1 /* linux/drivers/video/s3c-fb.c
3 * Copyright 2008 Openmoko Inc.
4 * Copyright 2008-2010 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
6 * http://armlinux.simtec.co.uk/
8 * Samsung SoC Framebuffer driver
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
12 * published by the Free Software FoundatIon.
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/dma-mapping.h>
19 #include <linux/slab.h>
20 #include <linux/init.h>
21 #include <linux/clk.h>
24 #include <linux/uaccess.h>
25 #include <linux/interrupt.h>
26 #include <linux/pm_runtime.h>
29 #include <plat/regs-fb-v4.h>
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.
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.
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43 * has been replaced by using the platform device name to pick the correct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.
47 #ifdef CONFIG_FB_S3C_DEBUG_REGWRITE
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 */
55 #define S3C_FB_VSYNC_IRQ_EN 0
57 #define VSYNC_TIMEOUT_MSEC 50
61 #define VALID_BPP(x) (1 << ((x) - 1))
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)
70 * struct s3c_fb_variant - fb variant information
71 * @is_2443: Set if S3C2443/S3C2416 style hardware.
72 * @nr_windows: The number of windows.
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.
81 * @palette: Address of palette memory, or 0 if none.
82 * @has_prtcon: Set if has PRTCON register.
83 * @has_shadowcon: Set if has SHADOWCON register.
85 struct s3c_fb_variant
{
86 unsigned int is_2443
:1;
87 unsigned short nr_windows
;
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
;
96 unsigned short osd_stride
;
97 unsigned short palette
[S3C_FB_MAX_WIN
];
99 unsigned int has_prtcon
:1;
100 unsigned int has_shadowcon
:1;
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.
107 * @has_osd_alpha: Set if can change alpha transparency for a window.
108 * @palette_sz: Size of palette in entries.
109 * @palette_16bpp: Set if palette is 16bits wide.
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.
112 * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel.
114 * valid_bpp bit x is set if (x+1)BPP is supported.
116 struct s3c_fb_win_variant
{
117 unsigned int has_osd_c
:1;
118 unsigned int has_osd_d
:1;
119 unsigned int has_osd_alpha
:1;
120 unsigned int palette_16bpp
:1;
121 unsigned short osd_size_off
;
122 unsigned short palette_sz
;
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.
131 struct s3c_fb_driverdata
{
132 struct s3c_fb_variant variant
;
133 struct s3c_fb_win_variant
*win
[S3C_FB_MAX_WIN
];
137 * struct s3c_fb_palette - palette information
139 * @g: Green bitfield.
141 * @a: Alpha bitfield.
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
;
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.
155 * @varint: The variant information for this window.
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.
162 struct s3c_fb_pd_win
*windata
;
163 struct s3c_fb
*parent
;
164 struct fb_info
*fbinfo
;
165 struct s3c_fb_palette palette
;
166 struct s3c_fb_win_variant variant
;
169 u32 pseudo_palette
[16];
174 * struct s3c_fb_vsync - vsync information
175 * @wait: a queue for processes waiting for vsync
176 * @count: vsync interrupt count
178 struct s3c_fb_vsync
{
179 wait_queue_head_t wait
;
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.
189 * @variant: Variant information for this hardware.
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.
193 * @irq_no: IRQ line number
194 * @irq_flags: irq flags
195 * @vsync_info: VSYNC-related information (count, queues...)
199 struct resource
*regs_res
;
202 struct s3c_fb_variant variant
;
204 unsigned char enabled
;
206 struct s3c_fb_platdata
*pdata
;
207 struct s3c_fb_win
*windows
[S3C_FB_MAX_WIN
];
210 unsigned long irq_flags
;
211 struct s3c_fb_vsync vsync_info
;
215 * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode.
216 * @win: The device window.
217 * @bpp: The bit depth.
219 static bool s3c_fb_validate_win_bpp(struct s3c_fb_win
*win
, unsigned int bpp
)
221 return win
->variant
.valid_bpp
& VALID_BPP(bpp
);
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.
229 * Framebuffer layer call to verify the given information and allow us to
230 * update various information depending on the hardware capabilities.
232 static int s3c_fb_check_var(struct fb_var_screeninfo
*var
,
233 struct fb_info
*info
)
235 struct s3c_fb_win
*win
= info
->par
;
236 struct s3c_fb_pd_win
*windata
= win
->windata
;
237 struct s3c_fb
*sfb
= win
->parent
;
239 dev_dbg(sfb
->dev
, "checking parameters\n");
241 var
->xres_virtual
= max((unsigned int)windata
->virtual_x
, var
->xres
);
242 var
->yres_virtual
= max((unsigned int)windata
->virtual_y
, var
->yres
);
244 if (!s3c_fb_validate_win_bpp(win
, var
->bits_per_pixel
)) {
245 dev_dbg(sfb
->dev
, "win %d: unsupported bpp %d\n",
246 win
->index
, var
->bits_per_pixel
);
250 /* always ensure these are zero, for drop through cases below */
251 var
->transp
.offset
= 0;
252 var
->transp
.length
= 0;
254 switch (var
->bits_per_pixel
) {
259 if (sfb
->variant
.palette
[win
->index
] != 0) {
260 /* non palletised, A:1,R:2,G:3,B:2 mode */
262 var
->green
.offset
= 2;
263 var
->blue
.offset
= 0;
265 var
->green
.length
= 3;
266 var
->blue
.length
= 2;
267 var
->transp
.offset
= 7;
268 var
->transp
.length
= 1;
271 var
->red
.length
= var
->bits_per_pixel
;
272 var
->green
= var
->red
;
273 var
->blue
= var
->red
;
278 /* 666 with one bit alpha/transparency */
279 var
->transp
.offset
= 18;
280 var
->transp
.length
= 1;
282 var
->bits_per_pixel
= 32;
285 var
->red
.offset
= 12;
286 var
->green
.offset
= 6;
287 var
->blue
.offset
= 0;
289 var
->green
.length
= 6;
290 var
->blue
.length
= 6;
294 /* 16 bpp, 565 format */
295 var
->red
.offset
= 11;
296 var
->green
.offset
= 5;
297 var
->blue
.offset
= 0;
299 var
->green
.length
= 6;
300 var
->blue
.length
= 5;
305 var
->transp
.length
= var
->bits_per_pixel
- 24;
306 var
->transp
.offset
= 24;
309 /* our 24bpp is unpacked, so 32bpp */
310 var
->bits_per_pixel
= 32;
312 var
->red
.offset
= 16;
314 var
->green
.offset
= 8;
315 var
->green
.length
= 8;
316 var
->blue
.offset
= 0;
317 var
->blue
.length
= 8;
321 dev_err(sfb
->dev
, "invalid bpp\n");
324 dev_dbg(sfb
->dev
, "%s: verified parameters\n", __func__
);
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.
333 * Given the specified pixel clock, work out the necessary divider to get
334 * close to the output frequency.
336 static int s3c_fb_calc_pixclk(struct s3c_fb
*sfb
, unsigned int pixclk
)
338 unsigned long clk
= clk_get_rate(sfb
->bus_clk
);
339 unsigned long long tmp
;
342 tmp
= (unsigned long long)clk
;
345 do_div(tmp
, 1000000000UL);
346 result
= (unsigned int)tmp
/ 1000;
348 dev_dbg(sfb
->dev
, "pixclk=%u, clk=%lu, div=%d (%lu)\n",
349 pixclk
, clk
, result
, clk
/ result
);
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.
359 * Align the given pixel count so that it will start on an 32bit word
362 static int s3c_fb_align_word(unsigned int bpp
, unsigned int pix
)
369 pix_per_word
= (8 * 32) / bpp
;
370 return ALIGN(pix
, pix_per_word
);
374 * vidosd_set_size() - set OSD size for a window
376 * @win: the window to set OSD size for
377 * @size: OSD size register value
379 static void vidosd_set_size(struct s3c_fb_win
*win
, u32 size
)
381 struct s3c_fb
*sfb
= win
->parent
;
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
);
390 * vidosd_set_alpha() - set alpha transparency for a window
392 * @win: the window to set OSD size for
393 * @alpha: alpha register value
395 static void vidosd_set_alpha(struct s3c_fb_win
*win
, u32 alpha
)
397 struct s3c_fb
*sfb
= win
->parent
;
399 if (win
->variant
.has_osd_alpha
)
400 writel(alpha
, sfb
->regs
+ VIDOSD_C(win
->index
, sfb
->variant
));
404 * shadow_protect_win() - disable updating values from shadow registers at vsync
406 * @win: window to protect registers for
407 * @protect: 1 to protect (disable updates)
409 static void shadow_protect_win(struct s3c_fb_win
*win
, bool protect
)
411 struct s3c_fb
*sfb
= win
->parent
;
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
);
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
);
434 * s3c_fb_set_par() - framebuffer request to set new framebuffer state.
435 * @info: The framebuffer to change.
437 * Framebuffer layer request to set a new mode for the specified framebuffer
439 static int s3c_fb_set_par(struct fb_info
*info
)
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
;
445 void __iomem
*buf
= regs
;
446 int win_no
= win
->index
;
452 dev_dbg(sfb
->dev
, "setting framebuffer parameters\n");
454 shadow_protect_win(win
, 1);
456 switch (var
->bits_per_pixel
) {
461 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
464 if (win
->variant
.palette_sz
>= 256)
465 info
->fix
.visual
= FB_VISUAL_PSEUDOCOLOR
;
467 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
470 info
->fix
.visual
= FB_VISUAL_MONO01
;
473 info
->fix
.visual
= FB_VISUAL_PSEUDOCOLOR
;
477 info
->fix
.line_length
= (var
->xres_virtual
* var
->bits_per_pixel
) / 8;
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;
482 /* disable the window whilst we update it */
483 writel(0, regs
+ WINCON(win_no
));
485 /* use platform specified window as the basis for the lcd timings */
487 if (win_no
== sfb
->pdata
->default_win
) {
488 clkdiv
= s3c_fb_calc_pixclk(sfb
, var
->pixclock
);
490 data
= sfb
->pdata
->vidcon0
;
491 data
&= ~(VIDCON0_CLKVAL_F_MASK
| VIDCON0_CLKDIR
);
494 data
|= VIDCON0_CLKVAL_F(clkdiv
-1) | VIDCON0_CLKDIR
;
496 data
&= ~VIDCON0_CLKDIR
; /* 1:1 clock */
498 /* write the timing data to the panel */
500 if (sfb
->variant
.is_2443
)
503 data
|= VIDCON0_ENVID
| VIDCON0_ENVID_F
;
504 writel(data
, regs
+ VIDCON0
);
506 data
= VIDTCON0_VBPD(var
->upper_margin
- 1) |
507 VIDTCON0_VFPD(var
->lower_margin
- 1) |
508 VIDTCON0_VSPW(var
->vsync_len
- 1);
510 writel(data
, regs
+ sfb
->variant
.vidtcon
);
512 data
= VIDTCON1_HBPD(var
->left_margin
- 1) |
513 VIDTCON1_HFPD(var
->right_margin
- 1) |
514 VIDTCON1_HSPW(var
->hsync_len
- 1);
517 writel(data
, regs
+ sfb
->variant
.vidtcon
+ 4);
519 data
= VIDTCON2_LINEVAL(var
->yres
- 1) |
520 VIDTCON2_HOZVAL(var
->xres
- 1);
521 writel(data
, regs
+ sfb
->variant
.vidtcon
+ 8);
524 /* write the buffer address */
526 /* start and end registers stride is 8 */
527 buf
= regs
+ win_no
* 8;
529 writel(info
->fix
.smem_start
, buf
+ sfb
->variant
.buf_start
);
531 data
= info
->fix
.smem_start
+ info
->fix
.line_length
* var
->yres
;
532 writel(data
, buf
+ sfb
->variant
.buf_end
);
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
);
537 writel(data
, regs
+ sfb
->variant
.buf_size
+ (win_no
* 4));
539 /* write 'OSD' registers to control position of framebuffer */
541 data
= VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0);
542 writel(data
, regs
+ VIDOSD_A(win_no
, sfb
->variant
));
544 data
= VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var
->bits_per_pixel
,
546 VIDOSDxB_BOTRIGHT_Y(var
->yres
- 1);
548 writel(data
, regs
+ VIDOSD_B(win_no
, sfb
->variant
));
550 data
= var
->xres
* var
->yres
;
552 alpha
= VIDISD14C_ALPHA1_R(0xf) |
553 VIDISD14C_ALPHA1_G(0xf) |
554 VIDISD14C_ALPHA1_B(0xf);
556 vidosd_set_alpha(win
, alpha
);
557 vidosd_set_size(win
, data
);
559 data
= WINCONx_ENWIN
;
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. */
565 switch (var
->bits_per_pixel
) {
567 data
|= WINCON0_BPPMODE_1BPP
;
568 data
|= WINCONx_BITSWP
;
569 data
|= WINCONx_BURSTLEN_4WORD
;
572 data
|= WINCON0_BPPMODE_2BPP
;
573 data
|= WINCONx_BITSWP
;
574 data
|= WINCONx_BURSTLEN_8WORD
;
577 data
|= WINCON0_BPPMODE_4BPP
;
578 data
|= WINCONx_BITSWP
;
579 data
|= WINCONx_BURSTLEN_8WORD
;
582 if (var
->transp
.length
!= 0)
583 data
|= WINCON1_BPPMODE_8BPP_1232
;
585 data
|= WINCON0_BPPMODE_8BPP_PALETTE
;
586 data
|= WINCONx_BURSTLEN_8WORD
;
587 data
|= WINCONx_BYTSWP
;
590 if (var
->transp
.length
!= 0)
591 data
|= WINCON1_BPPMODE_16BPP_A1555
;
593 data
|= WINCON0_BPPMODE_16BPP_565
;
594 data
|= WINCONx_HAWSWP
;
595 data
|= WINCONx_BURSTLEN_16WORD
;
599 if (var
->red
.length
== 6) {
600 if (var
->transp
.length
!= 0)
601 data
|= WINCON1_BPPMODE_19BPP_A1666
;
603 data
|= WINCON1_BPPMODE_18BPP_666
;
604 } else if (var
->transp
.length
== 1)
605 data
|= WINCON1_BPPMODE_25BPP_A1888
607 else if (var
->transp
.length
== 4)
608 data
|= WINCON1_BPPMODE_28BPP_A4888
609 | WINCON1_BLD_PIX
| WINCON1_ALPHA_SEL
;
611 data
|= WINCON0_BPPMODE_24BPP_888
;
613 data
|= WINCONx_WSWP
;
614 data
|= WINCONx_BURSTLEN_16WORD
;
618 /* Enable the colour keying for the window below this one */
620 u32 keycon0_data
= 0, keycon1_data
= 0;
621 void __iomem
*keycon
= regs
+ sfb
->variant
.keycon
;
623 keycon0_data
= ~(WxKEYCON0_KEYBL_EN
|
625 WxKEYCON0_DIRCON
) | WxKEYCON0_COMPKEY(0);
627 keycon1_data
= WxKEYCON1_COLVAL(0xffffff);
629 keycon
+= (win_no
- 1) * 8;
631 writel(keycon0_data
, keycon
+ WKEYCON0
);
632 writel(keycon1_data
, keycon
+ WKEYCON1
);
635 writel(data
, regs
+ sfb
->variant
.wincon
+ (win_no
* 4));
636 writel(0x0, regs
+ sfb
->variant
.winmap
+ (win_no
* 4));
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
);
645 shadow_protect_win(win
, 0);
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.
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.
661 * At the moment, since we have no VSYNC interrupt support, we simply set
662 * the palette entry directly.
664 static void s3c_fb_update_palette(struct s3c_fb
*sfb
,
665 struct s3c_fb_win
*win
,
669 void __iomem
*palreg
;
672 palreg
= sfb
->regs
+ sfb
->variant
.palette
[win
->index
];
674 dev_dbg(sfb
->dev
, "%s: win %d, reg %d (%p): %08x\n",
675 __func__
, win
->index
, reg
, palreg
, value
);
677 win
->palette_buffer
[reg
] = value
;
679 palcon
= readl(sfb
->regs
+ WPALCON
);
680 writel(palcon
| WPALCON_PAL_UPDATE
, sfb
->regs
+ WPALCON
);
682 if (win
->variant
.palette_16bpp
)
683 writew(value
, palreg
+ (reg
* 2));
685 writel(value
, palreg
+ (reg
* 4));
687 writel(palcon
, sfb
->regs
+ WPALCON
);
690 static inline unsigned int chan_to_field(unsigned int chan
,
691 struct fb_bitfield
*bf
)
694 chan
>>= 16 - bf
->length
;
695 return chan
<< bf
->offset
;
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.
707 static int s3c_fb_setcolreg(unsigned regno
,
708 unsigned red
, unsigned green
, unsigned blue
,
709 unsigned transp
, struct fb_info
*info
)
711 struct s3c_fb_win
*win
= info
->par
;
712 struct s3c_fb
*sfb
= win
->parent
;
715 dev_dbg(sfb
->dev
, "%s: win %d: %d => rgb=%d/%d/%d\n",
716 __func__
, win
->index
, regno
, red
, green
, blue
);
718 switch (info
->fix
.visual
) {
719 case FB_VISUAL_TRUECOLOR
:
720 /* true-colour, use pseudo-palette */
723 u32
*pal
= info
->pseudo_palette
;
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
);
733 case FB_VISUAL_PSEUDOCOLOR
:
734 if (regno
< win
->variant
.palette_sz
) {
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
);
739 s3c_fb_update_palette(sfb
, win
, regno
, val
);
745 return 1; /* unknown type */
752 * s3c_fb_enable() - Set the state of the main LCD output
753 * @sfb: The main framebuffer state.
754 * @enable: The state to set.
756 static void s3c_fb_enable(struct s3c_fb
*sfb
, int enable
)
758 u32 vidcon0
= readl(sfb
->regs
+ VIDCON0
);
761 vidcon0
|= VIDCON0_ENVID
| VIDCON0_ENVID_F
;
763 /* see the note in the framebuffer datasheet about
764 * why you cannot take both of these bits down at the
767 if (!(vidcon0
& VIDCON0_ENVID
))
770 vidcon0
|= VIDCON0_ENVID
;
771 vidcon0
&= ~VIDCON0_ENVID_F
;
774 writel(vidcon0
, sfb
->regs
+ VIDCON0
);
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.
782 * Framebuffer layer request to change the power state.
784 static int s3c_fb_blank(int blank_mode
, struct fb_info
*info
)
786 struct s3c_fb_win
*win
= info
->par
;
787 struct s3c_fb
*sfb
= win
->parent
;
788 unsigned int index
= win
->index
;
791 dev_dbg(sfb
->dev
, "blank mode %d\n", blank_mode
);
793 wincon
= readl(sfb
->regs
+ sfb
->variant
.wincon
+ (index
* 4));
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 */
801 case FB_BLANK_NORMAL
:
802 /* disable the DMA and display 0x0 (black) */
803 writel(WINxMAP_MAP
| WINxMAP_MAP_COLOUR(0x0),
804 sfb
->regs
+ sfb
->variant
.winmap
+ (index
* 4));
807 case FB_BLANK_UNBLANK
:
808 writel(0x0, sfb
->regs
+ sfb
->variant
.winmap
+ (index
* 4));
809 wincon
|= WINCONx_ENWIN
;
810 sfb
->enabled
|= (1 << index
);
813 case FB_BLANK_VSYNC_SUSPEND
:
814 case FB_BLANK_HSYNC_SUSPEND
:
819 writel(wincon
, sfb
->regs
+ sfb
->variant
.wincon
+ (index
* 4));
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
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.
832 * s3c_fb_enable(sfb, sfb->enabled ? 1 : 0);
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.
838 if (index
== sfb
->pdata
->default_win
)
839 s3c_fb_enable(sfb
, blank_mode
!= FB_BLANK_POWERDOWN
? 1 : 0);
845 * s3c_fb_pan_display() - Pan the display.
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.
852 * @var: The screen information to verify.
853 * @info: The framebuffer device.
855 static int s3c_fb_pan_display(struct fb_var_screeninfo
*var
,
856 struct fb_info
*info
)
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
;
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);
869 switch (info
->var
.bits_per_pixel
) {
871 start_boff
+= var
->xoffset
>> 1;
874 start_boff
+= var
->xoffset
>> 2;
877 start_boff
+= var
->xoffset
>> 3;
880 dev_err(sfb
->dev
, "invalid bpp\n");
884 /* Offset in bytes to the end of the displayed area */
885 end_boff
= start_boff
+ var
->yres
* info
->fix
.line_length
;
887 /* Temporarily turn off per-vsync update from shadow registers until
888 * both start and end addresses are updated to prevent corruption */
889 shadow_protect_win(win
, 1);
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
);
894 shadow_protect_win(win
, 0);
900 * s3c_fb_enable_irq() - enable framebuffer interrupts
901 * @sfb: main hardware state
903 static void s3c_fb_enable_irq(struct s3c_fb
*sfb
)
905 void __iomem
*regs
= sfb
->regs
;
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
);
912 irq_ctrl_reg
|= VIDINTCON0_INT_ENABLE
;
913 irq_ctrl_reg
|= VIDINTCON0_INT_FRAME
;
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
;
920 writel(irq_ctrl_reg
, regs
+ VIDINTCON0
);
925 * s3c_fb_disable_irq() - disable framebuffer interrupts
926 * @sfb: main hardware state
928 static void s3c_fb_disable_irq(struct s3c_fb
*sfb
)
930 void __iomem
*regs
= sfb
->regs
;
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
);
937 irq_ctrl_reg
&= ~VIDINTCON0_INT_FRAME
;
938 irq_ctrl_reg
&= ~VIDINTCON0_INT_ENABLE
;
940 writel(irq_ctrl_reg
, regs
+ VIDINTCON0
);
944 static irqreturn_t
s3c_fb_irq(int irq
, void *dev_id
)
946 struct s3c_fb
*sfb
= dev_id
;
947 void __iomem
*regs
= sfb
->regs
;
950 irq_sts_reg
= readl(regs
+ VIDINTCON1
);
952 if (irq_sts_reg
& VIDINTCON1_INT_FRAME
) {
954 /* VSYNC interrupt, accept it */
955 writel(VIDINTCON1_INT_FRAME
, regs
+ VIDINTCON1
);
957 sfb
->vsync_info
.count
++;
958 wake_up_interruptible(&sfb
->vsync_info
.wait
);
961 /* We only support waiting for VSYNC for now, so it's safe
962 * to always disable irqs here.
964 s3c_fb_disable_irq(sfb
);
970 * s3c_fb_wait_for_vsync() - sleep until next VSYNC interrupt or timeout
971 * @sfb: main hardware state
974 static int s3c_fb_wait_for_vsync(struct s3c_fb
*sfb
, u32 crtc
)
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
));
993 static int s3c_fb_ioctl(struct fb_info
*info
, unsigned int cmd
,
996 struct s3c_fb_win
*win
= info
->par
;
997 struct s3c_fb
*sfb
= win
->parent
;
1002 case FBIO_WAITFORVSYNC
:
1003 if (get_user(crtc
, (u32 __user
*)arg
)) {
1008 ret
= s3c_fb_wait_for_vsync(sfb
, crtc
);
1017 static int s3c_fb_open(struct fb_info
*info
, int user
)
1019 struct s3c_fb_win
*win
= info
->par
;
1020 struct s3c_fb
*sfb
= win
->parent
;
1022 pm_runtime_get_sync(sfb
->dev
);
1027 static int s3c_fb_release(struct fb_info
*info
, int user
)
1029 struct s3c_fb_win
*win
= info
->par
;
1030 struct s3c_fb
*sfb
= win
->parent
;
1032 pm_runtime_put_sync(sfb
->dev
);
1037 static struct fb_ops s3c_fb_ops
= {
1038 .owner
= THIS_MODULE
,
1039 .fb_open
= s3c_fb_open
,
1040 .fb_release
= s3c_fb_release
,
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
,
1048 .fb_pan_display
= s3c_fb_pan_display
,
1049 .fb_ioctl
= s3c_fb_ioctl
,
1053 * s3c_fb_missing_pixclock() - calculates pixel clock
1054 * @mode: The video mode to change.
1056 * Calculate the pixel clock when none has been given through platform data.
1058 static void __devinit
s3c_fb_missing_pixclock(struct fb_videomode
*mode
)
1060 u64 pixclk
= 1000000000000ULL;
1063 div
= mode
->left_margin
+ mode
->hsync_len
+ mode
->right_margin
+
1065 div
*= mode
->upper_margin
+ mode
->vsync_len
+ mode
->lower_margin
+
1067 div
*= mode
->refresh
? : 60;
1069 do_div(pixclk
, div
);
1071 mode
->pixclock
= pixclk
;
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.
1079 * Allocate memory for the given framebuffer.
1081 static int __devinit
s3c_fb_alloc_memory(struct s3c_fb
*sfb
,
1082 struct s3c_fb_win
*win
)
1084 struct s3c_fb_pd_win
*windata
= win
->windata
;
1085 unsigned int real_size
, virt_size
, size
;
1086 struct fb_info
*fbi
= win
->fbinfo
;
1089 dev_dbg(sfb
->dev
, "allocating memory for display\n");
1091 real_size
= windata
->win_mode
.xres
* windata
->win_mode
.yres
;
1092 virt_size
= windata
->virtual_x
* windata
->virtual_y
;
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
);
1098 size
= (real_size
> virt_size
) ? real_size
: virt_size
;
1099 size
*= (windata
->max_bpp
> 16) ? 32 : windata
->max_bpp
;
1102 fbi
->fix
.smem_len
= size
;
1103 size
= PAGE_ALIGN(size
);
1105 dev_dbg(sfb
->dev
, "want %u bytes for window\n", size
);
1107 fbi
->screen_base
= dma_alloc_writecombine(sfb
->dev
, size
,
1108 &map_dma
, GFP_KERNEL
);
1109 if (!fbi
->screen_base
)
1112 dev_dbg(sfb
->dev
, "mapped %x to %p\n",
1113 (unsigned int)map_dma
, fbi
->screen_base
);
1115 memset(fbi
->screen_base
, 0x0, size
);
1116 fbi
->fix
.smem_start
= map_dma
;
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.
1126 * Free the display memory allocated by s3c_fb_alloc_memory().
1128 static void s3c_fb_free_memory(struct s3c_fb
*sfb
, struct s3c_fb_win
*win
)
1130 struct fb_info
*fbi
= win
->fbinfo
;
1132 if (fbi
->screen_base
)
1133 dma_free_writecombine(sfb
->dev
, PAGE_ALIGN(fbi
->fix
.smem_len
),
1134 fbi
->screen_base
, fbi
->fix
.smem_start
);
1138 * s3c_fb_release_win() - release resources for a framebuffer window.
1139 * @win: The window to cleanup the resources for.
1141 * Release the resources that where claimed for the hardware window,
1142 * such as the framebuffer instance and any memory claimed for it.
1144 static void s3c_fb_release_win(struct s3c_fb
*sfb
, struct s3c_fb_win
*win
)
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
);
1155 unregister_framebuffer(win
->fbinfo
);
1156 if (win
->fbinfo
->cmap
.len
)
1157 fb_dealloc_cmap(&win
->fbinfo
->cmap
);
1158 s3c_fb_free_memory(sfb
, win
);
1159 framebuffer_release(win
->fbinfo
);
1164 * s3c_fb_probe_win() - register an hardware window
1165 * @sfb: The base resources for the hardware
1166 * @variant: The variant information for this window.
1167 * @res: Pointer to where to place the resultant window.
1169 * Allocate and do the basic initialisation for one of the hardware's graphics
1172 static int __devinit
s3c_fb_probe_win(struct s3c_fb
*sfb
, unsigned int win_no
,
1173 struct s3c_fb_win_variant
*variant
,
1174 struct s3c_fb_win
**res
)
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
;
1184 dev_dbg(sfb
->dev
, "probing window %d, variant %p\n", win_no
, variant
);
1186 init_waitqueue_head(&sfb
->vsync_info
.wait
);
1188 palette_size
= variant
->palette_sz
* 4;
1190 fbinfo
= framebuffer_alloc(sizeof(struct s3c_fb_win
) +
1191 palette_size
* sizeof(u32
), sfb
->dev
);
1193 dev_err(sfb
->dev
, "failed to allocate framebuffer\n");
1197 windata
= sfb
->pdata
->win
[win_no
];
1198 initmode
= &windata
->win_mode
;
1200 WARN_ON(windata
->max_bpp
== 0);
1201 WARN_ON(windata
->win_mode
.xres
== 0);
1202 WARN_ON(windata
->win_mode
.yres
== 0);
1207 win
->variant
= *variant
;
1208 win
->fbinfo
= fbinfo
;
1210 win
->windata
= windata
;
1211 win
->index
= win_no
;
1212 win
->palette_buffer
= (u32
*)(win
+ 1);
1214 ret
= s3c_fb_alloc_memory(sfb
, win
);
1216 dev_err(sfb
->dev
, "failed to allocate display memory\n");
1220 /* setup the r/b/g positions for the window's palette */
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;
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;
1240 /* setup the initial video mode from the window */
1241 fb_videomode_to_var(&fbinfo
->var
, initmode
);
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
;
1252 /* prepare to actually start the framebuffer */
1254 ret
= s3c_fb_check_var(&fbinfo
->var
, fbinfo
);
1256 dev_err(sfb
->dev
, "check_var failed on initial video params\n");
1260 /* create initial colour map */
1262 ret
= fb_alloc_cmap(&fbinfo
->cmap
, win
->variant
.palette_sz
, 1);
1264 fb_set_cmap(&fbinfo
->cmap
, fbinfo
);
1266 dev_err(sfb
->dev
, "failed to allocate fb cmap\n");
1268 s3c_fb_set_par(fbinfo
);
1270 dev_dbg(sfb
->dev
, "about to register framebuffer\n");
1272 /* run the check_var and set_par on our configuration. */
1274 ret
= register_framebuffer(fbinfo
);
1276 dev_err(sfb
->dev
, "failed to register framebuffer\n");
1280 dev_info(sfb
->dev
, "window %d: fb %s\n", win_no
, fbinfo
->fix
.id
);
1286 * s3c_fb_clear_win() - clear hardware window registers.
1287 * @sfb: The base resources for the hardware.
1288 * @win: The window to process.
1290 * Reset the specific window registers to a known state.
1292 static void s3c_fb_clear_win(struct s3c_fb
*sfb
, int win
)
1294 void __iomem
*regs
= sfb
->regs
;
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
));
1301 reg
= readl(regs
+ SHADOWCON
);
1302 writel(reg
& ~SHADOWCON_WINx_PROTECT(win
), regs
+ SHADOWCON
);
1305 static int __devinit
s3c_fb_probe(struct platform_device
*pdev
)
1307 const struct platform_device_id
*platid
;
1308 struct s3c_fb_driverdata
*fbdrv
;
1309 struct device
*dev
= &pdev
->dev
;
1310 struct s3c_fb_platdata
*pd
;
1312 struct resource
*res
;
1316 platid
= platform_get_device_id(pdev
);
1317 fbdrv
= (struct s3c_fb_driverdata
*)platid
->driver_data
;
1319 if (fbdrv
->variant
.nr_windows
> S3C_FB_MAX_WIN
) {
1320 dev_err(dev
, "too many windows, cannot attach\n");
1324 pd
= pdev
->dev
.platform_data
;
1326 dev_err(dev
, "no platform data specified\n");
1330 sfb
= kzalloc(sizeof(struct s3c_fb
), GFP_KERNEL
);
1332 dev_err(dev
, "no memory for framebuffers\n");
1336 dev_dbg(dev
, "allocate new framebuffer %p\n", sfb
);
1340 sfb
->variant
= fbdrv
->variant
;
1342 sfb
->bus_clk
= clk_get(dev
, "lcd");
1343 if (IS_ERR(sfb
->bus_clk
)) {
1344 dev_err(dev
, "failed to get bus clock\n");
1345 ret
= PTR_ERR(sfb
->bus_clk
);
1349 clk_enable(sfb
->bus_clk
);
1351 pm_runtime_enable(sfb
->dev
);
1353 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1355 dev_err(dev
, "failed to find registers\n");
1360 sfb
->regs_res
= request_mem_region(res
->start
, resource_size(res
),
1362 if (!sfb
->regs_res
) {
1363 dev_err(dev
, "failed to claim register region\n");
1368 sfb
->regs
= ioremap(res
->start
, resource_size(res
));
1370 dev_err(dev
, "failed to map registers\n");
1372 goto err_req_region
;
1375 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
1377 dev_err(dev
, "failed to acquire irq resource\n");
1381 sfb
->irq_no
= res
->start
;
1382 ret
= request_irq(sfb
->irq_no
, s3c_fb_irq
,
1385 dev_err(dev
, "irq request failed\n");
1389 dev_dbg(dev
, "got resources (regs %p), probing windows\n", sfb
->regs
);
1391 platform_set_drvdata(pdev
, sfb
);
1392 pm_runtime_get_sync(sfb
->dev
);
1394 /* setup gpio and output polarity controls */
1398 writel(pd
->vidcon1
, sfb
->regs
+ VIDCON1
);
1400 /* zero all windows before we do anything */
1402 for (win
= 0; win
< fbdrv
->variant
.nr_windows
; win
++)
1403 s3c_fb_clear_win(sfb
, win
);
1405 /* initialise colour key controls */
1406 for (win
= 0; win
< (fbdrv
->variant
.nr_windows
- 1); win
++) {
1407 void __iomem
*regs
= sfb
->regs
+ sfb
->variant
.keycon
;
1410 writel(0xffffff, regs
+ WKEYCON0
);
1411 writel(0xffffff, regs
+ WKEYCON1
);
1414 /* we have the register setup, start allocating framebuffers */
1416 for (win
= 0; win
< fbdrv
->variant
.nr_windows
; win
++) {
1420 if (!pd
->win
[win
]->win_mode
.pixclock
)
1421 s3c_fb_missing_pixclock(&pd
->win
[win
]->win_mode
);
1423 ret
= s3c_fb_probe_win(sfb
, win
, fbdrv
->win
[win
],
1424 &sfb
->windows
[win
]);
1426 dev_err(dev
, "failed to create window %d\n", win
);
1427 for (; win
>= 0; win
--)
1428 s3c_fb_release_win(sfb
, sfb
->windows
[win
]);
1433 platform_set_drvdata(pdev
, sfb
);
1434 pm_runtime_put_sync(sfb
->dev
);
1439 free_irq(sfb
->irq_no
, sfb
);
1445 release_resource(sfb
->regs_res
);
1446 kfree(sfb
->regs_res
);
1449 clk_disable(sfb
->bus_clk
);
1450 clk_put(sfb
->bus_clk
);
1458 * s3c_fb_remove() - Cleanup on module finalisation
1459 * @pdev: The platform device we are bound to.
1461 * Shutdown and then release all the resources that the driver allocated
1462 * on initialisation.
1464 static int __devexit
s3c_fb_remove(struct platform_device
*pdev
)
1466 struct s3c_fb
*sfb
= platform_get_drvdata(pdev
);
1469 pm_runtime_get_sync(sfb
->dev
);
1471 for (win
= 0; win
< S3C_FB_MAX_WIN
; win
++)
1472 if (sfb
->windows
[win
])
1473 s3c_fb_release_win(sfb
, sfb
->windows
[win
]);
1475 free_irq(sfb
->irq_no
, sfb
);
1479 clk_disable(sfb
->bus_clk
);
1480 clk_put(sfb
->bus_clk
);
1482 release_resource(sfb
->regs_res
);
1483 kfree(sfb
->regs_res
);
1487 pm_runtime_put_sync(sfb
->dev
);
1488 pm_runtime_disable(sfb
->dev
);
1494 static int s3c_fb_suspend(struct device
*dev
)
1496 struct platform_device
*pdev
= to_platform_device(dev
);
1497 struct s3c_fb
*sfb
= platform_get_drvdata(pdev
);
1498 struct s3c_fb_win
*win
;
1501 for (win_no
= S3C_FB_MAX_WIN
- 1; win_no
>= 0; win_no
--) {
1502 win
= sfb
->windows
[win_no
];
1506 /* use the blank function to push into power-down */
1507 s3c_fb_blank(FB_BLANK_POWERDOWN
, win
->fbinfo
);
1510 clk_disable(sfb
->bus_clk
);
1514 static int s3c_fb_resume(struct device
*dev
)
1516 struct platform_device
*pdev
= to_platform_device(dev
);
1517 struct s3c_fb
*sfb
= platform_get_drvdata(pdev
);
1518 struct s3c_fb_platdata
*pd
= sfb
->pdata
;
1519 struct s3c_fb_win
*win
;
1522 clk_enable(sfb
->bus_clk
);
1524 /* setup registers */
1525 writel(pd
->vidcon1
, sfb
->regs
+ VIDCON1
);
1527 /* zero all windows before we do anything */
1528 for (win_no
= 0; win_no
< sfb
->variant
.nr_windows
; win_no
++)
1529 s3c_fb_clear_win(sfb
, win_no
);
1531 for (win_no
= 0; win_no
< sfb
->variant
.nr_windows
- 1; win_no
++) {
1532 void __iomem
*regs
= sfb
->regs
+ sfb
->variant
.keycon
;
1534 regs
+= (win_no
* 8);
1535 writel(0xffffff, regs
+ WKEYCON0
);
1536 writel(0xffffff, regs
+ WKEYCON1
);
1539 /* restore framebuffers */
1540 for (win_no
= 0; win_no
< S3C_FB_MAX_WIN
; win_no
++) {
1541 win
= sfb
->windows
[win_no
];
1545 dev_dbg(&pdev
->dev
, "resuming window %d\n", win_no
);
1546 s3c_fb_set_par(win
->fbinfo
);
1552 static int s3c_fb_runtime_suspend(struct device
*dev
)
1554 struct platform_device
*pdev
= to_platform_device(dev
);
1555 struct s3c_fb
*sfb
= platform_get_drvdata(pdev
);
1556 struct s3c_fb_win
*win
;
1559 for (win_no
= S3C_FB_MAX_WIN
- 1; win_no
>= 0; win_no
--) {
1560 win
= sfb
->windows
[win_no
];
1564 /* use the blank function to push into power-down */
1565 s3c_fb_blank(FB_BLANK_POWERDOWN
, win
->fbinfo
);
1568 clk_disable(sfb
->bus_clk
);
1572 static int s3c_fb_runtime_resume(struct device
*dev
)
1574 struct platform_device
*pdev
= to_platform_device(dev
);
1575 struct s3c_fb
*sfb
= platform_get_drvdata(pdev
);
1576 struct s3c_fb_platdata
*pd
= sfb
->pdata
;
1577 struct s3c_fb_win
*win
;
1580 clk_enable(sfb
->bus_clk
);
1582 /* setup registers */
1583 writel(pd
->vidcon1
, sfb
->regs
+ VIDCON1
);
1585 /* zero all windows before we do anything */
1586 for (win_no
= 0; win_no
< sfb
->variant
.nr_windows
; win_no
++)
1587 s3c_fb_clear_win(sfb
, win_no
);
1589 for (win_no
= 0; win_no
< sfb
->variant
.nr_windows
- 1; win_no
++) {
1590 void __iomem
*regs
= sfb
->regs
+ sfb
->variant
.keycon
;
1592 regs
+= (win_no
* 8);
1593 writel(0xffffff, regs
+ WKEYCON0
);
1594 writel(0xffffff, regs
+ WKEYCON1
);
1597 /* restore framebuffers */
1598 for (win_no
= 0; win_no
< S3C_FB_MAX_WIN
; win_no
++) {
1599 win
= sfb
->windows
[win_no
];
1603 dev_dbg(&pdev
->dev
, "resuming window %d\n", win_no
);
1604 s3c_fb_set_par(win
->fbinfo
);
1611 #define s3c_fb_suspend NULL
1612 #define s3c_fb_resume NULL
1613 #define s3c_fb_runtime_suspend NULL
1614 #define s3c_fb_runtime_resume NULL
1618 #define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4))
1619 #define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8))
1621 static struct s3c_fb_win_variant s3c_fb_data_64xx_wins
[] = {
1624 .osd_size_off
= 0x8,
1626 .valid_bpp
= VALID_BPP1248
| VALID_BPP(16) | VALID_BPP(24),
1631 .osd_size_off
= 0x12,
1634 .valid_bpp
= (VALID_BPP1248
| VALID_BPP(16) |
1635 VALID_BPP(18) | VALID_BPP(19) |
1636 VALID_BPP(24) | VALID_BPP(25)),
1641 .osd_size_off
= 0x12,
1645 .valid_bpp
= (VALID_BPP1248
| VALID_BPP(16) |
1646 VALID_BPP(18) | VALID_BPP(19) |
1647 VALID_BPP(24) | VALID_BPP(25)),
1654 .valid_bpp
= (VALID_BPP124
| VALID_BPP(16) |
1655 VALID_BPP(18) | VALID_BPP(19) |
1656 VALID_BPP(24) | VALID_BPP(25)),
1663 .valid_bpp
= (VALID_BPP(1) | VALID_BPP(2) |
1664 VALID_BPP(16) | VALID_BPP(18) |
1665 VALID_BPP(24) | VALID_BPP(25)),
1669 static struct s3c_fb_driverdata s3c_fb_data_64xx
= {
1672 .vidtcon
= VIDTCON0
,
1673 .wincon
= WINCON(0),
1674 .winmap
= WINxMAP(0),
1678 .buf_start
= VIDW_BUF_START(0),
1679 .buf_size
= VIDW_BUF_SIZE(0),
1680 .buf_end
= VIDW_BUF_END(0),
1692 .win
[0] = &s3c_fb_data_64xx_wins
[0],
1693 .win
[1] = &s3c_fb_data_64xx_wins
[1],
1694 .win
[2] = &s3c_fb_data_64xx_wins
[2],
1695 .win
[3] = &s3c_fb_data_64xx_wins
[3],
1696 .win
[4] = &s3c_fb_data_64xx_wins
[4],
1699 static struct s3c_fb_driverdata s3c_fb_data_s5pc100
= {
1702 .vidtcon
= VIDTCON0
,
1703 .wincon
= WINCON(0),
1704 .winmap
= WINxMAP(0),
1708 .buf_start
= VIDW_BUF_START(0),
1709 .buf_size
= VIDW_BUF_SIZE(0),
1710 .buf_end
= VIDW_BUF_END(0),
1722 .win
[0] = &s3c_fb_data_64xx_wins
[0],
1723 .win
[1] = &s3c_fb_data_64xx_wins
[1],
1724 .win
[2] = &s3c_fb_data_64xx_wins
[2],
1725 .win
[3] = &s3c_fb_data_64xx_wins
[3],
1726 .win
[4] = &s3c_fb_data_64xx_wins
[4],
1729 static struct s3c_fb_driverdata s3c_fb_data_s5pv210
= {
1732 .vidtcon
= VIDTCON0
,
1733 .wincon
= WINCON(0),
1734 .winmap
= WINxMAP(0),
1738 .buf_start
= VIDW_BUF_START(0),
1739 .buf_size
= VIDW_BUF_SIZE(0),
1740 .buf_end
= VIDW_BUF_END(0),
1752 .win
[0] = &s3c_fb_data_64xx_wins
[0],
1753 .win
[1] = &s3c_fb_data_64xx_wins
[1],
1754 .win
[2] = &s3c_fb_data_64xx_wins
[2],
1755 .win
[3] = &s3c_fb_data_64xx_wins
[3],
1756 .win
[4] = &s3c_fb_data_64xx_wins
[4],
1759 /* S3C2443/S3C2416 style hardware */
1760 static struct s3c_fb_driverdata s3c_fb_data_s3c2443
= {
1780 .win
[0] = &(struct s3c_fb_win_variant
) {
1782 .valid_bpp
= VALID_BPP1248
| VALID_BPP(16) | VALID_BPP(24),
1784 .win
[1] = &(struct s3c_fb_win_variant
) {
1788 .valid_bpp
= (VALID_BPP1248
| VALID_BPP(16) |
1789 VALID_BPP(18) | VALID_BPP(19) |
1790 VALID_BPP(24) | VALID_BPP(25) |
1795 static struct platform_device_id s3c_fb_driver_ids
[] = {
1798 .driver_data
= (unsigned long)&s3c_fb_data_64xx
,
1800 .name
= "s5pc100-fb",
1801 .driver_data
= (unsigned long)&s3c_fb_data_s5pc100
,
1803 .name
= "s5pv210-fb",
1804 .driver_data
= (unsigned long)&s3c_fb_data_s5pv210
,
1806 .name
= "s3c2443-fb",
1807 .driver_data
= (unsigned long)&s3c_fb_data_s3c2443
,
1811 MODULE_DEVICE_TABLE(platform
, s3c_fb_driver_ids
);
1813 static const struct dev_pm_ops s3cfb_pm_ops
= {
1814 .suspend
= s3c_fb_suspend
,
1815 .resume
= s3c_fb_resume
,
1816 .runtime_suspend
= s3c_fb_runtime_suspend
,
1817 .runtime_resume
= s3c_fb_runtime_resume
,
1820 static struct platform_driver s3c_fb_driver
= {
1821 .probe
= s3c_fb_probe
,
1822 .remove
= __devexit_p(s3c_fb_remove
),
1823 .id_table
= s3c_fb_driver_ids
,
1826 .owner
= THIS_MODULE
,
1827 .pm
= &s3cfb_pm_ops
,
1831 static int __init
s3c_fb_init(void)
1833 return platform_driver_register(&s3c_fb_driver
);
1836 static void __exit
s3c_fb_cleanup(void)
1838 platform_driver_unregister(&s3c_fb_driver
);
1841 module_init(s3c_fb_init
);
1842 module_exit(s3c_fb_cleanup
);
1844 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
1845 MODULE_DESCRIPTION("Samsung S3C SoC Framebuffer driver");
1846 MODULE_LICENSE("GPL");
1847 MODULE_ALIAS("platform:s3c-fb");