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Commit | Line | Data |
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cfb4f5d1 MD |
1 | /* |
2 | * SuperH Mobile LCDC Framebuffer | |
3 | * | |
4 | * Copyright (c) 2008 Magnus Damm | |
5 | * | |
6 | * This file is subject to the terms and conditions of the GNU General Public | |
7 | * License. See the file "COPYING" in the main directory of this archive | |
8 | * for more details. | |
9 | */ | |
10 | ||
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> |
40331b21 | 22 | #include <linux/ioctl.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
225c9a8d | 24 | #include <video/sh_mobile_lcdc.h> |
8564557a | 25 | #include <asm/atomic.h> |
cfb4f5d1 MD |
26 | |
27 | #define PALETTE_NR 16 | |
a6f15ade PE |
28 | #define SIDE_B_OFFSET 0x1000 |
29 | #define MIRROR_OFFSET 0x2000 | |
cfb4f5d1 | 30 | |
cfb4f5d1 MD |
31 | /* shared registers */ |
32 | #define _LDDCKR 0x410 | |
33 | #define _LDDCKSTPR 0x414 | |
34 | #define _LDINTR 0x468 | |
35 | #define _LDSR 0x46c | |
36 | #define _LDCNT1R 0x470 | |
37 | #define _LDCNT2R 0x474 | |
9dd38819 | 38 | #define _LDRCNTR 0x478 |
cfb4f5d1 MD |
39 | #define _LDDDSR 0x47c |
40 | #define _LDDWD0R 0x800 | |
41 | #define _LDDRDR 0x840 | |
42 | #define _LDDWAR 0x900 | |
43 | #define _LDDRAR 0x904 | |
44 | ||
0246c471 MD |
45 | /* shared registers and their order for context save/restore */ |
46 | static int lcdc_shared_regs[] = { | |
47 | _LDDCKR, | |
48 | _LDDCKSTPR, | |
49 | _LDINTR, | |
50 | _LDDDSR, | |
51 | _LDCNT1R, | |
52 | _LDCNT2R, | |
53 | }; | |
54 | #define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs) | |
55 | ||
cfb4f5d1 MD |
56 | /* per-channel registers */ |
57 | enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R, | |
0246c471 | 58 | LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR, |
6011bdea | 59 | LDHAJR, |
0246c471 | 60 | NR_CH_REGS }; |
cfb4f5d1 | 61 | |
0246c471 | 62 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
63 | [LDDCKPAT1R] = 0x400, |
64 | [LDDCKPAT2R] = 0x404, | |
65 | [LDMT1R] = 0x418, | |
66 | [LDMT2R] = 0x41c, | |
67 | [LDMT3R] = 0x420, | |
68 | [LDDFR] = 0x424, | |
69 | [LDSM1R] = 0x428, | |
8564557a | 70 | [LDSM2R] = 0x42c, |
cfb4f5d1 MD |
71 | [LDSA1R] = 0x430, |
72 | [LDMLSR] = 0x438, | |
73 | [LDHCNR] = 0x448, | |
74 | [LDHSYNR] = 0x44c, | |
75 | [LDVLNR] = 0x450, | |
76 | [LDVSYNR] = 0x454, | |
77 | [LDPMR] = 0x460, | |
6011bdea | 78 | [LDHAJR] = 0x4a0, |
cfb4f5d1 MD |
79 | }; |
80 | ||
0246c471 | 81 | static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
82 | [LDDCKPAT1R] = 0x408, |
83 | [LDDCKPAT2R] = 0x40c, | |
84 | [LDMT1R] = 0x600, | |
85 | [LDMT2R] = 0x604, | |
86 | [LDMT3R] = 0x608, | |
87 | [LDDFR] = 0x60c, | |
88 | [LDSM1R] = 0x610, | |
8564557a | 89 | [LDSM2R] = 0x614, |
cfb4f5d1 MD |
90 | [LDSA1R] = 0x618, |
91 | [LDMLSR] = 0x620, | |
92 | [LDHCNR] = 0x624, | |
93 | [LDHSYNR] = 0x628, | |
94 | [LDVLNR] = 0x62c, | |
95 | [LDVSYNR] = 0x630, | |
96 | [LDPMR] = 0x63c, | |
97 | }; | |
98 | ||
99 | #define START_LCDC 0x00000001 | |
100 | #define LCDC_RESET 0x00000100 | |
101 | #define DISPLAY_BEU 0x00000008 | |
102 | #define LCDC_ENABLE 0x00000001 | |
8564557a | 103 | #define LDINTR_FE 0x00000400 |
9dd38819 PE |
104 | #define LDINTR_VSE 0x00000200 |
105 | #define LDINTR_VEE 0x00000100 | |
8564557a | 106 | #define LDINTR_FS 0x00000004 |
9dd38819 PE |
107 | #define LDINTR_VSS 0x00000002 |
108 | #define LDINTR_VES 0x00000001 | |
a6f15ade PE |
109 | #define LDRCNTR_SRS 0x00020000 |
110 | #define LDRCNTR_SRC 0x00010000 | |
111 | #define LDRCNTR_MRS 0x00000002 | |
112 | #define LDRCNTR_MRC 0x00000001 | |
40331b21 | 113 | #define LDSR_MRS 0x00000100 |
cfb4f5d1 | 114 | |
0246c471 MD |
115 | struct sh_mobile_lcdc_priv; |
116 | struct sh_mobile_lcdc_chan { | |
117 | struct sh_mobile_lcdc_priv *lcdc; | |
118 | unsigned long *reg_offs; | |
119 | unsigned long ldmt1r_value; | |
120 | unsigned long enabled; /* ME and SE in LDCNT2R */ | |
121 | struct sh_mobile_lcdc_chan_cfg cfg; | |
122 | u32 pseudo_palette[PALETTE_NR]; | |
123 | unsigned long saved_ch_regs[NR_CH_REGS]; | |
124 | struct fb_info *info; | |
125 | dma_addr_t dma_handle; | |
126 | struct fb_deferred_io defio; | |
127 | struct scatterlist *sglist; | |
128 | unsigned long frame_end; | |
9dd38819 | 129 | unsigned long pan_offset; |
0246c471 | 130 | wait_queue_head_t frame_end_wait; |
40331b21 | 131 | struct completion vsync_completion; |
0246c471 MD |
132 | }; |
133 | ||
134 | struct sh_mobile_lcdc_priv { | |
135 | void __iomem *base; | |
136 | int irq; | |
137 | atomic_t hw_usecnt; | |
138 | struct device *dev; | |
139 | struct clk *dot_clk; | |
140 | unsigned long lddckr; | |
141 | struct sh_mobile_lcdc_chan ch[2]; | |
6011bdea | 142 | struct notifier_block notifier; |
0246c471 MD |
143 | unsigned long saved_shared_regs[NR_SHARED_REGS]; |
144 | int started; | |
145 | }; | |
146 | ||
a6f15ade PE |
147 | static bool banked(int reg_nr) |
148 | { | |
149 | switch (reg_nr) { | |
150 | case LDMT1R: | |
151 | case LDMT2R: | |
152 | case LDMT3R: | |
153 | case LDDFR: | |
154 | case LDSM1R: | |
155 | case LDSA1R: | |
156 | case LDMLSR: | |
157 | case LDHCNR: | |
158 | case LDHSYNR: | |
159 | case LDVLNR: | |
160 | case LDVSYNR: | |
161 | return true; | |
162 | } | |
163 | return false; | |
164 | } | |
165 | ||
cfb4f5d1 MD |
166 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
167 | int reg_nr, unsigned long data) | |
168 | { | |
169 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); | |
a6f15ade PE |
170 | if (banked(reg_nr)) |
171 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
172 | SIDE_B_OFFSET); | |
173 | } | |
174 | ||
175 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, | |
176 | int reg_nr, unsigned long data) | |
177 | { | |
178 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
179 | MIRROR_OFFSET); | |
cfb4f5d1 MD |
180 | } |
181 | ||
182 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, | |
183 | int reg_nr) | |
184 | { | |
185 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); | |
186 | } | |
187 | ||
188 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, | |
189 | unsigned long reg_offs, unsigned long data) | |
190 | { | |
191 | iowrite32(data, priv->base + reg_offs); | |
192 | } | |
193 | ||
194 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, | |
195 | unsigned long reg_offs) | |
196 | { | |
197 | return ioread32(priv->base + reg_offs); | |
198 | } | |
199 | ||
200 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, | |
201 | unsigned long reg_offs, | |
202 | unsigned long mask, unsigned long until) | |
203 | { | |
204 | while ((lcdc_read(priv, reg_offs) & mask) != until) | |
205 | cpu_relax(); | |
206 | } | |
207 | ||
208 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) | |
209 | { | |
210 | return chan->cfg.chan == LCDC_CHAN_SUBLCD; | |
211 | } | |
212 | ||
213 | static void lcdc_sys_write_index(void *handle, unsigned long data) | |
214 | { | |
215 | struct sh_mobile_lcdc_chan *ch = handle; | |
216 | ||
217 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x10000000); | |
218 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
219 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 220 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
221 | } |
222 | ||
223 | static void lcdc_sys_write_data(void *handle, unsigned long data) | |
224 | { | |
225 | struct sh_mobile_lcdc_chan *ch = handle; | |
226 | ||
227 | lcdc_write(ch->lcdc, _LDDWD0R, data | 0x11000000); | |
228 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
229 | lcdc_write(ch->lcdc, _LDDWAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
909f10de | 230 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 MD |
231 | } |
232 | ||
233 | static unsigned long lcdc_sys_read_data(void *handle) | |
234 | { | |
235 | struct sh_mobile_lcdc_chan *ch = handle; | |
236 | ||
237 | lcdc_write(ch->lcdc, _LDDRDR, 0x01000000); | |
238 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); | |
239 | lcdc_write(ch->lcdc, _LDDRAR, 1 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
240 | udelay(1); | |
909f10de | 241 | lcdc_wait_bit(ch->lcdc, _LDSR, 2, 0); |
cfb4f5d1 | 242 | |
ec56b66f | 243 | return lcdc_read(ch->lcdc, _LDDRDR) & 0x3ffff; |
cfb4f5d1 MD |
244 | } |
245 | ||
246 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { | |
247 | lcdc_sys_write_index, | |
248 | lcdc_sys_write_data, | |
249 | lcdc_sys_read_data, | |
250 | }; | |
251 | ||
8564557a MD |
252 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
253 | { | |
0246c471 MD |
254 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
255 | pm_runtime_get_sync(priv->dev); | |
8564557a MD |
256 | if (priv->dot_clk) |
257 | clk_enable(priv->dot_clk); | |
258 | } | |
259 | } | |
260 | ||
261 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) | |
262 | { | |
0246c471 | 263 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
8564557a MD |
264 | if (priv->dot_clk) |
265 | clk_disable(priv->dot_clk); | |
0246c471 | 266 | pm_runtime_put(priv->dev); |
8564557a MD |
267 | } |
268 | } | |
8564557a | 269 | |
1c6a307a PM |
270 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
271 | struct list_head *pagelist) | |
272 | { | |
273 | struct sh_mobile_lcdc_chan *ch = info->par; | |
274 | unsigned int nr_pages_max = info->fix.smem_len >> PAGE_SHIFT; | |
275 | struct page *page; | |
276 | int nr_pages = 0; | |
277 | ||
278 | sg_init_table(ch->sglist, nr_pages_max); | |
279 | ||
280 | list_for_each_entry(page, pagelist, lru) | |
281 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); | |
282 | ||
283 | return nr_pages; | |
284 | } | |
285 | ||
8564557a MD |
286 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
287 | struct list_head *pagelist) | |
288 | { | |
289 | struct sh_mobile_lcdc_chan *ch = info->par; | |
ef61aae4 | 290 | struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg; |
8564557a MD |
291 | |
292 | /* enable clocks before accessing hardware */ | |
293 | sh_mobile_lcdc_clk_on(ch->lcdc); | |
294 | ||
5c1a56b5 PM |
295 | /* |
296 | * It's possible to get here without anything on the pagelist via | |
297 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() | |
298 | * invocation. In the former case, the acceleration routines are | |
299 | * stepped in to when using the framebuffer console causing the | |
300 | * workqueue to be scheduled without any dirty pages on the list. | |
301 | * | |
302 | * Despite this, a panel update is still needed given that the | |
303 | * acceleration routines have their own methods for writing in | |
304 | * that still need to be updated. | |
305 | * | |
306 | * The fsync() and empty pagelist case could be optimized for, | |
307 | * but we don't bother, as any application exhibiting such | |
308 | * behaviour is fundamentally broken anyways. | |
309 | */ | |
310 | if (!list_empty(pagelist)) { | |
311 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); | |
312 | ||
313 | /* trigger panel update */ | |
314 | dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
315 | if (bcfg->start_transfer) |
316 | bcfg->start_transfer(bcfg->board_data, ch, | |
317 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 PM |
318 | lcdc_write_chan(ch, LDSM2R, 1); |
319 | dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
320 | } else { |
321 | if (bcfg->start_transfer) | |
322 | bcfg->start_transfer(bcfg->board_data, ch, | |
323 | &sh_mobile_lcdc_sys_bus_ops); | |
5c1a56b5 | 324 | lcdc_write_chan(ch, LDSM2R, 1); |
ef61aae4 | 325 | } |
8564557a MD |
326 | } |
327 | ||
328 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) | |
329 | { | |
330 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
331 | ||
332 | if (fbdefio) | |
333 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); | |
334 | } | |
335 | ||
336 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) | |
337 | { | |
338 | struct sh_mobile_lcdc_priv *priv = data; | |
2feb075a | 339 | struct sh_mobile_lcdc_chan *ch; |
8564557a | 340 | unsigned long tmp; |
9dd38819 | 341 | unsigned long ldintr; |
2feb075a MD |
342 | int is_sub; |
343 | int k; | |
8564557a MD |
344 | |
345 | /* acknowledge interrupt */ | |
9dd38819 PE |
346 | ldintr = tmp = lcdc_read(priv, _LDINTR); |
347 | /* | |
348 | * disable further VSYNC End IRQs, preserve all other enabled IRQs, | |
349 | * write 0 to bits 0-6 to ack all triggered IRQs. | |
350 | */ | |
351 | tmp &= 0xffffff00 & ~LDINTR_VEE; | |
8564557a MD |
352 | lcdc_write(priv, _LDINTR, tmp); |
353 | ||
2feb075a MD |
354 | /* figure out if this interrupt is for main or sub lcd */ |
355 | is_sub = (lcdc_read(priv, _LDSR) & (1 << 10)) ? 1 : 0; | |
356 | ||
9dd38819 | 357 | /* wake up channel and disable clocks */ |
2feb075a MD |
358 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
359 | ch = &priv->ch[k]; | |
360 | ||
361 | if (!ch->enabled) | |
362 | continue; | |
363 | ||
9dd38819 PE |
364 | /* Frame Start */ |
365 | if (ldintr & LDINTR_FS) { | |
366 | if (is_sub == lcdc_chan_is_sublcd(ch)) { | |
367 | ch->frame_end = 1; | |
368 | wake_up(&ch->frame_end_wait); | |
2feb075a | 369 | |
9dd38819 PE |
370 | sh_mobile_lcdc_clk_off(priv); |
371 | } | |
372 | } | |
373 | ||
374 | /* VSYNC End */ | |
40331b21 PE |
375 | if (ldintr & LDINTR_VES) |
376 | complete(&ch->vsync_completion); | |
2feb075a MD |
377 | } |
378 | ||
8564557a MD |
379 | return IRQ_HANDLED; |
380 | } | |
381 | ||
cfb4f5d1 MD |
382 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
383 | int start) | |
384 | { | |
385 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); | |
386 | int k; | |
387 | ||
388 | /* start or stop the lcdc */ | |
389 | if (start) | |
390 | lcdc_write(priv, _LDCNT2R, tmp | START_LCDC); | |
391 | else | |
392 | lcdc_write(priv, _LDCNT2R, tmp & ~START_LCDC); | |
393 | ||
394 | /* wait until power is applied/stopped on all channels */ | |
395 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
396 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) | |
397 | while (1) { | |
398 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) & 3; | |
399 | if (start && tmp == 3) | |
400 | break; | |
401 | if (!start && tmp == 0) | |
402 | break; | |
403 | cpu_relax(); | |
404 | } | |
405 | ||
406 | if (!start) | |
407 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ | |
408 | } | |
409 | ||
6011bdea GL |
410 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
411 | { | |
412 | struct fb_var_screeninfo *var = &ch->info->var; | |
413 | unsigned long h_total, hsync_pos; | |
414 | u32 tmp; | |
415 | ||
416 | tmp = ch->ldmt1r_value; | |
417 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; | |
418 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; | |
419 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; | |
420 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; | |
421 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; | |
422 | tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; | |
423 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0; | |
424 | lcdc_write_chan(ch, LDMT1R, tmp); | |
425 | ||
426 | /* setup SYS bus */ | |
427 | lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); | |
428 | lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); | |
429 | ||
430 | /* horizontal configuration */ | |
431 | h_total = var->xres + var->hsync_len + | |
432 | var->left_margin + var->right_margin; | |
433 | tmp = h_total / 8; /* HTCN */ | |
434 | tmp |= (var->xres / 8) << 16; /* HDCN */ | |
435 | lcdc_write_chan(ch, LDHCNR, tmp); | |
436 | ||
437 | hsync_pos = var->xres + var->right_margin; | |
438 | tmp = hsync_pos / 8; /* HSYNP */ | |
439 | tmp |= (var->hsync_len / 8) << 16; /* HSYNW */ | |
440 | lcdc_write_chan(ch, LDHSYNR, tmp); | |
441 | ||
442 | /* vertical configuration */ | |
443 | tmp = var->yres + var->vsync_len + | |
444 | var->upper_margin + var->lower_margin; /* VTLN */ | |
445 | tmp |= var->yres << 16; /* VDLN */ | |
446 | lcdc_write_chan(ch, LDVLNR, tmp); | |
447 | ||
448 | tmp = var->yres + var->lower_margin; /* VSYNP */ | |
449 | tmp |= var->vsync_len << 16; /* VSYNW */ | |
450 | lcdc_write_chan(ch, LDVSYNR, tmp); | |
451 | ||
452 | /* Adjust horizontal synchronisation for HDMI */ | |
453 | tmp = ((var->xres & 7) << 24) | | |
454 | ((h_total & 7) << 16) | | |
455 | ((var->hsync_len & 7) << 8) | | |
456 | hsync_pos; | |
457 | lcdc_write_chan(ch, LDHAJR, tmp); | |
458 | } | |
459 | ||
cfb4f5d1 MD |
460 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
461 | { | |
462 | struct sh_mobile_lcdc_chan *ch; | |
cfb4f5d1 MD |
463 | struct sh_mobile_lcdc_board_cfg *board_cfg; |
464 | unsigned long tmp; | |
465 | int k, m; | |
466 | int ret = 0; | |
467 | ||
8564557a MD |
468 | /* enable clocks before accessing the hardware */ |
469 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
470 | if (priv->ch[k].enabled) | |
471 | sh_mobile_lcdc_clk_on(priv); | |
472 | ||
cfb4f5d1 MD |
473 | /* reset */ |
474 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LCDC_RESET); | |
475 | lcdc_wait_bit(priv, _LDCNT2R, LCDC_RESET, 0); | |
476 | ||
477 | /* enable LCDC channels */ | |
478 | tmp = lcdc_read(priv, _LDCNT2R); | |
479 | tmp |= priv->ch[0].enabled; | |
480 | tmp |= priv->ch[1].enabled; | |
481 | lcdc_write(priv, _LDCNT2R, tmp); | |
482 | ||
483 | /* read data from external memory, avoid using the BEU for now */ | |
484 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) & ~DISPLAY_BEU); | |
485 | ||
486 | /* stop the lcdc first */ | |
487 | sh_mobile_lcdc_start_stop(priv, 0); | |
488 | ||
489 | /* configure clocks */ | |
490 | tmp = priv->lddckr; | |
491 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
492 | ch = &priv->ch[k]; | |
493 | ||
494 | if (!priv->ch[k].enabled) | |
495 | continue; | |
496 | ||
497 | m = ch->cfg.clock_divider; | |
498 | if (!m) | |
499 | continue; | |
500 | ||
501 | if (m == 1) | |
502 | m = 1 << 6; | |
503 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); | |
504 | ||
505 | lcdc_write_chan(ch, LDDCKPAT1R, 0x00000000); | |
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); | |
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 MD |
591 | board_cfg = &ch->cfg.board_cfg; |
592 | if (board_cfg->display_on) | |
c2439398 | 593 | board_cfg->display_on(board_cfg->board_data, ch->info); |
cfb4f5d1 MD |
594 | } |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
599 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) | |
600 | { | |
601 | struct sh_mobile_lcdc_chan *ch; | |
602 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
603 | int k; | |
604 | ||
2feb075a | 605 | /* clean up deferred io and ask board code to disable panel */ |
cfb4f5d1 MD |
606 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
607 | ch = &priv->ch[k]; | |
21bc1f02 MD |
608 | if (!ch->enabled) |
609 | continue; | |
8564557a | 610 | |
2feb075a MD |
611 | /* deferred io mode: |
612 | * flush frame, and wait for frame end interrupt | |
613 | * clean up deferred io and enable clock | |
614 | */ | |
5ef6b505 | 615 | if (ch->info && ch->info->fbdefio) { |
2feb075a | 616 | ch->frame_end = 0; |
e33afddc | 617 | schedule_delayed_work(&ch->info->deferred_work, 0); |
2feb075a | 618 | wait_event(ch->frame_end_wait, ch->frame_end); |
e33afddc PM |
619 | fb_deferred_io_cleanup(ch->info); |
620 | ch->info->fbdefio = NULL; | |
2feb075a | 621 | sh_mobile_lcdc_clk_on(priv); |
8564557a | 622 | } |
2feb075a MD |
623 | |
624 | board_cfg = &ch->cfg.board_cfg; | |
625 | if (board_cfg->display_off) | |
626 | board_cfg->display_off(board_cfg->board_data); | |
cfb4f5d1 MD |
627 | } |
628 | ||
629 | /* stop the lcdc */ | |
8e9bb19e MD |
630 | if (priv->started) { |
631 | sh_mobile_lcdc_start_stop(priv, 0); | |
632 | priv->started = 0; | |
633 | } | |
b51339ff | 634 | |
8564557a MD |
635 | /* stop clocks */ |
636 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
637 | if (priv->ch[k].enabled) | |
638 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
639 | } |
640 | ||
641 | static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) | |
642 | { | |
643 | int ifm, miftyp; | |
644 | ||
645 | switch (ch->cfg.interface_type) { | |
646 | case RGB8: ifm = 0; miftyp = 0; break; | |
647 | case RGB9: ifm = 0; miftyp = 4; break; | |
648 | case RGB12A: ifm = 0; miftyp = 5; break; | |
649 | case RGB12B: ifm = 0; miftyp = 6; break; | |
650 | case RGB16: ifm = 0; miftyp = 7; break; | |
651 | case RGB18: ifm = 0; miftyp = 10; break; | |
652 | case RGB24: ifm = 0; miftyp = 11; break; | |
653 | case SYS8A: ifm = 1; miftyp = 0; break; | |
654 | case SYS8B: ifm = 1; miftyp = 1; break; | |
655 | case SYS8C: ifm = 1; miftyp = 2; break; | |
656 | case SYS8D: ifm = 1; miftyp = 3; break; | |
657 | case SYS9: ifm = 1; miftyp = 4; break; | |
658 | case SYS12: ifm = 1; miftyp = 5; break; | |
659 | case SYS16A: ifm = 1; miftyp = 7; break; | |
660 | case SYS16B: ifm = 1; miftyp = 8; break; | |
661 | case SYS16C: ifm = 1; miftyp = 9; break; | |
662 | case SYS18: ifm = 1; miftyp = 10; break; | |
663 | case SYS24: ifm = 1; miftyp = 11; break; | |
664 | default: goto bad; | |
665 | } | |
666 | ||
667 | /* SUBLCD only supports SYS interface */ | |
668 | if (lcdc_chan_is_sublcd(ch)) { | |
669 | if (ifm == 0) | |
670 | goto bad; | |
671 | else | |
672 | ifm = 0; | |
673 | } | |
674 | ||
675 | ch->ldmt1r_value = (ifm << 12) | miftyp; | |
676 | return 0; | |
677 | bad: | |
678 | return -EINVAL; | |
679 | } | |
680 | ||
b51339ff MD |
681 | static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, |
682 | int clock_source, | |
cfb4f5d1 MD |
683 | struct sh_mobile_lcdc_priv *priv) |
684 | { | |
685 | char *str; | |
686 | int icksel; | |
687 | ||
688 | switch (clock_source) { | |
689 | case LCDC_CLK_BUS: str = "bus_clk"; icksel = 0; break; | |
690 | case LCDC_CLK_PERIPHERAL: str = "peripheral_clk"; icksel = 1; break; | |
691 | case LCDC_CLK_EXTERNAL: str = NULL; icksel = 2; break; | |
692 | default: | |
693 | return -EINVAL; | |
694 | } | |
695 | ||
696 | priv->lddckr = icksel << 16; | |
697 | ||
698 | if (str) { | |
b51339ff MD |
699 | priv->dot_clk = clk_get(&pdev->dev, str); |
700 | if (IS_ERR(priv->dot_clk)) { | |
701 | dev_err(&pdev->dev, "cannot get dot clock %s\n", str); | |
b51339ff | 702 | return PTR_ERR(priv->dot_clk); |
cfb4f5d1 | 703 | } |
cfb4f5d1 | 704 | } |
0246c471 MD |
705 | |
706 | /* Runtime PM support involves two step for this driver: | |
707 | * 1) Enable Runtime PM | |
708 | * 2) Force Runtime PM Resume since hardware is accessed from probe() | |
709 | */ | |
8bed9055 | 710 | priv->dev = &pdev->dev; |
0246c471 MD |
711 | pm_runtime_enable(priv->dev); |
712 | pm_runtime_resume(priv->dev); | |
cfb4f5d1 MD |
713 | return 0; |
714 | } | |
715 | ||
716 | static int sh_mobile_lcdc_setcolreg(u_int regno, | |
717 | u_int red, u_int green, u_int blue, | |
718 | u_int transp, struct fb_info *info) | |
719 | { | |
720 | u32 *palette = info->pseudo_palette; | |
721 | ||
722 | if (regno >= PALETTE_NR) | |
723 | return -EINVAL; | |
724 | ||
725 | /* only FB_VISUAL_TRUECOLOR supported */ | |
726 | ||
727 | red >>= 16 - info->var.red.length; | |
728 | green >>= 16 - info->var.green.length; | |
729 | blue >>= 16 - info->var.blue.length; | |
730 | transp >>= 16 - info->var.transp.length; | |
731 | ||
732 | palette[regno] = (red << info->var.red.offset) | | |
733 | (green << info->var.green.offset) | | |
734 | (blue << info->var.blue.offset) | | |
735 | (transp << info->var.transp.offset); | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
740 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { | |
741 | .id = "SH Mobile LCDC", | |
742 | .type = FB_TYPE_PACKED_PIXELS, | |
743 | .visual = FB_VISUAL_TRUECOLOR, | |
744 | .accel = FB_ACCEL_NONE, | |
9dd38819 PE |
745 | .xpanstep = 0, |
746 | .ypanstep = 1, | |
747 | .ywrapstep = 0, | |
cfb4f5d1 MD |
748 | }; |
749 | ||
8564557a MD |
750 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
751 | const struct fb_fillrect *rect) | |
752 | { | |
753 | sys_fillrect(info, rect); | |
754 | sh_mobile_lcdc_deferred_io_touch(info); | |
755 | } | |
756 | ||
757 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, | |
758 | const struct fb_copyarea *area) | |
759 | { | |
760 | sys_copyarea(info, area); | |
761 | sh_mobile_lcdc_deferred_io_touch(info); | |
762 | } | |
763 | ||
764 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, | |
765 | const struct fb_image *image) | |
766 | { | |
767 | sys_imageblit(info, image); | |
768 | sh_mobile_lcdc_deferred_io_touch(info); | |
769 | } | |
770 | ||
9dd38819 PE |
771 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
772 | struct fb_info *info) | |
773 | { | |
774 | struct sh_mobile_lcdc_chan *ch = info->par; | |
92e1f9a7 PE |
775 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
776 | unsigned long ldrcntr; | |
777 | unsigned long new_pan_offset; | |
778 | ||
779 | new_pan_offset = (var->yoffset * info->fix.line_length) + | |
780 | (var->xoffset * (info->var.bits_per_pixel / 8)); | |
9dd38819 | 781 | |
92e1f9a7 | 782 | if (new_pan_offset == ch->pan_offset) |
9dd38819 PE |
783 | return 0; /* No change, do nothing */ |
784 | ||
92e1f9a7 | 785 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
9dd38819 | 786 | |
92e1f9a7 PE |
787 | /* Set the source address for the next refresh */ |
788 | lcdc_write_chan_mirror(ch, LDSA1R, ch->dma_handle + new_pan_offset); | |
789 | if (lcdc_chan_is_sublcd(ch)) | |
790 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); | |
791 | else | |
792 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); | |
793 | ||
794 | ch->pan_offset = new_pan_offset; | |
795 | ||
796 | sh_mobile_lcdc_deferred_io_touch(info); | |
9dd38819 PE |
797 | |
798 | return 0; | |
799 | } | |
800 | ||
40331b21 PE |
801 | static int sh_mobile_wait_for_vsync(struct fb_info *info) |
802 | { | |
803 | struct sh_mobile_lcdc_chan *ch = info->par; | |
804 | unsigned long ldintr; | |
805 | int ret; | |
806 | ||
807 | /* Enable VSync End interrupt */ | |
808 | ldintr = lcdc_read(ch->lcdc, _LDINTR); | |
809 | ldintr |= LDINTR_VEE; | |
810 | lcdc_write(ch->lcdc, _LDINTR, ldintr); | |
811 | ||
812 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, | |
813 | msecs_to_jiffies(100)); | |
814 | if (!ret) | |
815 | return -ETIMEDOUT; | |
816 | ||
817 | return 0; | |
818 | } | |
819 | ||
820 | static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd, | |
821 | unsigned long arg) | |
822 | { | |
823 | int retval; | |
824 | ||
825 | switch (cmd) { | |
826 | case FBIO_WAITFORVSYNC: | |
827 | retval = sh_mobile_wait_for_vsync(info); | |
828 | break; | |
829 | ||
830 | default: | |
831 | retval = -ENOIOCTLCMD; | |
832 | break; | |
833 | } | |
834 | return retval; | |
835 | } | |
836 | ||
cfb4f5d1 | 837 | static struct fb_ops sh_mobile_lcdc_ops = { |
9dd38819 | 838 | .owner = THIS_MODULE, |
cfb4f5d1 | 839 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2540c111 MD |
840 | .fb_read = fb_sys_read, |
841 | .fb_write = fb_sys_write, | |
8564557a MD |
842 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
843 | .fb_copyarea = sh_mobile_lcdc_copyarea, | |
844 | .fb_imageblit = sh_mobile_lcdc_imageblit, | |
9dd38819 | 845 | .fb_pan_display = sh_mobile_fb_pan_display, |
40331b21 | 846 | .fb_ioctl = sh_mobile_ioctl, |
cfb4f5d1 MD |
847 | }; |
848 | ||
849 | static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp) | |
850 | { | |
851 | switch (bpp) { | |
852 | case 16: /* PKF[4:0] = 00011 - RGB 565 */ | |
853 | var->red.offset = 11; | |
854 | var->red.length = 5; | |
855 | var->green.offset = 5; | |
856 | var->green.length = 6; | |
857 | var->blue.offset = 0; | |
858 | var->blue.length = 5; | |
859 | var->transp.offset = 0; | |
860 | var->transp.length = 0; | |
861 | break; | |
862 | ||
863 | case 32: /* PKF[4:0] = 00000 - RGB 888 | |
864 | * sh7722 pdf says 00RRGGBB but reality is GGBB00RR | |
865 | * this may be because LDDDSR has word swap enabled.. | |
866 | */ | |
867 | var->red.offset = 0; | |
868 | var->red.length = 8; | |
869 | var->green.offset = 24; | |
870 | var->green.length = 8; | |
871 | var->blue.offset = 16; | |
872 | var->blue.length = 8; | |
873 | var->transp.offset = 0; | |
874 | var->transp.length = 0; | |
875 | break; | |
876 | default: | |
877 | return -EINVAL; | |
878 | } | |
879 | var->bits_per_pixel = bpp; | |
880 | var->red.msb_right = 0; | |
881 | var->green.msb_right = 0; | |
882 | var->blue.msb_right = 0; | |
883 | var->transp.msb_right = 0; | |
884 | return 0; | |
885 | } | |
886 | ||
2feb075a MD |
887 | static int sh_mobile_lcdc_suspend(struct device *dev) |
888 | { | |
889 | struct platform_device *pdev = to_platform_device(dev); | |
890 | ||
891 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); | |
892 | return 0; | |
893 | } | |
894 | ||
895 | static int sh_mobile_lcdc_resume(struct device *dev) | |
896 | { | |
897 | struct platform_device *pdev = to_platform_device(dev); | |
898 | ||
899 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); | |
900 | } | |
901 | ||
0246c471 MD |
902 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
903 | { | |
904 | struct platform_device *pdev = to_platform_device(dev); | |
905 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
906 | struct sh_mobile_lcdc_chan *ch; | |
907 | int k, n; | |
908 | ||
909 | /* save per-channel registers */ | |
910 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
911 | ch = &p->ch[k]; | |
912 | if (!ch->enabled) | |
913 | continue; | |
914 | for (n = 0; n < NR_CH_REGS; n++) | |
915 | ch->saved_ch_regs[n] = lcdc_read_chan(ch, n); | |
916 | } | |
917 | ||
918 | /* save shared registers */ | |
919 | for (n = 0; n < NR_SHARED_REGS; n++) | |
920 | p->saved_shared_regs[n] = lcdc_read(p, lcdc_shared_regs[n]); | |
921 | ||
922 | /* turn off LCDC hardware */ | |
923 | lcdc_write(p, _LDCNT1R, 0); | |
924 | return 0; | |
925 | } | |
926 | ||
927 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) | |
928 | { | |
929 | struct platform_device *pdev = to_platform_device(dev); | |
930 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
931 | struct sh_mobile_lcdc_chan *ch; | |
932 | int k, n; | |
933 | ||
934 | /* restore per-channel registers */ | |
935 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
936 | ch = &p->ch[k]; | |
937 | if (!ch->enabled) | |
938 | continue; | |
939 | for (n = 0; n < NR_CH_REGS; n++) | |
940 | lcdc_write_chan(ch, n, ch->saved_ch_regs[n]); | |
941 | } | |
942 | ||
943 | /* restore shared registers */ | |
944 | for (n = 0; n < NR_SHARED_REGS; n++) | |
945 | lcdc_write(p, lcdc_shared_regs[n], p->saved_shared_regs[n]); | |
946 | ||
947 | return 0; | |
948 | } | |
949 | ||
47145210 | 950 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2feb075a MD |
951 | .suspend = sh_mobile_lcdc_suspend, |
952 | .resume = sh_mobile_lcdc_resume, | |
0246c471 MD |
953 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
954 | .runtime_resume = sh_mobile_lcdc_runtime_resume, | |
2feb075a MD |
955 | }; |
956 | ||
6011bdea GL |
957 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
958 | unsigned long action, void *data) | |
959 | { | |
960 | struct fb_event *event = data; | |
961 | struct fb_info *info = event->info; | |
962 | struct sh_mobile_lcdc_chan *ch = info->par; | |
963 | struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; | |
964 | struct fb_var_screeninfo *var; | |
965 | ||
966 | if (&ch->lcdc->notifier != nb) | |
baf16374 | 967 | return NOTIFY_DONE; |
6011bdea GL |
968 | |
969 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", | |
970 | __func__, action, event->data); | |
971 | ||
972 | switch(action) { | |
973 | case FB_EVENT_SUSPEND: | |
974 | if (board_cfg->display_off) | |
975 | board_cfg->display_off(board_cfg->board_data); | |
976 | pm_runtime_put(info->device); | |
977 | break; | |
978 | case FB_EVENT_RESUME: | |
979 | var = &info->var; | |
980 | ||
981 | /* HDMI must be enabled before LCDC configuration */ | |
982 | if (board_cfg->display_on) | |
983 | board_cfg->display_on(board_cfg->board_data, ch->info); | |
984 | ||
985 | /* Check if the new display is not in our modelist */ | |
986 | if (ch->info->modelist.next && | |
987 | !fb_match_mode(var, &ch->info->modelist)) { | |
988 | struct fb_videomode mode; | |
989 | int ret; | |
990 | ||
991 | /* Can we handle this display? */ | |
44432407 GL |
992 | if (var->xres > ch->cfg.lcd_cfg[0].xres || |
993 | var->yres > ch->cfg.lcd_cfg[0].yres) | |
baf16374 GL |
994 | /* |
995 | * LCDC resume failed, no need to continue with | |
996 | * the notifier chain | |
997 | */ | |
998 | return notifier_from_errno(-ENOMEM); | |
6011bdea GL |
999 | |
1000 | /* Add to the modelist */ | |
1001 | fb_var_to_videomode(&mode, var); | |
1002 | ret = fb_add_videomode(&mode, &ch->info->modelist); | |
1003 | if (ret < 0) | |
baf16374 | 1004 | return notifier_from_errno(ret); |
6011bdea GL |
1005 | } |
1006 | ||
1007 | pm_runtime_get_sync(info->device); | |
1008 | ||
1009 | sh_mobile_lcdc_geometry(ch); | |
6011bdea GL |
1010 | } |
1011 | ||
baf16374 | 1012 | return NOTIFY_OK; |
6011bdea GL |
1013 | } |
1014 | ||
cfb4f5d1 MD |
1015 | static int sh_mobile_lcdc_remove(struct platform_device *pdev); |
1016 | ||
c2e13037 | 1017 | static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) |
cfb4f5d1 MD |
1018 | { |
1019 | struct fb_info *info; | |
1020 | struct sh_mobile_lcdc_priv *priv; | |
01ac25b5 | 1021 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
cfb4f5d1 MD |
1022 | struct sh_mobile_lcdc_chan_cfg *cfg; |
1023 | struct resource *res; | |
1024 | int error; | |
1025 | void *buf; | |
1026 | int i, j; | |
1027 | ||
01ac25b5 | 1028 | if (!pdata) { |
cfb4f5d1 | 1029 | dev_err(&pdev->dev, "no platform data defined\n"); |
8bed9055 | 1030 | return -EINVAL; |
cfb4f5d1 MD |
1031 | } |
1032 | ||
1033 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
8564557a MD |
1034 | i = platform_get_irq(pdev, 0); |
1035 | if (!res || i < 0) { | |
1036 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
8bed9055 | 1037 | return -ENOENT; |
cfb4f5d1 MD |
1038 | } |
1039 | ||
1040 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
1041 | if (!priv) { | |
1042 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
8bed9055 | 1043 | return -ENOMEM; |
cfb4f5d1 MD |
1044 | } |
1045 | ||
8bed9055 GL |
1046 | platform_set_drvdata(pdev, priv); |
1047 | ||
8564557a | 1048 | error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED, |
7ad33e74 | 1049 | dev_name(&pdev->dev), priv); |
8564557a MD |
1050 | if (error) { |
1051 | dev_err(&pdev->dev, "unable to request irq\n"); | |
1052 | goto err1; | |
1053 | } | |
1054 | ||
1055 | priv->irq = i; | |
5ef6b505 | 1056 | atomic_set(&priv->hw_usecnt, -1); |
cfb4f5d1 MD |
1057 | |
1058 | j = 0; | |
1059 | for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) { | |
01ac25b5 | 1060 | struct sh_mobile_lcdc_chan *ch = priv->ch + j; |
cfb4f5d1 | 1061 | |
01ac25b5 GL |
1062 | ch->lcdc = priv; |
1063 | memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i])); | |
1064 | ||
1065 | error = sh_mobile_lcdc_check_interface(ch); | |
cfb4f5d1 MD |
1066 | if (error) { |
1067 | dev_err(&pdev->dev, "unsupported interface type\n"); | |
1068 | goto err1; | |
1069 | } | |
01ac25b5 GL |
1070 | init_waitqueue_head(&ch->frame_end_wait); |
1071 | init_completion(&ch->vsync_completion); | |
1072 | ch->pan_offset = 0; | |
cfb4f5d1 MD |
1073 | |
1074 | switch (pdata->ch[i].chan) { | |
1075 | case LCDC_CHAN_MAINLCD: | |
01ac25b5 GL |
1076 | ch->enabled = 1 << 1; |
1077 | ch->reg_offs = lcdc_offs_mainlcd; | |
cfb4f5d1 MD |
1078 | j++; |
1079 | break; | |
1080 | case LCDC_CHAN_SUBLCD: | |
01ac25b5 GL |
1081 | ch->enabled = 1 << 2; |
1082 | ch->reg_offs = lcdc_offs_sublcd; | |
cfb4f5d1 MD |
1083 | j++; |
1084 | break; | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | if (!j) { | |
1089 | dev_err(&pdev->dev, "no channels defined\n"); | |
1090 | error = -EINVAL; | |
1091 | goto err1; | |
1092 | } | |
1093 | ||
dba6f385 GL |
1094 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
1095 | if (!priv->base) | |
1096 | goto err1; | |
1097 | ||
b51339ff | 1098 | error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); |
cfb4f5d1 MD |
1099 | if (error) { |
1100 | dev_err(&pdev->dev, "unable to setup clocks\n"); | |
1101 | goto err1; | |
1102 | } | |
1103 | ||
cfb4f5d1 | 1104 | for (i = 0; i < j; i++) { |
6011bdea | 1105 | struct fb_var_screeninfo *var; |
01ac25b5 GL |
1106 | const struct fb_videomode *lcd_cfg; |
1107 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; | |
cfb4f5d1 | 1108 | |
01ac25b5 GL |
1109 | cfg = &ch->cfg; |
1110 | ||
1111 | ch->info = framebuffer_alloc(0, &pdev->dev); | |
1112 | if (!ch->info) { | |
e33afddc PM |
1113 | dev_err(&pdev->dev, "unable to allocate fb_info\n"); |
1114 | error = -ENOMEM; | |
1115 | break; | |
1116 | } | |
1117 | ||
01ac25b5 | 1118 | info = ch->info; |
6011bdea | 1119 | var = &info->var; |
44432407 | 1120 | lcd_cfg = &cfg->lcd_cfg[0]; |
cfb4f5d1 | 1121 | info->fbops = &sh_mobile_lcdc_ops; |
14177a5e | 1122 | fb_videomode_to_var(var, lcd_cfg); |
9dd38819 | 1123 | /* Default Y virtual resolution is 2x panel size */ |
6011bdea | 1124 | var->yres_virtual = var->yres * 2; |
6011bdea GL |
1125 | |
1126 | error = sh_mobile_lcdc_set_bpp(var, cfg->bpp); | |
cfb4f5d1 MD |
1127 | if (error) |
1128 | break; | |
1129 | ||
1130 | info->fix = sh_mobile_lcdc_fix; | |
6011bdea | 1131 | info->fix.line_length = lcd_cfg->xres * (cfg->bpp / 8); |
9dd38819 | 1132 | info->fix.smem_len = info->fix.line_length * |
6011bdea | 1133 | var->yres_virtual; |
cfb4f5d1 MD |
1134 | |
1135 | buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, | |
01ac25b5 | 1136 | &ch->dma_handle, GFP_KERNEL); |
cfb4f5d1 MD |
1137 | if (!buf) { |
1138 | dev_err(&pdev->dev, "unable to allocate buffer\n"); | |
1139 | error = -ENOMEM; | |
1140 | break; | |
1141 | } | |
1142 | ||
01ac25b5 | 1143 | info->pseudo_palette = &ch->pseudo_palette; |
cfb4f5d1 MD |
1144 | info->flags = FBINFO_FLAG_DEFAULT; |
1145 | ||
1146 | error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); | |
1147 | if (error < 0) { | |
1148 | dev_err(&pdev->dev, "unable to allocate cmap\n"); | |
1149 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
01ac25b5 | 1150 | buf, ch->dma_handle); |
cfb4f5d1 MD |
1151 | break; |
1152 | } | |
1153 | ||
01ac25b5 | 1154 | info->fix.smem_start = ch->dma_handle; |
cfb4f5d1 MD |
1155 | info->screen_base = buf; |
1156 | info->device = &pdev->dev; | |
01ac25b5 | 1157 | info->par = ch; |
cfb4f5d1 MD |
1158 | } |
1159 | ||
1160 | if (error) | |
1161 | goto err1; | |
1162 | ||
1163 | error = sh_mobile_lcdc_start(priv); | |
1164 | if (error) { | |
1165 | dev_err(&pdev->dev, "unable to start hardware\n"); | |
1166 | goto err1; | |
1167 | } | |
1168 | ||
1169 | for (i = 0; i < j; i++) { | |
1c6a307a PM |
1170 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
1171 | ||
e33afddc | 1172 | info = ch->info; |
1c6a307a PM |
1173 | |
1174 | if (info->fbdefio) { | |
8bed9055 | 1175 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
1c6a307a | 1176 | info->fix.smem_len >> PAGE_SHIFT); |
8bed9055 | 1177 | if (!ch->sglist) { |
1c6a307a PM |
1178 | dev_err(&pdev->dev, "cannot allocate sglist\n"); |
1179 | goto err1; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | error = register_framebuffer(info); | |
cfb4f5d1 MD |
1184 | if (error < 0) |
1185 | goto err1; | |
cfb4f5d1 | 1186 | |
cfb4f5d1 MD |
1187 | dev_info(info->dev, |
1188 | "registered %s/%s as %dx%d %dbpp.\n", | |
1189 | pdev->name, | |
1c6a307a | 1190 | (ch->cfg.chan == LCDC_CHAN_MAINLCD) ? |
cfb4f5d1 | 1191 | "mainlcd" : "sublcd", |
44432407 GL |
1192 | (int) ch->cfg.lcd_cfg[0].xres, |
1193 | (int) ch->cfg.lcd_cfg[0].yres, | |
1c6a307a | 1194 | ch->cfg.bpp); |
8564557a MD |
1195 | |
1196 | /* deferred io mode: disable clock to save power */ | |
6011bdea | 1197 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
8564557a | 1198 | sh_mobile_lcdc_clk_off(priv); |
cfb4f5d1 MD |
1199 | } |
1200 | ||
6011bdea GL |
1201 | /* Failure ignored */ |
1202 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; | |
1203 | fb_register_client(&priv->notifier); | |
1204 | ||
cfb4f5d1 | 1205 | return 0; |
8bed9055 | 1206 | err1: |
cfb4f5d1 | 1207 | sh_mobile_lcdc_remove(pdev); |
8bed9055 | 1208 | |
cfb4f5d1 MD |
1209 | return error; |
1210 | } | |
1211 | ||
1212 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) | |
1213 | { | |
1214 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); | |
1215 | struct fb_info *info; | |
1216 | int i; | |
1217 | ||
6011bdea GL |
1218 | fb_unregister_client(&priv->notifier); |
1219 | ||
cfb4f5d1 | 1220 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) |
8bed9055 | 1221 | if (priv->ch[i].info && priv->ch[i].info->dev) |
e33afddc | 1222 | unregister_framebuffer(priv->ch[i].info); |
cfb4f5d1 MD |
1223 | |
1224 | sh_mobile_lcdc_stop(priv); | |
1225 | ||
1226 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
e33afddc | 1227 | info = priv->ch[i].info; |
cfb4f5d1 | 1228 | |
e33afddc | 1229 | if (!info || !info->device) |
cfb4f5d1 MD |
1230 | continue; |
1231 | ||
1c6a307a PM |
1232 | if (priv->ch[i].sglist) |
1233 | vfree(priv->ch[i].sglist); | |
1234 | ||
cfb4f5d1 MD |
1235 | dma_free_coherent(&pdev->dev, info->fix.smem_len, |
1236 | info->screen_base, priv->ch[i].dma_handle); | |
1237 | fb_dealloc_cmap(&info->cmap); | |
e33afddc | 1238 | framebuffer_release(info); |
cfb4f5d1 MD |
1239 | } |
1240 | ||
b51339ff MD |
1241 | if (priv->dot_clk) |
1242 | clk_put(priv->dot_clk); | |
0246c471 | 1243 | |
8bed9055 GL |
1244 | if (priv->dev) |
1245 | pm_runtime_disable(priv->dev); | |
cfb4f5d1 MD |
1246 | |
1247 | if (priv->base) | |
1248 | iounmap(priv->base); | |
1249 | ||
8564557a MD |
1250 | if (priv->irq) |
1251 | free_irq(priv->irq, priv); | |
cfb4f5d1 MD |
1252 | kfree(priv); |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static struct platform_driver sh_mobile_lcdc_driver = { | |
1257 | .driver = { | |
1258 | .name = "sh_mobile_lcdc_fb", | |
1259 | .owner = THIS_MODULE, | |
2feb075a | 1260 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
cfb4f5d1 MD |
1261 | }, |
1262 | .probe = sh_mobile_lcdc_probe, | |
1263 | .remove = sh_mobile_lcdc_remove, | |
1264 | }; | |
1265 | ||
1266 | static int __init sh_mobile_lcdc_init(void) | |
1267 | { | |
1268 | return platform_driver_register(&sh_mobile_lcdc_driver); | |
1269 | } | |
1270 | ||
1271 | static void __exit sh_mobile_lcdc_exit(void) | |
1272 | { | |
1273 | platform_driver_unregister(&sh_mobile_lcdc_driver); | |
1274 | } | |
1275 | ||
1276 | module_init(sh_mobile_lcdc_init); | |
1277 | module_exit(sh_mobile_lcdc_exit); | |
1278 | ||
1279 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); | |
1280 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); | |
1281 | MODULE_LICENSE("GPL v2"); |