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Mon, 8 Aug 2022 15:16:33 +0200 Received: from P-01011.intranet.prolan.hu (10.254.7.28) by atlas.intranet.prolan.hu (10.254.0.229) with Microsoft SMTP Server id 15.1.2507.9 via Frontend Transport; Mon, 8 Aug 2022 15:16:33 +0200 From: =?UTF-8?q?Cs=C3=B3k=C3=A1s=20Bence?= To: CC: =?UTF-8?q?Cs=C3=B3k=C3=A1s=20Bence?= , "Richard Cochran" Subject: [PATCH] fec: Allow changing the PPS channel Date: Mon, 8 Aug 2022 15:15:57 +0200 Message-ID: <20220808131556.163207-1-csokas.bence@prolan.hu> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ESET-AS: R=OK;S=0;OP=CALC;TIME=1659964593;VERSION=7933;MC=2386539450;TRN=0;CRV=0;IPC=;SP=0;SIPS=0;PI=3;F=0 X-ESET-Antispam: OK X-EsetResult: clean, is OK X-EsetId: 37303A29A91EF45661776A X-TM-AS-GCONF: 00 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Makes the PPS channel configurable via the Device Tree (on startup) and sysfs (run-time) Signed-off-by: Csókás Bence --- drivers/net/ethernet/freescale/fec_main.c | 37 +++++++++++++++++++++++ drivers/net/ethernet/freescale/fec_ptp.c | 3 -- 2 files changed, 37 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 4112c1283c40..0c1c489c3826 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include #include @@ -3609,6 +3610,36 @@ static int fec_enet_init_stop_mode(struct fec_enet_private *fep, return ret; } +static ssize_t pps_ch_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct net_device *ndev = to_net_dev(dev); + struct fec_enet_private *fep = netdev_priv(ndev); + + return sprintf(buf, "%d", fep->pps_channel); +} + +static ssize_t pps_ch_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct net_device *ndev = to_net_dev(dev); + struct fec_enet_private *fep = netdev_priv(ndev); + int enable = fep->pps_enable; + struct ptp_clock_request ptp_rq = { .type = PTP_CLK_REQ_PPS }; + + if (enable) + fep->ptp_caps.enable(&fep->ptp_caps, &ptp_rq, 0); + + kstrtoint(buf, 0, &fep->pps_channel); + + if (enable) + fep->ptp_caps.enable(&fep->ptp_caps, &ptp_rq, 1); + + return count; +} + +struct kobj_attribute pps_ch_attr = __ATTR(pps_channel, 0660, pps_ch_show, pps_ch_store); + static int fec_probe(struct platform_device *pdev) { @@ -3705,6 +3736,9 @@ fec_probe(struct platform_device *pdev) fep->phy_interface = interface; } + if (of_property_read_u32(np, "fsl,pps-channel", &fep->pps_channel)) + fep->pps_channel = 0; + fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(fep->clk_ipg)) { ret = PTR_ERR(fep->clk_ipg); @@ -3817,6 +3851,9 @@ fec_probe(struct platform_device *pdev) if (ret) goto failed_register; + if (sysfs_create_file(&ndev->dev.kobj, &pps_ch_attr.attr)) + pr_err("Cannot create pps_channel sysfs file\n"); + device_init_wakeup(&ndev->dev, fep->wol_flag & FEC_WOL_HAS_MAGIC_PACKET); diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index 69dfed4de4ef..a5077eff305b 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -86,8 +86,6 @@ #define FEC_CC_MULT (1 << 31) #define FEC_COUNTER_PERIOD (1 << 31) #define PPS_OUPUT_RELOAD_PERIOD NSEC_PER_SEC -#define FEC_CHANNLE_0 0 -#define DEFAULT_PPS_CHANNEL FEC_CHANNLE_0 /** * fec_ptp_enable_pps @@ -112,7 +110,6 @@ static int fec_ptp_enable_pps(struct fec_enet_private *fep, uint enable) if (fep->pps_enable == enable) return 0; - fep->pps_channel = DEFAULT_PPS_CHANNEL; fep->reload_period = PPS_OUPUT_RELOAD_PERIOD; spin_lock_irqsave(&fep->tmreg_lock, flags); -- 2.25.1