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-rw-r--r--arch/arm/mach-omap2/usb-host.c496
1 files changed, 496 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
new file mode 100644
index 000000000..745367c0c
--- /dev/null
+++ b/arch/arm/mach-omap2/usb-host.c
@@ -0,0 +1,496 @@
+/*
+ * 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/usb_phy_generic.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 = "usb_phy_generic"; /* 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;
+ struct usb_phy_generic_platform_data nop_pdata;
+
+ 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;
+ }
+
+ /* set platform data */
+ memset(&nop_pdata, 0, sizeof(nop_pdata));
+ if (gpio_is_valid(phy->vcc_gpio))
+ nop_pdata.needs_vcc = true;
+ nop_pdata.gpio_reset = phy->reset_gpio;
+ nop_pdata.type = USB_PHY_TYPE_USB2;
+
+ /* create a NOP PHY device */
+ memset(&pdevinfo, 0, sizeof(pdevinfo));
+ pdevinfo.name = nop_name;
+ pdevinfo.id = phy->port;
+ pdevinfo.data = &nop_pdata;
+ pdevinfo.size_data =
+ sizeof(struct usb_phy_generic_platform_data);
+ scnprintf(phy_id, MAX_STR, "usb_phy_generic.%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 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;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-05 02:42:21 +0000