diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 95 |
1 files changed, 61 insertions, 34 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index db56fa7ce8f9..4032b170fe24 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -27,25 +27,19 @@ #include <linux/of.h> #include <linux/of_net.h> #include <linux/of_device.h> + #include "stmmac.h" +#include "stmmac_platform.h" static const struct of_device_id stmmac_dt_ids[] = { -#ifdef CONFIG_DWMAC_MESON + /* SoC specific glue layers should come before generic bindings */ { .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data}, -#endif -#ifdef CONFIG_DWMAC_SUNXI { .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data}, -#endif -#ifdef CONFIG_DWMAC_STI { .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data}, { .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data}, { .compatible = "st,stid127-dwmac", .data = &stid127_dwmac_data}, { .compatible = "st,stih407-dwmac", .data = &stih4xx_dwmac_data}, -#endif -#ifdef CONFIG_DWMAC_SOCFPGA { .compatible = "altr,socfpga-stmmac", .data = &socfpga_gmac_data }, -#endif - /* SoC specific glue layers should come before generic bindings */ { .compatible = "st,spear600-gmac"}, { .compatible = "snps,dwmac-3.610"}, { .compatible = "snps,dwmac-3.70a"}, @@ -57,7 +51,11 @@ MODULE_DEVICE_TABLE(of, stmmac_dt_ids); #ifdef CONFIG_OF -/* This function validates the number of Multicast filtering bins specified +/** + * dwmac1000_validate_mcast_bins - validates the number of Multicast filter bins + * @mcast_bins: Multicast filtering bins + * Description: + * this function validates the number of Multicast filtering bins specified * by the configuration through the device tree. The Synopsys GMAC supports * 64 bins, 128 bins, or 256 bins. "bins" refer to the division of CRC * number space. 64 bins correspond to 6 bits of the CRC, 128 corresponds @@ -83,7 +81,11 @@ static int dwmac1000_validate_mcast_bins(int mcast_bins) return x; } -/* This function validates the number of Unicast address entries supported +/** + * dwmac1000_validate_ucast_entries - validate the Unicast address entries + * @ucast_entries: number of Unicast address entries + * Description: + * This function validates the number of Unicast address entries supported * by a particular Synopsys 10/100/1000 controller. The Synopsys controller * supports 1, 32, 64, or 128 Unicast filter entries for it's Unicast filter * logic. This function validates a valid, supported configuration is @@ -109,6 +111,15 @@ static int dwmac1000_validate_ucast_entries(int ucast_entries) return x; } +/** + * stmmac_probe_config_dt - parse device-tree driver parameters + * @pdev: platform_device structure + * @plat: driver data platform structure + * @mac: MAC address to use + * Description: + * this function is to read the driver parameters from device-tree and + * set some private fields that will be used by the main at runtime. + */ static int stmmac_probe_config_dt(struct platform_device *pdev, struct plat_stmmacenet_data *plat, const char **mac) @@ -177,12 +188,6 @@ static int stmmac_probe_config_dt(struct platform_device *pdev, */ plat->maxmtu = JUMBO_LEN; - /* Set default value for multicast hash bins */ - plat->multicast_filter_bins = HASH_TABLE_SIZE; - - /* Set default value for unicast filter entries */ - plat->unicast_filter_entries = 1; - /* * Currently only the properties needed on SPEAr600 * are provided. All other properties should be added @@ -248,11 +253,11 @@ static int stmmac_probe_config_dt(struct platform_device *pdev, #endif /* CONFIG_OF */ /** - * stmmac_pltfr_probe + * stmmac_pltfr_probe - platform driver probe. * @pdev: platform device pointer - * Description: platform_device probe function. It allocates - * the necessary resources and invokes the main to init - * the net device, register the mdio bus etc. + * Description: platform_device probe function. It is to allocate + * the necessary platform resources, invoke custom helper (if required) and + * invoke the main probe function. */ static int stmmac_pltfr_probe(struct platform_device *pdev) { @@ -270,16 +275,23 @@ static int stmmac_pltfr_probe(struct platform_device *pdev) return PTR_ERR(addr); plat_dat = dev_get_platdata(&pdev->dev); - if (pdev->dev.of_node) { - if (!plat_dat) - plat_dat = devm_kzalloc(&pdev->dev, + + if (!plat_dat) + plat_dat = devm_kzalloc(&pdev->dev, sizeof(struct plat_stmmacenet_data), GFP_KERNEL); - if (!plat_dat) { - pr_err("%s: ERROR: no memory", __func__); - return -ENOMEM; - } + if (!plat_dat) { + pr_err("%s: ERROR: no memory", __func__); + return -ENOMEM; + } + + /* Set default value for multicast hash bins */ + plat_dat->multicast_filter_bins = HASH_TABLE_SIZE; + /* Set default value for unicast filter entries */ + plat_dat->unicast_filter_entries = 1; + + if (pdev->dev.of_node) { ret = stmmac_probe_config_dt(pdev, plat_dat, &mac); if (ret) { pr_err("%s: main dt probe failed", __func__); @@ -368,7 +380,14 @@ static int stmmac_pltfr_remove(struct platform_device *pdev) return ret; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP +/** + * stmmac_pltfr_suspend + * @dev: device pointer + * Description: this function is invoked when suspend the driver and it direcly + * call the main suspend function and then, if required, on some platform, it + * can call an exit helper. + */ static int stmmac_pltfr_suspend(struct device *dev) { int ret; @@ -383,6 +402,13 @@ static int stmmac_pltfr_suspend(struct device *dev) return ret; } +/** + * stmmac_pltfr_resume + * @dev: device pointer + * Description: this function is invoked when resume the driver before calling + * the main resume function, on some platforms, it can call own init helper + * if required. + */ static int stmmac_pltfr_resume(struct device *dev) { struct net_device *ndev = dev_get_drvdata(dev); @@ -394,13 +420,12 @@ 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 = { @@ -408,9 +433,11 @@ 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"); |