diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/geode/Kconfig | 20 | ||||
| -rw-r--r-- | drivers/video/geode/display_gx.c | 8 | ||||
| -rw-r--r-- | drivers/video/geode/display_gx.h | 1 | ||||
| -rw-r--r-- | drivers/video/geode/gxfb_core.c | 6 | ||||
| -rw-r--r-- | drivers/video/geode/video_gx.c | 24 | ||||
| -rw-r--r-- | drivers/video/geode/video_gx.h | 7 |
6 files changed, 65 insertions, 1 deletions
diff --git a/drivers/video/geode/Kconfig b/drivers/video/geode/Kconfig index 4e173ef20a7..a814b6c2605 100644 --- a/drivers/video/geode/Kconfig +++ b/drivers/video/geode/Kconfig @@ -23,6 +23,26 @@ config FB_GEODE_GX If unsure, say N. +config FB_GEODE_GX_SET_FBSIZE + bool "Manually specify the Geode GX framebuffer size" + depends on FB_GEODE_GX + default n + ---help--- + If you want to manually specify the size of your GX framebuffer, + say Y here, otherwise say N to dynamically probe it. + + Say N unless you know what you are doing. + +config FB_GEODE_GX_FBSIZE + hex "Size of the GX framebuffer, in bytes" + depends on FB_GEODE_GX_SET_FBSIZE + default "0x1600000" + ---help--- + Specify the size of the GX framebuffer. Normally, you will + want this to be MB aligned. Common values are 0x80000 (8MB) + and 0x1600000 (16MB). Don't change this unless you know what + you are doing + config FB_GEODE_GX1 tristate "AMD Geode GX1 framebuffer support (EXPERIMENTAL)" depends on FB && FB_GEODE && EXPERIMENTAL diff --git a/drivers/video/geode/display_gx.c b/drivers/video/geode/display_gx.c index 0245169366b..0f16e4bffc6 100644 --- a/drivers/video/geode/display_gx.c +++ b/drivers/video/geode/display_gx.c @@ -21,6 +21,12 @@ #include "geodefb.h" #include "display_gx.h" +#ifdef CONFIG_FB_GEODE_GX_SET_FBSIZE +unsigned int gx_frame_buffer_size(void) +{ + return CONFIG_FB_GEODE_GX_FBSIZE; +} +#else unsigned int gx_frame_buffer_size(void) { unsigned int val; @@ -35,6 +41,7 @@ unsigned int gx_frame_buffer_size(void) val = (unsigned int)(inw(0xAC1E)) & 0xFFl; return (val << 19); } +#endif int gx_line_delta(int xres, int bpp) { @@ -90,6 +97,7 @@ static void gx_set_mode(struct fb_info *info) writel(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2, par->dc_regs + DC_LINE_SIZE); + /* Enable graphics and video data and unmask address lines. */ dcfg |= DC_DCFG_GDEN | DC_DCFG_VDEN | DC_DCFG_A20M | DC_DCFG_A18M; diff --git a/drivers/video/geode/display_gx.h b/drivers/video/geode/display_gx.h index 41e79f44067..e962c7679d0 100644 --- a/drivers/video/geode/display_gx.h +++ b/drivers/video/geode/display_gx.h @@ -93,4 +93,5 @@ extern struct geode_dc_ops gx_dc_ops; #define DC_PAL_ADDRESS 0x70 #define DC_PAL_DATA 0x74 +#define DC_GLIU0_MEM_OFFSET 0x84 #endif /* !__DISPLAY_GX1_H__ */ diff --git a/drivers/video/geode/gxfb_core.c b/drivers/video/geode/gxfb_core.c index a454dcb8e21..742fd04178c 100644 --- a/drivers/video/geode/gxfb_core.c +++ b/drivers/video/geode/gxfb_core.c @@ -240,6 +240,12 @@ static int __init gxfb_map_video_memory(struct fb_info *info, struct pci_dev *de if (!info->screen_base) return -ENOMEM; + /* Set the 16MB aligned base address of the graphics memory region + * in the display controller */ + + writel(info->fix.smem_start & 0xFF000000, + par->dc_regs + DC_GLIU0_MEM_OFFSET); + dev_info(&dev->dev, "%d Kibyte of video memory at 0x%lx\n", info->fix.smem_len / 1024, info->fix.smem_start); diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c index 2b2a7880ea7..616ce339c5f 100644 --- a/drivers/video/geode/video_gx.c +++ b/drivers/video/geode/video_gx.c @@ -178,7 +178,21 @@ static void gx_set_dclk_frequency(struct fb_info *info) static void gx_configure_display(struct fb_info *info) { struct geodefb_par *par = info->par; - u32 dcfg, fp_pm; + u32 dcfg, fp_pm, misc; + + /* Set up the MISC register */ + + misc = readl(par->vid_regs + GX_MISC); + + /* Power up the DAC */ + misc &= ~(GX_MISC_A_PWRDN | GX_MISC_DAC_PWRDN); + + /* Disable gamma correction */ + misc |= GX_MISC_GAM_EN; + + writel(misc, par->vid_regs + GX_MISC); + + /* Write the display configuration */ dcfg = readl(par->vid_regs + GX_DCFG); @@ -199,9 +213,17 @@ static void gx_configure_display(struct fb_info *info) if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) dcfg |= GX_DCFG_CRT_VSYNC_POL; + /* Enable the display logic */ + /* Set up the DACS to blank normally */ + + dcfg |= GX_DCFG_CRT_EN | GX_DCFG_DAC_BL_EN; + + /* Enable the external DAC VREF? */ + writel(dcfg, par->vid_regs + GX_DCFG); /* Power on flat panel. */ + fp_pm = readl(par->vid_regs + GX_FP_PM); fp_pm |= GX_FP_PM_P; writel(fp_pm, par->vid_regs + GX_FP_PM); diff --git a/drivers/video/geode/video_gx.h b/drivers/video/geode/video_gx.h index 2d9211f3ed8..238181a7d53 100644 --- a/drivers/video/geode/video_gx.h +++ b/drivers/video/geode/video_gx.h @@ -28,6 +28,13 @@ extern struct geode_vid_ops gx_vid_ops; # define GX_DCFG_GV_GAM 0x00200000 # define GX_DCFG_DAC_VREF 0x04000000 +/* Geode GX MISC video configuration */ + +#define GX_MISC 0x50 +#define GX_MISC_GAM_EN 0x00000001 +#define GX_MISC_DAC_PWRDN 0x00000400 +#define GX_MISC_A_PWRDN 0x00000800 + /* Geode GX flat panel display control registers */ #define GX_FP_PM 0x410 # define GX_FP_PM_P 0x01000000 |