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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-11-19 19:32:07 +0100
committerSimon Horman <horms+renesas@verge.net.au>2015-11-24 11:48:35 +0900
commit90069ad1b602d05740ed0fc5f72f09a616ceddd0 (patch)
tree9a425b70182bf838c289a62c4eefa8dc0573298f /drivers/sh
parent0ba58de231066e47de87ccc4d61c5e396fe9bd27 (diff)
downloadlinux-90069ad1b602d05740ed0fc5f72f09a616ceddd0.tar.gz
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.c88
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)
{