diff options
Diffstat (limited to 'arch/arm/common')
-rw-r--r-- | arch/arm/common/icst307.c | 64 | ||||
-rw-r--r-- | arch/arm/common/icst525.c | 65 |
2 files changed, 0 insertions, 129 deletions
diff --git a/arch/arm/common/icst307.c b/arch/arm/common/icst307.c index 2eebd96..f78f5b5 100644 --- a/arch/arm/common/icst307.c +++ b/arch/arm/common/icst307.c @@ -95,67 +95,3 @@ icst307_khz_to_vco(const struct icst_params *p, unsigned long freq) } EXPORT_SYMBOL(icst307_khz_to_vco); - -struct icst_vco -icst307_ps_to_vco(const struct icst_params *p, unsigned long period) -{ - struct icst_vco vco = { .s = 1, .v = p->vd_max, .r = p->rd_max }; - unsigned long f, ps; - unsigned int i = 0, rd, best = (unsigned int)-1; - - ps = 1000000000UL / p->vco_max; - - /* - * First, find the PLL output divisor such - * that the PLL output is within spec. - */ - do { - f = period / s2div[idx2s[i]]; - - /* - * f must be between 6MHz and 200MHz (3.3 or 5V) - */ - if (f >= ps && f < 1000000000UL / 6000 + 1) - break; - } while (i < ARRAY_SIZE(idx2s)); - - if (i >= ARRAY_SIZE(idx2s)) - return vco; - - vco.s = idx2s[i]; - - ps = 500000000UL / p->ref; - - /* - * Now find the closest divisor combination - * which gives a PLL output of 'f'. - */ - for (rd = p->rd_min; rd <= p->rd_max; rd++) { - unsigned long f_in_div, f_pll; - unsigned int vd; - int f_diff; - - f_in_div = ps * rd; - - vd = (f_in_div + f / 2) / f; - if (vd < p->vd_min || vd > p->vd_max) - continue; - - f_pll = (f_in_div + vd / 2) / vd; - f_diff = f_pll - f; - if (f_diff < 0) - f_diff = -f_diff; - - if ((unsigned)f_diff < best) { - vco.v = vd - 8; - vco.r = rd - 2; - if (f_diff == 0) - break; - best = f_diff; - } - } - - return vco; -} - -EXPORT_SYMBOL(icst307_ps_to_vco); diff --git a/arch/arm/common/icst525.c b/arch/arm/common/icst525.c index fd5c2e7..eadf983 100644 --- a/arch/arm/common/icst525.c +++ b/arch/arm/common/icst525.c @@ -93,68 +93,3 @@ icst525_khz_to_vco(const struct icst_params *p, unsigned long freq) } EXPORT_SYMBOL(icst525_khz_to_vco); - -struct icst_vco -icst525_ps_to_vco(const struct icst_params *p, unsigned long period) -{ - struct icst_vco vco = { .s = 1, .v = p->vd_max, .r = p->rd_max }; - unsigned long f, ps; - unsigned int i = 0, rd, best = (unsigned int)-1; - - ps = 1000000000UL / p->vco_max; - - /* - * First, find the PLL output divisor such - * that the PLL output is within spec. - */ - do { - f = period / s2div[idx2s[i]]; - - /* - * f must be between 10MHz and - * 320MHz (5V) or 200MHz (3V) - */ - if (f >= ps && f < 100000) - break; - } while (i < ARRAY_SIZE(idx2s)); - - if (i >= ARRAY_SIZE(idx2s)) - return vco; - - vco.s = idx2s[i]; - - ps = 500000000UL / p->ref; - - /* - * Now find the closest divisor combination - * which gives a PLL output of 'f'. - */ - for (rd = p->rd_min; rd <= p->rd_max; rd++) { - unsigned long f_in_div, f_pll; - unsigned int vd; - int f_diff; - - f_in_div = ps * rd; - - vd = (f_in_div + f / 2) / f; - if (vd < p->vd_min || vd > p->vd_max) - continue; - - f_pll = (f_in_div + vd / 2) / vd; - f_diff = f_pll - f; - if (f_diff < 0) - f_diff = -f_diff; - - if ((unsigned)f_diff < best) { - vco.v = vd - 8; - vco.r = rd - 2; - if (f_diff == 0) - break; - best = f_diff; - } - } - - return vco; -} - -EXPORT_SYMBOL(icst525_ps_to_vco); |