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