diff options
Diffstat (limited to 'drivers/clk/at91/clk-plldiv.c')
| -rw-r--r-- | drivers/clk/at91/clk-plldiv.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/drivers/clk/at91/clk-plldiv.c b/drivers/clk/at91/clk-plldiv.c index e8c4f8b02f28..3ac09fecc54e 100644 --- a/drivers/clk/at91/clk-plldiv.c +++ b/drivers/clk/at91/clk-plldiv.c @@ -1,11 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ #include <linux/clk-provider.h> @@ -38,21 +33,33 @@ static unsigned long clk_plldiv_recalc_rate(struct clk_hw *hw, return parent_rate; } -static long clk_plldiv_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *parent_rate) +static int clk_plldiv_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { unsigned long div; - if (rate > *parent_rate) - return *parent_rate; - div = *parent_rate / 2; - if (rate < div) - return div; + if (req->rate > req->best_parent_rate) { + req->rate = req->best_parent_rate; - if (rate - div < *parent_rate - rate) - return div; + return 0; + } + + div = req->best_parent_rate / 2; + if (req->rate < div) { + req->rate = div; + + return 0; + } + + if (req->rate - div < req->best_parent_rate - req->rate) { + req->rate = div; - return *parent_rate; + return 0; + } + + req->rate = req->best_parent_rate; + + return 0; } static int clk_plldiv_set_rate(struct clk_hw *hw, unsigned long rate, @@ -71,7 +78,7 @@ static int clk_plldiv_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops plldiv_ops = { .recalc_rate = clk_plldiv_recalc_rate, - .round_rate = clk_plldiv_round_rate, + .determine_rate = clk_plldiv_determine_rate, .set_rate = clk_plldiv_set_rate, }; |