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 { 0x000031AC, 24923 },
67 { 0x0000215D, 25175 },
68 { 0x00001087, 27000 },
69 { 0x0000216C, 28322 },
70 { 0x0000218D, 28560 },
71 { 0x000010C9, 31200 },
72 { 0x00003147, 31500 },
73 { 0x000010A7, 33032 },
74 { 0x00002159, 35112 },
75 { 0x00004249, 35500 },
76 { 0x00000057, 36000 },
77 { 0x0000219A, 37889 },
78 { 0x00002158, 39168 },
79 { 0x00000045, 40000 },
80 { 0x00000089, 43163 },
81 { 0x000010E7, 44900 },
82 { 0x00002136, 45720 },
83 { 0x00003207, 49500 },
84 { 0x00002187, 50000 },
85 { 0x00004286, 56250 },
86 { 0x000010E5, 60065 },
87 { 0x00004214, 65000 },
88 { 0x00001105, 68179 },
89 { 0x000031E4, 74250 },
90 { 0x00003183, 75000 },
91 { 0x00004284, 78750 },
92 { 0x00001104, 81600 },
93 { 0x00006363, 94500 },
94 { 0x00005303, 97520 },
95 { 0x00002183, 100187 },
96 { 0x00002122, 101420 },
97 { 0x00001081, 108000 },
98 { 0x00006201, 113310 },
99 { 0x00000041, 119650 },
100 { 0x000041A1, 129600 },
101 { 0x00002182, 133500 },
102 { 0x000041B1, 135000 },
103 { 0x00000051, 144000 },
104 { 0x000041E1, 148500 },
105 { 0x000062D1, 157500 },
106 { 0x000031A1, 162000 },
107 { 0x00000061, 169203 },
108 { 0x00004231, 172800 },
109 { 0x00002151, 175500 },
110 { 0x000052E1, 189000 },
111 { 0x00000071, 192000 },
112 { 0x00003201, 198000 },
113 { 0x00004291, 202500 },
114 { 0x00001101, 204750 },
115 { 0x00007481, 218250 },
116 { 0x00004170, 229500 },
117 { 0x00006210, 234000 },
118 { 0x00003140, 251182 },
119 { 0x00006250, 261000 },
120 { 0x000041C0, 278400 },
121 { 0x00005220, 280640 },
122 { 0x00000050, 288000 },
123 { 0x000041E0, 297000 },
124 { 0x00002130, 320207 }
128 static void lx_set_dotpll(u32 pllval)
130 u32 dotpll_lo, dotpll_hi;
133 rdmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
135 if ((dotpll_lo & MSR_GLCP_DOTPLL_LOCK) && (dotpll_hi == pllval))
139 dotpll_lo &= ~(MSR_GLCP_DOTPLL_BYPASS | MSR_GLCP_DOTPLL_HALFPIX);
140 dotpll_lo |= MSR_GLCP_DOTPLL_DOTRESET;
142 wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
144 /* Wait 100us for the PLL to lock */
148 /* Now, loop for the lock bit */
150 for (i = 0; i < 1000; i++) {
151 rdmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
152 if (dotpll_lo & MSR_GLCP_DOTPLL_LOCK)
156 /* Clear the reset bit */
158 dotpll_lo &= ~MSR_GLCP_DOTPLL_DOTRESET;
159 wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
162 /* Set the clock based on the frequency specified by the current mode */
164 static void lx_set_clock(struct fb_info *info)
166 unsigned int diff, min, best = 0;
167 unsigned int freq, i;
169 freq = (unsigned int) (1000000000 / info->var.pixclock);
171 min = abs(pll_table[0].freq - freq);
173 for (i = 0; i < ARRAY_SIZE(pll_table); i++) {
174 diff = abs(pll_table[i].freq - freq);
181 lx_set_dotpll(pll_table[best].pllval & 0x00017FFF);
184 static void lx_graphics_disable(struct fb_info *info)
186 struct lxfb_par *par = info->par;
187 unsigned int val, gcfg;
189 /* Note: This assumes that the video is in a quitet state */
191 write_vp(par, VP_A1T, 0);
192 write_vp(par, VP_A2T, 0);
193 write_vp(par, VP_A3T, 0);
195 /* Turn off the VGA and video enable */
196 val = read_dc(par, DC_GENERAL_CFG) & ~(DC_GENERAL_CFG_VGAE |
197 DC_GENERAL_CFG_VIDE);
199 write_dc(par, DC_GENERAL_CFG, val);
201 val = read_vp(par, VP_VCFG) & ~VP_VCFG_VID_EN;
202 write_vp(par, VP_VCFG, val);
204 write_dc(par, DC_IRQ, DC_IRQ_MASK | DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK |
205 DC_IRQ_STATUS | DC_IRQ_VIP_VSYNC_IRQ_STATUS);
207 val = read_dc(par, DC_GENLK_CTL) & ~DC_GENLK_CTL_GENLK_EN;
208 write_dc(par, DC_GENLK_CTL, val);
210 val = read_dc(par, DC_CLR_KEY);
211 write_dc(par, DC_CLR_KEY, val & ~DC_CLR_KEY_CLR_KEY_EN);
213 /* turn off the panel */
214 write_fp(par, FP_PM, read_fp(par, FP_PM) & ~FP_PM_P);
216 val = read_vp(par, VP_MISC) | VP_MISC_DACPWRDN;
217 write_vp(par, VP_MISC, val);
219 /* Turn off the display */
221 val = read_vp(par, VP_DCFG);
222 write_vp(par, VP_DCFG, val & ~(VP_DCFG_CRT_EN | VP_DCFG_HSYNC_EN |
223 VP_DCFG_VSYNC_EN | VP_DCFG_DAC_BL_EN));
225 gcfg = read_dc(par, DC_GENERAL_CFG);
226 gcfg &= ~(DC_GENERAL_CFG_CMPE | DC_GENERAL_CFG_DECE);
227 write_dc(par, DC_GENERAL_CFG, gcfg);
229 /* Turn off the TGEN */
230 val = read_dc(par, DC_DISPLAY_CFG);
231 val &= ~DC_DISPLAY_CFG_TGEN;
232 write_dc(par, DC_DISPLAY_CFG, val);
234 /* Wait 1000 usecs to ensure that the TGEN is clear */
237 /* Turn off the FIFO loader */
239 gcfg &= ~DC_GENERAL_CFG_DFLE;
240 write_dc(par, DC_GENERAL_CFG, gcfg);
242 /* Lastly, wait for the GP to go idle */
245 val = read_gp(par, GP_BLT_STATUS);
246 } while ((val & GP_BLT_STATUS_PB) || !(val & GP_BLT_STATUS_CE));
249 static void lx_graphics_enable(struct fb_info *info)
251 struct lxfb_par *par = info->par;
254 /* Set the video request register */
255 write_vp(par, VP_VRR, 0);
257 /* Set up the polarities */
259 config = read_vp(par, VP_DCFG);
261 config &= ~(VP_DCFG_CRT_SYNC_SKW | VP_DCFG_PWR_SEQ_DELAY |
262 VP_DCFG_CRT_HSYNC_POL | VP_DCFG_CRT_VSYNC_POL);
264 config |= (VP_DCFG_CRT_SYNC_SKW_DEFAULT | VP_DCFG_PWR_SEQ_DELAY_DEFAULT
267 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
268 config |= VP_DCFG_CRT_HSYNC_POL;
270 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
271 config |= VP_DCFG_CRT_VSYNC_POL;
273 if (par->output & OUTPUT_PANEL) {
276 write_fp(par, FP_PT1, 0);
277 write_fp(par, FP_PT2, FP_PT2_SCRC);
278 write_fp(par, FP_DFC, FP_DFC_BC);
280 msrlo = MSR_LX_MSR_PADSEL_TFT_SEL_LOW;
281 msrhi = MSR_LX_MSR_PADSEL_TFT_SEL_HIGH;
283 wrmsr(MSR_LX_MSR_PADSEL, msrlo, msrhi);
286 if (par->output & OUTPUT_CRT) {
287 config |= VP_DCFG_CRT_EN | VP_DCFG_HSYNC_EN |
288 VP_DCFG_VSYNC_EN | VP_DCFG_DAC_BL_EN;
291 write_vp(par, VP_DCFG, config);
293 /* Turn the CRT dacs back on */
295 if (par->output & OUTPUT_CRT) {
296 temp = read_vp(par, VP_MISC);
297 temp &= ~(VP_MISC_DACPWRDN | VP_MISC_APWRDN);
298 write_vp(par, VP_MISC, temp);
301 /* Turn the panel on (if it isn't already) */
302 if (par->output & OUTPUT_PANEL)
303 write_fp(par, FP_PM, read_fp(par, FP_PM) | FP_PM_P);
306 unsigned int lx_framebuffer_size(void)
310 if (!geode_has_vsa2()) {
313 /* The number of pages is (PMAX - PMIN)+1 */
314 rdmsr(MSR_GLIU_P2D_RO0, lo, hi);
317 val = ((hi & 0xff) << 12) | ((lo & 0xfff00000) >> 20);
319 val -= (lo & 0x000fffff);
322 /* The page size is 4k */
326 /* The frame buffer size is reported by a VSM in VSA II */
327 /* Virtual Register Class = 0x02 */
328 /* VG_MEM_SIZE (1MB units) = 0x00 */
330 outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
331 outw(VSA_VR_MEM_SIZE, VSA_VRC_INDEX);
333 val = (unsigned int)(inw(VSA_VRC_DATA)) & 0xFE;
337 void lx_set_mode(struct fb_info *info)
339 struct lxfb_par *par = info->par;
342 unsigned int max, dv, val, size;
344 unsigned int gcfg, dcfg;
345 int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal;
346 int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
348 /* Unlock the DC registers */
349 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
351 lx_graphics_disable(info);
355 /* Set output mode */
357 rdmsrl(MSR_LX_GLD_MSR_CONFIG, msrval);
358 msrval &= ~MSR_LX_GLD_MSR_CONFIG_FMT;
360 if (par->output & OUTPUT_PANEL) {
361 msrval |= MSR_LX_GLD_MSR_CONFIG_FMT_FP;
363 if (par->output & OUTPUT_CRT)
364 msrval |= MSR_LX_GLD_MSR_CONFIG_FPC;
366 msrval &= ~MSR_LX_GLD_MSR_CONFIG_FPC;
368 msrval |= MSR_LX_GLD_MSR_CONFIG_FMT_CRT;
370 wrmsrl(MSR_LX_GLD_MSR_CONFIG, msrval);
372 /* Clear the various buffers */
373 /* FIXME: Adjust for panning here */
375 write_dc(par, DC_FB_ST_OFFSET, 0);
376 write_dc(par, DC_CB_ST_OFFSET, 0);
377 write_dc(par, DC_CURS_ST_OFFSET, 0);
379 /* FIXME: Add support for interlacing */
380 /* FIXME: Add support for scaling */
382 val = read_dc(par, DC_GENLK_CTL);
383 val &= ~(DC_GENLK_CTL_ALPHA_FLICK_EN | DC_GENLK_CTL_FLICK_EN |
384 DC_GENLK_CTL_FLICK_SEL_MASK);
386 /* Default scaling params */
388 write_dc(par, DC_GFX_SCALE, (0x4000 << 16) | 0x4000);
389 write_dc(par, DC_IRQ_FILT_CTL, 0);
390 write_dc(par, DC_GENLK_CTL, val);
392 /* FIXME: Support compression */
394 if (info->fix.line_length > 4096)
395 dv = DC_DV_CTL_DV_LINE_SIZE_8K;
396 else if (info->fix.line_length > 2048)
397 dv = DC_DV_CTL_DV_LINE_SIZE_4K;
398 else if (info->fix.line_length > 1024)
399 dv = DC_DV_CTL_DV_LINE_SIZE_2K;
401 dv = DC_DV_CTL_DV_LINE_SIZE_1K;
403 max = info->fix.line_length * info->var.yres;
404 max = (max + 0x3FF) & 0xFFFFFC00;
406 write_dc(par, DC_DV_TOP, max | DC_DV_TOP_DV_TOP_EN);
408 val = read_dc(par, DC_DV_CTL) & ~DC_DV_CTL_DV_LINE_SIZE;
409 write_dc(par, DC_DV_CTL, val | dv);
411 size = info->var.xres * (info->var.bits_per_pixel >> 3);
413 write_dc(par, DC_GFX_PITCH, info->fix.line_length >> 3);
414 write_dc(par, DC_LINE_SIZE, (size + 7) >> 3);
416 /* Set default watermark values */
418 rdmsrl(MSR_LX_SPARE_MSR, msrval);
420 msrval &= ~(MSR_LX_SPARE_MSR_DIS_CFIFO_HGO
421 | MSR_LX_SPARE_MSR_VFIFO_ARB_SEL
422 | MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M
423 | MSR_LX_SPARE_MSR_WM_LPEN_OVRD);
424 msrval |= MSR_LX_SPARE_MSR_DIS_VIFO_WM |
425 MSR_LX_SPARE_MSR_DIS_INIT_V_PRI;
426 wrmsrl(MSR_LX_SPARE_MSR, msrval);
428 gcfg = DC_GENERAL_CFG_DFLE; /* Display fifo enable */
429 gcfg |= (0x6 << DC_GENERAL_CFG_DFHPSL_SHIFT) | /* default priority */
430 (0xb << DC_GENERAL_CFG_DFHPEL_SHIFT);
431 gcfg |= DC_GENERAL_CFG_FDTY; /* Set the frame dirty mode */
433 dcfg = DC_DISPLAY_CFG_VDEN; /* Enable video data */
434 dcfg |= DC_DISPLAY_CFG_GDEN; /* Enable graphics */
435 dcfg |= DC_DISPLAY_CFG_TGEN; /* Turn on the timing generator */
436 dcfg |= DC_DISPLAY_CFG_TRUP; /* Update timings immediately */
437 dcfg |= DC_DISPLAY_CFG_PALB; /* Palette bypass in > 8 bpp modes */
438 dcfg |= DC_DISPLAY_CFG_VISL;
439 dcfg |= DC_DISPLAY_CFG_DCEN; /* Always center the display */
441 /* Set the current BPP mode */
443 switch (info->var.bits_per_pixel) {
445 dcfg |= DC_DISPLAY_CFG_DISP_MODE_8BPP;
449 dcfg |= DC_DISPLAY_CFG_DISP_MODE_16BPP;
454 dcfg |= DC_DISPLAY_CFG_DISP_MODE_24BPP;
458 /* Now - set up the timings */
460 hactive = info->var.xres;
461 hblankstart = hactive;
462 hsyncstart = hblankstart + info->var.right_margin;
463 hsyncend = hsyncstart + info->var.hsync_len;
464 hblankend = hsyncend + info->var.left_margin;
467 vactive = info->var.yres;
468 vblankstart = vactive;
469 vsyncstart = vblankstart + info->var.lower_margin;
470 vsyncend = vsyncstart + info->var.vsync_len;
471 vblankend = vsyncend + info->var.upper_margin;
474 write_dc(par, DC_H_ACTIVE_TIMING, (hactive - 1) | ((htotal - 1) << 16));
475 write_dc(par, DC_H_BLANK_TIMING,
476 (hblankstart - 1) | ((hblankend - 1) << 16));
477 write_dc(par, DC_H_SYNC_TIMING,
478 (hsyncstart - 1) | ((hsyncend - 1) << 16));
480 write_dc(par, DC_V_ACTIVE_TIMING, (vactive - 1) | ((vtotal - 1) << 16));
481 write_dc(par, DC_V_BLANK_TIMING,
482 (vblankstart - 1) | ((vblankend - 1) << 16));
483 write_dc(par, DC_V_SYNC_TIMING,
484 (vsyncstart - 1) | ((vsyncend - 1) << 16));
486 write_dc(par, DC_FB_ACTIVE,
487 (info->var.xres - 1) << 16 | (info->var.yres - 1));
489 /* And re-enable the graphics output */
490 lx_graphics_enable(info);
492 /* Write the two main configuration registers */
493 write_dc(par, DC_DISPLAY_CFG, dcfg);
494 write_dc(par, DC_ARB_CFG, 0);
495 write_dc(par, DC_GENERAL_CFG, gcfg);
497 /* Lock the DC registers */
498 write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
501 void lx_set_palette_reg(struct fb_info *info, unsigned regno,
502 unsigned red, unsigned green, unsigned blue)
504 struct lxfb_par *par = info->par;
507 /* Hardware palette is in RGB 8-8-8 format. */
509 val = (red << 8) & 0xff0000;
510 val |= (green) & 0x00ff00;
511 val |= (blue >> 8) & 0x0000ff;
513 write_dc(par, DC_PAL_ADDRESS, regno);
514 write_dc(par, DC_PAL_DATA, val);
517 int lx_blank_display(struct fb_info *info, int blank_mode)
519 struct lxfb_par *par = info->par;
520 u32 dcfg, misc, fp_pm;
521 int blank, hsync, vsync;
523 /* CRT power saving modes. */
524 switch (blank_mode) {
525 case FB_BLANK_UNBLANK:
526 blank = 0; hsync = 1; vsync = 1;
528 case FB_BLANK_NORMAL:
529 blank = 1; hsync = 1; vsync = 1;
531 case FB_BLANK_VSYNC_SUSPEND:
532 blank = 1; hsync = 1; vsync = 0;
534 case FB_BLANK_HSYNC_SUSPEND:
535 blank = 1; hsync = 0; vsync = 1;
537 case FB_BLANK_POWERDOWN:
538 blank = 1; hsync = 0; vsync = 0;
544 dcfg = read_vp(par, VP_DCFG);
545 dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN |
548 dcfg |= VP_DCFG_DAC_BL_EN | VP_DCFG_CRT_EN;
550 dcfg |= VP_DCFG_HSYNC_EN;
552 dcfg |= VP_DCFG_VSYNC_EN;
554 write_vp(par, VP_DCFG, dcfg);
556 misc = read_vp(par, VP_MISC);
559 misc &= ~VP_MISC_DACPWRDN;
561 misc |= VP_MISC_DACPWRDN;
563 write_vp(par, VP_MISC, misc);
565 /* Power on/off flat panel */
567 if (par->output & OUTPUT_PANEL) {
568 fp_pm = read_fp(par, FP_PM);
569 if (blank_mode == FB_BLANK_POWERDOWN)
573 write_fp(par, FP_PM, fp_pm);
581 static void lx_save_regs(struct lxfb_par *par)
586 /* wait for the BLT engine to stop being busy */
588 i = read_gp(par, GP_BLT_STATUS);
589 } while ((i & GP_BLT_STATUS_PB) || !(i & GP_BLT_STATUS_CE));
592 rdmsrl(MSR_LX_MSR_PADSEL, par->msr.padsel);
593 rdmsrl(MSR_GLCP_DOTPLL, par->msr.dotpll);
594 rdmsrl(MSR_LX_GLD_MSR_CONFIG, par->msr.dfglcfg);
595 rdmsrl(MSR_LX_SPARE_MSR, par->msr.dcspare);
597 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
600 memcpy(par->gp, par->gp_regs, sizeof(par->gp));
601 memcpy(par->dc, par->dc_regs, sizeof(par->dc));
602 memcpy(par->vp, par->vp_regs, sizeof(par->vp));
603 memcpy(par->fp, par->vp_regs + VP_FP_START, sizeof(par->fp));
605 /* save the palette */
606 write_dc(par, DC_PAL_ADDRESS, 0);
607 for (i = 0; i < ARRAY_SIZE(par->pal); i++)
608 par->pal[i] = read_dc(par, DC_PAL_DATA);
610 /* save the horizontal filter coefficients */
611 filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
612 for (i = 0; i < ARRAY_SIZE(par->hcoeff); i += 2) {
613 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
614 par->hcoeff[i] = read_dc(par, DC_FILT_COEFF1);
615 par->hcoeff[i + 1] = read_dc(par, DC_FILT_COEFF2);
618 /* save the vertical filter coefficients */
619 filt &= ~DC_IRQ_FILT_CTL_H_FILT_SEL;
620 for (i = 0; i < ARRAY_SIZE(par->vcoeff); i++) {
621 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
622 par->vcoeff[i] = read_dc(par, DC_FILT_COEFF1);
625 /* save video coeff ram */
626 memcpy(par->vp_coeff, par->vp_regs + VP_VCR, sizeof(par->vp_coeff));
629 static void lx_restore_gfx_proc(struct lxfb_par *par)
633 /* a bunch of registers require GP_RASTER_MODE to be set first */
634 write_gp(par, GP_RASTER_MODE, par->gp[GP_RASTER_MODE]);
636 for (i = 0; i < ARRAY_SIZE(par->gp); i++) {
643 /* FIXME: restore LUT data */
646 /* don't restore these registers */
650 write_gp(par, i, par->gp[i]);
655 static void lx_restore_display_ctlr(struct lxfb_par *par)
660 wrmsrl(MSR_LX_SPARE_MSR, par->msr.dcspare);
662 for (i = 0; i < ARRAY_SIZE(par->dc); i++) {
665 /* unlock the DC; runs first */
666 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
671 /* disable all while restoring */
676 /* set all ram to dirty */
677 write_dc(par, i, par->dc[i] | DC_DV_CTL_CLEAR_DV_RAM);
691 /* don't restore these registers */
695 write_dc(par, i, par->dc[i]);
699 /* restore the palette */
700 write_dc(par, DC_PAL_ADDRESS, 0);
701 for (i = 0; i < ARRAY_SIZE(par->pal); i++)
702 write_dc(par, DC_PAL_DATA, par->pal[i]);
704 /* restore the horizontal filter coefficients */
705 filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
706 for (i = 0; i < ARRAY_SIZE(par->hcoeff); i += 2) {
707 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
708 write_dc(par, DC_FILT_COEFF1, par->hcoeff[i]);
709 write_dc(par, DC_FILT_COEFF2, par->hcoeff[i + 1]);
712 /* restore the vertical filter coefficients */
713 filt &= ~DC_IRQ_FILT_CTL_H_FILT_SEL;
714 for (i = 0; i < ARRAY_SIZE(par->vcoeff); i++) {
715 write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
716 write_dc(par, DC_FILT_COEFF1, par->vcoeff[i]);
720 static void lx_restore_video_proc(struct lxfb_par *par)
724 wrmsrl(MSR_LX_GLD_MSR_CONFIG, par->msr.dfglcfg);
725 wrmsrl(MSR_LX_MSR_PADSEL, par->msr.padsel);
727 for (i = 0; i < ARRAY_SIZE(par->vp); i++) {
735 /* case VP_VDC: */ /* why should this not be restored? */
738 /* don't restore these registers */
742 write_vp(par, i, par->vp[i]);
746 /* restore video coeff ram */
747 memcpy(par->vp_regs + VP_VCR, par->vp_coeff, sizeof(par->vp_coeff));
750 static void lx_restore_regs(struct lxfb_par *par)
754 lx_set_dotpll((u32) (par->msr.dotpll >> 32));
755 lx_restore_gfx_proc(par);
756 lx_restore_display_ctlr(par);
757 lx_restore_video_proc(par);
760 for (i = 0; i < ARRAY_SIZE(par->fp); i++) {
768 /* don't restore these registers */
772 write_fp(par, i, par->fp[i]);
776 /* control the panel */
777 if (par->fp[FP_PM] & FP_PM_P) {
778 /* power on the panel if not already power{ed,ing} on */
779 if (!(read_fp(par, FP_PM) &
780 (FP_PM_PANEL_ON|FP_PM_PANEL_PWR_UP)))
781 write_fp(par, FP_PM, par->fp[FP_PM]);
783 /* power down the panel if not already power{ed,ing} down */
784 if (!(read_fp(par, FP_PM) &
785 (FP_PM_PANEL_OFF|FP_PM_PANEL_PWR_DOWN)))
786 write_fp(par, FP_PM, par->fp[FP_PM]);
789 /* turn everything on */
790 write_vp(par, VP_VCFG, par->vp[VP_VCFG]);
791 write_vp(par, VP_DCFG, par->vp[VP_DCFG]);
792 write_dc(par, DC_DISPLAY_CFG, par->dc[DC_DISPLAY_CFG]);
793 /* do this last; it will enable the FIFO load */
794 write_dc(par, DC_GENERAL_CFG, par->dc[DC_GENERAL_CFG]);
796 /* lock the door behind us */
797 write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
800 int lx_powerdown(struct fb_info *info)
802 struct lxfb_par *par = info->par;
804 if (par->powered_down)
808 lx_graphics_disable(info);
810 par->powered_down = 1;
814 int lx_powerup(struct fb_info *info)
816 struct lxfb_par *par = info->par;
818 if (!par->powered_down)
821 lx_restore_regs(par);
823 par->powered_down = 0;