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43 | * has been replaced by using the platform device name to pick the correct | |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