1 /* Geode LX framebuffer driver
3 * Copyright (C) 2006-2007, Advanced Micro Devices,Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
14 #include <linux/uaccess.h>
15 #include <linux/delay.h>
16 #include <asm/geode.h>
21 * Support panel scaling
23 * Add support for interlacing (TV out)
27 /* This is the complete list of PLL frequencies that we can set -
28 * we will choose the closest match to the incoming clock.
29 * freq is the frequency of the dotclock * 1000 (for example,
30 * 24823 = 24.983 Mhz).
31 * pllval is the corresponding PLL value
51 { 0x00010045, 10000 },
52 { 0x00010089, 10791 },
53 { 0x000110E7, 11225 },
54 { 0x00012136, 11430 },
55 { 0x00013207, 12375 },
56 { 0x00012187, 12500 },
57 { 0x00014286, 14063 },
58 { 0x000110E5, 15016 },
59 { 0x00014214, 16250 },
60 { 0x00011105, 17045 },
61 { 0x000131E4, 18563 },
62 { 0x00013183, 18750 },
63 { 0x00014284, 19688 },
64 { 0x00011104, 20400 },
65 { 0x00016363, 23625 },
66 { 0x00015303, 24380 },
67 { 0x000031AC, 24923 },
68 { 0x0000215D, 25175 },
69 { 0x00001087, 27000 },
70 { 0x0000216C, 28322 },
71 { 0x0000218D, 28560 },
72 { 0x00010041, 29913 },
73 { 0x000010C9, 31200 },
74 { 0x00003147, 31500 },
75 { 0x000141A1, 32400 },
76 { 0x000010A7, 33032 },
77 { 0x00012182, 33375 },
78 { 0x000141B1, 33750 },
79 { 0x00002159, 35112 },
80 { 0x00004249, 35500 },
81 { 0x00000057, 36000 },
82 { 0x000141E1, 37125 },
83 { 0x0000219A, 37889 },
84 { 0x00002158, 39168 },
85 { 0x00000045, 40000 },
86 { 0x000131A1, 40500 },
87 { 0x00010061, 42301 },
88 { 0x00000089, 43163 },
89 { 0x00012151, 43875 },
90 { 0x000010E7, 44900 },
91 { 0x00002136, 45720 },
92 { 0x000152E1, 47250 },
93 { 0x00010071, 48000 },
94 { 0x00003207, 49500 },
95 { 0x00002187, 50000 },
96 { 0x00014291, 50625 },
97 { 0x00011101, 51188 },
98 { 0x00017481, 54563 },
99 { 0x00004286, 56250 },
100 { 0x00014170, 57375 },
101 { 0x00016210, 58500 },
102 { 0x000010E5, 60065 },
103 { 0x00013140, 62796 },
104 { 0x00004214, 65000 },
105 { 0x00016250, 65250 },
106 { 0x00001105, 68179 },
107 { 0x000141C0, 69600 },
108 { 0x00015220, 70160 },
109 { 0x00010050, 72000 },
110 { 0x000031E4, 74250 },
111 { 0x00003183, 75000 },
112 { 0x00004284, 78750 },
113 { 0x00012130, 80052 },
114 { 0x00001104, 81600 },
115 { 0x00006363, 94500 },
116 { 0x00005303, 97520 },
117 { 0x00002183, 100187 },
118 { 0x00002122, 101420 },
119 { 0x00001081, 108000 },
120 { 0x00006201, 113310 },
121 { 0x00000041, 119650 },
122 { 0x000041A1, 129600 },
123 { 0x00002182, 133500 },
124 { 0x000041B1, 135000 },
125 { 0x00000051, 144000 },
126 { 0x000041E1, 148500 },
127 { 0x000062D1, 157500 },
128 { 0x000031A1, 162000 },
129 { 0x00000061, 169203 },
130 { 0x00004231, 172800 },
131 { 0x00002151, 175500 },
132 { 0x000052E1, 189000 },
133 { 0x00000071, 192000 },
134 { 0x00003201, 198000 },
135 { 0x00004291, 202500 },
136 { 0x00001101, 204750 },
137 { 0x00007481, 218250 },
138 { 0x00004170, 229500 },
139 { 0x00006210, 234000 },
140 { 0x00003140, 251182 },
141 { 0x00006250, 261000 },
142 { 0x000041C0, 278400 },
143 { 0x00005220, 280640 },
144 { 0x00000050, 288000 },
145 { 0x000041E0, 297000 },
146 { 0x00002130, 320207 }
150 static void lx_set_dotpll(u32 pllval)
152 u32 dotpll_lo, dotpll_hi;
155 rdmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
157 if ((dotpll_lo & MSR_GLCP_DOTPLL_LOCK) && (dotpll_hi == pllval))
161 dotpll_lo &= ~(MSR_GLCP_DOTPLL_BYPASS | MSR_GLCP_DOTPLL_HALFPIX);
162 dotpll_lo |= MSR_GLCP_DOTPLL_DOTRESET;
164 wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
166 /* Wait 100us for the PLL to lock */
170 /* Now, loop for the lock bit */
172 for (i = 0; i < 1000; i++) {
173 rdmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
174 if (dotpll_lo & MSR_GLCP_DOTPLL_LOCK)
178 /* Clear the reset bit */
180 dotpll_lo &= ~MSR_GLCP_DOTPLL_DOTRESET;
181 wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
184 /* Set the clock based on the frequency specified by the current mode */
186 static void lx_set_clock(struct fb_info *info)
188 unsigned int diff, min, best = 0;
189 unsigned int freq, i;
191 freq = (unsigned int) (1000000000 / info->var.pixclock);
193 min = abs(pll_table[0].freq - freq);
195 for (i = 0; i < ARRAY_SIZE(pll_table); i++) {
196 diff = abs(pll_table[i].freq - freq);
203 lx_set_dotpll(pll_table[best].pllval & 0x00017FFF);
206 static void lx_graphics_disable(struct fb_info *info)
208 struct lxfb_par *par = info->par;
209 unsigned int val, gcfg;
211 /* Note: This assumes that the video is in a quitet state */
213 write_vp(par, VP_A1T, 0);
214 write_vp(par, VP_A2T, 0);
215 write_vp(par, VP_A3T, 0);
217 /* Turn off the VGA and video enable */
218 val = read_dc(par, DC_GENERAL_CFG) & ~(DC_GENERAL_CFG_VGAE |
219 DC_GENERAL_CFG_VIDE);
221 write_dc(par, DC_GENERAL_CFG, val);
223 val = read_vp(par, VP_VCFG) & ~VP_VCFG_VID_EN;
224 write_vp(par, VP_VCFG, val);
226 write_dc(par, DC_IRQ, DC_IRQ_MASK | DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK |
227 DC_IRQ_STATUS | DC_IRQ_VIP_VSYNC_IRQ_STATUS);
229 val = read_dc(par, DC_GENLK_CTL) & ~DC_GENLK_CTL_GENLK_EN;
230 write_dc(par, DC_GENLK_CTL, val);
232 val = read_dc(par, DC_CLR_KEY);
233 write_dc(par, DC_CLR_KEY, val & ~DC_CLR_KEY_CLR_KEY_EN);
235 /* turn off the panel */
236 write_fp(par, FP_PM, read_fp(par, FP_PM) & ~FP_PM_P);
238 val = read_vp(par, VP_MISC) | VP_MISC_DACPWRDN;
239 write_vp(par, VP_MISC, val);
241 /* Turn off the display */
243 val = read_vp(par, VP_DCFG);
244 write_vp(par, VP_DCFG, val & ~(VP_DCFG_CRT_EN | VP_DCFG_HSYNC_EN |
245 VP_DCFG_VSYNC_EN | VP_DCFG_DAC_BL_EN));
247 gcfg = read_dc(par, DC_GENERAL_CFG);
248 gcfg &= ~(DC_GENERAL_CFG_CMPE | DC_GENERAL_CFG_DECE);
249 write_dc(par, DC_GENERAL_CFG, gcfg);
251 /* Turn off the TGEN */
252 val = read_dc(par, DC_DISPLAY_CFG);
253 val &= ~DC_DISPLAY_CFG_TGEN;
254 write_dc(par, DC_DISPLAY_CFG, val);
256 /* Wait 1000 usecs to ensure that the TGEN is clear */
259 /* Turn off the FIFO loader */
261 gcfg &= ~DC_GENERAL_CFG_DFLE;
262 write_dc(par, DC_GENERAL_CFG, gcfg);
264 /* Lastly, wait for the GP to go idle */
267 val = read_gp(par, GP_BLT_STATUS);
268 } while ((val & GP_BLT_STATUS_PB) || !(val & GP_BLT_STATUS_CE));
271 static void lx_graphics_enable(struct fb_info *info)
273 struct lxfb_par *par = info->par;
276 /* Set the video request register */
277 write_vp(par, VP_VRR, 0);
279 /* Set up the polarities */
281 config = read_vp(par, VP_DCFG);
283 config &= ~(VP_DCFG_CRT_SYNC_SKW | VP_DCFG_PWR_SEQ_DELAY |
284 VP_DCFG_CRT_HSYNC_POL | VP_DCFG_CRT_VSYNC_POL);
286 config |= (VP_DCFG_CRT_SYNC_SKW_DEFAULT | VP_DCFG_PWR_SEQ_DELAY_DEFAULT
289 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
290 config |= VP_DCFG_CRT_HSYNC_POL;
292 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
293 config |= VP_DCFG_CRT_VSYNC_POL;
295 if (par->output & OUTPUT_PANEL) {
298 write_fp(par, FP_PT1, 0);
299 write_fp(par, FP_PT2, FP_PT2_SCRC);
300 write_fp(par, FP_DFC, FP_DFC_BC);
302 msrlo = MSR_LX_MSR_PADSEL_TFT_SEL_LOW;
303 msrhi = MSR_LX_MSR_PADSEL_TFT_SEL_HIGH;
305 wrmsr(MSR_LX_MSR_PADSEL, msrlo, msrhi);
308 if (par->output & OUTPUT_CRT) {
309 config |= VP_DCFG_CRT_EN | VP_DCFG_HSYNC_EN |
310 VP_DCFG_VSYNC_EN | VP_DCFG_DAC_BL_EN;
313 write_vp(par, VP_DCFG, config);
315 /* Turn the CRT dacs back on */
317 if (par->output & OUTPUT_CRT) {
318 temp = read_vp(par, VP_MISC);
319 temp &= ~(VP_MISC_DACPWRDN | VP_MISC_APWRDN);
320 write_vp(par, VP_MISC, temp);
323 /* Turn the panel on (if it isn't already) */
324 if (par->output & OUTPUT_PANEL)
325 write_fp(par, FP_PM, read_fp(par, FP_PM) | FP_PM_P);
328 unsigned int lx_framebuffer_size(void)
332 /* The frame buffer size is reported by a VSM in VSA II */
333 /* Virtual Register Class = 0x02 */
334 /* VG_MEM_SIZE (1MB units) = 0x00 */
336 outw(0xFC53, 0xAC1C);
337 outw(0x0200, 0xAC1C);
339 val = (unsigned int)(inw(0xAC1E)) & 0xFE;
343 void lx_set_mode(struct fb_info *info)
345 struct lxfb_par *par = info->par;
348 unsigned int max, dv, val, size;
350 unsigned int gcfg, dcfg;
351 int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal;
352 int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
354 /* Unlock the DC registers */
355 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
357 lx_graphics_disable(info);
361 /* Set output mode */
363 rdmsrl(MSR_LX_GLD_MSR_CONFIG, msrval);
364 msrval &= ~MSR_LX_GLD_MSR_CONFIG_FMT;
366 if (par->output & OUTPUT_PANEL) {
367 msrval |= MSR_LX_GLD_MSR_CONFIG_FMT_FP;
369 if (par->output & OUTPUT_CRT)
370 msrval |= MSR_LX_GLD_MSR_CONFIG_FPC;
372 msrval &= ~MSR_LX_GLD_MSR_CONFIG_FPC;
374 msrval |= MSR_LX_GLD_MSR_CONFIG_FMT_CRT;
376 wrmsrl(MSR_LX_GLD_MSR_CONFIG, msrval);
378 /* Clear the various buffers */
379 /* FIXME: Adjust for panning here */
381 write_dc(par, DC_FB_ST_OFFSET, 0);
382 write_dc(par, DC_CB_ST_OFFSET, 0);
383 write_dc(par, DC_CURS_ST_OFFSET, 0);
385 /* FIXME: Add support for interlacing */
386 /* FIXME: Add support for scaling */
388 val = read_dc(par, DC_GENLK_CTL);
389 val &= ~(DC_GENLK_CTL_ALPHA_FLICK_EN | DC_GENLK_CTL_FLICK_EN |
390 DC_GENLK_CTL_FLICK_SEL_MASK);
392 /* Default scaling params */
394 write_dc(par, DC_GFX_SCALE, (0x4000 << 16) | 0x4000);
395 write_dc(par, DC_IRQ_FILT_CTL, 0);
396 write_dc(par, DC_GENLK_CTL, val);
398 /* FIXME: Support compression */
400 if (info->fix.line_length > 4096)
401 dv = DC_DV_CTL_DV_LINE_SIZE_8K;
402 else if (info->fix.line_length > 2048)
403 dv = DC_DV_CTL_DV_LINE_SIZE_4K;
404 else if (info->fix.line_length > 1024)
405 dv = DC_DV_CTL_DV_LINE_SIZE_2K;
407 dv = DC_DV_CTL_DV_LINE_SIZE_1K;
409 max = info->fix.line_length * info->var.yres;
410 max = (max + 0x3FF) & 0xFFFFFC00;
412 write_dc(par, DC_DV_TOP, max | DC_DV_TOP_DV_TOP_EN);
414 val = read_dc(par, DC_DV_CTL) & ~DC_DV_CTL_DV_LINE_SIZE;
415 write_dc(par, DC_DV_CTL, val | dv);
417 size = info->var.xres * (info->var.bits_per_pixel >> 3);
419 write_dc(par, DC_GFX_PITCH, info->fix.line_length >> 3);
420 write_dc(par, DC_LINE_SIZE, (size + 7) >> 3);
422 /* Set default watermark values */
424 rdmsrl(MSR_LX_SPARE_MSR, msrval);
426 msrval &= ~(MSR_LX_SPARE_MSR_DIS_CFIFO_HGO
427 | MSR_LX_SPARE_MSR_VFIFO_ARB_SEL
428 | MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M
429 | MSR_LX_SPARE_MSR_WM_LPEN_OVRD);
430 msrval |= MSR_LX_SPARE_MSR_DIS_VIFO_WM |
431 MSR_LX_SPARE_MSR_DIS_INIT_V_PRI;
432 wrmsrl(MSR_LX_SPARE_MSR, msrval);
434 gcfg = DC_GENERAL_CFG_DFLE; /* Display fifo enable */
435 gcfg |= (0x6 << DC_GENERAL_CFG_DFHPSL_SHIFT) | /* default priority */
436 (0xb << DC_GENERAL_CFG_DFHPEL_SHIFT);
437 gcfg |= DC_GENERAL_CFG_FDTY; /* Set the frame dirty mode */
439 dcfg = DC_DISPLAY_CFG_VDEN; /* Enable video data */
440 dcfg |= DC_DISPLAY_CFG_GDEN; /* Enable graphics */
441 dcfg |= DC_DISPLAY_CFG_TGEN; /* Turn on the timing generator */
442 dcfg |= DC_DISPLAY_CFG_TRUP; /* Update timings immediately */
443 dcfg |= DC_DISPLAY_CFG_PALB; /* Palette bypass in > 8 bpp modes */
444 dcfg |= DC_DISPLAY_CFG_VISL;
445 dcfg |= DC_DISPLAY_CFG_DCEN; /* Always center the display */
447 /* Set the current BPP mode */
449 switch (info->var.bits_per_pixel) {
451 dcfg |= DC_DISPLAY_CFG_DISP_MODE_8BPP;
455 dcfg |= DC_DISPLAY_CFG_DISP_MODE_16BPP;
460 dcfg |= DC_DISPLAY_CFG_DISP_MODE_24BPP;
464 /* Now - set up the timings */
466 hactive = info->var.xres;
467 hblankstart = hactive;
468 hsyncstart = hblankstart + info->var.right_margin;
469 hsyncend = hsyncstart + info->var.hsync_len;
470 hblankend = hsyncend + info->var.left_margin;
473 vactive = info->var.yres;
474 vblankstart = vactive;
475 vsyncstart = vblankstart + info->var.lower_margin;
476 vsyncend = vsyncstart + info->var.vsync_len;
477 vblankend = vsyncend + info->var.upper_margin;
480 write_dc(par, DC_H_ACTIVE_TIMING, (hactive - 1) | ((htotal - 1) << 16));
481 write_dc(par, DC_H_BLANK_TIMING,
482 (hblankstart - 1) | ((hblankend - 1) << 16));
483 write_dc(par, DC_H_SYNC_TIMING,
484 (hsyncstart - 1) | ((hsyncend - 1) << 16));
486 write_dc(par, DC_V_ACTIVE_TIMING, (vactive - 1) | ((vtotal - 1) << 16));
487 write_dc(par, DC_V_BLANK_TIMING,
488 (vblankstart - 1) | ((vblankend - 1) << 16));
489 write_dc(par, DC_V_SYNC_TIMING,
490 (vsyncstart - 1) | ((vsyncend - 1) << 16));
492 write_dc(par, DC_FB_ACTIVE,
493 (info->var.xres - 1) << 16 | (info->var.yres - 1));
495 /* And re-enable the graphics output */
496 lx_graphics_enable(info);
498 /* Write the two main configuration registers */
499 write_dc(par, DC_DISPLAY_CFG, dcfg);
500 write_dc(par, DC_ARB_CFG, 0);
501 write_dc(par, DC_GENERAL_CFG, gcfg);
503 /* Lock the DC registers */
504 write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
507 void lx_set_palette_reg(struct fb_info *info, unsigned regno,
508 unsigned red, unsigned green, unsigned blue)
510 struct lxfb_par *par = info->par;
513 /* Hardware palette is in RGB 8-8-8 format. */
515 val = (red << 8) & 0xff0000;
516 val |= (green) & 0x00ff00;
517 val |= (blue >> 8) & 0x0000ff;
519 write_dc(par, DC_PAL_ADDRESS, regno);
520 write_dc(par, DC_PAL_DATA, val);
523 int lx_blank_display(struct fb_info *info, int blank_mode)
525 struct lxfb_par *par = info->par;
527 int blank, hsync, vsync, crt;
529 /* CRT power saving modes. */
530 switch (blank_mode) {
531 case FB_BLANK_UNBLANK:
532 blank = 0; hsync = 1; vsync = 1; crt = 1;
534 case FB_BLANK_NORMAL:
535 blank = 1; hsync = 1; vsync = 1; crt = 1;
537 case FB_BLANK_VSYNC_SUSPEND:
538 blank = 1; hsync = 1; vsync = 0; crt = 1;
540 case FB_BLANK_HSYNC_SUSPEND:
541 blank = 1; hsync = 0; vsync = 1; crt = 1;
543 case FB_BLANK_POWERDOWN:
544 blank = 1; hsync = 0; vsync = 0; crt = 0;
550 dcfg = read_vp(par, VP_DCFG);
551 dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN |
554 dcfg |= VP_DCFG_DAC_BL_EN;
556 dcfg |= VP_DCFG_HSYNC_EN;
558 dcfg |= VP_DCFG_VSYNC_EN;
560 dcfg |= VP_DCFG_CRT_EN;
561 write_vp(par, VP_DCFG, dcfg);
563 /* Power on/off flat panel */
565 if (par->output & OUTPUT_PANEL) {
566 fp_pm = read_fp(par, FP_PM);
567 if (blank_mode == FB_BLANK_POWERDOWN)
571 write_fp(par, FP_PM, fp_pm);
579 static void lx_save_regs(struct lxfb_par *par)
584 /* wait for the BLT engine to stop being busy */
586 i = read_gp(par, GP_BLT_STATUS);
587 } while ((i & GP_BLT_STATUS_PB) || !(i & GP_BLT_STATUS_CE));
590 rdmsrl(MSR_LX_MSR_PADSEL, par->msr.padsel);
591 rdmsrl(MSR_GLCP_DOTPLL, par->msr.dotpll);
592 rdmsrl(MSR_LX_GLD_MSR_CONFIG, par->msr.dfglcfg);
593 rdmsrl(MSR_LX_SPARE_MSR, par->msr.dcspare);
595 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
598 memcpy(par->gp, par->gp_regs, sizeof(par->gp));
599 memcpy(par->dc, par->dc_regs, sizeof(par->dc));
600 memcpy(par->vp, par->vp_regs, sizeof(par->vp));
601 memcpy(par->fp, par->vp_regs + VP_FP_START, sizeof(par->fp));
603 /* save the palette */
604 write_dc(par, DC_PAL_ADDRESS, 0);
605 for (i = 0; i < ARRAY_SIZE(par->pal); i++)
606 par->pal[i] = read_dc(par, DC_PAL_DATA);
608 /* save the horizontal filter coefficients */
609 filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
610 for (i = 0; i < ARRAY_SIZE(par->hcoeff); i += 2) {
611 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
612 par->hcoeff[i] = read_dc(par, DC_FILT_COEFF1);
613 par->hcoeff[i + 1] = read_dc(par, DC_FILT_COEFF2);
616 /* save the vertical filter coefficients */
617 filt &= ~DC_IRQ_FILT_CTL_H_FILT_SEL;
618 for (i = 0; i < ARRAY_SIZE(par->vcoeff); i++) {
619 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
620 par->vcoeff[i] = read_dc(par, DC_FILT_COEFF1);
623 /* save video coeff ram */
624 memcpy(par->vp_coeff, par->vp_regs + VP_VCR, sizeof(par->vp_coeff));
627 static void lx_restore_gfx_proc(struct lxfb_par *par)
631 /* a bunch of registers require GP_RASTER_MODE to be set first */
632 write_gp(par, GP_RASTER_MODE, par->gp[GP_RASTER_MODE]);
634 for (i = 0; i < ARRAY_SIZE(par->gp); i++) {
641 /* FIXME: restore LUT data */
644 /* don't restore these registers */
648 write_gp(par, i, par->gp[i]);
653 static void lx_restore_display_ctlr(struct lxfb_par *par)
658 wrmsrl(MSR_LX_SPARE_MSR, par->msr.dcspare);
660 for (i = 0; i < ARRAY_SIZE(par->dc); i++) {
663 /* unlock the DC; runs first */
664 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
669 /* disable all while restoring */
674 /* set all ram to dirty */
675 write_dc(par, i, par->dc[i] | DC_DV_CTL_CLEAR_DV_RAM);
689 /* don't restore these registers */
693 write_dc(par, i, par->dc[i]);
697 /* restore the palette */
698 write_dc(par, DC_PAL_ADDRESS, 0);
699 for (i = 0; i < ARRAY_SIZE(par->pal); i++)
700 write_dc(par, DC_PAL_DATA, par->pal[i]);
702 /* restore the horizontal filter coefficients */
703 filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
704 for (i = 0; i < ARRAY_SIZE(par->hcoeff); i += 2) {
705 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
706 write_dc(par, DC_FILT_COEFF1, par->hcoeff[i]);
707 write_dc(par, DC_FILT_COEFF2, par->hcoeff[i + 1]);
710 /* restore the vertical filter coefficients */
711 filt &= ~DC_IRQ_FILT_CTL_H_FILT_SEL;
712 for (i = 0; i < ARRAY_SIZE(par->vcoeff); i++) {
713 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
714 write_dc(par, DC_FILT_COEFF1, par->vcoeff[i]);
718 static void lx_restore_video_proc(struct lxfb_par *par)
722 wrmsrl(MSR_LX_GLD_MSR_CONFIG, par->msr.dfglcfg);
723 wrmsrl(MSR_LX_MSR_PADSEL, par->msr.padsel);
725 for (i = 0; i < ARRAY_SIZE(par->vp); i++) {
733 /* case VP_VDC: */ /* why should this not be restored? */
736 /* don't restore these registers */
740 write_vp(par, i, par->vp[i]);
744 /* restore video coeff ram */
745 memcpy(par->vp_regs + VP_VCR, par->vp_coeff, sizeof(par->vp_coeff));
748 static void lx_restore_regs(struct lxfb_par *par)
752 lx_set_dotpll((u32) (par->msr.dotpll >> 32));
753 lx_restore_gfx_proc(par);
754 lx_restore_display_ctlr(par);
755 lx_restore_video_proc(par);
758 for (i = 0; i < ARRAY_SIZE(par->fp); i++) {
766 /* don't restore these registers */
770 write_fp(par, i, par->fp[i]);
774 /* control the panel */
775 if (par->fp[FP_PM] & FP_PM_P) {
776 /* power on the panel if not already power{ed,ing} on */
777 if (!(read_fp(par, FP_PM) &
778 (FP_PM_PANEL_ON|FP_PM_PANEL_PWR_UP)))
779 write_fp(par, FP_PM, par->fp[FP_PM]);
781 /* power down the panel if not already power{ed,ing} down */
782 if (!(read_fp(par, FP_PM) &
783 (FP_PM_PANEL_OFF|FP_PM_PANEL_PWR_DOWN)))
784 write_fp(par, FP_PM, par->fp[FP_PM]);
787 /* turn everything on */
788 write_vp(par, VP_VCFG, par->vp[VP_VCFG]);
789 write_vp(par, VP_DCFG, par->vp[VP_DCFG]);
790 write_dc(par, DC_DISPLAY_CFG, par->dc[DC_DISPLAY_CFG]);
791 /* do this last; it will enable the FIFO load */
792 write_dc(par, DC_GENERAL_CFG, par->dc[DC_GENERAL_CFG]);
794 /* lock the door behind us */
795 write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
798 int lx_powerdown(struct fb_info *info)
800 struct lxfb_par *par = info->par;
802 if (par->powered_down)
806 lx_graphics_disable(info);
808 par->powered_down = 1;
812 int lx_powerup(struct fb_info *info)
814 struct lxfb_par *par = info->par;
816 if (!par->powered_down)
819 lx_restore_regs(par);
821 par->powered_down = 0;