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linux-headers-6.8.0-83
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renesas_usbhs.h
// SPDX-License-Identifier: GPL-1.0+ /* * Renesas USB * * Copyright (C) 2011 Renesas Solutions Corp. * Copyright (C) 2019 Renesas Electronics Corporation * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> */ #ifndef RENESAS_USB_H #define RENESAS_USB_H #include <linux/notifier.h> #include <linux/platform_device.h> #include <linux/usb/ch9.h> /* * module type * * it will be return value from get_id */ enum { USBHS_HOST = 0, USBHS_GADGET, USBHS_MAX, }; /* * callback functions for platform * * These functions are called from driver for platform */ struct renesas_usbhs_platform_callback { /* * option: * * Hardware init function for platform. * it is called when driver was probed. */ int (*hardware_init)(struct platform_device *pdev); /* * option: * * Hardware exit function for platform. * it is called when driver was removed */ int (*hardware_exit)(struct platform_device *pdev); /* * option: * * for board specific clock control */ int (*power_ctrl)(struct platform_device *pdev, void __iomem *base, int enable); /* * option: * * Phy reset for platform */ int (*phy_reset)(struct platform_device *pdev); /* * get USB ID function * - USBHS_HOST * - USBHS_GADGET */ int (*get_id)(struct platform_device *pdev); /* * get VBUS status function. */ int (*get_vbus)(struct platform_device *pdev); /* * option: * * VBUS control is needed for Host */ int (*set_vbus)(struct platform_device *pdev, int enable); /* * option: * extcon notifier to set host/peripheral mode. */ int (*notifier)(struct notifier_block *nb, unsigned long event, void *data); }; /* * parameters for renesas usbhs * * some register needs USB chip specific parameters. * This struct show it to driver */ struct renesas_usbhs_driver_pipe_config { u8 type; /* USB_ENDPOINT_XFER_xxx */ u16 bufsize; u8 bufnum; bool double_buf; }; #define RENESAS_USBHS_PIPE(_type, _size, _num, _double_buf) { \ .type = (_type), \ .bufsize = (_size), \ .bufnum = (_num), \ .double_buf = (_double_buf), \ } struct renesas_usbhs_driver_param { /* * pipe settings */ struct renesas_usbhs_driver_pipe_config *pipe_configs; int pipe_size; /* pipe_configs array size */ /* * option: * * for BUSWAIT :: BWAIT * see * renesas_usbhs/common.c :: usbhsc_set_buswait() * */ int buswait_bwait; /* * option: * * delay time from notify_hotplug callback */ int detection_delay; /* msec */ /* * option: * * dma id for dmaengine * The data transfer direction on D0FIFO/D1FIFO should be * fixed for keeping consistency. * So, the platform id settings will be.. * .d0_tx_id = xx_TX, * .d1_rx_id = xx_RX, * or * .d1_tx_id = xx_TX, * .d0_rx_id = xx_RX, */ int d0_tx_id; int d0_rx_id; int d1_tx_id; int d1_rx_id; int d2_tx_id; int d2_rx_id; int d3_tx_id; int d3_rx_id; /* * option: * * pio <--> dma border. */ int pio_dma_border; /* default is 64byte */ /* * option: */ u32 has_usb_dmac:1; /* for USB-DMAC */ u32 runtime_pwctrl:1; u32 has_cnen:1; u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */ #define USBHS_USB_DMAC_XFER_SIZE 32 /* hardcode the xfer size */ u32 multi_clks:1; u32 has_new_pipe_configs:1; }; /* * option: * * platform information for renesas_usbhs driver. */ struct renesas_usbhs_platform_info { /* * option: * * platform set these functions before * call platform_add_devices if needed */ struct renesas_usbhs_platform_callback platform_callback; /* * option: * * driver use these param for some register */ struct renesas_usbhs_driver_param driver_param; }; /* * macro for platform */ #define renesas_usbhs_get_info(pdev)\ ((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data) #endif /* RENESAS_USB_H */
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