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- #include <linux/config.h>
- #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
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