From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68B37C43381 for ; Thu, 21 Feb 2019 09:56:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 333CA2148D for ; Thu, 21 Feb 2019 09:56:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550743014; bh=Xss/aS0/LDO2tBjEVWyQciN8Dv0hzeJqffc1QNz96tU=; h=Subject:To:From:Date:List-ID:From; b=bK5wRQojAXxIPsrOU1huPfGueo+JQesYWVuAve6PK0K6f2xEQPGTm1sQ2MQQRK3sc UsmC0ad7fM/R+OQIhDzZjplT6w0l475bbmHbi4WPl8xw0QE+xZDd8daEGIdwkYb/gI 38WJDZbys4i0Wv8Lys+7ptezNToxUaxKsZq1ZAd0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726260AbfBUJ4x (ORCPT ); Thu, 21 Feb 2019 04:56:53 -0500 Received: from mail.kernel.org ([198.145.29.99]:53228 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725858AbfBUJ4x (ORCPT ); Thu, 21 Feb 2019 04:56:53 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A57D520880; Thu, 21 Feb 2019 09:56:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550743012; bh=Xss/aS0/LDO2tBjEVWyQciN8Dv0hzeJqffc1QNz96tU=; h=Subject:To:From:Date:From; b=fj+aUR23AG8qW1mf2sZMm7YfFuzbjjWhf7thy1Q5UuYgFPGVthqnlv/Tp/nFgzTyt 9a/woWG7zTioW2d3LTr+k1TsoFRDE0k++xfSAwrqYGTEvz563ad8gdtljm8if6eewB jBiVtVMKvOvGb04gvIXSDTYzmcp3/YEqDJvyA3i4= Subject: patch "usb: typec: tps6598x: handle block writes separately with plain-I2C" added to usb-testing To: nikolaus.voss@loewensteinmedical.de, gregkh@linuxfoundation.org, heikki.krogerus@linux.intel.com, linux@roeck-us.net, stable@vger.kernel.org From: Date: Thu, 21 Feb 2019 10:56:41 +0100 Message-ID: <1550743001184208@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled usb: typec: tps6598x: handle block writes separately with plain-I2C to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From 8a863a608d47fa5d9dd15cf841817f73f804cf91 Mon Sep 17 00:00:00 2001 From: Nikolaus Voss Date: Wed, 20 Feb 2019 16:11:38 +0100 Subject: usb: typec: tps6598x: handle block writes separately with plain-I2C adapters Commit 1a2f474d328f handles block _reads_ separately with plain-I2C adapters, but the problem described with regmap-i2c not handling SMBus block transfers (i.e. read and writes) correctly also exists with writes. As workaround, this patch adds a block write function the same way 1a2f474d328f adds a block read function. Fixes: 1a2f474d328f ("usb: typec: tps6598x: handle block reads separately with plain-I2C adapters") Fixes: 0a4c005bd171 ("usb: typec: driver for TI TPS6598x USB Power Delivery controllers") Signed-off-by: Nikolaus Voss Cc: stable Reviewed-by: Guenter Roeck Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tps6598x.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 9947c87d2a1e..c674abe3cf99 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -126,6 +126,20 @@ tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len) return 0; } +static int tps6598x_block_write(struct tps6598x *tps, u8 reg, + void *val, size_t len) +{ + u8 data[TPS_MAX_LEN + 1]; + + if (!tps->i2c_protocol) + return regmap_raw_write(tps->regmap, reg, val, len); + + data[0] = len; + memcpy(&data[1], val, len); + + return regmap_raw_write(tps->regmap, reg, data, sizeof(data)); +} + static inline int tps6598x_read16(struct tps6598x *tps, u8 reg, u16 *val) { return tps6598x_block_read(tps, reg, val, sizeof(u16)); @@ -143,23 +157,23 @@ static inline int tps6598x_read64(struct tps6598x *tps, u8 reg, u64 *val) static inline int tps6598x_write16(struct tps6598x *tps, u8 reg, u16 val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u16)); + return tps6598x_block_write(tps, reg, &val, sizeof(u16)); } static inline int tps6598x_write32(struct tps6598x *tps, u8 reg, u32 val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u32)); + return tps6598x_block_write(tps, reg, &val, sizeof(u32)); } static inline int tps6598x_write64(struct tps6598x *tps, u8 reg, u64 val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u64)); + return tps6598x_block_write(tps, reg, &val, sizeof(u64)); } static inline int tps6598x_write_4cc(struct tps6598x *tps, u8 reg, const char *val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u32)); + return tps6598x_block_write(tps, reg, &val, sizeof(u32)); } static int tps6598x_read_partner_identity(struct tps6598x *tps) @@ -245,8 +259,8 @@ static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd, return -EBUSY; if (in_len) { - ret = regmap_raw_write(tps->regmap, TPS_REG_DATA1, - in_data, in_len); + ret = tps6598x_block_write(tps, TPS_REG_DATA1, + in_data, in_len); if (ret) return ret; } -- 2.20.1