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soc: qcom: Accurately report time in ddr stats

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Get timer frequency using arm timer API and accurately
report time in milli seconds.

Change-Id: I8c9bbcbcd7346b3a8e77ddf832c451452ff1a006
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
This commit is contained in:
Maulik Shah 2019-08-22 15:55:44 +05:30
parent 2b85740d8a
commit c1d8797611
1 changed files with 4 additions and 4 deletions
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8
drivers/soc/qcom/ddr_stats.c
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@ -18,9 +18,10 @@
#include <linux/uaccess.h>
#include <asm/arch_timer.h>
#include <clocksource/arm_arch_timer.h>
#define MAGIC_KEY1 0xA1157A75
#define MAX_NUM_MODES 0x14
#define MSM_ARCH_TIMER_FREQ 19200000
#define GET_PDATA_OF_ATTR(attr) \
(container_of(attr, struct ddr_stats_kobj_attr, ka)->pd)
@ -48,10 +49,9 @@ struct ddr_stats_kobj_attr {
struct ddr_stats_platform_data *pd;
};
static inline u64 get_time_in_msec(u64 counter)
static u64 get_time_in_msec(u64 counter)
{
do_div(counter, MSM_ARCH_TIMER_FREQ);
counter *= MSEC_PER_SEC;
do_div(counter, (arch_timer_get_rate()/MSEC_PER_SEC));
return counter;
}