diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/clock.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra2_clocks.c | 8 |
2 files changed, 16 insertions, 4 deletions
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c index 165aa9c748f6..e028320ab423 100644 --- a/arch/arm/mach-tegra/clock.c +++ b/arch/arm/mach-tegra/clock.c @@ -86,6 +86,7 @@ static unsigned long clk_predict_rate_from_parent(struct clk *c, struct clk *p) if (c->mul != 0 && c->div != 0) { rate *= c->mul; + rate += c->div - 1; /* round up */ do_div(rate, c->div); } @@ -240,12 +241,23 @@ EXPORT_SYMBOL(clk_get_parent); int clk_set_rate_locked(struct clk *c, unsigned long rate) { + long new_rate; + if (!c->ops || !c->ops->set_rate) return -ENOSYS; if (rate > c->max_rate) rate = c->max_rate; + if (c->ops && c->ops->round_rate) { + new_rate = c->ops->round_rate(c, rate); + + if (new_rate < 0) + return new_rate; + + rate = new_rate; + } + return c->ops->set_rate(c, rate); } diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c index 2ca8b74ec07e..73e112f12695 100644 --- a/arch/arm/mach-tegra/tegra2_clocks.c +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -898,9 +898,9 @@ static long tegra2_pll_div_clk_round_rate(struct clk *c, unsigned long rate) divider = clk_div71_get_divider(parent_rate, rate); if (divider < 0) return divider; - return parent_rate * 2 / (divider + 2); + return DIV_ROUND_UP(parent_rate * 2, divider + 2); } else if (c->flags & DIV_2) { - return parent_rate / 2; + return DIV_ROUND_UP(parent_rate, 2); } return -EINVAL; } @@ -1092,12 +1092,12 @@ static long tegra2_periph_clk_round_rate(struct clk *c, if (divider < 0) return divider; - return parent_rate * 2 / (divider + 2); + return DIV_ROUND_UP(parent_rate * 2, divider + 2); } else if (c->flags & DIV_U16) { divider = clk_div16_get_divider(parent_rate, rate); if (divider < 0) return divider; - return parent_rate / (divider + 1); + return DIV_ROUND_UP(parent_rate, divider + 1); } return -EINVAL; } |