Commit a66a4176 authored by Yan-Hsuan Chuang's avatar Yan-Hsuan Chuang Committed by Kalle Valo

rtlwifi: btcoex: 23b 2ant: add comments to describe how duration adjusted

Since btcoex uses static variables to store the cumulative information
on the wifi status, some tricks are used that are a bit obscure. We add
some comments about the criteria we use to adjust wifi duration.
Signed-off-by: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Cc: Pkshih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 44e9a534
...@@ -1622,6 +1622,9 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist, ...@@ -1622,6 +1622,9 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist,
dn = 0; dn = 0;
if (up >= n) { if (up >= n) {
/* if retry count during continuous n*2
* seconds is 0, enlarge WiFi duration
*/
wait_count = 0; wait_count = 0;
n = 3; n = 3;
up = 0; up = 0;
...@@ -1638,12 +1641,20 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist, ...@@ -1638,12 +1641,20 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist,
up = 0; up = 0;
if (dn == 2) { if (dn == 2) {
/* if continuous 2 retry count(every 2
* seconds) >0 and < 3, reduce WiFi duration
*/
if (wait_count <= 2) if (wait_count <= 2)
/* avoid loop between the two levels */
m++; m++;
else else
m = 1; m = 1;
if (m >= 20) if (m >= 20)
/* maximum of m = 20 ' will recheck if
* need to adjust wifi duration in
* maximum time interval 120 seconds
*/
m = 20; m = 20;
n = 3 * m; n = 3 * m;
...@@ -1655,12 +1666,20 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist, ...@@ -1655,12 +1666,20 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist,
"[BTCoex], Decrease wifi duration for retry_counter<3!!\n"); "[BTCoex], Decrease wifi duration for retry_counter<3!!\n");
} }
} else { } else {
/* retry count > 3, once retry count > 3, to reduce
* WiFi duration
*/
if (wait_count == 1) if (wait_count == 1)
/* to avoid loop between the two levels */
m++; m++;
else else
m = 1; m = 1;
if (m >= 20) if (m >= 20)
/* maximum of m = 20 ' will recheck if need to
* adjust wifi duration in maximum time interval
* 120 seconds
*/
m = 20; m = 20;
n = 3 * m; n = 3 * m;
......
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