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 | ||
5ae0cf82 GL |
118 | .left_margin = 220, |
119 | .right_margin = 110, | |
120 | .hsync_len = 40, | |
c44f9f76 GL |
121 | |
122 | .upper_margin = 20, | |
123 | .lower_margin = 5, | |
124 | .vsync_len = 5, | |
125 | ||
126 | .pixclock = 13468, | |
5ae0cf82 | 127 | .refresh = 60, |
c44f9f76 | 128 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, |
0246c471 MD |
129 | }; |
130 | ||
131 | struct sh_mobile_lcdc_priv { | |
132 | void __iomem *base; | |
133 | int irq; | |
134 | atomic_t hw_usecnt; | |
135 | struct device *dev; | |
136 | struct clk *dot_clk; | |
137 | unsigned long lddckr; | |
138 | struct sh_mobile_lcdc_chan ch[2]; | |
6011bdea | 139 | struct notifier_block notifier; |
0246c471 MD |
140 | unsigned long saved_shared_regs[NR_SHARED_REGS]; |
141 | int started; | |
142 | }; | |
143 | ||
a6f15ade PE |
144 | static bool banked(int reg_nr) |
145 | { | |
146 | switch (reg_nr) { | |
147 | case LDMT1R: | |
148 | case LDMT2R: | |
149 | case LDMT3R: | |
150 | case LDDFR: | |
151 | case LDSM1R: | |
152 | case LDSA1R: | |
153 | case LDMLSR: | |
154 | case LDHCNR: | |
155 | case LDHSYNR: | |
156 | case LDVLNR: | |
157 | case LDVSYNR: | |
158 | return true; | |
159 | } | |
160 | return false; | |
161 | } | |
162 | ||
cfb4f5d1 MD |
163 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
164 | int reg_nr, unsigned long data) | |
165 | { | |
166 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); | |
a6f15ade PE |
167 | if (banked(reg_nr)) |
168 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
169 | SIDE_B_OFFSET); | |
170 | } | |
171 | ||
172 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, | |
173 | int reg_nr, unsigned long data) | |
174 | { | |
175 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
176 | MIRROR_OFFSET); | |
cfb4f5d1 MD |
177 | } |
178 | ||
179 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, | |
180 | int reg_nr) | |
181 | { | |
182 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); | |
183 | } | |
184 | ||
185 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, | |
186 | unsigned long reg_offs, unsigned long data) | |
187 | { | |
188 | iowrite32(data, priv->base + reg_offs); | |
189 | } | |
190 | ||
191 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, | |
192 | unsigned long reg_offs) | |
193 | { | |
194 | return ioread32(priv->base + reg_offs); | |
195 | } | |
196 | ||
197 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, | |
198 | unsigned long reg_offs, | |
199 | unsigned long mask, unsigned long until) | |
200 | { | |
201 | while ((lcdc_read(priv, reg_offs) & mask) != until) | |
202 | cpu_relax(); | |
203 | } | |
204 | ||
205 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) | |
206 | { | |
207 | return chan->cfg.chan == LCDC_CHAN_SUBLCD; | |
208 | } | |
209 | ||
210 | static void lcdc_sys_write_index(void *handle, unsigned long data) | |
211 | { | |
212 | struct sh_mobile_lcdc_chan *ch = handle; | |
213 | ||
214 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x10000000); | |
215 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
216 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 217 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
218 | } |
219 | ||
220 | static void lcdc_sys_write_data(void *handle, unsigned long data) | |
221 | { | |
222 | struct sh_mobile_lcdc_chan *ch = handle; | |
223 | ||
224 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x11000000); | |
225 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
226 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 227 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
228 | } |
229 | ||
230 | static unsigned long lcdc_sys_read_data(void *handle) | |
231 | { | |
232 | struct sh_mobile_lcdc_chan *ch = handle; | |
233 | ||
234 | lcdc_write(ch->lcdc, _LDDRDR, 0x01000000); | |
235 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
236 | lcdc_write(ch->lcdc, _LDDRAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
237 | udelay(1); | |
909f10de | 238 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 | 239 | |
ec56b66f | 240 | return lcdc_read(ch->lcdc, _LDDRDR) & 0x3ffff; |
cfb4f5d1 MD |
241 | } |
242 | ||
243 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { | |
244 | lcdc_sys_write_index, | |
245 | lcdc_sys_write_data, | |
246 | lcdc_sys_read_data, | |
247 | }; | |
248 | ||
8564557a MD |
249 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
250 | { | |
0246c471 MD |
251 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
252 | pm_runtime_get_sync(priv->dev); | |
8564557a MD |
253 | if (priv->dot_clk) |
254 | clk_enable(priv->dot_clk); | |
255 | } | |
256 | } | |
257 | ||
258 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) | |
259 | { | |
0246c471 | 260 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
8564557a MD |
261 | if (priv->dot_clk) |
262 | clk_disable(priv->dot_clk); | |
0246c471 | 263 | pm_runtime_put(priv->dev); |
8564557a MD |
264 | } |
265 | } | |
8564557a | 266 | |
1c6a307a PM |
267 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
268 | struct list_head *pagelist) | |
269 | { | |
270 | struct sh_mobile_lcdc_chan *ch = info->par; | |
271 | unsigned int nr_pages_max = info->fix.smem_len >> PAGE_SHIFT; | |
272 | struct page *page; | |
273 | int nr_pages = 0; | |
274 | ||
275 | sg_init_table(ch->sglist, nr_pages_max); | |
276 | ||
277 | list_for_each_entry(page, pagelist, lru) | |
278 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); | |
279 | ||
280 | return nr_pages; | |
281 | } | |
282 | ||
8564557a MD |
283 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
284 | struct list_head *pagelist) | |
285 | { | |
286 | struct sh_mobile_lcdc_chan *ch = info->par; | |
ef61aae4 | 287 | struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg; |
8564557a MD |
288 | |
289 | /* enable clocks before accessing hardware */ | |
290 | sh_mobile_lcdc_clk_on(ch->lcdc); | |
291 | ||
5c1a56b5 PM |
292 | /* |
293 | * It's possible to get here without anything on the pagelist via | |
294 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() | |
295 | * invocation. In the former case, the acceleration routines are | |
296 | * stepped in to when using the framebuffer console causing the | |
297 | * workqueue to be scheduled without any dirty pages on the list. | |
298 | * | |
299 | * Despite this, a panel update is still needed given that the | |
300 | * acceleration routines have their own methods for writing in | |
301 | * that still need to be updated. | |
302 | * | |
303 | * The fsync() and empty pagelist case could be optimized for, | |
304 | * but we don't bother, as any application exhibiting such | |
305 | * behaviour is fundamentally broken anyways. | |
306 | */ | |
307 | if (!list_empty(pagelist)) { | |
308 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); | |
309 | ||
310 | /* trigger panel update */ | |
311 | dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
312 | if (bcfg->start_transfer) |
313 | bcfg->start_transfer(bcfg->board_data, ch, | |
314 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 PM |
315 | lcdc_write_chan(ch, LDSM2R, 1); |
316 | dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
317 | } else { |
318 | if (bcfg->start_transfer) | |
319 | bcfg->start_transfer(bcfg->board_data, ch, | |
320 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 | 321 | lcdc_write_chan(ch, LDSM2R, 1); |
ef61aae4 | 322 | } |
8564557a MD |
323 | } |
324 | ||
325 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) | |
326 | { | |
327 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
328 | ||
329 | if (fbdefio) | |
330 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); | |
331 | } | |
332 | ||
333 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) | |
334 | { | |
335 | struct sh_mobile_lcdc_priv *priv = data; | |
2feb075a | 336 | struct sh_mobile_lcdc_chan *ch; |
8564557a | 337 | unsigned long tmp; |
9dd38819 | 338 | unsigned long ldintr; |
2feb075a MD |
339 | int is_sub; |
340 | int k; | |
8564557a MD |
341 | |
342 | /* acknowledge interrupt */ | |
9dd38819 PE |
343 | ldintr = tmp = lcdc_read(priv, _LDINTR); |
344 | /* | |
345 | * disable further VSYNC End IRQs, preserve all other enabled IRQs, | |
346 | * write 0 to bits 0-6 to ack all triggered IRQs. | |
347 | */ | |
348 | tmp &= 0xffffff00 & ~LDINTR_VEE; | |
8564557a MD |
349 | lcdc_write(priv, _LDINTR, tmp); |
350 | ||
2feb075a MD |
351 | /* figure out if this interrupt is for main or sub lcd */ |
352 | is_sub = (lcdc_read(priv, _LDSR) & (1 << 10)) ? 1 : 0; | |
353 | ||
9dd38819 | 354 | /* wake up channel and disable clocks */ |
2feb075a MD |
355 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
356 | ch = &priv->ch[k]; | |
357 | ||
358 | if (!ch->enabled) | |
359 | continue; | |
360 | ||
9dd38819 PE |
361 | /* Frame Start */ |
362 | if (ldintr & LDINTR_FS) { | |
363 | if (is_sub == lcdc_chan_is_sublcd(ch)) { | |
364 | ch->frame_end = 1; | |
365 | wake_up(&ch->frame_end_wait); | |
2feb075a | 366 | |
9dd38819 PE |
367 | sh_mobile_lcdc_clk_off(priv); |
368 | } | |
369 | } | |
370 | ||
371 | /* VSYNC End */ | |
40331b21 PE |
372 | if (ldintr & LDINTR_VES) |
373 | complete(&ch->vsync_completion); | |
2feb075a MD |
374 | } |
375 | ||
8564557a MD |
376 | return IRQ_HANDLED; |
377 | } | |
378 | ||
cfb4f5d1 MD |
379 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
380 | int start) | |
381 | { | |
382 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); | |
383 | int k; | |
384 | ||
385 | /* start or stop the lcdc */ | |
386 | if (start) | |
387 | lcdc_write(priv, _LDCNT2R, tmp | START_LCDC); | |
388 | else | |
389 | lcdc_write(priv, _LDCNT2R, tmp & ~START_LCDC); | |
390 | ||
391 | /* wait until power is applied/stopped on all channels */ | |
392 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
393 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) | |
394 | while (1) { | |
395 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) & 3; | |
396 | if (start && tmp == 3) | |
397 | break; | |
398 | if (!start && tmp == 0) | |
399 | break; | |
400 | cpu_relax(); | |
401 | } | |
402 | ||
403 | if (!start) | |
404 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ | |
405 | } | |
406 | ||
6011bdea GL |
407 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
408 | { | |
1c120deb GL |
409 | struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var; |
410 | unsigned long h_total, hsync_pos, display_h_total; | |
6011bdea GL |
411 | u32 tmp; |
412 | ||
413 | tmp = ch->ldmt1r_value; | |
414 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; | |
415 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; | |
416 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; | |
417 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; | |
418 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; | |
419 | tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; | |
420 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0; | |
421 | lcdc_write_chan(ch, LDMT1R, tmp); | |
422 | ||
423 | /* setup SYS bus */ | |
424 | lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); | |
425 | lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); | |
426 | ||
427 | /* horizontal configuration */ | |
1c120deb GL |
428 | h_total = display_var->xres + display_var->hsync_len + |
429 | display_var->left_margin + display_var->right_margin; | |
6011bdea | 430 | tmp = h_total / 8; /* HTCN */ |
1c120deb | 431 | tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */ |
6011bdea GL |
432 | lcdc_write_chan(ch, LDHCNR, tmp); |
433 | ||
1c120deb | 434 | hsync_pos = display_var->xres + display_var->right_margin; |
6011bdea | 435 | tmp = hsync_pos / 8; /* HSYNP */ |
1c120deb | 436 | tmp |= (display_var->hsync_len / 8) << 16; /* HSYNW */ |
6011bdea GL |
437 | lcdc_write_chan(ch, LDHSYNR, tmp); |
438 | ||
439 | /* vertical configuration */ | |
1c120deb GL |
440 | tmp = display_var->yres + display_var->vsync_len + |
441 | display_var->upper_margin + display_var->lower_margin; /* VTLN */ | |
442 | tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */ | |
6011bdea GL |
443 | lcdc_write_chan(ch, LDVLNR, tmp); |
444 | ||
1c120deb GL |
445 | tmp = display_var->yres + display_var->lower_margin; /* VSYNP */ |
446 | tmp |= display_var->vsync_len << 16; /* VSYNW */ | |
6011bdea GL |
447 | lcdc_write_chan(ch, LDVSYNR, tmp); |
448 | ||
449 | /* Adjust horizontal synchronisation for HDMI */ | |
1c120deb GL |
450 | display_h_total = display_var->xres + display_var->hsync_len + |
451 | display_var->left_margin + display_var->right_margin; | |
452 | tmp = ((display_var->xres & 7) << 24) | | |
453 | ((display_h_total & 7) << 16) | | |
454 | ((display_var->hsync_len & 7) << 8) | | |
6011bdea GL |
455 | hsync_pos; |
456 | lcdc_write_chan(ch, LDHAJR, tmp); | |
457 | } | |
458 | ||
cfb4f5d1 MD |
459 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
460 | { | |
461 | struct sh_mobile_lcdc_chan *ch; | |
cfb4f5d1 MD |
462 | struct sh_mobile_lcdc_board_cfg *board_cfg; |
463 | unsigned long tmp; | |
464 | int k, m; | |
465 | int ret = 0; | |
466 | ||
8564557a MD |
467 | /* enable clocks before accessing the hardware */ |
468 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
469 | if (priv->ch[k].enabled) | |
470 | sh_mobile_lcdc_clk_on(priv); | |
471 | ||
cfb4f5d1 MD |
472 | /* reset */ |
473 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LCDC_RESET); | |
474 | lcdc_wait_bit(priv, _LDCNT2R, LCDC_RESET, 0); | |
475 | ||
476 | /* enable LCDC channels */ | |
477 | tmp = lcdc_read(priv, _LDCNT2R); | |
478 | tmp |= priv->ch[0].enabled; | |
479 | tmp |= priv->ch[1].enabled; | |
480 | lcdc_write(priv, _LDCNT2R, tmp); | |
481 | ||
482 | /* read data from external memory, avoid using the BEU for now */ | |
483 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) & ~DISPLAY_BEU); | |
484 | ||
485 | /* stop the lcdc first */ | |
486 | sh_mobile_lcdc_start_stop(priv, 0); | |
487 | ||
488 | /* configure clocks */ | |
489 | tmp = priv->lddckr; | |
490 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
491 | ch = &priv->ch[k]; | |
492 | ||
493 | if (!priv->ch[k].enabled) | |
494 | continue; | |
495 | ||
496 | m = ch->cfg.clock_divider; | |
497 | if (!m) | |
498 | continue; | |
499 | ||
500 | if (m == 1) | |
501 | m = 1 << 6; | |
502 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); | |
503 | ||
dd210503 | 504 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider denominator */ |
1c120deb | 505 | lcdc_write_chan(ch, LDDCKPAT1R, 0); |
cfb4f5d1 MD |
506 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); |
507 | } | |
508 | ||
509 | lcdc_write(priv, _LDDCKR, tmp); | |
510 | ||
511 | /* start dotclock again */ | |
512 | lcdc_write(priv, _LDDCKSTPR, 0); | |
513 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); | |
514 | ||
8564557a | 515 | /* interrupts are disabled to begin with */ |
cfb4f5d1 MD |
516 | lcdc_write(priv, _LDINTR, 0); |
517 | ||
518 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
519 | ch = &priv->ch[k]; | |
cfb4f5d1 MD |
520 | |
521 | if (!ch->enabled) | |
522 | continue; | |
523 | ||
6011bdea | 524 | sh_mobile_lcdc_geometry(ch); |
cfb4f5d1 MD |
525 | |
526 | /* power supply */ | |
527 | lcdc_write_chan(ch, LDPMR, 0); | |
528 | ||
cfb4f5d1 MD |
529 | board_cfg = &ch->cfg.board_cfg; |
530 | if (board_cfg->setup_sys) | |
531 | ret = board_cfg->setup_sys(board_cfg->board_data, ch, | |
532 | &sh_mobile_lcdc_sys_bus_ops); | |
533 | if (ret) | |
534 | return ret; | |
535 | } | |
536 | ||
cfb4f5d1 MD |
537 | /* word and long word swap */ |
538 | lcdc_write(priv, _LDDDSR, lcdc_read(priv, _LDDDSR) | 6); | |
539 | ||
540 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
541 | ch = &priv->ch[k]; | |
542 | ||
543 | if (!priv->ch[k].enabled) | |
544 | continue; | |
545 | ||
546 | /* set bpp format in PKF[4:0] */ | |
547 | tmp = lcdc_read_chan(ch, LDDFR); | |
1c120deb | 548 | tmp &= ~0x0001001f; |
e33afddc | 549 | tmp |= (ch->info->var.bits_per_pixel == 16) ? 3 : 0; |
cfb4f5d1 MD |
550 | lcdc_write_chan(ch, LDDFR, tmp); |
551 | ||
552 | /* point out our frame buffer */ | |
e33afddc | 553 | lcdc_write_chan(ch, LDSA1R, ch->info->fix.smem_start); |
cfb4f5d1 MD |
554 | |
555 | /* set line size */ | |
e33afddc | 556 | lcdc_write_chan(ch, LDMLSR, ch->info->fix.line_length); |
cfb4f5d1 | 557 | |
8564557a MD |
558 | /* setup deferred io if SYS bus */ |
559 | tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; | |
560 | if (ch->ldmt1r_value & (1 << 12) && tmp) { | |
561 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; | |
562 | ch->defio.delay = msecs_to_jiffies(tmp); | |
e33afddc PM |
563 | ch->info->fbdefio = &ch->defio; |
564 | fb_deferred_io_init(ch->info); | |
8564557a MD |
565 | |
566 | /* one-shot mode */ | |
567 | lcdc_write_chan(ch, LDSM1R, 1); | |
568 | ||
569 | /* enable "Frame End Interrupt Enable" bit */ | |
570 | lcdc_write(priv, _LDINTR, LDINTR_FE); | |
571 | ||
572 | } else { | |
573 | /* continuous read mode */ | |
574 | lcdc_write_chan(ch, LDSM1R, 0); | |
575 | } | |
cfb4f5d1 MD |
576 | } |
577 | ||
578 | /* display output */ | |
579 | lcdc_write(priv, _LDCNT1R, LCDC_ENABLE); | |
580 | ||
581 | /* start the lcdc */ | |
582 | sh_mobile_lcdc_start_stop(priv, 1); | |
8e9bb19e | 583 | priv->started = 1; |
cfb4f5d1 MD |
584 | |
585 | /* tell the board code to enable the panel */ | |
586 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
587 | ch = &priv->ch[k]; | |
21bc1f02 MD |
588 | if (!ch->enabled) |
589 | continue; | |
590 | ||
cfb4f5d1 | 591 | board_cfg = &ch->cfg.board_cfg; |
6de9edd5 | 592 | if (try_module_get(board_cfg->owner) && board_cfg->display_on) { |
c2439398 | 593 | board_cfg->display_on(board_cfg->board_data, ch->info); |
6de9edd5 GL |
594 | module_put(board_cfg->owner); |
595 | } | |
cfb4f5d1 MD |
596 | } |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
601 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) | |
602 | { | |
603 | struct sh_mobile_lcdc_chan *ch; | |
604 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
605 | int k; | |
606 | ||
2feb075a | 607 | /* clean up deferred io and ask board code to disable panel */ |
cfb4f5d1 MD |
608 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
609 | ch = &priv->ch[k]; | |
21bc1f02 MD |
610 | if (!ch->enabled) |
611 | continue; | |
8564557a | 612 | |
2feb075a MD |
613 | /* deferred io mode: |
614 | * flush frame, and wait for frame end interrupt | |
615 | * clean up deferred io and enable clock | |
616 | */ | |
5ef6b505 | 617 | if (ch->info && ch->info->fbdefio) { |
2feb075a | 618 | ch->frame_end = 0; |
e33afddc | 619 | schedule_delayed_work(&ch->info->deferred_work, 0); |
2feb075a | 620 | wait_event(ch->frame_end_wait, ch->frame_end); |
e33afddc PM |
621 | fb_deferred_io_cleanup(ch->info); |
622 | ch->info->fbdefio = NULL; | |
2feb075a | 623 | sh_mobile_lcdc_clk_on(priv); |
8564557a | 624 | } |
2feb075a MD |
625 | |
626 | board_cfg = &ch->cfg.board_cfg; | |
6de9edd5 | 627 | if (try_module_get(board_cfg->owner) && board_cfg->display_off) { |
2feb075a | 628 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
629 | module_put(board_cfg->owner); |
630 | } | |
cfb4f5d1 MD |
631 | } |
632 | ||
633 | /* stop the lcdc */ | |
8e9bb19e MD |
634 | if (priv->started) { |
635 | sh_mobile_lcdc_start_stop(priv, 0); | |
636 | priv->started = 0; | |
637 | } | |
b51339ff | 638 | |
8564557a MD |
639 | /* stop clocks */ |
640 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
641 | if (priv->ch[k].enabled) | |
642 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
643 | } |
644 | ||
645 | static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) | |
646 | { | |
647 | int ifm, miftyp; | |
648 | ||
649 | switch (ch->cfg.interface_type) { | |
650 | case RGB8: ifm = 0; miftyp = 0; break; | |
651 | case RGB9: ifm = 0; miftyp = 4; break; | |
652 | case RGB12A: ifm = 0; miftyp = 5; break; | |
653 | case RGB12B: ifm = 0; miftyp = 6; break; | |
654 | case RGB16: ifm = 0; miftyp = 7; break; | |
655 | case RGB18: ifm = 0; miftyp = 10; break; | |
656 | case RGB24: ifm = 0; miftyp = 11; break; | |
657 | case SYS8A: ifm = 1; miftyp = 0; break; | |
658 | case SYS8B: ifm = 1; miftyp = 1; break; | |
659 | case SYS8C: ifm = 1; miftyp = 2; break; | |
660 | case SYS8D: ifm = 1; miftyp = 3; break; | |
661 | case SYS9: ifm = 1; miftyp = 4; break; | |
662 | case SYS12: ifm = 1; miftyp = 5; break; | |
663 | case SYS16A: ifm = 1; miftyp = 7; break; | |
664 | case SYS16B: ifm = 1; miftyp = 8; break; | |
665 | case SYS16C: ifm = 1; miftyp = 9; break; | |
666 | case SYS18: ifm = 1; miftyp = 10; break; | |
667 | case SYS24: ifm = 1; miftyp = 11; break; | |
668 | default: goto bad; | |
669 | } | |
670 | ||
671 | /* SUBLCD only supports SYS interface */ | |
672 | if (lcdc_chan_is_sublcd(ch)) { | |
673 | if (ifm == 0) | |
674 | goto bad; | |
675 | else | |
676 | ifm = 0; | |
677 | } | |
678 | ||
679 | ch->ldmt1r_value = (ifm << 12) | miftyp; | |
680 | return 0; | |
681 | bad: | |
682 | return -EINVAL; | |
683 | } | |
684 | ||
b51339ff MD |
685 | static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, |
686 | int clock_source, | |
cfb4f5d1 MD |
687 | struct sh_mobile_lcdc_priv *priv) |
688 | { | |
689 | char *str; | |
690 | int icksel; | |
691 | ||
692 | switch (clock_source) { | |
693 | case LCDC_CLK_BUS: str = "bus_clk"; icksel = 0; break; | |
694 | case LCDC_CLK_PERIPHERAL: str = "peripheral_clk"; icksel = 1; break; | |
695 | case LCDC_CLK_EXTERNAL: str = NULL; icksel = 2; break; | |
696 | default: | |
697 | return -EINVAL; | |
698 | } | |
699 | ||
700 | priv->lddckr = icksel << 16; | |
701 | ||
702 | if (str) { | |
b51339ff MD |
703 | priv->dot_clk = clk_get(&pdev->dev, str); |
704 | if (IS_ERR(priv->dot_clk)) { | |
705 | dev_err(&pdev->dev, "cannot get dot clock %s\n", str); | |
b51339ff | 706 | return PTR_ERR(priv->dot_clk); |
cfb4f5d1 | 707 | } |
cfb4f5d1 | 708 | } |
0246c471 MD |
709 | |
710 | /* Runtime PM support involves two step for this driver: | |
711 | * 1) Enable Runtime PM | |
712 | * 2) Force Runtime PM Resume since hardware is accessed from probe() | |
713 | */ | |
8bed9055 | 714 | priv->dev = &pdev->dev; |
0246c471 MD |
715 | pm_runtime_enable(priv->dev); |
716 | pm_runtime_resume(priv->dev); | |
cfb4f5d1 MD |
717 | return 0; |
718 | } | |
719 | ||
720 | static int sh_mobile_lcdc_setcolreg(u_int regno, | |
721 | u_int red, u_int green, u_int blue, | |
722 | u_int transp, struct fb_info *info) | |
723 | { | |
724 | u32 *palette = info->pseudo_palette; | |
725 | ||
726 | if (regno >= PALETTE_NR) | |
727 | return -EINVAL; | |
728 | ||
729 | /* only FB_VISUAL_TRUECOLOR supported */ | |
730 | ||
731 | red >>= 16 - info->var.red.length; | |
732 | green >>= 16 - info->var.green.length; | |
733 | blue >>= 16 - info->var.blue.length; | |
734 | transp >>= 16 - info->var.transp.length; | |
735 | ||
736 | palette[regno] = (red << info->var.red.offset) | | |
737 | (green << info->var.green.offset) | | |
738 | (blue << info->var.blue.offset) | | |
739 | (transp << info->var.transp.offset); | |
740 | ||
741 | return 0; | |
742 | } | |
743 | ||
744 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { | |
745 | .id = "SH Mobile LCDC", | |
746 | .type = FB_TYPE_PACKED_PIXELS, | |
747 | .visual = FB_VISUAL_TRUECOLOR, | |
748 | .accel = FB_ACCEL_NONE, | |
9dd38819 PE |
749 | .xpanstep = 0, |
750 | .ypanstep = 1, | |
751 | .ywrapstep = 0, | |
cfb4f5d1 MD |
752 | }; |
753 | ||
8564557a MD |
754 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
755 | const struct fb_fillrect *rect) | |
756 | { | |
757 | sys_fillrect(info, rect); | |
758 | sh_mobile_lcdc_deferred_io_touch(info); | |
759 | } | |
760 | ||
761 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, | |
762 | const struct fb_copyarea *area) | |
763 | { | |
764 | sys_copyarea(info, area); | |
765 | sh_mobile_lcdc_deferred_io_touch(info); | |
766 | } | |
767 | ||
768 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, | |
769 | const struct fb_image *image) | |
770 | { | |
771 | sys_imageblit(info, image); | |
772 | sh_mobile_lcdc_deferred_io_touch(info); | |
773 | } | |
774 | ||
9dd38819 PE |
775 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
776 | struct fb_info *info) | |
777 | { | |
778 | struct sh_mobile_lcdc_chan *ch = info->par; | |
92e1f9a7 PE |
779 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
780 | unsigned long ldrcntr; | |
781 | unsigned long new_pan_offset; | |
782 | ||
783 | new_pan_offset = (var->yoffset * info->fix.line_length) + | |
784 | (var->xoffset * (info->var.bits_per_pixel / 8)); | |
9dd38819 | 785 | |
92e1f9a7 | 786 | if (new_pan_offset == ch->pan_offset) |
9dd38819 PE |
787 | return 0; /* No change, do nothing */ |
788 | ||
92e1f9a7 | 789 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
9dd38819 | 790 | |
92e1f9a7 PE |
791 | /* Set the source address for the next refresh */ |
792 | lcdc_write_chan_mirror(ch, LDSA1R, ch->dma_handle + new_pan_offset); | |
793 | if (lcdc_chan_is_sublcd(ch)) | |
794 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); | |
795 | else | |
796 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); | |
797 | ||
798 | ch->pan_offset = new_pan_offset; | |
799 | ||
800 | sh_mobile_lcdc_deferred_io_touch(info); | |
9dd38819 PE |
801 | |
802 | return 0; | |
803 | } | |
804 | ||
40331b21 PE |
805 | static int sh_mobile_wait_for_vsync(struct fb_info *info) |
806 | { | |
807 | struct sh_mobile_lcdc_chan *ch = info->par; | |
808 | unsigned long ldintr; | |
809 | int ret; | |
810 | ||
811 | /* Enable VSync End interrupt */ | |
812 | ldintr = lcdc_read(ch->lcdc, _LDINTR); | |
813 | ldintr |= LDINTR_VEE; | |
814 | lcdc_write(ch->lcdc, _LDINTR, ldintr); | |
815 | ||
816 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, | |
817 | msecs_to_jiffies(100)); | |
818 | if (!ret) | |
819 | return -ETIMEDOUT; | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd, | |
825 | unsigned long arg) | |
826 | { | |
827 | int retval; | |
828 | ||
829 | switch (cmd) { | |
830 | case FBIO_WAITFORVSYNC: | |
831 | retval = sh_mobile_wait_for_vsync(info); | |
832 | break; | |
833 | ||
834 | default: | |
835 | retval = -ENOIOCTLCMD; | |
836 | break; | |
837 | } | |
838 | return retval; | |
839 | } | |
840 | ||
dd210503 GL |
841 | static void sh_mobile_fb_reconfig(struct fb_info *info) |
842 | { | |
843 | struct sh_mobile_lcdc_chan *ch = info->par; | |
844 | struct fb_videomode mode1, mode2; | |
845 | struct fb_event event; | |
846 | int evnt = FB_EVENT_MODE_CHANGE_ALL; | |
847 | ||
848 | if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) | |
849 | /* More framebuffer users are active */ | |
850 | return; | |
851 | ||
852 | fb_var_to_videomode(&mode1, &ch->display_var); | |
853 | fb_var_to_videomode(&mode2, &info->var); | |
854 | ||
855 | if (fb_mode_is_equal(&mode1, &mode2)) | |
856 | return; | |
857 | ||
858 | /* Display has been re-plugged, framebuffer is free now, reconfigure */ | |
859 | if (fb_set_var(info, &ch->display_var) < 0) | |
860 | /* Couldn't reconfigure, hopefully, can continue as before */ | |
861 | return; | |
862 | ||
cc267ec5 | 863 | info->fix.line_length = mode1.xres * (ch->cfg.bpp / 8); |
dd210503 GL |
864 | |
865 | /* | |
866 | * fb_set_var() calls the notifier change internally, only if | |
867 | * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a | |
868 | * user event, we have to call the chain ourselves. | |
869 | */ | |
870 | event.info = info; | |
cc267ec5 | 871 | event.data = &mode1; |
dd210503 GL |
872 | fb_notifier_call_chain(evnt, &event); |
873 | } | |
874 | ||
875 | /* | |
876 | * Locking: both .fb_release() and .fb_open() are called with info->lock held if | |
877 | * user == 1, or with console sem held, if user == 0. | |
878 | */ | |
879 | static int sh_mobile_release(struct fb_info *info, int user) | |
880 | { | |
881 | struct sh_mobile_lcdc_chan *ch = info->par; | |
882 | ||
883 | mutex_lock(&ch->open_lock); | |
884 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
885 | ||
886 | ch->use_count--; | |
887 | ||
888 | /* Nothing to reconfigure, when called from fbcon */ | |
889 | if (user) { | |
890 | acquire_console_sem(); | |
891 | sh_mobile_fb_reconfig(info); | |
892 | release_console_sem(); | |
893 | } | |
894 | ||
895 | mutex_unlock(&ch->open_lock); | |
896 | ||
897 | return 0; | |
898 | } | |
899 | ||
900 | static int sh_mobile_open(struct fb_info *info, int user) | |
901 | { | |
902 | struct sh_mobile_lcdc_chan *ch = info->par; | |
903 | ||
904 | mutex_lock(&ch->open_lock); | |
905 | ch->use_count++; | |
906 | ||
907 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
908 | mutex_unlock(&ch->open_lock); | |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
913 | static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
914 | { | |
915 | struct sh_mobile_lcdc_chan *ch = info->par; | |
916 | ||
917 | if (var->xres < 160 || var->xres > 1920 || | |
918 | var->yres < 120 || var->yres > 1080 || | |
919 | var->left_margin < 32 || var->left_margin > 320 || | |
920 | var->right_margin < 12 || var->right_margin > 240 || | |
921 | var->upper_margin < 12 || var->upper_margin > 120 || | |
922 | var->lower_margin < 1 || var->lower_margin > 64 || | |
6031f347 | 923 | var->hsync_len < 32 || var->hsync_len > 240 || |
dd210503 GL |
924 | var->vsync_len < 2 || var->vsync_len > 64 || |
925 | var->pixclock < 6000 || var->pixclock > 40000 || | |
926 | var->xres * var->yres * (ch->cfg.bpp / 8) * 2 > info->fix.smem_len) { | |
927 | dev_warn(info->dev, "Invalid info: %u %u %u %u %u %u %u %u %u!\n", | |
928 | var->xres, var->yres, | |
929 | var->left_margin, var->right_margin, | |
930 | var->upper_margin, var->lower_margin, | |
931 | var->hsync_len, var->vsync_len, | |
932 | var->pixclock); | |
933 | return -EINVAL; | |
934 | } | |
935 | return 0; | |
936 | } | |
40331b21 | 937 | |
cfb4f5d1 | 938 | static struct fb_ops sh_mobile_lcdc_ops = { |
9dd38819 | 939 | .owner = THIS_MODULE, |
cfb4f5d1 | 940 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2540c111 MD |
941 | .fb_read = fb_sys_read, |
942 | .fb_write = fb_sys_write, | |
8564557a MD |
943 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
944 | .fb_copyarea = sh_mobile_lcdc_copyarea, | |
945 | .fb_imageblit = sh_mobile_lcdc_imageblit, | |
9dd38819 | 946 | .fb_pan_display = sh_mobile_fb_pan_display, |
40331b21 | 947 | .fb_ioctl = sh_mobile_ioctl, |
dd210503 GL |
948 | .fb_open = sh_mobile_open, |
949 | .fb_release = sh_mobile_release, | |
950 | .fb_check_var = sh_mobile_check_var, | |
cfb4f5d1 MD |
951 | }; |
952 | ||
953 | static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp) | |
954 | { | |
955 | switch (bpp) { | |
956 | case 16: /* PKF[4:0] = 00011 - RGB 565 */ | |
957 | var->red.offset = 11; | |
958 | var->red.length = 5; | |
959 | var->green.offset = 5; | |
960 | var->green.length = 6; | |
961 | var->blue.offset = 0; | |
962 | var->blue.length = 5; | |
963 | var->transp.offset = 0; | |
964 | var->transp.length = 0; | |
965 | break; | |
966 | ||
967 | case 32: /* PKF[4:0] = 00000 - RGB 888 | |
968 | * sh7722 pdf says 00RRGGBB but reality is GGBB00RR | |
969 | * this may be because LDDDSR has word swap enabled.. | |
970 | */ | |
971 | var->red.offset = 0; | |
972 | var->red.length = 8; | |
973 | var->green.offset = 24; | |
974 | var->green.length = 8; | |
975 | var->blue.offset = 16; | |
976 | var->blue.length = 8; | |
977 | var->transp.offset = 0; | |
978 | var->transp.length = 0; | |
979 | break; | |
980 | default: | |
981 | return -EINVAL; | |
982 | } | |
983 | var->bits_per_pixel = bpp; | |
984 | var->red.msb_right = 0; | |
985 | var->green.msb_right = 0; | |
986 | var->blue.msb_right = 0; | |
987 | var->transp.msb_right = 0; | |
988 | return 0; | |
989 | } | |
990 | ||
2feb075a MD |
991 | static int sh_mobile_lcdc_suspend(struct device *dev) |
992 | { | |
993 | struct platform_device *pdev = to_platform_device(dev); | |
994 | ||
995 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); | |
996 | return 0; | |
997 | } | |
998 | ||
999 | static int sh_mobile_lcdc_resume(struct device *dev) | |
1000 | { | |
1001 | struct platform_device *pdev = to_platform_device(dev); | |
1002 | ||
1003 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); | |
1004 | } | |
1005 | ||
0246c471 MD |
1006 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
1007 | { | |
1008 | struct platform_device *pdev = to_platform_device(dev); | |
1009 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
1010 | struct sh_mobile_lcdc_chan *ch; | |
1011 | int k, n; | |
1012 | ||
1013 | /* save per-channel registers */ | |
1014 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
1015 | ch = &p->ch[k]; | |
1016 | if (!ch->enabled) | |
1017 | continue; | |
1018 | for (n = 0; n < NR_CH_REGS; n++) | |
1019 | ch->saved_ch_regs[n] = lcdc_read_chan(ch, n); | |
1020 | } | |
1021 | ||
1022 | /* save shared registers */ | |
1023 | for (n = 0; n < NR_SHARED_REGS; n++) | |
1024 | p->saved_shared_regs[n] = lcdc_read(p, lcdc_shared_regs[n]); | |
1025 | ||
1026 | /* turn off LCDC hardware */ | |
1027 | lcdc_write(p, _LDCNT1R, 0); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) | |
1032 | { | |
1033 | struct platform_device *pdev = to_platform_device(dev); | |
1034 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
1035 | struct sh_mobile_lcdc_chan *ch; | |
1036 | int k, n; | |
1037 | ||
1038 | /* restore per-channel registers */ | |
1039 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
1040 | ch = &p->ch[k]; | |
1041 | if (!ch->enabled) | |
1042 | continue; | |
1043 | for (n = 0; n < NR_CH_REGS; n++) | |
1044 | lcdc_write_chan(ch, n, ch->saved_ch_regs[n]); | |
1045 | } | |
1046 | ||
1047 | /* restore shared registers */ | |
1048 | for (n = 0; n < NR_SHARED_REGS; n++) | |
1049 | lcdc_write(p, lcdc_shared_regs[n], p->saved_shared_regs[n]); | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
47145210 | 1054 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2feb075a MD |
1055 | .suspend = sh_mobile_lcdc_suspend, |
1056 | .resume = sh_mobile_lcdc_resume, | |
0246c471 MD |
1057 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
1058 | .runtime_resume = sh_mobile_lcdc_runtime_resume, | |
2feb075a MD |
1059 | }; |
1060 | ||
6de9edd5 | 1061 | /* locking: called with info->lock held */ |
6011bdea GL |
1062 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
1063 | unsigned long action, void *data) | |
1064 | { | |
1065 | struct fb_event *event = data; | |
1066 | struct fb_info *info = event->info; | |
1067 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1068 | struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; | |
afe417c0 | 1069 | int ret; |
6011bdea GL |
1070 | |
1071 | if (&ch->lcdc->notifier != nb) | |
baf16374 | 1072 | return NOTIFY_DONE; |
6011bdea GL |
1073 | |
1074 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", | |
1075 | __func__, action, event->data); | |
1076 | ||
1077 | switch(action) { | |
1078 | case FB_EVENT_SUSPEND: | |
6de9edd5 | 1079 | if (try_module_get(board_cfg->owner) && board_cfg->display_off) { |
6011bdea | 1080 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
1081 | module_put(board_cfg->owner); |
1082 | } | |
6011bdea | 1083 | pm_runtime_put(info->device); |
afe417c0 | 1084 | sh_mobile_lcdc_stop(ch->lcdc); |
6011bdea GL |
1085 | break; |
1086 | case FB_EVENT_RESUME: | |
dd210503 GL |
1087 | mutex_lock(&ch->open_lock); |
1088 | sh_mobile_fb_reconfig(info); | |
1089 | mutex_unlock(&ch->open_lock); | |
6011bdea GL |
1090 | |
1091 | /* HDMI must be enabled before LCDC configuration */ | |
6de9edd5 | 1092 | if (try_module_get(board_cfg->owner) && board_cfg->display_on) { |
dd210503 | 1093 | board_cfg->display_on(board_cfg->board_data, info); |
6de9edd5 | 1094 | module_put(board_cfg->owner); |
6011bdea GL |
1095 | } |
1096 | ||
afe417c0 GL |
1097 | ret = sh_mobile_lcdc_start(ch->lcdc); |
1098 | if (!ret) | |
1099 | pm_runtime_get_sync(info->device); | |
6011bdea GL |
1100 | } |
1101 | ||
baf16374 | 1102 | return NOTIFY_OK; |
6011bdea GL |
1103 | } |
1104 | ||
cfb4f5d1 MD |
1105 | static int sh_mobile_lcdc_remove(struct platform_device *pdev); |
1106 | ||
c2e13037 | 1107 | static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) |
cfb4f5d1 MD |
1108 | { |
1109 | struct fb_info *info; | |
1110 | struct sh_mobile_lcdc_priv *priv; | |
01ac25b5 | 1111 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
cfb4f5d1 MD |
1112 | struct resource *res; |
1113 | int error; | |
1114 | void *buf; | |
1115 | int i, j; | |
1116 | ||
01ac25b5 | 1117 | if (!pdata) { |
cfb4f5d1 | 1118 | dev_err(&pdev->dev, "no platform data defined\n"); |
8bed9055 | 1119 | return -EINVAL; |
cfb4f5d1 MD |
1120 | } |
1121 | ||
1122 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
8564557a MD |
1123 | i = platform_get_irq(pdev, 0); |
1124 | if (!res || i < 0) { | |
1125 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
8bed9055 | 1126 | return -ENOENT; |
cfb4f5d1 MD |
1127 | } |
1128 | ||
1129 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
1130 | if (!priv) { | |
1131 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
8bed9055 | 1132 | return -ENOMEM; |
cfb4f5d1 MD |
1133 | } |
1134 | ||
8bed9055 GL |
1135 | platform_set_drvdata(pdev, priv); |
1136 | ||
8564557a | 1137 | error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED, |
7ad33e74 | 1138 | dev_name(&pdev->dev), priv); |
8564557a MD |
1139 | if (error) { |
1140 | dev_err(&pdev->dev, "unable to request irq\n"); | |
1141 | goto err1; | |
1142 | } | |
1143 | ||
1144 | priv->irq = i; | |
5ef6b505 | 1145 | atomic_set(&priv->hw_usecnt, -1); |
cfb4f5d1 MD |
1146 | |
1147 | j = 0; | |
1148 | for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) { | |
01ac25b5 | 1149 | struct sh_mobile_lcdc_chan *ch = priv->ch + j; |
cfb4f5d1 | 1150 | |
01ac25b5 GL |
1151 | ch->lcdc = priv; |
1152 | memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i])); | |
cfb4f5d1 | 1153 | |
01ac25b5 | 1154 | error = sh_mobile_lcdc_check_interface(ch); |
cfb4f5d1 MD |
1155 | if (error) { |
1156 | dev_err(&pdev->dev, "unsupported interface type\n"); | |
1157 | goto err1; | |
1158 | } | |
01ac25b5 GL |
1159 | init_waitqueue_head(&ch->frame_end_wait); |
1160 | init_completion(&ch->vsync_completion); | |
1161 | ch->pan_offset = 0; | |
cfb4f5d1 MD |
1162 | |
1163 | switch (pdata->ch[i].chan) { | |
1164 | case LCDC_CHAN_MAINLCD: | |
01ac25b5 GL |
1165 | ch->enabled = 1 << 1; |
1166 | ch->reg_offs = lcdc_offs_mainlcd; | |
cfb4f5d1 MD |
1167 | j++; |
1168 | break; | |
1169 | case LCDC_CHAN_SUBLCD: | |
01ac25b5 GL |
1170 | ch->enabled = 1 << 2; |
1171 | ch->reg_offs = lcdc_offs_sublcd; | |
cfb4f5d1 MD |
1172 | j++; |
1173 | break; | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | if (!j) { | |
1178 | dev_err(&pdev->dev, "no channels defined\n"); | |
1179 | error = -EINVAL; | |
1180 | goto err1; | |
1181 | } | |
1182 | ||
dba6f385 GL |
1183 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
1184 | if (!priv->base) | |
1185 | goto err1; | |
1186 | ||
b51339ff | 1187 | error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); |
cfb4f5d1 MD |
1188 | if (error) { |
1189 | dev_err(&pdev->dev, "unable to setup clocks\n"); | |
1190 | goto err1; | |
1191 | } | |
1192 | ||
cfb4f5d1 | 1193 | for (i = 0; i < j; i++) { |
6011bdea | 1194 | struct fb_var_screeninfo *var; |
71d3b0fc | 1195 | const struct fb_videomode *lcd_cfg, *max_cfg = NULL; |
01ac25b5 | 1196 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
c44f9f76 GL |
1197 | struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg; |
1198 | const struct fb_videomode *mode = cfg->lcd_cfg; | |
71d3b0fc GL |
1199 | unsigned long max_size = 0; |
1200 | int k; | |
5fd284e6 | 1201 | int num_cfg; |
cfb4f5d1 | 1202 | |
01ac25b5 GL |
1203 | ch->info = framebuffer_alloc(0, &pdev->dev); |
1204 | if (!ch->info) { | |
e33afddc PM |
1205 | dev_err(&pdev->dev, "unable to allocate fb_info\n"); |
1206 | error = -ENOMEM; | |
1207 | break; | |
1208 | } | |
1209 | ||
01ac25b5 | 1210 | info = ch->info; |
6011bdea | 1211 | var = &info->var; |
cfb4f5d1 | 1212 | info->fbops = &sh_mobile_lcdc_ops; |
c44f9f76 | 1213 | info->par = ch; |
dd210503 GL |
1214 | |
1215 | mutex_init(&ch->open_lock); | |
1216 | ||
c44f9f76 GL |
1217 | for (k = 0, lcd_cfg = mode; |
1218 | k < cfg->num_cfg && lcd_cfg; | |
71d3b0fc GL |
1219 | k++, lcd_cfg++) { |
1220 | unsigned long size = lcd_cfg->yres * lcd_cfg->xres; | |
1221 | ||
1222 | if (size > max_size) { | |
1223 | max_cfg = lcd_cfg; | |
1224 | max_size = size; | |
1225 | } | |
1226 | } | |
1227 | ||
c44f9f76 GL |
1228 | if (!mode) |
1229 | max_size = DEFAULT_XRES * DEFAULT_YRES; | |
1230 | else if (max_cfg) | |
1231 | dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n", | |
1232 | max_cfg->xres, max_cfg->yres); | |
71d3b0fc | 1233 | |
cfb4f5d1 | 1234 | info->fix = sh_mobile_lcdc_fix; |
71d3b0fc | 1235 | info->fix.smem_len = max_size * (cfg->bpp / 8) * 2; |
cfb4f5d1 | 1236 | |
5fd284e6 | 1237 | if (!mode) { |
c44f9f76 | 1238 | mode = &default_720p; |
5fd284e6 GL |
1239 | num_cfg = 1; |
1240 | } else { | |
1241 | num_cfg = ch->cfg.num_cfg; | |
1242 | } | |
1243 | ||
1244 | fb_videomode_to_modelist(mode, num_cfg, &info->modelist); | |
c44f9f76 GL |
1245 | |
1246 | fb_videomode_to_var(var, mode); | |
9dd38819 | 1247 | /* Default Y virtual resolution is 2x panel size */ |
6011bdea | 1248 | var->yres_virtual = var->yres * 2; |
6011bdea | 1249 | var->activate = FB_ACTIVATE_NOW; |
6011bdea GL |
1250 | |
1251 | error = sh_mobile_lcdc_set_bpp(var, cfg->bpp); | |
cfb4f5d1 MD |
1252 | if (error) |
1253 | break; | |
1254 | ||
cfb4f5d1 | 1255 | buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, |
01ac25b5 | 1256 | &ch->dma_handle, GFP_KERNEL); |
cfb4f5d1 MD |
1257 | if (!buf) { |
1258 | dev_err(&pdev->dev, "unable to allocate buffer\n"); | |
1259 | error = -ENOMEM; | |
1260 | break; | |
1261 | } | |
1262 | ||
01ac25b5 | 1263 | info->pseudo_palette = &ch->pseudo_palette; |
cfb4f5d1 MD |
1264 | info->flags = FBINFO_FLAG_DEFAULT; |
1265 | ||
1266 | error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); | |
1267 | if (error < 0) { | |
1268 | dev_err(&pdev->dev, "unable to allocate cmap\n"); | |
1269 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
01ac25b5 | 1270 | buf, ch->dma_handle); |
cfb4f5d1 MD |
1271 | break; |
1272 | } | |
1273 | ||
01ac25b5 | 1274 | info->fix.smem_start = ch->dma_handle; |
c44f9f76 | 1275 | info->fix.line_length = var->xres * (cfg->bpp / 8); |
cfb4f5d1 MD |
1276 | info->screen_base = buf; |
1277 | info->device = &pdev->dev; | |
1c120deb | 1278 | ch->display_var = *var; |
cfb4f5d1 MD |
1279 | } |
1280 | ||
1281 | if (error) | |
1282 | goto err1; | |
1283 | ||
1284 | error = sh_mobile_lcdc_start(priv); | |
1285 | if (error) { | |
1286 | dev_err(&pdev->dev, "unable to start hardware\n"); | |
1287 | goto err1; | |
1288 | } | |
1289 | ||
1290 | for (i = 0; i < j; i++) { | |
1c6a307a PM |
1291 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
1292 | ||
e33afddc | 1293 | info = ch->info; |
1c6a307a PM |
1294 | |
1295 | if (info->fbdefio) { | |
8bed9055 | 1296 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
1c6a307a | 1297 | info->fix.smem_len >> PAGE_SHIFT); |
8bed9055 | 1298 | if (!ch->sglist) { |
1c6a307a PM |
1299 | dev_err(&pdev->dev, "cannot allocate sglist\n"); |
1300 | goto err1; | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | error = register_framebuffer(info); | |
cfb4f5d1 MD |
1305 | if (error < 0) |
1306 | goto err1; | |
cfb4f5d1 | 1307 | |
cfb4f5d1 MD |
1308 | dev_info(info->dev, |
1309 | "registered %s/%s as %dx%d %dbpp.\n", | |
1310 | pdev->name, | |
1c6a307a | 1311 | (ch->cfg.chan == LCDC_CHAN_MAINLCD) ? |
cfb4f5d1 | 1312 | "mainlcd" : "sublcd", |
c44f9f76 | 1313 | info->var.xres, info->var.yres, |
1c6a307a | 1314 | ch->cfg.bpp); |
8564557a MD |
1315 | |
1316 | /* deferred io mode: disable clock to save power */ | |
6011bdea | 1317 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
8564557a | 1318 | sh_mobile_lcdc_clk_off(priv); |
cfb4f5d1 MD |
1319 | } |
1320 | ||
6011bdea GL |
1321 | /* Failure ignored */ |
1322 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; | |
1323 | fb_register_client(&priv->notifier); | |
1324 | ||
cfb4f5d1 | 1325 | return 0; |
8bed9055 | 1326 | err1: |
cfb4f5d1 | 1327 | sh_mobile_lcdc_remove(pdev); |
8bed9055 | 1328 | |
cfb4f5d1 MD |
1329 | return error; |
1330 | } | |
1331 | ||
1332 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) | |
1333 | { | |
1334 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); | |
1335 | struct fb_info *info; | |
1336 | int i; | |
1337 | ||
6011bdea GL |
1338 | fb_unregister_client(&priv->notifier); |
1339 | ||
cfb4f5d1 | 1340 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) |
8bed9055 | 1341 | if (priv->ch[i].info && priv->ch[i].info->dev) |
e33afddc | 1342 | unregister_framebuffer(priv->ch[i].info); |
cfb4f5d1 MD |
1343 | |
1344 | sh_mobile_lcdc_stop(priv); | |
1345 | ||
1346 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
e33afddc | 1347 | info = priv->ch[i].info; |
cfb4f5d1 | 1348 | |
e33afddc | 1349 | if (!info || !info->device) |
cfb4f5d1 MD |
1350 | continue; |
1351 | ||
1c6a307a PM |
1352 | if (priv->ch[i].sglist) |
1353 | vfree(priv->ch[i].sglist); | |
1354 | ||
1ffbb037 MD |
1355 | if (info->screen_base) |
1356 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
1357 | info->screen_base, | |
1358 | priv->ch[i].dma_handle); | |
cfb4f5d1 | 1359 | fb_dealloc_cmap(&info->cmap); |
e33afddc | 1360 | framebuffer_release(info); |
cfb4f5d1 MD |
1361 | } |
1362 | ||
b51339ff MD |
1363 | if (priv->dot_clk) |
1364 | clk_put(priv->dot_clk); | |
0246c471 | 1365 | |
8bed9055 GL |
1366 | if (priv->dev) |
1367 | pm_runtime_disable(priv->dev); | |
cfb4f5d1 MD |
1368 | |
1369 | if (priv->base) | |
1370 | iounmap(priv->base); | |
1371 | ||
8564557a MD |
1372 | if (priv->irq) |
1373 | free_irq(priv->irq, priv); | |
cfb4f5d1 MD |
1374 | kfree(priv); |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | static struct platform_driver sh_mobile_lcdc_driver = { | |
1379 | .driver = { | |
1380 | .name = "sh_mobile_lcdc_fb", | |
1381 | .owner = THIS_MODULE, | |
2feb075a | 1382 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
cfb4f5d1 MD |
1383 | }, |
1384 | .probe = sh_mobile_lcdc_probe, | |
1385 | .remove = sh_mobile_lcdc_remove, | |
1386 | }; | |
1387 | ||
1388 | static int __init sh_mobile_lcdc_init(void) | |
1389 | { | |
1390 | return platform_driver_register(&sh_mobile_lcdc_driver); | |
1391 | } | |
1392 | ||
1393 | static void __exit sh_mobile_lcdc_exit(void) | |
1394 | { | |
1395 | platform_driver_unregister(&sh_mobile_lcdc_driver); | |
1396 | } | |
1397 | ||
1398 | module_init(sh_mobile_lcdc_init); | |
1399 | module_exit(sh_mobile_lcdc_exit); | |
1400 | ||
1401 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); | |
1402 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); | |
1403 | MODULE_LICENSE("GPL v2"); |