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>
28 #include <plat/regs-fb-v4.h>
31 /* This driver will export a number of framebuffer interfaces depending
32 * on the configuration passed in via the platform data. Each fb instance
33 * maps to a hardware window. Currently there is no support for runtime
34 * setting of the alpha-blending functions that each window has, so only
35 * window 0 is actually useful.
37 * Window 0 is treated specially, it is used for the basis of the LCD
38 * output timings and as the control for the output power-down state.
41 /* note, the previous use of <mach/regs-fb.h> to get platform specific data
42 * has been replaced by using the platform device name to pick the correct
43 * configuration data for the system.
46 #ifdef CONFIG_FB_S3C_DEBUG_REGWRITE
48 #define writel(v, r) do { \
49 printk(KERN_DEBUG "%s: %08x => %p\n", __func__, (unsigned int)v, r); \
50 __raw_writel(v, r); } while(0)
51 #endif /* FB_S3C_DEBUG_REGWRITE */
54 #define S3C_FB_VSYNC_IRQ_EN 0
56 #define VSYNC_TIMEOUT_MSEC 50
60 #define VALID_BPP(x) (1 << ((x) - 1))
62 #define OSD_BASE(win, variant) ((variant).osd + ((win) * (variant).osd_stride))
63 #define VIDOSD_A(win, variant) (OSD_BASE(win, variant) + 0x00)
64 #define VIDOSD_B(win, variant) (OSD_BASE(win, variant) + 0x04)
65 #define VIDOSD_C(win, variant) (OSD_BASE(win, variant) + 0x08)
66 #define VIDOSD_D(win, variant) (OSD_BASE(win, variant) + 0x0C)
69 * struct s3c_fb_variant - fb variant information
70 * @is_2443: Set if S3C2443/S3C2416 style hardware.
71 * @nr_windows: The number of windows.
72 * @vidtcon: The base for the VIDTCONx registers
73 * @wincon: The base for the WINxCON registers.
74 * @winmap: The base for the WINxMAP registers.
75 * @keycon: The abse for the WxKEYCON registers.
76 * @buf_start: Offset of buffer start registers.
77 * @buf_size: Offset of buffer size registers.
78 * @buf_end: Offset of buffer end registers.
79 * @osd: The base for the OSD registers.
80 * @palette: Address of palette memory, or 0 if none.
81 * @has_prtcon: Set if has PRTCON register.
82 * @has_shadowcon: Set if has SHADOWCON register.
84 struct s3c_fb_variant {
85 unsigned int is_2443:1;
86 unsigned short nr_windows;
87 unsigned short vidtcon;
88 unsigned short wincon;
89 unsigned short winmap;
90 unsigned short keycon;
91 unsigned short buf_start;
92 unsigned short buf_end;
93 unsigned short buf_size;
95 unsigned short osd_stride;
96 unsigned short palette[S3C_FB_MAX_WIN];
98 unsigned int has_prtcon:1;
99 unsigned int has_shadowcon:1;
103 * struct s3c_fb_win_variant
104 * @has_osd_c: Set if has OSD C register.
105 * @has_osd_d: Set if has OSD D register.
106 * @has_osd_alpha: Set if can change alpha transparency for a window.
107 * @palette_sz: Size of palette in entries.
108 * @palette_16bpp: Set if palette is 16bits wide.
109 * @osd_size_off: If != 0, supports setting up OSD for a window; the appropriate
110 * register is located at the given offset from OSD_BASE.
111 * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel.
113 * valid_bpp bit x is set if (x+1)BPP is supported.
115 struct s3c_fb_win_variant {
116 unsigned int has_osd_c:1;
117 unsigned int has_osd_d:1;
118 unsigned int has_osd_alpha:1;
119 unsigned int palette_16bpp:1;
120 unsigned short osd_size_off;
121 unsigned short palette_sz;
126 * struct s3c_fb_driverdata - per-device type driver data for init time.
127 * @variant: The variant information for this driver.
128 * @win: The window information for each window.
130 struct s3c_fb_driverdata {
131 struct s3c_fb_variant variant;
132 struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN];
136 * struct s3c_fb_palette - palette information
138 * @g: Green bitfield.
140 * @a: Alpha bitfield.
142 struct s3c_fb_palette {
143 struct fb_bitfield r;
144 struct fb_bitfield g;
145 struct fb_bitfield b;
146 struct fb_bitfield a;
150 * struct s3c_fb_win - per window private data for each framebuffer.
151 * @windata: The platform data supplied for the window configuration.
152 * @parent: The hardware that this window is part of.
153 * @fbinfo: Pointer pack to the framebuffer info for this window.
154 * @varint: The variant information for this window.
155 * @palette_buffer: Buffer/cache to hold palette entries.
156 * @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/
157 * @index: The window number of this window.
158 * @palette: The bitfields for changing r/g/b into a hardware palette entry.
161 struct s3c_fb_pd_win *windata;
162 struct s3c_fb *parent;
163 struct fb_info *fbinfo;
164 struct s3c_fb_palette palette;
165 struct s3c_fb_win_variant variant;
168 u32 pseudo_palette[16];
173 * struct s3c_fb_vsync - vsync information
174 * @wait: a queue for processes waiting for vsync
175 * @count: vsync interrupt count
177 struct s3c_fb_vsync {
178 wait_queue_head_t wait;
183 * struct s3c_fb - overall hardware state of the hardware
184 * @dev: The device that we bound to, for printing, etc.
185 * @regs_res: The resource we claimed for the IO registers.
186 * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk.
187 * @regs: The mapped hardware registers.
188 * @variant: Variant information for this hardware.
189 * @enabled: A bitmask of enabled hardware windows.
190 * @pdata: The platform configuration data passed with the device.
191 * @windows: The hardware windows that have been claimed.
192 * @irq_no: IRQ line number
193 * @irq_flags: irq flags
194 * @vsync_info: VSYNC-related information (count, queues...)
198 struct resource *regs_res;
201 struct s3c_fb_variant variant;
203 unsigned char enabled;
205 struct s3c_fb_platdata *pdata;
206 struct s3c_fb_win *windows[S3C_FB_MAX_WIN];
209 unsigned long irq_flags;
210 struct s3c_fb_vsync vsync_info;
214 * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode.
215 * @win: The device window.
216 * @bpp: The bit depth.
218 static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp)
220 return win->variant.valid_bpp & VALID_BPP(bpp);
224 * s3c_fb_check_var() - framebuffer layer request to verify a given mode.
225 * @var: The screen information to verify.
226 * @info: The framebuffer device.
228 * Framebuffer layer call to verify the given information and allow us to
229 * update various information depending on the hardware capabilities.
231 static int s3c_fb_check_var(struct fb_var_screeninfo *var,
232 struct fb_info *info)
234 struct s3c_fb_win *win = info->par;
235 struct s3c_fb_pd_win *windata = win->windata;
236 struct s3c_fb *sfb = win->parent;
238 dev_dbg(sfb->dev, "checking parameters\n");
240 var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres);
241 var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres);
243 if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) {
244 dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n",
245 win->index, var->bits_per_pixel);
249 /* always ensure these are zero, for drop through cases below */
250 var->transp.offset = 0;
251 var->transp.length = 0;
253 switch (var->bits_per_pixel) {
258 if (sfb->variant.palette[win->index] != 0) {
259 /* non palletised, A:1,R:2,G:3,B:2 mode */
261 var->green.offset = 2;
262 var->blue.offset = 0;
264 var->green.length = 3;
265 var->blue.length = 2;
266 var->transp.offset = 7;
267 var->transp.length = 1;
270 var->red.length = var->bits_per_pixel;
271 var->green = var->red;
272 var->blue = var->red;
277 /* 666 with one bit alpha/transparency */
278 var->transp.offset = 18;
279 var->transp.length = 1;
281 var->bits_per_pixel = 32;
284 var->red.offset = 12;
285 var->green.offset = 6;
286 var->blue.offset = 0;
288 var->green.length = 6;
289 var->blue.length = 6;
293 /* 16 bpp, 565 format */
294 var->red.offset = 11;
295 var->green.offset = 5;
296 var->blue.offset = 0;
298 var->green.length = 6;
299 var->blue.length = 5;
304 var->transp.length = var->bits_per_pixel - 24;
305 var->transp.offset = 24;
308 /* our 24bpp is unpacked, so 32bpp */
309 var->bits_per_pixel = 32;
311 var->red.offset = 16;
313 var->green.offset = 8;
314 var->green.length = 8;
315 var->blue.offset = 0;
316 var->blue.length = 8;
320 dev_err(sfb->dev, "invalid bpp\n");
323 dev_dbg(sfb->dev, "%s: verified parameters\n", __func__);
328 * s3c_fb_calc_pixclk() - calculate the divider to create the pixel clock.
329 * @sfb: The hardware state.
330 * @pixclock: The pixel clock wanted, in picoseconds.
332 * Given the specified pixel clock, work out the necessary divider to get
333 * close to the output frequency.
335 static int s3c_fb_calc_pixclk(struct s3c_fb *sfb, unsigned int pixclk)
337 unsigned long clk = clk_get_rate(sfb->bus_clk);
338 unsigned long long tmp;
341 tmp = (unsigned long long)clk;
344 do_div(tmp, 1000000000UL);
345 result = (unsigned int)tmp / 1000;
347 dev_dbg(sfb->dev, "pixclk=%u, clk=%lu, div=%d (%lu)\n",
348 pixclk, clk, result, clk / result);
354 * s3c_fb_align_word() - align pixel count to word boundary
355 * @bpp: The number of bits per pixel
356 * @pix: The value to be aligned.
358 * Align the given pixel count so that it will start on an 32bit word
361 static int s3c_fb_align_word(unsigned int bpp, unsigned int pix)
368 pix_per_word = (8 * 32) / bpp;
369 return ALIGN(pix, pix_per_word);
373 * vidosd_set_size() - set OSD size for a window
375 * @win: the window to set OSD size for
376 * @size: OSD size register value
378 static void vidosd_set_size(struct s3c_fb_win *win, u32 size)
380 struct s3c_fb *sfb = win->parent;
382 /* OSD can be set up if osd_size_off != 0 for this window */
383 if (win->variant.osd_size_off)
384 writel(size, sfb->regs + OSD_BASE(win->index, sfb->variant)
385 + win->variant.osd_size_off);
389 * vidosd_set_alpha() - set alpha transparency for a window
391 * @win: the window to set OSD size for
392 * @alpha: alpha register value
394 static void vidosd_set_alpha(struct s3c_fb_win *win, u32 alpha)
396 struct s3c_fb *sfb = win->parent;
398 if (win->variant.has_osd_alpha)
399 writel(alpha, sfb->regs + VIDOSD_C(win->index, sfb->variant));
403 * shadow_protect_win() - disable updating values from shadow registers at vsync
405 * @win: window to protect registers for
406 * @protect: 1 to protect (disable updates)
408 static void shadow_protect_win(struct s3c_fb_win *win, bool protect)
410 struct s3c_fb *sfb = win->parent;
414 if (sfb->variant.has_prtcon) {
415 writel(PRTCON_PROTECT, sfb->regs + PRTCON);
416 } else if (sfb->variant.has_shadowcon) {
417 reg = readl(sfb->regs + SHADOWCON);
418 writel(reg | SHADOWCON_WINx_PROTECT(win->index),
419 sfb->regs + SHADOWCON);
422 if (sfb->variant.has_prtcon) {
423 writel(0, sfb->regs + PRTCON);
424 } else if (sfb->variant.has_shadowcon) {
425 reg = readl(sfb->regs + SHADOWCON);
426 writel(reg & ~SHADOWCON_WINx_PROTECT(win->index),
427 sfb->regs + SHADOWCON);
433 * s3c_fb_set_par() - framebuffer request to set new framebuffer state.
434 * @info: The framebuffer to change.
436 * Framebuffer layer request to set a new mode for the specified framebuffer
438 static int s3c_fb_set_par(struct fb_info *info)
440 struct fb_var_screeninfo *var = &info->var;
441 struct s3c_fb_win *win = info->par;
442 struct s3c_fb *sfb = win->parent;
443 void __iomem *regs = sfb->regs;
444 void __iomem *buf = regs;
445 int win_no = win->index;
451 dev_dbg(sfb->dev, "setting framebuffer parameters\n");
453 shadow_protect_win(win, 1);
455 switch (var->bits_per_pixel) {
460 info->fix.visual = FB_VISUAL_TRUECOLOR;
463 if (win->variant.palette_sz >= 256)
464 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
466 info->fix.visual = FB_VISUAL_TRUECOLOR;
469 info->fix.visual = FB_VISUAL_MONO01;
472 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
476 info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8;
478 info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
479 info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
481 /* disable the window whilst we update it */
482 writel(0, regs + WINCON(win_no));
484 /* use platform specified window as the basis for the lcd timings */
486 if (win_no == sfb->pdata->default_win) {
487 clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock);
489 data = sfb->pdata->vidcon0;
490 data &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR);
493 data |= VIDCON0_CLKVAL_F(clkdiv-1) | VIDCON0_CLKDIR;
495 data &= ~VIDCON0_CLKDIR; /* 1:1 clock */
497 /* write the timing data to the panel */
499 if (sfb->variant.is_2443)
502 data |= VIDCON0_ENVID | VIDCON0_ENVID_F;
503 writel(data, regs + VIDCON0);
505 data = VIDTCON0_VBPD(var->upper_margin - 1) |
506 VIDTCON0_VFPD(var->lower_margin - 1) |
507 VIDTCON0_VSPW(var->vsync_len - 1);
509 writel(data, regs + sfb->variant.vidtcon);
511 data = VIDTCON1_HBPD(var->left_margin - 1) |
512 VIDTCON1_HFPD(var->right_margin - 1) |
513 VIDTCON1_HSPW(var->hsync_len - 1);
516 writel(data, regs + sfb->variant.vidtcon + 4);
518 data = VIDTCON2_LINEVAL(var->yres - 1) |
519 VIDTCON2_HOZVAL(var->xres - 1);
520 writel(data, regs +sfb->variant.vidtcon + 8 );
523 /* write the buffer address */
525 /* start and end registers stride is 8 */
526 buf = regs + win_no * 8;
528 writel(info->fix.smem_start, buf + sfb->variant.buf_start);
530 data = info->fix.smem_start + info->fix.line_length * var->yres;
531 writel(data, buf + sfb->variant.buf_end);
533 pagewidth = (var->xres * var->bits_per_pixel) >> 3;
534 data = VIDW_BUF_SIZE_OFFSET(info->fix.line_length - pagewidth) |
535 VIDW_BUF_SIZE_PAGEWIDTH(pagewidth);
536 writel(data, regs + sfb->variant.buf_size + (win_no * 4));
538 /* write 'OSD' registers to control position of framebuffer */
540 data = VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0);
541 writel(data, regs + VIDOSD_A(win_no, sfb->variant));
543 data = VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var->bits_per_pixel,
545 VIDOSDxB_BOTRIGHT_Y(var->yres - 1);
547 writel(data, regs + VIDOSD_B(win_no, sfb->variant));
549 data = var->xres * var->yres;
551 alpha = VIDISD14C_ALPHA1_R(0xf) |
552 VIDISD14C_ALPHA1_G(0xf) |
553 VIDISD14C_ALPHA1_B(0xf);
555 vidosd_set_alpha(win, alpha);
556 vidosd_set_size(win, data);
558 data = WINCONx_ENWIN;
560 /* note, since we have to round up the bits-per-pixel, we end up
561 * relying on the bitfield information for r/g/b/a to work out
562 * exactly which mode of operation is intended. */
564 switch (var->bits_per_pixel) {
566 data |= WINCON0_BPPMODE_1BPP;
567 data |= WINCONx_BITSWP;
568 data |= WINCONx_BURSTLEN_4WORD;
571 data |= WINCON0_BPPMODE_2BPP;
572 data |= WINCONx_BITSWP;
573 data |= WINCONx_BURSTLEN_8WORD;
576 data |= WINCON0_BPPMODE_4BPP;
577 data |= WINCONx_BITSWP;
578 data |= WINCONx_BURSTLEN_8WORD;
581 if (var->transp.length != 0)
582 data |= WINCON1_BPPMODE_8BPP_1232;
584 data |= WINCON0_BPPMODE_8BPP_PALETTE;
585 data |= WINCONx_BURSTLEN_8WORD;
586 data |= WINCONx_BYTSWP;
589 if (var->transp.length != 0)
590 data |= WINCON1_BPPMODE_16BPP_A1555;
592 data |= WINCON0_BPPMODE_16BPP_565;
593 data |= WINCONx_HAWSWP;
594 data |= WINCONx_BURSTLEN_16WORD;
598 if (var->red.length == 6) {
599 if (var->transp.length != 0)
600 data |= WINCON1_BPPMODE_19BPP_A1666;
602 data |= WINCON1_BPPMODE_18BPP_666;
603 } else if (var->transp.length == 1)
604 data |= WINCON1_BPPMODE_25BPP_A1888
606 else if (var->transp.length == 4)
607 data |= WINCON1_BPPMODE_28BPP_A4888
608 | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL;
610 data |= WINCON0_BPPMODE_24BPP_888;
612 data |= WINCONx_WSWP;
613 data |= WINCONx_BURSTLEN_16WORD;
617 /* Enable the colour keying for the window below this one */
619 u32 keycon0_data = 0, keycon1_data = 0;
620 void __iomem *keycon = regs + sfb->variant.keycon;
622 keycon0_data = ~(WxKEYCON0_KEYBL_EN |
624 WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
626 keycon1_data = WxKEYCON1_COLVAL(0xffffff);
628 keycon += (win_no - 1) * 8;
630 writel(keycon0_data, keycon + WKEYCON0);
631 writel(keycon1_data, keycon + WKEYCON1);
634 writel(data, regs + sfb->variant.wincon + (win_no * 4));
635 writel(0x0, regs + sfb->variant.winmap + (win_no * 4));
637 shadow_protect_win(win, 0);
643 * s3c_fb_update_palette() - set or schedule a palette update.
644 * @sfb: The hardware information.
645 * @win: The window being updated.
646 * @reg: The palette index being changed.
647 * @value: The computed palette value.
649 * Change the value of a palette register, either by directly writing to
650 * the palette (this requires the palette RAM to be disconnected from the
651 * hardware whilst this is in progress) or schedule the update for later.
653 * At the moment, since we have no VSYNC interrupt support, we simply set
654 * the palette entry directly.
656 static void s3c_fb_update_palette(struct s3c_fb *sfb,
657 struct s3c_fb_win *win,
661 void __iomem *palreg;
664 palreg = sfb->regs + sfb->variant.palette[win->index];
666 dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n",
667 __func__, win->index, reg, palreg, value);
669 win->palette_buffer[reg] = value;
671 palcon = readl(sfb->regs + WPALCON);
672 writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON);
674 if (win->variant.palette_16bpp)
675 writew(value, palreg + (reg * 2));
677 writel(value, palreg + (reg * 4));
679 writel(palcon, sfb->regs + WPALCON);
682 static inline unsigned int chan_to_field(unsigned int chan,
683 struct fb_bitfield *bf)
686 chan >>= 16 - bf->length;
687 return chan << bf->offset;
691 * s3c_fb_setcolreg() - framebuffer layer request to change palette.
692 * @regno: The palette index to change.
693 * @red: The red field for the palette data.
694 * @green: The green field for the palette data.
695 * @blue: The blue field for the palette data.
696 * @trans: The transparency (alpha) field for the palette data.
697 * @info: The framebuffer being changed.
699 static int s3c_fb_setcolreg(unsigned regno,
700 unsigned red, unsigned green, unsigned blue,
701 unsigned transp, struct fb_info *info)
703 struct s3c_fb_win *win = info->par;
704 struct s3c_fb *sfb = win->parent;
707 dev_dbg(sfb->dev, "%s: win %d: %d => rgb=%d/%d/%d\n",
708 __func__, win->index, regno, red, green, blue);
710 switch (info->fix.visual) {
711 case FB_VISUAL_TRUECOLOR:
712 /* true-colour, use pseudo-palette */
715 u32 *pal = info->pseudo_palette;
717 val = chan_to_field(red, &info->var.red);
718 val |= chan_to_field(green, &info->var.green);
719 val |= chan_to_field(blue, &info->var.blue);
725 case FB_VISUAL_PSEUDOCOLOR:
726 if (regno < win->variant.palette_sz) {
727 val = chan_to_field(red, &win->palette.r);
728 val |= chan_to_field(green, &win->palette.g);
729 val |= chan_to_field(blue, &win->palette.b);
731 s3c_fb_update_palette(sfb, win, regno, val);
737 return 1; /* unknown type */
744 * s3c_fb_enable() - Set the state of the main LCD output
745 * @sfb: The main framebuffer state.
746 * @enable: The state to set.
748 static void s3c_fb_enable(struct s3c_fb *sfb, int enable)
750 u32 vidcon0 = readl(sfb->regs + VIDCON0);
753 vidcon0 |= VIDCON0_ENVID | VIDCON0_ENVID_F;
755 /* see the note in the framebuffer datasheet about
756 * why you cannot take both of these bits down at the
759 if (!(vidcon0 & VIDCON0_ENVID))
762 vidcon0 |= VIDCON0_ENVID;
763 vidcon0 &= ~VIDCON0_ENVID_F;
766 writel(vidcon0, sfb->regs + VIDCON0);
770 * s3c_fb_blank() - blank or unblank the given window
771 * @blank_mode: The blank state from FB_BLANK_*
772 * @info: The framebuffer to blank.
774 * Framebuffer layer request to change the power state.
776 static int s3c_fb_blank(int blank_mode, struct fb_info *info)
778 struct s3c_fb_win *win = info->par;
779 struct s3c_fb *sfb = win->parent;
780 unsigned int index = win->index;
783 dev_dbg(sfb->dev, "blank mode %d\n", blank_mode);
785 wincon = readl(sfb->regs + sfb->variant.wincon + (index * 4));
787 switch (blank_mode) {
788 case FB_BLANK_POWERDOWN:
789 wincon &= ~WINCONx_ENWIN;
790 sfb->enabled &= ~(1 << index);
791 /* fall through to FB_BLANK_NORMAL */
793 case FB_BLANK_NORMAL:
794 /* disable the DMA and display 0x0 (black) */
795 writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0),
796 sfb->regs + sfb->variant.winmap + (index * 4));
799 case FB_BLANK_UNBLANK:
800 writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4));
801 wincon |= WINCONx_ENWIN;
802 sfb->enabled |= (1 << index);
805 case FB_BLANK_VSYNC_SUSPEND:
806 case FB_BLANK_HSYNC_SUSPEND:
811 writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4));
813 /* Check the enabled state to see if we need to be running the
814 * main LCD interface, as if there are no active windows then
815 * it is highly likely that we also do not need to output
819 /* We could do something like the following code, but the current
820 * system of using framebuffer events means that we cannot make
821 * the distinction between just window 0 being inactive and all
822 * the windows being down.
824 * s3c_fb_enable(sfb, sfb->enabled ? 1 : 0);
827 /* we're stuck with this until we can do something about overriding
828 * the power control using the blanking event for a single fb.
830 if (index == sfb->pdata->default_win)
831 s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0);
837 * s3c_fb_pan_display() - Pan the display.
839 * Note that the offsets can be written to the device at any time, as their
840 * values are latched at each vsync automatically. This also means that only
841 * the last call to this function will have any effect on next vsync, but
842 * there is no need to sleep waiting for it to prevent tearing.
844 * @var: The screen information to verify.
845 * @info: The framebuffer device.
847 static int s3c_fb_pan_display(struct fb_var_screeninfo *var,
848 struct fb_info *info)
850 struct s3c_fb_win *win = info->par;
851 struct s3c_fb *sfb = win->parent;
852 void __iomem *buf = sfb->regs + win->index * 8;
853 unsigned int start_boff, end_boff;
855 /* Offset in bytes to the start of the displayed area */
856 start_boff = var->yoffset * info->fix.line_length;
857 /* X offset depends on the current bpp */
858 if (info->var.bits_per_pixel >= 8) {
859 start_boff += var->xoffset * (info->var.bits_per_pixel >> 3);
861 switch (info->var.bits_per_pixel) {
863 start_boff += var->xoffset >> 1;
866 start_boff += var->xoffset >> 2;
869 start_boff += var->xoffset >> 3;
872 dev_err(sfb->dev, "invalid bpp\n");
876 /* Offset in bytes to the end of the displayed area */
877 end_boff = start_boff + var->yres * info->fix.line_length;
879 /* Temporarily turn off per-vsync update from shadow registers until
880 * both start and end addresses are updated to prevent corruption */
881 shadow_protect_win(win, 1);
883 writel(info->fix.smem_start + start_boff, buf + sfb->variant.buf_start);
884 writel(info->fix.smem_start + end_boff, buf + sfb->variant.buf_end);
886 shadow_protect_win(win, 0);
892 * s3c_fb_enable_irq() - enable framebuffer interrupts
893 * @sfb: main hardware state
895 static void s3c_fb_enable_irq(struct s3c_fb *sfb)
897 void __iomem *regs = sfb->regs;
900 if (!test_and_set_bit(S3C_FB_VSYNC_IRQ_EN, &sfb->irq_flags)) {
901 /* IRQ disabled, enable it */
902 irq_ctrl_reg = readl(regs + VIDINTCON0);
904 irq_ctrl_reg |= VIDINTCON0_INT_ENABLE;
905 irq_ctrl_reg |= VIDINTCON0_INT_FRAME;
907 irq_ctrl_reg &= ~VIDINTCON0_FRAMESEL0_MASK;
908 irq_ctrl_reg |= VIDINTCON0_FRAMESEL0_VSYNC;
909 irq_ctrl_reg &= ~VIDINTCON0_FRAMESEL1_MASK;
910 irq_ctrl_reg |= VIDINTCON0_FRAMESEL1_NONE;
912 writel(irq_ctrl_reg, regs + VIDINTCON0);
917 * s3c_fb_disable_irq() - disable framebuffer interrupts
918 * @sfb: main hardware state
920 static void s3c_fb_disable_irq(struct s3c_fb *sfb)
922 void __iomem *regs = sfb->regs;
925 if (test_and_clear_bit(S3C_FB_VSYNC_IRQ_EN, &sfb->irq_flags)) {
926 /* IRQ enabled, disable it */
927 irq_ctrl_reg = readl(regs + VIDINTCON0);
929 irq_ctrl_reg &= ~VIDINTCON0_INT_FRAME;
930 irq_ctrl_reg &= ~VIDINTCON0_INT_ENABLE;
932 writel(irq_ctrl_reg, regs + VIDINTCON0);
936 static irqreturn_t s3c_fb_irq(int irq, void *dev_id)
938 struct s3c_fb *sfb = dev_id;
939 void __iomem *regs = sfb->regs;
942 irq_sts_reg = readl(regs + VIDINTCON1);
944 if (irq_sts_reg & VIDINTCON1_INT_FRAME) {
946 /* VSYNC interrupt, accept it */
947 writel(VIDINTCON1_INT_FRAME, regs + VIDINTCON1);
949 sfb->vsync_info.count++;
950 wake_up_interruptible(&sfb->vsync_info.wait);
953 /* We only support waiting for VSYNC for now, so it's safe
954 * to always disable irqs here.
956 s3c_fb_disable_irq(sfb);
962 * s3c_fb_wait_for_vsync() - sleep until next VSYNC interrupt or timeout
963 * @sfb: main hardware state
966 static int s3c_fb_wait_for_vsync(struct s3c_fb *sfb, u32 crtc)
974 count = sfb->vsync_info.count;
975 s3c_fb_enable_irq(sfb);
976 ret = wait_event_interruptible_timeout(sfb->vsync_info.wait,
977 count != sfb->vsync_info.count,
978 msecs_to_jiffies(VSYNC_TIMEOUT_MSEC));
985 static int s3c_fb_ioctl(struct fb_info *info, unsigned int cmd,
988 struct s3c_fb_win *win = info->par;
989 struct s3c_fb *sfb = win->parent;
994 case FBIO_WAITFORVSYNC:
995 if (get_user(crtc, (u32 __user *)arg)) {
1000 ret = s3c_fb_wait_for_vsync(sfb, crtc);
1009 static struct fb_ops s3c_fb_ops = {
1010 .owner = THIS_MODULE,
1011 .fb_check_var = s3c_fb_check_var,
1012 .fb_set_par = s3c_fb_set_par,
1013 .fb_blank = s3c_fb_blank,
1014 .fb_setcolreg = s3c_fb_setcolreg,
1015 .fb_fillrect = cfb_fillrect,
1016 .fb_copyarea = cfb_copyarea,
1017 .fb_imageblit = cfb_imageblit,
1018 .fb_pan_display = s3c_fb_pan_display,
1019 .fb_ioctl = s3c_fb_ioctl,
1023 * s3c_fb_alloc_memory() - allocate display memory for framebuffer window
1024 * @sfb: The base resources for the hardware.
1025 * @win: The window to initialise memory for.
1027 * Allocate memory for the given framebuffer.
1029 static int __devinit s3c_fb_alloc_memory(struct s3c_fb *sfb,
1030 struct s3c_fb_win *win)
1032 struct s3c_fb_pd_win *windata = win->windata;
1033 unsigned int real_size, virt_size, size;
1034 struct fb_info *fbi = win->fbinfo;
1037 dev_dbg(sfb->dev, "allocating memory for display\n");
1039 real_size = windata->win_mode.xres * windata->win_mode.yres;
1040 virt_size = windata->virtual_x * windata->virtual_y;
1042 dev_dbg(sfb->dev, "real_size=%u (%u.%u), virt_size=%u (%u.%u)\n",
1043 real_size, windata->win_mode.xres, windata->win_mode.yres,
1044 virt_size, windata->virtual_x, windata->virtual_y);
1046 size = (real_size > virt_size) ? real_size : virt_size;
1047 size *= (windata->max_bpp > 16) ? 32 : windata->max_bpp;
1050 fbi->fix.smem_len = size;
1051 size = PAGE_ALIGN(size);
1053 dev_dbg(sfb->dev, "want %u bytes for window\n", size);
1055 fbi->screen_base = dma_alloc_writecombine(sfb->dev, size,
1056 &map_dma, GFP_KERNEL);
1057 if (!fbi->screen_base)
1060 dev_dbg(sfb->dev, "mapped %x to %p\n",
1061 (unsigned int)map_dma, fbi->screen_base);
1063 memset(fbi->screen_base, 0x0, size);
1064 fbi->fix.smem_start = map_dma;
1070 * s3c_fb_free_memory() - free the display memory for the given window
1071 * @sfb: The base resources for the hardware.
1072 * @win: The window to free the display memory for.
1074 * Free the display memory allocated by s3c_fb_alloc_memory().
1076 static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win)
1078 struct fb_info *fbi = win->fbinfo;
1080 if (fbi->screen_base)
1081 dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len),
1082 fbi->screen_base, fbi->fix.smem_start);
1086 * s3c_fb_release_win() - release resources for a framebuffer window.
1087 * @win: The window to cleanup the resources for.
1089 * Release the resources that where claimed for the hardware window,
1090 * such as the framebuffer instance and any memory claimed for it.
1092 static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win)
1095 unregister_framebuffer(win->fbinfo);
1096 if (win->fbinfo->cmap.len)
1097 fb_dealloc_cmap(&win->fbinfo->cmap);
1098 s3c_fb_free_memory(sfb, win);
1099 framebuffer_release(win->fbinfo);
1104 * s3c_fb_probe_win() - register an hardware window
1105 * @sfb: The base resources for the hardware
1106 * @variant: The variant information for this window.
1107 * @res: Pointer to where to place the resultant window.
1109 * Allocate and do the basic initialisation for one of the hardware's graphics
1112 static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
1113 struct s3c_fb_win_variant *variant,
1114 struct s3c_fb_win **res)
1116 struct fb_var_screeninfo *var;
1117 struct fb_videomode *initmode;
1118 struct s3c_fb_pd_win *windata;
1119 struct s3c_fb_win *win;
1120 struct fb_info *fbinfo;
1124 dev_dbg(sfb->dev, "probing window %d, variant %p\n", win_no, variant);
1126 init_waitqueue_head(&sfb->vsync_info.wait);
1128 palette_size = variant->palette_sz * 4;
1130 fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) +
1131 palette_size * sizeof(u32), sfb->dev);
1133 dev_err(sfb->dev, "failed to allocate framebuffer\n");
1137 windata = sfb->pdata->win[win_no];
1138 initmode = &windata->win_mode;
1140 WARN_ON(windata->max_bpp == 0);
1141 WARN_ON(windata->win_mode.xres == 0);
1142 WARN_ON(windata->win_mode.yres == 0);
1147 win->variant = *variant;
1148 win->fbinfo = fbinfo;
1150 win->windata = windata;
1151 win->index = win_no;
1152 win->palette_buffer = (u32 *)(win + 1);
1154 ret = s3c_fb_alloc_memory(sfb, win);
1156 dev_err(sfb->dev, "failed to allocate display memory\n");
1160 /* setup the r/b/g positions for the window's palette */
1161 if (win->variant.palette_16bpp) {
1162 /* Set RGB 5:6:5 as default */
1163 win->palette.r.offset = 11;
1164 win->palette.r.length = 5;
1165 win->palette.g.offset = 5;
1166 win->palette.g.length = 6;
1167 win->palette.b.offset = 0;
1168 win->palette.b.length = 5;
1171 /* Set 8bpp or 8bpp and 1bit alpha */
1172 win->palette.r.offset = 16;
1173 win->palette.r.length = 8;
1174 win->palette.g.offset = 8;
1175 win->palette.g.length = 8;
1176 win->palette.b.offset = 0;
1177 win->palette.b.length = 8;
1180 /* setup the initial video mode from the window */
1181 fb_videomode_to_var(&fbinfo->var, initmode);
1183 fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
1184 fbinfo->fix.accel = FB_ACCEL_NONE;
1185 fbinfo->var.activate = FB_ACTIVATE_NOW;
1186 fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
1187 fbinfo->var.bits_per_pixel = windata->default_bpp;
1188 fbinfo->fbops = &s3c_fb_ops;
1189 fbinfo->flags = FBINFO_FLAG_DEFAULT;
1190 fbinfo->pseudo_palette = &win->pseudo_palette;
1192 /* prepare to actually start the framebuffer */
1194 ret = s3c_fb_check_var(&fbinfo->var, fbinfo);
1196 dev_err(sfb->dev, "check_var failed on initial video params\n");
1200 /* create initial colour map */
1202 ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1);
1204 fb_set_cmap(&fbinfo->cmap, fbinfo);
1206 dev_err(sfb->dev, "failed to allocate fb cmap\n");
1208 s3c_fb_set_par(fbinfo);
1210 dev_dbg(sfb->dev, "about to register framebuffer\n");
1212 /* run the check_var and set_par on our configuration. */
1214 ret = register_framebuffer(fbinfo);
1216 dev_err(sfb->dev, "failed to register framebuffer\n");
1220 dev_info(sfb->dev, "window %d: fb %s\n", win_no, fbinfo->fix.id);
1226 * s3c_fb_clear_win() - clear hardware window registers.
1227 * @sfb: The base resources for the hardware.
1228 * @win: The window to process.
1230 * Reset the specific window registers to a known state.
1232 static void s3c_fb_clear_win(struct s3c_fb *sfb, int win)
1234 void __iomem *regs = sfb->regs;
1237 writel(0, regs + sfb->variant.wincon + (win * 4));
1238 writel(0, regs + VIDOSD_A(win, sfb->variant));
1239 writel(0, regs + VIDOSD_B(win, sfb->variant));
1240 writel(0, regs + VIDOSD_C(win, sfb->variant));
1241 reg = readl(regs + SHADOWCON);
1242 writel(reg & ~SHADOWCON_WINx_PROTECT(win), regs + SHADOWCON);
1245 static int __devinit s3c_fb_probe(struct platform_device *pdev)
1247 struct s3c_fb_driverdata *fbdrv;
1248 struct device *dev = &pdev->dev;
1249 struct s3c_fb_platdata *pd;
1251 struct resource *res;
1255 fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data;
1257 if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) {
1258 dev_err(dev, "too many windows, cannot attach\n");
1262 pd = pdev->dev.platform_data;
1264 dev_err(dev, "no platform data specified\n");
1268 sfb = kzalloc(sizeof(struct s3c_fb), GFP_KERNEL);
1270 dev_err(dev, "no memory for framebuffers\n");
1274 dev_dbg(dev, "allocate new framebuffer %p\n", sfb);
1278 sfb->variant = fbdrv->variant;
1280 sfb->bus_clk = clk_get(dev, "lcd");
1281 if (IS_ERR(sfb->bus_clk)) {
1282 dev_err(dev, "failed to get bus clock\n");
1286 clk_enable(sfb->bus_clk);
1288 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1290 dev_err(dev, "failed to find registers\n");
1295 sfb->regs_res = request_mem_region(res->start, resource_size(res),
1297 if (!sfb->regs_res) {
1298 dev_err(dev, "failed to claim register region\n");
1303 sfb->regs = ioremap(res->start, resource_size(res));
1305 dev_err(dev, "failed to map registers\n");
1307 goto err_req_region;
1310 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1312 dev_err(dev, "failed to acquire irq resource\n");
1316 sfb->irq_no = res->start;
1317 ret = request_irq(sfb->irq_no, s3c_fb_irq,
1320 dev_err(dev, "irq request failed\n");
1324 dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs);
1326 /* setup gpio and output polarity controls */
1330 writel(pd->vidcon1, sfb->regs + VIDCON1);
1332 /* zero all windows before we do anything */
1334 for (win = 0; win < fbdrv->variant.nr_windows; win++)
1335 s3c_fb_clear_win(sfb, win);
1337 /* initialise colour key controls */
1338 for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) {
1339 void __iomem *regs = sfb->regs + sfb->variant.keycon;
1342 writel(0xffffff, regs + WKEYCON0);
1343 writel(0xffffff, regs + WKEYCON1);
1346 /* we have the register setup, start allocating framebuffers */
1348 for (win = 0; win < fbdrv->variant.nr_windows; win++) {
1352 ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win],
1353 &sfb->windows[win]);
1355 dev_err(dev, "failed to create window %d\n", win);
1356 for (; win >= 0; win--)
1357 s3c_fb_release_win(sfb, sfb->windows[win]);
1362 platform_set_drvdata(pdev, sfb);
1367 free_irq(sfb->irq_no, sfb);
1373 release_resource(sfb->regs_res);
1374 kfree(sfb->regs_res);
1377 clk_disable(sfb->bus_clk);
1378 clk_put(sfb->bus_clk);
1386 * s3c_fb_remove() - Cleanup on module finalisation
1387 * @pdev: The platform device we are bound to.
1389 * Shutdown and then release all the resources that the driver allocated
1390 * on initialisation.
1392 static int __devexit s3c_fb_remove(struct platform_device *pdev)
1394 struct s3c_fb *sfb = platform_get_drvdata(pdev);
1397 for (win = 0; win < S3C_FB_MAX_WIN; win++)
1398 if (sfb->windows[win])
1399 s3c_fb_release_win(sfb, sfb->windows[win]);
1401 free_irq(sfb->irq_no, sfb);
1405 clk_disable(sfb->bus_clk);
1406 clk_put(sfb->bus_clk);
1408 release_resource(sfb->regs_res);
1409 kfree(sfb->regs_res);
1417 static int s3c_fb_suspend(struct platform_device *pdev, pm_message_t state)
1419 struct s3c_fb *sfb = platform_get_drvdata(pdev);
1420 struct s3c_fb_win *win;
1423 for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) {
1424 win = sfb->windows[win_no];
1428 /* use the blank function to push into power-down */
1429 s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo);
1432 clk_disable(sfb->bus_clk);
1436 static int s3c_fb_resume(struct platform_device *pdev)
1438 struct s3c_fb *sfb = platform_get_drvdata(pdev);
1439 struct s3c_fb_platdata *pd = sfb->pdata;
1440 struct s3c_fb_win *win;
1443 clk_enable(sfb->bus_clk);
1445 /* setup registers */
1446 writel(pd->vidcon1, sfb->regs + VIDCON1);
1448 /* zero all windows before we do anything */
1449 for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++)
1450 s3c_fb_clear_win(sfb, win_no);
1452 for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) {
1453 void __iomem *regs = sfb->regs + sfb->variant.keycon;
1455 regs += (win_no * 8);
1456 writel(0xffffff, regs + WKEYCON0);
1457 writel(0xffffff, regs + WKEYCON1);
1460 /* restore framebuffers */
1461 for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) {
1462 win = sfb->windows[win_no];
1466 dev_dbg(&pdev->dev, "resuming window %d\n", win_no);
1467 s3c_fb_set_par(win->fbinfo);
1473 #define s3c_fb_suspend NULL
1474 #define s3c_fb_resume NULL
1478 #define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4))
1479 #define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8))
1481 static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] __devinitdata = {
1484 .osd_size_off = 0x8,
1486 .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
1491 .osd_size_off = 0x12,
1494 .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) |
1495 VALID_BPP(18) | VALID_BPP(19) |
1496 VALID_BPP(24) | VALID_BPP(25)),
1501 .osd_size_off = 0x12,
1505 .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) |
1506 VALID_BPP(18) | VALID_BPP(19) |
1507 VALID_BPP(24) | VALID_BPP(25)),
1514 .valid_bpp = (VALID_BPP124 | VALID_BPP(16) |
1515 VALID_BPP(18) | VALID_BPP(19) |
1516 VALID_BPP(24) | VALID_BPP(25)),
1523 .valid_bpp = (VALID_BPP(1) | VALID_BPP(2) |
1524 VALID_BPP(16) | VALID_BPP(18) |
1525 VALID_BPP(24) | VALID_BPP(25)),
1529 static struct s3c_fb_driverdata s3c_fb_data_64xx __devinitdata = {
1532 .vidtcon = VIDTCON0,
1533 .wincon = WINCON(0),
1534 .winmap = WINxMAP(0),
1538 .buf_start = VIDW_BUF_START(0),
1539 .buf_size = VIDW_BUF_SIZE(0),
1540 .buf_end = VIDW_BUF_END(0),
1552 .win[0] = &s3c_fb_data_64xx_wins[0],
1553 .win[1] = &s3c_fb_data_64xx_wins[1],
1554 .win[2] = &s3c_fb_data_64xx_wins[2],
1555 .win[3] = &s3c_fb_data_64xx_wins[3],
1556 .win[4] = &s3c_fb_data_64xx_wins[4],
1559 static struct s3c_fb_driverdata s3c_fb_data_s5pc100 __devinitdata = {
1562 .vidtcon = VIDTCON0,
1563 .wincon = WINCON(0),
1564 .winmap = WINxMAP(0),
1568 .buf_start = VIDW_BUF_START(0),
1569 .buf_size = VIDW_BUF_SIZE(0),
1570 .buf_end = VIDW_BUF_END(0),
1582 .win[0] = &s3c_fb_data_64xx_wins[0],
1583 .win[1] = &s3c_fb_data_64xx_wins[1],
1584 .win[2] = &s3c_fb_data_64xx_wins[2],
1585 .win[3] = &s3c_fb_data_64xx_wins[3],
1586 .win[4] = &s3c_fb_data_64xx_wins[4],
1589 static struct s3c_fb_driverdata s3c_fb_data_s5pv210 __devinitdata = {
1592 .vidtcon = VIDTCON0,
1593 .wincon = WINCON(0),
1594 .winmap = WINxMAP(0),
1598 .buf_start = VIDW_BUF_START(0),
1599 .buf_size = VIDW_BUF_SIZE(0),
1600 .buf_end = VIDW_BUF_END(0),
1612 .win[0] = &s3c_fb_data_64xx_wins[0],
1613 .win[1] = &s3c_fb_data_64xx_wins[1],
1614 .win[2] = &s3c_fb_data_64xx_wins[2],
1615 .win[3] = &s3c_fb_data_64xx_wins[3],
1616 .win[4] = &s3c_fb_data_64xx_wins[4],
1619 /* S3C2443/S3C2416 style hardware */
1620 static struct s3c_fb_driverdata s3c_fb_data_s3c2443 __devinitdata = {
1640 .win[0] = &(struct s3c_fb_win_variant) {
1642 .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
1644 .win[1] = &(struct s3c_fb_win_variant) {
1648 .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) |
1649 VALID_BPP(18) | VALID_BPP(19) |
1650 VALID_BPP(24) | VALID_BPP(25) |
1655 static struct platform_device_id s3c_fb_driver_ids[] = {
1658 .driver_data = (unsigned long)&s3c_fb_data_64xx,
1660 .name = "s5pc100-fb",
1661 .driver_data = (unsigned long)&s3c_fb_data_s5pc100,
1663 .name = "s5pv210-fb",
1664 .driver_data = (unsigned long)&s3c_fb_data_s5pv210,
1666 .name = "s3c2443-fb",
1667 .driver_data = (unsigned long)&s3c_fb_data_s3c2443,
1671 MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids);
1673 static struct platform_driver s3c_fb_driver = {
1674 .probe = s3c_fb_probe,
1675 .remove = __devexit_p(s3c_fb_remove),
1676 .suspend = s3c_fb_suspend,
1677 .resume = s3c_fb_resume,
1678 .id_table = s3c_fb_driver_ids,
1681 .owner = THIS_MODULE,
1685 static int __init s3c_fb_init(void)
1687 return platform_driver_register(&s3c_fb_driver);
1690 static void __exit s3c_fb_cleanup(void)
1692 platform_driver_unregister(&s3c_fb_driver);
1695 module_init(s3c_fb_init);
1696 module_exit(s3c_fb_cleanup);
1698 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
1699 MODULE_DESCRIPTION("Samsung S3C SoC Framebuffer driver");
1700 MODULE_LICENSE("GPL");
1701 MODULE_ALIAS("platform:s3c-fb");