| #define acornfb_valid_pixrate(var) (var->pixclock >= 39325 && var->pixclock <= 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 |
