#include "geodefb.h"
#include "display_gx.h"
-int gx_frame_buffer_size(void)
+#ifdef CONFIG_FB_GEODE_GX_SET_FBSIZE
+unsigned int gx_frame_buffer_size(void)
{
- /* Assuming 16 MiB. */
- return 16*1024*1024;
+ return CONFIG_FB_GEODE_GX_FBSIZE;
}
+#else
+unsigned int gx_frame_buffer_size(void)
+{
+ unsigned int val;
+
+ /* FB size is reported by a virtual register */
+ /* Virtual register class = 0x02 */
+ /* VG_MEM_SIZE(512Kb units) = 0x00 */
+
+ outw(0xFC53, 0xAC1C);
+ outw(0x0200, 0xAC1C);
+
+ val = (unsigned int)(inw(0xAC1E)) & 0xFFl;
+ return (val << 19);
+}
+#endif
int gx_line_delta(int xres, int bpp)
{
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;