1#include <linux/config.h>
2#define acornfb_valid_pixrate(rate) (rate >= 39325 && rate <= 40119)
3
4static inline void
5acornfb_vidc20_find_rates(struct vidc_timing *vidc,
6			  struct fb_var_screeninfo *var)
7{
8	u_int bandwidth;
9
10	vidc->control |= VIDC20_CTRL_PIX_CK;
11
12	/* Calculate bandwidth */
13	bandwidth = var->pixclock * 8 / var->bits_per_pixel;
14
15	/* Encode bandwidth as VIDC20 setting */
16	if (bandwidth > 16667*2)
17		vidc->control |= VIDC20_CTRL_FIFO_16;
18	else if (bandwidth > 13333*2)
19		vidc->control |= VIDC20_CTRL_FIFO_20;
20	else if (bandwidth > 11111*2)
21		vidc->control |= VIDC20_CTRL_FIFO_24;
22	else
23		vidc->control |= VIDC20_CTRL_FIFO_28;
24
25	vidc->pll_ctl  = 0x2020;
26}
27
28#ifdef CONFIG_CHRONTEL_7003
29#define acornfb_default_control()	VIDC20_CTRL_PIX_HCLK
30#else
31#define acornfb_default_control()	VIDC20_CTRL_PIX_VCLK
32#endif
33
34#define acornfb_default_econtrol()	VIDC20_ECTL_DAC | VIDC20_ECTL_REG(3) | VIDC20_ECTL_ECK
35