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Commit 48331963 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "mhi: core: calculate times based on given timer frequencies"

parents f94903bb 140a8294

drivers/bus/mhi/core/mhi_internal.h

+5 −2
Original line number Diff line number Diff line
@@ -234,8 +234,11 @@ extern struct bus_type mhi_bus_type; 
#define SOC_HW_VERSION_MINOR_VER_BMSK (0x000000FF)

#define SOC_HW_VERSION_MINOR_VER_SHFT (0)



/* convert ticks to micro seconds by dividing by 19.2 */

#define TIME_TICKS_TO_US(x) (div_u64((x) * 10, 192))

/* timesync time calculations */

#define LOCAL_TICKS_TO_US(x) (div_u64((x) * 100ULL, \

				div_u64(mhi_cntrl->local_timer_freq, 10000ULL)))

#define REMOTE_TICKS_TO_US(x) (div_u64((x) * 100ULL, \

			       div_u64(mhi_cntrl->remote_timer_freq, 10000ULL)))



struct mhi_event_ctxt {

	u32 reserved : 8;

drivers/bus/mhi/core/mhi_main.c

+2 −1
Original line number Diff line number Diff line
@@ -717,7 +717,8 @@ static ssize_t time_us_show(struct device *dev, 
	}



	return scnprintf(buf, PAGE_SIZE, "local: %llu remote: %llu (us)\n",

			 TIME_TICKS_TO_US(t_host), TIME_TICKS_TO_US(t_device));

			 LOCAL_TICKS_TO_US(t_host),

			 REMOTE_TICKS_TO_US(t_device));

}

static DEVICE_ATTR_RO(time_us);

include/linux/mhi.h

+2 −0
Original line number Diff line number Diff line
@@ -312,6 +312,8 @@ struct mhi_controller { 
	/* supports time sync feature */

	struct mhi_timesync *mhi_tsync;

	struct mhi_device *tsync_dev;

	u64 local_timer_freq;

	u64 remote_timer_freq;



	/* kernel log level */

	enum MHI_DEBUG_LEVEL klog_lvl;