diff options
Diffstat (limited to 'packages/linux/linux-omap-2.6.27/mru-enable-overlay-optimalization.diff')
| -rw-r--r-- | packages/linux/linux-omap-2.6.27/mru-enable-overlay-optimalization.diff | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/packages/linux/linux-omap-2.6.27/mru-enable-overlay-optimalization.diff b/packages/linux/linux-omap-2.6.27/mru-enable-overlay-optimalization.diff new file mode 100644 index 0000000000..d027c53d6b --- /dev/null +++ b/packages/linux/linux-omap-2.6.27/mru-enable-overlay-optimalization.diff @@ -0,0 +1,117 @@ +From: Mans Rullgard <mans@mansr.com> +Date: Fri, 29 Aug 2008 01:45:26 +0000 (+0100) +Subject: OMAP: Enable overlay optimisation +X-Git-Url: http://git.mansr.com/?p=linux-omap;a=commitdiff_plain;h=7e052af7e4c73dc450412486ad37eb529e725dc7 + +OMAP: Enable overlay optimisation + +This enables the overlay optimisation feature when the video +overlay is active. This reduces memory bandwidth used by the +display subsystem, improving overall performance. + +Signed-off-by: Mans Rullgard <mans@mansr.com> +--- + +diff --git a/drivers/video/omap/dispc.c b/drivers/video/omap/dispc.c +index 888d2c2..0f0b2e5 100644 +--- a/drivers/video/omap/dispc.c ++++ b/drivers/video/omap/dispc.c +@@ -315,6 +315,60 @@ void omap_dispc_enable_digit_out(int enable) + } + EXPORT_SYMBOL(omap_dispc_enable_digit_out); + ++#define MIN(a, b) ((a)<(b)?(a):(b)) ++#define MAX(a, b) ((a)>(b)?(a):(b)) ++ ++static void setup_overlay_opt(void) ++{ ++ struct fb_info **fbi = dispc.fbdev->fb_info; ++ struct omapfb_plane_struct *gfx, *vid; ++ struct fb_var_screeninfo *gvar; ++ unsigned gx, gx2, gy, gy2, gw, gh; ++ unsigned vx, vx2, vy, vy2, vw, vh; ++ unsigned bpp, skip; ++ static unsigned last_skip; ++ ++ if (!fbi[0] || !fbi[1]) ++ return; ++ ++ gfx = fbi[0]->par; ++ vid = fbi[1]->par; ++ gvar = &fbi[0]->var; ++ ++ gx = gfx->info.pos_x; ++ gy = gfx->info.pos_y; ++ gw = gfx->info.out_width; ++ gh = gfx->info.out_height; ++ vx = vid->info.pos_x; ++ vy = vid->info.pos_y; ++ vw = vid->info.out_width; ++ vh = vid->info.out_height; ++ gx2 = gx + gw; ++ gy2 = gy + gh; ++ vx2 = vx + vw; ++ vy2 = vy + vh; ++ bpp = gvar->bits_per_pixel / 8; ++ ++ if (!gfx->info.enabled || !vid->info.enabled || ++ dispc.color_key.key_type != OMAPFB_COLOR_KEY_DISABLED) { ++ skip = 0; ++ } else if (vx <= gx && vx2 >= gx2) { ++ unsigned y = MIN(gy2, vy2) - MAX(gy, vy); ++ skip = y * gvar->xres_virtual * bpp; ++ } else if (vx <= gx || vx2 >= gx2) { ++ unsigned x = MIN(gx2, vx2) - MAX(gx, vx); ++ skip = x * bpp; ++ } else { ++ skip = vw * bpp + 1; ++ } ++ ++ if (skip != last_skip) { ++ last_skip = skip; ++ dispc_write_reg(DISPC_GFX_WINDOW_SKIP, skip); ++ MOD_REG_FLD(DISPC_CONTROL, 1<<12, !!skip<<12); ++ } ++} ++ + static inline int _setup_plane(int plane, int channel_out, + u32 paddr, int screen_width, + int pos_x, int pos_y, int width, int height, +@@ -437,6 +491,9 @@ static inline int _setup_plane(int plane, int channel_out, + + dispc_write_reg(ri_reg[plane], (screen_width - width) * bpp / 8 + 1); + ++ if (plane < 2) ++ setup_overlay_opt(); ++ + MOD_REG_FLD(DISPC_CONTROL, 1<<5, 1<<5); + + return height * screen_width * bpp / 8; +@@ -585,11 +642,19 @@ static int omap_dispc_enable_plane(int plane, int enable) + const u32 at_reg[] = { DISPC_GFX_ATTRIBUTES, + DISPC_VID1_BASE + DISPC_VID_ATTRIBUTES, + DISPC_VID2_BASE + DISPC_VID_ATTRIBUTES }; ++ struct omapfb_plane_struct *pi; ++ + if ((unsigned int)plane > dispc.mem_desc.region_cnt) + return -EINVAL; + ++ pi = dispc.fbdev->fb_info[plane]->par; ++ pi->info.enabled = enable; ++ + enable_lcd_clocks(1); + MOD_REG_FLD(at_reg[plane], 1, enable ? 1 : 0); ++ if (plane < 2) ++ setup_overlay_opt(); ++ MOD_REG_FLD(DISPC_CONTROL, 1<<5, 1<<5); + enable_lcd_clocks(0); + + return 0; +@@ -633,6 +698,7 @@ static int omap_dispc_set_color_key(struct omapfb_color_key *ck) + if (val != 0) + dispc_write_reg(tr_reg, ck->trans_key); + dispc_write_reg(df_reg, ck->background); ++ setup_overlay_opt(); + enable_lcd_clocks(0); + + dispc.color_key = *ck; |