// SPDX-License-Identifier: GPL-2.0+ /* * Central probing code for the FOTG210 dual role driver * We register one driver for the hardware and then we decide * whether to proceed with probing the host or the peripheral * driver. */ #include <linux/bitops.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/usb.h> #include <linux/usb/otg.h> #include "fotg210.h" /* Role Register 0x80 */ #define FOTG210_RR … #define FOTG210_RR_ID … #define FOTG210_RR_CROLE … /* * Gemini-specific initialization function, only executed on the * Gemini SoC using the global misc control register. * * The gemini USB blocks are connected to either Mini-A (host mode) or * Mini-B (peripheral mode) plugs. There is no role switch support on the * Gemini SoC, just either-or. */ #define GEMINI_GLOBAL_MISC_CTRL … #define GEMINI_MISC_USB0_WAKEUP … #define GEMINI_MISC_USB1_WAKEUP … #define GEMINI_MISC_USB0_VBUS_ON … #define GEMINI_MISC_USB1_VBUS_ON … #define GEMINI_MISC_USB0_MINI_B … #define GEMINI_MISC_USB1_MINI_B … static int fotg210_gemini_init(struct fotg210 *fotg, struct resource *res, enum usb_dr_mode mode) { … } /** * fotg210_vbus() - Called by gadget driver to enable/disable VBUS * @fotg: pointer to a private fotg210 object * @enable: true to enable VBUS, false to disable VBUS */ void fotg210_vbus(struct fotg210 *fotg, bool enable) { … } static int fotg210_probe(struct platform_device *pdev) { … } static void fotg210_remove(struct platform_device *pdev) { … } #ifdef CONFIG_OF static const struct of_device_id fotg210_of_match[] = …; MODULE_DEVICE_TABLE(of, fotg210_of_match); #endif static struct platform_driver fotg210_driver = …; static int __init fotg210_init(void) { … } module_init(…) …; static void __exit fotg210_cleanup(void) { … } module_exit(fotg210_cleanup); MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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