// SPDX-License-Identifier: GPL-2.0+ /* * Setup platform devices needed by the Freescale multi-port host * and/or dual-role USB controller modules based on the description * in flat device tree. */ #include #include #include #include #include #include #include #include #include #include struct fsl_usb2_dev_data { char *dr_mode; /* controller mode */ char *drivers[3]; /* drivers to instantiate for this mode */ enum fsl_usb2_operating_modes op_mode; /* operating mode */ }; static struct fsl_usb2_dev_data dr_mode_data[] = { { .dr_mode = "host", .drivers = { "fsl-ehci", NULL, NULL, }, .op_mode = FSL_USB2_DR_HOST, }, { .dr_mode = "otg", .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", }, .op_mode = FSL_USB2_DR_OTG, }, { .dr_mode = "peripheral", .drivers = { "fsl-usb2-udc", NULL, NULL, }, .op_mode = FSL_USB2_DR_DEVICE, }, }; static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np) { const unsigned char *prop; int i; prop = of_get_property(np, "dr_mode", NULL); if (prop) { for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) { if (!strcmp(prop, dr_mode_data[i].dr_mode)) return &dr_mode_data[i]; } } pr_warn("%pOF: Invalid 'dr_mode' property, fallback to host mode\n", np); return &dr_mode_data[0]; /* mode not specified, use host */ } static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type) { if (!phy_type) return FSL_USB2_PHY_NONE; if (!strcasecmp(phy_type, "ulpi")) return FSL_USB2_PHY_ULPI; if (!strcasecmp(phy_type, "utmi")) return FSL_USB2_PHY_UTMI; if (!strcasecmp(phy_type, "utmi_wide")) return FSL_USB2_PHY_UTMI_WIDE; if (!strcasecmp(phy_type, "utmi_dual")) return FSL_USB2_PHY_UTMI_DUAL; if (!strcasecmp(phy_type, "serial")) return FSL_USB2_PHY_SERIAL; return FSL_USB2_PHY_NONE; } static struct platform_device *fsl_usb2_device_register( struct platform_device *ofdev, struct fsl_usb2_platform_data *pdata, const char *name, int id) { struct platform_device *pdev; const struct resource *res = ofdev->resource; unsigned int num = ofdev->num_resources; int retval; pdev = platform_device_alloc(name, id); if (!pdev) { retval = -ENOMEM; goto error; } pdev->dev.parent = &ofdev->dev; pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; if (!pdev->dev.dma_mask) { pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask; } else { retval = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); if (retval) goto error; } retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); if (retval) goto error; if (num) { retval = platform_device_add_resources(pdev, res, num); if (retval) goto error; } device_set_of_node_from_dev(&pdev->dev, &ofdev->dev); retval = platform_device_add(pdev); if (retval) goto error; return pdev; error: platform_device_put(pdev); return ERR_PTR(retval); } static const struct of_device_id fsl_usb2_mph_dr_of_match[]; static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np) { enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE; /* * returns 1 for usb controller version 1.6 * returns 2 for usb controller version 2.2 * returns 3 for usb controller version 2.4 * returns 4 for usb controller version 2.5 * returns 0 otherwise */ if (of_device_is_compatible(np, "fsl-usb2-dr")) { if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6")) ver = FSL_USB_VER_1_6; else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2")) ver = FSL_USB_VER_2_2; else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4")) ver = FSL_USB_VER_2_4; else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5")) ver = FSL_USB_VER_2_5; else /* for previous controller versions */ ver = FSL_USB_VER_OLD; if (ver > FSL_USB_VER_NONE) return ver; } if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr")) return FSL_USB_VER_OLD; if (of_device_is_compatible(np, "fsl-usb2-mph")) { if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6")) ver = FSL_USB_VER_1_6; else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2")) ver = FSL_USB_VER_2_2; else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4")) ver = FSL_USB_VER_2_4; else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5")) ver = FSL_USB_VER_2_5; else /* for previous controller versions */ ver = FSL_USB_VER_OLD; } return ver; } static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) { struct device_node *np = ofdev->dev.of_node; struct platform_device *usb_dev; struct fsl_usb2_platform_data data, *pdata; struct fsl_usb2_dev_data *dev_data; const struct of_device_id *match; const unsigned char *prop; static unsigned int idx; int i; if (!of_device_is_available(np)) return -ENODEV; match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev); if (!match) return -ENODEV; pdata = &data; if (match->data) memcpy(pdata, match->data, sizeof(data)); else memset(pdata, 0, sizeof(data)); dev_data = get_dr_mode_data(np); if (of_device_is_compatible(np, "fsl-usb2-mph")) { if (of_property_present(np, "port0")) pdata->port_enables |= FSL_USB2_PORT0_ENABLED; if (of_property_present(np, "port1")) pdata->port_enables |= FSL_USB2_PORT1_ENABLED; pdata->operating_mode = FSL_USB2_MPH_HOST; } else { pdata->invert_drvvbus = of_property_read_bool(np, "fsl,invert-drvvbus"); pdata->invert_pwr_fault = of_property_read_bool(np, "fsl,invert-pwr-fault"); /* setup mode selected in the device tree */ pdata->operating_mode = dev_data->op_mode; } prop = of_get_property(np, "phy_type", NULL); pdata->phy_mode = determine_usb_phy(prop); pdata->controller_ver = usb_get_ver_info(np); /* Activate Erratum by reading property in device tree */ pdata->has_fsl_erratum_a007792 = of_property_read_bool(np, "fsl,usb-erratum-a007792"); pdata->has_fsl_erratum_a005275 = of_property_read_bool(np, "fsl,usb-erratum-a005275"); pdata->has_fsl_erratum_a005697 = of_property_read_bool(np, "fsl,usb_erratum-a005697"); pdata->has_fsl_erratum_a006918 = of_property_read_bool(np, "fsl,usb_erratum-a006918"); pdata->has_fsl_erratum_14 = of_property_read_bool(np, "fsl,usb_erratum-14"); /* * Determine whether phy_clk_valid needs to be checked * by reading property in device tree */ pdata->check_phy_clk_valid = of_property_read_bool(np, "phy-clk-valid"); if (pdata->have_sysif_regs) { if (pdata->controller_ver == FSL_USB_VER_NONE) { dev_warn(&ofdev->dev, "Could not get controller version\n"); return -ENODEV; } } for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { if (!dev_data->drivers[i]) continue; usb_dev = fsl_usb2_device_register(ofdev, pdata, dev_data->drivers[i], idx); if (IS_ERR(usb_dev)) { dev_err(&ofdev->dev, "Can't register usb device\n"); return PTR_ERR(usb_dev); } } idx++; return 0; } static int __unregister_subdev(struct device *dev, void *d) { platform_device_unregister(to_platform_device(dev)); return 0; } static void fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) { device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); } #ifdef CONFIG_PPC_MPC512x #define USBGENCTRL 0x200 /* NOTE: big endian */ #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */ #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/ #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */ #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */ #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */ #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */ #define ISIPHYCTRL 0x204 /* NOTE: big endian */ #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */ #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */ #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */ #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */ #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */ static int fsl_usb2_mpc5121_init(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); struct clk *clk; int err; clk = devm_clk_get(pdev->dev.parent, "ipg"); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clk\n"); return PTR_ERR(clk); } err = clk_prepare_enable(clk); if (err) { dev_err(&pdev->dev, "failed to enable clk\n"); return err; } pdata->clk = clk; if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { u32 reg = 0; if (pdata->invert_drvvbus) reg |= GC_PPP; if (pdata->invert_pwr_fault) reg |= GC_PFP; out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE); out_be32(pdata->regs + USBGENCTRL, reg); } return 0; } static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); pdata->regs = NULL; if (pdata->clk) clk_disable_unprepare(pdata->clk); } static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { .big_endian_desc = 1, .big_endian_mmio = 1, .es = 1, .have_sysif_regs = 0, .le_setup_buf = 1, .init = fsl_usb2_mpc5121_init, .exit = fsl_usb2_mpc5121_exit, }; #endif /* CONFIG_PPC_MPC512x */ static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = { .have_sysif_regs = 1, }; static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, }, { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, }, #ifdef CONFIG_PPC_MPC512x { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, #endif {}, }; MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match); static struct platform_driver fsl_usb2_mph_dr_driver = { .driver = { .name = "fsl-usb2-mph-dr", .of_match_table = fsl_usb2_mph_dr_of_match, }, .probe = fsl_usb2_mph_dr_of_probe, .remove = fsl_usb2_mph_dr_of_remove, }; module_platform_driver(fsl_usb2_mph_dr_driver); MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); MODULE_AUTHOR("Anatolij Gustschin "); MODULE_LICENSE("GPL");