There are some HP laptops that contain only a single antenna, which would
not be a problem except these boxes have a mistake in their EFUSE coding.
The ant_sel module option has been provided to correct for this problem;
however, the current antenna selection code has bugs. The first of these
two patches fix a problem in kernel 4.12, and the second fixes an
additional problem in kernel 4.13.
These patches are intended for kernel 4.14.
Thanks,
Larry
Signed-off-by: Larry Finger <[email protected]>
Cc: Ping-Ke Shih <[email protected]>
Cc: Yan-Hsuan Chuang <[email protected]>
Cc: Birming Chiu <[email protected]>
Cc: Shaofu <[email protected]>
Cc: Steven Ting <[email protected]>
Larry Finger (2):
rtlwifi: btcoexist: Fix breakage of ant_sel for rtl8723be
rtlwifi: btcoexist: Fix antenna selection code
.../realtek/rtlwifi/btcoexist/halbtc8723b2ant.c | 5 ++++-
.../realtek/rtlwifi/btcoexist/halbtcoutsrc.c | 23 +++++++++++++++-------
2 files changed, 20 insertions(+), 8 deletions(-)
--
2.12.3
In commit 87d8a9f35202 ("rtlwifi: btcoex: call bind to setup btcoex"),
the code turns on a call to exhalbtc_bind_bt_coex_withadapter(). This
routine contains a bug that causes incorrect antenna selection for those
HP laptops with only one antenna and an incorrectly programmed EFUSE.
These boxes are the ones that need the ant_sel module parameter.
Fixes: 87d8a9f35202 ("rtlwifi: btcoex: call bind to setup btcoex")
Signed-off-by: Larry Finger <[email protected]>
Cc: Ping-Ke Shih <[email protected]>
Cc: Yan-Hsuan Chuang <[email protected]>
Cc: Birming Chiu <[email protected]>
Cc: Shaofu <[email protected]>
Cc: Steven Ting <[email protected]>
Cc: Stable <[email protected]> # 4.13+
---
Kalle,
This patch is intended for kernel 4.14.
Thanks,
Larry
---
.../realtek/rtlwifi/btcoexist/halbtcoutsrc.c | 23 +++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
index c1eacd8352a2..b5e9877d935c 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
@@ -173,6 +173,16 @@ static u8 halbtc_get_wifi_central_chnl(struct btc_coexist *btcoexist)
u8 rtl_get_hwpg_single_ant_path(struct rtl_priv *rtlpriv)
{
+ struct rtl_mod_params *mod_params = rtlpriv->cfg->mod_params;
+
+ /* override ant_num / ant_path */
+ if (mod_params->ant_sel) {
+ rtlpriv->btcoexist.btc_info.ant_num =
+ (mod_params->ant_sel == 1 ? ANT_X2 : ANT_X1);
+
+ rtlpriv->btcoexist.btc_info.single_ant_path =
+ (mod_params->ant_sel == 1 ? 0 : 1);
+ }
return rtlpriv->btcoexist.btc_info.single_ant_path;
}
@@ -183,6 +193,7 @@ u8 rtl_get_hwpg_bt_type(struct rtl_priv *rtlpriv)
u8 rtl_get_hwpg_ant_num(struct rtl_priv *rtlpriv)
{
+ struct rtl_mod_params *mod_params = rtlpriv->cfg->mod_params;
u8 num;
if (rtlpriv->btcoexist.btc_info.ant_num == ANT_X2)
@@ -190,6 +201,10 @@ u8 rtl_get_hwpg_ant_num(struct rtl_priv *rtlpriv)
else
num = 1;
+ /* override ant_num / ant_path */
+ if (mod_params->ant_sel)
+ num = (mod_params->ant_sel == 1 ? ANT_X2 : ANT_X1) + 1;
+
return num;
}
@@ -876,7 +891,7 @@ bool exhalbtc_bind_bt_coex_withadapter(void *adapter)
{
struct btc_coexist *btcoexist = &gl_bt_coexist;
struct rtl_priv *rtlpriv = adapter;
- u8 ant_num = 2, chip_type, single_ant_path = 0;
+ u8 ant_num = 2, chip_type;
if (btcoexist->binded)
return false;
@@ -911,12 +926,6 @@ bool exhalbtc_bind_bt_coex_withadapter(void *adapter)
ant_num = rtl_get_hwpg_ant_num(rtlpriv);
exhalbtc_set_ant_num(rtlpriv, BT_COEX_ANT_TYPE_PG, ant_num);
- /* set default antenna position to main port */
- btcoexist->board_info.btdm_ant_pos = BTC_ANTENNA_AT_MAIN_PORT;
-
- single_ant_path = rtl_get_hwpg_single_ant_path(rtlpriv);
- exhalbtc_set_single_ant_path(single_ant_path);
-
if (rtl_get_hwpg_package_type(rtlpriv) == 0)
btcoexist->board_info.tfbga_package = false;
else if (rtl_get_hwpg_package_type(rtlpriv) == 1)
--
2.12.3
In commit bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when
hw initialisation done"), there is an additional error when the module
parameter ant_sel is used to select the auxilary antenna. The error is
that the antenna selection is not checked when writing the antenna
selection register.
Fixes: bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when hw initialisation done")
Signed-off-by: Larry Finger <[email protected]>
Cc: Ping-Ke Shih <[email protected]>
Cc: Yan-Hsuan Chuang <[email protected]>
Cc: Birming Chiu <[email protected]>
Cc: Shaofu <[email protected]>
Cc: Steven Ting <[email protected]>
Cc: Stable <[email protected]> # 4.12+
---
Kalle,
This material is intended for kernel 4.14.
---
drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
index 31965f0ef69d..e8f07573aed9 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
@@ -1183,7 +1183,10 @@ static void btc8723b2ant_set_ant_path(struct btc_coexist *btcoexist,
}
/* fixed internal switch S1->WiFi, S0->BT */
- btcoexist->btc_write_4byte(btcoexist, 0x948, 0x0);
+ if (board_info->btdm_ant_pos == BTC_ANTENNA_AT_MAIN_PORT)
+ btcoexist->btc_write_2byte(btcoexist, 0x948, 0x0);
+ else
+ btcoexist->btc_write_2byte(btcoexist, 0x948, 0x280);
switch (antpos_type) {
case BTC_ANT_WIFI_AT_MAIN:
--
2.12.3
Larry Finger <[email protected]> wrote:
> In commit bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when
> hw initialisation done"), there is an additional error when the module
> parameter ant_sel is used to select the auxilary antenna. The error is
> that the antenna selection is not checked when writing the antenna
> selection register.
>
> Fixes: bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when hw initialisation done")
> Signed-off-by: Larry Finger <[email protected]>
> Cc: Ping-Ke Shih <[email protected]>
> Cc: Yan-Hsuan Chuang <[email protected]>
> Cc: Birming Chiu <[email protected]>
> Cc: Shaofu <[email protected]>
> Cc: Steven Ting <[email protected]>
> Cc: Stable <[email protected]> # 4.12+
2 patches applied to wireless-drivers.git, thanks.
a33fcba6ec01 rtlwifi: btcoexist: Fix breakage of ant_sel for rtl8723be
6d6226928369 rtlwifi: btcoexist: Fix antenna selection code
--
https://patchwork.kernel.org/patch/9937493/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches