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path: root/drivers/clk/ti/fapll.c
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Diffstat (limited to 'drivers/clk/ti/fapll.c')
-rw-r--r--drivers/clk/ti/fapll.c48
1 files changed, 27 insertions, 21 deletions
diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c
index 2db3fc4a443e..4f28138d2d8a 100644
--- a/drivers/clk/ti/fapll.c
+++ b/drivers/clk/ti/fapll.c
@@ -214,24 +214,27 @@ static int ti_fapll_set_div_mult(unsigned long rate,
return 0;
}
-static long ti_fapll_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int ti_fapll_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
u32 pre_div_p, mult_n;
int error;
- if (!rate)
+ if (!req->rate)
return -EINVAL;
- error = ti_fapll_set_div_mult(rate, *parent_rate,
+ error = ti_fapll_set_div_mult(req->rate, req->best_parent_rate,
&pre_div_p, &mult_n);
- if (error)
- return error;
+ if (error) {
+ req->rate = error;
- rate = *parent_rate / pre_div_p;
- rate *= mult_n;
+ return 0;
+ }
- return rate;
+ req->rate = req->best_parent_rate / pre_div_p;
+ req->rate *= mult_n;
+
+ return 0;
}
static int ti_fapll_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -268,7 +271,7 @@ static const struct clk_ops ti_fapll_ops = {
.is_enabled = ti_fapll_is_enabled,
.recalc_rate = ti_fapll_recalc_rate,
.get_parent = ti_fapll_get_parent,
- .round_rate = ti_fapll_round_rate,
+ .determine_rate = ti_fapll_determine_rate,
.set_rate = ti_fapll_set_rate,
};
@@ -399,14 +402,14 @@ static u32 ti_fapll_synth_set_frac_rate(struct fapll_synth *synth,
return post_div_m;
}
-static long ti_fapll_synth_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int ti_fapll_synth_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct fapll_synth *synth = to_synth(hw);
struct fapll_data *fd = synth->fd;
unsigned long r;
- if (ti_fapll_clock_is_bypass(fd) || !synth->div || !rate)
+ if (ti_fapll_clock_is_bypass(fd) || !synth->div || !req->rate)
return -EINVAL;
/* Only post divider m available with no fractional divider? */
@@ -414,23 +417,26 @@ static long ti_fapll_synth_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long frac_rate;
u32 synth_post_div_m;
- frac_rate = ti_fapll_synth_get_frac_rate(hw, *parent_rate);
- synth_post_div_m = DIV_ROUND_UP(frac_rate, rate);
+ frac_rate = ti_fapll_synth_get_frac_rate(hw,
+ req->best_parent_rate);
+ synth_post_div_m = DIV_ROUND_UP(frac_rate, req->rate);
r = DIV_ROUND_UP(frac_rate, synth_post_div_m);
goto out;
}
- r = *parent_rate * SYNTH_PHASE_K;
- if (rate > r)
+ r = req->best_parent_rate * SYNTH_PHASE_K;
+ if (req->rate > r)
goto out;
r = DIV_ROUND_UP_ULL(r, SYNTH_MAX_INT_DIV * SYNTH_MAX_DIV_M);
- if (rate < r)
+ if (req->rate < r)
goto out;
- r = rate;
+ r = req->rate;
out:
- return r;
+ req->rate = r;
+
+ return 0;
}
static int ti_fapll_synth_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -477,7 +483,7 @@ static const struct clk_ops ti_fapll_synt_ops = {
.disable = ti_fapll_synth_disable,
.is_enabled = ti_fapll_synth_is_enabled,
.recalc_rate = ti_fapll_synth_recalc_rate,
- .round_rate = ti_fapll_synth_round_rate,
+ .determine_rate = ti_fapll_synth_determine_rate,
.set_rate = ti_fapll_synth_set_rate,
};