// SPDX-License-Identifier: GPL-2.0-only /* * omap-usb-tll.c - The USB TLL driver for OMAP EHCI & OHCI * * Copyright (C) 2012-2013 Texas Instruments Incorporated - https://www.ti.com * Author: Keshava Munegowda <[email protected]> * Author: Roger Quadros <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/io.h> #include <linux/err.h> #include <linux/pm_runtime.h> #include <linux/platform_data/usb-omap.h> #include <linux/of.h> #include "omap-usb.h" #define USBTLL_DRIVER_NAME … /* TLL Register Set */ #define OMAP_USBTLL_REVISION … #define OMAP_USBTLL_SYSCONFIG … #define OMAP_USBTLL_SYSCONFIG_CACTIVITY … #define OMAP_USBTLL_SYSCONFIG_SIDLEMODE … #define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP … #define OMAP_USBTLL_SYSCONFIG_SOFTRESET … #define OMAP_USBTLL_SYSCONFIG_AUTOIDLE … #define OMAP_USBTLL_SYSSTATUS … #define OMAP_USBTLL_SYSSTATUS_RESETDONE … #define OMAP_USBTLL_IRQSTATUS … #define OMAP_USBTLL_IRQENABLE … #define OMAP_TLL_SHARED_CONF … #define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN … #define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN … #define OMAP_TLL_SHARED_CONF_USB_DIVRATION … #define OMAP_TLL_SHARED_CONF_FCLK_REQ … #define OMAP_TLL_SHARED_CONF_FCLK_IS_ON … #define OMAP_TLL_CHANNEL_CONF(num) … #define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT … #define OMAP_TLL_CHANNEL_CONF_DRVVBUS … #define OMAP_TLL_CHANNEL_CONF_CHRGVBUS … #define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF … #define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE … #define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE … #define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE … #define OMAP_TLL_CHANNEL_CONF_MODE_TRANSPARENT_UTMI … #define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS … #define OMAP_TLL_CHANNEL_CONF_CHANEN … #define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 … #define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM … #define OMAP_TLL_FSLSMODE_3PIN_PHY … #define OMAP_TLL_FSLSMODE_4PIN_PHY … #define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 … #define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM … #define OMAP_TLL_FSLSMODE_3PIN_TLL … #define OMAP_TLL_FSLSMODE_4PIN_TLL … #define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 … #define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM … #define OMAP_TLL_ULPI_FUNCTION_CTRL(num) … #define OMAP_TLL_ULPI_INTERFACE_CTRL(num) … #define OMAP_TLL_ULPI_OTG_CTRL(num) … #define OMAP_TLL_ULPI_INT_EN_RISE(num) … #define OMAP_TLL_ULPI_INT_EN_FALL(num) … #define OMAP_TLL_ULPI_INT_STATUS(num) … #define OMAP_TLL_ULPI_INT_LATCH(num) … #define OMAP_TLL_ULPI_DEBUG(num) … #define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) … #define OMAP_REV2_TLL_CHANNEL_COUNT … #define OMAP_TLL_CHANNEL_COUNT … #define OMAP_TLL_CHANNEL_1_EN_MASK … #define OMAP_TLL_CHANNEL_2_EN_MASK … #define OMAP_TLL_CHANNEL_3_EN_MASK … /* Values of USBTLL_REVISION - Note: these are not given in the TRM */ #define OMAP_USBTLL_REV1 … #define OMAP_USBTLL_REV2 … #define OMAP_USBTLL_REV3 … #define OMAP_USBTLL_REV4 … #define is_ehci_tll_mode(x) … /* only PHY and UNUSED modes don't need TLL */ #define omap_usb_mode_needs_tll(x) … struct usbtll_omap { … }; /*-------------------------------------------------------------------------*/ static const char usbtll_driver_name[] = …; static struct device *tll_dev; static DEFINE_SPINLOCK(tll_lock); /* serialize access to tll_dev */ /*-------------------------------------------------------------------------*/ static inline void usbtll_write(void __iomem *base, u32 reg, u32 val) { … } static inline u32 usbtll_read(void __iomem *base, u32 reg) { … } static inline void usbtll_writeb(void __iomem *base, u32 reg, u8 val) { … } /*-------------------------------------------------------------------------*/ static bool is_ohci_port(enum usbhs_omap_port_mode pmode) { … } /* * convert the port-mode enum to a value we can use in the FSLSMODE * field of USBTLL_CHANNEL_CONF */ static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode) { … } /** * usbtll_omap_probe - initialize TI-based HCDs * * Allocates basic resources for this USB host controller. * * @pdev: Pointer to this device's platform device structure */ static int usbtll_omap_probe(struct platform_device *pdev) { … } /** * usbtll_omap_remove - shutdown processing for UHH & TLL HCDs * @pdev: USB Host Controller being removed * * Reverses the effect of usbtll_omap_probe(). */ static void usbtll_omap_remove(struct platform_device *pdev) { … } static const struct of_device_id usbtll_omap_dt_ids[] = …; MODULE_DEVICE_TABLE(of, usbtll_omap_dt_ids); static struct platform_driver usbtll_omap_driver = …; int omap_tll_init(struct usbhs_omap_platform_data *pdata) { … } EXPORT_SYMBOL_GPL(…); int omap_tll_enable(struct usbhs_omap_platform_data *pdata) { … } EXPORT_SYMBOL_GPL(…); int omap_tll_disable(struct usbhs_omap_platform_data *pdata) { … } EXPORT_SYMBOL_GPL(…); MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; static int __init omap_usbtll_drvinit(void) { … } /* * init before usbhs core driver; * The usbtll driver should be initialized before * the usbhs core driver probe function is called. */ fs_initcall(omap_usbtll_drvinit); static void __exit omap_usbtll_drvexit(void) { … } module_exit(omap_usbtll_drvexit);
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