patch-2.3.29 linux/include/asm-arm/arch-cl7500/acornfb.h

• Lines: 34
• Date: Tue Nov 23 22:23:11 1999
• Orig file: v2.3.28/linux/include/asm-arm/arch-cl7500/acornfb.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.28/linux/include/asm-arm/arch-cl7500/acornfb.h linux/include/asm-arm/arch-cl7500/acornfb.h
@@ -0,0 +1,33 @@
+#define acornfb_valid_pixrate(rate) (rate >= 39325 && rate <= 40119)
+
+static inline void
+acornfb_vidc20_find_rates(struct vidc_timing *vidc,
+			  struct fb_var_screeninfo *var)
+{
+	u_int bandwidth;
+  
+	vidc->control |= VIDC20_CTRL_PIX_CK;
+
+	/* Calculate bandwidth */
+	bandwidth = var->pixclock * 8 / var->bits_per_pixel;
+
+	/* Encode bandwidth as VIDC20 setting */
+	if (bandwidth > 16667*2)
+		vidc->control |= VIDC20_CTRL_FIFO_16;
+	else if (bandwidth > 13333*2)
+		vidc->control |= VIDC20_CTRL_FIFO_20;
+	else if (bandwidth > 11111*2)
+		vidc->control |= VIDC20_CTRL_FIFO_24;
+	else
+		vidc->control |= VIDC20_CTRL_FIFO_28;
+
+	vidc->pll_ctl  = 0x2020;
+}
+
+#ifdef CONFIG_CHRONTEL_7003
+#define acornfb_default_control()	VIDC20_CTRL_PIX_HCLK
+#else
+#define acornfb_default_control()	VIDC20_CTRL_PIX_VCLK
+#endif
+
+#define acornfb_default_econtrol()	VIDC20_ECTL_DAC | VIDC20_ECTL_REG(3) | VIDC20_ECTL_ECK