From patchwork Fri Mar 20 19:42:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Grygorii Strashko X-Patchwork-Id: 211541 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 B5371C4332E for ; Fri, 20 Mar 2020 19:43:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 81EDB20781 for ; Fri, 20 Mar 2020 19:43:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="yJhZTFK7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727464AbgCTTnx (ORCPT ); Fri, 20 Mar 2020 15:43:53 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:44774 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727447AbgCTTnw (ORCPT ); Fri, 20 Mar 2020 15:43:52 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 02KJhmBW018674; Fri, 20 Mar 2020 14:43:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1584733428; bh=GPDfnTLXIFqL1TwhFk7bFb7bgEmGnFHMWKi6EbpWGnQ=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=yJhZTFK7bWrx6zwCM7papYKKLvnGKUq7n2u1ZgAywWMexQHlu0J1QekF8c4mTHJeQ OSBnPmfqkags1LWX8+R3GjarEyIzUxtax/bJitY2acKyWodHZb9HZ0LypyoaQhLSu6 DscgwggvHrnI4Sb8bLwDqIvRIDaeX81x14qpZHs4= Received: from DFLE112.ent.ti.com (dfle112.ent.ti.com [10.64.6.33]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02KJhmXf010759; Fri, 20 Mar 2020 14:43:48 -0500 Received: from DFLE108.ent.ti.com (10.64.6.29) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Fri, 20 Mar 2020 14:43:48 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Fri, 20 Mar 2020 14:43:48 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02KJhldn043440; Fri, 20 Mar 2020 14:43:47 -0500 From: Grygorii Strashko To: "David S . Miller" , Richard Cochran , Lokesh Vutla , Tony Lindgren CC: Sekhar Nori , Murali Karicheri , netdev , , , Grygorii Strashko Subject: [PATCH net-next v3 10/11] net: ethernet: ti: cpts: add support for HW_TS_PUSH events Date: Fri, 20 Mar 2020 21:42:43 +0200 Message-ID: <20200320194244.4703-11-grygorii.strashko@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200320194244.4703-1-grygorii.strashko@ti.com> References: <20200320194244.4703-1-grygorii.strashko@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Hence CPTS IRQ support is in place the W_TS_PUSH events can be added. PWM capable DmTimers can be used to generete input signals for CPTS on TI AM335x/AM437x/DRA7 SoCs to be timestamped: AM335x/AM437x: timer4 - timer7 DRA7/AM57xx: timer13 - timer16 Signed-off-by: Grygorii Strashko --- drivers/net/ethernet/ti/cpsw_priv.c | 5 ++- drivers/net/ethernet/ti/cpts.c | 52 ++++++++++++++++++++++++++- drivers/net/ethernet/ti/cpts.h | 5 +-- drivers/net/ethernet/ti/netcp_ethss.c | 3 +- 4 files changed, 60 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c index 97a058ca60ac..099208927400 100644 --- a/drivers/net/ethernet/ti/cpsw_priv.c +++ b/drivers/net/ethernet/ti/cpsw_priv.c @@ -28,6 +28,8 @@ #include "cpsw_sl.h" #include "davinci_cpdma.h" +#define CPTS_N_ETX_TS 4 + int (*cpsw_slave_index)(struct cpsw_common *cpsw, struct cpsw_priv *priv); void cpsw_intr_enable(struct cpsw_common *cpsw) @@ -522,7 +524,8 @@ int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs, if (!cpts_node) cpts_node = cpsw->dev->of_node; - cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpts_node); + cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpts_node, + CPTS_N_ETX_TS); if (IS_ERR(cpsw->cpts)) { ret = PTR_ERR(cpsw->cpts); cpdma_ctlr_destroy(cpsw->dma); diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c index 187fd1398b7e..403e1dbed673 100644 --- a/drivers/net/ethernet/ti/cpts.c +++ b/drivers/net/ethernet/ti/cpts.c @@ -32,6 +32,11 @@ struct cpts_skb_cb_data { #define cpts_read32(c, r) readl_relaxed(&c->reg->r) #define cpts_write32(c, v, r) writel_relaxed(v, &c->reg->r) +static int cpts_event_port(struct cpts_event *event) +{ + return (event->high >> PORT_NUMBER_SHIFT) & PORT_NUMBER_MASK; +} + static int event_expired(struct cpts_event *event) { return time_after(jiffies, event->tmo); @@ -99,6 +104,7 @@ static void cpts_purge_txq(struct cpts *cpts) */ static int cpts_fifo_read(struct cpts *cpts, int match) { + struct ptp_clock_event pevent; bool need_schedule = false; struct cpts_event *event; unsigned long flags; @@ -146,7 +152,12 @@ static int cpts_fifo_read(struct cpts *cpts, int match) break; case CPTS_EV_ROLL: case CPTS_EV_HALF: + break; case CPTS_EV_HW: + pevent.timestamp = event->timestamp; + pevent.type = PTP_CLOCK_EXTTS; + pevent.index = cpts_event_port(event) - 1; + ptp_clock_event(cpts->clock, &pevent); break; default: dev_err(cpts->dev, "cpts: unknown event type\n"); @@ -272,9 +283,45 @@ static int cpts_ptp_settime(struct ptp_clock_info *ptp, return 0; } +static int cpts_extts_enable(struct cpts *cpts, u32 index, int on) +{ + u32 v; + + if (index >= cpts->info.n_ext_ts) + return -ENXIO; + + if (((cpts->hw_ts_enable & BIT(index)) >> index) == on) + return 0; + + mutex_lock(&cpts->ptp_clk_mutex); + + v = cpts_read32(cpts, control); + if (on) { + v |= BIT(8 + index); + cpts->hw_ts_enable |= BIT(index); + } else { + v &= ~BIT(8 + index); + cpts->hw_ts_enable &= ~BIT(index); + } + cpts_write32(cpts, v, control); + + mutex_unlock(&cpts->ptp_clk_mutex); + + return 0; +} + static int cpts_ptp_enable(struct ptp_clock_info *ptp, struct ptp_clock_request *rq, int on) { + struct cpts *cpts = container_of(ptp, struct cpts, info); + + switch (rq->type) { + case PTP_CLK_REQ_EXTTS: + return cpts_extts_enable(cpts, rq->extts.index, on); + default: + break; + } + return -EOPNOTSUPP; } @@ -751,7 +798,7 @@ static int cpts_of_parse(struct cpts *cpts, struct device_node *node) } struct cpts *cpts_create(struct device *dev, void __iomem *regs, - struct device_node *node) + struct device_node *node, u32 n_ext_ts) { struct cpts *cpts; int ret; @@ -790,6 +837,9 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs, cpts->cc.mask = CLOCKSOURCE_MASK(32); cpts->info = cpts_info; + if (n_ext_ts) + cpts->info.n_ext_ts = n_ext_ts; + cpts_calc_mult_shift(cpts); /* save cc.mult original value as it can be modified * by cpts_ptp_adjfreq(). diff --git a/drivers/net/ethernet/ti/cpts.h b/drivers/net/ethernet/ti/cpts.h index e18cb5e436fe..acffe8a29b32 100644 --- a/drivers/net/ethernet/ti/cpts.h +++ b/drivers/net/ethernet/ti/cpts.h @@ -121,6 +121,7 @@ struct cpts { struct mutex ptp_clk_mutex; /* sync PTP interface and worker */ bool irq_poll; struct completion ts_push_complete; + u32 hw_ts_enable; }; int cpts_rx_timestamp(struct cpts *cpts, struct sk_buff *skb); @@ -128,7 +129,7 @@ void cpts_tx_timestamp(struct cpts *cpts, struct sk_buff *skb); int cpts_register(struct cpts *cpts); void cpts_unregister(struct cpts *cpts); struct cpts *cpts_create(struct device *dev, void __iomem *regs, - struct device_node *node); + struct device_node *node, u32 n_ext_ts); void cpts_release(struct cpts *cpts); void cpts_misc_interrupt(struct cpts *cpts); @@ -160,7 +161,7 @@ static inline void cpts_tx_timestamp(struct cpts *cpts, struct sk_buff *skb) static inline struct cpts *cpts_create(struct device *dev, void __iomem *regs, - struct device_node *node) + struct device_node *node, u32 n_ext_ts) { return NULL; } diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c index fb36115e9c51..9d6e27fb710e 100644 --- a/drivers/net/ethernet/ti/netcp_ethss.c +++ b/drivers/net/ethernet/ti/netcp_ethss.c @@ -3716,7 +3716,8 @@ static int gbe_probe(struct netcp_device *netcp_device, struct device *dev, if (!cpts_node) cpts_node = of_node_get(node); - gbe_dev->cpts = cpts_create(gbe_dev->dev, gbe_dev->cpts_reg, cpts_node); + gbe_dev->cpts = cpts_create(gbe_dev->dev, gbe_dev->cpts_reg, + cpts_node, 0); of_node_put(cpts_node); if (IS_ENABLED(CONFIG_TI_CPTS) && IS_ERR(gbe_dev->cpts)) { ret = PTR_ERR(gbe_dev->cpts);