]>
Commit | Line | Data |
---|---|---|
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> | |
24 | ||
25 | #include <mach/map.h> | |
c4bb6ffa | 26 | #include <plat/regs-fb-v4.h> |
ec549a0f BD |
27 | #include <plat/fb.h> |
28 | ||
29 | /* This driver will export a number of framebuffer interfaces depending | |
30 | * on the configuration passed in via the platform data. Each fb instance | |
31 | * maps to a hardware window. Currently there is no support for runtime | |
32 | * setting of the alpha-blending functions that each window has, so only | |
33 | * window 0 is actually useful. | |
34 | * | |
35 | * Window 0 is treated specially, it is used for the basis of the LCD | |
36 | * output timings and as the control for the output power-down state. | |
37 | */ | |
38 | ||
50a5503a BD |
39 | /* note, the previous use of <mach/regs-fb.h> to get platform specific data |
40 | * has been replaced by using the platform device name to pick the correct | |
41 | * configuration data for the system. | |
ec549a0f BD |
42 | */ |
43 | ||
44 | #ifdef CONFIG_FB_S3C_DEBUG_REGWRITE | |
45 | #undef writel | |
46 | #define writel(v, r) do { \ | |
47 | printk(KERN_DEBUG "%s: %08x => %p\n", __func__, (unsigned int)v, r); \ | |
48 | __raw_writel(v, r); } while(0) | |
49 | #endif /* FB_S3C_DEBUG_REGWRITE */ | |
50 | ||
51 | struct s3c_fb; | |
52 | ||
50a5503a BD |
53 | #define VALID_BPP(x) (1 << ((x) - 1)) |
54 | ||
c4bb6ffa BD |
55 | #define OSD_BASE(win, variant) ((variant).osd + ((win) * (variant).osd_stride)) |
56 | #define VIDOSD_A(win, variant) (OSD_BASE(win, variant) + 0x00) | |
57 | #define VIDOSD_B(win, variant) (OSD_BASE(win, variant) + 0x04) | |
58 | #define VIDOSD_C(win, variant) (OSD_BASE(win, variant) + 0x08) | |
59 | #define VIDOSD_D(win, variant) (OSD_BASE(win, variant) + 0x0C) | |
60 | ||
50a5503a BD |
61 | /** |
62 | * struct s3c_fb_variant - fb variant information | |
c4bb6ffa | 63 | * @is_2443: Set if S3C2443/S3C2416 style hardware. |
50a5503a | 64 | * @nr_windows: The number of windows. |
c4bb6ffa BD |
65 | * @vidtcon: The base for the VIDTCONx registers |
66 | * @wincon: The base for the WINxCON registers. | |
67 | * @winmap: The base for the WINxMAP registers. | |
68 | * @keycon: The abse for the WxKEYCON registers. | |
69 | * @buf_start: Offset of buffer start registers. | |
70 | * @buf_size: Offset of buffer size registers. | |
71 | * @buf_end: Offset of buffer end registers. | |
72 | * @osd: The base for the OSD registers. | |
50a5503a BD |
73 | * @palette: Address of palette memory, or 0 if none. |
74 | */ | |
75 | struct s3c_fb_variant { | |
c4bb6ffa | 76 | unsigned int is_2443:1; |
50a5503a | 77 | unsigned short nr_windows; |
c4bb6ffa BD |
78 | unsigned short vidtcon; |
79 | unsigned short wincon; | |
80 | unsigned short winmap; | |
81 | unsigned short keycon; | |
82 | unsigned short buf_start; | |
83 | unsigned short buf_end; | |
84 | unsigned short buf_size; | |
85 | unsigned short osd; | |
86 | unsigned short osd_stride; | |
50a5503a BD |
87 | unsigned short palette[S3C_FB_MAX_WIN]; |
88 | }; | |
89 | ||
90 | /** | |
91 | * struct s3c_fb_win_variant | |
92 | * @has_osd_c: Set if has OSD C register. | |
93 | * @has_osd_d: Set if has OSD D register. | |
94 | * @palette_sz: Size of palette in entries. | |
95 | * @palette_16bpp: Set if palette is 16bits wide. | |
96 | * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel. | |
97 | * | |
98 | * valid_bpp bit x is set if (x+1)BPP is supported. | |
99 | */ | |
100 | struct s3c_fb_win_variant { | |
101 | unsigned int has_osd_c:1; | |
102 | unsigned int has_osd_d:1; | |
103 | unsigned int palette_16bpp:1; | |
104 | unsigned short palette_sz; | |
105 | u32 valid_bpp; | |
106 | }; | |
107 | ||
108 | /** | |
109 | * struct s3c_fb_driverdata - per-device type driver data for init time. | |
110 | * @variant: The variant information for this driver. | |
111 | * @win: The window information for each window. | |
112 | */ | |
113 | struct s3c_fb_driverdata { | |
114 | struct s3c_fb_variant variant; | |
115 | struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN]; | |
116 | }; | |
117 | ||
ec549a0f BD |
118 | /** |
119 | * struct s3c_fb_win - per window private data for each framebuffer. | |
120 | * @windata: The platform data supplied for the window configuration. | |
121 | * @parent: The hardware that this window is part of. | |
122 | * @fbinfo: Pointer pack to the framebuffer info for this window. | |
50a5503a | 123 | * @varint: The variant information for this window. |
ec549a0f BD |
124 | * @palette_buffer: Buffer/cache to hold palette entries. |
125 | * @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/ | |
126 | * @index: The window number of this window. | |
127 | * @palette: The bitfields for changing r/g/b into a hardware palette entry. | |
128 | */ | |
129 | struct s3c_fb_win { | |
130 | struct s3c_fb_pd_win *windata; | |
131 | struct s3c_fb *parent; | |
132 | struct fb_info *fbinfo; | |
133 | struct s3c_fb_palette palette; | |
50a5503a | 134 | struct s3c_fb_win_variant variant; |
ec549a0f BD |
135 | |
136 | u32 *palette_buffer; | |
137 | u32 pseudo_palette[16]; | |
138 | unsigned int index; | |
139 | }; | |
140 | ||
141 | /** | |
142 | * struct s3c_fb - overall hardware state of the hardware | |
143 | * @dev: The device that we bound to, for printing, etc. | |
144 | * @regs_res: The resource we claimed for the IO registers. | |
145 | * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk. | |
146 | * @regs: The mapped hardware registers. | |
50a5503a | 147 | * @variant: Variant information for this hardware. |
ec549a0f BD |
148 | * @enabled: A bitmask of enabled hardware windows. |
149 | * @pdata: The platform configuration data passed with the device. | |
150 | * @windows: The hardware windows that have been claimed. | |
151 | */ | |
152 | struct s3c_fb { | |
153 | struct device *dev; | |
154 | struct resource *regs_res; | |
155 | struct clk *bus_clk; | |
156 | void __iomem *regs; | |
50a5503a | 157 | struct s3c_fb_variant variant; |
ec549a0f BD |
158 | |
159 | unsigned char enabled; | |
160 | ||
161 | struct s3c_fb_platdata *pdata; | |
162 | struct s3c_fb_win *windows[S3C_FB_MAX_WIN]; | |
163 | }; | |
164 | ||
165 | /** | |
50a5503a BD |
166 | * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode. |
167 | * @win: The device window. | |
168 | * @bpp: The bit depth. | |
ec549a0f | 169 | */ |
50a5503a | 170 | static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp) |
ec549a0f | 171 | { |
50a5503a | 172 | return win->variant.valid_bpp & VALID_BPP(bpp); |
ec549a0f BD |
173 | } |
174 | ||
175 | /** | |
176 | * s3c_fb_check_var() - framebuffer layer request to verify a given mode. | |
177 | * @var: The screen information to verify. | |
178 | * @info: The framebuffer device. | |
179 | * | |
180 | * Framebuffer layer call to verify the given information and allow us to | |
181 | * update various information depending on the hardware capabilities. | |
182 | */ | |
183 | static int s3c_fb_check_var(struct fb_var_screeninfo *var, | |
184 | struct fb_info *info) | |
185 | { | |
186 | struct s3c_fb_win *win = info->par; | |
187 | struct s3c_fb_pd_win *windata = win->windata; | |
188 | struct s3c_fb *sfb = win->parent; | |
189 | ||
190 | dev_dbg(sfb->dev, "checking parameters\n"); | |
191 | ||
192 | var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres); | |
193 | var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres); | |
194 | ||
50a5503a | 195 | if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) { |
ec549a0f BD |
196 | dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n", |
197 | win->index, var->bits_per_pixel); | |
198 | return -EINVAL; | |
199 | } | |
200 | ||
201 | /* always ensure these are zero, for drop through cases below */ | |
202 | var->transp.offset = 0; | |
203 | var->transp.length = 0; | |
204 | ||
205 | switch (var->bits_per_pixel) { | |
206 | case 1: | |
207 | case 2: | |
208 | case 4: | |
209 | case 8: | |
50a5503a | 210 | if (sfb->variant.palette[win->index] != 0) { |
ec549a0f BD |
211 | /* non palletised, A:1,R:2,G:3,B:2 mode */ |
212 | var->red.offset = 4; | |
213 | var->green.offset = 2; | |
214 | var->blue.offset = 0; | |
215 | var->red.length = 5; | |
216 | var->green.length = 3; | |
217 | var->blue.length = 2; | |
218 | var->transp.offset = 7; | |
219 | var->transp.length = 1; | |
220 | } else { | |
221 | var->red.offset = 0; | |
222 | var->red.length = var->bits_per_pixel; | |
223 | var->green = var->red; | |
224 | var->blue = var->red; | |
225 | } | |
226 | break; | |
227 | ||
228 | case 19: | |
229 | /* 666 with one bit alpha/transparency */ | |
230 | var->transp.offset = 18; | |
231 | var->transp.length = 1; | |
232 | case 18: | |
233 | var->bits_per_pixel = 32; | |
234 | ||
235 | /* 666 format */ | |
236 | var->red.offset = 12; | |
237 | var->green.offset = 6; | |
238 | var->blue.offset = 0; | |
239 | var->red.length = 6; | |
240 | var->green.length = 6; | |
241 | var->blue.length = 6; | |
242 | break; | |
243 | ||
244 | case 16: | |
245 | /* 16 bpp, 565 format */ | |
246 | var->red.offset = 11; | |
247 | var->green.offset = 5; | |
248 | var->blue.offset = 0; | |
249 | var->red.length = 5; | |
250 | var->green.length = 6; | |
251 | var->blue.length = 5; | |
252 | break; | |
253 | ||
254 | case 28: | |
255 | case 25: | |
256 | var->transp.length = var->bits_per_pixel - 24; | |
257 | var->transp.offset = 24; | |
258 | /* drop through */ | |
259 | case 24: | |
260 | /* our 24bpp is unpacked, so 32bpp */ | |
261 | var->bits_per_pixel = 32; | |
262 | case 32: | |
263 | var->red.offset = 16; | |
264 | var->red.length = 8; | |
265 | var->green.offset = 8; | |
266 | var->green.length = 8; | |
267 | var->blue.offset = 0; | |
268 | var->blue.length = 8; | |
269 | break; | |
270 | ||
271 | default: | |
272 | dev_err(sfb->dev, "invalid bpp\n"); | |
273 | } | |
274 | ||
275 | dev_dbg(sfb->dev, "%s: verified parameters\n", __func__); | |
276 | return 0; | |
277 | } | |
278 | ||
279 | /** | |
280 | * s3c_fb_calc_pixclk() - calculate the divider to create the pixel clock. | |
281 | * @sfb: The hardware state. | |
282 | * @pixclock: The pixel clock wanted, in picoseconds. | |
283 | * | |
284 | * Given the specified pixel clock, work out the necessary divider to get | |
285 | * close to the output frequency. | |
286 | */ | |
eb29a5cc | 287 | static int s3c_fb_calc_pixclk(struct s3c_fb *sfb, unsigned int pixclk) |
ec549a0f BD |
288 | { |
289 | unsigned long clk = clk_get_rate(sfb->bus_clk); | |
eb29a5cc | 290 | unsigned long long tmp; |
ec549a0f BD |
291 | unsigned int result; |
292 | ||
eb29a5cc MB |
293 | tmp = (unsigned long long)clk; |
294 | tmp *= pixclk; | |
295 | ||
296 | do_div(tmp, 1000000000UL); | |
297 | result = (unsigned int)tmp / 1000; | |
ec549a0f BD |
298 | |
299 | dev_dbg(sfb->dev, "pixclk=%u, clk=%lu, div=%d (%lu)\n", | |
300 | pixclk, clk, result, clk / result); | |
301 | ||
302 | return result; | |
303 | } | |
304 | ||
305 | /** | |
306 | * s3c_fb_align_word() - align pixel count to word boundary | |
307 | * @bpp: The number of bits per pixel | |
308 | * @pix: The value to be aligned. | |
309 | * | |
310 | * Align the given pixel count so that it will start on an 32bit word | |
311 | * boundary. | |
312 | */ | |
313 | static int s3c_fb_align_word(unsigned int bpp, unsigned int pix) | |
314 | { | |
315 | int pix_per_word; | |
316 | ||
317 | if (bpp > 16) | |
318 | return pix; | |
319 | ||
320 | pix_per_word = (8 * 32) / bpp; | |
321 | return ALIGN(pix, pix_per_word); | |
322 | } | |
323 | ||
324 | /** | |
325 | * s3c_fb_set_par() - framebuffer request to set new framebuffer state. | |
326 | * @info: The framebuffer to change. | |
327 | * | |
328 | * Framebuffer layer request to set a new mode for the specified framebuffer | |
329 | */ | |
330 | static int s3c_fb_set_par(struct fb_info *info) | |
331 | { | |
332 | struct fb_var_screeninfo *var = &info->var; | |
333 | struct s3c_fb_win *win = info->par; | |
334 | struct s3c_fb *sfb = win->parent; | |
335 | void __iomem *regs = sfb->regs; | |
c4bb6ffa | 336 | void __iomem *buf = regs; |
ec549a0f | 337 | int win_no = win->index; |
600ce1a0 | 338 | u32 osdc_data = 0; |
ec549a0f BD |
339 | u32 data; |
340 | u32 pagewidth; | |
341 | int clkdiv; | |
342 | ||
343 | dev_dbg(sfb->dev, "setting framebuffer parameters\n"); | |
344 | ||
345 | switch (var->bits_per_pixel) { | |
346 | case 32: | |
347 | case 24: | |
348 | case 16: | |
349 | case 12: | |
350 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
351 | break; | |
352 | case 8: | |
50a5503a | 353 | if (win->variant.palette_sz >= 256) |
ec549a0f BD |
354 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
355 | else | |
356 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
357 | break; | |
358 | case 1: | |
359 | info->fix.visual = FB_VISUAL_MONO01; | |
360 | break; | |
361 | default: | |
362 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
363 | break; | |
364 | } | |
365 | ||
366 | info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8; | |
367 | ||
368 | /* disable the window whilst we update it */ | |
369 | writel(0, regs + WINCON(win_no)); | |
370 | ||
ad04490a | 371 | /* use platform specified window as the basis for the lcd timings */ |
ec549a0f | 372 | |
ad04490a | 373 | if (win_no == sfb->pdata->default_win) { |
eb29a5cc | 374 | clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock); |
ec549a0f BD |
375 | |
376 | data = sfb->pdata->vidcon0; | |
377 | data &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR); | |
378 | ||
379 | if (clkdiv > 1) | |
380 | data |= VIDCON0_CLKVAL_F(clkdiv-1) | VIDCON0_CLKDIR; | |
381 | else | |
382 | data &= ~VIDCON0_CLKDIR; /* 1:1 clock */ | |
383 | ||
384 | /* write the timing data to the panel */ | |
385 | ||
c4bb6ffa BD |
386 | if (sfb->variant.is_2443) |
387 | data |= (1 << 5); | |
388 | ||
ec549a0f BD |
389 | data |= VIDCON0_ENVID | VIDCON0_ENVID_F; |
390 | writel(data, regs + VIDCON0); | |
391 | ||
392 | data = VIDTCON0_VBPD(var->upper_margin - 1) | | |
393 | VIDTCON0_VFPD(var->lower_margin - 1) | | |
394 | VIDTCON0_VSPW(var->vsync_len - 1); | |
395 | ||
c4bb6ffa | 396 | writel(data, regs + sfb->variant.vidtcon); |
ec549a0f BD |
397 | |
398 | data = VIDTCON1_HBPD(var->left_margin - 1) | | |
399 | VIDTCON1_HFPD(var->right_margin - 1) | | |
400 | VIDTCON1_HSPW(var->hsync_len - 1); | |
401 | ||
c4bb6ffa BD |
402 | /* VIDTCON1 */ |
403 | writel(data, regs + sfb->variant.vidtcon + 4); | |
ec549a0f BD |
404 | |
405 | data = VIDTCON2_LINEVAL(var->yres - 1) | | |
406 | VIDTCON2_HOZVAL(var->xres - 1); | |
c4bb6ffa | 407 | writel(data, regs +sfb->variant.vidtcon + 8 ); |
ec549a0f BD |
408 | } |
409 | ||
410 | /* write the buffer address */ | |
411 | ||
c4bb6ffa BD |
412 | /* start and end registers stride is 8 */ |
413 | buf = regs + win_no * 8; | |
414 | ||
415 | writel(info->fix.smem_start, buf + sfb->variant.buf_start); | |
ec549a0f BD |
416 | |
417 | data = info->fix.smem_start + info->fix.line_length * var->yres; | |
c4bb6ffa | 418 | writel(data, buf + sfb->variant.buf_end); |
ec549a0f BD |
419 | |
420 | pagewidth = (var->xres * var->bits_per_pixel) >> 3; | |
421 | data = VIDW_BUF_SIZE_OFFSET(info->fix.line_length - pagewidth) | | |
422 | VIDW_BUF_SIZE_PAGEWIDTH(pagewidth); | |
c4bb6ffa | 423 | writel(data, regs + sfb->variant.buf_size + (win_no * 4)); |
ec549a0f BD |
424 | |
425 | /* write 'OSD' registers to control position of framebuffer */ | |
426 | ||
427 | data = VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0); | |
c4bb6ffa | 428 | writel(data, regs + VIDOSD_A(win_no, sfb->variant)); |
ec549a0f BD |
429 | |
430 | data = VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var->bits_per_pixel, | |
431 | var->xres - 1)) | | |
432 | VIDOSDxB_BOTRIGHT_Y(var->yres - 1); | |
433 | ||
c4bb6ffa | 434 | writel(data, regs + VIDOSD_B(win_no, sfb->variant)); |
ec549a0f BD |
435 | |
436 | data = var->xres * var->yres; | |
39000d65 | 437 | |
39000d65 ID |
438 | osdc_data = VIDISD14C_ALPHA1_R(0xf) | |
439 | VIDISD14C_ALPHA1_G(0xf) | | |
440 | VIDISD14C_ALPHA1_B(0xf); | |
441 | ||
50a5503a | 442 | if (win->variant.has_osd_d) { |
c4bb6ffa BD |
443 | writel(data, regs + VIDOSD_D(win_no, sfb->variant)); |
444 | writel(osdc_data, regs + VIDOSD_C(win_no, sfb->variant)); | |
ec549a0f | 445 | } else |
c4bb6ffa | 446 | writel(data, regs + VIDOSD_C(win_no, sfb->variant)); |
ec549a0f BD |
447 | |
448 | data = WINCONx_ENWIN; | |
449 | ||
450 | /* note, since we have to round up the bits-per-pixel, we end up | |
451 | * relying on the bitfield information for r/g/b/a to work out | |
452 | * exactly which mode of operation is intended. */ | |
453 | ||
454 | switch (var->bits_per_pixel) { | |
455 | case 1: | |
456 | data |= WINCON0_BPPMODE_1BPP; | |
457 | data |= WINCONx_BITSWP; | |
458 | data |= WINCONx_BURSTLEN_4WORD; | |
459 | break; | |
460 | case 2: | |
461 | data |= WINCON0_BPPMODE_2BPP; | |
462 | data |= WINCONx_BITSWP; | |
463 | data |= WINCONx_BURSTLEN_8WORD; | |
464 | break; | |
465 | case 4: | |
466 | data |= WINCON0_BPPMODE_4BPP; | |
467 | data |= WINCONx_BITSWP; | |
468 | data |= WINCONx_BURSTLEN_8WORD; | |
469 | break; | |
470 | case 8: | |
471 | if (var->transp.length != 0) | |
472 | data |= WINCON1_BPPMODE_8BPP_1232; | |
473 | else | |
474 | data |= WINCON0_BPPMODE_8BPP_PALETTE; | |
475 | data |= WINCONx_BURSTLEN_8WORD; | |
476 | data |= WINCONx_BYTSWP; | |
477 | break; | |
478 | case 16: | |
479 | if (var->transp.length != 0) | |
480 | data |= WINCON1_BPPMODE_16BPP_A1555; | |
481 | else | |
482 | data |= WINCON0_BPPMODE_16BPP_565; | |
483 | data |= WINCONx_HAWSWP; | |
484 | data |= WINCONx_BURSTLEN_16WORD; | |
485 | break; | |
486 | case 24: | |
487 | case 32: | |
488 | if (var->red.length == 6) { | |
489 | if (var->transp.length != 0) | |
490 | data |= WINCON1_BPPMODE_19BPP_A1666; | |
491 | else | |
492 | data |= WINCON1_BPPMODE_18BPP_666; | |
39000d65 ID |
493 | } else if (var->transp.length == 1) |
494 | data |= WINCON1_BPPMODE_25BPP_A1888 | |
495 | | WINCON1_BLD_PIX; | |
496 | else if (var->transp.length == 4) | |
497 | data |= WINCON1_BPPMODE_28BPP_A4888 | |
498 | | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL; | |
ec549a0f BD |
499 | else |
500 | data |= WINCON0_BPPMODE_24BPP_888; | |
501 | ||
dc8498c0 | 502 | data |= WINCONx_WSWP; |
ec549a0f BD |
503 | data |= WINCONx_BURSTLEN_16WORD; |
504 | break; | |
505 | } | |
506 | ||
c4bb6ffa | 507 | /* Enable the colour keying for the window below this one */ |
39000d65 ID |
508 | if (win_no > 0) { |
509 | u32 keycon0_data = 0, keycon1_data = 0; | |
c4bb6ffa | 510 | void __iomem *keycon = regs + sfb->variant.keycon; |
39000d65 ID |
511 | |
512 | keycon0_data = ~(WxKEYCON0_KEYBL_EN | | |
513 | WxKEYCON0_KEYEN_F | | |
514 | WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0); | |
515 | ||
516 | keycon1_data = WxKEYCON1_COLVAL(0xffffff); | |
517 | ||
c4bb6ffa BD |
518 | keycon += (win_no - 1) * 8; |
519 | ||
520 | writel(keycon0_data, keycon + WKEYCON0); | |
521 | writel(keycon1_data, keycon + WKEYCON1); | |
39000d65 ID |
522 | } |
523 | ||
c4bb6ffa BD |
524 | writel(data, regs + sfb->variant.wincon + (win_no * 4)); |
525 | writel(0x0, regs + sfb->variant.winmap + (win_no * 4)); | |
ec549a0f BD |
526 | |
527 | return 0; | |
528 | } | |
529 | ||
530 | /** | |
531 | * s3c_fb_update_palette() - set or schedule a palette update. | |
532 | * @sfb: The hardware information. | |
533 | * @win: The window being updated. | |
534 | * @reg: The palette index being changed. | |
535 | * @value: The computed palette value. | |
536 | * | |
537 | * Change the value of a palette register, either by directly writing to | |
538 | * the palette (this requires the palette RAM to be disconnected from the | |
539 | * hardware whilst this is in progress) or schedule the update for later. | |
540 | * | |
541 | * At the moment, since we have no VSYNC interrupt support, we simply set | |
542 | * the palette entry directly. | |
543 | */ | |
544 | static void s3c_fb_update_palette(struct s3c_fb *sfb, | |
545 | struct s3c_fb_win *win, | |
546 | unsigned int reg, | |
547 | u32 value) | |
548 | { | |
549 | void __iomem *palreg; | |
550 | u32 palcon; | |
551 | ||
50a5503a | 552 | palreg = sfb->regs + sfb->variant.palette[win->index]; |
ec549a0f BD |
553 | |
554 | dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n", | |
555 | __func__, win->index, reg, palreg, value); | |
556 | ||
557 | win->palette_buffer[reg] = value; | |
558 | ||
559 | palcon = readl(sfb->regs + WPALCON); | |
560 | writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON); | |
561 | ||
50a5503a BD |
562 | if (win->variant.palette_16bpp) |
563 | writew(value, palreg + (reg * 2)); | |
ec549a0f | 564 | else |
50a5503a | 565 | writel(value, palreg + (reg * 4)); |
ec549a0f BD |
566 | |
567 | writel(palcon, sfb->regs + WPALCON); | |
568 | } | |
569 | ||
570 | static inline unsigned int chan_to_field(unsigned int chan, | |
571 | struct fb_bitfield *bf) | |
572 | { | |
573 | chan &= 0xffff; | |
574 | chan >>= 16 - bf->length; | |
575 | return chan << bf->offset; | |
576 | } | |
577 | ||
578 | /** | |
579 | * s3c_fb_setcolreg() - framebuffer layer request to change palette. | |
580 | * @regno: The palette index to change. | |
581 | * @red: The red field for the palette data. | |
582 | * @green: The green field for the palette data. | |
583 | * @blue: The blue field for the palette data. | |
584 | * @trans: The transparency (alpha) field for the palette data. | |
585 | * @info: The framebuffer being changed. | |
586 | */ | |
587 | static int s3c_fb_setcolreg(unsigned regno, | |
588 | unsigned red, unsigned green, unsigned blue, | |
589 | unsigned transp, struct fb_info *info) | |
590 | { | |
591 | struct s3c_fb_win *win = info->par; | |
592 | struct s3c_fb *sfb = win->parent; | |
593 | unsigned int val; | |
594 | ||
595 | dev_dbg(sfb->dev, "%s: win %d: %d => rgb=%d/%d/%d\n", | |
596 | __func__, win->index, regno, red, green, blue); | |
597 | ||
598 | switch (info->fix.visual) { | |
599 | case FB_VISUAL_TRUECOLOR: | |
600 | /* true-colour, use pseudo-palette */ | |
601 | ||
602 | if (regno < 16) { | |
603 | u32 *pal = info->pseudo_palette; | |
604 | ||
605 | val = chan_to_field(red, &info->var.red); | |
606 | val |= chan_to_field(green, &info->var.green); | |
607 | val |= chan_to_field(blue, &info->var.blue); | |
608 | ||
609 | pal[regno] = val; | |
610 | } | |
611 | break; | |
612 | ||
613 | case FB_VISUAL_PSEUDOCOLOR: | |
50a5503a | 614 | if (regno < win->variant.palette_sz) { |
ec549a0f BD |
615 | val = chan_to_field(red, &win->palette.r); |
616 | val |= chan_to_field(green, &win->palette.g); | |
617 | val |= chan_to_field(blue, &win->palette.b); | |
618 | ||
619 | s3c_fb_update_palette(sfb, win, regno, val); | |
620 | } | |
621 | ||
622 | break; | |
623 | ||
624 | default: | |
625 | return 1; /* unknown type */ | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | /** | |
632 | * s3c_fb_enable() - Set the state of the main LCD output | |
633 | * @sfb: The main framebuffer state. | |
634 | * @enable: The state to set. | |
635 | */ | |
636 | static void s3c_fb_enable(struct s3c_fb *sfb, int enable) | |
637 | { | |
638 | u32 vidcon0 = readl(sfb->regs + VIDCON0); | |
639 | ||
640 | if (enable) | |
641 | vidcon0 |= VIDCON0_ENVID | VIDCON0_ENVID_F; | |
642 | else { | |
643 | /* see the note in the framebuffer datasheet about | |
644 | * why you cannot take both of these bits down at the | |
645 | * same time. */ | |
646 | ||
647 | if (!(vidcon0 & VIDCON0_ENVID)) | |
648 | return; | |
649 | ||
650 | vidcon0 |= VIDCON0_ENVID; | |
651 | vidcon0 &= ~VIDCON0_ENVID_F; | |
652 | } | |
653 | ||
654 | writel(vidcon0, sfb->regs + VIDCON0); | |
655 | } | |
656 | ||
657 | /** | |
658 | * s3c_fb_blank() - blank or unblank the given window | |
659 | * @blank_mode: The blank state from FB_BLANK_* | |
660 | * @info: The framebuffer to blank. | |
661 | * | |
662 | * Framebuffer layer request to change the power state. | |
663 | */ | |
664 | static int s3c_fb_blank(int blank_mode, struct fb_info *info) | |
665 | { | |
666 | struct s3c_fb_win *win = info->par; | |
667 | struct s3c_fb *sfb = win->parent; | |
668 | unsigned int index = win->index; | |
669 | u32 wincon; | |
670 | ||
671 | dev_dbg(sfb->dev, "blank mode %d\n", blank_mode); | |
672 | ||
c4bb6ffa | 673 | wincon = readl(sfb->regs + sfb->variant.wincon + (index * 4)); |
ec549a0f BD |
674 | |
675 | switch (blank_mode) { | |
676 | case FB_BLANK_POWERDOWN: | |
677 | wincon &= ~WINCONx_ENWIN; | |
678 | sfb->enabled &= ~(1 << index); | |
679 | /* fall through to FB_BLANK_NORMAL */ | |
680 | ||
681 | case FB_BLANK_NORMAL: | |
682 | /* disable the DMA and display 0x0 (black) */ | |
683 | writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0), | |
c4bb6ffa | 684 | sfb->regs + sfb->variant.winmap + (index * 4)); |
ec549a0f BD |
685 | break; |
686 | ||
687 | case FB_BLANK_UNBLANK: | |
c4bb6ffa | 688 | writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4)); |
ec549a0f BD |
689 | wincon |= WINCONx_ENWIN; |
690 | sfb->enabled |= (1 << index); | |
691 | break; | |
692 | ||
693 | case FB_BLANK_VSYNC_SUSPEND: | |
694 | case FB_BLANK_HSYNC_SUSPEND: | |
695 | default: | |
696 | return 1; | |
697 | } | |
698 | ||
c4bb6ffa | 699 | writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4)); |
ec549a0f BD |
700 | |
701 | /* Check the enabled state to see if we need to be running the | |
702 | * main LCD interface, as if there are no active windows then | |
703 | * it is highly likely that we also do not need to output | |
704 | * anything. | |
705 | */ | |
706 | ||
707 | /* We could do something like the following code, but the current | |
708 | * system of using framebuffer events means that we cannot make | |
709 | * the distinction between just window 0 being inactive and all | |
710 | * the windows being down. | |
711 | * | |
712 | * s3c_fb_enable(sfb, sfb->enabled ? 1 : 0); | |
713 | */ | |
714 | ||
715 | /* we're stuck with this until we can do something about overriding | |
716 | * the power control using the blanking event for a single fb. | |
717 | */ | |
ad04490a | 718 | if (index == sfb->pdata->default_win) |
ec549a0f BD |
719 | s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0); |
720 | ||
721 | return 0; | |
722 | } | |
723 | ||
724 | static struct fb_ops s3c_fb_ops = { | |
725 | .owner = THIS_MODULE, | |
726 | .fb_check_var = s3c_fb_check_var, | |
727 | .fb_set_par = s3c_fb_set_par, | |
728 | .fb_blank = s3c_fb_blank, | |
729 | .fb_setcolreg = s3c_fb_setcolreg, | |
730 | .fb_fillrect = cfb_fillrect, | |
731 | .fb_copyarea = cfb_copyarea, | |
732 | .fb_imageblit = cfb_imageblit, | |
733 | }; | |
734 | ||
735 | /** | |
736 | * s3c_fb_alloc_memory() - allocate display memory for framebuffer window | |
737 | * @sfb: The base resources for the hardware. | |
738 | * @win: The window to initialise memory for. | |
739 | * | |
740 | * Allocate memory for the given framebuffer. | |
741 | */ | |
742 | static int __devinit s3c_fb_alloc_memory(struct s3c_fb *sfb, | |
743 | struct s3c_fb_win *win) | |
744 | { | |
745 | struct s3c_fb_pd_win *windata = win->windata; | |
746 | unsigned int real_size, virt_size, size; | |
747 | struct fb_info *fbi = win->fbinfo; | |
748 | dma_addr_t map_dma; | |
749 | ||
750 | dev_dbg(sfb->dev, "allocating memory for display\n"); | |
751 | ||
752 | real_size = windata->win_mode.xres * windata->win_mode.yres; | |
753 | virt_size = windata->virtual_x * windata->virtual_y; | |
754 | ||
755 | dev_dbg(sfb->dev, "real_size=%u (%u.%u), virt_size=%u (%u.%u)\n", | |
756 | real_size, windata->win_mode.xres, windata->win_mode.yres, | |
757 | virt_size, windata->virtual_x, windata->virtual_y); | |
758 | ||
759 | size = (real_size > virt_size) ? real_size : virt_size; | |
760 | size *= (windata->max_bpp > 16) ? 32 : windata->max_bpp; | |
761 | size /= 8; | |
762 | ||
763 | fbi->fix.smem_len = size; | |
764 | size = PAGE_ALIGN(size); | |
765 | ||
766 | dev_dbg(sfb->dev, "want %u bytes for window\n", size); | |
767 | ||
768 | fbi->screen_base = dma_alloc_writecombine(sfb->dev, size, | |
769 | &map_dma, GFP_KERNEL); | |
770 | if (!fbi->screen_base) | |
771 | return -ENOMEM; | |
772 | ||
773 | dev_dbg(sfb->dev, "mapped %x to %p\n", | |
774 | (unsigned int)map_dma, fbi->screen_base); | |
775 | ||
776 | memset(fbi->screen_base, 0x0, size); | |
777 | fbi->fix.smem_start = map_dma; | |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
782 | /** | |
783 | * s3c_fb_free_memory() - free the display memory for the given window | |
784 | * @sfb: The base resources for the hardware. | |
785 | * @win: The window to free the display memory for. | |
786 | * | |
787 | * Free the display memory allocated by s3c_fb_alloc_memory(). | |
788 | */ | |
789 | static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win) | |
790 | { | |
791 | struct fb_info *fbi = win->fbinfo; | |
792 | ||
793 | dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len), | |
794 | fbi->screen_base, fbi->fix.smem_start); | |
795 | } | |
796 | ||
797 | /** | |
798 | * s3c_fb_release_win() - release resources for a framebuffer window. | |
799 | * @win: The window to cleanup the resources for. | |
800 | * | |
801 | * Release the resources that where claimed for the hardware window, | |
802 | * such as the framebuffer instance and any memory claimed for it. | |
803 | */ | |
804 | static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win) | |
805 | { | |
ddc518d9 KH |
806 | if (win->fbinfo) { |
807 | unregister_framebuffer(win->fbinfo); | |
808 | fb_dealloc_cmap(&win->fbinfo->cmap); | |
809 | s3c_fb_free_memory(sfb, win); | |
810 | framebuffer_release(win->fbinfo); | |
811 | } | |
ec549a0f BD |
812 | } |
813 | ||
814 | /** | |
815 | * s3c_fb_probe_win() - register an hardware window | |
816 | * @sfb: The base resources for the hardware | |
50a5503a | 817 | * @variant: The variant information for this window. |
ec549a0f BD |
818 | * @res: Pointer to where to place the resultant window. |
819 | * | |
820 | * Allocate and do the basic initialisation for one of the hardware's graphics | |
821 | * windows. | |
822 | */ | |
823 | static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no, | |
50a5503a | 824 | struct s3c_fb_win_variant *variant, |
ec549a0f BD |
825 | struct s3c_fb_win **res) |
826 | { | |
827 | struct fb_var_screeninfo *var; | |
828 | struct fb_videomode *initmode; | |
829 | struct s3c_fb_pd_win *windata; | |
830 | struct s3c_fb_win *win; | |
831 | struct fb_info *fbinfo; | |
832 | int palette_size; | |
833 | int ret; | |
834 | ||
c4bb6ffa | 835 | dev_dbg(sfb->dev, "probing window %d, variant %p\n", win_no, variant); |
ec549a0f | 836 | |
50a5503a | 837 | palette_size = variant->palette_sz * 4; |
ec549a0f BD |
838 | |
839 | fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) + | |
840 | palette_size * sizeof(u32), sfb->dev); | |
841 | if (!fbinfo) { | |
842 | dev_err(sfb->dev, "failed to allocate framebuffer\n"); | |
843 | return -ENOENT; | |
844 | } | |
845 | ||
846 | windata = sfb->pdata->win[win_no]; | |
847 | initmode = &windata->win_mode; | |
848 | ||
849 | WARN_ON(windata->max_bpp == 0); | |
850 | WARN_ON(windata->win_mode.xres == 0); | |
851 | WARN_ON(windata->win_mode.yres == 0); | |
852 | ||
853 | win = fbinfo->par; | |
854 | var = &fbinfo->var; | |
50a5503a | 855 | win->variant = *variant; |
ec549a0f BD |
856 | win->fbinfo = fbinfo; |
857 | win->parent = sfb; | |
858 | win->windata = windata; | |
859 | win->index = win_no; | |
860 | win->palette_buffer = (u32 *)(win + 1); | |
861 | ||
862 | ret = s3c_fb_alloc_memory(sfb, win); | |
863 | if (ret) { | |
864 | dev_err(sfb->dev, "failed to allocate display memory\n"); | |
ddc518d9 | 865 | return ret; |
ec549a0f BD |
866 | } |
867 | ||
868 | /* setup the r/b/g positions for the window's palette */ | |
869 | s3c_fb_init_palette(win_no, &win->palette); | |
870 | ||
871 | /* setup the initial video mode from the window */ | |
872 | fb_videomode_to_var(&fbinfo->var, initmode); | |
873 | ||
874 | fbinfo->fix.type = FB_TYPE_PACKED_PIXELS; | |
875 | fbinfo->fix.accel = FB_ACCEL_NONE; | |
876 | fbinfo->var.activate = FB_ACTIVATE_NOW; | |
877 | fbinfo->var.vmode = FB_VMODE_NONINTERLACED; | |
878 | fbinfo->var.bits_per_pixel = windata->default_bpp; | |
879 | fbinfo->fbops = &s3c_fb_ops; | |
880 | fbinfo->flags = FBINFO_FLAG_DEFAULT; | |
881 | fbinfo->pseudo_palette = &win->pseudo_palette; | |
882 | ||
883 | /* prepare to actually start the framebuffer */ | |
884 | ||
885 | ret = s3c_fb_check_var(&fbinfo->var, fbinfo); | |
886 | if (ret < 0) { | |
887 | dev_err(sfb->dev, "check_var failed on initial video params\n"); | |
ddc518d9 | 888 | return ret; |
ec549a0f BD |
889 | } |
890 | ||
891 | /* create initial colour map */ | |
892 | ||
50a5503a | 893 | ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1); |
ec549a0f BD |
894 | if (ret == 0) |
895 | fb_set_cmap(&fbinfo->cmap, fbinfo); | |
896 | else | |
897 | dev_err(sfb->dev, "failed to allocate fb cmap\n"); | |
898 | ||
899 | s3c_fb_set_par(fbinfo); | |
900 | ||
901 | dev_dbg(sfb->dev, "about to register framebuffer\n"); | |
902 | ||
903 | /* run the check_var and set_par on our configuration. */ | |
904 | ||
905 | ret = register_framebuffer(fbinfo); | |
906 | if (ret < 0) { | |
907 | dev_err(sfb->dev, "failed to register framebuffer\n"); | |
ddc518d9 | 908 | return ret; |
ec549a0f BD |
909 | } |
910 | ||
911 | *res = win; | |
912 | dev_info(sfb->dev, "window %d: fb %s\n", win_no, fbinfo->fix.id); | |
913 | ||
914 | return 0; | |
ec549a0f BD |
915 | } |
916 | ||
917 | /** | |
918 | * s3c_fb_clear_win() - clear hardware window registers. | |
919 | * @sfb: The base resources for the hardware. | |
920 | * @win: The window to process. | |
921 | * | |
922 | * Reset the specific window registers to a known state. | |
923 | */ | |
924 | static void s3c_fb_clear_win(struct s3c_fb *sfb, int win) | |
925 | { | |
926 | void __iomem *regs = sfb->regs; | |
927 | ||
c4bb6ffa BD |
928 | writel(0, regs + sfb->variant.wincon + (win * 4)); |
929 | writel(0, regs + VIDOSD_A(win, sfb->variant)); | |
930 | writel(0, regs + VIDOSD_B(win, sfb->variant)); | |
931 | writel(0, regs + VIDOSD_C(win, sfb->variant)); | |
ec549a0f BD |
932 | } |
933 | ||
934 | static int __devinit s3c_fb_probe(struct platform_device *pdev) | |
935 | { | |
50a5503a | 936 | struct s3c_fb_driverdata *fbdrv; |
ec549a0f BD |
937 | struct device *dev = &pdev->dev; |
938 | struct s3c_fb_platdata *pd; | |
939 | struct s3c_fb *sfb; | |
940 | struct resource *res; | |
941 | int win; | |
942 | int ret = 0; | |
943 | ||
50a5503a BD |
944 | fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data; |
945 | ||
946 | if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) { | |
947 | dev_err(dev, "too many windows, cannot attach\n"); | |
948 | return -EINVAL; | |
949 | } | |
950 | ||
ec549a0f BD |
951 | pd = pdev->dev.platform_data; |
952 | if (!pd) { | |
953 | dev_err(dev, "no platform data specified\n"); | |
954 | return -EINVAL; | |
955 | } | |
956 | ||
957 | sfb = kzalloc(sizeof(struct s3c_fb), GFP_KERNEL); | |
958 | if (!sfb) { | |
959 | dev_err(dev, "no memory for framebuffers\n"); | |
960 | return -ENOMEM; | |
961 | } | |
962 | ||
c4bb6ffa BD |
963 | dev_dbg(dev, "allocate new framebuffer %p\n", sfb); |
964 | ||
ec549a0f BD |
965 | sfb->dev = dev; |
966 | sfb->pdata = pd; | |
50a5503a | 967 | sfb->variant = fbdrv->variant; |
ec549a0f BD |
968 | |
969 | sfb->bus_clk = clk_get(dev, "lcd"); | |
970 | if (IS_ERR(sfb->bus_clk)) { | |
971 | dev_err(dev, "failed to get bus clock\n"); | |
972 | goto err_sfb; | |
973 | } | |
974 | ||
975 | clk_enable(sfb->bus_clk); | |
976 | ||
977 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
978 | if (!res) { | |
979 | dev_err(dev, "failed to find registers\n"); | |
980 | ret = -ENOENT; | |
981 | goto err_clk; | |
982 | } | |
983 | ||
984 | sfb->regs_res = request_mem_region(res->start, resource_size(res), | |
985 | dev_name(dev)); | |
986 | if (!sfb->regs_res) { | |
987 | dev_err(dev, "failed to claim register region\n"); | |
988 | ret = -ENOENT; | |
989 | goto err_clk; | |
990 | } | |
991 | ||
992 | sfb->regs = ioremap(res->start, resource_size(res)); | |
993 | if (!sfb->regs) { | |
994 | dev_err(dev, "failed to map registers\n"); | |
995 | ret = -ENXIO; | |
996 | goto err_req_region; | |
997 | } | |
998 | ||
999 | dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs); | |
1000 | ||
1001 | /* setup gpio and output polarity controls */ | |
1002 | ||
1003 | pd->setup_gpio(); | |
1004 | ||
1005 | writel(pd->vidcon1, sfb->regs + VIDCON1); | |
1006 | ||
1007 | /* zero all windows before we do anything */ | |
1008 | ||
50a5503a | 1009 | for (win = 0; win < fbdrv->variant.nr_windows; win++) |
ec549a0f BD |
1010 | s3c_fb_clear_win(sfb, win); |
1011 | ||
94947037 | 1012 | /* initialise colour key controls */ |
50a5503a | 1013 | for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) { |
c4bb6ffa BD |
1014 | void __iomem *regs = sfb->regs + sfb->variant.keycon; |
1015 | ||
1016 | regs += (win * 8); | |
1017 | writel(0xffffff, regs + WKEYCON0); | |
1018 | writel(0xffffff, regs + WKEYCON1); | |
94947037 BD |
1019 | } |
1020 | ||
ec549a0f BD |
1021 | /* we have the register setup, start allocating framebuffers */ |
1022 | ||
50a5503a | 1023 | for (win = 0; win < fbdrv->variant.nr_windows; win++) { |
ec549a0f BD |
1024 | if (!pd->win[win]) |
1025 | continue; | |
1026 | ||
50a5503a BD |
1027 | ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win], |
1028 | &sfb->windows[win]); | |
ec549a0f BD |
1029 | if (ret < 0) { |
1030 | dev_err(dev, "failed to create window %d\n", win); | |
1031 | for (; win >= 0; win--) | |
1032 | s3c_fb_release_win(sfb, sfb->windows[win]); | |
1033 | goto err_ioremap; | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | platform_set_drvdata(pdev, sfb); | |
1038 | ||
1039 | return 0; | |
1040 | ||
1041 | err_ioremap: | |
1042 | iounmap(sfb->regs); | |
1043 | ||
1044 | err_req_region: | |
1045 | release_resource(sfb->regs_res); | |
1046 | kfree(sfb->regs_res); | |
1047 | ||
1048 | err_clk: | |
1049 | clk_disable(sfb->bus_clk); | |
1050 | clk_put(sfb->bus_clk); | |
1051 | ||
1052 | err_sfb: | |
1053 | kfree(sfb); | |
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | /** | |
1058 | * s3c_fb_remove() - Cleanup on module finalisation | |
1059 | * @pdev: The platform device we are bound to. | |
1060 | * | |
1061 | * Shutdown and then release all the resources that the driver allocated | |
1062 | * on initialisation. | |
1063 | */ | |
1064 | static int __devexit s3c_fb_remove(struct platform_device *pdev) | |
1065 | { | |
1066 | struct s3c_fb *sfb = platform_get_drvdata(pdev); | |
1067 | int win; | |
1068 | ||
c42b110c | 1069 | for (win = 0; win < S3C_FB_MAX_WIN; win++) |
17663e59 MS |
1070 | if (sfb->windows[win]) |
1071 | s3c_fb_release_win(sfb, sfb->windows[win]); | |
ec549a0f BD |
1072 | |
1073 | iounmap(sfb->regs); | |
1074 | ||
1075 | clk_disable(sfb->bus_clk); | |
1076 | clk_put(sfb->bus_clk); | |
1077 | ||
1078 | release_resource(sfb->regs_res); | |
1079 | kfree(sfb->regs_res); | |
1080 | ||
1081 | kfree(sfb); | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | #ifdef CONFIG_PM | |
1087 | static int s3c_fb_suspend(struct platform_device *pdev, pm_message_t state) | |
1088 | { | |
1089 | struct s3c_fb *sfb = platform_get_drvdata(pdev); | |
1090 | struct s3c_fb_win *win; | |
1091 | int win_no; | |
1092 | ||
c42b110c | 1093 | for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) { |
ec549a0f BD |
1094 | win = sfb->windows[win_no]; |
1095 | if (!win) | |
1096 | continue; | |
1097 | ||
1098 | /* use the blank function to push into power-down */ | |
1099 | s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo); | |
1100 | } | |
1101 | ||
1102 | clk_disable(sfb->bus_clk); | |
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | static int s3c_fb_resume(struct platform_device *pdev) | |
1107 | { | |
1108 | struct s3c_fb *sfb = platform_get_drvdata(pdev); | |
17663e59 | 1109 | struct s3c_fb_platdata *pd = sfb->pdata; |
ec549a0f BD |
1110 | struct s3c_fb_win *win; |
1111 | int win_no; | |
1112 | ||
1113 | clk_enable(sfb->bus_clk); | |
1114 | ||
17663e59 MS |
1115 | /* setup registers */ |
1116 | writel(pd->vidcon1, sfb->regs + VIDCON1); | |
1117 | ||
1118 | /* zero all windows before we do anything */ | |
50a5503a | 1119 | for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++) |
17663e59 MS |
1120 | s3c_fb_clear_win(sfb, win_no); |
1121 | ||
50a5503a | 1122 | for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) { |
c4bb6ffa BD |
1123 | void __iomem *regs = sfb->regs + sfb->variant.keycon; |
1124 | ||
1125 | regs += (win_no * 8); | |
1126 | writel(0xffffff, regs + WKEYCON0); | |
1127 | writel(0xffffff, regs + WKEYCON1); | |
94947037 BD |
1128 | } |
1129 | ||
17663e59 | 1130 | /* restore framebuffers */ |
ec549a0f BD |
1131 | for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) { |
1132 | win = sfb->windows[win_no]; | |
1133 | if (!win) | |
1134 | continue; | |
1135 | ||
1136 | dev_dbg(&pdev->dev, "resuming window %d\n", win_no); | |
1137 | s3c_fb_set_par(win->fbinfo); | |
1138 | } | |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | #else | |
1143 | #define s3c_fb_suspend NULL | |
1144 | #define s3c_fb_resume NULL | |
1145 | #endif | |
1146 | ||
50a5503a BD |
1147 | |
1148 | #define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4)) | |
1149 | #define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8)) | |
1150 | ||
1151 | static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] __devinitdata = { | |
1152 | [0] = { | |
1153 | .has_osd_c = 1, | |
1154 | .palette_sz = 256, | |
1155 | .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24), | |
1156 | }, | |
1157 | [1] = { | |
1158 | .has_osd_c = 1, | |
1159 | .has_osd_d = 1, | |
1160 | .palette_sz = 256, | |
1161 | .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | | |
1162 | VALID_BPP(18) | VALID_BPP(19) | | |
1163 | VALID_BPP(24) | VALID_BPP(25)), | |
1164 | }, | |
1165 | [2] = { | |
1166 | .has_osd_c = 1, | |
1167 | .has_osd_d = 1, | |
1168 | .palette_sz = 16, | |
1169 | .palette_16bpp = 1, | |
1170 | .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | | |
1171 | VALID_BPP(18) | VALID_BPP(19) | | |
1172 | VALID_BPP(24) | VALID_BPP(25)), | |
1173 | }, | |
1174 | [3] = { | |
1175 | .has_osd_c = 1, | |
1176 | .has_osd_d = 1, | |
1177 | .palette_sz = 16, | |
1178 | .palette_16bpp = 1, | |
1179 | .valid_bpp = (VALID_BPP124 | VALID_BPP(16) | | |
1180 | VALID_BPP(18) | VALID_BPP(19) | | |
1181 | VALID_BPP(24) | VALID_BPP(25)), | |
1182 | }, | |
1183 | [4] = { | |
1184 | .has_osd_c = 1, | |
1185 | .palette_sz = 4, | |
1186 | .palette_16bpp = 1, | |
1187 | .valid_bpp = (VALID_BPP(1) | VALID_BPP(2) | | |
1188 | VALID_BPP(16) | VALID_BPP(18) | | |
1189 | VALID_BPP(24) | VALID_BPP(25)), | |
1190 | }, | |
1191 | }; | |
1192 | ||
1193 | static struct s3c_fb_driverdata s3c_fb_data_64xx __devinitdata = { | |
1194 | .variant = { | |
1195 | .nr_windows = 5, | |
c4bb6ffa BD |
1196 | .vidtcon = VIDTCON0, |
1197 | .wincon = WINCON(0), | |
1198 | .winmap = WINxMAP(0), | |
1199 | .keycon = WKEYCON, | |
1200 | .osd = VIDOSD_BASE, | |
1201 | .osd_stride = 16, | |
1202 | .buf_start = VIDW_BUF_START(0), | |
1203 | .buf_size = VIDW_BUF_SIZE(0), | |
1204 | .buf_end = VIDW_BUF_END(0), | |
50a5503a BD |
1205 | |
1206 | .palette = { | |
1207 | [0] = 0x400, | |
1208 | [1] = 0x800, | |
1209 | [2] = 0x300, | |
1210 | [3] = 0x320, | |
1211 | [4] = 0x340, | |
1212 | }, | |
1213 | }, | |
1214 | .win[0] = &s3c_fb_data_64xx_wins[0], | |
1215 | .win[1] = &s3c_fb_data_64xx_wins[1], | |
1216 | .win[2] = &s3c_fb_data_64xx_wins[2], | |
1217 | .win[3] = &s3c_fb_data_64xx_wins[3], | |
1218 | .win[4] = &s3c_fb_data_64xx_wins[4], | |
1219 | }; | |
1220 | ||
1221 | static struct s3c_fb_driverdata s3c_fb_data_s5p __devinitdata = { | |
1222 | .variant = { | |
1223 | .nr_windows = 5, | |
c4bb6ffa BD |
1224 | .vidtcon = VIDTCON0, |
1225 | .wincon = WINCON(0), | |
1226 | .winmap = WINxMAP(0), | |
1227 | .keycon = WKEYCON, | |
1228 | .osd = VIDOSD_BASE, | |
1229 | .osd_stride = 16, | |
1230 | .buf_start = VIDW_BUF_START(0), | |
1231 | .buf_size = VIDW_BUF_SIZE(0), | |
1232 | .buf_end = VIDW_BUF_END(0), | |
50a5503a BD |
1233 | |
1234 | .palette = { | |
1235 | [0] = 0x2400, | |
1236 | [1] = 0x2800, | |
1237 | [2] = 0x2c00, | |
1238 | [3] = 0x3000, | |
1239 | [4] = 0x3400, | |
1240 | }, | |
1241 | }, | |
1242 | .win[0] = &s3c_fb_data_64xx_wins[0], | |
1243 | .win[1] = &s3c_fb_data_64xx_wins[1], | |
1244 | .win[2] = &s3c_fb_data_64xx_wins[2], | |
1245 | .win[3] = &s3c_fb_data_64xx_wins[3], | |
1246 | .win[4] = &s3c_fb_data_64xx_wins[4], | |
1247 | }; | |
1248 | ||
c4bb6ffa BD |
1249 | /* S3C2443/S3C2416 style hardware */ |
1250 | static struct s3c_fb_driverdata s3c_fb_data_s3c2443 __devinitdata = { | |
1251 | .variant = { | |
1252 | .nr_windows = 2, | |
1253 | .is_2443 = 1, | |
1254 | ||
1255 | .vidtcon = 0x08, | |
1256 | .wincon = 0x14, | |
1257 | .winmap = 0xd0, | |
1258 | .keycon = 0xb0, | |
1259 | .osd = 0x28, | |
1260 | .osd_stride = 12, | |
1261 | .buf_start = 0x64, | |
1262 | .buf_size = 0x94, | |
1263 | .buf_end = 0x7c, | |
1264 | ||
1265 | .palette = { | |
1266 | [0] = 0x400, | |
1267 | [1] = 0x800, | |
1268 | }, | |
1269 | }, | |
1270 | .win[0] = &(struct s3c_fb_win_variant) { | |
1271 | .palette_sz = 256, | |
1272 | .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24), | |
1273 | }, | |
1274 | .win[1] = &(struct s3c_fb_win_variant) { | |
1275 | .has_osd_c = 1, | |
1276 | .palette_sz = 256, | |
1277 | .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) | | |
1278 | VALID_BPP(18) | VALID_BPP(19) | | |
1279 | VALID_BPP(24) | VALID_BPP(25) | | |
1280 | VALID_BPP(28)), | |
1281 | }, | |
1282 | }; | |
1283 | ||
50a5503a BD |
1284 | static struct platform_device_id s3c_fb_driver_ids[] = { |
1285 | { | |
1286 | .name = "s3c-fb", | |
1287 | .driver_data = (unsigned long)&s3c_fb_data_64xx, | |
1288 | }, { | |
1289 | .name = "s5p-fb", | |
1290 | .driver_data = (unsigned long)&s3c_fb_data_s5p, | |
c4bb6ffa BD |
1291 | }, { |
1292 | .name = "s3c2443-fb", | |
1293 | .driver_data = (unsigned long)&s3c_fb_data_s3c2443, | |
50a5503a BD |
1294 | }, |
1295 | {}, | |
1296 | }; | |
1297 | MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids); | |
1298 | ||
ec549a0f BD |
1299 | static struct platform_driver s3c_fb_driver = { |
1300 | .probe = s3c_fb_probe, | |
3163eaba | 1301 | .remove = __devexit_p(s3c_fb_remove), |
ec549a0f BD |
1302 | .suspend = s3c_fb_suspend, |
1303 | .resume = s3c_fb_resume, | |
50a5503a | 1304 | .id_table = s3c_fb_driver_ids, |
ec549a0f BD |
1305 | .driver = { |
1306 | .name = "s3c-fb", | |
1307 | .owner = THIS_MODULE, | |
1308 | }, | |
1309 | }; | |
1310 | ||
1311 | static int __init s3c_fb_init(void) | |
1312 | { | |
1313 | return platform_driver_register(&s3c_fb_driver); | |
1314 | } | |
1315 | ||
1316 | static void __exit s3c_fb_cleanup(void) | |
1317 | { | |
1318 | platform_driver_unregister(&s3c_fb_driver); | |
1319 | } | |
1320 | ||
1321 | module_init(s3c_fb_init); | |
1322 | module_exit(s3c_fb_cleanup); | |
1323 | ||
1324 | MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); | |
1325 | MODULE_DESCRIPTION("Samsung S3C SoC Framebuffer driver"); | |
1326 | MODULE_LICENSE("GPL"); | |
1327 | MODULE_ALIAS("platform:s3c-fb"); |