attr, |
1404 | char *buf) |
1405 | { |
1406 | struct fb_info *info = dev_get_drvdata(dev); |
1407 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1408 | |
1409 | return scnprintf(buf, PAGE_SIZE, "%d,%d\n", ovl->pos_x, ovl->pos_y); |
1410 | } |
1411 | |
1412 | static ssize_t |
1413 | overlay_position_store(struct device *dev, struct device_attribute *attr, |
1414 | const char *buf, size_t count) |
1415 | { |
1416 | struct fb_info *info = dev_get_drvdata(dev); |
1417 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1418 | char *endp; |
1419 | int pos_x; |
1420 | int pos_y; |
1421 | |
1422 | pos_x = simple_strtol(buf, &endp, 10); |
1423 | if (*endp != ',') |
1424 | return -EINVAL; |
1425 | |
1426 | pos_y = simple_strtol(endp + 1, &endp, 10); |
1427 | if (isspace(*endp)) |
1428 | endp++; |
1429 | |
1430 | if (endp - buf != count) |
1431 | return -EINVAL; |
1432 | |
1433 | if (ovl->pos_x != pos_x || ovl->pos_y != pos_y) { |
1434 | ovl->pos_x = pos_x; |
1435 | ovl->pos_y = pos_y; |
1436 | |
1437 | if (ovl->enabled) |
1438 | sh_mobile_lcdc_overlay_setup(ovl); |
1439 | } |
1440 | |
1441 | return count; |
1442 | } |
1443 | |
1444 | static ssize_t |
1445 | overlay_rop3_show(struct device *dev, struct device_attribute *attr, char *buf) |
1446 | { |
1447 | struct fb_info *info = dev_get_drvdata(dev); |
1448 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1449 | |
1450 | return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->rop3); |
1451 | } |
1452 | |
1453 | static ssize_t |
1454 | overlay_rop3_store(struct device *dev, struct device_attribute *attr, |
1455 | const char *buf, size_t count) |
1456 | { |
1457 | struct fb_info *info = dev_get_drvdata(dev); |
1458 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1459 | unsigned int rop3; |
1460 | char *endp; |
1461 | |
1462 | rop3 = !!simple_strtoul(buf, &endp, 10); |
1463 | if (isspace(*endp)) |
1464 | endp++; |
1465 | |
1466 | if (endp - buf != count) |
1467 | return -EINVAL; |
1468 | |
1469 | if (rop3 > 255) |
1470 | return -EINVAL; |
1471 | |
1472 | if (ovl->rop3 != rop3) { |
1473 | ovl->rop3 = rop3; |
1474 | |
1475 | if (ovl->mode == LCDC_OVERLAY_ROP3 && ovl->enabled) |
1476 | sh_mobile_lcdc_overlay_setup(ovl); |
1477 | } |
1478 | |
1479 | return count; |
1480 | } |
1481 | |
1482 | static const struct device_attribute overlay_sysfs_attrs[] = { |
1483 | __ATTR(ovl_alpha, S_IRUGO|S_IWUSR, |
1484 | overlay_alpha_show, overlay_alpha_store), |
1485 | __ATTR(ovl_mode, S_IRUGO|S_IWUSR, |
1486 | overlay_mode_show, overlay_mode_store), |
1487 | __ATTR(ovl_position, S_IRUGO|S_IWUSR, |
1488 | overlay_position_show, overlay_position_store), |
1489 | __ATTR(ovl_rop3, S_IRUGO|S_IWUSR, |
1490 | overlay_rop3_show, overlay_rop3_store), |
1491 | }; |
1492 | |
1493 | static const struct fb_fix_screeninfo sh_mobile_lcdc_overlay_fix = { |
1494 | .id = "SH Mobile LCDC", |
1495 | .type = FB_TYPE_PACKED_PIXELS, |
1496 | .visual = FB_VISUAL_TRUECOLOR, |
1497 | .accel = FB_ACCEL_NONE, |
1498 | .xpanstep = 1, |
1499 | .ypanstep = 1, |
1500 | .ywrapstep = 0, |
1501 | .capabilities = FB_CAP_FOURCC, |
1502 | }; |
1503 | |
1504 | static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var, |
1505 | struct fb_info *info) |
1506 | { |
1507 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1508 | unsigned long base_addr_y; |
1509 | unsigned long base_addr_c; |
1510 | unsigned long y_offset; |
1511 | unsigned long c_offset; |
1512 | |
1513 | if (!ovl->format->yuv) { |
1514 | y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset) |
1515 | * ovl->format->bpp / 8; |
1516 | c_offset = 0; |
1517 | } else { |
1518 | unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1; |
1519 | unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1; |
1520 | |
1521 | y_offset = var->yoffset * ovl->xres_virtual + var->xoffset; |
1522 | c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub |
1523 | + var->xoffset * 2 / xsub; |
1524 | } |
1525 | |
1526 | /* If the Y offset hasn't changed, the C offset hasn't either. There's |
1527 | * nothing to do in that case. |
1528 | */ |
1529 | if (y_offset == ovl->pan_y_offset) |
1530 | return 0; |
1531 | |
1532 | /* Set the source address for the next refresh */ |
1533 | base_addr_y = ovl->dma_handle + y_offset; |
1534 | base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual |
1535 | + c_offset; |
1536 | |
1537 | ovl->base_addr_y = base_addr_y; |
1538 | ovl->base_addr_c = base_addr_c; |
1539 | ovl->pan_y_offset = y_offset; |
1540 | |
1541 | lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index)); |
1542 | |
1543 | lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y); |
1544 | lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c); |
1545 | |
1546 | lcdc_write(ovl->channel->lcdc, LDBCR, |
1547 | LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index)); |
1548 | |
1549 | return 0; |
1550 | } |
1551 | |
1552 | static int sh_mobile_lcdc_overlay_ioctl(struct fb_info *info, unsigned int cmd, |
1553 | unsigned long arg) |
1554 | { |
1555 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1556 | |
1557 | switch (cmd) { |
1558 | case FBIO_WAITFORVSYNC: |
1559 | return sh_mobile_lcdc_wait_for_vsync(ovl->channel); |
1560 | |
1561 | default: |
1562 | return -ENOIOCTLCMD; |
1563 | } |
1564 | } |
1565 | |
1566 | static int sh_mobile_lcdc_overlay_check_var(struct fb_var_screeninfo *var, |
1567 | struct fb_info *info) |
1568 | { |
1569 | return __sh_mobile_lcdc_check_var(var, info); |
1570 | } |
1571 | |
1572 | static int sh_mobile_lcdc_overlay_set_par(struct fb_info *info) |
1573 | { |
1574 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1575 | |
1576 | ovl->format = |
1577 | sh_mobile_format_info(sh_mobile_format_fourcc(&info->var)); |
1578 | |
1579 | ovl->xres = info->var.xres; |
1580 | ovl->xres_virtual = info->var.xres_virtual; |
1581 | ovl->yres = info->var.yres; |
1582 | ovl->yres_virtual = info->var.yres_virtual; |
1583 | |
1584 | if (ovl->format->yuv) |
1585 | ovl->pitch = info->var.xres_virtual; |
1586 | else |
1587 | ovl->pitch = info->var.xres_virtual * ovl->format->bpp / 8; |
1588 | |
1589 | sh_mobile_lcdc_overlay_setup(ovl); |
1590 | |
1591 | info->fix.line_length = ovl->pitch; |
1592 | |
1593 | if (sh_mobile_format_is_fourcc(&info->var)) { |
1594 | info->fix.type = FB_TYPE_FOURCC; |
1595 | info->fix.visual = FB_VISUAL_FOURCC; |
1596 | } else { |
1597 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
1598 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
1599 | } |
1600 | |
1601 | return 0; |
1602 | } |
1603 | |
1604 | /* Overlay blanking. Disable the overlay when blanked. */ |
1605 | static int sh_mobile_lcdc_overlay_blank(int blank, struct fb_info *info) |
1606 | { |
1607 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1608 | |
1609 | ovl->enabled = !blank; |
1610 | sh_mobile_lcdc_overlay_setup(ovl); |
1611 | |
1612 | /* Prevent the backlight from receiving a blanking event by returning |
1613 | * a non-zero value. |
1614 | */ |
1615 | return 1; |
1616 | } |
1617 | |
1618 | static int |
1619 | sh_mobile_lcdc_overlay_mmap(struct fb_info *info, struct vm_area_struct *vma) |
1620 | { |
1621 | struct sh_mobile_lcdc_overlay *ovl = info->par; |
1622 | |
1623 | return dma_mmap_coherent(ovl->channel->lcdc->dev, vma, ovl->fb_mem, |
1624 | ovl->dma_handle, ovl->fb_size); |
1625 | } |
1626 | |
1627 | static struct fb_ops sh_mobile_lcdc_overlay_ops = { |
1628 | .owner = THIS_MODULE, |
1629 | .fb_read = fb_sys_read, |
1630 | .fb_write = fb_sys_write, |
1631 | .fb_fillrect = sys_fillrect, |
1632 | .fb_copyarea = sys_copyarea, |
1633 | .fb_imageblit = sys_imageblit, |
1634 | .fb_blank = sh_mobile_lcdc_overlay_blank, |
1635 | .fb_pan_display = sh_mobile_lcdc_overlay_pan, |
1636 | .fb_ioctl = sh_mobile_lcdc_overlay_ioctl, |
1637 | .fb_check_var = sh_mobile_lcdc_overlay_check_var, |
1638 | .fb_set_par = sh_mobile_lcdc_overlay_set_par, |
1639 | .fb_mmap = sh_mobile_lcdc_overlay_mmap, |
1640 | }; |
1641 | |
1642 | static void |
1643 | sh_mobile_lcdc_overlay_fb_unregister(struct sh_mobile_lcdc_overlay *ovl) |
1644 | { |
1645 | struct fb_info *info = ovl->info; |
1646 | |
1647 | if (info == NULL || info->dev == NULL) |
1648 | return; |
1649 | |
1650 | unregister_framebuffer(ovl->info); |
1651 | } |
1652 | |
1653 | static int |
1654 | sh_mobile_lcdc_overlay_fb_register(struct sh_mobile_lcdc_overlay *ovl) |
1655 | { |
1656 | struct sh_mobile_lcdc_priv *lcdc = ovl->channel->lcdc; |
1657 | struct fb_info *info = ovl->info; |
1658 | unsigned int i; |
1659 | int ret; |
1660 | |
1661 | if (info == NULL) |
1662 | return 0; |
1663 | |
1664 | ret = register_framebuffer(info); |
1665 | if (ret < 0) |
1666 | return ret; |
1667 | |
1668 | dev_info(lcdc->dev, "registered %s/overlay %u as %dx%d %dbpp.\n", |
1669 | dev_name(lcdc->dev), ovl->index, info->var.xres, |
1670 | info->var.yres, info->var.bits_per_pixel); |
1671 | |
1672 | for (i = 0; i < ARRAY_SIZE(overlay_sysfs_attrs); ++i) { |
1673 | ret = device_create_file(info->dev, &overlay_sysfs_attrs[i]); |
1674 | if (ret < 0) |
1675 | return ret; |
1676 | } |
1677 | |
1678 | return 0; |
1679 | } |
1680 | |
1681 | static void |
1682 | sh_mobile_lcdc_overlay_fb_cleanup(struct sh_mobile_lcdc_overlay *ovl) |
1683 | { |
1684 | struct fb_info *info = ovl->info; |
1685 | |
1686 | if (info == NULL || info->device == NULL) |
1687 | return; |
1688 | |
1689 | framebuffer_release(info); |
1690 | } |
1691 | |
1692 | static int |
1693 | sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl) |
1694 | { |
1695 | struct sh_mobile_lcdc_priv *priv = ovl->channel->lcdc; |
1696 | struct fb_var_screeninfo *var; |
1697 | struct fb_info *info; |
1698 | |
1699 | /* Allocate and initialize the frame buffer device. */ |
1700 | info = framebuffer_alloc(0, priv->dev); |
1701 | if (info == NULL) { |
1702 | dev_err(priv->dev, "unable to allocate fb_info\n"); |
1703 | return -ENOMEM; |
1704 | } |
1705 | |
1706 | ovl->info = info; |
1707 | |
1708 | info->flags = FBINFO_FLAG_DEFAULT; |
1709 | info->fbops = &sh_mobile_lcdc_overlay_ops; |
1710 | info->device = priv->dev; |
1711 | info->screen_base = ovl->fb_mem; |
1712 | info->par = ovl; |
1713 | |
1714 | /* Initialize fixed screen information. Restrict pan to 2 lines steps |
1715 | * for NV12 and NV21. |
1716 | */ |
1717 | info->fix = sh_mobile_lcdc_overlay_fix; |
1718 | snprintf(info->fix.id, sizeof(info->fix.id), |
1719 | "SH Mobile LCDC Overlay %u", ovl->index); |
1720 | info->fix.smem_start = ovl->dma_handle; |
1721 | info->fix.smem_len = ovl->fb_size; |
1722 | info->fix.line_length = ovl->pitch; |
1723 | |
1724 | if (ovl->format->yuv) |
1725 | info->fix.visual = FB_VISUAL_FOURCC; |
1726 | else |
1727 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
1728 | |
1729 | switch (ovl->format->fourcc) { |
1730 | case V4L2_PIX_FMT_NV12: |
1731 | case V4L2_PIX_FMT_NV21: |
1732 | info->fix.ypanstep = 2; |
1733 | case V4L2_PIX_FMT_NV16: |
1734 | case V4L2_PIX_FMT_NV61: |
1735 | info->fix.xpanstep = 2; |
1736 | } |
1737 | |
1738 | /* Initialize variable screen information. */ |
1739 | var = &info->var; |
1740 | memset(var, 0, sizeof(*var)); |
1741 | var->xres = ovl->xres; |
1742 | var->yres = ovl->yres; |
1743 | var->xres_virtual = ovl->xres_virtual; |
1744 | var->yres_virtual = ovl->yres_virtual; |
1745 | var->activate = FB_ACTIVATE_NOW; |
1746 | |
1747 | /* Use the legacy API by default for RGB formats, and the FOURCC API |
1748 | * for YUV formats. |
1749 | */ |
1750 | if (!ovl->format->yuv) |
1751 | var->bits_per_pixel = ovl->format->bpp; |
1752 | else |
1753 | var->grayscale = ovl->format->fourcc; |
1754 | |
1755 | return sh_mobile_lcdc_overlay_check_var(var, info); |
1756 | } |
1757 | |
1758 | /* ----------------------------------------------------------------------------- |
1759 | * Frame buffer operations - main frame buffer |
1760 | */ |
1761 | |
1762 | static int sh_mobile_lcdc_setcolreg(u_int regno, |
1763 | u_int red, u_int green, u_int blue, |
1764 | u_int transp, struct fb_info *info) |
1765 | { |
1766 | u32 *palette = info->pseudo_palette; |
1767 | |
1768 | if (regno >= PALETTE_NR) |
1769 | return -EINVAL; |
1770 | |
1771 | /* only FB_VISUAL_TRUECOLOR supported */ |
1772 | |
1773 | red >>= 16 - info->var.red.length; |
1774 | green >>= 16 - info->var.green.length; |
1775 | blue >>= 16 - info->var.blue.length; |
1776 | transp >>= 16 - info->var.transp.length; |
1777 | |
1778 | palette[regno] = (red << info->var.red.offset) | |
1779 | (green << info->var.green.offset) | |
1780 | (blue << info->var.blue.offset) | |
1781 | (transp << info->var.transp.offset); |
1782 | |
1783 | return 0; |
1784 | } |
1785 | |
1786 | static const struct fb_fix_screeninfo sh_mobile_lcdc_fix = { |
1787 | .id = "SH Mobile LCDC", |
1788 | .type = FB_TYPE_PACKED_PIXELS, |
1789 | .visual = FB_VISUAL_TRUECOLOR, |
1790 | .accel = FB_ACCEL_NONE, |
1791 | .xpanstep = 1, |
1792 | .ypanstep = 1, |
1793 | .ywrapstep = 0, |
1794 | .capabilities = FB_CAP_FOURCC, |
1795 | }; |
1796 | |
1797 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
1798 | const struct fb_fillrect *rect) |
1799 | { |
1800 | sys_fillrect(info, rect); |
1801 | sh_mobile_lcdc_deferred_io_touch(info); |
1802 | } |
1803 | |
1804 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, |
1805 | const struct fb_copyarea *area) |
1806 | { |
1807 | sys_copyarea(info, area); |
1808 | sh_mobile_lcdc_deferred_io_touch(info); |
1809 | } |
1810 | |
1811 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, |
1812 | const struct fb_image *image) |
1813 | { |
1814 | sys_imageblit(info, image); |
1815 | sh_mobile_lcdc_deferred_io_touch(info); |
1816 | } |
1817 | |
1818 | static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var, |
1819 | struct fb_info *info) |
1820 | { |
1821 | struct sh_mobile_lcdc_chan *ch = info->par; |
1822 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
1823 | unsigned long ldrcntr; |
1824 | unsigned long base_addr_y, base_addr_c; |
1825 | unsigned long y_offset; |
1826 | unsigned long c_offset; |
1827 | |
1828 | if (!ch->format->yuv) { |
1829 | y_offset = (var->yoffset * ch->xres_virtual + var->xoffset) |
1830 | * ch->format->bpp / 8; |
1831 | c_offset = 0; |
1832 | } else { |
1833 | unsigned int xsub = ch->format->bpp < 24 ? 2 : 1; |
1834 | unsigned int ysub = ch->format->bpp < 16 ? 2 : 1; |
1835 | |
1836 | y_offset = var->yoffset * ch->xres_virtual + var->xoffset; |
1837 | c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub |
1838 | + var->xoffset * 2 / xsub; |
1839 | } |
1840 | |
1841 | /* If the Y offset hasn't changed, the C offset hasn't either. There's |
1842 | * nothing to do in that case. |
1843 | */ |
1844 | if (y_offset == ch->pan_y_offset) |
1845 | return 0; |
1846 | |
1847 | /* Set the source address for the next refresh */ |
1848 | base_addr_y = ch->dma_handle + y_offset; |
1849 | base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual |
1850 | + c_offset; |
1851 | |
1852 | if (ch->cache) |
1853 | sh_mobile_meram_cache_update(priv->meram_dev, ch->cache, |
1854 | base_addr_y, base_addr_c, |
1855 | &base_addr_y, &base_addr_c); |
1856 | |
1857 | ch->base_addr_y = base_addr_y; |
1858 | ch->base_addr_c = base_addr_c; |
1859 | ch->pan_y_offset = y_offset; |
1860 | |
1861 | lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); |
1862 | if (ch->format->yuv) |
1863 | lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); |
1864 | |
1865 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
1866 | if (lcdc_chan_is_sublcd(ch)) |
1867 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); |
1868 | else |
1869 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); |
1870 | |
1871 | |
1872 | sh_mobile_lcdc_deferred_io_touch(info); |
1873 | |
1874 | return 0; |
1875 | } |
1876 | |
1877 | static int sh_mobile_lcdc_ioctl(struct fb_info *info, unsigned int cmd, |
1878 | unsigned long arg) |
1879 | { |
1880 | struct sh_mobile_lcdc_chan *ch = info->par; |
1881 | int retval; |
1882 | |
1883 | switch (cmd) { |
1884 | case FBIO_WAITFORVSYNC: |
1885 | retval = sh_mobile_lcdc_wait_for_vsync(ch); |
1886 | break; |
1887 | |
1888 | default: |
1889 | retval = -ENOIOCTLCMD; |
1890 | break; |
1891 | } |
1892 | return retval; |
1893 | } |
1894 | |
1895 | static void sh_mobile_fb_reconfig(struct fb_info *info) |
1896 | { |
1897 | struct sh_mobile_lcdc_chan *ch = info->par; |
1898 | struct fb_var_screeninfo var; |
1899 | struct fb_videomode mode; |
1900 | struct fb_event event; |
1901 | int evnt = FB_EVENT_MODE_CHANGE_ALL; |
1902 | |
1903 | if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) |
1904 | /* More framebuffer users are active */ |
1905 | return; |
1906 | |
1907 | fb_var_to_videomode(&mode, &info->var); |
1908 | |
1909 | if (fb_mode_is_equal(&ch->display.mode, &mode)) |
1910 | return; |
1911 | |
1912 | /* Display has been re-plugged, framebuffer is free now, reconfigure */ |
1913 | var = info->var; |
1914 | fb_videomode_to_var(&var, &ch->display.mode); |
1915 | var.width = ch->display.width; |
1916 | var.height = ch->display.height; |
1917 | var.activate = FB_ACTIVATE_NOW; |
1918 | |
1919 | if (fb_set_var(info, &var) < 0) |
1920 | /* Couldn't reconfigure, hopefully, can continue as before */ |
1921 | return; |
1922 | |
1923 | /* |
1924 | * fb_set_var() calls the notifier change internally, only if |
1925 | * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a |
1926 | * user event, we have to call the chain ourselves. |
1927 | */ |
1928 | event.info = info; |
1929 | event.data = &ch->display.mode; |
1930 | fb_notifier_call_chain(evnt, &event); |
1931 | } |
1932 | |
1933 | /* |
1934 | * Locking: both .fb_release() and .fb_open() are called with info->lock held if |
1935 | * user == 1, or with console sem held, if user == 0. |
1936 | */ |
1937 | static int sh_mobile_lcdc_release(struct fb_info *info, int user) |
1938 | { |
1939 | struct sh_mobile_lcdc_chan *ch = info->par; |
1940 | |
1941 | mutex_lock(&ch->open_lock); |
1942 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); |
1943 | |
1944 | ch->use_count--; |
1945 | |
1946 | /* Nothing to reconfigure, when called from fbcon */ |
1947 | if (user) { |
1948 | console_lock(); |
1949 | sh_mobile_fb_reconfig(info); |
1950 | console_unlock(); |
1951 | } |
1952 | |
1953 | mutex_unlock(&ch->open_lock); |
1954 | |
1955 | return 0; |
1956 | } |
1957 | |
1958 | static int sh_mobile_lcdc_open(struct fb_info *info, int user) |
1959 | { |
1960 | struct sh_mobile_lcdc_chan *ch = info->par; |
1961 | |
1962 | mutex_lock(&ch->open_lock); |
1963 | ch->use_count++; |
1964 | |
1965 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); |
1966 | mutex_unlock(&ch->open_lock); |
1967 | |
1968 | return 0; |
1969 | } |
1970 | |
1971 | static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var, |
1972 | struct fb_info *info) |
1973 | { |
1974 | struct sh_mobile_lcdc_chan *ch = info->par; |
1975 | struct sh_mobile_lcdc_priv *p = ch->lcdc; |
1976 | unsigned int best_dist = (unsigned int)-1; |
1977 | unsigned int best_xres = 0; |
1978 | unsigned int best_yres = 0; |
1979 | unsigned int i; |
1980 | int ret; |
1981 | |
1982 | /* If board code provides us with a list of available modes, make sure |
1983 | * we use one of them. Find the mode closest to the requested one. The |
1984 | * distance between two modes is defined as the size of the |
1985 | * non-overlapping parts of the two rectangles. |
1986 | */ |
1987 | for (i = 0; i < ch->cfg->num_modes; ++i) { |
1988 | const struct fb_videomode *mode = &ch->cfg->lcd_modes[i]; |
1989 | unsigned int dist; |
1990 | |
1991 | /* We can only round up. */ |
1992 | if (var->xres > mode->xres || var->yres > mode->yres) |
1993 | continue; |
1994 | |
1995 | dist = var->xres * var->yres + mode->xres * mode->yres |
1996 | - 2 * min(var->xres, mode->xres) |
1997 | * min(var->yres, mode->yres); |
1998 | |
1999 | if (dist < best_dist) { |
2000 | best_xres = mode->xres; |
2001 | best_yres = mode->yres; |
2002 | best_dist = dist; |
2003 | } |
2004 | } |
2005 | |
2006 | /* If no available mode can be used, return an error. */ |
2007 | if (ch->cfg->num_modes != 0) { |
2008 | if (best_dist == (unsigned int)-1) |
2009 | return -EINVAL; |
2010 | |
2011 | var->xres = best_xres; |
2012 | var->yres = best_yres; |
2013 | } |
2014 | |
2015 | ret = __sh_mobile_lcdc_check_var(var, info); |
2016 | if (ret < 0) |
2017 | return ret; |
2018 | |
2019 | /* only accept the forced_fourcc for dual channel configurations */ |
2020 | if (p->forced_fourcc && |
2021 | p->forced_fourcc != sh_mobile_format_fourcc(var)) |
2022 | return -EINVAL; |
2023 | |
2024 | return 0; |
2025 | } |
2026 | |
2027 | static int sh_mobile_lcdc_set_par(struct fb_info *info) |
2028 | { |
2029 | struct sh_mobile_lcdc_chan *ch = info->par; |
2030 | int ret; |
2031 | |
2032 | sh_mobile_lcdc_stop(ch->lcdc); |
2033 | |
2034 | ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var)); |
2035 | ch->colorspace = info->var.colorspace; |
2036 | |
2037 | ch->xres = info->var.xres; |
2038 | ch->xres_virtual = info->var.xres_virtual; |
2039 | ch->yres = info->var.yres; |
2040 | ch->yres_virtual = info->var.yres_virtual; |
2041 | |
2042 | if (ch->format->yuv) |
2043 | ch->pitch = info->var.xres_virtual; |
2044 | else |
2045 | ch->pitch = info->var.xres_virtual * ch->format->bpp / 8; |
2046 | |
2047 | ret = sh_mobile_lcdc_start(ch->lcdc); |
2048 | if (ret < 0) |
2049 | dev_err(info->dev, "%s: unable to restart LCDC\n", __func__); |
2050 | |
2051 | info->fix.line_length = ch->pitch; |
2052 | |
2053 | if (sh_mobile_format_is_fourcc(&info->var)) { |
2054 | info->fix.type = FB_TYPE_FOURCC; |
2055 | info->fix.visual = FB_VISUAL_FOURCC; |
2056 | } else { |
2057 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
2058 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
2059 | } |
2060 | |
2061 | return ret; |
2062 | } |
2063 | |
2064 | /* |
2065 | * Screen blanking. Behavior is as follows: |
2066 | * FB_BLANK_UNBLANK: screen unblanked, clocks enabled |
2067 | * FB_BLANK_NORMAL: screen blanked, clocks enabled |
2068 | * FB_BLANK_VSYNC, |
2069 | * FB_BLANK_HSYNC, |
2070 | * FB_BLANK_POWEROFF: screen blanked, clocks disabled |
2071 | */ |
2072 | static int sh_mobile_lcdc_blank(int blank, struct fb_info *info) |
2073 | { |
2074 | struct sh_mobile_lcdc_chan *ch = info->par; |
2075 | struct sh_mobile_lcdc_priv *p = ch->lcdc; |
2076 | |
2077 | /* blank the screen? */ |
2078 | if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) { |
2079 | struct fb_fillrect rect = { |
2080 | .width = ch->xres, |
2081 | .height = ch->yres, |
2082 | }; |
2083 | sh_mobile_lcdc_fillrect(info, &rect); |
2084 | } |
2085 | /* turn clocks on? */ |
2086 | if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) { |
2087 | sh_mobile_lcdc_clk_on(p); |
2088 | } |
2089 | /* turn clocks off? */ |
2090 | if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) { |
2091 | /* make sure the screen is updated with the black fill before |
2092 | * switching the clocks off. one vsync is not enough since |
2093 | * blanking may occur in the middle of a refresh. deferred io |
2094 | * mode will reenable the clocks and update the screen in time, |
2095 | * so it does not need this. */ |
2096 | if (!info->fbdefio) { |
2097 | sh_mobile_lcdc_wait_for_vsync(ch); |
2098 | sh_mobile_lcdc_wait_for_vsync(ch); |
2099 | } |
2100 | sh_mobile_lcdc_clk_off(p); |
2101 | } |
2102 | |
2103 | ch->blank_status = blank; |
2104 | return 0; |
2105 | } |
2106 | |
2107 | static int |
2108 | sh_mobile_lcdc_mmap(struct fb_info *info, struct vm_area_struct *vma) |
2109 | { |
2110 | struct sh_mobile_lcdc_chan *ch = info->par; |
2111 | |
2112 | return dma_mmap_coherent(ch->lcdc->dev, vma, ch->fb_mem, |
2113 | ch->dma_handle, ch->fb_size); |
2114 | } |
2115 | |
2116 | static struct fb_ops sh_mobile_lcdc_ops = { |
2117 | .owner = THIS_MODULE, |
2118 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2119 | .fb_read = fb_sys_read, |
2120 | .fb_write = fb_sys_write, |
2121 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
2122 | .fb_copyarea = sh_mobile_lcdc_copyarea, |
2123 | .fb_imageblit = sh_mobile_lcdc_imageblit, |
2124 | .fb_blank = sh_mobile_lcdc_blank, |
2125 | .fb_pan_display = sh_mobile_lcdc_pan, |
2126 | .fb_ioctl = sh_mobile_lcdc_ioctl, |
2127 | .fb_open = sh_mobile_lcdc_open, |
2128 | .fb_release = sh_mobile_lcdc_release, |
2129 | .fb_check_var = sh_mobile_lcdc_check_var, |
2130 | .fb_set_par = sh_mobile_lcdc_set_par, |
2131 | .fb_mmap = sh_mobile_lcdc_mmap, |
2132 | }; |
2133 | |
2134 | static void |
2135 | sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch) |
2136 | { |
2137 | if (ch->info && ch->info->dev) |
2138 | unregister_framebuffer(ch->info); |
2139 | } |
2140 | |
2141 | static int |
2142 | sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch) |
2143 | { |
2144 | struct fb_info *info = ch->info; |
2145 | int ret; |
2146 | |
2147 | if (info->fbdefio) { |
2148 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
2149 | ch->fb_size >> PAGE_SHIFT); |
2150 | if (!ch->sglist) { |
2151 | dev_err(ch->lcdc->dev, "cannot allocate sglist\n"); |
2152 | return -ENOMEM; |
2153 | } |
2154 | } |
2155 | |
2156 | info->bl_dev = ch->bl; |
2157 | |
2158 | ret = register_framebuffer(info); |
2159 | if (ret < 0) |
2160 | return ret; |
2161 | |
2162 | dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n", |
2163 | dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ? |
2164 | "mainlcd" : "sublcd", info->var.xres, info->var.yres, |
2165 | info->var.bits_per_pixel); |
2166 | |
2167 | /* deferred io mode: disable clock to save power */ |
2168 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
2169 | sh_mobile_lcdc_clk_off(ch->lcdc); |
2170 | |
2171 | return ret; |
2172 | } |
2173 | |
2174 | static void |
2175 | sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch) |
2176 | { |
2177 | struct fb_info *info = ch->info; |
2178 | |
2179 | if (!info || !info->device) |
2180 | return; |
2181 | |
2182 | if (ch->sglist) |
2183 | vfree(ch->sglist); |
2184 | |
2185 | fb_dealloc_cmap(&info->cmap); |
2186 | framebuffer_release(info); |
2187 | } |
2188 | |
2189 | static int |
2190 | sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch, |
2191 | const struct fb_videomode *modes, |
2192 | unsigned int num_modes) |
2193 | { |
2194 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
2195 | struct fb_var_screeninfo *var; |
2196 | struct fb_info *info; |
2197 | int ret; |
2198 | |
2199 | /* Allocate and initialize the frame buffer device. Create the modes |
2200 | * list and allocate the color map. |
2201 | */ |
2202 | info = framebuffer_alloc(0, priv->dev); |
2203 | if (info == NULL) { |
2204 | dev_err(priv->dev, "unable to allocate fb_info\n"); |
2205 | return -ENOMEM; |
2206 | } |
2207 | |
2208 | ch->info = info; |
2209 | |
2210 | info->flags = FBINFO_FLAG_DEFAULT; |
2211 | info->fbops = &sh_mobile_lcdc_ops; |
2212 | info->device = priv->dev; |
2213 | info->screen_base = ch->fb_mem; |
2214 | info->pseudo_palette = &ch->pseudo_palette; |
2215 | info->par = ch; |
2216 | |
2217 | fb_videomode_to_modelist(modes, num_modes, &info->modelist); |
2218 | |
2219 | ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); |
2220 | if (ret < 0) { |
2221 | dev_err(priv->dev, "unable to allocate cmap\n"); |
2222 | return ret; |
2223 | } |
2224 | |
2225 | /* Initialize fixed screen information. Restrict pan to 2 lines steps |
2226 | * for NV12 and NV21. |
2227 | */ |
2228 | info->fix = sh_mobile_lcdc_fix; |
2229 | info->fix.smem_start = ch->dma_handle; |
2230 | info->fix.smem_len = ch->fb_size; |
2231 | info->fix.line_length = ch->pitch; |
2232 | |
2233 | if (ch->format->yuv) |
2234 | info->fix.visual = FB_VISUAL_FOURCC; |
2235 | else |
2236 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
2237 | |
2238 | switch (ch->format->fourcc) { |
2239 | case V4L2_PIX_FMT_NV12: |
2240 | case V4L2_PIX_FMT_NV21: |
2241 | info->fix.ypanstep = 2; |
2242 | case V4L2_PIX_FMT_NV16: |
2243 | case V4L2_PIX_FMT_NV61: |
2244 | info->fix.xpanstep = 2; |
2245 | } |
2246 | |
2247 | /* Initialize variable screen information using the first mode as |
2248 | * default. |
2249 | */ |
2250 | var = &info->var; |
2251 | fb_videomode_to_var(var, modes); |
2252 | var->width = ch->display.width; |
2253 | var->height = ch->display.height; |
2254 | var->xres_virtual = ch->xres_virtual; |
2255 | var->yres_virtual = ch->yres_virtual; |
2256 | var->activate = FB_ACTIVATE_NOW; |
2257 | |
2258 | /* Use the legacy API by default for RGB formats, and the FOURCC API |
2259 | * for YUV formats. |
2260 | */ |
2261 | if (!ch->format->yuv) |
2262 | var->bits_per_pixel = ch->format->bpp; |
2263 | else |
2264 | var->grayscale = ch->format->fourcc; |
2265 | |
2266 | ret = sh_mobile_lcdc_check_var(var, info); |
2267 | if (ret) |
2268 | return ret; |
2269 | |
2270 | return 0; |
2271 | } |
2272 | |
2273 | /* ----------------------------------------------------------------------------- |
2274 | * Backlight |
2275 | */ |
2276 | |
2277 | static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev) |
2278 | { |
2279 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); |
2280 | int brightness = bdev->props.brightness; |
2281 | |
2282 | if (bdev->props.power != FB_BLANK_UNBLANK || |
2283 | bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) |
2284 | brightness = 0; |
2285 | |
2286 | ch->bl_brightness = brightness; |
2287 | return ch->cfg->bl_info.set_brightness(brightness); |
2288 | } |
2289 | |
2290 | static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev) |
2291 | { |
2292 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); |
2293 | |
2294 | return ch->bl_brightness; |
2295 | } |
2296 | |
2297 | static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev, |
2298 | struct fb_info *info) |
2299 | { |
2300 | return (info->bl_dev == bdev); |
2301 | } |
2302 | |
2303 | static struct backlight_ops sh_mobile_lcdc_bl_ops = { |
2304 | .options = BL_CORE_SUSPENDRESUME, |
2305 | .update_status = sh_mobile_lcdc_update_bl, |
2306 | .get_brightness = sh_mobile_lcdc_get_brightness, |
2307 | .check_fb = sh_mobile_lcdc_check_fb, |
2308 | }; |
2309 | |
2310 | static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent, |
2311 | struct sh_mobile_lcdc_chan *ch) |
2312 | { |
2313 | struct backlight_device *bl; |
2314 | |
2315 | bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch, |
2316 | &sh_mobile_lcdc_bl_ops, NULL); |
2317 | if (IS_ERR(bl)) { |
2318 | dev_err(parent, "unable to register backlight device: %ld\n", |
2319 | PTR_ERR(bl)); |
2320 | return NULL; |
2321 | } |
2322 | |
2323 | bl->props.max_brightness = ch->cfg->bl_info.max_brightness; |
2324 | bl->props.brightness = bl->props.max_brightness; |
2325 | backlight_update_status(bl); |
2326 | |
2327 | return bl; |
2328 | } |
2329 | |
2330 | static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev) |
2331 | { |
2332 | backlight_device_unregister(bdev); |
2333 | } |
2334 | |
2335 | /* ----------------------------------------------------------------------------- |
2336 | * Power management |
2337 | */ |
2338 | |
2339 | static int sh_mobile_lcdc_suspend(struct device *dev) |
2340 | { |
2341 | struct platform_device *pdev = to_platform_device(dev); |
2342 | |
2343 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); |
2344 | return 0; |
2345 | } |
2346 | |
2347 | static int sh_mobile_lcdc_resume(struct device *dev) |
2348 | { |
2349 | struct platform_device *pdev = to_platform_device(dev); |
2350 | |
2351 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); |
2352 | } |
2353 | |
2354 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
2355 | { |
2356 | struct platform_device *pdev = to_platform_device(dev); |
2357 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
2358 | |
2359 | /* turn off LCDC hardware */ |
2360 | lcdc_write(priv, _LDCNT1R, 0); |
2361 | |
2362 | return 0; |
2363 | } |
2364 | |
2365 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) |
2366 | { |
2367 | struct platform_device *pdev = to_platform_device(dev); |
2368 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
2369 | |
2370 | __sh_mobile_lcdc_start(priv); |
2371 | |
2372 | return 0; |
2373 | } |
2374 | |
2375 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2376 | .suspend = sh_mobile_lcdc_suspend, |
2377 | .resume = sh_mobile_lcdc_resume, |
2378 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
2379 | .runtime_resume = sh_mobile_lcdc_runtime_resume, |
2380 | }; |
2381 | |
2382 | /* ----------------------------------------------------------------------------- |
2383 | * Framebuffer notifier |
2384 | */ |
2385 | |
2386 | /* locking: called with info->lock held */ |
2387 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
2388 | unsigned long action, void *data) |
2389 | { |
2390 | struct fb_event *event = data; |
2391 | struct fb_info *info = event->info; |
2392 | struct sh_mobile_lcdc_chan *ch = info->par; |
2393 | |
2394 | if (&ch->lcdc->notifier != nb) |
2395 | return NOTIFY_DONE; |
2396 | |
2397 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", |
2398 | __func__, action, event->data); |
2399 | |
2400 | switch(action) { |
2401 | case FB_EVENT_SUSPEND: |
2402 | sh_mobile_lcdc_display_off(ch); |
2403 | sh_mobile_lcdc_stop(ch->lcdc); |
2404 | break; |
2405 | case FB_EVENT_RESUME: |
2406 | mutex_lock(&ch->open_lock); |
2407 | sh_mobile_fb_reconfig(info); |
2408 | mutex_unlock(&ch->open_lock); |
2409 | |
2410 | sh_mobile_lcdc_display_on(ch); |
2411 | sh_mobile_lcdc_start(ch->lcdc); |
2412 | } |
2413 | |
2414 | return NOTIFY_OK; |
2415 | } |
2416 | |
2417 | /* ----------------------------------------------------------------------------- |
2418 | * Probe/remove and driver init/exit |
2419 | */ |
2420 | |
2421 | static const struct fb_videomode default_720p = { |
2422 | .name = "HDMI 720p", |
2423 | .xres = 1280, |
2424 | .yres = 720, |
2425 | |
2426 | .left_margin = 220, |
2427 | .right_margin = 110, |
2428 | .hsync_len = 40, |
2429 | |
2430 | .upper_margin = 20, |
2431 | .lower_margin = 5, |
2432 | .vsync_len = 5, |
2433 | |
2434 | .pixclock = 13468, |
2435 | .refresh = 60, |
2436 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, |
2437 | }; |
2438 | |
2439 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) |
2440 | { |
2441 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
2442 | unsigned int i; |
2443 | |
2444 | fb_unregister_client(&priv->notifier); |
2445 | |
2446 | for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) |
2447 | sh_mobile_lcdc_overlay_fb_unregister(&priv->overlays[i]); |
2448 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) |
2449 | sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]); |
2450 | |
2451 | sh_mobile_lcdc_stop(priv); |
2452 | |
2453 | for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) { |
2454 | struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i]; |
2455 | |
2456 | sh_mobile_lcdc_overlay_fb_cleanup(ovl); |
2457 | |
2458 | if (ovl->fb_mem) |
2459 | dma_free_coherent(&pdev->dev, ovl->fb_size, |
2460 | ovl->fb_mem, ovl->dma_handle); |
2461 | } |
2462 | |
2463 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { |
2464 | struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; |
2465 | |
2466 | if (ch->tx_dev) { |
2467 | ch->tx_dev->lcdc = NULL; |
2468 | module_put(ch->cfg->tx_dev->dev.driver->owner); |
2469 | } |
2470 | |
2471 | sh_mobile_lcdc_channel_fb_cleanup(ch); |
2472 | |
2473 | if (ch->fb_mem) |
2474 | dma_free_coherent(&pdev->dev, ch->fb_size, |
2475 | ch->fb_mem, ch->dma_handle); |
2476 | } |
2477 | |
2478 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { |
2479 | struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; |
2480 | |
2481 | if (ch->bl) |
2482 | sh_mobile_lcdc_bl_remove(ch->bl); |
2483 | mutex_destroy(&ch->open_lock); |
2484 | } |
2485 | |
2486 | if (priv->dot_clk) { |
2487 | pm_runtime_disable(&pdev->dev); |
2488 | clk_put(priv->dot_clk); |
2489 | } |
2490 | |
2491 | if (priv->base) |
2492 | iounmap(priv->base); |
2493 | |
2494 | if (priv->irq) |
2495 | free_irq(priv->irq, priv); |
2496 | kfree(priv); |
2497 | return 0; |
2498 | } |
2499 | |
2500 | static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) |
2501 | { |
2502 | int interface_type = ch->cfg->interface_type; |
2503 | |
2504 | switch (interface_type) { |
2505 | case RGB8: |
2506 | case RGB9: |
2507 | case RGB12A: |
2508 | case RGB12B: |
2509 | case RGB16: |
2510 | case RGB18: |
2511 | case RGB24: |
2512 | case SYS8A: |
2513 | case SYS8B: |
2514 | case SYS8C: |
2515 | case SYS8D: |
2516 | case SYS9: |
2517 | case SYS12: |
2518 | case SYS16A: |
2519 | case SYS16B: |
2520 | case SYS16C: |
2521 | case SYS18: |
2522 | case SYS24: |
2523 | break; |
2524 | default: |
2525 | return -EINVAL; |
2526 | } |
2527 | |
2528 | /* SUBLCD only supports SYS interface */ |
2529 | if (lcdc_chan_is_sublcd(ch)) { |
2530 | if (!(interface_type & LDMT1R_IFM)) |
2531 | return -EINVAL; |
2532 | |
2533 | interface_type &= ~LDMT1R_IFM; |
2534 | } |
2535 | |
2536 | ch->ldmt1r_value = interface_type; |
2537 | return 0; |
2538 | } |
2539 | |
2540 | static int |
2541 | sh_mobile_lcdc_overlay_init(struct sh_mobile_lcdc_overlay *ovl) |
2542 | { |
2543 | const struct sh_mobile_lcdc_format_info *format; |
2544 | struct device *dev = ovl->channel->lcdc->dev; |
2545 | int ret; |
2546 | |
2547 | if (ovl->cfg->fourcc == 0) |
2548 | return 0; |
2549 | |
2550 | /* Validate the format. */ |
2551 | format = sh_mobile_format_info(ovl->cfg->fourcc); |
2552 | if (format == NULL) { |
2553 | dev_err(dev, "Invalid FOURCC %08x\n", ovl->cfg->fourcc); |
2554 | return -EINVAL; |
2555 | } |
2556 | |
2557 | ovl->enabled = false; |
2558 | ovl->mode = LCDC_OVERLAY_BLEND; |
2559 | ovl->alpha = 255; |
2560 | ovl->rop3 = 0; |
2561 | ovl->pos_x = 0; |
2562 | ovl->pos_y = 0; |
2563 | |
2564 | /* The default Y virtual resolution is twice the panel size to allow for |
2565 | * double-buffering. |
2566 | */ |
2567 | ovl->format = format; |
2568 | ovl->xres = ovl->cfg->max_xres; |
2569 | ovl->xres_virtual = ovl->xres; |
2570 | ovl->yres = ovl->cfg->max_yres; |
2571 | ovl->yres_virtual = ovl->yres * 2; |
2572 | |
2573 | if (!format->yuv) |
2574 | ovl->pitch = ovl->xres_virtual * format->bpp / 8; |
2575 | else |
2576 | ovl->pitch = ovl->xres_virtual; |
2577 | |
2578 | /* Allocate frame buffer memory. */ |
2579 | ovl->fb_size = ovl->cfg->max_xres * ovl->cfg->max_yres |
2580 | * format->bpp / 8 * 2; |
2581 | ovl->fb_mem = dma_alloc_coherent(dev, ovl->fb_size, &ovl->dma_handle, |
2582 | GFP_KERNEL); |
2583 | if (!ovl->fb_mem) { |
2584 | dev_err(dev, "unable to allocate buffer\n"); |
2585 | return -ENOMEM; |
2586 | } |
2587 | |
2588 | ret = sh_mobile_lcdc_overlay_fb_init(ovl); |
2589 | if (ret < 0) |
2590 | return ret; |
2591 | |
2592 | return 0; |
2593 | } |
2594 | |
2595 | static int |
2596 | sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch) |
2597 | { |
2598 | const struct sh_mobile_lcdc_format_info *format; |
2599 | const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg; |
2600 | struct device *dev = ch->lcdc->dev; |
2601 | const struct fb_videomode *max_mode; |
2602 | const struct fb_videomode *mode; |
2603 | unsigned int num_modes; |
2604 | unsigned int max_size; |
2605 | unsigned int i; |
2606 | |
2607 | mutex_init(&ch->open_lock); |
2608 | ch->notify = sh_mobile_lcdc_display_notify; |
2609 | |
2610 | /* Validate the format. */ |
2611 | format = sh_mobile_format_info(cfg->fourcc); |
2612 | if (format == NULL) { |
2613 | dev_err(dev, "Invalid FOURCC %08x.\n", cfg->fourcc); |
2614 | return -EINVAL; |
2615 | } |
2616 | |
2617 | /* Iterate through the modes to validate them and find the highest |
2618 | * resolution. |
2619 | */ |
2620 | max_mode = NULL; |
2621 | max_size = 0; |
2622 | |
2623 | for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) { |
2624 | unsigned int size = mode->yres * mode->xres; |
2625 | |
2626 | /* NV12/NV21 buffers must have even number of lines */ |
2627 | if ((cfg->fourcc == V4L2_PIX_FMT_NV12 || |
2628 | cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) { |
2629 | dev_err(dev, "yres must be multiple of 2 for " |
2630 | "YCbCr420 mode.\n"); |
2631 | return -EINVAL; |
2632 | } |
2633 | |
2634 | if (size > max_size) { |
2635 | max_mode = mode; |
2636 | max_size = size; |
2637 | } |
2638 | } |
2639 | |
2640 | if (!max_size) |
2641 | max_size = MAX_XRES * MAX_YRES; |
2642 | else |
2643 | dev_dbg(dev, "Found largest videomode %ux%u\n", |
2644 | max_mode->xres, max_mode->yres); |
2645 | |
2646 | if (cfg->lcd_modes == NULL) { |
2647 | mode = &default_720p; |
2648 | num_modes = 1; |
2649 | } else { |
2650 | mode = cfg->lcd_modes; |
2651 | num_modes = cfg->num_modes; |
2652 | } |
2653 | |
2654 | /* Use the first mode as default. The default Y virtual resolution is |
2655 | * twice the panel size to allow for double-buffering. |
2656 | */ |
2657 | ch->format = format; |
2658 | ch->xres = mode->xres; |
2659 | ch->xres_virtual = mode->xres; |
2660 | ch->yres = mode->yres; |
2661 | ch->yres_virtual = mode->yres * 2; |
2662 | |
2663 | if (!format->yuv) { |
2664 | ch->colorspace = V4L2_COLORSPACE_SRGB; |
2665 | ch->pitch = ch->xres_virtual * format->bpp / 8; |
2666 | } else { |
2667 | ch->colorspace = V4L2_COLORSPACE_REC709; |
2668 | ch->pitch = ch->xres_virtual; |
2669 | } |
2670 | |
2671 | ch->display.width = cfg->panel_cfg.width; |
2672 | ch->display.height = cfg->panel_cfg.height; |
2673 | ch->display.mode = *mode; |
2674 | |
2675 | /* Allocate frame buffer memory. */ |
2676 | ch->fb_size = max_size * format->bpp / 8 * 2; |
2677 | ch->fb_mem = dma_alloc_coherent(dev, ch->fb_size, &ch->dma_handle, |
2678 | GFP_KERNEL); |
2679 | if (ch->fb_mem == NULL) { |
2680 | dev_err(dev, "unable to allocate buffer\n"); |
2681 | return -ENOMEM; |
2682 | } |
2683 | |
2684 | /* Initialize the transmitter device if present. */ |
2685 | if (cfg->tx_dev) { |
2686 | if (!cfg->tx_dev->dev.driver || |
2687 | !try_module_get(cfg->tx_dev->dev.driver->owner)) { |
2688 | dev_warn(dev, "unable to get transmitter device\n"); |
2689 | return -EINVAL; |
2690 | } |
2691 | ch->tx_dev = platform_get_drvdata(cfg->tx_dev); |
2692 | ch->tx_dev->lcdc = ch; |
2693 | ch->tx_dev->def_mode = *mode; |
2694 | } |
2695 | |
2696 | return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes); |
2697 | } |
2698 | |
2699 | static int sh_mobile_lcdc_probe(struct platform_device *pdev) |
2700 | { |
2701 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
2702 | struct sh_mobile_lcdc_priv *priv; |
2703 | struct resource *res; |
2704 | int num_channels; |
2705 | int error; |
2706 | int i; |
2707 | |
2708 | if (!pdata) { |
2709 | dev_err(&pdev->dev, "no platform data defined\n"); |
2710 | return -EINVAL; |
2711 | } |
2712 | |
2713 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
2714 | i = platform_get_irq(pdev, 0); |
2715 | if (!res || i < 0) { |
2716 | dev_err(&pdev->dev, "cannot get platform resources\n"); |
2717 | return -ENOENT; |
2718 | } |
2719 | |
2720 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
2721 | if (!priv) { |
2722 | dev_err(&pdev->dev, "cannot allocate device data\n"); |
2723 | return -ENOMEM; |
2724 | } |
2725 | |
2726 | priv->dev = &pdev->dev; |
2727 | priv->meram_dev = pdata->meram_dev; |
2728 | platform_set_drvdata(pdev, priv); |
2729 | |
2730 | error = request_irq(i, sh_mobile_lcdc_irq, 0, |
2731 | dev_name(&pdev->dev), priv); |
2732 | if (error) { |
2733 | dev_err(&pdev->dev, "unable to request irq\n"); |
2734 | goto err1; |
2735 | } |
2736 | |
2737 | priv->irq = i; |
2738 | atomic_set(&priv->hw_usecnt, -1); |
2739 | |
2740 | for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) { |
2741 | struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels; |
2742 | |
2743 | ch->lcdc = priv; |
2744 | ch->cfg = &pdata->ch[i]; |
2745 | |
2746 | error = sh_mobile_lcdc_check_interface(ch); |
2747 | if (error) { |
2748 | dev_err(&pdev->dev, "unsupported interface type\n"); |
2749 | goto err1; |
2750 | } |
2751 | init_waitqueue_head(&ch->frame_end_wait); |
2752 | init_completion(&ch->vsync_completion); |
2753 | |
2754 | /* probe the backlight is there is one defined */ |
2755 | if (ch->cfg->bl_info.max_brightness) |
2756 | ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch); |
2757 | |
2758 | switch (pdata->ch[i].chan) { |
2759 | case LCDC_CHAN_MAINLCD: |
2760 | ch->enabled = LDCNT2R_ME; |
2761 | ch->reg_offs = lcdc_offs_mainlcd; |
2762 | num_channels++; |
2763 | break; |
2764 | case LCDC_CHAN_SUBLCD: |
2765 | ch->enabled = LDCNT2R_SE; |
2766 | ch->reg_offs = lcdc_offs_sublcd; |
2767 | num_channels++; |
2768 | break; |
2769 | } |
2770 | } |
2771 | |
2772 | if (!num_channels) { |
2773 | dev_err(&pdev->dev, "no channels defined\n"); |
2774 | error = -EINVAL; |
2775 | goto err1; |
2776 | } |
2777 | |
2778 | /* for dual channel LCDC (MAIN + SUB) force shared format setting */ |
2779 | if (num_channels == 2) |
2780 | priv->forced_fourcc = pdata->ch[0].fourcc; |
2781 | |
2782 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
2783 | if (!priv->base) |
2784 | goto err1; |
2785 | |
2786 | error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source); |
2787 | if (error) { |
2788 | dev_err(&pdev->dev, "unable to setup clocks\n"); |
2789 | goto err1; |
2790 | } |
2791 | |
2792 | /* Enable runtime PM. */ |
2793 | pm_runtime_enable(&pdev->dev); |
2794 | |
2795 | for (i = 0; i < num_channels; i++) { |
2796 | struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; |
2797 | |
2798 | error = sh_mobile_lcdc_channel_init(ch); |
2799 | if (error) |
2800 | goto err1; |
2801 | } |
2802 | |
2803 | for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) { |
2804 | struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i]; |
2805 | |
2806 | ovl->cfg = &pdata->overlays[i]; |
2807 | ovl->channel = &priv->ch[0]; |
2808 | |
2809 | error = sh_mobile_lcdc_overlay_init(ovl); |
2810 | if (error) |
2811 | goto err1; |
2812 | } |
2813 | |
2814 | error = sh_mobile_lcdc_start(priv); |
2815 | if (error) { |
2816 | dev_err(&pdev->dev, "unable to start hardware\n"); |
2817 | goto err1; |
2818 | } |
2819 | |
2820 | for (i = 0; i < num_channels; i++) { |
2821 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
2822 | |
2823 | error = sh_mobile_lcdc_channel_fb_register(ch); |
2824 | if (error) |
2825 | goto err1; |
2826 | } |
2827 | |
2828 | for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) { |
2829 | struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i]; |
2830 | |
2831 | error = sh_mobile_lcdc_overlay_fb_register(ovl); |
2832 | if (error) |
2833 | goto err1; |
2834 | } |
2835 | |
2836 | /* Failure ignored */ |
2837 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; |
2838 | fb_register_client(&priv->notifier); |
2839 | |
2840 | return 0; |
2841 | err1: |
2842 | sh_mobile_lcdc_remove(pdev); |
2843 | |
2844 | return error; |
2845 | } |
2846 | |
2847 | static struct platform_driver sh_mobile_lcdc_driver = { |
2848 | .driver = { |
2849 | .name = "sh_mobile_lcdc_fb", |
2850 | .owner = THIS_MODULE, |
2851 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
2852 | }, |
2853 | .probe = sh_mobile_lcdc_probe, |
2854 | .remove = sh_mobile_lcdc_remove, |
2855 | }; |
2856 | |
2857 | module_platform_driver(sh_mobile_lcdc_driver); |
2858 | |
2859 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); |
2860 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); |
2861 | MODULE_LICENSE("GPL v2"); |
2862 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
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master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9