diff options
Diffstat (limited to 'include/asm-arm/arch-cl7500/acornfb.h')
| -rw-r--r-- | include/asm-arm/arch-cl7500/acornfb.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/asm-arm/arch-cl7500/acornfb.h b/include/asm-arm/arch-cl7500/acornfb.h new file mode 100644 index 000000000000..3867231a4470 --- /dev/null +++ b/include/asm-arm/arch-cl7500/acornfb.h @@ -0,0 +1,34 @@ +#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 |