net: ethernet: stmmac: Add STMMAC_PTP config option

Add this config option to reduce memory usage, if it was not necessary.

./ksize.sh drivers/net/ethernet/stmicro/

before size: 70125 Bytes
after  size: 65984 Bytes
save   size: 4141  Bytes

Signed-off-by: David Wu <david.wu@rock-chips.com>
Change-Id: I82c404a41a7abde6adf38557d8b2096b17b4b6e5

drivers/net/ethernet/stmicro/stmmac/Kconfig

@@ -38,6 +38,12 @@ config STMMAC_FULL
 	  This selects the full function, default is Y, full-featured version
 	  includes 4.10 and other versions, if it is N, only 4.10 core working.
 
+config STMMAC_PTP
+	bool "PTP feature for STMMAC"
+	default STMMAC_ETH
+	help
+	  This selects the ptp timestamp function, default is Y.
+
 config STMMAC_PLATFORM
 	tristate "STMMAC Platform bus support"
 	depends on STMMAC_ETH

drivers/net/ethernet/stmicro/stmmac/Makefile

@@ -2,8 +2,7 @@
 obj-$(CONFIG_STMMAC_ETH) += stmmac.o
 
 stmmac-objs:= stmmac_main.o stmmac_mdio.o dwmac_lib.o	\
-	      mmc_core.o stmmac_hwtstamp.o stmmac_ptp.o	\
+	      mmc_core.o dwmac4_descs.o dwmac4_dma.o	\
-	      dwmac4_descs.o dwmac4_dma.o	\
 	      dwmac4_lib.o dwmac4_core.o hwif.o	\
 	      $(stmmac-y)
 
@@ -15,6 +14,8 @@ stmmac-$(CONFIG_STMMAC_FULL) += ring_mode.o chain_mode.o dwmac1000_core.o	\
 stmmac-$(CONFIG_STMMAC_SELFTESTS) += stmmac_selftests.o
 stmmac-$(CONFIG_STMMAC_ETHTOOL) += stmmac_ethtool.o
 
+stmmac-$(CONFIG_STMMAC_PTP) += stmmac_hwtstamp.o stmmac_ptp.o
+
 # Ordering matters. Generic driver must be last.
 obj-$(CONFIG_STMMAC_PLATFORM)	+= stmmac-platform.o
 obj-$(CONFIG_DWMAC_ANARION)	+= dwmac-anarion.o

drivers/net/ethernet/stmicro/stmmac/hwif.c

@@ -99,7 +99,9 @@ static const struct stmmac_hwif_entry {
 	const void *desc;
 	const void *dma;
 	const void *mac;
+#ifdef CONFIG_STMMAC_PTP
 	const void *hwtimestamp;
+#endif
 	const void *mode;
 	const void *tc;
 	const void *mmc;
@@ -120,7 +122,9 @@ static const struct stmmac_hwif_entry {
 		.desc = NULL,
 		.dma = &dwmac100_dma_ops,
 		.mac = &dwmac100_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = NULL,
 		.tc = NULL,
 		.mmc = &dwmac_mmc_ops,
@@ -138,7 +142,9 @@ static const struct stmmac_hwif_entry {
 		.desc = NULL,
 		.dma = &dwmac1000_dma_ops,
 		.mac = &dwmac1000_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = NULL,
 		.tc = NULL,
 		.mmc = &dwmac_mmc_ops,
@@ -156,7 +162,9 @@ static const struct stmmac_hwif_entry {
 		.desc = &dwmac4_desc_ops,
 		.dma = &dwmac4_dma_ops,
 		.mac = &dwmac4_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = NULL,
 		.tc = &dwmac510_tc_ops,
 		.mmc = &dwmac_mmc_ops,
@@ -174,7 +182,9 @@ static const struct stmmac_hwif_entry {
 		.desc = &dwmac4_desc_ops,
 		.dma = &dwmac4_dma_ops,
 		.mac = &dwmac410_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = &dwmac4_ring_mode_ops,
 		.tc = &dwmac510_tc_ops,
 		.mmc = &dwmac_mmc_ops,
@@ -194,7 +204,9 @@ static const struct stmmac_hwif_entry {
 		.desc = &dwmac4_desc_ops,
 		.dma = &dwmac410_dma_ops,
 		.mac = &dwmac410_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = &dwmac4_ring_mode_ops,
 #ifdef CONFIG_STMMAC_FULL
 		.tc = &dwmac510_tc_ops,
@@ -216,7 +228,9 @@ static const struct stmmac_hwif_entry {
 		.desc = &dwmac4_desc_ops,
 		.dma = &dwmac410_dma_ops,
 		.mac = &dwmac510_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = &dwmac4_ring_mode_ops,
 		.tc = &dwmac510_tc_ops,
 		.mmc = &dwmac_mmc_ops,
@@ -235,7 +249,9 @@ static const struct stmmac_hwif_entry {
 		.desc = &dwxgmac210_desc_ops,
 		.dma = &dwxgmac210_dma_ops,
 		.mac = &dwxgmac210_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = NULL,
 		.tc = &dwmac510_tc_ops,
 		.mmc = &dwxgmac_mmc_ops,
@@ -254,7 +270,9 @@ static const struct stmmac_hwif_entry {
 		.desc = &dwxgmac210_desc_ops,
 		.dma = &dwxgmac210_dma_ops,
 		.mac = &dwxlgmac2_ops,
+#ifdef CONFIG_STMMAC_PTP
 		.hwtimestamp = &stmmac_ptp,
+#endif
 		.mode = NULL,
 		.tc = &dwmac510_tc_ops,
 		.mmc = &dwxgmac_mmc_ops,
@@ -325,7 +343,9 @@ int stmmac_hwif_init(struct stmmac_priv *priv)
 		mac->desc = mac->desc ? : entry->desc;
 		mac->dma = mac->dma ? : entry->dma;
 		mac->mac = mac->mac ? : entry->mac;
+#ifdef CONFIG_STMMAC_PTP
 		mac->ptp = mac->ptp ? : entry->hwtimestamp;
+#endif
 		mac->mode = mac->mode ? : entry->mode;
 		mac->tc = mac->tc ? : entry->tc;
 		mac->mmc = mac->mmc ? : entry->mmc;

drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -265,8 +265,18 @@ static inline void stmmac_set_ethtool_ops(struct net_device *netdev)
 }
 #endif
 
+#ifdef CONFIG_STMMAC_PTP
 void stmmac_ptp_register(struct stmmac_priv *priv);
 void stmmac_ptp_unregister(struct stmmac_priv *priv);
+#else
+static inline void stmmac_ptp_register(struct stmmac_priv *priv)
+{
+}
+
+static inline void stmmac_ptp_unregister(struct stmmac_priv *priv)
+{
+}
+#endif
 int stmmac_resume(struct device *dev);
 int stmmac_suspend(struct device *dev);
 int stmmac_dvr_remove(struct device *dev);

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -470,6 +470,7 @@ static void stmmac_get_rx_hwtstamp(struct stmmac_priv *priv, struct dma_desc *p,
 	}
 }
 
+#ifdef CONFIG_STMMAC_PTP
 /**
  *  stmmac_hwtstamp_set - control hardware timestamping.
  *  @dev: device pointer.
@@ -723,6 +724,7 @@ static int stmmac_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
 	return copy_to_user(ifr->ifr_data, config,
 			    sizeof(*config)) ? -EFAULT : 0;
 }
+#endif /* CONFIG_STMMAC_PTP */
 
 /**
  * stmmac_init_ptp - init PTP
@@ -763,7 +765,8 @@ static int stmmac_init_ptp(struct stmmac_priv *priv)
 
 static void stmmac_release_ptp(struct stmmac_priv *priv)
 {
-	clk_disable_unprepare(priv->plat->clk_ptp_ref);
+	if (IS_ENABLED(CONFIG_STMMAC_PTP))
+		clk_disable_unprepare(priv->plat->clk_ptp_ref);
 	stmmac_ptp_unregister(priv);
 }
 
@@ -2704,7 +2707,7 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
 
 	stmmac_mmc_setup(priv);
 
-	if (init_ptp) {
+	if (IS_ENABLED(CONFIG_STMMAC_PTP) && init_ptp) {
 		ret = clk_prepare_enable(priv->plat->clk_ptp_ref);
 		if (ret < 0)
 			netdev_warn(priv->dev, "failed to enable PTP reference clock: %d\n", ret);
@@ -2780,7 +2783,8 @@ static void stmmac_hw_teardown(struct net_device *dev)
 {
 	struct stmmac_priv *priv = netdev_priv(dev);
 
-	clk_disable_unprepare(priv->plat->clk_ptp_ref);
+	if (IS_ENABLED(CONFIG_STMMAC_PTP))
+		clk_disable_unprepare(priv->plat->clk_ptp_ref);
 }
 
 /**
@@ -2970,7 +2974,8 @@ static int stmmac_release(struct net_device *dev)
 
 	netif_carrier_off(dev);
 
-	stmmac_release_ptp(priv);
+	if (IS_ENABLED(CONFIG_STMMAC_PTP))
+		stmmac_release_ptp(priv);
 
 	return 0;
 }
@@ -4216,12 +4221,14 @@ static int stmmac_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	case SIOCSMIIREG:
 		ret = phylink_mii_ioctl(priv->phylink, rq, cmd);
 		break;
+#ifdef CONFIG_STMMAC_PTP
 	case SIOCSHWTSTAMP:
 		ret = stmmac_hwtstamp_set(dev, rq);
 		break;
 	case SIOCGHWTSTAMP:
 		ret = stmmac_hwtstamp_get(dev, rq);
 		break;
+#endif
 	default:
 		break;
 	}
@@ -5229,7 +5236,8 @@ int stmmac_suspend(struct device *dev)
 		stmmac_mac_set(priv, priv->ioaddr, false);
 		pinctrl_pm_select_sleep_state(priv->device);
 		/* Disable clock in case of PWM is off */
-		clk_disable_unprepare(priv->plat->clk_ptp_ref);
+		if (IS_ENABLED(CONFIG_STMMAC_PTP))
+			clk_disable_unprepare(priv->plat->clk_ptp_ref);
 		clk_disable_unprepare(priv->plat->pclk);
 		clk_disable_unprepare(priv->plat->stmmac_clk);
 	}
@@ -5299,7 +5307,7 @@ int stmmac_resume(struct device *dev)
 		/* enable the clk previously disabled */
 		clk_prepare_enable(priv->plat->stmmac_clk);
 		clk_prepare_enable(priv->plat->pclk);
-		if (priv->plat->clk_ptp_ref)
+		if (IS_ENABLED(CONFIG_STMMAC_PTP) && priv->plat->clk_ptp_ref)
 			clk_prepare_enable(priv->plat->clk_ptp_ref);
 		/* reset the phy so that it's ready */
 		if (priv->mii)