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> |
3b0fd9d7 AC |
24 | #include <linux/backlight.h> |
25 | #include <linux/gpio.h> | |
225c9a8d | 26 | #include <video/sh_mobile_lcdc.h> |
60063497 | 27 | #include <linux/atomic.h> |
cfb4f5d1 | 28 | |
6de9edd5 | 29 | #include "sh_mobile_lcdcfb.h" |
7caa4342 | 30 | #include "sh_mobile_meram.h" |
6de9edd5 | 31 | |
a6f15ade PE |
32 | #define SIDE_B_OFFSET 0x1000 |
33 | #define MIRROR_OFFSET 0x2000 | |
cfb4f5d1 | 34 | |
0246c471 MD |
35 | /* shared registers and their order for context save/restore */ |
36 | static int lcdc_shared_regs[] = { | |
37 | _LDDCKR, | |
38 | _LDDCKSTPR, | |
39 | _LDINTR, | |
40 | _LDDDSR, | |
41 | _LDCNT1R, | |
42 | _LDCNT2R, | |
43 | }; | |
44 | #define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs) | |
45 | ||
d2ecbab5 GL |
46 | #define MAX_XRES 1920 |
47 | #define MAX_YRES 1080 | |
cfb4f5d1 | 48 | |
0246c471 | 49 | static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
50 | [LDDCKPAT1R] = 0x400, |
51 | [LDDCKPAT2R] = 0x404, | |
52 | [LDMT1R] = 0x418, | |
53 | [LDMT2R] = 0x41c, | |
54 | [LDMT3R] = 0x420, | |
55 | [LDDFR] = 0x424, | |
56 | [LDSM1R] = 0x428, | |
8564557a | 57 | [LDSM2R] = 0x42c, |
cfb4f5d1 | 58 | [LDSA1R] = 0x430, |
53b50314 | 59 | [LDSA2R] = 0x434, |
cfb4f5d1 MD |
60 | [LDMLSR] = 0x438, |
61 | [LDHCNR] = 0x448, | |
62 | [LDHSYNR] = 0x44c, | |
63 | [LDVLNR] = 0x450, | |
64 | [LDVSYNR] = 0x454, | |
65 | [LDPMR] = 0x460, | |
6011bdea | 66 | [LDHAJR] = 0x4a0, |
cfb4f5d1 MD |
67 | }; |
68 | ||
0246c471 | 69 | static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { |
cfb4f5d1 MD |
70 | [LDDCKPAT1R] = 0x408, |
71 | [LDDCKPAT2R] = 0x40c, | |
72 | [LDMT1R] = 0x600, | |
73 | [LDMT2R] = 0x604, | |
74 | [LDMT3R] = 0x608, | |
75 | [LDDFR] = 0x60c, | |
76 | [LDSM1R] = 0x610, | |
8564557a | 77 | [LDSM2R] = 0x614, |
cfb4f5d1 MD |
78 | [LDSA1R] = 0x618, |
79 | [LDMLSR] = 0x620, | |
80 | [LDHCNR] = 0x624, | |
81 | [LDHSYNR] = 0x628, | |
82 | [LDVLNR] = 0x62c, | |
83 | [LDVSYNR] = 0x630, | |
84 | [LDPMR] = 0x63c, | |
85 | }; | |
86 | ||
c44f9f76 GL |
87 | static const struct fb_videomode default_720p = { |
88 | .name = "HDMI 720p", | |
89 | .xres = 1280, | |
90 | .yres = 720, | |
91 | ||
5ae0cf82 GL |
92 | .left_margin = 220, |
93 | .right_margin = 110, | |
94 | .hsync_len = 40, | |
c44f9f76 GL |
95 | |
96 | .upper_margin = 20, | |
97 | .lower_margin = 5, | |
98 | .vsync_len = 5, | |
99 | ||
100 | .pixclock = 13468, | |
5ae0cf82 | 101 | .refresh = 60, |
c44f9f76 | 102 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, |
0246c471 MD |
103 | }; |
104 | ||
105 | struct sh_mobile_lcdc_priv { | |
106 | void __iomem *base; | |
107 | int irq; | |
108 | atomic_t hw_usecnt; | |
109 | struct device *dev; | |
110 | struct clk *dot_clk; | |
111 | unsigned long lddckr; | |
112 | struct sh_mobile_lcdc_chan ch[2]; | |
6011bdea | 113 | struct notifier_block notifier; |
0246c471 MD |
114 | unsigned long saved_shared_regs[NR_SHARED_REGS]; |
115 | int started; | |
417d4827 | 116 | int forced_bpp; /* 2 channel LCDC must share bpp setting */ |
7caa4342 | 117 | struct sh_mobile_meram_info *meram_dev; |
0246c471 MD |
118 | }; |
119 | ||
a6f15ade PE |
120 | static bool banked(int reg_nr) |
121 | { | |
122 | switch (reg_nr) { | |
123 | case LDMT1R: | |
124 | case LDMT2R: | |
125 | case LDMT3R: | |
126 | case LDDFR: | |
127 | case LDSM1R: | |
128 | case LDSA1R: | |
53b50314 | 129 | case LDSA2R: |
a6f15ade PE |
130 | case LDMLSR: |
131 | case LDHCNR: | |
132 | case LDHSYNR: | |
133 | case LDVLNR: | |
134 | case LDVSYNR: | |
135 | return true; | |
136 | } | |
137 | return false; | |
138 | } | |
139 | ||
cfb4f5d1 MD |
140 | static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, |
141 | int reg_nr, unsigned long data) | |
142 | { | |
143 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); | |
a6f15ade PE |
144 | if (banked(reg_nr)) |
145 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
146 | SIDE_B_OFFSET); | |
147 | } | |
148 | ||
149 | static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, | |
150 | int reg_nr, unsigned long data) | |
151 | { | |
152 | iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + | |
153 | MIRROR_OFFSET); | |
cfb4f5d1 MD |
154 | } |
155 | ||
156 | static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, | |
157 | int reg_nr) | |
158 | { | |
159 | return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); | |
160 | } | |
161 | ||
162 | static void lcdc_write(struct sh_mobile_lcdc_priv *priv, | |
163 | unsigned long reg_offs, unsigned long data) | |
164 | { | |
165 | iowrite32(data, priv->base + reg_offs); | |
166 | } | |
167 | ||
168 | static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, | |
169 | unsigned long reg_offs) | |
170 | { | |
171 | return ioread32(priv->base + reg_offs); | |
172 | } | |
173 | ||
174 | static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, | |
175 | unsigned long reg_offs, | |
176 | unsigned long mask, unsigned long until) | |
177 | { | |
178 | while ((lcdc_read(priv, reg_offs) & mask) != until) | |
179 | cpu_relax(); | |
180 | } | |
181 | ||
182 | static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) | |
183 | { | |
184 | return chan->cfg.chan == LCDC_CHAN_SUBLCD; | |
185 | } | |
186 | ||
187 | static void lcdc_sys_write_index(void *handle, unsigned long data) | |
188 | { | |
189 | struct sh_mobile_lcdc_chan *ch = handle; | |
190 | ||
ce1c0b08 LP |
191 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT); |
192 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
193 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | | |
194 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
195 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
cfb4f5d1 MD |
196 | } |
197 | ||
198 | static void lcdc_sys_write_data(void *handle, unsigned long data) | |
199 | { | |
200 | struct sh_mobile_lcdc_chan *ch = handle; | |
201 | ||
ce1c0b08 LP |
202 | lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW); |
203 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
204 | lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | | |
205 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
206 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
cfb4f5d1 MD |
207 | } |
208 | ||
209 | static unsigned long lcdc_sys_read_data(void *handle) | |
210 | { | |
211 | struct sh_mobile_lcdc_chan *ch = handle; | |
212 | ||
ce1c0b08 LP |
213 | lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR); |
214 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); | |
215 | lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA | | |
216 | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); | |
cfb4f5d1 | 217 | udelay(1); |
ce1c0b08 | 218 | lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); |
cfb4f5d1 | 219 | |
ce1c0b08 | 220 | return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK; |
cfb4f5d1 MD |
221 | } |
222 | ||
223 | struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { | |
224 | lcdc_sys_write_index, | |
225 | lcdc_sys_write_data, | |
226 | lcdc_sys_read_data, | |
227 | }; | |
228 | ||
8564557a MD |
229 | static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) |
230 | { | |
0246c471 | 231 | if (atomic_inc_and_test(&priv->hw_usecnt)) { |
8564557a MD |
232 | if (priv->dot_clk) |
233 | clk_enable(priv->dot_clk); | |
f1ad90da | 234 | pm_runtime_get_sync(priv->dev); |
ec19b9e0 DHG |
235 | if (priv->meram_dev && priv->meram_dev->pdev) |
236 | pm_runtime_get_sync(&priv->meram_dev->pdev->dev); | |
8564557a MD |
237 | } |
238 | } | |
239 | ||
240 | static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) | |
241 | { | |
0246c471 | 242 | if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { |
ec19b9e0 DHG |
243 | if (priv->meram_dev && priv->meram_dev->pdev) |
244 | pm_runtime_put_sync(&priv->meram_dev->pdev->dev); | |
0246c471 | 245 | pm_runtime_put(priv->dev); |
f1ad90da LP |
246 | if (priv->dot_clk) |
247 | clk_disable(priv->dot_clk); | |
8564557a MD |
248 | } |
249 | } | |
8564557a | 250 | |
1c6a307a PM |
251 | static int sh_mobile_lcdc_sginit(struct fb_info *info, |
252 | struct list_head *pagelist) | |
253 | { | |
254 | struct sh_mobile_lcdc_chan *ch = info->par; | |
255 | unsigned int nr_pages_max = info->fix.smem_len >> PAGE_SHIFT; | |
256 | struct page *page; | |
257 | int nr_pages = 0; | |
258 | ||
259 | sg_init_table(ch->sglist, nr_pages_max); | |
260 | ||
261 | list_for_each_entry(page, pagelist, lru) | |
262 | sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); | |
263 | ||
264 | return nr_pages; | |
265 | } | |
266 | ||
8564557a MD |
267 | static void sh_mobile_lcdc_deferred_io(struct fb_info *info, |
268 | struct list_head *pagelist) | |
269 | { | |
270 | struct sh_mobile_lcdc_chan *ch = info->par; | |
ef61aae4 | 271 | struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg; |
8564557a MD |
272 | |
273 | /* enable clocks before accessing hardware */ | |
274 | sh_mobile_lcdc_clk_on(ch->lcdc); | |
275 | ||
5c1a56b5 PM |
276 | /* |
277 | * It's possible to get here without anything on the pagelist via | |
278 | * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() | |
279 | * invocation. In the former case, the acceleration routines are | |
280 | * stepped in to when using the framebuffer console causing the | |
281 | * workqueue to be scheduled without any dirty pages on the list. | |
282 | * | |
283 | * Despite this, a panel update is still needed given that the | |
284 | * acceleration routines have their own methods for writing in | |
285 | * that still need to be updated. | |
286 | * | |
287 | * The fsync() and empty pagelist case could be optimized for, | |
288 | * but we don't bother, as any application exhibiting such | |
289 | * behaviour is fundamentally broken anyways. | |
290 | */ | |
291 | if (!list_empty(pagelist)) { | |
292 | unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); | |
293 | ||
294 | /* trigger panel update */ | |
295 | dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); | |
ef61aae4 MD |
296 | if (bcfg->start_transfer) |
297 | bcfg->start_transfer(bcfg->board_data, ch, | |
298 | &sh_mobile_lcdc_sys_bus_ops); | |
ce1c0b08 | 299 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
5c1a56b5 | 300 | dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); |
ef61aae4 MD |
301 | } else { |
302 | if (bcfg->start_transfer) | |
303 | bcfg->start_transfer(bcfg->board_data, ch, | |
304 | &sh_mobile_lcdc_sys_bus_ops); | |
ce1c0b08 | 305 | lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); |
ef61aae4 | 306 | } |
8564557a MD |
307 | } |
308 | ||
309 | static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) | |
310 | { | |
311 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
312 | ||
313 | if (fbdefio) | |
314 | schedule_delayed_work(&info->deferred_work, fbdefio->delay); | |
315 | } | |
316 | ||
317 | static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) | |
318 | { | |
319 | struct sh_mobile_lcdc_priv *priv = data; | |
2feb075a | 320 | struct sh_mobile_lcdc_chan *ch; |
9dd38819 | 321 | unsigned long ldintr; |
2feb075a MD |
322 | int is_sub; |
323 | int k; | |
8564557a | 324 | |
dc48665f LP |
325 | /* Acknowledge interrupts and disable further VSYNC End IRQs. */ |
326 | ldintr = lcdc_read(priv, _LDINTR); | |
327 | lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE); | |
8564557a | 328 | |
2feb075a | 329 | /* figure out if this interrupt is for main or sub lcd */ |
ce1c0b08 | 330 | is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0; |
2feb075a | 331 | |
9dd38819 | 332 | /* wake up channel and disable clocks */ |
2feb075a MD |
333 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
334 | ch = &priv->ch[k]; | |
335 | ||
336 | if (!ch->enabled) | |
337 | continue; | |
338 | ||
dc48665f | 339 | /* Frame End */ |
9dd38819 PE |
340 | if (ldintr & LDINTR_FS) { |
341 | if (is_sub == lcdc_chan_is_sublcd(ch)) { | |
342 | ch->frame_end = 1; | |
343 | wake_up(&ch->frame_end_wait); | |
2feb075a | 344 | |
9dd38819 PE |
345 | sh_mobile_lcdc_clk_off(priv); |
346 | } | |
347 | } | |
348 | ||
349 | /* VSYNC End */ | |
40331b21 PE |
350 | if (ldintr & LDINTR_VES) |
351 | complete(&ch->vsync_completion); | |
2feb075a MD |
352 | } |
353 | ||
8564557a MD |
354 | return IRQ_HANDLED; |
355 | } | |
356 | ||
cfb4f5d1 MD |
357 | static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, |
358 | int start) | |
359 | { | |
360 | unsigned long tmp = lcdc_read(priv, _LDCNT2R); | |
361 | int k; | |
362 | ||
363 | /* start or stop the lcdc */ | |
364 | if (start) | |
ce1c0b08 | 365 | lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO); |
cfb4f5d1 | 366 | else |
ce1c0b08 | 367 | lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO); |
cfb4f5d1 MD |
368 | |
369 | /* wait until power is applied/stopped on all channels */ | |
370 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
371 | if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) | |
372 | while (1) { | |
ce1c0b08 LP |
373 | tmp = lcdc_read_chan(&priv->ch[k], LDPMR) |
374 | & LDPMR_LPS; | |
375 | if (start && tmp == LDPMR_LPS) | |
cfb4f5d1 MD |
376 | break; |
377 | if (!start && tmp == 0) | |
378 | break; | |
379 | cpu_relax(); | |
380 | } | |
381 | ||
382 | if (!start) | |
383 | lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ | |
384 | } | |
385 | ||
6011bdea GL |
386 | static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) |
387 | { | |
1c120deb GL |
388 | struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var; |
389 | unsigned long h_total, hsync_pos, display_h_total; | |
6011bdea GL |
390 | u32 tmp; |
391 | ||
392 | tmp = ch->ldmt1r_value; | |
ce1c0b08 LP |
393 | tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL; |
394 | tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL; | |
395 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0; | |
396 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0; | |
397 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0; | |
398 | tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0; | |
399 | tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0; | |
6011bdea GL |
400 | lcdc_write_chan(ch, LDMT1R, tmp); |
401 | ||
402 | /* setup SYS bus */ | |
403 | lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); | |
404 | lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); | |
405 | ||
406 | /* horizontal configuration */ | |
1c120deb GL |
407 | h_total = display_var->xres + display_var->hsync_len + |
408 | display_var->left_margin + display_var->right_margin; | |
6011bdea | 409 | tmp = h_total / 8; /* HTCN */ |
1c120deb | 410 | tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */ |
6011bdea GL |
411 | lcdc_write_chan(ch, LDHCNR, tmp); |
412 | ||
1c120deb | 413 | hsync_pos = display_var->xres + display_var->right_margin; |
6011bdea | 414 | tmp = hsync_pos / 8; /* HSYNP */ |
1c120deb | 415 | tmp |= (display_var->hsync_len / 8) << 16; /* HSYNW */ |
6011bdea GL |
416 | lcdc_write_chan(ch, LDHSYNR, tmp); |
417 | ||
418 | /* vertical configuration */ | |
1c120deb GL |
419 | tmp = display_var->yres + display_var->vsync_len + |
420 | display_var->upper_margin + display_var->lower_margin; /* VTLN */ | |
421 | tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */ | |
6011bdea GL |
422 | lcdc_write_chan(ch, LDVLNR, tmp); |
423 | ||
1c120deb GL |
424 | tmp = display_var->yres + display_var->lower_margin; /* VSYNP */ |
425 | tmp |= display_var->vsync_len << 16; /* VSYNW */ | |
6011bdea GL |
426 | lcdc_write_chan(ch, LDVSYNR, tmp); |
427 | ||
428 | /* Adjust horizontal synchronisation for HDMI */ | |
1c120deb GL |
429 | display_h_total = display_var->xres + display_var->hsync_len + |
430 | display_var->left_margin + display_var->right_margin; | |
431 | tmp = ((display_var->xres & 7) << 24) | | |
432 | ((display_h_total & 7) << 16) | | |
433 | ((display_var->hsync_len & 7) << 8) | | |
6011bdea GL |
434 | hsync_pos; |
435 | lcdc_write_chan(ch, LDHAJR, tmp); | |
436 | } | |
437 | ||
9a217e34 LP |
438 | /* |
439 | * __sh_mobile_lcdc_start - Configure and tart the LCDC | |
440 | * @priv: LCDC device | |
441 | * | |
442 | * Configure all enabled channels and start the LCDC device. All external | |
443 | * devices (clocks, MERAM, panels, ...) are not touched by this function. | |
444 | */ | |
445 | static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) | |
cfb4f5d1 MD |
446 | { |
447 | struct sh_mobile_lcdc_chan *ch; | |
cfb4f5d1 | 448 | unsigned long tmp; |
417d4827 | 449 | int bpp = 0; |
9a217e34 | 450 | int k, m; |
8564557a | 451 | |
9a217e34 LP |
452 | /* Enable LCDC channels. Read data from external memory, avoid using the |
453 | * BEU for now. | |
454 | */ | |
455 | lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled); | |
cfb4f5d1 | 456 | |
9a217e34 | 457 | /* Stop the LCDC first and disable all interrupts. */ |
cfb4f5d1 | 458 | sh_mobile_lcdc_start_stop(priv, 0); |
9a217e34 | 459 | lcdc_write(priv, _LDINTR, 0); |
cfb4f5d1 | 460 | |
9a217e34 | 461 | /* Configure power supply, dot clocks and start them. */ |
cfb4f5d1 MD |
462 | tmp = priv->lddckr; |
463 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
464 | ch = &priv->ch[k]; | |
9a217e34 | 465 | if (!ch->enabled) |
cfb4f5d1 MD |
466 | continue; |
467 | ||
9a217e34 LP |
468 | if (!bpp) |
469 | bpp = ch->info->var.bits_per_pixel; | |
470 | ||
471 | /* Power supply */ | |
472 | lcdc_write_chan(ch, LDPMR, 0); | |
473 | ||
cfb4f5d1 MD |
474 | m = ch->cfg.clock_divider; |
475 | if (!m) | |
476 | continue; | |
477 | ||
505c7de5 LP |
478 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider |
479 | * denominator. | |
480 | */ | |
481 | lcdc_write_chan(ch, LDDCKPAT1R, 0); | |
482 | lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); | |
483 | ||
cfb4f5d1 | 484 | if (m == 1) |
ce1c0b08 | 485 | m = LDDCKR_MOSEL; |
cfb4f5d1 | 486 | tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); |
cfb4f5d1 MD |
487 | } |
488 | ||
489 | lcdc_write(priv, _LDDCKR, tmp); | |
cfb4f5d1 MD |
490 | lcdc_write(priv, _LDDCKSTPR, 0); |
491 | lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); | |
492 | ||
9a217e34 | 493 | /* Setup geometry, format, frame buffer memory and operation mode. */ |
cfb4f5d1 MD |
494 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
495 | ch = &priv->ch[k]; | |
cfb4f5d1 MD |
496 | if (!ch->enabled) |
497 | continue; | |
498 | ||
6011bdea | 499 | sh_mobile_lcdc_geometry(ch); |
cfb4f5d1 | 500 | |
53b50314 | 501 | if (ch->info->var.nonstd) { |
9a217e34 | 502 | tmp = (ch->info->var.nonstd << 16); |
53b50314 DHG |
503 | switch (ch->info->var.bits_per_pixel) { |
504 | case 12: | |
9a217e34 | 505 | tmp |= LDDFR_YF_420; |
53b50314 DHG |
506 | break; |
507 | case 16: | |
ce1c0b08 | 508 | tmp |= LDDFR_YF_422; |
53b50314 DHG |
509 | break; |
510 | case 24: | |
9a217e34 | 511 | default: |
ce1c0b08 | 512 | tmp |= LDDFR_YF_444; |
53b50314 DHG |
513 | break; |
514 | } | |
515 | } else { | |
516 | switch (ch->info->var.bits_per_pixel) { | |
517 | case 16: | |
9a217e34 | 518 | tmp = LDDFR_PKF_RGB16; |
53b50314 DHG |
519 | break; |
520 | case 24: | |
9a217e34 | 521 | tmp = LDDFR_PKF_RGB24; |
53b50314 DHG |
522 | break; |
523 | case 32: | |
9a217e34 LP |
524 | default: |
525 | tmp = LDDFR_PKF_ARGB32; | |
53b50314 DHG |
526 | break; |
527 | } | |
417d4827 | 528 | } |
7caa4342 | 529 | |
9a217e34 LP |
530 | lcdc_write_chan(ch, LDDFR, tmp); |
531 | lcdc_write_chan(ch, LDMLSR, ch->pitch); | |
532 | lcdc_write_chan(ch, LDSA1R, ch->base_addr_y); | |
533 | if (ch->info->var.nonstd) | |
534 | lcdc_write_chan(ch, LDSA2R, ch->base_addr_c); | |
7caa4342 | 535 | |
9a217e34 LP |
536 | /* When using deferred I/O mode, configure the LCDC for one-shot |
537 | * operation and enable the frame end interrupt. Otherwise use | |
538 | * continuous read mode. | |
539 | */ | |
540 | if (ch->ldmt1r_value & LDMT1R_IFM && | |
541 | ch->cfg.sys_bus_cfg.deferred_io_msec) { | |
542 | lcdc_write_chan(ch, LDSM1R, LDSM1R_OS); | |
543 | lcdc_write(priv, _LDINTR, LDINTR_FE); | |
544 | } else { | |
545 | lcdc_write_chan(ch, LDSM1R, 0); | |
546 | } | |
547 | } | |
7caa4342 | 548 | |
9a217e34 LP |
549 | /* Word and long word swap. */ |
550 | if (priv->ch[0].info->var.nonstd) | |
551 | tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; | |
552 | else { | |
553 | switch (bpp) { | |
554 | case 16: | |
555 | tmp = LDDDSR_LS | LDDDSR_WS; | |
556 | break; | |
557 | case 24: | |
558 | tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; | |
559 | break; | |
560 | case 32: | |
561 | default: | |
562 | tmp = LDDDSR_LS; | |
563 | break; | |
7caa4342 | 564 | } |
9a217e34 LP |
565 | } |
566 | lcdc_write(priv, _LDDDSR, tmp); | |
7caa4342 | 567 | |
9a217e34 LP |
568 | /* Enable the display output. */ |
569 | lcdc_write(priv, _LDCNT1R, LDCNT1R_DE); | |
570 | sh_mobile_lcdc_start_stop(priv, 1); | |
571 | priv->started = 1; | |
572 | } | |
cfb4f5d1 | 573 | |
9a217e34 LP |
574 | static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) |
575 | { | |
576 | struct sh_mobile_meram_info *mdev = priv->meram_dev; | |
577 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
578 | struct sh_mobile_lcdc_chan *ch; | |
579 | unsigned long tmp; | |
580 | int ret; | |
581 | int k; | |
cfb4f5d1 | 582 | |
9a217e34 LP |
583 | /* enable clocks before accessing the hardware */ |
584 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
585 | if (priv->ch[k].enabled) | |
586 | sh_mobile_lcdc_clk_on(priv); | |
587 | } | |
8564557a | 588 | |
9a217e34 LP |
589 | /* reset */ |
590 | lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR); | |
591 | lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0); | |
8564557a | 592 | |
9a217e34 LP |
593 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
594 | ch = &priv->ch[k]; | |
8564557a | 595 | |
9a217e34 LP |
596 | if (!ch->enabled) |
597 | continue; | |
598 | ||
599 | board_cfg = &ch->cfg.board_cfg; | |
600 | if (board_cfg->setup_sys) { | |
601 | ret = board_cfg->setup_sys(board_cfg->board_data, ch, | |
602 | &sh_mobile_lcdc_sys_bus_ops); | |
603 | if (ret) | |
604 | return ret; | |
8564557a | 605 | } |
cfb4f5d1 MD |
606 | } |
607 | ||
9a217e34 LP |
608 | /* Compute frame buffer base address and pitch for each channel. */ |
609 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { | |
610 | struct sh_mobile_meram_cfg *cfg; | |
611 | int pixelformat; | |
cfb4f5d1 | 612 | |
9a217e34 LP |
613 | ch = &priv->ch[k]; |
614 | if (!ch->enabled) | |
615 | continue; | |
cfb4f5d1 | 616 | |
9a217e34 LP |
617 | ch->base_addr_y = ch->info->fix.smem_start; |
618 | ch->base_addr_c = ch->base_addr_y | |
619 | + ch->info->var.xres | |
620 | * ch->info->var.yres_virtual; | |
621 | ch->pitch = ch->info->fix.line_length; | |
622 | ||
623 | /* Enable MERAM if possible. */ | |
624 | cfg = ch->cfg.meram_cfg; | |
625 | if (mdev == NULL || mdev->ops == NULL || cfg == NULL) | |
626 | continue; | |
627 | ||
628 | /* we need to de-init configured ICBs before we can | |
629 | * re-initialize them. | |
630 | */ | |
631 | if (ch->meram_enabled) { | |
632 | mdev->ops->meram_unregister(mdev, cfg); | |
633 | ch->meram_enabled = 0; | |
634 | } | |
635 | ||
636 | if (!ch->info->var.nonstd) | |
637 | pixelformat = SH_MOBILE_MERAM_PF_RGB; | |
638 | else if (ch->info->var.bits_per_pixel == 24) | |
639 | pixelformat = SH_MOBILE_MERAM_PF_NV24; | |
640 | else | |
641 | pixelformat = SH_MOBILE_MERAM_PF_NV; | |
642 | ||
643 | ret = mdev->ops->meram_register(mdev, cfg, ch->pitch, | |
644 | ch->info->var.yres, pixelformat, | |
645 | ch->base_addr_y, ch->base_addr_c, | |
646 | &ch->base_addr_y, &ch->base_addr_c, | |
647 | &ch->pitch); | |
648 | if (!ret) | |
649 | ch->meram_enabled = 1; | |
650 | } | |
651 | ||
652 | /* Start the LCDC. */ | |
653 | __sh_mobile_lcdc_start(priv); | |
654 | ||
655 | /* Setup deferred I/O, tell the board code to enable the panels, and | |
656 | * turn backlight on. | |
657 | */ | |
cfb4f5d1 MD |
658 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
659 | ch = &priv->ch[k]; | |
21bc1f02 MD |
660 | if (!ch->enabled) |
661 | continue; | |
662 | ||
9a217e34 LP |
663 | tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; |
664 | if (ch->ldmt1r_value & LDMT1R_IFM && tmp) { | |
665 | ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; | |
666 | ch->defio.delay = msecs_to_jiffies(tmp); | |
667 | ch->info->fbdefio = &ch->defio; | |
668 | fb_deferred_io_init(ch->info); | |
669 | } | |
670 | ||
cfb4f5d1 | 671 | board_cfg = &ch->cfg.board_cfg; |
247f9938 | 672 | if (board_cfg->display_on && try_module_get(board_cfg->owner)) { |
c2439398 | 673 | board_cfg->display_on(board_cfg->board_data, ch->info); |
6de9edd5 GL |
674 | module_put(board_cfg->owner); |
675 | } | |
3b0fd9d7 AC |
676 | |
677 | if (ch->bl) { | |
678 | ch->bl->props.power = FB_BLANK_UNBLANK; | |
679 | backlight_update_status(ch->bl); | |
680 | } | |
cfb4f5d1 MD |
681 | } |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) | |
687 | { | |
688 | struct sh_mobile_lcdc_chan *ch; | |
689 | struct sh_mobile_lcdc_board_cfg *board_cfg; | |
690 | int k; | |
691 | ||
2feb075a | 692 | /* clean up deferred io and ask board code to disable panel */ |
cfb4f5d1 MD |
693 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { |
694 | ch = &priv->ch[k]; | |
21bc1f02 MD |
695 | if (!ch->enabled) |
696 | continue; | |
8564557a | 697 | |
2feb075a MD |
698 | /* deferred io mode: |
699 | * flush frame, and wait for frame end interrupt | |
700 | * clean up deferred io and enable clock | |
701 | */ | |
5ef6b505 | 702 | if (ch->info && ch->info->fbdefio) { |
2feb075a | 703 | ch->frame_end = 0; |
e33afddc | 704 | schedule_delayed_work(&ch->info->deferred_work, 0); |
2feb075a | 705 | wait_event(ch->frame_end_wait, ch->frame_end); |
e33afddc PM |
706 | fb_deferred_io_cleanup(ch->info); |
707 | ch->info->fbdefio = NULL; | |
2feb075a | 708 | sh_mobile_lcdc_clk_on(priv); |
8564557a | 709 | } |
2feb075a | 710 | |
3b0fd9d7 AC |
711 | if (ch->bl) { |
712 | ch->bl->props.power = FB_BLANK_POWERDOWN; | |
713 | backlight_update_status(ch->bl); | |
714 | } | |
715 | ||
2feb075a | 716 | board_cfg = &ch->cfg.board_cfg; |
247f9938 | 717 | if (board_cfg->display_off && try_module_get(board_cfg->owner)) { |
2feb075a | 718 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
719 | module_put(board_cfg->owner); |
720 | } | |
7caa4342 D |
721 | |
722 | /* disable the meram */ | |
723 | if (ch->meram_enabled) { | |
724 | struct sh_mobile_meram_cfg *cfg; | |
725 | struct sh_mobile_meram_info *mdev; | |
726 | cfg = ch->cfg.meram_cfg; | |
727 | mdev = priv->meram_dev; | |
728 | mdev->ops->meram_unregister(mdev, cfg); | |
729 | ch->meram_enabled = 0; | |
730 | } | |
731 | ||
cfb4f5d1 MD |
732 | } |
733 | ||
734 | /* stop the lcdc */ | |
8e9bb19e MD |
735 | if (priv->started) { |
736 | sh_mobile_lcdc_start_stop(priv, 0); | |
737 | priv->started = 0; | |
738 | } | |
b51339ff | 739 | |
8564557a MD |
740 | /* stop clocks */ |
741 | for (k = 0; k < ARRAY_SIZE(priv->ch); k++) | |
742 | if (priv->ch[k].enabled) | |
743 | sh_mobile_lcdc_clk_off(priv); | |
cfb4f5d1 MD |
744 | } |
745 | ||
746 | static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) | |
747 | { | |
ce1c0b08 LP |
748 | int interface_type = ch->cfg.interface_type; |
749 | ||
750 | switch (interface_type) { | |
751 | case RGB8: | |
752 | case RGB9: | |
753 | case RGB12A: | |
754 | case RGB12B: | |
755 | case RGB16: | |
756 | case RGB18: | |
757 | case RGB24: | |
758 | case SYS8A: | |
759 | case SYS8B: | |
760 | case SYS8C: | |
761 | case SYS8D: | |
762 | case SYS9: | |
763 | case SYS12: | |
764 | case SYS16A: | |
765 | case SYS16B: | |
766 | case SYS16C: | |
767 | case SYS18: | |
768 | case SYS24: | |
769 | break; | |
770 | default: | |
771 | return -EINVAL; | |
cfb4f5d1 MD |
772 | } |
773 | ||
774 | /* SUBLCD only supports SYS interface */ | |
775 | if (lcdc_chan_is_sublcd(ch)) { | |
ce1c0b08 LP |
776 | if (!(interface_type & LDMT1R_IFM)) |
777 | return -EINVAL; | |
778 | ||
779 | interface_type &= ~LDMT1R_IFM; | |
cfb4f5d1 MD |
780 | } |
781 | ||
ce1c0b08 | 782 | ch->ldmt1r_value = interface_type; |
cfb4f5d1 | 783 | return 0; |
cfb4f5d1 MD |
784 | } |
785 | ||
b51339ff MD |
786 | static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev, |
787 | int clock_source, | |
cfb4f5d1 MD |
788 | struct sh_mobile_lcdc_priv *priv) |
789 | { | |
790 | char *str; | |
cfb4f5d1 MD |
791 | |
792 | switch (clock_source) { | |
ce1c0b08 LP |
793 | case LCDC_CLK_BUS: |
794 | str = "bus_clk"; | |
795 | priv->lddckr = LDDCKR_ICKSEL_BUS; | |
796 | break; | |
797 | case LCDC_CLK_PERIPHERAL: | |
798 | str = "peripheral_clk"; | |
799 | priv->lddckr = LDDCKR_ICKSEL_MIPI; | |
800 | break; | |
801 | case LCDC_CLK_EXTERNAL: | |
802 | str = NULL; | |
803 | priv->lddckr = LDDCKR_ICKSEL_HDMI; | |
804 | break; | |
cfb4f5d1 MD |
805 | default: |
806 | return -EINVAL; | |
807 | } | |
808 | ||
cfb4f5d1 | 809 | if (str) { |
b51339ff MD |
810 | priv->dot_clk = clk_get(&pdev->dev, str); |
811 | if (IS_ERR(priv->dot_clk)) { | |
812 | dev_err(&pdev->dev, "cannot get dot clock %s\n", str); | |
b51339ff | 813 | return PTR_ERR(priv->dot_clk); |
cfb4f5d1 | 814 | } |
cfb4f5d1 | 815 | } |
0246c471 MD |
816 | |
817 | /* Runtime PM support involves two step for this driver: | |
818 | * 1) Enable Runtime PM | |
819 | * 2) Force Runtime PM Resume since hardware is accessed from probe() | |
820 | */ | |
8bed9055 | 821 | priv->dev = &pdev->dev; |
0246c471 MD |
822 | pm_runtime_enable(priv->dev); |
823 | pm_runtime_resume(priv->dev); | |
cfb4f5d1 MD |
824 | return 0; |
825 | } | |
826 | ||
827 | static int sh_mobile_lcdc_setcolreg(u_int regno, | |
828 | u_int red, u_int green, u_int blue, | |
829 | u_int transp, struct fb_info *info) | |
830 | { | |
831 | u32 *palette = info->pseudo_palette; | |
832 | ||
833 | if (regno >= PALETTE_NR) | |
834 | return -EINVAL; | |
835 | ||
836 | /* only FB_VISUAL_TRUECOLOR supported */ | |
837 | ||
838 | red >>= 16 - info->var.red.length; | |
839 | green >>= 16 - info->var.green.length; | |
840 | blue >>= 16 - info->var.blue.length; | |
841 | transp >>= 16 - info->var.transp.length; | |
842 | ||
843 | palette[regno] = (red << info->var.red.offset) | | |
844 | (green << info->var.green.offset) | | |
845 | (blue << info->var.blue.offset) | | |
846 | (transp << info->var.transp.offset); | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { | |
852 | .id = "SH Mobile LCDC", | |
853 | .type = FB_TYPE_PACKED_PIXELS, | |
854 | .visual = FB_VISUAL_TRUECOLOR, | |
855 | .accel = FB_ACCEL_NONE, | |
9dd38819 PE |
856 | .xpanstep = 0, |
857 | .ypanstep = 1, | |
858 | .ywrapstep = 0, | |
cfb4f5d1 MD |
859 | }; |
860 | ||
8564557a MD |
861 | static void sh_mobile_lcdc_fillrect(struct fb_info *info, |
862 | const struct fb_fillrect *rect) | |
863 | { | |
864 | sys_fillrect(info, rect); | |
865 | sh_mobile_lcdc_deferred_io_touch(info); | |
866 | } | |
867 | ||
868 | static void sh_mobile_lcdc_copyarea(struct fb_info *info, | |
869 | const struct fb_copyarea *area) | |
870 | { | |
871 | sys_copyarea(info, area); | |
872 | sh_mobile_lcdc_deferred_io_touch(info); | |
873 | } | |
874 | ||
875 | static void sh_mobile_lcdc_imageblit(struct fb_info *info, | |
876 | const struct fb_image *image) | |
877 | { | |
878 | sys_imageblit(info, image); | |
879 | sh_mobile_lcdc_deferred_io_touch(info); | |
880 | } | |
881 | ||
9dd38819 PE |
882 | static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, |
883 | struct fb_info *info) | |
884 | { | |
885 | struct sh_mobile_lcdc_chan *ch = info->par; | |
92e1f9a7 PE |
886 | struct sh_mobile_lcdc_priv *priv = ch->lcdc; |
887 | unsigned long ldrcntr; | |
888 | unsigned long new_pan_offset; | |
53b50314 DHG |
889 | unsigned long base_addr_y, base_addr_c; |
890 | unsigned long c_offset; | |
92e1f9a7 | 891 | |
53b50314 DHG |
892 | if (!var->nonstd) |
893 | new_pan_offset = (var->yoffset * info->fix.line_length) + | |
894 | (var->xoffset * (info->var.bits_per_pixel / 8)); | |
895 | else | |
896 | new_pan_offset = (var->yoffset * info->fix.line_length) + | |
897 | (var->xoffset); | |
9dd38819 | 898 | |
92e1f9a7 | 899 | if (new_pan_offset == ch->pan_offset) |
9dd38819 PE |
900 | return 0; /* No change, do nothing */ |
901 | ||
92e1f9a7 | 902 | ldrcntr = lcdc_read(priv, _LDRCNTR); |
9dd38819 | 903 | |
92e1f9a7 | 904 | /* Set the source address for the next refresh */ |
53b50314 DHG |
905 | base_addr_y = ch->dma_handle + new_pan_offset; |
906 | if (var->nonstd) { | |
907 | /* Set y offset */ | |
908 | c_offset = (var->yoffset * | |
909 | info->fix.line_length * | |
910 | (info->var.bits_per_pixel - 8)) / 8; | |
911 | base_addr_c = ch->dma_handle + var->xres * var->yres_virtual + | |
912 | c_offset; | |
913 | /* Set x offset */ | |
914 | if (info->var.bits_per_pixel == 24) | |
915 | base_addr_c += 2 * var->xoffset; | |
916 | else | |
917 | base_addr_c += var->xoffset; | |
49d79ba2 | 918 | } |
53b50314 | 919 | |
49d79ba2 | 920 | if (ch->meram_enabled) { |
7caa4342 D |
921 | struct sh_mobile_meram_cfg *cfg; |
922 | struct sh_mobile_meram_info *mdev; | |
7caa4342 D |
923 | int ret; |
924 | ||
925 | cfg = ch->cfg.meram_cfg; | |
926 | mdev = priv->meram_dev; | |
927 | ret = mdev->ops->meram_update(mdev, cfg, | |
928 | base_addr_y, base_addr_c, | |
49d79ba2 | 929 | &base_addr_y, &base_addr_c); |
7caa4342 D |
930 | if (ret) |
931 | return ret; | |
49d79ba2 | 932 | } |
7caa4342 | 933 | |
49d79ba2 LP |
934 | ch->base_addr_y = base_addr_y; |
935 | ch->base_addr_c = base_addr_c; | |
7caa4342 | 936 | |
49d79ba2 LP |
937 | lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); |
938 | if (var->nonstd) | |
939 | lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); | |
53b50314 | 940 | |
92e1f9a7 PE |
941 | if (lcdc_chan_is_sublcd(ch)) |
942 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); | |
943 | else | |
944 | lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); | |
945 | ||
946 | ch->pan_offset = new_pan_offset; | |
947 | ||
948 | sh_mobile_lcdc_deferred_io_touch(info); | |
9dd38819 PE |
949 | |
950 | return 0; | |
951 | } | |
952 | ||
40331b21 PE |
953 | static int sh_mobile_wait_for_vsync(struct fb_info *info) |
954 | { | |
955 | struct sh_mobile_lcdc_chan *ch = info->par; | |
956 | unsigned long ldintr; | |
957 | int ret; | |
958 | ||
dc48665f LP |
959 | /* Enable VSync End interrupt and be careful not to acknowledge any |
960 | * pending interrupt. | |
961 | */ | |
40331b21 | 962 | ldintr = lcdc_read(ch->lcdc, _LDINTR); |
dc48665f | 963 | ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK; |
40331b21 PE |
964 | lcdc_write(ch->lcdc, _LDINTR, ldintr); |
965 | ||
966 | ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, | |
967 | msecs_to_jiffies(100)); | |
968 | if (!ret) | |
969 | return -ETIMEDOUT; | |
970 | ||
971 | return 0; | |
972 | } | |
973 | ||
974 | static int sh_mobile_ioctl(struct fb_info *info, unsigned int cmd, | |
975 | unsigned long arg) | |
976 | { | |
977 | int retval; | |
978 | ||
979 | switch (cmd) { | |
980 | case FBIO_WAITFORVSYNC: | |
981 | retval = sh_mobile_wait_for_vsync(info); | |
982 | break; | |
983 | ||
984 | default: | |
985 | retval = -ENOIOCTLCMD; | |
986 | break; | |
987 | } | |
988 | return retval; | |
989 | } | |
990 | ||
dd210503 GL |
991 | static void sh_mobile_fb_reconfig(struct fb_info *info) |
992 | { | |
993 | struct sh_mobile_lcdc_chan *ch = info->par; | |
994 | struct fb_videomode mode1, mode2; | |
995 | struct fb_event event; | |
996 | int evnt = FB_EVENT_MODE_CHANGE_ALL; | |
997 | ||
998 | if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) | |
999 | /* More framebuffer users are active */ | |
1000 | return; | |
1001 | ||
1002 | fb_var_to_videomode(&mode1, &ch->display_var); | |
1003 | fb_var_to_videomode(&mode2, &info->var); | |
1004 | ||
1005 | if (fb_mode_is_equal(&mode1, &mode2)) | |
1006 | return; | |
1007 | ||
1008 | /* Display has been re-plugged, framebuffer is free now, reconfigure */ | |
1009 | if (fb_set_var(info, &ch->display_var) < 0) | |
1010 | /* Couldn't reconfigure, hopefully, can continue as before */ | |
1011 | return; | |
1012 | ||
53b50314 DHG |
1013 | if (info->var.nonstd) |
1014 | info->fix.line_length = mode1.xres; | |
1015 | else | |
1016 | info->fix.line_length = mode1.xres * (ch->cfg.bpp / 8); | |
dd210503 GL |
1017 | |
1018 | /* | |
1019 | * fb_set_var() calls the notifier change internally, only if | |
1020 | * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a | |
1021 | * user event, we have to call the chain ourselves. | |
1022 | */ | |
1023 | event.info = info; | |
cc267ec5 | 1024 | event.data = &mode1; |
dd210503 GL |
1025 | fb_notifier_call_chain(evnt, &event); |
1026 | } | |
1027 | ||
1028 | /* | |
1029 | * Locking: both .fb_release() and .fb_open() are called with info->lock held if | |
1030 | * user == 1, or with console sem held, if user == 0. | |
1031 | */ | |
1032 | static int sh_mobile_release(struct fb_info *info, int user) | |
1033 | { | |
1034 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1035 | ||
1036 | mutex_lock(&ch->open_lock); | |
1037 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
1038 | ||
1039 | ch->use_count--; | |
1040 | ||
1041 | /* Nothing to reconfigure, when called from fbcon */ | |
1042 | if (user) { | |
ac751efa | 1043 | console_lock(); |
dd210503 | 1044 | sh_mobile_fb_reconfig(info); |
ac751efa | 1045 | console_unlock(); |
dd210503 GL |
1046 | } |
1047 | ||
1048 | mutex_unlock(&ch->open_lock); | |
1049 | ||
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | static int sh_mobile_open(struct fb_info *info, int user) | |
1054 | { | |
1055 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1056 | ||
1057 | mutex_lock(&ch->open_lock); | |
1058 | ch->use_count++; | |
1059 | ||
1060 | dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); | |
1061 | mutex_unlock(&ch->open_lock); | |
1062 | ||
1063 | return 0; | |
1064 | } | |
1065 | ||
1066 | static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
1067 | { | |
1068 | struct sh_mobile_lcdc_chan *ch = info->par; | |
417d4827 | 1069 | struct sh_mobile_lcdc_priv *p = ch->lcdc; |
dd210503 | 1070 | |
d2ecbab5 | 1071 | if (var->xres > MAX_XRES || var->yres > MAX_YRES || |
dd210503 | 1072 | var->xres * var->yres * (ch->cfg.bpp / 8) * 2 > info->fix.smem_len) { |
830539d1 | 1073 | dev_warn(info->dev, "Invalid info: %u-%u-%u-%u x %u-%u-%u-%u @ %lukHz!\n", |
d2ecbab5 GL |
1074 | var->left_margin, var->xres, var->right_margin, var->hsync_len, |
1075 | var->upper_margin, var->yres, var->lower_margin, var->vsync_len, | |
1076 | PICOS2KHZ(var->pixclock)); | |
dd210503 GL |
1077 | return -EINVAL; |
1078 | } | |
417d4827 MD |
1079 | |
1080 | /* only accept the forced_bpp for dual channel configurations */ | |
1081 | if (p->forced_bpp && p->forced_bpp != var->bits_per_pixel) | |
1082 | return -EINVAL; | |
1083 | ||
1084 | switch (var->bits_per_pixel) { | |
1085 | case 16: /* PKF[4:0] = 00011 - RGB 565 */ | |
1086 | case 24: /* PKF[4:0] = 01011 - RGB 888 */ | |
1087 | case 32: /* PKF[4:0] = 00000 - RGBA 888 */ | |
1088 | break; | |
1089 | default: | |
1090 | return -EINVAL; | |
1091 | } | |
1092 | ||
dd210503 GL |
1093 | return 0; |
1094 | } | |
40331b21 | 1095 | |
8857b9aa AC |
1096 | /* |
1097 | * Screen blanking. Behavior is as follows: | |
1098 | * FB_BLANK_UNBLANK: screen unblanked, clocks enabled | |
1099 | * FB_BLANK_NORMAL: screen blanked, clocks enabled | |
1100 | * FB_BLANK_VSYNC, | |
1101 | * FB_BLANK_HSYNC, | |
1102 | * FB_BLANK_POWEROFF: screen blanked, clocks disabled | |
1103 | */ | |
1104 | static int sh_mobile_lcdc_blank(int blank, struct fb_info *info) | |
1105 | { | |
1106 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1107 | struct sh_mobile_lcdc_priv *p = ch->lcdc; | |
1108 | ||
1109 | /* blank the screen? */ | |
1110 | if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) { | |
1111 | struct fb_fillrect rect = { | |
1112 | .width = info->var.xres, | |
1113 | .height = info->var.yres, | |
1114 | }; | |
1115 | sh_mobile_lcdc_fillrect(info, &rect); | |
1116 | } | |
1117 | /* turn clocks on? */ | |
1118 | if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) { | |
1119 | sh_mobile_lcdc_clk_on(p); | |
1120 | } | |
1121 | /* turn clocks off? */ | |
1122 | if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) { | |
1123 | /* make sure the screen is updated with the black fill before | |
1124 | * switching the clocks off. one vsync is not enough since | |
1125 | * blanking may occur in the middle of a refresh. deferred io | |
1126 | * mode will reenable the clocks and update the screen in time, | |
1127 | * so it does not need this. */ | |
1128 | if (!info->fbdefio) { | |
1129 | sh_mobile_wait_for_vsync(info); | |
1130 | sh_mobile_wait_for_vsync(info); | |
1131 | } | |
1132 | sh_mobile_lcdc_clk_off(p); | |
1133 | } | |
1134 | ||
1135 | ch->blank_status = blank; | |
1136 | return 0; | |
1137 | } | |
1138 | ||
cfb4f5d1 | 1139 | static struct fb_ops sh_mobile_lcdc_ops = { |
9dd38819 | 1140 | .owner = THIS_MODULE, |
cfb4f5d1 | 1141 | .fb_setcolreg = sh_mobile_lcdc_setcolreg, |
2540c111 MD |
1142 | .fb_read = fb_sys_read, |
1143 | .fb_write = fb_sys_write, | |
8564557a MD |
1144 | .fb_fillrect = sh_mobile_lcdc_fillrect, |
1145 | .fb_copyarea = sh_mobile_lcdc_copyarea, | |
1146 | .fb_imageblit = sh_mobile_lcdc_imageblit, | |
8857b9aa | 1147 | .fb_blank = sh_mobile_lcdc_blank, |
9dd38819 | 1148 | .fb_pan_display = sh_mobile_fb_pan_display, |
40331b21 | 1149 | .fb_ioctl = sh_mobile_ioctl, |
dd210503 GL |
1150 | .fb_open = sh_mobile_open, |
1151 | .fb_release = sh_mobile_release, | |
1152 | .fb_check_var = sh_mobile_check_var, | |
cfb4f5d1 MD |
1153 | }; |
1154 | ||
3b0fd9d7 AC |
1155 | static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev) |
1156 | { | |
1157 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); | |
1158 | struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg; | |
1159 | int brightness = bdev->props.brightness; | |
1160 | ||
1161 | if (bdev->props.power != FB_BLANK_UNBLANK || | |
1162 | bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) | |
1163 | brightness = 0; | |
1164 | ||
1165 | return cfg->set_brightness(cfg->board_data, brightness); | |
1166 | } | |
1167 | ||
1168 | static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev) | |
1169 | { | |
1170 | struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); | |
1171 | struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg; | |
1172 | ||
1173 | return cfg->get_brightness(cfg->board_data); | |
1174 | } | |
1175 | ||
1176 | static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev, | |
1177 | struct fb_info *info) | |
1178 | { | |
1179 | return (info->bl_dev == bdev); | |
1180 | } | |
1181 | ||
1182 | static struct backlight_ops sh_mobile_lcdc_bl_ops = { | |
1183 | .options = BL_CORE_SUSPENDRESUME, | |
1184 | .update_status = sh_mobile_lcdc_update_bl, | |
1185 | .get_brightness = sh_mobile_lcdc_get_brightness, | |
1186 | .check_fb = sh_mobile_lcdc_check_fb, | |
1187 | }; | |
1188 | ||
1189 | static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent, | |
1190 | struct sh_mobile_lcdc_chan *ch) | |
1191 | { | |
1192 | struct backlight_device *bl; | |
1193 | ||
1194 | bl = backlight_device_register(ch->cfg.bl_info.name, parent, ch, | |
1195 | &sh_mobile_lcdc_bl_ops, NULL); | |
beee1f20 DC |
1196 | if (IS_ERR(bl)) { |
1197 | dev_err(parent, "unable to register backlight device: %ld\n", | |
1198 | PTR_ERR(bl)); | |
3b0fd9d7 AC |
1199 | return NULL; |
1200 | } | |
1201 | ||
1202 | bl->props.max_brightness = ch->cfg.bl_info.max_brightness; | |
1203 | bl->props.brightness = bl->props.max_brightness; | |
1204 | backlight_update_status(bl); | |
1205 | ||
1206 | return bl; | |
1207 | } | |
1208 | ||
1209 | static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev) | |
1210 | { | |
1211 | backlight_device_unregister(bdev); | |
1212 | } | |
1213 | ||
53b50314 DHG |
1214 | static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp, |
1215 | int nonstd) | |
cfb4f5d1 | 1216 | { |
53b50314 DHG |
1217 | if (nonstd) { |
1218 | switch (bpp) { | |
1219 | case 12: | |
1220 | case 16: | |
1221 | case 24: | |
1222 | var->bits_per_pixel = bpp; | |
1223 | var->nonstd = nonstd; | |
1224 | return 0; | |
1225 | default: | |
1226 | return -EINVAL; | |
1227 | } | |
1228 | } | |
1229 | ||
cfb4f5d1 MD |
1230 | switch (bpp) { |
1231 | case 16: /* PKF[4:0] = 00011 - RGB 565 */ | |
1232 | var->red.offset = 11; | |
1233 | var->red.length = 5; | |
1234 | var->green.offset = 5; | |
1235 | var->green.length = 6; | |
1236 | var->blue.offset = 0; | |
1237 | var->blue.length = 5; | |
1238 | var->transp.offset = 0; | |
1239 | var->transp.length = 0; | |
1240 | break; | |
1241 | ||
417d4827 MD |
1242 | case 24: /* PKF[4:0] = 01011 - RGB 888 */ |
1243 | var->red.offset = 16; | |
cfb4f5d1 | 1244 | var->red.length = 8; |
417d4827 | 1245 | var->green.offset = 8; |
cfb4f5d1 | 1246 | var->green.length = 8; |
417d4827 | 1247 | var->blue.offset = 0; |
cfb4f5d1 MD |
1248 | var->blue.length = 8; |
1249 | var->transp.offset = 0; | |
1250 | var->transp.length = 0; | |
1251 | break; | |
417d4827 MD |
1252 | |
1253 | case 32: /* PKF[4:0] = 00000 - RGBA 888 */ | |
1254 | var->red.offset = 16; | |
1255 | var->red.length = 8; | |
1256 | var->green.offset = 8; | |
1257 | var->green.length = 8; | |
1258 | var->blue.offset = 0; | |
1259 | var->blue.length = 8; | |
1260 | var->transp.offset = 24; | |
1261 | var->transp.length = 8; | |
1262 | break; | |
cfb4f5d1 MD |
1263 | default: |
1264 | return -EINVAL; | |
1265 | } | |
1266 | var->bits_per_pixel = bpp; | |
1267 | var->red.msb_right = 0; | |
1268 | var->green.msb_right = 0; | |
1269 | var->blue.msb_right = 0; | |
1270 | var->transp.msb_right = 0; | |
1271 | return 0; | |
1272 | } | |
1273 | ||
2feb075a MD |
1274 | static int sh_mobile_lcdc_suspend(struct device *dev) |
1275 | { | |
1276 | struct platform_device *pdev = to_platform_device(dev); | |
1277 | ||
1278 | sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); | |
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | static int sh_mobile_lcdc_resume(struct device *dev) | |
1283 | { | |
1284 | struct platform_device *pdev = to_platform_device(dev); | |
1285 | ||
1286 | return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); | |
1287 | } | |
1288 | ||
0246c471 MD |
1289 | static int sh_mobile_lcdc_runtime_suspend(struct device *dev) |
1290 | { | |
1291 | struct platform_device *pdev = to_platform_device(dev); | |
1292 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
1293 | struct sh_mobile_lcdc_chan *ch; | |
1294 | int k, n; | |
1295 | ||
1296 | /* save per-channel registers */ | |
1297 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
1298 | ch = &p->ch[k]; | |
1299 | if (!ch->enabled) | |
1300 | continue; | |
1301 | for (n = 0; n < NR_CH_REGS; n++) | |
1302 | ch->saved_ch_regs[n] = lcdc_read_chan(ch, n); | |
1303 | } | |
1304 | ||
1305 | /* save shared registers */ | |
1306 | for (n = 0; n < NR_SHARED_REGS; n++) | |
1307 | p->saved_shared_regs[n] = lcdc_read(p, lcdc_shared_regs[n]); | |
1308 | ||
1309 | /* turn off LCDC hardware */ | |
1310 | lcdc_write(p, _LDCNT1R, 0); | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static int sh_mobile_lcdc_runtime_resume(struct device *dev) | |
1315 | { | |
1316 | struct platform_device *pdev = to_platform_device(dev); | |
1317 | struct sh_mobile_lcdc_priv *p = platform_get_drvdata(pdev); | |
1318 | struct sh_mobile_lcdc_chan *ch; | |
1319 | int k, n; | |
1320 | ||
1321 | /* restore per-channel registers */ | |
1322 | for (k = 0; k < ARRAY_SIZE(p->ch); k++) { | |
1323 | ch = &p->ch[k]; | |
1324 | if (!ch->enabled) | |
1325 | continue; | |
1326 | for (n = 0; n < NR_CH_REGS; n++) | |
1327 | lcdc_write_chan(ch, n, ch->saved_ch_regs[n]); | |
1328 | } | |
1329 | ||
1330 | /* restore shared registers */ | |
1331 | for (n = 0; n < NR_SHARED_REGS; n++) | |
1332 | lcdc_write(p, lcdc_shared_regs[n], p->saved_shared_regs[n]); | |
1333 | ||
1334 | return 0; | |
1335 | } | |
1336 | ||
47145210 | 1337 | static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { |
2feb075a MD |
1338 | .suspend = sh_mobile_lcdc_suspend, |
1339 | .resume = sh_mobile_lcdc_resume, | |
0246c471 MD |
1340 | .runtime_suspend = sh_mobile_lcdc_runtime_suspend, |
1341 | .runtime_resume = sh_mobile_lcdc_runtime_resume, | |
2feb075a MD |
1342 | }; |
1343 | ||
6de9edd5 | 1344 | /* locking: called with info->lock held */ |
6011bdea GL |
1345 | static int sh_mobile_lcdc_notify(struct notifier_block *nb, |
1346 | unsigned long action, void *data) | |
1347 | { | |
1348 | struct fb_event *event = data; | |
1349 | struct fb_info *info = event->info; | |
1350 | struct sh_mobile_lcdc_chan *ch = info->par; | |
1351 | struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; | |
6011bdea GL |
1352 | |
1353 | if (&ch->lcdc->notifier != nb) | |
baf16374 | 1354 | return NOTIFY_DONE; |
6011bdea GL |
1355 | |
1356 | dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", | |
1357 | __func__, action, event->data); | |
1358 | ||
1359 | switch(action) { | |
1360 | case FB_EVENT_SUSPEND: | |
247f9938 | 1361 | if (board_cfg->display_off && try_module_get(board_cfg->owner)) { |
6011bdea | 1362 | board_cfg->display_off(board_cfg->board_data); |
6de9edd5 GL |
1363 | module_put(board_cfg->owner); |
1364 | } | |
afe417c0 | 1365 | sh_mobile_lcdc_stop(ch->lcdc); |
6011bdea GL |
1366 | break; |
1367 | case FB_EVENT_RESUME: | |
dd210503 GL |
1368 | mutex_lock(&ch->open_lock); |
1369 | sh_mobile_fb_reconfig(info); | |
1370 | mutex_unlock(&ch->open_lock); | |
6011bdea GL |
1371 | |
1372 | /* HDMI must be enabled before LCDC configuration */ | |
247f9938 | 1373 | if (board_cfg->display_on && try_module_get(board_cfg->owner)) { |
dd210503 | 1374 | board_cfg->display_on(board_cfg->board_data, info); |
6de9edd5 | 1375 | module_put(board_cfg->owner); |
6011bdea GL |
1376 | } |
1377 | ||
ebe5e12d | 1378 | sh_mobile_lcdc_start(ch->lcdc); |
6011bdea GL |
1379 | } |
1380 | ||
baf16374 | 1381 | return NOTIFY_OK; |
6011bdea GL |
1382 | } |
1383 | ||
cfb4f5d1 MD |
1384 | static int sh_mobile_lcdc_remove(struct platform_device *pdev); |
1385 | ||
c2e13037 | 1386 | static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) |
cfb4f5d1 MD |
1387 | { |
1388 | struct fb_info *info; | |
1389 | struct sh_mobile_lcdc_priv *priv; | |
01ac25b5 | 1390 | struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; |
cfb4f5d1 MD |
1391 | struct resource *res; |
1392 | int error; | |
1393 | void *buf; | |
1394 | int i, j; | |
1395 | ||
01ac25b5 | 1396 | if (!pdata) { |
cfb4f5d1 | 1397 | dev_err(&pdev->dev, "no platform data defined\n"); |
8bed9055 | 1398 | return -EINVAL; |
cfb4f5d1 MD |
1399 | } |
1400 | ||
1401 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
8564557a MD |
1402 | i = platform_get_irq(pdev, 0); |
1403 | if (!res || i < 0) { | |
1404 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
8bed9055 | 1405 | return -ENOENT; |
cfb4f5d1 MD |
1406 | } |
1407 | ||
1408 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
1409 | if (!priv) { | |
1410 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
8bed9055 | 1411 | return -ENOMEM; |
cfb4f5d1 MD |
1412 | } |
1413 | ||
8bed9055 GL |
1414 | platform_set_drvdata(pdev, priv); |
1415 | ||
8564557a | 1416 | error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED, |
7ad33e74 | 1417 | dev_name(&pdev->dev), priv); |
8564557a MD |
1418 | if (error) { |
1419 | dev_err(&pdev->dev, "unable to request irq\n"); | |
1420 | goto err1; | |
1421 | } | |
1422 | ||
1423 | priv->irq = i; | |
5ef6b505 | 1424 | atomic_set(&priv->hw_usecnt, -1); |
cfb4f5d1 MD |
1425 | |
1426 | j = 0; | |
1427 | for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) { | |
01ac25b5 | 1428 | struct sh_mobile_lcdc_chan *ch = priv->ch + j; |
cfb4f5d1 | 1429 | |
01ac25b5 GL |
1430 | ch->lcdc = priv; |
1431 | memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i])); | |
cfb4f5d1 | 1432 | |
01ac25b5 | 1433 | error = sh_mobile_lcdc_check_interface(ch); |
cfb4f5d1 MD |
1434 | if (error) { |
1435 | dev_err(&pdev->dev, "unsupported interface type\n"); | |
1436 | goto err1; | |
1437 | } | |
01ac25b5 GL |
1438 | init_waitqueue_head(&ch->frame_end_wait); |
1439 | init_completion(&ch->vsync_completion); | |
1440 | ch->pan_offset = 0; | |
cfb4f5d1 | 1441 | |
3b0fd9d7 AC |
1442 | /* probe the backlight is there is one defined */ |
1443 | if (ch->cfg.bl_info.max_brightness) | |
1444 | ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch); | |
1445 | ||
cfb4f5d1 MD |
1446 | switch (pdata->ch[i].chan) { |
1447 | case LCDC_CHAN_MAINLCD: | |
ce1c0b08 | 1448 | ch->enabled = LDCNT2R_ME; |
01ac25b5 | 1449 | ch->reg_offs = lcdc_offs_mainlcd; |
cfb4f5d1 MD |
1450 | j++; |
1451 | break; | |
1452 | case LCDC_CHAN_SUBLCD: | |
ce1c0b08 | 1453 | ch->enabled = LDCNT2R_SE; |
01ac25b5 | 1454 | ch->reg_offs = lcdc_offs_sublcd; |
cfb4f5d1 MD |
1455 | j++; |
1456 | break; | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | if (!j) { | |
1461 | dev_err(&pdev->dev, "no channels defined\n"); | |
1462 | error = -EINVAL; | |
1463 | goto err1; | |
1464 | } | |
1465 | ||
417d4827 MD |
1466 | /* for dual channel LCDC (MAIN + SUB) force shared bpp setting */ |
1467 | if (j == 2) | |
1468 | priv->forced_bpp = pdata->ch[0].bpp; | |
1469 | ||
dba6f385 GL |
1470 | priv->base = ioremap_nocache(res->start, resource_size(res)); |
1471 | if (!priv->base) | |
1472 | goto err1; | |
1473 | ||
b51339ff | 1474 | error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); |
cfb4f5d1 MD |
1475 | if (error) { |
1476 | dev_err(&pdev->dev, "unable to setup clocks\n"); | |
1477 | goto err1; | |
1478 | } | |
1479 | ||
7caa4342 D |
1480 | priv->meram_dev = pdata->meram_dev; |
1481 | ||
cfb4f5d1 | 1482 | for (i = 0; i < j; i++) { |
6011bdea | 1483 | struct fb_var_screeninfo *var; |
71d3b0fc | 1484 | const struct fb_videomode *lcd_cfg, *max_cfg = NULL; |
01ac25b5 | 1485 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
c44f9f76 GL |
1486 | struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg; |
1487 | const struct fb_videomode *mode = cfg->lcd_cfg; | |
71d3b0fc GL |
1488 | unsigned long max_size = 0; |
1489 | int k; | |
5fd284e6 | 1490 | int num_cfg; |
cfb4f5d1 | 1491 | |
01ac25b5 GL |
1492 | ch->info = framebuffer_alloc(0, &pdev->dev); |
1493 | if (!ch->info) { | |
e33afddc PM |
1494 | dev_err(&pdev->dev, "unable to allocate fb_info\n"); |
1495 | error = -ENOMEM; | |
1496 | break; | |
1497 | } | |
1498 | ||
01ac25b5 | 1499 | info = ch->info; |
6011bdea | 1500 | var = &info->var; |
cfb4f5d1 | 1501 | info->fbops = &sh_mobile_lcdc_ops; |
c44f9f76 | 1502 | info->par = ch; |
dd210503 GL |
1503 | |
1504 | mutex_init(&ch->open_lock); | |
1505 | ||
c44f9f76 GL |
1506 | for (k = 0, lcd_cfg = mode; |
1507 | k < cfg->num_cfg && lcd_cfg; | |
71d3b0fc GL |
1508 | k++, lcd_cfg++) { |
1509 | unsigned long size = lcd_cfg->yres * lcd_cfg->xres; | |
53b50314 DHG |
1510 | /* NV12 buffers must have even number of lines */ |
1511 | if ((cfg->nonstd) && cfg->bpp == 12 && | |
1512 | (lcd_cfg->yres & 0x1)) { | |
1513 | dev_err(&pdev->dev, "yres must be multiple of 2" | |
1514 | " for YCbCr420 mode.\n"); | |
1515 | error = -EINVAL; | |
1516 | goto err1; | |
1517 | } | |
71d3b0fc GL |
1518 | |
1519 | if (size > max_size) { | |
1520 | max_cfg = lcd_cfg; | |
1521 | max_size = size; | |
1522 | } | |
1523 | } | |
1524 | ||
c44f9f76 | 1525 | if (!mode) |
d2ecbab5 | 1526 | max_size = MAX_XRES * MAX_YRES; |
c44f9f76 GL |
1527 | else if (max_cfg) |
1528 | dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n", | |
1529 | max_cfg->xres, max_cfg->yres); | |
71d3b0fc | 1530 | |
cfb4f5d1 | 1531 | info->fix = sh_mobile_lcdc_fix; |
53b50314 DHG |
1532 | info->fix.smem_len = max_size * 2 * cfg->bpp / 8; |
1533 | ||
1534 | /* Only pan in 2 line steps for NV12 */ | |
1535 | if (cfg->nonstd && cfg->bpp == 12) | |
1536 | info->fix.ypanstep = 2; | |
cfb4f5d1 | 1537 | |
5fd284e6 | 1538 | if (!mode) { |
c44f9f76 | 1539 | mode = &default_720p; |
5fd284e6 GL |
1540 | num_cfg = 1; |
1541 | } else { | |
e0b9fb26 | 1542 | num_cfg = cfg->num_cfg; |
5fd284e6 GL |
1543 | } |
1544 | ||
1545 | fb_videomode_to_modelist(mode, num_cfg, &info->modelist); | |
c44f9f76 GL |
1546 | |
1547 | fb_videomode_to_var(var, mode); | |
e0b9fb26 GL |
1548 | var->width = cfg->lcd_size_cfg.width; |
1549 | var->height = cfg->lcd_size_cfg.height; | |
9dd38819 | 1550 | /* Default Y virtual resolution is 2x panel size */ |
6011bdea | 1551 | var->yres_virtual = var->yres * 2; |
6011bdea | 1552 | var->activate = FB_ACTIVATE_NOW; |
6011bdea | 1553 | |
53b50314 | 1554 | error = sh_mobile_lcdc_set_bpp(var, cfg->bpp, cfg->nonstd); |
cfb4f5d1 MD |
1555 | if (error) |
1556 | break; | |
1557 | ||
cfb4f5d1 | 1558 | buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, |
01ac25b5 | 1559 | &ch->dma_handle, GFP_KERNEL); |
cfb4f5d1 MD |
1560 | if (!buf) { |
1561 | dev_err(&pdev->dev, "unable to allocate buffer\n"); | |
1562 | error = -ENOMEM; | |
1563 | break; | |
1564 | } | |
1565 | ||
01ac25b5 | 1566 | info->pseudo_palette = &ch->pseudo_palette; |
cfb4f5d1 MD |
1567 | info->flags = FBINFO_FLAG_DEFAULT; |
1568 | ||
1569 | error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); | |
1570 | if (error < 0) { | |
1571 | dev_err(&pdev->dev, "unable to allocate cmap\n"); | |
1572 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
01ac25b5 | 1573 | buf, ch->dma_handle); |
cfb4f5d1 MD |
1574 | break; |
1575 | } | |
1576 | ||
01ac25b5 | 1577 | info->fix.smem_start = ch->dma_handle; |
53b50314 DHG |
1578 | if (var->nonstd) |
1579 | info->fix.line_length = var->xres; | |
1580 | else | |
1581 | info->fix.line_length = var->xres * (cfg->bpp / 8); | |
1582 | ||
cfb4f5d1 MD |
1583 | info->screen_base = buf; |
1584 | info->device = &pdev->dev; | |
1c120deb | 1585 | ch->display_var = *var; |
cfb4f5d1 MD |
1586 | } |
1587 | ||
1588 | if (error) | |
1589 | goto err1; | |
1590 | ||
1591 | error = sh_mobile_lcdc_start(priv); | |
1592 | if (error) { | |
1593 | dev_err(&pdev->dev, "unable to start hardware\n"); | |
1594 | goto err1; | |
1595 | } | |
1596 | ||
1597 | for (i = 0; i < j; i++) { | |
1c6a307a PM |
1598 | struct sh_mobile_lcdc_chan *ch = priv->ch + i; |
1599 | ||
e33afddc | 1600 | info = ch->info; |
1c6a307a PM |
1601 | |
1602 | if (info->fbdefio) { | |
8bed9055 | 1603 | ch->sglist = vmalloc(sizeof(struct scatterlist) * |
1c6a307a | 1604 | info->fix.smem_len >> PAGE_SHIFT); |
8bed9055 | 1605 | if (!ch->sglist) { |
1c6a307a PM |
1606 | dev_err(&pdev->dev, "cannot allocate sglist\n"); |
1607 | goto err1; | |
1608 | } | |
1609 | } | |
1610 | ||
3b0fd9d7 AC |
1611 | info->bl_dev = ch->bl; |
1612 | ||
1c6a307a | 1613 | error = register_framebuffer(info); |
cfb4f5d1 MD |
1614 | if (error < 0) |
1615 | goto err1; | |
cfb4f5d1 | 1616 | |
cfb4f5d1 MD |
1617 | dev_info(info->dev, |
1618 | "registered %s/%s as %dx%d %dbpp.\n", | |
1619 | pdev->name, | |
1c6a307a | 1620 | (ch->cfg.chan == LCDC_CHAN_MAINLCD) ? |
cfb4f5d1 | 1621 | "mainlcd" : "sublcd", |
c44f9f76 | 1622 | info->var.xres, info->var.yres, |
1c6a307a | 1623 | ch->cfg.bpp); |
8564557a MD |
1624 | |
1625 | /* deferred io mode: disable clock to save power */ | |
6011bdea | 1626 | if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) |
8564557a | 1627 | sh_mobile_lcdc_clk_off(priv); |
cfb4f5d1 MD |
1628 | } |
1629 | ||
6011bdea GL |
1630 | /* Failure ignored */ |
1631 | priv->notifier.notifier_call = sh_mobile_lcdc_notify; | |
1632 | fb_register_client(&priv->notifier); | |
1633 | ||
cfb4f5d1 | 1634 | return 0; |
8bed9055 | 1635 | err1: |
cfb4f5d1 | 1636 | sh_mobile_lcdc_remove(pdev); |
8bed9055 | 1637 | |
cfb4f5d1 MD |
1638 | return error; |
1639 | } | |
1640 | ||
1641 | static int sh_mobile_lcdc_remove(struct platform_device *pdev) | |
1642 | { | |
1643 | struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); | |
1644 | struct fb_info *info; | |
1645 | int i; | |
1646 | ||
6011bdea GL |
1647 | fb_unregister_client(&priv->notifier); |
1648 | ||
cfb4f5d1 | 1649 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) |
8bed9055 | 1650 | if (priv->ch[i].info && priv->ch[i].info->dev) |
e33afddc | 1651 | unregister_framebuffer(priv->ch[i].info); |
cfb4f5d1 MD |
1652 | |
1653 | sh_mobile_lcdc_stop(priv); | |
1654 | ||
1655 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { | |
e33afddc | 1656 | info = priv->ch[i].info; |
cfb4f5d1 | 1657 | |
e33afddc | 1658 | if (!info || !info->device) |
cfb4f5d1 MD |
1659 | continue; |
1660 | ||
1c6a307a PM |
1661 | if (priv->ch[i].sglist) |
1662 | vfree(priv->ch[i].sglist); | |
1663 | ||
1ffbb037 MD |
1664 | if (info->screen_base) |
1665 | dma_free_coherent(&pdev->dev, info->fix.smem_len, | |
1666 | info->screen_base, | |
1667 | priv->ch[i].dma_handle); | |
cfb4f5d1 | 1668 | fb_dealloc_cmap(&info->cmap); |
e33afddc | 1669 | framebuffer_release(info); |
cfb4f5d1 MD |
1670 | } |
1671 | ||
3b0fd9d7 AC |
1672 | for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { |
1673 | if (priv->ch[i].bl) | |
1674 | sh_mobile_lcdc_bl_remove(priv->ch[i].bl); | |
1675 | } | |
1676 | ||
b51339ff MD |
1677 | if (priv->dot_clk) |
1678 | clk_put(priv->dot_clk); | |
0246c471 | 1679 | |
8bed9055 GL |
1680 | if (priv->dev) |
1681 | pm_runtime_disable(priv->dev); | |
cfb4f5d1 MD |
1682 | |
1683 | if (priv->base) | |
1684 | iounmap(priv->base); | |
1685 | ||
8564557a MD |
1686 | if (priv->irq) |
1687 | free_irq(priv->irq, priv); | |
cfb4f5d1 MD |
1688 | kfree(priv); |
1689 | return 0; | |
1690 | } | |
1691 | ||
1692 | static struct platform_driver sh_mobile_lcdc_driver = { | |
1693 | .driver = { | |
1694 | .name = "sh_mobile_lcdc_fb", | |
1695 | .owner = THIS_MODULE, | |
2feb075a | 1696 | .pm = &sh_mobile_lcdc_dev_pm_ops, |
cfb4f5d1 MD |
1697 | }, |
1698 | .probe = sh_mobile_lcdc_probe, | |
1699 | .remove = sh_mobile_lcdc_remove, | |
1700 | }; | |
1701 | ||
1702 | static int __init sh_mobile_lcdc_init(void) | |
1703 | { | |
1704 | return platform_driver_register(&sh_mobile_lcdc_driver); | |
1705 | } | |
1706 | ||
1707 | static void __exit sh_mobile_lcdc_exit(void) | |
1708 | { | |
1709 | platform_driver_unregister(&sh_mobile_lcdc_driver); | |
1710 | } | |
1711 | ||
1712 | module_init(sh_mobile_lcdc_init); | |
1713 | module_exit(sh_mobile_lcdc_exit); | |
1714 | ||
1715 | MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); | |
1716 | MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); | |
1717 | MODULE_LICENSE("GPL v2"); |