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ec549a0f BD |
1 | /* linux/drivers/video/s3c-fb.c |
2 | * | |
3 | * Copyright 2008 Openmoko Inc. | |
50a5503a | 4 | * Copyright 2008-2010 Simtec Electronics |
ec549a0f BD |
5 | * Ben Dooks <ben@simtec.co.uk> |
6 | * http://armlinux.simtec.co.uk/ | |
7 | * | |
8 | * Samsung SoC Framebuffer driver | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
c4bb6ffa | 12 | * published by the Free Software FoundatIon. |
ec549a0f BD |
13 | */ |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/dma-mapping.h> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
ec549a0f | 20 | #include <linux/init.h> |
ec549a0f BD |
21 | #include <linux/clk.h> |
22 | #include <linux/fb.h> | |
23 | #include <linux/io.h> | |
efdc846d PO |
24 | #include <linux/uaccess.h> |
25 | #include <linux/interrupt.h> | |
4959212c | 26 | #include <linux/pm_runtime.h> |
ec549a0f BD |
27 | |
28 | #include <mach/map.h> | |
c4bb6ffa | 29 | #include <plat/regs-fb-v4.h> |
ec549a0f BD |
30 | #include <plat/fb.h> |
31 | ||
32 | /* This driver will export a number of framebuffer interfaces depending | |
33 | * on the configuration passed in via the platform data. Each fb instance | |
34 | * maps to a hardware window. Currently there is no support for runtime | |
35 | * setting of the alpha-blending functions that each window has, so only | |
36 | * window 0 is actually useful. | |
37 | * | |
38 | * Window 0 is treated specially, it is used for the basis of the LCD | |
39 | * output timings and as the control for the output power-down state. | |
40 | */ | |
41 | ||
50a5503a BD |
42 | /* note, the previous use of <mach/regs-fb.h> to get platform specific data |
43 | * has been replaced by using the platform device name to pick the correct | |
44 | * configuration data for the system. | |
ec549a0f BD |
45 | */ |
46 | ||
47 | #ifdef CONFIG_FB_S3C_DEBUG_REGWRITE | |
48 | #undef writel | |
49 | #define writel(v, r) do { \ | |
50 | printk(KERN_DEBUG "%s: %08x => %p\n", __func__, (unsigned int)v, r); \ | |
b73a21fc | 51 | __raw_writel(v, r); } while (0) |
ec549a0f BD |
52 | #endif /* FB_S3C_DEBUG_REGWRITE */ |
53 | ||
efdc846d PO |
54 | /* irq_flags bits */ |
55 | #define S3C_FB_VSYNC_IRQ_EN 0 | |
56 | ||
57 | #define VSYNC_TIMEOUT_MSEC 50 | |
58 | ||
ec549a0f BD |
59 | struct s3c_fb; |
60 | ||
50a5503a BD |
61 | #define VALID_BPP(x) (1 << ((x) - 1)) |
62 | ||
c4bb6ffa BD |
63 | #define OSD_BASE(win, variant) ((variant).osd + ((win) * (variant).osd_stride)) |
64 | #define VIDOSD_A(win, variant) (OSD_BASE(win, variant) + 0x00) | |
65 | #define VIDOSD_B(win, variant) (OSD_BASE(win, variant) + 0x04) | |
66 | #define VIDOSD_C(win, variant) (OSD_BASE(win, variant) + 0x08) | |
67 | #define VIDOSD_D(win, variant) (OSD_BASE(win, variant) + 0x0C) | |
68 | ||
50a5503a BD |
69 | /** |
70 | * struct s3c_fb_variant - fb variant information | |
c4bb6ffa | 71 | * @is_2443: Set if S3C2443/S3C2416 style hardware. |
50a5503a | 72 | * @nr_windows: The number of windows. |
c4bb6ffa BD |
73 | * @vidtcon: The base for the VIDTCONx registers |
74 | * @wincon: The base for the WINxCON registers. | |
75 | * @winmap: The base for the WINxMAP registers. | |
76 | * @keycon: The abse for the WxKEYCON registers. | |
77 | * @buf_start: Offset of buffer start registers. | |
78 | * @buf_size: Offset of buffer size registers. | |
79 | * @buf_end: Offset of buffer end registers. | |
80 | * @osd: The base for the OSD registers. | |
50a5503a | 81 | * @palette: Address of palette memory, or 0 if none. |
067b226b | 82 | * @has_prtcon: Set if has PRTCON register. |
f5ec546f | 83 | * @has_shadowcon: Set if has SHADOWCON register. |
50a5503a BD |
84 | */ |
85 | struct s3c_fb_variant { | |
c4bb6ffa | 86 | unsigned int is_2443:1; |
50a5503a | 87 | unsigned short nr_windows; |
c4bb6ffa BD |
88 | unsigned short vidtcon; |
89 | unsigned short wincon; | |
90 | unsigned short winmap; | |
91 | unsigned short keycon; | |
92 | unsigned short buf_start; | |
93 | unsigned short buf_end; | |
94 | unsigned short buf_size; | |
95 | unsigned short osd; | |
96 | unsigned short osd_stride; | |
50a5503a | 97 | unsigned short palette[S3C_FB_MAX_WIN]; |
067b226b PO |
98 | |
99 | unsigned int has_prtcon:1; | |
f5ec546f | 100 | unsigned int has_shadowcon:1; |
50a5503a BD |
101 | }; |
102 | ||
103 | /** | |
104 | * struct s3c_fb_win_variant | |
105 | * @has_osd_c: Set if has OSD C register. | |
106 | * @has_osd_d: Set if has OSD D register. | |
f676ec2a | 107 | * @has_osd_alpha: Set if can change alpha transparency for a window. |
50a5503a BD |
108 | * @palette_sz: Size of palette in entries. |
109 | * @palette_16bpp: Set if palette is 16bits wide. | |
f676ec2a PO |
110 | * @osd_size_off: If != 0, supports setting up OSD for a window; the appropriate |
111 | * register is located at the given offset from OSD_BASE. | |
50a5503a BD |
112 | * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel. |
113 | * | |
114 | * valid_bpp bit x is set if (x+1)BPP is supported. | |
115 | */ | |
116 | struct s3c_fb_win_variant { | |
117 | unsigned int has_osd_c:1; | |
118 | unsigned int has_osd_d:1; | |
f676ec2a | 119 | unsigned int has_osd_alpha:1; |
50a5503a | 120 | unsigned int palette_16bpp:1; |
f676ec2a | 121 | unsigned short osd_size_off; |
50a5503a BD |
122 | unsigned short palette_sz; |
123 | u32 valid_bpp; | |
124 | }; | |
125 | ||
126 | /** | |
127 | * struct s3c_fb_driverdata - per-device type driver data for init time. | |
128 | * @variant: The variant information for this driver. | |
129 | * @win: The window information for each window. | |
130 | */ | |
131 | struct s3c_fb_driverdata { | |
132 | struct s3c_fb_variant variant; | |
133 | struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN]; | |
134 | }; | |
135 | ||
bc2da1b6 BD |
136 | /** |
137 | * struct s3c_fb_palette - palette information | |
138 | * @r: Red bitfield. | |
139 | * @g: Green bitfield. | |
140 | * @b: Blue bitfield. | |
141 | * @a: Alpha bitfield. | |
142 | */ | |
143 | struct s3c_fb_palette { | |
144 | struct fb_bitfield r; | |
145 | struct fb_bitfield g; | |
146 | struct fb_bitfield b; | |
147 | struct fb_bitfield a; | |
148 | }; | |
149 | ||
ec549a0f BD |
150 | /** |
151 | * struct s3c_fb_win - per window private data for each framebuffer. | |
152 | * @windata: The platform data supplied for the window configuration. | |
153 | * @parent: The hardware that this window is part of. | |
154 | * @fbinfo: Pointer pack to the framebuffer info for this window. | |
50a5503a | 155 | * @varint: The variant information for this window. |
ec549a0f BD |
156 | * @palette_buffer: Buffer/cache to hold palette entries. |
157 | * @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/ | |
158 | * @index: The window number of this window. | |
159 | * @palette: The bitfields for changing r/g/b into a hardware palette entry. | |
160 | */ | |
161 | struct s3c_fb_win { | |
162 | struct s3c_fb_pd_win *windata; | |
163 | struct s3c_fb *parent; | |
164 | struct fb_info *fbinfo; | |
165 | struct s3c_fb_palette palette; | |
50a5503a | 166 | struct s3c_fb_win_variant variant; |
ec549a0f BD |
167 | |
168 | u32 *palette_buffer; | |
169 | u32 pseudo_palette[16]; | |
170 | unsigned int index; | |
171 | }; | |
172 | ||
efdc846d PO |
173 | /** |
174 | * struct s3c_fb_vsync - vsync information | |
175 | * @wait: a queue for processes waiting for vsync | |
176 | * @count: vsync interrupt count | |
177 | */ | |
178 | struct s3c_fb_vsync { | |
179 | wait_queue_head_t wait; | |
180 | unsigned int count; | |
181 | }; | |
182 | ||
ec549a0f BD |
183 | /** |
184 | * struct s3c_fb - overall hardware state of the hardware | |
b07f3bbe | 185 | * @slock: The spinlock protection for this data sturcture. |
ec549a0f BD |
186 | * @dev: The device that we bound to, for printing, etc. |
187 | * @regs_res: The resource we claimed for the IO registers. | |
188 | * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk. | |
189 | * @regs: The mapped hardware registers. | |
50a5503a | 190 | * @variant: Variant information for this hardware. |
ec549a0f BD |
191 | * @enabled: A bitmask of enabled hardware windows. |
192 | * @pdata: The platform configuration data passed with the device. | |
193 | * @windows: The hardware windows that have been claimed. | |
efdc846d PO |
194 | * @irq_no: IRQ line number |
195 | * @irq_flags: irq flags | |
196 | * @vsync_info: VSYNC-related information (count, queues...) | |
ec549a0f BD |
197 | */ |
198 | struct s3c_fb { | |
b07f3bbe | 199 | spinlock_t slock; |
ec549a0f BD |
200 | struct device *dev; |
201 | struct resource *regs_res; | |
202 | struct clk *bus_clk; | |
203 | void __iomem *regs; | |
50a5503a | 204 | struct s3c_fb_variant variant; |
ec549a0f BD |
205 | |
206 | unsigned char enabled; | |
207 | ||
208 | struct s3c_fb_platdata *pdata; | |
209 | struct s3c_fb_win *windows[S3C_FB_MAX_WIN]; | |
efdc846d PO |
210 | |
211 | int irq_no; | |
212 | unsigned long irq_flags; | |
213 | struct s3c_fb_vsync vsync_info; | |
ec549a0f BD |
214 | }; |
215 | ||
216 | /** | |
50a5503a BD |
217 | * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode. |
218 | * @win: The device window. | |
219 | * @bpp: The bit depth. | |
ec549a0f | 220 | */ |
50a5503a | 221 | static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp) |
ec549a0f | 222 | { |
50a5503a | 223 | return win->variant.valid_bpp & VALID_BPP(bpp); |
ec549a0f BD |
224 | } |
225 | ||
226 | /** | |
227 | * s3c_fb_check_var() - framebuffer layer request to verify a given mode. | |
228 | * @var: The screen information to verify. | |
229 | * @info: The framebuffer device. | |
230 | * | |
231 | * Framebuffer layer call to verify the given information and allow us to | |
232 | * update various information depending on the hardware capabilities. | |
233 | */ | |
234 | static int s3c_fb_check_var(struct fb_var_screeninfo *var, | |
235 | struct fb_info *info) | |
236 | { | |
237 | struct s3c_fb_win *win = info->par; | |
238 | struct s3c_fb_pd_win *windata = win->windata; | |
239 | struct s3c_fb *sfb = win->parent; | |
240 | ||
241 | dev_dbg(sfb->dev, "checking parameters\n"); | |
242 | ||
243 | var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres); | |
244 | var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres); | |
245 | ||
50a5503a | 246 | if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) { |
ec549a0f BD |
247 | dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n", |
248 | win->index, var->bits_per_pixel); | |
249 | return -EINVAL; | |
250 | } | |
251 | ||
252 | /* always ensure these are zero, for drop through cases below */ | |
253 | var->transp.offset = 0; | |
254 | var->transp.length = 0; | |
255 | ||
256 | switch (var->bits_per_pixel) { | |
257 | case 1: | |
258 | case 2: | |
259 | case 4: | |
260 | case 8: | |
50a5503a | 261 | if (sfb->variant.palette[win->index] != 0) { |
ec549a0f BD |
262 | /* non palletised, A:1,R:2,G:3,B:2 mode */ |
263 | var->red.offset = 4; | |
264 | var->green.offset = 2; | |
265 | var->blue.offset = 0; | |
266 | var->red.length = 5; | |
267 | var->green.length = 3; | |
268 | var->blue.length = 2; | |
269 | var->transp.offset = 7; | |
270 | var->transp.length = 1; | |
271 | } else { | |
272 | var->red.offset = 0; | |
273 | var->red.length = var->bits_per_pixel; | |
274 | var->green = var->red; | |
275 | var->blue = var->red; | |
276 | } | |
277 | break; | |
278 | ||
279 | case 19: | |
280 | /* 666 with one bit alpha/transparency */ | |
281 | var->transp.offset = 18; | |
282 | var->transp.length = 1; | |
283 | case 18: | |
284 | var->bits_per_pixel = 32; | |
285 | ||
286 | /* 666 format */ | |
287 | var->red.offset = 12; | |
288 | var->green.offset = 6; | |
289 | var->blue.offset = 0; | |
290 | var->red.length = 6; | |
291 | var->green.length = 6; | |
292 | var->blue.length = 6; | |
293 | break; | |
294 | ||
295 | case 16: | |
296 | /* 16 bpp, 565 format */ | |
297 | var->red.offset = 11; | |
298 | var->green.offset = 5; | |
299 | var->blue.offset = 0; | |
300 | var->red.length = 5; | |
301 | var->green.length = 6; | |
302 | var->blue.length = 5; | |
303 | break; | |
304 | ||
305 | case 28: | |
306 | case 25: | |
307 | var->transp.length = var->bits_per_pixel - 24; | |
308 | var->transp.offset = 24; | |
309 | /* drop through */ | |
310 | case 24: | |
311 | /* our 24bpp is unpacked, so 32bpp */ | |
312 | var->bits_per_pixel = 32; | |
313 | case 32: | |
314 | var->red.offset = 16; | |
315 | var->red.length = 8; | |
316 | var->green.offset = 8; | |
317 | var->green.length = 8; | |
318 | var->blue.offset = 0; | |
319 | var->blue.length = 8; | |
320 | break; | |
321 | ||
322 | default: | |
323 | dev_err(sfb->dev, "invalid bpp\n"); | |
324 | } | |
325 | ||
326 | dev_dbg(sfb->dev, "%s: verified parameters\n", __func__); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | /** | |
331 | * s3c_fb_calc_pixclk() - calculate the divider to create the pixel clock. | |
332 | * @sfb: The hardware state. | |
333 | * @pixclock: The pixel clock wanted, in picoseconds. | |
334 | * | |
335 | * Given the specified pixel clock, work out the necessary divider to get | |
336 | * close to the output frequency. | |
337 | */ | |
eb29a5cc | 338 | static int s3c_fb_calc_pixclk(struct s3c_fb *sfb, unsigned int pixclk) |
ec549a0f BD |
339 | { |
340 | unsigned long clk = clk_get_rate(sfb->bus_clk); | |
eb29a5cc | 341 | unsigned long long tmp; |
ec549a0f BD |
342 | unsigned int result; |
343 | ||
eb29a5cc MB |
344 | tmp = (unsigned long long)clk; |
345 | tmp *= pixclk; | |
346 | ||
347 | do_div(tmp, 1000000000UL); | |
348 | result = (unsigned int)tmp / 1000; | |
ec549a0f BD |
349 | |
350 | dev_dbg(sfb->dev, "pixclk=%u, clk=%lu, div=%d (%lu)\n", | |
351 | pixclk, clk, result, clk / result); | |
352 | ||
353 | return result; | |
354 | } | |
355 | ||
356 | /** | |
357 | * s3c_fb_align_word() - align pixel count to word boundary | |
358 | * @bpp: The number of bits per pixel | |
359 | * @pix: The value to be aligned. | |
360 | * | |
361 | * Align the given pixel count so that it will start on an 32bit word | |
362 | * boundary. | |
363 | */ | |
364 | static int s3c_fb_align_word(unsigned int bpp, unsigned int pix) | |
365 | { | |
366 | int pix_per_word; | |
367 | ||
368 | if (bpp > 16) | |
369 | return pix; | |
370 | ||
371 | pix_per_word = (8 * 32) / bpp; | |
372 | return ALIGN(pix, pix_per_word); | |
373 | } | |
374 | ||
f676ec2a PO |
375 | /** |
376 | * vidosd_set_size() - set OSD size for a window | |
377 | * | |
378 | * @win: the window to set OSD size for | |
379 | * @size: OSD size register value | |
380 | */ | |
381 | static void vidosd_set_size(struct s3c_fb_win *win, u32 size) | |
382 | { | |
383 | struct s3c_fb *sfb = win->parent; | |
384 | ||
385 | /* OSD can be set up if osd_size_off != 0 for this window */ | |
386 | if (win->variant.osd_size_off) | |
387 | writel(size, sfb->regs + OSD_BASE(win->index, sfb->variant) | |
388 | + win->variant.osd_size_off); | |
389 | } | |
390 | ||
391 | /** | |
392 | * vidosd_set_alpha() - set alpha transparency for a window | |
393 | * | |
394 | * @win: the window to set OSD size for | |
395 | * @alpha: alpha register value | |
396 | */ | |
397 | static void vidosd_set_alpha(struct s3c_fb_win *win, u32 alpha) | |
398 | { | |
399 | struct s3c_fb *sfb = win->parent; | |
400 | ||
401 | if (win->variant.has_osd_alpha) | |
402 | writel(alpha, sfb->regs + VIDOSD_C(win->index, sfb->variant)); | |
403 | } | |
404 | ||
f5ec546f PO |
405 | /** |
406 | * shadow_protect_win() - disable updating values from shadow registers at vsync | |
407 | * | |
408 | * @win: window to protect registers for | |
409 | * @protect: 1 to protect (disable updates) | |
410 | */ | |
411 | static void shadow_protect_win(struct s3c_fb_win *win, bool protect) | |
412 | { | |
413 | struct s3c_fb *sfb = win->parent; | |
414 | u32 reg; | |
415 | ||
416 | if (protect) { | |
417 | if (sfb->variant.has_prtcon) { | |
418 | writel(PRTCON_PROTECT, sfb->regs + PRTCON); | |
419 | } else if (sfb->variant.has_shadowcon) { | |
420 | reg = readl(sfb->regs + SHADOWCON); | |
421 | writel(reg | SHADOWCON_WINx_PROTECT(win->index), | |
422 | sfb->regs + SHADOWCON); | |
423 | } | |
424 | } else { | |
425 | if (sfb->variant.has_prtcon) { | |
426 | writel(0, sfb->regs + PRTCON); | |
427 | } else if (sfb->variant.has_shadowcon) { | |
428 | reg = readl(sfb->regs + SHADOWCON); | |
429 | writel(reg & ~SHADOWCON_WINx_PROTECT(win->index), | |
430 | sfb->regs + SHADOWCON); | |
431 | } | |
432 | } | |
433 | } | |
434 | ||
ec549a0f BD |
435 | /** |
436 | * s3c_fb_set_par() - framebuffer request to set new framebuffer state. | |
437 | * @info: The framebuffer to change. | |
438 | * | |
439 | * Framebuffer layer request to set a new mode for the specified framebuffer | |
440 | */ | |
441 | static int s3c_fb_set_par(struct fb_info *info) | |
442 | { | |
443 | struct fb_var_screeninfo *var = &info->var; | |
444 | struct s3c_fb_win *win = info->par; | |
445 | struct s3c_fb *sfb = win->parent; | |
446 | void __iomem *regs = sfb->regs; | |
c4bb6ffa | 447 | void __iomem *buf = regs; |
ec549a0f | 448 | int win_no = win->index; |
f676ec2a | 449 | u32 alpha = 0; |
ec549a0f BD |
450 | u32 data; |
451 | u32 pagewidth; | |
452 | int clkdiv; | |
453 | ||
454 | dev_dbg(sfb->dev, "setting framebuffer parameters\n"); | |
455 | ||
a8bdabca PO |
456 | shadow_protect_win(win, 1); |
457 | ||
ec549a0f BD |
458 | switch (var->bits_per_pixel) { |
459 | case 32: | |
460 | case 24: | |
461 | case 16: | |
462 | case 12: | |
463 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
464 | break; | |
465 | case 8: | |
50a5503a | 466 | if (win->variant.palette_sz >= 256) |
ec549a0f BD |
467 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
468 | else | |
469 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
470 | break; | |
471 | case 1: | |
472 | info->fix.visual = FB_VISUAL_MONO01; | |
473 | break; | |
474 | default: | |
475 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
476 | break; | |
477 | } | |
478 | ||
479 | info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8; | |
480 | ||
067b226b PO |
481 | info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0; |
482 | info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0; | |
483 | ||
ec549a0f BD |
484 | /* disable the window whilst we update it */ |
485 | writel(0, regs + WINCON(win_no)); | |
486 | ||
ad04490a | 487 | /* use platform specified window as the basis for the lcd timings */ |
ec549a0f | 488 | |
ad04490a | 489 | if (win_no == sfb->pdata->default_win) { |
eb29a5cc | 490 | clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock); |
ec549a0f BD |
491 | |
492 | data = sfb->pdata->vidcon0; | |
493 | data &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR); | |
494 | ||
495 | if (clkdiv > 1) | |
496 | data |= VIDCON0_CLKVAL_F(clkdiv-1) | VIDCON0_CLKDIR; | |
497 | else | |
498 | data &= ~VIDCON0_CLKDIR; /* 1:1 clock */ | |
499 | ||
500 | /* write the timing data to the panel */ | |
501 | ||
c4bb6ffa BD |
502 | if (sfb->variant.is_2443) |
503 | data |= (1 << 5); | |
504 | ||
ec549a0f BD |
505 | data |= VIDCON0_ENVID | VIDCON0_ENVID_F; |
506 | writel(data, regs + VIDCON0); | |
507 | ||
508 | data = VIDTCON0_VBPD(var->upper_margin - 1) | | |
509 | VIDTCON0_VFPD(var->lower_margin - 1) | | |
510 | VIDTCON0_VSPW(var->vsync_len - 1); | |
511 | ||
c4bb6ffa | 512 | writel(data, regs + sfb->variant.vidtcon); |
ec549a0f BD |
513 | |
514 | data = VIDTCON1_HBPD(var->left_margin - 1) | | |
515 | VIDTCON1_HFPD(var->right_margin - 1) | | |
516 | VIDTCON1_HSPW(var->hsync_len - 1); | |
517 | ||
c4bb6ffa BD |
518 | /* VIDTCON1 */ |
519 | writel(data, regs + sfb->variant.vidtcon + 4); | |
ec549a0f BD |
520 | |
521 | data = VIDTCON2_LINEVAL(var->yres - 1) | | |
522 | VIDTCON2_HOZVAL(var->xres - 1); | |
b73a21fc | 523 | writel(data, regs + sfb->variant.vidtcon + 8); |
ec549a0f BD |
524 | } |
525 | ||
526 | /* write the buffer address */ | |
527 | ||
c4bb6ffa BD |
528 | /* start and end registers stride is 8 */ |
529 | buf = regs + win_no * 8; | |
530 | ||
531 | writel(info->fix.smem_start, buf + sfb->variant.buf_start); | |
ec549a0f BD |
532 | |
533 | data = info->fix.smem_start + info->fix.line_length * var->yres; | |
c4bb6ffa | 534 | writel(data, buf + sfb->variant.buf_end); |
ec549a0f BD |
535 | |
536 | pagewidth = (var->xres * var->bits_per_pixel) >> 3; | |
537 | data = VIDW_BUF_SIZE_OFFSET(info->fix.line_length - pagewidth) | | |
538 | VIDW_BUF_SIZE_PAGEWIDTH(pagewidth); | |
c4bb6ffa | 539 | writel(data, regs + sfb->variant.buf_size + (win_no * 4)); |
ec549a0f BD |
540 | |
541 | /* write 'OSD' registers to control position of framebuffer */ | |
542 | ||
543 | data = VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0); | |
c4bb6ffa | 544 | writel(data, regs + VIDOSD_A(win_no, sfb->variant)); |
ec549a0f BD |
545 | |
546 | data = VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var->bits_per_pixel, | |
547 | var->xres - 1)) | | |
548 | VIDOSDxB_BOTRIGHT_Y(var->yres - 1); | |
549 | ||
c4bb6ffa | 550 | writel(data, regs + VIDOSD_B(win_no, sfb->variant)); |
ec549a0f BD |
551 | |
552 | data = var->xres * var->yres; | |
39000d65 | 553 | |
f676ec2a | 554 | alpha = VIDISD14C_ALPHA1_R(0xf) | |
39000d65 ID |
555 | VIDISD14C_ALPHA1_G(0xf) | |
556 | VIDISD14C_ALPHA1_B(0xf); | |
557 | ||
f676ec2a PO |
558 | vidosd_set_alpha(win, alpha); |
559 | vidosd_set_size(win, data); | |
ec549a0f BD |
560 | |
561 | data = WINCONx_ENWIN; | |
562 | ||
563 | /* note, since we have to round up the bits-per-pixel, we end up | |
564 | * relying on the bitfield information for r/g/b/a to work out | |
565 | * exactly which mode of operation is intended. */ | |
566 | ||
567 | switch (var->bits_per_pixel) { | |
568 | case 1: | |
569 | data |= WINCON0_BPPMODE_1BPP; | |
570 | data |= WINCONx_BITSWP; | |
571 | data |= WINCONx_BURSTLEN_4WORD; | |
572 | break; | |
573 | case 2: | |
574 | data |= WINCON0_BPPMODE_2BPP; | |
575 | data |= WINCONx_BITSWP; | |
576 | data |= WINCONx_BURSTLEN_8WORD; | |
577 | break; | |
578 | case 4: | |
579 | data |= WINCON0_BPPMODE_4BPP; | |
580 | data |= WINCONx_BITSWP; | |
581 | data |= WINCONx_BURSTLEN_8WORD; | |
582 | break; | |
583 | case 8: | |
584 | if (var->transp.length != 0) | |
585 | data |= WINCON1_BPPMODE_8BPP_1232; | |
586 | else | |
587 | data |= WINCON0_BPPMODE_8BPP_PALETTE; | |
588 | data |= WINCONx_BURSTLEN_8WORD; | |
589 | data |= WINCONx_BYTSWP; | |
590 | break; | |
591 | case 16: | |
592 | if (var->transp.length != 0) | |
593 | data |= WINCON1_BPPMODE_16BPP_A1555; | |
594 | else | |
595 | data |= WINCON0_BPPMODE_16BPP_565; | |
596 | data |= WINCONx_HAWSWP; | |
597 | data |= WINCONx_BURSTLEN_16WORD; | |
598 | break; | |
599 | case 24: | |
600 | case 32: | |
601 | if (var->red.length == 6) { | |
602 | if (var->transp.length != 0) | |
603 | data |= WINCON1_BPPMODE_19BPP_A1666; | |
604 | else | |
605 | data |= WINCON1_BPPMODE_18BPP_666; | |
39000d65 ID |
606 | } else if (var->transp.length == 1) |
607 | data |= WINCON1_BPPMODE_25BPP_A1888 | |
608 | | WINCON1_BLD_PIX; | |
609 | else if (var->transp.length == 4) | |
610 | data |= WINCON1_BPPMODE_28BPP_A4888 | |
611 | | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL; | |
ec549a0f BD |
612 | else |
613 | data |= WINCON0_BPPMODE_24BPP_888; | |
614 | ||
dc8498c0 | 615 | data |= WINCONx_WSWP; |
ec549a0f BD |
616 | data |= WINCONx_BURSTLEN_16WORD; |
617 | break; | |
618 | } | |
619 | ||
c4bb6ffa | 620 | /* Enable the colour keying for the window below this one */ |
39000d65 ID |
621 | if (win_no > 0) { |
622 | u32 keycon0_data = 0, keycon1_data = 0; | |
c4bb6ffa | 623 | void __iomem *keycon = regs + sfb->variant.keycon; |
39000d65 ID |
624 | |
625 | keycon0_data = ~(WxKEYCON0_KEYBL_EN | | |
626 | WxKEYCON0_KEYEN_F | | |
627 | WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0); | |
628 | ||
629 | keycon1_data = WxKEYCON1_COLVAL(0xffffff); | |
630 | ||
c4bb6ffa BD |
631 | keycon += (win_no - 1) * 8; |
632 | ||
633 | writel(keycon0_data, keycon + WKEYCON0); | |
634 | writel(keycon1_data, keycon + WKEYCON1); | |
39000d65 ID |
635 | } |
636 | ||
c4bb6ffa BD |
637 | writel(data, regs + sfb->variant.wincon + (win_no * 4)); |
638 | writel(0x0, regs + sfb->variant.winmap + (win_no * 4)); | |
ec549a0f | 639 | |
04ab9ef9 PO |
640 | /* Enable DMA channel for this window */ |
641 | if (sfb->variant.has_shadowcon) { | |
642 | data = readl(sfb->regs + SHADOWCON); | |
643 | data |= SHADOWCON_CHx_ENABLE(win_no); | |
644 | writel(data, sfb->regs + SHADOWCON); | |
645 | } | |
646 | ||
a8bdabca PO |
647 | shadow_protect_win(win, 0); |
648 | ||
ec549a0f BD |
649 | return 0; |
650 | } | |
651 | ||
652 | /** | |
653 | * s3c_fb_update_palette() - set or schedule a palette update. | |
654 | * @sfb: The hardware information. | |
655 | * @win: The window being updated. | |
656 | * @reg: The palette index being changed. | |
657 | * @value: The computed palette value. | |
658 | * | |
659 | * Change the value of a palette register, either by directly writing to | |
660 | * the palette (this requires the palette RAM to be disconnected from the | |
661 | * hardware whilst this is in progress) or schedule the update for later. | |
662 | * | |
663 | * At the moment, since we have no VSYNC interrupt support, we simply set | |
664 | * the palette entry directly. | |
665 | */ | |
666 | static void s3c_fb_update_palette(struct s3c_fb *sfb, | |
667 | struct s3c_fb_win *win, | |
668 | unsigned int reg, | |
669 | u32 value) | |
670 | { | |
671 | void __iomem *palreg; | |
672 | u32 palcon; | |
673 | ||
50a5503a | 674 | palreg = sfb->regs + sfb->variant.palette[win->index]; |
ec549a0f BD |
675 | |
676 | dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n", | |
677 | __func__, win->index, reg, palreg, value); | |
678 | ||
679 | win->palette_buffer[reg] = value; | |
680 | ||
681 | palcon = readl(sfb->regs + WPALCON); | |
682 | writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON); | |
683 | ||
50a5503a BD |
684 | if (win->variant.palette_16bpp) |
685 | writew(value, palreg + (reg * 2)); | |
ec549a0f | 686 | else |
50a5503a | 687 | writel(value, palreg + (reg * 4)); |
ec549a0f BD |
688 | |
689 | writel(palcon, sfb->regs + WPALCON); | |
690 | } | |
691 | ||
692 | static inline unsigned int chan_to_field(unsigned int chan, | |
693 | struct fb_bitfield *bf) | |
694 | { | |
695 | chan &= 0xffff; | |
696 | chan >>= 16 - bf->length; | |
697 | return chan << bf->offset; | |
698 | } | |
699 | ||
700 | /** | |
701 | * s3c_fb_setcolreg() - framebuffer layer request to change palette. | |
702 | * @regno: The palette index to change. | |
703 | * @red: The red field for the palette data. | |
704 | * @green: The green field for the palette data. | |
705 | * @blue: The blue field for the palette data. | |
706 | * @trans: The transparency (alpha) field for the palette data. | |
707 | * @info: The framebuffer being changed. | |
708 | */ | |
709 | static int s3c_fb_setcolreg(unsigned regno, | |
710 | unsigned red, unsigned green, unsigned blue, | |
711 | unsigned transp, struct fb_info *info) | |
712 | { | |
713 | struct s3c_fb_win *win = info->par; | |
714 | struct s3c_fb *sfb = win->parent; | |
715 | unsigned int val; | |
716 | ||
717 | dev_dbg(sfb->dev, "%s: win %d: %d => rgb=%d/%d/%d\n", | |
718 | __func__, win->index, regno, red, green, blue); | |
719 | ||
720 | switch (info->fix.visual) { | |
721 | case FB_VISUAL_TRUECOLOR: | |
722 | /* true-colour, use pseudo-palette */ | |
723 | ||
724 | if (regno < 16) { | |
725 | u32 *pal = info->pseudo_palette; | |
726 | ||
727 | val = chan_to_field(red, &info->var.red); | |
728 | val |= chan_to_field(green, &info->var.green); | |
729 | val |= chan_to_field(blue, &info->var.blue); | |
730 | ||
731 | pal[regno] = val; | |
732 | } | |
733 | break; | |
734 | ||
735 | case FB_VISUAL_PSEUDOCOLOR: | |
50a5503a | 736 | if (regno < win->variant.palette_sz) { |
ec549a0f BD |
737 | val = chan_to_field(red, &win->palette.r); |
738 | val |= chan_to_field(green, &win->palette.g); | |
739 | val |= chan_to_field(blue, &win->palette.b); | |
740 | ||
741 | s3c_fb_update_palette(sfb, win, regno, val); | |
742 | } | |
743 | ||
744 | break; | |
745 | ||
746 | default: | |
747 | return 1; /* unknown type */ | |
748 | } | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
753 | /** | |
754 | * s3c_fb_enable() - Set the state of the main LCD output | |
755 | * @sfb: The main framebuffer state. | |
756 | * @enable: The state to set. | |
757 | */ | |
758 | static void s3c_fb_enable(struct s3c_fb *sfb, int enable) | |
759 | { | |
760 | u32 vidcon0 = readl(sfb->regs + VIDCON0); | |
761 | ||
762 | if (enable) | |
763 | vidcon0 |= VIDCON0_ENVID | VIDCON0_ENVID_F; | |
764 | else { | |
765 | /* see the note in the framebuffer datasheet about | |
766 | * why you cannot take both of these bits down at the | |
767 | * same time. */ | |
768 | ||
769 | if (!(vidcon0 & VIDCON0_ENVID)) | |
770 | return; | |
771 | ||
772 | vidcon0 |= VIDCON0_ENVID; | |
773 | vidcon0 &= ~VIDCON0_ENVID_F; | |
774 | } | |
775 | ||
776 | writel(vidcon0, sfb->regs + VIDCON0); | |
777 | } | |
778 | ||
779 | /** | |
780 | * s3c_fb_blank() - blank or unblank the given window | |
781 | * @blank_mode: The blank state from FB_BLANK_* | |
782 | * @info: The framebuffer to blank. | |
783 | * | |
784 | * Framebuffer layer request to change the power state. | |
785 | */ | |
786 | static int s3c_fb_blank(int blank_mode, struct fb_info *info) | |
787 | { | |
788 | struct s3c_fb_win *win = info->par; | |
789 | struct s3c_fb *sfb = win->parent; | |
790 | unsigned int index = win->index; | |
791 | u32 wincon; | |
792 | ||
793 | dev_dbg(sfb->dev, "blank mode %d\n", blank_mode); | |
794 | ||
c4bb6ffa | 795 | wincon = readl(sfb->regs + sfb->variant.wincon + (index * 4)); |
ec549a0f BD |
796 | |
797 | switch (blank_mode) { | |
798 | case FB_BLANK_POWERDOWN: | |
799 | wincon &= ~WINCONx_ENWIN; | |
800 | sfb->enabled &= ~(1 << index); | |
801 | /* fall through to FB_BLANK_NORMAL */ | |
802 | ||
803 | case FB_BLANK_NORMAL: | |
804 | /* disable the DMA and display 0x0 (black) */ | |
805 | writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0), | |
c4bb6ffa | 806 | sfb->regs + sfb->variant.winmap + (index * 4)); |
ec549a0f BD |
807 | break; |
808 | ||
809 | case FB_BLANK_UNBLANK: | |
c4bb6ffa | 810 | writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4)); |
ec549a0f BD |
811 | wincon |= WINCONx_ENWIN; |
812 | sfb->enabled |= (1 << index); | |
813 | break; | |
814 | ||
815 | case FB_BLANK_VSYNC_SUSPEND: | |
816 | case FB_BLANK_HSYNC_SUSPEND: | |
817 | default: | |
818 | return 1; | |
819 | } | |
820 | ||
c4bb6ffa | 821 | writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4)); |
ec549a0f BD |
822 | |
823 | /* Check the enabled state to see if we need to be running the | |
824 | * main LCD interface, as if there are no active windows then | |
825 | * it is highly likely that we also do not need to output | |
826 | * anything. | |
827 | */ | |
828 | ||
829 | /* We could do something like the following code, but the current | |
830 | * system of using framebuffer events means that we cannot make | |
831 | * the distinction between just window 0 being inactive and all | |
832 | * the windows being down. | |
833 | * | |
834 | * s3c_fb_enable(sfb, sfb->enabled ? 1 : 0); | |
835 | */ | |
836 | ||
837 | /* we're stuck with this until we can do something about overriding | |
838 | * the power control using the blanking event for a single fb. | |
839 | */ | |
ad04490a | 840 | if (index == sfb->pdata->default_win) |
ec549a0f BD |
841 | s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0); |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
067b226b PO |
846 | /** |
847 | * s3c_fb_pan_display() - Pan the display. | |
848 | * | |
849 | * Note that the offsets can be written to the device at any time, as their | |
850 | * values are latched at each vsync automatically. This also means that only | |
851 | * the last call to this function will have any effect on next vsync, but | |
852 | * there is no need to sleep waiting for it to prevent tearing. | |
853 | * | |
854 | * @var: The screen information to verify. | |
855 | * @info: The framebuffer device. | |
856 | */ | |
857 | static int s3c_fb_pan_display(struct fb_var_screeninfo *var, | |
858 | struct fb_info *info) | |
859 | { | |
860 | struct s3c_fb_win *win = info->par; | |
861 | struct s3c_fb *sfb = win->parent; | |
862 | void __iomem *buf = sfb->regs + win->index * 8; | |
863 | unsigned int start_boff, end_boff; | |
864 | ||
865 | /* Offset in bytes to the start of the displayed area */ | |
866 | start_boff = var->yoffset * info->fix.line_length; | |
867 | /* X offset depends on the current bpp */ | |
868 | if (info->var.bits_per_pixel >= 8) { | |
869 | start_boff += var->xoffset * (info->var.bits_per_pixel >> 3); | |
870 | } else { | |
871 | switch (info->var.bits_per_pixel) { | |
872 | case 4: | |
873 | start_boff += var->xoffset >> 1; | |
874 | break; | |
875 | case 2: | |
876 | start_boff += var->xoffset >> 2; | |
877 | break; | |
878 | case 1: | |
879 | start_boff += var->xoffset >> 3; | |
880 | break; | |
881 | default: | |
882 | dev_err(sfb->dev, "invalid bpp\n"); | |
883 | return -EINVAL; | |
884 | } | |
885 | } | |
886 | /* Offset in bytes to the end of the displayed area */ | |
887 | end_boff = start_boff + var->yres * info->fix.line_length; | |
888 | ||
889 | /* Temporarily turn off per-vsync update from shadow registers until | |
890 | * both start and end addresses are updated to prevent corruption */ | |
f5ec546f | 891 | shadow_protect_win(win, 1); |
067b226b PO |
892 | |
893 | writel(info->fix.smem_start + start_boff, buf + sfb->variant.buf_start); | |
894 | writel(info->fix.smem_start + end_boff, buf + sfb->variant.buf_end); | |
895 | ||
f5ec546f | 896 | shadow_protect_win(win, 0); |
067b226b PO |
897 | |
898 | return 0; | |
899 | } | |
900 | ||
efdc846d PO |
901 | /** |
902 | * s3c_fb_enable_irq() - enable framebuffer interrupts | |
903 | * @sfb: main hardware state | |
904 | */ | |
905 | static void s3c_fb_enable_irq(struct s3c_fb *sfb) | |
906 | { | |
907 | void __iomem *regs = sfb->regs; | |
908 | u32 irq_ctrl_reg; | |
909 | ||
910 | if (!test_and_set_bit(S3C_FB_VSYNC_IRQ_EN, &sfb->irq_flags)) { | |
911 | /* IRQ disabled, enable it */ | |
912 | irq_ctrl_reg = readl(regs + VIDINTCON0); | |
913 | ||
914 | irq_ctrl_reg |= VIDINTCON0_INT_ENABLE; | |
915 | irq_ctrl_reg |= VIDINTCON0_INT_FRAME; | |
916 | ||
917 | irq_ctrl_reg &= ~VIDINTCON0_FRAMESEL0_MASK; | |
918 | irq_ctrl_reg |= VIDINTCON0_FRAMESEL0_VSYNC; | |
919 | irq_ctrl_reg &= ~VIDINTCON0_FRAMESEL1_MASK; | |
920 | irq_ctrl_reg |= VIDINTCON0_FRAMESEL1_NONE; | |
921 | ||
922 | writel(irq_ctrl_reg, regs + VIDINTCON0); | |
923 | } | |
924 | } | |
925 | ||
926 | /** | |
927 | * s3c_fb_disable_irq() - disable framebuffer interrupts | |
928 | * @sfb: main hardware state | |
929 | */ | |
930 | static void s3c_fb_disable_irq(struct s3c_fb *sfb) | |
931 | { | |
932 | void __iomem *regs = sfb->regs; | |
933 | u32 irq_ctrl_reg; | |
934 | ||
935 | if (test_and_clear_bit(S3C_FB_VSYNC_IRQ_EN, &sfb->irq_flags)) { | |
936 | /* IRQ enabled, disable it */ | |
937 | irq_ctrl_reg = readl(regs + VIDINTCON0); | |
938 | ||
939 | irq_ctrl_reg &= ~VIDINTCON0_INT_FRAME; | |
940 | irq_ctrl_reg &= ~VIDINTCON0_INT_ENABLE; | |
941 | ||
942 | writel(irq_ctrl_reg, regs + VIDINTCON0); | |
943 | } | |
944 | } | |
945 | ||
946 | static irqreturn_t s3c_fb_irq(int irq, void *dev_id) | |
947 | { | |
948 | struct s3c_fb *sfb = dev_id; | |
949 | void __iomem *regs = sfb->regs; | |
950 | u32 irq_sts_reg; | |
951 | ||
b07f3bbe JH |
952 | spin_lock(&sfb->slock); |
953 | ||
efdc846d PO |
954 | irq_sts_reg = readl(regs + VIDINTCON1); |
955 | ||
956 | if (irq_sts_reg & VIDINTCON1_INT_FRAME) { | |
957 | ||
958 | /* VSYNC interrupt, accept it */ | |
959 | writel(VIDINTCON1_INT_FRAME, regs + VIDINTCON1); | |
960 | ||
961 | sfb->vsync_info.count++; | |
962 | wake_up_interruptible(&sfb->vsync_info.wait); | |
963 | } | |
964 | ||
965 | /* We only support waiting for VSYNC for now, so it's safe | |
966 | * to always disable irqs here. | |
967 | */ | |
968 | s3c_fb_disable_irq(sfb); | |
969 | ||
b07f3bbe | 970 | spin_unlock(&sfb->slock); |
efdc846d PO |
971 | return IRQ_HANDLED; |
972 | } | |
973 | ||
974 | /** | |
975 | * s3c_fb_wait_for_vsync() - sleep until next VSYNC interrupt or timeout | |
976 | * @sfb: main hardware state | |
977 | * @crtc: head index. | |
978 | */ | |
979 | static int s3c_fb_wait_for_vsync(struct s3c_fb *sfb, u32 crtc) | |
980 | { | |
981 | unsigned long count; | |
982 | int ret; | |
983 | ||
984 | if (crtc != 0) | |
985 | return -ENODEV; | |
986 | ||
987 | count = sfb->vsync_info.count; | |
988 | s3c_fb_enable_irq(sfb); | |
989 | ret = wait_event_interruptible_timeout(sfb->vsync_info.wait, | |
990 | count != sfb->vsync_info.count, | |
991 | msecs_to_jiffies(VSYNC_TIMEOUT_MSEC)); | |
992 | if (ret == 0) | |
993 | return -ETIMEDOUT; | |
994 | ||
995 | return 0; | |
996 | } | |
997 | ||
998 | static int s3c_fb_ioctl(struct fb_info *info, unsigned int cmd, | |
999 | unsigned long arg) | |
1000 | { | |
1001 | struct s3c_fb_win *win = info->par; | |
1002 | struct s3c_fb *sfb = win->parent; | |
1003 | int ret; | |
1004 | u32 crtc; | |
1005 | ||
1006 | switch (cmd) { | |
1007 | case FBIO_WAITFORVSYNC: | |
1008 | if (get_user(crtc, (u32 __user *)arg)) { | |
1009 | ret = -EFAULT; | |
1010 | break; | |
1011 | } | |
1012 | ||
1013 | ret = s3c_fb_wait_for_vsync(sfb, crtc); | |
1014 | break; | |
1015 | default: | |
1016 | ret = -ENOTTY; | |
1017 | } | |
1018 | ||
1019 | return ret; | |
1020 | } | |
1021 | ||
4959212c JH |
1022 | static int s3c_fb_open(struct fb_info *info, int user) |
1023 | { | |
1024 | struct s3c_fb_win *win = info->par; | |
1025 | struct s3c_fb *sfb = win->parent; | |
1026 | ||
1027 | pm_runtime_get_sync(sfb->dev); | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static int s3c_fb_release(struct fb_info *info, int user) | |
1033 | { | |
1034 | struct s3c_fb_win *win = info->par; | |
1035 | struct s3c_fb *sfb = win->parent; | |
1036 | ||
1037 | pm_runtime_put_sync(sfb->dev); | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
ec549a0f BD |
1042 | static struct fb_ops s3c_fb_ops = { |
1043 | .owner = THIS_MODULE, | |
4959212c JH |
1044 | .fb_open = s3c_fb_open, |
1045 | .fb_release = s3c_fb_release, | |
ec549a0f BD |
1046 | .fb_check_var = s3c_fb_check_var, |
1047 | .fb_set_par = s3c_fb_set_par, | |
1048 | .fb_blank = s3c_fb_blank, | |
1049 | .fb_setcolreg = s3c_fb_setcolreg, | |
1050 | .fb_fillrect = cfb_fillrect, | |
1051 | .fb_copyarea = cfb_copyarea, | |
1052 | .fb_imageblit = cfb_imageblit, | |
067b226b | 1053 | .fb_pan_display = s3c_fb_pan_display, |
efdc846d | 1054 | .fb_ioctl = s3c_fb_ioctl, |
ec549a0f BD |
1055 | }; |
1056 | ||
2bb567a3 MC |
1057 | /** |
1058 | * s3c_fb_missing_pixclock() - calculates pixel clock | |
1059 | * @mode: The video mode to change. | |
1060 | * | |
1061 | * Calculate the pixel clock when none has been given through platform data. | |
1062 | */ | |
1063 | static void __devinit s3c_fb_missing_pixclock(struct fb_videomode *mode) | |
1064 | { | |
1065 | u64 pixclk = 1000000000000ULL; | |
1066 | u32 div; | |
1067 | ||
1068 | div = mode->left_margin + mode->hsync_len + mode->right_margin + | |
1069 | mode->xres; | |
1070 | div *= mode->upper_margin + mode->vsync_len + mode->lower_margin + | |
1071 | mode->yres; | |
1072 | div *= mode->refresh ? : 60; | |
1073 | ||
1074 | do_div(pixclk, div); | |
1075 | ||
1076 | mode->pixclock = pixclk; | |
1077 | } | |
1078 | ||
ec549a0f BD |
1079 | /** |
1080 | * s3c_fb_alloc_memory() - allocate display memory for framebuffer window | |
1081 | * @sfb: The base resources for the hardware. | |
1082 | * @win: The window to initialise memory for. | |
1083 | * | |
1084 | * Allocate memory for the given framebuffer. | |
1085 | */ | |
1086 | static int __devinit s3c_fb_alloc_memory(struct s3c_fb *sfb, | |
1087 | struct s3c_fb_win *win) | |
1088 | { | |
1089 | struct s3c_fb_pd_win *windata = win->windata; | |
1090 | unsigned int real_size, virt_size, size; | |
1091 | struct fb_info *fbi = win->fbinfo; | |
1092 | dma_addr_t map_dma; | |
1093 | ||
1094 | dev_dbg(sfb->dev, "allocating memory for display\n"); | |
1095 | ||
1096 | real_size = windata->win_mode.xres * windata->win_mode.yres; | |
1097 | virt_size = windata->virtual_x * windata->virtual_y; | |
1098 | ||
1099 | dev_dbg(sfb->dev, "real_size=%u (%u.%u), virt_size=%u (%u.%u)\n", | |
1100 | real_size, windata->win_mode.xres, windata->win_mode.yres, | |
1101 | virt_size, windata->virtual_x, windata->virtual_y); | |
1102 | ||
1103 | size = (real_size > virt_size) ? real_size : virt_size; | |
1104 | size *= (windata->max_bpp > 16) ? 32 : windata->max_bpp; | |
1105 | size /= 8; | |
1106 | ||
1107 | fbi->fix.smem_len = size; | |
1108 | size = PAGE_ALIGN(size); | |
1109 | ||
1110 | dev_dbg(sfb->dev, "want %u bytes for window\n", size); | |
1111 | ||
1112 | fbi->screen_base = dma_alloc_writecombine(sfb->dev, size, | |
1113 | &map_dma, GFP_KERNEL); | |
1114 | if (!fbi->screen_base) | |
1115 | return -ENOMEM; | |
1116 | ||
1117 | dev_dbg(sfb->dev, "mapped %x to %p\n", | |
1118 | (unsigned int)map_dma, fbi->screen_base); | |
1119 | ||
1120 | memset(fbi->screen_base, 0x0, size); | |
1121 | fbi->fix.smem_start = map_dma; | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | /** | |
1127 | * s3c_fb_free_memory() - free the display memory for the given window | |
1128 | * @sfb: The base resources for the hardware. | |
1129 | * @win: The window to free the display memory for. | |
1130 | * | |
1131 | * Free the display memory allocated by s3c_fb_alloc_memory(). | |
1132 | */ | |
1133 | static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win) | |
1134 | { | |
1135 | struct fb_info *fbi = win->fbinfo; | |
1136 | ||
cd7d7e02 PO |
1137 | if (fbi->screen_base) |
1138 | dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len), | |
ec549a0f BD |
1139 | fbi->screen_base, fbi->fix.smem_start); |
1140 | } | |
1141 | ||
1142 | /** | |
1143 | * s3c_fb_release_win() - release resources for a framebuffer window. | |
1144 | * @win: The window to cleanup the resources for. | |
1145 | * | |
1146 | * Release the resources that where claimed for the hardware window, | |
1147 | * such as the framebuffer instance and any memory claimed for it. | |
1148 | */ | |
1149 | static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win) | |
1150 | { | |
04ab9ef9 PO |
1151 | u32 data; |
1152 | ||
ddc518d9 | 1153 | if (win->fbinfo) { |
04ab9ef9 PO |
1154 | if (sfb->variant.has_shadowcon) { |
1155 | data = readl(sfb->regs + SHADOWCON); | |
1156 | data &= ~SHADOWCON_CHx_ENABLE(win->index); | |
1157 | data &= ~SHADOWCON_CHx_LOCAL_ENABLE(win->index); | |
1158 | writel(data, sfb->regs + SHADOWCON); | |
1159 | } | |
ddc518d9 | 1160 | unregister_framebuffer(win->fbinfo); |
cd7d7e02 PO |
1161 | if (win->fbinfo->cmap.len) |
1162 | fb_dealloc_cmap(&win->fbinfo->cmap); | |
ddc518d9 KH |
1163 | s3c_fb_free_memory(sfb, win); |
1164 | framebuffer_release(win->fbinfo); | |
1165 | } | |
ec549a0f BD |
1166 | } |
1167 | ||
1168 | /** | |
1169 | * s3c_fb_probe_win() - register an hardware window | |
1170 | * @sfb: The base resources for the hardware | |
50a5503a | 1171 | * @variant: The variant information for this window. |
ec549a0f BD |
1172 | * @res: Pointer to where to place the resultant window. |
1173 | * | |
1174 | * Allocate and do the basic initialisation for one of the hardware's graphics | |
1175 | * windows. | |
1176 | */ | |
1177 | static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, | |
50a5503a | 1178 | struct s3c_fb_win_variant *variant, |
ec549a0f BD |
1179 | struct s3c_fb_win **res) |
1180 | { | |
1181 | struct fb_var_screeninfo *var; | |
1182 | struct fb_videomode *initmode; | |
1183 | struct s3c_fb_pd_win *windata; | |
1184 | struct s3c_fb_win *win; | |
1185 | struct fb_info *fbinfo; | |
1186 | int palette_size; | |
1187 | int ret; | |
1188 | ||
c4bb6ffa | 1189 | dev_dbg(sfb->dev, "probing window %d, variant %p\n", win_no, variant); |
ec549a0f | 1190 | |
efdc846d PO |
1191 | init_waitqueue_head(&sfb->vsync_info.wait); |
1192 | ||
50a5503a | 1193 | palette_size = variant->palette_sz * 4; |
ec549a0f BD |
1194 | |
1195 | fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) + | |
1196 | palette_size * sizeof(u32), sfb->dev); | |
1197 | if (!fbinfo) { | |
1198 | dev_err(sfb->dev, "failed to allocate framebuffer\n"); | |
1199 | return -ENOENT; | |
1200 | } | |
1201 | ||
1202 | windata = sfb->pdata->win[win_no]; | |
1203 | initmode = &windata->win_mode; | |
1204 | ||
1205 | WARN_ON(windata->max_bpp == 0); | |
1206 | WARN_ON(windata->win_mode.xres == 0); | |
1207 | WARN_ON(windata->win_mode.yres == 0); | |
1208 | ||
1209 | win = fbinfo->par; | |
cd7d7e02 | 1210 | *res = win; |
ec549a0f | 1211 | var = &fbinfo->var; |
50a5503a | 1212 | win->variant = *variant; |
ec549a0f BD |
1213 | win->fbinfo = fbinfo; |
1214 | win->parent = sfb; | |
1215 | win->windata = windata; | |
1216 | win->index = win_no; | |
1217 | win->palette_buffer = (u32 *)(win + 1); | |
1218 | ||
1219 | ret = s3c_fb_alloc_memory(sfb, win); | |
1220 | if (ret) { | |
1221 | dev_err(sfb->dev, "failed to allocate display memory\n"); | |
ddc518d9 | 1222 | return ret; |
ec549a0f BD |
1223 | } |
1224 | ||
1225 | /* setup the r/b/g positions for the window's palette */ | |
bc2da1b6 BD |
1226 | if (win->variant.palette_16bpp) { |
1227 | /* Set RGB 5:6:5 as default */ | |
1228 | win->palette.r.offset = 11; | |
1229 | win->palette.r.length = 5; | |
1230 | win->palette.g.offset = 5; | |
1231 | win->palette.g.length = 6; | |
1232 | win->palette.b.offset = 0; | |
1233 | win->palette.b.length = 5; | |
1234 | ||
1235 | } else { | |
1236 | /* Set 8bpp or 8bpp and 1bit alpha */ | |
1237 | win->palette.r.offset = 16; | |
1238 | win->palette.r.length = 8; | |
1239 | win->palette.g.offset = 8; | |
1240 | win->palette.g.length = 8; | |
1241 | win->palette.b.offset = 0; | |
1242 | win->palette.b.length = 8; | |
1243 | } | |
ec549a0f BD |
1244 | |
1245 | /* setup the initial video mode from the window */ | |
1246 | fb_videomode_to_var(&fbinfo->var, initmode); | |
1247 | ||
1248 | fbinfo->fix.type = FB_TYPE_PACKED_PIXELS; | |
1249 | fbinfo->fix.accel = FB_ACCEL_NONE; | |
1250 | fbinfo->var.activate = FB_ACTIVATE_NOW; | |
1251 | fbinfo->var.vmode = FB_VMODE_NONINTERLACED; | |
1252 | fbinfo->var.bits_per_pixel = windata->default_bpp; | |
1253 | fbinfo->fbops = &s3c_fb_ops; | |
1254 | fbinfo->flags = FBINFO_FLAG_DEFAULT; | |
1255 | fbinfo->pseudo_palette = &win->pseudo_palette; | |
1256 | ||
1257 | /* prepare to actually start the framebuffer */ | |
1258 | ||
1259 | ret = s3c_fb_check_var(&fbinfo->var, fbinfo); | |
1260 | if (ret < 0) { | |
1261 | dev_err(sfb->dev, "check_var failed on initial video params\n"); | |
ddc518d9 | 1262 | return ret; |
ec549a0f BD |
1263 | } |
1264 | ||
1265 | /* create initial colour map */ | |
1266 | ||
50a5503a | 1267 | ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1); |
ec549a0f BD |
1268 | if (ret == 0) |
1269 | fb_set_cmap(&fbinfo->cmap, fbinfo); | |
1270 | else | |
1271 | dev_err(sfb->dev, "failed to allocate fb cmap\n"); | |
1272 | ||
1273 | s3c_fb_set_par(fbinfo); | |
1274 | ||
1275 | dev_dbg(sfb->dev, "about to register framebuffer\n"); | |
1276 | ||
1277 | /* run the check_var and set_par on our configuration. */ | |
1278 | ||
1279 | ret = register_framebuffer(fbinfo); | |
1280 | if (ret < 0) { | |
1281 | dev_err(sfb->dev, "failed to register framebuffer\n"); | |
ddc518d9 | 1282 | return ret; |
ec549a0f BD |
1283 | } |
1284 | ||
ec549a0f BD |
1285 | dev_info(sfb->dev, "window %d: fb %s\n", win_no, fbinfo->fix.id); |
1286 | ||
1287 | return 0; | |
ec549a0f BD |
1288 | } |
1289 | ||
1290 | /** | |
1291 | * s3c_fb_clear_win() - clear hardware window registers. | |
1292 | * @sfb: The base resources for the hardware. | |
1293 | * @win: The window to process. | |
1294 | * | |
1295 | * Reset the specific window registers to a known state. | |
1296 | */ | |
1297 | static void s3c_fb_clear_win(struct s3c_fb *sfb, int win) | |
1298 | { | |
1299 | void __iomem *regs = sfb->regs; | |
a8bdabca | 1300 | u32 reg; |
ec549a0f | 1301 | |
c4bb6ffa BD |
1302 | writel(0, regs + sfb->variant.wincon + (win * 4)); |
1303 | writel(0, regs + VIDOSD_A(win, sfb->variant)); | |
1304 | writel(0, regs + VIDOSD_B(win, sfb->variant)); | |
1305 | writel(0, regs + VIDOSD_C(win, sfb->variant)); | |
a8bdabca PO |
1306 | reg = readl(regs + SHADOWCON); |
1307 | writel(reg & ~SHADOWCON_WINx_PROTECT(win), regs + SHADOWCON); | |
ec549a0f BD |
1308 | } |
1309 | ||
1310 | static int __devinit s3c_fb_probe(struct platform_device *pdev) | |
1311 | { | |
b73a21fc | 1312 | const struct platform_device_id *platid; |
50a5503a | 1313 | struct s3c_fb_driverdata *fbdrv; |
ec549a0f BD |
1314 | struct device *dev = &pdev->dev; |
1315 | struct s3c_fb_platdata *pd; | |
1316 | struct s3c_fb *sfb; | |
1317 | struct resource *res; | |
1318 | int win; | |
1319 | int ret = 0; | |
1320 | ||
b73a21fc JH |
1321 | platid = platform_get_device_id(pdev); |
1322 | fbdrv = (struct s3c_fb_driverdata *)platid->driver_data; | |
50a5503a BD |
1323 | |
1324 | if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) { | |
1325 | dev_err(dev, "too many windows, cannot attach\n"); | |
1326 | return -EINVAL; | |
1327 | } | |
1328 | ||
ec549a0f BD |
1329 | pd = pdev->dev.platform_data; |
1330 | if (!pd) { | |
1331 | dev_err(dev, "no platform data specified\n"); | |
1332 | return -EINVAL; | |
1333 | } | |
1334 | ||
1335 | sfb = kzalloc(sizeof(struct s3c_fb), GFP_KERNEL); | |
1336 | if (!sfb) { | |
1337 | dev_err(dev, "no memory for framebuffers\n"); | |
1338 | return -ENOMEM; | |
1339 | } | |
1340 | ||
c4bb6ffa BD |
1341 | dev_dbg(dev, "allocate new framebuffer %p\n", sfb); |
1342 | ||
ec549a0f BD |
1343 | sfb->dev = dev; |
1344 | sfb->pdata = pd; | |
50a5503a | 1345 | sfb->variant = fbdrv->variant; |
ec549a0f | 1346 | |
b07f3bbe JH |
1347 | spin_lock_init(&sfb->slock); |
1348 | ||
ec549a0f BD |
1349 | sfb->bus_clk = clk_get(dev, "lcd"); |
1350 | if (IS_ERR(sfb->bus_clk)) { | |
1351 | dev_err(dev, "failed to get bus clock\n"); | |
942b8d05 | 1352 | ret = PTR_ERR(sfb->bus_clk); |
ec549a0f BD |
1353 | goto err_sfb; |
1354 | } | |
1355 | ||
1356 | clk_enable(sfb->bus_clk); | |
1357 | ||
4959212c JH |
1358 | pm_runtime_enable(sfb->dev); |
1359 | ||
ec549a0f BD |
1360 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1361 | if (!res) { | |
1362 | dev_err(dev, "failed to find registers\n"); | |
1363 | ret = -ENOENT; | |
1364 | goto err_clk; | |
1365 | } | |
1366 | ||
1367 | sfb->regs_res = request_mem_region(res->start, resource_size(res), | |
1368 | dev_name(dev)); | |
1369 | if (!sfb->regs_res) { | |
1370 | dev_err(dev, "failed to claim register region\n"); | |
1371 | ret = -ENOENT; | |
1372 | goto err_clk; | |
1373 | } | |
1374 | ||
1375 | sfb->regs = ioremap(res->start, resource_size(res)); | |
1376 | if (!sfb->regs) { | |
1377 | dev_err(dev, "failed to map registers\n"); | |
1378 | ret = -ENXIO; | |
1379 | goto err_req_region; | |
1380 | } | |
1381 | ||
efdc846d PO |
1382 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
1383 | if (!res) { | |
1384 | dev_err(dev, "failed to acquire irq resource\n"); | |
1385 | ret = -ENOENT; | |
1386 | goto err_ioremap; | |
1387 | } | |
1388 | sfb->irq_no = res->start; | |
1389 | ret = request_irq(sfb->irq_no, s3c_fb_irq, | |
1390 | 0, "s3c_fb", sfb); | |
1391 | if (ret) { | |
1392 | dev_err(dev, "irq request failed\n"); | |
1393 | goto err_ioremap; | |
1394 | } | |
1395 | ||
ec549a0f BD |
1396 | dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs); |
1397 | ||
4959212c JH |
1398 | platform_set_drvdata(pdev, sfb); |
1399 | pm_runtime_get_sync(sfb->dev); | |
1400 | ||
ec549a0f BD |
1401 | /* setup gpio and output polarity controls */ |
1402 | ||
1403 | pd->setup_gpio(); | |
1404 | ||
1405 | writel(pd->vidcon1, sfb->regs + VIDCON1); | |
1406 | ||
1407 | /* zero all windows before we do anything */ | |
1408 | ||
50a5503a | 1409 | for (win = 0; win < fbdrv->variant.nr_windows; win++) |
ec549a0f BD |
1410 | s3c_fb_clear_win(sfb, win); |
1411 | ||
94947037 | 1412 | /* initialise colour key controls */ |
50a5503a | 1413 | for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) { |
c4bb6ffa BD |
1414 | void __iomem *regs = sfb->regs + sfb->variant.keycon; |
1415 | ||
1416 | regs += (win * 8); | |
1417 | writel(0xffffff, regs + WKEYCON0); | |
1418 | writel(0xffffff, regs + WKEYCON1); | |
94947037 BD |
1419 | } |
1420 | ||
ec549a0f BD |
1421 | /* we have the register setup, start allocating framebuffers */ |
1422 | ||
50a5503a | 1423 | for (win = 0; win < fbdrv->variant.nr_windows; win++) { |
ec549a0f BD |
1424 | if (!pd->win[win]) |
1425 | continue; | |
1426 | ||
2bb567a3 MC |
1427 | if (!pd->win[win]->win_mode.pixclock) |
1428 | s3c_fb_missing_pixclock(&pd->win[win]->win_mode); | |
1429 | ||
50a5503a BD |
1430 | ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win], |
1431 | &sfb->windows[win]); | |
ec549a0f BD |
1432 | if (ret < 0) { |
1433 | dev_err(dev, "failed to create window %d\n", win); | |
1434 | for (; win >= 0; win--) | |
1435 | s3c_fb_release_win(sfb, sfb->windows[win]); | |
efdc846d | 1436 | goto err_irq; |
ec549a0f BD |
1437 | } |
1438 | } | |
1439 | ||
1440 | platform_set_drvdata(pdev, sfb); | |
4959212c | 1441 | pm_runtime_put_sync(sfb->dev); |
ec549a0f BD |
1442 | |
1443 | return 0; | |
1444 | ||
efdc846d PO |
1445 | err_irq: |
1446 | free_irq(sfb->irq_no, sfb); | |
1447 | ||
ec549a0f BD |
1448 | err_ioremap: |
1449 | iounmap(sfb->regs); | |
1450 | ||
1451 | err_req_region: | |
1452 | release_resource(sfb->regs_res); | |
1453 | kfree(sfb->regs_res); | |
1454 | ||
1455 | err_clk: | |
1456 | clk_disable(sfb->bus_clk); | |
1457 | clk_put(sfb->bus_clk); | |
1458 | ||
1459 | err_sfb: | |
1460 | kfree(sfb); | |
1461 | return ret; | |
1462 | } | |
1463 | ||
1464 | /** | |
1465 | * s3c_fb_remove() - Cleanup on module finalisation | |
1466 | * @pdev: The platform device we are bound to. | |
1467 | * | |
1468 | * Shutdown and then release all the resources that the driver allocated | |
1469 | * on initialisation. | |
1470 | */ | |
1471 | static int __devexit s3c_fb_remove(struct platform_device *pdev) | |
1472 | { | |
1473 | struct s3c_fb *sfb = platform_get_drvdata(pdev); | |
1474 | int win; | |
1475 | ||
4959212c JH |
1476 | pm_runtime_get_sync(sfb->dev); |
1477 | ||
c42b110c | 1478 | for (win = 0; win < S3C_FB_MAX_WIN; win++) |
17663e59 MS |
1479 | if (sfb->windows[win]) |
1480 | s3c_fb_release_win(sfb, sfb->windows[win]); | |
ec549a0f | 1481 | |
efdc846d PO |
1482 | free_irq(sfb->irq_no, sfb); |
1483 | ||
ec549a0f BD |
1484 | iounmap(sfb->regs); |
1485 | ||
1486 | clk_disable(sfb->bus_clk); | |
1487 | clk_put(sfb->bus_clk); | |
1488 | ||
1489 | release_resource(sfb->regs_res); | |
1490 | kfree(sfb->regs_res); | |
1491 | ||
1492 | kfree(sfb); | |
1493 | ||
4959212c JH |
1494 | pm_runtime_put_sync(sfb->dev); |
1495 | pm_runtime_disable(sfb->dev); | |
1496 | ||
ec549a0f BD |
1497 | return 0; |
1498 | } | |
1499 | ||
1500 | #ifdef CONFIG_PM | |
4959212c JH |
1501 | static int s3c_fb_suspend(struct device *dev) |
1502 | { | |
1503 | struct platform_device *pdev = to_platform_device(dev); | |
1504 | struct s3c_fb *sfb = platform_get_drvdata(pdev); | |
1505 | struct s3c_fb_win *win; | |
1506 | int win_no; | |
1507 | ||
1508 | for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) { | |
1509 | win = sfb->windows[win_no]; | |
1510 | if (!win) | |
1511 | continue; | |
1512 | ||
1513 | /* use the blank function to push into power-down */ | |
1514 | s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo); | |
1515 | } | |
1516 | ||
1517 | clk_disable(sfb->bus_clk); | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | static int s3c_fb_resume(struct device *dev) | |
1522 | { | |
1523 | struct platform_device *pdev = to_platform_device(dev); | |
1524 | struct s3c_fb *sfb = platform_get_drvdata(pdev); | |
1525 | struct s3c_fb_platdata *pd = sfb->pdata; | |
1526 | struct s3c_fb_win *win; | |
1527 | int win_no; | |
1528 | ||
1529 | clk_enable(sfb->bus_clk); | |
1530 | ||
1531 | /* setup registers */ | |
1532 | writel(pd->vidcon1, sfb->regs + VIDCON1); | |
1533 | ||
1534 | /* zero all windows before we do anything */ | |
1535 | for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++) | |
1536 | s3c_fb_clear_win(sfb, win_no); | |
1537 | ||
1538 | for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) { | |
1539 | void __iomem *regs = sfb->regs + sfb->variant.keycon; | |
1540 | ||
1541 | regs += (win_no * 8); | |
1542 | writel(0xffffff, regs + WKEYCON0); | |
1543 | writel(0xffffff, regs + WKEYCON1); | |
1544 | } | |
1545 | ||
1546 | /* restore framebuffers */ | |
1547 | for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) { | |
1548 | win = sfb->windows[win_no]; | |
1549 | if (!win) | |
1550 | continue; | |
1551 | ||
1552 | dev_dbg(&pdev->dev, "resuming window %d\n", win_no); | |
1553 | s3c_fb_set_par(win->fbinfo); | |
1554 | } | |
1555 | ||
1556 | return 0; | |
1557 | } | |
1558 | ||
0d60b281 | 1559 | static int s3c_fb_runtime_suspend(struct device *dev) |
ec549a0f | 1560 | { |
4959212c | 1561 | struct platform_device *pdev = to_platform_device(dev); |
ec549a0f BD |
1562 | struct s3c_fb *sfb = platform_get_drvdata(pdev); |
1563 | struct s3c_fb_win *win; | |
1564 | int win_no; | |
1565 | ||
c42b110c | 1566 | for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) { |
ec549a0f BD |
1567 | win = sfb->windows[win_no]; |
1568 | if (!win) | |
1569 | continue; | |
1570 | ||
1571 | /* use the blank function to push into power-down */ | |
1572 | s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo); | |
1573 | } | |
1574 | ||
1575 | clk_disable(sfb->bus_clk); | |
1576 | return 0; | |
1577 | } | |
1578 | ||
0d60b281 | 1579 | static int s3c_fb_runtime_resume(struct device *dev) |
ec549a0f | 1580 | { |
4959212c | 1581 | struct platform_device *pdev = to_platform_device(dev); |
ec549a0f | 1582 | struct s3c_fb *sfb = platform_get_drvdata(pdev); |
17663e59 | 1583 | struct s3c_fb_platdata *pd = sfb->pdata; |
ec549a0f BD |
1584 | struct s3c_fb_win *win; |
1585 | int win_no; | |
1586 | ||
1587 | clk_enable(sfb->bus_clk); | |
1588 | ||
17663e59 MS |
1589 | /* setup registers */ |
1590 | writel(pd->vidcon1, sfb->regs + VIDCON1); | |
1591 | ||
1592 | /* zero all windows before we do anything */ | |
50a5503a | 1593 | for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++) |
17663e59 MS |
1594 | s3c_fb_clear_win(sfb, win_no); |
1595 | ||
50a5503a | 1596 | for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) { |
c4bb6ffa BD |
1597 | void __iomem *regs = sfb->regs + sfb->variant.keycon; |
1598 | ||
1599 | regs += (win_no * 8); | |
1600 | writel(0xffffff, regs + WKEYCON0); | |
1601 | writel(0xffffff, regs + WKEYCON1); | |
94947037 BD |
1602 | } |
1603 | ||
17663e59 | 1604 | /* restore framebuffers */ |
ec549a0f BD |
1605 | for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) { |
1606 | win = sfb->windows[win_no]; | |
1607 | if (!win) | |
1608 | continue; | |
1609 | ||
1610 | dev_dbg(&pdev->dev, "resuming window %d\n", win_no); | |
1611 | s3c_fb_set_par(win->fbinfo); | |
1612 | } | |
1613 | ||
1614 | return 0; | |
1615 | } | |
4959212c | 1616 | |
ec549a0f BD |
1617 | #else |
1618 | #define s3c_fb_suspend NULL | |
1619 | #define s3c_fb_resume NULL | |
4959212c JH |
1620 | #define s3c_fb_runtime_suspend NULL |
1621 | #define s3c_fb_runtime_resume NULL | |
ec549a0f BD |
1622 | #endif |
1623 | ||
50a5503a BD |
1624 | |
1625 | #define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4)) | |
1626 | #define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8)) | |
1627 | ||
8cfdcb23 | 1628 | static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] = { |
50a5503a BD |
1629 | [0] = { |
1630 | .has_osd_c = 1, | |
f676ec2a | 1631 | .osd_size_off = 0x8, |
50a5503a BD |
1632 | .palette_sz = 256, |
1633 | .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24), | |
1634 | }, | |
1635 | [1] = { | |
1636 | .has_osd_c = 1, | |
1637 | .has_osd_d = 1, | |
f676ec2a PO |
1638 | .osd_size_off = 0x12, |
1639 | .has_osd_alpha = 1, | |
50a5503a BD |
1640 | .palette_sz = 256, |
1641 | .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | | |
1642 | VALID_BPP(18) | VALID_BPP(19) | | |
1643 | VALID_BPP(24) | VALID_BPP(25)), | |
1644 | }, | |
1645 | [2] = { | |
1646 | .has_osd_c = 1, | |
1647 | .has_osd_d = 1, | |
f676ec2a PO |
1648 | .osd_size_off = 0x12, |
1649 | .has_osd_alpha = 1, | |
50a5503a BD |
1650 | .palette_sz = 16, |
1651 | .palette_16bpp = 1, | |
1652 | .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | | |
1653 | VALID_BPP(18) | VALID_BPP(19) | | |
1654 | VALID_BPP(24) | VALID_BPP(25)), | |
1655 | }, | |
1656 | [3] = { | |
1657 | .has_osd_c = 1, | |
f676ec2a | 1658 | .has_osd_alpha = 1, |
50a5503a BD |
1659 | .palette_sz = 16, |
1660 | .palette_16bpp = 1, | |
1661 | .valid_bpp = (VALID_BPP124 | VALID_BPP(16) | | |
1662 | VALID_BPP(18) | VALID_BPP(19) | | |
1663 | VALID_BPP(24) | VALID_BPP(25)), | |
1664 | }, | |
1665 | [4] = { | |
1666 | .has_osd_c = 1, | |
f676ec2a | 1667 | .has_osd_alpha = 1, |
50a5503a BD |
1668 | .palette_sz = 4, |
1669 | .palette_16bpp = 1, | |
1670 | .valid_bpp = (VALID_BPP(1) | VALID_BPP(2) | | |
1671 | VALID_BPP(16) | VALID_BPP(18) | | |
1672 | VALID_BPP(24) | VALID_BPP(25)), | |
1673 | }, | |
1674 | }; | |
1675 | ||
8cfdcb23 | 1676 | static struct s3c_fb_driverdata s3c_fb_data_64xx = { |
50a5503a BD |
1677 | .variant = { |
1678 | .nr_windows = 5, | |
c4bb6ffa BD |
1679 | .vidtcon = VIDTCON0, |
1680 | .wincon = WINCON(0), | |
1681 | .winmap = WINxMAP(0), | |
1682 | .keycon = WKEYCON, | |
1683 | .osd = VIDOSD_BASE, | |
1684 | .osd_stride = 16, | |
1685 | .buf_start = VIDW_BUF_START(0), | |
1686 | .buf_size = VIDW_BUF_SIZE(0), | |
1687 | .buf_end = VIDW_BUF_END(0), | |
50a5503a BD |
1688 | |
1689 | .palette = { | |
1690 | [0] = 0x400, | |
1691 | [1] = 0x800, | |
1692 | [2] = 0x300, | |
1693 | [3] = 0x320, | |
1694 | [4] = 0x340, | |
1695 | }, | |
067b226b PO |
1696 | |
1697 | .has_prtcon = 1, | |
50a5503a BD |
1698 | }, |
1699 | .win[0] = &s3c_fb_data_64xx_wins[0], | |
1700 | .win[1] = &s3c_fb_data_64xx_wins[1], | |
1701 | .win[2] = &s3c_fb_data_64xx_wins[2], | |
1702 | .win[3] = &s3c_fb_data_64xx_wins[3], | |
1703 | .win[4] = &s3c_fb_data_64xx_wins[4], | |
1704 | }; | |
1705 | ||
8cfdcb23 | 1706 | static struct s3c_fb_driverdata s3c_fb_data_s5pc100 = { |
4e591ac6 PO |
1707 | .variant = { |
1708 | .nr_windows = 5, | |
1709 | .vidtcon = VIDTCON0, | |
1710 | .wincon = WINCON(0), | |
1711 | .winmap = WINxMAP(0), | |
1712 | .keycon = WKEYCON, | |
1713 | .osd = VIDOSD_BASE, | |
1714 | .osd_stride = 16, | |
1715 | .buf_start = VIDW_BUF_START(0), | |
1716 | .buf_size = VIDW_BUF_SIZE(0), | |
1717 | .buf_end = VIDW_BUF_END(0), | |
1718 | ||
1719 | .palette = { | |
1720 | [0] = 0x2400, | |
1721 | [1] = 0x2800, | |
1722 | [2] = 0x2c00, | |
1723 | [3] = 0x3000, | |
1724 | [4] = 0x3400, | |
1725 | }, | |
067b226b PO |
1726 | |
1727 | .has_prtcon = 1, | |
4e591ac6 PO |
1728 | }, |
1729 | .win[0] = &s3c_fb_data_64xx_wins[0], | |
1730 | .win[1] = &s3c_fb_data_64xx_wins[1], | |
1731 | .win[2] = &s3c_fb_data_64xx_wins[2], | |
1732 | .win[3] = &s3c_fb_data_64xx_wins[3], | |
1733 | .win[4] = &s3c_fb_data_64xx_wins[4], | |
1734 | }; | |
1735 | ||
8cfdcb23 | 1736 | static struct s3c_fb_driverdata s3c_fb_data_s5pv210 = { |
50a5503a BD |
1737 | .variant = { |
1738 | .nr_windows = 5, | |
c4bb6ffa BD |
1739 | .vidtcon = VIDTCON0, |
1740 | .wincon = WINCON(0), | |
1741 | .winmap = WINxMAP(0), | |
1742 | .keycon = WKEYCON, | |
1743 | .osd = VIDOSD_BASE, | |
1744 | .osd_stride = 16, | |
1745 | .buf_start = VIDW_BUF_START(0), | |
1746 | .buf_size = VIDW_BUF_SIZE(0), | |
1747 | .buf_end = VIDW_BUF_END(0), | |
50a5503a BD |
1748 | |
1749 | .palette = { | |
1750 | [0] = 0x2400, | |
1751 | [1] = 0x2800, | |
1752 | [2] = 0x2c00, | |
1753 | [3] = 0x3000, | |
1754 | [4] = 0x3400, | |
1755 | }, | |
f5ec546f PO |
1756 | |
1757 | .has_shadowcon = 1, | |
50a5503a BD |
1758 | }, |
1759 | .win[0] = &s3c_fb_data_64xx_wins[0], | |
1760 | .win[1] = &s3c_fb_data_64xx_wins[1], | |
1761 | .win[2] = &s3c_fb_data_64xx_wins[2], | |
1762 | .win[3] = &s3c_fb_data_64xx_wins[3], | |
1763 | .win[4] = &s3c_fb_data_64xx_wins[4], | |
1764 | }; | |
1765 | ||
c4bb6ffa | 1766 | /* S3C2443/S3C2416 style hardware */ |
8cfdcb23 | 1767 | static struct s3c_fb_driverdata s3c_fb_data_s3c2443 = { |
c4bb6ffa BD |
1768 | .variant = { |
1769 | .nr_windows = 2, | |
1770 | .is_2443 = 1, | |
1771 | ||
1772 | .vidtcon = 0x08, | |
1773 | .wincon = 0x14, | |
1774 | .winmap = 0xd0, | |
1775 | .keycon = 0xb0, | |
1776 | .osd = 0x28, | |
1777 | .osd_stride = 12, | |
1778 | .buf_start = 0x64, | |
1779 | .buf_size = 0x94, | |
1780 | .buf_end = 0x7c, | |
1781 | ||
1782 | .palette = { | |
1783 | [0] = 0x400, | |
1784 | [1] = 0x800, | |
1785 | }, | |
1786 | }, | |
1787 | .win[0] = &(struct s3c_fb_win_variant) { | |
1788 | .palette_sz = 256, | |
1789 | .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24), | |
1790 | }, | |
1791 | .win[1] = &(struct s3c_fb_win_variant) { | |
1792 | .has_osd_c = 1, | |
f676ec2a | 1793 | .has_osd_alpha = 1, |
c4bb6ffa BD |
1794 | .palette_sz = 256, |
1795 | .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | | |
1796 | VALID_BPP(18) | VALID_BPP(19) | | |
1797 | VALID_BPP(24) | VALID_BPP(25) | | |
1798 | VALID_BPP(28)), | |
1799 | }, | |
1800 | }; | |
1801 | ||
50a5503a BD |
1802 | static struct platform_device_id s3c_fb_driver_ids[] = { |
1803 | { | |
1804 | .name = "s3c-fb", | |
1805 | .driver_data = (unsigned long)&s3c_fb_data_64xx, | |
1806 | }, { | |
4e591ac6 PO |
1807 | .name = "s5pc100-fb", |
1808 | .driver_data = (unsigned long)&s3c_fb_data_s5pc100, | |
1809 | }, { | |
1810 | .name = "s5pv210-fb", | |
1811 | .driver_data = (unsigned long)&s3c_fb_data_s5pv210, | |
c4bb6ffa BD |
1812 | }, { |
1813 | .name = "s3c2443-fb", | |
1814 | .driver_data = (unsigned long)&s3c_fb_data_s3c2443, | |
50a5503a BD |
1815 | }, |
1816 | {}, | |
1817 | }; | |
1818 | MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids); | |
1819 | ||
4959212c JH |
1820 | static const struct dev_pm_ops s3cfb_pm_ops = { |
1821 | .suspend = s3c_fb_suspend, | |
1822 | .resume = s3c_fb_resume, | |
1823 | .runtime_suspend = s3c_fb_runtime_suspend, | |
1824 | .runtime_resume = s3c_fb_runtime_resume, | |
1825 | }; | |
1826 | ||
ec549a0f BD |
1827 | static struct platform_driver s3c_fb_driver = { |
1828 | .probe = s3c_fb_probe, | |
3163eaba | 1829 | .remove = __devexit_p(s3c_fb_remove), |
50a5503a | 1830 | .id_table = s3c_fb_driver_ids, |
ec549a0f BD |
1831 | .driver = { |
1832 | .name = "s3c-fb", | |
1833 | .owner = THIS_MODULE, | |
4959212c | 1834 | .pm = &s3cfb_pm_ops, |
ec549a0f BD |
1835 | }, |
1836 | }; | |
1837 | ||
1838 | static int __init s3c_fb_init(void) | |
1839 | { | |
1840 | return platform_driver_register(&s3c_fb_driver); | |
1841 | } | |
1842 | ||
1843 | static void __exit s3c_fb_cleanup(void) | |
1844 | { | |
1845 | platform_driver_unregister(&s3c_fb_driver); | |
1846 | } | |
1847 | ||
1848 | module_init(s3c_fb_init); | |
1849 | module_exit(s3c_fb_cleanup); | |
1850 | ||
1851 | MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); | |
1852 | MODULE_DESCRIPTION("Samsung S3C SoC Framebuffer driver"); | |
1853 | MODULE_LICENSE("GPL"); | |
1854 | MODULE_ALIAS("platform:s3c-fb"); |