diff options
Diffstat (limited to 'drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c')
| -rw-r--r-- | drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c b/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c new file mode 100644 index 000000000000..fd2b0e353d8b --- /dev/null +++ b/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c @@ -0,0 +1,383 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2015-2016 Freescale Semiconductor, Inc. + * Copyright 2017 NXP + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/of.h> +#include <linux/of_net.h> +#include <linux/of_address.h> +#include <linux/of_mdio.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/clk.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> + +#include "pfe_mod.h" + +extern bool pfe_use_old_dts_phy; +struct ls1012a_pfe_platform_data pfe_platform_data; + +static int pfe_get_gemac_if_properties(struct device_node *gem, + int port, + struct ls1012a_pfe_platform_data *pdata) +{ + struct device_node *phy_node = NULL; + int size; + int phy_id = 0; + const u32 *addr; + const u8 *mac_addr; + + addr = of_get_property(gem, "reg", &size); + if (addr) + port = be32_to_cpup(addr); + else + goto err; + + + pdata->ls1012a_eth_pdata[port].gem_id = port; + + mac_addr = of_get_mac_address(gem); + if (!IS_ERR_OR_NULL(mac_addr)) { + memcpy(pdata->ls1012a_eth_pdata[port].mac_addr, mac_addr, + ETH_ALEN); + } + + phy_node = of_parse_phandle(gem, "phy-handle", 0); + pdata->ls1012a_eth_pdata[port].phy_node = phy_node; + if (phy_node) { + pfe_use_old_dts_phy = false; + goto process_phynode; + } else if (of_phy_is_fixed_link(gem)) { + pfe_use_old_dts_phy = false; + if (of_phy_register_fixed_link(gem) < 0) { + pr_err("broken fixed-link specification\n"); + goto err; + } + phy_node = of_node_get(gem); + pdata->ls1012a_eth_pdata[port].phy_node = phy_node; + } else if (of_get_property(gem, "fsl,pfe-phy-if-flags", &size)) { + pfe_use_old_dts_phy = true; + /* Use old dts properties for phy handling */ + addr = of_get_property(gem, "fsl,pfe-phy-if-flags", &size); + pdata->ls1012a_eth_pdata[port].phy_flags = be32_to_cpup(addr); + + addr = of_get_property(gem, "fsl,gemac-phy-id", &size); + if (!addr) { + pr_err("%s:%d Invalid gemac-phy-id....\n", __func__, + __LINE__); + } else { + phy_id = be32_to_cpup(addr); + pdata->ls1012a_eth_pdata[port].phy_id = phy_id; + pdata->ls1012a_mdio_pdata[0].phy_mask &= ~(1 << phy_id); + } + + /* If PHY is enabled, read mdio properties */ + if (pdata->ls1012a_eth_pdata[port].phy_flags & GEMAC_NO_PHY) + goto done; + + } else { + pr_info("%s: No PHY or fixed-link\n", __func__); + return 0; + } + +process_phynode: + pdata->ls1012a_eth_pdata[port].mii_config = of_get_phy_mode(gem); + if ((pdata->ls1012a_eth_pdata[port].mii_config) < 0) + pr_err("%s:%d Incorrect Phy mode....\n", __func__, + __LINE__); + + addr = of_get_property(gem, "fsl,mdio-mux-val", &size); + if (!addr) { + pr_err("%s: Invalid mdio-mux-val....\n", __func__); + } else { + phy_id = be32_to_cpup(addr); + pdata->ls1012a_eth_pdata[port].mdio_muxval = phy_id; + } + + if (pdata->ls1012a_eth_pdata[port].phy_id < 32) + pfe->mdio_muxval[pdata->ls1012a_eth_pdata[port].phy_id] = + pdata->ls1012a_eth_pdata[port].mdio_muxval; + + + pdata->ls1012a_mdio_pdata[port].irq[0] = PHY_POLL; + +done: + return 0; + +err: + return -1; +} + +/* + * + * pfe_platform_probe - + * + * + */ +static int pfe_platform_probe(struct platform_device *pdev) +{ + struct resource res; + int ii, rc, interface_count = 0, size = 0; + const u32 *prop; + struct device_node *np, *gem = NULL; + struct clk *pfe_clk; + + np = pdev->dev.of_node; + + if (!np) { + pr_err("Invalid device node\n"); + return -EINVAL; + } + + pfe = kzalloc(sizeof(*pfe), GFP_KERNEL); + if (!pfe) { + rc = -ENOMEM; + goto err_alloc; + } + + platform_set_drvdata(pdev, pfe); + + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + + if (of_address_to_resource(np, 1, &res)) { + rc = -ENOMEM; + pr_err("failed to get ddr resource\n"); + goto err_ddr; + } + + pfe->ddr_phys_baseaddr = res.start; + pfe->ddr_size = resource_size(&res); + + pfe->ddr_baseaddr = memremap(res.start, resource_size(&res), + MEMREMAP_WB); + if (!pfe->ddr_baseaddr) { + pr_err("memremap() ddr failed\n"); + rc = -ENOMEM; + goto err_ddr; + } + + pfe->scfg = + syscon_regmap_lookup_by_phandle(pdev->dev.of_node, + "fsl,pfe-scfg"); + if (IS_ERR(pfe->scfg)) { + dev_err(&pdev->dev, "No syscfg phandle specified\n"); + return PTR_ERR(pfe->scfg); + } + + pfe->cbus_baseaddr = of_iomap(np, 0); + if (!pfe->cbus_baseaddr) { + rc = -ENOMEM; + pr_err("failed to get axi resource\n"); + goto err_axi; + } + + pfe->hif_irq = platform_get_irq(pdev, 0); + if (pfe->hif_irq < 0) { + pr_err("platform_get_irq for hif failed\n"); + rc = pfe->hif_irq; + goto err_hif_irq; + } + + pfe->wol_irq = platform_get_irq(pdev, 2); + if (pfe->wol_irq < 0) { + pr_err("platform_get_irq for WoL failed\n"); + rc = pfe->wol_irq; + goto err_hif_irq; + } + + /* Read interface count */ + prop = of_get_property(np, "fsl,pfe-num-interfaces", &size); + if (!prop) { + pr_err("Failed to read number of interfaces\n"); + rc = -ENXIO; + goto err_prop; + } + + interface_count = be32_to_cpup(prop); + if (interface_count <= 0) { + pr_err("No ethernet interface count : %d\n", + interface_count); + rc = -ENXIO; + goto err_prop; + } + + pfe_platform_data.ls1012a_mdio_pdata[0].phy_mask = 0xffffffff; + + for (ii = 0; ii < interface_count; ii++) { + gem = of_get_next_child(np, gem); + if (gem) + pfe_get_gemac_if_properties(gem, ii, + &pfe_platform_data); + else + pr_err("Unable to find interface %d\n", ii); + + } + + pfe->dev = &pdev->dev; + + pfe->dev->platform_data = &pfe_platform_data; + + /* declare WoL capabilities */ + device_init_wakeup(&pdev->dev, true); + + /* find the clocks */ + pfe_clk = devm_clk_get(pfe->dev, "pfe"); + if (IS_ERR(pfe_clk)) + return PTR_ERR(pfe_clk); + + /* PFE clock is (platform clock / 2) */ + /* save sys_clk value as KHz */ + pfe->ctrl.sys_clk = clk_get_rate(pfe_clk) / (2 * 1000); + + rc = pfe_probe(pfe); + if (rc < 0) + goto err_probe; + + return 0; + +err_probe: +err_prop: +err_hif_irq: + iounmap(pfe->cbus_baseaddr); + +err_axi: + memunmap(pfe->ddr_baseaddr); + +err_ddr: + platform_set_drvdata(pdev, NULL); + + kfree(pfe); + +err_alloc: + return rc; +} + +/* + * pfe_platform_remove - + */ +static int pfe_platform_remove(struct platform_device *pdev) +{ + struct pfe *pfe = platform_get_drvdata(pdev); + int rc; + + pr_info("%s\n", __func__); + + rc = pfe_remove(pfe); + + iounmap(pfe->cbus_baseaddr); + + memunmap(pfe->ddr_baseaddr); + + platform_set_drvdata(pdev, NULL); + + kfree(pfe); + + return rc; +} + +#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP +int pfe_platform_suspend(struct device *dev) +{ + struct pfe *pfe = platform_get_drvdata(to_platform_device(dev)); + struct net_device *netdev; + int i; + + pfe->wake = 0; + + for (i = 0; i < (NUM_GEMAC_SUPPORT); i++) { + netdev = pfe->eth.eth_priv[i]->ndev; + + netif_device_detach(netdev); + + if (netif_running(netdev)) + if (pfe_eth_suspend(netdev)) + pfe->wake = 1; + } + + /* Shutdown PFE only if we're not waking up the system */ + if (!pfe->wake) { +#if defined(LS1012A_PFE_RESET_WA) + pfe_hif_rx_idle(&pfe->hif); +#endif + pfe_ctrl_suspend(&pfe->ctrl); + pfe_firmware_exit(pfe); + + pfe_hif_exit(pfe); + pfe_hif_lib_exit(pfe); + + pfe_hw_exit(pfe); + } + + return 0; +} + +static int pfe_platform_resume(struct device *dev) +{ + struct pfe *pfe = platform_get_drvdata(to_platform_device(dev)); + struct net_device *netdev; + int i; + + if (!pfe->wake) { + pfe_hw_init(pfe, 1); + pfe_hif_lib_init(pfe); + pfe_hif_init(pfe); +#if !defined(CONFIG_FSL_PPFE_UTIL_DISABLED) + util_enable(); +#endif + tmu_enable(0xf); + class_enable(); + pfe_ctrl_resume(&pfe->ctrl); + } + + for (i = 0; i < (NUM_GEMAC_SUPPORT); i++) { + netdev = pfe->eth.eth_priv[i]->ndev; + + if (pfe->mdio.mdio_priv[i]->mii_bus) + pfe_eth_mdio_reset(pfe->mdio.mdio_priv[i]->mii_bus); + + if (netif_running(netdev)) + pfe_eth_resume(netdev); + + netif_device_attach(netdev); + } + return 0; +} +#else +#define pfe_platform_suspend NULL +#define pfe_platform_resume NULL +#endif + +static const struct dev_pm_ops pfe_platform_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pfe_platform_suspend, pfe_platform_resume) +}; +#endif + +static const struct of_device_id pfe_match[] = { + { + .compatible = "fsl,pfe", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, pfe_match); + +static struct platform_driver pfe_platform_driver = { + .probe = pfe_platform_probe, + .remove = pfe_platform_remove, + .driver = { + .name = "pfe", + .of_match_table = pfe_match, +#ifdef CONFIG_PM + .pm = &pfe_platform_pm_ops, +#endif + }, +}; + +module_platform_driver(pfe_platform_driver); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("PFE Ethernet driver"); +MODULE_AUTHOR("NXP DNCPE"); |