From: Yan-Hsuan Chuang <[email protected]> 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 <[email protected]> Signed-off-by: Larry Finger <[email protected]> Cc: Pkshih <[email protected]> Cc: Birming Chiu <[email protected]> Cc: Shaofu <[email protected]> Cc: Steven Ting <[email protected]> --- v2 - No changes. v3 - No changes. --- .../realtek/rtlwifi/btcoexist/halbtc8723b2ant.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c index b1a4c8466bc6..fb72bcd4090c 100644 --- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c +++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c @@ -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; -- 2.12.0
