diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c b/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c index 03d7de1911cd..4afb12bd5281 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c @@ -67,8 +67,8 @@ static unsigned long sun4i_dclk_recalc_rate(struct clk_hw *hw, return parent_rate / val; } -static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *parent_rate) +static int sun4i_dclk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct sun4i_dclk *dclk = hw_to_dclk(hw); struct sun4i_tcon *tcon = dclk->tcon; @@ -77,7 +77,7 @@ static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate, int i; for (i = tcon->dclk_min_div; i <= tcon->dclk_max_div; i++) { - u64 ideal = (u64)rate * i; + u64 ideal = (u64)req->rate * i; unsigned long rounded; /* @@ -99,17 +99,19 @@ static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate, goto out; } - if (abs(rate - rounded / i) < - abs(rate - best_parent / best_div)) { + if (abs(req->rate - rounded / i) < + abs(req->rate - best_parent / best_div)) { best_parent = rounded; best_div = i; } } out: - *parent_rate = best_parent; + req->best_parent_rate = best_parent; - return best_parent / best_div; + req->rate = best_parent / best_div; + + return 0; } static int sun4i_dclk_set_rate(struct clk_hw *hw, unsigned long rate, @@ -155,7 +157,7 @@ static const struct clk_ops sun4i_dclk_ops = { .is_enabled = sun4i_dclk_is_enabled, .recalc_rate = sun4i_dclk_recalc_rate, - .round_rate = sun4i_dclk_round_rate, + .determine_rate = sun4i_dclk_determine_rate, .set_rate = sun4i_dclk_set_rate, .get_phase = sun4i_dclk_get_phase, |