mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
da89947b47
Switch to my kernel.org alias instead of a badly named gmail address, which I rarely use. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
40 lines
879 B
C
40 lines
879 B
C
/*
|
|
* Copyright (C) 2012 ST Microelectronics
|
|
* Viresh Kumar <vireshk@kernel.org>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*
|
|
* SPEAr clk - Common routines
|
|
*/
|
|
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/types.h>
|
|
#include "clk.h"
|
|
|
|
long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
|
|
unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
|
|
int *index)
|
|
{
|
|
unsigned long prev_rate, rate = 0;
|
|
|
|
for (*index = 0; *index < rtbl_cnt; (*index)++) {
|
|
prev_rate = rate;
|
|
rate = calc_rate(hw, parent_rate, *index);
|
|
if (drate < rate) {
|
|
/* previous clock was best */
|
|
if (*index) {
|
|
rate = prev_rate;
|
|
(*index)--;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((*index) == rtbl_cnt)
|
|
(*index)--;
|
|
|
|
return rate;
|
|
}
|