---

yaml
---
r: 43825
b: refs/heads/master
c: f378819
h: refs/heads/master
i:
  43823: 4e8949c
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4c1979c8963528cc6f52203ae62162ed22e171f4
+refs/heads/master: f378819a19e2b9639f17a1a82c5e12adc9512390

trunk/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

trunk/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;
 

trunk/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__ */

trunk/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);
 

trunk/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);

trunk/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