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path: root/drivers/clk/sunxi-ng/ccu_mult.c
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Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_mult.c')
-rw-r--r--drivers/clk/sunxi-ng/ccu_mult.c30
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_mult.c b/drivers/clk/sunxi-ng/ccu_mult.c
index 678b6cb49f01..8724c01171b1 100644
--- a/drivers/clk/sunxi-ng/ccu_mult.c
+++ b/drivers/clk/sunxi-ng/ccu_mult.c
@@ -40,8 +40,13 @@ static unsigned long ccu_mult_round_rate(struct ccu_mux_internal *mux,
struct ccu_mult *cm = data;
struct _ccu_mult _cm;
- _cm.min = 1;
- _cm.max = 1 << cm->mult.width;
+ _cm.min = cm->mult.min;
+
+ if (cm->mult.max)
+ _cm.max = cm->mult.max;
+ else
+ _cm.max = (1 << cm->mult.width) + cm->mult.offset - 1;
+
ccu_mult_find_best(parent_rate, rate, &_cm);
return parent_rate * _cm.mult;
@@ -75,6 +80,9 @@ static unsigned long ccu_mult_recalc_rate(struct clk_hw *hw,
unsigned long val;
u32 reg;
+ if (ccu_frac_helper_is_enabled(&cm->common, &cm->frac))
+ return ccu_frac_helper_read_rate(&cm->common, &cm->frac);
+
reg = readl(cm->common.base + cm->common.reg);
val = reg >> cm->mult.shift;
val &= (1 << cm->mult.width) - 1;
@@ -82,7 +90,7 @@ static unsigned long ccu_mult_recalc_rate(struct clk_hw *hw,
ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1,
&parent_rate);
- return parent_rate * (val + 1);
+ return parent_rate * (val + cm->mult.offset);
}
static int ccu_mult_determine_rate(struct clk_hw *hw,
@@ -102,20 +110,30 @@ static int ccu_mult_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long flags;
u32 reg;
+ if (ccu_frac_helper_has_rate(&cm->common, &cm->frac, rate))
+ return ccu_frac_helper_set_rate(&cm->common, &cm->frac, rate);
+ else
+ ccu_frac_helper_disable(&cm->common, &cm->frac);
+
ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1,
&parent_rate);
_cm.min = cm->mult.min;
- _cm.max = 1 << cm->mult.width;
+
+ if (cm->mult.max)
+ _cm.max = cm->mult.max;
+ else
+ _cm.max = (1 << cm->mult.width) + cm->mult.offset - 1;
+
ccu_mult_find_best(parent_rate, rate, &_cm);
spin_lock_irqsave(cm->common.lock, flags);
reg = readl(cm->common.base + cm->common.reg);
reg &= ~GENMASK(cm->mult.width + cm->mult.shift - 1, cm->mult.shift);
+ reg |= ((_cm.mult - cm->mult.offset) << cm->mult.shift);
- writel(reg | ((_cm.mult - 1) << cm->mult.shift),
- cm->common.base + cm->common.reg);
+ writel(reg, cm->common.base + cm->common.reg);
spin_unlock_irqrestore(cm->common.lock, flags);