From 9cf84d7c97992dbe5360b241327341c07ce30fc9 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 13 Dec 2005 17:48:35 +1100 Subject: [PATCH] [PATCH] powerpc: Fix platinumfb for some modes The platinumfb driver used only on some powermacs has an issue with some video modes & limited VRAM. This patch fixes it. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- drivers/video/platinumfb.c | 12 ++++++++---- drivers/video/platinumfb.h | 4 +++- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/video/platinumfb.c b/drivers/video/platinumfb.c index ca4082ae5a18..ba0af1b66bb6 100644 --- a/drivers/video/platinumfb.c +++ b/drivers/video/platinumfb.c @@ -138,13 +138,15 @@ static int platinumfb_set_par (struct fb_info *info) init = platinum_reg_init[pinfo->vmode-1]; - if (pinfo->vmode == 13 && pinfo->cmode > 0) - offset = 0x10; + if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8)) + offset = 0x10; + info->screen_base = pinfo->frame_buffer + init->fb_offset + offset; info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset; info->fix.visual = (pinfo->cmode == CMODE_8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; - info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<cmode) + offset; + info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<cmode) + + offset; printk("line_length: %x\n", info->fix.line_length); return 0; } @@ -221,7 +223,9 @@ static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, static inline int platinum_vram_reqd(int video_mode, int color_mode) { return vmode_attrs[video_mode-1].vres * - (vmode_attrs[video_mode-1].hres * (1< CMODE_8)) ? 0x10 : 0x20) + 0x1000; } #define STORE_D2(a, d) { \ diff --git a/drivers/video/platinumfb.h b/drivers/video/platinumfb.h index 2834fc1c344b..f6bd77cafd17 100644 --- a/drivers/video/platinumfb.h +++ b/drivers/video/platinumfb.h @@ -158,7 +158,9 @@ static struct platinum_regvals platinum_reg_init_14 = { /* 832x624, 75Hz (13) */ static struct platinum_regvals platinum_reg_init_13 = { 0x70, - { 864, 1680, 3360 }, /* MacOS does 1680 instead of 1696 to fit 16bpp in 1MB */ + { 864, 1680, 3344 }, /* MacOS does 1680 instead of 1696 to fit 16bpp in 1MB, + * and we use 3344 instead of 3360 to fit in 2Mb + */ { 0xff0, 4, 0, 0, 0, 0, 0x299, 0, 0, 0x21e, 0x120, 0x10, 0x23f, 0x1f, 0x25, 0x37, 0x8a, 0x22a, 0x23e, 0x536, 0x534, 4, 9, 0x52, -- GitLab