Commit | Line | Data |
---|---|---|
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 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/mm.h> | |
cfb4f5d1 | 15 | #include <linux/clk.h> |
0246c471 | 16 | #include <linux/pm_runtime.h> |
cfb4f5d1 MD |
17 | #include <linux/platform_device.h> |
18 | #include <linux/dma-mapping.h> | |
8564557a | 19 | #include <linux/interrupt.h> |
1c6a307a | 20 | #include <linux/vmalloc.h> |
40331b21 | 21 | #include <linux/ioctl.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
dd210503 | 23 | #include <linux/console.h> |
225c9a8d | 24 | #include <video/sh_mobile_lcdc.h> |
8564557a | 25 | #include <asm/atomic.h> |
cfb4f5d1 | 26 | |
6de9edd5 GL |
27 | #include "sh_mobile_lcdcfb.h" |
28 | ||
a6f15ade PE |
29 | #define SIDE_B_OFFSET 0x1000 |
30 | #define MIRROR_OFFSET 0x2000 | |
cfb4f5d1 | 31 | |
cfb4f5d1 MD |
32 | /* shared registers */ |
33 | #define _LDDCKR 0x410 | |
34 | #define _LDDCKSTPR 0x414 | |
35 | #define _LDINTR 0x468 | |
36 | #define _LDSR 0x46c | |
37 | #define _LDCNT1R 0x470 | |
38 | #define _LDCNT2R 0x474 | |
9dd38819 | 39 | #define _LDRCNTR 0x478 |
cfb4f5d1 MD |
40 | #define _LDDDSR 0x47c |
41 | #define _LDDWD0R 0x800 | |
42 | #define _LDDRDR 0x840 | |
43 | #define _LDDWAR 0x900 | |
44 | #define _LDDRAR 0x904 | |
45 | ||
0246c471 MD |
46 | /* shared registers and their order for context save/restore */ |
47 | static int lcdc_shared_regs[] = { | |
48 | _LDDCKR, | |
49 | _LDDCKSTPR, | |
50 | _LDINTR, | |
51 | _LDDDSR, | |
52 | _LDCNT1R, | |
53 | _LDCNT2R, | |
54 | }; | |
55 | #define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs) | |
56 | ||
c44f9f76 GL |
57 | #define DEFAULT_XRES 1280 |
58 | #define DEFAULT_YRES 1024 | |
cfb4f5d1 | 59 | |
0246c471 | 60 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
61 | [LDDCKPAT1R] = 0x400, |
62 | [LDDCKPAT2R] = 0x404, | |
63 | [LDMT1R] = 0x418, | |
64 | [LDMT2R] = 0x41c, | |
65 | [LDMT3R] = 0x420, | |
66 | [LDDFR] = 0x424, | |
67 | [LDSM1R] = 0x428, | |
8564557a | 68 | [LDSM2R] = 0x42c, |
cfb4f5d1 MD |
69 | [LDSA1R] = 0x430, |
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 | ||
97 | #define START_LCDC 0x00000001 | |
98 | #define LCDC_RESET 0x00000100 | |
99 | #define DISPLAY_BEU 0x00000008 | |
100 | #define LCDC_ENABLE 0x00000001 | |
8564557a | 101 | #define LDINTR_FE 0x00000400 |
9dd38819 PE |
102 | #define LDINTR_VSE 0x00000200 |
103 | #define LDINTR_VEE 0x00000100 | |
8564557a | 104 | #define LDINTR_FS 0x00000004 |
9dd38819 PE |
105 | #define LDINTR_VSS 0x00000002 |
106 | #define LDINTR_VES 0x00000001 | |
a6f15ade PE |
107 | #define LDRCNTR_SRS 0x00020000 |
108 | #define LDRCNTR_SRC 0x00010000 | |
109 | #define LDRCNTR_MRS 0x00000002 | |
110 | #define LDRCNTR_MRC 0x00000001 | |
40331b21 | 111 | #define LDSR_MRS 0x00000100 |
cfb4f5d1 | 112 | |
c44f9f76 GL |
113 | static const struct fb_videomode default_720p = { |
114 | .name = "HDMI 720p", | |
115 | .xres = 1280, | |
116 | .yres = 720, | |
117 | ||
118 | .left_margin = 200, | |
119 | .right_margin = 88, | |
120 | .hsync_len = 48, | |
121 | ||
122 | .upper_margin = 20, | |
123 | .lower_margin = 5, | |
124 | .vsync_len = 5, | |
125 | ||
126 | .pixclock = 13468, | |
127 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, | |
0246c471 MD |
128 | }; |
129 | ||
130 | struct sh_mobile_lcdc_priv { | |
131 | void __iomem *base; | |
132 | int irq; | |
133 | atomic_t hw_usecnt; | |
134 | struct device *dev; | |
135 | struct clk *dot_clk; | |
136 | unsigned long lddckr; | |
137 | struct sh_mobile_lcdc_chan ch[2]; | |
6011bdea | 138 | struct notifier_block notifier; |
0246c471 MD |
139 | unsigned long saved_shared_regs[NR_SHARED_REGS]; |
140 | int started; | |
141 | }; | |
142 | ||
a6f15ade PE |
143 | static bool banked(int reg_nr) |
144 | { | |
145 | switch (reg_nr) { | |
146 | case LDMT1R: | |
147 | case LDMT2R: | |
148 | case LDMT3R: | |
149 | case LDDFR: | |
150 | case LDSM1R: | |
151 | case LDSA1R: | |
152 | case LDMLSR: | |
153 | case LDHCNR: | |
154 | case LDHSYNR: | |
155 | case LDVLNR: | |
156 | case LDVSYNR: | |
157 | return true; | |
158 | } | |
159 | return false; | |
160 | } | |
161 | ||
cfb4f5d1 MD |
162 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
163 | int reg_nr, unsigned long data) | |
164 | { | |
165 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); | |
a6f15ade PE |
166 | if (banked(reg_nr)) |
167 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
168 | SIDE_B_OFFSET); | |
169 | } | |
170 | ||
171 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, | |
172 | int reg_nr, unsigned long data) | |
173 | { | |
174 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
175 | MIRROR_OFFSET); | |
cfb4f5d1 MD |
176 | } |
177 | ||
178 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, | |
179 | int reg_nr) | |
180 | { | |
181 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); | |
182 | } | |
183 | ||
184 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, | |
185 | unsigned long reg_offs, unsigned long data) | |
186 | { | |
187 | iowrite32(data, priv->base + reg_offs); | |
188 | } | |
189 | ||
190 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, | |
191 | unsigned long reg_offs) | |
192 | { | |
193 | return ioread32(priv->base + reg_offs); | |
194 | } | |
195 | ||
196 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, | |
197 | unsigned long reg_offs, | |
198 | unsigned long mask, unsigned long until) | |
199 | { | |
200 | while ((lcdc_read(priv, reg_offs) & mask) != until) | |
201 | cpu_relax(); | |
202 | } | |
203 | ||
204 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) | |
205 | { | |
206 | return chan->cfg.chan == LCDC_CHAN_SUBLCD; | |
207 | } | |
208 | ||
209 | static void lcdc_sys_write_index(void *handle, unsigned long data) | |
210 | { | |
211 | struct sh_mobile_lcdc_chan *ch = handle; | |
212 | ||
213 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x10000000); | |
214 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
215 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 216 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
217 | } |
218 | ||
219 | static void lcdc_sys_write_data(void *handle, unsigned long data) | |
220 | { | |
221 | struct sh_mobile_lcdc_chan *ch = handle; | |
222 | ||
223 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x11000000); | |
224 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
225 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 226 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
227 | } |
228 | ||
229 | static unsigned long lcdc_sys_read_data(void *handle) | |
230 | { | |
231 | struct sh_mobile_lcdc_chan *ch = handle; | |
232 | ||
233 | lcdc_write(ch->lcdc, _LDDRDR, 0x01000000); | |
234 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
235 | lcdc_write(ch->lcdc, _LDDRAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
236 | udelay(1); | |
909f10de | 237 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 | 238 | |
ec56b66f | 239 | return lcdc_read(ch->lcdc, _LDDRDR) & 0x3ffff; |
cfb4f5d1 MD |
240 | } |
241 | ||
242 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { | |
243 | lcdc_sys_write_index, | |
244 | lcdc_sys_write_data, | |
245 | lcdc_sys_read_data, | |
246 | }; | |
247 | ||
8564557a MD |
248 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
249 | { | |
0246c471 MD |
250 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
251 | pm_runtime_get_sync(priv->dev); | |
8564557a MD |
252 | if (priv->dot_clk) |
253 | clk_enable(priv->dot_clk); | |
254 | } | |
255 | } | |
256 | ||
257 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) | |
258 | { | |
0246c471 | 259 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
8564557a MD |
260 | if (priv->dot_clk) |
261 | clk_disable(priv->dot_clk); | |
0246c471 | 262 | pm_runtime_put(priv->dev); |
8564557a MD |
263 | } |
264 | } | |
8564557a | 265 | |
1c6a307a PM |
266 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
267 | struct list_head *pagelist) | |
268 | { | |
269 | struct sh_mobile_lcdc_chan *ch = info->par; | |
270 | unsigned int nr_pages_max = info->fix.smem_len >> PAGE_SHIFT; | |
271 | struct page *page; | |
272 | int nr_pages = 0; | |
273 | ||
274 | sg_init_table(ch->sglist, nr_pages_max); | |
275 | ||
276 | list_for_each_entry(page, pagelist, lru) | |
277 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); | |
278 | ||
279 | return nr_pages; | |
280 | } | |
281 | ||
8564557a MD |
282 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
283 | struct list_head *pagelist) | |
284 | { | |
285 | struct sh_mobile_lcdc_chan *ch = info->par; | |
ef61aae4 | 286 | struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg; |
8564557a MD |
287 | |
288 | /* enable clocks before accessing hardware */ | |
289 | sh_mobile_lcdc_clk_on(ch->lcdc); | |
290 | ||
5c1a56b5 PM |
291 | /* |
292 | * It's possible to get here without anything on the pagelist via | |
293 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() | |
294 | * invocation. In the former case, the acceleration routines are | |
295 | * stepped in to when using the framebuffer console causing the | |
296 | * workqueue to be scheduled without any dirty pages on the list. | |
297 | * | |
298 | * Despite this, a panel update is still needed given that the | |
299 | * acceleration routines have their own methods for writing in | |
300 | * that still need to be updated. | |
301 | * | |
302 | * The fsync() and empty pagelist case could be optimized for, | |
303 | * but we don't bother, as any application exhibiting such | |
304 | * behaviour is fundamentally broken anyways. | |
305 | */ | |
306 | if (!list_empty(pagelist)) { | |
307 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); | |
308 | ||
309 | /* trigger panel update */ | |
310 | dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
311 | if (bcfg->start_transfer) |
312 | bcfg->start_transfer(bcfg->board_data, ch, | |
313 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 PM |
314 | lcdc_write_chan(ch, LDSM2R, 1); |
315 | dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
316 | } else { |
317 | if (bcfg->start_transfer) | |
318 | bcfg->start_transfer(bcfg->board_data, ch, | |
319 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 | 320 | lcdc_write_chan(ch, LDSM2R, 1); |
ef61aae4 | 321 | } |
8564557a MD |
322 | } |
323 | ||
324 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) | |
325 | { | |
326 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
327 | ||
328 | if (fbdefio) | |
329 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); | |
330 | } | |
331 | ||
332 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) | |
333 | { | |
334 | struct sh_mobile_lcdc_priv *priv = data; | |
2feb075a | 335 | struct sh_mobile_lcdc_chan *ch; |
8564557a | 336 | unsigned long tmp; |
9dd38819 | 337 | unsigned long ldintr; |
2feb075a MD |
338 | int is_sub; |
339 | int k; | |
8564557a MD |
340 | |
341 | /* acknowledge interrupt */ | |
9dd38819 PE |
342 | ldintr = tmp = lcdc_read(priv, _LDINTR); |
343 | /* | |
344 | * disable further VSYNC End IRQs, preserve all other enabled IRQs, | |
345 | * write 0 to bits 0-6 to ack all triggered IRQs. | |
346 | */ | |
347 | tmp &= 0xffffff00 & ~LDINTR_VEE; | |
8564557a MD |
348 | lcdc_write(priv, _LDINTR, tmp); |
349 | ||
2feb075a MD |
350 | /* figure out if this interrupt is for main or sub lcd */ |
351 | is_sub = (lcdc_read(priv, _LDSR) & (1 << 10)) ? 1 : 0; | |
352 | ||
9dd38819 | 353 | /* wake up channel and disable clocks */ |
2feb075a MD |
354 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
355 | ch = &priv->ch[k]; | |
356 | ||
357 | if (!ch->enabled) | |
358 | continue; | |
359 | ||
9dd38819 PE |
360 | /* Frame Start */ |
361 | if (ldintr & LDINTR_FS) { | |
362 | if (is_sub == lcdc_chan_is_sublcd(ch)) { | |
363 | ch->frame_end = 1; | |
364 | wake_up(&ch->frame_end_wait); | |
2feb075a | 365 | |
9dd38819 PE |
366 | sh_mobile_lcdc_clk_off(priv); |
367 | } | |
368 | } | |
369 | ||
370 | /* VSYNC End */ | |
40331b21 PE |
371 | if (ldintr & LDINTR_VES) |
372 | complete(&ch->vsync_completion); | |
2feb075a MD |
373 | } |
374 | ||
8564557a MD |
375 | return IRQ_HANDLED; |
376 | } | |
377 | ||
cfb4f5d1 MD |
378 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
379 | int start) | |
380 | { | |
381 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); | |
382 | int k; | |
383 | ||
384 | /* start or stop the lcdc */ | |
385 | if (start) | |
386 | lcdc_write(priv, _LDCNT2R, tmp | START_LCDC); | |
387 | else | |
388 | lcdc_write(priv, _LDCNT2R, tmp & ~START_LCDC); | |
389 | ||
390 | /* wait until power is applied/stopped on all channels */ | |
391 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
392 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) | |
393 | while (1) { | |
394 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) & 3; | |
395 | if (start && tmp == 3) | |
396 | break; | |
397 | if (!start && tmp == 0) | |
398 | break; | |
399 | cpu_relax(); | |
400 | } | |
401 | ||
402 | if (!start) | |
403 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ | |
404 | } | |
405 | ||
6011bdea GL |
406 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
407 | { | |
1c120deb GL |
408 | struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var; |
409 | unsigned long h_total, hsync_pos, display_h_total; | |
6011bdea GL |
410 | u32 tmp; |
411 | ||
412 | tmp = ch->ldmt1r_value; | |
413 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; | |
414 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; | |
415 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; | |
416 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; | |
417 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; | |
418 | tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; | |
419 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0; | |
420 | lcdc_write_chan(ch, LDMT1R, tmp); | |
421 | ||
422 | /* setup SYS bus */ | |
423 | lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); | |
424 | lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); | |
425 | ||
426 | /* horizontal configuration */ | |
1c120deb GL |
427 | h_total = display_var->xres + display_var->hsync_len + |
428 | display_var->left_margin + display_var->right_margin; | |
6011bdea | 429 | tmp = h_total / 8; /* HTCN */ |
1c120deb | 430 | tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */ |
6011bdea GL |
431 | lcdc_write_chan(ch, LDHCNR, tmp); |
432 | ||
1c120deb | 433 | hsync_pos = display_var->xres + display_var->right_margin; |
6011bdea | 434 | tmp = hsync_pos / 8; /* HSYNP */ |
1c120deb | 435 | tmp |= (display_var->hsync_len / 8) << 16; /* HSYNW */ |
6011bdea GL |
436 | lcdc_write_chan(ch, LDHSYNR, tmp); |
437 | ||
438 | /* vertical configuration */ | |
1c120deb GL |
439 | tmp = display_var->yres + display_var->vsync_len + |
440 | display_var->upper_margin + display_var->lower_margin; /* VTLN */ | |
441 | tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */ | |
6011bdea GL |
442 | lcdc_write_chan(ch, LDVLNR, tmp); |
443 | ||
1c120deb GL |
444 | tmp = display_var->yres + display_var->lower_margin; /* VSYNP */ |
445 | tmp |= display_var->vsync_len << 16; /* VSYNW */ | |
6011bdea GL |
446 | lcdc_write_chan(ch, LDVSYNR, tmp); |
447 | ||
448 | /* Adjust horizontal synchronisation for HDMI */ | |
1c120deb GL |
449 | display_h_total = display_var->xres + display_var->hsync_len + |
450 | display_var->left_margin + display_var->right_margin; | |
451 | tmp = ((display_var->xres & 7) << 24) | | |
452 | ((display_h_total & 7) << 16) | | |
453 | ((display_var->hsync_len & 7) << 8) | | |
6011bdea GL |
454 | hsync_pos; |
455 | lcdc_write_chan(ch, LDHAJR, tmp); | |
456 | } | |
457 | ||
cfb4f5d1 MD |
458 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
459 | { | |
460 | struct sh_mobile_lcdc_chan *ch; | |
cfb4f5d1 MD |
461 | struct sh_mobile_lcdc_board_cfg *board_cfg; |
462 | unsigned long tmp; | |
463 | int k, m; | |
464 | int ret = 0; | |
465 | ||
8564557a MD |
466 | /* enable clocks before accessing the hardware */ |
467 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
468 | if (priv->ch[k].enabled) | |
469 | sh_mobile_lcdc_clk_on(priv); | |
470 | ||
cfb4f5d1 MD |
471 | /* reset */ |
472 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LCDC_RESET); | |
473 | lcdc_wait_bit(priv, _LDCNT2R, LCDC_RESET, 0); | |
474 | ||
475 | /* enable LCDC channels */ | |
476 | tmp = lcdc_read(priv, _LDCNT2R); | |
477 | tmp |= priv->ch[0].enabled; | |
478 | tmp |= priv->ch[1].enabled; | |
479 | lcdc_write(priv, _LDCNT2R, tmp); | |
480 | ||
481 | /* read data from external memory, avoid using the BEU for now */ | |
482 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) & ~DISPLAY_BEU); | |
483 | ||
484 | /* stop the lcdc first */ | |
485 | sh_mobile_lcdc_start_stop(priv, 0); | |
486 | ||
487 | /* configure clocks */ | |
488 | tmp = priv->lddckr; | |
489 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
490 | ch = &priv->ch[k]; | |
491 | ||
492 | if (!priv->ch[k].enabled) | |
493 | continue; | |
494 | ||
495 | m = ch->cfg.clock_divider; | |
496 | if (!m) | |
497 | continue; | |
498 | ||
499 | if (m == 1) | |
500 | m = 1 << 6; | |
501 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); | |
502 | ||
dd210503 | 503 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider denominator */ |
1c120deb | 504 | lcdc_write_chan(ch, LDDCKPAT1R, 0); |
cfb4f5d1 MD |
505 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); |
506 | } | |
507 | ||
508 | lcdc_write(priv, _LDDCKR, tmp); | |
509 | ||
510 | /* start dotclock again */ | |
511 | lcdc_write(priv, _LDDCKSTPR, 0); | |
512 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); | |
513 | ||
8564557a | 514 | /* interrupts are disabled to begin with */ |
cfb4f5d1 MD |
515 | lcdc_write(priv, _LDINTR, 0); |
516 | ||
517 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
518 | ch = &priv->ch[k]; | |
cfb4f5d1 MD |
519 | |
520 | if (!ch->enabled) | |
521 | continue; | |
522 | ||
6011bdea | 523 | sh_mobile_lcdc_geometry(ch); |
cfb4f5d1 MD |
524 | |
525 | /* power supply */ | |
526 | lcdc_write_chan(ch, LDPMR, 0); | |
527 | ||
cfb4f5d1 MD |
528 | board_cfg = &ch->cfg.board_cfg; |
529 | if (board_cfg->setup_sys) | |
530 | ret = board_cfg->setup_sys(board_cfg->board_data, ch, | |
531 | &sh_mobile_lcdc_sys_bus_ops); | |
532 | if (ret) | |
533 | return ret; | |
534 | } | |
535 | ||
cfb4f5d1 MD |
536 | /* word and long word swap */ |
537 | lcdc_write(priv, _LDDDSR, lcdc_read(priv, _LDDDSR) | 6); | |
538 | ||
539 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
540 | ch = &priv->ch[k]; | |
541 | ||
542 | if (!priv->ch[k].enabled) | |
543 | continue; | |
544 | ||
545 | /* set bpp format in PKF[4:0] */ | |
546 | tmp = lcdc_read_chan(ch, LDDFR); | |
1c120deb | 547 | tmp &= ~0x0001001f; |
e33afddc | 548 | tmp |= (ch->info->var.bits_per_pixel == 16) ? 3 : 0; |
cfb4f5d1 MD |
549 | lcdc_write_chan(ch, LDDFR, tmp); |
550 | ||
551 | /* point out our frame buffer */ | |
e33afddc | 552 | lcdc_write_chan(ch, LDSA1R, ch->info->fix.smem_start); |
cfb4f5d1 MD |
553 | |
554 | /* set line size */ | |
e33afddc | 555 | lcdc_write_chan(ch, LDMLSR, ch->info->fix.line_length); |
cfb4f5d1 | 556 | |
8564557a MD |
557 | /* setup deferred io if SYS bus */ |
558 | tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; | |
559 | if (ch->ldmt1r_value & (1 << 12) && tmp) { | |
560 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; | |
561 | ch->defio.delay = msecs_to_jiffies(tmp); | |
e33afddc PM |
562 | ch->info->fbdefio = &ch->defio; |
563 | fb_deferred_io_init(ch->info); | |
8564557a MD |
564 | |
565 | /* one-shot mode */ | |
566 | lcdc_write_chan(ch, LDSM1R, 1); | |
567 | ||
568 | /* enable "Frame End Interrupt Enable" bit */ | |
569 | lcdc_write(priv, _LDINTR, LDINTR_FE); | |
570 | ||
571 | } else { | |
572 | /* continuous read mode */ | |
573 | lcdc_write_chan(ch, LDSM1R, 0); | |
574 | } | |
cfb4f5d1 MD |
575 | } |
576 | ||
577 | /* display output */ | |
578 | lcdc_write(priv, _LDCNT1R, LCDC_ENABLE); | |
579 | ||
580 | /* start the lcdc */ | |
581 | sh_mobile_lcdc_start_stop(priv, 1); | |
8e9bb19e | 582 | priv->started = 1; |
cfb4f5d1 MD |
583 | |
584 | /* tell the board code to enable the panel */ | |
585 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
586 | ch = &priv->ch[k]; | |
21bc1f02 MD |
587 | if (!ch->enabled) |
588 | continue; | |
589 | ||
cfb4f5d1 | 590 | board_cfg = &ch->cfg.board_cfg; |
6de9edd5 | 591 | if (try_module_get(board_cfg->owner) && board_cfg->display_on) { |
c2439398 | 592 | board_cfg->display_on(board_cfg->board_data, ch->info); |
6de9edd5 GL |
593 | module_put(board_cfg->owner); |
594 | } | |
cfb4f5d1 MD |
595 | } |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
600 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) | |
601 | { | |
602 | struct sh_mobile_lcdc_chan *ch; | |
603 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
604 | int k; | |
605 | ||
2feb075a | 606 | /* clean up deferred io and ask board code to disable panel */ |
cfb4f5d1 MD |
607 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
608 | ch = &priv->ch[k]; | |
21bc1f02 MD |
609 | if (!ch->enabled) |
610 | continue; | |
8564557a | 611 | |
2feb075a MD |
612 | /* deferred io mode: |
613 | * flush frame, and wait for frame end interrupt | |
614 | * clean up deferred io and enable clock | |
615 | */ | |
5ef6b505 | 616 | if (ch->info && ch->info->fbdefio) { |
2feb075a | 617 | ch->frame_end = 0; |
e33afddc | 618 | schedule_delayed_work(&ch->info->deferred_work, 0); |
2feb075a | 619 | wait_event(ch->frame_end_wait, ch->frame_end); |
e33afddc PM |
620 | fb_deferred_io_cleanup(ch->info); |
621 | ch->info->fbdefio = NULL; | |
2feb075a | 622 | sh_mobile_lcdc_clk_on(priv); |
8564557a | 623 | } |
2feb075a MD |
624 | |
625 | board_cfg = &ch->cfg.board_cfg; | |
6de9edd5 | 626 | if (try_module_get(board_cfg->owner) && board_cfg->display_off) { |
2feb075a | 627 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
628 | module_put(board_cfg->owner); |
629 | } | |
cfb4f5d1 MD |
630 | } |
631 | ||
632 | /* stop the lcdc */ | |
8e9bb19e MD |
633 | if (priv->started) { |
634 | sh_mobile_lcdc_start_stop(priv, 0); | |
635 | priv->started = 0; | |
636 | } | |
b51339ff | 637 | |
8564557a MD |
638 | /* stop clocks */ |
639 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
640 | if (priv->ch[k].enabled) | |
641 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
642 | } |
643 | ||
644 | static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) | |
645 | { | |
646 | int ifm, miftyp; | |
647 | ||
648 | switch (ch->cfg.interface_type) { | |
649 | case RGB8: ifm = 0; miftyp = 0; break; | |
650 | case RGB9: ifm = 0; miftyp = 4; break; | |
651 | case RGB12A: ifm = 0; miftyp = 5; break; | |
652 | case RGB12B: ifm = 0; miftyp = 6; break; | |
653 | case RGB16: ifm = 0; miftyp = 7; break; | |
654 | case RGB18: ifm = 0; miftyp = 10; break; | |
655 | case RGB24: ifm = 0; miftyp = 11; break; | |
656 | case SYS8A: ifm = 1; miftyp = 0; break; | |
657 | case SYS8B: ifm = 1; miftyp = 1; break; | |
658 | case SYS8C: ifm = 1; miftyp = 2; break; | |
659 | case SYS8D: ifm = 1; miftyp = 3; break; | |
660 | case SYS9: ifm = 1; miftyp = 4; break; | |
661 | case SYS12: ifm = 1; miftyp = 5; break; | |
662 | case SYS16A: ifm = 1; miftyp = 7; break; | |
663 | case SYS16B: ifm = 1; miftyp = 8; break; | |
664 | case SYS16C: ifm = 1; miftyp = 9; break; | |
665 | case SYS18: ifm = 1; miftyp = 10; break; | |
666 | case SYS24: ifm = 1; miftyp = 11; break; | |
667 | default: goto bad; | |
668 | } | |
669 | ||
670 | /* SUBLCD only supports SYS interface */ | |
671 | if (lcdc_chan_is_sublcd(ch)) { | |
672 | if (ifm == 0) | |
673 | goto bad; | |
674 | else | |
675 | ifm = 0; | |
676 | } | |
677 | ||
678 | ch->ldmt1r_value = (ifm << 12) | miftyp; | |
679 | return 0; | |
680 | bad: | |
681 | return -EINVAL; | |
682 | } | |
683 | ||
b51339ff MD |
684 | static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, |
685 | int clock_source, | |
cfb4f5d1 MD |
686 | struct sh_mobile_lcdc_priv *priv) |
687 | { | |
688 | char *str; | |
689 | int icksel; | |
690 | ||
691 | switch (clock_source) { | |
692 | case LCDC_CLK_BUS: str = "bus_clk"; icksel = 0; break; | |
693 | case LCDC_CLK_PERIPHERAL: str = "peripheral_clk"; icksel = 1; break; | |
694 | case LCDC_CLK_EXTERNAL: str = NULL; icksel = 2; break; | |
695 | default: | |
696 | return -EINVAL; | |
697 | } | |
698 | ||
699 | priv->lddckr = icksel << 16; | |
700 | ||
701 | if (str) { | |
b51339ff MD |
702 | priv->dot_clk = clk_get(&pdev->dev, str); |
703 | if (IS_ERR(priv->dot_clk)) { | |
704 | dev_err(&pdev->dev, "cannot get dot clock %s\n", str); | |
b51339ff | 705 | return PTR_ERR(priv->dot_clk); |
cfb4f5d1 | 706 | } |
cfb4f5d1 | 707 | } |
0246c471 MD |
708 | |
709 | /* Runtime PM support involves two step for this driver: | |
710 | * 1) Enable Runtime PM | |
711 | * 2) Force Runtime PM Resume since hardware is accessed from probe() | |
712 | */ | |
8bed9055 | 713 | priv->dev = &pdev->dev; |
0246c471 MD |
714 | pm_runtime_enable(priv->dev); |
715 | pm_runtime_resume(priv->dev); | |
cfb4f5d1 MD |
716 | return 0; |
717 | } | |
718 | ||
719 | static int sh_mobile_lcdc_setcolreg(u_int regno, | |
720 | u_int red, u_int green, u_int blue, | |
721 | u_int transp, struct fb_info *info) | |
722 | { | |
723 | u32 *palette = info->pseudo_palette; | |
724 | ||
725 | if (regno >= PALETTE_NR) | |
726 | return -EINVAL; | |
727 | ||
728 | /* only FB_VISUAL_TRUECOLOR supported */ | |
729 | ||
730 | red >>= 16 - info->var.red.length; | |
731 | green >>= 16 - info->var.green.length; | |
732 | blue >>= 16 - info->var.blue.length; | |
733 | transp >>= 16 - info->var.transp.length; | |
734 | ||
735 | palette[regno] = (red << info->var.red.offset) | | |
736 | (green << info->var.green.offset) | | |
737 | (blue << info->var.blue.offset) | | |
738 | (transp << info->var.transp.offset); | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
743 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { | |
744 | .id = "SH Mobile LCDC", | |
745 | .type = FB_TYPE_PACKED_PIXELS, | |
746 | .visual = FB_VISUAL_TRUECOLOR, | |
747 | .accel = FB_ACCEL_NONE, | |
9dd38819 PE |
748 | .xpanstep = 0, |
749 | .ypanstep = 1, | |
750 | .ywrapstep = 0, | |
cfb4f5d1 MD |
751 | }; |
752 | ||
8564557a MD |
753 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
754 | const struct fb_fillrect *rect) | |
755 | { | |
756 | sys_fillrect(info, rect); | |
757 | sh_mobile_lcdc_deferred_io_touch(info); | |
758 | } | |
759 | ||
760 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, | |
761 | const struct fb_copyarea *area) | |
762 | { | |
763 | sys_copyarea(info, area); | |
764 | sh_mobile_lcdc_deferred_io_touch(info); | |
765 | } | |
766 | ||
767 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, | |
768 | const struct fb_image *image) | |
769 | { | |
770 | sys_imageblit(info, image); | |
771 | sh_mobile_lcdc_deferred_io_touch(info); | |
772 | } | |
773 | ||
9dd38819 PE |
774 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
775 | struct fb_info *info) | |
776 | { | |
777 | struct sh_mobile_lcdc_chan *ch = info->par; | |
92e1f9a7 PE |
778 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
779 | unsigned long ldrcntr; | |
780 | unsigned long new_pan_offset; | |
781 | ||
782 | new_pan_offset = (var->yoffset * info->fix.line_length) + | |
783 | (var->xoffset * (info->var.bits_per_pixel / 8)); | |
9dd38819 | 784 | |
92e1f9a7 | 785 | if (new_pan_offset == ch->pan_offset) |
9dd38819 PE |
786 | return 0; /* No change, do nothing */ |
787 | ||
92e1f9a7 | 788 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
9dd38819 | 789 | |
92e1f9a7 PE |
790 | /* Set the source address for the next refresh */ |
791 | lcdc_write_chan_mirror(ch, LDSA1R, ch->dma_handle + new_pan_offset); | |
792 | if (lcdc_chan_is_sublcd(ch)) | |
793 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); | |
794 | else | |
795 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); | |
796 | ||
797 | ch->pan_offset = new_pan_offset; | |
798 | ||
799 | sh_mobile_lcdc_deferred_io_touch(info); | |
9dd38819 PE |
800 | |
801 | return 0; | |
802 | } | |
803 | ||
40331b21 PE |
804 | static int sh_mobile_wait_for_vsync(struct fb_info *info) |
805 | { | |
806 | struct sh_mobile_lcdc_chan *ch = info->par; | |
807 | unsigned long ldintr; | |
808 | int ret; | |
809 | ||
810 | /* Enable VSync End interrupt */ | |
811 | ldintr = lcdc_read(ch->lcdc, _LDINTR); | |
812 | ldintr |= LDINTR_VEE; | |
813 | lcdc_write(ch->lcdc, _LDINTR, ldintr); | |
814 | ||
815 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, | |
816 | msecs_to_jiffies(100)); | |
817 | if (!ret) | |
818 | return -ETIMEDOUT; | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
823 | static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd, | |
824 | unsigned long arg) | |
825 | { | |
826 | int retval; | |
827 | ||
828 | switch (cmd) { | |
829 | case FBIO_WAITFORVSYNC: | |
830 | retval = sh_mobile_wait_for_vsync(info); | |
831 | break; | |
832 | ||
833 | default: | |
834 | retval = -ENOIOCTLCMD; | |
835 | break; | |
836 | } | |
837 | return retval; | |
838 | } | |
839 | ||
dd210503 GL |
840 | static void sh_mobile_fb_reconfig(struct fb_info *info) |
841 | { | |
842 | struct sh_mobile_lcdc_chan *ch = info->par; | |
843 | struct fb_videomode mode1, mode2; | |
844 | struct fb_event event; | |
845 | int evnt = FB_EVENT_MODE_CHANGE_ALL; | |
846 | ||
847 | if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) | |
848 | /* More framebuffer users are active */ | |
849 | return; | |
850 | ||
851 | fb_var_to_videomode(&mode1, &ch->display_var); | |
852 | fb_var_to_videomode(&mode2, &info->var); | |
853 | ||
854 | if (fb_mode_is_equal(&mode1, &mode2)) | |
855 | return; | |
856 | ||
857 | /* Display has been re-plugged, framebuffer is free now, reconfigure */ | |
858 | if (fb_set_var(info, &ch->display_var) < 0) | |
859 | /* Couldn't reconfigure, hopefully, can continue as before */ | |
860 | return; | |
861 | ||
862 | info->fix.line_length = mode2.xres * (ch->cfg.bpp / 8); | |
863 | ||
864 | /* | |
865 | * fb_set_var() calls the notifier change internally, only if | |
866 | * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a | |
867 | * user event, we have to call the chain ourselves. | |
868 | */ | |
869 | event.info = info; | |
870 | event.data = &mode2; | |
871 | fb_notifier_call_chain(evnt, &event); | |
872 | } | |
873 | ||
874 | /* | |
875 | * Locking: both .fb_release() and .fb_open() are called with info->lock held if | |
876 | * user == 1, or with console sem held, if user == 0. | |
877 | */ | |
878 | static int sh_mobile_release(struct fb_info *info, int user) | |
879 | { | |
880 | struct sh_mobile_lcdc_chan *ch = info->par; | |
881 | ||
882 | mutex_lock(&ch->open_lock); | |
883 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
884 | ||
885 | ch->use_count--; | |
886 | ||
887 | /* Nothing to reconfigure, when called from fbcon */ | |
888 | if (user) { | |
889 | acquire_console_sem(); | |
890 | sh_mobile_fb_reconfig(info); | |
891 | release_console_sem(); | |
892 | } | |
893 | ||
894 | mutex_unlock(&ch->open_lock); | |
895 | ||
896 | return 0; | |
897 | } | |
898 | ||
899 | static int sh_mobile_open(struct fb_info *info, int user) | |
900 | { | |
901 | struct sh_mobile_lcdc_chan *ch = info->par; | |
902 | ||
903 | mutex_lock(&ch->open_lock); | |
904 | ch->use_count++; | |
905 | ||
906 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
907 | mutex_unlock(&ch->open_lock); | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
913 | { | |
914 | struct sh_mobile_lcdc_chan *ch = info->par; | |
915 | ||
916 | if (var->xres < 160 || var->xres > 1920 || | |
917 | var->yres < 120 || var->yres > 1080 || | |
918 | var->left_margin < 32 || var->left_margin > 320 || | |
919 | var->right_margin < 12 || var->right_margin > 240 || | |
920 | var->upper_margin < 12 || var->upper_margin > 120 || | |
921 | var->lower_margin < 1 || var->lower_margin > 64 || | |
6031f347 | 922 | var->hsync_len < 32 || var->hsync_len > 240 || |
dd210503 GL |
923 | var->vsync_len < 2 || var->vsync_len > 64 || |
924 | var->pixclock < 6000 || var->pixclock > 40000 || | |
925 | var->xres * var->yres * (ch->cfg.bpp / 8) * 2 > info->fix.smem_len) { | |
926 | dev_warn(info->dev, "Invalid info: %u %u %u %u %u %u %u %u %u!\n", | |
927 | var->xres, var->yres, | |
928 | var->left_margin, var->right_margin, | |
929 | var->upper_margin, var->lower_margin, | |
930 | var->hsync_len, var->vsync_len, | |
931 | var->pixclock); | |
932 | return -EINVAL; | |
933 | } | |
934 | return 0; | |
935 | } | |
40331b21 | 936 | |
cfb4f5d1 | 937 | static struct fb_ops sh_mobile_lcdc_ops = { |
9dd38819 | 938 | .owner = THIS_MODULE, |
cfb4f5d1 | 939 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2540c111 MD |
940 | .fb_read = fb_sys_read, |
941 | .fb_write = fb_sys_write, | |
8564557a MD |
942 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
943 | .fb_copyarea = sh_mobile_lcdc_copyarea, | |
944 | .fb_imageblit = sh_mobile_lcdc_imageblit, | |
9dd38819 | 945 | .fb_pan_display = sh_mobile_fb_pan_display, |
40331b21 | 946 | .fb_ioctl = sh_mobile_ioctl, |
dd210503 GL |
947 | .fb_open = sh_mobile_open, |
948 | .fb_release = sh_mobile_release, | |
949 | .fb_check_var = sh_mobile_check_var, | |
cfb4f5d1 MD |
950 | }; |
951 | ||
952 | static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp) | |
953 | { | |
954 | switch (bpp) { | |
955 | case 16: /* PKF[4:0] = 00011 - RGB 565 */ | |
956 | var->red.offset = 11; | |
957 | var->red.length = 5; | |
958 | var->green.offset = 5; | |
959 | var->green.length = 6; | |
960 | var->blue.offset = 0; | |
961 | var->blue.length = 5; | |
962 | var->transp.offset = 0; | |
963 | var->transp.length = 0; | |
964 | break; | |
965 | ||
966 | case 32: /* PKF[4:0] = 00000 - RGB 888 | |
967 | * sh7722 pdf says 00RRGGBB but reality is GGBB00RR | |
968 | * this may be because LDDDSR has word swap enabled.. | |
969 | */ | |
970 | var->red.offset = 0; | |
971 | var->red.length = 8; | |
972 | var->green.offset = 24; | |
973 | var->green.length = 8; | |
974 | var->blue.offset = 16; | |
975 | var->blue.length = 8; | |
976 | var->transp.offset = 0; | |
977 | var->transp.length = 0; | |
978 | break; | |
979 | default: | |
980 | return -EINVAL; | |
981 | } | |
982 | var->bits_per_pixel = bpp; | |
983 | var->red.msb_right = 0; | |
984 | var->green.msb_right = 0; | |
985 | var->blue.msb_right = 0; | |
986 | var->transp.msb_right = 0; | |
987 | return 0; | |
988 | } | |
989 | ||
2feb075a MD |
990 | static int sh_mobile_lcdc_suspend(struct device *dev) |
991 | { | |
992 | struct platform_device *pdev = to_platform_device(dev); | |
993 | ||
994 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); | |
995 | return 0; | |
996 | } | |
997 | ||
998 | static int sh_mobile_lcdc_resume(struct device *dev) | |
999 | { | |
1000 | struct platform_device *pdev = to_platform_device(dev); | |
1001 | ||
1002 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); | |
1003 | } | |
1004 | ||
0246c471 MD |
1005 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
1006 | { | |
1007 | struct platform_device *pdev = to_platform_device(dev); | |
1008 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
1009 | struct sh_mobile_lcdc_chan *ch; | |
1010 | int k, n; | |
1011 | ||
1012 | /* save per-channel registers */ | |
1013 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
1014 | ch = &p->ch[k]; | |
1015 | if (!ch->enabled) | |
1016 | continue; | |
1017 | for (n = 0; n < NR_CH_REGS; n++) | |
1018 | ch->saved_ch_regs[n] = lcdc_read_chan(ch, n); | |
1019 | } | |
1020 | ||
1021 | /* save shared registers */ | |
1022 | for (n = 0; n < NR_SHARED_REGS; n++) | |
1023 | p->saved_shared_regs[n] = lcdc_read(p, lcdc_shared_regs[n]); | |
1024 | ||
1025 | /* turn off LCDC hardware */ | |
1026 | lcdc_write(p, _LDCNT1R, 0); | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) | |
1031 | { | |
1032 | struct platform_device *pdev = to_platform_device(dev); | |
1033 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
1034 | struct sh_mobile_lcdc_chan *ch; | |
1035 | int k, n; | |
1036 | ||
1037 | /* restore per-channel registers */ | |
1038 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
1039 | ch = &p->ch[k]; | |
1040 | if (!ch->enabled) | |
1041 | continue; | |
1042 | for (n = 0; n < NR_CH_REGS; n++) | |
1043 | lcdc_write_chan(ch, n, ch->saved_ch_regs[n]); | |
1044 | } | |
1045 | ||
1046 | /* restore shared registers */ | |
1047 | for (n = 0; n < NR_SHARED_REGS; n++) | |
1048 | lcdc_write(p, lcdc_shared_regs[n], p->saved_shared_regs[n]); | |
1049 | ||
1050 | return 0; | |
1051 | } | |
1052 | ||
47145210 | 1053 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2feb075a MD |
1054 | .suspend = sh_mobile_lcdc_suspend, |
1055 | .resume = sh_mobile_lcdc_resume, | |
0246c471 MD |
1056 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
1057 | .runtime_resume = sh_mobile_lcdc_runtime_resume, | |
2feb075a MD |
1058 | }; |
1059 | ||
6de9edd5 | 1060 | /* locking: called with info->lock held */ |
6011bdea GL |
1061 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
1062 | unsigned long action, void *data) | |
1063 | { | |
1064 | struct fb_event *event = data; | |
1065 | struct fb_info *info = event->info; | |
1066 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1067 | struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; | |
afe417c0 | 1068 | int ret; |
6011bdea GL |
1069 | |
1070 | if (&ch->lcdc->notifier != nb) | |
baf16374 | 1071 | return NOTIFY_DONE; |
6011bdea GL |
1072 | |
1073 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", | |
1074 | __func__, action, event->data); | |
1075 | ||
1076 | switch(action) { | |
1077 | case FB_EVENT_SUSPEND: | |
6de9edd5 | 1078 | if (try_module_get(board_cfg->owner) && board_cfg->display_off) { |
6011bdea | 1079 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
1080 | module_put(board_cfg->owner); |
1081 | } | |
6011bdea | 1082 | pm_runtime_put(info->device); |
afe417c0 | 1083 | sh_mobile_lcdc_stop(ch->lcdc); |
6011bdea GL |
1084 | break; |
1085 | case FB_EVENT_RESUME: | |
dd210503 GL |
1086 | mutex_lock(&ch->open_lock); |
1087 | sh_mobile_fb_reconfig(info); | |
1088 | mutex_unlock(&ch->open_lock); | |
6011bdea GL |
1089 | |
1090 | /* HDMI must be enabled before LCDC configuration */ | |
6de9edd5 | 1091 | if (try_module_get(board_cfg->owner) && board_cfg->display_on) { |
dd210503 | 1092 | board_cfg->display_on(board_cfg->board_data, info); |
6de9edd5 | 1093 | module_put(board_cfg->owner); |
6011bdea GL |
1094 | } |
1095 | ||
afe417c0 GL |
1096 | ret = sh_mobile_lcdc_start(ch->lcdc); |
1097 | if (!ret) | |
1098 | pm_runtime_get_sync(info->device); | |
6011bdea GL |
1099 | } |
1100 | ||
baf16374 | 1101 | return NOTIFY_OK; |
6011bdea GL |
1102 | } |
1103 | ||
cfb4f5d1 MD |
1104 | static int sh_mobile_lcdc_remove(struct platform_device *pdev); |
1105 | ||
c2e13037 | 1106 | static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) |
cfb4f5d1 MD |
1107 | { |
1108 | struct fb_info *info; | |
1109 | struct sh_mobile_lcdc_priv *priv; | |
01ac25b5 | 1110 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
cfb4f5d1 MD |
1111 | struct resource *res; |
1112 | int error; | |
1113 | void *buf; | |
1114 | int i, j; | |
1115 | ||
01ac25b5 | 1116 | if (!pdata) { |
cfb4f5d1 | 1117 | dev_err(&pdev->dev, "no platform data defined\n"); |
8bed9055 | 1118 | return -EINVAL; |
cfb4f5d1 MD |
1119 | } |
1120 | ||
1121 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
8564557a MD |
1122 | i = platform_get_irq(pdev, 0); |
1123 | if (!res || i < 0) { | |
1124 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
8bed9055 | 1125 | return -ENOENT; |
cfb4f5d1 MD |
1126 | } |
1127 | ||
1128 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
1129 | if (!priv) { | |
1130 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
8bed9055 | 1131 | return -ENOMEM; |
cfb4f5d1 MD |
1132 | } |
1133 | ||
8bed9055 GL |
1134 | platform_set_drvdata(pdev, priv); |
1135 | ||
8564557a | 1136 | error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED, |
7ad33e74 | 1137 | dev_name(&pdev->dev), priv); |
8564557a MD |
1138 | if (error) { |
1139 | dev_err(&pdev->dev, "unable to request irq\n"); | |
1140 | goto err1; | |
1141 | } | |
1142 | ||
1143 | priv->irq = i; | |
5ef6b505 | 1144 | atomic_set(&priv->hw_usecnt, -1); |
cfb4f5d1 MD |
1145 | |
1146 | j = 0; | |
1147 | for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) { | |
01ac25b5 | 1148 | struct sh_mobile_lcdc_chan *ch = priv->ch + j; |
cfb4f5d1 | 1149 | |
01ac25b5 GL |
1150 | ch->lcdc = priv; |
1151 | memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i])); | |
cfb4f5d1 | 1152 | |
01ac25b5 | 1153 | error = sh_mobile_lcdc_check_interface(ch); |
cfb4f5d1 MD |
1154 | if (error) { |
1155 | dev_err(&pdev->dev, "unsupported interface type\n"); | |
1156 | goto err1; | |
1157 | } | |
01ac25b5 GL |
1158 | init_waitqueue_head(&ch->frame_end_wait); |
1159 | init_completion(&ch->vsync_completion); | |
1160 | ch->pan_offset = 0; | |
cfb4f5d1 MD |
1161 | |
1162 | switch (pdata->ch[i].chan) { | |
1163 | case LCDC_CHAN_MAINLCD: | |
01ac25b5 GL |
1164 | ch->enabled = 1 << 1; |
1165 | ch->reg_offs = lcdc_offs_mainlcd; | |
cfb4f5d1 MD |
1166 | j++; |
1167 | break; | |
1168 | case LCDC_CHAN_SUBLCD: | |
01ac25b5 GL |
1169 | ch->enabled = 1 << 2; |
1170 | ch->reg_offs = lcdc_offs_sublcd; | |
cfb4f5d1 MD |
1171 | j++; |
1172 | break; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | if (!j) { | |
1177 | dev_err(&pdev->dev, "no channels defined\n"); | |
1178 | error = -EINVAL; | |
1179 | goto err1; | |
1180 | } | |
1181 | ||
dba6f385 GL |
1182 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
1183 | if (!priv->base) | |
1184 | goto err1; | |
1185 | ||
b51339ff | 1186 | error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); |
cfb4f5d1 MD |
1187 | if (error) { |
1188 | dev_err(&pdev->dev, "unable to setup clocks\n"); | |
1189 | goto err1; | |
1190 | } | |
1191 | ||
cfb4f5d1 | 1192 | for (i = 0; i < j; i++) { |
6011bdea | 1193 | struct fb_var_screeninfo *var; |
71d3b0fc | 1194 | const struct fb_videomode *lcd_cfg, *max_cfg = NULL; |
01ac25b5 | 1195 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
c44f9f76 GL |
1196 | struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg; |
1197 | const struct fb_videomode *mode = cfg->lcd_cfg; | |
71d3b0fc GL |
1198 | unsigned long max_size = 0; |
1199 | int k; | |
cfb4f5d1 | 1200 | |
01ac25b5 GL |
1201 | ch->info = framebuffer_alloc(0, &pdev->dev); |
1202 | if (!ch->info) { | |
e33afddc PM |
1203 | dev_err(&pdev->dev, "unable to allocate fb_info\n"); |
1204 | error = -ENOMEM; | |
1205 | break; | |
1206 | } | |
1207 | ||
01ac25b5 | 1208 | info = ch->info; |
6011bdea | 1209 | var = &info->var; |
cfb4f5d1 | 1210 | info->fbops = &sh_mobile_lcdc_ops; |
c44f9f76 | 1211 | info->par = ch; |
dd210503 GL |
1212 | |
1213 | mutex_init(&ch->open_lock); | |
1214 | ||
c44f9f76 GL |
1215 | for (k = 0, lcd_cfg = mode; |
1216 | k < cfg->num_cfg && lcd_cfg; | |
71d3b0fc GL |
1217 | k++, lcd_cfg++) { |
1218 | unsigned long size = lcd_cfg->yres * lcd_cfg->xres; | |
1219 | ||
1220 | if (size > max_size) { | |
1221 | max_cfg = lcd_cfg; | |
1222 | max_size = size; | |
1223 | } | |
1224 | } | |
1225 | ||
c44f9f76 GL |
1226 | if (!mode) |
1227 | max_size = DEFAULT_XRES * DEFAULT_YRES; | |
1228 | else if (max_cfg) | |
1229 | dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n", | |
1230 | max_cfg->xres, max_cfg->yres); | |
71d3b0fc | 1231 | |
cfb4f5d1 | 1232 | info->fix = sh_mobile_lcdc_fix; |
71d3b0fc | 1233 | info->fix.smem_len = max_size * (cfg->bpp / 8) * 2; |
cfb4f5d1 | 1234 | |
c44f9f76 GL |
1235 | if (!mode) |
1236 | mode = &default_720p; | |
1237 | ||
1238 | fb_videomode_to_var(var, mode); | |
9dd38819 | 1239 | /* Default Y virtual resolution is 2x panel size */ |
6011bdea | 1240 | var->yres_virtual = var->yres * 2; |
6011bdea | 1241 | var->activate = FB_ACTIVATE_NOW; |
6011bdea GL |
1242 | |
1243 | error = sh_mobile_lcdc_set_bpp(var, cfg->bpp); | |
cfb4f5d1 MD |
1244 | if (error) |
1245 | break; | |
1246 | ||
cfb4f5d1 | 1247 | buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, |
01ac25b5 | 1248 | &ch->dma_handle, GFP_KERNEL); |
cfb4f5d1 MD |
1249 | if (!buf) { |
1250 | dev_err(&pdev->dev, "unable to allocate buffer\n"); | |
1251 | error = -ENOMEM; | |
1252 | break; | |
1253 | } | |
1254 | ||
01ac25b5 | 1255 | info->pseudo_palette = &ch->pseudo_palette; |
cfb4f5d1 MD |
1256 | info->flags = FBINFO_FLAG_DEFAULT; |
1257 | ||
1258 | error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); | |
1259 | if (error < 0) { | |
1260 | dev_err(&pdev->dev, "unable to allocate cmap\n"); | |
1261 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
01ac25b5 | 1262 | buf, ch->dma_handle); |
cfb4f5d1 MD |
1263 | break; |
1264 | } | |
1265 | ||
01ac25b5 | 1266 | info->fix.smem_start = ch->dma_handle; |
c44f9f76 | 1267 | info->fix.line_length = var->xres * (cfg->bpp / 8); |
cfb4f5d1 MD |
1268 | info->screen_base = buf; |
1269 | info->device = &pdev->dev; | |
1c120deb | 1270 | ch->display_var = *var; |
cfb4f5d1 MD |
1271 | } |
1272 | ||
1273 | if (error) | |
1274 | goto err1; | |
1275 | ||
1276 | error = sh_mobile_lcdc_start(priv); | |
1277 | if (error) { | |
1278 | dev_err(&pdev->dev, "unable to start hardware\n"); | |
1279 | goto err1; | |
1280 | } | |
1281 | ||
1282 | for (i = 0; i < j; i++) { | |
1c6a307a | 1283 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
c44f9f76 GL |
1284 | const struct fb_videomode *mode = ch->cfg.lcd_cfg; |
1285 | ||
1286 | if (!mode) | |
1287 | mode = &default_720p; | |
1c6a307a | 1288 | |
e33afddc | 1289 | info = ch->info; |
1c6a307a PM |
1290 | |
1291 | if (info->fbdefio) { | |
8bed9055 | 1292 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
1c6a307a | 1293 | info->fix.smem_len >> PAGE_SHIFT); |
8bed9055 | 1294 | if (!ch->sglist) { |
1c6a307a PM |
1295 | dev_err(&pdev->dev, "cannot allocate sglist\n"); |
1296 | goto err1; | |
1297 | } | |
1298 | } | |
1299 | ||
c44f9f76 | 1300 | fb_videomode_to_modelist(mode, ch->cfg.num_cfg, &info->modelist); |
1c6a307a | 1301 | error = register_framebuffer(info); |
cfb4f5d1 MD |
1302 | if (error < 0) |
1303 | goto err1; | |
cfb4f5d1 | 1304 | |
cfb4f5d1 MD |
1305 | dev_info(info->dev, |
1306 | "registered %s/%s as %dx%d %dbpp.\n", | |
1307 | pdev->name, | |
1c6a307a | 1308 | (ch->cfg.chan == LCDC_CHAN_MAINLCD) ? |
cfb4f5d1 | 1309 | "mainlcd" : "sublcd", |
c44f9f76 | 1310 | info->var.xres, info->var.yres, |
1c6a307a | 1311 | ch->cfg.bpp); |
8564557a MD |
1312 | |
1313 | /* deferred io mode: disable clock to save power */ | |
6011bdea | 1314 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
8564557a | 1315 | sh_mobile_lcdc_clk_off(priv); |
cfb4f5d1 MD |
1316 | } |
1317 | ||
6011bdea GL |
1318 | /* Failure ignored */ |
1319 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; | |
1320 | fb_register_client(&priv->notifier); | |
1321 | ||
cfb4f5d1 | 1322 | return 0; |
8bed9055 | 1323 | err1: |
cfb4f5d1 | 1324 | sh_mobile_lcdc_remove(pdev); |
8bed9055 | 1325 | |
cfb4f5d1 MD |
1326 | return error; |
1327 | } | |
1328 | ||
1329 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) | |
1330 | { | |
1331 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); | |
1332 | struct fb_info *info; | |
1333 | int i; | |
1334 | ||
6011bdea GL |
1335 | fb_unregister_client(&priv->notifier); |
1336 | ||
cfb4f5d1 | 1337 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) |
8bed9055 | 1338 | if (priv->ch[i].info && priv->ch[i].info->dev) |
e33afddc | 1339 | unregister_framebuffer(priv->ch[i].info); |
cfb4f5d1 MD |
1340 | |
1341 | sh_mobile_lcdc_stop(priv); | |
1342 | ||
1343 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
e33afddc | 1344 | info = priv->ch[i].info; |
cfb4f5d1 | 1345 | |
e33afddc | 1346 | if (!info || !info->device) |
cfb4f5d1 MD |
1347 | continue; |
1348 | ||
1c6a307a PM |
1349 | if (priv->ch[i].sglist) |
1350 | vfree(priv->ch[i].sglist); | |
1351 | ||
1ffbb037 MD |
1352 | if (info->screen_base) |
1353 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
1354 | info->screen_base, | |
1355 | priv->ch[i].dma_handle); | |
cfb4f5d1 | 1356 | fb_dealloc_cmap(&info->cmap); |
e33afddc | 1357 | framebuffer_release(info); |
cfb4f5d1 MD |
1358 | } |
1359 | ||
b51339ff MD |
1360 | if (priv->dot_clk) |
1361 | clk_put(priv->dot_clk); | |
0246c471 | 1362 | |
8bed9055 GL |
1363 | if (priv->dev) |
1364 | pm_runtime_disable(priv->dev); | |
cfb4f5d1 MD |
1365 | |
1366 | if (priv->base) | |
1367 | iounmap(priv->base); | |
1368 | ||
8564557a MD |
1369 | if (priv->irq) |
1370 | free_irq(priv->irq, priv); | |
cfb4f5d1 MD |
1371 | kfree(priv); |
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | static struct platform_driver sh_mobile_lcdc_driver = { | |
1376 | .driver = { | |
1377 | .name = "sh_mobile_lcdc_fb", | |
1378 | .owner = THIS_MODULE, | |
2feb075a | 1379 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
cfb4f5d1 MD |
1380 | }, |
1381 | .probe = sh_mobile_lcdc_probe, | |
1382 | .remove = sh_mobile_lcdc_remove, | |
1383 | }; | |
1384 | ||
1385 | static int __init sh_mobile_lcdc_init(void) | |
1386 | { | |
1387 | return platform_driver_register(&sh_mobile_lcdc_driver); | |
1388 | } | |
1389 | ||
1390 | static void __exit sh_mobile_lcdc_exit(void) | |
1391 | { | |
1392 | platform_driver_unregister(&sh_mobile_lcdc_driver); | |
1393 | } | |
1394 | ||
1395 | module_init(sh_mobile_lcdc_init); | |
1396 | module_exit(sh_mobile_lcdc_exit); | |
1397 | ||
1398 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); | |
1399 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); | |
1400 | MODULE_LICENSE("GPL v2"); |