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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: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry 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: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Yan-Hsuan Chuang 2017-04-03 13:41:41 -05:00 committed by Kalle Valo
parent 44e9a5340e
commit a66a4176b7
1 changed files with 19 additions and 0 deletions
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19
drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
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@ -1622,6 +1622,9 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist,
dn = 0;
if (up >= n) {
/* if retry count during continuous n*2
* seconds is 0, enlarge WiFi duration
*/
wait_count = 0;
n = 3;
up = 0;
@ -1638,12 +1641,20 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist,
up = 0;
if (dn == 2) {
/* if continuous 2 retry count(every 2
* seconds) >0 and < 3, reduce WiFi duration
*/
if (wait_count <= 2)
/* avoid loop between the two levels */
m++;
else
m = 1;
if (m >= 20)
/* maximum of m = 20 ' will recheck if
* need to adjust wifi duration in
* maximum time interval 120 seconds
*/
m = 20;
n = 3 * m;
@ -1655,12 +1666,20 @@ static void btc8723b2ant_tdma_duration_adjust(struct btc_coexist *btcoexist,
"[BTCoex], Decrease wifi duration for retry_counter<3!!\n");
}
} else {
/* retry count > 3, once retry count > 3, to reduce
* WiFi duration
*/
if (wait_count == 1)
/* to avoid loop between the two levels */
m++;
else
m = 1;
if (m >= 20)
/* maximum of m = 20 ' will recheck if need to
* adjust wifi duration in maximum time interval
* 120 seconds
*/
m = 20;
n = 3 * m;