From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B698A27FD7A; Wed, 23 Apr 2025 14:58:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745420329; cv=none; b=Z+0aDe/WkOGpCcDqdBCs02SBWb1I1nRZIzkpnvh0EurZBsH10XNmqObQZWb3aDc1aqlW583s4dPbTnFcQ5aN9BTNHhDni+oPi5685WvjBNU8Ilj9nZ3+Jjj+RjTWytj9lmUDGIqpOlhHAWR5eBl0JZB/2iA9w01b1mKC3BhO3UQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745420329; c=relaxed/simple; bh=MgAfK1+hyfbdfvc4IgP7OE/I5kmmVfSOYnj7BVs0VHM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TH1CRdNy5e38He+2U7BlXqPLZqXajAEFA1arsNlpA0VOShQ9sdV8c9UOM4vG5oMVETHoc8dVdc4E4Qt00xuzIdF61ny1J7gJGkPb1BxoeyWcvq4db3opGWlnIvEGFVdLym6GztKqim8ubxhgTQb/3pVuRMi0uboJfqnRxKwv9+U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NaZae+GJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="NaZae+GJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3198C4CEE2; Wed, 23 Apr 2025 14:58:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1745420329; bh=MgAfK1+hyfbdfvc4IgP7OE/I5kmmVfSOYnj7BVs0VHM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NaZae+GJUuzIuhftqJKoQv4l/YZFQCC6vNEZB8HcPSqvBIao8ShsldyWNqbAy11AH SilRPacZJBmF/65llQVesVcblgok8CdjfJKXMv3XWLKQl3qattyigrbPsWyTOgXWM4 dRbpXEmCkHsOHT5yjqLDH638llSP/YHJfR2KEd9o= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Meghana Malladi , Jacob Keller , Kory Maincent , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.14 082/241] net: ti: icss-iep: Add phase offset configuration for perout signal Date: Wed, 23 Apr 2025 16:42:26 +0200 Message-ID: <20250423142623.931981157@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250423142620.525425242@linuxfoundation.org> References: <20250423142620.525425242@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Meghana Malladi [ Upstream commit 220cb1be647a7ca4e60241405c66f8f612c9b046 ] icss_iep_perout_enable_hw() is a common function for generating both pps and perout signals. When enabling pps, the application needs to only pass enable/disable argument, whereas for perout it supports different flags to configure the signal. In case the app passes a valid phase offset value, the signal should start toggling after that phase offset, else start immediately or as soon as possible. ICSS_IEP_SYNC_START_REG register take number of clock cycles to wait before starting the signal after activation time. Set appropriate value to this register to support phase offset. Signed-off-by: Meghana Malladi Reviewed-by: Jacob Keller Reviewed-by: Kory Maincent Link: https://patch.msgid.link/20250304105753.1552159-3-m-malladi@ti.com Signed-off-by: Jakub Kicinski Stable-dep-of: 7349c9e99793 ("net: ti: icss-iep: Fix possible NULL pointer dereference for perout request") Signed-off-by: Sasha Levin --- drivers/net/ethernet/ti/icssg/icss_iep.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/ti/icssg/icss_iep.c b/drivers/net/ethernet/ti/icssg/icss_iep.c index 2981c19c48b18..b4a34c57b7b48 100644 --- a/drivers/net/ethernet/ti/icssg/icss_iep.c +++ b/drivers/net/ethernet/ti/icssg/icss_iep.c @@ -407,6 +407,7 @@ static int icss_iep_perout_enable_hw(struct icss_iep *iep, struct ptp_perout_request *req, int on) { struct timespec64 ts; + u64 ns_start; u64 ns_width; int ret; u64 cmp; @@ -416,6 +417,14 @@ static int icss_iep_perout_enable_hw(struct icss_iep *iep, ts.tv_nsec = req->on.nsec; ns_width = timespec64_to_ns(&ts); + if (req->flags & PTP_PEROUT_PHASE) { + ts.tv_sec = req->phase.sec; + ts.tv_nsec = req->phase.nsec; + ns_start = timespec64_to_ns(&ts); + } else { + ns_start = 0; + } + if (iep->ops && iep->ops->perout_enable) { ret = iep->ops->perout_enable(iep->clockops_data, req, on, &cmp); if (ret) @@ -430,7 +439,8 @@ static int icss_iep_perout_enable_hw(struct icss_iep *iep, regmap_write(iep->map, ICSS_IEP_SYNC_PWIDTH_REG, div_u64(ns_width, iep->def_inc)); regmap_write(iep->map, ICSS_IEP_SYNC0_PERIOD_REG, 0); - regmap_write(iep->map, ICSS_IEP_SYNC_START_REG, 0); + regmap_write(iep->map, ICSS_IEP_SYNC_START_REG, + div_u64(ns_start, iep->def_inc)); regmap_write(iep->map, ICSS_IEP_SYNC_CTRL_REG, 0); /* one-shot mode */ /* Enable CMP 1 */ regmap_update_bits(iep->map, ICSS_IEP_CMP_CFG_REG, @@ -457,6 +467,8 @@ static int icss_iep_perout_enable_hw(struct icss_iep *iep, regmap_write(iep->map, ICSS_IEP_SYNC_PWIDTH_REG, div_u64(ns_width, iep->def_inc)); + regmap_write(iep->map, ICSS_IEP_SYNC_START_REG, + div_u64(ns_start, iep->def_inc)); /* Enable Sync in single shot mode */ regmap_write(iep->map, ICSS_IEP_SYNC_CTRL_REG, IEP_SYNC_CTRL_SYNC_N_EN(0) | IEP_SYNC_CTRL_SYNC_EN); @@ -487,7 +499,8 @@ static int icss_iep_perout_enable(struct icss_iep *iep, int ret = 0; /* Reject requests with unsupported flags */ - if (req->flags & ~PTP_PEROUT_DUTY_CYCLE) + if (req->flags & ~(PTP_PEROUT_DUTY_CYCLE | + PTP_PEROUT_PHASE)) return -EOPNOTSUPP; mutex_lock(&iep->ptp_clk_mutex); @@ -588,6 +601,7 @@ static int icss_iep_pps_enable(struct icss_iep *iep, int on) if (on) { ns = icss_iep_gettime(iep, NULL); ts = ns_to_timespec64(ns); + rq.perout.flags = 0; rq.perout.period.sec = 1; rq.perout.period.nsec = 0; rq.perout.start.sec = ts.tv_sec + 2; -- 2.39.5