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> | |
15 | #include <linux/fb.h> | |
16 | #include <linux/clk.h> | |
0246c471 | 17 | #include <linux/pm_runtime.h> |
cfb4f5d1 MD |
18 | #include <linux/platform_device.h> |
19 | #include <linux/dma-mapping.h> | |
8564557a | 20 | #include <linux/interrupt.h> |
1c6a307a | 21 | #include <linux/vmalloc.h> |
225c9a8d | 22 | #include <video/sh_mobile_lcdc.h> |
8564557a | 23 | #include <asm/atomic.h> |
cfb4f5d1 MD |
24 | |
25 | #define PALETTE_NR 16 | |
a6f15ade PE |
26 | #define SIDE_B_OFFSET 0x1000 |
27 | #define MIRROR_OFFSET 0x2000 | |
cfb4f5d1 | 28 | |
cfb4f5d1 MD |
29 | /* shared registers */ |
30 | #define _LDDCKR 0x410 | |
31 | #define _LDDCKSTPR 0x414 | |
32 | #define _LDINTR 0x468 | |
33 | #define _LDSR 0x46c | |
34 | #define _LDCNT1R 0x470 | |
35 | #define _LDCNT2R 0x474 | |
9dd38819 | 36 | #define _LDRCNTR 0x478 |
cfb4f5d1 MD |
37 | #define _LDDDSR 0x47c |
38 | #define _LDDWD0R 0x800 | |
39 | #define _LDDRDR 0x840 | |
40 | #define _LDDWAR 0x900 | |
41 | #define _LDDRAR 0x904 | |
42 | ||
0246c471 MD |
43 | /* shared registers and their order for context save/restore */ |
44 | static int lcdc_shared_regs[] = { | |
45 | _LDDCKR, | |
46 | _LDDCKSTPR, | |
47 | _LDINTR, | |
48 | _LDDDSR, | |
49 | _LDCNT1R, | |
50 | _LDCNT2R, | |
51 | }; | |
52 | #define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs) | |
53 | ||
cfb4f5d1 MD |
54 | /* per-channel registers */ |
55 | enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R, | |
0246c471 MD |
56 | LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR, |
57 | NR_CH_REGS }; | |
cfb4f5d1 | 58 | |
0246c471 | 59 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
60 | [LDDCKPAT1R] = 0x400, |
61 | [LDDCKPAT2R] = 0x404, | |
62 | [LDMT1R] = 0x418, | |
63 | [LDMT2R] = 0x41c, | |
64 | [LDMT3R] = 0x420, | |
65 | [LDDFR] = 0x424, | |
66 | [LDSM1R] = 0x428, | |
8564557a | 67 | [LDSM2R] = 0x42c, |
cfb4f5d1 MD |
68 | [LDSA1R] = 0x430, |
69 | [LDMLSR] = 0x438, | |
70 | [LDHCNR] = 0x448, | |
71 | [LDHSYNR] = 0x44c, | |
72 | [LDVLNR] = 0x450, | |
73 | [LDVSYNR] = 0x454, | |
74 | [LDPMR] = 0x460, | |
75 | }; | |
76 | ||
0246c471 | 77 | static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
78 | [LDDCKPAT1R] = 0x408, |
79 | [LDDCKPAT2R] = 0x40c, | |
80 | [LDMT1R] = 0x600, | |
81 | [LDMT2R] = 0x604, | |
82 | [LDMT3R] = 0x608, | |
83 | [LDDFR] = 0x60c, | |
84 | [LDSM1R] = 0x610, | |
8564557a | 85 | [LDSM2R] = 0x614, |
cfb4f5d1 MD |
86 | [LDSA1R] = 0x618, |
87 | [LDMLSR] = 0x620, | |
88 | [LDHCNR] = 0x624, | |
89 | [LDHSYNR] = 0x628, | |
90 | [LDVLNR] = 0x62c, | |
91 | [LDVSYNR] = 0x630, | |
92 | [LDPMR] = 0x63c, | |
93 | }; | |
94 | ||
95 | #define START_LCDC 0x00000001 | |
96 | #define LCDC_RESET 0x00000100 | |
97 | #define DISPLAY_BEU 0x00000008 | |
98 | #define LCDC_ENABLE 0x00000001 | |
8564557a | 99 | #define LDINTR_FE 0x00000400 |
9dd38819 PE |
100 | #define LDINTR_VSE 0x00000200 |
101 | #define LDINTR_VEE 0x00000100 | |
8564557a | 102 | #define LDINTR_FS 0x00000004 |
9dd38819 PE |
103 | #define LDINTR_VSS 0x00000002 |
104 | #define LDINTR_VES 0x00000001 | |
a6f15ade PE |
105 | #define LDRCNTR_SRS 0x00020000 |
106 | #define LDRCNTR_SRC 0x00010000 | |
107 | #define LDRCNTR_MRS 0x00000002 | |
108 | #define LDRCNTR_MRC 0x00000001 | |
cfb4f5d1 | 109 | |
0246c471 MD |
110 | struct sh_mobile_lcdc_priv; |
111 | struct sh_mobile_lcdc_chan { | |
112 | struct sh_mobile_lcdc_priv *lcdc; | |
113 | unsigned long *reg_offs; | |
114 | unsigned long ldmt1r_value; | |
115 | unsigned long enabled; /* ME and SE in LDCNT2R */ | |
116 | struct sh_mobile_lcdc_chan_cfg cfg; | |
117 | u32 pseudo_palette[PALETTE_NR]; | |
118 | unsigned long saved_ch_regs[NR_CH_REGS]; | |
119 | struct fb_info *info; | |
120 | dma_addr_t dma_handle; | |
121 | struct fb_deferred_io defio; | |
122 | struct scatterlist *sglist; | |
123 | unsigned long frame_end; | |
9dd38819 PE |
124 | unsigned long pan_offset; |
125 | unsigned long new_pan_offset; | |
0246c471 MD |
126 | wait_queue_head_t frame_end_wait; |
127 | }; | |
128 | ||
129 | struct sh_mobile_lcdc_priv { | |
130 | void __iomem *base; | |
131 | int irq; | |
132 | atomic_t hw_usecnt; | |
133 | struct device *dev; | |
134 | struct clk *dot_clk; | |
135 | unsigned long lddckr; | |
136 | struct sh_mobile_lcdc_chan ch[2]; | |
137 | unsigned long saved_shared_regs[NR_SHARED_REGS]; | |
138 | int started; | |
139 | }; | |
140 | ||
a6f15ade PE |
141 | static bool banked(int reg_nr) |
142 | { | |
143 | switch (reg_nr) { | |
144 | case LDMT1R: | |
145 | case LDMT2R: | |
146 | case LDMT3R: | |
147 | case LDDFR: | |
148 | case LDSM1R: | |
149 | case LDSA1R: | |
150 | case LDMLSR: | |
151 | case LDHCNR: | |
152 | case LDHSYNR: | |
153 | case LDVLNR: | |
154 | case LDVSYNR: | |
155 | return true; | |
156 | } | |
157 | return false; | |
158 | } | |
159 | ||
cfb4f5d1 MD |
160 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
161 | int reg_nr, unsigned long data) | |
162 | { | |
163 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); | |
a6f15ade PE |
164 | if (banked(reg_nr)) |
165 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
166 | SIDE_B_OFFSET); | |
167 | } | |
168 | ||
169 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, | |
170 | int reg_nr, unsigned long data) | |
171 | { | |
172 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
173 | MIRROR_OFFSET); | |
cfb4f5d1 MD |
174 | } |
175 | ||
176 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, | |
177 | int reg_nr) | |
178 | { | |
179 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); | |
180 | } | |
181 | ||
182 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, | |
183 | unsigned long reg_offs, unsigned long data) | |
184 | { | |
185 | iowrite32(data, priv->base + reg_offs); | |
186 | } | |
187 | ||
188 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, | |
189 | unsigned long reg_offs) | |
190 | { | |
191 | return ioread32(priv->base + reg_offs); | |
192 | } | |
193 | ||
194 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, | |
195 | unsigned long reg_offs, | |
196 | unsigned long mask, unsigned long until) | |
197 | { | |
198 | while ((lcdc_read(priv, reg_offs) & mask) != until) | |
199 | cpu_relax(); | |
200 | } | |
201 | ||
202 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) | |
203 | { | |
204 | return chan->cfg.chan == LCDC_CHAN_SUBLCD; | |
205 | } | |
206 | ||
207 | static void lcdc_sys_write_index(void *handle, unsigned long data) | |
208 | { | |
209 | struct sh_mobile_lcdc_chan *ch = handle; | |
210 | ||
211 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x10000000); | |
212 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
213 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 214 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
215 | } |
216 | ||
217 | static void lcdc_sys_write_data(void *handle, unsigned long data) | |
218 | { | |
219 | struct sh_mobile_lcdc_chan *ch = handle; | |
220 | ||
221 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x11000000); | |
222 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
223 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 224 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
225 | } |
226 | ||
227 | static unsigned long lcdc_sys_read_data(void *handle) | |
228 | { | |
229 | struct sh_mobile_lcdc_chan *ch = handle; | |
230 | ||
231 | lcdc_write(ch->lcdc, _LDDRDR, 0x01000000); | |
232 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
233 | lcdc_write(ch->lcdc, _LDDRAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
234 | udelay(1); | |
909f10de | 235 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 | 236 | |
ec56b66f | 237 | return lcdc_read(ch->lcdc, _LDDRDR) & 0x3ffff; |
cfb4f5d1 MD |
238 | } |
239 | ||
240 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { | |
241 | lcdc_sys_write_index, | |
242 | lcdc_sys_write_data, | |
243 | lcdc_sys_read_data, | |
244 | }; | |
245 | ||
8564557a MD |
246 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
247 | { | |
0246c471 MD |
248 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
249 | pm_runtime_get_sync(priv->dev); | |
8564557a MD |
250 | if (priv->dot_clk) |
251 | clk_enable(priv->dot_clk); | |
252 | } | |
253 | } | |
254 | ||
255 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) | |
256 | { | |
0246c471 | 257 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
8564557a MD |
258 | if (priv->dot_clk) |
259 | clk_disable(priv->dot_clk); | |
0246c471 | 260 | pm_runtime_put(priv->dev); |
8564557a MD |
261 | } |
262 | } | |
8564557a | 263 | |
1c6a307a PM |
264 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
265 | struct list_head *pagelist) | |
266 | { | |
267 | struct sh_mobile_lcdc_chan *ch = info->par; | |
268 | unsigned int nr_pages_max = info->fix.smem_len >> PAGE_SHIFT; | |
269 | struct page *page; | |
270 | int nr_pages = 0; | |
271 | ||
272 | sg_init_table(ch->sglist, nr_pages_max); | |
273 | ||
274 | list_for_each_entry(page, pagelist, lru) | |
275 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); | |
276 | ||
277 | return nr_pages; | |
278 | } | |
279 | ||
8564557a MD |
280 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
281 | struct list_head *pagelist) | |
282 | { | |
283 | struct sh_mobile_lcdc_chan *ch = info->par; | |
ef61aae4 | 284 | struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg; |
8564557a MD |
285 | |
286 | /* enable clocks before accessing hardware */ | |
287 | sh_mobile_lcdc_clk_on(ch->lcdc); | |
288 | ||
5c1a56b5 PM |
289 | /* |
290 | * It's possible to get here without anything on the pagelist via | |
291 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() | |
292 | * invocation. In the former case, the acceleration routines are | |
293 | * stepped in to when using the framebuffer console causing the | |
294 | * workqueue to be scheduled without any dirty pages on the list. | |
295 | * | |
296 | * Despite this, a panel update is still needed given that the | |
297 | * acceleration routines have their own methods for writing in | |
298 | * that still need to be updated. | |
299 | * | |
300 | * The fsync() and empty pagelist case could be optimized for, | |
301 | * but we don't bother, as any application exhibiting such | |
302 | * behaviour is fundamentally broken anyways. | |
303 | */ | |
304 | if (!list_empty(pagelist)) { | |
305 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); | |
306 | ||
307 | /* trigger panel update */ | |
308 | dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
309 | if (bcfg->start_transfer) |
310 | bcfg->start_transfer(bcfg->board_data, ch, | |
311 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 PM |
312 | lcdc_write_chan(ch, LDSM2R, 1); |
313 | dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
314 | } else { |
315 | if (bcfg->start_transfer) | |
316 | bcfg->start_transfer(bcfg->board_data, ch, | |
317 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 | 318 | lcdc_write_chan(ch, LDSM2R, 1); |
ef61aae4 | 319 | } |
8564557a MD |
320 | } |
321 | ||
322 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) | |
323 | { | |
324 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
325 | ||
326 | if (fbdefio) | |
327 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); | |
328 | } | |
329 | ||
330 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) | |
331 | { | |
332 | struct sh_mobile_lcdc_priv *priv = data; | |
2feb075a | 333 | struct sh_mobile_lcdc_chan *ch; |
8564557a | 334 | unsigned long tmp; |
9dd38819 | 335 | unsigned long ldintr; |
2feb075a MD |
336 | int is_sub; |
337 | int k; | |
8564557a MD |
338 | |
339 | /* acknowledge interrupt */ | |
9dd38819 PE |
340 | ldintr = tmp = lcdc_read(priv, _LDINTR); |
341 | /* | |
342 | * disable further VSYNC End IRQs, preserve all other enabled IRQs, | |
343 | * write 0 to bits 0-6 to ack all triggered IRQs. | |
344 | */ | |
345 | tmp &= 0xffffff00 & ~LDINTR_VEE; | |
8564557a MD |
346 | lcdc_write(priv, _LDINTR, tmp); |
347 | ||
2feb075a MD |
348 | /* figure out if this interrupt is for main or sub lcd */ |
349 | is_sub = (lcdc_read(priv, _LDSR) & (1 << 10)) ? 1 : 0; | |
350 | ||
9dd38819 | 351 | /* wake up channel and disable clocks */ |
2feb075a MD |
352 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
353 | ch = &priv->ch[k]; | |
354 | ||
355 | if (!ch->enabled) | |
356 | continue; | |
357 | ||
9dd38819 PE |
358 | /* Frame Start */ |
359 | if (ldintr & LDINTR_FS) { | |
360 | if (is_sub == lcdc_chan_is_sublcd(ch)) { | |
361 | ch->frame_end = 1; | |
362 | wake_up(&ch->frame_end_wait); | |
2feb075a | 363 | |
9dd38819 PE |
364 | sh_mobile_lcdc_clk_off(priv); |
365 | } | |
366 | } | |
367 | ||
368 | /* VSYNC End */ | |
369 | if (ldintr & LDINTR_VES) { | |
a6f15ade | 370 | unsigned long ldrcntr = lcdc_read(priv, _LDRCNTR); |
9dd38819 | 371 | /* Set the source address for the next refresh */ |
a6f15ade PE |
372 | lcdc_write_chan_mirror(ch, LDSA1R, ch->dma_handle + |
373 | ch->new_pan_offset); | |
374 | if (lcdc_chan_is_sublcd(ch)) | |
375 | lcdc_write(ch->lcdc, _LDRCNTR, | |
376 | ldrcntr ^ LDRCNTR_SRS); | |
377 | else | |
378 | lcdc_write(ch->lcdc, _LDRCNTR, | |
379 | ldrcntr ^ LDRCNTR_MRS); | |
9dd38819 | 380 | ch->pan_offset = ch->new_pan_offset; |
2feb075a MD |
381 | } |
382 | } | |
383 | ||
8564557a MD |
384 | return IRQ_HANDLED; |
385 | } | |
386 | ||
cfb4f5d1 MD |
387 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
388 | int start) | |
389 | { | |
390 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); | |
391 | int k; | |
392 | ||
393 | /* start or stop the lcdc */ | |
394 | if (start) | |
395 | lcdc_write(priv, _LDCNT2R, tmp | START_LCDC); | |
396 | else | |
397 | lcdc_write(priv, _LDCNT2R, tmp & ~START_LCDC); | |
398 | ||
399 | /* wait until power is applied/stopped on all channels */ | |
400 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
401 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) | |
402 | while (1) { | |
403 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) & 3; | |
404 | if (start && tmp == 3) | |
405 | break; | |
406 | if (!start && tmp == 0) | |
407 | break; | |
408 | cpu_relax(); | |
409 | } | |
410 | ||
411 | if (!start) | |
412 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ | |
413 | } | |
414 | ||
415 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) | |
416 | { | |
417 | struct sh_mobile_lcdc_chan *ch; | |
418 | struct fb_videomode *lcd_cfg; | |
419 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
420 | unsigned long tmp; | |
421 | int k, m; | |
422 | int ret = 0; | |
423 | ||
8564557a MD |
424 | /* enable clocks before accessing the hardware */ |
425 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
426 | if (priv->ch[k].enabled) | |
427 | sh_mobile_lcdc_clk_on(priv); | |
428 | ||
cfb4f5d1 MD |
429 | /* reset */ |
430 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LCDC_RESET); | |
431 | lcdc_wait_bit(priv, _LDCNT2R, LCDC_RESET, 0); | |
432 | ||
433 | /* enable LCDC channels */ | |
434 | tmp = lcdc_read(priv, _LDCNT2R); | |
435 | tmp |= priv->ch[0].enabled; | |
436 | tmp |= priv->ch[1].enabled; | |
437 | lcdc_write(priv, _LDCNT2R, tmp); | |
438 | ||
439 | /* read data from external memory, avoid using the BEU for now */ | |
440 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) & ~DISPLAY_BEU); | |
441 | ||
442 | /* stop the lcdc first */ | |
443 | sh_mobile_lcdc_start_stop(priv, 0); | |
444 | ||
445 | /* configure clocks */ | |
446 | tmp = priv->lddckr; | |
447 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
448 | ch = &priv->ch[k]; | |
449 | ||
450 | if (!priv->ch[k].enabled) | |
451 | continue; | |
452 | ||
453 | m = ch->cfg.clock_divider; | |
454 | if (!m) | |
455 | continue; | |
456 | ||
457 | if (m == 1) | |
458 | m = 1 << 6; | |
459 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); | |
460 | ||
461 | lcdc_write_chan(ch, LDDCKPAT1R, 0x00000000); | |
462 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); | |
463 | } | |
464 | ||
465 | lcdc_write(priv, _LDDCKR, tmp); | |
466 | ||
467 | /* start dotclock again */ | |
468 | lcdc_write(priv, _LDDCKSTPR, 0); | |
469 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); | |
470 | ||
8564557a | 471 | /* interrupts are disabled to begin with */ |
cfb4f5d1 MD |
472 | lcdc_write(priv, _LDINTR, 0); |
473 | ||
474 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
475 | ch = &priv->ch[k]; | |
476 | lcd_cfg = &ch->cfg.lcd_cfg; | |
477 | ||
478 | if (!ch->enabled) | |
479 | continue; | |
480 | ||
481 | tmp = ch->ldmt1r_value; | |
482 | tmp |= (lcd_cfg->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; | |
483 | tmp |= (lcd_cfg->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; | |
f400f510 MD |
484 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; |
485 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; | |
486 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; | |
487 | tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; | |
488 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0; | |
cfb4f5d1 MD |
489 | lcdc_write_chan(ch, LDMT1R, tmp); |
490 | ||
491 | /* setup SYS bus */ | |
492 | lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); | |
493 | lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); | |
494 | ||
495 | /* horizontal configuration */ | |
496 | tmp = lcd_cfg->xres + lcd_cfg->hsync_len; | |
497 | tmp += lcd_cfg->left_margin; | |
498 | tmp += lcd_cfg->right_margin; | |
499 | tmp /= 8; /* HTCN */ | |
500 | tmp |= (lcd_cfg->xres / 8) << 16; /* HDCN */ | |
501 | lcdc_write_chan(ch, LDHCNR, tmp); | |
502 | ||
503 | tmp = lcd_cfg->xres; | |
504 | tmp += lcd_cfg->right_margin; | |
505 | tmp /= 8; /* HSYNP */ | |
506 | tmp |= (lcd_cfg->hsync_len / 8) << 16; /* HSYNW */ | |
507 | lcdc_write_chan(ch, LDHSYNR, tmp); | |
508 | ||
509 | /* power supply */ | |
510 | lcdc_write_chan(ch, LDPMR, 0); | |
511 | ||
512 | /* vertical configuration */ | |
513 | tmp = lcd_cfg->yres + lcd_cfg->vsync_len; | |
514 | tmp += lcd_cfg->upper_margin; | |
515 | tmp += lcd_cfg->lower_margin; /* VTLN */ | |
516 | tmp |= lcd_cfg->yres << 16; /* VDLN */ | |
517 | lcdc_write_chan(ch, LDVLNR, tmp); | |
518 | ||
519 | tmp = lcd_cfg->yres; | |
520 | tmp += lcd_cfg->lower_margin; /* VSYNP */ | |
521 | tmp |= lcd_cfg->vsync_len << 16; /* VSYNW */ | |
522 | lcdc_write_chan(ch, LDVSYNR, tmp); | |
523 | ||
524 | board_cfg = &ch->cfg.board_cfg; | |
525 | if (board_cfg->setup_sys) | |
526 | ret = board_cfg->setup_sys(board_cfg->board_data, ch, | |
527 | &sh_mobile_lcdc_sys_bus_ops); | |
528 | if (ret) | |
529 | return ret; | |
530 | } | |
531 | ||
cfb4f5d1 MD |
532 | /* word and long word swap */ |
533 | lcdc_write(priv, _LDDDSR, lcdc_read(priv, _LDDDSR) | 6); | |
534 | ||
535 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
536 | ch = &priv->ch[k]; | |
537 | ||
538 | if (!priv->ch[k].enabled) | |
539 | continue; | |
540 | ||
541 | /* set bpp format in PKF[4:0] */ | |
542 | tmp = lcdc_read_chan(ch, LDDFR); | |
543 | tmp &= ~(0x0001001f); | |
e33afddc | 544 | tmp |= (ch->info->var.bits_per_pixel == 16) ? 3 : 0; |
cfb4f5d1 MD |
545 | lcdc_write_chan(ch, LDDFR, tmp); |
546 | ||
547 | /* point out our frame buffer */ | |
e33afddc | 548 | lcdc_write_chan(ch, LDSA1R, ch->info->fix.smem_start); |
cfb4f5d1 MD |
549 | |
550 | /* set line size */ | |
e33afddc | 551 | lcdc_write_chan(ch, LDMLSR, ch->info->fix.line_length); |
cfb4f5d1 | 552 | |
8564557a MD |
553 | /* setup deferred io if SYS bus */ |
554 | tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; | |
555 | if (ch->ldmt1r_value & (1 << 12) && tmp) { | |
556 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; | |
557 | ch->defio.delay = msecs_to_jiffies(tmp); | |
e33afddc PM |
558 | ch->info->fbdefio = &ch->defio; |
559 | fb_deferred_io_init(ch->info); | |
8564557a MD |
560 | |
561 | /* one-shot mode */ | |
562 | lcdc_write_chan(ch, LDSM1R, 1); | |
563 | ||
564 | /* enable "Frame End Interrupt Enable" bit */ | |
565 | lcdc_write(priv, _LDINTR, LDINTR_FE); | |
566 | ||
567 | } else { | |
568 | /* continuous read mode */ | |
569 | lcdc_write_chan(ch, LDSM1R, 0); | |
570 | } | |
cfb4f5d1 MD |
571 | } |
572 | ||
573 | /* display output */ | |
574 | lcdc_write(priv, _LDCNT1R, LCDC_ENABLE); | |
575 | ||
576 | /* start the lcdc */ | |
577 | sh_mobile_lcdc_start_stop(priv, 1); | |
8e9bb19e | 578 | priv->started = 1; |
cfb4f5d1 MD |
579 | |
580 | /* tell the board code to enable the panel */ | |
581 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
582 | ch = &priv->ch[k]; | |
21bc1f02 MD |
583 | if (!ch->enabled) |
584 | continue; | |
585 | ||
cfb4f5d1 MD |
586 | board_cfg = &ch->cfg.board_cfg; |
587 | if (board_cfg->display_on) | |
588 | board_cfg->display_on(board_cfg->board_data); | |
589 | } | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) | |
595 | { | |
596 | struct sh_mobile_lcdc_chan *ch; | |
597 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
598 | int k; | |
599 | ||
2feb075a | 600 | /* clean up deferred io and ask board code to disable panel */ |
cfb4f5d1 MD |
601 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
602 | ch = &priv->ch[k]; | |
21bc1f02 MD |
603 | if (!ch->enabled) |
604 | continue; | |
8564557a | 605 | |
2feb075a MD |
606 | /* deferred io mode: |
607 | * flush frame, and wait for frame end interrupt | |
608 | * clean up deferred io and enable clock | |
609 | */ | |
e33afddc | 610 | if (ch->info->fbdefio) { |
2feb075a | 611 | ch->frame_end = 0; |
e33afddc | 612 | schedule_delayed_work(&ch->info->deferred_work, 0); |
2feb075a | 613 | wait_event(ch->frame_end_wait, ch->frame_end); |
e33afddc PM |
614 | fb_deferred_io_cleanup(ch->info); |
615 | ch->info->fbdefio = NULL; | |
2feb075a | 616 | sh_mobile_lcdc_clk_on(priv); |
8564557a | 617 | } |
2feb075a MD |
618 | |
619 | board_cfg = &ch->cfg.board_cfg; | |
620 | if (board_cfg->display_off) | |
621 | board_cfg->display_off(board_cfg->board_data); | |
cfb4f5d1 MD |
622 | } |
623 | ||
624 | /* stop the lcdc */ | |
8e9bb19e MD |
625 | if (priv->started) { |
626 | sh_mobile_lcdc_start_stop(priv, 0); | |
627 | priv->started = 0; | |
628 | } | |
b51339ff | 629 | |
8564557a MD |
630 | /* stop clocks */ |
631 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
632 | if (priv->ch[k].enabled) | |
633 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
634 | } |
635 | ||
636 | static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) | |
637 | { | |
638 | int ifm, miftyp; | |
639 | ||
640 | switch (ch->cfg.interface_type) { | |
641 | case RGB8: ifm = 0; miftyp = 0; break; | |
642 | case RGB9: ifm = 0; miftyp = 4; break; | |
643 | case RGB12A: ifm = 0; miftyp = 5; break; | |
644 | case RGB12B: ifm = 0; miftyp = 6; break; | |
645 | case RGB16: ifm = 0; miftyp = 7; break; | |
646 | case RGB18: ifm = 0; miftyp = 10; break; | |
647 | case RGB24: ifm = 0; miftyp = 11; break; | |
648 | case SYS8A: ifm = 1; miftyp = 0; break; | |
649 | case SYS8B: ifm = 1; miftyp = 1; break; | |
650 | case SYS8C: ifm = 1; miftyp = 2; break; | |
651 | case SYS8D: ifm = 1; miftyp = 3; break; | |
652 | case SYS9: ifm = 1; miftyp = 4; break; | |
653 | case SYS12: ifm = 1; miftyp = 5; break; | |
654 | case SYS16A: ifm = 1; miftyp = 7; break; | |
655 | case SYS16B: ifm = 1; miftyp = 8; break; | |
656 | case SYS16C: ifm = 1; miftyp = 9; break; | |
657 | case SYS18: ifm = 1; miftyp = 10; break; | |
658 | case SYS24: ifm = 1; miftyp = 11; break; | |
659 | default: goto bad; | |
660 | } | |
661 | ||
662 | /* SUBLCD only supports SYS interface */ | |
663 | if (lcdc_chan_is_sublcd(ch)) { | |
664 | if (ifm == 0) | |
665 | goto bad; | |
666 | else | |
667 | ifm = 0; | |
668 | } | |
669 | ||
670 | ch->ldmt1r_value = (ifm << 12) | miftyp; | |
671 | return 0; | |
672 | bad: | |
673 | return -EINVAL; | |
674 | } | |
675 | ||
b51339ff MD |
676 | static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, |
677 | int clock_source, | |
cfb4f5d1 MD |
678 | struct sh_mobile_lcdc_priv *priv) |
679 | { | |
680 | char *str; | |
681 | int icksel; | |
682 | ||
683 | switch (clock_source) { | |
684 | case LCDC_CLK_BUS: str = "bus_clk"; icksel = 0; break; | |
685 | case LCDC_CLK_PERIPHERAL: str = "peripheral_clk"; icksel = 1; break; | |
686 | case LCDC_CLK_EXTERNAL: str = NULL; icksel = 2; break; | |
687 | default: | |
688 | return -EINVAL; | |
689 | } | |
690 | ||
691 | priv->lddckr = icksel << 16; | |
692 | ||
693 | if (str) { | |
b51339ff MD |
694 | priv->dot_clk = clk_get(&pdev->dev, str); |
695 | if (IS_ERR(priv->dot_clk)) { | |
696 | dev_err(&pdev->dev, "cannot get dot clock %s\n", str); | |
b51339ff | 697 | return PTR_ERR(priv->dot_clk); |
cfb4f5d1 | 698 | } |
cfb4f5d1 | 699 | } |
0246c471 MD |
700 | atomic_set(&priv->hw_usecnt, -1); |
701 | ||
702 | /* Runtime PM support involves two step for this driver: | |
703 | * 1) Enable Runtime PM | |
704 | * 2) Force Runtime PM Resume since hardware is accessed from probe() | |
705 | */ | |
706 | pm_runtime_enable(priv->dev); | |
707 | pm_runtime_resume(priv->dev); | |
cfb4f5d1 MD |
708 | return 0; |
709 | } | |
710 | ||
711 | static int sh_mobile_lcdc_setcolreg(u_int regno, | |
712 | u_int red, u_int green, u_int blue, | |
713 | u_int transp, struct fb_info *info) | |
714 | { | |
715 | u32 *palette = info->pseudo_palette; | |
716 | ||
717 | if (regno >= PALETTE_NR) | |
718 | return -EINVAL; | |
719 | ||
720 | /* only FB_VISUAL_TRUECOLOR supported */ | |
721 | ||
722 | red >>= 16 - info->var.red.length; | |
723 | green >>= 16 - info->var.green.length; | |
724 | blue >>= 16 - info->var.blue.length; | |
725 | transp >>= 16 - info->var.transp.length; | |
726 | ||
727 | palette[regno] = (red << info->var.red.offset) | | |
728 | (green << info->var.green.offset) | | |
729 | (blue << info->var.blue.offset) | | |
730 | (transp << info->var.transp.offset); | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { | |
736 | .id = "SH Mobile LCDC", | |
737 | .type = FB_TYPE_PACKED_PIXELS, | |
738 | .visual = FB_VISUAL_TRUECOLOR, | |
739 | .accel = FB_ACCEL_NONE, | |
9dd38819 PE |
740 | .xpanstep = 0, |
741 | .ypanstep = 1, | |
742 | .ywrapstep = 0, | |
cfb4f5d1 MD |
743 | }; |
744 | ||
8564557a MD |
745 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
746 | const struct fb_fillrect *rect) | |
747 | { | |
748 | sys_fillrect(info, rect); | |
749 | sh_mobile_lcdc_deferred_io_touch(info); | |
750 | } | |
751 | ||
752 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, | |
753 | const struct fb_copyarea *area) | |
754 | { | |
755 | sys_copyarea(info, area); | |
756 | sh_mobile_lcdc_deferred_io_touch(info); | |
757 | } | |
758 | ||
759 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, | |
760 | const struct fb_image *image) | |
761 | { | |
762 | sys_imageblit(info, image); | |
763 | sh_mobile_lcdc_deferred_io_touch(info); | |
764 | } | |
765 | ||
9dd38819 PE |
766 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
767 | struct fb_info *info) | |
768 | { | |
769 | struct sh_mobile_lcdc_chan *ch = info->par; | |
770 | ||
771 | if (info->var.xoffset == var->xoffset && | |
772 | info->var.yoffset == var->yoffset) | |
773 | return 0; /* No change, do nothing */ | |
774 | ||
775 | ch->new_pan_offset = (var->yoffset * info->fix.line_length) + | |
776 | (var->xoffset * (info->var.bits_per_pixel / 8)); | |
777 | ||
778 | if (ch->new_pan_offset != ch->pan_offset) { | |
779 | unsigned long ldintr; | |
780 | ldintr = lcdc_read(ch->lcdc, _LDINTR); | |
781 | ldintr |= LDINTR_VEE; | |
782 | lcdc_write(ch->lcdc, _LDINTR, ldintr); | |
783 | sh_mobile_lcdc_deferred_io_touch(info); | |
784 | } | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
cfb4f5d1 | 789 | static struct fb_ops sh_mobile_lcdc_ops = { |
9dd38819 | 790 | .owner = THIS_MODULE, |
cfb4f5d1 | 791 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2540c111 MD |
792 | .fb_read = fb_sys_read, |
793 | .fb_write = fb_sys_write, | |
8564557a MD |
794 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
795 | .fb_copyarea = sh_mobile_lcdc_copyarea, | |
796 | .fb_imageblit = sh_mobile_lcdc_imageblit, | |
9dd38819 | 797 | .fb_pan_display = sh_mobile_fb_pan_display, |
cfb4f5d1 MD |
798 | }; |
799 | ||
800 | static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp) | |
801 | { | |
802 | switch (bpp) { | |
803 | case 16: /* PKF[4:0] = 00011 - RGB 565 */ | |
804 | var->red.offset = 11; | |
805 | var->red.length = 5; | |
806 | var->green.offset = 5; | |
807 | var->green.length = 6; | |
808 | var->blue.offset = 0; | |
809 | var->blue.length = 5; | |
810 | var->transp.offset = 0; | |
811 | var->transp.length = 0; | |
812 | break; | |
813 | ||
814 | case 32: /* PKF[4:0] = 00000 - RGB 888 | |
815 | * sh7722 pdf says 00RRGGBB but reality is GGBB00RR | |
816 | * this may be because LDDDSR has word swap enabled.. | |
817 | */ | |
818 | var->red.offset = 0; | |
819 | var->red.length = 8; | |
820 | var->green.offset = 24; | |
821 | var->green.length = 8; | |
822 | var->blue.offset = 16; | |
823 | var->blue.length = 8; | |
824 | var->transp.offset = 0; | |
825 | var->transp.length = 0; | |
826 | break; | |
827 | default: | |
828 | return -EINVAL; | |
829 | } | |
830 | var->bits_per_pixel = bpp; | |
831 | var->red.msb_right = 0; | |
832 | var->green.msb_right = 0; | |
833 | var->blue.msb_right = 0; | |
834 | var->transp.msb_right = 0; | |
835 | return 0; | |
836 | } | |
837 | ||
2feb075a MD |
838 | static int sh_mobile_lcdc_suspend(struct device *dev) |
839 | { | |
840 | struct platform_device *pdev = to_platform_device(dev); | |
841 | ||
842 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); | |
843 | return 0; | |
844 | } | |
845 | ||
846 | static int sh_mobile_lcdc_resume(struct device *dev) | |
847 | { | |
848 | struct platform_device *pdev = to_platform_device(dev); | |
849 | ||
850 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); | |
851 | } | |
852 | ||
0246c471 MD |
853 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
854 | { | |
855 | struct platform_device *pdev = to_platform_device(dev); | |
856 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
857 | struct sh_mobile_lcdc_chan *ch; | |
858 | int k, n; | |
859 | ||
860 | /* save per-channel registers */ | |
861 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
862 | ch = &p->ch[k]; | |
863 | if (!ch->enabled) | |
864 | continue; | |
865 | for (n = 0; n < NR_CH_REGS; n++) | |
866 | ch->saved_ch_regs[n] = lcdc_read_chan(ch, n); | |
867 | } | |
868 | ||
869 | /* save shared registers */ | |
870 | for (n = 0; n < NR_SHARED_REGS; n++) | |
871 | p->saved_shared_regs[n] = lcdc_read(p, lcdc_shared_regs[n]); | |
872 | ||
873 | /* turn off LCDC hardware */ | |
874 | lcdc_write(p, _LDCNT1R, 0); | |
875 | return 0; | |
876 | } | |
877 | ||
878 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) | |
879 | { | |
880 | struct platform_device *pdev = to_platform_device(dev); | |
881 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
882 | struct sh_mobile_lcdc_chan *ch; | |
883 | int k, n; | |
884 | ||
885 | /* restore per-channel registers */ | |
886 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
887 | ch = &p->ch[k]; | |
888 | if (!ch->enabled) | |
889 | continue; | |
890 | for (n = 0; n < NR_CH_REGS; n++) | |
891 | lcdc_write_chan(ch, n, ch->saved_ch_regs[n]); | |
892 | } | |
893 | ||
894 | /* restore shared registers */ | |
895 | for (n = 0; n < NR_SHARED_REGS; n++) | |
896 | lcdc_write(p, lcdc_shared_regs[n], p->saved_shared_regs[n]); | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
47145210 | 901 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2feb075a MD |
902 | .suspend = sh_mobile_lcdc_suspend, |
903 | .resume = sh_mobile_lcdc_resume, | |
0246c471 MD |
904 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
905 | .runtime_resume = sh_mobile_lcdc_runtime_resume, | |
2feb075a MD |
906 | }; |
907 | ||
cfb4f5d1 MD |
908 | static int sh_mobile_lcdc_remove(struct platform_device *pdev); |
909 | ||
910 | static int __init sh_mobile_lcdc_probe(struct platform_device *pdev) | |
911 | { | |
912 | struct fb_info *info; | |
913 | struct sh_mobile_lcdc_priv *priv; | |
914 | struct sh_mobile_lcdc_info *pdata; | |
915 | struct sh_mobile_lcdc_chan_cfg *cfg; | |
916 | struct resource *res; | |
917 | int error; | |
918 | void *buf; | |
919 | int i, j; | |
920 | ||
921 | if (!pdev->dev.platform_data) { | |
922 | dev_err(&pdev->dev, "no platform data defined\n"); | |
923 | error = -EINVAL; | |
924 | goto err0; | |
925 | } | |
926 | ||
927 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
8564557a MD |
928 | i = platform_get_irq(pdev, 0); |
929 | if (!res || i < 0) { | |
930 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
cfb4f5d1 MD |
931 | error = -ENOENT; |
932 | goto err0; | |
933 | } | |
934 | ||
935 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
936 | if (!priv) { | |
937 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
938 | error = -ENOMEM; | |
939 | goto err0; | |
940 | } | |
941 | ||
8564557a | 942 | error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED, |
7ad33e74 | 943 | dev_name(&pdev->dev), priv); |
8564557a MD |
944 | if (error) { |
945 | dev_err(&pdev->dev, "unable to request irq\n"); | |
946 | goto err1; | |
947 | } | |
948 | ||
949 | priv->irq = i; | |
0246c471 | 950 | priv->dev = &pdev->dev; |
cfb4f5d1 MD |
951 | platform_set_drvdata(pdev, priv); |
952 | pdata = pdev->dev.platform_data; | |
953 | ||
954 | j = 0; | |
955 | for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) { | |
956 | priv->ch[j].lcdc = priv; | |
957 | memcpy(&priv->ch[j].cfg, &pdata->ch[i], sizeof(pdata->ch[i])); | |
958 | ||
959 | error = sh_mobile_lcdc_check_interface(&priv->ch[i]); | |
960 | if (error) { | |
961 | dev_err(&pdev->dev, "unsupported interface type\n"); | |
962 | goto err1; | |
963 | } | |
2feb075a | 964 | init_waitqueue_head(&priv->ch[i].frame_end_wait); |
9dd38819 PE |
965 | priv->ch[j].pan_offset = 0; |
966 | priv->ch[j].new_pan_offset = 0; | |
cfb4f5d1 MD |
967 | |
968 | switch (pdata->ch[i].chan) { | |
969 | case LCDC_CHAN_MAINLCD: | |
970 | priv->ch[j].enabled = 1 << 1; | |
971 | priv->ch[j].reg_offs = lcdc_offs_mainlcd; | |
972 | j++; | |
973 | break; | |
974 | case LCDC_CHAN_SUBLCD: | |
975 | priv->ch[j].enabled = 1 << 2; | |
976 | priv->ch[j].reg_offs = lcdc_offs_sublcd; | |
977 | j++; | |
978 | break; | |
979 | } | |
980 | } | |
981 | ||
982 | if (!j) { | |
983 | dev_err(&pdev->dev, "no channels defined\n"); | |
984 | error = -EINVAL; | |
985 | goto err1; | |
986 | } | |
987 | ||
b51339ff | 988 | error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); |
cfb4f5d1 MD |
989 | if (error) { |
990 | dev_err(&pdev->dev, "unable to setup clocks\n"); | |
991 | goto err1; | |
992 | } | |
993 | ||
cfb4f5d1 MD |
994 | priv->base = ioremap_nocache(res->start, (res->end - res->start) + 1); |
995 | ||
996 | for (i = 0; i < j; i++) { | |
cfb4f5d1 MD |
997 | cfg = &priv->ch[i].cfg; |
998 | ||
e33afddc PM |
999 | priv->ch[i].info = framebuffer_alloc(0, &pdev->dev); |
1000 | if (!priv->ch[i].info) { | |
1001 | dev_err(&pdev->dev, "unable to allocate fb_info\n"); | |
1002 | error = -ENOMEM; | |
1003 | break; | |
1004 | } | |
1005 | ||
1006 | info = priv->ch[i].info; | |
cfb4f5d1 MD |
1007 | info->fbops = &sh_mobile_lcdc_ops; |
1008 | info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres; | |
9dd38819 PE |
1009 | info->var.yres = cfg->lcd_cfg.yres; |
1010 | /* Default Y virtual resolution is 2x panel size */ | |
1011 | info->var.yres_virtual = info->var.yres * 2; | |
ce9c008c MD |
1012 | info->var.width = cfg->lcd_size_cfg.width; |
1013 | info->var.height = cfg->lcd_size_cfg.height; | |
cfb4f5d1 MD |
1014 | info->var.activate = FB_ACTIVATE_NOW; |
1015 | error = sh_mobile_lcdc_set_bpp(&info->var, cfg->bpp); | |
1016 | if (error) | |
1017 | break; | |
1018 | ||
1019 | info->fix = sh_mobile_lcdc_fix; | |
1020 | info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8); | |
9dd38819 PE |
1021 | info->fix.smem_len = info->fix.line_length * |
1022 | info->var.yres_virtual; | |
cfb4f5d1 MD |
1023 | |
1024 | buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, | |
1025 | &priv->ch[i].dma_handle, GFP_KERNEL); | |
1026 | if (!buf) { | |
1027 | dev_err(&pdev->dev, "unable to allocate buffer\n"); | |
1028 | error = -ENOMEM; | |
1029 | break; | |
1030 | } | |
1031 | ||
1032 | info->pseudo_palette = &priv->ch[i].pseudo_palette; | |
1033 | info->flags = FBINFO_FLAG_DEFAULT; | |
1034 | ||
1035 | error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); | |
1036 | if (error < 0) { | |
1037 | dev_err(&pdev->dev, "unable to allocate cmap\n"); | |
1038 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
1039 | buf, priv->ch[i].dma_handle); | |
1040 | break; | |
1041 | } | |
1042 | ||
1043 | memset(buf, 0, info->fix.smem_len); | |
1044 | info->fix.smem_start = priv->ch[i].dma_handle; | |
1045 | info->screen_base = buf; | |
1046 | info->device = &pdev->dev; | |
8564557a | 1047 | info->par = &priv->ch[i]; |
cfb4f5d1 MD |
1048 | } |
1049 | ||
1050 | if (error) | |
1051 | goto err1; | |
1052 | ||
1053 | error = sh_mobile_lcdc_start(priv); | |
1054 | if (error) { | |
1055 | dev_err(&pdev->dev, "unable to start hardware\n"); | |
1056 | goto err1; | |
1057 | } | |
1058 | ||
1059 | for (i = 0; i < j; i++) { | |
1c6a307a PM |
1060 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
1061 | ||
e33afddc | 1062 | info = ch->info; |
1c6a307a PM |
1063 | |
1064 | if (info->fbdefio) { | |
1065 | priv->ch->sglist = vmalloc(sizeof(struct scatterlist) * | |
1066 | info->fix.smem_len >> PAGE_SHIFT); | |
1067 | if (!priv->ch->sglist) { | |
1068 | dev_err(&pdev->dev, "cannot allocate sglist\n"); | |
1069 | goto err1; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | error = register_framebuffer(info); | |
cfb4f5d1 MD |
1074 | if (error < 0) |
1075 | goto err1; | |
cfb4f5d1 | 1076 | |
cfb4f5d1 MD |
1077 | dev_info(info->dev, |
1078 | "registered %s/%s as %dx%d %dbpp.\n", | |
1079 | pdev->name, | |
1c6a307a | 1080 | (ch->cfg.chan == LCDC_CHAN_MAINLCD) ? |
cfb4f5d1 | 1081 | "mainlcd" : "sublcd", |
1c6a307a PM |
1082 | (int) ch->cfg.lcd_cfg.xres, |
1083 | (int) ch->cfg.lcd_cfg.yres, | |
1084 | ch->cfg.bpp); | |
8564557a MD |
1085 | |
1086 | /* deferred io mode: disable clock to save power */ | |
1087 | if (info->fbdefio) | |
1088 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
1089 | } |
1090 | ||
1091 | return 0; | |
1092 | err1: | |
1093 | sh_mobile_lcdc_remove(pdev); | |
1094 | err0: | |
1095 | return error; | |
1096 | } | |
1097 | ||
1098 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) | |
1099 | { | |
1100 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); | |
1101 | struct fb_info *info; | |
1102 | int i; | |
1103 | ||
1104 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) | |
e33afddc PM |
1105 | if (priv->ch[i].info->dev) |
1106 | unregister_framebuffer(priv->ch[i].info); | |
cfb4f5d1 MD |
1107 | |
1108 | sh_mobile_lcdc_stop(priv); | |
1109 | ||
1110 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
e33afddc | 1111 | info = priv->ch[i].info; |
cfb4f5d1 | 1112 | |
e33afddc | 1113 | if (!info || !info->device) |
cfb4f5d1 MD |
1114 | continue; |
1115 | ||
1c6a307a PM |
1116 | if (priv->ch[i].sglist) |
1117 | vfree(priv->ch[i].sglist); | |
1118 | ||
cfb4f5d1 MD |
1119 | dma_free_coherent(&pdev->dev, info->fix.smem_len, |
1120 | info->screen_base, priv->ch[i].dma_handle); | |
1121 | fb_dealloc_cmap(&info->cmap); | |
e33afddc | 1122 | framebuffer_release(info); |
cfb4f5d1 MD |
1123 | } |
1124 | ||
b51339ff MD |
1125 | if (priv->dot_clk) |
1126 | clk_put(priv->dot_clk); | |
0246c471 MD |
1127 | |
1128 | pm_runtime_disable(priv->dev); | |
cfb4f5d1 MD |
1129 | |
1130 | if (priv->base) | |
1131 | iounmap(priv->base); | |
1132 | ||
8564557a MD |
1133 | if (priv->irq) |
1134 | free_irq(priv->irq, priv); | |
cfb4f5d1 MD |
1135 | kfree(priv); |
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | static struct platform_driver sh_mobile_lcdc_driver = { | |
1140 | .driver = { | |
1141 | .name = "sh_mobile_lcdc_fb", | |
1142 | .owner = THIS_MODULE, | |
2feb075a | 1143 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
cfb4f5d1 MD |
1144 | }, |
1145 | .probe = sh_mobile_lcdc_probe, | |
1146 | .remove = sh_mobile_lcdc_remove, | |
1147 | }; | |
1148 | ||
1149 | static int __init sh_mobile_lcdc_init(void) | |
1150 | { | |
1151 | return platform_driver_register(&sh_mobile_lcdc_driver); | |
1152 | } | |
1153 | ||
1154 | static void __exit sh_mobile_lcdc_exit(void) | |
1155 | { | |
1156 | platform_driver_unregister(&sh_mobile_lcdc_driver); | |
1157 | } | |
1158 | ||
1159 | module_init(sh_mobile_lcdc_init); | |
1160 | module_exit(sh_mobile_lcdc_exit); | |
1161 | ||
1162 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); | |
1163 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); | |
1164 | MODULE_LICENSE("GPL v2"); |