From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753350AbcLBUfS (ORCPT ); Fri, 2 Dec 2016 15:35:18 -0500 Received: from lelnx193.ext.ti.com ([198.47.27.77]:24996 "EHLO lelnx193.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753341AbcLBUar (ORCPT ); Fri, 2 Dec 2016 15:30:47 -0500 From: Grygorii Strashko To: "David S. Miller" , , Mugunthan V N , Richard Cochran CC: Sekhar Nori , , , Rob Herring , , Murali Karicheri , Wingman Kwok , Thomas Gleixner , Grygorii Strashko Subject: [PATCH v3 10/13] net: ethernet: ti: cpts: move dt props parsing to cpts driver Date: Fri, 2 Dec 2016 14:30:20 -0600 Message-ID: <20161202203023.25526-11-grygorii.strashko@ti.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20161202203023.25526-1-grygorii.strashko@ti.com> References: <20161202203023.25526-1-grygorii.strashko@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Move DT properties parsing into CPTS driver to simplify CPSW code and CPTS driver porting on other SoC in the future (like Keystone 2) - with this change it will not be required to add the same DT parsing code in Keystone 2 NETCP driver. Signed-off-by: Grygorii Strashko --- drivers/net/ethernet/ti/cpsw.c | 16 +--------------- drivers/net/ethernet/ti/cpsw.h | 2 -- drivers/net/ethernet/ti/cpts.c | 32 +++++++++++++++++++++++++++++--- drivers/net/ethernet/ti/cpts.h | 5 +++-- 4 files changed, 33 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 6c28ef1..ae1ec6a 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -2312,18 +2312,6 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, } data->active_slave = prop; - if (of_property_read_u32(node, "cpts_clock_mult", &prop)) { - dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n"); - return -EINVAL; - } - data->cpts_clock_mult = prop; - - if (of_property_read_u32(node, "cpts_clock_shift", &prop)) { - dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n"); - return -EINVAL; - } - data->cpts_clock_shift = prop; - data->slave_data = devm_kzalloc(&pdev->dev, data->slaves * sizeof(struct cpsw_slave_data), GFP_KERNEL); @@ -2789,9 +2777,7 @@ static int cpsw_probe(struct platform_device *pdev) goto clean_dma_ret; } - cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, - cpsw->data.cpts_clock_mult, - cpsw->data.cpts_clock_shift); + cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpsw->dev->of_node); if (IS_ERR(cpsw->cpts)) { ret = PTR_ERR(cpsw->cpts); goto clean_ale_ret; diff --git a/drivers/net/ethernet/ti/cpsw.h b/drivers/net/ethernet/ti/cpsw.h index 16b54c6..6c3037a 100644 --- a/drivers/net/ethernet/ti/cpsw.h +++ b/drivers/net/ethernet/ti/cpsw.h @@ -31,8 +31,6 @@ struct cpsw_platform_data { u32 channels; /* number of cpdma channels (symmetric) */ u32 slaves; /* number of slave cpgmac ports */ u32 active_slave; /* time stamping, ethtool and SIOCGMIIPHY slave */ - u32 cpts_clock_mult; /* convert input clock ticks to nanoseconds */ - u32 cpts_clock_shift; /* convert input clock ticks to nanoseconds */ u32 ale_entries; /* ale table size */ u32 bd_ram_size; /*buffer descriptor ram size */ u32 mac_control; /* Mac control register */ diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c index 47831b2..5d5c46d 100644 --- a/drivers/net/ethernet/ti/cpts.c +++ b/drivers/net/ethernet/ti/cpts.c @@ -409,10 +409,34 @@ void cpts_unregister(struct cpts *cpts) } EXPORT_SYMBOL_GPL(cpts_unregister); +static int cpts_of_parse(struct cpts *cpts, struct device_node *node) +{ + int ret = -EINVAL; + u32 prop; + + if (of_property_read_u32(node, "cpts_clock_mult", &prop)) + goto of_error; + /* save cc.mult original value as it can be modified + * by cpts_ptp_adjfreq(). + */ + cpts->cc_mult = prop; + + if (of_property_read_u32(node, "cpts_clock_shift", &prop)) + goto of_error; + cpts->cc.shift = prop; + + return 0; + +of_error: + dev_err(cpts->dev, "CPTS: Missing property in the DT.\n"); + return ret; +} + struct cpts *cpts_create(struct device *dev, void __iomem *regs, - u32 mult, u32 shift) + struct device_node *node) { struct cpts *cpts; + int ret; cpts = devm_kzalloc(dev, sizeof(*cpts), GFP_KERNEL); if (!cpts) @@ -423,6 +447,10 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs, spin_lock_init(&cpts->lock); INIT_DELAYED_WORK(&cpts->overflow_work, cpts_overflow_check); + ret = cpts_of_parse(cpts, node); + if (ret) + return ERR_PTR(ret); + cpts->refclk = devm_clk_get(dev, "cpts"); if (IS_ERR(cpts->refclk)) { dev_err(dev, "Failed to get cpts refclk\n"); @@ -433,8 +461,6 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs, cpts->cc.read = cpts_systim_read; cpts->cc.mask = CLOCKSOURCE_MASK(32); - cpts->cc.shift = shift; - cpts->cc_mult = mult; cpts->info = cpts_info; return cpts; diff --git a/drivers/net/ethernet/ti/cpts.h b/drivers/net/ethernet/ti/cpts.h index e7d857c..5da23af 100644 --- a/drivers/net/ethernet/ti/cpts.h +++ b/drivers/net/ethernet/ti/cpts.h @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -133,7 +134,7 @@ 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, - u32 mult, u32 shift); + struct device_node *node); void cpts_release(struct cpts *cpts); static inline void cpts_rx_enable(struct cpts *cpts, int enable) @@ -168,7 +169,7 @@ 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, - u32 mult, u32 shift) + struct device_node *node) { return NULL; } -- 2.10.1