/* * usb-host.c - OMAP USB Host * * This file will contain the board specific details for the * Synopsys EHCI/OHCI host controller on OMAP3430 and onwards * * Copyright (C) 2007-2011 Texas Instruments * Author: Vikram Pandita <vikram.pandita@ti.com> * Author: Keshava Munegowda <keshava_mgowda@ti.com> * * Generalization by: * Felipe Balbi <balbi@ti.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/types.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/dma-mapping.h> #include <linux/regulator/machine.h> #include <linux/regulator/fixed.h> #include <linux/string.h> #include <linux/io.h> #include <linux/gpio.h> #include <linux/usb/phy.h> #include <linux/usb/nop-usb-xceiv.h> #include "soc.h" #include "omap_device.h" #include "mux.h" #include "usb.h" #ifdef CONFIG_MFD_OMAP_USB_HOST #define OMAP_USBHS_DEVICE "usbhs_omap" #define OMAP_USBTLL_DEVICE "usbhs_tll" #define USBHS_UHH_HWMODNAME "usb_host_hs" #define USBHS_TLL_HWMODNAME "usb_tll_hs" /* MUX settings for EHCI pins */ /* * setup_ehci_io_mux - initialize IO pad mux for USBHOST */ static void __init setup_ehci_io_mux(const enum usbhs_omap_port_mode *port_mode) { switch (port_mode[0]) { case OMAP_EHCI_PORT_MODE_PHY: omap_mux_init_signal("hsusb1_stp", OMAP_PIN_OUTPUT); omap_mux_init_signal("hsusb1_clk", OMAP_PIN_OUTPUT); omap_mux_init_signal("hsusb1_dir", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_nxt", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data1", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data2", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data3", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data4", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data5", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data6", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_data7", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_EHCI_PORT_MODE_TLL: omap_mux_init_signal("hsusb1_tll_stp", OMAP_PIN_INPUT_PULLUP); omap_mux_init_signal("hsusb1_tll_clk", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_dir", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_nxt", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data1", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data2", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data3", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data4", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data5", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data6", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb1_tll_data7", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_USBHS_PORT_MODE_UNUSED: /* FALLTHROUGH */ default: break; } switch (port_mode[1]) { case OMAP_EHCI_PORT_MODE_PHY: omap_mux_init_signal("hsusb2_stp", OMAP_PIN_OUTPUT); omap_mux_init_signal("hsusb2_clk", OMAP_PIN_OUTPUT); omap_mux_init_signal("hsusb2_dir", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_nxt", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data1", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data2", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data3", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data4", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data5", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data6", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_data7", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_EHCI_PORT_MODE_TLL: omap_mux_init_signal("hsusb2_tll_stp", OMAP_PIN_INPUT_PULLUP); omap_mux_init_signal("hsusb2_tll_clk", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_dir", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_nxt", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data1", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data2", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data3", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data4", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data5", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data6", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb2_tll_data7", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_USBHS_PORT_MODE_UNUSED: /* FALLTHROUGH */ default: break; } switch (port_mode[2]) { case OMAP_EHCI_PORT_MODE_PHY: printk(KERN_WARNING "Port3 can't be used in PHY mode\n"); break; case OMAP_EHCI_PORT_MODE_TLL: omap_mux_init_signal("hsusb3_tll_stp", OMAP_PIN_INPUT_PULLUP); omap_mux_init_signal("hsusb3_tll_clk", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_dir", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_nxt", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data1", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data2", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data3", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data4", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data5", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data6", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("hsusb3_tll_data7", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_USBHS_PORT_MODE_UNUSED: /* FALLTHROUGH */ default: break; } return; } static void __init setup_ohci_io_mux(const enum usbhs_omap_port_mode *port_mode) { switch (port_mode[0]) { case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: omap_mux_init_signal("mm1_rxdp", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("mm1_rxdm", OMAP_PIN_INPUT_PULLDOWN); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: omap_mux_init_signal("mm1_rxrcv", OMAP_PIN_INPUT_PULLDOWN); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: omap_mux_init_signal("mm1_txen_n", OMAP_PIN_OUTPUT); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: omap_mux_init_signal("mm1_txse0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("mm1_txdat", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_USBHS_PORT_MODE_UNUSED: /* FALLTHROUGH */ default: break; } switch (port_mode[1]) { case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: omap_mux_init_signal("mm2_rxdp", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("mm2_rxdm", OMAP_PIN_INPUT_PULLDOWN); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: omap_mux_init_signal("mm2_rxrcv", OMAP_PIN_INPUT_PULLDOWN); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: omap_mux_init_signal("mm2_txen_n", OMAP_PIN_OUTPUT); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: omap_mux_init_signal("mm2_txse0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("mm2_txdat", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_USBHS_PORT_MODE_UNUSED: /* FALLTHROUGH */ default: break; } switch (port_mode[2]) { case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: omap_mux_init_signal("mm3_rxdp", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("mm3_rxdm", OMAP_PIN_INPUT_PULLDOWN); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: omap_mux_init_signal("mm3_rxrcv", OMAP_PIN_INPUT_PULLDOWN); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: omap_mux_init_signal("mm3_txen_n", OMAP_PIN_OUTPUT); /* FALLTHROUGH */ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: omap_mux_init_signal("mm3_txse0", OMAP_PIN_INPUT_PULLDOWN); omap_mux_init_signal("mm3_txdat", OMAP_PIN_INPUT_PULLDOWN); break; case OMAP_USBHS_PORT_MODE_UNUSED: /* FALLTHROUGH */ default: break; } } void __init usbhs_init(struct usbhs_omap_platform_data *pdata) { struct omap_hwmod *uhh_hwm, *tll_hwm; struct platform_device *pdev; int bus_id = -1; if (cpu_is_omap34xx()) { setup_ehci_io_mux(pdata->port_mode); setup_ohci_io_mux(pdata->port_mode); if (omap_rev() <= OMAP3430_REV_ES2_1) pdata->single_ulpi_bypass = true; } uhh_hwm = omap_hwmod_lookup(USBHS_UHH_HWMODNAME); if (!uhh_hwm) { pr_err("Could not look up %s\n", USBHS_UHH_HWMODNAME); return; } tll_hwm = omap_hwmod_lookup(USBHS_TLL_HWMODNAME); if (!tll_hwm) { pr_err("Could not look up %s\n", USBHS_TLL_HWMODNAME); return; } pdev = omap_device_build(OMAP_USBTLL_DEVICE, bus_id, tll_hwm, pdata, sizeof(*pdata)); if (IS_ERR(pdev)) { pr_err("Could not build hwmod device %s\n", USBHS_TLL_HWMODNAME); return; } pdev = omap_device_build(OMAP_USBHS_DEVICE, bus_id, uhh_hwm, pdata, sizeof(*pdata)); if (IS_ERR(pdev)) { pr_err("Could not build hwmod devices %s\n", USBHS_UHH_HWMODNAME); return; } } #else void __init usbhs_init(struct usbhs_omap_platform_data *pdata) { } #endif /* Template for PHY regulators */ static struct fixed_voltage_config hsusb_reg_config = { /* .supply_name filled later */ .microvolts = 3300000, .gpio = -1, /* updated later */ .startup_delay = 70000, /* 70msec */ .enable_high = 1, /* updated later */ .enabled_at_boot = 0, /* keep in RESET */ /* .init_data filled later */ }; static const char *nop_name = "nop_usb_xceiv"; /* NOP PHY driver */ static const char *reg_name = "reg-fixed-voltage"; /* Regulator driver */ /** * usbhs_add_regulator - Add a gpio based fixed voltage regulator device * @name: name for the regulator * @dev_id: device id of the device this regulator supplies power to * @dev_supply: supply name that the device expects * @gpio: GPIO number * @polarity: 1 - Active high, 0 - Active low */ static int usbhs_add_regulator(char *name, char *dev_id, char *dev_supply, int gpio, int polarity) { struct regulator_consumer_supply *supplies; struct regulator_init_data *reg_data; struct fixed_voltage_config *config; struct platform_device *pdev; struct platform_device_info pdevinfo; int ret = -ENOMEM; supplies = kzalloc(sizeof(*supplies), GFP_KERNEL); if (!supplies) return -ENOMEM; supplies->supply = dev_supply; supplies->dev_name = dev_id; reg_data = kzalloc(sizeof(*reg_data), GFP_KERNEL); if (!reg_data) goto err_data; reg_data->constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS; reg_data->consumer_supplies = supplies; reg_data->num_consumer_supplies = 1; config = kmemdup(&hsusb_reg_config, sizeof(hsusb_reg_config), GFP_KERNEL); if (!config) goto err_config; config->supply_name = kstrdup(name, GFP_KERNEL); if (!config->supply_name) goto err_supplyname; config->gpio = gpio; config->enable_high = polarity; config->init_data = reg_data; /* create a regulator device */ memset(&pdevinfo, 0, sizeof(pdevinfo)); pdevinfo.name = reg_name; pdevinfo.id = PLATFORM_DEVID_AUTO; pdevinfo.data = config; pdevinfo.size_data = sizeof(*config); pdev = platform_device_register_full(&pdevinfo); if (IS_ERR(pdev)) { ret = PTR_ERR(pdev); pr_err("%s: Failed registering regulator %s for %s : %d\n", __func__, name, dev_id, ret); goto err_register; } return 0; err_register: kfree(config->supply_name); err_supplyname: kfree(config); err_config: kfree(reg_data); err_data: kfree(supplies); return ret; } #define MAX_STR 20 int usbhs_init_phys(struct usbhs_phy_data *phy, int num_phys) { char rail_name[MAX_STR]; int i; struct platform_device *pdev; char *phy_id; struct platform_device_info pdevinfo; for (i = 0; i < num_phys; i++) { if (!phy->port) { pr_err("%s: Invalid port 0. Must start from 1\n", __func__); continue; } /* do we need a NOP PHY device ? */ if (!gpio_is_valid(phy->reset_gpio) && !gpio_is_valid(phy->vcc_gpio)) continue; phy_id = kmalloc(MAX_STR, GFP_KERNEL); if (!phy_id) { pr_err("%s: kmalloc() failed\n", __func__); return -ENOMEM; } /* create a NOP PHY device */ memset(&pdevinfo, 0, sizeof(pdevinfo)); pdevinfo.name = nop_name; pdevinfo.id = phy->port; pdevinfo.data = phy->platform_data; pdevinfo.size_data = sizeof(struct nop_usb_xceiv_platform_data); scnprintf(phy_id, MAX_STR, "nop_usb_xceiv.%d", phy->port); pdev = platform_device_register_full(&pdevinfo); if (IS_ERR(pdev)) { pr_err("%s: Failed to register device %s : %ld\n", __func__, phy_id, PTR_ERR(pdev)); kfree(phy_id); continue; } usb_bind_phy("ehci-omap.0", phy->port - 1, phy_id); /* Do we need RESET regulator ? */ if (gpio_is_valid(phy->reset_gpio)) { scnprintf(rail_name, MAX_STR, "hsusb%d_reset", phy->port); usbhs_add_regulator(rail_name, phy_id, "reset", phy->reset_gpio, 1); } /* Do we need VCC regulator ? */ if (gpio_is_valid(phy->vcc_gpio)) { scnprintf(rail_name, MAX_STR, "hsusb%d_vcc", phy->port); usbhs_add_regulator(rail_name, phy_id, "vcc", phy->vcc_gpio, phy->vcc_polarity); } phy++; } return 0; }