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author | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-11-19 19:32:07 +0100 |
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committer | Simon Horman <horms+renesas@verge.net.au> | 2015-11-24 11:48:35 +0900 |
commit | 90069ad1b602d05740ed0fc5f72f09a616ceddd0 (patch) | |
tree | 9a425b70182bf838c289a62c4eefa8dc0573298f /drivers/sh | |
parent | 0ba58de231066e47de87ccc4d61c5e396fe9bd27 (diff) | |
download | lwn-90069ad1b602d05740ed0fc5f72f09a616ceddd0.tar.gz lwn-90069ad1b602d05740ed0fc5f72f09a616ceddd0.zip |
drivers: sh: clk: Remove obsolete and unused clk_round_parent()
clk_round_parent() was only ever used by AP4EVB, until commit
b24bd7e97b3784af ("ARM: shmobile: Remove AP4EVB board support").
The Common Clock Framework does not provide clk_round_parent(), hence
remove it.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'drivers/sh')
-rw-r--r-- | drivers/sh/clk/core.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index be56b22ca941..6bf973bd9654 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -555,94 +555,6 @@ long clk_round_rate(struct clk *clk, unsigned long rate) } EXPORT_SYMBOL_GPL(clk_round_rate); -long clk_round_parent(struct clk *clk, unsigned long target, - unsigned long *best_freq, unsigned long *parent_freq, - unsigned int div_min, unsigned int div_max) -{ - struct cpufreq_frequency_table *freq, *best = NULL; - unsigned long error = ULONG_MAX, freq_high, freq_low, div; - struct clk *parent = clk_get_parent(clk); - - if (!parent) { - *parent_freq = 0; - *best_freq = clk_round_rate(clk, target); - return abs(target - *best_freq); - } - - cpufreq_for_each_valid_entry(freq, parent->freq_table) { - if (unlikely(freq->frequency / target <= div_min - 1)) { - unsigned long freq_max; - - freq_max = (freq->frequency + div_min / 2) / div_min; - if (error > target - freq_max) { - error = target - freq_max; - best = freq; - if (best_freq) - *best_freq = freq_max; - } - - pr_debug("too low freq %u, error %lu\n", freq->frequency, - target - freq_max); - - if (!error) - break; - - continue; - } - - if (unlikely(freq->frequency / target >= div_max)) { - unsigned long freq_min; - - freq_min = (freq->frequency + div_max / 2) / div_max; - if (error > freq_min - target) { - error = freq_min - target; - best = freq; - if (best_freq) - *best_freq = freq_min; - } - - pr_debug("too high freq %u, error %lu\n", freq->frequency, - freq_min - target); - - if (!error) - break; - - continue; - } - - div = freq->frequency / target; - freq_high = freq->frequency / div; - freq_low = freq->frequency / (div + 1); - - if (freq_high - target < error) { - error = freq_high - target; - best = freq; - if (best_freq) - *best_freq = freq_high; - } - - if (target - freq_low < error) { - error = target - freq_low; - best = freq; - if (best_freq) - *best_freq = freq_low; - } - - pr_debug("%u / %lu = %lu, / %lu = %lu, best %lu, parent %u\n", - freq->frequency, div, freq_high, div + 1, freq_low, - *best_freq, best->frequency); - - if (!error) - break; - } - - if (parent_freq) - *parent_freq = best->frequency; - - return error; -} -EXPORT_SYMBOL_GPL(clk_round_parent); - #ifdef CONFIG_PM static void clks_core_resume(void) { |