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ath9k: Fix BTCOEX weight initialization

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The WLAN/BT weights have to set correctly before BTCOEX
is initialized. Currently, this is not done for all chips
in the AR9003 family. This patch fixes this issue by setting
the weights in the init path. While at it, rename ar9462_wlan_weights
to mci_wlan_weights since it is common to both AR9462 and AR9565.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2012-09-28 11:13:51 +05:30 committed by John W. Linville
parent 5570a914f2
commit 5160b46f3e
4 changed files with 39 additions and 32 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

61
drivers/net/wireless/ath/ath9k/btcoex.c
View file

@ -43,8 +43,8 @@ static const u32 ar9003_wlan_weights[ATH_BTCOEX_STOMP_MAX]
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* STOMP_NONE */
};
static const u32 ar9462_wlan_weights[ATH_BTCOEX_STOMP_MAX]
[AR9300_NUM_WLAN_WEIGHTS] = {
static const u32 mci_wlan_weights[ATH_BTCOEX_STOMP_MAX]
[AR9300_NUM_WLAN_WEIGHTS] = {
{ 0x01017d01, 0x41414101, 0x41414101, 0x41414141 }, /* STOMP_ALL */
{ 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */
{ 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */
@ -208,14 +208,37 @@ static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah)
AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
}
/*
* For AR9002, bt_weight/wlan_weight are used.
* For AR9003 and above, stomp_type is used.
*/
void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
u32 bt_weight,
u32 wlan_weight)
u32 wlan_weight,
enum ath_stomp_type stomp_type)
{
struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
btcoex_hw->bt_coex_weights = SM(bt_weight, AR_BTCOEX_BT_WGHT) |
SM(wlan_weight, AR_BTCOEX_WL_WGHT);
if (AR_SREV_9300_20_OR_LATER(ah)) {
const u32 *weight = ar9003_wlan_weights[stomp_type];
int i;
if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
if ((stomp_type == ATH_BTCOEX_STOMP_LOW) &&
btcoex_hw->mci.stomp_ftp)
stomp_type = ATH_BTCOEX_STOMP_LOW_FTP;
weight = mci_wlan_weights[stomp_type];
}
for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) {
btcoex_hw->bt_weight[i] = AR9300_BT_WGHT;
btcoex_hw->wlan_weight[i] = weight[i];
}
} else {
btcoex_hw->bt_coex_weights =
SM(bt_weight, AR_BTCOEX_BT_WGHT) |
SM(wlan_weight, AR_BTCOEX_WL_WGHT);
}
}
EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight);
@ -332,26 +355,6 @@ void ath9k_hw_btcoex_disable(struct ath_hw *ah)
}
EXPORT_SYMBOL(ath9k_hw_btcoex_disable);
static void ar9003_btcoex_bt_stomp(struct ath_hw *ah,
enum ath_stomp_type stomp_type)
{
struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
const u32 *weight = ar9003_wlan_weights[stomp_type];
int i;
if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
if ((stomp_type == ATH_BTCOEX_STOMP_LOW) &&
btcoex->mci.stomp_ftp)
stomp_type = ATH_BTCOEX_STOMP_LOW_FTP;
weight = ar9462_wlan_weights[stomp_type];
}
for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) {
btcoex->bt_weight[i] = AR9300_BT_WGHT;
btcoex->wlan_weight[i] = weight[i];
}
}
/*
* Configures appropriate weight based on stomp type.
*/
@ -359,22 +362,22 @@ void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
enum ath_stomp_type stomp_type)
{
if (AR_SREV_9300_20_OR_LATER(ah)) {
ar9003_btcoex_bt_stomp(ah, stomp_type);
ath9k_hw_btcoex_set_weight(ah, 0, 0, stomp_type);
return;
}
switch (stomp_type) {
case ATH_BTCOEX_STOMP_ALL:
ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
AR_STOMP_ALL_WLAN_WGHT);
AR_STOMP_ALL_WLAN_WGHT, 0);
break;
case ATH_BTCOEX_STOMP_LOW:
ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
AR_STOMP_LOW_WLAN_WGHT);
AR_STOMP_LOW_WLAN_WGHT, 0);
break;
case ATH_BTCOEX_STOMP_NONE:
ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
AR_STOMP_NONE_WLAN_WGHT);
AR_STOMP_NONE_WLAN_WGHT, 0);
break;
default:
ath_dbg(ath9k_hw_common(ah), BTCOEX, "Invalid Stomptype\n");

3
drivers/net/wireless/ath/ath9k/btcoex.h
View file

@ -107,7 +107,8 @@ void ath9k_hw_btcoex_init_mci(struct ath_hw *ah);
void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
u32 bt_weight,
u32 wlan_weight);
u32 wlan_weight,
enum ath_stomp_type stomp_type);
void ath9k_hw_btcoex_disable(struct ath_hw *ah);
void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
enum ath_stomp_type stomp_type);

5
drivers/net/wireless/ath/ath9k/gpio.c
View file

@ -395,7 +395,10 @@ void ath9k_start_btcoex(struct ath_softc *sc)
!ah->btcoex_hw.enabled) {
if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
AR_STOMP_LOW_WLAN_WGHT);
AR_STOMP_LOW_WLAN_WGHT, 0);
else
ath9k_hw_btcoex_set_weight(ah, 0, 0,
ATH_BTCOEX_STOMP_NONE);
ath9k_hw_btcoex_enable(ah);
if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)

2
drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
View file

@ -161,7 +161,7 @@ void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv)
if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
AR_STOMP_LOW_WLAN_WGHT);
AR_STOMP_LOW_WLAN_WGHT, 0);
ath9k_hw_btcoex_enable(ah);
ath_htc_resume_btcoex_work(priv);
}