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Commit | Line | Data |
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cfb4f5d1 MD |
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 | ||
f1f60b5f LP |
11 | #include <linux/atomic.h> |
12 | #include <linux/backlight.h> | |
cfb4f5d1 | 13 | #include <linux/clk.h> |
f1f60b5f | 14 | #include <linux/console.h> |
cfb4f5d1 | 15 | #include <linux/dma-mapping.h> |
f1f60b5f LP |
16 | #include <linux/delay.h> |
17 | #include <linux/gpio.h> | |
18 | #include <linux/init.h> | |
8564557a | 19 | #include <linux/interrupt.h> |
40331b21 | 20 | #include <linux/ioctl.h> |
f1f60b5f LP |
21 | #include <linux/kernel.h> |
22 | #include <linux/mm.h> | |
355b200b | 23 | #include <linux/module.h> |
f1f60b5f LP |
24 | #include <linux/platform_device.h> |
25 | #include <linux/pm_runtime.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/videodev2.h> | |
28 | #include <linux/vmalloc.h> | |
29 | ||
225c9a8d | 30 | #include <video/sh_mobile_lcdc.h> |
8a20974f | 31 | #include <video/sh_mobile_meram.h> |
cfb4f5d1 | 32 | |
6de9edd5 GL |
33 | #include "sh_mobile_lcdcfb.h" |
34 | ||
a6f15ade PE |
35 | #define SIDE_B_OFFSET 0x1000 |
36 | #define MIRROR_OFFSET 0x2000 | |
cfb4f5d1 | 37 | |
d2ecbab5 GL |
38 | #define MAX_XRES 1920 |
39 | #define MAX_YRES 1080 | |
cfb4f5d1 | 40 | |
f1f60b5f LP |
41 | struct sh_mobile_lcdc_priv { |
42 | void __iomem *base; | |
43 | int irq; | |
44 | atomic_t hw_usecnt; | |
45 | struct device *dev; | |
46 | struct clk *dot_clk; | |
47 | unsigned long lddckr; | |
48 | struct sh_mobile_lcdc_chan ch[2]; | |
49 | struct notifier_block notifier; | |
50 | int started; | |
51 | int forced_fourcc; /* 2 channel LCDC must share fourcc setting */ | |
52 | struct sh_mobile_meram_info *meram_dev; | |
53 | }; | |
54 | ||
55 | /* ----------------------------------------------------------------------------- | |
56 | * Registers access | |
57 | */ | |
58 | ||
0246c471 | 59 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
60 | [LDDCKPAT1R] = 0x400, |
61 | [LDDCKPAT2R] = 0x404, | |
62 | [LDMT1R] = 0x418, | |
63 | [LDMT2R] = 0x41c, | |
64 | [LDMT3R] = 0x420, | |
65 | [LDDFR] = 0x424, | |
66 | [LDSM1R] = 0x428, | |
8564557a | 67 | [LDSM2R] = 0x42c, |
cfb4f5d1 | 68 | [LDSA1R] = 0x430, |
53b50314 | 69 | [LDSA2R] = 0x434, |
cfb4f5d1 MD |
70 | [LDMLSR] = 0x438, |
71 | [LDHCNR] = 0x448, | |
72 | [LDHSYNR] = 0x44c, | |
73 | [LDVLNR] = 0x450, | |
74 | [LDVSYNR] = 0x454, | |
75 | [LDPMR] = 0x460, | |
6011bdea | 76 | [LDHAJR] = 0x4a0, |
cfb4f5d1 MD |
77 | }; |
78 | ||
0246c471 | 79 | static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
80 | [LDDCKPAT1R] = 0x408, |
81 | [LDDCKPAT2R] = 0x40c, | |
82 | [LDMT1R] = 0x600, | |
83 | [LDMT2R] = 0x604, | |
84 | [LDMT3R] = 0x608, | |
85 | [LDDFR] = 0x60c, | |
86 | [LDSM1R] = 0x610, | |
8564557a | 87 | [LDSM2R] = 0x614, |
cfb4f5d1 MD |
88 | [LDSA1R] = 0x618, |
89 | [LDMLSR] = 0x620, | |
90 | [LDHCNR] = 0x624, | |
91 | [LDHSYNR] = 0x628, | |
92 | [LDVLNR] = 0x62c, | |
93 | [LDVSYNR] = 0x630, | |
94 | [LDPMR] = 0x63c, | |
95 | }; | |
96 | ||
a6f15ade PE |
97 | static bool banked(int reg_nr) |
98 | { | |
99 | switch (reg_nr) { | |
100 | case LDMT1R: | |
101 | case LDMT2R: | |
102 | case LDMT3R: | |
103 | case LDDFR: | |
104 | case LDSM1R: | |
105 | case LDSA1R: | |
53b50314 | 106 | case LDSA2R: |
a6f15ade PE |
107 | case LDMLSR: |
108 | case LDHCNR: | |
109 | case LDHSYNR: | |
110 | case LDVLNR: | |
111 | case LDVSYNR: | |
112 | return true; | |
113 | } | |
114 | return false; | |
115 | } | |
116 | ||
f1f60b5f LP |
117 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) |
118 | { | |
119 | return chan->cfg.chan == LCDC_CHAN_SUBLCD; | |
120 | } | |
121 | ||
cfb4f5d1 MD |
122 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
123 | int reg_nr, unsigned long data) | |
124 | { | |
125 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); | |
a6f15ade PE |
126 | if (banked(reg_nr)) |
127 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
128 | SIDE_B_OFFSET); | |
129 | } | |
130 | ||
131 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, | |
132 | int reg_nr, unsigned long data) | |
133 | { | |
134 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
135 | MIRROR_OFFSET); | |
cfb4f5d1 MD |
136 | } |
137 | ||
138 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, | |
139 | int reg_nr) | |
140 | { | |
141 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); | |
142 | } | |
143 | ||
144 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, | |
145 | unsigned long reg_offs, unsigned long data) | |
146 | { | |
147 | iowrite32(data, priv->base + reg_offs); | |
148 | } | |
149 | ||
150 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, | |
151 | unsigned long reg_offs) | |
152 | { | |
153 | return ioread32(priv->base + reg_offs); | |
154 | } | |
155 | ||
156 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, | |
157 | unsigned long reg_offs, | |
158 | unsigned long mask, unsigned long until) | |
159 | { | |
160 | while ((lcdc_read(priv, reg_offs) & mask) != until) | |
161 | cpu_relax(); | |
162 | } | |
163 | ||
f1f60b5f LP |
164 | /* ----------------------------------------------------------------------------- |
165 | * Clock management | |
166 | */ | |
167 | ||
168 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) | |
cfb4f5d1 | 169 | { |
f1f60b5f LP |
170 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
171 | if (priv->dot_clk) | |
172 | clk_enable(priv->dot_clk); | |
173 | pm_runtime_get_sync(priv->dev); | |
174 | if (priv->meram_dev && priv->meram_dev->pdev) | |
175 | pm_runtime_get_sync(&priv->meram_dev->pdev->dev); | |
176 | } | |
cfb4f5d1 MD |
177 | } |
178 | ||
f1f60b5f LP |
179 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) |
180 | { | |
181 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { | |
182 | if (priv->meram_dev && priv->meram_dev->pdev) | |
183 | pm_runtime_put_sync(&priv->meram_dev->pdev->dev); | |
184 | pm_runtime_put(priv->dev); | |
185 | if (priv->dot_clk) | |
186 | clk_disable(priv->dot_clk); | |
187 | } | |
188 | } | |
189 | ||
190 | static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, | |
191 | int clock_source, | |
192 | struct sh_mobile_lcdc_priv *priv) | |
193 | { | |
194 | char *str; | |
195 | ||
196 | switch (clock_source) { | |
197 | case LCDC_CLK_BUS: | |
198 | str = "bus_clk"; | |
199 | priv->lddckr = LDDCKR_ICKSEL_BUS; | |
200 | break; | |
201 | case LCDC_CLK_PERIPHERAL: | |
202 | str = "peripheral_clk"; | |
203 | priv->lddckr = LDDCKR_ICKSEL_MIPI; | |
204 | break; | |
205 | case LCDC_CLK_EXTERNAL: | |
206 | str = NULL; | |
207 | priv->lddckr = LDDCKR_ICKSEL_HDMI; | |
208 | break; | |
209 | default: | |
210 | return -EINVAL; | |
211 | } | |
212 | ||
213 | if (str) { | |
214 | priv->dot_clk = clk_get(&pdev->dev, str); | |
215 | if (IS_ERR(priv->dot_clk)) { | |
216 | dev_err(&pdev->dev, "cannot get dot clock %s\n", str); | |
217 | return PTR_ERR(priv->dot_clk); | |
218 | } | |
219 | } | |
220 | ||
221 | /* Runtime PM support involves two step for this driver: | |
222 | * 1) Enable Runtime PM | |
223 | * 2) Force Runtime PM Resume since hardware is accessed from probe() | |
224 | */ | |
225 | priv->dev = &pdev->dev; | |
226 | pm_runtime_enable(priv->dev); | |
227 | pm_runtime_resume(priv->dev); | |
228 | return 0; | |
229 | } | |
230 | ||
231 | /* ----------------------------------------------------------------------------- | |
232 | * Sys panel and deferred I/O | |
233 | */ | |
234 | ||
cfb4f5d1 MD |
235 | static void lcdc_sys_write_index(void *handle, unsigned long data) |
236 | { | |
237 | struct sh_mobile_lcdc_chan *ch = handle; | |
238 | ||
ce1c0b08 LP |
239 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT); |
240 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
241 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | | |
242 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
243 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
cfb4f5d1 MD |
244 | } |
245 | ||
246 | static void lcdc_sys_write_data(void *handle, unsigned long data) | |
247 | { | |
248 | struct sh_mobile_lcdc_chan *ch = handle; | |
249 | ||
ce1c0b08 LP |
250 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW); |
251 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
252 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | | |
253 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
254 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
cfb4f5d1 MD |
255 | } |
256 | ||
257 | static unsigned long lcdc_sys_read_data(void *handle) | |
258 | { | |
259 | struct sh_mobile_lcdc_chan *ch = handle; | |
260 | ||
ce1c0b08 LP |
261 | lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR); |
262 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
263 | lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA | | |
264 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
cfb4f5d1 | 265 | udelay(1); |
ce1c0b08 | 266 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
cfb4f5d1 | 267 | |
ce1c0b08 | 268 | return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK; |
cfb4f5d1 MD |
269 | } |
270 | ||
271 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { | |
272 | lcdc_sys_write_index, | |
273 | lcdc_sys_write_data, | |
274 | lcdc_sys_read_data, | |
275 | }; | |
276 | ||
1c6a307a PM |
277 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
278 | struct list_head *pagelist) | |
279 | { | |
280 | struct sh_mobile_lcdc_chan *ch = info->par; | |
281 | unsigned int nr_pages_max = info->fix.smem_len >> PAGE_SHIFT; | |
282 | struct page *page; | |
283 | int nr_pages = 0; | |
284 | ||
285 | sg_init_table(ch->sglist, nr_pages_max); | |
286 | ||
287 | list_for_each_entry(page, pagelist, lru) | |
288 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); | |
289 | ||
290 | return nr_pages; | |
291 | } | |
292 | ||
8564557a MD |
293 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
294 | struct list_head *pagelist) | |
295 | { | |
296 | struct sh_mobile_lcdc_chan *ch = info->par; | |
ef61aae4 | 297 | struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg; |
8564557a MD |
298 | |
299 | /* enable clocks before accessing hardware */ | |
300 | sh_mobile_lcdc_clk_on(ch->lcdc); | |
301 | ||
5c1a56b5 PM |
302 | /* |
303 | * It's possible to get here without anything on the pagelist via | |
304 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() | |
305 | * invocation. In the former case, the acceleration routines are | |
306 | * stepped in to when using the framebuffer console causing the | |
307 | * workqueue to be scheduled without any dirty pages on the list. | |
308 | * | |
309 | * Despite this, a panel update is still needed given that the | |
310 | * acceleration routines have their own methods for writing in | |
311 | * that still need to be updated. | |
312 | * | |
313 | * The fsync() and empty pagelist case could be optimized for, | |
314 | * but we don't bother, as any application exhibiting such | |
315 | * behaviour is fundamentally broken anyways. | |
316 | */ | |
317 | if (!list_empty(pagelist)) { | |
318 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); | |
319 | ||
320 | /* trigger panel update */ | |
321 | dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
322 | if (bcfg->start_transfer) |
323 | bcfg->start_transfer(bcfg->board_data, ch, | |
324 | &sh_mobile_lcdc_sys_bus_ops); | |
ce1c0b08 | 325 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
5c1a56b5 | 326 | dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); |
ef61aae4 MD |
327 | } else { |
328 | if (bcfg->start_transfer) | |
329 | bcfg->start_transfer(bcfg->board_data, ch, | |
330 | &sh_mobile_lcdc_sys_bus_ops); | |
ce1c0b08 | 331 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
ef61aae4 | 332 | } |
8564557a MD |
333 | } |
334 | ||
335 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) | |
336 | { | |
337 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
338 | ||
339 | if (fbdefio) | |
340 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); | |
341 | } | |
342 | ||
f1f60b5f LP |
343 | /* ----------------------------------------------------------------------------- |
344 | * Format helpers | |
345 | */ | |
346 | ||
347 | static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var) | |
348 | { | |
349 | if (var->grayscale > 1) | |
350 | return var->grayscale; | |
351 | ||
352 | switch (var->bits_per_pixel) { | |
353 | case 16: | |
354 | return V4L2_PIX_FMT_RGB565; | |
355 | case 24: | |
356 | return V4L2_PIX_FMT_BGR24; | |
357 | case 32: | |
358 | return V4L2_PIX_FMT_BGR32; | |
359 | default: | |
360 | return 0; | |
361 | } | |
362 | } | |
363 | ||
364 | static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var) | |
365 | { | |
366 | return var->grayscale > 1; | |
367 | } | |
368 | ||
369 | static bool sh_mobile_format_is_yuv(const struct fb_var_screeninfo *var) | |
370 | { | |
371 | if (var->grayscale <= 1) | |
372 | return false; | |
373 | ||
374 | switch (var->grayscale) { | |
375 | case V4L2_PIX_FMT_NV12: | |
376 | case V4L2_PIX_FMT_NV21: | |
377 | case V4L2_PIX_FMT_NV16: | |
378 | case V4L2_PIX_FMT_NV61: | |
379 | case V4L2_PIX_FMT_NV24: | |
380 | case V4L2_PIX_FMT_NV42: | |
381 | return true; | |
382 | ||
383 | default: | |
384 | return false; | |
385 | } | |
386 | } | |
387 | ||
388 | /* ----------------------------------------------------------------------------- | |
389 | * Start, stop and IRQ | |
390 | */ | |
391 | ||
8564557a MD |
392 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) |
393 | { | |
394 | struct sh_mobile_lcdc_priv *priv = data; | |
2feb075a | 395 | struct sh_mobile_lcdc_chan *ch; |
9dd38819 | 396 | unsigned long ldintr; |
2feb075a MD |
397 | int is_sub; |
398 | int k; | |
8564557a | 399 | |
dc48665f LP |
400 | /* Acknowledge interrupts and disable further VSYNC End IRQs. */ |
401 | ldintr = lcdc_read(priv, _LDINTR); | |
402 | lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE); | |
8564557a | 403 | |
2feb075a | 404 | /* figure out if this interrupt is for main or sub lcd */ |
ce1c0b08 | 405 | is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0; |
2feb075a | 406 | |
9dd38819 | 407 | /* wake up channel and disable clocks */ |
2feb075a MD |
408 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
409 | ch = &priv->ch[k]; | |
410 | ||
411 | if (!ch->enabled) | |
412 | continue; | |
413 | ||
dc48665f | 414 | /* Frame End */ |
9dd38819 PE |
415 | if (ldintr & LDINTR_FS) { |
416 | if (is_sub == lcdc_chan_is_sublcd(ch)) { | |
417 | ch->frame_end = 1; | |
418 | wake_up(&ch->frame_end_wait); | |
2feb075a | 419 | |
9dd38819 PE |
420 | sh_mobile_lcdc_clk_off(priv); |
421 | } | |
422 | } | |
423 | ||
424 | /* VSYNC End */ | |
40331b21 PE |
425 | if (ldintr & LDINTR_VES) |
426 | complete(&ch->vsync_completion); | |
2feb075a MD |
427 | } |
428 | ||
8564557a MD |
429 | return IRQ_HANDLED; |
430 | } | |
431 | ||
cfb4f5d1 MD |
432 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
433 | int start) | |
434 | { | |
435 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); | |
436 | int k; | |
437 | ||
438 | /* start or stop the lcdc */ | |
439 | if (start) | |
ce1c0b08 | 440 | lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO); |
cfb4f5d1 | 441 | else |
ce1c0b08 | 442 | lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO); |
cfb4f5d1 MD |
443 | |
444 | /* wait until power is applied/stopped on all channels */ | |
445 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
446 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) | |
447 | while (1) { | |
ce1c0b08 LP |
448 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) |
449 | & LDPMR_LPS; | |
450 | if (start && tmp == LDPMR_LPS) | |
cfb4f5d1 MD |
451 | break; |
452 | if (!start && tmp == 0) | |
453 | break; | |
454 | cpu_relax(); | |
455 | } | |
456 | ||
457 | if (!start) | |
458 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ | |
459 | } | |
460 | ||
6011bdea GL |
461 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
462 | { | |
1c120deb GL |
463 | struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var; |
464 | unsigned long h_total, hsync_pos, display_h_total; | |
6011bdea GL |
465 | u32 tmp; |
466 | ||
467 | tmp = ch->ldmt1r_value; | |
ce1c0b08 LP |
468 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL; |
469 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL; | |
470 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0; | |
471 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0; | |
472 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0; | |
473 | tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0; | |
474 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0; | |
6011bdea GL |
475 | lcdc_write_chan(ch, LDMT1R, tmp); |
476 | ||
477 | /* setup SYS bus */ | |
478 | lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); | |
479 | lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); | |
480 | ||
481 | /* horizontal configuration */ | |
1c120deb GL |
482 | h_total = display_var->xres + display_var->hsync_len + |
483 | display_var->left_margin + display_var->right_margin; | |
6011bdea | 484 | tmp = h_total / 8; /* HTCN */ |
1c120deb | 485 | tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */ |
6011bdea GL |
486 | lcdc_write_chan(ch, LDHCNR, tmp); |
487 | ||
1c120deb | 488 | hsync_pos = display_var->xres + display_var->right_margin; |
6011bdea | 489 | tmp = hsync_pos / 8; /* HSYNP */ |
1c120deb | 490 | tmp |= (display_var->hsync_len / 8) << 16; /* HSYNW */ |
6011bdea GL |
491 | lcdc_write_chan(ch, LDHSYNR, tmp); |
492 | ||
493 | /* vertical configuration */ | |
1c120deb GL |
494 | tmp = display_var->yres + display_var->vsync_len + |
495 | display_var->upper_margin + display_var->lower_margin; /* VTLN */ | |
496 | tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */ | |
6011bdea GL |
497 | lcdc_write_chan(ch, LDVLNR, tmp); |
498 | ||
1c120deb GL |
499 | tmp = display_var->yres + display_var->lower_margin; /* VSYNP */ |
500 | tmp |= display_var->vsync_len << 16; /* VSYNW */ | |
6011bdea GL |
501 | lcdc_write_chan(ch, LDVSYNR, tmp); |
502 | ||
503 | /* Adjust horizontal synchronisation for HDMI */ | |
1c120deb GL |
504 | display_h_total = display_var->xres + display_var->hsync_len + |
505 | display_var->left_margin + display_var->right_margin; | |
506 | tmp = ((display_var->xres & 7) << 24) | | |
507 | ((display_h_total & 7) << 16) | | |
508 | ((display_var->hsync_len & 7) << 8) | | |
41e583c2 | 509 | (hsync_pos & 7); |
6011bdea GL |
510 | lcdc_write_chan(ch, LDHAJR, tmp); |
511 | } | |
512 | ||
9a217e34 LP |
513 | /* |
514 | * __sh_mobile_lcdc_start - Configure and tart the LCDC | |
515 | * @priv: LCDC device | |
516 | * | |
517 | * Configure all enabled channels and start the LCDC device. All external | |
518 | * devices (clocks, MERAM, panels, ...) are not touched by this function. | |
519 | */ | |
520 | static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) | |
cfb4f5d1 MD |
521 | { |
522 | struct sh_mobile_lcdc_chan *ch; | |
cfb4f5d1 | 523 | unsigned long tmp; |
9a217e34 | 524 | int k, m; |
8564557a | 525 | |
9a217e34 LP |
526 | /* Enable LCDC channels. Read data from external memory, avoid using the |
527 | * BEU for now. | |
528 | */ | |
529 | lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled); | |
cfb4f5d1 | 530 | |
9a217e34 | 531 | /* Stop the LCDC first and disable all interrupts. */ |
cfb4f5d1 | 532 | sh_mobile_lcdc_start_stop(priv, 0); |
9a217e34 | 533 | lcdc_write(priv, _LDINTR, 0); |
cfb4f5d1 | 534 | |
9a217e34 | 535 | /* Configure power supply, dot clocks and start them. */ |
cfb4f5d1 MD |
536 | tmp = priv->lddckr; |
537 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
538 | ch = &priv->ch[k]; | |
9a217e34 | 539 | if (!ch->enabled) |
cfb4f5d1 MD |
540 | continue; |
541 | ||
9a217e34 LP |
542 | /* Power supply */ |
543 | lcdc_write_chan(ch, LDPMR, 0); | |
544 | ||
cfb4f5d1 MD |
545 | m = ch->cfg.clock_divider; |
546 | if (!m) | |
547 | continue; | |
548 | ||
505c7de5 LP |
549 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider |
550 | * denominator. | |
551 | */ | |
552 | lcdc_write_chan(ch, LDDCKPAT1R, 0); | |
553 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); | |
554 | ||
cfb4f5d1 | 555 | if (m == 1) |
ce1c0b08 | 556 | m = LDDCKR_MOSEL; |
cfb4f5d1 | 557 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); |
cfb4f5d1 MD |
558 | } |
559 | ||
560 | lcdc_write(priv, _LDDCKR, tmp); | |
cfb4f5d1 MD |
561 | lcdc_write(priv, _LDDCKSTPR, 0); |
562 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); | |
563 | ||
9a217e34 | 564 | /* Setup geometry, format, frame buffer memory and operation mode. */ |
cfb4f5d1 MD |
565 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
566 | ch = &priv->ch[k]; | |
cfb4f5d1 MD |
567 | if (!ch->enabled) |
568 | continue; | |
569 | ||
6011bdea | 570 | sh_mobile_lcdc_geometry(ch); |
cfb4f5d1 | 571 | |
edd153a3 LP |
572 | switch (sh_mobile_format_fourcc(&ch->info->var)) { |
573 | case V4L2_PIX_FMT_RGB565: | |
574 | tmp = LDDFR_PKF_RGB16; | |
575 | break; | |
576 | case V4L2_PIX_FMT_BGR24: | |
577 | tmp = LDDFR_PKF_RGB24; | |
578 | break; | |
579 | case V4L2_PIX_FMT_BGR32: | |
580 | tmp = LDDFR_PKF_ARGB32; | |
581 | break; | |
582 | case V4L2_PIX_FMT_NV12: | |
583 | case V4L2_PIX_FMT_NV21: | |
584 | tmp = LDDFR_CC | LDDFR_YF_420; | |
585 | break; | |
586 | case V4L2_PIX_FMT_NV16: | |
587 | case V4L2_PIX_FMT_NV61: | |
588 | tmp = LDDFR_CC | LDDFR_YF_422; | |
589 | break; | |
590 | case V4L2_PIX_FMT_NV24: | |
591 | case V4L2_PIX_FMT_NV42: | |
592 | tmp = LDDFR_CC | LDDFR_YF_444; | |
593 | break; | |
594 | } | |
595 | ||
596 | if (sh_mobile_format_is_yuv(&ch->info->var)) { | |
597 | switch (ch->info->var.colorspace) { | |
598 | case V4L2_COLORSPACE_REC709: | |
599 | tmp |= LDDFR_CF1; | |
53b50314 | 600 | break; |
edd153a3 LP |
601 | case V4L2_COLORSPACE_JPEG: |
602 | tmp |= LDDFR_CF0; | |
53b50314 DHG |
603 | break; |
604 | } | |
417d4827 | 605 | } |
7caa4342 | 606 | |
9a217e34 LP |
607 | lcdc_write_chan(ch, LDDFR, tmp); |
608 | lcdc_write_chan(ch, LDMLSR, ch->pitch); | |
609 | lcdc_write_chan(ch, LDSA1R, ch->base_addr_y); | |
edd153a3 | 610 | if (sh_mobile_format_is_yuv(&ch->info->var)) |
9a217e34 | 611 | lcdc_write_chan(ch, LDSA2R, ch->base_addr_c); |
7caa4342 | 612 | |
9a217e34 LP |
613 | /* When using deferred I/O mode, configure the LCDC for one-shot |
614 | * operation and enable the frame end interrupt. Otherwise use | |
615 | * continuous read mode. | |
616 | */ | |
617 | if (ch->ldmt1r_value & LDMT1R_IFM && | |
618 | ch->cfg.sys_bus_cfg.deferred_io_msec) { | |
619 | lcdc_write_chan(ch, LDSM1R, LDSM1R_OS); | |
620 | lcdc_write(priv, _LDINTR, LDINTR_FE); | |
621 | } else { | |
622 | lcdc_write_chan(ch, LDSM1R, 0); | |
623 | } | |
624 | } | |
7caa4342 | 625 | |
9a217e34 | 626 | /* Word and long word swap. */ |
edd153a3 LP |
627 | switch (sh_mobile_format_fourcc(&priv->ch[0].info->var)) { |
628 | case V4L2_PIX_FMT_RGB565: | |
629 | case V4L2_PIX_FMT_NV21: | |
630 | case V4L2_PIX_FMT_NV61: | |
631 | case V4L2_PIX_FMT_NV42: | |
632 | tmp = LDDDSR_LS | LDDDSR_WS; | |
633 | break; | |
634 | case V4L2_PIX_FMT_BGR24: | |
635 | case V4L2_PIX_FMT_NV12: | |
636 | case V4L2_PIX_FMT_NV16: | |
637 | case V4L2_PIX_FMT_NV24: | |
9a217e34 | 638 | tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; |
edd153a3 LP |
639 | break; |
640 | case V4L2_PIX_FMT_BGR32: | |
641 | default: | |
642 | tmp = LDDDSR_LS; | |
643 | break; | |
9a217e34 LP |
644 | } |
645 | lcdc_write(priv, _LDDDSR, tmp); | |
7caa4342 | 646 | |
9a217e34 LP |
647 | /* Enable the display output. */ |
648 | lcdc_write(priv, _LDCNT1R, LDCNT1R_DE); | |
649 | sh_mobile_lcdc_start_stop(priv, 1); | |
650 | priv->started = 1; | |
651 | } | |
cfb4f5d1 | 652 | |
9a217e34 LP |
653 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
654 | { | |
655 | struct sh_mobile_meram_info *mdev = priv->meram_dev; | |
656 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
657 | struct sh_mobile_lcdc_chan *ch; | |
658 | unsigned long tmp; | |
659 | int ret; | |
660 | int k; | |
cfb4f5d1 | 661 | |
9a217e34 LP |
662 | /* enable clocks before accessing the hardware */ |
663 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
664 | if (priv->ch[k].enabled) | |
665 | sh_mobile_lcdc_clk_on(priv); | |
666 | } | |
8564557a | 667 | |
9a217e34 LP |
668 | /* reset */ |
669 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR); | |
670 | lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0); | |
8564557a | 671 | |
9a217e34 LP |
672 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
673 | ch = &priv->ch[k]; | |
8564557a | 674 | |
9a217e34 LP |
675 | if (!ch->enabled) |
676 | continue; | |
677 | ||
678 | board_cfg = &ch->cfg.board_cfg; | |
679 | if (board_cfg->setup_sys) { | |
680 | ret = board_cfg->setup_sys(board_cfg->board_data, ch, | |
681 | &sh_mobile_lcdc_sys_bus_ops); | |
682 | if (ret) | |
683 | return ret; | |
8564557a | 684 | } |
cfb4f5d1 MD |
685 | } |
686 | ||
9a217e34 LP |
687 | /* Compute frame buffer base address and pitch for each channel. */ |
688 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
689 | struct sh_mobile_meram_cfg *cfg; | |
690 | int pixelformat; | |
cfb4f5d1 | 691 | |
9a217e34 LP |
692 | ch = &priv->ch[k]; |
693 | if (!ch->enabled) | |
694 | continue; | |
cfb4f5d1 | 695 | |
9a217e34 LP |
696 | ch->base_addr_y = ch->info->fix.smem_start; |
697 | ch->base_addr_c = ch->base_addr_y | |
698 | + ch->info->var.xres | |
699 | * ch->info->var.yres_virtual; | |
700 | ch->pitch = ch->info->fix.line_length; | |
701 | ||
702 | /* Enable MERAM if possible. */ | |
703 | cfg = ch->cfg.meram_cfg; | |
704 | if (mdev == NULL || mdev->ops == NULL || cfg == NULL) | |
705 | continue; | |
706 | ||
707 | /* we need to de-init configured ICBs before we can | |
708 | * re-initialize them. | |
709 | */ | |
710 | if (ch->meram_enabled) { | |
711 | mdev->ops->meram_unregister(mdev, cfg); | |
712 | ch->meram_enabled = 0; | |
713 | } | |
714 | ||
edd153a3 LP |
715 | switch (sh_mobile_format_fourcc(&ch->info->var)) { |
716 | case V4L2_PIX_FMT_NV12: | |
717 | case V4L2_PIX_FMT_NV21: | |
718 | case V4L2_PIX_FMT_NV16: | |
719 | case V4L2_PIX_FMT_NV61: | |
9a217e34 | 720 | pixelformat = SH_MOBILE_MERAM_PF_NV; |
edd153a3 LP |
721 | break; |
722 | case V4L2_PIX_FMT_NV24: | |
723 | case V4L2_PIX_FMT_NV42: | |
724 | pixelformat = SH_MOBILE_MERAM_PF_NV24; | |
725 | break; | |
726 | case V4L2_PIX_FMT_RGB565: | |
727 | case V4L2_PIX_FMT_BGR24: | |
728 | case V4L2_PIX_FMT_BGR32: | |
729 | default: | |
730 | pixelformat = SH_MOBILE_MERAM_PF_RGB; | |
731 | break; | |
732 | } | |
9a217e34 LP |
733 | |
734 | ret = mdev->ops->meram_register(mdev, cfg, ch->pitch, | |
735 | ch->info->var.yres, pixelformat, | |
736 | ch->base_addr_y, ch->base_addr_c, | |
737 | &ch->base_addr_y, &ch->base_addr_c, | |
738 | &ch->pitch); | |
739 | if (!ret) | |
740 | ch->meram_enabled = 1; | |
741 | } | |
742 | ||
743 | /* Start the LCDC. */ | |
744 | __sh_mobile_lcdc_start(priv); | |
745 | ||
746 | /* Setup deferred I/O, tell the board code to enable the panels, and | |
747 | * turn backlight on. | |
748 | */ | |
cfb4f5d1 MD |
749 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
750 | ch = &priv->ch[k]; | |
21bc1f02 MD |
751 | if (!ch->enabled) |
752 | continue; | |
753 | ||
9a217e34 LP |
754 | tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; |
755 | if (ch->ldmt1r_value & LDMT1R_IFM && tmp) { | |
756 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; | |
757 | ch->defio.delay = msecs_to_jiffies(tmp); | |
758 | ch->info->fbdefio = &ch->defio; | |
759 | fb_deferred_io_init(ch->info); | |
760 | } | |
761 | ||
cfb4f5d1 | 762 | board_cfg = &ch->cfg.board_cfg; |
247f9938 | 763 | if (board_cfg->display_on && try_module_get(board_cfg->owner)) { |
c2439398 | 764 | board_cfg->display_on(board_cfg->board_data, ch->info); |
6de9edd5 GL |
765 | module_put(board_cfg->owner); |
766 | } | |
3b0fd9d7 AC |
767 | |
768 | if (ch->bl) { | |
769 | ch->bl->props.power = FB_BLANK_UNBLANK; | |
770 | backlight_update_status(ch->bl); | |
771 | } | |
cfb4f5d1 MD |
772 | } |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
777 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) | |
778 | { | |
779 | struct sh_mobile_lcdc_chan *ch; | |
780 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
781 | int k; | |
782 | ||
2feb075a | 783 | /* clean up deferred io and ask board code to disable panel */ |
cfb4f5d1 MD |
784 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
785 | ch = &priv->ch[k]; | |
21bc1f02 MD |
786 | if (!ch->enabled) |
787 | continue; | |
8564557a | 788 | |
2feb075a MD |
789 | /* deferred io mode: |
790 | * flush frame, and wait for frame end interrupt | |
791 | * clean up deferred io and enable clock | |
792 | */ | |
5ef6b505 | 793 | if (ch->info && ch->info->fbdefio) { |
2feb075a | 794 | ch->frame_end = 0; |
e33afddc | 795 | schedule_delayed_work(&ch->info->deferred_work, 0); |
2feb075a | 796 | wait_event(ch->frame_end_wait, ch->frame_end); |
e33afddc PM |
797 | fb_deferred_io_cleanup(ch->info); |
798 | ch->info->fbdefio = NULL; | |
2feb075a | 799 | sh_mobile_lcdc_clk_on(priv); |
8564557a | 800 | } |
2feb075a | 801 | |
3b0fd9d7 AC |
802 | if (ch->bl) { |
803 | ch->bl->props.power = FB_BLANK_POWERDOWN; | |
804 | backlight_update_status(ch->bl); | |
805 | } | |
806 | ||
2feb075a | 807 | board_cfg = &ch->cfg.board_cfg; |
247f9938 | 808 | if (board_cfg->display_off && try_module_get(board_cfg->owner)) { |
2feb075a | 809 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
810 | module_put(board_cfg->owner); |
811 | } | |
7caa4342 DHG |
812 | |
813 | /* disable the meram */ | |
814 | if (ch->meram_enabled) { | |
815 | struct sh_mobile_meram_cfg *cfg; | |
816 | struct sh_mobile_meram_info *mdev; | |
817 | cfg = ch->cfg.meram_cfg; | |
818 | mdev = priv->meram_dev; | |
819 | mdev->ops->meram_unregister(mdev, cfg); | |
820 | ch->meram_enabled = 0; | |
821 | } | |
822 | ||
cfb4f5d1 MD |
823 | } |
824 | ||
825 | /* stop the lcdc */ | |
8e9bb19e MD |
826 | if (priv->started) { |
827 | sh_mobile_lcdc_start_stop(priv, 0); | |
828 | priv->started = 0; | |
829 | } | |
b51339ff | 830 | |
8564557a MD |
831 | /* stop clocks */ |
832 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
833 | if (priv->ch[k].enabled) | |
834 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
835 | } |
836 | ||
f1f60b5f LP |
837 | /* ----------------------------------------------------------------------------- |
838 | * Frame buffer operations | |
839 | */ | |
cfb4f5d1 MD |
840 | |
841 | static int sh_mobile_lcdc_setcolreg(u_int regno, | |
842 | u_int red, u_int green, u_int blue, | |
843 | u_int transp, struct fb_info *info) | |
844 | { | |
845 | u32 *palette = info->pseudo_palette; | |
846 | ||
847 | if (regno >= PALETTE_NR) | |
848 | return -EINVAL; | |
849 | ||
850 | /* only FB_VISUAL_TRUECOLOR supported */ | |
851 | ||
852 | red >>= 16 - info->var.red.length; | |
853 | green >>= 16 - info->var.green.length; | |
854 | blue >>= 16 - info->var.blue.length; | |
855 | transp >>= 16 - info->var.transp.length; | |
856 | ||
857 | palette[regno] = (red << info->var.red.offset) | | |
858 | (green << info->var.green.offset) | | |
859 | (blue << info->var.blue.offset) | | |
860 | (transp << info->var.transp.offset); | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { | |
866 | .id = "SH Mobile LCDC", | |
867 | .type = FB_TYPE_PACKED_PIXELS, | |
868 | .visual = FB_VISUAL_TRUECOLOR, | |
869 | .accel = FB_ACCEL_NONE, | |
9dd38819 PE |
870 | .xpanstep = 0, |
871 | .ypanstep = 1, | |
872 | .ywrapstep = 0, | |
edd153a3 | 873 | .capabilities = FB_CAP_FOURCC, |
cfb4f5d1 MD |
874 | }; |
875 | ||
8564557a MD |
876 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
877 | const struct fb_fillrect *rect) | |
878 | { | |
879 | sys_fillrect(info, rect); | |
880 | sh_mobile_lcdc_deferred_io_touch(info); | |
881 | } | |
882 | ||
883 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, | |
884 | const struct fb_copyarea *area) | |
885 | { | |
886 | sys_copyarea(info, area); | |
887 | sh_mobile_lcdc_deferred_io_touch(info); | |
888 | } | |
889 | ||
890 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, | |
891 | const struct fb_image *image) | |
892 | { | |
893 | sys_imageblit(info, image); | |
894 | sh_mobile_lcdc_deferred_io_touch(info); | |
895 | } | |
896 | ||
9dd38819 PE |
897 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
898 | struct fb_info *info) | |
899 | { | |
900 | struct sh_mobile_lcdc_chan *ch = info->par; | |
92e1f9a7 PE |
901 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
902 | unsigned long ldrcntr; | |
903 | unsigned long new_pan_offset; | |
53b50314 DHG |
904 | unsigned long base_addr_y, base_addr_c; |
905 | unsigned long c_offset; | |
edd153a3 | 906 | bool yuv = sh_mobile_format_is_yuv(&info->var); |
92e1f9a7 | 907 | |
edd153a3 | 908 | if (!yuv) |
dc1d5ada LP |
909 | new_pan_offset = var->yoffset * info->fix.line_length |
910 | + var->xoffset * (info->var.bits_per_pixel / 8); | |
53b50314 | 911 | else |
dc1d5ada LP |
912 | new_pan_offset = var->yoffset * info->fix.line_length |
913 | + var->xoffset; | |
9dd38819 | 914 | |
92e1f9a7 | 915 | if (new_pan_offset == ch->pan_offset) |
9dd38819 PE |
916 | return 0; /* No change, do nothing */ |
917 | ||
92e1f9a7 | 918 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
9dd38819 | 919 | |
92e1f9a7 | 920 | /* Set the source address for the next refresh */ |
53b50314 | 921 | base_addr_y = ch->dma_handle + new_pan_offset; |
edd153a3 | 922 | if (yuv) { |
53b50314 | 923 | /* Set y offset */ |
dc1d5ada LP |
924 | c_offset = var->yoffset * info->fix.line_length |
925 | * (info->var.bits_per_pixel - 8) / 8; | |
926 | base_addr_c = ch->dma_handle | |
927 | + info->var.xres * info->var.yres_virtual | |
928 | + c_offset; | |
53b50314 | 929 | /* Set x offset */ |
edd153a3 | 930 | if (sh_mobile_format_fourcc(&info->var) == V4L2_PIX_FMT_NV24) |
53b50314 DHG |
931 | base_addr_c += 2 * var->xoffset; |
932 | else | |
933 | base_addr_c += var->xoffset; | |
49d79ba2 | 934 | } |
53b50314 | 935 | |
49d79ba2 | 936 | if (ch->meram_enabled) { |
7caa4342 DHG |
937 | struct sh_mobile_meram_cfg *cfg; |
938 | struct sh_mobile_meram_info *mdev; | |
7caa4342 DHG |
939 | int ret; |
940 | ||
941 | cfg = ch->cfg.meram_cfg; | |
942 | mdev = priv->meram_dev; | |
943 | ret = mdev->ops->meram_update(mdev, cfg, | |
944 | base_addr_y, base_addr_c, | |
49d79ba2 | 945 | &base_addr_y, &base_addr_c); |
7caa4342 DHG |
946 | if (ret) |
947 | return ret; | |
49d79ba2 | 948 | } |
7caa4342 | 949 | |
49d79ba2 LP |
950 | ch->base_addr_y = base_addr_y; |
951 | ch->base_addr_c = base_addr_c; | |
7caa4342 | 952 | |
49d79ba2 | 953 | lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); |
edd153a3 | 954 | if (yuv) |
49d79ba2 | 955 | lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); |
53b50314 | 956 | |
92e1f9a7 PE |
957 | if (lcdc_chan_is_sublcd(ch)) |
958 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); | |
959 | else | |
960 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); | |
961 | ||
962 | ch->pan_offset = new_pan_offset; | |
963 | ||
964 | sh_mobile_lcdc_deferred_io_touch(info); | |
9dd38819 PE |
965 | |
966 | return 0; | |
967 | } | |
968 | ||
40331b21 PE |
969 | static int sh_mobile_wait_for_vsync(struct fb_info *info) |
970 | { | |
971 | struct sh_mobile_lcdc_chan *ch = info->par; | |
972 | unsigned long ldintr; | |
973 | int ret; | |
974 | ||
dc48665f LP |
975 | /* Enable VSync End interrupt and be careful not to acknowledge any |
976 | * pending interrupt. | |
977 | */ | |
40331b21 | 978 | ldintr = lcdc_read(ch->lcdc, _LDINTR); |
dc48665f | 979 | ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK; |
40331b21 PE |
980 | lcdc_write(ch->lcdc, _LDINTR, ldintr); |
981 | ||
982 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, | |
983 | msecs_to_jiffies(100)); | |
984 | if (!ret) | |
985 | return -ETIMEDOUT; | |
986 | ||
987 | return 0; | |
988 | } | |
989 | ||
990 | static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd, | |
991 | unsigned long arg) | |
992 | { | |
993 | int retval; | |
994 | ||
995 | switch (cmd) { | |
996 | case FBIO_WAITFORVSYNC: | |
997 | retval = sh_mobile_wait_for_vsync(info); | |
998 | break; | |
999 | ||
1000 | default: | |
1001 | retval = -ENOIOCTLCMD; | |
1002 | break; | |
1003 | } | |
1004 | return retval; | |
1005 | } | |
1006 | ||
dd210503 GL |
1007 | static void sh_mobile_fb_reconfig(struct fb_info *info) |
1008 | { | |
1009 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1010 | struct fb_videomode mode1, mode2; | |
1011 | struct fb_event event; | |
1012 | int evnt = FB_EVENT_MODE_CHANGE_ALL; | |
1013 | ||
1014 | if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) | |
1015 | /* More framebuffer users are active */ | |
1016 | return; | |
1017 | ||
1018 | fb_var_to_videomode(&mode1, &ch->display_var); | |
1019 | fb_var_to_videomode(&mode2, &info->var); | |
1020 | ||
1021 | if (fb_mode_is_equal(&mode1, &mode2)) | |
1022 | return; | |
1023 | ||
1024 | /* Display has been re-plugged, framebuffer is free now, reconfigure */ | |
1025 | if (fb_set_var(info, &ch->display_var) < 0) | |
1026 | /* Couldn't reconfigure, hopefully, can continue as before */ | |
1027 | return; | |
1028 | ||
dd210503 GL |
1029 | /* |
1030 | * fb_set_var() calls the notifier change internally, only if | |
1031 | * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a | |
1032 | * user event, we have to call the chain ourselves. | |
1033 | */ | |
1034 | event.info = info; | |
cc267ec5 | 1035 | event.data = &mode1; |
dd210503 GL |
1036 | fb_notifier_call_chain(evnt, &event); |
1037 | } | |
1038 | ||
1039 | /* | |
1040 | * Locking: both .fb_release() and .fb_open() are called with info->lock held if | |
1041 | * user == 1, or with console sem held, if user == 0. | |
1042 | */ | |
1043 | static int sh_mobile_release(struct fb_info *info, int user) | |
1044 | { | |
1045 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1046 | ||
1047 | mutex_lock(&ch->open_lock); | |
1048 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
1049 | ||
1050 | ch->use_count--; | |
1051 | ||
1052 | /* Nothing to reconfigure, when called from fbcon */ | |
1053 | if (user) { | |
ac751efa | 1054 | console_lock(); |
dd210503 | 1055 | sh_mobile_fb_reconfig(info); |
ac751efa | 1056 | console_unlock(); |
dd210503 GL |
1057 | } |
1058 | ||
1059 | mutex_unlock(&ch->open_lock); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static int sh_mobile_open(struct fb_info *info, int user) | |
1065 | { | |
1066 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1067 | ||
1068 | mutex_lock(&ch->open_lock); | |
1069 | ch->use_count++; | |
1070 | ||
1071 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
1072 | mutex_unlock(&ch->open_lock); | |
1073 | ||
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
1078 | { | |
1079 | struct sh_mobile_lcdc_chan *ch = info->par; | |
417d4827 | 1080 | struct sh_mobile_lcdc_priv *p = ch->lcdc; |
03862194 LP |
1081 | unsigned int best_dist = (unsigned int)-1; |
1082 | unsigned int best_xres = 0; | |
1083 | unsigned int best_yres = 0; | |
1084 | unsigned int i; | |
dd210503 | 1085 | |
03862194 | 1086 | if (var->xres > MAX_XRES || var->yres > MAX_YRES) |
dd210503 | 1087 | return -EINVAL; |
03862194 LP |
1088 | |
1089 | /* If board code provides us with a list of available modes, make sure | |
1090 | * we use one of them. Find the mode closest to the requested one. The | |
1091 | * distance between two modes is defined as the size of the | |
1092 | * non-overlapping parts of the two rectangles. | |
1093 | */ | |
1094 | for (i = 0; i < ch->cfg.num_cfg; ++i) { | |
1095 | const struct fb_videomode *mode = &ch->cfg.lcd_cfg[i]; | |
1096 | unsigned int dist; | |
1097 | ||
1098 | /* We can only round up. */ | |
1099 | if (var->xres > mode->xres || var->yres > mode->yres) | |
1100 | continue; | |
1101 | ||
1102 | dist = var->xres * var->yres + mode->xres * mode->yres | |
1103 | - 2 * min(var->xres, mode->xres) | |
1104 | * min(var->yres, mode->yres); | |
1105 | ||
1106 | if (dist < best_dist) { | |
1107 | best_xres = mode->xres; | |
1108 | best_yres = mode->yres; | |
1109 | best_dist = dist; | |
1110 | } | |
dd210503 | 1111 | } |
417d4827 | 1112 | |
03862194 LP |
1113 | /* If no available mode can be used, return an error. */ |
1114 | if (ch->cfg.num_cfg != 0) { | |
1115 | if (best_dist == (unsigned int)-1) | |
1116 | return -EINVAL; | |
1117 | ||
1118 | var->xres = best_xres; | |
1119 | var->yres = best_yres; | |
1120 | } | |
1121 | ||
1122 | /* Make sure the virtual resolution is at least as big as the visible | |
1123 | * resolution. | |
1124 | */ | |
1125 | if (var->xres_virtual < var->xres) | |
1126 | var->xres_virtual = var->xres; | |
1127 | if (var->yres_virtual < var->yres) | |
1128 | var->yres_virtual = var->yres; | |
1129 | ||
edd153a3 LP |
1130 | if (sh_mobile_format_is_fourcc(var)) { |
1131 | switch (var->grayscale) { | |
1132 | case V4L2_PIX_FMT_NV12: | |
1133 | case V4L2_PIX_FMT_NV21: | |
1134 | var->bits_per_pixel = 12; | |
1135 | break; | |
1136 | case V4L2_PIX_FMT_RGB565: | |
1137 | case V4L2_PIX_FMT_NV16: | |
1138 | case V4L2_PIX_FMT_NV61: | |
1139 | var->bits_per_pixel = 16; | |
1140 | break; | |
1141 | case V4L2_PIX_FMT_BGR24: | |
1142 | case V4L2_PIX_FMT_NV24: | |
1143 | case V4L2_PIX_FMT_NV42: | |
1144 | var->bits_per_pixel = 24; | |
1145 | break; | |
1146 | case V4L2_PIX_FMT_BGR32: | |
1147 | var->bits_per_pixel = 32; | |
1148 | break; | |
1149 | default: | |
1150 | return -EINVAL; | |
1151 | } | |
1152 | ||
1153 | /* Default to RGB and JPEG color-spaces for RGB and YUV formats | |
1154 | * respectively. | |
1155 | */ | |
1156 | if (!sh_mobile_format_is_yuv(var)) | |
1157 | var->colorspace = V4L2_COLORSPACE_SRGB; | |
1158 | else if (var->colorspace != V4L2_COLORSPACE_REC709) | |
1159 | var->colorspace = V4L2_COLORSPACE_JPEG; | |
1160 | } else { | |
1161 | if (var->bits_per_pixel <= 16) { /* RGB 565 */ | |
1162 | var->bits_per_pixel = 16; | |
1163 | var->red.offset = 11; | |
1164 | var->red.length = 5; | |
1165 | var->green.offset = 5; | |
1166 | var->green.length = 6; | |
1167 | var->blue.offset = 0; | |
1168 | var->blue.length = 5; | |
1169 | var->transp.offset = 0; | |
1170 | var->transp.length = 0; | |
1171 | } else if (var->bits_per_pixel <= 24) { /* RGB 888 */ | |
1172 | var->bits_per_pixel = 24; | |
1173 | var->red.offset = 16; | |
1174 | var->red.length = 8; | |
1175 | var->green.offset = 8; | |
1176 | var->green.length = 8; | |
1177 | var->blue.offset = 0; | |
1178 | var->blue.length = 8; | |
1179 | var->transp.offset = 0; | |
1180 | var->transp.length = 0; | |
1181 | } else if (var->bits_per_pixel <= 32) { /* RGBA 888 */ | |
1182 | var->bits_per_pixel = 32; | |
1183 | var->red.offset = 16; | |
1184 | var->red.length = 8; | |
1185 | var->green.offset = 8; | |
1186 | var->green.length = 8; | |
1187 | var->blue.offset = 0; | |
1188 | var->blue.length = 8; | |
1189 | var->transp.offset = 24; | |
1190 | var->transp.length = 8; | |
1191 | } else | |
1192 | return -EINVAL; | |
417d4827 | 1193 | |
edd153a3 LP |
1194 | var->red.msb_right = 0; |
1195 | var->green.msb_right = 0; | |
1196 | var->blue.msb_right = 0; | |
1197 | var->transp.msb_right = 0; | |
1198 | } | |
03862194 LP |
1199 | |
1200 | /* Make sure we don't exceed our allocated memory. */ | |
1201 | if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 > | |
1202 | info->fix.smem_len) | |
1203 | return -EINVAL; | |
1204 | ||
edd153a3 LP |
1205 | /* only accept the forced_fourcc for dual channel configurations */ |
1206 | if (p->forced_fourcc && | |
1207 | p->forced_fourcc != sh_mobile_format_fourcc(var)) | |
417d4827 | 1208 | return -EINVAL; |
417d4827 | 1209 | |
dd210503 GL |
1210 | return 0; |
1211 | } | |
40331b21 | 1212 | |
ed5bebf2 LP |
1213 | static int sh_mobile_set_par(struct fb_info *info) |
1214 | { | |
1215 | struct sh_mobile_lcdc_chan *ch = info->par; | |
91fba48d | 1216 | u32 line_length = info->fix.line_length; |
ed5bebf2 LP |
1217 | int ret; |
1218 | ||
1219 | sh_mobile_lcdc_stop(ch->lcdc); | |
91fba48d | 1220 | |
edd153a3 | 1221 | if (sh_mobile_format_is_yuv(&info->var)) |
91fba48d LP |
1222 | info->fix.line_length = info->var.xres; |
1223 | else | |
1224 | info->fix.line_length = info->var.xres | |
1225 | * info->var.bits_per_pixel / 8; | |
1226 | ||
ed5bebf2 | 1227 | ret = sh_mobile_lcdc_start(ch->lcdc); |
91fba48d | 1228 | if (ret < 0) { |
ed5bebf2 | 1229 | dev_err(info->dev, "%s: unable to restart LCDC\n", __func__); |
91fba48d LP |
1230 | info->fix.line_length = line_length; |
1231 | } | |
ed5bebf2 | 1232 | |
edd153a3 LP |
1233 | if (sh_mobile_format_is_fourcc(&info->var)) { |
1234 | info->fix.type = FB_TYPE_FOURCC; | |
1235 | info->fix.visual = FB_VISUAL_FOURCC; | |
1236 | } else { | |
1237 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
1238 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
1239 | } | |
1240 | ||
ed5bebf2 LP |
1241 | return ret; |
1242 | } | |
1243 | ||
8857b9aa AC |
1244 | /* |
1245 | * Screen blanking. Behavior is as follows: | |
1246 | * FB_BLANK_UNBLANK: screen unblanked, clocks enabled | |
1247 | * FB_BLANK_NORMAL: screen blanked, clocks enabled | |
1248 | * FB_BLANK_VSYNC, | |
1249 | * FB_BLANK_HSYNC, | |
1250 | * FB_BLANK_POWEROFF: screen blanked, clocks disabled | |
1251 | */ | |
1252 | static int sh_mobile_lcdc_blank(int blank, struct fb_info *info) | |
1253 | { | |
1254 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1255 | struct sh_mobile_lcdc_priv *p = ch->lcdc; | |
1256 | ||
1257 | /* blank the screen? */ | |
1258 | if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) { | |
1259 | struct fb_fillrect rect = { | |
1260 | .width = info->var.xres, | |
1261 | .height = info->var.yres, | |
1262 | }; | |
1263 | sh_mobile_lcdc_fillrect(info, &rect); | |
1264 | } | |
1265 | /* turn clocks on? */ | |
1266 | if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) { | |
1267 | sh_mobile_lcdc_clk_on(p); | |
1268 | } | |
1269 | /* turn clocks off? */ | |
1270 | if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) { | |
1271 | /* make sure the screen is updated with the black fill before | |
1272 | * switching the clocks off. one vsync is not enough since | |
1273 | * blanking may occur in the middle of a refresh. deferred io | |
1274 | * mode will reenable the clocks and update the screen in time, | |
1275 | * so it does not need this. */ | |
1276 | if (!info->fbdefio) { | |
1277 | sh_mobile_wait_for_vsync(info); | |
1278 | sh_mobile_wait_for_vsync(info); | |
1279 | } | |
1280 | sh_mobile_lcdc_clk_off(p); | |
1281 | } | |
1282 | ||
1283 | ch->blank_status = blank; | |
1284 | return 0; | |
1285 | } | |
1286 | ||
cfb4f5d1 | 1287 | static struct fb_ops sh_mobile_lcdc_ops = { |
9dd38819 | 1288 | .owner = THIS_MODULE, |
cfb4f5d1 | 1289 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2540c111 MD |
1290 | .fb_read = fb_sys_read, |
1291 | .fb_write = fb_sys_write, | |
8564557a MD |
1292 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
1293 | .fb_copyarea = sh_mobile_lcdc_copyarea, | |
1294 | .fb_imageblit = sh_mobile_lcdc_imageblit, | |
8857b9aa | 1295 | .fb_blank = sh_mobile_lcdc_blank, |
9dd38819 | 1296 | .fb_pan_display = sh_mobile_fb_pan_display, |
40331b21 | 1297 | .fb_ioctl = sh_mobile_ioctl, |
dd210503 GL |
1298 | .fb_open = sh_mobile_open, |
1299 | .fb_release = sh_mobile_release, | |
1300 | .fb_check_var = sh_mobile_check_var, | |
ed5bebf2 | 1301 | .fb_set_par = sh_mobile_set_par, |
cfb4f5d1 MD |
1302 | }; |
1303 | ||
f1f60b5f LP |
1304 | /* ----------------------------------------------------------------------------- |
1305 | * Backlight | |
1306 | */ | |
1307 | ||
3b0fd9d7 AC |
1308 | static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev) |
1309 | { | |
1310 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); | |
1311 | struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg; | |
1312 | int brightness = bdev->props.brightness; | |
1313 | ||
1314 | if (bdev->props.power != FB_BLANK_UNBLANK || | |
1315 | bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) | |
1316 | brightness = 0; | |
1317 | ||
1318 | return cfg->set_brightness(cfg->board_data, brightness); | |
1319 | } | |
1320 | ||
1321 | static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev) | |
1322 | { | |
1323 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); | |
1324 | struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg; | |
1325 | ||
1326 | return cfg->get_brightness(cfg->board_data); | |
1327 | } | |
1328 | ||
1329 | static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev, | |
1330 | struct fb_info *info) | |
1331 | { | |
1332 | return (info->bl_dev == bdev); | |
1333 | } | |
1334 | ||
1335 | static struct backlight_ops sh_mobile_lcdc_bl_ops = { | |
1336 | .options = BL_CORE_SUSPENDRESUME, | |
1337 | .update_status = sh_mobile_lcdc_update_bl, | |
1338 | .get_brightness = sh_mobile_lcdc_get_brightness, | |
1339 | .check_fb = sh_mobile_lcdc_check_fb, | |
1340 | }; | |
1341 | ||
1342 | static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent, | |
1343 | struct sh_mobile_lcdc_chan *ch) | |
1344 | { | |
1345 | struct backlight_device *bl; | |
1346 | ||
1347 | bl = backlight_device_register(ch->cfg.bl_info.name, parent, ch, | |
1348 | &sh_mobile_lcdc_bl_ops, NULL); | |
beee1f20 DC |
1349 | if (IS_ERR(bl)) { |
1350 | dev_err(parent, "unable to register backlight device: %ld\n", | |
1351 | PTR_ERR(bl)); | |
3b0fd9d7 AC |
1352 | return NULL; |
1353 | } | |
1354 | ||
1355 | bl->props.max_brightness = ch->cfg.bl_info.max_brightness; | |
1356 | bl->props.brightness = bl->props.max_brightness; | |
1357 | backlight_update_status(bl); | |
1358 | ||
1359 | return bl; | |
1360 | } | |
1361 | ||
1362 | static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev) | |
1363 | { | |
1364 | backlight_device_unregister(bdev); | |
1365 | } | |
1366 | ||
f1f60b5f LP |
1367 | /* ----------------------------------------------------------------------------- |
1368 | * Power management | |
1369 | */ | |
1370 | ||
2feb075a MD |
1371 | static int sh_mobile_lcdc_suspend(struct device *dev) |
1372 | { | |
1373 | struct platform_device *pdev = to_platform_device(dev); | |
1374 | ||
1375 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); | |
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | static int sh_mobile_lcdc_resume(struct device *dev) | |
1380 | { | |
1381 | struct platform_device *pdev = to_platform_device(dev); | |
1382 | ||
1383 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); | |
1384 | } | |
1385 | ||
0246c471 MD |
1386 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
1387 | { | |
1388 | struct platform_device *pdev = to_platform_device(dev); | |
2427bb24 | 1389 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
0246c471 MD |
1390 | |
1391 | /* turn off LCDC hardware */ | |
2427bb24 LP |
1392 | lcdc_write(priv, _LDCNT1R, 0); |
1393 | ||
0246c471 MD |
1394 | return 0; |
1395 | } | |
1396 | ||
1397 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) | |
1398 | { | |
1399 | struct platform_device *pdev = to_platform_device(dev); | |
2427bb24 | 1400 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); |
0246c471 | 1401 | |
2427bb24 | 1402 | __sh_mobile_lcdc_start(priv); |
0246c471 MD |
1403 | |
1404 | return 0; | |
1405 | } | |
1406 | ||
47145210 | 1407 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2feb075a MD |
1408 | .suspend = sh_mobile_lcdc_suspend, |
1409 | .resume = sh_mobile_lcdc_resume, | |
0246c471 MD |
1410 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
1411 | .runtime_resume = sh_mobile_lcdc_runtime_resume, | |
2feb075a MD |
1412 | }; |
1413 | ||
f1f60b5f LP |
1414 | /* ----------------------------------------------------------------------------- |
1415 | * Framebuffer notifier | |
1416 | */ | |
1417 | ||
6de9edd5 | 1418 | /* locking: called with info->lock held */ |
6011bdea GL |
1419 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
1420 | unsigned long action, void *data) | |
1421 | { | |
1422 | struct fb_event *event = data; | |
1423 | struct fb_info *info = event->info; | |
1424 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1425 | struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; | |
6011bdea GL |
1426 | |
1427 | if (&ch->lcdc->notifier != nb) | |
baf16374 | 1428 | return NOTIFY_DONE; |
6011bdea GL |
1429 | |
1430 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", | |
1431 | __func__, action, event->data); | |
1432 | ||
1433 | switch(action) { | |
1434 | case FB_EVENT_SUSPEND: | |
247f9938 | 1435 | if (board_cfg->display_off && try_module_get(board_cfg->owner)) { |
6011bdea | 1436 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
1437 | module_put(board_cfg->owner); |
1438 | } | |
afe417c0 | 1439 | sh_mobile_lcdc_stop(ch->lcdc); |
6011bdea GL |
1440 | break; |
1441 | case FB_EVENT_RESUME: | |
dd210503 GL |
1442 | mutex_lock(&ch->open_lock); |
1443 | sh_mobile_fb_reconfig(info); | |
1444 | mutex_unlock(&ch->open_lock); | |
6011bdea GL |
1445 | |
1446 | /* HDMI must be enabled before LCDC configuration */ | |
247f9938 | 1447 | if (board_cfg->display_on && try_module_get(board_cfg->owner)) { |
dd210503 | 1448 | board_cfg->display_on(board_cfg->board_data, info); |
6de9edd5 | 1449 | module_put(board_cfg->owner); |
6011bdea GL |
1450 | } |
1451 | ||
ebe5e12d | 1452 | sh_mobile_lcdc_start(ch->lcdc); |
6011bdea GL |
1453 | } |
1454 | ||
baf16374 | 1455 | return NOTIFY_OK; |
6011bdea GL |
1456 | } |
1457 | ||
f1f60b5f LP |
1458 | /* ----------------------------------------------------------------------------- |
1459 | * Probe/remove and driver init/exit | |
1460 | */ | |
1461 | ||
217e9c43 | 1462 | static const struct fb_videomode default_720p __devinitconst = { |
f1f60b5f LP |
1463 | .name = "HDMI 720p", |
1464 | .xres = 1280, | |
1465 | .yres = 720, | |
1466 | ||
1467 | .left_margin = 220, | |
1468 | .right_margin = 110, | |
1469 | .hsync_len = 40, | |
1470 | ||
1471 | .upper_margin = 20, | |
1472 | .lower_margin = 5, | |
1473 | .vsync_len = 5, | |
1474 | ||
1475 | .pixclock = 13468, | |
1476 | .refresh = 60, | |
1477 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, | |
1478 | }; | |
1479 | ||
b4bee692 LP |
1480 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) |
1481 | { | |
1482 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); | |
1483 | struct fb_info *info; | |
1484 | int i; | |
1485 | ||
1486 | fb_unregister_client(&priv->notifier); | |
1487 | ||
1488 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) | |
1489 | if (priv->ch[i].info && priv->ch[i].info->dev) | |
1490 | unregister_framebuffer(priv->ch[i].info); | |
1491 | ||
1492 | sh_mobile_lcdc_stop(priv); | |
1493 | ||
1494 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
1495 | info = priv->ch[i].info; | |
1496 | ||
1497 | if (!info || !info->device) | |
1498 | continue; | |
1499 | ||
1500 | if (priv->ch[i].sglist) | |
1501 | vfree(priv->ch[i].sglist); | |
1502 | ||
1503 | if (info->screen_base) | |
1504 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
1505 | info->screen_base, | |
1506 | priv->ch[i].dma_handle); | |
1507 | fb_dealloc_cmap(&info->cmap); | |
1508 | framebuffer_release(info); | |
1509 | } | |
1510 | ||
1511 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
1512 | if (priv->ch[i].bl) | |
1513 | sh_mobile_lcdc_bl_remove(priv->ch[i].bl); | |
1514 | } | |
1515 | ||
1516 | if (priv->dot_clk) | |
1517 | clk_put(priv->dot_clk); | |
1518 | ||
1519 | if (priv->dev) | |
1520 | pm_runtime_disable(priv->dev); | |
1521 | ||
1522 | if (priv->base) | |
1523 | iounmap(priv->base); | |
1524 | ||
1525 | if (priv->irq) | |
1526 | free_irq(priv->irq, priv); | |
1527 | kfree(priv); | |
1528 | return 0; | |
1529 | } | |
cfb4f5d1 | 1530 | |
217e9c43 | 1531 | static int __devinit sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) |
f1f60b5f LP |
1532 | { |
1533 | int interface_type = ch->cfg.interface_type; | |
1534 | ||
1535 | switch (interface_type) { | |
1536 | case RGB8: | |
1537 | case RGB9: | |
1538 | case RGB12A: | |
1539 | case RGB12B: | |
1540 | case RGB16: | |
1541 | case RGB18: | |
1542 | case RGB24: | |
1543 | case SYS8A: | |
1544 | case SYS8B: | |
1545 | case SYS8C: | |
1546 | case SYS8D: | |
1547 | case SYS9: | |
1548 | case SYS12: | |
1549 | case SYS16A: | |
1550 | case SYS16B: | |
1551 | case SYS16C: | |
1552 | case SYS18: | |
1553 | case SYS24: | |
1554 | break; | |
1555 | default: | |
1556 | return -EINVAL; | |
1557 | } | |
1558 | ||
1559 | /* SUBLCD only supports SYS interface */ | |
1560 | if (lcdc_chan_is_sublcd(ch)) { | |
1561 | if (!(interface_type & LDMT1R_IFM)) | |
1562 | return -EINVAL; | |
1563 | ||
1564 | interface_type &= ~LDMT1R_IFM; | |
1565 | } | |
1566 | ||
1567 | ch->ldmt1r_value = interface_type; | |
1568 | return 0; | |
1569 | } | |
1570 | ||
3ce05599 LP |
1571 | static int __devinit sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch, |
1572 | struct device *dev) | |
cfb4f5d1 | 1573 | { |
3ce05599 LP |
1574 | struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg; |
1575 | const struct fb_videomode *max_mode; | |
1576 | const struct fb_videomode *mode; | |
1577 | struct fb_var_screeninfo *var; | |
cfb4f5d1 | 1578 | struct fb_info *info; |
3ce05599 LP |
1579 | unsigned int max_size; |
1580 | int num_cfg; | |
1581 | void *buf; | |
1582 | int ret; | |
1583 | int i; | |
1584 | ||
a67472ad LP |
1585 | mutex_init(&ch->open_lock); |
1586 | ||
1587 | /* Allocate the frame buffer device. */ | |
3ce05599 LP |
1588 | ch->info = framebuffer_alloc(0, dev); |
1589 | if (!ch->info) { | |
1590 | dev_err(dev, "unable to allocate fb_info\n"); | |
1591 | return -ENOMEM; | |
1592 | } | |
1593 | ||
1594 | info = ch->info; | |
3ce05599 LP |
1595 | info->fbops = &sh_mobile_lcdc_ops; |
1596 | info->par = ch; | |
a67472ad LP |
1597 | info->pseudo_palette = &ch->pseudo_palette; |
1598 | info->flags = FBINFO_FLAG_DEFAULT; | |
3ce05599 LP |
1599 | |
1600 | /* Iterate through the modes to validate them and find the highest | |
1601 | * resolution. | |
1602 | */ | |
1603 | max_mode = NULL; | |
1604 | max_size = 0; | |
1605 | ||
1606 | for (i = 0, mode = cfg->lcd_cfg; i < cfg->num_cfg; i++, mode++) { | |
1607 | unsigned int size = mode->yres * mode->xres; | |
1608 | ||
edd153a3 LP |
1609 | /* NV12/NV21 buffers must have even number of lines */ |
1610 | if ((cfg->fourcc == V4L2_PIX_FMT_NV12 || | |
1611 | cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) { | |
3ce05599 LP |
1612 | dev_err(dev, "yres must be multiple of 2 for YCbCr420 " |
1613 | "mode.\n"); | |
1614 | return -EINVAL; | |
1615 | } | |
1616 | ||
1617 | if (size > max_size) { | |
1618 | max_mode = mode; | |
1619 | max_size = size; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | if (!max_size) | |
1624 | max_size = MAX_XRES * MAX_YRES; | |
1625 | else | |
1626 | dev_dbg(dev, "Found largest videomode %ux%u\n", | |
1627 | max_mode->xres, max_mode->yres); | |
1628 | ||
a67472ad | 1629 | /* Create the mode list. */ |
3ce05599 LP |
1630 | if (cfg->lcd_cfg == NULL) { |
1631 | mode = &default_720p; | |
1632 | num_cfg = 1; | |
1633 | } else { | |
1634 | mode = cfg->lcd_cfg; | |
1635 | num_cfg = cfg->num_cfg; | |
1636 | } | |
1637 | ||
1638 | fb_videomode_to_modelist(mode, num_cfg, &info->modelist); | |
1639 | ||
a67472ad LP |
1640 | /* Initialize variable screen information using the first mode as |
1641 | * default. The default Y virtual resolution is twice the panel size to | |
1642 | * allow for double-buffering. | |
1643 | */ | |
1644 | var = &info->var; | |
3ce05599 LP |
1645 | fb_videomode_to_var(var, mode); |
1646 | var->width = cfg->lcd_size_cfg.width; | |
1647 | var->height = cfg->lcd_size_cfg.height; | |
3ce05599 LP |
1648 | var->yres_virtual = var->yres * 2; |
1649 | var->activate = FB_ACTIVATE_NOW; | |
1650 | ||
edd153a3 LP |
1651 | switch (cfg->fourcc) { |
1652 | case V4L2_PIX_FMT_RGB565: | |
1653 | var->bits_per_pixel = 16; | |
1654 | break; | |
1655 | case V4L2_PIX_FMT_BGR24: | |
1656 | var->bits_per_pixel = 24; | |
1657 | break; | |
1658 | case V4L2_PIX_FMT_BGR32: | |
1659 | var->bits_per_pixel = 32; | |
1660 | break; | |
1661 | default: | |
1662 | var->grayscale = cfg->fourcc; | |
1663 | break; | |
1664 | } | |
1665 | ||
1666 | /* Make sure the memory size check won't fail. smem_len is initialized | |
1667 | * later based on var. | |
1668 | */ | |
1669 | info->fix.smem_len = UINT_MAX; | |
a67472ad | 1670 | ret = sh_mobile_check_var(var, info); |
3ce05599 LP |
1671 | if (ret) |
1672 | return ret; | |
1673 | ||
edd153a3 LP |
1674 | max_size = max_size * var->bits_per_pixel / 8 * 2; |
1675 | ||
a67472ad | 1676 | /* Allocate frame buffer memory and color map. */ |
edd153a3 | 1677 | buf = dma_alloc_coherent(dev, max_size, &ch->dma_handle, GFP_KERNEL); |
3ce05599 LP |
1678 | if (!buf) { |
1679 | dev_err(dev, "unable to allocate buffer\n"); | |
1680 | return -ENOMEM; | |
1681 | } | |
1682 | ||
3ce05599 LP |
1683 | ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); |
1684 | if (ret < 0) { | |
1685 | dev_err(dev, "unable to allocate cmap\n"); | |
edd153a3 | 1686 | dma_free_coherent(dev, max_size, buf, ch->dma_handle); |
3ce05599 LP |
1687 | return ret; |
1688 | } | |
1689 | ||
edd153a3 LP |
1690 | /* Initialize fixed screen information. Restrict pan to 2 lines steps |
1691 | * for NV12 and NV21. | |
1692 | */ | |
1693 | info->fix = sh_mobile_lcdc_fix; | |
3ce05599 | 1694 | info->fix.smem_start = ch->dma_handle; |
edd153a3 LP |
1695 | info->fix.smem_len = max_size; |
1696 | if (cfg->fourcc == V4L2_PIX_FMT_NV12 || | |
1697 | cfg->fourcc == V4L2_PIX_FMT_NV21) | |
1698 | info->fix.ypanstep = 2; | |
1699 | ||
1700 | if (sh_mobile_format_is_yuv(var)) { | |
3ce05599 | 1701 | info->fix.line_length = var->xres; |
edd153a3 LP |
1702 | info->fix.visual = FB_VISUAL_FOURCC; |
1703 | } else { | |
1704 | info->fix.line_length = var->xres * var->bits_per_pixel / 8; | |
1705 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
1706 | } | |
3ce05599 LP |
1707 | |
1708 | info->screen_base = buf; | |
1709 | info->device = dev; | |
1710 | ch->display_var = *var; | |
1711 | ||
1712 | return 0; | |
1713 | } | |
1714 | ||
1715 | static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) | |
1716 | { | |
01ac25b5 | 1717 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
3ce05599 | 1718 | struct sh_mobile_lcdc_priv *priv; |
cfb4f5d1 | 1719 | struct resource *res; |
3ce05599 | 1720 | int num_channels; |
cfb4f5d1 | 1721 | int error; |
3ce05599 | 1722 | int i; |
cfb4f5d1 | 1723 | |
01ac25b5 | 1724 | if (!pdata) { |
cfb4f5d1 | 1725 | dev_err(&pdev->dev, "no platform data defined\n"); |
8bed9055 | 1726 | return -EINVAL; |
cfb4f5d1 MD |
1727 | } |
1728 | ||
1729 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
8564557a MD |
1730 | i = platform_get_irq(pdev, 0); |
1731 | if (!res || i < 0) { | |
1732 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
8bed9055 | 1733 | return -ENOENT; |
cfb4f5d1 MD |
1734 | } |
1735 | ||
1736 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
1737 | if (!priv) { | |
1738 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
8bed9055 | 1739 | return -ENOMEM; |
cfb4f5d1 MD |
1740 | } |
1741 | ||
8bed9055 GL |
1742 | platform_set_drvdata(pdev, priv); |
1743 | ||
f8798ccb | 1744 | error = request_irq(i, sh_mobile_lcdc_irq, 0, |
7ad33e74 | 1745 | dev_name(&pdev->dev), priv); |
8564557a MD |
1746 | if (error) { |
1747 | dev_err(&pdev->dev, "unable to request irq\n"); | |
1748 | goto err1; | |
1749 | } | |
1750 | ||
1751 | priv->irq = i; | |
5ef6b505 | 1752 | atomic_set(&priv->hw_usecnt, -1); |
cfb4f5d1 | 1753 | |
3ce05599 LP |
1754 | for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) { |
1755 | struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels; | |
cfb4f5d1 | 1756 | |
01ac25b5 GL |
1757 | ch->lcdc = priv; |
1758 | memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i])); | |
cfb4f5d1 | 1759 | |
01ac25b5 | 1760 | error = sh_mobile_lcdc_check_interface(ch); |
cfb4f5d1 MD |
1761 | if (error) { |
1762 | dev_err(&pdev->dev, "unsupported interface type\n"); | |
1763 | goto err1; | |
1764 | } | |
01ac25b5 GL |
1765 | init_waitqueue_head(&ch->frame_end_wait); |
1766 | init_completion(&ch->vsync_completion); | |
1767 | ch->pan_offset = 0; | |
cfb4f5d1 | 1768 | |
3b0fd9d7 AC |
1769 | /* probe the backlight is there is one defined */ |
1770 | if (ch->cfg.bl_info.max_brightness) | |
1771 | ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch); | |
1772 | ||
cfb4f5d1 MD |
1773 | switch (pdata->ch[i].chan) { |
1774 | case LCDC_CHAN_MAINLCD: | |
ce1c0b08 | 1775 | ch->enabled = LDCNT2R_ME; |
01ac25b5 | 1776 | ch->reg_offs = lcdc_offs_mainlcd; |
3ce05599 | 1777 | num_channels++; |
cfb4f5d1 MD |
1778 | break; |
1779 | case LCDC_CHAN_SUBLCD: | |
ce1c0b08 | 1780 | ch->enabled = LDCNT2R_SE; |
01ac25b5 | 1781 | ch->reg_offs = lcdc_offs_sublcd; |
3ce05599 | 1782 | num_channels++; |
cfb4f5d1 MD |
1783 | break; |
1784 | } | |
1785 | } | |
1786 | ||
3ce05599 | 1787 | if (!num_channels) { |
cfb4f5d1 MD |
1788 | dev_err(&pdev->dev, "no channels defined\n"); |
1789 | error = -EINVAL; | |
1790 | goto err1; | |
1791 | } | |
1792 | ||
edd153a3 | 1793 | /* for dual channel LCDC (MAIN + SUB) force shared format setting */ |
3ce05599 | 1794 | if (num_channels == 2) |
edd153a3 | 1795 | priv->forced_fourcc = pdata->ch[0].fourcc; |
417d4827 | 1796 | |
dba6f385 GL |
1797 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
1798 | if (!priv->base) | |
1799 | goto err1; | |
1800 | ||
b51339ff | 1801 | error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); |
cfb4f5d1 MD |
1802 | if (error) { |
1803 | dev_err(&pdev->dev, "unable to setup clocks\n"); | |
1804 | goto err1; | |
1805 | } | |
1806 | ||
7caa4342 DHG |
1807 | priv->meram_dev = pdata->meram_dev; |
1808 | ||
3ce05599 | 1809 | for (i = 0; i < num_channels; i++) { |
01ac25b5 | 1810 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
c44f9f76 | 1811 | |
3ce05599 | 1812 | error = sh_mobile_lcdc_channel_init(ch, &pdev->dev); |
cfb4f5d1 | 1813 | if (error) |
3ce05599 | 1814 | goto err1; |
cfb4f5d1 MD |
1815 | } |
1816 | ||
cfb4f5d1 MD |
1817 | error = sh_mobile_lcdc_start(priv); |
1818 | if (error) { | |
1819 | dev_err(&pdev->dev, "unable to start hardware\n"); | |
1820 | goto err1; | |
1821 | } | |
1822 | ||
3ce05599 | 1823 | for (i = 0; i < num_channels; i++) { |
1c6a307a | 1824 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
3ce05599 | 1825 | struct fb_info *info = ch->info; |
1c6a307a PM |
1826 | |
1827 | if (info->fbdefio) { | |
8bed9055 | 1828 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
1c6a307a | 1829 | info->fix.smem_len >> PAGE_SHIFT); |
8bed9055 | 1830 | if (!ch->sglist) { |
1c6a307a PM |
1831 | dev_err(&pdev->dev, "cannot allocate sglist\n"); |
1832 | goto err1; | |
1833 | } | |
1834 | } | |
1835 | ||
3b0fd9d7 AC |
1836 | info->bl_dev = ch->bl; |
1837 | ||
1c6a307a | 1838 | error = register_framebuffer(info); |
cfb4f5d1 MD |
1839 | if (error < 0) |
1840 | goto err1; | |
cfb4f5d1 | 1841 | |
edd153a3 LP |
1842 | dev_info(info->dev, "registered %s/%s as %dx%d %dbpp.\n", |
1843 | pdev->name, (ch->cfg.chan == LCDC_CHAN_MAINLCD) ? | |
1844 | "mainlcd" : "sublcd", info->var.xres, info->var.yres, | |
1845 | info->var.bits_per_pixel); | |
8564557a MD |
1846 | |
1847 | /* deferred io mode: disable clock to save power */ | |
6011bdea | 1848 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
8564557a | 1849 | sh_mobile_lcdc_clk_off(priv); |
cfb4f5d1 MD |
1850 | } |
1851 | ||
6011bdea GL |
1852 | /* Failure ignored */ |
1853 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; | |
1854 | fb_register_client(&priv->notifier); | |
1855 | ||
cfb4f5d1 | 1856 | return 0; |
8bed9055 | 1857 | err1: |
cfb4f5d1 | 1858 | sh_mobile_lcdc_remove(pdev); |
8bed9055 | 1859 | |
cfb4f5d1 MD |
1860 | return error; |
1861 | } | |
1862 | ||
cfb4f5d1 MD |
1863 | static struct platform_driver sh_mobile_lcdc_driver = { |
1864 | .driver = { | |
1865 | .name = "sh_mobile_lcdc_fb", | |
1866 | .owner = THIS_MODULE, | |
2feb075a | 1867 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
cfb4f5d1 MD |
1868 | }, |
1869 | .probe = sh_mobile_lcdc_probe, | |
1870 | .remove = sh_mobile_lcdc_remove, | |
1871 | }; | |
1872 | ||
4277f2c4 | 1873 | module_platform_driver(sh_mobile_lcdc_driver); |
cfb4f5d1 MD |
1874 | |
1875 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); | |
1876 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); | |
1877 | MODULE_LICENSE("GPL v2"); |