From patchwork Mon Jun 24 14:00:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kaistra X-Patchwork-Id: 807213 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 828331E511 for ; Mon, 24 Jun 2024 14:00:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719237646; cv=none; b=GipBxmr7XAtXqqL+cCLSYPT7hxlo4AtpM7WnIwsaGqijP8S3nFikWrSCYttKHix34rhKln/7++xQZjcDYmdP0wGmRZEy+NmZCGNAE9K6wbKSAGQ/dSNIDmAbgMSd2gMx/VskbEwXFO0/M0YpowOsPAjNdFFIn0VA8D3HgmMcOqE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719237646; c=relaxed/simple; bh=RoYjshpK+IIWVzGdkpETLtdAQBZgob90X5dRStXofUw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=LAiTRqO54Zik1HsjWNHHiPJ1T6n9ITsocxNrLI0mzArExRMXakQKe7OcLv8c4kfbGuVjTh+D9r4vlMGFluJEM0Esy4TediNLkWYk3cbODAGnaCkRmQaRqfuGyiEwbLa9Qf2q98cS+YrUbLzknQ2vYY3/dKCS+LjHvl7Z3zMkTcs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=1aMivJBH; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=O+Cmi+h8; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="1aMivJBH"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="O+Cmi+h8" From: Martin Kaistra DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1719237642; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=ezCGn8nfKbzDHH0VqZ5NtPqo/qvHBmxvSLOTRshbd5s=; b=1aMivJBHjH3itagBiIF4ukble+L61EQrwyo6zgz2MqPNspt+EFA5KFj70QrscmcbzZinEv q1txSFelP+fOZ3Y+gz4UGXS8fANkKqFPsYxPn4GAzEf8TvGNMbzKwcdg7qN/eSHE76t7PS FmS5UivcMISjKTlC11Y/uEYd86JiUe0+nHdUzqbSbWNuJyL74mLA/Yee1k81DBTsb3/9Ot 2gsyIpqazGIxVvfc/rXAXB62Sl7ghJul/Rl2BYtd0nyI6ywMK1DLu8m4PVNLBomQmvd6Mk uJbLhyVF+m6852v0mFGFSy1pcqTkuL7/jGlYs92bSaVqJjYxTM1jJ5XbAXqQNQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1719237642; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=ezCGn8nfKbzDHH0VqZ5NtPqo/qvHBmxvSLOTRshbd5s=; b=O+Cmi+h8qhiqCIMCHqxOZCIn6eU6IFJn2CGDWCYX886N16xj8sWu4a0RmkvUH0egsoVaxh UPyiIXIaeb6PrsCA== To: linux-wireless@vger.kernel.org Cc: Jes Sorensen , Ping-Ke Shih , Bitterblue Smith Subject: [PATCH] wifi: rtl8xxxu: 8188f: Limit TX power index Date: Mon, 24 Jun 2024 16:00:37 +0200 Message-Id: <20240624140037.231657-1-martin.kaistra@linutronix.de> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 TX power index is read from the efuse on init, the values get written to the TX power registers when the channel gets switched. When the chip has not yet been calibrated, the efuse values are 0xFF, which on some boards leads to USB timeouts for reading/writing registers after the first frames have been sent. The vendor driver (v5.11.5-1) checks for these invalid values and sets default values instead. Implement something similar in rtl8188fu_parse_efuse(). Fixes: c888183b21f3 ("wifi: rtl8xxxu: Support new chip RTL8188FU") Signed-off-by: Martin Kaistra Reviewed-by: Ping-Ke Shih --- drivers/net/wireless/realtek/rtl8xxxu/8188f.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/8188f.c b/drivers/net/wireless/realtek/rtl8xxxu/8188f.c index bd5a0603b4a23..3abf14d7044f3 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/8188f.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/8188f.c @@ -697,9 +697,14 @@ static void rtl8188fu_init_statistics(struct rtl8xxxu_priv *priv) rtl8xxxu_write32(priv, REG_OFDM0_FA_RSTC, val32); } +#define TX_POWER_INDEX_MAX 0x3F +#define TX_POWER_INDEX_DEFAULT_CCK 0x22 +#define TX_POWER_INDEX_DEFAULT_HT40 0x27 + static int rtl8188fu_parse_efuse(struct rtl8xxxu_priv *priv) { struct rtl8188fu_efuse *efuse = &priv->efuse_wifi.efuse8188fu; + int i; if (efuse->rtl_id != cpu_to_le16(0x8129)) return -EINVAL; @@ -713,6 +718,16 @@ static int rtl8188fu_parse_efuse(struct rtl8xxxu_priv *priv) efuse->tx_power_index_A.ht40_base, sizeof(efuse->tx_power_index_A.ht40_base)); + for (i = 0; i < ARRAY_SIZE(priv->cck_tx_power_index_A); i++) { + if (priv->cck_tx_power_index_A[i] > TX_POWER_INDEX_MAX) + priv->cck_tx_power_index_A[i] = TX_POWER_INDEX_DEFAULT_CCK; + } + + for (i = 0; i < ARRAY_SIZE(priv->ht40_1s_tx_power_index_A); i++) { + if (priv->ht40_1s_tx_power_index_A[i] > TX_POWER_INDEX_MAX) + priv->ht40_1s_tx_power_index_A[i] = TX_POWER_INDEX_DEFAULT_HT40; + } + priv->ofdm_tx_power_diff[0].a = efuse->tx_power_index_A.ht20_ofdm_1s_diff.a; priv->ht20_tx_power_diff[0].a = efuse->tx_power_index_A.ht20_ofdm_1s_diff.b;