From 08b5d052d17a89bb8706b2888277d0b682dc1610 Mon Sep 17 00:00:00 2001 From: Bitterblue Smith Date: Mon, 15 Apr 2024 23:59:05 +0300 Subject: [PATCH] wifi: rtl8xxxu: Fix the TX power of RTL8192CU, RTL8723AU Don't subtract 1 from the power index. This was added in commit 2fc0b8e5a17d ("rtl8xxxu: Add TX power base values for gen1 parts") for unknown reasons. The vendor drivers don't do this. Also correct the calculations of values written to REG_OFDM0_X{C,D}_TX_IQ_IMBALANCE. According to the vendor driver, these are used for TX power training. With these changes rtl8xxxu sets the TX power of RTL8192CU the same as the vendor driver. None of this appears to have any effect on my RTL8192CU device. Cc: stable@vger.kernel.org Signed-off-by: Bitterblue Smith Reviewed-by: Ping-Ke Shih Signed-off-by: Ping-Ke Shih Link: https://msgid.link/6ae5945b-644e-45e4-a78f-4c7d9c987910@gmail.com --- .../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 25 ++++++++----------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index 870bd952f5902..be50e24337aa9 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -1505,13 +1505,13 @@ rtl8xxxu_gen1_set_tx_power(struct rtl8xxxu_priv *priv, int channel, bool ht40) u8 cck[RTL8723A_MAX_RF_PATHS], ofdm[RTL8723A_MAX_RF_PATHS]; u8 ofdmbase[RTL8723A_MAX_RF_PATHS], mcsbase[RTL8723A_MAX_RF_PATHS]; u32 val32, ofdm_a, ofdm_b, mcs_a, mcs_b; - u8 val8; + u8 val8, base; int group, i; group = rtl8xxxu_gen1_channel_to_group(channel); - cck[0] = priv->cck_tx_power_index_A[group] - 1; - cck[1] = priv->cck_tx_power_index_B[group] - 1; + cck[0] = priv->cck_tx_power_index_A[group]; + cck[1] = priv->cck_tx_power_index_B[group]; if (priv->hi_pa) { if (cck[0] > 0x20) @@ -1522,10 +1522,6 @@ rtl8xxxu_gen1_set_tx_power(struct rtl8xxxu_priv *priv, int channel, bool ht40) ofdm[0] = priv->ht40_1s_tx_power_index_A[group]; ofdm[1] = priv->ht40_1s_tx_power_index_B[group]; - if (ofdm[0]) - ofdm[0] -= 1; - if (ofdm[1]) - ofdm[1] -= 1; ofdmbase[0] = ofdm[0] + priv->ofdm_tx_power_index_diff[group].a; ofdmbase[1] = ofdm[1] + priv->ofdm_tx_power_index_diff[group].b; @@ -1614,20 +1610,19 @@ rtl8xxxu_gen1_set_tx_power(struct rtl8xxxu_priv *priv, int channel, bool ht40) rtl8xxxu_write32(priv, REG_TX_AGC_A_MCS15_MCS12, mcs_a + power_base->reg_0e1c); + val8 = u32_get_bits(mcs_a + power_base->reg_0e1c, 0xff000000); for (i = 0; i < 3; i++) { - if (i != 2) - val8 = (mcsbase[0] > 8) ? (mcsbase[0] - 8) : 0; - else - val8 = (mcsbase[0] > 6) ? (mcsbase[0] - 6) : 0; + base = i != 2 ? 8 : 6; + val8 = max_t(int, val8 - base, 0); rtl8xxxu_write8(priv, REG_OFDM0_XC_TX_IQ_IMBALANCE + i, val8); } + rtl8xxxu_write32(priv, REG_TX_AGC_B_MCS15_MCS12, mcs_b + power_base->reg_0868); + val8 = u32_get_bits(mcs_b + power_base->reg_0868, 0xff000000); for (i = 0; i < 3; i++) { - if (i != 2) - val8 = (mcsbase[1] > 8) ? (mcsbase[1] - 8) : 0; - else - val8 = (mcsbase[1] > 6) ? (mcsbase[1] - 6) : 0; + base = i != 2 ? 8 : 6; + val8 = max_t(int, val8 - base, 0); rtl8xxxu_write8(priv, REG_OFDM0_XD_TX_IQ_IMBALANCE + i, val8); } } -- 2.30.2