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Sourcecode: linux-2.6 version File versions

acornfb.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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