Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (c) 2019, Mellanox Technologies inc.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/dim.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) bool dim_on_top(struct dim *dim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	switch (dim->tune_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	case DIM_PARKING_ON_TOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	case DIM_PARKING_TIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 		return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	case DIM_GOING_RIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 		return (dim->steps_left > 1) && (dim->steps_right == 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	default: /* DIM_GOING_LEFT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 		return (dim->steps_right > 1) && (dim->steps_left == 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) EXPORT_SYMBOL(dim_on_top);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) void dim_turn(struct dim *dim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	switch (dim->tune_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	case DIM_PARKING_ON_TOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	case DIM_PARKING_TIRED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	case DIM_GOING_RIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		dim->tune_state = DIM_GOING_LEFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		dim->steps_left = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	case DIM_GOING_LEFT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		dim->tune_state = DIM_GOING_RIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		dim->steps_right = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) EXPORT_SYMBOL(dim_turn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) void dim_park_on_top(struct dim *dim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	dim->steps_right  = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	dim->steps_left   = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	dim->tired        = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	dim->tune_state   = DIM_PARKING_ON_TOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) EXPORT_SYMBOL(dim_park_on_top);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) void dim_park_tired(struct dim *dim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	dim->steps_right  = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	dim->steps_left   = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	dim->tune_state   = DIM_PARKING_TIRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) EXPORT_SYMBOL(dim_park_tired);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void dim_calc_stats(struct dim_sample *start, struct dim_sample *end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		    struct dim_stats *curr_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	/* u32 holds up to 71 minutes, should be enough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	u32 delta_us = ktime_us_delta(end->time, start->time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	u32 npkts = BIT_GAP(BITS_PER_TYPE(u32), end->pkt_ctr, start->pkt_ctr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	u32 nbytes = BIT_GAP(BITS_PER_TYPE(u32), end->byte_ctr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 			     start->byte_ctr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	u32 ncomps = BIT_GAP(BITS_PER_TYPE(u32), end->comp_ctr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 			     start->comp_ctr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	if (!delta_us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	curr_stats->ppms = DIV_ROUND_UP(npkts * USEC_PER_MSEC, delta_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	curr_stats->bpms = DIV_ROUND_UP(nbytes * USEC_PER_MSEC, delta_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	curr_stats->epms = DIV_ROUND_UP(DIM_NEVENTS * USEC_PER_MSEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 					delta_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	curr_stats->cpms = DIV_ROUND_UP(ncomps * USEC_PER_MSEC, delta_us);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	if (curr_stats->epms != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		curr_stats->cpe_ratio = DIV_ROUND_DOWN_ULL(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 			curr_stats->cpms * 100, curr_stats->epms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 		curr_stats->cpe_ratio = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) EXPORT_SYMBOL(dim_calc_stats);