1#define acornfb_valid_pixrate(var) (var->pixclock >= 39325 && var->pixclock <= 40119) 2 3static inline void 4acornfb_vidc20_find_rates(struct vidc_timing *vidc, 5 struct fb_var_screeninfo *var) 6{ 7 u_int bandwidth; 8 9 vidc->control |= VIDC20_CTRL_PIX_CK; 10 11 /* Calculate bandwidth */ 12 bandwidth = var->pixclock * 8 / var->bits_per_pixel; 13 14 /* Encode bandwidth as VIDC20 setting */ 15 if (bandwidth > 16667*2) 16 vidc->control |= VIDC20_CTRL_FIFO_16; 17 else if (bandwidth > 13333*2) 18 vidc->control |= VIDC20_CTRL_FIFO_20; 19 else if (bandwidth > 11111*2) 20 vidc->control |= VIDC20_CTRL_FIFO_24; 21 else 22 vidc->control |= VIDC20_CTRL_FIFO_28; 23 24 vidc->pll_ctl = 0x2020; 25} 26 27#ifdef CONFIG_CHRONTEL_7003 28#define acornfb_default_control() VIDC20_CTRL_PIX_HCLK 29#else 30#define acornfb_default_control() VIDC20_CTRL_PIX_VCLK 31#endif 32 33#define acornfb_default_econtrol() VIDC20_ECTL_DAC | VIDC20_ECTL_REG(3) | VIDC20_ECTL_ECK 34