From patchwork Wed Nov 17 15:14:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 12624903 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2ACA4C433F5 for ; Wed, 17 Nov 2021 15:15:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0FBE761BE6 for ; Wed, 17 Nov 2021 15:15:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233999AbhKQPSi (ORCPT ); Wed, 17 Nov 2021 10:18:38 -0500 Received: from marcansoft.com ([212.63.210.85]:33188 "EHLO mail.marcansoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233940AbhKQPSR (ORCPT ); Wed, 17 Nov 2021 10:18:17 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hector@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 5367041F5F; Wed, 17 Nov 2021 15:15:15 +0000 (UTC) From: Hector Martin To: Heikki Krogerus , Greg Kroah-Hartman , Sven Peter Cc: Hector Martin , =?utf-8?q?Guido_G=C3=BCnther?= , Alyssa Rosenzweig , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] usb: typec: tipd: Fix initialization sequence for cd321x Date: Thu, 18 Nov 2021 00:14:50 +0900 Message-Id: <20211117151450.207168-3-marcan@marcan.st> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211117151450.207168-1-marcan@marcan.st> References: <20211117151450.207168-1-marcan@marcan.st> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The power state switch needs to happen first, as that kickstarts the firmware into normal mode. Signed-off-by: Hector Martin Reviewed-by: Heikki Krogerus --- drivers/usb/typec/tipd/core.c | 33 ++++++++++++++++----------------- 1 file changed, 16 insertions(+), 17 deletions(-) diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c index 4da5a0b2aed2..6d27a5b5e3ca 100644 --- a/drivers/usb/typec/tipd/core.c +++ b/drivers/usb/typec/tipd/core.c @@ -707,6 +707,7 @@ static int tps6598x_probe(struct i2c_client *client) u32 conf; u32 vid; int ret; + u64 mask1; tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); if (!tps) @@ -730,11 +731,6 @@ static int tps6598x_probe(struct i2c_client *client) if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) tps->i2c_protocol = true; - /* Make sure the controller has application firmware running */ - ret = tps6598x_check_mode(tps); - if (ret) - return ret; - if (np && of_device_is_compatible(np, "apple,cd321x")) { /* Switch CD321X chips to the correct system power state */ ret = cd321x_switch_power_state(tps, TPS_SYSTEM_POWER_STATE_S0); @@ -742,24 +738,27 @@ static int tps6598x_probe(struct i2c_client *client) return ret; /* CD321X chips have all interrupts masked initially */ - ret = tps6598x_write64(tps, TPS_REG_INT_MASK1, - APPLE_CD_REG_INT_POWER_STATUS_UPDATE | - APPLE_CD_REG_INT_DATA_STATUS_UPDATE | - APPLE_CD_REG_INT_PLUG_EVENT); - if (ret) - return ret; + mask1 = APPLE_CD_REG_INT_POWER_STATUS_UPDATE | + APPLE_CD_REG_INT_DATA_STATUS_UPDATE | + APPLE_CD_REG_INT_PLUG_EVENT; irq_handler = cd321x_interrupt; } else { /* Enable power status, data status and plug event interrupts */ - ret = tps6598x_write64(tps, TPS_REG_INT_MASK1, - TPS_REG_INT_POWER_STATUS_UPDATE | - TPS_REG_INT_DATA_STATUS_UPDATE | - TPS_REG_INT_PLUG_EVENT); - if (ret) - return ret; + mask1 = TPS_REG_INT_POWER_STATUS_UPDATE | + TPS_REG_INT_DATA_STATUS_UPDATE | + TPS_REG_INT_PLUG_EVENT; } + /* Make sure the controller has application firmware running */ + ret = tps6598x_check_mode(tps); + if (ret) + return ret; + + ret = tps6598x_write64(tps, TPS_REG_INT_MASK1, mask1); + if (ret) + return ret; + ret = tps6598x_read32(tps, TPS_REG_STATUS, &status); if (ret < 0) return ret;