stmmac: split to core library and probe drivers

Instead of registering the platform and PCI drivers in one module let's move
necessary bits to where it belongs. During this procedure we convert the module
registration part to use module_*_driver() macros which makes code simplier.

>From now on the driver consists three parts: core library, PCI, and platform
drivers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 25 insertions, 108 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 33b85bae6c21..7d3af190be55 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -14,7 +14,7 @@ config STMMAC_ETH
 if STMMAC_ETH
 
 config STMMAC_PLATFORM
-        bool "STMMAC Platform bus support"
+        tristate "STMMAC Platform bus support"
         depends on STMMAC_ETH
         default y
         ---help---
@@ -27,7 +27,7 @@ config STMMAC_PLATFORM
           If unsure, say N.
 
 config STMMAC_PCI
-        bool "STMMAC PCI bus support"
+        tristate "STMMAC PCI bus support"
         depends on STMMAC_ETH && PCI
         ---help---
           This is to select the Synopsys DWMAC available on PCI devices,
diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
index 034da704f22f..ac4d5629d905 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
@@ -1,9 +1,12 @@
 obj-$(CONFIG_STMMAC_ETH) += stmmac.o
-stmmac-$(CONFIG_STMMAC_PCI) += stmmac_pci.o
-stmmac-$(CONFIG_STMMAC_PLATFORM) +=     stmmac_platform.o dwmac-meson.o \
-                                        dwmac-sunxi.o dwmac-sti.o \
-                                        dwmac-socfpga.o
 stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o  \
-              chain_mode.o dwmac_lib.o dwmac1000_core.o  dwmac1000_dma.o \
-              dwmac100_core.o dwmac100_dma.o enh_desc.o  norm_desc.o \
+              chain_mode.o dwmac_lib.o dwmac1000_core.o dwmac1000_dma.o \
+              dwmac100_core.o dwmac100_dma.o enh_desc.o norm_desc.o     \
               mmc_core.o stmmac_hwtstamp.o stmmac_ptp.o $(stmmac-y)
+
+obj-$(CONFIG_STMMAC_PLATFORM) += stmmac-platform.o
+stmmac-platform-objs:= stmmac_platform.o dwmac-meson.o dwmac-sunxi.o    \
+                       dwmac-sti.o dwmac-socfpga.o
+
+obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
+stmmac-pci-objs:= stmmac_pci.o
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index bd75ee8b2757..c0a391983372 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -134,65 +134,4 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device,
 void stmmac_disable_eee_mode(struct stmmac_priv *priv);
 bool stmmac_eee_init(struct stmmac_priv *priv);
 
-#ifdef CONFIG_STMMAC_PLATFORM
-extern struct platform_driver stmmac_pltfr_driver;
-
-static inline int stmmac_register_platform(void)
-{
-        int err;
-
-        err = platform_driver_register(&stmmac_pltfr_driver);
-        if (err)
-                pr_err("stmmac: failed to register the platform driver\n");
-
-        return err;
-}
-
-static inline void stmmac_unregister_platform(void)
-{
-        platform_driver_unregister(&stmmac_pltfr_driver);
-}
-#else
-static inline int stmmac_register_platform(void)
-{
-        pr_debug("stmmac: do not register the platf driver\n");
-
-        return 0;
-}
-
-static inline void stmmac_unregister_platform(void)
-{
-}
-#endif /* CONFIG_STMMAC_PLATFORM */
-
-#ifdef CONFIG_STMMAC_PCI
-extern struct pci_driver stmmac_pci_driver;
-static inline int stmmac_register_pci(void)
-{
-        int err;
-
-        err = pci_register_driver(&stmmac_pci_driver);
-        if (err)
-                pr_err("stmmac: failed to register the PCI driver\n");
-
-        return err;
-}
-
-static inline void stmmac_unregister_pci(void)
-{
-        pci_unregister_driver(&stmmac_pci_driver);
-}
-#else
-static inline int stmmac_register_pci(void)
-{
-        pr_debug("stmmac: do not register the PCI driver\n");
-
-        return 0;
-}
-
-static inline void stmmac_unregister_pci(void)
-{
-}
-#endif /* CONFIG_STMMAC_PCI */
-
 #endif /* __STMMAC_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 53db11b29e61..0f1c146fcce1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2885,6 +2885,7 @@ error_clk_get:
 
         return ERR_PTR(ret);
 }
+EXPORT_SYMBOL_GPL(stmmac_dvr_probe);
 
 /**
  * stmmac_dvr_remove
@@ -2914,8 +2915,8 @@ int stmmac_dvr_remove(struct net_device *ndev)
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(stmmac_dvr_remove);
 
-#ifdef CONFIG_PM
 int stmmac_suspend(struct net_device *ndev)
 {
         struct stmmac_priv *priv = netdev_priv(ndev);
@@ -2957,6 +2958,7 @@ int stmmac_suspend(struct net_device *ndev)
         priv->oldduplex = -1;
         return 0;
 }
+EXPORT_SYMBOL_GPL(stmmac_suspend);
 
 int stmmac_resume(struct net_device *ndev)
 {
@@ -3003,37 +3005,7 @@ int stmmac_resume(struct net_device *ndev)
 
         return 0;
 }
-#endif /* CONFIG_PM */
-
-/* Driver can be configured w/ and w/ both PCI and Platf drivers
- * depending on the configuration selected.
- */
-static int __init stmmac_init(void)
-{
-        int ret;
-
-        ret = stmmac_register_platform();
-        if (ret)
-                goto err;
-        ret = stmmac_register_pci();
-        if (ret)
-                goto err_pci;
-        return 0;
-err_pci:
-        stmmac_unregister_platform();
-err:
-        pr_err("stmmac: driver registration failed\n");
-        return ret;
-}
-
-static void __exit stmmac_exit(void)
-{
-        stmmac_unregister_platform();
-        stmmac_unregister_pci();
-}
-
-module_init(stmmac_init);
-module_exit(stmmac_exit);
+EXPORT_SYMBOL_GPL(stmmac_resume);
 
 #ifndef MODULE
 static int __init stmmac_cmdline_opt(char *str)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 5084699baeab..77a6d68f7189 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -158,7 +158,7 @@ static const struct pci_device_id stmmac_id_table[] = {
 
 MODULE_DEVICE_TABLE(pci, stmmac_id_table);
 
-struct pci_driver stmmac_pci_driver = {
+static struct pci_driver stmmac_pci_driver = {
         .name = STMMAC_RESOURCE_NAME,
         .id_table = stmmac_id_table,
         .probe = stmmac_pci_probe,
@@ -168,6 +168,8 @@ struct pci_driver stmmac_pci_driver = {
         },
 };
 
+module_pci_driver(stmmac_pci_driver);
+
 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
 MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 9f18401022e1..e22a960f8bd7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -362,7 +362,7 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
         return ret;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int stmmac_pltfr_suspend(struct device *dev)
 {
         int ret;
@@ -388,13 +388,12 @@ static int stmmac_pltfr_resume(struct device *dev)
 
         return stmmac_resume(ndev);
 }
-
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
 
 static SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops,
-                        stmmac_pltfr_suspend, stmmac_pltfr_resume);
+                         stmmac_pltfr_suspend, stmmac_pltfr_resume);
 
-struct platform_driver stmmac_pltfr_driver = {
+static struct platform_driver stmmac_pltfr_driver = {
         .probe = stmmac_pltfr_probe,
         .remove = stmmac_pltfr_remove,
         .driver = {
@@ -402,9 +401,11 @@ struct platform_driver stmmac_pltfr_driver = {
                    .owner = THIS_MODULE,
                    .pm = &stmmac_pltfr_pm_ops,
                    .of_match_table = of_match_ptr(stmmac_dt_ids),
-                   },
+        },
 };
 
+module_platform_driver(stmmac_pltfr_driver);
+
 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
 MODULE_LICENSE("GPL");