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-rw-r--r--drivers/gpu/drm/drm_fb_helper.c42
1 files changed, 29 insertions, 13 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 23dc9c115fd9..9c924614c418 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -454,22 +454,39 @@ out_free:
454} 454}
455EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); 455EXPORT_SYMBOL(drm_fb_helper_init_crtc_count);
456 456
457static void setcolreg(struct drm_crtc *crtc, u16 red, u16 green, 457static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
458 u16 blue, u16 regno, struct fb_info *info) 458 u16 blue, u16 regno, struct fb_info *info)
459{ 459{
460 struct drm_fb_helper *fb_helper = info->par; 460 struct drm_fb_helper *fb_helper = info->par;
461 struct drm_framebuffer *fb = fb_helper->fb; 461 struct drm_framebuffer *fb = fb_helper->fb;
462 int pindex; 462 int pindex;
463 463
464 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
465 u32 *palette;
466 u32 value;
467 /* place color in psuedopalette */
468 if (regno > 16)
469 return -EINVAL;
470 palette = (u32 *)info->pseudo_palette;
471 red >>= (16 - info->var.red.length);
472 green >>= (16 - info->var.green.length);
473 blue >>= (16 - info->var.blue.length);
474 value = (red << info->var.red.offset) |
475 (green << info->var.green.offset) |
476 (blue << info->var.blue.offset);
477 palette[regno] = value;
478 return 0;
479 }
480
464 pindex = regno; 481 pindex = regno;
465 482
466 if (fb->bits_per_pixel == 16) { 483 if (fb->bits_per_pixel == 16) {
467 pindex = regno << 3; 484 pindex = regno << 3;
468 485
469 if (fb->depth == 16 && regno > 63) 486 if (fb->depth == 16 && regno > 63)
470 return; 487 return -EINVAL;
471 if (fb->depth == 15 && regno > 31) 488 if (fb->depth == 15 && regno > 31)
472 return; 489 return -EINVAL;
473 490
474 if (fb->depth == 16) { 491 if (fb->depth == 16) {
475 u16 r, g, b; 492 u16 r, g, b;
@@ -493,13 +510,7 @@ static void setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
493 510
494 if (fb->depth != 16) 511 if (fb->depth != 16)
495 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); 512 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
496 513 return 0;
497 if (regno < 16 && info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
498 ((u32 *) fb->pseudo_palette)[regno] =
499 (regno << info->var.red.offset) |
500 (regno << info->var.green.offset) |
501 (regno << info->var.blue.offset);
502 }
503} 514}
504 515
505int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) 516int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
@@ -536,7 +547,9 @@ int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
536 if (transp) 547 if (transp)
537 htransp = *transp++; 548 htransp = *transp++;
538 549
539 setcolreg(crtc, hred, hgreen, hblue, start++, info); 550 rc = setcolreg(crtc, hred, hgreen, hblue, start++, info);
551 if (rc)
552 return rc;
540 } 553 }
541 crtc_funcs->load_lut(crtc); 554 crtc_funcs->load_lut(crtc);
542 } 555 }
@@ -555,6 +568,7 @@ int drm_fb_helper_setcolreg(unsigned regno,
555 struct drm_device *dev = fb_helper->dev; 568 struct drm_device *dev = fb_helper->dev;
556 struct drm_crtc *crtc; 569 struct drm_crtc *crtc;
557 int i; 570 int i;
571 int ret;
558 572
559 if (regno > 255) 573 if (regno > 255)
560 return 1; 574 return 1;
@@ -568,8 +582,10 @@ int drm_fb_helper_setcolreg(unsigned regno,
568 if (i == fb_helper->crtc_count) 582 if (i == fb_helper->crtc_count)
569 continue; 583 continue;
570 584
585 ret = setcolreg(crtc, red, green, blue, regno, info);
586 if (ret)
587 return ret;
571 588
572 setcolreg(crtc, red, green, blue, regno, info);
573 crtc_funcs->load_lut(crtc); 589 crtc_funcs->load_lut(crtc);
574 } 590 }
575 return 0; 591 return 0;
@@ -928,7 +944,7 @@ void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
928{ 944{
929 info->fix.type = FB_TYPE_PACKED_PIXELS; 945 info->fix.type = FB_TYPE_PACKED_PIXELS;
930 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : 946 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
931 FB_VISUAL_DIRECTCOLOR; 947 FB_VISUAL_TRUECOLOR;
932 info->fix.type_aux = 0; 948 info->fix.type_aux = 0;
933 info->fix.xpanstep = 1; /* doing it in hw */ 949 info->fix.xpanstep = 1; /* doing it in hw */
934 info->fix.ypanstep = 1; /* doing it in hw */ 950 info->fix.ypanstep = 1; /* doing it in hw */